beacon.c revision 346981
1/* 2 * hostapd / IEEE 802.11 Management: Beacon and Probe Request/Response 3 * Copyright (c) 2002-2004, Instant802 Networks, Inc. 4 * Copyright (c) 2005-2006, Devicescape Software, Inc. 5 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi> 6 * 7 * This software may be distributed under the terms of the BSD license. 8 * See README for more details. 9 */ 10 11#include "utils/includes.h" 12 13#ifndef CONFIG_NATIVE_WINDOWS 14 15#include "utils/common.h" 16#include "common/ieee802_11_defs.h" 17#include "common/ieee802_11_common.h" 18#include "common/hw_features_common.h" 19#include "common/wpa_ctrl.h" 20#include "wps/wps_defs.h" 21#include "p2p/p2p.h" 22#include "hostapd.h" 23#include "ieee802_11.h" 24#include "wpa_auth.h" 25#include "wmm.h" 26#include "ap_config.h" 27#include "sta_info.h" 28#include "p2p_hostapd.h" 29#include "ap_drv_ops.h" 30#include "beacon.h" 31#include "hs20.h" 32#include "dfs.h" 33#include "taxonomy.h" 34#include "ieee802_11_auth.h" 35 36 37#ifdef NEED_AP_MLME 38 39static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid, 40 size_t len) 41{ 42 size_t i; 43 44 for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) { 45 if (hapd->conf->radio_measurements[i]) 46 break; 47 } 48 49 if (i == RRM_CAPABILITIES_IE_LEN || len < 2 + RRM_CAPABILITIES_IE_LEN) 50 return eid; 51 52 *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES; 53 *eid++ = RRM_CAPABILITIES_IE_LEN; 54 os_memcpy(eid, hapd->conf->radio_measurements, RRM_CAPABILITIES_IE_LEN); 55 56 return eid + RRM_CAPABILITIES_IE_LEN; 57} 58 59 60static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len) 61{ 62 if (len < 2 + 5) 63 return eid; 64 65#ifdef CONFIG_TESTING_OPTIONS 66 if (hapd->conf->bss_load_test_set) { 67 *eid++ = WLAN_EID_BSS_LOAD; 68 *eid++ = 5; 69 os_memcpy(eid, hapd->conf->bss_load_test, 5); 70 eid += 5; 71 return eid; 72 } 73#endif /* CONFIG_TESTING_OPTIONS */ 74 if (hapd->conf->bss_load_update_period) { 75 *eid++ = WLAN_EID_BSS_LOAD; 76 *eid++ = 5; 77 WPA_PUT_LE16(eid, hapd->num_sta); 78 eid += 2; 79 *eid++ = hapd->iface->channel_utilization; 80 WPA_PUT_LE16(eid, 0); /* no available admission capabity */ 81 eid += 2; 82 } 83 return eid; 84} 85 86 87static u8 ieee802_11_erp_info(struct hostapd_data *hapd) 88{ 89 u8 erp = 0; 90 91 if (hapd->iface->current_mode == NULL || 92 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 93 return 0; 94 95 if (hapd->iface->olbc) 96 erp |= ERP_INFO_USE_PROTECTION; 97 if (hapd->iface->num_sta_non_erp > 0) { 98 erp |= ERP_INFO_NON_ERP_PRESENT | 99 ERP_INFO_USE_PROTECTION; 100 } 101 if (hapd->iface->num_sta_no_short_preamble > 0 || 102 hapd->iconf->preamble == LONG_PREAMBLE) 103 erp |= ERP_INFO_BARKER_PREAMBLE_MODE; 104 105 return erp; 106} 107 108 109static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid) 110{ 111 *eid++ = WLAN_EID_DS_PARAMS; 112 *eid++ = 1; 113 *eid++ = hapd->iconf->channel; 114 return eid; 115} 116 117 118static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid) 119{ 120 if (hapd->iface->current_mode == NULL || 121 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 122 return eid; 123 124 /* Set NonERP_present and use_protection bits if there 125 * are any associated NonERP stations. */ 126 /* TODO: use_protection bit can be set to zero even if 127 * there are NonERP stations present. This optimization 128 * might be useful if NonERP stations are "quiet". 129 * See 802.11g/D6 E-1 for recommended practice. 130 * In addition, Non ERP present might be set, if AP detects Non ERP 131 * operation on other APs. */ 132 133 /* Add ERP Information element */ 134 *eid++ = WLAN_EID_ERP_INFO; 135 *eid++ = 1; 136 *eid++ = ieee802_11_erp_info(hapd); 137 138 return eid; 139} 140 141 142static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid) 143{ 144 u8 *pos = eid; 145 u8 local_pwr_constraint = 0; 146 int dfs; 147 148 if (hapd->iface->current_mode == NULL || 149 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A) 150 return eid; 151 152 /* Let host drivers add this IE if DFS support is offloaded */ 153 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) 154 return eid; 155 156 /* 157 * There is no DFS support and power constraint was not directly 158 * requested by config option. 159 */ 160 if (!hapd->iconf->ieee80211h && 161 hapd->iconf->local_pwr_constraint == -1) 162 return eid; 163 164 /* Check if DFS is required by regulatory. */ 165 dfs = hostapd_is_dfs_required(hapd->iface); 166 if (dfs < 0) { 167 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d", 168 dfs); 169 dfs = 0; 170 } 171 172 if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1) 173 return eid; 174 175 /* 176 * ieee80211h (DFS) is enabled so Power Constraint element shall 177 * be added when running on DFS channel whenever local_pwr_constraint 178 * is configured or not. In order to meet regulations when TPC is not 179 * implemented using a transmit power that is below the legal maximum 180 * (including any mitigation factor) should help. In this case, 181 * indicate 3 dB below maximum allowed transmit power. 182 */ 183 if (hapd->iconf->local_pwr_constraint == -1) 184 local_pwr_constraint = 3; 185 186 /* 187 * A STA that is not an AP shall use a transmit power less than or 188 * equal to the local maximum transmit power level for the channel. 189 * The local maximum transmit power can be calculated from the formula: 190 * local max TX pwr = max TX pwr - local pwr constraint 191 * Where max TX pwr is maximum transmit power level specified for 192 * channel in Country element and local pwr constraint is specified 193 * for channel in this Power Constraint element. 