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 (at) 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 #ifdef CONFIG_IEEE80211AX 396 if (hapd->iconf->ieee80211ax) { 397 buflen += 4 + sizeof (struct ieee80211_he_capabilities) + 398 4 + sizeof (struct ieee80211_he_operation); 399 } 400 #endif 401 402 buflen += hostapd_mbo_ie_len(hapd); 403 404 resp = os_zalloc(buflen); 405 if (resp == NULL) 406 return NULL; 407 408 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 409 410 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 411 WLAN_FC_STYPE_PROBE_RESP); 412 if (req) 413 os_memcpy(resp->da, req->sa, ETH_ALEN); 414 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 415 416 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 417 resp->u.probe_resp.beacon_int = 418 host_to_le16(hapd->iconf->beacon_int); 419 420 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 421 resp->u.probe_resp.capab_info = 422 host_to_le16(hostapd_own_capab_info(hapd)); 423 424 pos = resp->u.probe_resp.variable; 425 *pos++ = WLAN_EID_SSID; 426 *pos++ = hapd->conf->ssid.ssid_len; 427 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 428 pos += hapd->conf->ssid.ssid_len; 429 430 /* Supported rates */ 431 pos = hostapd_eid_supp_rates(hapd, pos); 432 433 /* DS Params */ 434 pos = hostapd_eid_ds_params(hapd, pos); 435 436 pos = hostapd_eid_country(hapd, pos, epos - pos); 437 438 /* Power Constraint element */ 439 pos = hostapd_eid_pwr_constraint(hapd, pos); 440 441 /* CSA IE */ 442 csa_pos = hostapd_eid_csa(hapd, pos); 443 if (csa_pos != pos) 444 hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1; 445 pos = csa_pos; 446 447 /* ERP Information element */ 448 pos = hostapd_eid_erp_info(hapd, pos); 449 450 /* Extended supported rates */ 451 pos = hostapd_eid_ext_supp_rates(hapd, pos); 452 453 /* RSN, MDIE, WPA */ 454 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 455 456 pos = hostapd_eid_bss_load(hapd, pos, epos - pos); 457 458 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos); 459 460 /* eCSA IE */ 461 csa_pos = hostapd_eid_ecsa(hapd, pos); 462 if (csa_pos != pos) 463 hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1; 464 pos = csa_pos; 465 466 pos = hostapd_eid_supported_op_classes(hapd, pos); 467 468 #ifdef CONFIG_IEEE80211N 469 /* Secondary Channel Offset element */ 470 /* TODO: The standard doesn't specify a position for this element. */ 471 pos = hostapd_eid_secondary_channel(hapd, pos); 472 473 pos = hostapd_eid_ht_capabilities(hapd, pos); 474 pos = hostapd_eid_ht_operation(hapd, pos); 475 #endif /* CONFIG_IEEE80211N */ 476 477 pos = hostapd_eid_ext_capab(hapd, pos); 478 479 pos = hostapd_eid_time_adv(hapd, pos); 480 pos = hostapd_eid_time_zone(hapd, pos); 481 482 pos = hostapd_eid_interworking(hapd, pos); 483 pos = hostapd_eid_adv_proto(hapd, pos); 484 pos = hostapd_eid_roaming_consortium(hapd, pos); 485 486 #ifdef CONFIG_FST 487 if (hapd->iface->fst_ies) { 488 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies), 489 wpabuf_len(hapd->iface->fst_ies)); 490 pos += wpabuf_len(hapd->iface->fst_ies); 491 } 492 #endif /* CONFIG_FST */ 493 494 #ifdef CONFIG_IEEE80211AC 495 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 496 pos = hostapd_eid_vht_capabilities(hapd, pos, 0); 497 pos = hostapd_eid_vht_operation(hapd, pos); 498 pos = hostapd_eid_txpower_envelope(hapd, pos); 499 pos = hostapd_eid_wb_chsw_wrapper(hapd, pos); 500 } 501 #endif /* CONFIG_IEEE80211AC */ 502 503 pos = hostapd_eid_fils_indic(hapd, pos, 0); 504 505 #ifdef CONFIG_IEEE80211AC 506 if (hapd->conf->vendor_vht) 507 pos = hostapd_eid_vendor_vht(hapd, pos); 508 #endif /* CONFIG_IEEE80211AC */ 509 510 #ifdef CONFIG_IEEE80211AX 511 if (hapd->iconf->ieee80211ax) { 512 pos = hostapd_eid_vendor_he_capab(hapd, pos); 513 pos = hostapd_eid_vendor_he_operation(hapd, pos); 514 } 515 #endif /* CONFIG_IEEE80211AX */ 516 517 /* Wi-Fi Alliance WMM */ 518 pos = hostapd_eid_wmm(hapd, pos); 519 520 #ifdef CONFIG_WPS 521 