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 static void nl80211_remove_monitor_interface(
 137         struct wpa_driver_nl80211_data *drv);
 138
 139 #ifdef HOSTAPD
 140 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 141 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 142 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 143 static int wpa_driver_nl80211_if_remove(void *priv,
 144                                         enum wpa_driver_if_type type,
 145                                         const char *ifname);
 146 #endif /* HOSTAPD */
 147
 148 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
 149                                                         void *timeout_ctx);
 150 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 151                                      int ifindex, int disabled);
 152
 153
 154 /* nl80211 code */
 155 static int ack_handler(struct nl_msg *msg, void *arg)
 156 {
 157         int *err = arg;
 158         *err = 0;
 159         return NL_STOP;
 160 }
 161
 162 static int finish_handler(struct nl_msg *msg, void *arg)
 163 {
 164         int *ret = arg;
 165         *ret = 0;
 166         return NL_SKIP;
 167 }
 168
 169 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 170                          void *arg)
 171 {
 172         int *ret = arg;
 173         *ret = err->error;
 174         return NL_SKIP;
 175 }
 176
 177
 178 static int no_seq_check(struct nl_msg *msg, void *arg)
 179 {
 180         return NL_OK;
 181 }
 182
 183
 184 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
 185                          struct nl_handle *nl_handle, struct nl_msg *msg,
 186                          int (*valid_handler)(struct nl_msg *, void *),
 187                          void *valid_data)
 188 {
 189         struct nl_cb *cb;
 190         int err = -ENOMEM;
 191
 192         cb = nl_cb_clone(drv->nl_cb);
 193         if (!cb)
 194                 goto out;
 195
 196         err = nl_send_auto_complete(nl_handle, msg);
 197         if (err < 0)
 198                 goto out;
 199
 200         err = 1;
 201
 202         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 203         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 204         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 205
 206         if (valid_handler)
 207                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 208                           valid_handler, valid_data);
 209
 210         while (err > 0)
 211                 nl_recvmsgs(nl_handle, cb);
 212  out:
 213         nl_cb_put(cb);
 214         nlmsg_free(msg);
 215         return err;
 216 }
 217
 218
 219 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 220                               struct nl_msg *msg,
 221                               int (*valid_handler)(struct nl_msg *, void *),
 222                               void *valid_data)
 223 {
 224         return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
 225                              valid_data);
 226 }
 227
 228
 229 struct family_data {
 230         const char *group;
 231         int id;
 232 };
 233
 234
 235 static int family_handler(struct nl_msg *msg, void *arg)
 236 {
 237         struct family_data *res = arg;
 238         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 239         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 240         struct nlattr *mcgrp;
 241         int i;
 242
 243         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 244                   genlmsg_attrlen(gnlh, 0), NULL);
 245         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 246                 return NL_SKIP;
 247
 248         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 249                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 250                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 251                           nla_len(mcgrp), NULL);
 252                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 253                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 254                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 255                                res->group,
 256                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 257                         continue;
 258                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 259                 break;
 260         };
 261
 262         return NL_SKIP;
 263 }
 264
 265
 266 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 267                                const char *family, const char *group)
 268 {
 269         struct nl_msg *msg;
 270         int ret = -1;
 271         struct family_data res = { group, -ENOENT };
 272
 273         msg = nlmsg_alloc();
 274         if (!msg)
 275                 return -ENOMEM;
 276         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 277                     0, 0, CTRL_CMD_GETFAMILY, 0);
 278         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 279
 280         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 281         msg = NULL;
 282         if (ret == 0)
 283                 ret = res.id;
 284
 285 nla_put_failure:
 286         nlmsg_free(msg);
 287         return ret;
 288 }
 289
 290
 291 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 292 {
 293         struct i802_bss *bss = priv;
 294         struct wpa_driver_nl80211_data *drv = bss->drv;
 295         if (!drv->associated)
 296                 return -1;
 297         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 298         return 0;
 299 }
 300
 301
 302 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 303 {
 304         struct i802_bss *bss = priv;
 305         struct wpa_driver_nl80211_data *drv = bss->drv;
 306         if (!drv->associated)
 307                 return -1;
 308         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 309         return drv->ssid_len;
 310 }
 311
 312
 313 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 314                                           char *buf, size_t len, int del)
 315 {
 316         union wpa_event_data event;
 317
 318         os_memset(&event, 0, sizeof(event));
 319         if (len > sizeof(event.interface_status.ifname))
 320                 len = sizeof(event.interface_status.ifname) - 1;
 321         os_memcpy(event.interface_status.ifname, buf, len);
 322         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 323                 EVENT_INTERFACE_ADDED;
 324
 325         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 326                    del ? "DEL" : "NEW",
 327                    event.interface_status.ifname,
 328                    del ? "removed" : "added");
 329
 330         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 331                 if (del)
 332                         drv->if_removed = 1;
 333                 else
 334                         drv->if_removed = 0;
 335         }
 336
 337         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 338 }
 339
 340
 341 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 342                                          u8 *buf, size_t len)
 343 {
 344         int attrlen, rta_len;
 345         struct rtattr *attr;
 346
 347         attrlen = len;
 348         attr = (struct rtattr *) buf;
 349
 350         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 351         while (RTA_OK(attr, attrlen)) {
 352                 if (attr->rta_type == IFLA_IFNAME) {
 353                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 354                             == 0)
 355                                 return 1;
 356                         else
 357                                 break;
 358                 }
 359                 attr = RTA_NEXT(attr, attrlen);
 360         }
 361
 362         return 0;
 363 }
 364
 365
 366 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 367                                           int ifindex, u8 *buf, size_t len)
 368 {
 369         if (drv->ifindex == ifindex)
 370                 return 1;
 371
 372         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 373                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 374                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 375                            "interface");
 376                 wpa_driver_nl80211_finish_drv_init(drv);
 377                 return 1;
 378         }
 379
 380         return 0;
 381 }
 382
 383
 384 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 385                                                  struct ifinfomsg *ifi,
 386                                                  u8 *buf, size_t len)
 387 {
 388         struct wpa_driver_nl80211_data *drv = ctx;
 389         int attrlen, rta_len;
 390         struct rtattr *attr;
 391
 392         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
 393                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 394                            ifi->ifi_index);
 395                 return;
 396         }
 397
 398         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 399                    "(%s%s%s%s)",
 400                    drv->operstate, ifi->ifi_flags,
 401                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 402                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 403                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 404                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 405         /*
 406          * Some drivers send the association event before the operup event--in
 407          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 408          * fails. This will hit us when wpa_supplicant does not need to do
 409          * IEEE 802.1X authentication
 410          */
 411         if (drv->operstate == 1 &&
 412             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 413             !(ifi->ifi_flags & IFF_RUNNING))
 414                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 415                                        -1, IF_OPER_UP);
 416
 417         attrlen = len;
 418         attr = (struct rtattr *) buf;
 419         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 420         while (RTA_OK(attr, attrlen)) {
 421                 if (attr->rta_type == IFLA_IFNAME) {
 422                         wpa_driver_nl80211_event_link(
 423                                 drv,
 424                                 ((char *) attr) + rta_len,
 425                                 attr->rta_len - rta_len, 0);
 426                 }
 427                 attr = RTA_NEXT(attr, attrlen);
 428         }
 429 }
 430
 431
 432 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 433                                                  struct ifinfomsg *ifi,
 434                                                  u8 *buf, size_t len)
 435 {
 436         struct wpa_driver_nl80211_data *drv = ctx;
 437         int attrlen, rta_len;
 438         struct rtattr *attr;
 439
 440         attrlen = len;
 441         attr = (struct rtattr *) buf;
 442
 443         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 444         while (RTA_OK(attr, attrlen)) {
 445                 if (attr->rta_type == IFLA_IFNAME) {
 446                         wpa_driver_nl80211_event_link(
 447                                 drv,
 448                                 ((char *) attr) + rta_len,
 449                                 attr->rta_len - rta_len, 1);
 450                 }
 451                 attr = RTA_NEXT(attr, attrlen);
 452         }
 453 }
 454
 455
 456 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 457                             const u8 *frame, size_t len)
 458 {
 459         const struct ieee80211_mgmt *mgmt;
 460         union wpa_event_data event;
 461
 462         mgmt = (const struct ieee80211_mgmt *) frame;
 463         if (len < 24 + sizeof(mgmt->u.auth)) {
 464                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 465                            "frame");
 466                 return;
 467         }
 468
 469         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 470         os_memset(&event, 0, sizeof(event));
 471         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 472         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 473         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 474         if (len > 24 + sizeof(mgmt->u.auth)) {
 475                 event.auth.ies = mgmt->u.auth.variable;
 476                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 477         }
 478
 479         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 480 }
 481
 482
 483 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 484                             const u8 *frame, size_t len)
 485 {
 486         const struct ieee80211_mgmt *mgmt;
 487         union wpa_event_data event;
 488         u16 status;
 489
 490         mgmt = (const struct ieee80211_mgmt *) frame;
 491         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 492                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 493                            "frame");
 494                 return;
 495         }
 496
 497         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 498         if (status != WLAN_STATUS_SUCCESS) {
 499                 os_memset(&event, 0, sizeof(event));
 500                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 501                         event.assoc_reject.resp_ies =
 502                                 (u8 *) mgmt->u.assoc_resp.variable;
 503                         event.assoc_reject.resp_ies_len =
 504                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 505                 }
 506                 event.assoc_reject.status_code = status;
 507
 508                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 509                 return;
 510         }
 511
 512         drv->associated = 1;
 513         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 514
 515         os_memset(&event, 0, sizeof(event));
 516         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 517                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 518                 event.assoc_info.resp_ies_len =
 519                         len - 24 - sizeof(mgmt->u.assoc_resp);
 520         }
 521
 522         event.assoc_info.freq = drv->assoc_freq;
 523
 524         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 525 }
 526
 527
 528 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 529                                enum nl80211_commands cmd, struct nlattr *status,
 530                                struct nlattr *addr, struct nlattr *req_ie,
 531                                struct nlattr *resp_ie)
 532 {
 533         union wpa_event_data event;
 534
 535         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 536                 /*
 537                  * Avoid reporting two association events that would confuse
 538                  * the core code.
 539                  */
 540                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 541                            "when using userspace SME", cmd);
 542                 return;
 543         }
 544
 545         os_memset(&event, 0, sizeof(event));
 546         if (cmd == NL80211_CMD_CONNECT &&
 547             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 548                 if (resp_ie) {
 549                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 550                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 551                 }
 552                 event.assoc_reject.status_code = nla_get_u16(status);
 553                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 554                 return;
 555         }
 556
 557         drv->associated = 1;
 558         if (addr)
 559                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 560
 561         if (req_ie) {
 562                 event.assoc_info.req_ies = nla_data(req_ie);
 563                 event.assoc_info.req_ies_len = nla_len(req_ie);
 564         }
 565         if (resp_ie) {
 566                 event.assoc_info.resp_ies = nla_data(resp_ie);
 567                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 568         }
 569
 570         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 571 }
 572
 573
 574 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 575                                enum nl80211_commands cmd, struct nlattr *addr)
 576 {
 577         union wpa_event_data event;
 578         enum wpa_event_type ev;
 579
 580         if (nla_len(addr) != ETH_ALEN)
 581                 return;
 582
 583         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 584                    cmd, MAC2STR((u8 *) nla_data(addr)));
 585
 586         if (cmd == NL80211_CMD_AUTHENTICATE)
 587                 ev = EVENT_AUTH_TIMED_OUT;
 588         else if (cmd == NL80211_CMD_ASSOCIATE)
 589                 ev = EVENT_ASSOC_TIMED_OUT;
 590         else
 591                 return;
 592
 593         os_memset(&event, 0, sizeof(event));
 594         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 595         wpa_supplicant_event(drv->ctx, ev, &event);
 596 }
 597
 598
 599 static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
 600                               struct nlattr *freq, const u8 *frame, size_t len)
 601 {
 602         const struct ieee80211_mgmt *mgmt;
 603         union wpa_event_data event;
 604         u16 fc, stype;
 605
 606         mgmt = (const struct ieee80211_mgmt *) frame;
 607         if (len < 24) {
 608                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
 609                 return;
 610         }
 611
 612         fc = le_to_host16(mgmt->frame_control);
 613         stype = WLAN_FC_GET_STYPE(fc);
 614
 615         os_memset(&event, 0, sizeof(event));
 616         event.rx_action.da = mgmt->da;
 617         event.rx_action.sa = mgmt->sa;
 618         event.rx_action.bssid = mgmt->bssid;
 619         event.rx_action.category = mgmt->u.action.category;
 620         event.rx_action.data = &mgmt->u.action.category + 1;
 621         event.rx_action.len = frame + len - event.rx_action.data;
 622         if (freq)
 623                 event.rx_action.freq = nla_get_u32(freq);
 624         wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
 625 }
 626
 627
 628 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
 629                                         struct nlattr *cookie, const u8 *frame,
 630                                         size_t len, struct nlattr *ack)
 631 {
 632         union wpa_event_data event;
 633         const struct ieee80211_hdr *hdr;
 634         u16 fc;
 635         u64 cookie_val;
 636
 637         if (!cookie)
 638                 return;
 639
 640         cookie_val = nla_get_u64(cookie);
 641         wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
 642                    (long long unsigned int) cookie_val,
 643                    cookie_val == drv->send_action_cookie ?
 644                    " (match)" : " (unknown)");
 645         if (cookie_val != drv->send_action_cookie)
 646                 return;
 647
 648         hdr = (const struct ieee80211_hdr *) frame;
 649         fc = le_to_host16(hdr->frame_control);
 650
 651         os_memset(&event, 0, sizeof(event));
 652         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 653         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 654         event.tx_status.dst = hdr->addr1;
 655         event.tx_status.data = frame;
 656         event.tx_status.data_len = len;
 657         event.tx_status.ack = ack != NULL;
 658         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
 659 }
 660
 661
 662 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 663                        enum nl80211_commands cmd, struct nlattr *frame,
 664                        struct nlattr *addr, struct nlattr *timed_out,
 665                        struct nlattr *freq, struct nlattr *ack,
 666                        struct nlattr *cookie)
 667 {
 668         if (timed_out && addr) {
 669                 mlme_timeout_event(drv, cmd, addr);
 670                 return;
 671         }
 672
 673         if (frame == NULL) {
 674                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 675                            "data", cmd);
 676                 return;
 677         }
 678
 679         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 680         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 681                     nla_data(frame), nla_len(frame));
 682
 683         switch (cmd) {
 684         case NL80211_CMD_AUTHENTICATE:
 685                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 686                 break;
 687         case NL80211_CMD_ASSOCIATE:
 688                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 689                 break;
 690         case NL80211_CMD_DEAUTHENTICATE:
 691                 drv->associated = 0;
 692                 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
 693                 break;
 694         case NL80211_CMD_DISASSOCIATE:
 695                 drv->associated = 0;
 696                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 697                 break;
 698         case NL80211_CMD_ACTION:
 699                 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
 700                 break;
 701         case NL80211_CMD_ACTION_TX_STATUS:
 702                 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
 703                                             nla_len(frame), ack);
 704                 break;
 705         default:
 706                 break;
 707         }
 708 }
 709
 710
 711 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 712                                            struct nlattr *tb[])
 713 {
 714         union wpa_event_data data;
 715
 716         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 717         os_memset(&data, 0, sizeof(data));
 718         if (tb[NL80211_ATTR_MAC]) {
 719                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 720                             nla_data(tb[NL80211_ATTR_MAC]),
 721                             nla_len(tb[NL80211_ATTR_MAC]));
 722                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 723         }
 724         if (tb[NL80211_ATTR_KEY_SEQ]) {
 725                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 726                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 727                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 728         }
 729         if (tb[NL80211_ATTR_KEY_TYPE]) {
 730                 enum nl80211_key_type key_type =
 731                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 732                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 733                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 734                         data.michael_mic_failure.unicast = 1;
 735         } else
 736                 data.michael_mic_failure.unicast = 1;
 737
 738         if (tb[NL80211_ATTR_KEY_IDX]) {
 739                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 740                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 741         }
 742
 743         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 744 }
 745
 746
 747 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 748                                  struct nlattr *tb[])
 749 {
 750         if (tb[NL80211_ATTR_MAC] == NULL) {
 751                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 752                            "event");
 753                 return;
 754         }
 755         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 756         drv->associated = 1;
 757         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 758                    MAC2STR(drv->bssid));
 759
 760         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 761 }
 762
 763
 764 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 765                                          int cancel_event, struct nlattr *tb[])
 766 {
 767         unsigned int freq, chan_type, duration;
 768         union wpa_event_data data;
 769         u64 cookie;
 770
 771         if (tb[NL80211_ATTR_WIPHY_FREQ])
 772                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 773         else
 774                 freq = 0;
 775
 776         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 777                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 778         else
 779                 chan_type = 0;
 780
 781         if (tb[NL80211_ATTR_DURATION])
 782                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 783         else
 784                 duration = 0;
 785
 786         if (tb[NL80211_ATTR_COOKIE])
 787                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 788         else
 789                 cookie = 0;
 790
 791         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 792                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 793                    cancel_event, freq, chan_type, duration,
 794                    (long long unsigned int) cookie,
 795                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 796
 797         if (cookie != drv->remain_on_chan_cookie)
 798                 return; /* not for us */
 799
 800         drv->pending_remain_on_chan = !cancel_event;
 801
 802         os_memset(&data, 0, sizeof(data));
 803         data.remain_on_channel.freq = freq;
 804         data.remain_on_channel.duration = duration;
 805         wpa_supplicant_event(drv->ctx, cancel_event ?
