src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2014, 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/types.h>
  15 #include <fcntl.h>
  16 #include <net/if.h>
  17 #include <netlink/genl/genl.h>
  18 #include <netlink/genl/ctrl.h>
  19 #ifdef CONFIG_LIBNL3_ROUTE
  20 #include <netlink/route/neighbour.h>
  21 #endif /* CONFIG_LIBNL3_ROUTE */
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/errqueue.h>
  25
  26 #include "common.h"
  27 #include "eloop.h"
  28 #include "common/qca-vendor.h"
  29 #include "common/qca-vendor-attr.h"
  30 #include "common/ieee802_11_defs.h"
  31 #include "common/ieee802_11_common.h"
  32 #include "l2_packet/l2_packet.h"
  33 #include "netlink.h"
  34 #include "linux_defines.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver_nl80211.h"
  40
  41
  42 #ifndef CONFIG_LIBNL20
  43 /*
  44  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  45  * but when you free a socket again it will mess up its bitmap and
  46  * and use the wrong number the next time it needs a socket ID.
  47  * Therefore, we wrap the handle alloc/destroy and add our own pid
  48  * accounting.
  49  */
  50 static uint32_t port_bitmap[32] = { 0 };
  51
  52 static struct nl_handle *nl80211_handle_alloc(void *cb)
  53 {
  54         struct nl_handle *handle;
  55         uint32_t pid = getpid() & 0x3FFFFF;
  56         int i;
  57
  58         handle = nl_handle_alloc_cb(cb);
  59
  60         for (i = 0; i < 1024; i++) {
  61                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  62                         continue;
  63                 port_bitmap[i / 32] |= 1 << (i % 32);
  64                 pid += i << 22;
  65                 break;
  66         }
  67
  68         nl_socket_set_local_port(handle, pid);
  69
  70         return handle;
  71 }
  72
  73 static void nl80211_handle_destroy(struct nl_handle *handle)
  74 {
  75         uint32_t port = nl_socket_get_local_port(handle);
  76
  77         port >>= 22;
  78         port_bitmap[port / 32] &= ~(1 << (port % 32));
  79
  80         nl_handle_destroy(handle);
  81 }
  82 #endif /* CONFIG_LIBNL20 */
  83
  84
  85 #ifdef ANDROID
  86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
  87 #undef nl_socket_set_nonblocking
  88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
  89
  90 #define genl_ctrl_resolve android_genl_ctrl_resolve
  91 #endif /* ANDROID */
  92
  93
  94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  95 {
  96         struct nl_handle *handle;
  97
  98         handle = nl80211_handle_alloc(cb);
  99         if (handle == NULL) {
 100                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 101                            "callbacks (%s)", dbg);
 102                 return NULL;
 103         }
 104
 105         if (genl_connect(handle)) {
 106                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 107                            "netlink (%s)", dbg);
 108                 nl80211_handle_destroy(handle);
 109                 return NULL;
 110         }
 111
 112         return handle;
 113 }
 114
 115
 116 static void nl_destroy_handles(struct nl_handle **handle)
 117 {
 118         if (*handle == NULL)
 119                 return;
 120         nl80211_handle_destroy(*handle);
 121         *handle = NULL;
 122 }
 123
 124
 125 #if __WORDSIZE == 64
 126 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 127 #else
 128 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 129 #endif
 130
 131 static void nl80211_register_eloop_read(struct nl_handle **handle,
 132                                         eloop_sock_handler handler,
 133                                         void *eloop_data)
 134 {
 135         nl_socket_set_nonblocking(*handle);
 136         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 137                                  eloop_data, *handle);
 138         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 139 }
 140
 141
 142 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 143 {
 144         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 145         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 146         nl_destroy_handles(handle);
 147 }
 148
 149
 150 static void nl80211_global_deinit(void *priv);
 151
 152 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 153 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 154                                             struct hostapd_freq_params *freq);
 155
 156 static int
 157 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 158                                    const u8 *set_addr, int first,
 159                                    const char *driver_params);
 160 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 161                                    const u8 *addr, int cmd, u16 reason_code,
 162                                    int local_state_change);
 163 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 164                                   unsigned int freq, unsigned int wait,
 165                                   const u8 *buf, size_t buf_len, u64 *cookie,
 166                                   int no_cck, int no_ack, int offchanok);
 167 static int nl80211_register_frame(struct i802_bss *bss,
 168                                   struct nl_handle *hl_handle,
 169                                   u16 type, const u8 *match, size_t match_len);
 170 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 171                                                int report);
 172
 173 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 174 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 175 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 176 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
 177                                         enum wpa_driver_if_type type,
 178                                         const char *ifname);
 179
 180 static int nl80211_set_channel(struct i802_bss *bss,
 181                                struct hostapd_freq_params *freq, int set_chan);
 182 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 183                                      int ifindex, int disabled);
 184
 185 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
 186
 187 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 188 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 189 static int nl80211_set_param(void *priv, const char *param);
 190
 191
 192 /* Converts nl80211_chan_width to a common format */
 193 enum chan_width convert2width(int width)
 194 {
 195         switch (width) {
 196         case NL80211_CHAN_WIDTH_20_NOHT:
 197                 return CHAN_WIDTH_20_NOHT;
 198         case NL80211_CHAN_WIDTH_20:
 199                 return CHAN_WIDTH_20;
 200         case NL80211_CHAN_WIDTH_40:
 201                 return CHAN_WIDTH_40;
 202         case NL80211_CHAN_WIDTH_80:
 203                 return CHAN_WIDTH_80;
 204         case NL80211_CHAN_WIDTH_80P80:
 205                 return CHAN_WIDTH_80P80;
 206         case NL80211_CHAN_WIDTH_160:
 207                 return CHAN_WIDTH_160;
 208         }
 209         return CHAN_WIDTH_UNKNOWN;
 210 }
 211
 212
 213 int is_ap_interface(enum nl80211_iftype nlmode)
 214 {
 215         return nlmode == NL80211_IFTYPE_AP ||
 216                 nlmode == NL80211_IFTYPE_P2P_GO;
 217 }
 218
 219
 220 static int is_sta_interface(enum nl80211_iftype nlmode)
 221 {
 222         return nlmode == NL80211_IFTYPE_STATION ||
 223                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 224 }
 225
 226
 227 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 228 {
 229         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 230                 nlmode == NL80211_IFTYPE_P2P_GO;
 231 }
 232
 233
 234 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 235                                   int ifindex)
 236 {
 237         struct i802_bss *bss;
 238
 239         for (bss = drv->first_bss; bss; bss = bss->next) {
 240                 if (bss->ifindex == ifindex)
 241                         return bss;
 242         }
 243
 244         return NULL;
 245 }
 246
 247
 248 static int is_mesh_interface(enum nl80211_iftype nlmode)
 249 {
 250         return nlmode == NL80211_IFTYPE_MESH_POINT;
 251 }
 252
 253
 254 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 255 {
 256         if (drv->associated)
 257                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 258         drv->associated = 0;
 259         os_memset(drv->bssid, 0, ETH_ALEN);
 260 }
 261
 262
 263 struct nl80211_bss_info_arg {
 264         struct wpa_driver_nl80211_data *drv;
 265         struct wpa_scan_results *res;
 266         unsigned int assoc_freq;
 267         unsigned int ibss_freq;
 268         u8 assoc_bssid[ETH_ALEN];
 269 };
 270
 271 static int bss_info_handler(struct nl_msg *msg, void *arg);
 272
 273
 274 /* nl80211 code */
 275 static int ack_handler(struct nl_msg *msg, void *arg)
 276 {
 277         int *err = arg;
 278         *err = 0;
 279         return NL_STOP;
 280 }
 281
 282 static int finish_handler(struct nl_msg *msg, void *arg)
 283 {
 284         int *ret = arg;
 285         *ret = 0;
 286         return NL_SKIP;
 287 }
 288
 289 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 290                          void *arg)
 291 {
 292         int *ret = arg;
 293         *ret = err->error;
 294         return NL_SKIP;
 295 }
 296
 297
 298 static int no_seq_check(struct nl_msg *msg, void *arg)
 299 {
 300         return NL_OK;
 301 }
 302
 303
 304 static int send_and_recv(struct nl80211_global *global,
 305                          struct nl_handle *nl_handle, struct nl_msg *msg,
 306                          int (*valid_handler)(struct nl_msg *, void *),
 307                          void *valid_data)
 308 {
 309         struct nl_cb *cb;
 310         int err = -ENOMEM;
 311
 312         if (!msg)
 313                 return -ENOMEM;
 314
 315         cb = nl_cb_clone(global->nl_cb);
 316         if (!cb)
 317                 goto out;
 318
 319         err = nl_send_auto_complete(nl_handle, msg);
 320         if (err < 0)
 321                 goto out;
 322
 323         err = 1;
 324
 325         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 326         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 327         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 328
 329         if (valid_handler)
 330                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 331                           valid_handler, valid_data);
 332
 333         while (err > 0) {
 334                 int res = nl_recvmsgs(nl_handle, cb);
 335                 if (res < 0) {
 336                         wpa_printf(MSG_INFO,
 337                                    "nl80211: %s->nl_recvmsgs failed: %d",
 338                                    __func__, res);
 339                 }
 340         }
 341  out:
 342         nl_cb_put(cb);
 343         nlmsg_free(msg);
 344         return err;
 345 }
 346
 347
 348 static int send_and_recv_msgs_global(struct nl80211_global *global,
 349                                      struct nl_msg *msg,
 350                                      int (*valid_handler)(struct nl_msg *, void *),
 351                                      void *valid_data)
 352 {
 353         return send_and_recv(global, global->nl, msg, valid_handler,
 354                              valid_data);
 355 }
 356
 357
 358 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 359                        struct nl_msg *msg,
 360                        int (*valid_handler)(struct nl_msg *, void *),
 361                        void *valid_data)
 362 {
 363         return send_and_recv(drv->global, drv->global->nl, msg,
 364                              valid_handler, valid_data);
 365 }
 366
 367
 368 struct family_data {
 369         const char *group;
 370         int id;
 371 };
 372
 373
 374 static int family_handler(struct nl_msg *msg, void *arg)
 375 {
 376         struct family_data *res = arg;
 377         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 378         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 379         struct nlattr *mcgrp;
 380         int i;
 381
 382         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 383                   genlmsg_attrlen(gnlh, 0), NULL);
 384         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 385                 return NL_SKIP;
 386
 387         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 388                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 389                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 390                           nla_len(mcgrp), NULL);
 391                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 392                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 393                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 394                                res->group,
 395                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 396                         continue;
 397                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 398                 break;
 399         };
 400
 401         return NL_SKIP;
 402 }
 403
 404
 405 static int nl_get_multicast_id(struct nl80211_global *global,
 406                                const char *family, const char *group)
 407 {
 408         struct nl_msg *msg;
 409         int ret;
 410         struct family_data res = { group, -ENOENT };
 411
 412         msg = nlmsg_alloc();
 413         if (!msg)
 414                 return -ENOMEM;
 415         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 416                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 417             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 418                 nlmsg_free(msg);
 419                 return -1;
 420         }
 421
 422         ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
 423         if (ret == 0)
 424                 ret = res.id;
 425         return ret;
 426 }
 427
 428
 429 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 430                    struct nl_msg *msg, int flags, uint8_t cmd)
 431 {
 432         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 433                            0, flags, cmd, 0);
 434 }
 435
 436
 437 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 438 {
 439         if (bss->wdev_id_set)
 440                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 441         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 442 }
 443
 444
 445 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 446 {
 447         struct nl_msg *msg;
 448
 449         msg = nlmsg_alloc();
 450         if (!msg)
 451                 return NULL;
 452
 453         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 454             nl80211_set_iface_id(msg, bss) < 0) {
 455                 nlmsg_free(msg);
 456                 return NULL;
 457         }
 458
 459         return msg;
 460 }
 461
 462
 463 static struct nl_msg *
 464 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 465                     int flags, uint8_t cmd)
 466 {
 467         struct nl_msg *msg;
 468
 469         msg = nlmsg_alloc();
 470         if (!msg)
 471                 return NULL;
 472
 473         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 474             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 475                 nlmsg_free(msg);
 476                 return NULL;
 477         }
 478
 479         return msg;
 480 }
 481
 482
 483 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 484                                 uint8_t cmd)
 485 {
 486         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 487 }
 488
 489
 490 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 491 {
 492         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 493 }
 494
 495
 496 struct wiphy_idx_data {
 497         int wiphy_idx;
 498         enum nl80211_iftype nlmode;
 499         u8 *macaddr;
 500 };
 501
 502
 503 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 504 {
 505         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 506         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 507         struct wiphy_idx_data *info = arg;
 508
 509         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 510                   genlmsg_attrlen(gnlh, 0), NULL);
 511
 512         if (tb[NL80211_ATTR_WIPHY])
 513                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 514
 515         if (tb[NL80211_ATTR_IFTYPE])
 516                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 517
 518         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 519                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 520                           ETH_ALEN);
 521
 522         return NL_SKIP;
 523 }
 524
 525
 526 int nl80211_get_wiphy_index(struct i802_bss *bss)
 527 {
 528         struct nl_msg *msg;
 529         struct wiphy_idx_data data = {
 530                 .wiphy_idx = -1,
 531                 .macaddr = NULL,
 532         };
 533
 534         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 535                 return -1;
 536
 537         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 538                 return data.wiphy_idx;
 539         return -1;
 540 }
 541
 542
 543 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 544 {
 545         struct nl_msg *msg;
 546         struct wiphy_idx_data data = {
 547                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 548                 .macaddr = NULL,
 549         };
 550
 551         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 552                 return NL80211_IFTYPE_UNSPECIFIED;
 553
 554         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 555                 return data.nlmode;
 556         return NL80211_IFTYPE_UNSPECIFIED;
 557 }
 558
 559
 560 static int nl80211_get_macaddr(struct i802_bss *bss)
 561 {
 562         struct nl_msg *msg;
 563         struct wiphy_idx_data data = {
 564                 .macaddr = bss->addr,
 565         };
 566
 567         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 568                 return -1;
 569
 570         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 571 }
 572
 573
 574 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 575                                     struct nl80211_wiphy_data *w)
 576 {
 577         struct nl_msg *msg;
 578         int ret;
 579
 580         msg = nlmsg_alloc();
 581         if (!msg)
 582                 return -1;
 583
 584         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 585             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 586                 nlmsg_free(msg);
 587                 return -1;
 588         }
 589
 590         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 591         if (ret) {
 592                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 593                            "failed: ret=%d (%s)",
 594                            ret, strerror(-ret));
 595         }
 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         int res;
 604
 605         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 606
 607         res = nl_recvmsgs(handle, w->nl_cb);
 608         if (res < 0) {
 609                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 610                            __func__, res);
 611         }
 612 }
 613
 614
 615 static int process_beacon_event(struct nl_msg *msg, void *arg)
 616 {
 617         struct nl80211_wiphy_data *w = arg;
 618         struct wpa_driver_nl80211_data *drv;
 619         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 620         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 621         union wpa_event_data event;
 622
 623         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 624                   genlmsg_attrlen(gnlh, 0), NULL);
 625
 626         if (gnlh->cmd != NL80211_CMD_FRAME) {
 627                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 628                            gnlh->cmd);
 629                 return NL_SKIP;
 630         }
 631
 632         if (!tb[NL80211_ATTR_FRAME])
 633                 return NL_SKIP;
 634
 635         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 636                          wiphy_list) {
 637                 os_memset(&event, 0, sizeof(event));
 638                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 639                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 640                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 641         }
 642
 643         return NL_SKIP;
 644 }
 645
 646
 647 static struct nl80211_wiphy_data *
 648 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 649 {
 650         static DEFINE_DL_LIST(nl80211_wiphys);
 651         struct nl80211_wiphy_data *w;
 652         int wiphy_idx, found = 0;
 653         struct i802_bss *tmp_bss;
 654
 655         if (bss->wiphy_data != NULL)
 656                 return bss->wiphy_data;
 657
 658         wiphy_idx = nl80211_get_wiphy_index(bss);
 659
 660         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 661                 if (w->wiphy_idx == wiphy_idx)
 662                         goto add;
 663         }
 664
 665         /* alloc new one */
 666         w = os_zalloc(sizeof(*w));
 667         if (w == NULL)
 668                 return NULL;
 669         w->wiphy_idx = wiphy_idx;
 670         dl_list_init(&w->bsss);
 671         dl_list_init(&w->drvs);
 672
 673         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 674         if (!w->nl_cb) {
 675                 os_free(w);
 676                 return NULL;
 677         }
 678         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 679         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 680                   w);
 681
 682         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 683                                          "wiphy beacons");
 684         if (w->nl_beacons == NULL) {
 685                 os_free(w);
 686                 return NULL;
 687         }
 688
 689         if (nl80211_register_beacons(bss->drv, w)) {
 690                 nl_destroy_handles(&w->nl_beacons);
 691                 os_free(w);
 692                 return NULL;
 693         }
 694
 695         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 696
 697         dl_list_add(&nl80211_wiphys, &w->list);
 698
 699 add:
 700         /* drv entry for this bss already there? */
 701         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 702                 if (tmp_bss->drv == bss->drv) {
 703                         found = 1;
 704                         break;
 705                 }
 706         }
 707         /* if not add it */
 708         if (!found)
 709                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 710
 711         dl_list_add(&w->bsss, &bss->wiphy_list);
 712         bss->wiphy_data = w;
 713         return w;
 714 }
 715
 716
 717 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 718 {
 719         struct nl80211_wiphy_data *w = bss->wiphy_data;
 720         struct i802_bss *tmp_bss;
 721         int found = 0;
 722
 723         if (w == NULL)
 724                 return;
 725         bss->wiphy_data = NULL;
 726         dl_list_del(&bss->wiphy_list);
 727
 728         /* still any for this drv present? */
 729         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 730                 if (tmp_bss->drv == bss->drv) {
 731                         found = 1;
 732                         break;
 733                 }
 734         }
 735         /* if not remove it */
 736         if (!found)
 737                 dl_list_del(&bss->drv->wiphy_list);
 738
 739         if (!dl_list_empty(&w->bsss))
 740                 return;
 741
 742         nl80211_destroy_eloop_handle(&w->nl_beacons);
 743
 744         nl_cb_put(w->nl_cb);
 745         dl_list_del(&w->list);
 746         os_free(w);
 747 }
 748
 749
 750 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 751 {
 752         struct i802_bss *bss = priv;
 753         struct wpa_driver_nl80211_data *drv = bss->drv;
 754         if (!drv->associated)
 755                 return -1;
 756         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 757         return 0;
 758 }
 759
 760
 761 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 762 {
 763         struct i802_bss *bss = priv;
 764         struct wpa_driver_nl80211_data *drv = bss->drv;
 765         if (!drv->associated)
 766                 return -1;
 767         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 768         return drv->ssid_len;
 769 }
 770
 771
 772 static void wpa_driver_nl80211_event_newlink(
 773         struct wpa_driver_nl80211_data *drv, char *ifname)
 774 {
 775         union wpa_event_data event;
 776
 777         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 778                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 779                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 780                                    drv->first_bss->ifname);
 781                         return;
 782                 }
 783                 if (!drv->if_removed)
 784                         return;
 785                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 786                            drv->first_bss->ifname);
 787                 drv->if_removed = 0;
 788         }
 789
 790         os_memset(&event, 0, sizeof(event));
 791         os_strlcpy(event.interface_status.ifname, ifname,
 792                    sizeof(event.interface_status.ifname));
 793         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 794         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 795 }
 796
 797
 798 static void wpa_driver_nl80211_event_dellink(
 799         struct wpa_driver_nl80211_data *drv, char *ifname)
 800 {
 801         union wpa_event_data event;
 802
 803         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 804                 if (drv->if_removed) {
 805                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 806                                    ifname);
 807                         return;
 808                 }
 809                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 810                            ifname);
 811                 drv->if_removed = 1;
 812         } else {
 813                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 814                            ifname);
 815         }
 816
 817         os_memset(&event, 0, sizeof(event));
 818         os_strlcpy(event.interface_status.ifname, ifname,
 819                    sizeof(event.interface_status.ifname));
 820         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 821         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 822 }
 823
 824
 825 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 826                                          u8 *buf, size_t len)
 827 {
 828         int attrlen, rta_len;
 829         struct rtattr *attr;
 830
 831         attrlen = len;
 832         attr = (struct rtattr *) buf;
 833
 834         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 835         while (RTA_OK(attr, attrlen)) {
 836                 if (attr->rta_type == IFLA_IFNAME) {
 837                         if (os_strcmp(((char *) attr) + rta_len,
 838                                       drv->first_bss->ifname) == 0)
 839                                 return 1;
 840                         else
 841                                 break;
 842                 }
 843                 attr = RTA_NEXT(attr, attrlen);
 844         }
 845
 846         return 0;
 847 }
 848
 849
 850 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 851                                           int ifindex, u8 *buf, size_t len)
 852 {
 853         if (drv->ifindex == ifindex)
 854                 return 1;
 855
 856         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 857                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 858                            "interface");
 859                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 860                 return 1;
 861         }
 862
 863         return 0;
 864 }
 865
 866
 867 static struct wpa_driver_nl80211_data *
