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) 2008-2009, Jouni Malinen <j (at) w1.fi> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * Alternatively, this software may be distributed under the terms of BSD 12 * license. 13 * 14 * See README and COPYING for more details. 15 */ 16 17 #include "utils/includes.h" 18 19 #ifndef CONFIG_NATIVE_WINDOWS 20 21 #include "utils/common.h" 22 #include "common/ieee802_11_defs.h" 23 #include "common/ieee802_11_common.h" 24 #include "drivers/driver.h" 25 #include "wps/wps_defs.h" 26 #include "p2p/p2p.h" 27 #include "hostapd.h" 28 #include "ieee802_11.h" 29 #include "wpa_auth.h" 30 #include "wmm.h" 31 #include "ap_config.h" 32 #include "sta_info.h" 33 #include "p2p_hostapd.h" 34 #include "ap_drv_ops.h" 35 #include "beacon.h" 36 #include "hs20.h" 37 38 39 #ifdef NEED_AP_MLME 40 41 static u8 ieee802_11_erp_info(struct hostapd_data *hapd) 42 { 43 u8 erp = 0; 44 45 if (hapd->iface->current_mode == NULL || 46 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 47 return 0; 48 49 if (hapd->iface->olbc) 50 erp |= ERP_INFO_USE_PROTECTION; 51 if (hapd->iface->num_sta_non_erp > 0) { 52 erp |= ERP_INFO_NON_ERP_PRESENT | 53 ERP_INFO_USE_PROTECTION; 54 } 55 if (hapd->iface->num_sta_no_short_preamble > 0 || 56 hapd->iconf->preamble == LONG_PREAMBLE) 57 erp |= ERP_INFO_BARKER_PREAMBLE_MODE; 58 59 return erp; 60 } 61 62 63 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid) 64 { 65 *eid++ = WLAN_EID_DS_PARAMS; 66 *eid++ = 1; 67 *eid++ = hapd->iconf->channel; 68 return eid; 69 } 70 71 72 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid) 73 { 74 if (hapd->iface->current_mode == NULL || 75 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G) 76 return eid; 77 78 /* Set NonERP_present and use_protection bits if there 79 * are any associated NonERP stations. */ 80 /* TODO: use_protection bit can be set to zero even if 81 * there are NonERP stations present. This optimization 82 * might be useful if NonERP stations are "quiet". 83 * See 802.11g/D6 E-1 for recommended practice. 84 * In addition, Non ERP present might be set, if AP detects Non ERP 85 * operation on other APs. */ 86 87 /* Add ERP Information element */ 88 *eid++ = WLAN_EID_ERP_INFO; 89 *eid++ = 1; 90 *eid++ = ieee802_11_erp_info(hapd); 91 92 return eid; 93 } 94 95 96 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing, 97 struct hostapd_channel_data *start, 98 struct hostapd_channel_data *prev) 99 { 100 if (end - pos < 3) 101 return pos; 102 103 /* first channel number */ 104 *pos++ = start->chan; 105 /* number of channels */ 106 *pos++ = (prev->chan - start->chan) / chan_spacing + 1; 107 /* maximum transmit power level */ 108 *pos++ = start->max_tx_power; 109 110 return pos; 111 } 112 113 114 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid, 115 int max_len) 116 { 117 u8 *pos = eid; 118 u8 *end = eid + max_len; 119 int i; 120 struct hostapd_hw_modes *mode; 121 struct hostapd_channel_data *start, *prev; 122 int chan_spacing = 1; 123 124 if (!hapd->iconf->ieee80211d || max_len < 6 || 125 hapd->iface->current_mode == NULL) 126 return eid; 127 128 *pos++ = WLAN_EID_COUNTRY; 129 pos++; /* length will be set later */ 130 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */ 131 pos += 3; 132 133 mode = hapd->iface->current_mode; 134 if (mode->mode == HOSTAPD_MODE_IEEE80211A) 135 chan_spacing = 4; 136 137 start = prev = NULL; 138 for (i = 0; i < mode->num_channels; i++) { 139 struct hostapd_channel_data *chan = &mode->channels[i]; 140 if (chan->flag & HOSTAPD_CHAN_DISABLED) 141 continue; 142 if (start && prev && 143 prev->chan + chan_spacing == chan->chan && 144 start->max_tx_power == chan->max_tx_power) { 145 prev = chan; 146 continue; /* can use same entry */ 147 } 