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 "wps/wps_defs.h" 20#include "p2p/p2p.h" 21#include "hostapd.h" 22#include "ieee802_11.h" 23#include "wpa_auth.h" 24#include "wmm.h" 25#include "ap_config.h" 26#include "sta_info.h" 27#include "p2p_hostapd.h" 28#include "ap_drv_ops.h" 29#include "beacon.h" 30#include "hs20.h" 31#include "dfs.h" 32 33 34#ifdef NEED_AP_MLME 35 36static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid, 37 size_t len) 38{ 39 if (!hapd->conf->radio_measurements || len < 2 + 4) 40 return eid; 41 42 *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES; 43 *eid++ = 5; 44 *eid++ = (hapd->conf->radio_measurements & BIT(0)) ? 45 WLAN_RRM_CAPS_NEIGHBOR_REPORT : 0x00; 46 *eid++ = 0x00; 47 *eid++ = 0x00; 48 *eid++ = 0x00; 49 *eid++ = 0x00; 50 return eid; 51} 52 53 54static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len) 55{ 56 if (len < 2 + 5) 57 return eid; 58 59#ifdef CONFIG_TESTING_OPTIONS 60 if (hapd->conf->bss_load_test_set) { 61 *eid++ = WLAN_EID_BSS_LOAD; 62 *eid++ = 5; 63 os_memcpy(eid, hapd->conf->bss_load_test, 5); 64 eid += 5; 65 return eid; 66 } 67#endif /* CONFIG_TESTING_OPTIONS */ 68 if (hapd->conf->bss_load_update_period) { 69 *eid++ = WLAN_EID_BSS_LOAD; 70 *eid++ = 5; 71 WPA_PUT_LE16(eid, hapd->num_sta); 72 eid += 2; 73 *eid++ = hapd->iface->channel_utilization; 74 WPA_PUT_LE16(eid, 0); /* no available admission capabity */ 75 eid += 2; 76 } 77 return eid; 78} 79 80 81static u8 ieee802_11_erp_info(struct hostapd_data *hapd) 82{ 83 u8 erp = 0; 84 85 if (hapd->iface->current_mode == NULL || 86 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 87 return 0; 88 89 if (hapd->iface->olbc) 90 erp |= ERP_INFO_USE_PROTECTION; 91 if (hapd->iface->num_sta_non_erp > 0) { 92 erp |= ERP_INFO_NON_ERP_PRESENT | 93 ERP_INFO_USE_PROTECTION; 94 } 95 if (hapd->iface->num_sta_no_short_preamble > 0 || 96 hapd->iconf->preamble == LONG_PREAMBLE) 97 erp |= ERP_INFO_BARKER_PREAMBLE_MODE; 98 99 return erp; 100} 101 102 103static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid) 104{ 105 *eid++ = WLAN_EID_DS_PARAMS; 106 *eid++ = 1; 107 *eid++ = hapd->iconf->channel; 108 return eid; 109} 110 111 112static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid) 113{ 114 if (hapd->iface->current_mode == NULL || 115 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 116 return eid; 117 118 /* Set NonERP_present and use_protection bits if there 119 * are any associated NonERP stations. */ 120 /* TODO: use_protection bit can be set to zero even if 121 * there are NonERP stations present. This optimization 122 * might be useful if NonERP stations are "quiet". 123 * See 802.11g/D6 E-1 for recommended practice. 124 * In addition, Non ERP present might be set, if AP detects Non ERP 125 * operation on other APs. */ 126 127 /* Add ERP Information element */ 128 *eid++ = WLAN_EID_ERP_INFO; 129 *eid++ = 1; 130 *eid++ = ieee802_11_erp_info(hapd); 131 132 return eid; 133} 134 135 136static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid) 137{ 138 u8 *pos = eid; 139 u8 local_pwr_constraint = 0; 140 int dfs; 141 142 if (hapd->iface->current_mode == NULL || 143 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A) 144 return eid; 145 146 /* Let host drivers add this IE if DFS support is offloaded */ 147 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) 148 return eid; 149 150 /* 151 * There is no DFS support and power constraint was not directly 152 * requested by config option. 153 */ 154 if (!hapd->iconf->ieee80211h && 155 hapd->iconf->local_pwr_constraint == -1) 156 return eid; 157 158 /* Check if DFS is required by regulatory. */ 159 dfs = hostapd_is_dfs_required(hapd->iface); 160 if (dfs < 0) { 161 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d", 162 dfs); 163 dfs = 0; 164 } 165 166 if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1) 167 return eid; 168 169 /* 170 * ieee80211h (DFS) is enabled so Power Constraint element shall 171 * be added when running on DFS channel whenever local_pwr_constraint 172 * is configured or not. In order to meet regulations when TPC is not 173 * implemented using a transmit power that is below the legal maximum 174 * (including any mitigation factor) should help. In this case, 175 * indicate 3 dB below maximum allowed transmit power. 176 */ 177 if (hapd->iconf->local_pwr_constraint == -1) 178 local_pwr_constraint = 3; 179 180 /* 181 * A STA that is not an AP shall use a transmit power less than or 182 * equal to the local maximum transmit power level for the channel. 