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 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
  50
  51 enum ieee80211_msg_type {
  52         ieee80211_msg_normal = 0,
  53         ieee80211_msg_tx_callback_ack = 1,
  54         ieee80211_msg_tx_callback_fail = 2,
  55 };
  56
  57 struct i802_driver_data {
  58         struct hostapd_data *hapd;
  59
  60         char iface[IFNAMSIZ + 1];
  61         int bridge;
  62         int ioctl_sock; /* socket for ioctl() use */
  63         int wext_sock; /* socket for wireless events */
  64         int eapol_sock; /* socket for EAPOL frames */
  65         int monitor_sock; /* socket for monitor */
  66         int monitor_ifidx;
  67
  68         int default_if_indices[16];
  69         int *if_indices;
  70         int num_if_indices;
  71
  72         int we_version;
  73         struct nl_handle *nl_handle;
  74         struct nl_cache *nl_cache;
  75         struct nl_cb *nl_cb;
  76         struct genl_family *nl80211;
  77         int dtim_period, beacon_int;
  78         unsigned int beacon_set:1;
  79         unsigned int ieee802_1x_active:1;
  80
  81         int last_freq;
  82         int last_freq_ht;
  83 };
  84
  85
  86 static int i802_sta_deauth(void *priv, const u8 *addr, int reason);
  87 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason);
  88
  89
  90 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
  91 {
  92         int i;
  93         int *old;
  94
  95         for (i = 0; i < drv->num_if_indices; i++) {
  96                 if (drv->if_indices[i] == 0) {
  97                         drv->if_indices[i] = ifidx;
  98                         return;
  99                 }
 100         }
 101
 102         if (drv->if_indices != drv->default_if_indices)
 103                 old = drv->if_indices;
 104         else
 105                 old = NULL;
 106
 107         drv->if_indices = realloc(old,
 108                                   sizeof(int) * (drv->num_if_indices + 1));
 109         if (!drv->if_indices) {
 110                 if (!old)
 111                         drv->if_indices = drv->default_if_indices;
 112                 else
 113                         drv->if_indices = old;
 114                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
 115                            "interfaces");
 116                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
 117                 return;
 118         }
 119         drv->if_indices[drv->num_if_indices] = ifidx;
 120         drv->num_if_indices++;
 121 }
 122
 123
 124 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
 125 {
 126         int i;
 127
 128         for (i = 0; i < drv->num_if_indices; i++) {
 129                 if (drv->if_indices[i] == ifidx) {
 130                         drv->if_indices[i] = 0;
 131                         break;
 132                 }
 133         }
 134 }
 135
 136
 137 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
 138 {
 139         int i;
 140
 141         if (ifidx == drv->bridge)
 142                 return 1;
 143
 144         for (i = 0; i < drv->num_if_indices; i++)
 145                 if (drv->if_indices[i] == ifidx)
 146                         return 1;
 147
 148         return 0;
 149 }
 150
 151
 152 /* nl80211 code */
 153 static int ack_handler(struct nl_msg *msg, void *arg)
 154 {
 155         int *err = arg;
 156         *err = 0;
 157         return NL_STOP;
 158 }
 159
 160 static int finish_handler(struct nl_msg *msg, void *arg)
 161 {
 162         int *ret = arg;
 163         *ret = 0;
 164         return NL_SKIP;
 165 }
 166
 167 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 168                          void *arg)
 169 {
 170         int *ret = arg;
 171         *ret = err->error;
 172         return NL_SKIP;
 173 }
 174
 175 static int send_and_recv_msgs(struct i802_driver_data *drv,
 176                               struct nl_msg *msg,
 177                               int (*valid_handler)(struct nl_msg *, void *),
 178                               void *valid_data)
 179 {
 180         struct nl_cb *cb;
 181         int err = -ENOMEM;
 182
 183         cb = nl_cb_clone(drv->nl_cb);
 184         if (!cb)
 185                 goto out;
 186
 187         err = nl_send_auto_complete(drv->nl_handle, msg);
 188         if (err < 0)
 189                 goto out;
 190
 191         err = 1;
 192
 193         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 194         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 195         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 196
 197         if (valid_handler)
 198                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 199                           valid_handler, valid_data);
 200
 201         while (err > 0)
 202                 nl_recvmsgs(drv->nl_handle, cb);
 203  out:
 204         nl_cb_put(cb);
 205         nlmsg_free(msg);
 206         return err;
 207 }
 208
 209 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
 210                                    const char *ifname, int dev_up)
 211 {
 212         struct ifreq ifr;
 213
 214         if (drv->ioctl_sock < 0)
 215                 return -1;
 216
 217         memset(&ifr, 0, sizeof(ifr));
 218         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 219
 220         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 221                 perror("ioctl[SIOCGIFFLAGS]");
 222                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 223                            drv->iface);
 224                 return -1;
 225         }
 226
 227         if (dev_up)
 228                 ifr.ifr_flags |= IFF_UP;
 229         else
 230                 ifr.ifr_flags &= ~IFF_UP;
 231
 232         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 233                 perror("ioctl[SIOCSIFFLAGS]");
 234                 return -1;
 235         }
 236
 237         return 0;
 238 }
 239
 240
 241 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
 242                        const char *alg, const u8 *addr, int idx, const u8 *key,
 243                        size_t key_len, int txkey)
 244 {
 245         struct nl_msg *msg;
 246         int ret;
 247
 248         msg = nlmsg_alloc();
 249         if (!msg)
 250                 return -ENOMEM;
 251
 252         if (strcmp(alg, "none") == 0) {
 253                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 254                             0, NL80211_CMD_DEL_KEY, 0);
 255         } else {
 256                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 257                             0, NL80211_CMD_NEW_KEY, 0);
 258                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
 259                 if (strcmp(alg, "WEP") == 0) {
 260                         if (key_len == 5)
 261                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 262                                             0x000FAC01);
 263                         else
 264                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 265                                             0x000FAC05);
 266                 } else if (strcmp(alg, "TKIP") == 0)
 267                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
 268                 else if (strcmp(alg, "CCMP") == 0)
 269                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
 270                 else if (strcmp(alg, "IGTK") == 0)
 271                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
 272                 else {
 273                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
 274                                    "algorithm '%s'", __func__, alg);
 275                         nlmsg_free(msg);
 276                         return -1;
 277                 }
 278         }
 279
 280         if (addr)
 281                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 282         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 283         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 284
 285         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 286         if (ret == -ENOENT)
 287                 ret = 0;
 288
 289         /*
 290          * If we failed or don't need to set the default TX key (below),
 291          * we're done here.
 292          */
 293         if (ret || !txkey || addr)
 294                 return ret;
 295
 296         msg = nlmsg_alloc();
 297         if (!msg)
 298                 return -ENOMEM;
 299
 300         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 301                     0, NL80211_CMD_SET_KEY, 0);
 302         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 303         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 304         if (strcmp(alg, "IGTK") == 0)
 305                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
 306         else
 307                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 308
 309         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 310         if (ret == -ENOENT)
 311                 ret = 0;
 312         return ret;
 313  nla_put_failure:
 314         return -ENOBUFS;
 315 }
 316
 317
 318 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
 319                                const u8 *addr, int idx, const u8 *key,
 320                                size_t key_len, int txkey)
 321 {
 322         struct i802_driver_data *drv = priv;
 323         int ret;
 324
 325         ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
 326                           key_len, txkey);
 327         if (ret < 0)
 328                 return ret;
 329
 330         return ret;
 331 }
 332
 333
 334 static inline int min_int(int a, int b)
 335 {
 336         if (a < b)
 337                 return a;
 338         return b;
 339 }
 340
 341
 342 static int get_key_handler(struct nl_msg *msg, void *arg)
 343 {
 344         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 345         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 346
 347         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 348                   genlmsg_attrlen(gnlh, 0), NULL);
 349
 350         /*
 351          * TODO: validate the key index and mac address!
 352          * Otherwise, there's a race condition as soon as
 353          * the kernel starts sending key notifications.
