1/* 2 * Driver interaction with Linux nl80211/cfg80211 - Capabilities 3 * Copyright (c) 2002-2015, 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 22static 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 38static 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 59struct 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_go_ctwindow_supported:1; 75 unsigned int p2p_concurrent:1; 76 unsigned int channel_switch_supported:1; 77 unsigned int set_qos_map_supported:1; 78 unsigned int have_low_prio_scan:1; 79 unsigned int wmm_ac_supported:1; 80 unsigned int mac_addr_rand_scan_supported:1; 81 unsigned int mac_addr_rand_sched_scan_supported:1; 82}; 83 84 85static unsigned int probe_resp_offload_support(int supp_protocols) 86{ 87 unsigned int prot = 0; 88 89 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 90 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 91 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 92 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 93 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 94 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 95 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 96 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 97 98 return prot; 99} 100 101 102static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 103 struct nlattr *tb) 104{ 105 struct nlattr *nl_mode; 106 int i; 107 108 if (tb == NULL) 109 return; 110 111 nla_for_each_nested(nl_mode, tb, i) { 112 switch (nla_type(nl_mode)) { 113 case NL80211_IFTYPE_AP: 114 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 115 break; 116 case NL80211_IFTYPE_MESH_POINT: 117 info->capa->flags |= WPA_DRIVER_FLAGS_MESH; 118 break; 119 case NL80211_IFTYPE_ADHOC: 120 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 121 break; 122 case NL80211_IFTYPE_P2P_DEVICE: 123 info->capa->flags |= 124 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE; 125 break; 126 case NL80211_IFTYPE_P2P_GO: 127 info->p2p_go_supported = 1; 128 break; 129 case NL80211_IFTYPE_P2P_CLIENT: 130 info->p2p_client_supported = 1; 131 break; 132 case NL80211_IFTYPE_MONITOR: 133 info->monitor_supported = 1; 134 break; 135 } 136 } 137} 138 139 140static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 141 struct nlattr *nl_combi) 142{ 143 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 144 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 145 struct nlattr *nl_limit, *nl_mode; 146 int err, rem_limit, rem_mode; 147 int combination_has_p2p = 0, combination_has_mgd = 0; 148 static struct nla_policy 149 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 150 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 151 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 152 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 153 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 154 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 }, 155 }, 156 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 157 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 158 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 159 }; 160 161 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 162 nl_combi, iface_combination_policy); 163 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 164 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 165 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 166 return 0; /* broken combination */ 167 168 if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS]) 169 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR; 170 171 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 172 rem_limit) { 173 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 174 nl_limit, iface_limit_policy); 175 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 176 return 0; /* broken combination */ 177 178 nla_for_each_nested(nl_mode, 179 tb_limit[NL80211_IFACE_LIMIT_TYPES], 180 rem_mode) { 181 int ift = nla_type(nl_mode); 182 if (ift == NL80211_IFTYPE_P2P_GO || 183 ift == NL80211_IFTYPE_P2P_CLIENT) 184 combination_has_p2p = 1; 185 if (ift == NL80211_IFTYPE_STATION) 186 combination_has_mgd = 1; 187 } 188 if (combination_has_p2p && combination_has_mgd) 189 break; 190 } 191 192 if (combination_has_p2p && combination_has_mgd) { 193 unsigned int num_channels = 194 nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]); 195 196 info->p2p_concurrent = 1; 197 if (info->num_multichan_concurrent < num_channels) 198 info->num_multichan_concurrent = num_channels; 199 } 200 201 return 0; 202} 203 204 205static void wiphy_info_iface_comb(struct wiphy_info_data *info, 206 struct nlattr *tb) 207{ 208 struct nlattr *nl_combi; 209 int rem_combi; 210 211 if (tb == NULL) 212 return; 213 214 nla_for_each_nested(nl_combi, tb, rem_combi) { 215 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 216 break; 217 } 218} 219 220 221static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 222 struct nlattr *tb) 223{ 224 struct nlattr *nl_cmd; 225 int i; 226 227 if (tb == NULL) 228 return; 229 230 nla_for_each_nested(nl_cmd, tb, i) { 231 switch (nla_get_u32(nl_cmd)) { 232 case NL80211_CMD_AUTHENTICATE: 233 info->auth_supported = 1; 234 break; 235 case NL80211_CMD_CONNECT: 236 info->connect_supported = 1; 237 break; 238 case NL80211_CMD_START_SCHED_SCAN: 239 info->capa->sched_scan_supported = 1; 240 break; 241 case NL80211_CMD_PROBE_CLIENT: 242 info->poll_command_supported = 1; 243 break; 244 case NL80211_CMD_CHANNEL_SWITCH: 245 info->channel_switch_supported = 1; 246 break; 247 case NL80211_CMD_SET_QOS_MAP: 248 info->set_qos_map_supported = 1; 249 break; 250 } 251 } 252} 253 254 255static void wiphy_info_cipher_suites(struct wiphy_info_data *info, 256 struct nlattr *tb) 257{ 258 int i, num; 259 u32 *ciphers; 260 261 if (tb == NULL) 262 return; 263 264 num = nla_len(tb) / sizeof(u32); 265 ciphers = nla_data(tb); 266 for (i = 0; i < num; i++) { 267 u32 c = ciphers[i]; 268 269 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d", 270 c >> 24, (c >> 16) & 0xff, 271 (c >> 8) & 0xff, c & 0xff); 272 switch (c) { 273 case WLAN_CIPHER_SUITE_CCMP_256: 274 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256; 275 break; 276 case WLAN_CIPHER_SUITE_GCMP_256: 277 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256; 278 break; 279 case WLAN_CIPHER_SUITE_CCMP: 280 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP; 281 break; 282 case