2 * hostapd / Initialization and configuration
3 * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
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"
20 #include "accounting.h"
24 #include "ieee802_1x.h"
25 #include "ieee802_11_auth.h"
26 #include "vlan_init.h"
28 #include "wps_hostapd.h"
29 #include "hw_features.h"
30 #include "wpa_auth_glue.h"
31 #include "ap_drv_ops.h"
32 #include "ap_config.h"
33 #include "p2p_hostapd.h"
38 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
39 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
40 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
41 static int setup_interface2(struct hostapd_iface *iface);
42 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
45 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
46 int (*cb)(struct hostapd_iface *iface,
47 void *ctx), void *ctx)
52 for (i = 0; i < interfaces->count; i++) {
53 ret = cb(interfaces->iface[i], ctx);
62 static void hostapd_reload_bss(struct hostapd_data *hapd)
64 struct hostapd_ssid *ssid;
66 #ifndef CONFIG_NO_RADIUS
67 radius_client_reconfig(hapd->radius, hapd->conf->radius);
68 #endif /* CONFIG_NO_RADIUS */
70 ssid = &hapd->conf->ssid;
71 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
72 ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
74 * Force PSK to be derived again since SSID or passphrase may
77 os_free(ssid->wpa_psk);
80 if (hostapd_setup_wpa_psk(hapd->conf)) {
81 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
82 "after reloading configuration");
85 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
86 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
88 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
90 if (hapd->conf->wpa && hapd->wpa_auth == NULL) {
91 hostapd_setup_wpa(hapd);
93 wpa_init_keys(hapd->wpa_auth);
94 } else if (hapd->conf->wpa) {
97 hostapd_reconfig_wpa(hapd);
98 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
99 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
100 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
101 "the kernel driver.");
102 } else if (hapd->wpa_auth) {
103 wpa_deinit(hapd->wpa_auth);
104 hapd->wpa_auth = NULL;
105 hostapd_set_privacy(hapd, 0);
106 hostapd_setup_encryption(hapd->conf->iface, hapd);
107 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
110 ieee802_11_set_beacon(hapd);
111 hostapd_update_wps(hapd);
113 if (hapd->conf->ssid.ssid_set &&
114 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
115 hapd->conf->ssid.ssid_len)) {
116 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
117 /* try to continue */
119 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
123 static void hostapd_clear_old(struct hostapd_iface *iface)
128 * Deauthenticate all stations since the new configuration may not
129 * allow them to use the BSS anymore.
131 for (j = 0; j < iface->num_bss; j++) {
132 hostapd_flush_old_stations(iface->bss[j],
133 WLAN_REASON_PREV_AUTH_NOT_VALID);
134 hostapd_broadcast_wep_clear(iface->bss[j]);
136 #ifndef CONFIG_NO_RADIUS
137 /* TODO: update dynamic data based on changed configuration
138 * items (e.g., open/close sockets, etc.) */
139 radius_client_flush(iface->bss[j]->radius, 0);
140 #endif /* CONFIG_NO_RADIUS */
145 int hostapd_reload_config(struct hostapd_iface *iface)
147 struct hostapd_data *hapd = iface->bss[0];
148 struct hostapd_config *newconf, *oldconf;
151 if (iface->config_fname == NULL) {
152 /* Only in-memory config in use - assume it has been updated */
153 hostapd_clear_old(iface);
154 for (j = 0; j < iface->num_bss; j++)
155 hostapd_reload_bss(iface->bss[j]);
159 if (iface->interfaces == NULL ||
160 iface->interfaces->config_read_cb == NULL)
162 newconf = iface->interfaces->config_read_cb(iface->config_fname);
166 hostapd_clear_old(iface);
168 oldconf = hapd->iconf;
169 iface->conf = newconf;
171 for (j = 0; j < iface->num_bss; j++) {
172 hapd = iface->bss[j];
173 hapd->iconf = newconf;
174 hapd->conf = newconf->bss[j];
175 hostapd_reload_bss(hapd);
178 hostapd_config_free(oldconf);
185 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
190 for (i = 0; i < NUM_WEP_KEYS; i++) {
191 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
192 0, NULL, 0, NULL, 0)) {
193 wpa_printf(MSG_DEBUG, "Failed to clear default "
194 "encryption keys (ifname=%s keyidx=%d)",
198 #ifdef CONFIG_IEEE80211W
199 if (hapd->conf->ieee80211w) {
200 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
201 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
204 wpa_printf(MSG_DEBUG, "Failed to clear "
205 "default mgmt encryption keys "
206 "(ifname=%s keyidx=%d)", ifname, i);
210 #endif /* CONFIG_IEEE80211W */
214 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
216 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
221 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
224 struct hostapd_ssid *ssid = &hapd->conf->ssid;
227 if (ssid->wep.default_len &&
228 hostapd_drv_set_key(hapd->conf->iface,
229 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
230 1, NULL, 0, ssid->wep.key[idx],
231 ssid->wep.len[idx])) {
232 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
240 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
242 if (!hapd->started) {
243 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
244 __func__, hapd->conf->iface);
249 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
250 iapp_deinit(hapd->iapp);
252 accounting_deinit(hapd);
253 hostapd_deinit_wpa(hapd);
255 hostapd_acl_deinit(hapd);
256 #ifndef CONFIG_NO_RADIUS
257 radius_client_deinit(hapd->radius);
259 radius_das_deinit(hapd->radius_das);
260 hapd->radius_das = NULL;
261 #endif /* CONFIG_NO_RADIUS */
263 hostapd_deinit_wps(hapd);
265 authsrv_deinit(hapd);
267 if (hapd->interface_added &&
268 hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
269 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
273 os_free(hapd->probereq_cb);
274 hapd->probereq_cb = NULL;
277 wpabuf_free(hapd->p2p_beacon_ie);
278 hapd->p2p_beacon_ie = NULL;
279 wpabuf_free(hapd->p2p_probe_resp_ie);
280 hapd->p2p_probe_resp_ie = NULL;
281 #endif /* CONFIG_P2P */
283 wpabuf_free(hapd->time_adv);
285 #ifdef CONFIG_INTERWORKING
286 gas_serv_deinit(hapd);
287 #endif /* CONFIG_INTERWORKING */
290 os_free(hapd->tmp_eap_user.identity);
291 os_free(hapd->tmp_eap_user.password);
292 #endif /* CONFIG_SQLITE */
297 * hostapd_cleanup - Per-BSS cleanup (deinitialization)
298 * @hapd: Pointer to BSS data
300 * This function is used to free all per-BSS data structures and resources.
