src/drivers/driver_nl80211_capa.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211 - Capabilities
   3  * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright (c) 2009-2010, Atheros Communications
   6  *
   7  * This software may be distributed under the terms of the BSD license.
   8  * See README for more details.
   9  */
  10
  11 #include "includes.h"
  12 #include <netlink/genl/genl.h>
  13
  14 #include "utils/common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/ieee802_11_common.h"
  17 #include "common/qca-vendor.h"
  18 #include "common/qca-vendor-attr.h"
  19 #include "driver_nl80211.h"
  20
  21
  22 static int protocol_feature_handler(struct nl_msg *msg, void *arg)
  23 {
  24         u32 *feat = arg;
  25         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
  26         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
  27
  28         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
  29                   genlmsg_attrlen(gnlh, 0), NULL);
  30
  31         if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES])
  32                 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]);
  33
  34         return NL_SKIP;
  35 }
  36
  37
  38 static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv)
  39 {
  40         u32 feat = 0;
  41         struct nl_msg *msg;
  42
  43         msg = nlmsg_alloc();
  44         if (!msg)
  45                 return 0;
  46
  47         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES)) {
  48                 nlmsg_free(msg);
  49                 return 0;
  50         }
  51
  52         if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0)
  53                 return feat;
  54
  55         return 0;
  56 }
  57
  58
  59 struct wiphy_info_data {
  60         struct wpa_driver_nl80211_data *drv;
  61         struct wpa_driver_capa *capa;
  62
  63         unsigned int num_multichan_concurrent;
  64
  65         unsigned int error:1;
  66         unsigned int device_ap_sme:1;
  67         unsigned int poll_command_supported:1;
  68         unsigned int data_tx_status:1;
  69         unsigned int monitor_supported:1;
  70         unsigned int auth_supported:1;
  71         unsigned int connect_supported:1;
  72         unsigned int p2p_go_supported:1;
  73         unsigned int p2p_client_supported:1;
  74         unsigned int p2p_concurrent:1;
  75         unsigned int channel_switch_supported:1;
  76         unsigned int set_qos_map_supported:1;
  77         unsigned int have_low_prio_scan:1;
  78         unsigned int wmm_ac_supported:1;
  79         unsigned int mac_addr_rand_scan_supported:1;
  80         unsigned int mac_addr_rand_sched_scan_supported:1;
  81 };
  82
  83
  84 static unsigned int probe_resp_offload_support(int supp_protocols)
  85 {
  86         unsigned int prot = 0;
  87
  88         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
  89                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
  90         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
  91                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
  92         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
  93                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
  94         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
  95                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
  96
  97         return prot;
  98 }
  99
 100
 101 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
 102                                          struct nlattr *tb)
 103 {
 104         struct nlattr *nl_mode;
 105         int i;
 106
 107         if (tb == NULL)
 108                 return;
 109
 110         nla_for_each_nested(nl_mode, tb, i) {
 111                 switch (nla_type(nl_mode)) {
 112                 case NL80211_IFTYPE_AP:
 113                         info->capa->flags |= WPA_DRIVER_FLAGS_AP;
 114                         break;
 115                 case NL80211_IFTYPE_MESH_POINT:
 116                         info->capa->flags |= WPA_DRIVER_FLAGS_MESH;
 117                         break;
 118                 case NL80211_IFTYPE_ADHOC:
 119                         info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
 120                         break;
 121                 case NL80211_IFTYPE_P2P_DEVICE:
 122                         info->capa->flags |=
 123                                 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
 124                         break;
 125                 case NL80211_IFTYPE_P2P_GO:
 126                         info->p2p_go_supported = 1;
 127                         break;
 128                 case NL80211_IFTYPE_P2P_CLIENT:
 129                         info->p2p_client_supported = 1;
 130                         break;
 131                 case NL80211_IFTYPE_MONITOR:
 132                         info->monitor_supported = 1;
 133                         break;
 134                 }
 135         }
 136 }
 137
 138
 139 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
 140                                          struct nlattr *nl_combi)
 141 {
 142         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
 143         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
 144         struct nlattr *nl_limit, *nl_mode;
 145         int err, rem_limit, rem_mode;
 146         int combination_has_p2p = 0, combination_has_mgd = 0;
 147         static struct nla_policy
 148         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
 149                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
 150                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
 151                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
 152                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
 153                 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
 154         },
 155         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
 156                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
 157                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
 158         };
 159
 160         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
 161                                nl_combi, iface_combination_policy);
 162         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
 163             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
 164             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
 165                 return 0; /* broken combination */
 166
 167         if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
 168                 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
 169
 170         nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
 171                             rem_limit) {
 172                 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
 173                                        nl_limit, iface_limit_policy);
 174                 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
 175                         return 0; /* broken combination */
 176
 177                 nla_for_each_nested(nl_mode,
 178                                     tb_limit[NL80211_IFACE_LIMIT_TYPES],
 179                                     rem_mode) {
 180                         int ift = nla_type(nl_mode);
 181                         if (ift == NL80211_IFTYPE_P2P_GO ||
 182                             ift == NL80211_IFTYPE_P2P_CLIENT)
 183                                 combination_has_p2p = 1;
 184                         if (ift == NL80211_IFTYPE_STATION)
 185                                 combination_has_mgd = 1;
 186                 }
 187                 if (combination_has_p2p && combination_has_mgd)
 188                         break;
 189         }
 190
 191         if (combination_has_p2p && combination_has_mgd) {
 192                 unsigned int num_channels =
 193                         nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
 194
 195                 info->p2p_concurrent = 1;
 196                 if (info->num_multichan_concurrent < num_channels)
 197                         info->num_multichan_concurrent = num_channels;
 198         }
 199
 200         return 0;
 201 }
 202
 203
 204 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
 205                                   struct nlattr *tb)
 206 {
 207         struct nlattr *nl_combi;
 208         int rem_combi;
