vcs.maemo.org Git - wpasupplicant/blob - hostapd/driver_nl80211.c

   1 /*
   2  * hostapd / Kernel driver communication via nl80211
   3  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Alternatively, this software may be distributed under the terms of BSD
  13  * license.
  14  *
  15  * See README and COPYING for more details.
  16  */
  17
  18 #include "includes.h"
  19
  20 #include <sys/ioctl.h>
  21 #include <netlink/genl/genl.h>
  22 #include <netlink/genl/family.h>
  23 #include <netlink/genl/ctrl.h>
  24 #include <netlink/msg.h>
  25 #include <netlink/attr.h>
  26 #include "nl80211_copy.h"
  27 #include <net/if.h>
  28 #include <netpacket/packet.h>
  29 #include "wireless_copy.h"
  30 #include <net/if_arp.h>
  31
  32 #include "hostapd.h"
  33 #include "driver.h"
  34 #include "ieee802_1x.h"
  35 #include "eloop.h"
  36 #include "ieee802_11.h"
  37 #include "sta_info.h"
  38 #include "hw_features.h"
  39 #include "mlme.h"
  40 #include "radiotap.h"
  41 #include "radiotap_iter.h"
  42
  43 #ifdef CONFIG_LIBNL20
  44 /* libnl 2.0 compatibility code */
  45 #define nl_handle_alloc_cb nl_socket_alloc_cb
  46 #define nl_handle_destroy nl_socket_free
  47 #endif /* CONFIG_LIBNL20 */
  48
  49 enum ieee80211_msg_type {
  50         ieee80211_msg_normal = 0,
  51         ieee80211_msg_tx_callback_ack = 1,
  52         ieee80211_msg_tx_callback_fail = 2,
  53 };
  54
  55 struct i802_driver_data {
  56         struct hostapd_data *hapd;
  57
  58         char iface[IFNAMSIZ + 1];
  59         int bridge;
  60         int ioctl_sock; /* socket for ioctl() use */
  61         int wext_sock; /* socket for wireless events */
  62         int eapol_sock; /* socket for EAPOL frames */
  63         int monitor_sock; /* socket for monitor */
  64         int monitor_ifidx;
  65
  66         int default_if_indices[16];
  67         int *if_indices;
  68         int num_if_indices;
  69
  70         int we_version;
  71         struct nl_handle *nl_handle;
  72         struct nl_cache *nl_cache;
  73         struct nl_cb *nl_cb;
  74         struct genl_family *nl80211;
  75         int dtim_period, beacon_int;
  76         unsigned int beacon_set:1;
  77         unsigned int ieee802_1x_active:1;
  78
  79         int last_freq;
  80         int last_freq_ht;
  81 };
  82
  83
  84 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
  85 {
  86         int i;
  87         int *old;
  88
  89         for (i = 0; i < drv->num_if_indices; i++) {
  90                 if (drv->if_indices[i] == 0) {
  91                         drv->if_indices[i] = ifidx;
  92                         return;
  93                 }
  94         }
  95
  96         if (drv->if_indices != drv->default_if_indices)
  97                 old = drv->if_indices;
  98         else
  99                 old = NULL;
 100
 101         drv->if_indices = realloc(old,
 102                                   sizeof(int) * (drv->num_if_indices + 1));
 103         if (!drv->if_indices) {
 104                 if (!old)
 105                         drv->if_indices = drv->default_if_indices;
 106                 else
 107                         drv->if_indices = old;
 108                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
 109                            "interfaces");
 110                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
 111                 return;
 112         }
 113         drv->if_indices[drv->num_if_indices] = ifidx;
 114         drv->num_if_indices++;
 115 }
 116
 117
 118 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
 119 {
 120         int i;
 121
 122         for (i = 0; i < drv->num_if_indices; i++) {
 123                 if (drv->if_indices[i] == ifidx) {
 124                         drv->if_indices[i] = 0;
 125                         break;
 126                 }
 127         }
 128 }
 129
 130
 131 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
 132 {
 133         int i;
 134
 135         if (ifidx == drv->bridge)
 136                 return 1;
 137
 138         for (i = 0; i < drv->num_if_indices; i++)
 139                 if (drv->if_indices[i] == ifidx)
 140                         return 1;
 141
 142         return 0;
 143 }
 144
 145
 146 /* nl80211 code */
 147 static int ack_handler(struct nl_msg *msg, void *arg)
 148 {
 149         int *err = arg;
 150         *err = 0;
 151         return NL_STOP;
 152 }
 153
 154 static int finish_handler(struct nl_msg *msg, void *arg)
 155 {
 156         int *ret = arg;
 157         *ret = 0;
 158         return NL_SKIP;
 159 }
 160
 161 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 162                          void *arg)
 163 {
 164         int *ret = arg;
 165         *ret = err->error;
 166         return NL_SKIP;
 167 }
 168
 169 static int send_and_recv_msgs(struct i802_driver_data *drv,
 170                               struct nl_msg *msg,
 171                               int (*valid_handler)(struct nl_msg *, void *),
 172                               void *valid_data)
 173 {
 174         struct nl_cb *cb;
 175         int err = -ENOMEM;
 176
 177         cb = nl_cb_clone(drv->nl_cb);
 178         if (!cb)
 179                 goto out;
 180
 181         err = nl_send_auto_complete(drv->nl_handle, msg);
 182         if (err < 0)
 183                 goto out;
 184
 185         err = 1;
 186
 187         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 188         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 189         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 190
 191         if (valid_handler)
 192                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 193                           valid_handler, valid_data);
 194
 195         while (err > 0)
 196                 nl_recvmsgs(drv->nl_handle, cb);
 197  out:
 198         nl_cb_put(cb);
 199         nlmsg_free(msg);
 200         return err;
 201 }
 202
 203 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
 204                                    const char *ifname, int dev_up)
 205 {
 206         struct ifreq ifr;
 207
 208         if (drv->ioctl_sock < 0)
 209                 return -1;
 210
 211         memset(&ifr, 0, sizeof(ifr));
 212         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 213
 214         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 215                 perror("ioctl[SIOCGIFFLAGS]");
 216                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 217                            drv->iface);
 218                 return -1;
 219         }
 220
 221         if (dev_up)
 222                 ifr.ifr_flags |= IFF_UP;
 223         else
 224                 ifr.ifr_flags &= ~IFF_UP;
 225
 226         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 227                 perror("ioctl[SIOCSIFFLAGS]");
 228                 return -1;
 229         }
 230
 231         return 0;
 232 }
 233
 234
 235 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
 236                        const char *alg, const u8 *addr, int idx, const u8 *key,
 237                        size_t key_len, int txkey)
 238 {
 239         struct nl_msg *msg;
 240         int ret;
 241
 242         msg = nlmsg_alloc();
 243         if (!msg)
 244                 return -ENOMEM;
 245
 246         if (strcmp(alg, "none") == 0) {
 247                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 248                             0, NL80211_CMD_DEL_KEY, 0);
 249         } else {
 250                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 251                             0, NL80211_CMD_NEW_KEY, 0);
 252                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
 253                 if (strcmp(alg, "WEP") == 0) {
 254                         if (key_len == 5)
 255                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 256                                             0x000FAC01);
 257                         else
 258                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 259                                             0x000FAC05);
 260                 } else if (strcmp(alg, "TKIP") == 0)
 261                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
 262                 else if (strcmp(alg, "CCMP") == 0)
 263                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
 264                 else if (strcmp(alg, "IGTK") == 0)
 265                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
 266                 else {
 267                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
 268                                    "algorithm '%s'", __func__, alg);
 269                         nlmsg_free(msg);
 270                         return -1;
 271                 }
 272         }
 273
 274         if (addr)
 275                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 276         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 277         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 278
 279         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 280         if (ret == -ENOENT)
 281                 ret = 0;
 282
 283         /*
 284          * If we failed or don't need to set the default TX key (below),
 285          * we're done here.
 286          */
 287         if (ret || !txkey || addr)
 288                 return ret;
 289
 290         msg = nlmsg_alloc();
 291         if (!msg)
 292                 return -ENOMEM;
 293
 294         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 295                     0, NL80211_CMD_SET_KEY, 0);
 296         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 297         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 298 #ifdef NL80211_MFP_PENDING
 299         if (strcmp(alg, "IGTK") == 0)
 300                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
 301         else
 302                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 303 #else /* NL80211_MFP_PENDING */
 304         NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 305 #endif /* NL80211_MFP_PENDING */
 306
 307         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 308         if (ret == -ENOENT)
 309                 ret = 0;
 310         return ret;
 311  nla_put_failure:
 312         return -ENOBUFS;
 313 }
 314
 315
 316 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
 317                                const u8 *addr, int idx, const u8 *key,
 318                                size_t key_len, int txkey)
 319 {
 320         struct i802_driver_data *drv = priv;
 321         int ret;
 322
 323         ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
 324                           key_len, txkey);
 325         if (ret < 0)
 326                 return ret;
 327
 328         return ret;
 329 }
 330
 331
 332 static inline int min_int(int a, int b)
 333 {
 334         if (a < b)
 335                 return a;
 336         return b;
 337 }
 338
 339
 340 static int get_key_handler(struct nl_msg *msg, void *arg)
 341 {
 342         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 343         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 344
 345         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 346                   genlmsg_attrlen(gnlh, 0), NULL);
 347
 348         /*
 349          * TODO: validate the key index and mac address!
