src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * Alternatively, this software may be distributed under the terms of BSD
  14  * license.
  15  *
  16  * See README and COPYING for more details.
  17  */
  18
  19 #include "includes.h"
  20 #include <sys/ioctl.h>
  21 #include <net/if.h>
  22 #include <netlink/genl/genl.h>
  23 #include <netlink/genl/family.h>
  24 #include <netlink/genl/ctrl.h>
  25 #include <netpacket/packet.h>
  26 #include <linux/filter.h>
  27 #include "nl80211_copy.h"
  28
  29 #include "common.h"
  30 #include "eloop.h"
  31 #include "common/ieee802_11_defs.h"
  32 #include "netlink.h"
  33 #include "linux_ioctl.h"
  34 #include "radiotap.h"
  35 #include "radiotap_iter.h"
  36 #include "driver.h"
  37
  38 #ifdef CONFIG_LIBNL20
  39 /* libnl 2.0 compatibility code */
  40 #define nl_handle nl_sock
  41 #define nl_handle_alloc_cb nl_socket_alloc_cb
  42 #define nl_handle_destroy nl_socket_free
  43 #endif /* CONFIG_LIBNL20 */
  44
  45
  46 #ifndef IFF_LOWER_UP
  47 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
  48 #endif
  49 #ifndef IFF_DORMANT
  50 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
  51 #endif
  52
  53 #ifndef IF_OPER_DORMANT
  54 #define IF_OPER_DORMANT 5
  55 #endif
  56 #ifndef IF_OPER_UP
  57 #define IF_OPER_UP 6
  58 #endif
  59
  60 struct i802_bss {
  61         struct wpa_driver_nl80211_data *drv;
  62         struct i802_bss *next;
  63         int ifindex;
  64         char ifname[IFNAMSIZ + 1];
  65         unsigned int beacon_set:1;
  66 };
  67
  68 struct wpa_driver_nl80211_data {
  69         void *ctx;
  70         struct netlink_data *netlink;
  71         int ioctl_sock; /* socket for ioctl() use */
  72         char brname[IFNAMSIZ];
  73         int ifindex;
  74         int if_removed;
  75         struct wpa_driver_capa capa;
  76         int has_capability;
  77
  78         int operstate;
  79
  80         int scan_complete_events;
  81
  82         struct nl_handle *nl_handle;
  83         struct nl_handle *nl_handle_event;
  84         struct nl_cache *nl_cache;
  85         struct nl_cache *nl_cache_event;
  86         struct nl_cb *nl_cb;
  87         struct genl_family *nl80211;
  88
  89         u8 auth_bssid[ETH_ALEN];
  90         u8 bssid[ETH_ALEN];
  91         int associated;
  92         u8 ssid[32];
  93         size_t ssid_len;
  94         int nlmode;
  95         int ap_scan_as_station;
  96         unsigned int assoc_freq;
  97
  98         int monitor_sock;
  99         int monitor_ifidx;
 100         int probe_req_report;
 101         int disable_11b_rates;
 102
 103         unsigned int pending_remain_on_chan:1;
 104         unsigned int pending_send_action:1;
 105         unsigned int added_bridge:1;
 106         unsigned int added_if_into_bridge:1;
 107
 108         u64 remain_on_chan_cookie;
 109         u64 send_action_cookie;
 110
 111         struct wpa_driver_scan_filter *filter_ssids;
 112         size_t num_filter_ssids;
 113
 114         struct i802_bss first_bss;
 115
 116 #ifdef HOSTAPD
 117         int eapol_sock; /* socket for EAPOL frames */
 118
 119         int default_if_indices[16];
 120         int *if_indices;
 121         int num_if_indices;
 122
 123         int last_freq;
 124         int last_freq_ht;
 125 #endif /* HOSTAPD */
 126 };
 127
 128
 129 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 130                                             void *timeout_ctx);
 131 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
 132 static int
 133 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 134 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 135                                    const u8 *addr, int cmd, u16 reason_code,
 136                                    int local_state_change);
 137 static void nl80211_remove_monitor_interface(
 138         struct wpa_driver_nl80211_data *drv);
 139
 140 #ifdef HOSTAPD
 141 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 142 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 143 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 144 static int wpa_driver_nl80211_if_remove(void *priv,
 145                                         enum wpa_driver_if_type type,
 146                                         const char *ifname);
 147 #endif /* HOSTAPD */
 148
 149 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
 150                                                         void *timeout_ctx);
 151 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 152                                      int ifindex, int disabled);
 153
 154
 155 /* nl80211 code */
 156 static int ack_handler(struct nl_msg *msg, void *arg)
 157 {
 158         int *err = arg;
 159         *err = 0;
 160         return NL_STOP;
 161 }
 162
 163 static int finish_handler(struct nl_msg *msg, void *arg)
 164 {
 165         int *ret = arg;
 166         *ret = 0;
 167         return NL_SKIP;
 168 }
 169
 170 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 171                          void *arg)
 172 {
 173         int *ret = arg;
 174         *ret = err->error;
 175         return NL_SKIP;
 176 }
 177
 178
 179 static int no_seq_check(struct nl_msg *msg, void *arg)
 180 {
 181         return NL_OK;
 182 }
 183
 184
 185 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
 186                          struct nl_handle *nl_handle, struct nl_msg *msg,
 187                          int (*valid_handler)(struct nl_msg *, void *),
 188                          void *valid_data)
 189 {
 190         struct nl_cb *cb;
 191         int err = -ENOMEM;
 192
 193         cb = nl_cb_clone(drv->nl_cb);
 194         if (!cb)
 195                 goto out;
 196
 197         err = nl_send_auto_complete(nl_handle, msg);
 198         if (err < 0)
 199                 goto out;
 200
 201         err = 1;
 202
 203         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 204         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 205         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 206
 207         if (valid_handler)
 208                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 209                           valid_handler, valid_data);
 210
 211         while (err > 0)
 212                 nl_recvmsgs(nl_handle, cb);
 213  out:
 214         nl_cb_put(cb);
 215         nlmsg_free(msg);
 216         return err;
 217 }
 218
 219
 220 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 221                               struct nl_msg *msg,
 222                               int (*valid_handler)(struct nl_msg *, void *),
 223                               void *valid_data)
 224 {
 225         return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
 226                              valid_data);
 227 }
 228
 229
 230 struct family_data {
 231         const char *group;
 232         int id;
 233 };
 234
 235
 236 static int family_handler(struct nl_msg *msg, void *arg)
 237 {
 238         struct family_data *res = arg;
 239         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 240         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 241         struct nlattr *mcgrp;
 242         int i;
 243
 244         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 245                   genlmsg_attrlen(gnlh, 0), NULL);
 246         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 247                 return NL_SKIP;
 248
 249         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 250                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 251                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 252                           nla_len(mcgrp), NULL);
 253                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 254                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 255                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 256                                res->group,
 257                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 258                         continue;
 259                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 260                 break;
 261         };
 262
 263         return NL_SKIP;
 264 }
 265
 266
 267 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 268                                const char *family, const char *group)
 269 {
 270         struct nl_msg *msg;
 271         int ret = -1;
 272         struct family_data res = { group, -ENOENT };
 273
 274         msg = nlmsg_alloc();
 275         if (!msg)
 276                 return -ENOMEM;
 277         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 278                     0, 0, CTRL_CMD_GETFAMILY, 0);
 279         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 280
 281         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 282         msg = NULL;
 283         if (ret == 0)
 284                 ret = res.id;
 285
 286 nla_put_failure:
 287         nlmsg_free(msg);
 288         return ret;
 289 }
 290
 291
 292 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 293 {
 294         struct i802_bss *bss = priv;
 295         struct wpa_driver_nl80211_data *drv = bss->drv;
 296         if (!drv->associated)
 297                 return -1;
 298         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 299         return 0;
 300 }
 301
 302
 303 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 304 {
 305         struct i802_bss *bss = priv;
 306         struct wpa_driver_nl80211_data *drv = bss->drv;
 307         if (!drv->associated)
 308                 return -1;
 309         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 310         return drv->ssid_len;
 311 }
 312
 313
 314 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 315                                           char *buf, size_t len, int del)
 316 {
 317         union wpa_event_data event;
 318
 319         os_memset(&event, 0, sizeof(event));
 320         if (len > sizeof(event.interface_status.ifname))
 321                 len = sizeof(event.interface_status.ifname) - 1;
 322         os_memcpy(event.interface_status.ifname, buf, len);
 323         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 324                 EVENT_INTERFACE_ADDED;
 325
 326         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 327                    del ? "DEL" : "NEW",
 328                    event.interface_status.ifname,
 329                    del ? "removed" : "added");
 330
 331         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 332                 if (del)
 333                         drv->if_removed = 1;
 334                 else
 335                         drv->if_removed = 0;
 336         }
 337
 338         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 339 }
 340
 341
 342 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 343                                          u8 *buf, size_t len)
 344 {
 345         int attrlen, rta_len;
 346         struct rtattr *attr;
 347
 348         attrlen = len;
 349         attr = (struct rtattr *) buf;
 350
 351         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 352         while (RTA_OK(attr, attrlen)) {
 353                 if (attr->rta_type == IFLA_IFNAME) {
 354                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 355                             == 0)
 356                                 return 1;
 357                         else
 358                                 break;
 359                 }
 360                 attr = RTA_NEXT(attr, attrlen);
 361         }
 362
 363         return 0;
 364 }
 365
 366
 367 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 368                                           int ifindex, u8 *buf, size_t len)
 369 {
 370         if (drv->ifindex == ifindex)
 371                 return 1;
 372
 373         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 374                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 375                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 376                            "interface");
 377                 wpa_driver_nl80211_finish_drv_init(drv);
 378                 return 1;
 379         }
 380
 381         return 0;
 382 }
 383
 384
 385 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 386                                                  struct ifinfomsg *ifi,
 387                                                  u8 *buf, size_t len)
 388 {
 389         struct wpa_driver_nl80211_data *drv = ctx;
 390         int attrlen, rta_len;
 391         struct rtattr *attr;
 392
 393         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
 394                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 395                            ifi->ifi_index);
 396                 return;
 397         }
 398
 399         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 400                    "(%s%s%s%s)",
 401                    drv->operstate, ifi->ifi_flags,
 402                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 403                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 404                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 405                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 406         /*
 407          * Some drivers send the association event before the operup event--in
 408          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 409          * fails. This will hit us when wpa_supplicant does not need to do
 410          * IEEE 802.1X authentication
 411          */
 412         if (drv->operstate == 1 &&
 413             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 414             !(ifi->ifi_flags & IFF_RUNNING))
 415                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 416                                        -1, IF_OPER_UP);
 417
 418         attrlen = len;
 419         attr = (struct rtattr *) buf;
 420         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 421         while (RTA_OK(attr, attrlen)) {
 422                 if (attr->rta_type == IFLA_IFNAME) {
 423                         wpa_driver_nl80211_event_link(
 424                                 drv,
 425                                 ((char *) attr) + rta_len,
 426                                 attr->rta_len - rta_len, 0);
 427                 }
 428                 attr = RTA_NEXT(attr, attrlen);
 429         }
 430 }
 431
 432
 433 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 434                                                  struct ifinfomsg *ifi,
 435                                                  u8 *buf, size_t len)
 436 {
 437         struct wpa_driver_nl80211_data *drv = ctx;
 438         int attrlen, rta_len;
 439         struct rtattr *attr;
 440
 441         attrlen = len;
 442         attr = (struct rtattr *) buf;
 443
 444         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 445         while (RTA_OK(attr, attrlen)) {
 446                 if (attr->rta_type == IFLA_IFNAME) {
 447                         wpa_driver_nl80211_event_link(
 448                                 drv,
 449                                 ((char *) attr) + rta_len,
 450                                 attr->rta_len - rta_len, 1);
 451                 }
 452                 attr = RTA_NEXT(attr, attrlen);
 453         }
 454 }
 455
 456
 457 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 458                             const u8 *frame, size_t len)
 459 {
 460         const struct ieee80211_mgmt *mgmt;
 461         union wpa_event_data event;
 462
 463         mgmt = (const struct ieee80211_mgmt *) frame;
 464         if (len < 24 + sizeof(mgmt->u.auth)) {
 465                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 466                            "frame");
 467                 return;
 468         }
 469
 470         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 471         os_memset(&event, 0, sizeof(event));
 472         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 473         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 474         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 475         if (len > 24 + sizeof(mgmt->u.auth)) {
 476                 event.auth.ies = mgmt->u.auth.variable;
 477                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 478         }
 479
 480         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 481 }
 482
 483
 484 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 485                             const u8 *frame, size_t len)
 486 {
 487         const struct ieee80211_mgmt *mgmt;
 488         union wpa_event_data event;
 489         u16 status;
 490
 491         mgmt = (const struct ieee80211_mgmt *) frame;
 492         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 493                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 494                            "frame");
 495                 return;
 496         }
 497
 498         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 499         if (status != WLAN_STATUS_SUCCESS) {
 500                 os_memset(&event, 0, sizeof(event));
 501                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 502                         event.assoc_reject.resp_ies =
 503                                 (u8 *) mgmt->u.assoc_resp.variable;
 504                         event.assoc_reject.resp_ies_len =
 505                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 506                 }
 507                 event.assoc_reject.status_code = status;
 508
 509                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 510                 return;
 511         }
 512
 513         drv->associated = 1;
 514         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 515
 516         os_memset(&event, 0, sizeof(event));
 517         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 518                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 519                 event.assoc_info.resp_ies_len =
 520                         len - 24 - sizeof(mgmt->u.assoc_resp);
 521         }
 522
 523         event.assoc_info.freq = drv->assoc_freq;
 524
 525         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 526 }
 527
 528
 529 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 530                                enum nl80211_commands cmd, struct nlattr *status,
 531                                struct nlattr *addr, struct nlattr *req_ie,
 532                                struct nlattr *resp_ie)
 533 {
 534         union wpa_event_data event;
 535
 536         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 537                 /*
 538                  * Avoid reporting two association events that would confuse
 539                  * the core code.
 540                  */
 541                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 542                            "when using userspace SME", cmd);
 543                 return;
 544         }
 545
 546         os_memset(&event, 0, sizeof(event));
 547         if (cmd == NL80211_CMD_CONNECT &&
 548             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 549                 if (resp_ie) {
 550                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 551                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 552                 }
 553                 event.assoc_reject.status_code = nla_get_u16(status);
 554                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 555                 return;
 556         }
 557
 558         drv->associated = 1;
 559         if (addr)
 560                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 561
 562         if (req_ie) {
 563                 event.assoc_info.req_ies = nla_data(req_ie);
 564                 event.assoc_info.req_ies_len = nla_len(req_ie);
 565         }
 566         if (resp_ie) {
 567                 event.assoc_info.resp_ies = nla_data(resp_ie);
 568                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 569         }
 570
 571         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 572 }
 573
 574
 575 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 576                                enum nl80211_commands cmd, struct nlattr *addr)
 577 {
 578         union wpa_event_data event;
 579         enum wpa_event_type ev;
 580
 581         if (nla_len(addr) != ETH_ALEN)
 582                 return;
 583
 584         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 585                    cmd, MAC2STR((u8 *) nla_data(addr)));
 586
 587         if (cmd == NL80211_CMD_AUTHENTICATE)
 588                 ev = EVENT_AUTH_TIMED_OUT;
 589         else if (cmd == NL80211_CMD_ASSOCIATE)
 590                 ev = EVENT_ASSOC_TIMED_OUT;
 591         else
 592                 return;
 593
 594         os_memset(&event, 0, sizeof(event));
 595         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 596         wpa_supplicant_event(drv->ctx, ev, &event);
 597 }
 598
 599
 600 static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
 601                               struct nlattr *freq, const u8 *frame, size_t len)
 602 {
 603         const struct ieee80211_mgmt *mgmt;
 604         union wpa_event_data event;
 605         u16 fc, stype;
 606
 607         mgmt = (const struct ieee80211_mgmt *) frame;
 608         if (len < 24) {
 609                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
 610                 return;
 611         }
 612
 613         fc = le_to_host16(mgmt->frame_control);
 614         stype = WLAN_FC_GET_STYPE(fc);
 615
 616         os_memset(&event, 0, sizeof(event));
 617         event.rx_action.da = mgmt->da;
 618         event.rx_action.sa = mgmt->sa;
 619         event.rx_action.bssid = mgmt->bssid;
 620         event.rx_action.category = mgmt->u.action.category;
 621         event.rx_action.data = &mgmt->u.action.category + 1;
 622         event.rx_action.len = frame + len - event.rx_action.data;
 623         if (freq)
 624                 event.rx_action.freq = nla_get_u32(freq);
 625         wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
 626 }
 627
 628
 629 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
 630                                         struct nlattr *cookie, const u8 *frame,
 631                                         size_t len, struct nlattr *ack)
 632 {
 633         union wpa_event_data event;
 634         const struct ieee80211_hdr *hdr;
 635         u16 fc;
 636         u64 cookie_val;
 637
 638         if (!cookie)
 639                 return;
 640
 641         cookie_val = nla_get_u64(cookie);
 642         wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
 643                    (long long unsigned int) cookie_val,
 644                    cookie_val == drv->send_action_cookie ?