183 * The local maximum transmit power can be calculated from the formula: 184 * local max TX pwr = max TX pwr - local pwr constraint 185 * Where max TX pwr is maximum transmit power level specified for 186 * channel in Country element and local pwr constraint is specified 187 * for channel in this Power Constraint element. 188 */ 189 190 /* Element ID */ 191 *pos++ = WLAN_EID_PWR_CONSTRAINT; 192 /* Length */ 193 *pos++ = 1; 194 /* Local Power Constraint */ 195 if (local_pwr_constraint) 196 *pos++ = local_pwr_constraint; 197 else 198 *pos++ = hapd->iconf->local_pwr_constraint; 199 200 return pos; 201} 202 203 204static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing, 205 struct hostapd_channel_data *start, 206 struct hostapd_channel_data *prev) 207{ 208 if (end - pos < 3) 209 return pos; 210 211 /* first channel number */ 212 *pos++ = start->chan; 213 /* number of channels */ 214 *pos++ = (prev->chan - start->chan) / chan_spacing + 1; 215 /* maximum transmit power level */ 216 *pos++ = start->max_tx_power; 217 218 return pos; 219} 220 221 222static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid, 223 int max_len) 224{ 225 u8 *pos = eid; 226 u8 *end = eid + max_len; 227 int i; 228 struct hostapd_hw_modes *mode; 229 struct hostapd_channel_data *start, *prev; 230 int chan_spacing = 1; 231 232 if (!hapd->iconf->ieee80211d || max_len < 6 || 233 hapd->iface->current_mode == NULL) 234 return eid; 235 236 *pos++ = WLAN_EID_COUNTRY; 237 pos++; /* length will be set later */ 238 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */ 239 pos += 3; 240 241 mode = hapd->iface->current_mode; 242 if (mode->mode == HOSTAPD_MODE_IEEE80211A) 243 chan_spacing = 4; 244 245 start = prev = NULL; 246 for (i = 0; i < mode->num_channels; i++) { 247 struct hostapd_channel_data *chan = &mode->channels[i]; 248 if (chan->flag & HOSTAPD_CHAN_DISABLED) 249 continue; 250 if (start && prev && 251 prev->chan + chan_spacing == chan->chan && 252 start->max_tx_power == chan->max_tx_power) { 253 prev = chan; 254 continue; /* can use same entry */ 255 } 256 257 if (start && prev) { 258 pos = hostapd_eid_country_add(pos, end, chan_spacing, 259 start, prev); 260 start = NULL; 261 } 262 263 /* Start new group */ 264 start = prev = chan; 265 } 266 267 if (start) { 268 pos = hostapd_eid_country_add(pos, end, chan_spacing, 269 start, prev); 270 } 271 272 if ((pos - eid) & 1) { 273 if (end - pos < 1) 274 return eid; 275 *pos++ = 0; /* pad for 16-bit alignment */ 276 } 277 278 eid[1] = (pos - eid) - 2; 279 280 return pos; 281} 282 283 284static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len) 285{ 286 const u8 *ie; 287 size_t ielen; 288 289 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); 290 if (ie == NULL || ielen > len) 291 return eid; 292 293 os_memcpy(eid, ie, ielen); 294 return eid + ielen; 295} 296 297 298static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid) 299{ 300 u8 chan; 301 302 if (!hapd->cs_freq_params.freq) 303 return eid; 304 305 if (ieee80211_freq_to_chan(hapd->cs_freq_params.freq, &chan) == 306 NUM_HOSTAPD_MODES) 307 return eid; 308 309 *eid++ = WLAN_EID_CHANNEL_SWITCH; 310 *eid++ = 3; 311 *eid++ = hapd->cs_block_tx; 312 *eid++ = chan; 313 *eid++ = hapd->cs_count; 314 315 return eid; 316} 317 318 319static u8 * hostapd_eid_secondary_channel(struct hostapd_data *hapd, u8 *eid) 320{ 321 u8 sec_ch; 322 323 if (!hapd->cs_freq_params.sec_channel_offset) 324 return eid; 325 326 if (hapd->cs_freq_params.sec_channel_offset == -1) 327 sec_ch = HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW; 328 else if (hapd->cs_freq_params.sec_channel_offset == 1) 329 sec_ch = HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE; 330 else 331 return eid; 332 333 *eid++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; 334 *eid++ = 1; 335 *eid++ = sec_ch; 336 337 return eid; 338} 339 340 341static u8 * hostapd_add_csa_elems(struct hostapd_data *hapd, u8 *pos, 342 u8 *start, unsigned int *csa_counter_off) 343{ 344 u8 *old_pos = pos; 345 346 if (!csa_counter_off) 347 return pos; 348 349 *csa_counter_off = 0; 350 pos = hostapd_eid_csa(hapd, pos); 351 352 if (pos != old_pos) { 353 /* save an offset to the counter - should be last byte */ 354 *csa_counter_off = pos - start - 1; 355 pos = hostapd_eid_secondary_channel(hapd, pos); 356 } 357 358 return pos; 359} 360 361 362static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd, 363 const struct ieee80211_mgmt *req, 364 int is_p2p, size_t *resp_len) 365{ 366 struct ieee80211_mgmt *resp; 367 u8 *pos, *epos; 368 size_t buflen; 369 370#define MAX_PROBERESP_LEN 768 371 buflen = MAX_PROBERESP_LEN; 372#ifdef CONFIG_WPS 373 if (hapd->wps_probe_resp_ie) 374 buflen += wpabuf_len(hapd->wps_probe_resp_ie); 375#endif /* CONFIG_WPS */ 376#ifdef CONFIG_P2P 377 if (hapd->p2p_probe_resp_ie) 378 buflen += wpabuf_len(hapd->p2p_probe_resp_ie); 379#endif /* CONFIG_P2P */ 380#ifdef CONFIG_FST 381 if (hapd->iface->fst_ies) 382 buflen += wpabuf_len(hapd->iface->fst_ies); 383#endif /* CONFIG_FST */ 384 if (hapd->conf->vendor_elements) 385 buflen += wpabuf_len(hapd->conf->vendor_elements); 386 if (hapd->conf->vendor_vht) { 387 buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 388 2 + sizeof(struct ieee80211_vht_operation); 389 } 390 resp = os_zalloc(buflen); 391 if (resp == NULL) 392 return NULL; 393 394 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 395 396 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 397 WLAN_FC_STYPE_PROBE_RESP); 398 if (req) 399 os_memcpy(resp->da, req->sa, ETH_ALEN); 400 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 401 402 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 403 resp->u.probe_resp.beacon_int = 404 host_to_le16(hapd->iconf->beacon_int); 405 406 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 407 resp->u.probe_resp.capab_info = 408 host_to_le16(hostapd_own_capab_info(hapd)); 409 410 pos = resp->u.probe_resp.variable; 411 *pos++ = WLAN_EID_SSID; 412 *pos++ = hapd->conf->ssid.ssid_len; 413 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 414 pos += hapd->conf->ssid.ssid_len; 415 416 /* Supported rates */ 417 pos = hostapd_eid_supp_rates(hapd, pos); 418 419 /* DS Params */ 420 pos = hostapd_eid_ds_params(hapd, pos); 421 422 pos = hostapd_eid_country(hapd, pos, epos - pos); 423 424 /* Power Constraint element */ 425 pos = hostapd_eid_pwr_constraint(hapd, pos); 426 427 /* ERP Information element */ 428 pos = hostapd_eid_erp_info(hapd, pos); 429 430 /* Extended supported rates */ 431 pos = hostapd_eid_ext_supp_rates(hapd, pos); 432 433 /* RSN, MDIE, WPA */ 434 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 435 436 pos = hostapd_eid_bss_load(hapd, pos, epos - pos); 437 438 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos); 439 440#ifdef CONFIG_IEEE80211N 441 pos = hostapd_eid_ht_capabilities(hapd, pos); 442 pos = hostapd_eid_ht_operation(hapd, pos); 443#endif /* CONFIG_IEEE80211N */ 444 445 pos = hostapd_eid_ext_capab(hapd, pos); 446 447 pos = hostapd_eid_time_adv(hapd, pos); 448 pos = hostapd_eid_time_zone(hapd, pos); 449 450 pos = hostapd_eid_interworking(hapd, pos); 451 pos = hostapd_eid_adv_proto(hapd, pos); 452 pos = hostapd_eid_roaming_consortium(hapd, pos); 453 454 pos = hostapd_add_csa_elems(hapd, pos, (u8 *)resp, 455 &hapd->cs_c_off_proberesp); 456 457#ifdef CONFIG_FST 458 if (hapd->iface->fst_ies) { 459 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies), 460 wpabuf_len(hapd->iface->fst_ies)); 461 pos += wpabuf_len(hapd->iface->fst_ies); 462 } 463#endif /* CONFIG_FST */ 464 465#ifdef CONFIG_IEEE80211AC 466 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 467 pos = hostapd_eid_vht_capabilities(hapd, pos); 468 pos = hostapd_eid_vht_operation(hapd, pos); 469 } 470 if (hapd->conf->vendor_vht) 471 pos = hostapd_eid_vendor_vht(hapd, pos); 472#endif /* CONFIG_IEEE80211AC */ 473 474 /* Wi-Fi Alliance WMM */ 475 pos = hostapd_eid_wmm(hapd, pos); 476 477#ifdef CONFIG_WPS 478 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 479 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 480 wpabuf_len(hapd->wps_probe_resp_ie)); 481 pos += wpabuf_len(hapd->wps_probe_resp_ie); 482 } 483#endif /* CONFIG_WPS */ 484 485#ifdef CONFIG_P2P 486 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 487 hapd->p2p_probe_resp_ie) { 488 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 489 wpabuf_len(hapd->p2p_probe_resp_ie)); 490 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 491 } 492#endif /* CONFIG_P2P */ 493#ifdef CONFIG_P2P_MANAGER 494 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 495 P2P_MANAGE) 496 pos = hostapd_eid_p2p_manage(hapd, pos); 497#endif /* CONFIG_P2P_MANAGER */ 498 499#ifdef CONFIG_HS20 500 pos = hostapd_eid_hs20_indication(hapd, pos); 501 pos = hostapd_eid_osen(hapd, pos); 502#endif /* CONFIG_HS20 */ 503 504 if (hapd->conf->vendor_elements) { 505 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements), 506 wpabuf_len(hapd->conf->vendor_elements)); 507 pos += wpabuf_len(hapd->conf->vendor_elements); 508 } 509 510 *resp_len = pos - (u8 *) resp; 511 return (u8 *) resp; 512} 513 514 515enum ssid_match_result { 516 NO_SSID_MATCH, 517 EXACT_SSID_MATCH, 518 