 350          * Otherwise, there's a race condition as soon as
 351          * the kernel starts sending key notifications.
 352          */
 353
 354         if (tb[NL80211_ATTR_KEY_SEQ])
 355                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 356                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
 357         return NL_SKIP;
 358 }
 359
 360
 361 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
 362                            int idx, u8 *seq)
 363 {
 364         struct i802_driver_data *drv = priv;
 365         struct nl_msg *msg;
 366
 367         msg = nlmsg_alloc();
 368         if (!msg)
 369                 return -ENOMEM;
 370
 371         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 372                     0, NL80211_CMD_GET_KEY, 0);
 373
 374         if (addr)
 375                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 376         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 377         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
 378
 379         memset(seq, 0, 6);
 380
 381         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
 382  nla_put_failure:
 383         return -ENOBUFS;
 384 }
 385
 386
 387 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
 388                               int mode)
 389 {
 390         struct i802_driver_data *drv = priv;
 391         struct nl_msg *msg;
 392         u8 rates[NL80211_MAX_SUPP_RATES];
 393         u8 rates_len = 0;
 394         int i;
 395
 396         msg = nlmsg_alloc();
 397         if (!msg)
 398                 return -ENOMEM;
 399
 400         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 401                     NL80211_CMD_SET_BSS, 0);
 402
 403         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
 404                 rates[rates_len++] = basic_rates[i] / 5;
 405
 406         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
 407
 408         /* TODO: multi-BSS support */
 409         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 410
 411         return send_and_recv_msgs(drv, msg, NULL, NULL);
 412  nla_put_failure:
 413         return -ENOBUFS;
 414 }
 415
 416
 417 static int i802_send_frame(void *priv, const void *data, size_t len,
 418                            int encrypt, int flags)
 419 {
 420         __u8 rtap_hdr[] = {
 421                 0x00, 0x00, /* radiotap version */
 422                 0x0e, 0x00, /* radiotap length */
 423                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
 424                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
 425                 0x00,       /* padding */
 426                 0x00, 0x00, /* RX and TX flags to indicate that */
 427                 0x00, 0x00, /* this is the injected frame directly */
 428         };
 429         struct i802_driver_data *drv = priv;
 430         struct iovec iov[2] = {
 431                 {
 432                         .iov_base = &rtap_hdr,
 433                         .iov_len = sizeof(rtap_hdr),
 434                 },
 435                 {
 436                         .iov_base = (void*)data,
 437                         .iov_len = len,
 438                 }
 439         };
 440         struct msghdr msg = {
 441                 .msg_name = NULL,
 442                 .msg_namelen = 0,
 443                 .msg_iov = iov,
 444                 .msg_iovlen = 2,
 445                 .msg_control = NULL,
 446                 .msg_controllen = 0,
 447                 .msg_flags = 0,
 448         };
 449
 450         if (encrypt)
 451                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
 452
 453         return sendmsg(drv->monitor_sock, &msg, flags);
 454 }
 455
 456 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
 457                                 int flags)
 458 {
 459         struct ieee80211_mgmt *mgmt;
 460         int do_not_encrypt = 0;
 461         u16 fc;
 462
 463         mgmt = (struct ieee80211_mgmt *) data;
 464         fc = le_to_host16(mgmt->frame_control);
 465
 466         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
 467             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
 468                 /*
 469                  * Only one of the authentication frame types is encrypted.
 470                  * In order for static WEP encryption to work properly (i.e.,
 471                  * to not encrypt the frame), we need to tell mac80211 about
 472                  * the frames that must not be encrypted.
 473                  */
 474                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 475                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
 476                 if (auth_alg == WLAN_AUTH_OPEN ||
 477                     (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
 478                         do_not_encrypt = 1;
 479         }
 480
 481         return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
 482 }
 483
 484 /* Set kernel driver on given frequency (MHz) */
 485 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
 486 {
 487         struct i802_driver_data *drv = priv;
 488         struct nl_msg *msg;
 489
 490         msg = nlmsg_alloc();
 491         if (!msg)
 492                 return -1;
 493
 494         drv->last_freq = freq->freq;
 495         drv->last_freq_ht = freq->ht_enabled;
 496
 497         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 498                     NL80211_CMD_SET_WIPHY, 0);
 499
 500         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 501         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
 502         if (freq->ht_enabled) {
 503                 switch (freq->sec_channel_offset) {
 504                 case -1:
 505                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 506                                     NL80211_SEC_CHAN_BELOW);
 507                         break;
 508                 case 1:
 509                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 510                                     NL80211_SEC_CHAN_ABOVE);
 511                         break;
 512                 default:
 513                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 514                                     NL80211_SEC_CHAN_DISABLED);
 515                         break;
 516                 }
 517         }
 518
 519         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 520                 return 0;
 521  nla_put_failure:
 522         return -1;
 523 }
 524
 525
 526 static int i802_set_rts(void *priv, int rts)
 527 {
 528         struct i802_driver_data *drv = priv;
 529         struct iwreq iwr;
 530
 531         memset(&iwr, 0, sizeof(iwr));
 532         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 533         iwr.u.rts.value = rts;
 534         iwr.u.rts.fixed = 1;
 535
 536         if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
 537                 perror("ioctl[SIOCSIWRTS]");
 538                 return -1;
 539         }
 540
 541         return 0;
 542 }
 543
 544
 545 static int i802_get_rts(void *priv, int *rts)
 546 {
 547         struct i802_driver_data *drv = priv;
 548         struct iwreq iwr;
 549
 550         memset(&iwr, 0, sizeof(iwr));
 551         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 552
 553         if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
 554                 perror("ioctl[SIOCGIWRTS]");
 555                 return -1;
 556         }
 557
 558         *rts = iwr.u.rts.value;
 559
 560         return 0;
 561 }
 562
 563
 564 static int i802_set_frag(void *priv, int frag)
 565 {
 566         struct i802_driver_data *drv = priv;
 567         struct iwreq iwr;
 568
 569         memset(&iwr, 0, sizeof(iwr));
 570         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 571         iwr.u.frag.value = frag;
 572         iwr.u.frag.fixed = 1;
 573
 574         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 575                 perror("ioctl[SIOCSIWFRAG]");
 576                 return -1;
 577         }
 578
 579         return 0;
 580 }
 581
 582
 583 static int i802_get_frag(void *priv, int *frag)
 584 {
 585         struct i802_driver_data *drv = priv;
 586         struct iwreq iwr;
 587
 588         memset(&iwr, 0, sizeof(iwr));
 589         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 590
 591         if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
 592                 perror("ioctl[SIOCGIWFRAG]");
 593                 return -1;
 594         }
 595
 596         *frag = iwr.u.frag.value;
 597
 598         return 0;
 599 }
 600
 601
 602 static int i802_set_retry(void *priv, int short_retry, int long_retry)
 603 {
 604         struct i802_driver_data *drv = priv;
 605         struct iwreq iwr;
 606
 607         memset(&iwr, 0, sizeof(iwr));
 608         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 609
 610         iwr.u.retry.value = short_retry;
 611         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 612         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 613                 perror("ioctl[SIOCSIWRETRY(short)]");
 614                 return -1;
 615         }
 616
 617         iwr.u.retry.value = long_retry;
 618         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 619         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 620                 perror("ioctl[SIOCSIWRETRY(long)]");
 621                 return -1;
 622         }
 623
 624         return 0;
 625 }
 626
 627
 628 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
 629 {
 630         struct i802_driver_data *drv = priv;
 631         struct iwreq iwr;
 632
 633         memset(&iwr, 0, sizeof(iwr));
 634         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 635
 636         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 637         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 638                 perror("ioctl[SIOCGIWFRAG(short)]");
 639                 return -1;
 640         }
 641         *short_retry = iwr.u.retry.value;
 642
 643         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 644         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 645                 perror("ioctl[SIOCGIWFRAG(long)]");
 646                 return -1;
 647         }
 648         *long_retry = iwr.u.retry.value;
 649
 650         return 0;
 651 }
 652
 653
 654 static int i802_flush(void *priv)
 655 {
 656         struct i802_driver_data *drv = priv;
 657         struct nl_msg *msg;
 658
 659         msg = nlmsg_alloc();
 660         if (!msg)
 661                 return -1;
 662
 663         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 664                     0, NL80211_CMD_DEL_STATION, 0);
 665
 666         /*
 667          * XXX: FIX! this needs to flush all VLANs too
 668          */
 669         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 670                     if_nametoindex(drv->iface));
 671
 672         return send_and_recv_msgs(drv, msg, NULL, NULL);
 673  nla_put_failure:
 674         return -ENOBUFS;
 675 }
 676
 677
 678 static int get_sta_handler(struct nl_msg *msg, void *arg)
 679 {
 680         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 681         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 682         struct hostap_sta_driver_data *data = arg;
 683         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
 684         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
 685                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
 686                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
 687                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
 688         };
 689
 690         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 691                   genlmsg_attrlen(gnlh, 0), NULL);
 692
 693         /*
 694          * TODO: validate the interface and mac address!