 354          */
 355
 356         if (tb[NL80211_ATTR_KEY_SEQ])
 357                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 358                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
 359         return NL_SKIP;
 360 }
 361
 362
 363 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
 364                            int idx, u8 *seq)
 365 {
 366         struct i802_driver_data *drv = priv;
 367         struct nl_msg *msg;
 368
 369         msg = nlmsg_alloc();
 370         if (!msg)
 371                 return -ENOMEM;
 372
 373         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 374                     0, NL80211_CMD_GET_KEY, 0);
 375
 376         if (addr)
 377                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 378         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 379         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
 380
 381         memset(seq, 0, 6);
 382
 383         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
 384  nla_put_failure:
 385         return -ENOBUFS;
 386 }
 387
 388
 389 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
 390                               int mode)
 391 {
 392         struct i802_driver_data *drv = priv;
 393         struct nl_msg *msg;
 394         u8 rates[NL80211_MAX_SUPP_RATES];
 395         u8 rates_len = 0;
 396         int i;
 397
 398         msg = nlmsg_alloc();
 399         if (!msg)
 400                 return -ENOMEM;
 401
 402         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 403                     NL80211_CMD_SET_BSS, 0);
 404
 405         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
 406                 rates[rates_len++] = basic_rates[i] / 5;
 407
 408         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
 409
 410         /* TODO: multi-BSS support */
 411         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 412
 413         return send_and_recv_msgs(drv, msg, NULL, NULL);
 414  nla_put_failure:
 415         return -ENOBUFS;
 416 }
 417
 418
 419 static int i802_send_frame(void *priv, const void *data, size_t len,
 420                            int encrypt, int flags)
 421 {
 422         __u8 rtap_hdr[] = {
 423                 0x00, 0x00, /* radiotap version */
 424                 0x0e, 0x00, /* radiotap length */
 425                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
 426                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
 427                 0x00,       /* padding */
 428                 0x00, 0x00, /* RX and TX flags to indicate that */
 429                 0x00, 0x00, /* this is the injected frame directly */
 430         };
 431         struct i802_driver_data *drv = priv;
 432         struct iovec iov[2] = {
 433                 {
 434                         .iov_base = &rtap_hdr,
 435                         .iov_len = sizeof(rtap_hdr),
 436                 },
 437                 {
 438                         .iov_base = (void*)data,
 439                         .iov_len = len,
 440                 }
 441         };
 442         struct msghdr msg = {
 443                 .msg_name = NULL,
 444                 .msg_namelen = 0,
 445                 .msg_iov = iov,
 446                 .msg_iovlen = 2,
 447                 .msg_control = NULL,
 448                 .msg_controllen = 0,
 449                 .msg_flags = 0,
 450         };
 451
 452         if (encrypt)
 453                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
 454
 455         return sendmsg(drv->monitor_sock, &msg, flags);
 456 }
 457
 458 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
 459                                 int flags)
 460 {
 461         struct ieee80211_mgmt *mgmt;
 462         int do_not_encrypt = 0;
 463         u16 fc;
 464
 465         mgmt = (struct ieee80211_mgmt *) data;
 466         fc = le_to_host16(mgmt->frame_control);
 467
 468         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
 469             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
 470                 /*
 471                  * Only one of the authentication frame types is encrypted.
 472                  * In order for static WEP encryption to work properly (i.e.,
 473                  * to not encrypt the frame), we need to tell mac80211 about
 474                  * the frames that must not be encrypted.
 475                  */
 476                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 477                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
 478                 if (auth_alg == WLAN_AUTH_OPEN ||
 479                     (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
 480                         do_not_encrypt = 1;
 481         }
 482
 483         return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
 484 }
 485
 486 /* Set kernel driver on given frequency (MHz) */
 487 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
 488 {
 489         struct i802_driver_data *drv = priv;
 490         struct nl_msg *msg;
 491
 492         msg = nlmsg_alloc();
 493         if (!msg)
 494                 return -1;
 495
 496         drv->last_freq = freq->freq;
 497         drv->last_freq_ht = freq->ht_enabled;
 498
 499         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 500                     NL80211_CMD_SET_WIPHY, 0);
 501
 502         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 503         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
 504         if (freq->ht_enabled) {
 505                 switch (freq->sec_channel_offset) {
 506                 case -1:
 507                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 508                                     NL80211_CHAN_HT40MINUS);
 509                         break;
 510                 case 1:
 511                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 512                                     NL80211_CHAN_HT40PLUS);
 513                         break;
 514                 default:
 515                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 516                                     NL80211_CHAN_HT20);
 517                         break;
 518                 }
 519         }
 520
 521         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 522                 return 0;
 523  nla_put_failure:
 524         return -1;
 525 }
 526
 527
 528 static int i802_set_rts(void *priv, int rts)
 529 {
 530         struct i802_driver_data *drv = priv;
 531         struct iwreq iwr;
 532
 533         memset(&iwr, 0, sizeof(iwr));
 534         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 535         iwr.u.rts.value = rts;
 536         iwr.u.rts.fixed = 1;
 537
 538         if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
 539                 perror("ioctl[SIOCSIWRTS]");
 540                 return -1;
 541         }
 542
 543         return 0;
 544 }
 545
 546
 547 static int i802_get_rts(void *priv, int *rts)
 548 {
 549         struct i802_driver_data *drv = priv;
 550         struct iwreq iwr;
 551
 552         memset(&iwr, 0, sizeof(iwr));
 553         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 554
 555         if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
 556                 perror("ioctl[SIOCGIWRTS]");
 557                 return -1;
 558         }
 559
 560         *rts = iwr.u.rts.value;
 561
 562         return 0;
 563 }
 564
 565
 566 static int i802_set_frag(void *priv, int frag)
 567 {
 568         struct i802_driver_data *drv = priv;
 569         struct iwreq iwr;
 570
 571         memset(&iwr, 0, sizeof(iwr));
 572         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 573         iwr.u.frag.value = frag;
 574         iwr.u.frag.fixed = 1;
 575
 576         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 577                 perror("ioctl[SIOCSIWFRAG]");
 578                 return -1;
 579         }
 580
 581         return 0;
 582 }
 583
 584
 585 static int i802_get_frag(void *priv, int *frag)
 586 {
 587         struct i802_driver_data *drv = priv;
 588         struct iwreq iwr;
 589
 590         memset(&iwr, 0, sizeof(iwr));
 591         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 592
 593         if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
 594                 perror("ioctl[SIOCGIWFRAG]");
 595                 return -1;
 596         }
 597
 598         *frag = iwr.u.frag.value;
 599
 600         return 0;
 601 }
 602
 603
 604 static int i802_set_retry(void *priv, int short_retry, int long_retry)
 605 {
 606         struct i802_driver_data *drv = priv;
 607         struct iwreq iwr;
 608
 609         memset(&iwr, 0, sizeof(iwr));
 610         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 611
 612         iwr.u.retry.value = short_retry;
 613         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 614         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 615                 perror("ioctl[SIOCSIWRETRY(short)]");
 616                 return -1;
 617         }
 618
 619         iwr.u.retry.value = long_retry;
 620         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 621         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 622                 perror("ioctl[SIOCSIWRETRY(long)]");
 623                 return -1;
 624         }
 625
 626         return 0;
 627 }
 628
 629
 630 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
 631 {
 632         struct i802_driver_data *drv = priv;
 633         struct iwreq iwr;
 634
 635         memset(&iwr, 0, sizeof(iwr));
 636         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 637
 638         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 639         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 640                 perror("ioctl[SIOCGIWFRAG(short)]");
 641                 return -1;
 642         }
 643         *short_retry = iwr.u.retry.value;
 644
 645         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 646         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 647                 perror("ioctl[SIOCGIWFRAG(long)]");
 648                 return -1;
 649         }
 650         *long_retry = iwr.u.retry.value;
 651
 652         return 0;
 653 }
 654
 655
 656 static int i802_flush(void *priv)
 657 {
 658         struct i802_driver_data *drv = priv;
 659         struct nl_msg *msg;
 660
 661         msg = nlmsg_alloc();
 662         if (!msg)
 663                 return -1;
 664
 665         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 666                     0, NL80211_CMD_DEL_STATION, 0);
 667
 668         /*
 669          * XXX: FIX! this needs to flush all VLANs too
 670          */
 671         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 672                     if_nametoindex(drv->iface));
 673
 674         return send_and_recv_msgs(drv, msg, NULL, NULL);
 675  nla_put_failure:
 676         return -ENOBUFS;
 677 }
 678
 679
 680 static int get_sta_handler(struct nl_msg *msg, void *arg)
 681 {
 682         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 683         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 684         struct hostap_sta_driver_data *data = arg;
 685         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
 686         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
 687                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
 688                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
 689                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
 690         };
 691
 692         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 693                   genlmsg_attrlen(gnlh, 0), NULL);
 694
 695         /*
 696          * TODO: validate the interface and mac address!
 697          * Otherwise, there's a race condition as soon as
 698          * the kernel starts sending station notifications.
