src/ap/beacon.c

   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                 os_free(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 void handle_probe_req(struct hostapd_data *hapd,
 680                       const struct ieee80211_mgmt *mgmt, size_t len,
 681                       int ssi_signal)
 682 {
 683         u8 *resp;
 684         struct ieee802_11_elems elems;
 685         const u8 *ie;
 686         size_t ie_len;
 687         size_t i, resp_len;
 688         int noack;
 689         enum ssid_match_result res;
 690         int ret;
 691         u16 csa_offs[2];
 692         size_t csa_offs_len;
 693
 694         if (len < IEEE80211_HDRLEN)
 695                 return;
 696         ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN;
 697         if (hapd->iconf->track_sta_max_num)
 698                 sta_track_add(hapd->iface, mgmt->sa);
 699         ie_len = len - IEEE80211_HDRLEN;
 700
 701         for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
 702                 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
 703                                             mgmt->sa, mgmt->da, mgmt->bssid,
 704                                             ie, ie_len, ssi_signal) > 0)
 705                         return;
 706
 707         if (!hapd->iconf->send_probe_response)
 708                 return;
 709
 710         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
 711                 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
 712                            MAC2STR(mgmt->sa));
 713                 return;
 714         }
 715
 716         if ((!elems.ssid || !elems.supp_rates)) {
 717                 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
 718                            "without SSID or supported rates element",
 719                            MAC2STR(mgmt->sa));
 720                 return;
 721         }
 722
 723         /*
 724          * No need to reply if the Probe Request frame was sent on an adjacent
 725          * channel. IEEE Std 802.11-2012 describes this as a requirement for an
 726          * AP with dot11RadioMeasurementActivated set to true, but strictly
 727          * speaking does not allow such ignoring of Probe Request frames if
 728          * dot11RadioMeasurementActivated is false. Anyway, this can help reduce
 729          * number of unnecessary Probe Response frames for cases where the STA
 730          * is less likely to see them (Probe Request frame sent on a
 731          * neighboring, but partially overlapping, channel).
 732          */
 733         if (elems.ds_params &&
 734             hapd->iface->current_mode &&
 735             (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
 736              hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
 737             hapd->iconf->channel != elems.ds_params[0]) {
 738                 wpa_printf(MSG_DEBUG,
 739                            "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
 740                            hapd->iconf->channel, elems.ds_params[0]);
 741                 return;
 742         }
 743
 744 #ifdef CONFIG_P2P
 745         if (hapd->p2p && hapd->p2p_group && elems.wps_ie) {
 746                 struct wpabuf *wps;
 747                 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 748                 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
 749                         wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
 750                                    "due to mismatch with Requested Device "
 751                                    "Type");
 752                         wpabuf_free(wps);
 753                         return;
 754                 }
 755                 wpabuf_free(wps);
 756         }
 757
 758         if (hapd->p2p && hapd->p2p_group && elems.p2p) {
 759                 struct wpabuf *p2p;
 760                 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE);
 761                 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) {
 762                         wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
 763                                    "due to mismatch with Device ID");
 764                         wpabuf_free(p2p);
 765                         return;
 766                 }
 767                 wpabuf_free(p2p);
 768         }
 769 #endif /* CONFIG_P2P */
 770
 771         if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 &&
 772             elems.ssid_list_len == 0) {
 773                 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
 774                            "broadcast SSID ignored", MAC2STR(mgmt->sa));
 775                 return;
 776         }
 777
 778 #ifdef CONFIG_P2P
 779         if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
 780             elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
 781             os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
 782                       P2P_WILDCARD_SSID_LEN) == 0) {
 783                 /* Process P2P Wildcard SSID like Wildcard SSID */
 784                 elems.ssid_len = 0;
 785         }
