src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2012, 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 software may be distributed under the terms of the BSD license.
  10  * See README for more details.
  11  */
  12
  13 #include "includes.h"
  14 #include <sys/ioctl.h>
  15 #include <sys/types.h>
  16 #include <sys/stat.h>
  17 #include <fcntl.h>
  18 #include <net/if.h>
  19 #include <netlink/genl/genl.h>
  20 #include <netlink/genl/family.h>
  21 #include <netlink/genl/ctrl.h>
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/filter.h>
  25 #include <linux/errqueue.h>
  26 #include "nl80211_copy.h"
  27
  28 #include "common.h"
  29 #include "eloop.h"
  30 #include "utils/list.h"
  31 #include "common/ieee802_11_defs.h"
  32 #include "common/ieee802_11_common.h"
  33 #include "l2_packet/l2_packet.h"
  34 #include "netlink.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver.h"
  40
  41 #ifndef SO_WIFI_STATUS
  42 # if defined(__sparc__)
  43 #  define SO_WIFI_STATUS        0x0025
  44 # elif defined(__parisc__)
  45 #  define SO_WIFI_STATUS        0x4022
  46 # else
  47 #  define SO_WIFI_STATUS        41
  48 # endif
  49
  50 # define SCM_WIFI_STATUS        SO_WIFI_STATUS
  51 #endif
  52
  53 #ifndef SO_EE_ORIGIN_TXSTATUS
  54 #define SO_EE_ORIGIN_TXSTATUS   4
  55 #endif
  56
  57 #ifndef PACKET_TX_TIMESTAMP
  58 #define PACKET_TX_TIMESTAMP     16
  59 #endif
  60
  61 #ifdef ANDROID
  62 #include "android_drv.h"
  63 #endif /* ANDROID */
  64 #ifdef CONFIG_LIBNL20
  65 /* libnl 2.0 compatibility code */
  66 #define nl_handle nl_sock
  67 #define nl80211_handle_alloc nl_socket_alloc_cb
  68 #define nl80211_handle_destroy nl_socket_free
  69 #else
  70 /*
  71  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  72  * but when you free a socket again it will mess up its bitmap and
  73  * and use the wrong number the next time it needs a socket ID.
  74  * Therefore, we wrap the handle alloc/destroy and add our own pid
  75  * accounting.
  76  */
  77 static uint32_t port_bitmap[32] = { 0 };
  78
  79 static struct nl_handle *nl80211_handle_alloc(void *cb)
  80 {
  81         struct nl_handle *handle;
  82         uint32_t pid = getpid() & 0x3FFFFF;
  83         int i;
  84
  85         handle = nl_handle_alloc_cb(cb);
  86
  87         for (i = 0; i < 1024; i++) {
  88                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  89                         continue;
  90                 port_bitmap[i / 32] |= 1 << (i % 32);
  91                 pid += i << 22;
  92                 break;
  93         }
  94
  95         nl_socket_set_local_port(handle, pid);
  96
  97         return handle;
  98 }
  99
 100 static void nl80211_handle_destroy(struct nl_handle *handle)
 101 {
 102         uint32_t port = nl_socket_get_local_port(handle);
 103
 104         port >>= 22;
 105         port_bitmap[port / 32] &= ~(1 << (port % 32));
 106
 107         nl_handle_destroy(handle);
 108 }
 109 #endif /* CONFIG_LIBNL20 */
 110
 111
 112 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
 113 {
 114         struct nl_handle *handle;
 115
 116         handle = nl80211_handle_alloc(cb);
 117         if (handle == NULL) {
 118                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 119                            "callbacks (%s)", dbg);
 120                 return NULL;
 121         }
 122
 123         if (genl_connect(handle)) {
 124                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 125                            "netlink (%s)", dbg);
 126                 nl80211_handle_destroy(handle);
 127                 return NULL;
 128         }
 129
 130         return handle;
 131 }
 132
 133
 134 static void nl_destroy_handles(struct nl_handle **handle)
 135 {
 136         if (*handle == NULL)
 137                 return;
 138         nl80211_handle_destroy(*handle);
 139         *handle = NULL;
 140 }
 141
 142
 143 #ifndef IFF_LOWER_UP
 144 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
 145 #endif
 146 #ifndef IFF_DORMANT
 147 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
 148 #endif
 149
 150 #ifndef IF_OPER_DORMANT
 151 #define IF_OPER_DORMANT 5
 152 #endif
 153 #ifndef IF_OPER_UP
 154 #define IF_OPER_UP 6
 155 #endif
 156
 157 struct nl80211_global {
 158         struct dl_list interfaces;
 159         int if_add_ifindex;
 160         struct netlink_data *netlink;
 161         struct nl_cb *nl_cb;
 162         struct nl_handle *nl;
 163         int nl80211_id;
 164         int ioctl_sock; /* socket for ioctl() use */
 165
 166         struct nl_handle *nl_event;
 167 };
 168
 169 struct nl80211_wiphy_data {
 170         struct dl_list list;
 171         struct dl_list bsss;
 172         struct dl_list drvs;
 173
 174         struct nl_handle *nl_beacons;
 175         struct nl_cb *nl_cb;
 176
 177         int wiphy_idx;
 178 };
 179
 180 static void nl80211_global_deinit(void *priv);
 181
 182 struct i802_bss {
 183         struct wpa_driver_nl80211_data *drv;
 184         struct i802_bss *next;
 185         int ifindex;
 186         char ifname[IFNAMSIZ + 1];
 187         char brname[IFNAMSIZ];
 188         unsigned int beacon_set:1;
 189         unsigned int added_if_into_bridge:1;
 190         unsigned int added_bridge:1;
 191         unsigned int in_deinit:1;
 192
 193         u8 addr[ETH_ALEN];
 194
 195         int freq;
 196
 197         void *ctx;
 198         struct nl_handle *nl_preq, *nl_mgmt;
 199         struct nl_cb *nl_cb;
 200
 201         struct nl80211_wiphy_data *wiphy_data;
 202         struct dl_list wiphy_list;
 203 };
 204
 205 struct wpa_driver_nl80211_data {
 206         struct nl80211_global *global;
 207         struct dl_list list;
 208         struct dl_list wiphy_list;
 209         char phyname[32];
 210         void *ctx;
 211         int ifindex;
 212         int if_removed;
 213         int if_disabled;
 214         int ignore_if_down_event;
 215         struct rfkill_data *rfkill;
 216         struct wpa_driver_capa capa;
 217         u8 *extended_capa, *extended_capa_mask;
 218         unsigned int extended_capa_len;
 219         int has_capability;
 220
 221         int operstate;
 222
 223         int scan_complete_events;
 224
 225         struct nl_cb *nl_cb;
 226
 227         u8 auth_bssid[ETH_ALEN];
 228         u8 auth_attempt_bssid[ETH_ALEN];
 229         u8 bssid[ETH_ALEN];
 230         u8 prev_bssid[ETH_ALEN];
 231         int associated;
 232         u8 ssid[32];
 233         size_t ssid_len;
 234         enum nl80211_iftype nlmode;
 235         enum nl80211_iftype ap_scan_as_station;
 236         unsigned int assoc_freq;
 237
 238         int monitor_sock;
 239         int monitor_ifidx;
 240         int monitor_refcount;
 241
 242         unsigned int disabled_11b_rates:1;
 243         unsigned int pending_remain_on_chan:1;
 244         unsigned int in_interface_list:1;
 245         unsigned int device_ap_sme:1;
 246         unsigned int poll_command_supported:1;
 247         unsigned int data_tx_status:1;
 248         unsigned int scan_for_auth:1;
 249         unsigned int retry_auth:1;
 250         unsigned int use_monitor:1;
 251         unsigned int ignore_next_local_disconnect:1;
 252
 253         u64 remain_on_chan_cookie;
 254         u64 send_action_cookie;
 255
 256         unsigned int last_mgmt_freq;
 257
 258         struct wpa_driver_scan_filter *filter_ssids;
 259         size_t num_filter_ssids;
 260
 261         struct i802_bss first_bss;
 262
 263         int eapol_tx_sock;
 264
 265 #ifdef HOSTAPD
 266         int eapol_sock; /* socket for EAPOL frames */
 267
 268         int default_if_indices[16];
 269         int *if_indices;
 270         int num_if_indices;
 271
 272         int last_freq;
 273         int last_freq_ht;
 274 #endif /* HOSTAPD */
 275
 276         /* From failed authentication command */
 277         int auth_freq;
 278         u8 auth_bssid_[ETH_ALEN];
 279         u8 auth_ssid[32];
 280         size_t auth_ssid_len;
 281         int auth_alg;
 282         u8 *auth_ie;
 283         size_t auth_ie_len;
 284         u8 auth_wep_key[4][16];
 285         size_t auth_wep_key_len[4];
 286         int auth_wep_tx_keyidx;
 287         int auth_local_state_change;
 288         int auth_p2p;
 289 };
 290
 291
 292 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 293 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 294                                             void *timeout_ctx);
 295 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
 296                                        enum nl80211_iftype nlmode);
 297 static int
 298 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 299 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 300                                    const u8 *addr, int cmd, u16 reason_code,
 301                                    int local_state_change);
 302 static void nl80211_remove_monitor_interface(
 303         struct wpa_driver_nl80211_data *drv);
 304 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 305                                   unsigned int freq, unsigned int wait,
 306                                   const u8 *buf, size_t buf_len, u64 *cookie,
 307                                   int no_cck, int no_ack, int offchanok);
 308 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 309                                                int report);
 310 #ifdef ANDROID
 311 static int android_pno_start(struct i802_bss *bss,
 312                              struct wpa_driver_scan_params *params);
 313 static int android_pno_stop(struct i802_bss *bss);
 314 #endif /* ANDROID */
 315
 316 #ifdef HOSTAPD
 317 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 318 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 319 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 320 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
 321                                         enum wpa_driver_if_type type,
 322                                         const char *ifname);
 323 #else /* HOSTAPD */
 324 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 325 {
 326 }
 327
 328 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 329 {
 330 }
 331
 332 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 333 {
 334         return 0;
 335 }
 336 #endif /* HOSTAPD */
 337
 338 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
 339                                        struct hostapd_freq_params *freq);
 340 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 341                                      int ifindex, int disabled);
 342
 343 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
 344 static int wpa_driver_nl80211_authenticate_retry(
 345         struct wpa_driver_nl80211_data *drv);
 346
 347
 348 static const char * nl80211_command_to_string(enum nl80211_commands cmd)
 349 {
 350 #define C2S(x) case x: return #x;
 351         switch (cmd) {
 352         C2S(NL80211_CMD_UNSPEC)
 353         C2S(NL80211_CMD_GET_WIPHY)
 354         C2S(NL80211_CMD_SET_WIPHY)
 355         C2S(NL80211_CMD_NEW_WIPHY)
 356         C2S(NL80211_CMD_DEL_WIPHY)
 357         C2S(NL80211_CMD_GET_INTERFACE)
 358         C2S(NL80211_CMD_SET_INTERFACE)
 359         C2S(NL80211_CMD_NEW_INTERFACE)
 360         C2S(NL80211_CMD_DEL_INTERFACE)
 361         C2S(NL80211_CMD_GET_KEY)
 362         C2S(NL80211_CMD_SET_KEY)
 363         C2S(NL80211_CMD_NEW_KEY)
 364         C2S(NL80211_CMD_DEL_KEY)
 365         C2S(NL80211_CMD_GET_BEACON)
 366         C2S(NL80211_CMD_SET_BEACON)
 367         C2S(NL80211_CMD_START_AP)
 368         C2S(NL80211_CMD_STOP_AP)
 369         C2S(NL80211_CMD_GET_STATION)
 370         C2S(NL80211_CMD_SET_STATION)
 371         C2S(NL80211_CMD_NEW_STATION)
 372         C2S(NL80211_CMD_DEL_STATION)
 373         C2S(NL80211_CMD_GET_MPATH)
 374         C2S(NL80211_CMD_SET_MPATH)
 375         C2S(NL80211_CMD_NEW_MPATH)
 376         C2S(NL80211_CMD_DEL_MPATH)
 377         C2S(NL80211_CMD_SET_BSS)
 378         C2S(NL80211_CMD_SET_REG)
 379         C2S(NL80211_CMD_REQ_SET_REG)
 380         C2S(NL80211_CMD_GET_MESH_CONFIG)
 381         C2S(NL80211_CMD_SET_MESH_CONFIG)
 382         C2S(NL80211_CMD_SET_MGMT_EXTRA_IE)
 383         C2S(NL80211_CMD_GET_REG)
 384         C2S(NL80211_CMD_GET_SCAN)
 385         C2S(NL80211_CMD_TRIGGER_SCAN)
 386         C2S(NL80211_CMD_NEW_SCAN_RESULTS)
 387         C2S(NL80211_CMD_SCAN_ABORTED)
 388         C2S(NL80211_CMD_REG_CHANGE)
 389         C2S(NL80211_CMD_AUTHENTICATE)
 390         C2S(NL80211_CMD_ASSOCIATE)
 391         C2S(NL80211_CMD_DEAUTHENTICATE)
 392         C2S(NL80211_CMD_DISASSOCIATE)
 393         C2S(NL80211_CMD_MICHAEL_MIC_FAILURE)
 394         C2S(NL80211_CMD_REG_BEACON_HINT)
 395         C2S(NL80211_CMD_JOIN_IBSS)
 396         C2S(NL80211_CMD_LEAVE_IBSS)
 397         C2S(NL80211_CMD_TESTMODE)
 398         C2S(NL80211_CMD_CONNECT)
 399         C2S(NL80211_CMD_ROAM)
 400         C2S(NL80211_CMD_DISCONNECT)
 401         C2S(NL80211_CMD_SET_WIPHY_NETNS)
 402         C2S(NL80211_CMD_GET_SURVEY)
 403         C2S(NL80211_CMD_NEW_SURVEY_RESULTS)
 404         C2S(NL80211_CMD_SET_PMKSA)
 405         C2S(NL80211_CMD_DEL_PMKSA)
 406         C2S(NL80211_CMD_FLUSH_PMKSA)
 407         C2S(NL80211_CMD_REMAIN_ON_CHANNEL)
 408         C2S(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL)
 409         C2S(NL80211_CMD_SET_TX_BITRATE_MASK)
 410         C2S(NL80211_CMD_REGISTER_FRAME)
 411         C2S(NL80211_CMD_FRAME)
 412         C2S(NL80211_CMD_FRAME_TX_STATUS)
 413         C2S(NL80211_CMD_SET_POWER_SAVE)
 414         C2S(NL80211_CMD_GET_POWER_SAVE)
 415         C2S(NL80211_CMD_SET_CQM)
 416         C2S(NL80211_CMD_NOTIFY_CQM)
 417         C2S(NL80211_CMD_SET_CHANNEL)
 418         C2S(NL80211_CMD_SET_WDS_PEER)
 419         C2S(NL80211_CMD_FRAME_WAIT_CANCEL)
 420         C2S(NL80211_CMD_JOIN_MESH)
 421         C2S(NL80211_CMD_LEAVE_MESH)
 422         C2S(NL80211_CMD_UNPROT_DEAUTHENTICATE)
 423         C2S(NL80211_CMD_UNPROT_DISASSOCIATE)
 424         C2S(NL80211_CMD_NEW_PEER_CANDIDATE)
 425         C2S(NL80211_CMD_GET_WOWLAN)
 426         C2S(NL80211_CMD_SET_WOWLAN)
 427         C2S(NL80211_CMD_START_SCHED_SCAN)
 428         C2S(NL80211_CMD_STOP_SCHED_SCAN)
 429         C2S(NL80211_CMD_SCHED_SCAN_RESULTS)
 430         C2S(NL80211_CMD_SCHED_SCAN_STOPPED)
 431         C2S(NL80211_CMD_SET_REKEY_OFFLOAD)
 432         C2S(NL80211_CMD_PMKSA_CANDIDATE)
 433         C2S(NL80211_CMD_TDLS_OPER)
 434         C2S(NL80211_CMD_TDLS_MGMT)
 435         C2S(NL80211_CMD_UNEXPECTED_FRAME)
 436         C2S(NL80211_CMD_PROBE_CLIENT)
 437         C2S(NL80211_CMD_REGISTER_BEACONS)
 438         C2S(NL80211_CMD_UNEXPECTED_4ADDR_FRAME)
 439         C2S(NL80211_CMD_SET_NOACK_MAP)
 440         C2S(NL80211_CMD_CH_SWITCH_NOTIFY)
 441         C2S(NL80211_CMD_START_P2P_DEVICE)
 442         C2S(NL80211_CMD_STOP_P2P_DEVICE)
 443         C2S(NL80211_CMD_CONN_FAILED)
 444         C2S(NL80211_CMD_SET_MCAST_RATE)
 445         C2S(NL80211_CMD_SET_MAC_ACL)
 446         C2S(NL80211_CMD_RADAR_DETECT)
 447         C2S(NL80211_CMD_GET_PROTOCOL_FEATURES)
 448         C2S(NL80211_CMD_UPDATE_FT_IES)
 449         C2S(NL80211_CMD_FT_EVENT)
 450         C2S(NL80211_CMD_CRIT_PROTOCOL_START)
 451         C2S(NL80211_CMD_CRIT_PROTOCOL_STOP)
 452         default:
 453                 return "NL80211_CMD_UNKNOWN";
 454         }
 455 #undef C2S
 456 }
 457
 458
 459 static int is_ap_interface(enum nl80211_iftype nlmode)
 460 {
 461         return (nlmode == NL80211_IFTYPE_AP ||
 462                 nlmode == NL80211_IFTYPE_P2P_GO);
 463 }
 464
 465
 466 static int is_sta_interface(enum nl80211_iftype nlmode)
 467 {
 468         return (nlmode == NL80211_IFTYPE_STATION ||
 469                 nlmode == NL80211_IFTYPE_P2P_CLIENT);
 470 }
 471
 472
 473 static int is_p2p_interface(enum nl80211_iftype nlmode)
 474 {
 475         return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 476                 nlmode == NL80211_IFTYPE_P2P_GO);
 477 }
 478
 479
 480 static void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 481 {
 482         if (drv->associated)
 483                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 484         drv->associated = 0;
 485         os_memset(drv->bssid, 0, ETH_ALEN);
 486 }
 487
 488
 489 struct nl80211_bss_info_arg {
 490         struct wpa_driver_nl80211_data *drv;
 491         struct wpa_scan_results *res;
 492         unsigned int assoc_freq;
 493         u8 assoc_bssid[ETH_ALEN];
 494 };
 495
 496 static int bss_info_handler(struct nl_msg *msg, void *arg);
 497
 498
 499 /* nl80211 code */
 500 static int ack_handler(struct nl_msg *msg, void *arg)
 501 {
 502         int *err = arg;
 503         *err = 0;
 504         return NL_STOP;
 505 }
 506
 507 static int finish_handler(struct nl_msg *msg, void *arg)
 508 {
 509         int *ret = arg;
 510         *ret = 0;
 511         return NL_SKIP;
 512 }
 513
 514 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 515                          void *arg)
 516 {
 517         int *ret = arg;
 518         *ret = err->error;
 519         return NL_SKIP;
 520 }
 521
 522
 523 static int no_seq_check(struct nl_msg *msg, void *arg)
 524 {
 525         return NL_OK;
 526 }
 527
 528
 529 static int send_and_recv(struct nl80211_global *global,
 530                          struct nl_handle *nl_handle, struct nl_msg *msg,
 531                          int (*valid_handler)(struct nl_msg *, void *),
 532                          void *valid_data)
 533 {
 534         struct nl_cb *cb;
 535         int err = -ENOMEM;
 536
 537         cb = nl_cb_clone(global->nl_cb);
 538         if (!cb)
 539                 goto out;
 540
 541         err = nl_send_auto_complete(nl_handle, msg);
 542         if (err < 0)
 543                 goto out;
 544
 545         err = 1;
 546
 547         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 548         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 549         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 550
 551         if (valid_handler)
 552                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 553                           valid_handler, valid_data);
 554
 555         while (err > 0)
 556                 nl_recvmsgs(nl_handle, cb);
 557  out:
 558         nl_cb_put(cb);
 559         nlmsg_free(msg);
 560         return err;
 561 }
 562
 563
 564 static int send_and_recv_msgs_global(struct nl80211_global *global,
 565                                      struct nl_msg *msg,
 566                                      int (*valid_handler)(struct nl_msg *, void *),
 567                                      void *valid_data)
 568 {
 569         return send_and_recv(global, global->nl, msg, valid_handler,
 570                              valid_data);
 571 }
 572
 573
 574 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 575                               struct nl_msg *msg,
 576                               int (*valid_handler)(struct nl_msg *, void *),
 577                               void *valid_data)
 578 {
 579         return send_and_recv(drv->global, drv->global->nl, msg,
 580                              valid_handler, valid_data);
 581 }
 582
 583
 584 struct family_data {
 585         const char *group;
 586         int id;
 587 };
 588
 589
 590 static int family_handler(struct nl_msg *msg, void *arg)
 591 {
 592         struct family_data *res = arg;
 593         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 594         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 595         struct nlattr *mcgrp;
 596         int i;
 597
 598         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 599                   genlmsg_attrlen(gnlh, 0), NULL);
 600         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 601                 return NL_SKIP;
 602
 603         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 604                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 605                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 606                           nla_len(mcgrp), NULL);
 607                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 608                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 609                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 610                                res->group,
 611                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 612                         continue;
 613                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 614                 break;
 615         };
 616
 617         return NL_SKIP;
 618 }
 619
 620
 621 static int nl_get_multicast_id(struct nl80211_global *global,
 622                                const char *family, const char *group)
 623 {
 624         struct nl_msg *msg;
 625         int ret = -1;
 626         struct family_data res = { group, -ENOENT };
 627
 628         msg = nlmsg_alloc();
 629         if (!msg)
 630                 return -ENOMEM;
 631         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 632                     0, 0, CTRL_CMD_GETFAMILY, 0);
 633         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 634
 635         ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
 636         msg = NULL;
 637         if (ret == 0)
 638                 ret = res.id;
 639
 640 nla_put_failure:
 641         nlmsg_free(msg);
 642         return ret;
 643 }
 644
 645
 646 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 647                           struct nl_msg *msg, int flags, uint8_t cmd)
 648 {
 649         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 650                            0, flags, cmd, 0);
 651 }
 652
 653
 654 struct wiphy_idx_data {
 655         int wiphy_idx;
 656 };
 657
 658
 659 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 660 {
 661         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 662         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 663         struct wiphy_idx_data *info = arg;
 664
 665         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 666                   genlmsg_attrlen(gnlh, 0), NULL);
 667
 668         if (tb[NL80211_ATTR_WIPHY])
 669                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 670
 671         return NL_SKIP;
 672 }
 673
 674
 675 static int nl80211_get_wiphy_index(struct i802_bss *bss)
 676 {
 677         struct nl_msg *msg;
 678         struct wiphy_idx_data data = {
 679                 .wiphy_idx = -1,
 680         };
 681
 682         msg = nlmsg_alloc();
 683         if (!msg)
 684                 return -1;
 685
 686         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 687
 688         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 689
 690         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 691                 return data.wiphy_idx;
 692         msg = NULL;
 693 nla_put_failure:
 694         nlmsg_free(msg);
 695         return -1;
 696 }
 697
 698
 699 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 700                                     struct nl80211_wiphy_data *w)
 701 {
 702         struct nl_msg *msg;
 703         int ret = -1;
 704
 705         msg = nlmsg_alloc();
 706         if (!msg)
 707                 return -1;
 708
 709         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
 710
 711         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
 712
 713         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 714         msg = NULL;
 715         if (ret) {
 716                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 717                            "failed: ret=%d (%s)",
 718                            ret, strerror(-ret));
 719                 goto nla_put_failure;
 720         }
 721         ret = 0;
 722 nla_put_failure:
 723         nlmsg_free(msg);
 724         return ret;
 725 }
 726
 727
 728 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 729 {
 730         struct nl80211_wiphy_data *w = eloop_ctx;
 731
 732         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 733
 734         nl_recvmsgs(handle, w->nl_cb);
 735 }
 736
 737
 738 static int process_beacon_event(struct nl_msg *msg, void *arg)
 739 {
 740         struct nl80211_wiphy_data *w = arg;
 741         struct wpa_driver_nl80211_data *drv;
 742         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 743         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 744         union wpa_event_data event;
 745
 746         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 747                   genlmsg_attrlen(gnlh, 0), NULL);
 748
 749         if (gnlh->cmd != NL80211_CMD_FRAME) {
 750                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 751                            gnlh->cmd);
 752                 return NL_SKIP;
 753         }
 754
 755         if (!tb[NL80211_ATTR_FRAME])
 756                 return NL_SKIP;
 757
 758         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 759                          wiphy_list) {
 760                 os_memset(&event, 0, sizeof(event));
 761                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 762                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 763                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 764         }
 765
 766         return NL_SKIP;
 767 }
 768
 769
 770 static struct nl80211_wiphy_data *
 771 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 772 {
 773         static DEFINE_DL_LIST(nl80211_wiphys);
 774         struct nl80211_wiphy_data *w;
 775         int wiphy_idx, found = 0;
 776         struct i802_bss *tmp_bss;
 777
 778         if (bss->wiphy_data != NULL)
 779                 return bss->wiphy_data;
 780
 781         wiphy_idx = nl80211_get_wiphy_index(bss);
 782
 783         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 784                 if (w->wiphy_idx == wiphy_idx)
 785                         goto add;
 786         }
 787
 788         /* alloc new one */
 789         w = os_zalloc(sizeof(*w));
 790         if (w == NULL)
 791                 return NULL;
 792         w->wiphy_idx = wiphy_idx;
 793         dl_list_init(&w->bsss);
 794         dl_list_init(&w->drvs);
 795
 796         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 797         if (!w->nl_cb) {
 798                 os_free(w);
 799                 return NULL;
 800         }
 801         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 802         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 803                   w);
 804
 805         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 806                                          "wiphy beacons");
 807         if (w->nl_beacons == NULL) {
 808                 os_free(w);
 809                 return NULL;
 810         }
 811
 812         if (nl80211_register_beacons(bss->drv, w)) {
 813                 nl_destroy_handles(&w->nl_beacons);
 814                 os_free(w);
 815                 return NULL;
 816         }
 817
 818         eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons),
 819                                  nl80211_recv_beacons, w, w->nl_beacons);
 820
 821         dl_list_add(&nl80211_wiphys, &w->list);
 822
 823 add:
 824         /* drv entry for this bss already there? */
 825         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 826                 if (tmp_bss->drv == bss->drv) {
 827                         found = 1;
 828                         break;
 829                 }
 830         }
 831         /* if not add it */
 832         if (!found)
 833                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 834
 835         dl_list_add(&w->bsss, &bss->wiphy_list);
 836         bss->wiphy_data = w;
 837         return w;
 838 }
 839
 840
 841 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 842 {
 843         struct nl80211_wiphy_data *w = bss->wiphy_data;
 844         struct i802_bss *tmp_bss;
 845         int found = 0;
 846
 847         if (w == NULL)
 848                 return;
 849         bss->wiphy_data = NULL;
 850         dl_list_del(&bss->wiphy_list);
 851
 852         /* still any for this drv present? */
 853         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 854                 if (tmp_bss->drv == bss->drv) {
 855                         found = 1;
 856                         break;
 857                 }
 858         }
 859         /* if not remove it */
 860         if (!found)
 861                 dl_list_del(&bss->drv->wiphy_list);
 862
 863         if (!dl_list_empty(&w->bsss))
 864                 return;
 865
 866         eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons));
 867
 868         nl_cb_put(w->nl_cb);
 869         nl_destroy_handles(&w->nl_beacons);
 870         dl_list_del(&w->list);
 871         os_free(w);
 872 }
 873
 874
 875 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 876 {
 877         struct i802_bss *bss = priv;
 878         struct wpa_driver_nl80211_data *drv = bss->drv;
 879         if (!drv->associated)
 880                 return -1;
 881         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 882         return 0;
 883 }
 884
 885
 886 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 887 {
 888         struct i802_bss *bss = priv;
 889         struct wpa_driver_nl80211_data *drv = bss->drv;
 890         if (!drv->associated)
 891                 return -1;
 892         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 893         return drv->ssid_len;
 894 }
 895
 896
 897 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 898                                           char *buf, size_t len, int del)
 899 {
 900         union wpa_event_data event;
 901
 902         os_memset(&event, 0, sizeof(event));
 903         if (len > sizeof(event.interface_status.ifname))
 904                 len = sizeof(event.interface_status.ifname) - 1;
 905         os_memcpy(event.interface_status.ifname, buf, len);
 906         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 907                 EVENT_INTERFACE_ADDED;
 908
 909         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 910                    del ? "DEL" : "NEW",
 911                    event.interface_status.ifname,
 912                    del ? "removed" : "added");
 913
 914         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 915                 if (del) {
 916                         if (drv->if_removed) {
 917                                 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
 918                                            "already set - ignore event");
 919                                 return;
 920                         }
 921                         drv->if_removed = 1;
 922                 } else {
 923                         if (if_nametoindex(drv->first_bss.ifname) == 0) {
 924                                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s "
 925                                            "does not exist - ignore "
 926                                            "RTM_NEWLINK",
 927                                            drv->first_bss.ifname);
 928                                 return;
 929                         }
 930                         if (!drv->if_removed) {
 931                                 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
 932                                            "already cleared - ignore event");
 933                                 return;
 934                         }
 935                         drv->if_removed = 0;
 936                 }
 937         }
 938
 939         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 940 }
 941
 942
 943 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 944                                          u8 *buf, size_t len)
 945 {
 946         int attrlen, rta_len;
 947         struct rtattr *attr;
 948
 949         attrlen = len;
 950         attr = (struct rtattr *) buf;
 951
 952         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 953         while (RTA_OK(attr, attrlen)) {
 954                 if (attr->rta_type == IFLA_IFNAME) {
 955                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 956                             == 0)
 957                                 return 1;
 958                         else
 959                                 break;
 960                 }
 961                 attr = RTA_NEXT(attr, attrlen);
 962         }
 963
 964         return 0;
 965 }
 966
 967
 968 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 969                                           int ifindex, u8 *buf, size_t len)
 970 {
 971         if (drv->ifindex == ifindex)
 972                 return 1;
 973
 974         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 975                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 976                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 977                            "interface");
 978                 wpa_driver_nl80211_finish_drv_init(drv);
 979                 return 1;
 980         }
 981
 982         return 0;
 983 }
 984
 985
 986 static struct wpa_driver_nl80211_data *
 987 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 988 {
 989         struct wpa_driver_nl80211_data *drv;
 990         dl_list_for_each(drv, &global->interfaces,
 991                          struct wpa_driver_nl80211_data, list) {
 992                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 993                     have_ifidx(drv, idx))
 994                         return drv;
 995         }
 996         return NULL;
 997 }
 998
 999
1000 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
1001                                                  struct ifinfomsg *ifi,
1002                                                  u8 *buf, size_t len)
1003 {
1004         struct nl80211_global *global = ctx;
1005         struct wpa_driver_nl80211_data *drv;
1006         int attrlen, rta_len;
1007         struct rtattr *attr;
1008         u32 brid = 0;
1009         char namebuf[IFNAMSIZ];
1010
1011         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1012         if (!drv) {
1013                 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
1014                            "ifindex %d", ifi->ifi_index);
1015                 return;
1016         }
1017
1018         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
1019                    "(%s%s%s%s)",
1020                    drv->operstate, ifi->ifi_flags,
1021                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1022                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1023                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1024                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1025
1026         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
1027                 if (if_indextoname(ifi->ifi_index, namebuf) &&
1028                     linux_iface_up(drv->global->ioctl_sock,
1029                                    drv->first_bss.ifname) > 0) {
1030                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
1031                                    "event since interface %s is up", namebuf);
1032                         return;
1033                 }
1034                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
1035                 if (drv->ignore_if_down_event) {
1036                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
1037                                    "event generated by mode change");
1038                         drv->ignore_if_down_event = 0;
1039                 } else {
1040                         drv->if_disabled = 1;
1041                         wpa_supplicant_event(drv->ctx,
1042                                              EVENT_INTERFACE_DISABLED, NULL);
1043                 }
1044         }
1045
1046         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
1047                 if (if_indextoname(ifi->ifi_index, namebuf) &&
1048                     linux_iface_up(drv->global->ioctl_sock,
1049                                    drv->first_bss.ifname) == 0) {
1050                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1051                                    "event since interface %s is down",
1052                                    namebuf);
1053                 } else if (if_nametoindex(drv->first_bss.ifname) == 0) {
1054                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1055                                    "event since interface %s does not exist",
1056                                    drv->first_bss.ifname);
1057                 } else if (drv->if_removed) {
1058                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1059                                    "event since interface %s is marked "
1060                                    "removed", drv->first_bss.ifname);
1061                 } else {
1062                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1063                         drv->if_disabled = 0;
1064                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1065                                              NULL);
1066                 }
1067         }
1068
1069         /*
1070          * Some drivers send the association event before the operup event--in
1071          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1072          * fails. This will hit us when wpa_supplicant does not need to do
1073          * IEEE 802.1X authentication
1074          */
1075         if (drv->operstate == 1 &&
1076             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1077             !(ifi->ifi_flags & IFF_RUNNING))
1078                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1079                                        -1, IF_OPER_UP);
1080
1081         attrlen = len;
1082         attr = (struct rtattr *) buf;
1083         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1084         while (RTA_OK(attr, attrlen)) {
1085                 if (attr->rta_type == IFLA_IFNAME) {
1086                         wpa_driver_nl80211_event_link(
1087                                 drv,
1088                                 ((char *) attr) + rta_len,
1089                                 attr->rta_len - rta_len, 0);
1090                 } else if (attr->rta_type == IFLA_MASTER)
1091                         brid = nla_get_u32((struct nlattr *) attr);
1092                 attr = RTA_NEXT(attr, attrlen);
1093         }
1094
1095         if (ifi->ifi_family == AF_BRIDGE && brid) {
1096                 /* device has been added to bridge */
1097                 if_indextoname(brid, namebuf);
1098                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1099                            brid, namebuf);
1100                 add_ifidx(drv, brid);
1101         }
1102 }
1103
1104
1105 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1106                                                  struct ifinfomsg *ifi,
1107                                                  u8 *buf, size_t len)
1108 {
1109         struct nl80211_global *global = ctx;
1110         struct wpa_driver_nl80211_data *drv;
1111         int attrlen, rta_len;
1112         struct rtattr *attr;
1113         u32 brid = 0;
1114
1115         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1116         if (!drv) {
1117                 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
1118                            "foreign ifindex %d", ifi->ifi_index);
1119                 return;
1120         }
1121
1122         attrlen = len;
1123         attr = (struct rtattr *) buf;
1124
1125         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1126         while (RTA_OK(attr, attrlen)) {
1127                 if (attr->rta_type == IFLA_IFNAME) {
1128                         wpa_driver_nl80211_event_link(
1129                                 drv,
1130                                 ((char *) attr) + rta_len,
1131                                 attr->rta_len - rta_len, 1);
1132                 } else if (attr->rta_type == IFLA_MASTER)
1133                         brid = nla_get_u32((struct nlattr *) attr);
1134                 attr = RTA_NEXT(attr, attrlen);
1135         }
1136
1137         if (ifi->ifi_family == AF_BRIDGE && brid) {
1138                 /* device has been removed from bridge */
1139                 char namebuf[IFNAMSIZ];
1140                 if_indextoname(brid, namebuf);
1141                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1142                            "%s", brid, namebuf);
1143                 del_ifidx(drv, brid);
1144         }
1145 }
1146
1147
1148 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
1149                             const u8 *frame, size_t len)
1150 {
1151         const struct ieee80211_mgmt *mgmt;
1152         union wpa_event_data event;
1153
1154         wpa_printf(MSG_DEBUG, "nl80211: Authenticate event");
1155         mgmt = (const struct ieee80211_mgmt *) frame;
1156         if (len < 24 + sizeof(mgmt->u.auth)) {
1157                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1158                            "frame");
1159                 return;
1160         }
1161
1162         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
1163         os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
1164         os_memset(&event, 0, sizeof(event));
1165         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1166         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1167         event.auth.auth_transaction =
1168                 le_to_host16(mgmt->u.auth.auth_transaction);
1169         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1170         if (len > 24 + sizeof(mgmt->u.auth)) {
1171                 event.auth.ies = mgmt->u.auth.variable;
1172                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1173         }
1174
1175         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1176 }
1177
1178
1179 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1180 {
1181         struct nl_msg *msg;
1182         int ret;
1183         struct nl80211_bss_info_arg arg;
1184
1185         os_memset(&arg, 0, sizeof(arg));
1186         msg = nlmsg_alloc();
1187         if (!msg)
1188                 goto nla_put_failure;
1189
1190         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1191         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1192
1193         arg.drv = drv;
1194         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1195         msg = NULL;
1196         if (ret == 0) {
1197                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1198                            "associated BSS from scan results: %u MHz",
1199                            arg.assoc_freq);
1200                 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
1201         }
1202         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1203                    "(%s)", ret, strerror(-ret));
1204 nla_put_failure:
1205         nlmsg_free(msg);
1206         return drv->assoc_freq;
1207 }
1208
1209
1210 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1211                             const u8 *frame, size_t len)
1212 {
1213         const struct ieee80211_mgmt *mgmt;
1214         union wpa_event_data event;
1215         u16 status;
1216
1217         wpa_printf(MSG_DEBUG, "nl80211: Associate event");
1218         mgmt = (const struct ieee80211_mgmt *) frame;
1219         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1220                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1221                            "frame");
1222                 return;
1223         }
1224
1225         status = le_to_host16(mgmt->u.assoc_resp.status_code);
1226         if (status != WLAN_STATUS_SUCCESS) {
1227                 os_memset(&event, 0, sizeof(event));
1228                 event.assoc_reject.bssid = mgmt->bssid;
1229                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1230                         event.assoc_reject.resp_ies =
1231                                 (u8 *) mgmt->u.assoc_resp.variable;
1232                         event.assoc_reject.resp_ies_len =
1233                                 len - 24 - sizeof(mgmt->u.assoc_resp);
1234                 }
1235                 event.assoc_reject.status_code = status;
1236
1237                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1238                 return;
1239         }
1240
1241         drv->associated = 1;
1242         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1243         os_memcpy(drv->prev_bssid, mgmt->sa, ETH_ALEN);
1244
1245         os_memset(&event, 0, sizeof(event));
1246         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1247                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1248                 event.assoc_info.resp_ies_len =
1249                         len - 24 - sizeof(mgmt->u.assoc_resp);
1250         }
1251
1252         event.assoc_info.freq = drv->assoc_freq;
1253
1254         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1255 }
1256
1257
1258 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
1259                                enum nl80211_commands cmd, struct nlattr *status,
1260                                struct nlattr *addr, struct nlattr *req_ie,
1261                                struct nlattr *resp_ie)
1262 {
1263         union wpa_event_data event;
1264
1265         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1266                 /*
1267                  * Avoid reporting two association events that would confuse
1268                  * the core code.