 806                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 807                              EVENT_REMAIN_ON_CHANNEL, &data);
 808 }
 809
 810
 811 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 812                             struct nlattr *tb[])
 813 {
 814         union wpa_event_data event;
 815         struct nlattr *nl;
 816         int rem;
 817         struct scan_info *info;
 818 #define MAX_REPORT_FREQS 50
 819         int freqs[MAX_REPORT_FREQS];
 820         int num_freqs = 0;
 821
 822         os_memset(&event, 0, sizeof(event));
 823         info = &event.scan_info;
 824         info->aborted = aborted;
 825
 826         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 827                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 828                         struct wpa_driver_scan_ssid *s =
 829                                 &info->ssids[info->num_ssids];
 830                         s->ssid = nla_data(nl);
 831                         s->ssid_len = nla_len(nl);
 832                         info->num_ssids++;
 833                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 834                                 break;
 835                 }
 836         }
 837         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
 838                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
 839                 {
 840                         freqs[num_freqs] = nla_get_u32(nl);
 841                         num_freqs++;
 842                         if (num_freqs == MAX_REPORT_FREQS - 1)
 843                                 break;
 844                 }
 845                 info->freqs = freqs;
 846                 info->num_freqs = num_freqs;
 847         }
 848         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
 849 }
 850
 851
 852 static int process_event(struct nl_msg *msg, void *arg)
 853 {
 854         struct wpa_driver_nl80211_data *drv = arg;
 855         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 856         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 857
 858         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 859                   genlmsg_attrlen(gnlh, 0), NULL);
 860
 861         if (tb[NL80211_ATTR_IFINDEX]) {
 862                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 863                 if (ifindex != drv->ifindex) {
 864                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
 865                                    " for foreign interface (ifindex %d)",
 866                                    gnlh->cmd, ifindex);
 867                         return NL_SKIP;
 868                 }
 869         }
 870
 871         if (drv->ap_scan_as_station &&
 872             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
 873              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
 874                 wpa_driver_nl80211_set_mode(&drv->first_bss,
 875                                             IEEE80211_MODE_AP);
 876                 drv->ap_scan_as_station = 0;
 877         }
 878
 879         switch (gnlh->cmd) {
 880         case NL80211_CMD_TRIGGER_SCAN:
 881                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
 882                 break;
 883         case NL80211_CMD_NEW_SCAN_RESULTS:
 884                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
 885                 drv->scan_complete_events = 1;
 886                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 887                                      drv->ctx);
 888                 send_scan_event(drv, 0, tb);
 889                 break;
 890         case NL80211_CMD_SCAN_ABORTED:
 891                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
 892                 /*
 893                  * Need to indicate that scan results are available in order
 894                  * not to make wpa_supplicant stop its scanning.
 895                  */
 896                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 897                                      drv->ctx);
 898                 send_scan_event(drv, 1, tb);
 899                 break;
 900         case NL80211_CMD_AUTHENTICATE:
 901         case NL80211_CMD_ASSOCIATE:
 902         case NL80211_CMD_DEAUTHENTICATE:
 903         case NL80211_CMD_DISASSOCIATE:
 904         case NL80211_CMD_ACTION:
 905         case NL80211_CMD_ACTION_TX_STATUS:
 906                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
 907                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
 908                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
 909                            tb[NL80211_ATTR_COOKIE]);
 910                 break;
 911         case NL80211_CMD_CONNECT:
 912         case NL80211_CMD_ROAM:
 913                 mlme_event_connect(drv, gnlh->cmd,
 914                                    tb[NL80211_ATTR_STATUS_CODE],
 915                                    tb[NL80211_ATTR_MAC],
 916                                    tb[NL80211_ATTR_REQ_IE],
 917                                    tb[NL80211_ATTR_RESP_IE]);
 918                 break;
 919         case NL80211_CMD_DISCONNECT:
 920                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 921                         /*
 922                          * Avoid reporting two disassociation events that could
 923                          * confuse the core code.
 924                          */
 925                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
 926                                    "event when using userspace SME");
 927                         break;
 928                 }
 929                 drv->associated = 0;
 930                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 931                 break;
 932         case NL80211_CMD_MICHAEL_MIC_FAILURE:
 933                 mlme_event_michael_mic_failure(drv, tb);
 934                 break;
 935         case NL80211_CMD_JOIN_IBSS:
 936                 mlme_event_join_ibss(drv, tb);
 937                 break;
 938         case NL80211_CMD_REMAIN_ON_CHANNEL:
 939                 mlme_event_remain_on_channel(drv, 0, tb);
 940                 break;
 941         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
 942                 mlme_event_remain_on_channel(drv, 1, tb);
 943                 break;
 944         default:
 945                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
 946                            "(cmd=%d)", gnlh->cmd);
 947                 break;
 948         }
 949
 950         return NL_SKIP;
 951 }
 952
 953
 954 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
 955                                              void *sock_ctx)
 956 {
 957         struct nl_cb *cb;
 958         struct wpa_driver_nl80211_data *drv = eloop_ctx;
 959
 960         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
 961
 962         cb = nl_cb_clone(drv->nl_cb);
 963         if (!cb)
 964                 return;
 965         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 966         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
 967         nl_recvmsgs(drv->nl_handle_event, cb);
 968         nl_cb_put(cb);
 969 }
 970
 971
 972 /**
 973  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
 974  * @priv: driver_nl80211 private data
 975  * @alpha2_arg: country to which to switch to
 976  * Returns: 0 on success, -1 on failure
 977  *
 978  * This asks nl80211 to set the regulatory domain for given
 979  * country ISO / IEC alpha2.
 980  */
 981 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
 982 {
 983         struct i802_bss *bss = priv;
 984         struct wpa_driver_nl80211_data *drv = bss->drv;
 985         char alpha2[3];
 986         struct nl_msg *msg;
 987
 988         msg = nlmsg_alloc();
 989         if (!msg)
 990                 return -ENOMEM;
 991
 992         alpha2[0] = alpha2_arg[0];
 993         alpha2[1] = alpha2_arg[1];
 994         alpha2[2] = '\0';
 995
 996         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 997                     0, NL80211_CMD_REQ_SET_REG, 0);
 998
 999         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1000         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1001                 return -EINVAL;
1002         return 0;
1003 nla_put_failure:
1004         return -EINVAL;
1005 }
1006
1007
1008 #ifndef HOSTAPD
1009 struct wiphy_info_data {
1010         int max_scan_ssids;
1011         int ap_supported;
1012         int auth_supported;
1013         int connect_supported;
1014 };
1015
1016
1017 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1018 {
1019         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1020         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1021         struct wiphy_info_data *info = arg;
1022
1023         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1024                   genlmsg_attrlen(gnlh, 0), NULL);
1025
1026         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1027                 info->max_scan_ssids =
1028                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1029
1030         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1031                 struct nlattr *nl_mode;
1032                 int i;
1033                 nla_for_each_nested(nl_mode,
1034                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1035                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1036                                 info->ap_supported = 1;
1037                                 break;
1038                         }
1039                 }
1040         }
1041
1042         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1043                 struct nlattr *nl_cmd;
1044                 int i;
1045
1046                 nla_for_each_nested(nl_cmd,
1047                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1048                         u32 cmd = nla_get_u32(nl_cmd);
1049                         if (cmd == NL80211_CMD_AUTHENTICATE)
1050                                 info->auth_supported = 1;
1051                         else if (cmd == NL80211_CMD_CONNECT)
1052                                 info->connect_supported = 1;
1053                 }
1054         }
1055
1056         return NL_SKIP;
1057 }
1058
1059
1060 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1061                                        struct wiphy_info_data *info)
1062 {
1063         struct nl_msg *msg;
1064
1065         os_memset(info, 0, sizeof(*info));
1066         msg = nlmsg_alloc();
1067         if (!msg)
1068                 return -1;
1069
1070         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1071                     0, NL80211_CMD_GET_WIPHY, 0);
1072
1073         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1074
1075         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1076                 return 0;
1077         msg = NULL;
1078 nla_put_failure:
1079         nlmsg_free(msg);
1080         return -1;
1081 }
1082
1083
1084 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1085 {
1086         struct wiphy_info_data info;
1087         if (wpa_driver_nl80211_get_info(drv, &info))
1088                 return -1;
1089         drv->has_capability = 1;
1090         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1091         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1092                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1093                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1094                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1095         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1096                 WPA_DRIVER_CAPA_ENC_WEP104 |
1097                 WPA_DRIVER_CAPA_ENC_TKIP |
1098                 WPA_DRIVER_CAPA_ENC_CCMP;
1099         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1100                 WPA_DRIVER_AUTH_SHARED |
1101                 WPA_DRIVER_AUTH_LEAP;
1102
1103         drv->capa.max_scan_ssids = info.max_scan_ssids;
1104         if (info.ap_supported)
1105                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1106
1107         if (info.auth_supported)
1108                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1109         else if (!info.connect_supported) {
1110                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1111                            "authentication/association or connect commands");
1112                 return -1;
1113         }
1114
1115         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1116
1117         return 0;
1118 }
1119 #endif /* HOSTAPD */
1120
1121
1122 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1123                                       void *ctx)
1124 {
1125         int ret;
1126
1127         /* Initialize generic netlink and nl80211 */
1128
1129         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1130         if (drv->nl_cb == NULL) {
1131                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1132                            "callbacks");
1133                 goto err1;
1134         }
1135
1136         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1137         if (drv->nl_handle == NULL) {
1138                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1139                            "callbacks");
1140                 goto err2;
1141         }
1142
1143         drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1144         if (drv->nl_handle_event == NULL) {
1145                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1146                            "callbacks (event)");
1147                 goto err2b;
1148         }
1149
1150         if (genl_connect(drv->nl_handle)) {
1151                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1152                            "netlink");
1153                 goto err3;
1154         }
1155
1156         if (genl_connect(drv->nl_handle_event)) {
1157                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1158                            "netlink (event)");
1159                 goto err3;
1160         }
1161
1162 #ifdef CONFIG_LIBNL20
1163         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1164                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1165                            "netlink cache");
1166                 goto err3;
1167         }
1168         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1169             0) {
1170                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1171                            "netlink cache (event)");
1172                 goto err3b;
1173         }
1174 #else /* CONFIG_LIBNL20 */
1175         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1176         if (drv->nl_cache == NULL) {
1177                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1178                            "netlink cache");
1179                 goto err3;
1180         }
1181         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1182         if (drv->nl_cache_event == NULL) {
1183                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1184                            "netlink cache (event)");
1185                 goto err3b;
1186         }
1187 #endif /* CONFIG_LIBNL20 */
1188
1189         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1190         if (drv->nl80211 == NULL) {
1191                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1192                            "found");
1193                 goto err4;
1194         }
1195
1196         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1197         if (ret >= 0)
1198                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1199         if (ret < 0) {
1200                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1201                            "membership for scan events: %d (%s)",
1202                            ret, strerror(-ret));
1203                 goto err4;
1204         }
1205
1206         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1207         if (ret >= 0)
1208                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1209         if (ret < 0) {
1210                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1211                            "membership for mlme events: %d (%s)",
1212                            ret, strerror(-ret));
1213                 goto err4;
1214         }
1215
1216         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1217                                  wpa_driver_nl80211_event_receive, drv, ctx);
1218
1219         return 0;
1220
1221 err4:
1222         nl_cache_free(drv->nl_cache_event);
1223 err3b:
1224         nl_cache_free(drv->nl_cache);
1225 err3:
1226         nl_handle_destroy(drv->nl_handle_event);
1227 err2b:
1228         nl_handle_destroy(drv->nl_handle);
1229 err2:
1230         nl_cb_put(drv->nl_cb);
1231 err1:
1232         return -1;
1233 }
1234
1235
1236 /**
1237  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1238  * @ctx: context to be used when calling wpa_supplicant functions,
1239  * e.g., wpa_supplicant_event()
1240  * @ifname: interface name, e.g., wlan0
1241  * Returns: Pointer to private data, %NULL on failure
1242  */
1243 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1244 {
1245         struct wpa_driver_nl80211_data *drv;
1246         struct netlink_config *cfg;
1247         struct i802_bss *bss;
1248
1249         drv = os_zalloc(sizeof(*drv));
1250         if (drv == NULL)
1251                 return NULL;
1252         drv->ctx = ctx;
1253         bss = &drv->first_bss;
1254         bss->drv = drv;
1255         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1256         drv->monitor_ifidx = -1;
1257         drv->monitor_sock = -1;
1258         drv->ioctl_sock = -1;
1259
1260         if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1261                 os_free(drv);
1262                 return NULL;
1263         }
1264
1265         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1266         if (drv->ioctl_sock < 0) {
1267                 perror("socket(PF_INET,SOCK_DGRAM)");
1268                 goto failed;
1269         }
1270
1271         cfg = os_zalloc(sizeof(*cfg));
1272         if (cfg == NULL)
1273                 goto failed;
1274         cfg->ctx = drv;
1275         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1276         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1277         drv->netlink = netlink_init(cfg);
1278         if (drv->netlink == NULL) {
1279                 os_free(cfg);
1280                 goto failed;
1281         }
1282         if (wpa_driver_nl80211_finish_drv_init(drv))
1283                 goto failed;
1284
1285         return bss;
1286
1287 failed:
1288         netlink_deinit(drv->netlink);
1289         if (drv->ioctl_sock >= 0)
1290                 close(drv->ioctl_sock);
1291
1292         genl_family_put(drv->nl80211);
1293         nl_cache_free(drv->nl_cache);
1294         nl_handle_destroy(drv->nl_handle);
1295         nl_cb_put(drv->nl_cb);
1296         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1297
1298         os_free(drv);
1299         return NULL;
1300 }
1301
1302
1303 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1304                                          const u8 *match, size_t match_len)
1305 {
1306         struct nl_msg *msg;
1307         int ret = -1;
1308
1309         msg = nlmsg_alloc();
1310         if (!msg)
1311                 return -1;
1312
1313         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1314                     NL80211_CMD_REGISTER_ACTION, 0);
1315
1316         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1317         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1318
1319         ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1320         msg = NULL;
1321         if (ret) {
1322                 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1323                            "failed: ret=%d (%s)", ret, strerror(-ret));
1324                 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1325                             match, match_len);
1326                 goto nla_put_failure;
1327         }
1328         ret = 0;
1329 nla_put_failure:
1330         nlmsg_free(msg);
1331         return ret;
1332 }
1333
1334
1335 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1336 {
1337         if (0) {
1338                 /* Public Action frames */
1339                 return nl80211_register_action_frame(drv, (u8 *) "\x04", 1);
1340         }
1341
1342         /* FT Action frames */
1343         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1344                 return -1;
1345         else
1346                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1347                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1348
1349         return 0;
1350 }
1351
1352
1353 static int
1354 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1355 {
1356         struct i802_bss *bss = &drv->first_bss;
1357
1358         drv->ifindex = if_nametoindex(bss->ifname);
1359         drv->first_bss.ifindex = drv->ifindex;
1360
1361 #ifndef HOSTAPD
1362         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1363                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1364                            "use managed mode");
1365         }
1366
1367         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1368                 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
1369                            bss->ifname);
1370                 return -1;
1371         }
1372
1373         if (wpa_driver_nl80211_capa(drv))
1374                 return -1;
1375
1376         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1377                                1, IF_OPER_DORMANT);
1378 #endif /* HOSTAPD */
1379
1380         if (nl80211_register_action_frames(drv) < 0) {
1381                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1382                            "frame processing - ignore for now");
1383                 /*
1384                  * Older kernel versions did not support this, so ignore the
1385                  * error for now. Some functionality may not be available
1386                  * because of this.