 695          * Otherwise, there's a race condition as soon as
 696          * the kernel starts sending station notifications.
 697          */
 698
 699         if (!tb[NL80211_ATTR_STA_INFO]) {
 700                 wpa_printf(MSG_DEBUG, "sta stats missing!");
 701                 return NL_SKIP;
 702         }
 703         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
 704                              tb[NL80211_ATTR_STA_INFO],
 705                              stats_policy)) {
 706                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
 707                 return NL_SKIP;
 708         }
 709
 710         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
 711                 data->inactive_msec =
 712                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
 713         if (stats[NL80211_STA_INFO_RX_BYTES])
 714                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
 715         if (stats[NL80211_STA_INFO_TX_BYTES])
 716                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
 717
 718         return NL_SKIP;
 719 }
 720
 721 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
 722                               const u8 *addr)
 723 {
 724         struct i802_driver_data *drv = priv;
 725         struct nl_msg *msg;
 726
 727         msg = nlmsg_alloc();
 728         if (!msg)
 729                 return -ENOMEM;
 730
 731         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 732                     0, NL80211_CMD_GET_STATION, 0);
 733
 734         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 735         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 736
 737         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
 738  nla_put_failure:
 739         return -ENOBUFS;
 740 }
 741
 742
 743 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
 744                            size_t data_len, int encrypt, const u8 *own_addr)
 745 {
 746         struct i802_driver_data *drv = priv;
 747         struct ieee80211_hdr *hdr;
 748         size_t len;
 749         u8 *pos;
 750         int res;
 751 #if 0 /* FIX */
 752         int qos = sta->flags & WLAN_STA_WME;
 753 #else
 754         int qos = 0;
 755 #endif
 756
 757         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
 758                 data_len;
 759         hdr = os_zalloc(len);
 760         if (hdr == NULL) {
 761                 printf("malloc() failed for i802_send_data(len=%lu)\n",
 762                        (unsigned long) len);
 763                 return -1;
 764         }
 765
 766         hdr->frame_control =
 767                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
 768         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
 769         if (encrypt)
 770                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 771 #if 0 /* To be enabled if qos determination is added above */
 772         if (qos) {
 773                 hdr->frame_control |=
 774                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
 775         }
 776 #endif
 777
 778         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
 779         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 780         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 781         pos = (u8 *) (hdr + 1);
 782
 783 #if 0 /* To be enabled if qos determination is added above */
 784         if (qos) {
 785                 /* add an empty QoS header if needed */
 786                 pos[0] = 0;
 787                 pos[1] = 0;
 788                 pos += 2;
 789         }
 790 #endif
 791
 792         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
 793         pos += sizeof(rfc1042_header);
 794         WPA_PUT_BE16(pos, ETH_P_PAE);
 795         pos += 2;
 796         memcpy(pos, data, data_len);
 797
 798         res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
 799         free(hdr);
 800
 801         if (res < 0) {
 802                 perror("i802_send_eapol: send");
 803                 printf("i802_send_eapol - packet len: %lu - failed\n",
 804                        (unsigned long) len);
 805         }
 806
 807         return res;
 808 }
 809
 810
 811 static int i802_sta_add2(const char *ifname, void *priv,
 812                          struct hostapd_sta_add_params *params)
 813 {
 814         struct i802_driver_data *drv = priv;
 815         struct nl_msg *msg;
 816         int ret = -ENOBUFS;
 817
 818         msg = nlmsg_alloc();
 819         if (!msg)
 820                 return -ENOMEM;
 821
 822         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 823                     0, NL80211_CMD_NEW_STATION, 0);
 824
 825         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 826                     if_nametoindex(drv->iface));
 827         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
 828         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
 829         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
 830                 params->supp_rates);
 831         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
 832                     params->listen_interval);
 833
 834 #ifdef CONFIG_IEEE80211N
 835         if (params->ht_capabilities) {
 836                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
 837                         params->ht_capabilities->length,
 838                         &params->ht_capabilities->data);
 839         }
 840 #endif /* CONFIG_IEEE80211N */
 841
 842         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 843         if (ret == -EEXIST)
 844                 ret = 0;
 845  nla_put_failure:
 846         return ret;
 847 }
 848
 849
 850 static int i802_sta_remove(void *priv, const u8 *addr)
 851 {
 852         struct i802_driver_data *drv = priv;
 853         struct nl_msg *msg;
 854         int ret;
 855
 856         msg = nlmsg_alloc();
 857         if (!msg)
 858                 return -ENOMEM;
 859
 860         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 861                     0, NL80211_CMD_DEL_STATION, 0);
 862
 863         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 864                     if_nametoindex(drv->iface));
 865         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 866
 867         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 868         if (ret == -ENOENT)
 869                 return 0;
 870         return ret;
 871  nla_put_failure:
 872         return -ENOBUFS;
 873 }
 874
 875
 876 static int i802_sta_set_flags(void *priv, const u8 *addr,
 877                               int total_flags, int flags_or, int flags_and)
 878 {
 879         struct i802_driver_data *drv = priv;
 880         struct nl_msg *msg, *flags = NULL;
 881
 882         msg = nlmsg_alloc();
 883         if (!msg)
 884                 return -ENOMEM;
 885
 886         flags = nlmsg_alloc();
 887         if (!flags) {
 888                 nlmsg_free(msg);
 889                 return -ENOMEM;
 890         }
 891
 892         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 893                     0, NL80211_CMD_SET_STATION, 0);
 894
 895         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 896                     if_nametoindex(drv->iface));
 897         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 898
 899         if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
 900                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
 901
 902         if (total_flags & WLAN_STA_WME)
 903                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
 904
 905         if (total_flags & WLAN_STA_SHORT_PREAMBLE)
 906                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
 907
 908 #ifdef NL80211_MFP_PENDING
 909         if (total_flags & WLAN_STA_MFP)
 910                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
 911 #endif /* NL80211_MFP_PENDING */
 912
 913         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
 914                 goto nla_put_failure;
 915
 916         nlmsg_free(flags);
 917
 918         return send_and_recv_msgs(drv, msg, NULL, NULL);
 919  nla_put_failure:
 920         nlmsg_free(flags);
 921         return -ENOBUFS;
 922 }
 923
 924
 925 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
 926 {
 927         return -1;
 928 }
 929
 930
 931 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 932                                     int cw_min, int cw_max, int burst_time)
 933 {
 934         struct i802_driver_data *drv = priv;
 935         struct nl_msg *msg;
 936         struct nlattr *txq, *params;
 937
 938         msg = nlmsg_alloc();
 939         if (!msg)
 940                 return -1;
 941
 942         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 943                     0, NL80211_CMD_SET_WIPHY, 0);
 944
 945         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 946
 947         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
 948         if (!txq)
 949                 goto nla_put_failure;
 950
 951         /* We are only sending parameters for a single TXQ at a time */
 952         params = nla_nest_start(msg, 1);
 953         if (!params)
 954                 goto nla_put_failure;
 955
 956         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
 957         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
 958          * 32 usec, so need to convert the value here. */
 959         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
 960         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
 961         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
 962         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
 963
 964         nla_nest_end(msg, params);
 965
 966         nla_nest_end(msg, txq);
 967
 968         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 969                 return 0;
 970  nla_put_failure:
 971         return -1;
 972 }
 973
 974
 975 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
 976 {
 977         struct nl_msg *msg;
 978
 979         /* stop listening for EAPOL on this interface */
 980         del_ifidx(drv, ifidx);
 981
 982         msg = nlmsg_alloc();
 983         if (!msg)
 984                 goto nla_put_failure;
 985
 986         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 987                     0, NL80211_CMD_DEL_INTERFACE, 0);
 988         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
 989
 990         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 991                 return;
 992  nla_put_failure:
 993         printf("Failed to remove interface.\n");
 994 }
 995
 996
 997 static int nl80211_create_iface(struct i802_driver_data *drv,
 998                                 const char *ifname,
 999                                 enum nl80211_iftype iftype,
1000                                 const u8 *addr)
1001 {
1002         struct nl_msg *msg, *flags = NULL;
1003         int ifidx;
1004         struct ifreq ifreq;
1005         struct iwreq iwr;
1006         int ret = -ENOBUFS;
1007
1008         msg = nlmsg_alloc();
1009         if (!msg)
1010                 return -1;
1011
1012         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1013                     0, NL80211_CMD_NEW_INTERFACE, 0);
1014         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1015                     if_nametoindex(drv->hapd->conf->iface));
1016         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1017         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1018
1019         if (iftype == NL80211_IFTYPE_MONITOR) {
1020                 int err;
1021
1022                 flags = nlmsg_alloc();
1023                 if (!flags)
1024                         goto nla_put_failure;
1025
1026                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1027
1028                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1029
1030                 nlmsg_free(flags);
1031
1032                 if (err)
1033                         goto nla_put_failure;
1034         }
1035
1036         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1037         if (ret) {
1038  nla_put_failure:
1039                 printf("Failed to create interface %s.\n", ifname);
1040                 return ret;
1041         }
1042
1043         ifidx = if_nametoindex(ifname);
1044
1045         if (ifidx <= 0)
1046                 return -1;
1047
1048         /* start listening for EAPOL on this interface */
1049         add_ifidx(drv, ifidx);
1050
1051         if (addr) {
1052                 switch (iftype) {
1053                 case NL80211_IFTYPE_AP:
1054                         os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1055                         memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1056                         ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1057
1058                         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1059                                 nl80211_remove_iface(drv, ifidx);
1060                                 return -1;
1061                         }
1062                         break;
1063                 case NL80211_IFTYPE_WDS:
1064                         memset(&iwr, 0, sizeof(iwr));
1065                         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1066                         iwr.u.addr.sa_family = ARPHRD_ETHER;
1067                         memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1068                         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1069                                 return -1;
1070                         break;
1071                 default:
1072                         /* nothing */
1073                         break;
1074                 }
1075         }
1076
1077         return ifidx;
1078 }
1079
1080
1081 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1082 {
1083         int ifidx;
1084
1085         /*
1086          * The kernel supports that when the low-level driver does,
1087          * but we currently don't because we need per-BSS data that
1088          * currently we can't handle easily.
