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      1 /*
      2  * hostapd / WPA authenticator glue code
      3  * Copyright (c) 2002-2012, Jouni Malinen <j (at) 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 "common/ieee802_11_defs.h"
     13 #include "common/sae.h"
     14 #include "eapol_auth/eapol_auth_sm.h"
     15 #include "eapol_auth/eapol_auth_sm_i.h"
     16 #include "eap_server/eap.h"
     17 #include "l2_packet/l2_packet.h"
     18 #include "hostapd.h"
     19 #include "ieee802_1x.h"
     20 #include "preauth_auth.h"
     21 #include "sta_info.h"
     22 #include "tkip_countermeasures.h"
     23 #include "ap_drv_ops.h"
     24 #include "ap_config.h"
     25 #include "wpa_auth.h"
     26 #include "wpa_auth_glue.h"
     27 
     28 
     29 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
     30 				  struct hostapd_config *iconf,
     31 				  struct wpa_auth_config *wconf)
     32 {
     33 	os_memset(wconf, 0, sizeof(*wconf));
     34 	wconf->wpa = conf->wpa;
     35 	wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
     36 	wconf->wpa_pairwise = conf->wpa_pairwise;
     37 	wconf->wpa_group = conf->wpa_group;
     38 	wconf->wpa_group_rekey = conf->wpa_group_rekey;
     39 	wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
     40 	wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
     41 	wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
     42 	wconf->rsn_pairwise = conf->rsn_pairwise;
     43 	wconf->rsn_preauth = conf->rsn_preauth;
     44 	wconf->eapol_version = conf->eapol_version;
     45 	wconf->peerkey = conf->peerkey;
     46 	wconf->wmm_enabled = conf->wmm_enabled;
     47 	wconf->wmm_uapsd = conf->wmm_uapsd;
     48 	wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
     49 	wconf->okc = conf->okc;
     50 #ifdef CONFIG_IEEE80211W
     51 	wconf->ieee80211w = conf->ieee80211w;
     52 	wconf->group_mgmt_cipher = conf->group_mgmt_cipher;
     53 #endif /* CONFIG_IEEE80211W */
     54 #ifdef CONFIG_IEEE80211R
     55 	wconf->ssid_len = conf->ssid.ssid_len;
     56 	if (wconf->ssid_len > SSID_LEN)
     57 		wconf->ssid_len = SSID_LEN;
     58 	os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
     59 	os_memcpy(wconf->mobility_domain, conf->mobility_domain,
     60 		  MOBILITY_DOMAIN_ID_LEN);
     61 	if (conf->nas_identifier &&
     62 	    os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
     63 		wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
     64 		os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
     65 			  wconf->r0_key_holder_len);
     66 	}
     67 	os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
     68 	wconf->r0_key_lifetime = conf->r0_key_lifetime;
     69 	wconf->reassociation_deadline = conf->reassociation_deadline;
     70 	wconf->r0kh_list = conf->r0kh_list;
     71 	wconf->r1kh_list = conf->r1kh_list;
     72 	wconf->pmk_r1_push = conf->pmk_r1_push;
     73 	wconf->ft_over_ds = conf->ft_over_ds;
     74 #endif /* CONFIG_IEEE80211R */
     75 #ifdef CONFIG_HS20
     76 	wconf->disable_gtk = conf->disable_dgaf;
     77 	if (conf->osen) {
     78 		wconf->disable_gtk = 1;
     79 		wconf->wpa = WPA_PROTO_OSEN;
     80 		wconf->wpa_key_mgmt = WPA_KEY_MGMT_OSEN;
     81 		wconf->wpa_pairwise = 0;
     82 		wconf->wpa_group = WPA_CIPHER_CCMP;
     83 		wconf->rsn_pairwise = WPA_CIPHER_CCMP;
     84 		wconf->rsn_preauth = 0;
     85 		wconf->disable_pmksa_caching = 1;
     86 #ifdef CONFIG_IEEE80211W
     87 		wconf->ieee80211w = 1;
     88 #endif /* CONFIG_IEEE80211W */
     89 	}
     90 #endif /* CONFIG_HS20 */