301 * Most of the modules that are initialized in hostapd_setup_bss() are
302 * deinitialized here.
304 static void hostapd_cleanup(struct hostapd_data *hapd)
306 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
308 if (hapd->iface->interfaces &&
309 hapd->iface->interfaces->ctrl_iface_deinit)
310 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
311 hostapd_free_hapd_data(hapd);
315 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
317 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
318 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
319 iface->hw_features = NULL;
320 os_free(iface->current_rates);
321 iface->current_rates = NULL;
322 os_free(iface->basic_rates);
323 iface->basic_rates = NULL;
324 ap_list_deinit(iface);
329 * hostapd_cleanup_iface - Complete per-interface cleanup
330 * @iface: Pointer to interface data
332 * This function is called after per-BSS data structures are deinitialized
333 * with hostapd_cleanup().
335 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
337 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
338 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
340 hostapd_cleanup_iface_partial(iface);
341 hostapd_config_free(iface->conf);
344 os_free(iface->config_fname);
346 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
351 static void hostapd_clear_wep(struct hostapd_data *hapd)
353 if (hapd->drv_priv) {
354 hostapd_set_privacy(hapd, 0);
355 hostapd_broadcast_wep_clear(hapd);
360 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
364 hostapd_broadcast_wep_set(hapd);
366 if (hapd->conf->ssid.wep.default_len) {
367 hostapd_set_privacy(hapd, 1);
372 * When IEEE 802.1X is not enabled, the driver may need to know how to
373 * set authentication algorithms for static WEP.
375 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
377 for (i = 0; i < 4; i++) {
378 if (hapd->conf->ssid.wep.key[i] &&
379 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
380 i == hapd->conf->ssid.wep.idx, NULL, 0,
381 hapd->conf->ssid.wep.key[i],
382 hapd->conf->ssid.wep.len[i])) {
383 wpa_printf(MSG_WARNING, "Could not set WEP "
387 if (hapd->conf->ssid.wep.key[i] &&
388 i == hapd->conf->ssid.wep.idx)
389 hostapd_set_privacy(hapd, 1);
396 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
401 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
404 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Flushing old station entries");
405 if (hostapd_flush(hapd)) {
406 wpa_msg(hapd->msg_ctx, MSG_WARNING, "Could not connect to "
410 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
411 os_memset(addr, 0xff, ETH_ALEN);
412 hostapd_drv_sta_deauth(hapd, addr, reason);
413 hostapd_free_stas(hapd);
420 * hostapd_validate_bssid_configuration - Validate BSSID configuration
421 * @iface: Pointer to interface data
422 * Returns: 0 on success, -1 on failure
424 * This function is used to validate that the configured BSSIDs are valid.
426 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
428 u8 mask[ETH_ALEN] = { 0 };
429 struct hostapd_data *hapd = iface->bss[0];
430 unsigned int i = iface->conf->num_bss, bits = 0, j;
433 if (hostapd_drv_none(hapd))
436 /* Generate BSSID mask that is large enough to cover the BSSIDs. */
438 /* Determine the bits necessary to cover the number of BSSIDs. */
439 for (i--; i; i >>= 1)
442 /* Determine the bits necessary to any configured BSSIDs,
443 if they are higher than the number of BSSIDs. */
444 for (j = 0; j < iface->conf->num_bss; j++) {
445 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
451 for (i = 0; i < ETH_ALEN; i++) {
453 iface->conf->bss[j]->bssid[i] ^
461 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
467 while (mask[i] != 0) {
477 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
482 os_memset(mask, 0xff, ETH_ALEN);
484 for (i = 5; i > 5 - j; i--)
491 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
492 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
497 for (i = 0; i < ETH_ALEN; i++) {
498 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
499 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
500 " for start address " MACSTR ".",
501 MAC2STR(mask), MAC2STR(hapd->own_addr));
502 wpa_printf(MSG_ERROR, "Start address must be the "
503 "first address in the block (i.e., addr "
504 "AND mask == addr).");
513 static int mac_in_conf(struct hostapd_config *conf, const void *a)
517 for (i = 0; i < conf->num_bss; i++) {
518 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
527 #ifndef CONFIG_NO_RADIUS
529 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
530 struct radius_das_attrs *attr)
537 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
538 struct radius_das_attrs *attr)
540 struct sta_info *sta = NULL;
544 sta = ap_get_sta(hapd, attr->sta_addr);
546 if (sta == NULL && attr->acct_session_id &&
547 attr->acct_session_id_len == 17) {
548 for (sta = hapd->sta_list; sta; sta = sta->next) {
549 os_snprintf(buf, sizeof(buf), "%08X-%08X",
550 sta->acct_session_id_hi,
551 sta->acct_session_id_lo);
552 if (os_memcmp(attr->acct_session_id, buf, 17) == 0)
557 if (sta == NULL && attr->cui) {
558 for (sta = hapd->sta_list; sta; sta = sta->next) {
560 cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
561 if (cui && wpabuf_len(cui) == attr->cui_len &&
562 os_memcmp(wpabuf_head(cui), attr->cui,
568 if (sta == NULL && attr->user_name) {
569 for (sta = hapd->sta_list; sta; sta = sta->next) {
572 identity = ieee802_1x_get_identity(sta->eapol_sm,
575 identity_len == attr->user_name_len &&
576 os_memcmp(identity, attr->user_name, identity_len)
586 static enum radius_das_res
587 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
589 struct hostapd_data *hapd = ctx;
590 struct sta_info *sta;
592 if (hostapd_das_nas_mismatch(hapd, attr))
593 return RADIUS_DAS_NAS_MISMATCH;
595 sta = hostapd_das_find_sta(hapd, attr);
597 return RADIUS_DAS_SESSION_NOT_FOUND;
599 hostapd_drv_sta_deauth(hapd, sta->addr,
600 WLAN_REASON_PREV_AUTH_NOT_VALID);
601 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
603 return RADIUS_DAS_SUCCESS;
606 #endif /* CONFIG_NO_RADIUS */
610 * hostapd_setup_bss - Per-BSS setup (initialization)
611 * @hapd: Pointer to BSS data
612 * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
613 * but interface may exist
615 * This function is used to initialize all per-BSS data structures and
616 * resources. This gets called in a loop for each BSS when an interface is
617 * initialized. Most of the modules that are initialized here will be
618 * deinitialized in hostapd_cleanup().
