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

   1 /*
   2  * hostapd / Kernel driver communication via nl80211
   3  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Alternatively, this software may be distributed under the terms of BSD
  13  * license.
  14  *
  15  * See README and COPYING for more details.
  16  */
  17
  18 #include "includes.h"
  19
  20 #include <sys/ioctl.h>
  21 #include <netlink/genl/genl.h>
  22 #include <netlink/genl/family.h>
  23 #include <netlink/genl/ctrl.h>
  24 #include <netlink/msg.h>
  25 #include <netlink/attr.h>
  26 #include "nl80211_copy.h"
  27 #include <net/if.h>
  28 #include <netpacket/packet.h>
  29 #include "wireless_copy.h"
  30 #include <net/if_arp.h>
  31
  32 #include "hostapd.h"
  33 #include "driver.h"
  34 #include "ieee802_1x.h"
  35 #include "eloop.h"
  36 #include "ieee802_11.h"
  37 #include "sta_info.h"
  38 #include "hw_features.h"
  39 #include "mlme.h"
  40 #include "radiotap.h"
  41 #include "radiotap_iter.h"
  42
  43 #ifdef CONFIG_LIBNL20
  44 /* libnl 2.0 compatibility code */
  45 #define nl_handle_alloc_cb nl_socket_alloc_cb
  46 #define nl_handle_destroy nl_socket_free
  47 #endif /* CONFIG_LIBNL20 */
  48
  49 enum ieee80211_msg_type {
  50         ieee80211_msg_normal = 0,
  51         ieee80211_msg_tx_callback_ack = 1,
  52         ieee80211_msg_tx_callback_fail = 2,
  53 };
  54
  55 struct i802_driver_data {
  56         struct hostapd_data *hapd;
  57
  58         char iface[IFNAMSIZ + 1];
  59         int bridge;
  60         int ioctl_sock; /* socket for ioctl() use */
  61         int wext_sock; /* socket for wireless events */
  62         int eapol_sock; /* socket for EAPOL frames */
  63         int monitor_sock; /* socket for monitor */
  64         int monitor_ifidx;
  65
  66         int default_if_indices[16];
  67         int *if_indices;
  68         int num_if_indices;
  69
  70         int we_version;
  71         struct nl_handle *nl_handle;
  72         struct nl_cache *nl_cache;
  73         struct nl_cb *nl_cb;
  74         struct genl_family *nl80211;
  75         int dtim_period, beacon_int;
  76         unsigned int beacon_set:1;
  77         unsigned int ieee802_1x_active:1;
  78
  79         int last_freq;
  80         int last_freq_ht;
  81 };
  82
  83
  84 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
  85 {
  86         int i;
  87         int *old;
  88
  89         for (i = 0; i < drv->num_if_indices; i++) {
  90                 if (drv->if_indices[i] == 0) {
  91                         drv->if_indices[i] = ifidx;
  92                         return;
  93                 }
  94         }
  95
  96         if (drv->if_indices != drv->default_if_indices)
  97                 old = drv->if_indices;
  98         else
  99                 old = NULL;
 100
 101         drv->if_indices = realloc(old,
 102                                   sizeof(int) * (drv->num_if_indices + 1));
 103         if (!drv->if_indices) {
 104                 if (!old)
 105                         drv->if_indices = drv->default_if_indices;
 106                 else
 107                         drv->if_indices = old;
 108                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
 109                            "interfaces");
 110                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
 111                 return;
 112         }
 113         drv->if_indices[drv->num_if_indices] = ifidx;
 114         drv->num_if_indices++;
 115 }
 116
 117
 118 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
 119 {
 120         int i;
 121
 122         for (i = 0; i < drv->num_if_indices; i++) {
 123                 if (drv->if_indices[i] == ifidx) {
 124                         drv->if_indices[i] = 0;
 125                         break;
 126                 }
 127         }
 128 }
 129
 130
 131 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
 132 {
 133         int i;
 134
 135         if (ifidx == drv->bridge)
 136                 return 1;
 137
 138         for (i = 0; i < drv->num_if_indices; i++)
 139                 if (drv->if_indices[i] == ifidx)
 140                         return 1;
 141
 142         return 0;
 143 }
 144
 145
 146 /* nl80211 code */
 147 static int ack_handler(struct nl_msg *msg, void *arg)
 148 {
 149         int *err = arg;
 150         *err = 0;
 151         return NL_STOP;
 152 }
 153
 154 static int finish_handler(struct nl_msg *msg, void *arg)
 155 {
 156         int *ret = arg;
 157         *ret = 0;
 158         return NL_SKIP;
 159 }
 160
 161 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 162                          void *arg)
 163 {
 164         int *ret = arg;
 165         *ret = err->error;
 166         return NL_SKIP;
 167 }
 168
 169 static int send_and_recv_msgs(struct i802_driver_data *drv,
 170                               struct nl_msg *msg,
 171                               int (*valid_handler)(struct nl_msg *, void *),
 172                               void *valid_data)
 173 {
 174         struct nl_cb *cb;
 175         int err = -ENOMEM;
 176
 177         cb = nl_cb_clone(drv->nl_cb);
 178         if (!cb)
 179                 goto out;
 180
 181         err = nl_send_auto_complete(drv->nl_handle, msg);
 182         if (err < 0)
 183                 goto out;
 184
 185         err = 1;
 186
 187         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 188         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 189         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 190
 191         if (valid_handler)
 192                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 193                           valid_handler, valid_data);
 194
 195         while (err > 0)
 196                 nl_recvmsgs(drv->nl_handle, cb);
 197  out:
 198         nl_cb_put(cb);
 199         nlmsg_free(msg);
 200         return err;
 201 }
 202
 203 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
 204                                    const char *ifname, int dev_up)
 205 {
 206         struct ifreq ifr;
 207
 208         if (drv->ioctl_sock < 0)
 209                 return -1;
 210
 211         memset(&ifr, 0, sizeof(ifr));
 212         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 213
 214         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 215                 perror("ioctl[SIOCGIFFLAGS]");
 216                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 217                            drv->iface);
 218                 return -1;
 219         }
 220
 221         if (dev_up)
 222                 ifr.ifr_flags |= IFF_UP;
 223         else
 224                 ifr.ifr_flags &= ~IFF_UP;
 225
 226         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 227                 perror("ioctl[SIOCSIFFLAGS]");
 228                 return -1;
 229         }
 230
 231         return 0;
 232 }
 233
 234
 235 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
 236                        const char *alg, const u8 *addr, int idx, const u8 *key,
 237                        size_t key_len, int txkey)
 238 {
 239         struct nl_msg *msg;
 240         int ret;
 241
 242         msg = nlmsg_alloc();
 243         if (!msg)
 244                 return -ENOMEM;
 245
 246         if (strcmp(alg, "none") == 0) {
 247                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 248                             0, NL80211_CMD_DEL_KEY, 0);
 249         } else {
 250                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 251                             0, NL80211_CMD_NEW_KEY, 0);
 252                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
 253                 if (strcmp(alg, "WEP") == 0) {
 254                         if (key_len == 5)
 255                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 256                                             0x000FAC01);
 257                         else
 258                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 259                                             0x000FAC05);
 260                 } else if (strcmp(alg, "TKIP") == 0)
 261                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
 262                 else if (strcmp(alg, "CCMP") == 0)
 263                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
 264                 else if (strcmp(alg, "IGTK") == 0)
 265                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
 266                 else {
 267                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
 268                                    "algorithm '%s'", __func__, alg);
 269                         nlmsg_free(msg);
 270                         return -1;
 271                 }
 272         }
 273
 274         if (addr)
 275                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 276         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 277         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 278
 279         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 280         if (ret == -ENOENT)
 281                 ret = 0;
 282
 283         /*
 284          * If we failed or don't need to set the default TX key (below),
 285          * we're done here.
 286          */
 287         if (ret || !txkey || addr)
 288                 return ret;
 289
 290         msg = nlmsg_alloc();
 291         if (!msg)
 292                 return -ENOMEM;
 293
 294         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 295                     0, NL80211_CMD_SET_KEY, 0);
 296         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 297         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 298 #ifdef NL80211_MFP_PENDING
 299         if (strcmp(alg, "IGTK") == 0)
 300                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
 301         else
 302                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 303 #else /* NL80211_MFP_PENDING */
 304         NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 305 #endif /* NL80211_MFP_PENDING */
 306
 307         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 308         if (ret == -ENOENT)
 309                 ret = 0;
 310         return ret;
 311  nla_put_failure:
 312         return -ENOBUFS;
 313 }
 314
 315
 316 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
 317                                const u8 *addr, int idx, const u8 *key,
 318                                size_t key_len, int txkey)
 319 {
 320         struct i802_driver_data *drv = priv;
 321         int ret;
 322
 323         ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
 324                           key_len, txkey);
 325         if (ret < 0)
 326                 return ret;
 327
 328         if (strcmp(alg, "IGTK") == 0) {
 329                 ret = nl_set_encr(drv->monitor_ifidx, drv, alg, addr, idx, key,
 330                                   key_len, txkey);
 331         }
 332
 333         return ret;
 334 }
 335
 336
 337 static inline int min_int(int a, int b)
 338 {
 339         if (a < b)
 340                 return a;
 341         return b;
 342 }
 343
 344
 345 static int get_key_handler(struct nl_msg *msg, void *arg)
 346 {
 347         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 348         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 349
 350         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 351                   genlmsg_attrlen(gnlh, 0), NULL);
 352
 353         /*
 354          * TODO: validate the key index and mac address!
