git.maemo.org Git - wpasupplicant/blob - hostapd/ieee802_11.c

   1 /*
   2  * hostapd / IEEE 802.11 Management
   3  * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2007-2008, Intel Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "includes.h"
  17
  18 #ifndef CONFIG_NATIVE_WINDOWS
  19
  20 #include <net/if.h>
  21
  22 #include "eloop.h"
  23 #include "hostapd.h"
  24 #include "ieee802_11.h"
  25 #include "beacon.h"
  26 #include "hw_features.h"
  27 #include "radius/radius.h"
  28 #include "radius/radius_client.h"
  29 #include "ieee802_11_auth.h"
  30 #include "sta_info.h"
  31 #include "rc4.h"
  32 #include "ieee802_1x.h"
  33 #include "wpa.h"
  34 #include "wme.h"
  35 #include "ap_list.h"
  36 #include "accounting.h"
  37 #include "driver_i.h"
  38 #include "mlme.h"
  39
  40
  41 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
  42 {
  43         u8 *pos = eid;
  44         int i, num, count;
  45
  46         if (hapd->iface->current_rates == NULL)
  47                 return eid;
  48
  49         *pos++ = WLAN_EID_SUPP_RATES;
  50         num = hapd->iface->num_rates;
  51         if (num > 8) {
  52                 /* rest of the rates are encoded in Extended supported
  53                  * rates element */
  54                 num = 8;
  55         }
  56
  57         *pos++ = num;
  58         count = 0;
  59         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
  60              i++) {
  61                 count++;
  62                 *pos = hapd->iface->current_rates[i].rate / 5;
  63                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  64                         *pos |= 0x80;
  65                 pos++;
  66         }
  67
  68         return pos;
  69 }
  70
  71
  72 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
  73 {
  74         u8 *pos = eid;
  75         int i, num, count;
  76
  77         if (hapd->iface->current_rates == NULL)
  78                 return eid;
  79
  80         num = hapd->iface->num_rates;
  81         if (num <= 8)
  82                 return eid;
  83         num -= 8;
  84
  85         *pos++ = WLAN_EID_EXT_SUPP_RATES;
  86         *pos++ = num;
  87         count = 0;
  88         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
  89              i++) {
  90                 count++;
  91                 if (count <= 8)
  92                         continue; /* already in SuppRates IE */
  93                 *pos = hapd->iface->current_rates[i].rate / 5;
  94                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  95                         *pos |= 0x80;
  96                 pos++;
  97         }
  98
  99         return pos;
 100 }
 101
 102
 103 u8 * hostapd_eid_ht_capabilities_info(struct hostapd_data *hapd, u8 *eid)
 104 {
 105 #ifdef CONFIG_IEEE80211N
 106         struct ieee80211_ht_capability *cap;
 107         u8 *pos = eid;
 108
 109         if (!hapd->iconf->ieee80211n)
 110                 return eid;
 111
 112         *pos++ = WLAN_EID_HT_CAP;
 113         *pos++ = sizeof(*cap);
 114
 115         cap = (struct ieee80211_ht_capability *) pos;
 116         os_memset(cap, 0, sizeof(*cap));
 117         SET_2BIT_U8(&cap->mac_ht_params_info,
 118                     MAC_HT_PARAM_INFO_MAX_RX_AMPDU_FACTOR_OFFSET,
 119                     MAX_RX_AMPDU_FACTOR_64KB);
 120
 121         cap->capabilities_info = host_to_le16(hapd->iconf->ht_capab);
 122
 123         cap->supported_mcs_set[0] = 0xff;
 124         cap->supported_mcs_set[1] = 0xff;
 125
 126         pos += sizeof(*cap);
 127
 128         return pos;
 129 #else /* CONFIG_IEEE80211N */
 130         return eid;
 131 #endif /* CONFIG_IEEE80211N */
 132 }
 133
 134
 135 u8 * hostapd_eid_ht_operation(struct hostapd_data *hapd, u8 *eid)
 136 {
 137 #ifdef CONFIG_IEEE80211N
 138         struct ieee80211_ht_operation *oper;
 139         u8 *pos = eid;
 140
 141         if (!hapd->iconf->ieee80211n)
 142                 return eid;
 143
 144         *pos++ = WLAN_EID_HT_OPERATION;
 145         *pos++ = sizeof(*oper);
 146
 147         oper = (struct ieee80211_ht_operation *) pos;
 148         os_memset(oper, 0, sizeof(*oper));
 149
 150         oper->control_chan = hapd->iconf->channel;
 151         oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode);
 152         if (hapd->iconf->secondary_channel == 1)
 153                 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE |
 154                         HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
 155         if (hapd->iconf->secondary_channel == -1)
 156                 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW |
 157                         HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
 158
 159         pos += sizeof(*oper);
 160
 161         return pos;
 162 #else /* CONFIG_IEEE80211N */
 163         return eid;
 164 #endif /* CONFIG_IEEE80211N */
 165 }
 166
 167
 168 #ifdef CONFIG_IEEE80211N
 169
 170 /*
 171 op_mode
 172 Set to 0 (HT pure) under the followign conditions
 173         - all STAs in the BSS are 20/40 MHz HT in 20/40 MHz BSS or
 174         - all STAs in the BSS are 20 MHz HT in 20 MHz BSS
 175 Set to 1 (HT non-member protection) if there may be non-HT STAs
 176         in both the primary and the secondary channel
 177 Set to 2 if only HT STAs are associated in BSS,
 178         however and at least one 20 MHz HT STA is associated
 179 Set to 3 (HT mixed mode) when one or more non-HT STAs are associated
 180         (currently non-GF HT station is considered as non-HT STA also)
 181 */
 182 int hostapd_ht_operation_update(struct hostapd_iface *iface)
 183 {
 184         u16 cur_op_mode, new_op_mode;
 185         int op_mode_changes = 0;
 186
 187         if (!iface->conf->ieee80211n || iface->conf->ht_op_mode_fixed)
 188                 return 0;
 189
 190         wpa_printf(MSG_DEBUG, "%s current operation mode=0x%X",
 191                    __func__, iface->ht_op_mode);
 192
 193         if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT)
 194             && iface->num_sta_ht_no_gf) {
 195                 iface->ht_op_mode |=
 196                         HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
 197                 op_mode_changes++;
 198         } else if ((iface->ht_op_mode &
 199                     HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) &&
 200                    iface->num_sta_ht_no_gf == 0) {
 201                 iface->ht_op_mode &=
 202                         ~HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
 203                 op_mode_changes++;
 204         }
 205
 206         if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
 207             (iface->num_sta_no_ht || iface->olbc_ht)) {
 208                 iface->ht_op_mode |= HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
 209                 op_mode_changes++;
 210         } else if ((iface->ht_op_mode &
 211                     HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
 212                    (iface->num_sta_no_ht == 0 && !iface->olbc_ht)) {
 213                 iface->ht_op_mode &=
 214                         ~HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
 215                 op_mode_changes++;
 216         }
 217
 218         /* Note: currently we switch to the MIXED op mode if HT non-greenfield
 219          * station is associated. Probably it's a theoretical case, since
 220          * it looks like all known HT STAs support greenfield.
