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 <net/if.h>
  22 #include <netlink/genl/genl.h>
  23 #include <netlink/genl/family.h>
  24 #include <netlink/genl/ctrl.h>
  25 #include <netpacket/packet.h>
  26 #include <linux/filter.h>
  27 #include "nl80211_copy.h"
  28
  29 #include "common.h"
  30 #include "eloop.h"
  31 #include "common/ieee802_11_defs.h"
  32 #include "netlink.h"
  33 #include "linux_ioctl.h"
  34 #include "radiotap.h"
  35 #include "radiotap_iter.h"
  36 #include "driver.h"
  37
  38 #ifdef CONFIG_LIBNL20
  39 /* libnl 2.0 compatibility code */
  40 #define nl_handle nl_sock
  41 #define nl_handle_alloc_cb nl_socket_alloc_cb
  42 #define nl_handle_destroy nl_socket_free
  43 #endif /* CONFIG_LIBNL20 */
  44
  45
  46 #ifndef IFF_LOWER_UP
  47 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
  48 #endif
  49 #ifndef IFF_DORMANT
  50 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
  51 #endif
  52
  53 #ifndef IF_OPER_DORMANT
  54 #define IF_OPER_DORMANT 5
  55 #endif
  56 #ifndef IF_OPER_UP
  57 #define IF_OPER_UP 6
  58 #endif
  59
  60 struct i802_bss {
  61         struct wpa_driver_nl80211_data *drv;
  62         struct i802_bss *next;
  63         int ifindex;
  64         char ifname[IFNAMSIZ + 1];
  65         unsigned int beacon_set:1;
  66 };
  67
  68 struct wpa_driver_nl80211_data {
  69         void *ctx;
  70         struct netlink_data *netlink;
  71         int ioctl_sock; /* socket for ioctl() use */
  72         char brname[IFNAMSIZ];
  73         int ifindex;
  74         int if_removed;
  75         struct wpa_driver_capa capa;
  76         int has_capability;
  77
  78         int operstate;
  79
  80         int scan_complete_events;
  81
  82         struct nl_handle *nl_handle;
  83         struct nl_handle *nl_handle_event;
  84         struct nl_cache *nl_cache;
  85         struct nl_cache *nl_cache_event;
  86         struct nl_cb *nl_cb;
  87         struct genl_family *nl80211;
  88
  89         u8 auth_bssid[ETH_ALEN];
  90         u8 bssid[ETH_ALEN];
  91         int associated;
  92         u8 ssid[32];
  93         size_t ssid_len;
  94         int nlmode;
  95         int ap_scan_as_station;
  96         unsigned int assoc_freq;
  97
  98         int monitor_sock;
  99         int monitor_ifidx;
 100         int probe_req_report;
 101         int disable_11b_rates;
 102
 103         unsigned int pending_remain_on_chan:1;
 104         unsigned int pending_send_action:1;
 105         unsigned int added_bridge:1;
 106         unsigned int added_if_into_bridge:1;
 107
 108         u64 remain_on_chan_cookie;
 109         u64 send_action_cookie;
 110
 111         struct wpa_driver_scan_filter *filter_ssids;
 112         size_t num_filter_ssids;
 113
 114         struct i802_bss first_bss;
 115
 116 #ifdef HOSTAPD
 117         int eapol_sock; /* socket for EAPOL frames */
 118
 119         int default_if_indices[16];
 120         int *if_indices;
 121         int num_if_indices;
 122
 123         int last_freq;
 124         int last_freq_ht;
 125 #endif /* HOSTAPD */
 126 };
 127
 128
 129 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 130                                             void *timeout_ctx);
 131 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
 132 static int
 133 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 134 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 135                                    const u8 *addr, int cmd, u16 reason_code,
 136                                    int local_state_change);
 137 static void nl80211_remove_monitor_interface(
 138         struct wpa_driver_nl80211_data *drv);
 139
 140 #ifdef HOSTAPD
 141 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 142 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 143 static int wpa_driver_nl80211_if_remove(void *priv,
 144                                         enum wpa_driver_if_type type,
 145                                         const char *ifname);
 146 #endif /* HOSTAPD */
 147
 148 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 149 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
 150                                                         void *timeout_ctx);
 151 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 152                                      int ifindex, int disabled);
 153
 154
 155 /* nl80211 code */
 156 static int ack_handler(struct nl_msg *msg, void *arg)
 157 {
 158         int *err = arg;
 159         *err = 0;
 160         return NL_STOP;
 161 }
 162
 163 static int finish_handler(struct nl_msg *msg, void *arg)
 164 {
 165         int *ret = arg;
 166         *ret = 0;
 167         return NL_SKIP;
 168 }
 169
 170 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 171                          void *arg)
 172 {
 173         int *ret = arg;
 174         *ret = err->error;
 175         return NL_SKIP;
 176 }
 177
 178
 179 static int no_seq_check(struct nl_msg *msg, void *arg)
 180 {
 181         return NL_OK;
 182 }
 183
 184
 185 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
 186                          struct nl_handle *nl_handle, struct nl_msg *msg,
 187                          int (*valid_handler)(struct nl_msg *, void *),
 188                          void *valid_data)
 189 {
 190         struct nl_cb *cb;
 191         int err = -ENOMEM;
 192
 193         cb = nl_cb_clone(drv->nl_cb);
 194         if (!cb)
 195                 goto out;
 196
 197         err = nl_send_auto_complete(nl_handle, msg);
 198         if (err < 0)
 199                 goto out;
 200
 201         err = 1;
 202
 203         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 204         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 205         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 206
 207         if (valid_handler)
 208                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 209                           valid_handler, valid_data);
 210
 211         while (err > 0)
 212                 nl_recvmsgs(nl_handle, cb);
 213  out:
 214         nl_cb_put(cb);
 215         nlmsg_free(msg);
 216         return err;
 217 }
 218
 219
 220 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 221                               struct nl_msg *msg,
 222                               int (*valid_handler)(struct nl_msg *, void *),
 223                               void *valid_data)
 224 {
 225         return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
 226                              valid_data);
 227 }
 228
 229
 230 struct family_data {
 231         const char *group;
 232         int id;
 233 };
 234
 235
 236 static int family_handler(struct nl_msg *msg, void *arg)
 237 {
 238         struct family_data *res = arg;
 239         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 240         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 241         struct nlattr *mcgrp;
 242         int i;
 243
 244         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 245                   genlmsg_attrlen(gnlh, 0), NULL);
 246         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 247                 return NL_SKIP;
 248
 249         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 250                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 251                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 252                           nla_len(mcgrp), NULL);
 253                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 254                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 255                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 256                                res->group,
 257                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 258                         continue;
 259                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 260                 break;
 261         };
 262
 263         return NL_SKIP;
 264 }
 265
 266
 267 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 268                                const char *family, const char *group)
 269 {
 270         struct nl_msg *msg;
 271         int ret = -1;
 272         struct family_data res = { group, -ENOENT };
 273
 274         msg = nlmsg_alloc();
 275         if (!msg)
 276                 return -ENOMEM;
 277         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 278                     0, 0, CTRL_CMD_GETFAMILY, 0);
 279         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 280
 281         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 282         msg = NULL;
 283         if (ret == 0)
 284                 ret = res.id;
 285
 286 nla_put_failure:
 287         nlmsg_free(msg);
 288         return ret;
 289 }
 290
 291
 292 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 293 {
 294         struct i802_bss *bss = priv;
 295         struct wpa_driver_nl80211_data *drv = bss->drv;
 296         if (!drv->associated)
 297                 return -1;
 298         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 299         return 0;
 300 }
 301
 302
 303 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 304 {
 305         struct i802_bss *bss = priv;
 306         struct wpa_driver_nl80211_data *drv = bss->drv;
 307         if (!drv->associated)
 308                 return -1;
 309         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 310         return drv->ssid_len;
 311 }
 312
 313
 314 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 315                                           char *buf, size_t len, int del)
 316 {
 317         union wpa_event_data event;
 318
 319         os_memset(&event, 0, sizeof(event));
 320         if (len > sizeof(event.interface_status.ifname))
 321                 len = sizeof(event.interface_status.ifname) - 1;
 322         os_memcpy(event.interface_status.ifname, buf, len);
 323         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 324                 EVENT_INTERFACE_ADDED;
 325
 326         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 327                    del ? "DEL" : "NEW",
 328                    event.interface_status.ifname,
 329                    del ? "removed" : "added");
 330
 331         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 332                 if (del)
 333                         drv->if_removed = 1;
 334                 else
 335                         drv->if_removed = 0;
 336         }
 337
 338         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 339 }
 340
 341
 342 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 343                                          u8 *buf, size_t len)
 344 {
 345         int attrlen, rta_len;
 346         struct rtattr *attr;
 347
 348         attrlen = len;
 349         attr = (struct rtattr *) buf;
 350
 351         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 352         while (RTA_OK(attr, attrlen)) {
 353                 if (attr->rta_type == IFLA_IFNAME) {
 354                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 355                             == 0)
 356                                 return 1;
 357                         else
 358                                 break;
 359                 }
 360                 attr = RTA_NEXT(attr, attrlen);
 361         }
 362
 363         return 0;
 364 }
 365
 366
 367 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 368                                           int ifindex, u8 *buf, size_t len)
 369 {
 370         if (drv->ifindex == ifindex)
 371                 return 1;
 372
 373         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 374                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 375                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 376                            "interface");
 377                 wpa_driver_nl80211_finish_drv_init(drv);
 378                 return 1;
 379         }
 380
 381         return 0;
 382 }
 383
 384
 385 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 386                                                  struct ifinfomsg *ifi,
 387                                                  u8 *buf, size_t len)
 388 {
 389         struct wpa_driver_nl80211_data *drv = ctx;
 390         int attrlen, rta_len;
 391         struct rtattr *attr;
 392
 393         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
 394                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 395                            ifi->ifi_index);
 396                 return;
 397         }
 398
 399         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 400                    "(%s%s%s%s)",
 401                    drv->operstate, ifi->ifi_flags,
 402                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 403                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 404                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 405                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 406         /*
 407          * Some drivers send the association event before the operup event--in
 408          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 409          * fails. This will hit us when wpa_supplicant does not need to do
 410          * IEEE 802.1X authentication
 411          */
 412         if (drv->operstate == 1 &&
 413             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 414             !(ifi->ifi_flags & IFF_RUNNING))
 415                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 416                                        -1, IF_OPER_UP);
 417
 418         attrlen = len;
 419         attr = (struct rtattr *) buf;
 420         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 421         while (RTA_OK(attr, attrlen)) {
 422                 if (attr->rta_type == IFLA_IFNAME) {
 423                         wpa_driver_nl80211_event_link(
 424                                 drv,
 425                                 ((char *) attr) + rta_len,
 426                                 attr->rta_len - rta_len, 0);
 427                 }
 428                 attr = RTA_NEXT(attr, attrlen);
 429         }
 430 }
 431
 432
 433 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 434                                                  struct ifinfomsg *ifi,
 435                                                  u8 *buf, size_t len)
 436 {
 437         struct wpa_driver_nl80211_data *drv = ctx;
 438         int attrlen, rta_len;
 439         struct rtattr *attr;
 440
 441         attrlen = len;
 442         attr = (struct rtattr *) buf;
 443
 444         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 445         while (RTA_OK(attr, attrlen)) {
 446                 if (attr->rta_type == IFLA_IFNAME) {
 447                         wpa_driver_nl80211_event_link(
 448                                 drv,
 449                                 ((char *) attr) + rta_len,
 450                                 attr->rta_len - rta_len, 1);
 451                 }
 452                 attr = RTA_NEXT(attr, attrlen);
 453         }
 454 }
 455
 456
 457 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 458                             const u8 *frame, size_t len)
 459 {
 460         const struct ieee80211_mgmt *mgmt;
 461         union wpa_event_data event;
 462
 463         mgmt = (const struct ieee80211_mgmt *) frame;
 464         if (len < 24 + sizeof(mgmt->u.auth)) {
 465                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 466                            "frame");
 467                 return;
 468         }
 469
 470         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 471         os_memset(&event, 0, sizeof(event));
 472         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 473         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 474         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 475         if (len > 24 + sizeof(mgmt->u.auth)) {
 476                 event.auth.ies = mgmt->u.auth.variable;
 477                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 478         }
 479
 480         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 481 }
 482
 483
 484 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 485                             const u8 *frame, size_t len)
 486 {
 487         const struct ieee80211_mgmt *mgmt;
 488         union wpa_event_data event;
 489         u16 status;
 490
 491         mgmt = (const struct ieee80211_mgmt *) frame;
 492         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 493                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 494                            "frame");
 495                 return;
 496         }
 497
 498         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 499         if (status != WLAN_STATUS_SUCCESS) {
 500                 os_memset(&event, 0, sizeof(event));
 501                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 502                         event.assoc_reject.resp_ies =
 503                                 (u8 *) mgmt->u.assoc_resp.variable;
 504                         event.assoc_reject.resp_ies_len =
 505                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 506                 }
 507                 event.assoc_reject.status_code = status;
 508
 509                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 510                 return;
 511         }
 512
 513         drv->associated = 1;
 514         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 515
 516         os_memset(&event, 0, sizeof(event));
 517         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 518                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 519                 event.assoc_info.resp_ies_len =
 520                         len - 24 - sizeof(mgmt->u.assoc_resp);
 521         }
 522
 523         event.assoc_info.freq = drv->assoc_freq;
 524
 525         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 526 }
 527
 528
 529 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 530                                enum nl80211_commands cmd, struct nlattr *status,
 531                                struct nlattr *addr, struct nlattr *req_ie,
 532                                struct nlattr *resp_ie)
 533 {
 534         union wpa_event_data event;
 535
 536         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 537                 /*
 538                  * Avoid reporting two association events that would confuse
 539                  * the core code.
 540                  */
 541                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 542                            "when using userspace SME", cmd);
 543                 return;
 544         }
 545
 546         os_memset(&event, 0, sizeof(event));
 547         if (cmd == NL80211_CMD_CONNECT &&
 548             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 549                 if (resp_ie) {
 550                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 551                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 552                 }
 553                 event.assoc_reject.status_code = nla_get_u16(status);
 554                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 555                 return;
 556         }
 557
 558         drv->associated = 1;
 559         if (addr)
 560                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 561
 562         if (req_ie) {
 563                 event.assoc_info.req_ies = nla_data(req_ie);
 564                 event.assoc_info.req_ies_len = nla_len(req_ie);
 565         }
 566         if (resp_ie) {
 567                 event.assoc_info.resp_ies = nla_data(resp_ie);
 568                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 569         }
 570
 571         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 572 }
 573
 574
 575 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 576                                enum nl80211_commands cmd, struct nlattr *addr)
 577 {
 578         union wpa_event_data event;
 579         enum wpa_event_type ev;
 580
 581         if (nla_len(addr) != ETH_ALEN)
 582                 return;
 583
 584         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 585                    cmd, MAC2STR((u8 *) nla_data(addr)));
 586
 587         if (cmd == NL80211_CMD_AUTHENTICATE)
 588                 ev = EVENT_AUTH_TIMED_OUT;
 589         else if (cmd == NL80211_CMD_ASSOCIATE)
 590                 ev = EVENT_ASSOC_TIMED_OUT;
 591         else
 592                 return;
 593
 594         os_memset(&event, 0, sizeof(event));
 595         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 596         wpa_supplicant_event(drv->ctx, ev, &event);
 597 }
 598
 599
 600 static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
 601                               struct nlattr *freq, const u8 *frame, size_t len)
 602 {
 603         const struct ieee80211_mgmt *mgmt;
 604         union wpa_event_data event;
 605         u16 fc, stype;
 606
 607         mgmt = (const struct ieee80211_mgmt *) frame;
 608         if (len < 24) {
 609                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
 610                 return;
 611         }
 612
 613         fc = le_to_host16(mgmt->frame_control);
 614         stype = WLAN_FC_GET_STYPE(fc);
 615
 616         os_memset(&event, 0, sizeof(event));
 617         event.rx_action.da = mgmt->da;
 618         event.rx_action.sa = mgmt->sa;
 619         event.rx_action.bssid = mgmt->bssid;
 620         event.rx_action.category = mgmt->u.action.category;
 621         event.rx_action.data = &mgmt->u.action.category + 1;
 622         event.rx_action.len = frame + len - event.rx_action.data;
 623         if (freq)
 624                 event.rx_action.freq = nla_get_u32(freq);
 625         wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
 626 }
 627
 628
 629 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
 630                                         struct nlattr *cookie, const u8 *frame,
 631                                         size_t len, struct nlattr *ack)
 632 {
 633         union wpa_event_data event;
 634         const struct ieee80211_hdr *hdr;
 635         u16 fc;
 636         u64 cookie_val;
 637
 638         if (!cookie)
 639                 return;
 640
 641         cookie_val = nla_get_u64(cookie);
 642         wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
 643                    (long long unsigned int) cookie_val,
 644                    cookie_val == drv->send_action_cookie ?
