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 static void wpa_driver_nl80211_deinit(void *priv);
 182
 183 struct i802_bss {
 184         struct wpa_driver_nl80211_data *drv;
 185         struct i802_bss *next;
 186         int ifindex;
 187         char ifname[IFNAMSIZ + 1];
 188         char brname[IFNAMSIZ];
 189         unsigned int beacon_set:1;
 190         unsigned int added_if_into_bridge:1;
 191         unsigned int added_bridge:1;
 192         unsigned int in_deinit:1;
 193
 194         u8 addr[ETH_ALEN];
 195
 196         int freq;
 197
 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         int has_capability;
 218
 219         int operstate;
 220
 221         int scan_complete_events;
 222
 223         struct nl_cb *nl_cb;
 224
 225         u8 auth_bssid[ETH_ALEN];
 226         u8 bssid[ETH_ALEN];
 227         int associated;
 228         u8 ssid[32];
 229         size_t ssid_len;
 230         enum nl80211_iftype nlmode;
 231         enum nl80211_iftype ap_scan_as_station;
 232         unsigned int assoc_freq;
 233
 234         int monitor_sock;
 235         int monitor_ifidx;
 236         int monitor_refcount;
 237
 238         unsigned int disabled_11b_rates:1;
 239         unsigned int pending_remain_on_chan:1;
 240         unsigned int in_interface_list:1;
 241         unsigned int device_ap_sme:1;
 242         unsigned int poll_command_supported:1;
 243         unsigned int data_tx_status:1;
 244         unsigned int scan_for_auth:1;
 245         unsigned int retry_auth:1;
 246         unsigned int use_monitor:1;
 247
 248         u64 remain_on_chan_cookie;
 249         u64 send_action_cookie;
 250
 251         unsigned int last_mgmt_freq;
 252
 253         struct wpa_driver_scan_filter *filter_ssids;
 254         size_t num_filter_ssids;
 255
 256         struct i802_bss first_bss;
 257
 258         int eapol_tx_sock;
 259
 260 #ifdef HOSTAPD
 261         int eapol_sock; /* socket for EAPOL frames */
 262
 263         int default_if_indices[16];
 264         int *if_indices;
 265         int num_if_indices;
 266
 267         int last_freq;
 268         int last_freq_ht;
 269 #endif /* HOSTAPD */
 270
 271         /* From failed authentication command */
 272         int auth_freq;
 273         u8 auth_bssid_[ETH_ALEN];
 274         u8 auth_ssid[32];
 275         size_t auth_ssid_len;
 276         int auth_alg;
 277         u8 *auth_ie;
 278         size_t auth_ie_len;
 279         u8 auth_wep_key[4][16];
 280         size_t auth_wep_key_len[4];
 281         int auth_wep_tx_keyidx;
 282         int auth_local_state_change;
 283         int auth_p2p;
 284 };
 285
 286
 287 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 288                                             void *timeout_ctx);
 289 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
 290                                        enum nl80211_iftype nlmode);
 291 static int
 292 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 293 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 294                                    const u8 *addr, int cmd, u16 reason_code,
 295                                    int local_state_change);
 296 static void nl80211_remove_monitor_interface(
 297         struct wpa_driver_nl80211_data *drv);
 298 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 299                                   unsigned int freq, unsigned int wait,
 300                                   const u8 *buf, size_t buf_len, u64 *cookie,
 301                                   int no_cck, int no_ack, int offchanok);
 302 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
 303 #ifdef ANDROID
 304 static int android_pno_start(struct i802_bss *bss,
 305                              struct wpa_driver_scan_params *params);
 306 static int android_pno_stop(struct i802_bss *bss);
 307 #endif /* ANDROID */
 308
 309 #ifdef HOSTAPD
 310 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 311 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 312 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 313 static int wpa_driver_nl80211_if_remove(void *priv,
 314                                         enum wpa_driver_if_type type,
 315                                         const char *ifname);
 316 #else /* HOSTAPD */
 317 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 318 {
 319 }
 320
 321 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 322 {
 323 }
 324
 325 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 326 {
 327         return 0;
 328 }
 329 #endif /* HOSTAPD */
 330
 331 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 332 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 333                                      int ifindex, int disabled);
 334
 335 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
 336 static int wpa_driver_nl80211_authenticate_retry(
 337         struct wpa_driver_nl80211_data *drv);
 338
 339
 340 static int is_ap_interface(enum nl80211_iftype nlmode)
 341 {
 342         return (nlmode == NL80211_IFTYPE_AP ||
 343                 nlmode == NL80211_IFTYPE_P2P_GO);
 344 }
 345
 346
 347 static int is_sta_interface(enum nl80211_iftype nlmode)
 348 {
 349         return (nlmode == NL80211_IFTYPE_STATION ||
 350                 nlmode == NL80211_IFTYPE_P2P_CLIENT);
 351 }
 352
 353
 354 static int is_p2p_interface(enum nl80211_iftype nlmode)
 355 {
 356         return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 357                 nlmode == NL80211_IFTYPE_P2P_GO);
 358 }
 359
 360
 361 struct nl80211_bss_info_arg {
 362         struct wpa_driver_nl80211_data *drv;
 363         struct wpa_scan_results *res;
 364         unsigned int assoc_freq;
 365         u8 assoc_bssid[ETH_ALEN];
 366 };
 367
 368 static int bss_info_handler(struct nl_msg *msg, void *arg);
 369
 370
 371 /* nl80211 code */
 372 static int ack_handler(struct nl_msg *msg, void *arg)
 373 {
 374         int *err = arg;
 375         *err = 0;
 376         return NL_STOP;
 377 }
 378
 379 static int finish_handler(struct nl_msg *msg, void *arg)
 380 {
 381         int *ret = arg;
 382         *ret = 0;
 383         return NL_SKIP;
 384 }
 385
 386 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 387                          void *arg)
 388 {
 389         int *ret = arg;
 390         *ret = err->error;
 391         return NL_SKIP;
 392 }
 393
 394
 395 static int no_seq_check(struct nl_msg *msg, void *arg)
 396 {
 397         return NL_OK;
 398 }
 399
 400
 401 static int send_and_recv(struct nl80211_global *global,
 402                          struct nl_handle *nl_handle, struct nl_msg *msg,
 403                          int (*valid_handler)(struct nl_msg *, void *),
 404                          void *valid_data)
 405 {
 406         struct nl_cb *cb;
 407         int err = -ENOMEM;
 408
 409         cb = nl_cb_clone(global->nl_cb);
 410         if (!cb)
 411                 goto out;
 412
 413         err = nl_send_auto_complete(nl_handle, msg);
 414         if (err < 0)
 415                 goto out;
 416
 417         err = 1;
 418
 419         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 420         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 421         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 422
 423         if (valid_handler)
 424                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 425                           valid_handler, valid_data);
 426
 427         while (err > 0)
 428                 nl_recvmsgs(nl_handle, cb);
 429  out:
 430         nl_cb_put(cb);
 431         nlmsg_free(msg);
 432         return err;
 433 }
 434
 435
 436 static int send_and_recv_msgs_global(struct nl80211_global *global,
 437                                      struct nl_msg *msg,
 438                                      int (*valid_handler)(struct nl_msg *, void *),
 439                                      void *valid_data)
 440 {
 441         return send_and_recv(global, global->nl, msg, valid_handler,
 442                              valid_data);
 443 }
 444
 445
 446 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 447                               struct nl_msg *msg,
 448                               int (*valid_handler)(struct nl_msg *, void *),
 449                               void *valid_data)
 450 {
 451         return send_and_recv(drv->global, drv->global->nl, msg,
 452                              valid_handler, valid_data);
 453 }
 454
 455
 456 struct family_data {
 457         const char *group;
 458         int id;
 459 };
 460
 461
 462 static int family_handler(struct nl_msg *msg, void *arg)
 463 {
 464         struct family_data *res = arg;
 465         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 466         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 467         struct nlattr *mcgrp;
 468         int i;
 469
 470         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 471                   genlmsg_attrlen(gnlh, 0), NULL);
 472         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 473                 return NL_SKIP;
 474
 475         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 476                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 477                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 478                           nla_len(mcgrp), NULL);
 479                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 480                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 481                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 482                                res->group,
 483                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 484                         continue;
 485                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 486                 break;
 487         };
 488
 489         return NL_SKIP;
 490 }
 491
 492
 493 static int nl_get_multicast_id(struct nl80211_global *global,
 494                                const char *family, const char *group)
 495 {
 496         struct nl_msg *msg;
 497         int ret = -1;
 498         struct family_data res = { group, -ENOENT };
 499
 500         msg = nlmsg_alloc();
 501         if (!msg)
 502                 return -ENOMEM;
 503         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 504                     0, 0, CTRL_CMD_GETFAMILY, 0);
 505         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 506
 507         ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
 508         msg = NULL;
 509         if (ret == 0)
 510                 ret = res.id;
 511
 512 nla_put_failure:
 513         nlmsg_free(msg);
 514         return ret;
 515 }
 516
 517
 518 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 519                           struct nl_msg *msg, int flags, uint8_t cmd)
 520 {
 521         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 522                            0, flags, cmd, 0);
 523 }
 524
 525
 526 struct wiphy_idx_data {
 527         int wiphy_idx;
 528 };
 529
 530
 531 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 532 {
 533         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 534         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 535         struct wiphy_idx_data *info = arg;
 536
 537         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 538                   genlmsg_attrlen(gnlh, 0), NULL);
 539
 540         if (tb[NL80211_ATTR_WIPHY])
 541                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 542
 543         return NL_SKIP;
 544 }
 545
 546
 547 static int nl80211_get_wiphy_index(struct i802_bss *bss)
 548 {
 549         struct nl_msg *msg;
 550         struct wiphy_idx_data data = {
 551                 .wiphy_idx = -1,
 552         };
 553
 554         msg = nlmsg_alloc();
 555         if (!msg)
 556                 return -1;
 557
 558         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 559
 560         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 561
 562         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 563                 return data.wiphy_idx;
 564         msg = NULL;
 565 nla_put_failure:
 566         nlmsg_free(msg);
 567         return -1;
 568 }
 569
 570
 571 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 572                                     struct nl80211_wiphy_data *w)
 573 {
 574         struct nl_msg *msg;
 575         int ret = -1;
 576
 577         msg = nlmsg_alloc();
 578         if (!msg)
 579                 return -1;
 580
 581         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
 582
 583         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
 584
 585         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 586         msg = NULL;
 587         if (ret) {
 588                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 589                            "failed: ret=%d (%s)",
 590                            ret, strerror(-ret));
 591                 goto nla_put_failure;
 592         }
 593         ret = 0;
 594 nla_put_failure:
 595         nlmsg_free(msg);
 596         return ret;
 597 }
 598
 599
 600 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 601 {
 602         struct nl80211_wiphy_data *w = eloop_ctx;
 603
 604         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 605
 606         nl_recvmsgs(handle, w->nl_cb);
 607 }
 608
 609
 610 static int process_beacon_event(struct nl_msg *msg, void *arg)
 611 {
 612         struct nl80211_wiphy_data *w = arg;
 613         struct wpa_driver_nl80211_data *drv;
 614         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 615         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 616         union wpa_event_data event;
 617
 618         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 619                   genlmsg_attrlen(gnlh, 0), NULL);
 620
 621         if (gnlh->cmd != NL80211_CMD_FRAME) {
 622                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 623                            gnlh->cmd);
 624                 return NL_SKIP;
 625         }
 626
 627         if (!tb[NL80211_ATTR_FRAME])
 628                 return NL_SKIP;
 629
 630         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 631                          wiphy_list) {
 632                 os_memset(&event, 0, sizeof(event));
 633                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 634                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 635                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 636         }
 637
 638         return NL_SKIP;
 639 }
 640
 641
 642 static struct nl80211_wiphy_data *
 643 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 644 {
 645         static DEFINE_DL_LIST(nl80211_wiphys);
 646         struct nl80211_wiphy_data *w;
 647         int wiphy_idx, found = 0;
 648         struct i802_bss *tmp_bss;
 649
 650         if (bss->wiphy_data != NULL)
 651                 return bss->wiphy_data;
 652
 653         wiphy_idx = nl80211_get_wiphy_index(bss);
 654
 655         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 656                 if (w->wiphy_idx == wiphy_idx)
 657                         goto add;
 658         }
 659
 660         /* alloc new one */
 661         w = os_zalloc(sizeof(*w));
 662         if (w == NULL)
 663                 return NULL;
 664         w->wiphy_idx = wiphy_idx;
 665         dl_list_init(&w->bsss);
 666         dl_list_init(&w->drvs);
 667
 668         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 669         if (!w->nl_cb) {
 670                 os_free(w);
 671                 return NULL;
 672         }
 673         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 674         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 675                   w);
 676
 677         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 678                                          "wiphy beacons");
 679         if (w->nl_beacons == NULL) {
 680                 os_free(w);
 681                 return NULL;
 682         }
 683
 684         if (nl80211_register_beacons(bss->drv, w)) {
 685                 nl_destroy_handles(&w->nl_beacons);
 686                 os_free(w);
 687                 return NULL;
 688         }
 689
 690         eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons),
 691                                  nl80211_recv_beacons, w, w->nl_beacons);
 692
 693         dl_list_add(&nl80211_wiphys, &w->list);
 694
 695 add:
 696         /* drv entry for this bss already there? */
 697         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 698                 if (tmp_bss->drv == bss->drv) {
 699                         found = 1;
 700                         break;
 701                 }
 702         }
 703         /* if not add it */
 704         if (!found)
 705                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 706
 707         dl_list_add(&w->bsss, &bss->wiphy_list);
 708         bss->wiphy_data = w;
 709         return w;
 710 }
 711
 712
 713 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 714 {
 715         struct nl80211_wiphy_data *w = bss->wiphy_data;
 716         struct i802_bss *tmp_bss;
 717         int found = 0;
 718
 719         if (w == NULL)
 720                 return;
 721         bss->wiphy_data = NULL;
 722         dl_list_del(&bss->wiphy_list);
 723
 724         /* still any for this drv present? */
 725         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 726                 if (tmp_bss->drv == bss->drv) {
 727                         found = 1;
 728                         break;
 729                 }
 730         }
 731         /* if not remove it */
 732         if (!found)
 733                 dl_list_del(&bss->drv->wiphy_list);
 734
 735         if (!dl_list_empty(&w->bsss))
 736                 return;
 737
 738         eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons));
 739
 740         nl_cb_put(w->nl_cb);
 741         nl_destroy_handles(&w->nl_beacons);
 742         dl_list_del(&w->list);
 743         os_free(w);
 744 }
 745
 746
 747 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 748 {
 749         struct i802_bss *bss = priv;
 750         struct wpa_driver_nl80211_data *drv = bss->drv;
 751         if (!drv->associated)
 752                 return -1;
 753         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 754         return 0;
 755 }
 756
 757
 758 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 759 {
 760         struct i802_bss *bss = priv;
 761         struct wpa_driver_nl80211_data *drv = bss->drv;
 762         if (!drv->associated)
 763                 return -1;
 764         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 765         return drv->ssid_len;
 766 }
 767
 768
 769 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 770                                           char *buf, size_t len, int del)
 771 {
 772         union wpa_event_data event;
 773
 774         os_memset(&event, 0, sizeof(event));
 775         if (len > sizeof(event.interface_status.ifname))
 776                 len = sizeof(event.interface_status.ifname) - 1;
 777         os_memcpy(event.interface_status.ifname, buf, len);
 778         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 779                 EVENT_INTERFACE_ADDED;
 780
 781         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 782                    del ? "DEL" : "NEW",
 783                    event.interface_status.ifname,
 784                    del ? "removed" : "added");
 785
 786         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 787                 if (del) {
 788                         if (drv->if_removed) {
 789                                 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
 790                                            "already set - ignore event");
 791                                 return;
 792                         }
 793                         drv->if_removed = 1;
 794                 } else {
 795                         if (if_nametoindex(drv->first_bss.ifname) == 0) {
 796                                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s "
 797                                            "does not exist - ignore "
 798                                            "RTM_NEWLINK",
 799                                            drv->first_bss.ifname);
 800                                 return;
 801                         }
 802                         if (!drv->if_removed) {
 803                                 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
 804                                            "already cleared - ignore event");
 805                                 return;
 806                         }
 807                         drv->if_removed = 0;
 808                 }
 809         }
 810
 811         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 812 }
 813
 814
 815 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 816                                          u8 *buf, size_t len)
 817 {
 818         int attrlen, rta_len;
 819         struct rtattr *attr;
 820
 821         attrlen = len;
 822         attr = (struct rtattr *) buf;
 823
 824         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 825         while (RTA_OK(attr, attrlen)) {
 826                 if (attr->rta_type == IFLA_IFNAME) {
 827                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 828                             == 0)
 829                                 return 1;
 830                         else
 831                                 break;
 832                 }
 833                 attr = RTA_NEXT(attr, attrlen);
 834         }
 835
 836         return 0;
 837 }
 838
 839
 840 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 841                                           int ifindex, u8 *buf, size_t len)
 842 {
 843         if (drv->ifindex == ifindex)
 844                 return 1;
 845
 846         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 847                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 848                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 849                            "interface");
 850                 wpa_driver_nl80211_finish_drv_init(drv);
 851                 return 1;
 852         }
 853
 854         return 0;
 855 }
 856
 857
 858 static struct wpa_driver_nl80211_data *
 859 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 860 {
 861         struct wpa_driver_nl80211_data *drv;
 862         dl_list_for_each(drv, &global->interfaces,
 863                          struct wpa_driver_nl80211_data, list) {
 864                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 865                     have_ifidx(drv, idx))
 866                         return drv;
 867         }
 868         return NULL;
 869 }
 870
 871
 872 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 873                                                  struct ifinfomsg *ifi,
 874                                                  u8 *buf, size_t len)
 875 {
 876         struct nl80211_global *global = ctx;
 877         struct wpa_driver_nl80211_data *drv;
 878         int attrlen, rta_len;
 879         struct rtattr *attr;
 880         u32 brid = 0;
 881         char namebuf[IFNAMSIZ];
 882
 883         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 884         if (!drv) {
 885                 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
 886                            "ifindex %d", ifi->ifi_index);
 887                 return;
 888         }
 889
 890         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 891                    "(%s%s%s%s)",
 892                    drv->operstate, ifi->ifi_flags,
 893                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 894                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 895                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 896                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 897
 898         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 899                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 900                     linux_iface_up(drv->global->ioctl_sock,
 901                                    drv->first_bss.ifname) > 0) {
 902                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 903                                    "event since interface %s is up", namebuf);
 904                         return;
 905                 }
 906                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 907                 if (drv->ignore_if_down_event) {
 908                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 909                                    "event generated by mode change");
 910                         drv->ignore_if_down_event = 0;
 911                 } else {
 912                         drv->if_disabled = 1;
 913                         wpa_supplicant_event(drv->ctx,
 914                                              EVENT_INTERFACE_DISABLED, NULL);
 915                 }
 916         }
 917
 918         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 919                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 920                     linux_iface_up(drv->global->ioctl_sock,
 921                                    drv->first_bss.ifname) == 0) {
 922                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 923                                    "event since interface %s is down",
 924                                    namebuf);
 925                 } else if (if_nametoindex(drv->first_bss.ifname) == 0) {
 926                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 927                                    "event since interface %s does not exist",
 928                                    drv->first_bss.ifname);
 929                 } else if (drv->if_removed) {
 930                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 931                                    "event since interface %s is marked "
 932                                    "removed", drv->first_bss.ifname);
 933                 } else {
 934                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
 935                         drv->if_disabled = 0;
 936                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
 937                                              NULL);
 938                 }
 939         }
 940
 941         /*
 942          * Some drivers send the association event before the operup event--in
 943          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 944          * fails. This will hit us when wpa_supplicant does not need to do
 945          * IEEE 802.1X authentication
 946          */
 947         if (drv->operstate == 1 &&
 948             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 949             !(ifi->ifi_flags & IFF_RUNNING))
 950                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
 951                                        -1, IF_OPER_UP);
 952
 953         attrlen = len;
 954         attr = (struct rtattr *) buf;
 955         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 956         while (RTA_OK(attr, attrlen)) {
 957                 if (attr->rta_type == IFLA_IFNAME) {
 958                         wpa_driver_nl80211_event_link(
 959                                 drv,
 960                                 ((char *) attr) + rta_len,
 961                                 attr->rta_len - rta_len, 0);
 962                 } else if (attr->rta_type == IFLA_MASTER)
 963                         brid = nla_get_u32((struct nlattr *) attr);
 964                 attr = RTA_NEXT(attr, attrlen);
 965         }
 966
 967         if (ifi->ifi_family == AF_BRIDGE && brid) {
 968                 /* device has been added to bridge */
 969                 if_indextoname(brid, namebuf);
 970                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
 971                            brid, namebuf);
 972                 add_ifidx(drv, brid);
 973         }
 974 }
 975
 976
 977 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 978                                                  struct ifinfomsg *ifi,
 979                                                  u8 *buf, size_t len)
 980 {
 981         struct nl80211_global *global = ctx;
 982         struct wpa_driver_nl80211_data *drv;
 983         int attrlen, rta_len;
 984         struct rtattr *attr;
 985         u32 brid = 0;
 986
 987         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 988         if (!drv) {
 989                 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
 990                            "foreign ifindex %d", ifi->ifi_index);
 991                 return;
 992         }
 993
 994         attrlen = len;
 995         attr = (struct rtattr *) buf;
 996
 997         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 998         while (RTA_OK(attr, attrlen)) {
 999                 if (attr->rta_type == IFLA_IFNAME) {
1000                         wpa_driver_nl80211_event_link(
1001                                 drv,
1002                                 ((char *) attr) + rta_len,
1003                                 attr->rta_len - rta_len, 1);
1004                 } else if (attr->rta_type == IFLA_MASTER)
1005                         brid = nla_get_u32((struct nlattr *) attr);
1006                 attr = RTA_NEXT(attr, attrlen);
1007         }
1008
1009         if (ifi->ifi_family == AF_BRIDGE && brid) {
1010                 /* device has been removed from bridge */
1011                 char namebuf[IFNAMSIZ];
1012                 if_indextoname(brid, namebuf);
1013                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1014                            "%s", brid, namebuf);
1015                 del_ifidx(drv, brid);
1016         }
1017 }
1018
1019
1020 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
1021                             const u8 *frame, size_t len)
1022 {
1023         const struct ieee80211_mgmt *mgmt;
1024         union wpa_event_data event;
1025
1026         mgmt = (const struct ieee80211_mgmt *) frame;
1027         if (len < 24 + sizeof(mgmt->u.auth)) {
1028                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1029                            "frame");
1030                 return;
1031         }
1032
1033         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
1034         os_memset(&event, 0, sizeof(event));
1035         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1036         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1037         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1038         if (len > 24 + sizeof(mgmt->u.auth)) {
1039                 event.auth.ies = mgmt->u.auth.variable;
1040                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1041         }
1042
1043         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1044 }
1045
1046
1047 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1048 {
1049         struct nl_msg *msg;
1050         int ret;
1051         struct nl80211_bss_info_arg arg;
1052
1053         os_memset(&arg, 0, sizeof(arg));
1054         msg = nlmsg_alloc();
1055         if (!msg)
1056                 goto nla_put_failure;
1057
1058         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1059         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1060
1061         arg.drv = drv;
1062         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1063         msg = NULL;
1064         if (ret == 0) {
1065                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1066                            "associated BSS from scan results: %u MHz",
1067                            arg.assoc_freq);
1068                 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
1069         }
1070         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1071                    "(%s)", ret, strerror(-ret));
1072 nla_put_failure:
1073         nlmsg_free(msg);
1074         return drv->assoc_freq;
1075 }
1076
1077
1078 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1079                             const u8 *frame, size_t len)
1080 {
1081         const struct ieee80211_mgmt *mgmt;
1082         union wpa_event_data event;
1083         u16 status;
1084
1085         mgmt = (const struct ieee80211_mgmt *) frame;
1086         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1087                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1088                            "frame");
1089                 return;
1090         }
1091
1092         status = le_to_host16(mgmt->u.assoc_resp.status_code);
1093         if (status != WLAN_STATUS_SUCCESS) {
1094                 os_memset(&event, 0, sizeof(event));
1095                 event.assoc_reject.bssid = mgmt->bssid;
1096                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1097                         event.assoc_reject.resp_ies =
1098                                 (u8 *) mgmt->u.assoc_resp.variable;
1099                         event.assoc_reject.resp_ies_len =
1100                                 len - 24 - sizeof(mgmt->u.assoc_resp);
1101                 }
1102                 event.assoc_reject.status_code = status;
1103
1104                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1105                 return;
1106         }
1107
1108         drv->associated = 1;
1109         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1110
1111         os_memset(&event, 0, sizeof(event));
1112         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1113                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1114                 event.assoc_info.resp_ies_len =
1115                         len - 24 - sizeof(mgmt->u.assoc_resp);
1116         }
1117
1118         event.assoc_info.freq = drv->assoc_freq;
1119
1120         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1121 }
1122
1123
1124 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
1125                                enum nl80211_commands cmd, struct nlattr *status,
1126                                struct nlattr *addr, struct nlattr *req_ie,
1127                                struct nlattr *resp_ie)
1128 {
1129         union wpa_event_data event;
1130
1131         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1132                 /*
1133                  * Avoid reporting two association events that would confuse
1134                  * the core code.
1135                  */
1136                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
1137                            "when using userspace SME", cmd);
1138                 return;
1139         }
1140
1141         os_memset(&event, 0, sizeof(event));
1142         if (cmd == NL80211_CMD_CONNECT &&
1143             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
1144                 if (addr)
1145                         event.assoc_reject.bssid = nla_data(addr);
1146                 if (resp_ie) {
1147                         event.assoc_reject.resp_ies = nla_data(resp_ie);
1148                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
1149                 }
1150                 event.assoc_reject.status_code = nla_get_u16(status);
1151                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1152                 return;
1153         }
1154
1155         drv->associated = 1;
1156         if (addr)
1157                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
1158
1159         if (req_ie) {
1160                 event.assoc_info.req_ies = nla_data(req_ie);
1161                 event.assoc_info.req_ies_len = nla_len(req_ie);
1162         }
1163         if (resp_ie) {
1164                 event.assoc_info.resp_ies = nla_data(resp_ie);
1165                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
1166         }
1167
1168         event.assoc_info.freq = nl80211_get_assoc_freq(drv);
1169
1170         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1171 }
1172
1173
1174 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
1175                                   struct nlattr *reason, struct nlattr *addr,
1176                                   struct nlattr *by_ap)
1177 {
1178         union wpa_event_data data;
1179
1180         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1181                 /*
1182                  * Avoid reporting two disassociation events that could
1183                  * confuse the core code.
1184                  */
1185                 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1186                            "event when using userspace SME");
1187                 return;
1188         }
1189
1190         drv->associated = 0;
1191         os_memset(&data, 0, sizeof(data));
1192         if (reason)
1193                 data.deauth_info.reason_code = nla_get_u16(reason);
1194         data.deauth_info.locally_generated = by_ap == NULL;
1195         wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data);
1196 }
1197
1198
1199 static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
1200                                  struct nlattr *freq, struct nlattr *type)
1201 {
1202         union wpa_event_data data;
1203         int ht_enabled = 1;
1204         int chan_offset = 0;
1205
1206         wpa_printf(MSG_DEBUG, "nl80211: Channel switch event");
1207
1208         if (!freq || !type)
1209                 return;
1210
1211         switch (nla_get_u32(type)) {
1212         case NL80211_CHAN_NO_HT:
1213                 ht_enabled = 0;
1214                 break;
1215         case NL80211_CHAN_HT20:
1216                 break;
1217         case NL80211_CHAN_HT40PLUS:
1218                 chan_offset = 1;
1219                 break;
1220         case NL80211_CHAN_HT40MINUS:
1221                 chan_offset = -1;
1222                 break;
1223         }
1224
1225         data.ch_switch.freq = nla_get_u32(freq);
1226         data.ch_switch.ht_enabled = ht_enabled;
1227         data.ch_switch.ch_offset = chan_offset;
1228
1229         wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data);
1230 }
1231
1232
1233 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
1234                                enum nl80211_commands cmd, struct nlattr *addr)
1235 {
1236         union wpa_event_data event;
1237         enum wpa_event_type ev;
1238
1239         if (nla_len(addr) != ETH_ALEN)
1240                 return;
1241
1242         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
1243                    cmd, MAC2STR((u8 *) nla_data(addr)));
1244
1245         if (cmd == NL80211_CMD_AUTHENTICATE)
1246                 ev = EVENT_AUTH_TIMED_OUT;
1247         else if (cmd == NL80211_CMD_ASSOCIATE)
1248                 ev = EVENT_ASSOC_TIMED_OUT;
1249         else
1250                 return;
1251
1252         os_memset(&event, 0, sizeof(event));
1253         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
1254         wpa_supplicant_event(drv->ctx, ev, &event);
1255 }
1256
1257
1258 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
1259                             struct nlattr *freq, struct nlattr *sig,
1260                             const u8 *frame, size_t len)
1261 {
1262         const struct ieee80211_mgmt *mgmt;
1263         union wpa_event_data event;
1264         u16 fc, stype;
1265         int ssi_signal = 0;
1266
1267         mgmt = (const struct ieee80211_mgmt *) frame;
1268         if (len < 24) {
1269                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
1270                 return;
1271         }
1272
1273         fc = le_to_host16(mgmt->frame_control);
1274         stype = WLAN_FC_GET_STYPE(fc);
1275
1276         if (sig)
1277                 ssi_signal = (s32) nla_get_u32(sig);
1278
1279         os_memset(&event, 0, sizeof(event));
1280         if (freq) {
1281                 event.rx_action.freq = nla_get_u32(freq);
1282                 drv->last_mgmt_freq = event.rx_action.freq;
1283         }
1284         if (stype == WLAN_FC_STYPE_ACTION) {
1285                 event.rx_action.da = mgmt->da;
1286                 event.rx_action.sa = mgmt->sa;
1287                 event.rx_action.bssid = mgmt->bssid;
1288                 event.rx_action.category = mgmt->u.action.category;
1289                 event.rx_action.data = &mgmt->u.action.category + 1;
1290                 event.rx_action.len = frame + len - event.rx_action.data;
1291                 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
1292         } else {
1293                 event.rx_mgmt.frame = frame;
1294                 event.rx_mgmt.frame_len = len;
1295                 event.rx_mgmt.ssi_signal = ssi_signal;
1296                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
1297         }
1298 }
1299
1300
1301 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv,
1302                                       struct nlattr *cookie, const u8 *frame,
1303                                       size_t len, struct nlattr *ack)
1304 {
1305         union wpa_event_data event;
1306         const struct ieee80211_hdr *hdr;
1307         u16 fc;
1308
1309         if (!is_ap_interface(drv->nlmode)) {
1310                 u64 cookie_val;
1311
1312                 if (!cookie)
1313                         return;
1314
1315                 cookie_val = nla_get_u64(cookie);
1316                 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:"
1317                            " cookie=0%llx%s (ack=%d)",
1318                            (long long unsigned int) cookie_val,
1319                            cookie_val == drv->send_action_cookie ?