 868 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 869 {
 870         struct wpa_driver_nl80211_data *drv;
 871         dl_list_for_each(drv, &global->interfaces,
 872                          struct wpa_driver_nl80211_data, list) {
 873                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 874                     have_ifidx(drv, idx))
 875                         return drv;
 876         }
 877         return NULL;
 878 }
 879
 880
 881 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 882                                                  struct ifinfomsg *ifi,
 883                                                  u8 *buf, size_t len)
 884 {
 885         struct nl80211_global *global = ctx;
 886         struct wpa_driver_nl80211_data *drv;
 887         int attrlen;
 888         struct rtattr *attr;
 889         u32 brid = 0;
 890         char namebuf[IFNAMSIZ];
 891         char ifname[IFNAMSIZ + 1];
 892         char extra[100], *pos, *end;
 893
 894         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 895         if (!drv) {
 896                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 897                            ifi->ifi_index);
 898                 return;
 899         }
 900
 901         extra[0] = '\0';
 902         pos = extra;
 903         end = pos + sizeof(extra);
 904         ifname[0] = '\0';
 905
 906         attrlen = len;
 907         attr = (struct rtattr *) buf;
 908         while (RTA_OK(attr, attrlen)) {
 909                 switch (attr->rta_type) {
 910                 case IFLA_IFNAME:
 911                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 912                                 break;
 913                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 914                         ifname[RTA_PAYLOAD(attr)] = '\0';
 915                         break;
 916                 case IFLA_MASTER:
 917                         brid = nla_get_u32((struct nlattr *) attr);
 918                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 919                         break;
 920                 case IFLA_WIRELESS:
 921                         pos += os_snprintf(pos, end - pos, " wext");
 922                         break;
 923                 case IFLA_OPERSTATE:
 924                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 925                                            nla_get_u32((struct nlattr *) attr));
 926                         break;
 927                 case IFLA_LINKMODE:
 928                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 929                                            nla_get_u32((struct nlattr *) attr));
 930                         break;
 931                 }
 932                 attr = RTA_NEXT(attr, attrlen);
 933         }
 934         extra[sizeof(extra) - 1] = '\0';
 935
 936         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 937                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 938                    ifi->ifi_flags,
 939                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 940                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 941                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 942                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 943
 944         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 945                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 946                     linux_iface_up(drv->global->ioctl_sock,
 947                                    drv->first_bss->ifname) > 0) {
 948                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 949                                    "event since interface %s is up", namebuf);
 950                         drv->ignore_if_down_event = 0;
 951                         return;
 952                 }
 953                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 954                 if (drv->ignore_if_down_event) {
 955                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 956                                    "event generated by mode change");
 957                         drv->ignore_if_down_event = 0;
 958                 } else {
 959                         drv->if_disabled = 1;
 960                         wpa_supplicant_event(drv->ctx,
 961                                              EVENT_INTERFACE_DISABLED, NULL);
 962
 963                         /*
 964                          * Try to get drv again, since it may be removed as
 965                          * part of the EVENT_INTERFACE_DISABLED handling for
 966                          * dynamic interfaces
 967                          */
 968                         drv = nl80211_find_drv(global, ifi->ifi_index,
 969                                                buf, len);
 970                         if (!drv)
 971                                 return;
 972                 }
 973         }
 974
 975         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 976                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 977                     linux_iface_up(drv->global->ioctl_sock,
 978                                    drv->first_bss->ifname) == 0) {
 979                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 980                                    "event since interface %s is down",
 981                                    namebuf);
 982                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 983                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 984                                    "event since interface %s does not exist",
 985                                    drv->first_bss->ifname);
 986                 } else if (drv->if_removed) {
 987                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 988                                    "event since interface %s is marked "
 989                                    "removed", drv->first_bss->ifname);
 990                 } else {
 991                         struct i802_bss *bss;
 992                         u8 addr[ETH_ALEN];
 993
 994                         /* Re-read MAC address as it may have changed */
 995                         bss = get_bss_ifindex(drv, ifi->ifi_index);
 996                         if (bss &&
 997                             linux_get_ifhwaddr(drv->global->ioctl_sock,
 998                                                bss->ifname, addr) < 0) {
 999                                 wpa_printf(MSG_DEBUG,
1000                                            "nl80211: %s: failed to re-read MAC address",
1001                                            bss->ifname);
1002                         } else if (bss &&
1003                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1004                                 wpa_printf(MSG_DEBUG,
1005                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1006                                            MACSTR " to " MACSTR,
1007                                            ifi->ifi_index, bss->ifname,
1008                                            MAC2STR(bss->addr),
1009                                            MAC2STR(addr));
1010                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1011                         }
1012
1013                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1014                         drv->if_disabled = 0;
1015                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1016                                              NULL);
1017                 }
1018         }
1019
1020         /*
1021          * Some drivers send the association event before the operup event--in
1022          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1023          * fails. This will hit us when wpa_supplicant does not need to do
1024          * IEEE 802.1X authentication
1025          */
1026         if (drv->operstate == 1 &&
1027             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1028             !(ifi->ifi_flags & IFF_RUNNING)) {
1029                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1030                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1031                                        -1, IF_OPER_UP);
1032         }
1033
1034         if (ifname[0])
1035                 wpa_driver_nl80211_event_newlink(drv, ifname);
1036
1037         if (ifi->ifi_family == AF_BRIDGE && brid) {
1038                 struct i802_bss *bss;
1039
1040                 /* device has been added to bridge */
1041                 if_indextoname(brid, namebuf);
1042                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1043                            brid, namebuf);
1044                 add_ifidx(drv, brid);
1045
1046                 for (bss = drv->first_bss; bss; bss = bss->next) {
1047                         if (os_strcmp(ifname, bss->ifname) == 0) {
1048                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1049                                 break;
1050                         }
1051                 }
1052         }
1053 }
1054
1055
1056 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1057                                                  struct ifinfomsg *ifi,
1058                                                  u8 *buf, size_t len)
1059 {
1060         struct nl80211_global *global = ctx;
1061         struct wpa_driver_nl80211_data *drv;
1062         int attrlen;
1063         struct rtattr *attr;
1064         u32 brid = 0;
1065         char ifname[IFNAMSIZ + 1];
1066         char extra[100], *pos, *end;
1067
1068         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1069         if (!drv) {
1070                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1071                            ifi->ifi_index);
1072                 return;
1073         }
1074
1075         extra[0] = '\0';
1076         pos = extra;
1077         end = pos + sizeof(extra);
1078         ifname[0] = '\0';
1079
1080         attrlen = len;
1081         attr = (struct rtattr *) buf;
1082         while (RTA_OK(attr, attrlen)) {
1083                 switch (attr->rta_type) {
1084                 case IFLA_IFNAME:
1085                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1086                                 break;
1087                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1088                         ifname[RTA_PAYLOAD(attr)] = '\0';
1089                         break;
1090                 case IFLA_MASTER:
1091                         brid = nla_get_u32((struct nlattr *) attr);
1092                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1093                         break;
1094                 case IFLA_OPERSTATE:
1095                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1096                                            nla_get_u32((struct nlattr *) attr));
1097                         break;
1098                 case IFLA_LINKMODE:
1099                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1100                                            nla_get_u32((struct nlattr *) attr));
1101                         break;
1102                 }
1103                 attr = RTA_NEXT(attr, attrlen);
1104         }
1105         extra[sizeof(extra) - 1] = '\0';
1106
1107         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1108                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1109                    ifi->ifi_flags,
1110                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1111                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1112                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1113                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1114
1115         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1116                 wpa_driver_nl80211_event_dellink(drv, ifname);
1117
1118         if (ifi->ifi_family == AF_BRIDGE && brid) {
1119                 /* device has been removed from bridge */
1120                 char namebuf[IFNAMSIZ];
1121                 if_indextoname(brid, namebuf);
1122                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1123                            "%s", brid, namebuf);
1124                 del_ifidx(drv, brid);
1125         }
1126 }
1127
1128
1129 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1130 {
1131         struct nl_msg *msg;
1132         int ret;
1133         struct nl80211_bss_info_arg arg;
1134
1135         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1136         os_memset(&arg, 0, sizeof(arg));
1137         arg.drv = drv;
1138         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1139         if (ret == 0) {
1140                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1141                         arg.ibss_freq : arg.assoc_freq;
1142                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1143                            "associated BSS from scan results: %u MHz", freq);
1144                 if (freq)
1145                         drv->assoc_freq = freq;
1146                 return drv->assoc_freq;
1147         }
1148         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1149                    "(%s)", ret, strerror(-ret));
1150         return drv->assoc_freq;
1151 }
1152
1153
1154 static int get_link_signal(struct nl_msg *msg, void *arg)
1155 {
1156         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1157         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1158         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1159         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1160                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1161                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1162         };
1163         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1164         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1165                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1166                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1167                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1168                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1169         };
1170         struct wpa_signal_info *sig_change = arg;
1171
1172         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1173                   genlmsg_attrlen(gnlh, 0), NULL);
1174         if (!tb[NL80211_ATTR_STA_INFO] ||
1175             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1176                              tb[NL80211_ATTR_STA_INFO], policy))
1177                 return NL_SKIP;
1178         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1179                 return NL_SKIP;
1180
1181         sig_change->current_signal =
1182                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1183
1184         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1185                 sig_change->avg_signal =
1186                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1187         else
1188                 sig_change->avg_signal = 0;
1189
1190         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1191                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1192                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1193                                      rate_policy)) {
1194                         sig_change->current_txrate = 0;
1195                 } else {
1196                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1197                                 sig_change->current_txrate =
1198                                         nla_get_u16(rinfo[
1199                                              NL80211_RATE_INFO_BITRATE]) * 100;
1200                         }
1201                 }
1202         }
1203
1204         return NL_SKIP;
1205 }
1206
1207
1208 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1209                             struct wpa_signal_info *sig)
1210 {
1211         struct nl_msg *msg;
1212
1213         sig->current_signal = -9999;
1214         sig->current_txrate = 0;
1215
1216         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1217             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1218                 nlmsg_free(msg);
1219                 return -ENOBUFS;
1220         }
1221
1222         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1223 }
1224
1225
1226 static int get_link_noise(struct nl_msg *msg, void *arg)
1227 {
1228         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1229         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1230         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1231         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1232                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1233                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1234         };
1235         struct wpa_signal_info *sig_change = arg;
1236
1237         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1238                   genlmsg_attrlen(gnlh, 0), NULL);
1239
1240         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1241                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1242                 return NL_SKIP;
1243         }
1244
1245         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1246                              tb[NL80211_ATTR_SURVEY_INFO],
1247                              survey_policy)) {
1248                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1249                            "attributes!");
1250                 return NL_SKIP;
1251         }
1252
1253         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1254                 return NL_SKIP;
1255
1256         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1257             sig_change->frequency)
1258                 return NL_SKIP;
1259
1260         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1261                 return NL_SKIP;
1262
1263         sig_change->current_noise =
1264                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1265
1266         return NL_SKIP;
1267 }
1268
1269
1270 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1271                            struct wpa_signal_info *sig_change)
1272 {
1273         struct nl_msg *msg;
1274
1275         sig_change->current_noise = 9999;
1276         sig_change->frequency = drv->assoc_freq;
1277
1278         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1279         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1280 }
1281
1282
1283 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1284 {
1285         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1286         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1287         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1288         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1289                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1290                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1291         };
1292         struct wpa_scan_results *scan_results = arg;
1293         struct wpa_scan_res *scan_res;
1294         size_t i;
1295
1296         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1297                   genlmsg_attrlen(gnlh, 0), NULL);
1298
1299         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1300                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1301                 return NL_SKIP;
1302         }
1303
1304         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1305                              tb[NL80211_ATTR_SURVEY_INFO],
1306                              survey_policy)) {
1307                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1308                            "attributes");
1309                 return NL_SKIP;
1310         }
1311
1312         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1313                 return NL_SKIP;
1314
1315         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1316                 return NL_SKIP;
1317
1318         for (i = 0; i < scan_results->num; ++i) {
1319                 scan_res = scan_results->res[i];
1320                 if (!scan_res)
1321                         continue;
1322                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1323                     scan_res->freq)
1324                         continue;
1325                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1326                         continue;
1327                 scan_res->noise = (s8)
1328                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1329                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1330         }
1331
1332         return NL_SKIP;
1333 }
1334
1335
1336 static int nl80211_get_noise_for_scan_results(
1337         struct wpa_driver_nl80211_data *drv,
1338         struct wpa_scan_results *scan_res)
1339 {
1340         struct nl_msg *msg;
1341
1342         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1343         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1344                                   scan_res);
1345 }
1346
1347
1348 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1349                                              void *handle)
1350 {
1351         struct nl_cb *cb = eloop_ctx;
1352         int res;
1353
1354         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1355
1356         res = nl_recvmsgs(handle, cb);
1357         if (res < 0) {
1358                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1359                            __func__, res);
1360         }
1361 }
1362
1363
1364 /**
1365  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1366  * @priv: driver_nl80211 private data
1367  * @alpha2_arg: country to which to switch to
1368  * Returns: 0 on success, -1 on failure
1369  *
1370  * This asks nl80211 to set the regulatory domain for given
1371  * country ISO / IEC alpha2.
1372  */
1373 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1374 {
1375         struct i802_bss *bss = priv;
1376         struct wpa_driver_nl80211_data *drv = bss->drv;
1377         char alpha2[3];
1378         struct nl_msg *msg;
1379
1380         msg = nlmsg_alloc();
1381         if (!msg)
1382                 return -ENOMEM;
1383
1384         alpha2[0] = alpha2_arg[0];
1385         alpha2[1] = alpha2_arg[1];
1386         alpha2[2] = '\0';
1387
1388         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1389             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1390                 nlmsg_free(msg);
1391                 return -EINVAL;
1392         }
1393         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1394                 return -EINVAL;
1395         return 0;
1396 }
1397
1398
1399 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1400 {
1401         char *alpha2 = arg;
1402         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1403         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1404
1405         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1406                   genlmsg_attrlen(gnlh, 0), NULL);
1407         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1408                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1409                 return NL_SKIP;
1410         }
1411         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1412         return NL_SKIP;
1413 }
1414
1415
1416 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1417 {
1418         struct i802_bss *bss = priv;
1419         struct wpa_driver_nl80211_data *drv = bss->drv;
1420         struct nl_msg *msg;
1421         int ret;
1422
1423         msg = nlmsg_alloc();
1424         if (!msg)
1425                 return -ENOMEM;
1426
1427         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1428         alpha2[0] = '\0';
1429         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1430         if (!alpha2[0])
1431                 ret = -1;
1432
1433         return ret;
1434 }
1435
1436
1437 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1438 {
1439         int ret;
1440
1441         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1442         if (global->nl_cb == NULL) {
1443                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1444                            "callbacks");
1445                 return -1;
1446         }
1447
1448         global->nl = nl_create_handle(global->nl_cb, "nl");
1449         if (global->nl == NULL)
1450                 goto err;
1451
1452         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1453         if (global->nl80211_id < 0) {
1454                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1455                            "found");
1456                 goto err;
1457         }
1458
1459         global->nl_event = nl_create_handle(global->nl_cb, "event");
1460         if (global->nl_event == NULL)
1461                 goto err;
1462
1463         ret = nl_get_multicast_id(global, "nl80211", "scan");
1464         if (ret >= 0)
1465                 ret = nl_socket_add_membership(global->nl_event, ret);
1466         if (ret < 0) {
1467                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1468                            "membership for scan events: %d (%s)",
1469                            ret, strerror(-ret));
1470                 goto err;
1471         }
1472
1473         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1474         if (ret >= 0)
1475                 ret = nl_socket_add_membership(global->nl_event, ret);
1476         if (ret < 0) {
1477                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1478                            "membership for mlme events: %d (%s)",
1479                            ret, strerror(-ret));
1480                 goto err;
1481         }
1482
1483         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1484         if (ret >= 0)
1485                 ret = nl_socket_add_membership(global->nl_event, ret);
1486         if (ret < 0) {
1487                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1488                            "membership for regulatory events: %d (%s)",
1489                            ret, strerror(-ret));
1490                 /* Continue without regulatory events */
1491         }
1492
1493         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1494         if (ret >= 0)
1495                 ret = nl_socket_add_membership(global->nl_event, ret);
1496         if (ret < 0) {
1497                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1498                            "membership for vendor events: %d (%s)",
1499                            ret, strerror(-ret));
1500                 /* Continue without vendor events */
1501         }
1502
1503         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1504                   no_seq_check, NULL);
1505         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1506                   process_global_event, global);
1507
1508         nl80211_register_eloop_read(&global->nl_event,
1509                                     wpa_driver_nl80211_event_receive,
1510                                     global->nl_cb);
1511
1512         return 0;
1513
1514 err:
1515         nl_destroy_handles(&global->nl_event);
1516         nl_destroy_handles(&global->nl);
1517         nl_cb_put(global->nl_cb);
1518         global->nl_cb = NULL;
1519         return -1;
1520 }
1521
1522
1523 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1524 {
1525         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1526         if (!drv->nl_cb) {
1527                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
1528                 return -1;
1529         }
1530
1531         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1532                   no_seq_check, NULL);
1533         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1534                   process_drv_event, drv);
1535
1536         return 0;
1537 }
1538
1539
1540 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1541 {
1542         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1543         /*
1544          * This may be for any interface; use ifdown event to disable
1545          * interface.