 645                    " (match)" : " (unknown)");
 646         if (cookie_val != drv->send_action_cookie)
 647                 return;
 648
 649         hdr = (const struct ieee80211_hdr *) frame;
 650         fc = le_to_host16(hdr->frame_control);
 651
 652         os_memset(&event, 0, sizeof(event));
 653         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 654         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 655         event.tx_status.dst = hdr->addr1;
 656         event.tx_status.data = frame;
 657         event.tx_status.data_len = len;
 658         event.tx_status.ack = ack != NULL;
 659         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
 660 }
 661
 662
 663 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
 664                                        enum wpa_event_type type,
 665                                        const u8 *frame, size_t len)
 666 {
 667         const struct ieee80211_mgmt *mgmt;
 668         union wpa_event_data event;
 669         const u8 *bssid = NULL;
 670         u16 reason_code = 0;
 671
 672         drv->associated = 0;
 673         os_memset(&event, 0, sizeof(event));
 674
 675         mgmt = (const struct ieee80211_mgmt *) frame;
 676         if (len >= 24)
 677                 bssid = mgmt->bssid;
 678         /* Note: Same offset for Reason Code in both frame subtypes */
 679         if (len >= 24 + sizeof(mgmt->u.deauth))
 680                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
 681
 682         if (type == EVENT_DISASSOC) {
 683                 event.disassoc_info.addr = bssid;
 684                 event.disassoc_info.reason_code = reason_code;
 685         } else {
 686                 event.deauth_info.addr = bssid;
 687                 event.deauth_info.reason_code = reason_code;
 688         }
 689
 690         wpa_supplicant_event(drv->ctx, type, &event);
 691 }
 692
 693
 694 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 695                        enum nl80211_commands cmd, struct nlattr *frame,
 696                        struct nlattr *addr, struct nlattr *timed_out,
 697                        struct nlattr *freq, struct nlattr *ack,
 698                        struct nlattr *cookie)
 699 {
 700         if (timed_out && addr) {
 701                 mlme_timeout_event(drv, cmd, addr);
 702                 return;
 703         }
 704
 705         if (frame == NULL) {
 706                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 707                            "data", cmd);
 708                 return;
 709         }
 710
 711         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 712         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 713                     nla_data(frame), nla_len(frame));
 714
 715         switch (cmd) {
 716         case NL80211_CMD_AUTHENTICATE:
 717                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 718                 break;
 719         case NL80211_CMD_ASSOCIATE:
 720                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 721                 break;
 722         case NL80211_CMD_DEAUTHENTICATE:
 723                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
 724                                            nla_data(frame), nla_len(frame));
 725                 break;
 726         case NL80211_CMD_DISASSOCIATE:
 727                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
 728                                            nla_data(frame), nla_len(frame));
 729                 break;
 730         case NL80211_CMD_ACTION:
 731                 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
 732                 break;
 733         case NL80211_CMD_ACTION_TX_STATUS:
 734                 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
 735                                             nla_len(frame), ack);
 736                 break;
 737         default:
 738                 break;
 739         }
 740 }
 741
 742
 743 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 744                                            struct nlattr *tb[])
 745 {
 746         union wpa_event_data data;
 747
 748         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 749         os_memset(&data, 0, sizeof(data));
 750         if (tb[NL80211_ATTR_MAC]) {
 751                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 752                             nla_data(tb[NL80211_ATTR_MAC]),
 753                             nla_len(tb[NL80211_ATTR_MAC]));
 754                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 755         }
 756         if (tb[NL80211_ATTR_KEY_SEQ]) {
 757                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 758                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 759                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 760         }
 761         if (tb[NL80211_ATTR_KEY_TYPE]) {
 762                 enum nl80211_key_type key_type =
 763                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 764                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 765                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 766                         data.michael_mic_failure.unicast = 1;
 767         } else
 768                 data.michael_mic_failure.unicast = 1;
 769
 770         if (tb[NL80211_ATTR_KEY_IDX]) {
 771                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 772                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 773         }
 774
 775         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 776 }
 777
 778
 779 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 780                                  struct nlattr *tb[])
 781 {
 782         if (tb[NL80211_ATTR_MAC] == NULL) {
 783                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 784                            "event");
 785                 return;
 786         }
 787         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 788         drv->associated = 1;
 789         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 790                    MAC2STR(drv->bssid));
 791
 792         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 793 }
 794
 795
 796 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 797                                          int cancel_event, struct nlattr *tb[])
 798 {
 799         unsigned int freq, chan_type, duration;
 800         union wpa_event_data data;
 801         u64 cookie;
 802
 803         if (tb[NL80211_ATTR_WIPHY_FREQ])
 804                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 805         else
 806                 freq = 0;
 807
 808         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 809                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 810         else
 811                 chan_type = 0;
 812
 813         if (tb[NL80211_ATTR_DURATION])
 814                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 815         else
 816                 duration = 0;
 817
 818         if (tb[NL80211_ATTR_COOKIE])
 819                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 820         else
 821                 cookie = 0;
 822
 823         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 824                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 825                    cancel_event, freq, chan_type, duration,
 826                    (long long unsigned int) cookie,
 827                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 828
 829         if (cookie != drv->remain_on_chan_cookie)
 830                 return; /* not for us */
 831
 832         drv->pending_remain_on_chan = !cancel_event;
 833
 834         os_memset(&data, 0, sizeof(data));
 835         data.remain_on_channel.freq = freq;
 836         data.remain_on_channel.duration = duration;
 837         wpa_supplicant_event(drv->ctx, cancel_event ?
 838                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 839                              EVENT_REMAIN_ON_CHANNEL, &data);
 840 }
 841
 842
 843 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 844                             struct nlattr *tb[])
 845 {
 846         union wpa_event_data event;
 847         struct nlattr *nl;
 848         int rem;
 849         struct scan_info *info;
 850 #define MAX_REPORT_FREQS 50
 851         int freqs[MAX_REPORT_FREQS];
 852         int num_freqs = 0;
 853
 854         os_memset(&event, 0, sizeof(event));
 855         info = &event.scan_info;
 856         info->aborted = aborted;
 857
 858         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 859                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 860                         struct wpa_driver_scan_ssid *s =
 861                                 &info->ssids[info->num_ssids];
 862                         s->ssid = nla_data(nl);
 863                         s->ssid_len = nla_len(nl);
 864                         info->num_ssids++;
 865                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 866                                 break;
 867                 }
 868         }
 869         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
 870                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
 871                 {
 872                         freqs[num_freqs] = nla_get_u32(nl);
 873                         num_freqs++;
 874                         if (num_freqs == MAX_REPORT_FREQS - 1)
 875                                 break;
 876                 }
 877                 info->freqs = freqs;
 878                 info->num_freqs = num_freqs;
 879         }
 880         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
 881 }
 882
 883
 884 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
 885                               struct nlattr *tb[])
 886 {
 887         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
 888                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
 889                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
 890                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
 891         };
 892         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
 893         enum nl80211_cqm_rssi_threshold_event event;
 894         union wpa_event_data ed;
 895
 896         if (tb[NL80211_ATTR_CQM] == NULL ||
 897             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
 898                              cqm_policy)) {
 899                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
 900                 return;
 901         }
 902
 903         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
 904                 return;
 905         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
 906
 907         os_memset(&ed, 0, sizeof(ed));
 908
 909         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
 910                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
 911                            "event: RSSI high");
 912                 ed.signal_change.above_threshold = 1;
 913         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
 914                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
 915                            "event: RSSI low");
 916                 ed.signal_change.above_threshold = 0;
 917         } else
 918                 return;
 919
 920         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
 921 }
 922
 923
 924 static int process_event(struct nl_msg *msg, void *arg)
 925 {
 926         struct wpa_driver_nl80211_data *drv = arg;
 927         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 928         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 929         union wpa_event_data data;
 930
 931         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 932                   genlmsg_attrlen(gnlh, 0), NULL);
 933
 934         if (tb[NL80211_ATTR_IFINDEX]) {
 935                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 936                 if (ifindex != drv->ifindex) {
 937                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
 938                                    " for foreign interface (ifindex %d)",
 939                                    gnlh->cmd, ifindex);
 940                         return NL_SKIP;
 941                 }
 942         }
 943
 944         if (drv->ap_scan_as_station &&
 945             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
 946              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
 947                 wpa_driver_nl80211_set_mode(&drv->first_bss,
 948                                             IEEE80211_MODE_AP);
 949                 drv->ap_scan_as_station = 0;
 950         }
 951
 952         switch (gnlh->cmd) {
 953         case NL80211_CMD_TRIGGER_SCAN:
 954                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
 955                 break;
 956         case NL80211_CMD_NEW_SCAN_RESULTS:
 957                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
 958                 drv->scan_complete_events = 1;
 959                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 960                                      drv->ctx);
 961                 send_scan_event(drv, 0, tb);
 962                 break;
 963         case NL80211_CMD_SCAN_ABORTED:
 964                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
 965                 /*
 966                  * Need to indicate that scan results are available in order
 967                  * not to make wpa_supplicant stop its scanning.
 968                  */
 969                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 970                                      drv->ctx);
 971                 send_scan_event(drv, 1, tb);
 972                 break;
 973         case NL80211_CMD_AUTHENTICATE:
 974         case NL80211_CMD_ASSOCIATE:
 975         case NL80211_CMD_DEAUTHENTICATE:
 976         case NL80211_CMD_DISASSOCIATE:
 977         case NL80211_CMD_ACTION:
 978         case NL80211_CMD_ACTION_TX_STATUS:
 979                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
 980                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
 981                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
 982                            tb[NL80211_ATTR_COOKIE]);
 983                 break;
 984         case NL80211_CMD_CONNECT:
 985         case NL80211_CMD_ROAM:
 986                 mlme_event_connect(drv, gnlh->cmd,
 987                                    tb[NL80211_ATTR_STATUS_CODE],
 988                                    tb[NL80211_ATTR_MAC],
 989                                    tb[NL80211_ATTR_REQ_IE],
 990                                    tb[NL80211_ATTR_RESP_IE]);
 991                 break;
 992         case NL80211_CMD_DISCONNECT:
 993                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 994                         /*
 995                          * Avoid reporting two disassociation events that could
 996                          * confuse the core code.
 997                          */
 998                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
 999                                    "event when using userspace SME");
1000                         break;
1001                 }
1002                 drv->associated = 0;
1003                 os_memset(&data, 0, sizeof(data));
1004                 if (tb[NL80211_ATTR_REASON_CODE])
1005                         data.disassoc_info.reason_code =
1006                                 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1007                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1008                 break;
1009         case NL80211_CMD_MICHAEL_MIC_FAILURE:
1010                 mlme_event_michael_mic_failure(drv, tb);
1011                 break;
1012         case NL80211_CMD_JOIN_IBSS:
1013                 mlme_event_join_ibss(drv, tb);
1014                 break;
1015         case NL80211_CMD_REMAIN_ON_CHANNEL:
1016                 mlme_event_remain_on_channel(drv, 0, tb);
1017                 break;
1018         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1019                 mlme_event_remain_on_channel(drv, 1, tb);
1020                 break;
1021         case NL80211_CMD_NOTIFY_CQM:
1022                 nl80211_cqm_event(drv, tb);
1023                 break;
1024         default:
1025                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1026                            "(cmd=%d)", gnlh->cmd);
1027                 break;
1028         }
1029
1030         return NL_SKIP;
1031 }
1032
1033
1034 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1035                                              void *sock_ctx)
1036 {
1037         struct nl_cb *cb;
1038         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1039
1040         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1041
1042         cb = nl_cb_clone(drv->nl_cb);
1043         if (!cb)
1044                 return;
1045         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1046         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1047         nl_recvmsgs(drv->nl_handle_event, cb);
1048         nl_cb_put(cb);
1049 }
1050
1051
1052 /**
1053  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1054  * @priv: driver_nl80211 private data
1055  * @alpha2_arg: country to which to switch to
1056  * Returns: 0 on success, -1 on failure
1057  *
1058  * This asks nl80211 to set the regulatory domain for given
1059  * country ISO / IEC alpha2.
1060  */
1061 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1062 {
1063         struct i802_bss *bss = priv;
1064         struct wpa_driver_nl80211_data *drv = bss->drv;
1065         char alpha2[3];
1066         struct nl_msg *msg;
1067
1068         msg = nlmsg_alloc();
1069         if (!msg)
1070                 return -ENOMEM;
1071
1072         alpha2[0] = alpha2_arg[0];
1073         alpha2[1] = alpha2_arg[1];
1074         alpha2[2] = '\0';
1075
1076         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1077                     0, NL80211_CMD_REQ_SET_REG, 0);
1078
1079         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1080         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1081                 return -EINVAL;
1082         return 0;
1083 nla_put_failure:
1084         return -EINVAL;
1085 }
1086
1087
1088 #ifndef HOSTAPD
1089 struct wiphy_info_data {
1090         int max_scan_ssids;
1091         int ap_supported;
1092         int auth_supported;
1093         int connect_supported;
1094 };
1095
1096
1097 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1098 {
1099         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1100         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1101         struct wiphy_info_data *info = arg;
1102
1103         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1104                   genlmsg_attrlen(gnlh, 0), NULL);
1105
1106         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1107                 info->max_scan_ssids =
1108                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1109
1110         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1111                 struct nlattr *nl_mode;
1112                 int i;
1113                 nla_for_each_nested(nl_mode,
1114                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1115                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1116                                 info->ap_supported = 1;
1117                                 break;
1118                         }
1119                 }
1120         }
1121
1122         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1123                 struct nlattr *nl_cmd;
1124                 int i;
1125
1126                 nla_for_each_nested(nl_cmd,
1127                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1128                         u32 cmd = nla_get_u32(nl_cmd);
1129                         if (cmd == NL80211_CMD_AUTHENTICATE)
1130                                 info->auth_supported = 1;
1131                         else if (cmd == NL80211_CMD_CONNECT)
1132                                 info->connect_supported = 1;
1133                 }
1134         }
1135
1136         return NL_SKIP;
1137 }
1138
1139
1140 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1141                                        struct wiphy_info_data *info)
1142 {
1143         struct nl_msg *msg;
1144
1145         os_memset(info, 0, sizeof(*info));
1146         msg = nlmsg_alloc();
1147         if (!msg)
1148                 return -1;
1149
1150         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1151                     0, NL80211_CMD_GET_WIPHY, 0);
1152
1153         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1154
1155         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1156                 return 0;
1157         msg = NULL;
1158 nla_put_failure:
1159         nlmsg_free(msg);
1160         return -1;
1161 }
1162
1163
1164 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1165 {
1166         struct wiphy_info_data info;
1167         if (wpa_driver_nl80211_get_info(drv, &info))
1168                 return -1;
1169         drv->has_capability = 1;
1170         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1171         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1172                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1173                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1174                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1175         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1176                 WPA_DRIVER_CAPA_ENC_WEP104 |
1177                 WPA_DRIVER_CAPA_ENC_TKIP |
1178                 WPA_DRIVER_CAPA_ENC_CCMP;
1179         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1180                 WPA_DRIVER_AUTH_SHARED |
1181                 WPA_DRIVER_AUTH_LEAP;
1182
1183         drv->capa.max_scan_ssids = info.max_scan_ssids;
1184         if (info.ap_supported)
1185                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1186
1187         if (info.auth_supported)
1188                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1189         else if (!info.connect_supported) {
1190                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1191                            "authentication/association or connect commands");
1192                 return -1;
1193         }
1194
1195         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1196         drv->capa.max_remain_on_chan = 5000;
1197
1198         return 0;
1199 }
1200 #endif /* HOSTAPD */
1201
1202
1203 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1204                                       void *ctx)
1205 {
1206         int ret;
1207
1208         /* Initialize generic netlink and nl80211 */
1209
1210         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1211         if (drv->nl_cb == NULL) {
1212                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1213                            "callbacks");
1214                 goto err1;
1215         }
1216
1217         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1218         if (drv->nl_handle == NULL) {
1219                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1220                            "callbacks");
1221                 goto err2;
1222         }
1223
1224         drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1225         if (drv->nl_handle_event == NULL) {
1226                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1227                            "callbacks (event)");
1228                 goto err2b;
1229         }
1230
1231         if (genl_connect(drv->nl_handle)) {
1232                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1233                            "netlink");
1234                 goto err3;
1235         }
1236
1237         if (genl_connect(drv->nl_handle_event)) {
1238                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1239                            "netlink (event)");
1240                 goto err3;
1241         }
1242
1243 #ifdef CONFIG_LIBNL20
1244         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1245                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1246                            "netlink cache");
1247                 goto err3;
1248         }
1249         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1250             0) {
1251                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1252                            "netlink cache (event)");
1253                 goto err3b;
1254         }
1255 #else /* CONFIG_LIBNL20 */
1256         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1257         if (drv->nl_cache == NULL) {
1258                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1259                            "netlink cache");
1260                 goto err3;
1261         }
1262         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1263         if (drv->nl_cache_event == NULL) {
1264                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1265                            "netlink cache (event)");
1266                 goto err3b;
1267         }
1268 #endif /* CONFIG_LIBNL20 */
1269
1270         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1271         if (drv->nl80211 == NULL) {
1272                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1273                            "found");
1274                 goto err4;
1275         }
1276
1277         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1278         if (ret >= 0)
1279                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1280         if (ret < 0) {
1281                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1282                            "membership for scan events: %d (%s)",
1283                            ret, strerror(-ret));
1284                 goto err4;
1285         }
1286
1287         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1288         if (ret >= 0)
1289                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1290         if (ret < 0) {
1291                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1292                            "membership for mlme events: %d (%s)",
1293                            ret, strerror(-ret));
1294                 goto err4;
1295         }
1296
1297         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1298                                  wpa_driver_nl80211_event_receive, drv, ctx);
1299
1300         return 0;
1301
1302 err4:
1303         nl_cache_free(drv->nl_cache_event);
1304 err3b:
1305         nl_cache_free(drv->nl_cache);
1306 err3:
1307         nl_handle_destroy(drv->nl_handle_event);
1308 err2b:
1309         nl_handle_destroy(drv->nl_handle);
1310 err2:
1311         nl_cb_put(drv->nl_cb);
1312 err1:
1313         return -1;
1314 }
1315
1316
1317 /**
1318  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1319  * @ctx: context to be used when calling wpa_supplicant functions,
1320  * e.g., wpa_supplicant_event()
1321  * @ifname: interface name, e.g., wlan0
1322  * Returns: Pointer to private data, %NULL on failure
1323  */
1324 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1325 {
1326         struct wpa_driver_nl80211_data *drv;
1327         struct netlink_config *cfg;
1328         struct i802_bss *bss;
1329
1330         drv = os_zalloc(sizeof(*drv));
1331         if (drv == NULL)
1332                 return NULL;
1333         drv->ctx = ctx;
1334         bss = &drv->first_bss;
1335         bss->drv = drv;
1336         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1337         drv->monitor_ifidx = -1;
1338         drv->monitor_sock = -1;
1339         drv->ioctl_sock = -1;
1340
1341         if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1342                 os_free(drv);
1343                 return NULL;
1344         }
1345
1346         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1347         if (drv->ioctl_sock < 0) {
1348                 perror("socket(PF_INET,SOCK_DGRAM)");
1349                 goto failed;
1350         }
1351
1352         cfg = os_zalloc(sizeof(*cfg));
1353         if (cfg == NULL)
1354                 goto failed;
1355         cfg->ctx = drv;
1356         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1357         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1358         drv->netlink = netlink_init(cfg);
1359         if (drv->netlink == NULL) {
1360                 os_free(cfg);
1361                 goto failed;
1362         }
1363         if (wpa_driver_nl80211_finish_drv_init(drv))
1364                 goto failed;
1365
1366         return bss;
1367
1368 failed:
1369         netlink_deinit(drv->netlink);
1370         if (drv->ioctl_sock >= 0)
1371                 close(drv->ioctl_sock);
1372
1373         genl_family_put(drv->nl80211);
1374         nl_cache_free(drv->nl_cache);
1375         nl_handle_destroy(drv->nl_handle);
1376         nl_cb_put(drv->nl_cb);
1377         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1378
1379         os_free(drv);
1380         return NULL;
1381 }
1382
1383
1384 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1385                                          const u8 *match, size_t match_len)
1386 {
1387         struct nl_msg *msg;
1388         int ret = -1;
1389
1390         msg = nlmsg_alloc();
1391         if (!msg)
1392                 return -1;
1393
1394         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1395                     NL80211_CMD_REGISTER_ACTION, 0);
1396
1397         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1398         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1399
1400         ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1401         msg = NULL;
1402         if (ret) {
1403                 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1404                            "failed: ret=%d (%s)", ret, strerror(-ret));
1405                 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1406                             match, match_len);
1407                 goto nla_put_failure;
1408         }
1409         ret = 0;
1410 nla_put_failure:
1411         nlmsg_free(msg);
1412         return ret;
1413 }
1414
1415
1416 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1417 {
1418         /* FT Action frames */
1419         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1420                 return -1;
1421         else
1422                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1423                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1424
1425         return 0;
1426 }
1427
1428
1429 static int
1430 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1431 {
1432         struct i802_bss *bss = &drv->first_bss;
1433
1434         drv->ifindex = if_nametoindex(bss->ifname);
1435         drv->first_bss.ifindex = drv->ifindex;
1436
1437 #ifndef HOSTAPD
1438         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1439                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1440                            "use managed mode");
1441         }
1442
1443         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1444                 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
1445                            bss->ifname);
1446                 return -1;
1447         }
1448
1449         if (wpa_driver_nl80211_capa(drv))
1450                 return -1;
1451
1452         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1453                                1, IF_OPER_DORMANT);
1454 #endif /* HOSTAPD */
1455
1456         if (nl80211_register_action_frames(drv) < 0) {
1457                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1458                            "frame processing - ignore for now");
1459                 /*
1460                  * Older kernel versions did not support this, so ignore the
1461                  * error for now. Some functionality may not be available
1462                  * because of this.