1320                            " (match)" : " (unknown)", ack != NULL);
1321                 if (cookie_val != drv->send_action_cookie)
1322                         return;
1323         }
1324
1325         hdr = (const struct ieee80211_hdr *) frame;
1326         fc = le_to_host16(hdr->frame_control);
1327
1328         os_memset(&event, 0, sizeof(event));
1329         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
1330         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
1331         event.tx_status.dst = hdr->addr1;
1332         event.tx_status.data = frame;
1333         event.tx_status.data_len = len;
1334         event.tx_status.ack = ack != NULL;
1335         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
1336 }
1337
1338
1339 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
1340                                        enum wpa_event_type type,
1341                                        const u8 *frame, size_t len)
1342 {
1343         const struct ieee80211_mgmt *mgmt;
1344         union wpa_event_data event;
1345         const u8 *bssid = NULL;
1346         u16 reason_code = 0;
1347
1348         mgmt = (const struct ieee80211_mgmt *) frame;
1349         if (len >= 24) {
1350                 bssid = mgmt->bssid;
1351
1352                 if (drv->associated != 0 &&
1353                     os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1354                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1355                         /*
1356                          * We have presumably received this deauth as a
1357                          * response to a clear_state_mismatch() outgoing
1358                          * deauth.  Don't let it take us offline!
1359                          */
1360                         wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1361                                    "from Unknown BSSID " MACSTR " -- ignoring",
1362                                    MAC2STR(bssid));
1363                         return;
1364                 }
1365         }
1366
1367         drv->associated = 0;
1368         os_memset(&event, 0, sizeof(event));
1369
1370         /* Note: Same offset for Reason Code in both frame subtypes */
1371         if (len >= 24 + sizeof(mgmt->u.deauth))
1372                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1373
1374         if (type == EVENT_DISASSOC) {
1375                 event.disassoc_info.locally_generated =
1376                         !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1377                 event.disassoc_info.addr = bssid;
1378                 event.disassoc_info.reason_code = reason_code;
1379                 if (frame + len > mgmt->u.disassoc.variable) {
1380                         event.disassoc_info.ie = mgmt->u.disassoc.variable;
1381                         event.disassoc_info.ie_len = frame + len -
1382                                 mgmt->u.disassoc.variable;
1383                 }
1384         } else {
1385                 event.deauth_info.locally_generated =
1386                         !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1387                 event.deauth_info.addr = bssid;
1388                 event.deauth_info.reason_code = reason_code;
1389                 if (frame + len > mgmt->u.deauth.variable) {
1390                         event.deauth_info.ie = mgmt->u.deauth.variable;
1391                         event.deauth_info.ie_len = frame + len -
1392                                 mgmt->u.deauth.variable;
1393                 }
1394         }
1395
1396         wpa_supplicant_event(drv->ctx, type, &event);
1397 }
1398
1399
1400 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1401                                          enum wpa_event_type type,
1402                                          const u8 *frame, size_t len)
1403 {
1404         const struct ieee80211_mgmt *mgmt;
1405         union wpa_event_data event;
1406         u16 reason_code = 0;
1407
1408         if (len < 24)
1409                 return;
1410
1411         mgmt = (const struct ieee80211_mgmt *) frame;
1412
1413         os_memset(&event, 0, sizeof(event));
1414         /* Note: Same offset for Reason Code in both frame subtypes */
1415         if (len >= 24 + sizeof(mgmt->u.deauth))
1416                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1417
1418         if (type == EVENT_UNPROT_DISASSOC) {
1419                 event.unprot_disassoc.sa = mgmt->sa;
1420                 event.unprot_disassoc.da = mgmt->da;
1421                 event.unprot_disassoc.reason_code = reason_code;
1422         } else {
1423                 event.unprot_deauth.sa = mgmt->sa;
1424                 event.unprot_deauth.da = mgmt->da;
1425                 event.unprot_deauth.reason_code = reason_code;
1426         }
1427
1428         wpa_supplicant_event(drv->ctx, type, &event);
1429 }
1430
1431
1432 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1433                        enum nl80211_commands cmd, struct nlattr *frame,
1434                        struct nlattr *addr, struct nlattr *timed_out,
1435                        struct nlattr *freq, struct nlattr *ack,
1436                        struct nlattr *cookie, struct nlattr *sig)
1437 {
1438         if (timed_out && addr) {
1439                 mlme_timeout_event(drv, cmd, addr);
1440                 return;
1441         }
1442
1443         if (frame == NULL) {
1444                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1445                            "data", cmd);
1446                 return;
1447         }
1448
1449         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1450         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1451                     nla_data(frame), nla_len(frame));
1452
1453         switch (cmd) {
1454         case NL80211_CMD_AUTHENTICATE:
1455                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1456                 break;
1457         case NL80211_CMD_ASSOCIATE:
1458                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1459                 break;
1460         case NL80211_CMD_DEAUTHENTICATE:
1461                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1462                                            nla_data(frame), nla_len(frame));
1463                 break;
1464         case NL80211_CMD_DISASSOCIATE:
1465                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1466                                            nla_data(frame), nla_len(frame));
1467                 break;
1468         case NL80211_CMD_FRAME:
1469                 mlme_event_mgmt(drv, freq, sig, nla_data(frame),
1470                                 nla_len(frame));
1471                 break;
1472         case NL80211_CMD_FRAME_TX_STATUS:
1473                 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame),
1474                                           nla_len(frame), ack);
1475                 break;
1476         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1477                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1478                                              nla_data(frame), nla_len(frame));
1479                 break;
1480         case NL80211_CMD_UNPROT_DISASSOCIATE:
1481                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1482                                              nla_data(frame), nla_len(frame));
1483                 break;
1484         default:
1485                 break;
1486         }
1487 }
1488
1489
1490 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1491                                            struct nlattr *tb[])
1492 {
1493         union wpa_event_data data;
1494
1495         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1496         os_memset(&data, 0, sizeof(data));
1497         if (tb[NL80211_ATTR_MAC]) {
1498                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1499                             nla_data(tb[NL80211_ATTR_MAC]),
1500                             nla_len(tb[NL80211_ATTR_MAC]));
1501                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1502         }
1503         if (tb[NL80211_ATTR_KEY_SEQ]) {
1504                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1505                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1506                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1507         }
1508         if (tb[NL80211_ATTR_KEY_TYPE]) {
1509                 enum nl80211_key_type key_type =
1510                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1511                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1512                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1513                         data.michael_mic_failure.unicast = 1;
1514         } else
1515                 data.michael_mic_failure.unicast = 1;
1516
1517         if (tb[NL80211_ATTR_KEY_IDX]) {
1518                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1519                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1520         }
1521
1522         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1523 }
1524
1525
1526 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1527                                  struct nlattr *tb[])
1528 {
1529         if (tb[NL80211_ATTR_MAC] == NULL) {
1530                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1531                            "event");
1532                 return;
1533         }
1534         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1535         drv->associated = 1;
1536         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1537                    MAC2STR(drv->bssid));
1538
1539         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1540 }
1541
1542
1543 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1544                                          int cancel_event, struct nlattr *tb[])
1545 {
1546         unsigned int freq, chan_type, duration;
1547         union wpa_event_data data;
1548         u64 cookie;
1549
1550         if (tb[NL80211_ATTR_WIPHY_FREQ])
1551                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1552         else
1553                 freq = 0;
1554
1555         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1556                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1557         else
1558                 chan_type = 0;
1559
1560         if (tb[NL80211_ATTR_DURATION])
1561                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1562         else
1563                 duration = 0;
1564
1565         if (tb[NL80211_ATTR_COOKIE])
1566                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1567         else
1568                 cookie = 0;
1569
1570         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1571                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1572                    cancel_event, freq, chan_type, duration,
1573                    (long long unsigned int) cookie,
1574                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1575
1576         if (cookie != drv->remain_on_chan_cookie)
1577                 return; /* not for us */
1578
1579         if (cancel_event)
1580                 drv->pending_remain_on_chan = 0;
1581
1582         os_memset(&data, 0, sizeof(data));
1583         data.remain_on_channel.freq = freq;
1584         data.remain_on_channel.duration = duration;
1585         wpa_supplicant_event(drv->ctx, cancel_event ?
1586                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
1587                              EVENT_REMAIN_ON_CHANNEL, &data);
1588 }
1589
1590
1591 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1592                             struct nlattr *tb[])
1593 {
1594         union wpa_event_data event;
1595         struct nlattr *nl;
1596         int rem;
1597         struct scan_info *info;
1598 #define MAX_REPORT_FREQS 50
1599         int freqs[MAX_REPORT_FREQS];
1600         int num_freqs = 0;
1601
1602         if (drv->scan_for_auth) {
1603                 drv->scan_for_auth = 0;
1604                 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing "
1605                            "cfg80211 BSS entry");
1606                 wpa_driver_nl80211_authenticate_retry(drv);
1607                 return;
1608         }
1609
1610         os_memset(&event, 0, sizeof(event));
1611         info = &event.scan_info;
1612         info->aborted = aborted;
1613
1614         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1615                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1616                         struct wpa_driver_scan_ssid *s =
1617                                 &info->ssids[info->num_ssids];
1618                         s->ssid = nla_data(nl);
1619                         s->ssid_len = nla_len(nl);
1620                         info->num_ssids++;
1621                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1622                                 break;
1623                 }
1624         }
1625         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1626                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1627                 {
1628                         freqs[num_freqs] = nla_get_u32(nl);
1629                         num_freqs++;
1630                         if (num_freqs == MAX_REPORT_FREQS - 1)
1631                                 break;
1632                 }
1633                 info->freqs = freqs;
1634                 info->num_freqs = num_freqs;
1635         }
1636         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1637 }
1638
1639
1640 static int get_link_signal(struct nl_msg *msg, void *arg)
1641 {
1642         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1643         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1644         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1645         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1646                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1647         };
1648         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1649         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1650                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1651                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1652                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1653                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1654         };
1655         struct wpa_signal_info *sig_change = arg;
1656
1657         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1658                   genlmsg_attrlen(gnlh, 0), NULL);
1659         if (!tb[NL80211_ATTR_STA_INFO] ||
1660             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1661                              tb[NL80211_ATTR_STA_INFO], policy))
1662                 return NL_SKIP;
1663         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1664                 return NL_SKIP;
1665
1666         sig_change->current_signal =
1667                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1668
1669         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1670                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1671                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1672                                      rate_policy)) {
1673                         sig_change->current_txrate = 0;
1674                 } else {
1675                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1676                                 sig_change->current_txrate =
1677                                         nla_get_u16(rinfo[
1678                                              NL80211_RATE_INFO_BITRATE]) * 100;
1679                         }
1680                 }
1681         }
1682
1683         return NL_SKIP;
1684 }
1685
1686
1687 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1688                                    struct wpa_signal_info *sig)
1689 {
1690         struct nl_msg *msg;
1691
1692         sig->current_signal = -9999;
1693         sig->current_txrate = 0;
1694
1695         msg = nlmsg_alloc();
1696         if (!msg)
1697                 return -ENOMEM;
1698
1699         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1700
1701         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1702         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1703
1704         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1705  nla_put_failure:
1706         nlmsg_free(msg);
1707         return -ENOBUFS;
1708 }
1709
1710
1711 static int get_link_noise(struct nl_msg *msg, void *arg)
1712 {
1713         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1714         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1715         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1716         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1717                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1718                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1719         };
1720         struct wpa_signal_info *sig_change = arg;
1721
1722         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1723                   genlmsg_attrlen(gnlh, 0), NULL);
1724
1725         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1726                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1727                 return NL_SKIP;
1728         }
1729
1730         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1731                              tb[NL80211_ATTR_SURVEY_INFO],
1732                              survey_policy)) {
1733                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1734                            "attributes!");
1735                 return NL_SKIP;
1736         }
1737
1738         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1739                 return NL_SKIP;
1740
1741         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1742             sig_change->frequency)
1743                 return NL_SKIP;
1744
1745         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1746                 return NL_SKIP;
1747
1748         sig_change->current_noise =
1749                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1750
1751         return NL_SKIP;
1752 }
1753
1754
1755 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1756                                   struct wpa_signal_info *sig_change)
1757 {
1758         struct nl_msg *msg;
1759
1760         sig_change->current_noise = 9999;
1761         sig_change->frequency = drv->assoc_freq;
1762
1763         msg = nlmsg_alloc();
1764         if (!msg)
1765                 return -ENOMEM;
1766
1767         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1768
1769         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1770
1771         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1772  nla_put_failure:
1773         nlmsg_free(msg);
1774         return -ENOBUFS;
1775 }
1776
1777
1778 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1779 {
1780         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1781         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1782         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1783         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1784                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1785                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1786         };
1787         struct wpa_scan_results *scan_results = arg;
1788         struct wpa_scan_res *scan_res;
1789         size_t i;
1790
1791         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1792                   genlmsg_attrlen(gnlh, 0), NULL);
1793
1794         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1795                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1796                 return NL_SKIP;
1797         }
1798
1799         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1800                              tb[NL80211_ATTR_SURVEY_INFO],
1801                              survey_policy)) {
1802                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1803                            "attributes");
1804                 return NL_SKIP;
1805         }
1806
1807         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1808                 return NL_SKIP;
1809
1810         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1811                 return NL_SKIP;
1812
1813         for (i = 0; i < scan_results->num; ++i) {
1814                 scan_res = scan_results->res[i];
1815                 if (!scan_res)
1816                         continue;
1817                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1818                     scan_res->freq)
1819                         continue;
1820                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1821                         continue;
1822                 scan_res->noise = (s8)
1823                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1824                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1825         }
1826
1827         return NL_SKIP;
1828 }
1829
1830
1831 static int nl80211_get_noise_for_scan_results(
1832         struct wpa_driver_nl80211_data *drv,
1833         struct wpa_scan_results *scan_res)
1834 {
1835         struct nl_msg *msg;
1836
1837         msg = nlmsg_alloc();
1838         if (!msg)
1839                 return -ENOMEM;
1840
1841         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1842
1843         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1844
1845         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1846                                   scan_res);
1847  nla_put_failure:
1848         nlmsg_free(msg);
1849         return -ENOBUFS;
1850 }
1851
1852
1853 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1854                               struct nlattr *tb[])
1855 {
1856         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1857                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1858                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1859                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1860                 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1861         };
1862         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1863         enum nl80211_cqm_rssi_threshold_event event;
1864         union wpa_event_data ed;
1865         struct wpa_signal_info sig;
1866         int res;
1867
1868         if (tb[NL80211_ATTR_CQM] == NULL ||
1869             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1870                              cqm_policy)) {
1871                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1872                 return;
1873         }
1874
1875         os_memset(&ed, 0, sizeof(ed));
1876
1877         if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1878                 if (!tb[NL80211_ATTR_MAC])
1879                         return;
1880                 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1881                           ETH_ALEN);
1882                 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1883                 return;
1884         }
1885
1886         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1887                 return;
1888         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1889
1890         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1891                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1892                            "event: RSSI high");
1893                 ed.signal_change.above_threshold = 1;
1894         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1895                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1896                            "event: RSSI low");
1897                 ed.signal_change.above_threshold = 0;
1898         } else
1899                 return;
1900
1901         res = nl80211_get_link_signal(drv, &sig);
1902         if (res == 0) {
1903                 ed.signal_change.current_signal = sig.current_signal;
1904                 ed.signal_change.current_txrate = sig.current_txrate;
1905                 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm  txrate: %d",
1906                            sig.current_signal, sig.current_txrate);
1907         }
1908
1909         res = nl80211_get_link_noise(drv, &sig);
1910         if (res == 0) {
1911                 ed.signal_change.current_noise = sig.current_noise;
1912                 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1913                            sig.current_noise);
1914         }
1915
1916         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1917 }
1918
1919
1920 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1921                                       struct nlattr **tb)
1922 {
1923         u8 *addr;
1924         union wpa_event_data data;
1925
1926         if (tb[NL80211_ATTR_MAC] == NULL)
1927                 return;
1928         addr = nla_data(tb[NL80211_ATTR_MAC]);
1929         wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1930
1931         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1932                 u8 *ies = NULL;
1933                 size_t ies_len = 0;
1934                 if (tb[NL80211_ATTR_IE]) {
1935                         ies = nla_data(tb[NL80211_ATTR_IE]);
1936                         ies_len = nla_len(tb[NL80211_ATTR_IE]);
1937                 }
1938                 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1939                 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1940                 return;
1941         }
1942
1943         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1944                 return;
1945
1946         os_memset(&data, 0, sizeof(data));
1947         os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1948         wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1949 }
1950
1951
1952 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1953                                       struct nlattr **tb)
1954 {
1955         u8 *addr;
1956         union wpa_event_data data;
1957
1958         if (tb[NL80211_ATTR_MAC] == NULL)
1959                 return;
1960         addr = nla_data(tb[NL80211_ATTR_MAC]);
1961         wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1962                    MAC2STR(addr));
1963
1964         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1965                 drv_event_disassoc(drv->ctx, addr);
1966                 return;
1967         }
1968
1969         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1970                 return;
1971
1972         os_memset(&data, 0, sizeof(data));
1973         os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1974         wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1975 }
1976
1977
1978 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1979                                         struct nlattr **tb)
1980 {
1981         struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1982         static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1983                 [NL80211_REKEY_DATA_KEK] = {
1984                         .minlen = NL80211_KEK_LEN,
1985                         .maxlen = NL80211_KEK_LEN,
1986                 },
1987                 [NL80211_REKEY_DATA_KCK] = {
1988                         .minlen = NL80211_KCK_LEN,
1989                         .maxlen = NL80211_KCK_LEN,
1990                 },
1991                 [NL80211_REKEY_DATA_REPLAY_CTR] = {
1992                         .minlen = NL80211_REPLAY_CTR_LEN,
1993                         .maxlen = NL80211_REPLAY_CTR_LEN,
1994                 },
1995         };
1996         union wpa_event_data data;
1997
1998         if (!tb[NL80211_ATTR_MAC])
1999                 return;
2000         if (!tb[NL80211_ATTR_REKEY_DATA])
2001                 return;
2002         if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
2003                              tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
2004                 return;
2005         if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
2006                 return;
2007
2008         os_memset(&data, 0, sizeof(data));
2009         data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
2010         wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
2011                    MAC2STR(data.driver_gtk_rekey.bssid));
2012         data.driver_gtk_rekey.replay_ctr =
2013                 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
2014         wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
2015                     data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
2016         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
2017 }
2018
2019
2020 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
2021                                           struct nlattr **tb)
2022 {
2023         struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
2024         static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
2025                 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
2026                 [NL80211_PMKSA_CANDIDATE_BSSID] = {
2027                         .minlen = ETH_ALEN,
2028                         .maxlen = ETH_ALEN,
2029                 },
2030                 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
2031         };
2032         union wpa_event_data data;
2033
2034         if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
2035                 return;
2036         if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
2037                              tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
2038                 return;
2039         if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
2040             !cand[NL80211_PMKSA_CANDIDATE_BSSID])
2041                 return;
2042
2043         os_memset(&data, 0, sizeof(data));
2044         os_memcpy(data.pmkid_candidate.bssid,
2045                   nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
2046         data.pmkid_candidate.index =
2047                 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
2048         data.pmkid_candidate.preauth =
2049                 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
2050         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
2051 }
2052
2053
2054 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
2055                                        struct nlattr **tb)
2056 {
2057         union wpa_event_data data;
2058
2059         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
2060                 return;
2061
2062         os_memset(&data, 0, sizeof(data));
2063         os_memcpy(data.client_poll.addr,
2064                   nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2065
2066         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
2067 }
2068
2069
2070 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
2071                                    int wds)
2072 {
2073         struct wpa_driver_nl80211_data *drv = bss->drv;
2074         union wpa_event_data event;
2075
2076         if (!tb[NL80211_ATTR_MAC])
2077                 return;
2078
2079         os_memset(&event, 0, sizeof(event));
2080         event.rx_from_unknown.bssid = bss->addr;
2081         event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
2082         event.rx_from_unknown.wds = wds;
2083
2084         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2085 }
2086
2087
2088 static void do_process_drv_event(struct wpa_driver_nl80211_data *drv,
2089                                  int cmd, struct nlattr **tb)
2090 {
2091         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
2092             (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
2093              cmd == NL80211_CMD_SCAN_ABORTED)) {
2094                 wpa_driver_nl80211_set_mode(&drv->first_bss,
2095                                             drv->ap_scan_as_station);
2096                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2097         }
2098
2099         switch (cmd) {
2100         case NL80211_CMD_TRIGGER_SCAN:
2101                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
2102                 break;
2103         case NL80211_CMD_START_SCHED_SCAN:
2104                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
2105                 break;
2106         case NL80211_CMD_SCHED_SCAN_STOPPED:
2107                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
2108                 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
2109                 break;
2110         case NL80211_CMD_NEW_SCAN_RESULTS:
2111                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
2112                 drv->scan_complete_events = 1;
2113                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2114                                      drv->ctx);
2115                 send_scan_event(drv, 0, tb);
2116                 break;
2117         case NL80211_CMD_SCHED_SCAN_RESULTS:
2118                 wpa_printf(MSG_DEBUG,
2119                            "nl80211: New sched scan results available");
2120                 send_scan_event(drv, 0, tb);
2121                 break;
2122         case NL80211_CMD_SCAN_ABORTED:
2123                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
2124                 /*
2125                  * Need to indicate that scan results are available in order
2126                  * not to make wpa_supplicant stop its scanning.
2127                  */
2128                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2129                                      drv->ctx);
2130                 send_scan_event(drv, 1, tb);
2131                 break;
2132         case NL80211_CMD_AUTHENTICATE:
2133         case NL80211_CMD_ASSOCIATE:
2134         case NL80211_CMD_DEAUTHENTICATE:
2135         case NL80211_CMD_DISASSOCIATE:
2136         case NL80211_CMD_FRAME_TX_STATUS:
2137         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
2138         case NL80211_CMD_UNPROT_DISASSOCIATE:
2139                 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME],
2140                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2141                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2142                            tb[NL80211_ATTR_COOKIE],
2143                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2144                 break;
2145         case NL80211_CMD_CONNECT:
2146         case NL80211_CMD_ROAM:
2147                 mlme_event_connect(drv, cmd,
2148                                    tb[NL80211_ATTR_STATUS_CODE],
2149                                    tb[NL80211_ATTR_MAC],
2150                                    tb[NL80211_ATTR_REQ_IE],
2151                                    tb[NL80211_ATTR_RESP_IE]);
2152                 break;
2153         case NL80211_CMD_CH_SWITCH_NOTIFY:
2154                 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ],
2155                                      tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2156                 break;
2157         case NL80211_CMD_DISCONNECT:
2158                 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
2159                                       tb[NL80211_ATTR_MAC],
2160                                       tb[NL80211_ATTR_DISCONNECTED_BY_AP]);
2161                 break;
2162         case NL80211_CMD_MICHAEL_MIC_FAILURE:
2163                 mlme_event_michael_mic_failure(drv, tb);
2164                 break;
2165         case NL80211_CMD_JOIN_IBSS:
2166                 mlme_event_join_ibss(drv, tb);
2167                 break;
2168         case NL80211_CMD_REMAIN_ON_CHANNEL:
2169                 mlme_event_remain_on_channel(drv, 0, tb);
2170                 break;
2171         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
2172                 mlme_event_remain_on_channel(drv, 1, tb);
2173                 break;
2174         case NL80211_CMD_NOTIFY_CQM:
2175                 nl80211_cqm_event(drv, tb);
2176                 break;
2177         case NL80211_CMD_REG_CHANGE:
2178                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
2179                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2180                                      NULL);
2181                 break;
2182         case NL80211_CMD_REG_BEACON_HINT:
2183                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
2184                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2185                                      NULL);
2186                 break;
2187         case NL80211_CMD_NEW_STATION:
2188                 nl80211_new_station_event(drv, tb);
2189                 break;
2190         case NL80211_CMD_DEL_STATION:
2191                 nl80211_del_station_event(drv, tb);
2192                 break;
2193         case NL80211_CMD_SET_REKEY_OFFLOAD:
2194                 nl80211_rekey_offload_event(drv, tb);
2195                 break;
2196         case NL80211_CMD_PMKSA_CANDIDATE:
2197                 nl80211_pmksa_candidate_event(drv, tb);
2198                 break;
2199         case NL80211_CMD_PROBE_CLIENT:
2200                 nl80211_client_probe_event(drv, tb);
2201                 break;
2202         default:
2203                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2204                            "(cmd=%d)", cmd);
2205                 break;
2206         }
2207 }
2208
2209
2210 static int process_drv_event(struct nl_msg *msg, void *arg)
2211 {
2212         struct wpa_driver_nl80211_data *drv = arg;
2213         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2214         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2215
2216         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2217                   genlmsg_attrlen(gnlh, 0), NULL);
2218
2219         if (tb[NL80211_ATTR_IFINDEX]) {
2220                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2221                 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
2222                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
2223                                    " for foreign interface (ifindex %d)",
2224                                    gnlh->cmd, ifindex);
2225                         return NL_SKIP;
2226                 }
2227         }
2228
2229         do_process_drv_event(drv, gnlh->cmd, tb);
2230         return NL_SKIP;
2231 }
2232
2233
2234 static int process_global_event(struct nl_msg *msg, void *arg)
2235 {
2236         struct nl80211_global *global = arg;
2237         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2238         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2239         struct wpa_driver_nl80211_data *drv, *tmp;
2240         int ifidx = -1;
2241
2242         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2243                   genlmsg_attrlen(gnlh, 0), NULL);
2244
2245         if (tb[NL80211_ATTR_IFINDEX])
2246                 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2247
2248         dl_list_for_each_safe(drv, tmp, &global->interfaces,
2249                               struct wpa_driver_nl80211_data, list) {
2250                 if (ifidx == -1 || ifidx == drv->ifindex ||
2251                     have_ifidx(drv, ifidx))
2252                         do_process_drv_event(drv, gnlh->cmd, tb);
2253         }
2254
2255         return NL_SKIP;
2256 }
2257
2258
2259 static int process_bss_event(struct nl_msg *msg, void *arg)
2260 {
2261         struct i802_bss *bss = arg;
2262         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2263         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2264
2265         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2266                   genlmsg_attrlen(gnlh, 0), NULL);
2267
2268         switch (gnlh->cmd) {
2269         case NL80211_CMD_FRAME:
2270         case NL80211_CMD_FRAME_TX_STATUS:
2271                 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
2272                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2273                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2274                            tb[NL80211_ATTR_COOKIE],
2275                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2276                 break;
2277         case NL80211_CMD_UNEXPECTED_FRAME:
2278                 nl80211_spurious_frame(bss, tb, 0);
2279                 break;
2280         case NL80211_CMD_UNEXPECTED_4ADDR_FRAME:
2281                 nl80211_spurious_frame(bss, tb, 1);
2282                 break;
2283         default:
2284                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2285                            "(cmd=%d)", gnlh->cmd);
2286                 break;
2287         }
2288
2289         return NL_SKIP;
2290 }
2291
2292
2293 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
2294                                              void *handle)
2295 {
2296         struct nl_cb *cb = eloop_ctx;
2297
2298         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
2299
2300         nl_recvmsgs(handle, cb);
2301 }
2302
2303
2304 /**
2305  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
2306  * @priv: driver_nl80211 private data
2307  * @alpha2_arg: country to which to switch to
2308  * Returns: 0 on success, -1 on failure
2309  *
2310  * This asks nl80211 to set the regulatory domain for given
2311  * country ISO / IEC alpha2.