 786 #endif /* CONFIG_P2P */
 787
 788 #ifdef CONFIG_TAXONOMY
 789         {
 790                 struct sta_info *sta = ap_get_sta(hapd, mgmt->sa);
 791                 if (sta)
 792                         taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len);
 793         }
 794 #endif /* CONFIG_TAXONOMY */
 795
 796         res = ssid_match(hapd, elems.ssid, elems.ssid_len,
 797                          elems.ssid_list, elems.ssid_list_len);
 798         if (res == NO_SSID_MATCH) {
 799                 if (!(mgmt->da[0] & 0x01)) {
 800                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 801                                    " for foreign SSID '%s' (DA " MACSTR ")%s",
 802                                    MAC2STR(mgmt->sa),
 803                                    wpa_ssid_txt(elems.ssid, elems.ssid_len),
 804                                    MAC2STR(mgmt->da),
 805                                    elems.ssid_list ? " (SSID list)" : "");
 806                 }
 807                 return;
 808         }
 809
 810 #ifdef CONFIG_INTERWORKING
 811         if (hapd->conf->interworking &&
 812             elems.interworking && elems.interworking_len >= 1) {
 813                 u8 ant = elems.interworking[0] & 0x0f;
 814                 if (ant != INTERWORKING_ANT_WILDCARD &&
 815                     ant != hapd->conf->access_network_type) {
 816                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 817                                    " for mismatching ANT %u ignored",
 818                                    MAC2STR(mgmt->sa), ant);
 819                         return;
 820                 }
 821         }
 822
 823         if (hapd->conf->interworking && elems.interworking &&
 824             (elems.interworking_len == 7 || elems.interworking_len == 9)) {
 825                 const u8 *hessid;
 826                 if (elems.interworking_len == 7)
 827                         hessid = elems.interworking + 1;
 828                 else
 829                         hessid = elems.interworking + 1 + 2;
 830                 if (!is_broadcast_ether_addr(hessid) &&
 831                     os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
 832                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 833                                    " for mismatching HESSID " MACSTR
 834                                    " ignored",
 835                                    MAC2STR(mgmt->sa), MAC2STR(hessid));
 836                         return;
 837                 }
 838         }
 839 #endif /* CONFIG_INTERWORKING */
 840
 841 #ifdef CONFIG_P2P
 842         if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
 843             supp_rates_11b_only(&elems)) {
 844                 /* Indicates support for 11b rates only */
 845                 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from "
 846                            MACSTR " with only 802.11b rates",
 847                            MAC2STR(mgmt->sa));
 848                 return;
 849         }
 850 #endif /* CONFIG_P2P */
 851
 852         /* TODO: verify that supp_rates contains at least one matching rate
 853          * with AP configuration */
 854
 855         if (hapd->conf->no_probe_resp_if_seen_on &&
 856             is_multicast_ether_addr(mgmt->da) &&
 857             is_multicast_ether_addr(mgmt->bssid) &&
 858             sta_track_seen_on(hapd->iface, mgmt->sa,
 859                               hapd->conf->no_probe_resp_if_seen_on)) {
 860                 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
 861                            " since STA has been seen on %s",
 862                            hapd->conf->iface, MAC2STR(mgmt->sa),
 863                            hapd->conf->no_probe_resp_if_seen_on);
 864                 return;
 865         }
 866
 867         if (hapd->conf->no_probe_resp_if_max_sta &&
 868             is_multicast_ether_addr(mgmt->da) &&
 869             is_multicast_ether_addr(mgmt->bssid) &&
 870             hapd->num_sta >= hapd->conf->max_num_sta &&
 871             !ap_get_sta(hapd, mgmt->sa)) {
 872                 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
 873                            " since no room for additional STA",
 874                            hapd->conf->iface, MAC2STR(mgmt->sa));
 875                 return;
 876         }
 877
 878 #ifdef CONFIG_TESTING_OPTIONS
 879         if (hapd->iconf->ignore_probe_probability > 0.0 &&
 880             drand48() < hapd->iconf->ignore_probe_probability) {
 881                 wpa_printf(MSG_INFO,
 882                            "TESTING: ignoring probe request from " MACSTR,
 883                            MAC2STR(mgmt->sa));
 884                 return;
 885         }
 886 #endif /* CONFIG_TESTING_OPTIONS */
 887
 888         resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL,
 889                                       &resp_len);
 890         if (resp == NULL)
 891                 return;
 892
 893         /*
 894          * If this is a broadcast probe request, apply no ack policy to avoid
 895          * excessive retries.