 645                    " (match)" : " (unknown)");
 646         if (cookie_val != drv->send_action_cookie)
 647                 return;
 648
 649         hdr = (const struct ieee80211_hdr *) frame;
 650         fc = le_to_host16(hdr->frame_control);
 651
 652         os_memset(&event, 0, sizeof(event));
 653         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 654         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 655         event.tx_status.dst = hdr->addr1;
 656         event.tx_status.data = frame;
 657         event.tx_status.data_len = len;
 658         event.tx_status.ack = ack != NULL;
 659         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
 660 }
 661
 662
 663 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 664                        enum nl80211_commands cmd, struct nlattr *frame,
 665                        struct nlattr *addr, struct nlattr *timed_out,
 666                        struct nlattr *freq, struct nlattr *ack,
 667                        struct nlattr *cookie)
 668 {
 669         if (timed_out && addr) {
 670                 mlme_timeout_event(drv, cmd, addr);
 671                 return;
 672         }
 673
 674         if (frame == NULL) {
 675                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 676                            "data", cmd);
 677                 return;
 678         }
 679
 680         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 681         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 682                     nla_data(frame), nla_len(frame));
 683
 684         switch (cmd) {
 685         case NL80211_CMD_AUTHENTICATE:
 686                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 687                 break;
 688         case NL80211_CMD_ASSOCIATE:
 689                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 690                 break;
 691         case NL80211_CMD_DEAUTHENTICATE:
 692                 drv->associated = 0;
 693                 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
 694                 break;
 695         case NL80211_CMD_DISASSOCIATE:
 696                 drv->associated = 0;
 697                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 698                 break;
 699         case NL80211_CMD_ACTION:
 700                 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
 701                 break;
 702         case NL80211_CMD_ACTION_TX_STATUS:
 703                 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
 704                                             nla_len(frame), ack);
 705                 break;
 706         default:
 707                 break;
 708         }
 709 }
 710
 711
 712 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 713                                            struct nlattr *tb[])
 714 {
 715         union wpa_event_data data;
 716
 717         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 718         os_memset(&data, 0, sizeof(data));
 719         if (tb[NL80211_ATTR_MAC]) {
 720                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 721                             nla_data(tb[NL80211_ATTR_MAC]),
 722                             nla_len(tb[NL80211_ATTR_MAC]));
 723                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 724         }
 725         if (tb[NL80211_ATTR_KEY_SEQ]) {
 726                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 727                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 728                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 729         }
 730         if (tb[NL80211_ATTR_KEY_TYPE]) {
 731                 enum nl80211_key_type key_type =
 732                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 733                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 734                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 735                         data.michael_mic_failure.unicast = 1;
 736         } else
 737                 data.michael_mic_failure.unicast = 1;
 738
 739         if (tb[NL80211_ATTR_KEY_IDX]) {
 740                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 741                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 742         }
 743
 744         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 745 }
 746
 747
 748 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 749                                  struct nlattr *tb[])
 750 {
 751         if (tb[NL80211_ATTR_MAC] == NULL) {
 752                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 753                            "event");
 754                 return;
 755         }
 756         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 757         drv->associated = 1;
 758         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 759                    MAC2STR(drv->bssid));
 760
 761         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 762 }
 763
 764
 765 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 766                                          int cancel_event, struct nlattr *tb[])
 767 {
 768         unsigned int freq, chan_type, duration;
 769         union wpa_event_data data;
 770         u64 cookie;
 771
 772         if (tb[NL80211_ATTR_WIPHY_FREQ])
 773                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 774         else
 775                 freq = 0;
 776
 777         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 778                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 779         else
 780                 chan_type = 0;
 781
 782         if (tb[NL80211_ATTR_DURATION])
 783                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 784         else
 785                 duration = 0;
 786
 787         if (tb[NL80211_ATTR_COOKIE])
 788                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 789         else
 790                 cookie = 0;
 791
 792         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 793                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 794                    cancel_event, freq, chan_type, duration,
 795                    (long long unsigned int) cookie,
 796                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 797
 798         if (cookie != drv->remain_on_chan_cookie)
 799                 return; /* not for us */
 800
 801         drv->pending_remain_on_chan = !cancel_event;
 802
 803         os_memset(&data, 0, sizeof(data));
 804         data.remain_on_channel.freq = freq;
 805         data.remain_on_channel.duration = duration;
 806         wpa_supplicant_event(drv->ctx, cancel_event ?
 807                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 808                              EVENT_REMAIN_ON_CHANNEL, &data);
 809 }
 810
 811
 812 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 813                             struct nlattr *tb[])
 814 {
 815         union wpa_event_data event;
 816         struct nlattr *nl;
 817         int rem;
 818         struct scan_info *info;
 819 #define MAX_REPORT_FREQS 50
 820         int freqs[MAX_REPORT_FREQS];
 821         int num_freqs = 0;
 822
 823         os_memset(&event, 0, sizeof(event));
 824         info = &event.scan_info;
 825         info->aborted = aborted;
 826
 827         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 828                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 829                         struct wpa_driver_scan_ssid *s =
 830                                 &info->ssids[info->num_ssids];
 831                         s->ssid = nla_data(nl);
 832                         s->ssid_len = nla_len(nl);
 833                         info->num_ssids++;
 834                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 835                                 break;
 836                 }
 837         }
 838         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
 839                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
 840                 {
 841                         freqs[num_freqs] = nla_get_u32(nl);
 842                         num_freqs++;
 843                         if (num_freqs == MAX_REPORT_FREQS - 1)
 844                                 break;
 845                 }
 846                 info->freqs = freqs;
 847                 info->num_freqs = num_freqs;
 848         }
 849         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
 850 }
 851
 852
 853 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
 854                               struct nlattr *tb[])
 855 {
 856         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
 857                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
 858                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
 859                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
 860         };
 861         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
 862         enum nl80211_cqm_rssi_threshold_event event;
 863         union wpa_event_data ed;
 864
 865         if (tb[NL80211_ATTR_CQM] == NULL ||
 866             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
 867                              cqm_policy)) {
 868                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
 869                 return;
 870         }
 871
 872         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
 873                 return;
 874         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
 875
 876         os_memset(&ed, 0, sizeof(ed));
 877
 878         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
 879                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
 880                            "event: RSSI high");
 881                 ed.signal_change.above_threshold = 1;
 882         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
 883                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
 884                            "event: RSSI low");
 885                 ed.signal_change.above_threshold = 0;
 886         } else
 887                 return;
 888
 889         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
 890 }
 891
 892
 893 static int process_event(struct nl_msg *msg, void *arg)
 894 {
 895         struct wpa_driver_nl80211_data *drv = arg;
 896         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 897         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 898
 899         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 900                   genlmsg_attrlen(gnlh, 0), NULL);
 901
 902         if (tb[NL80211_ATTR_IFINDEX]) {
 903                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 904                 if (ifindex != drv->ifindex) {
 905                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
 906                                    " for foreign interface (ifindex %d)",
 907                                    gnlh->cmd, ifindex);
 908                         return NL_SKIP;
 909                 }
 910         }
 911
 912         if (drv->ap_scan_as_station &&
 913             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
 914              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
 915                 wpa_driver_nl80211_set_mode(&drv->first_bss,
 916                                             IEEE80211_MODE_AP);
 917                 drv->ap_scan_as_station = 0;
 918         }
 919
 920         switch (gnlh->cmd) {
 921         case NL80211_CMD_TRIGGER_SCAN:
 922                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
 923                 break;
 924         case NL80211_CMD_NEW_SCAN_RESULTS:
 925                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
 926                 drv->scan_complete_events = 1;
 927                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 928                                      drv->ctx);
 929                 send_scan_event(drv, 0, tb);
 930                 break;
 931         case NL80211_CMD_SCAN_ABORTED:
 932                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
 933                 /*
 934                  * Need to indicate that scan results are available in order
 935                  * not to make wpa_supplicant stop its scanning.
 936                  */
 937                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 938                                      drv->ctx);
 939                 send_scan_event(drv, 1, tb);
 940                 break;
 941         case NL80211_CMD_AUTHENTICATE:
 942         case NL80211_CMD_ASSOCIATE:
 943         case NL80211_CMD_DEAUTHENTICATE:
 944         case NL80211_CMD_DISASSOCIATE:
 945         case NL80211_CMD_ACTION:
 946         case NL80211_CMD_ACTION_TX_STATUS:
 947                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
 948                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
 949                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
 950                            tb[NL80211_ATTR_COOKIE]);
 951                 break;
 952         case NL80211_CMD_CONNECT:
 953         case NL80211_CMD_ROAM:
 954                 mlme_event_connect(drv, gnlh->cmd,
 955                                    tb[NL80211_ATTR_STATUS_CODE],
 956                                    tb[NL80211_ATTR_MAC],
 957                                    tb[NL80211_ATTR_REQ_IE],
 958                                    tb[NL80211_ATTR_RESP_IE]);
 959                 break;
 960         case NL80211_CMD_DISCONNECT:
 961                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 962                         /*
 963                          * Avoid reporting two disassociation events that could
 964                          * confuse the core code.
 965                          */
 966                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
 967                                    "event when using userspace SME");
 968                         break;
 969                 }
 970                 drv->associated = 0;
 971                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 972                 break;
 973         case NL80211_CMD_MICHAEL_MIC_FAILURE:
 974                 mlme_event_michael_mic_failure(drv, tb);
 975                 break;
 976         case NL80211_CMD_JOIN_IBSS:
 977                 mlme_event_join_ibss(drv, tb);
 978                 break;
 979         case NL80211_CMD_REMAIN_ON_CHANNEL:
 980                 mlme_event_remain_on_channel(drv, 0, tb);
 981                 break;
 982         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
 983                 mlme_event_remain_on_channel(drv, 1, tb);
 984                 break;
 985         case NL80211_CMD_NOTIFY_CQM:
 986                 nl80211_cqm_event(drv, tb);
 987                 break;
 988         default:
 989                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
 990                            "(cmd=%d)", gnlh->cmd);
 991                 break;
 992         }
 993
 994         return NL_SKIP;
 995 }
 996
 997
 998 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
 999                                              void *sock_ctx)
1000 {
1001         struct nl_cb *cb;
1002         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1003
1004         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1005
1006         cb = nl_cb_clone(drv->nl_cb);
1007         if (!cb)
1008                 return;
1009         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1010         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1011         nl_recvmsgs(drv->nl_handle_event, cb);
1012         nl_cb_put(cb);
1013 }
1014
1015
1016 /**
1017  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1018  * @priv: driver_nl80211 private data
1019  * @alpha2_arg: country to which to switch to
1020  * Returns: 0 on success, -1 on failure
1021  *
1022  * This asks nl80211 to set the regulatory domain for given
1023  * country ISO / IEC alpha2.
1024  */
1025 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1026 {
1027         struct i802_bss *bss = priv;
1028         struct wpa_driver_nl80211_data *drv = bss->drv;
1029         char alpha2[3];
1030         struct nl_msg *msg;
1031
1032         msg = nlmsg_alloc();
1033         if (!msg)
1034                 return -ENOMEM;
1035
1036         alpha2[0] = alpha2_arg[0];
1037         alpha2[1] = alpha2_arg[1];
1038         alpha2[2] = '\0';
1039
1040         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1041                     0, NL80211_CMD_REQ_SET_REG, 0);
1042
1043         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1044         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1045                 return -EINVAL;
1046         return 0;
1047 nla_put_failure:
1048         return -EINVAL;
1049 }
1050
1051
1052 #ifndef HOSTAPD
1053 struct wiphy_info_data {
1054         int max_scan_ssids;
1055         int ap_supported;
1056         int auth_supported;
1057         int connect_supported;
1058 };
1059
1060
1061 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1062 {
1063         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1064         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1065         struct wiphy_info_data *info = arg;
1066
1067         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1068                   genlmsg_attrlen(gnlh, 0), NULL);
1069
1070         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1071                 info->max_scan_ssids =
1072                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1073
1074         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1075                 struct nlattr *nl_mode;
1076                 int i;
1077                 nla_for_each_nested(nl_mode,
1078                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1079                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1080                                 info->ap_supported = 1;
1081                                 break;
1082                         }
1083                 }
1084         }
1085
1086         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1087                 struct nlattr *nl_cmd;
1088                 int i;
1089
1090                 nla_for_each_nested(nl_cmd,
1091                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1092                         u32 cmd = nla_get_u32(nl_cmd);
1093                         if (cmd == NL80211_CMD_AUTHENTICATE)
1094                                 info->auth_supported = 1;
1095                         else if (cmd == NL80211_CMD_CONNECT)
1096                                 info->connect_supported = 1;
1097                 }
1098         }
1099
1100         return NL_SKIP;
1101 }
1102
1103
1104 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1105                                        struct wiphy_info_data *info)
1106 {
1107         struct nl_msg *msg;
1108
1109         os_memset(info, 0, sizeof(*info));
1110         msg = nlmsg_alloc();
1111         if (!msg)
1112                 return -1;
1113
1114         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1115                     0, NL80211_CMD_GET_WIPHY, 0);
1116
1117         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1118
1119         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1120                 return 0;
1121         msg = NULL;
1122 nla_put_failure:
1123         nlmsg_free(msg);
1124         return -1;
1125 }
1126
1127
1128 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1129 {
1130         struct wiphy_info_data info;
1131         if (wpa_driver_nl80211_get_info(drv, &info))
1132                 return -1;
1133         drv->has_capability = 1;
1134         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1135         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1136                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1137                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1138                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1139         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1140                 WPA_DRIVER_CAPA_ENC_WEP104 |
1141                 WPA_DRIVER_CAPA_ENC_TKIP |
1142                 WPA_DRIVER_CAPA_ENC_CCMP;
1143         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1144                 WPA_DRIVER_AUTH_SHARED |
1145                 WPA_DRIVER_AUTH_LEAP;
1146
1147         drv->capa.max_scan_ssids = info.max_scan_ssids;
1148         if (info.ap_supported)
1149                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1150
1151         if (info.auth_supported)
1152                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1153         else if (!info.connect_supported) {
1154                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1155                            "authentication/association or connect commands");
1156                 return -1;
1157         }
1158
1159         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1160
1161         return 0;
1162 }
1163 #endif /* HOSTAPD */
1164
1165
1166 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1167                                       void *ctx)
1168 {
1169         int ret;
1170
1171         /* Initialize generic netlink and nl80211 */
1172
1173         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1174         if (drv->nl_cb == NULL) {
1175                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1176                            "callbacks");
1177                 goto err1;
1178         }
1179
1180         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1181         if (drv->nl_handle == NULL) {
1182                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1183                            "callbacks");
1184                 goto err2;
1185         }
1186
1187         drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1188         if (drv->nl_handle_event == NULL) {
1189                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1190                            "callbacks (event)");
1191                 goto err2b;
1192         }
1193
1194         if (genl_connect(drv->nl_handle)) {
1195                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1196                            "netlink");
1197                 goto err3;
1198         }
1199
1200         if (genl_connect(drv->nl_handle_event)) {
1201                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1202                            "netlink (event)");
1203                 goto err3;
1204         }
1205
1206 #ifdef CONFIG_LIBNL20
1207         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1208                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1209                            "netlink cache");
1210                 goto err3;
1211         }
1212         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1213             0) {
1214                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1215                            "netlink cache (event)");
1216                 goto err3b;
1217         }
1218 #else /* CONFIG_LIBNL20 */
1219         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1220         if (drv->nl_cache == NULL) {
1221                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1222                            "netlink cache");
1223                 goto err3;
1224         }
1225         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1226         if (drv->nl_cache_event == NULL) {
1227                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1228                            "netlink cache (event)");
1229                 goto err3b;
1230         }
1231 #endif /* CONFIG_LIBNL20 */
1232
1233         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1234         if (drv->nl80211 == NULL) {
1235                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1236                            "found");
1237                 goto err4;
1238         }
1239
1240         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1241         if (ret >= 0)
1242                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1243         if (ret < 0) {
1244                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1245                            "membership for scan events: %d (%s)",
1246                            ret, strerror(-ret));
1247                 goto err4;
1248         }
1249
1250         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1251         if (ret >= 0)
1252                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1253         if (ret < 0) {
1254                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1255                            "membership for mlme events: %d (%s)",
1256                            ret, strerror(-ret));
1257                 goto err4;
1258         }
1259
1260         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1261                                  wpa_driver_nl80211_event_receive, drv, ctx);
1262
1263         return 0;
1264
1265 err4:
1266         nl_cache_free(drv->nl_cache_event);
1267 err3b:
1268         nl_cache_free(drv->nl_cache);
1269 err3:
1270         nl_handle_destroy(drv->nl_handle_event);
1271 err2b:
1272         nl_handle_destroy(drv->nl_handle);
1273 err2:
1274         nl_cb_put(drv->nl_cb);
1275 err1:
1276         return -1;
1277 }
1278
1279
1280 /**
1281  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1282  * @ctx: context to be used when calling wpa_supplicant functions,
1283  * e.g., wpa_supplicant_event()
1284  * @ifname: interface name, e.g., wlan0
1285  * Returns: Pointer to private data, %NULL on failure
1286  */
1287 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1288 {
1289         struct wpa_driver_nl80211_data *drv;
1290         struct netlink_config *cfg;
1291         struct i802_bss *bss;
1292
1293         drv = os_zalloc(sizeof(*drv));
1294         if (drv == NULL)
1295                 return NULL;
1296         drv->ctx = ctx;
1297         bss = &drv->first_bss;
1298         bss->drv = drv;
1299         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1300         drv->monitor_ifidx = -1;
1301         drv->monitor_sock = -1;
1302         drv->ioctl_sock = -1;
1303
1304         if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1305                 os_free(drv);
1306                 return NULL;
1307         }
1308
1309         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1310         if (drv->ioctl_sock < 0) {
1311                 perror("socket(PF_INET,SOCK_DGRAM)");
1312                 goto failed;
1313         }
1314
1315         cfg = os_zalloc(sizeof(*cfg));
1316         if (cfg == NULL)
1317                 goto failed;
1318         cfg->ctx = drv;
1319         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1320         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1321         drv->netlink = netlink_init(cfg);
1322         if (drv->netlink == NULL) {
1323                 os_free(cfg);
1324                 goto failed;
1325         }
1326         if (wpa_driver_nl80211_finish_drv_init(drv))
1327                 goto failed;
1328
1329         return bss;
1330
1331 failed:
1332         netlink_deinit(drv->netlink);
1333         if (drv->ioctl_sock >= 0)
1334                 close(drv->ioctl_sock);
1335
1336         genl_family_put(drv->nl80211);
1337         nl_cache_free(drv->nl_cache);
1338         nl_handle_destroy(drv->nl_handle);
1339         nl_cb_put(drv->nl_cb);
1340         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1341
1342         os_free(drv);
1343         return NULL;
1344 }
1345
1346
1347 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1348                                          const u8 *match, size_t match_len)
1349 {
1350         struct nl_msg *msg;
1351         int ret = -1;
1352
1353         msg = nlmsg_alloc();
1354         if (!msg)
1355                 return -1;
1356
1357         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1358                     NL80211_CMD_REGISTER_ACTION, 0);
1359
1360         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1361         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1362
1363         ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1364         msg = NULL;
1365         if (ret) {
1366                 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1367                            "failed: ret=%d (%s)", ret, strerror(-ret));
1368                 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1369                             match, match_len);
1370                 goto nla_put_failure;
1371         }
1372         ret = 0;
1373 nla_put_failure:
1374         nlmsg_free(msg);
1375         return ret;
1376 }
1377
1378
1379 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1380 {
1381         if (0) {
1382                 /* Public Action frames */
1383                 return nl80211_register_action_frame(drv, (u8 *) "\x04", 1);
1384         }
1385
1386         /* FT Action frames */
1387         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1388                 return -1;
1389         else
1390                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1391                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1392
1393         return 0;
1394 }
1395
1396
1397 static int
1398 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1399 {
1400         struct i802_bss *bss = &drv->first_bss;
1401
1402         drv->ifindex = if_nametoindex(bss->ifname);
1403         drv->first_bss.ifindex = drv->ifindex;
1404
1405 #ifndef HOSTAPD
1406         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1407                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1408                            "use managed mode");
1409         }
1410
1411         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1412                 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
1413                            bss->ifname);
1414                 return -1;
1415         }
1416
1417         if (wpa_driver_nl80211_capa(drv))
1418                 return -1;
1419
1420         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1421                                1, IF_OPER_DORMANT);
1422 #endif /* HOSTAPD */
1423
1424         if (nl80211_register_action_frames(drv) < 0) {
1425                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1426                            "frame processing - ignore for now");
1427                 /*
1428                  * Older kernel versions did not support this, so ignore the
1429                  * error for now. Some functionality may not be available
1430                  * because of this.
