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AP: Do not use struct ieee80211_mgmt::u.probe_req
[thirdparty/hostap.git] / 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
33
34 #ifdef NEED_AP_MLME
35
36 static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid,
37 size_t len)
38 {
39 if (!hapd->conf->radio_measurements || len < 2 + 4)
40 return eid;
41
42 *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
43 *eid++ = 5;
44 *eid++ = (hapd->conf->radio_measurements & BIT(0)) ?
45 WLAN_RRM_CAPS_NEIGHBOR_REPORT : 0x00;
46 *eid++ = 0x00;
47 *eid++ = 0x00;
48 *eid++ = 0x00;
49 *eid++ = 0x00;
50 return eid;
51 }
52
53
54 static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len)
55 {
56 if (len < 2 + 5)
57 return eid;
58
59 #ifdef CONFIG_TESTING_OPTIONS
60 if (hapd->conf->bss_load_test_set) {
61 *eid++ = WLAN_EID_BSS_LOAD;
62 *eid++ = 5;
63 os_memcpy(eid, hapd->conf->bss_load_test, 5);
64 eid += 5;
65 return eid;
66 }
67 #endif /* CONFIG_TESTING_OPTIONS */
68 if (hapd->conf->bss_load_update_period) {
69 *eid++ = WLAN_EID_BSS_LOAD;
70 *eid++ = 5;
71 WPA_PUT_LE16(eid, hapd->num_sta);
72 eid += 2;
73 *eid++ = hapd->iface->channel_utilization;
74 WPA_PUT_LE16(eid, 0); /* no available admission capabity */
75 eid += 2;
76 }
77 return eid;
78 }
79
80
81 static u8 ieee802_11_erp_info(struct hostapd_data *hapd)
82 {
83 u8 erp = 0;
84
85 if (hapd->iface->current_mode == NULL ||
86 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
87 return 0;
88
89 if (hapd->iface->olbc)
90 erp |= ERP_INFO_USE_PROTECTION;
91 if (hapd->iface->num_sta_non_erp > 0) {
92 erp |= ERP_INFO_NON_ERP_PRESENT |
93 ERP_INFO_USE_PROTECTION;
94 }
95 if (hapd->iface->num_sta_no_short_preamble > 0 ||
96 hapd->iconf->preamble == LONG_PREAMBLE)
97 erp |= ERP_INFO_BARKER_PREAMBLE_MODE;
98
99 return erp;
100 }
101
102
103 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid)
104 {
105 *eid++ = WLAN_EID_DS_PARAMS;
106 *eid++ = 1;
107 *eid++ = hapd->iconf->channel;
108 return eid;
109 }
110
111
112 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid)
113 {
114 if (hapd->iface->current_mode == NULL ||
115 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
116 return eid;
117
118 /* Set NonERP_present and use_protection bits if there
119 * are any associated NonERP stations. */
120 /* TODO: use_protection bit can be set to zero even if
121 * there are NonERP stations present. This optimization
122 * might be useful if NonERP stations are "quiet".
123 * See 802.11g/D6 E-1 for recommended practice.
124 * In addition, Non ERP present might be set, if AP detects Non ERP
125 * operation on other APs. */
126
127 /* Add ERP Information element */
128 *eid++ = WLAN_EID_ERP_INFO;
129 *eid++ = 1;
130 *eid++ = ieee802_11_erp_info(hapd);
131
132 return eid;
133 }
134
135
136 static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid)
137 {
138 u8 *pos = eid;
139 u8 local_pwr_constraint = 0;
140 int dfs;
141
142 if (hapd->iface->current_mode == NULL ||
143 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A)
144 return eid;
145
146 /* Let host drivers add this IE if DFS support is offloaded */
147 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
148 return eid;
149
150 /*
151 * There is no DFS support and power constraint was not directly
152 * requested by config option.
153 */
154 if (!hapd->iconf->ieee80211h &&
155 hapd->iconf->local_pwr_constraint == -1)
156 return eid;
157
158 /* Check if DFS is required by regulatory. */
159 dfs = hostapd_is_dfs_required(hapd->iface);
160 if (dfs < 0) {
161 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
162 dfs);
163 dfs = 0;
164 }
165
166 if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1)
167 return eid;
168
169 /*
170 * ieee80211h (DFS) is enabled so Power Constraint element shall
171 * be added when running on DFS channel whenever local_pwr_constraint
172 * is configured or not. In order to meet regulations when TPC is not
173 * implemented using a transmit power that is below the legal maximum
174 * (including any mitigation factor) should help. In this case,
175 * indicate 3 dB below maximum allowed transmit power.
176 */
177 if (hapd->iconf->local_pwr_constraint == -1)
178 local_pwr_constraint = 3;
179
180 /*
181 * A STA that is not an AP shall use a transmit power less than or
182 * equal to the local maximum transmit power level for the channel.
183 * The local maximum transmit power can be calculated from the formula:
184 * local max TX pwr = max TX pwr - local pwr constraint
185 * Where max TX pwr is maximum transmit power level specified for
186 * channel in Country element and local pwr constraint is specified
187 * for channel in this Power Constraint element.
