Line data Source code
1 : /*
2 : * hostapd / Initialization and configuration
3 : * Copyright (c) 2002-2014, 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 "radius/radius_client.h"
16 : #include "radius/radius_das.h"
17 : #include "eap_server/tncs.h"
18 : #include "hostapd.h"
19 : #include "authsrv.h"
20 : #include "sta_info.h"
21 : #include "accounting.h"
22 : #include "ap_list.h"
23 : #include "beacon.h"
24 : #include "iapp.h"
25 : #include "ieee802_1x.h"
26 : #include "ieee802_11_auth.h"
27 : #include "vlan_init.h"
28 : #include "wpa_auth.h"
29 : #include "wps_hostapd.h"
30 : #include "hw_features.h"
31 : #include "wpa_auth_glue.h"
32 : #include "ap_drv_ops.h"
33 : #include "ap_config.h"
34 : #include "p2p_hostapd.h"
35 : #include "gas_serv.h"
36 : #include "dfs.h"
37 : #include "ieee802_11.h"
38 :
39 :
40 : static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
41 : static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
42 : static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
43 : static int setup_interface2(struct hostapd_iface *iface);
44 : static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
45 :
46 :
47 1063 : int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
48 : int (*cb)(struct hostapd_iface *iface,
49 : void *ctx), void *ctx)
50 : {
51 : size_t i;
52 : int ret;
53 :
54 2219 : for (i = 0; i < interfaces->count; i++) {
55 1202 : ret = cb(interfaces->iface[i], ctx);
56 1202 : if (ret)
57 46 : return ret;
58 : }
59 :
60 1017 : return 0;
61 : }
62 :
63 :
64 18 : static void hostapd_reload_bss(struct hostapd_data *hapd)
65 : {
66 : struct hostapd_ssid *ssid;
67 :
68 : #ifndef CONFIG_NO_RADIUS
69 18 : radius_client_reconfig(hapd->radius, hapd->conf->radius);
70 : #endif /* CONFIG_NO_RADIUS */
71 :
72 18 : ssid = &hapd->conf->ssid;
73 18 : if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
74 1 : ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
75 : /*
76 : * Force PSK to be derived again since SSID or passphrase may
77 : * have changed.
78 : */
79 1 : os_free(ssid->wpa_psk);
80 1 : ssid->wpa_psk = NULL;
81 : }
82 18 : if (hostapd_setup_wpa_psk(hapd->conf)) {
83 0 : wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
84 : "after reloading configuration");
85 : }
86 :
87 18 : if (hapd->conf->ieee802_1x || hapd->conf->wpa)
88 17 : hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
89 : else
90 1 : hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
91 :
92 18 : if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
93 15 : hostapd_setup_wpa(hapd);
94 30 : if (hapd->wpa_auth)
95 15 : wpa_init_keys(hapd->wpa_auth);
96 3 : } else if (hapd->conf->wpa) {
97 : const u8 *wpa_ie;
98 : size_t wpa_ie_len;
99 2 : hostapd_reconfig_wpa(hapd);
100 2 : wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
101 2 : if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
102 0 : wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
103 : "the kernel driver.");
104 1 : } else if (hapd->wpa_auth) {
105 1 : wpa_deinit(hapd->wpa_auth);
106 1 : hapd->wpa_auth = NULL;
107 1 : hostapd_set_privacy(hapd, 0);
108 1 : hostapd_setup_encryption(hapd->conf->iface, hapd);
109 1 : hostapd_set_generic_elem(hapd, (u8 *) "", 0);
110 : }
111 :
112 18 : ieee802_11_set_beacon(hapd);
113 18 : hostapd_update_wps(hapd);
114 :
115 36 : if (hapd->conf->ssid.ssid_set &&
116 18 : hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
117 18 : hapd->conf->ssid.ssid_len)) {
118 0 : wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
119 : /* try to continue */
120 : }
121 18 : wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
122 18 : }
123 :
124 :
125 18 : static void hostapd_clear_old(struct hostapd_iface *iface)
126 : {
127 : size_t j;
128 :
129 : /*
130 : * Deauthenticate all stations since the new configuration may not
131 : * allow them to use the BSS anymore.
132 : */
133 36 : for (j = 0; j < iface->num_bss; j++) {
134 18 : hostapd_flush_old_stations(iface->bss[j],
135 : WLAN_REASON_PREV_AUTH_NOT_VALID);
136 18 : hostapd_broadcast_wep_clear(iface->bss[j]);
137 :
138 : #ifndef CONFIG_NO_RADIUS
139 : /* TODO: update dynamic data based on changed configuration
140 : * items (e.g., open/close sockets, etc.) */
141 18 : radius_client_flush(iface->bss[j]->radius, 0);
142 : #endif /* CONFIG_NO_RADIUS */
143 : }
144 18 : }
145 :
146 :
147 17 : int hostapd_reload_config(struct hostapd_iface *iface)
148 : {
149 17 : struct hostapd_data *hapd = iface->bss[0];
150 : struct hostapd_config *newconf, *oldconf;
151 : size_t j;
152 :
153 17 : if (iface->config_fname == NULL) {
154 : /* Only in-memory config in use - assume it has been updated */
155 16 : hostapd_clear_old(iface);
156 32 : for (j = 0; j < iface->num_bss; j++)
157 16 : hostapd_reload_bss(iface->bss[j]);
158 16 : return 0;
159 : }
160 :
161 2 : if (iface->interfaces == NULL ||
162 1 : iface->interfaces->config_read_cb == NULL)
163 0 : return -1;
164 1 : newconf = iface->interfaces->config_read_cb(iface->config_fname);
165 1 : if (newconf == NULL)
166 0 : return -1;
167 :
168 1 : hostapd_clear_old(iface);
169 :
170 1 : oldconf = hapd->iconf;
171 1 : iface->conf = newconf;
172 :
173 2 : for (j = 0; j < iface->num_bss; j++) {
174 1 : hapd = iface->bss[j];
175 1 : hapd->iconf = newconf;
176 1 : hapd->iconf->channel = oldconf->channel;
177 1 : hapd->iconf->secondary_channel = oldconf->secondary_channel;
178 1 : hapd->iconf->ieee80211n = oldconf->ieee80211n;
179 1 : hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
180 1 : hapd->iconf->ht_capab = oldconf->ht_capab;
181 1 : hapd->iconf->vht_capab = oldconf->vht_capab;
182 1 : hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth;
183 2 : hapd->iconf->vht_oper_centr_freq_seg0_idx =
184 1 : oldconf->vht_oper_centr_freq_seg0_idx;
185 2 : hapd->iconf->vht_oper_centr_freq_seg1_idx =
186 1 : oldconf->vht_oper_centr_freq_seg1_idx;
187 1 : hapd->conf = newconf->bss[j];
188 1 : hostapd_reload_bss(hapd);
189 : }
190 :
191 1 : hostapd_config_free(oldconf);
192 :
193 :
194 1 : return 0;
195 : }
196 :
197 :
198 716 : static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
199 : char *ifname)
200 : {
201 : int i;
202 :
203 3580 : for (i = 0; i < NUM_WEP_KEYS; i++) {
204 2864 : if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
205 : 0, NULL, 0, NULL, 0)) {
206 4 : wpa_printf(MSG_DEBUG, "Failed to clear default "
207 : "encryption keys (ifname=%s keyidx=%d)",
208 : ifname, i);
209 : }
210 : }
211 : #ifdef CONFIG_IEEE80211W
212 716 : if (hapd->conf->ieee80211w) {
213 369 : for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
214 246 : if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
215 : NULL, i, 0, NULL,
216 : 0, NULL, 0)) {
217 0 : wpa_printf(MSG_DEBUG, "Failed to clear "
218 : "default mgmt encryption keys "
219 : "(ifname=%s keyidx=%d)", ifname, i);
220 : }
221 : }
222 : }
223 : #endif /* CONFIG_IEEE80211W */
224 716 : }
225 :
226 :
227 716 : static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
228 : {
229 716 : hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
230 716 : return 0;
231 : }
232 :
233 :
234 683 : static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
235 : {
236 683 : int errors = 0, idx;
237 683 : struct hostapd_ssid *ssid = &hapd->conf->ssid;
238 :
239 683 : idx = ssid->wep.idx;
240 685 : if (ssid->wep.default_len &&
241 4 : hostapd_drv_set_key(hapd->conf->iface,
242 : hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
243 2 : 1, NULL, 0, ssid->wep.key[idx],
244 : ssid->wep.len[idx])) {
245 2 : wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
246 2 : errors++;
247 : }
248 :
249 683 : return errors;
250 : }
251 :
252 :
253 710 : static void hostapd_free_hapd_data(struct hostapd_data *hapd)
254 : {
255 710 : if (!hapd->started) {
256 28 : wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
257 28 : __func__, hapd->conf->iface);
258 738 : return;
259 : }
260 682 : hapd->started = 0;
261 :
262 682 : wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
263 682 : iapp_deinit(hapd->iapp);
264 682 : hapd->iapp = NULL;
265 682 : accounting_deinit(hapd);
266 682 : hostapd_deinit_wpa(hapd);
267 682 : vlan_deinit(hapd);
268 682 : hostapd_acl_deinit(hapd);
269 : #ifndef CONFIG_NO_RADIUS
270 556 : radius_client_deinit(hapd->radius);
271 556 : hapd->radius = NULL;
272 556 : radius_das_deinit(hapd->radius_das);
273 556 : hapd->radius_das = NULL;
274 : #endif /* CONFIG_NO_RADIUS */
275 :
276 682 : hostapd_deinit_wps(hapd);
277 :
278 682 : authsrv_deinit(hapd);
279 :
280 699 : if (hapd->interface_added &&
281 17 : hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
282 0 : wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
283 0 : hapd->conf->iface);
284 : }
285 :
286 682 : os_free(hapd->probereq_cb);
287 682 : hapd->probereq_cb = NULL;
288 :
289 : #ifdef CONFIG_P2P
290 126 : wpabuf_free(hapd->p2p_beacon_ie);
291 126 : hapd->p2p_beacon_ie = NULL;
292 126 : wpabuf_free(hapd->p2p_probe_resp_ie);
293 126 : hapd->p2p_probe_resp_ie = NULL;
294 : #endif /* CONFIG_P2P */
295 :
296 682 : wpabuf_free(hapd->time_adv);
297 :
298 : #ifdef CONFIG_INTERWORKING
299 682 : gas_serv_deinit(hapd);
300 : #endif /* CONFIG_INTERWORKING */
301 :
302 : #ifdef CONFIG_SQLITE
303 556 : os_free(hapd->tmp_eap_user.identity);
304 556 : os_free(hapd->tmp_eap_user.password);
305 : #endif /* CONFIG_SQLITE */
306 : }
307 :
308 :
309 : /**
310 : * hostapd_cleanup - Per-BSS cleanup (deinitialization)
311 : * @hapd: Pointer to BSS data
312 : *
313 : * This function is used to free all per-BSS data structures and resources.