1269                  */
1270                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
1271                            "when using userspace SME", cmd);
1272                 return;
1273         }
1274
1275         if (cmd == NL80211_CMD_CONNECT)
1276                 wpa_printf(MSG_DEBUG, "nl80211: Connect event");
1277         else if (cmd == NL80211_CMD_ROAM)
1278                 wpa_printf(MSG_DEBUG, "nl80211: Roam event");
1279
1280         os_memset(&event, 0, sizeof(event));
1281         if (cmd == NL80211_CMD_CONNECT &&
1282             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
1283                 if (addr)
1284                         event.assoc_reject.bssid = nla_data(addr);
1285                 if (resp_ie) {
1286                         event.assoc_reject.resp_ies = nla_data(resp_ie);
1287                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
1288                 }
1289                 event.assoc_reject.status_code = nla_get_u16(status);
1290                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1291                 return;
1292         }
1293
1294         drv->associated = 1;
1295         if (addr) {
1296                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
1297                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
1298         }
1299
1300         if (req_ie) {
1301                 event.assoc_info.req_ies = nla_data(req_ie);
1302                 event.assoc_info.req_ies_len = nla_len(req_ie);
1303         }
1304         if (resp_ie) {
1305                 event.assoc_info.resp_ies = nla_data(resp_ie);
1306                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
1307         }
1308
1309         event.assoc_info.freq = nl80211_get_assoc_freq(drv);
1310
1311         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1312 }
1313
1314
1315 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
1316                                   struct nlattr *reason, struct nlattr *addr,
1317                                   struct nlattr *by_ap)
1318 {
1319         union wpa_event_data data;
1320         unsigned int locally_generated = by_ap == NULL;
1321
1322         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1323                 /*
1324                  * Avoid reporting two disassociation events that could
1325                  * confuse the core code.
1326                  */
1327                 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1328                            "event when using userspace SME");
1329                 return;
1330         }
1331
1332         if (drv->ignore_next_local_disconnect) {
1333                 drv->ignore_next_local_disconnect = 0;
1334                 if (locally_generated) {
1335                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1336                                    "event triggered during reassociation");
1337                         return;
1338                 }
1339                 wpa_printf(MSG_WARNING, "nl80211: Was expecting local "
1340                            "disconnect but got another disconnect "
1341                            "event first");
1342         }
1343
1344         wpa_printf(MSG_DEBUG, "nl80211: Disconnect event");
1345         nl80211_mark_disconnected(drv);
1346         os_memset(&data, 0, sizeof(data));
1347         if (reason)
1348                 data.deauth_info.reason_code = nla_get_u16(reason);
1349         data.deauth_info.locally_generated = by_ap == NULL;
1350         wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data);
1351 }
1352
1353
1354 static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
1355                                  struct nlattr *freq, struct nlattr *type)
1356 {
1357         union wpa_event_data data;
1358         int ht_enabled = 1;
1359         int chan_offset = 0;
1360
1361         wpa_printf(MSG_DEBUG, "nl80211: Channel switch event");
1362
1363         if (!freq || !type)
1364                 return;
1365
1366         switch (nla_get_u32(type)) {
1367         case NL80211_CHAN_NO_HT:
1368                 ht_enabled = 0;
1369                 break;
1370         case NL80211_CHAN_HT20:
1371                 break;
1372         case NL80211_CHAN_HT40PLUS:
1373                 chan_offset = 1;
1374                 break;
1375         case NL80211_CHAN_HT40MINUS:
1376                 chan_offset = -1;
1377                 break;
1378         }
1379
1380         data.ch_switch.freq = nla_get_u32(freq);
1381         data.ch_switch.ht_enabled = ht_enabled;
1382         data.ch_switch.ch_offset = chan_offset;
1383
1384         wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data);
1385 }
1386
1387
1388 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
1389                                enum nl80211_commands cmd, struct nlattr *addr)
1390 {
1391         union wpa_event_data event;
1392         enum wpa_event_type ev;
1393
1394         if (nla_len(addr) != ETH_ALEN)
1395                 return;
1396
1397         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
1398                    cmd, MAC2STR((u8 *) nla_data(addr)));
1399
1400         if (cmd == NL80211_CMD_AUTHENTICATE)
1401                 ev = EVENT_AUTH_TIMED_OUT;
1402         else if (cmd == NL80211_CMD_ASSOCIATE)
1403                 ev = EVENT_ASSOC_TIMED_OUT;
1404         else
1405                 return;
1406
1407         os_memset(&event, 0, sizeof(event));
1408         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
1409         wpa_supplicant_event(drv->ctx, ev, &event);
1410 }
1411
1412
1413 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
1414                             struct nlattr *freq, struct nlattr *sig,
1415                             const u8 *frame, size_t len)
1416 {
1417         const struct ieee80211_mgmt *mgmt;
1418         union wpa_event_data event;
1419         u16 fc, stype;
1420         int ssi_signal = 0;
1421
1422         wpa_printf(MSG_MSGDUMP, "nl80211: Frame event");
1423         mgmt = (const struct ieee80211_mgmt *) frame;
1424         if (len < 24) {
1425                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
1426                 return;
1427         }
1428
1429         fc = le_to_host16(mgmt->frame_control);
1430         stype = WLAN_FC_GET_STYPE(fc);
1431
1432         if (sig)
1433                 ssi_signal = (s32) nla_get_u32(sig);
1434
1435         os_memset(&event, 0, sizeof(event));
1436         if (freq) {
1437                 event.rx_action.freq = nla_get_u32(freq);
1438                 drv->last_mgmt_freq = event.rx_action.freq;
1439         }
1440         if (stype == WLAN_FC_STYPE_ACTION) {
1441                 event.rx_action.da = mgmt->da;
1442                 event.rx_action.sa = mgmt->sa;
1443                 event.rx_action.bssid = mgmt->bssid;
1444                 event.rx_action.category = mgmt->u.action.category;
1445                 event.rx_action.data = &mgmt->u.action.category + 1;
1446                 event.rx_action.len = frame + len - event.rx_action.data;
1447                 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
1448         } else {
1449                 event.rx_mgmt.frame = frame;
1450                 event.rx_mgmt.frame_len = len;
1451                 event.rx_mgmt.ssi_signal = ssi_signal;
1452                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
1453         }
1454 }
1455
1456
1457 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv,
1458                                       struct nlattr *cookie, const u8 *frame,
1459                                       size_t len, struct nlattr *ack)
1460 {
1461         union wpa_event_data event;
1462         const struct ieee80211_hdr *hdr;
1463         u16 fc;
1464
1465         wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event");
1466         if (!is_ap_interface(drv->nlmode)) {
1467                 u64 cookie_val;
1468
1469                 if (!cookie)
1470                         return;
1471
1472                 cookie_val = nla_get_u64(cookie);
1473                 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:"
1474                            " cookie=0%llx%s (ack=%d)",
1475                            (long long unsigned int) cookie_val,
1476                            cookie_val == drv->send_action_cookie ?
1477                            " (match)" : " (unknown)", ack != NULL);
1478                 if (cookie_val != drv->send_action_cookie)
1479                         return;
1480         }
1481
1482         hdr = (const struct ieee80211_hdr *) frame;
1483         fc = le_to_host16(hdr->frame_control);
1484
1485         os_memset(&event, 0, sizeof(event));
1486         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
1487         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
1488         event.tx_status.dst = hdr->addr1;
1489         event.tx_status.data = frame;
1490         event.tx_status.data_len = len;
1491         event.tx_status.ack = ack != NULL;
1492         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
1493 }
1494
1495
1496 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
1497                                        enum wpa_event_type type,
1498                                        const u8 *frame, size_t len)
1499 {
1500         const struct ieee80211_mgmt *mgmt;
1501         union wpa_event_data event;
1502         const u8 *bssid = NULL;
1503         u16 reason_code = 0;
1504
1505         if (type == EVENT_DEAUTH)
1506                 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event");
1507         else
1508                 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event");
1509
1510         mgmt = (const struct ieee80211_mgmt *) frame;
1511         if (len >= 24) {
1512                 bssid = mgmt->bssid;
1513
1514                 if ((drv->capa.flags & WPA_DRIVER_FLAGS_SME) &&
1515                     !drv->associated &&
1516                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0 &&
1517                     os_memcmp(bssid, drv->auth_attempt_bssid, ETH_ALEN) != 0 &&
1518                     os_memcmp(bssid, drv->prev_bssid, ETH_ALEN) == 0) {
1519                         /*
1520                          * Avoid issues with some roaming cases where
1521                          * disconnection event for the old AP may show up after
1522                          * we have started connection with the new AP.
1523                          */
1524                         wpa_printf(MSG_DEBUG, "nl80211: Ignore deauth/disassoc event from old AP " MACSTR " when already authenticating with " MACSTR,
1525                                    MAC2STR(bssid),
1526                                    MAC2STR(drv->auth_attempt_bssid));
1527                         return;
1528                 }
1529
1530                 if (drv->associated != 0 &&
1531                     os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1532                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1533                         /*
1534                          * We have presumably received this deauth as a
1535                          * response to a clear_state_mismatch() outgoing
1536                          * deauth.  Don't let it take us offline!
1537                          */
1538                         wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1539                                    "from Unknown BSSID " MACSTR " -- ignoring",
1540                                    MAC2STR(bssid));
1541                         return;
1542                 }
1543         }
1544
1545         nl80211_mark_disconnected(drv);
1546         os_memset(&event, 0, sizeof(event));
1547
1548         /* Note: Same offset for Reason Code in both frame subtypes */
1549         if (len >= 24 + sizeof(mgmt->u.deauth))
1550                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1551
1552         if (type == EVENT_DISASSOC) {
1553                 event.disassoc_info.locally_generated =
1554                         !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1555                 event.disassoc_info.addr = bssid;
1556                 event.disassoc_info.reason_code = reason_code;
1557                 if (frame + len > mgmt->u.disassoc.variable) {
1558                         event.disassoc_info.ie = mgmt->u.disassoc.variable;
1559                         event.disassoc_info.ie_len = frame + len -
1560                                 mgmt->u.disassoc.variable;
1561                 }
1562         } else {
1563                 event.deauth_info.locally_generated =
1564                         !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1565                 event.deauth_info.addr = bssid;
1566                 event.deauth_info.reason_code = reason_code;
1567                 if (frame + len > mgmt->u.deauth.variable) {
1568                         event.deauth_info.ie = mgmt->u.deauth.variable;
1569                         event.deauth_info.ie_len = frame + len -
1570                                 mgmt->u.deauth.variable;
1571                 }
1572         }
1573
1574         wpa_supplicant_event(drv->ctx, type, &event);
1575 }
1576
1577
1578 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1579                                          enum wpa_event_type type,
1580                                          const u8 *frame, size_t len)
1581 {
1582         const struct ieee80211_mgmt *mgmt;
1583         union wpa_event_data event;
1584         u16 reason_code = 0;
1585
1586         if (type == EVENT_UNPROT_DEAUTH)
1587                 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event");
1588         else
1589                 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event");
1590
1591         if (len < 24)
1592                 return;
1593
1594         mgmt = (const struct ieee80211_mgmt *) frame;
1595
1596         os_memset(&event, 0, sizeof(event));
1597         /* Note: Same offset for Reason Code in both frame subtypes */
1598         if (len >= 24 + sizeof(mgmt->u.deauth))
1599                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1600
1601         if (type == EVENT_UNPROT_DISASSOC) {
1602                 event.unprot_disassoc.sa = mgmt->sa;
1603                 event.unprot_disassoc.da = mgmt->da;
1604                 event.unprot_disassoc.reason_code = reason_code;
1605         } else {
1606                 event.unprot_deauth.sa = mgmt->sa;
1607                 event.unprot_deauth.da = mgmt->da;
1608                 event.unprot_deauth.reason_code = reason_code;
1609         }
1610
1611         wpa_supplicant_event(drv->ctx, type, &event);
1612 }
1613
1614
1615 static void mlme_event(struct i802_bss *bss,
1616                        enum nl80211_commands cmd, struct nlattr *frame,
1617                        struct nlattr *addr, struct nlattr *timed_out,
1618                        struct nlattr *freq, struct nlattr *ack,
1619                        struct nlattr *cookie, struct nlattr *sig)
1620 {
1621         struct wpa_driver_nl80211_data *drv = bss->drv;
1622         const u8 *data;
1623         size_t len;
1624
1625         if (timed_out && addr) {
1626                 mlme_timeout_event(drv, cmd, addr);
1627                 return;
1628         }
1629
1630         if (frame == NULL) {
1631                 wpa_printf(MSG_DEBUG,
1632                            "nl80211: MLME event %d (%s) without frame data",
1633                            cmd, nl80211_command_to_string(cmd));
1634                 return;
1635         }
1636
1637         data = nla_data(frame);
1638         len = nla_len(frame);
1639         if (len < 4 + 2 * ETH_ALEN) {
1640                 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s("
1641                            MACSTR ") - too short",
1642                            cmd, nl80211_command_to_string(cmd), bss->ifname,
1643                            MAC2STR(bss->addr));
1644                 return;
1645         }
1646         wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s(" MACSTR
1647                    ") A1=" MACSTR " A2=" MACSTR, cmd,
1648                    nl80211_command_to_string(cmd), bss->ifname,
1649                    MAC2STR(bss->addr), MAC2STR(data + 4),
1650                    MAC2STR(data + 4 + ETH_ALEN));
1651         if (cmd != NL80211_CMD_FRAME_TX_STATUS && !(data[4] & 0x01) &&
1652             os_memcmp(bss->addr, data + 4, ETH_ALEN) != 0 &&
1653             os_memcmp(bss->addr, data + 4 + ETH_ALEN, ETH_ALEN) != 0) {
1654                 wpa_printf(MSG_MSGDUMP, "nl80211: %s: Ignore MLME frame event "
1655                            "for foreign address", bss->ifname);
1656                 return;
1657         }
1658         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1659                     nla_data(frame), nla_len(frame));
1660
1661         switch (cmd) {
1662         case NL80211_CMD_AUTHENTICATE:
1663                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1664                 break;
1665         case NL80211_CMD_ASSOCIATE:
1666                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1667                 break;
1668         case NL80211_CMD_DEAUTHENTICATE:
1669                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1670                                            nla_data(frame), nla_len(frame));
1671                 break;
1672         case NL80211_CMD_DISASSOCIATE:
1673                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1674                                            nla_data(frame), nla_len(frame));
1675                 break;
1676         case NL80211_CMD_FRAME:
1677                 mlme_event_mgmt(drv, freq, sig, nla_data(frame),
1678                                 nla_len(frame));
1679                 break;
1680         case NL80211_CMD_FRAME_TX_STATUS:
1681                 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame),
1682                                           nla_len(frame), ack);
1683                 break;
1684         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1685                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1686                                              nla_data(frame), nla_len(frame));
1687                 break;
1688         case NL80211_CMD_UNPROT_DISASSOCIATE:
1689                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1690                                              nla_data(frame), nla_len(frame));
1691                 break;
1692         default:
1693                 break;
1694         }
1695 }
1696
1697
1698 static void mlme_event_michael_mic_failure(struct i802_bss *bss,
1699                                            struct nlattr *tb[])
1700 {
1701         union wpa_event_data data;
1702
1703         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1704         os_memset(&data, 0, sizeof(data));
1705         if (tb[NL80211_ATTR_MAC]) {
1706                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1707                             nla_data(tb[NL80211_ATTR_MAC]),
1708                             nla_len(tb[NL80211_ATTR_MAC]));
1709                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1710         }
1711         if (tb[NL80211_ATTR_KEY_SEQ]) {
1712                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1713                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1714                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1715         }
1716         if (tb[NL80211_ATTR_KEY_TYPE]) {
1717                 enum nl80211_key_type key_type =
1718                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1719                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1720                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1721                         data.michael_mic_failure.unicast = 1;
1722         } else
1723                 data.michael_mic_failure.unicast = 1;
1724
1725         if (tb[NL80211_ATTR_KEY_IDX]) {
1726                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1727                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1728         }
1729
1730         wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1731 }
1732
1733
1734 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1735                                  struct nlattr *tb[])
1736 {
1737         if (tb[NL80211_ATTR_MAC] == NULL) {
1738                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1739                            "event");
1740                 return;
1741         }
1742         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1743         drv->associated = 1;
1744         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1745                    MAC2STR(drv->bssid));
1746
1747         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1748 }
1749
1750
1751 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1752                                          int cancel_event, struct nlattr *tb[])
1753 {
1754         unsigned int freq, chan_type, duration;
1755         union wpa_event_data data;
1756         u64 cookie;
1757
1758         if (tb[NL80211_ATTR_WIPHY_FREQ])
1759                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1760         else
1761                 freq = 0;
1762
1763         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1764                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1765         else
1766                 chan_type = 0;
1767
1768         if (tb[NL80211_ATTR_DURATION])
1769                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1770         else
1771                 duration = 0;
1772
1773         if (tb[NL80211_ATTR_COOKIE])
1774                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1775         else
1776                 cookie = 0;
1777
1778         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1779                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1780                    cancel_event, freq, chan_type, duration,
1781                    (long long unsigned int) cookie,
1782                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1783
1784         if (cookie != drv->remain_on_chan_cookie)
1785                 return; /* not for us */
1786
1787         if (cancel_event)
1788                 drv->pending_remain_on_chan = 0;
1789
1790         os_memset(&data, 0, sizeof(data));
1791         data.remain_on_channel.freq = freq;
1792         data.remain_on_channel.duration = duration;
1793         wpa_supplicant_event(drv->ctx, cancel_event ?
1794                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
1795                              EVENT_REMAIN_ON_CHANNEL, &data);
1796 }
1797
1798
1799 static void mlme_event_ft_event(struct wpa_driver_nl80211_data *drv,
1800                                 struct nlattr *tb[])
1801 {
1802         union wpa_event_data data;
1803
1804         os_memset(&data, 0, sizeof(data));
1805
1806         if (tb[NL80211_ATTR_IE]) {
1807                 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]);
1808                 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]);
1809         }
1810
1811         if (tb[NL80211_ATTR_IE_RIC]) {
1812                 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]);
1813                 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]);
1814         }
1815
1816         if (tb[NL80211_ATTR_MAC])
1817                 os_memcpy(data.ft_ies.target_ap,
1818                           nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1819
1820         wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR,
1821                    MAC2STR(data.ft_ies.target_ap));
1822
1823         wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data);
1824 }
1825
1826
1827 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1828                             struct nlattr *tb[])
1829 {
1830         union wpa_event_data event;
1831         struct nlattr *nl;
1832         int rem;
1833         struct scan_info *info;
1834 #define MAX_REPORT_FREQS 50
1835         int freqs[MAX_REPORT_FREQS];
1836         int num_freqs = 0;
1837
1838         if (drv->scan_for_auth) {
1839                 drv->scan_for_auth = 0;
1840                 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing "
1841                            "cfg80211 BSS entry");
1842                 wpa_driver_nl80211_authenticate_retry(drv);
1843                 return;
1844         }
1845
1846         os_memset(&event, 0, sizeof(event));
1847         info = &event.scan_info;
1848         info->aborted = aborted;
1849
1850         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1851                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1852                         struct wpa_driver_scan_ssid *s =
1853                                 &info->ssids[info->num_ssids];
1854                         s->ssid = nla_data(nl);
1855                         s->ssid_len = nla_len(nl);
1856                         info->num_ssids++;
1857                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1858                                 break;
1859                 }
1860         }
1861         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1862                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1863                 {
1864                         freqs[num_freqs] = nla_get_u32(nl);
1865                         num_freqs++;
1866                         if (num_freqs == MAX_REPORT_FREQS - 1)
1867                                 break;
1868                 }
1869                 info->freqs = freqs;
1870                 info->num_freqs = num_freqs;
1871         }
1872         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1873 }
1874
1875
1876 static int get_link_signal(struct nl_msg *msg, void *arg)
1877 {
1878         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1879         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1880         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1881         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1882                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1883         };
1884         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1885         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1886                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1887                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1888                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1889                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1890         };
1891         struct wpa_signal_info *sig_change = arg;
1892
1893         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1894                   genlmsg_attrlen(gnlh, 0), NULL);
1895         if (!tb[NL80211_ATTR_STA_INFO] ||
1896             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1897                              tb[NL80211_ATTR_STA_INFO], policy))
1898                 return NL_SKIP;
1899         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1900                 return NL_SKIP;
1901
1902         sig_change->current_signal =
1903                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1904
1905         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1906                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1907                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1908                                      rate_policy)) {
1909                         sig_change->current_txrate = 0;
1910                 } else {
1911                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1912                                 sig_change->current_txrate =
1913                                         nla_get_u16(rinfo[
1914                                              NL80211_RATE_INFO_BITRATE]) * 100;
1915                         }
1916                 }
1917         }
1918
1919         return NL_SKIP;
1920 }
1921
1922
1923 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1924                                    struct wpa_signal_info *sig)
1925 {
1926         struct nl_msg *msg;
1927
1928         sig->current_signal = -9999;
1929         sig->current_txrate = 0;
1930
1931         msg = nlmsg_alloc();
1932         if (!msg)
1933                 return -ENOMEM;
1934
1935         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1936
1937         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1938         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1939
1940         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1941  nla_put_failure:
1942         nlmsg_free(msg);
1943         return -ENOBUFS;
1944 }
1945
1946
1947 static int get_link_noise(struct nl_msg *msg, void *arg)
1948 {
1949         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1950         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1951         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1952         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1953                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1954                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1955         };
1956         struct wpa_signal_info *sig_change = arg;
1957
1958         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1959                   genlmsg_attrlen(gnlh, 0), NULL);
1960
1961         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1962                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1963                 return NL_SKIP;
1964         }
1965
1966         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1967                              tb[NL80211_ATTR_SURVEY_INFO],
1968                              survey_policy)) {
1969                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1970                            "attributes!");
1971                 return NL_SKIP;
1972         }
1973
1974         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1975                 return NL_SKIP;
1976
1977         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1978             sig_change->frequency)
1979                 return NL_SKIP;
1980
1981         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1982                 return NL_SKIP;
1983
1984         sig_change->current_noise =
1985                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1986
1987         return NL_SKIP;
1988 }
1989
1990
1991 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1992                                   struct wpa_signal_info *sig_change)
1993 {
1994         struct nl_msg *msg;
1995
1996         sig_change->current_noise = 9999;
1997         sig_change->frequency = drv->assoc_freq;
1998
1999         msg = nlmsg_alloc();
2000         if (!msg)
2001                 return -ENOMEM;
2002
2003         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
2004
2005         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2006
2007         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
2008  nla_put_failure:
2009         nlmsg_free(msg);
2010         return -ENOBUFS;
2011 }
2012
2013
2014 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
2015 {
2016         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2017         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2018         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
2019         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
2020                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
2021                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
2022         };
2023         struct wpa_scan_results *scan_results = arg;
2024         struct wpa_scan_res *scan_res;
2025         size_t i;
2026
2027         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2028                   genlmsg_attrlen(gnlh, 0), NULL);
2029
2030         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
2031                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
2032                 return NL_SKIP;
2033         }
2034
2035         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
2036                              tb[NL80211_ATTR_SURVEY_INFO],
2037                              survey_policy)) {
2038                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
2039                            "attributes");
2040                 return NL_SKIP;
2041         }
2042
2043         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
2044                 return NL_SKIP;
2045
2046         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
2047                 return NL_SKIP;
2048
2049         for (i = 0; i < scan_results->num; ++i) {
2050                 scan_res = scan_results->res[i];
2051                 if (!scan_res)
2052                         continue;
2053                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
2054                     scan_res->freq)
2055                         continue;
2056                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
2057                         continue;
2058                 scan_res->noise = (s8)
2059                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
2060                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
2061         }
2062
2063         return NL_SKIP;
2064 }
2065
2066
2067 static int nl80211_get_noise_for_scan_results(
2068         struct wpa_driver_nl80211_data *drv,
2069         struct wpa_scan_results *scan_res)
2070 {
2071         struct nl_msg *msg;
2072
2073         msg = nlmsg_alloc();
2074         if (!msg)
2075                 return -ENOMEM;
2076
2077         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
2078
2079         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2080
2081         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
2082                                   scan_res);
2083  nla_put_failure:
2084         nlmsg_free(msg);
2085         return -ENOBUFS;
2086 }
2087
2088
2089 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
2090                               struct nlattr *tb[])
2091 {
2092         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
2093                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
2094                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
2095                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
2096                 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
2097         };
2098         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
2099         enum nl80211_cqm_rssi_threshold_event event;
2100         union wpa_event_data ed;
2101         struct wpa_signal_info sig;
2102         int res;
2103
2104         if (tb[NL80211_ATTR_CQM] == NULL ||
2105             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
2106                              cqm_policy)) {
2107                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
2108                 return;
2109         }
2110
2111         os_memset(&ed, 0, sizeof(ed));
2112
2113         if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
2114                 if (!tb[NL80211_ATTR_MAC])
2115                         return;
2116                 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
2117                           ETH_ALEN);
2118                 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
2119                 return;
2120         }
2121
2122         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
2123                 return;
2124         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
2125
2126         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
2127                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
2128                            "event: RSSI high");
2129                 ed.signal_change.above_threshold = 1;
2130         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
2131                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
2132                            "event: RSSI low");
2133                 ed.signal_change.above_threshold = 0;
2134         } else
2135                 return;
2136
2137         res = nl80211_get_link_signal(drv, &sig);
2138         if (res == 0) {
2139                 ed.signal_change.current_signal = sig.current_signal;
2140                 ed.signal_change.current_txrate = sig.current_txrate;
2141                 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm  txrate: %d",
2142                            sig.current_signal, sig.current_txrate);
2143         }
2144
2145         res = nl80211_get_link_noise(drv, &sig);
2146         if (res == 0) {
2147                 ed.signal_change.current_noise = sig.current_noise;
2148                 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
2149                            sig.current_noise);
2150         }
2151
2152         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
2153 }
2154
2155
2156 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
2157                                       struct nlattr **tb)
2158 {
2159         u8 *addr;
2160         union wpa_event_data data;
2161
2162         if (tb[NL80211_ATTR_MAC] == NULL)
2163                 return;
2164         addr = nla_data(tb[NL80211_ATTR_MAC]);
2165         wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
2166
2167         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
2168                 u8 *ies = NULL;
2169                 size_t ies_len = 0;
2170                 if (tb[NL80211_ATTR_IE]) {
2171                         ies = nla_data(tb[NL80211_ATTR_IE]);
2172                         ies_len = nla_len(tb[NL80211_ATTR_IE]);
2173                 }
2174                 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
2175                 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
2176                 return;
2177         }
2178
2179         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
2180                 return;
2181
2182         os_memset(&data, 0, sizeof(data));
2183         os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
2184         wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
2185 }
2186
2187
2188 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
2189                                       struct nlattr **tb)
2190 {
2191         u8 *addr;
2192         union wpa_event_data data;
2193
2194         if (tb[NL80211_ATTR_MAC] == NULL)
2195                 return;
2196         addr = nla_data(tb[NL80211_ATTR_MAC]);
2197         wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
2198                    MAC2STR(addr));
2199
2200         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
2201                 drv_event_disassoc(drv->ctx, addr);
2202                 return;
2203         }
2204
2205         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
2206                 return;
2207
2208         os_memset(&data, 0, sizeof(data));
2209         os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
2210         wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
2211 }
2212
2213
2214 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
2215                                         struct nlattr **tb)
2216 {
2217         struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
2218         static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
2219                 [NL80211_REKEY_DATA_KEK] = {
2220                         .minlen = NL80211_KEK_LEN,
2221                         .maxlen = NL80211_KEK_LEN,
2222                 },
2223                 [NL80211_REKEY_DATA_KCK] = {
2224                         .minlen = NL80211_KCK_LEN,
2225                         .maxlen = NL80211_KCK_LEN,
2226                 },
2227                 [NL80211_REKEY_DATA_REPLAY_CTR] = {
2228                         .minlen = NL80211_REPLAY_CTR_LEN,
2229                         .maxlen = NL80211_REPLAY_CTR_LEN,
2230                 },
2231         };
2232         union wpa_event_data data;
2233
2234         if (!tb[NL80211_ATTR_MAC])
2235                 return;
2236         if (!tb[NL80211_ATTR_REKEY_DATA])
2237                 return;
2238         if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
2239                              tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
2240                 return;
2241         if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
2242                 return;
2243
2244         os_memset(&data, 0, sizeof(data));
2245         data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
2246         wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
2247                    MAC2STR(data.driver_gtk_rekey.bssid));
2248         data.driver_gtk_rekey.replay_ctr =
2249                 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
2250         wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
2251                     data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
2252         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
2253 }
2254
2255
2256 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
2257                                           struct nlattr **tb)
2258 {
2259         struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
2260         static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
2261                 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
2262                 [NL80211_PMKSA_CANDIDATE_BSSID] = {
2263                         .minlen = ETH_ALEN,
2264                         .maxlen = ETH_ALEN,
2265                 },
2266                 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
2267         };
2268         union wpa_event_data data;
2269
2270         wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event");
2271
2272         if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
2273                 return;
2274         if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
2275                              tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
2276                 return;
2277         if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
2278             !cand[NL80211_PMKSA_CANDIDATE_BSSID])
2279                 return;
2280
2281         os_memset(&data, 0, sizeof(data));
2282         os_memcpy(data.pmkid_candidate.bssid,
2283                   nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
2284         data.pmkid_candidate.index =
2285                 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
2286         data.pmkid_candidate.preauth =
2287                 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
2288         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
2289 }
2290
2291
2292 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
2293                                        struct nlattr **tb)
2294 {
2295         union wpa_event_data data;
2296
2297         wpa_printf(MSG_DEBUG, "nl80211: Probe client event");
2298
2299         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
2300                 return;
2301
2302         os_memset(&data, 0, sizeof(data));
2303         os_memcpy(data.client_poll.addr,
2304                   nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2305
2306         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
2307 }
2308
2309
2310 static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv,
2311                                     struct nlattr **tb)
2312 {
2313         union wpa_event_data data;
2314
2315         wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event");
2316
2317         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION])
2318                 return;
2319
2320         os_memset(&data, 0, sizeof(data));
2321         os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2322         switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) {
2323         case NL80211_TDLS_SETUP:
2324                 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer "
2325                            MACSTR, MAC2STR(data.tdls.peer));
2326                 data.tdls.oper = TDLS_REQUEST_SETUP;
2327                 break;
2328         case NL80211_TDLS_TEARDOWN:
2329                 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer "
2330                            MACSTR, MAC2STR(data.tdls.peer));
2331                 data.tdls.oper = TDLS_REQUEST_TEARDOWN;
2332                 break;
2333         default:
2334                 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione "
2335                            "event");
2336                 return;
2337         }
2338         if (tb[NL80211_ATTR_REASON_CODE]) {
2339                 data.tdls.reason_code =
2340                         nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
2341         }
2342
2343         wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data);
2344 }
2345
2346
2347 static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv,
2348                                          struct nlattr **tb)
2349 {
2350         union wpa_event_data data;
2351         u32 reason;
2352
2353         wpa_printf(MSG_DEBUG, "nl80211: Connect failed event");
2354
2355         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON])
2356                 return;
2357
2358         os_memset(&data, 0, sizeof(data));
2359         os_memcpy(data.connect_failed_reason.addr,
2360                   nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2361
2362         reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]);
2363         switch (reason) {
2364         case NL80211_CONN_FAIL_MAX_CLIENTS:
2365                 wpa_printf(MSG_DEBUG, "nl80211: Max client reached");
2366                 data.connect_failed_reason.code = MAX_CLIENT_REACHED;
2367                 break;
2368         case NL80211_CONN_FAIL_BLOCKED_CLIENT:
2369                 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR
2370                            " tried to connect",
2371                            MAC2STR(data.connect_failed_reason.addr));
2372                 data.connect_failed_reason.code = BLOCKED_CLIENT;
2373                 break;
2374         default:
2375                 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason "
2376                            "%u", reason);
2377                 return;
2378         }
2379
2380         wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data);
2381 }
2382
2383
2384 static void nl80211_radar_event(struct wpa_driver_nl80211_data *drv,
2385                                 struct nlattr **tb)
2386 {
2387         union wpa_event_data data;
2388         enum nl80211_radar_event event_type;
2389
2390         if (!tb[NL80211_ATTR_WIPHY_FREQ] || !tb[NL80211_ATTR_RADAR_EVENT])
2391                 return;
2392
2393         os_memset(&data, 0, sizeof(data));
2394         data.dfs_event.freq = nla_get_u16(tb[NL80211_ATTR_WIPHY_FREQ]);
2395         event_type = nla_get_u8(tb[NL80211_ATTR_RADAR_EVENT]);
2396
2397         wpa_printf(MSG_DEBUG, "nl80211: DFS event on freq %d MHz",
2398                    data.dfs_event.freq);
2399
2400         switch (event_type) {
2401         case NL80211_RADAR_DETECTED:
2402                 wpa_supplicant_event(drv->ctx, EVENT_DFS_RADAR_DETECTED, &data);
2403                 break;
2404         case NL80211_RADAR_CAC_FINISHED:
2405                 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_FINISHED, &data);
2406                 break;
2407         case NL80211_RADAR_CAC_ABORTED:
2408                 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_ABORTED, &data);
2409                 break;
2410         case NL80211_RADAR_NOP_FINISHED:
2411                 wpa_supplicant_event(drv->ctx, EVENT_DFS_NOP_FINISHED, &data);
2412                 break;
2413         default:
2414                 wpa_printf(MSG_DEBUG, "nl80211: Unknown radar event %d "
2415                            "received", event_type);
2416                 break;
2417         }
2418 }
2419
2420
2421 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
2422                                    int wds)
2423 {
2424         struct wpa_driver_nl80211_data *drv = bss->drv;
2425         union wpa_event_data event;
2426
2427         if (!tb[NL80211_ATTR_MAC])
2428                 return;
2429
2430         os_memset(&event, 0, sizeof(event));
2431         event.rx_from_unknown.bssid = bss->addr;
2432         event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
2433         event.rx_from_unknown.wds = wds;
2434
2435         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2436 }
2437
2438
2439 static void do_process_drv_event(struct i802_bss *bss, int cmd,
2440                                  struct nlattr **tb)
2441 {
2442         struct wpa_driver_nl80211_data *drv = bss->drv;
2443
2444         wpa_printf(MSG_DEBUG, "nl80211: Drv Event %d (%s) received for %s",
2445                    cmd, nl80211_command_to_string(cmd), bss->ifname);
2446
2447         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
2448             (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
2449              cmd == NL80211_CMD_SCAN_ABORTED)) {
2450                 wpa_driver_nl80211_set_mode(&drv->first_bss,
2451                                             drv->ap_scan_as_station);
2452                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2453         }
2454
2455         switch (cmd) {
2456         case NL80211_CMD_TRIGGER_SCAN:
2457                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger");
2458                 break;
2459         case NL80211_CMD_START_SCHED_SCAN:
2460                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started");
2461                 break;
2462         case NL80211_CMD_SCHED_SCAN_STOPPED:
2463                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped");
2464                 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
2465                 break;
2466         case NL80211_CMD_NEW_SCAN_RESULTS:
2467                 wpa_dbg(drv->ctx, MSG_DEBUG,
2468                         "nl80211: New scan results available");
2469                 drv->scan_complete_events = 1;
2470                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2471                                      drv->ctx);
2472                 send_scan_event(drv, 0, tb);
2473                 break;
2474         case NL80211_CMD_SCHED_SCAN_RESULTS:
2475                 wpa_dbg(drv->ctx, MSG_DEBUG,
2476                         "nl80211: New sched scan results available");
2477                 send_scan_event(drv, 0, tb);
2478                 break;
2479         case NL80211_CMD_SCAN_ABORTED:
2480                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted");
2481                 /*
2482                  * Need to indicate that scan results are available in order
2483                  * not to make wpa_supplicant stop its scanning.