620 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
622 struct hostapd_bss_config *conf = hapd->conf;
623 u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
624 int ssid_len, set_ssid;
625 char force_ifname[IFNAMSIZ];
626 u8 if_addr[ETH_ALEN];
628 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
629 __func__, hapd, hapd->conf->iface, first);
632 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
633 __func__, hapd->conf->iface);
638 if (!first || first == -1) {
639 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
640 /* Allocate the next available BSSID. */
642 inc_byte_array(hapd->own_addr, ETH_ALEN);
643 } while (mac_in_conf(hapd->iconf, hapd->own_addr));
645 /* Allocate the configured BSSID. */
646 os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
648 if (hostapd_mac_comp(hapd->own_addr,
649 hapd->iface->bss[0]->own_addr) ==
651 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
652 "BSSID set to the MAC address of "
653 "the radio", hapd->conf->iface);
658 hapd->interface_added = 1;
659 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
660 hapd->conf->iface, hapd->own_addr, hapd,
661 &hapd->drv_priv, force_ifname, if_addr,
662 hapd->conf->bridge[0] ? hapd->conf->bridge :
663 NULL, first == -1)) {
664 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
665 MACSTR ")", MAC2STR(hapd->own_addr));
666 hapd->interface_added = 0;
671 if (conf->wmm_enabled < 0)
672 conf->wmm_enabled = hapd->iconf->ieee80211n;
674 hostapd_flush_old_stations(hapd, WLAN_REASON_PREV_AUTH_NOT_VALID);
675 hostapd_set_privacy(hapd, 0);
677 hostapd_broadcast_wep_clear(hapd);
678 if (hostapd_setup_encryption(hapd->conf->iface, hapd))
682 * Fetch the SSID from the system and use it or,
683 * if one was specified in the config file, verify they
686 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
688 wpa_printf(MSG_ERROR, "Could not read SSID from system");
691 if (conf->ssid.ssid_set) {
693 * If SSID is specified in the config file and it differs
694 * from what is being used then force installation of the
697 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
698 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
701 * No SSID in the config file; just use the one we got
705 conf->ssid.ssid_len = ssid_len;
706 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
709 if (!hostapd_drv_none(hapd)) {
710 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
712 hapd->conf->iface, MAC2STR(hapd->own_addr),
713 wpa_ssid_txt(hapd->conf->ssid.ssid,
714 hapd->conf->ssid.ssid_len));
717 if (hostapd_setup_wpa_psk(conf)) {
718 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
722 /* Set SSID for the kernel driver (to be used in beacon and probe
723 * response frames) */
724 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
725 conf->ssid.ssid_len)) {
726 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
730 if (wpa_debug_level == MSG_MSGDUMP)
731 conf->radius->msg_dumps = 1;
732 #ifndef CONFIG_NO_RADIUS
733 hapd->radius = radius_client_init(hapd, conf->radius);
734 if (hapd->radius == NULL) {
735 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
739 if (hapd->conf->radius_das_port) {
740 struct radius_das_conf das_conf;
741 os_memset(&das_conf, 0, sizeof(das_conf));
742 das_conf.port = hapd->conf->radius_das_port;
743 das_conf.shared_secret = hapd->conf->radius_das_shared_secret;
744 das_conf.shared_secret_len =
745 hapd->conf->radius_das_shared_secret_len;
746 das_conf.client_addr = &hapd->conf->radius_das_client_addr;
747 das_conf.time_window = hapd->conf->radius_das_time_window;
748 das_conf.require_event_timestamp =
749 hapd->conf->radius_das_require_event_timestamp;
751 das_conf.disconnect = hostapd_das_disconnect;
752 hapd->radius_das = radius_das_init(&das_conf);
753 if (hapd->radius_das == NULL) {
754 wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
759 #endif /* CONFIG_NO_RADIUS */
761 if (hostapd_acl_init(hapd)) {
762 wpa_printf(MSG_ERROR, "ACL initialization failed.");
765 if (hostapd_init_wps(hapd, conf))
768 if (authsrv_init(hapd) < 0)
771 if (ieee802_1x_init(hapd)) {
772 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
776 if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
779 if (accounting_init(hapd)) {
780 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
784 if (hapd->conf->ieee802_11f &&
785 (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
786 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
791 #ifdef CONFIG_INTERWORKING
792 if (gas_serv_init(hapd)) {
793 wpa_printf(MSG_ERROR, "GAS server initialization failed");
797 if (conf->qos_map_set_len &&
798 hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
799 conf->qos_map_set_len)) {
800 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
803 #endif /* CONFIG_INTERWORKING */
805 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
806 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
810 if (!hapd->conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
813 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
816 if (hapd->driver && hapd->driver->set_operstate)
817 hapd->driver->set_operstate(hapd->drv_priv, 1);
823 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
825 struct hostapd_data *hapd = iface->bss[0];
827 struct hostapd_tx_queue_params *p;
829 for (i = 0; i < NUM_TX_QUEUES; i++) {
830 p = &iface->conf->tx_queue[i];
832 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
833 p->cwmax, p->burst)) {
834 wpa_printf(MSG_DEBUG, "Failed to set TX queue "
835 "parameters for queue %d.", i);
836 /* Continue anyway */
842 static int hostapd_set_acl_list(struct hostapd_data *hapd,
843 struct mac_acl_entry *mac_acl,
844 int n_entries, u8 accept_acl)
846 struct hostapd_acl_params *acl_params;
849 acl_params = os_zalloc(sizeof(*acl_params) +
850 (n_entries * sizeof(acl_params->mac_acl[0])));
854 for (i = 0; i < n_entries; i++)
855 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
858 acl_params->acl_policy = accept_acl;
859 acl_params->num_mac_acl = n_entries;
861 err = hostapd_drv_set_acl(hapd, acl_params);
869 static void hostapd_set_acl(struct hostapd_data *hapd)
871 struct hostapd_config *conf = hapd->iconf;
875 if (hapd->iface->drv_max_acl_mac_addrs == 0)
877 if (!(conf->bss[0]->num_accept_mac || conf->bss[0]->num_deny_mac))
880 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
881 if (conf->bss[0]->num_accept_mac) {
883 err = hostapd_set_acl_list(hapd,
884 conf->bss[0]->accept_mac,
885 conf->bss[0]->num_accept_mac,
888 wpa_printf(MSG_DEBUG, "Failed to set accept acl");
892 wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
894 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
895 if (conf->bss[0]->num_deny_mac) {
897 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
898 conf->bss[0]->num_deny_mac,
901 wpa_printf(MSG_DEBUG, "Failed to set deny acl");
905 wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
911 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
913 if (!hapd->iface->interfaces ||