1431                  */
1432         }
1433
1434         return 0;
1435 }
1436
1437
1438 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1439 {
1440         struct nl_msg *msg;
1441
1442         msg = nlmsg_alloc();
1443         if (!msg)
1444                 return -ENOMEM;
1445
1446         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1447                     0, NL80211_CMD_DEL_BEACON, 0);
1448         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1449
1450         return send_and_recv_msgs(drv, msg, NULL, NULL);
1451  nla_put_failure:
1452         return -ENOBUFS;
1453 }
1454
1455
1456 /**
1457  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1458  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1459  *
1460  * Shut down driver interface and processing of driver events. Free
1461  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1462  */
1463 static void wpa_driver_nl80211_deinit(void *priv)
1464 {
1465         struct i802_bss *bss = priv;
1466         struct wpa_driver_nl80211_data *drv = bss->drv;
1467
1468         if (drv->added_if_into_bridge) {
1469                 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1470                     < 0)
1471                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1472                                    "interface %s from bridge %s: %s",
1473                                    bss->ifname, drv->brname, strerror(errno));
1474         }
1475         if (drv->added_bridge) {
1476                 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1477                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1478                                    "bridge %s: %s",
1479                                    drv->brname, strerror(errno));
1480         }
1481
1482         nl80211_remove_monitor_interface(drv);
1483
1484         if (drv->nlmode == NL80211_IFTYPE_AP)
1485                 wpa_driver_nl80211_del_beacon(drv);
1486
1487 #ifdef HOSTAPD
1488         if (drv->last_freq_ht) {
1489                 /* Clear HT flags from the driver */
1490                 struct hostapd_freq_params freq;
1491                 os_memset(&freq, 0, sizeof(freq));
1492                 freq.freq = drv->last_freq;
1493                 i802_set_freq(priv, &freq);
1494         }
1495
1496         if (drv->eapol_sock >= 0) {
1497                 eloop_unregister_read_sock(drv->eapol_sock);
1498                 close(drv->eapol_sock);
1499         }
1500
1501         if (drv->if_indices != drv->default_if_indices)
1502                 os_free(drv->if_indices);
1503 #endif /* HOSTAPD */
1504
1505         if (drv->disable_11b_rates)
1506                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1507
1508         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1509         netlink_deinit(drv->netlink);
1510
1511         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1512
1513         (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1514         wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1515
1516         if (drv->ioctl_sock >= 0)
1517                 close(drv->ioctl_sock);
1518
1519         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1520         genl_family_put(drv->nl80211);
1521         nl_cache_free(drv->nl_cache);
1522         nl_cache_free(drv->nl_cache_event);
1523         nl_handle_destroy(drv->nl_handle);
1524         nl_handle_destroy(drv->nl_handle_event);
1525         nl_cb_put(drv->nl_cb);
1526
1527         eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1528                              drv, NULL);
1529
1530         os_free(drv->filter_ssids);
1531
1532         os_free(drv);
1533 }
1534
1535
1536 /**
1537  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1538  * @eloop_ctx: Driver private data
1539  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1540  *
1541  * This function can be used as registered timeout when starting a scan to
1542  * generate a scan completed event if the driver does not report this.
1543  */
1544 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1545 {
1546         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1547         if (drv->ap_scan_as_station) {
1548                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1549                                             IEEE80211_MODE_AP);
1550                 drv->ap_scan_as_station = 0;
1551         }
1552         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1553         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1554 }
1555
1556
1557 /**
1558  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1559  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1560  * @params: Scan parameters
1561  * Returns: 0 on success, -1 on failure
1562  */
1563 static int wpa_driver_nl80211_scan(void *priv,
1564                                    struct wpa_driver_scan_params *params)
1565 {
1566         struct i802_bss *bss = priv;
1567         struct wpa_driver_nl80211_data *drv = bss->drv;
1568         int ret = 0, timeout;
1569         struct nl_msg *msg, *ssids, *freqs;
1570         size_t i;
1571
1572         msg = nlmsg_alloc();
1573         ssids = nlmsg_alloc();
1574         freqs = nlmsg_alloc();
1575         if (!msg || !ssids || !freqs) {
1576                 nlmsg_free(msg);
1577                 nlmsg_free(ssids);
1578                 nlmsg_free(freqs);
1579                 return -1;
1580         }
1581
1582         os_free(drv->filter_ssids);
1583         drv->filter_ssids = params->filter_ssids;
1584         params->filter_ssids = NULL;
1585         drv->num_filter_ssids = params->num_filter_ssids;
1586
1587         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1588                     NL80211_CMD_TRIGGER_SCAN, 0);
1589
1590         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1591
1592         for (i = 0; i < params->num_ssids; i++) {
1593                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1594                                   params->ssids[i].ssid,
1595                                   params->ssids[i].ssid_len);
1596                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1597                         params->ssids[i].ssid);
1598         }
1599         if (params->num_ssids)
1600                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1601
1602         if (params->extra_ies) {
1603                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1604                                   params->extra_ies, params->extra_ies_len);
1605                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1606                         params->extra_ies);
1607         }
1608
1609         if (params->freqs) {
1610                 for (i = 0; params->freqs[i]; i++) {
1611                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1612                                    "MHz", params->freqs[i]);
1613                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1614                 }
1615                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1616         }
1617
1618         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1619         msg = NULL;
1620         if (ret) {
1621                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1622                            "(%s)", ret, strerror(-ret));
1623 #ifdef HOSTAPD
1624                 if (drv->nlmode == NL80211_IFTYPE_AP) {
1625                         /*
1626                          * mac80211 does not allow scan requests in AP mode, so
1627                          * try to do this in station mode.
1628                          */
1629                         if (wpa_driver_nl80211_set_mode(bss,
1630                                                         IEEE80211_MODE_INFRA))
1631                                 goto nla_put_failure;
1632
1633                         if (wpa_driver_nl80211_scan(drv, params)) {
1634                                 wpa_driver_nl80211_set_mode(bss,
1635                                                             IEEE80211_MODE_AP);
1636                                 goto nla_put_failure;
1637                         }
1638
1639                         /* Restore AP mode when processing scan results */
1640                         drv->ap_scan_as_station = 1;
1641                         ret = 0;
1642                 } else
1643                         goto nla_put_failure;
1644 #else /* HOSTAPD */
1645                 goto nla_put_failure;
1646 #endif /* HOSTAPD */
1647         }
1648
1649         /* Not all drivers generate "scan completed" wireless event, so try to
1650          * read results after a timeout. */
1651         timeout = 10;
1652         if (drv->scan_complete_events) {
1653                 /*
1654                  * The driver seems to deliver events to notify when scan is
1655                  * complete, so use longer timeout to avoid race conditions
1656                  * with scanning and following association request.
1657                  */
1658                 timeout = 30;
1659         }
1660         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1661                    "seconds", ret, timeout);
1662         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1663         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1664                                drv, drv->ctx);
1665
1666 nla_put_failure:
1667         nlmsg_free(ssids);
1668         nlmsg_free(msg);
1669         nlmsg_free(freqs);
1670         return ret;
1671 }
1672
1673
1674 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1675 {
1676         const u8 *end, *pos;
1677
1678         if (ies == NULL)
1679                 return NULL;
1680
1681         pos = ies;
1682         end = ies + ies_len;
1683
1684         while (pos + 1 < end) {
1685                 if (pos + 2 + pos[1] > end)
1686                         break;
1687                 if (pos[0] == ie)
1688                         return pos;
1689                 pos += 2 + pos[1];
1690         }
1691
1692         return NULL;
1693 }
1694
1695
1696 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1697                                  const u8 *ie, size_t ie_len)
1698 {
1699         const u8 *ssid;
1700         size_t i;
1701
1702         if (drv->filter_ssids == NULL)
1703                 return 0;
1704
1705         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1706         if (ssid == NULL)
1707                 return 1;
1708
1709         for (i = 0; i < drv->num_filter_ssids; i++) {
1710                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1711                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1712                     0)
1713                         return 0;
1714         }
1715
1716         return 1;
1717 }
1718
1719
1720 struct nl80211_bss_info_arg {
1721         struct wpa_driver_nl80211_data *drv;
1722         struct wpa_scan_results *res;
1723 };
1724
1725 static int bss_info_handler(struct nl_msg *msg, void *arg)
1726 {
1727         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1728         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1729         struct nlattr *bss[NL80211_BSS_MAX + 1];
1730         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1731                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1732                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1733                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1734                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1735                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1736                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1737                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1738                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1739                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1740                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1741                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1742         };
1743         struct nl80211_bss_info_arg *_arg = arg;
1744         struct wpa_scan_results *res = _arg->res;
1745         struct wpa_scan_res **tmp;
1746         struct wpa_scan_res *r;
1747         const u8 *ie, *beacon_ie;
1748         size_t ie_len, beacon_ie_len;
1749         u8 *pos;
1750
1751         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1752                   genlmsg_attrlen(gnlh, 0), NULL);
1753         if (!tb[NL80211_ATTR_BSS])
1754                 return NL_SKIP;
1755         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1756                              bss_policy))
1757                 return NL_SKIP;
1758         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1759                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1760                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1761         } else {
1762                 ie = NULL;
1763                 ie_len = 0;
1764         }
1765         if (bss[NL80211_BSS_BEACON_IES]) {
1766                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1767                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1768         } else {
1769                 beacon_ie = NULL;
1770                 beacon_ie_len = 0;
1771         }
1772
1773         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1774                                   ie ? ie_len : beacon_ie_len))
1775                 return NL_SKIP;
1776
1777         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1778         if (r == NULL)
1779                 return NL_SKIP;
1780         if (bss[NL80211_BSS_BSSID])
1781                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1782                           ETH_ALEN);
1783         if (bss[NL80211_BSS_FREQUENCY])
1784                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1785         if (bss[NL80211_BSS_BEACON_INTERVAL])
1786                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1787         if (bss[NL80211_BSS_CAPABILITY])
1788                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1789         r->flags |= WPA_SCAN_NOISE_INVALID;
1790         if (bss[NL80211_BSS_SIGNAL_MBM]) {
1791                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1792                 r->level /= 100; /* mBm to dBm */
1793                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1794         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1795                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1796                 r->flags |= WPA_SCAN_LEVEL_INVALID;
1797         } else
1798                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1799         if (bss[NL80211_BSS_TSF])
1800                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1801         if (bss[NL80211_BSS_SEEN_MS_AGO])
1802                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1803         r->ie_len = ie_len;
1804         pos = (u8 *) (r + 1);
1805         if (ie) {
1806                 os_memcpy(pos, ie, ie_len);
1807                 pos += ie_len;
1808         }
1809         r->beacon_ie_len = beacon_ie_len;
1810         if (beacon_ie)
1811                 os_memcpy(pos, beacon_ie, beacon_ie_len);
1812
1813         if (bss[NL80211_BSS_STATUS]) {
1814                 enum nl80211_bss_status status;
1815                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1816                 switch (status) {
1817                 case NL80211_BSS_STATUS_AUTHENTICATED:
1818                         r->flags |= WPA_SCAN_AUTHENTICATED;
1819                         break;
1820                 case NL80211_BSS_STATUS_ASSOCIATED:
1821                         r->flags |= WPA_SCAN_ASSOCIATED;
1822                         break;
1823                 default:
1824                         break;
1825                 }
1826         }
1827
1828         tmp = os_realloc(res->res,
1829                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1830         if (tmp == NULL) {
1831                 os_free(r);
1832                 return NL_SKIP;
1833         }
1834         tmp[res->num++] = r;
1835         res->res = tmp;
1836
1837         return NL_SKIP;
1838 }
1839
1840
1841 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1842                                  const u8 *addr)
1843 {
1844         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1845                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1846                            "mismatch (" MACSTR ")", MAC2STR(addr));
1847                 wpa_driver_nl80211_mlme(drv, addr,
1848                                         NL80211_CMD_DEAUTHENTICATE,
1849                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
1850         }
1851 }
1852
1853
1854 static void wpa_driver_nl80211_check_bss_status(
1855         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1856 {
1857         size_t i;
1858
1859         for (i = 0; i < res->num; i++) {
1860                 struct wpa_scan_res *r = res->res[i];
1861                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1862                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1863                                    "indicates BSS status with " MACSTR
1864                                    " as authenticated",
1865                                    MAC2STR(r->bssid));
1866                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1867                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1868                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1869                             0) {
1870                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1871                                            " in local state (auth=" MACSTR
1872                                            " assoc=" MACSTR ")",
1873                                            MAC2STR(drv->auth_bssid),
1874                                            MAC2STR(drv->bssid));
1875                                 clear_state_mismatch(drv, r->bssid);
1876                         }
1877                 }
1878
1879                 if (r->flags & WPA_SCAN_ASSOCIATED) {
1880                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1881                                    "indicate BSS status with " MACSTR
1882                                    " as associated",
1883                                    MAC2STR(r->bssid));
1884                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1885                             !drv->associated) {
1886                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1887                                            "(not associated) does not match "
1888                                            "with BSS state");
1889                                 clear_state_mismatch(drv, r->bssid);
1890                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1891                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1892                                    0) {
1893                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1894                                            "(associated with " MACSTR ") does "
1895                                            "not match with BSS state",
1896                                            MAC2STR(drv->bssid));
1897                                 clear_state_mismatch(drv, r->bssid);
1898                                 clear_state_mismatch(drv, drv->bssid);
1899                         }
1900                 }
1901         }
1902 }
1903
1904
1905 static void wpa_scan_results_free(struct wpa_scan_results *res)
1906 {
1907         size_t i;
1908
1909         if (res == NULL)
1910                 return;
1911
1912         for (i = 0; i < res->num; i++)
1913                 os_free(res->res[i]);
1914         os_free(res->res);
1915         os_free(res);
1916 }
1917
1918
1919 static struct wpa_scan_results *
1920 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
1921 {
1922         struct nl_msg *msg;
1923         struct wpa_scan_results *res;
1924         int ret;
1925         struct nl80211_bss_info_arg arg;
1926
1927         res = os_zalloc(sizeof(*res));
1928         if (res == NULL)
1929                 return NULL;
1930         msg = nlmsg_alloc();
1931         if (!msg)
1932                 goto nla_put_failure;
1933
1934         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1935                     NL80211_CMD_GET_SCAN, 0);
1936         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1937
1938         arg.drv = drv;
1939         arg.res = res;
1940         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1941         msg = NULL;
1942         if (ret == 0) {
1943                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1944                            (unsigned long) res->num);
1945                 return res;
1946         }
1947         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1948                    "(%s)", ret, strerror(-ret));
1949 nla_put_failure:
1950         nlmsg_free(msg);
1951         wpa_scan_results_free(res);
1952         return NULL;
1953 }
1954
1955
1956 /**
1957  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1958  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1959  * Returns: Scan results on success, -1 on failure
1960  */
1961 static struct wpa_scan_results *
1962 wpa_driver_nl80211_get_scan_results(void *priv)
1963 {
1964         struct i802_bss *bss = priv;
1965         struct wpa_driver_nl80211_data *drv = bss->drv;
1966         struct wpa_scan_results *res;
1967
1968         res = nl80211_get_scan_results(drv);
1969         if (res)
1970                 wpa_driver_nl80211_check_bss_status(drv, res);
1971         return res;
1972 }
1973
1974
1975 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
1976 {
1977         struct wpa_scan_results *res;
1978         size_t i;
1979
1980         res = nl80211_get_scan_results(drv);
1981         if (res == NULL) {
1982                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
1983                 return;
1984         }
1985
1986         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
1987         for (i = 0; i < res->num; i++) {
1988                 struct wpa_scan_res *r = res->res[i];
1989                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
1990                            (int) i, (int) res->num, MAC2STR(r->bssid),
1991                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
1992                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
1993         }
1994
1995         wpa_scan_results_free(res);
1996 }
1997
1998
1999 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2000                                       enum wpa_alg alg, const u8 *addr,
2001                                       int key_idx, int set_tx,
2002                                       const u8 *seq, size_t seq_len,
2003                                       const u8 *key, size_t key_len)
2004 {
2005         struct i802_bss *bss = priv;
2006         struct wpa_driver_nl80211_data *drv = bss->drv;
2007         int ifindex = if_nametoindex(ifname);
2008         struct nl_msg *msg;
2009         int ret;
2010
2011         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2012                    "set_tx=%d seq_len=%lu key_len=%lu",
2013                    __func__, ifindex, alg, addr, key_idx, set_tx,
2014                    (unsigned long) seq_len, (unsigned long) key_len);
2015
2016         msg = nlmsg_alloc();
2017         if (!msg)
2018                 return -ENOMEM;
2019
2020         if (alg == WPA_ALG_NONE) {
2021                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2022                             0, NL80211_CMD_DEL_KEY, 0);
2023         } else {
2024                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2025                             0, NL80211_CMD_NEW_KEY, 0);
2026                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2027                 switch (alg) {
2028                 case WPA_ALG_WEP:
2029                         if (key_len == 5)
2030                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2031                                             WLAN_CIPHER_SUITE_WEP40);
2032                         else
2033                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2034                                             WLAN_CIPHER_SUITE_WEP104);
2035                         break;
2036                 case WPA_ALG_TKIP:
2037                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2038                                     WLAN_CIPHER_SUITE_TKIP);
2039                         break;
2040                 case WPA_ALG_CCMP:
2041                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2042                                     WLAN_CIPHER_SUITE_CCMP);
2043                         break;
2044                 case WPA_ALG_IGTK:
2045                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2046                                     WLAN_CIPHER_SUITE_AES_CMAC);
2047                         break;
2048                 default:
2049                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2050                                    "algorithm %d", __func__, alg);
2051                         nlmsg_free(msg);
2052                         return -1;
2053                 }
2054         }
2055
2056         if (seq && seq_len)
2057                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2058
2059         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2060         {
2061                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2062                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2063         }
2064         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2065         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2066
2067         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2068         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2069                 ret = 0;
2070         if (ret)
2071                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2072                            ret, strerror(-ret));
2073
2074         /*
2075          * If we failed or don't need to set the default TX key (below),
2076          * we're done here.
