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