914 !hapd->iface->interfaces->ctrl_iface_init)
917 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
918 wpa_printf(MSG_ERROR,
919 "Failed to setup control interface for %s",
928 static int start_ctrl_iface(struct hostapd_iface *iface)
932 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
935 for (i = 0; i < iface->num_bss; i++) {
936 struct hostapd_data *hapd = iface->bss[i];
937 if (iface->interfaces->ctrl_iface_init(hapd)) {
938 wpa_printf(MSG_ERROR,
939 "Failed to setup control interface for %s",
949 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
951 struct hostapd_iface *iface = eloop_ctx;
953 if (!iface->wait_channel_update) {
954 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
959 * It is possible that the existing channel list is acceptable, so try
962 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
963 setup_interface2(iface);
967 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
969 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
972 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
973 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
974 setup_interface2(iface);
978 static int setup_interface(struct hostapd_iface *iface)
980 struct hostapd_data *hapd = iface->bss[0];
983 if (!iface->phy[0]) {
984 const char *phy = hostapd_drv_get_radio_name(hapd);
986 wpa_printf(MSG_DEBUG, "phy: %s", phy);
987 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
992 * Make sure that all BSSes get configured with a pointer to the same
995 for (i = 1; i < iface->num_bss; i++) {
996 iface->bss[i]->driver = hapd->driver;
997 iface->bss[i]->drv_priv = hapd->drv_priv;
1000 if (hostapd_validate_bssid_configuration(iface))
1004 * Initialize control interfaces early to allow external monitoring of
1005 * channel setup operations that may take considerable amount of time
1006 * especially for DFS cases.
1008 if (start_ctrl_iface(iface))
1011 if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1012 char country[4], previous_country[4];
1014 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1015 if (hostapd_get_country(hapd, previous_country) < 0)
1016 previous_country[0] = '\0';
1018 os_memcpy(country, hapd->iconf->country, 3);
1020 if (hostapd_set_country(hapd, country) < 0) {
1021 wpa_printf(MSG_ERROR, "Failed to set country code");
1025 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1026 previous_country, country);
1028 if (os_strncmp(previous_country, country, 2) != 0) {
1029 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1030 iface->wait_channel_update = 1;
1031 eloop_register_timeout(5, 0,
1032 channel_list_update_timeout,
1038 return setup_interface2(iface);
1042 static int setup_interface2(struct hostapd_iface *iface)
1044 iface->wait_channel_update = 0;
1046 if (hostapd_get_hw_features(iface)) {
1047 /* Not all drivers support this yet, so continue without hw
1050 int ret = hostapd_select_hw_mode(iface);
1052 wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1053 "channel. (%d)", ret);
1057 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1060 ret = hostapd_check_ht_capab(iface);
1064 wpa_printf(MSG_DEBUG, "Interface initialization will "
1065 "be completed in a callback");
1069 if (iface->conf->ieee80211h)
1070 wpa_printf(MSG_DEBUG, "DFS support is enabled");
1072 return hostapd_setup_interface_complete(iface, 0);
1077 * hostapd_setup_interface_complete - Complete interface setup
1079 * This function is called when previous steps in the interface setup has been
1080 * completed. This can also start operations, e.g., DFS, that will require
1081 * additional processing before interface is ready to be enabled. Such
1082 * operations will call this function from eloop callbacks when finished.
1084 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1086 struct hostapd_data *hapd = iface->bss[0];
1091 wpa_printf(MSG_ERROR, "Interface initialization failed");
1092 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1093 if (iface->interfaces && iface->interfaces->terminate_on_error)
1098 wpa_printf(MSG_DEBUG, "Completing interface initialization");
1099 if (iface->conf->channel) {
1102 #endif /* NEED_AP_MLME */
1104 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1105 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1106 "Frequency: %d MHz",
1107 hostapd_hw_mode_txt(iface->conf->hw_mode),
1108 iface->conf->channel, iface->freq);
1112 res = hostapd_handle_dfs(iface);
1115 #endif /* NEED_AP_MLME */
1117 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1118 hapd->iconf->channel,
1119 hapd->iconf->ieee80211n,
1120 hapd->iconf->ieee80211ac,
1121 hapd->iconf->secondary_channel,
1122 hapd->iconf->vht_oper_chwidth,
1123 hapd->iconf->vht_oper_centr_freq_seg0_idx,
1124 hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1125 wpa_printf(MSG_ERROR, "Could not set channel for "
1131 if (iface->current_mode) {
1132 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1133 wpa_printf(MSG_ERROR, "Failed to prepare rates "
1135 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1136 HOSTAPD_LEVEL_WARNING,
1137 "Failed to prepare rates table.");
1142 if (hapd->iconf->rts_threshold > -1 &&
1143 hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1144 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1149 if (hapd->iconf->fragm_threshold > -1 &&
1150 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1151 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1152 "for kernel driver");
1156 prev_addr = hapd->own_addr;
1158 for (j = 0; j < iface->num_bss; j++) {
1159 hapd = iface->bss[j];
1161 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1162 if (hostapd_setup_bss(hapd, j == 0))
1164 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1165 prev_addr = hapd->own_addr;
1167 hapd = iface->bss[0];
1169 hostapd_tx_queue_params(iface);
1171 ap_list_init(iface);
1173 hostapd_set_acl(hapd);
1175 if (hostapd_driver_commit(hapd) < 0) {
1176 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1177 "configuration", __func__);
1182 * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1183 * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1184 * mode), the interface is up only after driver_commit, so initialize
1185 * WPS after driver_commit.
1187 for (j = 0; j < iface->num_bss; j++) {
1188 if (hostapd_init_wps_complete(iface->bss[j]))
1192 hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1193 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1194 if (hapd->setup_complete_cb)
1195 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1197 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1198 iface->bss[0]->conf->iface);
1199 if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1200 iface->interfaces->terminate_on_error--;
1207 * hostapd_setup_interface - Setup of an interface
1208 * @iface: Pointer to interface data.
1209 * Returns: 0 on success, -1 on failure
1211 * Initializes the driver interface, validates the configuration,
1212 * and sets driver parameters based on the configuration.
