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 };
  80
  81
  82 static unsigned int probe_resp_offload_support(int supp_protocols)
  83 {
  84         unsigned int prot = 0;
  85
  86         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
  87                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
  88         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
  89                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
  90         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
  91                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
  92         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
  93                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
  94
  95         return prot;
  96 }
  97
  98
  99 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
 100                                          struct nlattr *tb)
 101 {
 102         struct nlattr *nl_mode;
 103         int i;
 104
 105         if (tb == NULL)
 106                 return;
 107
 108         nla_for_each_nested(nl_mode, tb, i) {
 109                 switch (nla_type(nl_mode)) {
 110                 case NL80211_IFTYPE_AP:
 111                         info->capa->flags |= WPA_DRIVER_FLAGS_AP;
 112                         break;
 113                 case NL80211_IFTYPE_MESH_POINT:
 114                         info->capa->flags |= WPA_DRIVER_FLAGS_MESH;
 115                         break;
 116                 case NL80211_IFTYPE_ADHOC:
 117                         info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
 118                         break;
 119                 case NL80211_IFTYPE_P2P_DEVICE:
 120                         info->capa->flags |=
 121                                 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
 122                         break;
 123                 case NL80211_IFTYPE_P2P_GO:
 124                         info->p2p_go_supported = 1;
 125                         break;
 126                 case NL80211_IFTYPE_P2P_CLIENT:
 127                         info->p2p_client_supported = 1;
 128                         break;
 129                 case NL80211_IFTYPE_MONITOR:
 130                         info->monitor_supported = 1;
 131                         break;
 132                 }
 133         }
 134 }
 135
 136
 137 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
 138                                          struct nlattr *nl_combi)
 139 {
 140         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
 141         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
 142         struct nlattr *nl_limit, *nl_mode;
 143         int err, rem_limit, rem_mode;
 144         int combination_has_p2p = 0, combination_has_mgd = 0;
 145         static struct nla_policy
 146         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
 147                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
 148                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
 149                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
 150                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
 151                 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
 152         },
 153         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
 154                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
 155                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
 156         };
 157
 158         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
 159                                nl_combi, iface_combination_policy);
 160         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
 161             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
 162             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
 163                 return 0; /* broken combination */
 164
 165         if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
 166                 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
 167
 168         nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
 169                             rem_limit) {
 170                 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
 171                                        nl_limit, iface_limit_policy);
 172                 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
 173                         return 0; /* broken combination */
 174
 175                 nla_for_each_nested(nl_mode,
 176                                     tb_limit[NL80211_IFACE_LIMIT_TYPES],
 177                                     rem_mode) {
 178                         int ift = nla_type(nl_mode);
 179                         if (ift == NL80211_IFTYPE_P2P_GO ||
 180                             ift == NL80211_IFTYPE_P2P_CLIENT)
 181                                 combination_has_p2p = 1;
 182                         if (ift == NL80211_IFTYPE_STATION)
 183                                 combination_has_mgd = 1;
 184                 }
 185                 if (combination_has_p2p && combination_has_mgd)
 186                         break;
 187         }
 188
 189         if (combination_has_p2p && combination_has_mgd) {
 190                 unsigned int num_channels =
 191                         nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
 192
 193                 info->p2p_concurrent = 1;
 194                 if (info->num_multichan_concurrent < num_channels)
 195                         info->num_multichan_concurrent = num_channels;
 196         }
 197
 198         return 0;
 199 }
 200
 201
 202 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
 203                                   struct nlattr *tb)
 204 {
 205         struct nlattr *nl_combi;
 206         int rem_combi;
 207
 208         if (tb == NULL)
 209                 return;
 210
 211         nla_for_each_nested(nl_combi, tb, rem_combi) {
 212                 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
 213                         break;
 214         }
 215 }
 216
 217
 218 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
 219                                  struct nlattr *tb)
 220 {
 221         struct nlattr *nl_cmd;
 222         int i;
 223
 224         if (tb == NULL)
 225                 return;
 226
 227         nla_for_each_nested(nl_cmd, tb, i) {
 228                 switch (nla_get_u32(nl_cmd)) {
 229                 case NL80211_CMD_AUTHENTICATE:
 230                         info->auth_supported = 1;
 231                         break;
 232                 case NL80211_CMD_CONNECT:
 233                         info->connect_supported = 1;
 234                         break;
 235                 case NL80211_CMD_START_SCHED_SCAN:
 236                         info->capa->sched_scan_supported = 1;
 237                         break;
 238                 case NL80211_CMD_PROBE_CLIENT:
 239                         info->poll_command_supported = 1;
 240                         break;
 241                 case NL80211_CMD_CHANNEL_SWITCH:
 242                         info->channel_switch_supported = 1;
 243                         break;
 244                 case NL80211_CMD_SET_QOS_MAP:
 245                         info->set_qos_map_supported = 1;
 246                         break;
 247                 }
 248         }
 249 }