188 */
189
190 /* Element ID */
191 *pos++ = WLAN_EID_PWR_CONSTRAINT;
192 /* Length */
193 *pos++ = 1;
194 /* Local Power Constraint */
195 if (local_pwr_constraint)
196 *pos++ = local_pwr_constraint;
197 else
198 *pos++ = hapd->iconf->local_pwr_constraint;
199
200 return pos;
201 }
202
203
204 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing,
205 struct hostapd_channel_data *start,
206 struct hostapd_channel_data *prev)
207 {
208 if (end - pos < 3)
209 return pos;
210
211 /* first channel number */
212 *pos++ = start->chan;
213 /* number of channels */
214 *pos++ = (prev->chan - start->chan) / chan_spacing + 1;
215 /* maximum transmit power level */
216 *pos++ = start->max_tx_power;
217
218 return pos;
219 }
220
221
222 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid,
223 int max_len)
224 {
225 u8 *pos = eid;
226 u8 *end = eid + max_len;
227 int i;
228 struct hostapd_hw_modes *mode;
229 struct hostapd_channel_data *start, *prev;
230 int chan_spacing = 1;
231
232 if (!hapd->iconf->ieee80211d || max_len < 6 ||
233 hapd->iface->current_mode == NULL)
234 return eid;
235
236 *pos++ = WLAN_EID_COUNTRY;
237 pos++; /* length will be set later */
238 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */
239 pos += 3;
240
241 mode = hapd->iface->current_mode;
242 if (mode->mode == HOSTAPD_MODE_IEEE80211A)
243 chan_spacing = 4;
244
245 start = prev = NULL;
246 for (i = 0; i < mode->num_channels; i++) {
247 struct hostapd_channel_data *chan = &mode->channels[i];
248 if (chan->flag & HOSTAPD_CHAN_DISABLED)
249 continue;
250 if (start && prev &&
251 prev->chan + chan_spacing == chan->chan &&
252 start->max_tx_power == chan->max_tx_power) {
253 prev = chan;
254 continue; /* can use same entry */
255 }
256
257 if (start && prev) {
258 pos = hostapd_eid_country_add(pos, end, chan_spacing,
259 start, prev);
260 start = NULL;
261 }
262
263 /* Start new group */
264 start = prev = chan;
265 }
266
267 if (start) {
268 pos = hostapd_eid_country_add(pos, end, chan_spacing,
269 start, prev);
270 }
271
272 if ((pos - eid) & 1) {
273 if (end - pos < 1)
274 return eid;
275 *pos++ = 0; /* pad for 16-bit alignment */
276 }
277
278 eid[1] = (pos - eid) - 2;
279
280 return pos;
281 }
282
283
284 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len)
285 {
286 const u8 *ie;
287 size_t ielen;
288
289 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
290 if (ie == NULL || ielen > len)
291 return eid;
292
293 os_memcpy(eid, ie, ielen);
294 return eid + ielen;
295 }
296
297
298 static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid)
299 {
300 #ifdef CONFIG_TESTING_OPTIONS
301 if (hapd->iface->cs_oper_class && hapd->iconf->ecsa_ie_only)
302 return eid;
303 #endif /* CONFIG_TESTING_OPTIONS */
304
305 if (!hapd->cs_freq_params.channel)
306 return eid;
307
308 *eid++ = WLAN_EID_CHANNEL_SWITCH;
309 *eid++ = 3;
310 *eid++ = hapd->cs_block_tx;
311 *eid++ = hapd->cs_freq_params.channel;
312 *eid++ = hapd->cs_count;
313
314 return eid;
315 }
316
317
318 static u8 * hostapd_eid_ecsa(struct hostapd_data *hapd, u8 *eid)
319 {
320 if (!hapd->cs_freq_params.channel || !hapd->iface->cs_oper_class)
321 return eid;
322
323 *eid++ = WLAN_EID_EXT_CHANSWITCH_ANN;
324 *eid++ = 4;
325 *eid++ = hapd->cs_block_tx;
326 *eid++ = hapd->iface->cs_oper_class;
327 *eid++ = hapd->cs_freq_params.channel;
328 *eid++ = hapd->cs_count;
329
330 return eid;
331 }
332
333
334 static u8 * hostapd_eid_supported_op_classes(struct hostapd_data *hapd, u8 *eid)
335 {
336 u8 op_class, channel;
337
338 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA) ||
339 !hapd->iface->freq)
340 return eid;
341
342 if (ieee80211_freq_to_channel_ext(hapd->iface->freq,
343 hapd->iconf->secondary_channel,
344 hapd->iconf->vht_oper_chwidth,
345 &op_class, &channel) ==
346 NUM_HOSTAPD_MODES)
347 return eid;
348
349 *eid++ = WLAN_EID_SUPPORTED_OPERATING_CLASSES;
350 *eid++ = 2;
351
352 /* Current Operating Class */
353 *eid++ = op_class;
354
355 /* TODO: Advertise all the supported operating classes */
356 *eid++ = 0;
357
358 return eid;
359 }
360
361
362 static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
363 const struct ieee80211_mgmt *req,
364 int is_p2p, size_t *resp_len)
365 {
366 struct ieee80211_mgmt *resp;
367 u8 *pos, *epos, *csa_pos;
368 size_t buflen;
369
370 #define MAX_PROBERESP_LEN 768
371 buflen = MAX_PROBERESP_LEN;
372 #ifdef CONFIG_WPS
373 if (hapd->wps_probe_resp_ie)
374 buflen += wpabuf_len(hapd->wps_probe_resp_ie);
375 #endif /* CONFIG_WPS */
376 #ifdef CONFIG_P2P
377 if (hapd->p2p_probe_resp_ie)
378 buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
379 #endif /* CONFIG_P2P */
380 #ifdef CONFIG_FST
381 if (hapd->iface->fst_ies)
382 buflen += wpabuf_len(hapd->iface->fst_ies);
383 #endif /* CONFIG_FST */
384 if (hapd->conf->vendor_elements)
385 buflen += wpabuf_len(hapd->conf->vendor_elements);
386 if (hapd->conf->vendor_vht) {