     91 #ifdef CONFIG_TESTING_OPTIONS
     92 	wconf->corrupt_gtk_rekey_mic_probability =
     93 		iconf->corrupt_gtk_rekey_mic_probability;
     94 #endif /* CONFIG_TESTING_OPTIONS */
     95 #ifdef CONFIG_P2P
     96 	os_memcpy(wconf->ip_addr_go, conf->ip_addr_go, 4);
     97 	os_memcpy(wconf->ip_addr_mask, conf->ip_addr_mask, 4);
     98 	os_memcpy(wconf->ip_addr_start, conf->ip_addr_start, 4);
     99 	os_memcpy(wconf->ip_addr_end, conf->ip_addr_end, 4);
    100 #endif /* CONFIG_P2P */
    101 }
    102 
    103 
    104 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
    105 				    logger_level level, const char *txt)
    106 {
    107 #ifndef CONFIG_NO_HOSTAPD_LOGGER
    108 	struct hostapd_data *hapd = ctx;
    109 	int hlevel;
    110 
    111 	switch (level) {
    112 	case LOGGER_WARNING:
    113 		hlevel = HOSTAPD_LEVEL_WARNING;
    114 		break;
    115 	case LOGGER_INFO:
    116 		hlevel = HOSTAPD_LEVEL_INFO;
    117 		break;
    118 	case LOGGER_DEBUG:
    119 	default:
    120 		hlevel = HOSTAPD_LEVEL_DEBUG;
    121 		break;
    122 	}
    123 
    124 	hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
    125 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
    126 }
    127 
    128 
    129 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
    130 					u16 reason)
    131 {
    132 	struct hostapd_data *hapd = ctx;
    133 	wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
    134 		   "STA " MACSTR " reason %d",
    135 		   __func__, MAC2STR(addr), reason);
    136 	ap_sta_disconnect(hapd, NULL, addr, reason);
    137 }
    138 
    139 
    140 static int hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
    141 {
    142 	struct hostapd_data *hapd = ctx;
    143 	return michael_mic_failure(hapd, addr, 0);
    144 }
    145 
    146 
    147 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
    148 				       wpa_eapol_variable var, int value)
    149 {
    150 	struct hostapd_data *hapd = ctx;
    151 	struct sta_info *sta = ap_get_sta(hapd, addr);
    152 	if (sta == NULL)
    153 		return;
    154 	switch (var) {
    155 	case WPA_EAPOL_portEnabled:
    156 		ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
    157 		break;
    158 	case WPA_EAPOL_portValid:
    159 		ieee802_1x_notify_port_valid(sta->eapol_sm, value);
    160 		break;
    161 	case WPA_EAPOL_authorized:
    162 		ieee802_1x_set_sta_authorized(hapd, sta, value);
    163 		break;
    164 	case WPA_EAPOL_portControl_Auto:
    165 		if (sta->eapol_sm)
    166 			sta->eapol_sm->portControl = Auto;
    167 		break;
    168 	case WPA_EAPOL_keyRun:
    169 		if (sta->eapol_sm)
    170 			sta->eapol_sm->keyRun = value ? TRUE : FALSE;
    171 		break;
    172 	case WPA_EAPOL_keyAvailable:
    173 		if (sta->eapol_sm)
    174 			sta->eapol_sm->eap_if->eapKeyAvailable =
    175 				value ? TRUE : FALSE;
    176 		break;
    177 	case WPA_EAPOL_keyDone:
    178 		if (sta->eapol_sm)
    179 			sta->eapol_sm->keyDone = value ? TRUE : FALSE;
    180 		break;
    181 	case WPA_EAPOL_inc_EapolFramesTx:
    182 		if (sta->eapol_sm)
    183 			sta->eapol_sm->dot1xAuthEapolFramesTx++;
    184 		break;
    185 	}
    186 }
    187 
    188 
    189 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
    190 				      wpa_eapol_variable var)
    191 {
    192 	struct hostapd_data *hapd = ctx;
    193 	struct sta_info *sta = ap_get_sta(hapd, addr);
    194 	if (sta == NULL || sta->eapol_sm == NULL)
    195 		return -1;
    196 	switch (var) {
    197 	case WPA_EAPOL_keyRun:
    198 		return sta->eapol_sm->keyRun;
    199 	case WPA_EAPOL_keyAvailable:
    200 		return sta->eapol_sm->eap_if->eapKeyAvailable;
    201 	default:
    202 		return -1;
    203 	}
    204 }
    205 
    206 
    207 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
    208 					   const u8 *p2p_dev_addr,
    209 					   const u8 *prev_psk)
    210 {
    211 	struct hostapd_data *hapd = ctx;
    212 	struct sta_info *sta = ap_get_sta(hapd, addr);
    213 	const u8 *psk;
    214 
    215 #ifdef CONFIG_SAE
    216 	if (sta && sta->auth_alg == WLAN_AUTH_SAE) {
    217 		if (!sta->sae || prev_psk)
    218 			return NULL;
    219 		return sta->sae->pmk;
    220 	}
    221 #endif /* CONFIG_SAE */
    222 
    223 	psk = hostapd_get_psk(hapd->conf, addr, p2p_dev_addr, prev_psk);
    224 	/*
    225 	 * This is about to iterate over all psks, prev_psk gives the last
    226 	 * returned psk which should not be returned again.
    227 	 * logic list (all hostapd_get_psk; all sta->psk)
    228 	 */
    229 	if (sta && sta->psk && !psk) {
    230 		struct hostapd_sta_wpa_psk_short *pos;
    231 		psk = sta->psk->psk;
    232 		for (pos = sta->psk; pos; pos = pos->next) {
    233 			if (pos->psk == prev_psk) {
    234 				psk = pos->next ? pos->next->psk : NULL;
    235 				break;
    236 			}
    237 		}
    238 	}
    239 	return psk;
    240 }
    241 
    242 
    243 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
    244 				    size_t *len)
    245 {
    246 	struct hostapd_data *hapd = ctx;
    247 	const u8 *key;
    248 	size_t keylen;
    249 	struct sta_info *sta;
    250 
    251 	sta = ap_get_sta(hapd, addr);
    252 	if (sta == NULL)
    253 		return -1;
    254 
    255 	key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
    256 	if (key == NULL)
    257 		return -1;
    258 
    259 	if (keylen > *len)
    260 		keylen = *len;
    261 	os_memcpy(msk, key, keylen);
    262 	*len = keylen;
    263 
    264 	return 0;
    265 }
    266 
    267 
    268 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
    269 				    const u8 *addr, int idx, u8 *key,
    270 				    size_t key_len)
    271 {
    272 	struct hostapd_data *hapd = ctx;
    273 	const char *ifname = hapd->conf->iface;
    274 
    275 	if (vlan_id > 0) {
    276 		ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
    277 		if (ifname == NULL)
    278 			return -1;
    279 	}
    280 
    281 	return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
    282 				   key, key_len);
    283 }
    284 
    285 
    286 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
    287 				       u8 *seq)
    288 {
    289 	struct hostapd_data *hapd = ctx;
    290 	return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
    291 }
    292 
    293 
    294 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
    295 				       const u8 *data, size_t data_len,
    296 				       int encrypt)
    297 {
    298 	struct hostapd_data *hapd = ctx;
    299 	struct sta_info *sta;
    300 	u32 flags = 0;
    301 
    302 	sta = ap_get_sta(hapd, addr);
    303 	if (sta)
    304 		flags = hostapd_sta_flags_to_drv(sta->flags);
    305 
    306 	return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
    307 					   encrypt, flags);
    308 }
    309 
    310 
    311 static int hostapd_wpa_auth_for_each_sta(
    312 	void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
    313 	void *cb_ctx)
    314 {
    315 	struct hostapd_data *hapd = ctx;
    316 	struct sta_info *sta;
    317 
    318 	for (sta = hapd->sta_list; sta; sta = sta->next) {
    319 		if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
    320 			return 1;
    321 	}
    322 	return 0;