1213 * Flushes old stations, sets the channel, encryption,
1214 * beacons, and WDS links based on the configuration.
1216 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1217 * or DFS operations, this function returns 0 before such operations have been
1218 * completed. The pending operations are registered into eloop and will be
1219 * completed from eloop callbacks. Those callbacks end up calling
1220 * hostapd_setup_interface_complete() once setup has been completed.
1222 int hostapd_setup_interface(struct hostapd_iface *iface)
1226 ret = setup_interface(iface);
1228 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1229 iface->bss[0]->conf->iface);
1238 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1239 * @hapd_iface: Pointer to interface data
1240 * @conf: Pointer to per-interface configuration
1241 * @bss: Pointer to per-BSS configuration for this BSS
1242 * Returns: Pointer to allocated BSS data
1244 * This function is used to allocate per-BSS data structure. This data will be
1245 * freed after hostapd_cleanup() is called for it during interface
1248 struct hostapd_data *
1249 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1250 struct hostapd_config *conf,
1251 struct hostapd_bss_config *bss)
1253 struct hostapd_data *hapd;
1255 hapd = os_zalloc(sizeof(*hapd));
1259 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1262 hapd->iface = hapd_iface;
1263 hapd->driver = hapd->iconf->driver;
1264 hapd->ctrl_sock = -1;
1270 static void hostapd_bss_deinit(struct hostapd_data *hapd)
1272 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1274 hostapd_free_stas(hapd);
1275 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1276 hostapd_clear_wep(hapd);
1277 hostapd_cleanup(hapd);
1281 void hostapd_interface_deinit(struct hostapd_iface *iface)
1285 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1289 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1290 iface->wait_channel_update = 0;
1292 for (j = iface->num_bss - 1; j >= 0; j--)
1293 hostapd_bss_deinit(iface->bss[j]);
1297 void hostapd_interface_free(struct hostapd_iface *iface)
1300 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1301 for (j = 0; j < iface->num_bss; j++) {
1302 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1303 __func__, iface->bss[j]);
1304 os_free(iface->bss[j]);
1306 hostapd_cleanup_iface(iface);
1311 * hostapd_init - Allocate and initialize per-interface data
1312 * @config_file: Path to the configuration file
1313 * Returns: Pointer to the allocated interface data or %NULL on failure
1315 * This function is used to allocate main data structures for per-interface
1316 * data. The allocated data buffer will be freed by calling
1317 * hostapd_cleanup_iface().
1319 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1320 const char *config_file)
1322 struct hostapd_iface *hapd_iface = NULL;
1323 struct hostapd_config *conf = NULL;
1324 struct hostapd_data *hapd;
1327 hapd_iface = os_zalloc(sizeof(*hapd_iface));
1328 if (hapd_iface == NULL)
1331 hapd_iface->config_fname = os_strdup(config_file);
1332 if (hapd_iface->config_fname == NULL)
1335 conf = interfaces->config_read_cb(hapd_iface->config_fname);
1338 hapd_iface->conf = conf;
1340 hapd_iface->num_bss = conf->num_bss;
1341 hapd_iface->bss = os_calloc(conf->num_bss,
1342 sizeof(struct hostapd_data *));
1343 if (hapd_iface->bss == NULL)
1346 for (i = 0; i < conf->num_bss; i++) {
1347 hapd = hapd_iface->bss[i] =
1348 hostapd_alloc_bss_data(hapd_iface, conf,
1352 hapd->msg_ctx = hapd;
1358 wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1361 hostapd_config_free(conf);
1363 os_free(hapd_iface->config_fname);
1364 os_free(hapd_iface->bss);
1365 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1366 __func__, hapd_iface);
1367 os_free(hapd_iface);
1373 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1377 for (i = 0; i < interfaces->count; i++) {
1378 struct hostapd_iface *iface = interfaces->iface[i];
1379 for (j = 0; j < iface->num_bss; j++) {
1380 struct hostapd_data *hapd = iface->bss[j];
1381 if (os_strcmp(ifname, hapd->conf->iface) == 0)
1391 * hostapd_interface_init_bss - Read configuration file and init BSS data
1393 * This function is used to parse configuration file for a BSS. This BSS is
1394 * added to an existing interface sharing the same radio (if any) or a new
1395 * interface is created if this is the first interface on a radio. This
1396 * allocate memory for the BSS. No actual driver operations are started.
1398 * This is similar to hostapd_interface_init(), but for a case where the
1399 * configuration is used to add a single BSS instead of all BSSes for a radio.