 699          */
 700
 701         if (!tb[NL80211_ATTR_STA_INFO]) {
 702                 wpa_printf(MSG_DEBUG, "sta stats missing!");
 703                 return NL_SKIP;
 704         }
 705         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
 706                              tb[NL80211_ATTR_STA_INFO],
 707                              stats_policy)) {
 708                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
 709                 return NL_SKIP;
 710         }
 711
 712         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
 713                 data->inactive_msec =
 714                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
 715         if (stats[NL80211_STA_INFO_RX_BYTES])
 716                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
 717         if (stats[NL80211_STA_INFO_TX_BYTES])
 718                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
 719
 720         return NL_SKIP;
 721 }
 722
 723 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
 724                               const u8 *addr)
 725 {
 726         struct i802_driver_data *drv = priv;
 727         struct nl_msg *msg;
 728
 729         msg = nlmsg_alloc();
 730         if (!msg)
 731                 return -ENOMEM;
 732
 733         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 734                     0, NL80211_CMD_GET_STATION, 0);
 735
 736         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 737         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 738
 739         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
 740  nla_put_failure:
 741         return -ENOBUFS;
 742 }
 743
 744
 745 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
 746                            size_t data_len, int encrypt, const u8 *own_addr)
 747 {
 748         struct i802_driver_data *drv = priv;
 749         struct ieee80211_hdr *hdr;
 750         size_t len;
 751         u8 *pos;
 752         int res;
 753 #if 0 /* FIX */
 754         int qos = sta->flags & WLAN_STA_WME;
 755 #else
 756         int qos = 0;
 757 #endif
 758
 759         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
 760                 data_len;
 761         hdr = os_zalloc(len);
 762         if (hdr == NULL) {
 763                 printf("malloc() failed for i802_send_data(len=%lu)\n",
 764                        (unsigned long) len);
 765                 return -1;
 766         }
 767
 768         hdr->frame_control =
 769                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
 770         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
 771         if (encrypt)
 772                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 773 #if 0 /* To be enabled if qos determination is added above */
 774         if (qos) {
 775                 hdr->frame_control |=
 776                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
 777         }
 778 #endif
 779
 780         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
 781         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 782         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 783         pos = (u8 *) (hdr + 1);
 784
 785 #if 0 /* To be enabled if qos determination is added above */
 786         if (qos) {
 787                 /* add an empty QoS header if needed */
 788                 pos[0] = 0;
 789                 pos[1] = 0;
 790                 pos += 2;
 791         }
 792 #endif
 793
 794         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
 795         pos += sizeof(rfc1042_header);
 796         WPA_PUT_BE16(pos, ETH_P_PAE);
 797         pos += 2;
 798         memcpy(pos, data, data_len);
 799
 800         res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
 801         free(hdr);
 802
 803         if (res < 0) {
 804                 perror("i802_send_eapol: send");
 805                 printf("i802_send_eapol - packet len: %lu - failed\n",
 806                        (unsigned long) len);
 807         }
 808
 809         return res;
 810 }
 811
 812
 813 static int i802_sta_add2(const char *ifname, void *priv,
 814                          struct hostapd_sta_add_params *params)
 815 {
 816         struct i802_driver_data *drv = priv;
 817         struct nl_msg *msg;
 818         int ret = -ENOBUFS;
 819
 820         msg = nlmsg_alloc();
 821         if (!msg)
 822                 return -ENOMEM;
 823
 824         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 825                     0, NL80211_CMD_NEW_STATION, 0);
 826
 827         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 828                     if_nametoindex(drv->iface));
 829         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
 830         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
 831         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
 832                 params->supp_rates);
 833         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
 834                     params->listen_interval);
 835
 836 #ifdef CONFIG_IEEE80211N
 837         if (params->ht_capabilities) {
 838                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
 839                         params->ht_capabilities->length,
 840                         &params->ht_capabilities->data);
 841         }
 842 #endif /* CONFIG_IEEE80211N */
 843
 844         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 845         if (ret == -EEXIST)
 846                 ret = 0;
 847  nla_put_failure:
 848         return ret;
 849 }
 850
 851
 852 static int i802_sta_remove(void *priv, const u8 *addr)
 853 {
 854         struct i802_driver_data *drv = priv;
 855         struct nl_msg *msg;
 856         int ret;
 857
 858         msg = nlmsg_alloc();
 859         if (!msg)
 860                 return -ENOMEM;
 861
 862         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 863                     0, NL80211_CMD_DEL_STATION, 0);
 864
 865         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 866                     if_nametoindex(drv->iface));
 867         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 868
 869         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 870         if (ret == -ENOENT)
 871                 return 0;
 872         return ret;
 873  nla_put_failure:
 874         return -ENOBUFS;
 875 }
 876
 877
 878 static int i802_sta_set_flags(void *priv, const u8 *addr,
 879                               int total_flags, int flags_or, int flags_and)
 880 {
 881         struct i802_driver_data *drv = priv;
 882         struct nl_msg *msg, *flags = NULL;
 883
 884         msg = nlmsg_alloc();
 885         if (!msg)
 886                 return -ENOMEM;
 887
 888         flags = nlmsg_alloc();
 889         if (!flags) {
 890                 nlmsg_free(msg);
 891                 return -ENOMEM;
 892         }
 893
 894         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 895                     0, NL80211_CMD_SET_STATION, 0);
 896
 897         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 898                     if_nametoindex(drv->iface));
 899         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 900
 901         if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
 902                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
 903
 904         if (total_flags & WLAN_STA_WME)
 905                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
 906
 907         if (total_flags & WLAN_STA_SHORT_PREAMBLE)
 908                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
 909
 910         if (total_flags & WLAN_STA_MFP)
 911                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
 912
 913         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
 914                 goto nla_put_failure;
 915
 916         nlmsg_free(flags);
 917
 918         return send_and_recv_msgs(drv, msg, NULL, NULL);
 919  nla_put_failure:
 920         nlmsg_free(flags);
 921         return -ENOBUFS;
 922 }
 923
 924
 925 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
 926 {
 927         return -1;
 928 }
 929
 930
 931 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 932                                     int cw_min, int cw_max, int burst_time)
 933 {
 934         struct i802_driver_data *drv = priv;
 935         struct nl_msg *msg;
 936         struct nlattr *txq, *params;
 937
 938         msg = nlmsg_alloc();
 939         if (!msg)
 940                 return -1;
 941
 942         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 943                     0, NL80211_CMD_SET_WIPHY, 0);
 944
 945         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 946
 947         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
 948         if (!txq)
 949                 goto nla_put_failure;
 950
 951         /* We are only sending parameters for a single TXQ at a time */
 952         params = nla_nest_start(msg, 1);
 953         if (!params)
 954                 goto nla_put_failure;
 955
 956         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
 957         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
 958          * 32 usec, so need to convert the value here. */
 959         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
 960         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
 961         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
 962         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
 963
 964         nla_nest_end(msg, params);
 965
 966         nla_nest_end(msg, txq);
 967
 968         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 969                 return 0;
 970  nla_put_failure:
 971         return -1;
 972 }
 973
 974
 975 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
 976 {
 977         struct nl_msg *msg;
 978
 979         /* stop listening for EAPOL on this interface */
 980         del_ifidx(drv, ifidx);
 981
 982         msg = nlmsg_alloc();
 983         if (!msg)
 984                 goto nla_put_failure;
 985
 986         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 987                     0, NL80211_CMD_DEL_INTERFACE, 0);
 988         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
 989
 990         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 991                 return;
 992  nla_put_failure:
 993         printf("Failed to remove interface.\n");
 994 }
 995
 996
 997 static int nl80211_create_iface(struct i802_driver_data *drv,
 998                                 const char *ifname,
 999                                 enum nl80211_iftype iftype,
1000                                 const u8 *addr)
1001 {
1002         struct nl_msg *msg, *flags = NULL;
1003         int ifidx;
1004         struct ifreq ifreq;
1005         struct iwreq iwr;
1006         int ret = -ENOBUFS;
1007
1008         msg = nlmsg_alloc();
1009         if (!msg)
1010                 return -1;
1011
1012         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1013                     0, NL80211_CMD_NEW_INTERFACE, 0);
1014         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1015         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1016         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1017
1018         if (iftype == NL80211_IFTYPE_MONITOR) {
1019                 int err;
1020
1021                 flags = nlmsg_alloc();
1022                 if (!flags)
1023                         goto nla_put_failure;
1024
1025                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1026
1027                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1028
1029                 nlmsg_free(flags);
1030
1031                 if (err)
1032                         goto nla_put_failure;
1033         }
1034
1035         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1036         if (ret) {
1037  nla_put_failure:
1038                 printf("Failed to create interface %s.\n", ifname);
1039                 return ret;
1040         }
1041
1042         ifidx = if_nametoindex(ifname);
1043
1044         if (ifidx <= 0)
1045                 return -1;
1046
1047         /* start listening for EAPOL on this interface */
1048         add_ifidx(drv, ifidx);
1049
1050         if (addr) {
1051                 switch (iftype) {
1052                 case NL80211_IFTYPE_AP:
1053                         os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1054                         memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1055                         ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1056
1057                         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1058                                 nl80211_remove_iface(drv, ifidx);
1059                                 return -1;
1060                         }
1061                         break;
1062                 case NL80211_IFTYPE_WDS:
1063                         memset(&iwr, 0, sizeof(iwr));
1064                         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1065                         iwr.u.addr.sa_family = ARPHRD_ETHER;
1066                         memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1067                         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1068                                 return -1;
1069                         break;
1070                 default:
1071                         /* nothing */
1072                         break;
1073                 }
1074         }
1075
1076         return ifidx;
1077 }
1078
1079
1080 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1081 {
1082         int ifidx;
1083
1084         /*
1085          * The kernel supports that when the low-level driver does,
1086          * but we currently don't because we need per-BSS data that
1087          * currently we can't handle easily.