1387                  */
1388         }
1389
1390         return 0;
1391 }
1392
1393
1394 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1395 {
1396         struct nl_msg *msg;
1397
1398         msg = nlmsg_alloc();
1399         if (!msg)
1400                 return -ENOMEM;
1401
1402         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1403                     0, NL80211_CMD_DEL_BEACON, 0);
1404         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1405
1406         return send_and_recv_msgs(drv, msg, NULL, NULL);
1407  nla_put_failure:
1408         return -ENOBUFS;
1409 }
1410
1411
1412 /**
1413  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1414  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1415  *
1416  * Shut down driver interface and processing of driver events. Free
1417  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1418  */
1419 static void wpa_driver_nl80211_deinit(void *priv)
1420 {
1421         struct i802_bss *bss = priv;
1422         struct wpa_driver_nl80211_data *drv = bss->drv;
1423
1424         if (drv->added_if_into_bridge) {
1425                 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1426                     < 0)
1427                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1428                                    "interface %s from bridge %s: %s",
1429                                    bss->ifname, drv->brname, strerror(errno));
1430         }
1431         if (drv->added_bridge) {
1432                 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1433                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1434                                    "bridge %s: %s",
1435                                    drv->brname, strerror(errno));
1436         }
1437
1438         nl80211_remove_monitor_interface(drv);
1439
1440         if (drv->nlmode == NL80211_IFTYPE_AP)
1441                 wpa_driver_nl80211_del_beacon(drv);
1442
1443 #ifdef HOSTAPD
1444         if (drv->last_freq_ht) {
1445                 /* Clear HT flags from the driver */
1446                 struct hostapd_freq_params freq;
1447                 os_memset(&freq, 0, sizeof(freq));
1448                 freq.freq = drv->last_freq;
1449                 i802_set_freq(priv, &freq);
1450         }
1451
1452         if (drv->eapol_sock >= 0) {
1453                 eloop_unregister_read_sock(drv->eapol_sock);
1454                 close(drv->eapol_sock);
1455         }
1456
1457         if (drv->if_indices != drv->default_if_indices)
1458                 os_free(drv->if_indices);
1459 #endif /* HOSTAPD */
1460
1461         if (drv->disable_11b_rates)
1462                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1463
1464         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1465         netlink_deinit(drv->netlink);
1466
1467         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1468
1469         (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1470         wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1471
1472         if (drv->ioctl_sock >= 0)
1473                 close(drv->ioctl_sock);
1474
1475         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1476         genl_family_put(drv->nl80211);
1477         nl_cache_free(drv->nl_cache);
1478         nl_cache_free(drv->nl_cache_event);
1479         nl_handle_destroy(drv->nl_handle);
1480         nl_handle_destroy(drv->nl_handle_event);
1481         nl_cb_put(drv->nl_cb);
1482
1483         eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1484                              drv, NULL);
1485
1486         os_free(drv->filter_ssids);
1487
1488         os_free(drv);
1489 }
1490
1491
1492 /**
1493  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1494  * @eloop_ctx: Driver private data
1495  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1496  *
1497  * This function can be used as registered timeout when starting a scan to
1498  * generate a scan completed event if the driver does not report this.
1499  */
1500 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1501 {
1502         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1503         if (drv->ap_scan_as_station) {
1504                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1505                                             IEEE80211_MODE_AP);
1506                 drv->ap_scan_as_station = 0;
1507         }
1508         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1509         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1510 }
1511
1512
1513 /**
1514  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1515  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1516  * @params: Scan parameters
1517  * Returns: 0 on success, -1 on failure
1518  */
1519 static int wpa_driver_nl80211_scan(void *priv,
1520                                    struct wpa_driver_scan_params *params)
1521 {
1522         struct i802_bss *bss = priv;
1523         struct wpa_driver_nl80211_data *drv = bss->drv;
1524         int ret = 0, timeout;
1525         struct nl_msg *msg, *ssids, *freqs;
1526         size_t i;
1527
1528         msg = nlmsg_alloc();
1529         ssids = nlmsg_alloc();
1530         freqs = nlmsg_alloc();
1531         if (!msg || !ssids || !freqs) {
1532                 nlmsg_free(msg);
1533                 nlmsg_free(ssids);
1534                 nlmsg_free(freqs);
1535                 return -1;
1536         }
1537
1538         os_free(drv->filter_ssids);
1539         drv->filter_ssids = params->filter_ssids;
1540         params->filter_ssids = NULL;
1541         drv->num_filter_ssids = params->num_filter_ssids;
1542
1543         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1544                     NL80211_CMD_TRIGGER_SCAN, 0);
1545
1546         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1547
1548         for (i = 0; i < params->num_ssids; i++) {
1549                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1550                                   params->ssids[i].ssid,
1551                                   params->ssids[i].ssid_len);
1552                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1553                         params->ssids[i].ssid);
1554         }
1555         if (params->num_ssids)
1556                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1557
1558         if (params->extra_ies) {
1559                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1560                                   params->extra_ies, params->extra_ies_len);
1561                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1562                         params->extra_ies);
1563         }
1564
1565         if (params->freqs) {
1566                 for (i = 0; params->freqs[i]; i++) {
1567                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1568                                    "MHz", params->freqs[i]);
1569                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1570                 }
1571                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1572         }
1573
1574         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1575         msg = NULL;
1576         if (ret) {
1577                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1578                            "(%s)", ret, strerror(-ret));
1579 #ifdef HOSTAPD
1580                 if (drv->nlmode == NL80211_IFTYPE_AP) {
1581                         /*
1582                          * mac80211 does not allow scan requests in AP mode, so
1583                          * try to do this in station mode.
1584                          */
1585                         if (wpa_driver_nl80211_set_mode(bss,
1586                                                         IEEE80211_MODE_INFRA))
1587                                 goto nla_put_failure;
1588
1589                         if (wpa_driver_nl80211_scan(drv, params)) {
1590                                 wpa_driver_nl80211_set_mode(bss,
1591                                                             IEEE80211_MODE_AP);
1592                                 goto nla_put_failure;
1593                         }
1594
1595                         /* Restore AP mode when processing scan results */
1596                         drv->ap_scan_as_station = 1;
1597                         ret = 0;
1598                 } else
1599                         goto nla_put_failure;
1600 #else /* HOSTAPD */
1601                 goto nla_put_failure;
1602 #endif /* HOSTAPD */
1603         }
1604
1605         /* Not all drivers generate "scan completed" wireless event, so try to
1606          * read results after a timeout. */
1607         timeout = 10;
1608         if (drv->scan_complete_events) {
1609                 /*
1610                  * The driver seems to deliver events to notify when scan is
1611                  * complete, so use longer timeout to avoid race conditions
1612                  * with scanning and following association request.
1613                  */
1614                 timeout = 30;
1615         }
1616         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1617                    "seconds", ret, timeout);
1618         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1619         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1620                                drv, drv->ctx);
1621
1622 nla_put_failure:
1623         nlmsg_free(ssids);
1624         nlmsg_free(msg);
1625         nlmsg_free(freqs);
1626         return ret;
1627 }
1628
1629
1630 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1631 {
1632         const u8 *end, *pos;
1633
1634         if (ies == NULL)
1635                 return NULL;
1636
1637         pos = ies;
1638         end = ies + ies_len;
1639
1640         while (pos + 1 < end) {
1641                 if (pos + 2 + pos[1] > end)
1642                         break;
1643                 if (pos[0] == ie)
1644                         return pos;
1645                 pos += 2 + pos[1];
1646         }
1647
1648         return NULL;
1649 }
1650
1651
1652 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1653                                  const u8 *ie, size_t ie_len)
1654 {
1655         const u8 *ssid;
1656         size_t i;
1657
1658         if (drv->filter_ssids == NULL)
1659                 return 0;
1660
1661         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1662         if (ssid == NULL)
1663                 return 1;
1664
1665         for (i = 0; i < drv->num_filter_ssids; i++) {
1666                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1667                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1668                     0)
1669                         return 0;
1670         }
1671
1672         return 1;
1673 }
1674
1675
1676 struct nl80211_bss_info_arg {
1677         struct wpa_driver_nl80211_data *drv;
1678         struct wpa_scan_results *res;
1679 };
1680
1681 static int bss_info_handler(struct nl_msg *msg, void *arg)
1682 {
1683         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1684         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1685         struct nlattr *bss[NL80211_BSS_MAX + 1];
1686         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1687                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1688                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1689                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1690                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1691                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1692                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1693                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1694                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1695                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1696                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1697                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1698         };
1699         struct nl80211_bss_info_arg *_arg = arg;
1700         struct wpa_scan_results *res = _arg->res;
1701         struct wpa_scan_res **tmp;
1702         struct wpa_scan_res *r;
1703         const u8 *ie, *beacon_ie;
1704         size_t ie_len, beacon_ie_len;
1705         u8 *pos;
1706
1707         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1708                   genlmsg_attrlen(gnlh, 0), NULL);
1709         if (!tb[NL80211_ATTR_BSS])
1710                 return NL_SKIP;
1711         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1712                              bss_policy))
1713                 return NL_SKIP;
1714         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1715                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1716                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1717         } else {
1718                 ie = NULL;
1719                 ie_len = 0;
1720         }
1721         if (bss[NL80211_BSS_BEACON_IES]) {
1722                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1723                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1724         } else {
1725                 beacon_ie = NULL;
1726                 beacon_ie_len = 0;
1727         }
1728
1729         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1730                                   ie ? ie_len : beacon_ie_len))
1731                 return NL_SKIP;
1732
1733         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1734         if (r == NULL)
1735                 return NL_SKIP;
1736         if (bss[NL80211_BSS_BSSID])
1737                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1738                           ETH_ALEN);
1739         if (bss[NL80211_BSS_FREQUENCY])
1740                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1741         if (bss[NL80211_BSS_BEACON_INTERVAL])
1742                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1743         if (bss[NL80211_BSS_CAPABILITY])
1744                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1745         r->flags |= WPA_SCAN_NOISE_INVALID;
1746         if (bss[NL80211_BSS_SIGNAL_MBM]) {
1747                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1748                 r->level /= 100; /* mBm to dBm */
1749                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1750         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1751                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1752                 r->flags |= WPA_SCAN_LEVEL_INVALID;
1753         } else
1754                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1755         if (bss[NL80211_BSS_TSF])
1756                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1757         if (bss[NL80211_BSS_SEEN_MS_AGO])
1758                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1759         r->ie_len = ie_len;
1760         pos = (u8 *) (r + 1);
1761         if (ie) {
1762                 os_memcpy(pos, ie, ie_len);
1763                 pos += ie_len;
1764         }
1765         r->beacon_ie_len = beacon_ie_len;
1766         if (beacon_ie)
1767                 os_memcpy(pos, beacon_ie, beacon_ie_len);
1768
1769         if (bss[NL80211_BSS_STATUS]) {
1770                 enum nl80211_bss_status status;
1771                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1772                 switch (status) {
1773                 case NL80211_BSS_STATUS_AUTHENTICATED:
1774                         r->flags |= WPA_SCAN_AUTHENTICATED;
1775                         break;
1776                 case NL80211_BSS_STATUS_ASSOCIATED:
1777                         r->flags |= WPA_SCAN_ASSOCIATED;
1778                         break;
1779                 default:
1780                         break;
1781                 }
1782         }
1783
1784         tmp = os_realloc(res->res,
1785                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1786         if (tmp == NULL) {
1787                 os_free(r);
1788                 return NL_SKIP;
1789         }
1790         tmp[res->num++] = r;
1791         res->res = tmp;
1792
1793         return NL_SKIP;
1794 }
1795
1796
1797 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1798                                  const u8 *addr)
1799 {
1800         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1801                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1802                            "mismatch (" MACSTR ")", MAC2STR(addr));
1803                 wpa_driver_nl80211_mlme(drv, addr,
1804                                         NL80211_CMD_DEAUTHENTICATE,
1805                                         WLAN_REASON_PREV_AUTH_NOT_VALID);
1806         }
1807 }
1808
1809
1810 static void wpa_driver_nl80211_check_bss_status(
1811         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1812 {
1813         size_t i;
1814
1815         for (i = 0; i < res->num; i++) {
1816                 struct wpa_scan_res *r = res->res[i];
1817                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1818                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1819                                    "indicates BSS status with " MACSTR
1820                                    " as authenticated",
1821                                    MAC2STR(r->bssid));
1822                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1823                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1824                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1825                             0) {
1826                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1827                                            " in local state (auth=" MACSTR
1828                                            " assoc=" MACSTR ")",
1829                                            MAC2STR(drv->auth_bssid),
1830                                            MAC2STR(drv->bssid));
1831                                 clear_state_mismatch(drv, r->bssid);
1832                         }
1833                 }
1834
1835                 if (r->flags & WPA_SCAN_ASSOCIATED) {
1836                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1837                                    "indicate BSS status with " MACSTR
1838                                    " as associated",
1839                                    MAC2STR(r->bssid));
1840                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1841                             !drv->associated) {
1842                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1843                                            "(not associated) does not match "
1844                                            "with BSS state");
1845                                 clear_state_mismatch(drv, r->bssid);
1846                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1847                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1848                                    0) {
1849                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1850                                            "(associated with " MACSTR ") does "
1851                                            "not match with BSS state",
1852                                            MAC2STR(drv->bssid));
1853                                 clear_state_mismatch(drv, r->bssid);
1854                                 clear_state_mismatch(drv, drv->bssid);
1855                         }
1856                 }
1857         }
1858 }
1859
1860
1861 static void wpa_scan_results_free(struct wpa_scan_results *res)
1862 {
1863         size_t i;
1864
1865         if (res == NULL)
1866                 return;
1867
1868         for (i = 0; i < res->num; i++)
1869                 os_free(res->res[i]);
1870         os_free(res->res);
1871         os_free(res);
1872 }
1873
1874
1875 static struct wpa_scan_results *
1876 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
1877 {
1878         struct nl_msg *msg;
1879         struct wpa_scan_results *res;
1880         int ret;
1881         struct nl80211_bss_info_arg arg;
1882
1883         res = os_zalloc(sizeof(*res));
1884         if (res == NULL)
1885                 return NULL;
1886         msg = nlmsg_alloc();
1887         if (!msg)
1888                 goto nla_put_failure;
1889
1890         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1891                     NL80211_CMD_GET_SCAN, 0);
1892         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1893
1894         arg.drv = drv;
1895         arg.res = res;
1896         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1897         msg = NULL;
1898         if (ret == 0) {
1899                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1900                            (unsigned long) res->num);
1901                 return res;
1902         }
1903         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1904                    "(%s)", ret, strerror(-ret));
1905 nla_put_failure:
1906         nlmsg_free(msg);
1907         wpa_scan_results_free(res);
1908         return NULL;
1909 }
1910
1911
1912 /**
1913  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1914  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1915  * Returns: Scan results on success, -1 on failure
1916  */
1917 static struct wpa_scan_results *
1918 wpa_driver_nl80211_get_scan_results(void *priv)
1919 {
1920         struct i802_bss *bss = priv;
1921         struct wpa_driver_nl80211_data *drv = bss->drv;
1922         struct wpa_scan_results *res;
1923
1924         res = nl80211_get_scan_results(drv);
1925         if (res)
1926                 wpa_driver_nl80211_check_bss_status(drv, res);
1927         return res;
1928 }
1929
1930
1931 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
1932 {
1933         struct wpa_scan_results *res;
1934         size_t i;
1935
1936         res = nl80211_get_scan_results(drv);
1937         if (res == NULL) {
1938                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
1939                 return;
1940         }
1941
1942         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
1943         for (i = 0; i < res->num; i++) {
1944                 struct wpa_scan_res *r = res->res[i];
1945                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
1946                            (int) i, (int) res->num, MAC2STR(r->bssid),
1947                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
1948                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
1949         }
1950
1951         wpa_scan_results_free(res);
1952 }
1953
1954
1955 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1956                                       enum wpa_alg alg, const u8 *addr,
1957                                       int key_idx, int set_tx,
1958                                       const u8 *seq, size_t seq_len,
1959                                       const u8 *key, size_t key_len)
1960 {
1961         struct i802_bss *bss = priv;
1962         struct wpa_driver_nl80211_data *drv = bss->drv;
1963         int ifindex = if_nametoindex(ifname);
1964         struct nl_msg *msg;
1965         int ret;
1966
1967         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1968                    "set_tx=%d seq_len=%lu key_len=%lu",
1969                    __func__, ifindex, alg, addr, key_idx, set_tx,
1970                    (unsigned long) seq_len, (unsigned long) key_len);
1971
1972         msg = nlmsg_alloc();
1973         if (!msg)
1974                 return -ENOMEM;
1975
1976         if (alg == WPA_ALG_NONE) {
1977                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1978                             0, NL80211_CMD_DEL_KEY, 0);
1979         } else {
1980                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1981                             0, NL80211_CMD_NEW_KEY, 0);
1982                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1983                 switch (alg) {
1984                 case WPA_ALG_WEP:
1985                         if (key_len == 5)
1986                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1987                                             WLAN_CIPHER_SUITE_WEP40);
1988                         else
1989                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1990                                             WLAN_CIPHER_SUITE_WEP104);
1991                         break;
1992                 case WPA_ALG_TKIP:
1993                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1994                                     WLAN_CIPHER_SUITE_TKIP);
1995                         break;
1996                 case WPA_ALG_CCMP:
1997                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1998                                     WLAN_CIPHER_SUITE_CCMP);
1999                         break;
2000                 case WPA_ALG_IGTK:
2001                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2002                                     WLAN_CIPHER_SUITE_AES_CMAC);
2003                         break;
2004                 default:
2005                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2006                                    "algorithm %d", __func__, alg);
2007                         nlmsg_free(msg);
2008                         return -1;
2009                 }
2010         }
2011
2012         if (seq && seq_len)
2013                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2014
2015         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2016         {
2017                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2018                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2019         }
2020         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2021         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2022
2023         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2024         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2025                 ret = 0;
2026         if (ret)
2027                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2028                            ret, strerror(-ret));
2029
2030         /*
2031          * If we failed or don't need to set the default TX key (below),
2032          * we're done here.
