hostapd/driver_nl80211.c

   1 /*
   2  * hostapd / Kernel driver communication via nl80211
   3  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Alternatively, this software may be distributed under the terms of BSD
  13  * license.
  14  *
  15  * See README and COPYING for more details.
  16  */
  17
  18 #include "includes.h"
  19
  20 #include <sys/ioctl.h>
  21 #include <netlink/genl/genl.h>
  22 #include <netlink/genl/family.h>
  23 #include <netlink/genl/ctrl.h>
  24 #include <netlink/msg.h>
  25 #include <netlink/attr.h>
  26 #include <linux/nl80211.h>
  27 #include <net/if.h>
  28 #include <linux/if_packet.h>
  29 #include <linux/if_ether.h>   /* The L2 protocols */
  30 #include "wireless_copy.h"
  31 #include <net/if_arp.h>
  32
  33 #include "hostapd.h"
  34 #include "driver.h"
  35 #include "ieee802_1x.h"
  36 #include "eloop.h"
  37 #include "ieee802_11.h"
  38 #include "sta_info.h"
  39 #include "hw_features.h"
  40 #include "mlme.h"
  41 #include "radiotap.h"
  42 #include "radiotap_iter.h"
  43
  44 enum ieee80211_msg_type {
  45         ieee80211_msg_normal = 0,
  46         ieee80211_msg_tx_callback_ack = 1,
  47         ieee80211_msg_tx_callback_fail = 2,
  48 };
  49
  50 struct i802_driver_data {
  51         struct hostapd_data *hapd;
  52
  53         char iface[IFNAMSIZ + 1];
  54         int bridge;
  55         int ioctl_sock; /* socket for ioctl() use */
  56         int wext_sock; /* socket for wireless events */
  57         int eapol_sock; /* socket for EAPOL frames */
  58         int monitor_sock; /* socket for monitor */
  59         int monitor_ifidx;
  60
  61         int default_if_indices[16];
  62         int *if_indices;
  63         int num_if_indices;
  64
  65         int we_version;
  66         struct nl_handle *nl_handle;
  67         struct nl_cache *nl_cache;
  68         struct nl_cb *nl_cb;
  69         struct genl_family *nl80211;
  70         int dtim_period, beacon_int;
  71         unsigned int beacon_set:1;
  72         unsigned int ieee802_1x_active:1;
  73
  74         int last_freq;
  75         int last_freq_ht;
  76 };
  77
  78
  79 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
  80 {
  81         int i;
  82         int *old;
  83
  84         for (i = 0; i < drv->num_if_indices; i++) {
  85                 if (drv->if_indices[i] == 0) {
  86                         drv->if_indices[i] = ifidx;
  87                         return;
  88                 }
  89         }
  90
  91         if (drv->if_indices != drv->default_if_indices)
  92                 old = drv->if_indices;
  93         else
  94                 old = NULL;
  95
  96         drv->if_indices = realloc(old,
  97                                   sizeof(int) * (drv->num_if_indices + 1));
  98         if (!drv->if_indices) {
  99                 if (!old)
 100                         drv->if_indices = drv->default_if_indices;
 101                 else
 102                         drv->if_indices = old;
 103                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
 104                            "interfaces");
 105                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
 106                 return;
 107         }
 108         drv->if_indices[drv->num_if_indices] = ifidx;
 109         drv->num_if_indices++;
 110 }
 111
 112
 113 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
 114 {
 115         int i;
 116
 117         for (i = 0; i < drv->num_if_indices; i++) {
 118                 if (drv->if_indices[i] == ifidx) {
 119                         drv->if_indices[i] = 0;
 120                         break;
 121                 }
 122         }
 123 }
 124
 125
 126 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
 127 {
 128         int i;
 129
 130         if (ifidx == drv->bridge)
 131                 return 1;
 132
 133         for (i = 0; i < drv->num_if_indices; i++)
 134                 if (drv->if_indices[i] == ifidx)
 135                         return 1;
 136
 137         return 0;
 138 }
 139
 140
 141 /* nl80211 code */
 142 static int ack_handler(struct nl_msg *msg, void *arg)
 143 {
 144         int *err = arg;
 145         *err = 0;
 146         return NL_STOP;
 147 }
 148
 149 static int finish_handler(struct nl_msg *msg, void *arg)
 150 {
 151         int *ret = arg;
 152         *ret = 0;
 153         return NL_SKIP;
 154 }
 155
 156 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 157                          void *arg)
 158 {
 159         int *ret = arg;
 160         *ret = err->error;
 161         return NL_SKIP;
 162 }
 163
 164 static int send_and_recv_msgs(struct i802_driver_data *drv,
 165                               struct nl_msg *msg,
 166                               int (*valid_handler)(struct nl_msg *, void *),
 167                               void *valid_data)
 168 {
 169         struct nl_cb *cb;
 170         int err = -ENOMEM;
 171
 172         cb = nl_cb_clone(drv->nl_cb);
 173         if (!cb)
 174                 goto out;
 175
 176         err = nl_send_auto_complete(drv->nl_handle, msg);
 177         if (err < 0)
 178                 goto out;
 179
 180         err = 1;
 181
 182         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 183         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 184         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 185
 186         if (valid_handler)
 187                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 188                           valid_handler, valid_data);
 189
 190         while (err > 0)
 191                 nl_recvmsgs(drv->nl_handle, cb);
 192  out:
 193         nl_cb_put(cb);
 194         nlmsg_free(msg);
 195         return err;
 196 }
 197
 198 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
 199                                    const char *ifname, int dev_up)
 200 {
 201         struct ifreq ifr;
 202
 203         if (drv->ioctl_sock < 0)
 204                 return -1;
 205
 206         memset(&ifr, 0, sizeof(ifr));
 207         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 208
 209         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 210                 perror("ioctl[SIOCGIFFLAGS]");
 211                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 212                            drv->iface);
 213                 return -1;
 214         }
 215
 216         if (dev_up)
 217                 ifr.ifr_flags |= IFF_UP;
 218         else
 219                 ifr.ifr_flags &= ~IFF_UP;
 220
 221         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 222                 perror("ioctl[SIOCSIFFLAGS]");
 223                 return -1;
 224         }
 225
 226         return 0;
 227 }
 228
 229
 230 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
 231                        const char *alg, const u8 *addr, int idx, const u8 *key,
 232                        size_t key_len, int txkey)
 233 {
 234         struct nl_msg *msg;
 235         int ret;
 236
 237         msg = nlmsg_alloc();
 238         if (!msg)
 239                 return -ENOMEM;
 240
 241         if (strcmp(alg, "none") == 0) {
 242                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 243                             0, NL80211_CMD_DEL_KEY, 0);
 244         } else {
 245                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 246                             0, NL80211_CMD_NEW_KEY, 0);
 247                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
 248                 if (strcmp(alg, "WEP") == 0) {
 249                         if (key_len == 5)
 250                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 251                                             0x000FAC01);
 252                         else
 253                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
 254                                             0x000FAC05);
 255                 } else if (strcmp(alg, "TKIP") == 0)
 256                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
 257                 else if (strcmp(alg, "CCMP") == 0)
 258                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
 259                 else if (strcmp(alg, "IGTK") == 0)
 260                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
 261                 else {
 262                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
 263                                    "algorithm '%s'", __func__, alg);
 264                         nlmsg_free(msg);
 265                         return -1;
 266                 }
 267         }
 268
 269         if (addr)
 270                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 271         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 272         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 273
 274         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 275         if (ret == -ENOENT)
 276                 ret = 0;
 277
 278         /*
 279          * If we failed or don't need to set the default TX key (below),
 280          * we're done here.
 281          */
 282         if (ret || !txkey || addr)
 283                 return ret;
 284
 285         msg = nlmsg_alloc();
 286         if (!msg)
 287                 return -ENOMEM;
 288
 289         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 290                     0, NL80211_CMD_SET_KEY, 0);
 291         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 292         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
 293 #ifdef NL80211_MFP_PENDING
 294         if (strcmp(alg, "IGTK") == 0)
 295                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
 296         else
 297                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 298 #else /* NL80211_MFP_PENDING */
 299         NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
 300 #endif /* NL80211_MFP_PENDING */
 301
 302         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 303         if (ret == -ENOENT)
 304                 ret = 0;
 305         return ret;
 306  nla_put_failure:
 307         return -ENOBUFS;
 308 }
 309
 310
 311 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
 312                                const u8 *addr, int idx, const u8 *key,
 313                                size_t key_len, int txkey)
 314 {
 315         struct i802_driver_data *drv = priv;
 316         int ret;
 317
 318         ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
 319                           key_len, txkey);
 320         if (ret < 0)
 321                 return ret;
 322
 323         if (strcmp(alg, "IGTK") == 0) {
 324                 ret = nl_set_encr(drv->monitor_ifidx, drv, alg, addr, idx, key,
 325                                   key_len, txkey);
 326         }
 327
 328         return ret;
 329 }
 330
 331
 332 static inline int min_int(int a, int b)
 333 {
 334         if (a < b)
 335                 return a;
 336         return b;
 337 }
 338
 339
 340 static int get_key_handler(struct nl_msg *msg, void *arg)
 341 {
 342         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 343         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 344
 345         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 346                   genlmsg_attrlen(gnlh, 0), NULL);
 347
 348         /*
 349          * TODO: validate the key index and mac address!