1089          */
1090         return -1;
1091
1092         ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1093         if (ifidx < 0)
1094                 return -1;
1095         if (hostapd_set_iface_flags(priv, ifname, 1)) {
1096                 nl80211_remove_iface(priv, ifidx);
1097                 return -1;
1098         }
1099         return 0;
1100 }
1101
1102
1103 static int i802_bss_remove(void *priv, const char *ifname)
1104 {
1105         nl80211_remove_iface(priv, if_nametoindex(ifname));
1106         return 0;
1107 }
1108
1109
1110 static int i802_set_beacon(const char *iface, void *priv,
1111                            u8 *head, size_t head_len,
1112                            u8 *tail, size_t tail_len)
1113 {
1114         struct i802_driver_data *drv = priv;
1115         struct nl_msg *msg;
1116         u8 cmd = NL80211_CMD_NEW_BEACON;
1117         int ret;
1118
1119         msg = nlmsg_alloc();
1120         if (!msg)
1121                 return -ENOMEM;
1122
1123         if (drv->beacon_set)
1124                 cmd = NL80211_CMD_SET_BEACON;
1125
1126         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1127                     0, cmd, 0);
1128         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1129         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1130         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1131         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1132
1133         if (!drv->dtim_period)
1134                 drv->dtim_period = 2;
1135         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1136
1137         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1138         if (!ret)
1139                 drv->beacon_set = 1;
1140         return ret;
1141  nla_put_failure:
1142         return -ENOBUFS;
1143 }
1144
1145
1146 static int i802_del_beacon(struct i802_driver_data *drv)
1147 {
1148         struct nl_msg *msg;
1149
1150         msg = nlmsg_alloc();
1151         if (!msg)
1152                 return -ENOMEM;
1153
1154         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1155                     0, NL80211_CMD_DEL_BEACON, 0);
1156         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1157
1158         return send_and_recv_msgs(drv, msg, NULL, NULL);
1159  nla_put_failure:
1160         return -ENOBUFS;
1161 }
1162
1163
1164 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1165 {
1166         struct i802_driver_data *drv = priv;
1167
1168         /*
1169          * FIXME: This needs to be per interface (BSS)
1170          */
1171         drv->ieee802_1x_active = enabled;
1172         return 0;
1173 }
1174
1175
1176 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1177 {
1178         struct i802_driver_data *drv = priv;
1179         struct iwreq iwr;
1180
1181         memset(&iwr, 0, sizeof(iwr));
1182
1183         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1184         iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1185         iwr.u.param.value = enabled;
1186
1187         ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1188
1189         /* ignore errors, the kernel/driver might not care */
1190         return 0;
1191 }
1192
1193
1194 static int i802_set_internal_bridge(void *priv, int value)
1195 {
1196         return -1;
1197 }
1198
1199
1200 static int i802_set_beacon_int(void *priv, int value)
1201 {
1202         struct i802_driver_data *drv = priv;
1203         struct nl_msg *msg;
1204
1205         drv->beacon_int = value;
1206
1207         if (!drv->beacon_set)
1208                 return 0;
1209
1210         msg = nlmsg_alloc();
1211         if (!msg)
1212                 return -ENOMEM;
1213
1214         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1215                     0, NL80211_CMD_SET_BEACON, 0);
1216         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1217
1218         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1219
1220         return send_and_recv_msgs(drv, msg, NULL, NULL);
1221  nla_put_failure:
1222         return -ENOBUFS;
1223 }
1224
1225
1226 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1227 {
1228         struct i802_driver_data *drv = priv;
1229         struct nl_msg *msg;
1230
1231         msg = nlmsg_alloc();
1232         if (!msg)
1233                 return -ENOMEM;
1234
1235         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1236                     0, NL80211_CMD_SET_BEACON, 0);
1237         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1238
1239         drv->dtim_period = value;
1240         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1241
1242         return send_and_recv_msgs(drv, msg, NULL, NULL);
1243  nla_put_failure:
1244         return -ENOBUFS;
1245 }
1246
1247
1248 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1249 {
1250         struct i802_driver_data *drv = priv;
1251         struct nl_msg *msg;
1252
1253         msg = nlmsg_alloc();
1254         if (!msg)
1255                 return -ENOMEM;
1256
1257         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1258                     NL80211_CMD_SET_BSS, 0);
1259
1260         if (cts >= 0)
1261                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1262         if (preamble >= 0)
1263                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1264         if (slot >= 0)
1265                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1266
1267         /* TODO: multi-BSS support */
1268         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1269
1270         return send_and_recv_msgs(drv, msg, NULL, NULL);
1271  nla_put_failure:
1272         return -ENOBUFS;
1273 }
1274
1275
1276 static int i802_set_cts_protect(void *priv, int value)
1277 {
1278         return i802_set_bss(priv, value, -1, -1);
1279 }
1280
1281
1282 static int i802_set_preamble(void *priv, int value)
1283 {
1284         return i802_set_bss(priv, -1, value, -1);
1285 }
1286
1287
1288 static int i802_set_short_slot_time(void *priv, int value)
1289 {
1290         return i802_set_bss(priv, -1, -1, value);
1291 }
1292
1293
1294 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1295 {
1296         switch (type) {
1297         case HOSTAPD_IF_VLAN:
1298                 return NL80211_IFTYPE_AP_VLAN;
1299         case HOSTAPD_IF_WDS:
1300                 return NL80211_IFTYPE_WDS;
1301         }
1302         return -1;
1303 }
1304
1305
1306 static int i802_if_add(const char *iface, void *priv,
1307                        enum hostapd_driver_if_type type, char *ifname,
1308                        const u8 *addr)
1309 {
1310         if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1311                 return -1;
1312         return 0;
1313 }
1314
1315
1316 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1317                           char *ifname, const u8 *addr)
1318 {
1319         /* unused at the moment */
1320         return -1;
1321 }
1322
1323
1324 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1325                           const char *ifname, const u8 *addr)
1326 {
1327         nl80211_remove_iface(priv, if_nametoindex(ifname));
1328         return 0;
1329 }
1330
1331
1332 struct phy_info_arg {
1333         u16 *num_modes;
1334         struct hostapd_hw_modes *modes;
1335 };
1336
1337 static int phy_info_handler(struct nl_msg *msg, void *arg)
1338 {
1339         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1340         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1341         struct phy_info_arg *phy_info = arg;
1342
1343         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1344
1345         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1346         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1347                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1348                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1349                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1350                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1351                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1352                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1353         };
1354
1355         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1356         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1357                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1358                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1359         };
1360
1361         struct nlattr *nl_band;
1362         struct nlattr *nl_freq;
1363         struct nlattr *nl_rate;
1364         int rem_band, rem_freq, rem_rate;
1365         struct hostapd_hw_modes *mode;
1366         int idx, mode_is_set;
1367
1368         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1369                   genlmsg_attrlen(gnlh, 0), NULL);
1370
1371         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1372                 return NL_SKIP;
1373
1374         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1375                 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1376                 if (!mode)
1377                         return NL_SKIP;
1378                 phy_info->modes = mode;
1379
1380                 mode_is_set = 0;
1381
1382                 mode = &phy_info->modes[*(phy_info->num_modes)];
1383                 memset(mode, 0, sizeof(*mode));
1384                 *(phy_info->num_modes) += 1;
1385
1386                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1387                           nla_len(nl_band), NULL);
1388
1389                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1390                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1391                                   nla_len(nl_freq), freq_policy);
1392                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1393                                 continue;
1394                         mode->num_channels++;
1395                 }
1396
1397                 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1398                 if (!mode->channels)
1399                         return NL_SKIP;
1400
1401                 idx = 0;
1402
1403                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1404                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1405                                   nla_len(nl_freq), freq_policy);
1406                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1407                                 continue;
1408
1409                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1410                         mode->channels[idx].flag = 0;
1411
1412                         if (!mode_is_set) {
1413                                 /* crude heuristic */
1414                                 if (mode->channels[idx].freq < 4000)
1415                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
1416                                 else
1417                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
1418                                 mode_is_set = 1;
1419                         }
1420
1421                         /* crude heuristic */
1422                         if (mode->channels[idx].freq < 4000)
1423                                 if (mode->channels[idx].freq == 2848)
1424                                         mode->channels[idx].chan = 14;
1425                                 else
1426                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1427                         else