2033          */
2034         if (ret || !set_tx || alg == WPA_ALG_NONE)
2035                 return ret;
2036 #ifdef HOSTAPD /* FIX: is this needed? */
2037         if (addr)
2038                 return ret;
2039 #endif /* HOSTAPD */
2040
2041         msg = nlmsg_alloc();
2042         if (!msg)
2043                 return -ENOMEM;
2044
2045         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2046                     0, NL80211_CMD_SET_KEY, 0);
2047         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2048         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2049         if (alg == WPA_ALG_IGTK)
2050                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2051         else
2052                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2053
2054         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2055         if (ret == -ENOENT)
2056                 ret = 0;
2057         if (ret)
2058                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2059                            "err=%d %s)", ret, strerror(-ret));
2060         return ret;
2061
2062 nla_put_failure:
2063         return -ENOBUFS;
2064 }
2065
2066
2067 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2068                       int key_idx, int defkey,
2069                       const u8 *seq, size_t seq_len,
2070                       const u8 *key, size_t key_len)
2071 {
2072         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2073         if (!key_attr)
2074                 return -1;
2075
2076         if (defkey && alg == WPA_ALG_IGTK)
2077                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2078         else if (defkey)
2079                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2080
2081         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2082
2083         switch (alg) {
2084         case WPA_ALG_WEP:
2085                 if (key_len == 5)
2086                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2087                                     WLAN_CIPHER_SUITE_WEP40);
2088                 else
2089                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2090                                     WLAN_CIPHER_SUITE_WEP104);
2091                 break;
2092         case WPA_ALG_TKIP:
2093                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2094                 break;
2095         case WPA_ALG_CCMP:
2096                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2097                 break;
2098         case WPA_ALG_IGTK:
2099                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2100                             WLAN_CIPHER_SUITE_AES_CMAC);
2101                 break;
2102         default:
2103                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2104                            "algorithm %d", __func__, alg);
2105                 return -1;
2106         }
2107
2108         if (seq && seq_len)
2109                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2110
2111         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2112
2113         nla_nest_end(msg, key_attr);
2114
2115         return 0;
2116  nla_put_failure:
2117         return -1;
2118 }
2119
2120
2121 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2122                                  struct nl_msg *msg)
2123 {
2124         int i, privacy = 0;
2125         struct nlattr *nl_keys, *nl_key;
2126
2127         for (i = 0; i < 4; i++) {
2128                 if (!params->wep_key[i])
2129                         continue;
2130                 privacy = 1;
2131                 break;
2132         }
2133         if (!privacy)
2134                 return 0;
2135
2136         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2137
2138         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2139         if (!nl_keys)
2140                 goto nla_put_failure;
2141
2142         for (i = 0; i < 4; i++) {
2143                 if (!params->wep_key[i])
2144                         continue;
2145
2146                 nl_key = nla_nest_start(msg, i);
2147                 if (!nl_key)
2148                         goto nla_put_failure;
2149
2150                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2151                         params->wep_key[i]);
2152                 if (params->wep_key_len[i] == 5)
2153                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2154                                     WLAN_CIPHER_SUITE_WEP40);
2155                 else
2156                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2157                                     WLAN_CIPHER_SUITE_WEP104);
2158
2159                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2160
2161                 if (i == params->wep_tx_keyidx)
2162                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2163
2164                 nla_nest_end(msg, nl_key);
2165         }
2166         nla_nest_end(msg, nl_keys);
2167
2168         return 0;
2169
2170 nla_put_failure:
2171         return -ENOBUFS;
2172 }
2173
2174
2175 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2176                                    const u8 *addr, int cmd, u16 reason_code)
2177 {
2178         int ret = -1;
2179         struct nl_msg *msg;
2180
2181         msg = nlmsg_alloc();
2182         if (!msg)
2183                 return -1;
2184
2185         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2186
2187         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2188         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2189         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2190
2191         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2192         msg = NULL;
2193         if (ret) {
2194                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2195                            "(%s)", ret, strerror(-ret));
2196                 goto nla_put_failure;
2197         }
2198         ret = 0;
2199
2200 nla_put_failure:
2201         nlmsg_free(msg);
2202         return ret;
2203 }
2204
2205
2206 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2207                                          const u8 *addr, int reason_code)
2208 {
2209         wpa_printf(MSG_DEBUG, "%s", __func__);
2210         drv->associated = 0;
2211         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2212                                        reason_code);
2213 }
2214
2215
2216 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2217                                              int reason_code)
2218 {
2219         struct i802_bss *bss = priv;
2220         struct wpa_driver_nl80211_data *drv = bss->drv;
2221         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2222                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2223         wpa_printf(MSG_DEBUG, "%s", __func__);
2224         drv->associated = 0;
2225         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2226                                        reason_code);
2227 }
2228
2229
2230 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2231                                            int reason_code)
2232 {
2233         struct i802_bss *bss = priv;
2234         struct wpa_driver_nl80211_data *drv = bss->drv;
2235         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2236                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2237         wpa_printf(MSG_DEBUG, "%s", __func__);
2238         drv->associated = 0;
2239         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2240                                        reason_code);
2241 }
2242
2243
2244 static int wpa_driver_nl80211_authenticate(
2245         void *priv, struct wpa_driver_auth_params *params)
2246 {
2247         struct i802_bss *bss = priv;
2248         struct wpa_driver_nl80211_data *drv = bss->drv;
2249         int ret = -1, i;
2250         struct nl_msg *msg;
2251         enum nl80211_auth_type type;
2252         int count = 0;
2253
2254         drv->associated = 0;
2255         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2256         /* FIX: IBSS mode */
2257         if (drv->nlmode != NL80211_IFTYPE_STATION)
2258                 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2259
2260         if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2261                 return -1;
2262
2263 retry:
2264         msg = nlmsg_alloc();
2265         if (!msg)
2266                 return -1;
2267
2268         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2269                    drv->ifindex);
2270
2271         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2272                     NL80211_CMD_AUTHENTICATE, 0);
2273
2274         for (i = 0; i < 4; i++) {
2275                 if (!params->wep_key[i])
2276                         continue;
2277                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2278                                            NULL, i,
2279                                            i == params->wep_tx_keyidx, NULL, 0,
2280                                            params->wep_key[i],
2281                                            params->wep_key_len[i]);
2282                 if (params->wep_tx_keyidx != i)
2283                         continue;
2284                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2285                                params->wep_key[i], params->wep_key_len[i])) {
2286                         nlmsg_free(msg);
2287                         return -1;
2288                 }
2289         }
2290
2291         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2292         if (params->bssid) {
2293                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2294                            MAC2STR(params->bssid));
2295                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2296         }
2297         if (params->freq) {
2298                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2299                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2300         }
2301         if (params->ssid) {
2302                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2303                                   params->ssid, params->ssid_len);
2304                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2305                         params->ssid);
2306         }
2307         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2308         if (params->ie)
2309                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2310         /*
2311          * TODO: if multiple auth_alg options enabled, try them one by one if
2312          * the AP rejects authentication due to unknown auth alg
2313          */
2314         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2315                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2316         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2317                 type = NL80211_AUTHTYPE_SHARED_KEY;
2318         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2319                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2320         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2321                 type = NL80211_AUTHTYPE_FT;
2322         else
2323                 goto nla_put_failure;
2324         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2325         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2326
2327         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2328         msg = NULL;
2329         if (ret) {
2330                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2331                            "(%s)", ret, strerror(-ret));
2332                 count++;
2333                 if (ret == -EALREADY && count == 1 && params->bssid) {
2334                         /*
2335                          * mac80211 does not currently accept new
2336                          * authentication if we are already authenticated. As a
2337                          * workaround, force deauthentication and try again.
2338                          */
2339                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2340                                    "after forced deauthentication");
2341                         wpa_driver_nl80211_deauthenticate(
2342                                 bss, params->bssid,
2343                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2344                         nlmsg_free(msg);
2345                         goto retry;
2346                 }
2347                 goto nla_put_failure;
2348         }
2349         ret = 0;
2350         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2351                    "successfully");
2352
2353 nla_put_failure:
2354         nlmsg_free(msg);
2355         return ret;
2356 }
2357
2358
2359 struct phy_info_arg {
2360         u16 *num_modes;
2361         struct hostapd_hw_modes *modes;
2362 };
2363
2364 static int phy_info_handler(struct nl_msg *msg, void *arg)
2365 {
2366         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2367         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2368         struct phy_info_arg *phy_info = arg;
2369
2370         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2371
2372         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2373         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2374                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2375                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2376                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2377                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2378                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2379                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2380         };
2381
2382         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2383         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2384                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2385                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2386         };
2387
2388         struct nlattr *nl_band;
2389         struct nlattr *nl_freq;
2390         struct nlattr *nl_rate;
2391         int rem_band, rem_freq, rem_rate;
2392         struct hostapd_hw_modes *mode;
2393         int idx, mode_is_set;
2394
2395         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2396                   genlmsg_attrlen(gnlh, 0), NULL);
2397
2398         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2399                 return NL_SKIP;
2400
2401         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2402                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2403                 if (!mode)
2404                         return NL_SKIP;
2405                 phy_info->modes = mode;
2406
2407                 mode_is_set = 0;
2408
2409                 mode = &phy_info->modes[*(phy_info->num_modes)];
2410                 memset(mode, 0, sizeof(*mode));
2411                 *(phy_info->num_modes) += 1;
2412
2413                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2414                           nla_len(nl_band), NULL);
2415
2416                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2417                         mode->ht_capab = nla_get_u16(
2418                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2419                 }
2420
2421                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2422                         mode->a_mpdu_params |= nla_get_u8(
2423                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2424                                 0x03;
2425                 }
2426
2427                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2428                         mode->a_mpdu_params |= nla_get_u8(
2429                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2430                                 2;
2431                 }
2432
2433                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2434                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2435                         u8 *mcs;
2436                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2437                         os_memcpy(mode->mcs_set, mcs, 16);
2438                 }
2439
2440                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2441                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2442                                   nla_len(nl_freq), freq_policy);
2443                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2444                                 continue;
2445                         mode->num_channels++;
2446                 }
2447
2448                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2449                 if (!mode->channels)
2450                         return NL_SKIP;
2451
2452                 idx = 0;
2453
2454                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2455                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2456                                   nla_len(nl_freq), freq_policy);
2457                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2458                                 continue;
2459
2460                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2461                         mode->channels[idx].flag = 0;
2462
2463                         if (!mode_is_set) {
2464                                 /* crude heuristic */
2465                                 if (mode->channels[idx].freq < 4000)
2466                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2467                                 else
2468                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2469                                 mode_is_set = 1;
2470                         }
2471
2472                         /* crude heuristic */
2473                         if (mode->channels[idx].freq < 4000)
2474                                 if (mode->channels[idx].freq == 2484)
2475                                         mode->channels[idx].chan = 14;
2476                                 else
2477                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2478                         else
2479                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2480
2481                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2482                                 mode->channels[idx].flag |=
2483                                         HOSTAPD_CHAN_DISABLED;
2484                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2485                                 mode->channels[idx].flag |=
2486                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2487                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2488                                 mode->channels[idx].flag |=
2489                                         HOSTAPD_CHAN_NO_IBSS;
2490                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2491                                 mode->channels[idx].flag |=
2492                                         HOSTAPD_CHAN_RADAR;
2493
2494                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2495                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2496                                 mode->channels[idx].max_tx_power =
2497                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2498
2499                         idx++;
2500                 }
2501
2502                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2503                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2504                                   nla_len(nl_rate), rate_policy);
2505                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2506                                 continue;
2507                         mode->num_rates++;
2508                 }
2509
2510                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2511                 if (!mode->rates)
2512                         return NL_SKIP;
2513
2514                 idx = 0;
2515
2516                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2517                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2518                                   nla_len(nl_rate), rate_policy);
2519                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2520                                 continue;
2521                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2522
2523                         /* crude heuristic */
2524                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2525                             mode->rates[idx] > 200)
2526                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2527
2528                         idx++;
2529                 }
2530         }
2531
2532         return NL_SKIP;
2533 }
2534
2535 static struct hostapd_hw_modes *
2536 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2537 {
2538         u16 m;
2539         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2540         int i, mode11g_idx = -1;
2541
2542         /* If only 802.11g mode is included, use it to construct matching
2543          * 802.11b mode data. */
2544
2545         for (m = 0; m < *num_modes; m++) {
2546                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2547                         return modes; /* 802.11b already included */
2548                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2549                         mode11g_idx = m;
2550         }
2551
2552         if (mode11g_idx < 0)
2553                 return modes; /* 2.4 GHz band not supported at all */
2554
2555         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2556         if (nmodes == NULL)
2557                 return modes; /* Could not add 802.11b mode */
2558
2559         mode = &nmodes[*num_modes];
2560         os_memset(mode, 0, sizeof(*mode));
2561         (*num_modes)++;
2562         modes = nmodes;
2563
2564         mode->mode = HOSTAPD_MODE_IEEE80211B;
2565
2566         mode11g = &modes[mode11g_idx];
2567         mode->num_channels = mode11g->num_channels;
2568         mode->channels = os_malloc(mode11g->num_channels *
2569                                    sizeof(struct hostapd_channel_data));
2570         if (mode->channels == NULL) {
2571                 (*num_modes)--;
2572                 return modes; /* Could not add 802.11b mode */
2573         }
2574         os_memcpy(mode->channels, mode11g->channels,
2575                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
2576
2577         mode->num_rates = 0;
2578         mode->rates = os_malloc(4 * sizeof(int));
2579         if (mode->rates == NULL) {
2580                 os_free(mode->channels);
2581                 (*num_modes)--;
2582                 return modes; /* Could not add 802.11b mode */
2583         }
2584
2585         for (i = 0; i < mode11g->num_rates; i++) {
2586                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2587                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2588                         continue;
2589                 mode->rates[mode->num_rates] = mode11g->rates[i];
2590                 mode->num_rates++;
2591                 if (mode->num_rates == 4)
2592                         break;
2593         }
2594
2595         if (mode->num_rates == 0) {
2596                 os_free(mode->channels);
2597                 os_free(mode->rates);
2598                 (*num_modes)--;
2599                 return modes; /* No 802.11b rates */
2600         }
2601
2602         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2603                    "information");
2604
2605         return modes;
2606 }
2607
2608
2609 static struct hostapd_hw_modes *
2610 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2611 {
2612         struct i802_bss *bss = priv;
2613         struct wpa_driver_nl80211_data *drv = bss->drv;
2614         struct nl_msg *msg;
2615         struct phy_info_arg result = {
2616                 .num_modes = num_modes,
2617                 .modes = NULL,
2618         };
2619
2620         *num_modes = 0;
2621         *flags = 0;
2622
2623         msg = nlmsg_alloc();
2624         if (!msg)
2625                 return NULL;
2626
2627         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2628                     0, NL80211_CMD_GET_WIPHY, 0);
2629
2630         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2631
2632         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2633                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2634  nla_put_failure:
2635         return NULL;
2636 }
2637
2638
2639 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2640                                          const void *data, size_t len,
2641                                          int encrypt)
2642 {
2643         __u8 rtap_hdr[] = {
2644                 0x00, 0x00, /* radiotap version */
2645                 0x0e, 0x00, /* radiotap length */
2646                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2647                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2648                 0x00,       /* padding */
2649                 0x00, 0x00, /* RX and TX flags to indicate that */
2650                 0x00, 0x00, /* this is the injected frame directly */
2651         };
2652         struct iovec iov[2] = {
2653                 {
2654                         .iov_base = &rtap_hdr,
2655                         .iov_len = sizeof(rtap_hdr),
2656                 },
2657                 {
2658                         .iov_base = (void *) data,
2659                         .iov_len = len,
2660                 }
2661         };
2662         struct msghdr msg = {
2663                 .msg_name = NULL,
2664                 .msg_namelen = 0,
2665                 .msg_iov = iov,
2666                 .msg_iovlen = 2,
2667                 .msg_control = NULL,
2668                 .msg_controllen = 0,
2669                 .msg_flags = 0,
2670         };
2671
2672         if (encrypt)
2673                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2674
2675         return sendmsg(drv->monitor_sock, &msg, 0);
2676 }
2677
2678
2679 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2680                                         size_t data_len)
2681 {
2682         struct i802_bss *bss = priv;
2683         struct wpa_driver_nl80211_data *drv = bss->drv;
2684         struct ieee80211_mgmt *mgmt;
2685         int encrypt = 1;
2686         u16 fc;
2687
2688         mgmt = (struct ieee80211_mgmt *) data;
2689         fc = le_to_host16(mgmt->frame_control);
2690
2691         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2692             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2693                 /*
2694                  * Only one of the authentication frame types is encrypted.
2695                  * In order for static WEP encryption to work properly (i.e.,
2696                  * to not encrypt the frame), we need to tell mac80211 about
2697                  * the frames that must not be encrypted.
