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

   1 /*
   2  * hostapd / Kernel driver communication via nl80211
   3  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Alternatively, this software may be distributed under the terms of BSD
  13  * license.
  14  *
  15  * See README and COPYING for more details.
  16  */
  17
  18 #include "includes.h"
  19
  20 #include <sys/ioctl.h>
  21 #include <netlink/genl/genl.h>
  22 #include <netlink/genl/family.h>
  23 #include <netlink/genl/ctrl.h>
  24 #include <netlink/msg.h>
  25 #include <netlink/attr.h>
  26 #include "nl80211_copy.h"
  27 #include <net/if.h>
  28 #include <netpacket/packet.h>
  29 #include "wireless_copy.h"
  30 #include <net/if_arp.h>
  31
  32 #include "hostapd.h"
  33 #include "driver.h"
  34 #include "ieee802_1x.h"
  35 #include "eloop.h"
  36 #include "ieee802_11.h"
  37 #include "sta_info.h"
  38 #include "hw_features.h"
  39 #include "mlme.h"
  40 #include "radiotap.h"
  41 #include "radiotap_iter.h"
  42
  43 #ifdef CONFIG_LIBNL20
  44 /* libnl 2.0 compatibility code */
  45 #define nl_handle_alloc_cb nl_socket_alloc_cb
  46 #define nl_handle_destroy nl_socket_free
  47 #endif /* CONFIG_LIBNL20 */
  48
  49 enum ieee80211_msg_type {
  50         ieee80211_msg_normal = 0,
  51         ieee80211_msg_tx_callback_ack = 1,
  52         ieee80211_msg_tx_callback_fail = 2,
  53 };
  54
  55 struct i802_driver_data {
  56         struct hostapd_data *hapd;
  57
  58         char iface[IFNAMSIZ + 1];
  59         int bridge;
  60         int ioctl_sock; /* socket for ioctl() use */
  61         int wext_sock; /* socket for wireless events */
  62         int eapol_sock; /* socket for EAPOL frames */
  63         int monitor_sock; /* socket for monitor */
  64         int monitor_ifidx;
  65
  66         int default_if_indices[16];
  67         int *if_indices;
  68         int num_if_indices;
  69
  70         int we_version;
  71         struct nl_handle *nl_handle;
  72         struct nl_cache *nl_cache;
  73         struct nl_cb *nl_cb;
  74         struct genl_family *nl80211;
  75         int dtim_period, beacon_int;
  76         unsigned int beacon_set:1;
  77         unsigned int ieee802_1x_active:1;
  78
  79         int last_freq;
  80         int last_freq_ht;
  81 };
  82
  83
  84 static int i802_sta_deauth(void *priv, const u8 *addr, int reason);
  85 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason);
  86
  87
  88 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
  89 {
  90         int i;
  91         int *old;
  92
  93         for (i = 0; i < drv->num_if_indices; i++) {
  94                 if (drv->if_indices[i] == 0) {
  95                         drv->if_indices[i] = ifidx;
  96                         return;
  97                 }
  98         }
  99
 100         if (drv->if_indices != drv->default_if_indices)
 101                 old = drv->if_indices;
 102         else
 103                 old = NULL;
 104
 105         drv->if_indices = realloc(old,
 106                                   sizeof(int) * (drv->num_if_indices + 1));
 107         if (!drv->if_indices) {
 108                 if (!old)
 109                         drv->if_indices = drv->default_if_indices;
 110                 else
 111                         drv->if_indices = old;
 112                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
 113                            "interfaces");
 114                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
 115                 return;
 116         }
 117         drv->if_indices[drv->num_if_indices] = ifidx;
 118         drv->num_if_indices++;
 119 }
 120
 121
 122 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
 123 {
 124         int i;
 125
 126         for (i = 0; i < drv->num_if_indices; i++) {
 127                 if (drv->if_indices[i] == ifidx) {
 128                         drv->if_indices[i] = 0;
 129                         break;
 130                 }
 131         }
 132 }
 133
 134
 135 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
 136 {
 137         int i;
 138
 139         if (ifidx == drv->bridge)
 140                 return 1;
 141
 142         for (i = 0; i < drv->num_if_indices; i++)
 143                 if (drv->if_indices[i] == ifidx)
 144                         return 1;
 145
 146         return 0;
 147 }
 148
 149
 150 /* nl80211 code */
 151 static int ack_handler(struct nl_msg *msg, void *arg)
 152 {
 153         int *err = arg;
 154         *err = 0;
 155         return NL_STOP;
 156 }
 157
 158 static int finish_handler(struct nl_msg *msg, void *arg)
 159 {
 160         int *ret = arg;
 161         *ret = 0;
 162         return NL_SKIP;
 163 }
 164
 165 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 166                          void *arg)
 167 {
 168         int *ret = arg;
 169         *ret = err->error;
 170         return NL_SKIP;
 171 }
 172
 173 static int send_and_recv_msgs(struct i802_driver_data *drv,
 174                               struct nl_msg *msg,
 175                               int (*valid_handler)(struct nl_msg *, void *),
 176                               void *valid_data)
 177 {
 178         struct nl_cb *cb;
 179         int err = -ENOMEM;
 180
 181         cb = nl_cb_clone(drv->nl_cb);
 182         if (!cb)
 183                 goto out;
 184
 185         err = nl_send_auto_complete(drv->nl_handle, msg);
 186         if (err < 0)
 187                 goto out;
 188
 189         err = 1;
 190
 191         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 192         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 193         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 194
 195         if (valid_handler)
 196                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 197                           valid_handler, valid_data);
 198
 199         while (err > 0)
 200                 nl_recvmsgs(drv->nl_handle, cb);
 201  out:
 202         nl_cb_put(cb);
 203         nlmsg_free(msg);
 204         return err;
 205 }
 206
 207 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
 208                                    const char *ifname, int dev_up)
 209 {
 210         struct ifreq ifr;
 211
 212         if (drv->ioctl_sock < 0)
 213                 return -1;
 214
 215         memset(&ifr, 0, sizeof(ifr));
 216         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 217
 218         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 219                 perror("ioctl[SIOCGIFFLAGS]");
 220                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 221                            drv->iface);
 222                 return -1;
 223         }
 224
 225         if (dev_up)
 226                 ifr.ifr_flags |= IFF_UP;
 227         else
 228                 ifr.ifr_flags &= ~IFF_UP;
 229
 230         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 231                 perror("ioctl[SIOCSIFFLAGS]");
 232                 return -1;
 233         }
 234
 235         return 0;
 236 }
 237
 238
 239 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
 240                        const char *alg, const u8 *addr, int idx, const u8 *key,
 241                        size_t key_len, int txkey)
 242 {
 243         struct nl_msg *msg;
 244         int ret;
 245
 246         msg = nlmsg_alloc();
 247         if (!msg)
 248                 return -ENOMEM;
 249
 250         if (strcmp(alg, "none") == 0) {
 251                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 252                             0, NL80211_CMD_DEL_KEY, 0);
 253         } else {
 254                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 255                             0, NL80211_CMD_NEW_KEY, 0);
 256                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
 257                 if (strcmp(alg, "WEP") == 0) {
 258                         if (key_len == 5)
 259                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 260                                             0x000FAC01);
 261                         else
 262                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 263                                             0x000FAC05);
 264                 } else if (strcmp(alg, "TKIP") == 0)
 265                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
 266                 else if (strcmp(alg, "CCMP") == 0)
 267                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
 268                 else if (strcmp(alg, "IGTK") == 0)
 269                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
 270                 else {
 271                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
 272                                    "algorithm '%s'", __func__, alg);
 273                         nlmsg_free(msg);
 274                         return -1;
 275                 }
 276         }
 277
 278         if (addr)
 279                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 280         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 281         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 282
 283         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 284         if (ret == -ENOENT)
 285                 ret = 0;
 286
 287         /*
 288          * If we failed or don't need to set the default TX key (below),
 289          * we're done here.
 290          */
 291         if (ret || !txkey || addr)
 292                 return ret;
 293
 294         msg = nlmsg_alloc();
 295         if (!msg)
 296                 return -ENOMEM;
 297
 298         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 299                     0, NL80211_CMD_SET_KEY, 0);
 300         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 301         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 302         if (strcmp(alg, "IGTK") == 0)
 303                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
 304         else
 305                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 306
 307         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 308         if (ret == -ENOENT)
 309                 ret = 0;
 310         return ret;
 311  nla_put_failure:
 312         return -ENOBUFS;
 313 }
 314
 315
 316 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
 317                                const u8 *addr, int idx, const u8 *key,
 318                                size_t key_len, int txkey)
 319 {
 320         struct i802_driver_data *drv = priv;
 321         int ret;
 322
 323         ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
 324                           key_len, txkey);
 325         if (ret < 0)
 326                 return ret;
 327
 328         return ret;
 329 }
 330
 331
 332 static inline int min_int(int a, int b)
 333 {
 334         if (a < b)
 335                 return a;
 336         return b;
 337 }
 338
 339
 340 static int get_key_handler(struct nl_msg *msg, void *arg)
 341 {
 342         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 343         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 344
 345         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 346                   genlmsg_attrlen(gnlh, 0), NULL);
 347
 348         /*
 349          * TODO: validate the key index and mac address!