1546          */
1547 }
1548
1549
1550 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1551 {
1552         struct wpa_driver_nl80211_data *drv = ctx;
1553         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1554         if (i802_set_iface_flags(drv->first_bss, 1)) {
1555                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1556                            "after rfkill unblock");
1557                 return;
1558         }
1559         /* rtnetlink ifup handler will report interface as enabled */
1560 }
1561
1562
1563 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1564                                                       void *eloop_ctx,
1565                                                       void *handle)
1566 {
1567         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1568         u8 data[2048];
1569         struct msghdr msg;
1570         struct iovec entry;
1571         u8 control[512];
1572         struct cmsghdr *cmsg;
1573         int res, found_ee = 0, found_wifi = 0, acked = 0;
1574         union wpa_event_data event;
1575
1576         memset(&msg, 0, sizeof(msg));
1577         msg.msg_iov = &entry;
1578         msg.msg_iovlen = 1;
1579         entry.iov_base = data;
1580         entry.iov_len = sizeof(data);
1581         msg.msg_control = &control;
1582         msg.msg_controllen = sizeof(control);
1583
1584         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1585         /* if error or not fitting 802.3 header, return */
1586         if (res < 14)
1587                 return;
1588
1589         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1590         {
1591                 if (cmsg->cmsg_level == SOL_SOCKET &&
1592                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1593                         int *ack;
1594
1595                         found_wifi = 1;
1596                         ack = (void *)CMSG_DATA(cmsg);
1597                         acked = *ack;
1598                 }
1599
1600                 if (cmsg->cmsg_level == SOL_PACKET &&
1601                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1602                         struct sock_extended_err *err =
1603                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1604
1605                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1606                                 found_ee = 1;
1607                 }
1608         }
1609
1610         if (!found_ee || !found_wifi)
1611                 return;
1612
1613         memset(&event, 0, sizeof(event));
1614         event.eapol_tx_status.dst = data;
1615         event.eapol_tx_status.data = data + 14;
1616         event.eapol_tx_status.data_len = res - 14;
1617         event.eapol_tx_status.ack = acked;
1618         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1619 }
1620
1621
1622 static int nl80211_init_bss(struct i802_bss *bss)
1623 {
1624         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1625         if (!bss->nl_cb)
1626                 return -1;
1627
1628         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1629                   no_seq_check, NULL);
1630         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1631                   process_bss_event, bss);
1632
1633         return 0;
1634 }
1635
1636
1637 static void nl80211_destroy_bss(struct i802_bss *bss)
1638 {
1639         nl_cb_put(bss->nl_cb);
1640         bss->nl_cb = NULL;
1641 }
1642
1643
1644 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1645                                           void *global_priv, int hostapd,
1646                                           const u8 *set_addr,
1647                                           const char *driver_params)
1648 {
1649         struct wpa_driver_nl80211_data *drv;
1650         struct rfkill_config *rcfg;
1651         struct i802_bss *bss;
1652
1653         if (global_priv == NULL)
1654                 return NULL;
1655         drv = os_zalloc(sizeof(*drv));
1656         if (drv == NULL)
1657                 return NULL;
1658         drv->global = global_priv;
1659         drv->ctx = ctx;
1660         drv->hostapd = !!hostapd;
1661         drv->eapol_sock = -1;
1662         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1663         drv->if_indices = drv->default_if_indices;
1664
1665         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1666         if (!drv->first_bss) {
1667                 os_free(drv);
1668                 return NULL;
1669         }
1670         bss = drv->first_bss;
1671         bss->drv = drv;
1672         bss->ctx = ctx;
1673
1674         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1675         drv->monitor_ifidx = -1;
1676         drv->monitor_sock = -1;
1677         drv->eapol_tx_sock = -1;
1678         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1679
1680         if (wpa_driver_nl80211_init_nl(drv)) {
1681                 os_free(drv);
1682                 return NULL;
1683         }
1684
1685         if (nl80211_init_bss(bss))
1686                 goto failed;
1687
1688         rcfg = os_zalloc(sizeof(*rcfg));
1689         if (rcfg == NULL)
1690                 goto failed;
1691         rcfg->ctx = drv;
1692         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1693         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1694         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1695         drv->rfkill = rfkill_init(rcfg);
1696         if (drv->rfkill == NULL) {
1697                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1698                 os_free(rcfg);
1699         }
1700
1701         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1702                 drv->start_iface_up = 1;
1703
1704         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1705                 goto failed;
1706
1707         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1708         if (drv->eapol_tx_sock < 0)
1709                 goto failed;
1710
1711         if (drv->data_tx_status) {
1712                 int enabled = 1;
1713
1714                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1715                                &enabled, sizeof(enabled)) < 0) {
1716                         wpa_printf(MSG_DEBUG,
1717                                 "nl80211: wifi status sockopt failed\n");
1718                         drv->data_tx_status = 0;
1719                         if (!drv->use_monitor)
1720                                 drv->capa.flags &=
1721                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1722                 } else {
1723                         eloop_register_read_sock(drv->eapol_tx_sock,
1724                                 wpa_driver_nl80211_handle_eapol_tx_status,
1725                                 drv, NULL);
1726                 }
1727         }
1728
1729         if (drv->global) {
1730                 dl_list_add(&drv->global->interfaces, &drv->list);
1731                 drv->in_interface_list = 1;
1732         }
1733
1734         return bss;
1735
1736 failed:
1737         wpa_driver_nl80211_deinit(bss);
1738         return NULL;
1739 }
1740
1741
1742 /**
1743  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1744  * @ctx: context to be used when calling wpa_supplicant functions,
1745  * e.g., wpa_supplicant_event()
1746  * @ifname: interface name, e.g., wlan0
1747  * @global_priv: private driver global data from global_init()
1748  * Returns: Pointer to private data, %NULL on failure
1749  */
1750 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1751                                       void *global_priv)
1752 {
1753         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1754                                            NULL);
1755 }
1756
1757
1758 static int nl80211_register_frame(struct i802_bss *bss,
1759                                   struct nl_handle *nl_handle,
1760                                   u16 type, const u8 *match, size_t match_len)
1761 {
1762         struct wpa_driver_nl80211_data *drv = bss->drv;
1763         struct nl_msg *msg;
1764         int ret;
1765         char buf[30];
1766
1767         buf[0] = '\0';
1768         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1769         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1770                    type, fc2str(type), nl_handle, buf);
1771
1772         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1773             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1774             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1775                 nlmsg_free(msg);
1776                 return -1;
1777         }
1778
1779         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1780         if (ret) {
1781                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1782                            "failed (type=%u): ret=%d (%s)",
1783                            type, ret, strerror(-ret));
1784                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1785                             match, match_len);
1786         }
1787         return ret;
1788 }
1789
1790
1791 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1792 {
1793         struct wpa_driver_nl80211_data *drv = bss->drv;
1794
1795         if (bss->nl_mgmt) {
1796                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1797                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1798                 return -1;
1799         }
1800
1801         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
1802         if (bss->nl_mgmt == NULL)
1803                 return -1;
1804
1805         return 0;
1806 }
1807
1808
1809 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1810 {
1811         nl80211_register_eloop_read(&bss->nl_mgmt,
1812                                     wpa_driver_nl80211_event_receive,
1813                                     bss->nl_cb);
1814 }
1815
1816
1817 static int nl80211_register_action_frame(struct i802_bss *bss,
1818                                          const u8 *match, size_t match_len)
1819 {
1820         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1821         return nl80211_register_frame(bss, bss->nl_mgmt,
1822                                       type, match, match_len);
1823 }
1824
1825
1826 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1827 {
1828         struct wpa_driver_nl80211_data *drv = bss->drv;
1829         int ret = 0;
1830
1831         if (nl80211_alloc_mgmt_handle(bss))
1832                 return -1;
1833         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1834                    "handle %p", bss->nl_mgmt);
1835
1836         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1837                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1838
1839                 /* register for any AUTH message */
1840                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1841         }
1842
1843 #ifdef CONFIG_INTERWORKING
1844         /* QoS Map Configure */
1845         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1846                 ret = -1;
1847 #endif /* CONFIG_INTERWORKING */
1848 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1849         /* GAS Initial Request */
1850         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1851                 ret = -1;
1852         /* GAS Initial Response */
1853         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1854                 ret = -1;
1855         /* GAS Comeback Request */
1856         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1857                 ret = -1;
1858         /* GAS Comeback Response */
1859         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1860                 ret = -1;
1861         /* Protected GAS Initial Request */
1862         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1863                 ret = -1;
1864         /* Protected GAS Initial Response */
1865         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1866                 ret = -1;
1867         /* Protected GAS Comeback Request */
1868         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1869                 ret = -1;
1870         /* Protected GAS Comeback Response */
1871         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1872                 ret = -1;
1873 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1874 #ifdef CONFIG_P2P
1875         /* P2P Public Action */
1876         if (nl80211_register_action_frame(bss,
1877                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1878                                           6) < 0)
1879                 ret = -1;
1880         /* P2P Action */
1881         if (nl80211_register_action_frame(bss,
1882                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1883                                           5) < 0)
1884                 ret = -1;
1885 #endif /* CONFIG_P2P */
1886 #ifdef CONFIG_IEEE80211W
1887         /* SA Query Response */
1888         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1889                 ret = -1;
1890 #endif /* CONFIG_IEEE80211W */
1891 #ifdef CONFIG_TDLS
1892         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1893                 /* TDLS Discovery Response */
1894                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1895                     0)
1896                         ret = -1;
1897         }
1898 #endif /* CONFIG_TDLS */
1899
1900         /* FT Action frames */
1901         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1902                 ret = -1;
1903         else
1904                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1905                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1906
1907         /* WNM - BSS Transition Management Request */
1908         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1909                 ret = -1;
1910         /* WNM-Sleep Mode Response */
1911         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1912                 ret = -1;
1913
1914 #ifdef CONFIG_HS20
1915         /* WNM-Notification */
1916         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1917                 ret = -1;
1918 #endif /* CONFIG_HS20 */
1919
1920         /* WMM-AC ADDTS Response */
1921         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1922                 return -1;
1923
1924         /* WMM-AC DELTS */
1925         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1926                 return -1;
1927
1928         /* Radio Measurement - Neighbor Report Response */
1929         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1930                 ret = -1;
1931
1932         /* Radio Measurement - Link Measurement Request */
1933         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1934             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1935                 ret = -1;
1936
1937         nl80211_mgmt_handle_register_eloop(bss);
1938
1939         return ret;
1940 }
1941
1942
1943 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1944 {
1945         int ret = 0;
1946
1947         if (nl80211_alloc_mgmt_handle(bss))
1948                 return -1;
1949
1950         wpa_printf(MSG_DEBUG,
1951                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1952                    bss->nl_mgmt);
1953
1954         /* Auth frames for mesh SAE */
1955         if (nl80211_register_frame(bss, bss->nl_mgmt,
1956                                    (WLAN_FC_TYPE_MGMT << 2) |
1957                                    (WLAN_FC_STYPE_AUTH << 4),
1958                                    NULL, 0) < 0)
1959                 ret = -1;
1960
1961         /* Mesh peering open */
1962         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1963                 ret = -1;
1964         /* Mesh peering confirm */
1965         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1966                 ret = -1;
1967         /* Mesh peering close */
1968         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1969                 ret = -1;
1970
1971         nl80211_mgmt_handle_register_eloop(bss);
1972
1973         return ret;
1974 }
1975
1976
1977 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1978 {
1979         struct wpa_driver_nl80211_data *drv = bss->drv;
1980         struct nl_msg *msg;
1981         int ret;
1982
1983         msg = nlmsg_alloc();
1984         if (!msg)
1985                 return -1;
1986
1987         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME) ||
1988             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex)) {
1989                 nlmsg_free(msg);
1990                 return -1;
1991         }
1992
1993         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
1994         if (ret) {
1995                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1996                            "failed: ret=%d (%s)",
1997                            ret, strerror(-ret));
1998         }
1999         return ret;
2000 }
2001
2002
2003 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2004 {
2005         static const int stypes[] = {
2006                 WLAN_FC_STYPE_AUTH,
2007                 WLAN_FC_STYPE_ASSOC_REQ,
2008                 WLAN_FC_STYPE_REASSOC_REQ,
2009                 WLAN_FC_STYPE_DISASSOC,
2010                 WLAN_FC_STYPE_DEAUTH,
2011                 WLAN_FC_STYPE_ACTION,
2012                 WLAN_FC_STYPE_PROBE_REQ,
2013 /* Beacon doesn't work as mac80211 doesn't currently allow
2014  * it, but it wouldn't really be the right thing anyway as
2015  * it isn't per interface ... maybe just dump the scan
2016  * results periodically for OLBC?
2017  */
2018                 /* WLAN_FC_STYPE_BEACON, */
2019         };
2020         unsigned int i;
2021
2022         if (nl80211_alloc_mgmt_handle(bss))
2023                 return -1;
2024         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2025                    "handle %p", bss->nl_mgmt);
2026
2027         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2028                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2029                                            (WLAN_FC_TYPE_MGMT << 2) |
2030                                            (stypes[i] << 4),
2031                                            NULL, 0) < 0) {
2032                         goto out_err;
2033                 }
2034         }
2035
2036         if (nl80211_register_spurious_class3(bss))
2037                 goto out_err;
2038
2039         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2040                 goto out_err;
2041
2042         nl80211_mgmt_handle_register_eloop(bss);
2043         return 0;
2044
2045 out_err:
2046         nl_destroy_handles(&bss->nl_mgmt);
2047         return -1;
2048 }
2049
2050
2051 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2052 {
2053         if (nl80211_alloc_mgmt_handle(bss))
2054                 return -1;
2055         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2056                    "handle %p (device SME)", bss->nl_mgmt);
2057
2058         if (nl80211_register_frame(bss, bss->nl_mgmt,
2059                                    (WLAN_FC_TYPE_MGMT << 2) |
2060                                    (WLAN_FC_STYPE_ACTION << 4),
2061                                    NULL, 0) < 0)
2062                 goto out_err;
2063
2064         nl80211_mgmt_handle_register_eloop(bss);
2065         return 0;
2066
2067 out_err:
2068         nl_destroy_handles(&bss->nl_mgmt);
2069         return -1;
2070 }
2071
2072
2073 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2074 {
2075         if (bss->nl_mgmt == NULL)
2076                 return;
2077         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2078                    "(%s)", bss->nl_mgmt, reason);
2079         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2080
2081         nl80211_put_wiphy_data_ap(bss);
2082 }
2083
2084
2085 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2086 {
2087         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2088 }
2089
2090
2091 static void nl80211_del_p2pdev(struct i802_bss *bss)
2092 {
2093         struct wpa_driver_nl80211_data *drv = bss->drv;
2094         struct nl_msg *msg;
2095         int ret;
2096
2097         msg = nlmsg_alloc();
2098         if (!msg)
2099                 return;
2100
2101         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE) ||
2102             nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id)) {
2103                 nlmsg_free(msg);
2104                 return;
2105         }
2106
2107         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2108
2109         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2110                    bss->ifname, (long long unsigned int) bss->wdev_id,
2111                    strerror(-ret));
2112 }
2113
2114
2115 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2116 {
2117         struct wpa_driver_nl80211_data *drv = bss->drv;
2118         struct nl_msg *msg;
2119         int ret;
2120
2121         msg = nlmsg_alloc();
2122         if (!msg)
2123                 return -1;
2124
2125         if (!nl80211_cmd(drv, msg, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2126                          NL80211_CMD_STOP_P2P_DEVICE) ||
2127             nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id)) {
2128                 nlmsg_free(msg);
2129                 return -1;
2130         }
2131
2132         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2133
2134         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2135                    start ? "Start" : "Stop",
2136                    bss->ifname, (long long unsigned int) bss->wdev_id,
2137                    strerror(-ret));
2138         return ret;
2139 }
2140
2141
2142 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2143 {
2144         enum nl80211_iftype nlmode;
2145
2146         nlmode = nl80211_get_ifmode(bss);
2147         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2148                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2149                                              bss->ifname, up);
2150         }
2151
2152         /* P2P Device has start/stop which is equivalent */
2153         return nl80211_set_p2pdev(bss, up);
2154 }
2155
2156
2157 static int
2158 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2159                                    const u8 *set_addr, int first,
2160                                    const char *driver_params)
2161 {
2162         struct i802_bss *bss = drv->first_bss;
2163         int send_rfkill_event = 0;
2164         enum nl80211_iftype nlmode;
2165
2166         drv->ifindex = if_nametoindex(bss->ifname);
2167         bss->ifindex = drv->ifindex;
2168         bss->wdev_id = drv->global->if_add_wdevid;
2169         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2170
2171         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2172         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2173         drv->global->if_add_wdevid_set = 0;
2174
2175         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2176                 bss->static_ap = 1;
2177
2178         if (wpa_driver_nl80211_capa(drv))
2179                 return -1;
2180
2181         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2182                 return -1;
2183
2184         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2185                    bss->ifname, drv->phyname);
2186
2187         if (set_addr &&
2188             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2189              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2190                                 set_addr)))
2191                 return -1;
2192
2193         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2194                 drv->start_mode_ap = 1;
2195
2196         if (drv->hostapd || bss->static_ap)
2197                 nlmode = NL80211_IFTYPE_AP;
2198         else if (bss->if_dynamic)
2199                 nlmode = nl80211_get_ifmode(bss);
2200         else
2201                 nlmode = NL80211_IFTYPE_STATION;
2202
2203         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2204                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2205                 return -1;
2206         }
2207
2208         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2209                 nl80211_get_macaddr(bss);
2210
2211         if (!rfkill_is_blocked(drv->rfkill)) {
2212                 int ret = i802_set_iface_flags(bss, 1);
2213                 if (ret) {
2214                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2215                                    "interface '%s' UP", bss->ifname);
2216                         return ret;
2217                 }
2218                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2219                         return ret;
2220         } else {
2221                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2222                            "interface '%s' due to rfkill", bss->ifname);
2223                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2224                         return 0;
2225                 drv->if_disabled = 1;
2226                 send_rfkill_event = 1;
2227         }
2228
2229         if (!drv->hostapd)
2230                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2231                                        1, IF_OPER_DORMANT);
2232
2233         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2234                                bss->addr))
2235                 return -1;
2236         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2237
2238         if (send_rfkill_event) {
2239                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2240                                        drv, drv->ctx);
2241         }
2242
2243         return 0;
2244 }
2245
2246
2247 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2248 {
2249         struct nl_msg *msg;
2250
2251         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2252                    drv->ifindex);
2253         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2254         return send_and_recv_msgs(drv, msg, NULL, NULL);
2255 }
2256
2257
2258 /**
2259  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2260  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2261  *
2262  * Shut down driver interface and processing of driver events. Free
2263  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2264  */
2265 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2266 {
2267         struct wpa_driver_nl80211_data *drv = bss->drv;
2268
2269         bss->in_deinit = 1;
2270         if (drv->data_tx_status)
2271                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2272         if (drv->eapol_tx_sock >= 0)
2273                 close(drv->eapol_tx_sock);
2274
2275         if (bss->nl_preq)
2276                 wpa_driver_nl80211_probe_req_report(bss, 0);
2277         if (bss->added_if_into_bridge) {
2278                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2279                                     bss->ifname) < 0)
2280                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2281                                    "interface %s from bridge %s: %s",
2282                                    bss->ifname, bss->brname, strerror(errno));
2283                 if (drv->rtnl_sk)
2284                         nl80211_handle_destroy(drv->rtnl_sk);
2285         }
2286         if (bss->added_bridge) {
2287                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2288                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2289                                    "bridge %s: %s",
2290                                    bss->brname, strerror(errno));
2291         }
2292
2293         nl80211_remove_monitor_interface(drv);
2294
2295         if (is_ap_interface(drv->nlmode))
2296                 wpa_driver_nl80211_del_beacon(drv);
2297
2298         if (drv->eapol_sock >= 0) {
2299                 eloop_unregister_read_sock(drv->eapol_sock);
2300                 close(drv->eapol_sock);
2301         }
2302
2303         if (drv->if_indices != drv->default_if_indices)
2304                 os_free(drv->if_indices);
2305
2306         if (drv->disabled_11b_rates)
2307                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2308
2309         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2310                                IF_OPER_UP);
2311         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2312         rfkill_deinit(drv->rfkill);
2313
2314         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2315
2316         if (!drv->start_iface_up)
2317                 (void) i802_set_iface_flags(bss, 0);
2318
2319         if (drv->addr_changed) {
2320                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2321                                           0) < 0) {
2322                         wpa_printf(MSG_DEBUG,
2323                                    "nl80211: Could not set interface down to restore permanent MAC address");
2324                 }
2325                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2326                                        drv->perm_addr) < 0) {
2327                         wpa_printf(MSG_DEBUG,
2328                                    "nl80211: Could not restore permanent MAC address");
2329                 }
2330         }
2331
2332         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2333                 if (!drv->hostapd || !drv->start_mode_ap)
2334                         wpa_driver_nl80211_set_mode(bss,
2335                                                     NL80211_IFTYPE_STATION);
2336                 nl80211_mgmt_unsubscribe(bss, "deinit");
2337         } else {
2338                 nl80211_mgmt_unsubscribe(bss, "deinit");
2339                 nl80211_del_p2pdev(bss);
2340         }
2341         nl_cb_put(drv->nl_cb);
2342
2343         nl80211_destroy_bss(drv->first_bss);
2344
2345         os_free(drv->filter_ssids);
2346
2347         os_free(drv->auth_ie);
2348
2349         if (drv->in_interface_list)
2350                 dl_list_del(&drv->list);
2351
2352         os_free(drv->extended_capa);
2353         os_free(drv->extended_capa_mask);
2354         os_free(drv->first_bss);
2355         os_free(drv);
2356 }
2357
2358
2359 /**
2360  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2361  * @eloop_ctx: Driver private data
2362  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2363  *
2364  * This function can be used as registered timeout when starting a scan to
2365  * generate a scan completed event if the driver does not report this.