 221          */
 222         new_op_mode = 0;
 223         if (iface->num_sta_no_ht ||
 224             (iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT))
 225                 new_op_mode = OP_MODE_MIXED;
 226         else if ((iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)
 227                  && iface->num_sta_ht_20mhz)
 228                 new_op_mode = OP_MODE_20MHZ_HT_STA_ASSOCED;
 229         else if (iface->olbc_ht)
 230                 new_op_mode = OP_MODE_MAY_BE_LEGACY_STAS;
 231         else
 232                 new_op_mode = OP_MODE_PURE;
 233
 234         cur_op_mode = iface->ht_op_mode & HT_INFO_OPERATION_MODE_OP_MODE_MASK;
 235         if (cur_op_mode != new_op_mode) {
 236                 iface->ht_op_mode &= ~HT_INFO_OPERATION_MODE_OP_MODE_MASK;
 237                 iface->ht_op_mode |= new_op_mode;
 238                 op_mode_changes++;
 239         }
 240
 241         wpa_printf(MSG_DEBUG, "%s new operation mode=0x%X changes=%d",
 242                    __func__, iface->ht_op_mode, op_mode_changes);
 243
 244         return op_mode_changes;
 245 }
 246
 247 #endif /* CONFIG_IEEE80211N */
 248
 249
 250 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
 251                            int probe)
 252 {
 253         int capab = WLAN_CAPABILITY_ESS;
 254         int privacy;
 255
 256         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 257             hapd->iconf->preamble == SHORT_PREAMBLE)
 258                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 259
 260         privacy = hapd->conf->ssid.wep.keys_set;
 261
 262         if (hapd->conf->ieee802_1x &&
 263             (hapd->conf->default_wep_key_len ||
 264              hapd->conf->individual_wep_key_len))
 265                 privacy = 1;
 266
 267         if (hapd->conf->wpa)
 268                 privacy = 1;
 269
 270         if (sta) {
 271                 int policy, def_klen;
 272                 if (probe && sta->ssid_probe) {
 273                         policy = sta->ssid_probe->security_policy;
 274                         def_klen = sta->ssid_probe->wep.default_len;
 275                 } else {
 276                         policy = sta->ssid->security_policy;
 277                         def_klen = sta->ssid->wep.default_len;
 278                 }
 279                 privacy = policy != SECURITY_PLAINTEXT;
 280                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
 281                         privacy = 0;
 282         }
 283
 284         if (privacy)
 285                 capab |= WLAN_CAPABILITY_PRIVACY;
 286
 287         if (hapd->iface->current_mode &&
 288             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 289             hapd->iface->num_sta_no_short_slot_time == 0)
 290                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 291
 292         return capab;
 293 }
 294
 295
 296 #ifdef CONFIG_IEEE80211W
 297 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
 298                                             struct sta_info *sta, u8 *eid)
 299 {
 300         u8 *pos = eid;
 301         u32 timeout, tu;
 302         struct os_time now, passed;
 303
 304         *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
 305         *pos++ = 5;
 306         *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
 307         os_get_time(&now);
 308         os_time_sub(&now, &sta->sa_query_start, &passed);
 309         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 310         if (hapd->conf->assoc_sa_query_max_timeout > tu)
 311                 timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
 312         else
 313                 timeout = 0;
 314         if (timeout < hapd->conf->assoc_sa_query_max_timeout)
 315                 timeout++; /* add some extra time for local timers */
 316         WPA_PUT_LE32(pos, timeout);
 317         pos += 4;
 318
 319         return pos;
 320 }
 321 #endif /* CONFIG_IEEE80211W */
 322
 323
 324 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
 325 {
 326         int i;
 327         if (len > HOSTAPD_MAX_SSID_LEN)
 328                 len = HOSTAPD_MAX_SSID_LEN;
 329         for (i = 0; i < len; i++) {
 330                 if (ssid[i] >= 32 && ssid[i] < 127)
 331                         buf[i] = ssid[i];
 332                 else
 333                         buf[i] = '.';
 334         }
 335         buf[len] = '\0';
 336 }
 337
 338
 339 /**
 340  * ieee802_11_send_deauth - Send Deauthentication frame
 341  * @hapd: hostapd BSS data
 342  * @addr: Address of the destination STA
 343  * @reason: Reason code for Deauthentication
 344  */
 345 void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
 346 {
 347         struct ieee80211_mgmt mgmt;
 348
 349         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 350                        HOSTAPD_LEVEL_DEBUG,
 351                        "deauthenticate - reason %d", reason);
 352         os_memset(&mgmt, 0, sizeof(mgmt));
 353         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 354                                           WLAN_FC_STYPE_DEAUTH);
 355         os_memcpy(mgmt.da, addr, ETH_ALEN);
 356         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
 357         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
 358         mgmt.u.deauth.reason_code = host_to_le16(reason);
 359         if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
 360                                     sizeof(mgmt.u.deauth), 0) < 0)
 361                 perror("ieee802_11_send_deauth: send");
 362 }
 363
 364
 365 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
 366                            u16 auth_transaction, u8 *challenge, int iswep)
 367 {
 368         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 369                        HOSTAPD_LEVEL_DEBUG,
 370                        "authentication (shared key, transaction %d)",
 371                        auth_transaction);
 372
 373         if (auth_transaction == 1) {
 374                 if (!sta->challenge) {
 375                         /* Generate a pseudo-random challenge */
 376                         u8 key[8];
 377                         time_t now;
 378                         int r;
 379                         sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
 380                         if (sta->challenge == NULL)
 381                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 382
 383                         now = time(NULL);
 384                         r = random();
 385                         os_memcpy(key, &now, 4);
 386                         os_memcpy(key + 4, &r, 4);
 387                         rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
 388                             key, sizeof(key));
 389                 }
 390                 return 0;
 391         }
 392
 393         if (auth_transaction != 3)
 394                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 395
 396         /* Transaction 3 */
 397         if (!iswep || !sta->challenge || !challenge ||
 398             os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
 399                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 400                                HOSTAPD_LEVEL_INFO,
 401                                "shared key authentication - invalid "
 402                                "challenge-response");
 403                 return WLAN_STATUS_CHALLENGE_FAIL;
 404         }
 405
 406         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 407                        HOSTAPD_LEVEL_DEBUG,
 408                        "authentication OK (shared key)");
 409 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 410         /* Station will be marked authenticated if it ACKs the
 411          * authentication reply. */
 412 #else
 413         sta->flags |= WLAN_STA_AUTH;
 414         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 415 #endif
 416         os_free(sta->challenge);
 417         sta->challenge = NULL;
 418
 419         return 0;
 420 }
 421
 422
 423 static void send_auth_reply(struct hostapd_data *hapd,
 424                             const u8 *dst, const u8 *bssid,
 425                             u16 auth_alg, u16 auth_transaction, u16 resp,
 426                             const u8 *ies, size_t ies_len)
 427 {
 428         struct ieee80211_mgmt *reply;
 429         u8 *buf;
 430         size_t rlen;
 431
 432         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
 433         buf = os_zalloc(rlen);
 434         if (buf == NULL)
 435                 return;
 436
 437         reply = (struct ieee80211_mgmt *) buf;
 438         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 439                                             WLAN_FC_STYPE_AUTH);
 440         os_memcpy(reply->da, dst, ETH_ALEN);
 441         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 442         os_memcpy(reply->bssid, bssid, ETH_ALEN);
 443
 444         reply->u.auth.auth_alg = host_to_le16(auth_alg);
 445         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
 446         reply->u.auth.status_code = host_to_le16(resp);
 447
 448         if (ies && ies_len)
 449                 os_memcpy(reply->u.auth.variable, ies, ies_len);
 450
 451         wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
 452                    " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
 453                    MAC2STR(dst), auth_alg, auth_transaction,
 454                    resp, (unsigned long) ies_len);
 455         if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
 456                 perror("send_auth_reply: send");
 457
 458         os_free(buf);
 459 }
 460
 461
 462 #ifdef CONFIG_IEEE80211R
 463 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
 464                                   u16 auth_transaction, u16 status,
 465                                   const u8 *ies, size_t ies_len)
 466 {
 467         struct hostapd_data *hapd = ctx;
 468         struct sta_info *sta;
 469
 470         send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
 471                         status, ies, ies_len);
 472
 473         if (status != WLAN_STATUS_SUCCESS)
 474                 return;
 475
 476         sta = ap_get_sta(hapd, dst);
 477         if (sta == NULL)
 478                 return;
 479
 480         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
 481                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
 482         sta->flags |= WLAN_STA_AUTH;
 483         mlme_authenticate_indication(hapd, sta);
 484 }
 485 #endif /* CONFIG_IEEE80211R */
 486
 487
 488 static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
 489                         size_t len)
 490 {
