1 /*
2 * hostapd / Initialization and configuration
3 * Copyright (c) 2002-2019, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "utils/eloop.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/wpa_ctrl.h"
15 #include "common/hw_features_common.h"
16 #include "radius/radius_client.h"
17 #include "radius/radius_das.h"
18 #include "eap_server/tncs.h"
19 #include "eapol_auth/eapol_auth_sm.h"
20 #include "eapol_auth/eapol_auth_sm_i.h"
21 #include "fst/fst.h"
22 #include "hostapd.h"
23 #include "authsrv.h"
24 #include "sta_info.h"
25 #include "accounting.h"
26 #include "ap_list.h"
27 #include "beacon.h"
28 #include "iapp.h"
29 #include "ieee802_1x.h"
30 #include "ieee802_11_auth.h"
31 #include "vlan_init.h"
32 #include "wpa_auth.h"
33 #include "wps_hostapd.h"
34 #include "dpp_hostapd.h"
35 #include "gas_query_ap.h"
36 #include "hw_features.h"
37 #include "wpa_auth_glue.h"
38 #include "ap_drv_ops.h"
39 #include "ap_config.h"
40 #include "p2p_hostapd.h"
41 #include "gas_serv.h"
42 #include "dfs.h"
43 #include "ieee802_11.h"
44 #include "bss_load.h"
45 #include "x_snoop.h"
46 #include "dhcp_snoop.h"
47 #include "ndisc_snoop.h"
48 #include "neighbor_db.h"
49 #include "rrm.h"
50 #include "fils_hlp.h"
51 #include "acs.h"
52 #include "hs20.h"
53
54
55 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
56 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
57 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
58 static int setup_interface2(struct hostapd_iface *iface);
59 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
60 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
61 void *timeout_ctx);
62
63
hostapd_for_each_interface(struct hapd_interfaces * interfaces,int (* cb)(struct hostapd_iface * iface,void * ctx),void * ctx)64 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
65 int (*cb)(struct hostapd_iface *iface,
66 void *ctx), void *ctx)
67 {
68 size_t i;
69 int ret;
70
71 for (i = 0; i < interfaces->count; i++) {
72 ret = cb(interfaces->iface[i], ctx);
73 if (ret)
74 return ret;
75 }
76
77 return 0;
78 }
79
80
hostapd_reconfig_encryption(struct hostapd_data * hapd)81 void hostapd_reconfig_encryption(struct hostapd_data *hapd)
82 {
83 if (hapd->wpa_auth)
84 return;
85
86 hostapd_set_privacy(hapd, 0);
87 hostapd_setup_encryption(hapd->conf->iface, hapd);
88 }
89
90
hostapd_reload_bss(struct hostapd_data * hapd)91 static void hostapd_reload_bss(struct hostapd_data *hapd)
92 {
93 struct hostapd_ssid *ssid;
94
95 if (!hapd->started)
96 return;
97
98 if (hapd->conf->wmm_enabled < 0)
99 hapd->conf->wmm_enabled = hapd->iconf->ieee80211n;
100
101 #ifndef CONFIG_NO_RADIUS
102 radius_client_reconfig(hapd->radius, hapd->conf->radius);
103 #endif /* CONFIG_NO_RADIUS */
104
105 ssid = &hapd->conf->ssid;
106 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
107 ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
108 /*
109 * Force PSK to be derived again since SSID or passphrase may
110 * have changed.
111 */
112 hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
113 }
114 if (hostapd_setup_wpa_psk(hapd->conf)) {
115 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
116 "after reloading configuration");
117 }
118
119 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
120 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
121 else
122 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
123
124 if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
125 hostapd_setup_wpa(hapd);
126 if (hapd->wpa_auth)
127 wpa_init_keys(hapd->wpa_auth);
128 } else if (hapd->conf->wpa) {
129 const u8 *wpa_ie;
130 size_t wpa_ie_len;
131 hostapd_reconfig_wpa(hapd);
132 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
133 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
134 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
135 "the kernel driver.");
136 } else if (hapd->wpa_auth) {
137 wpa_deinit(hapd->wpa_auth);
138 hapd->wpa_auth = NULL;
139 hostapd_set_privacy(hapd, 0);
140 hostapd_setup_encryption(hapd->conf->iface, hapd);
141 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
142 }
143
144 ieee802_11_set_beacon(hapd);
145 hostapd_update_wps(hapd);
146
147 if (hapd->conf->ssid.ssid_set &&
148 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
149 hapd->conf->ssid.ssid_len)) {
150 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
151 /* try to continue */
152 }
153 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
154 }
155
156
hostapd_clear_old(struct hostapd_iface * iface)157 static void hostapd_clear_old(struct hostapd_iface *iface)
158 {
159 size_t j;
160
161 /*
162 * Deauthenticate all stations since the new configuration may not
163 * allow them to use the BSS anymore.
164 */
165 for (j = 0; j < iface->num_bss; j++) {
166 hostapd_flush_old_stations(iface->bss[j],
167 WLAN_REASON_PREV_AUTH_NOT_VALID);
168 hostapd_broadcast_wep_clear(iface->bss[j]);
169
170 #ifndef CONFIG_NO_RADIUS
171 /* TODO: update dynamic data based on changed configuration
172 * items (e.g., open/close sockets, etc.) */
173 radius_client_flush(iface->bss[j]->radius, 0);
174 #endif /* CONFIG_NO_RADIUS */
175 }
176 }
177
178
hostapd_iface_conf_changed(struct hostapd_config * newconf,struct hostapd_config * oldconf)179 static int hostapd_iface_conf_changed(struct hostapd_config *newconf,
180 struct hostapd_config *oldconf)
181 {
182 size_t i;
183
184 if (newconf->num_bss != oldconf->num_bss)
185 return 1;
186
187 for (i = 0; i < newconf->num_bss; i++) {
188 if (os_strcmp(newconf->bss[i]->iface,
189 oldconf->bss[i]->iface) != 0)
190 return 1;
191 }
192
193 return 0;
194 }
195
196
hostapd_reload_config(struct hostapd_iface * iface)197 int hostapd_reload_config(struct hostapd_iface *iface)
198 {
199 struct hapd_interfaces *interfaces = iface->interfaces;
200 struct hostapd_data *hapd = iface->bss[0];
201 struct hostapd_config *newconf, *oldconf;
202 size_t j;
203
204 if (iface->config_fname == NULL) {
205 /* Only in-memory config in use - assume it has been updated */
206 hostapd_clear_old(iface);
207 for (j = 0; j < iface->num_bss; j++)
208 hostapd_reload_bss(iface->bss[j]);
209 return 0;
210 }
211
212 if (iface->interfaces == NULL ||
213 iface->interfaces->config_read_cb == NULL)
214 return -1;
215 newconf = iface->interfaces->config_read_cb(iface->config_fname);
216 if (newconf == NULL)
217 return -1;
218
219 hostapd_clear_old(iface);
220
221 oldconf = hapd->iconf;
222 if (hostapd_iface_conf_changed(newconf, oldconf)) {
223 char *fname;
224 int res;
225
226 wpa_printf(MSG_DEBUG,
227 "Configuration changes include interface/BSS modification - force full disable+enable sequence");
228 fname = os_strdup(iface->config_fname);
229 if (!fname) {
230 hostapd_config_free(newconf);
231 return -1;
232 }
233 hostapd_remove_iface(interfaces, hapd->conf->iface);
234 iface = hostapd_init(interfaces, fname);
235 os_free(fname);
236 hostapd_config_free(newconf);
237 if (!iface) {
238 wpa_printf(MSG_ERROR,
239 "Failed to initialize interface on config reload");
240 return -1;
241 }
242 iface->interfaces = interfaces;
243 interfaces->iface[interfaces->count] = iface;
244 interfaces->count++;
245 res = hostapd_enable_iface(iface);
246 if (res < 0)
247 wpa_printf(MSG_ERROR,
248 "Failed to enable interface on config reload");
249 return res;
250 }
251 iface->conf = newconf;
252
253 for (j = 0; j < iface->num_bss; j++) {
254 hapd = iface->bss[j];
255 hapd->iconf = newconf;
256 hapd->iconf->channel = oldconf->channel;
257 hapd->iconf->acs = oldconf->acs;
258 hapd->iconf->secondary_channel = oldconf->secondary_channel;
259 hapd->iconf->ieee80211n = oldconf->ieee80211n;
260 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
261 hapd->iconf->ht_capab = oldconf->ht_capab;
262 hapd->iconf->vht_capab = oldconf->vht_capab;
263 hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth;
264 hapd->iconf->vht_oper_centr_freq_seg0_idx =
265 oldconf->vht_oper_centr_freq_seg0_idx;
266 hapd->iconf->vht_oper_centr_freq_seg1_idx =
267 oldconf->vht_oper_centr_freq_seg1_idx;
268 hapd->conf = newconf->bss[j];
269 hostapd_reload_bss(hapd);
270 }
271
272 hostapd_config_free(oldconf);
273
274
275 return 0;
276 }
277
278
hostapd_broadcast_key_clear_iface(struct hostapd_data * hapd,const char * ifname)279 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
280 const char *ifname)
281 {
282 int i;
283
284 if (!ifname || !hapd->drv_priv)
285 return;
286 for (i = 0; i < NUM_WEP_KEYS; i++) {
287 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
288 0, NULL, 0, NULL, 0)) {
289 wpa_printf(MSG_DEBUG, "Failed to clear default "
290 "encryption keys (ifname=%s keyidx=%d)",
291 ifname, i);
292 }
293 }
294 #ifdef CONFIG_IEEE80211W
295 if (hapd->conf->ieee80211w) {
296 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
297 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
298 NULL, i, 0, NULL,
299 0, NULL, 0)) {
300 wpa_printf(MSG_DEBUG, "Failed to clear "
301 "default mgmt encryption keys "
302 "(ifname=%s keyidx=%d)", ifname, i);
303 }
304 }
305 }
306 #endif /* CONFIG_IEEE80211W */
307 }
308
309
hostapd_broadcast_wep_clear(struct hostapd_data * hapd)310 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
311 {
312 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
313 return 0;
314 }
315
316
hostapd_broadcast_wep_set(struct hostapd_data * hapd)317 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
318 {
319 int errors = 0, idx;
320 struct hostapd_ssid *ssid = &hapd->conf->ssid;
321
322 idx = ssid->wep.idx;
323 if (ssid->wep.default_len &&
324 hostapd_drv_set_key(hapd->conf->iface,
325 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
326 1, NULL, 0, ssid->wep.key[idx],
327 ssid->wep.len[idx])) {
328 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
329 errors++;
330 }
331
332 return errors;
333 }
334
335
hostapd_free_hapd_data(struct hostapd_data * hapd)336 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
337 {
338 os_free(hapd->probereq_cb);
339 hapd->probereq_cb = NULL;
340 hapd->num_probereq_cb = 0;
341
342 #ifdef CONFIG_P2P
343 wpabuf_free(hapd->p2p_beacon_ie);
344 hapd->p2p_beacon_ie = NULL;
345 wpabuf_free(hapd->p2p_probe_resp_ie);
346 hapd->p2p_probe_resp_ie = NULL;
347 #endif /* CONFIG_P2P */
348
349 if (!hapd->started) {
350 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
351 __func__, hapd->conf ? hapd->conf->iface : "N/A");
352 return;
353 }
354 hapd->started = 0;
355 hapd->beacon_set_done = 0;
356
357 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
358 iapp_deinit(hapd->iapp);
359 hapd->iapp = NULL;
360 accounting_deinit(hapd);
361 hostapd_deinit_wpa(hapd);
362 vlan_deinit(hapd);
363 hostapd_acl_deinit(hapd);
364 #ifndef CONFIG_NO_RADIUS
365 radius_client_deinit(hapd->radius);
366 hapd->radius = NULL;
367 radius_das_deinit(hapd->radius_das);
368 hapd->radius_das = NULL;
369 #endif /* CONFIG_NO_RADIUS */
370
371 hostapd_deinit_wps(hapd);
372 #ifdef CONFIG_DPP
373 hostapd_dpp_deinit(hapd);
374 gas_query_ap_deinit(hapd->gas);
375 #endif /* CONFIG_DPP */
376
377 authsrv_deinit(hapd);
378
379 if (hapd->interface_added) {
380 hapd->interface_added = 0;
381 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
382 wpa_printf(MSG_WARNING,
383 "Failed to remove BSS interface %s",
384 hapd->conf->iface);
385 hapd->interface_added = 1;
386 } else {
387 /*
388 * Since this was a dynamically added interface, the
389 * driver wrapper may have removed its internal instance
390 * and hapd->drv_priv is not valid anymore.
391 */
392 hapd->drv_priv = NULL;
393 }
394 }
395
396 wpabuf_free(hapd->time_adv);
397
398 #ifdef CONFIG_INTERWORKING
399 gas_serv_deinit(hapd);
400 #endif /* CONFIG_INTERWORKING */
401
402 bss_load_update_deinit(hapd);
403 ndisc_snoop_deinit(hapd);
404 dhcp_snoop_deinit(hapd);
405 x_snoop_deinit(hapd);
406
407 #ifdef CONFIG_SQLITE
408 bin_clear_free(hapd->tmp_eap_user.identity,
409 hapd->tmp_eap_user.identity_len);
410 bin_clear_free(hapd->tmp_eap_user.password,
411 hapd->tmp_eap_user.password_len);
412 #endif /* CONFIG_SQLITE */
413
414 #ifdef CONFIG_MESH
415 wpabuf_free(hapd->mesh_pending_auth);
416 hapd->mesh_pending_auth = NULL;
417 #endif /* CONFIG_MESH */
418
419 hostapd_clean_rrm(hapd);
420 fils_hlp_deinit(hapd);
421
422 #ifdef CONFIG_SAE
423 {
424 struct hostapd_sae_commit_queue *q;
425
426 while ((q = dl_list_first(&hapd->sae_commit_queue,
427 struct hostapd_sae_commit_queue,
428 list))) {
429 dl_list_del(&q->list);
430 os_free(q);
431 }
432 }
433 eloop_cancel_timeout(auth_sae_process_commit, hapd, NULL);
434 #endif /* CONFIG_SAE */
435 }
436
437
438 /**
439 * hostapd_cleanup - Per-BSS cleanup (deinitialization)
440 * @hapd: Pointer to BSS data
441 *
442 * This function is used to free all per-BSS data structures and resources.
