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 <linux/nl80211.h>
  27 #include <net/if.h>
  28 #include <linux/if_packet.h>
  29 #include <linux/if_ether.h>   /* The L2 protocols */
  30 #include "wireless_copy.h"
  31 #include <net/if_arp.h>
  32
  33 #include "hostapd.h"
  34 #include "driver.h"
  35 #include "ieee802_1x.h"
  36 #include "eloop.h"
  37 #include "ieee802_11.h"
  38 #include "sta_info.h"
  39 #include "hw_features.h"
  40 #include "mlme.h"
  41 #include "radiotap.h"
  42 #include "radiotap_iter.h"
  43
  44 enum ieee80211_msg_type {
  45         ieee80211_msg_normal = 0,
  46         ieee80211_msg_tx_callback_ack = 1,
  47         ieee80211_msg_tx_callback_fail = 2,
  48 };
  49
  50 struct i802_driver_data {
  51         struct hostapd_data *hapd;
  52
  53         char iface[IFNAMSIZ + 1];
  54         int bridge;
  55         int ioctl_sock; /* socket for ioctl() use */
  56         int wext_sock; /* socket for wireless events */
  57         int eapol_sock; /* socket for EAPOL frames */
  58         int monitor_sock; /* socket for monitor */
  59         int monitor_ifidx;
  60
  61         int default_if_indices[16];
  62         int *if_indices;
  63         int num_if_indices;
  64
  65         int we_version;
  66         struct nl_handle *nl_handle;
  67         struct nl_cache *nl_cache;
  68         struct nl_cb *nl_cb;
  69         struct genl_family *nl80211;
  70         int dtim_period, beacon_int;
  71         unsigned int beacon_set:1;
  72         unsigned int ieee802_1x_active:1;
  73
  74         int last_freq;
  75         int last_freq_ht;
  76 };
  77
  78
  79 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
  80 {
  81         int i;
  82         int *old;
  83
  84         for (i = 0; i < drv->num_if_indices; i++) {
  85                 if (drv->if_indices[i] == 0) {
  86                         drv->if_indices[i] = ifidx;
  87                         return;
  88                 }
  89         }
  90
  91         if (drv->if_indices != drv->default_if_indices)
  92                 old = drv->if_indices;
  93         else
  94                 old = NULL;
  95
  96         drv->if_indices = realloc(old,
  97                                   sizeof(int) * (drv->num_if_indices + 1));
  98         if (!drv->if_indices) {
  99                 if (!old)
 100                         drv->if_indices = drv->default_if_indices;
 101                 else
 102                         drv->if_indices = old;
 103                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
 104                            "interfaces");
 105                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
 106                 return;
 107         }
 108         drv->if_indices[drv->num_if_indices] = ifidx;
 109         drv->num_if_indices++;
 110 }
 111
 112
 113 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
 114 {
 115         int i;
 116
 117         for (i = 0; i < drv->num_if_indices; i++) {
 118                 if (drv->if_indices[i] == ifidx) {
 119                         drv->if_indices[i] = 0;
 120                         break;
 121                 }
 122         }
 123 }
 124
 125
 126 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
 127 {
 128         int i;
 129
 130         if (ifidx == drv->bridge)
 131                 return 1;
 132
 133         for (i = 0; i < drv->num_if_indices; i++)
 134                 if (drv->if_indices[i] == ifidx)
 135                         return 1;
 136
 137         return 0;
 138 }
 139
 140
 141 /* nl80211 code */
 142 static int ack_handler(struct nl_msg *msg, void *arg)
 143 {
 144         int *err = arg;
 145         *err = 0;
 146         return NL_STOP;
 147 }
 148
 149 static int finish_handler(struct nl_msg *msg, void *arg)
 150 {
 151         int *ret = arg;
 152         *ret = 0;
 153         return NL_SKIP;
 154 }
 155
 156 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 157                          void *arg)
 158 {
 159         int *ret = arg;
 160         *ret = err->error;
 161         return NL_SKIP;
 162 }
 163
 164 static int send_and_recv_msgs(struct i802_driver_data *drv,
 165                               struct nl_msg *msg,
 166                               int (*valid_handler)(struct nl_msg *, void *),
 167                               void *valid_data)
 168 {
 169         struct nl_cb *cb;
 170         int err = -ENOMEM;
 171
 172         cb = nl_cb_clone(drv->nl_cb);
 173         if (!cb)
 174                 goto out;
 175
 176         err = nl_send_auto_complete(drv->nl_handle, msg);
 177         if (err < 0)
 178                 goto out;
 179
 180         err = 1;
 181
 182         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 183         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 184         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 185
 186         if (valid_handler)
 187                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 188                           valid_handler, valid_data);
 189
 190         while (err > 0)
 191                 nl_recvmsgs(drv->nl_handle, cb);
 192  out:
 193         nl_cb_put(cb);
 194         nlmsg_free(msg);
 195         return err;
 196 }
 197
 198 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
 199                                    const char *ifname, int dev_up)
 200 {
 201         struct ifreq ifr;
 202
 203         if (drv->ioctl_sock < 0)
 204                 return -1;
 205
 206         memset(&ifr, 0, sizeof(ifr));
 207         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 208
 209         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 210                 perror("ioctl[SIOCGIFFLAGS]");
 211                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 212                            drv->iface);
 213                 return -1;
 214         }
 215
 216         if (dev_up)
 217                 ifr.ifr_flags |= IFF_UP;
 218         else
 219                 ifr.ifr_flags &= ~IFF_UP;
 220
 221         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 222                 perror("ioctl[SIOCSIFFLAGS]");
 223                 return -1;
 224         }
 225
 226         return 0;
 227 }
 228
 229
 230 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
 231                        const char *alg, const u8 *addr, int idx, const u8 *key,
 232                        size_t key_len, int txkey)
 233 {
 234         struct nl_msg *msg;
 235         int ret;
 236
 237         msg = nlmsg_alloc();
 238         if (!msg)
 239                 return -ENOMEM;
 240
 241         if (strcmp(alg, "none") == 0) {
 242                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 243                             0, NL80211_CMD_DEL_KEY, 0);
 244         } else {
 245                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 246                             0, NL80211_CMD_NEW_KEY, 0);
 247                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
 248                 if (strcmp(alg, "WEP") == 0) {
 249                         if (key_len == 5)
 250                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 251                                             0x000FAC01);
 252                         else
 253                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 254                                             0x000FAC05);
 255                 } else if (strcmp(alg, "TKIP") == 0)
 256                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
 257                 else if (strcmp(alg, "CCMP") == 0)
 258                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
 259                 else if (strcmp(alg, "IGTK") == 0)
 260                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
 261                 else {
 262                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
 263                                    "algorithm '%s'", __func__, alg);
 264                         nlmsg_free(msg);
 265                         return -1;
 266                 }
 267         }
 268
 269         if (addr)
 270                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 271         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 272         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 273
 274         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 275         if (ret == -ENOENT)
 276                 ret = 0;
 277
 278         /*
 279          * If we failed or don't need to set the default TX key (below),
 280          * we're done here.