 896          */
 897         noack = !!(res == WILDCARD_SSID_MATCH &&
 898                    is_broadcast_ether_addr(mgmt->da));
 899
 900         csa_offs_len = 0;
 901         if (hapd->csa_in_progress) {
 902                 if (hapd->cs_c_off_proberesp)
 903                         csa_offs[csa_offs_len++] =
 904                                 hapd->cs_c_off_proberesp;
 905
 906                 if (hapd->cs_c_off_ecsa_proberesp)
 907                         csa_offs[csa_offs_len++] =
 908                                 hapd->cs_c_off_ecsa_proberesp;
 909         }
 910
 911         ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack,
 912                                         csa_offs_len ? csa_offs : NULL,
 913                                         csa_offs_len);
 914
 915         if (ret < 0)
 916                 wpa_printf(MSG_INFO, "handle_probe_req: send failed");
 917
 918         os_free(resp);
 919
 920         wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
 921                    "SSID", MAC2STR(mgmt->sa),
 922                    elems.ssid_len == 0 ? "broadcast" : "our");
 923 }
 924
 925
 926 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd,
 927                                         size_t *resp_len)
 928 {
 929         /* check probe response offloading caps and print warnings */
 930         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD))
 931                 return NULL;
 932
 933 #ifdef CONFIG_WPS
 934         if (hapd->conf->wps_state && hapd->wps_probe_resp_ie &&
 935             (!(hapd->iface->probe_resp_offloads &
 936                (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS |
 937                 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2))))
 938                 wpa_printf(MSG_WARNING, "Device is trying to offload WPS "
 939                            "Probe Response while not supporting this");
 940 #endif /* CONFIG_WPS */
 941
 942 #ifdef CONFIG_P2P
 943         if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie &&
 944             !(hapd->iface->probe_resp_offloads &
 945               WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P))
 946                 wpa_printf(MSG_WARNING, "Device is trying to offload P2P "
 947                            "Probe Response while not supporting this");
 948 #endif  /* CONFIG_P2P */
 949
 950         if (hapd->conf->interworking &&
 951             !(hapd->iface->probe_resp_offloads &
 952               WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING))
 953                 wpa_printf(MSG_WARNING, "Device is trying to offload "
 954                            "Interworking Probe Response while not supporting "
 955                            "this");
 956
 957         /* Generate a Probe Response template for the non-P2P case */
 958         return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len);
 959 }
 960
 961 #endif /* NEED_AP_MLME */
 962
 963
 964 int ieee802_11_build_ap_params(struct hostapd_data *hapd,
 965                                struct wpa_driver_ap_params *params)
 966 {
 967         struct ieee80211_mgmt *head = NULL;
 968         u8 *tail = NULL;
 969         size_t head_len = 0, tail_len = 0;
 970         u8 *resp = NULL;
 971         size_t resp_len = 0;
 972 #ifdef NEED_AP_MLME
 973         u16 capab_info;
 974         u8 *pos, *tailpos, *csa_pos;
 975
 976 #define BEACON_HEAD_BUF_SIZE 256
 977 #define BEACON_TAIL_BUF_SIZE 512
 978         head = os_zalloc(BEACON_HEAD_BUF_SIZE);
 979         tail_len = BEACON_TAIL_BUF_SIZE;
 980 #ifdef CONFIG_WPS
 981         if (hapd->conf->wps_state && hapd->wps_beacon_ie)
 982                 tail_len += wpabuf_len(hapd->wps_beacon_ie);
 983 #endif /* CONFIG_WPS */
 984 #ifdef CONFIG_P2P
 985         if (hapd->p2p_beacon_ie)
 986                 tail_len += wpabuf_len(hapd->p2p_beacon_ie);
 987 #endif /* CONFIG_P2P */
 988 #ifdef CONFIG_FST
 989         if (hapd->iface->fst_ies)
 990                 tail_len += wpabuf_len(hapd->iface->fst_ies);
 991 #endif /* CONFIG_FST */
 992         if (hapd->conf->vendor_elements)
 993                 tail_len += wpabuf_len(hapd->conf->vendor_elements);
 994
 995 #ifdef CONFIG_IEEE80211AC
 996         if (hapd->conf->vendor_vht) {
 997                 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