314 : * Most of the modules that are initialized in hostapd_setup_bss() are
315 : * deinitialized here.
316 : */
317 699 : static void hostapd_cleanup(struct hostapd_data *hapd)
318 : {
319 699 : wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
320 699 : hapd->conf->iface);
321 1272 : if (hapd->iface->interfaces &&
322 573 : hapd->iface->interfaces->ctrl_iface_deinit)
323 573 : hapd->iface->interfaces->ctrl_iface_deinit(hapd);
324 699 : hostapd_free_hapd_data(hapd);
325 699 : }
326 :
327 :
328 691 : static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
329 : {
330 691 : wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
331 691 : hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
332 691 : iface->hw_features = NULL;
333 691 : os_free(iface->current_rates);
334 691 : iface->current_rates = NULL;
335 691 : os_free(iface->basic_rates);
336 691 : iface->basic_rates = NULL;
337 691 : ap_list_deinit(iface);
338 691 : }
339 :
340 :
341 : /**
342 : * hostapd_cleanup_iface - Complete per-interface cleanup
343 : * @iface: Pointer to interface data
344 : *
345 : * This function is called after per-BSS data structures are deinitialized
346 : * with hostapd_cleanup().
347 : */
348 680 : static void hostapd_cleanup_iface(struct hostapd_iface *iface)
349 : {
350 680 : wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
351 680 : eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
352 :
353 680 : hostapd_cleanup_iface_partial(iface);
354 680 : hostapd_config_free(iface->conf);
355 680 : iface->conf = NULL;
356 :
357 680 : os_free(iface->config_fname);
358 680 : os_free(iface->bss);
359 680 : wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
360 680 : os_free(iface);
361 680 : }
362 :
363 :
364 710 : static void hostapd_clear_wep(struct hostapd_data *hapd)
365 : {
366 710 : if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) {
367 16 : hostapd_set_privacy(hapd, 0);
368 16 : hostapd_broadcast_wep_clear(hapd);
369 : }
370 710 : }
371 :
372 :
373 683 : static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
374 : {
375 : int i;
376 :
377 683 : hostapd_broadcast_wep_set(hapd);
378 :
379 683 : if (hapd->conf->ssid.wep.default_len) {
380 2 : hostapd_set_privacy(hapd, 1);
381 2 : return 0;
382 : }
383 :
384 : /*
385 : * When IEEE 802.1X is not enabled, the driver may need to know how to
386 : * set authentication algorithms for static WEP.
387 : */
388 681 : hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
389 :
390 3405 : for (i = 0; i < 4; i++) {
391 2729 : if (hapd->conf->ssid.wep.key[i] &&
392 10 : hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
393 5 : i == hapd->conf->ssid.wep.idx, NULL, 0,
394 5 : hapd->conf->ssid.wep.key[i],
395 5 : hapd->conf->ssid.wep.len[i])) {
396 0 : wpa_printf(MSG_WARNING, "Could not set WEP "
397 : "encryption.");
398 0 : return -1;
399 : }
400 2729 : if (hapd->conf->ssid.wep.key[i] &&
401 5 : i == hapd->conf->ssid.wep.idx)
402 5 : hostapd_set_privacy(hapd, 1);
403 : }
404 :
405 681 : return 0;
406 : }
407 :
408 :
409 1410 : static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
410 : {
411 1410 : int ret = 0;
412 : u8 addr[ETH_ALEN];
413 :
414 1410 : if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
415 24 : return 0;
416 :
417 1386 : if (!hapd->iface->driver_ap_teardown) {
418 712 : wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
419 : "Flushing old station entries");
420 :
421 712 : if (hostapd_flush(hapd)) {
422 0 : wpa_msg(hapd->msg_ctx, MSG_WARNING,
423 : "Could not connect to kernel driver");
424 0 : ret = -1;
425 : }
426 : }
427 1386 : wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
428 1386 : os_memset(addr, 0xff, ETH_ALEN);
429 1386 : hostapd_drv_sta_deauth(hapd, addr, reason);
430 1386 : hostapd_free_stas(hapd);
431 :
432 1386 : return ret;
433 : }
434 :
435 :
436 : /**
437 : * hostapd_validate_bssid_configuration - Validate BSSID configuration
438 : * @iface: Pointer to interface data
439 : * Returns: 0 on success, -1 on failure
440 : *
441 : * This function is used to validate that the configured BSSIDs are valid.
442 : */
443 678 : static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
444 : {
445 678 : u8 mask[ETH_ALEN] = { 0 };
446 678 : struct hostapd_data *hapd = iface->bss[0];
447 678 : unsigned int i = iface->conf->num_bss, bits = 0, j;
448 678 : int auto_addr = 0;
449 :
450 678 : if (hostapd_drv_none(hapd))
451 2 : return 0;
452 :
453 : /* Generate BSSID mask that is large enough to cover the BSSIDs. */
454 :
455 : /* Determine the bits necessary to cover the number of BSSIDs. */
456 686 : for (i--; i; i >>= 1)
457 10 : bits++;
458 :
459 : /* Determine the bits necessary to any configured BSSIDs,
460 : if they are higher than the number of BSSIDs. */
461 1362 : for (j = 0; j < iface->conf->num_bss; j++) {
462 686 : if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
463 674 : if (j)
464 4 : auto_addr++;
465 674 : continue;
466 : }
467 :
468 84 : for (i = 0; i < ETH_ALEN; i++) {
469 144 : mask[i] |=
470 72 : iface->conf->bss[j]->bssid[i] ^
471 72 : hapd->own_addr[i];
472 : }
473 : }
474 :
475 676 : if (!auto_addr)
476 672 : goto skip_mask_ext;
477 :
478 4 : for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
479 : ;
480 4 : j = 0;
481 4 : if (i < ETH_ALEN) {
482 0 : j = (5 - i) * 8;
483 :
484 0 : while (mask[i] != 0) {
485 0 : mask[i] >>= 1;
486 0 : j++;
487 : }
488 : }
489 :
490 4 : if (bits < j)
491 0 : bits = j;
492 :
493 4 : if (bits > 40) {
494 0 : wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
495 : bits);
496 0 : return -1;
497 : }
498 :
499 4 : os_memset(mask, 0xff, ETH_ALEN);
500 4 : j = bits / 8;
501 4 : for (i = 5; i > 5 - j; i--)
502 0 : mask[i] = 0;
503 4 : j = bits % 8;
504 12 : while (j--)
505 4 : mask[i] <<= 1;
506 :
507 : skip_mask_ext:
508 4732 : wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
509 4732 : (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
510 :
511 676 : if (!auto_addr)
512 672 : return 0;
513 :
514 28 : for (i = 0; i < ETH_ALEN; i++) {
515 24 : if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
516 0 : wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
517 : " for start address " MACSTR ".",
518 0 : MAC2STR(mask), MAC2STR(hapd->own_addr));
519 0 : wpa_printf(MSG_ERROR, "Start address must be the "
520 : "first address in the block (i.e., addr "
521 : "AND mask == addr).");
522 0 : return -1;
523 : }
524 : }
525 :
526 4 : return 0;
527 : }
528 :
529 :
530 0 : static int mac_in_conf(struct hostapd_config *conf, const void *a)
531 : {
532 : size_t i;
533 :
534 0 : for (i = 0; i < conf->num_bss; i++) {
535 0 : if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
536 0 : return 1;
537 : }
538 : }
539 :
540 0 : return 0;
541 : }
542 :
543 :
544 : #ifndef CONFIG_NO_RADIUS
545 :
546 10 : static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
547 : struct radius_das_attrs *attr)
548 : {
549 13 : if (attr->nas_identifier &&
550 6 : (!hapd->conf->nas_identifier ||
551 3 : os_strlen(hapd->conf->nas_identifier) !=
552 5 : attr->nas_identifier_len ||
553 2 : os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
554 : attr->nas_identifier_len) != 0)) {
555 1 : wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
556 1 : return 1;
557 : }
558 :
559 12 : if (attr->nas_ip_addr &&
560 6 : (hapd->conf->own_ip_addr.af != AF_INET ||
561 3 : os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
562 : 0)) {
563 1 : wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
564 1 : return 1;
565 : }
566 :
567 : #ifdef CONFIG_IPV6
568 8 : if (attr->nas_ipv6_addr &&
569 0 : (hapd->conf->own_ip_addr.af != AF_INET6 ||
570 0 : os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
571 : != 0)) {
572 0 : wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
573 0 : return 1;
574 : }
575 : #endif /* CONFIG_IPV6 */
576 :
577 8 : return 0;
578 : }
579 :
580 :
581 8 : static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
582 : struct radius_das_attrs *attr)
583 : {
584 8 : struct sta_info *sta = NULL;
585 : char buf[128];
586 :
587 8 : if (attr->sta_addr)
588 3 : sta = ap_get_sta(hapd, attr->sta_addr);
589 :
590 10 : if (sta == NULL && attr->acct_session_id &&
591 2 : attr->acct_session_id_len == 17) {
592 3 : for (sta = hapd->sta_list; sta; sta = sta->next) {
593 2 : os_snprintf(buf, sizeof(buf), "%08X-%08X",
594 : sta->acct_session_id_hi,
595 : sta->acct_session_id_lo);
596 2 : if (os_memcmp(attr->acct_session_id, buf, 17) == 0)
597 1 : break;
598 : }
599 : }
600 :
601 8 : if (sta == NULL && attr->cui) {
602 1 : for (sta = hapd->sta_list; sta; sta = sta->next) {
603 : struct wpabuf *cui;
604 1 : cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
605 2 : if (cui && wpabuf_len(cui) == attr->cui_len &&
606 1 : os_memcmp(wpabuf_head(cui), attr->cui,
607 : attr->cui_len) == 0)
608 1 : break;
609 : }
610 : }
611 :
612 8 : if (sta == NULL && attr->user_name) {
613 3 : for (sta = hapd->sta_list; sta; sta = sta->next) {
614 : u8 *identity;
615 : size_t identity_len;
616 2 : identity = ieee802_1x_get_identity(sta->eapol_sm,
617 : &identity_len);
618 4 : if (identity &&
619 3 : identity_len == attr->user_name_len &&
620 1 : os_memcmp(identity, attr->user_name, identity_len)
621 : == 0)
622 1 : break;
623 : }
624 : }
625 :
626 8 : return sta;
627 : }
628 :
629 :
630 : static enum radius_das_res
631 10 : hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
632 : {
633 10 : struct hostapd_data *hapd = ctx;
634 : struct sta_info *sta;
635 :
636 10 : if (hostapd_das_nas_mismatch(hapd, attr))
637 2 : return RADIUS_DAS_NAS_MISMATCH;
638 :
639 8 : sta = hostapd_das_find_sta(hapd, attr);
640 8 : if (sta == NULL)
641 3 : return RADIUS_DAS_SESSION_NOT_FOUND;
642 :
643 5 : wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
644 :
645 5 : hostapd_drv_sta_deauth(hapd, sta->addr,
646 : WLAN_REASON_PREV_AUTH_NOT_VALID);
647 5 : ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
648 :
649 5 : return RADIUS_DAS_SUCCESS;
650 : }
651 :
652 : #endif /* CONFIG_NO_RADIUS */
653 :
654 :
655 : /**
656 : * hostapd_setup_bss - Per-BSS setup (initialization)
657 : * @hapd: Pointer to BSS data
658 : * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
659 : * but interface may exist
660 : *
661 : * This function is used to initialize all per-BSS data structures and
662 : * resources. This gets called in a loop for each BSS when an interface is
663 : * initialized. Most of the modules that are initialized here will be
664 : * deinitialized in hostapd_cleanup().