 281          */
 282         if (ret || !txkey || addr)
 283                 return ret;
 284
 285         msg = nlmsg_alloc();
 286         if (!msg)
 287                 return -ENOMEM;
 288
 289         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 290                     0, NL80211_CMD_SET_KEY, 0);
 291         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 292         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 293 #ifdef NL80211_MFP_PENDING
 294         if (strcmp(alg, "IGTK") == 0)
 295                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
 296         else
 297                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 298 #else /* NL80211_MFP_PENDING */
 299         NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 300 #endif /* NL80211_MFP_PENDING */
 301
 302         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 303         if (ret == -ENOENT)
 304                 ret = 0;
 305         return ret;
 306  nla_put_failure:
 307         return -ENOBUFS;
 308 }
 309
 310
 311 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
 312                                const u8 *addr, int idx, const u8 *key,
 313                                size_t key_len, int txkey)
 314 {
 315         struct i802_driver_data *drv = priv;
 316         int ret;
 317
 318         ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
 319                           key_len, txkey);
 320         if (ret < 0)
 321                 return ret;
 322
 323         if (strcmp(alg, "IGTK") == 0) {
 324                 ret = nl_set_encr(drv->monitor_ifidx, drv, alg, addr, idx, key,
 325                                   key_len, txkey);
 326         }
 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 #ifdef NL80211_ATTR_BSS_BASIC_RATES
 391         struct i802_driver_data *drv = priv;
 392         struct nl_msg *msg;
 393         u8 rates[NL80211_MAX_SUPP_RATES];
 394         u8 rates_len = 0;
 395         int i;
 396
 397         msg = nlmsg_alloc();
 398         if (!msg)
 399                 return -ENOMEM;
 400
 401         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 402                     NL80211_CMD_SET_BSS, 0);
 403
 404         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
 405                 rates[rates_len++] = basic_rates[i] / 5;
 406
 407         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
 408
 409         /* TODO: multi-BSS support */
 410         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 411
 412         return send_and_recv_msgs(drv, msg, NULL, NULL);
 413  nla_put_failure:
 414         return -ENOBUFS;
 415 #else /* NL80211_ATTR_BSS_BASIC_RATES */
 416         return -1;
 417 #endif /* NL80211_ATTR_BSS_BASIC_RATES */
 418 }
 419
 420
 421 static int i802_send_frame(void *priv, const void *data, size_t len,
 422                            int encrypt, int flags)
 423 {
 424         __u8 rtap_hdr[] = {
 425                 0x00, 0x00, /* radiotap version */
 426                 0x0e, 0x00, /* radiotap length */
 427                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
 428                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
 429                 0x00,       /* padding */
 430                 0x00, 0x00, /* RX and TX flags to indicate that */
 431                 0x00, 0x00, /* this is the injected frame directly */
 432         };
 433         struct i802_driver_data *drv = priv;
 434         struct iovec iov[2] = {
 435                 {
 436                         .iov_base = &rtap_hdr,
 437                         .iov_len = sizeof(rtap_hdr),
 438                 },
 439                 {
 440                         .iov_base = (void*)data,
 441                         .iov_len = len,
 442                 }
 443         };
 444         struct msghdr msg = {
 445                 .msg_name = NULL,
 446                 .msg_namelen = 0,
 447                 .msg_iov = iov,
 448                 .msg_iovlen = 2,
 449                 .msg_control = NULL,
 450                 .msg_controllen = 0,
 451                 .msg_flags = 0,
 452         };
 453
 454         if (encrypt)
 455                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
 456
 457         return sendmsg(drv->monitor_sock, &msg, flags);
 458 }
 459
 460 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
 461                                 int flags)
 462 {
 463         return i802_send_frame(priv, data, len, 1, flags);
 464 }
 465
 466 /* Set kernel driver on given frequency (MHz) */
 467 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
 468 {
 469 #ifdef NL80211_ATTR_WIPHY_FREQ
 470         struct i802_driver_data *drv = priv;
 471         struct nl_msg *msg;
 472
 473         msg = nlmsg_alloc();
 474         if (!msg)
 475                 return -1;
 476
 477         drv->last_freq = freq->freq;
 478         drv->last_freq_ht = freq->ht_enabled;
 479
 480         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 481                     NL80211_CMD_SET_WIPHY, 0);
 482
 483         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 484         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
 485         if (freq->ht_enabled) {
 486                 switch (freq->sec_channel_offset) {
 487                 case -1:
 488                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 489                                     NL80211_SEC_CHAN_BELOW);
 490                         break;
 491                 case 1:
 492                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 493                                     NL80211_SEC_CHAN_ABOVE);
 494                         break;
 495                 default:
 496                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 497                                     NL80211_SEC_CHAN_DISABLED);
 498                         break;
 499                 }
 500         }
 501
 502         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 503                 return 0;
 504  nla_put_failure:
 505         return -1;
 506 #else /* NL80211_ATTR_WIPHY_FREQ */
 507         struct i802_driver_data *drv = priv;
 508         struct iwreq iwr;
 509
 510         memset(&iwr, 0, sizeof(iwr));
 511         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 512         iwr.u.freq.m = freq->freq;
 513         iwr.u.freq.e = 6;
 514
 515         if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
 516                 perror("ioctl[SIOCSIWFREQ]");
 517                 return -1;
 518         }
 519
 520         return 0;
 521 #endif /* NL80211_ATTR_WIPHY_FREQ */
 522 }
 523
 524
 525 static int i802_set_rts(void *priv, int rts)
 526 {
 527         struct i802_driver_data *drv = priv;
 528         struct iwreq iwr;
 529
 530         memset(&iwr, 0, sizeof(iwr));
 531         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 532         iwr.u.rts.value = rts;
 533         iwr.u.rts.fixed = 1;
 534
 535         if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
 536                 perror("ioctl[SIOCSIWRTS]");
 537                 return -1;
 538         }
 539
 540         return 0;
 541 }
 542
 543
 544 static int i802_get_rts(void *priv, int *rts)
 545 {
 546         struct i802_driver_data *drv = priv;
 547         struct iwreq iwr;
 548
 549         memset(&iwr, 0, sizeof(iwr));
 550         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 551
 552         if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
 553                 perror("ioctl[SIOCGIWRTS]");
 554                 return -1;
 555         }
 556
 557         *rts = iwr.u.rts.value;
 558
 559         return 0;
 560 }
 561
 562
 563 static int i802_set_frag(void *priv, int frag)
 564 {
 565         struct i802_driver_data *drv = priv;
 566         struct iwreq iwr;
 567
 568         memset(&iwr, 0, sizeof(iwr));
 569         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 570         iwr.u.frag.value = frag;
 571         iwr.u.frag.fixed = 1;
 572
 573         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 574                 perror("ioctl[SIOCSIWFRAG]");
 575                 return -1;
 576         }
 577
 578         return 0;
 579 }
 580
 581
 582 static int i802_get_frag(void *priv, int *frag)
 583 {
 584         struct i802_driver_data *drv = priv;
 585         struct iwreq iwr;
 586
 587         memset(&iwr, 0, sizeof(iwr));
 588         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 589
 590         if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
 591                 perror("ioctl[SIOCGIWFRAG]");
 592                 return -1;
 593         }
 594
 595         *frag = iwr.u.frag.value;
 596
 597         return 0;
 598 }
 599
 600
 601 static int i802_set_retry(void *priv, int short_retry, int long_retry)
 602 {
 603         struct i802_driver_data *drv = priv;
 604         struct iwreq iwr;
 605
 606         memset(&iwr, 0, sizeof(iwr));
 607         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 608
 609         iwr.u.retry.value = short_retry;
 610         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 611         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 612                 perror("ioctl[SIOCSIWRETRY(short)]");
 613                 return -1;
 614         }
 615
 616         iwr.u.retry.value = long_retry;
 617         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 618         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 619                 perror("ioctl[SIOCSIWRETRY(long)]");
 620                 return -1;
 621         }
 622
 623         return 0;
 624 }
 625
 626
 627 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
 628 {
 629         struct i802_driver_data *drv = priv;
 630         struct iwreq iwr;
 631
 632         memset(&iwr, 0, sizeof(iwr));
 633         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 634
 635         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 636         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 637                 perror("ioctl[SIOCGIWFRAG(short)]");
 638                 return -1;
 639         }
 640         *short_retry = iwr.u.retry.value;
 641
 642         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 643         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 644                 perror("ioctl[SIOCGIWFRAG(long)]");
 645                 return -1;
 646         }
 647         *long_retry = iwr.u.retry.value;
 648
 649         return 0;
 650 }
 651
 652
 653 static int i802_flush(void *priv)
 654 {
 655         struct i802_driver_data *drv = priv;
 656         struct nl_msg *msg;
 657
 658         msg = nlmsg_alloc();
 659         if (!msg)
 660                 return -1;
 661
 662         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 663                     0, NL80211_CMD_DEL_STATION, 0);
 664
 665         /*
 666          * XXX: FIX! this needs to flush all VLANs too
 667          */
 668         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 669                     if_nametoindex(drv->iface));
 670
 671         return send_and_recv_msgs(drv, msg, NULL, NULL);
 672  nla_put_failure:
 673         return -ENOBUFS;
 674 }
 675
 676
 677 static int get_sta_handler(struct nl_msg *msg, void *arg)
 678 {
 679         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 680         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 681         struct hostap_sta_driver_data *data = arg;
 682         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
 683         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
 684                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
 685                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
 686                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
 687         };
 688
 689         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 690                   genlmsg_attrlen(gnlh, 0), NULL);
 691
 692         /*
 693          * TODO: validate the interface and mac address!
 694          * Otherwise, there's a race condition as soon as
 695          * the kernel starts sending station notifications.