 350          * Otherwise, there's a race condition as soon as
 351          * the kernel starts sending key notifications.
 352          */
 353
 354         if (tb[NL80211_ATTR_KEY_SEQ])
 355                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 356                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
 357         return NL_SKIP;
 358 }
 359
 360
 361 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
 362                            int idx, u8 *seq)
 363 {
 364         struct i802_driver_data *drv = priv;
 365         struct nl_msg *msg;
 366
 367         msg = nlmsg_alloc();
 368         if (!msg)
 369                 return -ENOMEM;
 370
 371         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 372                     0, NL80211_CMD_GET_KEY, 0);
 373
 374         if (addr)
 375                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 376         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
 377         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
 378
 379         memset(seq, 0, 6);
 380
 381         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
 382  nla_put_failure:
 383         return -ENOBUFS;
 384 }
 385
 386
 387 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
 388                               int mode)
 389 {
 390 #ifdef NL80211_ATTR_BSS_BASIC_RATES
 391         struct i802_driver_data *drv = priv;
 392         struct nl_msg *msg;
 393         u8 rates[NL80211_MAX_SUPP_RATES];
 394         u8 rates_len = 0;
 395         int i;
 396
 397         msg = nlmsg_alloc();
 398         if (!msg)
 399                 return -ENOMEM;
 400
 401         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 402                     NL80211_CMD_SET_BSS, 0);
 403
 404         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
 405                 rates[rates_len++] = basic_rates[i] / 5;
 406
 407         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
 408
 409         /* TODO: multi-BSS support */
 410         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 411
 412         return send_and_recv_msgs(drv, msg, NULL, NULL);
 413  nla_put_failure:
 414         return -ENOBUFS;
 415 #else /* NL80211_ATTR_BSS_BASIC_RATES */
 416         return -1;
 417 #endif /* NL80211_ATTR_BSS_BASIC_RATES */
 418 }
 419
 420
 421 static int i802_send_frame(void *priv, const void *data, size_t len,
 422                            int encrypt, int flags)
 423 {
 424         __u8 rtap_hdr[] = {
 425                 0x00, 0x00, /* radiotap version */
 426                 0x0e, 0x00, /* radiotap length */
 427                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
 428                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
 429                 0x00,       /* padding */
 430                 0x00, 0x00, /* RX and TX flags to indicate that */
 431                 0x00, 0x00, /* this is the injected frame directly */
 432         };
 433         struct i802_driver_data *drv = priv;
 434         struct iovec iov[2] = {
 435                 {
 436                         .iov_base = &rtap_hdr,
 437                         .iov_len = sizeof(rtap_hdr),
 438                 },
 439                 {
 440                         .iov_base = (void*)data,
 441                         .iov_len = len,
 442                 }
 443         };
 444         struct msghdr msg = {
 445                 .msg_name = NULL,
 446                 .msg_namelen = 0,
 447                 .msg_iov = iov,
 448                 .msg_iovlen = 2,
 449                 .msg_control = NULL,
 450                 .msg_controllen = 0,
 451                 .msg_flags = 0,
 452         };
 453
 454         if (encrypt)
 455                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
 456
 457         return sendmsg(drv->monitor_sock, &msg, flags);
 458 }
 459
 460 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
 461                                 int flags)
 462 {
 463         struct ieee80211_mgmt *mgmt;
 464         int do_not_encrypt = 0;
 465         u16 fc;
 466
 467         mgmt = (struct ieee80211_mgmt *) data;
 468         fc = le_to_host16(mgmt->frame_control);
 469
 470         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
 471             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
 472                 /*
 473                  * Only one of the authentication frame types is encrypted.
 474                  * In order for static WEP encryption to work properly (i.e.,
 475                  * to not encrypt the frame), we need to tell mac80211 about
 476                  * the frames that must not be encrypted.
 477                  */
 478                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 479                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
 480                 if (auth_alg == WLAN_AUTH_OPEN ||
 481                     (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
 482                         do_not_encrypt = 1;
 483         }
 484
 485         return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
 486 }
 487
 488 /* Set kernel driver on given frequency (MHz) */
 489 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
 490 {
 491 #ifdef NL80211_ATTR_WIPHY_FREQ
 492         struct i802_driver_data *drv = priv;
 493         struct nl_msg *msg;
 494
 495         msg = nlmsg_alloc();
 496         if (!msg)
 497                 return -1;
 498
 499         drv->last_freq = freq->freq;
 500         drv->last_freq_ht = freq->ht_enabled;
 501
 502         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
 503                     NL80211_CMD_SET_WIPHY, 0);
 504
 505         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 506         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
 507         if (freq->ht_enabled) {
 508                 switch (freq->sec_channel_offset) {
 509                 case -1:
 510                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 511                                     NL80211_SEC_CHAN_BELOW);
 512                         break;
 513                 case 1:
 514                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 515                                     NL80211_SEC_CHAN_ABOVE);
 516                         break;
 517                 default:
 518                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
 519                                     NL80211_SEC_CHAN_DISABLED);
 520                         break;
 521                 }
 522         }
 523
 524         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 525                 return 0;
 526  nla_put_failure:
 527         return -1;
 528 #else /* NL80211_ATTR_WIPHY_FREQ */
 529         struct i802_driver_data *drv = priv;
 530         struct iwreq iwr;
 531
 532         memset(&iwr, 0, sizeof(iwr));
 533         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 534         iwr.u.freq.m = freq->freq;
 535         iwr.u.freq.e = 6;
 536
 537         if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
 538                 perror("ioctl[SIOCSIWFREQ]");
 539                 return -1;
 540         }
 541
 542         return 0;
 543 #endif /* NL80211_ATTR_WIPHY_FREQ */
 544 }
 545
 546
 547 static int i802_set_rts(void *priv, int rts)
 548 {
 549         struct i802_driver_data *drv = priv;
 550         struct iwreq iwr;
 551
 552         memset(&iwr, 0, sizeof(iwr));
 553         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 554         iwr.u.rts.value = rts;
 555         iwr.u.rts.fixed = 1;
 556
 557         if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
 558                 perror("ioctl[SIOCSIWRTS]");
 559                 return -1;
 560         }
 561
 562         return 0;
 563 }
 564
 565
 566 static int i802_get_rts(void *priv, int *rts)
 567 {
 568         struct i802_driver_data *drv = priv;
 569         struct iwreq iwr;
 570
 571         memset(&iwr, 0, sizeof(iwr));
 572         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 573
 574         if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
 575                 perror("ioctl[SIOCGIWRTS]");
 576                 return -1;
 577         }
 578
 579         *rts = iwr.u.rts.value;
 580
 581         return 0;
 582 }
 583
 584
 585 static int i802_set_frag(void *priv, int frag)
 586 {
 587         struct i802_driver_data *drv = priv;
 588         struct iwreq iwr;
 589
 590         memset(&iwr, 0, sizeof(iwr));
 591         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 592         iwr.u.frag.value = frag;
 593         iwr.u.frag.fixed = 1;
 594
 595         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 596                 perror("ioctl[SIOCSIWFRAG]");
 597                 return -1;
 598         }
 599
 600         return 0;
 601 }
 602
 603
 604 static int i802_get_frag(void *priv, int *frag)
 605 {
 606         struct i802_driver_data *drv = priv;
 607         struct iwreq iwr;
 608
 609         memset(&iwr, 0, sizeof(iwr));
 610         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 611
 612         if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
 613                 perror("ioctl[SIOCGIWFRAG]");
 614                 return -1;
 615         }
 616
 617         *frag = iwr.u.frag.value;
 618
 619         return 0;
 620 }
 621
 622
 623 static int i802_set_retry(void *priv, int short_retry, int long_retry)
 624 {
 625         struct i802_driver_data *drv = priv;
 626         struct iwreq iwr;
 627
 628         memset(&iwr, 0, sizeof(iwr));
 629         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 630
 631         iwr.u.retry.value = short_retry;
 632         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 633         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 634                 perror("ioctl[SIOCSIWRETRY(short)]");
 635                 return -1;
 636         }
 637
 638         iwr.u.retry.value = long_retry;
 639         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 640         if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
 641                 perror("ioctl[SIOCSIWRETRY(long)]");
 642                 return -1;
 643         }
 644
 645         return 0;
 646 }
 647
 648
 649 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
 650 {
 651         struct i802_driver_data *drv = priv;
 652         struct iwreq iwr;
 653
 654         memset(&iwr, 0, sizeof(iwr));
 655         os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
 656
 657         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
 658         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 659                 perror("ioctl[SIOCGIWFRAG(short)]");
 660                 return -1;
 661         }
 662         *short_retry = iwr.u.retry.value;
 663
 664         iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
 665         if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
 666                 perror("ioctl[SIOCGIWFRAG(long)]");
 667                 return -1;
 668         }
 669         *long_retry = iwr.u.retry.value;
 670
 671         return 0;
 672 }
 673
 674
 675 static int i802_flush(void *priv)
 676 {
 677         struct i802_driver_data *drv = priv;
 678         struct nl_msg *msg;
 679
 680         msg = nlmsg_alloc();
 681         if (!msg)
 682                 return -1;
 683
 684         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 685                     0, NL80211_CMD_DEL_STATION, 0);
 686
 687         /*
 688          * XXX: FIX! this needs to flush all VLANs too
 689          */
 690         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 691                     if_nametoindex(drv->iface));
 692
 693         return send_and_recv_msgs(drv, msg, NULL, NULL);
 694  nla_put_failure:
 695         return -ENOBUFS;
 696 }
 697
 698
 699 static int get_sta_handler(struct nl_msg *msg, void *arg)
 700 {
 701         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 702         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 703         struct hostap_sta_driver_data *data = arg;
 704         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
 705         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
 706                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
 707                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
 708                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
 709         };
 710
 711         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 712                   genlmsg_attrlen(gnlh, 0), NULL);
 713
 714         /*
 715          * TODO: validate the interface and mac address!