 350          * Otherwise, there's a race condition as soon as
 351          * the kernel starts sending key notifications.
 352          */
 353
 354         if (tb[NL80211_ATTR_KEY_SEQ])
 355                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 356                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
 357         return NL_SKIP;
 358 }
 359
 360
 361 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
 362                            int idx, u8 *seq)
 363 {
 364         struct i802_driver_data *drv = priv;
 365         struct nl_msg *msg;
 366
 367         msg = nlmsg_alloc();
 368         if (!msg)
 369                 return -ENOMEM;
 370
 371         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 372                     0, NL80211_CMD_GET_KEY, 0);
 373
 374         if (addr)
 375                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 376         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 377         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
 378
 379         memset(seq, 0, 6);
 380
 381         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
 382  nla_put_failure:
 383         return -ENOBUFS;
 384 }
 385
 386
 387 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
 388                               int mode)
 389 {
 390         struct i802_driver_data *drv = priv;
 391         struct nl_msg *msg;
 392         u8 rates[NL80211_MAX_SUPP_RATES];
 393         u8 rates_len = 0;
 394         int i;
 395
 396         msg = nlmsg_alloc();
 397         if (!msg)
 398                 return -ENOMEM;
 399
 400         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 401                     NL80211_CMD_SET_BSS, 0);
 402
 403         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
 404                 rates[rates_len++] = basic_rates[i] / 5;
 405
 406         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
 407
 408         /* TODO: multi-BSS support */
 409         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 410
 411         return send_and_recv_msgs(drv, msg, NULL, NULL);
 412  nla_put_failure:
 413         return -ENOBUFS;
 414 }
 415
 416
 417 static int i802_send_frame(void *priv, const void *data, size_t len,
 418                            int encrypt, int flags)
 419 {
 420         __u8 rtap_hdr[] = {
 421                 0x00, 0x00, /* radiotap version */
 422                 0x0e, 0x00, /* radiotap length */
 423                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
 424                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
 425                 0x00,       /* padding */
 426                 0x00, 0x00, /* RX and TX flags to indicate that */
 427                 0x00, 0x00, /* this is the injected frame directly */
 428         };
 429         struct i802_driver_data *drv = priv;
 430         struct iovec iov[2] = {
 431                 {
 432                         .iov_base = &rtap_hdr,
 433                         .iov_len = sizeof(rtap_hdr),
 434                 },
 435                 {
 436                         .iov_base = (void*)data,
 437                         .iov_len = len,
 438                 }
 439         };
 440         struct msghdr msg = {
 441                 .msg_name = NULL,
 442                 .msg_namelen = 0,
 443                 .msg_iov = iov,
 444                 .msg_iovlen = 2,
 445                 .msg_control = NULL,
 446                 .msg_controllen = 0,
 447                 .msg_flags = 0,
 448         };
 449
 450         if (encrypt)
 451                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
 452
 453         return sendmsg(drv->monitor_sock, &msg, flags);
 454 }
 455
 456 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
 457                                 int flags)
 458 {
 459         struct ieee80211_mgmt *mgmt;
 460         int do_not_encrypt = 0;
 461         u16 fc;
 462
 463         mgmt = (struct ieee80211_mgmt *) data;
 464         fc = le_to_host16(mgmt->frame_control);
 465
 466         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
 467             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
 468                 /*
 469                  * Only one of the authentication frame types is encrypted.
 470                  * In order for static WEP encryption to work properly (i.e.,
 471                  * to not encrypt the frame), we need to tell mac80211 about
 472                  * the frames that must not be encrypted.
 473                  */
 474                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 475                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
 476                 if (auth_alg == WLAN_AUTH_OPEN ||
 477                     (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
 478                         do_not_encrypt = 1;
 479         }
 480
 481         return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
 482 }
 483
 484 /* Set kernel driver on given frequency (MHz) */
 485 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
 486 {
 487         struct i802_driver_data *drv = priv;
 488         struct nl_msg *msg;
 489
 490         msg = nlmsg_alloc();
 491         if (!msg)
 492                 return -1;
 493
 494         drv->last_freq = freq->freq;
 495         drv->last_freq_ht = freq->ht_enabled;
 496
 497         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 498                     NL80211_CMD_SET_WIPHY, 0);
 499
 500         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 501         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
 502         if (freq->ht_enabled) {
 503                 switch (freq->sec_channel_offset) {
 504                 case -1:
 505                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 506                                     NL80211_CHAN_HT40MINUS);
 507                         break;
 508                 case 1:
 509                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 510                                     NL80211_CHAN_HT40PLUS);
 511                         break;
 512                 default:
 513                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 514                                     NL80211_CHAN_HT20);
 515                         break;
 516                 }
 517         }
 518
 519         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 520                 return 0;
 521  nla_put_failure:
 522         return -1;
 523 }
 524
 525
 526 static int i802_set_rts(void *priv, int rts)
 527 {
 528         struct i802_driver_data *drv = priv;
 529         struct iwreq iwr;
 530
 531         memset(&iwr, 0, sizeof(iwr));
 532         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 533         iwr.u.rts.value = rts;
 534         iwr.u.rts.fixed = 1;
 535
 536         if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
 537                 perror("ioctl[SIOCSIWRTS]");
 538                 return -1;
 539         }
 540
 541         return 0;
 542 }
 543
 544
 545 static int i802_get_rts(void *priv, int *rts)
 546 {
 547         struct i802_driver_data *drv = priv;
 548         struct iwreq iwr;
 549
 550         memset(&iwr, 0, sizeof(iwr));
 551         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 552
 553         if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
 554                 perror("ioctl[SIOCGIWRTS]");
 555                 return -1;
 556         }
 557
 558         *rts = iwr.u.rts.value;
 559
 560         return 0;
 561 }
 562
 563
 564 static int i802_set_frag(void *priv, int frag)
 565 {
 566         struct i802_driver_data *drv = priv;
 567         struct iwreq iwr;
 568
 569         memset(&iwr, 0, sizeof(iwr));
 570         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 571         iwr.u.frag.value = frag;
 572         iwr.u.frag.fixed = 1;
 573
 574         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 575                 perror("ioctl[SIOCSIWFRAG]");
 576                 return -1;
 577         }
 578
 579         return 0;
 580 }
 581
 582
 583 static int i802_get_frag(void *priv, int *frag)
 584 {
 585         struct i802_driver_data *drv = priv;
 586         struct iwreq iwr;
 587
 588         memset(&iwr, 0, sizeof(iwr));
 589         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 590
 591         if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
 592                 perror("ioctl[SIOCGIWFRAG]");
 593                 return -1;
 594         }
 595
 596         *frag = iwr.u.frag.value;
 597
 598         return 0;
 599 }
 600
 601
 602 static int i802_set_retry(void *priv, int short_retry, int long_retry)
 603 {
 604         struct i802_driver_data *drv = priv;
 605         struct iwreq iwr;
 606
 607         memset(&iwr, 0, sizeof(iwr));
 608         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 609
 610         iwr.u.retry.value = short_retry;
 611         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 612         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 613                 perror("ioctl[SIOCSIWRETRY(short)]");
 614                 return -1;
 615         }
 616
 617         iwr.u.retry.value = long_retry;
 618         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 619         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 620                 perror("ioctl[SIOCSIWRETRY(long)]");
 621                 return -1;
 622         }
 623
 624         return 0;
 625 }
 626
 627
 628 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
 629 {
 630         struct i802_driver_data *drv = priv;
 631         struct iwreq iwr;
 632
 633         memset(&iwr, 0, sizeof(iwr));
 634         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 635
 636         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 637         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 638                 perror("ioctl[SIOCGIWFRAG(short)]");
 639                 return -1;
 640         }
 641         *short_retry = iwr.u.retry.value;
 642
 643         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 644         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 645                 perror("ioctl[SIOCGIWFRAG(long)]");
 646                 return -1;
 647         }
 648         *long_retry = iwr.u.retry.value;
 649
 650         return 0;
 651 }
 652
 653
 654 static int i802_flush(void *priv)
 655 {
 656         struct i802_driver_data *drv = priv;
 657         struct nl_msg *msg;
 658
 659         msg = nlmsg_alloc();
 660         if (!msg)
 661                 return -1;
 662
 663         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 664                     0, NL80211_CMD_DEL_STATION, 0);
 665
 666         /*
 667          * XXX: FIX! this needs to flush all VLANs too
 668          */
 669         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 670                     if_nametoindex(drv->iface));
 671
 672         return send_and_recv_msgs(drv, msg, NULL, NULL);
 673  nla_put_failure:
 674         return -ENOBUFS;
 675 }
 676
 677
 678 static int get_sta_handler(struct nl_msg *msg, void *arg)
 679 {
 680         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 681         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 682         struct hostap_sta_driver_data *data = arg;
 683         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
 684         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
 685                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
 686                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
 687                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
 688         };
 689
 690         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 691                   genlmsg_attrlen(gnlh, 0), NULL);
 692
 693         /*
 694          * TODO: validate the interface and mac address!