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 522 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 523 wpabuf_len(hapd->wps_probe_resp_ie)); 524 pos += wpabuf_len(hapd->wps_probe_resp_ie); 525 } 526 #endif /* CONFIG_WPS */ 527 528 #ifdef CONFIG_P2P 529 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 530 hapd->p2p_probe_resp_ie) { 531 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 532 wpabuf_len(hapd->p2p_probe_resp_ie)); 533 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 534 } 535 #endif /* CONFIG_P2P */ 536 #ifdef CONFIG_P2P_MANAGER 537 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 538 P2P_MANAGE) 539 pos = hostapd_eid_p2p_manage(hapd, pos); 540 #endif /* CONFIG_P2P_MANAGER */ 541 542 #ifdef CONFIG_HS20 543 pos = hostapd_eid_hs20_indication(hapd, pos); 544 pos = hostapd_eid_osen(hapd, pos); 545 #endif /* CONFIG_HS20 */ 546 547 pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos); 548 549 if (hapd->conf->vendor_elements) { 550 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements), 551 wpabuf_len(hapd->conf->vendor_elements)); 552 pos += wpabuf_len(hapd->conf->vendor_elements); 553 } 554 555 *resp_len = pos - (u8 *) resp; 556 return (u8 *) resp; 557 } 558 559 560 enum ssid_match_result { 561 NO_SSID_MATCH, 562 EXACT_SSID_MATCH, 563 WILDCARD_SSID_MATCH 564 }; 565 566 static enum ssid_match_result ssid_match(struct hostapd_data *hapd, 567 const u8 *ssid, size_t ssid_len, 568 const u8 *ssid_list, 569 size_t ssid_list_len) 570 { 571 const u8 *pos, *end; 572 int wildcard = 0; 573 574 if (ssid_len == 0) 575 wildcard = 1; 576 if (ssid_len == hapd->conf->ssid.ssid_len && 577 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0) 578 return EXACT_SSID_MATCH; 579 580 if (ssid_list == NULL) 581 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 582 583 pos = ssid_list; 584 end = ssid_list + ssid_list_len; 585 while (end - pos >= 1) { 586 if (2 + pos[1] > end - pos) 587 break; 588 if (pos[1] == 0) 589 wildcard = 1; 590 if (pos[1] == hapd->conf->ssid.ssid_len && 591 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0) 592 return EXACT_SSID_MATCH; 593 pos += 2 + pos[1]; 594 } 595 596 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH; 597 } 598 599 600 void sta_track_expire(struct hostapd_iface *iface, int force) 601 { 602 struct os_reltime now; 603 struct hostapd_sta_info *info; 604 605 if (!iface->num_sta_seen) 606 return; 607 608 os_get_reltime(&now); 609 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info, 610 list))) { 611 if (!force && 612 !os_reltime_expired(&now, &info->last_seen, 613 iface->conf->track_sta_max_age)) 614 break; 615 force = 0; 616 617 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for " 618 MACSTR, iface->bss[0]->conf->iface, 619 MAC2STR(info->addr)); 620 dl_list_del(&info->list); 621 iface->num_sta_seen--; 622 sta_track_del(info); 623 } 624 } 625 626 627 static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface, 628 const u8 *addr) 629 { 630 struct hostapd_sta_info *info; 631 632 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list) 633 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0) 634 return info; 635 636 return NULL; 637 } 638 639 640 void sta_track_add(struct hostapd_iface *iface, const u8 *addr, int ssi_signal) 641 { 642 struct hostapd_sta_info *info; 643 644 info = sta_track_get(iface, addr); 645 if (info) { 646 /* Move the most recent entry to the end of the list */ 647 dl_list_del(&info->list); 648 dl_list_add_tail(&iface->sta_seen, &info->list); 649 os_get_reltime(&info->last_seen); 650 info->ssi_signal = ssi_signal; 651 return; 652 } 653 654 /* Add a new entry */ 655 info = os_zalloc(sizeof(*info)); 656 if (info == NULL) 657 return; 658 os_memcpy(info->addr, addr, ETH_ALEN); 659 os_get_reltime(&info->last_seen); 660 info->ssi_signal = ssi_signal; 661 662 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) { 663 /* Expire oldest entry to make room for a new one */ 664 sta_track_expire(iface, 1); 665 } 666 667 