 491         u16 auth_alg, auth_transaction, status_code;
 492         u16 resp = WLAN_STATUS_SUCCESS;
 493         struct sta_info *sta = NULL;
 494         int res;
 495         u16 fc;
 496         u8 *challenge = NULL;
 497         u32 session_timeout, acct_interim_interval;
 498         int vlan_id = 0;
 499         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
 500         size_t resp_ies_len = 0;
 501
 502         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 503                 printf("handle_auth - too short payload (len=%lu)\n",
 504                        (unsigned long) len);
 505                 return;
 506         }
 507
 508         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 509         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 510         status_code = le_to_host16(mgmt->u.auth.status_code);
 511         fc = le_to_host16(mgmt->frame_control);
 512
 513         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
 514             2 + WLAN_AUTH_CHALLENGE_LEN &&
 515             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
 516             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
 517                 challenge = &mgmt->u.auth.variable[2];
 518
 519         wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
 520                    "auth_transaction=%d status_code=%d wep=%d%s",
 521                    MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 522                    status_code, !!(fc & WLAN_FC_ISWEP),
 523                    challenge ? " challenge" : "");
 524
 525         if (hapd->tkip_countermeasures) {
 526                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 527                 goto fail;
 528         }
 529
 530         if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
 531                auth_alg == WLAN_AUTH_OPEN) ||
 532 #ifdef CONFIG_IEEE80211R
 533               (hapd->conf->wpa &&
 534                (hapd->conf->wpa_key_mgmt &
 535                 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
 536                auth_alg == WLAN_AUTH_FT) ||
 537 #endif /* CONFIG_IEEE80211R */
 538               ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
 539                auth_alg == WLAN_AUTH_SHARED_KEY))) {
 540                 printf("Unsupported authentication algorithm (%d)\n",
 541                        auth_alg);
 542                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
 543                 goto fail;
 544         }
 545
 546         if (!(auth_transaction == 1 ||
 547               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
 548                 printf("Unknown authentication transaction number (%d)\n",
 549                        auth_transaction);
 550                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 551                 goto fail;
 552         }
 553
 554         if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
 555                 printf("Station " MACSTR " not allowed to authenticate.\n",
 556                        MAC2STR(mgmt->sa));
 557                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 558                 goto fail;
 559         }
 560
 561         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
 562                                       &session_timeout,
 563                                       &acct_interim_interval, &vlan_id);
 564         if (res == HOSTAPD_ACL_REJECT) {
 565                 printf("Station " MACSTR " not allowed to authenticate.\n",
 566                        MAC2STR(mgmt->sa));
 567                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 568                 goto fail;
 569         }
 570         if (res == HOSTAPD_ACL_PENDING) {
 571                 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
 572                            " waiting for an external authentication",
 573                            MAC2STR(mgmt->sa));
 574                 /* Authentication code will re-send the authentication frame
 575                  * after it has received (and cached) information from the
 576                  * external source. */
 577                 return;
 578         }
 579
 580         sta = ap_sta_add(hapd, mgmt->sa);
 581         if (!sta) {
 582                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 583                 goto fail;
 584         }
 585
 586         if (vlan_id > 0) {
 587                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 588                                                sta->vlan_id) == NULL) {
 589                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 590                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 591                                        "%d received from RADIUS server",
 592                                        vlan_id);
 593                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 594                         goto fail;
 595                 }
 596                 sta->vlan_id = vlan_id;
 597                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 598                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 599         }
 600
 601         sta->flags &= ~WLAN_STA_PREAUTH;
 602         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 603
 604         if (hapd->conf->radius->acct_interim_interval == 0 &&
 605             acct_interim_interval)
 606                 sta->acct_interim_interval = acct_interim_interval;
 607         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 608                 ap_sta_session_timeout(hapd, sta, session_timeout);
 609         else
 610                 ap_sta_no_session_timeout(hapd, sta);
 611
 612         switch (auth_alg) {
 613         case WLAN_AUTH_OPEN:
 614                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 615                                HOSTAPD_LEVEL_DEBUG,
 616                                "authentication OK (open system)");
 617 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 618                 /* Station will be marked authenticated if it ACKs the
 619                  * authentication reply. */
 620 #else
 621                 sta->flags |= WLAN_STA_AUTH;
 622                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 623                 sta->auth_alg = WLAN_AUTH_OPEN;
 624                 mlme_authenticate_indication(hapd, sta);
 625 #endif
 626                 break;
 627         case WLAN_AUTH_SHARED_KEY:
 628                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 629                                        fc & WLAN_FC_ISWEP);
 630                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 631                 mlme_authenticate_indication(hapd, sta);
 632                 if (sta->challenge && auth_transaction == 1) {
 633                         resp_ies[0] = WLAN_EID_CHALLENGE;
 634                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
 635                         os_memcpy(resp_ies + 2, sta->challenge,
 636                                   WLAN_AUTH_CHALLENGE_LEN);
 637                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
 638                 }
 639                 break;
 640 #ifdef CONFIG_IEEE80211R
 641         case WLAN_AUTH_FT:
 642                 sta->auth_alg = WLAN_AUTH_FT;
 643                 if (sta->wpa_sm == NULL)
 644                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 645                                                         sta->addr);
 646                 if (sta->wpa_sm == NULL) {
 647                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 648                                    "state machine");
 649                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 650                         goto fail;
 651                 }
 652                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
 653                                     auth_transaction, mgmt->u.auth.variable,
 654                                     len - IEEE80211_HDRLEN -
 655                                     sizeof(mgmt->u.auth),
 656                                     handle_auth_ft_finish, hapd);
 657                 /* handle_auth_ft_finish() callback will complete auth. */
 658                 return;
 659 #endif /* CONFIG_IEEE80211R */
 660         }
 661
 662  fail:
 663         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
 664                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
 665 }
 666
 667
 668 static void handle_assoc(struct hostapd_data *hapd,
 669                          struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
 670 {
 671         u16 capab_info, listen_interval;
 672         u16 resp = WLAN_STATUS_SUCCESS;
 673         u8 *pos, *wpa_ie;
 674         size_t wpa_ie_len;
 675         int send_deauth = 0, send_len, left, i;
 676         struct sta_info *sta;
 677         struct ieee802_11_elems elems;
 678         u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
 679         struct ieee80211_mgmt *reply;
 680
 681         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
 682                                       sizeof(mgmt->u.assoc_req))) {
 683                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
 684                        "\n", reassoc, (unsigned long) len);
 685                 return;
 686         }
 687
 688         if (reassoc) {
 689                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
 690                 listen_interval = le_to_host16(
 691                         mgmt->u.reassoc_req.listen_interval);
 692                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
 693                            " capab_info=0x%02x listen_interval=%d current_ap="
 694                            MACSTR,
 695                            MAC2STR(mgmt->sa), capab_info, listen_interval,
 696                            MAC2STR(mgmt->u.reassoc_req.current_ap));
 697                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
 698                 pos = mgmt->u.reassoc_req.variable;
 699         } else {
 700                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
 701                 listen_interval = le_to_host16(
 702                         mgmt->u.assoc_req.listen_interval);
 703                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
 704                            " capab_info=0x%02x listen_interval=%d",
 705                            MAC2STR(mgmt->sa), capab_info, listen_interval);
 706                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
 707                 pos = mgmt->u.assoc_req.variable;
 708         }
 709
 710         sta = ap_get_sta(hapd, mgmt->sa);
 711 #ifdef CONFIG_IEEE80211R