665 : */
666 682 : static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
667 : {
668 682 : struct hostapd_bss_config *conf = hapd->conf;
669 : u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
670 : int ssid_len, set_ssid;
671 : char force_ifname[IFNAMSIZ];
672 : u8 if_addr[ETH_ALEN];
673 :
674 682 : wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
675 682 : __func__, hapd, hapd->conf->iface, first);
676 :
677 : #ifdef EAP_SERVER_TNC
678 556 : if (hapd->conf->tnc && tncs_global_init() < 0) {
679 0 : wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
680 0 : return -1;
681 : }
682 : #endif /* EAP_SERVER_TNC */
683 :
684 682 : if (hapd->started) {
685 0 : wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
686 0 : __func__, hapd->conf->iface);
687 0 : return -1;
688 : }
689 682 : hapd->started = 1;
690 :
691 682 : if (!first || first == -1) {
692 17 : if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
693 : /* Allocate the next available BSSID. */
694 : do {
695 0 : inc_byte_array(hapd->own_addr, ETH_ALEN);
696 0 : } while (mac_in_conf(hapd->iconf, hapd->own_addr));
697 : } else {
698 : /* Allocate the configured BSSID. */
699 17 : os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
700 :
701 17 : if (hostapd_mac_comp(hapd->own_addr,
702 17 : hapd->iface->bss[0]->own_addr) ==
703 : 0) {
704 0 : wpa_printf(MSG_ERROR, "BSS '%s' may not have "
705 : "BSSID set to the MAC address of "
706 0 : "the radio", hapd->conf->iface);
707 0 : return -1;
708 : }
709 : }
710 :
711 17 : hapd->interface_added = 1;
712 51 : if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
713 17 : hapd->conf->iface, hapd->own_addr, hapd,
714 : &hapd->drv_priv, force_ifname, if_addr,
715 17 : hapd->conf->bridge[0] ? hapd->conf->bridge :
716 : NULL, first == -1)) {
717 0 : wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
718 0 : MACSTR ")", MAC2STR(hapd->own_addr));
719 0 : hapd->interface_added = 0;
720 0 : return -1;
721 : }
722 : }
723 :
724 682 : if (conf->wmm_enabled < 0)
725 557 : conf->wmm_enabled = hapd->iconf->ieee80211n;
726 :
727 682 : hostapd_flush_old_stations(hapd, WLAN_REASON_PREV_AUTH_NOT_VALID);
728 682 : hostapd_set_privacy(hapd, 0);
729 :
730 682 : hostapd_broadcast_wep_clear(hapd);
731 682 : if (hostapd_setup_encryption(hapd->conf->iface, hapd))
732 0 : return -1;
733 :
734 : /*
735 : * Fetch the SSID from the system and use it or,
736 : * if one was specified in the config file, verify they
737 : * match.
738 : */
739 682 : ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
740 682 : if (ssid_len < 0) {
741 0 : wpa_printf(MSG_ERROR, "Could not read SSID from system");
742 0 : return -1;
743 : }
744 682 : if (conf->ssid.ssid_set) {
745 : /*
746 : * If SSID is specified in the config file and it differs
747 : * from what is being used then force installation of the
748 : * new SSID.
749 : */
750 680 : set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
751 0 : os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
752 : } else {
753 : /*
754 : * No SSID in the config file; just use the one we got
755 : * from the system.
756 : */
757 2 : set_ssid = 0;
758 2 : conf->ssid.ssid_len = ssid_len;
759 2 : os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
760 : }
761 :
762 682 : if (!hostapd_drv_none(hapd)) {
763 6120 : wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
764 : " and ssid \"%s\"",
765 4760 : hapd->conf->iface, MAC2STR(hapd->own_addr),
766 680 : wpa_ssid_txt(hapd->conf->ssid.ssid,
767 680 : hapd->conf->ssid.ssid_len));
768 : }
769 :
770 682 : if (hostapd_setup_wpa_psk(conf)) {
771 4 : wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
772 4 : return -1;
773 : }
774 :
775 : /* Set SSID for the kernel driver (to be used in beacon and probe
776 : * response frames) */
777 678 : if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
778 : conf->ssid.ssid_len)) {
779 0 : wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
780 0 : return -1;
781 : }
782 :
783 678 : if (wpa_debug_level <= MSG_MSGDUMP)
784 678 : conf->radius->msg_dumps = 1;
785 : #ifndef CONFIG_NO_RADIUS
786 552 : hapd->radius = radius_client_init(hapd, conf->radius);
787 552 : if (hapd->radius == NULL) {
788 0 : wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
789 0 : return -1;
790 : }
791 :
792 552 : if (hapd->conf->radius_das_port) {
793 : struct radius_das_conf das_conf;
794 2 : os_memset(&das_conf, 0, sizeof(das_conf));
795 2 : das_conf.port = hapd->conf->radius_das_port;
796 2 : das_conf.shared_secret = hapd->conf->radius_das_shared_secret;
797 2 : das_conf.shared_secret_len =
798 2 : hapd->conf->radius_das_shared_secret_len;
799 2 : das_conf.client_addr = &hapd->conf->radius_das_client_addr;
800 2 : das_conf.time_window = hapd->conf->radius_das_time_window;
801 2 : das_conf.require_event_timestamp =
802 2 : hapd->conf->radius_das_require_event_timestamp;
803 2 : das_conf.ctx = hapd;
804 2 : das_conf.disconnect = hostapd_das_disconnect;
805 2 : hapd->radius_das = radius_das_init(&das_conf);
806 2 : if (hapd->radius_das == NULL) {
807 0 : wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
808 : "failed.");
809 0 : return -1;
810 : }
811 : }
812 : #endif /* CONFIG_NO_RADIUS */
813 :
814 678 : if (hostapd_acl_init(hapd)) {
815 0 : wpa_printf(MSG_ERROR, "ACL initialization failed.");
816 0 : return -1;
817 : }
818 678 : if (hostapd_init_wps(hapd, conf))
819 0 : return -1;
820 :
821 678 : if (authsrv_init(hapd) < 0)
822 0 : return -1;
823 :
824 678 : if (ieee802_1x_init(hapd)) {
825 0 : wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
826 0 : return -1;
827 : }
828 :
829 678 : if ((hapd->conf->wpa || hapd->conf->osen) && hostapd_setup_wpa(hapd))
830 0 : return -1;
831 :
832 678 : if (accounting_init(hapd)) {
833 0 : wpa_printf(MSG_ERROR, "Accounting initialization failed.");
834 0 : return -1;
835 : }
836 :
837 678 : if (hapd->conf->ieee802_11f &&
838 0 : (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
839 0 : wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
840 : "failed.");
841 0 : return -1;
842 : }
843 :
844 : #ifdef CONFIG_INTERWORKING
845 678 : if (gas_serv_init(hapd)) {
846 0 : wpa_printf(MSG_ERROR, "GAS server initialization failed");
847 0 : return -1;
848 : }
849 :
850 679 : if (conf->qos_map_set_len &&
851 1 : hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
852 1 : conf->qos_map_set_len)) {
853 0 : wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
854 0 : return -1;
855 : }
856 : #endif /* CONFIG_INTERWORKING */
857 :
858 678 : if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
859 0 : wpa_printf(MSG_ERROR, "VLAN initialization failed.");
860 0 : return -1;
861 : }
862 :
863 678 : if (!hapd->conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
864 0 : return -1;
865 :
866 678 : if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
867 0 : return -1;
868 :
869 678 : if (hapd->driver && hapd->driver->set_operstate)
870 676 : hapd->driver->set_operstate(hapd->drv_priv, 1);
871 :
872 678 : return 0;
873 : }
874 :
875 :
876 661 : static void hostapd_tx_queue_params(struct hostapd_iface *iface)
877 : {
878 661 : struct hostapd_data *hapd = iface->bss[0];
879 : int i;
880 : struct hostapd_tx_queue_params *p;
881 :
882 3305 : for (i = 0; i < NUM_TX_QUEUES; i++) {
883 2644 : p = &iface->conf->tx_queue[i];
884 :
885 2644 : if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
886 : p->cwmax, p->burst)) {
887 0 : wpa_printf(MSG_DEBUG, "Failed to set TX queue "
888 : "parameters for queue %d.", i);
889 : /* Continue anyway */
890 : }
891 : }
892 661 : }
893 :
894 :
895 0 : static int hostapd_set_acl_list(struct hostapd_data *hapd,
896 : struct mac_acl_entry *mac_acl,
897 : int n_entries, u8 accept_acl)
898 : {
899 : struct hostapd_acl_params *acl_params;
900 : int i, err;
901 :
902 0 : acl_params = os_zalloc(sizeof(*acl_params) +
903 0 : (n_entries * sizeof(acl_params->mac_acl[0])));
904 0 : if (!acl_params)
905 0 : return -ENOMEM;
906 :
907 0 : for (i = 0; i < n_entries; i++)
908 0 : os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
909 : ETH_ALEN);
910 :
911 0 : acl_params->acl_policy = accept_acl;
912 0 : acl_params->num_mac_acl = n_entries;
913 :
914 0 : err = hostapd_drv_set_acl(hapd, acl_params);
915 :
916 0 : os_free(acl_params);
917 :
918 0 : return err;
919 : }
920 :
921 :
922 661 : static void hostapd_set_acl(struct hostapd_data *hapd)
923 : {
924 661 : struct hostapd_config *conf = hapd->iconf;
925 : int err;
926 : u8 accept_acl;
927 :
928 661 : if (hapd->iface->drv_max_acl_mac_addrs == 0)
929 661 : return;
930 0 : if (!(conf->bss[0]->num_accept_mac || conf->bss[0]->num_deny_mac))
931 0 : return;
932 :
933 0 : if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
934 0 : if (conf->bss[0]->num_accept_mac) {
935 0 : accept_acl = 1;
936 0 : err = hostapd_set_acl_list(hapd,
937 0 : conf->bss[0]->accept_mac,
938 0 : conf->bss[0]->num_accept_mac,
939 : accept_acl);
940 0 : if (err) {
941 0 : wpa_printf(MSG_DEBUG, "Failed to set accept acl");
942 0 : return;
943 : }
944 : } else {
945 0 : wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
946 : }
947 0 : } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
948 0 : if (conf->bss[0]->num_deny_mac) {
949 0 : accept_acl = 0;
950 0 : err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
951 0 : conf->bss[0]->num_deny_mac,
952 : accept_acl);
953 0 : if (err) {
954 0 : wpa_printf(MSG_DEBUG, "Failed to set deny acl");
955 0 : return;
956 : }
957 : } else {
958 0 : wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
959 : }
960 : }
961 : }
962 :
963 :
964 13 : static int start_ctrl_iface_bss(struct hostapd_data *hapd)
965 : {
966 26 : if (!hapd->iface->interfaces ||
967 13 : !hapd->iface->interfaces->ctrl_iface_init)
968 0 : return 0;
969 :
970 13 : if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
971 0 : wpa_printf(MSG_ERROR,
972 : "Failed to setup control interface for %s",
973 0 : hapd->conf->iface);
974 0 : return -1;
975 : }
976 :
977 13 : return 0;
978 : }
979 :
980 :
981 1223 : static int start_ctrl_iface(struct hostapd_iface *iface)
982 : {
983 : size_t i;
984 :
985 1223 : if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
986 126 : return 0;
987 :
988 2206 : for (i = 0; i < iface->num_bss; i++) {
989 1109 : struct hostapd_data *hapd = iface->bss[i];
990 1109 : if (iface->interfaces->ctrl_iface_init(hapd)) {
991 0 : wpa_printf(MSG_ERROR,
992 : "Failed to setup control interface for %s",
993 0 : hapd->conf->iface);
994 0 : return -1;
995 : }
996 : }
997 :
998 1097 : return 0;
999 : }
1000 :
1001 :
1002 0 : static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1003 : {
1004 0 : struct hostapd_iface *iface = eloop_ctx;
1005 :
1006 0 : if (!iface->wait_channel_update) {
1007 0 : wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1008 0 : return;
1009 : }
1010 :
1011 : /*
1012 : * It is possible that the existing channel list is acceptable, so try
1013 : * to proceed.