443 * Most of the modules that are initialized in hostapd_setup_bss() are
444 * deinitialized here.
445 */
hostapd_cleanup(struct hostapd_data * hapd)446 static void hostapd_cleanup(struct hostapd_data *hapd)
447 {
448 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
449 hapd->conf ? hapd->conf->iface : "N/A");
450 if (hapd->iface->interfaces &&
451 hapd->iface->interfaces->ctrl_iface_deinit) {
452 wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_TERMINATING);
453 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
454 }
455 hostapd_free_hapd_data(hapd);
456 }
457
458
sta_track_deinit(struct hostapd_iface * iface)459 static void sta_track_deinit(struct hostapd_iface *iface)
460 {
461 struct hostapd_sta_info *info;
462
463 if (!iface->num_sta_seen)
464 return;
465
466 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
467 list))) {
468 dl_list_del(&info->list);
469 iface->num_sta_seen--;
470 sta_track_del(info);
471 }
472 }
473
474
hostapd_cleanup_iface_partial(struct hostapd_iface * iface)475 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
476 {
477 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
478 #ifdef CONFIG_IEEE80211N
479 #ifdef NEED_AP_MLME
480 hostapd_stop_setup_timers(iface);
481 #endif /* NEED_AP_MLME */
482 #endif /* CONFIG_IEEE80211N */
483 if (iface->current_mode)
484 acs_cleanup(iface);
485 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
486 iface->hw_features = NULL;
487 iface->current_mode = NULL;
488 os_free(iface->current_rates);
489 iface->current_rates = NULL;
490 os_free(iface->basic_rates);
491 iface->basic_rates = NULL;
492 ap_list_deinit(iface);
493 sta_track_deinit(iface);
494 }
495
496
497 /**
498 * hostapd_cleanup_iface - Complete per-interface cleanup
499 * @iface: Pointer to interface data
500 *
501 * This function is called after per-BSS data structures are deinitialized
502 * with hostapd_cleanup().
503 */
hostapd_cleanup_iface(struct hostapd_iface * iface)504 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
505 {
506 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
507 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
508 eloop_cancel_timeout(hostapd_interface_setup_failure_handler, iface,
509 NULL);
510
511 hostapd_cleanup_iface_partial(iface);
512 hostapd_config_free(iface->conf);
513 iface->conf = NULL;
514
515 os_free(iface->config_fname);
516 os_free(iface->bss);
517 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
518 os_free(iface);
519 }
520
521
hostapd_clear_wep(struct hostapd_data * hapd)522 static void hostapd_clear_wep(struct hostapd_data *hapd)
523 {
524 if (hapd->drv_priv && !hapd->iface->driver_ap_teardown && hapd->conf) {
525 hostapd_set_privacy(hapd, 0);
526 hostapd_broadcast_wep_clear(hapd);
527 }
528 }
529
530
hostapd_setup_encryption(char * iface,struct hostapd_data * hapd)531 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
532 {
533 int i;
534
535 hostapd_broadcast_wep_set(hapd);
536
537 if (hapd->conf->ssid.wep.default_len) {
538 hostapd_set_privacy(hapd, 1);
539 return 0;
540 }
541
542 /*
543 * When IEEE 802.1X is not enabled, the driver may need to know how to
544 * set authentication algorithms for static WEP.
545 */
546 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
547
548 for (i = 0; i < 4; i++) {
549 if (hapd->conf->ssid.wep.key[i] &&
550 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
551 i == hapd->conf->ssid.wep.idx, NULL, 0,
552 hapd->conf->ssid.wep.key[i],
553 hapd->conf->ssid.wep.len[i])) {
554 wpa_printf(MSG_WARNING, "Could not set WEP "
555 "encryption.");
556 return -1;
557 }
558 if (hapd->conf->ssid.wep.key[i] &&
559 i == hapd->conf->ssid.wep.idx)
560 hostapd_set_privacy(hapd, 1);
561 }
562
563 return 0;
564 }
565
566
hostapd_flush_old_stations(struct hostapd_data * hapd,u16 reason)567 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
568 {
569 int ret = 0;
570 u8 addr[ETH_ALEN];
571
572 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
573 return 0;
574
575 if (!hapd->iface->driver_ap_teardown) {
576 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
577 "Flushing old station entries");
578
579 if (hostapd_flush(hapd)) {
580 wpa_msg(hapd->msg_ctx, MSG_WARNING,
581 "Could not connect to kernel driver");
582 ret = -1;
583 }
584 }
585 if (hapd->conf && hapd->conf->broadcast_deauth) {
586 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
587 "Deauthenticate all stations");
588 os_memset(addr, 0xff, ETH_ALEN);
589 hostapd_drv_sta_deauth(hapd, addr, reason);
590 }
591 hostapd_free_stas(hapd);
592
593 return ret;
594 }
595
596
hostapd_bss_deinit_no_free(struct hostapd_data * hapd)597 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
598 {
599 hostapd_free_stas(hapd);
600 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
601 hostapd_clear_wep(hapd);
602 }
603
604
605 /**
606 * hostapd_validate_bssid_configuration - Validate BSSID configuration
607 * @iface: Pointer to interface data
608 * Returns: 0 on success, -1 on failure
609 *
610 * This function is used to validate that the configured BSSIDs are valid.
611 */
hostapd_validate_bssid_configuration(struct hostapd_iface * iface)612 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
613 {
614 u8 mask[ETH_ALEN] = { 0 };
615 struct hostapd_data *hapd = iface->bss[0];
616 unsigned int i = iface->conf->num_bss, bits = 0, j;
617 int auto_addr = 0;
618
619 if (hostapd_drv_none(hapd))
620 return 0;
621
622 if (iface->conf->use_driver_iface_addr)
623 return 0;
624
625 /* Generate BSSID mask that is large enough to cover the BSSIDs. */
626
627 /* Determine the bits necessary to cover the number of BSSIDs. */
628 for (i--; i; i >>= 1)
629 bits++;
630
631 /* Determine the bits necessary to any configured BSSIDs,
632 if they are higher than the number of BSSIDs. */
633 for (j = 0; j < iface->conf->num_bss; j++) {
634 if (is_zero_ether_addr(iface->conf->bss[j]->bssid)) {
635 if (j)
636 auto_addr++;
637 continue;
638 }
639
640 for (i = 0; i < ETH_ALEN; i++) {
641 mask[i] |=
642 iface->conf->bss[j]->bssid[i] ^
643 hapd->own_addr[i];
644 }
645 }
646
647 if (!auto_addr)
648 goto skip_mask_ext;
649
650 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
651 ;
652 j = 0;
653 if (i < ETH_ALEN) {
654 j = (5 - i) * 8;
655
656 while (mask[i] != 0) {
657 mask[i] >>= 1;
658 j++;
659 }
660 }
661
662 if (bits < j)
663 bits = j;
664
665 if (bits > 40) {
666 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
667 bits);
668 return -1;
669 }
670
671 os_memset(mask, 0xff, ETH_ALEN);
672 j = bits / 8;
673 for (i = 5; i > 5 - j; i--)
674 mask[i] = 0;
675 j = bits % 8;
676 while (j) {
677 j--;
678 mask[i] <<= 1;
679 }
680
681 skip_mask_ext:
682 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
683 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
684
685 if (!auto_addr)
686 return 0;
687
688 for (i = 0; i < ETH_ALEN; i++) {
689 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
690 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
691 " for start address " MACSTR ".",
692 MAC2STR(mask), MAC2STR(hapd->own_addr));
693 wpa_printf(MSG_ERROR, "Start address must be the "
694 "first address in the block (i.e., addr "
695 "AND mask == addr).");
696 return -1;
697 }
698 }
699
700 return 0;
701 }
702
703
mac_in_conf(struct hostapd_config * conf,const void * a)704 static int mac_in_conf(struct hostapd_config *conf, const void *a)
705 {
706 size_t i;
707
708 for (i = 0; i < conf->num_bss; i++) {
709 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
710 return 1;
711 }
712 }
713
714 return 0;
715 }
716
717
718 #ifndef CONFIG_NO_RADIUS
719
hostapd_das_nas_mismatch(struct hostapd_data * hapd,struct radius_das_attrs * attr)720 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
721 struct radius_das_attrs *attr)
722 {
723 if (attr->nas_identifier &&
724 (!hapd->conf->nas_identifier ||
725 os_strlen(hapd->conf->nas_identifier) !=
726 attr->nas_identifier_len ||
727 os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
728 attr->nas_identifier_len) != 0)) {
729 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
730 return 1;
731 }
732
733 if (attr->nas_ip_addr &&
734 (hapd->conf->own_ip_addr.af != AF_INET ||
735 os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
736 0)) {
737 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
738 return 1;
739 }
740
741 #ifdef CONFIG_IPV6
742 if (attr->nas_ipv6_addr &&
743 (hapd->conf->own_ip_addr.af != AF_INET6 ||
744 os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
745 != 0)) {
746 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
747 return 1;
748 }
749 #endif /* CONFIG_IPV6 */
750
751 return 0;
752 }
753
754
hostapd_das_find_sta(struct hostapd_data * hapd,struct radius_das_attrs * attr,int * multi)755 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
756 struct radius_das_attrs *attr,
757 int *multi)
758 {
759 struct sta_info *selected, *sta;
760 char buf[128];
761 int num_attr = 0;
762 int count;
763
764 *multi = 0;
765
766 for (sta = hapd->sta_list; sta; sta = sta->next)
767 sta->radius_das_match = 1;
768
769 if (attr->sta_addr) {
770 num_attr++;
771 sta = ap_get_sta(hapd, attr->sta_addr);
772 if (!sta) {
773 wpa_printf(MSG_DEBUG,
774 "RADIUS DAS: No Calling-Station-Id match");
775 return NULL;
776 }
777
778 selected = sta;
779 for (sta = hapd->sta_list; sta; sta = sta->next) {
780 if (sta != selected)
781 sta->radius_das_match = 0;
782 }
783 wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
784 }
785
786 if (attr->acct_session_id) {
787 num_attr++;
788 if (attr->acct_session_id_len != 16) {
789 wpa_printf(MSG_DEBUG,
790 "RADIUS DAS: Acct-Session-Id cannot match");
791 return NULL;
792 }
793 count = 0;
794
795 for (sta = hapd->sta_list; sta; sta = sta->next) {
796 if (!sta->radius_das_match)
797 continue;
798 os_snprintf(buf, sizeof(buf), "%016llX",
799 (unsigned long long) sta->acct_session_id);
800 if (os_memcmp(attr->acct_session_id, buf, 16) != 0)
801 sta->radius_das_match = 0;
802 else
803 count++;
804 }
805
806 if (count == 0) {
807 wpa_printf(MSG_DEBUG,
808 "RADIUS DAS: No matches remaining after Acct-Session-Id check");
809 return NULL;
810 }
811 wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
812 }
813
814 if (attr->acct_multi_session_id) {
815 num_attr++;
816 if (attr->acct_multi_session_id_len != 16) {
817 wpa_printf(MSG_DEBUG,
818 "RADIUS DAS: Acct-Multi-Session-Id cannot match");
819 return NULL;
820 }
821 count = 0;
822
823 for (sta = hapd->sta_list; sta; sta = sta->next) {
824 if (!sta->radius_das_match)
825 continue;
826 if (!sta->eapol_sm ||
827 !sta->eapol_sm->acct_multi_session_id) {
828 sta->radius_das_match = 0;
829 continue;
830 }
831 os_snprintf(buf, sizeof(buf), "%016llX",
832 (unsigned long long)
833 sta->eapol_sm->acct_multi_session_id);
834 if (os_memcmp(attr->acct_multi_session_id, buf, 16) !=
835 0)
836 sta->radius_das_match = 0;
837 else
838 count++;
839 }
840
841 if (count == 0) {
842 wpa_printf(MSG_DEBUG,
843 "RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
844 return NULL;
845 }
846 wpa_printf(MSG_DEBUG,
847 "RADIUS DAS: Acct-Multi-Session-Id match");
848 }
849
850 if (attr->cui) {
851 num_attr++;
852 count = 0;
853
854 for (sta = hapd->sta_list; sta; sta = sta->next) {
855 struct wpabuf *cui;
856
857 if (!sta->radius_das_match)
858 continue;
859 cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
860 if (!cui || wpabuf_len(cui) != attr->cui_len ||
861 os_memcmp(wpabuf_head(cui), attr->cui,
862 attr->cui_len) != 0)
863 sta->radius_das_match = 0;
864 else
865 count++;
866 }
867
868 if (count == 0) {
869 wpa_printf(MSG_DEBUG,
870 "RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
871 return NULL;
872 }
873 wpa_printf(MSG_DEBUG,
874 "RADIUS DAS: Chargeable-User-Identity match");
875 }
876
877 if (attr->user_name) {
878 num_attr++;
879 count = 0;
880
881 for (sta = hapd->sta_list; sta; sta = sta->next) {
882 u8 *identity;
883 size_t identity_len;
884
885 if (!sta->radius_das_match)
886 continue;
887 identity = ieee802_1x_get_identity(sta->eapol_sm,
888 &identity_len);
889 if (!identity ||
890 identity_len != attr->user_name_len ||
891 os_memcmp(identity, attr->user_name, identity_len)
892 != 0)
893 sta->radius_das_match = 0;
894 else
895 count++;
896 }
897
898 if (count == 0) {
899 wpa_printf(MSG_DEBUG,
900 "RADIUS DAS: No matches remaining after User-Name check");
901 return NULL;
902 }
903 wpa_printf(MSG_DEBUG,
904 "RADIUS DAS: User-Name match");
905 }
906
907 if (num_attr == 0) {
908 /*
909 * In theory, we could match all current associations, but it
910 * seems safer to just reject requests that do not include any
911 * session identification attributes.