 998                         2 + sizeof(struct ieee80211_vht_operation);
 999         }
1000 #endif /* CONFIG_IEEE80211AC */
1001
1002         tail_len += hostapd_mbo_ie_len(hapd);
1003
1004         tailpos = tail = os_malloc(tail_len);
1005         if (head == NULL || tail == NULL) {
1006                 wpa_printf(MSG_ERROR, "Failed to set beacon data");
1007                 os_free(head);
1008                 os_free(tail);
1009                 return -1;
1010         }
1011
1012         head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1013                                            WLAN_FC_STYPE_BEACON);
1014         head->duration = host_to_le16(0);
1015         os_memset(head->da, 0xff, ETH_ALEN);
1016
1017         os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
1018         os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
1019         head->u.beacon.beacon_int =
1020                 host_to_le16(hapd->iconf->beacon_int);
1021
1022         /* hardware or low-level driver will setup seq_ctrl and timestamp */
1023         capab_info = hostapd_own_capab_info(hapd);
1024         head->u.beacon.capab_info = host_to_le16(capab_info);
1025         pos = &head->u.beacon.variable[0];
1026
1027         /* SSID */
1028         *pos++ = WLAN_EID_SSID;
1029         if (hapd->conf->ignore_broadcast_ssid == 2) {
1030                 /* clear the data, but keep the correct length of the SSID */
1031                 *pos++ = hapd->conf->ssid.ssid_len;
1032                 os_memset(pos, 0, hapd->conf->ssid.ssid_len);
1033                 pos += hapd->conf->ssid.ssid_len;
1034         } else if (hapd->conf->ignore_broadcast_ssid) {
1035                 *pos++ = 0; /* empty SSID */
1036         } else {
1037                 *pos++ = hapd->conf->ssid.ssid_len;
1038                 os_memcpy(pos, hapd->conf->ssid.ssid,
1039                           hapd->conf->ssid.ssid_len);
1040                 pos += hapd->conf->ssid.ssid_len;
1041         }
1042
1043         /* Supported rates */
1044         pos = hostapd_eid_supp_rates(hapd, pos);
1045
1046         /* DS Params */
1047         pos = hostapd_eid_ds_params(hapd, pos);
1048
1049         head_len = pos - (u8 *) head;
1050
1051         tailpos = hostapd_eid_country(hapd, tailpos,
1052                                       tail + BEACON_TAIL_BUF_SIZE - tailpos);
1053
1054         /* Power Constraint element */
1055         tailpos = hostapd_eid_pwr_constraint(hapd, tailpos);
1056
1057         /* CSA IE */
1058         csa_pos = hostapd_eid_csa(hapd, tailpos);
1059         if (csa_pos != tailpos)
1060                 hapd->cs_c_off_beacon = csa_pos - tail - 1;
1061         tailpos = csa_pos;
1062
1063         /* ERP Information element */
1064         tailpos = hostapd_eid_erp_info(hapd, tailpos);
1065
1066         /* Extended supported rates */
1067         tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
1068
1069         /* RSN, MDIE, WPA */
1070         tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
1071                                   tailpos);
1072
1073         tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos,
1074                                                tail + BEACON_TAIL_BUF_SIZE -
1075                                                tailpos);
1076
1077         tailpos = hostapd_eid_bss_load(hapd, tailpos,
1078                                        tail + BEACON_TAIL_BUF_SIZE - tailpos);
1079
1080         /* eCSA IE */
1081         csa_pos = hostapd_eid_ecsa(hapd, tailpos);
1082         if (csa_pos != tailpos)
1083                 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1;
1084         tailpos = csa_pos;
1085
1086         tailpos = hostapd_eid_supported_op_classes(hapd, tailpos);
1087
1088 #ifdef CONFIG_IEEE80211N
1089         /* Secondary Channel Offset element */
1090         /* TODO: The standard doesn't specify a position for this element. */
1091         tailpos = hostapd_eid_secondary_channel(hapd, tailpos);
1092
1093         tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
1094         tailpos = hostapd_eid_ht_operation(hapd, tailpos);
1095 #endif /* CONFIG_IEEE80211N */
1096
1097         tailpos = hostapd_eid_ext_capab(hapd, tailpos);
1098
1099         /*
1100          * TODO: Time Advertisement element should only be included in some
1101          * DTIM Beacon frames.