387 buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
388 2 + sizeof(struct ieee80211_vht_operation);
389 }
390
391 buflen += hostapd_mbo_ie_len(hapd);
392
393 resp = os_zalloc(buflen);
394 if (resp == NULL)
395 return NULL;
396
397 epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
398
399 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
400 WLAN_FC_STYPE_PROBE_RESP);
401 if (req)
402 os_memcpy(resp->da, req->sa, ETH_ALEN);
403 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
404
405 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
406 resp->u.probe_resp.beacon_int =
407 host_to_le16(hapd->iconf->beacon_int);
408
409 /* hardware or low-level driver will setup seq_ctrl and timestamp */
410 resp->u.probe_resp.capab_info =
411 host_to_le16(hostapd_own_capab_info(hapd));
412
413 pos = resp->u.probe_resp.variable;
414 *pos++ = WLAN_EID_SSID;
415 *pos++ = hapd->conf->ssid.ssid_len;
416 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
417 pos += hapd->conf->ssid.ssid_len;
418
419 /* Supported rates */
420 pos = hostapd_eid_supp_rates(hapd, pos);
421
422 /* DS Params */
423 pos = hostapd_eid_ds_params(hapd, pos);
424
425 pos = hostapd_eid_country(hapd, pos, epos - pos);
426
427 /* Power Constraint element */
428 pos = hostapd_eid_pwr_constraint(hapd, pos);
429
430 /* CSA IE */
431 csa_pos = hostapd_eid_csa(hapd, pos);
432 if (csa_pos != pos)
433 hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1;
434 pos = csa_pos;
435
436 /* ERP Information element */
437 pos = hostapd_eid_erp_info(hapd, pos);
438
439 /* Extended supported rates */
440 pos = hostapd_eid_ext_supp_rates(hapd, pos);
441
442 /* RSN, MDIE, WPA */
443 pos = hostapd_eid_wpa(hapd, pos, epos - pos);
444
445 pos = hostapd_eid_bss_load(hapd, pos, epos - pos);
446
447 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos);
448
449 /* eCSA IE */
450 csa_pos = hostapd_eid_ecsa(hapd, pos);
451 if (csa_pos != pos)
452 hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1;
453 pos = csa_pos;
454
455 pos = hostapd_eid_supported_op_classes(hapd, pos);
456
457 #ifdef CONFIG_IEEE80211N
458 /* Secondary Channel Offset element */
459 /* TODO: The standard doesn't specify a position for this element. */
460 pos = hostapd_eid_secondary_channel(hapd, pos);
461
462 pos = hostapd_eid_ht_capabilities(hapd, pos);
463 pos = hostapd_eid_ht_operation(hapd, pos);
464 #endif /* CONFIG_IEEE80211N */
465
466 pos = hostapd_eid_ext_capab(hapd, pos);
467
468 pos = hostapd_eid_time_adv(hapd, pos);
469 pos = hostapd_eid_time_zone(hapd, pos);
470
471 pos = hostapd_eid_interworking(hapd, pos);
472 pos = hostapd_eid_adv_proto(hapd, pos);
473 pos = hostapd_eid_roaming_consortium(hapd, pos);
474
475 #ifdef CONFIG_FST
476 if (hapd->iface->fst_ies) {
477 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies),
478 wpabuf_len(hapd->iface->fst_ies));
479 pos += wpabuf_len(hapd->iface->fst_ies);
480 }
481 #endif /* CONFIG_FST */
482
483 #ifdef CONFIG_IEEE80211AC
484 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
485 pos = hostapd_eid_vht_capabilities(hapd, pos);
486 pos = hostapd_eid_vht_operation(hapd, pos);
487 pos = hostapd_eid_txpower_envelope(hapd, pos);
488 pos = hostapd_eid_wb_chsw_wrapper(hapd, pos);
489 }
490 if (hapd->conf->vendor_vht)
491 pos = hostapd_eid_vendor_vht(hapd, pos);
492 #endif /* CONFIG_IEEE80211AC */
493
494 /* Wi-Fi Alliance WMM */
495 pos = hostapd_eid_wmm(hapd, pos);
496
497 #ifdef CONFIG_WPS
498 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
499 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
500 wpabuf_len(hapd->wps_probe_resp_ie));
501 pos += wpabuf_len(hapd->wps_probe_resp_ie);
502 }
503 #endif /* CONFIG_WPS */
504
505 #ifdef CONFIG_P2P
506 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
507 hapd->p2p_probe_resp_ie) {
508 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
509 wpabuf_len(hapd->p2p_probe_resp_ie));
510 pos += wpabuf_len(hapd->p2p_probe_resp_ie);
511 }
512 #endif /* CONFIG_P2P */
513 #ifdef CONFIG_P2P_MANAGER
514 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
515 P2P_MANAGE)
516 pos = hostapd_eid_p2p_manage(hapd, pos);
517 #endif /* CONFIG_P2P_MANAGER */
518
519 #ifdef CONFIG_HS20
520 pos = hostapd_eid_hs20_indication(hapd, pos);
521 pos = hostapd_eid_osen(hapd, pos);
522 #endif /* CONFIG_HS20 */
523
524 pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos);
525
526 if (hapd->conf->vendor_elements) {
527 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
528 wpabuf_len(hapd->conf->vendor_elements));
529 pos += wpabuf_len(hapd->conf->vendor_elements);
530 }
531
532 *resp_len = pos - (u8 *) resp;
533 return (u8 *) resp;
534 }
535
536
537 enum ssid_match_result {
538 NO_SSID_MATCH,
539 EXACT_SSID_MATCH,
540 WILDCARD_SSID_MATCH
541 };
542
543 static enum ssid_match_result ssid_match(struct hostapd_data *hapd,
544 const u8 *ssid, size_t ssid_len,
545 const u8 *ssid_list,
546 size_t ssid_list_len)
547 {