912 */
913 wpa_printf(MSG_DEBUG,
914 "RADIUS DAS: No session identification attributes included");
915 return NULL;
916 }
917
918 selected = NULL;
919 for (sta = hapd->sta_list; sta; sta = sta->next) {
920 if (sta->radius_das_match) {
921 if (selected) {
922 *multi = 1;
923 return NULL;
924 }
925 selected = sta;
926 }
927 }
928
929 return selected;
930 }
931
932
hostapd_das_disconnect_pmksa(struct hostapd_data * hapd,struct radius_das_attrs * attr)933 static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
934 struct radius_das_attrs *attr)
935 {
936 if (!hapd->wpa_auth)
937 return -1;
938 return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
939 }
940
941
942 static enum radius_das_res
hostapd_das_disconnect(void * ctx,struct radius_das_attrs * attr)943 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
944 {
945 struct hostapd_data *hapd = ctx;
946 struct sta_info *sta;
947 int multi;
948
949 if (hostapd_das_nas_mismatch(hapd, attr))
950 return RADIUS_DAS_NAS_MISMATCH;
951
952 sta = hostapd_das_find_sta(hapd, attr, &multi);
953 if (sta == NULL) {
954 if (multi) {
955 wpa_printf(MSG_DEBUG,
956 "RADIUS DAS: Multiple sessions match - not supported");
957 return RADIUS_DAS_MULTI_SESSION_MATCH;
958 }
959 if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
960 wpa_printf(MSG_DEBUG,
961 "RADIUS DAS: PMKSA cache entry matched");
962 return RADIUS_DAS_SUCCESS;
963 }
964 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
965 return RADIUS_DAS_SESSION_NOT_FOUND;
966 }
967
968 wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
969 " - disconnecting", MAC2STR(sta->addr));
970 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
971
972 hostapd_drv_sta_deauth(hapd, sta->addr,
973 WLAN_REASON_PREV_AUTH_NOT_VALID);
974 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
975
976 return RADIUS_DAS_SUCCESS;
977 }
978
979
980 #ifdef CONFIG_HS20
981 static enum radius_das_res
hostapd_das_coa(void * ctx,struct radius_das_attrs * attr)982 hostapd_das_coa(void *ctx, struct radius_das_attrs *attr)
983 {
984 struct hostapd_data *hapd = ctx;
985 struct sta_info *sta;
986 int multi;
987
988 if (hostapd_das_nas_mismatch(hapd, attr))
989 return RADIUS_DAS_NAS_MISMATCH;
990
991 sta = hostapd_das_find_sta(hapd, attr, &multi);
992 if (!sta) {
993 if (multi) {
994 wpa_printf(MSG_DEBUG,
995 "RADIUS DAS: Multiple sessions match - not supported");
996 return RADIUS_DAS_MULTI_SESSION_MATCH;
997 }
998 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
999 return RADIUS_DAS_SESSION_NOT_FOUND;
1000 }
1001
1002 wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
1003 " - CoA", MAC2STR(sta->addr));
1004
1005 if (attr->hs20_t_c_filtering) {
1006 if (attr->hs20_t_c_filtering[0] & BIT(0)) {
1007 wpa_printf(MSG_DEBUG,
1008 "HS 2.0: Unexpected Terms and Conditions filtering required in CoA-Request");
1009 return RADIUS_DAS_COA_FAILED;
1010 }
1011
1012 hs20_t_c_filtering(hapd, sta, 0);
1013 }
1014
1015 return RADIUS_DAS_SUCCESS;
1016 }
1017 #else /* CONFIG_HS20 */
1018 #define hostapd_das_coa NULL
1019 #endif /* CONFIG_HS20 */
1020
1021 #endif /* CONFIG_NO_RADIUS */
1022
1023
1024 /**
1025 * hostapd_setup_bss - Per-BSS setup (initialization)
1026 * @hapd: Pointer to BSS data
1027 * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
1028 * but interface may exist
1029 *
1030 * This function is used to initialize all per-BSS data structures and
1031 * resources. This gets called in a loop for each BSS when an interface is
1032 * initialized. Most of the modules that are initialized here will be
1033 * deinitialized in hostapd_cleanup().
1034 */
hostapd_setup_bss(struct hostapd_data * hapd,int first)1035 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1036 {
1037 struct hostapd_bss_config *conf = hapd->conf;
1038 u8 ssid[SSID_MAX_LEN + 1];
1039 int ssid_len, set_ssid;
1040 char force_ifname[IFNAMSIZ];
1041 u8 if_addr[ETH_ALEN];
1042 int flush_old_stations = 1;
1043
1044 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
1045 __func__, hapd, conf->iface, first);
1046
1047 #ifdef EAP_SERVER_TNC
1048 if (conf->tnc && tncs_global_init() < 0) {
1049 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1050 return -1;
1051 }
1052 #endif /* EAP_SERVER_TNC */
1053
1054 if (hapd->started) {
1055 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
1056 __func__, conf->iface);
1057 return -1;
1058 }
1059 hapd->started = 1;
1060
1061 if (!first || first == -1) {
1062 u8 *addr = hapd->own_addr;
1063
1064 if (!is_zero_ether_addr(conf->bssid)) {
1065 /* Allocate the configured BSSID. */
1066 os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
1067
1068 if (hostapd_mac_comp(hapd->own_addr,
1069 hapd->iface->bss[0]->own_addr) ==
1070 0) {
1071 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1072 "BSSID set to the MAC address of "
1073 "the radio", conf->iface);
1074 return -1;
1075 }
1076 } else if (hapd->iconf->use_driver_iface_addr) {
1077 addr = NULL;
1078 } else {
1079 /* Allocate the next available BSSID. */
1080 do {
1081 inc_byte_array(hapd->own_addr, ETH_ALEN);
1082 } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1083 }
1084
1085 hapd->interface_added = 1;
1086 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
1087 conf->iface, addr, hapd,
1088 &hapd->drv_priv, force_ifname, if_addr,
1089 conf->bridge[0] ? conf->bridge : NULL,
1090 first == -1)) {
1091 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1092 MACSTR ")", MAC2STR(hapd->own_addr));
1093 hapd->interface_added = 0;
1094 return -1;
1095 }
1096
1097 if (!addr)
1098 os_memcpy(hapd->own_addr, if_addr, ETH_ALEN);
1099 }
1100
1101 if (conf->wmm_enabled < 0)
1102 conf->wmm_enabled = hapd->iconf->ieee80211n;
1103
1104 #ifdef CONFIG_IEEE80211R_AP
1105 if (is_zero_ether_addr(conf->r1_key_holder))
1106 os_memcpy(conf->r1_key_holder, hapd->own_addr, ETH_ALEN);
1107 #endif /* CONFIG_IEEE80211R_AP */
1108
1109 #ifdef CONFIG_MESH
1110 if ((hapd->conf->mesh & MESH_ENABLED) && hapd->iface->mconf == NULL)
1111 flush_old_stations = 0;
1112 #endif /* CONFIG_MESH */
1113
1114 if (flush_old_stations)
1115 hostapd_flush_old_stations(hapd,
1116 WLAN_REASON_PREV_AUTH_NOT_VALID);
1117 hostapd_set_privacy(hapd, 0);
1118
1119 hostapd_broadcast_wep_clear(hapd);
1120 if (hostapd_setup_encryption(conf->iface, hapd))
1121 return -1;
1122
1123 /*
1124 * Fetch the SSID from the system and use it or,
1125 * if one was specified in the config file, verify they
1126 * match.
1127 */
1128 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1129 if (ssid_len < 0) {
1130 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1131 return -1;
1132 }
1133 if (conf->ssid.ssid_set) {
1134 /*
1135 * If SSID is specified in the config file and it differs
1136 * from what is being used then force installation of the
1137 * new SSID.
1138 */
1139 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1140 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1141 } else {
1142 /*
1143 * No SSID in the config file; just use the one we got
1144 * from the system.
1145 */
1146 set_ssid = 0;
1147 conf->ssid.ssid_len = ssid_len;
1148 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1149 }
1150
1151 if (!hostapd_drv_none(hapd)) {
1152 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1153 " and ssid \"%s\"",
1154 conf->iface, MAC2STR(hapd->own_addr),
1155 wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
1156 }
1157
1158 if (hostapd_setup_wpa_psk(conf)) {
1159 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1160 return -1;
1161 }
1162
1163 /* Set SSID for the kernel driver (to be used in beacon and probe
1164 * response frames) */
1165 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
1166 conf->ssid.ssid_len)) {
1167 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1168 return -1;
1169 }
1170
1171 if (wpa_debug_level <= MSG_MSGDUMP)
1172 conf->radius->msg_dumps = 1;
1173 #ifndef CONFIG_NO_RADIUS
1174 hapd->radius = radius_client_init(hapd, conf->radius);
1175 if (hapd->radius == NULL) {
1176 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1177 return -1;
1178 }
1179
1180 if (conf->radius_das_port) {
1181 struct radius_das_conf das_conf;
1182 os_memset(&das_conf, 0, sizeof(das_conf));
1183 das_conf.port = conf->radius_das_port;
1184 das_conf.shared_secret = conf->radius_das_shared_secret;
1185 das_conf.shared_secret_len =
1186 conf->radius_das_shared_secret_len;
1187 das_conf.client_addr = &conf->radius_das_client_addr;
1188 das_conf.time_window = conf->radius_das_time_window;
1189 das_conf.require_event_timestamp =
1190 conf->radius_das_require_event_timestamp;
1191 das_conf.require_message_authenticator =
1192 conf->radius_das_require_message_authenticator;
1193 das_conf.ctx = hapd;
1194 das_conf.disconnect = hostapd_das_disconnect;
1195 das_conf.coa = hostapd_das_coa;
1196 hapd->radius_das = radius_das_init(&das_conf);
1197 if (hapd->radius_das == NULL) {
1198 wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
1199 "failed.");
1200 return -1;
1201 }
1202 }
1203 #endif /* CONFIG_NO_RADIUS */
1204
1205 if (hostapd_acl_init(hapd)) {
1206 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1207 return -1;
1208 }
1209 if (hostapd_init_wps(hapd, conf))
1210 return -1;
1211
1212 #ifdef CONFIG_DPP
1213 hapd->gas = gas_query_ap_init(hapd, hapd->msg_ctx);
1214 if (!hapd->gas)
1215 return -1;
1216 if (hostapd_dpp_init(hapd))
1217 return -1;
1218 #endif /* CONFIG_DPP */
1219
1220 if (authsrv_init(hapd) < 0)
1221 return -1;
1222
1223 if (ieee802_1x_init(hapd)) {
1224 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1225 return -1;
1226 }
1227
1228 if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
1229 return -1;
1230
1231 if (accounting_init(hapd)) {
1232 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1233 return -1;
1234 }
1235
1236 if (conf->ieee802_11f &&
1237 (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
1238 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1239 "failed.");
1240 return -1;
1241 }
1242
1243 #ifdef CONFIG_INTERWORKING
1244 if (gas_serv_init(hapd)) {
1245 wpa_printf(MSG_ERROR, "GAS server initialization failed");
1246 return -1;
1247 }
1248
1249 if (conf->qos_map_set_len &&
1250 hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
1251 conf->qos_map_set_len)) {
1252 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
1253 return -1;
1254 }
1255 #endif /* CONFIG_INTERWORKING */
1256
1257 if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
1258 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
1259 return -1;
1260 }
1261
1262 if (conf->proxy_arp) {
1263 if (x_snoop_init(hapd)) {
1264 wpa_printf(MSG_ERROR,
1265 "Generic snooping infrastructure initialization failed");
1266 return -1;
1267 }
1268
1269 if (dhcp_snoop_init(hapd)) {
1270 wpa_printf(MSG_ERROR,
1271 "DHCP snooping initialization failed");
1272 return -1;
1273 }
1274
1275 if (ndisc_snoop_init(hapd)) {
1276 wpa_printf(MSG_ERROR,
1277 "Neighbor Discovery snooping initialization failed");
1278 return -1;
1279 }
1280 }
1281
1282 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1283 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1284 return -1;
1285 }
1286
1287 if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
1288 return -1;
1289
1290 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
1291 return -1;
1292
1293 if (hapd->driver && hapd->driver->set_operstate)
1294 hapd->driver->set_operstate(hapd->drv_priv, 1);
1295
1296 return 0;
1297 }
1298
1299
hostapd_tx_queue_params(struct hostapd_iface * iface)1300 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1301 {
1302 struct hostapd_data *hapd = iface->bss[0];
1303 int i;
1304 struct hostapd_tx_queue_params *p;
1305
1306 #ifdef CONFIG_MESH
1307 if ((hapd->conf->mesh & MESH_ENABLED) && iface->mconf == NULL)
1308 return;
1309 #endif /* CONFIG_MESH */
1310
1311 for (i = 0; i < NUM_TX_QUEUES; i++) {
1312 p = &iface->conf->tx_queue[i];
1313
1314 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1315 p->cwmax, p->burst)) {
1316 wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1317 "parameters for queue %d.", i);
1318 /* Continue anyway */
1319 }
1320 }
1321 }
1322
1323
hostapd_set_acl_list(struct hostapd_data * hapd,struct mac_acl_entry * mac_acl,int n_entries,u8 accept_acl)1324 static int hostapd_set_acl_list(struct hostapd_data *hapd,
1325 struct mac_acl_entry *mac_acl,
1326 int n_entries, u8 accept_acl)
1327 {
1328 struct hostapd_acl_params *acl_params;
1329 int i, err;
1330
1331 acl_params = os_zalloc(sizeof(*acl_params) +
1332 (n_entries * sizeof(acl_params->mac_acl[0])));
1333 if (!acl_params)
1334 return -ENOMEM;
1335
1336 for (i = 0; i < n_entries; i++)
1337 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
1338 ETH_ALEN);
1339
1340 acl_params->acl_policy = accept_acl;
1341 acl_params->num_mac_acl = n_entries;
1342
1343 err = hostapd_drv_set_acl(hapd, acl_params);
1344
1345 os_free(acl_params);
1346
1347 return err;
1348 }
1349
1350
hostapd_set_acl(struct hostapd_data * hapd)1351 static void hostapd_set_acl(struct hostapd_data *hapd)
1352 {
1353 struct hostapd_config *conf = hapd->iconf;
1354 int err;
1355 u8 accept_acl;
1356
1357 if (hapd->iface->drv_max_acl_mac_addrs == 0)
1358 return;
1359
1360 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1361 accept_acl = 1;
1362 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1363 conf->bss[0]->num_accept_mac,
1364 accept_acl);
1365 if (err) {
1366 wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1367 return;
1368 }
1369 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1370 accept_acl = 0;
1371 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1372 conf->bss[0]->num_deny_mac,
1373 accept_acl);
1374 if (err) {
1375 wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1376 return;
1377 }
1378 }
1379 }
1380
1381
start_ctrl_iface_bss(struct hostapd_data * hapd)1382 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1383 {
1384 if (!hapd->iface->interfaces ||
1385 !hapd->iface->interfaces->ctrl_iface_init)
1386 return 0;
1387
1388 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1389 wpa_printf(MSG_ERROR,
1390 "Failed to setup control interface for %s",
1391 hapd->conf->iface);
1392 return -1;
1393 }
1394
1395 return 0;
1396 }
1397
1398
start_ctrl_iface(struct hostapd_iface * iface)1399 static int start_ctrl_iface(struct hostapd_iface *iface)
1400 {
1401 size_t i;
1402
1403 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1404 return 0;
1405
1406 for (i = 0; i < iface->num_bss; i++) {
1407 struct hostapd_data *hapd = iface->bss[i];
1408 if (iface->interfaces->ctrl_iface_init(hapd)) {
1409 wpa_printf(MSG_ERROR,
1410 "Failed to setup control interface for %s",
1411 hapd->conf->iface);
1412 return -1;
1413 }
1414 }
1415
1416 return 0;
1417 }
1418
1419
channel_list_update_timeout(void * eloop_ctx,void * timeout_ctx)1420 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1421 {
1422 struct hostapd_iface *iface = eloop_ctx;
1423
1424 if (!iface->wait_channel_update) {
1425 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1426 return;
1427 }
1428
1429 /*
1430 * It is possible that the existing channel list is acceptable, so try
1431 * to proceed.