 209
 210         if (tb == NULL)
 211                 return;
 212
 213         nla_for_each_nested(nl_combi, tb, rem_combi) {
 214                 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
 215                         break;
 216         }
 217 }
 218
 219
 220 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
 221                                  struct nlattr *tb)
 222 {
 223         struct nlattr *nl_cmd;
 224         int i;
 225
 226         if (tb == NULL)
 227                 return;
 228
 229         nla_for_each_nested(nl_cmd, tb, i) {
 230                 switch (nla_get_u32(nl_cmd)) {
 231                 case NL80211_CMD_AUTHENTICATE:
 232                         info->auth_supported = 1;
 233                         break;
 234                 case NL80211_CMD_CONNECT:
 235                         info->connect_supported = 1;
 236                         break;
 237                 case NL80211_CMD_START_SCHED_SCAN:
 238                         info->capa->sched_scan_supported = 1;
 239                         break;
 240                 case NL80211_CMD_PROBE_CLIENT:
 241                         info->poll_command_supported = 1;
 242                         break;
 243                 case NL80211_CMD_CHANNEL_SWITCH:
 244                         info->channel_switch_supported = 1;
 245                         break;
 246                 case NL80211_CMD_SET_QOS_MAP:
 247                         info->set_qos_map_supported = 1;
 248                         break;
 249                 }
 250         }
 251 }
 252
 253
 254 static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
 255                                      struct nlattr *tb)
 256 {
 257         int i, num;
 258         u32 *ciphers;
 259
 260         if (tb == NULL)
 261                 return;
 262
 263         num = nla_len(tb) / sizeof(u32);
 264         ciphers = nla_data(tb);
 265         for (i = 0; i < num; i++) {
 266                 u32 c = ciphers[i];
 267
 268                 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
 269                            c >> 24, (c >> 16) & 0xff,
 270                            (c >> 8) & 0xff, c & 0xff);
 271                 switch (c) {
 272                 case WLAN_CIPHER_SUITE_CCMP_256:
 273                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
 274                         break;
 275                 case WLAN_CIPHER_SUITE_GCMP_256:
 276                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
 277                         break;
 278                 case WLAN_CIPHER_SUITE_CCMP:
 279                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
 280                         break;
 281                 case WLAN_CIPHER_SUITE_GCMP:
 282                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
 283                         break;
 284                 case WLAN_CIPHER_SUITE_TKIP:
 285                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
 286                         break;
 287                 case WLAN_CIPHER_SUITE_WEP104:
 288                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
 289                         break;
 290                 case WLAN_CIPHER_SUITE_WEP40:
 291                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
 292                         break;
 293                 case WLAN_CIPHER_SUITE_AES_CMAC:
 294                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
 295                         break;
 296                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 297                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
 298                         break;
 299                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 300                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
 301                         break;
 302                 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 303                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
 304                         break;
 305                 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR:
 306                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED;
 307                         break;
 308                 }
 309         }
 310 }
 311
 312
 313 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
 314                                struct nlattr *tb)
 315 {
 316         if (tb)
 317                 capa->max_remain_on_chan = nla_get_u32(tb);
 318 }
 319
 320
 321 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
 322                             struct nlattr *ext_setup)
 323 {
 324         if (tdls == NULL)
 325                 return;
 326
 327         wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
 328         capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
 329
 330         if (ext_setup) {
 331                 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
 332                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
 333         }
 334 }
 335
 336
 337 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
 338                                      struct nlattr *tb)
 339 {
 340         u32 flags;
 341         struct wpa_driver_capa *capa = info->capa;
 342
 343         if (tb == NULL)
 344                 return;
 345
 346         flags = nla_get_u32(tb);
 347
 348         if (flags & NL80211_FEATURE_SK_TX_STATUS)
 349                 info->data_tx_status = 1;
 350
 351         if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
 352                 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
 353
 354         if (flags & NL80211_FEATURE_SAE)
 355                 capa->flags |= WPA_DRIVER_FLAGS_SAE;
 356
 357         if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
 358                 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
 359
 360         if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
 361                 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX;
 362
 363         if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) {
 364                 wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch");
 365                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH;
 366         }
 367
 368         if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
 369                 info->have_low_prio_scan = 1;
 370
 371         if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)
 372                 info->mac_addr_rand_scan_supported = 1;
 373
 374         if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR)
 375                 info->mac_addr_rand_sched_scan_supported = 1;
 376
 377         if (flags & NL80211_FEATURE_STATIC_SMPS)
 378                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC;
 379
 380         if (flags & NL80211_FEATURE_DYNAMIC_SMPS)
 381                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC;
 382
 383         if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
 384                 info->wmm_ac_supported = 1;
 385
 386         if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
 387                 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES;
 388
 389         if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
 390                 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES;
 391
 392         if (flags & NL80211_FEATURE_QUIET)
 393                 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET;
 394
 395         if (flags & NL80211_FEATURE_TX_POWER_INSERTION)
 396                 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION;
 397 }
 398
 399
 400 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
 401                                           struct nlattr *tb)
 402 {
 403         u32 protocols;
 404
 405         if (tb == NULL)
 406                 return;
 407
 408         protocols = nla_get_u32(tb);
 409         wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
 410                    "mode");
 411         capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
 412         capa->probe_resp_offloads = probe_resp_offload_support(protocols);
 413 }
 414
 415
 416 static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa,
 417                                        struct nlattr *tb)
 418 {
 419         struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1];
 420
 421         if (tb == NULL)