 355          * Otherwise, there's a race condition as soon as
 356          * the kernel starts sending key notifications.
 357          */
 358
 359         if (tb[NL80211_ATTR_KEY_SEQ])
 360                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 361                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
 362         return NL_SKIP;
 363 }
 364
 365
 366 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
 367                            int idx, u8 *seq)
 368 {
 369         struct i802_driver_data *drv = priv;
 370         struct nl_msg *msg;
 371
 372         msg = nlmsg_alloc();
 373         if (!msg)
 374                 return -ENOMEM;
 375
 376         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 377                     0, NL80211_CMD_GET_KEY, 0);
 378
 379         if (addr)
 380                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 381         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 382         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
 383
 384         memset(seq, 0, 6);
 385
 386         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
 387  nla_put_failure:
 388         return -ENOBUFS;
 389 }
 390
 391
 392 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
 393                               int mode)
 394 {
 395         struct i802_driver_data *drv = priv;
 396         struct nl_msg *msg;
 397         u8 rates[NL80211_MAX_SUPP_RATES];
 398         u8 rates_len = 0;
 399         int i;
 400
 401         msg = nlmsg_alloc();
 402         if (!msg)
 403                 return -ENOMEM;
 404
 405         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 406                     NL80211_CMD_SET_BSS, 0);
 407
 408         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
 409                 rates[rates_len++] = basic_rates[i] / 5;
 410
 411         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
 412
 413         /* TODO: multi-BSS support */
 414         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 415
 416         return send_and_recv_msgs(drv, msg, NULL, NULL);
 417  nla_put_failure:
 418         return -ENOBUFS;
 419 }
 420
 421
 422 static int i802_send_frame(void *priv, const void *data, size_t len,
 423                            int encrypt, int flags)
 424 {
 425         __u8 rtap_hdr[] = {
 426                 0x00, 0x00, /* radiotap version */
 427                 0x0e, 0x00, /* radiotap length */
 428                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
 429                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
 430                 0x00,       /* padding */
 431                 0x00, 0x00, /* RX and TX flags to indicate that */
 432                 0x00, 0x00, /* this is the injected frame directly */
 433         };
 434         struct i802_driver_data *drv = priv;
 435         struct iovec iov[2] = {
 436                 {
 437                         .iov_base = &rtap_hdr,
 438                         .iov_len = sizeof(rtap_hdr),
 439                 },
 440                 {
 441                         .iov_base = (void*)data,
 442                         .iov_len = len,
 443                 }
 444         };
 445         struct msghdr msg = {
 446                 .msg_name = NULL,
 447                 .msg_namelen = 0,
 448                 .msg_iov = iov,
 449                 .msg_iovlen = 2,
 450                 .msg_control = NULL,
 451                 .msg_controllen = 0,
 452                 .msg_flags = 0,
 453         };
 454
 455         if (encrypt)
 456                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
 457
 458         return sendmsg(drv->monitor_sock, &msg, flags);
 459 }
 460
 461 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
 462                                 int flags)
 463 {
 464         struct ieee80211_mgmt *mgmt;
 465         int do_not_encrypt = 0;
 466         u16 fc;
 467
 468         mgmt = (struct ieee80211_mgmt *) data;
 469         fc = le_to_host16(mgmt->frame_control);
 470
 471         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
 472             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
 473                 /*
 474                  * Only one of the authentication frame types is encrypted.
 475                  * In order for static WEP encryption to work properly (i.e.,
 476                  * to not encrypt the frame), we need to tell mac80211 about
 477                  * the frames that must not be encrypted.
 478                  */
 479                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 480                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
 481                 if (auth_alg == WLAN_AUTH_OPEN ||
 482                     (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
 483                         do_not_encrypt = 1;
 484         }
 485
 486         return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
 487 }
 488
 489 /* Set kernel driver on given frequency (MHz) */
 490 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
 491 {
 492         struct i802_driver_data *drv = priv;
 493         struct nl_msg *msg;
 494
 495         msg = nlmsg_alloc();
 496         if (!msg)
 497                 return -1;
 498
 499         drv->last_freq = freq->freq;
 500         drv->last_freq_ht = freq->ht_enabled;
 501
 502         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 503                     NL80211_CMD_SET_WIPHY, 0);
 504
 505         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 506         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
 507         if (freq->ht_enabled) {
 508                 switch (freq->sec_channel_offset) {
 509                 case -1:
 510                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 511                                     NL80211_SEC_CHAN_BELOW);
 512                         break;
 513                 case 1:
 514                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 515                                     NL80211_SEC_CHAN_ABOVE);
 516                         break;
 517                 default:
 518                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 519                                     NL80211_SEC_CHAN_DISABLED);
 520                         break;
 521                 }
 522         }
 523
 524         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 525                 return 0;
 526  nla_put_failure:
 527         return -1;
 528 }
 529
 530
 531 static int i802_set_rts(void *priv, int rts)
 532 {
 533         struct i802_driver_data *drv = priv;
 534         struct iwreq iwr;
 535
 536         memset(&iwr, 0, sizeof(iwr));
 537         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 538         iwr.u.rts.value = rts;
 539         iwr.u.rts.fixed = 1;
 540
 541         if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
 542                 perror("ioctl[SIOCSIWRTS]");
 543                 return -1;
 544         }
 545
 546         return 0;
 547 }
 548
 549
 550 static int i802_get_rts(void *priv, int *rts)
 551 {
 552         struct i802_driver_data *drv = priv;
 553         struct iwreq iwr;
 554
 555         memset(&iwr, 0, sizeof(iwr));
 556         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 557
 558         if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
 559                 perror("ioctl[SIOCGIWRTS]");
 560                 return -1;
 561         }
 562
 563         *rts = iwr.u.rts.value;
 564
 565         return 0;
 566 }
 567
 568
 569 static int i802_set_frag(void *priv, int frag)
 570 {
 571         struct i802_driver_data *drv = priv;
 572         struct iwreq iwr;
 573
 574         memset(&iwr, 0, sizeof(iwr));
 575         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 576         iwr.u.frag.value = frag;
 577         iwr.u.frag.fixed = 1;
 578
 579         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 580                 perror("ioctl[SIOCSIWFRAG]");
 581                 return -1;
 582         }
 583
 584         return 0;
 585 }
 586
 587
 588 static int i802_get_frag(void *priv, int *frag)
 589 {
 590         struct i802_driver_data *drv = priv;
 591         struct iwreq iwr;
 592
 593         memset(&iwr, 0, sizeof(iwr));
 594         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 595
 596         if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
 597                 perror("ioctl[SIOCGIWFRAG]");
 598                 return -1;
 599         }
 600
 601         *frag = iwr.u.frag.value;
 602
 603         return 0;
 604 }
 605
 606
 607 static int i802_set_retry(void *priv, int short_retry, int long_retry)
 608 {
 609         struct i802_driver_data *drv = priv;
 610         struct iwreq iwr;
 611
 612         memset(&iwr, 0, sizeof(iwr));
 613         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 614
 615         iwr.u.retry.value = short_retry;
 616         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 617         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 618                 perror("ioctl[SIOCSIWRETRY(short)]");
 619                 return -1;
 620         }
 621
 622         iwr.u.retry.value = long_retry;
 623         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 624         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 625                 perror("ioctl[SIOCSIWRETRY(long)]");
 626                 return -1;
 627         }
 628
 629         return 0;
 630 }
 631
 632
 633 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
 634 {
 635         struct i802_driver_data *drv = priv;
 636         struct iwreq iwr;
 637
 638         memset(&iwr, 0, sizeof(iwr));
 639         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 640
 641         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 642         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 643                 perror("ioctl[SIOCGIWFRAG(short)]");
 644                 return -1;
 645         }
 646         *short_retry = iwr.u.retry.value;
 647
 648         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 649         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 650                 perror("ioctl[SIOCGIWFRAG(long)]");
 651                 return -1;
 652         }
 653         *long_retry = iwr.u.retry.value;
 654
 655         return 0;
 656 }
 657
 658
 659 static int i802_flush(void *priv)
 660 {
 661         struct i802_driver_data *drv = priv;
 662         struct nl_msg *msg;
 663
 664         msg = nlmsg_alloc();
 665         if (!msg)
 666                 return -1;
 667
 668         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 669                     0, NL80211_CMD_DEL_STATION, 0);
 670
 671         /*
 672          * XXX: FIX! this needs to flush all VLANs too
 673          */
 674         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 675                     if_nametoindex(drv->iface));
 676
 677         return send_and_recv_msgs(drv, msg, NULL, NULL);
 678  nla_put_failure:
 679         return -ENOBUFS;
 680 }
 681
 682
 683 static int get_sta_handler(struct nl_msg *msg, void *arg)
 684 {
 685         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 686         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 687         struct hostap_sta_driver_data *data = arg;
 688         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
 689         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
 690                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
 691                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
 692                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
 693         };
 694
 695         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 696                   genlmsg_attrlen(gnlh, 0), NULL);
 697
 698         /*
 699          * TODO: validate the interface and mac address!
