src/ap/wpa_auth_glue.c

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