 716          * Otherwise, there's a race condition as soon as
 717          * the kernel starts sending station notifications.
 718          */
 719
 720         if (!tb[NL80211_ATTR_STA_INFO]) {
 721                 wpa_printf(MSG_DEBUG, "sta stats missing!");
 722                 return NL_SKIP;
 723         }
 724         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
 725                              tb[NL80211_ATTR_STA_INFO],
 726                              stats_policy)) {
 727                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
 728                 return NL_SKIP;
 729         }
 730
 731         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
 732                 data->inactive_msec =
 733                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
 734         if (stats[NL80211_STA_INFO_RX_BYTES])
 735                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
 736         if (stats[NL80211_STA_INFO_TX_BYTES])
 737                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
 738
 739         return NL_SKIP;
 740 }
 741
 742 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
 743                               const u8 *addr)
 744 {
 745         struct i802_driver_data *drv = priv;
 746         struct nl_msg *msg;
 747
 748         msg = nlmsg_alloc();
 749         if (!msg)
 750                 return -ENOMEM;
 751
 752         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 753                     0, NL80211_CMD_GET_STATION, 0);
 754
 755         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 756         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 757
 758         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
 759  nla_put_failure:
 760         return -ENOBUFS;
 761 }
 762
 763
 764 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
 765                            size_t data_len, int encrypt, const u8 *own_addr)
 766 {
 767         struct i802_driver_data *drv = priv;
 768         struct ieee80211_hdr *hdr;
 769         size_t len;
 770         u8 *pos;
 771         int res;
 772 #if 0 /* FIX */
 773         int qos = sta->flags & WLAN_STA_WME;
 774 #else
 775         int qos = 0;
 776 #endif
 777
 778         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
 779                 data_len;
 780         hdr = os_zalloc(len);
 781         if (hdr == NULL) {
 782                 printf("malloc() failed for i802_send_data(len=%lu)\n",
 783                        (unsigned long) len);
 784                 return -1;
 785         }
 786
 787         hdr->frame_control =
 788                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
 789         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
 790         if (encrypt)
 791                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 792 #if 0 /* To be enabled if qos determination is added above */
 793         if (qos) {
 794                 hdr->frame_control |=
 795                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
 796         }
 797 #endif
 798
 799         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
 800         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
 801         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
 802         pos = (u8 *) (hdr + 1);
 803
 804 #if 0 /* To be enabled if qos determination is added above */
 805         if (qos) {
 806                 /* add an empty QoS header if needed */
 807                 pos[0] = 0;
 808                 pos[1] = 0;
 809                 pos += 2;
 810         }
 811 #endif
 812
 813         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
 814         pos += sizeof(rfc1042_header);
 815         WPA_PUT_BE16(pos, ETH_P_PAE);
 816         pos += 2;
 817         memcpy(pos, data, data_len);
 818
 819         res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
 820         free(hdr);
 821
 822         if (res < 0) {
 823                 perror("i802_send_eapol: send");
 824                 printf("i802_send_eapol - packet len: %lu - failed\n",
 825                        (unsigned long) len);
 826         }
 827
 828         return res;
 829 }
 830
 831
 832 static int i802_sta_add2(const char *ifname, void *priv,
 833                          struct hostapd_sta_add_params *params)
 834 {
 835         struct i802_driver_data *drv = priv;
 836         struct nl_msg *msg;
 837         int ret = -ENOBUFS;
 838
 839         msg = nlmsg_alloc();
 840         if (!msg)
 841                 return -ENOMEM;
 842
 843         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 844                     0, NL80211_CMD_NEW_STATION, 0);
 845
 846         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 847                     if_nametoindex(drv->iface));
 848         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
 849         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
 850         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
 851                 params->supp_rates);
 852         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
 853                     params->listen_interval);
 854
 855 #ifdef CONFIG_IEEE80211N
 856 #ifdef NL80211_ATTR_HT_CAPABILITY
 857         if (params->ht_capabilities) {
 858                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
 859                         params->ht_capabilities->length,
 860                         &params->ht_capabilities->data);
 861         }
 862 #endif /* NL80211_ATTR_HT_CAPABILITY */
 863 #endif /* CONFIG_IEEE80211N */
 864
 865         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 866         if (ret == -EEXIST)
 867                 ret = 0;
 868  nla_put_failure:
 869         return ret;
 870 }
 871
 872
 873 static int i802_sta_remove(void *priv, const u8 *addr)
 874 {
 875         struct i802_driver_data *drv = priv;
 876         struct nl_msg *msg;
 877         int ret;
 878
 879         msg = nlmsg_alloc();
 880         if (!msg)
 881                 return -ENOMEM;
 882
 883         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 884                     0, NL80211_CMD_DEL_STATION, 0);
 885
 886         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 887                     if_nametoindex(drv->iface));
 888         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 889
 890         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
 891         if (ret == -ENOENT)
 892                 return 0;
 893         return ret;
 894  nla_put_failure:
 895         return -ENOBUFS;
 896 }
 897
 898
 899 static int i802_sta_set_flags(void *priv, const u8 *addr,
 900                               int total_flags, int flags_or, int flags_and)
 901 {
 902         struct i802_driver_data *drv = priv;
 903         struct nl_msg *msg, *flags = NULL;
 904
 905         msg = nlmsg_alloc();
 906         if (!msg)
 907                 return -ENOMEM;
 908
 909         flags = nlmsg_alloc();
 910         if (!flags) {
 911                 nlmsg_free(msg);
 912                 return -ENOMEM;
 913         }
 914
 915         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 916                     0, NL80211_CMD_SET_STATION, 0);
 917
 918         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
 919                     if_nametoindex(drv->iface));
 920         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
 921
 922         if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
 923                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
 924
 925         if (total_flags & WLAN_STA_WME)
 926                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
 927
 928         if (total_flags & WLAN_STA_SHORT_PREAMBLE)
 929                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
 930
 931 #ifdef NL80211_MFP_PENDING
 932         if (total_flags & WLAN_STA_MFP)
 933                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
 934 #endif /* NL80211_MFP_PENDING */
 935
 936         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
 937                 goto nla_put_failure;
 938
 939         nlmsg_free(flags);
 940
 941         return send_and_recv_msgs(drv, msg, NULL, NULL);
 942  nla_put_failure:
 943         nlmsg_free(flags);
 944         return -ENOBUFS;
 945 }
 946
 947
 948 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
 949 {
 950         return -1;
 951 }
 952
 953
 954 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
 955                                     int cw_min, int cw_max, int burst_time)
 956 {
 957 #ifdef NL80211_ATTR_WIPHY_TXQ_PARAMS
 958         struct i802_driver_data *drv = priv;
 959         struct nl_msg *msg;
 960         struct nlattr *txq, *params;
 961
 962         msg = nlmsg_alloc();
 963         if (!msg)
 964                 return -1;
 965
 966         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 967                     0, NL80211_CMD_SET_WIPHY, 0);
 968
 969         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
 970
 971         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
 972         if (!txq)
 973                 goto nla_put_failure;
 974
 975         /* We are only sending parameters for a single TXQ at a time */
 976         params = nla_nest_start(msg, 1);
 977         if (!params)
 978                 goto nla_put_failure;
 979
 980         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
 981         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
 982          * 32 usec, so need to convert the value here. */
 983         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
 984         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
 985         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
 986         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
 987
 988         nla_nest_end(msg, params);
 989
 990         nla_nest_end(msg, txq);
 991
 992         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
 993                 return 0;
 994  nla_put_failure:
 995         return -1;
 996 #else /* NL80211_ATTR_WIPHY_TXQ_PARAMS */
 997         return -1;
 998 #endif /* NL80211_ATTR_WIPHY_TXQ_PARAMS */
 999 }
1000
1001
1002 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
1003 {
1004         struct nl_msg *msg;
1005
1006         /* stop listening for EAPOL on this interface */
1007         del_ifidx(drv, ifidx);
1008
1009         msg = nlmsg_alloc();
1010         if (!msg)
1011                 goto nla_put_failure;
1012
1013         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1014                     0, NL80211_CMD_DEL_INTERFACE, 0);
1015         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
1016
1017         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
1018                 return;
1019  nla_put_failure:
1020         printf("Failed to remove interface.\n");
1021 }
1022
1023
1024 static int nl80211_create_iface(struct i802_driver_data *drv,
1025                                 const char *ifname,
1026                                 enum nl80211_iftype iftype,
1027                                 const u8 *addr)
1028 {
1029         struct nl_msg *msg, *flags = NULL;
1030         int ifidx;
1031         struct ifreq ifreq;
1032         struct iwreq iwr;
1033         int ret = -ENOBUFS;
1034
1035         msg = nlmsg_alloc();
1036         if (!msg)
1037                 return -1;
1038
1039         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1040                     0, NL80211_CMD_NEW_INTERFACE, 0);
1041         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1042                     if_nametoindex(drv->hapd->conf->iface));
1043         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1044         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1045
1046         if (iftype == NL80211_IFTYPE_MONITOR) {
1047                 int err;
1048
1049                 flags = nlmsg_alloc();
1050                 if (!flags)
1051                         goto nla_put_failure;
1052
1053                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1054
1055                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1056
1057                 nlmsg_free(flags);
1058
1059                 if (err)
1060                         goto nla_put_failure;
1061         }
1062
1063         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1064         if (ret) {
1065  nla_put_failure:
1066                 printf("Failed to create interface %s.\n", ifname);
1067                 return ret;
1068         }
1069
1070         ifidx = if_nametoindex(ifname);
1071
1072         if (ifidx <= 0)
1073                 return -1;
1074
1075         /* start listening for EAPOL on this interface */
1076         add_ifidx(drv, ifidx);
1077
1078         if (addr) {
1079                 switch (iftype) {
1080                 case NL80211_IFTYPE_AP:
1081                         os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1082                         memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1083                         ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1084
1085                         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1086                                 nl80211_remove_iface(drv, ifidx);
1087                                 return -1;
1088                         }
1089                         break;
1090                 case NL80211_IFTYPE_WDS:
1091                         memset(&iwr, 0, sizeof(iwr));
1092                         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1093                         iwr.u.addr.sa_family = ARPHRD_ETHER;
1094                         memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1095                         if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1096                                 return -1;
1097                         break;
1098                 default:
1099                         /* nothing */
1100                         break;
1101                 }
1102         }
1103
1104         return ifidx;
1105 }
1106
1107
1108 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1109 {
1110         int ifidx;
1111
1112         /*
1113          * The kernel supports that when the low-level driver does,
1114          * but we currently don't because we need per-BSS data that
1115          * currently we can't handle easily.