 700          * Otherwise, there's a race condition as soon as
 701          * the kernel starts sending station notifications.
 702          */
 703
 704         if (!tb[NL80211_ATTR_STA_INFO]) {
 705                 wpa_printf(MSG_DEBUG, "sta stats missing!");
 706                 return NL_SKIP;
 707         }
 708         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
 709                              tb[NL80211_ATTR_STA_INFO],
 710                              stats_policy)) {
 711                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
 712                 return NL_SKIP;
 713         }
 714
 715         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
 716                 data->inactive_msec =
 717                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
 718         if (stats[NL80211_STA_INFO_RX_BYTES])
 719                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
 720         if (stats[NL80211_STA_INFO_TX_BYTES])
 721                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
 722
 723         return NL_SKIP;
 724 }
 725
 726 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
 727                               const u8 *addr)
 728 {
 729         struct i802_driver_data *drv = priv;
 730         struct nl_msg *msg;
 731
 732         msg = nlmsg_alloc();
 733         if (!msg)
 734                 return -ENOMEM;
 735
 736         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 737                     0, NL80211_CMD_GET_STATION, 0);
 738
 739         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 740         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 741
 742         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
 743  nla_put_failure:
 744         return -ENOBUFS;
 745 }
 746
 747
 748 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
 749                            size_t data_len, int encrypt, const u8 *own_addr)
 750 {
 751         struct i802_driver_data *drv = priv;
 752         struct ieee80211_hdr *hdr;
 753         size_t len;
 754         u8 *pos;
 755         int res;
 756 #if 0 /* FIX */
 757         int qos = sta->flags & WLAN_STA_WME;
 758 #else
 759         int qos = 0;
 760 #endif
 761
 762         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
 763                 data_len;
 764         hdr = os_zalloc(len);
 765         if (hdr == NULL) {
 766                 printf("malloc() failed for i802_send_data(len=%lu)\n",
 767                        (unsigned long) len);
 768                 return -1;
 769         }
 770
 771         hdr->frame_control =
 772                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
 773         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
 774         if (encrypt)
 775                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 776 #if 0 /* To be enabled if qos determination is added above */
 777         if (qos) {
 778                 hdr->frame_control |=
 779                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
 780         }
 781 #endif
 782
 783         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
 784         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 785         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 786         pos = (u8 *) (hdr + 1);
 787
 788 #if 0 /* To be enabled if qos determination is added above */
 789         if (qos) {
 790                 /* add an empty QoS header if needed */
 791                 pos[0] = 0;
 792                 pos[1] = 0;
 793                 pos += 2;
 794         }
 795 #endif
 796
 797         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
 798         pos += sizeof(rfc1042_header);
 799         WPA_PUT_BE16(pos, ETH_P_PAE);
 800         pos += 2;
 801         memcpy(pos, data, data_len);
 802
 803         res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
 804         free(hdr);
 805
 806         if (res < 0) {
 807                 perror("i802_send_eapol: send");
 808                 printf("i802_send_eapol - packet len: %lu - failed\n",
 809                        (unsigned long) len);
 810         }
 811
 812         return res;
 813 }
 814
 815
 816 static int i802_sta_add2(const char *ifname, void *priv,
 817                          struct hostapd_sta_add_params *params)
 818 {
 819         struct i802_driver_data *drv = priv;
 820         struct nl_msg *msg;
 821         int ret = -ENOBUFS;
 822
 823         msg = nlmsg_alloc();
 824         if (!msg)
 825                 return -ENOMEM;
 826
 827         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 828                     0, NL80211_CMD_NEW_STATION, 0);
 829
 830         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 831                     if_nametoindex(drv->iface));
 832         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
 833         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
 834         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
 835                 params->supp_rates);
 836         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
 837                     params->listen_interval);
 838
 839 #ifdef CONFIG_IEEE80211N
 840         if (params->ht_capabilities) {
 841                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
 842                         params->ht_capabilities->length,
 843                         &params->ht_capabilities->data);
 844         }
 845 #endif /* CONFIG_IEEE80211N */
 846
 847         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 848         if (ret == -EEXIST)
 849                 ret = 0;
 850  nla_put_failure:
 851         return ret;
 852 }
 853
 854
 855 static int i802_sta_remove(void *priv, const u8 *addr)
 856 {
 857         struct i802_driver_data *drv = priv;
 858         struct nl_msg *msg;
 859         int ret;
 860
 861         msg = nlmsg_alloc();
 862         if (!msg)
 863                 return -ENOMEM;
 864
 865         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 866                     0, NL80211_CMD_DEL_STATION, 0);
 867
 868         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 869                     if_nametoindex(drv->iface));
 870         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 871
 872         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 873         if (ret == -ENOENT)
 874                 return 0;
 875         return ret;
 876  nla_put_failure:
 877         return -ENOBUFS;
 878 }
 879
 880
 881 static int i802_sta_set_flags(void *priv, const u8 *addr,
 882                               int total_flags, int flags_or, int flags_and)
 883 {
 884         struct i802_driver_data *drv = priv;
 885         struct nl_msg *msg, *flags = NULL;
 886
 887         msg = nlmsg_alloc();
 888         if (!msg)
 889                 return -ENOMEM;
 890
 891         flags = nlmsg_alloc();
 892         if (!flags) {
 893                 nlmsg_free(msg);
 894                 return -ENOMEM;
 895         }
 896
 897         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 898                     0, NL80211_CMD_SET_STATION, 0);
 899
 900         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 901                     if_nametoindex(drv->iface));
 902         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 903
 904         if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
 905                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
 906
 907         if (total_flags & WLAN_STA_WME)
 908                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
 909
 910         if (total_flags & WLAN_STA_SHORT_PREAMBLE)
 911                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
 912
 913 #ifdef NL80211_MFP_PENDING
 914         if (total_flags & WLAN_STA_MFP)
 915                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
 916 #endif /* NL80211_MFP_PENDING */
 917
 918         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
 919                 goto nla_put_failure;
 920
 921         nlmsg_free(flags);
 922
 923         return send_and_recv_msgs(drv, msg, NULL, NULL);
 924  nla_put_failure:
 925         nlmsg_free(flags);
 926         return -ENOBUFS;
 927 }
 928
 929
 930 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
 931 {
 932         return -1;
 933 }
 934
 935
 936 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 937                                     int cw_min, int cw_max, int burst_time)
 938 {
 939         struct i802_driver_data *drv = priv;
 940         struct nl_msg *msg;
 941         struct nlattr *txq, *params;
 942
 943         msg = nlmsg_alloc();
 944         if (!msg)
 945                 return -1;
 946
 947         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 948                     0, NL80211_CMD_SET_WIPHY, 0);
 949
 950         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 951
 952         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
 953         if (!txq)
 954                 goto nla_put_failure;
 955
 956         /* We are only sending parameters for a single TXQ at a time */
 957         params = nla_nest_start(msg, 1);
 958         if (!params)
 959                 goto nla_put_failure;
 960
 961         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
 962         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
 963          * 32 usec, so need to convert the value here. */
 964         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
 965         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
 966         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
 967         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
 968
 969         nla_nest_end(msg, params);
 970
 971         nla_nest_end(msg, txq);
 972
 973         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 974                 return 0;
 975  nla_put_failure:
 976         return -1;
 977 }
 978
 979
 980 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
 981 {
 982         struct nl_msg *msg;
 983
 984         /* stop listening for EAPOL on this interface */
 985         del_ifidx(drv, ifidx);
 986
 987         msg = nlmsg_alloc();
 988         if (!msg)
 989                 goto nla_put_failure;
 990
 991         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 992                     0, NL80211_CMD_DEL_INTERFACE, 0);
 993         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
 994
 995         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 996                 return;
 997  nla_put_failure:
 998         printf("Failed to remove interface.\n");
 999 }
1000
1001
1002 static int nl80211_create_iface(struct i802_driver_data *drv,
1003                                 const char *ifname,
1004                                 enum nl80211_iftype iftype,
1005                                 const u8 *addr)
1006 {
1007         struct nl_msg *msg, *flags = NULL;
1008         int ifidx;
1009         struct ifreq ifreq;
1010         struct iwreq iwr;
1011         int ret = -ENOBUFS;
1012
1013         msg = nlmsg_alloc();
1014         if (!msg)
1015                 return -1;
1016
1017         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1018                     0, NL80211_CMD_NEW_INTERFACE, 0);
1019         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1020                     if_nametoindex(drv->hapd->conf->iface));
1021         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1022         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1023
1024         if (iftype == NL80211_IFTYPE_MONITOR) {
1025                 int err;
1026
1027                 flags = nlmsg_alloc();
1028                 if (!flags)
1029                         goto nla_put_failure;
1030
1031                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1032
1033                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1034
1035                 nlmsg_free(flags);
1036
1037                 if (err)
1038                         goto nla_put_failure;
1039         }
1040
1041         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1042         if (ret) {
1043  nla_put_failure:
1044                 printf("Failed to create interface %s.\n", ifname);
1045                 return ret;
1046         }
1047
1048         ifidx = if_nametoindex(ifname);
1049
1050         if (ifidx <= 0)
1051                 return -1;
1052
1053         /* start listening for EAPOL on this interface */
1054         add_ifidx(drv, ifidx);
1055
1056         if (addr) {
1057                 switch (iftype) {
1058                 case NL80211_IFTYPE_AP:
1059                         os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1060                         memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1061                         ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1062
1063                         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1064                                 nl80211_remove_iface(drv, ifidx);
1065                                 return -1;
1066                         }
1067                         break;
1068                 case NL80211_IFTYPE_WDS:
1069                         memset(&iwr, 0, sizeof(iwr));
1070                         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1071                         iwr.u.addr.sa_family = ARPHRD_ETHER;
1072                         memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1073                         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1074                                 return -1;
1075                         break;
1076                 default:
1077                         /* nothing */
1078                         break;
1079                 }
1080         }
1081
1082         return ifidx;
1083 }
1084
1085
1086 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1087 {
1088         int ifidx;
1089
1090         /*
1091          * The kernel supports that when the low-level driver does,
1092          * but we currently don't because we need per-BSS data that
1093          * currently we can't handle easily.