2484                  */
2485                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2486                                      drv->ctx);
2487                 send_scan_event(drv, 1, tb);
2488                 break;
2489         case NL80211_CMD_AUTHENTICATE:
2490         case NL80211_CMD_ASSOCIATE:
2491         case NL80211_CMD_DEAUTHENTICATE:
2492         case NL80211_CMD_DISASSOCIATE:
2493         case NL80211_CMD_FRAME_TX_STATUS:
2494         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
2495         case NL80211_CMD_UNPROT_DISASSOCIATE:
2496                 mlme_event(bss, cmd, tb[NL80211_ATTR_FRAME],
2497                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2498                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2499                            tb[NL80211_ATTR_COOKIE],
2500                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2501                 break;
2502         case NL80211_CMD_CONNECT:
2503         case NL80211_CMD_ROAM:
2504                 mlme_event_connect(drv, cmd,
2505                                    tb[NL80211_ATTR_STATUS_CODE],
2506                                    tb[NL80211_ATTR_MAC],
2507                                    tb[NL80211_ATTR_REQ_IE],
2508                                    tb[NL80211_ATTR_RESP_IE]);
2509                 break;
2510         case NL80211_CMD_CH_SWITCH_NOTIFY:
2511                 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ],
2512                                      tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2513                 break;
2514         case NL80211_CMD_DISCONNECT:
2515                 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
2516                                       tb[NL80211_ATTR_MAC],
2517                                       tb[NL80211_ATTR_DISCONNECTED_BY_AP]);
2518                 break;
2519         case NL80211_CMD_MICHAEL_MIC_FAILURE:
2520                 mlme_event_michael_mic_failure(bss, tb);
2521                 break;
2522         case NL80211_CMD_JOIN_IBSS:
2523                 mlme_event_join_ibss(drv, tb);
2524                 break;
2525         case NL80211_CMD_REMAIN_ON_CHANNEL:
2526                 mlme_event_remain_on_channel(drv, 0, tb);
2527                 break;
2528         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
2529                 mlme_event_remain_on_channel(drv, 1, tb);
2530                 break;
2531         case NL80211_CMD_NOTIFY_CQM:
2532                 nl80211_cqm_event(drv, tb);
2533                 break;
2534         case NL80211_CMD_REG_CHANGE:
2535                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
2536                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2537                                      NULL);
2538                 break;
2539         case NL80211_CMD_REG_BEACON_HINT:
2540                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
2541                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2542                                      NULL);
2543                 break;
2544         case NL80211_CMD_NEW_STATION:
2545                 nl80211_new_station_event(drv, tb);
2546                 break;
2547         case NL80211_CMD_DEL_STATION:
2548                 nl80211_del_station_event(drv, tb);
2549                 break;
2550         case NL80211_CMD_SET_REKEY_OFFLOAD:
2551                 nl80211_rekey_offload_event(drv, tb);
2552                 break;
2553         case NL80211_CMD_PMKSA_CANDIDATE:
2554                 nl80211_pmksa_candidate_event(drv, tb);
2555                 break;
2556         case NL80211_CMD_PROBE_CLIENT:
2557                 nl80211_client_probe_event(drv, tb);
2558                 break;
2559         case NL80211_CMD_TDLS_OPER:
2560                 nl80211_tdls_oper_event(drv, tb);
2561                 break;
2562         case NL80211_CMD_CONN_FAILED:
2563                 nl80211_connect_failed_event(drv, tb);
2564                 break;
2565         case NL80211_CMD_FT_EVENT:
2566                 mlme_event_ft_event(drv, tb);
2567                 break;
2568         case NL80211_CMD_RADAR_DETECT:
2569                 nl80211_radar_event(drv, tb);
2570                 break;
2571         default:
2572                 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event "
2573                         "(cmd=%d)", cmd);
2574                 break;
2575         }
2576 }
2577
2578
2579 static int process_drv_event(struct nl_msg *msg, void *arg)
2580 {
2581         struct wpa_driver_nl80211_data *drv = arg;
2582         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2583         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2584         struct i802_bss *bss;
2585         int ifidx = -1;
2586
2587         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2588                   genlmsg_attrlen(gnlh, 0), NULL);
2589
2590         if (tb[NL80211_ATTR_IFINDEX])
2591                 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2592
2593         for (bss = &drv->first_bss; bss; bss = bss->next) {
2594                 if (ifidx == -1 || ifidx == bss->ifindex) {
2595                         do_process_drv_event(bss, gnlh->cmd, tb);
2596                         return NL_SKIP;
2597                 }
2598         }
2599
2600         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d) for foreign "
2601                    "interface (ifindex %d)", gnlh->cmd, ifidx);
2602
2603         return NL_SKIP;
2604 }
2605
2606
2607 static int process_global_event(struct nl_msg *msg, void *arg)
2608 {
2609         struct nl80211_global *global = arg;
2610         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2611         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2612         struct wpa_driver_nl80211_data *drv, *tmp;
2613         int ifidx = -1;
2614         struct i802_bss *bss;
2615
2616         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2617                   genlmsg_attrlen(gnlh, 0), NULL);
2618
2619         if (tb[NL80211_ATTR_IFINDEX])
2620                 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2621
2622         dl_list_for_each_safe(drv, tmp, &global->interfaces,
2623                               struct wpa_driver_nl80211_data, list) {
2624                 for (bss = &drv->first_bss; bss; bss = bss->next) {
2625                         if (ifidx == -1 || ifidx == bss->ifindex) {
2626                                 do_process_drv_event(bss, gnlh->cmd, tb);
2627                                 return NL_SKIP;
2628                         }
2629                 }
2630         }
2631
2632         return NL_SKIP;
2633 }
2634
2635
2636 static int process_bss_event(struct nl_msg *msg, void *arg)
2637 {
2638         struct i802_bss *bss = arg;
2639         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2640         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2641
2642         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2643                   genlmsg_attrlen(gnlh, 0), NULL);
2644
2645         wpa_printf(MSG_DEBUG, "nl80211: BSS Event %d (%s) received for %s",
2646                    gnlh->cmd, nl80211_command_to_string(gnlh->cmd),
2647                    bss->ifname);
2648
2649         switch (gnlh->cmd) {
2650         case NL80211_CMD_FRAME:
2651         case NL80211_CMD_FRAME_TX_STATUS:
2652                 mlme_event(bss, gnlh->cmd, tb[NL80211_ATTR_FRAME],
2653                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2654                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2655                            tb[NL80211_ATTR_COOKIE],
2656                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2657                 break;
2658         case NL80211_CMD_UNEXPECTED_FRAME:
2659                 nl80211_spurious_frame(bss, tb, 0);
2660                 break;
2661         case NL80211_CMD_UNEXPECTED_4ADDR_FRAME:
2662                 nl80211_spurious_frame(bss, tb, 1);
2663                 break;
2664         default:
2665                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2666                            "(cmd=%d)", gnlh->cmd);
2667                 break;
2668         }
2669
2670         return NL_SKIP;
2671 }
2672
2673
2674 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
2675                                              void *handle)
2676 {
2677         struct nl_cb *cb = eloop_ctx;
2678
2679         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
2680
2681         nl_recvmsgs(handle, cb);
2682 }
2683
2684
2685 /**
2686  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
2687  * @priv: driver_nl80211 private data
2688  * @alpha2_arg: country to which to switch to
2689  * Returns: 0 on success, -1 on failure
2690  *
2691  * This asks nl80211 to set the regulatory domain for given
2692  * country ISO / IEC alpha2.
2693  */
2694 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
2695 {
2696         struct i802_bss *bss = priv;
2697         struct wpa_driver_nl80211_data *drv = bss->drv;
2698         char alpha2[3];
2699         struct nl_msg *msg;
2700
2701         msg = nlmsg_alloc();
2702         if (!msg)
2703                 return -ENOMEM;
2704
2705         alpha2[0] = alpha2_arg[0];
2706         alpha2[1] = alpha2_arg[1];
2707         alpha2[2] = '\0';
2708
2709         nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
2710
2711         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
2712         if (send_and_recv_msgs(drv, msg, NULL, NULL))
2713                 return -EINVAL;
2714         return 0;
2715 nla_put_failure:
2716         nlmsg_free(msg);
2717         return -EINVAL;
2718 }
2719
2720
2721 static int protocol_feature_handler(struct nl_msg *msg, void *arg)
2722 {
2723         u32 *feat = arg;
2724         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2725         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2726
2727         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2728                   genlmsg_attrlen(gnlh, 0), NULL);
2729
2730         if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES])
2731                 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]);
2732
2733         return NL_SKIP;
2734 }
2735
2736
2737 static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv)
2738 {
2739         u32 feat = 0;
2740         struct nl_msg *msg;
2741
2742         msg = nlmsg_alloc();
2743         if (!msg)
2744                 goto nla_put_failure;
2745
2746         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES);
2747         if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0)
2748                 return feat;
2749
2750         msg = NULL;
2751 nla_put_failure:
2752         nlmsg_free(msg);
2753         return 0;
2754 }
2755
2756
2757 struct wiphy_info_data {
2758         struct wpa_driver_nl80211_data *drv;
2759         struct wpa_driver_capa *capa;
2760
2761         unsigned int error:1;
2762         unsigned int device_ap_sme:1;
2763         unsigned int poll_command_supported:1;
2764         unsigned int data_tx_status:1;
2765         unsigned int monitor_supported:1;
2766         unsigned int auth_supported:1;
2767         unsigned int connect_supported:1;
2768         unsigned int p2p_go_supported:1;
2769         unsigned int p2p_client_supported:1;
2770         unsigned int p2p_concurrent:1;
2771         unsigned int p2p_multichan_concurrent:1;
2772 };
2773
2774
2775 static unsigned int probe_resp_offload_support(int supp_protocols)
2776 {
2777         unsigned int prot = 0;
2778
2779         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
2780                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
2781         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
2782                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
2783         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
2784                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
2785         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
2786                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
2787
2788         return prot;
2789 }
2790
2791
2792 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
2793                                          struct nlattr *tb)
2794 {
2795         struct nlattr *nl_mode;
2796         int i;
2797
2798         if (tb == NULL)
2799                 return;
2800
2801         nla_for_each_nested(nl_mode, tb, i) {
2802                 switch (nla_type(nl_mode)) {
2803                 case NL80211_IFTYPE_AP:
2804                         info->capa->flags |= WPA_DRIVER_FLAGS_AP;
2805                         break;
2806                 case NL80211_IFTYPE_ADHOC:
2807                         info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
2808                         break;
2809                 case NL80211_IFTYPE_P2P_GO:
2810                         info->p2p_go_supported = 1;
2811                         break;
2812                 case NL80211_IFTYPE_P2P_CLIENT:
2813                         info->p2p_client_supported = 1;
2814                         break;
2815                 case NL80211_IFTYPE_MONITOR:
2816                         info->monitor_supported = 1;
2817                         break;
2818                 }
2819         }
2820 }
2821
2822
2823 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
2824                                          struct nlattr *nl_combi)
2825 {
2826         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
2827         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
2828         struct nlattr *nl_limit, *nl_mode;
2829         int err, rem_limit, rem_mode;
2830         int combination_has_p2p = 0, combination_has_mgd = 0;
2831         static struct nla_policy
2832         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2833                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2834                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2835                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
2836                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
2837                 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
2838         },
2839         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2840                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2841                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2842         };
2843
2844         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
2845                                nl_combi, iface_combination_policy);
2846         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
2847             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
2848             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
2849                 return 0; /* broken combination */
2850
2851         if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
2852                 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
2853
2854         nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
2855                             rem_limit) {
2856                 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
2857                                        nl_limit, iface_limit_policy);
2858                 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
2859                         return 0; /* broken combination */
2860
2861                 nla_for_each_nested(nl_mode,
2862                                     tb_limit[NL80211_IFACE_LIMIT_TYPES],
2863                                     rem_mode) {
2864                         int ift = nla_type(nl_mode);
2865                         if (ift == NL80211_IFTYPE_P2P_GO ||
2866                             ift == NL80211_IFTYPE_P2P_CLIENT)
2867                                 combination_has_p2p = 1;
2868                         if (ift == NL80211_IFTYPE_STATION)
2869                                 combination_has_mgd = 1;
2870                 }
2871                 if (combination_has_p2p && combination_has_mgd)
2872                         break;
2873         }
2874
2875         if (combination_has_p2p && combination_has_mgd) {
2876                 info->p2p_concurrent = 1;
2877                 if (nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) > 1)
2878                         info->p2p_multichan_concurrent = 1;
2879                 return 1;
2880         }
2881
2882         return 0;
2883 }
2884
2885
2886 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
2887                                   struct nlattr *tb)
2888 {
2889         struct nlattr *nl_combi;
2890         int rem_combi;
2891
2892         if (tb == NULL)
2893                 return;
2894
2895         nla_for_each_nested(nl_combi, tb, rem_combi) {
2896                 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
2897                         break;
2898         }
2899 }
2900
2901
2902 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
2903                                  struct nlattr *tb)
2904 {
2905         struct nlattr *nl_cmd;
2906         int i;
2907
2908         if (tb == NULL)
2909                 return;
2910
2911         nla_for_each_nested(nl_cmd, tb, i) {
2912                 switch (nla_get_u32(nl_cmd)) {
2913                 case NL80211_CMD_AUTHENTICATE:
2914                         info->auth_supported = 1;
2915                         break;
2916                 case NL80211_CMD_CONNECT:
2917                         info->connect_supported = 1;
2918                         break;
2919                 case NL80211_CMD_START_SCHED_SCAN:
2920                         info->capa->sched_scan_supported = 1;
2921                         break;
2922                 case NL80211_CMD_PROBE_CLIENT:
2923                         info->poll_command_supported = 1;
2924                         break;
2925                 }
2926         }
2927 }
2928
2929
2930 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
2931                                struct nlattr *tb)
2932 {
2933         if (tb)
2934                 capa->max_remain_on_chan = nla_get_u32(tb);
2935 }
2936
2937
2938 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
2939                             struct nlattr *ext_setup)
2940 {
2941         if (tdls == NULL)
2942                 return;
2943
2944         wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2945         capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2946
2947         if (ext_setup) {
2948                 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2949                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2950         }
2951 }
2952
2953
2954 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
2955                                      struct nlattr *tb)
2956 {
2957         u32 flags;
2958         struct wpa_driver_capa *capa = info->capa;
2959
2960         if (tb == NULL)
2961                 return;
2962
2963         flags = nla_get_u32(tb);
2964
2965         if (flags & NL80211_FEATURE_SK_TX_STATUS)
2966                 info->data_tx_status = 1;
2967
2968         if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
2969                 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
2970
2971         if (flags & NL80211_FEATURE_SAE)
2972                 capa->flags |= WPA_DRIVER_FLAGS_SAE;
2973
2974         if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
2975                 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
2976 }
2977
2978
2979 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
2980                                           struct nlattr *tb)
2981 {
2982         u32 protocols;
2983
2984         if (tb == NULL)
2985                 return;
2986
2987         protocols = nla_get_u32(tb);
2988         wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
2989                    "mode");
2990         capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
2991         capa->probe_resp_offloads = probe_resp_offload_support(protocols);
2992 }
2993
2994
2995 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
2996 {
2997         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2998         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2999         struct wiphy_info_data *info = arg;
3000         struct wpa_driver_capa *capa = info->capa;
3001         struct wpa_driver_nl80211_data *drv = info->drv;
3002
3003         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3004                   genlmsg_attrlen(gnlh, 0), NULL);
3005
3006         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
3007                 capa->max_scan_ssids =
3008                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
3009
3010         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
3011                 capa->max_sched_scan_ssids =
3012                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
3013
3014         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
3015                 capa->max_match_sets =
3016                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
3017
3018         if (tb[NL80211_ATTR_MAC_ACL_MAX])
3019                 capa->max_acl_mac_addrs =
3020                         nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
3021
3022         wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
3023         wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
3024         wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
3025
3026         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
3027                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
3028                            "off-channel TX");
3029                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
3030         }
3031
3032         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
3033                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
3034                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
3035         }
3036
3037         wiphy_info_max_roc(capa,
3038                            tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
3039
3040         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
3041                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
3042
3043         wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
3044                         tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
3045
3046         if (tb[NL80211_ATTR_DEVICE_AP_SME])
3047                 info->device_ap_sme = 1;
3048
3049         wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
3050         wiphy_info_probe_resp_offload(capa,
3051                                       tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
3052
3053         if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
3054             drv->extended_capa == NULL) {
3055                 drv->extended_capa =
3056                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3057                 if (drv->extended_capa) {
3058                         os_memcpy(drv->extended_capa,
3059                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
3060                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3061                         drv->extended_capa_len =
3062                                 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
3063                 }
3064                 drv->extended_capa_mask =
3065                         os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3066                 if (drv->extended_capa_mask) {
3067                         os_memcpy(drv->extended_capa_mask,
3068                                   nla_data(tb[NL80211_ATTR_EXT_CAPA]),
3069                                   nla_len(tb[NL80211_ATTR_EXT_CAPA]));
3070                 } else {
3071                         os_free(drv->extended_capa);
3072                         drv->extended_capa = NULL;
3073                         drv->extended_capa_len = 0;
3074                 }
3075         }
3076
3077         return NL_SKIP;
3078 }
3079
3080
3081 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
3082                                        struct wiphy_info_data *info)
3083 {
3084         u32 feat;
3085         struct nl_msg *msg;
3086
3087         os_memset(info, 0, sizeof(*info));
3088         info->capa = &drv->capa;
3089         info->drv = drv;
3090
3091         msg = nlmsg_alloc();
3092         if (!msg)
3093                 return -1;
3094
3095         feat = get_nl80211_protocol_features(drv);
3096         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
3097                 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY);
3098         else
3099                 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
3100
3101         NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
3102         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
3103
3104         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
3105                 return -1;
3106
3107         if (info->auth_supported)
3108                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
3109         else if (!info->connect_supported) {
3110                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
3111                            "authentication/association or connect commands");
3112                 info->error = 1;
3113         }
3114
3115         if (info->p2p_go_supported && info->p2p_client_supported)
3116                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
3117         if (info->p2p_concurrent) {
3118                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
3119                            "interface (driver advertised support)");
3120                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
3121                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
3122         }
3123         if (info->p2p_multichan_concurrent) {
3124                 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
3125                            "concurrent (driver advertised support)");
3126                 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT;
3127         }
3128
3129         /* default to 5000 since early versions of mac80211 don't set it */
3130         if (!drv->capa.max_remain_on_chan)
3131                 drv->capa.max_remain_on_chan = 5000;
3132
3133         return 0;
3134 nla_put_failure:
3135         nlmsg_free(msg);
3136         return -1;
3137 }
3138
3139
3140 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
3141 {
3142         struct wiphy_info_data info;
3143         if (wpa_driver_nl80211_get_info(drv, &info))
3144                 return -1;
3145
3146         if (info.error)
3147                 return -1;
3148
3149         drv->has_capability = 1;
3150         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
3151         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
3152                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
3153                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
3154                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
3155         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
3156                 WPA_DRIVER_CAPA_ENC_WEP104 |
3157                 WPA_DRIVER_CAPA_ENC_TKIP |
3158                 WPA_DRIVER_CAPA_ENC_CCMP;
3159         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
3160                 WPA_DRIVER_AUTH_SHARED |
3161                 WPA_DRIVER_AUTH_LEAP;
3162
3163         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
3164         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
3165         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3166
3167         if (!info.device_ap_sme) {
3168                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
3169
3170                 /*
3171                  * No AP SME is currently assumed to also indicate no AP MLME
3172                  * in the driver/firmware.
3173                  */
3174                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
3175         }
3176
3177         drv->device_ap_sme = info.device_ap_sme;
3178         drv->poll_command_supported = info.poll_command_supported;
3179         drv->data_tx_status = info.data_tx_status;
3180
3181         /*
3182          * If poll command and tx status are supported, mac80211 is new enough
3183          * to have everything we need to not need monitor interfaces.
3184          */
3185         drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
3186
3187         if (drv->device_ap_sme && drv->use_monitor) {
3188                 /*
3189                  * Non-mac80211 drivers may not support monitor interface.
3190                  * Make sure we do not get stuck with incorrect capability here
3191                  * by explicitly testing this.
3192                  */
3193                 if (!info.monitor_supported) {
3194                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
3195                                    "with device_ap_sme since no monitor mode "
3196                                    "support detected");
3197                         drv->use_monitor = 0;
3198                 }
3199         }
3200
3201         /*
3202          * If we aren't going to use monitor interfaces, but the
3203          * driver doesn't support data TX status, we won't get TX
3204          * status for EAPOL frames.
3205          */
3206         if (!drv->use_monitor && !info.data_tx_status)
3207                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3208
3209         return 0;
3210 }
3211
3212
3213 #ifdef ANDROID
3214 static int android_genl_ctrl_resolve(struct nl_handle *handle,
3215                                      const char *name)
3216 {
3217         /*
3218          * Android ICS has very minimal genl_ctrl_resolve() implementation, so
3219          * need to work around that.
3220          */
3221         struct nl_cache *cache = NULL;
3222         struct genl_family *nl80211 = NULL;
3223         int id = -1;
3224
3225         if (genl_ctrl_alloc_cache(handle, &cache) < 0) {
3226                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
3227                            "netlink cache");
3228                 goto fail;
3229         }
3230
3231         nl80211 = genl_ctrl_search_by_name(cache, name);
3232         if (nl80211 == NULL)
3233                 goto fail;
3234
3235         id = genl_family_get_id(nl80211);
3236
3237 fail:
3238         if (nl80211)
3239                 genl_family_put(nl80211);
3240         if (cache)
3241                 nl_cache_free(cache);
3242
3243         return id;
3244 }
3245 #define genl_ctrl_resolve android_genl_ctrl_resolve
3246 #endif /* ANDROID */
3247
3248
3249 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
3250 {
3251         int ret;
3252
3253         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
3254         if (global->nl_cb == NULL) {
3255                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
3256                            "callbacks");
3257                 return -1;
3258         }
3259
3260         global->nl = nl_create_handle(global->nl_cb, "nl");
3261         if (global->nl == NULL)
3262                 goto err;
3263
3264         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
3265         if (global->nl80211_id < 0) {
3266                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
3267                            "found");
3268                 goto err;
3269         }
3270
3271         global->nl_event = nl_create_handle(global->nl_cb, "event");
3272         if (global->nl_event == NULL)
3273                 goto err;
3274
3275         ret = nl_get_multicast_id(global, "nl80211", "scan");
3276         if (ret >= 0)
3277                 ret = nl_socket_add_membership(global->nl_event, ret);
3278         if (ret < 0) {
3279                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
3280                            "membership for scan events: %d (%s)",
3281                            ret, strerror(-ret));
3282                 goto err;
3283         }
3284
3285         ret = nl_get_multicast_id(global, "nl80211", "mlme");
3286         if (ret >= 0)
3287                 ret = nl_socket_add_membership(global->nl_event, ret);
3288         if (ret < 0) {
3289                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
3290                            "membership for mlme events: %d (%s)",
3291                            ret, strerror(-ret));
3292                 goto err;
3293         }
3294
3295         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
3296         if (ret >= 0)
3297                 ret = nl_socket_add_membership(global->nl_event, ret);
3298         if (ret < 0) {
3299                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
3300                            "membership for regulatory events: %d (%s)",
3301                            ret, strerror(-ret));
3302                 /* Continue without regulatory events */
3303         }
3304
3305         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
3306                   no_seq_check, NULL);
3307         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
3308                   process_global_event, global);
3309
3310         eloop_register_read_sock(nl_socket_get_fd(global->nl_event),
3311                                  wpa_driver_nl80211_event_receive,
3312                                  global->nl_cb, global->nl_event);
3313
3314         return 0;
3315
3316 err:
3317         nl_destroy_handles(&global->nl_event);
3318         nl_destroy_handles(&global->nl);
3319         nl_cb_put(global->nl_cb);
3320         global->nl_cb = NULL;
3321         return -1;
3322 }
3323
3324
3325 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
3326 {
3327         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
3328         if (!drv->nl_cb) {
3329                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
3330                 return -1;
3331         }
3332
3333         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
3334                   no_seq_check, NULL);
3335         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
3336                   process_drv_event, drv);
3337
3338         return 0;
3339 }
3340
3341
3342 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
3343 {
3344         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
3345         /*
3346          * This may be for any interface; use ifdown event to disable
3347          * interface.
3348          */
3349 }
3350
3351
3352 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
3353 {
3354         struct wpa_driver_nl80211_data *drv = ctx;
3355         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
3356         if (linux_set_iface_flags(drv->global->ioctl_sock,
3357                                   drv->first_bss.ifname, 1)) {
3358                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
3359                            "after rfkill unblock");
3360                 return;
3361         }
3362         /* rtnetlink ifup handler will report interface as enabled */
3363 }
3364
3365
3366 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
3367 {
3368         /* Find phy (radio) to which this interface belongs */
3369         char buf[90], *pos;
3370         int f, rv;
3371
3372         drv->phyname[0] = '\0';
3373         snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
3374                  drv->first_bss.ifname);
3375         f = open(buf, O_RDONLY);
3376         if (f < 0) {
3377                 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
3378                            buf, strerror(errno));
3379                 return;
3380         }
3381
3382         rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
3383         close(f);
3384         if (rv < 0) {
3385                 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
3386                            buf, strerror(errno));
3387                 return;
3388         }
3389
3390         drv->phyname[rv] = '\0';
3391         pos = os_strchr(drv->phyname, '\n');
3392         if (pos)
3393                 *pos = '\0';
3394         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
3395                    drv->first_bss.ifname, drv->phyname);
3396 }
3397
3398
3399 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
3400                                                       void *eloop_ctx,
3401                                                       void *handle)
3402 {
3403         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3404         u8 data[2048];
3405         struct msghdr msg;
3406         struct iovec entry;
3407         u8 control[512];
3408         struct cmsghdr *cmsg;
3409         int res, found_ee = 0, found_wifi = 0, acked = 0;
3410         union wpa_event_data event;
3411
3412         memset(&msg, 0, sizeof(msg));
3413         msg.msg_iov = &entry;
3414         msg.msg_iovlen = 1;
3415         entry.iov_base = data;
3416         entry.iov_len = sizeof(data);
3417         msg.msg_control = &control;
3418         msg.msg_controllen = sizeof(control);
3419
3420         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
3421         /* if error or not fitting 802.3 header, return */
3422         if (res < 14)
3423                 return;
3424
3425         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
3426         {
3427                 if (cmsg->cmsg_level == SOL_SOCKET &&
3428                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
3429                         int *ack;
3430
3431                         found_wifi = 1;
3432                         ack = (void *)CMSG_DATA(cmsg);
3433                         acked = *ack;
3434                 }
3435
3436                 if (cmsg->cmsg_level == SOL_PACKET &&
3437                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
3438                         struct sock_extended_err *err =
3439                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
3440
3441                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
3442                                 found_ee = 1;
3443                 }
3444         }
3445
3446         if (!found_ee || !found_wifi)
3447                 return;
3448
3449         memset(&event, 0, sizeof(event));
3450         event.eapol_tx_status.dst = data;
3451         event.eapol_tx_status.data = data + 14;
3452         event.eapol_tx_status.data_len = res - 14;
3453         event.eapol_tx_status.ack = acked;
3454         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
3455 }
3456
3457
3458 static int nl80211_init_bss(struct i802_bss *bss)
3459 {
3460         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
3461         if (!bss->nl_cb)
3462                 return -1;
3463
3464         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
3465                   no_seq_check, NULL);
3466         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
3467                   process_bss_event, bss);
3468
3469         return 0;
3470 }
3471
3472
3473 static void nl80211_destroy_bss(struct i802_bss *bss)
3474 {
3475         nl_cb_put(bss->nl_cb);
3476         bss->nl_cb = NULL;
3477 }
3478
3479
3480 /**
3481  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
3482  * @ctx: context to be used when calling wpa_supplicant functions,
3483  * e.g., wpa_supplicant_event()
3484  * @ifname: interface name, e.g., wlan0
3485  * @global_priv: private driver global data from global_init()
3486  * Returns: Pointer to private data, %NULL on failure
3487  */
3488 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
3489                                       void *global_priv)
3490 {
3491         struct wpa_driver_nl80211_data *drv;
3492         struct rfkill_config *rcfg;
3493         struct i802_bss *bss;
3494
3495         if (global_priv == NULL)
3496                 return NULL;
3497         drv = os_zalloc(sizeof(*drv));
3498         if (drv == NULL)
3499                 return NULL;
3500         drv->global = global_priv;
3501         drv->ctx = ctx;
3502         bss = &drv->first_bss;
3503         bss->drv = drv;
3504         bss->ctx = ctx;
3505
3506         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
3507         drv->monitor_ifidx = -1;
3508         drv->monitor_sock = -1;
3509         drv->eapol_tx_sock = -1;
3510         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
3511
3512         if (wpa_driver_nl80211_init_nl(drv)) {
3513                 os_free(drv);
3514                 return NULL;
3515         }
3516
3517         if (nl80211_init_bss(bss))
3518                 goto failed;
3519
3520         nl80211_get_phy_name(drv);
3521
3522         rcfg = os_zalloc(sizeof(*rcfg));
3523         if (rcfg == NULL)
3524                 goto failed;
3525         rcfg->ctx = drv;
3526         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
3527         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
3528         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
3529         drv->rfkill = rfkill_init(rcfg);
3530         if (drv->rfkill == NULL) {
3531                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
3532                 os_free(rcfg);
3533         }
3534
3535         if (wpa_driver_nl80211_finish_drv_init(drv))
3536                 goto failed;
3537
3538         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
3539         if (drv->eapol_tx_sock < 0)
3540                 goto failed;
3541
3542         if (drv->data_tx_status) {
3543                 int enabled = 1;
3544
3545                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
3546                                &enabled, sizeof(enabled)) < 0) {
3547                         wpa_printf(MSG_DEBUG,
3548                                 "nl80211: wifi status sockopt failed\n");
3549                         drv->data_tx_status = 0;
3550                         if (!drv->use_monitor)
3551                                 drv->capa.flags &=
3552                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3553                 } else {
3554                         eloop_register_read_sock(drv->eapol_tx_sock,
3555                                 wpa_driver_nl80211_handle_eapol_tx_status,
3556                                 drv, NULL);
3557                 }
3558         }
3559
3560         if (drv->global) {
3561                 dl_list_add(&drv->global->interfaces, &drv->list);
3562                 drv->in_interface_list = 1;
3563         }
3564
3565         return bss;
3566
3567 failed:
3568         wpa_driver_nl80211_deinit(bss);
3569         return NULL;
3570 }
3571
3572
3573 static int nl80211_register_frame(struct i802_bss *bss,
3574                                   struct nl_handle *nl_handle,
3575                                   u16 type, const u8 *match, size_t match_len)
3576 {
3577         struct wpa_driver_nl80211_data *drv = bss->drv;
3578         struct nl_msg *msg;
3579         int ret = -1;
3580
3581         msg = nlmsg_alloc();
3582         if (!msg)
3583                 return -1;
3584
3585         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p",
3586                    type, nl_handle);
3587         wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3588                     match, match_len);
3589
3590         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
3591
3592         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3593         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
3594         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
3595
3596         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
3597         msg = NULL;
3598         if (ret) {
3599                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
3600                            "failed (type=%u): ret=%d (%s)",
3601                            type, ret, strerror(-ret));
3602                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3603                             match, match_len);
3604                 goto nla_put_failure;
3605         }
3606         ret = 0;
3607 nla_put_failure:
3608         nlmsg_free(msg);
3609         return ret;
3610 }
3611
3612
3613 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
3614 {
3615         struct wpa_driver_nl80211_data *drv = bss->drv;
3616
3617         if (bss->nl_mgmt) {
3618                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
3619                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
3620                 return -1;
3621         }
3622
3623         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
3624         if (bss->nl_mgmt == NULL)
3625                 return -1;
3626
3627         eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt),
3628                                  wpa_driver_nl80211_event_receive, bss->nl_cb,
3629                                  bss->nl_mgmt);
3630
3631         return 0;
3632 }
3633
3634
3635 static int nl80211_register_action_frame(struct i802_bss *bss,
3636                                          const u8 *match, size_t match_len)
3637 {
3638         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
3639         return nl80211_register_frame(bss, bss->nl_mgmt,
3640                                       type, match, match_len);
3641 }
3642
3643
3644 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
3645 {
3646         struct wpa_driver_nl80211_data *drv = bss->drv;
3647
3648         if (nl80211_alloc_mgmt_handle(bss))
3649                 return -1;
3650         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
3651                    "handle %p", bss->nl_mgmt);
3652
3653 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
3654         /* GAS Initial Request */
3655         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
3656                 return -1;
3657         /* GAS Initial Response */
3658         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
3659                 return -1;
3660         /* GAS Comeback Request */
3661         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
3662                 return -1;
3663         /* GAS Comeback Response */
3664         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
3665                 return -1;
3666 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
3667 #ifdef CONFIG_P2P
3668         /* P2P Public Action */
3669         if (nl80211_register_action_frame(bss,
3670                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
3671                                           6) < 0)
3672                 return -1;
3673         /* P2P Action */
3674         if (nl80211_register_action_frame(bss,
3675                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
3676                                           5) < 0)
3677                 return -1;
3678 #endif /* CONFIG_P2P */
3679 #ifdef CONFIG_IEEE80211W
3680         /* SA Query Response */
3681         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
3682                 return -1;
3683 #endif /* CONFIG_IEEE80211W */
3684 #ifdef CONFIG_TDLS
3685         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
3686                 /* TDLS Discovery Response */
3687                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
3688                     0)
3689                         return -1;
3690         }
3691 #endif /* CONFIG_TDLS */
3692
3693         /* FT Action frames */
3694         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
3695                 return -1;
3696         else
3697                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
3698                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
3699
3700         /* WNM - BSS Transition Management Request */
3701         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
3702                 return -1;
3703         /* WNM-Sleep Mode Response */
3704         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
3705                 return -1;
3706
3707         return 0;
3708 }
3709
3710
3711 static int nl80211_register_spurious_class3(struct i802_bss *bss)
3712 {
3713         struct wpa_driver_nl80211_data *drv = bss->drv;
3714         struct nl_msg *msg;
3715         int ret = -1;
3716
3717         msg = nlmsg_alloc();
3718         if (!msg)
3719                 return -1;
3720
3721         nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
3722
3723         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3724
3725         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
3726         msg = NULL;
3727         if (ret) {
3728                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
3729                            "failed: ret=%d (%s)",
3730                            ret, strerror(-ret));
3731                 goto nla_put_failure;
3732         }
3733         ret = 0;
3734 nla_put_failure:
3735         nlmsg_free(msg);
3736         return ret;
3737 }
3738
3739
3740 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
3741 {
3742         static const int stypes[] = {
3743                 WLAN_FC_STYPE_AUTH,
3744                 WLAN_FC_STYPE_ASSOC_REQ,
3745                 WLAN_FC_STYPE_REASSOC_REQ,
3746                 WLAN_FC_STYPE_DISASSOC,
3747                 WLAN_FC_STYPE_DEAUTH,
3748                 WLAN_FC_STYPE_ACTION,
3749                 WLAN_FC_STYPE_PROBE_REQ,
3750 /* Beacon doesn't work as mac80211 doesn't currently allow
3751  * it, but it wouldn't really be the right thing anyway as
3752  * it isn't per interface ... maybe just dump the scan
3753  * results periodically for OLBC?