 695          * Otherwise, there's a race condition as soon as
 696          * the kernel starts sending station notifications.
 697          */
 698
 699         if (!tb[NL80211_ATTR_STA_INFO]) {
 700                 wpa_printf(MSG_DEBUG, "sta stats missing!");
 701                 return NL_SKIP;
 702         }
 703         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
 704                              tb[NL80211_ATTR_STA_INFO],
 705                              stats_policy)) {
 706                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
 707                 return NL_SKIP;
 708         }
 709
 710         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
 711                 data->inactive_msec =
 712                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
 713         if (stats[NL80211_STA_INFO_RX_BYTES])
 714                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
 715         if (stats[NL80211_STA_INFO_TX_BYTES])
 716                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
 717
 718         return NL_SKIP;
 719 }
 720
 721 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
 722                               const u8 *addr)
 723 {
 724         struct i802_driver_data *drv = priv;
 725         struct nl_msg *msg;
 726
 727         msg = nlmsg_alloc();
 728         if (!msg)
 729                 return -ENOMEM;
 730
 731         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 732                     0, NL80211_CMD_GET_STATION, 0);
 733
 734         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 735         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 736
 737         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
 738  nla_put_failure:
 739         return -ENOBUFS;
 740 }
 741
 742
 743 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
 744                            size_t data_len, int encrypt, const u8 *own_addr)
 745 {
 746         struct i802_driver_data *drv = priv;
 747         struct ieee80211_hdr *hdr;
 748         size_t len;
 749         u8 *pos;
 750         int res;
 751 #if 0 /* FIX */
 752         int qos = sta->flags & WLAN_STA_WME;
 753 #else
 754         int qos = 0;
 755 #endif
 756
 757         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
 758                 data_len;
 759         hdr = os_zalloc(len);
 760         if (hdr == NULL) {
 761                 printf("malloc() failed for i802_send_data(len=%lu)\n",
 762                        (unsigned long) len);
 763                 return -1;
 764         }
 765
 766         hdr->frame_control =
 767                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
 768         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
 769         if (encrypt)
 770                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 771 #if 0 /* To be enabled if qos determination is added above */
 772         if (qos) {
 773                 hdr->frame_control |=
 774                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
 775         }
 776 #endif
 777
 778         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
 779         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 780         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 781         pos = (u8 *) (hdr + 1);
 782
 783 #if 0 /* To be enabled if qos determination is added above */
 784         if (qos) {
 785                 /* add an empty QoS header if needed */
 786                 pos[0] = 0;
 787                 pos[1] = 0;
 788                 pos += 2;
 789         }
 790 #endif
 791
 792         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
 793         pos += sizeof(rfc1042_header);
 794         WPA_PUT_BE16(pos, ETH_P_PAE);
 795         pos += 2;
 796         memcpy(pos, data, data_len);
 797
 798         res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
 799         free(hdr);
 800
 801         if (res < 0) {
 802                 perror("i802_send_eapol: send");
 803                 printf("i802_send_eapol - packet len: %lu - failed\n",
 804                        (unsigned long) len);
 805         }
 806
 807         return res;
 808 }
 809
 810
 811 static int i802_sta_add2(const char *ifname, void *priv,
 812                          struct hostapd_sta_add_params *params)
 813 {
 814         struct i802_driver_data *drv = priv;
 815         struct nl_msg *msg;
 816         int ret = -ENOBUFS;
 817
 818         msg = nlmsg_alloc();
 819         if (!msg)
 820                 return -ENOMEM;
 821
 822         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 823                     0, NL80211_CMD_NEW_STATION, 0);
 824
 825         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 826                     if_nametoindex(drv->iface));
 827         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
 828         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
 829         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
 830                 params->supp_rates);
 831         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
 832                     params->listen_interval);
 833
 834 #ifdef CONFIG_IEEE80211N
 835         if (params->ht_capabilities) {
 836                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
 837                         params->ht_capabilities->length,
 838                         &params->ht_capabilities->data);
 839         }
 840 #endif /* CONFIG_IEEE80211N */
 841
 842         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 843         if (ret == -EEXIST)
 844                 ret = 0;
 845  nla_put_failure:
 846         return ret;
 847 }
 848
 849
 850 static int i802_sta_remove(void *priv, const u8 *addr)
 851 {
 852         struct i802_driver_data *drv = priv;
 853         struct nl_msg *msg;
 854         int ret;
 855
 856         msg = nlmsg_alloc();
 857         if (!msg)
 858                 return -ENOMEM;
 859
 860         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 861                     0, NL80211_CMD_DEL_STATION, 0);
 862
 863         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 864                     if_nametoindex(drv->iface));
 865         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 866
 867         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 868         if (ret == -ENOENT)
 869                 return 0;
 870         return ret;
 871  nla_put_failure:
 872         return -ENOBUFS;
 873 }
 874
 875
 876 static int i802_sta_set_flags(void *priv, const u8 *addr,
 877                               int total_flags, int flags_or, int flags_and)
 878 {
 879         struct i802_driver_data *drv = priv;
 880         struct nl_msg *msg, *flags = NULL;
 881
 882         msg = nlmsg_alloc();
 883         if (!msg)
 884                 return -ENOMEM;
 885
 886         flags = nlmsg_alloc();
 887         if (!flags) {
 888                 nlmsg_free(msg);
 889                 return -ENOMEM;
 890         }
 891
 892         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 893                     0, NL80211_CMD_SET_STATION, 0);
 894
 895         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 896                     if_nametoindex(drv->iface));
 897         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 898
 899         if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
 900                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
 901
 902         if (total_flags & WLAN_STA_WME)
 903                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
 904
 905         if (total_flags & WLAN_STA_SHORT_PREAMBLE)
 906                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
 907
 908         if (total_flags & WLAN_STA_MFP)
 909                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
 910
 911         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
 912                 goto nla_put_failure;
 913
 914         nlmsg_free(flags);
 915
 916         return send_and_recv_msgs(drv, msg, NULL, NULL);
 917  nla_put_failure:
 918         nlmsg_free(flags);
 919         return -ENOBUFS;
 920 }
 921
 922
 923 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
 924 {
 925         return -1;
 926 }
 927
 928
 929 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 930                                     int cw_min, int cw_max, int burst_time)
 931 {
 932         struct i802_driver_data *drv = priv;
 933         struct nl_msg *msg;
 934         struct nlattr *txq, *params;
 935
 936         msg = nlmsg_alloc();
 937         if (!msg)
 938                 return -1;
 939
 940         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 941                     0, NL80211_CMD_SET_WIPHY, 0);
 942
 943         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 944
 945         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
 946         if (!txq)
 947                 goto nla_put_failure;
 948
 949         /* We are only sending parameters for a single TXQ at a time */
 950         params = nla_nest_start(msg, 1);
 951         if (!params)
 952                 goto nla_put_failure;
 953
 954         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
 955         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
 956          * 32 usec, so need to convert the value here. */
 957         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
 958         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
 959         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
 960         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
 961
 962         nla_nest_end(msg, params);
 963
 964         nla_nest_end(msg, txq);
 965
 966         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 967                 return 0;
 968  nla_put_failure:
 969         return -1;
 970 }
 971
 972
 973 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
 974 {
 975         struct nl_msg *msg;
 976
 977         /* stop listening for EAPOL on this interface */
 978         del_ifidx(drv, ifidx);
 979
 980         msg = nlmsg_alloc();
 981         if (!msg)
 982                 goto nla_put_failure;
 983
 984         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 985                     0, NL80211_CMD_DEL_INTERFACE, 0);
 986         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
 987
 988         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 989                 return;
 990  nla_put_failure:
 991         printf("Failed to remove interface.\n");
 992 }
 993
 994
 995 static int nl80211_create_iface(struct i802_driver_data *drv,
 996                                 const char *ifname,
 997                                 enum nl80211_iftype iftype,
 998                                 const u8 *addr)
 999 {
1000         struct nl_msg *msg, *flags = NULL;
1001         int ifidx;
1002         struct ifreq ifreq;
1003         struct iwreq iwr;
1004         int ret = -ENOBUFS;
1005
1006         msg = nlmsg_alloc();
1007         if (!msg)
1008                 return -1;
1009
1010         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1011                     0, NL80211_CMD_NEW_INTERFACE, 0);
1012         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1013         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1014         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1015
1016         if (iftype == NL80211_IFTYPE_MONITOR) {
1017                 int err;
1018
1019                 flags = nlmsg_alloc();
1020                 if (!flags)
1021                         goto nla_put_failure;
1022
1023                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1024
1025                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1026
1027                 nlmsg_free(flags);
1028
1029                 if (err)
1030                         goto nla_put_failure;
1031         }
1032
1033         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1034         if (ret) {
1035  nla_put_failure:
1036                 printf("Failed to create interface %s.\n", ifname);
1037                 return ret;
1038         }
1039
1040         ifidx = if_nametoindex(ifname);
1041
1042         if (ifidx <= 0)
1043                 return -1;
1044
1045         /* start listening for EAPOL on this interface */
1046         add_ifidx(drv, ifidx);
1047
1048         if (addr) {
1049                 switch (iftype) {
1050                 case NL80211_IFTYPE_AP:
1051                         os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1052                         memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1053                         ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1054
1055                         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1056                                 nl80211_remove_iface(drv, ifidx);
1057                                 return -1;
1058                         }
1059                         break;
1060                 case NL80211_IFTYPE_WDS:
1061                         memset(&iwr, 0, sizeof(iwr));
1062                         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1063                         iwr.u.addr.sa_family = ARPHRD_ETHER;
1064                         memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1065                         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1066                                 return -1;
1067                         break;
1068                 default:
1069                         /* nothing */
1070                         break;
1071                 }
1072         }
1073
1074         return ifidx;
1075 }
1076
1077
1078 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1079 {
1080         int ifidx;
1081
1082         /*
1083          * The kernel supports that when the low-level driver does,
1084          * but we currently don't because we need per-BSS data that
1085          * currently we can't handle easily.