 422                 return;
 423
 424         if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG,
 425                              tb, NULL))
 426                 return;
 427
 428         if (triggers[NL80211_WOWLAN_TRIG_ANY])
 429                 capa->wowlan_triggers.any = 1;
 430         if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT])
 431                 capa->wowlan_triggers.disconnect = 1;
 432         if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT])
 433                 capa->wowlan_triggers.magic_pkt = 1;
 434         if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
 435                 capa->wowlan_triggers.gtk_rekey_failure = 1;
 436         if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
 437                 capa->wowlan_triggers.eap_identity_req = 1;
 438         if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
 439                 capa->wowlan_triggers.four_way_handshake = 1;
 440         if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
 441                 capa->wowlan_triggers.rfkill_release = 1;
 442 }
 443
 444
 445 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
 446 {
 447         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 448         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 449         struct wiphy_info_data *info = arg;
 450         struct wpa_driver_capa *capa = info->capa;
 451         struct wpa_driver_nl80211_data *drv = info->drv;
 452
 453         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 454                   genlmsg_attrlen(gnlh, 0), NULL);
 455
 456         if (tb[NL80211_ATTR_WIPHY_NAME])
 457                 os_strlcpy(drv->phyname,
 458                            nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
 459                            sizeof(drv->phyname));
 460         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
 461                 capa->max_scan_ssids =
 462                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
 463
 464         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
 465                 capa->max_sched_scan_ssids =
 466                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
 467
 468         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
 469                 capa->max_match_sets =
 470                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
 471
 472         if (tb[NL80211_ATTR_MAC_ACL_MAX])
 473                 capa->max_acl_mac_addrs =
 474                         nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
 475
 476         wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
 477         wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
 478         wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
 479         wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
 480
 481         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
 482                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
 483                            "off-channel TX");
 484                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
 485         }
 486
 487         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
 488                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
 489                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
 490         }
 491
 492         wiphy_info_max_roc(capa,
 493                            tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
 494
 495         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
 496                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
 497
 498         wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
 499                         tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
 500
 501         if (tb[NL80211_ATTR_DEVICE_AP_SME])
 502                 info->device_ap_sme = 1;
 503
 504         wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
 505         wiphy_info_probe_resp_offload(capa,
 506                                       tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
 507
 508         if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
 509             drv->extended_capa == NULL) {
 510                 drv->extended_capa =
 511                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 512                 if (drv->extended_capa) {
 513                         os_memcpy(drv->extended_capa,
 514                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 515                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 516                         drv->extended_capa_len =
 517                                 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
 518                 }
 519                 drv->extended_capa_mask =
 520                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 521                 if (drv->extended_capa_mask) {
 522                         os_memcpy(drv->extended_capa_mask,
 523                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 524                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 525                 } else {
 526                         os_free(drv->extended_capa);
 527                         drv->extended_capa = NULL;
 528                         drv->extended_capa_len = 0;
 529                 }
 530         }
 531
 532         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 533                 struct nlattr *nl;
 534                 int rem;
 535
 536                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
 537                         struct nl80211_vendor_cmd_info *vinfo;
 538                         if (nla_len(nl) != sizeof(*vinfo)) {
 539                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 540                                 continue;
 541                         }
 542                         vinfo = nla_data(nl);
 543                         switch (vinfo->subcmd) {
 544                         case QCA_NL80211_VENDOR_SUBCMD_ROAMING:
 545                                 drv->roaming_vendor_cmd_avail = 1;
 546                                 break;
 547                         case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY:
 548                                 drv->dfs_vendor_cmd_avail = 1;
 549                                 break;
 550                         case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES:
 551                                 drv->get_features_vendor_cmd_avail = 1;
 552                                 break;
 553                         case QCA_NL80211_VENDOR_SUBCMD_DO_ACS:
 554                                 drv->capa.flags |= WPA_DRIVER_FLAGS_ACS_OFFLOAD;
 555                                 break;
 556                         }
 557
 558                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
 559                                    vinfo->vendor_id, vinfo->subcmd);
 560                 }
 561         }
 562
 563         if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
 564                 struct nlattr *nl;
 565                 int rem;
 566
 567                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
 568                         struct nl80211_vendor_cmd_info *vinfo;
 569                         if (nla_len(nl) != sizeof(*vinfo)) {
 570                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 571                                 continue;
 572                         }
 573                         vinfo = nla_data(nl);
 574                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
 575                                    vinfo->vendor_id, vinfo->subcmd);
 576                 }
 577         }
 578
 579         wiphy_info_wowlan_triggers(capa,
 580                                    tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
 581
 582         if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
 583                 capa->max_stations =
 584                         nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
 585
 586         return NL_SKIP;
 587 }
 588
 589
 590 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
 591                                        struct wiphy_info_data *info)
 592 {
 593         u32 feat;
 594         struct nl_msg *msg;
 595         int flags = 0;
 596
 597         os_memset(info, 0, sizeof(*info));
 598         info->capa = &drv->capa;