148 149 if (start) { 150 pos = hostapd_eid_country_add(pos, end, chan_spacing, 151 start, prev); 152 start = NULL; 153 } 154 155 /* Start new group */ 156 start = prev = chan; 157 } 158 159 if (start) { 160 pos = hostapd_eid_country_add(pos, end, chan_spacing, 161 start, prev); 162 } 163 164 if ((pos - eid) & 1) { 165 if (end - pos < 1) 166 return eid; 167 *pos++ = 0; /* pad for 16-bit alignment */ 168 } 169 170 eid[1] = (pos - eid) - 2; 171 172 return pos; 173 } 174 175 176 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len) 177 { 178 const u8 *ie; 179 size_t ielen; 180 181 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen); 182 if (ie == NULL || ielen > len) 183 return eid; 184 185 os_memcpy(eid, ie, ielen); 186 return eid + ielen; 187 } 188 189 190 static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd, 191 struct sta_info *sta, 192 const struct ieee80211_mgmt *req, 193 int is_p2p, size_t *resp_len) 194 { 195 struct ieee80211_mgmt *resp; 196 u8 *pos, *epos; 197 size_t buflen; 198 199 #define MAX_PROBERESP_LEN 768 200 buflen = MAX_PROBERESP_LEN; 201 #ifdef CONFIG_WPS 202 if (hapd->wps_probe_resp_ie) 203 buflen += wpabuf_len(hapd->wps_probe_resp_ie); 204 #endif /* CONFIG_WPS */ 205 #ifdef CONFIG_P2P 206 if (hapd->p2p_probe_resp_ie) 207 buflen += wpabuf_len(hapd->p2p_probe_resp_ie); 208 #endif /* CONFIG_P2P */ 209 if (hapd->conf->vendor_elements) 210 buflen += wpabuf_len(hapd->conf->vendor_elements); 211 resp = os_zalloc(buflen); 212 if (resp == NULL) 213 return NULL; 214 215 epos = ((u8 *) resp) + MAX_PROBERESP_LEN; 216 217 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 218 WLAN_FC_STYPE_PROBE_RESP); 219 if (req) 220 os_memcpy(resp->da, req->sa, ETH_ALEN); 221 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN); 222 223 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN); 224 resp->u.probe_resp.beacon_int = 225 host_to_le16(hapd->iconf->beacon_int); 226 227 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 228 resp->u.probe_resp.capab_info = 229 host_to_le16(hostapd_own_capab_info(hapd, sta, 1)); 230 231 pos = resp->u.probe_resp.variable; 232 *pos++ = WLAN_EID_SSID; 233 *pos++ = hapd->conf->ssid.ssid_len; 234 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len); 235 pos += hapd->conf->ssid.ssid_len; 236 237 /* Supported rates */ 238 pos = hostapd_eid_supp_rates(hapd, pos); 239 240 /* DS Params */ 241 pos = hostapd_eid_ds_params(hapd, pos); 242 243 pos = hostapd_eid_country(hapd, pos, epos - pos); 244 245 /* ERP Information element */ 246 pos = hostapd_eid_erp_info(hapd, pos); 247 248 /* Extended supported rates */ 249 pos = hostapd_eid_ext_supp_rates(hapd, pos); 250 251 /* RSN, MDIE, WPA */ 252 pos = hostapd_eid_wpa(hapd, pos, epos - pos); 253 254 #ifdef CONFIG_IEEE80211N 255 pos = hostapd_eid_ht_capabilities(hapd, pos); 256 pos = hostapd_eid_ht_operation(hapd, pos); 257 #endif /* CONFIG_IEEE80211N */ 258 259 pos = hostapd_eid_ext_capab(hapd, pos); 260 261 pos = hostapd_eid_time_adv(hapd, pos); 262 pos = hostapd_eid_time_zone(hapd, pos); 263 264 pos = hostapd_eid_interworking(hapd, pos); 265 pos = hostapd_eid_adv_proto(hapd, pos); 266 pos = hostapd_eid_roaming_consortium(hapd, pos); 267 268 #ifdef CONFIG_IEEE80211AC 269 pos = hostapd_eid_vht_capabilities(hapd, pos); 270 pos = hostapd_eid_vht_operation(hapd, pos); 271 #endif /* CONFIG_IEEE80211AC */ 272 273 /* Wi-Fi Alliance WMM */ 274 pos = hostapd_eid_wmm(hapd, pos); 275 276 #ifdef CONFIG_WPS 277 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) { 278 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie), 279 wpabuf_len(hapd->wps_probe_resp_ie)); 280 pos += wpabuf_len(hapd->wps_probe_resp_ie); 281 } 282 #endif /* CONFIG_WPS */ 283 284 #ifdef CONFIG_P2P 285 