194 */ 195 196 /* Element ID */ 197 *pos++ = WLAN_EID_PWR_CONSTRAINT; 198 /* Length */ 199 *pos++ = 1; 200 /* Local Power Constraint */ 201 if (local_pwr_constraint) 202 *pos++ = local_pwr_constraint; 203 else 204 *pos++ = hapd->iconf->local_pwr_constraint; 205 206 return pos; 207} 208 209 210static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing, 211 struct hostapd_channel_data *start, 212 struct hostapd_channel_data *prev) 213{ 214 if (end - pos < 3) 215 return pos; 216 217 /* first channel number */ 218 *pos++ = start->chan; 219 /* number of channels */ 220 *pos++ = (prev->chan - start->chan) / chan_spacing + 1; 221 /* maximum transmit power level */ 222 *pos++ = start->max_tx_power; 223 224 return pos; 225} 226 227 228static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid, 229 int max_len) 230{ 231 u8 *pos = eid; 232 u8 *end = eid + max_len; 233 int i; 234 struct hostapd_hw_modes *mode; 235 struct hostapd_channel_data *start, *prev; 236 int chan_spacing = 1; 237 238 if (!hapd->iconf->ieee80211d || max_len < 6 || 239 hapd->iface->current_mode == NULL) 240 return eid; 241 242 *pos++ = WLAN_EID_COUNTRY; 243 pos++; /* length will be set later */ 244 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */ 245 pos += 3; 246 247 mode = hapd->iface->current_mode; 248 if (mode->mode == HOSTAPD_MODE_IEEE80211A) 249 chan_spacing = 4; 250 251 start = prev = NULL; 252 for (i = 0; i < mode->num_channels; i++) { 253 struct hostapd_channel_data *chan = &mode->channels[i]; 254 if (chan->flag & HOSTAPD_CHAN_DISABLED) 255 continue; 256 if (start && prev && 257 prev->chan + chan_spacing == chan->chan && 258 start->max_tx_power == chan->max_tx_power) { 259 prev = chan; 260 continue; /* can use same entry */ 261 } 262 263 if (start && prev) { 264 pos = hostapd_eid_country_add(pos, end, chan_spacing, 265 start, prev); 266 start = NULL; 267 } 268 269 /* Start new group */ 270 start = prev = chan; 271 } 272 273 if (start) { 274 pos = hostapd_eid_country_add(pos, end, chan_spacing, 275 start, prev); 276 } 277 278 if ((pos - eid) & 1) { 279 if (end - pos < 1) 280 return eid; 281 *pos++ = 0; /* pad for 16-bit alignment */ 282 } 283 284 eid[1] = (pos - eid) - 2; 285 286 return pos; 287} 288 289 290static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len) 291{ 292 const u8 *ie; 293 size_t ielen; 294 295 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); 296 if (ie == NULL || ielen > len) 297 return eid; 298 299 os_memcpy(eid, ie, ielen); 300 return eid + ielen; 301} 302 303 304static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid) 305{ 306#ifdef CONFIG_TESTING_OPTIONS 307 if (hapd->iface->cs_oper_class && hapd->iconf->ecsa_ie_only) 308 return eid; 309#endif /* CONFIG_TESTING_OPTIONS */ 310 311 if (!hapd->cs_freq_params.channel) 312 return eid; 313 314 *eid++ = WLAN_EID_CHANNEL_SWITCH; 315 *eid++ = 3; 316 *eid++ = hapd->cs_block_tx; 317 *eid++ = hapd->cs_freq_params.channel; 318 *eid++ = hapd->cs_count; 319 320 return eid; 321} 322 323 324static u8 * hostapd_eid_ecsa(struct hostapd_data *hapd, u8 *eid) 325{ 326 if (!hapd->cs_freq_params.channel || !hapd->iface->cs_oper_class) 327 return eid; 328 329 *eid++ = WLAN_EID_EXT_CHANSWITCH_ANN; 330 *eid++ = 4; 331 *eid++ = hapd->cs_block_tx; 332 *eid++ = hapd->iface->cs_oper_class; 333 *eid++ = hapd->cs_freq_params.channel; 334 *eid++ = hapd->cs_count; 335 336 return eid; 337} 338 339 340static u8 * hostapd_eid_supported_op_classes(struct hostapd_data *hapd, u8 *eid) 341{ 342 u8 op_class, channel; 343 344 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA) || 345 !hapd->iface->freq) 346 return eid; 347 348 if (ieee80211_freq_to_channel_ext(hapd->iface->freq, 349 hapd->iconf->secondary_channel, 350 hapd->iconf->vht_oper_chwidth, 351 &op_class, &channel) == 352 NUM_HOSTAPD_MODES) 353 return eid; 354 355 *eid++ = WLAN_EID_SUPPORTED_OPERATING_CLASSES; 356 *eid++ = 2; 357 358 /* Current Operating Class */ 359 *eid++ = op_class; 360 361 /* TODO: Advertise all the supported operating classes */ 362 *eid++ = 0; 363 364 return eid; 365} 366 367 368static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd, 369 const struct ieee80211_mgmt *req, 370 int is_p2p, size_t *resp_len) 371{ 372 struct ieee80211_mgmt *resp; 373 u8 *pos, *epos, *csa_pos; 374 size_t buflen; 375 376#define MAX_PROBERESP_LEN 768 377 buflen = MAX_PROBERESP_LEN; 378#ifdef CONFIG_WPS 379 if (hapd->wps_probe_resp_ie) 380 buflen += wpabuf_len(hapd->wps_probe_resp_ie); 381#endif /* CONFIG_WPS */ 382#ifdef CONFIG_P2P 383 if (hapd->p2p_probe_resp_ie) 384 buflen += wpabuf_len(hapd->p2p_probe_resp_ie); 385#endif /* CONFIG_P2P */ 386#ifdef CONFIG_FST 387 if (hapd->iface->fst_ies) 388 buflen += wpabuf_len(hapd->iface->fst_ies); 389#endif /* CONFIG_FST */ 390 if (hapd->conf->vendor_elements) 391 buflen += wpabuf_len(hapd->conf->vendor_elements); 392 if (hapd->conf->vendor_vht) { 393 buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 394 2 + sizeof(struct ieee80211_vht_operation); 395 } 396 397#ifdef CONFIG_IEEE80211AX 398 if (hapd->iconf->ieee80211ax) { 399 buflen += 3 + sizeof(struct ieee80211_he_capabilities) + 400 3 + sizeof(struct ieee80211_he_operation) + 401 3 + sizeof(struct ieee80211_he_mu_edca_parameter_set); 402 } 403#endif /* CONFIG_IEEE80211AX */ 404 405 buflen += hostapd_mbo_ie_len(hapd); 406 buflen += hostapd_eid_owe_trans_len(hapd); 407 408 resp = os_zalloc(buflen); 409 if (resp == NULL) 410 return NULL; 411 412 