 696          */
 697
 698         if (!tb[NL80211_ATTR_STA_INFO]) {
 699                 wpa_printf(MSG_DEBUG, "sta stats missing!");
 700                 return NL_SKIP;
 701         }
 702         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
 703                              tb[NL80211_ATTR_STA_INFO],
 704                              stats_policy)) {
 705                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
 706                 return NL_SKIP;
 707         }
 708
 709         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
 710                 data->inactive_msec =
 711                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
 712         if (stats[NL80211_STA_INFO_RX_BYTES])
 713                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
 714         if (stats[NL80211_STA_INFO_TX_BYTES])
 715                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
 716
 717         return NL_SKIP;
 718 }
 719
 720 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
 721                               const u8 *addr)
 722 {
 723         struct i802_driver_data *drv = priv;
 724         struct nl_msg *msg;
 725
 726         msg = nlmsg_alloc();
 727         if (!msg)
 728                 return -ENOMEM;
 729
 730         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 731                     0, NL80211_CMD_GET_STATION, 0);
 732
 733         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 734         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 735
 736         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
 737  nla_put_failure:
 738         return -ENOBUFS;
 739 }
 740
 741
 742 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
 743                            size_t data_len, int encrypt, const u8 *own_addr)
 744 {
 745         struct i802_driver_data *drv = priv;
 746         struct ieee80211_hdr *hdr;
 747         size_t len;
 748         u8 *pos;
 749         int res;
 750 #if 0 /* FIX */
 751         int qos = sta->flags & WLAN_STA_WME;
 752 #else
 753         int qos = 0;
 754 #endif
 755
 756         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
 757                 data_len;
 758         hdr = os_zalloc(len);
 759         if (hdr == NULL) {
 760                 printf("malloc() failed for i802_send_data(len=%lu)\n",
 761                        (unsigned long) len);
 762                 return -1;
 763         }
 764
 765         hdr->frame_control =
 766                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
 767         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
 768         if (encrypt)
 769                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 770 #if 0 /* To be enabled if qos determination is added above */
 771         if (qos) {
 772                 hdr->frame_control |=
 773                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
 774         }
 775 #endif
 776
 777         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
 778         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 779         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 780         pos = (u8 *) (hdr + 1);
 781
 782 #if 0 /* To be enabled if qos determination is added above */
 783         if (qos) {
 784                 /* add an empty QoS header if needed */
 785                 pos[0] = 0;
 786                 pos[1] = 0;
 787                 pos += 2;
 788         }
 789 #endif
 790
 791         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
 792         pos += sizeof(rfc1042_header);
 793         WPA_PUT_BE16(pos, ETH_P_PAE);
 794         pos += 2;
 795         memcpy(pos, data, data_len);
 796
 797         res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
 798         free(hdr);
 799
 800         if (res < 0) {
 801                 perror("i802_send_eapol: send");
 802                 printf("i802_send_eapol - packet len: %lu - failed\n",
 803                        (unsigned long) len);
 804         }
 805
 806         return res;
 807 }
 808
 809
 810 static int i802_sta_add2(const char *ifname, void *priv,
 811                          struct hostapd_sta_add_params *params)
 812 {
 813         struct i802_driver_data *drv = priv;
 814         struct nl_msg *msg;
 815         int ret = -ENOBUFS;
 816
 817         msg = nlmsg_alloc();
 818         if (!msg)
 819                 return -ENOMEM;
 820
 821         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 822                     0, NL80211_CMD_NEW_STATION, 0);
 823
 824         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 825                     if_nametoindex(drv->iface));
 826         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
 827         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
 828         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
 829                 params->supp_rates);
 830         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
 831                     params->listen_interval);
 832
 833 #ifdef CONFIG_IEEE80211N
 834 #ifdef NL80211_ATTR_HT_CAPABILITY
 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 /* NL80211_ATTR_HT_CAPABILITY */
 841 #endif /* CONFIG_IEEE80211N */
 842
 843         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 844         if (ret == -EEXIST)
 845                 ret = 0;
 846  nla_put_failure:
 847         return ret;
 848 }
 849
 850
 851 static int i802_sta_remove(void *priv, const u8 *addr)
 852 {
 853         struct i802_driver_data *drv = priv;
 854         struct nl_msg *msg;
 855         int ret;
 856
 857         msg = nlmsg_alloc();
 858         if (!msg)
 859                 return -ENOMEM;
 860
 861         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 862                     0, NL80211_CMD_DEL_STATION, 0);
 863
 864         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 865                     if_nametoindex(drv->iface));
 866         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 867
 868         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 869         if (ret == -ENOENT)
 870                 return 0;
 871         return ret;
 872  nla_put_failure:
 873         return -ENOBUFS;
 874 }
 875
 876
 877 static int i802_sta_set_flags(void *priv, const u8 *addr,
 878                               int total_flags, int flags_or, int flags_and)
 879 {
 880         struct i802_driver_data *drv = priv;
 881         struct nl_msg *msg, *flags = NULL;
 882
 883         msg = nlmsg_alloc();
 884         if (!msg)
 885                 return -ENOMEM;
 886
 887         flags = nlmsg_alloc();
 888         if (!flags) {
 889                 nlmsg_free(msg);
 890                 return -ENOMEM;
 891         }
 892
 893         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 894                     0, NL80211_CMD_SET_STATION, 0);
 895
 896         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 897                     if_nametoindex(drv->iface));
 898         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 899
 900         if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
 901                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
 902
 903         if (total_flags & WLAN_STA_WME)
 904                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
 905
 906         if (total_flags & WLAN_STA_SHORT_PREAMBLE)
 907                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
 908
 909 #ifdef NL80211_MFP_PENDING
 910         if (total_flags & WLAN_STA_MFP)
 911                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
 912 #endif /* NL80211_MFP_PENDING */
 913
 914         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
 915                 goto nla_put_failure;
 916
 917         nlmsg_free(flags);
 918
 919         return send_and_recv_msgs(drv, msg, NULL, NULL);
 920  nla_put_failure:
 921         nlmsg_free(flags);
 922         return -ENOBUFS;
 923 }
 924
 925
 926 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
 927 {
 928         return -1;
 929 }
 930
 931
 932 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 933                                     int cw_min, int cw_max, int burst_time)
 934 {
 935 #ifdef NL80211_ATTR_WIPHY_TXQ_PARAMS
 936         struct i802_driver_data *drv = priv;
 937         struct nl_msg *msg;
 938         struct nlattr *txq, *params;
 939
 940         msg = nlmsg_alloc();
 941         if (!msg)
 942                 return -1;
 943
 944         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 945                     0, NL80211_CMD_SET_WIPHY, 0);
 946
 947         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 948
 949         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
 950         if (!txq)
 951                 goto nla_put_failure;
 952
 953         /* We are only sending parameters for a single TXQ at a time */
 954         params = nla_nest_start(msg, 1);
 955         if (!params)
 956                 goto nla_put_failure;
 957
 958         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
 959         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
 960          * 32 usec, so need to convert the value here. */
 961         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
 962         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
 963         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
 964         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
 965
 966         nla_nest_end(msg, params);
 967
 968         nla_nest_end(msg, txq);
 969
 970         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 971                 return 0;
 972  nla_put_failure:
 973         return -1;
 974 #else /* NL80211_ATTR_WIPHY_TXQ_PARAMS */
 975         return -1;
 976 #endif /* NL80211_ATTR_WIPHY_TXQ_PARAMS */
 977 }
 978
 979
 980 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
 981 {
 982         struct nl_msg *msg;
 983
 984         /* stop listening for EAPOL on this interface */
 985         del_ifidx(drv, ifidx);
 986
 987         msg = nlmsg_alloc();
 988         if (!msg)
 989                 goto nla_put_failure;
 990
 991         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 992                     0, NL80211_CMD_DEL_INTERFACE, 0);
 993         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
 994
 995         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 996                 return;
 997  nla_put_failure:
 998         printf("Failed to remove interface.\n");
 999 }
1000
1001
1002 static int nl80211_create_iface(struct i802_driver_data *drv,
1003                                 const char *ifname,
1004                                 enum nl80211_iftype iftype,
1005                                 const u8 *addr)
1006 {
1007         struct nl_msg *msg, *flags = NULL;
1008         int ifidx;
1009         struct ifreq ifreq;
1010         struct iwreq iwr;
1011         int ret = -ENOBUFS;
1012
1013         msg = nlmsg_alloc();
1014         if (!msg)
1015                 return -1;
1016
1017         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1018                     0, NL80211_CMD_NEW_INTERFACE, 0);
1019         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1020                     if_nametoindex(drv->hapd->conf->iface));
1021         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1022         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1023
1024         if (iftype == NL80211_IFTYPE_MONITOR) {
1025                 int err;
1026
1027                 flags = nlmsg_alloc();
1028                 if (!flags)
1029                         goto nla_put_failure;
1030
1031                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1032
1033                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1034
1035                 nlmsg_free(flags);
1036
1037                 if (err)
1038                         goto nla_put_failure;
1039         }
1040
1041         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1042         if (ret) {
1043  nla_put_failure:
1044                 printf("Failed to create interface %s.\n", ifname);
1045                 return ret;
1046         }
1047
1048         ifidx = if_nametoindex(ifname);
1049
1050         if (ifidx <= 0)
1051                 return -1;
1052
1053         /* start listening for EAPOL on this interface */
1054         add_ifidx(drv, ifidx);
1055
1056         if (addr) {
1057                 switch (iftype) {
1058                 case NL80211_IFTYPE_AP:
1059                         os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1060                         memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1061                         ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1062
1063                         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1064                                 nl80211_remove_iface(drv, ifidx);
1065                                 return -1;
1066                         }
1067                         break;
1068                 case NL80211_IFTYPE_WDS:
1069                         memset(&iwr, 0, sizeof(iwr));
1070                         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1071                         iwr.u.addr.sa_family = ARPHRD_ETHER;
1072                         memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1073                         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1074                                 return -1;
1075                         break;
1076                 default:
1077                         /* nothing */
1078                         break;
1079                 }
1080         }
1081
1082         return ifidx;
1083 }
1084
1085
1086 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1087 {
1088         int ifidx;
1089
1090         /*
1091          * The kernel supports that when the low-level driver does,
1092          * but we currently don't because we need per-BSS data that
1093          * currently we can't handle easily.
