src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2010, 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  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * Alternatively, this software may be distributed under the terms of BSD
  14  * license.
  15  *
  16  * See README and COPYING for more details.
  17  */
  18
  19 #include "includes.h"
  20 #include <sys/ioctl.h>
  21 #include <sys/types.h>
  22 #include <sys/stat.h>
  23 #include <fcntl.h>
  24 #include <net/if.h>
  25 #include <netlink/genl/genl.h>
  26 #include <netlink/genl/family.h>
  27 #include <netlink/genl/ctrl.h>
  28 #include <linux/rtnetlink.h>
  29 #include <netpacket/packet.h>
  30 #include <linux/filter.h>
  31 #include "nl80211_copy.h"
  32
  33 #include "common.h"
  34 #include "eloop.h"
  35 #include "utils/list.h"
  36 #include "common/ieee802_11_defs.h"
  37 #include "common/ieee802_11_common.h"
  38 #include "l2_packet/l2_packet.h"
  39 #include "netlink.h"
  40 #include "linux_ioctl.h"
  41 #include "radiotap.h"
  42 #include "radiotap_iter.h"
  43 #include "rfkill.h"
  44 #include "driver.h"
  45
  46 #ifdef CONFIG_LIBNL20
  47 /* libnl 2.0 compatibility code */
  48 #define nl_handle nl_sock
  49 #define nl80211_handle_alloc nl_socket_alloc_cb
  50 #define nl80211_handle_destroy nl_socket_free
  51 #else
  52 /*
  53  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  54  * but when you free a socket again it will mess up its bitmap and
  55  * and use the wrong number the next time it needs a socket ID.
  56  * Therefore, we wrap the handle alloc/destroy and add our own pid
  57  * accounting.
  58  */
  59 static uint32_t port_bitmap[32] = { 0 };
  60
  61 static struct nl_handle *nl80211_handle_alloc(void *cb)
  62 {
  63         struct nl_handle *handle;
  64         uint32_t pid = getpid() & 0x3FFFFF;
  65         int i;
  66
  67         handle = nl_handle_alloc_cb(cb);
  68
  69         for (i = 0; i < 1024; i++) {
  70                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  71                         continue;
  72                 port_bitmap[i / 32] |= 1 << (i % 32);
  73                 pid += i << 22;
  74                 break;
  75         }
  76
  77         nl_socket_set_local_port(handle, pid);
  78
  79         return handle;
  80 }
  81
  82 static void nl80211_handle_destroy(struct nl_handle *handle)
  83 {
  84         uint32_t port = nl_socket_get_local_port(handle);
  85
  86         port >>= 22;
  87         port_bitmap[port / 32] &= ~(1 << (port % 32));
  88
  89         nl_handle_destroy(handle);
  90 }
  91
  92 static inline int __genl_ctrl_alloc_cache(struct nl_handle *h,
  93                                           struct nl_cache **cache)
  94 {
  95         struct nl_cache *tmp = genl_ctrl_alloc_cache(h);
  96         if (!tmp)
  97                 return -ENOMEM;
  98         *cache = tmp;
  99         return 0;
 100 }
 101 #define genl_ctrl_alloc_cache __genl_ctrl_alloc_cache
 102 #endif /* CONFIG_LIBNL20 */
 103
 104
 105 struct nl80211_handles {
 106         struct nl_handle *handle;
 107         struct nl_cache *cache;
 108 };
 109
 110
 111 static int nl_create_handles(struct nl80211_handles *handles, struct nl_cb *cb,
 112                              const char *dbg)
 113 {
 114         if (!handles)
 115                 return -1;
 116
 117         handles->handle = nl80211_handle_alloc(cb);
 118         if (handles->handle == NULL) {
 119                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 120                            "callbacks (%s)", dbg);
 121                 return -1;
 122         }
 123
 124         if (genl_connect(handles->handle)) {
 125                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 126                            "netlink (%s)", dbg);
 127                 goto err;
 128         }
 129
 130         if (genl_ctrl_alloc_cache(handles->handle, &handles->cache) < 0) {
 131                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
 132                            "netlink cache (%s)", dbg);
 133                 goto err;
 134         }
 135
 136         return 0;
 137 err:
 138         nl80211_handle_destroy(handles->handle);
 139         return -1;
 140 }
 141
 142
 143 static void nl_destroy_handles(struct nl80211_handles *handles)
 144 {
 145         if (handles->handle == NULL)
 146                 return;
 147         nl_cache_free(handles->cache);
 148         nl80211_handle_destroy(handles->handle);
 149         handles->handle = NULL;
 150 }
 151
 152
 153 #ifndef IFF_LOWER_UP
 154 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
 155 #endif
 156 #ifndef IFF_DORMANT
 157 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
 158 #endif
 159
 160 #ifndef IF_OPER_DORMANT
 161 #define IF_OPER_DORMANT 5
 162 #endif
 163 #ifndef IF_OPER_UP
 164 #define IF_OPER_UP 6
 165 #endif
 166
 167 struct nl80211_global {
 168         struct dl_list interfaces;
 169         int if_add_ifindex;
 170         struct netlink_data *netlink;
 171         struct nl_cb *nl_cb;
 172         struct nl80211_handles nl;
 173         struct genl_family *nl80211;
 174         int ioctl_sock; /* socket for ioctl() use */
 175 };
 176
 177 static void nl80211_global_deinit(void *priv);
 178 static void wpa_driver_nl80211_deinit(void *priv);
 179
 180 struct i802_bss {
 181         struct wpa_driver_nl80211_data *drv;
 182         struct i802_bss *next;
 183         int ifindex;
 184         char ifname[IFNAMSIZ + 1];
 185         char brname[IFNAMSIZ];
 186         unsigned int beacon_set:1;
 187         unsigned int added_if_into_bridge:1;
 188         unsigned int added_bridge:1;
 189 };
 190
 191 struct wpa_driver_nl80211_data {
 192         struct nl80211_global *global;
 193         struct dl_list list;
 194         u8 addr[ETH_ALEN];
 195         char phyname[32];
 196         void *ctx;
 197         int ifindex;
 198         int if_removed;
 199         int if_disabled;
 200         int ignore_if_down_event;
 201         struct rfkill_data *rfkill;
 202         struct wpa_driver_capa capa;
 203         int has_capability;
 204
 205         int operstate;
 206
 207         int scan_complete_events;
 208
 209         struct nl80211_handles nl_event, nl_preq;
 210
 211         u8 auth_bssid[ETH_ALEN];
 212         u8 bssid[ETH_ALEN];
 213         int associated;
 214         u8 ssid[32];
 215         size_t ssid_len;
 216         enum nl80211_iftype nlmode;
 217         enum nl80211_iftype ap_scan_as_station;
 218         unsigned int assoc_freq;
 219
 220         int monitor_sock;
 221         int monitor_ifidx;
 222         int no_monitor_iface_capab;
 223         int disable_11b_rates;
 224
 225         unsigned int pending_remain_on_chan:1;
 226         unsigned int in_interface_list:1;
 227
 228         u64 remain_on_chan_cookie;
 229         u64 send_action_cookie;
 230
 231         unsigned int last_mgmt_freq;
 232         unsigned int ap_oper_freq;
 233
 234         struct wpa_driver_scan_filter *filter_ssids;
 235         size_t num_filter_ssids;
 236
 237         struct i802_bss first_bss;
 238
 239 #ifdef CONFIG_AP
 240         struct l2_packet_data *l2;
 241 #endif /* CONFIG_AP */
 242
 243 #ifdef HOSTAPD
 244         int eapol_sock; /* socket for EAPOL frames */
 245
 246         int default_if_indices[16];
 247         int *if_indices;
 248         int num_if_indices;
 249
 250         int last_freq;
 251         int last_freq_ht;
 252 #endif /* HOSTAPD */
 253 };
 254
 255
 256 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 257                                             void *timeout_ctx);
 258 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
 259                                        enum nl80211_iftype nlmode);
 260 static int
 261 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 262 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 263                                    const u8 *addr, int cmd, u16 reason_code,
 264                                    int local_state_change);
 265 static void nl80211_remove_monitor_interface(
 266         struct wpa_driver_nl80211_data *drv);
 267 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
 268                                   unsigned int freq, unsigned int wait,
 269                                   const u8 *buf, size_t buf_len, u64 *cookie,
 270                                   int no_cck);
 271 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
 272
 273 #ifdef HOSTAPD
 274 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 275 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 276 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 277 static int wpa_driver_nl80211_if_remove(void *priv,
 278                                         enum wpa_driver_if_type type,
 279                                         const char *ifname);
 280 #else /* HOSTAPD */
 281 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 282 {
 283 }
 284
 285 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 286 {
 287 }
 288
 289 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 290 {
 291         return 0;
 292 }
 293 #endif /* HOSTAPD */
 294
 295 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 296 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 297                                      int ifindex, int disabled);
 298
 299 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
 300
 301
 302 static int is_ap_interface(enum nl80211_iftype nlmode)
 303 {
 304         return (nlmode == NL80211_IFTYPE_AP ||
 305                 nlmode == NL80211_IFTYPE_P2P_GO);
 306 }
 307
 308
 309 static int is_sta_interface(enum nl80211_iftype nlmode)
 310 {
 311         return (nlmode == NL80211_IFTYPE_STATION ||
 312                 nlmode == NL80211_IFTYPE_P2P_CLIENT);
 313 }
 314
 315
 316 struct nl80211_bss_info_arg {
 317         struct wpa_driver_nl80211_data *drv;
 318         struct wpa_scan_results *res;
 319         unsigned int assoc_freq;
 320         u8 assoc_bssid[ETH_ALEN];
 321 };
 322
 323 static int bss_info_handler(struct nl_msg *msg, void *arg);
 324
 325
 326 /* nl80211 code */
 327 static int ack_handler(struct nl_msg *msg, void *arg)
 328 {
 329         int *err = arg;
 330         *err = 0;
 331         return NL_STOP;
 332 }
 333
 334 static int finish_handler(struct nl_msg *msg, void *arg)
 335 {
 336         int *ret = arg;
 337         *ret = 0;
 338         return NL_SKIP;
 339 }
 340
 341 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 342                          void *arg)
 343 {
 344         int *ret = arg;
 345         *ret = err->error;
 346         return NL_SKIP;
 347 }
 348
 349
 350 static int no_seq_check(struct nl_msg *msg, void *arg)
 351 {
 352         return NL_OK;
 353 }
 354
 355
 356 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
 357                          struct nl_handle *nl_handle, struct nl_msg *msg,
 358                          int (*valid_handler)(struct nl_msg *, void *),
 359                          void *valid_data)
 360 {
 361         struct nl_cb *cb;
 362         int err = -ENOMEM;
 363
 364         cb = nl_cb_clone(drv->global->nl_cb);
 365         if (!cb)
 366                 goto out;
 367
 368         err = nl_send_auto_complete(nl_handle, msg);
 369         if (err < 0)
 370                 goto out;
 371
 372         err = 1;
 373
 374         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 375         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 376         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 377
 378         if (valid_handler)
 379                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 380                           valid_handler, valid_data);
 381
 382         while (err > 0)
 383                 nl_recvmsgs(nl_handle, cb);
 384  out:
 385         nl_cb_put(cb);
 386         nlmsg_free(msg);
 387         return err;
 388 }
 389
 390
 391 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 392                               struct nl_msg *msg,
 393                               int (*valid_handler)(struct nl_msg *, void *),
 394                               void *valid_data)
 395 {
 396         return send_and_recv(drv, drv->global->nl.handle, msg, valid_handler,
 397                              valid_data);
 398 }
 399
 400
 401 struct family_data {
 402         const char *group;
 403         int id;
 404 };
 405
 406
 407 static int family_handler(struct nl_msg *msg, void *arg)
 408 {
 409         struct family_data *res = arg;
 410         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 411         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 412         struct nlattr *mcgrp;
 413         int i;
 414
 415         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 416                   genlmsg_attrlen(gnlh, 0), NULL);
 417         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 418                 return NL_SKIP;
 419
 420         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 421                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 422                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 423                           nla_len(mcgrp), NULL);
 424                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 425                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 426                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 427                                res->group,
 428                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 429                         continue;
 430                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 431                 break;
 432         };
 433
 434         return NL_SKIP;
 435 }
 436
 437
 438 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 439                                const char *family, const char *group)
 440 {
 441         struct nl_msg *msg;
 442         int ret = -1;
 443         struct family_data res = { group, -ENOENT };
 444
 445         msg = nlmsg_alloc();
 446         if (!msg)
 447                 return -ENOMEM;
 448         genlmsg_put(msg, 0, 0,
 449                     genl_ctrl_resolve(drv->global->nl.handle, "nlctrl"),
 450                     0, 0, CTRL_CMD_GETFAMILY, 0);
 451         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 452
 453         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 454         msg = NULL;
 455         if (ret == 0)
 456                 ret = res.id;
 457
 458 nla_put_failure:
 459         nlmsg_free(msg);
 460         return ret;
 461 }
 462
 463
 464 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 465                           struct nl_msg *msg, int flags, uint8_t cmd)
 466 {
 467         return genlmsg_put(msg, 0, 0, genl_family_get_id(drv->global->nl80211),
 468                            0, flags, cmd, 0);
 469 }
 470
 471
 472 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 473 {
 474         struct i802_bss *bss = priv;
 475         struct wpa_driver_nl80211_data *drv = bss->drv;
 476         if (!drv->associated)
 477                 return -1;
 478         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 479         return 0;
 480 }
 481
 482
 483 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 484 {
 485         struct i802_bss *bss = priv;
 486         struct wpa_driver_nl80211_data *drv = bss->drv;
 487         if (!drv->associated)
 488                 return -1;
 489         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 490         return drv->ssid_len;
 491 }
 492
 493
 494 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 495                                           char *buf, size_t len, int del)
 496 {
 497         union wpa_event_data event;
 498
 499         os_memset(&event, 0, sizeof(event));
 500         if (len > sizeof(event.interface_status.ifname))
 501                 len = sizeof(event.interface_status.ifname) - 1;
 502         os_memcpy(event.interface_status.ifname, buf, len);
 503         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 504                 EVENT_INTERFACE_ADDED;
 505
 506         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 507                    del ? "DEL" : "NEW",
 508                    event.interface_status.ifname,
 509                    del ? "removed" : "added");
 510
 511         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 512                 if (del)
 513                         drv->if_removed = 1;
 514                 else
 515                         drv->if_removed = 0;
 516         }
 517
 518         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 519 }
 520
 521
 522 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 523                                          u8 *buf, size_t len)
 524 {
 525         int attrlen, rta_len;
 526         struct rtattr *attr;
 527
 528         attrlen = len;
 529         attr = (struct rtattr *) buf;
 530
 531         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 532         while (RTA_OK(attr, attrlen)) {
 533                 if (attr->rta_type == IFLA_IFNAME) {
 534                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 535                             == 0)
 536                                 return 1;
 537                         else
 538                                 break;
 539                 }
 540                 attr = RTA_NEXT(attr, attrlen);
 541         }
 542
 543         return 0;
 544 }
 545
 546
 547 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 548                                           int ifindex, u8 *buf, size_t len)
 549 {
 550         if (drv->ifindex == ifindex)
 551                 return 1;
 552
 553         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 554                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 555                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 556                            "interface");
 557                 wpa_driver_nl80211_finish_drv_init(drv);
 558                 return 1;
 559         }
 560
 561         return 0;
 562 }
 563
 564
 565 static struct wpa_driver_nl80211_data *
 566 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 567 {
 568         struct wpa_driver_nl80211_data *drv;
 569         dl_list_for_each(drv, &global->interfaces,
 570                          struct wpa_driver_nl80211_data, list) {
 571                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 572                     have_ifidx(drv, idx))
 573                         return drv;
 574         }
 575         return NULL;
 576 }
 577
 578
 579 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 580                                                  struct ifinfomsg *ifi,
 581                                                  u8 *buf, size_t len)
 582 {
 583         struct nl80211_global *global = ctx;
 584         struct wpa_driver_nl80211_data *drv;
 585         int attrlen, rta_len;
 586         struct rtattr *attr;
 587         u32 brid = 0;
 588
 589         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 590         if (!drv) {
 591                 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
 592                            "ifindex %d", ifi->ifi_index);
 593                 return;
 594         }
 595
 596         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 597                    "(%s%s%s%s)",
 598                    drv->operstate, ifi->ifi_flags,
 599                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 600                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 601                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 602                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 603
 604         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 605                 char namebuf[IFNAMSIZ];
 606                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 607                     linux_iface_up(drv->global->ioctl_sock,
 608                                    drv->first_bss.ifname) > 0) {
 609                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 610                                    "event since interface %s is up", namebuf);
 611                         return;
 612                 }
 613                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 614                 if (drv->ignore_if_down_event) {
 615                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 616                                    "event generated by mode change");
 617                         drv->ignore_if_down_event = 0;
 618                 } else {
 619                         drv->if_disabled = 1;
 620                         wpa_supplicant_event(drv->ctx,
 621                                              EVENT_INTERFACE_DISABLED, NULL);
 622                 }
 623         }
 624
 625         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 626                 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
 627                 drv->if_disabled = 0;
 628                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
 629         }
 630
 631         /*
 632          * Some drivers send the association event before the operup event--in
 633          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 634          * fails. This will hit us when wpa_supplicant does not need to do
 635          * IEEE 802.1X authentication
 636          */
 637         if (drv->operstate == 1 &&
 638             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 639             !(ifi->ifi_flags & IFF_RUNNING))
 640                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
 641                                        -1, IF_OPER_UP);
 642
 643         attrlen = len;
 644         attr = (struct rtattr *) buf;
 645         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 646         while (RTA_OK(attr, attrlen)) {
 647                 if (attr->rta_type == IFLA_IFNAME) {
 648                         wpa_driver_nl80211_event_link(
 649                                 drv,
 650                                 ((char *) attr) + rta_len,
 651                                 attr->rta_len - rta_len, 0);
 652                 } else if (attr->rta_type == IFLA_MASTER)
 653                         brid = nla_get_u32((struct nlattr *) attr);
 654                 attr = RTA_NEXT(attr, attrlen);
 655         }
 656
 657         if (ifi->ifi_family == AF_BRIDGE && brid) {
 658                 /* device has been added to bridge */
 659                 char namebuf[IFNAMSIZ];
 660                 if_indextoname(brid, namebuf);
 661                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
 662                            brid, namebuf);
 663                 add_ifidx(drv, brid);
 664         }
 665 }
 666
 667
 668 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 669                                                  struct ifinfomsg *ifi,
 670                                                  u8 *buf, size_t len)
 671 {
 672         struct nl80211_global *global = ctx;
 673         struct wpa_driver_nl80211_data *drv;
 674         int attrlen, rta_len;
 675         struct rtattr *attr;
 676         u32 brid = 0;
 677
 678         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 679         if (!drv) {
 680                 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
 681                            "foreign ifindex %d", ifi->ifi_index);
 682                 return;
 683         }
 684
 685         attrlen = len;
 686         attr = (struct rtattr *) buf;
 687
 688         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 689         while (RTA_OK(attr, attrlen)) {
 690                 if (attr->rta_type == IFLA_IFNAME) {
 691                         wpa_driver_nl80211_event_link(
 692                                 drv,
 693                                 ((char *) attr) + rta_len,
 694                                 attr->rta_len - rta_len, 1);
 695                 } else if (attr->rta_type == IFLA_MASTER)
 696                         brid = nla_get_u32((struct nlattr *) attr);
 697                 attr = RTA_NEXT(attr, attrlen);
 698         }
 699
 700         if (ifi->ifi_family == AF_BRIDGE && brid) {
 701                 /* device has been removed from bridge */
 702                 char namebuf[IFNAMSIZ];
 703                 if_indextoname(brid, namebuf);
 704                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
 705                            "%s", brid, namebuf);
 706                 del_ifidx(drv, brid);
 707         }
 708 }
 709
 710
 711 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 712                             const u8 *frame, size_t len)
 713 {
 714         const struct ieee80211_mgmt *mgmt;
 715         union wpa_event_data event;
 716
 717         mgmt = (const struct ieee80211_mgmt *) frame;
 718         if (len < 24 + sizeof(mgmt->u.auth)) {
 719                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 720                            "frame");
 721                 return;
 722         }
 723
 724         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 725         os_memset(&event, 0, sizeof(event));
 726         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 727         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 728         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 729         if (len > 24 + sizeof(mgmt->u.auth)) {
 730                 event.auth.ies = mgmt->u.auth.variable;
 731                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 732         }
 733
 734         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 735 }
 736
 737
 738 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
 739 {
 740         struct nl_msg *msg;
 741         int ret;
 742         struct nl80211_bss_info_arg arg;
 743
 744         os_memset(&arg, 0, sizeof(arg));
 745         msg = nlmsg_alloc();
 746         if (!msg)
 747                 goto nla_put_failure;
 748
 749         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
 750         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
 751
 752         arg.drv = drv;
 753         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
 754         msg = NULL;
 755         if (ret == 0) {
 756                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
 757                            "associated BSS from scan results: %u MHz",
 758                            arg.assoc_freq);
 759                 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
 760         }
 761         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
 762                    "(%s)", ret, strerror(-ret));
 763 nla_put_failure:
 764         nlmsg_free(msg);
 765         return drv->assoc_freq;
 766 }
 767
 768
 769 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 770                             const u8 *frame, size_t len)
 771 {
 772         const struct ieee80211_mgmt *mgmt;
 773         union wpa_event_data event;
 774         u16 status;
 775
 776         mgmt = (const struct ieee80211_mgmt *) frame;
 777         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 778                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 779                            "frame");
 780                 return;
 781         }
 782
 783         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 784         if (status != WLAN_STATUS_SUCCESS) {
 785                 os_memset(&event, 0, sizeof(event));
 786                 event.assoc_reject.bssid = mgmt->bssid;
 787                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 788                         event.assoc_reject.resp_ies =
 789                                 (u8 *) mgmt->u.assoc_resp.variable;
 790                         event.assoc_reject.resp_ies_len =
 791                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 792                 }
 793                 event.assoc_reject.status_code = status;
 794
 795                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 796                 return;
 797         }
 798
 799         drv->associated = 1;
 800         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 801
 802         os_memset(&event, 0, sizeof(event));
 803         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 804                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 805                 event.assoc_info.resp_ies_len =
 806                         len - 24 - sizeof(mgmt->u.assoc_resp);
 807         }
 808
 809         event.assoc_info.freq = drv->assoc_freq;
 810
 811         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 812 }
 813
 814
 815 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 816                                enum nl80211_commands cmd, struct nlattr *status,
 817                                struct nlattr *addr, struct nlattr *req_ie,
 818                                struct nlattr *resp_ie)
 819 {
 820         union wpa_event_data event;
 821
 822         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 823                 /*
 824                  * Avoid reporting two association events that would confuse
 825                  * the core code.
 826                  */
 827                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 828                            "when using userspace SME", cmd);
 829                 return;
 830         }
 831
 832         os_memset(&event, 0, sizeof(event));
 833         if (cmd == NL80211_CMD_CONNECT &&
 834             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 835                 if (addr)
 836                         event.assoc_reject.bssid = nla_data(addr);
 837                 if (resp_ie) {
 838                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 839                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 840                 }
 841                 event.assoc_reject.status_code = nla_get_u16(status);
 842                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 843                 return;
 844         }
 845
 846         drv->associated = 1;
 847         if (addr)
 848                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 849
 850         if (req_ie) {
 851                 event.assoc_info.req_ies = nla_data(req_ie);
 852                 event.assoc_info.req_ies_len = nla_len(req_ie);
 853         }
 854         if (resp_ie) {
 855                 event.assoc_info.resp_ies = nla_data(resp_ie);
 856                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 857         }
 858
 859         event.assoc_info.freq = nl80211_get_assoc_freq(drv);
 860
 861         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 862 }
 863
 864
 865 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
 866                                   struct nlattr *reason, struct nlattr *addr)
 867 {
 868         union wpa_event_data data;
 869
 870         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 871                 /*
 872                  * Avoid reporting two disassociation events that could
 873                  * confuse the core code.
 874                  */
 875                 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
 876                            "event when using userspace SME");
 877                 return;
 878         }
 879
 880         drv->associated = 0;
 881         os_memset(&data, 0, sizeof(data));
 882         if (reason)
 883                 data.disassoc_info.reason_code = nla_get_u16(reason);
 884         wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
 885 }
 886
 887
 888 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 889                                enum nl80211_commands cmd, struct nlattr *addr)
 890 {
 891         union wpa_event_data event;
 892         enum wpa_event_type ev;
 893
 894         if (nla_len(addr) != ETH_ALEN)
 895                 return;
 896
 897         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 898                    cmd, MAC2STR((u8 *) nla_data(addr)));
 899
 900         if (cmd == NL80211_CMD_AUTHENTICATE)
 901                 ev = EVENT_AUTH_TIMED_OUT;
 902         else if (cmd == NL80211_CMD_ASSOCIATE)
 903                 ev = EVENT_ASSOC_TIMED_OUT;
 904         else
 905                 return;
 906
 907         os_memset(&event, 0, sizeof(event));
 908         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 909         wpa_supplicant_event(drv->ctx, ev, &event);
 910 }
 911
 912
 913 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
 914                             struct nlattr *freq, const u8 *frame, size_t len)
 915 {
 916         const struct ieee80211_mgmt *mgmt;
 917         union wpa_event_data event;
 918         u16 fc, stype;
 919
 920         mgmt = (const struct ieee80211_mgmt *) frame;
 921         if (len < 24) {
 922                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
 923                 return;
 924         }
 925
 926         fc = le_to_host16(mgmt->frame_control);
 927         stype = WLAN_FC_GET_STYPE(fc);
 928
 929         os_memset(&event, 0, sizeof(event));
 930         if (freq) {
 931                 event.rx_action.freq = nla_get_u32(freq);
 932                 drv->last_mgmt_freq = event.rx_action.freq;
 933         }
 934         if (stype == WLAN_FC_STYPE_ACTION) {
 935                 event.rx_action.da = mgmt->da;
 936                 event.rx_action.sa = mgmt->sa;
 937                 event.rx_action.bssid = mgmt->bssid;
 938                 event.rx_action.category = mgmt->u.action.category;
 939                 event.rx_action.data = &mgmt->u.action.category + 1;
 940                 event.rx_action.len = frame + len - event.rx_action.data;
 941                 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
 942         } else {
 943                 event.rx_mgmt.frame = frame;
 944                 event.rx_mgmt.frame_len = len;
 945                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 946         }
 947 }
 948
 949
 950 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
 951                                         struct nlattr *cookie, const u8 *frame,
 952                                         size_t len, struct nlattr *ack)
 953 {
 954         union wpa_event_data event;
 955         const struct ieee80211_hdr *hdr;
 956         u16 fc;
 957         u64 cookie_val;
 958
 959         if (!cookie)
 960                 return;
 961
 962         cookie_val = nla_get_u64(cookie);
 963         wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
 964                    "(ack=%d)",
 965                    (long long unsigned int) cookie_val,
 966                    cookie_val == drv->send_action_cookie ?