 712         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
 713             (sta->flags & WLAN_STA_AUTH) == 0) {
 714                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
 715                            "prior to authentication since it is using "
 716                            "over-the-DS FT", MAC2STR(mgmt->sa));
 717         } else
 718 #endif /* CONFIG_IEEE80211R */
 719         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
 720                 printf("STA " MACSTR " trying to associate before "
 721                        "authentication\n", MAC2STR(mgmt->sa));
 722                 if (sta) {
 723                         printf("  sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
 724                                MAC2STR(sta->addr), sta->aid, sta->flags);
 725                 }
 726                 send_deauth = 1;
 727                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 728                 goto fail;
 729         }
 730
 731         if (hapd->tkip_countermeasures) {
 732                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 733                 goto fail;
 734         }
 735
 736         if (listen_interval > hapd->conf->max_listen_interval) {
 737                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 738                                HOSTAPD_LEVEL_DEBUG,
 739                                "Too large Listen Interval (%d)",
 740                                listen_interval);
 741                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
 742                 goto fail;
 743         }
 744
 745         sta->capability = capab_info;
 746         sta->listen_interval = listen_interval;
 747
 748         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
 749          * is used */
 750         if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed ||
 751             !elems.ssid) {
 752                 printf("STA " MACSTR " sent invalid association request\n",
 753                        MAC2STR(sta->addr));
 754                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 755                 goto fail;
 756         }
 757
 758         if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
 759             os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0)
 760         {
 761                 char ssid_txt[33];
 762                 ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len);
 763                 printf("Station " MACSTR " tried to associate with "
 764                        "unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt);
 765                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 766                 goto fail;
 767         }
 768
 769         sta->flags &= ~WLAN_STA_WMM;
 770         if (elems.wmm && hapd->conf->wmm_enabled) {
 771                 if (hostapd_eid_wmm_valid(hapd, elems.wmm, elems.wmm_len))
 772                         hostapd_logger(hapd, sta->addr,
 773                                        HOSTAPD_MODULE_WPA,
 774                                        HOSTAPD_LEVEL_DEBUG,
 775                                        "invalid WMM element in association "
 776                                        "request");
 777                 else
 778                         sta->flags |= WLAN_STA_WMM;
 779         }
 780
 781         if (!elems.supp_rates) {
 782                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 783                                HOSTAPD_LEVEL_DEBUG,
 784                                "No supported rates element in AssocReq");
 785                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 786                 goto fail;
 787         }
 788
 789         if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
 790                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 791                                HOSTAPD_LEVEL_DEBUG,
 792                                "Invalid supported rates element length %d",
 793                                elems.supp_rates_len);
 794                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 795                 goto fail;
 796         }
 797
 798         os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
 799         os_memcpy(sta->supported_rates, elems.supp_rates,
 800                   elems.supp_rates_len);
 801         sta->supported_rates_len = elems.supp_rates_len;
 802
 803         if (elems.ext_supp_rates) {
 804                 if (elems.supp_rates_len + elems.ext_supp_rates_len >
 805                     sizeof(sta->supported_rates)) {
 806                         hostapd_logger(hapd, mgmt->sa,
 807                                        HOSTAPD_MODULE_IEEE80211,
 808                                        HOSTAPD_LEVEL_DEBUG,
 809                                        "Invalid supported rates element length"
 810                                        " %d+%d", elems.supp_rates_len,
 811                                        elems.ext_supp_rates_len);
 812                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 813                         goto fail;
 814                 }
 815
 816                 os_memcpy(sta->supported_rates + elems.supp_rates_len,
 817                           elems.ext_supp_rates, elems.ext_supp_rates_len);
 818                 sta->supported_rates_len += elems.ext_supp_rates_len;
 819         }
 820
 821 #ifdef CONFIG_IEEE80211N
 822         /* save HT capabilities in the sta object */
 823         os_memset(&sta->ht_capabilities, 0, sizeof(sta->ht_capabilities));
 824         if (elems.ht_capabilities &&
 825             elems.ht_capabilities_len >=
 826             sizeof(struct ieee80211_ht_capability)) {
 827                 sta->flags |= WLAN_STA_HT;
 828                 sta->ht_capabilities.id = WLAN_EID_HT_CAP;
 829                 sta->ht_capabilities.length =
 830                         sizeof(struct ieee80211_ht_capability);
 831                 os_memcpy(&sta->ht_capabilities.data,
 832                           elems.ht_capabilities,
 833                           sizeof(struct ieee80211_ht_capability));
 834         } else
 835                 sta->flags &= ~WLAN_STA_HT;
 836 #endif /* CONFIG_IEEE80211N */
 837
 838         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
 839                 wpa_ie = elems.rsn_ie;
 840                 wpa_ie_len = elems.rsn_ie_len;
 841         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
 842                    elems.wpa_ie) {
 843                 wpa_ie = elems.wpa_ie;
 844                 wpa_ie_len = elems.wpa_ie_len;
 845         } else {
 846                 wpa_ie = NULL;
 847                 wpa_ie_len = 0;
 848         }
 849 #ifdef CONFIG_WPS
 850         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
 851         if (hapd->conf->wps_state && wpa_ie == NULL) {
 852                 if (elems.wps_ie) {
 853                         wpa_printf(MSG_DEBUG, "STA included WPS IE in "
 854                                    "(Re)Association Request - assume WPS is "
 855                                    "used");
 856                         sta->flags |= WLAN_STA_WPS;
 857                         wpabuf_free(sta->wps_ie);
 858                         sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
 859                                                         elems.wps_ie_len - 4);
 860                 } else {
 861                         wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
 862                                    "in (Re)Association Request - possible WPS "
 863                                    "use");
 864                         sta->flags |= WLAN_STA_MAYBE_WPS;
 865                 }
 866         } else
 867 #endif /* CONFIG_WPS */
 868         if (hapd->conf->wpa && wpa_ie == NULL) {
 869                 printf("STA " MACSTR ": No WPA/RSN IE in association "
 870                        "request\n", MAC2STR(sta->addr));
 871                 resp = WLAN_STATUS_INVALID_IE;
 872                 goto fail;
 873         }
 874
 875         if (hapd->conf->wpa && wpa_ie) {
 876                 int res;
 877                 wpa_ie -= 2;
 878                 wpa_ie_len += 2;
 879                 if (sta->wpa_sm == NULL)
 880                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 881                                                         sta->addr);
 882                 if (sta->wpa_sm == NULL) {
 883                         printf("Failed to initialize WPA state machine\n");
 884                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 885                         goto fail;
 886                 }
 887                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 888                                           wpa_ie, wpa_ie_len,
 889                                           elems.mdie, elems.mdie_len);
 890                 if (res == WPA_INVALID_GROUP)
 891                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 892                 else if (res == WPA_INVALID_PAIRWISE)
 893                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 894                 else if (res == WPA_INVALID_AKMP)
 895                         resp = WLAN_STATUS_AKMP_NOT_VALID;
 896                 else if (res == WPA_ALLOC_FAIL)
 897                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 898 #ifdef CONFIG_IEEE80211W
 899                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
 900                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 901                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
 902                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 903 #endif /* CONFIG_IEEE80211W */
 904                 else if (res == WPA_INVALID_MDIE)
 905                         resp = WLAN_STATUS_INVALID_MDIE;
 906                 else if (res != WPA_IE_OK)
 907                         resp = WLAN_STATUS_INVALID_IE;
 908                 if (resp != WLAN_STATUS_SUCCESS)
 909                         goto fail;
 910 #ifdef CONFIG_IEEE80211W
 911                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 912                     sta->sa_query_count > 0)
 913                         ap_check_sa_query_timeout(hapd, sta);
 914                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 915                     (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
 916                         /*
 917                          * STA has already been associated with MFP and SA
 918                          * Query timeout has not been reached. Reject the
 919                          * association attempt temporarily and start SA Query,
 920                          * if one is not pending.