1014 : */
1015 0 : wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1016 0 : setup_interface2(iface);
1017 : }
1018 :
1019 :
1020 577 : void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1021 : {
1022 577 : if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1023 1136 : return;
1024 :
1025 18 : wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1026 18 : eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1027 18 : setup_interface2(iface);
1028 : }
1029 :
1030 :
1031 678 : static int setup_interface(struct hostapd_iface *iface)
1032 : {
1033 678 : struct hostapd_data *hapd = iface->bss[0];
1034 : size_t i;
1035 :
1036 : /*
1037 : * It is possible that setup_interface() is called after the interface
1038 : * was disabled etc., in which case driver_ap_teardown is possibly set
1039 : * to 1. Clear it here so any other key/station deletion, which is not
1040 : * part of a teardown flow, would also call the relevant driver
1041 : * callbacks.
1042 : */
1043 678 : iface->driver_ap_teardown = 0;
1044 :
1045 678 : if (!iface->phy[0]) {
1046 665 : const char *phy = hostapd_drv_get_radio_name(hapd);
1047 665 : if (phy) {
1048 663 : wpa_printf(MSG_DEBUG, "phy: %s", phy);
1049 663 : os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1050 : }
1051 : }
1052 :
1053 : /*
1054 : * Make sure that all BSSes get configured with a pointer to the same
1055 : * driver interface.
1056 : */
1057 684 : for (i = 1; i < iface->num_bss; i++) {
1058 6 : iface->bss[i]->driver = hapd->driver;
1059 6 : iface->bss[i]->drv_priv = hapd->drv_priv;
1060 : }
1061 :
1062 678 : if (hostapd_validate_bssid_configuration(iface))
1063 0 : return -1;
1064 :
1065 : /*
1066 : * Initialize control interfaces early to allow external monitoring of
1067 : * channel setup operations that may take considerable amount of time
1068 : * especially for DFS cases.
1069 : */
1070 678 : if (start_ctrl_iface(iface))
1071 0 : return -1;
1072 :
1073 678 : if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1074 : char country[4], previous_country[4];
1075 :
1076 19 : hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1077 19 : if (hostapd_get_country(hapd, previous_country) < 0)
1078 0 : previous_country[0] = '\0';
1079 :
1080 19 : os_memcpy(country, hapd->iconf->country, 3);
1081 19 : country[3] = '\0';
1082 19 : if (hostapd_set_country(hapd, country) < 0) {
1083 0 : wpa_printf(MSG_ERROR, "Failed to set country code");
1084 18 : return -1;
1085 : }
1086 :
1087 19 : wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1088 : previous_country, country);
1089 :
1090 19 : if (os_strncmp(previous_country, country, 2) != 0) {
1091 18 : wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1092 18 : iface->wait_channel_update = 1;
1093 18 : eloop_register_timeout(5, 0,
1094 : channel_list_update_timeout,
1095 : iface, NULL);
1096 18 : return 0;
1097 : }
1098 : }
1099 :
1100 660 : return setup_interface2(iface);
1101 : }
1102 :
1103 :
1104 678 : static int setup_interface2(struct hostapd_iface *iface)
1105 : {
1106 678 : iface->wait_channel_update = 0;
1107 :
1108 678 : if (hostapd_get_hw_features(iface)) {
1109 : /* Not all drivers support this yet, so continue without hw
1110 : * feature data. */
1111 : } else {
1112 676 : int ret = hostapd_select_hw_mode(iface);
1113 676 : if (ret < 0) {
1114 2 : wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1115 : "channel. (%d)", ret);
1116 2 : goto fail;
1117 : }
1118 674 : if (ret == 1) {
1119 9 : wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1120 9 : return 0;
1121 : }
1122 665 : ret = hostapd_check_ht_capab(iface);
1123 665 : if (ret < 0)
1124 2 : goto fail;
1125 663 : if (ret == 1) {
1126 26 : wpa_printf(MSG_DEBUG, "Interface initialization will "
1127 : "be completed in a callback");
1128 26 : return 0;
1129 : }
1130 :
1131 637 : if (iface->conf->ieee80211h)
1132 1 : wpa_printf(MSG_DEBUG, "DFS support is enabled");
1133 : }
1134 639 : return hostapd_setup_interface_complete(iface, 0);
1135 :
1136 : fail:
1137 4 : hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1138 4 : wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1139 4 : if (iface->interfaces && iface->interfaces->terminate_on_error)
1140 0 : eloop_terminate();
1141 4 : return -1;
1142 : }
1143 :
1144 :
1145 : /**
1146 : * hostapd_setup_interface_complete - Complete interface setup
1147 : *
1148 : * This function is called when previous steps in the interface setup has been
1149 : * completed. This can also start operations, e.g., DFS, that will require
1150 : * additional processing before interface is ready to be enabled. Such
1151 : * operations will call this function from eloop callbacks when finished.
1152 : */
1153 669 : int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1154 : {
1155 669 : struct hostapd_data *hapd = iface->bss[0];
1156 : size_t j;
1157 : u8 *prev_addr;
1158 :
1159 669 : if (err)
1160 3 : goto fail;
1161 :
1162 666 : wpa_printf(MSG_DEBUG, "Completing interface initialization");
1163 666 : if (iface->conf->channel) {
1164 : #ifdef NEED_AP_MLME
1165 : int res;
1166 : #endif /* NEED_AP_MLME */
1167 :
1168 664 : iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1169 1992 : wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1170 : "Frequency: %d MHz",
1171 664 : hostapd_hw_mode_txt(iface->conf->hw_mode),
1172 664 : iface->conf->channel, iface->freq);
1173 :
1174 : #ifdef NEED_AP_MLME
1175 : /* Check DFS */
1176 664 : res = hostapd_handle_dfs(iface);
1177 664 : if (res <= 0) {
1178 1 : if (res < 0)
1179 1 : goto fail;
1180 0 : return res;
1181 : }
1182 : #endif /* NEED_AP_MLME */
1183 :
1184 4641 : if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1185 663 : hapd->iconf->channel,
1186 663 : hapd->iconf->ieee80211n,
1187 663 : hapd->iconf->ieee80211ac,
1188 663 : hapd->iconf->secondary_channel,
1189 663 : hapd->iconf->vht_oper_chwidth,
1190 663 : hapd->iconf->vht_oper_centr_freq_seg0_idx,
1191 663 : hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1192 0 : wpa_printf(MSG_ERROR, "Could not set channel for "
1193 : "kernel driver");
1194 0 : goto fail;
1195 : }
1196 : }
1197 :
1198 665 : if (iface->current_mode) {
1199 663 : if (hostapd_prepare_rates(iface, iface->current_mode)) {
1200 0 : wpa_printf(MSG_ERROR, "Failed to prepare rates "
1201 : "table.");
1202 0 : hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1203 : HOSTAPD_LEVEL_WARNING,
1204 : "Failed to prepare rates table.");
1205 0 : goto fail;
1206 : }
1207 : }
1208 :
1209 666 : if (hapd->iconf->rts_threshold > -1 &&
1210 1 : hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1211 0 : wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1212 : "kernel driver");
1213 0 : goto fail;
1214 : }
1215 :
1216 668 : if (hapd->iconf->fragm_threshold > -1 &&
1217 3 : hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1218 0 : wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1219 : "for kernel driver");
1220 0 : goto fail;
1221 : }
1222 :
1223 665 : prev_addr = hapd->own_addr;
1224 :
1225 1333 : for (j = 0; j < iface->num_bss; j++) {
1226 672 : hapd = iface->bss[j];
1227 672 : if (j)
1228 7 : os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1229 672 : if (hostapd_setup_bss(hapd, j == 0))
1230 4 : goto fail;
1231 668 : if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1232 656 : prev_addr = hapd->own_addr;
1233 : }
1234 661 : hapd = iface->bss[0];
1235 :
1236 661 : hostapd_tx_queue_params(iface);
1237 :
1238 661 : ap_list_init(iface);
1239 :
1240 661 : hostapd_set_acl(hapd);
1241 :
1242 661 : if (hostapd_driver_commit(hapd) < 0) {
1243 0 : wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1244 : "configuration", __func__);
1245 0 : goto fail;
1246 : }
1247 :
1248 : /*
1249 : * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1250 : * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1251 : * mode), the interface is up only after driver_commit, so initialize
1252 : * WPS after driver_commit.