 250
 251
 252 static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
 253                                      struct nlattr *tb)
 254 {
 255         int i, num;
 256         u32 *ciphers;
 257
 258         if (tb == NULL)
 259                 return;
 260
 261         num = nla_len(tb) / sizeof(u32);
 262         ciphers = nla_data(tb);
 263         for (i = 0; i < num; i++) {
 264                 u32 c = ciphers[i];
 265
 266                 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
 267                            c >> 24, (c >> 16) & 0xff,
 268                            (c >> 8) & 0xff, c & 0xff);
 269                 switch (c) {
 270                 case WLAN_CIPHER_SUITE_CCMP_256:
 271                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
 272                         break;
 273                 case WLAN_CIPHER_SUITE_GCMP_256:
 274                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
 275                         break;
 276                 case WLAN_CIPHER_SUITE_CCMP:
 277                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
 278                         break;
 279                 case WLAN_CIPHER_SUITE_GCMP:
 280                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
 281                         break;
 282                 case WLAN_CIPHER_SUITE_TKIP:
 283                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
 284                         break;
 285                 case WLAN_CIPHER_SUITE_WEP104:
 286                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
 287                         break;
 288                 case WLAN_CIPHER_SUITE_WEP40:
 289                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
 290                         break;
 291                 case WLAN_CIPHER_SUITE_AES_CMAC:
 292                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
 293                         break;
 294                 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 295                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
 296                         break;
 297                 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 298                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
 299                         break;
 300                 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 301                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
 302                         break;
 303                 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR:
 304                         info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED;
 305                         break;
 306                 }
 307         }
 308 }
 309
 310
 311 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
 312                                struct nlattr *tb)
 313 {
 314         if (tb)
 315                 capa->max_remain_on_chan = nla_get_u32(tb);
 316 }
 317
 318
 319 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
 320                             struct nlattr *ext_setup)
 321 {
 322         if (tdls == NULL)
 323                 return;
 324
 325         wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
 326         capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
 327
 328         if (ext_setup) {
 329                 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
 330                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
 331         }
 332 }
 333
 334
 335 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
 336                                      struct nlattr *tb)
 337 {
 338         u32 flags;
 339         struct wpa_driver_capa *capa = info->capa;
 340
 341         if (tb == NULL)
 342                 return;
 343
 344         flags = nla_get_u32(tb);
 345
 346         if (flags & NL80211_FEATURE_SK_TX_STATUS)
 347                 info->data_tx_status = 1;
 348
 349         if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
 350                 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
 351
 352         if (flags & NL80211_FEATURE_SAE)
 353                 capa->flags |= WPA_DRIVER_FLAGS_SAE;
 354
 355         if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
 356                 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
 357
 358         if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
 359                 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX;
 360
 361         if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
 362                 info->have_low_prio_scan = 1;
 363
 364         if (flags & NL80211_FEATURE_STATIC_SMPS)
 365                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC;
 366
 367         if (flags & NL80211_FEATURE_DYNAMIC_SMPS)
 368                 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC;
 369
 370         if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
 371                 info->wmm_ac_supported = 1;
 372
 373         if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
 374                 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES;
 375
 376         if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
 377                 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES;
 378
 379         if (flags & NL80211_FEATURE_QUIET)
 380                 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET;
 381
 382         if (flags & NL80211_FEATURE_TX_POWER_INSERTION)
 383                 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION;
 384 }
 385
 386
 387 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
 388                                           struct nlattr *tb)
 389 {
 390         u32 protocols;
 391
 392         if (tb == NULL)
 393                 return;
 394
 395         protocols = nla_get_u32(tb);
 396         wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
 397                    "mode");
 398         capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
 399         capa->probe_resp_offloads = probe_resp_offload_support(protocols);
 400 }
 401
 402
 403 static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa,
 404                                        struct nlattr *tb)
 405 {
 406         struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1];
 407
 408         if (tb == NULL)
 409                 return;
 410
 411         if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG,
 412                              tb, NULL))
 413                 return;
 414
 415         if (triggers[NL80211_WOWLAN_TRIG_ANY])
 416                 capa->wowlan_triggers.any = 1;
 417         if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT])
 418                 capa->wowlan_triggers.disconnect = 1;
 419         if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT])
 420                 capa->wowlan_triggers.magic_pkt = 1;
 421         if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
 422                 capa->wowlan_triggers.gtk_rekey_failure = 1;
 423         if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
 424                 capa->wowlan_triggers.eap_identity_req = 1;
 425         if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
 426                 capa->wowlan_triggers.four_way_handshake = 1;