2698                  */
2699                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2700                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2701                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2702                         encrypt = 0;
2703         }
2704
2705         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2706 }
2707
2708
2709 static int wpa_driver_nl80211_set_beacon(void *priv,
2710                                          const u8 *head, size_t head_len,
2711                                          const u8 *tail, size_t tail_len,
2712                                          int dtim_period, int beacon_int)
2713 {
2714         struct i802_bss *bss = priv;
2715         struct wpa_driver_nl80211_data *drv = bss->drv;
2716         struct nl_msg *msg;
2717         u8 cmd = NL80211_CMD_NEW_BEACON;
2718         int ret;
2719         int beacon_set;
2720         int ifindex = if_nametoindex(bss->ifname);
2721
2722         beacon_set = bss->beacon_set;
2723
2724         msg = nlmsg_alloc();
2725         if (!msg)
2726                 return -ENOMEM;
2727
2728         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2729                    beacon_set);
2730         if (beacon_set)
2731                 cmd = NL80211_CMD_SET_BEACON;
2732
2733         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2734                     0, cmd, 0);
2735         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2736         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2737         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2738         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2739         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2740
2741         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2742         if (ret) {
2743                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2744                            ret, strerror(-ret));
2745         } else {
2746                 bss->beacon_set = 1;
2747         }
2748         return ret;
2749  nla_put_failure:
2750         return -ENOBUFS;
2751 }
2752
2753
2754 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2755                                        int freq, int ht_enabled,
2756                                        int sec_channel_offset)
2757 {
2758         struct nl_msg *msg;
2759         int ret;
2760
2761         msg = nlmsg_alloc();
2762         if (!msg)
2763                 return -1;
2764
2765         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2766                     NL80211_CMD_SET_WIPHY, 0);
2767
2768         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2769         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2770         if (ht_enabled) {
2771                 switch (sec_channel_offset) {
2772                 case -1:
2773                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2774                                     NL80211_CHAN_HT40MINUS);
2775                         break;
2776                 case 1:
2777                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2778                                     NL80211_CHAN_HT40PLUS);
2779                         break;
2780                 default:
2781                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2782                                     NL80211_CHAN_HT20);
2783                         break;
2784                 }
2785         }
2786
2787         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2788         if (ret == 0)
2789                 return 0;
2790         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2791                    "%d (%s)", freq, ret, strerror(-ret));
2792 nla_put_failure:
2793         return -1;
2794 }
2795
2796
2797 static int wpa_driver_nl80211_sta_add(void *priv,
2798                                       struct hostapd_sta_add_params *params)
2799 {
2800         struct i802_bss *bss = priv;
2801         struct wpa_driver_nl80211_data *drv = bss->drv;
2802         struct nl_msg *msg;
2803         int ret = -ENOBUFS;
2804
2805         msg = nlmsg_alloc();
2806         if (!msg)
2807                 return -ENOMEM;
2808
2809         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2810                     0, NL80211_CMD_NEW_STATION, 0);
2811
2812         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
2813         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2814         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2815         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2816                 params->supp_rates);
2817         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2818                     params->listen_interval);
2819         if (params->ht_capabilities) {
2820                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2821                         sizeof(*params->ht_capabilities),
2822                         params->ht_capabilities);
2823         }
2824
2825         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2826         if (ret)
2827                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2828                            "result: %d (%s)", ret, strerror(-ret));
2829         if (ret == -EEXIST)
2830                 ret = 0;
2831  nla_put_failure:
2832         return ret;
2833 }
2834
2835
2836 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2837 {
2838         struct i802_bss *bss = priv;
2839         struct wpa_driver_nl80211_data *drv = bss->drv;
2840         struct nl_msg *msg;
2841         int ret;
2842
2843         msg = nlmsg_alloc();
2844         if (!msg)
2845                 return -ENOMEM;
2846
2847         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2848                     0, NL80211_CMD_DEL_STATION, 0);
2849
2850         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2851                     if_nametoindex(bss->ifname));
2852         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2853
2854         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2855         if (ret == -ENOENT)
2856                 return 0;
2857         return ret;
2858  nla_put_failure:
2859         return -ENOBUFS;
2860 }
2861
2862
2863 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2864                                  int ifidx)
2865 {
2866         struct nl_msg *msg;
2867
2868         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2869
2870 #ifdef HOSTAPD
2871         /* stop listening for EAPOL on this interface */
2872         del_ifidx(drv, ifidx);
2873 #endif /* HOSTAPD */
2874
2875         msg = nlmsg_alloc();
2876         if (!msg)
2877                 goto nla_put_failure;
2878
2879         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2880                     0, NL80211_CMD_DEL_INTERFACE, 0);
2881         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2882
2883         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2884                 return;
2885  nla_put_failure:
2886         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
2887 }
2888
2889
2890 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2891                                      const char *ifname,
2892                                      enum nl80211_iftype iftype,
2893                                      const u8 *addr, int wds)
2894 {
2895         struct nl_msg *msg, *flags = NULL;
2896         int ifidx;
2897         int ret = -ENOBUFS;
2898
2899         msg = nlmsg_alloc();
2900         if (!msg)
2901                 return -1;
2902
2903         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2904                     0, NL80211_CMD_NEW_INTERFACE, 0);
2905         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2906         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2907         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2908
2909         if (iftype == NL80211_IFTYPE_MONITOR) {
2910                 int err;
2911
2912                 flags = nlmsg_alloc();
2913                 if (!flags)
2914                         goto nla_put_failure;
2915
2916                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2917
2918                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2919
2920                 nlmsg_free(flags);
2921
2922                 if (err)
2923                         goto nla_put_failure;
2924         } else if (wds) {
2925                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
2926         }
2927
2928         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2929         if (ret) {
2930  nla_put_failure:
2931                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2932                            ifname, ret, strerror(-ret));
2933                 return ret;
2934         }
2935
2936         ifidx = if_nametoindex(ifname);
2937         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2938                    ifname, ifidx);
2939
2940         if (ifidx <= 0)
2941                 return -1;
2942
2943 #ifdef HOSTAPD
2944         /* start listening for EAPOL on this interface */
2945         add_ifidx(drv, ifidx);
2946 #endif /* HOSTAPD */
2947
2948         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2949             linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
2950                 nl80211_remove_iface(drv, ifidx);
2951                 return -1;
2952         }
2953
2954         return ifidx;
2955 }
2956
2957
2958 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2959                                 const char *ifname, enum nl80211_iftype iftype,
2960                                 const u8 *addr, int wds)
2961 {
2962         int ret;
2963
2964         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
2965
2966         /* if error occured and interface exists already */
2967         if (ret == -ENFILE && if_nametoindex(ifname)) {
2968                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2969
2970                 /* Try to remove the interface that was already there. */
2971                 nl80211_remove_iface(drv, if_nametoindex(ifname));
2972
2973                 /* Try to create the interface again */
2974                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
2975                                                 wds);
2976         }
2977
2978         if (ret >= 0 && drv->disable_11b_rates)
2979                 nl80211_disable_11b_rates(drv, ret, 1);
2980
2981         return ret;
2982 }
2983
2984
2985 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2986 {
2987         struct ieee80211_hdr *hdr;
2988         u16 fc;
2989         union wpa_event_data event;
2990
2991         hdr = (struct ieee80211_hdr *) buf;
2992         fc = le_to_host16(hdr->frame_control);
2993
2994         os_memset(&event, 0, sizeof(event));
2995         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2996         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2997         event.tx_status.dst = hdr->addr1;
2998         event.tx_status.data = buf;
2999         event.tx_status.data_len = len;
3000         event.tx_status.ack = ok;
3001         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3002 }
3003
3004
3005 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3006                              u8 *buf, size_t len)
3007 {
3008         union wpa_event_data event;
3009         os_memset(&event, 0, sizeof(event));
3010         event.rx_from_unknown.frame = buf;
3011         event.rx_from_unknown.len = len;
3012         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3013 }
3014
3015
3016 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3017                          u8 *buf, size_t len, int datarate, int ssi_signal)
3018 {
3019         struct ieee80211_hdr *hdr;
3020         u16 fc;
3021         union wpa_event_data event;
3022
3023         hdr = (struct ieee80211_hdr *) buf;
3024         fc = le_to_host16(hdr->frame_control);
3025
3026         switch (WLAN_FC_GET_TYPE(fc)) {
3027         case WLAN_FC_TYPE_MGMT:
3028                 os_memset(&event, 0, sizeof(event));
3029                 event.rx_mgmt.frame = buf;
3030                 event.rx_mgmt.frame_len = len;
3031                 event.rx_mgmt.datarate = datarate;
3032                 event.rx_mgmt.ssi_signal = ssi_signal;
3033                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3034                 break;
3035         case WLAN_FC_TYPE_CTRL:
3036                 /* can only get here with PS-Poll frames */
3037                 wpa_printf(MSG_DEBUG, "CTRL");
3038                 from_unknown_sta(drv, buf, len);
3039                 break;
3040         case WLAN_FC_TYPE_DATA:
3041                 from_unknown_sta(drv, buf, len);
3042                 break;
3043         }
3044 }
3045
3046
3047 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3048 {
3049         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3050         int len;
3051         unsigned char buf[3000];
3052         struct ieee80211_radiotap_iterator iter;
3053         int ret;
3054         int datarate = 0, ssi_signal = 0;
3055         int injected = 0, failed = 0, rxflags = 0;
3056
3057         len = recv(sock, buf, sizeof(buf), 0);
3058         if (len < 0) {
3059                 perror("recv");
3060                 return;
3061         }
3062
3063         if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3064                 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3065                            "frame since Probe Request reporting is disabled");
3066                 return;
3067         }
3068
3069         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3070                 printf("received invalid radiotap frame\n");
3071                 return;
3072         }
3073
3074         while (1) {
3075                 ret = ieee80211_radiotap_iterator_next(&iter);
3076                 if (ret == -ENOENT)
3077                         break;
3078                 if (ret) {
3079                         printf("received invalid radiotap frame (%d)\n", ret);
3080                         return;
3081                 }
3082                 switch (iter.this_arg_index) {
3083                 case IEEE80211_RADIOTAP_FLAGS:
3084                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3085                                 len -= 4;
3086                         break;
3087                 case IEEE80211_RADIOTAP_RX_FLAGS:
3088                         rxflags = 1;
3089                         break;
3090                 case IEEE80211_RADIOTAP_TX_FLAGS:
3091                         injected = 1;
3092                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3093                                         IEEE80211_RADIOTAP_F_TX_FAIL;
3094                         break;
3095                 case IEEE80211_RADIOTAP_DATA_RETRIES:
3096                         break;
3097                 case IEEE80211_RADIOTAP_CHANNEL:
3098                         /* TODO: convert from freq/flags to channel number */
3099                         break;
3100                 case IEEE80211_RADIOTAP_RATE:
3101                         datarate = *iter.this_arg * 5;
3102                         break;
3103                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3104                         ssi_signal = *iter.this_arg;
3105                         break;
3106                 }
3107         }
3108
3109         if (rxflags && injected)
3110                 return;
3111
3112         if (!injected)
3113                 handle_frame(drv, buf + iter.max_length,
3114                              len - iter.max_length, datarate, ssi_signal);
3115         else
3116                 handle_tx_callback(drv->ctx, buf + iter.max_length,
3117                                    len - iter.max_length, !failed);
3118 }
3119
3120
3121 /*
3122  * we post-process the filter code later and rewrite
3123  * this to the offset to the last instruction
3124  */
3125 #define PASS    0xFF
3126 #define FAIL    0xFE
3127
3128 static struct sock_filter msock_filter_insns[] = {
3129         /*
3130          * do a little-endian load of the radiotap length field
3131          */
3132         /* load lower byte into A */
3133         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
3134         /* put it into X (== index register) */
3135         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3136         /* load upper byte into A */
3137         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
3138         /* left-shift it by 8 */
3139         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3140         /* or with X */
3141         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3142         /* put result into X */
3143         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3144
3145         /*
3146          * Allow management frames through, this also gives us those
3147          * management frames that we sent ourselves with status
3148          */
3149         /* load the lower byte of the IEEE 802.11 frame control field */
3150         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
3151         /* mask off frame type and version */
3152         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3153         /* accept frame if it's both 0, fall through otherwise */
3154         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3155
3156         /*
3157          * TODO: add a bit to radiotap RX flags that indicates
3158          * that the sending station is not associated, then
3159          * add a filter here that filters on our DA and that flag
3160          * to allow us to deauth frames to that bad station.
3161          *
3162          * Not a regression -- we didn't do it before either.
3163          */
3164
3165 #if 0
3166         /*
3167          * drop non-data frames
3168          */
3169         /* load the lower byte of the frame control field */
3170         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3171         /* mask off QoS bit */
3172         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
3173         /* drop non-data frames */
3174         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
3175 #endif
3176         /* load the upper byte of the frame control field */
3177         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
3178         /* mask off toDS/fromDS */
3179         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
3180         /* accept WDS frames */
3181         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
3182
3183         /*
3184          * add header length to index
3185          */
3186         /* load the lower byte of the frame control field */
3187         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3188         /* mask off QoS bit */
3189         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
3190         /* right shift it by 6 to give 0 or 2 */
3191         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
3192         /* add data frame header length */
3193         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
3194         /* add index, was start of 802.11 header */
3195         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
3196         /* move to index, now start of LL header */
3197         BPF_STMT(BPF_MISC | BPF_TAX, 0),
3198
3199         /*
3200          * Accept empty data frames, we use those for
3201          * polling activity.
3202          */
3203         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
3204         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3205
3206         /*
3207          * Accept EAPOL frames
3208          */
3209         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
3210         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3211         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
3212         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3213
3214         /* keep these last two statements or change the code below */
3215         /* return 0 == "DROP" */
3216         BPF_STMT(BPF_RET | BPF_K, 0),
3217         /* return ~0 == "keep all" */
3218         BPF_STMT(BPF_RET | BPF_K, ~0),
3219 };
3220
3221 static struct sock_fprog msock_filter = {
3222         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3223         .filter = msock_filter_insns,
3224 };
3225
3226
3227 static int add_monitor_filter(int s)
3228 {
3229         int idx;
3230
3231         /* rewrite all PASS/FAIL jump offsets */
3232         for (idx = 0; idx < msock_filter.len; idx++) {
3233                 struct sock_filter *insn = &msock_filter_insns[idx];
3234
3235                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3236                         if (insn->code == (BPF_JMP|BPF_JA)) {
3237                                 if (insn->k == PASS)
3238                                         insn->k = msock_filter.len - idx - 2;
3239                                 else if (insn->k == FAIL)
3240                                         insn->k = msock_filter.len - idx - 3;
3241                         }
3242
3243                         if (insn->jt == PASS)
3244                                 insn->jt = msock_filter.len - idx - 2;
3245                         else if (insn->jt == FAIL)
3246                                 insn->jt = msock_filter.len - idx - 3;
3247
3248                         if (insn->jf == PASS)
3249                                 insn->jf = msock_filter.len - idx - 2;
3250                         else if (insn->jf == FAIL)
3251                                 insn->jf = msock_filter.len - idx - 3;
3252                 }
3253         }
3254
3255         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3256                        &msock_filter, sizeof(msock_filter))) {
3257                 perror("SO_ATTACH_FILTER");
3258                 return -1;
3259         }
3260
3261         return 0;
3262 }
3263
3264
3265 static void nl80211_remove_monitor_interface(
3266         struct wpa_driver_nl80211_data *drv)
3267 {
3268         if (drv->monitor_ifidx >= 0) {
3269                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3270                 drv->monitor_ifidx = -1;
3271         }
3272         if (drv->monitor_sock >= 0) {
3273                 eloop_unregister_read_sock(drv->monitor_sock);
3274                 close(drv->monitor_sock);
3275                 drv->monitor_sock = -1;
3276         }
3277 }
3278
3279
3280 static int
3281 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3282 {
3283         char buf[IFNAMSIZ];
3284         struct sockaddr_ll ll;
3285         int optval;
3286         socklen_t optlen;
3287
3288         snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3289         buf[IFNAMSIZ - 1] = '\0';
3290
3291         drv->monitor_ifidx =
3292                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3293                                      0);
3294
3295         if (drv->monitor_ifidx < 0)
3296                 return -1;
3297
3298         if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3299                 goto error;
3300
3301         memset(&ll, 0, sizeof(ll));
3302         ll.sll_family = AF_PACKET;
3303         ll.sll_ifindex = drv->monitor_ifidx;
3304         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3305         if (drv->monitor_sock < 0) {
3306                 perror("socket[PF_PACKET,SOCK_RAW]");
3307                 goto error;
3308         }
3309
3310         if (add_monitor_filter(drv->monitor_sock)) {
3311                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3312                            "interface; do filtering in user space");
3313                 /* This works, but will cost in performance. */
3314         }
3315
3316         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3317                 perror("monitor socket bind");
3318                 goto error;
3319         }
3320
3321         optlen = sizeof(optval);
3322         optval = 20;
3323         if (setsockopt
3324             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3325                 perror("Failed to set socket priority");
3326                 goto error;
3327         }
3328
3329         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3330                                      drv, NULL)) {
3331                 printf("Could not register monitor read socket\n");
3332                 goto error;
3333         }
3334
3335         return 0;
3336  error:
3337         nl80211_remove_monitor_interface(drv);
3338         return -1;
3339 }
3340
3341
3342 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3343
3344 static int wpa_driver_nl80211_hapd_send_eapol(
3345         void *priv, const u8 *addr, const u8 *data,
3346         size_t data_len, int encrypt, const u8 *own_addr)
3347 {
3348         struct i802_bss *bss = priv;
3349         struct wpa_driver_nl80211_data *drv = bss->drv;
3350         struct ieee80211_hdr *hdr;
3351         size_t len;
3352         u8 *pos;
3353         int res;
3354 #if 0 /* FIX */
3355         int qos = sta->flags & WPA_STA_WMM;
3356 #else
3357         int qos = 0;
3358 #endif
3359
3360         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3361                 data_len;
3362         hdr = os_zalloc(len);
3363         if (hdr == NULL) {
3364                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3365                        (unsigned long) len);
3366                 return -1;
3367         }
3368
3369         hdr->frame_control =
3370                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3371         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3372         if (encrypt)
3373                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3374 #if 0 /* To be enabled if qos determination is added above */
3375         if (qos) {
3376                 hdr->frame_control |=
3377                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3378         }
3379 #endif
3380
3381         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3382         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3383         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3384         pos = (u8 *) (hdr + 1);
3385
3386 #if 0 /* To be enabled if qos determination is added above */
3387         if (qos) {
3388                 /* add an empty QoS header if needed */
3389                 pos[0] = 0;
3390                 pos[1] = 0;
3391                 pos += 2;
3392         }
3393 #endif
3394
3395         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3396         pos += sizeof(rfc1042_header);
3397         WPA_PUT_BE16(pos, ETH_P_PAE);
3398         pos += 2;
3399         memcpy(pos, data, data_len);
3400
3401         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3402         if (res < 0) {
3403                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3404                            "failed: %d (%s)",
3405                            (unsigned long) len, errno, strerror(errno));
3406         }
3407         os_free(hdr);
3408
3409         return res;
3410 }
3411
3412
3413 static u32 sta_flags_nl80211(int flags)
3414 {
3415         u32 f = 0;
3416
3417         if (flags & WPA_STA_AUTHORIZED)
3418                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3419         if (flags & WPA_STA_WMM)
3420                 f |= BIT(NL80211_STA_FLAG_WME);
3421         if (flags & WPA_STA_SHORT_PREAMBLE)
3422                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3423         if (flags & WPA_STA_MFP)
3424                 f |= BIT(NL80211_STA_FLAG_MFP);
3425
3426         return f;
3427 }
3428
3429
3430 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3431                                             int total_flags,
3432                                             int flags_or, int flags_and)
3433 {
3434         struct i802_bss *bss = priv;
3435         struct wpa_driver_nl80211_data *drv = bss->drv;
3436         struct nl_msg *msg, *flags = NULL;
3437         struct nl80211_sta_flag_update upd;
3438
3439         msg = nlmsg_alloc();
3440         if (!msg)
3441                 return -ENOMEM;
3442
3443         flags = nlmsg_alloc();
3444         if (!flags) {
3445                 nlmsg_free(msg);
3446                 return -ENOMEM;
3447         }
3448
3449         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3450                     0, NL80211_CMD_SET_STATION, 0);
3451
3452         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3453                     if_nametoindex(bss->ifname));
3454         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3455
3456         /*
3457          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3458          * can be removed eventually.