1116          */
1117         return -1;
1118
1119         ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1120         if (ifidx < 0)
1121                 return -1;
1122         if (hostapd_set_iface_flags(priv, ifname, 1)) {
1123                 nl80211_remove_iface(priv, ifidx);
1124                 return -1;
1125         }
1126         return 0;
1127 }
1128
1129
1130 static int i802_bss_remove(void *priv, const char *ifname)
1131 {
1132         nl80211_remove_iface(priv, if_nametoindex(ifname));
1133         return 0;
1134 }
1135
1136
1137 static int i802_set_beacon(const char *iface, void *priv,
1138                            u8 *head, size_t head_len,
1139                            u8 *tail, size_t tail_len)
1140 {
1141         struct i802_driver_data *drv = priv;
1142         struct nl_msg *msg;
1143         u8 cmd = NL80211_CMD_NEW_BEACON;
1144         int ret;
1145
1146         msg = nlmsg_alloc();
1147         if (!msg)
1148                 return -ENOMEM;
1149
1150         if (drv->beacon_set)
1151                 cmd = NL80211_CMD_SET_BEACON;
1152
1153         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1154                     0, cmd, 0);
1155         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1156         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1157         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1158         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1159
1160         if (!drv->dtim_period)
1161                 drv->dtim_period = 2;
1162         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1163
1164         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1165         if (!ret)
1166                 drv->beacon_set = 1;
1167         return ret;
1168  nla_put_failure:
1169         return -ENOBUFS;
1170 }
1171
1172
1173 static int i802_del_beacon(struct i802_driver_data *drv)
1174 {
1175         struct nl_msg *msg;
1176
1177         msg = nlmsg_alloc();
1178         if (!msg)
1179                 return -ENOMEM;
1180
1181         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1182                     0, NL80211_CMD_DEL_BEACON, 0);
1183         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1184
1185         return send_and_recv_msgs(drv, msg, NULL, NULL);
1186  nla_put_failure:
1187         return -ENOBUFS;
1188 }
1189
1190
1191 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1192 {
1193         struct i802_driver_data *drv = priv;
1194
1195         /*
1196          * FIXME: This needs to be per interface (BSS)
1197          */
1198         drv->ieee802_1x_active = enabled;
1199         return 0;
1200 }
1201
1202
1203 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1204 {
1205         struct i802_driver_data *drv = priv;
1206         struct iwreq iwr;
1207
1208         memset(&iwr, 0, sizeof(iwr));
1209
1210         os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1211         iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1212         iwr.u.param.value = enabled;
1213
1214         ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1215
1216         /* ignore errors, the kernel/driver might not care */
1217         return 0;
1218 }
1219
1220
1221 static int i802_set_internal_bridge(void *priv, int value)
1222 {
1223         return -1;
1224 }
1225
1226
1227 static int i802_set_beacon_int(void *priv, int value)
1228 {
1229         struct i802_driver_data *drv = priv;
1230         struct nl_msg *msg;
1231
1232         drv->beacon_int = value;
1233
1234         if (!drv->beacon_set)
1235                 return 0;
1236
1237         msg = nlmsg_alloc();
1238         if (!msg)
1239                 return -ENOMEM;
1240
1241         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1242                     0, NL80211_CMD_SET_BEACON, 0);
1243         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1244
1245         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1246
1247         return send_and_recv_msgs(drv, msg, NULL, NULL);
1248  nla_put_failure:
1249         return -ENOBUFS;
1250 }
1251
1252
1253 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1254 {
1255         struct i802_driver_data *drv = priv;
1256         struct nl_msg *msg;
1257
1258         msg = nlmsg_alloc();
1259         if (!msg)
1260                 return -ENOMEM;
1261
1262         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1263                     0, NL80211_CMD_SET_BEACON, 0);
1264         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1265
1266         drv->dtim_period = value;
1267         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1268
1269         return send_and_recv_msgs(drv, msg, NULL, NULL);
1270  nla_put_failure:
1271         return -ENOBUFS;
1272 }
1273
1274
1275 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1276 {
1277 #ifdef NL80211_CMD_SET_BSS
1278         struct i802_driver_data *drv = priv;
1279         struct nl_msg *msg;
1280
1281         msg = nlmsg_alloc();
1282         if (!msg)
1283                 return -ENOMEM;
1284
1285         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1286                     NL80211_CMD_SET_BSS, 0);
1287
1288         if (cts >= 0)
1289                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1290         if (preamble >= 0)
1291                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1292         if (slot >= 0)
1293                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1294
1295         /* TODO: multi-BSS support */
1296         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1297
1298         return send_and_recv_msgs(drv, msg, NULL, NULL);
1299  nla_put_failure:
1300         return -ENOBUFS;
1301 #else /* NL80211_CMD_SET_BSS */
1302         return -1;
1303 #endif /* NL80211_CMD_SET_BSS */
1304 }
1305
1306
1307 static int i802_set_cts_protect(void *priv, int value)
1308 {
1309         return i802_set_bss(priv, value, -1, -1);
1310 }
1311
1312
1313 static int i802_set_preamble(void *priv, int value)
1314 {
1315         return i802_set_bss(priv, -1, value, -1);
1316 }
1317
1318
1319 static int i802_set_short_slot_time(void *priv, int value)
1320 {
1321         return i802_set_bss(priv, -1, -1, value);
1322 }
1323
1324
1325 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1326 {
1327         switch (type) {
1328         case HOSTAPD_IF_VLAN:
1329                 return NL80211_IFTYPE_AP_VLAN;
1330         case HOSTAPD_IF_WDS:
1331                 return NL80211_IFTYPE_WDS;
1332         }
1333         return -1;
1334 }
1335
1336
1337 static int i802_if_add(const char *iface, void *priv,
1338                        enum hostapd_driver_if_type type, char *ifname,
1339                        const u8 *addr)
1340 {
1341         if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1342                 return -1;
1343         return 0;
1344 }
1345
1346
1347 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1348                           char *ifname, const u8 *addr)
1349 {
1350         /* unused at the moment */
1351         return -1;
1352 }
1353
1354
1355 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1356                           const char *ifname, const u8 *addr)
1357 {
1358         nl80211_remove_iface(priv, if_nametoindex(ifname));
1359         return 0;
1360 }
1361
1362
1363 struct phy_info_arg {
1364         u16 *num_modes;
1365         struct hostapd_hw_modes *modes;
1366 };
1367
1368 static int phy_info_handler(struct nl_msg *msg, void *arg)
1369 {
1370         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1371         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1372         struct phy_info_arg *phy_info = arg;
1373
1374         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1375
1376         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1377         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1378                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1379                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1380                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1381                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1382                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1383 #ifdef NL80211_FREQUENCY_ATTR_MAX_TX_POWER
1384                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1385 #endif /* NL80211_FREQUENCY_ATTR_MAX_TX_POWER */
1386         };
1387
1388         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1389         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1390                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1391                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1392         };
1393
1394         struct nlattr *nl_band;
1395         struct nlattr *nl_freq;
1396         struct nlattr *nl_rate;
1397         int rem_band, rem_freq, rem_rate;
1398         struct hostapd_hw_modes *mode;
1399         int idx, mode_is_set;
1400
1401         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1402                   genlmsg_attrlen(gnlh, 0), NULL);
1403
1404         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1405                 return NL_SKIP;
1406
1407         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1408                 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1409                 if (!mode)
1410                         return NL_SKIP;
1411                 phy_info->modes = mode;
1412
1413                 mode_is_set = 0;
1414
1415                 mode = &phy_info->modes[*(phy_info->num_modes)];
1416                 memset(mode, 0, sizeof(*mode));
1417                 *(phy_info->num_modes) += 1;
1418
1419                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1420                           nla_len(nl_band), NULL);
1421
1422                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1423                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1424                                   nla_len(nl_freq), freq_policy);
1425                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1426                                 continue;
1427                         mode->num_channels++;
1428                 }
1429
1430                 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1431                 if (!mode->channels)
1432                         return NL_SKIP;
1433
1434                 idx = 0;
1435
1436                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1437                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1438                                   nla_len(nl_freq), freq_policy);
1439                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1440                                 continue;
1441
1442                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1443                         mode->channels[idx].flag = 0;
1444
1445                         if (!mode_is_set) {
1446                                 /* crude heuristic */
1447                                 if (mode->channels[idx].freq < 4000)
1448                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
1449                                 else
1450                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
1451                                 mode_is_set = 1;
1452                         }
1453
1454                         /* crude heuristic */
1455                         if (mode->channels[idx].freq < 4000)
1456                                 if (mode->channels[idx].freq == 2848)
1457                                         mode->channels[idx].chan = 14;
1458                                 else
1459                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1460                         else