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 413 414 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 415 WLAN_FC_STYPE_PROBE_RESP); 416 if (req) 417 os_memcpy(resp->da, req->sa, ETH_ALEN); 418 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 419 420 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 421 resp->u.probe_resp.beacon_int = 422 host_to_le16(hapd->iconf->beacon_int); 423 424 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 425 resp->u.probe_resp.capab_info = 426 host_to_le16(hostapd_own_capab_info(hapd)); 427 428 pos = resp->u.probe_resp.variable; 429 *pos++ = WLAN_EID_SSID; 430 *pos++ = hapd->conf->ssid.ssid_len; 431 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 432 pos += hapd->conf->ssid.ssid_len; 433 434 /* Supported rates */ 435 pos = hostapd_eid_supp_rates(hapd, pos); 436 437 /* DS Params */ 438 pos = hostapd_eid_ds_params(hapd, pos); 439 440 pos = hostapd_eid_country(hapd, pos, epos - pos); 441 442 /* Power Constraint element */ 443 pos = hostapd_eid_pwr_constraint(hapd, pos); 444 445 /* CSA IE */ 446 csa_pos = hostapd_eid_csa(hapd, pos); 447 if (csa_pos != pos) 448 hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1; 449 pos = csa_pos; 450 451 /* ERP Information element */ 452 pos = hostapd_eid_erp_info(hapd, pos); 453 454 /* Extended supported rates */ 455 pos = hostapd_eid_ext_supp_rates(hapd, pos); 456 457 /* RSN, MDIE */ 458 if (hapd->conf->wpa != WPA_PROTO_WPA) 459 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 460 461 pos = hostapd_eid_bss_load(hapd, pos, epos - pos); 462 463 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos); 464 465 /* eCSA IE */ 466 csa_pos = hostapd_eid_ecsa(hapd, pos); 467 if (csa_pos != pos) 468 hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1; 469 pos = csa_pos; 470 471 pos = hostapd_eid_supported_op_classes(hapd, pos); 472 473#ifdef CONFIG_IEEE80211N 474 /* Secondary Channel Offset element */ 475 /* TODO: The standard doesn't specify a position for this element. */ 476 pos = hostapd_eid_secondary_channel(hapd, pos); 477 478 pos = hostapd_eid_ht_capabilities(hapd, pos); 479 pos = hostapd_eid_ht_operation(hapd, pos); 480#endif /* CONFIG_IEEE80211N */ 481 482 pos = hostapd_eid_ext_capab(hapd, pos); 483 484 pos = hostapd_eid_time_adv(hapd, pos); 485 pos = hostapd_eid_time_zone(hapd, pos); 486 487 pos = hostapd_eid_interworking(hapd, pos); 488 pos = hostapd_eid_adv_proto(hapd, pos); 489 pos = hostapd_eid_roaming_consortium(hapd, pos); 490 491#ifdef CONFIG_FST 492 if (hapd->iface->fst_ies) { 493 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies), 494 wpabuf_len(hapd->iface->fst_ies)); 495 pos += wpabuf_len(hapd->iface->fst_ies); 496 } 497#endif /* CONFIG_FST */ 498 499#ifdef CONFIG_IEEE80211AC 500 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 501 pos = hostapd_eid_vht_capabilities(hapd, pos, 0); 502 pos = hostapd_eid_vht_operation(hapd, pos); 503 pos = hostapd_eid_txpower_envelope(hapd, pos); 504 pos = hostapd_eid_wb_chsw_wrapper(hapd, pos); 505 } 506#endif /* CONFIG_IEEE80211AC */ 507 508 pos = hostapd_eid_fils_indic(hapd, pos, 0); 509 510#ifdef CONFIG_IEEE80211AX 511 if (hapd->iconf->ieee80211ax) { 512 pos = hostapd_eid_he_capab(hapd, pos); 513 pos = hostapd_eid_he_operation(hapd, pos); 514 pos = hostapd_eid_he_mu_edca_parameter_set(hapd, pos); 515 } 516#endif /* CONFIG_IEEE80211AX */ 517 518#ifdef CONFIG_IEEE80211AC 519 if (hapd->conf->vendor_vht) 520 pos = hostapd_eid_vendor_vht(hapd, pos); 521#endif /* CONFIG_IEEE80211AC */ 522 523 /* WPA */ 524 if (hapd->conf->wpa == WPA_PROTO_WPA) 525 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 526 527 /* Wi-Fi Alliance WMM */ 528 pos = hostapd_eid_wmm(hapd, pos); 529 530#ifdef CONFIG_WPS 531 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 532 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 533 wpabuf_len(hapd->wps_probe_resp_ie)); 534 pos += wpabuf_len(hapd->wps_probe_resp_ie); 535 } 536#endif /* CONFIG_WPS */ 537 538#ifdef CONFIG_P2P 539 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 540 hapd->p2p_probe_resp_ie) { 541 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 542 wpabuf_len(hapd->p2p_probe_resp_ie)); 543 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 544 } 545#endif /* CONFIG_P2P */ 546#ifdef CONFIG_P2P_MANAGER 547 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 548 P2P_MANAGE) 549 pos = hostapd_eid_p2p_manage(hapd, pos); 550#endif /* CONFIG_P2P_MANAGER */ 551 552#ifdef CONFIG_HS20 553 pos = hostapd_eid_hs20_indication(hapd, pos); 554 pos = hostapd_eid_osen(hapd, pos); 555#endif /* CONFIG_HS20 */ 556 557 pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos); 558 pos = hostapd_eid_owe_trans(hapd, pos, (u8 *) resp + buflen - pos); 559 560 if (hapd->conf->vendor_elements) { 561 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements), 562 wpabuf_len(hapd->conf->vendor_elements)); 563 pos += wpabuf_len(hapd->conf->vendor_elements); 564 } 565 566 *resp_len = pos - (u8 *) resp; 567 return (u8 *) resp; 568} 569 570 571enum ssid_match_result { 572 NO_SSID_MATCH, 573 EXACT_SSID_MATCH, 574 WILDCARD_SSID_MATCH 575}; 576 577static enum ssid_match_result ssid_match(struct hostapd_data *hapd, 578 const u8 *ssid, size_t ssid_len, 579 const u8 *ssid_list, 580 size_t ssid_list_len) 581{ 582 const u8 *pos, *end; 583 int wildcard = 0; 584 585 if (ssid_len == 0) 586 wildcard = 1; 587 if (ssid_len == hapd->conf->ssid.ssid_len && 588 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0) 589 return EXACT_SSID_MATCH; 590 591 if (ssid_list == NULL) 592 