2366  */
2367 void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2368 {
2369         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2370         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2371                 wpa_driver_nl80211_set_mode(drv->first_bss,
2372                                             drv->ap_scan_as_station);
2373                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2374         }
2375         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2376         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2377 }
2378
2379
2380 static struct nl_msg *
2381 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
2382                     struct wpa_driver_scan_params *params, u64 *wdev_id)
2383 {
2384         struct nl_msg *msg;
2385         size_t i;
2386         u32 scan_flags = 0;
2387         int res;
2388
2389         msg = nlmsg_alloc();
2390         if (!msg)
2391                 return NULL;
2392
2393         nl80211_cmd(drv, msg, 0, cmd);
2394
2395         if (!wdev_id)
2396                 res = nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2397         else
2398                 res = nla_put_u64(msg, NL80211_ATTR_WDEV, *wdev_id);
2399         if (res < 0)
2400                 goto fail;
2401
2402         if (params->num_ssids) {
2403                 struct nlattr *ssids;
2404
2405                 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
2406                 if (ssids == NULL)
2407                         goto fail;
2408                 for (i = 0; i < params->num_ssids; i++) {
2409                         wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2410                                           params->ssids[i].ssid,
2411                                           params->ssids[i].ssid_len);
2412                         if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
2413                                     params->ssids[i].ssid))
2414                                 goto fail;
2415                 }
2416                 nla_nest_end(msg, ssids);
2417         }
2418
2419         if (params->extra_ies) {
2420                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2421                             params->extra_ies, params->extra_ies_len);
2422                 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
2423                             params->extra_ies))
2424                         goto fail;
2425         }
2426
2427         if (params->freqs) {
2428                 struct nlattr *freqs;
2429                 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
2430                 if (freqs == NULL)
2431                         goto fail;
2432                 for (i = 0; params->freqs[i]; i++) {
2433                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2434                                    "MHz", params->freqs[i]);
2435                         if (nla_put_u32(msg, i + 1, params->freqs[i]))
2436                                 goto fail;
2437                 }
2438                 nla_nest_end(msg, freqs);
2439         }
2440
2441         os_free(drv->filter_ssids);
2442         drv->filter_ssids = params->filter_ssids;
2443         params->filter_ssids = NULL;
2444         drv->num_filter_ssids = params->num_filter_ssids;
2445
2446         if (params->only_new_results) {
2447                 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH");
2448                 scan_flags |= NL80211_SCAN_FLAG_FLUSH;
2449         }
2450
2451         if (params->low_priority && drv->have_low_prio_scan) {
2452                 wpa_printf(MSG_DEBUG,
2453                            "nl80211: Add NL80211_SCAN_FLAG_LOW_PRIORITY");
2454                 scan_flags |= NL80211_SCAN_FLAG_LOW_PRIORITY;
2455         }
2456
2457         if (scan_flags &&
2458             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags))
2459                 goto fail;
2460
2461         return msg;
2462
2463 fail:
2464         nlmsg_free(msg);
2465         return NULL;
2466 }
2467
2468
2469 /**
2470  * wpa_driver_nl80211_scan - Request the driver to initiate scan
2471  * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
2472  * @params: Scan parameters
2473  * Returns: 0 on success, -1 on failure
2474  */
2475 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
2476                                    struct wpa_driver_scan_params *params)
2477 {
2478         struct wpa_driver_nl80211_data *drv = bss->drv;
2479         int ret = -1, timeout;
2480         struct nl_msg *msg = NULL;
2481
2482         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
2483         drv->scan_for_auth = 0;
2484
2485         msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
2486                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2487         if (!msg)
2488                 return -1;
2489
2490         if (params->p2p_probe) {
2491                 struct nlattr *rates;
2492
2493                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
2494
2495                 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
2496                 if (rates == NULL)
2497                         goto fail;
2498
2499                 /*
2500                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2501                  * by masking out everything else apart from the OFDM rates 6,
2502                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2503                  * rates are left enabled.
2504                  */
2505                 if (nla_put(msg, NL80211_BAND_2GHZ, 8,
2506                             "\x0c\x12\x18\x24\x30\x48\x60\x6c"))
2507                         goto fail;
2508                 nla_nest_end(msg, rates);
2509
2510                 if (nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE))
2511                         goto fail;
2512         }
2513
2514         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2515         msg = NULL;
2516         if (ret) {
2517                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2518                            "(%s)", ret, strerror(-ret));
2519                 if (drv->hostapd && is_ap_interface(drv->nlmode)) {
2520                         enum nl80211_iftype old_mode = drv->nlmode;
2521
2522                         /*
2523                          * mac80211 does not allow scan requests in AP mode, so
2524                          * try to do this in station mode.
2525                          */
2526                         if (wpa_driver_nl80211_set_mode(
2527                                     bss, NL80211_IFTYPE_STATION))
2528                                 goto fail;
2529
2530                         if (wpa_driver_nl80211_scan(bss, params)) {
2531                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2532                                 goto fail;
2533                         }
2534
2535                         /* Restore AP mode when processing scan results */
2536                         drv->ap_scan_as_station = old_mode;
2537                         ret = 0;
2538                 } else
2539                         goto fail;
2540         }
2541
2542         drv->scan_state = SCAN_REQUESTED;
2543         /* Not all drivers generate "scan completed" wireless event, so try to
2544          * read results after a timeout. */
2545         timeout = 10;
2546         if (drv->scan_complete_events) {
2547                 /*
2548                  * The driver seems to deliver events to notify when scan is
2549                  * complete, so use longer timeout to avoid race conditions
2550                  * with scanning and following association request.
2551                  */
2552                 timeout = 30;
2553         }
2554         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2555                    "seconds", ret, timeout);
2556         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2557         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2558                                drv, drv->ctx);
2559
2560 fail:
2561         nlmsg_free(msg);
2562         return ret;
2563 }
2564
2565
2566 /**
2567  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2568  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2569  * @params: Scan parameters
2570  * @interval: Interval between scan cycles in milliseconds
2571  * Returns: 0 on success, -1 on failure or if not supported
2572  */
2573 static int wpa_driver_nl80211_sched_scan(void *priv,
2574                                          struct wpa_driver_scan_params *params,
2575                                          u32 interval)
2576 {
2577         struct i802_bss *bss = priv;
2578         struct wpa_driver_nl80211_data *drv = bss->drv;
2579         int ret = -1;
2580         struct nl_msg *msg;
2581         size_t i;
2582
2583         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
2584
2585 #ifdef ANDROID
2586         if (!drv->capa.sched_scan_supported)
2587                 return android_pno_start(bss, params);
2588 #endif /* ANDROID */
2589
2590         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
2591                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2592         if (!msg ||
2593             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval))
2594                 goto fail;
2595
2596         if ((drv->num_filter_ssids &&
2597             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
2598             params->filter_rssi) {
2599                 struct nlattr *match_sets;
2600                 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
2601                 if (match_sets == NULL)
2602                         goto fail;
2603
2604                 for (i = 0; i < drv->num_filter_ssids; i++) {
2605                         struct nlattr *match_set_ssid;
2606                         wpa_hexdump_ascii(MSG_MSGDUMP,
2607                                           "nl80211: Sched scan filter SSID",
2608                                           drv->filter_ssids[i].ssid,
2609                                           drv->filter_ssids[i].ssid_len);
2610
2611                         match_set_ssid = nla_nest_start(msg, i + 1);
2612                         if (match_set_ssid == NULL ||
2613                             nla_put(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2614                                     drv->filter_ssids[i].ssid_len,
2615                                     drv->filter_ssids[i].ssid) ||
2616                             (params->filter_rssi &&
2617                              nla_put_u32(msg,
2618                                          NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2619                                          params->filter_rssi)))
2620                                 goto fail;
2621
2622                         nla_nest_end(msg, match_set_ssid);
2623                 }
2624
2625                 /*
2626                  * Due to backward compatibility code, newer kernels treat this
2627                  * matchset (with only an RSSI filter) as the default for all
2628                  * other matchsets, unless it's the only one, in which case the
2629                  * matchset will actually allow all SSIDs above the RSSI.
2630                  */
2631                 if (params->filter_rssi) {
2632                         struct nlattr *match_set_rssi;
2633                         match_set_rssi = nla_nest_start(msg, 0);
2634                         if (match_set_rssi == NULL ||
2635                             nla_put_u32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2636                                         params->filter_rssi))
2637                                 goto fail;
2638                         wpa_printf(MSG_MSGDUMP,
2639                                    "nl80211: Sched scan RSSI filter %d dBm",
2640                                    params->filter_rssi);
2641                         nla_nest_end(msg, match_set_rssi);
2642                 }
2643
2644                 nla_nest_end(msg, match_sets);
2645         }
2646
2647         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2648
2649         /* TODO: if we get an error here, we should fall back to normal scan */
2650
2651         msg = NULL;
2652         if (ret) {
2653                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2654                            "ret=%d (%s)", ret, strerror(-ret));
2655                 goto fail;
2656         }
2657
2658         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2659                    "scan interval %d msec", ret, interval);
2660
2661 fail:
2662         nlmsg_free(msg);
2663         return ret;
2664 }
2665
2666
2667 /**
2668  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2669  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2670  * Returns: 0 on success, -1 on failure or if not supported
2671  */
2672 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2673 {
2674         struct i802_bss *bss = priv;
2675         struct wpa_driver_nl80211_data *drv = bss->drv;
2676         int ret;
2677         struct nl_msg *msg;
2678
2679 #ifdef ANDROID
2680         if (!drv->capa.sched_scan_supported)
2681                 return android_pno_stop(bss);
2682 #endif /* ANDROID */
2683
2684         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_STOP_SCHED_SCAN);
2685         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2686         if (ret) {
2687                 wpa_printf(MSG_DEBUG,
2688                            "nl80211: Sched scan stop failed: ret=%d (%s)",
2689                            ret, strerror(-ret));
2690         } else {
2691                 wpa_printf(MSG_DEBUG,
2692                            "nl80211: Sched scan stop sent");
2693         }
2694
2695         return ret;
2696 }
2697
2698
2699 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2700 {
2701         const u8 *end, *pos;
2702
2703         if (ies == NULL)
2704                 return NULL;
2705
2706         pos = ies;
2707         end = ies + ies_len;
2708
2709         while (pos + 1 < end) {
2710                 if (pos + 2 + pos[1] > end)
2711                         break;
2712                 if (pos[0] == ie)
2713                         return pos;
2714                 pos += 2 + pos[1];
2715         }
2716
2717         return NULL;
2718 }
2719
2720
2721 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2722                                  const u8 *ie, size_t ie_len)
2723 {
2724         const u8 *ssid;
2725         size_t i;
2726
2727         if (drv->filter_ssids == NULL)
2728                 return 0;
2729
2730         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2731         if (ssid == NULL)
2732                 return 1;
2733
2734         for (i = 0; i < drv->num_filter_ssids; i++) {
2735                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2736                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2737                     0)
2738                         return 0;
2739         }
2740
2741         return 1;
2742 }
2743
2744
2745 static int bss_info_handler(struct nl_msg *msg, void *arg)
2746 {
2747         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2748         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2749         struct nlattr *bss[NL80211_BSS_MAX + 1];
2750         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2751                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2752                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2753                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2754                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2755                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2756                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2757                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2758                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2759                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2760                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2761                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2762         };
2763         struct nl80211_bss_info_arg *_arg = arg;
2764         struct wpa_scan_results *res = _arg->res;
2765         struct wpa_scan_res **tmp;
2766         struct wpa_scan_res *r;
2767         const u8 *ie, *beacon_ie;
2768         size_t ie_len, beacon_ie_len;
2769         u8 *pos;
2770         size_t i;
2771
2772         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2773                   genlmsg_attrlen(gnlh, 0), NULL);
2774         if (!tb[NL80211_ATTR_BSS])
2775                 return NL_SKIP;
2776         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2777                              bss_policy))
2778                 return NL_SKIP;
2779         if (bss[NL80211_BSS_STATUS]) {
2780                 enum nl80211_bss_status status;
2781                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2782                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2783                     bss[NL80211_BSS_FREQUENCY]) {
2784                         _arg->assoc_freq =
2785                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2786                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2787                                    _arg->assoc_freq);
2788                 }
2789                 if (status == NL80211_BSS_STATUS_IBSS_JOINED &&
2790                     bss[NL80211_BSS_FREQUENCY]) {
2791                         _arg->ibss_freq =
2792                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2793                         wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz",
2794                                    _arg->ibss_freq);
2795                 }
2796                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2797                     bss[NL80211_BSS_BSSID]) {
2798                         os_memcpy(_arg->assoc_bssid,
2799                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2800                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2801                                    MACSTR, MAC2STR(_arg->assoc_bssid));
2802                 }
2803         }
2804         if (!res)
2805                 return NL_SKIP;
2806         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2807                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2808                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2809         } else {
2810                 ie = NULL;
2811                 ie_len = 0;
2812         }
2813         if (bss[NL80211_BSS_BEACON_IES]) {
2814                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2815                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2816         } else {
2817                 beacon_ie = NULL;
2818                 beacon_ie_len = 0;
2819         }
2820
2821         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2822                                   ie ? ie_len : beacon_ie_len))
2823                 return NL_SKIP;
2824
2825         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2826         if (r == NULL)
2827                 return NL_SKIP;
2828         if (bss[NL80211_BSS_BSSID])
2829                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2830                           ETH_ALEN);
2831         if (bss[NL80211_BSS_FREQUENCY])
2832                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2833         if (bss[NL80211_BSS_BEACON_INTERVAL])
2834                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2835         if (bss[NL80211_BSS_CAPABILITY])
2836                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2837         r->flags |= WPA_SCAN_NOISE_INVALID;
2838         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2839                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2840                 r->level /= 100; /* mBm to dBm */
2841                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2842         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2843                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2844                 r->flags |= WPA_SCAN_QUAL_INVALID;
2845         } else
2846                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2847         if (bss[NL80211_BSS_TSF])
2848                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2849         if (bss[NL80211_BSS_SEEN_MS_AGO])
2850                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2851         r->ie_len = ie_len;
2852         pos = (u8 *) (r + 1);
2853         if (ie) {
2854                 os_memcpy(pos, ie, ie_len);
2855                 pos += ie_len;
2856         }
2857         r->beacon_ie_len = beacon_ie_len;
2858         if (beacon_ie)
2859                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2860
2861         if (bss[NL80211_BSS_STATUS]) {
2862                 enum nl80211_bss_status status;
2863                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2864                 switch (status) {
2865                 case NL80211_BSS_STATUS_AUTHENTICATED:
2866                         r->flags |= WPA_SCAN_AUTHENTICATED;
2867                         break;
2868                 case NL80211_BSS_STATUS_ASSOCIATED:
2869                         r->flags |= WPA_SCAN_ASSOCIATED;
2870                         break;
2871                 default:
2872                         break;
2873                 }
2874         }
2875
2876         /*
2877          * cfg80211 maintains separate BSS table entries for APs if the same
2878          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
2879          * not use frequency as a separate key in the BSS table, so filter out
2880          * duplicated entries. Prefer associated BSS entry in such a case in
2881          * order to get the correct frequency into the BSS table. Similarly,
2882          * prefer newer entries over older.
2883          */
2884         for (i = 0; i < res->num; i++) {
2885                 const u8 *s1, *s2;
2886                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
2887                         continue;
2888
2889                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
2890                                     res->res[i]->ie_len, WLAN_EID_SSID);
2891                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
2892                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
2893                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
2894                         continue;
2895
2896                 /* Same BSSID,SSID was already included in scan results */
2897                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
2898                            "for " MACSTR, MAC2STR(r->bssid));
2899
2900                 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
2901                      !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
2902                     r->age < res->res[i]->age) {
2903                         os_free(res->res[i]);
2904                         res->res[i] = r;
2905                 } else
2906                         os_free(r);
2907                 return NL_SKIP;
2908         }
2909
2910         tmp = os_realloc_array(res->res, res->num + 1,
2911                                sizeof(struct wpa_scan_res *));
2912         if (tmp == NULL) {
2913                 os_free(r);
2914                 return NL_SKIP;
2915         }
2916         tmp[res->num++] = r;
2917         res->res = tmp;
2918
2919         return NL_SKIP;
2920 }
2921
2922
2923 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2924                                  const u8 *addr)
2925 {
2926         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2927                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2928                            "mismatch (" MACSTR ")", MAC2STR(addr));
2929                 wpa_driver_nl80211_mlme(drv, addr,
2930                                         NL80211_CMD_DEAUTHENTICATE,
2931                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2932         }
2933 }
2934
2935
2936 static void wpa_driver_nl80211_check_bss_status(
2937         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2938 {
2939         size_t i;
2940
2941         for (i = 0; i < res->num; i++) {
2942                 struct wpa_scan_res *r = res->res[i];
2943                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2944                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2945                                    "indicates BSS status with " MACSTR
2946                                    " as authenticated",
2947                                    MAC2STR(r->bssid));
2948                         if (is_sta_interface(drv->nlmode) &&
2949                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2950                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2951                             0) {
2952                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2953                                            " in local state (auth=" MACSTR
2954                                            " assoc=" MACSTR ")",
2955                                            MAC2STR(drv->auth_bssid),
2956                                            MAC2STR(drv->bssid));
2957                                 clear_state_mismatch(drv, r->bssid);
2958                         }
2959                 }
2960
2961                 if (r->flags & WPA_SCAN_ASSOCIATED) {
2962                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2963                                    "indicate BSS status with " MACSTR
2964                                    " as associated",
2965                                    MAC2STR(r->bssid));
2966                         if (is_sta_interface(drv->nlmode) &&
2967                             !drv->associated) {
2968                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2969                                            "(not associated) does not match "
2970                                            "with BSS state");
2971                                 clear_state_mismatch(drv, r->bssid);
2972                         } else if (is_sta_interface(drv->nlmode) &&
2973                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2974                                    0) {
2975                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2976                                            "(associated with " MACSTR ") does "
2977                                            "not match with BSS state",
2978                                            MAC2STR(drv->bssid));
2979                                 clear_state_mismatch(drv, r->bssid);
2980                                 clear_state_mismatch(drv, drv->bssid);
2981                         }
2982                 }
2983         }
2984 }
2985
2986
2987 static struct wpa_scan_results *
2988 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2989 {
2990         struct nl_msg *msg;
2991         struct wpa_scan_results *res;
2992         int ret;
2993         struct nl80211_bss_info_arg arg;
2994
2995         res = os_zalloc(sizeof(*res));
2996         if (res == NULL)
2997                 return NULL;
2998         if (!(msg = nl80211_cmd_msg(drv->first_bss, NLM_F_DUMP,
2999                                     NL80211_CMD_GET_SCAN))) {
3000                 wpa_scan_results_free(res);
3001                 return NULL;
3002         }
3003
3004         arg.drv = drv;
3005         arg.res = res;
3006         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3007         if (ret == 0) {
3008                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3009                            "BSSes)", (unsigned long) res->num);
3010                 nl80211_get_noise_for_scan_results(drv, res);
3011                 return res;
3012         }
3013         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3014                    "(%s)", ret, strerror(-ret));
3015         wpa_scan_results_free(res);
3016         return NULL;
3017 }
3018
3019
3020 /**
3021  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3022  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3023  * Returns: Scan results on success, -1 on failure
3024  */
3025 static struct wpa_scan_results *
3026 wpa_driver_nl80211_get_scan_results(void *priv)
3027 {
3028         struct i802_bss *bss = priv;
3029         struct wpa_driver_nl80211_data *drv = bss->drv;
3030         struct wpa_scan_results *res;
3031
3032         res = nl80211_get_scan_results(drv);
3033         if (res)
3034                 wpa_driver_nl80211_check_bss_status(drv, res);
3035         return res;
3036 }
3037
3038
3039 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3040 {
3041         struct wpa_scan_results *res;
3042         size_t i;
3043
3044         res = nl80211_get_scan_results(drv);
3045         if (res == NULL) {
3046                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3047                 return;
3048         }
3049
3050         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3051         for (i = 0; i < res->num; i++) {
3052                 struct wpa_scan_res *r = res->res[i];
3053                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3054                            (int) i, (int) res->num, MAC2STR(r->bssid),
3055                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3056                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3057         }
3058
3059         wpa_scan_results_free(res);
3060 }
3061
3062
3063 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
3064 {
3065         switch (alg) {
3066         case WPA_ALG_WEP:
3067                 if (key_len == 5)
3068                         return WLAN_CIPHER_SUITE_WEP40;
3069                 return WLAN_CIPHER_SUITE_WEP104;
3070         case WPA_ALG_TKIP:
3071                 return WLAN_CIPHER_SUITE_TKIP;
3072         case WPA_ALG_CCMP:
3073                 return WLAN_CIPHER_SUITE_CCMP;
3074         case WPA_ALG_GCMP:
3075                 return WLAN_CIPHER_SUITE_GCMP;
3076         case WPA_ALG_CCMP_256:
3077                 return WLAN_CIPHER_SUITE_CCMP_256;
3078         case WPA_ALG_GCMP_256:
3079                 return WLAN_CIPHER_SUITE_GCMP_256;
3080         case WPA_ALG_IGTK:
3081                 return WLAN_CIPHER_SUITE_AES_CMAC;
3082         case WPA_ALG_BIP_GMAC_128:
3083                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
3084         case WPA_ALG_BIP_GMAC_256:
3085                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
3086         case WPA_ALG_BIP_CMAC_256:
3087                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
3088         case WPA_ALG_SMS4:
3089                 return WLAN_CIPHER_SUITE_SMS4;
3090         case WPA_ALG_KRK:
3091                 return WLAN_CIPHER_SUITE_KRK;
3092         case WPA_ALG_NONE:
3093         case WPA_ALG_PMK:
3094                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
3095                            alg);
3096                 return 0;
3097         }
3098
3099         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
3100                    alg);
3101         return 0;
3102 }
3103
3104
3105 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
3106 {
3107         switch (cipher) {
3108         case WPA_CIPHER_CCMP_256:
3109                 return WLAN_CIPHER_SUITE_CCMP_256;
3110         case WPA_CIPHER_GCMP_256:
3111                 return WLAN_CIPHER_SUITE_GCMP_256;
3112         case WPA_CIPHER_CCMP:
3113                 return WLAN_CIPHER_SUITE_CCMP;
3114         case WPA_CIPHER_GCMP:
3115                 return WLAN_CIPHER_SUITE_GCMP;
3116         case WPA_CIPHER_TKIP:
3117                 return WLAN_CIPHER_SUITE_TKIP;
3118         case WPA_CIPHER_WEP104:
3119                 return WLAN_CIPHER_SUITE_WEP104;
3120         case WPA_CIPHER_WEP40:
3121                 return WLAN_CIPHER_SUITE_WEP40;
3122         case WPA_CIPHER_GTK_NOT_USED:
3123                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
3124         }
3125
3126         return 0;
3127 }
3128
3129
3130 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
3131                                        int max_suites)
3132 {
3133         int num_suites = 0;
3134
3135         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
3136                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
3137         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
3138                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
3139         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
3140                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
3141         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
3142                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
3143         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
3144                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
3145         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
3146                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
3147         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
3148                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
3149
3150         return num_suites;
3151 }
3152
3153
3154 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
3155                                   const u8 *key, size_t key_len)
3156 {
3157         struct nl_msg *msg;
3158         int ret;
3159
3160         if (!drv->key_mgmt_set_key_vendor_cmd_avail)
3161                 return 0;
3162
3163         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
3164             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
3165             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
3166                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
3167             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
3168                 nlmsg_free(msg);
3169                 return -1;
3170         }
3171         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3172         if (ret) {
3173                 wpa_printf(MSG_DEBUG,
3174                            "nl80211: Key management set key failed: ret=%d (%s)",
3175                            ret, strerror(-ret));
3176         }
3177
3178         return ret;
3179 }
3180
3181
3182 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
3183                                       enum wpa_alg alg, const u8 *addr,
3184                                       int key_idx, int set_tx,
3185                                       const u8 *seq, size_t seq_len,
3186                                       const u8 *key, size_t key_len)
3187 {
3188         struct wpa_driver_nl80211_data *drv = bss->drv;
3189         int ifindex;
3190         struct nl_msg *msg;
3191         int ret;
3192         int tdls = 0;
3193
3194         /* Ignore for P2P Device */
3195         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
3196                 return 0;
3197
3198         ifindex = if_nametoindex(ifname);
3199         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
3200                    "set_tx=%d seq_len=%lu key_len=%lu",
3201                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
3202                    (unsigned long) seq_len, (unsigned long) key_len);
3203 #ifdef CONFIG_TDLS
3204         if (key_idx == -1) {
3205                 key_idx = 0;
3206                 tdls = 1;
3207         }
3208 #endif /* CONFIG_TDLS */
3209
3210         if (alg == WPA_ALG_PMK && drv->key_mgmt_set_key_vendor_cmd_avail) {
3211                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
3212                            __func__);
3213                 ret = issue_key_mgmt_set_key(drv, key, key_len);
3214                 return ret;
3215         }
3216
3217         msg = nlmsg_alloc();
3218         if (!msg)
3219                 return -ENOMEM;
3220
3221         if (alg == WPA_ALG_NONE) {
3222                 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY))
3223                         goto fail;
3224         } else {
3225                 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY) ||
3226                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
3227                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
3228                                 wpa_alg_to_cipher_suite(alg, key_len)))
3229                         goto fail;
3230                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
3231         }
3232
3233         if (seq && seq_len) {
3234                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
3235                         goto fail;
3236                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
3237         }
3238
3239         if (addr && !is_broadcast_ether_addr(addr)) {
3240                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
3241                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
3242                         goto fail;
3243
3244                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3245                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
3246                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
3247                                         NL80211_KEYTYPE_GROUP))
3248                                 goto fail;
3249                 }
3250         } else if (addr && is_broadcast_ether_addr(addr)) {
3251                 struct nlattr *types;
3252
3253                 wpa_printf(MSG_DEBUG, "   broadcast key");
3254
3255                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3256                 if (!types ||
3257                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
3258                         goto fail;
3259                 nla_nest_end(msg, types);
3260         }
3261         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
3262             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex))
3263                 goto fail;
3264
3265         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3266         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3267                 ret = 0;
3268         if (ret)
3269                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3270                            ret, strerror(-ret));
3271
3272         /*
3273          * If we failed or don't need to set the default TX key (below),
3274          * we're done here.