 599         info->drv = drv;
 600
 601         feat = get_nl80211_protocol_features(drv);
 602         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
 603                 flags = NLM_F_DUMP;
 604         msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY);
 605         if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
 606                 nlmsg_free(msg);
 607                 return -1;
 608         }
 609
 610         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
 611                 return -1;
 612
 613         if (info->auth_supported)
 614                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
 615         else if (!info->connect_supported) {
 616                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
 617                            "authentication/association or connect commands");
 618                 info->error = 1;
 619         }
 620
 621         if (info->p2p_go_supported && info->p2p_client_supported)
 622                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
 623         if (info->p2p_concurrent) {
 624                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
 625                            "interface (driver advertised support)");
 626                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
 627                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
 628         }
 629         if (info->num_multichan_concurrent > 1) {
 630                 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
 631                            "concurrent (driver advertised support)");
 632                 drv->capa.num_multichan_concurrent =
 633                         info->num_multichan_concurrent;
 634         }
 635         if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
 636                 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
 637
 638         /* default to 5000 since early versions of mac80211 don't set it */
 639         if (!drv->capa.max_remain_on_chan)
 640                 drv->capa.max_remain_on_chan = 5000;
 641
 642         if (info->channel_switch_supported)
 643                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
 644         drv->capa.wmm_ac_supported = info->wmm_ac_supported;
 645
 646         drv->capa.mac_addr_rand_sched_scan_supported =
 647                 info->mac_addr_rand_sched_scan_supported;
 648         drv->capa.mac_addr_rand_scan_supported =
 649                 info->mac_addr_rand_scan_supported;
 650
 651         return 0;
 652 }
 653
 654
 655 static int dfs_info_handler(struct nl_msg *msg, void *arg)
 656 {
 657         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 658         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 659         int *dfs_capability_ptr = arg;
 660
 661         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 662                   genlmsg_attrlen(gnlh, 0), NULL);
 663
 664         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 665                 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 666                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 667
 668                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 669                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 670
 671                 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
 672                         u32 val;
 673                         val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
 674                         wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
 675                                    val);
 676                         *dfs_capability_ptr = val;
 677                 }
 678         }
 679
 680         return NL_SKIP;
 681 }
 682
 683
 684 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
 685 {
 686         struct nl_msg *msg;
 687         int dfs_capability = 0;
 688         int ret;
 689
 690         if (!drv->dfs_vendor_cmd_avail)
 691                 return;
 692
 693         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
 694             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 695             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 696                         QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
 697                 nlmsg_free(msg);
 698                 return;
 699         }
 700
 701         ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
 702         if (!ret && dfs_capability)
 703                 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
 704 }
 705
 706
 707 struct features_info {
 708         u8 *flags;
 709         size_t flags_len;
 710 };
 711
 712
 713 static int features_info_handler(struct nl_msg *msg, void *arg)
 714 {
 715         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 716         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 717         struct features_info *info = arg;
 718         struct nlattr *nl_vend, *attr;
 719
 720         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 721                   genlmsg_attrlen(gnlh, 0), NULL);
 722
 723         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 724         if (nl_vend) {
 725                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 726
 727                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 728                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 729
 730                 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS];
 731                 if (attr) {
 732                         info->flags = nla_data(attr);
 733                         info->flags_len = nla_len(attr);
 734                 }
 735         }
 736
 737         return NL_SKIP;
 738 }
 739
 740
 741 static int check_feature(enum qca_wlan_vendor_features feature,
 742                          struct features_info *info)
 743 {
 744         size_t idx = feature / 8;
 745
 746         return (idx < info->flags_len) &&
 747                 (info->flags[idx] & BIT(feature % 8));
 748 }
 749
 750
 751 static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv)
 752 {
 753         struct nl_msg *msg;
 754         struct features_info info;
 755         int ret;
 756
 757         if (!drv->get_features_vendor_cmd_avail)
 758                 return;
 759
 760         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
 761             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 762             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 763                         QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) {
 764                 nlmsg_free(msg);
 765                 return;
 766         }
 767
 768         os_memset(&info, 0, sizeof(info));
 769         ret = send_and_recv_msgs(drv, msg, features_info_handler, &info);
 770         if (ret || !info.flags)
 771                 return;
 772
 773         if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info))
 774                 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD;
 775 }
 776
 777
 778 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 779 {
 780         struct wiphy_info_data info;
 781         if (wpa_driver_nl80211_get_info(drv, &info))
 782                 return -1;
 783
 784         if (info.error)
 785                 return -1;
 786
 787         drv->has_capability = 1;
 788         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
 789                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
 790                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
 791                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
 792         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
 793                 WPA_DRIVER_AUTH_SHARED |
 794                 WPA_DRIVER_AUTH_LEAP;
 795
 796         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
 797         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
 798         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 799
 800         /*
 801          * As all cfg80211 drivers must support cases where the AP interface is
 802          * removed without the knowledge of wpa_supplicant/hostapd, e.g., in
 803          * case that the user space daemon has crashed, they must be able to
 804          * cleanup all stations and key entries in the AP tear down flow. Thus,
 805          * this flag can/should always be set for cfg80211 drivers.