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p && 286 hapd->p2p_probe_resp_ie) { 287 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie), 288 wpabuf_len(hapd->p2p_probe_resp_ie)); 289 pos += wpabuf_len(hapd->p2p_probe_resp_ie); 290 } 291 #endif /* CONFIG_P2P */ 292 #ifdef CONFIG_P2P_MANAGER 293 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 294 P2P_MANAGE) 295 pos = hostapd_eid_p2p_manage(hapd, pos); 296 #endif /* CONFIG_P2P_MANAGER */ 297 298 #ifdef CONFIG_HS20 299 pos = hostapd_eid_hs20_indication(hapd, pos); 300 #endif /* CONFIG_HS20 */ 301 302 if (hapd->conf->vendor_elements) { 303 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements), 304 wpabuf_len(hapd->conf->vendor_elements)); 305 pos += wpabuf_len(hapd->conf->vendor_elements); 306 } 307 308 *resp_len = pos - (u8 *) resp; 309 return (u8 *) resp; 310 } 311 312 313 void handle_probe_req(struct hostapd_data *hapd, 314 const struct ieee80211_mgmt *mgmt, size_t len, 315 int ssi_signal) 316 { 317 u8 *resp; 318 struct ieee802_11_elems elems; 319 const u8 *ie; 320 size_t ie_len; 321 struct sta_info *sta = NULL; 322 size_t i, resp_len; 323 int noack; 324 325 ie = mgmt->u.probe_req.variable; 326 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req)) 327 return; 328 ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req)); 329 330 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) 331 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx, 332 mgmt->sa, mgmt->da, mgmt->bssid, 333 ie, ie_len, ssi_signal) > 0) 334 return; 335 336 if (!hapd->iconf->send_probe_response) 337 return; 338 339 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 340 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR, 341 MAC2STR(mgmt->sa)); 342 return; 343 } 344 345 if ((!elems.ssid || !elems.supp_rates)) { 346 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request " 347 "without SSID or supported rates element", 348 MAC2STR(mgmt->sa)); 349 return; 350 } 351 352 #ifdef CONFIG_P2P 353 if (hapd->p2p && elems.wps_ie) { 354 struct wpabuf *wps; 355 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 356 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) { 357 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 358 "due to mismatch with Requested Device " 359 "Type"); 360 wpabuf_free(wps); 361 return; 362 } 363 wpabuf_free(wps); 364 } 365 366 if (hapd->p2p && elems.p2p) { 367 struct wpabuf *p2p; 368 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE); 369 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) { 370 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request " 371 "due to mismatch with Device ID"); 372 wpabuf_free(p2p); 373 return; 374 } 375 wpabuf_free(p2p); 376 } 377 #endif /* CONFIG_P2P */ 378 379 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0) { 380 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for " 381 "broadcast SSID ignored", MAC2STR(mgmt->sa)); 382 return; 383 } 384 385 sta = ap_get_sta(hapd, mgmt->sa); 386 387 #ifdef CONFIG_P2P 388 if ((hapd->conf->p2p & P2P_GROUP_OWNER) && 389 elems.ssid_len == P2P_WILDCARD_SSID_LEN && 390 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 391 P2P_WILDCARD_SSID_LEN) == 0) { 392 /* Process P2P Wildcard SSID like Wildcard SSID */ 393 elems.ssid_len = 0; 394 } 395 #endif /* CONFIG_P2P */ 396 397 if (elems.ssid_len == 0 || 398 (elems.ssid_len == hapd->conf->ssid.ssid_len && 399 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) == 400 0)) { 401 if (sta) 402 sta->ssid_probe = &hapd->conf->ssid; 403 } else { 404 if (!