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for " 668 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr)); 669 dl_list_add_tail(&iface->sta_seen, &info->list); 670 iface->num_sta_seen++; 671 } 672 673 674 struct hostapd_data * 675 sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr, 676 const char *ifname) 677 { 678 struct hapd_interfaces *interfaces = iface->interfaces; 679 size_t i, j; 680 681 for (i = 0; i < interfaces->count; i++) { 682 struct hostapd_data *hapd = NULL; 683 684 iface = interfaces->iface[i]; 685 for (j = 0; j < iface->num_bss; j++) { 686 hapd = iface->bss[j]; 687 if (os_strcmp(ifname, hapd->conf->iface) == 0) 688 break; 689 hapd = NULL; 690 } 691 692 if (hapd && sta_track_get(iface, addr)) 693 return hapd; 694 } 695 696 return NULL; 697 } 698 699 700 #ifdef CONFIG_TAXONOMY 701 void sta_track_claim_taxonomy_info(struct hostapd_iface *iface, const u8 *addr, 702 struct wpabuf **probe_ie_taxonomy) 703 { 704 struct hostapd_sta_info *info; 705 706 info = sta_track_get(iface, addr); 707 if (!info) 708 return; 709 710 wpabuf_free(*probe_ie_taxonomy); 711 *probe_ie_taxonomy = info->probe_ie_taxonomy; 712 info->probe_ie_taxonomy = NULL; 713 } 714 #endif /* CONFIG_TAXONOMY */ 715 716 717 void handle_probe_req(struct hostapd_data *hapd, 718 const struct ieee80211_mgmt *mgmt, size_t len, 719 int ssi_signal) 720 { 721 u8 *resp; 722 struct ieee802_11_elems elems; 723 const u8 *ie; 724 size_t ie_len; 725 size_t i, resp_len; 726 int noack; 727 enum ssid_match_result res; 728 int ret; 729 u16 csa_offs[2]; 730 size_t csa_offs_len; 731 732 if (len < IEEE80211_HDRLEN) 733 return; 734 ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN; 735 if (hapd->iconf->track_sta_max_num) 736 sta_track_add(hapd->iface, mgmt->sa, ssi_signal); 737 ie_len = len - IEEE80211_HDRLEN; 738 739 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 740 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 741 mgmt->sa, mgmt->da, mgmt->bssid, 742 ie, ie_len, ssi_signal) > 0) 743 return; 744 745 if (!hapd->iconf->send_probe_response) 746 return; 747 748 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 749 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 750 MAC2STR(mgmt->sa)); 751 return; 752 } 753 754 if ((!elems.ssid || !elems.supp_rates)) { 755 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 756 "without SSID or supported rates element", 757 MAC2STR(mgmt->sa)); 758 return; 759 } 760 761 /* 762 * No need to reply if the Probe Request frame was sent on an adjacent 763 * channel. IEEE Std 802.11-2012 describes this as a requirement for an 764 * AP with dot11RadioMeasurementActivated set to true, but strictly 765 * speaking does not allow such ignoring of Probe Request frames if 766 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce 767 * number of unnecessary Probe Response frames for cases where the STA 768 * is less likely to see them (Probe Request frame sent on a 769 * neighboring, but partially overlapping, channel). 770 */ 771 if (elems.ds_params && 772 hapd->iface->current_mode && 773 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G || 774 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) && 775 hapd->iconf->channel != elems.ds_params[0]) { 776 wpa_printf(MSG_DEBUG, 777 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u", 778 hapd->iconf->channel, elems.ds_params[0]); 779 return; 780 } 781 782 #ifdef CONFIG_P2P 783 if (hapd->p2p && hapd->p2p_group && elems.wps_ie) { 784 struct wpabuf *wps; 785 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 786 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 787 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 788 "due to mismatch with Requested Device " 789 "Type"); 790 wpabuf_free(wps); 791 return; 792 } 793 wpabuf_free(wps); 794 } 795 796 if (hapd->p2p && hapd->p2p_group && elems.p2p) { 797 struct wpabuf *p2p; 798 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 799 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 800 