WILDCARD_SSID_MATCH 519}; 520 521static enum ssid_match_result ssid_match(struct hostapd_data *hapd, 522 const u8 *ssid, size_t ssid_len, 523 const u8 *ssid_list, 524 size_t ssid_list_len) 525{ 526 const u8 *pos, *end; 527 int wildcard = 0; 528 529 if (ssid_len == 0) 530 wildcard = 1; 531 if (ssid_len == hapd->conf->ssid.ssid_len && 532 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0) 533 return EXACT_SSID_MATCH; 534 535 if (ssid_list == NULL) 536 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 537 538 pos = ssid_list; 539 end = ssid_list + ssid_list_len; 540 while (pos + 1 <= end) { 541 if (pos + 2 + pos[1] > end) 542 break; 543 if (pos[1] == 0) 544 wildcard = 1; 545 if (pos[1] == hapd->conf->ssid.ssid_len && 546 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0) 547 return EXACT_SSID_MATCH; 548 pos += 2 + pos[1]; 549 } 550 551 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 552} 553 554 555void sta_track_expire(struct hostapd_iface *iface, int force) 556{ 557 struct os_reltime now; 558 struct hostapd_sta_info *info; 559 560 if (!iface->num_sta_seen) 561 return; 562 563 os_get_reltime(&now); 564 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info, 565 list))) { 566 if (!force && 567 !os_reltime_expired(&now, &info->last_seen, 568 iface->conf->track_sta_max_age)) 569 break; 570 force = 0; 571 572 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for " 573 MACSTR, iface->bss[0]->conf->iface, 574 MAC2STR(info->addr)); 575 dl_list_del(&info->list); 576 iface->num_sta_seen--; 577 os_free(info); 578 } 579} 580 581 582static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface, 583 const u8 *addr) 584{ 585 struct hostapd_sta_info *info; 586 587 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list) 588 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0) 589 return info; 590 591 return NULL; 592} 593 594 595void sta_track_add(struct hostapd_iface *iface, const u8 *addr) 596{ 597 struct hostapd_sta_info *info; 598 599 info = sta_track_get(iface, addr); 600 if (info) { 601 /* Move the most recent entry to the end of the list */ 602 dl_list_del(&info->list); 603 dl_list_add_tail(&iface->sta_seen, &info->list); 604 os_get_reltime(&info->last_seen); 605 return; 606 } 607 608 /* Add a new entry */ 609 info = os_zalloc(sizeof(*info)); 610 os_memcpy(info->addr, addr, ETH_ALEN); 611 os_get_reltime(&info->last_seen); 612 613 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) { 614 /* Expire oldest entry to make room for a new one */ 615 sta_track_expire(iface, 1); 616 } 617 618 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for " 619 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr)); 620 dl_list_add_tail(&iface->sta_seen, &info->list); 621 iface->num_sta_seen++; 622} 623 624 625struct hostapd_data * 626sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr, 627 const char *ifname) 628{ 629 struct hapd_interfaces *interfaces = iface->interfaces; 630 size_t i, j; 631 632 for (i = 0; i < interfaces->count; i++) { 633 struct hostapd_data *hapd = NULL; 634 635 iface = interfaces->iface[i]; 636 for (j = 0; j < iface->num_bss; j++) { 637 hapd = iface->bss[j]; 638 if (os_strcmp(ifname, hapd->conf->iface) == 0) 639 break; 640 hapd = NULL; 641 } 642 643 if (hapd && sta_track_get(iface, addr)) 644 return hapd; 645 } 646 647 return NULL; 648} 649 650 651void handle_probe_req(struct hostapd_data *hapd, 652 const struct ieee80211_mgmt *mgmt, size_t len, 653 int ssi_signal) 654{ 655 u8 *resp; 656 struct ieee802_11_elems elems; 657 const u8 *ie; 658 size_t ie_len; 659 size_t i, resp_len; 660 int noack; 661 enum ssid_match_result res; 662 663 ie = mgmt->u.probe_req.variable; 664 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req)) 665 return; 666 if (hapd->iconf->track_sta_max_num) 667 sta_track_add(hapd->iface, mgmt->sa); 668 ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req)); 669 670 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 671 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 672 mgmt->sa, mgmt->da, mgmt->bssid, 673 ie, ie_len, ssi_signal) > 0) 674 return; 675 676 if (!hapd->iconf->send_probe_response) 677 return; 678 679 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 680 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 681 MAC2STR(mgmt->sa)); 682 return; 683 } 684 685 if ((!elems.ssid || !elems.supp_rates)) { 686 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 687 "without SSID or supported rates element", 688 MAC2STR(mgmt->sa)); 689 return; 690 } 691 692 /* 693 * No need to reply if the Probe Request frame was sent on an adjacent 694 * channel. IEEE Std 802.11-2012 describes this as a requirement for an 695 * AP with dot11RadioMeasurementActivated set to true, but strictly 696 * speaking does not allow such ignoring of Probe Request frames if 697 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce 698 * number of unnecessary Probe Response frames for cases where the STA 699 * is less likely to see them (Probe Request frame sent on a 700 * neighboring, but partially overlapping, channel). 