1428                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1429
1430                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1431                                 mode->channels[idx].flag |=
1432                                         HOSTAPD_CHAN_DISABLED;
1433                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1434                                 mode->channels[idx].flag |=
1435                                         HOSTAPD_CHAN_PASSIVE_SCAN;
1436                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1437                                 mode->channels[idx].flag |=
1438                                         HOSTAPD_CHAN_NO_IBSS;
1439                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1440                                 mode->channels[idx].flag |=
1441                                         HOSTAPD_CHAN_RADAR;
1442
1443                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1444                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1445                                 mode->channels[idx].max_tx_power =
1446                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1447
1448                         idx++;
1449                 }
1450
1451                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1452                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1453                                   nla_len(nl_rate), rate_policy);
1454                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1455                                 continue;
1456                         mode->num_rates++;
1457                 }
1458
1459                 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1460                 if (!mode->rates)
1461                         return NL_SKIP;
1462
1463                 idx = 0;
1464
1465                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1466                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1467                                   nla_len(nl_rate), rate_policy);
1468                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1469                                 continue;
1470                         mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1471
1472                         /* crude heuristic */
1473                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1474                             mode->rates[idx].rate > 200)
1475                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
1476
1477                         if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1478                                 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1479
1480                         idx++;
1481                 }
1482         }
1483
1484         return NL_SKIP;
1485 }
1486
1487 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1488                                              u16 *num_modes)
1489 {
1490         u16 m;
1491         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1492         int i, mode11g_idx = -1;
1493
1494         /* If only 802.11g mode is included, use it to construct matching
1495          * 802.11b mode data. */
1496
1497         for (m = 0; m < *num_modes; m++) {
1498                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1499                         return modes; /* 802.11b already included */
1500                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1501                         mode11g_idx = m;
1502         }
1503
1504         if (mode11g_idx < 0)
1505                 return modes; /* 2.4 GHz band not supported at all */
1506
1507         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1508         if (nmodes == NULL)
1509                 return modes; /* Could not add 802.11b mode */
1510
1511         mode = &nmodes[*num_modes];
1512         os_memset(mode, 0, sizeof(*mode));
1513         (*num_modes)++;
1514         modes = nmodes;
1515
1516         mode->mode = HOSTAPD_MODE_IEEE80211B;
1517
1518         mode11g = &modes[mode11g_idx];
1519         mode->num_channels = mode11g->num_channels;
1520         mode->channels = os_malloc(mode11g->num_channels *
1521                                    sizeof(struct hostapd_channel_data));
1522         if (mode->channels == NULL) {
1523                 (*num_modes)--;
1524                 return modes; /* Could not add 802.11b mode */
1525         }
1526         os_memcpy(mode->channels, mode11g->channels,
1527                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1528
1529         mode->num_rates = 0;
1530         mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1531         if (mode->rates == NULL) {
1532                 os_free(mode->channels);
1533                 (*num_modes)--;
1534                 return modes; /* Could not add 802.11b mode */
1535         }
1536
1537         for (i = 0; i < mode11g->num_rates; i++) {
1538                 if (mode11g->rates[i].rate > 110 ||
1539                     mode11g->rates[i].flags &
1540                     (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1541                         continue;
1542                 mode->rates[mode->num_rates] = mode11g->rates[i];
1543                 mode->num_rates++;
1544                 if (mode->num_rates == 4)
1545                         break;
1546         }
1547
1548         if (mode->num_rates == 0) {
1549                 os_free(mode->channels);
1550                 os_free(mode->rates);
1551                 (*num_modes)--;
1552                 return modes; /* No 802.11b rates */
1553         }
1554
1555         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1556                    "information");
1557
1558         return modes;
1559 }
1560
1561 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1562                                                          u16 *num_modes,
1563                                                          u16 *flags)
1564 {
1565         struct i802_driver_data *drv = priv;
1566         struct nl_msg *msg;
1567         struct phy_info_arg result = {
1568                 .num_modes = num_modes,
1569                 .modes = NULL,
1570         };
1571
1572         *num_modes = 0;
1573         *flags = 0;
1574
1575         msg = nlmsg_alloc();
1576         if (!msg)
1577                 return NULL;
1578
1579         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1580                     0, NL80211_CMD_GET_WIPHY, 0);
1581
1582         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1583
1584         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1585                 return i802_add_11b(result.modes, num_modes);
1586  nla_put_failure:
1587         return NULL;
1588 }
1589
1590
1591 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1592                              const char *ifname, int vlan_id)
1593 {
1594         struct i802_driver_data *drv = priv;
1595         struct nl_msg *msg;
1596
1597         msg = nlmsg_alloc();
1598         if (!msg)
1599                 return -ENOMEM;
1600
1601         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1602                     0, NL80211_CMD_SET_STATION, 0);
1603
1604         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1605                     if_nametoindex(drv->iface));
1606         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1607         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1608                     if_nametoindex(ifname));
1609
1610         return send_and_recv_msgs(drv, msg, NULL, NULL);
1611  nla_put_failure:
1612         return -ENOBUFS;
1613 }
1614
1615
1616 static int i802_set_country(void *priv, const char *country)
1617 {
1618         struct i802_driver_data *drv = priv;
1619         struct nl_msg *msg;
1620         char alpha2[3];
1621
1622         msg = nlmsg_alloc();
1623         if (!msg)
1624                 return -ENOMEM;
1625
1626         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1627                     0, NL80211_CMD_REQ_SET_REG, 0);
1628
1629         alpha2[0] = country[0];
1630         alpha2[1] = country[1];
1631         alpha2[2] = '\0';
1632         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1633
1634         return send_and_recv_msgs(drv, msg, NULL, NULL);
1635  nla_put_failure:
1636         return -ENOBUFS;
1637 }
1638
1639
1640 static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
1641 {
1642         struct sta_info *sta;
1643
1644         sta = ap_get_sta(hapd, ta);
1645         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1646                 printf("Data/PS-poll frame from not associated STA "
1647                        MACSTR "\n", MAC2STR(ta));
1648                 if (sta && (sta->flags & WLAN_STA_AUTH))
1649                         hostapd_sta_disassoc(
1650                                 hapd, ta,
1651                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1652                 else
1653                         hostapd_sta_deauth(
1654                                 hapd, ta,
1655                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1656         }
1657 }
1658
1659
1660 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1661                                int ok)
1662 {
1663         struct ieee80211_hdr *hdr;
1664         u16 fc, type, stype;
1665         struct sta_info *sta;
1666
1667         hdr = (struct ieee80211_hdr *) buf;
1668         fc = le_to_host16(hdr->frame_control);
1669
1670         type = WLAN_FC_GET_TYPE(fc);
1671         stype = WLAN_FC_GET_STYPE(fc);
1672
1673         switch (type) {
1674         case WLAN_FC_TYPE_MGMT:
1675                 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1676                            ok ? "ACK" : "fail");
1677                 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1678                 break;
1679         case WLAN_FC_TYPE_CTRL:
1680                 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1681                            ok ? "ACK" : "fail");
1682                 break;
1683         case WLAN_FC_TYPE_DATA:
1684                 wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
1685                            ok ? "ACK" : "fail");
1686                 sta = ap_get_sta(hapd, hdr->addr1);
1687                 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1688                         wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1689                                    "activity poll", MAC2STR(sta->addr),
1690                                    ok ? "ACKed" : "did not ACK");
1691                         if (ok)
1692                                 sta->flags &= ~WLAN_STA_PENDING_POLL;
1693                 }
1694                 if (sta)
1695                         ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1696                 break;
1697         default:
1698                 printf("unknown TX callback frame type %d\n", type);
1699                 break;
1700         }
1701 }
1702
1703
1704 static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
1705                          struct hostapd_frame_info *hfi,
1706                          enum ieee80211_msg_type msg_type)
1707 {
1708         struct ieee80211_hdr *hdr;
1709         u16 fc, type, stype;
1710         size_t data_len = len;
1711         struct hostapd_data *hapd = NULL;
1712         int broadcast_bssid = 0;
1713         size_t i;
1714         u8 *bssid;
1715
1716         /*
1717          * PS-Poll frames are 16 bytes. All other frames are
1718          * 24 bytes or longer.