548 const u8 *pos, *end;
549 int wildcard = 0;
550
551 if (ssid_len == 0)
552 wildcard = 1;
553 if (ssid_len == hapd->conf->ssid.ssid_len &&
554 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0)
555 return EXACT_SSID_MATCH;
556
557 if (ssid_list == NULL)
558 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
559
560 pos = ssid_list;
561 end = ssid_list + ssid_list_len;
562 while (end - pos >= 1) {
563 if (2 + pos[1] > end - pos)
564 break;
565 if (pos[1] == 0)
566 wildcard = 1;
567 if (pos[1] == hapd->conf->ssid.ssid_len &&
568 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0)
569 return EXACT_SSID_MATCH;
570 pos += 2 + pos[1];
571 }
572
573 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
574 }
575
576
577 void sta_track_expire(struct hostapd_iface *iface, int force)
578 {
579 struct os_reltime now;
580 struct hostapd_sta_info *info;
581
582 if (!iface->num_sta_seen)
583 return;
584
585 os_get_reltime(&now);
586 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
587 list))) {
588 if (!force &&
589 !os_reltime_expired(&now, &info->last_seen,
590 iface->conf->track_sta_max_age))
591 break;
592 force = 0;
593
594 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for "
595 MACSTR, iface->bss[0]->conf->iface,
596 MAC2STR(info->addr));
597 dl_list_del(&info->list);
598 iface->num_sta_seen--;
599 os_free(info);
600 }
601 }
602
603
604 static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface,
605 const u8 *addr)
606 {
607 struct hostapd_sta_info *info;
608
609 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list)
610 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0)
611 return info;
612
613 return NULL;
614 }
615
616
617 void sta_track_add(struct hostapd_iface *iface, const u8 *addr)
618 {
619 struct hostapd_sta_info *info;
620
621 info = sta_track_get(iface, addr);
622 if (info) {
623 /* Move the most recent entry to the end of the list */
624 dl_list_del(&info->list);
625 dl_list_add_tail(&iface->sta_seen, &info->list);
626 os_get_reltime(&info->last_seen);
627 return;
628 }
629
630 /* Add a new entry */
631 info = os_zalloc(sizeof(*info));
632 os_memcpy(info->addr, addr, ETH_ALEN);
633 os_get_reltime(&info->last_seen);
634
635 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) {
636 /* Expire oldest entry to make room for a new one */
637 sta_track_expire(iface, 1);
638 }
639
640 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for "
641 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr));
642 dl_list_add_tail(&iface->sta_seen, &info->list);
643 iface->num_sta_seen++;
644 }
645
646
647 struct hostapd_data *
648 sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr,
649 const char *ifname)
650 {
651 struct hapd_interfaces *interfaces = iface->interfaces;
652 size_t i, j;
653
654 for (i = 0; i < interfaces->count; i++) {
655 struct hostapd_data *hapd = NULL;
656
657 iface = interfaces->iface[i];
658 for (j = 0; j < iface->num_bss; j++) {
659 hapd = iface->bss[j];
660 if (os_strcmp(ifname, hapd->conf->iface) == 0)
661 break;
662 hapd = NULL;
663 }
664
665 if (hapd && sta_track_get(iface, addr))
666 return hapd;
667 }
668
669 return NULL;
670 }
671
672
673 void handle_probe_req(struct hostapd_data *hapd,
674 const struct ieee80211_mgmt *mgmt, size_t len,
675 int ssi_signal)
676 {
677 u8 *resp;
678 struct ieee802_11_elems elems;
679 const u8 *ie;
680 size_t ie_len;
681 size_t i, resp_len;
682 int noack;
683 enum ssid_match_result res;
684 int ret;
685 u16 csa_offs[2];
686 size_t csa_offs_len;
687
688 if (len < IEEE80211_HDRLEN)
689 return;
690 ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN;
691 if (hapd->iconf->track_sta_max_num)
692 sta_track_add(hapd->iface, mgmt->sa);
693 ie_len = len - IEEE80211_HDRLEN;
694
695 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
696 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
697 mgmt->sa, mgmt->da, mgmt->bssid,
698 ie, ie_len, ssi_signal) > 0)
699 return;
700
701 if (!hapd->iconf->send_probe_response)
702 return;
703
704 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
705 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
706 MAC2STR(mgmt->sa));
707 return;
708 }
709
710 if ((!elems.ssid || !elems.supp_rates)) {
711 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
712 "without SSID or supported rates element",
713 MAC2STR(mgmt->sa));
714 return;
715 }
716
717 /*
718 * No need to reply if the Probe Request frame was sent on an adjacent
719 * channel. IEEE Std 802.11-2012 describes this as a requirement for an
720 * AP with dot11RadioMeasurementActivated set to true, but strictly
721 * speaking does not allow such ignoring of Probe Request frames if
722 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce
723 * number of unnecessary Probe Response frames for cases where the STA
724 * is less likely to see them (Probe Request frame sent on a
725 * neighboring, but partially overlapping, channel).