1253 : */
1254 1329 : for (j = 0; j < iface->num_bss; j++) {
1255 668 : if (hostapd_init_wps_complete(iface->bss[j]))
1256 0 : goto fail;
1257 : }
1258 :
1259 661 : hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1260 661 : wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1261 661 : if (hapd->setup_complete_cb)
1262 126 : hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1263 :
1264 661 : wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1265 661 : iface->bss[0]->conf->iface);
1266 661 : if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1267 2 : iface->interfaces->terminate_on_error--;
1268 :
1269 661 : return 0;
1270 :
1271 : fail:
1272 8 : wpa_printf(MSG_ERROR, "Interface initialization failed");
1273 8 : hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1274 8 : wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1275 8 : if (iface->interfaces && iface->interfaces->terminate_on_error)
1276 0 : eloop_terminate();
1277 8 : return -1;
1278 : }
1279 :
1280 :
1281 : /**
1282 : * hostapd_setup_interface - Setup of an interface
1283 : * @iface: Pointer to interface data.
1284 : * Returns: 0 on success, -1 on failure
1285 : *
1286 : * Initializes the driver interface, validates the configuration,
1287 : * and sets driver parameters based on the configuration.
1288 : * Flushes old stations, sets the channel, encryption,
1289 : * beacons, and WDS links based on the configuration.
1290 : *
1291 : * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1292 : * or DFS operations, this function returns 0 before such operations have been
1293 : * completed. The pending operations are registered into eloop and will be
1294 : * completed from eloop callbacks. Those callbacks end up calling
1295 : * hostapd_setup_interface_complete() once setup has been completed.
1296 : */
1297 678 : int hostapd_setup_interface(struct hostapd_iface *iface)
1298 : {
1299 : int ret;
1300 :
1301 678 : ret = setup_interface(iface);
1302 678 : if (ret) {
1303 7 : wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1304 7 : iface->bss[0]->conf->iface);
1305 7 : return -1;
1306 : }
1307 :
1308 671 : return 0;
1309 : }
1310 :
1311 :
1312 : /**
1313 : * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1314 : * @hapd_iface: Pointer to interface data
1315 : * @conf: Pointer to per-interface configuration
1316 : * @bss: Pointer to per-BSS configuration for this BSS
1317 : * Returns: Pointer to allocated BSS data
1318 : *
1319 : * This function is used to allocate per-BSS data structure. This data will be
1320 : * freed after hostapd_cleanup() is called for it during interface
1321 : * deinitialization.
1322 : */
1323 : struct hostapd_data *
1324 699 : hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1325 : struct hostapd_config *conf,
1326 : struct hostapd_bss_config *bss)
1327 : {
1328 : struct hostapd_data *hapd;
1329 :
1330 699 : hapd = os_zalloc(sizeof(*hapd));
1331 699 : if (hapd == NULL)
1332 0 : return NULL;
1333 :
1334 699 : hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1335 699 : hapd->iconf = conf;
1336 699 : hapd->conf = bss;
1337 699 : hapd->iface = hapd_iface;
1338 699 : hapd->driver = hapd->iconf->driver;
1339 699 : hapd->ctrl_sock = -1;
1340 :
1341 699 : return hapd;
1342 : }
1343 :
1344 :
1345 699 : static void hostapd_bss_deinit(struct hostapd_data *hapd)
1346 : {
1347 699 : wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1348 699 : hapd->conf->iface);
1349 699 : hostapd_free_stas(hapd);
1350 699 : hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1351 699 : hostapd_clear_wep(hapd);
1352 699 : hostapd_cleanup(hapd);
1353 699 : }
1354 :
1355 :
1356 680 : void hostapd_interface_deinit(struct hostapd_iface *iface)
1357 : {
1358 : int j;
1359 :
1360 680 : wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1361 680 : if (iface == NULL)
1362 680 : return;
1363 :
1364 : #ifdef CONFIG_IEEE80211N
1365 : #ifdef NEED_AP_MLME
1366 680 : hostapd_stop_setup_timers(iface);
1367 680 : eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
1368 : #endif /* NEED_AP_MLME */
1369 : #endif /* CONFIG_IEEE80211N */
1370 680 : eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1371 680 : iface->wait_channel_update = 0;
1372 :
1373 1365 : for (j = iface->num_bss - 1; j >= 0; j--)
1374 685 : hostapd_bss_deinit(iface->bss[j]);
1375 : }
1376 :
1377 :
1378 680 : void hostapd_interface_free(struct hostapd_iface *iface)
1379 : {
1380 : size_t j;
1381 680 : wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1382 1365 : for (j = 0; j < iface->num_bss; j++) {
1383 685 : wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1384 685 : __func__, iface->bss[j]);
1385 685 : os_free(iface->bss[j]);
1386 : }
1387 680 : hostapd_cleanup_iface(iface);
1388 680 : }
1389 :
1390 :
1391 : /**
1392 : * hostapd_init - Allocate and initialize per-interface data
1393 : * @config_file: Path to the configuration file
1394 : * Returns: Pointer to the allocated interface data or %NULL on failure
1395 : *
1396 : * This function is used to allocate main data structures for per-interface
1397 : * data. The allocated data buffer will be freed by calling
1398 : * hostapd_cleanup_iface().
1399 : */
1400 9 : struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1401 : const char *config_file)
1402 : {
1403 9 : struct hostapd_iface *hapd_iface = NULL;
1404 9 : struct hostapd_config *conf = NULL;
1405 : struct hostapd_data *hapd;
1406 : size_t i;
1407 :
1408 9 : hapd_iface = os_zalloc(sizeof(*hapd_iface));
1409 9 : if (hapd_iface == NULL)
1410 0 : goto fail;
1411 :
1412 9 : hapd_iface->config_fname = os_strdup(config_file);
1413 9 : if (hapd_iface->config_fname == NULL)
1414 0 : goto fail;
1415 :
1416 9 : conf = interfaces->config_read_cb(hapd_iface->config_fname);
1417 9 : if (conf == NULL)
1418 0 : goto fail;
1419 9 : hapd_iface->conf = conf;
1420 :
1421 9 : hapd_iface->num_bss = conf->num_bss;
1422 9 : hapd_iface->bss = os_calloc(conf->num_bss,
1423 : sizeof(struct hostapd_data *));
1424 9 : if (hapd_iface->bss == NULL)
1425 0 : goto fail;
1426 :
1427 18 : for (i = 0; i < conf->num_bss; i++) {
1428 18 : hapd = hapd_iface->bss[i] =
1429 9 : hostapd_alloc_bss_data(hapd_iface, conf,
1430 9 : conf->bss[i]);
1431 9 : if (hapd == NULL)
1432 0 : goto fail;
1433 9 : hapd->msg_ctx = hapd;
1434 : }
1435 :
1436 9 : return hapd_iface;
1437 :
1438 : fail:
1439 0 : wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1440 : config_file);
1441 0 : if (conf)
1442 0 : hostapd_config_free(conf);
1443 0 : if (hapd_iface) {
1444 0 : os_free(hapd_iface->config_fname);
1445 0 : os_free(hapd_iface->bss);
1446 0 : wpa_printf(MSG_DEBUG, "%s: free iface %p",
1447 : __func__, hapd_iface);
1448 0 : os_free(hapd_iface);
1449 : }
1450 0 : return NULL;
1451 : }
1452 :
1453 :
1454 14 : static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1455 : {
1456 : size_t i, j;
1457 :
1458 27 : for (i = 0; i < interfaces->count; i++) {
1459 14 : struct hostapd_iface *iface = interfaces->iface[i];
1460 35 : for (j = 0; j < iface->num_bss; j++) {
1461 22 : struct hostapd_data *hapd = iface->bss[j];
1462 22 : if (os_strcmp(ifname, hapd->conf->iface) == 0)
1463 1 : return 1;
1464 : }
1465 : }
1466 :
1467 13 : return 0;
1468 : }
1469 :
1470 :
1471 : /**
1472 : * hostapd_interface_init_bss - Read configuration file and init BSS data
1473 : *
1474 : * This function is used to parse configuration file for a BSS. This BSS is
1475 : * added to an existing interface sharing the same radio (if any) or a new
1476 : * interface is created if this is the first interface on a radio. This
1477 : * allocate memory for the BSS. No actual driver operations are started.
1478 : *
1479 : * This is similar to hostapd_interface_init(), but for a case where the
1480 : * configuration is used to add a single BSS instead of all BSSes for a radio.