3754  */
3755 //              WLAN_FC_STYPE_BEACON,
3756         };
3757         unsigned int i;
3758
3759         if (nl80211_alloc_mgmt_handle(bss))
3760                 return -1;
3761         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3762                    "handle %p", bss->nl_mgmt);
3763
3764         for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) {
3765                 if (nl80211_register_frame(bss, bss->nl_mgmt,
3766                                            (WLAN_FC_TYPE_MGMT << 2) |
3767                                            (stypes[i] << 4),
3768                                            NULL, 0) < 0) {
3769                         goto out_err;
3770                 }
3771         }
3772
3773         if (nl80211_register_spurious_class3(bss))
3774                 goto out_err;
3775
3776         if (nl80211_get_wiphy_data_ap(bss) == NULL)
3777                 goto out_err;
3778
3779         return 0;
3780
3781 out_err:
3782         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3783         nl_destroy_handles(&bss->nl_mgmt);
3784         return -1;
3785 }
3786
3787
3788 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
3789 {
3790         if (nl80211_alloc_mgmt_handle(bss))
3791                 return -1;
3792         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3793                    "handle %p (device SME)", bss->nl_mgmt);
3794
3795         if (nl80211_register_frame(bss, bss->nl_mgmt,
3796                                    (WLAN_FC_TYPE_MGMT << 2) |
3797                                    (WLAN_FC_STYPE_ACTION << 4),
3798                                    NULL, 0) < 0)
3799                 goto out_err;
3800
3801         return 0;
3802
3803 out_err:
3804         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3805         nl_destroy_handles(&bss->nl_mgmt);
3806         return -1;
3807 }
3808
3809
3810 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
3811 {
3812         if (bss->nl_mgmt == NULL)
3813                 return;
3814         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
3815                    "(%s)", bss->nl_mgmt, reason);
3816         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3817         nl_destroy_handles(&bss->nl_mgmt);
3818
3819         nl80211_put_wiphy_data_ap(bss);
3820 }
3821
3822
3823 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
3824 {
3825         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
3826 }
3827
3828
3829 static int
3830 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
3831 {
3832         struct i802_bss *bss = &drv->first_bss;
3833         int send_rfkill_event = 0;
3834
3835         drv->ifindex = if_nametoindex(bss->ifname);
3836         drv->first_bss.ifindex = drv->ifindex;
3837
3838 #ifndef HOSTAPD
3839         /*
3840          * Make sure the interface starts up in station mode unless this is a
3841          * dynamically added interface (e.g., P2P) that was already configured
3842          * with proper iftype.
3843          */
3844         if (drv->ifindex != drv->global->if_add_ifindex &&
3845             wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
3846                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
3847                            "use managed mode");
3848                 return -1;
3849         }
3850
3851         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
3852                 if (rfkill_is_blocked(drv->rfkill)) {
3853                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
3854                                    "interface '%s' due to rfkill",
3855                                    bss->ifname);
3856                         drv->if_disabled = 1;
3857                         send_rfkill_event = 1;
3858                 } else {
3859                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
3860                                    "interface '%s' UP", bss->ifname);
3861                         return -1;
3862                 }
3863         }
3864
3865         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
3866                                1, IF_OPER_DORMANT);
3867 #endif /* HOSTAPD */
3868
3869         if (wpa_driver_nl80211_capa(drv))
3870                 return -1;
3871
3872         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
3873                                bss->addr))
3874                 return -1;
3875
3876         if (send_rfkill_event) {
3877                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
3878                                        drv, drv->ctx);
3879         }
3880
3881         return 0;
3882 }
3883
3884
3885 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
3886 {
3887         struct nl_msg *msg;
3888
3889         msg = nlmsg_alloc();
3890         if (!msg)
3891                 return -ENOMEM;
3892
3893         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
3894         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3895
3896         return send_and_recv_msgs(drv, msg, NULL, NULL);
3897  nla_put_failure:
3898         nlmsg_free(msg);
3899         return -ENOBUFS;
3900 }
3901
3902
3903 /**
3904  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
3905  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3906  *
3907  * Shut down driver interface and processing of driver events. Free
3908  * private data buffer if one was allocated in wpa_driver_nl80211_init().
3909  */
3910 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
3911 {
3912         struct wpa_driver_nl80211_data *drv = bss->drv;
3913
3914         bss->in_deinit = 1;
3915         if (drv->data_tx_status)
3916                 eloop_unregister_read_sock(drv->eapol_tx_sock);
3917         if (drv->eapol_tx_sock >= 0)
3918                 close(drv->eapol_tx_sock);
3919
3920         if (bss->nl_preq)
3921                 wpa_driver_nl80211_probe_req_report(bss, 0);
3922         if (bss->added_if_into_bridge) {
3923                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
3924                                     bss->ifname) < 0)
3925                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3926                                    "interface %s from bridge %s: %s",
3927                                    bss->ifname, bss->brname, strerror(errno));
3928         }
3929         if (bss->added_bridge) {
3930                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
3931                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3932                                    "bridge %s: %s",
3933                                    bss->brname, strerror(errno));
3934         }
3935
3936         nl80211_remove_monitor_interface(drv);
3937
3938         if (is_ap_interface(drv->nlmode))
3939                 wpa_driver_nl80211_del_beacon(drv);
3940
3941 #ifdef HOSTAPD
3942         if (drv->last_freq_ht) {
3943                 /* Clear HT flags from the driver */
3944                 struct hostapd_freq_params freq;
3945                 os_memset(&freq, 0, sizeof(freq));
3946                 freq.freq = drv->last_freq;
3947                 wpa_driver_nl80211_set_freq(bss, &freq);
3948         }
3949
3950         if (drv->eapol_sock >= 0) {
3951                 eloop_unregister_read_sock(drv->eapol_sock);
3952                 close(drv->eapol_sock);
3953         }
3954
3955         if (drv->if_indices != drv->default_if_indices)
3956                 os_free(drv->if_indices);
3957 #endif /* HOSTAPD */
3958
3959         if (drv->disabled_11b_rates)
3960                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3961
3962         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
3963                                IF_OPER_UP);
3964         rfkill_deinit(drv->rfkill);
3965
3966         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3967
3968         (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
3969         wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
3970         nl80211_mgmt_unsubscribe(bss, "deinit");
3971
3972         nl_cb_put(drv->nl_cb);
3973
3974         nl80211_destroy_bss(&drv->first_bss);
3975
3976         os_free(drv->filter_ssids);
3977
3978         os_free(drv->auth_ie);
3979
3980         if (drv->in_interface_list)
3981                 dl_list_del(&drv->list);
3982
3983         os_free(drv->extended_capa);
3984         os_free(drv->extended_capa_mask);
3985         os_free(drv);
3986 }
3987
3988
3989 /**
3990  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
3991  * @eloop_ctx: Driver private data
3992  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
3993  *
3994  * This function can be used as registered timeout when starting a scan to
3995  * generate a scan completed event if the driver does not report this.
3996  */
3997 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
3998 {
3999         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4000         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
4001                 wpa_driver_nl80211_set_mode(&drv->first_bss,
4002                                             drv->ap_scan_as_station);
4003                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
4004         }
4005         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
4006         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
4007 }
4008
4009
4010 static struct nl_msg *
4011 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
4012                     struct wpa_driver_scan_params *params)
4013 {
4014         struct nl_msg *msg;
4015         size_t i;
4016
4017         msg = nlmsg_alloc();
4018         if (!msg)
4019                 return NULL;
4020
4021         nl80211_cmd(drv, msg, 0, cmd);
4022
4023         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0)
4024                 goto fail;
4025
4026         if (params->num_ssids) {
4027                 struct nlattr *ssids;
4028
4029                 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
4030                 if (ssids == NULL)
4031                         goto fail;
4032                 for (i = 0; i < params->num_ssids; i++) {
4033                         wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
4034                                           params->ssids[i].ssid,
4035                                           params->ssids[i].ssid_len);
4036                         if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
4037                                     params->ssids[i].ssid) < 0)
4038                                 goto fail;
4039                 }
4040                 nla_nest_end(msg, ssids);
4041         }
4042
4043         if (params->extra_ies) {
4044                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
4045                             params->extra_ies, params->extra_ies_len);
4046                 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
4047                             params->extra_ies) < 0)
4048                         goto fail;
4049         }
4050
4051         if (params->freqs) {
4052                 struct nlattr *freqs;
4053                 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
4054                 if (freqs == NULL)
4055                         goto fail;
4056                 for (i = 0; params->freqs[i]; i++) {
4057                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
4058                                    "MHz", params->freqs[i]);
4059                         if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0)
4060                                 goto fail;
4061                 }
4062                 nla_nest_end(msg, freqs);
4063         }
4064
4065         os_free(drv->filter_ssids);
4066         drv->filter_ssids = params->filter_ssids;
4067         params->filter_ssids = NULL;
4068         drv->num_filter_ssids = params->num_filter_ssids;
4069
4070         return msg;
4071
4072 fail:
4073         nlmsg_free(msg);
4074         return NULL;
4075 }
4076
4077
4078 /**
4079  * wpa_driver_nl80211_scan - Request the driver to initiate scan
4080  * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
4081  * @params: Scan parameters
4082  * Returns: 0 on success, -1 on failure
4083  */
4084 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
4085                                    struct wpa_driver_scan_params *params)
4086 {
4087         struct wpa_driver_nl80211_data *drv = bss->drv;
4088         int ret = -1, timeout;
4089         struct nl_msg *msg = NULL;
4090
4091         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
4092         drv->scan_for_auth = 0;
4093
4094         msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params);
4095         if (!msg)
4096                 return -1;
4097
4098         if (params->p2p_probe) {
4099                 struct nlattr *rates;
4100
4101                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
4102
4103                 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
4104                 if (rates == NULL)
4105                         goto nla_put_failure;
4106
4107                 /*
4108                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
4109                  * by masking out everything else apart from the OFDM rates 6,
4110                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
4111                  * rates are left enabled.
4112                  */
4113                 NLA_PUT(msg, NL80211_BAND_2GHZ, 8,
4114                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
4115                 nla_nest_end(msg, rates);
4116
4117                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
4118         }
4119
4120         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4121         msg = NULL;
4122         if (ret) {
4123                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
4124                            "(%s)", ret, strerror(-ret));
4125 #ifdef HOSTAPD
4126                 if (is_ap_interface(drv->nlmode)) {
4127                         /*
4128                          * mac80211 does not allow scan requests in AP mode, so
4129                          * try to do this in station mode.
4130                          */
4131                         if (wpa_driver_nl80211_set_mode(
4132                                     bss, NL80211_IFTYPE_STATION))
4133                                 goto nla_put_failure;
4134
4135                         if (wpa_driver_nl80211_scan(bss, params)) {
4136                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
4137                                 goto nla_put_failure;
4138                         }
4139
4140                         /* Restore AP mode when processing scan results */
4141                         drv->ap_scan_as_station = drv->nlmode;
4142                         ret = 0;
4143                 } else
4144                         goto nla_put_failure;
4145 #else /* HOSTAPD */
4146                 goto nla_put_failure;
4147 #endif /* HOSTAPD */
4148         }
4149
4150         /* Not all drivers generate "scan completed" wireless event, so try to
4151          * read results after a timeout. */
4152         timeout = 10;
4153         if (drv->scan_complete_events) {
4154                 /*
4155                  * The driver seems to deliver events to notify when scan is
4156                  * complete, so use longer timeout to avoid race conditions
4157                  * with scanning and following association request.
4158                  */
4159                 timeout = 30;
4160         }
4161         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
4162                    "seconds", ret, timeout);
4163         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
4164         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
4165                                drv, drv->ctx);
4166
4167 nla_put_failure:
4168         nlmsg_free(msg);
4169         return ret;
4170 }
4171
4172
4173 /**
4174  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
4175  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
4176  * @params: Scan parameters
4177  * @interval: Interval between scan cycles in milliseconds
4178  * Returns: 0 on success, -1 on failure or if not supported
4179  */
4180 static int wpa_driver_nl80211_sched_scan(void *priv,
4181                                          struct wpa_driver_scan_params *params,
4182                                          u32 interval)
4183 {
4184         struct i802_bss *bss = priv;
4185         struct wpa_driver_nl80211_data *drv = bss->drv;
4186         int ret = -1;
4187         struct nl_msg *msg;
4188         size_t i;
4189
4190         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
4191
4192 #ifdef ANDROID
4193         if (!drv->capa.sched_scan_supported)
4194                 return android_pno_start(bss, params);
4195 #endif /* ANDROID */
4196
4197         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params);
4198         if (!msg)
4199                 goto nla_put_failure;
4200
4201         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
4202
4203         if ((drv->num_filter_ssids &&
4204             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
4205             params->filter_rssi) {
4206                 struct nlattr *match_sets;
4207                 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
4208                 if (match_sets == NULL)
4209                         goto nla_put_failure;
4210
4211                 for (i = 0; i < drv->num_filter_ssids; i++) {
4212                         struct nlattr *match_set_ssid;
4213                         wpa_hexdump_ascii(MSG_MSGDUMP,
4214                                           "nl80211: Sched scan filter SSID",
4215                                           drv->filter_ssids[i].ssid,
4216                                           drv->filter_ssids[i].ssid_len);
4217
4218                         match_set_ssid = nla_nest_start(msg, i + 1);
4219                         if (match_set_ssid == NULL)
4220                                 goto nla_put_failure;
4221                         NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
4222                                 drv->filter_ssids[i].ssid_len,
4223                                 drv->filter_ssids[i].ssid);
4224
4225                         nla_nest_end(msg, match_set_ssid);
4226                 }
4227
4228                 if (params->filter_rssi) {
4229                         struct nlattr *match_set_rssi;
4230                         match_set_rssi = nla_nest_start(msg, 0);
4231                         if (match_set_rssi == NULL)
4232                                 goto nla_put_failure;
4233                         NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
4234                                     params->filter_rssi);
4235                         wpa_printf(MSG_MSGDUMP,
4236                                    "nl80211: Sched scan RSSI filter %d dBm",
4237                                    params->filter_rssi);
4238                         nla_nest_end(msg, match_set_rssi);
4239                 }
4240
4241                 nla_nest_end(msg, match_sets);
4242         }
4243
4244         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4245
4246         /* TODO: if we get an error here, we should fall back to normal scan */
4247
4248         msg = NULL;
4249         if (ret) {
4250                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
4251                            "ret=%d (%s)", ret, strerror(-ret));
4252                 goto nla_put_failure;
4253         }
4254
4255         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
4256                    "scan interval %d msec", ret, interval);
4257
4258 nla_put_failure:
4259         nlmsg_free(msg);
4260         return ret;
4261 }
4262
4263
4264 /**
4265  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
4266  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
4267  * Returns: 0 on success, -1 on failure or if not supported
4268  */
4269 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
4270 {
4271         struct i802_bss *bss = priv;
4272         struct wpa_driver_nl80211_data *drv = bss->drv;
4273         int ret = 0;
4274         struct nl_msg *msg;
4275
4276 #ifdef ANDROID
4277         if (!drv->capa.sched_scan_supported)
4278                 return android_pno_stop(bss);
4279 #endif /* ANDROID */
4280
4281         msg = nlmsg_alloc();
4282         if (!msg)
4283                 return -1;
4284
4285         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
4286
4287         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4288
4289         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4290         msg = NULL;
4291         if (ret) {
4292                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
4293                            "ret=%d (%s)", ret, strerror(-ret));
4294                 goto nla_put_failure;
4295         }
4296
4297         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
4298
4299 nla_put_failure:
4300         nlmsg_free(msg);
4301         return ret;
4302 }
4303
4304
4305 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
4306 {
4307         const u8 *end, *pos;
4308
4309         if (ies == NULL)
4310                 return NULL;
4311
4312         pos = ies;
4313         end = ies + ies_len;
4314
4315         while (pos + 1 < end) {
4316                 if (pos + 2 + pos[1] > end)
4317                         break;
4318                 if (pos[0] == ie)
4319                         return pos;
4320                 pos += 2 + pos[1];
4321         }
4322
4323         return NULL;
4324 }
4325
4326
4327 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
4328                                  const u8 *ie, size_t ie_len)
4329 {
4330         const u8 *ssid;
4331         size_t i;
4332
4333         if (drv->filter_ssids == NULL)
4334                 return 0;
4335
4336         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
4337         if (ssid == NULL)
4338                 return 1;
4339
4340         for (i = 0; i < drv->num_filter_ssids; i++) {
4341                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
4342                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
4343                     0)
4344                         return 0;
4345         }
4346
4347         return 1;
4348 }
4349
4350
4351 static int bss_info_handler(struct nl_msg *msg, void *arg)
4352 {
4353         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4354         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4355         struct nlattr *bss[NL80211_BSS_MAX + 1];
4356         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
4357                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
4358                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
4359                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
4360                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
4361                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
4362                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
4363                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
4364                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
4365                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
4366                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
4367                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
4368         };
4369         struct nl80211_bss_info_arg *_arg = arg;
4370         struct wpa_scan_results *res = _arg->res;
4371         struct wpa_scan_res **tmp;
4372         struct wpa_scan_res *r;
4373         const u8 *ie, *beacon_ie;
4374         size_t ie_len, beacon_ie_len;
4375         u8 *pos;
4376         size_t i;
4377
4378         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4379                   genlmsg_attrlen(gnlh, 0), NULL);
4380         if (!tb[NL80211_ATTR_BSS])
4381                 return NL_SKIP;
4382         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
4383                              bss_policy))
4384                 return NL_SKIP;
4385         if (bss[NL80211_BSS_STATUS]) {
4386                 enum nl80211_bss_status status;
4387                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
4388                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
4389                     bss[NL80211_BSS_FREQUENCY]) {
4390                         _arg->assoc_freq =
4391                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
4392                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
4393                                    _arg->assoc_freq);
4394                 }
4395                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
4396                     bss[NL80211_BSS_BSSID]) {
4397                         os_memcpy(_arg->assoc_bssid,
4398                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
4399                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
4400                                    MACSTR, MAC2STR(_arg->assoc_bssid));
4401                 }
4402         }
4403         if (!res)
4404                 return NL_SKIP;
4405         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
4406                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
4407                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
4408         } else {
4409                 ie = NULL;
4410                 ie_len = 0;
4411         }
4412         if (bss[NL80211_BSS_BEACON_IES]) {
4413                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
4414                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
4415         } else {
4416                 beacon_ie = NULL;
4417                 beacon_ie_len = 0;
4418         }
4419
4420         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
4421                                   ie ? ie_len : beacon_ie_len))
4422                 return NL_SKIP;
4423
4424         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
4425         if (r == NULL)
4426                 return NL_SKIP;
4427         if (bss[NL80211_BSS_BSSID])
4428                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
4429                           ETH_ALEN);
4430         if (bss[NL80211_BSS_FREQUENCY])
4431                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
4432         if (bss[NL80211_BSS_BEACON_INTERVAL])
4433                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
4434         if (bss[NL80211_BSS_CAPABILITY])
4435                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
4436         r->flags |= WPA_SCAN_NOISE_INVALID;
4437         if (bss[NL80211_BSS_SIGNAL_MBM]) {
4438                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
4439                 r->level /= 100; /* mBm to dBm */
4440                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
4441         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
4442                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
4443                 r->flags |= WPA_SCAN_QUAL_INVALID;
4444         } else
4445                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
4446         if (bss[NL80211_BSS_TSF])
4447                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
4448         if (bss[NL80211_BSS_SEEN_MS_AGO])
4449                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
4450         r->ie_len = ie_len;
4451         pos = (u8 *) (r + 1);
4452         if (ie) {
4453                 os_memcpy(pos, ie, ie_len);
4454                 pos += ie_len;
4455         }
4456         r->beacon_ie_len = beacon_ie_len;
4457         if (beacon_ie)
4458                 os_memcpy(pos, beacon_ie, beacon_ie_len);
4459
4460         if (bss[NL80211_BSS_STATUS]) {
4461                 enum nl80211_bss_status status;
4462                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
4463                 switch (status) {
4464                 case NL80211_BSS_STATUS_AUTHENTICATED:
4465                         r->flags |= WPA_SCAN_AUTHENTICATED;
4466                         break;
4467                 case NL80211_BSS_STATUS_ASSOCIATED:
4468                         r->flags |= WPA_SCAN_ASSOCIATED;
4469                         break;
4470                 default:
4471                         break;
4472                 }
4473         }
4474
4475         /*
4476          * cfg80211 maintains separate BSS table entries for APs if the same
4477          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
4478          * not use frequency as a separate key in the BSS table, so filter out
4479          * duplicated entries. Prefer associated BSS entry in such a case in
4480          * order to get the correct frequency into the BSS table.
4481          */
4482         for (i = 0; i < res->num; i++) {
4483                 const u8 *s1, *s2;
4484                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
4485                         continue;
4486
4487                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
4488                                     res->res[i]->ie_len, WLAN_EID_SSID);
4489                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
4490                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
4491                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
4492                         continue;
4493
4494                 /* Same BSSID,SSID was already included in scan results */
4495                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
4496                            "for " MACSTR, MAC2STR(r->bssid));
4497
4498                 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
4499                     !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
4500                         os_free(res->res[i]);
4501                         res->res[i] = r;
4502                 } else
4503                         os_free(r);
4504                 return NL_SKIP;
4505         }
4506
4507         tmp = os_realloc_array(res->res, res->num + 1,
4508                                sizeof(struct wpa_scan_res *));
4509         if (tmp == NULL) {
4510                 os_free(r);
4511                 return NL_SKIP;
4512         }
4513         tmp[res->num++] = r;
4514         res->res = tmp;
4515
4516         return NL_SKIP;
4517 }
4518
4519
4520 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
4521                                  const u8 *addr)
4522 {
4523         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
4524                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
4525                            "mismatch (" MACSTR ")", MAC2STR(addr));
4526                 wpa_driver_nl80211_mlme(drv, addr,
4527                                         NL80211_CMD_DEAUTHENTICATE,
4528                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
4529         }
4530 }
4531
4532
4533 static void wpa_driver_nl80211_check_bss_status(
4534         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
4535 {
4536         size_t i;
4537
4538         for (i = 0; i < res->num; i++) {
4539                 struct wpa_scan_res *r = res->res[i];
4540                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
4541                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4542                                    "indicates BSS status with " MACSTR
4543                                    " as authenticated",
4544                                    MAC2STR(r->bssid));
4545                         if (is_sta_interface(drv->nlmode) &&
4546                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
4547                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
4548                             0) {
4549                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
4550                                            " in local state (auth=" MACSTR
4551                                            " assoc=" MACSTR ")",
4552                                            MAC2STR(drv->auth_bssid),
4553                                            MAC2STR(drv->bssid));
4554                                 clear_state_mismatch(drv, r->bssid);
4555                         }
4556                 }
4557
4558                 if (r->flags & WPA_SCAN_ASSOCIATED) {
4559                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4560                                    "indicate BSS status with " MACSTR
4561                                    " as associated",
4562                                    MAC2STR(r->bssid));
4563                         if (is_sta_interface(drv->nlmode) &&
4564                             !drv->associated) {
4565                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4566                                            "(not associated) does not match "
4567                                            "with BSS state");
4568                                 clear_state_mismatch(drv, r->bssid);
4569                         } else if (is_sta_interface(drv->nlmode) &&
4570                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
4571                                    0) {
4572                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4573                                            "(associated with " MACSTR ") does "
4574                                            "not match with BSS state",
4575                                            MAC2STR(drv->bssid));
4576                                 clear_state_mismatch(drv, r->bssid);
4577                                 clear_state_mismatch(drv, drv->bssid);
4578                         }
4579                 }
4580         }
4581 }
4582
4583
4584 static struct wpa_scan_results *
4585 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
4586 {
4587         struct nl_msg *msg;
4588         struct wpa_scan_results *res;
4589         int ret;
4590         struct nl80211_bss_info_arg arg;
4591
4592         res = os_zalloc(sizeof(*res));
4593         if (res == NULL)
4594                 return NULL;
4595         msg = nlmsg_alloc();
4596         if (!msg)
4597                 goto nla_put_failure;
4598
4599         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
4600         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4601
4602         arg.drv = drv;
4603         arg.res = res;
4604         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
4605         msg = NULL;
4606         if (ret == 0) {
4607                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
4608                            "BSSes)", (unsigned long) res->num);
4609                 nl80211_get_noise_for_scan_results(drv, res);
4610                 return res;
4611         }
4612         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
4613                    "(%s)", ret, strerror(-ret));
4614 nla_put_failure:
4615         nlmsg_free(msg);
4616         wpa_scan_results_free(res);
4617         return NULL;
4618 }
4619
4620
4621 /**
4622  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
4623  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
4624  * Returns: Scan results on success, -1 on failure
4625  */
4626 static struct wpa_scan_results *
4627 wpa_driver_nl80211_get_scan_results(void *priv)
4628 {
4629         struct i802_bss *bss = priv;
4630         struct wpa_driver_nl80211_data *drv = bss->drv;
4631         struct wpa_scan_results *res;
4632
4633         res = nl80211_get_scan_results(drv);
4634         if (res)
4635                 wpa_driver_nl80211_check_bss_status(drv, res);
4636         return res;
4637 }
4638
4639
4640 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
4641 {
4642         struct wpa_scan_results *res;
4643         size_t i;
4644
4645         res = nl80211_get_scan_results(drv);
4646         if (res == NULL) {
4647                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
4648                 return;
4649         }
4650
4651         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
4652         for (i = 0; i < res->num; i++) {
4653                 struct wpa_scan_res *r = res->res[i];
4654                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
4655                            (int) i, (int) res->num, MAC2STR(r->bssid),
4656                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
4657                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
4658         }
4659
4660         wpa_scan_results_free(res);
4661 }
4662
4663
4664 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
4665                                       enum wpa_alg alg, const u8 *addr,
4666                                       int key_idx, int set_tx,
4667                                       const u8 *seq, size_t seq_len,
4668                                       const u8 *key, size_t key_len)
4669 {
4670         struct wpa_driver_nl80211_data *drv = bss->drv;
4671         int ifindex = if_nametoindex(ifname);
4672         struct nl_msg *msg;
4673         int ret;
4674
4675         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
4676                    "set_tx=%d seq_len=%lu key_len=%lu",
4677                    __func__, ifindex, alg, addr, key_idx, set_tx,
4678                    (unsigned long) seq_len, (unsigned long) key_len);
4679 #ifdef CONFIG_TDLS
4680         if (key_idx == -1)
4681                 key_idx = 0;
4682 #endif /* CONFIG_TDLS */
4683
4684         msg = nlmsg_alloc();
4685         if (!msg)
4686                 return -ENOMEM;
4687
4688         if (alg == WPA_ALG_NONE) {
4689                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
4690         } else {
4691                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
4692                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
4693                 switch (alg) {
4694                 case WPA_ALG_WEP:
4695                         if (key_len == 5)
4696                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4697                                             WLAN_CIPHER_SUITE_WEP40);
4698                         else
4699                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4700                                             WLAN_CIPHER_SUITE_WEP104);
4701                         break;
4702                 case WPA_ALG_TKIP:
4703                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4704                                     WLAN_CIPHER_SUITE_TKIP);
4705                         break;
4706                 case WPA_ALG_CCMP:
4707                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4708                                     WLAN_CIPHER_SUITE_CCMP);
4709                         break;
4710                 case WPA_ALG_GCMP:
4711                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4712                                     WLAN_CIPHER_SUITE_GCMP);
4713                         break;
4714                 case WPA_ALG_IGTK:
4715                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4716                                     WLAN_CIPHER_SUITE_AES_CMAC);
4717                         break;
4718                 case WPA_ALG_SMS4:
4719                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4720                                     WLAN_CIPHER_SUITE_SMS4);
4721                         break;
4722                 case WPA_ALG_KRK:
4723                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4724                                     WLAN_CIPHER_SUITE_KRK);
4725                         break;
4726                 default:
4727                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4728                                    "algorithm %d", __func__, alg);
4729                         nlmsg_free(msg);
4730                         return -1;
4731                 }
4732         }
4733
4734         if (seq && seq_len)
4735                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
4736
4737         if (addr && !is_broadcast_ether_addr(addr)) {
4738                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
4739                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4740
4741                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
4742                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
4743                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
4744                                     NL80211_KEYTYPE_GROUP);
4745                 }
4746         } else if (addr && is_broadcast_ether_addr(addr)) {
4747                 struct nlattr *types;
4748
4749                 wpa_printf(MSG_DEBUG, "   broadcast key");
4750
4751                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
4752                 if (!types)
4753                         goto nla_put_failure;
4754                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4755                 nla_nest_end(msg, types);
4756         }
4757         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4758         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4759
4760         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4761         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
4762                 ret = 0;
4763         if (ret)
4764                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
4765                            ret, strerror(-ret));
4766
4767         /*
4768          * If we failed or don't need to set the default TX key (below),
4769          * we're done here.
4770          */
4771         if (ret || !set_tx || alg == WPA_ALG_NONE)
4772                 return ret;
4773         if (is_ap_interface(drv->nlmode) && addr &&
4774             !is_broadcast_ether_addr(addr))
4775                 return ret;
4776
4777         msg = nlmsg_alloc();
4778         if (!msg)
4779                 return -ENOMEM;
4780
4781         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
4782         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4783         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4784         if (alg == WPA_ALG_IGTK)
4785                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
4786         else
4787                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
4788         if (addr && is_broadcast_ether_addr(addr)) {
4789                 struct nlattr *types;
4790
4791                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
4792                 if (!types)
4793                         goto nla_put_failure;
4794                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4795                 nla_nest_end(msg, types);
4796         } else if (addr) {
4797                 struct nlattr *types;
4798
4799                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
4800                 if (!types)
4801                         goto nla_put_failure;
4802                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST);
4803                 nla_nest_end(msg, types);
4804         }
4805
4806         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4807         if (ret == -ENOENT)
4808                 ret = 0;
4809         if (ret)
4810                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
4811                            "err=%d %s)", ret, strerror(-ret));
4812         return ret;
4813
4814 nla_put_failure:
4815         nlmsg_free(msg);
4816         return -ENOBUFS;
4817 }
4818
4819
4820 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
4821                       int key_idx, int defkey,
4822                       const u8 *seq, size_t seq_len,
4823                       const u8 *key, size_t key_len)
4824 {
4825         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
4826         if (!key_attr)
4827                 return -1;
4828
4829         if (defkey && alg == WPA_ALG_IGTK)
4830                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
4831         else if (defkey)
4832                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4833
4834         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
4835
4836         switch (alg) {
4837         case WPA_ALG_WEP:
4838                 if (key_len == 5)
4839                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4840                                     WLAN_CIPHER_SUITE_WEP40);
4841                 else
4842                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4843                                     WLAN_CIPHER_SUITE_WEP104);
4844                 break;
4845         case WPA_ALG_TKIP:
4846                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
4847                 break;
4848         case WPA_ALG_CCMP:
4849                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
4850                 break;
4851         case WPA_ALG_GCMP:
4852                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_GCMP);
4853                 break;
4854         case WPA_ALG_IGTK:
4855                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4856                             WLAN_CIPHER_SUITE_AES_CMAC);
4857                 break;
4858         default:
4859                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4860                            "algorithm %d", __func__, alg);
4861                 return -1;
4862         }
4863
4864         if (seq && seq_len)
4865                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
4866
4867         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
4868
4869         nla_nest_end(msg, key_attr);
4870
4871         return 0;
4872  nla_put_failure:
4873         return -1;
4874 }
4875
4876
4877 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
4878                                  struct nl_msg *msg)
4879 {
4880         int i, privacy = 0;
4881         struct nlattr *nl_keys, *nl_key;
4882
4883         for (i = 0; i < 4; i++) {
4884                 if (!params->wep_key[i])
4885                         continue;
4886                 privacy = 1;
4887                 break;
4888         }
4889         if (params->wps == WPS_MODE_PRIVACY)
4890                 privacy = 1;
4891         if (params->pairwise_suite &&
4892             params->pairwise_suite != WPA_CIPHER_NONE)
4893                 privacy = 1;
4894
4895         if (!privacy)
4896                 return 0;
4897
4898         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4899
4900         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
4901         if (!nl_keys)
4902                 goto nla_put_failure;
4903
4904         for (i = 0; i < 4; i++) {
4905                 if (!params->wep_key[i])
4906                         continue;
4907
4908                 nl_key = nla_nest_start(msg, i);
4909                 if (!nl_key)
4910                         goto nla_put_failure;
4911
4912                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
4913                         params->wep_key[i]);
4914                 if (params->wep_key_len[i] == 5)
4915                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4916                                     WLAN_CIPHER_SUITE_WEP40);
4917                 else
4918                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4919                                     WLAN_CIPHER_SUITE_WEP104);
4920
4921                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
4922
4923                 if (i == params->wep_tx_keyidx)
4924                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4925
4926                 nla_nest_end(msg, nl_key);
4927         }
4928         nla_nest_end(msg, nl_keys);
4929
4930         return 0;
4931
4932 nla_put_failure:
4933         return -ENOBUFS;
4934 }
4935
4936
4937 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
4938                                    const u8 *addr, int cmd, u16 reason_code,
4939                                    int local_state_change)
4940 {
4941         int ret = -1;
4942         struct nl_msg *msg;
4943
4944         msg = nlmsg_alloc();
4945         if (!msg)
4946                 return -1;
4947
4948         nl80211_cmd(drv, msg, 0, cmd);
4949
4950         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4951         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4952         if (addr)
4953                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4954         if (local_state_change)
4955                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4956
4957         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4958         msg = NULL;
4959         if (ret) {
4960                 wpa_dbg(drv->ctx, MSG_DEBUG,
4961                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
4962                         reason_code, ret, strerror(-ret));
4963                 goto nla_put_failure;
4964         }
4965         ret = 0;
4966
4967 nla_put_failure:
4968         nlmsg_free(msg);
4969         return ret;
4970 }
4971
4972
4973 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
4974                                          int reason_code)
4975 {
4976         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
4977         nl80211_mark_disconnected(drv);
4978         drv->ignore_next_local_disconnect = 0;
4979         /* Disconnect command doesn't need BSSID - it uses cached value */
4980         return wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
4981                                        reason_code, 0);
4982 }
4983
4984
4985 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
4986                                              const u8 *addr, int reason_code)
4987 {
4988         struct wpa_driver_nl80211_data *drv = bss->drv;
4989         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4990                 return wpa_driver_nl80211_disconnect(drv, reason_code);
4991         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4992                    __func__, MAC2STR(addr), reason_code);
4993         nl80211_mark_disconnected(drv);
4994         if (drv->nlmode == NL80211_IFTYPE_ADHOC)
4995                 return nl80211_leave_ibss(drv);
4996         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
4997                                        reason_code, 0);
4998 }
4999
5000
5001 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
5002                                      struct wpa_driver_auth_params *params)
5003 {
5004         int i;
5005
5006         drv->auth_freq = params->freq;
5007         drv->auth_alg = params->auth_alg;
5008         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
5009         drv->auth_local_state_change = params->local_state_change;
5010         drv->auth_p2p = params->p2p;
5011
5012         if (params->bssid)
5013                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
5014         else
5015                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
5016
5017         if (params->ssid) {
5018                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
5019                 drv->auth_ssid_len = params->ssid_len;
5020         } else
5021                 drv->auth_ssid_len = 0;
5022
5023
5024         os_free(drv->auth_ie);
5025         drv->auth_ie = NULL;
5026         drv->auth_ie_len = 0;
5027         if (params->ie) {
5028                 drv->auth_ie = os_malloc(params->ie_len);
5029                 if (drv->auth_ie) {
5030                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
5031                         drv->auth_ie_len = params->ie_len;
5032                 }
5033         }
5034
5035         for (i = 0; i < 4; i++) {
5036                 if (params->wep_key[i] && params->wep_key_len[i] &&
5037                     params->wep_key_len[i] <= 16) {
5038                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
5039                                   params->wep_key_len[i]);
5040                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
5041                 } else
5042                         drv->auth_wep_key_len[i] = 0;
5043         }
5044 }
5045
5046
5047 static int wpa_driver_nl80211_authenticate(
5048         struct i802_bss *bss, struct wpa_driver_auth_params *params)
5049 {
5050         struct wpa_driver_nl80211_data *drv = bss->drv;
5051         int ret = -1, i;
5052         struct nl_msg *msg;
5053         enum nl80211_auth_type type;
5054         enum nl80211_iftype nlmode;
5055         int count = 0;
5056         int is_retry;
5057
5058         is_retry = drv->retry_auth;
5059         drv->retry_auth = 0;
5060
5061         nl80211_mark_disconnected(drv);
5062         os_memset(drv->auth_bssid, 0, ETH_ALEN);
5063         if (params->bssid)
5064                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5065         else
5066                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5067         /* FIX: IBSS mode */
5068         nlmode = params->p2p ?