1463                  */
1464         }
1465
1466         return 0;
1467 }
1468
1469
1470 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1471 {
1472         struct nl_msg *msg;
1473
1474         msg = nlmsg_alloc();
1475         if (!msg)
1476                 return -ENOMEM;
1477
1478         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1479                     0, NL80211_CMD_DEL_BEACON, 0);
1480         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1481
1482         return send_and_recv_msgs(drv, msg, NULL, NULL);
1483  nla_put_failure:
1484         return -ENOBUFS;
1485 }
1486
1487
1488 /**
1489  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1490  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1491  *
1492  * Shut down driver interface and processing of driver events. Free
1493  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1494  */
1495 static void wpa_driver_nl80211_deinit(void *priv)
1496 {
1497         struct i802_bss *bss = priv;
1498         struct wpa_driver_nl80211_data *drv = bss->drv;
1499
1500         if (drv->added_if_into_bridge) {
1501                 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1502                     < 0)
1503                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1504                                    "interface %s from bridge %s: %s",
1505                                    bss->ifname, drv->brname, strerror(errno));
1506         }
1507         if (drv->added_bridge) {
1508                 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1509                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1510                                    "bridge %s: %s",
1511                                    drv->brname, strerror(errno));
1512         }
1513
1514         nl80211_remove_monitor_interface(drv);
1515
1516         if (drv->nlmode == NL80211_IFTYPE_AP)
1517                 wpa_driver_nl80211_del_beacon(drv);
1518
1519 #ifdef HOSTAPD
1520         if (drv->last_freq_ht) {
1521                 /* Clear HT flags from the driver */
1522                 struct hostapd_freq_params freq;
1523                 os_memset(&freq, 0, sizeof(freq));
1524                 freq.freq = drv->last_freq;
1525                 i802_set_freq(priv, &freq);
1526         }
1527
1528         if (drv->eapol_sock >= 0) {
1529                 eloop_unregister_read_sock(drv->eapol_sock);
1530                 close(drv->eapol_sock);
1531         }
1532
1533         if (drv->if_indices != drv->default_if_indices)
1534                 os_free(drv->if_indices);
1535 #endif /* HOSTAPD */
1536
1537         if (drv->disable_11b_rates)
1538                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1539
1540         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1541         netlink_deinit(drv->netlink);
1542
1543         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1544
1545         (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1546         wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1547
1548         if (drv->ioctl_sock >= 0)
1549                 close(drv->ioctl_sock);
1550
1551         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1552         genl_family_put(drv->nl80211);
1553         nl_cache_free(drv->nl_cache);
1554         nl_cache_free(drv->nl_cache_event);
1555         nl_handle_destroy(drv->nl_handle);
1556         nl_handle_destroy(drv->nl_handle_event);
1557         nl_cb_put(drv->nl_cb);
1558
1559         eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1560                              drv, NULL);
1561
1562         os_free(drv->filter_ssids);
1563
1564         os_free(drv);
1565 }
1566
1567
1568 /**
1569  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1570  * @eloop_ctx: Driver private data
1571  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1572  *
1573  * This function can be used as registered timeout when starting a scan to
1574  * generate a scan completed event if the driver does not report this.
1575  */
1576 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1577 {
1578         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1579         if (drv->ap_scan_as_station) {
1580                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1581                                             IEEE80211_MODE_AP);
1582                 drv->ap_scan_as_station = 0;
1583         }
1584         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1585         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1586 }
1587
1588
1589 /**
1590  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1591  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1592  * @params: Scan parameters
1593  * Returns: 0 on success, -1 on failure
1594  */
1595 static int wpa_driver_nl80211_scan(void *priv,
1596                                    struct wpa_driver_scan_params *params)
1597 {
1598         struct i802_bss *bss = priv;
1599         struct wpa_driver_nl80211_data *drv = bss->drv;
1600         int ret = 0, timeout;
1601         struct nl_msg *msg, *ssids, *freqs;
1602         size_t i;
1603
1604         msg = nlmsg_alloc();
1605         ssids = nlmsg_alloc();
1606         freqs = nlmsg_alloc();
1607         if (!msg || !ssids || !freqs) {
1608                 nlmsg_free(msg);
1609                 nlmsg_free(ssids);
1610                 nlmsg_free(freqs);
1611                 return -1;
1612         }
1613
1614         os_free(drv->filter_ssids);
1615         drv->filter_ssids = params->filter_ssids;
1616         params->filter_ssids = NULL;
1617         drv->num_filter_ssids = params->num_filter_ssids;
1618
1619         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1620                     NL80211_CMD_TRIGGER_SCAN, 0);
1621
1622         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1623
1624         for (i = 0; i < params->num_ssids; i++) {
1625                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1626                                   params->ssids[i].ssid,
1627                                   params->ssids[i].ssid_len);
1628                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1629                         params->ssids[i].ssid);
1630         }
1631         if (params->num_ssids)
1632                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1633
1634         if (params->extra_ies) {
1635                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1636                                   params->extra_ies, params->extra_ies_len);
1637                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1638                         params->extra_ies);
1639         }
1640
1641         if (params->freqs) {
1642                 for (i = 0; params->freqs[i]; i++) {
1643                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1644                                    "MHz", params->freqs[i]);
1645                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1646                 }
1647                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1648         }
1649
1650         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1651         msg = NULL;
1652         if (ret) {
1653                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1654                            "(%s)", ret, strerror(-ret));
1655 #ifdef HOSTAPD
1656                 if (drv->nlmode == NL80211_IFTYPE_AP) {
1657                         /*
1658                          * mac80211 does not allow scan requests in AP mode, so
1659                          * try to do this in station mode.
1660                          */
1661                         if (wpa_driver_nl80211_set_mode(bss,
1662                                                         IEEE80211_MODE_INFRA))
1663                                 goto nla_put_failure;
1664
1665                         if (wpa_driver_nl80211_scan(drv, params)) {
1666                                 wpa_driver_nl80211_set_mode(bss,
1667                                                             IEEE80211_MODE_AP);
1668                                 goto nla_put_failure;
1669                         }
1670
1671                         /* Restore AP mode when processing scan results */
1672                         drv->ap_scan_as_station = 1;
1673                         ret = 0;
1674                 } else
1675                         goto nla_put_failure;
1676 #else /* HOSTAPD */
1677                 goto nla_put_failure;
1678 #endif /* HOSTAPD */
1679         }
1680
1681         /* Not all drivers generate "scan completed" wireless event, so try to
1682          * read results after a timeout. */
1683         timeout = 10;
1684         if (drv->scan_complete_events) {
1685                 /*
1686                  * The driver seems to deliver events to notify when scan is
1687                  * complete, so use longer timeout to avoid race conditions
1688                  * with scanning and following association request.
1689                  */
1690                 timeout = 30;
1691         }
1692         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1693                    "seconds", ret, timeout);
1694         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1695         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1696                                drv, drv->ctx);
1697
1698 nla_put_failure:
1699         nlmsg_free(ssids);
1700         nlmsg_free(msg);
1701         nlmsg_free(freqs);
1702         return ret;
1703 }
1704
1705
1706 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1707 {
1708         const u8 *end, *pos;
1709
1710         if (ies == NULL)
1711                 return NULL;
1712
1713         pos = ies;
1714         end = ies + ies_len;
1715
1716         while (pos + 1 < end) {
1717                 if (pos + 2 + pos[1] > end)
1718                         break;
1719                 if (pos[0] == ie)
1720                         return pos;
1721                 pos += 2 + pos[1];
1722         }
1723
1724         return NULL;
1725 }
1726
1727
1728 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1729                                  const u8 *ie, size_t ie_len)
1730 {
1731         const u8 *ssid;
1732         size_t i;
1733
1734         if (drv->filter_ssids == NULL)
1735                 return 0;
1736
1737         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1738         if (ssid == NULL)
1739                 return 1;
1740
1741         for (i = 0; i < drv->num_filter_ssids; i++) {
1742                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1743                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1744                     0)
1745                         return 0;
1746         }
1747
1748         return 1;
1749 }
1750
1751
1752 struct nl80211_bss_info_arg {
1753         struct wpa_driver_nl80211_data *drv;
1754         struct wpa_scan_results *res;
1755 };
1756
1757 static int bss_info_handler(struct nl_msg *msg, void *arg)
1758 {
1759         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1760         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1761         struct nlattr *bss[NL80211_BSS_MAX + 1];
1762         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1763                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1764                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1765                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1766                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1767                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1768                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1769                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1770                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1771                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1772                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1773                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1774         };
1775         struct nl80211_bss_info_arg *_arg = arg;
1776         struct wpa_scan_results *res = _arg->res;
1777         struct wpa_scan_res **tmp;
1778         struct wpa_scan_res *r;
1779         const u8 *ie, *beacon_ie;
1780         size_t ie_len, beacon_ie_len;
1781         u8 *pos;
1782
1783         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1784                   genlmsg_attrlen(gnlh, 0), NULL);
1785         if (!tb[NL80211_ATTR_BSS])
1786                 return NL_SKIP;
1787         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1788                              bss_policy))
1789                 return NL_SKIP;
1790         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1791                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1792                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1793         } else {
1794                 ie = NULL;
1795                 ie_len = 0;
1796         }
1797         if (bss[NL80211_BSS_BEACON_IES]) {
1798                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1799                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1800         } else {
1801                 beacon_ie = NULL;
1802                 beacon_ie_len = 0;
1803         }
1804
1805         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1806                                   ie ? ie_len : beacon_ie_len))
1807                 return NL_SKIP;
1808
1809         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1810         if (r == NULL)
1811                 return NL_SKIP;
1812         if (bss[NL80211_BSS_BSSID])
1813                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1814                           ETH_ALEN);
1815         if (bss[NL80211_BSS_FREQUENCY])
1816                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1817         if (bss[NL80211_BSS_BEACON_INTERVAL])
1818                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1819         if (bss[NL80211_BSS_CAPABILITY])
1820                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1821         r->flags |= WPA_SCAN_NOISE_INVALID;
1822         if (bss[NL80211_BSS_SIGNAL_MBM]) {
1823                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1824                 r->level /= 100; /* mBm to dBm */
1825                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1826         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1827                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1828                 r->flags |= WPA_SCAN_LEVEL_INVALID;
1829         } else
1830                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1831         if (bss[NL80211_BSS_TSF])
1832                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1833         if (bss[NL80211_BSS_SEEN_MS_AGO])
1834                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1835         r->ie_len = ie_len;
1836         pos = (u8 *) (r + 1);
1837         if (ie) {
1838                 os_memcpy(pos, ie, ie_len);
1839                 pos += ie_len;
1840         }
1841         r->beacon_ie_len = beacon_ie_len;
1842         if (beacon_ie)
1843                 os_memcpy(pos, beacon_ie, beacon_ie_len);
1844
1845         if (bss[NL80211_BSS_STATUS]) {
1846                 enum nl80211_bss_status status;
1847                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1848                 switch (status) {
1849                 case NL80211_BSS_STATUS_AUTHENTICATED:
1850                         r->flags |= WPA_SCAN_AUTHENTICATED;
1851                         break;
1852                 case NL80211_BSS_STATUS_ASSOCIATED:
1853                         r->flags |= WPA_SCAN_ASSOCIATED;
1854                         break;
1855                 default:
1856                         break;
1857                 }
1858         }
1859
1860         tmp = os_realloc(res->res,
1861                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1862         if (tmp == NULL) {
1863                 os_free(r);
1864                 return NL_SKIP;
1865         }
1866         tmp[res->num++] = r;
1867         res->res = tmp;
1868
1869         return NL_SKIP;
1870 }
1871
1872
1873 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1874                                  const u8 *addr)
1875 {
1876         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1877                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1878                            "mismatch (" MACSTR ")", MAC2STR(addr));
1879                 wpa_driver_nl80211_mlme(drv, addr,
1880                                         NL80211_CMD_DEAUTHENTICATE,
1881                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
1882         }
1883 }
1884
1885
1886 static void wpa_driver_nl80211_check_bss_status(
1887         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1888 {
1889         size_t i;
1890
1891         for (i = 0; i < res->num; i++) {
1892                 struct wpa_scan_res *r = res->res[i];
1893                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1894                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1895                                    "indicates BSS status with " MACSTR
1896                                    " as authenticated",
1897                                    MAC2STR(r->bssid));
1898                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1899                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1900                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1901                             0) {
1902                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1903                                            " in local state (auth=" MACSTR
1904                                            " assoc=" MACSTR ")",
1905                                            MAC2STR(drv->auth_bssid),
1906                                            MAC2STR(drv->bssid));
1907                                 clear_state_mismatch(drv, r->bssid);
1908                         }
1909                 }
1910
1911                 if (r->flags & WPA_SCAN_ASSOCIATED) {
1912                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1913                                    "indicate BSS status with " MACSTR
1914                                    " as associated",
1915                                    MAC2STR(r->bssid));
1916                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1917                             !drv->associated) {
1918                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1919                                            "(not associated) does not match "
1920                                            "with BSS state");
1921                                 clear_state_mismatch(drv, r->bssid);
1922                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1923                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1924                                    0) {
1925                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1926                                            "(associated with " MACSTR ") does "
1927                                            "not match with BSS state",
1928                                            MAC2STR(drv->bssid));
1929                                 clear_state_mismatch(drv, r->bssid);
1930                                 clear_state_mismatch(drv, drv->bssid);
1931                         }
1932                 }
1933         }
1934 }
1935
1936
1937 static void wpa_scan_results_free(struct wpa_scan_results *res)
1938 {
1939         size_t i;
1940
1941         if (res == NULL)
1942                 return;
1943
1944         for (i = 0; i < res->num; i++)
1945                 os_free(res->res[i]);
1946         os_free(res->res);
1947         os_free(res);
1948 }
1949
1950
1951 static struct wpa_scan_results *
1952 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
1953 {
1954         struct nl_msg *msg;
1955         struct wpa_scan_results *res;
1956         int ret;
1957         struct nl80211_bss_info_arg arg;
1958
1959         res = os_zalloc(sizeof(*res));
1960         if (res == NULL)
1961                 return NULL;
1962         msg = nlmsg_alloc();
1963         if (!msg)
1964                 goto nla_put_failure;
1965
1966         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1967                     NL80211_CMD_GET_SCAN, 0);
1968         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1969
1970         arg.drv = drv;
1971         arg.res = res;
1972         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1973         msg = NULL;
1974         if (ret == 0) {
1975                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1976                            (unsigned long) res->num);
1977                 return res;
1978         }
1979         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1980                    "(%s)", ret, strerror(-ret));
1981 nla_put_failure:
1982         nlmsg_free(msg);
1983         wpa_scan_results_free(res);
1984         return NULL;
1985 }
1986
1987
1988 /**
1989  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1990  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1991  * Returns: Scan results on success, -1 on failure
1992  */
1993 static struct wpa_scan_results *
1994 wpa_driver_nl80211_get_scan_results(void *priv)
1995 {
1996         struct i802_bss *bss = priv;
1997         struct wpa_driver_nl80211_data *drv = bss->drv;
1998         struct wpa_scan_results *res;
1999
2000         res = nl80211_get_scan_results(drv);
2001         if (res)
2002                 wpa_driver_nl80211_check_bss_status(drv, res);
2003         return res;
2004 }
2005
2006
2007 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2008 {
2009         struct wpa_scan_results *res;
2010         size_t i;
2011
2012         res = nl80211_get_scan_results(drv);
2013         if (res == NULL) {
2014                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2015                 return;
2016         }
2017
2018         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2019         for (i = 0; i < res->num; i++) {
2020                 struct wpa_scan_res *r = res->res[i];
2021                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2022                            (int) i, (int) res->num, MAC2STR(r->bssid),
2023                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2024                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2025         }
2026
2027         wpa_scan_results_free(res);
2028 }
2029
2030
2031 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2032                                       enum wpa_alg alg, const u8 *addr,
2033                                       int key_idx, int set_tx,
2034                                       const u8 *seq, size_t seq_len,
2035                                       const u8 *key, size_t key_len)
2036 {
2037         struct i802_bss *bss = priv;
2038         struct wpa_driver_nl80211_data *drv = bss->drv;
2039         int ifindex = if_nametoindex(ifname);
2040         struct nl_msg *msg;
2041         int ret;
2042
2043         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2044                    "set_tx=%d seq_len=%lu key_len=%lu",
2045                    __func__, ifindex, alg, addr, key_idx, set_tx,
2046                    (unsigned long) seq_len, (unsigned long) key_len);
2047
2048         msg = nlmsg_alloc();
2049         if (!msg)
2050                 return -ENOMEM;
2051
2052         if (alg == WPA_ALG_NONE) {
2053                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2054                             0, NL80211_CMD_DEL_KEY, 0);
2055         } else {
2056                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2057                             0, NL80211_CMD_NEW_KEY, 0);
2058                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2059                 switch (alg) {
2060                 case WPA_ALG_WEP:
2061                         if (key_len == 5)
2062                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2063                                             WLAN_CIPHER_SUITE_WEP40);
2064                         else
2065                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2066                                             WLAN_CIPHER_SUITE_WEP104);
2067                         break;
2068                 case WPA_ALG_TKIP:
2069                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2070                                     WLAN_CIPHER_SUITE_TKIP);
2071                         break;
2072                 case WPA_ALG_CCMP:
2073                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2074                                     WLAN_CIPHER_SUITE_CCMP);
2075                         break;
2076                 case WPA_ALG_IGTK:
2077                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2078                                     WLAN_CIPHER_SUITE_AES_CMAC);
2079                         break;
2080                 default:
2081                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2082                                    "algorithm %d", __func__, alg);
2083                         nlmsg_free(msg);
2084                         return -1;
2085                 }
2086         }
2087
2088         if (seq && seq_len)
2089                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2090
2091         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2092         {
2093                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2094                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2095         }
2096         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2097         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2098
2099         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2100         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2101                 ret = 0;
2102         if (ret)
2103                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2104                            ret, strerror(-ret));
2105
2106         /*
2107          * If we failed or don't need to set the default TX key (below),
2108          * we're done here.