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 801 "due to mismatch with Device ID"); 802 wpabuf_free(p2p); 803 return; 804 } 805 wpabuf_free(p2p); 806 } 807 #endif /* CONFIG_P2P */ 808 809 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 && 810 elems.ssid_list_len == 0) { 811 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 812 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 813 return; 814 } 815 816 #ifdef CONFIG_P2P 817 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 818 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 819 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 820 P2P_WILDCARD_SSID_LEN) == 0) { 821 /* Process P2P Wildcard SSID like Wildcard SSID */ 822 elems.ssid_len = 0; 823 } 824 #endif /* CONFIG_P2P */ 825 826 #ifdef CONFIG_TAXONOMY 827 { 828 struct sta_info *sta; 829 struct hostapd_sta_info *info; 830 831 if ((sta = ap_get_sta(hapd, mgmt->sa)) != NULL) { 832 taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len); 833 } else if ((info = sta_track_get(hapd->iface, 834 mgmt->sa)) != NULL) { 835 taxonomy_hostapd_sta_info_probe_req(hapd, info, 836 ie, ie_len); 837 } 838 } 839 #endif /* CONFIG_TAXONOMY */ 840 841 res = ssid_match(hapd, elems.ssid, elems.ssid_len, 842 elems.ssid_list, elems.ssid_list_len); 843 if (res == NO_SSID_MATCH) { 844 if (!(mgmt->da[0] & 0x01)) { 845 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 846 " for foreign SSID '%s' (DA " MACSTR ")%s", 847 MAC2STR(mgmt->sa), 848 wpa_ssid_txt(elems.ssid, elems.ssid_len), 849 MAC2STR(mgmt->da), 850 elems.ssid_list ? " (SSID list)" : ""); 851 } 852 return; 853 } 854 855 #ifdef CONFIG_INTERWORKING 856 if (hapd->conf->interworking && 857 elems.interworking && elems.interworking_len >= 1) { 858 u8 ant = elems.interworking[0] & 0x0f; 859 if (ant != INTERWORKING_ANT_WILDCARD && 860 ant != hapd->conf->access_network_type) { 861 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 862 " for mismatching ANT %u ignored", 863 MAC2STR(mgmt->sa), ant); 864 return; 865 } 866 } 867 868 if (hapd->conf->interworking && elems.interworking && 869 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 870 const u8 *hessid; 871 if (elems.interworking_len == 7) 872 hessid = elems.interworking + 1; 873 else 874 hessid = elems.interworking + 1 + 2; 875 if (!is_broadcast_ether_addr(hessid) && 876 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 877 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 878 " for mismatching HESSID " MACSTR 879 " ignored", 880 MAC2STR(mgmt->sa), MAC2STR(hessid)); 881 return; 882 } 883 } 884 #endif /* CONFIG_INTERWORKING */ 885 886 #ifdef CONFIG_P2P 887 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 888 supp_rates_11b_only(&elems)) { 889 /* Indicates support for 11b rates only */ 890 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from " 891 MACSTR " with only 802.11b rates", 892 MAC2STR(mgmt->sa)); 893 return; 894 } 895 #endif /* CONFIG_P2P */ 896 897 /* TODO: verify that supp_rates contains at least one matching rate 898 * with AP configuration */ 899 900 if (hapd->conf->no_probe_resp_if_seen_on && 901 is_multicast_ether_addr(mgmt->da) && 902 is_multicast_ether_addr(mgmt->bssid) && 903 sta_track_seen_on(hapd->iface, mgmt->sa, 904 hapd->conf->no_probe_resp_if_seen_on)) { 905 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 906 " since STA has been seen on %s", 907 hapd->conf->iface, MAC2STR(mgmt->sa), 908 hapd->conf->no_probe_resp_if_seen_on); 909 return; 910 } 911 912 if (hapd->conf->no_probe_resp_if_max_sta && 913 is_multicast_ether_addr(mgmt->da) && 914 is_multicast_ether_addr(mgmt->bssid) && 915 hapd->num_sta >= hapd->conf->max_num_sta && 916 !ap_get_sta(hapd, mgmt->sa)) { 917 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR 918 " since no room for additional STA", 919 hapd->conf->iface, MAC2STR(mgmt->sa)); 920 return; 921 } 922 923 #ifdef CONFIG_TESTING_OPTIONS 924 if (hapd->iconf->ignore_probe_probability > 0.0 && 925 drand48() < hapd->iconf->ignore_probe_probability) { 926 wpa_printf(MSG_INFO, 927 "TESTING: ignoring probe request from " MACSTR, 928 MAC2STR(mgmt->sa)); 929 return; 930 } 931 #endif /* CONFIG_TESTING_OPTIONS */ 932 933 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL, 934 &resp_len); 935 if (resp == NULL) 936 return; 937 938 /* 939 * If this is a broadcast probe request, apply no ack policy to avoid 940 * excessive retries. 