2312  */
2313 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
2314 {
2315         struct i802_bss *bss = priv;
2316         struct wpa_driver_nl80211_data *drv = bss->drv;
2317         char alpha2[3];
2318         struct nl_msg *msg;
2319
2320         msg = nlmsg_alloc();
2321         if (!msg)
2322                 return -ENOMEM;
2323
2324         alpha2[0] = alpha2_arg[0];
2325         alpha2[1] = alpha2_arg[1];
2326         alpha2[2] = '\0';
2327
2328         nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
2329
2330         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
2331         if (send_and_recv_msgs(drv, msg, NULL, NULL))
2332                 return -EINVAL;
2333         return 0;
2334 nla_put_failure:
2335         nlmsg_free(msg);
2336         return -EINVAL;
2337 }
2338
2339
2340 struct wiphy_info_data {
2341         struct wpa_driver_capa *capa;
2342
2343         unsigned int error:1;
2344         unsigned int device_ap_sme:1;
2345         unsigned int poll_command_supported:1;
2346         unsigned int data_tx_status:1;
2347         unsigned int monitor_supported:1;
2348 };
2349
2350
2351 static unsigned int probe_resp_offload_support(int supp_protocols)
2352 {
2353         unsigned int prot = 0;
2354
2355         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
2356                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
2357         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
2358                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
2359         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
2360                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
2361         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
2362                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
2363
2364         return prot;
2365 }
2366
2367
2368 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
2369 {
2370         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2371         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2372         struct wiphy_info_data *info = arg;
2373         int p2p_go_supported = 0, p2p_client_supported = 0;
2374         int p2p_concurrent = 0;
2375         int auth_supported = 0, connect_supported = 0;
2376         struct wpa_driver_capa *capa = info->capa;
2377         static struct nla_policy
2378         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2379                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2380                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2381                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
2382                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
2383         },
2384         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2385                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2386                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2387         };
2388
2389         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2390                   genlmsg_attrlen(gnlh, 0), NULL);
2391
2392         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
2393                 capa->max_scan_ssids =
2394                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
2395
2396         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
2397                 capa->max_sched_scan_ssids =
2398                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
2399
2400         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
2401                 capa->max_match_sets =
2402                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
2403
2404         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
2405                 struct nlattr *nl_mode;
2406                 int i;
2407                 nla_for_each_nested(nl_mode,
2408                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
2409                         switch (nla_type(nl_mode)) {
2410                         case NL80211_IFTYPE_AP:
2411                                 capa->flags |= WPA_DRIVER_FLAGS_AP;
2412                                 break;
2413                         case NL80211_IFTYPE_P2P_GO:
2414                                 p2p_go_supported = 1;
2415                                 break;
2416                         case NL80211_IFTYPE_P2P_CLIENT:
2417                                 p2p_client_supported = 1;
2418                                 break;
2419                         case NL80211_IFTYPE_MONITOR:
2420                                 info->monitor_supported = 1;
2421                                 break;
2422                         }
2423                 }
2424         }
2425
2426         if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
2427                 struct nlattr *nl_combi;
2428                 int rem_combi;
2429
2430                 nla_for_each_nested(nl_combi,
2431                                     tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
2432                                     rem_combi) {
2433                         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
2434                         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
2435                         struct nlattr *nl_limit, *nl_mode;
2436                         int err, rem_limit, rem_mode;
2437                         int combination_has_p2p = 0, combination_has_mgd = 0;
2438
2439                         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
2440                                                nl_combi,
2441                                                iface_combination_policy);
2442                         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
2443                             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
2444                             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
2445                                 goto broken_combination;
2446
2447                         nla_for_each_nested(nl_limit,
2448                                             tb_comb[NL80211_IFACE_COMB_LIMITS],
2449                                             rem_limit) {
2450                                 err = nla_parse_nested(tb_limit,
2451                                                        MAX_NL80211_IFACE_LIMIT,
2452                                                        nl_limit,
2453                                                        iface_limit_policy);
2454                                 if (err ||
2455                                     !tb_limit[NL80211_IFACE_LIMIT_TYPES])
2456                                         goto broken_combination;
2457
2458                                 nla_for_each_nested(
2459                                         nl_mode,
2460                                         tb_limit[NL80211_IFACE_LIMIT_TYPES],
2461                                         rem_mode) {
2462                                         int ift = nla_type(nl_mode);
2463                                         if (ift == NL80211_IFTYPE_P2P_GO ||
2464                                             ift == NL80211_IFTYPE_P2P_CLIENT)
2465                                                 combination_has_p2p = 1;
2466                                         if (ift == NL80211_IFTYPE_STATION)
2467                                                 combination_has_mgd = 1;
2468                                 }
2469                                 if (combination_has_p2p && combination_has_mgd)
2470                                         break;
2471                         }
2472
2473                         if (combination_has_p2p && combination_has_mgd) {
2474                                 p2p_concurrent = 1;
2475                                 break;
2476                         }
2477
2478 broken_combination:
2479                         ;
2480                 }
2481         }
2482
2483         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
2484                 struct nlattr *nl_cmd;
2485                 int i;
2486
2487                 nla_for_each_nested(nl_cmd,
2488                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
2489                         switch (nla_get_u32(nl_cmd)) {
2490                         case NL80211_CMD_AUTHENTICATE:
2491                                 auth_supported = 1;
2492                                 break;
2493                         case NL80211_CMD_CONNECT:
2494                                 connect_supported = 1;
2495                                 break;
2496                         case NL80211_CMD_START_SCHED_SCAN:
2497                                 capa->sched_scan_supported = 1;
2498                                 break;
2499                         case NL80211_CMD_PROBE_CLIENT:
2500                                 info->poll_command_supported = 1;
2501                                 break;
2502                         }
2503                 }
2504         }
2505
2506         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
2507                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
2508                            "off-channel TX");
2509                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
2510         }
2511
2512         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
2513                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
2514                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
2515         }
2516
2517         /* default to 5000 since early versions of mac80211 don't set it */
2518         capa->max_remain_on_chan = 5000;
2519
2520         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
2521                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
2522
2523         if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
2524                 capa->max_remain_on_chan =
2525                         nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
2526
2527         if (auth_supported)
2528                 capa->flags |= WPA_DRIVER_FLAGS_SME;
2529         else if (!connect_supported) {
2530                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
2531                            "authentication/association or connect commands");
2532                 info->error = 1;
2533         }
2534
2535         if (p2p_go_supported && p2p_client_supported)
2536                 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
2537         if (p2p_concurrent) {
2538                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
2539                            "interface (driver advertised support)");
2540                 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
2541                 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
2542         }
2543
2544         if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
2545                 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2546                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2547
2548                 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
2549                         wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2550                         capa->flags |=
2551                                 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2552                 }
2553         }
2554
2555         if (tb[NL80211_ATTR_DEVICE_AP_SME])
2556                 info->device_ap_sme = 1;
2557
2558         if (tb[NL80211_ATTR_FEATURE_FLAGS]) {
2559                 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]);
2560
2561                 if (flags & NL80211_FEATURE_SK_TX_STATUS)
2562                         info->data_tx_status = 1;
2563
2564                 if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
2565                         capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
2566         }
2567
2568         if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) {
2569                 int protocols =
2570                         nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
2571                 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response "
2572                            "offload in AP mode");
2573                 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
2574                 capa->probe_resp_offloads =
2575                         probe_resp_offload_support(protocols);
2576         }
2577
2578         return NL_SKIP;
2579 }
2580
2581
2582 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
2583                                        struct wiphy_info_data *info)
2584 {
2585         struct nl_msg *msg;
2586
2587         os_memset(info, 0, sizeof(*info));
2588         info->capa = &drv->capa;
2589
2590         msg = nlmsg_alloc();
2591         if (!msg)
2592                 return -1;
2593
2594         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
2595
2596         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
2597
2598         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2599                 return 0;
2600         msg = NULL;
2601 nla_put_failure:
2602         nlmsg_free(msg);
2603         return -1;
2604 }
2605
2606
2607 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2608 {
2609         struct wiphy_info_data info;
2610         if (wpa_driver_nl80211_get_info(drv, &info))
2611                 return -1;
2612
2613         if (info.error)
2614                 return -1;
2615
2616         drv->has_capability = 1;
2617         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2618         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2619                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2620                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2621                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2622         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2623                 WPA_DRIVER_CAPA_ENC_WEP104 |
2624                 WPA_DRIVER_CAPA_ENC_TKIP |
2625                 WPA_DRIVER_CAPA_ENC_CCMP;
2626         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2627                 WPA_DRIVER_AUTH_SHARED |
2628                 WPA_DRIVER_AUTH_LEAP;
2629
2630         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2631         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2632         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2633
2634         if (!info.device_ap_sme) {
2635                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2636
2637                 /*
2638                  * No AP SME is currently assumed to also indicate no AP MLME
2639                  * in the driver/firmware.
2640                  */
2641                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
2642         }
2643
2644         drv->device_ap_sme = info.device_ap_sme;
2645         drv->poll_command_supported = info.poll_command_supported;
2646         drv->data_tx_status = info.data_tx_status;
2647
2648         /*
2649          * If poll command is supported mac80211 is new enough to
2650          * have everything we need to not need monitor interfaces.
2651          */
2652         drv->use_monitor = !info.poll_command_supported;
2653
2654         if (drv->device_ap_sme && drv->use_monitor) {
2655                 /*
2656                  * Non-mac80211 drivers may not support monitor interface.
2657                  * Make sure we do not get stuck with incorrect capability here
2658                  * by explicitly testing this.
2659                  */
2660                 if (!info.monitor_supported) {
2661                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
2662                                    "with device_ap_sme since no monitor mode "
2663                                    "support detected");
2664                         drv->use_monitor = 0;
2665                 }
2666         }
2667
2668         /*
2669          * If we aren't going to use monitor interfaces, but the
2670          * driver doesn't support data TX status, we won't get TX
2671          * status for EAPOL frames.
2672          */
2673         if (!drv->use_monitor && !info.data_tx_status)
2674                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2675
2676         return 0;
2677 }
2678
2679
2680 #ifdef ANDROID
2681 static int android_genl_ctrl_resolve(struct nl_handle *handle,
2682                                      const char *name)
2683 {
2684         /*
2685          * Android ICS has very minimal genl_ctrl_resolve() implementation, so
2686          * need to work around that.
2687          */
2688         struct nl_cache *cache = NULL;
2689         struct genl_family *nl80211 = NULL;
2690         int id = -1;
2691
2692         if (genl_ctrl_alloc_cache(handle, &cache) < 0) {
2693                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
2694                            "netlink cache");
2695                 goto fail;
2696         }
2697
2698         nl80211 = genl_ctrl_search_by_name(cache, name);
2699         if (nl80211 == NULL)
2700                 goto fail;
2701
2702         id = genl_family_get_id(nl80211);
2703
2704 fail:
2705         if (nl80211)
2706                 genl_family_put(nl80211);
2707         if (cache)
2708                 nl_cache_free(cache);
2709
2710         return id;
2711 }
2712 #define genl_ctrl_resolve android_genl_ctrl_resolve
2713 #endif /* ANDROID */
2714
2715
2716 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2717 {
2718         int ret;
2719
2720         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2721         if (global->nl_cb == NULL) {
2722                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2723                            "callbacks");
2724                 return -1;
2725         }
2726
2727         global->nl = nl_create_handle(global->nl_cb, "nl");
2728         if (global->nl == NULL)
2729                 goto err;
2730
2731         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
2732         if (global->nl80211_id < 0) {
2733                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2734                            "found");
2735                 goto err;
2736         }
2737
2738         global->nl_event = nl_create_handle(global->nl_cb, "event");
2739         if (global->nl_event == NULL)
2740                 goto err;
2741
2742         ret = nl_get_multicast_id(global, "nl80211", "scan");
2743         if (ret >= 0)
2744                 ret = nl_socket_add_membership(global->nl_event, ret);
2745         if (ret < 0) {
2746                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2747                            "membership for scan events: %d (%s)",
2748                            ret, strerror(-ret));
2749                 goto err;
2750         }
2751
2752         ret = nl_get_multicast_id(global, "nl80211", "mlme");
2753         if (ret >= 0)
2754                 ret = nl_socket_add_membership(global->nl_event, ret);
2755         if (ret < 0) {
2756                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2757                            "membership for mlme events: %d (%s)",
2758                            ret, strerror(-ret));
2759                 goto err;
2760         }
2761
2762         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
2763         if (ret >= 0)
2764                 ret = nl_socket_add_membership(global->nl_event, ret);
2765         if (ret < 0) {
2766                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2767                            "membership for regulatory events: %d (%s)",
2768                            ret, strerror(-ret));
2769                 /* Continue without regulatory events */
2770         }
2771
2772         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2773                   no_seq_check, NULL);
2774         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2775                   process_global_event, global);
2776
2777         eloop_register_read_sock(nl_socket_get_fd(global->nl_event),
2778                                  wpa_driver_nl80211_event_receive,
2779                                  global->nl_cb, global->nl_event);
2780
2781         return 0;
2782
2783 err:
2784         nl_destroy_handles(&global->nl_event);
2785         nl_destroy_handles(&global->nl);
2786         nl_cb_put(global->nl_cb);
2787         global->nl_cb = NULL;
2788         return -1;
2789 }
2790
2791
2792 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2793 {
2794         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2795         if (!drv->nl_cb) {
2796                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
2797                 return -1;
2798         }
2799
2800         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2801                   no_seq_check, NULL);
2802         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2803                   process_drv_event, drv);
2804
2805         return 0;
2806 }
2807
2808
2809 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2810 {
2811         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2812         /*
2813          * This may be for any interface; use ifdown event to disable
2814          * interface.
2815          */
2816 }
2817
2818
2819 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2820 {
2821         struct wpa_driver_nl80211_data *drv = ctx;
2822         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2823         if (linux_set_iface_flags(drv->global->ioctl_sock,
2824                                   drv->first_bss.ifname, 1)) {
2825                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2826                            "after rfkill unblock");
2827                 return;
2828         }
2829         /* rtnetlink ifup handler will report interface as enabled */
2830 }
2831
2832
2833 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2834 {
2835         /* Find phy (radio) to which this interface belongs */
2836         char buf[90], *pos;
2837         int f, rv;
2838
2839         drv->phyname[0] = '\0';
2840         snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2841                  drv->first_bss.ifname);
2842         f = open(buf, O_RDONLY);
2843         if (f < 0) {
2844                 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2845                            buf, strerror(errno));
2846                 return;
2847         }
2848
2849         rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2850         close(f);
2851         if (rv < 0) {
2852                 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2853                            buf, strerror(errno));
2854                 return;
2855         }
2856
2857         drv->phyname[rv] = '\0';
2858         pos = os_strchr(drv->phyname, '\n');
2859         if (pos)
2860                 *pos = '\0';
2861         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2862                    drv->first_bss.ifname, drv->phyname);
2863 }
2864
2865
2866 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
2867                                                       void *eloop_ctx,
2868                                                       void *handle)
2869 {
2870         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2871         u8 data[2048];
2872         struct msghdr msg;
2873         struct iovec entry;
2874         u8 control[512];
2875         struct cmsghdr *cmsg;
2876         int res, found_ee = 0, found_wifi = 0, acked = 0;
2877         union wpa_event_data event;
2878
2879         memset(&msg, 0, sizeof(msg));
2880         msg.msg_iov = &entry;
2881         msg.msg_iovlen = 1;
2882         entry.iov_base = data;
2883         entry.iov_len = sizeof(data);
2884         msg.msg_control = &control;
2885         msg.msg_controllen = sizeof(control);
2886
2887         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
2888         /* if error or not fitting 802.3 header, return */
2889         if (res < 14)
2890                 return;
2891
2892         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
2893         {
2894                 if (cmsg->cmsg_level == SOL_SOCKET &&
2895                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
2896                         int *ack;
2897
2898                         found_wifi = 1;
2899                         ack = (void *)CMSG_DATA(cmsg);
2900                         acked = *ack;
2901                 }
2902
2903                 if (cmsg->cmsg_level == SOL_PACKET &&
2904                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
2905                         struct sock_extended_err *err =
2906                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
2907
2908                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
2909                                 found_ee = 1;
2910                 }
2911         }
2912
2913         if (!found_ee || !found_wifi)
2914                 return;
2915
2916         memset(&event, 0, sizeof(event));
2917         event.eapol_tx_status.dst = data;
2918         event.eapol_tx_status.data = data + 14;
2919         event.eapol_tx_status.data_len = res - 14;
2920         event.eapol_tx_status.ack = acked;
2921         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
2922 }
2923
2924
2925 static int nl80211_init_bss(struct i802_bss *bss)
2926 {
2927         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2928         if (!bss->nl_cb)
2929                 return -1;
2930
2931         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2932                   no_seq_check, NULL);
2933         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2934                   process_bss_event, bss);
2935
2936         return 0;
2937 }
2938
2939
2940 static void nl80211_destroy_bss(struct i802_bss *bss)
2941 {
2942         nl_cb_put(bss->nl_cb);
2943         bss->nl_cb = NULL;
2944 }
2945
2946
2947 /**
2948  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2949  * @ctx: context to be used when calling wpa_supplicant functions,
2950  * e.g., wpa_supplicant_event()
2951  * @ifname: interface name, e.g., wlan0
2952  * @global_priv: private driver global data from global_init()
2953  * Returns: Pointer to private data, %NULL on failure
2954  */
2955 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2956                                       void *global_priv)
2957 {
2958         struct wpa_driver_nl80211_data *drv;
2959         struct rfkill_config *rcfg;
2960         struct i802_bss *bss;
2961
2962         if (global_priv == NULL)
2963                 return NULL;
2964         drv = os_zalloc(sizeof(*drv));
2965         if (drv == NULL)
2966                 return NULL;
2967         drv->global = global_priv;
2968         drv->ctx = ctx;
2969         bss = &drv->first_bss;
2970         bss->drv = drv;
2971         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2972         drv->monitor_ifidx = -1;
2973         drv->monitor_sock = -1;
2974         drv->eapol_tx_sock = -1;
2975         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2976
2977         if (wpa_driver_nl80211_init_nl(drv)) {
2978                 os_free(drv);
2979                 return NULL;
2980         }
2981
2982         if (nl80211_init_bss(bss))
2983                 goto failed;
2984
2985         nl80211_get_phy_name(drv);
2986
2987         rcfg = os_zalloc(sizeof(*rcfg));
2988         if (rcfg == NULL)
2989                 goto failed;
2990         rcfg->ctx = drv;
2991         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
2992         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
2993         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
2994         drv->rfkill = rfkill_init(rcfg);
2995         if (drv->rfkill == NULL) {
2996                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
2997                 os_free(rcfg);
2998         }
2999
3000         if (wpa_driver_nl80211_finish_drv_init(drv))
3001                 goto failed;
3002
3003         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
3004         if (drv->eapol_tx_sock < 0)
3005                 goto failed;
3006
3007         if (drv->data_tx_status) {
3008                 int enabled = 1;
3009
3010                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
3011                                &enabled, sizeof(enabled)) < 0) {
3012                         wpa_printf(MSG_DEBUG,
3013                                 "nl80211: wifi status sockopt failed\n");
3014                         drv->data_tx_status = 0;
3015                         if (!drv->use_monitor)
3016                                 drv->capa.flags &=
3017                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3018                 } else {
3019                         eloop_register_read_sock(drv->eapol_tx_sock,
3020                                 wpa_driver_nl80211_handle_eapol_tx_status,
3021                                 drv, NULL);
3022                 }
3023         }
3024
3025         if (drv->global) {
3026                 dl_list_add(&drv->global->interfaces, &drv->list);
3027                 drv->in_interface_list = 1;
3028         }
3029
3030         return bss;
3031
3032 failed:
3033         wpa_driver_nl80211_deinit(bss);
3034         return NULL;
3035 }
3036
3037
3038 static int nl80211_register_frame(struct i802_bss *bss,
3039                                   struct nl_handle *nl_handle,
3040                                   u16 type, const u8 *match, size_t match_len)
3041 {
3042         struct wpa_driver_nl80211_data *drv = bss->drv;
3043         struct nl_msg *msg;
3044         int ret = -1;
3045
3046         msg = nlmsg_alloc();
3047         if (!msg)
3048                 return -1;
3049
3050         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p",
3051                    type, nl_handle);
3052         wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3053                     match, match_len);
3054
3055         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
3056
3057         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3058         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
3059         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
3060
3061         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
3062         msg = NULL;
3063         if (ret) {
3064                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
3065                            "failed (type=%u): ret=%d (%s)",
3066                            type, ret, strerror(-ret));
3067                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3068                             match, match_len);
3069                 goto nla_put_failure;
3070         }
3071         ret = 0;
3072 nla_put_failure:
3073         nlmsg_free(msg);
3074         return ret;
3075 }
3076
3077
3078 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
3079 {
3080         struct wpa_driver_nl80211_data *drv = bss->drv;
3081
3082         if (bss->nl_mgmt) {
3083                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
3084                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
3085                 return -1;
3086         }
3087
3088         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
3089         if (bss->nl_mgmt == NULL)
3090                 return -1;
3091
3092         eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt),
3093                                  wpa_driver_nl80211_event_receive, bss->nl_cb,
3094                                  bss->nl_mgmt);
3095
3096         return 0;
3097 }
3098
3099
3100 static int nl80211_register_action_frame(struct i802_bss *bss,
3101                                          const u8 *match, size_t match_len)
3102 {
3103         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
3104         return nl80211_register_frame(bss, bss->nl_mgmt,
3105                                       type, match, match_len);
3106 }
3107
3108
3109 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
3110 {
3111         struct wpa_driver_nl80211_data *drv = bss->drv;
3112
3113         if (nl80211_alloc_mgmt_handle(bss))
3114                 return -1;
3115         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
3116                    "handle %p", bss->nl_mgmt);
3117
3118 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
3119         /* GAS Initial Request */
3120         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
3121                 return -1;
3122         /* GAS Initial Response */
3123         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
3124                 return -1;
3125         /* GAS Comeback Request */
3126         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
3127                 return -1;
3128         /* GAS Comeback Response */
3129         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
3130                 return -1;
3131 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
3132 #ifdef CONFIG_P2P
3133         /* P2P Public Action */
3134         if (nl80211_register_action_frame(bss,
3135                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
3136                                           6) < 0)
3137                 return -1;
3138         /* P2P Action */
3139         if (nl80211_register_action_frame(bss,
3140                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
3141                                           5) < 0)
3142                 return -1;
3143 #endif /* CONFIG_P2P */
3144 #ifdef CONFIG_IEEE80211W
3145         /* SA Query Response */
3146         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
3147                 return -1;
3148 #endif /* CONFIG_IEEE80211W */
3149 #ifdef CONFIG_TDLS
3150         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
3151                 /* TDLS Discovery Response */
3152                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
3153                     0)
3154                         return -1;
3155         }
3156 #endif /* CONFIG_TDLS */
3157
3158         /* FT Action frames */
3159         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
3160                 return -1;
3161         else
3162                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
3163                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
3164
3165         /* WNM - BSS Transition Management Request */
3166         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
3167                 return -1;
3168
3169         return 0;
3170 }
3171
3172
3173 static int nl80211_register_spurious_class3(struct i802_bss *bss)
3174 {
3175         struct wpa_driver_nl80211_data *drv = bss->drv;
3176         struct nl_msg *msg;
3177         int ret = -1;
3178
3179         msg = nlmsg_alloc();
3180         if (!msg)
3181                 return -1;
3182
3183         nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
3184
3185         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3186
3187         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
3188         msg = NULL;
3189         if (ret) {
3190                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
3191                            "failed: ret=%d (%s)",
3192                            ret, strerror(-ret));
3193                 goto nla_put_failure;
3194         }
3195         ret = 0;
3196 nla_put_failure:
3197         nlmsg_free(msg);
3198         return ret;
3199 }
3200
3201
3202 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
3203 {
3204         static const int stypes[] = {
3205                 WLAN_FC_STYPE_AUTH,
3206                 WLAN_FC_STYPE_ASSOC_REQ,
3207                 WLAN_FC_STYPE_REASSOC_REQ,
3208                 WLAN_FC_STYPE_DISASSOC,
3209                 WLAN_FC_STYPE_DEAUTH,
3210                 WLAN_FC_STYPE_ACTION,
3211                 WLAN_FC_STYPE_PROBE_REQ,
3212 /* Beacon doesn't work as mac80211 doesn't currently allow
3213  * it, but it wouldn't really be the right thing anyway as
3214  * it isn't per interface ... maybe just dump the scan
3215  * results periodically for OLBC?
3216  */
3217 //              WLAN_FC_STYPE_BEACON,
3218         };
3219         unsigned int i;
3220
3221         if (nl80211_alloc_mgmt_handle(bss))
3222                 return -1;
3223         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3224                    "handle %p", bss->nl_mgmt);
3225
3226         for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) {
3227                 if (nl80211_register_frame(bss, bss->nl_mgmt,
3228                                            (WLAN_FC_TYPE_MGMT << 2) |
3229                                            (stypes[i] << 4),
3230                                            NULL, 0) < 0) {
3231                         goto out_err;
3232                 }
3233         }
3234
3235         if (nl80211_register_spurious_class3(bss))
3236                 goto out_err;
3237
3238         if (nl80211_get_wiphy_data_ap(bss) == NULL)
3239                 goto out_err;
3240
3241         return 0;
3242
3243 out_err:
3244         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3245         nl_destroy_handles(&bss->nl_mgmt);
3246         return -1;
3247 }
3248
3249
3250 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
3251 {
3252         if (nl80211_alloc_mgmt_handle(bss))
3253                 return -1;
3254         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3255                    "handle %p (device SME)", bss->nl_mgmt);
3256
3257         if (nl80211_register_frame(bss, bss->nl_mgmt,
3258                                    (WLAN_FC_TYPE_MGMT << 2) |
3259                                    (WLAN_FC_STYPE_ACTION << 4),
3260                                    NULL, 0) < 0)
3261                 goto out_err;
3262
3263         return 0;
3264
3265 out_err:
3266         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3267         nl_destroy_handles(&bss->nl_mgmt);
3268         return -1;
3269 }
3270
3271
3272 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
3273 {
3274         if (bss->nl_mgmt == NULL)
3275                 return;
3276         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
3277                    "(%s)", bss->nl_mgmt, reason);
3278         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3279         nl_destroy_handles(&bss->nl_mgmt);
3280
3281         nl80211_put_wiphy_data_ap(bss);
3282 }
3283
3284
3285 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
3286 {
3287         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
3288 }
3289
3290
3291 static int
3292 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
3293 {
3294         struct i802_bss *bss = &drv->first_bss;
3295         int send_rfkill_event = 0;
3296
3297         drv->ifindex = if_nametoindex(bss->ifname);
3298         drv->first_bss.ifindex = drv->ifindex;
3299
3300 #ifndef HOSTAPD
3301         /*
3302          * Make sure the interface starts up in station mode unless this is a
3303          * dynamically added interface (e.g., P2P) that was already configured
3304          * with proper iftype.
3305          */
3306         if (drv->ifindex != drv->global->if_add_ifindex &&
3307             wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
3308                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
3309                            "use managed mode");
3310                 return -1;
3311         }
3312
3313         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
3314                 if (rfkill_is_blocked(drv->rfkill)) {
3315                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
3316                                    "interface '%s' due to rfkill",
3317                                    bss->ifname);
3318                         drv->if_disabled = 1;
3319                         send_rfkill_event = 1;
3320                 } else {
3321                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
3322                                    "interface '%s' UP", bss->ifname);
3323                         return -1;
3324                 }
3325         }
3326
3327         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
3328                                1, IF_OPER_DORMANT);
3329 #endif /* HOSTAPD */
3330
3331         if (wpa_driver_nl80211_capa(drv))
3332                 return -1;
3333
3334         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
3335                                bss->addr))
3336                 return -1;
3337
3338         if (send_rfkill_event) {
3339                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
3340                                        drv, drv->ctx);
3341         }
3342
3343         return 0;
3344 }
3345
3346
3347 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
3348 {
3349         struct nl_msg *msg;
3350
3351         msg = nlmsg_alloc();
3352         if (!msg)
3353                 return -ENOMEM;
3354
3355         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
3356         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3357
3358         return send_and_recv_msgs(drv, msg, NULL, NULL);
3359  nla_put_failure:
3360         nlmsg_free(msg);
3361         return -ENOBUFS;
3362 }
3363
3364
3365 /**
3366  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
3367  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3368  *
3369  * Shut down driver interface and processing of driver events. Free
3370  * private data buffer if one was allocated in wpa_driver_nl80211_init().
3371  */
3372 static void wpa_driver_nl80211_deinit(void *priv)
3373 {
3374         struct i802_bss *bss = priv;
3375         struct wpa_driver_nl80211_data *drv = bss->drv;
3376
3377         bss->in_deinit = 1;
3378         if (drv->data_tx_status)
3379                 eloop_unregister_read_sock(drv->eapol_tx_sock);
3380         if (drv->eapol_tx_sock >= 0)
3381                 close(drv->eapol_tx_sock);
3382
3383         if (bss->nl_preq)
3384                 wpa_driver_nl80211_probe_req_report(bss, 0);
3385         if (bss->added_if_into_bridge) {
3386                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
3387                                     bss->ifname) < 0)
3388                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3389                                    "interface %s from bridge %s: %s",
3390                                    bss->ifname, bss->brname, strerror(errno));
3391         }
3392         if (bss->added_bridge) {
3393                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
3394                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3395                                    "bridge %s: %s",
3396                                    bss->brname, strerror(errno));
3397         }
3398
3399         nl80211_remove_monitor_interface(drv);
3400
3401         if (is_ap_interface(drv->nlmode))
3402                 wpa_driver_nl80211_del_beacon(drv);
3403
3404 #ifdef HOSTAPD
3405         if (drv->last_freq_ht) {
3406                 /* Clear HT flags from the driver */
3407                 struct hostapd_freq_params freq;
3408                 os_memset(&freq, 0, sizeof(freq));
3409                 freq.freq = drv->last_freq;
3410                 i802_set_freq(priv, &freq);
3411         }
3412
3413         if (drv->eapol_sock >= 0) {
3414                 eloop_unregister_read_sock(drv->eapol_sock);
3415                 close(drv->eapol_sock);
3416         }
3417
3418         if (drv->if_indices != drv->default_if_indices)
3419                 os_free(drv->if_indices);
3420 #endif /* HOSTAPD */
3421
3422         if (drv->disabled_11b_rates)
3423                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3424
3425         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
3426                                IF_OPER_UP);
3427         rfkill_deinit(drv->rfkill);
3428
3429         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3430
3431         (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
3432         wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
3433         nl80211_mgmt_unsubscribe(bss, "deinit");
3434
3435         nl_cb_put(drv->nl_cb);
3436
3437         nl80211_destroy_bss(&drv->first_bss);
3438
3439         os_free(drv->filter_ssids);
3440
3441         os_free(drv->auth_ie);
3442
3443         if (drv->in_interface_list)
3444                 dl_list_del(&drv->list);
3445
3446         os_free(drv);
3447 }
3448
3449
3450 /**
3451  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
3452  * @eloop_ctx: Driver private data
3453  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
3454  *
3455  * This function can be used as registered timeout when starting a scan to
3456  * generate a scan completed event if the driver does not report this.
3457  */
3458 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
3459 {
3460         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3461         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
3462                 wpa_driver_nl80211_set_mode(&drv->first_bss,
3463                                             drv->ap_scan_as_station);
3464                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
3465         }
3466         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
3467         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
3468 }
3469
3470
3471 static struct nl_msg *
3472 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
3473                     struct wpa_driver_scan_params *params)
3474 {
3475         struct nl_msg *msg;
3476         int err;
3477         size_t i;
3478
3479         msg = nlmsg_alloc();
3480         if (!msg)
3481                 return NULL;
3482
3483         nl80211_cmd(drv, msg, 0, cmd);
3484
3485         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) < 0)
3486                 goto fail;
3487
3488         if (params->num_ssids) {
3489                 struct nl_msg *ssids = nlmsg_alloc();
3490                 if (ssids == NULL)
3491                         goto fail;
3492                 for (i = 0; i < params->num_ssids; i++) {
3493                         wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
3494                                           params->ssids[i].ssid,
3495                                           params->ssids[i].ssid_len);
3496                         if (nla_put(ssids, i + 1, params->ssids[i].ssid_len,
3497                                     params->ssids[i].ssid) < 0) {
3498                                 nlmsg_free(ssids);
3499                                 goto fail;
3500                         }
3501                 }
3502                 err = nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3503                 nlmsg_free(ssids);
3504                 if (err < 0)
3505                         goto fail;
3506         }
3507
3508         if (params->extra_ies) {
3509                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
3510                             params->extra_ies, params->extra_ies_len);
3511                 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
3512                             params->extra_ies) < 0)
3513                         goto fail;
3514         }
3515
3516         if (params->freqs) {
3517                 struct nl_msg *freqs = nlmsg_alloc();
3518                 if (freqs == NULL)
3519                         goto fail;
3520                 for (i = 0; params->freqs[i]; i++) {
3521                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3522                                    "MHz", params->freqs[i]);
3523                         if (nla_put_u32(freqs, i + 1, params->freqs[i]) < 0) {
3524                                 nlmsg_free(freqs);
3525                                 goto fail;
3526                         }
3527                 }
3528                 err = nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES,
3529                                      freqs);
3530                 nlmsg_free(freqs);
3531                 if (err < 0)
3532                         goto fail;
3533         }
3534
3535         os_free(drv->filter_ssids);
3536         drv->filter_ssids = params->filter_ssids;
3537         params->filter_ssids = NULL;
3538         drv->num_filter_ssids = params->num_filter_ssids;
3539
3540         return msg;
3541
3542 fail:
3543         nlmsg_free(msg);
3544         return NULL;
3545 }
3546
3547
3548 /**
3549  * wpa_driver_nl80211_scan - Request the driver to initiate scan
3550  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3551  * @params: Scan parameters
3552  * Returns: 0 on success, -1 on failure
3553  */
3554 static int wpa_driver_nl80211_scan(void *priv,
3555                                    struct wpa_driver_scan_params *params)
3556 {
3557         struct i802_bss *bss = priv;
3558         struct wpa_driver_nl80211_data *drv = bss->drv;
3559         int ret = -1, timeout;
3560         struct nl_msg *msg, *rates = NULL;
3561
3562         drv->scan_for_auth = 0;
3563
3564         msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params);
3565         if (!msg)
3566                 return -1;
3567
3568         if (params->p2p_probe) {
3569                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
3570
3571                 rates = nlmsg_alloc();
3572                 if (rates == NULL)
3573                         goto nla_put_failure;
3574
3575                 /*
3576                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
3577                  * by masking out everything else apart from the OFDM rates 6,
3578                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
3579                  * rates are left enabled.