1088          */
1089         return -1;
1090
1091         ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1092         if (ifidx < 0)
1093                 return -1;
1094         if (hostapd_set_iface_flags(priv, ifname, 1)) {
1095                 nl80211_remove_iface(priv, ifidx);
1096                 return -1;
1097         }
1098         return 0;
1099 }
1100
1101
1102 static int i802_bss_remove(void *priv, const char *ifname)
1103 {
1104         nl80211_remove_iface(priv, if_nametoindex(ifname));
1105         return 0;
1106 }
1107
1108
1109 static int i802_set_beacon(const char *iface, void *priv,
1110                            u8 *head, size_t head_len,
1111                            u8 *tail, size_t tail_len)
1112 {
1113         struct i802_driver_data *drv = priv;
1114         struct nl_msg *msg;
1115         u8 cmd = NL80211_CMD_NEW_BEACON;
1116         int ret;
1117
1118         msg = nlmsg_alloc();
1119         if (!msg)
1120                 return -ENOMEM;
1121
1122         if (drv->beacon_set)
1123                 cmd = NL80211_CMD_SET_BEACON;
1124
1125         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1126                     0, cmd, 0);
1127         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1128         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1129         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1130         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1131
1132         if (!drv->dtim_period)
1133                 drv->dtim_period = 2;
1134         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1135
1136         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1137         if (!ret)
1138                 drv->beacon_set = 1;
1139         return ret;
1140  nla_put_failure:
1141         return -ENOBUFS;
1142 }
1143
1144
1145 static int i802_del_beacon(struct i802_driver_data *drv)
1146 {
1147         struct nl_msg *msg;
1148
1149         msg = nlmsg_alloc();
1150         if (!msg)
1151                 return -ENOMEM;
1152
1153         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1154                     0, NL80211_CMD_DEL_BEACON, 0);
1155         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1156
1157         return send_and_recv_msgs(drv, msg, NULL, NULL);
1158  nla_put_failure:
1159         return -ENOBUFS;
1160 }
1161
1162
1163 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1164 {
1165         struct i802_driver_data *drv = priv;
1166
1167         /*
1168          * FIXME: This needs to be per interface (BSS)
1169          */
1170         drv->ieee802_1x_active = enabled;
1171         return 0;
1172 }
1173
1174
1175 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1176 {
1177         struct i802_driver_data *drv = priv;
1178         struct iwreq iwr;
1179
1180         memset(&iwr, 0, sizeof(iwr));
1181
1182         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1183         iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1184         iwr.u.param.value = enabled;
1185
1186         ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1187
1188         /* ignore errors, the kernel/driver might not care */
1189         return 0;
1190 }
1191
1192
1193 static int i802_set_internal_bridge(void *priv, int value)
1194 {
1195         return -1;
1196 }
1197
1198
1199 static int i802_set_beacon_int(void *priv, int value)
1200 {
1201         struct i802_driver_data *drv = priv;
1202         struct nl_msg *msg;
1203
1204         drv->beacon_int = value;
1205
1206         if (!drv->beacon_set)
1207                 return 0;
1208
1209         msg = nlmsg_alloc();
1210         if (!msg)
1211                 return -ENOMEM;
1212
1213         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1214                     0, NL80211_CMD_SET_BEACON, 0);
1215         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1216
1217         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1218
1219         return send_and_recv_msgs(drv, msg, NULL, NULL);
1220  nla_put_failure:
1221         return -ENOBUFS;
1222 }
1223
1224
1225 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1226 {
1227         struct i802_driver_data *drv = priv;
1228         struct nl_msg *msg;
1229
1230         msg = nlmsg_alloc();
1231         if (!msg)
1232                 return -ENOMEM;
1233
1234         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1235                     0, NL80211_CMD_SET_BEACON, 0);
1236         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1237
1238         drv->dtim_period = value;
1239         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1240
1241         return send_and_recv_msgs(drv, msg, NULL, NULL);
1242  nla_put_failure:
1243         return -ENOBUFS;
1244 }
1245
1246
1247 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1248 {
1249         struct i802_driver_data *drv = priv;
1250         struct nl_msg *msg;
1251
1252         msg = nlmsg_alloc();
1253         if (!msg)
1254                 return -ENOMEM;
1255
1256         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1257                     NL80211_CMD_SET_BSS, 0);
1258
1259         if (cts >= 0)
1260                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1261         if (preamble >= 0)
1262                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1263         if (slot >= 0)
1264                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1265
1266         /* TODO: multi-BSS support */
1267         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1268
1269         return send_and_recv_msgs(drv, msg, NULL, NULL);
1270  nla_put_failure:
1271         return -ENOBUFS;
1272 }
1273
1274
1275 static int i802_set_cts_protect(void *priv, int value)
1276 {
1277         return i802_set_bss(priv, value, -1, -1);
1278 }
1279
1280
1281 static int i802_set_preamble(void *priv, int value)
1282 {
1283         return i802_set_bss(priv, -1, value, -1);
1284 }
1285
1286
1287 static int i802_set_short_slot_time(void *priv, int value)
1288 {
1289         return i802_set_bss(priv, -1, -1, value);
1290 }
1291
1292
1293 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1294 {
1295         switch (type) {
1296         case HOSTAPD_IF_VLAN:
1297                 return NL80211_IFTYPE_AP_VLAN;
1298         case HOSTAPD_IF_WDS:
1299                 return NL80211_IFTYPE_WDS;
1300         }
1301         return -1;
1302 }
1303
1304
1305 static int i802_if_add(const char *iface, void *priv,
1306                        enum hostapd_driver_if_type type, char *ifname,
1307                        const u8 *addr)
1308 {
1309         if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1310                 return -1;
1311         return 0;
1312 }
1313
1314
1315 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1316                           char *ifname, const u8 *addr)
1317 {
1318         /* unused at the moment */
1319         return -1;
1320 }
1321
1322
1323 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1324                           const char *ifname, const u8 *addr)
1325 {
1326         nl80211_remove_iface(priv, if_nametoindex(ifname));
1327         return 0;
1328 }
1329
1330
1331 struct phy_info_arg {
1332         u16 *num_modes;
1333         struct hostapd_hw_modes *modes;
1334 };
1335
1336 static int phy_info_handler(struct nl_msg *msg, void *arg)
1337 {
1338         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1339         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1340         struct phy_info_arg *phy_info = arg;
1341
1342         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1343
1344         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1345         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1346                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1347                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1348                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1349                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1350                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1351                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1352         };
1353
1354         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1355         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1356                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1357                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1358         };
1359
1360         struct nlattr *nl_band;
1361         struct nlattr *nl_freq;
1362         struct nlattr *nl_rate;
1363         int rem_band, rem_freq, rem_rate;
1364         struct hostapd_hw_modes *mode;
1365         int idx, mode_is_set;
1366
1367         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1368                   genlmsg_attrlen(gnlh, 0), NULL);
1369
1370         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1371                 return NL_SKIP;
1372
1373         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1374                 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1375                 if (!mode)
1376                         return NL_SKIP;
1377                 phy_info->modes = mode;
1378
1379                 mode_is_set = 0;
1380
1381                 mode = &phy_info->modes[*(phy_info->num_modes)];
1382                 memset(mode, 0, sizeof(*mode));
1383                 *(phy_info->num_modes) += 1;
1384
1385                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1386                           nla_len(nl_band), NULL);
1387
1388                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1389                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1390                                   nla_len(nl_freq), freq_policy);
1391                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1392                                 continue;
1393                         mode->num_channels++;
1394                 }
1395
1396                 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1397                 if (!mode->channels)
1398                         return NL_SKIP;
1399
1400                 idx = 0;
1401
1402                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1403                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1404                                   nla_len(nl_freq), freq_policy);
1405                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1406                                 continue;
1407
1408                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1409                         mode->channels[idx].flag = 0;
1410
1411                         if (!mode_is_set) {
1412                                 /* crude heuristic */
1413                                 if (mode->channels[idx].freq < 4000)
1414                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
1415                                 else
1416                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
1417                                 mode_is_set = 1;
1418                         }
1419
1420                         /* crude heuristic */
1421                         if (mode->channels[idx].freq < 4000)
1422                                 if (mode->channels[idx].freq == 2848)
1423                                         mode->channels[idx].chan = 14;
1424                                 else
1425                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1426                         else
1427                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1428