3275          */
3276         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
3277                 return ret;
3278         if (is_ap_interface(drv->nlmode) && addr &&
3279             !is_broadcast_ether_addr(addr))
3280                 return ret;
3281
3282         msg = nlmsg_alloc();
3283         if (!msg)
3284                 return -ENOMEM;
3285
3286         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY) ||
3287             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
3288             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex) ||
3289             nla_put_flag(msg, alg == WPA_ALG_IGTK ?
3290                          NL80211_ATTR_KEY_DEFAULT_MGMT :
3291                          NL80211_ATTR_KEY_DEFAULT))
3292                 goto fail;
3293         if (addr && is_broadcast_ether_addr(addr)) {
3294                 struct nlattr *types;
3295
3296                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3297                 if (!types ||
3298                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
3299                         goto fail;
3300                 nla_nest_end(msg, types);
3301         } else if (addr) {
3302                 struct nlattr *types;
3303
3304                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3305                 if (!types ||
3306                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
3307                         goto fail;
3308                 nla_nest_end(msg, types);
3309         }
3310
3311         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3312         if (ret == -ENOENT)
3313                 ret = 0;
3314         if (ret)
3315                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3316                            "err=%d %s)", ret, strerror(-ret));
3317         return ret;
3318
3319 fail:
3320         nlmsg_free(msg);
3321         return -ENOBUFS;
3322 }
3323
3324
3325 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3326                       int key_idx, int defkey,
3327                       const u8 *seq, size_t seq_len,
3328                       const u8 *key, size_t key_len)
3329 {
3330         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3331         if (!key_attr)
3332                 return -1;
3333
3334         if (defkey && alg == WPA_ALG_IGTK) {
3335                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
3336                         return -1;
3337         } else if (defkey) {
3338                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
3339                         return -1;
3340         }
3341
3342         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
3343             nla_put_u32(msg, NL80211_KEY_CIPHER,
3344                         wpa_alg_to_cipher_suite(alg, key_len)) ||
3345             (seq && seq_len &&
3346              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
3347             nla_put(msg, NL80211_KEY_DATA, key_len, key))
3348                 return -1;
3349
3350         nla_nest_end(msg, key_attr);
3351
3352         return 0;
3353 }
3354
3355
3356 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3357                                  struct nl_msg *msg)
3358 {
3359         int i, privacy = 0;
3360         struct nlattr *nl_keys, *nl_key;
3361
3362         for (i = 0; i < 4; i++) {
3363                 if (!params->wep_key[i])
3364                         continue;
3365                 privacy = 1;
3366                 break;
3367         }
3368         if (params->wps == WPS_MODE_PRIVACY)
3369                 privacy = 1;
3370         if (params->pairwise_suite &&
3371             params->pairwise_suite != WPA_CIPHER_NONE)
3372                 privacy = 1;
3373
3374         if (!privacy)
3375                 return 0;
3376
3377         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3378                 return -ENOBUFS;
3379
3380         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3381         if (!nl_keys)
3382                 return -ENOBUFS;
3383
3384         for (i = 0; i < 4; i++) {
3385                 if (!params->wep_key[i])
3386                         continue;
3387
3388                 nl_key = nla_nest_start(msg, i);
3389                 if (!nl_key ||
3390                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3391                             params->wep_key[i]) ||
3392                     nla_put_u32(msg, NL80211_KEY_CIPHER,
3393                                 params->wep_key_len[i] == 5 ?
3394                                 WLAN_CIPHER_SUITE_WEP40 :
3395                                 WLAN_CIPHER_SUITE_WEP104) ||
3396                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
3397                     (i == params->wep_tx_keyidx &&
3398                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
3399                         return -ENOBUFS;
3400
3401                 nla_nest_end(msg, nl_key);
3402         }
3403         nla_nest_end(msg, nl_keys);
3404
3405         return 0;
3406 }
3407
3408
3409 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3410                                    const u8 *addr, int cmd, u16 reason_code,
3411                                    int local_state_change)
3412 {
3413         int ret;
3414         struct nl_msg *msg;
3415
3416         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
3417             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
3418             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
3419             (local_state_change &&
3420              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
3421                 nlmsg_free(msg);
3422                 return -1;
3423         }
3424
3425         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3426         if (ret) {
3427                 wpa_dbg(drv->ctx, MSG_DEBUG,
3428                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
3429                         reason_code, ret, strerror(-ret));
3430         }
3431         return ret;
3432 }
3433
3434
3435 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3436                                          int reason_code)
3437 {
3438         int ret;
3439
3440         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
3441         nl80211_mark_disconnected(drv);
3442         /* Disconnect command doesn't need BSSID - it uses cached value */
3443         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
3444                                       reason_code, 0);
3445         /*
3446          * For locally generated disconnect, supplicant already generates a
3447          * DEAUTH event, so ignore the event from NL80211.
3448          */
3449         drv->ignore_next_local_disconnect = ret == 0;
3450
3451         return ret;
3452 }
3453
3454
3455 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
3456                                              const u8 *addr, int reason_code)
3457 {
3458         struct wpa_driver_nl80211_data *drv = bss->drv;
3459         int ret;
3460
3461         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
3462                 nl80211_mark_disconnected(drv);
3463                 return nl80211_leave_ibss(drv);
3464         }
3465         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3466                 return wpa_driver_nl80211_disconnect(drv, reason_code);
3467         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3468                    __func__, MAC2STR(addr), reason_code);
3469         nl80211_mark_disconnected(drv);
3470         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3471                                       reason_code, 0);
3472         /*
3473          * For locally generated deauthenticate, supplicant already generates a
3474          * DEAUTH event, so ignore the event from NL80211.
3475          */
3476         drv->ignore_next_local_deauth = ret == 0;
3477         return ret;
3478 }
3479
3480
3481 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
3482                                      struct wpa_driver_auth_params *params)
3483 {
3484         int i;
3485
3486         drv->auth_freq = params->freq;
3487         drv->auth_alg = params->auth_alg;
3488         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
3489         drv->auth_local_state_change = params->local_state_change;
3490         drv->auth_p2p = params->p2p;
3491
3492         if (params->bssid)
3493                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
3494         else
3495                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
3496
3497         if (params->ssid) {
3498                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
3499                 drv->auth_ssid_len = params->ssid_len;
3500         } else
3501                 drv->auth_ssid_len = 0;
3502
3503
3504         os_free(drv->auth_ie);
3505         drv->auth_ie = NULL;
3506         drv->auth_ie_len = 0;
3507         if (params->ie) {
3508                 drv->auth_ie = os_malloc(params->ie_len);
3509                 if (drv->auth_ie) {
3510                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
3511                         drv->auth_ie_len = params->ie_len;
3512                 }
3513         }
3514
3515         for (i = 0; i < 4; i++) {
3516                 if (params->wep_key[i] && params->wep_key_len[i] &&
3517                     params->wep_key_len[i] <= 16) {
3518                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
3519                                   params->wep_key_len[i]);
3520                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
3521                 } else
3522                         drv->auth_wep_key_len[i] = 0;
3523         }
3524 }
3525
3526
3527 static int wpa_driver_nl80211_authenticate(
3528         struct i802_bss *bss, struct wpa_driver_auth_params *params)
3529 {
3530         struct wpa_driver_nl80211_data *drv = bss->drv;
3531         int ret = -1, i;
3532         struct nl_msg *msg;
3533         enum nl80211_auth_type type;
3534         enum nl80211_iftype nlmode;
3535         int count = 0;
3536         int is_retry;
3537
3538         is_retry = drv->retry_auth;
3539         drv->retry_auth = 0;
3540         drv->ignore_deauth_event = 0;
3541
3542         nl80211_mark_disconnected(drv);
3543         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3544         if (params->bssid)
3545                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3546         else
3547                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3548         /* FIX: IBSS mode */
3549         nlmode = params->p2p ?
3550                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3551         if (drv->nlmode != nlmode &&
3552             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3553                 return -1;
3554
3555 retry:
3556         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3557                    drv->ifindex);
3558
3559         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
3560         if (!msg)
3561                 goto fail;
3562
3563         for (i = 0; i < 4; i++) {
3564                 if (!params->wep_key[i])
3565                         continue;
3566                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3567                                            NULL, i,
3568                                            i == params->wep_tx_keyidx, NULL, 0,
3569                                            params->wep_key[i],
3570                                            params->wep_key_len[i]);
3571                 if (params->wep_tx_keyidx != i)
3572                         continue;
3573                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3574                                params->wep_key[i], params->wep_key_len[i]))
3575                         goto fail;
3576         }
3577
3578         if (params->bssid) {
3579                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3580                            MAC2STR(params->bssid));
3581                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
3582                         goto fail;
3583         }
3584         if (params->freq) {
3585                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3586                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
3587                         goto fail;
3588         }
3589         if (params->ssid) {
3590                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3591                                   params->ssid, params->ssid_len);
3592                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
3593                             params->ssid))
3594                         goto fail;
3595         }
3596         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3597         if (params->ie &&
3598             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
3599                 goto fail;
3600         if (params->sae_data) {
3601                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3602                             params->sae_data_len);
3603                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3604                             params->sae_data))
3605                         goto fail;
3606         }
3607         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3608                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3609         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3610                 type = NL80211_AUTHTYPE_SHARED_KEY;
3611         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3612                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3613         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3614                 type = NL80211_AUTHTYPE_FT;
3615         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3616                 type = NL80211_AUTHTYPE_SAE;
3617         else
3618                 goto fail;
3619         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3620         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
3621                 goto fail;
3622         if (params->local_state_change) {
3623                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3624                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
3625                         goto fail;
3626         }
3627
3628         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3629         msg = NULL;
3630         if (ret) {
3631                 wpa_dbg(drv->ctx, MSG_DEBUG,
3632                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3633                         ret, strerror(-ret));
3634                 count++;
3635                 if (ret == -EALREADY && count == 1 && params->bssid &&
3636                     !params->local_state_change) {
3637                         /*
3638                          * mac80211 does not currently accept new
3639                          * authentication if we are already authenticated. As a
3640                          * workaround, force deauthentication and try again.
3641                          */
3642                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3643                                    "after forced deauthentication");
3644                         drv->ignore_deauth_event = 1;
3645                         wpa_driver_nl80211_deauthenticate(
3646                                 bss, params->bssid,
3647                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3648                         nlmsg_free(msg);
3649                         goto retry;
3650                 }
3651
3652                 if (ret == -ENOENT && params->freq && !is_retry) {
3653                         /*
3654                          * cfg80211 has likely expired the BSS entry even
3655                          * though it was previously available in our internal
3656                          * BSS table. To recover quickly, start a single
3657                          * channel scan on the specified channel.
3658                          */
3659                         struct wpa_driver_scan_params scan;
3660                         int freqs[2];
3661
3662                         os_memset(&scan, 0, sizeof(scan));
3663                         scan.num_ssids = 1;
3664                         if (params->ssid) {
3665                                 scan.ssids[0].ssid = params->ssid;
3666                                 scan.ssids[0].ssid_len = params->ssid_len;
3667                         }
3668                         freqs[0] = params->freq;
3669                         freqs[1] = 0;
3670                         scan.freqs = freqs;
3671                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3672                                    "channel scan to refresh cfg80211 BSS "
3673                                    "entry");
3674                         ret = wpa_driver_nl80211_scan(bss, &scan);
3675                         if (ret == 0) {
3676                                 nl80211_copy_auth_params(drv, params);
3677                                 drv->scan_for_auth = 1;
3678                         }
3679                 } else if (is_retry) {
3680                         /*
3681                          * Need to indicate this with an event since the return
3682                          * value from the retry is not delivered to core code.
3683                          */
3684                         union wpa_event_data event;
3685                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3686                                    "failed");
3687                         os_memset(&event, 0, sizeof(event));
3688                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3689                                   ETH_ALEN);
3690                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3691                                              &event);
3692                 }
3693         } else {
3694                 wpa_printf(MSG_DEBUG,
3695                            "nl80211: Authentication request send successfully");
3696         }
3697
3698 fail:
3699         nlmsg_free(msg);
3700         return ret;
3701 }
3702
3703
3704 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3705 {
3706         struct wpa_driver_auth_params params;
3707         struct i802_bss *bss = drv->first_bss;
3708         int i;
3709
3710         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3711
3712         os_memset(&params, 0, sizeof(params));
3713         params.freq = drv->auth_freq;
3714         params.auth_alg = drv->auth_alg;
3715         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3716         params.local_state_change = drv->auth_local_state_change;
3717         params.p2p = drv->auth_p2p;
3718
3719         if (!is_zero_ether_addr(drv->auth_bssid_))
3720                 params.bssid = drv->auth_bssid_;
3721
3722         if (drv->auth_ssid_len) {
3723                 params.ssid = drv->auth_ssid;
3724                 params.ssid_len = drv->auth_ssid_len;
3725         }
3726
3727         params.ie = drv->auth_ie;
3728         params.ie_len = drv->auth_ie_len;
3729
3730         for (i = 0; i < 4; i++) {
3731                 if (drv->auth_wep_key_len[i]) {
3732                         params.wep_key[i] = drv->auth_wep_key[i];
3733                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3734                 }
3735         }
3736
3737         drv->retry_auth = 1;
3738         return wpa_driver_nl80211_authenticate(bss, &params);
3739 }
3740
3741
3742 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3743                                          const void *data, size_t len,
3744                                          int encrypt, int noack,
3745                                          unsigned int freq, int no_cck,
3746                                          int offchanok, unsigned int wait_time)
3747 {
3748         struct wpa_driver_nl80211_data *drv = bss->drv;
3749         u64 cookie;
3750         int res;
3751
3752         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3753                 freq = nl80211_get_assoc_freq(drv);
3754                 wpa_printf(MSG_DEBUG,
3755                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3756                            freq);
3757         }
3758         if (freq == 0) {
3759                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3760                            bss->freq);
3761                 freq = bss->freq;
3762         }
3763
3764         if (drv->use_monitor) {
3765                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3766                            freq, bss->freq);
3767                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3768         }
3769
3770         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3771         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3772                                      &cookie, no_cck, noack, offchanok);
3773         if (res == 0 && !noack) {
3774                 const struct ieee80211_mgmt *mgmt;
3775                 u16 fc;
3776
3777                 mgmt = (const struct ieee80211_mgmt *) data;
3778                 fc = le_to_host16(mgmt->frame_control);
3779                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3780                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3781                         wpa_printf(MSG_MSGDUMP,
3782                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3783                                    (long long unsigned int)
3784                                    drv->send_action_cookie,
3785                                    (long long unsigned int) cookie);
3786                         drv->send_action_cookie = cookie;
3787                 }
3788         }
3789
3790         return res;
3791 }
3792
3793
3794 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3795                                         size_t data_len, int noack,
3796                                         unsigned int freq, int no_cck,
3797                                         int offchanok,
3798                                         unsigned int wait_time)
3799 {
3800         struct wpa_driver_nl80211_data *drv = bss->drv;
3801         struct ieee80211_mgmt *mgmt;
3802         int encrypt = 1;
3803         u16 fc;
3804
3805         mgmt = (struct ieee80211_mgmt *) data;
3806         fc = le_to_host16(mgmt->frame_control);
3807         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3808                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3809                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3810                    fc, fc2str(fc), drv->nlmode);
3811
3812         if ((is_sta_interface(drv->nlmode) ||
3813              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3814             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3815             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3816                 /*
3817                  * The use of last_mgmt_freq is a bit of a hack,
3818                  * but it works due to the single-threaded nature
3819                  * of wpa_supplicant.