3459          */
3460         if (total_flags & WPA_STA_AUTHORIZED)
3461                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3462
3463         if (total_flags & WPA_STA_WMM)
3464                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3465
3466         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3467                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3468
3469         if (total_flags & WPA_STA_MFP)
3470                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3471
3472         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3473                 goto nla_put_failure;
3474
3475         os_memset(&upd, 0, sizeof(upd));
3476         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3477         upd.set = sta_flags_nl80211(flags_or);
3478         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3479
3480         nlmsg_free(flags);
3481
3482         return send_and_recv_msgs(drv, msg, NULL, NULL);
3483  nla_put_failure:
3484         nlmsg_free(flags);
3485         return -ENOBUFS;
3486 }
3487
3488
3489 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3490                                  struct wpa_driver_associate_params *params)
3491 {
3492         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3493             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3494                 nl80211_remove_monitor_interface(drv);
3495                 return -1;
3496         }
3497
3498         /* TODO: setup monitor interface (and add code somewhere to remove this
3499          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3500
3501         return 0;
3502 }
3503
3504
3505 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3506 {
3507         struct nl_msg *msg;
3508         int ret = -1;
3509
3510         msg = nlmsg_alloc();
3511         if (!msg)
3512                 return -1;
3513
3514         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3515                     NL80211_CMD_LEAVE_IBSS, 0);
3516         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3517         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3518         msg = NULL;
3519         if (ret) {
3520                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3521                            "(%s)", ret, strerror(-ret));
3522                 goto nla_put_failure;
3523         }
3524
3525         ret = 0;
3526         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3527
3528 nla_put_failure:
3529         nlmsg_free(msg);
3530         return ret;
3531 }
3532
3533
3534 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3535                                    struct wpa_driver_associate_params *params)
3536 {
3537         struct nl_msg *msg;
3538         int ret = -1;
3539         int count = 0;
3540
3541         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3542
3543         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3544                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3545                            "IBSS mode");
3546                 return -1;
3547         }
3548
3549 retry:
3550         msg = nlmsg_alloc();
3551         if (!msg)
3552                 return -1;
3553
3554         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3555                     NL80211_CMD_JOIN_IBSS, 0);
3556         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3557
3558         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3559                 goto nla_put_failure;
3560
3561         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3562                           params->ssid, params->ssid_len);
3563         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3564                 params->ssid);
3565         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3566         drv->ssid_len = params->ssid_len;
3567
3568         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3569         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3570
3571         ret = nl80211_set_conn_keys(params, msg);
3572         if (ret)
3573                 goto nla_put_failure;
3574
3575         if (params->wpa_ie) {
3576                 wpa_hexdump(MSG_DEBUG,
3577                             "  * Extra IEs for Beacon/Probe Response frames",
3578                             params->wpa_ie, params->wpa_ie_len);
3579                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3580                         params->wpa_ie);
3581         }
3582
3583         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3584         msg = NULL;
3585         if (ret) {
3586                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3587                            ret, strerror(-ret));
3588                 count++;
3589                 if (ret == -EALREADY && count == 1) {
3590                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3591                                    "forced leave");
3592                         nl80211_leave_ibss(drv);
3593                         nlmsg_free(msg);
3594                         goto retry;
3595                 }
3596
3597                 goto nla_put_failure;
3598         }
3599         ret = 0;
3600         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3601
3602 nla_put_failure:
3603         nlmsg_free(msg);
3604         return ret;
3605 }
3606
3607
3608 static int wpa_driver_nl80211_connect(
3609         struct wpa_driver_nl80211_data *drv,
3610         struct wpa_driver_associate_params *params)
3611 {
3612         struct nl_msg *msg;
3613         enum nl80211_auth_type type;
3614         int ret = 0;
3615
3616         msg = nlmsg_alloc();
3617         if (!msg)
3618                 return -1;
3619
3620         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3621         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3622                     NL80211_CMD_CONNECT, 0);
3623
3624         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3625         if (params->bssid) {
3626                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3627                            MAC2STR(params->bssid));
3628                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3629         }
3630         if (params->freq) {
3631                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3632                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3633         }
3634         if (params->ssid) {
3635                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3636                                   params->ssid, params->ssid_len);
3637                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3638                         params->ssid);
3639                 if (params->ssid_len > sizeof(drv->ssid))
3640                         goto nla_put_failure;
3641                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3642                 drv->ssid_len = params->ssid_len;
3643         }
3644         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3645         if (params->wpa_ie)
3646                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3647                         params->wpa_ie);
3648
3649         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3650                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3651         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3652                 type = NL80211_AUTHTYPE_SHARED_KEY;
3653         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3654                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3655         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3656                 type = NL80211_AUTHTYPE_FT;
3657         else
3658                 goto nla_put_failure;
3659
3660         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3661         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3662
3663         if (params->wpa_ie && params->wpa_ie_len) {
3664                 enum nl80211_wpa_versions ver;
3665
3666                 if (params->wpa_ie[0] == WLAN_EID_RSN)
3667                         ver = NL80211_WPA_VERSION_2;
3668                 else
3669                         ver = NL80211_WPA_VERSION_1;
3670
3671                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
3672                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3673         }
3674
3675         if (params->pairwise_suite != CIPHER_NONE) {
3676                 int cipher;
3677
3678                 switch (params->pairwise_suite) {
3679                 case CIPHER_WEP40:
3680                         cipher = WLAN_CIPHER_SUITE_WEP40;
3681                         break;
3682                 case CIPHER_WEP104:
3683                         cipher = WLAN_CIPHER_SUITE_WEP104;
3684                         break;
3685                 case CIPHER_CCMP:
3686                         cipher = WLAN_CIPHER_SUITE_CCMP;
3687                         break;
3688                 case CIPHER_TKIP:
3689                 default:
3690                         cipher = WLAN_CIPHER_SUITE_TKIP;
3691                         break;
3692                 }
3693                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3694         }
3695
3696         if (params->group_suite != CIPHER_NONE) {
3697                 int cipher;
3698
3699                 switch (params->group_suite) {
3700                 case CIPHER_WEP40:
3701                         cipher = WLAN_CIPHER_SUITE_WEP40;
3702                         break;
3703                 case CIPHER_WEP104:
3704                         cipher = WLAN_CIPHER_SUITE_WEP104;
3705                         break;
3706                 case CIPHER_CCMP:
3707                         cipher = WLAN_CIPHER_SUITE_CCMP;
3708                         break;
3709                 case CIPHER_TKIP:
3710                 default:
3711                         cipher = WLAN_CIPHER_SUITE_TKIP;
3712                         break;
3713                 }
3714                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3715         }
3716
3717         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3718             params->key_mgmt_suite == KEY_MGMT_PSK) {
3719                 int mgmt = WLAN_AKM_SUITE_PSK;
3720
3721                 switch (params->key_mgmt_suite) {
3722                 case KEY_MGMT_802_1X:
3723                         mgmt = WLAN_AKM_SUITE_8021X;
3724                         break;
3725                 case KEY_MGMT_PSK:
3726                 default:
3727                         mgmt = WLAN_AKM_SUITE_PSK;
3728                         break;
3729                 }
3730                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3731         }
3732
3733         ret = nl80211_set_conn_keys(params, msg);
3734         if (ret)
3735                 goto nla_put_failure;
3736
3737         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3738         msg = NULL;
3739         if (ret) {
3740                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3741                            "(%s)", ret, strerror(-ret));
3742                 goto nla_put_failure;
3743         }
3744         ret = 0;
3745         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3746
3747 nla_put_failure:
3748         nlmsg_free(msg);
3749         return ret;
3750
3751 }
3752
3753
3754 static int wpa_driver_nl80211_associate(
3755         void *priv, struct wpa_driver_associate_params *params)
3756 {
3757         struct i802_bss *bss = priv;
3758         struct wpa_driver_nl80211_data *drv = bss->drv;
3759         int ret = -1;
3760         struct nl_msg *msg;
3761
3762         if (params->mode == IEEE80211_MODE_AP)
3763                 return wpa_driver_nl80211_ap(drv, params);
3764
3765         if (params->mode == IEEE80211_MODE_IBSS)
3766                 return wpa_driver_nl80211_ibss(drv, params);
3767
3768         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3769                 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
3770                         return -1;
3771                 return wpa_driver_nl80211_connect(drv, params);
3772         }
3773
3774         drv->associated = 0;
3775
3776         msg = nlmsg_alloc();
3777         if (!msg)
3778                 return -1;
3779
3780         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3781                    drv->ifindex);
3782         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3783                     NL80211_CMD_ASSOCIATE, 0);
3784
3785         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3786         if (params->bssid) {
3787                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3788                            MAC2STR(params->bssid));
3789                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3790         }
3791         if (params->freq) {
3792                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3793                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3794                 drv->assoc_freq = params->freq;
3795         } else
3796                 drv->assoc_freq = 0;
3797         if (params->ssid) {
3798                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3799                                   params->ssid, params->ssid_len);
3800                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3801                         params->ssid);
3802                 if (params->ssid_len > sizeof(drv->ssid))
3803                         goto nla_put_failure;
3804                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3805                 drv->ssid_len = params->ssid_len;
3806         }
3807         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3808         if (params->wpa_ie)
3809                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3810                         params->wpa_ie);
3811
3812 #ifdef CONFIG_IEEE80211W
3813         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3814                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3815 #endif /* CONFIG_IEEE80211W */
3816
3817         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3818
3819         if (params->prev_bssid) {
3820                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
3821                            MAC2STR(params->prev_bssid));
3822                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3823                         params->prev_bssid);
3824         }
3825
3826         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3827         msg = NULL;
3828         if (ret) {
3829                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3830                            "(%s)", ret, strerror(-ret));
3831                 nl80211_dump_scan(drv);
3832                 goto nla_put_failure;
3833         }
3834         ret = 0;
3835         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3836                    "successfully");
3837
3838 nla_put_failure:
3839         nlmsg_free(msg);
3840         return ret;
3841 }
3842
3843
3844 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3845                             int ifindex, int mode)
3846 {
3847         struct nl_msg *msg;
3848         int ret = -ENOBUFS;
3849
3850         msg = nlmsg_alloc();
3851         if (!msg)
3852                 return -ENOMEM;
3853
3854         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3855                     0, NL80211_CMD_SET_INTERFACE, 0);
3856         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3857         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3858
3859         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3860         if (!ret)
3861                 return 0;
3862 nla_put_failure:
3863         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3864                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
3865         return ret;
3866 }
3867
3868
3869 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3870 {
3871         struct i802_bss *bss = priv;
3872         struct wpa_driver_nl80211_data *drv = bss->drv;
3873         int ret = -1;
3874         int nlmode;
3875
3876         switch (mode) {
3877         case 0:
3878                 nlmode = NL80211_IFTYPE_STATION;
3879                 break;
3880         case 1:
3881                 nlmode = NL80211_IFTYPE_ADHOC;
3882                 break;
3883         case 2:
3884                 nlmode = NL80211_IFTYPE_AP;
3885                 break;
3886         default:
3887                 return -1;
3888         }
3889
3890         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3891                 drv->nlmode = nlmode;
3892                 ret = 0;
3893                 goto done;
3894         }
3895
3896         if (nlmode == drv->nlmode) {
3897                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3898                            "requested mode - ignore error");
3899                 ret = 0;
3900                 goto done; /* Already in the requested mode */
3901         }
3902
3903         /* mac80211 doesn't allow mode changes while the device is up, so
3904          * take the device down, try to set the mode again, and bring the
3905          * device back up.
3906          */
3907         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
3908                 /* Try to set the mode again while the interface is down */
3909                 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3910                 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
3911                         ret = -1;
3912         }
3913
3914         if (!ret) {
3915                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3916                            "interface is down");
3917                 drv->nlmode = nlmode;
3918         }
3919
3920 done:
3921         if (!ret && nlmode == NL80211_IFTYPE_AP) {
3922                 /* Setup additional AP mode functionality if needed */
3923                 if (drv->monitor_ifidx < 0 &&
3924                     nl80211_create_monitor_interface(drv))
3925                         return -1;
3926         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3927                 /* Remove additional AP mode functionality */
3928                 nl80211_remove_monitor_interface(drv);
3929                 bss->beacon_set = 0;
3930         }
3931
3932         if (ret)
3933                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3934                            "from %d failed", nlmode, drv->nlmode);
3935
3936         return ret;
3937 }
3938
3939
3940 static int wpa_driver_nl80211_get_capa(void *priv,
3941                                        struct wpa_driver_capa *capa)
3942 {
3943         struct i802_bss *bss = priv;
3944         struct wpa_driver_nl80211_data *drv = bss->drv;
3945         if (!drv->has_capability)
3946                 return -1;
3947         os_memcpy(capa, &drv->capa, sizeof(*capa));
3948         return 0;
3949 }
3950
3951
3952 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3953 {
3954         struct i802_bss *bss = priv;
3955         struct wpa_driver_nl80211_data *drv = bss->drv;
3956
3957         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3958                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3959         drv->operstate = state;
3960         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
3961                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
3962 }
3963
3964
3965 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3966 {
3967         struct i802_bss *bss = priv;
3968         struct wpa_driver_nl80211_data *drv = bss->drv;
3969         struct nl_msg *msg;
3970         struct nl80211_sta_flag_update upd;
3971
3972         msg = nlmsg_alloc();
3973         if (!msg)
3974                 return -ENOMEM;
3975
3976         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3977                     0, NL80211_CMD_SET_STATION, 0);
3978
3979         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3980                     if_nametoindex(bss->ifname));
3981         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3982
3983         os_memset(&upd, 0, sizeof(upd));
3984         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3985         if (authorized)
3986                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3987         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3988
3989         return send_and_recv_msgs(drv, msg, NULL, NULL);
3990  nla_put_failure:
3991         return -ENOBUFS;
3992 }
3993
3994
3995 #ifdef HOSTAPD
3996
3997 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3998 {
3999         int i;
4000         int *old;
4001
4002         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4003                    ifidx);
4004         for (i = 0; i < drv->num_if_indices; i++) {
4005                 if (drv->if_indices[i] == 0) {
4006                         drv->if_indices[i] = ifidx;
4007                         return;
4008                 }
4009         }
4010
4011         if (drv->if_indices != drv->default_if_indices)
4012                 old = drv->if_indices;
4013         else
4014                 old = NULL;
4015
4016         drv->if_indices = os_realloc(old,
4017                                      sizeof(int) * (drv->num_if_indices + 1));
4018         if (!drv->if_indices) {
4019                 if (!old)
4020                         drv->if_indices = drv->default_if_indices;
4021                 else
4022                         drv->if_indices = old;
4023                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4024                            "interfaces");
4025                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4026                 return;
4027         }
4028         drv->if_indices[drv->num_if_indices] = ifidx;
4029         drv->num_if_indices++;
4030 }
4031
4032
4033 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4034 {
4035         int i;
4036
4037         for (i = 0; i < drv->num_if_indices; i++) {
4038                 if (drv->if_indices[i] == ifidx) {
4039                         drv->if_indices[i] = 0;
4040                         break;
4041                 }
4042         }
4043 }
4044
4045
4046 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4047 {
4048         int i;
4049
4050         for (i = 0; i < drv->num_if_indices; i++)
4051                 if (drv->if_indices[i] == ifidx)
4052                         return 1;
4053
4054         return 0;
4055 }
4056
4057
4058 static inline int min_int(int a, int b)
4059 {
4060         if (a < b)
4061                 return a;
4062         return b;
4063 }
4064
4065
4066 static int get_key_handler(struct nl_msg *msg, void *arg)
4067 {
4068         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4069         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4070
4071         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4072                   genlmsg_attrlen(gnlh, 0), NULL);
4073
4074         /*
4075          * TODO: validate the key index and mac address!