1086          */
1087         return -1;
1088
1089         ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1090         if (ifidx < 0)
1091                 return -1;
1092         if (hostapd_set_iface_flags(priv, ifname, 1)) {
1093                 nl80211_remove_iface(priv, ifidx);
1094                 return -1;
1095         }
1096         return 0;
1097 }
1098
1099
1100 static int i802_bss_remove(void *priv, const char *ifname)
1101 {
1102         nl80211_remove_iface(priv, if_nametoindex(ifname));
1103         return 0;
1104 }
1105
1106
1107 static int i802_set_beacon(const char *iface, void *priv,
1108                            u8 *head, size_t head_len,
1109                            u8 *tail, size_t tail_len)
1110 {
1111         struct i802_driver_data *drv = priv;
1112         struct nl_msg *msg;
1113         u8 cmd = NL80211_CMD_NEW_BEACON;
1114         int ret;
1115
1116         msg = nlmsg_alloc();
1117         if (!msg)
1118                 return -ENOMEM;
1119
1120         if (drv->beacon_set)
1121                 cmd = NL80211_CMD_SET_BEACON;
1122
1123         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1124                     0, cmd, 0);
1125         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1126         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1127         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1128         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1129
1130         if (!drv->dtim_period)
1131                 drv->dtim_period = 2;
1132         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1133
1134         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1135         if (!ret)
1136                 drv->beacon_set = 1;
1137         return ret;
1138  nla_put_failure:
1139         return -ENOBUFS;
1140 }
1141
1142
1143 static int i802_del_beacon(struct i802_driver_data *drv)
1144 {
1145         struct nl_msg *msg;
1146
1147         msg = nlmsg_alloc();
1148         if (!msg)
1149                 return -ENOMEM;
1150
1151         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1152                     0, NL80211_CMD_DEL_BEACON, 0);
1153         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1154
1155         return send_and_recv_msgs(drv, msg, NULL, NULL);
1156  nla_put_failure:
1157         return -ENOBUFS;
1158 }
1159
1160
1161 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1162 {
1163         struct i802_driver_data *drv = priv;
1164
1165         /*
1166          * FIXME: This needs to be per interface (BSS)
1167          */
1168         drv->ieee802_1x_active = enabled;
1169         return 0;
1170 }
1171
1172
1173 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1174 {
1175         struct i802_driver_data *drv = priv;
1176         struct iwreq iwr;
1177
1178         memset(&iwr, 0, sizeof(iwr));
1179
1180         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1181         iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1182         iwr.u.param.value = enabled;
1183
1184         ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1185
1186         /* ignore errors, the kernel/driver might not care */
1187         return 0;
1188 }
1189
1190
1191 static int i802_set_internal_bridge(void *priv, int value)
1192 {
1193         return -1;
1194 }
1195
1196
1197 static int i802_set_beacon_int(void *priv, int value)
1198 {
1199         struct i802_driver_data *drv = priv;
1200         struct nl_msg *msg;
1201
1202         drv->beacon_int = value;
1203
1204         if (!drv->beacon_set)
1205                 return 0;
1206
1207         msg = nlmsg_alloc();
1208         if (!msg)
1209                 return -ENOMEM;
1210
1211         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1212                     0, NL80211_CMD_SET_BEACON, 0);
1213         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1214
1215         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1216
1217         return send_and_recv_msgs(drv, msg, NULL, NULL);
1218  nla_put_failure:
1219         return -ENOBUFS;
1220 }
1221
1222
1223 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1224 {
1225         struct i802_driver_data *drv = priv;
1226         struct nl_msg *msg;
1227
1228         msg = nlmsg_alloc();
1229         if (!msg)
1230                 return -ENOMEM;
1231
1232         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1233                     0, NL80211_CMD_SET_BEACON, 0);
1234         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1235
1236         drv->dtim_period = value;
1237         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1238
1239         return send_and_recv_msgs(drv, msg, NULL, NULL);
1240  nla_put_failure:
1241         return -ENOBUFS;
1242 }
1243
1244
1245 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1246 {
1247         struct i802_driver_data *drv = priv;
1248         struct nl_msg *msg;
1249
1250         msg = nlmsg_alloc();
1251         if (!msg)
1252                 return -ENOMEM;
1253
1254         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1255                     NL80211_CMD_SET_BSS, 0);
1256
1257         if (cts >= 0)
1258                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1259         if (preamble >= 0)
1260                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1261         if (slot >= 0)
1262                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1263
1264         /* TODO: multi-BSS support */
1265         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1266
1267         return send_and_recv_msgs(drv, msg, NULL, NULL);
1268  nla_put_failure:
1269         return -ENOBUFS;
1270 }
1271
1272
1273 static int i802_set_cts_protect(void *priv, int value)
1274 {
1275         return i802_set_bss(priv, value, -1, -1);
1276 }
1277
1278
1279 static int i802_set_preamble(void *priv, int value)
1280 {
1281         return i802_set_bss(priv, -1, value, -1);
1282 }
1283
1284
1285 static int i802_set_short_slot_time(void *priv, int value)
1286 {
1287         return i802_set_bss(priv, -1, -1, value);
1288 }
1289
1290
1291 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1292 {
1293         switch (type) {
1294         case HOSTAPD_IF_VLAN:
1295                 return NL80211_IFTYPE_AP_VLAN;
1296         case HOSTAPD_IF_WDS:
1297                 return NL80211_IFTYPE_WDS;
1298         }
1299         return -1;
1300 }
1301
1302
1303 static int i802_if_add(const char *iface, void *priv,
1304                        enum hostapd_driver_if_type type, char *ifname,
1305                        const u8 *addr)
1306 {
1307         if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1308                 return -1;
1309         return 0;
1310 }
1311
1312
1313 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1314                           char *ifname, const u8 *addr)
1315 {
1316         /* unused at the moment */
1317         return -1;
1318 }
1319
1320
1321 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1322                           const char *ifname, const u8 *addr)
1323 {
1324         nl80211_remove_iface(priv, if_nametoindex(ifname));
1325         return 0;
1326 }
1327
1328
1329 struct phy_info_arg {
1330         u16 *num_modes;
1331         struct hostapd_hw_modes *modes;
1332 };
1333
1334 static int phy_info_handler(struct nl_msg *msg, void *arg)
1335 {
1336         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1337         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1338         struct phy_info_arg *phy_info = arg;
1339
1340         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1341
1342         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1343         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1344                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1345                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1346                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1347                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1348                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1349                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1350         };
1351
1352         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1353         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1354                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1355                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1356         };
1357
1358         struct nlattr *nl_band;
1359         struct nlattr *nl_freq;
1360         struct nlattr *nl_rate;
1361         int rem_band, rem_freq, rem_rate;
1362         struct hostapd_hw_modes *mode;
1363         int idx, mode_is_set;
1364
1365         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1366                   genlmsg_attrlen(gnlh, 0), NULL);
1367
1368         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1369                 return NL_SKIP;
1370
1371         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1372                 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1373                 if (!mode)
1374                         return NL_SKIP;
1375                 phy_info->modes = mode;
1376
1377                 mode_is_set = 0;
1378
1379                 mode = &phy_info->modes[*(phy_info->num_modes)];
1380                 memset(mode, 0, sizeof(*mode));
1381                 *(phy_info->num_modes) += 1;
1382
1383                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1384                           nla_len(nl_band), NULL);
1385
1386                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1387                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1388                                   nla_len(nl_freq), freq_policy);
1389                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1390                                 continue;
1391                         mode->num_channels++;
1392                 }
1393
1394                 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1395                 if (!mode->channels)
1396                         return NL_SKIP;
1397
1398                 idx = 0;
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
1406                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1407                         mode->channels[idx].flag = 0;
1408
1409                         if (!mode_is_set) {
1410                                 /* crude heuristic */
1411                                 if (mode->channels[idx].freq < 4000)
1412                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
1413                                 else
1414                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
1415                                 mode_is_set = 1;
1416                         }
1417
1418                         /* crude heuristic */
1419                         if (mode->channels[idx].freq < 4000)
1420                                 if (mode->channels[idx].freq == 2848)
1421                                         mode->channels[idx].chan = 14;
1422                                 else
1423                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1424                         else
1425                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1426
1427                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1428                                 mode->channels[idx].flag |=