1094          */
1095         return -1;
1096
1097         ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1098         if (ifidx < 0)
1099                 return -1;
1100         if (hostapd_set_iface_flags(priv, ifname, 1)) {
1101                 nl80211_remove_iface(priv, ifidx);
1102                 return -1;
1103         }
1104         return 0;
1105 }
1106
1107
1108 static int i802_bss_remove(void *priv, const char *ifname)
1109 {
1110         nl80211_remove_iface(priv, if_nametoindex(ifname));
1111         return 0;
1112 }
1113
1114
1115 static int i802_set_beacon(const char *iface, void *priv,
1116                            u8 *head, size_t head_len,
1117                            u8 *tail, size_t tail_len)
1118 {
1119         struct i802_driver_data *drv = priv;
1120         struct nl_msg *msg;
1121         u8 cmd = NL80211_CMD_NEW_BEACON;
1122         int ret;
1123
1124         msg = nlmsg_alloc();
1125         if (!msg)
1126                 return -ENOMEM;
1127
1128         if (drv->beacon_set)
1129                 cmd = NL80211_CMD_SET_BEACON;
1130
1131         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1132                     0, cmd, 0);
1133         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1134         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1135         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1136         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1137
1138         if (!drv->dtim_period)
1139                 drv->dtim_period = 2;
1140         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1141
1142         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1143         if (!ret)
1144                 drv->beacon_set = 1;
1145         return ret;
1146  nla_put_failure:
1147         return -ENOBUFS;
1148 }
1149
1150
1151 static int i802_del_beacon(struct i802_driver_data *drv)
1152 {
1153         struct nl_msg *msg;
1154
1155         msg = nlmsg_alloc();
1156         if (!msg)
1157                 return -ENOMEM;
1158
1159         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1160                     0, NL80211_CMD_DEL_BEACON, 0);
1161         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1162
1163         return send_and_recv_msgs(drv, msg, NULL, NULL);
1164  nla_put_failure:
1165         return -ENOBUFS;
1166 }
1167
1168
1169 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1170 {
1171         struct i802_driver_data *drv = priv;
1172
1173         /*
1174          * FIXME: This needs to be per interface (BSS)
1175          */
1176         drv->ieee802_1x_active = enabled;
1177         return 0;
1178 }
1179
1180
1181 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1182 {
1183         struct i802_driver_data *drv = priv;
1184         struct iwreq iwr;
1185
1186         memset(&iwr, 0, sizeof(iwr));
1187
1188         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1189         iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1190         iwr.u.param.value = enabled;
1191
1192         ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1193
1194         /* ignore errors, the kernel/driver might not care */
1195         return 0;
1196 }
1197
1198
1199 static int i802_set_internal_bridge(void *priv, int value)
1200 {
1201         return -1;
1202 }
1203
1204
1205 static int i802_set_beacon_int(void *priv, int value)
1206 {
1207         struct i802_driver_data *drv = priv;
1208         struct nl_msg *msg;
1209
1210         drv->beacon_int = value;
1211
1212         if (!drv->beacon_set)
1213                 return 0;
1214
1215         msg = nlmsg_alloc();
1216         if (!msg)
1217                 return -ENOMEM;
1218
1219         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1220                     0, NL80211_CMD_SET_BEACON, 0);
1221         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1222
1223         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1224
1225         return send_and_recv_msgs(drv, msg, NULL, NULL);
1226  nla_put_failure:
1227         return -ENOBUFS;
1228 }
1229
1230
1231 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1232 {
1233         struct i802_driver_data *drv = priv;
1234         struct nl_msg *msg;
1235
1236         msg = nlmsg_alloc();
1237         if (!msg)
1238                 return -ENOMEM;
1239
1240         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1241                     0, NL80211_CMD_SET_BEACON, 0);
1242         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1243
1244         drv->dtim_period = value;
1245         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1246
1247         return send_and_recv_msgs(drv, msg, NULL, NULL);
1248  nla_put_failure:
1249         return -ENOBUFS;
1250 }
1251
1252
1253 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1254 {
1255         struct i802_driver_data *drv = priv;
1256         struct nl_msg *msg;
1257
1258         msg = nlmsg_alloc();
1259         if (!msg)
1260                 return -ENOMEM;
1261
1262         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1263                     NL80211_CMD_SET_BSS, 0);
1264
1265         if (cts >= 0)
1266                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1267         if (preamble >= 0)
1268                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1269         if (slot >= 0)
1270                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1271
1272         /* TODO: multi-BSS support */
1273         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1274
1275         return send_and_recv_msgs(drv, msg, NULL, NULL);
1276  nla_put_failure:
1277         return -ENOBUFS;
1278 }
1279
1280
1281 static int i802_set_cts_protect(void *priv, int value)
1282 {
1283         return i802_set_bss(priv, value, -1, -1);
1284 }
1285
1286
1287 static int i802_set_preamble(void *priv, int value)
1288 {
1289         return i802_set_bss(priv, -1, value, -1);
1290 }
1291
1292
1293 static int i802_set_short_slot_time(void *priv, int value)
1294 {
1295         return i802_set_bss(priv, -1, -1, value);
1296 }
1297
1298
1299 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1300 {
1301         switch (type) {
1302         case HOSTAPD_IF_VLAN:
1303                 return NL80211_IFTYPE_AP_VLAN;
1304         case HOSTAPD_IF_WDS:
1305                 return NL80211_IFTYPE_WDS;
1306         }
1307         return -1;
1308 }
1309
1310
1311 static int i802_if_add(const char *iface, void *priv,
1312                        enum hostapd_driver_if_type type, char *ifname,
1313                        const u8 *addr)
1314 {
1315         if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1316                 return -1;
1317         return 0;
1318 }
1319
1320
1321 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1322                           char *ifname, const u8 *addr)
1323 {
1324         /* unused at the moment */
1325         return -1;
1326 }
1327
1328
1329 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1330                           const char *ifname, const u8 *addr)
1331 {
1332         nl80211_remove_iface(priv, if_nametoindex(ifname));
1333         return 0;
1334 }
1335
1336
1337 struct phy_info_arg {
1338         u16 *num_modes;
1339         struct hostapd_hw_modes *modes;
1340 };
1341
1342 static int phy_info_handler(struct nl_msg *msg, void *arg)
1343 {
1344         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1345         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1346         struct phy_info_arg *phy_info = arg;
1347
1348         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1349
1350         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1351         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1352                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1353                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1354                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1355                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1356                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1357                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1358         };
1359
1360         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1361         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1362                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1363                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1364         };
1365
1366         struct nlattr *nl_band;
1367         struct nlattr *nl_freq;
1368         struct nlattr *nl_rate;
1369         int rem_band, rem_freq, rem_rate;
1370         struct hostapd_hw_modes *mode;
1371         int idx, mode_is_set;
1372
1373         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1374                   genlmsg_attrlen(gnlh, 0), NULL);
1375
1376         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1377                 return NL_SKIP;
1378
1379         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1380                 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1381                 if (!mode)
1382                         return NL_SKIP;
1383                 phy_info->modes = mode;
1384
1385                 mode_is_set = 0;
1386
1387                 mode = &phy_info->modes[*(phy_info->num_modes)];
1388                 memset(mode, 0, sizeof(*mode));
1389                 *(phy_info->num_modes) += 1;
1390
1391                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1392                           nla_len(nl_band), NULL);
1393
1394                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1395                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1396                                   nla_len(nl_freq), freq_policy);
1397                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1398                                 continue;
1399                         mode->num_channels++;
1400                 }
1401
1402                 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1403                 if (!mode->channels)
1404                         return NL_SKIP;
1405
1406                 idx = 0;
1407
1408                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1409                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1410                                   nla_len(nl_freq), freq_policy);
1411                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1412                                 continue;
1413
1414                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1415                         mode->channels[idx].flag = 0;
1416
1417                         if (!mode_is_set) {
1418                                 /* crude heuristic */
1419                                 if (mode->channels[idx].freq < 4000)
1420                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
1421                                 else
1422                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
1423                                 mode_is_set = 1;
1424                         }
1425
1426                         /* crude heuristic */
1427                         if (mode->channels[idx].freq < 4000)
1428                                 if (mode->channels[idx].freq == 2848)
1429                                         mode->channels[idx].chan = 14;
1430                                 else
1431                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1432                         else