2077          */
2078         if (ret || !set_tx || alg == WPA_ALG_NONE)
2079                 return ret;
2080 #ifdef HOSTAPD /* FIX: is this needed? */
2081         if (addr)
2082                 return ret;
2083 #endif /* HOSTAPD */
2084
2085         msg = nlmsg_alloc();
2086         if (!msg)
2087                 return -ENOMEM;
2088
2089         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2090                     0, NL80211_CMD_SET_KEY, 0);
2091         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2092         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2093         if (alg == WPA_ALG_IGTK)
2094                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2095         else
2096                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2097
2098         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2099         if (ret == -ENOENT)
2100                 ret = 0;
2101         if (ret)
2102                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2103                            "err=%d %s)", ret, strerror(-ret));
2104         return ret;
2105
2106 nla_put_failure:
2107         return -ENOBUFS;
2108 }
2109
2110
2111 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2112                       int key_idx, int defkey,
2113                       const u8 *seq, size_t seq_len,
2114                       const u8 *key, size_t key_len)
2115 {
2116         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2117         if (!key_attr)
2118                 return -1;
2119
2120         if (defkey && alg == WPA_ALG_IGTK)
2121                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2122         else if (defkey)
2123                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2124
2125         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2126
2127         switch (alg) {
2128         case WPA_ALG_WEP:
2129                 if (key_len == 5)
2130                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2131                                     WLAN_CIPHER_SUITE_WEP40);
2132                 else
2133                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2134                                     WLAN_CIPHER_SUITE_WEP104);
2135                 break;
2136         case WPA_ALG_TKIP:
2137                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2138                 break;
2139         case WPA_ALG_CCMP:
2140                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2141                 break;
2142         case WPA_ALG_IGTK:
2143                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2144                             WLAN_CIPHER_SUITE_AES_CMAC);
2145                 break;
2146         default:
2147                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2148                            "algorithm %d", __func__, alg);
2149                 return -1;
2150         }
2151
2152         if (seq && seq_len)
2153                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2154
2155         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2156
2157         nla_nest_end(msg, key_attr);
2158
2159         return 0;
2160  nla_put_failure:
2161         return -1;
2162 }
2163
2164
2165 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2166                                  struct nl_msg *msg)
2167 {
2168         int i, privacy = 0;
2169         struct nlattr *nl_keys, *nl_key;
2170
2171         for (i = 0; i < 4; i++) {
2172                 if (!params->wep_key[i])
2173                         continue;
2174                 privacy = 1;
2175                 break;
2176         }
2177         if (!privacy)
2178                 return 0;
2179
2180         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2181
2182         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2183         if (!nl_keys)
2184                 goto nla_put_failure;
2185
2186         for (i = 0; i < 4; i++) {
2187                 if (!params->wep_key[i])
2188                         continue;
2189
2190                 nl_key = nla_nest_start(msg, i);
2191                 if (!nl_key)
2192                         goto nla_put_failure;
2193
2194                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2195                         params->wep_key[i]);
2196                 if (params->wep_key_len[i] == 5)
2197                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2198                                     WLAN_CIPHER_SUITE_WEP40);
2199                 else
2200                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2201                                     WLAN_CIPHER_SUITE_WEP104);
2202
2203                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2204
2205                 if (i == params->wep_tx_keyidx)
2206                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2207
2208                 nla_nest_end(msg, nl_key);
2209         }
2210         nla_nest_end(msg, nl_keys);
2211
2212         return 0;
2213
2214 nla_put_failure:
2215         return -ENOBUFS;
2216 }
2217
2218
2219 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2220                                    const u8 *addr, int cmd, u16 reason_code,
2221                                    int local_state_change)
2222 {
2223         int ret = -1;
2224         struct nl_msg *msg;
2225
2226         msg = nlmsg_alloc();
2227         if (!msg)
2228                 return -1;
2229
2230         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2231
2232         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2233         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2234         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2235         if (local_state_change)
2236                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2237
2238         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2239         msg = NULL;
2240         if (ret) {
2241                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2242                            "(%s)", ret, strerror(-ret));
2243                 goto nla_put_failure;
2244         }
2245         ret = 0;
2246
2247 nla_put_failure:
2248         nlmsg_free(msg);
2249         return ret;
2250 }
2251
2252
2253 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2254                                          const u8 *addr, int reason_code)
2255 {
2256         wpa_printf(MSG_DEBUG, "%s", __func__);
2257         drv->associated = 0;
2258         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2259                                        reason_code, 0);
2260 }
2261
2262
2263 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2264                                              int reason_code)
2265 {
2266         struct i802_bss *bss = priv;
2267         struct wpa_driver_nl80211_data *drv = bss->drv;
2268         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2269                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2270         wpa_printf(MSG_DEBUG, "%s", __func__);
2271         drv->associated = 0;
2272         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2273                                        reason_code, 0);
2274 }
2275
2276
2277 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2278                                            int reason_code)
2279 {
2280         struct i802_bss *bss = priv;
2281         struct wpa_driver_nl80211_data *drv = bss->drv;
2282         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2283                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2284         wpa_printf(MSG_DEBUG, "%s", __func__);
2285         drv->associated = 0;
2286         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2287                                        reason_code, 0);
2288 }
2289
2290
2291 static int wpa_driver_nl80211_authenticate(
2292         void *priv, struct wpa_driver_auth_params *params)
2293 {
2294         struct i802_bss *bss = priv;
2295         struct wpa_driver_nl80211_data *drv = bss->drv;
2296         int ret = -1, i;
2297         struct nl_msg *msg;
2298         enum nl80211_auth_type type;
2299         int count = 0;
2300
2301         drv->associated = 0;
2302         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2303         /* FIX: IBSS mode */
2304         if (drv->nlmode != NL80211_IFTYPE_STATION)
2305                 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2306
2307         if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2308                 return -1;
2309
2310 retry:
2311         msg = nlmsg_alloc();
2312         if (!msg)
2313                 return -1;
2314
2315         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2316                    drv->ifindex);
2317
2318         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2319                     NL80211_CMD_AUTHENTICATE, 0);
2320
2321         for (i = 0; i < 4; i++) {
2322                 if (!params->wep_key[i])
2323                         continue;
2324                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2325                                            NULL, i,
2326                                            i == params->wep_tx_keyidx, NULL, 0,
2327                                            params->wep_key[i],
2328                                            params->wep_key_len[i]);
2329                 if (params->wep_tx_keyidx != i)
2330                         continue;
2331                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2332                                params->wep_key[i], params->wep_key_len[i])) {
2333                         nlmsg_free(msg);
2334                         return -1;
2335                 }
2336         }
2337
2338         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2339         if (params->bssid) {
2340                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2341                            MAC2STR(params->bssid));
2342                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2343         }
2344         if (params->freq) {
2345                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2346                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2347         }
2348         if (params->ssid) {
2349                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2350                                   params->ssid, params->ssid_len);
2351                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2352                         params->ssid);
2353         }
2354         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2355         if (params->ie)
2356                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2357         /*
2358          * TODO: if multiple auth_alg options enabled, try them one by one if
2359          * the AP rejects authentication due to unknown auth alg
2360          */
2361         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2362                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2363         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2364                 type = NL80211_AUTHTYPE_SHARED_KEY;
2365         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2366                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2367         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2368                 type = NL80211_AUTHTYPE_FT;
2369         else
2370                 goto nla_put_failure;
2371         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2372         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2373         if (params->local_state_change) {
2374                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2375                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2376         }
2377
2378         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2379         msg = NULL;
2380         if (ret) {
2381                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2382                            "(%s)", ret, strerror(-ret));
2383                 count++;
2384                 if (ret == -EALREADY && count == 1 && params->bssid &&
2385                     !params->local_state_change) {
2386                         /*
2387                          * mac80211 does not currently accept new
2388                          * authentication if we are already authenticated. As a
2389                          * workaround, force deauthentication and try again.
2390                          */
2391                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2392                                    "after forced deauthentication");
2393                         wpa_driver_nl80211_deauthenticate(
2394                                 bss, params->bssid,
2395                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2396                         nlmsg_free(msg);
2397                         goto retry;
2398                 }
2399                 goto nla_put_failure;
2400         }
2401         ret = 0;
2402         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2403                    "successfully");
2404
2405 nla_put_failure:
2406         nlmsg_free(msg);
2407         return ret;
2408 }
2409
2410
2411 struct phy_info_arg {
2412         u16 *num_modes;
2413         struct hostapd_hw_modes *modes;
2414 };
2415
2416 static int phy_info_handler(struct nl_msg *msg, void *arg)
2417 {
2418         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2419         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2420         struct phy_info_arg *phy_info = arg;
2421
2422         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2423
2424         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2425         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2426                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2427                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2428                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2429                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2430                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2431                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2432         };
2433
2434         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2435         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2436                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2437                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2438         };
2439
2440         struct nlattr *nl_band;
2441         struct nlattr *nl_freq;
2442         struct nlattr *nl_rate;
2443         int rem_band, rem_freq, rem_rate;
2444         struct hostapd_hw_modes *mode;
2445         int idx, mode_is_set;
2446
2447         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2448                   genlmsg_attrlen(gnlh, 0), NULL);
2449
2450         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2451                 return NL_SKIP;
2452
2453         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2454                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2455                 if (!mode)
2456                         return NL_SKIP;
2457                 phy_info->modes = mode;
2458
2459                 mode_is_set = 0;
2460
2461                 mode = &phy_info->modes[*(phy_info->num_modes)];
2462                 memset(mode, 0, sizeof(*mode));
2463                 *(phy_info->num_modes) += 1;
2464
2465                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2466                           nla_len(nl_band), NULL);
2467
2468                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2469                         mode->ht_capab = nla_get_u16(
2470                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2471                 }
2472
2473                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2474                         mode->a_mpdu_params |= nla_get_u8(
2475                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2476                                 0x03;
2477                 }
2478
2479                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2480                         mode->a_mpdu_params |= nla_get_u8(
2481                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2482                                 2;
2483                 }
2484
2485                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2486                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2487                         u8 *mcs;
2488                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2489                         os_memcpy(mode->mcs_set, mcs, 16);
2490                 }
2491
2492                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2493                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2494                                   nla_len(nl_freq), freq_policy);
2495                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2496                                 continue;
2497                         mode->num_channels++;
2498                 }
2499
2500                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2501                 if (!mode->channels)
2502                         return NL_SKIP;
2503
2504                 idx = 0;
2505
2506                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2507                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2508                                   nla_len(nl_freq), freq_policy);
2509                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2510                                 continue;
2511
2512                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2513                         mode->channels[idx].flag = 0;
2514
2515                         if (!mode_is_set) {
2516                                 /* crude heuristic */
2517                                 if (mode->channels[idx].freq < 4000)
2518                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2519                                 else
2520                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2521                                 mode_is_set = 1;
2522                         }
2523
2524                         /* crude heuristic */
2525                         if (mode->channels[idx].freq < 4000)
2526                                 if (mode->channels[idx].freq == 2484)
2527                                         mode->channels[idx].chan = 14;
2528                                 else
2529                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2530                         else
2531                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2532
2533                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2534                                 mode->channels[idx].flag |=
2535                                         HOSTAPD_CHAN_DISABLED;
2536                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2537                                 mode->channels[idx].flag |=
2538                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2539                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2540                                 mode->channels[idx].flag |=
2541                                         HOSTAPD_CHAN_NO_IBSS;
2542                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2543                                 mode->channels[idx].flag |=
2544                                         HOSTAPD_CHAN_RADAR;
2545
2546                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2547                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2548                                 mode->channels[idx].max_tx_power =
2549                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2550
2551                         idx++;
2552                 }
2553
2554                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2555                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2556                                   nla_len(nl_rate), rate_policy);
2557                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2558                                 continue;
2559                         mode->num_rates++;
2560                 }
2561
2562                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2563                 if (!mode->rates)
2564                         return NL_SKIP;
2565
2566                 idx = 0;
2567
2568                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2569                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2570                                   nla_len(nl_rate), rate_policy);
2571                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2572                                 continue;
2573                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2574
2575                         /* crude heuristic */
2576                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2577                             mode->rates[idx] > 200)
2578                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2579
2580                         idx++;
2581                 }
2582         }
2583
2584         return NL_SKIP;
2585 }
2586
2587 static struct hostapd_hw_modes *
2588 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2589 {
2590         u16 m;
2591         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2592         int i, mode11g_idx = -1;
2593
2594         /* If only 802.11g mode is included, use it to construct matching
2595          * 802.11b mode data. */
2596
2597         for (m = 0; m < *num_modes; m++) {
2598                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2599                         return modes; /* 802.11b already included */
2600                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2601                         mode11g_idx = m;
2602         }
2603
2604         if (mode11g_idx < 0)
2605                 return modes; /* 2.4 GHz band not supported at all */
2606
2607         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2608         if (nmodes == NULL)
2609                 return modes; /* Could not add 802.11b mode */
2610
2611         mode = &nmodes[*num_modes];
2612         os_memset(mode, 0, sizeof(*mode));
2613         (*num_modes)++;
2614         modes = nmodes;
2615
2616         mode->mode = HOSTAPD_MODE_IEEE80211B;
2617
2618         mode11g = &modes[mode11g_idx];
2619         mode->num_channels = mode11g->num_channels;
2620         mode->channels = os_malloc(mode11g->num_channels *
2621                                    sizeof(struct hostapd_channel_data));
2622         if (mode->channels == NULL) {
2623                 (*num_modes)--;
2624                 return modes; /* Could not add 802.11b mode */
2625         }
2626         os_memcpy(mode->channels, mode11g->channels,
2627                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
2628
2629         mode->num_rates = 0;
2630         mode->rates = os_malloc(4 * sizeof(int));
2631         if (mode->rates == NULL) {
2632                 os_free(mode->channels);
2633                 (*num_modes)--;
2634                 return modes; /* Could not add 802.11b mode */
2635         }
2636
2637         for (i = 0; i < mode11g->num_rates; i++) {
2638                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2639                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2640                         continue;
2641                 mode->rates[mode->num_rates] = mode11g->rates[i];
2642                 mode->num_rates++;
2643                 if (mode->num_rates == 4)
2644                         break;
2645         }
2646
2647         if (mode->num_rates == 0) {
2648                 os_free(mode->channels);
2649                 os_free(mode->rates);
2650                 (*num_modes)--;
2651                 return modes; /* No 802.11b rates */
2652         }
2653
2654         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2655                    "information");
2656
2657         return modes;
2658 }
2659
2660
2661 static struct hostapd_hw_modes *
2662 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2663 {
2664         struct i802_bss *bss = priv;
2665         struct wpa_driver_nl80211_data *drv = bss->drv;
2666         struct nl_msg *msg;
2667         struct phy_info_arg result = {
2668                 .num_modes = num_modes,
2669                 .modes = NULL,
2670         };
2671
2672         *num_modes = 0;
2673         *flags = 0;
2674
2675         msg = nlmsg_alloc();
2676         if (!msg)
2677                 return NULL;
2678
2679         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2680                     0, NL80211_CMD_GET_WIPHY, 0);
2681
2682         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2683
2684         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2685                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2686  nla_put_failure:
2687         return NULL;
2688 }
2689
2690
2691 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2692                                          const void *data, size_t len,
2693                                          int encrypt)
2694 {
2695         __u8 rtap_hdr[] = {
2696                 0x00, 0x00, /* radiotap version */
2697                 0x0e, 0x00, /* radiotap length */
2698                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2699                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2700                 0x00,       /* padding */
2701                 0x00, 0x00, /* RX and TX flags to indicate that */
2702                 0x00, 0x00, /* this is the injected frame directly */
2703         };
2704         struct iovec iov[2] = {
2705                 {
2706                         .iov_base = &rtap_hdr,
2707                         .iov_len = sizeof(rtap_hdr),
2708                 },
2709                 {
2710                         .iov_base = (void *) data,
2711                         .iov_len = len,
2712                 }
2713         };
2714         struct msghdr msg = {
2715                 .msg_name = NULL,
2716                 .msg_namelen = 0,
2717                 .msg_iov = iov,
2718                 .msg_iovlen = 2,
2719                 .msg_control = NULL,
2720                 .msg_controllen = 0,
2721                 .msg_flags = 0,
2722         };
2723
2724         if (encrypt)
2725                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2726
2727         return sendmsg(drv->monitor_sock, &msg, 0);
2728 }
2729
2730
2731 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2732                                         size_t data_len)
2733 {
2734         struct i802_bss *bss = priv;
2735         struct wpa_driver_nl80211_data *drv = bss->drv;
2736         struct ieee80211_mgmt *mgmt;
2737         int encrypt = 1;
2738         u16 fc;
2739
2740         mgmt = (struct ieee80211_mgmt *) data;
2741         fc = le_to_host16(mgmt->frame_control);
2742
2743         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2744             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2745                 /*
2746                  * Only one of the authentication frame types is encrypted.