1094          */
1095         return -1;
1096
1097         ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1098         if (ifidx < 0)
1099                 return -1;
1100         if (hostapd_set_iface_flags(priv, ifname, 1)) {
1101                 nl80211_remove_iface(priv, ifidx);
1102                 return -1;
1103         }
1104         return 0;
1105 }
1106
1107
1108 static int i802_bss_remove(void *priv, const char *ifname)
1109 {
1110         nl80211_remove_iface(priv, if_nametoindex(ifname));
1111         return 0;
1112 }
1113
1114
1115 static int i802_set_beacon(const char *iface, void *priv,
1116                            u8 *head, size_t head_len,
1117                            u8 *tail, size_t tail_len)
1118 {
1119         struct i802_driver_data *drv = priv;
1120         struct nl_msg *msg;
1121         u8 cmd = NL80211_CMD_NEW_BEACON;
1122         int ret;
1123
1124         msg = nlmsg_alloc();
1125         if (!msg)
1126                 return -ENOMEM;
1127
1128         if (drv->beacon_set)
1129                 cmd = NL80211_CMD_SET_BEACON;
1130
1131         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1132                     0, cmd, 0);
1133         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1134         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1135         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1136         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1137
1138         if (!drv->dtim_period)
1139                 drv->dtim_period = 2;
1140         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1141
1142         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1143         if (!ret)
1144                 drv->beacon_set = 1;
1145         return ret;
1146  nla_put_failure:
1147         return -ENOBUFS;
1148 }
1149
1150
1151 static int i802_del_beacon(struct i802_driver_data *drv)
1152 {
1153         struct nl_msg *msg;
1154
1155         msg = nlmsg_alloc();
1156         if (!msg)
1157                 return -ENOMEM;
1158
1159         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1160                     0, NL80211_CMD_DEL_BEACON, 0);
1161         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1162
1163         return send_and_recv_msgs(drv, msg, NULL, NULL);
1164  nla_put_failure:
1165         return -ENOBUFS;
1166 }
1167
1168
1169 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1170 {
1171         struct i802_driver_data *drv = priv;
1172
1173         /*
1174          * FIXME: This needs to be per interface (BSS)
1175          */
1176         drv->ieee802_1x_active = enabled;
1177         return 0;
1178 }
1179
1180
1181 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1182 {
1183         struct i802_driver_data *drv = priv;
1184         struct iwreq iwr;
1185
1186         memset(&iwr, 0, sizeof(iwr));
1187
1188         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1189         iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1190         iwr.u.param.value = enabled;
1191
1192         ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1193
1194         /* ignore errors, the kernel/driver might not care */
1195         return 0;
1196 }
1197
1198
1199 static int i802_set_internal_bridge(void *priv, int value)
1200 {
1201         return -1;
1202 }
1203
1204
1205 static int i802_set_beacon_int(void *priv, int value)
1206 {
1207         struct i802_driver_data *drv = priv;
1208         struct nl_msg *msg;
1209
1210         drv->beacon_int = value;
1211
1212         if (!drv->beacon_set)
1213                 return 0;
1214
1215         msg = nlmsg_alloc();
1216         if (!msg)
1217                 return -ENOMEM;
1218
1219         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1220                     0, NL80211_CMD_SET_BEACON, 0);
1221         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1222
1223         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1224
1225         return send_and_recv_msgs(drv, msg, NULL, NULL);
1226  nla_put_failure:
1227         return -ENOBUFS;
1228 }
1229
1230
1231 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1232 {
1233         struct i802_driver_data *drv = priv;
1234         struct nl_msg *msg;
1235
1236         msg = nlmsg_alloc();
1237         if (!msg)
1238                 return -ENOMEM;
1239
1240         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1241                     0, NL80211_CMD_SET_BEACON, 0);
1242         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1243
1244         drv->dtim_period = value;
1245         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1246
1247         return send_and_recv_msgs(drv, msg, NULL, NULL);
1248  nla_put_failure:
1249         return -ENOBUFS;
1250 }
1251
1252
1253 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1254 {
1255 #ifdef NL80211_CMD_SET_BSS
1256         struct i802_driver_data *drv = priv;
1257         struct nl_msg *msg;
1258
1259         msg = nlmsg_alloc();
1260         if (!msg)
1261                 return -ENOMEM;
1262
1263         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1264                     NL80211_CMD_SET_BSS, 0);
1265
1266         if (cts >= 0)
1267                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1268         if (preamble >= 0)
1269                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1270         if (slot >= 0)
1271                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1272
1273         /* TODO: multi-BSS support */
1274         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1275
1276         return send_and_recv_msgs(drv, msg, NULL, NULL);
1277  nla_put_failure:
1278         return -ENOBUFS;
1279 #else /* NL80211_CMD_SET_BSS */
1280         return -1;
1281 #endif /* NL80211_CMD_SET_BSS */
1282 }
1283
1284
1285 static int i802_set_cts_protect(void *priv, int value)
1286 {
1287         return i802_set_bss(priv, value, -1, -1);
1288 }
1289
1290
1291 static int i802_set_preamble(void *priv, int value)
1292 {
1293         return i802_set_bss(priv, -1, value, -1);
1294 }
1295
1296
1297 static int i802_set_short_slot_time(void *priv, int value)
1298 {
1299         return i802_set_bss(priv, -1, -1, value);
1300 }
1301
1302
1303 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1304 {
1305         switch (type) {
1306         case HOSTAPD_IF_VLAN:
1307                 return NL80211_IFTYPE_AP_VLAN;
1308         case HOSTAPD_IF_WDS:
1309                 return NL80211_IFTYPE_WDS;
1310         }
1311         return -1;
1312 }
1313
1314
1315 static int i802_if_add(const char *iface, void *priv,
1316                        enum hostapd_driver_if_type type, char *ifname,
1317                        const u8 *addr)
1318 {
1319         if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1320                 return -1;
1321         return 0;
1322 }
1323
1324
1325 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1326                           char *ifname, const u8 *addr)
1327 {
1328         /* unused at the moment */
1329         return -1;
1330 }
1331
1332
1333 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1334                           const char *ifname, const u8 *addr)
1335 {
1336         nl80211_remove_iface(priv, if_nametoindex(ifname));
1337         return 0;
1338 }
1339
1340
1341 struct phy_info_arg {
1342         u16 *num_modes;
1343         struct hostapd_hw_modes *modes;
1344 };
1345
1346 static int phy_info_handler(struct nl_msg *msg, void *arg)
1347 {
1348         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1349         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1350         struct phy_info_arg *phy_info = arg;
1351
1352         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1353
1354         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1355         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1356                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1357                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1358                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1359                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1360                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1361 #ifdef NL80211_FREQUENCY_ATTR_MAX_TX_POWER
1362                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1363 #endif /* NL80211_FREQUENCY_ATTR_MAX_TX_POWER */
1364         };
1365
1366         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1367         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1368                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1369                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1370         };
1371
1372         struct nlattr *nl_band;
1373         struct nlattr *nl_freq;
1374         struct nlattr *nl_rate;
1375         int rem_band, rem_freq, rem_rate;
1376         struct hostapd_hw_modes *mode;
1377         int idx, mode_is_set;
1378
1379         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1380                   genlmsg_attrlen(gnlh, 0), NULL);
1381
1382         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1383                 return NL_SKIP;
1384
1385         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1386                 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1387                 if (!mode)
1388                         return NL_SKIP;
1389                 phy_info->modes = mode;
1390
1391                 mode_is_set = 0;
1392
1393                 mode = &phy_info->modes[*(phy_info->num_modes)];
1394                 memset(mode, 0, sizeof(*mode));
1395                 *(phy_info->num_modes) += 1;
1396
1397                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1398                           nla_len(nl_band), NULL);
1399
1400                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1401                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1402                                   nla_len(nl_freq), freq_policy);
1403                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1404                                 continue;
1405                         mode->num_channels++;
1406                 }
1407
1408                 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1409                 if (!mode->channels)
1410                         return NL_SKIP;
1411
1412                 idx = 0;
1413
1414                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1415                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1416                                   nla_len(nl_freq), freq_policy);
1417                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1418                                 continue;
1419
1420                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1421                         mode->channels[idx].flag = 0;
1422
1423                         if (!mode_is_set) {
1424                                 /* crude heuristic */
1425                                 if (mode->channels[idx].freq < 4000)
1426                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
1427                                 else
1428                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
1429                                 mode_is_set = 1;
1430                         }
1431
1432                         /* crude heuristic */
1433                         if (mode->channels[idx].freq < 4000)
1434                                 if (mode->channels[idx].freq == 2848)
1435                                         mode->channels[idx].chan = 14;
1436                                 else
1437                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1438                         else