1429                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1430                                 mode->channels[idx].flag |=
1431                                         HOSTAPD_CHAN_DISABLED;
1432                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1433                                 mode->channels[idx].flag |=
1434                                         HOSTAPD_CHAN_PASSIVE_SCAN;
1435                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1436                                 mode->channels[idx].flag |=
1437                                         HOSTAPD_CHAN_NO_IBSS;
1438                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1439                                 mode->channels[idx].flag |=
1440                                         HOSTAPD_CHAN_RADAR;
1441
1442                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1443                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1444                                 mode->channels[idx].max_tx_power =
1445                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1446
1447                         idx++;
1448                 }
1449
1450                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1451                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1452                                   nla_len(nl_rate), rate_policy);
1453                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1454                                 continue;
1455                         mode->num_rates++;
1456                 }
1457
1458                 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1459                 if (!mode->rates)
1460                         return NL_SKIP;
1461
1462                 idx = 0;
1463
1464                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1465                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1466                                   nla_len(nl_rate), rate_policy);
1467                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1468                                 continue;
1469                         mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1470
1471                         /* crude heuristic */
1472                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1473                             mode->rates[idx].rate > 200)
1474                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
1475
1476                         if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1477                                 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1478
1479                         idx++;
1480                 }
1481         }
1482
1483         return NL_SKIP;
1484 }
1485
1486 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1487                                              u16 *num_modes)
1488 {
1489         u16 m;
1490         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1491         int i, mode11g_idx = -1;
1492
1493         /* If only 802.11g mode is included, use it to construct matching
1494          * 802.11b mode data. */
1495
1496         for (m = 0; m < *num_modes; m++) {
1497                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1498                         return modes; /* 802.11b already included */
1499                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1500                         mode11g_idx = m;
1501         }
1502
1503         if (mode11g_idx < 0)
1504                 return modes; /* 2.4 GHz band not supported at all */
1505
1506         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1507         if (nmodes == NULL)
1508                 return modes; /* Could not add 802.11b mode */
1509
1510         mode = &nmodes[*num_modes];
1511         os_memset(mode, 0, sizeof(*mode));
1512         (*num_modes)++;
1513         modes = nmodes;
1514
1515         mode->mode = HOSTAPD_MODE_IEEE80211B;
1516
1517         mode11g = &modes[mode11g_idx];
1518         mode->num_channels = mode11g->num_channels;
1519         mode->channels = os_malloc(mode11g->num_channels *
1520                                    sizeof(struct hostapd_channel_data));
1521         if (mode->channels == NULL) {
1522                 (*num_modes)--;
1523                 return modes; /* Could not add 802.11b mode */
1524         }
1525         os_memcpy(mode->channels, mode11g->channels,
1526                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1527
1528         mode->num_rates = 0;
1529         mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1530         if (mode->rates == NULL) {
1531                 os_free(mode->channels);
1532                 (*num_modes)--;
1533                 return modes; /* Could not add 802.11b mode */
1534         }
1535
1536         for (i = 0; i < mode11g->num_rates; i++) {
1537                 if (mode11g->rates[i].rate > 110 ||
1538                     mode11g->rates[i].flags &
1539                     (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1540                         continue;
1541                 mode->rates[mode->num_rates] = mode11g->rates[i];
1542                 mode->num_rates++;
1543                 if (mode->num_rates == 4)
1544                         break;
1545         }
1546
1547         if (mode->num_rates == 0) {
1548                 os_free(mode->channels);
1549                 os_free(mode->rates);
1550                 (*num_modes)--;
1551                 return modes; /* No 802.11b rates */
1552         }
1553
1554         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1555                    "information");
1556
1557         return modes;
1558 }
1559
1560 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1561                                                          u16 *num_modes,
1562                                                          u16 *flags)
1563 {
1564         struct i802_driver_data *drv = priv;
1565         struct nl_msg *msg;
1566         struct phy_info_arg result = {
1567                 .num_modes = num_modes,
1568                 .modes = NULL,
1569         };
1570
1571         *num_modes = 0;
1572         *flags = 0;
1573
1574         msg = nlmsg_alloc();
1575         if (!msg)
1576                 return NULL;
1577
1578         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1579                     0, NL80211_CMD_GET_WIPHY, 0);
1580
1581         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1582
1583         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1584                 return i802_add_11b(result.modes, num_modes);
1585  nla_put_failure:
1586         return NULL;
1587 }
1588
1589
1590 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1591                              const char *ifname, int vlan_id)
1592 {
1593         struct i802_driver_data *drv = priv;
1594         struct nl_msg *msg;
1595
1596         msg = nlmsg_alloc();
1597         if (!msg)
1598                 return -ENOMEM;
1599
1600         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1601                     0, NL80211_CMD_SET_STATION, 0);
1602
1603         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1604                     if_nametoindex(drv->iface));
1605         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1606         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1607                     if_nametoindex(ifname));
1608
1609         return send_and_recv_msgs(drv, msg, NULL, NULL);
1610  nla_put_failure:
1611         return -ENOBUFS;
1612 }
1613
1614
1615 static int i802_set_country(void *priv, const char *country)
1616 {
1617         struct i802_driver_data *drv = priv;
1618         struct nl_msg *msg;
1619         char alpha2[3];
1620
1621         msg = nlmsg_alloc();
1622         if (!msg)
1623                 return -ENOMEM;
1624
1625         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1626                     0, NL80211_CMD_REQ_SET_REG, 0);
1627
1628         alpha2[0] = country[0];
1629         alpha2[1] = country[1];
1630         alpha2[2] = '\0';
1631         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1632
1633         return send_and_recv_msgs(drv, msg, NULL, NULL);
1634  nla_put_failure:
1635         return -ENOBUFS;
1636 }
1637
1638
1639 static void handle_unknown_sta(struct i802_driver_data *drv, u8 *ta)
1640 {
1641         struct sta_info *sta;
1642
1643         sta = ap_get_sta(drv->hapd, ta);
1644         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1645                 printf("Data/PS-poll frame from not associated STA "
1646                        MACSTR "\n", MAC2STR(ta));
1647                 if (sta && (sta->flags & WLAN_STA_AUTH))
1648                         i802_sta_disassoc(
1649                                 drv, ta,
1650                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1651                 else
1652                         i802_sta_deauth(
1653                                 drv, ta,
1654                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1655         }
1656 }
1657
1658
1659 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1660                                int ok)
1661 {
1662         struct ieee80211_hdr *hdr;
1663         u16 fc, type, stype;
1664         struct sta_info *sta;
1665
1666         hdr = (struct ieee80211_hdr *) buf;
1667         fc = le_to_host16(hdr->frame_control);
1668
1669         type = WLAN_FC_GET_TYPE(fc);
1670         stype = WLAN_FC_GET_STYPE(fc);
1671
1672         switch (type) {
1673         case WLAN_FC_TYPE_MGMT:
1674                 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1675                            ok ? "ACK" : "fail");
1676                 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1677                 break;
1678         case WLAN_FC_TYPE_CTRL:
1679                 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1680                            ok ? "ACK" : "fail");
1681                 break;
1682         case WLAN_FC_TYPE_DATA:
1683                 wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
1684                            ok ? "ACK" : "fail");
1685                 sta = ap_get_sta(hapd, hdr->addr1);
1686                 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1687                         wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1688                                    "activity poll", MAC2STR(sta->addr),
1689                                    ok ? "ACKed" : "did not ACK");
1690                         if (ok)
1691                                 sta->flags &= ~WLAN_STA_PENDING_POLL;
1692                 }
1693                 if (sta)
1694                         ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1695                 break;
1696         default:
1697                 printf("unknown TX callback frame type %d\n", type);
1698                 break;
1699         }
1700 }
1701
1702
1703 static void handle_frame(struct i802_driver_data *drv,
1704                          struct hostapd_iface *iface, u8 *buf, size_t len,
1705                          struct hostapd_frame_info *hfi,
1706                          enum ieee80211_msg_type msg_type)
1707 {
1708         struct ieee80211_hdr *hdr;
1709         u16 fc, type, stype;
1710         size_t data_len = len;
1711         struct hostapd_data *hapd = NULL;
1712         int broadcast_bssid = 0;
1713         size_t i;
1714         u8 *bssid;
1715
1716         /*
1717          * PS-Poll frames are 16 bytes. All other frames are
1718          * 24 bytes or longer.