4076          * Otherwise, there's a race condition as soon as
4077          * the kernel starts sending key notifications.
4078          */
4079
4080         if (tb[NL80211_ATTR_KEY_SEQ])
4081                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4082                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4083         return NL_SKIP;
4084 }
4085
4086
4087 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4088                            int idx, u8 *seq)
4089 {
4090         struct i802_bss *bss = priv;
4091         struct wpa_driver_nl80211_data *drv = bss->drv;
4092         struct nl_msg *msg;
4093
4094         msg = nlmsg_alloc();
4095         if (!msg)
4096                 return -ENOMEM;
4097
4098         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4099                     0, NL80211_CMD_GET_KEY, 0);
4100
4101         if (addr)
4102                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4103         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4104         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4105
4106         memset(seq, 0, 6);
4107
4108         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4109  nla_put_failure:
4110         return -ENOBUFS;
4111 }
4112
4113
4114 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4115                               int mode)
4116 {
4117         struct i802_bss *bss = priv;
4118         struct wpa_driver_nl80211_data *drv = bss->drv;
4119         struct nl_msg *msg;
4120         u8 rates[NL80211_MAX_SUPP_RATES];
4121         u8 rates_len = 0;
4122         int i;
4123
4124         msg = nlmsg_alloc();
4125         if (!msg)
4126                 return -ENOMEM;
4127
4128         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4129                     NL80211_CMD_SET_BSS, 0);
4130
4131         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4132                 rates[rates_len++] = basic_rates[i] / 5;
4133
4134         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4135
4136         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4137
4138         return send_and_recv_msgs(drv, msg, NULL, NULL);
4139  nla_put_failure:
4140         return -ENOBUFS;
4141 }
4142
4143
4144 /* Set kernel driver on given frequency (MHz) */
4145 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4146 {
4147         struct i802_bss *bss = priv;
4148         struct wpa_driver_nl80211_data *drv = bss->drv;
4149         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4150                                            freq->sec_channel_offset);
4151 }
4152
4153
4154 static int i802_set_rts(void *priv, int rts)
4155 {
4156         struct i802_bss *bss = priv;
4157         struct wpa_driver_nl80211_data *drv = bss->drv;
4158         struct nl_msg *msg;
4159         int ret = -ENOBUFS;
4160         u32 val;
4161
4162         msg = nlmsg_alloc();
4163         if (!msg)
4164                 return -ENOMEM;
4165
4166         if (rts >= 2347)
4167                 val = (u32) -1;
4168         else
4169                 val = rts;
4170
4171         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4172                     0, NL80211_CMD_SET_WIPHY, 0);
4173         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4174         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4175
4176         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4177         if (!ret)
4178                 return 0;
4179 nla_put_failure:
4180         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4181                    "%d (%s)", rts, ret, strerror(-ret));
4182         return ret;
4183 }
4184
4185
4186 static int i802_set_frag(void *priv, int frag)
4187 {
4188         struct i802_bss *bss = priv;
4189         struct wpa_driver_nl80211_data *drv = bss->drv;
4190         struct nl_msg *msg;
4191         int ret = -ENOBUFS;
4192         u32 val;
4193
4194         msg = nlmsg_alloc();
4195         if (!msg)
4196                 return -ENOMEM;
4197
4198         if (frag >= 2346)
4199                 val = (u32) -1;
4200         else
4201                 val = frag;
4202
4203         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4204                     0, NL80211_CMD_SET_WIPHY, 0);
4205         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4206         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4207
4208         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4209         if (!ret)
4210                 return 0;
4211 nla_put_failure:
4212         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4213                    "%d: %d (%s)", frag, ret, strerror(-ret));
4214         return ret;
4215 }
4216
4217
4218 static int i802_flush(void *priv)
4219 {
4220         struct i802_bss *bss = priv;
4221         struct wpa_driver_nl80211_data *drv = bss->drv;
4222         struct nl_msg *msg;
4223
4224         msg = nlmsg_alloc();
4225         if (!msg)
4226                 return -1;
4227
4228         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4229                     0, NL80211_CMD_DEL_STATION, 0);
4230
4231         /*
4232          * XXX: FIX! this needs to flush all VLANs too
4233          */
4234         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4235                     if_nametoindex(bss->ifname));
4236
4237         return send_and_recv_msgs(drv, msg, NULL, NULL);
4238  nla_put_failure:
4239         return -ENOBUFS;
4240 }
4241
4242
4243 static int get_sta_handler(struct nl_msg *msg, void *arg)
4244 {
4245         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4246         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4247         struct hostap_sta_driver_data *data = arg;
4248         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4249         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4250                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4251                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4252                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4253                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4254                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4255         };
4256
4257         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4258                   genlmsg_attrlen(gnlh, 0), NULL);
4259
4260         /*
4261          * TODO: validate the interface and mac address!
4262          * Otherwise, there's a race condition as soon as
4263          * the kernel starts sending station notifications.
4264          */
4265
4266         if (!tb[NL80211_ATTR_STA_INFO]) {
4267                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4268                 return NL_SKIP;
4269         }
4270         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4271                              tb[NL80211_ATTR_STA_INFO],
4272                              stats_policy)) {
4273                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4274                 return NL_SKIP;
4275         }
4276
4277         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4278                 data->inactive_msec =
4279                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4280         if (stats[NL80211_STA_INFO_RX_BYTES])
4281                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4282         if (stats[NL80211_STA_INFO_TX_BYTES])
4283                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4284         if (stats[NL80211_STA_INFO_RX_PACKETS])
4285                 data->rx_packets =
4286                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4287         if (stats[NL80211_STA_INFO_TX_PACKETS])
4288                 data->tx_packets =
4289                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4290
4291         return NL_SKIP;
4292 }
4293
4294 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4295                               const u8 *addr)
4296 {
4297         struct i802_bss *bss = priv;
4298         struct wpa_driver_nl80211_data *drv = bss->drv;
4299         struct nl_msg *msg;
4300
4301         os_memset(data, 0, sizeof(*data));
4302         msg = nlmsg_alloc();
4303         if (!msg)
4304                 return -ENOMEM;
4305
4306         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4307                     0, NL80211_CMD_GET_STATION, 0);
4308
4309         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4310         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4311
4312         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4313  nla_put_failure:
4314         return -ENOBUFS;
4315 }
4316
4317
4318 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4319                                     int cw_min, int cw_max, int burst_time)
4320 {
4321         struct i802_bss *bss = priv;
4322         struct wpa_driver_nl80211_data *drv = bss->drv;
4323         struct nl_msg *msg;
4324         struct nlattr *txq, *params;
4325
4326         msg = nlmsg_alloc();
4327         if (!msg)
4328                 return -1;
4329
4330         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4331                     0, NL80211_CMD_SET_WIPHY, 0);
4332
4333         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4334
4335         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4336         if (!txq)
4337                 goto nla_put_failure;
4338
4339         /* We are only sending parameters for a single TXQ at a time */
4340         params = nla_nest_start(msg, 1);
4341         if (!params)
4342                 goto nla_put_failure;
4343
4344         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4345         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4346          * 32 usec, so need to convert the value here. */
4347         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4348         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4349         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4350         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4351
4352         nla_nest_end(msg, params);
4353
4354         nla_nest_end(msg, txq);
4355
4356         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4357                 return 0;
4358  nla_put_failure:
4359         return -1;
4360 }
4361
4362
4363 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4364 {
4365         struct i802_bss *bss = priv;
4366         struct wpa_driver_nl80211_data *drv = bss->drv;
4367         struct nl_msg *msg;
4368
4369         msg = nlmsg_alloc();
4370         if (!msg)
4371                 return -ENOMEM;
4372
4373         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4374                     NL80211_CMD_SET_BSS, 0);
4375
4376         if (cts >= 0)
4377                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4378         if (preamble >= 0)
4379                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4380         if (slot >= 0)
4381                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4382
4383         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4384
4385         return send_and_recv_msgs(drv, msg, NULL, NULL);
4386  nla_put_failure:
4387         return -ENOBUFS;
4388 }
4389
4390
4391 static int i802_set_cts_protect(void *priv, int value)
4392 {
4393         return i802_set_bss(priv, value, -1, -1);
4394 }
4395
4396
4397 static int i802_set_preamble(void *priv, int value)
4398 {
4399         return i802_set_bss(priv, -1, value, -1);
4400 }
4401
4402
4403 static int i802_set_short_slot_time(void *priv, int value)
4404 {
4405         return i802_set_bss(priv, -1, -1, value);
4406 }
4407
4408
4409 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4410                              const char *ifname, int vlan_id)
4411 {
4412         struct i802_bss *bss = priv;
4413         struct wpa_driver_nl80211_data *drv = bss->drv;
4414         struct nl_msg *msg;
4415
4416         msg = nlmsg_alloc();
4417         if (!msg)
4418                 return -ENOMEM;
4419
4420         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4421                     0, NL80211_CMD_SET_STATION, 0);
4422
4423         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4424                     if_nametoindex(bss->ifname));
4425         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4426         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4427                     if_nametoindex(ifname));
4428
4429         return send_and_recv_msgs(drv, msg, NULL, NULL);
4430  nla_put_failure:
4431         return -ENOBUFS;
4432 }
4433
4434
4435 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4436 {
4437         struct i802_bss *bss = priv;
4438         struct wpa_driver_nl80211_data *drv = bss->drv;
4439         char name[IFNAMSIZ + 1];
4440
4441         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4442         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4443                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4444         if (val) {
4445                 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4446                                          NULL, 1) < 0)
4447                         return -1;
4448                 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4449                 return i802_set_sta_vlan(priv, addr, name, 0);
4450         } else {
4451                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4452                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4453                                                     name);
4454         }
4455 }
4456
4457
4458 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4459 {
4460         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4461         struct sockaddr_ll lladdr;
4462         unsigned char buf[3000];
4463         int len;
4464         socklen_t fromlen = sizeof(lladdr);
4465
4466         len = recvfrom(sock, buf, sizeof(buf), 0,
4467                        (struct sockaddr *)&lladdr, &fromlen);
4468         if (len < 0) {
4469                 perror("recv");
4470                 return;
4471         }
4472
4473         if (have_ifidx(drv, lladdr.sll_ifindex))
4474                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4475 }
4476
4477
4478 static int i802_get_inact_sec(void *priv, const u8 *addr)
4479 {
4480         struct hostap_sta_driver_data data;
4481         int ret;
4482
4483         data.inactive_msec = (unsigned long) -1;
4484         ret = i802_read_sta_data(priv, &data, addr);
4485         if (ret || data.inactive_msec == (unsigned long) -1)
4486                 return -1;
4487         return data.inactive_msec / 1000;
4488 }
4489
4490
4491 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4492 {
4493 #if 0
4494         /* TODO */
4495 #endif
4496         return 0;
4497 }
4498
4499
4500 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4501                            int reason)
4502 {
4503         struct i802_bss *bss = priv;
4504         struct ieee80211_mgmt mgmt;
4505
4506         memset(&mgmt, 0, sizeof(mgmt));
4507         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4508                                           WLAN_FC_STYPE_DEAUTH);
4509         memcpy(mgmt.da, addr, ETH_ALEN);
4510         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4511         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4512         mgmt.u.deauth.reason_code = host_to_le16(reason);
4513         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4514                                             IEEE80211_HDRLEN +
4515                                             sizeof(mgmt.u.deauth));
4516 }
4517
4518
4519 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4520                              int reason)
4521 {
4522         struct i802_bss *bss = priv;
4523         struct ieee80211_mgmt mgmt;
4524
4525         memset(&mgmt, 0, sizeof(mgmt));
4526         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4527                                           WLAN_FC_STYPE_DISASSOC);
4528         memcpy(mgmt.da, addr, ETH_ALEN);
4529         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4530         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4531         mgmt.u.disassoc.reason_code = host_to_le16(reason);
4532         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4533                                             IEEE80211_HDRLEN +
4534                                             sizeof(mgmt.u.disassoc));
4535 }
4536
4537
4538 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4539                              const char *brname, const char *ifname)
4540 {
4541         int ifindex;
4542         char in_br[IFNAMSIZ];
4543
4544         os_strlcpy(drv->brname, brname, IFNAMSIZ);
4545         ifindex = if_nametoindex(brname);
4546         if (ifindex == 0) {
4547                 /*
4548                  * Bridge was configured, but the bridge device does
4549                  * not exist. Try to add it now.