    323 }
    324 
    325 
    326 struct wpa_auth_iface_iter_data {
    327 	int (*cb)(struct wpa_authenticator *sm, void *ctx);
    328 	void *cb_ctx;
    329 };
    330 
    331 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
    332 {
    333 	struct wpa_auth_iface_iter_data *data = ctx;
    334 	size_t i;
    335 	for (i = 0; i < iface->num_bss; i++) {
    336 		if (iface->bss[i]->wpa_auth &&
    337 		    data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
    338 			return 1;
    339 	}
    340 	return 0;
    341 }
    342 
    343 
    344 static int hostapd_wpa_auth_for_each_auth(
    345 	void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
    346 	void *cb_ctx)
    347 {
    348 	struct hostapd_data *hapd = ctx;
    349 	struct wpa_auth_iface_iter_data data;
    350 	if (hapd->iface->interfaces == NULL ||
    351 	    hapd->iface->interfaces->for_each_interface == NULL)
    352 		return -1;
    353 	data.cb = cb;
    354 	data.cb_ctx = cb_ctx;
    355 	return hapd->iface->interfaces->for_each_interface(
    356 		hapd->iface->interfaces, wpa_auth_iface_iter, &data);
    357 }
    358 
    359 
    360 #ifdef CONFIG_IEEE80211R
    361 
    362 struct wpa_auth_ft_iface_iter_data {
    363 	struct hostapd_data *src_hapd;
    364 	const u8 *dst;
    365 	const u8 *data;
    366 	size_t data_len;
    367 };
    368 
    369 
    370 static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
    371 {
    372 	struct wpa_auth_ft_iface_iter_data *idata = ctx;
    373 	struct hostapd_data *hapd;
    374 	size_t j;
    375 
    376 	for (j = 0; j < iface->num_bss; j++) {
    377 		hapd = iface->bss[j];
    378 		if (hapd == idata->src_hapd)
    379 			continue;
    380 		if (os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) == 0) {
    381 			wpa_printf(MSG_DEBUG, "FT: Send RRB data directly to "
    382 				   "locally managed BSS " MACSTR "@%s -> "
    383 				   MACSTR "@%s",
    384 				   MAC2STR(idata->src_hapd->own_addr),
    385 				   idata->src_hapd->conf->iface,
    386 				   MAC2STR(hapd->own_addr), hapd->conf->iface);
    387 			wpa_ft_rrb_rx(hapd->wpa_auth,
    388 				      idata->src_hapd->own_addr,
    389 				      idata->data, idata->data_len);
    390 			return 1;
    391 		}
    392 	}
    393 
    394 	return 0;
    395 }
    396 
    397 #endif /* CONFIG_IEEE80211R */
    398 
    399 
    400 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
    401 				       const u8 *data, size_t data_len)
    402 {
    403 	struct hostapd_data *hapd = ctx;
    404 	struct l2_ethhdr *buf;
    405 	int ret;
    406 
    407 #ifdef CONFIG_IEEE80211R
    408 	if (proto == ETH_P_RRB && hapd->iface->interfaces &&
    409 	    hapd->iface->interfaces->for_each_interface) {
    410 		int res;
    411 		struct wpa_auth_ft_iface_iter_data idata;
    412 		idata.src_hapd = hapd;
    413 		idata.dst = dst;
    414 		idata.data = data;
    415 		idata.data_len = data_len;
    416 		res = hapd->iface->interfaces->for_each_interface(
    417 			hapd->iface->interfaces, hostapd_wpa_auth_ft_iter,
    418 			&idata);
    419 		if (res == 1)
    420 			return data_len;
    421 	}
    422 #endif /* CONFIG_IEEE80211R */
    423 
    424 	if (hapd->driver && hapd->driver->send_ether)
    425 		return hapd->driver->send_ether(hapd->drv_priv, dst,
    426 						hapd->own_addr, proto,
    427 						data, data_len);
    428 	if (hapd->l2 == NULL)
    429 		return -1;
    430 
    431 	buf = os_malloc(sizeof(*buf) + data_len);
    432 	if (buf == NULL)
    433 		return -1;
    434 	os_memcpy(buf->h_dest, dst, ETH_ALEN);