1461                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1462
1463                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1464                                 mode->channels[idx].flag |=
1465                                         HOSTAPD_CHAN_DISABLED;
1466                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1467                                 mode->channels[idx].flag |=
1468                                         HOSTAPD_CHAN_PASSIVE_SCAN;
1469                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1470                                 mode->channels[idx].flag |=
1471                                         HOSTAPD_CHAN_NO_IBSS;
1472                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1473                                 mode->channels[idx].flag |=
1474                                         HOSTAPD_CHAN_RADAR;
1475
1476 #ifdef NL80211_FREQUENCY_ATTR_MAX_TX_POWER
1477                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1478                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1479                                 mode->channels[idx].max_tx_power =
1480                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1481 #endif /* NL80211_FREQUENCY_ATTR_MAX_TX_POWER */
1482
1483                         idx++;
1484                 }
1485
1486                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1487                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1488                                   nla_len(nl_rate), rate_policy);
1489                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1490                                 continue;
1491                         mode->num_rates++;
1492                 }
1493
1494                 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1495                 if (!mode->rates)
1496                         return NL_SKIP;
1497
1498                 idx = 0;
1499
1500                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1501                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1502                                   nla_len(nl_rate), rate_policy);
1503                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1504                                 continue;
1505                         mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1506
1507                         /* crude heuristic */
1508                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1509                             mode->rates[idx].rate > 200)
1510                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
1511
1512                         if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1513                                 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1514
1515                         idx++;
1516                 }
1517         }
1518
1519         return NL_SKIP;
1520 }
1521
1522 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1523                                              u16 *num_modes)
1524 {
1525         u16 m;
1526         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1527         int i, mode11g_idx = -1;
1528
1529         /* If only 802.11g mode is included, use it to construct matching
1530          * 802.11b mode data. */
1531
1532         for (m = 0; m < *num_modes; m++) {
1533                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1534                         return modes; /* 802.11b already included */
1535                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1536                         mode11g_idx = m;
1537         }
1538
1539         if (mode11g_idx < 0)
1540                 return modes; /* 2.4 GHz band not supported at all */
1541
1542         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1543         if (nmodes == NULL)
1544                 return modes; /* Could not add 802.11b mode */
1545
1546         mode = &nmodes[*num_modes];
1547         os_memset(mode, 0, sizeof(*mode));
1548         (*num_modes)++;
1549         modes = nmodes;
1550
1551         mode->mode = HOSTAPD_MODE_IEEE80211B;
1552
1553         mode11g = &modes[mode11g_idx];
1554         mode->num_channels = mode11g->num_channels;
1555         mode->channels = os_malloc(mode11g->num_channels *
1556                                    sizeof(struct hostapd_channel_data));
1557         if (mode->channels == NULL) {
1558                 (*num_modes)--;
1559                 return modes; /* Could not add 802.11b mode */
1560         }
1561         os_memcpy(mode->channels, mode11g->channels,
1562                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
1563
1564         mode->num_rates = 0;
1565         mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1566         if (mode->rates == NULL) {
1567                 os_free(mode->channels);
1568                 (*num_modes)--;
1569                 return modes; /* Could not add 802.11b mode */
1570         }
1571
1572         for (i = 0; i < mode11g->num_rates; i++) {
1573                 if (mode11g->rates[i].rate > 110 ||
1574                     mode11g->rates[i].flags &
1575                     (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1576                         continue;
1577                 mode->rates[mode->num_rates] = mode11g->rates[i];
1578                 mode->num_rates++;
1579                 if (mode->num_rates == 4)
1580                         break;
1581         }
1582
1583         if (mode->num_rates == 0) {
1584                 os_free(mode->channels);
1585                 os_free(mode->rates);
1586                 (*num_modes)--;
1587                 return modes; /* No 802.11b rates */
1588         }
1589
1590         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1591                    "information");
1592
1593         return modes;
1594 }
1595
1596 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1597                                                          u16 *num_modes,
1598                                                          u16 *flags)
1599 {
1600         struct i802_driver_data *drv = priv;
1601         struct nl_msg *msg;
1602         struct phy_info_arg result = {
1603                 .num_modes = num_modes,
1604                 .modes = NULL,
1605         };
1606
1607         *num_modes = 0;
1608         *flags = 0;
1609
1610         msg = nlmsg_alloc();
1611         if (!msg)
1612                 return NULL;
1613
1614         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1615                     0, NL80211_CMD_GET_WIPHY, 0);
1616
1617         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1618
1619         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1620                 return i802_add_11b(result.modes, num_modes);
1621  nla_put_failure:
1622         return NULL;
1623 }
1624
1625
1626 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1627                              const char *ifname, int vlan_id)
1628 {
1629         struct i802_driver_data *drv = priv;
1630         struct nl_msg *msg;
1631
1632         msg = nlmsg_alloc();
1633         if (!msg)
1634                 return -ENOMEM;
1635
1636         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1637                     0, NL80211_CMD_SET_STATION, 0);
1638
1639         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1640                     if_nametoindex(drv->iface));
1641         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1642         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1643                     if_nametoindex(ifname));
1644
1645         return send_and_recv_msgs(drv, msg, NULL, NULL);
1646  nla_put_failure:
1647         return -ENOBUFS;
1648 }
1649
1650
1651 static int i802_set_country(void *priv, const char *country)
1652 {
1653         struct i802_driver_data *drv = priv;
1654         struct nl_msg *msg;
1655         char alpha2[3];
1656
1657         msg = nlmsg_alloc();
1658         if (!msg)
1659                 return -ENOMEM;
1660
1661         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1662                     0, NL80211_CMD_REQ_SET_REG, 0);
1663
1664         alpha2[0] = country[0];
1665         alpha2[1] = country[1];
1666         alpha2[2] = '\0';
1667         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1668
1669         return send_and_recv_msgs(drv, msg, NULL, NULL);
1670  nla_put_failure:
1671         return -ENOBUFS;
1672 }
1673
1674
1675 static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
1676 {
1677         struct sta_info *sta;
1678
1679         sta = ap_get_sta(hapd, ta);
1680         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1681                 printf("Data/PS-poll frame from not associated STA "
1682                        MACSTR "\n", MAC2STR(ta));
1683                 if (sta && (sta->flags & WLAN_STA_AUTH))
1684                         hostapd_sta_disassoc(
1685                                 hapd, ta,
1686                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1687                 else
1688                         hostapd_sta_deauth(
1689                                 hapd, ta,
1690                                 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1691         }
1692 }
1693
1694
1695 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1696                                int ok)
1697 {
1698         struct ieee80211_hdr *hdr;
1699         u16 fc, type, stype;
1700         struct sta_info *sta;
1701
1702         hdr = (struct ieee80211_hdr *) buf;
1703         fc = le_to_host16(hdr->frame_control);
1704
1705         type = WLAN_FC_GET_TYPE(fc);
1706         stype = WLAN_FC_GET_STYPE(fc);
1707
1708         switch (type) {
1709         case WLAN_FC_TYPE_MGMT:
1710                 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1711                            ok ? "ACK" : "fail");
1712                 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1713                 break;
1714         case WLAN_FC_TYPE_CTRL:
1715                 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1716                            ok ? "ACK" : "fail");
1717                 break;
1718         case WLAN_FC_TYPE_DATA:
1719                 wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
1720                            ok ? "ACK" : "fail");
1721                 sta = ap_get_sta(hapd, hdr->addr1);
1722                 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1723                         wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1724                                    "activity poll", MAC2STR(sta->addr),
1725                                    ok ? "ACKed" : "did not ACK");
1726                         if (ok)
1727                                 sta->flags &= ~WLAN_STA_PENDING_POLL;
1728                 }
1729                 if (sta)
1730                         ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1731                 break;
1732         default:
1733                 printf("unknown TX callback frame type %d\n", type);
1734                 break;
1735         }
1736 }
1737
1738
1739 static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
1740                          struct hostapd_frame_info *hfi,
1741                          enum ieee80211_msg_type msg_type)
1742 {
1743         struct ieee80211_hdr *hdr;
1744         u16 fc, type, stype;
1745         size_t data_len = len;
1746         struct hostapd_data *hapd = NULL;
1747         int broadcast_bssid = 0;
1748         size_t i;
1749         u8 *bssid;
1750
1751         /*
1752          * PS-Poll frames are 16 bytes. All other frames are
1753          * 24 bytes or longer.