 967                    " (match)" : " (unknown)", ack != NULL);
 968         if (cookie_val != drv->send_action_cookie)
 969                 return;
 970
 971         hdr = (const struct ieee80211_hdr *) frame;
 972         fc = le_to_host16(hdr->frame_control);
 973
 974         os_memset(&event, 0, sizeof(event));
 975         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 976         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 977         event.tx_status.dst = hdr->addr1;
 978         event.tx_status.data = frame;
 979         event.tx_status.data_len = len;
 980         event.tx_status.ack = ack != NULL;
 981         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
 982 }
 983
 984
 985 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
 986                                        enum wpa_event_type type,
 987                                        const u8 *frame, size_t len)
 988 {
 989         const struct ieee80211_mgmt *mgmt;
 990         union wpa_event_data event;
 991         const u8 *bssid = NULL;
 992         u16 reason_code = 0;
 993
 994         mgmt = (const struct ieee80211_mgmt *) frame;
 995         if (len >= 24) {
 996                 bssid = mgmt->bssid;
 997
 998                 if (drv->associated != 0 &&
 999                     os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1000                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1001                         /*
1002                          * We have presumably received this deauth as a
1003                          * response to a clear_state_mismatch() outgoing
1004                          * deauth.  Don't let it take us offline!
1005                          */
1006                         wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1007                                    "from Unknown BSSID " MACSTR " -- ignoring",
1008                                    MAC2STR(bssid));
1009                         return;
1010                 }
1011         }
1012
1013         drv->associated = 0;
1014         os_memset(&event, 0, sizeof(event));
1015
1016         /* Note: Same offset for Reason Code in both frame subtypes */
1017         if (len >= 24 + sizeof(mgmt->u.deauth))
1018                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1019
1020         if (type == EVENT_DISASSOC) {
1021                 event.disassoc_info.addr = bssid;
1022                 event.disassoc_info.reason_code = reason_code;
1023                 if (frame + len > mgmt->u.disassoc.variable) {
1024                         event.disassoc_info.ie = mgmt->u.disassoc.variable;
1025                         event.disassoc_info.ie_len = frame + len -
1026                                 mgmt->u.disassoc.variable;
1027                 }
1028         } else {
1029                 event.deauth_info.addr = bssid;
1030                 event.deauth_info.reason_code = reason_code;
1031                 if (frame + len > mgmt->u.deauth.variable) {
1032                         event.deauth_info.ie = mgmt->u.deauth.variable;
1033                         event.deauth_info.ie_len = frame + len -
1034                                 mgmt->u.deauth.variable;
1035                 }
1036         }
1037
1038         wpa_supplicant_event(drv->ctx, type, &event);
1039 }
1040
1041
1042 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1043                                          enum wpa_event_type type,
1044                                          const u8 *frame, size_t len)
1045 {
1046         const struct ieee80211_mgmt *mgmt;
1047         union wpa_event_data event;
1048         u16 reason_code = 0;
1049
1050         if (len < 24)
1051                 return;
1052
1053         mgmt = (const struct ieee80211_mgmt *) frame;
1054
1055         os_memset(&event, 0, sizeof(event));
1056         /* Note: Same offset for Reason Code in both frame subtypes */
1057         if (len >= 24 + sizeof(mgmt->u.deauth))
1058                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1059
1060         if (type == EVENT_UNPROT_DISASSOC) {
1061                 event.unprot_disassoc.sa = mgmt->sa;
1062                 event.unprot_disassoc.da = mgmt->da;
1063                 event.unprot_disassoc.reason_code = reason_code;
1064         } else {
1065                 event.unprot_deauth.sa = mgmt->sa;
1066                 event.unprot_deauth.da = mgmt->da;
1067                 event.unprot_deauth.reason_code = reason_code;
1068         }
1069
1070         wpa_supplicant_event(drv->ctx, type, &event);
1071 }
1072
1073
1074 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1075                        enum nl80211_commands cmd, struct nlattr *frame,
1076                        struct nlattr *addr, struct nlattr *timed_out,
1077                        struct nlattr *freq, struct nlattr *ack,
1078                        struct nlattr *cookie)
1079 {
1080         if (timed_out && addr) {
1081                 mlme_timeout_event(drv, cmd, addr);
1082                 return;
1083         }
1084
1085         if (frame == NULL) {
1086                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1087                            "data", cmd);
1088                 return;
1089         }
1090
1091         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1092         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1093                     nla_data(frame), nla_len(frame));
1094
1095         switch (cmd) {
1096         case NL80211_CMD_AUTHENTICATE:
1097                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1098                 break;
1099         case NL80211_CMD_ASSOCIATE:
1100                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1101                 break;
1102         case NL80211_CMD_DEAUTHENTICATE:
1103                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1104                                            nla_data(frame), nla_len(frame));
1105                 break;
1106         case NL80211_CMD_DISASSOCIATE:
1107                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1108                                            nla_data(frame), nla_len(frame));
1109                 break;
1110         case NL80211_CMD_FRAME:
1111                 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
1112                 break;
1113         case NL80211_CMD_FRAME_TX_STATUS:
1114                 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
1115                                             nla_len(frame), ack);
1116                 break;
1117         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1118                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1119                                              nla_data(frame), nla_len(frame));
1120                 break;
1121         case NL80211_CMD_UNPROT_DISASSOCIATE:
1122                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1123                                              nla_data(frame), nla_len(frame));
1124                 break;
1125         default:
1126                 break;
1127         }
1128 }
1129
1130
1131 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1132                                            struct nlattr *tb[])
1133 {
1134         union wpa_event_data data;
1135
1136         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1137         os_memset(&data, 0, sizeof(data));
1138         if (tb[NL80211_ATTR_MAC]) {
1139                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1140                             nla_data(tb[NL80211_ATTR_MAC]),
1141                             nla_len(tb[NL80211_ATTR_MAC]));
1142                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1143         }
1144         if (tb[NL80211_ATTR_KEY_SEQ]) {
1145                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1146                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1147                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1148         }
1149         if (tb[NL80211_ATTR_KEY_TYPE]) {
1150                 enum nl80211_key_type key_type =
1151                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1152                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1153                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1154                         data.michael_mic_failure.unicast = 1;
1155         } else
1156                 data.michael_mic_failure.unicast = 1;
1157
1158         if (tb[NL80211_ATTR_KEY_IDX]) {
1159                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1160                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1161         }
1162
1163         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1164 }
1165
1166
1167 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1168                                  struct nlattr *tb[])
1169 {
1170         if (tb[NL80211_ATTR_MAC] == NULL) {
1171                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1172                            "event");
1173                 return;
1174         }
1175         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1176         drv->associated = 1;
1177         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1178                    MAC2STR(drv->bssid));
1179
1180         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1181 }
1182
1183
1184 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1185                                          int cancel_event, struct nlattr *tb[])
1186 {
1187         unsigned int freq, chan_type, duration;
1188         union wpa_event_data data;
1189         u64 cookie;
1190
1191         if (tb[NL80211_ATTR_WIPHY_FREQ])
1192                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1193         else
1194                 freq = 0;
1195
1196         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1197                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1198         else
1199                 chan_type = 0;
1200
1201         if (tb[NL80211_ATTR_DURATION])
1202                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1203         else
1204                 duration = 0;
1205
1206         if (tb[NL80211_ATTR_COOKIE])
1207                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1208         else
1209                 cookie = 0;
1210
1211         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1212                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1213                    cancel_event, freq, chan_type, duration,
1214                    (long long unsigned int) cookie,
1215                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1216
1217         if (cookie != drv->remain_on_chan_cookie)
1218                 return; /* not for us */
1219
1220         if (cancel_event)
1221                 drv->pending_remain_on_chan = 0;
1222
1223         os_memset(&data, 0, sizeof(data));
1224         data.remain_on_channel.freq = freq;
1225         data.remain_on_channel.duration = duration;
1226         wpa_supplicant_event(drv->ctx, cancel_event ?
1227                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
1228                              EVENT_REMAIN_ON_CHANNEL, &data);
1229 }
1230
1231
1232 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1233                             struct nlattr *tb[])
1234 {
1235         union wpa_event_data event;
1236         struct nlattr *nl;
1237         int rem;
1238         struct scan_info *info;
1239 #define MAX_REPORT_FREQS 50
1240         int freqs[MAX_REPORT_FREQS];
1241         int num_freqs = 0;
1242
1243         os_memset(&event, 0, sizeof(event));
1244         info = &event.scan_info;
1245         info->aborted = aborted;
1246
1247         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1248                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1249                         struct wpa_driver_scan_ssid *s =
1250                                 &info->ssids[info->num_ssids];
1251                         s->ssid = nla_data(nl);
1252                         s->ssid_len = nla_len(nl);
1253                         info->num_ssids++;
1254                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1255                                 break;
1256                 }
1257         }
1258         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1259                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1260                 {
1261                         freqs[num_freqs] = nla_get_u32(nl);
1262                         num_freqs++;
1263                         if (num_freqs == MAX_REPORT_FREQS - 1)
1264                                 break;
1265                 }
1266                 info->freqs = freqs;
1267                 info->num_freqs = num_freqs;
1268         }
1269         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1270 }
1271
1272
1273 static int get_link_signal(struct nl_msg *msg, void *arg)
1274 {
1275         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1276         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1277         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1278         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1279                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1280         };
1281         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1282         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1283                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1284                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1285                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1286                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1287         };
1288         struct wpa_signal_info *sig_change = arg;
1289
1290         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1291                   genlmsg_attrlen(gnlh, 0), NULL);
1292         if (!tb[NL80211_ATTR_STA_INFO] ||
1293             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1294                              tb[NL80211_ATTR_STA_INFO], policy))
1295                 return NL_SKIP;
1296         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1297                 return NL_SKIP;
1298
1299         sig_change->current_signal =
1300                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1301
1302         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1303                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1304                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1305                                      rate_policy)) {
1306                         sig_change->current_txrate = 0;
1307                 } else {
1308                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1309                                 sig_change->current_txrate =
1310                                         nla_get_u16(rinfo[
1311                                              NL80211_RATE_INFO_BITRATE]) * 100;
1312                         }
1313                 }
1314         }
1315
1316         return NL_SKIP;
1317 }
1318
1319
1320 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1321                                    struct wpa_signal_info *sig)
1322 {
1323         struct nl_msg *msg;
1324
1325         sig->current_signal = -9999;
1326         sig->current_txrate = 0;
1327
1328         msg = nlmsg_alloc();
1329         if (!msg)
1330                 return -ENOMEM;
1331
1332         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1333
1334         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1335         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1336
1337         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1338  nla_put_failure:
1339         return -ENOBUFS;
1340 }
1341
1342
1343 static int get_link_noise(struct nl_msg *msg, void *arg)
1344 {
1345         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1346         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1347         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1348         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1349                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1350                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1351         };
1352         struct wpa_signal_info *sig_change = arg;
1353
1354         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1355                   genlmsg_attrlen(gnlh, 0), NULL);
1356
1357         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1358                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1359                 return NL_SKIP;
1360         }
1361
1362         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1363                              tb[NL80211_ATTR_SURVEY_INFO],
1364                              survey_policy)) {
1365                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1366                            "attributes!");
1367                 return NL_SKIP;
1368         }
1369
1370         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1371                 return NL_SKIP;
1372
1373         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1374             sig_change->frequency)
1375                 return NL_SKIP;
1376
1377         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1378                 return NL_SKIP;
1379
1380         sig_change->current_noise =
1381                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1382
1383         return NL_SKIP;
1384 }
1385
1386
1387 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1388                                   struct wpa_signal_info *sig_change)
1389 {
1390         struct nl_msg *msg;
1391
1392         sig_change->current_noise = 9999;
1393         sig_change->frequency = drv->assoc_freq;
1394
1395         msg = nlmsg_alloc();
1396         if (!msg)
1397                 return -ENOMEM;
1398
1399         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1400
1401         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1402
1403         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1404  nla_put_failure:
1405         return -ENOBUFS;
1406 }
1407
1408
1409 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1410                               struct nlattr *tb[])
1411 {
1412         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1413                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1414                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1415                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1416                 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1417         };
1418         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1419         enum nl80211_cqm_rssi_threshold_event event;
1420         union wpa_event_data ed;
1421         struct wpa_signal_info sig;
1422         int res;
1423
1424         if (tb[NL80211_ATTR_CQM] == NULL ||
1425             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1426                              cqm_policy)) {
1427                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1428                 return;
1429         }
1430
1431         os_memset(&ed, 0, sizeof(ed));
1432
1433         if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1434                 if (!tb[NL80211_ATTR_MAC])
1435                         return;
1436                 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1437                           ETH_ALEN);
1438                 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1439                 return;
1440         }
1441
1442         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1443                 return;
1444         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1445
1446         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1447                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1448                            "event: RSSI high");
1449                 ed.signal_change.above_threshold = 1;
1450         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1451                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1452                            "event: RSSI low");
1453                 ed.signal_change.above_threshold = 0;
1454         } else
1455                 return;
1456
1457         res = nl80211_get_link_signal(drv, &sig);
1458         if (res == 0) {
1459                 ed.signal_change.current_signal = sig.current_signal;
1460                 ed.signal_change.current_txrate = sig.current_txrate;
1461                 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm  txrate: %d",
1462                            sig.current_signal, sig.current_txrate);
1463         }
1464
1465         res = nl80211_get_link_noise(drv, &sig);
1466         if (res == 0) {
1467                 ed.signal_change.current_noise = sig.current_noise;
1468                 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1469                            sig.current_noise);
1470         }
1471
1472         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1473 }
1474
1475
1476 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1477                                       struct nlattr **tb)
1478 {
1479         u8 *addr;
1480         union wpa_event_data data;
1481
1482         if (tb[NL80211_ATTR_MAC] == NULL)
1483                 return;
1484         addr = nla_data(tb[NL80211_ATTR_MAC]);
1485         wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1486
1487         if (is_ap_interface(drv->nlmode) && drv->no_monitor_iface_capab) {
1488                 u8 *ies = NULL;
1489                 size_t ies_len = 0;
1490                 if (tb[NL80211_ATTR_IE]) {
1491                         ies = nla_data(tb[NL80211_ATTR_IE]);
1492                         ies_len = nla_len(tb[NL80211_ATTR_IE]);
1493                 }
1494                 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1495                 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1496                 return;
1497         }
1498
1499         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1500                 return;
1501
1502         os_memset(&data, 0, sizeof(data));
1503         os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1504         wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1505 }
1506
1507
1508 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1509                                       struct nlattr **tb)
1510 {
1511         u8 *addr;
1512         union wpa_event_data data;
1513
1514         if (tb[NL80211_ATTR_MAC] == NULL)
1515                 return;
1516         addr = nla_data(tb[NL80211_ATTR_MAC]);
1517         wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1518                    MAC2STR(addr));
1519
1520         if (is_ap_interface(drv->nlmode) && drv->no_monitor_iface_capab) {
1521                 drv_event_disassoc(drv->ctx, addr);
1522                 return;
1523         }
1524
1525         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1526                 return;
1527
1528         os_memset(&data, 0, sizeof(data));
1529         os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1530         wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1531 }
1532
1533
1534 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1535                                         struct nlattr **tb)
1536 {
1537         struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1538         static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1539                 [NL80211_REKEY_DATA_KEK] = {
1540                         .minlen = NL80211_KEK_LEN,
1541                         .maxlen = NL80211_KEK_LEN,
1542                 },
1543                 [NL80211_REKEY_DATA_KCK] = {
1544                         .minlen = NL80211_KCK_LEN,
1545                         .maxlen = NL80211_KCK_LEN,
1546                 },
1547                 [NL80211_REKEY_DATA_REPLAY_CTR] = {
1548                         .minlen = NL80211_REPLAY_CTR_LEN,
1549                         .maxlen = NL80211_REPLAY_CTR_LEN,
1550                 },
1551         };
1552         union wpa_event_data data;
1553
1554         if (!tb[NL80211_ATTR_MAC])
1555                 return;
1556         if (!tb[NL80211_ATTR_REKEY_DATA])
1557                 return;
1558         if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
1559                              tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
1560                 return;
1561         if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
1562                 return;
1563
1564         os_memset(&data, 0, sizeof(data));
1565         data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
1566         wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
1567                    MAC2STR(data.driver_gtk_rekey.bssid));
1568         data.driver_gtk_rekey.replay_ctr =
1569                 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
1570         wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
1571                     data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
1572         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
1573 }
1574
1575
1576 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
1577                                           struct nlattr **tb)
1578 {
1579         struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
1580         static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
1581                 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
1582                 [NL80211_PMKSA_CANDIDATE_BSSID] = {
1583                         .minlen = ETH_ALEN,
1584                         .maxlen = ETH_ALEN,
1585                 },
1586                 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
1587         };
1588         union wpa_event_data data;
1589
1590         if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
1591                 return;
1592         if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
1593                              tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
1594                 return;
1595         if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
1596             !cand[NL80211_PMKSA_CANDIDATE_BSSID])
1597                 return;
1598
1599         os_memset(&data, 0, sizeof(data));
1600         os_memcpy(data.pmkid_candidate.bssid,
1601                   nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
1602         data.pmkid_candidate.index =
1603                 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
1604         data.pmkid_candidate.preauth =
1605                 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
1606         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
1607 }
1608
1609
1610 static int process_event(struct nl_msg *msg, void *arg)
1611 {
1612         struct wpa_driver_nl80211_data *drv = arg;
1613         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1614         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1615
1616         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1617                   genlmsg_attrlen(gnlh, 0), NULL);
1618
1619         if (tb[NL80211_ATTR_IFINDEX]) {
1620                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1621                 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1622                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1623                                    " for foreign interface (ifindex %d)",
1624                                    gnlh->cmd, ifindex);
1625                         return NL_SKIP;
1626                 }
1627         }
1628
1629         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
1630             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1631              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1632                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1633                                             drv->ap_scan_as_station);
1634                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1635         }
1636
1637         switch (gnlh->cmd) {
1638         case NL80211_CMD_TRIGGER_SCAN:
1639                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1640                 break;
1641         case NL80211_CMD_START_SCHED_SCAN:
1642                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
1643                 break;
1644         case NL80211_CMD_SCHED_SCAN_STOPPED:
1645                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
1646                 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
1647                 break;
1648         case NL80211_CMD_NEW_SCAN_RESULTS:
1649                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1650                 drv->scan_complete_events = 1;
1651                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1652                                      drv->ctx);
1653                 send_scan_event(drv, 0, tb);
1654                 break;
1655         case NL80211_CMD_SCHED_SCAN_RESULTS:
1656                 wpa_printf(MSG_DEBUG,
1657                            "nl80211: New sched scan results available");
1658                 send_scan_event(drv, 0, tb);
1659                 break;
1660         case NL80211_CMD_SCAN_ABORTED:
1661                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1662                 /*
1663                  * Need to indicate that scan results are available in order
1664                  * not to make wpa_supplicant stop its scanning.
1665                  */
1666                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1667                                      drv->ctx);
1668                 send_scan_event(drv, 1, tb);
1669                 break;
1670         case NL80211_CMD_AUTHENTICATE:
1671         case NL80211_CMD_ASSOCIATE:
1672         case NL80211_CMD_DEAUTHENTICATE:
1673         case NL80211_CMD_DISASSOCIATE:
1674         case NL80211_CMD_FRAME:
1675         case NL80211_CMD_FRAME_TX_STATUS:
1676         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1677         case NL80211_CMD_UNPROT_DISASSOCIATE:
1678                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1679                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1680                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1681                            tb[NL80211_ATTR_COOKIE]);
1682                 break;
1683         case NL80211_CMD_CONNECT:
1684         case NL80211_CMD_ROAM:
1685                 mlme_event_connect(drv, gnlh->cmd,
1686                                    tb[NL80211_ATTR_STATUS_CODE],
1687                                    tb[NL80211_ATTR_MAC],
1688                                    tb[NL80211_ATTR_REQ_IE],
1689                                    tb[NL80211_ATTR_RESP_IE]);
1690                 break;
1691         case NL80211_CMD_DISCONNECT:
1692                 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
1693                                       tb[NL80211_ATTR_MAC]);
1694                 break;
1695         case NL80211_CMD_MICHAEL_MIC_FAILURE:
1696                 mlme_event_michael_mic_failure(drv, tb);
1697                 break;
1698         case NL80211_CMD_JOIN_IBSS:
1699                 mlme_event_join_ibss(drv, tb);
1700                 break;
1701         case NL80211_CMD_REMAIN_ON_CHANNEL:
1702                 mlme_event_remain_on_channel(drv, 0, tb);
1703                 break;
1704         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1705                 mlme_event_remain_on_channel(drv, 1, tb);
1706                 break;
1707         case NL80211_CMD_NOTIFY_CQM:
1708                 nl80211_cqm_event(drv, tb);
1709                 break;
1710         case NL80211_CMD_REG_CHANGE:
1711                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
1712                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1713                                      NULL);
1714                 break;
1715         case NL80211_CMD_REG_BEACON_HINT:
1716                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
1717                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1718                                      NULL);
1719                 break;
1720         case NL80211_CMD_NEW_STATION:
1721                 nl80211_new_station_event(drv, tb);
1722                 break;
1723         case NL80211_CMD_DEL_STATION:
1724                 nl80211_del_station_event(drv, tb);
1725                 break;
1726         case NL80211_CMD_SET_REKEY_OFFLOAD:
1727                 nl80211_rekey_offload_event(drv, tb);
1728                 break;
1729         case NL80211_CMD_PMKSA_CANDIDATE:
1730                 nl80211_pmksa_candidate_event(drv, tb);
1731                 break;
1732         default:
1733                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1734                            "(cmd=%d)", gnlh->cmd);
1735                 break;
1736         }
1737
1738         return NL_SKIP;
1739 }
1740
1741
1742 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1743                                              void *handle)
1744 {
1745         struct nl_cb *cb;
1746         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1747
1748         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1749
1750         cb = nl_cb_clone(drv->global->nl_cb);
1751         if (!cb)
1752                 return;
1753         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1754         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1755         nl_recvmsgs(handle, cb);
1756         nl_cb_put(cb);
1757 }
1758
1759
1760 /**
1761  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1762  * @priv: driver_nl80211 private data
1763  * @alpha2_arg: country to which to switch to
1764  * Returns: 0 on success, -1 on failure
1765  *
1766  * This asks nl80211 to set the regulatory domain for given
1767  * country ISO / IEC alpha2.