726 */
727 if (elems.ds_params &&
728 hapd->iface->current_mode &&
729 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
730 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
731 hapd->iconf->channel != elems.ds_params[0]) {
732 wpa_printf(MSG_DEBUG,
733 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
734 hapd->iconf->channel, elems.ds_params[0]);
735 return;
736 }
737
738 #ifdef CONFIG_P2P
739 if (hapd->p2p && hapd->p2p_group && elems.wps_ie) {
740 struct wpabuf *wps;
741 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
742 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
743 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
744 "due to mismatch with Requested Device "
745 "Type");
746 wpabuf_free(wps);
747 return;
748 }
749 wpabuf_free(wps);
750 }
751
752 if (hapd->p2p && hapd->p2p_group && elems.p2p) {
753 struct wpabuf *p2p;
754 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE);
755 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) {
756 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
757 "due to mismatch with Device ID");
758 wpabuf_free(p2p);
759 return;
760 }
761 wpabuf_free(p2p);
762 }
763 #endif /* CONFIG_P2P */
764
765 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 &&
766 elems.ssid_list_len == 0) {
767 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
768 "broadcast SSID ignored", MAC2STR(mgmt->sa));
769 return;
770 }
771
772 #ifdef CONFIG_P2P
773 if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
774 elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
775 os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
776 P2P_WILDCARD_SSID_LEN) == 0) {
777 /* Process P2P Wildcard SSID like Wildcard SSID */
778 elems.ssid_len = 0;
779 }
780 #endif /* CONFIG_P2P */
781
782 res = ssid_match(hapd, elems.ssid, elems.ssid_len,
783 elems.ssid_list, elems.ssid_list_len);
784 if (res == NO_SSID_MATCH) {
785 if (!(mgmt->da[0] & 0x01)) {
786 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
787 " for foreign SSID '%s' (DA " MACSTR ")%s",
788 MAC2STR(mgmt->sa),
789 wpa_ssid_txt(elems.ssid, elems.ssid_len),
790 MAC2STR(mgmt->da),
791 elems.ssid_list ? " (SSID list)" : "");
792 }
793 return;
794 }
795
796 #ifdef CONFIG_INTERWORKING
797 if (hapd->conf->interworking &&
798 elems.interworking && elems.interworking_len >= 1) {
799 u8 ant = elems.interworking[0] & 0x0f;
800 if (ant != INTERWORKING_ANT_WILDCARD &&
801 ant != hapd->conf->access_network_type) {
802 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
803 " for mismatching ANT %u ignored",
804 MAC2STR(mgmt->sa), ant);
805 return;
806 }
807 }
808
809 if (hapd->conf->interworking && elems.interworking &&
810 (elems.interworking_len == 7 || elems.interworking_len == 9)) {
811 const u8 *hessid;
812 if (elems.interworking_len == 7)
813 hessid = elems.interworking + 1;
814 else
815 hessid = elems.interworking + 1 + 2;
816 if (!is_broadcast_ether_addr(hessid) &&
817 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
818 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
819 " for mismatching HESSID " MACSTR
820 " ignored",
821 MAC2STR(mgmt->sa), MAC2STR(hessid));
822 return;
823 }
824 }
825 #endif /* CONFIG_INTERWORKING */
826
827 #ifdef CONFIG_P2P
828 if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
829 supp_rates_11b_only(&elems)) {
830 /* Indicates support for 11b rates only */
831 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from "
832 MACSTR " with only 802.11b rates",
833 MAC2STR(mgmt->sa));
834 return;
835 }
836 #endif /* CONFIG_P2P */
837
838 /* TODO: verify that supp_rates contains at least one matching rate
839 * with AP configuration */
840
841 if (hapd->conf->no_probe_resp_if_seen_on &&
842 is_multicast_ether_addr(mgmt->da) &&
843 is_multicast_ether_addr(mgmt->bssid) &&
844 sta_track_seen_on(hapd->iface, mgmt->sa,
845 hapd->conf->no_probe_resp_if_seen_on)) {
846 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
847 " since STA has been seen on %s",
848 hapd->conf->iface, MAC2STR(mgmt->sa),
849 hapd->conf->no_probe_resp_if_seen_on);
850 return;
851 }
852
853 if (hapd->conf->no_probe_resp_if_max_sta &&
854 is_multicast_ether_addr(mgmt->da) &&
855 is_multicast_ether_addr(mgmt->bssid) &&
856 hapd->num_sta >= hapd->conf->max_num_sta &&
857 !ap_get_sta(hapd, mgmt->sa)) {
858 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
859 " since no room for additional STA",
860 hapd->conf->iface, MAC2STR(mgmt->sa));
861 return;
862 }
863
864 #ifdef CONFIG_TESTING_OPTIONS
865 if (hapd->iconf->ignore_probe_probability > 0.0 &&
866 drand48() < hapd->iconf->ignore_probe_probability) {
867 wpa_printf(MSG_INFO,
868 "TESTING: ignoring probe request from " MACSTR,
869 MAC2STR(mgmt->sa));
870 return;
871 }
872 #endif /* CONFIG_TESTING_OPTIONS */
873
874 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL,
875 &resp_len);
876 if (resp == NULL)
877 return;
878
879 /*
880 * If this is a broadcast probe request, apply no ack policy to avoid
881 * excessive retries.