5069                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5070         if (drv->nlmode != nlmode &&
5071             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
5072                 return -1;
5073
5074 retry:
5075         msg = nlmsg_alloc();
5076         if (!msg)
5077                 return -1;
5078
5079         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
5080                    drv->ifindex);
5081
5082         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
5083
5084         for (i = 0; i < 4; i++) {
5085                 if (!params->wep_key[i])
5086                         continue;
5087                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
5088                                            NULL, i,
5089                                            i == params->wep_tx_keyidx, NULL, 0,
5090                                            params->wep_key[i],
5091                                            params->wep_key_len[i]);
5092                 if (params->wep_tx_keyidx != i)
5093                         continue;
5094                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
5095                                params->wep_key[i], params->wep_key_len[i])) {
5096                         nlmsg_free(msg);
5097                         return -1;
5098                 }
5099         }
5100
5101         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5102         if (params->bssid) {
5103                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5104                            MAC2STR(params->bssid));
5105                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5106         }
5107         if (params->freq) {
5108                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
5109                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
5110         }
5111         if (params->ssid) {
5112                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5113                                   params->ssid, params->ssid_len);
5114                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5115                         params->ssid);
5116         }
5117         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
5118         if (params->ie)
5119                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
5120         if (params->sae_data) {
5121                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
5122                             params->sae_data_len);
5123                 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
5124                         params->sae_data);
5125         }
5126         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5127                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5128         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5129                 type = NL80211_AUTHTYPE_SHARED_KEY;
5130         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5131                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5132         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5133                 type = NL80211_AUTHTYPE_FT;
5134         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
5135                 type = NL80211_AUTHTYPE_SAE;
5136         else
5137                 goto nla_put_failure;
5138         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5139         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5140         if (params->local_state_change) {
5141                 wpa_printf(MSG_DEBUG, "  * Local state change only");
5142                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
5143         }
5144
5145         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5146         msg = NULL;
5147         if (ret) {
5148                 wpa_dbg(drv->ctx, MSG_DEBUG,
5149                         "nl80211: MLME command failed (auth): ret=%d (%s)",
5150                         ret, strerror(-ret));
5151                 count++;
5152                 if (ret == -EALREADY && count == 1 && params->bssid &&
5153                     !params->local_state_change) {
5154                         /*
5155                          * mac80211 does not currently accept new
5156                          * authentication if we are already authenticated. As a
5157                          * workaround, force deauthentication and try again.
5158                          */
5159                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
5160                                    "after forced deauthentication");
5161                         wpa_driver_nl80211_deauthenticate(
5162                                 bss, params->bssid,
5163                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
5164                         nlmsg_free(msg);
5165                         goto retry;
5166                 }
5167
5168                 if (ret == -ENOENT && params->freq && !is_retry) {
5169                         /*
5170                          * cfg80211 has likely expired the BSS entry even
5171                          * though it was previously available in our internal
5172                          * BSS table. To recover quickly, start a single
5173                          * channel scan on the specified channel.
5174                          */
5175                         struct wpa_driver_scan_params scan;
5176                         int freqs[2];
5177
5178                         os_memset(&scan, 0, sizeof(scan));
5179                         scan.num_ssids = 1;
5180                         if (params->ssid) {
5181                                 scan.ssids[0].ssid = params->ssid;
5182                                 scan.ssids[0].ssid_len = params->ssid_len;
5183                         }
5184                         freqs[0] = params->freq;
5185                         freqs[1] = 0;
5186                         scan.freqs = freqs;
5187                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
5188                                    "channel scan to refresh cfg80211 BSS "
5189                                    "entry");
5190                         ret = wpa_driver_nl80211_scan(bss, &scan);
5191                         if (ret == 0) {
5192                                 nl80211_copy_auth_params(drv, params);
5193                                 drv->scan_for_auth = 1;
5194                         }
5195                 } else if (is_retry) {
5196                         /*
5197                          * Need to indicate this with an event since the return
5198                          * value from the retry is not delivered to core code.
5199                          */
5200                         union wpa_event_data event;
5201                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
5202                                    "failed");
5203                         os_memset(&event, 0, sizeof(event));
5204                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
5205                                   ETH_ALEN);
5206                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
5207                                              &event);
5208                 }
5209
5210                 goto nla_put_failure;
5211         }
5212         ret = 0;
5213         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
5214                    "successfully");
5215
5216 nla_put_failure:
5217         nlmsg_free(msg);
5218         return ret;
5219 }
5220
5221
5222 static int wpa_driver_nl80211_authenticate_retry(
5223         struct wpa_driver_nl80211_data *drv)
5224 {
5225         struct wpa_driver_auth_params params;
5226         struct i802_bss *bss = &drv->first_bss;
5227         int i;
5228
5229         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
5230
5231         os_memset(&params, 0, sizeof(params));
5232         params.freq = drv->auth_freq;
5233         params.auth_alg = drv->auth_alg;
5234         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
5235         params.local_state_change = drv->auth_local_state_change;
5236         params.p2p = drv->auth_p2p;
5237
5238         if (!is_zero_ether_addr(drv->auth_bssid_))
5239                 params.bssid = drv->auth_bssid_;
5240
5241         if (drv->auth_ssid_len) {
5242                 params.ssid = drv->auth_ssid;
5243                 params.ssid_len = drv->auth_ssid_len;
5244         }
5245
5246         params.ie = drv->auth_ie;
5247         params.ie_len = drv->auth_ie_len;
5248
5249         for (i = 0; i < 4; i++) {
5250                 if (drv->auth_wep_key_len[i]) {
5251                         params.wep_key[i] = drv->auth_wep_key[i];
5252                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
5253                 }
5254         }
5255
5256         drv->retry_auth = 1;
5257         return wpa_driver_nl80211_authenticate(bss, &params);
5258 }
5259
5260
5261 struct phy_info_arg {
5262         u16 *num_modes;
5263         struct hostapd_hw_modes *modes;
5264         int last_mode, last_chan_idx;
5265 };
5266
5267 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
5268                              struct nlattr *ampdu_factor,
5269                              struct nlattr *ampdu_density,
5270                              struct nlattr *mcs_set)
5271 {
5272         if (capa)
5273                 mode->ht_capab = nla_get_u16(capa);
5274
5275         if (ampdu_factor)
5276                 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
5277
5278         if (ampdu_density)
5279                 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
5280
5281         if (mcs_set && nla_len(mcs_set) >= 16) {
5282                 u8 *mcs;
5283                 mcs = nla_data(mcs_set);
5284                 os_memcpy(mode->mcs_set, mcs, 16);
5285         }
5286 }
5287
5288
5289 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
5290                               struct nlattr *capa,
5291                               struct nlattr *mcs_set)
5292 {
5293         if (capa)
5294                 mode->vht_capab = nla_get_u32(capa);
5295
5296         if (mcs_set && nla_len(mcs_set) >= 8) {
5297                 u8 *mcs;
5298                 mcs = nla_data(mcs_set);
5299                 os_memcpy(mode->vht_mcs_set, mcs, 8);
5300         }
5301 }
5302
5303
5304 static void phy_info_freq(struct hostapd_hw_modes *mode,
5305                           struct hostapd_channel_data *chan,
5306                           struct nlattr *tb_freq[])
5307 {
5308         u8 channel;
5309         chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
5310         chan->flag = 0;
5311         if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
5312                 chan->chan = channel;
5313
5314         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
5315                 chan->flag |= HOSTAPD_CHAN_DISABLED;
5316         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
5317                 chan->flag |= HOSTAPD_CHAN_PASSIVE_SCAN;
5318         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
5319                 chan->flag |= HOSTAPD_CHAN_NO_IBSS;
5320         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
5321                 chan->flag |= HOSTAPD_CHAN_RADAR;
5322
5323         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
5324             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
5325                 chan->max_tx_power = nla_get_u32(
5326                         tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
5327         if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
5328                 enum nl80211_dfs_state state =
5329                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
5330
5331                 switch (state) {
5332                 case NL80211_DFS_USABLE:
5333                         chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
5334                         break;
5335                 case NL80211_DFS_AVAILABLE:
5336                         chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
5337                         break;
5338                 case NL80211_DFS_UNAVAILABLE:
5339                         chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
5340                         break;
5341                 }
5342         }
5343 }
5344
5345
5346 static int phy_info_freqs(struct phy_info_arg *phy_info,
5347                           struct hostapd_hw_modes *mode, struct nlattr *tb)
5348 {
5349         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
5350                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
5351                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
5352                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
5353                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
5354                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
5355                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
5356                 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
5357         };
5358         int new_channels = 0;
5359         struct hostapd_channel_data *channel;
5360         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
5361         struct nlattr *nl_freq;
5362         int rem_freq, idx;
5363
5364         if (tb == NULL)
5365                 return NL_OK;
5366
5367         nla_for_each_nested(nl_freq, tb, rem_freq) {
5368                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
5369                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
5370                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
5371                         continue;
5372                 new_channels++;
5373         }
5374
5375         channel = os_realloc_array(mode->channels,
5376                                    mode->num_channels + new_channels,
5377                                    sizeof(struct hostapd_channel_data));
5378         if (!channel)
5379                 return NL_SKIP;
5380
5381         mode->channels = channel;
5382         mode->num_channels += new_channels;
5383
5384         idx = phy_info->last_chan_idx;
5385
5386         nla_for_each_nested(nl_freq, tb, rem_freq) {
5387                 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
5388                           nla_data(nl_freq), nla_len(nl_freq), freq_policy);
5389                 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
5390                         continue;
5391                 phy_info_freq(mode, &mode->channels[idx], tb_freq);
5392                 idx++;
5393         }
5394         phy_info->last_chan_idx = idx;
5395
5396         return NL_OK;
5397 }
5398
5399
5400 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
5401 {
5402         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
5403                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
5404                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
5405                 { .type = NLA_FLAG },
5406         };
5407         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
5408         struct nlattr *nl_rate;
5409         int rem_rate, idx;
5410
5411         if (tb == NULL)
5412                 return NL_OK;
5413
5414         nla_for_each_nested(nl_rate, tb, rem_rate) {
5415                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
5416                           nla_data(nl_rate), nla_len(nl_rate),
5417                           rate_policy);
5418                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
5419                         continue;
5420                 mode->num_rates++;
5421         }
5422
5423         mode->rates = os_calloc(mode->num_rates, sizeof(int));
5424         if (!mode->rates)
5425                 return NL_SKIP;
5426
5427         idx = 0;
5428
5429         nla_for_each_nested(nl_rate, tb, rem_rate) {
5430                 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
5431                           nla_data(nl_rate), nla_len(nl_rate),
5432                           rate_policy);
5433                 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
5434                         continue;
5435                 mode->rates[idx] = nla_get_u32(
5436                         tb_rate[NL80211_BITRATE_ATTR_RATE]);
5437                 idx++;
5438         }
5439
5440         return NL_OK;
5441 }
5442
5443
5444 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
5445 {
5446         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
5447         struct hostapd_hw_modes *mode;
5448         int ret;
5449
5450         if (phy_info->last_mode != nl_band->nla_type) {
5451                 mode = os_realloc_array(phy_info->modes,
5452                                         *phy_info->num_modes + 1,
5453                                         sizeof(*mode));
5454                 if (!mode)
5455                         return NL_SKIP;
5456                 phy_info->modes = mode;
5457
5458                 mode = &phy_info->modes[*(phy_info->num_modes)];
5459                 os_memset(mode, 0, sizeof(*mode));
5460                 mode->mode = NUM_HOSTAPD_MODES;
5461                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
5462                 *(phy_info->num_modes) += 1;
5463                 phy_info->last_mode = nl_band->nla_type;
5464                 phy_info->last_chan_idx = 0;
5465         } else
5466                 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
5467
5468         nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
5469                   nla_len(nl_band), NULL);
5470
5471         phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
5472                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
5473                          tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
5474                          tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
5475         phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
5476                           tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
5477         ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
5478         if (ret != NL_OK)
5479                 return ret;
5480         ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
5481         if (ret != NL_OK)
5482                 return ret;
5483
5484         return NL_OK;
5485 }
5486
5487
5488 static int phy_info_handler(struct nl_msg *msg, void *arg)
5489 {
5490         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
5491         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5492         struct phy_info_arg *phy_info = arg;
5493         struct nlattr *nl_band;
5494         int rem_band;
5495
5496         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5497                   genlmsg_attrlen(gnlh, 0), NULL);
5498
5499         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
5500                 return NL_SKIP;
5501
5502         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
5503         {
5504                 int res = phy_info_band(phy_info, nl_band);
5505                 if (res != NL_OK)
5506                         return res;
5507         }
5508
5509         return NL_SKIP;
5510 }
5511
5512
5513 static struct hostapd_hw_modes *
5514 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
5515                                      u16 *num_modes)
5516 {
5517         u16 m;
5518         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
5519         int i, mode11g_idx = -1;
5520
5521         /* heuristic to set up modes */
5522         for (m = 0; m < *num_modes; m++) {
5523                 if (!modes[m].num_channels)
5524                         continue;
5525                 if (modes[m].channels[0].freq < 4000) {
5526                         modes[m].mode = HOSTAPD_MODE_IEEE80211B;
5527                         for (i = 0; i < modes[m].num_rates; i++) {
5528                                 if (modes[m].rates[i] > 200) {
5529                                         modes[m].mode = HOSTAPD_MODE_IEEE80211G;
5530                                         break;
5531                                 }
5532                         }
5533                 } else if (modes[m].channels[0].freq > 50000)
5534                         modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
5535                 else
5536                         modes[m].mode = HOSTAPD_MODE_IEEE80211A;
5537         }
5538
5539         /* If only 802.11g mode is included, use it to construct matching
5540          * 802.11b mode data. */
5541
5542         for (m = 0; m < *num_modes; m++) {
5543                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
5544                         return modes; /* 802.11b already included */
5545                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
5546                         mode11g_idx = m;
5547         }
5548
5549         if (mode11g_idx < 0)
5550                 return modes; /* 2.4 GHz band not supported at all */
5551
5552         nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
5553         if (nmodes == NULL)
5554                 return modes; /* Could not add 802.11b mode */
5555
5556         mode = &nmodes[*num_modes];
5557         os_memset(mode, 0, sizeof(*mode));
5558         (*num_modes)++;
5559         modes = nmodes;
5560
5561         mode->mode = HOSTAPD_MODE_IEEE80211B;
5562
5563         mode11g = &modes[mode11g_idx];
5564         mode->num_channels = mode11g->num_channels;
5565         mode->channels = os_malloc(mode11g->num_channels *
5566                                    sizeof(struct hostapd_channel_data));
5567         if (mode->channels == NULL) {
5568                 (*num_modes)--;
5569                 return modes; /* Could not add 802.11b mode */
5570         }
5571         os_memcpy(mode->channels, mode11g->channels,
5572                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
5573
5574         mode->num_rates = 0;
5575         mode->rates = os_malloc(4 * sizeof(int));
5576         if (mode->rates == NULL) {
5577                 os_free(mode->channels);
5578                 (*num_modes)--;
5579                 return modes; /* Could not add 802.11b mode */
5580         }
5581
5582         for (i = 0; i < mode11g->num_rates; i++) {
5583                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
5584                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
5585                         continue;
5586                 mode->rates[mode->num_rates] = mode11g->rates[i];
5587                 mode->num_rates++;
5588                 if (mode->num_rates == 4)
5589                         break;
5590         }
5591
5592         if (mode->num_rates == 0) {
5593                 os_free(mode->channels);
5594                 os_free(mode->rates);
5595                 (*num_modes)--;
5596                 return modes; /* No 802.11b rates */
5597         }
5598
5599         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
5600                    "information");
5601
5602         return modes;
5603 }
5604
5605
5606 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
5607                                   int end)
5608 {
5609         int c;
5610
5611         for (c = 0; c < mode->num_channels; c++) {
5612                 struct hostapd_channel_data *chan = &mode->channels[c];
5613                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
5614                         chan->flag |= HOSTAPD_CHAN_HT40;
5615         }
5616 }
5617
5618
5619 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
5620                                       int end)
5621 {
5622         int c;
5623
5624         for (c = 0; c < mode->num_channels; c++) {
5625                 struct hostapd_channel_data *chan = &mode->channels[c];
5626                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
5627                         continue;
5628                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
5629                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
5630                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
5631                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
5632         }
5633 }
5634
5635
5636 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
5637                                   struct phy_info_arg *results)
5638 {
5639         u32 start, end, max_bw;
5640         u16 m;
5641
5642         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5643             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5644             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5645                 return;
5646
5647         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5648         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5649         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5650
5651         wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
5652                    start, end, max_bw);
5653         if (max_bw < 40)
5654                 return;
5655
5656         for (m = 0; m < *results->num_modes; m++) {
5657                 if (!(results->modes[m].ht_capab &
5658                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5659                         continue;
5660                 nl80211_set_ht40_mode(&results->modes[m], start, end);
5661         }
5662 }
5663
5664
5665 static void nl80211_reg_rule_sec(struct nlattr *tb[],
5666                                  struct phy_info_arg *results)
5667 {
5668         u32 start, end, max_bw;
5669         u16 m;
5670
5671         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5672             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5673             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5674                 return;
5675
5676         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5677         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5678         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5679
5680         if (max_bw < 20)
5681                 return;
5682
5683         for (m = 0; m < *results->num_modes; m++) {
5684                 if (!(results->modes[m].ht_capab &
5685                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5686                         continue;
5687                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
5688         }
5689 }
5690
5691
5692 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
5693 {
5694         struct phy_info_arg *results = arg;
5695         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
5696         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5697         struct nlattr *nl_rule;
5698         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
5699         int rem_rule;
5700         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
5701                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5702                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5703                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5704                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5705                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5706                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5707         };
5708
5709         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5710                   genlmsg_attrlen(gnlh, 0), NULL);
5711         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
5712             !tb_msg[NL80211_ATTR_REG_RULES]) {
5713                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
5714                            "available");
5715                 return NL_SKIP;
5716         }
5717
5718         wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
5719                    (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
5720
5721         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5722         {
5723                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5724                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5725                 nl80211_reg_rule_ht40(tb_rule, results);
5726         }
5727
5728         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5729         {
5730                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5731                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5732                 nl80211_reg_rule_sec(tb_rule, results);
5733         }
5734
5735         return NL_SKIP;
5736 }
5737
5738
5739 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
5740                                   struct phy_info_arg *results)
5741 {
5742         struct nl_msg *msg;
5743
5744         msg = nlmsg_alloc();
5745         if (!msg)
5746                 return -ENOMEM;
5747
5748         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
5749         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
5750 }
5751
5752
5753 static struct hostapd_hw_modes *
5754 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
5755 {
5756         u32 feat;
5757         struct i802_bss *bss = priv;
5758         struct wpa_driver_nl80211_data *drv = bss->drv;
5759         struct nl_msg *msg;
5760         struct phy_info_arg result = {
5761                 .num_modes = num_modes,
5762                 .modes = NULL,
5763                 .last_mode = -1,
5764         };
5765
5766         *num_modes = 0;
5767         *flags = 0;
5768
5769         msg = nlmsg_alloc();
5770         if (!msg)
5771                 return NULL;
5772
5773         feat = get_nl80211_protocol_features(drv);
5774         if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
5775                 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY);
5776         else
5777                 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
5778
5779         NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
5780         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5781
5782         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
5783                 nl80211_set_ht40_flags(drv, &result);
5784                 return wpa_driver_nl80211_postprocess_modes(result.modes,
5785                                                             num_modes);
5786         }
5787         msg = NULL;
5788  nla_put_failure:
5789         nlmsg_free(msg);
5790         return NULL;
5791 }
5792
5793
5794 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
5795                                         const void *data, size_t len,
5796                                         int encrypt, int noack)
5797 {
5798         __u8 rtap_hdr[] = {
5799                 0x00, 0x00, /* radiotap version */
5800                 0x0e, 0x00, /* radiotap length */
5801                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
5802                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
5803                 0x00,       /* padding */
5804                 0x00, 0x00, /* RX and TX flags to indicate that */
5805                 0x00, 0x00, /* this is the injected frame directly */
5806         };
5807         struct iovec iov[2] = {
5808                 {
5809                         .iov_base = &rtap_hdr,
5810                         .iov_len = sizeof(rtap_hdr),
5811                 },
5812                 {
5813                         .iov_base = (void *) data,
5814                         .iov_len = len,
5815                 }
5816         };
5817         struct msghdr msg = {
5818                 .msg_name = NULL,
5819                 .msg_namelen = 0,
5820                 .msg_iov = iov,
5821                 .msg_iovlen = 2,
5822                 .msg_control = NULL,
5823                 .msg_controllen = 0,
5824                 .msg_flags = 0,
5825         };
5826         int res;
5827         u16 txflags = 0;
5828
5829         if (encrypt)
5830                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
5831
5832         if (drv->monitor_sock < 0) {
5833                 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
5834                            "for %s", __func__);
5835                 return -1;
5836         }
5837
5838         if (noack)
5839                 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
5840         WPA_PUT_LE16(&rtap_hdr[12], txflags);
5841
5842         res = sendmsg(drv->monitor_sock, &msg, 0);
5843         if (res < 0) {
5844                 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
5845                 return -1;
5846         }
5847         return 0;
5848 }
5849
5850
5851 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
5852                                          const void *data, size_t len,
5853                                          int encrypt, int noack,
5854                                          unsigned int freq, int no_cck,
5855                                          int offchanok, unsigned int wait_time)
5856 {
5857         struct wpa_driver_nl80211_data *drv = bss->drv;
5858         u64 cookie;
5859
5860         if (freq == 0)
5861                 freq = bss->freq;
5862
5863         if (drv->use_monitor)
5864                 return wpa_driver_nl80211_send_mntr(drv, data, len,
5865                                                     encrypt, noack);
5866
5867         return nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
5868                                       &cookie, no_cck, noack, offchanok);
5869 }
5870
5871
5872 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
5873                                         size_t data_len, int noack,
5874                                         unsigned int freq, int no_cck,
5875                                         int offchanok,
5876                                         unsigned int wait_time)
5877 {
5878         struct wpa_driver_nl80211_data *drv = bss->drv;
5879         struct ieee80211_mgmt *mgmt;
5880         int encrypt = 1;
5881         u16 fc;
5882
5883         mgmt = (struct ieee80211_mgmt *) data;
5884         fc = le_to_host16(mgmt->frame_control);
5885
5886         if (is_sta_interface(drv->nlmode) &&
5887             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5888             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
5889                 /*
5890                  * The use of last_mgmt_freq is a bit of a hack,
5891                  * but it works due to the single-threaded nature
5892                  * of wpa_supplicant.
5893                  */
5894                 if (freq == 0)
5895                         freq = drv->last_mgmt_freq;
5896                 return nl80211_send_frame_cmd(bss, freq, 0,
5897                                               data, data_len, NULL, 1, noack,
5898                                               1);
5899         }
5900
5901         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
5902                 if (freq == 0)
5903                         freq = bss->freq;
5904                 return nl80211_send_frame_cmd(bss, freq,
5905                                               (int) freq == bss->freq ? 0 :
5906                                               wait_time,
5907                                               data, data_len,
5908                                               &drv->send_action_cookie,
5909                                               no_cck, noack, offchanok);
5910         }
5911
5912         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5913             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
5914                 /*
5915                  * Only one of the authentication frame types is encrypted.
5916                  * In order for static WEP encryption to work properly (i.e.,
5917                  * to not encrypt the frame), we need to tell mac80211 about
5918                  * the frames that must not be encrypted.
5919                  */
5920                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
5921                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
5922                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
5923                         encrypt = 0;
5924         }
5925
5926         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
5927                                              noack, freq, no_cck, offchanok,
5928                                              wait_time);
5929 }
5930
5931
5932 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
5933                            int slot, int ht_opmode, int ap_isolate,
5934                            int *basic_rates)
5935 {
5936         struct wpa_driver_nl80211_data *drv = bss->drv;
5937         struct nl_msg *msg;
5938
5939         msg = nlmsg_alloc();
5940         if (!msg)
5941                 return -ENOMEM;
5942
5943         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5944
5945         if (cts >= 0)
5946                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
5947         if (preamble >= 0)
5948                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
5949         if (slot >= 0)
5950                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
5951         if (ht_opmode >= 0)
5952                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
5953         if (ap_isolate >= 0)
5954                 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
5955
5956         if (basic_rates) {
5957                 u8 rates[NL80211_MAX_SUPP_RATES];
5958                 u8 rates_len = 0;
5959                 int i;
5960
5961                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
5962                      i++)
5963                         rates[rates_len++] = basic_rates[i] / 5;
5964
5965                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5966         }
5967
5968         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5969
5970         return send_and_recv_msgs(drv, msg, NULL, NULL);
5971  nla_put_failure:
5972         nlmsg_free(msg);
5973         return -ENOBUFS;
5974 }
5975
5976
5977 static int wpa_driver_nl80211_set_acl(void *priv,
5978                                       struct hostapd_acl_params *params)
5979 {
5980         struct i802_bss *bss = priv;
5981         struct wpa_driver_nl80211_data *drv = bss->drv;
5982         struct nl_msg *msg;
5983         struct nlattr *acl;
5984         unsigned int i;
5985         int ret = 0;
5986
5987         if (!(drv->capa.max_acl_mac_addrs))
5988                 return -ENOTSUP;
5989
5990         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
5991                 return -ENOTSUP;
5992
5993         msg = nlmsg_alloc();
5994         if (!msg)
5995                 return -ENOMEM;
5996
5997         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
5998                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
5999
6000         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL);
6001
6002         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6003
6004         NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
6005                     NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
6006                     NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED);
6007
6008         acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
6009         if (acl == NULL)
6010                 goto nla_put_failure;
6011
6012         for (i = 0; i < params->num_mac_acl; i++)
6013                 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr);
6014
6015         nla_nest_end(msg, acl);
6016
6017         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6018         msg = NULL;
6019         if (ret) {
6020                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
6021                            ret, strerror(-ret));
6022         }
6023
6024 nla_put_failure:
6025         nlmsg_free(msg);
6026
6027         return ret;
6028 }
6029
6030
6031 static int wpa_driver_nl80211_set_ap(void *priv,
6032                                      struct wpa_driver_ap_params *params)
6033 {
6034         struct i802_bss *bss = priv;
6035         struct wpa_driver_nl80211_data *drv = bss->drv;
6036         struct nl_msg *msg;
6037         u8 cmd = NL80211_CMD_NEW_BEACON;
6038         int ret;
6039         int beacon_set;
6040         int ifindex = if_nametoindex(bss->ifname);
6041         int num_suites;
6042         u32 suites[10];
6043         u32 ver;
6044
6045         beacon_set = bss->beacon_set;
6046
6047         msg = nlmsg_alloc();
6048         if (!msg)
6049                 return -ENOMEM;
6050
6051         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
6052                    beacon_set);
6053         if (beacon_set)
6054                 cmd = NL80211_CMD_SET_BEACON;
6055
6056         nl80211_cmd(drv, msg, 0, cmd);
6057         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
6058                     params->head, params->head_len);
6059         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
6060         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
6061                     params->tail, params->tail_len);
6062         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
6063         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
6064         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
6065         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
6066         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
6067         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
6068         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
6069         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
6070                           params->ssid, params->ssid_len);
6071         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6072                 params->ssid);
6073         if (params->proberesp && params->proberesp_len) {
6074                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
6075                             params->proberesp, params->proberesp_len);
6076                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
6077                         params->proberesp);
6078         }
6079         switch (params->hide_ssid) {
6080         case NO_SSID_HIDING:
6081                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
6082                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
6083                             NL80211_HIDDEN_SSID_NOT_IN_USE);
6084                 break;
6085         case HIDDEN_SSID_ZERO_LEN:
6086                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
6087                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
6088                             NL80211_HIDDEN_SSID_ZERO_LEN);
6089                 break;
6090         case HIDDEN_SSID_ZERO_CONTENTS:
6091                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
6092                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
6093                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
6094                 break;
6095         }
6096         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
6097         if (params->privacy)
6098                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
6099         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
6100         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
6101             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
6102                 /* Leave out the attribute */
6103         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
6104                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
6105                             NL80211_AUTHTYPE_SHARED_KEY);
6106         else
6107                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
6108                             NL80211_AUTHTYPE_OPEN_SYSTEM);
6109
6110         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
6111         ver = 0;
6112         if (params->wpa_version & WPA_PROTO_WPA)
6113                 ver |= NL80211_WPA_VERSION_1;
6114         if (params->wpa_version & WPA_PROTO_RSN)
6115                 ver |= NL80211_WPA_VERSION_2;
6116         if (ver)
6117                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
6118
6119         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
6120                    params->key_mgmt_suites);
6121         num_suites = 0;
6122         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
6123                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
6124         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
6125                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
6126         if (num_suites) {
6127                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
6128                         num_suites * sizeof(u32), suites);
6129         }
6130
6131         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
6132             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
6133                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
6134
6135         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
6136                    params->pairwise_ciphers);
6137         num_suites = 0;
6138         if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
6139                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
6140         if (params->pairwise_ciphers & WPA_CIPHER_GCMP)
6141                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
6142         if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
6143                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
6144         if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
6145                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
6146         if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
6147                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
6148         if (num_suites) {
6149                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
6150                         num_suites * sizeof(u32), suites);
6151         }
6152
6153         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
6154                    params->group_cipher);
6155         switch (params->group_cipher) {
6156         case WPA_CIPHER_CCMP:
6157                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
6158                             WLAN_CIPHER_SUITE_CCMP);
6159                 break;
6160         case WPA_CIPHER_GCMP:
6161                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
6162                             WLAN_CIPHER_SUITE_GCMP);
6163                 break;
6164         case WPA_CIPHER_TKIP:
6165                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
6166                             WLAN_CIPHER_SUITE_TKIP);
6167                 break;
6168         case WPA_CIPHER_WEP104:
6169                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
6170                             WLAN_CIPHER_SUITE_WEP104);
6171                 break;
6172         case WPA_CIPHER_WEP40:
6173                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
6174                             WLAN_CIPHER_SUITE_WEP40);
6175                 break;
6176         }
6177
6178         if (params->beacon_ies) {
6179                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
6180                                 params->beacon_ies);
6181                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
6182                         wpabuf_head(params->beacon_ies));
6183         }
6184         if (params->proberesp_ies) {
6185                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
6186                                 params->proberesp_ies);
6187                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
6188                         wpabuf_len(params->proberesp_ies),
6189                         wpabuf_head(params->proberesp_ies));
6190         }
6191         if (params->assocresp_ies) {
6192                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
6193                                 params->assocresp_ies);
6194                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
6195                         wpabuf_len(params->assocresp_ies),
6196                         wpabuf_head(params->assocresp_ies));
6197         }
6198
6199         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
6200                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
6201                            params->ap_max_inactivity);
6202                 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
6203                             params->ap_max_inactivity);
6204         }
6205
6206         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6207         if (ret) {
6208                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
6209                            ret, strerror(-ret));
6210         } else {
6211                 bss->beacon_set = 1;
6212                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
6213                                 params->short_slot_time, params->ht_opmode,
6214                                 params->isolate, params->basic_rates);
6215         }
6216         return ret;
6217  nla_put_failure:
6218         nlmsg_free(msg);
6219         return -ENOBUFS;
6220 }
6221
6222
6223 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
6224                                        struct hostapd_freq_params *freq)
6225 {
6226         struct wpa_driver_nl80211_data *drv = bss->drv;
6227         struct nl_msg *msg;
6228         int ret;
6229
6230         wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d,"
6231                    " bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
6232                    freq->freq, freq->ht_enabled, freq->vht_enabled,
6233                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
6234         msg = nlmsg_alloc();
6235         if (!msg)
6236                 return -1;
6237
6238         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6239
6240         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6241         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
6242         if (freq->vht_enabled) {
6243                 switch (freq->bandwidth) {
6244                 case 20:
6245                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
6246                                     NL80211_CHAN_WIDTH_20);
6247                         break;
6248                 case 40:
6249                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
6250                                     NL80211_CHAN_WIDTH_40);
6251                         break;
6252                 case 80:
6253                         if (freq->center_freq2)
6254                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
6255                                             NL80211_CHAN_WIDTH_80P80);
6256                         else
6257                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
6258                                             NL80211_CHAN_WIDTH_80);
6259                         break;
6260                 case 160:
6261                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
6262                                     NL80211_CHAN_WIDTH_160);
6263                         break;
6264                 default:
6265                         return -1;
6266                 }
6267                 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
6268                 if (freq->center_freq2)
6269                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
6270                                     freq->center_freq2);
6271         } else if (freq->ht_enabled) {
6272                 switch (freq->sec_channel_offset) {
6273                 case -1:
6274                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
6275                                     NL80211_CHAN_HT40MINUS);
6276                         break;
6277                 case 1:
6278                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
6279                                     NL80211_CHAN_HT40PLUS);
6280                         break;
6281                 default:
6282                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
6283                                     NL80211_CHAN_HT20);
6284                         break;
6285                 }
6286         }
6287
6288         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6289         msg = NULL;
6290         if (ret == 0) {
6291                 bss->freq = freq->freq;
6292                 return 0;
6293         }
6294         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
6295                    "%d (%s)", freq->freq, ret, strerror(-ret));
6296 nla_put_failure:
6297         nlmsg_free(msg);
6298         return -1;
6299 }
6300
6301
6302 static u32 sta_flags_nl80211(int flags)
6303 {
6304         u32 f = 0;
6305
6306         if (flags & WPA_STA_AUTHORIZED)
6307                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
6308         if (flags & WPA_STA_WMM)
6309                 f |= BIT(NL80211_STA_FLAG_WME);
6310         if (flags & WPA_STA_SHORT_PREAMBLE)
6311                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
6312         if (flags & WPA_STA_MFP)
6313                 f |= BIT(NL80211_STA_FLAG_MFP);
6314         if (flags & WPA_STA_TDLS_PEER)
6315                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
6316
6317         return f;
6318 }
6319
6320
6321 static int wpa_driver_nl80211_sta_add(void *priv,
6322                                       struct hostapd_sta_add_params *params)
6323 {
6324         struct i802_bss *bss = priv;
6325         struct wpa_driver_nl80211_data *drv = bss->drv;
6326         struct nl_msg *msg;
6327         struct nl80211_sta_flag_update upd;
6328         int ret = -ENOBUFS;
6329
6330         if ((params->flags & WPA_STA_TDLS_PEER) &&
6331             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
6332                 return -EOPNOTSUPP;
6333
6334         msg = nlmsg_alloc();
6335         if (!msg)
6336                 return -ENOMEM;
6337
6338         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
6339                    params->set ? "Set" : "Add", MAC2STR(params->addr));
6340         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
6341                     NL80211_CMD_NEW_STATION);
6342
6343         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6344         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
6345         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
6346                 params->supp_rates);
6347         wpa_hexdump(MSG_DEBUG, "  * supported rates", params->supp_rates,
6348                     params->supp_rates_len);
6349         if (!params->set) {
6350                 if (params->aid) {
6351                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
6352                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
6353                 } else {
6354                         /*
6355                          * cfg80211 validates that AID is non-zero, so we have
6356                          * to make this a non-zero value for the TDLS case where
6357                          * a dummy STA entry is used for now.