 427         if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
 428                 capa->wowlan_triggers.rfkill_release = 1;
 429 }
 430
 431
 432 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
 433 {
 434         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 435         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 436         struct wiphy_info_data *info = arg;
 437         struct wpa_driver_capa *capa = info->capa;
 438         struct wpa_driver_nl80211_data *drv = info->drv;
 439
 440         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 441                   genlmsg_attrlen(gnlh, 0), NULL);
 442
 443         if (tb[NL80211_ATTR_WIPHY_NAME])
 444                 os_strlcpy(drv->phyname,
 445                            nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
 446                            sizeof(drv->phyname));
 447         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
 448                 capa->max_scan_ssids =
 449                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
 450
 451         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
 452                 capa->max_sched_scan_ssids =
 453                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
 454
 455         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
 456                 capa->max_match_sets =
 457                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
 458
 459         if (tb[NL80211_ATTR_MAC_ACL_MAX])
 460                 capa->max_acl_mac_addrs =
 461                         nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
 462
 463         wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
 464         wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
 465         wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
 466         wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
 467
 468         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
 469                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
 470                            "off-channel TX");
 471                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
 472         }
 473
 474         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
 475                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
 476                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
 477         }
 478
 479         wiphy_info_max_roc(capa,
 480                            tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
 481
 482         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
 483                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
 484
 485         wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
 486                         tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
 487
 488         if (tb[NL80211_ATTR_DEVICE_AP_SME])
 489                 info->device_ap_sme = 1;
 490
 491         wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
 492         wiphy_info_probe_resp_offload(capa,
 493                                       tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
 494
 495         if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
 496             drv->extended_capa == NULL) {
 497                 drv->extended_capa =
 498                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 499                 if (drv->extended_capa) {
 500                         os_memcpy(drv->extended_capa,
 501                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 502                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 503                         drv->extended_capa_len =
 504                                 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
 505                 }
 506                 drv->extended_capa_mask =
 507                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 508                 if (drv->extended_capa_mask) {
 509                         os_memcpy(drv->extended_capa_mask,
 510                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
 511                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
 512                 } else {
 513                         os_free(drv->extended_capa);
 514                         drv->extended_capa = NULL;
 515                         drv->extended_capa_len = 0;
 516                 }
 517         }
 518
 519         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 520                 struct nlattr *nl;
 521                 int rem;
 522
 523                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
 524                         struct nl80211_vendor_cmd_info *vinfo;
 525                         if (nla_len(nl) != sizeof(*vinfo)) {
 526                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 527                                 continue;
 528                         }
 529                         vinfo = nla_data(nl);
 530                         switch (vinfo->subcmd) {
 531                         case QCA_NL80211_VENDOR_SUBCMD_ROAMING:
 532                                 drv->roaming_vendor_cmd_avail = 1;
 533                                 break;
 534                         case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY:
 535                                 drv->dfs_vendor_cmd_avail = 1;
 536                                 break;
 537                         case QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY:
 538                                 drv->key_mgmt_set_key_vendor_cmd_avail = 1;
 539                                 break;
 540                         case QCA_NL80211_VENDOR_SUBCMD_DO_ACS:
 541                                 drv->capa.flags |= WPA_DRIVER_FLAGS_ACS_OFFLOAD;
 542                                 break;
 543                         }
 544
 545                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
 546                                    vinfo->vendor_id, vinfo->subcmd);
 547                 }
 548         }
 549
 550         if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
 551                 struct nlattr *nl;
 552                 int rem;
 553
 554                 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
 555                         struct nl80211_vendor_cmd_info *vinfo;
 556                         if (nla_len(nl) != sizeof(*vinfo)) {
 557                                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
 558                                 continue;
 559                         }
 560                         vinfo = nla_data(nl);
 561                         if (vinfo->subcmd ==
 562                             QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_ROAM_AUTH)
 563                                 drv->roam_auth_vendor_event_avail = 1;
 564                         wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
 565                                    vinfo->vendor_id, vinfo->subcmd);
 566                 }
 567         }
 568
 569         wiphy_info_wowlan_triggers(capa,
 570                                    tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
 571
 572         if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
 573                 capa->max_stations =
 574                         nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