2109          */
2110         if (ret || !set_tx || alg == WPA_ALG_NONE)
2111                 return ret;
2112 #ifdef HOSTAPD
2113         if (addr)
2114                 return ret;
2115 #else /* HOSTAPD */
2116         if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2117                 return ret;
2118 #endif /* HOSTAPD */
2119
2120         msg = nlmsg_alloc();
2121         if (!msg)
2122                 return -ENOMEM;
2123
2124         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2125                     0, NL80211_CMD_SET_KEY, 0);
2126         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2127         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2128         if (alg == WPA_ALG_IGTK)
2129                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2130         else
2131                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2132
2133         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2134         if (ret == -ENOENT)
2135                 ret = 0;
2136         if (ret)
2137                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2138                            "err=%d %s)", ret, strerror(-ret));
2139         return ret;
2140
2141 nla_put_failure:
2142         return -ENOBUFS;
2143 }
2144
2145
2146 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2147                       int key_idx, int defkey,
2148                       const u8 *seq, size_t seq_len,
2149                       const u8 *key, size_t key_len)
2150 {
2151         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2152         if (!key_attr)
2153                 return -1;
2154
2155         if (defkey && alg == WPA_ALG_IGTK)
2156                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2157         else if (defkey)
2158                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2159
2160         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2161
2162         switch (alg) {
2163         case WPA_ALG_WEP:
2164                 if (key_len == 5)
2165                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2166                                     WLAN_CIPHER_SUITE_WEP40);
2167                 else
2168                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2169                                     WLAN_CIPHER_SUITE_WEP104);
2170                 break;
2171         case WPA_ALG_TKIP:
2172                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2173                 break;
2174         case WPA_ALG_CCMP:
2175                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2176                 break;
2177         case WPA_ALG_IGTK:
2178                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2179                             WLAN_CIPHER_SUITE_AES_CMAC);
2180                 break;
2181         default:
2182                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2183                            "algorithm %d", __func__, alg);
2184                 return -1;
2185         }
2186
2187         if (seq && seq_len)
2188                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2189
2190         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2191
2192         nla_nest_end(msg, key_attr);
2193
2194         return 0;
2195  nla_put_failure:
2196         return -1;
2197 }
2198
2199
2200 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2201                                  struct nl_msg *msg)
2202 {
2203         int i, privacy = 0;
2204         struct nlattr *nl_keys, *nl_key;
2205
2206         for (i = 0; i < 4; i++) {
2207                 if (!params->wep_key[i])
2208                         continue;
2209                 privacy = 1;
2210                 break;
2211         }
2212         if (!privacy)
2213                 return 0;
2214
2215         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2216
2217         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2218         if (!nl_keys)
2219                 goto nla_put_failure;
2220
2221         for (i = 0; i < 4; i++) {
2222                 if (!params->wep_key[i])
2223                         continue;
2224
2225                 nl_key = nla_nest_start(msg, i);
2226                 if (!nl_key)
2227                         goto nla_put_failure;
2228
2229                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2230                         params->wep_key[i]);
2231                 if (params->wep_key_len[i] == 5)
2232                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2233                                     WLAN_CIPHER_SUITE_WEP40);
2234                 else
2235                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2236                                     WLAN_CIPHER_SUITE_WEP104);
2237
2238                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2239
2240                 if (i == params->wep_tx_keyidx)
2241                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2242
2243                 nla_nest_end(msg, nl_key);
2244         }
2245         nla_nest_end(msg, nl_keys);
2246
2247         return 0;
2248
2249 nla_put_failure:
2250         return -ENOBUFS;
2251 }
2252
2253
2254 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2255                                    const u8 *addr, int cmd, u16 reason_code,
2256                                    int local_state_change)
2257 {
2258         int ret = -1;
2259         struct nl_msg *msg;
2260
2261         msg = nlmsg_alloc();
2262         if (!msg)
2263                 return -1;
2264
2265         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2266
2267         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2268         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2269         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2270         if (local_state_change)
2271                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2272
2273         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2274         msg = NULL;
2275         if (ret) {
2276                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2277                            "(%s)", ret, strerror(-ret));
2278                 goto nla_put_failure;
2279         }
2280         ret = 0;
2281
2282 nla_put_failure:
2283         nlmsg_free(msg);
2284         return ret;
2285 }
2286
2287
2288 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2289                                          const u8 *addr, int reason_code)
2290 {
2291         wpa_printf(MSG_DEBUG, "%s", __func__);
2292         drv->associated = 0;
2293         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2294                                        reason_code, 0);
2295 }
2296
2297
2298 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2299                                              int reason_code)
2300 {
2301         struct i802_bss *bss = priv;
2302         struct wpa_driver_nl80211_data *drv = bss->drv;
2303         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2304                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2305         wpa_printf(MSG_DEBUG, "%s", __func__);
2306         drv->associated = 0;
2307         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2308                                        reason_code, 0);
2309 }
2310
2311
2312 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2313                                            int reason_code)
2314 {
2315         struct i802_bss *bss = priv;
2316         struct wpa_driver_nl80211_data *drv = bss->drv;
2317         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2318                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2319         wpa_printf(MSG_DEBUG, "%s", __func__);
2320         drv->associated = 0;
2321         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2322                                        reason_code, 0);
2323 }
2324
2325
2326 static int wpa_driver_nl80211_authenticate(
2327         void *priv, struct wpa_driver_auth_params *params)
2328 {
2329         struct i802_bss *bss = priv;
2330         struct wpa_driver_nl80211_data *drv = bss->drv;
2331         int ret = -1, i;
2332         struct nl_msg *msg;
2333         enum nl80211_auth_type type;
2334         int count = 0;
2335
2336         drv->associated = 0;
2337         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2338         /* FIX: IBSS mode */
2339         if (drv->nlmode != NL80211_IFTYPE_STATION)
2340                 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2341
2342         if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2343                 return -1;
2344
2345 retry:
2346         msg = nlmsg_alloc();
2347         if (!msg)
2348                 return -1;
2349
2350         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2351                    drv->ifindex);
2352
2353         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2354                     NL80211_CMD_AUTHENTICATE, 0);
2355
2356         for (i = 0; i < 4; i++) {
2357                 if (!params->wep_key[i])
2358                         continue;
2359                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2360                                            NULL, i,
2361                                            i == params->wep_tx_keyidx, NULL, 0,
2362                                            params->wep_key[i],
2363                                            params->wep_key_len[i]);
2364                 if (params->wep_tx_keyidx != i)
2365                         continue;
2366                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2367                                params->wep_key[i], params->wep_key_len[i])) {
2368                         nlmsg_free(msg);
2369                         return -1;
2370                 }
2371         }
2372
2373         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2374         if (params->bssid) {
2375                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2376                            MAC2STR(params->bssid));
2377                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2378         }
2379         if (params->freq) {
2380                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2381                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2382         }
2383         if (params->ssid) {
2384                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2385                                   params->ssid, params->ssid_len);
2386                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2387                         params->ssid);
2388         }
2389         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2390         if (params->ie)
2391                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2392         /*
2393          * TODO: if multiple auth_alg options enabled, try them one by one if
2394          * the AP rejects authentication due to unknown auth alg
2395          */
2396         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2397                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2398         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2399                 type = NL80211_AUTHTYPE_SHARED_KEY;
2400         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2401                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2402         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2403                 type = NL80211_AUTHTYPE_FT;
2404         else
2405                 goto nla_put_failure;
2406         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2407         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2408         if (params->local_state_change) {
2409                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2410                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2411         }
2412
2413         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2414         msg = NULL;
2415         if (ret) {
2416                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2417                            "(%s)", ret, strerror(-ret));
2418                 count++;
2419                 if (ret == -EALREADY && count == 1 && params->bssid &&
2420                     !params->local_state_change) {
2421                         /*
2422                          * mac80211 does not currently accept new
2423                          * authentication if we are already authenticated. As a
2424                          * workaround, force deauthentication and try again.
2425                          */
2426                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2427                                    "after forced deauthentication");
2428                         wpa_driver_nl80211_deauthenticate(
2429                                 bss, params->bssid,
2430                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2431                         nlmsg_free(msg);
2432                         goto retry;
2433                 }
2434                 goto nla_put_failure;
2435         }
2436         ret = 0;
2437         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2438                    "successfully");
2439
2440 nla_put_failure:
2441         nlmsg_free(msg);
2442         return ret;
2443 }
2444
2445
2446 struct phy_info_arg {
2447         u16 *num_modes;
2448         struct hostapd_hw_modes *modes;
2449 };
2450
2451 static int phy_info_handler(struct nl_msg *msg, void *arg)
2452 {
2453         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2454         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2455         struct phy_info_arg *phy_info = arg;
2456
2457         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2458
2459         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2460         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2461                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2462                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2463                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2464                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2465                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2466                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2467         };
2468
2469         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2470         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2471                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2472                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2473         };
2474
2475         struct nlattr *nl_band;
2476         struct nlattr *nl_freq;
2477         struct nlattr *nl_rate;
2478         int rem_band, rem_freq, rem_rate;
2479         struct hostapd_hw_modes *mode;
2480         int idx, mode_is_set;
2481
2482         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2483                   genlmsg_attrlen(gnlh, 0), NULL);
2484
2485         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2486                 return NL_SKIP;
2487
2488         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2489                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2490                 if (!mode)
2491                         return NL_SKIP;
2492                 phy_info->modes = mode;
2493
2494                 mode_is_set = 0;
2495
2496                 mode = &phy_info->modes[*(phy_info->num_modes)];
2497                 memset(mode, 0, sizeof(*mode));
2498                 *(phy_info->num_modes) += 1;
2499
2500                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2501                           nla_len(nl_band), NULL);
2502
2503                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2504                         mode->ht_capab = nla_get_u16(
2505                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2506                 }
2507
2508                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2509                         mode->a_mpdu_params |= nla_get_u8(
2510                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2511                                 0x03;
2512                 }
2513
2514                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2515                         mode->a_mpdu_params |= nla_get_u8(
2516                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2517                                 2;
2518                 }
2519
2520                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2521                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2522                         u8 *mcs;
2523                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2524                         os_memcpy(mode->mcs_set, mcs, 16);
2525                 }
2526
2527                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2528                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2529                                   nla_len(nl_freq), freq_policy);
2530                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2531                                 continue;
2532                         mode->num_channels++;
2533                 }
2534
2535                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2536                 if (!mode->channels)
2537                         return NL_SKIP;
2538
2539                 idx = 0;
2540
2541                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2542                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2543                                   nla_len(nl_freq), freq_policy);
2544                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2545                                 continue;
2546
2547                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2548                         mode->channels[idx].flag = 0;
2549
2550                         if (!mode_is_set) {
2551                                 /* crude heuristic */
2552                                 if (mode->channels[idx].freq < 4000)
2553                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2554                                 else
2555                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2556                                 mode_is_set = 1;
2557                         }
2558
2559                         /* crude heuristic */
2560                         if (mode->channels[idx].freq < 4000)
2561                                 if (mode->channels[idx].freq == 2484)
2562                                         mode->channels[idx].chan = 14;
2563                                 else
2564                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2565                         else
2566                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2567
2568                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2569                                 mode->channels[idx].flag |=
2570                                         HOSTAPD_CHAN_DISABLED;
2571                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2572                                 mode->channels[idx].flag |=
2573                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2574                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2575                                 mode->channels[idx].flag |=
2576                                         HOSTAPD_CHAN_NO_IBSS;
2577                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2578                                 mode->channels[idx].flag |=
2579                                         HOSTAPD_CHAN_RADAR;
2580
2581                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2582                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2583                                 mode->channels[idx].max_tx_power =
2584                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2585
2586                         idx++;
2587                 }
2588
2589                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2590                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2591                                   nla_len(nl_rate), rate_policy);
2592                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2593                                 continue;
2594                         mode->num_rates++;
2595                 }
2596
2597                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2598                 if (!mode->rates)
2599                         return NL_SKIP;
2600
2601                 idx = 0;
2602
2603                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2604                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2605                                   nla_len(nl_rate), rate_policy);
2606                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2607                                 continue;
2608                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2609
2610                         /* crude heuristic */
2611                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2612                             mode->rates[idx] > 200)
2613                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2614
2615                         idx++;
2616                 }
2617         }
2618
2619         return NL_SKIP;
2620 }
2621
2622 static struct hostapd_hw_modes *
2623 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2624 {
2625         u16 m;
2626         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2627         int i, mode11g_idx = -1;
2628
2629         /* If only 802.11g mode is included, use it to construct matching
2630          * 802.11b mode data. */
2631
2632         for (m = 0; m < *num_modes; m++) {
2633                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2634                         return modes; /* 802.11b already included */
2635                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2636                         mode11g_idx = m;
2637         }
2638
2639         if (mode11g_idx < 0)
2640                 return modes; /* 2.4 GHz band not supported at all */
2641
2642         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2643         if (nmodes == NULL)
2644                 return modes; /* Could not add 802.11b mode */
2645
2646         mode = &nmodes[*num_modes];
2647         os_memset(mode, 0, sizeof(*mode));
2648         (*num_modes)++;
2649         modes = nmodes;
2650
2651         mode->mode = HOSTAPD_MODE_IEEE80211B;
2652
2653         mode11g = &modes[mode11g_idx];
2654         mode->num_channels = mode11g->num_channels;
2655         mode->channels = os_malloc(mode11g->num_channels *
2656                                    sizeof(struct hostapd_channel_data));
2657         if (mode->channels == NULL) {
2658                 (*num_modes)--;
2659                 return modes; /* Could not add 802.11b mode */
2660         }
2661         os_memcpy(mode->channels, mode11g->channels,
2662                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
2663
2664         mode->num_rates = 0;
2665         mode->rates = os_malloc(4 * sizeof(int));
2666         if (mode->rates == NULL) {
2667                 os_free(mode->channels);
2668                 (*num_modes)--;
2669                 return modes; /* Could not add 802.11b mode */
2670         }
2671
2672         for (i = 0; i < mode11g->num_rates; i++) {
2673                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2674                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2675                         continue;
2676                 mode->rates[mode->num_rates] = mode11g->rates[i];
2677                 mode->num_rates++;
2678                 if (mode->num_rates == 4)
2679                         break;
2680         }
2681
2682         if (mode->num_rates == 0) {
2683                 os_free(mode->channels);
2684                 os_free(mode->rates);
2685                 (*num_modes)--;
2686                 return modes; /* No 802.11b rates */
2687         }
2688
2689         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2690                    "information");
2691
2692         return modes;
2693 }
2694
2695
2696 static struct hostapd_hw_modes *
2697 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2698 {
2699         struct i802_bss *bss = priv;
2700         struct wpa_driver_nl80211_data *drv = bss->drv;
2701         struct nl_msg *msg;
2702         struct phy_info_arg result = {
2703                 .num_modes = num_modes,
2704                 .modes = NULL,
2705         };
2706
2707         *num_modes = 0;
2708         *flags = 0;
2709
2710         msg = nlmsg_alloc();
2711         if (!msg)
2712                 return NULL;
2713
2714         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2715                     0, NL80211_CMD_GET_WIPHY, 0);
2716
2717         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2718
2719         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2720                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2721  nla_put_failure:
2722         return NULL;
2723 }
2724
2725
2726 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2727                                          const void *data, size_t len,
2728                                          int encrypt)
2729 {
2730         __u8 rtap_hdr[] = {
2731                 0x00, 0x00, /* radiotap version */
2732                 0x0e, 0x00, /* radiotap length */
2733                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2734                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2735                 0x00,       /* padding */
2736                 0x00, 0x00, /* RX and TX flags to indicate that */
2737                 0x00, 0x00, /* this is the injected frame directly */
2738         };
2739         struct iovec iov[2] = {
2740                 {
2741                         .iov_base = &rtap_hdr,
2742                         .iov_len = sizeof(rtap_hdr),
2743                 },
2744                 {
2745                         .iov_base = (void *) data,
2746                         .iov_len = len,
2747                 }
2748         };
2749         struct msghdr msg = {
2750                 .msg_name = NULL,
2751                 .msg_namelen = 0,
2752                 .msg_iov = iov,
2753                 .msg_iovlen = 2,
2754                 .msg_control = NULL,
2755                 .msg_controllen = 0,
2756                 .msg_flags = 0,
2757         };
2758
2759         if (encrypt)
2760                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2761
2762         return sendmsg(drv->monitor_sock, &msg, 0);
2763 }
2764
2765
2766 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2767                                         size_t data_len)
2768 {
2769         struct i802_bss *bss = priv;
2770         struct wpa_driver_nl80211_data *drv = bss->drv;
2771         struct ieee80211_mgmt *mgmt;
2772         int encrypt = 1;
2773         u16 fc;
2774
2775         mgmt = (struct ieee80211_mgmt *) data;
2776         fc = le_to_host16(mgmt->frame_control);
2777
2778         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2779             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2780                 /*
2781                  * Only one of the authentication frame types is encrypted.