1433                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1434
1435                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1436                                 mode->channels[idx].flag |=
1437                                         HOSTAPD_CHAN_DISABLED;
1438                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1439                                 mode->channels[idx].flag |=
1440                                         HOSTAPD_CHAN_PASSIVE_SCAN;
1441                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1442                                 mode->channels[idx].flag |=
1443                                         HOSTAPD_CHAN_NO_IBSS;
1444                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1445                                 mode->channels[idx].flag |=
1446                                         HOSTAPD_CHAN_RADAR;
1447
1448                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1449                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1450                                 mode->channels[idx].max_tx_power =
1451                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1452
1453                         idx++;
1454                 }
1455
1456                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1457                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1458                                   nla_len(nl_rate), rate_policy);
1459                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1460                                 continue;
1461                         mode->num_rates++;
1462                 }
1463
1464                 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1465                 if (!mode->rates)
1466                         return NL_SKIP;
1467
1468                 idx = 0;
1469
1470                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1471                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1472                                   nla_len(nl_rate), rate_policy);
1473                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1474                                 continue;
1475                         mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1476
1477                         /* crude heuristic */
1478                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1479                             mode->rates[idx].rate > 200)
1480                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
1481
1482                         if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1483                                 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1484
1485                         idx++;
1486                 }
1487         }
1488
1489         return NL_SKIP;
1490 }
1491
1492 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1493                                              u16 *num_modes)
1494 {
1495         u16 m;
1496         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1497         int i, mode11g_idx = -1;
1498
1499         /* If only 802.11g mode is included, use it to construct matching
1500          * 802.11b mode data. */
1501
1502         for (m = 0; m < *num_modes; m++) {
1503                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1504                         return modes; /* 802.11b already included */
1505                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1506                         mode11g_idx = m;
1507         }
1508
1509         if (mode11g_idx < 0)
1510                 return modes; /* 2.4 GHz band not supported at all */
1511
1512         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1513         if (nmodes == NULL)
1514                 return modes; /* Could not add 802.11b mode */
1515
1516         mode = &nmodes[*num_modes];
1517         os_memset(mode, 0, sizeof(*mode));
1518         (*num_modes)++;
1519         modes = nmodes;
1520
1521         mode->mode = HOSTAPD_MODE_IEEE80211B;
1522
1523         mode11g = &modes[mode11g_idx];
1524         mode->num_channels = mode11g->num_channels;
1525         mode->channels = os_malloc(mode11g->num_channels *
1526                                    sizeof(struct hostapd_channel_data));
1527         if (mode->channels == NULL) {
1528                 (*num_modes)--;
1529                 return modes; /* Could not add 802.11b mode */
1530         }
1531         os_memcpy(mode->channels, mode11g->channels,
1532                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1533
1534         mode->num_rates = 0;
1535         mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1536         if (mode->rates == NULL) {
1537                 os_free(mode->channels);
1538                 (*num_modes)--;
1539                 return modes; /* Could not add 802.11b mode */
1540         }
1541
1542         for (i = 0; i < mode11g->num_rates; i++) {
1543                 if (mode11g->rates[i].rate > 110 ||
1544                     mode11g->rates[i].flags &
1545                     (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1546                         continue;
1547                 mode->rates[mode->num_rates] = mode11g->rates[i];
1548                 mode->num_rates++;
1549                 if (mode->num_rates == 4)
1550                         break;
1551         }
1552
1553         if (mode->num_rates == 0) {
1554                 os_free(mode->channels);
1555                 os_free(mode->rates);
1556                 (*num_modes)--;
1557                 return modes; /* No 802.11b rates */
1558         }
1559
1560         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1561                    "information");
1562
1563         return modes;
1564 }
1565
1566 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1567                                                          u16 *num_modes,
1568                                                          u16 *flags)
1569 {
1570         struct i802_driver_data *drv = priv;
1571         struct nl_msg *msg;
1572         struct phy_info_arg result = {
1573                 .num_modes = num_modes,
1574                 .modes = NULL,
1575         };
1576
1577         *num_modes = 0;
1578         *flags = 0;
1579
1580         msg = nlmsg_alloc();
1581         if (!msg)
1582                 return NULL;
1583
1584         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1585                     0, NL80211_CMD_GET_WIPHY, 0);
1586
1587         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1588
1589         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1590                 return i802_add_11b(result.modes, num_modes);
1591  nla_put_failure:
1592         return NULL;
1593 }
1594
1595
1596 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1597                              const char *ifname, int vlan_id)
1598 {
1599         struct i802_driver_data *drv = priv;
1600         struct nl_msg *msg;
1601
1602         msg = nlmsg_alloc();
1603         if (!msg)
1604                 return -ENOMEM;
1605
1606         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1607                     0, NL80211_CMD_SET_STATION, 0);
1608
1609         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1610                     if_nametoindex(drv->iface));
1611         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1612         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1613                     if_nametoindex(ifname));
1614
1615         return send_and_recv_msgs(drv, msg, NULL, NULL);
1616  nla_put_failure:
1617         return -ENOBUFS;
1618 }
1619
1620
1621 static int i802_set_country(void *priv, const char *country)
1622 {
1623         struct i802_driver_data *drv = priv;
1624         struct nl_msg *msg;
1625         char alpha2[3];
1626
1627         msg = nlmsg_alloc();
1628         if (!msg)
1629                 return -ENOMEM;
1630
1631         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1632                     0, NL80211_CMD_REQ_SET_REG, 0);
1633
1634         alpha2[0] = country[0];
1635         alpha2[1] = country[1];
1636         alpha2[2] = '\0';
1637         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1638
1639         return send_and_recv_msgs(drv, msg, NULL, NULL);
1640  nla_put_failure:
1641         return -ENOBUFS;
1642 }
1643
1644
1645 static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
1646 {
1647         struct sta_info *sta;
1648
1649         sta = ap_get_sta(hapd, ta);
1650         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1651                 printf("Data/PS-poll frame from not associated STA "
1652                        MACSTR "\n", MAC2STR(ta));
1653                 if (sta && (sta->flags & WLAN_STA_AUTH))
1654                         hostapd_sta_disassoc(
1655                                 hapd, ta,
1656                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1657                 else
1658                         hostapd_sta_deauth(
1659                                 hapd, ta,
1660                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1661         }
1662 }
1663
1664
1665 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1666                                int ok)
1667 {
1668         struct ieee80211_hdr *hdr;
1669         u16 fc, type, stype;
1670         struct sta_info *sta;
1671
1672         hdr = (struct ieee80211_hdr *) buf;
1673         fc = le_to_host16(hdr->frame_control);
1674
1675         type = WLAN_FC_GET_TYPE(fc);
1676         stype = WLAN_FC_GET_STYPE(fc);
1677
1678         switch (type) {
1679         case WLAN_FC_TYPE_MGMT:
1680                 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1681                            ok ? "ACK" : "fail");
1682                 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1683                 break;
1684         case WLAN_FC_TYPE_CTRL:
1685                 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1686                            ok ? "ACK" : "fail");
1687                 break;
1688         case WLAN_FC_TYPE_DATA:
1689                 wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
1690                            ok ? "ACK" : "fail");
1691                 sta = ap_get_sta(hapd, hdr->addr1);
1692                 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1693                         wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1694                                    "activity poll", MAC2STR(sta->addr),
1695                                    ok ? "ACKed" : "did not ACK");
1696                         if (ok)
1697                                 sta->flags &= ~WLAN_STA_PENDING_POLL;
1698                 }
1699                 if (sta)
1700                         ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1701                 break;
1702         default:
1703                 printf("unknown TX callback frame type %d\n", type);
1704                 break;
1705         }
1706 }
1707
1708
1709 static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
1710                          struct hostapd_frame_info *hfi,
1711                          enum ieee80211_msg_type msg_type)
1712 {
1713         struct ieee80211_hdr *hdr;
1714         u16 fc, type, stype;
1715         size_t data_len = len;
1716         struct hostapd_data *hapd = NULL;
1717         int broadcast_bssid = 0;
1718         size_t i;
1719         u8 *bssid;
1720
1721         /*
1722          * PS-Poll frames are 16 bytes. All other frames are
1723          * 24 bytes or longer.