1719          */
1720         if (len < 16)
1721                 return;
1722
1723         hdr = (struct ieee80211_hdr *) buf;
1724         fc = le_to_host16(hdr->frame_control);
1725
1726         type = WLAN_FC_GET_TYPE(fc);
1727         stype = WLAN_FC_GET_STYPE(fc);
1728
1729         switch (type) {
1730         case WLAN_FC_TYPE_DATA:
1731                 if (len < 24)
1732                         return;
1733                 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1734                 case WLAN_FC_TODS:
1735                         bssid = hdr->addr1;
1736                         break;
1737                 default:
1738                         /* discard */
1739                         return;
1740                 }
1741                 break;
1742         case WLAN_FC_TYPE_CTRL:
1743                 /* discard non-ps-poll frames */
1744                 if (stype != WLAN_FC_STYPE_PSPOLL)
1745                         return;
1746                 bssid = hdr->addr1;
1747                 break;
1748         case WLAN_FC_TYPE_MGMT:
1749                 bssid = hdr->addr3;
1750                 break;
1751         default:
1752                 /* discard */
1753                 return;
1754         }
1755
1756         /* find interface frame belongs to */
1757         for (i = 0; i < iface->num_bss; i++) {
1758                 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1759                         hapd = iface->bss[i];
1760                         break;
1761                 }
1762         }
1763
1764         if (hapd == NULL) {
1765                 hapd = iface->bss[0];
1766
1767                 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1768                     bssid[2] != 0xff || bssid[3] != 0xff ||
1769                     bssid[4] != 0xff || bssid[5] != 0xff) {
1770                         /*
1771                          * Unknown BSSID - drop frame if this is not from
1772                          * passive scanning or a beacon (at least ProbeReq
1773                          * frames to other APs may be allowed through RX
1774                          * filtering in the wlan hw/driver)
1775                          */
1776                         if ((type != WLAN_FC_TYPE_MGMT ||
1777                              stype != WLAN_FC_STYPE_BEACON))
1778                                 return;
1779                 } else
1780                         broadcast_bssid = 1;
1781         }
1782
1783         switch (msg_type) {
1784         case ieee80211_msg_normal:
1785                 /* continue processing */
1786                 break;
1787         case ieee80211_msg_tx_callback_ack:
1788                 handle_tx_callback(hapd, buf, data_len, 1);
1789                 return;
1790         case ieee80211_msg_tx_callback_fail:
1791                 handle_tx_callback(hapd, buf, data_len, 0);
1792                 return;
1793         }
1794
1795         switch (type) {
1796         case WLAN_FC_TYPE_MGMT:
1797                 if (stype != WLAN_FC_STYPE_BEACON &&
1798                     stype != WLAN_FC_STYPE_PROBE_REQ)
1799                         wpa_printf(MSG_MSGDUMP, "MGMT");
1800                 if (broadcast_bssid) {
1801                         for (i = 0; i < iface->num_bss; i++)
1802                                 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1803                                                 stype, hfi);
1804                 } else
1805                         ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1806                 break;
1807         case WLAN_FC_TYPE_CTRL:
1808                 /* can only get here with PS-Poll frames */
1809                 wpa_printf(MSG_DEBUG, "CTRL");
1810                 handle_unknown_sta(drv, hdr->addr2);
1811                 break;
1812         case WLAN_FC_TYPE_DATA:
1813                 handle_unknown_sta(drv, hdr->addr2);
1814                 break;
1815         }
1816 }
1817
1818
1819 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1820 {
1821         struct i802_driver_data *drv = eloop_ctx;
1822         struct hostapd_data *hapd = drv->hapd;
1823         struct sockaddr_ll lladdr;
1824         unsigned char buf[3000];
1825         int len;
1826         socklen_t fromlen = sizeof(lladdr);
1827
1828         len = recvfrom(sock, buf, sizeof(buf), 0,
1829                        (struct sockaddr *)&lladdr, &fromlen);
1830         if (len < 0) {
1831                 perror("recv");
1832                 return;
1833         }
1834
1835         if (have_ifidx(drv, lladdr.sll_ifindex))
1836                 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1837 }
1838
1839
1840 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1841 {
1842         struct i802_driver_data *drv = eloop_ctx;
1843         int len;
1844         unsigned char buf[3000];
1845         struct hostapd_data *hapd = drv->hapd;
1846         struct ieee80211_radiotap_iterator iter;
1847         int ret;
1848         struct hostapd_frame_info hfi;
1849         int injected = 0, failed = 0, msg_type, rxflags = 0;
1850
1851         len = recv(sock, buf, sizeof(buf), 0);
1852         if (len < 0) {
1853                 perror("recv");
1854                 return;
1855         }
1856
1857         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1858                 printf("received invalid radiotap frame\n");
1859                 return;
1860         }
1861
1862         memset(&hfi, 0, sizeof(hfi));
1863
1864         while (1) {
1865                 ret = ieee80211_radiotap_iterator_next(&iter);
1866                 if (ret == -ENOENT)
1867                         break;
1868                 if (ret) {
1869                         printf("received invalid radiotap frame (%d)\n", ret);
1870                         return;
1871                 }
1872                 switch (iter.this_arg_index) {
1873                 case IEEE80211_RADIOTAP_FLAGS:
1874                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1875                                 len -= 4;
1876                         break;
1877                 case IEEE80211_RADIOTAP_RX_FLAGS:
1878                         rxflags = 1;
1879                         break;
1880                 case IEEE80211_RADIOTAP_TX_FLAGS:
1881                         injected = 1;
1882                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1883                                         IEEE80211_RADIOTAP_F_TX_FAIL;
1884                         break;
1885                 case IEEE80211_RADIOTAP_DATA_RETRIES:
1886                         break;
1887                 case IEEE80211_RADIOTAP_CHANNEL:
1888                         /* TODO convert from freq/flags to channel number
1889                         hfi.channel = XXX;
1890                         hfi.phytype = XXX;
1891                          */
1892                         break;
1893                 case IEEE80211_RADIOTAP_RATE:
1894                         hfi.datarate = *iter.this_arg * 5;
1895                         break;
1896                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1897                         hfi.ssi_signal = *iter.this_arg;
1898                         break;
1899                 }
1900         }
1901
1902         if (rxflags && injected)
1903                 return;
1904
1905         if (!injected)
1906                 msg_type = ieee80211_msg_normal;
1907         else if (failed)
1908                 msg_type = ieee80211_msg_tx_callback_fail;
1909         else
1910                 msg_type = ieee80211_msg_tx_callback_ack;
1911
1912         handle_frame(drv, hapd->iface, buf + iter.max_length,
1913                      len - iter.max_length, &hfi, msg_type);
1914 }
1915
1916
1917 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
1918 {
1919         char buf[IFNAMSIZ];
1920         struct sockaddr_ll ll;
1921         int optval;
1922         socklen_t optlen;
1923
1924         snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
1925         buf[IFNAMSIZ - 1] = '\0';
1926
1927         drv->monitor_ifidx =
1928                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
1929
1930         if (drv->monitor_ifidx < 0)
1931                 return -1;
1932
1933         if (hostapd_set_iface_flags(drv, buf, 1))
1934                 goto error;
1935
1936         memset(&ll, 0, sizeof(ll));
1937         ll.sll_family = AF_PACKET;
1938         ll.sll_ifindex = drv->monitor_ifidx;
1939         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
1940         if (drv->monitor_sock < 0) {
1941                 perror("socket[PF_PACKET,SOCK_RAW]");
1942                 goto error;
1943         }
1944
1945         if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
1946                  sizeof(ll)) < 0) {
1947                 perror("monitor socket bind");
1948                 goto error;
1949         }
1950
1951         optlen = sizeof(optval);
1952         optval = 20;
1953         if (setsockopt
1954             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
1955                 perror("Failed to set socket priority");
1956                 goto error;
1957         }
1958
1959         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
1960                                      drv, NULL)) {
1961                 printf("Could not register monitor read socket\n");
1962                 goto error;
1963         }
1964
1965         return 0;
1966  error:
1967         nl80211_remove_iface(drv, drv->monitor_ifidx);
1968         return -1;
1969 }
1970
1971
1972 static int nl80211_set_master_mode(struct i802_driver_data *drv,
1973                                    const char *ifname)
1974 {
1975         struct nl_msg *msg;
1976         int ret = -ENOBUFS;
1977
1978         msg = nlmsg_alloc();
1979         if (!msg)
1980                 return -ENOMEM;
1981
1982         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1983                     0, NL80211_CMD_SET_INTERFACE, 0);
1984         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1985                     if_nametoindex(ifname));
1986         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
1987
1988         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1989         if (!ret)
1990                 return 0;
1991  nla_put_failure:
1992         wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
1993                    "mode.", ifname);
1994         return ret;
1995 }
1996
1997
1998 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
1999 {
2000         struct ifreq ifr;
2001         struct sockaddr_ll addr;
2002
2003         drv->ioctl_sock = -1;
2004
2005         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2006         if (drv->ioctl_sock < 0) {
2007                 perror("socket[PF_INET,SOCK_DGRAM]");
2008                 return -1;
2009         }
2010
2011         /* start listening for EAPOL on the default AP interface */
2012         add_ifidx(drv, if_nametoindex(drv->iface));
2013
2014         if (hostapd_set_iface_flags(drv, drv->iface, 0))