 806          */
 807         drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
 808
 809         if (!info.device_ap_sme) {
 810                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
 811
 812                 /*
 813                  * No AP SME is currently assumed to also indicate no AP MLME
 814                  * in the driver/firmware.
 815                  */
 816                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
 817         }
 818
 819         drv->device_ap_sme = info.device_ap_sme;
 820         drv->poll_command_supported = info.poll_command_supported;
 821         drv->data_tx_status = info.data_tx_status;
 822         if (info.set_qos_map_supported)
 823                 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
 824         drv->have_low_prio_scan = info.have_low_prio_scan;
 825
 826         /*
 827          * If poll command and tx status are supported, mac80211 is new enough
 828          * to have everything we need to not need monitor interfaces.
 829          */
 830         drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
 831
 832         if (drv->device_ap_sme && drv->use_monitor) {
 833                 /*
 834                  * Non-mac80211 drivers may not support monitor interface.
 835                  * Make sure we do not get stuck with incorrect capability here
 836                  * by explicitly testing this.
 837                  */
 838                 if (!info.monitor_supported) {
 839                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
 840                                    "with device_ap_sme since no monitor mode "
 841                                    "support detected");
 842                         drv->use_monitor = 0;
 843                 }
 844         }
 845
 846         /*
 847          * If we aren't going to use monitor interfaces, but the
 848          * driver doesn't support data TX status, we won't get TX
 849          * status for EAPOL frames.
 850          */
 851         if (!drv->use_monitor && !info.data_tx_status)
 852                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 853
 854         qca_nl80211_check_dfs_capa(drv);
 855         qca_nl80211_get_features(drv);
 856
 857         return 0;
 858 }
 859
 860
 861 struct phy_info_arg {
 862         u16 *num_modes;
 863         struct hostapd_hw_modes *modes;
 864         int last_mode, last_chan_idx;
 865 };
 866
 867 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
 868                              struct nlattr *ampdu_factor,
 869                              struct nlattr *ampdu_density,
 870                              struct nlattr *mcs_set)
 871 {
 872         if (capa)
 873                 mode->ht_capab = nla_get_u16(capa);
 874
 875         if (ampdu_factor)
 876                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
 877
 878         if (ampdu_density)
 879                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
 880
 881         if (mcs_set && nla_len(mcs_set) >= 16) {
 882                 u8 *mcs;
 883                 mcs = nla_data(mcs_set);
 884                 os_memcpy(mode->mcs_set, mcs, 16);
 885         }
 886 }
 887
 888
 889 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
 890                               struct nlattr *capa,
 891                               struct nlattr *mcs_set)
 892 {
 893         if (capa)
 894                 mode->vht_capab = nla_get_u32(capa);
 895
 896         if (mcs_set && nla_len(mcs_set) >= 8) {
 897                 u8 *mcs;
 898                 mcs = nla_data(mcs_set);
 899                 os_memcpy(mode->vht_mcs_set, mcs, 8);
 900         }
 901 }
 902
 903
 904 static void phy_info_freq(struct hostapd_hw_modes *mode,
 905                           struct hostapd_channel_data *chan,
 906                           struct nlattr *tb_freq[])
 907 {
 908         u8 channel;
 909         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
 910         chan->flag = 0;
 911         chan->dfs_cac_ms = 0;
 912         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
 913                 chan->chan = channel;
 914
 915         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
 916                 chan->flag |= HOSTAPD_CHAN_DISABLED;
 917         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
 918                 chan->flag |= HOSTAPD_CHAN_NO_IR;
 919         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
 920                 chan->flag |= HOSTAPD_CHAN_RADAR;
 921         if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
 922                 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
 923         if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
 924                 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
 925
 926         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
 927                 enum nl80211_dfs_state state =
 928                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
 929
 930                 switch (state) {
 931                 case NL80211_DFS_USABLE:
 932                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
 933                         break;
 934                 case NL80211_DFS_AVAILABLE:
 935                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
 936                         break;
 937                 case NL80211_DFS_UNAVAILABLE:
 938                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
 939                         break;