3820                  */
3821                 if (freq == 0) {
3822                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3823                                    drv->last_mgmt_freq);
3824                         freq = drv->last_mgmt_freq;
3825                 }
3826                 return nl80211_send_frame_cmd(bss, freq, 0,
3827                                               data, data_len, NULL, 1, noack,
3828                                               1);
3829         }
3830
3831         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3832                 if (freq == 0) {
3833                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3834                                    bss->freq);
3835                         freq = bss->freq;
3836                 }
3837                 return nl80211_send_frame_cmd(bss, freq,
3838                                               (int) freq == bss->freq ? 0 :
3839                                               wait_time,
3840                                               data, data_len,
3841                                               &drv->send_action_cookie,
3842                                               no_cck, noack, offchanok);
3843         }
3844
3845         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3846             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3847                 /*
3848                  * Only one of the authentication frame types is encrypted.
3849                  * In order for static WEP encryption to work properly (i.e.,
3850                  * to not encrypt the frame), we need to tell mac80211 about
3851                  * the frames that must not be encrypted.
3852                  */
3853                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3854                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3855                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3856                         encrypt = 0;
3857         }
3858
3859         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3860         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3861                                              noack, freq, no_cck, offchanok,
3862                                              wait_time);
3863 }
3864
3865
3866 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3867                            int slot, int ht_opmode, int ap_isolate,
3868                            int *basic_rates)
3869 {
3870         struct wpa_driver_nl80211_data *drv = bss->drv;
3871         struct nl_msg *msg;
3872
3873         msg = nlmsg_alloc();
3874         if (!msg)
3875                 return -ENOMEM;
3876
3877         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS) ||
3878             (cts >= 0 &&
3879              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3880             (preamble >= 0 &&
3881              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3882             (slot >= 0 &&
3883              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3884             (ht_opmode >= 0 &&
3885              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3886             (ap_isolate >= 0 &&
3887              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)))
3888                 goto fail;
3889
3890         if (basic_rates) {
3891                 u8 rates[NL80211_MAX_SUPP_RATES];
3892                 u8 rates_len = 0;
3893                 int i;
3894
3895                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
3896                      i++)
3897                         rates[rates_len++] = basic_rates[i] / 5;
3898
3899                 if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
3900                             rates))
3901                         goto fail;
3902         }
3903
3904         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)))
3905                 goto fail;
3906
3907         return send_and_recv_msgs(drv, msg, NULL, NULL);
3908 fail:
3909         nlmsg_free(msg);
3910         return -ENOBUFS;
3911 }
3912
3913
3914 static int wpa_driver_nl80211_set_acl(void *priv,
3915                                       struct hostapd_acl_params *params)
3916 {
3917         struct i802_bss *bss = priv;
3918         struct wpa_driver_nl80211_data *drv = bss->drv;
3919         struct nl_msg *msg;
3920         struct nlattr *acl;
3921         unsigned int i;
3922         int ret;
3923
3924         if (!(drv->capa.max_acl_mac_addrs))
3925                 return -ENOTSUP;
3926
3927         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3928                 return -ENOTSUP;
3929
3930         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3931                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3932
3933         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3934             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3935                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3936                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3937             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3938                 nlmsg_free(msg);
3939                 return -ENOMEM;
3940         }
3941
3942         for (i = 0; i < params->num_mac_acl; i++) {
3943                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3944                         nlmsg_free(msg);
3945                         return -ENOMEM;
3946                 }
3947         }
3948
3949         nla_nest_end(msg, acl);
3950
3951         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3952         if (ret) {
3953                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3954                            ret, strerror(-ret));
3955         }
3956
3957         return ret;
3958 }
3959
3960
3961 static int wpa_driver_nl80211_set_ap(void *priv,
3962                                      struct wpa_driver_ap_params *params)
3963 {
3964         struct i802_bss *bss = priv;
3965         struct wpa_driver_nl80211_data *drv = bss->drv;
3966         struct nl_msg *msg;
3967         u8 cmd = NL80211_CMD_NEW_BEACON;
3968         int ret;
3969         int beacon_set;
3970         int ifindex = if_nametoindex(bss->ifname);
3971         int num_suites;
3972         int smps_mode;
3973         u32 suites[10], suite;
3974         u32 ver;
3975
3976         beacon_set = bss->beacon_set;
3977
3978         msg = nlmsg_alloc();
3979         if (!msg)
3980                 return -ENOMEM;
3981
3982         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3983                    beacon_set);
3984         if (beacon_set)
3985                 cmd = NL80211_CMD_SET_BEACON;
3986
3987         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3988                     params->head, params->head_len);
3989         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3990                     params->tail, params->tail_len);
3991         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
3992         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3993         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3994         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3995                           params->ssid, params->ssid_len);
3996         if (!nl80211_cmd(drv, msg, 0, cmd) ||
3997             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3998                     params->head) ||
3999             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
4000                     params->tail) ||
4001             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex) ||
4002             nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
4003                         params->beacon_int) ||
4004             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
4005             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4006                 goto fail;
4007         if (params->proberesp && params->proberesp_len) {
4008                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
4009                             params->proberesp, params->proberesp_len);
4010                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
4011                             params->proberesp))
4012                         goto fail;
4013         }
4014         switch (params->hide_ssid) {
4015         case NO_SSID_HIDING:
4016                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
4017                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
4018                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
4019                         goto fail;
4020                 break;
4021         case HIDDEN_SSID_ZERO_LEN:
4022                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
4023                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
4024                                 NL80211_HIDDEN_SSID_ZERO_LEN))
4025                         goto fail;
4026                 break;
4027         case HIDDEN_SSID_ZERO_CONTENTS:
4028                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
4029                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
4030                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
4031                         goto fail;
4032                 break;
4033         }
4034         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
4035         if (params->privacy &&
4036             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
4037                 goto fail;
4038         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
4039         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4040             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4041                 /* Leave out the attribute */
4042         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
4043                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
4044                                 NL80211_AUTHTYPE_SHARED_KEY))
4045                         goto fail;
4046         } else {
4047                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
4048                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
4049                         goto fail;
4050         }
4051
4052         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
4053         ver = 0;
4054         if (params->wpa_version & WPA_PROTO_WPA)
4055                 ver |= NL80211_WPA_VERSION_1;
4056         if (params->wpa_version & WPA_PROTO_RSN)
4057                 ver |= NL80211_WPA_VERSION_2;
4058         if (ver &&
4059             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4060                 goto fail;
4061
4062         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
4063                    params->key_mgmt_suites);
4064         num_suites = 0;
4065         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4066                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4067         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4068                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4069         if (num_suites &&
4070             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
4071                     suites))
4072                 goto fail;
4073
4074         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
4075             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
4076             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
4077                 goto fail;
4078
4079         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
4080                    params->pairwise_ciphers);
4081         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
4082                                                  suites, ARRAY_SIZE(suites));
4083         if (num_suites &&
4084             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4085                     num_suites * sizeof(u32), suites))
4086                 goto fail;
4087
4088         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
4089                    params->group_cipher);
4090         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
4091         if (suite &&
4092             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
4093                 goto fail;
4094
4095         switch (params->smps_mode) {
4096         case HT_CAP_INFO_SMPS_DYNAMIC:
4097                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
4098                 smps_mode = NL80211_SMPS_DYNAMIC;
4099                 break;
4100         case HT_CAP_INFO_SMPS_STATIC:
4101                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
4102                 smps_mode = NL80211_SMPS_STATIC;
4103                 break;
4104         default:
4105                 /* invalid - fallback to smps off */
4106         case HT_CAP_INFO_SMPS_DISABLED:
4107                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
4108                 smps_mode = NL80211_SMPS_OFF;
4109                 break;
4110         }
4111         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
4112                 goto fail;
4113
4114         if (params->beacon_ies) {
4115                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
4116                                 params->beacon_ies);
4117                 if (nla_put(msg, NL80211_ATTR_IE,
4118                             wpabuf_len(params->beacon_ies),
4119                             wpabuf_head(params->beacon_ies)))
4120                         goto fail;
4121         }
4122         if (params->proberesp_ies) {
4123                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
4124                                 params->proberesp_ies);
4125                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
4126                             wpabuf_len(params->proberesp_ies),
4127                             wpabuf_head(params->proberesp_ies)))
4128                         goto fail;
4129         }
4130         if (params->assocresp_ies) {
4131                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
4132                                 params->assocresp_ies);
4133                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
4134                             wpabuf_len(params->assocresp_ies),
4135                             wpabuf_head(params->assocresp_ies)))
4136                         goto fail;
4137         }
4138
4139         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
4140                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
4141                            params->ap_max_inactivity);
4142                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
4143                                 params->ap_max_inactivity))
4144                         goto fail;
4145         }
4146
4147         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4148         if (ret) {
4149                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4150                            ret, strerror(-ret));
4151         } else {
4152                 bss->beacon_set = 1;
4153                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4154                                 params->short_slot_time, params->ht_opmode,
4155                                 params->isolate, params->basic_rates);
4156                 if (beacon_set && params->freq &&
4157                     params->freq->bandwidth != bss->bandwidth) {
4158                         wpa_printf(MSG_DEBUG,
4159                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
4160                                    bss->ifname, bss->bandwidth,
4161                                    params->freq->bandwidth);
4162                         ret = nl80211_set_channel(bss, params->freq, 1);
4163                         if (ret) {
4164                                 wpa_printf(MSG_DEBUG,
4165                                            "nl80211: Frequency set failed: %d (%s)",
4166                                            ret, strerror(-ret));
4167                         } else {
4168                                 wpa_printf(MSG_DEBUG,
4169                                            "nl80211: Frequency set succeeded for ht2040 coex");
4170                                 bss->bandwidth = params->freq->bandwidth;
4171                         }
4172                 } else if (!beacon_set) {
4173                         /*
4174                          * cfg80211 updates the driver on frequence change in AP
4175                          * mode only at the point when beaconing is started, so
4176                          * set the initial value here.
4177                          */
4178                         bss->bandwidth = params->freq->bandwidth;
4179                 }
4180         }
4181         return ret;
4182 fail:
4183         nlmsg_free(msg);
4184         return -ENOBUFS;
4185 }
4186
4187
4188 static int nl80211_put_freq_params(struct nl_msg *msg,
4189                                    struct hostapd_freq_params *freq)
4190 {
4191         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
4192                 return -ENOBUFS;
4193
4194         if (freq->vht_enabled) {
4195                 enum nl80211_chan_width cw;
4196
4197                 switch (freq->bandwidth) {
4198                 case 20:
4199                         cw = NL80211_CHAN_WIDTH_20;
4200                         break;
4201                 case 40:
4202                         cw = NL80211_CHAN_WIDTH_40;
4203                         break;
4204                 case 80:
4205                         if (freq->center_freq2)
4206                                 cw = NL80211_CHAN_WIDTH_80P80;
4207                         else
4208                                 cw = NL80211_CHAN_WIDTH_80;
4209                         break;
4210                 case 160:
4211                         cw = NL80211_CHAN_WIDTH_160;
4212                         break;
4213                 default:
4214                         return -EINVAL;
4215                 }
4216
4217                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
4218                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
4219                                 freq->center_freq1) ||
4220                     (freq->center_freq2 &&
4221                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
4222                                  freq->center_freq2)))
4223                         return -ENOBUFS;
4224         } else if (freq->ht_enabled) {
4225                 enum nl80211_channel_type ct;
4226
4227                 switch (freq->sec_channel_offset) {
4228                 case -1:
4229                         ct = NL80211_CHAN_HT40MINUS;
4230                         break;
4231                 case 1:
4232                         ct = NL80211_CHAN_HT40PLUS;
4233                         break;
4234                 default:
4235                         ct = NL80211_CHAN_HT20;
4236                         break;
4237                 }
4238
4239                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
4240                         return -ENOBUFS;
4241         }
4242         return 0;
4243 }
4244
4245
4246 static int nl80211_set_channel(struct i802_bss *bss,
4247                                struct hostapd_freq_params *freq, int set_chan)
4248 {
4249         struct wpa_driver_nl80211_data *drv = bss->drv;
4250         struct nl_msg *msg;
4251         int ret;
4252
4253         wpa_printf(MSG_DEBUG,
4254                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
4255                    freq->freq, freq->ht_enabled, freq->vht_enabled,
4256                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
4257
4258         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
4259                               NL80211_CMD_SET_WIPHY);
4260         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
4261                 nlmsg_free(msg);
4262                 return -1;
4263         }
4264
4265         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4266         if (ret == 0) {
4267                 bss->freq = freq->freq;
4268                 return 0;
4269         }
4270         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4271                    "%d (%s)", freq->freq, ret, strerror(-ret));
4272         return -1;
4273 }
4274
4275
4276 static u32 sta_flags_nl80211(int flags)
4277 {
4278         u32 f = 0;
4279
4280         if (flags & WPA_STA_AUTHORIZED)
4281                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4282         if (flags & WPA_STA_WMM)
4283                 f |= BIT(NL80211_STA_FLAG_WME);
4284         if (flags & WPA_STA_SHORT_PREAMBLE)
4285                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4286         if (flags & WPA_STA_MFP)
4287                 f |= BIT(NL80211_STA_FLAG_MFP);
4288         if (flags & WPA_STA_TDLS_PEER)
4289                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4290         if (flags & WPA_STA_AUTHENTICATED)
4291                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4292
4293         return f;
4294 }
4295
4296
4297 #ifdef CONFIG_MESH
4298 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
4299 {
4300         switch (state) {
4301         case PLINK_LISTEN:
4302                 return NL80211_PLINK_LISTEN;
4303         case PLINK_OPEN_SENT:
4304                 return NL80211_PLINK_OPN_SNT;
4305         case PLINK_OPEN_RCVD:
4306                 return NL80211_PLINK_OPN_RCVD;
4307         case PLINK_CNF_RCVD:
4308                 return NL80211_PLINK_CNF_RCVD;
4309         case PLINK_ESTAB:
4310                 return NL80211_PLINK_ESTAB;
4311         case PLINK_HOLDING:
4312                 return NL80211_PLINK_HOLDING;
4313         case PLINK_BLOCKED:
4314                 return NL80211_PLINK_BLOCKED;
4315         default:
4316                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
4317                            state);
4318         }
4319         return -1;
4320 }
4321 #endif /* CONFIG_MESH */
4322
4323
4324 static int wpa_driver_nl80211_sta_add(void *priv,
4325                                       struct hostapd_sta_add_params *params)
4326 {
4327         struct i802_bss *bss = priv;
4328         struct wpa_driver_nl80211_data *drv = bss->drv;
4329         struct nl_msg *msg;
4330         struct nl80211_sta_flag_update upd;
4331         int ret = -ENOBUFS;
4332
4333         if ((params->flags & WPA_STA_TDLS_PEER) &&
4334             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4335                 return -EOPNOTSUPP;
4336
4337         msg = nlmsg_alloc();
4338         if (!msg)
4339                 return -ENOMEM;
4340
4341         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
4342                    params->set ? "Set" : "Add", MAC2STR(params->addr));
4343         if (!nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4344                          NL80211_CMD_NEW_STATION) ||
4345             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)) ||
4346             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
4347                 goto fail;
4348
4349         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
4350                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
4351                             params->supp_rates, params->supp_rates_len);
4352                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
4353                            params->capability);
4354                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
4355                             params->supp_rates_len, params->supp_rates) ||
4356                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
4357                                 params->capability))
4358                         goto fail;
4359
4360                 if (params->ht_capabilities) {
4361                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
4362                                     (u8 *) params->ht_capabilities,
4363                                     sizeof(*params->ht_capabilities));
4364                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
4365                                     sizeof(*params->ht_capabilities),
4366                                     params->ht_capabilities))
4367                                 goto fail;
4368                 }
4369
4370                 if (params->vht_capabilities) {
4371                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
4372                                     (u8 *) params->vht_capabilities,
4373                                     sizeof(*params->vht_capabilities));
4374                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
4375                                     sizeof(*params->vht_capabilities),
4376                                     params->vht_capabilities))
4377                                 goto fail;
4378                 }
4379
4380                 if (params->ext_capab) {
4381                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
4382                                     params->ext_capab, params->ext_capab_len);
4383                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
4384                                     params->ext_capab_len, params->ext_capab))
4385                                 goto fail;
4386                 }
4387         }
4388         if (!params->set) {
4389                 if (params->aid) {
4390                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
4391                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
4392                                 goto fail;
4393                 } else {
4394                         /*
4395                          * cfg80211 validates that AID is non-zero, so we have
4396                          * to make this a non-zero value for the TDLS case where
4397                          * a dummy STA entry is used for now.