882 */
883 noack = !!(res == WILDCARD_SSID_MATCH &&
884 is_broadcast_ether_addr(mgmt->da));
885
886 csa_offs_len = 0;
887 if (hapd->csa_in_progress) {
888 if (hapd->cs_c_off_proberesp)
889 csa_offs[csa_offs_len++] =
890 hapd->cs_c_off_proberesp;
891
892 if (hapd->cs_c_off_ecsa_proberesp)
893 csa_offs[csa_offs_len++] =
894 hapd->cs_c_off_ecsa_proberesp;
895 }
896
897 ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack,
898 csa_offs_len ? csa_offs : NULL,
899 csa_offs_len);
900
901 if (ret < 0)
902 wpa_printf(MSG_INFO, "handle_probe_req: send failed");
903
904 os_free(resp);
905
906 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
907 "SSID", MAC2STR(mgmt->sa),
908 elems.ssid_len == 0 ? "broadcast" : "our");
909 }
910
911
912 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd,
913 size_t *resp_len)
914 {
915 /* check probe response offloading caps and print warnings */
916 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD))
917 return NULL;
918
919 #ifdef CONFIG_WPS
920 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie &&
921 (!(hapd->iface->probe_resp_offloads &
922 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS |
923 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2))))
924 wpa_printf(MSG_WARNING, "Device is trying to offload WPS "
925 "Probe Response while not supporting this");
926 #endif /* CONFIG_WPS */
927
928 #ifdef CONFIG_P2P
929 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie &&
930 !(hapd->iface->probe_resp_offloads &
931 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P))
932 wpa_printf(MSG_WARNING, "Device is trying to offload P2P "
933 "Probe Response while not supporting this");
934 #endif /* CONFIG_P2P */
935
936 if (hapd->conf->interworking &&
937 !(hapd->iface->probe_resp_offloads &
938 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING))
939 wpa_printf(MSG_WARNING, "Device is trying to offload "
940 "Interworking Probe Response while not supporting "
941 "this");
942
943 /* Generate a Probe Response template for the non-P2P case */
944 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len);
945 }
946
947 #endif /* NEED_AP_MLME */
948
949
950 int ieee802_11_build_ap_params(struct hostapd_data *hapd,
951 struct wpa_driver_ap_params *params)
952 {
953 struct ieee80211_mgmt *head = NULL;
954 u8 *tail = NULL;
955 size_t head_len = 0, tail_len = 0;
956 u8 *resp = NULL;
957 size_t resp_len = 0;
958 #ifdef NEED_AP_MLME
959 u16 capab_info;
960 u8 *pos, *tailpos, *csa_pos;
961
962 #define BEACON_HEAD_BUF_SIZE 256
963 #define BEACON_TAIL_BUF_SIZE 512
964 head = os_zalloc(BEACON_HEAD_BUF_SIZE);
965 tail_len = BEACON_TAIL_BUF_SIZE;
966 #ifdef CONFIG_WPS
967 if (hapd->conf->wps_state && hapd->wps_beacon_ie)
968 tail_len += wpabuf_len(hapd->wps_beacon_ie);
969 #endif /* CONFIG_WPS */
970 #ifdef CONFIG_P2P
971 if (hapd->p2p_beacon_ie)
972 tail_len += wpabuf_len(hapd->p2p_beacon_ie);
973 #endif /* CONFIG_P2P */
974 #ifdef CONFIG_FST
975 if (hapd->iface->fst_ies)
976 tail_len += wpabuf_len(hapd->iface->fst_ies);
977 #endif /* CONFIG_FST */
978 if (hapd->conf->vendor_elements)
979 tail_len += wpabuf_len(hapd->conf->vendor_elements);
980
981 #ifdef CONFIG_IEEE80211AC
982 if (hapd->conf->vendor_vht) {
983 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
984 2 + sizeof(struct ieee80211_vht_operation);
985 }
986 #endif /* CONFIG_IEEE80211AC */
987
988 tail_len += hostapd_mbo_ie_len(hapd);
989
990 tailpos = tail = os_malloc(tail_len);
991 if (head == NULL || tail == NULL) {
992 wpa_printf(MSG_ERROR, "Failed to set beacon data");
993 os_free(head);
994 os_free(tail);
995 return -1;
996 }
997
998 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
999 WLAN_FC_STYPE_BEACON);
1000 head->duration = host_to_le16(0);
1001 os_memset(head->da, 0xff, ETH_ALEN);
1002
1003 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
1004 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
1005 head->u.beacon.beacon_int =
1006 host_to_le16(hapd->iconf->beacon_int);
1007
1008 /* hardware or low-level driver will setup seq_ctrl and timestamp */
1009 capab_info = hostapd_own_capab_info(hapd);
1010 head->u.beacon.capab_info = host_to_le16(capab_info);
1011 pos = &head->u.beacon.variable[0];
1012
1013 /* SSID */
1014 *pos++ = WLAN_EID_SSID;
1015 if (hapd->conf->ignore_broadcast_ssid == 2) {
1016 /* clear the data, but keep the correct length of the SSID */
1017 *pos++ = hapd->conf->ssid.ssid_len;
1018 os_memset(pos, 0, hapd->conf->ssid.ssid_len);
1019 pos += hapd->conf->ssid.ssid_len;
1020 } else if (hapd->conf->ignore_broadcast_ssid) {
1021 *pos++ = 0; /* empty SSID */
1022 } else {
1023 *pos++ = hapd->conf->ssid.ssid_len;
1024 os_memcpy(pos, hapd->conf->ssid.ssid,
1025 hapd->conf->ssid.ssid_len);
1026 pos += hapd->conf->ssid.ssid_len;
1027 }
1028
1029 /* Supported rates */
1030 pos = hostapd_eid_supp_rates(hapd, pos);