 940                 }
 941         }
 942
 943         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
 944                 chan->dfs_cac_ms = nla_get_u32(
 945                         tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
 946         }
 947 }
 948
 949
 950 static int phy_info_freqs(struct phy_info_arg *phy_info,
 951                           struct hostapd_hw_modes *mode, struct nlattr *tb)
 952 {
 953         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
 954                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
 955                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
 956                 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
 957                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
 958                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
 959                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
 960         };
 961         int new_channels = 0;
 962         struct hostapd_channel_data *channel;
 963         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
 964         struct nlattr *nl_freq;
 965         int rem_freq, idx;
 966
 967         if (tb == NULL)
 968                 return NL_OK;
 969
 970         nla_for_each_nested(nl_freq, tb, rem_freq) {
 971                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 972                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 973                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 974                         continue;
 975                 new_channels++;
 976         }
 977
 978         channel = os_realloc_array(mode->channels,
 979                                    mode->num_channels + new_channels,
 980                                    sizeof(struct hostapd_channel_data));
 981         if (!channel)
 982                 return NL_SKIP;
 983
 984         mode->channels = channel;
 985         mode->num_channels += new_channels;
 986
 987         idx = phy_info->last_chan_idx;
 988
 989         nla_for_each_nested(nl_freq, tb, rem_freq) {
 990                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 991                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 992                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 993                         continue;
 994                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
 995                 idx++;
 996         }
 997         phy_info->last_chan_idx = idx;
 998
 999         return NL_OK;
1000 }
1001
1002
1003 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
1004 {
1005         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1006                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1007                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
1008                 { .type = NLA_FLAG },
1009         };
1010         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1011         struct nlattr *nl_rate;
1012         int rem_rate, idx;
1013
1014         if (tb == NULL)
1015                 return NL_OK;
1016
1017         nla_for_each_nested(nl_rate, tb, rem_rate) {
1018                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1019                           nla_data(nl_rate), nla_len(nl_rate),
1020                           rate_policy);
1021                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1022                         continue;
1023                 mode->num_rates++;
1024         }
1025
1026         mode->rates = os_calloc(mode->num_rates, sizeof(int));
1027         if (!mode->rates)
1028                 return NL_SKIP;
1029
1030         idx = 0;
1031
1032         nla_for_each_nested(nl_rate, tb, rem_rate) {
1033                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1034                           nla_data(nl_rate), nla_len(nl_rate),
1035                           rate_policy);
1036                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1037                         continue;
1038                 mode->rates[idx] = nla_get_u32(
1039                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
1040                 idx++;
1041         }
1042
1043         return NL_OK;
1044 }
1045
1046
1047 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
1048 {
1049         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1050         struct hostapd_hw_modes *mode;
1051         int ret;
1052
1053         if (phy_info->last_mode != nl_band->nla_type) {
1054                 mode = os_realloc_array(phy_info->modes,
1055                                         *phy_info->num_modes + 1,
1056                                         sizeof(*mode));
1057                 if (!mode)
1058                         return NL_SKIP;
1059                 phy_info->modes = mode;
1060
1061                 mode = &phy_info->modes[*(phy_info->num_modes)];
1062                 os_memset(mode, 0, sizeof(*mode));
1063                 mode->mode = NUM_HOSTAPD_MODES;
1064                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
1065                         HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
1066
1067                 /*
1068                  * Unsupported VHT MCS stream is defined as value 3, so the VHT
1069                  * MCS RX/TX map must be initialized with 0xffff to mark all 8
1070                  * possible streams as unsupported. This will be overridden if
1071                  * driver advertises VHT support.