3580                  */
3581                 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
3582                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
3583                 if (nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates) <
3584                     0)
3585                         goto nla_put_failure;
3586
3587                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
3588         }
3589
3590         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3591         msg = NULL;
3592         if (ret) {
3593                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
3594                            "(%s)", ret, strerror(-ret));
3595 #ifdef HOSTAPD
3596                 if (is_ap_interface(drv->nlmode)) {
3597                         /*
3598                          * mac80211 does not allow scan requests in AP mode, so
3599                          * try to do this in station mode.
3600                          */
3601                         if (wpa_driver_nl80211_set_mode(
3602                                     bss, NL80211_IFTYPE_STATION))
3603                                 goto nla_put_failure;
3604
3605                         if (wpa_driver_nl80211_scan(drv, params)) {
3606                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
3607                                 goto nla_put_failure;
3608                         }
3609
3610                         /* Restore AP mode when processing scan results */
3611                         drv->ap_scan_as_station = drv->nlmode;
3612                         ret = 0;
3613                 } else
3614                         goto nla_put_failure;
3615 #else /* HOSTAPD */
3616                 goto nla_put_failure;
3617 #endif /* HOSTAPD */
3618         }
3619
3620         /* Not all drivers generate "scan completed" wireless event, so try to
3621          * read results after a timeout. */
3622         timeout = 10;
3623         if (drv->scan_complete_events) {
3624                 /*
3625                  * The driver seems to deliver events to notify when scan is
3626                  * complete, so use longer timeout to avoid race conditions
3627                  * with scanning and following association request.
3628                  */
3629                 timeout = 30;
3630         }
3631         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
3632                    "seconds", ret, timeout);
3633         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3634         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
3635                                drv, drv->ctx);
3636
3637 nla_put_failure:
3638         nlmsg_free(msg);
3639         nlmsg_free(rates);
3640         return ret;
3641 }
3642
3643
3644 /**
3645  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
3646  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3647  * @params: Scan parameters
3648  * @interval: Interval between scan cycles in milliseconds
3649  * Returns: 0 on success, -1 on failure or if not supported
3650  */
3651 static int wpa_driver_nl80211_sched_scan(void *priv,
3652                                          struct wpa_driver_scan_params *params,
3653                                          u32 interval)
3654 {
3655         struct i802_bss *bss = priv;
3656         struct wpa_driver_nl80211_data *drv = bss->drv;
3657         int ret = -1;
3658         struct nl_msg *msg;
3659         struct nl_msg *match_set_ssid = NULL, *match_sets = NULL;
3660         struct nl_msg *match_set_rssi = NULL;
3661         size_t i;
3662
3663 #ifdef ANDROID
3664         if (!drv->capa.sched_scan_supported)
3665                 return android_pno_start(bss, params);
3666 #endif /* ANDROID */
3667
3668         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params);
3669         if (!msg)
3670                 goto nla_put_failure;
3671
3672         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
3673
3674         if ((drv->num_filter_ssids &&
3675             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
3676             params->filter_rssi) {
3677                 match_sets = nlmsg_alloc();
3678                 if (match_sets == NULL)
3679                         goto nla_put_failure;
3680
3681                 for (i = 0; i < drv->num_filter_ssids; i++) {
3682                         wpa_hexdump_ascii(MSG_MSGDUMP,
3683                                           "nl80211: Sched scan filter SSID",
3684                                           drv->filter_ssids[i].ssid,
3685                                           drv->filter_ssids[i].ssid_len);
3686
3687                         match_set_ssid = nlmsg_alloc();
3688                         if (match_set_ssid == NULL)
3689                                 goto nla_put_failure;
3690                         NLA_PUT(match_set_ssid,
3691                                 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
3692                                 drv->filter_ssids[i].ssid_len,
3693                                 drv->filter_ssids[i].ssid);
3694
3695                         if (nla_put_nested(match_sets, i + 1, match_set_ssid) <
3696                             0)
3697                                 goto nla_put_failure;
3698                 }
3699
3700                 if (params->filter_rssi) {
3701                         match_set_rssi = nlmsg_alloc();
3702                         if (match_set_rssi == NULL)
3703                                 goto nla_put_failure;
3704                         NLA_PUT_U32(match_set_rssi,
3705                                     NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
3706                                     params->filter_rssi);
3707                         wpa_printf(MSG_MSGDUMP,
3708                                    "nl80211: Sched scan RSSI filter %d dBm",
3709                                    params->filter_rssi);
3710                         if (nla_put_nested(match_sets, 0, match_set_rssi) < 0)
3711                                 goto nla_put_failure;
3712                 }
3713
3714                 if (nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
3715                                    match_sets) < 0)
3716                         goto nla_put_failure;
3717         }
3718
3719         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3720
3721         /* TODO: if we get an error here, we should fall back to normal scan */
3722
3723         msg = NULL;
3724         if (ret) {
3725                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
3726                            "ret=%d (%s)", ret, strerror(-ret));
3727                 goto nla_put_failure;
3728         }
3729
3730         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
3731                    "scan interval %d msec", ret, interval);
3732
3733 nla_put_failure:
3734         nlmsg_free(match_set_ssid);
3735         nlmsg_free(match_sets);
3736         nlmsg_free(match_set_rssi);
3737         nlmsg_free(msg);
3738         return ret;
3739 }
3740
3741
3742 /**
3743  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
3744  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3745  * Returns: 0 on success, -1 on failure or if not supported
3746  */
3747 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
3748 {
3749         struct i802_bss *bss = priv;
3750         struct wpa_driver_nl80211_data *drv = bss->drv;
3751         int ret = 0;
3752         struct nl_msg *msg;
3753
3754 #ifdef ANDROID
3755         if (!drv->capa.sched_scan_supported)
3756                 return android_pno_stop(bss);
3757 #endif /* ANDROID */
3758
3759         msg = nlmsg_alloc();
3760         if (!msg)
3761                 return -1;
3762
3763         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
3764
3765         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3766
3767         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3768         msg = NULL;
3769         if (ret) {
3770                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
3771                            "ret=%d (%s)", ret, strerror(-ret));
3772                 goto nla_put_failure;
3773         }
3774
3775         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
3776
3777 nla_put_failure:
3778         nlmsg_free(msg);
3779         return ret;
3780 }
3781
3782
3783 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
3784 {
3785         const u8 *end, *pos;
3786
3787         if (ies == NULL)
3788                 return NULL;
3789
3790         pos = ies;
3791         end = ies + ies_len;
3792
3793         while (pos + 1 < end) {
3794                 if (pos + 2 + pos[1] > end)
3795                         break;
3796                 if (pos[0] == ie)
3797                         return pos;
3798                 pos += 2 + pos[1];
3799         }
3800
3801         return NULL;
3802 }
3803
3804
3805 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
3806                                  const u8 *ie, size_t ie_len)
3807 {
3808         const u8 *ssid;
3809         size_t i;
3810
3811         if (drv->filter_ssids == NULL)
3812                 return 0;
3813
3814         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
3815         if (ssid == NULL)
3816                 return 1;
3817
3818         for (i = 0; i < drv->num_filter_ssids; i++) {
3819                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
3820                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
3821                     0)
3822                         return 0;
3823         }
3824
3825         return 1;
3826 }
3827
3828
3829 static int bss_info_handler(struct nl_msg *msg, void *arg)
3830 {
3831         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3832         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3833         struct nlattr *bss[NL80211_BSS_MAX + 1];
3834         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
3835                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
3836                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
3837                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
3838                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
3839                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
3840                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
3841                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
3842                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
3843                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
3844                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
3845                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
3846         };
3847         struct nl80211_bss_info_arg *_arg = arg;
3848         struct wpa_scan_results *res = _arg->res;
3849         struct wpa_scan_res **tmp;
3850         struct wpa_scan_res *r;
3851         const u8 *ie, *beacon_ie;
3852         size_t ie_len, beacon_ie_len;
3853         u8 *pos;
3854         size_t i;
3855
3856         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3857                   genlmsg_attrlen(gnlh, 0), NULL);
3858         if (!tb[NL80211_ATTR_BSS])
3859                 return NL_SKIP;
3860         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
3861                              bss_policy))
3862                 return NL_SKIP;
3863         if (bss[NL80211_BSS_STATUS]) {
3864                 enum nl80211_bss_status status;
3865                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3866                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3867                     bss[NL80211_BSS_FREQUENCY]) {
3868                         _arg->assoc_freq =
3869                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3870                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
3871                                    _arg->assoc_freq);
3872                 }
3873                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3874                     bss[NL80211_BSS_BSSID]) {
3875                         os_memcpy(_arg->assoc_bssid,
3876                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
3877                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
3878                                    MACSTR, MAC2STR(_arg->assoc_bssid));
3879                 }
3880         }
3881         if (!res)
3882                 return NL_SKIP;
3883         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
3884                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3885                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3886         } else {
3887                 ie = NULL;
3888                 ie_len = 0;
3889         }
3890         if (bss[NL80211_BSS_BEACON_IES]) {
3891                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
3892                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
3893         } else {
3894                 beacon_ie = NULL;
3895                 beacon_ie_len = 0;
3896         }
3897
3898         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
3899                                   ie ? ie_len : beacon_ie_len))
3900                 return NL_SKIP;
3901
3902         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3903         if (r == NULL)
3904                 return NL_SKIP;
3905         if (bss[NL80211_BSS_BSSID])
3906                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
3907                           ETH_ALEN);
3908         if (bss[NL80211_BSS_FREQUENCY])
3909                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3910         if (bss[NL80211_BSS_BEACON_INTERVAL])
3911                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
3912         if (bss[NL80211_BSS_CAPABILITY])
3913                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
3914         r->flags |= WPA_SCAN_NOISE_INVALID;
3915         if (bss[NL80211_BSS_SIGNAL_MBM]) {
3916                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
3917                 r->level /= 100; /* mBm to dBm */
3918                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
3919         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
3920                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
3921                 r->flags |= WPA_SCAN_QUAL_INVALID;
3922         } else
3923                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
3924         if (bss[NL80211_BSS_TSF])
3925                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
3926         if (bss[NL80211_BSS_SEEN_MS_AGO])
3927                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
3928         r->ie_len = ie_len;
3929         pos = (u8 *) (r + 1);
3930         if (ie) {
3931                 os_memcpy(pos, ie, ie_len);
3932                 pos += ie_len;
3933         }
3934         r->beacon_ie_len = beacon_ie_len;
3935         if (beacon_ie)
3936                 os_memcpy(pos, beacon_ie, beacon_ie_len);
3937
3938         if (bss[NL80211_BSS_STATUS]) {
3939                 enum nl80211_bss_status status;
3940                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3941                 switch (status) {
3942                 case NL80211_BSS_STATUS_AUTHENTICATED:
3943                         r->flags |= WPA_SCAN_AUTHENTICATED;
3944                         break;
3945                 case NL80211_BSS_STATUS_ASSOCIATED:
3946                         r->flags |= WPA_SCAN_ASSOCIATED;
3947                         break;
3948                 default:
3949                         break;
3950                 }
3951         }
3952
3953         /*
3954          * cfg80211 maintains separate BSS table entries for APs if the same
3955          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
3956          * not use frequency as a separate key in the BSS table, so filter out
3957          * duplicated entries. Prefer associated BSS entry in such a case in
3958          * order to get the correct frequency into the BSS table.
3959          */
3960         for (i = 0; i < res->num; i++) {
3961                 const u8 *s1, *s2;
3962                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3963                         continue;
3964
3965                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3966                                     res->res[i]->ie_len, WLAN_EID_SSID);
3967                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3968                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3969                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
3970                         continue;
3971
3972                 /* Same BSSID,SSID was already included in scan results */
3973                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3974                            "for " MACSTR, MAC2STR(r->bssid));
3975
3976                 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3977                     !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3978                         os_free(res->res[i]);
3979                         res->res[i] = r;
3980                 } else
3981                         os_free(r);
3982                 return NL_SKIP;
3983         }
3984
3985         tmp = os_realloc(res->res,
3986                          (res->num + 1) * sizeof(struct wpa_scan_res *));
3987         if (tmp == NULL) {
3988                 os_free(r);
3989                 return NL_SKIP;
3990         }
3991         tmp[res->num++] = r;
3992         res->res = tmp;
3993
3994         return NL_SKIP;
3995 }
3996
3997
3998 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
3999                                  const u8 *addr)
4000 {
4001         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
4002                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
4003                            "mismatch (" MACSTR ")", MAC2STR(addr));
4004                 wpa_driver_nl80211_mlme(drv, addr,
4005                                         NL80211_CMD_DEAUTHENTICATE,
4006                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
4007         }
4008 }
4009
4010
4011 static void wpa_driver_nl80211_check_bss_status(
4012         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
4013 {
4014         size_t i;
4015
4016         for (i = 0; i < res->num; i++) {
4017                 struct wpa_scan_res *r = res->res[i];
4018                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
4019                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4020                                    "indicates BSS status with " MACSTR
4021                                    " as authenticated",
4022                                    MAC2STR(r->bssid));
4023                         if (is_sta_interface(drv->nlmode) &&
4024                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
4025                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
4026                             0) {
4027                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
4028                                            " in local state (auth=" MACSTR
4029                                            " assoc=" MACSTR ")",
4030                                            MAC2STR(drv->auth_bssid),
4031                                            MAC2STR(drv->bssid));
4032                                 clear_state_mismatch(drv, r->bssid);
4033                         }
4034                 }
4035
4036                 if (r->flags & WPA_SCAN_ASSOCIATED) {
4037                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4038                                    "indicate BSS status with " MACSTR
4039                                    " as associated",
4040                                    MAC2STR(r->bssid));
4041                         if (is_sta_interface(drv->nlmode) &&
4042                             !drv->associated) {
4043                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4044                                            "(not associated) does not match "
4045                                            "with BSS state");
4046                                 clear_state_mismatch(drv, r->bssid);
4047                         } else if (is_sta_interface(drv->nlmode) &&
4048                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
4049                                    0) {
4050                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4051                                            "(associated with " MACSTR ") does "
4052                                            "not match with BSS state",
4053                                            MAC2STR(drv->bssid));
4054                                 clear_state_mismatch(drv, r->bssid);
4055                                 clear_state_mismatch(drv, drv->bssid);
4056                         }
4057                 }
4058         }
4059 }
4060
4061
4062 static struct wpa_scan_results *
4063 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
4064 {
4065         struct nl_msg *msg;
4066         struct wpa_scan_results *res;
4067         int ret;
4068         struct nl80211_bss_info_arg arg;
4069
4070         res = os_zalloc(sizeof(*res));
4071         if (res == NULL)
4072                 return NULL;
4073         msg = nlmsg_alloc();
4074         if (!msg)
4075                 goto nla_put_failure;
4076
4077         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
4078         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4079
4080         arg.drv = drv;
4081         arg.res = res;
4082         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
4083         msg = NULL;
4084         if (ret == 0) {
4085                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
4086                            "BSSes)", (unsigned long) res->num);
4087                 nl80211_get_noise_for_scan_results(drv, res);
4088                 return res;
4089         }
4090         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
4091                    "(%s)", ret, strerror(-ret));
4092 nla_put_failure:
4093         nlmsg_free(msg);
4094         wpa_scan_results_free(res);
4095         return NULL;
4096 }
4097
4098
4099 /**
4100  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
4101  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
4102  * Returns: Scan results on success, -1 on failure
4103  */
4104 static struct wpa_scan_results *
4105 wpa_driver_nl80211_get_scan_results(void *priv)
4106 {
4107         struct i802_bss *bss = priv;
4108         struct wpa_driver_nl80211_data *drv = bss->drv;
4109         struct wpa_scan_results *res;
4110
4111         res = nl80211_get_scan_results(drv);
4112         if (res)
4113                 wpa_driver_nl80211_check_bss_status(drv, res);
4114         return res;
4115 }
4116
4117
4118 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
4119 {
4120         struct wpa_scan_results *res;
4121         size_t i;
4122
4123         res = nl80211_get_scan_results(drv);
4124         if (res == NULL) {
4125                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
4126                 return;
4127         }
4128
4129         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
4130         for (i = 0; i < res->num; i++) {
4131                 struct wpa_scan_res *r = res->res[i];
4132                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
4133                            (int) i, (int) res->num, MAC2STR(r->bssid),
4134                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
4135                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
4136         }
4137
4138         wpa_scan_results_free(res);
4139 }
4140
4141
4142 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
4143                                       enum wpa_alg alg, const u8 *addr,
4144                                       int key_idx, int set_tx,
4145                                       const u8 *seq, size_t seq_len,
4146                                       const u8 *key, size_t key_len)
4147 {
4148         struct i802_bss *bss = priv;
4149         struct wpa_driver_nl80211_data *drv = bss->drv;
4150         int ifindex = if_nametoindex(ifname);
4151         struct nl_msg *msg;
4152         int ret;
4153
4154         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
4155                    "set_tx=%d seq_len=%lu key_len=%lu",
4156                    __func__, ifindex, alg, addr, key_idx, set_tx,
4157                    (unsigned long) seq_len, (unsigned long) key_len);
4158 #ifdef CONFIG_TDLS
4159         if (key_idx == -1)
4160                 key_idx = 0;
4161 #endif /* CONFIG_TDLS */
4162
4163         msg = nlmsg_alloc();
4164         if (!msg)
4165                 return -ENOMEM;
4166
4167         if (alg == WPA_ALG_NONE) {
4168                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
4169         } else {
4170                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
4171                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
4172                 switch (alg) {
4173                 case WPA_ALG_WEP:
4174                         if (key_len == 5)
4175                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4176                                             WLAN_CIPHER_SUITE_WEP40);
4177                         else
4178                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4179                                             WLAN_CIPHER_SUITE_WEP104);
4180                         break;
4181                 case WPA_ALG_TKIP:
4182                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4183                                     WLAN_CIPHER_SUITE_TKIP);
4184                         break;
4185                 case WPA_ALG_CCMP:
4186                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4187                                     WLAN_CIPHER_SUITE_CCMP);
4188                         break;
4189                 case WPA_ALG_IGTK:
4190                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4191                                     WLAN_CIPHER_SUITE_AES_CMAC);
4192                         break;
4193                 default:
4194                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4195                                    "algorithm %d", __func__, alg);
4196                         nlmsg_free(msg);
4197                         return -1;
4198                 }
4199         }
4200
4201         if (seq && seq_len)
4202                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
4203
4204         if (addr && !is_broadcast_ether_addr(addr)) {
4205                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
4206                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4207
4208                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
4209                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
4210                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
4211                                     NL80211_KEYTYPE_GROUP);
4212                 }
4213         } else if (addr && is_broadcast_ether_addr(addr)) {
4214                 struct nl_msg *types;
4215                 int err;
4216                 wpa_printf(MSG_DEBUG, "   broadcast key");
4217                 types = nlmsg_alloc();
4218                 if (!types)
4219                         goto nla_put_failure;
4220                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4221                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4222                                      types);
4223                 nlmsg_free(types);
4224                 if (err)
4225                         goto nla_put_failure;
4226         }
4227         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4228         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4229
4230         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4231         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
4232                 ret = 0;
4233         if (ret)
4234                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
4235                            ret, strerror(-ret));
4236
4237         /*
4238          * If we failed or don't need to set the default TX key (below),
4239          * we're done here.
4240          */
4241         if (ret || !set_tx || alg == WPA_ALG_NONE)
4242                 return ret;
4243         if (is_ap_interface(drv->nlmode) && addr &&
4244             !is_broadcast_ether_addr(addr))
4245                 return ret;
4246
4247         msg = nlmsg_alloc();
4248         if (!msg)
4249                 return -ENOMEM;
4250
4251         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
4252         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4253         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4254         if (alg == WPA_ALG_IGTK)
4255                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
4256         else
4257                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
4258         if (addr && is_broadcast_ether_addr(addr)) {
4259                 struct nl_msg *types;
4260                 int err;
4261                 types = nlmsg_alloc();
4262                 if (!types)
4263                         goto nla_put_failure;
4264                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4265                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4266                                      types);
4267                 nlmsg_free(types);
4268                 if (err)
4269                         goto nla_put_failure;
4270         } else if (addr) {
4271                 struct nl_msg *types;
4272                 int err;
4273                 types = nlmsg_alloc();
4274                 if (!types)
4275                         goto nla_put_failure;
4276                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
4277                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4278                                      types);
4279                 nlmsg_free(types);
4280                 if (err)
4281                         goto nla_put_failure;
4282         }
4283
4284         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4285         if (ret == -ENOENT)
4286                 ret = 0;
4287         if (ret)
4288                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
4289                            "err=%d %s)", ret, strerror(-ret));
4290         return ret;
4291
4292 nla_put_failure:
4293         nlmsg_free(msg);
4294         return -ENOBUFS;
4295 }
4296
4297
4298 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
4299                       int key_idx, int defkey,
4300                       const u8 *seq, size_t seq_len,
4301                       const u8 *key, size_t key_len)
4302 {
4303         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
4304         if (!key_attr)
4305                 return -1;
4306
4307         if (defkey && alg == WPA_ALG_IGTK)
4308                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
4309         else if (defkey)
4310                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4311
4312         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
4313
4314         switch (alg) {
4315         case WPA_ALG_WEP:
4316                 if (key_len == 5)
4317                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4318                                     WLAN_CIPHER_SUITE_WEP40);
4319                 else
4320                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4321                                     WLAN_CIPHER_SUITE_WEP104);
4322                 break;
4323         case WPA_ALG_TKIP:
4324                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
4325                 break;
4326         case WPA_ALG_CCMP:
4327                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
4328                 break;
4329         case WPA_ALG_IGTK:
4330                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4331                             WLAN_CIPHER_SUITE_AES_CMAC);
4332                 break;
4333         default:
4334                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4335                            "algorithm %d", __func__, alg);
4336                 return -1;
4337         }
4338
4339         if (seq && seq_len)
4340                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
4341
4342         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
4343
4344         nla_nest_end(msg, key_attr);
4345
4346         return 0;
4347  nla_put_failure:
4348         return -1;
4349 }
4350
4351
4352 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
4353                                  struct nl_msg *msg)
4354 {
4355         int i, privacy = 0;
4356         struct nlattr *nl_keys, *nl_key;
4357
4358         for (i = 0; i < 4; i++) {
4359                 if (!params->wep_key[i])
4360                         continue;
4361                 privacy = 1;
4362                 break;
4363         }
4364         if (params->wps == WPS_MODE_PRIVACY)
4365                 privacy = 1;
4366         if (params->pairwise_suite &&
4367             params->pairwise_suite != WPA_CIPHER_NONE)
4368                 privacy = 1;
4369
4370         if (!privacy)
4371                 return 0;
4372
4373         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4374
4375         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
4376         if (!nl_keys)
4377                 goto nla_put_failure;
4378
4379         for (i = 0; i < 4; i++) {
4380                 if (!params->wep_key[i])
4381                         continue;
4382
4383                 nl_key = nla_nest_start(msg, i);
4384                 if (!nl_key)
4385                         goto nla_put_failure;
4386
4387                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
4388                         params->wep_key[i]);
4389                 if (params->wep_key_len[i] == 5)
4390                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4391                                     WLAN_CIPHER_SUITE_WEP40);
4392                 else
4393                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4394                                     WLAN_CIPHER_SUITE_WEP104);
4395
4396                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
4397
4398                 if (i == params->wep_tx_keyidx)
4399                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4400
4401                 nla_nest_end(msg, nl_key);
4402         }
4403         nla_nest_end(msg, nl_keys);
4404
4405         return 0;
4406
4407 nla_put_failure:
4408         return -ENOBUFS;
4409 }
4410
4411
4412 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
4413                                    const u8 *addr, int cmd, u16 reason_code,
4414                                    int local_state_change)
4415 {
4416         int ret = -1;
4417         struct nl_msg *msg;
4418
4419         msg = nlmsg_alloc();
4420         if (!msg)
4421                 return -1;
4422
4423         nl80211_cmd(drv, msg, 0, cmd);
4424
4425         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4426         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4427         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4428         if (local_state_change)
4429                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4430
4431         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4432         msg = NULL;
4433         if (ret) {
4434                 wpa_dbg(drv->ctx, MSG_DEBUG,
4435                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
4436                         reason_code, ret, strerror(-ret));
4437                 goto nla_put_failure;
4438         }
4439         ret = 0;
4440
4441 nla_put_failure:
4442         nlmsg_free(msg);
4443         return ret;
4444 }
4445
4446
4447 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
4448                                          const u8 *addr, int reason_code)
4449 {
4450         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4451                    __func__, MAC2STR(addr), reason_code);
4452         drv->associated = 0;
4453         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
4454                                        reason_code, 0);
4455 }
4456
4457
4458 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
4459                                              int reason_code)
4460 {
4461         struct i802_bss *bss = priv;
4462         struct wpa_driver_nl80211_data *drv = bss->drv;
4463         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4464                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4465         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4466                    __func__, MAC2STR(addr), reason_code);
4467         drv->associated = 0;
4468         if (drv->nlmode == NL80211_IFTYPE_ADHOC)
4469                 return nl80211_leave_ibss(drv);
4470         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
4471                                        reason_code, 0);
4472 }
4473
4474
4475 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
4476                                            int reason_code)
4477 {
4478         struct i802_bss *bss = priv;
4479         struct wpa_driver_nl80211_data *drv = bss->drv;
4480         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4481                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4482         wpa_printf(MSG_DEBUG, "%s", __func__);
4483         drv->associated = 0;
4484         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
4485                                        reason_code, 0);
4486 }
4487
4488
4489 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
4490                                      struct wpa_driver_auth_params *params)
4491 {
4492         int i;
4493
4494         drv->auth_freq = params->freq;
4495         drv->auth_alg = params->auth_alg;
4496         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
4497         drv->auth_local_state_change = params->local_state_change;
4498         drv->auth_p2p = params->p2p;
4499
4500         if (params->bssid)
4501                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
4502         else
4503                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
4504
4505         if (params->ssid) {
4506                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
4507                 drv->auth_ssid_len = params->ssid_len;
4508         } else
4509                 drv->auth_ssid_len = 0;
4510
4511
4512         os_free(drv->auth_ie);
4513         drv->auth_ie = NULL;
4514         drv->auth_ie_len = 0;
4515         if (params->ie) {
4516                 drv->auth_ie = os_malloc(params->ie_len);
4517                 if (drv->auth_ie) {
4518                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
4519                         drv->auth_ie_len = params->ie_len;
4520                 }
4521         }
4522
4523         for (i = 0; i < 4; i++) {
4524                 if (params->wep_key[i] && params->wep_key_len[i] &&
4525                     params->wep_key_len[i] <= 16) {
4526                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
4527                                   params->wep_key_len[i]);
4528                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
4529                 } else
4530                         drv->auth_wep_key_len[i] = 0;
4531         }
4532 }
4533
4534
4535 static int wpa_driver_nl80211_authenticate(
4536         void *priv, struct wpa_driver_auth_params *params)
4537 {
4538         struct i802_bss *bss = priv;
4539         struct wpa_driver_nl80211_data *drv = bss->drv;
4540         int ret = -1, i;
4541         struct nl_msg *msg;
4542         enum nl80211_auth_type type;
4543         enum nl80211_iftype nlmode;
4544         int count = 0;
4545         int is_retry;
4546
4547         is_retry = drv->retry_auth;
4548         drv->retry_auth = 0;
4549
4550         drv->associated = 0;
4551         os_memset(drv->auth_bssid, 0, ETH_ALEN);
4552         /* FIX: IBSS mode */
4553         nlmode = params->p2p ?
4554                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4555         if (drv->nlmode != nlmode &&
4556             wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4557                 return -1;
4558
4559 retry:
4560         msg = nlmsg_alloc();
4561         if (!msg)
4562                 return -1;
4563
4564         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
4565                    drv->ifindex);
4566
4567         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
4568
4569         for (i = 0; i < 4; i++) {
4570                 if (!params->wep_key[i])
4571                         continue;
4572                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
4573                                            NULL, i,
4574                                            i == params->wep_tx_keyidx, NULL, 0,
4575                                            params->wep_key[i],
4576                                            params->wep_key_len[i]);
4577                 if (params->wep_tx_keyidx != i)
4578                         continue;
4579                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
4580                                params->wep_key[i], params->wep_key_len[i])) {
4581                         nlmsg_free(msg);
4582                         return -1;
4583                 }
4584         }
4585
4586         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4587         if (params->bssid) {
4588                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4589                            MAC2STR(params->bssid));
4590                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4591         }
4592         if (params->freq) {
4593                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4594                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4595         }
4596         if (params->ssid) {
4597                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4598                                   params->ssid, params->ssid_len);
4599                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4600                         params->ssid);
4601         }
4602         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
4603         if (params->ie)
4604                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
4605         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4606                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4607         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4608                 type = NL80211_AUTHTYPE_SHARED_KEY;
4609         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4610                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4611         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4612                 type = NL80211_AUTHTYPE_FT;
4613         else
4614                 goto nla_put_failure;
4615         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4616         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4617         if (params->local_state_change) {
4618                 wpa_printf(MSG_DEBUG, "  * Local state change only");
4619                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4620         }
4621
4622         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4623         msg = NULL;
4624         if (ret) {
4625                 wpa_dbg(drv->ctx, MSG_DEBUG,
4626                         "nl80211: MLME command failed (auth): ret=%d (%s)",
4627                         ret, strerror(-ret));
4628                 count++;
4629                 if (ret == -EALREADY && count == 1 && params->bssid &&
4630                     !params->local_state_change) {
4631                         /*
4632                          * mac80211 does not currently accept new
4633                          * authentication if we are already authenticated. As a
4634                          * workaround, force deauthentication and try again.
4635                          */
4636                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
4637                                    "after forced deauthentication");
4638                         wpa_driver_nl80211_deauthenticate(
4639                                 bss, params->bssid,
4640                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
4641                         nlmsg_free(msg);
4642                         goto retry;
4643                 }
4644
4645                 if (ret == -ENOENT && params->freq && !is_retry) {
4646                         /*
4647                          * cfg80211 has likely expired the BSS entry even
4648                          * though it was previously available in our internal
4649                          * BSS table. To recover quickly, start a single
4650                          * channel scan on the specified channel.