941 */ 942 noack = !!(res == WILDCARD_SSID_MATCH && 943 is_broadcast_ether_addr(mgmt->da)); 944 945 csa_offs_len = 0; 946 if (hapd->csa_in_progress) { 947 if (hapd->cs_c_off_proberesp) 948 csa_offs[csa_offs_len++] = 949 hapd->cs_c_off_proberesp; 950 951 if (hapd->cs_c_off_ecsa_proberesp) 952 csa_offs[csa_offs_len++] = 953 hapd->cs_c_off_ecsa_proberesp; 954 } 955 956 ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack, 957 csa_offs_len ? csa_offs : NULL, 958 csa_offs_len); 959 960 if (ret < 0) 961 wpa_printf(MSG_INFO, "handle_probe_req: send failed"); 962 963 os_free(resp); 964 965 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 966 "SSID", MAC2STR(mgmt->sa), 967 elems.ssid_len == 0 ? "broadcast" : "our"); 968 } 969 970 971 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 972 size_t *resp_len) 973 { 974 /* check probe response offloading caps and print warnings */ 975 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 976 return NULL; 977 978 #ifdef CONFIG_WPS 979 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 980 (!(hapd->iface->probe_resp_offloads & 981 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 982 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 983 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 984 "Probe Response while not supporting this"); 985 #endif /* CONFIG_WPS */ 986 987 #ifdef CONFIG_P2P 988 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 989 !(hapd->iface->probe_resp_offloads & 990 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 991 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 992 "Probe Response while not supporting this"); 993 #endif /* CONFIG_P2P */ 994 995 if (hapd->conf->interworking && 996 !(hapd->iface->probe_resp_offloads & 997 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 998 wpa_printf(MSG_WARNING, "Device is trying to offload " 999 "Interworking Probe Response while not supporting " 1000 "this"); 1001 1002 /* Generate a Probe Response template for the non-P2P case */ 1003 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len); 1004 } 1005 1006 #endif /* NEED_AP_MLME */ 1007 1008 1009 void sta_track_del(struct hostapd_sta_info *info) 1010 { 1011 #ifdef CONFIG_TAXONOMY 1012 wpabuf_free(info->probe_ie_taxonomy); 1013 info->probe_ie_taxonomy = NULL; 1014 #endif /* CONFIG_TAXONOMY */ 1015 os_free(info); 1016 } 1017 1018 1019 int ieee802_11_build_ap_params(struct hostapd_data *hapd, 1020 struct wpa_driver_ap_params *params) 1021 { 1022 struct ieee80211_mgmt *head = NULL; 1023 u8 *tail = NULL; 1024 size_t head_len = 0, tail_len = 0; 1025 u8 *resp = NULL; 1026 size_t resp_len = 0; 1027 #ifdef NEED_AP_MLME 1028 u16 capab_info; 1029 u8 *pos, *tailpos, *csa_pos; 1030 1031 #define BEACON_HEAD_BUF_SIZE 256 1032 #define BEACON_TAIL_BUF_SIZE 512 1033 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 1034 tail_len = BEACON_TAIL_BUF_SIZE; 1035 #ifdef CONFIG_WPS 1036 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 1037 tail_len += wpabuf_len(hapd->wps_beacon_ie); 1038 #endif /* CONFIG_WPS */ 1039 #ifdef CONFIG_P2P 1040 if (hapd->p2p_beacon_ie) 1041 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 1042 #endif /* CONFIG_P2P */ 1043 #ifdef CONFIG_FST 1044 if (hapd->iface->fst_ies) 1045 tail_len += wpabuf_len(hapd->iface->fst_ies); 1046 #endif /* CONFIG_FST */ 1047 if (hapd->conf->vendor_elements) 1048 tail_len += wpabuf_len(hapd->conf->vendor_elements); 1049 1050 #ifdef CONFIG_IEEE80211AC 1051 if (hapd->conf->vendor_vht) { 1052 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) + 1053 2 + sizeof(struct ieee80211_vht_operation); 1054 } 