1031
1032 /* DS Params */
1033 pos = hostapd_eid_ds_params(hapd, pos);
1034
1035 head_len = pos - (u8 *) head;
1036
1037 tailpos = hostapd_eid_country(hapd, tailpos,
1038 tail + BEACON_TAIL_BUF_SIZE - tailpos);
1039
1040 /* Power Constraint element */
1041 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos);
1042
1043 /* CSA IE */
1044 csa_pos = hostapd_eid_csa(hapd, tailpos);
1045 if (csa_pos != tailpos)
1046 hapd->cs_c_off_beacon = csa_pos - tail - 1;
1047 tailpos = csa_pos;
1048
1049 /* ERP Information element */
1050 tailpos = hostapd_eid_erp_info(hapd, tailpos);
1051
1052 /* Extended supported rates */
1053 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
1054
1055 /* RSN, MDIE, WPA */
1056 tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
1057 tailpos);
1058
1059 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos,
1060 tail + BEACON_TAIL_BUF_SIZE -
1061 tailpos);
1062
1063 tailpos = hostapd_eid_bss_load(hapd, tailpos,
1064 tail + BEACON_TAIL_BUF_SIZE - tailpos);
1065
1066 /* eCSA IE */
1067 csa_pos = hostapd_eid_ecsa(hapd, tailpos);
1068 if (csa_pos != tailpos)
1069 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1;
1070 tailpos = csa_pos;
1071
1072 tailpos = hostapd_eid_supported_op_classes(hapd, tailpos);
1073
1074 #ifdef CONFIG_IEEE80211N
1075 /* Secondary Channel Offset element */
1076 /* TODO: The standard doesn't specify a position for this element. */
1077 tailpos = hostapd_eid_secondary_channel(hapd, tailpos);
1078
1079 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
1080 tailpos = hostapd_eid_ht_operation(hapd, tailpos);
1081 #endif /* CONFIG_IEEE80211N */
1082
1083 tailpos = hostapd_eid_ext_capab(hapd, tailpos);
1084
1085 /*
1086 * TODO: Time Advertisement element should only be included in some
1087 * DTIM Beacon frames.
1088 */
1089 tailpos = hostapd_eid_time_adv(hapd, tailpos);
1090
1091 tailpos = hostapd_eid_interworking(hapd, tailpos);
1092 tailpos = hostapd_eid_adv_proto(hapd, tailpos);
1093 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
1094
1095 #ifdef CONFIG_FST
1096 if (hapd->iface->fst_ies) {
1097 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies),
1098 wpabuf_len(hapd->iface->fst_ies));
1099 tailpos += wpabuf_len(hapd->iface->fst_ies);
1100 }
1101 #endif /* CONFIG_FST */
1102
1103 #ifdef CONFIG_IEEE80211AC
1104 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
1105 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos);
1106 tailpos = hostapd_eid_vht_operation(hapd, tailpos);
1107 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos);
1108 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos);
1109 }
1110 if (hapd->conf->vendor_vht)
1111 tailpos = hostapd_eid_vendor_vht(hapd, tailpos);
1112 #endif /* CONFIG_IEEE80211AC */
1113
1114 /* Wi-Fi Alliance WMM */
1115 tailpos = hostapd_eid_wmm(hapd, tailpos);
1116
1117 #ifdef CONFIG_WPS
1118 if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
1119 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
1120 wpabuf_len(hapd->wps_beacon_ie));
1121 tailpos += wpabuf_len(hapd->wps_beacon_ie);
1122 }
1123 #endif /* CONFIG_WPS */
1124
1125 #ifdef CONFIG_P2P
1126 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
1127 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
1128 wpabuf_len(hapd->p2p_beacon_ie));
1129 tailpos += wpabuf_len(hapd->p2p_beacon_ie);
1130 }
1131 #endif /* CONFIG_P2P */
1132 #ifdef CONFIG_P2P_MANAGER
1133 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
1134 P2P_MANAGE)
1135 tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
1136 #endif /* CONFIG_P2P_MANAGER */
1137
1138 #ifdef CONFIG_HS20
1139 tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
1140 tailpos = hostapd_eid_osen(hapd, tailpos);
1141 #endif /* CONFIG_HS20 */
1142
1143 tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos);
1144
1145 if (hapd->conf->vendor_elements) {
1146 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
1147 wpabuf_len(hapd->conf->vendor_elements));
1148 tailpos += wpabuf_len(hapd->conf->vendor_elements);
1149 }
1150
1151 tail_len = tailpos > tail ? tailpos - tail : 0;
1152
1153 resp = hostapd_probe_resp_offloads(hapd, &resp_len);
1154 #endif /* NEED_AP_MLME */
1155
1156 os_memset(params, 0, sizeof(*params));
1157 params->head = (u8 *) head;
1158 params->head_len = head_len;
1159 params->tail = tail;
1160 params->tail_len = tail_len;
1161 params->proberesp = resp;
1162 params->proberesp_len = resp_len;
1163 params->dtim_period = hapd->conf->dtim_period;
1164 params->beacon_int = hapd->iconf->beacon_int;
1165 params->basic_rates = hapd->iface->basic_rates;
1166 params->ssid = hapd->conf->ssid.ssid;
1167 params->ssid_len = hapd->conf->ssid.ssid_len;
1168 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) ==
1169 (WPA_PROTO_WPA | WPA_PROTO_RSN))
1170 params->pairwise_ciphers = hapd->conf->wpa_pairwise |