WLAN_CIPHER_SUITE_GCMP: 283 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP; 284 break; 285 case WLAN_CIPHER_SUITE_TKIP: 286 info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP; 287 break; 288 case WLAN_CIPHER_SUITE_WEP104: 289 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104; 290 break; 291 case WLAN_CIPHER_SUITE_WEP40: 292 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40; 293 break; 294 case WLAN_CIPHER_SUITE_AES_CMAC: 295 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP; 296 break; 297 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 298 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128; 299 break; 300 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 301 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256; 302 break; 303 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 304 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256; 305 break; 306 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR: 307 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED; 308 break; 309 } 310 } 311} 312 313 314static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 315 struct nlattr *tb) 316{ 317 if (tb) 318 capa->max_remain_on_chan = nla_get_u32(tb); 319} 320 321 322static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 323 struct nlattr *ext_setup) 324{ 325 if (tdls == NULL) 326 return; 327 328 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 329 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 330 331 if (ext_setup) { 332 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 333 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 334 } 335} 336 337 338static int ext_feature_isset(const u8 *ext_features, int ext_features_len, 339 enum nl80211_ext_feature_index ftidx) 340{ 341 u8 ft_byte; 342 343 if ((int) ftidx / 8 >= ext_features_len) 344 return 0; 345 346 ft_byte = ext_features[ftidx / 8]; 347 return (ft_byte & BIT(ftidx % 8)) != 0; 348} 349 350 351static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info, 352 struct nlattr *tb) 353{ 354 struct wpa_driver_capa *capa = info->capa; 355 356 if (tb == NULL) 357 return; 358 359 if (ext_feature_isset(nla_data(tb), nla_len(tb), 360 NL80211_EXT_FEATURE_VHT_IBSS)) 361 capa->flags |= WPA_DRIVER_FLAGS_VHT_IBSS; 362} 363 364 365static void wiphy_info_feature_flags(struct wiphy_info_data *info, 366 struct nlattr *tb) 367{ 368 u32 flags; 369 struct wpa_driver_capa *capa = info->capa; 370 371 if (tb == NULL) 372 return; 373 374 flags = nla_get_u32(tb); 375 376 if (flags & NL80211_FEATURE_SK_TX_STATUS) 377 info->data_tx_status = 1; 378 379 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 380 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 381 382 if (flags & NL80211_FEATURE_SAE) 383 capa->flags |= WPA_DRIVER_FLAGS_SAE; 384 385 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 386 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 387 388 if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE) 389 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX; 390 391 if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) { 392 wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch"); 393 capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH; 394 } 395 396 if (flags & NL80211_FEATURE_P2P_GO_CTWIN) 397 info->p2p_go_ctwindow_supported = 1; 398 399 if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN) 400 info->have_low_prio_scan = 1; 401 402 if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR) 403 info->mac_addr_rand_scan_supported = 1; 404 405 if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR) 406 info->mac_addr_rand_sched_scan_supported = 1; 407 408 if (flags & NL80211_FEATURE_STATIC_SMPS) 409 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC; 410 411 if (flags & NL80211_FEATURE_DYNAMIC_SMPS) 412 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC; 413 414 if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 415 info->wmm_ac_supported = 1; 416 417 if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) 418 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES; 419 420 if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES) 421 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES; 422 423 if (flags & NL80211_FEATURE_QUIET) 424 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET; 425 426 if (flags & NL80211_FEATURE_TX_POWER_INSERTION) 427 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION; 428 429 if (flags & NL80211_FEATURE_HT_IBSS) 430 capa->flags |= WPA_DRIVER_FLAGS_HT_IBSS; 431 432 if (flags & NL80211_FEATURE_FULL_AP_CLIENT_STATE) 433 capa->flags |= WPA_DRIVER_FLAGS_FULL_AP_CLIENT_STATE; 434} 435 436 437static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 438 struct nlattr *tb) 439{ 440 u32 protocols; 441 442 if (tb == NULL) 443 return; 444 445 protocols = nla_get_u32(tb); 446 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 447 "mode"); 448 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 449 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 450} 451 452 453static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa, 454 struct nlattr *tb) 455{ 456 struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1]; 457 458 if (tb == NULL) 459 return; 460 461 if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG, 462 tb, NULL)) 463 return; 464 465 if (triggers[NL80211_WOWLAN_TRIG_ANY]) 466 capa->wowlan_triggers.any = 1; 467 if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT]) 468 capa->wowlan_triggers.disconnect = 1; 469 if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT]) 470 capa->wowlan_triggers.magic_pkt = 1; 471 if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) 472 capa->wowlan_triggers.gtk_rekey_failure = 1; 473 if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) 474 capa->wowlan_triggers.eap_identity_req = 1; 475 if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) 476 capa->wowlan_triggers.four_way_handshake = 1; 477 if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) 478 capa->wowlan_triggers.rfkill_release = 1; 479} 480 481 482static int wiphy_info_handler(struct nl_msg *msg, void *arg) 483{ 484 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 485 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 486 struct wiphy_info_data *info = arg; 487 struct wpa_driver_capa *capa = info->capa; 488 struct wpa_driver_nl80211_data *drv = info->drv; 489 490 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 491 genlmsg_attrlen(gnlh, 0), NULL); 492 493 if (tb[NL80211_ATTR_WIPHY]) 494 drv->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 495 496 if (tb[NL80211_ATTR_WIPHY_NAME]) 497 os_strlcpy(drv->phyname, 498 nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]), 499 sizeof(drv->phyname)); 500 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 501 capa->max_scan_ssids = 502 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 503 504 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 505 capa->max_sched_scan_ssids = 506 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 507 508 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS] && 509 tb[NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL] && 510 tb[NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS]) { 511 capa->max_sched_scan_plans = 512 nla_get_u32(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS]); 513 514 capa->max_sched_scan_plan_interval = 515 nla_get_u32(tb[NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL]); 516 517 capa->max_sched_scan_plan_iterations = 518 nla_get_u32(tb[NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS]); 519 } 520 521 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 522 capa->max_match_sets = 523 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 524 525 if (tb[NL80211_ATTR_MAC_ACL_MAX]) 526 capa->max_acl_mac_addrs = 527 nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]); 528 529 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 530 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 531 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 532 wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]); 533 534 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 535 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 536 "off-channel TX"); 537 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 538 } 539 540 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 541 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 542 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 543 } 544 545 wiphy_info_max_roc(capa, 546 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 547 548 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 549 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 550 551 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 552 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 553 554 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 555 info->device_ap_sme = 1; 556 557 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 558 wiphy_info_ext_feature_flags(info, tb[NL80211_ATTR_EXT_FEATURES]); 559 wiphy_info_probe_resp_offload(capa, 560 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 561 562 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && 563 drv->extended_capa == NULL) { 564 drv->extended_capa = 565 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 566 if (drv->extended_capa) { 567 os_memcpy(drv->extended_capa, 568 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 569 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 570 drv->extended_capa_len = 571 nla_len(tb[NL80211_ATTR_EXT_CAPA]); 572 } 573 drv->extended_capa_mask = 574 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK])); 575 if (drv->extended_capa_mask) { 576 os_memcpy(drv->extended_capa_mask, 577 nla_data(tb[NL80211_ATTR_EXT_CAPA_MASK]), 578 nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK])); 579 } else { 580 os_free(drv->extended_capa); 581 drv->extended_capa = NULL; 582 drv->extended_capa_len = 0; 583 } 584 } 585 586 if (tb[NL80211_ATTR_VENDOR_DATA]) { 587 struct nlattr *nl; 588 int rem; 589 590 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) { 591 struct nl80211_vendor_cmd_info *vinfo; 592 if (nla_len(nl) != sizeof(*vinfo)) { 593 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); 594 continue; 595 } 596 vinfo = nla_data(nl); 597 if (vinfo->vendor_id == OUI_QCA) { 598 switch (vinfo->subcmd) { 599 case QCA_NL80211_VENDOR_SUBCMD_TEST: 600 drv->vendor_cmd_test_avail = 1; 601 break; 602#ifdef CONFIG_DRIVER_NL80211_QCA 603 case QCA_NL80211_VENDOR_SUBCMD_ROAMING: 604 drv->roaming_vendor_cmd_avail = 1; 605 break; 606 case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY: 607 drv->dfs_vendor_cmd_avail = 1; 608 break; 609 case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES: 610 drv->get_features_vendor_cmd_avail = 1; 611 break; 612 case QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST: 613 drv->get_pref_freq_list = 1; 614 break; 615 case QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL: 616 drv->set_prob_oper_freq = 1; 617 break; 618 case QCA_NL80211_VENDOR_SUBCMD_DO_ACS: 619 drv->capa.flags |= 620 WPA_DRIVER_FLAGS_ACS_OFFLOAD; 621 break; 622 case QCA_NL80211_VENDOR_SUBCMD_SETBAND: 623 drv->setband_vendor_cmd_avail = 1; 624 break; 625 case QCA_NL80211_VENDOR_SUBCMD_TRIGGER_SCAN: 626 drv->scan_vendor_cmd_avail = 1; 627 break; 628#endif /* CONFIG_DRIVER_NL80211_QCA */ 629 } 630 } 631 632 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u", 633 vinfo->vendor_id, vinfo->subcmd); 634 } 635 } 636 637 if (tb[NL80211_ATTR_VENDOR_EVENTS]) { 638 struct nlattr *nl; 639 int rem; 640 641 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) { 642 struct nl80211_vendor_cmd_info *vinfo; 643 if (nla_len(nl) != sizeof(*vinfo)) { 644 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); 645 continue; 646 } 647 vinfo = nla_data(nl); 648 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u", 649 vinfo->vendor_id, vinfo->subcmd); 650 } 651 } 652 653 wiphy_info_wowlan_triggers(capa, 654 tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]); 655 656 if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA]) 657 capa->max_stations = 658 nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]); 659 660 if (tb[NL80211_ATTR_MAX_CSA_COUNTERS]) 661 capa->max_csa_counters = 662 nla_get_u8(tb[NL80211_ATTR_MAX_CSA_COUNTERS]); 663 664 return NL_SKIP; 665} 666 667 668static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 669 struct wiphy_info_data *info) 670{ 671 u32 feat; 672 struct nl_msg *msg; 673 int flags = 0; 674 675 os_memset(info, 0, sizeof(*info)); 676 info->capa = &drv->capa; 677 info->drv = drv; 678 679 feat = get_nl80211_protocol_features(drv); 680 