1768  */
1769 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1770 {
1771         struct i802_bss *bss = priv;
1772         struct wpa_driver_nl80211_data *drv = bss->drv;
1773         char alpha2[3];
1774         struct nl_msg *msg;
1775
1776         msg = nlmsg_alloc();
1777         if (!msg)
1778                 return -ENOMEM;
1779
1780         alpha2[0] = alpha2_arg[0];
1781         alpha2[1] = alpha2_arg[1];
1782         alpha2[2] = '\0';
1783
1784         nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
1785
1786         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1787         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1788                 return -EINVAL;
1789         return 0;
1790 nla_put_failure:
1791         return -EINVAL;
1792 }
1793
1794
1795 struct wiphy_info_data {
1796         struct wpa_driver_capa *capa;
1797
1798         unsigned int error:1;
1799 };
1800
1801
1802 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1803 {
1804         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1805         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1806         struct wiphy_info_data *info = arg;
1807         int p2p_go_supported = 0, p2p_client_supported = 0;
1808         int p2p_concurrent = 0;
1809         int auth_supported = 0, connect_supported = 0;
1810         struct wpa_driver_capa *capa = info->capa;
1811         static struct nla_policy
1812         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
1813                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
1814                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
1815                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
1816                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
1817         },
1818         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
1819                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
1820                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
1821         };
1822
1823         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1824                   genlmsg_attrlen(gnlh, 0), NULL);
1825
1826         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1827                 capa->max_scan_ssids =
1828                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1829
1830         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
1831                 capa->max_sched_scan_ssids =
1832                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
1833
1834         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
1835                 capa->max_match_sets =
1836                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
1837
1838         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1839                 struct nlattr *nl_mode;
1840                 int i;
1841                 nla_for_each_nested(nl_mode,
1842                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1843                         switch (nla_type(nl_mode)) {
1844                         case NL80211_IFTYPE_AP:
1845                                 capa->flags |= WPA_DRIVER_FLAGS_AP;
1846                                 break;
1847                         case NL80211_IFTYPE_P2P_GO:
1848                                 p2p_go_supported = 1;
1849                                 break;
1850                         case NL80211_IFTYPE_P2P_CLIENT:
1851                                 p2p_client_supported = 1;
1852                                 break;
1853                         }
1854                 }
1855         }
1856
1857         if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
1858                 struct nlattr *nl_combi;
1859                 int rem_combi;
1860
1861                 nla_for_each_nested(nl_combi,
1862                                     tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
1863                                     rem_combi) {
1864                         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
1865                         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
1866                         struct nlattr *nl_limit, *nl_mode;
1867                         int err, rem_limit, rem_mode;
1868                         int combination_has_p2p = 0, combination_has_mgd = 0;
1869
1870                         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
1871                                                nl_combi,
1872                                                iface_combination_policy);
1873                         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
1874                             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
1875                             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
1876                                 goto broken_combination;
1877
1878                         nla_for_each_nested(nl_limit,
1879                                             tb_comb[NL80211_IFACE_COMB_LIMITS],
1880                                             rem_limit) {
1881                                 err = nla_parse_nested(tb_limit,
1882                                                        MAX_NL80211_IFACE_LIMIT,
1883                                                        nl_limit,
1884                                                        iface_limit_policy);
1885                                 if (err ||
1886                                     !tb_limit[NL80211_IFACE_LIMIT_TYPES])
1887                                         goto broken_combination;
1888
1889                                 nla_for_each_nested(
1890                                         nl_mode,
1891                                         tb_limit[NL80211_IFACE_LIMIT_TYPES],
1892                                         rem_mode) {
1893                                         int ift = nla_type(nl_mode);
1894                                         if (ift == NL80211_IFTYPE_P2P_GO ||
1895                                             ift == NL80211_IFTYPE_P2P_CLIENT)
1896                                                 combination_has_p2p = 1;
1897                                         if (ift == NL80211_IFTYPE_STATION)
1898                                                 combination_has_mgd = 1;
1899                                 }
1900                                 if (combination_has_p2p && combination_has_mgd)
1901                                         break;
1902                         }
1903
1904                         if (combination_has_p2p && combination_has_mgd) {
1905                                 p2p_concurrent = 1;
1906                                 break;
1907                         }
1908
1909 broken_combination:
1910                         ;
1911                 }
1912         }
1913
1914         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1915                 struct nlattr *nl_cmd;
1916                 int i;
1917
1918                 nla_for_each_nested(nl_cmd,
1919                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1920                         switch (nla_get_u32(nl_cmd)) {
1921                         case NL80211_CMD_AUTHENTICATE:
1922                                 auth_supported = 1;
1923                                 break;
1924                         case NL80211_CMD_CONNECT:
1925                                 connect_supported = 1;
1926                                 break;
1927                         case NL80211_CMD_START_SCHED_SCAN:
1928                                 capa->sched_scan_supported = 1;
1929                                 break;
1930                         }
1931                 }
1932         }
1933
1934         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
1935                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
1936                            "off-channel TX");
1937                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
1938         }
1939
1940         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
1941                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
1942                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
1943         }
1944
1945         /* default to 5000 since early versions of mac80211 don't set it */
1946         capa->max_remain_on_chan = 5000;
1947
1948         if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
1949                 capa->max_remain_on_chan =
1950                         nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
1951
1952         if (auth_supported)
1953                 capa->flags |= WPA_DRIVER_FLAGS_SME;
1954         else if (!connect_supported) {
1955                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1956                            "authentication/association or connect commands");
1957                 info->error = 1;
1958         }
1959
1960         if (p2p_go_supported && p2p_client_supported)
1961                 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1962         if (p2p_concurrent) {
1963                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
1964                            "interface (driver advertised support)");
1965                 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
1966                 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
1967         }
1968
1969         if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
1970                 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
1971                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
1972
1973                 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
1974                         wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
1975                         capa->flags |=
1976                                 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
1977                 }
1978         }
1979
1980         return NL_SKIP;
1981 }
1982
1983
1984 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1985                                        struct wiphy_info_data *info)
1986 {
1987         struct nl_msg *msg;
1988
1989         os_memset(info, 0, sizeof(*info));
1990         info->capa = &drv->capa;
1991
1992         msg = nlmsg_alloc();
1993         if (!msg)
1994                 return -1;
1995
1996         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
1997
1998         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1999
2000         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2001                 return 0;
2002         msg = NULL;
2003 nla_put_failure:
2004         nlmsg_free(msg);
2005         return -1;
2006 }
2007
2008
2009 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2010 {
2011         struct wiphy_info_data info;
2012         if (wpa_driver_nl80211_get_info(drv, &info))
2013                 return -1;
2014
2015         if (info.error)
2016                 return -1;
2017
2018         drv->has_capability = 1;
2019         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2020         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2021                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2022                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2023                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2024         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2025                 WPA_DRIVER_CAPA_ENC_WEP104 |
2026                 WPA_DRIVER_CAPA_ENC_TKIP |
2027                 WPA_DRIVER_CAPA_ENC_CCMP;
2028         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2029                 WPA_DRIVER_AUTH_SHARED |
2030                 WPA_DRIVER_AUTH_LEAP;
2031
2032         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2033         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2034         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2035         drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2036
2037         return 0;
2038 }
2039
2040
2041 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2042 {
2043         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2044         if (global->nl_cb == NULL) {
2045                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2046                            "callbacks");
2047                 return -1;
2048         }
2049
2050         if (nl_create_handles(&global->nl, global->nl_cb, "nl"))
2051                 return -1;
2052
2053         global->nl80211 = genl_ctrl_search_by_name(global->nl.cache,
2054                                                    "nl80211");
2055         if (global->nl80211 == NULL) {
2056                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2057                            "found");
2058                 return -1;
2059         }
2060
2061         return 0;
2062 }
2063
2064
2065 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2066 {
2067         struct nl80211_global *global = drv->global;
2068         int ret;
2069
2070         /* Initialize generic netlink and nl80211 */
2071
2072         if (nl_create_handles(&drv->nl_event, global->nl_cb, "event"))
2073                 goto err3;
2074
2075         ret = nl_get_multicast_id(drv, "nl80211", "scan");
2076         if (ret >= 0)
2077                 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2078         if (ret < 0) {
2079                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2080                            "membership for scan events: %d (%s)",
2081                            ret, strerror(-ret));
2082                 goto err4;
2083         }
2084
2085         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
2086         if (ret >= 0)
2087                 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2088         if (ret < 0) {
2089                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2090                            "membership for mlme events: %d (%s)",
2091                            ret, strerror(-ret));
2092                 goto err4;
2093         }
2094
2095         ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
2096         if (ret >= 0)
2097                 ret = nl_socket_add_membership(drv->nl_event.handle, ret);
2098         if (ret < 0) {
2099                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2100                            "membership for regulatory events: %d (%s)",
2101                            ret, strerror(-ret));
2102                 /* Continue without regulatory events */
2103         }
2104
2105         eloop_register_read_sock(nl_socket_get_fd(drv->nl_event.handle),
2106                                  wpa_driver_nl80211_event_receive, drv,
2107                                  drv->nl_event.handle);
2108
2109         return 0;
2110
2111 err4:
2112         nl_destroy_handles(&drv->nl_event);
2113 err3:
2114         return -1;
2115 }
2116
2117
2118 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2119 {
2120         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2121         /*
2122          * This may be for any interface; use ifdown event to disable
2123          * interface.
2124          */
2125 }
2126
2127
2128 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2129 {
2130         struct wpa_driver_nl80211_data *drv = ctx;
2131         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2132         if (linux_set_iface_flags(drv->global->ioctl_sock,
2133                                   drv->first_bss.ifname, 1)) {
2134                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2135                            "after rfkill unblock");
2136                 return;
2137         }
2138         /* rtnetlink ifup handler will report interface as enabled */
2139 }
2140
2141
2142 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2143 {
2144         /* Find phy (radio) to which this interface belongs */
2145         char buf[90], *pos;
2146         int f, rv;
2147
2148         drv->phyname[0] = '\0';
2149         snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2150                  drv->first_bss.ifname);
2151         f = open(buf, O_RDONLY);
2152         if (f < 0) {
2153                 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2154                            buf, strerror(errno));
2155                 return;
2156         }
2157
2158         rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2159         close(f);
2160         if (rv < 0) {
2161                 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2162                            buf, strerror(errno));
2163                 return;
2164         }
2165
2166         drv->phyname[rv] = '\0';
2167         pos = os_strchr(drv->phyname, '\n');
2168         if (pos)
2169                 *pos = '\0';
2170         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2171                    drv->first_bss.ifname, drv->phyname);
2172 }
2173
2174
2175 #ifdef CONFIG_AP
2176 static void nl80211_l2_read(void *ctx, const u8 *src_addr, const u8 *buf,
2177                             size_t len)
2178 {
2179         wpa_printf(MSG_DEBUG, "nl80211: l2_packet read %u",
2180                    (unsigned int) len);
2181 }
2182 #endif /* CONFIG_AP */
2183
2184
2185 /**
2186  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2187  * @ctx: context to be used when calling wpa_supplicant functions,
2188  * e.g., wpa_supplicant_event()
2189  * @ifname: interface name, e.g., wlan0
2190  * @global_priv: private driver global data from global_init()
2191  * Returns: Pointer to private data, %NULL on failure
2192  */
2193 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2194                                       void *global_priv)
2195 {
2196         struct wpa_driver_nl80211_data *drv;
2197         struct rfkill_config *rcfg;
2198         struct i802_bss *bss;
2199
2200         drv = os_zalloc(sizeof(*drv));
2201         if (drv == NULL)
2202                 return NULL;
2203         drv->global = global_priv;
2204         drv->ctx = ctx;
2205         bss = &drv->first_bss;
2206         bss->drv = drv;
2207         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2208         drv->monitor_ifidx = -1;
2209         drv->monitor_sock = -1;
2210         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2211
2212         if (wpa_driver_nl80211_init_nl(drv)) {
2213                 os_free(drv);
2214                 return NULL;
2215         }
2216
2217         nl80211_get_phy_name(drv);
2218
2219         rcfg = os_zalloc(sizeof(*rcfg));
2220         if (rcfg == NULL)
2221                 goto failed;
2222         rcfg->ctx = drv;
2223         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
2224         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
2225         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
2226         drv->rfkill = rfkill_init(rcfg);
2227         if (drv->rfkill == NULL) {
2228                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
2229                 os_free(rcfg);
2230         }
2231
2232         if (wpa_driver_nl80211_finish_drv_init(drv))
2233                 goto failed;
2234
2235 #ifdef CONFIG_AP
2236         drv->l2 = l2_packet_init(ifname, NULL, ETH_P_EAPOL,
2237                                  nl80211_l2_read, drv, 0);
2238 #endif /* CONFIG_AP */
2239
2240         if (drv->global) {
2241                 dl_list_add(&drv->global->interfaces, &drv->list);
2242                 drv->in_interface_list = 1;
2243         }
2244
2245         return bss;
2246
2247 failed:
2248         wpa_driver_nl80211_deinit(bss);
2249         return NULL;
2250 }
2251
2252
2253 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
2254                                   struct nl_handle *nl_handle,
2255                                   u16 type, const u8 *match, size_t match_len)
2256 {
2257         struct nl_msg *msg;
2258         int ret = -1;
2259
2260         msg = nlmsg_alloc();
2261         if (!msg)
2262                 return -1;
2263
2264         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
2265
2266         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2267         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
2268         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
2269
2270         ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
2271         msg = NULL;
2272         if (ret) {
2273                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
2274                            "failed (type=%u): ret=%d (%s)",
2275                            type, ret, strerror(-ret));
2276                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
2277                             match, match_len);
2278                 goto nla_put_failure;
2279         }
2280         ret = 0;
2281 nla_put_failure:
2282         nlmsg_free(msg);
2283         return ret;
2284 }
2285
2286
2287 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
2288                                          const u8 *match, size_t match_len)
2289 {
2290         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
2291         return nl80211_register_frame(drv, drv->nl_event.handle,
2292                                       type, match, match_len);
2293 }
2294
2295
2296 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
2297 {
2298 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
2299         /* GAS Initial Request */
2300         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
2301                 return -1;
2302         /* GAS Initial Response */
2303         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
2304                 return -1;
2305         /* GAS Comeback Request */
2306         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
2307                 return -1;
2308         /* GAS Comeback Response */
2309         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
2310                 return -1;
2311 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
2312 #ifdef CONFIG_P2P
2313         /* P2P Public Action */
2314         if (nl80211_register_action_frame(drv,
2315                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
2316                                           6) < 0)
2317                 return -1;
2318         /* P2P Action */
2319         if (nl80211_register_action_frame(drv,
2320                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
2321                                           5) < 0)
2322                 return -1;
2323 #endif /* CONFIG_P2P */
2324 #ifdef CONFIG_IEEE80211W
2325         /* SA Query Response */
2326         if (nl80211_register_action_frame(drv, (u8 *) "\x08\x01", 2) < 0)
2327                 return -1;
2328 #endif /* CONFIG_IEEE80211W */
2329 #ifdef CONFIG_TDLS
2330         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
2331                 /* TDLS Discovery Response */
2332                 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0e", 2) <
2333                     0)
2334                         return -1;
2335         }
2336 #endif /* CONFIG_TDLS */
2337
2338         /* FT Action frames */
2339         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
2340                 return -1;
2341         else
2342                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
2343                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
2344
2345         /* WNM - BSS Transition Management Request */
2346         if (nl80211_register_action_frame(drv, (u8 *) "\x0a\x07", 2) < 0)
2347                 return -1;
2348
2349         return 0;
2350 }
2351
2352
2353 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2354 {
2355         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2356 }
2357
2358
2359 static int
2360 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
2361 {
2362         struct i802_bss *bss = &drv->first_bss;
2363         int send_rfkill_event = 0;
2364
2365         drv->ifindex = if_nametoindex(bss->ifname);
2366         drv->first_bss.ifindex = drv->ifindex;
2367
2368 #ifndef HOSTAPD
2369         /*
2370          * Make sure the interface starts up in station mode unless this is a
2371          * dynamically added interface (e.g., P2P) that was already configured
2372          * with proper iftype.
2373          */
2374         if ((drv->global == NULL ||
2375              drv->ifindex != drv->global->if_add_ifindex) &&
2376             wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
2377                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
2378                            "use managed mode");
2379                 return -1;
2380         }
2381
2382         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
2383                 if (rfkill_is_blocked(drv->rfkill)) {
2384                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2385                                    "interface '%s' due to rfkill",
2386                                    bss->ifname);
2387                         drv->if_disabled = 1;
2388                         send_rfkill_event = 1;
2389                 } else {
2390                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2391                                    "interface '%s' UP", bss->ifname);
2392                         return -1;
2393                 }
2394         }
2395
2396         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2397                                1, IF_OPER_DORMANT);
2398 #endif /* HOSTAPD */
2399
2400         if (wpa_driver_nl80211_capa(drv))
2401                 return -1;
2402
2403         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2404                                drv->addr))
2405                 return -1;
2406
2407         if (nl80211_register_action_frames(drv) < 0) {
2408                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
2409                            "frame processing - ignore for now");
2410                 /*
2411                  * Older kernel versions did not support this, so ignore the
2412                  * error for now. Some functionality may not be available
2413                  * because of this.
2414                  */
2415         }
2416
2417         if (send_rfkill_event) {
2418                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2419                                        drv, drv->ctx);
2420         }
2421
2422         return 0;
2423 }
2424
2425
2426 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2427 {
2428         struct nl_msg *msg;
2429
2430         msg = nlmsg_alloc();
2431         if (!msg)
2432                 return -ENOMEM;
2433
2434         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
2435         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2436
2437         return send_and_recv_msgs(drv, msg, NULL, NULL);
2438  nla_put_failure:
2439         return -ENOBUFS;
2440 }
2441
2442
2443 /**
2444  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2445  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2446  *
2447  * Shut down driver interface and processing of driver events. Free
2448  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2449  */
2450 static void wpa_driver_nl80211_deinit(void *priv)
2451 {
2452         struct i802_bss *bss = priv;
2453         struct wpa_driver_nl80211_data *drv = bss->drv;
2454
2455 #ifdef CONFIG_AP
2456         if (drv->l2)
2457                 l2_packet_deinit(drv->l2);
2458 #endif /* CONFIG_AP */
2459
2460         if (drv->nl_preq.handle)
2461                 wpa_driver_nl80211_probe_req_report(bss, 0);
2462         if (bss->added_if_into_bridge) {
2463                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2464                                     bss->ifname) < 0)
2465                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2466                                    "interface %s from bridge %s: %s",
2467                                    bss->ifname, bss->brname, strerror(errno));
2468         }
2469         if (bss->added_bridge) {
2470                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2471                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2472                                    "bridge %s: %s",
2473                                    bss->brname, strerror(errno));
2474         }
2475
2476         nl80211_remove_monitor_interface(drv);
2477
2478         if (is_ap_interface(drv->nlmode))
2479                 wpa_driver_nl80211_del_beacon(drv);
2480
2481 #ifdef HOSTAPD
2482         if (drv->last_freq_ht) {
2483                 /* Clear HT flags from the driver */
2484                 struct hostapd_freq_params freq;
2485                 os_memset(&freq, 0, sizeof(freq));
2486                 freq.freq = drv->last_freq;
2487                 i802_set_freq(priv, &freq);
2488         }
2489
2490         if (drv->eapol_sock >= 0) {
2491                 eloop_unregister_read_sock(drv->eapol_sock);
2492                 close(drv->eapol_sock);
2493         }
2494
2495         if (drv->if_indices != drv->default_if_indices)
2496                 os_free(drv->if_indices);
2497 #endif /* HOSTAPD */
2498
2499         if (drv->disable_11b_rates) {
2500                 drv->disable_11b_rates = 0;
2501                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2502         }
2503
2504         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2505                                IF_OPER_UP);
2506         rfkill_deinit(drv->rfkill);
2507
2508         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2509
2510         (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
2511         wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
2512
2513         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_event.handle));
2514         nl_destroy_handles(&drv->nl_event);
2515
2516         os_free(drv->filter_ssids);
2517
2518         if (drv->in_interface_list)
2519                 dl_list_del(&drv->list);
2520
2521         os_free(drv);
2522 }
2523
2524
2525 /**
2526  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2527  * @eloop_ctx: Driver private data
2528  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2529  *
2530  * This function can be used as registered timeout when starting a scan to
2531  * generate a scan completed event if the driver does not report this.
2532  */
2533 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2534 {
2535         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2536         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2537                 wpa_driver_nl80211_set_mode(&drv->first_bss,
2538                                             drv->ap_scan_as_station);
2539                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2540         }
2541         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2542         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2543 }
2544
2545
2546 /**
2547  * wpa_driver_nl80211_scan - Request the driver to initiate scan
2548  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2549  * @params: Scan parameters
2550  * Returns: 0 on success, -1 on failure
2551  */
2552 static int wpa_driver_nl80211_scan(void *priv,
2553                                    struct wpa_driver_scan_params *params)
2554 {
2555         struct i802_bss *bss = priv;
2556         struct wpa_driver_nl80211_data *drv = bss->drv;
2557         int ret = 0, timeout;
2558         struct nl_msg *msg, *ssids, *freqs, *rates;
2559         size_t i;
2560
2561         msg = nlmsg_alloc();
2562         ssids = nlmsg_alloc();
2563         freqs = nlmsg_alloc();
2564         rates = nlmsg_alloc();
2565         if (!msg || !ssids || !freqs || !rates) {
2566                 nlmsg_free(msg);
2567                 nlmsg_free(ssids);
2568                 nlmsg_free(freqs);
2569                 nlmsg_free(rates);
2570                 return -1;
2571         }
2572
2573         os_free(drv->filter_ssids);
2574         drv->filter_ssids = params->filter_ssids;
2575         params->filter_ssids = NULL;
2576         drv->num_filter_ssids = params->num_filter_ssids;
2577
2578         nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN);
2579
2580         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2581
2582         for (i = 0; i < params->num_ssids; i++) {
2583                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2584                                   params->ssids[i].ssid,
2585                                   params->ssids[i].ssid_len);
2586                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2587                         params->ssids[i].ssid);
2588         }
2589         if (params->num_ssids)
2590                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2591
2592         if (params->extra_ies) {
2593                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2594                                   params->extra_ies, params->extra_ies_len);
2595                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2596                         params->extra_ies);
2597         }
2598
2599         if (params->freqs) {
2600                 for (i = 0; params->freqs[i]; i++) {
2601                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2602                                    "MHz", params->freqs[i]);
2603                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2604                 }
2605                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2606         }
2607
2608         if (params->p2p_probe) {
2609                 /*
2610                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2611                  * by masking out everything else apart from the OFDM rates 6,
2612                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2613                  * rates are left enabled.
2614                  */
2615                 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
2616                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
2617                 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates);
2618
2619                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
2620         }
2621
2622         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2623         msg = NULL;
2624         if (ret) {
2625                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2626                            "(%s)", ret, strerror(-ret));
2627 #ifdef HOSTAPD
2628                 if (is_ap_interface(drv->nlmode)) {
2629                         /*
2630                          * mac80211 does not allow scan requests in AP mode, so
2631                          * try to do this in station mode.
2632                          */
2633                         if (wpa_driver_nl80211_set_mode(
2634                                     bss, NL80211_IFTYPE_STATION))
2635                                 goto nla_put_failure;
2636
2637                         if (wpa_driver_nl80211_scan(drv, params)) {
2638                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2639                                 goto nla_put_failure;
2640                         }
2641
2642                         /* Restore AP mode when processing scan results */
2643                         drv->ap_scan_as_station = drv->nlmode;
2644                         ret = 0;
2645                 } else
2646                         goto nla_put_failure;
2647 #else /* HOSTAPD */
2648                 goto nla_put_failure;
2649 #endif /* HOSTAPD */
2650         }
2651
2652         /* Not all drivers generate "scan completed" wireless event, so try to
2653          * read results after a timeout. */
2654         timeout = 10;
2655         if (drv->scan_complete_events) {
2656                 /*
2657                  * The driver seems to deliver events to notify when scan is
2658                  * complete, so use longer timeout to avoid race conditions
2659                  * with scanning and following association request.