2747                  * In order for static WEP encryption to work properly (i.e.,
2748                  * to not encrypt the frame), we need to tell mac80211 about
2749                  * the frames that must not be encrypted.
2750                  */
2751                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2752                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2753                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2754                         encrypt = 0;
2755         }
2756
2757         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2758 }
2759
2760
2761 static int wpa_driver_nl80211_set_beacon(void *priv,
2762                                          const u8 *head, size_t head_len,
2763                                          const u8 *tail, size_t tail_len,
2764                                          int dtim_period, int beacon_int)
2765 {
2766         struct i802_bss *bss = priv;
2767         struct wpa_driver_nl80211_data *drv = bss->drv;
2768         struct nl_msg *msg;
2769         u8 cmd = NL80211_CMD_NEW_BEACON;
2770         int ret;
2771         int beacon_set;
2772         int ifindex = if_nametoindex(bss->ifname);
2773
2774         beacon_set = bss->beacon_set;
2775
2776         msg = nlmsg_alloc();
2777         if (!msg)
2778                 return -ENOMEM;
2779
2780         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2781                    beacon_set);
2782         if (beacon_set)
2783                 cmd = NL80211_CMD_SET_BEACON;
2784
2785         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2786                     0, cmd, 0);
2787         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2788         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2789         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2790         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2791         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2792
2793         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2794         if (ret) {
2795                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2796                            ret, strerror(-ret));
2797         } else {
2798                 bss->beacon_set = 1;
2799         }
2800         return ret;
2801  nla_put_failure:
2802         return -ENOBUFS;
2803 }
2804
2805
2806 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2807                                        int freq, int ht_enabled,
2808                                        int sec_channel_offset)
2809 {
2810         struct nl_msg *msg;
2811         int ret;
2812
2813         msg = nlmsg_alloc();
2814         if (!msg)
2815                 return -1;
2816
2817         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2818                     NL80211_CMD_SET_WIPHY, 0);
2819
2820         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2821         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2822         if (ht_enabled) {
2823                 switch (sec_channel_offset) {
2824                 case -1:
2825                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2826                                     NL80211_CHAN_HT40MINUS);
2827                         break;
2828                 case 1:
2829                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2830                                     NL80211_CHAN_HT40PLUS);
2831                         break;
2832                 default:
2833                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2834                                     NL80211_CHAN_HT20);
2835                         break;
2836                 }
2837         }
2838
2839         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2840         if (ret == 0)
2841                 return 0;
2842         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2843                    "%d (%s)", freq, ret, strerror(-ret));
2844 nla_put_failure:
2845         return -1;
2846 }
2847
2848
2849 static int wpa_driver_nl80211_sta_add(void *priv,
2850                                       struct hostapd_sta_add_params *params)
2851 {
2852         struct i802_bss *bss = priv;
2853         struct wpa_driver_nl80211_data *drv = bss->drv;
2854         struct nl_msg *msg;
2855         int ret = -ENOBUFS;
2856
2857         msg = nlmsg_alloc();
2858         if (!msg)
2859                 return -ENOMEM;
2860
2861         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2862                     0, NL80211_CMD_NEW_STATION, 0);
2863
2864         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
2865         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2866         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2867         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2868                 params->supp_rates);
2869         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2870                     params->listen_interval);
2871         if (params->ht_capabilities) {
2872                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2873                         sizeof(*params->ht_capabilities),
2874                         params->ht_capabilities);
2875         }
2876
2877         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2878         if (ret)
2879                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2880                            "result: %d (%s)", ret, strerror(-ret));
2881         if (ret == -EEXIST)
2882                 ret = 0;
2883  nla_put_failure:
2884         return ret;
2885 }
2886
2887
2888 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2889 {
2890         struct i802_bss *bss = priv;
2891         struct wpa_driver_nl80211_data *drv = bss->drv;
2892         struct nl_msg *msg;
2893         int ret;
2894
2895         msg = nlmsg_alloc();
2896         if (!msg)
2897                 return -ENOMEM;
2898
2899         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2900                     0, NL80211_CMD_DEL_STATION, 0);
2901
2902         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2903                     if_nametoindex(bss->ifname));
2904         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2905
2906         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2907         if (ret == -ENOENT)
2908                 return 0;
2909         return ret;
2910  nla_put_failure:
2911         return -ENOBUFS;
2912 }
2913
2914
2915 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2916                                  int ifidx)
2917 {
2918         struct nl_msg *msg;
2919
2920         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2921
2922 #ifdef HOSTAPD
2923         /* stop listening for EAPOL on this interface */
2924         del_ifidx(drv, ifidx);
2925 #endif /* HOSTAPD */
2926
2927         msg = nlmsg_alloc();
2928         if (!msg)
2929                 goto nla_put_failure;
2930
2931         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2932                     0, NL80211_CMD_DEL_INTERFACE, 0);
2933         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2934
2935         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2936                 return;
2937  nla_put_failure:
2938         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
2939 }
2940
2941
2942 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2943                                      const char *ifname,
2944                                      enum nl80211_iftype iftype,
2945                                      const u8 *addr, int wds)
2946 {
2947         struct nl_msg *msg, *flags = NULL;
2948         int ifidx;
2949         int ret = -ENOBUFS;
2950
2951         msg = nlmsg_alloc();
2952         if (!msg)
2953                 return -1;
2954
2955         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2956                     0, NL80211_CMD_NEW_INTERFACE, 0);
2957         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2958         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2959         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2960
2961         if (iftype == NL80211_IFTYPE_MONITOR) {
2962                 int err;
2963
2964                 flags = nlmsg_alloc();
2965                 if (!flags)
2966                         goto nla_put_failure;
2967
2968                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2969
2970                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2971
2972                 nlmsg_free(flags);
2973
2974                 if (err)
2975                         goto nla_put_failure;
2976         } else if (wds) {
2977                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
2978         }
2979
2980         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2981         if (ret) {
2982  nla_put_failure:
2983                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2984                            ifname, ret, strerror(-ret));
2985                 return ret;
2986         }
2987
2988         ifidx = if_nametoindex(ifname);
2989         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2990                    ifname, ifidx);
2991
2992         if (ifidx <= 0)
2993                 return -1;
2994
2995 #ifdef HOSTAPD
2996         /* start listening for EAPOL on this interface */
2997         add_ifidx(drv, ifidx);
2998 #endif /* HOSTAPD */
2999
3000         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3001             linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3002                 nl80211_remove_iface(drv, ifidx);
3003                 return -1;
3004         }
3005
3006         return ifidx;
3007 }
3008
3009
3010 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3011                                 const char *ifname, enum nl80211_iftype iftype,
3012                                 const u8 *addr, int wds)
3013 {
3014         int ret;
3015
3016         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3017
3018         /* if error occured and interface exists already */
3019         if (ret == -ENFILE && if_nametoindex(ifname)) {
3020                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3021
3022                 /* Try to remove the interface that was already there. */
3023                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3024
3025                 /* Try to create the interface again */
3026                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3027                                                 wds);
3028         }
3029
3030         if (ret >= 0 && drv->disable_11b_rates)
3031                 nl80211_disable_11b_rates(drv, ret, 1);
3032
3033         return ret;
3034 }
3035
3036
3037 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3038 {
3039         struct ieee80211_hdr *hdr;
3040         u16 fc;
3041         union wpa_event_data event;
3042
3043         hdr = (struct ieee80211_hdr *) buf;
3044         fc = le_to_host16(hdr->frame_control);
3045
3046         os_memset(&event, 0, sizeof(event));
3047         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3048         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3049         event.tx_status.dst = hdr->addr1;
3050         event.tx_status.data = buf;
3051         event.tx_status.data_len = len;
3052         event.tx_status.ack = ok;
3053         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3054 }
3055
3056
3057 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3058                              u8 *buf, size_t len)
3059 {
3060         union wpa_event_data event;
3061         os_memset(&event, 0, sizeof(event));
3062         event.rx_from_unknown.frame = buf;
3063         event.rx_from_unknown.len = len;
3064         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3065 }
3066
3067
3068 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3069                          u8 *buf, size_t len, int datarate, int ssi_signal)
3070 {
3071         struct ieee80211_hdr *hdr;
3072         u16 fc;
3073         union wpa_event_data event;
3074
3075         hdr = (struct ieee80211_hdr *) buf;
3076         fc = le_to_host16(hdr->frame_control);
3077
3078         switch (WLAN_FC_GET_TYPE(fc)) {
3079         case WLAN_FC_TYPE_MGMT:
3080                 os_memset(&event, 0, sizeof(event));
3081                 event.rx_mgmt.frame = buf;
3082                 event.rx_mgmt.frame_len = len;
3083                 event.rx_mgmt.datarate = datarate;
3084                 event.rx_mgmt.ssi_signal = ssi_signal;
3085                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3086                 break;
3087         case WLAN_FC_TYPE_CTRL:
3088                 /* can only get here with PS-Poll frames */
3089                 wpa_printf(MSG_DEBUG, "CTRL");
3090                 from_unknown_sta(drv, buf, len);
3091                 break;
3092         case WLAN_FC_TYPE_DATA:
3093                 from_unknown_sta(drv, buf, len);
3094                 break;
3095         }
3096 }
3097
3098
3099 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3100 {
3101         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3102         int len;
3103         unsigned char buf[3000];
3104         struct ieee80211_radiotap_iterator iter;
3105         int ret;
3106         int datarate = 0, ssi_signal = 0;
3107         int injected = 0, failed = 0, rxflags = 0;
3108
3109         len = recv(sock, buf, sizeof(buf), 0);
3110         if (len < 0) {
3111                 perror("recv");
3112                 return;
3113         }
3114
3115         if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3116                 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3117                            "frame since Probe Request reporting is disabled");
3118                 return;
3119         }
3120
3121         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3122                 printf("received invalid radiotap frame\n");
3123                 return;
3124         }
3125
3126         while (1) {
3127                 ret = ieee80211_radiotap_iterator_next(&iter);
3128                 if (ret == -ENOENT)
3129                         break;
3130                 if (ret) {
3131                         printf("received invalid radiotap frame (%d)\n", ret);
3132                         return;
3133                 }
3134                 switch (iter.this_arg_index) {
3135                 case IEEE80211_RADIOTAP_FLAGS:
3136                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3137                                 len -= 4;
3138                         break;
3139                 case IEEE80211_RADIOTAP_RX_FLAGS:
3140                         rxflags = 1;
3141                         break;
3142                 case IEEE80211_RADIOTAP_TX_FLAGS:
3143                         injected = 1;
3144                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3145                                         IEEE80211_RADIOTAP_F_TX_FAIL;
3146                         break;
3147                 case IEEE80211_RADIOTAP_DATA_RETRIES:
3148                         break;
3149                 case IEEE80211_RADIOTAP_CHANNEL:
3150                         /* TODO: convert from freq/flags to channel number */
3151                         break;
3152                 case IEEE80211_RADIOTAP_RATE:
3153                         datarate = *iter.this_arg * 5;
3154                         break;
3155                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3156                         ssi_signal = *iter.this_arg;
3157                         break;
3158                 }
3159         }
3160
3161         if (rxflags && injected)
3162                 return;
3163
3164         if (!injected)
3165                 handle_frame(drv, buf + iter.max_length,
3166                              len - iter.max_length, datarate, ssi_signal);
3167         else
3168                 handle_tx_callback(drv->ctx, buf + iter.max_length,
3169                                    len - iter.max_length, !failed);
3170 }
3171
3172
3173 /*
3174  * we post-process the filter code later and rewrite
3175  * this to the offset to the last instruction
3176  */
3177 #define PASS    0xFF
3178 #define FAIL    0xFE
3179
3180 static struct sock_filter msock_filter_insns[] = {
3181         /*
3182          * do a little-endian load of the radiotap length field
3183          */
3184         /* load lower byte into A */
3185         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
3186         /* put it into X (== index register) */
3187         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3188         /* load upper byte into A */
3189         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
3190         /* left-shift it by 8 */
3191         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3192         /* or with X */
3193         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3194         /* put result into X */
3195         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3196
3197         /*
3198          * Allow management frames through, this also gives us those
3199          * management frames that we sent ourselves with status
3200          */
3201         /* load the lower byte of the IEEE 802.11 frame control field */
3202         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
3203         /* mask off frame type and version */
3204         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3205         /* accept frame if it's both 0, fall through otherwise */
3206         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3207
3208         /*
3209          * TODO: add a bit to radiotap RX flags that indicates
3210          * that the sending station is not associated, then
3211          * add a filter here that filters on our DA and that flag
3212          * to allow us to deauth frames to that bad station.
3213          *
3214          * Not a regression -- we didn't do it before either.
3215          */
3216
3217 #if 0
3218         /*
3219          * drop non-data frames
3220          */
3221         /* load the lower byte of the frame control field */
3222         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3223         /* mask off QoS bit */
3224         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
3225         /* drop non-data frames */
3226         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
3227 #endif
3228         /* load the upper byte of the frame control field */
3229         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
3230         /* mask off toDS/fromDS */
3231         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
3232         /* accept WDS frames */
3233         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
3234
3235         /*
3236          * add header length to index
3237          */
3238         /* load the lower byte of the frame control field */
3239         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3240         /* mask off QoS bit */
3241         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
3242         /* right shift it by 6 to give 0 or 2 */
3243         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
3244         /* add data frame header length */
3245         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
3246         /* add index, was start of 802.11 header */
3247         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
3248         /* move to index, now start of LL header */
3249         BPF_STMT(BPF_MISC | BPF_TAX, 0),
3250
3251         /*
3252          * Accept empty data frames, we use those for
3253          * polling activity.