1401 struct hostapd_iface *
1402 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
1403 const char *config_fname, int debug)
1405 struct hostapd_iface *new_iface = NULL, *iface = NULL;
1406 struct hostapd_data *hapd;
1413 for (i = 0; i < interfaces->count; i++) {
1414 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
1415 iface = interfaces->iface[i];
1420 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
1421 config_fname, phy, iface ? "" : " --> new PHY");
1423 struct hostapd_config *conf;
1424 struct hostapd_bss_config **tmp_conf;
1425 struct hostapd_data **tmp_bss;
1426 struct hostapd_bss_config *bss;
1429 /* Add new BSS to existing iface */
1430 conf = interfaces->config_read_cb(config_fname);
1433 if (conf->num_bss > 1) {
1434 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
1435 hostapd_config_free(conf);
1439 ifname = conf->bss[0]->iface;
1440 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
1441 wpa_printf(MSG_ERROR,
1442 "Interface name %s already in use", ifname);
1443 hostapd_config_free(conf);
1447 tmp_conf = os_realloc_array(
1448 iface->conf->bss, iface->conf->num_bss + 1,
1449 sizeof(struct hostapd_bss_config *));
1450 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
1451 sizeof(struct hostapd_data *));
1453 iface->bss = tmp_bss;
1455 iface->conf->bss = tmp_conf;
1456 iface->conf->last_bss = tmp_conf[0];
1458 if (tmp_bss == NULL || tmp_conf == NULL) {
1459 hostapd_config_free(conf);
1462 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
1463 iface->conf->num_bss++;
1465 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
1467 iface->conf->num_bss--;
1468 hostapd_config_free(conf);
1471 iface->conf->last_bss = bss;
1472 iface->bss[iface->num_bss] = hapd;
1473 hapd->msg_ctx = hapd;
1475 bss_idx = iface->num_bss++;
1477 conf->bss[0] = NULL;
1478 hostapd_config_free(conf);
1480 /* Add a new iface with the first BSS */
1481 new_iface = iface = hostapd_init(interfaces, config_fname);
1484 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1485 iface->interfaces = interfaces;
1489 for (k = 0; k < debug; k++) {
1490 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
1491 iface->bss[bss_idx]->conf->logger_stdout_level--;
1494 if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
1495 !hostapd_drv_none(iface->bss[bss_idx])) {
1496 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
1499 hostapd_interface_deinit_free(new_iface);
1507 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
1509 const struct wpa_driver_ops *driver;
1512 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1515 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
1516 __func__, (unsigned int) iface->num_bss,
1517 (unsigned int) iface->conf->num_bss);
1518 driver = iface->bss[0]->driver;
1519 drv_priv = iface->bss[0]->drv_priv;
1520 hostapd_interface_deinit(iface);
1521 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1522 __func__, driver, drv_priv);
1523 if (driver && driver->hapd_deinit && drv_priv)
1524 driver->hapd_deinit(drv_priv);
1525 hostapd_interface_free(iface);
1529 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
1531 if (hapd_iface->bss[0]->drv_priv != NULL) {
1532 wpa_printf(MSG_ERROR, "Interface %s already enabled",
1533 hapd_iface->conf->bss[0]->iface);
1537 wpa_printf(MSG_DEBUG, "Enable interface %s",
1538 hapd_iface->conf->bss[0]->iface);
1540 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1541 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
1545 if (hapd_iface->interfaces == NULL ||
1546 hapd_iface->interfaces->driver_init == NULL ||
1547 hapd_iface->interfaces->driver_init(hapd_iface))
1550 if (hostapd_setup_interface(hapd_iface)) {
1551 const struct wpa_driver_ops *driver;
1554 driver = hapd_iface->bss[0]->driver;
1555 drv_priv = hapd_iface->bss[0]->drv_priv;
1556 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1557 __func__, driver, drv_priv);
1558 if (driver && driver->hapd_deinit && drv_priv) {
1559 driver->hapd_deinit(drv_priv);
1560 hapd_iface->bss[0]->drv_priv = NULL;
1569 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
1573 wpa_printf(MSG_DEBUG, "Reload interface %s",
1574 hapd_iface->conf->bss[0]->iface);
1575 for (j = 0; j < hapd_iface->num_bss; j++)
1576 hostapd_set_security_params(hapd_iface->conf->bss[j]);
1577 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1578 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
1581 hostapd_clear_old(hapd_iface);
1582 for (j = 0; j < hapd_iface->num_bss; j++)
1583 hostapd_reload_bss(hapd_iface->bss[j]);
1589 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
1592 const struct wpa_driver_ops *driver;
1595 if (hapd_iface == NULL)
1597 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1598 driver = hapd_iface->bss[0]->driver;
1599 drv_priv = hapd_iface->bss[0]->drv_priv;
1601 /* whatever hostapd_interface_deinit does */
1602 for (j = 0; j < hapd_iface->num_bss; j++) {
1603 struct hostapd_data *hapd = hapd_iface->bss[j];
1604 hostapd_free_stas(hapd);
1605 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1606 hostapd_clear_wep(hapd);
1607 hostapd_free_hapd_data(hapd);
1610 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1611 __func__, driver, drv_priv);
1612 if (driver && driver->hapd_deinit && drv_priv) {
1613 driver->hapd_deinit(drv_priv);
1614 hapd_iface->bss[0]->drv_priv = NULL;
1617 /* From hostapd_cleanup_iface: These were initialized in
1618 * hostapd_setup_interface and hostapd_setup_interface_complete
1620 hostapd_cleanup_iface_partial(hapd_iface);
1622 wpa_printf(MSG_DEBUG, "Interface %s disabled",
1623 hapd_iface->bss[0]->conf->iface);
1624 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
1629 static struct hostapd_iface *
1630 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
1632 struct hostapd_iface **iface, *hapd_iface;
1634 iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
1635 sizeof(struct hostapd_iface *));
1638 interfaces->iface = iface;
1639 hapd_iface = interfaces->iface[interfaces->count] =
1640 os_zalloc(sizeof(*hapd_iface));
1641 if (hapd_iface == NULL) {
1642 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1643 "the interface", __func__);
1646 interfaces->count++;
1647 hapd_iface->interfaces = interfaces;
1653 static struct hostapd_config *
1654 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
1655 const char *ctrl_iface)
1657 struct hostapd_bss_config *bss;
1658 struct hostapd_config *conf;
1660 /* Allocates memory for bss and conf */
1661 conf = hostapd_config_defaults();
1663 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1664 "configuration", __func__);
1668 conf->driver = wpa_drivers[0];
1669 if (conf->driver == NULL) {
1670 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
1671 hostapd_config_free(conf);
1675 bss = conf->last_bss = conf->bss[0];
1677 os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
1678 bss->ctrl_interface = os_strdup(ctrl_iface);
1679 if (bss->ctrl_interface == NULL) {
1680 hostapd_config_free(conf);
1684 /* Reading configuration file skipped, will be done in SET!