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 593 594 pos = ssid_list; 595 end = ssid_list + ssid_list_len; 596 while (end - pos >= 1) { 597 if (2 + pos[1] > end - pos) 598 break; 599 if (pos[1] == 0) 600 wildcard = 1; 601 if (pos[1] == hapd->conf->ssid.ssid_len && 602 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0) 603 return EXACT_SSID_MATCH; 604 pos += 2 + pos[1]; 605 } 606 607 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 608} 609 610 611void sta_track_expire(struct hostapd_iface *iface, int force) 612{ 613 struct os_reltime now; 614 struct hostapd_sta_info *info; 615 616 if (!iface->num_sta_seen) 617 return; 618 619 os_get_reltime(&now); 620 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info, 621 list))) { 622 if (!force && 623 !os_reltime_expired(&now, &info->last_seen, 624 iface->conf->track_sta_max_age)) 625 break; 626 force = 0; 627 628 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for " 629 MACSTR, iface->bss[0]->conf->iface, 630 MAC2STR(info->addr)); 631 dl_list_del(&info->list); 632 iface->num_sta_seen--; 633 sta_track_del(info); 634 } 635} 636 637 638static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface, 639 const u8 *addr) 640{ 641 struct hostapd_sta_info *info; 642 643 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list) 644 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0) 645 return info; 646 647 return NULL; 648} 649 650 651void sta_track_add(struct hostapd_iface *iface, const u8 *addr, int ssi_signal) 652{ 653 struct hostapd_sta_info *info; 654 655 info = sta_track_get(iface, addr); 656 if (info) { 657 /* Move the most recent entry to the end of the list */ 658 dl_list_del(&info->list); 659 dl_list_add_tail(&iface->sta_seen, &info->list); 660 os_get_reltime(&info->last_seen); 661 info->ssi_signal = ssi_signal; 662 return; 663 } 664 665 /* Add a new entry */ 666 info = os_zalloc(sizeof(*info)); 667 if (info == NULL) 668 return; 669 os_memcpy(info->addr, addr, ETH_ALEN); 670 os_get_reltime(&info->last_seen); 671 info->ssi_signal = ssi_signal; 672 673 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) { 674 /* Expire oldest entry to make room for a new one */ 675 sta_track_expire(iface, 1); 676 } 677 678 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for " 679 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr)); 680 dl_list_add_tail(&iface->sta_seen, &info->list); 681 iface->num_sta_seen++; 682} 683 684 685struct hostapd_data * 686sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr, 687 const char *ifname) 688{ 689 struct hapd_interfaces *interfaces = iface->interfaces; 690 size_t i, j; 691 692 for (i = 0; i < interfaces->count; i++) { 693 struct hostapd_data *hapd = NULL; 694 695 iface = interfaces->iface[i]; 696 for (j = 0; j < iface->num_bss; j++) { 697 hapd = iface->bss[j]; 698 if (os_strcmp(ifname, hapd->conf->iface) == 0) 699 break; 700 hapd = NULL; 701 } 702 703 if (hapd && sta_track_get(iface, addr)) 704 return hapd; 705 } 706 707 return NULL; 708} 709 710 711#ifdef CONFIG_TAXONOMY 712void sta_track_claim_taxonomy_info(struct hostapd_iface *iface, const u8 *addr, 713 struct wpabuf **probe_ie_taxonomy) 714{ 715 struct hostapd_sta_info *info; 716 717 info = sta_track_get(iface, addr); 718 if (!info) 719 return; 720 721 wpabuf_free(*probe_ie_taxonomy); 722 *probe_ie_taxonomy = info->probe_ie_taxonomy; 723 info->probe_ie_taxonomy = NULL; 724} 725#endif /* CONFIG_TAXONOMY */ 726 727 728void handle_probe_req(struct hostapd_data *hapd, 729 const struct ieee80211_mgmt *mgmt, size_t len, 730 int ssi_signal) 731{ 732 u8 *resp; 733 struct ieee802_11_elems elems; 734 const u8 *ie; 735 size_t ie_len; 736 size_t i, resp_len; 737 int noack; 738 enum ssid_match_result res; 739 int ret; 740 u16 csa_offs[2]; 741 size_t csa_offs_len; 742 u32 session_timeout, acct_interim_interval; 743 struct vlan_description vlan_id; 744 struct hostapd_sta_wpa_psk_short *psk = NULL; 745 char *identity = NULL; 746 char *radius_cui = NULL; 747 748 if (len < IEEE80211_HDRLEN) 749 return; 750 ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN; 751 if (hapd->iconf->track_sta_max_num) 752 sta_track_add(hapd->iface, mgmt->sa, ssi_signal); 753 ie_len = len - IEEE80211_HDRLEN; 754 755 ret = ieee802_11_allowed_address(hapd, mgmt->sa, (const u8 *) mgmt, len, 756 &session_timeout, 757 &acct_interim_interval, &vlan_id, 758 &psk, &identity, &radius_cui, 1); 759 if (ret == HOSTAPD_ACL_REJECT) { 760 wpa_msg(hapd->msg_ctx, MSG_DEBUG, 761 "Ignore Probe Request frame from " MACSTR 762 " due to ACL reject ", MAC2STR(mgmt->sa)); 763 return; 764 } 765 766 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 767 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 768 mgmt->sa, mgmt->da, mgmt->bssid, 769 ie, ie_len, ssi_signal) > 0) 770 return; 771 772 if (!hapd->conf->send_probe_response) 773 return; 774 775 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 776 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 777 MAC2STR(mgmt->sa)); 778 return; 779 } 780 781 if ((!elems.ssid || !elems.supp_rates)) { 782 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 783 "without SSID or supported rates element", 784 MAC2STR(mgmt->sa)); 785 return; 786 } 787 788 /* 789 * No need to reply if the Probe Request frame was sent on an adjacent 790 * channel. IEEE Std 802.11-2012 describes this as a requirement for an 791 * AP with dot11RadioMeasurementActivated set to true, but strictly 792 * speaking does not allow such ignoring of Probe Request frames if 793 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce 794 * number of unnecessary Probe Response frames for cases where the STA 795 * is less likely to see them (Probe Request frame sent on a 796 * neighboring, but partially overlapping, channel). 