 575
 576         return NL_SKIP;
 577 }
 578
 579
 580 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
 581                                        struct wiphy_info_data *info)
 582 {
 583         u32 feat;
 584         struct nl_msg *msg;
 585         int flags = 0;
 586
 587         os_memset(info, 0, sizeof(*info));
 588         info->capa = &drv->capa;
 589         info->drv = drv;
 590
 591         feat = get_nl80211_protocol_features(drv);
 592         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
 593                 flags = NLM_F_DUMP;
 594         msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY);
 595         if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
 596                 nlmsg_free(msg);
 597                 return -1;
 598         }
 599
 600         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
 601                 return -1;
 602
 603         if (info->auth_supported)
 604                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
 605         else if (!info->connect_supported) {
 606                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
 607                            "authentication/association or connect commands");
 608                 info->error = 1;
 609         }
 610
 611         if (info->p2p_go_supported && info->p2p_client_supported)
 612                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
 613         if (info->p2p_concurrent) {
 614                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
 615                            "interface (driver advertised support)");
 616                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
 617                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
 618         }
 619         if (info->num_multichan_concurrent > 1) {
 620                 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
 621                            "concurrent (driver advertised support)");
 622                 drv->capa.num_multichan_concurrent =
 623                         info->num_multichan_concurrent;
 624         }
 625         if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
 626                 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
 627
 628         /* default to 5000 since early versions of mac80211 don't set it */
 629         if (!drv->capa.max_remain_on_chan)
 630                 drv->capa.max_remain_on_chan = 5000;
 631
 632         if (info->channel_switch_supported)
 633                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
 634         drv->capa.wmm_ac_supported = info->wmm_ac_supported;
 635
 636         return 0;
 637 }
 638
 639
 640 static int dfs_info_handler(struct nl_msg *msg, void *arg)
 641 {
 642         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 643         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 644         int *dfs_capability_ptr = arg;
 645
 646         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 647                   genlmsg_attrlen(gnlh, 0), NULL);
 648
 649         if (tb[NL80211_ATTR_VENDOR_DATA]) {
 650                 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
 651                 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 652
 653                 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
 654                           nla_data(nl_vend), nla_len(nl_vend), NULL);
 655
 656                 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
 657                         u32 val;
 658                         val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
 659                         wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
 660                                    val);
 661                         *dfs_capability_ptr = val;
 662                 }
 663         }
 664
 665         return NL_SKIP;
 666 }
 667
 668
 669 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
 670 {
 671         struct nl_msg *msg;
 672         int dfs_capability = 0;
 673         int ret;
 674
 675         if (!drv->dfs_vendor_cmd_avail)
 676                 return;
 677
 678         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
 679             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
 680             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
 681                         QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
 682                 nlmsg_free(msg);
 683                 return;
 684         }
 685
 686         ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
 687         if (!ret && dfs_capability)
 688                 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
 689 }
 690
 691
 692 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
 693 {
 694         struct wiphy_info_data info;
 695         if (wpa_driver_nl80211_get_info(drv, &info))
 696                 return -1;
 697
 698         if (info.error)
 699                 return -1;
 700
 701         drv->has_capability = 1;
 702         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
 703                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
 704                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
 705                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
 706         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
 707                 WPA_DRIVER_AUTH_SHARED |
 708                 WPA_DRIVER_AUTH_LEAP;
 709
 710         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
 711         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
 712         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 713
 714         /*
 715          * As all cfg80211 drivers must support cases where the AP interface is
 716          * removed without the knowledge of wpa_supplicant/hostapd, e.g., in
 717          * case that the user space daemon has crashed, they must be able to
 718          * cleanup all stations and key entries in the AP tear down flow. Thus,
 719          * this flag can/should always be set for cfg80211 drivers.
 720          */
 721         drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
 722
 723         if (!info.device_ap_sme) {
 724                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
 725
 726                 /*
 727                  * No AP SME is currently assumed to also indicate no AP MLME
 728                  * in the driver/firmware.
 729                  */
 730                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
 731         }
 732
 733         drv->device_ap_sme = info.device_ap_sme;
 734         drv->poll_command_supported = info.poll_command_supported;
 735         drv->data_tx_status = info.data_tx_status;
 736         if (info.set_qos_map_supported)
 737                 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
 738         drv->have_low_prio_scan = info.have_low_prio_scan;
 739
 740         /*
 741          * If poll command and tx status are supported, mac80211 is new enough
 742          * to have everything we need to not need monitor interfaces.
 743          */
 744         drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
 745
 746         if (drv->device_ap_sme && drv->use_monitor) {
 747                 /*
 748                  * Non-mac80211 drivers may not support monitor interface.