1102          */
1103         tailpos = hostapd_eid_time_adv(hapd, tailpos);
1104
1105         tailpos = hostapd_eid_interworking(hapd, tailpos);
1106         tailpos = hostapd_eid_adv_proto(hapd, tailpos);
1107         tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
1108
1109 #ifdef CONFIG_FST
1110         if (hapd->iface->fst_ies) {
1111                 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies),
1112                           wpabuf_len(hapd->iface->fst_ies));
1113                 tailpos += wpabuf_len(hapd->iface->fst_ies);
1114         }
1115 #endif /* CONFIG_FST */
1116
1117 #ifdef CONFIG_IEEE80211AC
1118         if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
1119                 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0);
1120                 tailpos = hostapd_eid_vht_operation(hapd, tailpos);
1121                 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos);
1122                 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos);
1123         }
1124         if (hapd->conf->vendor_vht)
1125                 tailpos = hostapd_eid_vendor_vht(hapd, tailpos);
1126 #endif /* CONFIG_IEEE80211AC */
1127
1128         /* Wi-Fi Alliance WMM */
1129         tailpos = hostapd_eid_wmm(hapd, tailpos);
1130
1131 #ifdef CONFIG_WPS
1132         if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
1133                 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
1134                           wpabuf_len(hapd->wps_beacon_ie));
1135                 tailpos += wpabuf_len(hapd->wps_beacon_ie);
1136         }
1137 #endif /* CONFIG_WPS */
1138
1139 #ifdef CONFIG_P2P
1140         if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
1141                 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
1142                           wpabuf_len(hapd->p2p_beacon_ie));
1143                 tailpos += wpabuf_len(hapd->p2p_beacon_ie);
1144         }
1145 #endif /* CONFIG_P2P */
1146 #ifdef CONFIG_P2P_MANAGER
1147         if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
1148             P2P_MANAGE)
1149                 tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
1150 #endif /* CONFIG_P2P_MANAGER */
1151
1152 #ifdef CONFIG_HS20
1153         tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
1154         tailpos = hostapd_eid_osen(hapd, tailpos);
1155 #endif /* CONFIG_HS20 */
1156
1157         tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos);
1158
1159         if (hapd->conf->vendor_elements) {
1160                 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
1161                           wpabuf_len(hapd->conf->vendor_elements));
1162                 tailpos += wpabuf_len(hapd->conf->vendor_elements);
1163         }
1164
1165         tail_len = tailpos > tail ? tailpos - tail : 0;
1166
1167         resp = hostapd_probe_resp_offloads(hapd, &resp_len);
1168 #endif /* NEED_AP_MLME */
1169
1170         os_memset(params, 0, sizeof(*params));
1171         params->head = (u8 *) head;
1172         params->head_len = head_len;
1173         params->tail = tail;
1174         params->tail_len = tail_len;
1175         params->proberesp = resp;
1176         params->proberesp_len = resp_len;
1177         params->dtim_period = hapd->conf->dtim_period;
1178         params->beacon_int = hapd->iconf->beacon_int;
1179         params->basic_rates = hapd->iface->basic_rates;
1180         params->ssid = hapd->conf->ssid.ssid;
1181         params->ssid_len = hapd->conf->ssid.ssid_len;
1182         if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) ==
1183             (WPA_PROTO_WPA | WPA_PROTO_RSN))
1184                 params->pairwise_ciphers = hapd->conf->wpa_pairwise |
1185                         hapd->conf->rsn_pairwise;
1186         else if (hapd->conf->wpa & WPA_PROTO_RSN)
1187                 params->pairwise_ciphers = hapd->conf->rsn_pairwise;
1188         else if (hapd->conf->wpa & WPA_PROTO_WPA)
1189                 params->pairwise_ciphers = hapd->conf->wpa_pairwise;
1190         params->group_cipher = hapd->conf->wpa_group;
1191         params->key_mgmt_suites = hapd->conf->wpa_key_mgmt;
1192         params->auth_algs = hapd->conf->auth_algs;
1193         params->wpa_version = hapd->conf->wpa;
1194         params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
1195                 (hapd->conf->ieee802_1x &&
1196                  (hapd->conf->default_wep_key_len ||
1197                   hapd->conf->individual_wep_key_len));
1198         switch (hapd->conf->ignore_broadcast_ssid) {
1199         case 0:
1200                 params->hide_ssid = NO_SSID_HIDING;
1201                 break;
1202         case 1:
1203                 params->hide_ssid = HIDDEN_SSID_ZERO_LEN;
1204                 break;
1205         case 2:
1206                 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
1207                 break;
1208         }
1209         params->isolate = hapd->conf->isolate;
1210         params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK;