1429                                         HOSTAPD_CHAN_DISABLED;
1430                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1431                                 mode->channels[idx].flag |=
1432                                         HOSTAPD_CHAN_PASSIVE_SCAN;
1433                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1434                                 mode->channels[idx].flag |=
1435                                         HOSTAPD_CHAN_NO_IBSS;
1436                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1437                                 mode->channels[idx].flag |=
1438                                         HOSTAPD_CHAN_RADAR;
1439
1440                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1441                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1442                                 mode->channels[idx].max_tx_power =
1443                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1444
1445                         idx++;
1446                 }
1447
1448                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1449                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1450                                   nla_len(nl_rate), rate_policy);
1451                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1452                                 continue;
1453                         mode->num_rates++;
1454                 }
1455
1456                 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1457                 if (!mode->rates)
1458                         return NL_SKIP;
1459
1460                 idx = 0;
1461
1462                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1463                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1464                                   nla_len(nl_rate), rate_policy);
1465                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1466                                 continue;
1467                         mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1468
1469                         /* crude heuristic */
1470                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1471                             mode->rates[idx].rate > 200)
1472                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
1473
1474                         if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1475                                 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1476
1477                         idx++;
1478                 }
1479         }
1480
1481         return NL_SKIP;
1482 }
1483
1484 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1485                                              u16 *num_modes)
1486 {
1487         u16 m;
1488         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1489         int i, mode11g_idx = -1;
1490
1491         /* If only 802.11g mode is included, use it to construct matching
1492          * 802.11b mode data. */
1493
1494         for (m = 0; m < *num_modes; m++) {
1495                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1496                         return modes; /* 802.11b already included */
1497                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1498                         mode11g_idx = m;
1499         }
1500
1501         if (mode11g_idx < 0)
1502                 return modes; /* 2.4 GHz band not supported at all */
1503
1504         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1505         if (nmodes == NULL)
1506                 return modes; /* Could not add 802.11b mode */
1507
1508         mode = &nmodes[*num_modes];
1509         os_memset(mode, 0, sizeof(*mode));
1510         (*num_modes)++;
1511         modes = nmodes;
1512
1513         mode->mode = HOSTAPD_MODE_IEEE80211B;
1514
1515         mode11g = &modes[mode11g_idx];
1516         mode->num_channels = mode11g->num_channels;
1517         mode->channels = os_malloc(mode11g->num_channels *
1518                                    sizeof(struct hostapd_channel_data));
1519         if (mode->channels == NULL) {
1520                 (*num_modes)--;
1521                 return modes; /* Could not add 802.11b mode */
1522         }
1523         os_memcpy(mode->channels, mode11g->channels,
1524                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1525
1526         mode->num_rates = 0;
1527         mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1528         if (mode->rates == NULL) {
1529                 os_free(mode->channels);
1530                 (*num_modes)--;
1531                 return modes; /* Could not add 802.11b mode */
1532         }
1533
1534         for (i = 0; i < mode11g->num_rates; i++) {
1535                 if (mode11g->rates[i].rate > 110 ||
1536                     mode11g->rates[i].flags &
1537                     (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1538                         continue;
1539                 mode->rates[mode->num_rates] = mode11g->rates[i];
1540                 mode->num_rates++;
1541                 if (mode->num_rates == 4)
1542                         break;
1543         }
1544
1545         if (mode->num_rates == 0) {
1546                 os_free(mode->channels);
1547                 os_free(mode->rates);
1548                 (*num_modes)--;
1549                 return modes; /* No 802.11b rates */
1550         }
1551
1552         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1553                    "information");
1554
1555         return modes;
1556 }
1557
1558 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1559                                                          u16 *num_modes,
1560                                                          u16 *flags)
1561 {
1562         struct i802_driver_data *drv = priv;
1563         struct nl_msg *msg;
1564         struct phy_info_arg result = {
1565                 .num_modes = num_modes,
1566                 .modes = NULL,
1567         };
1568
1569         *num_modes = 0;
1570         *flags = 0;
1571
1572         msg = nlmsg_alloc();
1573         if (!msg)
1574                 return NULL;
1575
1576         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1577                     0, NL80211_CMD_GET_WIPHY, 0);
1578
1579         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1580
1581         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1582                 return i802_add_11b(result.modes, num_modes);
1583  nla_put_failure:
1584         return NULL;
1585 }
1586
1587
1588 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1589                              const char *ifname, int vlan_id)
1590 {
1591         struct i802_driver_data *drv = priv;
1592         struct nl_msg *msg;
1593
1594         msg = nlmsg_alloc();
1595         if (!msg)
1596                 return -ENOMEM;
1597
1598         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1599                     0, NL80211_CMD_SET_STATION, 0);
1600
1601         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1602                     if_nametoindex(drv->iface));
1603         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1604         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1605                     if_nametoindex(ifname));
1606
1607         return send_and_recv_msgs(drv, msg, NULL, NULL);
1608  nla_put_failure:
1609         return -ENOBUFS;
1610 }
1611
1612
1613 static int i802_set_country(void *priv, const char *country)
1614 {
1615         struct i802_driver_data *drv = priv;
1616         struct nl_msg *msg;
1617         char alpha2[3];
1618
1619         msg = nlmsg_alloc();
1620         if (!msg)
1621                 return -ENOMEM;
1622
1623         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1624                     0, NL80211_CMD_REQ_SET_REG, 0);
1625
1626         alpha2[0] = country[0];
1627         alpha2[1] = country[1];
1628         alpha2[2] = '\0';
1629         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1630
1631         return send_and_recv_msgs(drv, msg, NULL, NULL);
1632  nla_put_failure:
1633         return -ENOBUFS;
1634 }
1635
1636
1637 static void handle_unknown_sta(struct i802_driver_data *drv, u8 *ta)
1638 {
1639         struct sta_info *sta;
1640
1641         sta = ap_get_sta(drv->hapd, ta);
1642         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1643                 printf("Data/PS-poll frame from not associated STA "
1644                        MACSTR "\n", MAC2STR(ta));
1645                 if (sta && (sta->flags & WLAN_STA_AUTH))
1646                         i802_sta_disassoc(
1647                                 drv, ta,
1648                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1649                 else
1650                         i802_sta_deauth(
1651                                 drv, ta,
1652                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1653         }
1654 }
1655
1656
1657 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1658                                int ok)
1659 {
1660         struct ieee80211_hdr *hdr;
1661         u16 fc, type, stype;
1662         struct sta_info *sta;
1663
1664         hdr = (struct ieee80211_hdr *) buf;
1665         fc = le_to_host16(hdr->frame_control);
1666
1667         type = WLAN_FC_GET_TYPE(fc);
1668         stype = WLAN_FC_GET_STYPE(fc);
1669
1670         switch (type) {
1671         case WLAN_FC_TYPE_MGMT:
1672                 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1673                            ok ? "ACK" : "fail");
1674                 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1675                 break;
1676         case WLAN_FC_TYPE_CTRL:
1677                 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1678                            ok ? "ACK" : "fail");
1679                 break;
1680         case WLAN_FC_TYPE_DATA:
1681                 wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
1682                            ok ? "ACK" : "fail");
1683                 sta = ap_get_sta(hapd, hdr->addr1);
1684                 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1685                         wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1686                                    "activity poll", MAC2STR(sta->addr),
1687                                    ok ? "ACKed" : "did not ACK");
1688                         if (ok)
1689                                 sta->flags &= ~WLAN_STA_PENDING_POLL;
1690                 }
1691                 if (sta)
1692                         ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1693                 break;
1694         default:
1695                 printf("unknown TX callback frame type %d\n", type);
1696                 break;
1697         }
1698 }
1699
1700
1701 static void handle_frame(struct i802_driver_data *drv,
1702                          struct hostapd_iface *iface, u8 *buf, size_t len,
1703                          struct hostapd_frame_info *hfi,
1704                          enum ieee80211_msg_type msg_type)
1705 {
1706         struct ieee80211_hdr *hdr;
1707         u16 fc, type, stype;
1708         size_t data_len = len;
1709         struct hostapd_data *hapd = NULL;
1710         int broadcast_bssid = 0;
1711         size_t i;
1712         u8 *bssid;
1713
1714         /*
1715          * PS-Poll frames are 16 bytes. All other frames are
1716          * 24 bytes or longer.