1055 #endif /* CONFIG_IEEE80211AC */ 1056 1057 #ifdef CONFIG_IEEE80211AX 1058 if (hapd->iconf->ieee80211ax) { 1059 tail_len += 4 + sizeof (struct ieee80211_he_capabilities) + 1060 4 + sizeof (struct ieee80211_he_operation); 1061 } 1062 #endif 1063 1064 tail_len += hostapd_mbo_ie_len(hapd); 1065 1066 tailpos = tail = os_malloc(tail_len); 1067 if (head == NULL || tail == NULL) { 1068 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 1069 os_free(head); 1070 os_free(tail); 1071 return -1; 1072 } 1073 1074 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 1075 WLAN_FC_STYPE_BEACON); 1076 head->duration = host_to_le16(0); 1077 os_memset(head->da, 0xff, ETH_ALEN); 1078 1079 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 1080 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 1081 head->u.beacon.beacon_int = 1082 host_to_le16(hapd->iconf->beacon_int); 1083 1084 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 1085 capab_info = hostapd_own_capab_info(hapd); 1086 head->u.beacon.capab_info = host_to_le16(capab_info); 1087 pos = &head->u.beacon.variable[0]; 1088 1089 /* SSID */ 1090 *pos++ = WLAN_EID_SSID; 1091 if (hapd->conf->ignore_broadcast_ssid == 2) { 1092 /* clear the data, but keep the correct length of the SSID */ 1093 *pos++ = hapd->conf->ssid.ssid_len; 1094 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 1095 pos += hapd->conf->ssid.ssid_len; 1096 } else if (hapd->conf->ignore_broadcast_ssid) { 1097 *pos++ = 0; /* empty SSID */ 1098 } else { 1099 *pos++ = hapd->conf->ssid.ssid_len; 1100 os_memcpy(pos, hapd->conf->ssid.ssid, 1101 hapd->conf->ssid.ssid_len); 1102 pos += hapd->conf->ssid.ssid_len; 1103 } 1104 1105 /* Supported rates */ 1106 pos = hostapd_eid_supp_rates(hapd, pos); 1107 1108 /* DS Params */ 1109 pos = hostapd_eid_ds_params(hapd, pos); 1110 1111 head_len = pos - (u8 *) head; 1112 1113 tailpos = hostapd_eid_country(hapd, tailpos, 1114 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1115 1116 /* Power Constraint element */ 1117 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos); 1118 1119 /* CSA IE */ 1120 csa_pos = hostapd_eid_csa(hapd, tailpos); 1121 if (csa_pos != tailpos) 1122 hapd->cs_c_off_beacon = csa_pos - tail - 1; 1123 tailpos = csa_pos; 1124 1125 /* ERP Information element */ 1126 tailpos = hostapd_eid_erp_info(hapd, tailpos); 1127 1128 /* Extended supported rates */ 1129 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 1130 1131 /* RSN, MDIE, WPA */ 1132 tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE - 1133 tailpos); 1134 1135 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos, 1136 tail + BEACON_TAIL_BUF_SIZE - 1137 tailpos); 1138 1139 tailpos = hostapd_eid_bss_load(hapd, tailpos, 1140 tail + BEACON_TAIL_BUF_SIZE - tailpos); 1141 1142 /* eCSA IE */ 1143 csa_pos = hostapd_eid_ecsa(hapd, tailpos); 1144 if (csa_pos != tailpos) 1145 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1; 1146 tailpos = csa_pos; 1147 1148 tailpos = hostapd_eid_supported_op_classes(hapd, tailpos); 1149 1150 #ifdef CONFIG_IEEE80211N 1151 /* Secondary Channel Offset element */ 1152 /* TODO: The standard doesn't specify a position for this element. */ 1153 tailpos = hostapd_eid_secondary_channel(hapd, tailpos); 1154 1155 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 1156 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 1157 #endif /* CONFIG_IEEE80211N */ 1158 1159 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 1160 1161 /* 1162 * TODO: Time Advertisement element should only be included in some 1163 * DTIM Beacon frames. 