2660                  */
2661                 timeout = 30;
2662         }
2663         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2664                    "seconds", ret, timeout);
2665         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2666         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2667                                drv, drv->ctx);
2668
2669 nla_put_failure:
2670         nlmsg_free(ssids);
2671         nlmsg_free(msg);
2672         nlmsg_free(freqs);
2673         nlmsg_free(rates);
2674         return ret;
2675 }
2676
2677
2678 /**
2679  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2680  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2681  * @params: Scan parameters
2682  * @interval: Interval between scan cycles in milliseconds
2683  * Returns: 0 on success, -1 on failure or if not supported
2684  */
2685 static int wpa_driver_nl80211_sched_scan(void *priv,
2686                                          struct wpa_driver_scan_params *params,
2687                                          u32 interval)
2688 {
2689         struct i802_bss *bss = priv;
2690         struct wpa_driver_nl80211_data *drv = bss->drv;
2691         int ret = 0;
2692         struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets;
2693         size_t i;
2694
2695         msg = nlmsg_alloc();
2696         ssids = nlmsg_alloc();
2697         freqs = nlmsg_alloc();
2698         if (!msg || !ssids || !freqs) {
2699                 nlmsg_free(msg);
2700                 nlmsg_free(ssids);
2701                 nlmsg_free(freqs);
2702                 return -1;
2703         }
2704
2705         os_free(drv->filter_ssids);
2706         drv->filter_ssids = params->filter_ssids;
2707         params->filter_ssids = NULL;
2708         drv->num_filter_ssids = params->num_filter_ssids;
2709
2710         nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN);
2711
2712         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2713
2714         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
2715
2716         if (drv->num_filter_ssids) {
2717                 match_sets = nlmsg_alloc();
2718
2719                 for (i = 0; i < drv->num_filter_ssids; i++) {
2720                         wpa_hexdump_ascii(MSG_MSGDUMP,
2721                                           "nl80211: Sched scan filter SSID",
2722                                           drv->filter_ssids[i].ssid,
2723                                           drv->filter_ssids[i].ssid_len);
2724
2725                         match_set_ssid = nlmsg_alloc();
2726                         nla_put(match_set_ssid,
2727                                 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2728                                 drv->filter_ssids[i].ssid_len,
2729                                 drv->filter_ssids[i].ssid);
2730
2731                         nla_put_nested(match_sets, i + 1, match_set_ssid);
2732
2733                         nlmsg_free(match_set_ssid);
2734                 }
2735
2736                 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
2737                                match_sets);
2738                 nlmsg_free(match_sets);
2739         }
2740
2741         for (i = 0; i < params->num_ssids; i++) {
2742                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID",
2743                                   params->ssids[i].ssid,
2744                                   params->ssids[i].ssid_len);
2745                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2746                         params->ssids[i].ssid);
2747         }
2748         if (params->num_ssids)
2749                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2750
2751         if (params->extra_ies) {
2752                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs",
2753                                   params->extra_ies, params->extra_ies_len);
2754                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2755                         params->extra_ies);
2756         }
2757
2758         if (params->freqs) {
2759                 for (i = 0; params->freqs[i]; i++) {
2760                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2761                                    "MHz", params->freqs[i]);
2762                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2763                 }
2764                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2765         }
2766
2767         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2768
2769         /* TODO: if we get an error here, we should fall back to normal scan */
2770
2771         msg = NULL;
2772         if (ret) {
2773                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2774                            "ret=%d (%s)", ret, strerror(-ret));
2775                 goto nla_put_failure;
2776         }
2777
2778         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2779                    "scan interval %d msec", ret, interval);
2780
2781 nla_put_failure:
2782         nlmsg_free(ssids);
2783         nlmsg_free(msg);
2784         nlmsg_free(freqs);
2785         return ret;
2786 }
2787
2788
2789 /**
2790  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2791  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2792  * Returns: 0 on success, -1 on failure or if not supported
2793  */
2794 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2795 {
2796         struct i802_bss *bss = priv;
2797         struct wpa_driver_nl80211_data *drv = bss->drv;
2798         int ret = 0;
2799         struct nl_msg *msg;
2800
2801         msg = nlmsg_alloc();
2802         if (!msg)
2803                 return -1;
2804
2805         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
2806
2807         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2808
2809         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2810         msg = NULL;
2811         if (ret) {
2812                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
2813                            "ret=%d (%s)", ret, strerror(-ret));
2814                 goto nla_put_failure;
2815         }
2816
2817         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
2818
2819 nla_put_failure:
2820         nlmsg_free(msg);
2821         return ret;
2822 }
2823
2824
2825 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2826 {
2827         const u8 *end, *pos;
2828
2829         if (ies == NULL)
2830                 return NULL;
2831
2832         pos = ies;
2833         end = ies + ies_len;
2834
2835         while (pos + 1 < end) {
2836                 if (pos + 2 + pos[1] > end)
2837                         break;
2838                 if (pos[0] == ie)
2839                         return pos;
2840                 pos += 2 + pos[1];
2841         }
2842
2843         return NULL;
2844 }
2845
2846
2847 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2848                                  const u8 *ie, size_t ie_len)
2849 {
2850         const u8 *ssid;
2851         size_t i;
2852
2853         if (drv->filter_ssids == NULL)
2854                 return 0;
2855
2856         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2857         if (ssid == NULL)
2858                 return 1;
2859
2860         for (i = 0; i < drv->num_filter_ssids; i++) {
2861                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2862                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2863                     0)
2864                         return 0;
2865         }
2866
2867         return 1;
2868 }
2869
2870
2871 static int bss_info_handler(struct nl_msg *msg, void *arg)
2872 {
2873         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2874         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2875         struct nlattr *bss[NL80211_BSS_MAX + 1];
2876         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2877                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2878                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2879                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2880                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2881                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2882                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2883                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2884                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2885                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2886                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2887                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2888         };
2889         struct nl80211_bss_info_arg *_arg = arg;
2890         struct wpa_scan_results *res = _arg->res;
2891         struct wpa_scan_res **tmp;
2892         struct wpa_scan_res *r;
2893         const u8 *ie, *beacon_ie;
2894         size_t ie_len, beacon_ie_len;
2895         u8 *pos;
2896         size_t i;
2897
2898         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2899                   genlmsg_attrlen(gnlh, 0), NULL);
2900         if (!tb[NL80211_ATTR_BSS])
2901                 return NL_SKIP;
2902         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2903                              bss_policy))
2904                 return NL_SKIP;
2905         if (bss[NL80211_BSS_STATUS]) {
2906                 enum nl80211_bss_status status;
2907                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2908                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2909                     bss[NL80211_BSS_FREQUENCY]) {
2910                         _arg->assoc_freq =
2911                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2912                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2913                                    _arg->assoc_freq);
2914                 }
2915                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2916                     bss[NL80211_BSS_BSSID]) {
2917                         os_memcpy(_arg->assoc_bssid,
2918                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2919                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2920                                    MACSTR, MAC2STR(_arg->assoc_bssid));
2921                 }
2922         }
2923         if (!res)
2924                 return NL_SKIP;
2925         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2926                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2927                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2928         } else {
2929                 ie = NULL;
2930                 ie_len = 0;
2931         }
2932         if (bss[NL80211_BSS_BEACON_IES]) {
2933                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2934                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2935         } else {
2936                 beacon_ie = NULL;
2937                 beacon_ie_len = 0;
2938         }
2939
2940         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2941                                   ie ? ie_len : beacon_ie_len))
2942                 return NL_SKIP;
2943
2944         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2945         if (r == NULL)
2946                 return NL_SKIP;
2947         if (bss[NL80211_BSS_BSSID])
2948                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2949                           ETH_ALEN);
2950         if (bss[NL80211_BSS_FREQUENCY])
2951                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2952         if (bss[NL80211_BSS_BEACON_INTERVAL])
2953                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2954         if (bss[NL80211_BSS_CAPABILITY])
2955                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2956         r->flags |= WPA_SCAN_NOISE_INVALID;
2957         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2958                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2959                 r->level /= 100; /* mBm to dBm */
2960                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2961         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2962                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2963                 r->flags |= WPA_SCAN_LEVEL_INVALID;
2964         } else
2965                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2966         if (bss[NL80211_BSS_TSF])
2967                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2968         if (bss[NL80211_BSS_SEEN_MS_AGO])
2969                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2970         r->ie_len = ie_len;
2971         pos = (u8 *) (r + 1);
2972         if (ie) {
2973                 os_memcpy(pos, ie, ie_len);
2974                 pos += ie_len;
2975         }
2976         r->beacon_ie_len = beacon_ie_len;
2977         if (beacon_ie)
2978                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2979
2980         if (bss[NL80211_BSS_STATUS]) {
2981                 enum nl80211_bss_status status;
2982                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2983                 switch (status) {
2984                 case NL80211_BSS_STATUS_AUTHENTICATED:
2985                         r->flags |= WPA_SCAN_AUTHENTICATED;
2986                         break;
2987                 case NL80211_BSS_STATUS_ASSOCIATED:
2988                         r->flags |= WPA_SCAN_ASSOCIATED;
2989                         break;
2990                 default:
2991                         break;
2992                 }
2993         }
2994
2995         /*
2996          * cfg80211 maintains separate BSS table entries for APs if the same
2997          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
2998          * not use frequency as a separate key in the BSS table, so filter out
2999          * duplicated entries. Prefer associated BSS entry in such a case in
3000          * order to get the correct frequency into the BSS table.
3001          */
3002         for (i = 0; i < res->num; i++) {
3003                 const u8 *s1, *s2;
3004                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3005                         continue;
3006
3007                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3008                                     res->res[i]->ie_len, WLAN_EID_SSID);
3009                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3010                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3011                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
3012                         continue;
3013
3014                 /* Same BSSID,SSID was already included in scan results */
3015                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3016                            "for " MACSTR, MAC2STR(r->bssid));
3017
3018                 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3019                     !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3020                         os_free(res->res[i]);
3021                         res->res[i] = r;
3022                 } else
3023                         os_free(r);
3024                 return NL_SKIP;
3025         }
3026
3027         tmp = os_realloc(res->res,
3028                          (res->num + 1) * sizeof(struct wpa_scan_res *));
3029         if (tmp == NULL) {
3030                 os_free(r);
3031                 return NL_SKIP;
3032         }
3033         tmp[res->num++] = r;
3034         res->res = tmp;
3035
3036         return NL_SKIP;
3037 }
3038
3039
3040 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
3041                                  const u8 *addr)
3042 {
3043         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
3044                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
3045                            "mismatch (" MACSTR ")", MAC2STR(addr));
3046                 wpa_driver_nl80211_mlme(drv, addr,
3047                                         NL80211_CMD_DEAUTHENTICATE,
3048                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
3049         }
3050 }
3051
3052
3053 static void wpa_driver_nl80211_check_bss_status(
3054         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
3055 {
3056         size_t i;
3057
3058         for (i = 0; i < res->num; i++) {
3059                 struct wpa_scan_res *r = res->res[i];
3060                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
3061                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3062                                    "indicates BSS status with " MACSTR
3063                                    " as authenticated",
3064                                    MAC2STR(r->bssid));
3065                         if (is_sta_interface(drv->nlmode) &&
3066                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
3067                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
3068                             0) {
3069                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
3070                                            " in local state (auth=" MACSTR
3071                                            " assoc=" MACSTR ")",
3072                                            MAC2STR(drv->auth_bssid),
3073                                            MAC2STR(drv->bssid));
3074                                 clear_state_mismatch(drv, r->bssid);
3075                         }
3076                 }
3077
3078                 if (r->flags & WPA_SCAN_ASSOCIATED) {
3079                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3080                                    "indicate BSS status with " MACSTR
3081                                    " as associated",
3082                                    MAC2STR(r->bssid));
3083                         if (is_sta_interface(drv->nlmode) &&
3084                             !drv->associated) {
3085                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3086                                            "(not associated) does not match "
3087                                            "with BSS state");
3088                                 clear_state_mismatch(drv, r->bssid);
3089                         } else if (is_sta_interface(drv->nlmode) &&
3090                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3091                                    0) {
3092                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3093                                            "(associated with " MACSTR ") does "
3094                                            "not match with BSS state",
3095                                            MAC2STR(drv->bssid));
3096                                 clear_state_mismatch(drv, r->bssid);
3097                                 clear_state_mismatch(drv, drv->bssid);
3098                         }
3099                 }
3100         }
3101 }
3102
3103
3104 static struct wpa_scan_results *
3105 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3106 {
3107         struct nl_msg *msg;
3108         struct wpa_scan_results *res;
3109         int ret;
3110         struct nl80211_bss_info_arg arg;
3111
3112         res = os_zalloc(sizeof(*res));
3113         if (res == NULL)
3114                 return NULL;
3115         msg = nlmsg_alloc();
3116         if (!msg)
3117                 goto nla_put_failure;
3118
3119         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3120         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3121
3122         arg.drv = drv;
3123         arg.res = res;
3124         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3125         msg = NULL;
3126         if (ret == 0) {
3127                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
3128                            (unsigned long) res->num);
3129                 return res;
3130         }
3131         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3132                    "(%s)", ret, strerror(-ret));
3133 nla_put_failure:
3134         nlmsg_free(msg);
3135         wpa_scan_results_free(res);
3136         return NULL;
3137 }
3138
3139
3140 /**
3141  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3142  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3143  * Returns: Scan results on success, -1 on failure
3144  */
3145 static struct wpa_scan_results *
3146 wpa_driver_nl80211_get_scan_results(void *priv)
3147 {
3148         struct i802_bss *bss = priv;
3149         struct wpa_driver_nl80211_data *drv = bss->drv;
3150         struct wpa_scan_results *res;
3151
3152         res = nl80211_get_scan_results(drv);
3153         if (res)
3154                 wpa_driver_nl80211_check_bss_status(drv, res);
3155         return res;
3156 }
3157
3158
3159 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3160 {
3161         struct wpa_scan_results *res;
3162         size_t i;
3163
3164         res = nl80211_get_scan_results(drv);
3165         if (res == NULL) {
3166                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3167                 return;
3168         }
3169
3170         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3171         for (i = 0; i < res->num; i++) {
3172                 struct wpa_scan_res *r = res->res[i];
3173                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3174                            (int) i, (int) res->num, MAC2STR(r->bssid),
3175                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3176                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3177         }
3178
3179         wpa_scan_results_free(res);
3180 }
3181
3182
3183 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
3184                                       enum wpa_alg alg, const u8 *addr,
3185                                       int key_idx, int set_tx,
3186                                       const u8 *seq, size_t seq_len,
3187                                       const u8 *key, size_t key_len)
3188 {
3189         struct i802_bss *bss = priv;
3190         struct wpa_driver_nl80211_data *drv = bss->drv;
3191         int ifindex = if_nametoindex(ifname);
3192         struct nl_msg *msg;
3193         int ret;
3194
3195         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
3196                    "set_tx=%d seq_len=%lu key_len=%lu",
3197                    __func__, ifindex, alg, addr, key_idx, set_tx,
3198                    (unsigned long) seq_len, (unsigned long) key_len);
3199 #ifdef CONFIG_TDLS
3200         if (key_idx == -1)
3201                 key_idx = 0;
3202 #endif /* CONFIG_TDLS */
3203
3204         msg = nlmsg_alloc();
3205         if (!msg)
3206                 return -ENOMEM;
3207
3208         if (alg == WPA_ALG_NONE) {
3209                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3210         } else {
3211                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3212                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3213                 switch (alg) {
3214                 case WPA_ALG_WEP:
3215                         if (key_len == 5)
3216                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3217                                             WLAN_CIPHER_SUITE_WEP40);
3218                         else
3219                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3220                                             WLAN_CIPHER_SUITE_WEP104);
3221                         break;
3222                 case WPA_ALG_TKIP:
3223                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3224                                     WLAN_CIPHER_SUITE_TKIP);
3225                         break;
3226                 case WPA_ALG_CCMP:
3227                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3228                                     WLAN_CIPHER_SUITE_CCMP);
3229                         break;
3230                 case WPA_ALG_IGTK:
3231                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3232                                     WLAN_CIPHER_SUITE_AES_CMAC);
3233                         break;
3234                 default:
3235                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
3236                                    "algorithm %d", __func__, alg);
3237                         nlmsg_free(msg);
3238                         return -1;
3239                 }
3240         }
3241
3242         if (seq && seq_len)
3243                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3244
3245         if (addr && !is_broadcast_ether_addr(addr)) {
3246                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
3247                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3248
3249                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3250                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
3251                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3252                                     NL80211_KEYTYPE_GROUP);
3253                 }
3254         } else if (addr && is_broadcast_ether_addr(addr)) {
3255                 struct nl_msg *types;
3256                 int err;
3257                 wpa_printf(MSG_DEBUG, "   broadcast key");
3258                 types = nlmsg_alloc();
3259                 if (!types)
3260                         goto nla_put_failure;
3261                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3262                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3263                                      types);
3264                 nlmsg_free(types);
3265                 if (err)
3266                         goto nla_put_failure;
3267         }
3268         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3269         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3270
3271         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3272         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3273                 ret = 0;
3274         if (ret)
3275                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3276                            ret, strerror(-ret));
3277
3278         /*
3279          * If we failed or don't need to set the default TX key (below),
3280          * we're done here.
3281          */
3282         if (ret || !set_tx || alg == WPA_ALG_NONE)
3283                 return ret;
3284         if (is_ap_interface(drv->nlmode) && addr &&
3285             !is_broadcast_ether_addr(addr))
3286                 return ret;
3287
3288         msg = nlmsg_alloc();
3289         if (!msg)
3290                 return -ENOMEM;
3291
3292         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
3293         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3294         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3295         if (alg == WPA_ALG_IGTK)
3296                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
3297         else
3298                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3299         if (addr && is_broadcast_ether_addr(addr)) {
3300                 struct nl_msg *types;
3301                 int err;
3302                 types = nlmsg_alloc();
3303                 if (!types)
3304                         goto nla_put_failure;
3305                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3306                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3307                                      types);
3308                 nlmsg_free(types);
3309                 if (err)
3310                         goto nla_put_failure;
3311         } else if (addr) {
3312                 struct nl_msg *types;
3313                 int err;
3314                 types = nlmsg_alloc();
3315                 if (!types)
3316                         goto nla_put_failure;
3317                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
3318                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
3319                                      types);
3320                 nlmsg_free(types);
3321                 if (err)
3322                         goto nla_put_failure;
3323         }
3324
3325         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3326         if (ret == -ENOENT)
3327                 ret = 0;
3328         if (ret)
3329                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3330                            "err=%d %s)", ret, strerror(-ret));
3331         return ret;
3332
3333 nla_put_failure:
3334         return -ENOBUFS;
3335 }
3336
3337
3338 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3339                       int key_idx, int defkey,
3340                       const u8 *seq, size_t seq_len,
3341                       const u8 *key, size_t key_len)
3342 {
3343         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3344         if (!key_attr)
3345                 return -1;
3346
3347         if (defkey && alg == WPA_ALG_IGTK)
3348                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
3349         else if (defkey)
3350                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3351
3352         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
3353
3354         switch (alg) {
3355         case WPA_ALG_WEP:
3356                 if (key_len == 5)
3357                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3358                                     WLAN_CIPHER_SUITE_WEP40);
3359                 else
3360                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3361                                     WLAN_CIPHER_SUITE_WEP104);
3362                 break;
3363         case WPA_ALG_TKIP:
3364                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
3365                 break;
3366         case WPA_ALG_CCMP:
3367                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
3368                 break;
3369         case WPA_ALG_IGTK:
3370                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3371                             WLAN_CIPHER_SUITE_AES_CMAC);
3372                 break;
3373         default:
3374                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
3375                            "algorithm %d", __func__, alg);
3376                 return -1;
3377         }
3378
3379         if (seq && seq_len)
3380                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
3381
3382         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
3383
3384         nla_nest_end(msg, key_attr);
3385
3386         return 0;
3387  nla_put_failure:
3388         return -1;
3389 }
3390
3391
3392 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3393                                  struct nl_msg *msg)
3394 {
3395         int i, privacy = 0;
3396         struct nlattr *nl_keys, *nl_key;
3397
3398         for (i = 0; i < 4; i++) {
3399                 if (!params->wep_key[i])
3400                         continue;
3401                 privacy = 1;
3402                 break;
3403         }
3404         if (params->wps == WPS_MODE_PRIVACY)
3405                 privacy = 1;
3406         if (params->pairwise_suite &&
3407             params->pairwise_suite != WPA_CIPHER_NONE)
3408                 privacy = 1;
3409
3410         if (!privacy)
3411                 return 0;
3412
3413         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
3414
3415         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3416         if (!nl_keys)
3417                 goto nla_put_failure;
3418
3419         for (i = 0; i < 4; i++) {
3420                 if (!params->wep_key[i])
3421                         continue;
3422
3423                 nl_key = nla_nest_start(msg, i);
3424                 if (!nl_key)
3425                         goto nla_put_failure;
3426
3427                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3428                         params->wep_key[i]);
3429                 if (params->wep_key_len[i] == 5)
3430                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3431                                     WLAN_CIPHER_SUITE_WEP40);
3432                 else
3433                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3434                                     WLAN_CIPHER_SUITE_WEP104);
3435
3436                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
3437
3438                 if (i == params->wep_tx_keyidx)
3439                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3440
3441                 nla_nest_end(msg, nl_key);
3442         }
3443         nla_nest_end(msg, nl_keys);
3444
3445         return 0;
3446
3447 nla_put_failure:
3448         return -ENOBUFS;
3449 }
3450
3451
3452 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3453                                    const u8 *addr, int cmd, u16 reason_code,
3454                                    int local_state_change)
3455 {
3456         int ret = -1;
3457         struct nl_msg *msg;
3458
3459         msg = nlmsg_alloc();
3460         if (!msg)
3461                 return -1;
3462
3463         nl80211_cmd(drv, msg, 0, cmd);
3464
3465         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3466         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
3467         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3468         if (local_state_change)
3469                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3470
3471         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3472         msg = NULL;
3473         if (ret) {
3474                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3475                            "(%s)", ret, strerror(-ret));
3476                 goto nla_put_failure;
3477         }
3478         ret = 0;
3479
3480 nla_put_failure:
3481         nlmsg_free(msg);
3482         return ret;
3483 }
3484
3485
3486 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3487                                          const u8 *addr, int reason_code)
3488 {
3489         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3490                    __func__, MAC2STR(addr), reason_code);
3491         drv->associated = 0;
3492         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
3493                                        reason_code, 0);
3494 }
3495
3496
3497 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
3498                                              int reason_code)
3499 {
3500         struct i802_bss *bss = priv;
3501         struct wpa_driver_nl80211_data *drv = bss->drv;
3502         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3503                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
3504         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3505                    __func__, MAC2STR(addr), reason_code);
3506         drv->associated = 0;
3507         if (drv->nlmode == NL80211_IFTYPE_ADHOC)
3508                 return nl80211_leave_ibss(drv);
3509         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3510                                        reason_code, 0);
3511 }
3512
3513
3514 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
3515                                            int reason_code)
3516 {
3517         struct i802_bss *bss = priv;
3518         struct wpa_driver_nl80211_data *drv = bss->drv;
3519         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3520                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
3521         wpa_printf(MSG_DEBUG, "%s", __func__);
3522         drv->associated = 0;
3523         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
3524                                        reason_code, 0);
3525 }
3526
3527
3528 static int wpa_driver_nl80211_authenticate(
3529         void *priv, struct wpa_driver_auth_params *params)
3530 {
3531         struct i802_bss *bss = priv;
3532         struct wpa_driver_nl80211_data *drv = bss->drv;
3533         int ret = -1, i;
3534         struct nl_msg *msg;
3535         enum nl80211_auth_type type;
3536         enum nl80211_iftype nlmode;
3537         int count = 0;
3538
3539         drv->associated = 0;
3540         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3541         /* FIX: IBSS mode */
3542         nlmode = params->p2p ?
3543                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3544         if (drv->nlmode != nlmode &&
3545             wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
3546                 return -1;
3547
3548 retry:
3549         msg = nlmsg_alloc();
3550         if (!msg)
3551                 return -1;
3552
3553         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3554                    drv->ifindex);
3555
3556         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3557
3558         for (i = 0; i < 4; i++) {
3559                 if (!params->wep_key[i])
3560                         continue;
3561                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
3562                                            NULL, i,
3563                                            i == params->wep_tx_keyidx, NULL, 0,
3564                                            params->wep_key[i],
3565                                            params->wep_key_len[i]);
3566                 if (params->wep_tx_keyidx != i)
3567                         continue;
3568                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3569                                params->wep_key[i], params->wep_key_len[i])) {
3570                         nlmsg_free(msg);
3571                         return -1;
3572                 }
3573         }
3574
3575         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3576         if (params->bssid) {
3577                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3578                            MAC2STR(params->bssid));
3579                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3580         }
3581         if (params->freq) {
3582                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3583                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3584         }
3585         if (params->ssid) {
3586                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3587                                   params->ssid, params->ssid_len);
3588                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3589                         params->ssid);
3590         }
3591         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3592         if (params->ie)
3593                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3594         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3595                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3596         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3597                 type = NL80211_AUTHTYPE_SHARED_KEY;
3598         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3599                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3600         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3601                 type = NL80211_AUTHTYPE_FT;
3602         else
3603                 goto nla_put_failure;
3604         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3605         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3606         if (params->local_state_change) {
3607                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3608                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3609         }
3610
3611         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3612         msg = NULL;
3613         if (ret) {
3614                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3615                            "(%s)", ret, strerror(-ret));
3616                 count++;
3617                 if (ret == -EALREADY && count == 1 && params->bssid &&
3618                     !params->local_state_change) {
3619                         /*
3620                          * mac80211 does not currently accept new
3621                          * authentication if we are already authenticated. As a
3622                          * workaround, force deauthentication and try again.