3254          */
3255         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
3256         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3257
3258         /*
3259          * Accept EAPOL frames
3260          */
3261         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
3262         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3263         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
3264         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3265
3266         /* keep these last two statements or change the code below */
3267         /* return 0 == "DROP" */
3268         BPF_STMT(BPF_RET | BPF_K, 0),
3269         /* return ~0 == "keep all" */
3270         BPF_STMT(BPF_RET | BPF_K, ~0),
3271 };
3272
3273 static struct sock_fprog msock_filter = {
3274         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3275         .filter = msock_filter_insns,
3276 };
3277
3278
3279 static int add_monitor_filter(int s)
3280 {
3281         int idx;
3282
3283         /* rewrite all PASS/FAIL jump offsets */
3284         for (idx = 0; idx < msock_filter.len; idx++) {
3285                 struct sock_filter *insn = &msock_filter_insns[idx];
3286
3287                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3288                         if (insn->code == (BPF_JMP|BPF_JA)) {
3289                                 if (insn->k == PASS)
3290                                         insn->k = msock_filter.len - idx - 2;
3291                                 else if (insn->k == FAIL)
3292                                         insn->k = msock_filter.len - idx - 3;
3293                         }
3294
3295                         if (insn->jt == PASS)
3296                                 insn->jt = msock_filter.len - idx - 2;
3297                         else if (insn->jt == FAIL)
3298                                 insn->jt = msock_filter.len - idx - 3;
3299
3300                         if (insn->jf == PASS)
3301                                 insn->jf = msock_filter.len - idx - 2;
3302                         else if (insn->jf == FAIL)
3303                                 insn->jf = msock_filter.len - idx - 3;
3304                 }
3305         }
3306
3307         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3308                        &msock_filter, sizeof(msock_filter))) {
3309                 perror("SO_ATTACH_FILTER");
3310                 return -1;
3311         }
3312
3313         return 0;
3314 }
3315
3316
3317 static void nl80211_remove_monitor_interface(
3318         struct wpa_driver_nl80211_data *drv)
3319 {
3320         if (drv->monitor_ifidx >= 0) {
3321                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3322                 drv->monitor_ifidx = -1;
3323         }
3324         if (drv->monitor_sock >= 0) {
3325                 eloop_unregister_read_sock(drv->monitor_sock);
3326                 close(drv->monitor_sock);
3327                 drv->monitor_sock = -1;
3328         }
3329 }
3330
3331
3332 static int
3333 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3334 {
3335         char buf[IFNAMSIZ];
3336         struct sockaddr_ll ll;
3337         int optval;
3338         socklen_t optlen;
3339
3340         snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3341         buf[IFNAMSIZ - 1] = '\0';
3342
3343         drv->monitor_ifidx =
3344                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3345                                      0);
3346
3347         if (drv->monitor_ifidx < 0)
3348                 return -1;
3349
3350         if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3351                 goto error;
3352
3353         memset(&ll, 0, sizeof(ll));
3354         ll.sll_family = AF_PACKET;
3355         ll.sll_ifindex = drv->monitor_ifidx;
3356         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3357         if (drv->monitor_sock < 0) {
3358                 perror("socket[PF_PACKET,SOCK_RAW]");
3359                 goto error;
3360         }
3361
3362         if (add_monitor_filter(drv->monitor_sock)) {
3363                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3364                            "interface; do filtering in user space");
3365                 /* This works, but will cost in performance. */
3366         }
3367
3368         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3369                 perror("monitor socket bind");
3370                 goto error;
3371         }
3372
3373         optlen = sizeof(optval);
3374         optval = 20;
3375         if (setsockopt
3376             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3377                 perror("Failed to set socket priority");
3378                 goto error;
3379         }
3380
3381         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3382                                      drv, NULL)) {
3383                 printf("Could not register monitor read socket\n");
3384                 goto error;
3385         }
3386
3387         return 0;
3388  error:
3389         nl80211_remove_monitor_interface(drv);
3390         return -1;
3391 }
3392
3393
3394 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3395
3396 static int wpa_driver_nl80211_hapd_send_eapol(
3397         void *priv, const u8 *addr, const u8 *data,
3398         size_t data_len, int encrypt, const u8 *own_addr)
3399 {
3400         struct i802_bss *bss = priv;
3401         struct wpa_driver_nl80211_data *drv = bss->drv;
3402         struct ieee80211_hdr *hdr;
3403         size_t len;
3404         u8 *pos;
3405         int res;
3406 #if 0 /* FIX */
3407         int qos = sta->flags & WPA_STA_WMM;
3408 #else
3409         int qos = 0;
3410 #endif
3411
3412         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3413                 data_len;
3414         hdr = os_zalloc(len);
3415         if (hdr == NULL) {
3416                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3417                        (unsigned long) len);
3418                 return -1;
3419         }
3420
3421         hdr->frame_control =
3422                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3423         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3424         if (encrypt)
3425                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3426 #if 0 /* To be enabled if qos determination is added above */
3427         if (qos) {
3428                 hdr->frame_control |=
3429                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3430         }
3431 #endif
3432
3433         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3434         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3435         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3436         pos = (u8 *) (hdr + 1);
3437
3438 #if 0 /* To be enabled if qos determination is added above */
3439         if (qos) {
3440                 /* add an empty QoS header if needed */
3441                 pos[0] = 0;
3442                 pos[1] = 0;
3443                 pos += 2;
3444         }
3445 #endif
3446
3447         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3448         pos += sizeof(rfc1042_header);
3449         WPA_PUT_BE16(pos, ETH_P_PAE);
3450         pos += 2;
3451         memcpy(pos, data, data_len);
3452
3453         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3454         if (res < 0) {
3455                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3456                            "failed: %d (%s)",
3457                            (unsigned long) len, errno, strerror(errno));
3458         }
3459         os_free(hdr);
3460
3461         return res;
3462 }
3463
3464
3465 static u32 sta_flags_nl80211(int flags)
3466 {
3467         u32 f = 0;
3468
3469         if (flags & WPA_STA_AUTHORIZED)
3470                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3471         if (flags & WPA_STA_WMM)
3472                 f |= BIT(NL80211_STA_FLAG_WME);
3473         if (flags & WPA_STA_SHORT_PREAMBLE)
3474                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3475         if (flags & WPA_STA_MFP)
3476                 f |= BIT(NL80211_STA_FLAG_MFP);
3477
3478         return f;
3479 }
3480
3481
3482 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3483                                             int total_flags,
3484                                             int flags_or, int flags_and)
3485 {
3486         struct i802_bss *bss = priv;
3487         struct wpa_driver_nl80211_data *drv = bss->drv;
3488         struct nl_msg *msg, *flags = NULL;
3489         struct nl80211_sta_flag_update upd;
3490
3491         msg = nlmsg_alloc();
3492         if (!msg)
3493                 return -ENOMEM;
3494
3495         flags = nlmsg_alloc();
3496         if (!flags) {
3497                 nlmsg_free(msg);
3498                 return -ENOMEM;
3499         }
3500
3501         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3502                     0, NL80211_CMD_SET_STATION, 0);
3503
3504         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3505                     if_nametoindex(bss->ifname));
3506         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3507
3508         /*
3509          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3510          * can be removed eventually.
3511          */
3512         if (total_flags & WPA_STA_AUTHORIZED)
3513                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3514
3515         if (total_flags & WPA_STA_WMM)
3516                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3517
3518         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3519                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3520
3521         if (total_flags & WPA_STA_MFP)
3522                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3523
3524         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3525                 goto nla_put_failure;
3526
3527         os_memset(&upd, 0, sizeof(upd));
3528         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3529         upd.set = sta_flags_nl80211(flags_or);
3530         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3531
3532         nlmsg_free(flags);
3533
3534         return send_and_recv_msgs(drv, msg, NULL, NULL);
3535  nla_put_failure:
3536         nlmsg_free(flags);
3537         return -ENOBUFS;
3538 }
3539
3540
3541 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3542                                  struct wpa_driver_associate_params *params)
3543 {
3544         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3545             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3546                 nl80211_remove_monitor_interface(drv);
3547                 return -1;
3548         }
3549
3550         /* TODO: setup monitor interface (and add code somewhere to remove this
3551          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3552
3553         return 0;
3554 }
3555
3556
3557 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3558 {
3559         struct nl_msg *msg;
3560         int ret = -1;
3561
3562         msg = nlmsg_alloc();
3563         if (!msg)
3564                 return -1;
3565
3566         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3567                     NL80211_CMD_LEAVE_IBSS, 0);
3568         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3569         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3570         msg = NULL;
3571         if (ret) {
3572                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3573                            "(%s)", ret, strerror(-ret));
3574                 goto nla_put_failure;
3575         }
3576
3577         ret = 0;
3578         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3579
3580 nla_put_failure:
3581         nlmsg_free(msg);
3582         return ret;
3583 }
3584
3585
3586 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3587                                    struct wpa_driver_associate_params *params)
3588 {
3589         struct nl_msg *msg;
3590         int ret = -1;
3591         int count = 0;
3592
3593         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3594
3595         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3596                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3597                            "IBSS mode");
3598                 return -1;
3599         }
3600
3601 retry:
3602         msg = nlmsg_alloc();
3603         if (!msg)
3604                 return -1;
3605
3606         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3607                     NL80211_CMD_JOIN_IBSS, 0);
3608         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3609
3610         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3611                 goto nla_put_failure;
3612
3613         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3614                           params->ssid, params->ssid_len);
3615         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3616                 params->ssid);
3617         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3618         drv->ssid_len = params->ssid_len;
3619
3620         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3621         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3622
3623         ret = nl80211_set_conn_keys(params, msg);
3624         if (ret)
3625                 goto nla_put_failure;
3626
3627         if (params->wpa_ie) {
3628                 wpa_hexdump(MSG_DEBUG,
3629                             "  * Extra IEs for Beacon/Probe Response frames",
3630                             params->wpa_ie, params->wpa_ie_len);
3631                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3632                         params->wpa_ie);
3633         }
3634
3635         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3636         msg = NULL;
3637         if (ret) {
3638                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3639                            ret, strerror(-ret));
3640                 count++;
3641                 if (ret == -EALREADY && count == 1) {
3642                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3643                                    "forced leave");
3644                         nl80211_leave_ibss(drv);
3645                         nlmsg_free(msg);
3646                         goto retry;
3647                 }
3648
3649                 goto nla_put_failure;
3650         }
3651         ret = 0;
3652         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3653
3654 nla_put_failure:
3655         nlmsg_free(msg);
3656         return ret;
3657 }
3658
3659
3660 static int wpa_driver_nl80211_connect(
3661         struct wpa_driver_nl80211_data *drv,
3662         struct wpa_driver_associate_params *params)
3663 {
3664         struct nl_msg *msg;
3665         enum nl80211_auth_type type;
3666         int ret = 0;
3667
3668         msg = nlmsg_alloc();
3669         if (!msg)
3670                 return -1;
3671
3672         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3673         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3674                     NL80211_CMD_CONNECT, 0);
3675
3676         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3677         if (params->bssid) {
3678                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3679                            MAC2STR(params->bssid));
3680                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3681         }
3682         if (params->freq) {
3683                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3684                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3685         }
3686         if (params->ssid) {
3687                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3688                                   params->ssid, params->ssid_len);
3689                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3690                         params->ssid);
3691                 if (params->ssid_len > sizeof(drv->ssid))
3692                         goto nla_put_failure;
3693                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3694                 drv->ssid_len = params->ssid_len;
3695         }
3696         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3697         if (params->wpa_ie)
3698                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3699                         params->wpa_ie);
3700
3701         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3702                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3703         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3704                 type = NL80211_AUTHTYPE_SHARED_KEY;
3705         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3706                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3707         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3708                 type = NL80211_AUTHTYPE_FT;
3709         else
3710                 goto nla_put_failure;
3711
3712         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3713         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3714
3715         if (params->wpa_ie && params->wpa_ie_len) {
3716                 enum nl80211_wpa_versions ver;
3717
3718                 if (params->wpa_ie[0] == WLAN_EID_RSN)
3719                         ver = NL80211_WPA_VERSION_2;
3720                 else
3721                         ver = NL80211_WPA_VERSION_1;
3722
3723                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
3724                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3725         }
3726
3727         if (params->pairwise_suite != CIPHER_NONE) {
3728                 int cipher;
3729
3730                 switch (params->pairwise_suite) {
3731                 case CIPHER_WEP40:
3732                         cipher = WLAN_CIPHER_SUITE_WEP40;
3733                         break;
3734                 case CIPHER_WEP104:
3735                         cipher = WLAN_CIPHER_SUITE_WEP104;
3736                         break;
3737                 case CIPHER_CCMP:
3738                         cipher = WLAN_CIPHER_SUITE_CCMP;
3739                         break;
3740                 case CIPHER_TKIP:
3741                 default:
3742                         cipher = WLAN_CIPHER_SUITE_TKIP;
3743                         break;
3744                 }
3745                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3746         }
3747
3748         if (params->group_suite != CIPHER_NONE) {
3749                 int cipher;
3750
3751                 switch (params->group_suite) {
3752                 case CIPHER_WEP40:
3753                         cipher = WLAN_CIPHER_SUITE_WEP40;
3754                         break;
3755                 case CIPHER_WEP104:
3756                         cipher = WLAN_CIPHER_SUITE_WEP104;
3757                         break;
3758                 case CIPHER_CCMP:
3759                         cipher = WLAN_CIPHER_SUITE_CCMP;
3760                         break;
3761                 case CIPHER_TKIP:
3762                 default:
3763                         cipher = WLAN_CIPHER_SUITE_TKIP;
3764                         break;
3765                 }
3766                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3767         }
3768
3769         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3770             params->key_mgmt_suite == KEY_MGMT_PSK) {
3771                 int mgmt = WLAN_AKM_SUITE_PSK;
3772
3773                 switch (params->key_mgmt_suite) {
3774                 case KEY_MGMT_802_1X:
3775                         mgmt = WLAN_AKM_SUITE_8021X;
3776                         break;
3777                 case KEY_MGMT_PSK:
3778                 default:
3779                         mgmt = WLAN_AKM_SUITE_PSK;
3780                         break;
3781                 }
3782                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3783         }
3784
3785         ret = nl80211_set_conn_keys(params, msg);
3786         if (ret)
3787                 goto nla_put_failure;
3788
3789         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3790         msg = NULL;
3791         if (ret) {
3792                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3793                            "(%s)", ret, strerror(-ret));
3794                 goto nla_put_failure;
3795         }
3796         ret = 0;
3797         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3798
3799 nla_put_failure:
3800         nlmsg_free(msg);
3801         return ret;
3802
3803 }
3804
3805
3806 static int wpa_driver_nl80211_associate(
3807         void *priv, struct wpa_driver_associate_params *params)
3808 {
3809         struct i802_bss *bss = priv;
3810         struct wpa_driver_nl80211_data *drv = bss->drv;
3811         int ret = -1;
3812         struct nl_msg *msg;
3813
3814         if (params->mode == IEEE80211_MODE_AP)
3815                 return wpa_driver_nl80211_ap(drv, params);
3816
3817         if (params->mode == IEEE80211_MODE_IBSS)
3818                 return wpa_driver_nl80211_ibss(drv, params);
3819
3820         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3821                 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
3822                         return -1;
3823                 return wpa_driver_nl80211_connect(drv, params);
3824         }
3825
3826         drv->associated = 0;
3827
3828         msg = nlmsg_alloc();
3829         if (!msg)
3830                 return -1;
3831
3832         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3833                    drv->ifindex);
3834         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3835                     NL80211_CMD_ASSOCIATE, 0);
3836
3837         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3838         if (params->bssid) {
3839                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3840                            MAC2STR(params->bssid));
3841                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3842         }
3843         if (params->freq) {
3844                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3845                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3846                 drv->assoc_freq = params->freq;
3847         } else
3848                 drv->assoc_freq = 0;
3849         if (params->ssid) {
3850                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3851                                   params->ssid, params->ssid_len);
3852                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3853                         params->ssid);
3854                 if (params->ssid_len > sizeof(drv->ssid))
3855                         goto nla_put_failure;
3856                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3857                 drv->ssid_len = params->ssid_len;
3858         }
3859         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3860         if (params->wpa_ie)
3861                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3862                         params->wpa_ie);
3863
3864 #ifdef CONFIG_IEEE80211W
3865         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3866                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3867 #endif /* CONFIG_IEEE80211W */
3868
3869         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3870
3871         if (params->prev_bssid) {
3872                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
3873                            MAC2STR(params->prev_bssid));
3874                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3875                         params->prev_bssid);
3876         }
3877
3878         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3879         msg = NULL;
3880         if (ret) {
3881                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3882                            "(%s)", ret, strerror(-ret));
3883                 nl80211_dump_scan(drv);
3884                 goto nla_put_failure;
3885         }
3886         ret = 0;
3887         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3888                    "successfully");
3889
3890 nla_put_failure:
3891         nlmsg_free(msg);
3892         return ret;
3893 }
3894
3895
3896 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3897                             int ifindex, int mode)
3898 {
3899         struct nl_msg *msg;
3900         int ret = -ENOBUFS;
3901
3902         msg = nlmsg_alloc();
3903         if (!msg)
3904                 return -ENOMEM;
3905
3906         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3907                     0, NL80211_CMD_SET_INTERFACE, 0);
3908         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3909         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3910
3911         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3912         if (!ret)
3913                 return 0;
3914 nla_put_failure:
3915         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3916                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
3917         return ret;
3918 }
3919
3920
3921 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3922 {
3923         struct i802_bss *bss = priv;
3924         struct wpa_driver_nl80211_data *drv = bss->drv;
3925         int ret = -1;
3926         int nlmode;
3927
3928         switch (mode) {
3929         case 0:
3930                 nlmode = NL80211_IFTYPE_STATION;
3931                 break;
3932         case 1:
3933                 nlmode = NL80211_IFTYPE_ADHOC;
3934                 break;
3935         case 2:
3936                 nlmode = NL80211_IFTYPE_AP;
3937                 break;
3938         default:
3939                 return -1;
3940         }
3941
3942         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3943                 drv->nlmode = nlmode;
3944                 ret = 0;
3945                 goto done;
3946         }
3947
3948         if (nlmode == drv->nlmode) {
3949                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3950                            "requested mode - ignore error");
3951                 ret = 0;
3952                 goto done; /* Already in the requested mode */
3953         }
3954
3955         /* mac80211 doesn't allow mode changes while the device is up, so
3956          * take the device down, try to set the mode again, and bring the
3957          * device back up.