1724          */
1725         if (len < 16)
1726                 return;
1727
1728         hdr = (struct ieee80211_hdr *) buf;
1729         fc = le_to_host16(hdr->frame_control);
1730
1731         type = WLAN_FC_GET_TYPE(fc);
1732         stype = WLAN_FC_GET_STYPE(fc);
1733
1734         switch (type) {
1735         case WLAN_FC_TYPE_DATA:
1736                 if (len < 24)
1737                         return;
1738                 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1739                 case WLAN_FC_TODS:
1740                         bssid = hdr->addr1;
1741                         break;
1742                 default:
1743                         /* discard */
1744                         return;
1745                 }
1746                 break;
1747         case WLAN_FC_TYPE_CTRL:
1748                 /* discard non-ps-poll frames */
1749                 if (stype != WLAN_FC_STYPE_PSPOLL)
1750                         return;
1751                 bssid = hdr->addr1;
1752                 break;
1753         case WLAN_FC_TYPE_MGMT:
1754                 bssid = hdr->addr3;
1755                 break;
1756         default:
1757                 /* discard */
1758                 return;
1759         }
1760
1761         /* find interface frame belongs to */
1762         for (i = 0; i < iface->num_bss; i++) {
1763                 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1764                         hapd = iface->bss[i];
1765                         break;
1766                 }
1767         }
1768
1769         if (hapd == NULL) {
1770                 hapd = iface->bss[0];
1771
1772                 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1773                     bssid[2] != 0xff || bssid[3] != 0xff ||
1774                     bssid[4] != 0xff || bssid[5] != 0xff) {
1775                         /*
1776                          * Unknown BSSID - drop frame if this is not from
1777                          * passive scanning or a beacon (at least ProbeReq
1778                          * frames to other APs may be allowed through RX
1779                          * filtering in the wlan hw/driver)
1780                          */
1781                         if ((type != WLAN_FC_TYPE_MGMT ||
1782                              stype != WLAN_FC_STYPE_BEACON))
1783                                 return;
1784                 } else
1785                         broadcast_bssid = 1;
1786         }
1787
1788         switch (msg_type) {
1789         case ieee80211_msg_normal:
1790                 /* continue processing */
1791                 break;
1792         case ieee80211_msg_tx_callback_ack:
1793                 handle_tx_callback(hapd, buf, data_len, 1);
1794                 return;
1795         case ieee80211_msg_tx_callback_fail:
1796                 handle_tx_callback(hapd, buf, data_len, 0);
1797                 return;
1798         }
1799
1800         switch (type) {
1801         case WLAN_FC_TYPE_MGMT:
1802                 if (stype != WLAN_FC_STYPE_BEACON &&
1803                     stype != WLAN_FC_STYPE_PROBE_REQ)
1804                         wpa_printf(MSG_MSGDUMP, "MGMT");
1805                 if (broadcast_bssid) {
1806                         for (i = 0; i < iface->num_bss; i++)
1807                                 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1808                                                 stype, hfi);
1809                 } else
1810                         ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1811                 break;
1812         case WLAN_FC_TYPE_CTRL:
1813                 /* can only get here with PS-Poll frames */
1814                 wpa_printf(MSG_DEBUG, "CTRL");
1815                 handle_unknown_sta(hapd, hdr->addr2);
1816                 break;
1817         case WLAN_FC_TYPE_DATA:
1818                 handle_unknown_sta(hapd, hdr->addr2);
1819                 break;
1820         }
1821 }
1822
1823
1824 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1825 {
1826         struct i802_driver_data *drv = eloop_ctx;
1827         struct hostapd_data *hapd = drv->hapd;
1828         struct sockaddr_ll lladdr;
1829         unsigned char buf[3000];
1830         int len;
1831         socklen_t fromlen = sizeof(lladdr);
1832
1833         len = recvfrom(sock, buf, sizeof(buf), 0,
1834                        (struct sockaddr *)&lladdr, &fromlen);
1835         if (len < 0) {
1836                 perror("recv");
1837                 return;
1838         }
1839
1840         if (have_ifidx(drv, lladdr.sll_ifindex))
1841                 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1842 }
1843
1844
1845 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1846 {
1847         struct i802_driver_data *drv = eloop_ctx;
1848         int len;
1849         unsigned char buf[3000];
1850         struct hostapd_data *hapd = drv->hapd;
1851         struct ieee80211_radiotap_iterator iter;
1852         int ret;
1853         struct hostapd_frame_info hfi;
1854         int injected = 0, failed = 0, msg_type, rxflags = 0;
1855
1856         len = recv(sock, buf, sizeof(buf), 0);
1857         if (len < 0) {
1858                 perror("recv");
1859                 return;
1860         }
1861
1862         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1863                 printf("received invalid radiotap frame\n");
1864                 return;
1865         }
1866
1867         memset(&hfi, 0, sizeof(hfi));
1868
1869         while (1) {
1870                 ret = ieee80211_radiotap_iterator_next(&iter);
1871                 if (ret == -ENOENT)
1872                         break;
1873                 if (ret) {
1874                         printf("received invalid radiotap frame (%d)\n", ret);
1875                         return;
1876                 }
1877                 switch (iter.this_arg_index) {
1878                 case IEEE80211_RADIOTAP_FLAGS:
1879                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1880                                 len -= 4;
1881                         break;
1882                 case IEEE80211_RADIOTAP_RX_FLAGS:
1883                         rxflags = 1;
1884                         break;
1885                 case IEEE80211_RADIOTAP_TX_FLAGS:
1886                         injected = 1;
1887                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1888                                         IEEE80211_RADIOTAP_F_TX_FAIL;
1889                         break;
1890                 case IEEE80211_RADIOTAP_DATA_RETRIES:
1891                         break;
1892                 case IEEE80211_RADIOTAP_CHANNEL:
1893                         /* TODO convert from freq/flags to channel number
1894                         hfi.channel = XXX;
1895                         hfi.phytype = XXX;
1896                          */
1897                         break;
1898                 case IEEE80211_RADIOTAP_RATE:
1899                         hfi.datarate = *iter.this_arg * 5;
1900                         break;
1901                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1902                         hfi.ssi_signal = *iter.this_arg;
1903                         break;
1904                 }
1905         }
1906
1907         if (rxflags && injected)
1908                 return;
1909
1910         if (!injected)
1911                 msg_type = ieee80211_msg_normal;
1912         else if (failed)
1913                 msg_type = ieee80211_msg_tx_callback_fail;
1914         else
1915                 msg_type = ieee80211_msg_tx_callback_ack;
1916
1917         handle_frame(hapd->iface, buf + iter.max_length,
1918                      len - iter.max_length, &hfi, msg_type);
1919 }
1920
1921
1922 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
1923 {
1924         char buf[IFNAMSIZ];
1925         struct sockaddr_ll ll;
1926         int optval;
1927         socklen_t optlen;
1928
1929         snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
1930         buf[IFNAMSIZ - 1] = '\0';
1931
1932         drv->monitor_ifidx =
1933                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
1934
1935         if (drv->monitor_ifidx < 0)
1936                 return -1;
1937
1938         if (hostapd_set_iface_flags(drv, buf, 1))
1939                 goto error;
1940
1941         memset(&ll, 0, sizeof(ll));
1942         ll.sll_family = AF_PACKET;
1943         ll.sll_ifindex = drv->monitor_ifidx;
1944         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
1945         if (drv->monitor_sock < 0) {
1946                 perror("socket[PF_PACKET,SOCK_RAW]");
1947                 goto error;
1948         }
1949
1950         if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
1951                  sizeof(ll)) < 0) {
1952                 perror("monitor socket bind");
1953                 goto error;
1954         }
1955
1956         optlen = sizeof(optval);
1957         optval = 20;
1958         if (setsockopt
1959             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
1960                 perror("Failed to set socket priority");
1961                 goto error;
1962         }
1963
1964         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
1965                                      drv, NULL)) {
1966                 printf("Could not register monitor read socket\n");
1967                 goto error;
1968         }
1969
1970         return 0;
1971  error:
1972         nl80211_remove_iface(drv, drv->monitor_ifidx);
1973         return -1;
1974 }
1975
1976
1977 static int nl80211_set_master_mode(struct i802_driver_data *drv,
1978                                    const char *ifname)
1979 {
1980         struct nl_msg *msg;
1981         int ret = -ENOBUFS;
1982
1983         msg = nlmsg_alloc();
1984         if (!msg)
1985                 return -ENOMEM;
1986
1987         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1988                     0, NL80211_CMD_SET_INTERFACE, 0);
1989         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1990                     if_nametoindex(ifname));
1991         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
1992
1993         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1994         if (!ret)
1995                 return 0;
1996  nla_put_failure:
1997         wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
1998                    "mode.", ifname);
1999         return ret;
2000 }
2001
2002
2003 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
2004 {
2005         struct ifreq ifr;
2006         struct sockaddr_ll addr;
2007
2008         drv->ioctl_sock = -1;
2009
2010         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2011         if (drv->ioctl_sock < 0) {
2012                 perror("socket[PF_INET,SOCK_DGRAM]");
2013                 return -1;
2014         }
2015
2016         /* start listening for EAPOL on the default AP interface */
2017         add_ifidx(drv, if_nametoindex(drv->iface));
2018
2019         if (hostapd_set_iface_flags(drv, drv->iface, 0))