 921                          */
 922
 923                         if (sta->sa_query_count == 0)
 924                                 ap_sta_start_sa_query(hapd, sta);
 925
 926                         resp = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
 927                         goto fail;
 928                 }
 929
 930                 if (wpa_auth_uses_mfp(sta->wpa_sm))
 931                         sta->flags |= WLAN_STA_MFP;
 932                 else
 933                         sta->flags &= ~WLAN_STA_MFP;
 934 #endif /* CONFIG_IEEE80211W */
 935
 936 #ifdef CONFIG_IEEE80211R
 937                 if (sta->auth_alg == WLAN_AUTH_FT) {
 938                         if (!reassoc) {
 939                                 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
 940                                            "to use association (not "
 941                                            "re-association) with FT auth_alg",
 942                                            MAC2STR(sta->addr));
 943                                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 944                                 goto fail;
 945                         }
 946
 947                         resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left);
 948                         if (resp != WLAN_STATUS_SUCCESS)
 949                                 goto fail;
 950                 }
 951 #endif /* CONFIG_IEEE80211R */
 952 #ifdef CONFIG_IEEE80211N
 953                 if ((sta->flags & WLAN_STA_HT) &&
 954                     wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
 955                         wpa_printf(MSG_DEBUG, "HT: " MACSTR " tried to "
 956                                    "use TKIP with HT association",
 957                                    MAC2STR(sta->addr));
 958                         resp = WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
 959                         goto fail;
 960                 }
 961 #endif /* CONFIG_IEEE80211N */
 962         } else
 963                 wpa_auth_sta_no_wpa(sta->wpa_sm);
 964
 965         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
 966                 sta->flags |= WLAN_STA_NONERP;
 967         for (i = 0; i < sta->supported_rates_len; i++) {
 968                 if ((sta->supported_rates[i] & 0x7f) > 22) {
 969                         sta->flags &= ~WLAN_STA_NONERP;
 970                         break;
 971                 }
 972         }
 973         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
 974                 sta->nonerp_set = 1;
 975                 hapd->iface->num_sta_non_erp++;
 976                 if (hapd->iface->num_sta_non_erp == 1)
 977                         ieee802_11_set_beacons(hapd->iface);
 978         }
 979
 980         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
 981             !sta->no_short_slot_time_set) {
 982                 sta->no_short_slot_time_set = 1;
 983                 hapd->iface->num_sta_no_short_slot_time++;
 984                 if (hapd->iface->current_mode->mode ==
 985                     HOSTAPD_MODE_IEEE80211G &&
 986                     hapd->iface->num_sta_no_short_slot_time == 1)
 987                         ieee802_11_set_beacons(hapd->iface);
 988         }
 989
 990         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
 991                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 992         else
 993                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 994
 995         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
 996             !sta->no_short_preamble_set) {
 997                 sta->no_short_preamble_set = 1;
 998                 hapd->iface->num_sta_no_short_preamble++;
 999                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1000                     && hapd->iface->num_sta_no_short_preamble == 1)
1001                         ieee802_11_set_beacons(hapd->iface);
1002         }
1003
1004 #ifdef CONFIG_IEEE80211N
1005         if (sta->flags & WLAN_STA_HT) {
1006                 u16 ht_capab = le_to_host16(
1007                         sta->ht_capabilities.data.capabilities_info);
1008                 wpa_printf(MSG_DEBUG, "HT: STA " MACSTR " HT Capabilities "
1009                            "Info: 0x%04x", MAC2STR(sta->addr), ht_capab);
1010                 if ((ht_capab & HT_CAP_INFO_GREEN_FIELD) == 0) {
1011                         if (!sta->no_ht_gf_set) {
1012                                 sta->no_ht_gf_set = 1;
1013                                 hapd->iface->num_sta_ht_no_gf++;
1014                         }
1015                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no "
1016                                    "greenfield, num of non-gf stations %d",
1017                                    __func__, MAC2STR(sta->addr),
1018                                    hapd->iface->num_sta_ht_no_gf);
1019                 }
1020                 if ((ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) {
1021                         if (!sta->ht_20mhz_set) {
1022                                 sta->ht_20mhz_set = 1;
1023                                 hapd->iface->num_sta_ht_20mhz++;
1024                         }
1025                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, "
1026                                    "num of 20MHz HT STAs %d",
1027                                    __func__, MAC2STR(sta->addr),
1028                                    hapd->iface->num_sta_ht_20mhz);
1029                 }
1030         } else {
1031                 if (!sta->no_ht_set) {
1032                         sta->no_ht_set = 1;
1033                         hapd->iface->num_sta_no_ht++;
1034                 }
1035                 if (hapd->iconf->ieee80211n) {
1036                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR
1037                                    " - no HT, num of non-HT stations %d",
1038                                    __func__, MAC2STR(sta->addr),
1039                                    hapd->iface->num_sta_no_ht);
1040                 }
1041         }
1042
1043         if (hostapd_ht_operation_update(hapd->iface) > 0)
1044                 ieee802_11_set_beacons(hapd->iface);
1045 #endif /* CONFIG_IEEE80211N */
1046
1047         /* get a unique AID */
1048         if (sta->aid > 0) {
1049                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
1050         } else {
1051                 for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
1052                         if (hapd->sta_aid[sta->aid - 1] == NULL)
1053                                 break;
1054                 if (sta->aid > MAX_AID_TABLE_SIZE) {
1055                         sta->aid = 0;
1056                         resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1057                         wpa_printf(MSG_ERROR, "  no room for more AIDs");
1058                         goto fail;
1059                 } else {
1060                         hapd->sta_aid[sta->aid - 1] = sta;
1061                         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
1062                 }
1063         }
1064
1065         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1066                        HOSTAPD_LEVEL_DEBUG,
1067                        "association OK (aid %d)", sta->aid);
1068         /* Station will be marked associated, after it acknowledges AssocResp
1069          */
1070
1071 #ifdef CONFIG_IEEE80211W
1072         if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1073                 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1074                            "SA Query procedure", reassoc ? "re" : "");
1075                 /* TODO: Send a protected Disassociate frame to the STA using
1076                  * the old key and Reason Code "Previous Authentication no
1077                  * longer valid". Make sure this is only sent protected since
1078                  * unprotected frame would be received by the STA that is now
1079                  * trying to associate.