1171 hapd->conf->rsn_pairwise;
1172 else if (hapd->conf->wpa & WPA_PROTO_RSN)
1173 params->pairwise_ciphers = hapd->conf->rsn_pairwise;
1174 else if (hapd->conf->wpa & WPA_PROTO_WPA)
1175 params->pairwise_ciphers = hapd->conf->wpa_pairwise;
1176 params->group_cipher = hapd->conf->wpa_group;
1177 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt;
1178 params->auth_algs = hapd->conf->auth_algs;
1179 params->wpa_version = hapd->conf->wpa;
1180 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
1181 (hapd->conf->ieee802_1x &&
1182 (hapd->conf->default_wep_key_len ||
1183 hapd->conf->individual_wep_key_len));
1184 switch (hapd->conf->ignore_broadcast_ssid) {
1185 case 0:
1186 params->hide_ssid = NO_SSID_HIDING;
1187 break;
1188 case 1:
1189 params->hide_ssid = HIDDEN_SSID_ZERO_LEN;
1190 break;
1191 case 2:
1192 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
1193 break;
1194 }
1195 params->isolate = hapd->conf->isolate;
1196 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK;
1197 #ifdef NEED_AP_MLME
1198 params->cts_protect = !!(ieee802_11_erp_info(hapd) &
1199 ERP_INFO_USE_PROTECTION);
1200 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
1201 hapd->iconf->preamble == SHORT_PREAMBLE;
1202 if (hapd->iface->current_mode &&
1203 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1204 params->short_slot_time =
1205 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
1206 else
1207 params->short_slot_time = -1;
1208 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
1209 params->ht_opmode = -1;
1210 else
1211 params->ht_opmode = hapd->iface->ht_op_mode;
1212 #endif /* NEED_AP_MLME */
1213 params->interworking = hapd->conf->interworking;
1214 if (hapd->conf->interworking &&
1215 !is_zero_ether_addr(hapd->conf->hessid))
1216 params->hessid = hapd->conf->hessid;
1217 params->access_network_type = hapd->conf->access_network_type;
1218 params->ap_max_inactivity = hapd->conf->ap_max_inactivity;
1219 #ifdef CONFIG_P2P
1220 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow;
1221 #endif /* CONFIG_P2P */
1222 #ifdef CONFIG_HS20
1223 params->disable_dgaf = hapd->conf->disable_dgaf;
1224 if (hapd->conf->osen) {
1225 params->privacy = 1;
1226 params->osen = 1;
1227 }
1228 #endif /* CONFIG_HS20 */
1229 params->pbss = hapd->conf->pbss;
1230 return 0;
1231 }
1232
1233
1234 void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params)
1235 {
1236 os_free(params->tail);
1237 params->tail = NULL;
1238 os_free(params->head);
1239 params->head = NULL;
1240 os_free(params->proberesp);
1241 params->proberesp = NULL;
1242 }
1243
1244
1245 int ieee802_11_set_beacon(struct hostapd_data *hapd)
1246 {
1247 struct wpa_driver_ap_params params;
1248 struct hostapd_freq_params freq;
1249 struct hostapd_iface *iface = hapd->iface;
1250 struct hostapd_config *iconf = iface->conf;
1251 struct wpabuf *beacon, *proberesp, *assocresp;
1252 int res, ret = -1;
1253
1254 if (hapd->csa_in_progress) {
1255 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period");
1256 return -1;
1257 }
1258
1259 hapd->beacon_set_done = 1;
1260
1261 if (ieee802_11_build_ap_params(hapd, &params) < 0)
1262 return -1;
1263
1264 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) <
1265 0)
1266 goto fail;
1267
1268 params.beacon_ies = beacon;
1269 params.proberesp_ies = proberesp;
1270 params.assocresp_ies = assocresp;
1271 params.reenable = hapd->reenable_beacon;
1272 hapd->reenable_beacon = 0;
1273
1274 if (iface->current_mode &&
1275 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq,
1276 iconf->channel, iconf->ieee80211n,
1277 iconf->ieee80211ac,
1278 iconf->secondary_channel,
1279 iconf->vht_oper_chwidth,
1280 iconf->vht_oper_centr_freq_seg0_idx,
1281 iconf->vht_oper_centr_freq_seg1_idx,
1282 iface->current_mode->vht_capab) == 0)
1283 params.freq = &freq;
1284
1285 res = hostapd_drv_set_ap(hapd, &params);
1286 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
1287 if (res)
1288 wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
1289 else
1290 ret = 0;
1291 fail:
1292 ieee802_11_free_ap_params(&params);
1293 return ret;
1294 }
1295
1296
1297 int ieee802_11_set_beacons(struct hostapd_iface *iface)
1298 {
1299 size_t i;
1300 int ret = 0;
1301
1302 for (i = 0; i < iface->num_bss; i++) {
1303 if (iface->bss[i]->started &&
1304 ieee802_11_set_beacon(iface->bss[i]) < 0)
1305 ret = -1;
1306 }
1307
1308 return ret;
1309 }
1310
1311
1312 /* only update beacons if started */
1313 int ieee802_11_update_beacons(struct hostapd_iface *iface)
1314 {
1315 size_t i;
1316 int ret = 0;
1317
1318 for (i = 0; i < iface->num_bss; i++) {
1319 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started &&
1320 ieee802_11_set_beacon(iface->bss[i]) < 0)
1321 ret = -1;
1322 }
1323
1324 return ret;
1325 }
1326
1327 #endif /* CONFIG_NATIVE_WINDOWS */
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