2782                  * In order for static WEP encryption to work properly (i.e.,
2783                  * to not encrypt the frame), we need to tell mac80211 about
2784                  * the frames that must not be encrypted.
2785                  */
2786                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2787                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2788                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2789                         encrypt = 0;
2790         }
2791
2792         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2793 }
2794
2795
2796 static int wpa_driver_nl80211_set_beacon(void *priv,
2797                                          const u8 *head, size_t head_len,
2798                                          const u8 *tail, size_t tail_len,
2799                                          int dtim_period, int beacon_int)
2800 {
2801         struct i802_bss *bss = priv;
2802         struct wpa_driver_nl80211_data *drv = bss->drv;
2803         struct nl_msg *msg;
2804         u8 cmd = NL80211_CMD_NEW_BEACON;
2805         int ret;
2806         int beacon_set;
2807         int ifindex = if_nametoindex(bss->ifname);
2808
2809         beacon_set = bss->beacon_set;
2810
2811         msg = nlmsg_alloc();
2812         if (!msg)
2813                 return -ENOMEM;
2814
2815         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2816                    beacon_set);
2817         if (beacon_set)
2818                 cmd = NL80211_CMD_SET_BEACON;
2819
2820         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2821                     0, cmd, 0);
2822         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2823         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2824         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2825         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2826         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2827
2828         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2829         if (ret) {
2830                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2831                            ret, strerror(-ret));
2832         } else {
2833                 bss->beacon_set = 1;
2834         }
2835         return ret;
2836  nla_put_failure:
2837         return -ENOBUFS;
2838 }
2839
2840
2841 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2842                                        int freq, int ht_enabled,
2843                                        int sec_channel_offset)
2844 {
2845         struct nl_msg *msg;
2846         int ret;
2847
2848         msg = nlmsg_alloc();
2849         if (!msg)
2850                 return -1;
2851
2852         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2853                     NL80211_CMD_SET_WIPHY, 0);
2854
2855         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2856         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2857         if (ht_enabled) {
2858                 switch (sec_channel_offset) {
2859                 case -1:
2860                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2861                                     NL80211_CHAN_HT40MINUS);
2862                         break;
2863                 case 1:
2864                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2865                                     NL80211_CHAN_HT40PLUS);
2866                         break;
2867                 default:
2868                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2869                                     NL80211_CHAN_HT20);
2870                         break;
2871                 }
2872         }
2873
2874         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2875         if (ret == 0)
2876                 return 0;
2877         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2878                    "%d (%s)", freq, ret, strerror(-ret));
2879 nla_put_failure:
2880         return -1;
2881 }
2882
2883
2884 static int wpa_driver_nl80211_sta_add(void *priv,
2885                                       struct hostapd_sta_add_params *params)
2886 {
2887         struct i802_bss *bss = priv;
2888         struct wpa_driver_nl80211_data *drv = bss->drv;
2889         struct nl_msg *msg;
2890         int ret = -ENOBUFS;
2891
2892         msg = nlmsg_alloc();
2893         if (!msg)
2894                 return -ENOMEM;
2895
2896         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2897                     0, NL80211_CMD_NEW_STATION, 0);
2898
2899         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
2900         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2901         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2902         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2903                 params->supp_rates);
2904         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2905                     params->listen_interval);
2906         if (params->ht_capabilities) {
2907                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2908                         sizeof(*params->ht_capabilities),
2909                         params->ht_capabilities);
2910         }
2911
2912         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2913         if (ret)
2914                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2915                            "result: %d (%s)", ret, strerror(-ret));
2916         if (ret == -EEXIST)
2917                 ret = 0;
2918  nla_put_failure:
2919         return ret;
2920 }
2921
2922
2923 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2924 {
2925         struct i802_bss *bss = priv;
2926         struct wpa_driver_nl80211_data *drv = bss->drv;
2927         struct nl_msg *msg;
2928         int ret;
2929
2930         msg = nlmsg_alloc();
2931         if (!msg)
2932                 return -ENOMEM;
2933
2934         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2935                     0, NL80211_CMD_DEL_STATION, 0);
2936
2937         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2938                     if_nametoindex(bss->ifname));
2939         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2940
2941         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2942         if (ret == -ENOENT)
2943                 return 0;
2944         return ret;
2945  nla_put_failure:
2946         return -ENOBUFS;
2947 }
2948
2949
2950 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2951                                  int ifidx)
2952 {
2953         struct nl_msg *msg;
2954
2955         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2956
2957 #ifdef HOSTAPD
2958         /* stop listening for EAPOL on this interface */
2959         del_ifidx(drv, ifidx);
2960 #endif /* HOSTAPD */
2961
2962         msg = nlmsg_alloc();
2963         if (!msg)
2964                 goto nla_put_failure;
2965
2966         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2967                     0, NL80211_CMD_DEL_INTERFACE, 0);
2968         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2969
2970         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2971                 return;
2972  nla_put_failure:
2973         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
2974 }
2975
2976
2977 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2978                                      const char *ifname,
2979                                      enum nl80211_iftype iftype,
2980                                      const u8 *addr, int wds)
2981 {
2982         struct nl_msg *msg, *flags = NULL;
2983         int ifidx;
2984         int ret = -ENOBUFS;
2985
2986         msg = nlmsg_alloc();
2987         if (!msg)
2988                 return -1;
2989
2990         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2991                     0, NL80211_CMD_NEW_INTERFACE, 0);
2992         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2993         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2994         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2995
2996         if (iftype == NL80211_IFTYPE_MONITOR) {
2997                 int err;
2998
2999                 flags = nlmsg_alloc();
3000                 if (!flags)
3001                         goto nla_put_failure;
3002
3003                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3004
3005                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3006
3007                 nlmsg_free(flags);
3008
3009                 if (err)
3010                         goto nla_put_failure;
3011         } else if (wds) {
3012                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3013         }
3014
3015         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3016         if (ret) {
3017  nla_put_failure:
3018                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3019                            ifname, ret, strerror(-ret));
3020                 return ret;
3021         }
3022
3023         ifidx = if_nametoindex(ifname);
3024         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3025                    ifname, ifidx);
3026
3027         if (ifidx <= 0)
3028                 return -1;
3029
3030 #ifdef HOSTAPD
3031         /* start listening for EAPOL on this interface */
3032         add_ifidx(drv, ifidx);
3033 #endif /* HOSTAPD */
3034
3035         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3036             linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3037                 nl80211_remove_iface(drv, ifidx);
3038                 return -1;
3039         }
3040
3041         return ifidx;
3042 }
3043
3044
3045 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3046                                 const char *ifname, enum nl80211_iftype iftype,
3047                                 const u8 *addr, int wds)
3048 {
3049         int ret;
3050
3051         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3052
3053         /* if error occured and interface exists already */
3054         if (ret == -ENFILE && if_nametoindex(ifname)) {
3055                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3056
3057                 /* Try to remove the interface that was already there. */
3058                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3059
3060                 /* Try to create the interface again */
3061                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3062                                                 wds);
3063         }
3064
3065         if (ret >= 0 && drv->disable_11b_rates)
3066                 nl80211_disable_11b_rates(drv, ret, 1);
3067
3068         return ret;
3069 }
3070
3071
3072 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3073 {
3074         struct ieee80211_hdr *hdr;
3075         u16 fc;
3076         union wpa_event_data event;
3077
3078         hdr = (struct ieee80211_hdr *) buf;
3079         fc = le_to_host16(hdr->frame_control);
3080
3081         os_memset(&event, 0, sizeof(event));
3082         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3083         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3084         event.tx_status.dst = hdr->addr1;
3085         event.tx_status.data = buf;
3086         event.tx_status.data_len = len;
3087         event.tx_status.ack = ok;
3088         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3089 }
3090
3091
3092 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3093                              u8 *buf, size_t len)
3094 {
3095         union wpa_event_data event;
3096         os_memset(&event, 0, sizeof(event));
3097         event.rx_from_unknown.frame = buf;
3098         event.rx_from_unknown.len = len;
3099         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3100 }
3101
3102
3103 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3104                          u8 *buf, size_t len, int datarate, int ssi_signal)
3105 {
3106         struct ieee80211_hdr *hdr;
3107         u16 fc;
3108         union wpa_event_data event;
3109
3110         hdr = (struct ieee80211_hdr *) buf;
3111         fc = le_to_host16(hdr->frame_control);
3112
3113         switch (WLAN_FC_GET_TYPE(fc)) {
3114         case WLAN_FC_TYPE_MGMT:
3115                 os_memset(&event, 0, sizeof(event));
3116                 event.rx_mgmt.frame = buf;
3117                 event.rx_mgmt.frame_len = len;
3118                 event.rx_mgmt.datarate = datarate;
3119                 event.rx_mgmt.ssi_signal = ssi_signal;
3120                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3121                 break;
3122         case WLAN_FC_TYPE_CTRL:
3123                 /* can only get here with PS-Poll frames */
3124                 wpa_printf(MSG_DEBUG, "CTRL");
3125                 from_unknown_sta(drv, buf, len);
3126                 break;
3127         case WLAN_FC_TYPE_DATA:
3128                 from_unknown_sta(drv, buf, len);
3129                 break;
3130         }
3131 }
3132
3133
3134 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3135 {
3136         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3137         int len;
3138         unsigned char buf[3000];
3139         struct ieee80211_radiotap_iterator iter;
3140         int ret;
3141         int datarate = 0, ssi_signal = 0;
3142         int injected = 0, failed = 0, rxflags = 0;
3143
3144         len = recv(sock, buf, sizeof(buf), 0);
3145         if (len < 0) {
3146                 perror("recv");
3147                 return;
3148         }
3149
3150         if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3151                 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3152                            "frame since Probe Request reporting is disabled");
3153                 return;
3154         }
3155
3156         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3157                 printf("received invalid radiotap frame\n");
3158                 return;
3159         }
3160
3161         while (1) {
3162                 ret = ieee80211_radiotap_iterator_next(&iter);
3163                 if (ret == -ENOENT)
3164                         break;
3165                 if (ret) {
3166                         printf("received invalid radiotap frame (%d)\n", ret);
3167                         return;
3168                 }
3169                 switch (iter.this_arg_index) {
3170                 case IEEE80211_RADIOTAP_FLAGS:
3171                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3172                                 len -= 4;
3173                         break;
3174                 case IEEE80211_RADIOTAP_RX_FLAGS:
3175                         rxflags = 1;
3176                         break;
3177                 case IEEE80211_RADIOTAP_TX_FLAGS:
3178                         injected = 1;
3179                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3180                                         IEEE80211_RADIOTAP_F_TX_FAIL;
3181                         break;
3182                 case IEEE80211_RADIOTAP_DATA_RETRIES:
3183                         break;
3184                 case IEEE80211_RADIOTAP_CHANNEL:
3185                         /* TODO: convert from freq/flags to channel number */
3186                         break;
3187                 case IEEE80211_RADIOTAP_RATE:
3188                         datarate = *iter.this_arg * 5;
3189                         break;
3190                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3191                         ssi_signal = *iter.this_arg;
3192                         break;
3193                 }
3194         }
3195
3196         if (rxflags && injected)
3197                 return;
3198
3199         if (!injected)
3200                 handle_frame(drv, buf + iter.max_length,
3201                              len - iter.max_length, datarate, ssi_signal);
3202         else
3203                 handle_tx_callback(drv->ctx, buf + iter.max_length,
3204                                    len - iter.max_length, !failed);
3205 }
3206
3207
3208 /*
3209  * we post-process the filter code later and rewrite
3210  * this to the offset to the last instruction
3211  */
3212 #define PASS    0xFF
3213 #define FAIL    0xFE
3214
3215 static struct sock_filter msock_filter_insns[] = {
3216         /*
3217          * do a little-endian load of the radiotap length field
3218          */
3219         /* load lower byte into A */
3220         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
3221         /* put it into X (== index register) */
3222         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3223         /* load upper byte into A */
3224         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
3225         /* left-shift it by 8 */
3226         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3227         /* or with X */
3228         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3229         /* put result into X */
3230         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3231
3232         /*
3233          * Allow management frames through, this also gives us those
3234          * management frames that we sent ourselves with status
3235          */
3236         /* load the lower byte of the IEEE 802.11 frame control field */
3237         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
3238         /* mask off frame type and version */
3239         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3240         /* accept frame if it's both 0, fall through otherwise */
3241         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3242
3243         /*
3244          * TODO: add a bit to radiotap RX flags that indicates
3245          * that the sending station is not associated, then
3246          * add a filter here that filters on our DA and that flag
3247          * to allow us to deauth frames to that bad station.
3248          *
3249          * Not a regression -- we didn't do it before either.
3250          */
3251
3252 #if 0
3253         /*
3254          * drop non-data frames
3255          */
3256         /* load the lower byte of the frame control field */
3257         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3258         /* mask off QoS bit */
3259         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
3260         /* drop non-data frames */
3261         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
3262 #endif
3263         /* load the upper byte of the frame control field */
3264         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
3265         /* mask off toDS/fromDS */
3266         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
3267         /* accept WDS frames */
3268         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
3269
3270         /*
3271          * add header length to index
3272          */
3273         /* load the lower byte of the frame control field */
3274         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3275         /* mask off QoS bit */
3276         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
3277         /* right shift it by 6 to give 0 or 2 */
3278         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
3279         /* add data frame header length */
3280         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
3281         /* add index, was start of 802.11 header */
3282         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
3283         /* move to index, now start of LL header */
3284         BPF_STMT(BPF_MISC | BPF_TAX, 0),
3285
3286         /*
3287          * Accept empty data frames, we use those for
3288          * polling activity.