797 */ 798 if (elems.ds_params && 799 hapd->iface->current_mode && 800 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G || 801 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) && 802 hapd->iconf->channel != elems.ds_params[0]) { 803 wpa_printf(MSG_DEBUG, 804 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u", 805 hapd->iconf->channel, elems.ds_params[0]); 806 return; 807 } 808 809#ifdef CONFIG_P2P 810 if (hapd->p2p && hapd->p2p_group && elems.wps_ie) { 811 struct wpabuf *wps; 812 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 813 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 814 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 815 "due to mismatch with Requested Device " 816 "Type"); 817 wpabuf_free(wps); 818 return; 819 } 820 wpabuf_free(wps); 821 } 822 823 if (hapd->p2p && hapd->p2p_group && elems.p2p) { 824 struct wpabuf *p2p; 825 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 826 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 827 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 828 "due to mismatch with Device ID"); 829 wpabuf_free(p2p); 830 return; 831 } 832 wpabuf_free(p2p); 833 } 834#endif /* CONFIG_P2P */ 835 836 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 && 837 elems.ssid_list_len == 0) { 838 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 839 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 840 return; 841 } 842 843#ifdef CONFIG_P2P 844 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 845 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 846 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 847 P2P_WILDCARD_SSID_LEN) == 0) { 848 /* Process P2P Wildcard SSID like Wildcard SSID */ 849 elems.ssid_len = 0; 850 } 851#endif /* CONFIG_P2P */ 852 853#ifdef CONFIG_TAXONOMY 854 { 855 struct sta_info *sta; 856 struct hostapd_sta_info *info; 857 858 if ((sta = ap_get_sta(hapd, mgmt->sa)) != NULL) { 859 taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len); 860 } else if ((info = sta_track_get(hapd->iface, 861 mgmt->sa)) != NULL) { 862 taxonomy_hostapd_sta_info_probe_req(hapd, info, 863 ie, ie_len); 864 } 865 } 866#endif /* CONFIG_TAXONOMY */ 867 868 res = ssid_match(hapd, elems.ssid, elems.ssid_len, 869 elems.ssid_list, elems.ssid_list_len); 870 if (res == NO_SSID_MATCH) { 871 if (!(mgmt->da[0] & 0x01)) { 872 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 873 " for foreign SSID '%s' (DA " MACSTR ")%s", 874 MAC2STR(mgmt->sa), 875 wpa_ssid_txt(elems.ssid, elems.ssid_len), 876 MAC2STR(mgmt->da), 877 elems.ssid_list ? " (SSID list)" : ""); 878 } 879 return; 880 } 881 882#ifdef CONFIG_INTERWORKING 883 if (hapd->conf->interworking && 884 elems.interworking && elems.interworking_len >= 1) { 885 u8 ant = elems.interworking[0] & 0x0f; 886 if (ant != INTERWORKING_ANT_WILDCARD && 887 ant != hapd->conf->access_network_type) { 888 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 889 " for mismatching ANT %u ignored", 890 MAC2STR(mgmt->sa), ant); 891 return; 892 } 893 } 894 895 if (hapd->conf->interworking && elems.interworking && 896 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 897 const u8 *hessid; 898 if (elems.interworking_len == 7) 899 hessid = elems.interworking + 1; 900 else 901 hessid = elems.interworking + 1 + 2; 902 if (!is_broadcast_ether_addr(hessid) && 903 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 904 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 905 " for mismatching HESSID " MACSTR 906 " ignored", 907 MAC2STR(mgmt->sa), MAC2STR(hessid)); 908 return; 909 } 910 } 911#endif /* CONFIG_INTERWORKING */ 912 913#ifdef CONFIG_P2P 914 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 915 supp_rates_11b_only(&elems)) { 916 /* Indicates support for 11b rates only */ 917 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from " 918 MACSTR " with only 802.11b rates", 919 MAC2STR(mgmt->sa)); 920 return; 921 } 922#endif /* CONFIG_P2P */ 923 924 /* TODO: verify that supp_rates contains at least one matching rate 925 * with AP configuration */ 926 927 if (hapd->conf->no_probe_resp_if_seen_on && 928 is_multicast_ether_addr(mgmt->da) && 929 is_multicast_ether_addr(mgmt->bssid) && 930 sta_track_seen_on(hapd->iface, mgmt->sa, 931 hapd->conf->no_probe_resp_if_seen_on)) { 932 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 933 " since STA has been seen on %s", 934 hapd->conf->iface, MAC2STR(mgmt->sa), 935 hapd->conf->no_probe_resp_if_seen_on); 936 return; 937 } 938 939 if (hapd->conf->no_probe_resp_if_max_sta && 940 is_multicast_ether_addr(mgmt->da) && 941 is_multicast_ether_addr(mgmt->bssid) && 942 hapd->num_sta >= hapd->conf->max_num_sta && 943 !ap_get_sta(hapd, mgmt->sa)) { 944 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 945 " since no room for additional STA", 946 hapd->conf->iface, MAC2STR(mgmt->sa)); 947 return; 948 } 949 950#ifdef CONFIG_TESTING_OPTIONS 951 if (hapd->iconf->ignore_probe_probability > 0.0 && 952 drand48() < hapd->iconf->ignore_probe_probability) { 953 wpa_printf(MSG_INFO, 954 "TESTING: ignoring probe request from " MACSTR, 955 MAC2STR(mgmt->sa)); 956 return; 957 } 958#endif /* CONFIG_TESTING_OPTIONS */ 959 960 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, RX_PROBE_REQUEST "sa=" MACSTR 961 " signal=%d", MAC2STR(mgmt->sa), ssi_signal); 962 963 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL, 964 &resp_len); 965 if (resp == NULL) 966 return; 967 968 /* 969 * If this is a broadcast probe request, apply no ack policy to avoid 970 * excessive retries. 