1080                  */
1081         }
1082 #endif /* CONFIG_IEEE80211W */
1083
1084         if (reassoc) {
1085                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1086                           ETH_ALEN);
1087         }
1088
1089         if (sta->last_assoc_req)
1090                 os_free(sta->last_assoc_req);
1091         sta->last_assoc_req = os_malloc(len);
1092         if (sta->last_assoc_req)
1093                 os_memcpy(sta->last_assoc_req, mgmt, len);
1094
1095         /* Make sure that the previously registered inactivity timer will not
1096          * remove the STA immediately. */
1097         sta->timeout_next = STA_NULLFUNC;
1098
1099  fail:
1100         os_memset(buf, 0, sizeof(buf));
1101         reply = (struct ieee80211_mgmt *) buf;
1102         reply->frame_control =
1103                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1104                              (send_deauth ? WLAN_FC_STYPE_DEAUTH :
1105                               (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1106                                WLAN_FC_STYPE_ASSOC_RESP)));
1107         os_memcpy(reply->da, mgmt->sa, ETH_ALEN);
1108         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1109         os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
1110
1111         send_len = IEEE80211_HDRLEN;
1112         if (send_deauth) {
1113                 send_len += sizeof(reply->u.deauth);
1114                 reply->u.deauth.reason_code = host_to_le16(resp);
1115         } else {
1116                 u8 *p;
1117                 send_len += sizeof(reply->u.assoc_resp);
1118                 reply->u.assoc_resp.capab_info =
1119                         host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1120                 reply->u.assoc_resp.status_code = host_to_le16(resp);
1121                 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1122                                                        | BIT(14) | BIT(15));
1123                 /* Supported rates */
1124                 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1125                 /* Extended supported rates */
1126                 p = hostapd_eid_ext_supp_rates(hapd, p);
1127                 if (sta->flags & WLAN_STA_WMM)
1128                         p = hostapd_eid_wmm(hapd, p);
1129
1130                 p = hostapd_eid_ht_capabilities_info(hapd, p);
1131                 p = hostapd_eid_ht_operation(hapd, p);
1132
1133 #ifdef CONFIG_IEEE80211R
1134                 if (resp == WLAN_STATUS_SUCCESS) {
1135                         /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1136                          * Transition Information, RSN, [RIC Response] */
1137                         p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1138                                                         buf + sizeof(buf) - p,
1139                                                         sta->auth_alg,
1140                                                         pos, left);
1141                 }
1142 #endif /* CONFIG_IEEE80211R */
1143
1144 #ifdef CONFIG_IEEE80211W
1145                 if (resp == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1146                         p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1147 #endif /* CONFIG_IEEE80211W */
1148
1149                 send_len += p - reply->u.assoc_resp.variable;
1150         }
1151
1152         if (hostapd_send_mgmt_frame(hapd, reply, send_len, 0) < 0)
1153                 perror("handle_assoc: send");
1154 }
1155
1156
1157 static void handle_disassoc(struct hostapd_data *hapd,
1158                             struct ieee80211_mgmt *mgmt, size_t len)
1159 {
1160         struct sta_info *sta;
1161
1162         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1163                 printf("handle_disassoc - too short payload (len=%lu)\n",
1164                        (unsigned long) len);
1165                 return;
1166         }
1167
1168         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1169                    MAC2STR(mgmt->sa),
1170                    le_to_host16(mgmt->u.disassoc.reason_code));
1171
1172         sta = ap_get_sta(hapd, mgmt->sa);
1173         if (sta == NULL) {
1174                 printf("Station " MACSTR " trying to disassociate, but it "
1175                        "is not associated.\n", MAC2STR(mgmt->sa));
1176                 return;
1177         }
1178
1179         sta->flags &= ~WLAN_STA_ASSOC;
1180         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1181         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1182                        HOSTAPD_LEVEL_INFO, "disassociated");
1183         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1184         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1185         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1186          * authenticated. */
1187         accounting_sta_stop(hapd, sta);
1188         ieee802_1x_free_station(sta);
1189         hostapd_sta_remove(hapd, sta->addr);
1190
1191         if (sta->timeout_next == STA_NULLFUNC ||
1192             sta->timeout_next == STA_DISASSOC) {
1193                 sta->timeout_next = STA_DEAUTH;
1194                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1195                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1196                                        hapd, sta);
1197         }
1198
1199         mlme_disassociate_indication(
1200                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1201 }
1202
1203
1204 static void handle_deauth(struct hostapd_data *hapd,
1205                           struct ieee80211_mgmt *mgmt, size_t len)
1206 {
1207         struct sta_info *sta;
1208
1209         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1210                 printf("handle_deauth - too short payload (len=%lu)\n",
1211                        (unsigned long) len);
1212                 return;
1213         }
1214
1215         wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1216                    " reason_code=%d",
1217                    MAC2STR(mgmt->sa),
1218                    le_to_host16(mgmt->u.deauth.reason_code));
1219
1220         sta = ap_get_sta(hapd, mgmt->sa);
1221         if (sta == NULL) {
1222                 printf("Station " MACSTR " trying to deauthenticate, but it "
1223                        "is not authenticated.\n", MAC2STR(mgmt->sa));
1224                 return;
1225         }
1226
1227         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1228         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1229         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1230                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1231         mlme_deauthenticate_indication(
1232                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1233         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1234         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1235         ap_free_sta(hapd, sta);
1236 }
1237
1238
1239 static void handle_beacon(struct hostapd_data *hapd,
1240                           struct ieee80211_mgmt *mgmt, size_t len,
1241                           struct hostapd_frame_info *fi)
1242 {
1243         struct ieee802_11_elems elems;
1244
1245         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1246                 printf("handle_beacon - too short payload (len=%lu)\n",
1247                        (unsigned long) len);
1248                 return;
1249         }
1250
1251         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1252                                       len - (IEEE80211_HDRLEN +
1253                                              sizeof(mgmt->u.beacon)), &elems,
1254                                       0);
1255
1256         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1257 }
1258
1259
1260 #ifdef CONFIG_IEEE80211W
1261
1262 /* MLME-SAQuery.request */
1263 void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
1264                                   const u8 *addr, const u8 *trans_id)
1265 {
1266         struct ieee80211_mgmt mgmt;
1267         u8 *end;
1268
1269         os_memset(&mgmt, 0, sizeof(mgmt));
1270         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1271                                           WLAN_FC_STYPE_ACTION);
1272         os_memcpy(mgmt.da, addr, ETH_ALEN);
1273         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
1274         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
1275         mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
1276         mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
1277         os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
1278                   WLAN_SA_QUERY_TR_ID_LEN);
1279         end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1280         if (hostapd_send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt, 0) < 0)
1281                 perror("ieee802_11_send_sa_query_req: send");
1282 }
1283
1284
1285 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1286                                     struct ieee80211_mgmt *mgmt, size_t len)