 749                  * Make sure we do not get stuck with incorrect capability here
 750                  * by explicitly testing this.
 751                  */
 752                 if (!info.monitor_supported) {
 753                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
 754                                    "with device_ap_sme since no monitor mode "
 755                                    "support detected");
 756                         drv->use_monitor = 0;
 757                 }
 758         }
 759
 760         /*
 761          * If we aren't going to use monitor interfaces, but the
 762          * driver doesn't support data TX status, we won't get TX
 763          * status for EAPOL frames.
 764          */
 765         if (!drv->use_monitor && !info.data_tx_status)
 766                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
 767
 768         qca_nl80211_check_dfs_capa(drv);
 769
 770         return 0;
 771 }
 772
 773
 774 struct phy_info_arg {
 775         u16 *num_modes;
 776         struct hostapd_hw_modes *modes;
 777         int last_mode, last_chan_idx;
 778 };
 779
 780 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
 781                              struct nlattr *ampdu_factor,
 782                              struct nlattr *ampdu_density,
 783                              struct nlattr *mcs_set)
 784 {
 785         if (capa)
 786                 mode->ht_capab = nla_get_u16(capa);
 787
 788         if (ampdu_factor)
 789                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
 790
 791         if (ampdu_density)
 792                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
 793
 794         if (mcs_set && nla_len(mcs_set) >= 16) {
 795                 u8 *mcs;
 796                 mcs = nla_data(mcs_set);
 797                 os_memcpy(mode->mcs_set, mcs, 16);
 798         }
 799 }
 800
 801
 802 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
 803                               struct nlattr *capa,
 804                               struct nlattr *mcs_set)
 805 {
 806         if (capa)
 807                 mode->vht_capab = nla_get_u32(capa);
 808
 809         if (mcs_set && nla_len(mcs_set) >= 8) {
 810                 u8 *mcs;
 811                 mcs = nla_data(mcs_set);
 812                 os_memcpy(mode->vht_mcs_set, mcs, 8);
 813         }
 814 }
 815
 816
 817 static void phy_info_freq(struct hostapd_hw_modes *mode,
 818                           struct hostapd_channel_data *chan,
 819                           struct nlattr *tb_freq[])
 820 {
 821         u8 channel;
 822         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
 823         chan->flag = 0;
 824         chan->dfs_cac_ms = 0;
 825         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
 826                 chan->chan = channel;
 827
 828         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
 829                 chan->flag |= HOSTAPD_CHAN_DISABLED;
 830         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
 831                 chan->flag |= HOSTAPD_CHAN_NO_IR;
 832         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
 833                 chan->flag |= HOSTAPD_CHAN_RADAR;
 834         if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
 835                 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
 836         if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
 837                 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
 838
 839         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
 840                 enum nl80211_dfs_state state =
 841                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
 842
 843                 switch (state) {
 844                 case NL80211_DFS_USABLE:
 845                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
 846                         break;
 847                 case NL80211_DFS_AVAILABLE:
 848                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
 849                         break;
 850                 case NL80211_DFS_UNAVAILABLE:
 851                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
 852                         break;
 853                 }
 854         }
 855
 856         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
 857                 chan->dfs_cac_ms = nla_get_u32(
 858                         tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
 859         }
 860 }
 861
 862
 863 static int phy_info_freqs(struct phy_info_arg *phy_info,
 864                           struct hostapd_hw_modes *mode, struct nlattr *tb)
 865 {
 866         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
 867                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
 868                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
 869                 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
 870                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
 871                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
 872                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
 873         };
 874         int new_channels = 0;
 875         struct hostapd_channel_data *channel;
 876         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
 877         struct nlattr *nl_freq;
 878         int rem_freq, idx;
 879
 880         if (tb == NULL)
 881                 return NL_OK;
 882
 883         nla_for_each_nested(nl_freq, tb, rem_freq) {
 884                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 885                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 886                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 887                         continue;
 888                 new_channels++;
 889         }
 890
 891         channel = os_realloc_array(mode->channels,
 892                                    mode->num_channels + new_channels,
 893                                    sizeof(struct hostapd_channel_data));
 894         if (!channel)
 895                 return NL_SKIP;
 896
 897         mode->channels = channel;
 898         mode->num_channels += new_channels;
 899
 900         idx = phy_info->last_chan_idx;
 901
 902         nla_for_each_nested(nl_freq, tb, rem_freq) {
 903                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
 904                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
 905                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
 906                         continue;
 907                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
 908                 idx++;
 909         }
 910         phy_info->last_chan_idx = idx;
 911
 912         return NL_OK;
 913 }
 914
 915
 916 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
 917 {
 918         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
 919                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
 920                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
 921                 { .type = NLA_FLAG },