4550                  */
4551                 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4552                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4553                                    "bridge interface %s: %s",
4554                                    brname, strerror(errno));
4555                         return -1;
4556                 }
4557                 drv->added_bridge = 1;
4558                 add_ifidx(drv, if_nametoindex(brname));
4559         }
4560
4561         if (linux_br_get(in_br, ifname) == 0) {
4562                 if (os_strcmp(in_br, brname) == 0)
4563                         return 0; /* already in the bridge */
4564
4565                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4566                            "bridge %s", ifname, in_br);
4567                 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4568                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
4569                                    "remove interface %s from bridge "
4570                                    "%s: %s",
4571                                    ifname, brname, strerror(errno));
4572                         return -1;
4573                 }
4574         }
4575
4576         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4577                    ifname, brname);
4578         if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4579                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4580                            "into bridge %s: %s",
4581                            ifname, brname, strerror(errno));
4582                 return -1;
4583         }
4584         drv->added_if_into_bridge = 1;
4585
4586         return 0;
4587 }
4588
4589
4590 static void *i802_init(struct hostapd_data *hapd,
4591                        struct wpa_init_params *params)
4592 {
4593         struct wpa_driver_nl80211_data *drv;
4594         struct i802_bss *bss;
4595         size_t i;
4596         char brname[IFNAMSIZ];
4597         int ifindex, br_ifindex;
4598         int br_added = 0;
4599
4600         bss = wpa_driver_nl80211_init(hapd, params->ifname);
4601         if (bss == NULL)
4602                 return NULL;
4603
4604         drv = bss->drv;
4605         if (linux_br_get(brname, params->ifname) == 0) {
4606                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4607                            params->ifname, brname);
4608                 br_ifindex = if_nametoindex(brname);
4609         } else {
4610                 brname[0] = '\0';
4611                 br_ifindex = 0;
4612         }
4613
4614         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4615         drv->if_indices = drv->default_if_indices;
4616         for (i = 0; i < params->num_bridge; i++) {
4617                 if (params->bridge[i]) {
4618                         ifindex = if_nametoindex(params->bridge[i]);
4619                         if (ifindex)
4620                                 add_ifidx(drv, ifindex);
4621                         if (ifindex == br_ifindex)
4622                                 br_added = 1;
4623                 }
4624         }
4625         if (!br_added && br_ifindex &&
4626             (params->num_bridge == 0 || !params->bridge[0]))
4627                 add_ifidx(drv, br_ifindex);
4628
4629         /* start listening for EAPOL on the default AP interface */
4630         add_ifidx(drv, drv->ifindex);
4631
4632         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
4633                 goto failed;
4634
4635         if (params->bssid) {
4636                 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
4637                                        params->bssid))
4638                         goto failed;
4639         }
4640
4641         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
4642                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4643                            "into AP mode", bss->ifname);
4644                 goto failed;
4645         }
4646
4647         if (params->num_bridge && params->bridge[0] &&
4648             i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4649                 goto failed;
4650
4651         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4652                 goto failed;
4653
4654         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4655         if (drv->eapol_sock < 0) {
4656                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4657                 goto failed;
4658         }
4659
4660         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4661         {
4662                 printf("Could not register read socket for eapol\n");
4663                 goto failed;
4664         }
4665
4666         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
4667                 goto failed;
4668
4669         return bss;
4670
4671 failed:
4672         nl80211_remove_monitor_interface(drv);
4673         if (drv->ioctl_sock >= 0)
4674                 close(drv->ioctl_sock);
4675
4676         genl_family_put(drv->nl80211);
4677         nl_cache_free(drv->nl_cache);
4678         nl_handle_destroy(drv->nl_handle);
4679         nl_cb_put(drv->nl_cb);
4680
4681         os_free(drv);
4682         return NULL;
4683 }
4684
4685
4686 static void i802_deinit(void *priv)
4687 {
4688         wpa_driver_nl80211_deinit(priv);
4689 }
4690
4691 #endif /* HOSTAPD */
4692
4693
4694 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4695         enum wpa_driver_if_type type)
4696 {
4697         switch (type) {
4698         case WPA_IF_STATION:
4699                 return NL80211_IFTYPE_STATION;
4700         case WPA_IF_AP_VLAN:
4701                 return NL80211_IFTYPE_AP_VLAN;
4702         case WPA_IF_AP_BSS:
4703                 return NL80211_IFTYPE_AP;
4704         }
4705         return -1;
4706 }
4707
4708
4709 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
4710                                      const char *ifname, const u8 *addr,
4711                                      void *bss_ctx, void **drv_priv)
4712 {
4713         struct i802_bss *bss = priv;
4714         struct wpa_driver_nl80211_data *drv = bss->drv;
4715         int ifidx;
4716 #ifdef HOSTAPD
4717         struct i802_bss *new_bss = NULL;
4718
4719         if (type == WPA_IF_AP_BSS) {
4720                 new_bss = os_zalloc(sizeof(*new_bss));
4721                 if (new_bss == NULL)
4722                         return -1;
4723         }
4724 #endif /* HOSTAPD */
4725
4726         ifidx = nl80211_create_iface(drv, ifname,
4727                                      wpa_driver_nl80211_if_type(type), addr,
4728                                      0);
4729         if (ifidx < 0) {
4730 #ifdef HOSTAPD
4731                 os_free(new_bss);
4732 #endif /* HOSTAPD */
4733                 return -1;
4734         }
4735
4736 #ifdef HOSTAPD
4737         if (type == WPA_IF_AP_BSS) {
4738                 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4739                         nl80211_remove_iface(drv, ifidx);
4740                         os_free(new_bss);
4741                         return -1;
4742                 }
4743                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4744                 new_bss->ifindex = ifidx;
4745                 new_bss->drv = drv;
4746                 new_bss->next = drv->first_bss.next;
4747                 drv->first_bss.next = new_bss;
4748                 if (drv_priv)
4749                         *drv_priv = new_bss;
4750         }
4751 #endif /* HOSTAPD */
4752
4753         return 0;
4754 }
4755
4756
4757 static int wpa_driver_nl80211_if_remove(void *priv,
4758                                         enum wpa_driver_if_type type,
4759                                         const char *ifname)
4760 {
4761         struct i802_bss *bss = priv;
4762         struct wpa_driver_nl80211_data *drv = bss->drv;
4763         int ifindex = if_nametoindex(ifname);
4764
4765         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4766                    __func__, type, ifname, ifindex);
4767         if (ifindex <= 0)
4768                 return -1;
4769         nl80211_remove_iface(drv, ifindex);
4770
4771 #ifdef HOSTAPD
4772         if (type != WPA_IF_AP_BSS)
4773                 return 0;
4774
4775         if (bss != &drv->first_bss) {
4776                 struct i802_bss *tbss = &drv->first_bss;
4777
4778                 while (tbss) {
4779                         if (tbss->next != bss)
4780                                 continue;
4781
4782                         tbss->next = bss->next;
4783                         os_free(bss);
4784                         break;
4785                 }
4786         }
4787 #endif /* HOSTAPD */
4788
4789         return 0;
4790 }
4791
4792
4793 static int cookie_handler(struct nl_msg *msg, void *arg)
4794 {
4795         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4796         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4797         u64 *cookie = arg;
4798         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4799                   genlmsg_attrlen(gnlh, 0), NULL);
4800         if (tb[NL80211_ATTR_COOKIE])
4801                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4802         return NL_SKIP;
4803 }
4804
4805
4806 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
4807                                           const u8 *dst, const u8 *src,
4808                                           const u8 *bssid,
4809                                           const u8 *data, size_t data_len)
4810 {
4811         struct i802_bss *bss = priv;
4812         struct wpa_driver_nl80211_data *drv = bss->drv;
4813         int ret = -1;
4814         struct nl_msg *msg;
4815         u8 *buf;
4816         struct ieee80211_hdr *hdr;
4817         u64 cookie;
4818
4819         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
4820                    drv->ifindex);
4821
4822         buf = os_zalloc(24 + data_len);
4823         if (buf == NULL)
4824                 return ret;
4825         os_memcpy(buf + 24, data, data_len);
4826         hdr = (struct ieee80211_hdr *) buf;
4827         hdr->frame_control =
4828                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
4829         os_memcpy(hdr->addr1, dst, ETH_ALEN);
4830         os_memcpy(hdr->addr2, src, ETH_ALEN);
4831         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
4832
4833         if (drv->nlmode == NL80211_IFTYPE_AP) {
4834                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
4835                 os_free(buf);
4836                 return ret;
4837         }
4838
4839         msg = nlmsg_alloc();
4840         if (!msg)
4841                 return -1;
4842
4843         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4844                     NL80211_CMD_ACTION, 0);
4845
4846         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4847         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4848         NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
4849         os_free(buf);
4850
4851         cookie = 0;
4852         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4853         msg = NULL;
4854         if (ret) {
4855                 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
4856                            "(%s)", ret, strerror(-ret));
4857                 goto nla_put_failure;
4858         }
4859         wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
4860                    "cookie 0x%llx", (long long unsigned int) cookie);
4861         drv->send_action_cookie = cookie;
4862         drv->pending_send_action = 1;
4863         ret = 0;
4864
4865 nla_put_failure:
4866         nlmsg_free(msg);
4867         return ret;
4868 }
4869
4870
4871 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4872                                                 unsigned int duration)
4873 {
4874         struct i802_bss *bss = priv;
4875         struct wpa_driver_nl80211_data *drv = bss->drv;
4876         struct nl_msg *msg;
4877         int ret;
4878         u64 cookie;
4879
4880         msg = nlmsg_alloc();
4881         if (!msg)
4882                 return -1;
4883
4884         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4885                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4886
4887         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4888         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4889         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4890
4891         cookie = 0;
4892         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4893         if (ret == 0) {
4894                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4895                            "0x%llx for freq=%u MHz duration=%u",
4896                            (long long unsigned int) cookie, freq, duration);
4897                 drv->remain_on_chan_cookie = cookie;
4898                 return 0;
4899         }
4900         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4901                    "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4902 nla_put_failure:
4903         return -1;
4904 }
4905
4906
4907 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4908 {
4909         struct i802_bss *bss = priv;
4910         struct wpa_driver_nl80211_data *drv = bss->drv;
4911         struct nl_msg *msg;
4912         int ret;
4913
4914         if (!drv->pending_remain_on_chan) {
4915                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4916                            "to cancel");
4917                 return -1;
4918         }
4919
4920         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4921                    "0x%llx",
4922                    (long long unsigned int) drv->remain_on_chan_cookie);
4923
4924         msg = nlmsg_alloc();
4925         if (!msg)
4926                 return -1;
4927
4928         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4929                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4930
4931         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4932         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4933
4934         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4935         if (ret == 0)
4936                 return 0;
4937         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4938                    "%d (%s)", ret, strerror(-ret));
4939 nla_put_failure:
4940         return -1;
4941 }
4942
4943
4944 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4945                                                         void *timeout_ctx)
4946 {
4947         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4948         if (drv->monitor_ifidx < 0)
4949                 return; /* monitor interface already removed */
4950
4951         if (drv->nlmode != NL80211_IFTYPE_STATION)
4952                 return; /* not in station mode anymore */
4953
4954         if (drv->probe_req_report)
4955                 return; /* reporting enabled */
4956
4957         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4958                    "Probe Request reporting needed anymore");
4959         nl80211_remove_monitor_interface(drv);
4960 }
4961
4962
4963 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4964 {
4965         struct i802_bss *bss = priv;
4966         struct wpa_driver_nl80211_data *drv = bss->drv;
4967
4968         if (drv->nlmode != NL80211_IFTYPE_STATION) {
4969                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
4970                            "allowed in station mode (iftype=%d)",
4971                            drv->nlmode);
4972                 return -1;
4973         }
4974         drv->probe_req_report = report;
4975
4976         if (report) {
4977                 eloop_cancel_timeout(
4978                         wpa_driver_nl80211_probe_req_report_timeout,
4979                         drv, NULL);
4980                 if (drv->monitor_ifidx < 0 &&
4981                     nl80211_create_monitor_interface(drv))
4982                         return -1;
4983         } else {
4984                 /*
4985                  * It takes a while to remove the monitor interface, so try to
4986                  * avoid doing this if it is needed again shortly. Instead,
4987                  * schedule the interface to be removed later if no need for it
4988                  * is seen.
4989                  */
4990                 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
4991                            "to be removed after 10 seconds of no use");
4992                 eloop_register_timeout(
4993                         10, 0, wpa_driver_nl80211_probe_req_report_timeout,
4994                         drv, NULL);
4995         }
4996
4997         return 0;
4998 }
4999
5000
5001 static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr,
5002                                                    char *ifname)
5003 {
5004         struct i802_bss *bss = priv;
5005         struct wpa_driver_nl80211_data *drv = bss->drv;
5006
5007         if (ifname)
5008                 ifname[0] = '\0';
5009
5010         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, addr) < 0)
5011                 return -1;
5012
5013         if (addr[0] & 0x02) {
5014                 /* TODO: add support for generating multiple addresses */
5015                 addr[0] ^= 0x80;
5016         } else
5017                 addr[0] = 0x02; /* locally administered */
5018
5019         return 0;
5020 }
5021
5022
5023 static void wpa_driver_nl80211_release_interface_addr(void *priv,
5024                                                       const u8 *addr)
5025 {
5026         /* TODO: keep list of allocated address and release them here */
5027 }
5028
5029
5030 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5031                                      int ifindex, int disabled)
5032 {
5033         struct nl_msg *msg;
5034         struct nlattr *bands, *band;
5035         int ret;
5036
5037         msg = nlmsg_alloc();
5038         if (!msg)
5039                 return -1;
5040
5041         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5042                     NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5043         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5044
5045         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5046         if (!bands)
5047                 goto nla_put_failure;
5048
5049         /*
5050          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5051          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5052          * rates. All 5 GHz rates are left enabled.
5053          */
5054         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5055         if (!band)
5056                 goto nla_put_failure;
5057         NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5058                 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5059         nla_nest_end(msg, band);
5060
5061         nla_nest_end(msg, bands);
5062
5063         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5064         msg = NULL;
5065         if (ret) {
5066                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5067                            "(%s)", ret, strerror(-ret));
5068         }
5069
5070         return ret;
5071
5072 nla_put_failure:
5073         nlmsg_free(msg);
5074         return -1;
5075 }
5076
5077
5078 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5079 {
5080         struct i802_bss *bss = priv;
5081         struct wpa_driver_nl80211_data *drv = bss->drv;
5082         drv->disable_11b_rates = disabled;
5083         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5084 }
5085
5086
5087 static int wpa_driver_nl80211_deinit_ap(void *priv)
5088 {
5089         struct i802_bss *bss = priv;
5090         struct wpa_driver_nl80211_data *drv = bss->drv;
5091         if (drv->nlmode != NL80211_IFTYPE_AP)
5092                 return -1;
5093         wpa_driver_nl80211_del_beacon(drv);
5094         return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5095 }
5096
5097
5098 static void wpa_driver_nl80211_resume(void *priv)
5099 {
5100         struct i802_bss *bss = priv;
5101         struct wpa_driver_nl80211_data *drv = bss->drv;
5102         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5103                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5104                            "resume event");
5105         }
5106 }
5107
5108
5109 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5110                                   const u8 *ies, size_t ies_len)
5111 {
5112         struct i802_bss *bss = priv;
5113         struct wpa_driver_nl80211_data *drv = bss->drv;
5114         int ret;
5115         u8 *data, *pos;
5116         size_t data_len;
5117         u8 own_addr[ETH_ALEN];
5118
5119         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5120                 return -1;
5121
5122         if (action != 1) {
5123                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5124                            "action %d", action);
5125                 return -1;
5126         }
5127
5128         /*
5129          * Action frame payload:
5130          * Category[1] = 6 (Fast BSS Transition)
5131          * Action[1] = 1 (Fast BSS Transition Request)
5132          * STA Address
5133          * Target AP Address
5134          * FT IEs
5135          */
5136
5137         data_len = 2 + 2 * ETH_ALEN + ies_len;
5138         data = os_malloc(data_len);
5139         if (data == NULL)
5140                 return -1;
5141         pos = data;
5142         *pos++ = 0x06; /* FT Action category */
5143         *pos++ = action;
5144         os_memcpy(pos, own_addr, ETH_ALEN);
5145         pos += ETH_ALEN;
5146         os_memcpy(pos, target_ap, ETH_ALEN);
5147         pos += ETH_ALEN;
5148         os_memcpy(pos, ies, ies_len);
5149
5150         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5151                                              own_addr, drv->bssid,
5152                                              data, data_len);
5153         os_free(data);
5154
5155         return ret;
5156 }
5157
5158
5159 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5160         .name = "nl80211",
5161         .desc = "Linux nl80211/cfg80211",
5162         .get_bssid = wpa_driver_nl80211_get_bssid,
5163         .get_ssid = wpa_driver_nl80211_get_ssid,
5164         .set_key = wpa_driver_nl80211_set_key,
5165         .scan2 = wpa_driver_nl80211_scan,
5166         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5167         .deauthenticate = wpa_driver_nl80211_deauthenticate,
5168         .disassociate = wpa_driver_nl80211_disassociate,
5169         .authenticate = wpa_driver_nl80211_authenticate,
5170         .associate = wpa_driver_nl80211_associate,
5171         .init = wpa_driver_nl80211_init,
5172         .deinit = wpa_driver_nl80211_deinit,
5173         .get_capa = wpa_driver_nl80211_get_capa,
5174         .set_operstate = wpa_driver_nl80211_set_operstate,
5175         .set_supp_port = wpa_driver_nl80211_set_supp_port,
5176         .set_country = wpa_driver_nl80211_set_country,
5177         .set_beacon = wpa_driver_nl80211_set_beacon,
5178         .if_add = wpa_driver_nl80211_if_add,
5179         .if_remove = wpa_driver_nl80211_if_remove,
5180         .send_mlme = wpa_driver_nl80211_send_mlme,
5181         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5182         .sta_add = wpa_driver_nl80211_sta_add,
5183         .sta_remove = wpa_driver_nl80211_sta_remove,
5184         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5185         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5186 #ifdef HOSTAPD
5187         .hapd_init = i802_init,
5188         .hapd_deinit = i802_deinit,
5189         .get_seqnum = i802_get_seqnum,
5190         .flush = i802_flush,
5191         .read_sta_data = i802_read_sta_data,
5192         .sta_deauth = i802_sta_deauth,
5193         .sta_disassoc = i802_sta_disassoc,
5194         .get_inact_sec = i802_get_inact_sec,
5195         .sta_clear_stats = i802_sta_clear_stats,
5196         .set_freq = i802_set_freq,
5197         .set_rts = i802_set_rts,
5198         .set_frag = i802_set_frag,
5199         .set_rate_sets = i802_set_rate_sets,
5200         .set_cts_protect = i802_set_cts_protect,
5201         .set_preamble = i802_set_preamble,
5202         .set_short_slot_time = i802_set_short_slot_time,
5203         .set_tx_queue_params = i802_set_tx_queue_params,
5204         .set_sta_vlan = i802_set_sta_vlan,
5205         .set_wds_sta = i802_set_wds_sta,
5206 #endif /* HOSTAPD */
5207         .send_action = wpa_driver_nl80211_send_action,
5208         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5209         .cancel_remain_on_channel =
5210         wpa_driver_nl80211_cancel_remain_on_channel,
5211         .probe_req_report = wpa_driver_nl80211_probe_req_report,
5212         .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
5213         .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
5214         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5215         .deinit_ap = wpa_driver_nl80211_deinit_ap,
5216         .resume = wpa_driver_nl80211_resume,
5217         .send_ft_action = nl80211_send_ft_action,
5218 };