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 681 flags = NLM_F_DUMP; 682 msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY); 683 if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { 684 nlmsg_free(msg); 685 return -1; 686 } 687 688 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 689 return -1; 690 691 if (info->auth_supported) 692 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 693 else if (!info->connect_supported) { 694 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 695 "authentication/association or connect commands"); 696 info->error = 1; 697 } 698 699 if (info->p2p_go_supported && info->p2p_client_supported) 700 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 701 if (info->p2p_concurrent) { 702 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 703 "interface (driver advertised support)"); 704 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 705 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 706 } 707 if (info->num_multichan_concurrent > 1) { 708 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 709 "concurrent (driver advertised support)"); 710 drv->capa.num_multichan_concurrent = 711 info->num_multichan_concurrent; 712 } 713 if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) 714 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support"); 715 716 /* default to 5000 since early versions of mac80211 don't set it */ 717 if (!drv->capa.max_remain_on_chan) 718 drv->capa.max_remain_on_chan = 5000; 719 720 drv->capa.wmm_ac_supported = info->wmm_ac_supported; 721 722 drv->capa.mac_addr_rand_sched_scan_supported = 723 info->mac_addr_rand_sched_scan_supported; 724 drv->capa.mac_addr_rand_scan_supported = 725 info->mac_addr_rand_scan_supported; 726 727 if (info->channel_switch_supported) { 728 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA; 729 if (!drv->capa.max_csa_counters) 730 drv->capa.max_csa_counters = 1; 731 } 732 733 if (!drv->capa.max_sched_scan_plans) { 734 drv->capa.max_sched_scan_plans = 1; 735 drv->capa.max_sched_scan_plan_interval = UINT32_MAX; 736 drv->capa.max_sched_scan_plan_iterations = 0; 737 } 738 739 return 0; 740} 741 742 743#ifdef CONFIG_DRIVER_NL80211_QCA 744 745static int dfs_info_handler(struct nl_msg *msg, void *arg) 746{ 747 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 748 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 749 int *dfs_capability_ptr = arg; 750 751 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 752 genlmsg_attrlen(gnlh, 0), NULL); 753 754 if (tb[NL80211_ATTR_VENDOR_DATA]) { 755 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; 756 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; 757 758 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, 759 nla_data(nl_vend), nla_len(nl_vend), NULL); 760 761 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) { 762 u32 val; 763 val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]); 764 wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u", 765 val); 766 *dfs_capability_ptr = val; 767 } 768 } 769 770 return NL_SKIP; 771} 772 773 774static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv) 775{ 776 struct nl_msg *msg; 777 int dfs_capability = 0; 778 int ret; 779 780 if (!drv->dfs_vendor_cmd_avail) 781 return; 782 783 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 784 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 785 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 786 QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) { 787 nlmsg_free(msg); 788 return; 789 } 790 791 ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability); 792 if (!ret && dfs_capability) 793 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD; 794} 795 796 797struct features_info { 798 u8 *flags; 799 size_t flags_len; 800 struct wpa_driver_capa *capa; 801}; 802 803 804static int features_info_handler(struct nl_msg *msg, void *arg) 805{ 806 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 807 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 808 struct features_info *info = arg; 809 struct nlattr *nl_vend, *attr; 810 811 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 812 genlmsg_attrlen(gnlh, 0), NULL); 813 814 nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; 815 if (nl_vend) { 816 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; 817 818 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, 819 nla_data(nl_vend), nla_len(nl_vend), NULL); 820 821 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS]; 822 if (attr) { 823 int len = nla_len(attr); 824 info->flags = os_malloc(len); 825 if (info->flags != NULL) { 826 os_memcpy(info->flags, nla_data(attr), len); 827 info->flags_len = len; 828 } 829 } 830 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_CONCURRENCY_CAPA]; 831 if (attr) 832 info->capa->conc_capab = nla_get_u32(attr); 833 834 attr = tb_vendor[ 835 QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_2_4_BAND]; 836 if (attr) 837 info->capa->max_conc_chan_2_4 = nla_get_u32(attr); 838 839 attr = tb_vendor[ 840 QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_5_0_BAND]; 841 if (attr) 842 info->capa->max_conc_chan_5_0 = nla_get_u32(attr); 843 } 844 845 return NL_SKIP; 846} 847 848 849static int check_feature(enum qca_wlan_vendor_features feature, 850 struct features_info *info) 851{ 852 size_t idx = feature / 8; 853 854 return (idx < info->flags_len) && 855 (info->flags[idx] & BIT(feature % 8)); 856} 857 858 859static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv) 860{ 861 struct nl_msg *msg; 862 struct features_info info; 863 int ret; 864 865 if (!drv->get_features_vendor_cmd_avail) 866 return; 867 868 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || 869 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || 870 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, 871 QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) { 872 nlmsg_free(msg); 873 return; 874 } 875 876 os_memset(&info, 0, sizeof(info)); 877 info.capa = &drv->capa; 878 ret = send_and_recv_msgs(drv, msg, features_info_handler, &info); 879 if (ret || !info.flags) 880 return; 881 882 if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info)) 883 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD; 884 885 if (check_feature(QCA_WLAN_VENDOR_FEATURE_SUPPORT_HW_MODE_ANY, &info)) 886 drv->capa.flags |= WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY; 