 922         };
 923         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
 924         struct nlattr *nl_rate;
 925         int rem_rate, idx;
 926
 927         if (tb == NULL)
 928                 return NL_OK;
 929
 930         nla_for_each_nested(nl_rate, tb, rem_rate) {
 931                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
 932                           nla_data(nl_rate), nla_len(nl_rate),
 933                           rate_policy);
 934                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
 935                         continue;
 936                 mode->num_rates++;
 937         }
 938
 939         mode->rates = os_calloc(mode->num_rates, sizeof(int));
 940         if (!mode->rates)
 941                 return NL_SKIP;
 942
 943         idx = 0;
 944
 945         nla_for_each_nested(nl_rate, tb, rem_rate) {
 946                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
 947                           nla_data(nl_rate), nla_len(nl_rate),
 948                           rate_policy);
 949                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
 950                         continue;
 951                 mode->rates[idx] = nla_get_u32(
 952                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
 953                 idx++;
 954         }
 955
 956         return NL_OK;
 957 }
 958
 959
 960 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
 961 {
 962         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
 963         struct hostapd_hw_modes *mode;
 964         int ret;
 965
 966         if (phy_info->last_mode != nl_band->nla_type) {
 967                 mode = os_realloc_array(phy_info->modes,
 968                                         *phy_info->num_modes + 1,
 969                                         sizeof(*mode));
 970                 if (!mode)
 971                         return NL_SKIP;
 972                 phy_info->modes = mode;
 973
 974                 mode = &phy_info->modes[*(phy_info->num_modes)];
 975                 os_memset(mode, 0, sizeof(*mode));
 976                 mode->mode = NUM_HOSTAPD_MODES;
 977                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
 978                         HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
 979
 980                 /*
 981                  * Unsupported VHT MCS stream is defined as value 3, so the VHT
 982                  * MCS RX/TX map must be initialized with 0xffff to mark all 8
 983                  * possible streams as unsupported. This will be overridden if
 984                  * driver advertises VHT support.
 985                  */
 986                 mode->vht_mcs_set[0] = 0xff;
 987                 mode->vht_mcs_set[1] = 0xff;
 988                 mode->vht_mcs_set[4] = 0xff;
 989                 mode->vht_mcs_set[5] = 0xff;
 990
 991                 *(phy_info->num_modes) += 1;
 992                 phy_info->last_mode = nl_band->nla_type;
 993                 phy_info->last_chan_idx = 0;
 994         } else
 995                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
 996
 997         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
 998                   nla_len(nl_band), NULL);
 999
1000         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
1001                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
1002                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
1003                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
1004         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
1005                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
1006         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
1007         if (ret != NL_OK)
1008                 return ret;
1009         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
1010         if (ret != NL_OK)
1011                 return ret;
1012
1013         return NL_OK;
1014 }
1015
1016
1017 static int phy_info_handler(struct nl_msg *msg, void *arg)
1018 {
1019         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1020         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1021         struct phy_info_arg *phy_info = arg;
1022         struct nlattr *nl_band;
1023         int rem_band;
1024
1025         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1026                   genlmsg_attrlen(gnlh, 0), NULL);
1027
1028         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1029                 return NL_SKIP;
1030
1031         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
1032         {
1033                 int res = phy_info_band(phy_info, nl_band);
1034                 if (res != NL_OK)
1035                         return res;
1036         }
1037
1038         return NL_SKIP;
1039 }
1040
1041
1042 static struct hostapd_hw_modes *
1043 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
1044                                      u16 *num_modes)
1045 {
1046         u16 m;
1047         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1048         int i, mode11g_idx = -1;
1049
1050         /* heuristic to set up modes */
1051         for (m = 0; m < *num_modes; m++) {
1052                 if (!modes[m].num_channels)
1053                         continue;
1054                 if (modes[m].channels[0].freq < 4000) {
1055                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
1056                         for (i = 0; i < modes[m].num_rates; i++) {
1057                                 if (modes[m].rates[i] > 200) {
1058                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
1059                                         break;
1060                                 }
1061                         }
1062                 } else if (modes[m].channels[0].freq > 50000)
1063                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
1064                 else
1065                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
1066         }
1067
1068         /* If only 802.11g mode is included, use it to construct matching
1069          * 802.11b mode data. */
1070
1071         for (m = 0; m < *num_modes; m++) {
1072                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1073                         return modes; /* 802.11b already included */
1074                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1075                         mode11g_idx = m;
1076         }
1077
1078         if (mode11g_idx < 0)
1079                 return modes; /* 2.4 GHz band not supported at all */
1080
1081         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
1082         if (nmodes == NULL)
1083                 return modes; /* Could not add 802.11b mode */
1084
1085         mode = &nmodes[*num_modes];
1086         os_memset(mode, 0, sizeof(*mode));
1087         (*num_modes)++;
1088         modes = nmodes;
1089
1090         mode->mode = HOSTAPD_MODE_IEEE80211B;
1091
1092         mode11g = &modes[mode11g_idx];
1093         mode->num_channels = mode11g->num_channels;