1164 */ 1165 tailpos = hostapd_eid_time_adv(hapd, tailpos); 1166 1167 tailpos = hostapd_eid_interworking(hapd, tailpos); 1168 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 1169 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 1170 1171 #ifdef CONFIG_FST 1172 if (hapd->iface->fst_ies) { 1173 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies), 1174 wpabuf_len(hapd->iface->fst_ies)); 1175 tailpos += wpabuf_len(hapd->iface->fst_ies); 1176 } 1177 #endif /* CONFIG_FST */ 1178 1179 #ifdef CONFIG_IEEE80211AC 1180 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) { 1181 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0); 1182 tailpos = hostapd_eid_vht_operation(hapd, tailpos); 1183 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos); 1184 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos); 1185 } 1186 #endif /* CONFIG_IEEE80211AC */ 1187 1188 tailpos = hostapd_eid_fils_indic(hapd, tailpos, 0); 1189 1190 #ifdef CONFIG_IEEE80211AC 1191 if (hapd->conf->vendor_vht) 1192 tailpos = hostapd_eid_vendor_vht(hapd, tailpos); 1193 #endif /* CONFIG_IEEE80211AC */ 1194 1195 #ifdef CONFIG_IEEE80211AX 1196 if (hapd->iconf->ieee80211ax) { 1197 tailpos = hostapd_eid_vendor_he_capab(hapd, tailpos); 1198 tailpos = hostapd_eid_vendor_he_operation(hapd, tailpos); 1199 } 1200 #endif /* CONFIG_IEEE80211AX */ 1201 1202 /* Wi-Fi Alliance WMM */ 1203 tailpos = hostapd_eid_wmm(hapd, tailpos); 1204 1205 #ifdef CONFIG_WPS 1206 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 1207 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 1208 wpabuf_len(hapd->wps_beacon_ie)); 1209 tailpos += wpabuf_len(hapd->wps_beacon_ie); 1210 } 1211 #endif /* CONFIG_WPS */ 1212 1213 #ifdef CONFIG_P2P 1214 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 1215 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 1216 wpabuf_len(hapd->p2p_beacon_ie)); 1217 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 1218 } 1219 #endif /* CONFIG_P2P */ 1220 #ifdef CONFIG_P2P_MANAGER 1221 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 1222 P2P_MANAGE) 1223 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 1224 #endif /* CONFIG_P2P_MANAGER */ 1225 1226 #ifdef CONFIG_HS20 1227 tailpos = hostapd_eid_hs20_indication(hapd, tailpos); 1228 tailpos = hostapd_eid_osen(hapd, tailpos); 1229 #endif /* CONFIG_HS20 */ 1230 1231 tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos); 1232 1233 if (hapd->conf->vendor_elements) { 1234 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements), 1235 wpabuf_len(hapd->conf->vendor_elements)); 1236 tailpos += wpabuf_len(hapd->conf->vendor_elements); 1237 } 1238 1239 tail_len = tailpos > tail ? tailpos - tail : 0; 1240 1241 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 1242 #endif /* NEED_AP_MLME */ 1243 1244 os_memset(params, 0, sizeof(*params)); 1245 params->head = (u8 *) head; 1246 params->head_len = head_len; 1247 params->tail = tail; 1248 params->tail_len = tail_len; 1249 params->proberesp = resp; 1250 params->proberesp_len = resp_len; 1251 params->dtim_period = hapd->conf->dtim_period; 1252 params->beacon_int = hapd->iconf->beacon_int; 1253 params->basic_rates = hapd->iface->basic_rates; 1254 params->beacon_rate = hapd->iconf->beacon_rate; 1255 params->rate_type = hapd->iconf->rate_type; 1256 params->ssid = hapd->conf->ssid.ssid; 1257 params->ssid_len = hapd->conf->ssid.ssid_len; 1258 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) == 1259 (WPA_PROTO_WPA | WPA_PROTO_RSN)) 1260 params->pairwise_ciphers = hapd->conf->wpa_pairwise | 1261 hapd->conf->rsn_pairwise; 1262 else if (hapd->conf->wpa & WPA_PROTO_RSN) 1263 params->pairwise_ciphers = hapd->conf->rsn_pairwise; 1264 else if (hapd->conf->wpa & WPA_PROTO_WPA) 1265 params->pairwise_ciphers = hapd->conf->wpa_pairwise; 1266 params->group_cipher = hapd->conf->wpa_group; 1267 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt; 1268 params->auth_algs = hapd->conf->auth_algs; 1269 params->wpa_version = hapd->conf->wpa; 1270 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 1271 (hapd->conf->ieee802_1x && 1272 (hapd->conf->default_wep_key_len || 1273 hapd->conf->individual_wep_key_len)); 1274 switch (hapd->conf->ignore_broadcast_ssid) { 1275 case 0: 1276 params->hide_ssid = NO_SSID_HIDING; 1277 break; 1278 case 1: 1279 params->hide_ssid = HIDDEN_SSID_ZERO_LEN; 1280 break; 1281 case 2: 1282 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 1283 break; 1284 } 1285 params->isolate = hapd->conf->isolate; 1286 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK; 1287 #ifdef NEED_AP_MLME 1288 params->cts_protect = !!