1719          */
1720         if (len < 16)
1721                 return;
1722
1723         hdr = (struct ieee80211_hdr *) buf;
1724         fc = le_to_host16(hdr->frame_control);
1725
1726         type = WLAN_FC_GET_TYPE(fc);
1727         stype = WLAN_FC_GET_STYPE(fc);
1728
1729         switch (type) {
1730         case WLAN_FC_TYPE_DATA:
1731                 if (len < 24)
1732                         return;
1733                 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1734                 case WLAN_FC_TODS:
1735                         bssid = hdr->addr1;
1736                         break;
1737                 default:
1738                         /* discard */
1739                         return;
1740                 }
1741                 break;
1742         case WLAN_FC_TYPE_CTRL:
1743                 /* discard non-ps-poll frames */
1744                 if (stype != WLAN_FC_STYPE_PSPOLL)
1745                         return;
1746                 bssid = hdr->addr1;
1747                 break;
1748         case WLAN_FC_TYPE_MGMT:
1749                 bssid = hdr->addr3;
1750                 break;
1751         default:
1752                 /* discard */
1753                 return;
1754         }
1755
1756         /* find interface frame belongs to */
1757         for (i = 0; i < iface->num_bss; i++) {
1758                 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1759                         hapd = iface->bss[i];
1760                         break;
1761                 }
1762         }
1763
1764         if (hapd == NULL) {
1765                 hapd = iface->bss[0];
1766
1767                 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1768                     bssid[2] != 0xff || bssid[3] != 0xff ||
1769                     bssid[4] != 0xff || bssid[5] != 0xff) {
1770                         /*
1771                          * Unknown BSSID - drop frame if this is not from
1772                          * passive scanning or a beacon (at least ProbeReq
1773                          * frames to other APs may be allowed through RX
1774                          * filtering in the wlan hw/driver)
1775                          */
1776                         if ((type != WLAN_FC_TYPE_MGMT ||
1777                              stype != WLAN_FC_STYPE_BEACON))
1778                                 return;
1779                 } else
1780                         broadcast_bssid = 1;
1781         }
1782
1783         switch (msg_type) {
1784         case ieee80211_msg_normal:
1785                 /* continue processing */
1786                 break;
1787         case ieee80211_msg_tx_callback_ack:
1788                 handle_tx_callback(hapd, buf, data_len, 1);
1789                 return;
1790         case ieee80211_msg_tx_callback_fail:
1791                 handle_tx_callback(hapd, buf, data_len, 0);
1792                 return;
1793         }
1794
1795         switch (type) {
1796         case WLAN_FC_TYPE_MGMT:
1797                 if (stype != WLAN_FC_STYPE_BEACON &&
1798                     stype != WLAN_FC_STYPE_PROBE_REQ)
1799                         wpa_printf(MSG_MSGDUMP, "MGMT");
1800                 if (broadcast_bssid) {
1801                         for (i = 0; i < iface->num_bss; i++)
1802                                 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1803                                                 stype, hfi);
1804                 } else
1805                         ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1806                 break;
1807         case WLAN_FC_TYPE_CTRL:
1808                 /* can only get here with PS-Poll frames */
1809                 wpa_printf(MSG_DEBUG, "CTRL");
1810                 handle_unknown_sta(hapd, hdr->addr2);
1811                 break;
1812         case WLAN_FC_TYPE_DATA:
1813                 handle_unknown_sta(hapd, hdr->addr2);
1814                 break;
1815         }
1816 }
1817
1818
1819 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1820 {
1821         struct i802_driver_data *drv = eloop_ctx;
1822         struct hostapd_data *hapd = drv->hapd;
1823         struct sockaddr_ll lladdr;
1824         unsigned char buf[3000];
1825         int len;
1826         socklen_t fromlen = sizeof(lladdr);
1827
1828         len = recvfrom(sock, buf, sizeof(buf), 0,
1829                        (struct sockaddr *)&lladdr, &fromlen);
1830         if (len < 0) {
1831                 perror("recv");
1832                 return;
1833         }
1834
1835         if (have_ifidx(drv, lladdr.sll_ifindex))
1836                 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1837 }
1838
1839
1840 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1841 {
1842         struct i802_driver_data *drv = eloop_ctx;
1843         int len;
1844         unsigned char buf[3000];
1845         struct hostapd_data *hapd = drv->hapd;
1846         struct ieee80211_radiotap_iterator iter;
1847         int ret;
1848         struct hostapd_frame_info hfi;
1849         int injected = 0, failed = 0, msg_type, rxflags = 0;
1850
1851         len = recv(sock, buf, sizeof(buf), 0);
1852         if (len < 0) {
1853                 perror("recv");
1854                 return;
1855         }
1856
1857         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1858                 printf("received invalid radiotap frame\n");
1859                 return;
1860         }
1861
1862         memset(&hfi, 0, sizeof(hfi));
1863
1864         while (1) {
1865                 ret = ieee80211_radiotap_iterator_next(&iter);
1866                 if (ret == -ENOENT)
1867                         break;
1868                 if (ret) {
1869                         printf("received invalid radiotap frame (%d)\n", ret);
1870                         return;
1871                 }
1872                 switch (iter.this_arg_index) {
1873                 case IEEE80211_RADIOTAP_FLAGS:
1874                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1875                                 len -= 4;
1876                         break;
1877                 case IEEE80211_RADIOTAP_RX_FLAGS:
1878                         rxflags = 1;
1879                         break;
1880                 case IEEE80211_RADIOTAP_TX_FLAGS:
1881                         injected = 1;
1882                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1883                                         IEEE80211_RADIOTAP_F_TX_FAIL;
1884                         break;
1885                 case IEEE80211_RADIOTAP_DATA_RETRIES:
1886                         break;
1887                 case IEEE80211_RADIOTAP_CHANNEL:
1888                         /* TODO convert from freq/flags to channel number
1889                         hfi.channel = XXX;
1890                         hfi.phytype = XXX;
1891                          */
1892                         break;
1893                 case IEEE80211_RADIOTAP_RATE:
1894                         hfi.datarate = *iter.this_arg * 5;
1895                         break;
1896                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1897                         hfi.ssi_signal = *iter.this_arg;
1898                         break;
1899                 }
1900         }
1901
1902         if (rxflags && injected)
1903                 return;
1904
1905         if (!injected)
1906                 msg_type = ieee80211_msg_normal;
1907         else if (failed)
1908                 msg_type = ieee80211_msg_tx_callback_fail;
1909         else
1910                 msg_type = ieee80211_msg_tx_callback_ack;
1911
1912         handle_frame(hapd->iface, buf + iter.max_length,
1913                      len - iter.max_length, &hfi, msg_type);
1914 }
1915
1916
1917 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
1918 {
1919         char buf[IFNAMSIZ];
1920         struct sockaddr_ll ll;
1921         int optval;
1922         socklen_t optlen;
1923
1924         snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
1925         buf[IFNAMSIZ - 1] = '\0';
1926
1927         drv->monitor_ifidx =
1928                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
1929
1930         if (drv->monitor_ifidx < 0)
1931                 return -1;
1932
1933         if (hostapd_set_iface_flags(drv, buf, 1))
1934                 goto error;
1935
1936         memset(&ll, 0, sizeof(ll));
1937         ll.sll_family = AF_PACKET;
1938         ll.sll_ifindex = drv->monitor_ifidx;
1939         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
1940         if (drv->monitor_sock < 0) {
1941                 perror("socket[PF_PACKET,SOCK_RAW]");
1942                 goto error;
1943         }
1944
1945         if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
1946                  sizeof(ll)) < 0) {
1947                 perror("monitor socket bind");
1948                 goto error;
1949         }
1950
1951         optlen = sizeof(optval);
1952         optval = 20;
1953         if (setsockopt
1954             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
1955                 perror("Failed to set socket priority");
1956                 goto error;
1957         }
1958
1959         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
1960                                      drv, NULL)) {
1961                 printf("Could not register monitor read socket\n");
1962                 goto error;
1963         }
1964
1965         return 0;
1966  error:
1967         nl80211_remove_iface(drv, drv->monitor_ifidx);
1968         return -1;
1969 }
1970
1971
1972 static int nl80211_set_master_mode(struct i802_driver_data *drv,
1973                                    const char *ifname)
1974 {
1975         struct nl_msg *msg;
1976         int ret = -ENOBUFS;
1977
1978         msg = nlmsg_alloc();
1979         if (!msg)
1980                 return -ENOMEM;
1981
1982         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1983                     0, NL80211_CMD_SET_INTERFACE, 0);
1984         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1985                     if_nametoindex(ifname));
1986         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
1987
1988         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1989         if (!ret)
1990                 return 0;
1991  nla_put_failure:
1992         wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
1993                    "mode.", ifname);
1994         return ret;
1995 }
1996
1997
1998 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
1999 {
2000         struct ifreq ifr;
2001         struct sockaddr_ll addr;
2002
2003         drv->ioctl_sock = -1;
2004
2005         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2006         if (drv->ioctl_sock < 0) {
2007                 perror("socket[PF_INET,SOCK_DGRAM]");
2008                 return -1;
2009         }
2010
2011         /* start listening for EAPOL on the default AP interface */
2012         add_ifidx(drv, if_nametoindex(drv->iface));
2013
2014         if (hostapd_set_iface_flags(drv, drv->iface, 0))