1685 * From reading the configuration till the end has to be done in
1692 static struct hostapd_iface * hostapd_data_alloc(
1693 struct hapd_interfaces *interfaces, struct hostapd_config *conf)
1696 struct hostapd_iface *hapd_iface =
1697 interfaces->iface[interfaces->count - 1];
1698 struct hostapd_data *hapd;
1700 hapd_iface->conf = conf;
1701 hapd_iface->num_bss = conf->num_bss;
1703 hapd_iface->bss = os_zalloc(conf->num_bss *
1704 sizeof(struct hostapd_data *));
1705 if (hapd_iface->bss == NULL)
1708 for (i = 0; i < conf->num_bss; i++) {
1709 hapd = hapd_iface->bss[i] =
1710 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
1713 hapd->msg_ctx = hapd;
1716 hapd_iface->interfaces = interfaces;
1722 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
1724 struct hostapd_config *conf = NULL;
1725 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
1726 struct hostapd_data *hapd;
1729 const char *conf_file = NULL, *phy_name = NULL;
1731 if (os_strncmp(buf, "bss_config=", 11) == 0) {
1733 phy_name = buf + 11;
1734 pos = os_strchr(phy_name, ':');
1739 if (!os_strlen(conf_file))
1742 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
1746 for (j = 0; j < interfaces->count; j++) {
1747 if (interfaces->iface[j] == hapd_iface)
1750 if (j == interfaces->count) {
1751 struct hostapd_iface **tmp;
1752 tmp = os_realloc_array(interfaces->iface,
1753 interfaces->count + 1,
1754 sizeof(struct hostapd_iface *));
1756 hostapd_interface_deinit_free(hapd_iface);
1759 interfaces->iface = tmp;
1760 interfaces->iface[interfaces->count++] = hapd_iface;
1761 new_iface = hapd_iface;
1765 if (interfaces->driver_init(hapd_iface) ||
1766 hostapd_setup_interface(hapd_iface)) {
1767 interfaces->count--;
1771 /* Assign new BSS with bss[0]'s driver info */
1772 hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
1773 hapd->driver = hapd_iface->bss[0]->driver;
1774 hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
1775 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
1778 if (start_ctrl_iface_bss(hapd) < 0 ||
1779 (hapd_iface->state == HAPD_IFACE_ENABLED &&
1780 hostapd_setup_bss(hapd, -1))) {
1781 hapd_iface->conf->num_bss--;
1782 hapd_iface->num_bss--;
1783 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
1784 __func__, hapd, hapd->conf->iface);
1792 ptr = os_strchr(buf, ' ');
1797 if (os_strncmp(ptr, "config=", 7) == 0)
1798 conf_file = ptr + 7;
1800 for (i = 0; i < interfaces->count; i++) {
1801 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
1803 wpa_printf(MSG_INFO, "Cannot add interface - it "
1809 hapd_iface = hostapd_iface_alloc(interfaces);
1810 if (hapd_iface == NULL) {
1811 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1812 "for interface", __func__);
1816 if (conf_file && interfaces->config_read_cb) {
1817 conf = interfaces->config_read_cb(conf_file);
1818 if (conf && conf->bss)
1819 os_strlcpy(conf->bss[0]->iface, buf,
1820 sizeof(conf->bss[0]->iface));
1822 conf = hostapd_config_alloc(interfaces, buf, ptr);
1823 if (conf == NULL || conf->bss == NULL) {
1824 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1825 "for configuration", __func__);
1829 hapd_iface = hostapd_data_alloc(interfaces, conf);
1830 if (hapd_iface == NULL) {
1831 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1832 "for hostapd", __func__);
1836 if (start_ctrl_iface(hapd_iface) < 0)
1839 wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface);
1845 hostapd_config_free(conf);
1847 if (hapd_iface->bss) {
1848 for (i = 0; i < hapd_iface->num_bss; i++) {
1849 hapd = hapd_iface->bss[i];
1850 if (hapd && hapd_iface->interfaces &&
1851 hapd_iface->interfaces->ctrl_iface_deinit)
1852 hapd_iface->interfaces->
1853 ctrl_iface_deinit(hapd);
1854 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1855 __func__, hapd_iface->bss[i],
1856 hapd_iface->bss[i]->conf->iface);
1857 os_free(hapd_iface->bss[i]);
1859 os_free(hapd_iface->bss);
1861 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1862 __func__, hapd_iface);
1863 os_free(hapd_iface);
1869 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
1873 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
1875 /* Remove hostapd_data only if it has already been initialized */
1876 if (idx < iface->num_bss) {
1877 struct hostapd_data *hapd = iface->bss[idx];
1879 hostapd_bss_deinit(hapd);
1880 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1881 __func__, hapd, hapd->conf->iface);
1882 hostapd_config_free_bss(hapd->conf);
1887 for (i = idx; i < iface->num_bss; i++)
1888 iface->bss[i] = iface->bss[i + 1];
1890 hostapd_config_free_bss(iface->conf->bss[idx]);
1891 iface->conf->bss[idx] = NULL;
1894 iface->conf->num_bss--;
1895 for (i = idx; i < iface->conf->num_bss; i++)
1896 iface->conf->bss[i] = iface->conf->bss[i + 1];
1902 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
1904 struct hostapd_iface *hapd_iface;
1907 for (i = 0; i < interfaces->count; i++) {
1908 hapd_iface = interfaces->iface[i];
1909 if (hapd_iface == NULL)
1911 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
1912 wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
1913 hostapd_interface_deinit_free(hapd_iface);
1915 while (k < (interfaces->count - 1)) {
1916 interfaces->iface[k] =
1917 interfaces->iface[k + 1];
1920 interfaces->count--;
1924 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
1925 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf))
1926 return hostapd_remove_bss(hapd_iface, j);
1934 * hostapd_new_assoc_sta - Notify that a new station associated with the AP
1935 * @hapd: Pointer to BSS data
1936 * @sta: Pointer to the associated STA data
1937 * @reassoc: 1 to indicate this was a re-association; 0 = first association
1939 * This function will be called whenever a station associates with the AP. It
1940 * can be called from ieee802_11.c for drivers that export MLME to hostapd and
1941 * from drv_callbacks.c based on driver events for drivers that take care of
1942 * management frames (IEEE 802.11 authentication and association) internally.
1944 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
1947 if (hapd->tkip_countermeasures) {
1948 hostapd_drv_sta_deauth(hapd, sta->addr,
1949 WLAN_REASON_MICHAEL_MIC_FAILURE);
1953 hostapd_prune_associations(hapd, sta->addr);
1955 /* IEEE 802.11F (IAPP) */
1956 if (hapd->conf->ieee802_11f)
1957 iapp_new_station(hapd->iapp, sta);
1960 if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
1961 sta->no_p2p_set = 1;
1962 hapd->num_sta_no_p2p++;
1963 if (hapd->num_sta_no_p2p == 1)
1964 hostapd_p2p_non_p2p_sta_connected(hapd);
1966 #endif /* CONFIG_P2P */
1968 /* Start accounting here, if IEEE 802.1X and WPA are not used.
