src/drivers/driver_nl80211.c

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