3289          */
3290         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
3291         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3292
3293         /*
3294          * Accept EAPOL frames
3295          */
3296         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
3297         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3298         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
3299         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3300
3301         /* keep these last two statements or change the code below */
3302         /* return 0 == "DROP" */
3303         BPF_STMT(BPF_RET | BPF_K, 0),
3304         /* return ~0 == "keep all" */
3305         BPF_STMT(BPF_RET | BPF_K, ~0),
3306 };
3307
3308 static struct sock_fprog msock_filter = {
3309         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3310         .filter = msock_filter_insns,
3311 };
3312
3313
3314 static int add_monitor_filter(int s)
3315 {
3316         int idx;
3317
3318         /* rewrite all PASS/FAIL jump offsets */
3319         for (idx = 0; idx < msock_filter.len; idx++) {
3320                 struct sock_filter *insn = &msock_filter_insns[idx];
3321
3322                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3323                         if (insn->code == (BPF_JMP|BPF_JA)) {
3324                                 if (insn->k == PASS)
3325                                         insn->k = msock_filter.len - idx - 2;
3326                                 else if (insn->k == FAIL)
3327                                         insn->k = msock_filter.len - idx - 3;
3328                         }
3329
3330                         if (insn->jt == PASS)
3331                                 insn->jt = msock_filter.len - idx - 2;
3332                         else if (insn->jt == FAIL)
3333                                 insn->jt = msock_filter.len - idx - 3;
3334
3335                         if (insn->jf == PASS)
3336                                 insn->jf = msock_filter.len - idx - 2;
3337                         else if (insn->jf == FAIL)
3338                                 insn->jf = msock_filter.len - idx - 3;
3339                 }
3340         }
3341
3342         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3343                        &msock_filter, sizeof(msock_filter))) {
3344                 perror("SO_ATTACH_FILTER");
3345                 return -1;
3346         }
3347
3348         return 0;
3349 }
3350
3351
3352 static void nl80211_remove_monitor_interface(
3353         struct wpa_driver_nl80211_data *drv)
3354 {
3355         if (drv->monitor_ifidx >= 0) {
3356                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3357                 drv->monitor_ifidx = -1;
3358         }
3359         if (drv->monitor_sock >= 0) {
3360                 eloop_unregister_read_sock(drv->monitor_sock);
3361                 close(drv->monitor_sock);
3362                 drv->monitor_sock = -1;
3363         }
3364 }
3365
3366
3367 static int
3368 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3369 {
3370         char buf[IFNAMSIZ];
3371         struct sockaddr_ll ll;
3372         int optval;
3373         socklen_t optlen;
3374
3375         snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3376         buf[IFNAMSIZ - 1] = '\0';
3377
3378         drv->monitor_ifidx =
3379                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3380                                      0);
3381
3382         if (drv->monitor_ifidx < 0)
3383                 return -1;
3384
3385         if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3386                 goto error;
3387
3388         memset(&ll, 0, sizeof(ll));
3389         ll.sll_family = AF_PACKET;
3390         ll.sll_ifindex = drv->monitor_ifidx;
3391         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3392         if (drv->monitor_sock < 0) {
3393                 perror("socket[PF_PACKET,SOCK_RAW]");
3394                 goto error;
3395         }
3396
3397         if (add_monitor_filter(drv->monitor_sock)) {
3398                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3399                            "interface; do filtering in user space");
3400                 /* This works, but will cost in performance. */
3401         }
3402
3403         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3404                 perror("monitor socket bind");
3405                 goto error;
3406         }
3407
3408         optlen = sizeof(optval);
3409         optval = 20;
3410         if (setsockopt
3411             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3412                 perror("Failed to set socket priority");
3413                 goto error;
3414         }
3415
3416         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3417                                      drv, NULL)) {
3418                 printf("Could not register monitor read socket\n");
3419                 goto error;
3420         }
3421
3422         return 0;
3423  error:
3424         nl80211_remove_monitor_interface(drv);
3425         return -1;
3426 }
3427
3428
3429 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3430
3431 static int wpa_driver_nl80211_hapd_send_eapol(
3432         void *priv, const u8 *addr, const u8 *data,
3433         size_t data_len, int encrypt, const u8 *own_addr)
3434 {
3435         struct i802_bss *bss = priv;
3436         struct wpa_driver_nl80211_data *drv = bss->drv;
3437         struct ieee80211_hdr *hdr;
3438         size_t len;
3439         u8 *pos;
3440         int res;
3441 #if 0 /* FIX */
3442         int qos = sta->flags & WPA_STA_WMM;
3443 #else
3444         int qos = 0;
3445 #endif
3446
3447         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3448                 data_len;
3449         hdr = os_zalloc(len);
3450         if (hdr == NULL) {
3451                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3452                        (unsigned long) len);
3453                 return -1;
3454         }
3455
3456         hdr->frame_control =
3457                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3458         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3459         if (encrypt)
3460                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3461 #if 0 /* To be enabled if qos determination is added above */
3462         if (qos) {
3463                 hdr->frame_control |=
3464                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3465         }
3466 #endif
3467
3468         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3469         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3470         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3471         pos = (u8 *) (hdr + 1);
3472
3473 #if 0 /* To be enabled if qos determination is added above */
3474         if (qos) {
3475                 /* add an empty QoS header if needed */
3476                 pos[0] = 0;
3477                 pos[1] = 0;
3478                 pos += 2;
3479         }
3480 #endif
3481
3482         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3483         pos += sizeof(rfc1042_header);
3484         WPA_PUT_BE16(pos, ETH_P_PAE);
3485         pos += 2;
3486         memcpy(pos, data, data_len);
3487
3488         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3489         if (res < 0) {
3490                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3491                            "failed: %d (%s)",
3492                            (unsigned long) len, errno, strerror(errno));
3493         }
3494         os_free(hdr);
3495
3496         return res;
3497 }
3498
3499
3500 static u32 sta_flags_nl80211(int flags)
3501 {
3502         u32 f = 0;
3503
3504         if (flags & WPA_STA_AUTHORIZED)
3505                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3506         if (flags & WPA_STA_WMM)
3507                 f |= BIT(NL80211_STA_FLAG_WME);
3508         if (flags & WPA_STA_SHORT_PREAMBLE)
3509                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3510         if (flags & WPA_STA_MFP)
3511                 f |= BIT(NL80211_STA_FLAG_MFP);
3512
3513         return f;
3514 }
3515
3516
3517 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3518                                             int total_flags,
3519                                             int flags_or, int flags_and)
3520 {
3521         struct i802_bss *bss = priv;
3522         struct wpa_driver_nl80211_data *drv = bss->drv;
3523         struct nl_msg *msg, *flags = NULL;
3524         struct nl80211_sta_flag_update upd;
3525
3526         msg = nlmsg_alloc();
3527         if (!msg)
3528                 return -ENOMEM;
3529
3530         flags = nlmsg_alloc();
3531         if (!flags) {
3532                 nlmsg_free(msg);
3533                 return -ENOMEM;
3534         }
3535
3536         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3537                     0, NL80211_CMD_SET_STATION, 0);
3538
3539         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3540                     if_nametoindex(bss->ifname));
3541         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3542
3543         /*
3544          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3545          * can be removed eventually.
3546          */
3547         if (total_flags & WPA_STA_AUTHORIZED)
3548                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3549
3550         if (total_flags & WPA_STA_WMM)
3551                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3552
3553         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3554                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3555
3556         if (total_flags & WPA_STA_MFP)
3557                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3558
3559         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3560                 goto nla_put_failure;
3561
3562         os_memset(&upd, 0, sizeof(upd));
3563         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3564         upd.set = sta_flags_nl80211(flags_or);
3565         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3566
3567         nlmsg_free(flags);
3568
3569         return send_and_recv_msgs(drv, msg, NULL, NULL);
3570  nla_put_failure:
3571         nlmsg_free(flags);
3572         return -ENOBUFS;
3573 }
3574
3575
3576 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3577                                  struct wpa_driver_associate_params *params)
3578 {
3579         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3580             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3581                 nl80211_remove_monitor_interface(drv);
3582                 return -1;
3583         }
3584
3585         /* TODO: setup monitor interface (and add code somewhere to remove this
3586          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3587
3588         return 0;
3589 }
3590
3591
3592 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3593 {
3594         struct nl_msg *msg;
3595         int ret = -1;
3596
3597         msg = nlmsg_alloc();
3598         if (!msg)
3599                 return -1;
3600
3601         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3602                     NL80211_CMD_LEAVE_IBSS, 0);
3603         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3604         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3605         msg = NULL;
3606         if (ret) {
3607                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3608                            "(%s)", ret, strerror(-ret));
3609                 goto nla_put_failure;
3610         }
3611
3612         ret = 0;
3613         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3614
3615 nla_put_failure:
3616         nlmsg_free(msg);
3617         return ret;
3618 }
3619
3620
3621 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3622                                    struct wpa_driver_associate_params *params)
3623 {
3624         struct nl_msg *msg;
3625         int ret = -1;
3626         int count = 0;
3627
3628         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3629
3630         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3631                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3632                            "IBSS mode");
3633                 return -1;
3634         }
3635
3636 retry:
3637         msg = nlmsg_alloc();
3638         if (!msg)
3639                 return -1;
3640
3641         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3642                     NL80211_CMD_JOIN_IBSS, 0);
3643         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3644
3645         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3646                 goto nla_put_failure;
3647
3648         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3649                           params->ssid, params->ssid_len);
3650         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3651                 params->ssid);
3652         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3653         drv->ssid_len = params->ssid_len;
3654
3655         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3656         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3657
3658         ret = nl80211_set_conn_keys(params, msg);
3659         if (ret)
3660                 goto nla_put_failure;
3661
3662         if (params->wpa_ie) {
3663                 wpa_hexdump(MSG_DEBUG,
3664                             "  * Extra IEs for Beacon/Probe Response frames",
3665                             params->wpa_ie, params->wpa_ie_len);
3666                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3667                         params->wpa_ie);
3668         }
3669
3670         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3671         msg = NULL;
3672         if (ret) {
3673                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3674                            ret, strerror(-ret));
3675                 count++;
3676                 if (ret == -EALREADY && count == 1) {
3677                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3678                                    "forced leave");
3679                         nl80211_leave_ibss(drv);
3680                         nlmsg_free(msg);
3681                         goto retry;
3682                 }
3683
3684                 goto nla_put_failure;
3685         }
3686         ret = 0;
3687         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3688
3689 nla_put_failure:
3690         nlmsg_free(msg);
3691         return ret;
3692 }
3693
3694
3695 static int wpa_driver_nl80211_connect(
3696         struct wpa_driver_nl80211_data *drv,
3697         struct wpa_driver_associate_params *params)
3698 {
3699         struct nl_msg *msg;
3700         enum nl80211_auth_type type;
3701         int ret = 0;
3702
3703         msg = nlmsg_alloc();
3704         if (!msg)
3705                 return -1;
3706
3707         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3708         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3709                     NL80211_CMD_CONNECT, 0);
3710
3711         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3712         if (params->bssid) {
3713                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3714                            MAC2STR(params->bssid));
3715                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3716         }
3717         if (params->freq) {
3718                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3719                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3720         }
3721         if (params->ssid) {
3722                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3723                                   params->ssid, params->ssid_len);
3724                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3725                         params->ssid);
3726                 if (params->ssid_len > sizeof(drv->ssid))
3727                         goto nla_put_failure;
3728                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3729                 drv->ssid_len = params->ssid_len;
3730         }
3731         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3732         if (params->wpa_ie)
3733                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3734                         params->wpa_ie);
3735
3736         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3737                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3738         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3739                 type = NL80211_AUTHTYPE_SHARED_KEY;
3740         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3741                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3742         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3743                 type = NL80211_AUTHTYPE_FT;
3744         else
3745                 goto nla_put_failure;
3746
3747         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3748         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3749
3750         if (params->wpa_ie && params->wpa_ie_len) {
3751                 enum nl80211_wpa_versions ver;
3752
3753                 if (params->wpa_ie[0] == WLAN_EID_RSN)
3754                         ver = NL80211_WPA_VERSION_2;
3755                 else
3756                         ver = NL80211_WPA_VERSION_1;
3757
3758                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
3759                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3760         }
3761
3762         if (params->pairwise_suite != CIPHER_NONE) {
3763                 int cipher;
3764
3765                 switch (params->pairwise_suite) {
3766                 case CIPHER_WEP40:
3767                         cipher = WLAN_CIPHER_SUITE_WEP40;
3768                         break;
3769                 case CIPHER_WEP104:
3770                         cipher = WLAN_CIPHER_SUITE_WEP104;
3771                         break;
3772                 case CIPHER_CCMP:
3773                         cipher = WLAN_CIPHER_SUITE_CCMP;
3774                         break;
3775                 case CIPHER_TKIP:
3776                 default:
3777                         cipher = WLAN_CIPHER_SUITE_TKIP;
3778                         break;
3779                 }
3780                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3781         }
3782
3783         if (params->group_suite != CIPHER_NONE) {
3784                 int cipher;
3785
3786                 switch (params->group_suite) {
3787                 case CIPHER_WEP40:
3788                         cipher = WLAN_CIPHER_SUITE_WEP40;
3789                         break;
3790                 case CIPHER_WEP104:
3791                         cipher = WLAN_CIPHER_SUITE_WEP104;
3792                         break;
3793                 case CIPHER_CCMP:
3794                         cipher = WLAN_CIPHER_SUITE_CCMP;
3795                         break;
3796                 case CIPHER_TKIP:
3797                 default:
3798                         cipher = WLAN_CIPHER_SUITE_TKIP;
3799                         break;
3800                 }
3801                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3802         }
3803
3804         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3805             params->key_mgmt_suite == KEY_MGMT_PSK) {
3806                 int mgmt = WLAN_AKM_SUITE_PSK;
3807
3808                 switch (params->key_mgmt_suite) {
3809                 case KEY_MGMT_802_1X:
3810                         mgmt = WLAN_AKM_SUITE_8021X;
3811                         break;
3812                 case KEY_MGMT_PSK:
3813                 default:
3814                         mgmt = WLAN_AKM_SUITE_PSK;
3815                         break;
3816                 }
3817                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3818         }
3819
3820         ret = nl80211_set_conn_keys(params, msg);
3821         if (ret)
3822                 goto nla_put_failure;
3823
3824         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3825         msg = NULL;
3826         if (ret) {
3827                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3828                            "(%s)", ret, strerror(-ret));
3829                 goto nla_put_failure;
3830         }
3831         ret = 0;
3832         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3833
3834 nla_put_failure:
3835         nlmsg_free(msg);
3836         return ret;
3837
3838 }
3839
3840
3841 static int wpa_driver_nl80211_associate(
3842         void *priv, struct wpa_driver_associate_params *params)
3843 {
3844         struct i802_bss *bss = priv;
3845         struct wpa_driver_nl80211_data *drv = bss->drv;
3846         int ret = -1;
3847         struct nl_msg *msg;
3848
3849         if (params->mode == IEEE80211_MODE_AP)
3850                 return wpa_driver_nl80211_ap(drv, params);
3851
3852         if (params->mode == IEEE80211_MODE_IBSS)
3853                 return wpa_driver_nl80211_ibss(drv, params);
3854
3855         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3856                 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
3857                         return -1;
3858                 return wpa_driver_nl80211_connect(drv, params);
3859         }
3860
3861         drv->associated = 0;
3862
3863         msg = nlmsg_alloc();
3864         if (!msg)
3865                 return -1;
3866
3867         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3868                    drv->ifindex);
3869         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3870                     NL80211_CMD_ASSOCIATE, 0);
3871
3872         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3873         if (params->bssid) {
3874                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3875                            MAC2STR(params->bssid));
3876                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3877         }
3878         if (params->freq) {
3879                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3880                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3881                 drv->assoc_freq = params->freq;
3882         } else
3883                 drv->assoc_freq = 0;
3884         if (params->ssid) {
3885                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3886                                   params->ssid, params->ssid_len);
3887                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3888                         params->ssid);
3889                 if (params->ssid_len > sizeof(drv->ssid))
3890                         goto nla_put_failure;
3891                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3892                 drv->ssid_len = params->ssid_len;
3893         }
3894         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3895         if (params->wpa_ie)
3896                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3897                         params->wpa_ie);
3898
3899 #ifdef CONFIG_IEEE80211W
3900         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3901                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3902 #endif /* CONFIG_IEEE80211W */
3903
3904         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3905
3906         if (params->prev_bssid) {
3907                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
3908                            MAC2STR(params->prev_bssid));
3909                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3910                         params->prev_bssid);
3911         }
3912
3913         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3914         msg = NULL;
3915         if (ret) {
3916                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3917                            "(%s)", ret, strerror(-ret));
3918                 nl80211_dump_scan(drv);
3919                 goto nla_put_failure;
3920         }
3921         ret = 0;
3922         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3923                    "successfully");
3924
3925 nla_put_failure:
3926         nlmsg_free(msg);
3927         return ret;
3928 }
3929
3930
3931 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3932                             int ifindex, int mode)
3933 {
3934         struct nl_msg *msg;
3935         int ret = -ENOBUFS;
3936
3937         msg = nlmsg_alloc();
3938         if (!msg)
3939                 return -ENOMEM;
3940
3941         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3942                     0, NL80211_CMD_SET_INTERFACE, 0);
3943         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3944         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3945
3946         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3947         if (!ret)
3948                 return 0;
3949 nla_put_failure:
3950         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3951                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
3952         return ret;
3953 }
3954
3955
3956 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3957 {
3958         struct i802_bss *bss = priv;
3959         struct wpa_driver_nl80211_data *drv = bss->drv;
3960         int ret = -1;
3961         int nlmode;
3962
3963         switch (mode) {
3964         case 0:
3965                 nlmode = NL80211_IFTYPE_STATION;
3966                 break;
3967         case 1:
3968                 nlmode = NL80211_IFTYPE_ADHOC;
3969                 break;
3970         case 2:
3971                 nlmode = NL80211_IFTYPE_AP;
3972                 break;
3973         default:
3974                 return -1;
3975         }
3976
3977         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3978                 drv->nlmode = nlmode;
3979                 ret = 0;
3980                 goto done;
3981         }
3982
3983         if (nlmode == drv->nlmode) {
3984                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3985                            "requested mode - ignore error");
3986                 ret = 0;
3987                 goto done; /* Already in the requested mode */
3988         }
3989
3990         /* mac80211 doesn't allow mode changes while the device is up, so
3991          * take the device down, try to set the mode again, and bring the
3992          * device back up.