1481 : */
1482 : struct hostapd_iface *
1483 21 : hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
1484 : const char *config_fname, int debug)
1485 : {
1486 21 : struct hostapd_iface *new_iface = NULL, *iface = NULL;
1487 : struct hostapd_data *hapd;
1488 : int k;
1489 : size_t i, bss_idx;
1490 :
1491 21 : if (!phy || !*phy)
1492 0 : return NULL;
1493 :
1494 21 : for (i = 0; i < interfaces->count; i++) {
1495 14 : if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
1496 14 : iface = interfaces->iface[i];
1497 14 : break;
1498 : }
1499 : }
1500 :
1501 21 : wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
1502 : config_fname, phy, iface ? "" : " --> new PHY");
1503 21 : if (iface) {
1504 : struct hostapd_config *conf;
1505 : struct hostapd_bss_config **tmp_conf;
1506 : struct hostapd_data **tmp_bss;
1507 : struct hostapd_bss_config *bss;
1508 : const char *ifname;
1509 :
1510 : /* Add new BSS to existing iface */
1511 14 : conf = interfaces->config_read_cb(config_fname);
1512 14 : if (conf == NULL)
1513 0 : return NULL;
1514 14 : if (conf->num_bss > 1) {
1515 0 : wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
1516 0 : hostapd_config_free(conf);
1517 0 : return NULL;
1518 : }
1519 :
1520 14 : ifname = conf->bss[0]->iface;
1521 14 : if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
1522 1 : wpa_printf(MSG_ERROR,
1523 : "Interface name %s already in use", ifname);
1524 1 : hostapd_config_free(conf);
1525 1 : return NULL;
1526 : }
1527 :
1528 26 : tmp_conf = os_realloc_array(
1529 26 : iface->conf->bss, iface->conf->num_bss + 1,
1530 : sizeof(struct hostapd_bss_config *));
1531 13 : tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
1532 : sizeof(struct hostapd_data *));
1533 13 : if (tmp_bss)
1534 13 : iface->bss = tmp_bss;
1535 13 : if (tmp_conf) {
1536 13 : iface->conf->bss = tmp_conf;
1537 13 : iface->conf->last_bss = tmp_conf[0];
1538 : }
1539 13 : if (tmp_bss == NULL || tmp_conf == NULL) {
1540 0 : hostapd_config_free(conf);
1541 0 : return NULL;
1542 : }
1543 13 : bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
1544 13 : iface->conf->num_bss++;
1545 :
1546 13 : hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
1547 13 : if (hapd == NULL) {
1548 0 : iface->conf->num_bss--;
1549 0 : hostapd_config_free(conf);
1550 0 : return NULL;
1551 : }
1552 13 : iface->conf->last_bss = bss;
1553 13 : iface->bss[iface->num_bss] = hapd;
1554 13 : hapd->msg_ctx = hapd;
1555 :
1556 13 : bss_idx = iface->num_bss++;
1557 13 : conf->num_bss--;
1558 13 : conf->bss[0] = NULL;
1559 13 : hostapd_config_free(conf);
1560 : } else {
1561 : /* Add a new iface with the first BSS */
1562 7 : new_iface = iface = hostapd_init(interfaces, config_fname);
1563 7 : if (!iface)
1564 0 : return NULL;
1565 7 : os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1566 7 : iface->interfaces = interfaces;
1567 7 : bss_idx = 0;
1568 : }
1569 :
1570 20 : for (k = 0; k < debug; k++) {
1571 0 : if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
1572 0 : iface->bss[bss_idx]->conf->logger_stdout_level--;
1573 : }
1574 :
1575 20 : if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
1576 0 : !hostapd_drv_none(iface->bss[bss_idx])) {
1577 0 : wpa_printf(MSG_ERROR, "Interface name not specified in %s",
1578 : config_fname);
1579 0 : if (new_iface)
1580 0 : hostapd_interface_deinit_free(new_iface);
1581 0 : return NULL;
1582 : }
1583 :
1584 20 : return iface;
1585 : }
1586 :
1587 :
1588 554 : void hostapd_interface_deinit_free(struct hostapd_iface *iface)
1589 : {
1590 : const struct wpa_driver_ops *driver;
1591 : void *drv_priv;
1592 :
1593 554 : wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1594 554 : if (iface == NULL)
1595 554 : return;
1596 1108 : wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
1597 554 : __func__, (unsigned int) iface->num_bss,
1598 554 : (unsigned int) iface->conf->num_bss);
1599 554 : driver = iface->bss[0]->driver;
1600 554 : drv_priv = iface->bss[0]->drv_priv;
1601 554 : hostapd_interface_deinit(iface);
1602 554 : wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1603 : __func__, driver, drv_priv);
1604 554 : if (driver && driver->hapd_deinit && drv_priv)
1605 538 : driver->hapd_deinit(drv_priv);
1606 554 : hostapd_interface_free(iface);
1607 : }
1608 :
1609 :
1610 18 : static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
1611 : void *drv_priv,
1612 : struct hostapd_iface *hapd_iface)
1613 : {
1614 : size_t j;
1615 :
1616 18 : wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1617 : __func__, driver, drv_priv);
1618 18 : if (driver && driver->hapd_deinit && drv_priv) {
1619 14 : driver->hapd_deinit(drv_priv);
1620 28 : for (j = 0; j < hapd_iface->num_bss; j++) {
1621 14 : wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
1622 : __func__, (int) j,
1623 14 : hapd_iface->bss[j]->drv_priv);
1624 14 : if (hapd_iface->bss[j]->drv_priv == drv_priv)
1625 14 : hapd_iface->bss[j]->drv_priv = NULL;
1626 : }
1627 : }
1628 18 : }
1629 :
1630 :
1631 551 : int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
1632 : {
1633 551 : if (hapd_iface->bss[0]->drv_priv != NULL) {
1634 0 : wpa_printf(MSG_ERROR, "Interface %s already enabled",
1635 0 : hapd_iface->conf->bss[0]->iface);
1636 0 : return -1;
1637 : }
1638 :
1639 551 : wpa_printf(MSG_DEBUG, "Enable interface %s",
1640 551 : hapd_iface->conf->bss[0]->iface);
1641 :
1642 551 : if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1643 8 : wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
1644 8 : return -1;
1645 : }
1646 :
1647 1086 : if (hapd_iface->interfaces == NULL ||
1648 1086 : hapd_iface->interfaces->driver_init == NULL ||
1649 543 : hapd_iface->interfaces->driver_init(hapd_iface))
1650 0 : return -1;
1651 :
1652 543 : if (hostapd_setup_interface(hapd_iface)) {
1653 7 : hostapd_deinit_driver(hapd_iface->bss[0]->driver,
1654 7 : hapd_iface->bss[0]->drv_priv,
1655 : hapd_iface);
1656 7 : return -1;
1657 : }
1658 :
1659 536 : return 0;
1660 : }
1661 :
1662 :
1663 1 : int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
1664 : {
1665 : size_t j;
1666 :
1667 1 : wpa_printf(MSG_DEBUG, "Reload interface %s",
1668 1 : hapd_iface->conf->bss[0]->iface);
1669 2 : for (j = 0; j < hapd_iface->num_bss; j++)
1670 1 : hostapd_set_security_params(hapd_iface->conf->bss[j]);
1671 1 : if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1672 0 : wpa_printf(MSG_ERROR, "Updated configuration is invalid");
1673 0 : return -1;
1674 : }
1675 1 : hostapd_clear_old(hapd_iface);
1676 2 : for (j = 0; j < hapd_iface->num_bss; j++)
1677 1 : hostapd_reload_bss(hapd_iface->bss[j]);
1678 :
1679 1 : return 0;
1680 : }
1681 :
1682 :
1683 11 : int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
1684 : {
1685 : size_t j;
1686 : const struct wpa_driver_ops *driver;
1687 : void *drv_priv;
1688 :
1689 11 : if (hapd_iface == NULL)
1690 0 : return -1;
1691 11 : wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1692 11 : driver = hapd_iface->bss[0]->driver;
1693 11 : drv_priv = hapd_iface->bss[0]->drv_priv;
1694 :
1695 11 : hapd_iface->driver_ap_teardown =
1696 11 : !!(hapd_iface->drv_flags &
1697 : WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
1698 :
1699 : /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
1700 22 : for (j = 0; j < hapd_iface->num_bss; j++) {
1701 11 : struct hostapd_data *hapd = hapd_iface->bss[j];
1702 11 : hostapd_free_stas(hapd);
1703 11 : hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1704 11 : hostapd_clear_wep(hapd);
1705 11 : hostapd_free_hapd_data(hapd);
1706 : }
1707 :
1708 11 : hostapd_deinit_driver(driver, drv_priv, hapd_iface);
1709 :
1710 : /* From hostapd_cleanup_iface: These were initialized in
1711 : * hostapd_setup_interface and hostapd_setup_interface_complete
1712 : */
1713 11 : hostapd_cleanup_iface_partial(hapd_iface);
1714 :
1715 11 : wpa_printf(MSG_DEBUG, "Interface %s disabled",
1716 11 : hapd_iface->bss[0]->conf->iface);
1717 11 : hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
1718 11 : return 0;
1719 : }
1720 :
1721 :
1722 : static struct hostapd_iface *
1723 545 : hostapd_iface_alloc(struct hapd_interfaces *interfaces)
1724 : {
1725 : struct hostapd_iface **iface, *hapd_iface;
1726 :
1727 545 : iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
1728 : sizeof(struct hostapd_iface *));
1729 545 : if (iface == NULL)
1730 0 : return NULL;
1731 545 : interfaces->iface = iface;
1732 1090 : hapd_iface = interfaces->iface[interfaces->count] =
1733 545 : os_zalloc(sizeof(*hapd_iface));
1734 545 : if (hapd_iface == NULL) {
1735 0 : wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1736 : "the interface", __func__);
1737 0 : return NULL;
1738 : }
1739 545 : interfaces->count++;
1740 545 : hapd_iface->interfaces = interfaces;
1741 :
1742 545 : return hapd_iface;
1743 : }
1744 :
1745 :
1746 : static struct hostapd_config *
1747 542 : hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
1748 : const char *ctrl_iface)
1749 : {
1750 : struct hostapd_bss_config *bss;
1751 : struct hostapd_config *conf;
1752 :
1753 : /* Allocates memory for bss and conf */
1754 542 : conf = hostapd_config_defaults();
1755 542 : if (conf == NULL) {
1756 0 : wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1757 : "configuration", __func__);
1758 0 : return NULL;
1759 : }
1760 :
1761 542 : conf->driver = wpa_drivers[0];
1762 542 : if (conf->driver == NULL) {
1763 0 : wpa_printf(MSG_ERROR, "No driver wrappers registered!");
1764 0 : hostapd_config_free(conf);
1765 0 : return NULL;
1766 : }
1767 :
1768 542 : bss = conf->last_bss = conf->bss[0];
1769 :
1770 542 : os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
1771 542 : bss->ctrl_interface = os_strdup(ctrl_iface);
1772 542 : if (bss->ctrl_interface == NULL) {
1773 0 : hostapd_config_free(conf);
1774 0 : return NULL;
1775 : }
1776 :
1777 : /* Reading configuration file skipped, will be done in SET!