4651                          */
4652                         struct wpa_driver_scan_params scan;
4653                         int freqs[2];
4654
4655                         os_memset(&scan, 0, sizeof(scan));
4656                         scan.num_ssids = 1;
4657                         if (params->ssid) {
4658                                 scan.ssids[0].ssid = params->ssid;
4659                                 scan.ssids[0].ssid_len = params->ssid_len;
4660                         }
4661                         freqs[0] = params->freq;
4662                         freqs[1] = 0;
4663                         scan.freqs = freqs;
4664                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
4665                                    "channel scan to refresh cfg80211 BSS "
4666                                    "entry");
4667                         ret = wpa_driver_nl80211_scan(bss, &scan);
4668                         if (ret == 0) {
4669                                 nl80211_copy_auth_params(drv, params);
4670                                 drv->scan_for_auth = 1;
4671                         }
4672                 } else if (is_retry) {
4673                         /*
4674                          * Need to indicate this with an event since the return
4675                          * value from the retry is not delivered to core code.
4676                          */
4677                         union wpa_event_data event;
4678                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
4679                                    "failed");
4680                         os_memset(&event, 0, sizeof(event));
4681                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
4682                                   ETH_ALEN);
4683                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
4684                                              &event);
4685                 }
4686
4687                 goto nla_put_failure;
4688         }
4689         ret = 0;
4690         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
4691                    "successfully");
4692
4693 nla_put_failure:
4694         nlmsg_free(msg);
4695         return ret;
4696 }
4697
4698
4699 static int wpa_driver_nl80211_authenticate_retry(
4700         struct wpa_driver_nl80211_data *drv)
4701 {
4702         struct wpa_driver_auth_params params;
4703         struct i802_bss *bss = &drv->first_bss;
4704         int i;
4705
4706         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
4707
4708         os_memset(&params, 0, sizeof(params));
4709         params.freq = drv->auth_freq;
4710         params.auth_alg = drv->auth_alg;
4711         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
4712         params.local_state_change = drv->auth_local_state_change;
4713         params.p2p = drv->auth_p2p;
4714
4715         if (!is_zero_ether_addr(drv->auth_bssid_))
4716                 params.bssid = drv->auth_bssid_;
4717
4718         if (drv->auth_ssid_len) {
4719                 params.ssid = drv->auth_ssid;
4720                 params.ssid_len = drv->auth_ssid_len;
4721         }
4722
4723         params.ie = drv->auth_ie;
4724         params.ie_len = drv->auth_ie_len;
4725
4726         for (i = 0; i < 4; i++) {
4727                 if (drv->auth_wep_key_len[i]) {
4728                         params.wep_key[i] = drv->auth_wep_key[i];
4729                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
4730                 }
4731         }
4732
4733         drv->retry_auth = 1;
4734         return wpa_driver_nl80211_authenticate(bss, &params);
4735 }
4736
4737
4738 struct phy_info_arg {
4739         u16 *num_modes;
4740         struct hostapd_hw_modes *modes;
4741 };
4742
4743 static int phy_info_handler(struct nl_msg *msg, void *arg)
4744 {
4745         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4746         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4747         struct phy_info_arg *phy_info = arg;
4748
4749         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
4750
4751         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
4752         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4753                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
4754                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
4755                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
4756                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
4757                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
4758                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
4759         };
4760
4761         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
4762         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
4763                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
4764                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
4765         };
4766
4767         struct nlattr *nl_band;
4768         struct nlattr *nl_freq;
4769         struct nlattr *nl_rate;
4770         int rem_band, rem_freq, rem_rate;
4771         struct hostapd_hw_modes *mode;
4772         int idx, mode_is_set;
4773
4774         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4775                   genlmsg_attrlen(gnlh, 0), NULL);
4776
4777         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
4778                 return NL_SKIP;
4779
4780         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
4781                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
4782                 if (!mode)
4783                         return NL_SKIP;
4784                 phy_info->modes = mode;
4785
4786                 mode_is_set = 0;
4787
4788                 mode = &phy_info->modes[*(phy_info->num_modes)];
4789                 memset(mode, 0, sizeof(*mode));
4790                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
4791                 *(phy_info->num_modes) += 1;
4792
4793                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
4794                           nla_len(nl_band), NULL);
4795
4796                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
4797                         mode->ht_capab = nla_get_u16(
4798                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
4799                 }
4800
4801                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
4802                         mode->a_mpdu_params |= nla_get_u8(
4803                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
4804                                 0x03;
4805                 }
4806
4807                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
4808                         mode->a_mpdu_params |= nla_get_u8(
4809                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
4810                                 2;
4811                 }
4812
4813                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
4814                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
4815                         u8 *mcs;
4816                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
4817                         os_memcpy(mode->mcs_set, mcs, 16);
4818                 }
4819
4820                 if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) {
4821                         mode->vht_capab = nla_get_u32(
4822                                 tb_band[NL80211_BAND_ATTR_VHT_CAPA]);
4823                 }
4824
4825                 if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] &&
4826                     nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) {
4827                         u8 *mcs;
4828                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
4829                         os_memcpy(mode->vht_mcs_set, mcs, 8);
4830                 }
4831
4832                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4833                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4834                                   nla_len(nl_freq), freq_policy);
4835                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4836                                 continue;
4837                         mode->num_channels++;
4838                 }
4839
4840                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
4841                 if (!mode->channels)
4842                         return NL_SKIP;
4843
4844                 idx = 0;
4845
4846                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4847                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4848                                   nla_len(nl_freq), freq_policy);
4849                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4850                                 continue;
4851
4852                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
4853                         mode->channels[idx].flag = 0;
4854
4855                         if (!mode_is_set) {
4856                                 /* crude heuristic */
4857                                 if (mode->channels[idx].freq < 4000)
4858                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
4859                                 else
4860                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
4861                                 mode_is_set = 1;
4862                         }
4863
4864                         /* crude heuristic */
4865                         if (mode->channels[idx].freq < 4000)
4866                                 if (mode->channels[idx].freq == 2484)
4867                                         mode->channels[idx].chan = 14;
4868                                 else
4869                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
4870                         else
4871                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
4872
4873                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4874                                 mode->channels[idx].flag |=
4875                                         HOSTAPD_CHAN_DISABLED;
4876                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
4877                                 mode->channels[idx].flag |=
4878                                         HOSTAPD_CHAN_PASSIVE_SCAN;
4879                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
4880                                 mode->channels[idx].flag |=
4881                                         HOSTAPD_CHAN_NO_IBSS;
4882                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
4883                                 mode->channels[idx].flag |=
4884                                         HOSTAPD_CHAN_RADAR;
4885
4886                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
4887                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4888                                 mode->channels[idx].max_tx_power =
4889                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
4890
4891                         idx++;
4892                 }
4893
4894                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4895                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4896                                   nla_len(nl_rate), rate_policy);
4897                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4898                                 continue;
4899                         mode->num_rates++;
4900                 }
4901
4902                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
4903                 if (!mode->rates)
4904                         return NL_SKIP;
4905
4906                 idx = 0;
4907
4908                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4909                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4910                                   nla_len(nl_rate), rate_policy);
4911                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4912                                 continue;
4913                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
4914
4915                         /* crude heuristic */
4916                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
4917                             mode->rates[idx] > 200)
4918                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
4919
4920                         idx++;
4921                 }
4922         }
4923
4924         return NL_SKIP;
4925 }
4926
4927 static struct hostapd_hw_modes *
4928 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
4929 {
4930         u16 m;
4931         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
4932         int i, mode11g_idx = -1;
4933
4934         /* If only 802.11g mode is included, use it to construct matching
4935          * 802.11b mode data. */
4936
4937         for (m = 0; m < *num_modes; m++) {
4938                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
4939                         return modes; /* 802.11b already included */
4940                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
4941                         mode11g_idx = m;
4942         }
4943
4944         if (mode11g_idx < 0)
4945                 return modes; /* 2.4 GHz band not supported at all */
4946
4947         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
4948         if (nmodes == NULL)
4949                 return modes; /* Could not add 802.11b mode */
4950
4951         mode = &nmodes[*num_modes];
4952         os_memset(mode, 0, sizeof(*mode));
4953         (*num_modes)++;
4954         modes = nmodes;
4955
4956         mode->mode = HOSTAPD_MODE_IEEE80211B;
4957
4958         mode11g = &modes[mode11g_idx];
4959         mode->num_channels = mode11g->num_channels;
4960         mode->channels = os_malloc(mode11g->num_channels *
4961                                    sizeof(struct hostapd_channel_data));
4962         if (mode->channels == NULL) {
4963                 (*num_modes)--;
4964                 return modes; /* Could not add 802.11b mode */
4965         }
4966         os_memcpy(mode->channels, mode11g->channels,
4967                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
4968
4969         mode->num_rates = 0;
4970         mode->rates = os_malloc(4 * sizeof(int));
4971         if (mode->rates == NULL) {
4972                 os_free(mode->channels);
4973                 (*num_modes)--;
4974                 return modes; /* Could not add 802.11b mode */
4975         }
4976
4977         for (i = 0; i < mode11g->num_rates; i++) {
4978                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
4979                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
4980                         continue;
4981                 mode->rates[mode->num_rates] = mode11g->rates[i];
4982                 mode->num_rates++;
4983                 if (mode->num_rates == 4)
4984                         break;
4985         }
4986
4987         if (mode->num_rates == 0) {
4988                 os_free(mode->channels);
4989                 os_free(mode->rates);
4990                 (*num_modes)--;
4991                 return modes; /* No 802.11b rates */
4992         }
4993
4994         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
4995                    "information");
4996
4997         return modes;
4998 }
4999
5000
5001 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
5002                                   int end)
5003 {
5004         int c;
5005
5006         for (c = 0; c < mode->num_channels; c++) {
5007                 struct hostapd_channel_data *chan = &mode->channels[c];
5008                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
5009                         chan->flag |= HOSTAPD_CHAN_HT40;
5010         }
5011 }
5012
5013
5014 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
5015                                       int end)
5016 {
5017         int c;
5018
5019         for (c = 0; c < mode->num_channels; c++) {
5020                 struct hostapd_channel_data *chan = &mode->channels[c];
5021                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
5022                         continue;
5023                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
5024                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
5025                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
5026                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
5027         }
5028 }
5029
5030
5031 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
5032                                   struct phy_info_arg *results)
5033 {
5034         u32 start, end, max_bw;
5035         u16 m;
5036
5037         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5038             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5039             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5040                 return;
5041
5042         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5043         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5044         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5045
5046         wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
5047                    start, end, max_bw);
5048         if (max_bw < 40)
5049                 return;
5050
5051         for (m = 0; m < *results->num_modes; m++) {
5052                 if (!(results->modes[m].ht_capab &
5053                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5054                         continue;
5055                 nl80211_set_ht40_mode(&results->modes[m], start, end);
5056         }
5057 }
5058
5059
5060 static void nl80211_reg_rule_sec(struct nlattr *tb[],
5061                                  struct phy_info_arg *results)
5062 {
5063         u32 start, end, max_bw;
5064         u16 m;
5065
5066         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5067             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5068             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5069                 return;
5070
5071         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5072         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5073         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5074
5075         if (max_bw < 20)
5076                 return;
5077
5078         for (m = 0; m < *results->num_modes; m++) {
5079                 if (!(results->modes[m].ht_capab &
5080                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5081                         continue;
5082                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
5083         }
5084 }
5085
5086
5087 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
5088 {
5089         struct phy_info_arg *results = arg;
5090         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
5091         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5092         struct nlattr *nl_rule;
5093         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
5094         int rem_rule;
5095         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
5096                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5097                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5098                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5099                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5100                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5101                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5102         };
5103
5104         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5105                   genlmsg_attrlen(gnlh, 0), NULL);
5106         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
5107             !tb_msg[NL80211_ATTR_REG_RULES]) {
5108                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
5109                            "available");
5110                 return NL_SKIP;
5111         }
5112
5113         wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
5114                    (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
5115
5116         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5117         {
5118                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5119                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5120                 nl80211_reg_rule_ht40(tb_rule, results);
5121         }
5122
5123         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5124         {
5125                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5126                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5127                 nl80211_reg_rule_sec(tb_rule, results);
5128         }
5129
5130         return NL_SKIP;
5131 }
5132
5133
5134 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
5135                                   struct phy_info_arg *results)
5136 {
5137         struct nl_msg *msg;
5138
5139         msg = nlmsg_alloc();
5140         if (!msg)
5141                 return -ENOMEM;
5142
5143         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
5144         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
5145 }
5146
5147
5148 static struct hostapd_hw_modes *
5149 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
5150 {
5151         struct i802_bss *bss = priv;
5152         struct wpa_driver_nl80211_data *drv = bss->drv;
5153         struct nl_msg *msg;
5154         struct phy_info_arg result = {
5155                 .num_modes = num_modes,
5156                 .modes = NULL,
5157         };
5158
5159         *num_modes = 0;
5160         *flags = 0;
5161
5162         msg = nlmsg_alloc();
5163         if (!msg)
5164                 return NULL;
5165
5166         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
5167
5168         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5169
5170         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
5171                 nl80211_set_ht40_flags(drv, &result);
5172                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
5173         }
5174         msg = NULL;
5175  nla_put_failure:
5176         nlmsg_free(msg);
5177         return NULL;
5178 }
5179
5180
5181 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
5182                                         const void *data, size_t len,
5183                                         int encrypt, int noack)
5184 {
5185         __u8 rtap_hdr[] = {
5186                 0x00, 0x00, /* radiotap version */
5187                 0x0e, 0x00, /* radiotap length */
5188                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
5189                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
5190                 0x00,       /* padding */
5191                 0x00, 0x00, /* RX and TX flags to indicate that */
5192                 0x00, 0x00, /* this is the injected frame directly */
5193         };
5194         struct iovec iov[2] = {
5195                 {
5196                         .iov_base = &rtap_hdr,
5197                         .iov_len = sizeof(rtap_hdr),
5198                 },
5199                 {
5200                         .iov_base = (void *) data,
5201                         .iov_len = len,
5202                 }
5203         };
5204         struct msghdr msg = {
5205                 .msg_name = NULL,
5206                 .msg_namelen = 0,
5207                 .msg_iov = iov,
5208                 .msg_iovlen = 2,
5209                 .msg_control = NULL,
5210                 .msg_controllen = 0,
5211                 .msg_flags = 0,
5212         };
5213         int res;
5214         u16 txflags = 0;
5215
5216         if (encrypt)
5217                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
5218
5219         if (drv->monitor_sock < 0) {
5220                 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
5221                            "for %s", __func__);
5222                 return -1;
5223         }
5224
5225         if (noack)
5226                 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
5227         *(le16 *) &rtap_hdr[12] = host_to_le16(txflags);
5228
5229         res = sendmsg(drv->monitor_sock, &msg, 0);
5230         if (res < 0) {
5231                 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
5232                 return -1;
5233         }
5234         return 0;
5235 }
5236
5237
5238 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
5239                                          const void *data, size_t len,
5240                                          int encrypt, int noack,
5241                                          unsigned int freq, int no_cck,
5242                                          int offchanok, unsigned int wait_time)
5243 {
5244         struct wpa_driver_nl80211_data *drv = bss->drv;
5245         u64 cookie;
5246
5247         if (freq == 0)
5248                 freq = bss->freq;
5249
5250         if (drv->use_monitor)
5251                 return wpa_driver_nl80211_send_mntr(drv, data, len,
5252                                                     encrypt, noack);
5253
5254         return nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
5255                                       &cookie, no_cck, noack, offchanok);
5256 }
5257
5258
5259 static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss,
5260                                              const u8 *data,
5261                                              size_t data_len, int noack,
5262                                              unsigned int freq, int no_cck,
5263                                              int offchanok,
5264                                              unsigned int wait_time)
5265 {
5266         struct wpa_driver_nl80211_data *drv = bss->drv;
5267         struct ieee80211_mgmt *mgmt;
5268         int encrypt = 1;
5269         u16 fc;
5270
5271         mgmt = (struct ieee80211_mgmt *) data;
5272         fc = le_to_host16(mgmt->frame_control);
5273
5274         if (is_sta_interface(drv->nlmode) &&
5275             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5276             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
5277                 /*
5278                  * The use of last_mgmt_freq is a bit of a hack,
5279                  * but it works due to the single-threaded nature
5280                  * of wpa_supplicant.
5281                  */
5282                 if (freq == 0)
5283                         freq = drv->last_mgmt_freq;
5284                 return nl80211_send_frame_cmd(bss, freq, 0,
5285                                               data, data_len, NULL, 1, noack,
5286                                               1);
5287         }
5288
5289         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
5290                 if (freq == 0)
5291                         freq = bss->freq;
5292                 return nl80211_send_frame_cmd(bss, freq,
5293                                               (int) freq == bss->freq ? 0 :
5294                                               wait_time,
5295                                               data, data_len,
5296                                               &drv->send_action_cookie,
5297                                               no_cck, noack, offchanok);
5298         }
5299
5300         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5301             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
5302                 /*
5303                  * Only one of the authentication frame types is encrypted.
5304                  * In order for static WEP encryption to work properly (i.e.,
5305                  * to not encrypt the frame), we need to tell mac80211 about
5306                  * the frames that must not be encrypted.
5307                  */
5308                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
5309                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
5310                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
5311                         encrypt = 0;
5312         }
5313
5314         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
5315                                              noack, freq, no_cck, offchanok,
5316                                              wait_time);
5317 }
5318
5319
5320 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
5321                                         size_t data_len, int noack)
5322 {
5323         struct i802_bss *bss = priv;
5324         return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack,
5325                                                  0, 0, 0, 0);
5326 }
5327
5328
5329 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
5330                            int slot, int ht_opmode, int ap_isolate,
5331                            int *basic_rates)
5332 {
5333         struct wpa_driver_nl80211_data *drv = bss->drv;
5334         struct nl_msg *msg;
5335
5336         msg = nlmsg_alloc();
5337         if (!msg)
5338                 return -ENOMEM;
5339
5340         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5341
5342         if (cts >= 0)
5343                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
5344         if (preamble >= 0)
5345                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
5346         if (slot >= 0)
5347                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
5348         if (ht_opmode >= 0)
5349                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
5350         if (ap_isolate >= 0)
5351                 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
5352
5353         if (basic_rates) {
5354                 u8 rates[NL80211_MAX_SUPP_RATES];
5355                 u8 rates_len = 0;
5356                 int i;
5357
5358                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
5359                      i++)
5360                         rates[rates_len++] = basic_rates[i] / 5;
5361
5362                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5363         }
5364
5365         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5366
5367         return send_and_recv_msgs(drv, msg, NULL, NULL);
5368  nla_put_failure:
5369         nlmsg_free(msg);
5370         return -ENOBUFS;
5371 }
5372
5373
5374 static int wpa_driver_nl80211_set_ap(void *priv,
5375                                      struct wpa_driver_ap_params *params)
5376 {
5377         struct i802_bss *bss = priv;
5378         struct wpa_driver_nl80211_data *drv = bss->drv;
5379         struct nl_msg *msg;
5380         u8 cmd = NL80211_CMD_NEW_BEACON;
5381         int ret;
5382         int beacon_set;
5383         int ifindex = if_nametoindex(bss->ifname);
5384         int num_suites;
5385         u32 suites[10];
5386         u32 ver;
5387
5388         beacon_set = bss->beacon_set;
5389
5390         msg = nlmsg_alloc();
5391         if (!msg)
5392                 return -ENOMEM;
5393
5394         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
5395                    beacon_set);
5396         if (beacon_set)
5397                 cmd = NL80211_CMD_SET_BEACON;
5398
5399         nl80211_cmd(drv, msg, 0, cmd);
5400         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
5401         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
5402         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5403         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
5404         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
5405         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5406                 params->ssid);
5407         if (params->proberesp && params->proberesp_len)
5408                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
5409                         params->proberesp);
5410         switch (params->hide_ssid) {
5411         case NO_SSID_HIDING:
5412                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5413                             NL80211_HIDDEN_SSID_NOT_IN_USE);
5414                 break;
5415         case HIDDEN_SSID_ZERO_LEN:
5416                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5417                             NL80211_HIDDEN_SSID_ZERO_LEN);
5418                 break;
5419         case HIDDEN_SSID_ZERO_CONTENTS:
5420                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5421                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
5422                 break;
5423         }
5424         if (params->privacy)
5425                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
5426         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
5427             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
5428                 /* Leave out the attribute */
5429         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
5430                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5431                             NL80211_AUTHTYPE_SHARED_KEY);
5432         else
5433                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5434                             NL80211_AUTHTYPE_OPEN_SYSTEM);
5435
5436         ver = 0;
5437         if (params->wpa_version & WPA_PROTO_WPA)
5438                 ver |= NL80211_WPA_VERSION_1;
5439         if (params->wpa_version & WPA_PROTO_RSN)
5440                 ver |= NL80211_WPA_VERSION_2;
5441         if (ver)
5442                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5443
5444         num_suites = 0;
5445         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
5446                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
5447         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
5448                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
5449         if (num_suites) {
5450                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
5451                         num_suites * sizeof(u32), suites);
5452         }
5453
5454         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
5455             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
5456                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
5457
5458         num_suites = 0;
5459         if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
5460                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
5461         if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
5462                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
5463         if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
5464                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
5465         if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
5466                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
5467         if (num_suites) {
5468                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
5469                         num_suites * sizeof(u32), suites);
5470         }
5471
5472         switch (params->group_cipher) {
5473         case WPA_CIPHER_CCMP:
5474                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5475                             WLAN_CIPHER_SUITE_CCMP);
5476                 break;
5477         case WPA_CIPHER_TKIP:
5478                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5479                             WLAN_CIPHER_SUITE_TKIP);
5480                 break;
5481         case WPA_CIPHER_WEP104:
5482                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5483                             WLAN_CIPHER_SUITE_WEP104);
5484                 break;
5485         case WPA_CIPHER_WEP40:
5486                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5487                             WLAN_CIPHER_SUITE_WEP40);
5488                 break;
5489         }
5490
5491         if (params->beacon_ies) {
5492                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
5493                         wpabuf_head(params->beacon_ies));
5494         }
5495         if (params->proberesp_ies) {
5496                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
5497                         wpabuf_len(params->proberesp_ies),
5498                         wpabuf_head(params->proberesp_ies));
5499         }
5500         if (params->assocresp_ies) {
5501                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
5502                         wpabuf_len(params->assocresp_ies),
5503                         wpabuf_head(params->assocresp_ies));
5504         }
5505
5506         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
5507                 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
5508                             params->ap_max_inactivity);
5509         }
5510
5511         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5512         if (ret) {
5513                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
5514                            ret, strerror(-ret));
5515         } else {
5516                 bss->beacon_set = 1;
5517                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
5518                                 params->short_slot_time, params->ht_opmode,
5519                                 params->isolate, params->basic_rates);
5520         }
5521         return ret;
5522  nla_put_failure:
5523         nlmsg_free(msg);
5524         return -ENOBUFS;
5525 }
5526
5527
5528 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
5529                                        int freq, int ht_enabled,
5530                                        int sec_channel_offset)
5531 {
5532         struct wpa_driver_nl80211_data *drv = bss->drv;
5533         struct nl_msg *msg;
5534         int ret;
5535
5536         wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
5537                    "sec_channel_offset=%d)",
5538                    freq, ht_enabled, sec_channel_offset);
5539         msg = nlmsg_alloc();
5540         if (!msg)
5541                 return -1;
5542
5543         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5544
5545         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5546         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5547         if (ht_enabled) {
5548                 switch (sec_channel_offset) {
5549                 case -1:
5550                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5551                                     NL80211_CHAN_HT40MINUS);
5552                         break;
5553                 case 1:
5554                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5555                                     NL80211_CHAN_HT40PLUS);
5556                         break;
5557                 default:
5558                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5559                                     NL80211_CHAN_HT20);
5560                         break;
5561                 }
5562         }
5563
5564         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5565         msg = NULL;
5566         if (ret == 0) {
5567                 bss->freq = freq;
5568                 return 0;
5569         }
5570         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
5571                    "%d (%s)", freq, ret, strerror(-ret));
5572 nla_put_failure:
5573         nlmsg_free(msg);
5574         return -1;
5575 }
5576
5577
5578 static u32 sta_flags_nl80211(int flags)
5579 {
5580         u32 f = 0;
5581
5582         if (flags & WPA_STA_AUTHORIZED)
5583                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
5584         if (flags & WPA_STA_WMM)
5585                 f |= BIT(NL80211_STA_FLAG_WME);
5586         if (flags & WPA_STA_SHORT_PREAMBLE)
5587                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
5588         if (flags & WPA_STA_MFP)
5589                 f |= BIT(NL80211_STA_FLAG_MFP);
5590         if (flags & WPA_STA_TDLS_PEER)
5591                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
5592
5593         return f;
5594 }
5595
5596
5597 static int wpa_driver_nl80211_sta_add(void *priv,
5598                                       struct hostapd_sta_add_params *params)
5599 {
5600         struct i802_bss *bss = priv;
5601         struct wpa_driver_nl80211_data *drv = bss->drv;
5602         struct nl_msg *msg, *wme = NULL;
5603         struct nl80211_sta_flag_update upd;
5604         int ret = -ENOBUFS;
5605
5606         if ((params->flags & WPA_STA_TDLS_PEER) &&
5607             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
5608                 return -EOPNOTSUPP;
5609
5610         msg = nlmsg_alloc();
5611         if (!msg)
5612                 return -ENOMEM;
5613
5614         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
5615                     NL80211_CMD_NEW_STATION);
5616
5617         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5618         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
5619         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
5620                 params->supp_rates);
5621         if (!params->set) {
5622                 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
5623                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
5624                             params->listen_interval);
5625         }
5626         if (params->ht_capabilities) {
5627                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
5628                         sizeof(*params->ht_capabilities),
5629                         params->ht_capabilities);
5630         }
5631
5632         os_memset(&upd, 0, sizeof(upd));
5633         upd.mask = sta_flags_nl80211(params->flags);
5634         upd.set = upd.mask;
5635         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5636
5637         if (params->flags & WPA_STA_WMM) {
5638                 wme = nlmsg_alloc();
5639                 if (!wme)
5640                         goto nla_put_failure;
5641
5642                 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES,
5643                                 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
5644                 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP,
5645                                 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) &
5646                                 WMM_QOSINFO_STA_SP_MASK);
5647                 if (nla_put_nested(msg, NL80211_ATTR_STA_WME, wme) < 0)
5648                         goto nla_put_failure;
5649         }
5650
5651         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5652         msg = NULL;
5653         if (ret)
5654                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
5655                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
5656                            strerror(-ret));
5657         if (ret == -EEXIST)
5658                 ret = 0;
5659  nla_put_failure:
5660         nlmsg_free(wme);
5661         nlmsg_free(msg);
5662         return ret;
5663 }
5664
5665
5666 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
5667 {
5668         struct i802_bss *bss = priv;
5669         struct wpa_driver_nl80211_data *drv = bss->drv;
5670         struct nl_msg *msg;
5671         int ret;
5672
5673         msg = nlmsg_alloc();
5674         if (!msg)
5675                 return -ENOMEM;
5676
5677         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5678
5679         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5680                     if_nametoindex(bss->ifname));
5681         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5682
5683         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5684         if (ret == -ENOENT)
5685                 return 0;
5686         return ret;
5687  nla_put_failure:
5688         nlmsg_free(msg);
5689         return -ENOBUFS;
5690 }
5691
5692
5693 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
5694                                  int ifidx)
5695 {
5696         struct nl_msg *msg;
5697
5698         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
5699
5700         /* stop listening for EAPOL on this interface */
5701         del_ifidx(drv, ifidx);
5702
5703         msg = nlmsg_alloc();
5704         if (!msg)
5705                 goto nla_put_failure;
5706
5707         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
5708         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
5709
5710         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5711                 return;
5712         msg = NULL;
5713  nla_put_failure:
5714         nlmsg_free(msg);
5715         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
5716 }
5717
5718
5719 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
5720 {
5721         switch (mode) {
5722         case NL80211_IFTYPE_ADHOC:
5723                 return "ADHOC";
5724         case NL80211_IFTYPE_STATION:
5725                 return "STATION";
5726         case NL80211_IFTYPE_AP:
5727                 return "AP";
5728         case NL80211_IFTYPE_MONITOR:
5729                 return "MONITOR";
5730         case NL80211_IFTYPE_P2P_CLIENT:
5731                 return "P2P_CLIENT";
5732         case NL80211_IFTYPE_P2P_GO:
5733                 return "P2P_GO";
5734         default:
5735                 return "unknown";
5736         }
5737 }
5738
5739
5740 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
5741                                      const char *ifname,
5742                                      enum nl80211_iftype iftype,
5743                                      const u8 *addr, int wds)
5744 {
5745         struct nl_msg *msg, *flags = NULL;
5746         int ifidx;
5747         int ret = -ENOBUFS;
5748
5749         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
5750                    iftype, nl80211_iftype_str(iftype));
5751
5752         msg = nlmsg_alloc();
5753         if (!msg)
5754                 return -1;
5755
5756         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
5757         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5758         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
5759         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
5760
5761         if (iftype == NL80211_IFTYPE_MONITOR) {
5762                 int err;
5763
5764                 flags = nlmsg_alloc();
5765                 if (!flags)
5766                         goto nla_put_failure;
5767
5768                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
5769
5770                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
5771
5772                 nlmsg_free(flags);
5773
5774                 if (err)
5775                         goto nla_put_failure;
5776         } else if (wds) {
5777                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
5778         }
5779
5780         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5781         msg = NULL;
5782         if (ret) {
5783  nla_put_failure:
5784                 nlmsg_free(msg);
5785                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
5786                            ifname, ret, strerror(-ret));
5787                 return ret;
5788         }
5789
5790         ifidx = if_nametoindex(ifname);
5791         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
5792                    ifname, ifidx);
5793
5794         if (ifidx <= 0)
5795                 return -1;
5796
5797         /* start listening for EAPOL on this interface */
5798         add_ifidx(drv, ifidx);
5799
5800         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
5801             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
5802                 nl80211_remove_iface(drv, ifidx);
5803                 return -1;
5804         }
5805
5806         return ifidx;
5807 }
5808
5809
5810 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
5811                                 const char *ifname, enum nl80211_iftype iftype,
5812                                 const u8 *addr, int wds)
5813 {
5814         int ret;
5815
5816         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
5817
5818         /* if error occurred and interface exists already */
5819         if (ret == -ENFILE && if_nametoindex(ifname)) {
5820                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
5821
5822                 /* Try to remove the interface that was already there. */
5823                 nl80211_remove_iface(drv, if_nametoindex(ifname));
5824
5825                 /* Try to create the interface again */
5826                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
5827                                                 wds);
5828         }
5829
5830         if (ret >= 0 && is_p2p_interface(iftype))
5831                 nl80211_disable_11b_rates(drv, ret, 1);
5832
5833         return ret;
5834 }
5835
5836
5837 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
5838 {
5839         struct ieee80211_hdr *hdr;
5840         u16 fc;
5841         union wpa_event_data event;
5842
5843         hdr = (struct ieee80211_hdr *) buf;
5844         fc = le_to_host16(hdr->frame_control);
5845
5846         os_memset(&event, 0, sizeof(event));
5847         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
5848         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
5849         event.tx_status.dst = hdr->addr1;
5850         event.tx_status.data = buf;
5851         event.tx_status.data_len = len;
5852         event.tx_status.ack = ok;
5853         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
5854 }
5855
5856
5857 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
5858                              u8 *buf, size_t len)
5859 {
5860         struct ieee80211_hdr *hdr = (void *)buf;
5861         u16 fc;
5862         union wpa_event_data event;
5863
5864         if (len < sizeof(*hdr))
5865                 return;
5866
5867         fc = le_to_host16(hdr->frame_control);
5868
5869         os_memset(&event, 0, sizeof(event));
5870         event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
5871         event.rx_from_unknown.addr = hdr->addr2;
5872         event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
5873                 (WLAN_FC_FROMDS | WLAN_FC_TODS);
5874         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
5875 }
5876
5877
5878 static void handle_frame(struct wpa_driver_nl80211_data *drv,
5879                          u8 *buf, size_t len, int datarate, int ssi_signal)
5880 {
5881         struct ieee80211_hdr *hdr;
5882         u16 fc;
5883         union wpa_event_data event;
5884
5885         hdr = (struct ieee80211_hdr *) buf;
5886         fc = le_to_host16(hdr->frame_control);
5887
5888         switch (WLAN_FC_GET_TYPE(fc)) {
5889         case WLAN_FC_TYPE_MGMT:
5890                 os_memset(&event, 0, sizeof(event));
5891                 event.rx_mgmt.frame = buf;
5892                 event.rx_mgmt.frame_len = len;
5893                 event.rx_mgmt.datarate = datarate;
5894                 event.rx_mgmt.ssi_signal = ssi_signal;
5895                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
5896                 break;
5897         case WLAN_FC_TYPE_CTRL:
5898                 /* can only get here with PS-Poll frames */
5899                 wpa_printf(MSG_DEBUG, "CTRL");
5900                 from_unknown_sta(drv, buf, len);
5901                 break;
5902         case WLAN_FC_TYPE_DATA:
5903                 from_unknown_sta(drv, buf, len);
5904                 break;
5905         }
5906 }
5907
5908
5909 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
5910 {
5911         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5912         int len;
5913         unsigned char buf[3000];
5914         struct ieee80211_radiotap_iterator iter;
5915         int ret;
5916         int datarate = 0, ssi_signal = 0;
5917         int injected = 0, failed = 0, rxflags = 0;
5918
5919         len = recv(sock, buf, sizeof(buf), 0);
5920         if (len < 0) {
5921                 perror("recv");
5922                 return;
5923         }
5924
5925         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
5926                 printf("received invalid radiotap frame\n");
5927                 return;
5928         }
5929
5930         while (1) {
5931                 ret = ieee80211_radiotap_iterator_next(&iter);
5932                 if (ret == -ENOENT)
5933                         break;
5934                 if (ret) {
5935                         printf("received invalid radiotap frame (%d)\n", ret);
5936                         return;
5937                 }
5938                 switch (iter.this_arg_index) {
5939                 case IEEE80211_RADIOTAP_FLAGS:
5940                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
5941                                 len -= 4;
5942                         break;
5943                 case IEEE80211_RADIOTAP_RX_FLAGS:
5944                         rxflags = 1;
5945                         break;
5946                 case IEEE80211_RADIOTAP_TX_FLAGS:
5947                         injected = 1;
5948                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
5949                                         IEEE80211_RADIOTAP_F_TX_FAIL;
5950                         break;
5951                 case IEEE80211_RADIOTAP_DATA_RETRIES:
5952                         break;
5953                 case IEEE80211_RADIOTAP_CHANNEL:
5954                         /* TODO: convert from freq/flags to channel number */
5955                         break;
5956                 case IEEE80211_RADIOTAP_RATE:
5957                         datarate = *iter.this_arg * 5;
5958                         break;
5959                 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
5960                         ssi_signal = (s8) *iter.this_arg;
5961                         break;
5962                 }
5963         }
5964
5965         if (rxflags && injected)
5966                 return;
5967
5968         if (!injected)
5969                 handle_frame(drv, buf + iter.max_length,
5970                              len - iter.max_length, datarate, ssi_signal);
5971         else
5972                 handle_tx_callback(drv->ctx, buf + iter.max_length,
5973                                    len - iter.max_length, !failed);
5974 }
5975
5976
5977 /*
5978  * we post-process the filter code later and rewrite
5979  * this to the offset to the last instruction
5980  */
5981 #define PASS    0xFF
5982 #define FAIL    0xFE
5983
5984 static struct sock_filter msock_filter_insns[] = {
5985         /*
5986          * do a little-endian load of the radiotap length field
5987          */
5988         /* load lower byte into A */
5989         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
5990         /* put it into X (== index register) */
5991         BPF_STMT(BPF_MISC| BPF_TAX, 0),
5992         /* load upper byte into A */
5993         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
5994         /* left-shift it by 8 */
5995         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
5996         /* or with X */
5997         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
5998         /* put result into X */
5999         BPF_STMT(BPF_MISC| BPF_TAX, 0),
6000
6001         /*
6002          * Allow management frames through, this also gives us those
6003          * management frames that we sent ourselves with status
6004          */
6005         /* load the lower byte of the IEEE 802.11 frame control field */
6006         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
6007         /* mask off frame type and version */
6008         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
6009         /* accept frame if it's both 0, fall through otherwise */
6010         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
6011
6012         /*
6013          * TODO: add a bit to radiotap RX flags that indicates
6014          * that the sending station is not associated, then
6015          * add a filter here that filters on our DA and that flag
6016          * to allow us to deauth frames to that bad station.