3623                          */
3624                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3625                                    "after forced deauthentication");
3626                         wpa_driver_nl80211_deauthenticate(
3627                                 bss, params->bssid,
3628                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3629                         nlmsg_free(msg);
3630                         goto retry;
3631                 }
3632                 goto nla_put_failure;
3633         }
3634         ret = 0;
3635         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3636                    "successfully");
3637
3638 nla_put_failure:
3639         nlmsg_free(msg);
3640         return ret;
3641 }
3642
3643
3644 struct phy_info_arg {
3645         u16 *num_modes;
3646         struct hostapd_hw_modes *modes;
3647 };
3648
3649 static int phy_info_handler(struct nl_msg *msg, void *arg)
3650 {
3651         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3652         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3653         struct phy_info_arg *phy_info = arg;
3654
3655         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
3656
3657         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
3658         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
3659                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
3660                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
3661                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
3662                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
3663                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
3664                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
3665         };
3666
3667         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
3668         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
3669                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
3670                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
3671         };
3672
3673         struct nlattr *nl_band;
3674         struct nlattr *nl_freq;
3675         struct nlattr *nl_rate;
3676         int rem_band, rem_freq, rem_rate;
3677         struct hostapd_hw_modes *mode;
3678         int idx, mode_is_set;
3679
3680         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3681                   genlmsg_attrlen(gnlh, 0), NULL);
3682
3683         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
3684                 return NL_SKIP;
3685
3686         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
3687                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
3688                 if (!mode)
3689                         return NL_SKIP;
3690                 phy_info->modes = mode;
3691
3692                 mode_is_set = 0;
3693
3694                 mode = &phy_info->modes[*(phy_info->num_modes)];
3695                 memset(mode, 0, sizeof(*mode));
3696                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
3697                 *(phy_info->num_modes) += 1;
3698
3699                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
3700                           nla_len(nl_band), NULL);
3701
3702                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
3703                         mode->ht_capab = nla_get_u16(
3704                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
3705                 }
3706
3707                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
3708                         mode->a_mpdu_params |= nla_get_u8(
3709                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
3710                                 0x03;
3711                 }
3712
3713                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
3714                         mode->a_mpdu_params |= nla_get_u8(
3715                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
3716                                 2;
3717                 }
3718
3719                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
3720                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
3721                         u8 *mcs;
3722                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
3723                         os_memcpy(mode->mcs_set, mcs, 16);
3724                 }
3725
3726                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3727                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3728                                   nla_len(nl_freq), freq_policy);
3729                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3730                                 continue;
3731                         mode->num_channels++;
3732                 }
3733
3734                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
3735                 if (!mode->channels)
3736                         return NL_SKIP;
3737
3738                 idx = 0;
3739
3740                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
3741                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
3742                                   nla_len(nl_freq), freq_policy);
3743                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
3744                                 continue;
3745
3746                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
3747                         mode->channels[idx].flag = 0;
3748
3749                         if (!mode_is_set) {
3750                                 /* crude heuristic */
3751                                 if (mode->channels[idx].freq < 4000)
3752                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
3753                                 else
3754                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
3755                                 mode_is_set = 1;
3756                         }
3757
3758                         /* crude heuristic */
3759                         if (mode->channels[idx].freq < 4000)
3760                                 if (mode->channels[idx].freq == 2484)
3761                                         mode->channels[idx].chan = 14;
3762                                 else
3763                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
3764                         else
3765                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
3766
3767                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3768                                 mode->channels[idx].flag |=
3769                                         HOSTAPD_CHAN_DISABLED;
3770                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
3771                                 mode->channels[idx].flag |=
3772                                         HOSTAPD_CHAN_PASSIVE_SCAN;
3773                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
3774                                 mode->channels[idx].flag |=
3775                                         HOSTAPD_CHAN_NO_IBSS;
3776                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
3777                                 mode->channels[idx].flag |=
3778                                         HOSTAPD_CHAN_RADAR;
3779
3780                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
3781                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
3782                                 mode->channels[idx].max_tx_power =
3783                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
3784
3785                         idx++;
3786                 }
3787
3788                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3789                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3790                                   nla_len(nl_rate), rate_policy);
3791                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3792                                 continue;
3793                         mode->num_rates++;
3794                 }
3795
3796                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
3797                 if (!mode->rates)
3798                         return NL_SKIP;
3799
3800                 idx = 0;
3801
3802                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3803                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3804                                   nla_len(nl_rate), rate_policy);
3805                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3806                                 continue;
3807                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
3808
3809                         /* crude heuristic */
3810                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
3811                             mode->rates[idx] > 200)
3812                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
3813
3814                         idx++;
3815                 }
3816         }
3817
3818         return NL_SKIP;
3819 }
3820
3821 static struct hostapd_hw_modes *
3822 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3823 {
3824         u16 m;
3825         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3826         int i, mode11g_idx = -1;
3827
3828         /* If only 802.11g mode is included, use it to construct matching
3829          * 802.11b mode data. */
3830
3831         for (m = 0; m < *num_modes; m++) {
3832                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3833                         return modes; /* 802.11b already included */
3834                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3835                         mode11g_idx = m;
3836         }
3837
3838         if (mode11g_idx < 0)
3839                 return modes; /* 2.4 GHz band not supported at all */
3840
3841         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3842         if (nmodes == NULL)
3843                 return modes; /* Could not add 802.11b mode */
3844
3845         mode = &nmodes[*num_modes];
3846         os_memset(mode, 0, sizeof(*mode));
3847         (*num_modes)++;
3848         modes = nmodes;
3849
3850         mode->mode = HOSTAPD_MODE_IEEE80211B;
3851
3852         mode11g = &modes[mode11g_idx];
3853         mode->num_channels = mode11g->num_channels;
3854         mode->channels = os_malloc(mode11g->num_channels *
3855                                    sizeof(struct hostapd_channel_data));
3856         if (mode->channels == NULL) {
3857                 (*num_modes)--;
3858                 return modes; /* Could not add 802.11b mode */
3859         }
3860         os_memcpy(mode->channels, mode11g->channels,
3861                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
3862
3863         mode->num_rates = 0;
3864         mode->rates = os_malloc(4 * sizeof(int));
3865         if (mode->rates == NULL) {
3866                 os_free(mode->channels);
3867                 (*num_modes)--;
3868                 return modes; /* Could not add 802.11b mode */
3869         }
3870
3871         for (i = 0; i < mode11g->num_rates; i++) {
3872                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3873                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3874                         continue;
3875                 mode->rates[mode->num_rates] = mode11g->rates[i];
3876                 mode->num_rates++;
3877                 if (mode->num_rates == 4)
3878                         break;
3879         }
3880
3881         if (mode->num_rates == 0) {
3882                 os_free(mode->channels);
3883                 os_free(mode->rates);
3884                 (*num_modes)--;
3885                 return modes; /* No 802.11b rates */
3886         }
3887
3888         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3889                    "information");
3890
3891         return modes;
3892 }
3893
3894
3895 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
3896                                   int end)
3897 {
3898         int c;
3899
3900         for (c = 0; c < mode->num_channels; c++) {
3901                 struct hostapd_channel_data *chan = &mode->channels[c];
3902                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
3903                         chan->flag |= HOSTAPD_CHAN_HT40;
3904         }
3905 }
3906
3907
3908 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
3909                                       int end)
3910 {
3911         int c;
3912
3913         for (c = 0; c < mode->num_channels; c++) {
3914                 struct hostapd_channel_data *chan = &mode->channels[c];
3915                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
3916                         continue;
3917                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
3918                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
3919                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
3920                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
3921         }
3922 }
3923
3924
3925 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
3926                                   struct phy_info_arg *results)
3927 {
3928         u32 start, end, max_bw;
3929         u16 m;
3930
3931         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
3932             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
3933             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
3934                 return;
3935
3936         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
3937         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
3938         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
3939
3940         wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
3941                    start, end, max_bw);
3942         if (max_bw < 40)
3943                 return;
3944
3945         for (m = 0; m < *results->num_modes; m++) {
3946                 if (!(results->modes[m].ht_capab &
3947                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
3948                         continue;
3949                 nl80211_set_ht40_mode(&results->modes[m], start, end);
3950         }
3951 }
3952
3953
3954 static void nl80211_reg_rule_sec(struct nlattr *tb[],
3955                                  struct phy_info_arg *results)
3956 {
3957         u32 start, end, max_bw;
3958         u16 m;
3959
3960         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
3961             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
3962             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
3963                 return;
3964
3965         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
3966         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
3967         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
3968
3969         if (max_bw < 20)
3970                 return;
3971
3972         for (m = 0; m < *results->num_modes; m++) {
3973                 if (!(results->modes[m].ht_capab &
3974                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
3975                         continue;
3976                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
3977         }
3978 }
3979
3980
3981 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
3982 {
3983         struct phy_info_arg *results = arg;
3984         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
3985         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3986         struct nlattr *nl_rule;
3987         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
3988         int rem_rule;
3989         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
3990                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3991                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3992                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3993                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3994                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3995                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3996         };
3997
3998         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3999                   genlmsg_attrlen(gnlh, 0), NULL);
4000         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
4001             !tb_msg[NL80211_ATTR_REG_RULES]) {
4002                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
4003                            "available");
4004                 return NL_SKIP;
4005         }
4006
4007         wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
4008                    (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
4009
4010         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4011         {
4012                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4013                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4014                 nl80211_reg_rule_ht40(tb_rule, results);
4015         }
4016
4017         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
4018         {
4019                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
4020                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
4021                 nl80211_reg_rule_sec(tb_rule, results);
4022         }
4023
4024         return NL_SKIP;
4025 }
4026
4027
4028 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
4029                                   struct phy_info_arg *results)
4030 {
4031         struct nl_msg *msg;
4032
4033         msg = nlmsg_alloc();
4034         if (!msg)
4035                 return -ENOMEM;
4036
4037         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
4038         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
4039 }
4040
4041
4042 static struct hostapd_hw_modes *
4043 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
4044 {
4045         struct i802_bss *bss = priv;
4046         struct wpa_driver_nl80211_data *drv = bss->drv;
4047         struct nl_msg *msg;
4048         struct phy_info_arg result = {
4049                 .num_modes = num_modes,
4050                 .modes = NULL,
4051         };
4052
4053         *num_modes = 0;
4054         *flags = 0;
4055
4056         msg = nlmsg_alloc();
4057         if (!msg)
4058                 return NULL;
4059
4060         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
4061
4062         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4063
4064         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
4065                 nl80211_set_ht40_flags(drv, &result);
4066                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
4067         }
4068  nla_put_failure:
4069         return NULL;
4070 }
4071
4072
4073 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
4074                                          const void *data, size_t len,
4075                                          int encrypt)
4076 {
4077         __u8 rtap_hdr[] = {
4078                 0x00, 0x00, /* radiotap version */
4079                 0x0e, 0x00, /* radiotap length */
4080                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
4081                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
4082                 0x00,       /* padding */
4083                 0x00, 0x00, /* RX and TX flags to indicate that */
4084                 0x00, 0x00, /* this is the injected frame directly */
4085         };
4086         struct iovec iov[2] = {
4087                 {
4088                         .iov_base = &rtap_hdr,
4089                         .iov_len = sizeof(rtap_hdr),
4090                 },
4091                 {
4092                         .iov_base = (void *) data,
4093                         .iov_len = len,
4094                 }
4095         };
4096         struct msghdr msg = {
4097                 .msg_name = NULL,
4098                 .msg_namelen = 0,
4099                 .msg_iov = iov,
4100                 .msg_iovlen = 2,
4101                 .msg_control = NULL,
4102                 .msg_controllen = 0,
4103                 .msg_flags = 0,
4104         };
4105         int res;
4106
4107         if (encrypt)
4108                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
4109
4110         if (drv->monitor_sock < 0) {
4111                 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
4112                            "for %s", __func__);
4113                 return -1;
4114         }
4115
4116         res = sendmsg(drv->monitor_sock, &msg, 0);
4117         if (res < 0) {
4118                 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
4119                 return -1;
4120         }
4121         return 0;
4122 }
4123
4124
4125 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
4126                                         size_t data_len)
4127 {
4128         struct i802_bss *bss = priv;
4129         struct wpa_driver_nl80211_data *drv = bss->drv;
4130         struct ieee80211_mgmt *mgmt;
4131         int encrypt = 1;
4132         u16 fc;
4133
4134         mgmt = (struct ieee80211_mgmt *) data;
4135         fc = le_to_host16(mgmt->frame_control);
4136
4137         if (is_sta_interface(drv->nlmode) &&
4138             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
4139             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
4140                 /*
4141                  * The use of last_mgmt_freq is a bit of a hack,
4142                  * but it works due to the single-threaded nature
4143                  * of wpa_supplicant.
4144                  */
4145                 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq, 0,
4146                                               data, data_len, NULL, 1);
4147         }
4148
4149         if (drv->no_monitor_iface_capab && is_ap_interface(drv->nlmode)) {
4150                 return nl80211_send_frame_cmd(drv, drv->ap_oper_freq, 0,
4151                                               data, data_len, NULL, 0);
4152         }
4153
4154         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
4155             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
4156                 /*
4157                  * Only one of the authentication frame types is encrypted.
4158                  * In order for static WEP encryption to work properly (i.e.,
4159                  * to not encrypt the frame), we need to tell mac80211 about
4160                  * the frames that must not be encrypted.
4161                  */
4162                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
4163                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
4164                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
4165                         encrypt = 0;
4166         }
4167
4168         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
4169 }
4170
4171
4172 static int nl80211_set_ap_isolate(struct i802_bss *bss, int enabled)
4173 {
4174         struct wpa_driver_nl80211_data *drv = bss->drv;
4175         struct nl_msg *msg;
4176
4177         msg = nlmsg_alloc();
4178         if (!msg)
4179                 return -ENOMEM;
4180
4181         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
4182
4183         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4184         NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, enabled);
4185
4186         return send_and_recv_msgs(drv, msg, NULL, NULL);
4187  nla_put_failure:
4188         return -ENOBUFS;
4189 }
4190
4191
4192 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
4193                            int slot, int ht_opmode)
4194 {
4195         struct wpa_driver_nl80211_data *drv = bss->drv;
4196         struct nl_msg *msg;
4197
4198         msg = nlmsg_alloc();
4199         if (!msg)
4200                 return -ENOMEM;
4201
4202         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
4203
4204         if (cts >= 0)
4205                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4206         if (preamble >= 0)
4207                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4208         if (slot >= 0)
4209                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4210         if (ht_opmode >= 0)
4211                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
4212         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4213
4214         return send_and_recv_msgs(drv, msg, NULL, NULL);
4215  nla_put_failure:
4216         return -ENOBUFS;
4217 }
4218
4219
4220 static int wpa_driver_nl80211_set_ap(void *priv,
4221                                      struct wpa_driver_ap_params *params)
4222 {
4223         struct i802_bss *bss = priv;
4224         struct wpa_driver_nl80211_data *drv = bss->drv;
4225         struct nl_msg *msg;
4226         u8 cmd = NL80211_CMD_NEW_BEACON;
4227         int ret;
4228         int beacon_set;
4229         int ifindex = if_nametoindex(bss->ifname);
4230         int num_suites;
4231         u32 suites[10];
4232         u32 ver;
4233
4234         beacon_set = bss->beacon_set;
4235
4236         msg = nlmsg_alloc();
4237         if (!msg)
4238                 return -ENOMEM;
4239
4240         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4241                    beacon_set);
4242         if (beacon_set)
4243                 cmd = NL80211_CMD_SET_BEACON;
4244
4245         nl80211_cmd(drv, msg, 0, cmd);
4246         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
4247         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
4248         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4249         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
4250         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
4251         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4252                 params->ssid);
4253         switch (params->hide_ssid) {
4254         case NO_SSID_HIDING:
4255                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4256                             NL80211_HIDDEN_SSID_NOT_IN_USE);
4257                 break;
4258         case HIDDEN_SSID_ZERO_LEN:
4259                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4260                             NL80211_HIDDEN_SSID_ZERO_LEN);
4261                 break;
4262         case HIDDEN_SSID_ZERO_CONTENTS:
4263                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4264                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
4265                 break;
4266         }
4267         if (params->privacy)
4268                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4269         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4270             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4271                 /* Leave out the attribute */
4272         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
4273                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4274                             NL80211_AUTHTYPE_SHARED_KEY);
4275         else
4276                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4277                             NL80211_AUTHTYPE_OPEN_SYSTEM);
4278
4279         ver = 0;
4280         if (params->wpa_version & WPA_PROTO_WPA)
4281                 ver |= NL80211_WPA_VERSION_1;
4282         if (params->wpa_version & WPA_PROTO_RSN)
4283                 ver |= NL80211_WPA_VERSION_2;
4284         if (ver)
4285                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4286
4287         num_suites = 0;
4288         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4289                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4290         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4291                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4292         if (num_suites) {
4293                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
4294                         num_suites * sizeof(u32), suites);
4295         }
4296
4297         num_suites = 0;
4298         if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
4299                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
4300         if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
4301                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
4302         if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
4303                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
4304         if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
4305                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
4306         if (num_suites) {
4307                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4308                         num_suites * sizeof(u32), suites);
4309         }
4310
4311         switch (params->group_cipher) {
4312         case WPA_CIPHER_CCMP:
4313                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4314                             WLAN_CIPHER_SUITE_CCMP);
4315                 break;
4316         case WPA_CIPHER_TKIP:
4317                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4318                             WLAN_CIPHER_SUITE_TKIP);
4319                 break;
4320         case WPA_CIPHER_WEP104:
4321                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4322                             WLAN_CIPHER_SUITE_WEP104);
4323                 break;
4324         case WPA_CIPHER_WEP40:
4325                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
4326                             WLAN_CIPHER_SUITE_WEP40);
4327                 break;
4328         }
4329
4330         if (params->beacon_ies) {
4331                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
4332                         wpabuf_head(params->beacon_ies));
4333         }
4334         if (params->proberesp_ies) {
4335                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
4336                         wpabuf_len(params->proberesp_ies),
4337                         wpabuf_head(params->proberesp_ies));
4338         }
4339         if (params->assocresp_ies) {
4340                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
4341                         wpabuf_len(params->assocresp_ies),
4342                         wpabuf_head(params->assocresp_ies));
4343         }
4344
4345         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4346         if (ret) {
4347                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4348                            ret, strerror(-ret));
4349         } else {
4350                 bss->beacon_set = 1;
4351                 ret = nl80211_set_ap_isolate(bss, params->isolate);
4352                 if (!params->isolate && ret) {
4353                         wpa_printf(MSG_DEBUG, "nl80211: Ignore AP isolation "
4354                                    "configuration error since isolation is "
4355                                    "not used");
4356                         ret = 0;
4357                 }
4358
4359                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4360                                 params->short_slot_time, params->ht_opmode);
4361         }
4362         return ret;
4363  nla_put_failure:
4364         return -ENOBUFS;
4365 }
4366
4367
4368 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
4369                                        int freq, int ht_enabled,
4370                                        int sec_channel_offset)
4371 {
4372         struct nl_msg *msg;
4373         int ret;
4374
4375         wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
4376                    "sec_channel_offset=%d)",
4377                    freq, ht_enabled, sec_channel_offset);
4378         msg = nlmsg_alloc();
4379         if (!msg)
4380                 return -1;
4381
4382         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
4383
4384         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4385         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4386         if (ht_enabled) {
4387                 switch (sec_channel_offset) {
4388                 case -1:
4389                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4390                                     NL80211_CHAN_HT40MINUS);
4391                         break;
4392                 case 1:
4393                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4394                                     NL80211_CHAN_HT40PLUS);
4395                         break;
4396                 default:
4397                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4398                                     NL80211_CHAN_HT20);
4399                         break;
4400                 }
4401         }
4402
4403         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4404         if (ret == 0)
4405                 return 0;
4406         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4407                    "%d (%s)", freq, ret, strerror(-ret));
4408 nla_put_failure:
4409         return -1;
4410 }
4411
4412
4413 static u32 sta_flags_nl80211(int flags)
4414 {
4415         u32 f = 0;
4416
4417         if (flags & WPA_STA_AUTHORIZED)
4418                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4419         if (flags & WPA_STA_WMM)
4420                 f |= BIT(NL80211_STA_FLAG_WME);
4421         if (flags & WPA_STA_SHORT_PREAMBLE)
4422                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4423         if (flags & WPA_STA_MFP)
4424                 f |= BIT(NL80211_STA_FLAG_MFP);
4425         if (flags & WPA_STA_TDLS_PEER)
4426                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4427
4428         return f;
4429 }
4430
4431
4432 static int wpa_driver_nl80211_sta_add(void *priv,
4433                                       struct hostapd_sta_add_params *params)
4434 {
4435         struct i802_bss *bss = priv;
4436         struct wpa_driver_nl80211_data *drv = bss->drv;
4437         struct nl_msg *msg;
4438         struct nl80211_sta_flag_update upd;
4439         int ret = -ENOBUFS;
4440
4441         if ((params->flags & WPA_STA_TDLS_PEER) &&
4442             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4443                 return -EOPNOTSUPP;
4444
4445         msg = nlmsg_alloc();
4446         if (!msg)
4447                 return -ENOMEM;
4448
4449         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4450                     NL80211_CMD_NEW_STATION);
4451
4452         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4453         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
4454         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
4455                 params->supp_rates);
4456         if (!params->set) {
4457                 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
4458                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4459                             params->listen_interval);
4460         }
4461         if (params->ht_capabilities) {
4462                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
4463                         sizeof(*params->ht_capabilities),
4464                         params->ht_capabilities);
4465         }
4466
4467         os_memset(&upd, 0, sizeof(upd));
4468         upd.mask = sta_flags_nl80211(params->flags);
4469         upd.set = upd.mask;
4470         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4471
4472         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4473         if (ret)
4474                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4475                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4476                            strerror(-ret));
4477         if (ret == -EEXIST)
4478                 ret = 0;
4479  nla_put_failure:
4480         return ret;
4481 }
4482
4483
4484 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
4485 {
4486         struct i802_bss *bss = priv;
4487         struct wpa_driver_nl80211_data *drv = bss->drv;
4488         struct nl_msg *msg;
4489         int ret;
4490
4491         msg = nlmsg_alloc();
4492         if (!msg)
4493                 return -ENOMEM;
4494
4495         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
4496
4497         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4498                     if_nametoindex(bss->ifname));
4499         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4500
4501         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4502         if (ret == -ENOENT)
4503                 return 0;
4504         return ret;
4505  nla_put_failure:
4506         return -ENOBUFS;
4507 }
4508
4509
4510 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
4511                                  int ifidx)
4512 {
4513         struct nl_msg *msg;
4514
4515         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4516
4517         /* stop listening for EAPOL on this interface */
4518         del_ifidx(drv, ifidx);
4519
4520         msg = nlmsg_alloc();
4521         if (!msg)
4522                 goto nla_put_failure;
4523
4524         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4525         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
4526
4527         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4528                 return;
4529  nla_put_failure:
4530         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4531 }
4532
4533
4534 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4535 {
4536         switch (mode) {
4537         case NL80211_IFTYPE_ADHOC:
4538                 return "ADHOC";
4539         case NL80211_IFTYPE_STATION:
4540                 return "STATION";
4541         case NL80211_IFTYPE_AP:
4542                 return "AP";
4543         case NL80211_IFTYPE_MONITOR:
4544                 return "MONITOR";
4545         case NL80211_IFTYPE_P2P_CLIENT:
4546                 return "P2P_CLIENT";
4547         case NL80211_IFTYPE_P2P_GO:
4548                 return "P2P_GO";
4549         default:
4550                 return "unknown";
4551         }
4552 }
4553
4554
4555 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4556                                      const char *ifname,
4557                                      enum nl80211_iftype iftype,
4558                                      const u8 *addr, int wds)
4559 {
4560         struct nl_msg *msg, *flags = NULL;
4561         int ifidx;
4562         int ret = -ENOBUFS;
4563
4564         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4565                    iftype, nl80211_iftype_str(iftype));
4566
4567         msg = nlmsg_alloc();
4568         if (!msg)
4569                 return -1;
4570
4571         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
4572         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4573         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
4574         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
4575
4576         if (iftype == NL80211_IFTYPE_MONITOR) {
4577                 int err;
4578
4579                 flags = nlmsg_alloc();
4580                 if (!flags)
4581                         goto nla_put_failure;
4582
4583                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
4584
4585                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
4586
4587                 nlmsg_free(flags);
4588
4589                 if (err)
4590                         goto nla_put_failure;
4591         } else if (wds) {
4592                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
4593         }
4594
4595         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4596         if (ret) {
4597  nla_put_failure:
4598                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4599                            ifname, ret, strerror(-ret));
4600                 return ret;
4601         }
4602
4603         ifidx = if_nametoindex(ifname);
4604         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4605                    ifname, ifidx);
4606
4607         if (ifidx <= 0)
4608                 return -1;
4609
4610         /* start listening for EAPOL on this interface */
4611         add_ifidx(drv, ifidx);
4612
4613         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4614             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4615                 nl80211_remove_iface(drv, ifidx);
4616                 return -1;
4617         }
4618
4619         return ifidx;
4620 }
4621
4622
4623 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4624                                 const char *ifname, enum nl80211_iftype iftype,
4625                                 const u8 *addr, int wds)
4626 {
4627         int ret;
4628
4629         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
4630
4631         /* if error occurred and interface exists already */
4632         if (ret == -ENFILE && if_nametoindex(ifname)) {
4633                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4634
4635                 /* Try to remove the interface that was already there. */
4636                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4637
4638                 /* Try to create the interface again */
4639                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4640                                                 wds);
4641         }
4642
4643         if (ret >= 0 && drv->disable_11b_rates)
4644                 nl80211_disable_11b_rates(drv, ret, 1);
4645
4646         return ret;
4647 }
4648
4649
4650 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
4651 {
4652         struct ieee80211_hdr *hdr;
4653         u16 fc;
4654         union wpa_event_data event;
4655
4656         hdr = (struct ieee80211_hdr *) buf;
4657         fc = le_to_host16(hdr->frame_control);
4658
4659         os_memset(&event, 0, sizeof(event));
4660         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
4661         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
4662         event.tx_status.dst = hdr->addr1;
4663         event.tx_status.data = buf;
4664         event.tx_status.data_len = len;
4665         event.tx_status.ack = ok;
4666         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
4667 }
4668
4669
4670 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
4671                              u8 *buf, size_t len)
4672 {
4673         struct ieee80211_hdr *hdr = (void *)buf;
4674         u16 fc;
4675         union wpa_event_data event;
4676
4677         if (len < sizeof(*hdr))
4678                 return;
4679
4680         fc = le_to_host16(hdr->frame_control);
4681
4682         os_memset(&event, 0, sizeof(event));
4683         event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
4684         event.rx_from_unknown.addr = hdr->addr2;
4685         event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
4686                 (WLAN_FC_FROMDS | WLAN_FC_TODS);
4687         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4688 }
4689
4690
4691 static void handle_frame(struct wpa_driver_nl80211_data *drv,
4692                          u8 *buf, size_t len, int datarate, int ssi_signal)
4693 {
4694         struct ieee80211_hdr *hdr;
4695         u16 fc;
4696         union wpa_event_data event;
4697
4698         hdr = (struct ieee80211_hdr *) buf;
4699         fc = le_to_host16(hdr->frame_control);
4700
4701         switch (WLAN_FC_GET_TYPE(fc)) {
4702         case WLAN_FC_TYPE_MGMT:
4703                 os_memset(&event, 0, sizeof(event));
4704                 event.rx_mgmt.frame = buf;
4705                 event.rx_mgmt.frame_len = len;
4706                 event.rx_mgmt.datarate = datarate;
4707                 event.rx_mgmt.ssi_signal = ssi_signal;
4708                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
4709                 break;
4710         case WLAN_FC_TYPE_CTRL:
4711                 /* can only get here with PS-Poll frames */
4712                 wpa_printf(MSG_DEBUG, "CTRL");
4713                 from_unknown_sta(drv, buf, len);
4714                 break;
4715         case WLAN_FC_TYPE_DATA:
4716                 from_unknown_sta(drv, buf, len);
4717                 break;
4718         }
4719 }
4720
4721
4722 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
4723 {
4724         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4725         int len;
4726         unsigned char buf[3000];
4727         struct ieee80211_radiotap_iterator iter;
4728         int ret;
4729         int datarate = 0, ssi_signal = 0;
4730         int injected = 0, failed = 0, rxflags = 0;
4731
4732         len = recv(sock, buf, sizeof(buf), 0);
4733         if (len < 0) {
4734                 perror("recv");
4735                 return;
4736         }
4737
4738         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
4739                 printf("received invalid radiotap frame\n");
4740                 return;
4741         }
4742
4743         while (1) {
4744                 ret = ieee80211_radiotap_iterator_next(&iter);
4745                 if (ret == -ENOENT)
4746                         break;
4747                 if (ret) {
4748                         printf("received invalid radiotap frame (%d)\n", ret);
4749                         return;
4750                 }
4751                 switch (iter.this_arg_index) {
4752                 case IEEE80211_RADIOTAP_FLAGS:
4753                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
4754                                 len -= 4;
4755                         break;
4756                 case IEEE80211_RADIOTAP_RX_FLAGS:
4757                         rxflags = 1;
4758                         break;
4759                 case IEEE80211_RADIOTAP_TX_FLAGS:
4760                         injected = 1;
4761                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
4762                                         IEEE80211_RADIOTAP_F_TX_FAIL;
4763                         break;
4764                 case IEEE80211_RADIOTAP_DATA_RETRIES:
4765                         break;
4766                 case IEEE80211_RADIOTAP_CHANNEL:
4767                         /* TODO: convert from freq/flags to channel number */
4768                         break;
4769                 case IEEE80211_RADIOTAP_RATE:
4770                         datarate = *iter.this_arg * 5;
4771                         break;
4772                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
4773                         ssi_signal = *iter.this_arg;
4774                         break;
4775                 }
4776         }
4777
4778         if (rxflags && injected)
4779                 return;
4780
4781         if (!injected)
4782                 handle_frame(drv, buf + iter.max_length,
4783                              len - iter.max_length, datarate, ssi_signal);
4784         else
4785                 handle_tx_callback(drv->ctx, buf + iter.max_length,
4786                                    len - iter.max_length, !failed);
4787 }
4788
4789
4790 /*
4791  * we post-process the filter code later and rewrite
4792  * this to the offset to the last instruction
4793  */
4794 #define PASS    0xFF
4795 #define FAIL    0xFE
4796
4797 static struct sock_filter msock_filter_insns[] = {
4798         /*
4799          * do a little-endian load of the radiotap length field
4800          */
4801         /* load lower byte into A */
4802         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
4803         /* put it into X (== index register) */
4804         BPF_STMT(BPF_MISC| BPF_TAX, 0),
4805         /* load upper byte into A */
4806         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
4807         /* left-shift it by 8 */
4808         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
4809         /* or with X */
4810         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
4811         /* put result into X */
4812         BPF_STMT(BPF_MISC| BPF_TAX, 0),
4813
4814         /*
4815          * Allow management frames through, this also gives us those
4816          * management frames that we sent ourselves with status
4817          */
4818         /* load the lower byte of the IEEE 802.11 frame control field */
4819         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
4820         /* mask off frame type and version */
4821         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
4822         /* accept frame if it's both 0, fall through otherwise */
4823         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
4824
4825         /*
4826          * TODO: add a bit to radiotap RX flags that indicates
4827          * that the sending station is not associated, then
4828          * add a filter here that filters on our DA and that flag
4829          * to allow us to deauth frames to that bad station.