1094         mode->channels = os_malloc(mode11g->num_channels *
1095                                    sizeof(struct hostapd_channel_data));
1096         if (mode->channels == NULL) {
1097                 (*num_modes)--;
1098                 return modes; /* Could not add 802.11b mode */
1099         }
1100         os_memcpy(mode->channels, mode11g->channels,
1101                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1102
1103         mode->num_rates = 0;
1104         mode->rates = os_malloc(4 * sizeof(int));
1105         if (mode->rates == NULL) {
1106                 os_free(mode->channels);
1107                 (*num_modes)--;
1108                 return modes; /* Could not add 802.11b mode */
1109         }
1110
1111         for (i = 0; i < mode11g->num_rates; i++) {
1112                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
1113                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
1114                         continue;
1115                 mode->rates[mode->num_rates] = mode11g->rates[i];
1116                 mode->num_rates++;
1117                 if (mode->num_rates == 4)
1118                         break;
1119         }
1120
1121         if (mode->num_rates == 0) {
1122                 os_free(mode->channels);
1123                 os_free(mode->rates);
1124                 (*num_modes)--;
1125                 return modes; /* No 802.11b rates */
1126         }
1127
1128         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1129                    "information");
1130
1131         return modes;
1132 }
1133
1134
1135 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
1136                                   int end)
1137 {
1138         int c;
1139
1140         for (c = 0; c < mode->num_channels; c++) {
1141                 struct hostapd_channel_data *chan = &mode->channels[c];
1142                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
1143                         chan->flag |= HOSTAPD_CHAN_HT40;
1144         }
1145 }
1146
1147
1148 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
1149                                       int end)
1150 {
1151         int c;
1152
1153         for (c = 0; c < mode->num_channels; c++) {
1154                 struct hostapd_channel_data *chan = &mode->channels[c];
1155                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
1156                         continue;
1157                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
1158                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
1159                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
1160                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
1161         }
1162 }
1163
1164
1165 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
1166                                       struct phy_info_arg *results)
1167 {
1168         u16 m;
1169
1170         for (m = 0; m < *results->num_modes; m++) {
1171                 int c;
1172                 struct hostapd_hw_modes *mode = &results->modes[m];
1173
1174                 for (c = 0; c < mode->num_channels; c++) {
1175                         struct hostapd_channel_data *chan = &mode->channels[c];
1176                         if ((u32) chan->freq - 10 >= start &&
1177                             (u32) chan->freq + 10 <= end)
1178                                 chan->max_tx_power = max_eirp;
1179                 }
1180         }
1181 }
1182
1183
1184 static void nl80211_reg_rule_ht40(u32 start, u32 end,
1185                                   struct phy_info_arg *results)
1186 {
1187         u16 m;
1188
1189         for (m = 0; m < *results->num_modes; m++) {
1190                 if (!(results->modes[m].ht_capab &
1191                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1192                         continue;
1193                 nl80211_set_ht40_mode(&results->modes[m], start, end);
1194         }
1195 }
1196
1197
1198 static void nl80211_reg_rule_sec(struct nlattr *tb[],
1199                                  struct phy_info_arg *results)
1200 {
1201         u32 start, end, max_bw;
1202         u16 m;
1203
1204         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1205             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1206             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1207                 return;
1208
1209         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1210         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1211         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1212
1213         if (max_bw < 20)
1214                 return;
1215
1216         for (m = 0; m < *results->num_modes; m++) {
1217                 if (!(results->modes[m].ht_capab &
1218                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1219                         continue;
1220                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
1221         }
1222 }
1223
1224
1225 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
1226                                  int end)
1227 {
1228         int c;
1229
1230         for (c = 0; c < mode->num_channels; c++) {
1231                 struct hostapd_channel_data *chan = &mode->channels[c];
1232                 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
1233                         chan->flag |= HOSTAPD_CHAN_VHT_10_70;
1234
1235                 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
1236                         chan->flag |= HOSTAPD_CHAN_VHT_30_50;
1237
1238                 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
1239                         chan->flag |= HOSTAPD_CHAN_VHT_50_30;
1240
1241                 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
1242                         chan->flag |= HOSTAPD_CHAN_VHT_70_10;
1243         }
1244 }
1245
1246
1247 static void nl80211_reg_rule_vht(struct nlattr *tb[],
1248                                  struct phy_info_arg *results)
1249 {
1250         u32 start, end, max_bw;
1251         u16 m;
1252
1253         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1254             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1255             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1256                 return;
1257
1258         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1259         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1260         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1261
1262         if (max_bw < 80)
1263                 return;
1264
1265         for (m = 0; m < *results->num_modes; m++) {
1266                 if (!(results->modes[m].ht_capab &
1267                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1268                         continue;
1269                 /* TODO: use a real VHT support indication */
1270                 if (!results->modes[m].vht_capab)
1271                         continue;
1272
1273                 nl80211_set_vht_mode(&results->modes[m], start, end);
1274         }
1275 }
1276
1277