1072                  */
1073                 mode->vht_mcs_set[0] = 0xff;
1074                 mode->vht_mcs_set[1] = 0xff;
1075                 mode->vht_mcs_set[4] = 0xff;
1076                 mode->vht_mcs_set[5] = 0xff;
1077
1078                 *(phy_info->num_modes) += 1;
1079                 phy_info->last_mode = nl_band->nla_type;
1080                 phy_info->last_chan_idx = 0;
1081         } else
1082                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
1083
1084         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1085                   nla_len(nl_band), NULL);
1086
1087         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
1088                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
1089                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
1090                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
1091         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
1092                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
1093         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
1094         if (ret != NL_OK)
1095                 return ret;
1096         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
1097         if (ret != NL_OK)
1098                 return ret;
1099
1100         return NL_OK;
1101 }
1102
1103
1104 static int phy_info_handler(struct nl_msg *msg, void *arg)
1105 {
1106         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1107         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1108         struct phy_info_arg *phy_info = arg;
1109         struct nlattr *nl_band;
1110         int rem_band;
1111
1112         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1113                   genlmsg_attrlen(gnlh, 0), NULL);
1114
1115         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1116                 return NL_SKIP;
1117
1118         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
1119         {
1120                 int res = phy_info_band(phy_info, nl_band);
1121                 if (res != NL_OK)
1122                         return res;
1123         }
1124
1125         return NL_SKIP;
1126 }
1127
1128
1129 static struct hostapd_hw_modes *
1130 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
1131                                      u16 *num_modes)
1132 {
1133         u16 m;
1134         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1135         int i, mode11g_idx = -1;
1136
1137         /* heuristic to set up modes */
1138         for (m = 0; m < *num_modes; m++) {
1139                 if (!modes[m].num_channels)
1140                         continue;
1141                 if (modes[m].channels[0].freq < 4000) {
1142                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
1143                         for (i = 0; i < modes[m].num_rates; i++) {
1144                                 if (modes[m].rates[i] > 200) {
1145                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
1146                                         break;
1147                                 }
1148                         }
1149                 } else if (modes[m].channels[0].freq > 50000)
1150                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
1151                 else
1152                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
1153         }
1154
1155         /* If only 802.11g mode is included, use it to construct matching
1156          * 802.11b mode data. */
1157
1158         for (m = 0; m < *num_modes; m++) {
1159                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1160                         return modes; /* 802.11b already included */
1161                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1162                         mode11g_idx = m;
1163         }
1164
1165         if (mode11g_idx < 0)
1166                 return modes; /* 2.4 GHz band not supported at all */
1167
1168         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
1169         if (nmodes == NULL)
1170                 return modes; /* Could not add 802.11b mode */
1171
1172         mode = &nmodes[*num_modes];
1173         os_memset(mode, 0, sizeof(*mode));
1174         (*num_modes)++;
1175         modes = nmodes;
1176
1177         mode->mode = HOSTAPD_MODE_IEEE80211B;
1178
1179         mode11g = &modes[mode11g_idx];
1180         mode->num_channels = mode11g->num_channels;
1181         mode->channels = os_malloc(mode11g->num_channels *
1182                                    sizeof(struct hostapd_channel_data));
1183         if (mode->channels == NULL) {
1184                 (*num_modes)--;
1185                 return modes; /* Could not add 802.11b mode */
1186         }
1187         os_memcpy(mode->channels, mode11g->channels,
1188                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1189
1190         mode->num_rates = 0;
1191         mode->rates = os_malloc(4 * sizeof(int));
1192         if (mode->rates == NULL) {
1193                 os_free(mode->channels);
1194                 (*num_modes)--;
1195                 return modes; /* Could not add 802.11b mode */
1196         }
1197
1198         for (i = 0; i < mode11g->num_rates; i++) {
1199                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
1200                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
1201                         continue;
1202                 mode->rates[mode->num_rates] = mode11g->rates[i];
1203                 mode->num_rates++;
1204                 if (mode->num_rates == 4)
1205                         break;
1206         }
1207
1208         if (mode->num_rates == 0) {
1209                 os_free(mode->channels);
1210                 os_free(mode->rates);
1211                 (*num_modes)--;
1212                 return modes; /* No 802.11b rates */
1213         }
1214
1215         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1216                    "information");
1217
1218         return modes;
1219 }
1220
1221
1222 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
1223                                   int end)
1224 {
1225         int c;
1226
1227         for (c = 0; c < mode->num_channels; c++) {
1228                 struct hostapd_channel_data *chan = &mode->channels[c];
1229                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
1230                         chan->flag |= HOSTAPD_CHAN_HT40;
1231         }
1232 }
1233
1234
1235 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
1236                                       int end)
1237 {
1238         int c;
1239
1240         for (c = 0; c < mode->num_channels; c++) {
1241                 struct hostapd_channel_data *chan = &mode->channels[c];
1242                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
1243                         continue;
1244                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
1245                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
1246                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
1247                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
1248         }
1249 }
1250
1251
1252 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
1253                                       struct phy_info_arg *results)
1254 {
1255         u16 m;
1256
1257         for (m = 0; m < *results->num_modes; m++) {
1258                 int c;
1259                 struct hostapd_hw_modes *mode = &results->modes[m];
1260
1261                 for (c = 0; c < mode->num_channels; c++) {
1262                         struct hostapd_channel_data *chan = &mode->channels[c];
1263                         if ((u32) chan->freq - 10 >= start &&
1264                             (u32) chan->freq + 10 <= end)
1265                                 chan->max_tx_power = max_eirp;
1266                 }
1267         }
1268 }
1269
1270
1271 static void nl80211_reg_rule_ht40(u32 start, u32 end,
1272                                   struct phy_info_arg *results)
1273 {
1274         u16 m;
1275
1276         for (m = 0; m < *results->num_modes; m++) {
1277                 if (!(results->modes[m].ht_capab &
1278                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1279                         continue;
1280                 nl80211_set_ht40_mode(&results->modes[m], start, end);
1281         }
1282 }
1283
1284
1285 static void nl80211_reg_rule_sec(struct nlattr *tb[],
1286                                  struct phy_info_arg *results)
1287 {
1288         u32 start, end, max_bw;
1289         u16 m;
1290
1291         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1292             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1293             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1294                 return;
1295
1296         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1297         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1298         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1299
1300         if (max_bw < 20)
1301                 return;
1302
1303         for (m = 0; m < *results->num_modes; m++) {
1304                 if (!(results->modes[m].ht_capab &
1305                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1306                         continue;