6017          *
6018          * For now allow all To DS data frames through.
6019          */
6020         /* load the IEEE 802.11 frame control field */
6021         BPF_STMT(BPF_LD  | BPF_H | BPF_IND, 0),
6022         /* mask off frame type, version and DS status */
6023         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
6024         /* accept frame if version 0, type 2 and To DS, fall through otherwise
6025          */
6026         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
6027
6028 #if 0
6029         /*
6030          * drop non-data frames
6031          */
6032         /* load the lower byte of the frame control field */
6033         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
6034         /* mask off QoS bit */
6035         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
6036         /* drop non-data frames */
6037         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
6038 #endif
6039         /* load the upper byte of the frame control field */
6040         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
6041         /* mask off toDS/fromDS */
6042         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
6043         /* accept WDS frames */
6044         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
6045
6046         /*
6047          * add header length to index
6048          */
6049         /* load the lower byte of the frame control field */
6050         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
6051         /* mask off QoS bit */
6052         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
6053         /* right shift it by 6 to give 0 or 2 */
6054         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
6055         /* add data frame header length */
6056         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
6057         /* add index, was start of 802.11 header */
6058         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
6059         /* move to index, now start of LL header */
6060         BPF_STMT(BPF_MISC | BPF_TAX, 0),
6061
6062         /*
6063          * Accept empty data frames, we use those for
6064          * polling activity.
6065          */
6066         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
6067         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
6068
6069         /*
6070          * Accept EAPOL frames
6071          */
6072         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
6073         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
6074         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
6075         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
6076
6077         /* keep these last two statements or change the code below */
6078         /* return 0 == "DROP" */
6079         BPF_STMT(BPF_RET | BPF_K, 0),
6080         /* return ~0 == "keep all" */
6081         BPF_STMT(BPF_RET | BPF_K, ~0),
6082 };
6083
6084 static struct sock_fprog msock_filter = {
6085         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
6086         .filter = msock_filter_insns,
6087 };
6088
6089
6090 static int add_monitor_filter(int s)
6091 {
6092         int idx;
6093
6094         /* rewrite all PASS/FAIL jump offsets */
6095         for (idx = 0; idx < msock_filter.len; idx++) {
6096                 struct sock_filter *insn = &msock_filter_insns[idx];
6097
6098                 if (BPF_CLASS(insn->code) == BPF_JMP) {
6099                         if (insn->code == (BPF_JMP|BPF_JA)) {
6100                                 if (insn->k == PASS)
6101                                         insn->k = msock_filter.len - idx - 2;
6102                                 else if (insn->k == FAIL)
6103                                         insn->k = msock_filter.len - idx - 3;
6104                         }
6105
6106                         if (insn->jt == PASS)
6107                                 insn->jt = msock_filter.len - idx - 2;
6108                         else if (insn->jt == FAIL)
6109                                 insn->jt = msock_filter.len - idx - 3;
6110
6111                         if (insn->jf == PASS)
6112                                 insn->jf = msock_filter.len - idx - 2;
6113                         else if (insn->jf == FAIL)
6114                                 insn->jf = msock_filter.len - idx - 3;
6115                 }
6116         }
6117
6118         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
6119                        &msock_filter, sizeof(msock_filter))) {
6120                 perror("SO_ATTACH_FILTER");
6121                 return -1;
6122         }
6123
6124         return 0;
6125 }
6126
6127
6128 static void nl80211_remove_monitor_interface(
6129         struct wpa_driver_nl80211_data *drv)
6130 {
6131         drv->monitor_refcount--;
6132         if (drv->monitor_refcount > 0)
6133                 return;
6134
6135         if (drv->monitor_ifidx >= 0) {
6136                 nl80211_remove_iface(drv, drv->monitor_ifidx);
6137                 drv->monitor_ifidx = -1;
6138         }
6139         if (drv->monitor_sock >= 0) {
6140                 eloop_unregister_read_sock(drv->monitor_sock);
6141                 close(drv->monitor_sock);
6142                 drv->monitor_sock = -1;
6143         }
6144 }
6145
6146
6147 static int
6148 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
6149 {
6150         char buf[IFNAMSIZ];
6151         struct sockaddr_ll ll;
6152         int optval;
6153         socklen_t optlen;
6154
6155         if (drv->monitor_ifidx >= 0) {
6156                 drv->monitor_refcount++;
6157                 return 0;
6158         }
6159
6160         if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
6161                 /*
6162                  * P2P interface name is of the format p2p-%s-%d. For monitor
6163                  * interface name corresponding to P2P GO, replace "p2p-" with
6164                  * "mon-" to retain the same interface name length and to
6165                  * indicate that it is a monitor interface.
6166                  */
6167                 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
6168         } else {
6169                 /* Non-P2P interface with AP functionality. */
6170                 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
6171         }
6172
6173         buf[IFNAMSIZ - 1] = '\0';
6174
6175         drv->monitor_ifidx =
6176                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
6177                                      0);
6178
6179         if (drv->monitor_ifidx == -EOPNOTSUPP) {
6180                 /*
6181                  * This is backward compatibility for a few versions of
6182                  * the kernel only that didn't advertise the right
6183                  * attributes for the only driver that then supported
6184                  * AP mode w/o monitor -- ath6kl.
6185                  */
6186                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
6187                            "monitor interface type - try to run without it");
6188                 drv->device_ap_sme = 1;
6189         }
6190
6191         if (drv->monitor_ifidx < 0)
6192                 return -1;
6193
6194         if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
6195                 goto error;
6196
6197         memset(&ll, 0, sizeof(ll));
6198         ll.sll_family = AF_PACKET;
6199         ll.sll_ifindex = drv->monitor_ifidx;
6200         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
6201         if (drv->monitor_sock < 0) {
6202                 perror("socket[PF_PACKET,SOCK_RAW]");
6203                 goto error;
6204         }
6205
6206         if (add_monitor_filter(drv->monitor_sock)) {
6207                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
6208                            "interface; do filtering in user space");
6209                 /* This works, but will cost in performance. */
6210         }
6211
6212         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
6213                 perror("monitor socket bind");
6214                 goto error;
6215         }
6216
6217         optlen = sizeof(optval);
6218         optval = 20;
6219         if (setsockopt
6220             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
6221                 perror("Failed to set socket priority");
6222                 goto error;
6223         }
6224
6225         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
6226                                      drv, NULL)) {
6227                 printf("Could not register monitor read socket\n");
6228                 goto error;
6229         }
6230
6231         return 0;
6232  error:
6233         nl80211_remove_monitor_interface(drv);
6234         return -1;
6235 }
6236
6237
6238 static int nl80211_setup_ap(struct i802_bss *bss)
6239 {
6240         struct wpa_driver_nl80211_data *drv = bss->drv;
6241
6242         wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d "
6243                    "use_monitor=%d", drv->device_ap_sme, drv->use_monitor);
6244
6245         /*
6246          * Disable Probe Request reporting unless we need it in this way for
6247          * devices that include the AP SME, in the other case (unless using
6248          * monitor iface) we'll get it through the nl_mgmt socket instead.
6249          */
6250         if (!drv->device_ap_sme)
6251                 wpa_driver_nl80211_probe_req_report(bss, 0);
6252
6253         if (!drv->device_ap_sme && !drv->use_monitor)
6254                 if (nl80211_mgmt_subscribe_ap(bss))
6255                         return -1;
6256
6257         if (drv->device_ap_sme && !drv->use_monitor)
6258                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
6259                         return -1;
6260
6261         if (!drv->device_ap_sme && drv->use_monitor &&
6262             nl80211_create_monitor_interface(drv) &&
6263             !drv->device_ap_sme)
6264                 return -1;
6265
6266         if (drv->device_ap_sme &&
6267             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
6268                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
6269                            "Probe Request frame reporting in AP mode");
6270                 /* Try to survive without this */
6271         }
6272
6273         return 0;
6274 }
6275
6276
6277 static void nl80211_teardown_ap(struct i802_bss *bss)
6278 {
6279         struct wpa_driver_nl80211_data *drv = bss->drv;
6280
6281         if (drv->device_ap_sme) {
6282                 wpa_driver_nl80211_probe_req_report(bss, 0);
6283                 if (!drv->use_monitor)
6284                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
6285         } else if (drv->use_monitor)
6286                 nl80211_remove_monitor_interface(drv);
6287         else
6288                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
6289
6290         bss->beacon_set = 0;
6291 }
6292
6293
6294 static int nl80211_send_eapol_data(struct i802_bss *bss,
6295                                    const u8 *addr, const u8 *data,
6296                                    size_t data_len)
6297 {
6298         struct sockaddr_ll ll;
6299         int ret;
6300
6301         if (bss->drv->eapol_tx_sock < 0) {
6302                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
6303                 return -1;
6304         }
6305
6306         os_memset(&ll, 0, sizeof(ll));
6307         ll.sll_family = AF_PACKET;
6308         ll.sll_ifindex = bss->ifindex;
6309         ll.sll_protocol = htons(ETH_P_PAE);
6310         ll.sll_halen = ETH_ALEN;
6311         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
6312         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
6313                      (struct sockaddr *) &ll, sizeof(ll));
6314         if (ret < 0)
6315                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
6316                            strerror(errno));
6317
6318         return ret;
6319 }
6320
6321
6322 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
6323
6324 static int wpa_driver_nl80211_hapd_send_eapol(
6325         void *priv, const u8 *addr, const u8 *data,
6326         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
6327 {
6328         struct i802_bss *bss = priv;
6329         struct wpa_driver_nl80211_data *drv = bss->drv;
6330         struct ieee80211_hdr *hdr;
6331         size_t len;
6332         u8 *pos;
6333         int res;
6334         int qos = flags & WPA_STA_WMM;
6335
6336         if (drv->device_ap_sme || !drv->use_monitor)
6337                 return nl80211_send_eapol_data(bss, addr, data, data_len);
6338
6339         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
6340                 data_len;
6341         hdr = os_zalloc(len);
6342         if (hdr == NULL) {
6343                 printf("malloc() failed for i802_send_data(len=%lu)\n",
6344                        (unsigned long) len);
6345                 return -1;
6346         }
6347
6348         hdr->frame_control =
6349                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
6350         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
6351         if (encrypt)
6352                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
6353         if (qos) {
6354                 hdr->frame_control |=
6355                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
6356         }
6357
6358         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6359         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6360         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6361         pos = (u8 *) (hdr + 1);
6362
6363         if (qos) {
6364                 /* add an empty QoS header if needed */
6365                 pos[0] = 0;
6366                 pos[1] = 0;
6367                 pos += 2;
6368         }
6369
6370         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
6371         pos += sizeof(rfc1042_header);
6372         WPA_PUT_BE16(pos, ETH_P_PAE);
6373         pos += 2;
6374         memcpy(pos, data, data_len);
6375
6376         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
6377                                             0, 0, 0, 0);
6378         if (res < 0) {
6379                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
6380                            "failed: %d (%s)",
6381                            (unsigned long) len, errno, strerror(errno));
6382         }
6383         os_free(hdr);
6384
6385         return res;
6386 }
6387
6388
6389 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
6390                                             int total_flags,
6391                                             int flags_or, int flags_and)
6392 {
6393         struct i802_bss *bss = priv;
6394         struct wpa_driver_nl80211_data *drv = bss->drv;
6395         struct nl_msg *msg, *flags = NULL;
6396         struct nl80211_sta_flag_update upd;
6397
6398         msg = nlmsg_alloc();
6399         if (!msg)
6400                 return -ENOMEM;
6401
6402         flags = nlmsg_alloc();
6403         if (!flags) {
6404                 nlmsg_free(msg);
6405                 return -ENOMEM;
6406         }
6407
6408         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6409
6410         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6411                     if_nametoindex(bss->ifname));
6412         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6413
6414         /*
6415          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
6416          * can be removed eventually.
6417          */
6418         if (total_flags & WPA_STA_AUTHORIZED)
6419                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
6420
6421         if (total_flags & WPA_STA_WMM)
6422                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
6423
6424         if (total_flags & WPA_STA_SHORT_PREAMBLE)
6425                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
6426
6427         if (total_flags & WPA_STA_MFP)
6428                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
6429
6430         if (total_flags & WPA_STA_TDLS_PEER)
6431                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
6432
6433         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
6434                 goto nla_put_failure;
6435
6436         os_memset(&upd, 0, sizeof(upd));
6437         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
6438         upd.set = sta_flags_nl80211(flags_or);
6439         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
6440
6441         nlmsg_free(flags);
6442
6443         return send_and_recv_msgs(drv, msg, NULL, NULL);
6444  nla_put_failure:
6445         nlmsg_free(msg);
6446         nlmsg_free(flags);
6447         return -ENOBUFS;
6448 }
6449
6450
6451 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
6452                                  struct wpa_driver_associate_params *params)
6453 {
6454         enum nl80211_iftype nlmode;
6455
6456         if (params->p2p) {
6457                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
6458                            "group (GO)");
6459                 nlmode = NL80211_IFTYPE_P2P_GO;
6460         } else
6461                 nlmode = NL80211_IFTYPE_AP;
6462
6463         if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
6464             wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) {
6465                 nl80211_remove_monitor_interface(drv);
6466                 return -1;
6467         }
6468
6469         return 0;
6470 }
6471
6472
6473 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
6474 {
6475         struct nl_msg *msg;
6476         int ret = -1;
6477
6478         msg = nlmsg_alloc();
6479         if (!msg)
6480                 return -1;
6481
6482         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
6483         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6484         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6485         msg = NULL;
6486         if (ret) {
6487                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
6488                            "(%s)", ret, strerror(-ret));
6489                 goto nla_put_failure;
6490         }
6491
6492         ret = 0;
6493         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
6494
6495 nla_put_failure:
6496         nlmsg_free(msg);
6497         return ret;
6498 }
6499
6500
6501 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
6502                                    struct wpa_driver_associate_params *params)
6503 {
6504         struct nl_msg *msg;
6505         int ret = -1;
6506         int count = 0;
6507
6508         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
6509
6510         if (wpa_driver_nl80211_set_mode(&drv->first_bss,
6511                                         NL80211_IFTYPE_ADHOC)) {
6512                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
6513                            "IBSS mode");
6514                 return -1;
6515         }
6516
6517 retry:
6518         msg = nlmsg_alloc();
6519         if (!msg)
6520                 return -1;
6521
6522         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
6523         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6524
6525         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
6526                 goto nla_put_failure;
6527
6528         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
6529                           params->ssid, params->ssid_len);
6530         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6531                 params->ssid);
6532         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6533         drv->ssid_len = params->ssid_len;
6534
6535         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
6536         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6537
6538         ret = nl80211_set_conn_keys(params, msg);
6539         if (ret)
6540                 goto nla_put_failure;
6541
6542         if (params->bssid && params->fixed_bssid) {
6543                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
6544                            MAC2STR(params->bssid));
6545                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6546         }
6547
6548         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6549             params->key_mgmt_suite == KEY_MGMT_PSK ||
6550             params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 ||
6551             params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) {
6552                 wpa_printf(MSG_DEBUG, "  * control port");
6553                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6554         }
6555
6556         if (params->wpa_ie) {
6557                 wpa_hexdump(MSG_DEBUG,
6558                             "  * Extra IEs for Beacon/Probe Response frames",
6559                             params->wpa_ie, params->wpa_ie_len);
6560                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6561                         params->wpa_ie);
6562         }
6563
6564         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6565         msg = NULL;
6566         if (ret) {
6567                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
6568                            ret, strerror(-ret));
6569                 count++;
6570                 if (ret == -EALREADY && count == 1) {
6571                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
6572                                    "forced leave");
6573                         nl80211_leave_ibss(drv);
6574                         nlmsg_free(msg);
6575                         goto retry;
6576                 }
6577
6578                 goto nla_put_failure;
6579         }
6580         ret = 0;
6581         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
6582
6583 nla_put_failure:
6584         nlmsg_free(msg);
6585         return ret;
6586 }
6587
6588
6589 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
6590                                             u8 *bssid)
6591 {
6592         struct nl_msg *msg;
6593         int ret;
6594         struct nl80211_bss_info_arg arg;
6595
6596         os_memset(&arg, 0, sizeof(arg));
6597         msg = nlmsg_alloc();
6598         if (!msg)
6599                 goto nla_put_failure;
6600
6601         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
6602         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6603
6604         arg.drv = drv;
6605         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
6606         msg = NULL;
6607         if (ret == 0) {
6608                 if (is_zero_ether_addr(arg.assoc_bssid))
6609                         return -ENOTCONN;
6610                 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
6611                 return 0;
6612         }
6613         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
6614                    "(%s)", ret, strerror(-ret));
6615 nla_put_failure:
6616         nlmsg_free(msg);
6617         return drv->assoc_freq;
6618 }
6619
6620
6621 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
6622                               const u8 *bssid)
6623 {
6624         u8 addr[ETH_ALEN];
6625
6626         if (bssid == NULL) {
6627                 int res = nl80211_get_assoc_bssid(drv, addr);
6628                 if (res)
6629                         return res;
6630                 bssid = addr;
6631         }
6632
6633         return wpa_driver_nl80211_disconnect(drv, bssid,
6634                                              WLAN_REASON_PREV_AUTH_NOT_VALID);
6635 }
6636
6637
6638 static int wpa_driver_nl80211_connect(
6639         struct wpa_driver_nl80211_data *drv,
6640         struct wpa_driver_associate_params *params)
6641 {
6642         struct nl_msg *msg;
6643         enum nl80211_auth_type type;
6644         int ret = 0;
6645         int algs;
6646
6647         msg = nlmsg_alloc();
6648         if (!msg)
6649                 return -1;
6650
6651         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
6652         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
6653
6654         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6655         if (params->bssid) {
6656                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
6657                            MAC2STR(params->bssid));
6658                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6659         }
6660         if (params->freq) {
6661                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
6662                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6663         }
6664         if (params->bg_scan_period >= 0) {
6665                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
6666                            params->bg_scan_period);
6667                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
6668                             params->bg_scan_period);
6669         }
6670         if (params->ssid) {
6671                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
6672                                   params->ssid, params->ssid_len);
6673                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6674                         params->ssid);
6675                 if (params->ssid_len > sizeof(drv->ssid))
6676                         goto nla_put_failure;
6677                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6678                 drv->ssid_len = params->ssid_len;
6679         }
6680         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
6681         if (params->wpa_ie)
6682                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6683                         params->wpa_ie);
6684
6685         algs = 0;
6686         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6687                 algs++;
6688         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6689                 algs++;
6690         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6691                 algs++;
6692         if (algs > 1) {
6693                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
6694                            "selection");
6695                 goto skip_auth_type;
6696         }
6697
6698         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6699                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
6700         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6701                 type = NL80211_AUTHTYPE_SHARED_KEY;
6702         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6703                 type = NL80211_AUTHTYPE_NETWORK_EAP;
6704         else if (params->auth_alg & WPA_AUTH_ALG_FT)
6705                 type = NL80211_AUTHTYPE_FT;
6706         else
6707                 goto nla_put_failure;
6708
6709         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
6710         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
6711
6712 skip_auth_type:
6713         if (params->wpa_proto) {
6714                 enum nl80211_wpa_versions ver = 0;
6715
6716                 if (params->wpa_proto & WPA_PROTO_WPA)
6717                         ver |= NL80211_WPA_VERSION_1;
6718                 if (params->wpa_proto & WPA_PROTO_RSN)
6719                         ver |= NL80211_WPA_VERSION_2;
6720
6721                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
6722                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
6723         }
6724
6725         if (params->pairwise_suite != CIPHER_NONE) {
6726                 int cipher;
6727
6728                 switch (params->pairwise_suite) {
6729                 case CIPHER_WEP40:
6730                         cipher = WLAN_CIPHER_SUITE_WEP40;
6731                         break;
6732                 case CIPHER_WEP104:
6733                         cipher = WLAN_CIPHER_SUITE_WEP104;
6734                         break;
6735                 case CIPHER_CCMP:
6736                         cipher = WLAN_CIPHER_SUITE_CCMP;
6737                         break;
6738                 case CIPHER_TKIP:
6739                 default:
6740                         cipher = WLAN_CIPHER_SUITE_TKIP;
6741                         break;
6742                 }
6743                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6744         }
6745
6746         if (params->group_suite != CIPHER_NONE) {
6747                 int cipher;
6748
6749                 switch (params->group_suite) {
6750                 case CIPHER_WEP40:
6751                         cipher = WLAN_CIPHER_SUITE_WEP40;
6752                         break;
6753                 case CIPHER_WEP104:
6754                         cipher = WLAN_CIPHER_SUITE_WEP104;
6755                         break;
6756                 case CIPHER_CCMP:
6757                         cipher = WLAN_CIPHER_SUITE_CCMP;
6758                         break;
6759                 case CIPHER_TKIP:
6760                 default:
6761                         cipher = WLAN_CIPHER_SUITE_TKIP;
6762                         break;
6763                 }
6764                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6765         }
6766
6767         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6768             params->key_mgmt_suite == KEY_MGMT_PSK) {
6769                 int mgmt = WLAN_AKM_SUITE_PSK;
6770
6771                 switch (params->key_mgmt_suite) {
6772                 case KEY_MGMT_802_1X:
6773                         mgmt = WLAN_AKM_SUITE_8021X;
6774                         break;
6775                 case KEY_MGMT_PSK:
6776                 default:
6777                         mgmt = WLAN_AKM_SUITE_PSK;
6778                         break;
6779                 }
6780                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
6781         }
6782
6783         if (params->disable_ht)
6784                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6785
6786         if (params->htcaps && params->htcaps_mask) {
6787                 int sz = sizeof(struct ieee80211_ht_capabilities);
6788                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6789                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6790                         params->htcaps_mask);
6791         }
6792
6793         ret = nl80211_set_conn_keys(params, msg);
6794         if (ret)
6795                 goto nla_put_failure;
6796
6797         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6798         msg = NULL;
6799         if (ret) {
6800                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
6801                            "(%s)", ret, strerror(-ret));
6802                 /*
6803                  * cfg80211 does not currently accept new connection if we are
6804                  * already connected. As a workaround, force disconnection and
6805                  * try again once the driver indicates it completed
6806                  * disconnection.
6807                  */
6808                 if (ret == -EALREADY)
6809                         nl80211_disconnect(drv, params->bssid);
6810                 goto nla_put_failure;
6811         }
6812         ret = 0;
6813         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
6814
6815 nla_put_failure:
6816         nlmsg_free(msg);
6817         return ret;
6818
6819 }
6820
6821
6822 static int wpa_driver_nl80211_associate(
6823         void *priv, struct wpa_driver_associate_params *params)
6824 {
6825         struct i802_bss *bss = priv;
6826         struct wpa_driver_nl80211_data *drv = bss->drv;
6827         int ret = -1;
6828         struct nl_msg *msg;
6829
6830         if (params->mode == IEEE80211_MODE_AP)
6831                 return wpa_driver_nl80211_ap(drv, params);
6832
6833         if (params->mode == IEEE80211_MODE_IBSS)
6834                 return wpa_driver_nl80211_ibss(drv, params);
6835
6836         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
6837                 enum nl80211_iftype nlmode = params->p2p ?