701 */ 702 if (elems.ds_params && 703 hapd->iface->current_mode && 704 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G || 705 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) && 706 hapd->iconf->channel != elems.ds_params[0]) { 707 wpa_printf(MSG_DEBUG, 708 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u", 709 hapd->iconf->channel, elems.ds_params[0]); 710 return; 711 } 712 713#ifdef CONFIG_P2P 714 if (hapd->p2p && elems.wps_ie) { 715 struct wpabuf *wps; 716 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 717 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 718 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 719 "due to mismatch with Requested Device " 720 "Type"); 721 wpabuf_free(wps); 722 return; 723 } 724 wpabuf_free(wps); 725 } 726 727 if (hapd->p2p && elems.p2p) { 728 struct wpabuf *p2p; 729 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 730 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 731 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 732 "due to mismatch with Device ID"); 733 wpabuf_free(p2p); 734 return; 735 } 736 wpabuf_free(p2p); 737 } 738#endif /* CONFIG_P2P */ 739 740 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 && 741 elems.ssid_list_len == 0) { 742 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 743 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 744 return; 745 } 746 747#ifdef CONFIG_P2P 748 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 749 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 750 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 751 P2P_WILDCARD_SSID_LEN) == 0) { 752 /* Process P2P Wildcard SSID like Wildcard SSID */ 753 elems.ssid_len = 0; 754 } 755#endif /* CONFIG_P2P */ 756 757 res = ssid_match(hapd, elems.ssid, elems.ssid_len, 758 elems.ssid_list, elems.ssid_list_len); 759 if (res == NO_SSID_MATCH) { 760 if (!(mgmt->da[0] & 0x01)) { 761 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 762 " for foreign SSID '%s' (DA " MACSTR ")%s", 763 MAC2STR(mgmt->sa), 764 wpa_ssid_txt(elems.ssid, elems.ssid_len), 765 MAC2STR(mgmt->da), 766 elems.ssid_list ? " (SSID list)" : ""); 767 } 768 return; 769 } 770 771#ifdef CONFIG_INTERWORKING 772 if (hapd->conf->interworking && 773 elems.interworking && elems.interworking_len >= 1) { 774 u8 ant = elems.interworking[0] & 0x0f; 775 if (ant != INTERWORKING_ANT_WILDCARD && 776 ant != hapd->conf->access_network_type) { 777 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 778 " for mismatching ANT %u ignored", 779 MAC2STR(mgmt->sa), ant); 780 return; 781 } 782 } 783 784 if (hapd->conf->interworking && elems.interworking && 785 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 786 const u8 *hessid; 787 if (elems.interworking_len == 7) 788 hessid = elems.interworking + 1; 789 else 790 hessid = elems.interworking + 1 + 2; 791 if (!is_broadcast_ether_addr(hessid) && 792 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 793 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 794 " for mismatching HESSID " MACSTR 795 " ignored", 796 MAC2STR(mgmt->sa), MAC2STR(hessid)); 797 return; 798 } 799 } 800#endif /* CONFIG_INTERWORKING */ 801 802#ifdef CONFIG_P2P 803 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 804 supp_rates_11b_only(&elems)) { 805 /* Indicates support for 11b rates only */ 806 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from " 807 MACSTR " with only 802.11b rates", 808 MAC2STR(mgmt->sa)); 809 return; 810 } 811#endif /* CONFIG_P2P */ 812 813 /* TODO: verify that supp_rates contains at least one matching rate 814 * with AP configuration */ 815 816 if (hapd->conf->no_probe_resp_if_seen_on && 817 is_multicast_ether_addr(mgmt->da) && 818 is_multicast_ether_addr(mgmt->bssid) && 819 sta_track_seen_on(hapd->iface, mgmt->sa, 820 hapd->conf->no_probe_resp_if_seen_on)) { 821 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 822 " since STA has been seen on %s", 823 hapd->conf->iface, MAC2STR(mgmt->sa), 824 hapd->conf->no_probe_resp_if_seen_on); 825 return; 826 } 827 828#ifdef CONFIG_TESTING_OPTIONS 829 if (hapd->iconf->ignore_probe_probability > 0.0 && 830 drand48() < hapd->iconf->ignore_probe_probability) { 831 wpa_printf(MSG_INFO, 832 "TESTING: ignoring probe request from " MACSTR, 833 MAC2STR(mgmt->sa)); 834 return; 835 } 836#endif /* CONFIG_TESTING_OPTIONS */ 837 838 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL, 839 &resp_len); 840 if (resp == NULL) 841 return; 842 843 /* 844 * If this is a broadcast probe request, apply no ack policy to avoid 845 * excessive retries. 