2015                 return -1;
2016
2017         if (bssid) {
2018                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2019                 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2020                 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2021
2022                 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2023                         perror("ioctl(SIOCSIFHWADDR)");
2024                         return -1;
2025                 }
2026         }
2027
2028         /*
2029          * initialise generic netlink and nl80211
2030          */
2031         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2032         if (!drv->nl_cb) {
2033                 printf("Failed to allocate netlink callbacks.\n");
2034                 return -1;
2035         }
2036
2037         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2038         if (!drv->nl_handle) {
2039                 printf("Failed to allocate netlink handle.\n");
2040                 return -1;
2041         }
2042
2043         if (genl_connect(drv->nl_handle)) {
2044                 printf("Failed to connect to generic netlink.\n");
2045                 return -1;
2046         }
2047
2048 #ifdef CONFIG_LIBNL20
2049         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
2050                 printf("Failed to allocate generic netlink cache.\n");
2051                 return -1;
2052         }
2053 #else /* CONFIG_LIBNL20 */
2054         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2055         if (!drv->nl_cache) {
2056                 printf("Failed to allocate generic netlink cache.\n");
2057                 return -1;
2058         }
2059 #endif /* CONFIG_LIBNL20 */
2060
2061         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2062         if (!drv->nl80211) {
2063                 printf("nl80211 not found.\n");
2064                 return -1;
2065         }
2066
2067         /* Initialise a monitor interface */
2068         if (nl80211_create_monitor_interface(drv))
2069                 return -1;
2070
2071         if (nl80211_set_master_mode(drv, drv->iface))
2072                 goto fail1;
2073
2074         if (hostapd_set_iface_flags(drv, drv->iface, 1))
2075                 goto fail1;
2076
2077         memset(&addr, 0, sizeof(addr));
2078         addr.sll_family = AF_PACKET;
2079         addr.sll_ifindex = ifr.ifr_ifindex;
2080         wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2081                    addr.sll_ifindex);
2082
2083         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2084         if (drv->eapol_sock < 0) {
2085                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2086                 goto fail1;
2087         }
2088
2089         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2090         {
2091                 printf("Could not register read socket for eapol\n");
2092                 return -1;
2093         }
2094
2095         memset(&ifr, 0, sizeof(ifr));
2096         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2097         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2098                 perror("ioctl(SIOCGIFHWADDR)");
2099                 goto fail1;
2100         }
2101
2102         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2103                 printf("Invalid HW-addr family 0x%04x\n",
2104                        ifr.ifr_hwaddr.sa_family);
2105                 goto fail1;
2106         }
2107         memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2108
2109         return 0;
2110
2111 fail1:
2112         nl80211_remove_iface(drv, drv->monitor_ifidx);
2113         return -1;
2114 }
2115
2116
2117 static int i802_get_inact_sec(void *priv, const u8 *addr)
2118 {
2119         struct hostap_sta_driver_data data;
2120         int ret;
2121
2122         data.inactive_msec = (unsigned long) -1;
2123         ret = i802_read_sta_data(priv, &data, addr);
2124         if (ret || data.inactive_msec == (unsigned long) -1)
2125                 return -1;
2126         return data.inactive_msec / 1000;
2127 }
2128
2129
2130 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2131 {
2132 #if 0
2133         /* TODO */
2134 #endif
2135         return 0;
2136 }
2137
2138
2139 static void
2140 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2141                                        char *custom)
2142 {
2143         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2144
2145         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2146                 char *pos;
2147                 u8 addr[ETH_ALEN];
2148                 pos = strstr(custom, "addr=");
2149                 if (pos == NULL) {
2150                         wpa_printf(MSG_DEBUG,
2151                                    "MLME-MICHAELMICFAILURE.indication "
2152                                    "without sender address ignored");
2153                         return;
2154                 }
2155                 pos += 5;
2156                 if (hwaddr_aton(pos, addr) == 0) {
2157                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2158                 } else {
2159                         wpa_printf(MSG_DEBUG,
2160                                    "MLME-MICHAELMICFAILURE.indication "
2161                                    "with invalid MAC address");
2162                 }
2163         }
2164 }
2165
2166
2167 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2168                                             char *data, int len)
2169 {
2170         struct iw_event iwe_buf, *iwe = &iwe_buf;
2171         char *pos, *end, *custom, *buf;
2172
2173         pos = data;
2174         end = data + len;
2175
2176         while (pos + IW_EV_LCP_LEN <= end) {
2177                 /* Event data may be unaligned, so make a local, aligned copy
2178                  * before processing. */
2179                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2180                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2181                            iwe->cmd, iwe->len);
2182                 if (iwe->len <= IW_EV_LCP_LEN)
2183                         return;
2184
2185                 custom = pos + IW_EV_POINT_LEN;
2186                 if (drv->we_version > 18 &&
2187                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
2188                      iwe->cmd == IWEVCUSTOM)) {
2189                         /* WE-19 removed the pointer from struct iw_point */
2190                         char *dpos = (char *) &iwe_buf.u.data.length;
2191                         int dlen = dpos - (char *) &iwe_buf;
2192                         memcpy(dpos, pos + IW_EV_LCP_LEN,
2193                                sizeof(struct iw_event) - dlen);
2194                 } else {
2195                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2196                         custom += IW_EV_POINT_OFF;
2197                 }
2198
2199                 switch (iwe->cmd) {
2200                 case IWEVCUSTOM:
2201                         if (custom + iwe->u.data.length > end)
2202                                 return;
2203                         buf = malloc(iwe->u.data.length + 1);
2204                         if (buf == NULL)
2205                                 return;
2206                         memcpy(buf, custom, iwe->u.data.length);
2207                         buf[iwe->u.data.length] = '\0';
2208                         hostapd_wireless_event_wireless_custom(drv, buf);
2209                         free(buf);
2210                         break;
2211                 }
2212
2213                 pos += iwe->len;
2214         }
2215 }
2216
2217
2218 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2219                                                struct nlmsghdr *h, int len)
2220 {
2221         struct ifinfomsg *ifi;
2222         int attrlen, nlmsg_len, rta_len;
2223         struct rtattr *attr;
2224
2225         if (len < (int) sizeof(*ifi))
2226                 return;
2227
2228         ifi = NLMSG_DATA(h);
2229
2230         /* TODO: use ifi->ifi_index to filter out wireless events from other
2231          * interfaces */
2232
2233         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2234
2235         attrlen = h->nlmsg_len - nlmsg_len;
2236         if (attrlen < 0)
2237                 return;
2238
2239         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
2240
2241         rta_len = RTA_ALIGN(sizeof(struct rtattr));
2242         while (RTA_OK(attr, attrlen)) {
2243                 if (attr->rta_type == IFLA_WIRELESS) {
2244                         hostapd_wireless_event_wireless(
2245                                 drv, ((char *) attr) + rta_len,
2246                                 attr->rta_len - rta_len);
2247                 }
2248                 attr = RTA_NEXT(attr, attrlen);
2249         }
2250 }
2251
2252
2253 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2254                                            void *sock_ctx)
2255 {
2256         char buf[256];
2257         int left;
2258         struct sockaddr_nl from;
2259         socklen_t fromlen;
2260         struct nlmsghdr *h;
2261         struct i802_driver_data *drv = eloop_ctx;
2262
2263         fromlen = sizeof(from);
2264         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2265                         (struct sockaddr *) &from, &fromlen);
2266         if (left < 0) {
2267                 if (errno != EINTR && errno != EAGAIN)
2268                         perror("recvfrom(netlink)");
2269                 return;
2270         }
2271
2272         h = (struct nlmsghdr *) buf;
2273         while (left >= (int) sizeof(*h)) {
2274                 int len, plen;
2275
2276                 len = h->nlmsg_len;
2277                 plen = len - sizeof(*h);
2278                 if (len > left || plen < 0) {
2279                         printf("Malformed netlink message: "
2280                                "len=%d left=%d plen=%d\n",
2281                                len, left, plen);
2282                         break;
2283                 }
2284
2285                 switch (h->nlmsg_type) {
2286                 case RTM_NEWLINK:
2287                         hostapd_wireless_event_rtm_newlink(drv, h, plen);
2288                         break;
2289                 }
2290
2291                 len = NLMSG_ALIGN(len);
2292                 left -= len;
2293                 h = (struct nlmsghdr *) ((char *) h + len);
2294         }
2295
2296         if (left > 0) {
2297                 printf("%d extra bytes in the end of netlink message\n", left);
2298         }
2299 }
2300
2301
2302 static int hostap_get_we_version(struct i802_driver_data *drv)
2303 {
2304         struct iw_range *range;
2305         struct iwreq iwr;
2306         int minlen;
2307         size_t buflen;
2308
2309         drv->we_version = 0;
2310
2311         /*
2312          * Use larger buffer than struct iw_range in order to allow the
2313          * structure to grow in the future.