971 */ 972 noack = !!(res == WILDCARD_SSID_MATCH && 973 is_broadcast_ether_addr(mgmt->da)); 974 975 csa_offs_len = 0; 976 if (hapd->csa_in_progress) { 977 if (hapd->cs_c_off_proberesp) 978 csa_offs[csa_offs_len++] = 979 hapd->cs_c_off_proberesp; 980 981 if (hapd->cs_c_off_ecsa_proberesp) 982 csa_offs[csa_offs_len++] = 983 hapd->cs_c_off_ecsa_proberesp; 984 } 985 986 ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack, 987 csa_offs_len ? csa_offs : NULL, 988 csa_offs_len); 989 990 if (ret < 0) 991 wpa_printf(MSG_INFO, "handle_probe_req: send failed"); 992 993 os_free(resp); 994 995 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 996 "SSID", MAC2STR(mgmt->sa), 997 elems.ssid_len == 0 ? "broadcast" : "our"); 998} 999 1000 1001static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 1002 size_t *resp_len) 1003{ 1004 /* check probe response offloading caps and print warnings */ 1005 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 1006 return NULL; 1007 1008#ifdef CONFIG_WPS 1009 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 1010 (!(hapd->iface->probe_resp_offloads & 1011 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 1012 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 1013 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 1014 "Probe Response while not supporting this"); 1015#endif /* CONFIG_WPS */ 1016 1017#ifdef CONFIG_P2P 1018 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 1019 !(hapd->iface->probe_resp_offloads & 1020 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 1021 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 1022 "Probe Response while not supporting this"); 1023#endif /* CONFIG_P2P */ 1024 1025 if (hapd->conf->interworking && 1026 !(hapd->iface->probe_resp_offloads & 1027 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 1028 wpa_printf(MSG_WARNING, "Device is trying to offload " 1029 "Interworking Probe Response while not supporting " 1030 "this"); 1031 1032 /* Generate a Probe Response template for the non-P2P case */ 1033 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len); 1034} 1035 1036#endif /* NEED_AP_MLME */ 1037 1038 1039void sta_track_del(struct hostapd_sta_info *info) 1040{ 1041#ifdef CONFIG_TAXONOMY 1042 wpabuf_free(info->probe_ie_taxonomy); 1043 info->probe_ie_taxonomy = NULL; 1044#endif /* CONFIG_TAXONOMY */ 1045 os_free(info); 1046} 1047 1048 1049int ieee802_11_build_ap_params(struct hostapd_data *hapd, 1050 struct wpa_driver_ap_params *params) 1051{ 1052 struct ieee80211_mgmt *head = NULL; 1053 u8 *tail = NULL; 1054 size_t head_len = 0, tail_len = 0; 1055 u8 *resp = NULL; 1056 size_t resp_len = 0; 1057#ifdef NEED_AP_MLME 1058 u16 capab_info; 1059 u8 *pos, *tailpos, *csa_pos; 1060 1061#define BEACON_HEAD_BUF_SIZE 256 1062#define BEACON_TAIL_BUF_SIZE 512 1063 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 1064 tail_len = BEACON_TAIL_BUF_SIZE; 1065#ifdef CONFIG_WPS 1066 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 1067 tail_len += wpabuf_len(hapd->wps_beacon_ie); 1068#endif /* CONFIG_WPS */ 1069#ifdef CONFIG_P2P 1070 if (hapd->p2p_beacon_ie) 1071 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 1072#endif /* CONFIG_P2P */ 1073#ifdef CONFIG_FST 1074 if (hapd->iface->fst_ies) 1075 tail_len += wpabuf_len(hapd->iface->fst_ies); 1076#endif /* CONFIG_FST */ 1077 if (hapd->conf->vendor_elements) 1078 tail_len += wpabuf_len(hapd->conf->vendor_elements); 1079 1080#ifdef CONFIG_IEEE80211AC 1081 if (hapd->conf->vendor_vht) { 1082 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 1083 2 + sizeof(struct ieee80211_vht_operation); 1084 } 1085#endif /* CONFIG_IEEE80211AC */ 1086 1087#ifdef CONFIG_IEEE80211AX 1088 if (hapd->iconf->ieee80211ax) { 1089 tail_len += 3 + sizeof(struct ieee80211_he_capabilities) + 1090 3 + sizeof(struct ieee80211_he_operation) + 1091 3 + sizeof(struct ieee80211_he_mu_edca_parameter_set); 1092 } 1093#endif /* CONFIG_IEEE80211AX */ 1094 1095 tail_len += hostapd_mbo_ie_len(hapd); 1096 tail_len += hostapd_eid_owe_trans_len(hapd); 1097 1098 tailpos = tail = os_malloc(tail_len); 1099 if (head == NULL || tail == NULL) { 1100 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 1101 os_free(head); 1102 os_free(tail); 1103 return -1; 1104 } 1105 1106 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1107 WLAN_FC_STYPE_BEACON); 1108 head->duration = host_to_le16(0); 1109 os_memset(head->da, 0xff, ETH_ALEN); 1110 1111 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 1112 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 1113 head->u.beacon.beacon_int = 1114 host_to_le16(hapd->iconf->beacon_int); 1115 1116 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 1117 capab_info = hostapd_own_capab_info(hapd); 1118 head->u.beacon.capab_info = host_to_le16(capab_info); 1119 pos = &head->u.beacon.variable[0]; 1120 1121 /* SSID */ 1122 *pos++ = WLAN_EID_SSID; 1123 if (hapd->conf->ignore_broadcast_ssid == 2) { 1124 /* clear the data, but keep the correct length of the SSID */ 1125 *pos++ = hapd->conf->ssid.ssid_len; 1126 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 1127 pos += hapd->conf->ssid.ssid_len; 1128 } else if (hapd->conf->ignore_broadcast_ssid) { 1129 *pos++ = 0; /* empty SSID */ 1130 } else { 1131 *pos++ = hapd->conf->ssid.ssid_len; 1132 os_memcpy(pos, hapd->conf->ssid.ssid, 1133 hapd->conf->ssid.ssid_len); 