1287 {
1288         struct sta_info *sta;
1289         u8 *end;
1290         int i;
1291
1292         end = mgmt->u.action.u.sa_query_resp.trans_id +
1293                 WLAN_SA_QUERY_TR_ID_LEN;
1294         if (((u8 *) mgmt) + len < end) {
1295                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1296                            "frame (len=%lu)", (unsigned long) len);
1297                 return;
1298         }
1299
1300         if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
1301                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
1302                            "Action %d", mgmt->u.action.u.sa_query_resp.action);
1303                 return;
1304         }
1305
1306         /* MLME-SAQuery.confirm */
1307
1308         sta = ap_get_sta(hapd, mgmt->sa);
1309         if (sta == NULL || sta->sa_query_trans_id == NULL) {
1310                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
1311                            "pending SA Query request found");
1312                 return;
1313         }
1314
1315         for (i = 0; i < sta->sa_query_count; i++) {
1316                 if (os_memcmp(sta->sa_query_trans_id +
1317                               i * WLAN_SA_QUERY_TR_ID_LEN,
1318                               mgmt->u.action.u.sa_query_resp.trans_id,
1319                               WLAN_SA_QUERY_TR_ID_LEN) == 0)
1320                         break;
1321         }
1322
1323         if (i >= sta->sa_query_count) {
1324                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
1325                            "transaction identifier found");
1326                 return;
1327         }
1328
1329         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1330                        HOSTAPD_LEVEL_DEBUG,
1331                        "Reply to pending SA Query received");
1332         ap_sta_stop_sa_query(hapd, sta);
1333 }
1334 #endif /* CONFIG_IEEE80211W */
1335
1336
1337 static void handle_action(struct hostapd_data *hapd,
1338                           struct ieee80211_mgmt *mgmt, size_t len)
1339 {
1340         if (len < IEEE80211_HDRLEN + 1) {
1341                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1342                                HOSTAPD_LEVEL_DEBUG,
1343                                "handle_action - too short payload (len=%lu)",
1344                                (unsigned long) len);
1345                 return;
1346         }
1347
1348         switch (mgmt->u.action.category) {
1349 #ifdef CONFIG_IEEE80211R
1350         case WLAN_ACTION_FT:
1351         {
1352                 struct sta_info *sta;
1353
1354                 sta = ap_get_sta(hapd, mgmt->sa);
1355                 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1356                         wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1357                                    "frame from unassociated STA " MACSTR,
1358                                    MAC2STR(mgmt->sa));
1359                         return;
1360                 }
1361
1362                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1363                                      len - IEEE80211_HDRLEN))
1364                         break;
1365
1366                 return;
1367         }
1368 #endif /* CONFIG_IEEE80211R */
1369         case WLAN_ACTION_WMM:
1370                 hostapd_wmm_action(hapd, mgmt, len);
1371                 return;
1372 #ifdef CONFIG_IEEE80211W
1373         case WLAN_ACTION_SA_QUERY:
1374                 hostapd_sa_query_action(hapd, mgmt, len);
1375                 return;
1376 #endif /* CONFIG_IEEE80211W */
1377         }
1378
1379         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1380                        HOSTAPD_LEVEL_DEBUG,
1381                        "handle_action - unknown action category %d or invalid "
1382                        "frame",
1383                        mgmt->u.action.category);
1384         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1385             !(mgmt->sa[0] & 0x01)) {
1386                 /*
1387                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1388                  * Return the Action frame to the source without change
1389                  * except that MSB of the Category set to 1.
1390                  */
1391                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1392                            "frame back to sender");
1393                 os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1394                 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1395                 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
1396                 mgmt->u.action.category |= 0x80;
1397
1398                 hostapd_send_mgmt_frame(hapd, mgmt, len, 0);
1399         }
1400 }
1401
1402
1403 /**
1404  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1405  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1406  * sent to)
1407  * @buf: management frame data (starting from IEEE 802.11 header)
1408  * @len: length of frame data in octets
1409  * @stype: management frame subtype from frame control field
1410  * @fi: meta data about received frame (signal level, etc.)
1411  *
1412  * Process all incoming IEEE 802.11 management frames. This will be called for
1413  * each frame received from the kernel driver through wlan#ap interface. In
1414  * addition, it can be called to re-inserted pending frames (e.g., when using
1415  * external RADIUS server as an MAC ACL).
1416  */
1417 void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype,
1418                      struct hostapd_frame_info *fi)
1419 {
1420         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1421         int broadcast;
1422
1423         if (stype == WLAN_FC_STYPE_BEACON) {
1424                 handle_beacon(hapd, mgmt, len, fi);
1425                 return;
1426         }
1427
1428         if (fi && fi->passive_scan)
1429                 return;
1430
1431         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1432                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1433                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1434
1435         if (!broadcast &&
1436             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1437                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1438                        MAC2STR(mgmt->bssid));
1439                 return;
1440         }
1441
1442
1443         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1444                 handle_probe_req(hapd, mgmt, len);
1445                 return;
1446         }
1447
1448         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1449                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1450                                HOSTAPD_LEVEL_DEBUG,
1451                                "MGMT: DA=" MACSTR " not our address",
1452                                MAC2STR(mgmt->da));
1453                 return;
1454         }
1455
1456         switch (stype) {
1457         case WLAN_FC_STYPE_AUTH:
1458                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1459                 handle_auth(hapd, mgmt, len);
1460                 break;
1461         case WLAN_FC_STYPE_ASSOC_REQ:
1462                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1463                 handle_assoc(hapd, mgmt, len, 0);
1464                 break;
1465         case WLAN_FC_STYPE_REASSOC_REQ:
1466                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1467                 handle_assoc(hapd, mgmt, len, 1);
1468                 break;
1469         case WLAN_FC_STYPE_DISASSOC:
1470                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1471                 handle_disassoc(hapd, mgmt, len);
1472                 break;
1473         case WLAN_FC_STYPE_DEAUTH:
1474                 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1475                 handle_deauth(hapd, mgmt, len);
1476                 break;
1477         case WLAN_FC_STYPE_ACTION:
1478                 wpa_printf(MSG_DEBUG, "mgmt::action");
1479                 handle_action(hapd, mgmt, len);
1480                 break;
1481         default:
1482                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1483                                HOSTAPD_LEVEL_DEBUG,
1484                                "unknown mgmt frame subtype %d", stype);
1485                 break;
1486         }
1487 }
1488
1489
1490 static void handle_auth_cb(struct hostapd_data *hapd,
1491                            struct ieee80211_mgmt *mgmt,
1492                            size_t len, int ok)
1493 {
1494         u16 auth_alg, auth_transaction, status_code;
1495         struct sta_info *sta;
1496
1497         if (!ok) {
1498                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1499                                HOSTAPD_LEVEL_NOTICE,
1500                                "did not acknowledge authentication response");
1501                 return;
1502         }
1503
1504         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1505                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1506                        (unsigned long) len);