1717          */
1718         if (len < 16)
1719                 return;
1720
1721         hdr = (struct ieee80211_hdr *) buf;
1722         fc = le_to_host16(hdr->frame_control);
1723
1724         type = WLAN_FC_GET_TYPE(fc);
1725         stype = WLAN_FC_GET_STYPE(fc);
1726
1727         switch (type) {
1728         case WLAN_FC_TYPE_DATA:
1729                 if (len < 24)
1730                         return;
1731                 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1732                 case WLAN_FC_TODS:
1733                         bssid = hdr->addr1;
1734                         break;
1735                 default:
1736                         /* discard */
1737                         return;
1738                 }
1739                 break;
1740         case WLAN_FC_TYPE_CTRL:
1741                 /* discard non-ps-poll frames */
1742                 if (stype != WLAN_FC_STYPE_PSPOLL)
1743                         return;
1744                 bssid = hdr->addr1;
1745                 break;
1746         case WLAN_FC_TYPE_MGMT:
1747                 bssid = hdr->addr3;
1748                 break;
1749         default:
1750                 /* discard */
1751                 return;
1752         }
1753
1754         /* find interface frame belongs to */
1755         for (i = 0; i < iface->num_bss; i++) {
1756                 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1757                         hapd = iface->bss[i];
1758                         break;
1759                 }
1760         }
1761
1762         if (hapd == NULL) {
1763                 hapd = iface->bss[0];
1764
1765                 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1766                     bssid[2] != 0xff || bssid[3] != 0xff ||
1767                     bssid[4] != 0xff || bssid[5] != 0xff) {
1768                         /*
1769                          * Unknown BSSID - drop frame if this is not from
1770                          * passive scanning or a beacon (at least ProbeReq
1771                          * frames to other APs may be allowed through RX
1772                          * filtering in the wlan hw/driver)
1773                          */
1774                         if ((type != WLAN_FC_TYPE_MGMT ||
1775                              stype != WLAN_FC_STYPE_BEACON))
1776                                 return;
1777                 } else
1778                         broadcast_bssid = 1;
1779         }
1780
1781         switch (msg_type) {
1782         case ieee80211_msg_normal:
1783                 /* continue processing */
1784                 break;
1785         case ieee80211_msg_tx_callback_ack:
1786                 handle_tx_callback(hapd, buf, data_len, 1);
1787                 return;
1788         case ieee80211_msg_tx_callback_fail:
1789                 handle_tx_callback(hapd, buf, data_len, 0);
1790                 return;
1791         }
1792
1793         switch (type) {
1794         case WLAN_FC_TYPE_MGMT:
1795                 if (stype != WLAN_FC_STYPE_BEACON &&
1796                     stype != WLAN_FC_STYPE_PROBE_REQ)
1797                         wpa_printf(MSG_MSGDUMP, "MGMT");
1798                 if (broadcast_bssid) {
1799                         for (i = 0; i < iface->num_bss; i++)
1800                                 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1801                                                 stype, hfi);
1802                 } else
1803                         ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1804                 break;
1805         case WLAN_FC_TYPE_CTRL:
1806                 /* can only get here with PS-Poll frames */
1807                 wpa_printf(MSG_DEBUG, "CTRL");
1808                 handle_unknown_sta(drv, hdr->addr2);
1809                 break;
1810         case WLAN_FC_TYPE_DATA:
1811                 handle_unknown_sta(drv, hdr->addr2);
1812                 break;
1813         }
1814 }
1815
1816
1817 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1818 {
1819         struct i802_driver_data *drv = eloop_ctx;
1820         struct hostapd_data *hapd = drv->hapd;
1821         struct sockaddr_ll lladdr;
1822         unsigned char buf[3000];
1823         int len;
1824         socklen_t fromlen = sizeof(lladdr);
1825
1826         len = recvfrom(sock, buf, sizeof(buf), 0,
1827                        (struct sockaddr *)&lladdr, &fromlen);
1828         if (len < 0) {
1829                 perror("recv");
1830                 return;
1831         }
1832
1833         if (have_ifidx(drv, lladdr.sll_ifindex))
1834                 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1835 }
1836
1837
1838 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1839 {
1840         struct i802_driver_data *drv = eloop_ctx;
1841         int len;
1842         unsigned char buf[3000];
1843         struct hostapd_data *hapd = drv->hapd;
1844         struct ieee80211_radiotap_iterator iter;
1845         int ret;
1846         struct hostapd_frame_info hfi;
1847         int injected = 0, failed = 0, msg_type, rxflags = 0;
1848
1849         len = recv(sock, buf, sizeof(buf), 0);
1850         if (len < 0) {
1851                 perror("recv");
1852                 return;
1853         }
1854
1855         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1856                 printf("received invalid radiotap frame\n");
1857                 return;
1858         }
1859
1860         memset(&hfi, 0, sizeof(hfi));
1861
1862         while (1) {
1863                 ret = ieee80211_radiotap_iterator_next(&iter);
1864                 if (ret == -ENOENT)
1865                         break;
1866                 if (ret) {
1867                         printf("received invalid radiotap frame (%d)\n", ret);
1868                         return;
1869                 }
1870                 switch (iter.this_arg_index) {
1871                 case IEEE80211_RADIOTAP_FLAGS:
1872                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1873                                 len -= 4;
1874                         break;
1875                 case IEEE80211_RADIOTAP_RX_FLAGS:
1876                         rxflags = 1;
1877                         break;
1878                 case IEEE80211_RADIOTAP_TX_FLAGS:
1879                         injected = 1;
1880                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1881                                         IEEE80211_RADIOTAP_F_TX_FAIL;
1882                         break;
1883                 case IEEE80211_RADIOTAP_DATA_RETRIES:
1884                         break;
1885                 case IEEE80211_RADIOTAP_CHANNEL:
1886                         /* TODO convert from freq/flags to channel number
1887                         hfi.channel = XXX;
1888                         hfi.phytype = XXX;
1889                          */
1890                         break;
1891                 case IEEE80211_RADIOTAP_RATE:
1892                         hfi.datarate = *iter.this_arg * 5;
1893                         break;
1894                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1895                         hfi.ssi_signal = *iter.this_arg;
1896                         break;
1897                 }
1898         }
1899
1900         if (rxflags && injected)
1901                 return;
1902
1903         if (!injected)
1904                 msg_type = ieee80211_msg_normal;
1905         else if (failed)
1906                 msg_type = ieee80211_msg_tx_callback_fail;
1907         else
1908                 msg_type = ieee80211_msg_tx_callback_ack;
1909
1910         handle_frame(drv, hapd->iface, buf + iter.max_length,
1911                      len - iter.max_length, &hfi, msg_type);
1912 }
1913
1914
1915 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
1916 {
1917         char buf[IFNAMSIZ];
1918         struct sockaddr_ll ll;
1919         int optval;
1920         socklen_t optlen;
1921
1922         snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
1923         buf[IFNAMSIZ - 1] = '\0';
1924
1925         drv->monitor_ifidx =
1926                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
1927
1928         if (drv->monitor_ifidx < 0)
1929                 return -1;
1930
1931         if (hostapd_set_iface_flags(drv, buf, 1))
1932                 goto error;
1933
1934         memset(&ll, 0, sizeof(ll));
1935         ll.sll_family = AF_PACKET;
1936         ll.sll_ifindex = drv->monitor_ifidx;
1937         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
1938         if (drv->monitor_sock < 0) {
1939                 perror("socket[PF_PACKET,SOCK_RAW]");
1940                 goto error;
1941         }
1942
1943         if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
1944                  sizeof(ll)) < 0) {
1945                 perror("monitor socket bind");
1946                 goto error;
1947         }
1948
1949         optlen = sizeof(optval);
1950         optval = 20;
1951         if (setsockopt
1952             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
1953                 perror("Failed to set socket priority");
1954                 goto error;
1955         }
1956
1957         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
1958                                      drv, NULL)) {
1959                 printf("Could not register monitor read socket\n");
1960                 goto error;
1961         }
1962
1963         return 0;
1964  error:
1965         nl80211_remove_iface(drv, drv->monitor_ifidx);
1966         return -1;
1967 }
1968
1969
1970 static int nl80211_set_master_mode(struct i802_driver_data *drv,
1971                                    const char *ifname)
1972 {
1973         struct nl_msg *msg;
1974         int ret = -ENOBUFS;
1975
1976         msg = nlmsg_alloc();
1977         if (!msg)
1978                 return -ENOMEM;
1979
1980         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1981                     0, NL80211_CMD_SET_INTERFACE, 0);
1982         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1983                     if_nametoindex(ifname));
1984         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
1985
1986         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1987         if (!ret)
1988                 return 0;
1989  nla_put_failure:
1990         wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
1991                    "mode.", ifname);
1992         return ret;
1993 }
1994
1995
1996 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
1997 {
1998         struct ifreq ifr;
1999         struct sockaddr_ll addr;
2000
2001         drv->ioctl_sock = -1;
2002
2003         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2004         if (drv->ioctl_sock < 0) {
2005                 perror("socket[PF_INET,SOCK_DGRAM]");
2006                 return -1;
2007         }
2008
2009         /* start listening for EAPOL on the default AP interface */
2010         add_ifidx(drv, if_nametoindex(drv->iface));
2011
2012         if (hostapd_set_iface_flags(drv, drv->iface, 0))