6358                          */
6359                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
6360                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1);
6361                 }
6362                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
6363                            params->listen_interval);
6364                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
6365                             params->listen_interval);
6366         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
6367                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
6368                 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid);
6369         }
6370         if (params->ht_capabilities) {
6371                 wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
6372                             (u8 *) params->ht_capabilities,
6373                             sizeof(*params->ht_capabilities));
6374                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
6375                         sizeof(*params->ht_capabilities),
6376                         params->ht_capabilities);
6377         }
6378
6379         if (params->vht_capabilities) {
6380                 wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
6381                             (u8 *) params->vht_capabilities,
6382                             sizeof(*params->vht_capabilities));
6383                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY,
6384                         sizeof(*params->vht_capabilities),
6385                         params->vht_capabilities);
6386         }
6387
6388         wpa_printf(MSG_DEBUG, "  * capability=0x%x", params->capability);
6389         NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability);
6390
6391         if (params->ext_capab) {
6392                 wpa_hexdump(MSG_DEBUG, "  * ext_capab",
6393                             params->ext_capab, params->ext_capab_len);
6394                 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
6395                         params->ext_capab_len, params->ext_capab);
6396         }
6397
6398         os_memset(&upd, 0, sizeof(upd));
6399         upd.mask = sta_flags_nl80211(params->flags);
6400         upd.set = upd.mask;
6401         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
6402                    upd.set, upd.mask);
6403         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
6404
6405         if (params->flags & WPA_STA_WMM) {
6406                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
6407
6408                 if (!wme)
6409                         goto nla_put_failure;
6410
6411                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
6412                 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES,
6413                                 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
6414                 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP,
6415                                 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
6416                                 WMM_QOSINFO_STA_SP_MASK);
6417                 nla_nest_end(msg, wme);
6418         }
6419
6420         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6421         msg = NULL;
6422         if (ret)
6423                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
6424                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
6425                            strerror(-ret));
6426         if (ret == -EEXIST)
6427                 ret = 0;
6428  nla_put_failure:
6429         nlmsg_free(msg);
6430         return ret;
6431 }
6432
6433
6434 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr)
6435 {
6436         struct wpa_driver_nl80211_data *drv = bss->drv;
6437         struct nl_msg *msg;
6438         int ret;
6439
6440         msg = nlmsg_alloc();
6441         if (!msg)
6442                 return -ENOMEM;
6443
6444         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
6445
6446         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6447                     if_nametoindex(bss->ifname));
6448         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6449
6450         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6451         if (ret == -ENOENT)
6452                 return 0;
6453         return ret;
6454  nla_put_failure:
6455         nlmsg_free(msg);
6456         return -ENOBUFS;
6457 }
6458
6459
6460 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
6461                                  int ifidx)
6462 {
6463         struct nl_msg *msg;
6464
6465         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
6466
6467         /* stop listening for EAPOL on this interface */
6468         del_ifidx(drv, ifidx);
6469
6470         msg = nlmsg_alloc();
6471         if (!msg)
6472                 goto nla_put_failure;
6473
6474         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
6475         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
6476
6477         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6478                 return;
6479         msg = NULL;
6480  nla_put_failure:
6481         nlmsg_free(msg);
6482         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
6483 }
6484
6485
6486 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
6487 {
6488         switch (mode) {
6489         case NL80211_IFTYPE_ADHOC:
6490                 return "ADHOC";
6491         case NL80211_IFTYPE_STATION:
6492                 return "STATION";
6493         case NL80211_IFTYPE_AP:
6494                 return "AP";
6495         case NL80211_IFTYPE_AP_VLAN:
6496                 return "AP_VLAN";
6497         case NL80211_IFTYPE_WDS:
6498                 return "WDS";
6499         case NL80211_IFTYPE_MONITOR:
6500                 return "MONITOR";
6501         case NL80211_IFTYPE_MESH_POINT:
6502                 return "MESH_POINT";
6503         case NL80211_IFTYPE_P2P_CLIENT:
6504                 return "P2P_CLIENT";
6505         case NL80211_IFTYPE_P2P_GO:
6506                 return "P2P_GO";
6507         default:
6508                 return "unknown";
6509         }
6510 }
6511
6512
6513 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
6514                                      const char *ifname,
6515                                      enum nl80211_iftype iftype,
6516                                      const u8 *addr, int wds)
6517 {
6518         struct nl_msg *msg;
6519         int ifidx;
6520         int ret = -ENOBUFS;
6521
6522         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
6523                    iftype, nl80211_iftype_str(iftype));
6524
6525         msg = nlmsg_alloc();
6526         if (!msg)
6527                 return -1;
6528
6529         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
6530         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6531         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
6532         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
6533
6534         if (iftype == NL80211_IFTYPE_MONITOR) {
6535                 struct nlattr *flags;
6536
6537                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
6538                 if (!flags)
6539                         goto nla_put_failure;
6540
6541                 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES);
6542
6543                 nla_nest_end(msg, flags);
6544         } else if (wds) {
6545                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
6546         }
6547
6548         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6549         msg = NULL;
6550         if (ret) {
6551  nla_put_failure:
6552                 nlmsg_free(msg);
6553                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
6554                            ifname, ret, strerror(-ret));
6555                 return ret;
6556         }
6557
6558         ifidx = if_nametoindex(ifname);
6559         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
6560                    ifname, ifidx);
6561
6562         if (ifidx <= 0)
6563                 return -1;
6564
6565         /* start listening for EAPOL on this interface */
6566         add_ifidx(drv, ifidx);
6567
6568         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
6569             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
6570                 nl80211_remove_iface(drv, ifidx);
6571                 return -1;
6572         }
6573
6574         return ifidx;
6575 }
6576
6577
6578 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
6579                                 const char *ifname, enum nl80211_iftype iftype,
6580                                 const u8 *addr, int wds)
6581 {
6582         int ret;
6583
6584         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
6585
6586         /* if error occurred and interface exists already */
6587         if (ret == -ENFILE && if_nametoindex(ifname)) {
6588                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
6589
6590                 /* Try to remove the interface that was already there. */
6591                 nl80211_remove_iface(drv, if_nametoindex(ifname));
6592
6593                 /* Try to create the interface again */
6594                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
6595                                                 wds);
6596         }
6597
6598         if (ret >= 0 && is_p2p_interface(iftype))
6599                 nl80211_disable_11b_rates(drv, ret, 1);
6600
6601         return ret;
6602 }
6603
6604
6605 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
6606 {
6607         struct ieee80211_hdr *hdr;
6608         u16 fc;
6609         union wpa_event_data event;
6610
6611         hdr = (struct ieee80211_hdr *) buf;
6612         fc = le_to_host16(hdr->frame_control);
6613
6614         os_memset(&event, 0, sizeof(event));
6615         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
6616         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
6617         event.tx_status.dst = hdr->addr1;
6618         event.tx_status.data = buf;
6619         event.tx_status.data_len = len;
6620         event.tx_status.ack = ok;
6621         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
6622 }
6623
6624
6625 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
6626                              u8 *buf, size_t len)
6627 {
6628         struct ieee80211_hdr *hdr = (void *)buf;
6629         u16 fc;
6630         union wpa_event_data event;
6631
6632         if (len < sizeof(*hdr))
6633                 return;
6634
6635         fc = le_to_host16(hdr->frame_control);
6636
6637         os_memset(&event, 0, sizeof(event));
6638         event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
6639         event.rx_from_unknown.addr = hdr->addr2;
6640         event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
6641                 (WLAN_FC_FROMDS | WLAN_FC_TODS);
6642         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
6643 }
6644
6645
6646 static void handle_frame(struct wpa_driver_nl80211_data *drv,
6647                          u8 *buf, size_t len, int datarate, int ssi_signal)
6648 {
6649         struct ieee80211_hdr *hdr;
6650         u16 fc;
6651         union wpa_event_data event;
6652
6653         hdr = (struct ieee80211_hdr *) buf;
6654         fc = le_to_host16(hdr->frame_control);
6655
6656         switch (WLAN_FC_GET_TYPE(fc)) {
6657         case WLAN_FC_TYPE_MGMT:
6658                 os_memset(&event, 0, sizeof(event));
6659                 event.rx_mgmt.frame = buf;
6660                 event.rx_mgmt.frame_len = len;
6661                 event.rx_mgmt.datarate = datarate;
6662                 event.rx_mgmt.ssi_signal = ssi_signal;
6663                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
6664                 break;
6665         case WLAN_FC_TYPE_CTRL:
6666                 /* can only get here with PS-Poll frames */
6667                 wpa_printf(MSG_DEBUG, "CTRL");
6668                 from_unknown_sta(drv, buf, len);
6669                 break;
6670         case WLAN_FC_TYPE_DATA:
6671                 from_unknown_sta(drv, buf, len);
6672                 break;
6673         }
6674 }
6675
6676
6677 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
6678 {
6679         struct wpa_driver_nl80211_data *drv = eloop_ctx;
6680         int len;
6681         unsigned char buf[3000];
6682         struct ieee80211_radiotap_iterator iter;
6683         int ret;
6684         int datarate = 0, ssi_signal = 0;
6685         int injected = 0, failed = 0, rxflags = 0;
6686
6687         len = recv(sock, buf, sizeof(buf), 0);
6688         if (len < 0) {
6689                 perror("recv");
6690                 return;
6691         }
6692
6693         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
6694                 printf("received invalid radiotap frame\n");
6695                 return;
6696         }
6697
6698         while (1) {
6699                 ret = ieee80211_radiotap_iterator_next(&iter);
6700                 if (ret == -ENOENT)
6701                         break;
6702                 if (ret) {
6703                         printf("received invalid radiotap frame (%d)\n", ret);
6704                         return;
6705                 }
6706                 switch (iter.this_arg_index) {
6707                 case IEEE80211_RADIOTAP_FLAGS:
6708                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
6709                                 len -= 4;
6710                         break;
6711                 case IEEE80211_RADIOTAP_RX_FLAGS:
6712                         rxflags = 1;
6713                         break;
6714                 case IEEE80211_RADIOTAP_TX_FLAGS:
6715                         injected = 1;
6716                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
6717                                         IEEE80211_RADIOTAP_F_TX_FAIL;
6718                         break;
6719                 case IEEE80211_RADIOTAP_DATA_RETRIES:
6720                         break;
6721                 case IEEE80211_RADIOTAP_CHANNEL:
6722                         /* TODO: convert from freq/flags to channel number */
6723                         break;
6724                 case IEEE80211_RADIOTAP_RATE:
6725                         datarate = *iter.this_arg * 5;
6726                         break;
6727                 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
6728                         ssi_signal = (s8) *iter.this_arg;
6729                         break;
6730                 }
6731         }
6732
6733         if (rxflags && injected)
6734                 return;
6735
6736         if (!injected)
6737                 handle_frame(drv, buf + iter.max_length,
6738                              len - iter.max_length, datarate, ssi_signal);
6739         else
6740                 handle_tx_callback(drv->ctx, buf + iter.max_length,
6741                                    len - iter.max_length, !failed);
6742 }
6743
6744
6745 /*
6746  * we post-process the filter code later and rewrite
6747  * this to the offset to the last instruction
6748  */
6749 #define PASS    0xFF
6750 #define FAIL    0xFE
6751
6752 static struct sock_filter msock_filter_insns[] = {
6753         /*
6754          * do a little-endian load of the radiotap length field
6755          */
6756         /* load lower byte into A */
6757         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
6758         /* put it into X (== index register) */
6759         BPF_STMT(BPF_MISC| BPF_TAX, 0),
6760         /* load upper byte into A */
6761         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
6762         /* left-shift it by 8 */
6763         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
6764         /* or with X */
6765         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
6766         /* put result into X */
6767         BPF_STMT(BPF_MISC| BPF_TAX, 0),
6768
6769         /*
6770          * Allow management frames through, this also gives us those
6771          * management frames that we sent ourselves with status
6772          */
6773         /* load the lower byte of the IEEE 802.11 frame control field */
6774         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
6775         /* mask off frame type and version */
6776         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
6777         /* accept frame if it's both 0, fall through otherwise */
6778         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
6779
6780         /*
6781          * TODO: add a bit to radiotap RX flags that indicates
6782          * that the sending station is not associated, then
6783          * add a filter here that filters on our DA and that flag
6784          * to allow us to deauth frames to that bad station.
6785          *
6786          * For now allow all To DS data frames through.
6787          */
6788         /* load the IEEE 802.11 frame control field */
6789         BPF_STMT(BPF_LD  | BPF_H | BPF_IND, 0),
6790         /* mask off frame type, version and DS status */
6791         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
6792         /* accept frame if version 0, type 2 and To DS, fall through otherwise
6793          */
6794         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
6795
6796 #if 0
6797         /*
6798          * drop non-data frames
6799          */
6800         /* load the lower byte of the frame control field */
6801         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
6802         /* mask off QoS bit */
6803         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
6804         /* drop non-data frames */
6805         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
6806 #endif
6807         /* load the upper byte of the frame control field */
6808         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
6809         /* mask off toDS/fromDS */
6810         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
6811         /* accept WDS frames */
6812         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
6813
6814         /*
6815          * add header length to index
6816          */
6817         /* load the lower byte of the frame control field */
6818         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
6819         /* mask off QoS bit */
6820         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
6821         /* right shift it by 6 to give 0 or 2 */
6822         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
6823         /* add data frame header length */
6824         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
6825         /* add index, was start of 802.11 header */
6826         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
6827         /* move to index, now start of LL header */
6828         BPF_STMT(BPF_MISC | BPF_TAX, 0),
6829
6830         /*
6831          * Accept empty data frames, we use those for
6832          * polling activity.
6833          */
6834         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
6835         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
6836
6837         /*
6838          * Accept EAPOL frames
6839          */
6840         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
6841         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
6842         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
6843         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
6844
6845         /* keep these last two statements or change the code below */
6846         /* return 0 == "DROP" */
6847         BPF_STMT(BPF_RET | BPF_K, 0),
6848         /* return ~0 == "keep all" */
6849         BPF_STMT(BPF_RET | BPF_K, ~0),
6850 };
6851
6852 static struct sock_fprog msock_filter = {
6853         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
6854         .filter = msock_filter_insns,
6855 };
6856
6857
6858 static int add_monitor_filter(int s)
6859 {
6860         int idx;
6861
6862         /* rewrite all PASS/FAIL jump offsets */
6863         for (idx = 0; idx < msock_filter.len; idx++) {
6864                 struct sock_filter *insn = &msock_filter_insns[idx];
6865
6866                 if (BPF_CLASS(insn->code) == BPF_JMP) {
6867                         if (insn->code == (BPF_JMP|BPF_JA)) {
6868                                 if (insn->k == PASS)
6869                                         insn->k = msock_filter.len - idx - 2;
6870                                 else if (insn->k == FAIL)
6871                                         insn->k = msock_filter.len - idx - 3;
6872                         }
6873
6874                         if (insn->jt == PASS)
6875                                 insn->jt = msock_filter.len - idx - 2;
6876                         else if (insn->jt == FAIL)
6877                                 insn->jt = msock_filter.len - idx - 3;
6878
6879                         if (insn->jf == PASS)
6880                                 insn->jf = msock_filter.len - idx - 2;
6881                         else if (insn->jf == FAIL)
6882                                 insn->jf = msock_filter.len - idx - 3;
6883                 }
6884         }
6885
6886         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
6887                        &msock_filter, sizeof(msock_filter))) {
6888                 perror("SO_ATTACH_FILTER");
6889                 return -1;
6890         }
6891
6892         return 0;
6893 }
6894
6895
6896 static void nl80211_remove_monitor_interface(
6897         struct wpa_driver_nl80211_data *drv)
6898 {
6899         drv->monitor_refcount--;
6900         if (drv->monitor_refcount > 0)
6901                 return;
6902
6903         if (drv->monitor_ifidx >= 0) {
6904                 nl80211_remove_iface(drv, drv->monitor_ifidx);
6905                 drv->monitor_ifidx = -1;
6906         }
6907         if (drv->monitor_sock >= 0) {
6908                 eloop_unregister_read_sock(drv->monitor_sock);
6909                 close(drv->monitor_sock);
6910                 drv->monitor_sock = -1;
6911         }
6912 }
6913
6914
6915 static int
6916 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
6917 {
6918         char buf[IFNAMSIZ];
6919         struct sockaddr_ll ll;
6920         int optval;
6921         socklen_t optlen;
6922
6923         if (drv->monitor_ifidx >= 0) {
6924                 drv->monitor_refcount++;
6925                 return 0;
6926         }
6927
6928         if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
6929                 /*
6930                  * P2P interface name is of the format p2p-%s-%d. For monitor
6931                  * interface name corresponding to P2P GO, replace "p2p-" with
6932                  * "mon-" to retain the same interface name length and to
6933                  * indicate that it is a monitor interface.
6934                  */
6935                 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
6936         } else {
6937                 /* Non-P2P interface with AP functionality. */
6938                 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
6939         }
6940
6941         buf[IFNAMSIZ - 1] = '\0';
6942
6943         drv->monitor_ifidx =
6944                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
6945                                      0);
6946
6947         if (drv->monitor_ifidx == -EOPNOTSUPP) {
6948                 /*
6949                  * This is backward compatibility for a few versions of
6950                  * the kernel only that didn't advertise the right
6951                  * attributes for the only driver that then supported
6952                  * AP mode w/o monitor -- ath6kl.
6953                  */
6954                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
6955                            "monitor interface type - try to run without it");
6956                 drv->device_ap_sme = 1;
6957         }
6958
6959         if (drv->monitor_ifidx < 0)
6960                 return -1;
6961
6962         if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
6963                 goto error;
6964
6965         memset(&ll, 0, sizeof(ll));
6966         ll.sll_family = AF_PACKET;
6967         ll.sll_ifindex = drv->monitor_ifidx;
6968         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
6969         if (drv->monitor_sock < 0) {
6970                 perror("socket[PF_PACKET,SOCK_RAW]");
6971                 goto error;
6972         }
6973
6974         if (add_monitor_filter(drv->monitor_sock)) {
6975                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
6976                            "interface; do filtering in user space");
6977                 /* This works, but will cost in performance. */
6978         }
6979
6980         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
6981                 perror("monitor socket bind");
6982                 goto error;
6983         }
6984
6985         optlen = sizeof(optval);
6986         optval = 20;
6987         if (setsockopt
6988             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
6989                 perror("Failed to set socket priority");
6990                 goto error;
6991         }
6992
6993         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
6994                                      drv, NULL)) {
6995                 printf("Could not register monitor read socket\n");
6996                 goto error;
6997         }
6998
6999         return 0;
7000  error:
7001         nl80211_remove_monitor_interface(drv);
7002         return -1;
7003 }
7004
7005
7006 static int nl80211_setup_ap(struct i802_bss *bss)
7007 {
7008         struct wpa_driver_nl80211_data *drv = bss->drv;
7009
7010         wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d "
7011                    "use_monitor=%d", drv->device_ap_sme, drv->use_monitor);
7012
7013         /*
7014          * Disable Probe Request reporting unless we need it in this way for
7015          * devices that include the AP SME, in the other case (unless using
7016          * monitor iface) we'll get it through the nl_mgmt socket instead.
7017          */
7018         if (!drv->device_ap_sme)
7019                 wpa_driver_nl80211_probe_req_report(bss, 0);
7020
7021         if (!drv->device_ap_sme && !drv->use_monitor)
7022                 if (nl80211_mgmt_subscribe_ap(bss))
7023                         return -1;
7024
7025         if (drv->device_ap_sme && !drv->use_monitor)
7026                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
7027                         return -1;
7028
7029         if (!drv->device_ap_sme && drv->use_monitor &&
7030             nl80211_create_monitor_interface(drv) &&
7031             !drv->device_ap_sme)
7032                 return -1;
7033
7034         if (drv->device_ap_sme &&
7035             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
7036                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
7037                            "Probe Request frame reporting in AP mode");
7038                 /* Try to survive without this */
7039         }
7040
7041         return 0;
7042 }
7043
7044
7045 static void nl80211_teardown_ap(struct i802_bss *bss)
7046 {
7047         struct wpa_driver_nl80211_data *drv = bss->drv;
7048
7049         if (drv->device_ap_sme) {
7050                 wpa_driver_nl80211_probe_req_report(bss, 0);
7051                 if (!drv->use_monitor)
7052                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
7053         } else if (drv->use_monitor)
7054                 nl80211_remove_monitor_interface(drv);
7055         else
7056                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
7057
7058         bss->beacon_set = 0;
7059 }
7060
7061
7062 static int nl80211_send_eapol_data(struct i802_bss *bss,
7063                                    const u8 *addr, const u8 *data,
7064                                    size_t data_len)
7065 {
7066         struct sockaddr_ll ll;
7067         int ret;
7068
7069         if (bss->drv->eapol_tx_sock < 0) {
7070                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
7071                 return -1;
7072         }
7073
7074         os_memset(&ll, 0, sizeof(ll));
7075         ll.sll_family = AF_PACKET;
7076         ll.sll_ifindex = bss->ifindex;
7077         ll.sll_protocol = htons(ETH_P_PAE);
7078         ll.sll_halen = ETH_ALEN;
7079         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
7080         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
7081                      (struct sockaddr *) &ll, sizeof(ll));
7082         if (ret < 0)
7083                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
7084                            strerror(errno));
7085
7086         return ret;
7087 }
7088
7089
7090 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
7091
7092 static int wpa_driver_nl80211_hapd_send_eapol(
7093         void *priv, const u8 *addr, const u8 *data,
7094         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
7095 {
7096         struct i802_bss *bss = priv;
7097         struct wpa_driver_nl80211_data *drv = bss->drv;
7098         struct ieee80211_hdr *hdr;
7099         size_t len;
7100         u8 *pos;
7101         int res;
7102         int qos = flags & WPA_STA_WMM;
7103
7104         if (drv->device_ap_sme || !drv->use_monitor)
7105                 return nl80211_send_eapol_data(bss, addr, data, data_len);
7106
7107         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
7108                 data_len;
7109         hdr = os_zalloc(len);
7110         if (hdr == NULL) {
7111                 printf("malloc() failed for i802_send_data(len=%lu)\n",
7112                        (unsigned long) len);
7113                 return -1;
7114         }
7115
7116         hdr->frame_control =
7117                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
7118         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
7119         if (encrypt)
7120                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
7121         if (qos) {
7122                 hdr->frame_control |=
7123                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
7124         }
7125
7126         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7127         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7128         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7129         pos = (u8 *) (hdr + 1);
7130
7131         if (qos) {
7132                 /* Set highest priority in QoS header */
7133                 pos[0] = 7;
7134                 pos[1] = 0;
7135                 pos += 2;
7136         }
7137
7138         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
7139         pos += sizeof(rfc1042_header);
7140         WPA_PUT_BE16(pos, ETH_P_PAE);
7141         pos += 2;
7142         memcpy(pos, data, data_len);
7143
7144         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
7145                                             0, 0, 0, 0);
7146         if (res < 0) {
7147                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
7148                            "failed: %d (%s)",
7149                            (unsigned long) len, errno, strerror(errno));
7150         }
7151         os_free(hdr);
7152
7153         return res;
7154 }
7155
7156
7157 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
7158                                             int total_flags,
7159                                             int flags_or, int flags_and)
7160 {
7161         struct i802_bss *bss = priv;
7162         struct wpa_driver_nl80211_data *drv = bss->drv;
7163         struct nl_msg *msg;
7164         struct nlattr *flags;
7165         struct nl80211_sta_flag_update upd;
7166
7167         msg = nlmsg_alloc();
7168         if (!msg)
7169                 return -ENOMEM;
7170
7171         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7172
7173         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7174                     if_nametoindex(bss->ifname));
7175         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7176
7177         /*
7178          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
7179          * can be removed eventually.
7180          */
7181         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
7182         if (!flags)
7183                 goto nla_put_failure;
7184         if (total_flags & WPA_STA_AUTHORIZED)
7185                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED);
7186
7187         if (total_flags & WPA_STA_WMM)
7188                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME);
7189
7190         if (total_flags & WPA_STA_SHORT_PREAMBLE)
7191                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE);
7192
7193         if (total_flags & WPA_STA_MFP)
7194                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP);
7195
7196         if (total_flags & WPA_STA_TDLS_PEER)
7197                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER);
7198
7199         nla_nest_end(msg, flags);
7200
7201         os_memset(&upd, 0, sizeof(upd));
7202         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
7203         upd.set = sta_flags_nl80211(flags_or);
7204         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7205
7206         return send_and_recv_msgs(drv, msg, NULL, NULL);
7207  nla_put_failure:
7208         nlmsg_free(msg);
7209         return -ENOBUFS;
7210 }
7211
7212
7213 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
7214                                  struct wpa_driver_associate_params *params)
7215 {
7216         enum nl80211_iftype nlmode, old_mode;
7217         struct hostapd_freq_params freq = {
7218                 .freq = params->freq,
7219         };
7220
7221         if (params->p2p) {
7222                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
7223                            "group (GO)");
7224                 nlmode = NL80211_IFTYPE_P2P_GO;
7225         } else
7226                 nlmode = NL80211_IFTYPE_AP;
7227
7228         old_mode = drv->nlmode;
7229         if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode)) {
7230                 nl80211_remove_monitor_interface(drv);
7231                 return -1;
7232         }
7233
7234         if (wpa_driver_nl80211_set_freq(&drv->first_bss, &freq)) {
7235                 if (old_mode != nlmode)
7236                         wpa_driver_nl80211_set_mode(&drv->first_bss, old_mode);
7237                 nl80211_remove_monitor_interface(drv);
7238                 return -1;
7239         }
7240
7241         return 0;
7242 }
7243
7244
7245 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
7246 {
7247         struct nl_msg *msg;
7248         int ret = -1;
7249
7250         msg = nlmsg_alloc();
7251         if (!msg)
7252                 return -1;
7253
7254         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
7255         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7256         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7257         msg = NULL;
7258         if (ret) {
7259                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
7260                            "(%s)", ret, strerror(-ret));
7261                 goto nla_put_failure;
7262         }
7263
7264         ret = 0;
7265         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
7266
7267 nla_put_failure:
7268         nlmsg_free(msg);
7269         return ret;
7270 }
7271
7272
7273 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
7274                                    struct wpa_driver_associate_params *params)
7275 {
7276         struct nl_msg *msg;
7277         int ret = -1;
7278         int count = 0;
7279
7280         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
7281
7282         if (wpa_driver_nl80211_set_mode(&drv->first_bss,
7283                                         NL80211_IFTYPE_ADHOC)) {
7284                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
7285                            "IBSS mode");
7286                 return -1;
7287         }
7288
7289 retry:
7290         msg = nlmsg_alloc();
7291         if (!msg)
7292                 return -1;
7293
7294         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
7295         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7296
7297         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
7298                 goto nla_put_failure;
7299
7300         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
7301                           params->ssid, params->ssid_len);
7302         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
7303                 params->ssid);
7304         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
7305         drv->ssid_len = params->ssid_len;
7306
7307         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
7308         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
7309
7310         ret = nl80211_set_conn_keys(params, msg);
7311         if (ret)
7312                 goto nla_put_failure;
7313
7314         if (params->bssid && params->fixed_bssid) {
7315                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
7316                            MAC2STR(params->bssid));
7317                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
7318         }
7319
7320         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
7321             params->key_mgmt_suite == KEY_MGMT_PSK ||
7322             params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 ||
7323             params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) {
7324                 wpa_printf(MSG_DEBUG, "  * control port");
7325                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
7326         }
7327
7328         if (params->wpa_ie) {
7329                 wpa_hexdump(MSG_DEBUG,
7330                             "  * Extra IEs for Beacon/Probe Response frames",
7331                             params->wpa_ie, params->wpa_ie_len);
7332                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
7333                         params->wpa_ie);
7334         }
7335
7336         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7337         msg = NULL;
7338         if (ret) {
7339                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
7340                            ret, strerror(-ret));
7341                 count++;
7342                 if (ret == -EALREADY && count == 1) {
7343                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
7344                                    "forced leave");
7345                         nl80211_leave_ibss(drv);
7346                         nlmsg_free(msg);
7347                         goto retry;
7348                 }
7349
7350                 goto nla_put_failure;
7351         }
7352         ret = 0;
7353         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
7354
7355 nla_put_failure:
7356         nlmsg_free(msg);
7357         return ret;
7358 }
7359
7360
7361 static int wpa_driver_nl80211_try_connect(
7362         struct wpa_driver_nl80211_data *drv,
7363         struct wpa_driver_associate_params *params)
7364 {
7365         struct nl_msg *msg;
7366         enum nl80211_auth_type type;
7367         int ret = 0;
7368         int algs;
7369
7370         msg = nlmsg_alloc();
7371         if (!msg)
7372                 return -1;
7373
7374         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
7375         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
7376
7377         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7378         if (params->bssid) {
7379                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
7380                            MAC2STR(params->bssid));
7381                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
7382         }
7383         if (params->freq) {
7384                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
7385                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
7386         }
7387         if (params->bg_scan_period >= 0) {
7388                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
7389                            params->bg_scan_period);
7390                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
7391                             params->bg_scan_period);
7392         }
7393         if (params->ssid) {
7394                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
7395                                   params->ssid, params->ssid_len);
7396                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
7397                         params->ssid);
7398                 if (params->ssid_len > sizeof(drv->ssid))
7399                         goto nla_put_failure;
7400                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
7401                 drv->ssid_len = params->ssid_len;
7402         }
7403         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
7404         if (params->wpa_ie)
7405                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
7406                         params->wpa_ie);
7407
7408         algs = 0;
7409         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
7410                 algs++;
7411         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
7412                 algs++;
7413         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
7414                 algs++;
7415         if (algs > 1) {
7416                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
7417                            "selection");
7418                 goto skip_auth_type;
7419         }
7420
7421         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
7422                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
7423         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
7424                 type = NL80211_AUTHTYPE_SHARED_KEY;
7425         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
7426                 type = NL80211_AUTHTYPE_NETWORK_EAP;
7427         else if (params->auth_alg & WPA_AUTH_ALG_FT)
7428                 type = NL80211_AUTHTYPE_FT;
7429         else
7430                 goto nla_put_failure;
7431
7432         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
7433         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
7434
7435 skip_auth_type:
7436         if (params->wpa_proto) {
7437                 enum nl80211_wpa_versions ver = 0;
7438
7439                 if (params->wpa_proto & WPA_PROTO_WPA)
7440                         ver |= NL80211_WPA_VERSION_1;
7441                 if (params->wpa_proto & WPA_PROTO_RSN)
7442                         ver |= NL80211_WPA_VERSION_2;
7443
7444                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
7445                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
7446         }
7447
7448         if (params->pairwise_suite != CIPHER_NONE) {
7449                 int cipher;
7450
7451                 switch (params->pairwise_suite) {
7452                 case CIPHER_SMS4:
7453                         cipher = WLAN_CIPHER_SUITE_SMS4;
7454                         break;
7455                 case CIPHER_WEP40:
7456                         cipher = WLAN_CIPHER_SUITE_WEP40;
7457                         break;
7458                 case CIPHER_WEP104:
7459                         cipher = WLAN_CIPHER_SUITE_WEP104;
7460                         break;
7461                 case CIPHER_CCMP:
7462                         cipher = WLAN_CIPHER_SUITE_CCMP;
7463                         break;
7464                 case CIPHER_GCMP:
7465                         cipher = WLAN_CIPHER_SUITE_GCMP;
7466                         break;
7467                 case CIPHER_TKIP:
7468                 default:
7469                         cipher = WLAN_CIPHER_SUITE_TKIP;
7470                         break;
7471                 }
7472                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
7473         }
7474
7475         if (params->group_suite != CIPHER_NONE) {
7476                 int cipher;
7477
7478                 switch (params->group_suite) {
7479                 case CIPHER_SMS4:
7480                         cipher = WLAN_CIPHER_SUITE_SMS4;
7481                         break;
7482                 case CIPHER_WEP40:
7483                         cipher = WLAN_CIPHER_SUITE_WEP40;
7484                         break;
7485                 case CIPHER_WEP104:
7486                         cipher = WLAN_CIPHER_SUITE_WEP104;
7487                         break;
7488                 case CIPHER_CCMP:
7489                         cipher = WLAN_CIPHER_SUITE_CCMP;
7490                         break;
7491                 case CIPHER_GCMP:
7492                         cipher = WLAN_CIPHER_SUITE_GCMP;
7493                         break;
7494                 case CIPHER_TKIP:
7495                 default:
7496                         cipher = WLAN_CIPHER_SUITE_TKIP;
7497                         break;
7498                 }
7499                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
7500         }
7501
7502         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
7503             params->key_mgmt_suite == KEY_MGMT_PSK ||
7504             params->key_mgmt_suite == KEY_MGMT_FT_802_1X ||
7505             params->key_mgmt_suite == KEY_MGMT_FT_PSK ||
7506             params->key_mgmt_suite == KEY_MGMT_CCKM) {
7507                 int mgmt = WLAN_AKM_SUITE_PSK;
7508
7509                 switch (params->key_mgmt_suite) {
7510                 case KEY_MGMT_CCKM:
7511                         mgmt = WLAN_AKM_SUITE_CCKM;
7512                         break;
7513                 case KEY_MGMT_802_1X:
7514                         mgmt = WLAN_AKM_SUITE_8021X;
7515                         break;
7516                 case KEY_MGMT_FT_802_1X:
7517                         mgmt = WLAN_AKM_SUITE_FT_8021X;
7518                         break;
7519                 case KEY_MGMT_FT_PSK:
7520                         mgmt = WLAN_AKM_SUITE_FT_PSK;
7521                         break;
7522                 case KEY_MGMT_PSK:
7523                 default:
7524                         mgmt = WLAN_AKM_SUITE_PSK;
7525                         break;
7526                 }
7527                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
7528         }
7529
7530 #ifdef CONFIG_IEEE80211W
7531         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
7532                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
7533 #endif /* CONFIG_IEEE80211W */
7534
7535         if (params->disable_ht)
7536                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
7537
7538         if (params->htcaps && params->htcaps_mask) {
7539                 int sz = sizeof(struct ieee80211_ht_capabilities);
7540                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
7541                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
7542                         params->htcaps_mask);
7543         }
7544
7545 #ifdef CONFIG_VHT_OVERRIDES
7546         if (params->disable_vht) {
7547                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
7548                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
7549         }
7550
7551         if (params->vhtcaps && params->vhtcaps_mask) {
7552                 int sz = sizeof(struct ieee80211_vht_capabilities);
7553                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
7554                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
7555                         params->vhtcaps_mask);
7556         }
7557 #endif /* CONFIG_VHT_OVERRIDES */
7558
7559         ret = nl80211_set_conn_keys(params, msg);
7560         if (ret)
7561                 goto nla_put_failure;
7562
7563         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7564         msg = NULL;
7565         if (ret) {
7566                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
7567                            "(%s)", ret, strerror(-ret));
7568                 goto nla_put_failure;
7569         }
7570         ret = 0;
7571         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
7572
7573 nla_put_failure:
7574         nlmsg_free(msg);
7575         return ret;
7576
7577 }
7578
7579
7580 static int wpa_driver_nl80211_connect(
7581         struct wpa_driver_nl80211_data *drv,
7582         struct wpa_driver_associate_params *params)
7583 {
7584         int ret = wpa_driver_nl80211_try_connect(drv, params);
7585         if (ret == -EALREADY) {
7586                 /*
7587                  * cfg80211 does not currently accept new connections if
7588                  * we are already connected. As a workaround, force
7589                  * disconnection and try again.