6838                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
6839
6840                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
6841                         return -1;
6842                 return wpa_driver_nl80211_connect(drv, params);
6843         }
6844
6845         drv->associated = 0;
6846
6847         msg = nlmsg_alloc();
6848         if (!msg)
6849                 return -1;
6850
6851         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
6852                    drv->ifindex);
6853         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
6854
6855         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6856         if (params->bssid) {
6857                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
6858                            MAC2STR(params->bssid));
6859                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6860         }
6861         if (params->freq) {
6862                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
6863                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6864                 drv->assoc_freq = params->freq;
6865         } else
6866                 drv->assoc_freq = 0;
6867         if (params->bg_scan_period >= 0) {
6868                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
6869                            params->bg_scan_period);
6870                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
6871                             params->bg_scan_period);
6872         }
6873         if (params->ssid) {
6874                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
6875                                   params->ssid, params->ssid_len);
6876                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6877                         params->ssid);
6878                 if (params->ssid_len > sizeof(drv->ssid))
6879                         goto nla_put_failure;
6880                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6881                 drv->ssid_len = params->ssid_len;
6882         }
6883         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
6884         if (params->wpa_ie)
6885                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6886                         params->wpa_ie);
6887
6888         if (params->pairwise_suite != CIPHER_NONE) {
6889                 int cipher;
6890
6891                 switch (params->pairwise_suite) {
6892                 case CIPHER_WEP40:
6893                         cipher = WLAN_CIPHER_SUITE_WEP40;
6894                         break;
6895                 case CIPHER_WEP104:
6896                         cipher = WLAN_CIPHER_SUITE_WEP104;
6897                         break;
6898                 case CIPHER_CCMP:
6899                         cipher = WLAN_CIPHER_SUITE_CCMP;
6900                         break;
6901                 case CIPHER_TKIP:
6902                 default:
6903                         cipher = WLAN_CIPHER_SUITE_TKIP;
6904                         break;
6905                 }
6906                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
6907                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6908         }
6909
6910         if (params->group_suite != CIPHER_NONE) {
6911                 int cipher;
6912
6913                 switch (params->group_suite) {
6914                 case CIPHER_WEP40:
6915                         cipher = WLAN_CIPHER_SUITE_WEP40;
6916                         break;
6917                 case CIPHER_WEP104:
6918                         cipher = WLAN_CIPHER_SUITE_WEP104;
6919                         break;
6920                 case CIPHER_CCMP:
6921                         cipher = WLAN_CIPHER_SUITE_CCMP;
6922                         break;
6923                 case CIPHER_TKIP:
6924                 default:
6925                         cipher = WLAN_CIPHER_SUITE_TKIP;
6926                         break;
6927                 }
6928                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
6929                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6930         }
6931
6932 #ifdef CONFIG_IEEE80211W
6933         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
6934                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
6935 #endif /* CONFIG_IEEE80211W */
6936
6937         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6938
6939         if (params->prev_bssid) {
6940                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
6941                            MAC2STR(params->prev_bssid));
6942                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
6943                         params->prev_bssid);
6944         }
6945
6946         if (params->disable_ht)
6947                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6948
6949         if (params->htcaps && params->htcaps_mask) {
6950                 int sz = sizeof(struct ieee80211_ht_capabilities);
6951                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6952                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6953                         params->htcaps_mask);
6954         }
6955
6956         if (params->p2p)
6957                 wpa_printf(MSG_DEBUG, "  * P2P group");
6958
6959         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6960         msg = NULL;
6961         if (ret) {
6962                 wpa_dbg(drv->ctx, MSG_DEBUG,
6963                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
6964                         ret, strerror(-ret));
6965                 nl80211_dump_scan(drv);
6966                 goto nla_put_failure;
6967         }
6968         ret = 0;
6969         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
6970                    "successfully");
6971
6972 nla_put_failure:
6973         nlmsg_free(msg);
6974         return ret;
6975 }
6976
6977
6978 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
6979                             int ifindex, enum nl80211_iftype mode)
6980 {
6981         struct nl_msg *msg;
6982         int ret = -ENOBUFS;
6983
6984         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
6985                    ifindex, mode, nl80211_iftype_str(mode));
6986
6987         msg = nlmsg_alloc();
6988         if (!msg)
6989                 return -ENOMEM;
6990
6991         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
6992         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
6993         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
6994
6995         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6996         msg = NULL;
6997         if (!ret)
6998                 return 0;
6999 nla_put_failure:
7000         nlmsg_free(msg);
7001         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
7002                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
7003         return ret;
7004 }
7005
7006
7007 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
7008                                        enum nl80211_iftype nlmode)
7009 {
7010         struct wpa_driver_nl80211_data *drv = bss->drv;
7011         int ret = -1;
7012         int i;
7013         int was_ap = is_ap_interface(drv->nlmode);
7014         int res;
7015
7016         res = nl80211_set_mode(drv, drv->ifindex, nlmode);
7017         if (res == 0) {
7018                 drv->nlmode = nlmode;
7019                 ret = 0;
7020                 goto done;
7021         }
7022
7023         if (res == -ENODEV)
7024                 return -1;
7025
7026         if (nlmode == drv->nlmode) {
7027                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
7028                            "requested mode - ignore error");
7029                 ret = 0;
7030                 goto done; /* Already in the requested mode */
7031         }
7032
7033         /* mac80211 doesn't allow mode changes while the device is up, so
7034          * take the device down, try to set the mode again, and bring the
7035          * device back up.
7036          */
7037         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
7038                    "interface down");
7039         for (i = 0; i < 10; i++) {
7040                 res = linux_set_iface_flags(drv->global->ioctl_sock,
7041                                             bss->ifname, 0);
7042                 if (res == -EACCES || res == -ENODEV)
7043                         break;
7044                 if (res == 0) {
7045                         /* Try to set the mode again while the interface is
7046                          * down */
7047                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
7048                         if (ret == -EACCES)
7049                                 break;
7050                         res = linux_set_iface_flags(drv->global->ioctl_sock,
7051                                                     bss->ifname, 1);
7052                         if (res && !ret)
7053                                 ret = -1;
7054                         else if (ret != -EBUSY)
7055                                 break;
7056                 } else
7057                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
7058                                    "interface down");
7059                 os_sleep(0, 100000);
7060         }
7061
7062         if (!ret) {
7063                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
7064                            "interface is down");
7065                 drv->nlmode = nlmode;
7066                 drv->ignore_if_down_event = 1;
7067         }
7068
7069 done:
7070         if (ret) {
7071                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
7072                            "from %d failed", nlmode, drv->nlmode);
7073                 return ret;
7074         }
7075
7076         if (is_ap_interface(nlmode)) {
7077                 nl80211_mgmt_unsubscribe(bss, "start AP");
7078                 /* Setup additional AP mode functionality if needed */
7079                 if (nl80211_setup_ap(bss))
7080                         return -1;
7081         } else if (was_ap) {
7082                 /* Remove additional AP mode functionality */
7083                 nl80211_teardown_ap(bss);
7084         } else {
7085                 nl80211_mgmt_unsubscribe(bss, "mode change");
7086         }
7087
7088         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
7089             nl80211_mgmt_subscribe_non_ap(bss) < 0)
7090                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
7091                            "frame processing - ignore for now");
7092
7093         return 0;
7094 }
7095
7096
7097 static int wpa_driver_nl80211_get_capa(void *priv,
7098                                        struct wpa_driver_capa *capa)
7099 {
7100         struct i802_bss *bss = priv;
7101         struct wpa_driver_nl80211_data *drv = bss->drv;
7102         if (!drv->has_capability)
7103                 return -1;
7104         os_memcpy(capa, &drv->capa, sizeof(*capa));
7105         return 0;
7106 }
7107
7108
7109 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
7110 {
7111         struct i802_bss *bss = priv;
7112         struct wpa_driver_nl80211_data *drv = bss->drv;
7113
7114         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
7115                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
7116         drv->operstate = state;
7117         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
7118                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
7119 }
7120
7121
7122 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
7123 {
7124         struct i802_bss *bss = priv;
7125         struct wpa_driver_nl80211_data *drv = bss->drv;
7126         struct nl_msg *msg;
7127         struct nl80211_sta_flag_update upd;
7128
7129         msg = nlmsg_alloc();
7130         if (!msg)
7131                 return -ENOMEM;
7132
7133         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7134
7135         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7136                     if_nametoindex(bss->ifname));
7137         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
7138
7139         os_memset(&upd, 0, sizeof(upd));
7140         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
7141         if (authorized)
7142                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
7143         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7144
7145         return send_and_recv_msgs(drv, msg, NULL, NULL);
7146  nla_put_failure:
7147         nlmsg_free(msg);
7148         return -ENOBUFS;
7149 }
7150
7151
7152 /* Set kernel driver on given frequency (MHz) */
7153 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
7154 {
7155         struct i802_bss *bss = priv;
7156         return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled,
7157                                            freq->sec_channel_offset);
7158 }
7159
7160
7161 #if defined(HOSTAPD) || defined(CONFIG_AP)
7162
7163 static inline int min_int(int a, int b)
7164 {
7165         if (a < b)
7166                 return a;
7167         return b;
7168 }
7169
7170
7171 static int get_key_handler(struct nl_msg *msg, void *arg)
7172 {
7173         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7174         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7175
7176         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7177                   genlmsg_attrlen(gnlh, 0), NULL);
7178
7179         /*
7180          * TODO: validate the key index and mac address!
7181          * Otherwise, there's a race condition as soon as
7182          * the kernel starts sending key notifications.
7183          */
7184
7185         if (tb[NL80211_ATTR_KEY_SEQ])
7186                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
7187                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
7188         return NL_SKIP;
7189 }
7190
7191
7192 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
7193                            int idx, u8 *seq)
7194 {
7195         struct i802_bss *bss = priv;
7196         struct wpa_driver_nl80211_data *drv = bss->drv;
7197         struct nl_msg *msg;
7198
7199         msg = nlmsg_alloc();
7200         if (!msg)
7201                 return -ENOMEM;
7202
7203         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
7204
7205         if (addr)
7206                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7207         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
7208         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
7209
7210         memset(seq, 0, 6);
7211
7212         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
7213  nla_put_failure:
7214         nlmsg_free(msg);
7215         return -ENOBUFS;
7216 }
7217
7218
7219 static int i802_set_rts(void *priv, int rts)
7220 {
7221         struct i802_bss *bss = priv;
7222         struct wpa_driver_nl80211_data *drv = bss->drv;
7223         struct nl_msg *msg;
7224         int ret = -ENOBUFS;
7225         u32 val;
7226
7227         msg = nlmsg_alloc();
7228         if (!msg)
7229                 return -ENOMEM;
7230
7231         if (rts >= 2347)
7232                 val = (u32) -1;
7233         else
7234                 val = rts;
7235
7236         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7237         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7238         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
7239
7240         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7241         msg = NULL;
7242         if (!ret)
7243                 return 0;
7244 nla_put_failure:
7245         nlmsg_free(msg);
7246         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
7247                    "%d (%s)", rts, ret, strerror(-ret));
7248         return ret;
7249 }
7250
7251
7252 static int i802_set_frag(void *priv, int frag)
7253 {
7254         struct i802_bss *bss = priv;
7255         struct wpa_driver_nl80211_data *drv = bss->drv;
7256         struct nl_msg *msg;
7257         int ret = -ENOBUFS;
7258         u32 val;
7259
7260         msg = nlmsg_alloc();
7261         if (!msg)
7262                 return -ENOMEM;
7263
7264         if (frag >= 2346)
7265                 val = (u32) -1;
7266         else
7267                 val = frag;
7268
7269         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7270         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7271         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
7272
7273         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7274         msg = NULL;
7275         if (!ret)
7276                 return 0;
7277 nla_put_failure:
7278         nlmsg_free(msg);
7279         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
7280                    "%d: %d (%s)", frag, ret, strerror(-ret));
7281         return ret;
7282 }
7283
7284
7285 static int i802_flush(void *priv)
7286 {
7287         struct i802_bss *bss = priv;
7288         struct wpa_driver_nl80211_data *drv = bss->drv;
7289         struct nl_msg *msg;
7290         int res;
7291
7292         msg = nlmsg_alloc();
7293         if (!msg)
7294                 return -1;
7295
7296         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
7297
7298         /*
7299          * XXX: FIX! this needs to flush all VLANs too
7300          */
7301         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7302                     if_nametoindex(bss->ifname));
7303
7304         res = send_and_recv_msgs(drv, msg, NULL, NULL);
7305         if (res) {
7306                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
7307                            "(%s)", res, strerror(-res));
7308         }
7309         return res;
7310  nla_put_failure:
7311         nlmsg_free(msg);
7312         return -ENOBUFS;
7313 }
7314
7315
7316 static int get_sta_handler(struct nl_msg *msg, void *arg)
7317 {
7318         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7319         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7320         struct hostap_sta_driver_data *data = arg;
7321         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
7322         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
7323                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
7324                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
7325                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
7326                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
7327                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
7328         };
7329
7330         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7331                   genlmsg_attrlen(gnlh, 0), NULL);
7332
7333         /*
7334          * TODO: validate the interface and mac address!
7335          * Otherwise, there's a race condition as soon as
7336          * the kernel starts sending station notifications.
7337          */
7338
7339         if (!tb[NL80211_ATTR_STA_INFO]) {
7340                 wpa_printf(MSG_DEBUG, "sta stats missing!");
7341                 return NL_SKIP;
7342         }
7343         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
7344                              tb[NL80211_ATTR_STA_INFO],
7345                              stats_policy)) {
7346                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
7347                 return NL_SKIP;
7348         }
7349
7350         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
7351                 data->inactive_msec =
7352                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
7353         if (stats[NL80211_STA_INFO_RX_BYTES])
7354                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
7355         if (stats[NL80211_STA_INFO_TX_BYTES])
7356                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
7357         if (stats[NL80211_STA_INFO_RX_PACKETS])
7358                 data->rx_packets =
7359                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
7360         if (stats[NL80211_STA_INFO_TX_PACKETS])
7361                 data->tx_packets =
7362                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
7363
7364         return NL_SKIP;
7365 }
7366
7367 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
7368                               const u8 *addr)
7369 {
7370         struct i802_bss *bss = priv;
7371         struct wpa_driver_nl80211_data *drv = bss->drv;
7372         struct nl_msg *msg;
7373
7374         os_memset(data, 0, sizeof(*data));
7375         msg = nlmsg_alloc();
7376         if (!msg)
7377                 return -ENOMEM;
7378
7379         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
7380
7381         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7382         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7383
7384         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
7385  nla_put_failure:
7386         nlmsg_free(msg);
7387         return -ENOBUFS;
7388 }
7389
7390
7391 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
7392                                     int cw_min, int cw_max, int burst_time)
7393 {
7394         struct i802_bss *bss = priv;
7395         struct wpa_driver_nl80211_data *drv = bss->drv;
7396         struct nl_msg *msg;
7397         struct nlattr *txq, *params;
7398
7399         msg = nlmsg_alloc();
7400         if (!msg)
7401                 return -1;
7402
7403         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7404
7405         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7406
7407         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
7408         if (!txq)
7409                 goto nla_put_failure;
7410
7411         /* We are only sending parameters for a single TXQ at a time */
7412         params = nla_nest_start(msg, 1);
7413         if (!params)
7414                 goto nla_put_failure;
7415
7416         switch (queue) {
7417         case 0:
7418                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
7419                 break;
7420         case 1:
7421                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
7422                 break;
7423         case 2:
7424                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
7425                 break;
7426         case 3:
7427                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
7428                 break;
7429         }
7430         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
7431          * 32 usec, so need to convert the value here. */
7432         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
7433         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
7434         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
7435         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
7436
7437         nla_nest_end(msg, params);
7438
7439         nla_nest_end(msg, txq);
7440
7441         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7442                 return 0;
7443         msg = NULL;
7444  nla_put_failure:
7445         nlmsg_free(msg);
7446         return -1;
7447 }
7448
7449
7450 static int i802_set_sta_vlan(void *priv, const u8 *addr,
7451                              const char *ifname, int vlan_id)
7452 {
7453         struct i802_bss *bss = priv;
7454         struct wpa_driver_nl80211_data *drv = bss->drv;
7455         struct nl_msg *msg;
7456         int ret = -ENOBUFS;
7457
7458         msg = nlmsg_alloc();
7459         if (!msg)
7460                 return -ENOMEM;
7461
7462         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7463
7464         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7465                     if_nametoindex(bss->ifname));
7466         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7467         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
7468                     if_nametoindex(ifname));
7469
7470         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7471         msg = NULL;
7472         if (ret < 0) {
7473                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
7474                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
7475                            MAC2STR(addr), ifname, vlan_id, ret,
7476                            strerror(-ret));
7477         }
7478  nla_put_failure:
7479         nlmsg_free(msg);
7480         return ret;
7481 }
7482
7483
7484 static int i802_get_inact_sec(void *priv, const u8 *addr)
7485 {
7486         struct hostap_sta_driver_data data;
7487         int ret;
7488
7489         data.inactive_msec = (unsigned long) -1;
7490         ret = i802_read_sta_data(priv, &data, addr);
7491         if (ret || data.inactive_msec == (unsigned long) -1)
7492                 return -1;
7493         return data.inactive_msec / 1000;
7494 }
7495
7496
7497 static int i802_sta_clear_stats(void *priv, const u8 *addr)
7498 {
7499 #if 0
7500         /* TODO */
7501 #endif
7502         return 0;
7503 }
7504
7505
7506 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
7507                            int reason)
7508 {
7509         struct i802_bss *bss = priv;
7510         struct wpa_driver_nl80211_data *drv = bss->drv;
7511         struct ieee80211_mgmt mgmt;
7512
7513         if (drv->device_ap_sme)
7514                 return wpa_driver_nl80211_sta_remove(bss, addr);
7515
7516         memset(&mgmt, 0, sizeof(mgmt));
7517         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7518                                           WLAN_FC_STYPE_DEAUTH);
7519         memcpy(mgmt.da, addr, ETH_ALEN);
7520         memcpy(mgmt.sa, own_addr, ETH_ALEN);
7521         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7522         mgmt.u.deauth.reason_code = host_to_le16(reason);
7523         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7524                                             IEEE80211_HDRLEN +
7525                                             sizeof(mgmt.u.deauth), 0);
7526 }
7527
7528
7529 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
7530                              int reason)
7531 {
7532         struct i802_bss *bss = priv;
7533         struct wpa_driver_nl80211_data *drv = bss->drv;
7534         struct ieee80211_mgmt mgmt;
7535
7536         if (drv->device_ap_sme)
7537                 return wpa_driver_nl80211_sta_remove(bss, addr);
7538
7539         memset(&mgmt, 0, sizeof(mgmt));
7540         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7541                                           WLAN_FC_STYPE_DISASSOC);
7542         memcpy(mgmt.da, addr, ETH_ALEN);
7543         memcpy(mgmt.sa, own_addr, ETH_ALEN);
7544         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7545         mgmt.u.disassoc.reason_code = host_to_le16(reason);
7546         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7547                                             IEEE80211_HDRLEN +
7548                                             sizeof(mgmt.u.disassoc), 0);
7549 }
7550
7551 #endif /* HOSTAPD || CONFIG_AP */
7552
7553 #ifdef HOSTAPD
7554
7555 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7556 {
7557         int i;
7558         int *old;
7559
7560         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
7561                    ifidx);
7562         for (i = 0; i < drv->num_if_indices; i++) {
7563                 if (drv->if_indices[i] == 0) {
7564                         drv->if_indices[i] = ifidx;
7565                         return;
7566                 }
7567         }
7568
7569         if (drv->if_indices != drv->default_if_indices)
7570                 old = drv->if_indices;
7571         else
7572                 old = NULL;
7573
7574         drv->if_indices = os_realloc(old,
7575                                      sizeof(int) * (drv->num_if_indices + 1));
7576         if (!drv->if_indices) {
7577                 if (!old)
7578                         drv->if_indices = drv->default_if_indices;
7579                 else
7580                         drv->if_indices = old;
7581                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
7582                            "interfaces");
7583                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
7584                 return;
7585         } else if (!old)
7586                 os_memcpy(drv->if_indices, drv->default_if_indices,
7587                           sizeof(drv->default_if_indices));
7588         drv->if_indices[drv->num_if_indices] = ifidx;
7589         drv->num_if_indices++;
7590 }
7591
7592
7593 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7594 {
7595         int i;
7596
7597         for (i = 0; i < drv->num_if_indices; i++) {
7598                 if (drv->if_indices[i] == ifidx) {
7599                         drv->if_indices[i] = 0;
7600                         break;
7601                 }
7602         }
7603 }
7604
7605
7606 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7607 {
7608         int i;
7609
7610         for (i = 0; i < drv->num_if_indices; i++)
7611                 if (drv->if_indices[i] == ifidx)
7612                         return 1;
7613
7614         return 0;
7615 }
7616
7617
7618 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
7619                             const char *bridge_ifname)
7620 {
7621         struct i802_bss *bss = priv;
7622         struct wpa_driver_nl80211_data *drv = bss->drv;
7623         char name[IFNAMSIZ + 1];
7624
7625         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
7626         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
7627                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
7628         if (val) {
7629                 if (!if_nametoindex(name)) {
7630                         if (nl80211_create_iface(drv, name,
7631                                                  NL80211_IFTYPE_AP_VLAN,
7632                                                  NULL, 1) < 0)
7633                                 return -1;
7634                         if (bridge_ifname &&
7635                             linux_br_add_if(drv->global->ioctl_sock,
7636                                             bridge_ifname, name) < 0)
7637                                 return -1;
7638                 }
7639                 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
7640                 return i802_set_sta_vlan(priv, addr, name, 0);
7641         } else {
7642                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
7643                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
7644                                                     name);
7645         }
7646 }
7647
7648
7649 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
7650 {
7651         struct wpa_driver_nl80211_data *drv = eloop_ctx;
7652         struct sockaddr_ll lladdr;
7653         unsigned char buf[3000];
7654         int len;
7655         socklen_t fromlen = sizeof(lladdr);
7656
7657         len = recvfrom(sock, buf, sizeof(buf), 0,
7658                        (struct sockaddr *)&lladdr, &fromlen);
7659         if (len < 0) {
7660                 perror("recv");
7661                 return;
7662         }
7663
7664         if (have_ifidx(drv, lladdr.sll_ifindex))
7665                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
7666 }
7667
7668
7669 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
7670                              struct i802_bss *bss,
7671                              const char *brname, const char *ifname)
7672 {
7673         int ifindex;
7674         char in_br[IFNAMSIZ];
7675
7676         os_strlcpy(bss->brname, brname, IFNAMSIZ);
7677         ifindex = if_nametoindex(brname);
7678         if (ifindex == 0) {
7679                 /*
7680                  * Bridge was configured, but the bridge device does
7681                  * not exist. Try to add it now.
7682                  */
7683                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
7684                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
7685                                    "bridge interface %s: %s",
7686                                    brname, strerror(errno));
7687                         return -1;
7688                 }
7689                 bss->added_bridge = 1;
7690                 add_ifidx(drv, if_nametoindex(brname));
7691         }
7692
7693         if (linux_br_get(in_br, ifname) == 0) {
7694                 if (os_strcmp(in_br, brname) == 0)
7695                         return 0; /* already in the bridge */
7696
7697                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
7698                            "bridge %s", ifname, in_br);
7699                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
7700                     0) {
7701                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
7702                                    "remove interface %s from bridge "
7703                                    "%s: %s",
7704                                    ifname, brname, strerror(errno));
7705                         return -1;
7706                 }
7707         }
7708
7709         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
7710                    ifname, brname);
7711         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
7712                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
7713                            "into bridge %s: %s",
7714                            ifname, brname, strerror(errno));
7715                 return -1;
7716         }
7717         bss->added_if_into_bridge = 1;
7718
7719         return 0;
7720 }
7721
7722
7723 static void *i802_init(struct hostapd_data *hapd,
7724                        struct wpa_init_params *params)
7725 {
7726         struct wpa_driver_nl80211_data *drv;
7727         struct i802_bss *bss;
7728         size_t i;
7729         char brname[IFNAMSIZ];
7730         int ifindex, br_ifindex;
7731         int br_added = 0;
7732
7733         bss = wpa_driver_nl80211_init(hapd, params->ifname,
7734                                       params->global_priv);
7735         if (bss == NULL)
7736                 return NULL;
7737
7738         drv = bss->drv;
7739         drv->nlmode = NL80211_IFTYPE_AP;
7740         drv->eapol_sock = -1;
7741
7742         if (linux_br_get(brname, params->ifname) == 0) {
7743                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
7744                            params->ifname, brname);
7745                 br_ifindex = if_nametoindex(brname);
7746         } else {
7747                 brname[0] = '\0';
7748                 br_ifindex = 0;
7749         }
7750
7751         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
7752         drv->if_indices = drv->default_if_indices;
7753         for (i = 0; i < params->num_bridge; i++) {
7754                 if (params->bridge[i]) {
7755                         ifindex = if_nametoindex(params->bridge[i]);
7756                         if (ifindex)
7757                                 add_ifidx(drv, ifindex);
7758                         if (ifindex == br_ifindex)
7759                                 br_added = 1;
7760                 }
7761         }
7762         if (!br_added && br_ifindex &&
7763             (params->num_bridge == 0 || !params->bridge[0]))
7764                 add_ifidx(drv, br_ifindex);
7765
7766         /* start listening for EAPOL on the default AP interface */
7767         add_ifidx(drv, drv->ifindex);
7768
7769         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
7770                 goto failed;
7771
7772         if (params->bssid) {
7773                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7774                                        params->bssid))
7775                         goto failed;
7776         }
7777
7778         if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
7779                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
7780                            "into AP mode", bss->ifname);
7781                 goto failed;
7782         }
7783
7784         if (params->num_bridge && params->bridge[0] &&
7785             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
7786                 goto failed;
7787
7788         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
7789                 goto failed;
7790
7791         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
7792         if (drv->eapol_sock < 0) {
7793                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
7794                 goto failed;
7795         }
7796
7797         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
7798         {
7799                 printf("Could not register read socket for eapol\n");
7800                 goto failed;
7801         }
7802
7803         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7804                                params->own_addr))
7805                 goto failed;
7806
7807         memcpy(bss->addr, params->own_addr, ETH_ALEN);
7808
7809         return bss;
7810
7811 failed:
7812         wpa_driver_nl80211_deinit(bss);
7813         return NULL;
7814 }
7815
7816
7817 static void i802_deinit(void *priv)
7818 {
7819         wpa_driver_nl80211_deinit(priv);
7820 }
7821
7822 #endif /* HOSTAPD */
7823
7824
7825 static enum nl80211_iftype wpa_driver_nl80211_if_type(
7826         enum wpa_driver_if_type type)
7827 {
7828         switch (type) {
7829         case WPA_IF_STATION:
7830                 return NL80211_IFTYPE_STATION;
7831         case WPA_IF_P2P_CLIENT:
7832         case WPA_IF_P2P_GROUP:
7833                 return NL80211_IFTYPE_P2P_CLIENT;
7834         case WPA_IF_AP_VLAN:
7835                 return NL80211_IFTYPE_AP_VLAN;
7836         case WPA_IF_AP_BSS:
7837                 return NL80211_IFTYPE_AP;
7838         case WPA_IF_P2P_GO:
7839                 return NL80211_IFTYPE_P2P_GO;
7840         }
7841         return -1;
7842 }
7843
7844
7845 #ifdef CONFIG_P2P
7846
7847 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
7848 {
7849         struct wpa_driver_nl80211_data *drv;
7850         dl_list_for_each(drv, &global->interfaces,
7851                          struct wpa_driver_nl80211_data, list) {
7852                 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0)
7853                         return 1;
7854         }
7855         return 0;
7856 }
7857
7858
7859 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
7860                                       u8 *new_addr)
7861 {
7862         unsigned int idx;
7863
7864         if (!drv->global)
7865                 return -1;
7866
7867         os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN);
7868         for (idx = 0; idx < 64; idx++) {
7869                 new_addr[0] = drv->first_bss.addr[0] | 0x02;
7870                 new_addr[0] ^= idx << 2;
7871                 if (!nl80211_addr_in_use(drv->global, new_addr))
7872                         break;
7873         }
7874         if (idx == 64)
7875                 return -1;
7876
7877         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
7878                    MACSTR, MAC2STR(new_addr));
7879
7880         return 0;
7881 }
7882
7883 #endif /* CONFIG_P2P */
7884
7885
7886 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
7887                                      const char *ifname, const u8 *addr,
7888                                      void *bss_ctx, void **drv_priv,
7889                                      char *force_ifname, u8 *if_addr,
7890                                      const char *bridge)
7891 {
7892         struct i802_bss *bss = priv;
7893         struct wpa_driver_nl80211_data *drv = bss->drv;
7894         int ifidx;
7895 #ifdef HOSTAPD
7896         struct i802_bss *new_bss = NULL;
7897
7898         if (type == WPA_IF_AP_BSS) {
7899                 new_bss = os_zalloc(sizeof(*new_bss));
7900                 if (new_bss == NULL)
7901                         return -1;
7902         }
7903 #endif /* HOSTAPD */
7904
7905         if (addr)
7906                 os_memcpy(if_addr, addr, ETH_ALEN);
7907         ifidx = nl80211_create_iface(drv, ifname,
7908                                      wpa_driver_nl80211_if_type(type), addr,
7909                                      0);
7910         if (ifidx < 0) {
7911 #ifdef HOSTAPD
7912                 os_free(new_bss);
7913 #endif /* HOSTAPD */
7914                 return -1;
7915         }
7916
7917         if (!addr &&
7918             linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7919                                if_addr) < 0) {
7920                 nl80211_remove_iface(drv, ifidx);
7921                 return -1;
7922         }
7923
7924 #ifdef CONFIG_P2P
7925         if (!addr &&
7926             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
7927              type == WPA_IF_P2P_GO)) {
7928                 /* Enforce unique P2P Interface Address */
7929                 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
7930
7931                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7932                                        own_addr) < 0 ||
7933                     linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
7934                                        new_addr) < 0) {
7935                         nl80211_remove_iface(drv, ifidx);
7936                         return -1;
7937                 }
7938                 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
7939                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
7940                                    "for P2P group interface");
7941                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
7942                                 nl80211_remove_iface(drv, ifidx);
7943                                 return -1;
7944                         }
7945                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
7946                                                new_addr) < 0) {
7947                                 nl80211_remove_iface(drv, ifidx);
7948                                 return -1;
7949                         }
7950                 }
7951                 os_memcpy(if_addr, new_addr, ETH_ALEN);
7952         }
7953 #endif /* CONFIG_P2P */
7954
7955 #ifdef HOSTAPD
7956         if (bridge &&
7957             i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
7958                 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
7959                            "interface %s to a bridge %s", ifname, bridge);
7960                 nl80211_remove_iface(drv, ifidx);
7961                 os_free(new_bss);
7962                 return -1;
7963         }
7964
7965         if (type == WPA_IF_AP_BSS) {
7966                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
7967                 {
7968                         nl80211_remove_iface(drv, ifidx);
7969                         os_free(new_bss);
7970                         return -1;
7971                 }
7972                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
7973                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
7974                 new_bss->ifindex = ifidx;
7975                 new_bss->drv = drv;
7976                 new_bss->next = drv->first_bss.next;
7977                 new_bss->freq = drv->first_bss.freq;
7978                 drv->first_bss.next = new_bss;
7979                 if (drv_priv)
7980                         *drv_priv = new_bss;
7981                 nl80211_init_bss(new_bss);
7982
7983                 /* Subscribe management frames for this WPA_IF_AP_BSS */
7984                 if (nl80211_setup_ap(new_bss))
7985                         return -1;
7986         }
7987 #endif /* HOSTAPD */
7988
7989         if (drv->global)
7990                 drv->global->if_add_ifindex = ifidx;
7991
7992         return 0;
7993 }
7994
7995
7996 static int wpa_driver_nl80211_if_remove(void *priv,
7997                                         enum wpa_driver_if_type type,
7998                                         const char *ifname)
7999 {
8000         struct i802_bss *bss = priv;
8001         struct wpa_driver_nl80211_data *drv = bss->drv;
8002         int ifindex = if_nametoindex(ifname);
8003
8004         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
8005                    __func__, type, ifname, ifindex);
8006         if (ifindex <= 0)
8007                 return -1;
8008
8009 #ifdef HOSTAPD
8010         if (bss->added_if_into_bridge) {
8011                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
8012                                     bss->ifname) < 0)
8013                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8014                                    "interface %s from bridge %s: %s",
8015                                    bss->ifname, bss->brname, strerror(errno));
8016         }
8017         if (bss->added_bridge) {
8018                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
8019                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8020                                    "bridge %s: %s",
8021                                    bss->brname, strerror(errno));
8022         }
8023 #endif /* HOSTAPD */
8024
8025         nl80211_remove_iface(drv, ifindex);
8026
8027 #ifdef HOSTAPD
8028         if (type != WPA_IF_AP_BSS)
8029                 return 0;
8030
8031         if (bss != &drv->first_bss) {
8032                 struct i802_bss *tbss;
8033
8034                 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
8035                         if (tbss->next == bss) {
8036                                 tbss->next = bss->next;
8037                                 /* Unsubscribe management frames */
8038                                 nl80211_teardown_ap(bss);
8039                                 nl80211_destroy_bss(bss);
8040                                 os_free(bss);
8041                                 bss = NULL;
8042                                 break;
8043                         }
8044                 }
8045                 if (bss)
8046                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
8047                                    "BSS %p in the list", __func__, bss);
8048         }
8049 #endif /* HOSTAPD */
8050
8051         return 0;
8052 }
8053
8054
8055 static int cookie_handler(struct nl_msg *msg, void *arg)
8056 {
8057         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8058         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8059         u64 *cookie = arg;
8060         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8061                   genlmsg_attrlen(gnlh, 0), NULL);
8062         if (tb[NL80211_ATTR_COOKIE])
8063                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
8064         return NL_SKIP;
8065 }
8066
8067
8068 static int nl80211_send_frame_cmd(struct i802_bss *bss,
8069                                   unsigned int freq, unsigned int wait,
8070                                   const u8 *buf, size_t buf_len,
8071                                   u64 *cookie_out, int no_cck, int no_ack,
8072                                   int offchanok)
8073 {
8074         struct wpa_driver_nl80211_data *drv = bss->drv;
8075         struct nl_msg *msg;
8076         u64 cookie;
8077         int ret = -1;
8078
8079         msg = nlmsg_alloc();
8080         if (!msg)
8081                 return -1;
8082
8083         wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
8084                    "no_ack=%d offchanok=%d",
8085                    freq, wait, no_cck, no_ack, offchanok);
8086         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
8087
8088         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8089         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8090         if (wait)
8091                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
8092         if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX))
8093                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
8094         if (no_cck)
8095                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
8096         if (no_ack)
8097                 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
8098
8099         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
8100
8101         cookie = 0;
8102         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8103         msg = NULL;
8104         if (ret) {
8105                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
8106                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
8107                            freq, wait);
8108                 goto nla_put_failure;
8109         }
8110         wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; "
8111                    "cookie 0x%llx", no_ack ? " (no ACK)" : "",
8112                    (long long unsigned int) cookie);
8113
8114         if (cookie_out)
8115                 *cookie_out = no_ack ? (u64) -1 : cookie;
8116
8117 nla_put_failure:
8118         nlmsg_free(msg);
8119         return ret;
8120 }
8121
8122
8123 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
8124                                           unsigned int wait_time,
8125                                           const u8 *dst, const u8 *src,
8126                                           const u8 *bssid,
8127                                           const u8 *data, size_t data_len,
8128                                           int no_cck)
8129 {
8130         struct i802_bss *bss = priv;
8131         struct wpa_driver_nl80211_data *drv = bss->drv;
8132         int ret = -1;
8133         u8 *buf;
8134         struct ieee80211_hdr *hdr;
8135
8136         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
8137                    "freq=%u MHz wait=%d ms no_cck=%d)",
8138                    drv->ifindex, freq, wait_time, no_cck);
8139
8140         buf = os_zalloc(24 + data_len);
8141         if (buf == NULL)
8142                 return ret;
8143         os_memcpy(buf + 24, data, data_len);
8144         hdr = (struct ieee80211_hdr *) buf;
8145         hdr->frame_control =
8146                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
8147         os_memcpy(hdr->addr1, dst, ETH_ALEN);
8148         os_memcpy(hdr->addr2, src, ETH_ALEN);
8149         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
8150
8151         if (is_ap_interface(drv->nlmode))
8152                 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf,
8153                                                         24 + data_len,
8154                                                         0, freq, no_cck, 1,
8155                                                         wait_time);
8156         else
8157                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
8158                                              24 + data_len,
8159                                              &drv->send_action_cookie,
8160                                              no_cck, 0, 1);
8161
8162         os_free(buf);
8163         return ret;
8164 }
8165
8166
8167 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
8168 {
8169         struct i802_bss *bss = priv;
8170         struct wpa_driver_nl80211_data *drv = bss->drv;
8171         struct nl_msg *msg;
8172         int ret;
8173
8174         msg = nlmsg_alloc();
8175         if (!msg)
8176                 return;
8177
8178         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
8179
8180         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8181         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
8182
8183         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8184         msg = NULL;
8185         if (ret)
8186                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
8187                            "(%s)", ret, strerror(-ret));
8188
8189  nla_put_failure:
8190         nlmsg_free(msg);
8191 }
8192
8193
8194 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
8195                                                 unsigned int duration)
8196 {
8197         struct i802_bss *bss = priv;
8198         struct wpa_driver_nl80211_data *drv = bss->drv;
8199         struct nl_msg *msg;
8200         int ret;
8201         u64 cookie;
8202
8203         msg = nlmsg_alloc();
8204         if (!msg)
8205                 return -1;
8206
8207         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
8208
8209         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8210         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8211         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
8212
8213         cookie = 0;
8214         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8215         msg = NULL;
8216         if (ret == 0) {
8217                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
8218                            "0x%llx for freq=%u MHz duration=%u",
8219                            (long long unsigned int) cookie, freq, duration);
8220                 drv->remain_on_chan_cookie = cookie;
8221                 drv->pending_remain_on_chan = 1;
8222                 return 0;
8223         }
8224         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
8225                    "(freq=%d duration=%u): %d (%s)",
8226                    freq, duration, ret, strerror(-ret));
8227 nla_put_failure:
8228         nlmsg_free(msg);
8229         return -1;
8230 }
8231
8232
8233 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
8234 {
8235         struct i802_bss *bss = priv;
8236         struct wpa_driver_nl80211_data *drv = bss->drv;
8237         struct nl_msg *msg;
8238         int ret;
8239
8240         if (!drv->pending_remain_on_chan) {
8241                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
8242                            "to cancel");
8243                 return -1;
8244         }
8245
8246         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
8247                    "0x%llx",
8248                    (long long unsigned int) drv->remain_on_chan_cookie);
8249
8250         msg = nlmsg_alloc();
8251         if (!msg)
8252                 return -1;
8253
8254         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
8255
8256         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8257         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
8258
8259         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8260         msg = NULL;
8261         if (ret == 0)
8262                 return 0;
8263         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
8264                    "%d (%s)", ret, strerror(-ret));
8265 nla_put_failure:
8266         nlmsg_free(msg);
8267         return -1;
8268 }
8269
8270
8271 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
8272 {
8273         struct i802_bss *bss = priv;
8274         struct wpa_driver_nl80211_data *drv = bss->drv;
8275
8276         if (!report) {
8277                 if (bss->nl_preq && drv->device_ap_sme &&
8278                     is_ap_interface(drv->nlmode)) {
8279                         /*
8280                          * Do not disable Probe Request reporting that was
8281                          * enabled in nl80211_setup_ap().