3958          */
3959         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
3960                 /* Try to set the mode again while the interface is down */
3961                 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3962                 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
3963                         ret = -1;
3964         }
3965
3966         if (!ret) {
3967                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3968                            "interface is down");
3969                 drv->nlmode = nlmode;
3970         }
3971
3972 done:
3973         if (!ret && nlmode == NL80211_IFTYPE_AP) {
3974                 /* Setup additional AP mode functionality if needed */
3975                 if (drv->monitor_ifidx < 0 &&
3976                     nl80211_create_monitor_interface(drv))
3977                         return -1;
3978         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3979                 /* Remove additional AP mode functionality */
3980                 nl80211_remove_monitor_interface(drv);
3981                 bss->beacon_set = 0;
3982         }
3983
3984         if (ret)
3985                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3986                            "from %d failed", nlmode, drv->nlmode);
3987
3988         return ret;
3989 }
3990
3991
3992 static int wpa_driver_nl80211_get_capa(void *priv,
3993                                        struct wpa_driver_capa *capa)
3994 {
3995         struct i802_bss *bss = priv;
3996         struct wpa_driver_nl80211_data *drv = bss->drv;
3997         if (!drv->has_capability)
3998                 return -1;
3999         os_memcpy(capa, &drv->capa, sizeof(*capa));
4000         return 0;
4001 }
4002
4003
4004 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4005 {
4006         struct i802_bss *bss = priv;
4007         struct wpa_driver_nl80211_data *drv = bss->drv;
4008
4009         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4010                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4011         drv->operstate = state;
4012         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4013                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4014 }
4015
4016
4017 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4018 {
4019         struct i802_bss *bss = priv;
4020         struct wpa_driver_nl80211_data *drv = bss->drv;
4021         struct nl_msg *msg;
4022         struct nl80211_sta_flag_update upd;
4023
4024         msg = nlmsg_alloc();
4025         if (!msg)
4026                 return -ENOMEM;
4027
4028         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4029                     0, NL80211_CMD_SET_STATION, 0);
4030
4031         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4032                     if_nametoindex(bss->ifname));
4033         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4034
4035         os_memset(&upd, 0, sizeof(upd));
4036         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4037         if (authorized)
4038                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4039         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4040
4041         return send_and_recv_msgs(drv, msg, NULL, NULL);
4042  nla_put_failure:
4043         return -ENOBUFS;
4044 }
4045
4046
4047 #ifdef HOSTAPD
4048
4049 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4050 {
4051         int i;
4052         int *old;
4053
4054         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4055                    ifidx);
4056         for (i = 0; i < drv->num_if_indices; i++) {
4057                 if (drv->if_indices[i] == 0) {
4058                         drv->if_indices[i] = ifidx;
4059                         return;
4060                 }
4061         }
4062
4063         if (drv->if_indices != drv->default_if_indices)
4064                 old = drv->if_indices;
4065         else
4066                 old = NULL;
4067
4068         drv->if_indices = os_realloc(old,
4069                                      sizeof(int) * (drv->num_if_indices + 1));
4070         if (!drv->if_indices) {
4071                 if (!old)
4072                         drv->if_indices = drv->default_if_indices;
4073                 else
4074                         drv->if_indices = old;
4075                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4076                            "interfaces");
4077                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4078                 return;
4079         }
4080         drv->if_indices[drv->num_if_indices] = ifidx;
4081         drv->num_if_indices++;
4082 }
4083
4084
4085 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4086 {
4087         int i;
4088
4089         for (i = 0; i < drv->num_if_indices; i++) {
4090                 if (drv->if_indices[i] == ifidx) {
4091                         drv->if_indices[i] = 0;
4092                         break;
4093                 }
4094         }
4095 }
4096
4097
4098 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4099 {
4100         int i;
4101
4102         for (i = 0; i < drv->num_if_indices; i++)
4103                 if (drv->if_indices[i] == ifidx)
4104                         return 1;
4105
4106         return 0;
4107 }
4108
4109
4110 static inline int min_int(int a, int b)
4111 {
4112         if (a < b)
4113                 return a;
4114         return b;
4115 }
4116
4117
4118 static int get_key_handler(struct nl_msg *msg, void *arg)
4119 {
4120         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4121         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4122
4123         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4124                   genlmsg_attrlen(gnlh, 0), NULL);
4125
4126         /*
4127          * TODO: validate the key index and mac address!
4128          * Otherwise, there's a race condition as soon as
4129          * the kernel starts sending key notifications.
4130          */
4131
4132         if (tb[NL80211_ATTR_KEY_SEQ])
4133                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4134                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4135         return NL_SKIP;
4136 }
4137
4138
4139 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4140                            int idx, u8 *seq)
4141 {
4142         struct i802_bss *bss = priv;
4143         struct wpa_driver_nl80211_data *drv = bss->drv;
4144         struct nl_msg *msg;
4145
4146         msg = nlmsg_alloc();
4147         if (!msg)
4148                 return -ENOMEM;
4149
4150         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4151                     0, NL80211_CMD_GET_KEY, 0);
4152
4153         if (addr)
4154                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4155         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4156         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4157
4158         memset(seq, 0, 6);
4159
4160         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4161  nla_put_failure:
4162         return -ENOBUFS;
4163 }
4164
4165
4166 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4167                               int mode)
4168 {
4169         struct i802_bss *bss = priv;
4170         struct wpa_driver_nl80211_data *drv = bss->drv;
4171         struct nl_msg *msg;
4172         u8 rates[NL80211_MAX_SUPP_RATES];
4173         u8 rates_len = 0;
4174         int i;
4175
4176         msg = nlmsg_alloc();
4177         if (!msg)
4178                 return -ENOMEM;
4179
4180         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4181                     NL80211_CMD_SET_BSS, 0);
4182
4183         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4184                 rates[rates_len++] = basic_rates[i] / 5;
4185
4186         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4187
4188         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4189
4190         return send_and_recv_msgs(drv, msg, NULL, NULL);
4191  nla_put_failure:
4192         return -ENOBUFS;
4193 }
4194
4195
4196 /* Set kernel driver on given frequency (MHz) */
4197 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4198 {
4199         struct i802_bss *bss = priv;
4200         struct wpa_driver_nl80211_data *drv = bss->drv;
4201         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4202                                            freq->sec_channel_offset);
4203 }
4204
4205
4206 static int i802_set_rts(void *priv, int rts)
4207 {
4208         struct i802_bss *bss = priv;
4209         struct wpa_driver_nl80211_data *drv = bss->drv;
4210         struct nl_msg *msg;
4211         int ret = -ENOBUFS;
4212         u32 val;
4213
4214         msg = nlmsg_alloc();
4215         if (!msg)
4216                 return -ENOMEM;
4217
4218         if (rts >= 2347)
4219                 val = (u32) -1;
4220         else
4221                 val = rts;
4222
4223         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4224                     0, NL80211_CMD_SET_WIPHY, 0);
4225         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4226         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4227
4228         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4229         if (!ret)
4230                 return 0;
4231 nla_put_failure:
4232         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4233                    "%d (%s)", rts, ret, strerror(-ret));
4234         return ret;
4235 }
4236
4237
4238 static int i802_set_frag(void *priv, int frag)
4239 {
4240         struct i802_bss *bss = priv;
4241         struct wpa_driver_nl80211_data *drv = bss->drv;
4242         struct nl_msg *msg;
4243         int ret = -ENOBUFS;
4244         u32 val;
4245
4246         msg = nlmsg_alloc();
4247         if (!msg)
4248                 return -ENOMEM;
4249
4250         if (frag >= 2346)
4251                 val = (u32) -1;
4252         else
4253                 val = frag;
4254
4255         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4256                     0, NL80211_CMD_SET_WIPHY, 0);
4257         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4258         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4259
4260         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4261         if (!ret)
4262                 return 0;
4263 nla_put_failure:
4264         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4265                    "%d: %d (%s)", frag, ret, strerror(-ret));
4266         return ret;
4267 }
4268
4269
4270 static int i802_flush(void *priv)
4271 {
4272         struct i802_bss *bss = priv;
4273         struct wpa_driver_nl80211_data *drv = bss->drv;
4274         struct nl_msg *msg;
4275
4276         msg = nlmsg_alloc();
4277         if (!msg)
4278                 return -1;
4279
4280         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4281                     0, NL80211_CMD_DEL_STATION, 0);
4282
4283         /*
4284          * XXX: FIX! this needs to flush all VLANs too
4285          */
4286         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4287                     if_nametoindex(bss->ifname));
4288
4289         return send_and_recv_msgs(drv, msg, NULL, NULL);
4290  nla_put_failure:
4291         return -ENOBUFS;
4292 }
4293
4294
4295 static int get_sta_handler(struct nl_msg *msg, void *arg)
4296 {
4297         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4298         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4299         struct hostap_sta_driver_data *data = arg;
4300         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4301         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4302                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4303                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4304                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4305                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4306                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4307         };
4308
4309         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4310                   genlmsg_attrlen(gnlh, 0), NULL);
4311
4312         /*
4313          * TODO: validate the interface and mac address!
4314          * Otherwise, there's a race condition as soon as
4315          * the kernel starts sending station notifications.
4316          */
4317
4318         if (!tb[NL80211_ATTR_STA_INFO]) {
4319                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4320                 return NL_SKIP;
4321         }
4322         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4323                              tb[NL80211_ATTR_STA_INFO],
4324                              stats_policy)) {
4325                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4326                 return NL_SKIP;
4327         }
4328
4329         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4330                 data->inactive_msec =
4331                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4332         if (stats[NL80211_STA_INFO_RX_BYTES])
4333                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4334         if (stats[NL80211_STA_INFO_TX_BYTES])
4335                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4336         if (stats[NL80211_STA_INFO_RX_PACKETS])
4337                 data->rx_packets =
4338                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4339         if (stats[NL80211_STA_INFO_TX_PACKETS])
4340                 data->tx_packets =
4341                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4342
4343         return NL_SKIP;
4344 }
4345
4346 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4347                               const u8 *addr)
4348 {
4349         struct i802_bss *bss = priv;
4350         struct wpa_driver_nl80211_data *drv = bss->drv;
4351         struct nl_msg *msg;
4352
4353         os_memset(data, 0, sizeof(*data));
4354         msg = nlmsg_alloc();
4355         if (!msg)
4356                 return -ENOMEM;
4357
4358         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4359                     0, NL80211_CMD_GET_STATION, 0);
4360
4361         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4362         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4363
4364         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4365  nla_put_failure:
4366         return -ENOBUFS;
4367 }
4368
4369
4370 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4371                                     int cw_min, int cw_max, int burst_time)
4372 {
4373         struct i802_bss *bss = priv;
4374         struct wpa_driver_nl80211_data *drv = bss->drv;
4375         struct nl_msg *msg;
4376         struct nlattr *txq, *params;
4377
4378         msg = nlmsg_alloc();
4379         if (!msg)
4380                 return -1;
4381
4382         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4383                     0, NL80211_CMD_SET_WIPHY, 0);
4384
4385         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4386
4387         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4388         if (!txq)
4389                 goto nla_put_failure;
4390
4391         /* We are only sending parameters for a single TXQ at a time */
4392         params = nla_nest_start(msg, 1);
4393         if (!params)
4394                 goto nla_put_failure;
4395
4396         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4397         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4398          * 32 usec, so need to convert the value here. */
4399         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4400         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4401         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4402         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4403
4404         nla_nest_end(msg, params);
4405
4406         nla_nest_end(msg, txq);
4407
4408         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4409                 return 0;
4410  nla_put_failure:
4411         return -1;
4412 }
4413
4414
4415 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4416 {
4417         struct i802_bss *bss = priv;
4418         struct wpa_driver_nl80211_data *drv = bss->drv;
4419         struct nl_msg *msg;
4420
4421         msg = nlmsg_alloc();
4422         if (!msg)
4423                 return -ENOMEM;
4424
4425         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4426                     NL80211_CMD_SET_BSS, 0);
4427
4428         if (cts >= 0)
4429                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4430         if (preamble >= 0)
4431                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4432         if (slot >= 0)
4433                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4434
4435         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4436
4437         return send_and_recv_msgs(drv, msg, NULL, NULL);
4438  nla_put_failure:
4439         return -ENOBUFS;
4440 }
4441
4442
4443 static int i802_set_cts_protect(void *priv, int value)
4444 {
4445         return i802_set_bss(priv, value, -1, -1);
4446 }
4447
4448
4449 static int i802_set_preamble(void *priv, int value)
4450 {
4451         return i802_set_bss(priv, -1, value, -1);
4452 }
4453
4454
4455 static int i802_set_short_slot_time(void *priv, int value)
4456 {
4457         return i802_set_bss(priv, -1, -1, value);
4458 }
4459
4460
4461 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4462                              const char *ifname, int vlan_id)
4463 {
4464         struct i802_bss *bss = priv;
4465         struct wpa_driver_nl80211_data *drv = bss->drv;
4466         struct nl_msg *msg;
4467
4468         msg = nlmsg_alloc();
4469         if (!msg)
4470                 return -ENOMEM;
4471
4472         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4473                     0, NL80211_CMD_SET_STATION, 0);
4474
4475         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4476                     if_nametoindex(bss->ifname));
4477         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4478         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4479                     if_nametoindex(ifname));
4480
4481         return send_and_recv_msgs(drv, msg, NULL, NULL);
4482  nla_put_failure:
4483         return -ENOBUFS;
4484 }
4485
4486
4487 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4488 {
4489         struct i802_bss *bss = priv;
4490         struct wpa_driver_nl80211_data *drv = bss->drv;
4491         char name[IFNAMSIZ + 1];
4492
4493         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4494         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4495                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4496         if (val) {
4497                 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4498                                          NULL, 1) < 0)
4499                         return -1;
4500                 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4501                 return i802_set_sta_vlan(priv, addr, name, 0);
4502         } else {
4503                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4504                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4505                                                     name);
4506         }
4507 }
4508
4509
4510 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4511 {
4512         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4513         struct sockaddr_ll lladdr;
4514         unsigned char buf[3000];
4515         int len;
4516         socklen_t fromlen = sizeof(lladdr);
4517
4518         len = recvfrom(sock, buf, sizeof(buf), 0,
4519                        (struct sockaddr *)&lladdr, &fromlen);
4520         if (len < 0) {
4521                 perror("recv");
4522                 return;
4523         }
4524
4525         if (have_ifidx(drv, lladdr.sll_ifindex))
4526                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4527 }
4528
4529
4530 static int i802_get_inact_sec(void *priv, const u8 *addr)
4531 {
4532         struct hostap_sta_driver_data data;
4533         int ret;
4534
4535         data.inactive_msec = (unsigned long) -1;
4536         ret = i802_read_sta_data(priv, &data, addr);
4537         if (ret || data.inactive_msec == (unsigned long) -1)
4538                 return -1;
4539         return data.inactive_msec / 1000;
4540 }
4541
4542
4543 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4544 {
4545 #if 0
4546         /* TODO */
4547 #endif
4548         return 0;
4549 }
4550
4551
4552 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4553                            int reason)
4554 {
4555         struct i802_bss *bss = priv;
4556         struct ieee80211_mgmt mgmt;
4557
4558         memset(&mgmt, 0, sizeof(mgmt));
4559         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4560                                           WLAN_FC_STYPE_DEAUTH);
4561         memcpy(mgmt.da, addr, ETH_ALEN);
4562         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4563         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4564         mgmt.u.deauth.reason_code = host_to_le16(reason);
4565         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4566                                             IEEE80211_HDRLEN +
4567                                             sizeof(mgmt.u.deauth));
4568 }
4569
4570
4571 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4572                              int reason)
4573 {
4574         struct i802_bss *bss = priv;
4575         struct ieee80211_mgmt mgmt;
4576
4577         memset(&mgmt, 0, sizeof(mgmt));
4578         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4579                                           WLAN_FC_STYPE_DISASSOC);
4580         memcpy(mgmt.da, addr, ETH_ALEN);
4581         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4582         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4583         mgmt.u.disassoc.reason_code = host_to_le16(reason);
4584         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4585                                             IEEE80211_HDRLEN +
4586                                             sizeof(mgmt.u.disassoc));
4587 }
4588
4589
4590 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4591                              const char *brname, const char *ifname)
4592 {
4593         int ifindex;
4594         char in_br[IFNAMSIZ];
4595
4596         os_strlcpy(drv->brname, brname, IFNAMSIZ);
4597         ifindex = if_nametoindex(brname);
4598         if (ifindex == 0) {
4599                 /*
4600                  * Bridge was configured, but the bridge device does
4601                  * not exist. Try to add it now.