4398                          */
4399                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
4400                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
4401                                 goto fail;
4402                 }
4403                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
4404                            params->listen_interval);
4405                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4406                                 params->listen_interval))
4407                         goto fail;
4408         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
4409                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
4410                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
4411                         goto fail;
4412         }
4413
4414         if (params->vht_opmode_enabled) {
4415                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
4416                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
4417                                params->vht_opmode))
4418                         goto fail;
4419         }
4420
4421         if (params->supp_channels) {
4422                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
4423                             params->supp_channels, params->supp_channels_len);
4424                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4425                             params->supp_channels_len, params->supp_channels))
4426                         goto fail;
4427         }
4428
4429         if (params->supp_oper_classes) {
4430                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
4431                             params->supp_oper_classes,
4432                             params->supp_oper_classes_len);
4433                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4434                             params->supp_oper_classes_len,
4435                             params->supp_oper_classes))
4436                         goto fail;
4437         }
4438
4439         os_memset(&upd, 0, sizeof(upd));
4440         upd.set = sta_flags_nl80211(params->flags);
4441         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4442         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
4443                    upd.set, upd.mask);
4444         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4445                 goto fail;
4446
4447 #ifdef CONFIG_MESH
4448         if (params->plink_state &&
4449             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
4450                        sta_plink_state_nl80211(params->plink_state)))
4451                 goto fail;
4452 #endif /* CONFIG_MESH */
4453
4454         if (params->flags & WPA_STA_WMM) {
4455                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4456
4457                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
4458                 if (!wme ||
4459                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4460                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
4461                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
4462                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4463                                WMM_QOSINFO_STA_SP_MASK))
4464                         goto fail;
4465                 nla_nest_end(msg, wme);
4466         }
4467
4468         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4469         msg = NULL;
4470         if (ret)
4471                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4472                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4473                            strerror(-ret));
4474         if (ret == -EEXIST)
4475                 ret = 0;
4476 fail:
4477         nlmsg_free(msg);
4478         return ret;
4479 }
4480
4481
4482 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4483 {
4484 #ifdef CONFIG_LIBNL3_ROUTE
4485         struct wpa_driver_nl80211_data *drv = bss->drv;
4486         struct rtnl_neigh *rn;
4487         struct nl_addr *nl_addr;
4488         int err;
4489
4490         rn = rtnl_neigh_alloc();
4491         if (!rn)
4492                 return;
4493
4494         rtnl_neigh_set_family(rn, AF_BRIDGE);
4495         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4496         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4497         if (!nl_addr) {
4498                 rtnl_neigh_put(rn);
4499                 return;
4500         }
4501         rtnl_neigh_set_lladdr(rn, nl_addr);
4502
4503         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4504         if (err < 0) {
4505                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4506                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4507                            bss->ifindex, nl_geterror(err));
4508         } else {
4509                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4510                            MACSTR, MAC2STR(addr));
4511         }
4512
4513         nl_addr_put(nl_addr);
4514         rtnl_neigh_put(rn);
4515 #endif /* CONFIG_LIBNL3_ROUTE */
4516 }
4517
4518
4519 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4520                                          int deauth, u16 reason_code)
4521 {
4522         struct wpa_driver_nl80211_data *drv = bss->drv;
4523         struct nl_msg *msg;
4524         int ret;
4525
4526         msg = nlmsg_alloc();
4527         if (!msg)
4528                 return -ENOMEM;
4529
4530         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION) ||
4531             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)) ||
4532             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
4533             (deauth == 0 &&
4534              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4535                         WLAN_FC_STYPE_DISASSOC)) ||
4536             (deauth == 1 &&
4537              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4538                         WLAN_FC_STYPE_DEAUTH)) ||
4539             (reason_code &&
4540              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
4541                 nlmsg_free(msg);
4542                 return -ENOBUFS;
4543         }
4544
4545         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4546         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4547                    " --> %d (%s)",
4548                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4549
4550         if (drv->rtnl_sk)
4551                 rtnl_neigh_delete_fdb_entry(bss, addr);
4552
4553         if (ret == -ENOENT)
4554                 return 0;
4555         return ret;
4556 }
4557
4558
4559 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4560 {
4561         struct nl_msg *msg;
4562         struct wpa_driver_nl80211_data *drv2;
4563
4564         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4565
4566         /* stop listening for EAPOL on this interface */
4567         dl_list_for_each(drv2, &drv->global->interfaces,
4568                          struct wpa_driver_nl80211_data, list)
4569                 del_ifidx(drv2, ifidx);
4570
4571         msg = nlmsg_alloc();
4572         if (!msg)
4573                 return;
4574
4575         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE) ||
4576             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifidx)) {
4577                 nlmsg_free(msg);
4578                 goto fail;
4579         }
4580
4581         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4582                 return;
4583 fail:
4584         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4585 }
4586
4587
4588 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4589 {
4590         switch (mode) {
4591         case NL80211_IFTYPE_ADHOC:
4592                 return "ADHOC";
4593         case NL80211_IFTYPE_STATION:
4594                 return "STATION";
4595         case NL80211_IFTYPE_AP:
4596                 return "AP";
4597         case NL80211_IFTYPE_AP_VLAN:
4598                 return "AP_VLAN";
4599         case NL80211_IFTYPE_WDS:
4600                 return "WDS";
4601         case NL80211_IFTYPE_MONITOR:
4602                 return "MONITOR";
4603         case NL80211_IFTYPE_MESH_POINT:
4604                 return "MESH_POINT";
4605         case NL80211_IFTYPE_P2P_CLIENT:
4606                 return "P2P_CLIENT";
4607         case NL80211_IFTYPE_P2P_GO:
4608                 return "P2P_GO";
4609         case NL80211_IFTYPE_P2P_DEVICE:
4610                 return "P2P_DEVICE";
4611         default:
4612                 return "unknown";
4613         }
4614 }
4615
4616
4617 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4618                                      const char *ifname,
4619                                      enum nl80211_iftype iftype,
4620                                      const u8 *addr, int wds,
4621                                      int (*handler)(struct nl_msg *, void *),
4622                                      void *arg)
4623 {
4624         struct nl_msg *msg;
4625         int ifidx;
4626         int ret = -ENOBUFS;
4627
4628         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4629                    iftype, nl80211_iftype_str(iftype));
4630
4631         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
4632         if (!msg ||
4633             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
4634             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
4635                 goto fail;
4636
4637         if (iftype == NL80211_IFTYPE_MONITOR) {
4638                 struct nlattr *flags;
4639
4640                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4641                 if (!flags ||
4642                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
4643                         goto fail;
4644
4645                 nla_nest_end(msg, flags);
4646         } else if (wds) {
4647                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4648                         goto fail;
4649         }
4650
4651         /*
4652          * Tell cfg80211 that the interface belongs to the socket that created
4653          * it, and the interface should be deleted when the socket is closed.
4654          */
4655         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4656                 goto fail;
4657
4658         ret = send_and_recv_msgs(drv, msg, handler, arg);
4659         msg = NULL;
4660         if (ret) {
4661         fail:
4662                 nlmsg_free(msg);
4663                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4664                            ifname, ret, strerror(-ret));
4665                 return ret;
4666         }
4667
4668         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4669                 return 0;
4670
4671         ifidx = if_nametoindex(ifname);
4672         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4673                    ifname, ifidx);
4674
4675         if (ifidx <= 0)
4676                 return -1;
4677
4678         /*
4679          * Some virtual interfaces need to process EAPOL packets and events on
4680          * the parent interface. This is used mainly with hostapd.
4681          */
4682         if (drv->hostapd ||
4683             iftype == NL80211_IFTYPE_AP_VLAN ||
4684             iftype == NL80211_IFTYPE_WDS ||
4685             iftype == NL80211_IFTYPE_MONITOR) {
4686                 /* start listening for EAPOL on this interface */
4687                 add_ifidx(drv, ifidx);
4688         }
4689
4690         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4691             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4692                 nl80211_remove_iface(drv, ifidx);
4693                 return -1;
4694         }
4695
4696         return ifidx;
4697 }
4698
4699
4700 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4701                          const char *ifname, enum nl80211_iftype iftype,
4702                          const u8 *addr, int wds,
4703                          int (*handler)(struct nl_msg *, void *),
4704                          void *arg, int use_existing)
4705 {
4706         int ret;
4707
4708         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4709                                         arg);
4710
4711         /* if error occurred and interface exists already */
4712         if (ret == -ENFILE && if_nametoindex(ifname)) {
4713                 if (use_existing) {
4714                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4715                                    ifname);
4716                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4717                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4718                                                addr) < 0 &&
4719                             (linux_set_iface_flags(drv->global->ioctl_sock,
4720                                                    ifname, 0) < 0 ||
4721                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4722                                                 addr) < 0 ||
4723                              linux_set_iface_flags(drv->global->ioctl_sock,
4724                                                    ifname, 1) < 0))
4725                                         return -1;
4726                         return -ENFILE;
4727                 }
4728                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4729
4730                 /* Try to remove the interface that was already there. */
4731                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4732
4733                 /* Try to create the interface again */
4734                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4735                                                 wds, handler, arg);
4736         }
4737
4738         if (ret >= 0 && is_p2p_net_interface(iftype))
4739                 nl80211_disable_11b_rates(drv, ret, 1);
4740
4741         return ret;
4742 }
4743
4744
4745 static int nl80211_setup_ap(struct i802_bss *bss)
4746 {
4747         struct wpa_driver_nl80211_data *drv = bss->drv;
4748
4749         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4750                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4751
4752         /*
4753          * Disable Probe Request reporting unless we need it in this way for
4754          * devices that include the AP SME, in the other case (unless using
4755          * monitor iface) we'll get it through the nl_mgmt socket instead.
4756          */
4757         if (!drv->device_ap_sme)
4758                 wpa_driver_nl80211_probe_req_report(bss, 0);
4759
4760         if (!drv->device_ap_sme && !drv->use_monitor)
4761                 if (nl80211_mgmt_subscribe_ap(bss))
4762                         return -1;
4763
4764         if (drv->device_ap_sme && !drv->use_monitor)
4765                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4766                         return -1;
4767
4768         if (!drv->device_ap_sme && drv->use_monitor &&
4769             nl80211_create_monitor_interface(drv) &&
4770             !drv->device_ap_sme)
4771                 return -1;
4772
4773         if (drv->device_ap_sme &&
4774             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4775                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4776                            "Probe Request frame reporting in AP mode");
4777                 /* Try to survive without this */
4778         }
4779
4780         return 0;
4781 }
4782
4783
4784 static void nl80211_teardown_ap(struct i802_bss *bss)
4785 {
4786         struct wpa_driver_nl80211_data *drv = bss->drv;
4787
4788         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4789                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4790         if (drv->device_ap_sme) {
4791                 wpa_driver_nl80211_probe_req_report(bss, 0);
4792                 if (!drv->use_monitor)
4793                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4794         } else if (drv->use_monitor)
4795                 nl80211_remove_monitor_interface(drv);
4796         else
4797                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4798
4799         bss->beacon_set = 0;
4800 }
4801
4802
4803 static int nl80211_send_eapol_data(struct i802_bss *bss,
4804                                    const u8 *addr, const u8 *data,
4805                                    size_t data_len)
4806 {
4807         struct sockaddr_ll ll;
4808         int ret;
4809
4810         if (bss->drv->eapol_tx_sock < 0) {
4811                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4812                 return -1;
4813         }
4814
4815         os_memset(&ll, 0, sizeof(ll));
4816         ll.sll_family = AF_PACKET;
4817         ll.sll_ifindex = bss->ifindex;
4818         ll.sll_protocol = htons(ETH_P_PAE);
4819         ll.sll_halen = ETH_ALEN;
4820         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4821         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4822                      (struct sockaddr *) &ll, sizeof(ll));
4823         if (ret < 0)
4824                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4825                            strerror(errno));
4826
4827         return ret;
4828 }
4829
4830
4831 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4832
4833 static int wpa_driver_nl80211_hapd_send_eapol(
4834         void *priv, const u8 *addr, const u8 *data,
4835         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4836 {
4837         struct i802_bss *bss = priv;
4838         struct wpa_driver_nl80211_data *drv = bss->drv;
4839         struct ieee80211_hdr *hdr;
4840         size_t len;
4841         u8 *pos;
4842         int res;
4843         int qos = flags & WPA_STA_WMM;
4844
4845         if (drv->device_ap_sme || !drv->use_monitor)
4846                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4847
4848         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4849                 data_len;
4850         hdr = os_zalloc(len);
4851         if (hdr == NULL) {
4852                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4853                            (unsigned long) len);
4854                 return -1;
4855         }
4856
4857         hdr->frame_control =
4858                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4859         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4860         if (encrypt)
4861                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4862         if (qos) {
4863                 hdr->frame_control |=
4864                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4865         }
4866
4867         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4868         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4869         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4870         pos = (u8 *) (hdr + 1);
4871
4872         if (qos) {
4873                 /* Set highest priority in QoS header */
4874                 pos[0] = 7;
4875                 pos[1] = 0;
4876                 pos += 2;
4877         }
4878
4879         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4880         pos += sizeof(rfc1042_header);
4881         WPA_PUT_BE16(pos, ETH_P_PAE);
4882         pos += 2;
4883         memcpy(pos, data, data_len);
4884
4885         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4886                                             0, 0, 0, 0);
4887         if (res < 0) {
4888                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4889                            "failed: %d (%s)",
4890                            (unsigned long) len, errno, strerror(errno));
4891         }
4892         os_free(hdr);
4893
4894         return res;
4895 }
4896
4897
4898 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4899                                             int total_flags,
4900                                             int flags_or, int flags_and)
4901 {
4902         struct i802_bss *bss = priv;
4903         struct wpa_driver_nl80211_data *drv = bss->drv;
4904         struct nl_msg *msg;
4905         struct nlattr *flags;
4906         struct nl80211_sta_flag_update upd;
4907
4908         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4909                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4910                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4911                    !!(total_flags & WPA_STA_AUTHORIZED));
4912
4913         msg = nlmsg_alloc();
4914         if (!msg)
4915                 return -ENOMEM;
4916
4917         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION) ||
4918             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
4919                         if_nametoindex(bss->ifname)) ||
4920             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4921                 goto fail;
4922
4923         /*
4924          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4925          * can be removed eventually.
4926          */
4927         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4928         if (!flags ||
4929             ((total_flags & WPA_STA_AUTHORIZED) &&
4930              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4931             ((total_flags & WPA_STA_WMM) &&
4932              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4933             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4934              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4935             ((total_flags & WPA_STA_MFP) &&
4936              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4937             ((total_flags & WPA_STA_TDLS_PEER) &&
4938              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4939                 goto fail;
4940
4941         nla_nest_end(msg, flags);
4942
4943         os_memset(&upd, 0, sizeof(upd));
4944         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4945         upd.set = sta_flags_nl80211(flags_or);
4946         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4947                 goto fail;
4948
4949         return send_and_recv_msgs(drv, msg, NULL, NULL);
4950 fail:
4951         nlmsg_free(msg);
4952         return -ENOBUFS;
4953 }
4954
4955
4956 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4957                                  struct wpa_driver_associate_params *params)
4958 {
4959         enum nl80211_iftype nlmode, old_mode;
4960
4961         if (params->p2p) {
4962                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4963                            "group (GO)");
4964                 nlmode = NL80211_IFTYPE_P2P_GO;
4965         } else
4966                 nlmode = NL80211_IFTYPE_AP;
4967
4968         old_mode = drv->nlmode;
4969         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4970                 nl80211_remove_monitor_interface(drv);
4971                 return -1;
4972         }
4973
4974         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4975                 if (old_mode != nlmode)
4976                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4977                 nl80211_remove_monitor_interface(drv);
4978                 return -1;
4979         }
4980
4981         return 0;
4982 }
4983
4984
4985 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
4986 {
4987         struct nl_msg *msg;
4988         int ret;
4989
4990         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4991         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4992         if (ret) {
4993                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4994                            "(%s)", ret, strerror(-ret));
4995         } else {
4996                 wpa_printf(MSG_DEBUG,
4997                            "nl80211: Leave IBSS request sent successfully");
4998         }
4999
5000         if (wpa_driver_nl80211_set_mode(drv->first_bss,
5001                                         NL80211_IFTYPE_STATION)) {
5002                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5003                            "station mode");
5004         }
5005
5006         return ret;
5007 }
5008
5009
5010 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5011                                    struct wpa_driver_associate_params *params)
5012 {
5013         struct nl_msg *msg;
5014         int ret = -1;
5015         int count = 0;
5016
5017         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5018
5019         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
5020                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5021                            "IBSS mode");
5022                 return -1;
5023         }
5024
5025 retry:
5026         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
5027             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5028                 goto fail;
5029
5030         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5031                           params->ssid, params->ssid_len);
5032         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
5033                 goto fail;
5034         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5035         drv->ssid_len = params->ssid_len;
5036
5037         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5038         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", params->freq.ht_enabled);
5039         wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
5040                    params->freq.sec_channel_offset);
5041         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", params->freq.vht_enabled);
5042         wpa_printf(MSG_DEBUG, "  * center_freq1=%d", params->freq.center_freq1);
5043         wpa_printf(MSG_DEBUG, "  * center_freq2=%d", params->freq.center_freq2);
5044         wpa_printf(MSG_DEBUG, "  * bandwidth=%d", params->freq.bandwidth);
5045         if (nl80211_put_freq_params(msg, &params->freq) < 0)
5046                 goto fail;
5047
5048         if (params->beacon_int > 0) {
5049                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", params->beacon_int);
5050                 if (nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
5051                                 params->beacon_int))
5052                         goto fail;
5053         }
5054
5055         ret = nl80211_set_conn_keys(params, msg);
5056         if (ret)
5057                 goto fail;
5058
5059         if (params->bssid && params->fixed_bssid) {
5060                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
5061                            MAC2STR(params->bssid));
5062                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
5063                         goto fail;
5064         }
5065
5066         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5067             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5068             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5069             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
5070                 wpa_printf(MSG_DEBUG, "  * control port");
5071                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
5072                         goto fail;
5073         }
5074
5075         if (params->wpa_ie) {
5076                 wpa_hexdump(MSG_DEBUG,
5077                             "  * Extra IEs for Beacon/Probe Response frames",
5078                             params->wpa_ie, params->wpa_ie_len);
5079                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5080                             params->wpa_ie))
5081                         goto fail;
5082         }
5083
5084         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5085         msg = NULL;
5086         if (ret) {
5087                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5088                            ret, strerror(-ret));
5089                 count++;
5090                 if (ret == -EALREADY && count == 1) {
5091                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5092                                    "forced leave");
5093                         nl80211_leave_ibss(drv);
5094                         nlmsg_free(msg);
5095                         goto retry;
5096                 }
5097         } else {
5098                 wpa_printf(MSG_DEBUG,
5099                            "nl80211: Join IBSS request sent successfully");
5100         }
5101
5102 fail:
5103         nlmsg_free(msg);
5104         return ret;
5105 }
5106
5107
5108 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
5109                                   struct wpa_driver_associate_params *params,
5110                                   struct nl_msg *msg)
5111 {
5112         if (params->bssid) {
5113                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5114                            MAC2STR(params->bssid));
5115                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
5116                         return -1;
5117         }
5118
5119         if (params->bssid_hint) {
5120                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
5121                            MAC2STR(params->bssid_hint));
5122                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
5123                             params->bssid_hint))
5124                         return -1;
5125         }
5126
5127         if (params->freq.freq) {
5128                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5129                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
5130                                 params->freq.freq))
5131                         return -1;
5132                 drv->assoc_freq = params->freq.freq;
5133         } else
5134                 drv->assoc_freq = 0;
5135
5136         if (params->freq_hint) {
5137                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
5138                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
5139                                 params->freq_hint))
5140                         return -1;
5141         }
5142
5143         if (params->bg_scan_period >= 0) {
5144                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
5145                            params->bg_scan_period);
5146                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
5147                                 params->bg_scan_period))
5148                         return -1;
5149         }
5150
5151         if (params->ssid) {
5152                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5153                                   params->ssid, params->ssid_len);
5154                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
5155                             params->ssid))
5156                         return -1;
5157                 if (params->ssid_len > sizeof(drv->ssid))
5158                         return -1;
5159                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5160                 drv->ssid_len = params->ssid_len;
5161         }
5162
5163         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
5164         if (params->wpa_ie &&
5165             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
5166                 return -1;
5167
5168         if (params->wpa_proto) {
5169                 enum nl80211_wpa_versions ver = 0;
5170
5171                 if (params->wpa_proto & WPA_PROTO_WPA)
5172                         ver |= NL80211_WPA_VERSION_1;
5173                 if (params->wpa_proto & WPA_PROTO_RSN)
5174                         ver |= NL80211_WPA_VERSION_2;
5175
5176                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
5177                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
5178                         return -1;
5179         }
5180
5181         if (params->pairwise_suite != WPA_CIPHER_NONE) {
5182                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
5183                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
5184                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
5185                                 cipher))
5186                         return -1;
5187         }
5188
5189         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
5190             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
5191                 /*
5192                  * This is likely to work even though many drivers do not
5193                  * advertise support for operations without GTK.