2015                 return -1;
2016
2017         if (bssid) {
2018                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2019                 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2020                 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2021
2022                 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2023                         perror("ioctl(SIOCSIFHWADDR)");
2024                         return -1;
2025                 }
2026         }
2027
2028         /*
2029          * initialise generic netlink and nl80211
2030          */
2031         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2032         if (!drv->nl_cb) {
2033                 printf("Failed to allocate netlink callbacks.\n");
2034                 return -1;
2035         }
2036
2037         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2038         if (!drv->nl_handle) {
2039                 printf("Failed to allocate netlink handle.\n");
2040                 return -1;
2041         }
2042
2043         if (genl_connect(drv->nl_handle)) {
2044                 printf("Failed to connect to generic netlink.\n");
2045                 return -1;
2046         }
2047
2048 #ifdef CONFIG_LIBNL20
2049         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
2050                 printf("Failed to allocate generic netlink cache.\n");
2051                 return -1;
2052         }
2053 #else /* CONFIG_LIBNL20 */
2054         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2055         if (!drv->nl_cache) {
2056                 printf("Failed to allocate generic netlink cache.\n");
2057                 return -1;
2058         }
2059 #endif /* CONFIG_LIBNL20 */
2060
2061         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2062         if (!drv->nl80211) {
2063                 printf("nl80211 not found.\n");
2064                 return -1;
2065         }
2066
2067         /* Initialise a monitor interface */
2068         if (nl80211_create_monitor_interface(drv))
2069                 return -1;
2070
2071         if (nl80211_set_master_mode(drv, drv->iface))
2072                 goto fail1;
2073
2074         if (hostapd_set_iface_flags(drv, drv->iface, 1))
2075                 goto fail1;
2076
2077         memset(&addr, 0, sizeof(addr));
2078         addr.sll_family = AF_PACKET;
2079         addr.sll_ifindex = ifr.ifr_ifindex;
2080         wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2081                    addr.sll_ifindex);
2082
2083         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2084         if (drv->eapol_sock < 0) {
2085                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2086                 goto fail1;
2087         }
2088
2089         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2090         {
2091                 printf("Could not register read socket for eapol\n");
2092                 return -1;
2093         }
2094
2095         memset(&ifr, 0, sizeof(ifr));
2096         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2097         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2098                 perror("ioctl(SIOCGIFHWADDR)");
2099                 goto fail1;
2100         }
2101
2102         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2103                 printf("Invalid HW-addr family 0x%04x\n",
2104                        ifr.ifr_hwaddr.sa_family);
2105                 goto fail1;
2106         }
2107         memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2108
2109         return 0;
2110
2111 fail1:
2112         nl80211_remove_iface(drv, drv->monitor_ifidx);
2113         return -1;
2114 }
2115
2116
2117 static int i802_get_inact_sec(void *priv, const u8 *addr)
2118 {
2119         struct hostap_sta_driver_data data;
2120         int ret;
2121
2122         data.inactive_msec = (unsigned long) -1;
2123         ret = i802_read_sta_data(priv, &data, addr);
2124         if (ret || data.inactive_msec == (unsigned long) -1)
2125                 return -1;
2126         return data.inactive_msec / 1000;
2127 }
2128
2129
2130 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2131 {
2132 #if 0
2133         /* TODO */
2134 #endif
2135         return 0;
2136 }
2137
2138
2139 static void
2140 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2141                                        char *custom)
2142 {
2143         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2144
2145         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2146                 char *pos;
2147                 u8 addr[ETH_ALEN];
2148                 pos = strstr(custom, "addr=");
2149                 if (pos == NULL) {
2150                         wpa_printf(MSG_DEBUG,
2151                                    "MLME-MICHAELMICFAILURE.indication "
2152                                    "without sender address ignored");
2153                         return;
2154                 }
2155                 pos += 5;
2156                 if (hwaddr_aton(pos, addr) == 0) {
2157                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2158                 } else {
2159                         wpa_printf(MSG_DEBUG,
2160                                    "MLME-MICHAELMICFAILURE.indication "
2161                                    "with invalid MAC address");
2162                 }
2163         }
2164 }
2165
2166
2167 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2168                                             char *data, int len)
2169 {
2170         struct iw_event iwe_buf, *iwe = &iwe_buf;
2171         char *pos, *end, *custom, *buf;
2172
2173         pos = data;
2174         end = data + len;
2175
2176         while (pos + IW_EV_LCP_LEN <= end) {
2177                 /* Event data may be unaligned, so make a local, aligned copy
2178                  * before processing. */
2179                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2180                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2181                            iwe->cmd, iwe->len);
2182                 if (iwe->len <= IW_EV_LCP_LEN)
2183                         return;
2184
2185                 custom = pos + IW_EV_POINT_LEN;
2186                 if (drv->we_version > 18 &&
2187                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
2188                      iwe->cmd == IWEVCUSTOM)) {
2189                         /* WE-19 removed the pointer from struct iw_point */
2190                         char *dpos = (char *) &iwe_buf.u.data.length;
2191                         int dlen = dpos - (char *) &iwe_buf;
2192                         memcpy(dpos, pos + IW_EV_LCP_LEN,
2193                                sizeof(struct iw_event) - dlen);
2194                 } else {
2195                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2196                         custom += IW_EV_POINT_OFF;
2197                 }
2198
2199                 switch (iwe->cmd) {
2200                 case IWEVCUSTOM:
2201                         if (custom + iwe->u.data.length > end)
2202                                 return;
2203                         buf = malloc(iwe->u.data.length + 1);
2204                         if (buf == NULL)
2205                                 return;
2206                         memcpy(buf, custom, iwe->u.data.length);
2207                         buf[iwe->u.data.length] = '\0';
2208                         hostapd_wireless_event_wireless_custom(drv, buf);
2209                         free(buf);
2210                         break;
2211                 }
2212
2213                 pos += iwe->len;
2214         }
2215 }
2216
2217
2218 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2219                                                struct nlmsghdr *h, int len)
2220 {
2221         struct ifinfomsg *ifi;
2222         int attrlen, nlmsg_len, rta_len;
2223         struct rtattr *attr;
2224
2225         if (len < (int) sizeof(*ifi))
2226                 return;
2227
2228         ifi = NLMSG_DATA(h);
2229
2230         /* TODO: use ifi->ifi_index to filter out wireless events from other
2231          * interfaces */
2232
2233         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2234
2235         attrlen = h->nlmsg_len - nlmsg_len;
2236         if (attrlen < 0)
2237                 return;
2238
2239         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
2240
2241         rta_len = RTA_ALIGN(sizeof(struct rtattr));
2242         while (RTA_OK(attr, attrlen)) {
2243                 if (attr->rta_type == IFLA_WIRELESS) {
2244                         hostapd_wireless_event_wireless(
2245                                 drv, ((char *) attr) + rta_len,
2246                                 attr->rta_len - rta_len);
2247                 }
2248                 attr = RTA_NEXT(attr, attrlen);
2249         }
2250 }
2251
2252
2253 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2254                                            void *sock_ctx)
2255 {
2256         char buf[256];
2257         int left;
2258         struct sockaddr_nl from;
2259         socklen_t fromlen;
2260         struct nlmsghdr *h;
2261         struct i802_driver_data *drv = eloop_ctx;
2262
2263         fromlen = sizeof(from);
2264         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2265                         (struct sockaddr *) &from, &fromlen);
2266         if (left < 0) {
2267                 if (errno != EINTR && errno != EAGAIN)
2268                         perror("recvfrom(netlink)");
2269                 return;
2270         }
2271
2272         h = (struct nlmsghdr *) buf;
2273         while (left >= (int) sizeof(*h)) {
2274                 int len, plen;
2275
2276                 len = h->nlmsg_len;
2277                 plen = len - sizeof(*h);
2278                 if (len > left || plen < 0) {
2279                         printf("Malformed netlink message: "
2280                                "len=%d left=%d plen=%d\n",
2281                                len, left, plen);
2282                         break;
2283                 }
2284
2285                 switch (h->nlmsg_type) {
2286                 case RTM_NEWLINK:
2287                         hostapd_wireless_event_rtm_newlink(drv, h, plen);
2288                         break;
2289                 }
2290
2291                 len = NLMSG_ALIGN(len);
2292                 left -= len;
2293                 h = (struct nlmsghdr *) ((char *) h + len);
2294         }
2295
2296         if (left > 0) {
2297                 printf("%d extra bytes in the end of netlink message\n", left);
2298         }
2299 }
2300
2301
2302 static int hostap_get_we_version(struct i802_driver_data *drv)
2303 {
2304         struct iw_range *range;
2305         struct iwreq iwr;
2306         int minlen;
2307         size_t buflen;
2308
2309         drv->we_version = 0;
2310
2311         /*
2312          * Use larger buffer than struct iw_range in order to allow the
2313          * structure to grow in the future.