1439                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1440
1441                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1442                                 mode->channels[idx].flag |=
1443                                         HOSTAPD_CHAN_DISABLED;
1444                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1445                                 mode->channels[idx].flag |=
1446                                         HOSTAPD_CHAN_PASSIVE_SCAN;
1447                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1448                                 mode->channels[idx].flag |=
1449                                         HOSTAPD_CHAN_NO_IBSS;
1450                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1451                                 mode->channels[idx].flag |=
1452                                         HOSTAPD_CHAN_RADAR;
1453
1454 #ifdef NL80211_FREQUENCY_ATTR_MAX_TX_POWER
1455                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1456                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1457                                 mode->channels[idx].max_tx_power =
1458                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1459 #endif /* NL80211_FREQUENCY_ATTR_MAX_TX_POWER */
1460
1461                         idx++;
1462                 }
1463
1464                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1465                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1466                                   nla_len(nl_rate), rate_policy);
1467                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1468                                 continue;
1469                         mode->num_rates++;
1470                 }
1471
1472                 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1473                 if (!mode->rates)
1474                         return NL_SKIP;
1475
1476                 idx = 0;
1477
1478                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1479                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1480                                   nla_len(nl_rate), rate_policy);
1481                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1482                                 continue;
1483                         mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1484
1485                         /* crude heuristic */
1486                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1487                             mode->rates[idx].rate > 200)
1488                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
1489
1490                         if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1491                                 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1492
1493                         idx++;
1494                 }
1495         }
1496
1497         return NL_SKIP;
1498 }
1499
1500 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1501                                              u16 *num_modes)
1502 {
1503         u16 m;
1504         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1505         int i, mode11g_idx = -1;
1506
1507         /* If only 802.11g mode is included, use it to construct matching
1508          * 802.11b mode data. */
1509
1510         for (m = 0; m < *num_modes; m++) {
1511                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1512                         return modes; /* 802.11b already included */
1513                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1514                         mode11g_idx = m;
1515         }
1516
1517         if (mode11g_idx < 0)
1518                 return modes; /* 2.4 GHz band not supported at all */
1519
1520         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1521         if (nmodes == NULL)
1522                 return modes; /* Could not add 802.11b mode */
1523
1524         mode = &nmodes[*num_modes];
1525         os_memset(mode, 0, sizeof(*mode));
1526         (*num_modes)++;
1527         modes = nmodes;
1528
1529         mode->mode = HOSTAPD_MODE_IEEE80211B;
1530
1531         mode11g = &modes[mode11g_idx];
1532         mode->num_channels = mode11g->num_channels;
1533         mode->channels = os_malloc(mode11g->num_channels *
1534                                    sizeof(struct hostapd_channel_data));
1535         if (mode->channels == NULL) {
1536                 (*num_modes)--;
1537                 return modes; /* Could not add 802.11b mode */
1538         }
1539         os_memcpy(mode->channels, mode11g->channels,
1540                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1541
1542         mode->num_rates = 0;
1543         mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1544         if (mode->rates == NULL) {
1545                 os_free(mode->channels);
1546                 (*num_modes)--;
1547                 return modes; /* Could not add 802.11b mode */
1548         }
1549
1550         for (i = 0; i < mode11g->num_rates; i++) {
1551                 if (mode11g->rates[i].rate > 110 ||
1552                     mode11g->rates[i].flags &
1553                     (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1554                         continue;
1555                 mode->rates[mode->num_rates] = mode11g->rates[i];
1556                 mode->num_rates++;
1557                 if (mode->num_rates == 4)
1558                         break;
1559         }
1560
1561         if (mode->num_rates == 0) {
1562                 os_free(mode->channels);
1563                 os_free(mode->rates);
1564                 (*num_modes)--;
1565                 return modes; /* No 802.11b rates */
1566         }
1567
1568         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1569                    "information");
1570
1571         return modes;
1572 }
1573
1574 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1575                                                          u16 *num_modes,
1576                                                          u16 *flags)
1577 {
1578         struct i802_driver_data *drv = priv;
1579         struct nl_msg *msg;
1580         struct phy_info_arg result = {
1581                 .num_modes = num_modes,
1582                 .modes = NULL,
1583         };
1584
1585         *num_modes = 0;
1586         *flags = 0;
1587
1588         msg = nlmsg_alloc();
1589         if (!msg)
1590                 return NULL;
1591
1592         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1593                     0, NL80211_CMD_GET_WIPHY, 0);
1594
1595         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1596
1597         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1598                 return i802_add_11b(result.modes, num_modes);
1599  nla_put_failure:
1600         return NULL;
1601 }
1602
1603
1604 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1605                              const char *ifname, int vlan_id)
1606 {
1607         struct i802_driver_data *drv = priv;
1608         struct nl_msg *msg;
1609
1610         msg = nlmsg_alloc();
1611         if (!msg)
1612                 return -ENOMEM;
1613
1614         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1615                     0, NL80211_CMD_SET_STATION, 0);
1616
1617         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1618                     if_nametoindex(drv->iface));
1619         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1620         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1621                     if_nametoindex(ifname));
1622
1623         return send_and_recv_msgs(drv, msg, NULL, NULL);
1624  nla_put_failure:
1625         return -ENOBUFS;
1626 }
1627
1628
1629 static int i802_set_country(void *priv, const char *country)
1630 {
1631         struct i802_driver_data *drv = priv;
1632         struct nl_msg *msg;
1633         char alpha2[3];
1634
1635         msg = nlmsg_alloc();
1636         if (!msg)
1637                 return -ENOMEM;
1638
1639         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1640                     0, NL80211_CMD_REQ_SET_REG, 0);
1641
1642         alpha2[0] = country[0];
1643         alpha2[1] = country[1];
1644         alpha2[2] = '\0';
1645         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1646
1647         return send_and_recv_msgs(drv, msg, NULL, NULL);
1648  nla_put_failure:
1649         return -ENOBUFS;
1650 }
1651
1652
1653 static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
1654 {
1655         struct sta_info *sta;
1656
1657         sta = ap_get_sta(hapd, ta);
1658         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1659                 printf("Data/PS-poll frame from not associated STA "
1660                        MACSTR "\n", MAC2STR(ta));
1661                 if (sta && (sta->flags & WLAN_STA_AUTH))
1662                         hostapd_sta_disassoc(
1663                                 hapd, ta,
1664                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1665                 else
1666                         hostapd_sta_deauth(
1667                                 hapd, ta,
1668                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1669         }
1670 }
1671
1672
1673 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1674                                int ok)
1675 {
1676         struct ieee80211_hdr *hdr;
1677         u16 fc, type, stype;
1678         struct sta_info *sta;
1679
1680         hdr = (struct ieee80211_hdr *) buf;
1681         fc = le_to_host16(hdr->frame_control);
1682
1683         type = WLAN_FC_GET_TYPE(fc);
1684         stype = WLAN_FC_GET_STYPE(fc);
1685
1686         switch (type) {
1687         case WLAN_FC_TYPE_MGMT:
1688                 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1689                            ok ? "ACK" : "fail");
1690                 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1691                 break;
1692         case WLAN_FC_TYPE_CTRL:
1693                 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1694                            ok ? "ACK" : "fail");
1695                 break;
1696         case WLAN_FC_TYPE_DATA:
1697                 wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
1698                            ok ? "ACK" : "fail");
1699                 sta = ap_get_sta(hapd, hdr->addr1);
1700                 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1701                         wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1702                                    "activity poll", MAC2STR(sta->addr),
1703                                    ok ? "ACKed" : "did not ACK");
1704                         if (ok)
1705                                 sta->flags &= ~WLAN_STA_PENDING_POLL;
1706                 }
1707                 if (sta)
1708                         ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1709                 break;
1710         default:
1711                 printf("unknown TX callback frame type %d\n", type);
1712                 break;
1713         }
1714 }
1715
1716
1717 static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
1718                          struct hostapd_frame_info *hfi,
1719                          enum ieee80211_msg_type msg_type)
1720 {
1721         struct ieee80211_hdr *hdr;
1722         u16 fc, type, stype;
1723         size_t data_len = len;
1724         struct hostapd_data *hapd = NULL;
1725         int broadcast_bssid = 0;
1726         size_t i;
1727         u8 *bssid;
1728
1729         /*
1730          * PS-Poll frames are 16 bytes. All other frames are
1731          * 24 bytes or longer.