846 */ 847 noack = !!(res == WILDCARD_SSID_MATCH && 848 is_broadcast_ether_addr(mgmt->da)); 849 850 if (hostapd_drv_send_mlme(hapd, resp, resp_len, noack) < 0) 851 wpa_printf(MSG_INFO, "handle_probe_req: send failed"); 852 853 os_free(resp); 854 855 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 856 "SSID", MAC2STR(mgmt->sa), 857 elems.ssid_len == 0 ? "broadcast" : "our"); 858} 859 860 861static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 862 size_t *resp_len) 863{ 864 /* check probe response offloading caps and print warnings */ 865 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 866 return NULL; 867 868#ifdef CONFIG_WPS 869 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 870 (!(hapd->iface->probe_resp_offloads & 871 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 872 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 873 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 874 "Probe Response while not supporting this"); 875#endif /* CONFIG_WPS */ 876 877#ifdef CONFIG_P2P 878 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 879 !(hapd->iface->probe_resp_offloads & 880 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 881 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 882 "Probe Response while not supporting this"); 883#endif /* CONFIG_P2P */ 884 885 if (hapd->conf->interworking && 886 !(hapd->iface->probe_resp_offloads & 887 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 888 wpa_printf(MSG_WARNING, "Device is trying to offload " 889 "Interworking Probe Response while not supporting " 890 "this"); 891 892 /* Generate a Probe Response template for the non-P2P case */ 893 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len); 894} 895 896#endif /* NEED_AP_MLME */ 897 898 899int ieee802_11_build_ap_params(struct hostapd_data *hapd, 900 struct wpa_driver_ap_params *params) 901{ 902 struct ieee80211_mgmt *head = NULL; 903 u8 *tail = NULL; 904 size_t head_len = 0, tail_len = 0; 905 u8 *resp = NULL; 906 size_t resp_len = 0; 907#ifdef NEED_AP_MLME 908 u16 capab_info; 909 u8 *pos, *tailpos; 910 911#define BEACON_HEAD_BUF_SIZE 256 912#define BEACON_TAIL_BUF_SIZE 512 913 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 914 tail_len = BEACON_TAIL_BUF_SIZE; 915#ifdef CONFIG_WPS 916 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 917 tail_len += wpabuf_len(hapd->wps_beacon_ie); 918#endif /* CONFIG_WPS */ 919#ifdef CONFIG_P2P 920 if (hapd->p2p_beacon_ie) 921 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 922#endif /* CONFIG_P2P */ 923#ifdef CONFIG_FST 924 if (hapd->iface->fst_ies) 925 tail_len += wpabuf_len(hapd->iface->fst_ies); 926#endif /* CONFIG_FST */ 927 if (hapd->conf->vendor_elements) 928 tail_len += wpabuf_len(hapd->conf->vendor_elements); 929 930#ifdef CONFIG_IEEE80211AC 931 if (hapd->conf->vendor_vht) { 932 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 933 2 + sizeof(struct ieee80211_vht_operation); 934 } 935#endif /* CONFIG_IEEE80211AC */ 936 937 tailpos = tail = os_malloc(tail_len); 938 if (head == NULL || tail == NULL) { 939 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 940 os_free(head); 941 os_free(tail); 942 return -1; 943 } 944 945 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 946 WLAN_FC_STYPE_BEACON); 947 head->duration = host_to_le16(0); 948 os_memset(head->da, 0xff, ETH_ALEN); 949 950 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 951 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 952 head->u.beacon.beacon_int = 953 host_to_le16(hapd->iconf->beacon_int); 954 955 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 956 capab_info = hostapd_own_capab_info(hapd); 957 head->u.beacon.capab_info = host_to_le16(capab_info); 958 pos = &head->u.beacon.variable[0]; 959 960 /* SSID */ 961 *pos++ = WLAN_EID_SSID; 962 if (hapd->conf->ignore_broadcast_ssid == 2) { 963 /* clear the data, but keep the correct length of the SSID */ 964 *pos++ = hapd->conf->ssid.ssid_len; 965 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 966 pos += hapd->conf->ssid.ssid_len; 967 } else if (hapd->conf->ignore_broadcast_ssid) { 968 *pos++ = 0; /* empty SSID */ 969 } else { 970 *pos++ = hapd->conf->ssid.ssid_len; 971 os_memcpy(pos, hapd->conf->ssid.ssid, 972 hapd->conf->ssid.ssid_len); 973 pos += hapd->conf->ssid.ssid_len; 974 } 975 976 /* Supported rates */ 977 pos = hostapd_eid_supp_rates(hapd, pos); 978 979 /* DS Params */ 980 pos = hostapd_eid_ds_params(hapd, pos); 981 982 head_len = pos - (u8 *) head; 983 984 tailpos = hostapd_eid_country(hapd, tailpos, 985 tail + BEACON_TAIL_BUF_SIZE - tailpos); 986 987 /* Power Constraint element */ 988 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos); 989 990 /* ERP Information element */ 991 tailpos = hostapd_eid_erp_info(hapd, tailpos); 992 993 /* Extended supported rates */ 994 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 995 996 /* RSN, MDIE, WPA */ 997 tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE - 998 tailpos); 999 1000 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos, 1001 tail + BEACON_TAIL_BUF_SIZE - 1002 tailpos); 1003 1004 tailpos = hostapd_eid_bss_load(hapd, tailpos, 1005 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1006 1007#ifdef CONFIG_IEEE80211N 1008 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 1009 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 1010#endif /* CONFIG_IEEE80211N */ 1011 1012 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 1013 1014 /* 1015 * TODO: Time Advertisement element should only be included in some 1016 * DTIM Beacon frames. 1017 */ 1018 tailpos = hostapd_eid_time_adv(hapd, tailpos); 1019 1020 tailpos = hostapd_eid_interworking(hapd, tailpos); 1021 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 1022 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 1023 tailpos = hostapd_add_csa_elems(hapd, tailpos, tail, 1024 &hapd->cs_c_off_beacon); 1025 1026#ifdef CONFIG_FST 1027 if (hapd->iface->fst_ies) { 1028 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies), 1029 wpabuf_len(hapd->iface->fst_ies)); 1030 tailpos += wpabuf_len(hapd->iface->fst_ies); 1031 } 1032#endif /* CONFIG_FST */ 1033 1034#ifdef CONFIG_IEEE80211AC 1035 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 1036 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos); 1037 tailpos = hostapd_eid_vht_operation(hapd, tailpos); 1038 } 1039 if (hapd->conf->vendor_vht) 1040 tailpos = hostapd_eid_vendor_vht(hapd, tailpos); 1041#endif /* CONFIG_IEEE80211AC */ 1042 1043 /* Wi-Fi Alliance WMM */ 1044 tailpos = hostapd_eid_wmm(hapd, tailpos); 1045 1046#ifdef CONFIG_WPS 1047 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 1048 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 1049 wpabuf_len(hapd->wps_beacon_ie)); 1050 tailpos += wpabuf_len(hapd->wps_beacon_ie); 1051 } 1052#endif /* CONFIG_WPS */ 1053 1054#ifdef CONFIG_P2P 1055 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 1056 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 1057 wpabuf_len(hapd->p2p_beacon_ie)); 1058 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 1059 } 1060#endif /* CONFIG_P2P */ 1061#ifdef CONFIG_P2P_MANAGER 1062 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 1063 P2P_MANAGE) 1064 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 1065#endif /* CONFIG_P2P_MANAGER */ 1066 1067#ifdef CONFIG_HS20 1068 tailpos = hostapd_eid_hs20_indication(hapd, tailpos); 1069 tailpos = hostapd_eid_osen(hapd, tailpos); 1070#endif /* CONFIG_HS20 */ 1071 1072 if (hapd->conf->vendor_elements) { 1073 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements), 1074 wpabuf_len(hapd->conf->vendor_elements)); 1075 tailpos += wpabuf_len(hapd->conf->vendor_elements); 1076 } 1077 1078 tail_len = tailpos > tail ? tailpos - tail : 0; 1079 1080 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 1081#endif /* NEED_AP_MLME */ 1082 1083 os_memset(params, 0, sizeof(*params)); 1084 params->head = (u8 *) head; 1085 params->head_len = head_len; 1086 params->tail = tail; 1087 params->tail_len = tail_len; 1088 params->proberesp = resp; 1089 params->proberesp_len = resp_len; 1090 params->dtim_period = hapd->conf->dtim_period; 1091 params->beacon_int = hapd->iconf->beacon_int; 1092 params->basic_rates = hapd->iface->basic_rates; 1093 params->ssid = hapd->conf->ssid.ssid; 1094 params->ssid_len = hapd->conf->ssid.ssid_len; 1095 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) == 1096 (WPA_PROTO_WPA | WPA_PROTO_RSN)) 1097 params->pairwise_ciphers = hapd->conf->wpa_pairwise | 1098 hapd->conf->rsn_pairwise; 1099 else if (hapd->conf->wpa & WPA_PROTO_RSN) 1100 params->pairwise_ciphers = hapd->conf->rsn_pairwise; 1101 else if (hapd->conf->wpa & WPA_PROTO_WPA) 1102 params->pairwise_ciphers = hapd->conf->wpa_pairwise; 1103 params->group_cipher = hapd->conf->wpa_group; 1104 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt; 1105 params->auth_algs = hapd->conf->auth_algs; 1106 params->wpa_version = hapd->conf->wpa; 1107 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 1108 (hapd->conf->ieee802_1x && 1109 (hapd->conf->default_wep_key_len || 1110 hapd->conf->individual_wep_key_len)); 1111 switch (hapd->conf->ignore_broadcast_ssid) { 1112 case 0: 1113 params->hide_ssid = NO_SSID_HIDING; 1114 break; 1115 case 1: 1116 params->hide_ssid = HIDDEN_SSID_ZERO_LEN; 1117 break; 1118 case 2: 1119 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 1120 break; 1121 } 1122 params->isolate = hapd->conf->isolate; 1123 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK; 1124#ifdef NEED_AP_MLME 1125 params->cts_protect = !!(ieee802_11_erp_info(hapd) & 1126 ERP_INFO_USE_PROTECTION); 1127 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 && 1128 hapd->iconf->preamble == SHORT_PREAMBLE; 1129 if (hapd->iface->current_mode && 1130 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1131 params->short_slot_time = 1132 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 1133 else 1134 params->short_slot_time = -1; 1135 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 1136 params->ht_opmode = -1; 1137 else 1138 params->ht_opmode = hapd->iface->ht_op_mode; 1139#endif /* NEED_AP_MLME */ 1140 params->interworking = hapd->conf->interworking; 1141 if (hapd->conf->interworking && 1142 !is_zero_ether_addr(hapd->conf->hessid)) 1143 params->hessid = hapd->conf->hessid; 1144 params->access_network_type = hapd->conf->access_network_type; 1145 params->ap_max_inactivity = hapd->conf->ap_max_inactivity; 1146#ifdef CONFIG_P2P 1147 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow; 1148#endif /* CONFIG_P2P */ 1149#ifdef CONFIG_HS20 1150 params->disable_dgaf = hapd->conf->disable_dgaf; 1151 if (hapd->conf->osen) { 1152 params->privacy = 1; 1153 params->osen = 1; 1154 } 1155#endif /* CONFIG_HS20 */ 1156 return 0; 1157} 1158 1159 1160void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params) 1161{ 1162 os_free(params->tail); 1163 params->tail = NULL; 1164 os_free(params->head); 1165 params->head = NULL; 1166 os_free(params->proberesp); 1167 params->proberesp = NULL; 1168} 1169 1170 1171int ieee802_11_set_beacon(struct hostapd_data *hapd) 1172{ 1173 struct wpa_driver_ap_params params; 1174 struct hostapd_freq_params freq; 1175 struct hostapd_iface *iface = hapd->iface; 1176 struct hostapd_config *iconf = iface->conf; 1177 struct wpabuf *beacon, *proberesp, *assocresp; 1178 int res, ret = -1; 1179 1180 if (hapd->csa_in_progress) { 1181 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period"); 1182 return -1; 1183 } 1184 1185 hapd->beacon_set_done = 1; 1186 1187 if (ieee802_11_build_ap_params(hapd, ¶ms) < 0) 1188 return -1; 1189 1190 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) < 1191 0) 1192 goto fail; 1193 1194 params.beacon_ies = beacon; 1195 params.proberesp_ies = proberesp; 1196 params.assocresp_ies = assocresp; 1197 params.reenable = hapd->reenable_beacon; 1198 hapd->reenable_beacon = 0; 1199 1200 if (iface->current_mode && 1201 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq, 1202 iconf->channel, iconf->ieee80211n, 1203 iconf->ieee80211ac, 1204 iconf->secondary_channel, 1205 iconf->vht_oper_chwidth, 1206 iconf->vht_oper_centr_freq_seg0_idx, 1207 iconf->vht_oper_centr_freq_seg1_idx, 1208 iface->current_mode->vht_capab) == 0) 1209 params.freq = &freq; 1210 1211 res = hostapd_drv_set_ap(hapd, ¶ms); 1212 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 1213 if (res) 1214 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 1215 else 1216 ret = 0; 1217fail: 1218 ieee802_11_free_ap_params(¶ms); 1219 return ret; 1220} 1221 1222 1223int ieee802_11_set_beacons(struct hostapd_iface *iface) 1224{ 1225 size_t i; 1226 int ret = 0; 1227 1228 for (i = 0; i < iface->num_bss; i++) { 1229 if (iface->bss[i]->started && 1230 ieee802_11_set_beacon(iface->bss[i]) < 0) 1231 ret = -1; 1232 } 1233 1234 return ret; 1235} 1236 1237 1238/* only update beacons if started */ 1239int ieee802_11_update_beacons(struct hostapd_iface *iface) 1240{ 1241 size_t i; 1242 int ret = 0; 1243 1244 for (i = 0; i < iface->num_bss; i++) { 1245 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started && 1246 ieee802_11_set_beacon(iface->bss[i]) < 0) 1247 ret = -1; 1248 } 1249 1250 return ret; 1251} 1252 1253#endif /* CONFIG_NATIVE_WINDOWS */ 1254