1307                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
1308         }
1309 }
1310
1311
1312 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
1313                                  int end)
1314 {
1315         int c;
1316
1317         for (c = 0; c < mode->num_channels; c++) {
1318                 struct hostapd_channel_data *chan = &mode->channels[c];
1319                 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
1320                         chan->flag |= HOSTAPD_CHAN_VHT_10_70;
1321
1322                 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
1323                         chan->flag |= HOSTAPD_CHAN_VHT_30_50;
1324
1325                 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
1326                         chan->flag |= HOSTAPD_CHAN_VHT_50_30;
1327
1328                 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
1329                         chan->flag |= HOSTAPD_CHAN_VHT_70_10;
1330         }
1331 }
1332
1333
1334 static void nl80211_reg_rule_vht(struct nlattr *tb[],
1335                                  struct phy_info_arg *results)
1336 {
1337         u32 start, end, max_bw;
1338         u16 m;
1339
1340         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1341             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1342             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1343                 return;
1344
1345         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1346         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1347         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1348
1349         if (max_bw < 80)
1350                 return;
1351
1352         for (m = 0; m < *results->num_modes; m++) {
1353                 if (!(results->modes[m].ht_capab &
1354                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1355                         continue;
1356                 /* TODO: use a real VHT support indication */
1357                 if (!results->modes[m].vht_capab)
1358                         continue;
1359
1360                 nl80211_set_vht_mode(&results->modes[m], start, end);
1361         }
1362 }
1363
1364
1365 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
1366 {
1367         switch (region) {
1368         case NL80211_DFS_UNSET:
1369                 return "DFS-UNSET";
1370         case NL80211_DFS_FCC:
1371                 return "DFS-FCC";
1372         case NL80211_DFS_ETSI:
1373                 return "DFS-ETSI";
1374         case NL80211_DFS_JP:
1375                 return "DFS-JP";
1376         default:
1377                 return "DFS-invalid";
1378         }
1379 }
1380
1381
1382 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
1383 {
1384         struct phy_info_arg *results = arg;
1385         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1386         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1387         struct nlattr *nl_rule;
1388         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
1389         int rem_rule;
1390         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1391                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1392                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1393                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1394                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1395                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1396                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1397         };
1398
1399         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1400                   genlmsg_attrlen(gnlh, 0), NULL);
1401         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
1402             !tb_msg[NL80211_ATTR_REG_RULES]) {
1403                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
1404                            "available");
1405                 return NL_SKIP;
1406         }
1407
1408         if (tb_msg[NL80211_ATTR_DFS_REGION]) {
1409                 enum nl80211_dfs_regions dfs_domain;
1410                 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
1411                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
1412                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
1413                            dfs_domain_name(dfs_domain));
1414         } else {
1415                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
1416                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
1417         }
1418
1419         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1420         {
1421                 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
1422                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1423                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1424                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1425                     tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
1426                         continue;
1427                 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1428                 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1429                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1430                         max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
1431                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1432                         max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1433                 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
1434                         flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
1435
1436                 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
1437                            start, end, max_bw, max_eirp,
1438                            flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
1439                            flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
1440                            flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
1441                            flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
1442                            "",
1443                            flags & NL80211_RRF_DFS ? " (DFS)" : "",
1444                            flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
1445                            flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
1446                            flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
1447                 if (max_bw >= 40)
1448                         nl80211_reg_rule_ht40(start, end, results);
1449                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1450                         nl80211_reg_rule_max_eirp(start, end, max_eirp,
1451                                                   results);
1452         }
1453
1454         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1455         {
1456                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1457                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1458                 nl80211_reg_rule_sec(tb_rule, results);
1459         }
1460
1461         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1462         {
1463                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1464                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1465                 nl80211_reg_rule_vht(tb_rule, results);
1466         }
1467
1468         return NL_SKIP;
1469 }
1470
1471
1472 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
1473                                         struct phy_info_arg *results)
1474 {
1475         struct nl_msg *msg;
1476
1477         msg = nlmsg_alloc();
1478         if (!msg)
1479                 return -ENOMEM;
1480
1481         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1482         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
1483 }
1484
1485
1486 struct hostapd_hw_modes *
1487 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
1488 {
1489         u32 feat;
1490         struct i802_bss *bss = priv;
1491         struct wpa_driver_nl80211_data *drv = bss->drv;
1492         int nl_flags = 0;
1493         struct nl_msg *msg;
1494         struct phy_info_arg result = {
1495                 .num_modes = num_modes,
1496                 .modes = NULL,
1497                 .last_mode = -1,
1498         };
1499
1500         *num_modes = 0;
1501         *flags = 0;
1502
1503         feat = get_nl80211_protocol_features(drv);
1504         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
1505                 nl_flags = NLM_F_DUMP;
1506         if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) ||
1507             nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
1508                 nlmsg_free(msg);
1509                 return NULL;
1510         }
1511
1512         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
1513                 nl80211_set_regulatory_flags(drv, &result);
1514                 return wpa_driver_nl80211_postprocess_modes(result.modes,
1515                                                             num_modes);
1516         }
1517
1518         return NULL;
1519 }