1134 pos += hapd->conf->ssid.ssid_len; 1135 } 1136 1137 /* Supported rates */ 1138 pos = hostapd_eid_supp_rates(hapd, pos); 1139 1140 /* DS Params */ 1141 pos = hostapd_eid_ds_params(hapd, pos); 1142 1143 head_len = pos - (u8 *) head; 1144 1145 tailpos = hostapd_eid_country(hapd, tailpos, 1146 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1147 1148 /* Power Constraint element */ 1149 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos); 1150 1151 /* CSA IE */ 1152 csa_pos = hostapd_eid_csa(hapd, tailpos); 1153 if (csa_pos != tailpos) 1154 hapd->cs_c_off_beacon = csa_pos - tail - 1; 1155 tailpos = csa_pos; 1156 1157 /* ERP Information element */ 1158 tailpos = hostapd_eid_erp_info(hapd, tailpos); 1159 1160 /* Extended supported rates */ 1161 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 1162 1163 /* RSN, MDIE */ 1164 if (hapd->conf->wpa != WPA_PROTO_WPA) 1165 tailpos = hostapd_eid_wpa(hapd, tailpos, 1166 tail + BEACON_TAIL_BUF_SIZE - 1167 tailpos); 1168 1169 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos, 1170 tail + BEACON_TAIL_BUF_SIZE - 1171 tailpos); 1172 1173 tailpos = hostapd_eid_bss_load(hapd, tailpos, 1174 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1175 1176 /* eCSA IE */ 1177 csa_pos = hostapd_eid_ecsa(hapd, tailpos); 1178 if (csa_pos != tailpos) 1179 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1; 1180 tailpos = csa_pos; 1181 1182 tailpos = hostapd_eid_supported_op_classes(hapd, tailpos); 1183 1184#ifdef CONFIG_IEEE80211N 1185 /* Secondary Channel Offset element */ 1186 /* TODO: The standard doesn't specify a position for this element. */ 1187 tailpos = hostapd_eid_secondary_channel(hapd, tailpos); 1188 1189 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 1190 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 1191#endif /* CONFIG_IEEE80211N */ 1192 1193 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 1194 1195 /* 1196 * TODO: Time Advertisement element should only be included in some 1197 * DTIM Beacon frames. 1198 */ 1199 tailpos = hostapd_eid_time_adv(hapd, tailpos); 1200 1201 tailpos = hostapd_eid_interworking(hapd, tailpos); 1202 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 1203 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 1204 1205#ifdef CONFIG_FST 1206 if (hapd->iface->fst_ies) { 1207 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies), 1208 wpabuf_len(hapd->iface->fst_ies)); 1209 tailpos += wpabuf_len(hapd->iface->fst_ies); 1210 } 1211#endif /* CONFIG_FST */ 1212 1213#ifdef CONFIG_IEEE80211AC 1214 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 1215 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0); 1216 tailpos = hostapd_eid_vht_operation(hapd, tailpos); 1217 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos); 1218 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos); 1219 } 1220#endif /* CONFIG_IEEE80211AC */ 1221 1222 tailpos = hostapd_eid_fils_indic(hapd, tailpos, 0); 1223 1224#ifdef CONFIG_IEEE80211AX 1225 if (hapd->iconf->ieee80211ax) { 1226 tailpos = hostapd_eid_he_capab(hapd, tailpos); 1227 tailpos = hostapd_eid_he_operation(hapd, tailpos); 1228 tailpos = hostapd_eid_he_mu_edca_parameter_set(hapd, tailpos); 1229 } 1230#endif /* CONFIG_IEEE80211AX */ 1231 1232#ifdef CONFIG_IEEE80211AC 1233 if (hapd->conf->vendor_vht) 1234 tailpos = hostapd_eid_vendor_vht(hapd, tailpos); 1235#endif /* CONFIG_IEEE80211AC */ 1236 1237 /* WPA */ 1238 if (hapd->conf->wpa == WPA_PROTO_WPA) 1239 tailpos = hostapd_eid_wpa(hapd, tailpos, 1240 tail + BEACON_TAIL_BUF_SIZE - 1241 tailpos); 1242 1243 /* Wi-Fi Alliance WMM */ 1244 tailpos = hostapd_eid_wmm(hapd, tailpos); 1245 1246#ifdef CONFIG_WPS 1247 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 1248 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 1249 wpabuf_len(hapd->wps_beacon_ie)); 1250 tailpos += wpabuf_len(hapd->wps_beacon_ie); 1251 } 1252#endif /* CONFIG_WPS */ 1253 1254#ifdef CONFIG_P2P 1255 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 1256 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 1257 wpabuf_len(hapd->p2p_beacon_ie)); 1258 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 1259 } 1260#endif /* CONFIG_P2P */ 1261#ifdef CONFIG_P2P_MANAGER 1262 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 1263 P2P_MANAGE) 1264 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 1265#endif /* CONFIG_P2P_MANAGER */ 1266 1267#ifdef CONFIG_HS20 1268 tailpos = hostapd_eid_hs20_indication(hapd, tailpos); 1269 tailpos = hostapd_eid_osen(hapd, tailpos); 1270#endif /* CONFIG_HS20 */ 1271 1272 tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos); 1273 tailpos = hostapd_eid_owe_trans(hapd, tailpos, 1274 tail + tail_len - tailpos); 1275 1276 if (hapd->conf->vendor_elements) { 1277 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements), 1278 wpabuf_len(hapd->conf->vendor_elements)); 1279 tailpos += wpabuf_len(hapd->conf->vendor_elements); 1280 } 1281 1282 tail_len = tailpos > tail ? tailpos - tail : 0; 1283 1284 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 1285#endif /* NEED_AP_MLME */ 1286 1287 os_memset(params, 0, sizeof(*params)); 1288 params->head = (u8 *) head; 1289 params->head_len = head_len; 1290 params->tail = tail; 1291 params->tail_len = tail_len; 1292 params->proberesp = resp; 1293 params->proberesp_len = resp_len; 1294 params->dtim_period = hapd->conf->dtim_period; 1295 params->beacon_int = hapd->iconf->beacon_int; 1296 params->basic_rates = hapd->iface->basic_rates; 1297 params->beacon_rate = hapd->iconf->beacon_rate; 