1211 #ifdef NEED_AP_MLME
1212         params->cts_protect = !!(ieee802_11_erp_info(hapd) &
1213                                 ERP_INFO_USE_PROTECTION);
1214         params->preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
1215                 hapd->iconf->preamble == SHORT_PREAMBLE;
1216         if (hapd->iface->current_mode &&
1217             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1218                 params->short_slot_time =
1219                         hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
1220         else
1221                 params->short_slot_time = -1;
1222         if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
1223                 params->ht_opmode = -1;
1224         else
1225                 params->ht_opmode = hapd->iface->ht_op_mode;
1226 #endif /* NEED_AP_MLME */
1227         params->interworking = hapd->conf->interworking;
1228         if (hapd->conf->interworking &&
1229             !is_zero_ether_addr(hapd->conf->hessid))
1230                 params->hessid = hapd->conf->hessid;
1231         params->access_network_type = hapd->conf->access_network_type;
1232         params->ap_max_inactivity = hapd->conf->ap_max_inactivity;
1233 #ifdef CONFIG_P2P
1234         params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow;
1235 #endif /* CONFIG_P2P */
1236 #ifdef CONFIG_HS20
1237         params->disable_dgaf = hapd->conf->disable_dgaf;
1238         if (hapd->conf->osen) {
1239                 params->privacy = 1;
1240                 params->osen = 1;
1241         }
1242 #endif /* CONFIG_HS20 */
1243         params->pbss = hapd->conf->pbss;
1244         return 0;
1245 }
1246
1247
1248 void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params)
1249 {
1250         os_free(params->tail);
1251         params->tail = NULL;
1252         os_free(params->head);
1253         params->head = NULL;
1254         os_free(params->proberesp);
1255         params->proberesp = NULL;
1256 }
1257
1258
1259 int ieee802_11_set_beacon(struct hostapd_data *hapd)
1260 {
1261         struct wpa_driver_ap_params params;
1262         struct hostapd_freq_params freq;
1263         struct hostapd_iface *iface = hapd->iface;
1264         struct hostapd_config *iconf = iface->conf;
1265         struct wpabuf *beacon, *proberesp, *assocresp;
1266         int res, ret = -1;
1267
1268         if (hapd->csa_in_progress) {
1269                 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period");
1270                 return -1;
1271         }
1272
1273         hapd->beacon_set_done = 1;
1274
1275         if (ieee802_11_build_ap_params(hapd, &params) < 0)
1276                 return -1;
1277
1278         if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) <
1279             0)
1280                 goto fail;
1281
1282         params.beacon_ies = beacon;
1283         params.proberesp_ies = proberesp;
1284         params.assocresp_ies = assocresp;
1285         params.reenable = hapd->reenable_beacon;
1286         hapd->reenable_beacon = 0;
1287
1288         if (iface->current_mode &&
1289             hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq,
1290                                     iconf->channel, iconf->ieee80211n,
1291                                     iconf->ieee80211ac,
1292                                     iconf->secondary_channel,
1293                                     iconf->vht_oper_chwidth,
1294                                     iconf->vht_oper_centr_freq_seg0_idx,
1295                                     iconf->vht_oper_centr_freq_seg1_idx,
1296                                     iface->current_mode->vht_capab) == 0)
1297                 params.freq = &freq;
1298
1299         res = hostapd_drv_set_ap(hapd, &params);
1300         hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
1301         if (res)
1302                 wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
1303         else
1304                 ret = 0;
1305 fail:
1306         ieee802_11_free_ap_params(&params);
1307         return ret;
1308 }
1309
1310
1311 int ieee802_11_set_beacons(struct hostapd_iface *iface)
1312 {
1313         size_t i;
1314         int ret = 0;
1315
1316         for (i = 0; i < iface->num_bss; i++) {
1317                 if (iface->bss[i]->started &&
1318                     ieee802_11_set_beacon(iface->bss[i]) < 0)
1319                         ret = -1;
1320         }
1321
1322         return ret;
1323 }
1324
1325
1326 /* only update beacons if started */
1327 int ieee802_11_update_beacons(struct hostapd_iface *iface)
1328 {
1329         size_t i;
1330         int ret = 0;
1331
1332         for (i = 0; i < iface->num_bss; i++) {
1333                 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started &&
1334                     ieee802_11_set_beacon(iface->bss[i]) < 0)
1335                         ret = -1;
1336         }
1337
1338         return ret;
1339 }
1340
1341 #endif /* CONFIG_NATIVE_WINDOWS */