887 888 if (check_feature(QCA_WLAN_VENDOR_FEATURE_OFFCHANNEL_SIMULTANEOUS, 889 &info)) 890 drv->capa.flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS; 891 os_free(info.flags); 892} 893 894#endif /* CONFIG_DRIVER_NL80211_QCA */ 895 896 897int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 898{ 899 struct wiphy_info_data info; 900 if (wpa_driver_nl80211_get_info(drv, &info)) 901 return -1; 902 903 if (info.error) 904 return -1; 905 906 drv->has_capability = 1; 907 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 908 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 909 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 910 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK | 911 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B | 912 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192; 913 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 914 WPA_DRIVER_AUTH_SHARED | 915 WPA_DRIVER_AUTH_LEAP; 916 917 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 918 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 919 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 920 921 /* 922 * As all cfg80211 drivers must support cases where the AP interface is 923 * removed without the knowledge of wpa_supplicant/hostapd, e.g., in 924 * case that the user space daemon has crashed, they must be able to 925 * cleanup all stations and key entries in the AP tear down flow. Thus, 926 * this flag can/should always be set for cfg80211 drivers. 927 */ 928 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT; 929 930 if (!info.device_ap_sme) { 931 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 932 933 /* 934 * No AP SME is currently assumed to also indicate no AP MLME 935 * in the driver/firmware. 936 */ 937 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 938 } 939 940 drv->device_ap_sme = info.device_ap_sme; 941 drv->poll_command_supported = info.poll_command_supported; 942 drv->data_tx_status = info.data_tx_status; 943 drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported; 944 if (info.set_qos_map_supported) 945 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING; 946 drv->have_low_prio_scan = info.have_low_prio_scan; 947 948 /* 949 * If poll command and tx status are supported, mac80211 is new enough 950 * to have everything we need to not need monitor interfaces. 951 */ 952 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 953 954 if (drv->device_ap_sme && drv->use_monitor) { 955 /* 956 * Non-mac80211 drivers may not support monitor interface. 957 * Make sure we do not get stuck with incorrect capability here 958 * by explicitly testing this. 959 */ 960 if (!info.monitor_supported) { 961 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 962 "with device_ap_sme since no monitor mode " 963 "support detected"); 964 drv->use_monitor = 0; 965 } 966 } 967 968 /* 969 * If we aren't going to use monitor interfaces, but the 970 * driver doesn't support data TX status, we won't get TX 971 * status for EAPOL frames. 972 */ 973 if (!drv->use_monitor && !info.data_tx_status) 974 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 975 976#ifdef CONFIG_DRIVER_NL80211_QCA 977 qca_nl80211_check_dfs_capa(drv); 978 qca_nl80211_get_features(drv); 979 980 /* 981 * To enable offchannel simultaneous support in wpa_supplicant, the 982 * underlying driver needs to support the same along with offchannel TX. 983 * Offchannel TX support is needed since remain_on_channel and 984 * action_tx use some common data structures and hence cannot be 985 * scheduled simultaneously. 986 */ 987 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) 988 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS; 989#endif /* CONFIG_DRIVER_NL80211_QCA */ 990 991 return 0; 992} 993 994 995struct phy_info_arg { 996 u16 *num_modes; 997 struct hostapd_hw_modes *modes; 998 int last_mode, last_chan_idx; 999 int failed; 1000}; 1001 1002static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, 1003 struct nlattr *ampdu_factor, 1004 struct nlattr *ampdu_density, 1005 struct nlattr *mcs_set) 1006{ 1007 if (capa) 1008 mode->ht_capab = nla_get_u16(capa); 1009 1010 if (ampdu_factor) 1011 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; 1012 1013 if (ampdu_density) 1014 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; 1015 1016 if (mcs_set && nla_len(mcs_set) >= 16) { 1017 u8 *mcs; 1018 mcs = nla_data(mcs_set); 1019 os_memcpy(mode->mcs_set, mcs, 16); 1020 } 1021} 1022 1023 1024static void phy_info_vht_capa(struct hostapd_hw_modes *mode, 1025 struct nlattr *capa, 1026 struct nlattr *mcs_set) 1027{ 1028 if (capa) 1029 mode->vht_capab = nla_get_u32(capa); 1030 1031 if (mcs_set && nla_len(mcs_set) >= 8) { 1032 u8 *mcs; 1033 mcs = nla_data(mcs_set); 1034 os_memcpy(mode->vht_mcs_set, mcs, 8); 1035 } 1036} 1037 1038 1039static void phy_info_freq(struct hostapd_hw_modes *mode, 1040 struct hostapd_channel_data *chan, 1041 struct nlattr *tb_freq[]) 1042{ 1043 u8 channel; 1044 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); 1045 chan->flag = 0; 1046 chan->dfs_cac_ms = 0; 1047 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES) 1048 chan->chan = channel; 1049 1050 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) 1051 chan->flag |= HOSTAPD_CHAN_DISABLED; 1052 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR]) 1053 chan->flag |= HOSTAPD_CHAN_NO_IR; 1054 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) 1055 chan->flag |= HOSTAPD_CHAN_RADAR; 1056 if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY]) 1057 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY; 1058 if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT]) 1059 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT; 1060 1061 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) { 1062 enum nl80211_dfs_state state = 1063 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]); 1064 1065 switch (state) { 1066 case NL80211_DFS_USABLE: 1067 chan->flag |= HOSTAPD_CHAN_DFS_USABLE; 1068 break; 1069 case NL80211_DFS_AVAILABLE: 1070 chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE; 1071 break; 1072 case NL80211_DFS_UNAVAILABLE: 1073 chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE; 1074 break; 1075 } 1076 } 1077 1078 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) { 1079 chan->dfs_cac_ms = nla_get_u32( 1080 tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]); 