    435 	os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
    436 	buf->h_proto = host_to_be16(proto);
    437 	os_memcpy(buf + 1, data, data_len);
    438 	ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
    439 			     sizeof(*buf) + data_len);
    440 	os_free(buf);
    441 	return ret;
    442 }
    443 
    444 
    445 #ifdef CONFIG_IEEE80211R
    446 
    447 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
    448 					   const u8 *data, size_t data_len)
    449 {
    450 	struct hostapd_data *hapd = ctx;
    451 	int res;
    452 	struct ieee80211_mgmt *m;
    453 	size_t mlen;
    454 	struct sta_info *sta;
    455 
    456 	sta = ap_get_sta(hapd, dst);
    457 	if (sta == NULL || sta->wpa_sm == NULL)
    458 		return -1;
    459 
    460 	m = os_zalloc(sizeof(*m) + data_len);
    461 	if (m == NULL)
    462 		return -1;
    463 	mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
    464 	m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
    465 					WLAN_FC_STYPE_ACTION);
    466 	os_memcpy(m->da, dst, ETH_ALEN);
    467 	os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
    468 	os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
    469 	os_memcpy(&m->u, data, data_len);
    470 
    471 	res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0);
    472 	os_free(m);
    473 	return res;
    474 }
    475 
    476 
    477 static struct wpa_state_machine *
    478 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
    479 {
    480 	struct hostapd_data *hapd = ctx;
    481 	struct sta_info *sta;
    482 
    483 	if (hostapd_add_sta_node(hapd, sta_addr, WLAN_AUTH_FT) < 0)
    484 		return NULL;
    485 
    486 	sta = ap_sta_add(hapd, sta_addr);
    487 	if (sta == NULL)
    488 		return NULL;
    489 	if (sta->wpa_sm) {
    490 		sta->auth_alg = WLAN_AUTH_FT;
    491 		return sta->wpa_sm;
    492 	}
    493 
    494 	sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr, NULL);
    495 	if (sta->wpa_sm == NULL) {
    496 		ap_free_sta(hapd, sta);
    497 		return NULL;
    498 	}
    499 	sta->auth_alg = WLAN_AUTH_FT;
    500 
    501 	return sta->wpa_sm;
    502 }
    503 
    504 
    505 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
    506 				size_t len)
    507 {
    508 	struct hostapd_data *hapd = ctx;
    509 	struct l2_ethhdr *ethhdr;
    510 	if (len < sizeof(*ethhdr))
    511 		return;
    512 	ethhdr = (struct l2_ethhdr *) buf;
    513 	wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
    514 		   MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
    515 	wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
    516 		      len - sizeof(*ethhdr));
    517 }
    518 
    519 
    520 static int hostapd_wpa_auth_add_tspec(void *ctx, const u8 *sta_addr,
    521 				      u8 *tspec_ie, size_t tspec_ielen)
    522 {
    523 	struct hostapd_data *hapd = ctx;
    524 	return hostapd_add_tspec(hapd, sta_addr, tspec_ie, tspec_ielen);
    525 }
    526 
    527 #endif /* CONFIG_IEEE80211R */
    528 
    529 
    530 int hostapd_setup_wpa(struct hostapd_data *hapd)
    531 {
    532 	struct wpa_auth_config _conf;
    533 	struct wpa_auth_callbacks cb;
    534 	const u8 *wpa_ie;
    535 	size_t wpa_ie_len;
    536 
    537 	hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &_conf);
    538 	if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
    539 		_conf.tx_status = 1;
    540 	if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_MLME)
    541 		_conf.ap_mlme = 1;
    542 	os_memset(&cb, 0, sizeof(cb));
    543 	cb.ctx = hapd;
    544 	cb.logger = hostapd_wpa_auth_logger;