4602                  */
4603                 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4604                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4605                                    "bridge interface %s: %s",
4606                                    brname, strerror(errno));
4607                         return -1;
4608                 }
4609                 drv->added_bridge = 1;
4610                 add_ifidx(drv, if_nametoindex(brname));
4611         }
4612
4613         if (linux_br_get(in_br, ifname) == 0) {
4614                 if (os_strcmp(in_br, brname) == 0)
4615                         return 0; /* already in the bridge */
4616
4617                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4618                            "bridge %s", ifname, in_br);
4619                 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4620                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
4621                                    "remove interface %s from bridge "
4622                                    "%s: %s",
4623                                    ifname, brname, strerror(errno));
4624                         return -1;
4625                 }
4626         }
4627
4628         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4629                    ifname, brname);
4630         if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4631                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4632                            "into bridge %s: %s",
4633                            ifname, brname, strerror(errno));
4634                 return -1;
4635         }
4636         drv->added_if_into_bridge = 1;
4637
4638         return 0;
4639 }
4640
4641
4642 static void *i802_init(struct hostapd_data *hapd,
4643                        struct wpa_init_params *params)
4644 {
4645         struct wpa_driver_nl80211_data *drv;
4646         struct i802_bss *bss;
4647         size_t i;
4648         char brname[IFNAMSIZ];
4649         int ifindex, br_ifindex;
4650         int br_added = 0;
4651
4652         bss = wpa_driver_nl80211_init(hapd, params->ifname);
4653         if (bss == NULL)
4654                 return NULL;
4655
4656         drv = bss->drv;
4657         if (linux_br_get(brname, params->ifname) == 0) {
4658                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4659                            params->ifname, brname);
4660                 br_ifindex = if_nametoindex(brname);
4661         } else {
4662                 brname[0] = '\0';
4663                 br_ifindex = 0;
4664         }
4665
4666         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4667         drv->if_indices = drv->default_if_indices;
4668         for (i = 0; i < params->num_bridge; i++) {
4669                 if (params->bridge[i]) {
4670                         ifindex = if_nametoindex(params->bridge[i]);
4671                         if (ifindex)
4672                                 add_ifidx(drv, ifindex);
4673                         if (ifindex == br_ifindex)
4674                                 br_added = 1;
4675                 }
4676         }
4677         if (!br_added && br_ifindex &&
4678             (params->num_bridge == 0 || !params->bridge[0]))
4679                 add_ifidx(drv, br_ifindex);
4680
4681         /* start listening for EAPOL on the default AP interface */
4682         add_ifidx(drv, drv->ifindex);
4683
4684         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
4685                 goto failed;
4686
4687         if (params->bssid) {
4688                 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
4689                                        params->bssid))
4690                         goto failed;
4691         }
4692
4693         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
4694                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4695                            "into AP mode", bss->ifname);
4696                 goto failed;
4697         }
4698
4699         if (params->num_bridge && params->bridge[0] &&
4700             i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4701                 goto failed;
4702
4703         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4704                 goto failed;
4705
4706         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4707         if (drv->eapol_sock < 0) {
4708                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4709                 goto failed;
4710         }
4711
4712         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4713         {
4714                 printf("Could not register read socket for eapol\n");
4715                 goto failed;
4716         }
4717
4718         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
4719                 goto failed;
4720
4721         return bss;
4722
4723 failed:
4724         nl80211_remove_monitor_interface(drv);
4725         if (drv->ioctl_sock >= 0)
4726                 close(drv->ioctl_sock);
4727
4728         genl_family_put(drv->nl80211);
4729         nl_cache_free(drv->nl_cache);
4730         nl_handle_destroy(drv->nl_handle);
4731         nl_cb_put(drv->nl_cb);
4732
4733         os_free(drv);
4734         return NULL;
4735 }
4736
4737
4738 static void i802_deinit(void *priv)
4739 {
4740         wpa_driver_nl80211_deinit(priv);
4741 }
4742
4743 #endif /* HOSTAPD */
4744
4745
4746 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4747         enum wpa_driver_if_type type)
4748 {
4749         switch (type) {
4750         case WPA_IF_STATION:
4751                 return NL80211_IFTYPE_STATION;
4752         case WPA_IF_AP_VLAN:
4753                 return NL80211_IFTYPE_AP_VLAN;
4754         case WPA_IF_AP_BSS:
4755                 return NL80211_IFTYPE_AP;
4756         }
4757         return -1;
4758 }
4759
4760
4761 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
4762                                      const char *ifname, const u8 *addr,
4763                                      void *bss_ctx, void **drv_priv)
4764 {
4765         struct i802_bss *bss = priv;
4766         struct wpa_driver_nl80211_data *drv = bss->drv;
4767         int ifidx;
4768 #ifdef HOSTAPD
4769         struct i802_bss *new_bss = NULL;
4770
4771         if (type == WPA_IF_AP_BSS) {
4772                 new_bss = os_zalloc(sizeof(*new_bss));
4773                 if (new_bss == NULL)
4774                         return -1;
4775         }
4776 #endif /* HOSTAPD */
4777
4778         ifidx = nl80211_create_iface(drv, ifname,
4779                                      wpa_driver_nl80211_if_type(type), addr,
4780                                      0);
4781         if (ifidx < 0) {
4782 #ifdef HOSTAPD
4783                 os_free(new_bss);
4784 #endif /* HOSTAPD */
4785                 return -1;
4786         }
4787
4788 #ifdef HOSTAPD
4789         if (type == WPA_IF_AP_BSS) {
4790                 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4791                         nl80211_remove_iface(drv, ifidx);
4792                         os_free(new_bss);
4793                         return -1;
4794                 }
4795                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4796                 new_bss->ifindex = ifidx;
4797                 new_bss->drv = drv;
4798                 new_bss->next = drv->first_bss.next;
4799                 drv->first_bss.next = new_bss;
4800                 if (drv_priv)
4801                         *drv_priv = new_bss;
4802         }
4803 #endif /* HOSTAPD */
4804
4805         return 0;
4806 }
4807
4808
4809 static int wpa_driver_nl80211_if_remove(void *priv,
4810                                         enum wpa_driver_if_type type,
4811                                         const char *ifname)
4812 {
4813         struct i802_bss *bss = priv;
4814         struct wpa_driver_nl80211_data *drv = bss->drv;
4815         int ifindex = if_nametoindex(ifname);
4816
4817         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4818                    __func__, type, ifname, ifindex);
4819         if (ifindex <= 0)
4820                 return -1;
4821         nl80211_remove_iface(drv, ifindex);
4822
4823 #ifdef HOSTAPD
4824         if (type != WPA_IF_AP_BSS)
4825                 return 0;
4826
4827         if (bss != &drv->first_bss) {
4828                 struct i802_bss *tbss = &drv->first_bss;
4829
4830                 while (tbss) {
4831                         if (tbss->next != bss)
4832                                 continue;
4833
4834                         tbss->next = bss->next;
4835                         os_free(bss);
4836                         break;
4837                 }
4838         }
4839 #endif /* HOSTAPD */
4840
4841         return 0;
4842 }
4843
4844
4845 static int cookie_handler(struct nl_msg *msg, void *arg)
4846 {
4847         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4848         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4849         u64 *cookie = arg;
4850         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4851                   genlmsg_attrlen(gnlh, 0), NULL);
4852         if (tb[NL80211_ATTR_COOKIE])
4853                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4854         return NL_SKIP;
4855 }
4856
4857
4858 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
4859                                           const u8 *dst, const u8 *src,
4860                                           const u8 *bssid,
4861                                           const u8 *data, size_t data_len)
4862 {
4863         struct i802_bss *bss = priv;
4864         struct wpa_driver_nl80211_data *drv = bss->drv;
4865         int ret = -1;
4866         struct nl_msg *msg;
4867         u8 *buf;
4868         struct ieee80211_hdr *hdr;
4869         u64 cookie;
4870
4871         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
4872                    drv->ifindex);
4873
4874         buf = os_zalloc(24 + data_len);
4875         if (buf == NULL)
4876                 return ret;
4877         os_memcpy(buf + 24, data, data_len);
4878         hdr = (struct ieee80211_hdr *) buf;
4879         hdr->frame_control =
4880                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
4881         os_memcpy(hdr->addr1, dst, ETH_ALEN);
4882         os_memcpy(hdr->addr2, src, ETH_ALEN);
4883         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
4884
4885         if (drv->nlmode == NL80211_IFTYPE_AP) {
4886                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
4887                 os_free(buf);
4888                 return ret;
4889         }
4890
4891         msg = nlmsg_alloc();
4892         if (!msg) {
4893                 os_free(buf);
4894                 return -1;
4895         }
4896
4897         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4898                     NL80211_CMD_ACTION, 0);
4899
4900         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4901         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4902         NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
4903         os_free(buf);
4904         buf = NULL;
4905
4906         cookie = 0;
4907         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4908         msg = NULL;
4909         if (ret) {
4910                 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
4911                            "(%s)", ret, strerror(-ret));
4912                 goto nla_put_failure;
4913         }
4914         wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
4915                    "cookie 0x%llx", (long long unsigned int) cookie);
4916         drv->send_action_cookie = cookie;
4917         drv->pending_send_action = 1;
4918         ret = 0;
4919
4920 nla_put_failure:
4921         os_free(buf);
4922         nlmsg_free(msg);
4923         return ret;
4924 }
4925
4926
4927 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4928                                                 unsigned int duration)
4929 {
4930         struct i802_bss *bss = priv;
4931         struct wpa_driver_nl80211_data *drv = bss->drv;
4932         struct nl_msg *msg;
4933         int ret;
4934         u64 cookie;
4935
4936         msg = nlmsg_alloc();
4937         if (!msg)
4938                 return -1;
4939
4940         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4941                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4942
4943         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4944         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4945         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4946
4947         cookie = 0;
4948         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4949         if (ret == 0) {
4950                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4951                            "0x%llx for freq=%u MHz duration=%u",
4952                            (long long unsigned int) cookie, freq, duration);
4953                 drv->remain_on_chan_cookie = cookie;
4954                 return 0;
4955         }
4956         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4957                    "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4958 nla_put_failure:
4959         return -1;
4960 }
4961
4962
4963 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4964 {
4965         struct i802_bss *bss = priv;
4966         struct wpa_driver_nl80211_data *drv = bss->drv;
4967         struct nl_msg *msg;
4968         int ret;
4969
4970         if (!drv->pending_remain_on_chan) {
4971                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4972                            "to cancel");
4973                 return -1;
4974         }
4975
4976         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4977                    "0x%llx",
4978                    (long long unsigned int) drv->remain_on_chan_cookie);
4979
4980         msg = nlmsg_alloc();
4981         if (!msg)
4982                 return -1;
4983
4984         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4985                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4986
4987         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4988         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4989
4990         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4991         if (ret == 0)
4992                 return 0;
4993         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4994                    "%d (%s)", ret, strerror(-ret));
4995 nla_put_failure:
4996         return -1;
4997 }
4998
4999
5000 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5001                                                         void *timeout_ctx)
5002 {
5003         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5004         if (drv->monitor_ifidx < 0)
5005                 return; /* monitor interface already removed */
5006
5007         if (drv->nlmode != NL80211_IFTYPE_STATION)
5008                 return; /* not in station mode anymore */
5009
5010         if (drv->probe_req_report)
5011                 return; /* reporting enabled */
5012
5013         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5014                    "Probe Request reporting needed anymore");
5015         nl80211_remove_monitor_interface(drv);
5016 }
5017
5018
5019 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5020 {
5021         struct i802_bss *bss = priv;
5022         struct wpa_driver_nl80211_data *drv = bss->drv;
5023
5024         if (drv->nlmode != NL80211_IFTYPE_STATION) {
5025                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5026                            "allowed in station mode (iftype=%d)",
5027                            drv->nlmode);
5028                 return -1;
5029         }
5030         drv->probe_req_report = report;
5031
5032         if (report) {
5033                 eloop_cancel_timeout(
5034                         wpa_driver_nl80211_probe_req_report_timeout,
5035                         drv, NULL);
5036                 if (drv->monitor_ifidx < 0 &&
5037                     nl80211_create_monitor_interface(drv))
5038                         return -1;
5039         } else {
5040                 /*
5041                  * It takes a while to remove the monitor interface, so try to
5042                  * avoid doing this if it is needed again shortly. Instead,
5043                  * schedule the interface to be removed later if no need for it
5044                  * is seen.
5045                  */
5046                 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5047                            "to be removed after 10 seconds of no use");
5048                 eloop_register_timeout(
5049                         10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5050                         drv, NULL);
5051         }
5052
5053         return 0;
5054 }
5055
5056
5057 static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr,
5058                                                    char *ifname)
5059 {
5060         struct i802_bss *bss = priv;
5061         struct wpa_driver_nl80211_data *drv = bss->drv;
5062
5063         if (ifname)
5064                 ifname[0] = '\0';
5065
5066         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, addr) < 0)
5067                 return -1;
5068
5069         if (addr[0] & 0x02) {
5070                 /* TODO: add support for generating multiple addresses */
5071                 addr[0] ^= 0x80;
5072         } else
5073                 addr[0] = 0x02; /* locally administered */
5074
5075         return 0;
5076 }
5077
5078
5079 static void wpa_driver_nl80211_release_interface_addr(void *priv,
5080                                                       const u8 *addr)
5081 {
5082         /* TODO: keep list of allocated address and release them here */
5083 }
5084
5085
5086 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5087                                      int ifindex, int disabled)
5088 {
5089         struct nl_msg *msg;
5090         struct nlattr *bands, *band;
5091         int ret;
5092
5093         msg = nlmsg_alloc();
5094         if (!msg)
5095                 return -1;
5096
5097         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5098                     NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5099         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5100
5101         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5102         if (!bands)
5103                 goto nla_put_failure;
5104
5105         /*
5106          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5107          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5108          * rates. All 5 GHz rates are left enabled.
5109          */
5110         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5111         if (!band)
5112                 goto nla_put_failure;
5113         NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5114                 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5115         nla_nest_end(msg, band);
5116
5117         nla_nest_end(msg, bands);
5118
5119         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5120         msg = NULL;
5121         if (ret) {
5122                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5123                            "(%s)", ret, strerror(-ret));
5124         }
5125
5126         return ret;
5127
5128 nla_put_failure:
5129         nlmsg_free(msg);
5130         return -1;
5131 }
5132
5133
5134 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5135 {
5136         struct i802_bss *bss = priv;
5137         struct wpa_driver_nl80211_data *drv = bss->drv;
5138         drv->disable_11b_rates = disabled;
5139         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5140 }
5141
5142
5143 static int wpa_driver_nl80211_deinit_ap(void *priv)
5144 {
5145         struct i802_bss *bss = priv;
5146         struct wpa_driver_nl80211_data *drv = bss->drv;
5147         if (drv->nlmode != NL80211_IFTYPE_AP)
5148                 return -1;
5149         wpa_driver_nl80211_del_beacon(drv);
5150         return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5151 }
5152
5153
5154 static void wpa_driver_nl80211_resume(void *priv)
5155 {
5156         struct i802_bss *bss = priv;
5157         struct wpa_driver_nl80211_data *drv = bss->drv;
5158         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5159                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5160                            "resume event");
5161         }
5162 }
5163
5164
5165 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5166                                   const u8 *ies, size_t ies_len)
5167 {
5168         struct i802_bss *bss = priv;
5169         struct wpa_driver_nl80211_data *drv = bss->drv;
5170         int ret;
5171         u8 *data, *pos;
5172         size_t data_len;
5173         u8 own_addr[ETH_ALEN];
5174
5175         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5176                 return -1;
5177
5178         if (action != 1) {
5179                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5180                            "action %d", action);
5181                 return -1;
5182         }
5183
5184         /*
5185          * Action frame payload:
5186          * Category[1] = 6 (Fast BSS Transition)
5187          * Action[1] = 1 (Fast BSS Transition Request)
5188          * STA Address
5189          * Target AP Address
5190          * FT IEs
5191          */
5192
5193         data_len = 2 + 2 * ETH_ALEN + ies_len;
5194         data = os_malloc(data_len);
5195         if (data == NULL)
5196                 return -1;
5197         pos = data;
5198         *pos++ = 0x06; /* FT Action category */
5199         *pos++ = action;
5200         os_memcpy(pos, own_addr, ETH_ALEN);
5201         pos += ETH_ALEN;
5202         os_memcpy(pos, target_ap, ETH_ALEN);
5203         pos += ETH_ALEN;
5204         os_memcpy(pos, ies, ies_len);
5205
5206         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5207                                              own_addr, drv->bssid,
5208                                              data, data_len);
5209         os_free(data);
5210
5211         return ret;
5212 }
5213
5214
5215 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5216 {
5217         struct i802_bss *bss = priv;
5218         struct wpa_driver_nl80211_data *drv = bss->drv;
5219         struct nl_msg *msg, *cqm = NULL;
5220
5221         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5222                    "hysteresis=%d", threshold, hysteresis);
5223
5224         msg = nlmsg_alloc();
5225         if (!msg)
5226                 return -1;
5227
5228         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5229                     0, NL80211_CMD_SET_CQM, 0);
5230
5231         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5232
5233         cqm = nlmsg_alloc();
5234         if (cqm == NULL)
5235                 return -1;
5236
5237         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5238         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5239         nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5240
5241         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5242                 return 0;
5243         msg = NULL;
5244
5245 nla_put_failure:
5246         if (cqm)
5247                 nlmsg_free(cqm);
5248         nlmsg_free(msg);
5249         return -1;
5250 }
5251
5252
5253 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5254                               int encrypt)
5255 {
5256         struct i802_bss *bss = priv;
5257         struct wpa_driver_nl80211_data *drv = bss->drv;
5258         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5259 }
5260
5261
5262 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5263         .name = "nl80211",
5264         .desc = "Linux nl80211/cfg80211",
5265         .get_bssid = wpa_driver_nl80211_get_bssid,
5266         .get_ssid = wpa_driver_nl80211_get_ssid,
5267         .set_key = wpa_driver_nl80211_set_key,
5268         .scan2 = wpa_driver_nl80211_scan,
5269         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5270         .deauthenticate = wpa_driver_nl80211_deauthenticate,
5271         .disassociate = wpa_driver_nl80211_disassociate,
5272         .authenticate = wpa_driver_nl80211_authenticate,
5273         .associate = wpa_driver_nl80211_associate,
5274         .init = wpa_driver_nl80211_init,
5275         .deinit = wpa_driver_nl80211_deinit,
5276         .get_capa = wpa_driver_nl80211_get_capa,
5277         .set_operstate = wpa_driver_nl80211_set_operstate,
5278         .set_supp_port = wpa_driver_nl80211_set_supp_port,
5279         .set_country = wpa_driver_nl80211_set_country,
5280         .set_beacon = wpa_driver_nl80211_set_beacon,
5281         .if_add = wpa_driver_nl80211_if_add,
5282         .if_remove = wpa_driver_nl80211_if_remove,
5283         .send_mlme = wpa_driver_nl80211_send_mlme,
5284         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5285         .sta_add = wpa_driver_nl80211_sta_add,
5286         .sta_remove = wpa_driver_nl80211_sta_remove,
5287         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5288         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5289 #ifdef HOSTAPD
5290         .hapd_init = i802_init,
5291         .hapd_deinit = i802_deinit,
5292         .get_seqnum = i802_get_seqnum,
5293         .flush = i802_flush,
5294         .read_sta_data = i802_read_sta_data,
5295         .sta_deauth = i802_sta_deauth,
5296         .sta_disassoc = i802_sta_disassoc,
5297         .get_inact_sec = i802_get_inact_sec,
5298         .sta_clear_stats = i802_sta_clear_stats,
5299         .set_freq = i802_set_freq,
5300         .set_rts = i802_set_rts,
5301         .set_frag = i802_set_frag,
5302         .set_rate_sets = i802_set_rate_sets,
5303         .set_cts_protect = i802_set_cts_protect,
5304         .set_preamble = i802_set_preamble,
5305         .set_short_slot_time = i802_set_short_slot_time,
5306         .set_tx_queue_params = i802_set_tx_queue_params,
5307         .set_sta_vlan = i802_set_sta_vlan,
5308         .set_wds_sta = i802_set_wds_sta,
5309 #endif /* HOSTAPD */
5310         .send_action = wpa_driver_nl80211_send_action,
5311         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5312         .cancel_remain_on_channel =
5313         wpa_driver_nl80211_cancel_remain_on_channel,
5314         .probe_req_report = wpa_driver_nl80211_probe_req_report,
5315         .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
5316         .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
5317         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5318         .deinit_ap = wpa_driver_nl80211_deinit_ap,
5319         .resume = wpa_driver_nl80211_resume,
5320         .send_ft_action = nl80211_send_ft_action,
5321         .signal_monitor = nl80211_signal_monitor,
5322         .send_frame = nl80211_send_frame,
5323 };