2020                 return -1;
2021
2022         if (bssid) {
2023                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2024                 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2025                 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2026
2027                 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2028                         perror("ioctl(SIOCSIFHWADDR)");
2029                         return -1;
2030                 }
2031         }
2032
2033         /*
2034          * initialise generic netlink and nl80211
2035          */
2036         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2037         if (!drv->nl_cb) {
2038                 printf("Failed to allocate netlink callbacks.\n");
2039                 return -1;
2040         }
2041
2042         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2043         if (!drv->nl_handle) {
2044                 printf("Failed to allocate netlink handle.\n");
2045                 return -1;
2046         }
2047
2048         if (genl_connect(drv->nl_handle)) {
2049                 printf("Failed to connect to generic netlink.\n");
2050                 return -1;
2051         }
2052
2053 #ifdef CONFIG_LIBNL20
2054         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
2055                 printf("Failed to allocate generic netlink cache.\n");
2056                 return -1;
2057         }
2058 #else /* CONFIG_LIBNL20 */
2059         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2060         if (!drv->nl_cache) {
2061                 printf("Failed to allocate generic netlink cache.\n");
2062                 return -1;
2063         }
2064 #endif /* CONFIG_LIBNL20 */
2065
2066         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2067         if (!drv->nl80211) {
2068                 printf("nl80211 not found.\n");
2069                 return -1;
2070         }
2071
2072         /* Initialise a monitor interface */
2073         if (nl80211_create_monitor_interface(drv))
2074                 return -1;
2075
2076         if (nl80211_set_master_mode(drv, drv->iface))
2077                 goto fail1;
2078
2079         if (hostapd_set_iface_flags(drv, drv->iface, 1))
2080                 goto fail1;
2081
2082         memset(&addr, 0, sizeof(addr));
2083         addr.sll_family = AF_PACKET;
2084         addr.sll_ifindex = ifr.ifr_ifindex;
2085         wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2086                    addr.sll_ifindex);
2087
2088         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2089         if (drv->eapol_sock < 0) {
2090                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2091                 goto fail1;
2092         }
2093
2094         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2095         {
2096                 printf("Could not register read socket for eapol\n");
2097                 return -1;
2098         }
2099
2100         memset(&ifr, 0, sizeof(ifr));
2101         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2102         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2103                 perror("ioctl(SIOCGIFHWADDR)");
2104                 goto fail1;
2105         }
2106
2107         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2108                 printf("Invalid HW-addr family 0x%04x\n",
2109                        ifr.ifr_hwaddr.sa_family);
2110                 goto fail1;
2111         }
2112         memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2113
2114         return 0;
2115
2116 fail1:
2117         nl80211_remove_iface(drv, drv->monitor_ifidx);
2118         return -1;
2119 }
2120
2121
2122 static int i802_get_inact_sec(void *priv, const u8 *addr)
2123 {
2124         struct hostap_sta_driver_data data;
2125         int ret;
2126
2127         data.inactive_msec = (unsigned long) -1;
2128         ret = i802_read_sta_data(priv, &data, addr);
2129         if (ret || data.inactive_msec == (unsigned long) -1)
2130                 return -1;
2131         return data.inactive_msec / 1000;
2132 }
2133
2134
2135 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2136 {
2137 #if 0
2138         /* TODO */
2139 #endif
2140         return 0;
2141 }
2142
2143
2144 static void
2145 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2146                                        char *custom)
2147 {
2148         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2149
2150         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2151                 char *pos;
2152                 u8 addr[ETH_ALEN];
2153                 pos = strstr(custom, "addr=");
2154                 if (pos == NULL) {
2155                         wpa_printf(MSG_DEBUG,
2156                                    "MLME-MICHAELMICFAILURE.indication "
2157                                    "without sender address ignored");
2158                         return;
2159                 }
2160                 pos += 5;
2161                 if (hwaddr_aton(pos, addr) == 0) {
2162                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2163                 } else {
2164                         wpa_printf(MSG_DEBUG,
2165                                    "MLME-MICHAELMICFAILURE.indication "
2166                                    "with invalid MAC address");
2167                 }
2168         }
2169 }
2170
2171
2172 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2173                                             char *data, int len)
2174 {
2175         struct iw_event iwe_buf, *iwe = &iwe_buf;
2176         char *pos, *end, *custom, *buf;
2177
2178         pos = data;
2179         end = data + len;
2180
2181         while (pos + IW_EV_LCP_LEN <= end) {
2182                 /* Event data may be unaligned, so make a local, aligned copy
2183                  * before processing. */
2184                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2185                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2186                            iwe->cmd, iwe->len);
2187                 if (iwe->len <= IW_EV_LCP_LEN)
2188                         return;
2189
2190                 custom = pos + IW_EV_POINT_LEN;
2191                 if (drv->we_version > 18 &&
2192                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
2193                      iwe->cmd == IWEVCUSTOM)) {
2194                         /* WE-19 removed the pointer from struct iw_point */
2195                         char *dpos = (char *) &iwe_buf.u.data.length;
2196                         int dlen = dpos - (char *) &iwe_buf;
2197                         memcpy(dpos, pos + IW_EV_LCP_LEN,
2198                                sizeof(struct iw_event) - dlen);
2199                 } else {
2200                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2201                         custom += IW_EV_POINT_OFF;
2202                 }
2203
2204                 switch (iwe->cmd) {
2205                 case IWEVCUSTOM:
2206                         if (custom + iwe->u.data.length > end)
2207                                 return;
2208                         buf = malloc(iwe->u.data.length + 1);
2209                         if (buf == NULL)
2210                                 return;
2211                         memcpy(buf, custom, iwe->u.data.length);
2212                         buf[iwe->u.data.length] = '\0';
2213                         hostapd_wireless_event_wireless_custom(drv, buf);
2214                         free(buf);
2215                         break;
2216                 }
2217
2218                 pos += iwe->len;
2219         }
2220 }
2221
2222
2223 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2224                                                struct nlmsghdr *h, int len)
2225 {
2226         struct ifinfomsg *ifi;
2227         int attrlen, nlmsg_len, rta_len;
2228         struct rtattr *attr;
2229
2230         if (len < (int) sizeof(*ifi))
2231                 return;
2232
2233         ifi = NLMSG_DATA(h);
2234
2235         /* TODO: use ifi->ifi_index to filter out wireless events from other
2236          * interfaces */
2237
2238         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2239
2240         attrlen = h->nlmsg_len - nlmsg_len;
2241         if (attrlen < 0)
2242                 return;
2243
2244         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
2245
2246         rta_len = RTA_ALIGN(sizeof(struct rtattr));
2247         while (RTA_OK(attr, attrlen)) {
2248                 if (attr->rta_type == IFLA_WIRELESS) {
2249                         hostapd_wireless_event_wireless(
2250                                 drv, ((char *) attr) + rta_len,
2251                                 attr->rta_len - rta_len);
2252                 }
2253                 attr = RTA_NEXT(attr, attrlen);
2254         }
2255 }
2256
2257
2258 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2259                                            void *sock_ctx)
2260 {
2261         char buf[256];
2262         int left;
2263         struct sockaddr_nl from;
2264         socklen_t fromlen;
2265         struct nlmsghdr *h;
2266         struct i802_driver_data *drv = eloop_ctx;
2267
2268         fromlen = sizeof(from);
2269         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2270                         (struct sockaddr *) &from, &fromlen);
2271         if (left < 0) {
2272                 if (errno != EINTR && errno != EAGAIN)
2273                         perror("recvfrom(netlink)");
2274                 return;
2275         }
2276
2277         h = (struct nlmsghdr *) buf;
2278         while (left >= (int) sizeof(*h)) {
2279                 int len, plen;
2280
2281                 len = h->nlmsg_len;
2282                 plen = len - sizeof(*h);
2283                 if (len > left || plen < 0) {
2284                         printf("Malformed netlink message: "
2285                                "len=%d left=%d plen=%d\n",
2286                                len, left, plen);
2287                         break;
2288                 }
2289
2290                 switch (h->nlmsg_type) {
2291                 case RTM_NEWLINK:
2292                         hostapd_wireless_event_rtm_newlink(drv, h, plen);
2293                         break;
2294                 }
2295
2296                 len = NLMSG_ALIGN(len);
2297                 left -= len;
2298                 h = (struct nlmsghdr *) ((char *) h + len);
2299         }
2300
2301         if (left > 0) {
2302                 printf("%d extra bytes in the end of netlink message\n", left);
2303         }
2304 }
2305
2306
2307 static int hostap_get_we_version(struct i802_driver_data *drv)
2308 {
2309         struct iw_range *range;
2310         struct iwreq iwr;
2311         int minlen;
2312         size_t buflen;
2313
2314         drv->we_version = 0;
2315
2316         /*
2317          * Use larger buffer than struct iw_range in order to allow the
2318          * structure to grow in the future.