1969 * IEEE 802.1X/WPA code will start accounting after the station has
1970 * been authorized. */
1971 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa) {
1972 os_get_reltime(&sta->connected_time);
1973 accounting_sta_start(hapd, sta);
1976 /* Start IEEE 802.1X authentication process for new stations */
1977 ieee802_1x_new_station(hapd, sta);
1979 if (sta->auth_alg != WLAN_AUTH_FT &&
1980 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
1981 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
1983 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
1985 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
1986 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
1987 "for " MACSTR " (%d seconds - ap_max_inactivity)",
1988 __func__, MAC2STR(sta->addr),
1989 hapd->conf->ap_max_inactivity);
1990 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1991 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
1992 ap_handle_timer, hapd, sta);
1997 const char * hostapd_state_text(enum hostapd_iface_state s)
2000 case HAPD_IFACE_UNINITIALIZED:
2001 return "UNINITIALIZED";
2002 case HAPD_IFACE_DISABLED:
2004 case HAPD_IFACE_COUNTRY_UPDATE:
2005 return "COUNTRY_UPDATE";
2006 case HAPD_IFACE_ACS:
2008 case HAPD_IFACE_HT_SCAN:
2010 case HAPD_IFACE_DFS:
2012 case HAPD_IFACE_ENABLED:
2020 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2022 wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2023 iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2024 hostapd_state_text(s));
2031 static void free_beacon_data(struct beacon_data *beacon)
2033 os_free(beacon->head);
2034 beacon->head = NULL;
2035 os_free(beacon->tail);
2036 beacon->tail = NULL;
2037 os_free(beacon->probe_resp);
2038 beacon->probe_resp = NULL;
2039 os_free(beacon->beacon_ies);
2040 beacon->beacon_ies = NULL;
2041 os_free(beacon->proberesp_ies);
2042 beacon->proberesp_ies = NULL;
2043 os_free(beacon->assocresp_ies);
2044 beacon->assocresp_ies = NULL;
2048 static int hostapd_build_beacon_data(struct hostapd_iface *iface,
2049 struct beacon_data *beacon)
2051 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
2052 struct wpa_driver_ap_params params;
2054 struct hostapd_data *hapd = iface->bss[0];
2056 os_memset(beacon, 0, sizeof(*beacon));
2057 ret = ieee802_11_build_ap_params(hapd, ¶ms);
2061 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
2065 goto free_ap_params;
2068 beacon->head = os_malloc(params.head_len);
2070 goto free_ap_extra_ies;
2072 os_memcpy(beacon->head, params.head, params.head_len);
2073 beacon->head_len = params.head_len;
2075 beacon->tail = os_malloc(params.tail_len);
2079 os_memcpy(beacon->tail, params.tail, params.tail_len);
2080 beacon->tail_len = params.tail_len;
2082 if (params.proberesp != NULL) {
2083 beacon->probe_resp = os_malloc(params.proberesp_len);
2084 if (!beacon->probe_resp)
2087 os_memcpy(beacon->probe_resp, params.proberesp,
2088 params.proberesp_len);
2089 beacon->probe_resp_len = params.proberesp_len;
2092 /* copy the extra ies */
2094 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra));
2095 if (!beacon->beacon_ies)
2098 os_memcpy(beacon->beacon_ies,
2099 beacon_extra->buf, wpabuf_len(beacon_extra));
2100 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
2103 if (proberesp_extra) {
2104 beacon->proberesp_ies =
2105 os_malloc(wpabuf_len(proberesp_extra));
2106 if (!beacon->proberesp_ies)
2109 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf,
2110 wpabuf_len(proberesp_extra));
2111 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
2114 if (assocresp_extra) {
2115 beacon->assocresp_ies =
2116 os_malloc(wpabuf_len(assocresp_extra));
2117 if (!beacon->assocresp_ies)
2120 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf,
2121 wpabuf_len(assocresp_extra));
2122 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
2127 /* if the function fails, the caller should not free beacon data */
2129 free_beacon_data(beacon);
2132 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
2135 ieee802_11_free_ap_params(¶ms);
2141 * TODO: This flow currently supports only changing frequency within the
2142 * same hw_mode. Any other changes to MAC parameters or provided settings (even
2143 * width) are not supported.
2145 static int hostapd_change_config_freq(struct hostapd_data *hapd,
2146 struct hostapd_config *conf,
2147 struct hostapd_freq_params *params,
2148 struct hostapd_freq_params *old_params)
2152 if (!params->channel) {
2153 /* check if the new channel is supported by hw */
2154 channel = hostapd_hw_get_channel(hapd, params->freq);
2158 channel = params->channel;
2161 /* if a pointer to old_params is provided we save previous state */
2163 old_params->channel = conf->channel;
2164 old_params->ht_enabled = conf->ieee80211n;
2165 old_params->sec_channel_offset = conf->secondary_channel;
2168 conf->channel = channel;
2169 conf->ieee80211n = params->ht_enabled;
2170 conf->secondary_channel = params->sec_channel_offset;
2172 /* TODO: maybe call here hostapd_config_check here? */
2178 static int hostapd_fill_csa_settings(struct hostapd_iface *iface,
2179 struct csa_settings *settings)
2181 struct hostapd_freq_params old_freq;
2184 os_memset(&old_freq, 0, sizeof(old_freq));
2185 if (!iface || !iface->freq || iface->csa_in_progress)
2188 ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
2189 &settings->freq_params,
2194 ret = hostapd_build_beacon_data(iface, &settings->beacon_after);
2196 /* change back the configuration */
2197 hostapd_change_config_freq(iface->bss[0], iface->conf,
2203 /* set channel switch parameters for csa ie */
2204 iface->cs_freq_params = settings->freq_params;
2205 iface->cs_count = settings->cs_count;
2206 iface->cs_block_tx = settings->block_tx;
2208 ret = hostapd_build_beacon_data(iface, &settings->beacon_csa);
2210 free_beacon_data(&settings->beacon_after);
2214 settings->counter_offset_beacon = iface->cs_c_off_beacon;
2215 settings->counter_offset_presp = iface->cs_c_off_proberesp;
2221 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
2223 os_memset(&hapd->iface->cs_freq_params, 0,
2224 sizeof(hapd->iface->cs_freq_params));
2225 hapd->iface->cs_count = 0;
2226 hapd->iface->cs_block_tx = 0;
2227 hapd->iface->cs_c_off_beacon = 0;
2228 hapd->iface->cs_c_off_proberesp = 0;
2229 hapd->iface->csa_in_progress = 0;
2233 int hostapd_switch_channel(struct hostapd_data *hapd,
2234 struct csa_settings *settings)
2237 ret = hostapd_fill_csa_settings(hapd->iface, settings);
2241 ret = hostapd_drv_switch_channel(hapd, settings);
2242 free_beacon_data(&settings->beacon_csa);
2243 free_beacon_data(&settings->beacon_after);
2246 /* if we failed, clean cs parameters */
2247 hostapd_cleanup_cs_params(hapd);
2251 hapd->iface->csa_in_progress = 1;
2255 #endif /* NEED_AP_MLME */