1081 } 1082} 1083 1084 1085static int phy_info_freqs(struct phy_info_arg *phy_info, 1086 struct hostapd_hw_modes *mode, struct nlattr *tb) 1087{ 1088 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 1089 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 1090 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 1091 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG }, 1092 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 1093 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 1094 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 }, 1095 }; 1096 int new_channels = 0; 1097 struct hostapd_channel_data *channel; 1098 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; 1099 struct nlattr *nl_freq; 1100 int rem_freq, idx; 1101 1102 if (tb == NULL) 1103 return NL_OK; 1104 1105 nla_for_each_nested(nl_freq, tb, rem_freq) { 1106 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 1107 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 1108 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 1109 continue; 1110 new_channels++; 1111 } 1112 1113 channel = os_realloc_array(mode->channels, 1114 mode->num_channels + new_channels, 1115 sizeof(struct hostapd_channel_data)); 1116 if (!channel) 1117 return NL_STOP; 1118 1119 mode->channels = channel; 1120 mode->num_channels += new_channels; 1121 1122 idx = phy_info->last_chan_idx; 1123 1124 nla_for_each_nested(nl_freq, tb, rem_freq) { 1125 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, 1126 nla_data(nl_freq), nla_len(nl_freq), freq_policy); 1127 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) 1128 continue; 1129 phy_info_freq(mode, &mode->channels[idx], tb_freq); 1130 idx++; 1131 } 1132 phy_info->last_chan_idx = idx; 1133 1134 return NL_OK; 1135} 1136 1137 1138static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) 1139{ 1140 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { 1141 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, 1142 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = 1143 { .type = NLA_FLAG }, 1144 }; 1145 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; 1146 struct nlattr *nl_rate; 1147 int rem_rate, idx; 1148 1149 if (tb == NULL) 1150 return NL_OK; 1151 1152 nla_for_each_nested(nl_rate, tb, rem_rate) { 1153 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 1154 nla_data(nl_rate), nla_len(nl_rate), 1155 rate_policy); 1156 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 1157 continue; 1158 mode->num_rates++; 1159 } 1160 1161 mode->rates = os_calloc(mode->num_rates, sizeof(int)); 1162 if (!mode->rates) 1163 return NL_STOP; 1164 1165 idx = 0; 1166 1167 nla_for_each_nested(nl_rate, tb, rem_rate) { 1168 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, 1169 nla_data(nl_rate), nla_len(nl_rate), 1170 rate_policy); 1171 if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) 1172 continue; 1173 mode->rates[idx] = nla_get_u32( 1174 tb_rate[NL80211_BITRATE_ATTR_RATE]); 1175 idx++; 1176 } 1177 1178 return NL_OK; 1179} 1180 1181 1182static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) 1183{ 1184 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; 1185 struct hostapd_hw_modes *mode; 1186 int ret; 1187 1188 if (phy_info->last_mode != nl_band->nla_type) { 1189 mode = os_realloc_array(phy_info->modes, 1190 *phy_info->num_modes + 1, 1191 sizeof(*mode)); 1192 if (!mode) { 1193 phy_info->failed = 1; 1194 return NL_STOP; 1195 } 1196 phy_info->modes = mode; 1197 1198 mode = &phy_info->modes[*(phy_info->num_modes)]; 1199 os_memset(mode, 0, sizeof(*mode)); 1200 mode->mode = NUM_HOSTAPD_MODES; 1201 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN | 1202 HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN; 1203 1204 /* 1205 * Unsupported VHT MCS stream is defined as value 3, so the VHT 1206 * MCS RX/TX map must be initialized with 0xffff to mark all 8 1207 * possible streams as unsupported. This will be overridden if 1208 * driver advertises VHT support. 1209 */ 1210 mode->vht_mcs_set[0] = 0xff; 1211 mode->vht_mcs_set[1] = 0xff; 1212 mode->vht_mcs_set[4] = 0xff; 1213 mode->vht_mcs_set[5] = 0xff; 1214 1215 *(phy_info->num_modes) += 1; 1216 phy_info->last_mode = nl_band->nla_type; 1217 phy_info->last_chan_idx = 0; 1218 } else 1219 mode = &phy_info->modes[*(phy_info->num_modes) - 1]; 1220 1221 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), 1222 nla_len(nl_band), NULL); 1223 1224 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], 1225 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], 1226 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], 1227 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); 1228 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], 1229 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); 1230 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); 1231 if (ret == NL_OK) 1232 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); 1233 if (ret != NL_OK) { 1234 phy_info->failed = 1; 1235 return ret; 1236 } 1237 1238 return NL_OK; 1239} 1240 1241 1242static int phy_info_handler(struct nl_msg *msg, void *arg) 1243{ 1244 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 1245 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1246 struct phy_info_arg *phy_info = arg; 1247 struct nlattr *nl_band; 1248 int rem_band; 1249 1250 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1251 genlmsg_attrlen(gnlh, 0), NULL); 1252 1253 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) 1254 return NL_SKIP; 1255 1256 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) 1257 { 1258 int res = phy_info_band(phy_info, nl_band); 1259 if (res != NL_OK) 1260 return res; 1261 } 1262 1263 return NL_SKIP; 1264} 1265 1266 1267static struct hostapd_hw_modes * 1268wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, 1269 u16 *num_modes) 1270{ 1271 u16 m; 1272 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; 1273 int i, mode11g_idx = -1; 1274 1275 /* heuristic to set up modes */ 1276 for (m = 0; m < *num_modes; m++) { 1277 if (!modes[m].num_channels) 1278 continue; 1279 if (modes[m].channels[0].freq < 4000) { 1280 modes[m].mode = HOSTAPD_MODE_IEEE80211B; 1281 for (i = 0; i < modes[m].num_rates; i++) { 1282 if (modes[m].rates[i] > 200) { 1283 modes[m].mode = HOSTAPD_MODE_IEEE80211G; 1284 break; 1285 } 1286 } 1287 } else if (modes[m].channels[0].freq > 50000) 1288 