1754          */
1755         if (len < 16)
1756                 return;
1757
1758         hdr = (struct ieee80211_hdr *) buf;
1759         fc = le_to_host16(hdr->frame_control);
1760
1761         type = WLAN_FC_GET_TYPE(fc);
1762         stype = WLAN_FC_GET_STYPE(fc);
1763
1764         switch (type) {
1765         case WLAN_FC_TYPE_DATA:
1766                 if (len < 24)
1767                         return;
1768                 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1769                 case WLAN_FC_TODS:
1770                         bssid = hdr->addr1;
1771                         break;
1772                 default:
1773                         /* discard */
1774                         return;
1775                 }
1776                 break;
1777         case WLAN_FC_TYPE_CTRL:
1778                 /* discard non-ps-poll frames */
1779                 if (stype != WLAN_FC_STYPE_PSPOLL)
1780                         return;
1781                 bssid = hdr->addr1;
1782                 break;
1783         case WLAN_FC_TYPE_MGMT:
1784                 bssid = hdr->addr3;
1785                 break;
1786         default:
1787                 /* discard */
1788                 return;
1789         }
1790
1791         /* find interface frame belongs to */
1792         for (i = 0; i < iface->num_bss; i++) {
1793                 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1794                         hapd = iface->bss[i];
1795                         break;
1796                 }
1797         }
1798
1799         if (hapd == NULL) {
1800                 hapd = iface->bss[0];
1801
1802                 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1803                     bssid[2] != 0xff || bssid[3] != 0xff ||
1804                     bssid[4] != 0xff || bssid[5] != 0xff) {
1805                         /*
1806                          * Unknown BSSID - drop frame if this is not from
1807                          * passive scanning or a beacon (at least ProbeReq
1808                          * frames to other APs may be allowed through RX
1809                          * filtering in the wlan hw/driver)
1810                          */
1811                         if ((type != WLAN_FC_TYPE_MGMT ||
1812                              stype != WLAN_FC_STYPE_BEACON))
1813                                 return;
1814                 } else
1815                         broadcast_bssid = 1;
1816         }
1817
1818         switch (msg_type) {
1819         case ieee80211_msg_normal:
1820                 /* continue processing */
1821                 break;
1822         case ieee80211_msg_tx_callback_ack:
1823                 handle_tx_callback(hapd, buf, data_len, 1);
1824                 return;
1825         case ieee80211_msg_tx_callback_fail:
1826                 handle_tx_callback(hapd, buf, data_len, 0);
1827                 return;
1828         }
1829
1830         switch (type) {
1831         case WLAN_FC_TYPE_MGMT:
1832                 if (stype != WLAN_FC_STYPE_BEACON &&
1833                     stype != WLAN_FC_STYPE_PROBE_REQ)
1834                         wpa_printf(MSG_MSGDUMP, "MGMT");
1835                 if (broadcast_bssid) {
1836                         for (i = 0; i < iface->num_bss; i++)
1837                                 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1838                                                 stype, hfi);
1839                 } else
1840                         ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1841                 break;
1842         case WLAN_FC_TYPE_CTRL:
1843                 /* can only get here with PS-Poll frames */
1844                 wpa_printf(MSG_DEBUG, "CTRL");
1845                 handle_unknown_sta(hapd, hdr->addr2);
1846                 break;
1847         case WLAN_FC_TYPE_DATA:
1848                 wpa_printf(MSG_DEBUG, "DATA");
1849                 handle_unknown_sta(hapd, hdr->addr2);
1850                 break;
1851         }
1852 }
1853
1854
1855 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1856 {
1857         struct i802_driver_data *drv = eloop_ctx;
1858         struct hostapd_data *hapd = drv->hapd;
1859         struct sockaddr_ll lladdr;
1860         unsigned char buf[3000];
1861         int len;
1862         socklen_t fromlen = sizeof(lladdr);
1863
1864         len = recvfrom(sock, buf, sizeof(buf), 0,
1865                        (struct sockaddr *)&lladdr, &fromlen);
1866         if (len < 0) {
1867                 perror("recv");
1868                 return;
1869         }
1870
1871         if (have_ifidx(drv, lladdr.sll_ifindex))
1872                 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1873 }
1874
1875
1876 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1877 {
1878         struct i802_driver_data *drv = eloop_ctx;
1879         int len;
1880         unsigned char buf[3000];
1881         struct hostapd_data *hapd = drv->hapd;
1882         struct ieee80211_radiotap_iterator iter;
1883         int ret;
1884         struct hostapd_frame_info hfi;
1885         int injected = 0, failed = 0, msg_type, rxflags = 0;
1886
1887         len = recv(sock, buf, sizeof(buf), 0);
1888         if (len < 0) {
1889                 perror("recv");
1890                 return;
1891         }
1892
1893         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1894                 printf("received invalid radiotap frame\n");
1895                 return;
1896         }
1897
1898         memset(&hfi, 0, sizeof(hfi));
1899
1900         while (1) {
1901                 ret = ieee80211_radiotap_iterator_next(&iter);
1902                 if (ret == -ENOENT)
1903                         break;
1904                 if (ret) {
1905                         printf("received invalid radiotap frame (%d)\n", ret);
1906                         return;
1907                 }
1908                 switch (iter.this_arg_index) {
1909                 case IEEE80211_RADIOTAP_FLAGS:
1910                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1911                                 len -= 4;
1912                         break;
1913                 case IEEE80211_RADIOTAP_RX_FLAGS:
1914                         rxflags = 1;
1915                         break;
1916                 case IEEE80211_RADIOTAP_TX_FLAGS:
1917                         injected = 1;
1918                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1919                                         IEEE80211_RADIOTAP_F_TX_FAIL;
1920                         break;
1921                 case IEEE80211_RADIOTAP_DATA_RETRIES:
1922                         break;
1923                 case IEEE80211_RADIOTAP_CHANNEL:
1924                         /* TODO convert from freq/flags to channel number
1925                         hfi.channel = XXX;
1926                         hfi.phytype = XXX;
1927                          */
1928                         break;
1929                 case IEEE80211_RADIOTAP_RATE:
1930                         hfi.datarate = *iter.this_arg * 5;
1931                         break;
1932                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1933                         hfi.ssi_signal = *iter.this_arg;
1934                         break;
1935                 }
1936         }
1937
1938         if (rxflags && injected)
1939                 return;
1940
1941         if (!injected)
1942                 msg_type = ieee80211_msg_normal;
1943         else if (failed)
1944                 msg_type = ieee80211_msg_tx_callback_fail;
1945         else
1946                 msg_type = ieee80211_msg_tx_callback_ack;
1947
1948         handle_frame(hapd->iface, buf + iter.max_length,
1949                      len - iter.max_length, &hfi, msg_type);
1950 }
1951
1952
1953 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
1954 {
1955         char buf[IFNAMSIZ];
1956         struct sockaddr_ll ll;
1957         int optval;
1958         socklen_t optlen;
1959
1960         snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
1961         buf[IFNAMSIZ - 1] = '\0';
1962
1963         drv->monitor_ifidx =
1964                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
1965
1966         if (drv->monitor_ifidx < 0)
1967                 return -1;
1968
1969         if (hostapd_set_iface_flags(drv, buf, 1))
1970                 goto error;
1971
1972         memset(&ll, 0, sizeof(ll));
1973         ll.sll_family = AF_PACKET;
1974         ll.sll_ifindex = drv->monitor_ifidx;
1975         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
1976         if (drv->monitor_sock < 0) {
1977                 perror("socket[PF_PACKET,SOCK_RAW]");
1978                 goto error;
1979         }
1980
1981         if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
1982                  sizeof(ll)) < 0) {
1983                 perror("monitor socket bind");
1984                 goto error;
1985         }
1986
1987         optlen = sizeof(optval);
1988         optval = 20;
1989         if (setsockopt
1990             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
1991                 perror("Failed to set socket priority");
1992                 goto error;
1993         }
1994
1995         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
1996                                      drv, NULL)) {
1997                 printf("Could not register monitor read socket\n");
1998                 goto error;
1999         }
2000
2001         return 0;
2002  error:
2003         nl80211_remove_iface(drv, drv->monitor_ifidx);
2004         return -1;
2005 }
2006
2007
2008 static int nl80211_set_master_mode(struct i802_driver_data *drv,
2009                                    const char *ifname)
2010 {
2011         struct nl_msg *msg;
2012         int ret = -ENOBUFS;
2013
2014         msg = nlmsg_alloc();
2015         if (!msg)
2016                 return -ENOMEM;
2017
2018         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2019                     0, NL80211_CMD_SET_INTERFACE, 0);
2020         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2021                     if_nametoindex(ifname));
2022         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
2023
2024         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2025         if (!ret)
2026                 return 0;
2027  nla_put_failure:
2028         wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
2029                    "mode.", ifname);
2030         return ret;
2031 }
2032
2033
2034 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
2035 {
2036         struct ifreq ifr;
2037         struct sockaddr_ll addr;
2038
2039         drv->ioctl_sock = -1;
2040
2041         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2042         if (drv->ioctl_sock < 0) {
2043                 perror("socket[PF_INET,SOCK_DGRAM]");
2044                 return -1;
2045         }
2046