1778 : * From reading the configuration till the end has to be done in
1779 : * SET
1780 : */
1781 542 : return conf;
1782 : }
1783 :
1784 :
1785 545 : static struct hostapd_iface * hostapd_data_alloc(
1786 : struct hapd_interfaces *interfaces, struct hostapd_config *conf)
1787 : {
1788 : size_t i;
1789 545 : struct hostapd_iface *hapd_iface =
1790 545 : interfaces->iface[interfaces->count - 1];
1791 : struct hostapd_data *hapd;
1792 :
1793 545 : hapd_iface->conf = conf;
1794 545 : hapd_iface->num_bss = conf->num_bss;
1795 :
1796 545 : hapd_iface->bss = os_zalloc(conf->num_bss *
1797 : sizeof(struct hostapd_data *));
1798 545 : if (hapd_iface->bss == NULL)
1799 0 : return NULL;
1800 :
1801 1096 : for (i = 0; i < conf->num_bss; i++) {
1802 1102 : hapd = hapd_iface->bss[i] =
1803 551 : hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
1804 551 : if (hapd == NULL)
1805 0 : return NULL;
1806 551 : hapd->msg_ctx = hapd;
1807 : }
1808 :
1809 545 : hapd_iface->interfaces = interfaces;
1810 :
1811 545 : return hapd_iface;
1812 : }
1813 :
1814 :
1815 566 : int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
1816 : {
1817 566 : struct hostapd_config *conf = NULL;
1818 566 : struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
1819 : struct hostapd_data *hapd;
1820 : char *ptr;
1821 : size_t i, j;
1822 566 : const char *conf_file = NULL, *phy_name = NULL;
1823 :
1824 566 : if (os_strncmp(buf, "bss_config=", 11) == 0) {
1825 : char *pos;
1826 21 : phy_name = buf + 11;
1827 21 : pos = os_strchr(phy_name, ':');
1828 21 : if (!pos)
1829 0 : return -1;
1830 21 : *pos++ = '\0';
1831 21 : conf_file = pos;
1832 21 : if (!os_strlen(conf_file))
1833 0 : return -1;
1834 :
1835 21 : hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
1836 : conf_file, 0);
1837 21 : if (!hapd_iface)
1838 1 : return -1;
1839 20 : for (j = 0; j < interfaces->count; j++) {
1840 13 : if (interfaces->iface[j] == hapd_iface)
1841 13 : break;
1842 : }
1843 20 : if (j == interfaces->count) {
1844 : struct hostapd_iface **tmp;
1845 7 : tmp = os_realloc_array(interfaces->iface,
1846 7 : interfaces->count + 1,
1847 : sizeof(struct hostapd_iface *));
1848 7 : if (!tmp) {
1849 0 : hostapd_interface_deinit_free(hapd_iface);
1850 0 : return -1;
1851 : }
1852 7 : interfaces->iface = tmp;
1853 7 : interfaces->iface[interfaces->count++] = hapd_iface;
1854 7 : new_iface = hapd_iface;
1855 : }
1856 :
1857 20 : if (new_iface) {
1858 14 : if (interfaces->driver_init(hapd_iface) ||
1859 7 : hostapd_setup_interface(hapd_iface)) {
1860 0 : interfaces->count--;
1861 0 : goto fail;
1862 : }
1863 : } else {
1864 : /* Assign new BSS with bss[0]'s driver info */
1865 13 : hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
1866 13 : hapd->driver = hapd_iface->bss[0]->driver;
1867 13 : hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
1868 13 : os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
1869 : ETH_ALEN);
1870 :
1871 26 : if (start_ctrl_iface_bss(hapd) < 0 ||
1872 23 : (hapd_iface->state == HAPD_IFACE_ENABLED &&
1873 10 : hostapd_setup_bss(hapd, -1))) {
1874 0 : hostapd_cleanup(hapd);
1875 0 : hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
1876 0 : hapd_iface->conf->num_bss--;
1877 0 : hapd_iface->num_bss--;
1878 0 : wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
1879 0 : __func__, hapd, hapd->conf->iface);
1880 0 : os_free(hapd);
1881 0 : return -1;
1882 : }
1883 : }
1884 20 : return 0;
1885 : }
1886 :
1887 545 : ptr = os_strchr(buf, ' ');
1888 545 : if (ptr == NULL)
1889 0 : return -1;
1890 545 : *ptr++ = '\0';
1891 :
1892 545 : if (os_strncmp(ptr, "config=", 7) == 0)
1893 3 : conf_file = ptr + 7;
1894 :
1895 613 : for (i = 0; i < interfaces->count; i++) {
1896 68 : if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
1897 : buf)) {
1898 0 : wpa_printf(MSG_INFO, "Cannot add interface - it "
1899 : "already exists");
1900 0 : return -1;
1901 : }
1902 : }
1903 :
1904 545 : hapd_iface = hostapd_iface_alloc(interfaces);
1905 545 : if (hapd_iface == NULL) {
1906 0 : wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1907 : "for interface", __func__);
1908 0 : goto fail;
1909 : }
1910 :
1911 545 : if (conf_file && interfaces->config_read_cb) {
1912 3 : conf = interfaces->config_read_cb(conf_file);
1913 6 : if (conf && conf->bss)
1914 3 : os_strlcpy(conf->bss[0]->iface, buf,
1915 : sizeof(conf->bss[0]->iface));
1916 : } else
1917 542 : conf = hostapd_config_alloc(interfaces, buf, ptr);
1918 545 : if (conf == NULL || conf->bss == NULL) {
1919 0 : wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1920 : "for configuration", __func__);
1921 0 : goto fail;
1922 : }
1923 :
1924 545 : hapd_iface = hostapd_data_alloc(interfaces, conf);
1925 545 : if (hapd_iface == NULL) {
1926 0 : wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1927 : "for hostapd", __func__);
1928 0 : goto fail;
1929 : }
1930 :
1931 545 : if (start_ctrl_iface(hapd_iface) < 0)
1932 0 : goto fail;
1933 :
1934 545 : wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface);
1935 :
1936 545 : return 0;
1937 :
1938 : fail:
1939 0 : if (conf)
1940 0 : hostapd_config_free(conf);
1941 0 : if (hapd_iface) {
1942 0 : if (hapd_iface->bss) {
1943 0 : for (i = 0; i < hapd_iface->num_bss; i++) {
1944 0 : hapd = hapd_iface->bss[i];
1945 0 : if (!hapd)
1946 0 : continue;
1947 0 : if (hapd_iface->interfaces &&
1948 0 : hapd_iface->interfaces->ctrl_iface_deinit)
1949 0 : hapd_iface->interfaces->
1950 0 : ctrl_iface_deinit(hapd);
1951 0 : wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1952 0 : __func__, hapd_iface->bss[i],
1953 0 : hapd->conf->iface);
1954 0 : os_free(hapd);
1955 0 : hapd_iface->bss[i] = NULL;
1956 : }
1957 0 : os_free(hapd_iface->bss);
1958 : }
1959 0 : wpa_printf(MSG_DEBUG, "%s: free iface %p",
1960 : __func__, hapd_iface);
1961 0 : os_free(hapd_iface);
1962 : }
1963 0 : return -1;
1964 : }
1965 :
1966 :
1967 16 : static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
1968 : {
1969 : size_t i;
1970 :
1971 16 : wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
1972 :
1973 : /* Remove hostapd_data only if it has already been initialized */
1974 16 : if (idx < iface->num_bss) {
1975 14 : struct hostapd_data *hapd = iface->bss[idx];
1976 :
1977 14 : hostapd_bss_deinit(hapd);
1978 14 : wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1979 14 : __func__, hapd, hapd->conf->iface);
1980 14 : hostapd_config_free_bss(hapd->conf);
1981 14 : os_free(hapd);
1982 :
1983 14 : iface->num_bss--;
1984 :
1985 17 : for (i = idx; i < iface->num_bss; i++)
1986 3 : iface->bss[i] = iface->bss[i + 1];
1987 : } else {
1988 2 : hostapd_config_free_bss(iface->conf->bss[idx]);
1989 2 : iface->conf->bss[idx] = NULL;
1990 : }
1991 :
1992 16 : iface->conf->num_bss--;
1993 19 : for (i = idx; i < iface->conf->num_bss; i++)
1994 3 : iface->conf->bss[i] = iface->conf->bss[i + 1];
1995 :
1996 16 : return 0;
1997 : }
1998 :
1999 :
2000 3098 : int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
2001 : {
2002 : struct hostapd_iface *hapd_iface;
2003 3098 : size_t i, j, k = 0;
2004 :
2005 4218 : for (i = 0; i < interfaces->count; i++) {
2006 1688 : hapd_iface = interfaces->iface[i];
2007 1688 : if (hapd_iface == NULL)
2008 0 : return -1;
2009 1688 : if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
2010 552 : wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
2011 552 : hapd_iface->driver_ap_teardown =
2012 552 : !!(hapd_iface->drv_flags &
2013 : WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2014 :
2015 552 : hostapd_interface_deinit_free(hapd_iface);
2016 552 : k = i;
2017 1162 : while (k < (interfaces->count - 1)) {
2018 116 : interfaces->iface[k] =
2019 58 : interfaces->iface[k + 1];
2020 58 : k++;
2021 : }
2022 552 : interfaces->count--;
2023 552 : return 0;
2024 : }
2025 :
2026 2276 : for (j = 0; j < hapd_iface->conf->num_bss; j++) {
2027 1156 : if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
2028 16 : hapd_iface->driver_ap_teardown =
2029 16 : !(hapd_iface->drv_flags &
2030 : WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2031 16 : return hostapd_remove_bss(hapd_iface, j);
2032 : }
2033 : }
2034 : }
2035 2530 : return -1;
2036 : }
2037 :
2038 :
2039 : /**
2040 : * hostapd_new_assoc_sta - Notify that a new station associated with the AP
2041 : * @hapd: Pointer to BSS data
2042 : * @sta: Pointer to the associated STA data
2043 : * @reassoc: 1 to indicate this was a re-association; 0 = first association
2044 : *
2045 : * This function will be called whenever a station associates with the AP. It
2046 : * can be called from ieee802_11.c for drivers that export MLME to hostapd and
2047 : * from drv_callbacks.c based on driver events for drivers that take care of
2048 : * management frames (IEEE 802.11 authentication and association) internally.
2049 : */
2050 1021 : void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
2051 : int reassoc)
2052 : {
2053 1021 : if (hapd->tkip_countermeasures) {
2054 0 : hostapd_drv_sta_deauth(hapd, sta->addr,
2055 : WLAN_REASON_MICHAEL_MIC_FAILURE);
2056 1021 : return;
2057 : }
2058 :
2059 1021 : hostapd_prune_associations(hapd, sta->addr);
2060 :
2061 : /* IEEE 802.11F (IAPP) */
2062 1021 : if (hapd->conf->ieee802_11f)
2063 0 : iapp_new_station(hapd->iapp, sta);
2064 :
2065 : #ifdef CONFIG_P2P
2066 256 : if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
2067 22 : sta->no_p2p_set = 1;
2068 22 : hapd->num_sta_no_p2p++;
2069 22 : if (hapd->num_sta_no_p2p == 1)
2070 19 : hostapd_p2p_non_p2p_sta_connected(hapd);
2071 : }
2072 : #endif /* CONFIG_P2P */
2073 :
2074 : /* Start accounting here, if IEEE 802.1X and WPA are not used.