1732          */
1733         if (len < 16)
1734                 return;
1735
1736         hdr = (struct ieee80211_hdr *) buf;
1737         fc = le_to_host16(hdr->frame_control);
1738
1739         type = WLAN_FC_GET_TYPE(fc);
1740         stype = WLAN_FC_GET_STYPE(fc);
1741
1742         switch (type) {
1743         case WLAN_FC_TYPE_DATA:
1744                 if (len < 24)
1745                         return;
1746                 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1747                 case WLAN_FC_TODS:
1748                         bssid = hdr->addr1;
1749                         break;
1750                 default:
1751                         /* discard */
1752                         return;
1753                 }
1754                 break;
1755         case WLAN_FC_TYPE_CTRL:
1756                 /* discard non-ps-poll frames */
1757                 if (stype != WLAN_FC_STYPE_PSPOLL)
1758                         return;
1759                 bssid = hdr->addr1;
1760                 break;
1761         case WLAN_FC_TYPE_MGMT:
1762                 bssid = hdr->addr3;
1763                 break;
1764         default:
1765                 /* discard */
1766                 return;
1767         }
1768
1769         /* find interface frame belongs to */
1770         for (i = 0; i < iface->num_bss; i++) {
1771                 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1772                         hapd = iface->bss[i];
1773                         break;
1774                 }
1775         }
1776
1777         if (hapd == NULL) {
1778                 hapd = iface->bss[0];
1779
1780                 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1781                     bssid[2] != 0xff || bssid[3] != 0xff ||
1782                     bssid[4] != 0xff || bssid[5] != 0xff) {
1783                         /*
1784                          * Unknown BSSID - drop frame if this is not from
1785                          * passive scanning or a beacon (at least ProbeReq
1786                          * frames to other APs may be allowed through RX
1787                          * filtering in the wlan hw/driver)
1788                          */
1789                         if ((type != WLAN_FC_TYPE_MGMT ||
1790                              stype != WLAN_FC_STYPE_BEACON))
1791                                 return;
1792                 } else
1793                         broadcast_bssid = 1;
1794         }
1795
1796         switch (msg_type) {
1797         case ieee80211_msg_normal:
1798                 /* continue processing */
1799                 break;
1800         case ieee80211_msg_tx_callback_ack:
1801                 handle_tx_callback(hapd, buf, data_len, 1);
1802                 return;
1803         case ieee80211_msg_tx_callback_fail:
1804                 handle_tx_callback(hapd, buf, data_len, 0);
1805                 return;
1806         }
1807
1808         switch (type) {
1809         case WLAN_FC_TYPE_MGMT:
1810                 if (stype != WLAN_FC_STYPE_BEACON &&
1811                     stype != WLAN_FC_STYPE_PROBE_REQ)
1812                         wpa_printf(MSG_MSGDUMP, "MGMT");
1813                 if (broadcast_bssid) {
1814                         for (i = 0; i < iface->num_bss; i++)
1815                                 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1816                                                 stype, hfi);
1817                 } else
1818                         ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1819                 break;
1820         case WLAN_FC_TYPE_CTRL:
1821                 /* can only get here with PS-Poll frames */
1822                 wpa_printf(MSG_DEBUG, "CTRL");
1823                 handle_unknown_sta(hapd, hdr->addr2);
1824                 break;
1825         case WLAN_FC_TYPE_DATA:
1826                 wpa_printf(MSG_DEBUG, "DATA");
1827                 handle_unknown_sta(hapd, hdr->addr2);
1828                 break;
1829         }
1830 }
1831
1832
1833 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1834 {
1835         struct i802_driver_data *drv = eloop_ctx;
1836         struct hostapd_data *hapd = drv->hapd;
1837         struct sockaddr_ll lladdr;
1838         unsigned char buf[3000];
1839         int len;
1840         socklen_t fromlen = sizeof(lladdr);
1841
1842         len = recvfrom(sock, buf, sizeof(buf), 0,
1843                        (struct sockaddr *)&lladdr, &fromlen);
1844         if (len < 0) {
1845                 perror("recv");
1846                 return;
1847         }
1848
1849         if (have_ifidx(drv, lladdr.sll_ifindex))
1850                 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1851 }
1852
1853
1854 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1855 {
1856         struct i802_driver_data *drv = eloop_ctx;
1857         int len;
1858         unsigned char buf[3000];
1859         struct hostapd_data *hapd = drv->hapd;
1860         struct ieee80211_radiotap_iterator iter;
1861         int ret;
1862         struct hostapd_frame_info hfi;
1863         int injected = 0, failed = 0, msg_type, rxflags = 0;
1864
1865         len = recv(sock, buf, sizeof(buf), 0);
1866         if (len < 0) {
1867                 perror("recv");
1868                 return;
1869         }
1870
1871         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1872                 printf("received invalid radiotap frame\n");
1873                 return;
1874         }
1875
1876         memset(&hfi, 0, sizeof(hfi));
1877
1878         while (1) {
1879                 ret = ieee80211_radiotap_iterator_next(&iter);
1880                 if (ret == -ENOENT)
1881                         break;
1882                 if (ret) {
1883                         printf("received invalid radiotap frame (%d)\n", ret);
1884                         return;
1885                 }
1886                 switch (iter.this_arg_index) {
1887                 case IEEE80211_RADIOTAP_FLAGS:
1888                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1889                                 len -= 4;
1890                         break;
1891                 case IEEE80211_RADIOTAP_RX_FLAGS:
1892                         rxflags = 1;
1893                         break;
1894                 case IEEE80211_RADIOTAP_TX_FLAGS:
1895                         injected = 1;
1896                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1897                                         IEEE80211_RADIOTAP_F_TX_FAIL;
1898                         break;
1899                 case IEEE80211_RADIOTAP_DATA_RETRIES:
1900                         break;
1901                 case IEEE80211_RADIOTAP_CHANNEL:
1902                         /* TODO convert from freq/flags to channel number
1903                         hfi.channel = XXX;
1904                         hfi.phytype = XXX;
1905                          */
1906                         break;
1907                 case IEEE80211_RADIOTAP_RATE:
1908                         hfi.datarate = *iter.this_arg * 5;
1909                         break;
1910                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1911                         hfi.ssi_signal = *iter.this_arg;
1912                         break;
1913                 }
1914         }
1915
1916         if (rxflags && injected)
1917                 return;
1918
1919         if (!injected)
1920                 msg_type = ieee80211_msg_normal;
1921         else if (failed)
1922                 msg_type = ieee80211_msg_tx_callback_fail;
1923         else
1924                 msg_type = ieee80211_msg_tx_callback_ack;
1925
1926         handle_frame(hapd->iface, buf + iter.max_length,
1927                      len - iter.max_length, &hfi, msg_type);
1928 }
1929
1930
1931 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
1932 {
1933         char buf[IFNAMSIZ];
1934         struct sockaddr_ll ll;
1935         int optval;
1936         socklen_t optlen;
1937
1938         snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
1939         buf[IFNAMSIZ - 1] = '\0';
1940
1941         drv->monitor_ifidx =
1942                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
1943
1944         if (drv->monitor_ifidx < 0)
1945                 return -1;
1946
1947         if (hostapd_set_iface_flags(drv, buf, 1))
1948                 goto error;
1949
1950         memset(&ll, 0, sizeof(ll));
1951         ll.sll_family = AF_PACKET;
1952         ll.sll_ifindex = drv->monitor_ifidx;
1953         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
1954         if (drv->monitor_sock < 0) {
1955                 perror("socket[PF_PACKET,SOCK_RAW]");
1956                 goto error;
1957         }
1958
1959         if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
1960                  sizeof(ll)) < 0) {
1961                 perror("monitor socket bind");
1962                 goto error;
1963         }
1964
1965         optlen = sizeof(optval);
1966         optval = 20;
1967         if (setsockopt
1968             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
1969                 perror("Failed to set socket priority");
1970                 goto error;
1971         }
1972
1973         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
1974                                      drv, NULL)) {
1975                 printf("Could not register monitor read socket\n");
1976                 goto error;
1977         }
1978
1979         return 0;
1980  error:
1981         nl80211_remove_iface(drv, drv->monitor_ifidx);
1982         return -1;
1983 }
1984
1985
1986 static int nl80211_set_master_mode(struct i802_driver_data *drv,
1987                                    const char *ifname)
1988 {
1989         struct nl_msg *msg;
1990         int ret = -ENOBUFS;
1991
1992         msg = nlmsg_alloc();
1993         if (!msg)
1994                 return -ENOMEM;
1995
1996         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1997                     0, NL80211_CMD_SET_INTERFACE, 0);
1998         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1999                     if_nametoindex(ifname));
2000         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
2001
2002         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2003         if (!ret)
2004                 return 0;
2005  nla_put_failure:
2006         wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
2007                    "mode.", ifname);
2008         return ret;
2009 }
2010
2011
2012 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
2013 {
2014         struct ifreq ifr;
2015         struct sockaddr_ll addr;
2016
2017         drv->ioctl_sock = -1;
2018
2019         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2020         if (drv->ioctl_sock < 0) {
2021                 perror("socket[PF_INET,SOCK_DGRAM]");
2022                 return -1;
2023         }
2024