1298 params->rate_type = hapd->iconf->rate_type; 1299 params->ssid = hapd->conf->ssid.ssid; 1300 params->ssid_len = hapd->conf->ssid.ssid_len; 1301 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) == 1302 (WPA_PROTO_WPA | WPA_PROTO_RSN)) 1303 params->pairwise_ciphers = hapd->conf->wpa_pairwise | 1304 hapd->conf->rsn_pairwise; 1305 else if (hapd->conf->wpa & WPA_PROTO_RSN) 1306 params->pairwise_ciphers = hapd->conf->rsn_pairwise; 1307 else if (hapd->conf->wpa & WPA_PROTO_WPA) 1308 params->pairwise_ciphers = hapd->conf->wpa_pairwise; 1309 params->group_cipher = hapd->conf->wpa_group; 1310 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt; 1311 params->auth_algs = hapd->conf->auth_algs; 1312 params->wpa_version = hapd->conf->wpa; 1313 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 1314 (hapd->conf->ieee802_1x && 1315 (hapd->conf->default_wep_key_len || 1316 hapd->conf->individual_wep_key_len)); 1317 switch (hapd->conf->ignore_broadcast_ssid) { 1318 case 0: 1319 params->hide_ssid = NO_SSID_HIDING; 1320 break; 1321 case 1: 1322 params->hide_ssid = HIDDEN_SSID_ZERO_LEN; 1323 break; 1324 case 2: 1325 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 1326 break; 1327 } 1328 params->isolate = hapd->conf->isolate; 1329 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK; 1330#ifdef NEED_AP_MLME 1331 params->cts_protect = !!(ieee802_11_erp_info(hapd) & 1332 ERP_INFO_USE_PROTECTION); 1333 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 && 1334 hapd->iconf->preamble == SHORT_PREAMBLE; 1335 if (hapd->iface->current_mode && 1336 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1337 params->short_slot_time = 1338 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 1339 else 1340 params->short_slot_time = -1; 1341 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 1342 params->ht_opmode = -1; 1343 else 1344 params->ht_opmode = hapd->iface->ht_op_mode; 1345#endif /* NEED_AP_MLME */ 1346 params->interworking = hapd->conf->interworking; 1347 if (hapd->conf->interworking && 1348 !is_zero_ether_addr(hapd->conf->hessid)) 1349 params->hessid = hapd->conf->hessid; 1350 params->access_network_type = hapd->conf->access_network_type; 1351 params->ap_max_inactivity = hapd->conf->ap_max_inactivity; 1352#ifdef CONFIG_P2P 1353 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow; 1354#endif /* CONFIG_P2P */ 1355#ifdef CONFIG_HS20 1356 params->disable_dgaf = hapd->conf->disable_dgaf; 1357 if (hapd->conf->osen) { 1358 params->privacy = 1; 1359 params->osen = 1; 1360 } 1361#endif /* CONFIG_HS20 */ 1362 params->multicast_to_unicast = hapd->conf->multicast_to_unicast; 1363 params->pbss = hapd->conf->pbss; 1364 1365 if (hapd->conf->ftm_responder) { 1366 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_FTM_RESPONDER) { 1367 params->ftm_responder = 1; 1368 params->lci = hapd->iface->conf->lci; 1369 params->civic = hapd->iface->conf->civic; 1370 } else { 1371 wpa_printf(MSG_WARNING, 1372 "Not configuring FTM responder as the driver doesn't advertise support for it"); 1373 } 1374 } 1375 1376 return 0; 1377} 1378 1379 1380void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params) 1381{ 1382 os_free(params->tail); 1383 params->tail = NULL; 1384 os_free(params->head); 1385 params->head = NULL; 1386 os_free(params->proberesp); 1387 params->proberesp = NULL; 1388} 1389 1390 1391int ieee802_11_set_beacon(struct hostapd_data *hapd) 1392{ 1393 struct wpa_driver_ap_params params; 1394 struct hostapd_freq_params freq; 1395 struct hostapd_iface *iface = hapd->iface; 1396 struct hostapd_config *iconf = iface->conf; 1397 struct wpabuf *beacon, *proberesp, *assocresp; 1398 int res, ret = -1; 1399 1400 if (hapd->csa_in_progress) { 1401 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period"); 1402 return -1; 1403 } 1404 1405 hapd->beacon_set_done = 1; 1406 1407 if (ieee802_11_build_ap_params(hapd, ¶ms) < 0) 1408 return -1; 1409 1410 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) < 1411 0) 1412 goto fail; 1413 1414 params.beacon_ies = beacon; 1415 params.proberesp_ies = proberesp; 1416 params.assocresp_ies = assocresp; 1417 params.reenable = hapd->reenable_beacon; 1418 hapd->reenable_beacon = 0; 1419 1420 if (iface->current_mode && 1421 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq, 1422 iconf->channel, iconf->ieee80211n, 1423 iconf->ieee80211ac, 1424 iconf->secondary_channel, 1425 iconf->vht_oper_chwidth, 1426 iconf->vht_oper_centr_freq_seg0_idx, 1427 iconf->vht_oper_centr_freq_seg1_idx, 1428 iface->current_mode->vht_capab) == 0) 1429 params.freq = &freq; 1430 1431 res = hostapd_drv_set_ap(hapd, ¶ms); 1432 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 1433 if (res) 1434 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 1435 else 1436 ret = 0; 1437fail: 1438 ieee802_11_free_ap_params(¶ms); 1439 return ret; 1440} 1441 1442 1443int ieee802_11_set_beacons(struct hostapd_iface *iface) 1444{ 1445 size_t i; 1446 int ret = 0; 1447 1448 for (i = 0; i < iface->num_bss; i++) { 1449 if (iface->bss[i]->started && 1450 ieee802_11_set_beacon(iface->bss[i]) < 0) 1451 ret = -1; 1452 } 1453 1454 return ret; 1455} 1456 1457 1458/* only update beacons if started */ 1459int ieee802_11_update_beacons(struct hostapd_iface *iface) 1460{ 1461 size_t i; 1462 int ret = 0; 1463 1464 for (i = 0; i < iface->num_bss; i++) { 1465 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started && 1466 ieee802_11_set_beacon(iface->bss[i]) < 0) 1467 ret = -1; 1468 } 1469 1470 return ret; 1471} 1472 1473#endif /* CONFIG_NATIVE_WINDOWS */ 1474