1432 */
1433 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1434 setup_interface2(iface);
1435 }
1436
1437
hostapd_channel_list_updated(struct hostapd_iface * iface,int initiator)1438 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1439 {
1440 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1441 return;
1442
1443 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1444 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1445 setup_interface2(iface);
1446 }
1447
1448
setup_interface(struct hostapd_iface * iface)1449 static int setup_interface(struct hostapd_iface *iface)
1450 {
1451 struct hostapd_data *hapd = iface->bss[0];
1452 size_t i;
1453
1454 /*
1455 * It is possible that setup_interface() is called after the interface
1456 * was disabled etc., in which case driver_ap_teardown is possibly set
1457 * to 1. Clear it here so any other key/station deletion, which is not
1458 * part of a teardown flow, would also call the relevant driver
1459 * callbacks.
1460 */
1461 iface->driver_ap_teardown = 0;
1462
1463 if (!iface->phy[0]) {
1464 const char *phy = hostapd_drv_get_radio_name(hapd);
1465 if (phy) {
1466 wpa_printf(MSG_DEBUG, "phy: %s", phy);
1467 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1468 }
1469 }
1470
1471 /*
1472 * Make sure that all BSSes get configured with a pointer to the same
1473 * driver interface.
1474 */
1475 for (i = 1; i < iface->num_bss; i++) {
1476 iface->bss[i]->driver = hapd->driver;
1477 iface->bss[i]->drv_priv = hapd->drv_priv;
1478 }
1479
1480 if (hostapd_validate_bssid_configuration(iface))
1481 return -1;
1482
1483 /*
1484 * Initialize control interfaces early to allow external monitoring of
1485 * channel setup operations that may take considerable amount of time
1486 * especially for DFS cases.
1487 */
1488 if (start_ctrl_iface(iface))
1489 return -1;
1490
1491 if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1492 char country[4], previous_country[4];
1493
1494 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1495 if (hostapd_get_country(hapd, previous_country) < 0)
1496 previous_country[0] = '\0';
1497
1498 os_memcpy(country, hapd->iconf->country, 3);
1499 country[3] = '\0';
1500 if (hostapd_set_country(hapd, country) < 0) {
1501 wpa_printf(MSG_ERROR, "Failed to set country code");
1502 return -1;
1503 }
1504
1505 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1506 previous_country, country);
1507
1508 if (os_strncmp(previous_country, country, 2) != 0) {
1509 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1510 iface->wait_channel_update = 1;
1511 eloop_register_timeout(5, 0,
1512 channel_list_update_timeout,
1513 iface, NULL);
1514 return 0;
1515 }
1516 }
1517
1518 return setup_interface2(iface);
1519 }
1520
1521
setup_interface2(struct hostapd_iface * iface)1522 static int setup_interface2(struct hostapd_iface *iface)
1523 {
1524 iface->wait_channel_update = 0;
1525
1526 if (hostapd_get_hw_features(iface)) {
1527 /* Not all drivers support this yet, so continue without hw
1528 * feature data. */
1529 } else {
1530 int ret = hostapd_select_hw_mode(iface);
1531 if (ret < 0) {
1532 wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1533 "channel. (%d)", ret);
1534 goto fail;
1535 }
1536 if (ret == 1) {
1537 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1538 return 0;
1539 }
1540 ret = hostapd_check_ht_capab(iface);
1541 if (ret < 0)
1542 goto fail;
1543 if (ret == 1) {
1544 wpa_printf(MSG_DEBUG, "Interface initialization will "
1545 "be completed in a callback");
1546 return 0;
1547 }
1548
1549 if (iface->conf->ieee80211h)
1550 wpa_printf(MSG_DEBUG, "DFS support is enabled");
1551 }
1552 return hostapd_setup_interface_complete(iface, 0);
1553
1554 fail:
1555 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1556 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1557 if (iface->interfaces && iface->interfaces->terminate_on_error)
1558 eloop_terminate();
1559 return -1;
1560 }
1561
1562
1563 #ifdef CONFIG_FST
1564
fst_hostapd_get_bssid_cb(void * ctx)1565 static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
1566 {
1567 struct hostapd_data *hapd = ctx;
1568
1569 return hapd->own_addr;
1570 }
1571
1572
fst_hostapd_get_channel_info_cb(void * ctx,enum hostapd_hw_mode * hw_mode,u8 * channel)1573 static void fst_hostapd_get_channel_info_cb(void *ctx,
1574 enum hostapd_hw_mode *hw_mode,
1575 u8 *channel)
1576 {
1577 struct hostapd_data *hapd = ctx;
1578
1579 *hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
1580 }
1581
1582
fst_hostapd_set_ies_cb(void * ctx,const struct wpabuf * fst_ies)1583 static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
1584 {
1585 struct hostapd_data *hapd = ctx;
1586
1587 if (hapd->iface->fst_ies != fst_ies) {
1588 hapd->iface->fst_ies = fst_ies;
1589 if (ieee802_11_set_beacon(hapd))
1590 wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
1591 }
1592 }
1593
1594
fst_hostapd_send_action_cb(void * ctx,const u8 * da,struct wpabuf * buf)1595 static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
1596 struct wpabuf *buf)
1597 {
1598 struct hostapd_data *hapd = ctx;
1599
1600 return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
1601 wpabuf_head(buf), wpabuf_len(buf));
1602 }
1603
1604
fst_hostapd_get_mb_ie_cb(void * ctx,const u8 * addr)1605 static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
1606 {
1607 struct hostapd_data *hapd = ctx;
1608 struct sta_info *sta = ap_get_sta(hapd, addr);
1609
1610 return sta ? sta->mb_ies : NULL;
1611 }
1612
1613
fst_hostapd_update_mb_ie_cb(void * ctx,const u8 * addr,const u8 * buf,size_t size)1614 static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
1615 const u8 *buf, size_t size)
1616 {
1617 struct hostapd_data *hapd = ctx;
1618 struct sta_info *sta = ap_get_sta(hapd, addr);
1619
1620 if (sta) {
1621 struct mb_ies_info info;
1622
1623 if (!mb_ies_info_by_ies(&info, buf, size)) {
1624 wpabuf_free(sta->mb_ies);
1625 sta->mb_ies = mb_ies_by_info(&info);
1626 }
1627 }
1628 }
1629
1630
fst_hostapd_get_sta(struct fst_get_peer_ctx ** get_ctx,Boolean mb_only)1631 static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
1632 Boolean mb_only)
1633 {
1634 struct sta_info *s = (struct sta_info *) *get_ctx;
1635
1636 if (mb_only) {
1637 for (; s && !s->mb_ies; s = s->next)
1638 ;
1639 }
1640
1641 if (s) {
1642 *get_ctx = (struct fst_get_peer_ctx *) s->next;
1643
1644 return s->addr;
1645 }
1646
1647 *get_ctx = NULL;
1648 return NULL;
1649 }
1650
1651
fst_hostapd_get_peer_first(void * ctx,struct fst_get_peer_ctx ** get_ctx,Boolean mb_only)1652 static const u8 * fst_hostapd_get_peer_first(void *ctx,
1653 struct fst_get_peer_ctx **get_ctx,
1654 Boolean mb_only)
1655 {
1656 struct hostapd_data *hapd = ctx;
1657
1658 *get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
1659
1660 return fst_hostapd_get_sta(get_ctx, mb_only);
1661 }
1662
1663
fst_hostapd_get_peer_next(void * ctx,struct fst_get_peer_ctx ** get_ctx,Boolean mb_only)1664 static const u8 * fst_hostapd_get_peer_next(void *ctx,
1665 struct fst_get_peer_ctx **get_ctx,
1666 Boolean mb_only)
1667 {
1668 return fst_hostapd_get_sta(get_ctx, mb_only);
1669 }
1670
1671
fst_hostapd_fill_iface_obj(struct hostapd_data * hapd,struct fst_wpa_obj * iface_obj)1672 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
1673 struct fst_wpa_obj *iface_obj)
1674 {
1675 iface_obj->ctx = hapd;
1676 iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
1677 iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
1678 iface_obj->set_ies = fst_hostapd_set_ies_cb;
1679 iface_obj->send_action = fst_hostapd_send_action_cb;
1680 iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
1681 iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
1682 iface_obj->get_peer_first = fst_hostapd_get_peer_first;
1683 iface_obj->get_peer_next = fst_hostapd_get_peer_next;
1684 }
1685
1686 #endif /* CONFIG_FST */
1687
1688 #ifdef CONFIG_OWE
1689
hostapd_owe_iface_iter(struct hostapd_iface * iface,void * ctx)1690 static int hostapd_owe_iface_iter(struct hostapd_iface *iface, void *ctx)
1691 {
1692 struct hostapd_data *hapd = ctx;
1693 size_t i;
1694
1695 for (i = 0; i < iface->num_bss; i++) {
1696 struct hostapd_data *bss = iface->bss[i];
1697
1698 if (os_strcmp(hapd->conf->owe_transition_ifname,
1699 bss->conf->iface) != 0)
1700 continue;
1701
1702 wpa_printf(MSG_DEBUG,
1703 "OWE: ifname=%s found transition mode ifname=%s BSSID "
1704 MACSTR " SSID %s",
1705 hapd->conf->iface, bss->conf->iface,
1706 MAC2STR(bss->own_addr),
1707 wpa_ssid_txt(bss->conf->ssid.ssid,
1708 bss->conf->ssid.ssid_len));
1709 if (!bss->conf->ssid.ssid_set || !bss->conf->ssid.ssid_len ||
1710 is_zero_ether_addr(bss->own_addr))
1711 continue;
1712
1713 os_memcpy(hapd->conf->owe_transition_bssid, bss->own_addr,
1714 ETH_ALEN);
1715 os_memcpy(hapd->conf->owe_transition_ssid,
1716 bss->conf->ssid.ssid, bss->conf->ssid.ssid_len);
1717 hapd->conf->owe_transition_ssid_len = bss->conf->ssid.ssid_len;
1718 wpa_printf(MSG_DEBUG,
1719 "OWE: Copied transition mode information");
1720 return 1;
1721 }
1722
1723 return 0;
1724 }
1725
1726
hostapd_owe_trans_get_info(struct hostapd_data * hapd)1727 int hostapd_owe_trans_get_info(struct hostapd_data *hapd)
1728 {
1729 if (hapd->conf->owe_transition_ssid_len > 0 &&
1730 !is_zero_ether_addr(hapd->conf->owe_transition_bssid))
1731 return 0;
1732
1733 /* Find transition mode SSID/BSSID information from a BSS operated by
1734 * this hostapd instance. */
1735 if (!hapd->iface->interfaces ||
1736 !hapd->iface->interfaces->for_each_interface)
1737 return hostapd_owe_iface_iter(hapd->iface, hapd);
1738 else
1739 return hapd->iface->interfaces->for_each_interface(
1740 hapd->iface->interfaces, hostapd_owe_iface_iter, hapd);
1741 }
1742
1743
hostapd_owe_iface_iter2(struct hostapd_iface * iface,void * ctx)1744 static int hostapd_owe_iface_iter2(struct hostapd_iface *iface, void *ctx)
1745 {
1746 size_t i;
1747
1748 for (i = 0; i < iface->num_bss; i++) {
1749 struct hostapd_data *bss = iface->bss[i];
1750 int res;
1751
1752 if (!bss->conf->owe_transition_ifname[0])
1753 continue;
1754 res = hostapd_owe_trans_get_info(bss);
1755 if (res == 0)
1756 continue;
1757 wpa_printf(MSG_DEBUG,
1758 "OWE: Matching transition mode interface enabled - update beacon data for %s",
1759 bss->conf->iface);
1760 ieee802_11_set_beacon(bss);
1761 }
1762
1763 return 0;
1764 }
1765
1766 #endif /* CONFIG_OWE */
1767
1768
hostapd_owe_update_trans(struct hostapd_iface * iface)1769 static void hostapd_owe_update_trans(struct hostapd_iface *iface)
1770 {
1771 #ifdef CONFIG_OWE
1772 /* Check whether the enabled BSS can complete OWE transition mode
1773 * configuration for any pending interface. */
1774 if (!iface->interfaces ||
1775 !iface->interfaces->for_each_interface)
1776 hostapd_owe_iface_iter2(iface, NULL);
1777 else
1778 iface->interfaces->for_each_interface(
1779 iface->interfaces, hostapd_owe_iface_iter2, NULL);
1780 #endif /* CONFIG_OWE */
1781 }
1782
1783
hostapd_interface_setup_failure_handler(void * eloop_ctx,void * timeout_ctx)1784 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
1785 void *timeout_ctx)
1786 {
1787 struct hostapd_iface *iface = eloop_ctx;
1788 struct hostapd_data *hapd;
1789
1790 if (iface->num_bss < 1 || !iface->bss || !iface->bss[0])
1791 return;
1792 hapd = iface->bss[0];
1793 if (hapd->setup_complete_cb)
1794 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1795 }
1796
1797
hostapd_setup_interface_complete_sync(struct hostapd_iface * iface,int err)1798 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
1799 int err)
1800 {
1801 struct hostapd_data *hapd = iface->bss[0];
1802 size_t j;
1803 u8 *prev_addr;
1804 int delay_apply_cfg = 0;
1805 int res_dfs_offload = 0;
1806
1807 if (err)
1808 goto fail;
1809
1810 wpa_printf(MSG_DEBUG, "Completing interface initialization");
1811 if (iface->conf->channel) {
1812 #ifdef NEED_AP_MLME
1813 int res;
1814 #endif /* NEED_AP_MLME */
1815
1816 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1817 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1818 "Frequency: %d MHz",
1819 hostapd_hw_mode_txt(iface->conf->hw_mode),
1820 iface->conf->channel, iface->freq);
1821
1822 #ifdef NEED_AP_MLME
1823 /* Handle DFS only if it is not offloaded to the driver */
1824 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1825 /* Check DFS */
1826 res = hostapd_handle_dfs(iface);
1827 if (res <= 0) {
1828 if (res < 0)
1829 goto fail;
1830 return res;
1831 }
1832 } else {
1833 /* If DFS is offloaded to the driver */
1834 res_dfs_offload = hostapd_handle_dfs_offload(iface);
1835 if (res_dfs_offload <= 0) {
1836 if (res_dfs_offload < 0)
1837 goto fail;
1838 } else {
1839 wpa_printf(MSG_DEBUG,
1840 "Proceed with AP/channel setup");
1841 /*
1842 * If this is a DFS channel, move to completing
1843 * AP setup.