7590                  */
7591                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
7592                            "disconnecting before reassociation "
7593                            "attempt");
7594                 if (wpa_driver_nl80211_disconnect(
7595                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
7596                         return -1;
7597                 /* Ignore the next local disconnect message. */
7598                 drv->ignore_next_local_disconnect = 1;
7599                 ret = wpa_driver_nl80211_try_connect(drv, params);
7600         }
7601         return ret;
7602 }
7603
7604
7605 static int wpa_driver_nl80211_associate(
7606         void *priv, struct wpa_driver_associate_params *params)
7607 {
7608         struct i802_bss *bss = priv;
7609         struct wpa_driver_nl80211_data *drv = bss->drv;
7610         int ret = -1;
7611         struct nl_msg *msg;
7612
7613         if (params->mode == IEEE80211_MODE_AP)
7614                 return wpa_driver_nl80211_ap(drv, params);
7615
7616         if (params->mode == IEEE80211_MODE_IBSS)
7617                 return wpa_driver_nl80211_ibss(drv, params);
7618
7619         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
7620                 enum nl80211_iftype nlmode = params->p2p ?
7621                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
7622
7623                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
7624                         return -1;
7625                 return wpa_driver_nl80211_connect(drv, params);
7626         }
7627
7628         nl80211_mark_disconnected(drv);
7629
7630         msg = nlmsg_alloc();
7631         if (!msg)
7632                 return -1;
7633
7634         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
7635                    drv->ifindex);
7636         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
7637
7638         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7639         if (params->bssid) {
7640                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
7641                            MAC2STR(params->bssid));
7642                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
7643         }
7644         if (params->freq) {
7645                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
7646                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
7647                 drv->assoc_freq = params->freq;
7648         } else
7649                 drv->assoc_freq = 0;
7650         if (params->bg_scan_period >= 0) {
7651                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
7652                            params->bg_scan_period);
7653                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
7654                             params->bg_scan_period);
7655         }
7656         if (params->ssid) {
7657                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
7658                                   params->ssid, params->ssid_len);
7659                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
7660                         params->ssid);
7661                 if (params->ssid_len > sizeof(drv->ssid))
7662                         goto nla_put_failure;
7663                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
7664                 drv->ssid_len = params->ssid_len;
7665         }
7666         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
7667         if (params->wpa_ie)
7668                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
7669                         params->wpa_ie);
7670
7671         if (params->pairwise_suite != CIPHER_NONE) {
7672                 int cipher;
7673
7674                 switch (params->pairwise_suite) {
7675                 case CIPHER_WEP40:
7676                         cipher = WLAN_CIPHER_SUITE_WEP40;
7677                         break;
7678                 case CIPHER_WEP104:
7679                         cipher = WLAN_CIPHER_SUITE_WEP104;
7680                         break;
7681                 case CIPHER_CCMP:
7682                         cipher = WLAN_CIPHER_SUITE_CCMP;
7683                         break;
7684                 case CIPHER_GCMP:
7685                         cipher = WLAN_CIPHER_SUITE_GCMP;
7686                         break;
7687                 case CIPHER_TKIP:
7688                 default:
7689                         cipher = WLAN_CIPHER_SUITE_TKIP;
7690                         break;
7691                 }
7692                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
7693                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
7694         }
7695
7696         if (params->group_suite != CIPHER_NONE) {
7697                 int cipher;
7698
7699                 switch (params->group_suite) {
7700                 case CIPHER_WEP40:
7701                         cipher = WLAN_CIPHER_SUITE_WEP40;
7702                         break;
7703                 case CIPHER_WEP104:
7704                         cipher = WLAN_CIPHER_SUITE_WEP104;
7705                         break;
7706                 case CIPHER_CCMP:
7707                         cipher = WLAN_CIPHER_SUITE_CCMP;
7708                         break;
7709                 case CIPHER_GCMP:
7710                         cipher = WLAN_CIPHER_SUITE_GCMP;
7711                         break;
7712                 case CIPHER_TKIP:
7713                 default:
7714                         cipher = WLAN_CIPHER_SUITE_TKIP;
7715                         break;
7716                 }
7717                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
7718                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
7719         }
7720
7721 #ifdef CONFIG_IEEE80211W
7722         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
7723                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
7724 #endif /* CONFIG_IEEE80211W */
7725
7726         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
7727
7728         if (params->prev_bssid) {
7729                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
7730                            MAC2STR(params->prev_bssid));
7731                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
7732                         params->prev_bssid);
7733         }
7734
7735         if (params->disable_ht)
7736                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
7737
7738         if (params->htcaps && params->htcaps_mask) {
7739                 int sz = sizeof(struct ieee80211_ht_capabilities);
7740                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
7741                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
7742                         params->htcaps_mask);
7743         }
7744
7745 #ifdef CONFIG_VHT_OVERRIDES
7746         if (params->disable_vht) {
7747                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
7748                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
7749         }
7750
7751         if (params->vhtcaps && params->vhtcaps_mask) {
7752                 int sz = sizeof(struct ieee80211_vht_capabilities);
7753                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
7754                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
7755                         params->vhtcaps_mask);
7756         }
7757 #endif /* CONFIG_VHT_OVERRIDES */
7758
7759         if (params->p2p)
7760                 wpa_printf(MSG_DEBUG, "  * P2P group");
7761
7762         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7763         msg = NULL;
7764         if (ret) {
7765                 wpa_dbg(drv->ctx, MSG_DEBUG,
7766                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
7767                         ret, strerror(-ret));
7768                 nl80211_dump_scan(drv);
7769                 goto nla_put_failure;
7770         }
7771         ret = 0;
7772         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
7773                    "successfully");
7774
7775 nla_put_failure:
7776         nlmsg_free(msg);
7777         return ret;
7778 }
7779
7780
7781 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
7782                             int ifindex, enum nl80211_iftype mode)
7783 {
7784         struct nl_msg *msg;
7785         int ret = -ENOBUFS;
7786
7787         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
7788                    ifindex, mode, nl80211_iftype_str(mode));
7789
7790         msg = nlmsg_alloc();
7791         if (!msg)
7792                 return -ENOMEM;
7793
7794         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
7795         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7796         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
7797
7798         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7799         msg = NULL;
7800         if (!ret)
7801                 return 0;
7802 nla_put_failure:
7803         nlmsg_free(msg);
7804         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
7805                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
7806         return ret;
7807 }
7808
7809
7810 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
7811                                        enum nl80211_iftype nlmode)
7812 {
7813         struct wpa_driver_nl80211_data *drv = bss->drv;
7814         int ret = -1;
7815         int i;
7816         int was_ap = is_ap_interface(drv->nlmode);
7817         int res;
7818
7819         res = nl80211_set_mode(drv, drv->ifindex, nlmode);
7820         if (res == 0) {
7821                 drv->nlmode = nlmode;
7822                 ret = 0;
7823                 goto done;
7824         }
7825
7826         if (res == -ENODEV)
7827                 return -1;
7828
7829         if (nlmode == drv->nlmode) {
7830                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
7831                            "requested mode - ignore error");
7832                 ret = 0;
7833                 goto done; /* Already in the requested mode */
7834         }
7835
7836         /* mac80211 doesn't allow mode changes while the device is up, so
7837          * take the device down, try to set the mode again, and bring the
7838          * device back up.
7839          */
7840         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
7841                    "interface down");
7842         for (i = 0; i < 10; i++) {
7843                 res = linux_set_iface_flags(drv->global->ioctl_sock,
7844                                             bss->ifname, 0);
7845                 if (res == -EACCES || res == -ENODEV)
7846                         break;
7847                 if (res == 0) {
7848                         /* Try to set the mode again while the interface is
7849                          * down */
7850                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
7851                         if (ret == -EACCES)
7852                                 break;
7853                         res = linux_set_iface_flags(drv->global->ioctl_sock,
7854                                                     bss->ifname, 1);
7855                         if (res && !ret)
7856                                 ret = -1;
7857                         else if (ret != -EBUSY)
7858                                 break;
7859                 } else
7860                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
7861                                    "interface down");
7862                 os_sleep(0, 100000);
7863         }
7864
7865         if (!ret) {
7866                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
7867                            "interface is down");
7868                 drv->nlmode = nlmode;
7869                 drv->ignore_if_down_event = 1;
7870         }
7871
7872 done:
7873         if (ret) {
7874                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
7875                            "from %d failed", nlmode, drv->nlmode);
7876                 return ret;
7877         }
7878
7879         if (is_p2p_interface(nlmode))
7880                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
7881         else if (drv->disabled_11b_rates)
7882                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
7883
7884         if (is_ap_interface(nlmode)) {
7885                 nl80211_mgmt_unsubscribe(bss, "start AP");
7886                 /* Setup additional AP mode functionality if needed */
7887                 if (nl80211_setup_ap(bss))
7888                         return -1;
7889         } else if (was_ap) {
7890                 /* Remove additional AP mode functionality */
7891                 nl80211_teardown_ap(bss);
7892         } else {
7893                 nl80211_mgmt_unsubscribe(bss, "mode change");
7894         }
7895
7896         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
7897             nl80211_mgmt_subscribe_non_ap(bss) < 0)
7898                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
7899                            "frame processing - ignore for now");
7900
7901         return 0;
7902 }
7903
7904
7905 static int wpa_driver_nl80211_get_capa(void *priv,
7906                                        struct wpa_driver_capa *capa)
7907 {
7908         struct i802_bss *bss = priv;
7909         struct wpa_driver_nl80211_data *drv = bss->drv;
7910         if (!drv->has_capability)
7911                 return -1;
7912         os_memcpy(capa, &drv->capa, sizeof(*capa));
7913         if (drv->extended_capa && drv->extended_capa_mask) {
7914                 capa->extended_capa = drv->extended_capa;
7915                 capa->extended_capa_mask = drv->extended_capa_mask;
7916                 capa->extended_capa_len = drv->extended_capa_len;
7917         }
7918         return 0;
7919 }
7920
7921
7922 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
7923 {
7924         struct i802_bss *bss = priv;
7925         struct wpa_driver_nl80211_data *drv = bss->drv;
7926
7927         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
7928                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
7929         drv->operstate = state;
7930         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
7931                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
7932 }
7933
7934
7935 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
7936 {
7937         struct i802_bss *bss = priv;
7938         struct wpa_driver_nl80211_data *drv = bss->drv;
7939         struct nl_msg *msg;
7940         struct nl80211_sta_flag_update upd;
7941
7942         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
7943                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
7944
7945         msg = nlmsg_alloc();
7946         if (!msg)
7947                 return -ENOMEM;
7948
7949         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7950
7951         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7952                     if_nametoindex(bss->ifname));
7953         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
7954
7955         os_memset(&upd, 0, sizeof(upd));
7956         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
7957         if (authorized)
7958                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
7959         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7960
7961         return send_and_recv_msgs(drv, msg, NULL, NULL);
7962  nla_put_failure:
7963         nlmsg_free(msg);
7964         return -ENOBUFS;
7965 }
7966
7967
7968 /* Set kernel driver on given frequency (MHz) */
7969 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
7970 {
7971         struct i802_bss *bss = priv;
7972         return wpa_driver_nl80211_set_freq(bss, freq);
7973 }
7974
7975
7976 #if defined(HOSTAPD) || defined(CONFIG_AP)
7977
7978 static inline int min_int(int a, int b)
7979 {
7980         if (a < b)
7981                 return a;
7982         return b;
7983 }
7984
7985
7986 static int get_key_handler(struct nl_msg *msg, void *arg)
7987 {
7988         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7989         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7990
7991         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7992                   genlmsg_attrlen(gnlh, 0), NULL);
7993
7994         /*
7995          * TODO: validate the key index and mac address!
7996          * Otherwise, there's a race condition as soon as
7997          * the kernel starts sending key notifications.
7998          */
7999
8000         if (tb[NL80211_ATTR_KEY_SEQ])
8001                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
8002                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
8003         return NL_SKIP;
8004 }
8005
8006
8007 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
8008                            int idx, u8 *seq)
8009 {
8010         struct i802_bss *bss = priv;
8011         struct wpa_driver_nl80211_data *drv = bss->drv;
8012         struct nl_msg *msg;
8013
8014         msg = nlmsg_alloc();
8015         if (!msg)
8016                 return -ENOMEM;
8017
8018         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
8019
8020         if (addr)
8021                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8022         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
8023         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
8024
8025         memset(seq, 0, 6);
8026
8027         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
8028  nla_put_failure:
8029         nlmsg_free(msg);
8030         return -ENOBUFS;
8031 }
8032
8033
8034 static int i802_set_rts(void *priv, int rts)
8035 {
8036         struct i802_bss *bss = priv;
8037         struct wpa_driver_nl80211_data *drv = bss->drv;
8038         struct nl_msg *msg;
8039         int ret = -ENOBUFS;
8040         u32 val;
8041
8042         msg = nlmsg_alloc();
8043         if (!msg)
8044                 return -ENOMEM;
8045
8046         if (rts >= 2347)
8047                 val = (u32) -1;
8048         else
8049                 val = rts;
8050
8051         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
8052         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8053         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
8054
8055         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8056         msg = NULL;
8057         if (!ret)
8058                 return 0;
8059 nla_put_failure:
8060         nlmsg_free(msg);
8061         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
8062                    "%d (%s)", rts, ret, strerror(-ret));
8063         return ret;
8064 }
8065
8066
8067 static int i802_set_frag(void *priv, int frag)
8068 {
8069         struct i802_bss *bss = priv;
8070         struct wpa_driver_nl80211_data *drv = bss->drv;
8071         struct nl_msg *msg;
8072         int ret = -ENOBUFS;
8073         u32 val;
8074
8075         msg = nlmsg_alloc();
8076         if (!msg)
8077                 return -ENOMEM;
8078
8079         if (frag >= 2346)
8080                 val = (u32) -1;
8081         else
8082                 val = frag;
8083
8084         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
8085         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8086         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
8087
8088         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8089         msg = NULL;
8090         if (!ret)
8091                 return 0;
8092 nla_put_failure:
8093         nlmsg_free(msg);
8094         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
8095                    "%d: %d (%s)", frag, ret, strerror(-ret));
8096         return ret;
8097 }
8098
8099
8100 static int i802_flush(void *priv)
8101 {
8102         struct i802_bss *bss = priv;
8103         struct wpa_driver_nl80211_data *drv = bss->drv;
8104         struct nl_msg *msg;
8105         int res;
8106
8107         msg = nlmsg_alloc();
8108         if (!msg)
8109                 return -1;
8110
8111         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
8112
8113         /*
8114          * XXX: FIX! this needs to flush all VLANs too
8115          */
8116         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
8117                     if_nametoindex(bss->ifname));
8118
8119         res = send_and_recv_msgs(drv, msg, NULL, NULL);
8120         if (res) {
8121                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
8122                            "(%s)", res, strerror(-res));
8123         }
8124         return res;
8125  nla_put_failure:
8126         nlmsg_free(msg);
8127         return -ENOBUFS;
8128 }
8129
8130 #endif /* HOSTAPD || CONFIG_AP */
8131
8132
8133 static int get_sta_handler(struct nl_msg *msg, void *arg)
8134 {
8135         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8136         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8137         struct hostap_sta_driver_data *data = arg;
8138         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
8139         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
8140                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
8141                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
8142                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
8143                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
8144                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
8145                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
8146         };
8147
8148         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8149                   genlmsg_attrlen(gnlh, 0), NULL);
8150
8151         /*
8152          * TODO: validate the interface and mac address!
8153          * Otherwise, there's a race condition as soon as
8154          * the kernel starts sending station notifications.
8155          */
8156
8157         if (!tb[NL80211_ATTR_STA_INFO]) {
8158                 wpa_printf(MSG_DEBUG, "sta stats missing!");
8159                 return NL_SKIP;
8160         }
8161         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
8162                              tb[NL80211_ATTR_STA_INFO],
8163                              stats_policy)) {
8164                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
8165                 return NL_SKIP;
8166         }
8167
8168         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
8169                 data->inactive_msec =
8170                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
8171         if (stats[NL80211_STA_INFO_RX_BYTES])
8172                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
8173         if (stats[NL80211_STA_INFO_TX_BYTES])
8174                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
8175         if (stats[NL80211_STA_INFO_RX_PACKETS])
8176                 data->rx_packets =
8177                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
8178         if (stats[NL80211_STA_INFO_TX_PACKETS])
8179                 data->tx_packets =
8180                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
8181         if (stats[NL80211_STA_INFO_TX_FAILED])
8182                 data->tx_retry_failed =
8183                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
8184
8185         return NL_SKIP;
8186 }
8187
8188 static int i802_read_sta_data(struct i802_bss *bss,
8189                               struct hostap_sta_driver_data *data,
8190                               const u8 *addr)
8191 {
8192         struct wpa_driver_nl80211_data *drv = bss->drv;
8193         struct nl_msg *msg;
8194
8195         os_memset(data, 0, sizeof(*data));
8196         msg = nlmsg_alloc();
8197         if (!msg)
8198                 return -ENOMEM;
8199
8200         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
8201
8202         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8203         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
8204
8205         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
8206  nla_put_failure:
8207         nlmsg_free(msg);
8208         return -ENOBUFS;
8209 }
8210
8211
8212 #if defined(HOSTAPD) || defined(CONFIG_AP)
8213
8214 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
8215                                     int cw_min, int cw_max, int burst_time)
8216 {
8217         struct i802_bss *bss = priv;
8218         struct wpa_driver_nl80211_data *drv = bss->drv;
8219         struct nl_msg *msg;
8220         struct nlattr *txq, *params;
8221
8222         msg = nlmsg_alloc();
8223         if (!msg)
8224                 return -1;
8225
8226         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
8227
8228         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
8229
8230         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
8231         if (!txq)
8232                 goto nla_put_failure;
8233
8234         /* We are only sending parameters for a single TXQ at a time */
8235         params = nla_nest_start(msg, 1);
8236         if (!params)
8237                 goto nla_put_failure;
8238
8239         switch (queue) {
8240         case 0:
8241                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
8242                 break;
8243         case 1:
8244                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
8245                 break;
8246         case 2:
8247                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
8248                 break;
8249         case 3:
8250                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
8251                 break;
8252         }
8253         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
8254          * 32 usec, so need to convert the value here. */
8255         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
8256         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
8257         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
8258         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
8259
8260         nla_nest_end(msg, params);
8261
8262         nla_nest_end(msg, txq);
8263
8264         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
8265                 return 0;
8266         msg = NULL;
8267  nla_put_failure:
8268         nlmsg_free(msg);
8269         return -1;
8270 }
8271
8272
8273 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
8274                              const char *ifname, int vlan_id)
8275 {
8276         struct wpa_driver_nl80211_data *drv = bss->drv;
8277         struct nl_msg *msg;
8278         int ret = -ENOBUFS;
8279
8280         msg = nlmsg_alloc();
8281         if (!msg)
8282                 return -ENOMEM;
8283
8284         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
8285
8286         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
8287                     if_nametoindex(bss->ifname));
8288         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8289         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
8290                     if_nametoindex(ifname));
8291
8292         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8293         msg = NULL;
8294         if (ret < 0) {
8295                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
8296                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
8297                            MAC2STR(addr), ifname, vlan_id, ret,
8298                            strerror(-ret));
8299         }
8300  nla_put_failure:
8301         nlmsg_free(msg);
8302         return ret;
8303 }
8304
8305
8306 static int i802_get_inact_sec(void *priv, const u8 *addr)
8307 {
8308         struct hostap_sta_driver_data data;
8309         int ret;
8310
8311         data.inactive_msec = (unsigned long) -1;
8312         ret = i802_read_sta_data(priv, &data, addr);
8313         if (ret || data.inactive_msec == (unsigned long) -1)
8314                 return -1;
8315         return data.inactive_msec / 1000;
8316 }
8317
8318
8319 static int i802_sta_clear_stats(void *priv, const u8 *addr)
8320 {
8321 #if 0
8322         /* TODO */
8323 #endif
8324         return 0;
8325 }
8326
8327
8328 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
8329                            int reason)
8330 {
8331         struct i802_bss *bss = priv;
8332         struct wpa_driver_nl80211_data *drv = bss->drv;
8333         struct ieee80211_mgmt mgmt;
8334
8335         if (drv->device_ap_sme)
8336                 return wpa_driver_nl80211_sta_remove(bss, addr);
8337
8338         memset(&mgmt, 0, sizeof(mgmt));
8339         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
8340                                           WLAN_FC_STYPE_DEAUTH);
8341         memcpy(mgmt.da, addr, ETH_ALEN);
8342         memcpy(mgmt.sa, own_addr, ETH_ALEN);
8343         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
8344         mgmt.u.deauth.reason_code = host_to_le16(reason);
8345         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
8346                                             IEEE80211_HDRLEN +
8347                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
8348                                             0);
8349 }
8350
8351
8352 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
8353                              int reason)
8354 {
8355         struct i802_bss *bss = priv;
8356         struct wpa_driver_nl80211_data *drv = bss->drv;
8357         struct ieee80211_mgmt mgmt;
8358
8359         if (drv->device_ap_sme)
8360                 return wpa_driver_nl80211_sta_remove(bss, addr);
8361
8362         memset(&mgmt, 0, sizeof(mgmt));
8363         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
8364                                           WLAN_FC_STYPE_DISASSOC);
8365         memcpy(mgmt.da, addr, ETH_ALEN);
8366         memcpy(mgmt.sa, own_addr, ETH_ALEN);
8367         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
8368         mgmt.u.disassoc.reason_code = host_to_le16(reason);
8369         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
8370                                             IEEE80211_HDRLEN +
8371                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
8372                                             0);
8373 }
8374
8375 #endif /* HOSTAPD || CONFIG_AP */
8376
8377 #ifdef HOSTAPD
8378
8379 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
8380 {
8381         int i;
8382         int *old;
8383
8384         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
8385                    ifidx);
8386         for (i = 0; i < drv->num_if_indices; i++) {
8387                 if (drv->if_indices[i] == 0) {
8388                         drv->if_indices[i] = ifidx;
8389                         return;
8390                 }
8391         }
8392
8393         if (drv->if_indices != drv->default_if_indices)
8394                 old = drv->if_indices;
8395         else
8396                 old = NULL;
8397
8398         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
8399                                            sizeof(int));
8400         if (!drv->if_indices) {
8401                 if (!old)
8402                         drv->if_indices = drv->default_if_indices;
8403                 else
8404                         drv->if_indices = old;
8405                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
8406                            "interfaces");
8407                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
8408                 return;
8409         } else if (!old)
8410                 os_memcpy(drv->if_indices, drv->default_if_indices,
8411                           sizeof(drv->default_if_indices));
8412         drv->if_indices[drv->num_if_indices] = ifidx;
8413         drv->num_if_indices++;
8414 }
8415
8416
8417 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
8418 {
8419         int i;
8420
8421         for (i = 0; i < drv->num_if_indices; i++) {
8422                 if (drv->if_indices[i] == ifidx) {
8423                         drv->if_indices[i] = 0;
8424                         break;
8425                 }
8426         }
8427 }
8428
8429
8430 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
8431 {
8432         int i;
8433
8434         for (i = 0; i < drv->num_if_indices; i++)
8435                 if (drv->if_indices[i] == ifidx)
8436                         return 1;
8437
8438         return 0;
8439 }
8440
8441
8442 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
8443                             const char *bridge_ifname)
8444 {
8445         struct i802_bss *bss = priv;
8446         struct wpa_driver_nl80211_data *drv = bss->drv;
8447         char name[IFNAMSIZ + 1];
8448
8449         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
8450         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
8451                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
8452         if (val) {
8453                 if (!if_nametoindex(name)) {
8454                         if (nl80211_create_iface(drv, name,
8455                                                  NL80211_IFTYPE_AP_VLAN,
8456                                                  bss->addr, 1) < 0)
8457                                 return -1;
8458                         if (bridge_ifname &&
8459                             linux_br_add_if(drv->global->ioctl_sock,
8460                                             bridge_ifname, name) < 0)
8461                                 return -1;
8462                 }
8463                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
8464                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
8465                                    "interface %s up", name);
8466                 }
8467                 return i802_set_sta_vlan(priv, addr, name, 0);
8468         } else {
8469                 if (bridge_ifname)
8470                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
8471                                         name);
8472
8473                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
8474                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
8475                                                     name);
8476         }
8477 }
8478
8479
8480 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
8481 {
8482         struct wpa_driver_nl80211_data *drv = eloop_ctx;
8483         struct sockaddr_ll lladdr;
8484         unsigned char buf[3000];
8485         int len;
8486         socklen_t fromlen = sizeof(lladdr);
8487
8488         len = recvfrom(sock, buf, sizeof(buf), 0,
8489                        (struct sockaddr *)&lladdr, &fromlen);
8490         if (len < 0) {
8491                 perror("recv");
8492                 return;
8493         }
8494
8495         if (have_ifidx(drv, lladdr.sll_ifindex))
8496                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
8497 }
8498
8499
8500 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
8501                              struct i802_bss *bss,
8502                              const char *brname, const char *ifname)
8503 {
8504         int ifindex;
8505         char in_br[IFNAMSIZ];
8506
8507         os_strlcpy(bss->brname, brname, IFNAMSIZ);
8508         ifindex = if_nametoindex(brname);
8509         if (ifindex == 0) {
8510                 /*
8511                  * Bridge was configured, but the bridge device does
8512                  * not exist. Try to add it now.
8513                  */
8514                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
8515                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
8516                                    "bridge interface %s: %s",
8517                                    brname, strerror(errno));
8518                         return -1;
8519                 }
8520                 bss->added_bridge = 1;
8521                 add_ifidx(drv, if_nametoindex(brname));
8522         }
8523
8524         if (linux_br_get(in_br, ifname) == 0) {
8525                 if (os_strcmp(in_br, brname) == 0)
8526                         return 0; /* already in the bridge */
8527
8528                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
8529                            "bridge %s", ifname, in_br);
8530                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
8531                     0) {
8532                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
8533                                    "remove interface %s from bridge "
8534                                    "%s: %s",
8535                                    ifname, brname, strerror(errno));
8536                         return -1;
8537                 }
8538         }
8539
8540         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
8541                    ifname, brname);
8542         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
8543                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
8544                            "into bridge %s: %s",
8545                            ifname, brname, strerror(errno));
8546                 return -1;
8547         }
8548         bss->added_if_into_bridge = 1;
8549
8550         return 0;
8551 }
8552
8553
8554 static void *i802_init(struct hostapd_data *hapd,
8555                        struct wpa_init_params *params)
8556 {
8557         struct wpa_driver_nl80211_data *drv;
8558         struct i802_bss *bss;
8559         size_t i;
8560         char brname[IFNAMSIZ];
8561         int ifindex, br_ifindex;
8562         int br_added = 0;
8563
8564         bss = wpa_driver_nl80211_init(hapd, params->ifname,
8565                                       params->global_priv);
8566         if (bss == NULL)
8567                 return NULL;
8568
8569         drv = bss->drv;
8570         drv->nlmode = NL80211_IFTYPE_AP;
8571         drv->eapol_sock = -1;
8572
8573         if (linux_br_get(brname, params->ifname) == 0) {
8574                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
8575                            params->ifname, brname);
8576                 br_ifindex = if_nametoindex(brname);
8577         } else {
8578                 brname[0] = '\0';
8579                 br_ifindex = 0;
8580         }
8581
8582         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
8583         drv->if_indices = drv->default_if_indices;
8584         for (i = 0; i < params->num_bridge; i++) {
8585                 if (params->bridge[i]) {
8586                         ifindex = if_nametoindex(params->bridge[i]);
8587                         if (ifindex)
8588                                 add_ifidx(drv, ifindex);
8589                         if (ifindex == br_ifindex)
8590                                 br_added = 1;
8591                 }
8592         }
8593         if (!br_added && br_ifindex &&
8594             (params->num_bridge == 0 || !params->bridge[0]))
8595                 add_ifidx(drv, br_ifindex);
8596
8597         /* start listening for EAPOL on the default AP interface */
8598         add_ifidx(drv, drv->ifindex);
8599
8600         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
8601                 goto failed;
8602
8603         if (params->bssid) {
8604                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
8605                                        params->bssid))
8606                         goto failed;
8607         }
8608
8609         if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
8610                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
8611                            "into AP mode", bss->ifname);
8612                 goto failed;
8613         }
8614
8615         if (params->num_bridge && params->bridge[0] &&
8616             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
8617                 goto failed;
8618
8619         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
8620                 goto failed;
8621
8622         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
8623         if (drv->eapol_sock < 0) {
8624                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
8625                 goto failed;
8626         }
8627
8628         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
8629         {
8630                 printf("Could not register read socket for eapol\n");
8631                 goto failed;
8632         }
8633
8634         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
8635                                params->own_addr))
8636                 goto failed;
8637
8638         memcpy(bss->addr, params->own_addr, ETH_ALEN);
8639
8640         return bss;
8641
8642 failed:
8643         wpa_driver_nl80211_deinit(bss);
8644         return NULL;
8645 }
8646
8647
8648 static void i802_deinit(void *priv)
8649 {
8650         struct i802_bss *bss = priv;
8651         wpa_driver_nl80211_deinit(bss);
8652 }
8653
8654 #endif /* HOSTAPD */
8655
8656
8657 static enum nl80211_iftype wpa_driver_nl80211_if_type(
8658         enum wpa_driver_if_type type)
8659 {
8660         switch (type) {
8661         case WPA_IF_STATION:
8662                 return NL80211_IFTYPE_STATION;
8663         case WPA_IF_P2P_CLIENT:
8664         case WPA_IF_P2P_GROUP:
8665                 return NL80211_IFTYPE_P2P_CLIENT;
8666         case WPA_IF_AP_VLAN:
8667                 return NL80211_IFTYPE_AP_VLAN;
8668         case WPA_IF_AP_BSS:
8669                 return NL80211_IFTYPE_AP;
8670         case WPA_IF_P2P_GO:
8671                 return NL80211_IFTYPE_P2P_GO;
8672         }
8673         return -1;
8674 }
8675
8676
8677 #ifdef CONFIG_P2P
8678
8679 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
8680 {
8681         struct wpa_driver_nl80211_data *drv;
8682         dl_list_for_each(drv, &global->interfaces,
8683                          struct wpa_driver_nl80211_data, list) {
8684                 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0)
8685                         return 1;
8686         }
8687         return 0;
8688 }
8689
8690
8691 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
8692                                       u8 *new_addr)
8693 {
8694         unsigned int idx;
8695
8696         if (!drv->global)
8697                 return -1;
8698
8699         os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN);
8700         for (idx = 0; idx < 64; idx++) {
8701                 new_addr[0] = drv->first_bss.addr[0] | 0x02;
8702                 new_addr[0] ^= idx << 2;
8703                 if (!nl80211_addr_in_use(drv->global, new_addr))
8704                         break;
8705         }
8706         if (idx == 64)
8707                 return -1;
8708
8709         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
8710                    MACSTR, MAC2STR(new_addr));
8711
8712         return 0;
8713 }
8714
8715 #endif /* CONFIG_P2P */
8716
8717
8718 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
8719                                      const char *ifname, const u8 *addr,
8720                                      void *bss_ctx, void **drv_priv,
8721                                      char *force_ifname, u8 *if_addr,
8722                                      const char *bridge)
8723 {
8724         struct i802_bss *bss = priv;
8725         struct wpa_driver_nl80211_data *drv = bss->drv;
8726         int ifidx;
8727 #ifdef HOSTAPD
8728         struct i802_bss *new_bss = NULL;
8729
8730         if (type == WPA_IF_AP_BSS) {
8731                 new_bss = os_zalloc(sizeof(*new_bss));
8732                 if (new_bss == NULL)
8733                         return -1;
8734         }
8735 #endif /* HOSTAPD */
8736
8737         if (addr)
8738                 os_memcpy(if_addr, addr, ETH_ALEN);
8739         ifidx = nl80211_create_iface(drv, ifname,
8740                                      wpa_driver_nl80211_if_type(type), addr,
8741                                      0);
8742         if (ifidx < 0) {
8743 #ifdef HOSTAPD
8744                 os_free(new_bss);
8745 #endif /* HOSTAPD */
8746                 return -1;
8747         }
8748
8749         if (!addr &&
8750             linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
8751                                if_addr) < 0) {
8752                 nl80211_remove_iface(drv, ifidx);
8753                 return -1;
8754         }
8755
8756 #ifdef CONFIG_P2P
8757         if (!addr &&
8758             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
8759              type == WPA_IF_P2P_GO)) {
8760                 /* Enforce unique P2P Interface Address */
8761                 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
8762
8763                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
8764                                        own_addr) < 0 ||
8765                     linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
8766                                        new_addr) < 0) {
8767                         nl80211_remove_iface(drv, ifidx);
8768                         return -1;
8769                 }
8770                 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
8771                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
8772                                    "for P2P group interface");
8773                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
8774                                 nl80211_remove_iface(drv, ifidx);
8775                                 return -1;
8776                         }
8777                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
8778                                                new_addr) < 0) {
8779                                 nl80211_remove_iface(drv, ifidx);
8780                                 return -1;
8781                         }
8782                 }
8783                 os_memcpy(if_addr, new_addr, ETH_ALEN);
8784         }
8785 #endif /* CONFIG_P2P */
8786
8787 #ifdef HOSTAPD
8788         if (bridge &&
8789             i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
8790                 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
8791                            "interface %s to a bridge %s", ifname, bridge);
8792                 nl80211_remove_iface(drv, ifidx);
8793                 os_free(new_bss);
8794                 return -1;
8795         }
8796
8797         if (type == WPA_IF_AP_BSS) {
8798                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
8799                 {
8800                         nl80211_remove_iface(drv, ifidx);
8801                         os_free(new_bss);
8802                         return -1;
8803                 }
8804                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
8805                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
8806                 new_bss->ifindex = ifidx;
8807                 new_bss->drv = drv;
8808                 new_bss->next = drv->first_bss.next;
8809                 new_bss->freq = drv->first_bss.freq;
8810                 new_bss->ctx = bss_ctx;
8811                 drv->first_bss.next = new_bss;
8812                 if (drv_priv)
8813                         *drv_priv = new_bss;
8814                 nl80211_init_bss(new_bss);
8815
8816                 /* Subscribe management frames for this WPA_IF_AP_BSS */
8817                 if (nl80211_setup_ap(new_bss))
8818                         return -1;
8819         }
8820 #endif /* HOSTAPD */
8821
8822         if (drv->global)
8823                 drv->global->if_add_ifindex = ifidx;
8824
8825         return 0;
8826 }
8827
8828
8829 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
8830                                         enum wpa_driver_if_type type,
8831                                         const char *ifname)
8832 {
8833         struct wpa_driver_nl80211_data *drv = bss->drv;
8834         int ifindex = if_nametoindex(ifname);
8835
8836         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
8837                    __func__, type, ifname, ifindex);
8838         if (ifindex <= 0)
8839                 return -1;
8840
8841         nl80211_remove_iface(drv, ifindex);
8842
8843 #ifdef HOSTAPD
8844         if (type != WPA_IF_AP_BSS)
8845                 return 0;
8846
8847         if (bss->added_if_into_bridge) {
8848                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
8849                                     bss->ifname) < 0)
8850                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8851                                    "interface %s from bridge %s: %s",
8852                                    bss->ifname, bss->brname, strerror(errno));
8853         }
8854         if (bss->added_bridge) {
8855                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
8856                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8857                                    "bridge %s: %s",
8858                                    bss->brname, strerror(errno));
8859         }
8860
8861         if (bss != &drv->first_bss) {
8862                 struct i802_bss *tbss;
8863
8864                 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
8865                         if (tbss->next == bss) {
8866                                 tbss->next = bss->next;
8867                                 /* Unsubscribe management frames */
8868                                 nl80211_teardown_ap(bss);
8869                                 nl80211_destroy_bss(bss);
8870                                 os_free(bss);
8871                                 bss = NULL;
8872                                 break;
8873                         }
8874                 }
8875                 if (bss)
8876                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
8877                                    "BSS %p in the list", __func__, bss);
8878         }
8879 #endif /* HOSTAPD */
8880
8881         return 0;
8882 }
8883
8884
8885 static int cookie_handler(struct nl_msg *msg, void *arg)
8886 {
8887         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8888         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8889         u64 *cookie = arg;
8890         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8891                   genlmsg_attrlen(gnlh, 0), NULL);
8892         if (tb[NL80211_ATTR_COOKIE])
8893                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
8894         return NL_SKIP;
8895 }
8896
8897
8898 static int nl80211_send_frame_cmd(struct i802_bss *bss,
8899                                   unsigned int freq, unsigned int wait,
8900                                   const u8 *buf, size_t buf_len,
8901                                   u64 *cookie_out, int no_cck, int no_ack,
8902                                   int offchanok)
8903 {
8904         struct wpa_driver_nl80211_data *drv = bss->drv;
8905         struct nl_msg *msg;
8906         u64 cookie;
8907         int ret = -1;
8908
8909         msg = nlmsg_alloc();
8910         if (!msg)
8911                 return -1;
8912
8913         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
8914                    "no_ack=%d offchanok=%d",
8915                    freq, wait, no_cck, no_ack, offchanok);
8916         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
8917
8918         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8919         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8920         if (wait)
8921                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
8922         if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX))
8923                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
8924         if (no_cck)
8925                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
8926         if (no_ack)
8927                 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
8928
8929         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
8930
8931         cookie = 0;
8932         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8933         msg = NULL;
8934         if (ret) {
8935                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
8936                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
8937                            freq, wait);
8938                 goto nla_put_failure;
8939         }
8940         wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
8941                    "cookie 0x%llx", no_ack ? " (no ACK)" : "",
8942                    (long long unsigned int) cookie);
8943
8944         if (cookie_out)
8945                 *cookie_out = no_ack ? (u64) -1 : cookie;
8946
8947 nla_put_failure:
8948         nlmsg_free(msg);
8949         return ret;
8950 }
8951
8952
8953 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
8954                                           unsigned int freq,
8955                                           unsigned int wait_time,
8956                                           const u8 *dst, const u8 *src,
8957                                           const u8 *bssid,
8958                                           const u8 *data, size_t data_len,
8959                                           int no_cck)
8960 {
8961         struct wpa_driver_nl80211_data *drv = bss->drv;
8962         int ret = -1;
8963         u8 *buf;
8964         struct ieee80211_hdr *hdr;
8965
8966         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
8967                    "freq=%u MHz wait=%d ms no_cck=%d)",
8968                    drv->ifindex, freq, wait_time, no_cck);
8969
8970         buf = os_zalloc(24 + data_len);
8971         if (buf == NULL)
8972                 return ret;
8973         os_memcpy(buf + 24, data, data_len);
8974         hdr = (struct ieee80211_hdr *) buf;
8975         hdr->frame_control =
8976                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
8977         os_memcpy(hdr->addr1, dst, ETH_ALEN);
8978         os_memcpy(hdr->addr2, src, ETH_ALEN);
8979         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
8980
8981         if (is_ap_interface(drv->nlmode))
8982                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
8983                                                    0, freq, no_cck, 1,
8984                                                    wait_time);
8985         else
8986                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
8987                                              24 + data_len,
8988                                              &drv->send_action_cookie,
8989                                              no_cck, 0, 1);
8990
8991         os_free(buf);
8992         return ret;
8993 }
8994
8995
8996 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
8997 {
8998         struct i802_bss *bss = priv;
8999         struct wpa_driver_nl80211_data *drv = bss->drv;
9000         struct nl_msg *msg;
9001         int ret;
9002
9003         msg = nlmsg_alloc();
9004         if (!msg)
9005                 return;
9006
9007         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
9008                    (long long unsigned int) drv->send_action_cookie);
9009         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
9010
9011         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
9012         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
9013
9014         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9015         msg = NULL;
9016         if (ret)
9017                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
9018                            "(%s)", ret, strerror(-ret));
9019
9020  nla_put_failure:
9021         nlmsg_free(msg);
9022 }
9023
9024
9025 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
9026                                                 unsigned int duration)
9027 {
9028         struct i802_bss *bss = priv;
9029         struct wpa_driver_nl80211_data *drv = bss->drv;
9030         struct nl_msg *msg;
9031         int ret;
9032         u64 cookie;
9033
9034         msg = nlmsg_alloc();
9035         if (!msg)
9036                 return -1;
9037
9038         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
9039
9040         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
9041         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
9042         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
9043
9044         cookie = 0;
9045         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
9046         msg = NULL;
9047         if (ret == 0) {
9048                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
9049                            "0x%llx for freq=%u MHz duration=%u",
9050                            (long long unsigned int) cookie, freq, duration);
9051                 drv->remain_on_chan_cookie = cookie;
9052                 drv->pending_remain_on_chan = 1;
9053                 return 0;
9054         }
9055         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
9056                    "(freq=%d duration=%u): %d (%s)",
9057                    freq, duration, ret, strerror(-ret));
9058 nla_put_failure:
9059         nlmsg_free(msg);
9060         return -1;
9061 }
9062
9063
9064 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
9065 {
9066         struct i802_bss *bss = priv;
9067         struct wpa_driver_nl80211_data *drv = bss->drv;
9068         struct nl_msg *msg;
9069         int ret;
9070
9071         if (!drv->pending_remain_on_chan) {
9072                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
9073                            "to cancel");
9074                 return -1;
9075         }
9076
9077         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
9078                    "0x%llx",
9079                    (long long unsigned int) drv->remain_on_chan_cookie);
9080
9081         msg = nlmsg_alloc();
9082         if (!msg)
9083                 return -1;
9084
9085         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
9086
9087         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
9088         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
9089
9090         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9091         msg = NULL;
9092         if (ret == 0)
9093                 return 0;
9094         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
9095                    "%d (%s)", ret, strerror(-ret));
9096 nla_put_failure:
9097         nlmsg_free(msg);
9098         return -1;
9099 }
9100
9101
9102 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
9103 {
9104         struct wpa_driver_nl80211_data *drv = bss->drv;
9105
9106         if (!report) {
9107                 if (bss->nl_preq && drv->device_ap_sme &&
9108                     is_ap_interface(drv->nlmode)) {
9109                         /*
9110                          * Do not disable Probe Request reporting that was
9111                          * enabled in nl80211_setup_ap().