2013                 return -1;
2014
2015         if (bssid) {
2016                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2017                 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2018                 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2019
2020                 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2021                         perror("ioctl(SIOCSIFHWADDR)");
2022                         return -1;
2023                 }
2024         }
2025
2026         /*
2027          * initialise generic netlink and nl80211
2028          */
2029         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2030         if (!drv->nl_cb) {
2031                 printf("Failed to allocate netlink callbacks.\n");
2032                 return -1;
2033         }
2034
2035         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2036         if (!drv->nl_handle) {
2037                 printf("Failed to allocate netlink handle.\n");
2038                 return -1;
2039         }
2040
2041         if (genl_connect(drv->nl_handle)) {
2042                 printf("Failed to connect to generic netlink.\n");
2043                 return -1;
2044         }
2045
2046 #ifdef CONFIG_LIBNL20
2047         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
2048                 printf("Failed to allocate generic netlink cache.\n");
2049                 return -1;
2050         }
2051 #else /* CONFIG_LIBNL20 */
2052         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2053         if (!drv->nl_cache) {
2054                 printf("Failed to allocate generic netlink cache.\n");
2055                 return -1;
2056         }
2057 #endif /* CONFIG_LIBNL20 */
2058
2059         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2060         if (!drv->nl80211) {
2061                 printf("nl80211 not found.\n");
2062                 return -1;
2063         }
2064
2065         /* Initialise a monitor interface */
2066         if (nl80211_create_monitor_interface(drv))
2067                 return -1;
2068
2069         if (nl80211_set_master_mode(drv, drv->iface))
2070                 goto fail1;
2071
2072         if (hostapd_set_iface_flags(drv, drv->iface, 1))
2073                 goto fail1;
2074
2075         memset(&addr, 0, sizeof(addr));
2076         addr.sll_family = AF_PACKET;
2077         addr.sll_ifindex = ifr.ifr_ifindex;
2078         wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2079                    addr.sll_ifindex);
2080
2081         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2082         if (drv->eapol_sock < 0) {
2083                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2084                 goto fail1;
2085         }
2086
2087         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2088         {
2089                 printf("Could not register read socket for eapol\n");
2090                 return -1;
2091         }
2092
2093         memset(&ifr, 0, sizeof(ifr));
2094         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2095         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2096                 perror("ioctl(SIOCGIFHWADDR)");
2097                 goto fail1;
2098         }
2099
2100         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2101                 printf("Invalid HW-addr family 0x%04x\n",
2102                        ifr.ifr_hwaddr.sa_family);
2103                 goto fail1;
2104         }
2105         memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2106
2107         return 0;
2108
2109 fail1:
2110         nl80211_remove_iface(drv, drv->monitor_ifidx);
2111         return -1;
2112 }
2113
2114
2115 static int i802_get_inact_sec(void *priv, const u8 *addr)
2116 {
2117         struct hostap_sta_driver_data data;
2118         int ret;
2119
2120         data.inactive_msec = (unsigned long) -1;
2121         ret = i802_read_sta_data(priv, &data, addr);
2122         if (ret || data.inactive_msec == (unsigned long) -1)
2123                 return -1;
2124         return data.inactive_msec / 1000;
2125 }
2126
2127
2128 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2129 {
2130 #if 0
2131         /* TODO */
2132 #endif
2133         return 0;
2134 }
2135
2136
2137 static void
2138 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2139                                        char *custom)
2140 {
2141         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2142
2143         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2144                 char *pos;
2145                 u8 addr[ETH_ALEN];
2146                 pos = strstr(custom, "addr=");
2147                 if (pos == NULL) {
2148                         wpa_printf(MSG_DEBUG,
2149                                    "MLME-MICHAELMICFAILURE.indication "
2150                                    "without sender address ignored");
2151                         return;
2152                 }
2153                 pos += 5;
2154                 if (hwaddr_aton(pos, addr) == 0) {
2155                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2156                 } else {
2157                         wpa_printf(MSG_DEBUG,
2158                                    "MLME-MICHAELMICFAILURE.indication "
2159                                    "with invalid MAC address");
2160                 }
2161         }
2162 }
2163
2164
2165 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2166                                             char *data, int len)
2167 {
2168         struct iw_event iwe_buf, *iwe = &iwe_buf;
2169         char *pos, *end, *custom, *buf;
2170
2171         pos = data;
2172         end = data + len;
2173
2174         while (pos + IW_EV_LCP_LEN <= end) {
2175                 /* Event data may be unaligned, so make a local, aligned copy
2176                  * before processing. */
2177                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2178                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2179                            iwe->cmd, iwe->len);
2180                 if (iwe->len <= IW_EV_LCP_LEN)
2181                         return;
2182
2183                 custom = pos + IW_EV_POINT_LEN;
2184                 if (drv->we_version > 18 &&
2185                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
2186                      iwe->cmd == IWEVCUSTOM)) {
2187                         /* WE-19 removed the pointer from struct iw_point */
2188                         char *dpos = (char *) &iwe_buf.u.data.length;
2189                         int dlen = dpos - (char *) &iwe_buf;
2190                         memcpy(dpos, pos + IW_EV_LCP_LEN,
2191                                sizeof(struct iw_event) - dlen);
2192                 } else {
2193                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2194                         custom += IW_EV_POINT_OFF;
2195                 }
2196
2197                 switch (iwe->cmd) {
2198                 case IWEVCUSTOM:
2199                         if (custom + iwe->u.data.length > end)
2200                                 return;
2201                         buf = malloc(iwe->u.data.length + 1);
2202                         if (buf == NULL)
2203                                 return;
2204                         memcpy(buf, custom, iwe->u.data.length);
2205                         buf[iwe->u.data.length] = '\0';
2206                         hostapd_wireless_event_wireless_custom(drv, buf);
2207                         free(buf);
2208                         break;
2209                 }
2210
2211                 pos += iwe->len;
2212         }
2213 }
2214
2215
2216 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2217                                                struct nlmsghdr *h, int len)
2218 {
2219         struct ifinfomsg *ifi;
2220         int attrlen, nlmsg_len, rta_len;
2221         struct rtattr *attr;
2222
2223         if (len < (int) sizeof(*ifi))
2224                 return;
2225
2226         ifi = NLMSG_DATA(h);
2227
2228         /* TODO: use ifi->ifi_index to filter out wireless events from other
2229          * interfaces */
2230
2231         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2232
2233         attrlen = h->nlmsg_len - nlmsg_len;
2234         if (attrlen < 0)
2235                 return;
2236
2237         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
2238
2239         rta_len = RTA_ALIGN(sizeof(struct rtattr));
2240         while (RTA_OK(attr, attrlen)) {
2241                 if (attr->rta_type == IFLA_WIRELESS) {
2242                         hostapd_wireless_event_wireless(
2243                                 drv, ((char *) attr) + rta_len,
2244                                 attr->rta_len - rta_len);
2245                 }
2246                 attr = RTA_NEXT(attr, attrlen);
2247         }
2248 }
2249
2250
2251 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2252                                            void *sock_ctx)
2253 {
2254         char buf[256];
2255         int left;
2256         struct sockaddr_nl from;
2257         socklen_t fromlen;
2258         struct nlmsghdr *h;
2259         struct i802_driver_data *drv = eloop_ctx;
2260
2261         fromlen = sizeof(from);
2262         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2263                         (struct sockaddr *) &from, &fromlen);
2264         if (left < 0) {
2265                 if (errno != EINTR && errno != EAGAIN)
2266                         perror("recvfrom(netlink)");
2267                 return;
2268         }
2269
2270         h = (struct nlmsghdr *) buf;
2271         while (left >= (int) sizeof(*h)) {
2272                 int len, plen;
2273
2274                 len = h->nlmsg_len;
2275                 plen = len - sizeof(*h);
2276                 if (len > left || plen < 0) {
2277                         printf("Malformed netlink message: "
2278                                "len=%d left=%d plen=%d\n",
2279                                len, left, plen);
2280                         break;
2281                 }
2282
2283                 switch (h->nlmsg_type) {
2284                 case RTM_NEWLINK:
2285                         hostapd_wireless_event_rtm_newlink(drv, h, plen);
2286                         break;
2287                 }
2288
2289                 len = NLMSG_ALIGN(len);
2290                 left -= len;
2291                 h = (struct nlmsghdr *) ((char *) h + len);
2292         }
2293
2294         if (left > 0) {
2295                 printf("%d extra bytes in the end of netlink message\n", left);
2296         }
2297 }
2298
2299
2300 static int hostap_get_we_version(struct i802_driver_data *drv)
2301 {
2302         struct iw_range *range;
2303         struct iwreq iwr;
2304         int minlen;
2305         size_t buflen;
2306
2307         drv->we_version = 0;
2308
2309         /*
2310          * Use larger buffer than struct iw_range in order to allow the
2311          * structure to grow in the future.