2314          */
2315         buflen = sizeof(struct iw_range) + 500;
2316         range = os_zalloc(buflen);
2317         if (range == NULL)
2318                 return -1;
2319
2320         memset(&iwr, 0, sizeof(iwr));
2321         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2322         iwr.u.data.pointer = (caddr_t) range;
2323         iwr.u.data.length = buflen;
2324
2325         minlen = ((char *) &range->enc_capa) - (char *) range +
2326                 sizeof(range->enc_capa);
2327
2328         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2329                 perror("ioctl[SIOCGIWRANGE]");
2330                 free(range);
2331                 return -1;
2332         } else if (iwr.u.data.length >= minlen &&
2333                    range->we_version_compiled >= 18) {
2334                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2335                            "WE(source)=%d enc_capa=0x%x",
2336                            range->we_version_compiled,
2337                            range->we_version_source,
2338                            range->enc_capa);
2339                 drv->we_version = range->we_version_compiled;
2340         }
2341
2342         free(range);
2343         return 0;
2344 }
2345
2346
2347 static int i802_wireless_event_init(void *priv)
2348 {
2349         struct i802_driver_data *drv = priv;
2350         int s;
2351         struct sockaddr_nl local;
2352
2353         hostap_get_we_version(drv);
2354
2355         drv->wext_sock = -1;
2356
2357         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2358         if (s < 0) {
2359                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2360                 return -1;
2361         }
2362
2363         memset(&local, 0, sizeof(local));
2364         local.nl_family = AF_NETLINK;
2365         local.nl_groups = RTMGRP_LINK;
2366         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2367                 perror("bind(netlink)");
2368                 close(s);
2369                 return -1;
2370         }
2371
2372         eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2373                                  NULL);
2374         drv->wext_sock = s;
2375
2376         return 0;
2377 }
2378
2379
2380 static void i802_wireless_event_deinit(void *priv)
2381 {
2382         struct i802_driver_data *drv = priv;
2383         if (drv->wext_sock < 0)
2384                 return;
2385         eloop_unregister_read_sock(drv->wext_sock);
2386         close(drv->wext_sock);
2387 }
2388
2389
2390 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2391 {
2392         struct i802_driver_data *drv = priv;
2393         struct ieee80211_mgmt mgmt;
2394
2395         memset(&mgmt, 0, sizeof(mgmt));
2396         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2397                                           WLAN_FC_STYPE_DEAUTH);
2398         memcpy(mgmt.da, addr, ETH_ALEN);
2399         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2400         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2401         mgmt.u.deauth.reason_code = host_to_le16(reason);
2402         return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2403                                       sizeof(mgmt.u.deauth), 0);
2404 }
2405
2406
2407 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2408 {
2409         struct i802_driver_data *drv = priv;
2410         struct ieee80211_mgmt mgmt;
2411
2412         memset(&mgmt, 0, sizeof(mgmt));
2413         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2414                                           WLAN_FC_STYPE_DISASSOC);
2415         memcpy(mgmt.da, addr, ETH_ALEN);
2416         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2417         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2418         mgmt.u.disassoc.reason_code = host_to_le16(reason);
2419         return  i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2420                                        sizeof(mgmt.u.disassoc), 0);
2421 }
2422
2423
2424 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2425 {
2426         struct i802_driver_data *drv;
2427
2428         drv = os_zalloc(sizeof(struct i802_driver_data));
2429         if (drv == NULL) {
2430                 printf("Could not allocate memory for i802 driver data\n");
2431                 return NULL;
2432         }
2433
2434         drv->hapd = hapd;
2435         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2436
2437         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2438         drv->if_indices = drv->default_if_indices;
2439         drv->bridge = if_nametoindex(hapd->conf->bridge);
2440
2441         if (i802_init_sockets(drv, bssid))
2442                 goto failed;
2443
2444         return drv;
2445
2446 failed:
2447         free(drv);
2448         return NULL;
2449 }
2450
2451
2452 static void *i802_init(struct hostapd_data *hapd)
2453 {
2454         return i802_init_bssid(hapd, NULL);
2455 }
2456
2457
2458 static void i802_deinit(void *priv)
2459 {
2460         struct i802_driver_data *drv = priv;
2461
2462         if (drv->last_freq_ht) {
2463                 /* Clear HT flags from the driver */
2464                 struct hostapd_freq_params freq;
2465                 os_memset(&freq, 0, sizeof(freq));
2466                 freq.freq = drv->last_freq;
2467                 i802_set_freq2(priv, &freq);
2468         }
2469
2470         i802_del_beacon(drv);
2471
2472         /* remove monitor interface */
2473         nl80211_remove_iface(drv, drv->monitor_ifidx);
2474
2475         (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2476
2477         if (drv->monitor_sock >= 0) {
2478                 eloop_unregister_read_sock(drv->monitor_sock);
2479                 close(drv->monitor_sock);
2480         }
2481         if (drv->ioctl_sock >= 0)
2482                 close(drv->ioctl_sock);
2483         if (drv->eapol_sock >= 0) {
2484                 eloop_unregister_read_sock(drv->eapol_sock);
2485                 close(drv->eapol_sock);
2486         }
2487
2488         genl_family_put(drv->nl80211);
2489         nl_cache_free(drv->nl_cache);
2490         nl_handle_destroy(drv->nl_handle);
2491         nl_cb_put(drv->nl_cb);
2492
2493         if (drv->if_indices != drv->default_if_indices)
2494                 free(drv->if_indices);
2495
2496         free(drv);
2497 }
2498
2499
2500 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2501         .name = "nl80211",
2502         .init = i802_init,
2503         .init_bssid = i802_init_bssid,
2504         .deinit = i802_deinit,
2505         .wireless_event_init = i802_wireless_event_init,
2506         .wireless_event_deinit = i802_wireless_event_deinit,
2507         .set_ieee8021x = i802_set_ieee8021x,
2508         .set_privacy = i802_set_privacy,
2509         .set_encryption = i802_set_encryption,
2510         .get_seqnum = i802_get_seqnum,
2511         .flush = i802_flush,
2512         .read_sta_data = i802_read_sta_data,
2513         .send_eapol = i802_send_eapol,
2514         .sta_set_flags = i802_sta_set_flags,
2515         .sta_deauth = i802_sta_deauth,
2516         .sta_disassoc = i802_sta_disassoc,
2517         .sta_remove = i802_sta_remove,
2518         .send_mgmt_frame = i802_send_mgmt_frame,
2519         .sta_add2 = i802_sta_add2,
2520         .get_inact_sec = i802_get_inact_sec,
2521         .sta_clear_stats = i802_sta_clear_stats,
2522         .set_freq2 = i802_set_freq2,
2523         .set_rts = i802_set_rts,
2524         .get_rts = i802_get_rts,
2525         .set_frag = i802_set_frag,
2526         .get_frag = i802_get_frag,
2527         .set_retry = i802_set_retry,
2528         .get_retry = i802_get_retry,
2529         .set_rate_sets = i802_set_rate_sets,
2530         .set_regulatory_domain = i802_set_regulatory_domain,
2531         .set_beacon = i802_set_beacon,
2532         .set_internal_bridge = i802_set_internal_bridge,
2533         .set_beacon_int = i802_set_beacon_int,
2534         .set_dtim_period = i802_set_dtim_period,
2535         .set_cts_protect = i802_set_cts_protect,
2536         .set_preamble = i802_set_preamble,
2537         .set_short_slot_time = i802_set_short_slot_time,
2538         .set_tx_queue_params = i802_set_tx_queue_params,
2539         .bss_add = i802_bss_add,
2540         .bss_remove = i802_bss_remove,
2541         .if_add = i802_if_add,
2542         .if_update = i802_if_update,
2543         .if_remove = i802_if_remove,
2544         .get_hw_feature_data = i802_get_hw_feature_data,
2545         .set_sta_vlan = i802_set_sta_vlan,
2546         .set_country = i802_set_country,
2547 };