(mgmt->da[0] & 0x01)) { 405 char ssid_txt[33]; 406 ieee802_11_print_ssid(ssid_txt, elems.ssid, 407 elems.ssid_len); 408 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 409 " for foreign SSID '%s' (DA " MACSTR ")", 410 MAC2STR(mgmt->sa), ssid_txt, 411 MAC2STR(mgmt->da)); 412 } 413 return; 414 } 415 416 #ifdef CONFIG_INTERWORKING 417 if (elems.interworking && elems.interworking_len >= 1) { 418 u8 ant = elems.interworking[0] & 0x0f; 419 if (ant != INTERWORKING_ANT_WILDCARD && 420 ant != hapd->conf->access_network_type) { 421 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 422 " for mismatching ANT %u ignored", 423 MAC2STR(mgmt->sa), ant); 424 return; 425 } 426 } 427 428 if (elems.interworking && 429 (elems.interworking_len == 7 || elems.interworking_len == 9)) { 430 const u8 *hessid; 431 if (elems.interworking_len == 7) 432 hessid = elems.interworking + 1; 433 else 434 hessid = elems.interworking + 1 + 2; 435 if (!is_broadcast_ether_addr(hessid) && 436 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) { 437 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR 438 " for mismatching HESSID " MACSTR 439 " ignored", 440 MAC2STR(mgmt->sa), MAC2STR(hessid)); 441 return; 442 } 443 } 444 #endif /* CONFIG_INTERWORKING */ 445 446 /* TODO: verify that supp_rates contains at least one matching rate 447 * with AP configuration */ 448 449 resp = hostapd_gen_probe_resp(hapd, sta, mgmt, elems.p2p != NULL, 450 &resp_len); 451 if (resp == NULL) 452 return; 453 454 /* 455 * If this is a broadcast probe request, apply no ack policy to avoid 456 * excessive retries. 457 */ 458 noack = !!(elems.ssid_len == 0 && is_broadcast_ether_addr(mgmt->da)); 459 460 if (hostapd_drv_send_mlme(hapd, resp, resp_len, noack) < 0) 461 perror("handle_probe_req: send"); 462 463 os_free(resp); 464 465 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s " 466 "SSID", MAC2STR(mgmt->sa), 467 elems.ssid_len == 0 ? "broadcast" : "our"); 468 } 469 470 471 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd, 472 size_t *resp_len) 473 { 474 /* check probe response offloading caps and print warnings */ 475 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD)) 476 return NULL; 477 478 #ifdef CONFIG_WPS 479 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie && 480 (!(hapd->iface->probe_resp_offloads & 481 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS | 482 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2)))) 483 wpa_printf(MSG_WARNING, "Device is trying to offload WPS " 484 "Probe Response while not supporting this"); 485 #endif /* CONFIG_WPS */ 486 487 #ifdef CONFIG_P2P 488 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie && 489 !(hapd->iface->probe_resp_offloads & 490 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P)) 491 wpa_printf(MSG_WARNING, "Device is trying to offload P2P " 492 "Probe Response while not supporting this"); 493 #endif /* CONFIG_P2P */ 494 495 if (hapd->conf->interworking && 496 !(hapd->iface->probe_resp_offloads & 497 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING)) 498 wpa_printf(MSG_WARNING, "Device is trying to offload " 499 "Interworking Probe Response while not supporting " 500 "this"); 501 502 /* Generate a Probe Response template for the non-P2P case */ 503 return hostapd_gen_probe_resp(hapd, NULL, NULL, 0, resp_len); 504 } 505 506 #endif /* NEED_AP_MLME */ 507 508 509 void ieee802_11_set_beacon(struct hostapd_data *hapd) 510 { 511 struct ieee80211_mgmt *head = NULL; 512 u8 *tail = NULL; 513 size_t head_len = 0, tail_len = 0; 514 u8 *resp = NULL; 515 size_t resp_len = 0; 516 struct wpa_driver_ap_params params; 517 struct wpabuf *beacon, *proberesp, *assocresp; 518 #ifdef NEED_AP_MLME 519 u16 capab_info; 520 u8 *pos, *tailpos; 521 #endif /* NEED_AP_MLME */ 522 523 hapd->beacon_set_done = 1; 524 525 #ifdef NEED_AP_MLME 526 527 #define BEACON_HEAD_BUF_SIZE 256 528 #define BEACON_TAIL_BUF_SIZE 512 529 head = os_zalloc(BEACON_HEAD_BUF_SIZE); 530 tail_len = BEACON_TAIL_BUF_SIZE; 531 #ifdef CONFIG_WPS 532 if (hapd->conf->wps_state && hapd->wps_beacon_ie) 533 tail_len += wpabuf_len(hapd->wps_beacon_ie); 534 #endif /* CONFIG_WPS */ 535 #ifdef CONFIG_P2P 536 if (hapd->p2p_beacon_ie) 537 tail_len += wpabuf_len(hapd->p2p_beacon_ie); 538 #endif /* CONFIG_P2P */ 539 if (hapd->conf->vendor_elements) 540 tail_len += wpabuf_len(hapd->conf->vendor_elements); 541 tailpos = tail = os_malloc(tail_len); 542 if (head == NULL || tail == NULL) { 543 wpa_printf(MSG_ERROR, "Failed to set beacon data"); 544 os_free(head); 545 os_free(tail); 546 return; 547 } 548 549 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, 550 WLAN_FC_STYPE_BEACON); 551 head->duration = host_to_le16(0); 552 os_memset(head->da, 0xff, ETH_ALEN); 553 554 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN); 555 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN); 556 head->u.beacon.beacon_int = 557 host_to_le16(hapd->iconf->beacon_int); 558 559 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 560 capab_info = hostapd_own_capab_info(hapd, NULL, 0); 561 head->u.beacon.capab_info = host_to_le16(capab_info); 562 pos = &head->u.beacon.variable[0]; 563 564 /* SSID */ 565 *pos++ = WLAN_EID_SSID; 566 if (hapd->conf->ignore_broadcast_ssid == 2) { 567 /* clear the data, but keep the correct length of the SSID */ 568 *pos++ = hapd->conf->ssid.ssid_len; 569 os_memset(pos, 0, hapd->conf->ssid.ssid_len); 570 pos += hapd->conf->ssid.ssid_len; 571 } else if (hapd->conf->ignore_broadcast_ssid) { 572 *pos++ = 0; /* empty SSID */ 573 } else { 574 *pos++ = hapd->conf->ssid.ssid_len; 575 os_memcpy(pos, hapd->conf->ssid.ssid, 576 hapd->conf->ssid.ssid_len); 577 pos += hapd->conf->ssid.ssid_len; 578 } 579 580 /* Supported rates */ 581 pos = hostapd_eid_supp_rates(hapd, pos); 582 583 /* DS Params */ 584 pos = hostapd_eid_ds_params(hapd, pos); 585 586 head_len = pos - (u8 *) head; 587 588 tailpos = hostapd_eid_country(hapd, tailpos, 589 tail + BEACON_TAIL_BUF_SIZE - tailpos); 590 591 /* ERP Information element */ 592 tailpos = hostapd_eid_erp_info(hapd, tailpos); 593 594 /* Extended supported rates */ 595 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos); 596 597 /* RSN, MDIE, WPA */ 598 tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE - 599 tailpos); 600 601 #ifdef CONFIG_IEEE80211N 602 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos); 603 tailpos = hostapd_eid_ht_operation(hapd, tailpos); 604 #endif /* CONFIG_IEEE80211N */ 605 606 tailpos = hostapd_eid_ext_capab(hapd, tailpos); 607 608 /* 609 * TODO: Time Advertisement element should only be included in some 610 * DTIM Beacon frames. 611 */ 612 tailpos = hostapd_eid_time_adv(hapd, tailpos); 613 614 tailpos = hostapd_eid_interworking(hapd, tailpos); 615 tailpos = hostapd_eid_adv_proto(hapd, tailpos); 616 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos); 617 618 #ifdef CONFIG_IEEE80211AC 619 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos); 620 tailpos = hostapd_eid_vht_operation(hapd, tailpos); 621 #endif /* CONFIG_IEEE80211AC */ 622 623 /* Wi-Fi Alliance WMM */ 624 tailpos = hostapd_eid_wmm(hapd, tailpos); 625 626 #ifdef CONFIG_WPS 627 if (hapd->conf->wps_state && hapd->wps_beacon_ie) { 628 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie), 629 wpabuf_len(hapd->wps_beacon_ie)); 630 tailpos += wpabuf_len(hapd->wps_beacon_ie); 631 } 632 #endif /* CONFIG_WPS */ 633 634 #ifdef CONFIG_P2P 635 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) { 636 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie), 637 wpabuf_len(hapd->p2p_beacon_ie)); 638 tailpos += wpabuf_len(hapd->p2p_beacon_ie); 639 } 640 #endif /* CONFIG_P2P */ 641 #ifdef CONFIG_P2P_MANAGER 642 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) == 643 