1844 */
1845 if (res_dfs_offload == 1)
1846 goto dfs_offload;
1847 /* Otherwise fall through. */
1848 }
1849 }
1850 #endif /* NEED_AP_MLME */
1851
1852 #ifdef CONFIG_MESH
1853 if (iface->mconf != NULL) {
1854 wpa_printf(MSG_DEBUG,
1855 "%s: Mesh configuration will be applied while joining the mesh network",
1856 iface->bss[0]->conf->iface);
1857 delay_apply_cfg = 1;
1858 }
1859 #endif /* CONFIG_MESH */
1860
1861 if (!delay_apply_cfg &&
1862 hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1863 hapd->iconf->channel,
1864 hapd->iconf->ieee80211n,
1865 hapd->iconf->ieee80211ac,
1866 hapd->iconf->secondary_channel,
1867 hapd->iconf->vht_oper_chwidth,
1868 hapd->iconf->vht_oper_centr_freq_seg0_idx,
1869 hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1870 wpa_printf(MSG_ERROR, "Could not set channel for "
1871 "kernel driver");
1872 goto fail;
1873 }
1874 }
1875
1876 if (iface->current_mode) {
1877 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1878 wpa_printf(MSG_ERROR, "Failed to prepare rates "
1879 "table.");
1880 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1881 HOSTAPD_LEVEL_WARNING,
1882 "Failed to prepare rates table.");
1883 goto fail;
1884 }
1885 }
1886
1887 if (hapd->iconf->rts_threshold >= -1 &&
1888 hostapd_set_rts(hapd, hapd->iconf->rts_threshold) &&
1889 hapd->iconf->rts_threshold >= -1) {
1890 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1891 "kernel driver");
1892 goto fail;
1893 }
1894
1895 if (hapd->iconf->fragm_threshold >= -1 &&
1896 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold) &&
1897 hapd->iconf->fragm_threshold != -1) {
1898 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1899 "for kernel driver");
1900 goto fail;
1901 }
1902
1903 prev_addr = hapd->own_addr;
1904
1905 for (j = 0; j < iface->num_bss; j++) {
1906 hapd = iface->bss[j];
1907 if (j)
1908 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1909 if (hostapd_setup_bss(hapd, j == 0)) {
1910 for (;;) {
1911 hapd = iface->bss[j];
1912 hostapd_bss_deinit_no_free(hapd);
1913 hostapd_free_hapd_data(hapd);
1914 if (j == 0)
1915 break;
1916 j--;
1917 }
1918 goto fail;
1919 }
1920 if (is_zero_ether_addr(hapd->conf->bssid))
1921 prev_addr = hapd->own_addr;
1922 }
1923 hapd = iface->bss[0];
1924
1925 hostapd_tx_queue_params(iface);
1926
1927 ap_list_init(iface);
1928
1929 hostapd_set_acl(hapd);
1930
1931 if (hostapd_driver_commit(hapd) < 0) {
1932 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1933 "configuration", __func__);
1934 goto fail;
1935 }
1936
1937 /*
1938 * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1939 * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1940 * mode), the interface is up only after driver_commit, so initialize
1941 * WPS after driver_commit.
1942 */
1943 for (j = 0; j < iface->num_bss; j++) {
1944 if (hostapd_init_wps_complete(iface->bss[j]))
1945 goto fail;
1946 }
1947
1948 if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
1949 !res_dfs_offload) {
1950 /*
1951 * If freq is DFS, and DFS is offloaded to the driver, then wait
1952 * for CAC to complete.
1953 */
1954 wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
1955 return res_dfs_offload;
1956 }
1957
1958 #ifdef NEED_AP_MLME
1959 dfs_offload:
1960 #endif /* NEED_AP_MLME */
1961
1962 #ifdef CONFIG_FST
1963 if (hapd->iconf->fst_cfg.group_id[0]) {
1964 struct fst_wpa_obj iface_obj;
1965
1966 fst_hostapd_fill_iface_obj(hapd, &iface_obj);
1967 iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
1968 &iface_obj, &hapd->iconf->fst_cfg);
1969 if (!iface->fst) {
1970 wpa_printf(MSG_ERROR, "Could not attach to FST %s",
1971 hapd->iconf->fst_cfg.group_id);
1972 goto fail;
1973 }
1974 }
1975 #endif /* CONFIG_FST */
1976
1977 hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1978 hostapd_owe_update_trans(iface);
1979 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1980 if (hapd->setup_complete_cb)
1981 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1982
1983 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1984 iface->bss[0]->conf->iface);
1985 if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1986 iface->interfaces->terminate_on_error--;
1987
1988 for (j = 0; j < iface->num_bss; j++)
1989 hostapd_neighbor_set_own_report(iface->bss[j]);
1990
1991 return 0;
1992
1993 fail:
1994 wpa_printf(MSG_ERROR, "Interface initialization failed");
1995 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1996 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1997 #ifdef CONFIG_FST
1998 if (iface->fst) {
1999 fst_detach(iface->fst);
2000 iface->fst = NULL;
2001 }
2002 #endif /* CONFIG_FST */
2003
2004 if (iface->interfaces && iface->interfaces->terminate_on_error) {
2005 eloop_terminate();
2006 } else if (hapd->setup_complete_cb) {
2007 /*
2008 * Calling hapd->setup_complete_cb directly may cause iface
2009 * deinitialization which may be accessed later by the caller.
2010 */
2011 eloop_register_timeout(0, 0,
2012 hostapd_interface_setup_failure_handler,
2013 iface, NULL);
2014 }
2015
2016 return -1;
2017 }
2018
2019
2020 /**
2021 * hostapd_setup_interface_complete - Complete interface setup
2022 *
2023 * This function is called when previous steps in the interface setup has been
2024 * completed. This can also start operations, e.g., DFS, that will require
2025 * additional processing before interface is ready to be enabled. Such
2026 * operations will call this function from eloop callbacks when finished.
2027 */
hostapd_setup_interface_complete(struct hostapd_iface * iface,int err)2028 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
2029 {
2030 struct hapd_interfaces *interfaces = iface->interfaces;
2031 struct hostapd_data *hapd = iface->bss[0];
2032 unsigned int i;
2033 int not_ready_in_sync_ifaces = 0;
2034
2035 if (!iface->need_to_start_in_sync)
2036 return hostapd_setup_interface_complete_sync(iface, err);
2037
2038 if (err) {
2039 wpa_printf(MSG_ERROR, "Interface initialization failed");
2040 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2041 iface->need_to_start_in_sync = 0;
2042 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2043 if (interfaces && interfaces->terminate_on_error)
2044 eloop_terminate();
2045 return -1;
2046 }
2047
2048 if (iface->ready_to_start_in_sync) {
2049 /* Already in ready and waiting. should never happpen */
2050 return 0;
2051 }
2052
2053 for (i = 0; i < interfaces->count; i++) {
2054 if (interfaces->iface[i]->need_to_start_in_sync &&
2055 !interfaces->iface[i]->ready_to_start_in_sync)
2056 not_ready_in_sync_ifaces++;
2057 }
2058
2059 /*
2060 * Check if this is the last interface, if yes then start all the other
2061 * waiting interfaces. If not, add this interface to the waiting list.
2062 */
2063 if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
2064 /*
2065 * If this interface went through CAC, do not synchronize, just
2066 * start immediately.
2067 */
2068 iface->need_to_start_in_sync = 0;
2069 wpa_printf(MSG_INFO,
2070 "%s: Finished CAC - bypass sync and start interface",
2071 iface->bss[0]->conf->iface);
2072 return hostapd_setup_interface_complete_sync(iface, err);
2073 }
2074
2075 if (not_ready_in_sync_ifaces > 1) {
2076 /* need to wait as there are other interfaces still coming up */
2077 iface->ready_to_start_in_sync = 1;
2078 wpa_printf(MSG_INFO,
2079 "%s: Interface waiting to sync with other interfaces",
2080 iface->bss[0]->conf->iface);
2081 return 0;
2082 }
2083
2084 wpa_printf(MSG_INFO,
2085 "%s: Last interface to sync - starting all interfaces",
2086 iface->bss[0]->conf->iface);
2087 iface->need_to_start_in_sync = 0;
2088 hostapd_setup_interface_complete_sync(iface, err);
2089 for (i = 0; i < interfaces->count; i++) {
2090 if (interfaces->iface[i]->need_to_start_in_sync &&
2091 interfaces->iface[i]->ready_to_start_in_sync) {
2092 hostapd_setup_interface_complete_sync(
2093 interfaces->iface[i], 0);
2094 /* Only once the interfaces are sync started */
2095 interfaces->iface[i]->need_to_start_in_sync = 0;
2096 }
2097 }
2098
2099 return 0;
2100 }
2101
2102
2103 /**
2104 * hostapd_setup_interface - Setup of an interface
2105 * @iface: Pointer to interface data.
2106 * Returns: 0 on success, -1 on failure
2107 *
2108 * Initializes the driver interface, validates the configuration,
2109 * and sets driver parameters based on the configuration.
2110 * Flushes old stations, sets the channel, encryption,
2111 * beacons, and WDS links based on the configuration.
2112 *
2113 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
2114 * or DFS operations, this function returns 0 before such operations have been
2115 * completed. The pending operations are registered into eloop and will be
2116 * completed from eloop callbacks. Those callbacks end up calling
2117 * hostapd_setup_interface_complete() once setup has been completed.
2118 */
hostapd_setup_interface(struct hostapd_iface * iface)2119 int hostapd_setup_interface(struct hostapd_iface *iface)
2120 {
2121 int ret;
2122
2123 ret = setup_interface(iface);
2124 if (ret) {
2125 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
2126 iface->bss[0]->conf->iface);
2127 return -1;
2128 }
2129
2130 return 0;
2131 }
2132
2133
2134 /**
2135 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
2136 * @hapd_iface: Pointer to interface data
2137 * @conf: Pointer to per-interface configuration
2138 * @bss: Pointer to per-BSS configuration for this BSS
2139 * Returns: Pointer to allocated BSS data
2140 *
2141 * This function is used to allocate per-BSS data structure. This data will be
2142 * freed after hostapd_cleanup() is called for it during interface
2143 * deinitialization.
2144 */
2145 struct hostapd_data *
hostapd_alloc_bss_data(struct hostapd_iface * hapd_iface,struct hostapd_config * conf,struct hostapd_bss_config * bss)2146 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
2147 struct hostapd_config *conf,
2148 struct hostapd_bss_config *bss)
2149 {
2150 struct hostapd_data *hapd;
2151
2152 hapd = os_zalloc(sizeof(*hapd));
2153 if (hapd == NULL)
2154 return NULL;
2155
2156 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
2157 hapd->iconf = conf;
2158 hapd->conf = bss;
2159 hapd->iface = hapd_iface;
2160 if (conf)
2161 hapd->driver = conf->driver;
2162 hapd->ctrl_sock = -1;
2163 dl_list_init(&hapd->ctrl_dst);
2164 dl_list_init(&hapd->nr_db);
2165 hapd->dhcp_sock = -1;
2166 #ifdef CONFIG_IEEE80211R_AP
2167 dl_list_init(&hapd->l2_queue);
2168 dl_list_init(&hapd->l2_oui_queue);
2169 #endif /* CONFIG_IEEE80211R_AP */
2170 #ifdef CONFIG_SAE
2171 dl_list_init(&hapd->sae_commit_queue);
2172 #endif /* CONFIG_SAE */
2173
2174 return hapd;
2175 }
2176
2177
hostapd_bss_deinit(struct hostapd_data * hapd)2178 static void hostapd_bss_deinit(struct hostapd_data *hapd)
2179 {
2180 if (!hapd)
2181 return;
2182 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
2183 hapd->conf ? hapd->conf->iface : "N/A");
2184 hostapd_bss_deinit_no_free(hapd);
2185 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2186 hostapd_cleanup(hapd);
2187 }
2188
2189
hostapd_interface_deinit(struct hostapd_iface * iface)2190 void hostapd_interface_deinit(struct hostapd_iface *iface)
2191 {
2192 int j;
2193
2194 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2195 if (iface == NULL)
2196 return;
2197
2198 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2199
2200 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
2201 iface->wait_channel_update = 0;
2202
2203 #ifdef CONFIG_FST
2204 if (iface->fst) {
2205 fst_detach(iface->fst);
2206 iface->fst = NULL;
2207 }
2208 #endif /* CONFIG_FST */
2209
2210 for (j = (int) iface->num_bss - 1; j >= 0; j--) {
2211 if (!iface->bss)
2212 break;
2213 hostapd_bss_deinit(iface->bss[j]);
2214 }
2215
2216 #ifdef CONFIG_IEEE80211N
2217 #ifdef NEED_AP_MLME
2218 hostapd_stop_setup_timers(iface);
2219 eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
2220 #endif /* NEED_AP_MLME */
2221 #endif /* CONFIG_IEEE80211N */
2222 }
2223
2224
hostapd_interface_free(struct hostapd_iface * iface)2225 void hostapd_interface_free(struct hostapd_iface *iface)
2226 {
2227 size_t j;
2228 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2229 for (j = 0; j < iface->num_bss; j++) {
2230 if (!iface->bss)
2231 break;
2232 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
2233 __func__, iface->bss[j]);
2234 os_free(iface->bss[j]);
2235 }
2236 hostapd_cleanup_iface(iface);
2237 }
2238
2239
hostapd_alloc_iface(void)2240 struct hostapd_iface * hostapd_alloc_iface(void)
2241 {
2242 struct hostapd_iface *hapd_iface;
2243
2244 hapd_iface = os_zalloc(sizeof(*hapd_iface));
2245 if (!hapd_iface)
2246 return NULL;
2247
2248 dl_list_init(&hapd_iface->sta_seen);
2249
2250 return hapd_iface;
2251 }
2252
2253
2254 /**
2255 * hostapd_init - Allocate and initialize per-interface data
2256 * @config_file: Path to the configuration file
2257 * Returns: Pointer to the allocated interface data or %NULL on failure
2258 *
2259 * This function is used to allocate main data structures for per-interface
2260 * data. The allocated data buffer will be freed by calling
2261 * hostapd_cleanup_iface().