2047         /* start listening for EAPOL on the default AP interface */
2048         add_ifidx(drv, if_nametoindex(drv->iface));
2049
2050         if (hostapd_set_iface_flags(drv, drv->iface, 0))
2051                 return -1;
2052
2053         if (bssid) {
2054                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2055                 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2056                 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2057
2058                 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2059                         perror("ioctl(SIOCSIFHWADDR)");
2060                         return -1;
2061                 }
2062         }
2063
2064         /*
2065          * initialise generic netlink and nl80211
2066          */
2067         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2068         if (!drv->nl_cb) {
2069                 printf("Failed to allocate netlink callbacks.\n");
2070                 return -1;
2071         }
2072
2073         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2074         if (!drv->nl_handle) {
2075                 printf("Failed to allocate netlink handle.\n");
2076                 return -1;
2077         }
2078
2079         if (genl_connect(drv->nl_handle)) {
2080                 printf("Failed to connect to generic netlink.\n");
2081                 return -1;
2082         }
2083
2084         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2085         if (!drv->nl_cache) {
2086                 printf("Failed to allocate generic netlink cache.\n");
2087                 return -1;
2088         }
2089
2090         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2091         if (!drv->nl80211) {
2092                 printf("nl80211 not found.\n");
2093                 return -1;
2094         }
2095
2096         /* Initialise a monitor interface */
2097         if (nl80211_create_monitor_interface(drv))
2098                 return -1;
2099
2100         if (nl80211_set_master_mode(drv, drv->iface))
2101                 goto fail1;
2102
2103         if (hostapd_set_iface_flags(drv, drv->iface, 1))
2104                 goto fail1;
2105
2106         memset(&addr, 0, sizeof(addr));
2107         addr.sll_family = AF_PACKET;
2108         addr.sll_ifindex = ifr.ifr_ifindex;
2109         wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2110                    addr.sll_ifindex);
2111
2112         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2113         if (drv->eapol_sock < 0) {
2114                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2115                 goto fail1;
2116         }
2117
2118         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2119         {
2120                 printf("Could not register read socket for eapol\n");
2121                 return -1;
2122         }
2123
2124         memset(&ifr, 0, sizeof(ifr));
2125         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2126         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2127                 perror("ioctl(SIOCGIFHWADDR)");
2128                 goto fail1;
2129         }
2130
2131         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2132                 printf("Invalid HW-addr family 0x%04x\n",
2133                        ifr.ifr_hwaddr.sa_family);
2134                 goto fail1;
2135         }
2136         memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2137
2138         return 0;
2139
2140 fail1:
2141         nl80211_remove_iface(drv, drv->monitor_ifidx);
2142         return -1;
2143 }
2144
2145
2146 static int i802_get_inact_sec(void *priv, const u8 *addr)
2147 {
2148         struct hostap_sta_driver_data data;
2149         int ret;
2150
2151         data.inactive_msec = (unsigned long) -1;
2152         ret = i802_read_sta_data(priv, &data, addr);
2153         if (ret || data.inactive_msec == (unsigned long) -1)
2154                 return -1;
2155         return data.inactive_msec / 1000;
2156 }
2157
2158
2159 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2160 {
2161 #if 0
2162         /* TODO */
2163 #endif
2164         return 0;
2165 }
2166
2167
2168 static void
2169 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2170                                        char *custom)
2171 {
2172         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2173
2174         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2175                 char *pos;
2176                 u8 addr[ETH_ALEN];
2177                 pos = strstr(custom, "addr=");
2178                 if (pos == NULL) {
2179                         wpa_printf(MSG_DEBUG,
2180                                    "MLME-MICHAELMICFAILURE.indication "
2181                                    "without sender address ignored");
2182                         return;
2183                 }
2184                 pos += 5;
2185                 if (hwaddr_aton(pos, addr) == 0) {
2186                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2187                 } else {
2188                         wpa_printf(MSG_DEBUG,
2189                                    "MLME-MICHAELMICFAILURE.indication "
2190                                    "with invalid MAC address");
2191                 }
2192         }
2193 }
2194
2195
2196 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2197                                             char *data, int len)
2198 {
2199         struct iw_event iwe_buf, *iwe = &iwe_buf;
2200         char *pos, *end, *custom, *buf;
2201
2202         pos = data;
2203         end = data + len;
2204
2205         while (pos + IW_EV_LCP_LEN <= end) {
2206                 /* Event data may be unaligned, so make a local, aligned copy
2207                  * before processing. */
2208                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2209                 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2210                            iwe->cmd, iwe->len);
2211                 if (iwe->len <= IW_EV_LCP_LEN)
2212                         return;
2213
2214                 custom = pos + IW_EV_POINT_LEN;
2215                 if (drv->we_version > 18 &&
2216                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
2217                      iwe->cmd == IWEVCUSTOM)) {
2218                         /* WE-19 removed the pointer from struct iw_point */
2219                         char *dpos = (char *) &iwe_buf.u.data.length;
2220                         int dlen = dpos - (char *) &iwe_buf;
2221                         memcpy(dpos, pos + IW_EV_LCP_LEN,
2222                                sizeof(struct iw_event) - dlen);
2223                 } else {
2224                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2225                         custom += IW_EV_POINT_OFF;
2226                 }
2227
2228                 switch (iwe->cmd) {
2229                 case IWEVCUSTOM:
2230                         if (custom + iwe->u.data.length > end)
2231                                 return;
2232                         buf = malloc(iwe->u.data.length + 1);
2233                         if (buf == NULL)
2234                                 return;
2235                         memcpy(buf, custom, iwe->u.data.length);
2236                         buf[iwe->u.data.length] = '\0';
2237                         hostapd_wireless_event_wireless_custom(drv, buf);
2238                         free(buf);
2239                         break;
2240                 }
2241
2242                 pos += iwe->len;
2243         }
2244 }
2245
2246
2247 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2248                                                struct nlmsghdr *h, int len)
2249 {
2250         struct ifinfomsg *ifi;
2251         int attrlen, nlmsg_len, rta_len;
2252         struct rtattr *attr;
2253
2254         if (len < (int) sizeof(*ifi))
2255                 return;
2256
2257         ifi = NLMSG_DATA(h);
2258
2259         /* TODO: use ifi->ifi_index to filter out wireless events from other
2260          * interfaces */
2261
2262         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2263
2264         attrlen = h->nlmsg_len - nlmsg_len;
2265         if (attrlen < 0)
2266                 return;
2267
2268         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
2269
2270         rta_len = RTA_ALIGN(sizeof(struct rtattr));
2271         while (RTA_OK(attr, attrlen)) {
2272                 if (attr->rta_type == IFLA_WIRELESS) {
2273                         hostapd_wireless_event_wireless(
2274                                 drv, ((char *) attr) + rta_len,
2275                                 attr->rta_len - rta_len);
2276                 }
2277                 attr = RTA_NEXT(attr, attrlen);
2278         }
2279 }
2280
2281
2282 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2283                                            void *sock_ctx)
2284 {
2285         char buf[256];
2286         int left;
2287         struct sockaddr_nl from;
2288         socklen_t fromlen;
2289         struct nlmsghdr *h;
2290         struct i802_driver_data *drv = eloop_ctx;
2291
2292         fromlen = sizeof(from);
2293         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2294                         (struct sockaddr *) &from, &fromlen);
2295         if (left < 0) {
2296                 if (errno != EINTR && errno != EAGAIN)
2297                         perror("recvfrom(netlink)");
2298                 return;
2299         }
2300
2301         h = (struct nlmsghdr *) buf;
2302         while (left >= (int) sizeof(*h)) {
2303                 int len, plen;
2304
2305                 len = h->nlmsg_len;
2306                 plen = len - sizeof(*h);
2307                 if (len > left || plen < 0) {
2308                         printf("Malformed netlink message: "
2309                                "len=%d left=%d plen=%d\n",
2310                                len, left, plen);
2311                         break;
2312                 }
2313
2314                 switch (h->nlmsg_type) {
2315                 case RTM_NEWLINK:
2316                         hostapd_wireless_event_rtm_newlink(drv, h, plen);
2317                         break;
2318                 }
2319
2320                 len = NLMSG_ALIGN(len);
2321                 left -= len;
2322                 h = (struct nlmsghdr *) ((char *) h + len);
2323         }
2324
2325         if (left > 0) {
2326                 printf("%d extra bytes in the end of netlink message\n", left);
2327         }
2328 }
2329
2330
2331 static int hostap_get_we_version(struct i802_driver_data *drv)
2332 {
2333         struct iw_range *range;
2334         struct iwreq iwr;
2335         int minlen;
2336         size_t buflen;
2337
2338         drv->we_version = 0;
2339
2340         /*
2341          * Use larger buffer than struct iw_range in order to allow the
2342          * structure to grow in the future.