8282                          */
8283                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
8284                                    "Probe Request reporting nl_preq=%p while "
8285                                    "in AP mode", bss->nl_preq);
8286                 } else if (bss->nl_preq) {
8287                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
8288                                    "reporting nl_preq=%p", bss->nl_preq);
8289                         eloop_unregister_read_sock(
8290                                 nl_socket_get_fd(bss->nl_preq));
8291                         nl_destroy_handles(&bss->nl_preq);
8292                 }
8293                 return 0;
8294         }
8295
8296         if (bss->nl_preq) {
8297                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
8298                            "already on! nl_preq=%p", bss->nl_preq);
8299                 return 0;
8300         }
8301
8302         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
8303         if (bss->nl_preq == NULL)
8304                 return -1;
8305         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
8306                    "reporting nl_preq=%p", bss->nl_preq);
8307
8308         if (nl80211_register_frame(bss, bss->nl_preq,
8309                                    (WLAN_FC_TYPE_MGMT << 2) |
8310                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
8311                                    NULL, 0) < 0)
8312                 goto out_err;
8313
8314         eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq),
8315                                  wpa_driver_nl80211_event_receive, bss->nl_cb,
8316                                  bss->nl_preq);
8317
8318         return 0;
8319
8320  out_err:
8321         nl_destroy_handles(&bss->nl_preq);
8322         return -1;
8323 }
8324
8325
8326 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
8327                                      int ifindex, int disabled)
8328 {
8329         struct nl_msg *msg;
8330         struct nlattr *bands, *band;
8331         int ret;
8332
8333         msg = nlmsg_alloc();
8334         if (!msg)
8335                 return -1;
8336
8337         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
8338         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
8339
8340         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
8341         if (!bands)
8342                 goto nla_put_failure;
8343
8344         /*
8345          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
8346          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
8347          * rates. All 5 GHz rates are left enabled.
8348          */
8349         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
8350         if (!band)
8351                 goto nla_put_failure;
8352         if (disabled) {
8353                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
8354                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
8355         }
8356         nla_nest_end(msg, band);
8357
8358         nla_nest_end(msg, bands);
8359
8360         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8361         msg = NULL;
8362         if (ret) {
8363                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
8364                            "(%s)", ret, strerror(-ret));
8365         }
8366
8367         return ret;
8368
8369 nla_put_failure:
8370         nlmsg_free(msg);
8371         return -1;
8372 }
8373
8374
8375 static int wpa_driver_nl80211_deinit_ap(void *priv)
8376 {
8377         struct i802_bss *bss = priv;
8378         struct wpa_driver_nl80211_data *drv = bss->drv;
8379         if (!is_ap_interface(drv->nlmode))
8380                 return -1;
8381         wpa_driver_nl80211_del_beacon(drv);
8382         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
8383 }
8384
8385
8386 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
8387 {
8388         struct i802_bss *bss = priv;
8389         struct wpa_driver_nl80211_data *drv = bss->drv;
8390         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
8391                 return -1;
8392         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
8393 }
8394
8395
8396 static void wpa_driver_nl80211_resume(void *priv)
8397 {
8398         struct i802_bss *bss = priv;
8399         struct wpa_driver_nl80211_data *drv = bss->drv;
8400         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
8401                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
8402                            "resume event");
8403         }
8404 }
8405
8406
8407 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
8408                                   const u8 *ies, size_t ies_len)
8409 {
8410         struct i802_bss *bss = priv;
8411         struct wpa_driver_nl80211_data *drv = bss->drv;
8412         int ret;
8413         u8 *data, *pos;
8414         size_t data_len;
8415         const u8 *own_addr = bss->addr;
8416
8417         if (action != 1) {
8418                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
8419                            "action %d", action);
8420                 return -1;
8421         }
8422
8423         /*
8424          * Action frame payload:
8425          * Category[1] = 6 (Fast BSS Transition)
8426          * Action[1] = 1 (Fast BSS Transition Request)
8427          * STA Address
8428          * Target AP Address
8429          * FT IEs
8430          */
8431
8432         data_len = 2 + 2 * ETH_ALEN + ies_len;
8433         data = os_malloc(data_len);
8434         if (data == NULL)
8435                 return -1;
8436         pos = data;
8437         *pos++ = 0x06; /* FT Action category */
8438         *pos++ = action;
8439         os_memcpy(pos, own_addr, ETH_ALEN);
8440         pos += ETH_ALEN;
8441         os_memcpy(pos, target_ap, ETH_ALEN);
8442         pos += ETH_ALEN;
8443         os_memcpy(pos, ies, ies_len);
8444
8445         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
8446                                              drv->bssid, own_addr, drv->bssid,
8447                                              data, data_len, 0);
8448         os_free(data);
8449
8450         return ret;
8451 }
8452
8453
8454 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
8455 {
8456         struct i802_bss *bss = priv;
8457         struct wpa_driver_nl80211_data *drv = bss->drv;
8458         struct nl_msg *msg, *cqm = NULL;
8459         int ret = -1;
8460
8461         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
8462                    "hysteresis=%d", threshold, hysteresis);
8463
8464         msg = nlmsg_alloc();
8465         if (!msg)
8466                 return -1;
8467
8468         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
8469
8470         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8471
8472         cqm = nlmsg_alloc();
8473         if (cqm == NULL)
8474                 goto nla_put_failure;
8475
8476         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
8477         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
8478         if (nla_put_nested(msg, NL80211_ATTR_CQM, cqm) < 0)
8479                 goto nla_put_failure;
8480
8481         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8482         msg = NULL;
8483
8484 nla_put_failure:
8485         nlmsg_free(cqm);
8486         nlmsg_free(msg);
8487         return ret;
8488 }
8489
8490
8491 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
8492 {
8493         struct i802_bss *bss = priv;
8494         struct wpa_driver_nl80211_data *drv = bss->drv;
8495         int res;
8496
8497         os_memset(si, 0, sizeof(*si));
8498         res = nl80211_get_link_signal(drv, si);
8499         if (res != 0)
8500                 return res;
8501
8502         return nl80211_get_link_noise(drv, si);
8503 }
8504
8505
8506 static int wpa_driver_nl80211_shared_freq(void *priv)
8507 {
8508         struct i802_bss *bss = priv;
8509         struct wpa_driver_nl80211_data *drv = bss->drv;
8510         struct wpa_driver_nl80211_data *driver;
8511         int freq = 0;
8512
8513         /*
8514          * If the same PHY is in connected state with some other interface,
8515          * then retrieve the assoc freq.
8516          */
8517         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
8518                    drv->phyname);
8519
8520         dl_list_for_each(driver, &drv->global->interfaces,
8521                          struct wpa_driver_nl80211_data, list) {
8522                 if (drv == driver ||
8523                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
8524                     !driver->associated)
8525                         continue;
8526
8527                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
8528                            MACSTR,
8529                            driver->phyname, driver->first_bss.ifname,
8530                            MAC2STR(driver->first_bss.addr));
8531                 if (is_ap_interface(driver->nlmode))
8532                         freq = driver->first_bss.freq;
8533                 else
8534                         freq = nl80211_get_assoc_freq(driver);
8535                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
8536                            drv->phyname, freq);
8537         }
8538
8539         if (!freq)
8540                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
8541                            "PHY (%s) in associated state", drv->phyname);
8542
8543         return freq;
8544 }
8545
8546
8547 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
8548                               int encrypt)
8549 {
8550         struct i802_bss *bss = priv;
8551         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
8552                                              0, 0, 0, 0);
8553 }
8554
8555
8556 static int nl80211_set_param(void *priv, const char *param)
8557 {
8558         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
8559         if (param == NULL)
8560                 return 0;
8561
8562 #ifdef CONFIG_P2P
8563         if (os_strstr(param, "use_p2p_group_interface=1")) {
8564                 struct i802_bss *bss = priv;
8565                 struct wpa_driver_nl80211_data *drv = bss->drv;
8566
8567                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
8568                            "interface");
8569                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
8570                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
8571         }
8572 #endif /* CONFIG_P2P */
8573
8574         return 0;
8575 }
8576
8577
8578 static void * nl80211_global_init(void)
8579 {
8580         struct nl80211_global *global;
8581         struct netlink_config *cfg;
8582
8583         global = os_zalloc(sizeof(*global));
8584         if (global == NULL)
8585                 return NULL;
8586         global->ioctl_sock = -1;
8587         dl_list_init(&global->interfaces);
8588         global->if_add_ifindex = -1;
8589
8590         cfg = os_zalloc(sizeof(*cfg));
8591         if (cfg == NULL)
8592                 goto err;
8593
8594         cfg->ctx = global;
8595         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
8596         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
8597         global->netlink = netlink_init(cfg);
8598         if (global->netlink == NULL) {
8599                 os_free(cfg);
8600                 goto err;
8601         }
8602
8603         if (wpa_driver_nl80211_init_nl_global(global) < 0)
8604                 goto err;
8605
8606         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
8607         if (global->ioctl_sock < 0) {
8608                 perror("socket(PF_INET,SOCK_DGRAM)");
8609                 goto err;
8610         }
8611
8612         return global;
8613
8614 err:
8615         nl80211_global_deinit(global);
8616         return NULL;
8617 }
8618
8619
8620 static void nl80211_global_deinit(void *priv)
8621 {
8622         struct nl80211_global *global = priv;
8623         if (global == NULL)
8624                 return;
8625         if (!dl_list_empty(&global->interfaces)) {
8626                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
8627                            "nl80211_global_deinit",
8628                            dl_list_len(&global->interfaces));
8629         }
8630
8631         if (global->netlink)
8632                 netlink_deinit(global->netlink);
8633
8634         nl_destroy_handles(&global->nl);
8635
8636         if (global->nl_event) {
8637                 eloop_unregister_read_sock(
8638                         nl_socket_get_fd(global->nl_event));
8639                 nl_destroy_handles(&global->nl_event);
8640         }
8641
8642         nl_cb_put(global->nl_cb);
8643
8644         if (global->ioctl_sock >= 0)
8645                 close(global->ioctl_sock);
8646
8647         os_free(global);
8648 }
8649
8650
8651 static const char * nl80211_get_radio_name(void *priv)
8652 {
8653         struct i802_bss *bss = priv;
8654         struct wpa_driver_nl80211_data *drv = bss->drv;
8655         return drv->phyname;
8656 }
8657
8658
8659 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
8660                          const u8 *pmkid)
8661 {
8662         struct nl_msg *msg;
8663
8664         msg = nlmsg_alloc();
8665         if (!msg)
8666                 return -ENOMEM;
8667
8668         nl80211_cmd(bss->drv, msg, 0, cmd);
8669
8670         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
8671         if (pmkid)
8672                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
8673         if (bssid)
8674                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
8675
8676         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8677  nla_put_failure:
8678         nlmsg_free(msg);
8679         return -ENOBUFS;
8680 }
8681
8682
8683 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8684 {
8685         struct i802_bss *bss = priv;
8686         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
8687         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
8688 }
8689
8690
8691 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8692 {
8693         struct i802_bss *bss = priv;
8694         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
8695                    MAC2STR(bssid));
8696         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
8697 }
8698
8699
8700 static int nl80211_flush_pmkid(void *priv)
8701 {
8702         struct i802_bss *bss = priv;
8703         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
8704         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
8705 }
8706
8707
8708 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
8709                                    const u8 *replay_ctr)
8710 {
8711         struct i802_bss *bss = priv;
8712         struct wpa_driver_nl80211_data *drv = bss->drv;
8713         struct nlattr *replay_nested;
8714         struct nl_msg *msg;
8715
8716         msg = nlmsg_alloc();
8717         if (!msg)
8718                 return;
8719
8720         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8721
8722         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8723
8724         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8725         if (!replay_nested)
8726                 goto nla_put_failure;
8727
8728         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
8729         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
8730         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
8731                 replay_ctr);
8732
8733         nla_nest_end(msg, replay_nested);
8734
8735         send_and_recv_msgs(drv, msg, NULL, NULL);
8736         return;
8737  nla_put_failure:
8738         nlmsg_free(msg);
8739 }
8740
8741
8742 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
8743                                     const u8 *addr, int qos)
8744 {
8745         /* send data frame to poll STA and check whether
8746          * this frame is ACKed */
8747         struct {
8748                 struct ieee80211_hdr hdr;
8749                 u16 qos_ctl;
8750         } STRUCT_PACKED nulldata;
8751         size_t size;
8752
8753         /* Send data frame to poll STA and check whether this frame is ACKed */
8754
8755         os_memset(&nulldata, 0, sizeof(nulldata));
8756
8757         if (qos) {
8758                 nulldata.hdr.frame_control =
8759                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
8760                                      WLAN_FC_STYPE_QOS_NULL);
8761                 size = sizeof(nulldata);
8762         } else {
8763                 nulldata.hdr.frame_control =
8764                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
8765                                      WLAN_FC_STYPE_NULLFUNC);
8766                 size = sizeof(struct ieee80211_hdr);
8767         }
8768
8769         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
8770         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
8771         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
8772         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
8773
8774         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0)
8775                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
8776                            "send poll frame");
8777 }
8778
8779 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
8780                                 int qos)
8781 {
8782         struct i802_bss *bss = priv;
8783         struct wpa_driver_nl80211_data *drv = bss->drv;
8784         struct nl_msg *msg;
8785
8786         if (!drv->poll_command_supported) {
8787                 nl80211_send_null_frame(bss, own_addr, addr, qos);
8788                 return;
8789         }
8790
8791         msg = nlmsg_alloc();
8792         if (!msg)
8793                 return;
8794
8795         nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
8796
8797         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8798         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8799
8800         send_and_recv_msgs(drv, msg, NULL, NULL);
8801         return;
8802  nla_put_failure:
8803         nlmsg_free(msg);
8804 }
8805
8806
8807 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
8808 {
8809         struct nl_msg *msg;
8810
8811         msg = nlmsg_alloc();
8812         if (!msg)
8813                 return -ENOMEM;
8814
8815         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
8816         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8817         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
8818                     enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
8819         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8820 nla_put_failure:
8821         nlmsg_free(msg);
8822         return -ENOBUFS;
8823 }
8824
8825
8826 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
8827                                      int ctwindow)
8828 {
8829         struct i802_bss *bss = priv;
8830
8831         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
8832                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
8833
8834         if (opp_ps != -1 || ctwindow != -1)
8835                 return -1; /* Not yet supported */
8836
8837         if (legacy_ps == -1)
8838                 return 0;
8839         if (legacy_ps != 0 && legacy_ps != 1)
8840                 return -1; /* Not yet supported */
8841
8842         return nl80211_set_power_save(bss, legacy_ps);
8843 }
8844
8845
8846 #ifdef CONFIG_TDLS
8847
8848 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
8849                                   u8 dialog_token, u16 status_code,
8850                                   const u8 *buf, size_t len)
8851 {
8852         struct i802_bss *bss = priv;
8853         struct wpa_driver_nl80211_data *drv = bss->drv;
8854         struct nl_msg *msg;
8855
8856         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8857                 return -EOPNOTSUPP;
8858
8859         if (!dst)
8860                 return -EINVAL;
8861
8862         msg = nlmsg_alloc();
8863         if (!msg)
8864                 return -ENOMEM;
8865
8866         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
8867         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8868         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
8869         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
8870         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
8871         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
8872         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
8873
8874         return send_and_recv_msgs(drv, msg, NULL, NULL);
8875
8876 nla_put_failure:
8877         nlmsg_free(msg);
8878         return -ENOBUFS;
8879 }
8880
8881
8882 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
8883 {
8884         struct i802_bss *bss = priv;
8885         struct wpa_driver_nl80211_data *drv = bss->drv;
8886         struct nl_msg *msg;
8887         enum nl80211_tdls_operation nl80211_oper;
8888
8889         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8890                 return -EOPNOTSUPP;
8891
8892         switch (oper) {
8893         case TDLS_DISCOVERY_REQ:
8894                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
8895                 break;
8896         case TDLS_SETUP:
8897                 nl80211_oper = NL80211_TDLS_SETUP;
8898                 break;
8899         case TDLS_TEARDOWN:
8900                 nl80211_oper = NL80211_TDLS_TEARDOWN;
8901                 break;
8902         case TDLS_ENABLE_LINK:
8903                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8904                 break;
8905         case TDLS_DISABLE_LINK:
8906                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8907                 break;
8908         case TDLS_ENABLE:
8909                 return 0;
8910         case TDLS_DISABLE:
8911                 return 0;
8912         default:
8913                 return -EINVAL;
8914         }
8915
8916         msg = nlmsg_alloc();
8917         if (!msg)
8918                 return -ENOMEM;
8919
8920         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8921         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8922         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8923         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8924
8925         return send_and_recv_msgs(drv, msg, NULL, NULL);
8926
8927 nla_put_failure:
8928         nlmsg_free(msg);
8929         return -ENOBUFS;
8930 }
8931
8932 #endif /* CONFIG TDLS */
8933
8934
8935 #ifdef ANDROID
8936
8937 typedef struct android_wifi_priv_cmd {
8938         char *buf;
8939         int used_len;
8940         int total_len;
8941 } android_wifi_priv_cmd;
8942
8943 static int drv_errors = 0;
8944
8945 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
8946 {
8947         drv_errors++;
8948         if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
8949                 drv_errors = 0;
8950                 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
8951         }
8952 }
8953
8954
8955 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
8956 {
8957         struct wpa_driver_nl80211_data *drv = bss->drv;
8958         struct ifreq ifr;
8959         android_wifi_priv_cmd priv_cmd;
8960         char buf[MAX_DRV_CMD_SIZE];
8961         int ret;
8962
8963         os_memset(&ifr, 0, sizeof(ifr));
8964         os_memset(&priv_cmd, 0, sizeof(priv_cmd));
8965         os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
8966
8967         os_memset(buf, 0, sizeof(buf));
8968         os_strlcpy(buf, cmd, sizeof(buf));
8969
8970         priv_cmd.buf = buf;
8971         priv_cmd.used_len = sizeof(buf);
8972         priv_cmd.total_len = sizeof(buf);
8973         ifr.ifr_data = &priv_cmd;
8974
8975         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
8976         if (ret < 0) {
8977                 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
8978                            __func__);
8979                 wpa_driver_send_hang_msg(drv);
8980                 return ret;
8981         }
8982
8983         drv_errors = 0;
8984         return 0;
8985 }
8986
8987
8988 static int android_pno_start(struct i802_bss *bss,
8989                              struct wpa_driver_scan_params *params)
8990 {
8991         struct wpa_driver_nl80211_data *drv = bss->drv;
8992         struct ifreq ifr;
8993         android_wifi_priv_cmd priv_cmd;
8994         int ret = 0, i = 0, bp;
8995         char buf[WEXT_PNO_MAX_COMMAND_SIZE];
8996
8997         bp = WEXT_PNOSETUP_HEADER_SIZE;
8998         os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
8999         buf[bp++] = WEXT_PNO_TLV_PREFIX;
9000         buf[bp++] = WEXT_PNO_TLV_VERSION;
9001         buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
9002         buf[bp++] = WEXT_PNO_TLV_RESERVED;
9003
9004         while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
9005                 /* Check that there is enough space needed for 1 more SSID, the
9006                  * other sections and null termination */
9007                 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
9008                      WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
9009                         break;
9010                 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
9011                                   params->ssids[i].ssid,
9012                                   params->ssids[i].ssid_len);
9013                 buf[bp++] = WEXT_PNO_SSID_SECTION;
9014                 buf[bp++] = params->ssids[i].ssid_len;
9015                 os_memcpy(&buf[bp], params->ssids[i].ssid,
9016                           params->ssids[i].ssid_len);
9017                 bp += params->ssids[i].ssid_len;
9018                 i++;
9019         }
9020
9021         buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
9022         os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
9023                     WEXT_PNO_SCAN_INTERVAL);
9024         bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
9025
9026         buf[bp++] = WEXT_PNO_REPEAT_SECTION;
9027         os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
9028                     WEXT_PNO_REPEAT);
9029         bp += WEXT_PNO_REPEAT_LENGTH;
9030
9031         buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
9032         os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
9033                     WEXT_PNO_MAX_REPEAT);
9034         bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
9035
9036         memset(&ifr, 0, sizeof(ifr));
9037         memset(&priv_cmd, 0, sizeof(priv_cmd));
9038         os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
9039
9040         priv_cmd.buf = buf;
9041         priv_cmd.used_len = bp;
9042         priv_cmd.total_len = bp;
9043         ifr.ifr_data = &priv_cmd;
9044
9045         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
9046
9047         if (ret < 0) {
9048                 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
9049                            ret);
9050                 wpa_driver_send_hang_msg(drv);
9051                 return ret;
9052         }
9053
9054         drv_errors = 0;
9055
9056         return android_priv_cmd(bss, "PNOFORCE 1");
9057 }
9058
9059
9060 static int android_pno_stop(struct i802_bss *bss)
9061 {
9062         return android_priv_cmd(bss, "PNOFORCE 0");
9063 }
9064
9065 #endif /* ANDROID */
9066
9067
9068 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9069         .name = "nl80211",
9070         .desc = "Linux nl80211/cfg80211",
9071         .get_bssid = wpa_driver_nl80211_get_bssid,
9072         .get_ssid = wpa_driver_nl80211_get_ssid,
9073         .set_key = wpa_driver_nl80211_set_key,
9074         .scan2 = wpa_driver_nl80211_scan,
9075         .sched_scan = wpa_driver_nl80211_sched_scan,
9076         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9077         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9078         .deauthenticate = wpa_driver_nl80211_deauthenticate,
9079         .disassociate = wpa_driver_nl80211_disassociate,
9080         .authenticate = wpa_driver_nl80211_authenticate,
9081         .associate = wpa_driver_nl80211_associate,
9082         .global_init = nl80211_global_init,
9083         .global_deinit = nl80211_global_deinit,
9084         .init2 = wpa_driver_nl80211_init,
9085         .deinit = wpa_driver_nl80211_deinit,
9086         .get_capa = wpa_driver_nl80211_get_capa,
9087         .set_operstate = wpa_driver_nl80211_set_operstate,
9088         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9089         .set_country = wpa_driver_nl80211_set_country,
9090         .set_ap = wpa_driver_nl80211_set_ap,
9091         .if_add = wpa_driver_nl80211_if_add,
9092         .if_remove = wpa_driver_nl80211_if_remove,
9093         .send_mlme = wpa_driver_nl80211_send_mlme,
9094         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
9095         .sta_add = wpa_driver_nl80211_sta_add,
9096         .sta_remove = wpa_driver_nl80211_sta_remove,
9097         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9098         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9099 #ifdef HOSTAPD
9100         .hapd_init = i802_init,
9101         .hapd_deinit = i802_deinit,
9102         .set_wds_sta = i802_set_wds_sta,
9103 #endif /* HOSTAPD */
9104 #if defined(HOSTAPD) || defined(CONFIG_AP)
9105         .get_seqnum = i802_get_seqnum,
9106         .flush = i802_flush,
9107         .read_sta_data = i802_read_sta_data,
9108         .get_inact_sec = i802_get_inact_sec,
9109         .sta_clear_stats = i802_sta_clear_stats,
9110         .set_rts = i802_set_rts,
9111         .set_frag = i802_set_frag,
9112         .set_tx_queue_params = i802_set_tx_queue_params,
9113         .set_sta_vlan = i802_set_sta_vlan,
9114         .sta_deauth = i802_sta_deauth,
9115         .sta_disassoc = i802_sta_disassoc,
9116 #endif /* HOSTAPD || CONFIG_AP */
9117         .set_freq = i802_set_freq,
9118         .send_action = wpa_driver_nl80211_send_action,
9119         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9120         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9121         .cancel_remain_on_channel =
9122         wpa_driver_nl80211_cancel_remain_on_channel,
9123         .probe_req_report = wpa_driver_nl80211_probe_req_report,
9124         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9125         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9126         .resume = wpa_driver_nl80211_resume,
9127         .send_ft_action = nl80211_send_ft_action,
9128         .signal_monitor = nl80211_signal_monitor,
9129         .signal_poll = nl80211_signal_poll,
9130         .send_frame = nl80211_send_frame,
9131         .shared_freq = wpa_driver_nl80211_shared_freq,
9132         .set_param = nl80211_set_param,
9133         .get_radio_name = nl80211_get_radio_name,
9134         .add_pmkid = nl80211_add_pmkid,
9135         .remove_pmkid = nl80211_remove_pmkid,
9136         .flush_pmkid = nl80211_flush_pmkid,
9137         .set_rekey_info = nl80211_set_rekey_info,
9138         .poll_client = nl80211_poll_client,
9139         .set_p2p_powersave = nl80211_set_p2p_powersave,
9140 #ifdef CONFIG_TDLS
9141         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9142         .tdls_oper = nl80211_tdls_oper,
9143 #endif /* CONFIG_TDLS */
9144 };