2262 */
hostapd_init(struct hapd_interfaces * interfaces,const char * config_file)2263 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
2264 const char *config_file)
2265 {
2266 struct hostapd_iface *hapd_iface = NULL;
2267 struct hostapd_config *conf = NULL;
2268 struct hostapd_data *hapd;
2269 size_t i;
2270
2271 hapd_iface = hostapd_alloc_iface();
2272 if (hapd_iface == NULL)
2273 goto fail;
2274
2275 hapd_iface->config_fname = os_strdup(config_file);
2276 if (hapd_iface->config_fname == NULL)
2277 goto fail;
2278
2279 conf = interfaces->config_read_cb(hapd_iface->config_fname);
2280 if (conf == NULL)
2281 goto fail;
2282 hapd_iface->conf = conf;
2283
2284 hapd_iface->num_bss = conf->num_bss;
2285 hapd_iface->bss = os_calloc(conf->num_bss,
2286 sizeof(struct hostapd_data *));
2287 if (hapd_iface->bss == NULL)
2288 goto fail;
2289
2290 for (i = 0; i < conf->num_bss; i++) {
2291 hapd = hapd_iface->bss[i] =
2292 hostapd_alloc_bss_data(hapd_iface, conf,
2293 conf->bss[i]);
2294 if (hapd == NULL)
2295 goto fail;
2296 hapd->msg_ctx = hapd;
2297 }
2298
2299 return hapd_iface;
2300
2301 fail:
2302 wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
2303 config_file);
2304 if (conf)
2305 hostapd_config_free(conf);
2306 if (hapd_iface) {
2307 os_free(hapd_iface->config_fname);
2308 os_free(hapd_iface->bss);
2309 wpa_printf(MSG_DEBUG, "%s: free iface %p",
2310 __func__, hapd_iface);
2311 os_free(hapd_iface);
2312 }
2313 return NULL;
2314 }
2315
2316
ifname_in_use(struct hapd_interfaces * interfaces,const char * ifname)2317 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
2318 {
2319 size_t i, j;
2320
2321 for (i = 0; i < interfaces->count; i++) {
2322 struct hostapd_iface *iface = interfaces->iface[i];
2323 for (j = 0; j < iface->num_bss; j++) {
2324 struct hostapd_data *hapd = iface->bss[j];
2325 if (os_strcmp(ifname, hapd->conf->iface) == 0)
2326 return 1;
2327 }
2328 }
2329
2330 return 0;
2331 }
2332
2333
2334 /**
2335 * hostapd_interface_init_bss - Read configuration file and init BSS data
2336 *
2337 * This function is used to parse configuration file for a BSS. This BSS is
2338 * added to an existing interface sharing the same radio (if any) or a new
2339 * interface is created if this is the first interface on a radio. This
2340 * allocate memory for the BSS. No actual driver operations are started.
2341 *
2342 * This is similar to hostapd_interface_init(), but for a case where the
2343 * configuration is used to add a single BSS instead of all BSSes for a radio.
2344 */
2345 struct hostapd_iface *
hostapd_interface_init_bss(struct hapd_interfaces * interfaces,const char * phy,const char * config_fname,int debug)2346 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
2347 const char *config_fname, int debug)
2348 {
2349 struct hostapd_iface *new_iface = NULL, *iface = NULL;
2350 struct hostapd_data *hapd;
2351 int k;
2352 size_t i, bss_idx;
2353
2354 if (!phy || !*phy)
2355 return NULL;
2356
2357 for (i = 0; i < interfaces->count; i++) {
2358 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
2359 iface = interfaces->iface[i];
2360 break;
2361 }
2362 }
2363
2364 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
2365 config_fname, phy, iface ? "" : " --> new PHY");
2366 if (iface) {
2367 struct hostapd_config *conf;
2368 struct hostapd_bss_config **tmp_conf;
2369 struct hostapd_data **tmp_bss;
2370 struct hostapd_bss_config *bss;
2371 const char *ifname;
2372
2373 /* Add new BSS to existing iface */
2374 conf = interfaces->config_read_cb(config_fname);
2375 if (conf == NULL)
2376 return NULL;
2377 if (conf->num_bss > 1) {
2378 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
2379 hostapd_config_free(conf);
2380 return NULL;
2381 }
2382
2383 ifname = conf->bss[0]->iface;
2384 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
2385 wpa_printf(MSG_ERROR,
2386 "Interface name %s already in use", ifname);
2387 hostapd_config_free(conf);
2388 return NULL;
2389 }
2390
2391 tmp_conf = os_realloc_array(
2392 iface->conf->bss, iface->conf->num_bss + 1,
2393 sizeof(struct hostapd_bss_config *));
2394 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
2395 sizeof(struct hostapd_data *));
2396 if (tmp_bss)
2397 iface->bss = tmp_bss;
2398 if (tmp_conf) {
2399 iface->conf->bss = tmp_conf;
2400 iface->conf->last_bss = tmp_conf[0];
2401 }
2402 if (tmp_bss == NULL || tmp_conf == NULL) {
2403 hostapd_config_free(conf);
2404 return NULL;
2405 }
2406 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
2407 iface->conf->num_bss++;
2408
2409 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
2410 if (hapd == NULL) {
2411 iface->conf->num_bss--;
2412 hostapd_config_free(conf);
2413 return NULL;
2414 }
2415 iface->conf->last_bss = bss;
2416 iface->bss[iface->num_bss] = hapd;
2417 hapd->msg_ctx = hapd;
2418
2419 bss_idx = iface->num_bss++;
2420 conf->num_bss--;
2421 conf->bss[0] = NULL;
2422 hostapd_config_free(conf);
2423 } else {
2424 /* Add a new iface with the first BSS */
2425 new_iface = iface = hostapd_init(interfaces, config_fname);
2426 if (!iface)
2427 return NULL;
2428 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
2429 iface->interfaces = interfaces;
2430 bss_idx = 0;
2431 }
2432
2433 for (k = 0; k < debug; k++) {
2434 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
2435 iface->bss[bss_idx]->conf->logger_stdout_level--;
2436 }
2437
2438 if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
2439 !hostapd_drv_none(iface->bss[bss_idx])) {
2440 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
2441 config_fname);
2442 if (new_iface)
2443 hostapd_interface_deinit_free(new_iface);
2444 return NULL;
2445 }
2446
2447 return iface;
2448 }
2449
2450
hostapd_interface_deinit_free(struct hostapd_iface * iface)2451 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
2452 {
2453 const struct wpa_driver_ops *driver;
2454 void *drv_priv;
2455
2456 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2457 if (iface == NULL)
2458 return;
2459 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
2460 __func__, (unsigned int) iface->num_bss,
2461 (unsigned int) iface->conf->num_bss);
2462 driver = iface->bss[0]->driver;
2463 drv_priv = iface->bss[0]->drv_priv;
2464 hostapd_interface_deinit(iface);
2465 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2466 __func__, driver, drv_priv);
2467 if (driver && driver->hapd_deinit && drv_priv) {
2468 driver->hapd_deinit(drv_priv);
2469 iface->bss[0]->drv_priv = NULL;
2470 }
2471 hostapd_interface_free(iface);
2472 }
2473
2474
hostapd_deinit_driver(const struct wpa_driver_ops * driver,void * drv_priv,struct hostapd_iface * hapd_iface)2475 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
2476 void *drv_priv,
2477 struct hostapd_iface *hapd_iface)
2478 {
2479 size_t j;
2480
2481 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2482 __func__, driver, drv_priv);
2483 if (driver && driver->hapd_deinit && drv_priv) {
2484 driver->hapd_deinit(drv_priv);
2485 for (j = 0; j < hapd_iface->num_bss; j++) {
2486 wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
2487 __func__, (int) j,
2488 hapd_iface->bss[j]->drv_priv);
2489 if (hapd_iface->bss[j]->drv_priv == drv_priv) {
2490 hapd_iface->bss[j]->drv_priv = NULL;
2491 hapd_iface->extended_capa = NULL;
2492 hapd_iface->extended_capa_mask = NULL;
2493 hapd_iface->extended_capa_len = 0;
2494 }
2495 }
2496 }
2497 }
2498
2499
hostapd_enable_iface(struct hostapd_iface * hapd_iface)2500 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
2501 {
2502 size_t j;
2503
2504 if (hapd_iface->bss[0]->drv_priv != NULL) {
2505 wpa_printf(MSG_ERROR, "Interface %s already enabled",
2506 hapd_iface->conf->bss[0]->iface);
2507 return -1;
2508 }
2509
2510 wpa_printf(MSG_DEBUG, "Enable interface %s",
2511 hapd_iface->conf->bss[0]->iface);
2512
2513 for (j = 0; j < hapd_iface->num_bss; j++)
2514 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2515 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2516 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
2517 return -1;
2518 }
2519
2520 if (hapd_iface->interfaces == NULL ||
2521 hapd_iface->interfaces->driver_init == NULL ||
2522 hapd_iface->interfaces->driver_init(hapd_iface))
2523 return -1;
2524
2525 if (hostapd_setup_interface(hapd_iface)) {
2526 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
2527 hapd_iface->bss[0]->drv_priv,
2528 hapd_iface);
2529 return -1;
2530 }
2531
2532 return 0;
2533 }
2534
2535
hostapd_reload_iface(struct hostapd_iface * hapd_iface)2536 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
2537 {
2538 size_t j;
2539
2540 wpa_printf(MSG_DEBUG, "Reload interface %s",
2541 hapd_iface->conf->bss[0]->iface);
2542 for (j = 0; j < hapd_iface->num_bss; j++)
2543 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2544 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2545 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
2546 return -1;
2547 }
2548 hostapd_clear_old(hapd_iface);
2549 for (j = 0; j < hapd_iface->num_bss; j++)
2550 hostapd_reload_bss(hapd_iface->bss[j]);
2551
2552 return 0;
2553 }
2554
2555
hostapd_disable_iface(struct hostapd_iface * hapd_iface)2556 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
2557 {
2558 size_t j;
2559 const struct wpa_driver_ops *driver;
2560 void *drv_priv;
2561
2562 if (hapd_iface == NULL)
2563 return -1;
2564
2565 if (hapd_iface->bss[0]->drv_priv == NULL) {
2566 wpa_printf(MSG_INFO, "Interface %s already disabled",
2567 hapd_iface->conf->bss[0]->iface);
2568 return -1;
2569 }
2570
2571 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2572 driver = hapd_iface->bss[0]->driver;
2573 drv_priv = hapd_iface->bss[0]->drv_priv;
2574
2575 hapd_iface->driver_ap_teardown =
2576 !!(hapd_iface->drv_flags &
2577 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2578
2579 #ifdef NEED_AP_MLME
2580 for (j = 0; j < hapd_iface->num_bss; j++)
2581 hostapd_cleanup_cs_params(hapd_iface->bss[j]);
2582 #endif /* NEED_AP_MLME */
2583
2584 /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
2585 for (j = 0; j < hapd_iface->num_bss; j++) {
2586 struct hostapd_data *hapd = hapd_iface->bss[j];
2587 hostapd_bss_deinit_no_free(hapd);
2588 hostapd_free_hapd_data(hapd);
2589 }
2590
2591 hostapd_deinit_driver(driver, drv_priv, hapd_iface);
2592
2593 /* From hostapd_cleanup_iface: These were initialized in
2594 * hostapd_setup_interface and hostapd_setup_interface_complete
2595 */
2596 hostapd_cleanup_iface_partial(hapd_iface);
2597
2598 wpa_printf(MSG_DEBUG, "Interface %s disabled",
2599 hapd_iface->bss[0]->conf->iface);
2600 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
2601 return 0;
2602 }
2603
2604
2605 static struct hostapd_iface *
hostapd_iface_alloc(struct hapd_interfaces * interfaces)2606 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
2607 {
2608 struct hostapd_iface **iface, *hapd_iface;
2609
2610 iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
2611 sizeof(struct hostapd_iface *));
2612 if (iface == NULL)
2613 return NULL;
2614 interfaces->iface = iface;
2615 hapd_iface = interfaces->iface[interfaces->count] =
2616 hostapd_alloc_iface();
2617 if (hapd_iface == NULL) {
2618 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2619 "the interface", __func__);
2620 return NULL;
2621 }
2622 interfaces->count++;
2623 hapd_iface->interfaces = interfaces;
2624
2625 return hapd_iface;
2626 }
2627
2628
2629 static struct hostapd_config *
hostapd_config_alloc(struct hapd_interfaces * interfaces,const char * ifname,const char * ctrl_iface,const char * driver)2630 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
2631 const char *ctrl_iface, const char *driver)
2632 {
2633 struct hostapd_bss_config *bss;
2634 struct hostapd_config *conf;
2635
2636 /* Allocates memory for bss and conf */
2637 conf = hostapd_config_defaults();
2638 if (conf == NULL) {
2639 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2640 "configuration", __func__);
2641 return NULL;
2642 }
2643
2644 if (driver) {
2645 int j;
2646
2647 for (j = 0; wpa_drivers[j]; j++) {
2648 if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
2649 conf->driver = wpa_drivers[j];
2650 goto skip;
2651 }
2652 }
2653
2654 wpa_printf(MSG_ERROR,
2655 "Invalid/unknown driver '%s' - registering the default driver",
2656 driver);
2657 }
2658
2659 conf->driver = wpa_drivers[0];
2660 if (conf->driver == NULL) {
2661 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
2662 hostapd_config_free(conf);
2663 return NULL;
2664 }
2665
2666 skip:
2667 bss = conf->last_bss = conf->bss[0];
2668
2669 os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
2670 bss->ctrl_interface = os_strdup(ctrl_iface);
2671 if (bss->ctrl_interface == NULL) {
2672 hostapd_config_free(conf);
2673 return NULL;
2674 }
2675
2676 /* Reading configuration file skipped, will be done in SET!