2075 : * IEEE 802.1X/WPA code will start accounting after the station has
2076 : * been authorized. */
2077 1021 : if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
2078 186 : ap_sta_set_authorized(hapd, sta, 1);
2079 186 : os_get_reltime(&sta->connected_time);
2080 186 : accounting_sta_start(hapd, sta);
2081 : }
2082 :
2083 : /* Start IEEE 802.1X authentication process for new stations */
2084 1021 : ieee802_1x_new_station(hapd, sta);
2085 1021 : if (reassoc) {
2086 8 : if (sta->auth_alg != WLAN_AUTH_FT &&
2087 4 : !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
2088 4 : wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
2089 : } else
2090 1017 : wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
2091 :
2092 1021 : if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
2093 7147 : wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
2094 : "for " MACSTR " (%d seconds - ap_max_inactivity)",
2095 6126 : __func__, MAC2STR(sta->addr),
2096 1021 : hapd->conf->ap_max_inactivity);
2097 1021 : eloop_cancel_timeout(ap_handle_timer, hapd, sta);
2098 1021 : eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
2099 : ap_handle_timer, hapd, sta);
2100 : }
2101 : }
2102 :
2103 :
2104 1598 : const char * hostapd_state_text(enum hostapd_iface_state s)
2105 : {
2106 1598 : switch (s) {
2107 : case HAPD_IFACE_UNINITIALIZED:
2108 672 : return "UNINITIALIZED";
2109 : case HAPD_IFACE_DISABLED:
2110 37 : return "DISABLED";
2111 : case HAPD_IFACE_COUNTRY_UPDATE:
2112 38 : return "COUNTRY_UPDATE";
2113 : case HAPD_IFACE_ACS:
2114 22 : return "ACS";
2115 : case HAPD_IFACE_HT_SCAN:
2116 58 : return "HT_SCAN";
2117 : case HAPD_IFACE_DFS:
2118 2 : return "DFS";
2119 : case HAPD_IFACE_ENABLED:
2120 769 : return "ENABLED";
2121 : }
2122 :
2123 0 : return "UNKNOWN";
2124 : }
2125 :
2126 :
2127 740 : void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2128 : {
2129 1480 : wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2130 740 : iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2131 : hostapd_state_text(s));
2132 740 : iface->state = s;
2133 740 : }
2134 :
2135 :
2136 : #ifdef NEED_AP_MLME
2137 :
2138 4 : static void free_beacon_data(struct beacon_data *beacon)
2139 : {
2140 4 : os_free(beacon->head);
2141 4 : beacon->head = NULL;
2142 4 : os_free(beacon->tail);
2143 4 : beacon->tail = NULL;
2144 4 : os_free(beacon->probe_resp);
2145 4 : beacon->probe_resp = NULL;
2146 4 : os_free(beacon->beacon_ies);
2147 4 : beacon->beacon_ies = NULL;
2148 4 : os_free(beacon->proberesp_ies);
2149 4 : beacon->proberesp_ies = NULL;
2150 4 : os_free(beacon->assocresp_ies);
2151 4 : beacon->assocresp_ies = NULL;
2152 4 : }
2153 :
2154 :
2155 4 : static int hostapd_build_beacon_data(struct hostapd_iface *iface,
2156 : struct beacon_data *beacon)
2157 : {
2158 : struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
2159 : struct wpa_driver_ap_params params;
2160 : int ret;
2161 4 : struct hostapd_data *hapd = iface->bss[0];
2162 :
2163 4 : os_memset(beacon, 0, sizeof(*beacon));
2164 4 : ret = ieee802_11_build_ap_params(hapd, ¶ms);
2165 4 : if (ret < 0)
2166 0 : return ret;
2167 :
2168 4 : ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
2169 : &proberesp_extra,
2170 : &assocresp_extra);
2171 4 : if (ret)
2172 0 : goto free_ap_params;
2173 :
2174 4 : ret = -1;
2175 4 : beacon->head = os_malloc(params.head_len);
2176 4 : if (!beacon->head)
2177 0 : goto free_ap_extra_ies;
2178 :
2179 4 : os_memcpy(beacon->head, params.head, params.head_len);
2180 4 : beacon->head_len = params.head_len;
2181 :
2182 4 : beacon->tail = os_malloc(params.tail_len);
2183 4 : if (!beacon->tail)
2184 0 : goto free_beacon;
2185 :
2186 4 : os_memcpy(beacon->tail, params.tail, params.tail_len);
2187 4 : beacon->tail_len = params.tail_len;
2188 :
2189 4 : if (params.proberesp != NULL) {
2190 0 : beacon->probe_resp = os_malloc(params.proberesp_len);
2191 0 : if (!beacon->probe_resp)
2192 0 : goto free_beacon;
2193 :
2194 0 : os_memcpy(beacon->probe_resp, params.proberesp,
2195 : params.proberesp_len);
2196 0 : beacon->probe_resp_len = params.proberesp_len;
2197 : }
2198 :
2199 : /* copy the extra ies */
2200 4 : if (beacon_extra) {
2201 4 : beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra));
2202 4 : if (!beacon->beacon_ies)
2203 0 : goto free_beacon;
2204 :
2205 4 : os_memcpy(beacon->beacon_ies,
2206 : beacon_extra->buf, wpabuf_len(beacon_extra));
2207 4 : beacon->beacon_ies_len = wpabuf_len(beacon_extra);
2208 : }
2209 :
2210 4 : if (proberesp_extra) {
2211 4 : beacon->proberesp_ies =
2212 4 : os_malloc(wpabuf_len(proberesp_extra));
2213 4 : if (!beacon->proberesp_ies)
2214 0 : goto free_beacon;
2215 :
2216 4 : os_memcpy(beacon->proberesp_ies, proberesp_extra->buf,
2217 : wpabuf_len(proberesp_extra));
2218 4 : beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
2219 : }
2220 :
2221 4 : if (assocresp_extra) {
2222 4 : beacon->assocresp_ies =
2223 4 : os_malloc(wpabuf_len(assocresp_extra));
2224 4 : if (!beacon->assocresp_ies)
2225 0 : goto free_beacon;
2226 :
2227 4 : os_memcpy(beacon->assocresp_ies, assocresp_extra->buf,
2228 : wpabuf_len(assocresp_extra));
2229 4 : beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
2230 : }
2231 :
2232 4 : ret = 0;
2233 : free_beacon:
2234 : /* if the function fails, the caller should not free beacon data */
2235 4 : if (ret)
2236 0 : free_beacon_data(beacon);
2237 :
2238 : free_ap_extra_ies:
2239 4 : hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
2240 : assocresp_extra);
2241 : free_ap_params:
2242 4 : ieee802_11_free_ap_params(¶ms);
2243 4 : return ret;
2244 : }
2245 :
2246 :
2247 : /*
2248 : * TODO: This flow currently supports only changing frequency within the
2249 : * same hw_mode. Any other changes to MAC parameters or provided settings (even
2250 : * width) are not supported.
2251 : */
2252 4 : static int hostapd_change_config_freq(struct hostapd_data *hapd,
2253 : struct hostapd_config *conf,
2254 : struct hostapd_freq_params *params,
2255 : struct hostapd_freq_params *old_params)
2256 : {
2257 : int channel;
2258 :
2259 4 : if (!params->channel) {
2260 : /* check if the new channel is supported by hw */
2261 2 : channel = hostapd_hw_get_channel(hapd, params->freq);
2262 2 : if (!channel)
2263 0 : return -1;
2264 : } else {
2265 2 : channel = params->channel;
2266 : }
2267 :
2268 : /* if a pointer to old_params is provided we save previous state */
2269 4 : if (old_params) {
2270 2 : old_params->channel = conf->channel;
2271 2 : old_params->ht_enabled = conf->ieee80211n;
2272 2 : old_params->sec_channel_offset = conf->secondary_channel;
2273 : }
2274 :
2275 4 : conf->channel = channel;
2276 4 : conf->ieee80211n = params->ht_enabled;
2277 4 : conf->secondary_channel = params->sec_channel_offset;
2278 :
2279 : /* TODO: maybe call here hostapd_config_check here? */
2280 :
2281 4 : return 0;
2282 : }
2283 :
2284 :
2285 2 : static int hostapd_fill_csa_settings(struct hostapd_iface *iface,
2286 : struct csa_settings *settings)
2287 : {
2288 : struct hostapd_freq_params old_freq;
2289 : int ret;
2290 :
2291 2 : os_memset(&old_freq, 0, sizeof(old_freq));
2292 2 : if (!iface || !iface->freq || iface->csa_in_progress)
2293 0 : return -1;
2294 :
2295 2 : ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
2296 : &settings->freq_params,
2297 : &old_freq);
2298 2 : if (ret)
2299 0 : return ret;
2300 :
2301 2 : ret = hostapd_build_beacon_data(iface, &settings->beacon_after);
2302 :
2303 : /* change back the configuration */
2304 2 : hostapd_change_config_freq(iface->bss[0], iface->conf,
2305 : &old_freq, NULL);
2306 :
2307 2 : if (ret)
2308 0 : return ret;
2309 :
2310 : /* set channel switch parameters for csa ie */
2311 2 : iface->cs_freq_params = settings->freq_params;
2312 2 : iface->cs_count = settings->cs_count;
2313 2 : iface->cs_block_tx = settings->block_tx;
2314 :
2315 2 : ret = hostapd_build_beacon_data(iface, &settings->beacon_csa);
2316 2 : if (ret) {
2317 0 : free_beacon_data(&settings->beacon_after);
2318 0 : return ret;
2319 : }
2320 :
2321 2 : settings->counter_offset_beacon = iface->cs_c_off_beacon;
2322 2 : settings->counter_offset_presp = iface->cs_c_off_proberesp;
2323 :
2324 2 : return 0;
2325 : }
2326 :
2327 :
2328 2 : void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
2329 : {
2330 2 : os_memset(&hapd->iface->cs_freq_params, 0,
2331 : sizeof(hapd->iface->cs_freq_params));
2332 2 : hapd->iface->cs_count = 0;
2333 2 : hapd->iface->cs_block_tx = 0;
2334 2 : hapd->iface->cs_c_off_beacon = 0;
2335 2 : hapd->iface->cs_c_off_proberesp = 0;
2336 2 : hapd->iface->csa_in_progress = 0;
2337 2 : }
2338 :
2339 :
2340 2 : int hostapd_switch_channel(struct hostapd_data *hapd,
2341 : struct csa_settings *settings)
2342 : {
2343 : int ret;
2344 2 : ret = hostapd_fill_csa_settings(hapd->iface, settings);
2345 2 : if (ret)
2346 0 : return ret;
2347 :
2348 2 : ret = hostapd_drv_switch_channel(hapd, settings);
2349 2 : free_beacon_data(&settings->beacon_csa);
2350 2 : free_beacon_data(&settings->beacon_after);
2351 :
2352 2 : if (ret) {
2353 : /* if we failed, clean cs parameters */
2354 2 : hostapd_cleanup_cs_params(hapd);
2355 2 : return ret;
2356 : }
2357 :
2358 0 : hapd->iface->csa_in_progress = 1;
2359 0 : return 0;
2360 : }
2361 :
2362 : #endif /* NEED_AP_MLME */
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