3993          */
3994         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
3995                 /* Try to set the mode again while the interface is down */
3996                 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3997                 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
3998                         ret = -1;
3999         }
4000
4001         if (!ret) {
4002                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4003                            "interface is down");
4004                 drv->nlmode = nlmode;
4005         }
4006
4007 done:
4008         if (!ret && nlmode == NL80211_IFTYPE_AP) {
4009                 /* Setup additional AP mode functionality if needed */
4010                 if (drv->monitor_ifidx < 0 &&
4011                     nl80211_create_monitor_interface(drv))
4012                         return -1;
4013         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4014                 /* Remove additional AP mode functionality */
4015                 nl80211_remove_monitor_interface(drv);
4016                 bss->beacon_set = 0;
4017         }
4018
4019         if (ret)
4020                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4021                            "from %d failed", nlmode, drv->nlmode);
4022
4023         return ret;
4024 }
4025
4026
4027 static int wpa_driver_nl80211_get_capa(void *priv,
4028                                        struct wpa_driver_capa *capa)
4029 {
4030         struct i802_bss *bss = priv;
4031         struct wpa_driver_nl80211_data *drv = bss->drv;
4032         if (!drv->has_capability)
4033                 return -1;
4034         os_memcpy(capa, &drv->capa, sizeof(*capa));
4035         return 0;
4036 }
4037
4038
4039 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4040 {
4041         struct i802_bss *bss = priv;
4042         struct wpa_driver_nl80211_data *drv = bss->drv;
4043
4044         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4045                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4046         drv->operstate = state;
4047         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4048                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4049 }
4050
4051
4052 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4053 {
4054         struct i802_bss *bss = priv;
4055         struct wpa_driver_nl80211_data *drv = bss->drv;
4056         struct nl_msg *msg;
4057         struct nl80211_sta_flag_update upd;
4058
4059         msg = nlmsg_alloc();
4060         if (!msg)
4061                 return -ENOMEM;
4062
4063         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4064                     0, NL80211_CMD_SET_STATION, 0);
4065
4066         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4067                     if_nametoindex(bss->ifname));
4068         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4069
4070         os_memset(&upd, 0, sizeof(upd));
4071         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4072         if (authorized)
4073                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4074         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4075
4076         return send_and_recv_msgs(drv, msg, NULL, NULL);
4077  nla_put_failure:
4078         return -ENOBUFS;
4079 }
4080
4081
4082 #ifdef HOSTAPD
4083
4084 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4085 {
4086         int i;
4087         int *old;
4088
4089         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4090                    ifidx);
4091         for (i = 0; i < drv->num_if_indices; i++) {
4092                 if (drv->if_indices[i] == 0) {
4093                         drv->if_indices[i] = ifidx;
4094                         return;
4095                 }
4096         }
4097
4098         if (drv->if_indices != drv->default_if_indices)
4099                 old = drv->if_indices;
4100         else
4101                 old = NULL;
4102
4103         drv->if_indices = os_realloc(old,
4104                                      sizeof(int) * (drv->num_if_indices + 1));
4105         if (!drv->if_indices) {
4106                 if (!old)
4107                         drv->if_indices = drv->default_if_indices;
4108                 else
4109                         drv->if_indices = old;
4110                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4111                            "interfaces");
4112                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4113                 return;
4114         }
4115         drv->if_indices[drv->num_if_indices] = ifidx;
4116         drv->num_if_indices++;
4117 }
4118
4119
4120 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4121 {
4122         int i;
4123
4124         for (i = 0; i < drv->num_if_indices; i++) {
4125                 if (drv->if_indices[i] == ifidx) {
4126                         drv->if_indices[i] = 0;
4127                         break;
4128                 }
4129         }
4130 }
4131
4132
4133 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4134 {
4135         int i;
4136
4137         for (i = 0; i < drv->num_if_indices; i++)
4138                 if (drv->if_indices[i] == ifidx)
4139                         return 1;
4140
4141         return 0;
4142 }
4143
4144
4145 static inline int min_int(int a, int b)
4146 {
4147         if (a < b)
4148                 return a;
4149         return b;
4150 }
4151
4152
4153 static int get_key_handler(struct nl_msg *msg, void *arg)
4154 {
4155         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4156         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4157
4158         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4159                   genlmsg_attrlen(gnlh, 0), NULL);
4160
4161         /*
4162          * TODO: validate the key index and mac address!
4163          * Otherwise, there's a race condition as soon as
4164          * the kernel starts sending key notifications.
4165          */
4166
4167         if (tb[NL80211_ATTR_KEY_SEQ])
4168                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4169                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4170         return NL_SKIP;
4171 }
4172
4173
4174 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4175                            int idx, u8 *seq)
4176 {
4177         struct i802_bss *bss = priv;
4178         struct wpa_driver_nl80211_data *drv = bss->drv;
4179         struct nl_msg *msg;
4180
4181         msg = nlmsg_alloc();
4182         if (!msg)
4183                 return -ENOMEM;
4184
4185         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4186                     0, NL80211_CMD_GET_KEY, 0);
4187
4188         if (addr)
4189                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4190         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4191         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4192
4193         memset(seq, 0, 6);
4194
4195         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4196  nla_put_failure:
4197         return -ENOBUFS;
4198 }
4199
4200
4201 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4202                               int mode)
4203 {
4204         struct i802_bss *bss = priv;
4205         struct wpa_driver_nl80211_data *drv = bss->drv;
4206         struct nl_msg *msg;
4207         u8 rates[NL80211_MAX_SUPP_RATES];
4208         u8 rates_len = 0;
4209         int i;
4210
4211         msg = nlmsg_alloc();
4212         if (!msg)
4213                 return -ENOMEM;
4214
4215         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4216                     NL80211_CMD_SET_BSS, 0);
4217
4218         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4219                 rates[rates_len++] = basic_rates[i] / 5;
4220
4221         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4222
4223         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4224
4225         return send_and_recv_msgs(drv, msg, NULL, NULL);
4226  nla_put_failure:
4227         return -ENOBUFS;
4228 }
4229
4230 #endif /* HOSTAPD */
4231
4232
4233 /* Set kernel driver on given frequency (MHz) */
4234 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4235 {
4236         struct i802_bss *bss = priv;
4237         struct wpa_driver_nl80211_data *drv = bss->drv;
4238         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4239                                            freq->sec_channel_offset);
4240 }
4241
4242
4243 #ifdef HOSTAPD
4244
4245 static int i802_set_rts(void *priv, int rts)
4246 {
4247         struct i802_bss *bss = priv;
4248         struct wpa_driver_nl80211_data *drv = bss->drv;
4249         struct nl_msg *msg;
4250         int ret = -ENOBUFS;
4251         u32 val;
4252
4253         msg = nlmsg_alloc();
4254         if (!msg)
4255                 return -ENOMEM;
4256
4257         if (rts >= 2347)
4258                 val = (u32) -1;
4259         else
4260                 val = rts;
4261
4262         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4263                     0, NL80211_CMD_SET_WIPHY, 0);
4264         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4265         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4266
4267         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4268         if (!ret)
4269                 return 0;
4270 nla_put_failure:
4271         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4272                    "%d (%s)", rts, ret, strerror(-ret));
4273         return ret;
4274 }
4275
4276
4277 static int i802_set_frag(void *priv, int frag)
4278 {
4279         struct i802_bss *bss = priv;
4280         struct wpa_driver_nl80211_data *drv = bss->drv;
4281         struct nl_msg *msg;
4282         int ret = -ENOBUFS;
4283         u32 val;
4284
4285         msg = nlmsg_alloc();
4286         if (!msg)
4287                 return -ENOMEM;
4288
4289         if (frag >= 2346)
4290                 val = (u32) -1;
4291         else
4292                 val = frag;
4293
4294         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4295                     0, NL80211_CMD_SET_WIPHY, 0);
4296         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4297         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4298
4299         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4300         if (!ret)
4301                 return 0;
4302 nla_put_failure:
4303         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4304                    "%d: %d (%s)", frag, ret, strerror(-ret));
4305         return ret;
4306 }
4307
4308
4309 static int i802_flush(void *priv)
4310 {
4311         struct i802_bss *bss = priv;
4312         struct wpa_driver_nl80211_data *drv = bss->drv;
4313         struct nl_msg *msg;
4314
4315         msg = nlmsg_alloc();
4316         if (!msg)
4317                 return -1;
4318
4319         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4320                     0, NL80211_CMD_DEL_STATION, 0);
4321
4322         /*
4323          * XXX: FIX! this needs to flush all VLANs too
4324          */
4325         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4326                     if_nametoindex(bss->ifname));
4327
4328         return send_and_recv_msgs(drv, msg, NULL, NULL);
4329  nla_put_failure:
4330         return -ENOBUFS;
4331 }
4332
4333
4334 static int get_sta_handler(struct nl_msg *msg, void *arg)
4335 {
4336         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4337         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4338         struct hostap_sta_driver_data *data = arg;
4339         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4340         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4341                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4342                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4343                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4344                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4345                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4346         };
4347
4348         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4349                   genlmsg_attrlen(gnlh, 0), NULL);
4350
4351         /*
4352          * TODO: validate the interface and mac address!
4353          * Otherwise, there's a race condition as soon as
4354          * the kernel starts sending station notifications.
4355          */
4356
4357         if (!tb[NL80211_ATTR_STA_INFO]) {
4358                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4359                 return NL_SKIP;
4360         }
4361         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4362                              tb[NL80211_ATTR_STA_INFO],
4363                              stats_policy)) {
4364                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4365                 return NL_SKIP;
4366         }
4367
4368         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4369                 data->inactive_msec =
4370                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4371         if (stats[NL80211_STA_INFO_RX_BYTES])
4372                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4373         if (stats[NL80211_STA_INFO_TX_BYTES])
4374                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4375         if (stats[NL80211_STA_INFO_RX_PACKETS])
4376                 data->rx_packets =
4377                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4378         if (stats[NL80211_STA_INFO_TX_PACKETS])
4379                 data->tx_packets =
4380                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4381
4382         return NL_SKIP;
4383 }
4384
4385 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4386                               const u8 *addr)
4387 {
4388         struct i802_bss *bss = priv;
4389         struct wpa_driver_nl80211_data *drv = bss->drv;
4390         struct nl_msg *msg;
4391
4392         os_memset(data, 0, sizeof(*data));
4393         msg = nlmsg_alloc();
4394         if (!msg)
4395                 return -ENOMEM;
4396
4397         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4398                     0, NL80211_CMD_GET_STATION, 0);
4399
4400         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4401         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4402
4403         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4404  nla_put_failure:
4405         return -ENOBUFS;
4406 }
4407
4408
4409 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4410                                     int cw_min, int cw_max, int burst_time)
4411 {
4412         struct i802_bss *bss = priv;
4413         struct wpa_driver_nl80211_data *drv = bss->drv;
4414         struct nl_msg *msg;
4415         struct nlattr *txq, *params;
4416
4417         msg = nlmsg_alloc();
4418         if (!msg)
4419                 return -1;
4420
4421         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4422                     0, NL80211_CMD_SET_WIPHY, 0);
4423
4424         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4425
4426         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4427         if (!txq)
4428                 goto nla_put_failure;
4429
4430         /* We are only sending parameters for a single TXQ at a time */
4431         params = nla_nest_start(msg, 1);
4432         if (!params)
4433                 goto nla_put_failure;
4434
4435         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4436         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4437          * 32 usec, so need to convert the value here. */
4438         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4439         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4440         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4441         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4442
4443         nla_nest_end(msg, params);
4444
4445         nla_nest_end(msg, txq);
4446
4447         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4448                 return 0;
4449  nla_put_failure:
4450         return -1;
4451 }
4452
4453
4454 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4455 {
4456         struct i802_bss *bss = priv;
4457         struct wpa_driver_nl80211_data *drv = bss->drv;
4458         struct nl_msg *msg;
4459
4460         msg = nlmsg_alloc();
4461         if (!msg)
4462                 return -ENOMEM;
4463
4464         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4465                     NL80211_CMD_SET_BSS, 0);
4466
4467         if (cts >= 0)
4468                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4469         if (preamble >= 0)
4470                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4471         if (slot >= 0)
4472                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4473
4474         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4475
4476         return send_and_recv_msgs(drv, msg, NULL, NULL);
4477  nla_put_failure:
4478         return -ENOBUFS;
4479 }
4480
4481
4482 static int i802_set_cts_protect(void *priv, int value)
4483 {
4484         return i802_set_bss(priv, value, -1, -1);
4485 }
4486
4487
4488 static int i802_set_preamble(void *priv, int value)
4489 {
4490         return i802_set_bss(priv, -1, value, -1);
4491 }
4492
4493
4494 static int i802_set_short_slot_time(void *priv, int value)
4495 {
4496         return i802_set_bss(priv, -1, -1, value);
4497 }
4498
4499
4500 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4501                              const char *ifname, int vlan_id)
4502 {
4503         struct i802_bss *bss = priv;
4504         struct wpa_driver_nl80211_data *drv = bss->drv;
4505         struct nl_msg *msg;
4506
4507         msg = nlmsg_alloc();
4508         if (!msg)
4509                 return -ENOMEM;
4510
4511         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4512                     0, NL80211_CMD_SET_STATION, 0);
4513
4514         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4515                     if_nametoindex(bss->ifname));
4516         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4517         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4518                     if_nametoindex(ifname));
4519
4520         return send_and_recv_msgs(drv, msg, NULL, NULL);
4521  nla_put_failure:
4522         return -ENOBUFS;
4523 }
4524
4525
4526 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4527 {
4528         struct i802_bss *bss = priv;
4529         struct wpa_driver_nl80211_data *drv = bss->drv;
4530         char name[IFNAMSIZ + 1];
4531
4532         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4533         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4534                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4535         if (val) {
4536                 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4537                                          NULL, 1) < 0)
4538                         return -1;
4539                 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4540                 return i802_set_sta_vlan(priv, addr, name, 0);
4541         } else {
4542                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4543                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4544                                                     name);
4545         }
4546 }
4547
4548
4549 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4550 {
4551         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4552         struct sockaddr_ll lladdr;
4553         unsigned char buf[3000];
4554         int len;
4555         socklen_t fromlen = sizeof(lladdr);
4556
4557         len = recvfrom(sock, buf, sizeof(buf), 0,
4558                        (struct sockaddr *)&lladdr, &fromlen);
4559         if (len < 0) {
4560                 perror("recv");
4561                 return;
4562         }
4563
4564         if (have_ifidx(drv, lladdr.sll_ifindex))
4565                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4566 }
4567
4568
4569 static int i802_get_inact_sec(void *priv, const u8 *addr)
4570 {
4571         struct hostap_sta_driver_data data;
4572         int ret;
4573
4574         data.inactive_msec = (unsigned long) -1;
4575         ret = i802_read_sta_data(priv, &data, addr);
4576         if (ret || data.inactive_msec == (unsigned long) -1)
4577                 return -1;
4578         return data.inactive_msec / 1000;
4579 }
4580
4581
4582 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4583 {
4584 #if 0
4585         /* TODO */
4586 #endif
4587         return 0;
4588 }
4589
4590
4591 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4592                            int reason)
4593 {
4594         struct i802_bss *bss = priv;
4595         struct ieee80211_mgmt mgmt;
4596
4597         memset(&mgmt, 0, sizeof(mgmt));
4598         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4599                                           WLAN_FC_STYPE_DEAUTH);
4600         memcpy(mgmt.da, addr, ETH_ALEN);
4601         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4602         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4603         mgmt.u.deauth.reason_code = host_to_le16(reason);
4604         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4605                                             IEEE80211_HDRLEN +
4606                                             sizeof(mgmt.u.deauth));
4607 }
4608
4609
4610 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4611                              int reason)
4612 {
4613         struct i802_bss *bss = priv;
4614         struct ieee80211_mgmt mgmt;
4615
4616         memset(&mgmt, 0, sizeof(mgmt));
4617         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4618                                           WLAN_FC_STYPE_DISASSOC);
4619         memcpy(mgmt.da, addr, ETH_ALEN);
4620         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4621         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4622         mgmt.u.disassoc.reason_code = host_to_le16(reason);
4623         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4624                                             IEEE80211_HDRLEN +
4625                                             sizeof(mgmt.u.disassoc));
4626 }
4627
4628
4629 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4630                              const char *brname, const char *ifname)
4631 {
4632         int ifindex;
4633         char in_br[IFNAMSIZ];
4634
4635         os_strlcpy(drv->brname, brname, IFNAMSIZ);
4636         ifindex = if_nametoindex(brname);
4637         if (ifindex == 0) {
4638                 /*
4639                  * Bridge was configured, but the bridge device does
4640                  * not exist. Try to add it now.