2677 * From reading the configuration till the end has to be done in
2678 * SET
2679 */
2680 return conf;
2681 }
2682
2683
hostapd_data_alloc(struct hostapd_iface * hapd_iface,struct hostapd_config * conf)2684 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
2685 struct hostapd_config *conf)
2686 {
2687 size_t i;
2688 struct hostapd_data *hapd;
2689
2690 hapd_iface->bss = os_calloc(conf->num_bss,
2691 sizeof(struct hostapd_data *));
2692 if (hapd_iface->bss == NULL)
2693 return -1;
2694
2695 for (i = 0; i < conf->num_bss; i++) {
2696 hapd = hapd_iface->bss[i] =
2697 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
2698 if (hapd == NULL) {
2699 while (i > 0) {
2700 i--;
2701 os_free(hapd_iface->bss[i]);
2702 hapd_iface->bss[i] = NULL;
2703 }
2704 os_free(hapd_iface->bss);
2705 hapd_iface->bss = NULL;
2706 return -1;
2707 }
2708 hapd->msg_ctx = hapd;
2709 }
2710
2711 hapd_iface->conf = conf;
2712 hapd_iface->num_bss = conf->num_bss;
2713
2714 return 0;
2715 }
2716
2717
hostapd_add_iface(struct hapd_interfaces * interfaces,char * buf)2718 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
2719 {
2720 struct hostapd_config *conf = NULL;
2721 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
2722 struct hostapd_data *hapd;
2723 char *ptr;
2724 size_t i, j;
2725 const char *conf_file = NULL, *phy_name = NULL;
2726
2727 if (os_strncmp(buf, "bss_config=", 11) == 0) {
2728 char *pos;
2729 phy_name = buf + 11;
2730 pos = os_strchr(phy_name, ':');
2731 if (!pos)
2732 return -1;
2733 *pos++ = '\0';
2734 conf_file = pos;
2735 if (!os_strlen(conf_file))
2736 return -1;
2737
2738 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
2739 conf_file, 0);
2740 if (!hapd_iface)
2741 return -1;
2742 for (j = 0; j < interfaces->count; j++) {
2743 if (interfaces->iface[j] == hapd_iface)
2744 break;
2745 }
2746 if (j == interfaces->count) {
2747 struct hostapd_iface **tmp;
2748 tmp = os_realloc_array(interfaces->iface,
2749 interfaces->count + 1,
2750 sizeof(struct hostapd_iface *));
2751 if (!tmp) {
2752 hostapd_interface_deinit_free(hapd_iface);
2753 return -1;
2754 }
2755 interfaces->iface = tmp;
2756 interfaces->iface[interfaces->count++] = hapd_iface;
2757 new_iface = hapd_iface;
2758 }
2759
2760 if (new_iface) {
2761 if (interfaces->driver_init(hapd_iface))
2762 goto fail;
2763
2764 if (hostapd_setup_interface(hapd_iface)) {
2765 hostapd_deinit_driver(
2766 hapd_iface->bss[0]->driver,
2767 hapd_iface->bss[0]->drv_priv,
2768 hapd_iface);
2769 goto fail;
2770 }
2771 } else {
2772 /* Assign new BSS with bss[0]'s driver info */
2773 hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
2774 hapd->driver = hapd_iface->bss[0]->driver;
2775 hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
2776 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
2777 ETH_ALEN);
2778
2779 if (start_ctrl_iface_bss(hapd) < 0 ||
2780 (hapd_iface->state == HAPD_IFACE_ENABLED &&
2781 hostapd_setup_bss(hapd, -1))) {
2782 hostapd_cleanup(hapd);
2783 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
2784 hapd_iface->conf->num_bss--;
2785 hapd_iface->num_bss--;
2786 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
2787 __func__, hapd, hapd->conf->iface);
2788 hostapd_config_free_bss(hapd->conf);
2789 hapd->conf = NULL;
2790 os_free(hapd);
2791 return -1;
2792 }
2793 }
2794 hostapd_owe_update_trans(hapd_iface);
2795 return 0;
2796 }
2797
2798 ptr = os_strchr(buf, ' ');
2799 if (ptr == NULL)
2800 return -1;
2801 *ptr++ = '\0';
2802
2803 if (os_strncmp(ptr, "config=", 7) == 0)
2804 conf_file = ptr + 7;
2805
2806 for (i = 0; i < interfaces->count; i++) {
2807 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
2808 buf)) {
2809 wpa_printf(MSG_INFO, "Cannot add interface - it "
2810 "already exists");
2811 return -1;
2812 }
2813 }
2814
2815 hapd_iface = hostapd_iface_alloc(interfaces);
2816 if (hapd_iface == NULL) {
2817 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2818 "for interface", __func__);
2819 goto fail;
2820 }
2821 new_iface = hapd_iface;
2822
2823 if (conf_file && interfaces->config_read_cb) {
2824 conf = interfaces->config_read_cb(conf_file);
2825 if (conf && conf->bss)
2826 os_strlcpy(conf->bss[0]->iface, buf,
2827 sizeof(conf->bss[0]->iface));
2828 } else {
2829 char *driver = os_strchr(ptr, ' ');
2830
2831 if (driver)
2832 *driver++ = '\0';
2833 conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
2834 }
2835
2836 if (conf == NULL || conf->bss == NULL) {
2837 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2838 "for configuration", __func__);
2839 goto fail;
2840 }
2841
2842 if (hostapd_data_alloc(hapd_iface, conf) < 0) {
2843 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2844 "for hostapd", __func__);
2845 goto fail;
2846 }
2847 conf = NULL;
2848
2849 if (start_ctrl_iface(hapd_iface) < 0)
2850 goto fail;
2851
2852 wpa_printf(MSG_INFO, "Add interface '%s'",
2853 hapd_iface->conf->bss[0]->iface);
2854
2855 return 0;
2856
2857 fail:
2858 if (conf)
2859 hostapd_config_free(conf);
2860 if (hapd_iface) {
2861 if (hapd_iface->bss) {
2862 for (i = 0; i < hapd_iface->num_bss; i++) {
2863 hapd = hapd_iface->bss[i];
2864 if (!hapd)
2865 continue;
2866 if (hapd_iface->interfaces &&
2867 hapd_iface->interfaces->ctrl_iface_deinit)
2868 hapd_iface->interfaces->
2869 ctrl_iface_deinit(hapd);
2870 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2871 __func__, hapd_iface->bss[i],
2872 hapd->conf->iface);
2873 hostapd_cleanup(hapd);
2874 os_free(hapd);
2875 hapd_iface->bss[i] = NULL;
2876 }
2877 os_free(hapd_iface->bss);
2878 hapd_iface->bss = NULL;
2879 }
2880 if (new_iface) {
2881 interfaces->count--;
2882 interfaces->iface[interfaces->count] = NULL;
2883 }
2884 hostapd_cleanup_iface(hapd_iface);
2885 }
2886 return -1;
2887 }
2888
2889
hostapd_remove_bss(struct hostapd_iface * iface,unsigned int idx)2890 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2891 {
2892 size_t i;
2893
2894 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2895
2896 /* Remove hostapd_data only if it has already been initialized */
2897 if (idx < iface->num_bss) {
2898 struct hostapd_data *hapd = iface->bss[idx];
2899
2900 hostapd_bss_deinit(hapd);
2901 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2902 __func__, hapd, hapd->conf->iface);
2903 hostapd_config_free_bss(hapd->conf);
2904 hapd->conf = NULL;
2905 os_free(hapd);
2906
2907 iface->num_bss--;
2908
2909 for (i = idx; i < iface->num_bss; i++)
2910 iface->bss[i] = iface->bss[i + 1];
2911 } else {
2912 hostapd_config_free_bss(iface->conf->bss[idx]);
2913 iface->conf->bss[idx] = NULL;
2914 }
2915
2916 iface->conf->num_bss--;
2917 for (i = idx; i < iface->conf->num_bss; i++)
2918 iface->conf->bss[i] = iface->conf->bss[i + 1];
2919
2920 return 0;
2921 }
2922
2923
hostapd_remove_iface(struct hapd_interfaces * interfaces,char * buf)2924 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
2925 {
2926 struct hostapd_iface *hapd_iface;
2927 size_t i, j, k = 0;
2928
2929 for (i = 0; i < interfaces->count; i++) {
2930 hapd_iface = interfaces->iface[i];
2931 if (hapd_iface == NULL)
2932 return -1;
2933 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
2934 wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
2935 hapd_iface->driver_ap_teardown =
2936 !!(hapd_iface->drv_flags &
2937 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2938
2939 hostapd_interface_deinit_free(hapd_iface);
2940 k = i;
2941 while (k < (interfaces->count - 1)) {
2942 interfaces->iface[k] =
2943 interfaces->iface[k + 1];
2944 k++;
2945 }
2946 interfaces->count--;
2947 return 0;
2948 }
2949
2950 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
2951 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
2952 hapd_iface->driver_ap_teardown =
2953 !(hapd_iface->drv_flags &
2954 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2955 return hostapd_remove_bss(hapd_iface, j);
2956 }
2957 }
2958 }
2959 return -1;
2960 }
2961
2962
2963 /**
2964 * hostapd_new_assoc_sta - Notify that a new station associated with the AP
2965 * @hapd: Pointer to BSS data
2966 * @sta: Pointer to the associated STA data
2967 * @reassoc: 1 to indicate this was a re-association; 0 = first association
2968 *
2969 * This function will be called whenever a station associates with the AP. It
2970 * can be called from ieee802_11.c for drivers that export MLME to hostapd and
2971 * from drv_callbacks.c based on driver events for drivers that take care of
2972 * management frames (IEEE 802.11 authentication and association) internally.
2973 */
hostapd_new_assoc_sta(struct hostapd_data * hapd,struct sta_info * sta,int reassoc)2974 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
2975 int reassoc)
2976 {
2977 if (hapd->tkip_countermeasures) {
2978 hostapd_drv_sta_deauth(hapd, sta->addr,
2979 WLAN_REASON_MICHAEL_MIC_FAILURE);
2980 return;
2981 }
2982
2983 hostapd_prune_associations(hapd, sta->addr);
2984 ap_sta_clear_disconnect_timeouts(hapd, sta);
2985
2986 /* IEEE 802.11F (IAPP) */
2987 if (hapd->conf->ieee802_11f)
2988 iapp_new_station(hapd->iapp, sta);
2989
2990 #ifdef CONFIG_P2P
2991 if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
2992 sta->no_p2p_set = 1;
2993 hapd->num_sta_no_p2p++;
2994 if (hapd->num_sta_no_p2p == 1)
2995 hostapd_p2p_non_p2p_sta_connected(hapd);
2996 }
2997 #endif /* CONFIG_P2P */
2998
2999 /* Start accounting here, if IEEE 802.1X and WPA are not used.