4830          *
4831          * For now allow all To DS data frames through.
4832          */
4833         /* load the IEEE 802.11 frame control field */
4834         BPF_STMT(BPF_LD  | BPF_H | BPF_IND, 0),
4835         /* mask off frame type, version and DS status */
4836         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
4837         /* accept frame if version 0, type 2 and To DS, fall through otherwise
4838          */
4839         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
4840
4841 #if 0
4842         /*
4843          * drop non-data frames
4844          */
4845         /* load the lower byte of the frame control field */
4846         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
4847         /* mask off QoS bit */
4848         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
4849         /* drop non-data frames */
4850         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
4851 #endif
4852         /* load the upper byte of the frame control field */
4853         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
4854         /* mask off toDS/fromDS */
4855         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
4856         /* accept WDS frames */
4857         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
4858
4859         /*
4860          * add header length to index
4861          */
4862         /* load the lower byte of the frame control field */
4863         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
4864         /* mask off QoS bit */
4865         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
4866         /* right shift it by 6 to give 0 or 2 */
4867         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
4868         /* add data frame header length */
4869         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
4870         /* add index, was start of 802.11 header */
4871         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
4872         /* move to index, now start of LL header */
4873         BPF_STMT(BPF_MISC | BPF_TAX, 0),
4874
4875         /*
4876          * Accept empty data frames, we use those for
4877          * polling activity.
4878          */
4879         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
4880         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
4881
4882         /*
4883          * Accept EAPOL frames
4884          */
4885         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
4886         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
4887         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
4888         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
4889
4890         /* keep these last two statements or change the code below */
4891         /* return 0 == "DROP" */
4892         BPF_STMT(BPF_RET | BPF_K, 0),
4893         /* return ~0 == "keep all" */
4894         BPF_STMT(BPF_RET | BPF_K, ~0),
4895 };
4896
4897 static struct sock_fprog msock_filter = {
4898         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
4899         .filter = msock_filter_insns,
4900 };
4901
4902
4903 static int add_monitor_filter(int s)
4904 {
4905         int idx;
4906
4907         /* rewrite all PASS/FAIL jump offsets */
4908         for (idx = 0; idx < msock_filter.len; idx++) {
4909                 struct sock_filter *insn = &msock_filter_insns[idx];
4910
4911                 if (BPF_CLASS(insn->code) == BPF_JMP) {
4912                         if (insn->code == (BPF_JMP|BPF_JA)) {
4913                                 if (insn->k == PASS)
4914                                         insn->k = msock_filter.len - idx - 2;
4915                                 else if (insn->k == FAIL)
4916                                         insn->k = msock_filter.len - idx - 3;
4917                         }
4918
4919                         if (insn->jt == PASS)
4920                                 insn->jt = msock_filter.len - idx - 2;
4921                         else if (insn->jt == FAIL)
4922                                 insn->jt = msock_filter.len - idx - 3;
4923
4924                         if (insn->jf == PASS)
4925                                 insn->jf = msock_filter.len - idx - 2;
4926                         else if (insn->jf == FAIL)
4927                                 insn->jf = msock_filter.len - idx - 3;
4928                 }
4929         }
4930
4931         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
4932                        &msock_filter, sizeof(msock_filter))) {
4933                 perror("SO_ATTACH_FILTER");
4934                 return -1;
4935         }
4936
4937         return 0;
4938 }
4939
4940
4941 static void nl80211_remove_monitor_interface(
4942         struct wpa_driver_nl80211_data *drv)
4943 {
4944         if (drv->monitor_ifidx >= 0) {
4945                 nl80211_remove_iface(drv, drv->monitor_ifidx);
4946                 drv->monitor_ifidx = -1;
4947         }
4948         if (drv->monitor_sock >= 0) {
4949                 eloop_unregister_read_sock(drv->monitor_sock);
4950                 close(drv->monitor_sock);
4951                 drv->monitor_sock = -1;
4952         }
4953 }
4954
4955
4956 static int
4957 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
4958 {
4959         char buf[IFNAMSIZ];
4960         struct sockaddr_ll ll;
4961         int optval;
4962         socklen_t optlen;
4963
4964         if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
4965                 /*
4966                  * P2P interface name is of the format p2p-%s-%d. For monitor
4967                  * interface name corresponding to P2P GO, replace "p2p-" with
4968                  * "mon-" to retain the same interface name length and to
4969                  * indicate that it is a monitor interface.
4970                  */
4971                 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
4972         } else {
4973                 /* Non-P2P interface with AP functionality. */
4974                 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
4975         }
4976
4977         buf[IFNAMSIZ - 1] = '\0';
4978
4979         drv->monitor_ifidx =
4980                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
4981                                      0);
4982
4983         if (drv->monitor_ifidx == -EOPNOTSUPP) {
4984                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
4985                            "monitor interface type - try to run without it");
4986                 drv->no_monitor_iface_capab = 1;
4987         }
4988
4989         if (drv->monitor_ifidx < 0)
4990                 return -1;
4991
4992         if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
4993                 goto error;
4994
4995         memset(&ll, 0, sizeof(ll));
4996         ll.sll_family = AF_PACKET;
4997         ll.sll_ifindex = drv->monitor_ifidx;
4998         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
4999         if (drv->monitor_sock < 0) {
5000                 perror("socket[PF_PACKET,SOCK_RAW]");
5001                 goto error;
5002         }
5003
5004         if (add_monitor_filter(drv->monitor_sock)) {
5005                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
5006                            "interface; do filtering in user space");
5007                 /* This works, but will cost in performance. */
5008         }
5009
5010         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
5011                 perror("monitor socket bind");
5012                 goto error;
5013         }
5014
5015         optlen = sizeof(optval);
5016         optval = 20;
5017         if (setsockopt
5018             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
5019                 perror("Failed to set socket priority");
5020                 goto error;
5021         }
5022
5023         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
5024                                      drv, NULL)) {
5025                 printf("Could not register monitor read socket\n");
5026                 goto error;
5027         }
5028
5029         return 0;
5030  error:
5031         nl80211_remove_monitor_interface(drv);
5032         return -1;
5033 }
5034
5035
5036 #ifdef CONFIG_AP
5037 static int nl80211_send_eapol_data(struct i802_bss *bss,
5038                                    const u8 *addr, const u8 *data,
5039                                    size_t data_len, const u8 *own_addr)
5040 {
5041         if (bss->drv->l2 == NULL) {
5042                 wpa_printf(MSG_DEBUG, "nl80211: No l2_packet to send EAPOL");
5043                 return -1;
5044         }
5045
5046         if (l2_packet_send(bss->drv->l2, addr, ETH_P_EAPOL, data, data_len) <
5047             0)
5048                 return -1;
5049         return 0;
5050 }
5051 #endif /* CONFIG_AP */
5052
5053
5054 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
5055
5056 static int wpa_driver_nl80211_hapd_send_eapol(
5057         void *priv, const u8 *addr, const u8 *data,
5058         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
5059 {
5060         struct i802_bss *bss = priv;
5061         struct wpa_driver_nl80211_data *drv = bss->drv;
5062         struct ieee80211_hdr *hdr;
5063         size_t len;
5064         u8 *pos;
5065         int res;
5066         int qos = flags & WPA_STA_WMM;
5067
5068 #ifdef CONFIG_AP
5069         if (drv->no_monitor_iface_capab)
5070                 return nl80211_send_eapol_data(bss, addr, data, data_len,
5071                                                own_addr);
5072 #endif /* CONFIG_AP */
5073
5074         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
5075                 data_len;
5076         hdr = os_zalloc(len);
5077         if (hdr == NULL) {
5078                 printf("malloc() failed for i802_send_data(len=%lu)\n",
5079                        (unsigned long) len);
5080                 return -1;
5081         }
5082
5083         hdr->frame_control =
5084                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
5085         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
5086         if (encrypt)
5087                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
5088         if (qos) {
5089                 hdr->frame_control |=
5090                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
5091         }
5092
5093         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
5094         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
5095         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
5096         pos = (u8 *) (hdr + 1);
5097
5098         if (qos) {
5099                 /* add an empty QoS header if needed */
5100                 pos[0] = 0;
5101                 pos[1] = 0;
5102                 pos += 2;
5103         }
5104
5105         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
5106         pos += sizeof(rfc1042_header);
5107         WPA_PUT_BE16(pos, ETH_P_PAE);
5108         pos += 2;
5109         memcpy(pos, data, data_len);
5110
5111         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
5112         if (res < 0) {
5113                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
5114                            "failed: %d (%s)",
5115                            (unsigned long) len, errno, strerror(errno));
5116         }
5117         os_free(hdr);
5118
5119         return res;
5120 }
5121
5122
5123 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
5124                                             int total_flags,
5125                                             int flags_or, int flags_and)
5126 {
5127         struct i802_bss *bss = priv;
5128         struct wpa_driver_nl80211_data *drv = bss->drv;
5129         struct nl_msg *msg, *flags = NULL;
5130         struct nl80211_sta_flag_update upd;
5131
5132         msg = nlmsg_alloc();
5133         if (!msg)
5134                 return -ENOMEM;
5135
5136         flags = nlmsg_alloc();
5137         if (!flags) {
5138                 nlmsg_free(msg);
5139                 return -ENOMEM;
5140         }
5141
5142         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5143
5144         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5145                     if_nametoindex(bss->ifname));
5146         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5147
5148         /*
5149          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
5150          * can be removed eventually.
5151          */
5152         if (total_flags & WPA_STA_AUTHORIZED)
5153                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
5154
5155         if (total_flags & WPA_STA_WMM)
5156                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
5157
5158         if (total_flags & WPA_STA_SHORT_PREAMBLE)
5159                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
5160
5161         if (total_flags & WPA_STA_MFP)
5162                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
5163
5164         if (total_flags & WPA_STA_TDLS_PEER)
5165                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
5166
5167         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
5168                 goto nla_put_failure;
5169
5170         os_memset(&upd, 0, sizeof(upd));
5171         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
5172         upd.set = sta_flags_nl80211(flags_or);
5173         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5174
5175         nlmsg_free(flags);
5176
5177         return send_and_recv_msgs(drv, msg, NULL, NULL);
5178  nla_put_failure:
5179         nlmsg_free(flags);
5180         return -ENOBUFS;
5181 }
5182
5183
5184 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
5185                                  struct wpa_driver_associate_params *params)
5186 {
5187         enum nl80211_iftype nlmode;
5188
5189         if (params->p2p) {
5190                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
5191                            "group (GO)");
5192                 nlmode = NL80211_IFTYPE_P2P_GO;
5193         } else
5194                 nlmode = NL80211_IFTYPE_AP;
5195
5196         if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
5197             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
5198                 nl80211_remove_monitor_interface(drv);
5199                 return -1;
5200         }
5201
5202         if (drv->no_monitor_iface_capab) {
5203                 if (wpa_driver_nl80211_probe_req_report(&drv->first_bss, 1) < 0)
5204                 {
5205                         wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
5206                                    "Probe Request frame reporting in AP mode");
5207                         /* Try to survive without this */
5208                 }
5209         }
5210
5211         drv->ap_oper_freq = params->freq;
5212
5213         return 0;
5214 }
5215
5216
5217 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5218 {
5219         struct nl_msg *msg;
5220         int ret = -1;
5221
5222         msg = nlmsg_alloc();
5223         if (!msg)
5224                 return -1;
5225
5226         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
5227         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5228         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5229         msg = NULL;
5230         if (ret) {
5231                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5232                            "(%s)", ret, strerror(-ret));
5233                 goto nla_put_failure;
5234         }
5235
5236         ret = 0;
5237         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5238
5239 nla_put_failure:
5240         nlmsg_free(msg);
5241         return ret;
5242 }
5243
5244
5245 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5246                                    struct wpa_driver_associate_params *params)
5247 {
5248         struct nl_msg *msg;
5249         int ret = -1;
5250         int count = 0;
5251
5252         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5253
5254         if (wpa_driver_nl80211_set_mode(&drv->first_bss,
5255                                         NL80211_IFTYPE_ADHOC)) {
5256                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5257                            "IBSS mode");
5258                 return -1;
5259         }
5260
5261 retry:
5262         msg = nlmsg_alloc();
5263         if (!msg)
5264                 return -1;
5265
5266         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
5267         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5268
5269         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5270                 goto nla_put_failure;
5271
5272         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5273                           params->ssid, params->ssid_len);
5274         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5275                 params->ssid);
5276         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5277         drv->ssid_len = params->ssid_len;
5278
5279         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
5280         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5281
5282         ret = nl80211_set_conn_keys(params, msg);
5283         if (ret)
5284                 goto nla_put_failure;
5285
5286         if (params->wpa_ie) {
5287                 wpa_hexdump(MSG_DEBUG,
5288                             "  * Extra IEs for Beacon/Probe Response frames",
5289                             params->wpa_ie, params->wpa_ie_len);
5290                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5291                         params->wpa_ie);
5292         }
5293
5294         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5295         msg = NULL;
5296         if (ret) {
5297                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5298                            ret, strerror(-ret));
5299                 count++;
5300                 if (ret == -EALREADY && count == 1) {
5301                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5302                                    "forced leave");
5303                         nl80211_leave_ibss(drv);
5304                         nlmsg_free(msg);
5305                         goto retry;
5306                 }
5307
5308                 goto nla_put_failure;
5309         }
5310         ret = 0;
5311         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
5312
5313 nla_put_failure:
5314         nlmsg_free(msg);
5315         return ret;
5316 }
5317
5318
5319 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
5320                                             u8 *bssid)
5321 {
5322         struct nl_msg *msg;
5323         int ret;
5324         struct nl80211_bss_info_arg arg;
5325
5326         os_memset(&arg, 0, sizeof(arg));
5327         msg = nlmsg_alloc();
5328         if (!msg)
5329                 goto nla_put_failure;
5330
5331         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
5332         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5333
5334         arg.drv = drv;
5335         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
5336         msg = NULL;
5337         if (ret == 0) {
5338                 if (is_zero_ether_addr(arg.assoc_bssid))
5339                         return -ENOTCONN;
5340                 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
5341                 return 0;
5342         }
5343         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
5344                    "(%s)", ret, strerror(-ret));
5345 nla_put_failure:
5346         nlmsg_free(msg);
5347         return drv->assoc_freq;
5348 }
5349
5350
5351 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
5352                               const u8 *bssid)
5353 {
5354         u8 addr[ETH_ALEN];
5355
5356         if (bssid == NULL) {
5357                 int res = nl80211_get_assoc_bssid(drv, addr);
5358                 if (res)
5359                         return res;
5360                 bssid = addr;
5361         }
5362
5363         return wpa_driver_nl80211_disconnect(drv, bssid,
5364                                              WLAN_REASON_PREV_AUTH_NOT_VALID);
5365 }
5366
5367
5368 static int wpa_driver_nl80211_connect(
5369         struct wpa_driver_nl80211_data *drv,
5370         struct wpa_driver_associate_params *params)
5371 {
5372         struct nl_msg *msg;
5373         enum nl80211_auth_type type;
5374         int ret = 0;
5375         int algs;
5376
5377         msg = nlmsg_alloc();
5378         if (!msg)
5379                 return -1;
5380
5381         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5382         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5383
5384         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5385         if (params->bssid) {
5386                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5387                            MAC2STR(params->bssid));
5388                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5389         }
5390         if (params->freq) {
5391                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
5392                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5393         }
5394         if (params->ssid) {
5395                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5396                                   params->ssid, params->ssid_len);
5397                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5398                         params->ssid);
5399                 if (params->ssid_len > sizeof(drv->ssid))
5400                         goto nla_put_failure;
5401                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5402                 drv->ssid_len = params->ssid_len;
5403         }
5404         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
5405         if (params->wpa_ie)
5406                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5407                         params->wpa_ie);
5408
5409         algs = 0;
5410         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5411                 algs++;
5412         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5413                 algs++;
5414         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5415                 algs++;
5416         if (algs > 1) {
5417                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
5418                            "selection");
5419                 goto skip_auth_type;
5420         }
5421
5422         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5423                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5424         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5425                 type = NL80211_AUTHTYPE_SHARED_KEY;
5426         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5427                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5428         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5429                 type = NL80211_AUTHTYPE_FT;
5430         else
5431                 goto nla_put_failure;
5432
5433         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5434         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5435
5436 skip_auth_type:
5437         if (params->wpa_proto) {
5438                 enum nl80211_wpa_versions ver = 0;
5439
5440                 if (params->wpa_proto & WPA_PROTO_WPA)
5441                         ver |= NL80211_WPA_VERSION_1;
5442                 if (params->wpa_proto & WPA_PROTO_RSN)
5443                         ver |= NL80211_WPA_VERSION_2;
5444
5445                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
5446                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5447         }
5448
5449         if (params->pairwise_suite != CIPHER_NONE) {
5450                 int cipher;
5451
5452                 switch (params->pairwise_suite) {
5453                 case CIPHER_WEP40:
5454                         cipher = WLAN_CIPHER_SUITE_WEP40;
5455                         break;
5456                 case CIPHER_WEP104:
5457                         cipher = WLAN_CIPHER_SUITE_WEP104;
5458                         break;
5459                 case CIPHER_CCMP:
5460                         cipher = WLAN_CIPHER_SUITE_CCMP;
5461                         break;
5462                 case CIPHER_TKIP:
5463                 default:
5464                         cipher = WLAN_CIPHER_SUITE_TKIP;
5465                         break;
5466                 }
5467                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5468         }
5469
5470         if (params->group_suite != CIPHER_NONE) {
5471                 int cipher;
5472
5473                 switch (params->group_suite) {
5474                 case CIPHER_WEP40:
5475                         cipher = WLAN_CIPHER_SUITE_WEP40;
5476                         break;
5477                 case CIPHER_WEP104:
5478                         cipher = WLAN_CIPHER_SUITE_WEP104;
5479                         break;
5480                 case CIPHER_CCMP:
5481                         cipher = WLAN_CIPHER_SUITE_CCMP;
5482                         break;
5483                 case CIPHER_TKIP:
5484                 default:
5485                         cipher = WLAN_CIPHER_SUITE_TKIP;
5486                         break;
5487                 }
5488                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5489         }
5490
5491         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
5492             params->key_mgmt_suite == KEY_MGMT_PSK) {
5493                 int mgmt = WLAN_AKM_SUITE_PSK;
5494
5495                 switch (params->key_mgmt_suite) {
5496                 case KEY_MGMT_802_1X:
5497                         mgmt = WLAN_AKM_SUITE_8021X;
5498                         break;
5499                 case KEY_MGMT_PSK:
5500                 default:
5501                         mgmt = WLAN_AKM_SUITE_PSK;
5502                         break;
5503                 }
5504                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
5505         }
5506
5507         ret = nl80211_set_conn_keys(params, msg);
5508         if (ret)
5509                 goto nla_put_failure;
5510
5511         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5512         msg = NULL;
5513         if (ret) {
5514                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5515                            "(%s)", ret, strerror(-ret));
5516                 /*
5517                  * cfg80211 does not currently accept new connection if we are
5518                  * already connected. As a workaround, force disconnection and
5519                  * try again once the driver indicates it completed
5520                  * disconnection.
5521                  */
5522                 if (ret == -EALREADY)
5523                         nl80211_disconnect(drv, params->bssid);
5524                 goto nla_put_failure;
5525         }
5526         ret = 0;
5527         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
5528
5529 nla_put_failure:
5530         nlmsg_free(msg);
5531         return ret;
5532
5533 }
5534
5535
5536 static int wpa_driver_nl80211_associate(
5537         void *priv, struct wpa_driver_associate_params *params)
5538 {
5539         struct i802_bss *bss = priv;
5540         struct wpa_driver_nl80211_data *drv = bss->drv;
5541         int ret = -1;
5542         struct nl_msg *msg;
5543
5544         if (params->mode == IEEE80211_MODE_AP)
5545                 return wpa_driver_nl80211_ap(drv, params);
5546
5547         if (params->mode == IEEE80211_MODE_IBSS)
5548                 return wpa_driver_nl80211_ibss(drv, params);
5549
5550         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5551                 enum nl80211_iftype nlmode = params->p2p ?
5552                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5553
5554                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5555                         return -1;
5556                 return wpa_driver_nl80211_connect(drv, params);
5557         }
5558
5559         drv->associated = 0;
5560
5561         msg = nlmsg_alloc();
5562         if (!msg)
5563                 return -1;
5564
5565         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5566                    drv->ifindex);
5567         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
5568
5569         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5570         if (params->bssid) {
5571                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5572                            MAC2STR(params->bssid));
5573                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5574         }
5575         if (params->freq) {
5576                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
5577                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5578                 drv->assoc_freq = params->freq;
5579         } else
5580                 drv->assoc_freq = 0;
5581         if (params->ssid) {
5582                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5583                                   params->ssid, params->ssid_len);
5584                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5585                         params->ssid);
5586                 if (params->ssid_len > sizeof(drv->ssid))
5587                         goto nla_put_failure;
5588                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5589                 drv->ssid_len = params->ssid_len;
5590         }
5591         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
5592         if (params->wpa_ie)
5593                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5594                         params->wpa_ie);
5595
5596         if (params->pairwise_suite != CIPHER_NONE) {
5597                 int cipher;
5598
5599                 switch (params->pairwise_suite) {
5600                 case CIPHER_WEP40:
5601                         cipher = WLAN_CIPHER_SUITE_WEP40;
5602                         break;
5603                 case CIPHER_WEP104:
5604                         cipher = WLAN_CIPHER_SUITE_WEP104;
5605                         break;
5606                 case CIPHER_CCMP:
5607                         cipher = WLAN_CIPHER_SUITE_CCMP;
5608                         break;
5609                 case CIPHER_TKIP:
5610                 default:
5611                         cipher = WLAN_CIPHER_SUITE_TKIP;
5612                         break;
5613                 }
5614                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
5615                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5616         }
5617
5618         if (params->group_suite != CIPHER_NONE) {
5619                 int cipher;
5620
5621                 switch (params->group_suite) {
5622                 case CIPHER_WEP40:
5623                         cipher = WLAN_CIPHER_SUITE_WEP40;
5624                         break;
5625                 case CIPHER_WEP104:
5626                         cipher = WLAN_CIPHER_SUITE_WEP104;
5627                         break;
5628                 case CIPHER_CCMP:
5629                         cipher = WLAN_CIPHER_SUITE_CCMP;
5630                         break;
5631                 case CIPHER_TKIP:
5632                 default:
5633                         cipher = WLAN_CIPHER_SUITE_TKIP;
5634                         break;
5635                 }
5636                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
5637                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5638         }
5639
5640 #ifdef CONFIG_IEEE80211W
5641         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
5642                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
5643 #endif /* CONFIG_IEEE80211W */
5644
5645         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5646
5647         if (params->prev_bssid) {
5648                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
5649                            MAC2STR(params->prev_bssid));
5650                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5651                         params->prev_bssid);
5652         }
5653
5654         if (params->p2p)
5655                 wpa_printf(MSG_DEBUG, "  * P2P group");
5656
5657         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5658         msg = NULL;
5659         if (ret) {
5660                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
5661                            "(%s)", ret, strerror(-ret));
5662                 nl80211_dump_scan(drv);
5663                 goto nla_put_failure;
5664         }
5665         ret = 0;
5666         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
5667                    "successfully");
5668
5669 nla_put_failure:
5670         nlmsg_free(msg);
5671         return ret;
5672 }
5673
5674
5675 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5676                             int ifindex, enum nl80211_iftype mode)
5677 {
5678         struct nl_msg *msg;
5679         int ret = -ENOBUFS;
5680
5681         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5682                    ifindex, mode, nl80211_iftype_str(mode));
5683
5684         msg = nlmsg_alloc();
5685         if (!msg)
5686                 return -ENOMEM;
5687
5688         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
5689         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5690         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
5691
5692         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5693         if (!ret)
5694                 return 0;
5695 nla_put_failure:
5696         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5697                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5698         return ret;
5699 }
5700
5701
5702 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5703                                        enum nl80211_iftype nlmode)
5704 {
5705         struct wpa_driver_nl80211_data *drv = bss->drv;
5706         int ret = -1;
5707         int i;
5708         int was_ap = is_ap_interface(drv->nlmode);
5709
5710         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
5711                 drv->nlmode = nlmode;
5712                 ret = 0;
5713                 goto done;
5714         }
5715
5716         if (nlmode == drv->nlmode) {
5717                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5718                            "requested mode - ignore error");
5719                 ret = 0;
5720                 goto done; /* Already in the requested mode */
5721         }
5722
5723         /* mac80211 doesn't allow mode changes while the device is up, so
5724          * take the device down, try to set the mode again, and bring the
5725          * device back up.