4641                  */
4642                 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4643                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4644                                    "bridge interface %s: %s",
4645                                    brname, strerror(errno));
4646                         return -1;
4647                 }
4648                 drv->added_bridge = 1;
4649                 add_ifidx(drv, if_nametoindex(brname));
4650         }
4651
4652         if (linux_br_get(in_br, ifname) == 0) {
4653                 if (os_strcmp(in_br, brname) == 0)
4654                         return 0; /* already in the bridge */
4655
4656                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4657                            "bridge %s", ifname, in_br);
4658                 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4659                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
4660                                    "remove interface %s from bridge "
4661                                    "%s: %s",
4662                                    ifname, brname, strerror(errno));
4663                         return -1;
4664                 }
4665         }
4666
4667         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4668                    ifname, brname);
4669         if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4670                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4671                            "into bridge %s: %s",
4672                            ifname, brname, strerror(errno));
4673                 return -1;
4674         }
4675         drv->added_if_into_bridge = 1;
4676
4677         return 0;
4678 }
4679
4680
4681 static void *i802_init(struct hostapd_data *hapd,
4682                        struct wpa_init_params *params)
4683 {
4684         struct wpa_driver_nl80211_data *drv;
4685         struct i802_bss *bss;
4686         size_t i;
4687         char brname[IFNAMSIZ];
4688         int ifindex, br_ifindex;
4689         int br_added = 0;
4690
4691         bss = wpa_driver_nl80211_init(hapd, params->ifname);
4692         if (bss == NULL)
4693                 return NULL;
4694
4695         drv = bss->drv;
4696         if (linux_br_get(brname, params->ifname) == 0) {
4697                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4698                            params->ifname, brname);
4699                 br_ifindex = if_nametoindex(brname);
4700         } else {
4701                 brname[0] = '\0';
4702                 br_ifindex = 0;
4703         }
4704
4705         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4706         drv->if_indices = drv->default_if_indices;
4707         for (i = 0; i < params->num_bridge; i++) {
4708                 if (params->bridge[i]) {
4709                         ifindex = if_nametoindex(params->bridge[i]);
4710                         if (ifindex)
4711                                 add_ifidx(drv, ifindex);
4712                         if (ifindex == br_ifindex)
4713                                 br_added = 1;
4714                 }
4715         }
4716         if (!br_added && br_ifindex &&
4717             (params->num_bridge == 0 || !params->bridge[0]))
4718                 add_ifidx(drv, br_ifindex);
4719
4720         /* start listening for EAPOL on the default AP interface */
4721         add_ifidx(drv, drv->ifindex);
4722
4723         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
4724                 goto failed;
4725
4726         if (params->bssid) {
4727                 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
4728                                        params->bssid))
4729                         goto failed;
4730         }
4731
4732         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
4733                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4734                            "into AP mode", bss->ifname);
4735                 goto failed;
4736         }
4737
4738         if (params->num_bridge && params->bridge[0] &&
4739             i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4740                 goto failed;
4741
4742         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4743                 goto failed;
4744
4745         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4746         if (drv->eapol_sock < 0) {
4747                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4748                 goto failed;
4749         }
4750
4751         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4752         {
4753                 printf("Could not register read socket for eapol\n");
4754                 goto failed;
4755         }
4756
4757         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
4758                 goto failed;
4759
4760         return bss;
4761
4762 failed:
4763         nl80211_remove_monitor_interface(drv);
4764         if (drv->ioctl_sock >= 0)
4765                 close(drv->ioctl_sock);
4766
4767         genl_family_put(drv->nl80211);
4768         nl_cache_free(drv->nl_cache);
4769         nl_handle_destroy(drv->nl_handle);
4770         nl_cb_put(drv->nl_cb);
4771
4772         os_free(drv);
4773         return NULL;
4774 }
4775
4776
4777 static void i802_deinit(void *priv)
4778 {
4779         wpa_driver_nl80211_deinit(priv);
4780 }
4781
4782 #endif /* HOSTAPD */
4783
4784
4785 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4786         enum wpa_driver_if_type type)
4787 {
4788         switch (type) {
4789         case WPA_IF_STATION:
4790                 return NL80211_IFTYPE_STATION;
4791         case WPA_IF_AP_VLAN:
4792                 return NL80211_IFTYPE_AP_VLAN;
4793         case WPA_IF_AP_BSS:
4794                 return NL80211_IFTYPE_AP;
4795         }
4796         return -1;
4797 }
4798
4799
4800 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
4801                                      const char *ifname, const u8 *addr,
4802                                      void *bss_ctx, void **drv_priv,
4803                                      char *force_ifname, u8 *if_addr)
4804 {
4805         struct i802_bss *bss = priv;
4806         struct wpa_driver_nl80211_data *drv = bss->drv;
4807         int ifidx;
4808 #ifdef HOSTAPD
4809         struct i802_bss *new_bss = NULL;
4810
4811         if (type == WPA_IF_AP_BSS) {
4812                 new_bss = os_zalloc(sizeof(*new_bss));
4813                 if (new_bss == NULL)
4814                         return -1;
4815         }
4816 #endif /* HOSTAPD */
4817
4818         if (addr)
4819                 os_memcpy(if_addr, addr, ETH_ALEN);
4820         ifidx = nl80211_create_iface(drv, ifname,
4821                                      wpa_driver_nl80211_if_type(type), addr,
4822                                      0);
4823         if (ifidx < 0) {
4824 #ifdef HOSTAPD
4825                 os_free(new_bss);
4826 #endif /* HOSTAPD */
4827                 return -1;
4828         }
4829
4830         if (!addr &&
4831             linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
4832                 return -1;
4833
4834 #ifdef HOSTAPD
4835         if (type == WPA_IF_AP_BSS) {
4836                 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4837                         nl80211_remove_iface(drv, ifidx);
4838                         os_free(new_bss);
4839                         return -1;
4840                 }
4841                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4842                 new_bss->ifindex = ifidx;
4843                 new_bss->drv = drv;
4844                 new_bss->next = drv->first_bss.next;
4845                 drv->first_bss.next = new_bss;
4846                 if (drv_priv)
4847                         *drv_priv = new_bss;
4848         }
4849 #endif /* HOSTAPD */
4850
4851         return 0;
4852 }
4853
4854
4855 static int wpa_driver_nl80211_if_remove(void *priv,
4856                                         enum wpa_driver_if_type type,
4857                                         const char *ifname)
4858 {
4859         struct i802_bss *bss = priv;
4860         struct wpa_driver_nl80211_data *drv = bss->drv;
4861         int ifindex = if_nametoindex(ifname);
4862
4863         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4864                    __func__, type, ifname, ifindex);
4865         if (ifindex <= 0)
4866                 return -1;
4867         nl80211_remove_iface(drv, ifindex);
4868
4869 #ifdef HOSTAPD
4870         if (type != WPA_IF_AP_BSS)
4871                 return 0;
4872
4873         if (bss != &drv->first_bss) {
4874                 struct i802_bss *tbss = &drv->first_bss;
4875
4876                 while (tbss) {
4877                         if (tbss->next != bss)
4878                                 continue;
4879
4880                         tbss->next = bss->next;
4881                         os_free(bss);
4882                         break;
4883                 }
4884         }
4885 #endif /* HOSTAPD */
4886
4887         return 0;
4888 }
4889
4890
4891 static int cookie_handler(struct nl_msg *msg, void *arg)
4892 {
4893         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4894         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4895         u64 *cookie = arg;
4896         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4897                   genlmsg_attrlen(gnlh, 0), NULL);
4898         if (tb[NL80211_ATTR_COOKIE])
4899                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4900         return NL_SKIP;
4901 }
4902
4903
4904 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
4905                                           const u8 *dst, const u8 *src,
4906                                           const u8 *bssid,
4907                                           const u8 *data, size_t data_len)
4908 {
4909         struct i802_bss *bss = priv;
4910         struct wpa_driver_nl80211_data *drv = bss->drv;
4911         int ret = -1;
4912         struct nl_msg *msg;
4913         u8 *buf;
4914         struct ieee80211_hdr *hdr;
4915         u64 cookie;
4916
4917         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
4918                    drv->ifindex);
4919
4920         buf = os_zalloc(24 + data_len);
4921         if (buf == NULL)
4922                 return ret;
4923         os_memcpy(buf + 24, data, data_len);
4924         hdr = (struct ieee80211_hdr *) buf;
4925         hdr->frame_control =
4926                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
4927         os_memcpy(hdr->addr1, dst, ETH_ALEN);
4928         os_memcpy(hdr->addr2, src, ETH_ALEN);
4929         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
4930
4931         if (drv->nlmode == NL80211_IFTYPE_AP) {
4932                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
4933                 os_free(buf);
4934                 return ret;
4935         }
4936
4937         msg = nlmsg_alloc();
4938         if (!msg) {
4939                 os_free(buf);
4940                 return -1;
4941         }
4942
4943         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4944                     NL80211_CMD_ACTION, 0);
4945
4946         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4947         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4948         NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
4949         os_free(buf);
4950         buf = NULL;
4951
4952         cookie = 0;
4953         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4954         msg = NULL;
4955         if (ret) {
4956                 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
4957                            "(%s)", ret, strerror(-ret));
4958                 goto nla_put_failure;
4959         }
4960         wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
4961                    "cookie 0x%llx", (long long unsigned int) cookie);
4962         drv->send_action_cookie = cookie;
4963         drv->pending_send_action = 1;
4964         ret = 0;
4965
4966 nla_put_failure:
4967         os_free(buf);
4968         nlmsg_free(msg);
4969         return ret;
4970 }
4971
4972
4973 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4974                                                 unsigned int duration)
4975 {
4976         struct i802_bss *bss = priv;
4977         struct wpa_driver_nl80211_data *drv = bss->drv;
4978         struct nl_msg *msg;
4979         int ret;
4980         u64 cookie;
4981
4982         msg = nlmsg_alloc();
4983         if (!msg)
4984                 return -1;
4985
4986         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4987                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4988
4989         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4990         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4991         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4992
4993         cookie = 0;
4994         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4995         if (ret == 0) {
4996                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4997                            "0x%llx for freq=%u MHz duration=%u",
4998                            (long long unsigned int) cookie, freq, duration);
4999                 drv->remain_on_chan_cookie = cookie;
5000                 return 0;
5001         }
5002         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5003                    "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
5004 nla_put_failure:
5005         return -1;
5006 }
5007
5008
5009 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5010 {
5011         struct i802_bss *bss = priv;
5012         struct wpa_driver_nl80211_data *drv = bss->drv;
5013         struct nl_msg *msg;
5014         int ret;
5015
5016         if (!drv->pending_remain_on_chan) {
5017                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5018                            "to cancel");
5019                 return -1;
5020         }
5021
5022         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5023                    "0x%llx",
5024                    (long long unsigned int) drv->remain_on_chan_cookie);
5025
5026         msg = nlmsg_alloc();
5027         if (!msg)
5028                 return -1;
5029
5030         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5031                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5032
5033         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5034         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5035
5036         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5037         if (ret == 0)
5038                 return 0;
5039         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5040                    "%d (%s)", ret, strerror(-ret));
5041 nla_put_failure:
5042         return -1;
5043 }
5044
5045
5046 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5047                                                         void *timeout_ctx)
5048 {
5049         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5050         if (drv->monitor_ifidx < 0)
5051                 return; /* monitor interface already removed */
5052
5053         if (drv->nlmode != NL80211_IFTYPE_STATION)
5054                 return; /* not in station mode anymore */
5055
5056         if (drv->probe_req_report)
5057                 return; /* reporting enabled */
5058
5059         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5060                    "Probe Request reporting needed anymore");
5061         nl80211_remove_monitor_interface(drv);
5062 }
5063
5064
5065 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5066 {
5067         struct i802_bss *bss = priv;
5068         struct wpa_driver_nl80211_data *drv = bss->drv;
5069
5070         if (drv->nlmode != NL80211_IFTYPE_STATION) {
5071                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5072                            "allowed in station mode (iftype=%d)",
5073                            drv->nlmode);
5074                 return -1;
5075         }
5076         drv->probe_req_report = report;
5077
5078         if (report) {
5079                 eloop_cancel_timeout(
5080                         wpa_driver_nl80211_probe_req_report_timeout,
5081                         drv, NULL);
5082                 if (drv->monitor_ifidx < 0 &&
5083                     nl80211_create_monitor_interface(drv))
5084                         return -1;
5085         } else {
5086                 /*
5087                  * It takes a while to remove the monitor interface, so try to
5088                  * avoid doing this if it is needed again shortly. Instead,
5089                  * schedule the interface to be removed later if no need for it
5090                  * is seen.
5091                  */
5092                 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5093                            "to be removed after 10 seconds of no use");
5094                 eloop_register_timeout(
5095                         10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5096                         drv, NULL);
5097         }
5098
5099         return 0;
5100 }
5101
5102
5103 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5104                                      int ifindex, int disabled)
5105 {
5106         struct nl_msg *msg;
5107         struct nlattr *bands, *band;
5108         int ret;
5109
5110         msg = nlmsg_alloc();
5111         if (!msg)
5112                 return -1;
5113
5114         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5115                     NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5116         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5117
5118         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5119         if (!bands)
5120                 goto nla_put_failure;
5121
5122         /*
5123          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5124          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5125          * rates. All 5 GHz rates are left enabled.
5126          */
5127         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5128         if (!band)
5129                 goto nla_put_failure;
5130         NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5131                 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5132         nla_nest_end(msg, band);
5133
5134         nla_nest_end(msg, bands);
5135
5136         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5137         msg = NULL;
5138         if (ret) {
5139                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5140                            "(%s)", ret, strerror(-ret));
5141         }
5142
5143         return ret;
5144
5145 nla_put_failure:
5146         nlmsg_free(msg);
5147         return -1;
5148 }
5149
5150
5151 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5152 {
5153         struct i802_bss *bss = priv;
5154         struct wpa_driver_nl80211_data *drv = bss->drv;
5155         drv->disable_11b_rates = disabled;
5156         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5157 }
5158
5159
5160 static int wpa_driver_nl80211_deinit_ap(void *priv)
5161 {
5162         struct i802_bss *bss = priv;
5163         struct wpa_driver_nl80211_data *drv = bss->drv;
5164         if (drv->nlmode != NL80211_IFTYPE_AP)
5165                 return -1;
5166         wpa_driver_nl80211_del_beacon(drv);
5167         return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5168 }
5169
5170
5171 static void wpa_driver_nl80211_resume(void *priv)
5172 {
5173         struct i802_bss *bss = priv;
5174         struct wpa_driver_nl80211_data *drv = bss->drv;
5175         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5176                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5177                            "resume event");
5178         }
5179 }
5180
5181
5182 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5183                                   const u8 *ies, size_t ies_len)
5184 {
5185         struct i802_bss *bss = priv;
5186         struct wpa_driver_nl80211_data *drv = bss->drv;
5187         int ret;
5188         u8 *data, *pos;
5189         size_t data_len;
5190         u8 own_addr[ETH_ALEN];
5191
5192         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5193                 return -1;
5194
5195         if (action != 1) {
5196                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5197                            "action %d", action);
5198                 return -1;
5199         }
5200
5201         /*
5202          * Action frame payload:
5203          * Category[1] = 6 (Fast BSS Transition)
5204          * Action[1] = 1 (Fast BSS Transition Request)
5205          * STA Address
5206          * Target AP Address
5207          * FT IEs
5208          */
5209
5210         data_len = 2 + 2 * ETH_ALEN + ies_len;
5211         data = os_malloc(data_len);
5212         if (data == NULL)
5213                 return -1;
5214         pos = data;
5215         *pos++ = 0x06; /* FT Action category */
5216         *pos++ = action;
5217         os_memcpy(pos, own_addr, ETH_ALEN);
5218         pos += ETH_ALEN;
5219         os_memcpy(pos, target_ap, ETH_ALEN);
5220         pos += ETH_ALEN;
5221         os_memcpy(pos, ies, ies_len);
5222
5223         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5224                                              own_addr, drv->bssid,
5225                                              data, data_len);
5226         os_free(data);
5227
5228         return ret;
5229 }
5230
5231
5232 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5233 {
5234         struct i802_bss *bss = priv;
5235         struct wpa_driver_nl80211_data *drv = bss->drv;
5236         struct nl_msg *msg, *cqm = NULL;
5237
5238         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5239                    "hysteresis=%d", threshold, hysteresis);
5240
5241         msg = nlmsg_alloc();
5242         if (!msg)
5243                 return -1;
5244
5245         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5246                     0, NL80211_CMD_SET_CQM, 0);
5247
5248         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5249
5250         cqm = nlmsg_alloc();
5251         if (cqm == NULL)
5252                 return -1;
5253
5254         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5255         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5256         nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5257
5258         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5259                 return 0;
5260         msg = NULL;
5261
5262 nla_put_failure:
5263         if (cqm)
5264                 nlmsg_free(cqm);
5265         nlmsg_free(msg);
5266         return -1;
5267 }
5268
5269
5270 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5271                               int encrypt)
5272 {
5273         struct i802_bss *bss = priv;
5274         struct wpa_driver_nl80211_data *drv = bss->drv;
5275         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5276 }
5277
5278
5279 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5280         .name = "nl80211",
5281         .desc = "Linux nl80211/cfg80211",
5282         .get_bssid = wpa_driver_nl80211_get_bssid,
5283         .get_ssid = wpa_driver_nl80211_get_ssid,
5284         .set_key = wpa_driver_nl80211_set_key,
5285         .scan2 = wpa_driver_nl80211_scan,
5286         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5287         .deauthenticate = wpa_driver_nl80211_deauthenticate,
5288         .disassociate = wpa_driver_nl80211_disassociate,
5289         .authenticate = wpa_driver_nl80211_authenticate,
5290         .associate = wpa_driver_nl80211_associate,
5291         .init = wpa_driver_nl80211_init,
5292         .deinit = wpa_driver_nl80211_deinit,
5293         .get_capa = wpa_driver_nl80211_get_capa,
5294         .set_operstate = wpa_driver_nl80211_set_operstate,
5295         .set_supp_port = wpa_driver_nl80211_set_supp_port,
5296         .set_country = wpa_driver_nl80211_set_country,
5297         .set_beacon = wpa_driver_nl80211_set_beacon,
5298         .if_add = wpa_driver_nl80211_if_add,
5299         .if_remove = wpa_driver_nl80211_if_remove,
5300         .send_mlme = wpa_driver_nl80211_send_mlme,
5301         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5302         .sta_add = wpa_driver_nl80211_sta_add,
5303         .sta_remove = wpa_driver_nl80211_sta_remove,
5304         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5305         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5306 #ifdef HOSTAPD
5307         .hapd_init = i802_init,
5308         .hapd_deinit = i802_deinit,
5309         .get_seqnum = i802_get_seqnum,
5310         .flush = i802_flush,
5311         .read_sta_data = i802_read_sta_data,
5312         .sta_deauth = i802_sta_deauth,
5313         .sta_disassoc = i802_sta_disassoc,
5314         .get_inact_sec = i802_get_inact_sec,
5315         .sta_clear_stats = i802_sta_clear_stats,
5316         .set_rts = i802_set_rts,
5317         .set_frag = i802_set_frag,
5318         .set_rate_sets = i802_set_rate_sets,
5319         .set_cts_protect = i802_set_cts_protect,
5320         .set_preamble = i802_set_preamble,
5321         .set_short_slot_time = i802_set_short_slot_time,
5322         .set_tx_queue_params = i802_set_tx_queue_params,
5323         .set_sta_vlan = i802_set_sta_vlan,
5324         .set_wds_sta = i802_set_wds_sta,
5325 #endif /* HOSTAPD */
5326         .set_freq = i802_set_freq,
5327         .send_action = wpa_driver_nl80211_send_action,
5328         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5329         .cancel_remain_on_channel =
5330         wpa_driver_nl80211_cancel_remain_on_channel,
5331         .probe_req_report = wpa_driver_nl80211_probe_req_report,
5332         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5333         .deinit_ap = wpa_driver_nl80211_deinit_ap,
5334         .resume = wpa_driver_nl80211_resume,
5335         .send_ft_action = nl80211_send_ft_action,
5336         .signal_monitor = nl80211_signal_monitor,
5337         .send_frame = nl80211_send_frame,
5338 };