3000 * IEEE 802.1X/WPA code will start accounting after the station has
3001 * been authorized. */
3002 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
3003 ap_sta_set_authorized(hapd, sta, 1);
3004 os_get_reltime(&sta->connected_time);
3005 accounting_sta_start(hapd, sta);
3006 }
3007
3008 /* Start IEEE 802.1X authentication process for new stations */
3009 ieee802_1x_new_station(hapd, sta);
3010 if (reassoc) {
3011 if (sta->auth_alg != WLAN_AUTH_FT &&
3012 sta->auth_alg != WLAN_AUTH_FILS_SK &&
3013 sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&
3014 sta->auth_alg != WLAN_AUTH_FILS_PK &&
3015 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
3016 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
3017 } else
3018 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
3019
3020 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) {
3021 if (eloop_cancel_timeout(ap_handle_timer, hapd, sta) > 0) {
3022 wpa_printf(MSG_DEBUG,
3023 "%s: %s: canceled wired ap_handle_timer timeout for "
3024 MACSTR,
3025 hapd->conf->iface, __func__,
3026 MAC2STR(sta->addr));
3027 }
3028 } else if (!(hapd->iface->drv_flags &
3029 WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
3030 wpa_printf(MSG_DEBUG,
3031 "%s: %s: reschedule ap_handle_timer timeout for "
3032 MACSTR " (%d seconds - ap_max_inactivity)",
3033 hapd->conf->iface, __func__, MAC2STR(sta->addr),
3034 hapd->conf->ap_max_inactivity);
3035 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
3036 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
3037 ap_handle_timer, hapd, sta);
3038 }
3039 }
3040
3041
hostapd_state_text(enum hostapd_iface_state s)3042 const char * hostapd_state_text(enum hostapd_iface_state s)
3043 {
3044 switch (s) {
3045 case HAPD_IFACE_UNINITIALIZED:
3046 return "UNINITIALIZED";
3047 case HAPD_IFACE_DISABLED:
3048 return "DISABLED";
3049 case HAPD_IFACE_COUNTRY_UPDATE:
3050 return "COUNTRY_UPDATE";
3051 case HAPD_IFACE_ACS:
3052 return "ACS";
3053 case HAPD_IFACE_HT_SCAN:
3054 return "HT_SCAN";
3055 case HAPD_IFACE_DFS:
3056 return "DFS";
3057 case HAPD_IFACE_ENABLED:
3058 return "ENABLED";
3059 }
3060
3061 return "UNKNOWN";
3062 }
3063
3064
hostapd_set_state(struct hostapd_iface * iface,enum hostapd_iface_state s)3065 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
3066 {
3067 wpa_printf(MSG_INFO, "%s: interface state %s->%s",
3068 iface->conf ? iface->conf->bss[0]->iface : "N/A",
3069 hostapd_state_text(iface->state), hostapd_state_text(s));
3070 iface->state = s;
3071 }
3072
3073
hostapd_csa_in_progress(struct hostapd_iface * iface)3074 int hostapd_csa_in_progress(struct hostapd_iface *iface)
3075 {
3076 unsigned int i;
3077
3078 for (i = 0; i < iface->num_bss; i++)
3079 if (iface->bss[i]->csa_in_progress)
3080 return 1;
3081 return 0;
3082 }
3083
3084
3085 #ifdef NEED_AP_MLME
3086
free_beacon_data(struct beacon_data * beacon)3087 static void free_beacon_data(struct beacon_data *beacon)
3088 {
3089 os_free(beacon->head);
3090 beacon->head = NULL;
3091 os_free(beacon->tail);
3092 beacon->tail = NULL;
3093 os_free(beacon->probe_resp);
3094 beacon->probe_resp = NULL;
3095 os_free(beacon->beacon_ies);
3096 beacon->beacon_ies = NULL;
3097 os_free(beacon->proberesp_ies);
3098 beacon->proberesp_ies = NULL;
3099 os_free(beacon->assocresp_ies);
3100 beacon->assocresp_ies = NULL;
3101 }
3102
3103
hostapd_build_beacon_data(struct hostapd_data * hapd,struct beacon_data * beacon)3104 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
3105 struct beacon_data *beacon)
3106 {
3107 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
3108 struct wpa_driver_ap_params params;
3109 int ret;
3110
3111 os_memset(beacon, 0, sizeof(*beacon));
3112 ret = ieee802_11_build_ap_params(hapd, ¶ms);
3113 if (ret < 0)
3114 return ret;
3115
3116 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
3117 &proberesp_extra,
3118 &assocresp_extra);
3119 if (ret)
3120 goto free_ap_params;
3121
3122 ret = -1;
3123 beacon->head = os_memdup(params.head, params.head_len);
3124 if (!beacon->head)
3125 goto free_ap_extra_ies;
3126
3127 beacon->head_len = params.head_len;
3128
3129 beacon->tail = os_memdup(params.tail, params.tail_len);
3130 if (!beacon->tail)
3131 goto free_beacon;
3132
3133 beacon->tail_len = params.tail_len;
3134
3135 if (params.proberesp != NULL) {
3136 beacon->probe_resp = os_memdup(params.proberesp,
3137 params.proberesp_len);
3138 if (!beacon->probe_resp)
3139 goto free_beacon;
3140
3141 beacon->probe_resp_len = params.proberesp_len;
3142 }
3143
3144 /* copy the extra ies */
3145 if (beacon_extra) {
3146 beacon->beacon_ies = os_memdup(beacon_extra->buf,
3147 wpabuf_len(beacon_extra));
3148 if (!beacon->beacon_ies)
3149 goto free_beacon;
3150
3151 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
3152 }
3153
3154 if (proberesp_extra) {
3155 beacon->proberesp_ies = os_memdup(proberesp_extra->buf,
3156 wpabuf_len(proberesp_extra));
3157 if (!beacon->proberesp_ies)
3158 goto free_beacon;
3159
3160 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
3161 }
3162
3163 if (assocresp_extra) {
3164 beacon->assocresp_ies = os_memdup(assocresp_extra->buf,
3165 wpabuf_len(assocresp_extra));
3166 if (!beacon->assocresp_ies)
3167 goto free_beacon;
3168
3169 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
3170 }
3171
3172 ret = 0;
3173 free_beacon:
3174 /* if the function fails, the caller should not free beacon data */
3175 if (ret)
3176 free_beacon_data(beacon);
3177
3178 free_ap_extra_ies:
3179 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
3180 assocresp_extra);
3181 free_ap_params:
3182 ieee802_11_free_ap_params(¶ms);
3183 return ret;
3184 }
3185
3186
3187 /*
3188 * TODO: This flow currently supports only changing channel and width within
3189 * the same hw_mode. Any other changes to MAC parameters or provided settings
3190 * are not supported.
3191 */
hostapd_change_config_freq(struct hostapd_data * hapd,struct hostapd_config * conf,struct hostapd_freq_params * params,struct hostapd_freq_params * old_params)3192 static int hostapd_change_config_freq(struct hostapd_data *hapd,
3193 struct hostapd_config *conf,
3194 struct hostapd_freq_params *params,
3195 struct hostapd_freq_params *old_params)
3196 {
3197 int channel;
3198
3199 if (!params->channel) {
3200 /* check if the new channel is supported by hw */
3201 params->channel = hostapd_hw_get_channel(hapd, params->freq);
3202 }
3203
3204 channel = params->channel;
3205 if (!channel)
3206 return -1;
3207
3208 /* if a pointer to old_params is provided we save previous state */
3209 if (old_params &&
3210 hostapd_set_freq_params(old_params, conf->hw_mode,
3211 hostapd_hw_get_freq(hapd, conf->channel),
3212 conf->channel, conf->ieee80211n,
3213 conf->ieee80211ac,
3214 conf->secondary_channel,
3215 conf->vht_oper_chwidth,
3216 conf->vht_oper_centr_freq_seg0_idx,
3217 conf->vht_oper_centr_freq_seg1_idx,
3218 conf->vht_capab))
3219 return -1;
3220
3221 switch (params->bandwidth) {
3222 case 0:
3223 case 20:
3224 case 40:
3225 conf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
3226 break;
3227 case 80:
3228 if (params->center_freq2)
3229 conf->vht_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
3230 else
3231 conf->vht_oper_chwidth = VHT_CHANWIDTH_80MHZ;
3232 break;
3233 case 160:
3234 conf->vht_oper_chwidth = VHT_CHANWIDTH_160MHZ;
3235 break;
3236 default:
3237 return -1;
3238 }
3239
3240 conf->channel = channel;
3241 conf->ieee80211n = params->ht_enabled;
3242 conf->secondary_channel = params->sec_channel_offset;
3243 ieee80211_freq_to_chan(params->center_freq1,
3244 &conf->vht_oper_centr_freq_seg0_idx);
3245 ieee80211_freq_to_chan(params->center_freq2,
3246 &conf->vht_oper_centr_freq_seg1_idx);
3247
3248 /* TODO: maybe call here hostapd_config_check here? */
3249
3250 return 0;
3251 }
3252
3253
hostapd_fill_csa_settings(struct hostapd_data * hapd,struct csa_settings * settings)3254 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
3255 struct csa_settings *settings)
3256 {
3257 struct hostapd_iface *iface = hapd->iface;
3258 struct hostapd_freq_params old_freq;
3259 int ret;
3260 u8 chan, vht_bandwidth;
3261
3262 os_memset(&old_freq, 0, sizeof(old_freq));
3263 if (!iface || !iface->freq || hapd->csa_in_progress)
3264 return -1;
3265
3266 switch (settings->freq_params.bandwidth) {
3267 case 80:
3268 if (settings->freq_params.center_freq2)
3269 vht_bandwidth = VHT_CHANWIDTH_80P80MHZ;
3270 else
3271 vht_bandwidth = VHT_CHANWIDTH_80MHZ;
3272 break;
3273 case 160:
3274 vht_bandwidth = VHT_CHANWIDTH_160MHZ;
3275 break;
3276 default:
3277 vht_bandwidth = VHT_CHANWIDTH_USE_HT;
3278 break;
3279 }
3280
3281 if (ieee80211_freq_to_channel_ext(
3282 settings->freq_params.freq,
3283 settings->freq_params.sec_channel_offset,
3284 vht_bandwidth,
3285 &hapd->iface->cs_oper_class,
3286 &chan) == NUM_HOSTAPD_MODES) {
3287 wpa_printf(MSG_DEBUG,
3288 "invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d)",
3289 settings->freq_params.freq,
3290 settings->freq_params.sec_channel_offset,
3291 settings->freq_params.vht_enabled);
3292 return -1;
3293 }
3294
3295 settings->freq_params.channel = chan;
3296
3297 ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
3298 &settings->freq_params,
3299 &old_freq);
3300 if (ret)
3301 return ret;
3302
3303 ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
3304
3305 /* change back the configuration */
3306 hostapd_change_config_freq(iface->bss[0], iface->conf,
3307 &old_freq, NULL);
3308
3309 if (ret)
3310 return ret;
3311
3312 /* set channel switch parameters for csa ie */
3313 hapd->cs_freq_params = settings->freq_params;
3314 hapd->cs_count = settings->cs_count;
3315 hapd->cs_block_tx = settings->block_tx;
3316
3317 ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
3318 if (ret) {
3319 free_beacon_data(&settings->beacon_after);
3320 return ret;
3321 }
3322
3323 settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
3324 settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
3325 settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
3326 settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
3327
3328 return 0;
3329 }
3330
3331
hostapd_cleanup_cs_params(struct hostapd_data * hapd)3332 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
3333 {
3334 os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
3335 hapd->cs_count = 0;
3336 hapd->cs_block_tx = 0;
3337 hapd->cs_c_off_beacon = 0;
3338 hapd->cs_c_off_proberesp = 0;
3339 hapd->csa_in_progress = 0;
3340 hapd->cs_c_off_ecsa_beacon = 0;
3341 hapd->cs_c_off_ecsa_proberesp = 0;
3342 }
3343
3344
hostapd_chan_switch_vht_config(struct hostapd_data * hapd,int vht_enabled)3345 void hostapd_chan_switch_vht_config(struct hostapd_data *hapd, int vht_enabled)
3346 {
3347 if (vht_enabled)
3348 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_ENABLED;
3349 else
3350 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_DISABLED;
3351
3352 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
3353 HOSTAPD_LEVEL_INFO, "CHAN_SWITCH VHT CONFIG 0x%x",
3354 hapd->iconf->ch_switch_vht_config);
3355 }
3356
3357
hostapd_switch_channel(struct hostapd_data * hapd,struct csa_settings * settings)3358 int hostapd_switch_channel(struct hostapd_data *hapd,
3359 struct csa_settings *settings)
3360 {
3361 int ret;
3362
3363 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
3364 wpa_printf(MSG_INFO, "CSA is not supported");
3365 return -1;
3366 }
3367
3368 ret = hostapd_fill_csa_settings(hapd, settings);
3369 if (ret)
3370 return ret;
3371
3372 ret = hostapd_drv_switch_channel(hapd, settings);
3373 free_beacon_data(&settings->beacon_csa);
3374 free_beacon_data(&settings->beacon_after);
3375
3376 if (ret) {
3377 /* if we failed, clean cs parameters */
3378 hostapd_cleanup_cs_params(hapd);
3379 return ret;
3380 }
3381
3382 hapd->csa_in_progress = 1;
3383 return 0;
3384 }
3385
3386
3387 void
hostapd_switch_channel_fallback(struct hostapd_iface * iface,const struct hostapd_freq_params * freq_params)3388 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
3389 const struct hostapd_freq_params *freq_params)
3390 {
3391 int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT;
3392
3393 wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
3394
3395 if (freq_params->center_freq1)
3396 vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
3397 if (freq_params->center_freq2)
3398 vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
3399
3400 switch (freq_params->bandwidth) {
3401 case 0:
3402 case 20:
3403 case 40:
3404 vht_bw = VHT_CHANWIDTH_USE_HT;
3405 break;
3406 case 80:
3407 if (freq_params->center_freq2)
3408 vht_bw = VHT_CHANWIDTH_80P80MHZ;
3409 else
3410 vht_bw = VHT_CHANWIDTH_80MHZ;
3411 break;
3412 case 160:
3413 vht_bw = VHT_CHANWIDTH_160MHZ;
3414 break;
3415 default:
3416 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
3417 freq_params->bandwidth);
3418 break;
3419 }
3420
3421 iface->freq = freq_params->freq;
3422 iface->conf->channel = freq_params->channel;
3423 iface->conf->secondary_channel = freq_params->sec_channel_offset;
3424 iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx;
3425 iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx;
3426 iface->conf->vht_oper_chwidth = vht_bw;
3427 iface->conf->ieee80211n = freq_params->ht_enabled;
3428 iface->conf->ieee80211ac = freq_params->vht_enabled;
3429
3430 /*
3431 * cs_params must not be cleared earlier because the freq_params
3432 * argument may actually point to one of these.
3433 * These params will be cleared during interface disable below.
3434 */
3435 hostapd_disable_iface(iface);
3436 hostapd_enable_iface(iface);
3437 }
3438
3439 #endif /* NEED_AP_MLME */
3440
3441
hostapd_get_iface(struct hapd_interfaces * interfaces,const char * ifname)3442 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
3443 const char *ifname)
3444 {
3445 size_t i, j;
3446
3447 for (i = 0; i < interfaces->count; i++) {
3448 struct hostapd_iface *iface = interfaces->iface[i];
3449
3450 for (j = 0; j < iface->num_bss; j++) {
3451 struct hostapd_data *hapd = iface->bss[j];
3452
3453 if (os_strcmp(ifname, hapd->conf->iface) == 0)
3454 return hapd;
3455 }
3456 }
3457
3458 return NULL;
3459 }
3460
3461
hostapd_periodic_iface(struct hostapd_iface * iface)3462 void hostapd_periodic_iface(struct hostapd_iface *iface)
3463 {
3464 size_t i;
3465
3466 ap_list_timer(iface);
3467
3468 for (i = 0; i < iface->num_bss; i++) {
3469 struct hostapd_data *hapd = iface->bss[i];
3470
3471 if (!hapd->started)
3472 continue;
3473
3474 #ifndef CONFIG_NO_RADIUS
3475 hostapd_acl_expire(hapd);
3476 #endif /* CONFIG_NO_RADIUS */
3477 }
3478 }
3479