P2P_MANAGE) 644 tailpos = hostapd_eid_p2p_manage(hapd, tailpos); 645 #endif /* CONFIG_P2P_MANAGER */ 646 647 #ifdef CONFIG_HS20 648 tailpos = hostapd_eid_hs20_indication(hapd, tailpos); 649 #endif /* CONFIG_HS20 */ 650 651 if (hapd->conf->vendor_elements) { 652 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements), 653 wpabuf_len(hapd->conf->vendor_elements)); 654 tailpos += wpabuf_len(hapd->conf->vendor_elements); 655 } 656 657 tail_len = tailpos > tail ? tailpos - tail : 0; 658 659 resp = hostapd_probe_resp_offloads(hapd, &resp_len); 660 #endif /* NEED_AP_MLME */ 661 662 os_memset(¶ms, 0, sizeof(params)); 663 params.head = (u8 *) head; 664 params.head_len = head_len; 665 params.tail = tail; 666 params.tail_len = tail_len; 667 params.proberesp = resp; 668 params.proberesp_len = resp_len; 669 params.dtim_period = hapd->conf->dtim_period; 670 params.beacon_int = hapd->iconf->beacon_int; 671 params.basic_rates = hapd->iface->basic_rates; 672 params.ssid = hapd->conf->ssid.ssid; 673 params.ssid_len = hapd->conf->ssid.ssid_len; 674 params.pairwise_ciphers = hapd->conf->rsn_pairwise ? 675 hapd->conf->rsn_pairwise : hapd->conf->wpa_pairwise; 676 params.group_cipher = hapd->conf->wpa_group; 677 params.key_mgmt_suites = hapd->conf->wpa_key_mgmt; 678 params.auth_algs = hapd->conf->auth_algs; 679 params.wpa_version = hapd->conf->wpa; 680 params.privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa || 681 (hapd->conf->ieee802_1x && 682 (hapd->conf->default_wep_key_len || 683 hapd->conf->individual_wep_key_len)); 684 switch (hapd->conf->ignore_broadcast_ssid) { 685 case 0: 686 params.hide_ssid = NO_SSID_HIDING; 687 break; 688 case 1: 689 params.hide_ssid = HIDDEN_SSID_ZERO_LEN; 690 break; 691 case 2: 692 params.hide_ssid = HIDDEN_SSID_ZERO_CONTENTS; 693 break; 694 } 695 hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp); 696 params.beacon_ies = beacon; 697 params.proberesp_ies = proberesp; 698 params.assocresp_ies = assocresp; 699 params.isolate = hapd->conf->isolate; 700 #ifdef NEED_AP_MLME 701 params.cts_protect = !!(ieee802_11_erp_info(hapd) & 702 ERP_INFO_USE_PROTECTION); 703 params.preamble = hapd->iface->num_sta_no_short_preamble == 0 && 704 hapd->iconf->preamble == SHORT_PREAMBLE; 705 if (hapd->iface->current_mode && 706 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G) 707 params.short_slot_time = 708 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1; 709 else 710 params.short_slot_time = -1; 711 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n) 712 params.ht_opmode = -1; 713 else 714 params.ht_opmode = hapd->iface->ht_op_mode; 715 #endif /* NEED_AP_MLME */ 716 params.interworking = hapd->conf->interworking; 717 if (hapd->conf->interworking && 718 !is_zero_ether_addr(hapd->conf->hessid)) 719 params.hessid = hapd->conf->hessid; 720 params.access_network_type = hapd->conf->access_network_type; 721 params.ap_max_inactivity = hapd->conf->ap_max_inactivity; 722 #ifdef CONFIG_HS20 723 params.disable_dgaf = hapd->conf->disable_dgaf; 724 #endif /* CONFIG_HS20 */ 725 if (hostapd_drv_set_ap(hapd, ¶ms)) 726 wpa_printf(MSG_ERROR, "Failed to set beacon parameters"); 727 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp); 728 729 os_free(tail); 730 os_free(head); 731 os_free(resp); 732 } 733 734 735 void ieee802_11_set_beacons(struct hostapd_iface *iface) 736 { 737 size_t i; 738 for (i = 0; i < iface->num_bss; i++) 739 ieee802_11_set_beacon(iface->bss[i]); 740 } 741 742 743 /* only update beacons if started */ 744 void ieee802_11_update_beacons(struct hostapd_iface *iface) 745 { 746 size_t i; 747 for (i = 0; i < iface->num_bss; i++) 748 if (iface->bss[i]->beacon_set_done) 749 ieee802_11_set_beacon(iface->bss[i]); 750 } 751 752 #endif /* CONFIG_NATIVE_WINDOWS */ 753