5726          */
5727         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5728                    "interface down");
5729         for (i = 0; i < 10; i++) {
5730                 int res;
5731                 res = linux_set_iface_flags(drv->global->ioctl_sock,
5732                                             bss->ifname, 0);
5733                 if (res == -EACCES || res == -ENODEV)
5734                         break;
5735                 if (res == 0) {
5736                         /* Try to set the mode again while the interface is
5737                          * down */
5738                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
5739                         if (ret == -EACCES)
5740                                 break;
5741                         res = linux_set_iface_flags(drv->global->ioctl_sock,
5742                                                     bss->ifname, 1);
5743                         if (res && !ret)
5744                                 ret = -1;
5745                         else if (ret != -EBUSY)
5746                                 break;
5747                 } else
5748                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5749                                    "interface down");
5750                 os_sleep(0, 100000);
5751         }
5752
5753         if (!ret) {
5754                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5755                            "interface is down");
5756                 drv->nlmode = nlmode;
5757                 drv->ignore_if_down_event = 1;
5758         }
5759
5760 done:
5761         if (!ret && is_ap_interface(nlmode)) {
5762                 /* Setup additional AP mode functionality if needed */
5763                 if (!drv->no_monitor_iface_capab && drv->monitor_ifidx < 0 &&
5764                     nl80211_create_monitor_interface(drv) &&
5765                     !drv->no_monitor_iface_capab)
5766                         return -1;
5767         } else if (!ret && !is_ap_interface(nlmode)) {
5768                 /* Remove additional AP mode functionality */
5769                 if (was_ap && drv->no_monitor_iface_capab)
5770                         wpa_driver_nl80211_probe_req_report(bss, 0);
5771                 nl80211_remove_monitor_interface(drv);
5772                 bss->beacon_set = 0;
5773         }
5774
5775         if (!ret && drv->disable_11b_rates)
5776                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5777
5778         if (ret)
5779                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5780                            "from %d failed", nlmode, drv->nlmode);
5781
5782         return ret;
5783 }
5784
5785
5786 static int wpa_driver_nl80211_get_capa(void *priv,
5787                                        struct wpa_driver_capa *capa)
5788 {
5789         struct i802_bss *bss = priv;
5790         struct wpa_driver_nl80211_data *drv = bss->drv;
5791         if (!drv->has_capability)
5792                 return -1;
5793         os_memcpy(capa, &drv->capa, sizeof(*capa));
5794         return 0;
5795 }
5796
5797
5798 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5799 {
5800         struct i802_bss *bss = priv;
5801         struct wpa_driver_nl80211_data *drv = bss->drv;
5802
5803         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
5804                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
5805         drv->operstate = state;
5806         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5807                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5808 }
5809
5810
5811 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5812 {
5813         struct i802_bss *bss = priv;
5814         struct wpa_driver_nl80211_data *drv = bss->drv;
5815         struct nl_msg *msg;
5816         struct nl80211_sta_flag_update upd;
5817
5818         msg = nlmsg_alloc();
5819         if (!msg)
5820                 return -ENOMEM;
5821
5822         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5823
5824         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5825                     if_nametoindex(bss->ifname));
5826         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
5827
5828         os_memset(&upd, 0, sizeof(upd));
5829         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5830         if (authorized)
5831                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5832         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5833
5834         return send_and_recv_msgs(drv, msg, NULL, NULL);
5835  nla_put_failure:
5836         return -ENOBUFS;
5837 }
5838
5839
5840 /* Set kernel driver on given frequency (MHz) */
5841 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5842 {
5843         struct i802_bss *bss = priv;
5844         struct wpa_driver_nl80211_data *drv = bss->drv;
5845         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
5846                                            freq->sec_channel_offset);
5847 }
5848
5849
5850 #if defined(HOSTAPD) || defined(CONFIG_AP)
5851
5852 static inline int min_int(int a, int b)
5853 {
5854         if (a < b)
5855                 return a;
5856         return b;
5857 }
5858
5859
5860 static int get_key_handler(struct nl_msg *msg, void *arg)
5861 {
5862         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5863         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5864
5865         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5866                   genlmsg_attrlen(gnlh, 0), NULL);
5867
5868         /*
5869          * TODO: validate the key index and mac address!
5870          * Otherwise, there's a race condition as soon as
5871          * the kernel starts sending key notifications.
5872          */
5873
5874         if (tb[NL80211_ATTR_KEY_SEQ])
5875                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5876                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5877         return NL_SKIP;
5878 }
5879
5880
5881 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5882                            int idx, u8 *seq)
5883 {
5884         struct i802_bss *bss = priv;
5885         struct wpa_driver_nl80211_data *drv = bss->drv;
5886         struct nl_msg *msg;
5887
5888         msg = nlmsg_alloc();
5889         if (!msg)
5890                 return -ENOMEM;
5891
5892         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
5893
5894         if (addr)
5895                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5896         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
5897         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
5898
5899         memset(seq, 0, 6);
5900
5901         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5902  nla_put_failure:
5903         return -ENOBUFS;
5904 }
5905
5906
5907 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
5908                               int mode)
5909 {
5910         struct i802_bss *bss = priv;
5911         struct wpa_driver_nl80211_data *drv = bss->drv;
5912         struct nl_msg *msg;
5913         u8 rates[NL80211_MAX_SUPP_RATES];
5914         u8 rates_len = 0;
5915         int i;
5916
5917         msg = nlmsg_alloc();
5918         if (!msg)
5919                 return -ENOMEM;
5920
5921         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5922
5923         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
5924                 rates[rates_len++] = basic_rates[i] / 5;
5925
5926         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5927
5928         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5929
5930         return send_and_recv_msgs(drv, msg, NULL, NULL);
5931  nla_put_failure:
5932         return -ENOBUFS;
5933 }
5934
5935
5936 static int i802_set_rts(void *priv, int rts)
5937 {
5938         struct i802_bss *bss = priv;
5939         struct wpa_driver_nl80211_data *drv = bss->drv;
5940         struct nl_msg *msg;
5941         int ret = -ENOBUFS;
5942         u32 val;
5943
5944         msg = nlmsg_alloc();
5945         if (!msg)
5946                 return -ENOMEM;
5947
5948         if (rts >= 2347)
5949                 val = (u32) -1;
5950         else
5951                 val = rts;
5952
5953         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5954         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5955         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
5956
5957         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5958         if (!ret)
5959                 return 0;
5960 nla_put_failure:
5961         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5962                    "%d (%s)", rts, ret, strerror(-ret));
5963         return ret;
5964 }
5965
5966
5967 static int i802_set_frag(void *priv, int frag)
5968 {
5969         struct i802_bss *bss = priv;
5970         struct wpa_driver_nl80211_data *drv = bss->drv;
5971         struct nl_msg *msg;
5972         int ret = -ENOBUFS;
5973         u32 val;
5974
5975         msg = nlmsg_alloc();
5976         if (!msg)
5977                 return -ENOMEM;
5978
5979         if (frag >= 2346)
5980                 val = (u32) -1;
5981         else
5982                 val = frag;
5983
5984         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5985         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5986         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
5987
5988         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5989         if (!ret)
5990                 return 0;
5991 nla_put_failure:
5992         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5993                    "%d: %d (%s)", frag, ret, strerror(-ret));
5994         return ret;
5995 }
5996
5997
5998 static int i802_flush(void *priv)
5999 {
6000         struct i802_bss *bss = priv;
6001         struct wpa_driver_nl80211_data *drv = bss->drv;
6002         struct nl_msg *msg;
6003
6004         msg = nlmsg_alloc();
6005         if (!msg)
6006                 return -1;
6007
6008         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
6009
6010         /*
6011          * XXX: FIX! this needs to flush all VLANs too
6012          */
6013         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6014                     if_nametoindex(bss->ifname));
6015
6016         return send_and_recv_msgs(drv, msg, NULL, NULL);
6017  nla_put_failure:
6018         return -ENOBUFS;
6019 }
6020
6021
6022 static int get_sta_handler(struct nl_msg *msg, void *arg)
6023 {
6024         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6025         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6026         struct hostap_sta_driver_data *data = arg;
6027         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
6028         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
6029                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
6030                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
6031                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
6032                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
6033                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
6034         };
6035
6036         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6037                   genlmsg_attrlen(gnlh, 0), NULL);
6038
6039         /*
6040          * TODO: validate the interface and mac address!
6041          * Otherwise, there's a race condition as soon as
6042          * the kernel starts sending station notifications.
6043          */
6044
6045         if (!tb[NL80211_ATTR_STA_INFO]) {
6046                 wpa_printf(MSG_DEBUG, "sta stats missing!");
6047                 return NL_SKIP;
6048         }
6049         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
6050                              tb[NL80211_ATTR_STA_INFO],
6051                              stats_policy)) {
6052                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
6053                 return NL_SKIP;
6054         }
6055
6056         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
6057                 data->inactive_msec =
6058                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
6059         if (stats[NL80211_STA_INFO_RX_BYTES])
6060                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
6061         if (stats[NL80211_STA_INFO_TX_BYTES])
6062                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
6063         if (stats[NL80211_STA_INFO_RX_PACKETS])
6064                 data->rx_packets =
6065                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
6066         if (stats[NL80211_STA_INFO_TX_PACKETS])
6067                 data->tx_packets =
6068                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
6069
6070         return NL_SKIP;
6071 }
6072
6073 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
6074                               const u8 *addr)
6075 {
6076         struct i802_bss *bss = priv;
6077         struct wpa_driver_nl80211_data *drv = bss->drv;
6078         struct nl_msg *msg;
6079
6080         os_memset(data, 0, sizeof(*data));
6081         msg = nlmsg_alloc();
6082         if (!msg)
6083                 return -ENOMEM;
6084
6085         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
6086
6087         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6088         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6089
6090         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
6091  nla_put_failure:
6092         return -ENOBUFS;
6093 }
6094
6095
6096 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
6097                                     int cw_min, int cw_max, int burst_time)
6098 {
6099         struct i802_bss *bss = priv;
6100         struct wpa_driver_nl80211_data *drv = bss->drv;
6101         struct nl_msg *msg;
6102         struct nlattr *txq, *params;
6103
6104         msg = nlmsg_alloc();
6105         if (!msg)
6106                 return -1;
6107
6108         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6109
6110         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6111
6112         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
6113         if (!txq)
6114                 goto nla_put_failure;
6115
6116         /* We are only sending parameters for a single TXQ at a time */
6117         params = nla_nest_start(msg, 1);
6118         if (!params)
6119                 goto nla_put_failure;
6120
6121         switch (queue) {
6122         case 0:
6123                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
6124                 break;
6125         case 1:
6126                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
6127                 break;
6128         case 2:
6129                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
6130                 break;
6131         case 3:
6132                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
6133                 break;
6134         }
6135         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6136          * 32 usec, so need to convert the value here. */
6137         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
6138         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
6139         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
6140         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
6141
6142         nla_nest_end(msg, params);
6143
6144         nla_nest_end(msg, txq);
6145
6146         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6147                 return 0;
6148  nla_put_failure:
6149         return -1;
6150 }
6151
6152
6153 static int i802_set_sta_vlan(void *priv, const u8 *addr,
6154                              const char *ifname, int vlan_id)
6155 {
6156         struct i802_bss *bss = priv;
6157         struct wpa_driver_nl80211_data *drv = bss->drv;
6158         struct nl_msg *msg;
6159         int ret = -ENOBUFS;
6160
6161         msg = nlmsg_alloc();
6162         if (!msg)
6163                 return -ENOMEM;
6164
6165         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6166
6167         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6168                     if_nametoindex(bss->ifname));
6169         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6170         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
6171                     if_nametoindex(ifname));
6172
6173         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6174         if (ret < 0) {
6175                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6176                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6177                            MAC2STR(addr), ifname, vlan_id, ret,
6178                            strerror(-ret));
6179         }
6180  nla_put_failure:
6181         return ret;
6182 }
6183
6184
6185 static int i802_get_inact_sec(void *priv, const u8 *addr)
6186 {
6187         struct hostap_sta_driver_data data;
6188         int ret;
6189
6190         data.inactive_msec = (unsigned long) -1;
6191         ret = i802_read_sta_data(priv, &data, addr);
6192         if (ret || data.inactive_msec == (unsigned long) -1)
6193                 return -1;
6194         return data.inactive_msec / 1000;
6195 }
6196
6197
6198 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6199 {
6200 #if 0
6201         /* TODO */
6202 #endif
6203         return 0;
6204 }
6205
6206
6207 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6208                            int reason)
6209 {
6210         struct i802_bss *bss = priv;
6211         struct ieee80211_mgmt mgmt;
6212
6213         memset(&mgmt, 0, sizeof(mgmt));
6214         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6215                                           WLAN_FC_STYPE_DEAUTH);
6216         memcpy(mgmt.da, addr, ETH_ALEN);
6217         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6218         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6219         mgmt.u.deauth.reason_code = host_to_le16(reason);
6220         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6221                                             IEEE80211_HDRLEN +
6222                                             sizeof(mgmt.u.deauth));
6223 }
6224
6225
6226 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6227                              int reason)
6228 {
6229         struct i802_bss *bss = priv;
6230         struct ieee80211_mgmt mgmt;
6231
6232         memset(&mgmt, 0, sizeof(mgmt));
6233         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6234                                           WLAN_FC_STYPE_DISASSOC);
6235         memcpy(mgmt.da, addr, ETH_ALEN);
6236         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6237         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6238         mgmt.u.disassoc.reason_code = host_to_le16(reason);
6239         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6240                                             IEEE80211_HDRLEN +
6241                                             sizeof(mgmt.u.disassoc));
6242 }
6243
6244 #endif /* HOSTAPD || CONFIG_AP */
6245
6246 #ifdef HOSTAPD
6247
6248 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6249 {
6250         int i;
6251         int *old;
6252
6253         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6254                    ifidx);
6255         for (i = 0; i < drv->num_if_indices; i++) {
6256                 if (drv->if_indices[i] == 0) {
6257                         drv->if_indices[i] = ifidx;
6258                         return;
6259                 }
6260         }
6261
6262         if (drv->if_indices != drv->default_if_indices)
6263                 old = drv->if_indices;
6264         else
6265                 old = NULL;
6266
6267         drv->if_indices = os_realloc(old,
6268                                      sizeof(int) * (drv->num_if_indices + 1));
6269         if (!drv->if_indices) {
6270                 if (!old)
6271                         drv->if_indices = drv->default_if_indices;
6272                 else
6273                         drv->if_indices = old;
6274                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6275                            "interfaces");
6276                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6277                 return;
6278         } else if (!old)
6279                 os_memcpy(drv->if_indices, drv->default_if_indices,
6280                           sizeof(drv->default_if_indices));
6281         drv->if_indices[drv->num_if_indices] = ifidx;
6282         drv->num_if_indices++;
6283 }
6284
6285
6286 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6287 {
6288         int i;
6289
6290         for (i = 0; i < drv->num_if_indices; i++) {
6291                 if (drv->if_indices[i] == ifidx) {
6292                         drv->if_indices[i] = 0;
6293                         break;
6294                 }
6295         }
6296 }
6297
6298
6299 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6300 {
6301         int i;
6302
6303         for (i = 0; i < drv->num_if_indices; i++)
6304                 if (drv->if_indices[i] == ifidx)
6305                         return 1;
6306
6307         return 0;
6308 }
6309
6310
6311 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6312                             const char *bridge_ifname)
6313 {
6314         struct i802_bss *bss = priv;
6315         struct wpa_driver_nl80211_data *drv = bss->drv;
6316         char name[IFNAMSIZ + 1];
6317
6318         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6319         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6320                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6321         if (val) {
6322                 if (!if_nametoindex(name)) {
6323                         if (nl80211_create_iface(drv, name,
6324                                                  NL80211_IFTYPE_AP_VLAN,
6325                                                  NULL, 1) < 0)
6326                                 return -1;
6327                         if (bridge_ifname &&
6328                             linux_br_add_if(drv->global->ioctl_sock,
6329                                             bridge_ifname, name) < 0)
6330                                 return -1;
6331                 }
6332                 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
6333                 return i802_set_sta_vlan(priv, addr, name, 0);
6334         } else {
6335                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6336                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
6337                                                     name);
6338         }
6339 }
6340
6341
6342 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6343 {
6344         struct wpa_driver_nl80211_data *drv = eloop_ctx;
6345         struct sockaddr_ll lladdr;
6346         unsigned char buf[3000];
6347         int len;
6348         socklen_t fromlen = sizeof(lladdr);
6349
6350         len = recvfrom(sock, buf, sizeof(buf), 0,
6351                        (struct sockaddr *)&lladdr, &fromlen);
6352         if (len < 0) {
6353                 perror("recv");
6354                 return;
6355         }
6356
6357         if (have_ifidx(drv, lladdr.sll_ifindex))
6358                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6359 }
6360
6361
6362 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6363                              struct i802_bss *bss,
6364                              const char *brname, const char *ifname)
6365 {
6366         int ifindex;
6367         char in_br[IFNAMSIZ];
6368
6369         os_strlcpy(bss->brname, brname, IFNAMSIZ);
6370         ifindex = if_nametoindex(brname);
6371         if (ifindex == 0) {
6372                 /*
6373                  * Bridge was configured, but the bridge device does
6374                  * not exist. Try to add it now.