    545 	cb.disconnect = hostapd_wpa_auth_disconnect;
    546 	cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
    547 	cb.set_eapol = hostapd_wpa_auth_set_eapol;
    548 	cb.get_eapol = hostapd_wpa_auth_get_eapol;
    549 	cb.get_psk = hostapd_wpa_auth_get_psk;
    550 	cb.get_msk = hostapd_wpa_auth_get_msk;
    551 	cb.set_key = hostapd_wpa_auth_set_key;
    552 	cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
    553 	cb.send_eapol = hostapd_wpa_auth_send_eapol;
    554 	cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
    555 	cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
    556 	cb.send_ether = hostapd_wpa_auth_send_ether;
    557 #ifdef CONFIG_IEEE80211R
    558 	cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
    559 	cb.add_sta = hostapd_wpa_auth_add_sta;
    560 	cb.add_tspec = hostapd_wpa_auth_add_tspec;
    561 #endif /* CONFIG_IEEE80211R */
    562 	hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
    563 	if (hapd->wpa_auth == NULL) {
    564 		wpa_printf(MSG_ERROR, "WPA initialization failed.");
    565 		return -1;
    566 	}
    567 
    568 	if (hostapd_set_privacy(hapd, 1)) {
    569 		wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
    570 			   "for interface %s", hapd->conf->iface);
    571 		return -1;
    572 	}
    573 
    574 	wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
    575 	if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
    576 		wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
    577 			   "the kernel driver.");
    578 		return -1;
    579 	}
    580 
    581 	if (rsn_preauth_iface_init(hapd)) {
    582 		wpa_printf(MSG_ERROR, "Initialization of RSN "
    583 			   "pre-authentication failed.");
    584 		return -1;
    585 	}
    586 
    587 #ifdef CONFIG_IEEE80211R
    588 	if (!hostapd_drv_none(hapd)) {
    589 		hapd->l2 = l2_packet_init(hapd->conf->bridge[0] ?
    590 					  hapd->conf->bridge :
    591 					  hapd->conf->iface, NULL, ETH_P_RRB,
    592 					  hostapd_rrb_receive, hapd, 1);
    593 		if (hapd->l2 == NULL &&
    594 		    (hapd->driver == NULL ||
    595 		     hapd->driver->send_ether == NULL)) {
    596 			wpa_printf(MSG_ERROR, "Failed to open l2_packet "
    597 				   "interface");
    598 			return -1;
    599 		}
    600 	}
    601 #endif /* CONFIG_IEEE80211R */
    602 
    603 	return 0;
    604 
    605 }
    606 
    607 
    608 void hostapd_reconfig_wpa(struct hostapd_data *hapd)
    609 {
    610 	struct wpa_auth_config wpa_auth_conf;
    611 	hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &wpa_auth_conf);
    612 	wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
    613 }
    614 
    615 
    616 void hostapd_deinit_wpa(struct hostapd_data *hapd)
    617 {
    618 	ieee80211_tkip_countermeasures_deinit(hapd);
    619 	rsn_preauth_iface_deinit(hapd);
    620 	if (hapd->wpa_auth) {
    621 		wpa_deinit(hapd->wpa_auth);
    622 		hapd->wpa_auth = NULL;
    623 
    624 		if (hostapd_set_privacy(hapd, 0)) {
    625 			wpa_printf(MSG_DEBUG, "Could not disable "
    626 				   "PrivacyInvoked for interface %s",
    627 				   hapd->conf->iface);
    628 		}
    629 
    630 		if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
    631 			wpa_printf(MSG_DEBUG, "Could not remove generic "
    632 				   "information element from interface %s",
    633 				   hapd->conf->iface);
    634 		}
    635 	}
    636 	ieee802_1x_deinit(hapd);
    637 
    638 #ifdef CONFIG_IEEE80211R
    639 	l2_packet_deinit(hapd->l2);
    640 	hapd->l2 = NULL;
    641 #endif /* CONFIG_IEEE80211R */
    642 }
    643