(ieee802_11_erp_info(hapd) & 1289 ERP_INFO_USE_PROTECTION); 1290 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 && 1291 hapd->iconf->preamble == SHORT_PREAMBLE; 1292 if (hapd->iface->current_mode && 1293 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 1294 params->short_slot_time = 1295 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 1296 else 1297 params->short_slot_time = -1; 1298 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 1299 params->ht_opmode = -1; 1300 else 1301 params->ht_opmode = hapd->iface->ht_op_mode; 1302 #endif /* NEED_AP_MLME */ 1303 params->interworking = hapd->conf->interworking; 1304 if (hapd->conf->interworking && 1305 !is_zero_ether_addr(hapd->conf->hessid)) 1306 params->hessid = hapd->conf->hessid; 1307 params->access_network_type = hapd->conf->access_network_type; 1308 params->ap_max_inactivity = hapd->conf->ap_max_inactivity; 1309 #ifdef CONFIG_P2P 1310 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow; 1311 #endif /* CONFIG_P2P */ 1312 #ifdef CONFIG_HS20 1313 params->disable_dgaf = hapd->conf->disable_dgaf; 1314 if (hapd->conf->osen) { 1315 params->privacy = 1; 1316 params->osen = 1; 1317 } 1318 #endif /* CONFIG_HS20 */ 1319 params->multicast_to_unicast = hapd->conf->multicast_to_unicast; 1320 params->pbss = hapd->conf->pbss; 1321 return 0; 1322 } 1323 1324 1325 void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params) 1326 { 1327 os_free(params->tail); 1328 params->tail = NULL; 1329 os_free(params->head); 1330 params->head = NULL; 1331 os_free(params->proberesp); 1332 params->proberesp = NULL; 1333 } 1334 1335 1336 int ieee802_11_set_beacon(struct hostapd_data *hapd) 1337 { 1338 struct wpa_driver_ap_params params; 1339 struct hostapd_freq_params freq; 1340 struct hostapd_iface *iface = hapd->iface; 1341 struct hostapd_config *iconf = iface->conf; 1342 struct wpabuf *beacon, *proberesp, *assocresp; 1343 int res, ret = -1; 1344 1345 if (hapd->csa_in_progress) { 1346 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period"); 1347 return -1; 1348 } 1349 1350 hapd->beacon_set_done = 1; 1351 1352 if (ieee802_11_build_ap_params(hapd, ¶ms) < 0) 1353 return -1; 1354 1355 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) < 1356 0) 1357 goto fail; 1358 1359 params.beacon_ies = beacon; 1360 params.proberesp_ies = proberesp; 1361 params.assocresp_ies = assocresp; 1362 params.reenable = hapd->reenable_beacon; 1363 hapd->reenable_beacon = 0; 1364 1365 if (iface->current_mode && 1366 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq, 1367 iconf->channel, iconf->ieee80211n, 1368 iconf->ieee80211ac, 1369 iconf->secondary_channel, 1370 iconf->vht_oper_chwidth, 1371 iconf->vht_oper_centr_freq_seg0_idx, 1372 iconf->vht_oper_centr_freq_seg1_idx, 1373 iface->current_mode->vht_capab) == 0) 1374 params.freq = &freq; 1375 1376 res = hostapd_drv_set_ap(hapd, ¶ms); 1377 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 1378 if (res) 1379 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 1380 else 1381 ret = 0; 1382 fail: 1383 ieee802_11_free_ap_params(¶ms); 1384 return ret; 1385 } 1386 1387 1388 int ieee802_11_set_beacons(struct hostapd_iface *iface) 1389 { 1390 size_t i; 1391 int ret = 0; 1392 1393 for (i = 0; i < iface->num_bss; i++) { 1394 if (iface->bss[i]->started && 1395 ieee802_11_set_beacon(iface->bss[i]) < 0) 1396 ret = -1; 1397 } 1398 1399 return ret; 1400 } 1401 1402 1403 /* only update beacons if started */ 1404 int ieee802_11_update_beacons(struct hostapd_iface *iface) 1405 { 1406 size_t i; 1407 int ret = 0; 1408 1409 for (i = 0; i < iface->num_bss; i++) { 1410 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started && 1411 ieee802_11_set_beacon(iface->bss[i]) < 0) 1412 ret = -1; 1413 } 1414 1415 return ret; 1416 } 1417 1418 #endif /* CONFIG_NATIVE_WINDOWS */ 1419