1507                 return;
1508         }
1509
1510         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1511         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1512         status_code = le_to_host16(mgmt->u.auth.status_code);
1513
1514         sta = ap_get_sta(hapd, mgmt->da);
1515         if (!sta) {
1516                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1517                        MAC2STR(mgmt->da));
1518                 return;
1519         }
1520
1521         if (status_code == WLAN_STATUS_SUCCESS &&
1522             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1523              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1524                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1525                                HOSTAPD_LEVEL_INFO, "authenticated");
1526                 sta->flags |= WLAN_STA_AUTH;
1527         }
1528 }
1529
1530
1531 #ifdef CONFIG_IEEE80211N
1532 static void
1533 hostapd_get_ht_capab(struct hostapd_data *hapd,
1534                      struct ht_cap_ie *ht_cap_ie,
1535                      struct ht_cap_ie *neg_ht_cap_ie)
1536 {
1537
1538         os_memcpy(neg_ht_cap_ie, ht_cap_ie, sizeof(struct ht_cap_ie));
1539         neg_ht_cap_ie->data.capabilities_info =
1540                 ht_cap_ie->data.capabilities_info & hapd->iconf->ht_capab;
1541
1542         neg_ht_cap_ie->data.capabilities_info &= ~HT_CAP_INFO_SMPS_DISABLED;
1543         if ((ht_cap_ie->data.capabilities_info & HT_CAP_INFO_SMPS_DISABLED) ==
1544             (hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED))
1545                 neg_ht_cap_ie->data.capabilities_info |=
1546                         hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED;
1547         else
1548                 neg_ht_cap_ie->data.capabilities_info |=
1549                         HT_CAP_INFO_SMPS_DISABLED;
1550
1551         /* FIXME: Rx STBC needs to be handled specially */
1552         neg_ht_cap_ie->data.capabilities_info &= ~HT_CAP_INFO_RX_STBC_MASK;
1553         neg_ht_cap_ie->data.capabilities_info |=
1554                 hapd->iconf->ht_capab & HT_CAP_INFO_RX_STBC_MASK;
1555 }
1556 #endif /* CONFIG_IEEE80211N */
1557
1558
1559 static void handle_assoc_cb(struct hostapd_data *hapd,
1560                             struct ieee80211_mgmt *mgmt,
1561                             size_t len, int reassoc, int ok)
1562 {
1563         u16 status;
1564         struct sta_info *sta;
1565         int new_assoc = 1;
1566 #ifdef CONFIG_IEEE80211N
1567         struct ht_cap_ie ht_cap;
1568 #endif /* CONFIG_IEEE80211N */
1569         struct ht_cap_ie *ht_cap_ptr = NULL;
1570
1571         if (!ok) {
1572                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1573                                HOSTAPD_LEVEL_DEBUG,
1574                                "did not acknowledge association response");
1575                 return;
1576         }
1577
1578         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1579                                       sizeof(mgmt->u.assoc_resp))) {
1580                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1581                        "(len=%lu)\n", reassoc, (unsigned long) len);
1582                 return;
1583         }
1584
1585         if (reassoc)
1586                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1587         else
1588                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1589
1590         sta = ap_get_sta(hapd, mgmt->da);
1591         if (!sta) {
1592                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1593                        MAC2STR(mgmt->da));
1594                 return;
1595         }
1596
1597         if (status != WLAN_STATUS_SUCCESS)
1598                 goto fail;
1599
1600         /* Stop previous accounting session, if one is started, and allocate
1601          * new session id for the new session. */
1602         accounting_sta_stop(hapd, sta);
1603
1604         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1605                        HOSTAPD_LEVEL_INFO,
1606                        "associated (aid %d)",
1607                        sta->aid);
1608
1609         if (sta->flags & WLAN_STA_ASSOC)
1610                 new_assoc = 0;
1611         sta->flags |= WLAN_STA_ASSOC;
1612
1613         if (reassoc)
1614                 mlme_reassociate_indication(hapd, sta);
1615         else
1616                 mlme_associate_indication(hapd, sta);
1617
1618 #ifdef CONFIG_IEEE80211N
1619         if (sta->flags & WLAN_STA_HT) {
1620                 ht_cap_ptr = &ht_cap;
1621                 hostapd_get_ht_capab(hapd, &sta->ht_capabilities, ht_cap_ptr);
1622         }
1623 #endif /* CONFIG_IEEE80211N */
1624
1625 #ifdef CONFIG_IEEE80211W
1626         sta->sa_query_timed_out = 0;
1627 #endif /* CONFIG_IEEE80211W */
1628
1629         if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1630                             sta->capability, sta->supported_rates,
1631                             sta->supported_rates_len, 0, sta->listen_interval,
1632                             ht_cap_ptr))
1633         {
1634                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1635                                HOSTAPD_LEVEL_NOTICE,
1636                                "Could not add STA to kernel driver");
1637         }
1638
1639         if (sta->eapol_sm == NULL) {
1640                 /*
1641                  * This STA does not use RADIUS server for EAP authentication,
1642                  * so bind it to the selected VLAN interface now, since the
1643                  * interface selection is not going to change anymore.
1644                  */
1645                 ap_sta_bind_vlan(hapd, sta, 0);
1646         } else if (sta->vlan_id) {
1647                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1648                 ap_sta_bind_vlan(hapd, sta, 0);
1649         }
1650         if (sta->flags & WLAN_STA_SHORT_PREAMBLE) {
1651                 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1652                                       WLAN_STA_SHORT_PREAMBLE, ~0);
1653         } else {
1654                 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1655                                       0, ~WLAN_STA_SHORT_PREAMBLE);
1656         }
1657
1658         if (sta->auth_alg == WLAN_AUTH_FT)
1659                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1660         else
1661                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1662         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
1663
1664         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1665
1666  fail:
1667         /* Copy of the association request is not needed anymore */
1668         if (sta->last_assoc_req) {
1669                 os_free(sta->last_assoc_req);
1670                 sta->last_assoc_req = NULL;
1671         }
1672 }
1673
1674
1675 /**
1676  * ieee802_11_mgmt_cb - Process management frame TX status callback
1677  * @hapd: hostapd BSS data structure (the BSS from which the management frame
1678  * was sent from)
1679  * @buf: management frame data (starting from IEEE 802.11 header)
1680  * @len: length of frame data in octets
1681  * @stype: management frame subtype from frame control field
1682  * @ok: Whether the frame was ACK'ed
1683  */
1684 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
1685                         u16 stype, int ok)
1686 {
1687         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1688
1689         switch (stype) {
1690         case WLAN_FC_STYPE_AUTH:
1691                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1692                 handle_auth_cb(hapd, mgmt, len, ok);
1693                 break;
1694         case WLAN_FC_STYPE_ASSOC_RESP:
1695                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1696                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1697                 break;
1698         case WLAN_FC_STYPE_REASSOC_RESP:
1699                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1700                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1701                 break;
1702         case WLAN_FC_STYPE_PROBE_RESP:
1703                 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1704                 break;
1705         case WLAN_FC_STYPE_DEAUTH:
1706                 /* ignore */
1707                 break;
1708         case WLAN_FC_STYPE_ACTION:
1709                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1710                 break;
1711         default:
1712                 printf("unknown mgmt cb frame subtype %d\n", stype);
1713                 break;
1714         }
1715 }
1716
1717
1718 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1719 {
1720         /* TODO */
1721         return 0;
1722 }
1723
1724
1725 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1726                            char *buf, size_t buflen)
1727 {
1728         /* TODO */
1729         return 0;
1730 }
1731
1732 #endif /* CONFIG_NATIVE_WINDOWS */