modes[m].mode = HOSTAPD_MODE_IEEE80211AD; 1289 else 1290 modes[m].mode = HOSTAPD_MODE_IEEE80211A; 1291 } 1292 1293 /* If only 802.11g mode is included, use it to construct matching 1294 * 802.11b mode data. */ 1295 1296 for (m = 0; m < *num_modes; m++) { 1297 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) 1298 return modes; /* 802.11b already included */ 1299 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1300 mode11g_idx = m; 1301 } 1302 1303 if (mode11g_idx < 0) 1304 return modes; /* 2.4 GHz band not supported at all */ 1305 1306 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); 1307 if (nmodes == NULL) 1308 return modes; /* Could not add 802.11b mode */ 1309 1310 mode = &nmodes[*num_modes]; 1311 os_memset(mode, 0, sizeof(*mode)); 1312 (*num_modes)++; 1313 modes = nmodes; 1314 1315 mode->mode = HOSTAPD_MODE_IEEE80211B; 1316 1317 mode11g = &modes[mode11g_idx]; 1318 mode->num_channels = mode11g->num_channels; 1319 mode->channels = os_malloc(mode11g->num_channels * 1320 sizeof(struct hostapd_channel_data)); 1321 if (mode->channels == NULL) { 1322 (*num_modes)--; 1323 return modes; /* Could not add 802.11b mode */ 1324 } 1325 os_memcpy(mode->channels, mode11g->channels, 1326 mode11g->num_channels * sizeof(struct hostapd_channel_data)); 1327 1328 mode->num_rates = 0; 1329 mode->rates = os_malloc(4 * sizeof(int)); 1330 if (mode->rates == NULL) { 1331 os_free(mode->channels); 1332 (*num_modes)--; 1333 return modes; /* Could not add 802.11b mode */ 1334 } 1335 1336 for (i = 0; i < mode11g->num_rates; i++) { 1337 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && 1338 mode11g->rates[i] != 55 && mode11g->rates[i] != 110) 1339 continue; 1340 mode->rates[mode->num_rates] = mode11g->rates[i]; 1341 mode->num_rates++; 1342 if (mode->num_rates == 4) 1343 break; 1344 } 1345 1346 if (mode->num_rates == 0) { 1347 os_free(mode->channels); 1348 os_free(mode->rates); 1349 (*num_modes)--; 1350 return modes; /* No 802.11b rates */ 1351 } 1352 1353 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " 1354 "information"); 1355 1356 return modes; 1357} 1358 1359 1360static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, 1361 int end) 1362{ 1363 int c; 1364 1365 for (c = 0; c < mode->num_channels; c++) { 1366 struct hostapd_channel_data *chan = &mode->channels[c]; 1367 if (chan->freq - 10 >= start && chan->freq + 10 <= end) 1368 chan->flag |= HOSTAPD_CHAN_HT40; 1369 } 1370} 1371 1372 1373static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, 1374 int end) 1375{ 1376 int c; 1377 1378 for (c = 0; c < mode->num_channels; c++) { 1379 struct hostapd_channel_data *chan = &mode->channels[c]; 1380 if (!(chan->flag & HOSTAPD_CHAN_HT40)) 1381 continue; 1382 if (chan->freq - 30 >= start && chan->freq - 10 <= end) 1383 chan->flag |= HOSTAPD_CHAN_HT40MINUS; 1384 if (chan->freq + 10 >= start && chan->freq + 30 <= end) 1385 chan->flag |= HOSTAPD_CHAN_HT40PLUS; 1386 } 1387} 1388 1389 1390static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp, 1391 struct phy_info_arg *results) 1392{ 1393 u16 m; 1394 1395 for (m = 0; m < *results->num_modes; m++) { 1396 int c; 1397 struct hostapd_hw_modes *mode = &results->modes[m]; 1398 1399 for (c = 0; c < mode->num_channels; c++) { 1400 struct hostapd_channel_data *chan = &mode->channels[c]; 1401 if ((u32) chan->freq - 10 >= start && 1402 (u32) chan->freq + 10 <= end) 1403 chan->max_tx_power = max_eirp; 1404 } 1405 } 1406} 1407 1408 1409static void nl80211_reg_rule_ht40(u32 start, u32 end, 1410 struct phy_info_arg *results) 1411{ 1412 u16 m; 1413 1414 for (m = 0; m < *results->num_modes; m++) { 1415 if (!(results->modes[m].ht_capab & 1416 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1417 continue; 1418 nl80211_set_ht40_mode(&results->modes[m], start, end); 1419 } 1420} 1421 1422 1423static void nl80211_reg_rule_sec(struct nlattr *tb[], 1424 struct phy_info_arg *results) 1425{ 1426 u32 start, end, max_bw; 1427 u16 m; 1428 1429 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1430 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 1431 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 1432 return; 1433 1434 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1435 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1436 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1437 1438 if (max_bw < 20) 1439 return; 1440 1441 for (m = 0; m < *results->num_modes; m++) { 1442 if (!(results->modes[m].ht_capab & 1443 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1444 continue; 1445 nl80211_set_ht40_mode_sec(&results->modes[m], start, end); 1446 } 1447} 1448 1449 1450static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start, 1451 int end, int max_bw) 1452{ 1453 int c; 1454 1455 for (c = 0; c < mode->num_channels; c++) { 1456 struct hostapd_channel_data *chan = &mode->channels[c]; 1457 if (chan->freq - 10 >= start && chan->freq + 70 <= end) 1458 chan->flag |= HOSTAPD_CHAN_VHT_10_70; 1459 1460 if (chan->freq - 30 >= start && chan->freq + 50 <= end) 1461 chan->flag |= HOSTAPD_CHAN_VHT_30_50; 1462 1463 if (chan->freq - 50 >= start && chan->freq + 30 <= end) 1464 chan->flag |= HOSTAPD_CHAN_VHT_50_30; 1465 1466 if (chan->freq - 70 >= start && chan->freq + 10 <= end) 1467 chan->flag |= HOSTAPD_CHAN_VHT_70_10; 1468 1469 if (max_bw >= 160) { 1470 if (chan->freq - 10 >= start && chan->freq + 150 <= end) 1471 chan->flag |= HOSTAPD_CHAN_VHT_10_150; 1472 1473 if (chan->freq - 30 >= start && chan->freq + 130 <= end) 1474 chan->flag |= HOSTAPD_CHAN_VHT_30_130; 1475 1476 if (chan->freq - 50 >= start && chan->freq + 110 <= end) 1477 chan->flag |= HOSTAPD_CHAN_VHT_50_110; 1478 1479 if (chan->freq - 70 >= start && chan->freq + 90 <= end) 1480 chan->flag |= HOSTAPD_CHAN_VHT_70_90; 1481 1482 if (chan->freq - 90 >= start && chan->freq + 70 <= end) 1483 chan->flag |= HOSTAPD_CHAN_VHT_90_70; 1484 1485 if (chan->freq - 110 >= start && chan->freq + 50 <= end) 1486 chan->flag |= HOSTAPD_CHAN_VHT_110_50; 1487 1488 if (chan->freq - 130 >= start && chan->freq + 30 <= end) 1489 chan->flag |= HOSTAPD_CHAN_VHT_130_30; 1490 1491 if (chan->freq - 150 >= start && chan->freq + 10 <= end) 1492 chan->flag |= HOSTAPD_CHAN_VHT_150_10; 1493 } 1494 } 1495} 1496 1497 1498static void nl80211_reg_rule_vht(struct nlattr *tb[], 1499 struct phy_info_arg *results) 1500{ 1501 u32 start, end, max_bw; 1502 u16 m; 1503 1504 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1505 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || 1506 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) 1507 return; 1508 1509 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1510 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1511 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1512 1513 if (max_bw < 80) 1514 return; 1515 1516 for (m = 0; m < *results->num_modes; m++) { 1517 if (!