2312          */
2313         buflen = sizeof(struct iw_range) + 500;
2314         range = os_zalloc(buflen);
2315         if (range == NULL)
2316                 return -1;
2317
2318         memset(&iwr, 0, sizeof(iwr));
2319         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2320         iwr.u.data.pointer = (caddr_t) range;
2321         iwr.u.data.length = buflen;
2322
2323         minlen = ((char *) &range->enc_capa) - (char *) range +
2324                 sizeof(range->enc_capa);
2325
2326         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2327                 perror("ioctl[SIOCGIWRANGE]");
2328                 free(range);
2329                 return -1;
2330         } else if (iwr.u.data.length >= minlen &&
2331                    range->we_version_compiled >= 18) {
2332                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2333                            "WE(source)=%d enc_capa=0x%x",
2334                            range->we_version_compiled,
2335                            range->we_version_source,
2336                            range->enc_capa);
2337                 drv->we_version = range->we_version_compiled;
2338         }
2339
2340         free(range);
2341         return 0;
2342 }
2343
2344
2345 static int i802_wireless_event_init(void *priv)
2346 {
2347         struct i802_driver_data *drv = priv;
2348         int s;
2349         struct sockaddr_nl local;
2350
2351         hostap_get_we_version(drv);
2352
2353         drv->wext_sock = -1;
2354
2355         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2356         if (s < 0) {
2357                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2358                 return -1;
2359         }
2360
2361         memset(&local, 0, sizeof(local));
2362         local.nl_family = AF_NETLINK;
2363         local.nl_groups = RTMGRP_LINK;
2364         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2365                 perror("bind(netlink)");
2366                 close(s);
2367                 return -1;
2368         }
2369
2370         eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2371                                  NULL);
2372         drv->wext_sock = s;
2373
2374         return 0;
2375 }
2376
2377
2378 static void i802_wireless_event_deinit(void *priv)
2379 {
2380         struct i802_driver_data *drv = priv;
2381         if (drv->wext_sock < 0)
2382                 return;
2383         eloop_unregister_read_sock(drv->wext_sock);
2384         close(drv->wext_sock);
2385 }
2386
2387
2388 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2389 {
2390         struct i802_driver_data *drv = priv;
2391         struct ieee80211_mgmt mgmt;
2392
2393         memset(&mgmt, 0, sizeof(mgmt));
2394         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2395                                           WLAN_FC_STYPE_DEAUTH);
2396         memcpy(mgmt.da, addr, ETH_ALEN);
2397         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2398         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2399         mgmt.u.deauth.reason_code = host_to_le16(reason);
2400         return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2401                                       sizeof(mgmt.u.deauth), 0);
2402 }
2403
2404
2405 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2406 {
2407         struct i802_driver_data *drv = priv;
2408         struct ieee80211_mgmt mgmt;
2409
2410         memset(&mgmt, 0, sizeof(mgmt));
2411         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2412                                           WLAN_FC_STYPE_DISASSOC);
2413         memcpy(mgmt.da, addr, ETH_ALEN);
2414         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2415         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2416         mgmt.u.disassoc.reason_code = host_to_le16(reason);
2417         return  i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2418                                        sizeof(mgmt.u.disassoc), 0);
2419 }
2420
2421
2422 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2423 {
2424         struct i802_driver_data *drv;
2425
2426         drv = os_zalloc(sizeof(struct i802_driver_data));
2427         if (drv == NULL) {
2428                 printf("Could not allocate memory for i802 driver data\n");
2429                 return NULL;
2430         }
2431
2432         drv->hapd = hapd;
2433         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2434
2435         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2436         drv->if_indices = drv->default_if_indices;
2437         drv->bridge = if_nametoindex(hapd->conf->bridge);
2438
2439         if (i802_init_sockets(drv, bssid))
2440                 goto failed;
2441
2442         return drv;
2443
2444 failed:
2445         free(drv);
2446         return NULL;
2447 }
2448
2449
2450 static void *i802_init(struct hostapd_data *hapd)
2451 {
2452         return i802_init_bssid(hapd, NULL);
2453 }
2454
2455
2456 static void i802_deinit(void *priv)
2457 {
2458         struct i802_driver_data *drv = priv;
2459
2460         if (drv->last_freq_ht) {
2461                 /* Clear HT flags from the driver */
2462                 struct hostapd_freq_params freq;
2463                 os_memset(&freq, 0, sizeof(freq));
2464                 freq.freq = drv->last_freq;
2465                 i802_set_freq2(priv, &freq);
2466         }
2467
2468         i802_del_beacon(drv);
2469
2470         /* remove monitor interface */
2471         nl80211_remove_iface(drv, drv->monitor_ifidx);
2472
2473         (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2474
2475         if (drv->monitor_sock >= 0) {
2476                 eloop_unregister_read_sock(drv->monitor_sock);
2477                 close(drv->monitor_sock);
2478         }
2479         if (drv->ioctl_sock >= 0)
2480                 close(drv->ioctl_sock);
2481         if (drv->eapol_sock >= 0) {
2482                 eloop_unregister_read_sock(drv->eapol_sock);
2483                 close(drv->eapol_sock);
2484         }
2485
2486         genl_family_put(drv->nl80211);
2487         nl_cache_free(drv->nl_cache);
2488         nl_handle_destroy(drv->nl_handle);
2489         nl_cb_put(drv->nl_cb);
2490
2491         if (drv->if_indices != drv->default_if_indices)
2492                 free(drv->if_indices);
2493
2494         free(drv);
2495 }
2496
2497
2498 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2499         .name = "nl80211",
2500         .init = i802_init,
2501         .init_bssid = i802_init_bssid,
2502         .deinit = i802_deinit,
2503         .wireless_event_init = i802_wireless_event_init,
2504         .wireless_event_deinit = i802_wireless_event_deinit,
2505         .set_ieee8021x = i802_set_ieee8021x,
2506         .set_privacy = i802_set_privacy,
2507         .set_encryption = i802_set_encryption,
2508         .get_seqnum = i802_get_seqnum,
2509         .flush = i802_flush,
2510         .read_sta_data = i802_read_sta_data,
2511         .send_eapol = i802_send_eapol,
2512         .sta_set_flags = i802_sta_set_flags,
2513         .sta_deauth = i802_sta_deauth,
2514         .sta_disassoc = i802_sta_disassoc,
2515         .sta_remove = i802_sta_remove,
2516         .send_mgmt_frame = i802_send_mgmt_frame,
2517         .sta_add2 = i802_sta_add2,
2518         .get_inact_sec = i802_get_inact_sec,
2519         .sta_clear_stats = i802_sta_clear_stats,
2520         .set_freq2 = i802_set_freq2,
2521         .set_rts = i802_set_rts,
2522         .get_rts = i802_get_rts,
2523         .set_frag = i802_set_frag,
2524         .get_frag = i802_get_frag,
2525         .set_retry = i802_set_retry,
2526         .get_retry = i802_get_retry,
2527         .set_rate_sets = i802_set_rate_sets,
2528         .set_regulatory_domain = i802_set_regulatory_domain,
2529         .set_beacon = i802_set_beacon,
2530         .set_internal_bridge = i802_set_internal_bridge,
2531         .set_beacon_int = i802_set_beacon_int,
2532         .set_dtim_period = i802_set_dtim_period,
2533         .set_cts_protect = i802_set_cts_protect,
2534         .set_preamble = i802_set_preamble,
2535         .set_short_slot_time = i802_set_short_slot_time,
2536         .set_tx_queue_params = i802_set_tx_queue_params,
2537         .bss_add = i802_bss_add,
2538         .bss_remove = i802_bss_remove,
2539         .if_add = i802_if_add,
2540         .if_update = i802_if_update,
2541         .if_remove = i802_if_remove,
2542         .get_hw_feature_data = i802_get_hw_feature_data,
2543         .set_sta_vlan = i802_set_sta_vlan,
2544         .set_country = i802_set_country,
2545 };