2025         /* start listening for EAPOL on the default AP interface */
2026         add_ifidx(drv, if_nametoindex(drv->iface));
2027
2028         if (hostapd_set_iface_flags(drv, drv->iface, 0))
2029                 return -1;
2030
2031         if (bssid) {
2032                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2033                 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2034                 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2035
2036                 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2037                         perror("ioctl(SIOCSIFHWADDR)");
2038                         return -1;
2039                 }
2040         }
2041
2042         /*
2043          * initialise generic netlink and nl80211
2044          */
2045         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2046         if (!drv->nl_cb) {
2047                 printf("Failed to allocate netlink callbacks.\n");
2048                 return -1;
2049         }
2050
2051         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2052         if (!drv->nl_handle) {
2053                 printf("Failed to allocate netlink handle.\n");
2054                 return -1;
2055         }
2056
2057         if (genl_connect(drv->nl_handle)) {
2058                 printf("Failed to connect to generic netlink.\n");
2059                 return -1;
2060         }
2061
2062         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2063         if (!drv->nl_cache) {
2064                 printf("Failed to allocate generic netlink cache.\n");
2065                 return -1;
2066         }
2067
2068         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2069         if (!drv->nl80211) {
2070                 printf("nl80211 not found.\n");
2071                 return -1;
2072         }
2073
2074         /* Initialise a monitor interface */
2075         if (nl80211_create_monitor_interface(drv))
2076                 return -1;
2077
2078         if (nl80211_set_master_mode(drv, drv->iface))
2079                 goto fail1;
2080
2081         if (hostapd_set_iface_flags(drv, drv->iface, 1))
2082                 goto fail1;
2083
2084         memset(&addr, 0, sizeof(addr));
2085         addr.sll_family = AF_PACKET;
2086         addr.sll_ifindex = ifr.ifr_ifindex;
2087         wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2088                    addr.sll_ifindex);
2089
2090         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2091         if (drv->eapol_sock < 0) {
2092                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2093                 goto fail1;
2094         }
2095
2096         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2097         {
2098                 printf("Could not register read socket for eapol\n");
2099                 return -1;
2100         }
2101
2102         memset(&ifr, 0, sizeof(ifr));
2103         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2104         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2105                 perror("ioctl(SIOCGIFHWADDR)");
2106                 goto fail1;
2107         }
2108
2109         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2110                 printf("Invalid HW-addr family 0x%04x\n",
2111                        ifr.ifr_hwaddr.sa_family);
2112                 goto fail1;
2113         }
2114         memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2115
2116         return 0;
2117
2118 fail1:
2119         nl80211_remove_iface(drv, drv->monitor_ifidx);
2120         return -1;
2121 }
2122
2123
2124 static int i802_get_inact_sec(void *priv, const u8 *addr)
2125 {
2126         struct hostap_sta_driver_data data;
2127         int ret;
2128
2129         data.inactive_msec = (unsigned long) -1;
2130         ret = i802_read_sta_data(priv, &data, addr);
2131         if (ret || data.inactive_msec == (unsigned long) -1)
2132                 return -1;
2133         return data.inactive_msec / 1000;
2134 }
2135
2136
2137 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2138 {
2139 #if 0
2140         /* TODO */
2141 #endif
2142         return 0;
2143 }
2144
2145
2146 static void
2147 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2148                                        char *custom)
2149 {
2150         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2151
2152         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2153                 char *pos;
2154                 u8 addr[ETH_ALEN];
2155                 pos = strstr(custom, "addr=");
2156                 if (pos == NULL) {
2157                         wpa_printf(MSG_DEBUG,
2158                                    "MLME-MICHAELMICFAILURE.indication "
2159                                    "without sender address ignored");
2160                         return;
2161                 }
2162                 pos += 5;
2163                 if (hwaddr_aton(pos, addr) == 0) {
2164                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2165                 } else {
2166                         wpa_printf(MSG_DEBUG,
2167                                    "MLME-MICHAELMICFAILURE.indication "
2168                                    "with invalid MAC address");
2169                 }
2170         }
2171 }
2172
2173
2174 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2175                                             char *data, int len)
2176 {
2177         struct iw_event iwe_buf, *iwe = &iwe_buf;
2178         char *pos, *end, *custom, *buf;
2179
2180         pos = data;
2181         end = data + len;
2182
2183         while (pos + IW_EV_LCP_LEN <= end) {
2184                 /* Event data may be unaligned, so make a local, aligned copy
2185                  * before processing. */
2186                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2187                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2188                            iwe->cmd, iwe->len);
2189                 if (iwe->len <= IW_EV_LCP_LEN)
2190                         return;
2191
2192                 custom = pos + IW_EV_POINT_LEN;
2193                 if (drv->we_version > 18 &&
2194                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
2195                      iwe->cmd == IWEVCUSTOM)) {
2196                         /* WE-19 removed the pointer from struct iw_point */
2197                         char *dpos = (char *) &iwe_buf.u.data.length;
2198                         int dlen = dpos - (char *) &iwe_buf;
2199                         memcpy(dpos, pos + IW_EV_LCP_LEN,
2200                                sizeof(struct iw_event) - dlen);
2201                 } else {
2202                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2203                         custom += IW_EV_POINT_OFF;
2204                 }
2205
2206                 switch (iwe->cmd) {
2207                 case IWEVCUSTOM:
2208                         if (custom + iwe->u.data.length > end)
2209                                 return;
2210                         buf = malloc(iwe->u.data.length + 1);
2211                         if (buf == NULL)
2212                                 return;
2213                         memcpy(buf, custom, iwe->u.data.length);
2214                         buf[iwe->u.data.length] = '\0';
2215                         hostapd_wireless_event_wireless_custom(drv, buf);
2216                         free(buf);
2217                         break;
2218                 }
2219
2220                 pos += iwe->len;
2221         }
2222 }
2223
2224
2225 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2226                                                struct nlmsghdr *h, int len)
2227 {
2228         struct ifinfomsg *ifi;
2229         int attrlen, nlmsg_len, rta_len;
2230         struct rtattr *attr;
2231
2232         if (len < (int) sizeof(*ifi))
2233                 return;
2234
2235         ifi = NLMSG_DATA(h);
2236
2237         /* TODO: use ifi->ifi_index to filter out wireless events from other
2238          * interfaces */
2239
2240         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2241
2242         attrlen = h->nlmsg_len - nlmsg_len;
2243         if (attrlen < 0)
2244                 return;
2245
2246         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
2247
2248         rta_len = RTA_ALIGN(sizeof(struct rtattr));
2249         while (RTA_OK(attr, attrlen)) {
2250                 if (attr->rta_type == IFLA_WIRELESS) {
2251                         hostapd_wireless_event_wireless(
2252                                 drv, ((char *) attr) + rta_len,
2253                                 attr->rta_len - rta_len);
2254                 }
2255                 attr = RTA_NEXT(attr, attrlen);
2256         }
2257 }
2258
2259
2260 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2261                                            void *sock_ctx)
2262 {
2263         char buf[256];
2264         int left;
2265         struct sockaddr_nl from;
2266         socklen_t fromlen;
2267         struct nlmsghdr *h;
2268         struct i802_driver_data *drv = eloop_ctx;
2269
2270         fromlen = sizeof(from);
2271         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2272                         (struct sockaddr *) &from, &fromlen);
2273         if (left < 0) {
2274                 if (errno != EINTR && errno != EAGAIN)
2275                         perror("recvfrom(netlink)");
2276                 return;
2277         }
2278
2279         h = (struct nlmsghdr *) buf;
2280         while (left >= (int) sizeof(*h)) {
2281                 int len, plen;
2282
2283                 len = h->nlmsg_len;
2284                 plen = len - sizeof(*h);
2285                 if (len > left || plen < 0) {
2286                         printf("Malformed netlink message: "
2287                                "len=%d left=%d plen=%d\n",
2288                                len, left, plen);
2289                         break;
2290                 }
2291
2292                 switch (h->nlmsg_type) {
2293                 case RTM_NEWLINK:
2294                         hostapd_wireless_event_rtm_newlink(drv, h, plen);
2295                         break;
2296                 }
2297
2298                 len = NLMSG_ALIGN(len);
2299                 left -= len;
2300                 h = (struct nlmsghdr *) ((char *) h + len);
2301         }
2302
2303         if (left > 0) {
2304                 printf("%d extra bytes in the end of netlink message\n", left);
2305         }
2306 }
2307
2308
2309 static int hostap_get_we_version(struct i802_driver_data *drv)
2310 {
2311         struct iw_range *range;
2312         struct iwreq iwr;
2313         int minlen;
2314         size_t buflen;
2315
2316         drv->we_version = 0;
2317
2318         /*
2319          * Use larger buffer than struct iw_range in order to allow the
2320          * structure to grow in the future.