6375                  */
6376                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6377                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6378                                    "bridge interface %s: %s",
6379                                    brname, strerror(errno));
6380                         return -1;
6381                 }
6382                 bss->added_bridge = 1;
6383                 add_ifidx(drv, if_nametoindex(brname));
6384         }
6385
6386         if (linux_br_get(in_br, ifname) == 0) {
6387                 if (os_strcmp(in_br, brname) == 0)
6388                         return 0; /* already in the bridge */
6389
6390                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6391                            "bridge %s", ifname, in_br);
6392                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6393                     0) {
6394                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
6395                                    "remove interface %s from bridge "
6396                                    "%s: %s",
6397                                    ifname, brname, strerror(errno));
6398                         return -1;
6399                 }
6400         }
6401
6402         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6403                    ifname, brname);
6404         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6405                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6406                            "into bridge %s: %s",
6407                            ifname, brname, strerror(errno));
6408                 return -1;
6409         }
6410         bss->added_if_into_bridge = 1;
6411
6412         return 0;
6413 }
6414
6415
6416 static void *i802_init(struct hostapd_data *hapd,
6417                        struct wpa_init_params *params)
6418 {
6419         struct wpa_driver_nl80211_data *drv;
6420         struct i802_bss *bss;
6421         size_t i;
6422         char brname[IFNAMSIZ];
6423         int ifindex, br_ifindex;
6424         int br_added = 0;
6425
6426         bss = wpa_driver_nl80211_init(hapd, params->ifname,
6427                                       params->global_priv);
6428         if (bss == NULL)
6429                 return NULL;
6430
6431         drv = bss->drv;
6432         drv->nlmode = NL80211_IFTYPE_AP;
6433         drv->eapol_sock = -1;
6434
6435         if (linux_br_get(brname, params->ifname) == 0) {
6436                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6437                            params->ifname, brname);
6438                 br_ifindex = if_nametoindex(brname);
6439         } else {
6440                 brname[0] = '\0';
6441                 br_ifindex = 0;
6442         }
6443
6444         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
6445         drv->if_indices = drv->default_if_indices;
6446         for (i = 0; i < params->num_bridge; i++) {
6447                 if (params->bridge[i]) {
6448                         ifindex = if_nametoindex(params->bridge[i]);
6449                         if (ifindex)
6450                                 add_ifidx(drv, ifindex);
6451                         if (ifindex == br_ifindex)
6452                                 br_added = 1;
6453                 }
6454         }
6455         if (!br_added && br_ifindex &&
6456             (params->num_bridge == 0 || !params->bridge[0]))
6457                 add_ifidx(drv, br_ifindex);
6458
6459         /* start listening for EAPOL on the default AP interface */
6460         add_ifidx(drv, drv->ifindex);
6461
6462         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
6463                 goto failed;
6464
6465         if (params->bssid) {
6466                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6467                                        params->bssid))
6468                         goto failed;
6469         }
6470
6471         if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
6472                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
6473                            "into AP mode", bss->ifname);
6474                 goto failed;
6475         }
6476
6477         if (params->num_bridge && params->bridge[0] &&
6478             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6479                 goto failed;
6480
6481         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
6482                 goto failed;
6483
6484         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6485         if (drv->eapol_sock < 0) {
6486                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
6487                 goto failed;
6488         }
6489
6490         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6491         {
6492                 printf("Could not register read socket for eapol\n");
6493                 goto failed;
6494         }
6495
6496         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6497                                params->own_addr))
6498                 goto failed;
6499
6500         return bss;
6501
6502 failed:
6503         wpa_driver_nl80211_deinit(bss);
6504         return NULL;
6505 }
6506
6507
6508 static void i802_deinit(void *priv)
6509 {
6510         wpa_driver_nl80211_deinit(priv);
6511 }
6512
6513 #endif /* HOSTAPD */
6514
6515
6516 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6517         enum wpa_driver_if_type type)
6518 {
6519         switch (type) {
6520         case WPA_IF_STATION:
6521                 return NL80211_IFTYPE_STATION;
6522         case WPA_IF_P2P_CLIENT:
6523         case WPA_IF_P2P_GROUP:
6524                 return NL80211_IFTYPE_P2P_CLIENT;
6525         case WPA_IF_AP_VLAN:
6526                 return NL80211_IFTYPE_AP_VLAN;
6527         case WPA_IF_AP_BSS:
6528                 return NL80211_IFTYPE_AP;
6529         case WPA_IF_P2P_GO:
6530                 return NL80211_IFTYPE_P2P_GO;
6531         }
6532         return -1;
6533 }
6534
6535
6536 #ifdef CONFIG_P2P
6537
6538 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6539 {
6540         struct wpa_driver_nl80211_data *drv;
6541         dl_list_for_each(drv, &global->interfaces,
6542                          struct wpa_driver_nl80211_data, list) {
6543                 if (os_memcmp(addr, drv->addr, ETH_ALEN) == 0)
6544                         return 1;
6545         }
6546         return 0;
6547 }
6548
6549
6550 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6551                                       u8 *new_addr)
6552 {
6553         unsigned int idx;
6554
6555         if (!drv->global)
6556                 return -1;
6557
6558         os_memcpy(new_addr, drv->addr, ETH_ALEN);
6559         for (idx = 0; idx < 64; idx++) {
6560                 new_addr[0] = drv->addr[0] | 0x02;
6561                 new_addr[0] ^= idx << 2;
6562                 if (!nl80211_addr_in_use(drv->global, new_addr))
6563                         break;
6564         }
6565         if (idx == 64)
6566                 return -1;
6567
6568         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6569                    MACSTR, MAC2STR(new_addr));
6570
6571         return 0;
6572 }
6573
6574 #endif /* CONFIG_P2P */
6575
6576
6577 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6578                                      const char *ifname, const u8 *addr,
6579                                      void *bss_ctx, void **drv_priv,
6580                                      char *force_ifname, u8 *if_addr,
6581                                      const char *bridge)
6582 {
6583         struct i802_bss *bss = priv;
6584         struct wpa_driver_nl80211_data *drv = bss->drv;
6585         int ifidx;
6586 #ifdef HOSTAPD
6587         struct i802_bss *new_bss = NULL;
6588
6589         if (type == WPA_IF_AP_BSS) {
6590                 new_bss = os_zalloc(sizeof(*new_bss));
6591                 if (new_bss == NULL)
6592                         return -1;
6593         }
6594 #endif /* HOSTAPD */
6595
6596         if (addr)
6597                 os_memcpy(if_addr, addr, ETH_ALEN);
6598         ifidx = nl80211_create_iface(drv, ifname,
6599                                      wpa_driver_nl80211_if_type(type), addr,
6600                                      0);
6601         if (ifidx < 0) {
6602 #ifdef HOSTAPD
6603                 os_free(new_bss);
6604 #endif /* HOSTAPD */
6605                 return -1;
6606         }
6607
6608         if (!addr &&
6609             linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6610                                if_addr) < 0) {
6611                 nl80211_remove_iface(drv, ifidx);
6612                 return -1;
6613         }
6614
6615 #ifdef CONFIG_P2P
6616         if (!addr &&
6617             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6618              type == WPA_IF_P2P_GO)) {
6619                 /* Enforce unique P2P Interface Address */
6620                 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
6621
6622                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6623                                        own_addr) < 0 ||
6624                     linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6625                                        new_addr) < 0) {
6626                         nl80211_remove_iface(drv, ifidx);
6627                         return -1;
6628                 }
6629                 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
6630                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6631                                    "for P2P group interface");
6632                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6633                                 nl80211_remove_iface(drv, ifidx);
6634                                 return -1;
6635                         }
6636                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6637                                                new_addr) < 0) {
6638                                 nl80211_remove_iface(drv, ifidx);
6639                                 return -1;
6640                         }
6641                 }
6642                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6643         }
6644 #endif /* CONFIG_P2P */
6645
6646 #ifdef HOSTAPD
6647         if (bridge &&
6648             i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6649                 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6650                            "interface %s to a bridge %s", ifname, bridge);
6651                 nl80211_remove_iface(drv, ifidx);
6652                 os_free(new_bss);
6653                 return -1;
6654         }
6655
6656         if (type == WPA_IF_AP_BSS) {
6657                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6658                 {
6659                         nl80211_remove_iface(drv, ifidx);
6660                         os_free(new_bss);
6661                         return -1;
6662                 }
6663                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6664                 new_bss->ifindex = ifidx;
6665                 new_bss->drv = drv;
6666                 new_bss->next = drv->first_bss.next;
6667                 drv->first_bss.next = new_bss;
6668                 if (drv_priv)
6669                         *drv_priv = new_bss;
6670         }
6671 #endif /* HOSTAPD */
6672
6673         if (drv->global)
6674                 drv->global->if_add_ifindex = ifidx;
6675
6676         return 0;
6677 }
6678
6679
6680 static int wpa_driver_nl80211_if_remove(void *priv,
6681                                         enum wpa_driver_if_type type,
6682                                         const char *ifname)
6683 {
6684         struct i802_bss *bss = priv;
6685         struct wpa_driver_nl80211_data *drv = bss->drv;
6686         int ifindex = if_nametoindex(ifname);
6687
6688         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
6689                    __func__, type, ifname, ifindex);
6690         if (ifindex <= 0)
6691                 return -1;
6692
6693 #ifdef HOSTAPD
6694         if (bss->added_if_into_bridge) {
6695                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6696                                     bss->ifname) < 0)
6697                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6698                                    "interface %s from bridge %s: %s",
6699                                    bss->ifname, bss->brname, strerror(errno));
6700         }
6701         if (bss->added_bridge) {
6702                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6703                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6704                                    "bridge %s: %s",
6705                                    bss->brname, strerror(errno));
6706         }
6707 #endif /* HOSTAPD */
6708
6709         nl80211_remove_iface(drv, ifindex);
6710
6711 #ifdef HOSTAPD
6712         if (type != WPA_IF_AP_BSS)
6713                 return 0;
6714
6715         if (bss != &drv->first_bss) {
6716                 struct i802_bss *tbss;
6717
6718                 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
6719                         if (tbss->next == bss) {
6720                                 tbss->next = bss->next;
6721                                 os_free(bss);
6722                                 bss = NULL;
6723                                 break;
6724                         }
6725                 }
6726                 if (bss)
6727                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6728                                    "BSS %p in the list", __func__, bss);
6729         }
6730 #endif /* HOSTAPD */
6731
6732         return 0;
6733 }
6734
6735
6736 static int cookie_handler(struct nl_msg *msg, void *arg)
6737 {
6738         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6739         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6740         u64 *cookie = arg;
6741         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6742                   genlmsg_attrlen(gnlh, 0), NULL);
6743         if (tb[NL80211_ATTR_COOKIE])
6744                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6745         return NL_SKIP;
6746 }
6747
6748
6749 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
6750                                   unsigned int freq, unsigned int wait,
6751                                   const u8 *buf, size_t buf_len,
6752                                   u64 *cookie_out, int no_cck)
6753 {
6754         struct nl_msg *msg;
6755         u64 cookie;
6756         int ret = -1;
6757
6758         msg = nlmsg_alloc();
6759         if (!msg)
6760                 return -1;
6761
6762         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
6763
6764         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6765         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6766         if (wait)
6767                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
6768         NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
6769         if (no_cck)
6770                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
6771
6772         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
6773
6774         cookie = 0;
6775         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6776         msg = NULL;
6777         if (ret) {
6778                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6779                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6780                            freq, wait);
6781                 goto nla_put_failure;
6782         }
6783         wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
6784                    "cookie 0x%llx", (long long unsigned int) cookie);
6785
6786         if (cookie_out)
6787                 *cookie_out = cookie;
6788
6789 nla_put_failure:
6790         nlmsg_free(msg);
6791         return ret;
6792 }
6793
6794
6795 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
6796                                           unsigned int wait_time,
6797                                           const u8 *dst, const u8 *src,
6798                                           const u8 *bssid,
6799                                           const u8 *data, size_t data_len,
6800                                           int no_cck)
6801 {
6802         struct i802_bss *bss = priv;
6803         struct wpa_driver_nl80211_data *drv = bss->drv;
6804         int ret = -1;
6805         u8 *buf;
6806         struct ieee80211_hdr *hdr;
6807
6808         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6809                    "wait=%d ms no_cck=%d)", drv->ifindex, wait_time, no_cck);
6810
6811         buf = os_zalloc(24 + data_len);
6812         if (buf == NULL)
6813                 return ret;
6814         os_memcpy(buf + 24, data, data_len);
6815         hdr = (struct ieee80211_hdr *) buf;
6816         hdr->frame_control =
6817                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6818         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6819         os_memcpy(hdr->addr2, src, ETH_ALEN);
6820         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6821
6822         if (is_ap_interface(drv->nlmode))
6823                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
6824         else
6825                 ret = nl80211_send_frame_cmd(drv, freq, wait_time, buf,
6826                                              24 + data_len,
6827                                              &drv->send_action_cookie,
6828                                              no_cck);
6829
6830         os_free(buf);
6831         return ret;
6832 }
6833
6834
6835 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6836 {
6837         struct i802_bss *bss = priv;
6838         struct wpa_driver_nl80211_data *drv = bss->drv;
6839         struct nl_msg *msg;
6840         int ret;
6841
6842         msg = nlmsg_alloc();
6843         if (!msg)
6844                 return;
6845
6846         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
6847
6848         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6849         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6850
6851         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6852         msg = NULL;
6853         if (ret)
6854                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6855                            "(%s)", ret, strerror(-ret));
6856
6857  nla_put_failure:
6858         nlmsg_free(msg);
6859 }
6860
6861
6862 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6863                                                 unsigned int duration)
6864 {
6865         struct i802_bss *bss = priv;
6866         struct wpa_driver_nl80211_data *drv = bss->drv;
6867         struct nl_msg *msg;
6868         int ret;
6869         u64 cookie;
6870
6871         msg = nlmsg_alloc();
6872         if (!msg)
6873                 return -1;
6874
6875         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
6876
6877         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6878         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6879         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6880
6881         cookie = 0;
6882         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6883         if (ret == 0) {
6884                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6885                            "0x%llx for freq=%u MHz duration=%u",
6886                            (long long unsigned int) cookie, freq, duration);
6887                 drv->remain_on_chan_cookie = cookie;
6888                 drv->pending_remain_on_chan = 1;
6889                 return 0;
6890         }
6891         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6892                    "(freq=%d duration=%u): %d (%s)",
6893                    freq, duration, ret, strerror(-ret));
6894 nla_put_failure:
6895         return -1;
6896 }
6897
6898
6899 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6900 {
6901         struct i802_bss *bss = priv;
6902         struct wpa_driver_nl80211_data *drv = bss->drv;
6903         struct nl_msg *msg;
6904         int ret;
6905
6906         if (!drv->pending_remain_on_chan) {
6907                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6908                            "to cancel");
6909                 return -1;
6910         }
6911
6912         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6913                    "0x%llx",
6914                    (long long unsigned int) drv->remain_on_chan_cookie);
6915
6916         msg = nlmsg_alloc();
6917         if (!msg)
6918                 return -1;
6919
6920         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6921
6922         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6923         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
6924
6925         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6926         if (ret == 0)
6927                 return 0;
6928         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6929                    "%d (%s)", ret, strerror(-ret));
6930 nla_put_failure:
6931         return -1;
6932 }
6933
6934
6935 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
6936 {
6937         struct i802_bss *bss = priv;
6938         struct wpa_driver_nl80211_data *drv = bss->drv;
6939
6940         if (!report) {
6941                 if (drv->nl_preq.handle) {
6942                         eloop_unregister_read_sock(
6943                                 nl_socket_get_fd(drv->nl_preq.handle));
6944                         nl_destroy_handles(&drv->nl_preq);
6945                 }
6946                 return 0;
6947         }
6948
6949         if (drv->nl_preq.handle) {
6950                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6951                            "already on!");
6952                 return 0;
6953         }
6954
6955         if (nl_create_handles(&drv->nl_preq, drv->global->nl_cb, "preq"))
6956                 return -1;
6957
6958         if (nl80211_register_frame(drv, drv->nl_preq.handle,
6959                                    (WLAN_FC_TYPE_MGMT << 2) |
6960                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6961                                    NULL, 0) < 0)
6962                 goto out_err;
6963
6964         eloop_register_read_sock(nl_socket_get_fd(drv->nl_preq.handle),
6965                                  wpa_driver_nl80211_event_receive, drv,
6966                                  drv->nl_preq.handle);
6967
6968         return 0;
6969
6970  out_err:
6971         nl_destroy_handles(&drv->nl_preq);
6972         return -1;
6973 }
6974
6975
6976 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6977                                      int ifindex, int disabled)
6978 {
6979         struct nl_msg *msg;
6980         struct nlattr *bands, *band;
6981         int ret;
6982
6983         msg = nlmsg_alloc();
6984         if (!msg)
6985                 return -1;
6986
6987         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
6988         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
6989
6990         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6991         if (!bands)
6992                 goto nla_put_failure;
6993
6994         /*
6995          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6996          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6997          * rates. All 5 GHz rates are left enabled.
6998          */
6999         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7000         if (!band)
7001                 goto nla_put_failure;
7002         if (disabled) {
7003                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7004                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7005         }
7006         nla_nest_end(msg, band);
7007
7008         nla_nest_end(msg, bands);
7009
7010         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7011         msg = NULL;
7012         if (ret) {
7013                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7014                            "(%s)", ret, strerror(-ret));
7015         }
7016
7017         return ret;
7018
7019 nla_put_failure:
7020         nlmsg_free(msg);
7021         return -1;
7022 }
7023
7024
7025 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
7026 {
7027         struct i802_bss *bss = priv;
7028         struct wpa_driver_nl80211_data *drv = bss->drv;
7029         drv->disable_11b_rates = disabled;
7030         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
7031 }
7032
7033
7034 static int wpa_driver_nl80211_deinit_ap(void *priv)
7035 {
7036         struct i802_bss *bss = priv;
7037         struct wpa_driver_nl80211_data *drv = bss->drv;
7038         if (!is_ap_interface(drv->nlmode))
7039                 return -1;
7040         wpa_driver_nl80211_del_beacon(drv);
7041         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7042 }
7043
7044
7045 static void wpa_driver_nl80211_resume(void *priv)
7046 {
7047         struct i802_bss *bss = priv;
7048         struct wpa_driver_nl80211_data *drv = bss->drv;
7049         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
7050                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
7051                            "resume event");
7052         }
7053 }
7054
7055
7056 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7057                                   const u8 *ies, size_t ies_len)
7058 {
7059         struct i802_bss *bss = priv;
7060         struct wpa_driver_nl80211_data *drv = bss->drv;
7061         int ret;
7062         u8 *data, *pos;
7063         size_t data_len;
7064         u8 own_addr[ETH_ALEN];
7065
7066         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7067                                own_addr) < 0)
7068                 return -1;
7069
7070         if (action != 1) {
7071                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7072                            "action %d", action);
7073                 return -1;
7074         }
7075
7076         /*
7077          * Action frame payload:
7078          * Category[1] = 6 (Fast BSS Transition)
7079          * Action[1] = 1 (Fast BSS Transition Request)
7080          * STA Address
7081          * Target AP Address
7082          * FT IEs
7083          */
7084
7085         data_len = 2 + 2 * ETH_ALEN + ies_len;
7086         data = os_malloc(data_len);
7087         if (data == NULL)
7088                 return -1;
7089         pos = data;
7090         *pos++ = 0x06; /* FT Action category */
7091         *pos++ = action;
7092         os_memcpy(pos, own_addr, ETH_ALEN);
7093         pos += ETH_ALEN;
7094         os_memcpy(pos, target_ap, ETH_ALEN);
7095         pos += ETH_ALEN;
7096         os_memcpy(pos, ies, ies_len);
7097
7098         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7099                                              drv->bssid, own_addr, drv->bssid,
7100                                              data, data_len, 0);
7101         os_free(data);
7102
7103         return ret;
7104 }
7105
7106
7107 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7108 {
7109         struct i802_bss *bss = priv;
7110         struct wpa_driver_nl80211_data *drv = bss->drv;
7111         struct nl_msg *msg, *cqm = NULL;
7112
7113         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7114                    "hysteresis=%d", threshold, hysteresis);
7115
7116         msg = nlmsg_alloc();
7117         if (!msg)
7118                 return -1;
7119
7120         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
7121
7122         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7123
7124         cqm = nlmsg_alloc();
7125         if (cqm == NULL)
7126                 return -1;
7127
7128         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
7129         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
7130         nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
7131
7132         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7133                 return 0;
7134         msg = NULL;
7135
7136 nla_put_failure:
7137         if (cqm)
7138                 nlmsg_free(cqm);
7139         nlmsg_free(msg);
7140         return -1;
7141 }
7142
7143
7144 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7145 {
7146         struct i802_bss *bss = priv;
7147         struct wpa_driver_nl80211_data *drv = bss->drv;
7148         int res;
7149
7150         os_memset(si, 0, sizeof(*si));
7151         res = nl80211_get_link_signal(drv, si);
7152         if (res != 0)
7153                 return res;
7154
7155         return nl80211_get_link_noise(drv, si);
7156 }
7157
7158
7159 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7160                               int encrypt)
7161 {
7162         struct i802_bss *bss = priv;
7163         struct wpa_driver_nl80211_data *drv = bss->drv;
7164         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
7165 }
7166
7167
7168 static int nl80211_set_param(void *priv, const char *param)
7169 {
7170         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7171         if (param == NULL)
7172                 return 0;
7173
7174 #ifdef CONFIG_P2P
7175         if (os_strstr(param, "use_p2p_group_interface=1")) {
7176                 struct i802_bss *bss = priv;
7177                 struct wpa_driver_nl80211_data *drv = bss->drv;
7178
7179                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7180                            "interface");
7181                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7182                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7183         }
7184 #endif /* CONFIG_P2P */
7185
7186         return 0;
7187 }
7188
7189
7190 static void * nl80211_global_init(void)
7191 {
7192         struct nl80211_global *global;
7193         struct netlink_config *cfg;
7194
7195         global = os_zalloc(sizeof(*global));
7196         if (global == NULL)
7197                 return NULL;
7198         global->ioctl_sock = -1;
7199         dl_list_init(&global->interfaces);
7200         global->if_add_ifindex = -1;
7201
7202         cfg = os_zalloc(sizeof(*cfg));
7203         if (cfg == NULL)
7204                 goto err;
7205
7206         cfg->ctx = global;
7207         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7208         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7209         global->netlink = netlink_init(cfg);
7210         if (global->netlink == NULL) {
7211                 os_free(cfg);
7212                 goto err;
7213         }
7214
7215         if (wpa_driver_nl80211_init_nl_global(global) < 0)
7216                 goto err;
7217
7218         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7219         if (global->ioctl_sock < 0) {
7220                 perror("socket(PF_INET,SOCK_DGRAM)");
7221                 goto err;
7222         }
7223
7224         return global;
7225
7226 err:
7227         nl80211_global_deinit(global);
7228         return NULL;
7229 }
7230
7231
7232 static void nl80211_global_deinit(void *priv)
7233 {
7234         struct nl80211_global *global = priv;
7235         if (global == NULL)
7236                 return;
7237         if (!dl_list_empty(&global->interfaces)) {
7238                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7239                            "nl80211_global_deinit",
7240                            dl_list_len(&global->interfaces));
7241         }
7242
7243         if (global->netlink)
7244                 netlink_deinit(global->netlink);
7245
7246         if (global->nl80211)
7247                 genl_family_put(global->nl80211);
7248         nl_destroy_handles(&global->nl);
7249
7250         if (global->nl_cb)
7251                 nl_cb_put(global->nl_cb);
7252
7253         if (global->ioctl_sock >= 0)
7254                 close(global->ioctl_sock);
7255
7256         os_free(global);
7257 }
7258
7259
7260 static const char * nl80211_get_radio_name(void *priv)
7261 {
7262         struct i802_bss *bss = priv;
7263         struct wpa_driver_nl80211_data *drv = bss->drv;
7264         return drv->phyname;
7265 }
7266
7267
7268 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7269                          const u8 *pmkid)
7270 {
7271         struct nl_msg *msg;
7272
7273         msg = nlmsg_alloc();
7274         if (!msg)
7275                 return -ENOMEM;
7276
7277         nl80211_cmd(bss->drv, msg, 0, cmd);
7278
7279         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7280         if (pmkid)
7281                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
7282         if (bssid)
7283                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7284
7285         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7286  nla_put_failure:
7287         return -ENOBUFS;
7288 }
7289
7290
7291 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7292 {
7293         struct i802_bss *bss = priv;
7294         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7295         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7296 }
7297
7298
7299 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7300 {
7301         struct i802_bss *bss = priv;
7302         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7303                    MAC2STR(bssid));
7304         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7305 }
7306
7307
7308 static int nl80211_flush_pmkid(void *priv)
7309 {
7310         struct i802_bss *bss = priv;
7311         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7312         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7313 }
7314
7315
7316 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7317                                    const u8 *replay_ctr)
7318 {
7319         struct i802_bss *bss = priv;
7320         struct wpa_driver_nl80211_data *drv = bss->drv;
7321         struct nlattr *replay_nested;
7322         struct nl_msg *msg;
7323
7324         msg = nlmsg_alloc();
7325         if (!msg)
7326                 return;
7327
7328         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7329
7330         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7331
7332         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7333         if (!replay_nested)
7334                 goto nla_put_failure;
7335
7336         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
7337         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
7338         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7339                 replay_ctr);
7340
7341         nla_nest_end(msg, replay_nested);
7342
7343         send_and_recv_msgs(drv, msg, NULL, NULL);
7344         return;
7345  nla_put_failure:
7346         nlmsg_free(msg);
7347 }
7348
7349
7350 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7351                                 int qos)
7352 {
7353         struct i802_bss *bss = priv;
7354         struct {
7355                 struct ieee80211_hdr hdr;
7356                 u16 qos_ctl;
7357         } STRUCT_PACKED nulldata;
7358         size_t size;
7359
7360         /* Send data frame to poll STA and check whether this frame is ACKed */
7361
7362         os_memset(&nulldata, 0, sizeof(nulldata));
7363
7364         if (qos) {
7365                 nulldata.hdr.frame_control =
7366                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7367                                      WLAN_FC_STYPE_QOS_NULL);
7368                 size = sizeof(nulldata);
7369         } else {
7370                 nulldata.hdr.frame_control =
7371                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7372                                      WLAN_FC_STYPE_NULLFUNC);
7373                 size = sizeof(struct ieee80211_hdr);
7374         }
7375
7376         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7377         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7378         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7379         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7380
7381         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size) < 0)
7382                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7383                            "send poll frame");
7384 }
7385
7386
7387 #ifdef CONFIG_TDLS
7388
7389 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7390                                   u8 dialog_token, u16 status_code,
7391                                   const u8 *buf, size_t len)
7392 {
7393         struct i802_bss *bss = priv;
7394         struct wpa_driver_nl80211_data *drv = bss->drv;
7395         struct nl_msg *msg;
7396
7397         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7398                 return -EOPNOTSUPP;
7399
7400         if (!dst)
7401                 return -EINVAL;
7402
7403         msg = nlmsg_alloc();
7404         if (!msg)
7405                 return -ENOMEM;
7406
7407         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
7408         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7409         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
7410         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
7411         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
7412         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
7413         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
7414
7415         return send_and_recv_msgs(drv, msg, NULL, NULL);
7416
7417 nla_put_failure:
7418         nlmsg_free(msg);
7419         return -ENOBUFS;
7420 }
7421
7422
7423 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7424 {
7425         struct i802_bss *bss = priv;
7426         struct wpa_driver_nl80211_data *drv = bss->drv;
7427         struct nl_msg *msg;
7428         enum nl80211_tdls_operation nl80211_oper;
7429
7430         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7431                 return -EOPNOTSUPP;
7432
7433         switch (oper) {
7434         case TDLS_DISCOVERY_REQ:
7435                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7436                 break;
7437         case TDLS_SETUP:
7438                 nl80211_oper = NL80211_TDLS_SETUP;
7439                 break;
7440         case TDLS_TEARDOWN:
7441                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7442                 break;
7443         case TDLS_ENABLE_LINK:
7444                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7445                 break;
7446         case TDLS_DISABLE_LINK:
7447                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7448                 break;
7449         case TDLS_ENABLE:
7450                 return 0;
7451         case TDLS_DISABLE:
7452                 return 0;
7453         default:
7454                 return -EINVAL;
7455         }
7456
7457         msg = nlmsg_alloc();
7458         if (!msg)
7459                 return -ENOMEM;
7460
7461         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
7462         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
7463         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7464         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7465
7466         return send_and_recv_msgs(drv, msg, NULL, NULL);
7467
7468 nla_put_failure:
7469         nlmsg_free(msg);
7470         return -ENOBUFS;
7471 }
7472
7473 #endif /* CONFIG TDLS */
7474
7475
7476 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
7477         .name = "nl80211",
7478         .desc = "Linux nl80211/cfg80211",
7479         .get_bssid = wpa_driver_nl80211_get_bssid,
7480         .get_ssid = wpa_driver_nl80211_get_ssid,
7481         .set_key = wpa_driver_nl80211_set_key,
7482         .scan2 = wpa_driver_nl80211_scan,
7483         .sched_scan = wpa_driver_nl80211_sched_scan,
7484         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
7485         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
7486         .deauthenticate = wpa_driver_nl80211_deauthenticate,
7487         .disassociate = wpa_driver_nl80211_disassociate,
7488         .authenticate = wpa_driver_nl80211_authenticate,
7489         .associate = wpa_driver_nl80211_associate,
7490         .global_init = nl80211_global_init,
7491         .global_deinit = nl80211_global_deinit,
7492         .init2 = wpa_driver_nl80211_init,
7493         .deinit = wpa_driver_nl80211_deinit,
7494         .get_capa = wpa_driver_nl80211_get_capa,
7495         .set_operstate = wpa_driver_nl80211_set_operstate,
7496         .set_supp_port = wpa_driver_nl80211_set_supp_port,
7497         .set_country = wpa_driver_nl80211_set_country,
7498         .set_ap = wpa_driver_nl80211_set_ap,
7499         .if_add = wpa_driver_nl80211_if_add,
7500         .if_remove = wpa_driver_nl80211_if_remove,
7501         .send_mlme = wpa_driver_nl80211_send_mlme,
7502         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
7503         .sta_add = wpa_driver_nl80211_sta_add,
7504         .sta_remove = wpa_driver_nl80211_sta_remove,
7505         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
7506         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
7507 #ifdef HOSTAPD
7508         .hapd_init = i802_init,
7509         .hapd_deinit = i802_deinit,
7510         .set_wds_sta = i802_set_wds_sta,
7511 #endif /* HOSTAPD */
7512 #if defined(HOSTAPD) || defined(CONFIG_AP)
7513         .get_seqnum = i802_get_seqnum,
7514         .flush = i802_flush,
7515         .read_sta_data = i802_read_sta_data,
7516         .get_inact_sec = i802_get_inact_sec,
7517         .sta_clear_stats = i802_sta_clear_stats,
7518         .set_rts = i802_set_rts,
7519         .set_frag = i802_set_frag,
7520         .set_tx_queue_params = i802_set_tx_queue_params,
7521         .set_sta_vlan = i802_set_sta_vlan,
7522         .set_rate_sets = i802_set_rate_sets,
7523         .sta_deauth = i802_sta_deauth,
7524         .sta_disassoc = i802_sta_disassoc,
7525 #endif /* HOSTAPD || CONFIG_AP */
7526         .set_freq = i802_set_freq,
7527         .send_action = wpa_driver_nl80211_send_action,
7528         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
7529         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
7530         .cancel_remain_on_channel =
7531         wpa_driver_nl80211_cancel_remain_on_channel,
7532         .probe_req_report = wpa_driver_nl80211_probe_req_report,
7533         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
7534         .deinit_ap = wpa_driver_nl80211_deinit_ap,
7535         .resume = wpa_driver_nl80211_resume,
7536         .send_ft_action = nl80211_send_ft_action,
7537         .signal_monitor = nl80211_signal_monitor,
7538         .signal_poll = nl80211_signal_poll,
7539         .send_frame = nl80211_send_frame,
7540         .set_param = nl80211_set_param,
7541         .get_radio_name = nl80211_get_radio_name,
7542         .add_pmkid = nl80211_add_pmkid,
7543         .remove_pmkid = nl80211_remove_pmkid,
7544         .flush_pmkid = nl80211_flush_pmkid,
7545         .set_rekey_info = nl80211_set_rekey_info,
7546         .poll_client = nl80211_poll_client,
7547 #ifdef CONFIG_TDLS
7548         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
7549         .tdls_oper = nl80211_tdls_oper,
7550 #endif /* CONFIG_TDLS */
7551 };