2314          */
2315         buflen = sizeof(struct iw_range) + 500;
2316         range = os_zalloc(buflen);
2317         if (range == NULL)
2318                 return -1;
2319
2320         memset(&iwr, 0, sizeof(iwr));
2321         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2322         iwr.u.data.pointer = (caddr_t) range;
2323         iwr.u.data.length = buflen;
2324
2325         minlen = ((char *) &range->enc_capa) - (char *) range +
2326                 sizeof(range->enc_capa);
2327
2328         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2329                 perror("ioctl[SIOCGIWRANGE]");
2330                 free(range);
2331                 return -1;
2332         } else if (iwr.u.data.length >= minlen &&
2333                    range->we_version_compiled >= 18) {
2334                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2335                            "WE(source)=%d enc_capa=0x%x",
2336                            range->we_version_compiled,
2337                            range->we_version_source,
2338                            range->enc_capa);
2339                 drv->we_version = range->we_version_compiled;
2340         }
2341
2342         free(range);
2343         return 0;
2344 }
2345
2346
2347 static int i802_wireless_event_init(void *priv)
2348 {
2349         struct i802_driver_data *drv = priv;
2350         int s;
2351         struct sockaddr_nl local;
2352
2353         hostap_get_we_version(drv);
2354
2355         drv->wext_sock = -1;
2356
2357         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2358         if (s < 0) {
2359                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2360                 return -1;
2361         }
2362
2363         memset(&local, 0, sizeof(local));
2364         local.nl_family = AF_NETLINK;
2365         local.nl_groups = RTMGRP_LINK;
2366         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2367                 perror("bind(netlink)");
2368                 close(s);
2369                 return -1;
2370         }
2371
2372         eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2373                                  NULL);
2374         drv->wext_sock = s;
2375
2376         return 0;
2377 }
2378
2379
2380 static void i802_wireless_event_deinit(void *priv)
2381 {
2382         struct i802_driver_data *drv = priv;
2383         if (drv->wext_sock < 0)
2384                 return;
2385         eloop_unregister_read_sock(drv->wext_sock);
2386         close(drv->wext_sock);
2387 }
2388
2389
2390 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2391 {
2392         struct i802_driver_data *drv = priv;
2393         struct ieee80211_mgmt mgmt;
2394
2395         memset(&mgmt, 0, sizeof(mgmt));
2396         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2397                                           WLAN_FC_STYPE_DEAUTH);
2398         memcpy(mgmt.da, addr, ETH_ALEN);
2399         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2400         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2401         mgmt.u.deauth.reason_code = host_to_le16(reason);
2402         return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2403                                       sizeof(mgmt.u.deauth), 0);
2404 }
2405
2406
2407 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2408 {
2409         struct i802_driver_data *drv = priv;
2410         struct ieee80211_mgmt mgmt;
2411
2412         memset(&mgmt, 0, sizeof(mgmt));
2413         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2414                                           WLAN_FC_STYPE_DISASSOC);
2415         memcpy(mgmt.da, addr, ETH_ALEN);
2416         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2417         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2418         mgmt.u.disassoc.reason_code = host_to_le16(reason);
2419         return  i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2420                                        sizeof(mgmt.u.disassoc), 0);
2421 }
2422
2423
2424 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2425 {
2426         struct i802_driver_data *drv;
2427
2428         drv = os_zalloc(sizeof(struct i802_driver_data));
2429         if (drv == NULL) {
2430                 printf("Could not allocate memory for i802 driver data\n");
2431                 return NULL;
2432         }
2433
2434         drv->hapd = hapd;
2435         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2436
2437         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2438         drv->if_indices = drv->default_if_indices;
2439         drv->bridge = if_nametoindex(hapd->conf->bridge);
2440
2441         if (i802_init_sockets(drv, bssid))
2442                 goto failed;
2443
2444         return drv;
2445
2446 failed:
2447         free(drv);
2448         return NULL;
2449 }
2450
2451
2452 static void *i802_init(struct hostapd_data *hapd)
2453 {
2454         return i802_init_bssid(hapd, NULL);
2455 }
2456
2457
2458 static void i802_deinit(void *priv)
2459 {
2460         struct i802_driver_data *drv = priv;
2461
2462         if (drv->last_freq_ht) {
2463                 /* Clear HT flags from the driver */
2464                 struct hostapd_freq_params freq;
2465                 os_memset(&freq, 0, sizeof(freq));
2466                 freq.freq = drv->last_freq;
2467                 i802_set_freq2(priv, &freq);
2468         }
2469
2470         i802_del_beacon(drv);
2471
2472         /* remove monitor interface */
2473         nl80211_remove_iface(drv, drv->monitor_ifidx);
2474
2475         (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2476
2477         if (drv->monitor_sock >= 0) {
2478                 eloop_unregister_read_sock(drv->monitor_sock);
2479                 close(drv->monitor_sock);
2480         }
2481         if (drv->ioctl_sock >= 0)
2482                 close(drv->ioctl_sock);
2483         if (drv->eapol_sock >= 0) {
2484                 eloop_unregister_read_sock(drv->eapol_sock);
2485                 close(drv->eapol_sock);
2486         }
2487
2488         genl_family_put(drv->nl80211);
2489         nl_cache_free(drv->nl_cache);
2490         nl_handle_destroy(drv->nl_handle);
2491         nl_cb_put(drv->nl_cb);
2492
2493         if (drv->if_indices != drv->default_if_indices)
2494                 free(drv->if_indices);
2495
2496         free(drv);
2497 }
2498
2499
2500 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2501         .name = "nl80211",
2502         .init = i802_init,
2503         .init_bssid = i802_init_bssid,
2504         .deinit = i802_deinit,
2505         .wireless_event_init = i802_wireless_event_init,
2506         .wireless_event_deinit = i802_wireless_event_deinit,
2507         .set_ieee8021x = i802_set_ieee8021x,
2508         .set_privacy = i802_set_privacy,
2509         .set_encryption = i802_set_encryption,
2510         .get_seqnum = i802_get_seqnum,
2511         .flush = i802_flush,
2512         .read_sta_data = i802_read_sta_data,
2513         .send_eapol = i802_send_eapol,
2514         .sta_set_flags = i802_sta_set_flags,
2515         .sta_deauth = i802_sta_deauth,
2516         .sta_disassoc = i802_sta_disassoc,
2517         .sta_remove = i802_sta_remove,
2518         .send_mgmt_frame = i802_send_mgmt_frame,
2519         .sta_add2 = i802_sta_add2,
2520         .get_inact_sec = i802_get_inact_sec,
2521         .sta_clear_stats = i802_sta_clear_stats,
2522         .set_freq2 = i802_set_freq2,
2523         .set_rts = i802_set_rts,
2524         .get_rts = i802_get_rts,
2525         .set_frag = i802_set_frag,
2526         .get_frag = i802_get_frag,
2527         .set_retry = i802_set_retry,
2528         .get_retry = i802_get_retry,
2529         .set_rate_sets = i802_set_rate_sets,
2530         .set_regulatory_domain = i802_set_regulatory_domain,
2531         .set_beacon = i802_set_beacon,
2532         .set_internal_bridge = i802_set_internal_bridge,
2533         .set_beacon_int = i802_set_beacon_int,
2534         .set_dtim_period = i802_set_dtim_period,
2535         .set_cts_protect = i802_set_cts_protect,
2536         .set_preamble = i802_set_preamble,
2537         .set_short_slot_time = i802_set_short_slot_time,
2538         .set_tx_queue_params = i802_set_tx_queue_params,
2539         .bss_add = i802_bss_add,
2540         .bss_remove = i802_bss_remove,
2541         .if_add = i802_if_add,
2542         .if_update = i802_if_update,
2543         .if_remove = i802_if_remove,
2544         .get_hw_feature_data = i802_get_hw_feature_data,
2545         .set_sta_vlan = i802_set_sta_vlan,
2546         .set_country = i802_set_country,
2547 };