9112                          */
9113                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
9114                                    "Probe Request reporting nl_preq=%p while "
9115                                    "in AP mode", bss->nl_preq);
9116                 } else if (bss->nl_preq) {
9117                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
9118                                    "reporting nl_preq=%p", bss->nl_preq);
9119                         eloop_unregister_read_sock(
9120                                 nl_socket_get_fd(bss->nl_preq));
9121                         nl_destroy_handles(&bss->nl_preq);
9122                 }
9123                 return 0;
9124         }
9125
9126         if (bss->nl_preq) {
9127                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
9128                            "already on! nl_preq=%p", bss->nl_preq);
9129                 return 0;
9130         }
9131
9132         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
9133         if (bss->nl_preq == NULL)
9134                 return -1;
9135         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
9136                    "reporting nl_preq=%p", bss->nl_preq);
9137
9138         if (nl80211_register_frame(bss, bss->nl_preq,
9139                                    (WLAN_FC_TYPE_MGMT << 2) |
9140                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
9141                                    NULL, 0) < 0)
9142                 goto out_err;
9143
9144         eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq),
9145                                  wpa_driver_nl80211_event_receive, bss->nl_cb,
9146                                  bss->nl_preq);
9147
9148         return 0;
9149
9150  out_err:
9151         nl_destroy_handles(&bss->nl_preq);
9152         return -1;
9153 }
9154
9155
9156 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
9157                                      int ifindex, int disabled)
9158 {
9159         struct nl_msg *msg;
9160         struct nlattr *bands, *band;
9161         int ret;
9162
9163         msg = nlmsg_alloc();
9164         if (!msg)
9165                 return -1;
9166
9167         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
9168         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
9169
9170         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
9171         if (!bands)
9172                 goto nla_put_failure;
9173
9174         /*
9175          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
9176          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
9177          * rates. All 5 GHz rates are left enabled.
9178          */
9179         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
9180         if (!band)
9181                 goto nla_put_failure;
9182         if (disabled) {
9183                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
9184                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
9185         }
9186         nla_nest_end(msg, band);
9187
9188         nla_nest_end(msg, bands);
9189
9190         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9191         msg = NULL;
9192         if (ret) {
9193                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
9194                            "(%s)", ret, strerror(-ret));
9195         } else
9196                 drv->disabled_11b_rates = disabled;
9197
9198         return ret;
9199
9200 nla_put_failure:
9201         nlmsg_free(msg);
9202         return -1;
9203 }
9204
9205
9206 static int wpa_driver_nl80211_deinit_ap(void *priv)
9207 {
9208         struct i802_bss *bss = priv;
9209         struct wpa_driver_nl80211_data *drv = bss->drv;
9210         if (!is_ap_interface(drv->nlmode))
9211                 return -1;
9212         wpa_driver_nl80211_del_beacon(drv);
9213         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
9214 }
9215
9216
9217 static int wpa_driver_nl80211_stop_ap(void *priv)
9218 {
9219         struct i802_bss *bss = priv;
9220         struct wpa_driver_nl80211_data *drv = bss->drv;
9221         if (!is_ap_interface(drv->nlmode))
9222                 return -1;
9223         wpa_driver_nl80211_del_beacon(drv);
9224         bss->beacon_set = 0;
9225         return 0;
9226 }
9227
9228
9229 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
9230 {
9231         struct i802_bss *bss = priv;
9232         struct wpa_driver_nl80211_data *drv = bss->drv;
9233         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
9234                 return -1;
9235         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
9236 }
9237
9238
9239 static void wpa_driver_nl80211_resume(void *priv)
9240 {
9241         struct i802_bss *bss = priv;
9242         struct wpa_driver_nl80211_data *drv = bss->drv;
9243         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
9244                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
9245                            "resume event");
9246         }
9247 }
9248
9249
9250 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
9251                                   const u8 *ies, size_t ies_len)
9252 {
9253         struct i802_bss *bss = priv;
9254         struct wpa_driver_nl80211_data *drv = bss->drv;
9255         int ret;
9256         u8 *data, *pos;
9257         size_t data_len;
9258         const u8 *own_addr = bss->addr;
9259
9260         if (action != 1) {
9261                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
9262                            "action %d", action);
9263                 return -1;
9264         }
9265
9266         /*
9267          * Action frame payload:
9268          * Category[1] = 6 (Fast BSS Transition)
9269          * Action[1] = 1 (Fast BSS Transition Request)
9270          * STA Address
9271          * Target AP Address
9272          * FT IEs
9273          */
9274
9275         data_len = 2 + 2 * ETH_ALEN + ies_len;
9276         data = os_malloc(data_len);
9277         if (data == NULL)
9278                 return -1;
9279         pos = data;
9280         *pos++ = 0x06; /* FT Action category */
9281         *pos++ = action;
9282         os_memcpy(pos, own_addr, ETH_ALEN);
9283         pos += ETH_ALEN;
9284         os_memcpy(pos, target_ap, ETH_ALEN);
9285         pos += ETH_ALEN;
9286         os_memcpy(pos, ies, ies_len);
9287
9288         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
9289                                              drv->bssid, own_addr, drv->bssid,
9290                                              data, data_len, 0);
9291         os_free(data);
9292
9293         return ret;
9294 }
9295
9296
9297 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
9298 {
9299         struct i802_bss *bss = priv;
9300         struct wpa_driver_nl80211_data *drv = bss->drv;
9301         struct nl_msg *msg;
9302         struct nlattr *cqm;
9303         int ret = -1;
9304
9305         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
9306                    "hysteresis=%d", threshold, hysteresis);
9307
9308         msg = nlmsg_alloc();
9309         if (!msg)
9310                 return -1;
9311
9312         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
9313
9314         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
9315
9316         cqm = nla_nest_start(msg, NL80211_ATTR_CQM);
9317         if (cqm == NULL)
9318                 goto nla_put_failure;
9319
9320         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
9321         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
9322         nla_nest_end(msg, cqm);
9323
9324         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9325         msg = NULL;
9326
9327 nla_put_failure:
9328         nlmsg_free(msg);
9329         return ret;
9330 }
9331
9332
9333 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
9334 {
9335         struct i802_bss *bss = priv;
9336         struct wpa_driver_nl80211_data *drv = bss->drv;
9337         int res;
9338
9339         os_memset(si, 0, sizeof(*si));
9340         res = nl80211_get_link_signal(drv, si);
9341         if (res != 0)
9342                 return res;
9343
9344         return nl80211_get_link_noise(drv, si);
9345 }
9346
9347
9348 static int wpa_driver_nl80211_shared_freq(void *priv)
9349 {
9350         struct i802_bss *bss = priv;
9351         struct wpa_driver_nl80211_data *drv = bss->drv;
9352         struct wpa_driver_nl80211_data *driver;
9353         int freq = 0;
9354
9355         /*
9356          * If the same PHY is in connected state with some other interface,
9357          * then retrieve the assoc freq.
9358          */
9359         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
9360                    drv->phyname);
9361
9362         dl_list_for_each(driver, &drv->global->interfaces,
9363                          struct wpa_driver_nl80211_data, list) {
9364                 if (drv == driver ||
9365                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
9366                     !driver->associated)
9367                         continue;
9368
9369                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
9370                            MACSTR,
9371                            driver->phyname, driver->first_bss.ifname,
9372                            MAC2STR(driver->first_bss.addr));
9373                 if (is_ap_interface(driver->nlmode))
9374                         freq = driver->first_bss.freq;
9375                 else
9376                         freq = nl80211_get_assoc_freq(driver);
9377                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
9378                            drv->phyname, freq);
9379         }
9380
9381         if (!freq)
9382                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
9383                            "PHY (%s) in associated state", drv->phyname);
9384
9385         return freq;
9386 }
9387
9388
9389 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
9390                               int encrypt)
9391 {
9392         struct i802_bss *bss = priv;
9393         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
9394                                              0, 0, 0, 0);
9395 }
9396
9397
9398 static int nl80211_set_param(void *priv, const char *param)
9399 {
9400         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
9401         if (param == NULL)
9402                 return 0;
9403
9404 #ifdef CONFIG_P2P
9405         if (os_strstr(param, "use_p2p_group_interface=1")) {
9406                 struct i802_bss *bss = priv;
9407                 struct wpa_driver_nl80211_data *drv = bss->drv;
9408
9409                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
9410                            "interface");
9411                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
9412                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
9413         }
9414 #endif /* CONFIG_P2P */
9415
9416         return 0;
9417 }
9418
9419
9420 static void * nl80211_global_init(void)
9421 {
9422         struct nl80211_global *global;
9423         struct netlink_config *cfg;
9424
9425         global = os_zalloc(sizeof(*global));
9426         if (global == NULL)
9427                 return NULL;
9428         global->ioctl_sock = -1;
9429         dl_list_init(&global->interfaces);
9430         global->if_add_ifindex = -1;
9431
9432         cfg = os_zalloc(sizeof(*cfg));
9433         if (cfg == NULL)
9434                 goto err;
9435
9436         cfg->ctx = global;
9437         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
9438         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
9439         global->netlink = netlink_init(cfg);
9440         if (global->netlink == NULL) {
9441                 os_free(cfg);
9442                 goto err;
9443         }
9444
9445         if (wpa_driver_nl80211_init_nl_global(global) < 0)
9446                 goto err;
9447
9448         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
9449         if (global->ioctl_sock < 0) {
9450                 perror("socket(PF_INET,SOCK_DGRAM)");
9451                 goto err;
9452         }
9453
9454         return global;
9455
9456 err:
9457         nl80211_global_deinit(global);
9458         return NULL;
9459 }
9460
9461
9462 static void nl80211_global_deinit(void *priv)
9463 {
9464         struct nl80211_global *global = priv;
9465         if (global == NULL)
9466                 return;
9467         if (!dl_list_empty(&global->interfaces)) {
9468                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
9469                            "nl80211_global_deinit",
9470                            dl_list_len(&global->interfaces));
9471         }
9472
9473         if (global->netlink)
9474                 netlink_deinit(global->netlink);
9475
9476         nl_destroy_handles(&global->nl);
9477
9478         if (global->nl_event) {
9479                 eloop_unregister_read_sock(
9480                         nl_socket_get_fd(global->nl_event));
9481                 nl_destroy_handles(&global->nl_event);
9482         }
9483
9484         nl_cb_put(global->nl_cb);
9485
9486         if (global->ioctl_sock >= 0)
9487                 close(global->ioctl_sock);
9488
9489         os_free(global);
9490 }
9491
9492
9493 static const char * nl80211_get_radio_name(void *priv)
9494 {
9495         struct i802_bss *bss = priv;
9496         struct wpa_driver_nl80211_data *drv = bss->drv;
9497         return drv->phyname;
9498 }
9499
9500
9501 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
9502                          const u8 *pmkid)
9503 {
9504         struct nl_msg *msg;
9505
9506         msg = nlmsg_alloc();
9507         if (!msg)
9508                 return -ENOMEM;
9509
9510         nl80211_cmd(bss->drv, msg, 0, cmd);
9511
9512         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
9513         if (pmkid)
9514                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
9515         if (bssid)
9516                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
9517
9518         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
9519  nla_put_failure:
9520         nlmsg_free(msg);
9521         return -ENOBUFS;
9522 }
9523
9524
9525 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
9526 {
9527         struct i802_bss *bss = priv;
9528         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
9529         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
9530 }
9531
9532
9533 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
9534 {
9535         struct i802_bss *bss = priv;
9536         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
9537                    MAC2STR(bssid));
9538         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
9539 }
9540
9541
9542 static int nl80211_flush_pmkid(void *priv)
9543 {
9544         struct i802_bss *bss = priv;
9545         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
9546         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
9547 }
9548
9549
9550 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
9551                                    const u8 *replay_ctr)
9552 {
9553         struct i802_bss *bss = priv;
9554         struct wpa_driver_nl80211_data *drv = bss->drv;
9555         struct nlattr *replay_nested;
9556         struct nl_msg *msg;
9557
9558         msg = nlmsg_alloc();
9559         if (!msg)
9560                 return;
9561
9562         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
9563
9564         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
9565
9566         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
9567         if (!replay_nested)
9568                 goto nla_put_failure;
9569
9570         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
9571         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
9572         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
9573                 replay_ctr);
9574
9575         nla_nest_end(msg, replay_nested);
9576
9577         send_and_recv_msgs(drv, msg, NULL, NULL);
9578         return;
9579  nla_put_failure:
9580         nlmsg_free(msg);
9581 }
9582
9583
9584 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
9585                                     const u8 *addr, int qos)
9586 {
9587         /* send data frame to poll STA and check whether
9588          * this frame is ACKed */
9589         struct {
9590                 struct ieee80211_hdr hdr;
9591                 u16 qos_ctl;
9592         } STRUCT_PACKED nulldata;
9593         size_t size;
9594
9595         /* Send data frame to poll STA and check whether this frame is ACKed */
9596
9597         os_memset(&nulldata, 0, sizeof(nulldata));
9598
9599         if (qos) {
9600                 nulldata.hdr.frame_control =
9601                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
9602                                      WLAN_FC_STYPE_QOS_NULL);
9603                 size = sizeof(nulldata);
9604         } else {
9605                 nulldata.hdr.frame_control =
9606                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
9607                                      WLAN_FC_STYPE_NULLFUNC);
9608                 size = sizeof(struct ieee80211_hdr);
9609         }
9610
9611         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
9612         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
9613         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
9614         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
9615
9616         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
9617                                          0, 0) < 0)
9618                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
9619                            "send poll frame");
9620 }
9621
9622 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
9623                                 int qos)
9624 {
9625         struct i802_bss *bss = priv;
9626         struct wpa_driver_nl80211_data *drv = bss->drv;
9627         struct nl_msg *msg;
9628
9629         if (!drv->poll_command_supported) {
9630                 nl80211_send_null_frame(bss, own_addr, addr, qos);
9631                 return;
9632         }
9633
9634         msg = nlmsg_alloc();
9635         if (!msg)
9636                 return;
9637
9638         nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
9639
9640         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
9641         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
9642
9643         send_and_recv_msgs(drv, msg, NULL, NULL);
9644         return;
9645  nla_put_failure:
9646         nlmsg_free(msg);
9647 }
9648
9649
9650 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
9651 {
9652         struct nl_msg *msg;
9653
9654         msg = nlmsg_alloc();
9655         if (!msg)
9656                 return -ENOMEM;
9657
9658         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
9659         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
9660         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
9661                     enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
9662         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
9663 nla_put_failure:
9664         nlmsg_free(msg);
9665         return -ENOBUFS;
9666 }
9667
9668
9669 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
9670                                      int ctwindow)
9671 {
9672         struct i802_bss *bss = priv;
9673
9674         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
9675                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
9676
9677         if (opp_ps != -1 || ctwindow != -1)
9678                 return -1; /* Not yet supported */
9679
9680         if (legacy_ps == -1)
9681                 return 0;
9682         if (legacy_ps != 0 && legacy_ps != 1)
9683                 return -1; /* Not yet supported */
9684
9685         return nl80211_set_power_save(bss, legacy_ps);
9686 }
9687
9688
9689 static int nl80211_start_radar_detection(void *priv, int freq)
9690 {
9691         struct i802_bss *bss = priv;
9692         struct wpa_driver_nl80211_data *drv = bss->drv;
9693         struct nl_msg *msg;
9694         int ret;
9695
9696         wpa_printf(MSG_DEBUG, "nl80211: Start radar detection (CAC)");
9697         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
9698                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
9699                            "detection");
9700                 return -1;
9701         }
9702
9703         msg = nlmsg_alloc();
9704         if (!msg)
9705                 return -1;
9706
9707         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT);
9708         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
9709         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
9710
9711         /* only HT20 is supported at this point */
9712         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, NL80211_CHAN_HT20);
9713
9714         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9715         if (ret == 0)
9716                 return 0;
9717         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
9718                    "%d (%s)", ret, strerror(-ret));
9719 nla_put_failure:
9720         return -1;
9721 }
9722
9723 #ifdef CONFIG_TDLS
9724
9725 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
9726                                   u8 dialog_token, u16 status_code,
9727                                   const u8 *buf, size_t len)
9728 {
9729         struct i802_bss *bss = priv;
9730         struct wpa_driver_nl80211_data *drv = bss->drv;
9731         struct nl_msg *msg;
9732
9733         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
9734                 return -EOPNOTSUPP;
9735
9736         if (!dst)
9737                 return -EINVAL;
9738
9739         msg = nlmsg_alloc();
9740         if (!msg)
9741                 return -ENOMEM;
9742
9743         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
9744         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
9745         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
9746         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
9747         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
9748         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
9749         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
9750
9751         return send_and_recv_msgs(drv, msg, NULL, NULL);
9752
9753 nla_put_failure:
9754         nlmsg_free(msg);
9755         return -ENOBUFS;
9756 }
9757
9758
9759 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
9760 {
9761         struct i802_bss *bss = priv;
9762         struct wpa_driver_nl80211_data *drv = bss->drv;
9763         struct nl_msg *msg;
9764         enum nl80211_tdls_operation nl80211_oper;
9765
9766         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
9767                 return -EOPNOTSUPP;
9768
9769         switch (oper) {
9770         case TDLS_DISCOVERY_REQ:
9771                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
9772                 break;
9773         case TDLS_SETUP:
9774                 nl80211_oper = NL80211_TDLS_SETUP;
9775                 break;
9776         case TDLS_TEARDOWN:
9777                 nl80211_oper = NL80211_TDLS_TEARDOWN;
9778                 break;
9779         case TDLS_ENABLE_LINK:
9780                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
9781                 break;
9782         case TDLS_DISABLE_LINK:
9783                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
9784                 break;
9785         case TDLS_ENABLE:
9786                 return 0;
9787         case TDLS_DISABLE:
9788                 return 0;
9789         default:
9790                 return -EINVAL;
9791         }
9792
9793         msg = nlmsg_alloc();
9794         if (!msg)
9795                 return -ENOMEM;
9796
9797         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
9798         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
9799         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
9800         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
9801
9802         return send_and_recv_msgs(drv, msg, NULL, NULL);
9803
9804 nla_put_failure:
9805         nlmsg_free(msg);
9806         return -ENOBUFS;
9807 }
9808
9809 #endif /* CONFIG TDLS */
9810
9811
9812 #ifdef ANDROID
9813
9814 typedef struct android_wifi_priv_cmd {
9815         char *buf;
9816         int used_len;
9817         int total_len;
9818 } android_wifi_priv_cmd;
9819
9820 static int drv_errors = 0;
9821
9822 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
9823 {
9824         drv_errors++;
9825         if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
9826                 drv_errors = 0;
9827                 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
9828         }
9829 }
9830
9831
9832 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
9833 {
9834         struct wpa_driver_nl80211_data *drv = bss->drv;
9835         struct ifreq ifr;
9836         android_wifi_priv_cmd priv_cmd;
9837         char buf[MAX_DRV_CMD_SIZE];
9838         int ret;
9839
9840         os_memset(&ifr, 0, sizeof(ifr));
9841         os_memset(&priv_cmd, 0, sizeof(priv_cmd));
9842         os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
9843
9844         os_memset(buf, 0, sizeof(buf));
9845         os_strlcpy(buf, cmd, sizeof(buf));
9846
9847         priv_cmd.buf = buf;
9848         priv_cmd.used_len = sizeof(buf);
9849         priv_cmd.total_len = sizeof(buf);
9850         ifr.ifr_data = &priv_cmd;
9851
9852         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
9853         if (ret < 0) {
9854                 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
9855                            __func__);
9856                 wpa_driver_send_hang_msg(drv);
9857                 return ret;
9858         }
9859
9860         drv_errors = 0;
9861         return 0;
9862 }
9863
9864
9865 static int android_pno_start(struct i802_bss *bss,
9866                              struct wpa_driver_scan_params *params)
9867 {
9868         struct wpa_driver_nl80211_data *drv = bss->drv;
9869         struct ifreq ifr;
9870         android_wifi_priv_cmd priv_cmd;
9871         int ret = 0, i = 0, bp;
9872         char buf[WEXT_PNO_MAX_COMMAND_SIZE];
9873
9874         bp = WEXT_PNOSETUP_HEADER_SIZE;
9875         os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
9876         buf[bp++] = WEXT_PNO_TLV_PREFIX;
9877         buf[bp++] = WEXT_PNO_TLV_VERSION;
9878         buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
9879         buf[bp++] = WEXT_PNO_TLV_RESERVED;
9880
9881         while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
9882                 /* Check that there is enough space needed for 1 more SSID, the
9883                  * other sections and null termination */
9884                 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
9885                      WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
9886                         break;
9887                 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
9888                                   params->ssids[i].ssid,
9889                                   params->ssids[i].ssid_len);
9890                 buf[bp++] = WEXT_PNO_SSID_SECTION;
9891                 buf[bp++] = params->ssids[i].ssid_len;
9892                 os_memcpy(&buf[bp], params->ssids[i].ssid,
9893                           params->ssids[i].ssid_len);
9894                 bp += params->ssids[i].ssid_len;
9895                 i++;
9896         }
9897
9898         buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
9899         os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
9900                     WEXT_PNO_SCAN_INTERVAL);
9901         bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
9902
9903         buf[bp++] = WEXT_PNO_REPEAT_SECTION;
9904         os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
9905                     WEXT_PNO_REPEAT);
9906         bp += WEXT_PNO_REPEAT_LENGTH;
9907
9908         buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
9909         os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
9910                     WEXT_PNO_MAX_REPEAT);
9911         bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
9912
9913         memset(&ifr, 0, sizeof(ifr));
9914         memset(&priv_cmd, 0, sizeof(priv_cmd));
9915         os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
9916
9917         priv_cmd.buf = buf;
9918         priv_cmd.used_len = bp;
9919         priv_cmd.total_len = bp;
9920         ifr.ifr_data = &priv_cmd;
9921
9922         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
9923
9924         if (ret < 0) {
9925                 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
9926                            ret);
9927                 wpa_driver_send_hang_msg(drv);
9928                 return ret;
9929         }
9930
9931         drv_errors = 0;
9932
9933         return android_priv_cmd(bss, "PNOFORCE 1");
9934 }
9935
9936
9937 static int android_pno_stop(struct i802_bss *bss)
9938 {
9939         return android_priv_cmd(bss, "PNOFORCE 0");
9940 }
9941
9942 #endif /* ANDROID */
9943
9944
9945 static int driver_nl80211_set_key(const char *ifname, void *priv,
9946                                   enum wpa_alg alg, const u8 *addr,
9947                                   int key_idx, int set_tx,
9948                                   const u8 *seq, size_t seq_len,
9949                                   const u8 *key, size_t key_len)
9950 {
9951         struct i802_bss *bss = priv;
9952         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
9953                                           set_tx, seq, seq_len, key, key_len);
9954 }
9955
9956
9957 static int driver_nl80211_scan2(void *priv,
9958                                 struct wpa_driver_scan_params *params)
9959 {
9960         struct i802_bss *bss = priv;
9961         return wpa_driver_nl80211_scan(bss, params);
9962 }
9963
9964
9965 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
9966                                          int reason_code)
9967 {
9968         struct i802_bss *bss = priv;
9969         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
9970 }
9971
9972
9973 static int driver_nl80211_authenticate(void *priv,
9974                                        struct wpa_driver_auth_params *params)
9975 {
9976         struct i802_bss *bss = priv;
9977         return wpa_driver_nl80211_authenticate(bss, params);
9978 }
9979
9980
9981 static void driver_nl80211_deinit(void *priv)
9982 {
9983         struct i802_bss *bss = priv;
9984         wpa_driver_nl80211_deinit(bss);
9985 }
9986
9987
9988 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
9989                                     const char *ifname)
9990 {
9991         struct i802_bss *bss = priv;
9992         return wpa_driver_nl80211_if_remove(bss, type, ifname);
9993 }
9994
9995
9996 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
9997                                     size_t data_len, int noack)
9998 {
9999         struct i802_bss *bss = priv;
10000         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
10001                                             0, 0, 0, 0);
10002 }
10003
10004
10005 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
10006 {
10007         struct i802_bss *bss = priv;
10008         return wpa_driver_nl80211_sta_remove(bss, addr);
10009 }
10010
10011
10012 #if defined(HOSTAPD) || defined(CONFIG_AP)
10013 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
10014                                        const char *ifname, int vlan_id)
10015 {
10016         struct i802_bss *bss = priv;
10017         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
10018 }
10019 #endif /* HOSTAPD || CONFIG_AP */
10020
10021
10022 static int driver_nl80211_read_sta_data(void *priv,
10023                                         struct hostap_sta_driver_data *data,
10024                                         const u8 *addr)
10025 {
10026         struct i802_bss *bss = priv;
10027         return i802_read_sta_data(bss, data, addr);
10028 }
10029
10030
10031 static int driver_nl80211_send_action(void *priv, unsigned int freq,
10032                                       unsigned int wait_time,
10033                                       const u8 *dst, const u8 *src,
10034                                       const u8 *bssid,
10035                                       const u8 *data, size_t data_len,
10036                                       int no_cck)
10037 {
10038         struct i802_bss *bss = priv;
10039         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
10040                                               bssid, data, data_len, no_cck);
10041 }
10042
10043
10044 static int driver_nl80211_probe_req_report(void *priv, int report)
10045 {
10046         struct i802_bss *bss = priv;
10047         return wpa_driver_nl80211_probe_req_report(bss, report);
10048 }
10049
10050
10051 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
10052                                             const u8 *ies, size_t ies_len)
10053 {
10054         int ret;
10055         struct nl_msg *msg;
10056         struct i802_bss *bss = priv;
10057         struct wpa_driver_nl80211_data *drv = bss->drv;
10058         u16 mdid = WPA_GET_LE16(md);
10059
10060         msg = nlmsg_alloc();
10061         if (!msg)
10062                 return -ENOMEM;
10063
10064         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
10065         nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES);
10066         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
10067         NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies);
10068         NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid);
10069
10070         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
10071         if (ret) {
10072                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
10073                            "err=%d (%s)", ret, strerror(-ret));
10074         }
10075
10076         return ret;
10077
10078 nla_put_failure:
10079         nlmsg_free(msg);
10080         return -ENOBUFS;
10081 }
10082
10083
10084 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
10085         .name = "nl80211",
10086         .desc = "Linux nl80211/cfg80211",
10087         .get_bssid = wpa_driver_nl80211_get_bssid,
10088         .get_ssid = wpa_driver_nl80211_get_ssid,
10089         .set_key = driver_nl80211_set_key,
10090         .scan2 = driver_nl80211_scan2,
10091         .sched_scan = wpa_driver_nl80211_sched_scan,
10092         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
10093         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
10094         .deauthenticate = driver_nl80211_deauthenticate,
10095         .authenticate = driver_nl80211_authenticate,
10096         .associate = wpa_driver_nl80211_associate,
10097         .global_init = nl80211_global_init,
10098         .global_deinit = nl80211_global_deinit,
10099         .init2 = wpa_driver_nl80211_init,
10100         .deinit = driver_nl80211_deinit,
10101         .get_capa = wpa_driver_nl80211_get_capa,
10102         .set_operstate = wpa_driver_nl80211_set_operstate,
10103         .set_supp_port = wpa_driver_nl80211_set_supp_port,
10104         .set_country = wpa_driver_nl80211_set_country,
10105         .set_ap = wpa_driver_nl80211_set_ap,
10106         .set_acl = wpa_driver_nl80211_set_acl,
10107         .if_add = wpa_driver_nl80211_if_add,
10108         .if_remove = driver_nl80211_if_remove,
10109         .send_mlme = driver_nl80211_send_mlme,
10110         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
10111         .sta_add = wpa_driver_nl80211_sta_add,
10112         .sta_remove = driver_nl80211_sta_remove,
10113         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
10114         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
10115 #ifdef HOSTAPD
10116         .hapd_init = i802_init,
10117         .hapd_deinit = i802_deinit,
10118         .set_wds_sta = i802_set_wds_sta,
10119 #endif /* HOSTAPD */
10120 #if defined(HOSTAPD) || defined(CONFIG_AP)
10121         .get_seqnum = i802_get_seqnum,
10122         .flush = i802_flush,
10123         .get_inact_sec = i802_get_inact_sec,
10124         .sta_clear_stats = i802_sta_clear_stats,
10125         .set_rts = i802_set_rts,
10126         .set_frag = i802_set_frag,
10127         .set_tx_queue_params = i802_set_tx_queue_params,
10128         .set_sta_vlan = driver_nl80211_set_sta_vlan,
10129         .sta_deauth = i802_sta_deauth,
10130         .sta_disassoc = i802_sta_disassoc,
10131 #endif /* HOSTAPD || CONFIG_AP */
10132         .read_sta_data = driver_nl80211_read_sta_data,
10133         .set_freq = i802_set_freq,
10134         .send_action = driver_nl80211_send_action,
10135         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
10136         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
10137         .cancel_remain_on_channel =
10138         wpa_driver_nl80211_cancel_remain_on_channel,
10139         .probe_req_report = driver_nl80211_probe_req_report,
10140         .deinit_ap = wpa_driver_nl80211_deinit_ap,
10141         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
10142         .resume = wpa_driver_nl80211_resume,
10143         .send_ft_action = nl80211_send_ft_action,
10144         .signal_monitor = nl80211_signal_monitor,
10145         .signal_poll = nl80211_signal_poll,
10146         .send_frame = nl80211_send_frame,
10147         .shared_freq = wpa_driver_nl80211_shared_freq,
10148         .set_param = nl80211_set_param,
10149         .get_radio_name = nl80211_get_radio_name,
10150         .add_pmkid = nl80211_add_pmkid,
10151         .remove_pmkid = nl80211_remove_pmkid,
10152         .flush_pmkid = nl80211_flush_pmkid,
10153         .set_rekey_info = nl80211_set_rekey_info,
10154         .poll_client = nl80211_poll_client,
10155         .set_p2p_powersave = nl80211_set_p2p_powersave,
10156         .start_dfs_cac = nl80211_start_radar_detection,
10157         .stop_ap = wpa_driver_nl80211_stop_ap,
10158 #ifdef CONFIG_TDLS
10159         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
10160         .tdls_oper = nl80211_tdls_oper,
10161 #endif /* CONFIG_TDLS */
10162         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
10163 };