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