1278 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
1279 {
1280         switch (region) {
1281         case NL80211_DFS_UNSET:
1282                 return "DFS-UNSET";
1283         case NL80211_DFS_FCC:
1284                 return "DFS-FCC";
1285         case NL80211_DFS_ETSI:
1286                 return "DFS-ETSI";
1287         case NL80211_DFS_JP:
1288                 return "DFS-JP";
1289         default:
1290                 return "DFS-invalid";
1291         }
1292 }
1293
1294
1295 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
1296 {
1297         struct phy_info_arg *results = arg;
1298         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1299         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1300         struct nlattr *nl_rule;
1301         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
1302         int rem_rule;
1303         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1304                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1305                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1306                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1307                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1308                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1309                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1310         };
1311
1312         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1313                   genlmsg_attrlen(gnlh, 0), NULL);
1314         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
1315             !tb_msg[NL80211_ATTR_REG_RULES]) {
1316                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
1317                            "available");
1318                 return NL_SKIP;
1319         }
1320
1321         if (tb_msg[NL80211_ATTR_DFS_REGION]) {
1322                 enum nl80211_dfs_regions dfs_domain;
1323                 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
1324                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
1325                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
1326                            dfs_domain_name(dfs_domain));
1327         } else {
1328                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
1329                            (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
1330         }
1331
1332         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1333         {
1334                 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
1335                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1336                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1337                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1338                     tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
1339                         continue;
1340                 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1341                 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1342                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1343                         max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
1344                 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1345                         max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1346                 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
1347                         flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
1348
1349                 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
1350                            start, end, max_bw, max_eirp,
1351                            flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
1352                            flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
1353                            flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
1354                            flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
1355                            "",
1356                            flags & NL80211_RRF_DFS ? " (DFS)" : "",
1357                            flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
1358                            flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
1359                            flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
1360                 if (max_bw >= 40)
1361                         nl80211_reg_rule_ht40(start, end, results);
1362                 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1363                         nl80211_reg_rule_max_eirp(start, end, max_eirp,
1364                                                   results);
1365         }
1366
1367         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1368         {
1369                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1370                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1371                 nl80211_reg_rule_sec(tb_rule, results);
1372         }
1373
1374         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1375         {
1376                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1377                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1378                 nl80211_reg_rule_vht(tb_rule, results);
1379         }
1380
1381         return NL_SKIP;
1382 }
1383
1384
1385 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
1386                                         struct phy_info_arg *results)
1387 {
1388         struct nl_msg *msg;
1389
1390         msg = nlmsg_alloc();
1391         if (!msg)
1392                 return -ENOMEM;
1393
1394         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1395         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
1396 }
1397
1398
1399 struct hostapd_hw_modes *
1400 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
1401 {
1402         u32 feat;
1403         struct i802_bss *bss = priv;
1404         struct wpa_driver_nl80211_data *drv = bss->drv;
1405         int nl_flags = 0;
1406         struct nl_msg *msg;
1407         struct phy_info_arg result = {
1408                 .num_modes = num_modes,
1409                 .modes = NULL,
1410                 .last_mode = -1,
1411         };
1412
1413         *num_modes = 0;
1414         *flags = 0;
1415
1416         feat = get_nl80211_protocol_features(drv);
1417         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
1418                 nl_flags = NLM_F_DUMP;
1419         if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) ||
1420             nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
1421                 nlmsg_free(msg);
1422                 return NULL;
1423         }
1424
1425         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
1426                 nl80211_set_regulatory_flags(drv, &result);
1427                 return wpa_driver_nl80211_postprocess_modes(result.modes,
1428                                                             num_modes);
1429         }
1430
1431         return NULL;
1432 }