www.project-moonshot.org Git - mech_eap.orig/blob - src/drivers/driver_nl80211.c

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