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