2343          */
2344         buflen = sizeof(struct iw_range) + 500;
2345         range = os_zalloc(buflen);
2346         if (range == NULL)
2347                 return -1;
2348
2349         memset(&iwr, 0, sizeof(iwr));
2350         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2351         iwr.u.data.pointer = (caddr_t) range;
2352         iwr.u.data.length = buflen;
2353
2354         minlen = ((char *) &range->enc_capa) - (char *) range +
2355                 sizeof(range->enc_capa);
2356
2357         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2358                 perror("ioctl[SIOCGIWRANGE]");
2359                 free(range);
2360                 return -1;
2361         } else if (iwr.u.data.length >= minlen &&
2362                    range->we_version_compiled >= 18) {
2363                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2364                            "WE(source)=%d enc_capa=0x%x",
2365                            range->we_version_compiled,
2366                            range->we_version_source,
2367                            range->enc_capa);
2368                 drv->we_version = range->we_version_compiled;
2369         }
2370
2371         free(range);
2372         return 0;
2373 }
2374
2375
2376 static int i802_wireless_event_init(void *priv)
2377 {
2378         struct i802_driver_data *drv = priv;
2379         int s;
2380         struct sockaddr_nl local;
2381
2382         hostap_get_we_version(drv);
2383
2384         drv->wext_sock = -1;
2385
2386         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2387         if (s < 0) {
2388                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2389                 return -1;
2390         }
2391
2392         memset(&local, 0, sizeof(local));
2393         local.nl_family = AF_NETLINK;
2394         local.nl_groups = RTMGRP_LINK;
2395         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2396                 perror("bind(netlink)");
2397                 close(s);
2398                 return -1;
2399         }
2400
2401         eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2402                                  NULL);
2403         drv->wext_sock = s;
2404
2405         return 0;
2406 }
2407
2408
2409 static void i802_wireless_event_deinit(void *priv)
2410 {
2411         struct i802_driver_data *drv = priv;
2412         if (drv->wext_sock < 0)
2413                 return;
2414         eloop_unregister_read_sock(drv->wext_sock);
2415         close(drv->wext_sock);
2416 }
2417
2418
2419 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2420 {
2421         struct i802_driver_data *drv = priv;
2422         struct ieee80211_mgmt mgmt;
2423
2424         memset(&mgmt, 0, sizeof(mgmt));
2425         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2426                                           WLAN_FC_STYPE_DEAUTH);
2427         memcpy(mgmt.da, addr, ETH_ALEN);
2428         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2429         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2430         mgmt.u.deauth.reason_code = host_to_le16(reason);
2431         return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2432                                       sizeof(mgmt.u.deauth), 0);
2433 }
2434
2435
2436 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2437 {
2438         struct i802_driver_data *drv = priv;
2439         struct ieee80211_mgmt mgmt;
2440
2441         memset(&mgmt, 0, sizeof(mgmt));
2442         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2443                                           WLAN_FC_STYPE_DISASSOC);
2444         memcpy(mgmt.da, addr, ETH_ALEN);
2445         memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2446         memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2447         mgmt.u.disassoc.reason_code = host_to_le16(reason);
2448         return  i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2449                                        sizeof(mgmt.u.disassoc), 0);
2450 }
2451
2452
2453 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2454 {
2455         struct i802_driver_data *drv;
2456
2457         drv = os_zalloc(sizeof(struct i802_driver_data));
2458         if (drv == NULL) {
2459                 printf("Could not allocate memory for i802 driver data\n");
2460                 return NULL;
2461         }
2462
2463         drv->hapd = hapd;
2464         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2465
2466         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2467         drv->if_indices = drv->default_if_indices;
2468         drv->bridge = if_nametoindex(hapd->conf->bridge);
2469
2470         if (i802_init_sockets(drv, bssid))
2471                 goto failed;
2472
2473         return drv;
2474
2475 failed:
2476         free(drv);
2477         return NULL;
2478 }
2479
2480
2481 static void *i802_init(struct hostapd_data *hapd)
2482 {
2483         return i802_init_bssid(hapd, NULL);
2484 }
2485
2486
2487 static void i802_deinit(void *priv)
2488 {
2489         struct i802_driver_data *drv = priv;
2490
2491         if (drv->last_freq_ht) {
2492                 /* Clear HT flags from the driver */
2493                 struct hostapd_freq_params freq;
2494                 os_memset(&freq, 0, sizeof(freq));
2495                 freq.freq = drv->last_freq;
2496                 i802_set_freq2(priv, &freq);
2497         }
2498
2499         i802_del_beacon(drv);
2500
2501         /* remove monitor interface */
2502         nl80211_remove_iface(drv, drv->monitor_ifidx);
2503
2504         (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2505
2506         if (drv->monitor_sock >= 0) {
2507                 eloop_unregister_read_sock(drv->monitor_sock);
2508                 close(drv->monitor_sock);
2509         }
2510         if (drv->ioctl_sock >= 0)
2511                 close(drv->ioctl_sock);
2512         if (drv->eapol_sock >= 0) {
2513                 eloop_unregister_read_sock(drv->eapol_sock);
2514                 close(drv->eapol_sock);
2515         }
2516
2517         genl_family_put(drv->nl80211);
2518         nl_cache_free(drv->nl_cache);
2519         nl_handle_destroy(drv->nl_handle);
2520         nl_cb_put(drv->nl_cb);
2521
2522         if (drv->if_indices != drv->default_if_indices)
2523                 free(drv->if_indices);
2524
2525         free(drv);
2526 }
2527
2528
2529 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2530         .name = "nl80211",
2531         .init = i802_init,
2532         .init_bssid = i802_init_bssid,
2533         .deinit = i802_deinit,
2534         .wireless_event_init = i802_wireless_event_init,
2535         .wireless_event_deinit = i802_wireless_event_deinit,
2536         .set_ieee8021x = i802_set_ieee8021x,
2537         .set_privacy = i802_set_privacy,
2538         .set_encryption = i802_set_encryption,
2539         .get_seqnum = i802_get_seqnum,
2540         .flush = i802_flush,
2541         .read_sta_data = i802_read_sta_data,
2542         .send_eapol = i802_send_eapol,
2543         .sta_set_flags = i802_sta_set_flags,
2544         .sta_deauth = i802_sta_deauth,
2545         .sta_disassoc = i802_sta_disassoc,
2546         .sta_remove = i802_sta_remove,
2547         .send_mgmt_frame = i802_send_mgmt_frame,
2548         .sta_add2 = i802_sta_add2,
2549         .get_inact_sec = i802_get_inact_sec,
2550         .sta_clear_stats = i802_sta_clear_stats,
2551         .set_freq2 = i802_set_freq2,
2552         .set_rts = i802_set_rts,
2553         .get_rts = i802_get_rts,
2554         .set_frag = i802_set_frag,
2555         .get_frag = i802_get_frag,
2556         .set_retry = i802_set_retry,
2557         .get_retry = i802_get_retry,
2558         .set_rate_sets = i802_set_rate_sets,
2559         .set_regulatory_domain = i802_set_regulatory_domain,
2560         .set_beacon = i802_set_beacon,
2561         .set_internal_bridge = i802_set_internal_bridge,
2562         .set_beacon_int = i802_set_beacon_int,
2563         .set_dtim_period = i802_set_dtim_period,
2564         .set_cts_protect = i802_set_cts_protect,
2565         .set_preamble = i802_set_preamble,
2566         .set_short_slot_time = i802_set_short_slot_time,
2567         .set_tx_queue_params = i802_set_tx_queue_params,
2568         .bss_add = i802_bss_add,
2569         .bss_remove = i802_bss_remove,
2570         .if_add = i802_if_add,
2571         .if_update = i802_if_update,
2572         .if_remove = i802_if_remove,
2573         .get_hw_feature_data = i802_get_hw_feature_data,
2574         .set_sta_vlan = i802_set_sta_vlan,
2575         .set_country = i802_set_country,
2576 };