(results->modes[m].ht_capab & 1518 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1519 continue; 1520 /* TODO: use a real VHT support indication */ 1521 if (!results->modes[m].vht_capab) 1522 continue; 1523 1524 nl80211_set_vht_mode(&results->modes[m], start, end, max_bw); 1525 } 1526} 1527 1528 1529static const char * dfs_domain_name(enum nl80211_dfs_regions region) 1530{ 1531 switch (region) { 1532 case NL80211_DFS_UNSET: 1533 return "DFS-UNSET"; 1534 case NL80211_DFS_FCC: 1535 return "DFS-FCC"; 1536 case NL80211_DFS_ETSI: 1537 return "DFS-ETSI"; 1538 case NL80211_DFS_JP: 1539 return "DFS-JP"; 1540 default: 1541 return "DFS-invalid"; 1542 } 1543} 1544 1545 1546static int nl80211_get_reg(struct nl_msg *msg, void *arg) 1547{ 1548 struct phy_info_arg *results = arg; 1549 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 1550 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 1551 struct nlattr *nl_rule; 1552 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; 1553 int rem_rule; 1554 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 1555 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 1556 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 1557 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 1558 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 1559 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 1560 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 1561 }; 1562 1563 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 1564 genlmsg_attrlen(gnlh, 0), NULL); 1565 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || 1566 !tb_msg[NL80211_ATTR_REG_RULES]) { 1567 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " 1568 "available"); 1569 return NL_SKIP; 1570 } 1571 1572 if (tb_msg[NL80211_ATTR_DFS_REGION]) { 1573 enum nl80211_dfs_regions dfs_domain; 1574 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]); 1575 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)", 1576 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 1577 dfs_domain_name(dfs_domain)); 1578 } else { 1579 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", 1580 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); 1581 } 1582 1583 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1584 { 1585 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0; 1586 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1587 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1588 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL || 1589 tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL) 1590 continue; 1591 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000; 1592 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000; 1593 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 1594 max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100; 1595 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 1596 max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; 1597 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS]) 1598 flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]); 1599 1600 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s", 1601 start, end, max_bw, max_eirp, 1602 flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "", 1603 flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "", 1604 flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "", 1605 flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" : 1606 "", 1607 flags & NL80211_RRF_DFS ? " (DFS)" : "", 1608 flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "", 1609 flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "", 1610 flags & NL80211_RRF_NO_IR ? " (no IR)" : ""); 1611 if (max_bw >= 40) 1612 nl80211_reg_rule_ht40(start, end, results); 1613 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 1614 nl80211_reg_rule_max_eirp(start, end, max_eirp, 1615 results); 1616 } 1617 1618 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1619 { 1620 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1621 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1622 nl80211_reg_rule_sec(tb_rule, results); 1623 } 1624 1625 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) 1626 { 1627 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, 1628 nla_data(nl_rule), nla_len(nl_rule), reg_policy); 1629 nl80211_reg_rule_vht(tb_rule, results); 1630 } 1631 1632 return NL_SKIP; 1633} 1634 1635 1636static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv, 1637 struct phy_info_arg *results) 1638{ 1639 struct nl_msg *msg; 1640 1641 msg = nlmsg_alloc(); 1642 if (!msg) 1643 return -ENOMEM; 1644 1645 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 1646 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); 1647} 1648 1649 1650struct hostapd_hw_modes * 1651nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) 1652{ 1653 u32 feat; 1654 struct i802_bss *bss = priv; 1655 struct wpa_driver_nl80211_data *drv = bss->drv; 1656 int nl_flags = 0; 1657 struct nl_msg *msg; 1658 struct phy_info_arg result = { 1659 .num_modes = num_modes, 1660 .modes = NULL, 1661 .last_mode = -1, 1662 .failed = 0, 1663 }; 1664 1665 *num_modes = 0; 1666 *flags = 0; 1667 1668 feat = get_nl80211_protocol_features(drv); 1669 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 1670 nl_flags = NLM_F_DUMP; 1671 if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) || 1672 nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { 1673 nlmsg_free(msg); 1674 return NULL; 1675 } 1676 1677 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { 1678 nl80211_set_regulatory_flags(drv, &result); 1679 if (result.failed) { 1680 int i; 1681 1682 for (i = 0; result.modes && i < *num_modes; i++) { 1683 os_free(result.modes[i].channels); 1684 os_free(result.modes[i].rates); 1685 } 1686 os_free(result.modes); 1687 return NULL; 1688 } 1689 return wpa_driver_nl80211_postprocess_modes(result.modes, 1690 num_modes); 1691 } 1692 1693 return NULL; 1694} 1695