2319          */
2320         buflen = sizeof(struct iw_range) + 500;
2321         range = os_zalloc(buflen);
2322         if (range == NULL)
2323                 return -1;
2324
2325         memset(&iwr, 0, sizeof(iwr));
2326         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2327         iwr.u.data.pointer = (caddr_t) range;
2328         iwr.u.data.length = buflen;
2329
2330         minlen = ((char *) &range->enc_capa) - (char *) range +
2331                 sizeof(range->enc_capa);
2332
2333         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2334                 perror("ioctl[SIOCGIWRANGE]");
2335                 free(range);
2336                 return -1;
2337         } else if (iwr.u.data.length >= minlen &&
2338                    range->we_version_compiled >= 18) {
2339                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2340                            "WE(source)=%d enc_capa=0x%x",
2341                            range->we_version_compiled,
2342                            range->we_version_source,
2343                            range->enc_capa);
2344                 drv->we_version = range->we_version_compiled;
2345         }
2346
2347         free(range);
2348         return 0;
2349 }
2350
2351
2352 static int i802_wireless_event_init(void *priv)
2353 {
2354         struct i802_driver_data *drv = priv;
2355         int s;
2356         struct sockaddr_nl local;
2357
2358         hostap_get_we_version(drv);
2359
2360         drv->wext_sock = -1;
2361
2362         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2363         if (s < 0) {
2364                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2365                 return -1;
2366         }
2367
2368         memset(&local, 0, sizeof(local));
2369         local.nl_family = AF_NETLINK;
2370         local.nl_groups = RTMGRP_LINK;
2371         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2372                 perror("bind(netlink)");
2373                 close(s);
2374                 return -1;
2375         }
2376
2377         eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2378                                  NULL);
2379         drv->wext_sock = s;
2380
2381         return 0;
2382 }
2383
2384
2385 static void i802_wireless_event_deinit(void *priv)
2386 {
2387         struct i802_driver_data *drv = priv;
2388         if (drv->wext_sock < 0)
2389                 return;
2390         eloop_unregister_read_sock(drv->wext_sock);
2391         close(drv->wext_sock);
2392 }
2393
2394
2395 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2396 {
2397         struct i802_driver_data *drv = priv;
2398         struct ieee80211_mgmt mgmt;
2399
2400         memset(&mgmt, 0, sizeof(mgmt));
2401         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2402                                           WLAN_FC_STYPE_DEAUTH);
2403         memcpy(mgmt.da, addr, ETH_ALEN);
2404         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2405         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2406         mgmt.u.deauth.reason_code = host_to_le16(reason);
2407         return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2408                                       sizeof(mgmt.u.deauth), 0);
2409 }
2410
2411
2412 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2413 {
2414         struct i802_driver_data *drv = priv;
2415         struct ieee80211_mgmt mgmt;
2416
2417         memset(&mgmt, 0, sizeof(mgmt));
2418         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2419                                           WLAN_FC_STYPE_DISASSOC);
2420         memcpy(mgmt.da, addr, ETH_ALEN);
2421         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2422         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2423         mgmt.u.disassoc.reason_code = host_to_le16(reason);
2424         return  i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2425                                        sizeof(mgmt.u.disassoc), 0);
2426 }
2427
2428
2429 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2430 {
2431         struct i802_driver_data *drv;
2432
2433         drv = os_zalloc(sizeof(struct i802_driver_data));
2434         if (drv == NULL) {
2435                 printf("Could not allocate memory for i802 driver data\n");
2436                 return NULL;
2437         }
2438
2439         drv->hapd = hapd;
2440         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2441
2442         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2443         drv->if_indices = drv->default_if_indices;
2444         drv->bridge = if_nametoindex(hapd->conf->bridge);
2445
2446         if (i802_init_sockets(drv, bssid))
2447                 goto failed;
2448
2449         return drv;
2450
2451 failed:
2452         free(drv);
2453         return NULL;
2454 }
2455
2456
2457 static void *i802_init(struct hostapd_data *hapd)
2458 {
2459         return i802_init_bssid(hapd, NULL);
2460 }
2461
2462
2463 static void i802_deinit(void *priv)
2464 {
2465         struct i802_driver_data *drv = priv;
2466
2467         if (drv->last_freq_ht) {
2468                 /* Clear HT flags from the driver */
2469                 struct hostapd_freq_params freq;
2470                 os_memset(&freq, 0, sizeof(freq));
2471                 freq.freq = drv->last_freq;
2472                 i802_set_freq2(priv, &freq);
2473         }
2474
2475         i802_del_beacon(drv);
2476
2477         /* remove monitor interface */
2478         nl80211_remove_iface(drv, drv->monitor_ifidx);
2479
2480         (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2481
2482         if (drv->monitor_sock >= 0) {
2483                 eloop_unregister_read_sock(drv->monitor_sock);
2484                 close(drv->monitor_sock);
2485         }
2486         if (drv->ioctl_sock >= 0)
2487                 close(drv->ioctl_sock);
2488         if (drv->eapol_sock >= 0) {
2489                 eloop_unregister_read_sock(drv->eapol_sock);
2490                 close(drv->eapol_sock);
2491         }
2492
2493         genl_family_put(drv->nl80211);
2494         nl_cache_free(drv->nl_cache);
2495         nl_handle_destroy(drv->nl_handle);
2496         nl_cb_put(drv->nl_cb);
2497
2498         if (drv->if_indices != drv->default_if_indices)
2499                 free(drv->if_indices);
2500
2501         free(drv);
2502 }
2503
2504
2505 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2506         .name = "nl80211",
2507         .init = i802_init,
2508         .init_bssid = i802_init_bssid,
2509         .deinit = i802_deinit,
2510         .wireless_event_init = i802_wireless_event_init,
2511         .wireless_event_deinit = i802_wireless_event_deinit,
2512         .set_ieee8021x = i802_set_ieee8021x,
2513         .set_privacy = i802_set_privacy,
2514         .set_encryption = i802_set_encryption,
2515         .get_seqnum = i802_get_seqnum,
2516         .flush = i802_flush,
2517         .read_sta_data = i802_read_sta_data,
2518         .send_eapol = i802_send_eapol,
2519         .sta_set_flags = i802_sta_set_flags,
2520         .sta_deauth = i802_sta_deauth,
2521         .sta_disassoc = i802_sta_disassoc,
2522         .sta_remove = i802_sta_remove,
2523         .send_mgmt_frame = i802_send_mgmt_frame,
2524         .sta_add2 = i802_sta_add2,
2525         .get_inact_sec = i802_get_inact_sec,
2526         .sta_clear_stats = i802_sta_clear_stats,
2527         .set_freq2 = i802_set_freq2,
2528         .set_rts = i802_set_rts,
2529         .get_rts = i802_get_rts,
2530         .set_frag = i802_set_frag,
2531         .get_frag = i802_get_frag,
2532         .set_retry = i802_set_retry,
2533         .get_retry = i802_get_retry,
2534         .set_rate_sets = i802_set_rate_sets,
2535         .set_regulatory_domain = i802_set_regulatory_domain,
2536         .set_beacon = i802_set_beacon,
2537         .set_internal_bridge = i802_set_internal_bridge,
2538         .set_beacon_int = i802_set_beacon_int,
2539         .set_dtim_period = i802_set_dtim_period,
2540         .set_cts_protect = i802_set_cts_protect,
2541         .set_preamble = i802_set_preamble,
2542         .set_short_slot_time = i802_set_short_slot_time,
2543         .set_tx_queue_params = i802_set_tx_queue_params,
2544         .bss_add = i802_bss_add,
2545         .bss_remove = i802_bss_remove,
2546         .if_add = i802_if_add,
2547         .if_update = i802_if_update,
2548         .if_remove = i802_if_remove,
2549         .get_hw_feature_data = i802_get_hw_feature_data,
2550         .set_sta_vlan = i802_set_sta_vlan,
2551         .set_country = i802_set_country,
2552 };