2321          */
2322         buflen = sizeof(struct iw_range) + 500;
2323         range = os_zalloc(buflen);
2324         if (range == NULL)
2325                 return -1;
2326
2327         memset(&iwr, 0, sizeof(iwr));
2328         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2329         iwr.u.data.pointer = (caddr_t) range;
2330         iwr.u.data.length = buflen;
2331
2332         minlen = ((char *) &range->enc_capa) - (char *) range +
2333                 sizeof(range->enc_capa);
2334
2335         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2336                 perror("ioctl[SIOCGIWRANGE]");
2337                 free(range);
2338                 return -1;
2339         } else if (iwr.u.data.length >= minlen &&
2340                    range->we_version_compiled >= 18) {
2341                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2342                            "WE(source)=%d enc_capa=0x%x",
2343                            range->we_version_compiled,
2344                            range->we_version_source,
2345                            range->enc_capa);
2346                 drv->we_version = range->we_version_compiled;
2347         }
2348
2349         free(range);
2350         return 0;
2351 }
2352
2353
2354 static int i802_wireless_event_init(void *priv)
2355 {
2356         struct i802_driver_data *drv = priv;
2357         int s;
2358         struct sockaddr_nl local;
2359
2360         hostap_get_we_version(drv);
2361
2362         drv->wext_sock = -1;
2363
2364         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2365         if (s < 0) {
2366                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2367                 return -1;
2368         }
2369
2370         memset(&local, 0, sizeof(local));
2371         local.nl_family = AF_NETLINK;
2372         local.nl_groups = RTMGRP_LINK;
2373         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2374                 perror("bind(netlink)");
2375                 close(s);
2376                 return -1;
2377         }
2378
2379         eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2380                                  NULL);
2381         drv->wext_sock = s;
2382
2383         return 0;
2384 }
2385
2386
2387 static void i802_wireless_event_deinit(void *priv)
2388 {
2389         struct i802_driver_data *drv = priv;
2390         if (drv->wext_sock < 0)
2391                 return;
2392         eloop_unregister_read_sock(drv->wext_sock);
2393         close(drv->wext_sock);
2394 }
2395
2396
2397 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2398 {
2399         struct i802_driver_data *drv = priv;
2400         struct ieee80211_mgmt mgmt;
2401
2402         memset(&mgmt, 0, sizeof(mgmt));
2403         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2404                                           WLAN_FC_STYPE_DEAUTH);
2405         memcpy(mgmt.da, addr, ETH_ALEN);
2406         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2407         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2408         mgmt.u.deauth.reason_code = host_to_le16(reason);
2409         return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2410                                       sizeof(mgmt.u.deauth), 0);
2411 }
2412
2413
2414 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2415 {
2416         struct i802_driver_data *drv = priv;
2417         struct ieee80211_mgmt mgmt;
2418
2419         memset(&mgmt, 0, sizeof(mgmt));
2420         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2421                                           WLAN_FC_STYPE_DISASSOC);
2422         memcpy(mgmt.da, addr, ETH_ALEN);
2423         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2424         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2425         mgmt.u.disassoc.reason_code = host_to_le16(reason);
2426         return  i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2427                                        sizeof(mgmt.u.disassoc), 0);
2428 }
2429
2430
2431 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2432 {
2433         struct i802_driver_data *drv;
2434
2435         drv = os_zalloc(sizeof(struct i802_driver_data));
2436         if (drv == NULL) {
2437                 printf("Could not allocate memory for i802 driver data\n");
2438                 return NULL;
2439         }
2440
2441         drv->hapd = hapd;
2442         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2443
2444         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2445         drv->if_indices = drv->default_if_indices;
2446         drv->bridge = if_nametoindex(hapd->conf->bridge);
2447
2448         if (i802_init_sockets(drv, bssid))
2449                 goto failed;
2450
2451         return drv;
2452
2453 failed:
2454         free(drv);
2455         return NULL;
2456 }
2457
2458
2459 static void *i802_init(struct hostapd_data *hapd)
2460 {
2461         return i802_init_bssid(hapd, NULL);
2462 }
2463
2464
2465 static void i802_deinit(void *priv)
2466 {
2467         struct i802_driver_data *drv = priv;
2468
2469         if (drv->last_freq_ht) {
2470                 /* Clear HT flags from the driver */
2471                 struct hostapd_freq_params freq;
2472                 os_memset(&freq, 0, sizeof(freq));
2473                 freq.freq = drv->last_freq;
2474                 i802_set_freq2(priv, &freq);
2475         }
2476
2477         i802_del_beacon(drv);
2478
2479         /* remove monitor interface */
2480         nl80211_remove_iface(drv, drv->monitor_ifidx);
2481
2482         (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2483
2484         if (drv->monitor_sock >= 0) {
2485                 eloop_unregister_read_sock(drv->monitor_sock);
2486                 close(drv->monitor_sock);
2487         }
2488         if (drv->ioctl_sock >= 0)
2489                 close(drv->ioctl_sock);
2490         if (drv->eapol_sock >= 0) {
2491                 eloop_unregister_read_sock(drv->eapol_sock);
2492                 close(drv->eapol_sock);
2493         }
2494
2495         genl_family_put(drv->nl80211);
2496         nl_cache_free(drv->nl_cache);
2497         nl_handle_destroy(drv->nl_handle);
2498         nl_cb_put(drv->nl_cb);
2499
2500         if (drv->if_indices != drv->default_if_indices)
2501                 free(drv->if_indices);
2502
2503         free(drv);
2504 }
2505
2506
2507 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2508         .name = "nl80211",
2509         .init = i802_init,
2510         .init_bssid = i802_init_bssid,
2511         .deinit = i802_deinit,
2512         .wireless_event_init = i802_wireless_event_init,
2513         .wireless_event_deinit = i802_wireless_event_deinit,
2514         .set_ieee8021x = i802_set_ieee8021x,
2515         .set_privacy = i802_set_privacy,
2516         .set_encryption = i802_set_encryption,
2517         .get_seqnum = i802_get_seqnum,
2518         .flush = i802_flush,
2519         .read_sta_data = i802_read_sta_data,
2520         .send_eapol = i802_send_eapol,
2521         .sta_set_flags = i802_sta_set_flags,
2522         .sta_deauth = i802_sta_deauth,
2523         .sta_disassoc = i802_sta_disassoc,
2524         .sta_remove = i802_sta_remove,
2525         .send_mgmt_frame = i802_send_mgmt_frame,
2526         .sta_add2 = i802_sta_add2,
2527         .get_inact_sec = i802_get_inact_sec,
2528         .sta_clear_stats = i802_sta_clear_stats,
2529         .set_freq2 = i802_set_freq2,
2530         .set_rts = i802_set_rts,
2531         .get_rts = i802_get_rts,
2532         .set_frag = i802_set_frag,
2533         .get_frag = i802_get_frag,
2534         .set_retry = i802_set_retry,
2535         .get_retry = i802_get_retry,
2536         .set_rate_sets = i802_set_rate_sets,
2537         .set_regulatory_domain = i802_set_regulatory_domain,
2538         .set_beacon = i802_set_beacon,
2539         .set_internal_bridge = i802_set_internal_bridge,
2540         .set_beacon_int = i802_set_beacon_int,
2541         .set_dtim_period = i802_set_dtim_period,
2542         .set_cts_protect = i802_set_cts_protect,
2543         .set_preamble = i802_set_preamble,
2544         .set_short_slot_time = i802_set_short_slot_time,
2545         .set_tx_queue_params = i802_set_tx_queue_params,
2546         .bss_add = i802_bss_add,
2547         .bss_remove = i802_bss_remove,
2548         .if_add = i802_if_add,
2549         .if_update = i802_if_update,
2550         .if_remove = i802_if_remove,
2551         .get_hw_feature_data = i802_get_hw_feature_data,
2552         .set_sta_vlan = i802_set_sta_vlan,
2553         .set_country = i802_set_country,
2554 };