5194                  */
5195                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
5196         } else if (params->group_suite != WPA_CIPHER_NONE) {
5197                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
5198                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
5199                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
5200                         return -1;
5201         }
5202
5203         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5204             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5205             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
5206             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
5207             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
5208             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
5209             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5210             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5211             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
5212                 int mgmt = WLAN_AKM_SUITE_PSK;
5213
5214                 switch (params->key_mgmt_suite) {
5215                 case WPA_KEY_MGMT_CCKM:
5216                         mgmt = WLAN_AKM_SUITE_CCKM;
5217                         break;
5218                 case WPA_KEY_MGMT_IEEE8021X:
5219                         mgmt = WLAN_AKM_SUITE_8021X;
5220                         break;
5221                 case WPA_KEY_MGMT_FT_IEEE8021X:
5222                         mgmt = WLAN_AKM_SUITE_FT_8021X;
5223                         break;
5224                 case WPA_KEY_MGMT_FT_PSK:
5225                         mgmt = WLAN_AKM_SUITE_FT_PSK;
5226                         break;
5227                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
5228                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
5229                         break;
5230                 case WPA_KEY_MGMT_PSK_SHA256:
5231                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
5232                         break;
5233                 case WPA_KEY_MGMT_OSEN:
5234                         mgmt = WLAN_AKM_SUITE_OSEN;
5235                         break;
5236                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
5237                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
5238                         break;
5239                 case WPA_KEY_MGMT_PSK:
5240                 default:
5241                         mgmt = WLAN_AKM_SUITE_PSK;
5242                         break;
5243                 }
5244                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
5245                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
5246                         return -1;
5247         }
5248
5249         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
5250                 return -1;
5251
5252         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
5253             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
5254                 return -1;
5255
5256         if (params->rrm_used) {
5257                 u32 drv_rrm_flags = drv->capa.rrm_flags;
5258                 if (!(drv_rrm_flags &
5259                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
5260                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
5261                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
5262                         return -1;
5263         }
5264
5265         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
5266                 return -1;
5267
5268         if (params->htcaps && params->htcaps_mask) {
5269                 int sz = sizeof(struct ieee80211_ht_capabilities);
5270                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
5271                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
5272                             params->htcaps_mask, sz);
5273                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
5274                             params->htcaps) ||
5275                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
5276                             params->htcaps_mask))
5277                         return -1;
5278         }
5279
5280 #ifdef CONFIG_VHT_OVERRIDES
5281         if (params->disable_vht) {
5282                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
5283                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
5284                         return -1;
5285         }
5286
5287         if (params->vhtcaps && params->vhtcaps_mask) {
5288                 int sz = sizeof(struct ieee80211_vht_capabilities);
5289                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
5290                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
5291                             params->vhtcaps_mask, sz);
5292                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
5293                             params->vhtcaps) ||
5294                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
5295                             params->vhtcaps_mask))
5296                         return -1;
5297         }
5298 #endif /* CONFIG_VHT_OVERRIDES */
5299
5300         if (params->p2p)
5301                 wpa_printf(MSG_DEBUG, "  * P2P group");
5302
5303         return 0;
5304 }
5305
5306
5307 static int wpa_driver_nl80211_try_connect(
5308         struct wpa_driver_nl80211_data *drv,
5309         struct wpa_driver_associate_params *params)
5310 {
5311         struct nl_msg *msg;
5312         enum nl80211_auth_type type;
5313         int ret;
5314         int algs;
5315
5316         if (params->req_key_mgmt_offload && params->psk &&
5317             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5318              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5319              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
5320                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
5321                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
5322                 if (ret)
5323                         return ret;
5324         }
5325
5326         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5327         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
5328         if (!msg)
5329                 return -1;
5330
5331         ret = nl80211_connect_common(drv, params, msg);
5332         if (ret)
5333                 goto fail;
5334
5335         algs = 0;
5336         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5337                 algs++;
5338         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5339                 algs++;
5340         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5341                 algs++;
5342         if (algs > 1) {
5343                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
5344                            "selection");
5345                 goto skip_auth_type;
5346         }
5347
5348         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5349                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5350         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5351                 type = NL80211_AUTHTYPE_SHARED_KEY;
5352         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5353                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5354         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5355                 type = NL80211_AUTHTYPE_FT;
5356         else
5357                 goto fail;
5358
5359         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5360         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
5361                 goto fail;
5362
5363 skip_auth_type:
5364         ret = nl80211_set_conn_keys(params, msg);
5365         if (ret)
5366                 goto fail;
5367
5368         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5369         msg = NULL;
5370         if (ret) {
5371                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5372                            "(%s)", ret, strerror(-ret));
5373         } else {
5374                 wpa_printf(MSG_DEBUG,
5375                            "nl80211: Connect request send successfully");
5376         }
5377
5378 fail:
5379         nlmsg_free(msg);
5380         return ret;
5381
5382 }
5383
5384
5385 static int wpa_driver_nl80211_connect(
5386         struct wpa_driver_nl80211_data *drv,
5387         struct wpa_driver_associate_params *params)
5388 {
5389         int ret;
5390
5391         /* Store the connection attempted bssid for future use */
5392         if (params->bssid)
5393                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5394         else
5395                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5396
5397         ret = wpa_driver_nl80211_try_connect(drv, params);
5398         if (ret == -EALREADY) {
5399                 /*
5400                  * cfg80211 does not currently accept new connections if
5401                  * we are already connected. As a workaround, force
5402                  * disconnection and try again.
5403                  */
5404                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5405                            "disconnecting before reassociation "
5406                            "attempt");
5407                 if (wpa_driver_nl80211_disconnect(
5408                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5409                         return -1;
5410                 ret = wpa_driver_nl80211_try_connect(drv, params);
5411         }
5412         return ret;
5413 }
5414
5415
5416 static int wpa_driver_nl80211_associate(
5417         void *priv, struct wpa_driver_associate_params *params)
5418 {
5419         struct i802_bss *bss = priv;
5420         struct wpa_driver_nl80211_data *drv = bss->drv;
5421         int ret = -1;
5422         struct nl_msg *msg;
5423
5424         if (params->mode == IEEE80211_MODE_AP)
5425                 return wpa_driver_nl80211_ap(drv, params);
5426
5427         if (params->mode == IEEE80211_MODE_IBSS)
5428                 return wpa_driver_nl80211_ibss(drv, params);
5429
5430         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5431                 enum nl80211_iftype nlmode = params->p2p ?
5432                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5433
5434                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5435                         return -1;
5436                 return wpa_driver_nl80211_connect(drv, params);
5437         }
5438
5439         nl80211_mark_disconnected(drv);
5440
5441         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5442                    drv->ifindex);
5443         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
5444         if (!msg)
5445                 return -1;
5446
5447         ret = nl80211_connect_common(drv, params, msg);
5448         if (ret)
5449                 goto fail;
5450
5451         if (params->prev_bssid) {
5452                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
5453                            MAC2STR(params->prev_bssid));
5454                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5455                             params->prev_bssid))
5456                         goto fail;
5457         }
5458
5459         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5460         msg = NULL;
5461         if (ret) {
5462                 wpa_dbg(drv->ctx, MSG_DEBUG,
5463                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
5464                         ret, strerror(-ret));
5465                 nl80211_dump_scan(drv);
5466         } else {
5467                 wpa_printf(MSG_DEBUG,
5468                            "nl80211: Association request send successfully");
5469         }
5470
5471 fail:
5472         nlmsg_free(msg);
5473         return ret;
5474 }
5475
5476
5477 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5478                             int ifindex, enum nl80211_iftype mode)
5479 {
5480         struct nl_msg *msg;
5481         int ret = -ENOBUFS;
5482
5483         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5484                    ifindex, mode, nl80211_iftype_str(mode));
5485
5486         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
5487         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
5488                 goto fail;
5489
5490         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5491         msg = NULL;
5492         if (!ret)
5493                 return 0;
5494 fail:
5495         nlmsg_free(msg);
5496         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5497                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5498         return ret;
5499 }
5500
5501
5502 static int wpa_driver_nl80211_set_mode_impl(
5503                 struct i802_bss *bss,
5504                 enum nl80211_iftype nlmode,
5505                 struct hostapd_freq_params *desired_freq_params)
5506 {
5507         struct wpa_driver_nl80211_data *drv = bss->drv;
5508         int ret = -1;
5509         int i;
5510         int was_ap = is_ap_interface(drv->nlmode);
5511         int res;
5512         int mode_switch_res;
5513
5514         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5515         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5516                 mode_switch_res = 0;
5517
5518         if (mode_switch_res == 0) {
5519                 drv->nlmode = nlmode;
5520                 ret = 0;
5521                 goto done;
5522         }
5523
5524         if (mode_switch_res == -ENODEV)
5525                 return -1;
5526
5527         if (nlmode == drv->nlmode) {
5528                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5529                            "requested mode - ignore error");
5530                 ret = 0;
5531                 goto done; /* Already in the requested mode */
5532         }
5533
5534         /* mac80211 doesn't allow mode changes while the device is up, so
5535          * take the device down, try to set the mode again, and bring the
5536          * device back up.
5537          */
5538         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5539                    "interface down");
5540         for (i = 0; i < 10; i++) {
5541                 res = i802_set_iface_flags(bss, 0);
5542                 if (res == -EACCES || res == -ENODEV)
5543                         break;
5544                 if (res != 0) {
5545                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5546                                    "interface down");
5547                         os_sleep(0, 100000);
5548                         continue;
5549                 }
5550
5551                 /*
5552                  * Setting the mode will fail for some drivers if the phy is
5553                  * on a frequency that the mode is disallowed in.
5554                  */
5555                 if (desired_freq_params) {
5556                         res = i802_set_freq(bss, desired_freq_params);
5557                         if (res) {
5558                                 wpa_printf(MSG_DEBUG,
5559                                            "nl80211: Failed to set frequency on interface");
5560                         }
5561                 }
5562
5563                 /* Try to set the mode again while the interface is down */
5564                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5565                 if (mode_switch_res == -EBUSY) {
5566                         wpa_printf(MSG_DEBUG,
5567                                    "nl80211: Delaying mode set while interface going down");
5568                         os_sleep(0, 100000);
5569                         continue;
5570                 }
5571                 ret = mode_switch_res;
5572                 break;
5573         }
5574
5575         if (!ret) {
5576                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5577                            "interface is down");
5578                 drv->nlmode = nlmode;
5579                 drv->ignore_if_down_event = 1;
5580         }
5581
5582         /* Bring the interface back up */
5583         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5584         if (res != 0) {
5585                 wpa_printf(MSG_DEBUG,
5586                            "nl80211: Failed to set interface up after switching mode");
5587                 ret = -1;
5588         }
5589
5590 done:
5591         if (ret) {
5592                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5593                            "from %d failed", nlmode, drv->nlmode);
5594                 return ret;
5595         }
5596
5597         if (is_p2p_net_interface(nlmode))
5598                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5599         else if (drv->disabled_11b_rates)
5600                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5601
5602         if (is_ap_interface(nlmode)) {
5603                 nl80211_mgmt_unsubscribe(bss, "start AP");
5604                 /* Setup additional AP mode functionality if needed */
5605                 if (nl80211_setup_ap(bss))
5606                         return -1;
5607         } else if (was_ap) {
5608                 /* Remove additional AP mode functionality */
5609                 nl80211_teardown_ap(bss);
5610         } else {
5611                 nl80211_mgmt_unsubscribe(bss, "mode change");
5612         }
5613
5614         if (is_mesh_interface(nlmode) &&
5615             nl80211_mgmt_subscribe_mesh(bss))
5616                 return -1;
5617
5618         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5619             !is_mesh_interface(nlmode) &&
5620             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5621                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5622                            "frame processing - ignore for now");
5623
5624         return 0;
5625 }
5626
5627
5628 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5629                                 enum nl80211_iftype nlmode)
5630 {
5631         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5632 }
5633
5634
5635 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5636                                             struct hostapd_freq_params *freq)
5637 {
5638         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5639                                                 freq);
5640 }
5641
5642
5643 static int wpa_driver_nl80211_get_capa(void *priv,
5644                                        struct wpa_driver_capa *capa)
5645 {
5646         struct i802_bss *bss = priv;
5647         struct wpa_driver_nl80211_data *drv = bss->drv;
5648
5649         if (!drv->has_capability)
5650                 return -1;
5651         os_memcpy(capa, &drv->capa, sizeof(*capa));
5652         if (drv->extended_capa && drv->extended_capa_mask) {
5653                 capa->extended_capa = drv->extended_capa;
5654                 capa->extended_capa_mask = drv->extended_capa_mask;
5655                 capa->extended_capa_len = drv->extended_capa_len;
5656         }
5657
5658         return 0;
5659 }
5660
5661
5662 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5663 {
5664         struct i802_bss *bss = priv;
5665         struct wpa_driver_nl80211_data *drv = bss->drv;
5666
5667         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5668                    bss->ifname, drv->operstate, state,
5669                    state ? "UP" : "DORMANT");
5670         drv->operstate = state;
5671         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5672                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5673 }
5674
5675
5676 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5677 {
5678         struct i802_bss *bss = priv;
5679         struct wpa_driver_nl80211_data *drv = bss->drv;
5680         struct nl_msg *msg;
5681         struct nl80211_sta_flag_update upd;
5682         int ret;
5683
5684         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5685                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5686                 return 0;
5687         }
5688
5689         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5690                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5691
5692         msg = nlmsg_alloc();
5693         if (!msg)
5694                 return -ENOMEM;
5695
5696         os_memset(&upd, 0, sizeof(upd));
5697         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5698         if (authorized)
5699                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5700
5701         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION) ||
5702             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
5703                         if_nametoindex(bss->ifname)) ||
5704             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5705             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5706                 nlmsg_free(msg);
5707                 return -ENOBUFS;
5708         }
5709
5710         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5711         if (!ret)
5712                 return 0;
5713         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5714                    ret, strerror(-ret));
5715         return ret;
5716 }
5717
5718
5719 /* Set kernel driver on given frequency (MHz) */
5720 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5721 {
5722         struct i802_bss *bss = priv;
5723         return nl80211_set_channel(bss, freq, 0);
5724 }
5725
5726
5727 static inline int min_int(int a, int b)
5728 {
5729         if (a < b)
5730                 return a;
5731         return b;
5732 }
5733
5734
5735 static int get_key_handler(struct nl_msg *msg, void *arg)
5736 {
5737         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5738         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5739
5740         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5741                   genlmsg_attrlen(gnlh, 0), NULL);
5742
5743         /*
5744          * TODO: validate the key index and mac address!
5745          * Otherwise, there's a race condition as soon as
5746          * the kernel starts sending key notifications.
5747          */
5748
5749         if (tb[NL80211_ATTR_KEY_SEQ])
5750                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5751                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5752         return NL_SKIP;
5753 }
5754
5755
5756 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5757                            int idx, u8 *seq)
5758 {
5759         struct i802_bss *bss = priv;
5760         struct wpa_driver_nl80211_data *drv = bss->drv;
5761         struct nl_msg *msg;
5762
5763         msg = nlmsg_alloc();
5764         if (!msg)
5765                 return -ENOMEM;
5766
5767         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY) ||
5768             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5769             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx) ||
5770             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface))) {
5771                 nlmsg_free(msg);
5772                 return -ENOBUFS;
5773         }
5774
5775         memset(seq, 0, 6);
5776
5777         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5778 }
5779
5780
5781 static int i802_set_rts(void *priv, int rts)
5782 {
5783         struct i802_bss *bss = priv;
5784         struct wpa_driver_nl80211_data *drv = bss->drv;
5785         struct nl_msg *msg;
5786         int ret;
5787         u32 val;
5788
5789         if (rts >= 2347)
5790                 val = (u32) -1;
5791         else
5792                 val = rts;
5793
5794         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5795             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5796                 nlmsg_free(msg);
5797                 return -ENOBUFS;
5798         }
5799
5800         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5801         if (!ret)
5802                 return 0;
5803         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5804                    "%d (%s)", rts, ret, strerror(-ret));
5805         return ret;
5806 }
5807
5808
5809 static int i802_set_frag(void *priv, int frag)
5810 {
5811         struct i802_bss *bss = priv;
5812         struct wpa_driver_nl80211_data *drv = bss->drv;
5813         struct nl_msg *msg;
5814         int ret;
5815         u32 val;
5816
5817         if (frag >= 2346)
5818                 val = (u32) -1;
5819         else
5820                 val = frag;
5821
5822         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5823             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5824                 nlmsg_free(msg);
5825                 return -ENOBUFS;
5826         }
5827
5828         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5829         if (!ret)
5830                 return 0;
5831         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5832                    "%d: %d (%s)", frag, ret, strerror(-ret));
5833         return ret;
5834 }
5835
5836
5837 static int i802_flush(void *priv)
5838 {
5839         struct i802_bss *bss = priv;
5840         struct wpa_driver_nl80211_data *drv = bss->drv;
5841         struct nl_msg *msg;
5842         int res;
5843
5844         msg = nlmsg_alloc();
5845         if (!msg)
5846                 return -1;
5847
5848         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5849                    bss->ifname);
5850         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5851
5852         /*
5853          * XXX: FIX! this needs to flush all VLANs too
5854          */
5855         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX,
5856                         if_nametoindex(bss->ifname))) {
5857                 nlmsg_free(msg);
5858                 return -ENOBUFS;
5859         }
5860
5861         res = send_and_recv_msgs(drv, msg, NULL, NULL);
5862         if (res) {
5863                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5864                            "(%s)", res, strerror(-res));
5865         }
5866         return res;
5867 }
5868
5869
5870 static int get_sta_handler(struct nl_msg *msg, void *arg)
5871 {
5872         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5873         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5874         struct hostap_sta_driver_data *data = arg;
5875         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5876         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5877                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5878                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5879                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5880                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5881                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5882                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5883         };
5884
5885         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5886                   genlmsg_attrlen(gnlh, 0), NULL);
5887
5888         /*
5889          * TODO: validate the interface and mac address!
5890          * Otherwise, there's a race condition as soon as
5891          * the kernel starts sending station notifications.
5892          */
5893
5894         if (!tb[NL80211_ATTR_STA_INFO]) {
5895                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5896                 return NL_SKIP;
5897         }
5898         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5899                              tb[NL80211_ATTR_STA_INFO],
5900                              stats_policy)) {
5901                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5902                 return NL_SKIP;
5903         }
5904
5905         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5906                 data->inactive_msec =
5907                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5908         if (stats[NL80211_STA_INFO_RX_BYTES])
5909                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5910         if (stats[NL80211_STA_INFO_TX_BYTES])
5911                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5912         if (stats[NL80211_STA_INFO_RX_PACKETS])
5913                 data->rx_packets =
5914                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5915         if (stats[NL80211_STA_INFO_TX_PACKETS])
5916                 data->tx_packets =
5917                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5918         if (stats[NL80211_STA_INFO_TX_FAILED])
5919                 data->tx_retry_failed =
5920                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5921
5922         return NL_SKIP;
5923 }
5924
5925 static int i802_read_sta_data(struct i802_bss *bss,
5926                               struct hostap_sta_driver_data *data,
5927                               const u8 *addr)
5928 {
5929         struct wpa_driver_nl80211_data *drv = bss->drv;
5930         struct nl_msg *msg;
5931
5932         os_memset(data, 0, sizeof(*data));
5933         msg = nlmsg_alloc();
5934         if (!msg)
5935                 return -ENOMEM;
5936
5937         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION) ||
5938             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5939             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
5940                         if_nametoindex(bss->ifname))) {
5941                 nlmsg_free(msg);
5942                 return -ENOBUFS;
5943         }
5944
5945         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
5946 }
5947
5948
5949 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5950                                     int cw_min, int cw_max, int burst_time)
5951 {
5952         struct i802_bss *bss = priv;
5953         struct wpa_driver_nl80211_data *drv = bss->drv;
5954         struct nl_msg *msg;
5955         struct nlattr *txq, *params;
5956
5957         msg = nlmsg_alloc();
5958         if (!msg)
5959                 return -1;
5960
5961         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY) ||
5962             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)))
5963                 goto fail;
5964
5965         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5966         if (!txq)
5967                 goto fail;
5968
5969         /* We are only sending parameters for a single TXQ at a time */
5970         params = nla_nest_start(msg, 1);
5971         if (!params)
5972                 goto fail;
5973
5974         switch (queue) {
5975         case 0:
5976                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5977                         goto fail;
5978                 break;
5979         case 1:
5980                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5981                         goto fail;
5982                 break;
5983         case 2:
5984                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5985                         goto fail;
5986                 break;
5987         case 3:
5988                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5989                         goto fail;
5990                 break;
5991         }
5992         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5993          * 32 usec, so need to convert the value here. */
5994         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5995                         (burst_time * 100 + 16) / 32) ||
5996             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5997             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5998             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5999                 goto fail;
6000
6001         nla_nest_end(msg, params);
6002
6003         nla_nest_end(msg, txq);
6004
6005         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6006                 return 0;
6007         msg = NULL;
6008 fail:
6009         nlmsg_free(msg);
6010         return -1;
6011 }
6012
6013
6014 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
6015                              const char *ifname, int vlan_id)
6016 {
6017         struct wpa_driver_nl80211_data *drv = bss->drv;
6018         struct nl_msg *msg;
6019         int ret;
6020
6021         msg = nlmsg_alloc();
6022         if (!msg)
6023                 return -ENOMEM;
6024
6025         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
6026                    ", ifname=%s[%d], vlan_id=%d)",
6027                    bss->ifname, if_nametoindex(bss->ifname),
6028                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
6029         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION) ||
6030             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
6031                         if_nametoindex(bss->ifname)) ||
6032             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
6033             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
6034                 nlmsg_free(msg);
6035                 return -ENOBUFS;
6036         }
6037
6038         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6039         if (ret < 0) {
6040                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6041                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6042                            MAC2STR(addr), ifname, vlan_id, ret,
6043                            strerror(-ret));
6044         }
6045         return ret;
6046 }
6047
6048
6049 static int i802_get_inact_sec(void *priv, const u8 *addr)
6050 {
6051         struct hostap_sta_driver_data data;
6052         int ret;
6053
6054         data.inactive_msec = (unsigned long) -1;
6055         ret = i802_read_sta_data(priv, &data, addr);
6056         if (ret || data.inactive_msec == (unsigned long) -1)
6057                 return -1;
6058         return data.inactive_msec / 1000;
6059 }
6060
6061
6062 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6063 {
6064 #if 0
6065         /* TODO */
6066 #endif
6067         return 0;
6068 }
6069
6070
6071 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6072                            int reason)
6073 {
6074         struct i802_bss *bss = priv;
6075         struct wpa_driver_nl80211_data *drv = bss->drv;
6076         struct ieee80211_mgmt mgmt;
6077
6078         if (is_mesh_interface(drv->nlmode))
6079                 return -1;
6080
6081         if (drv->device_ap_sme)
6082                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
6083
6084         memset(&mgmt, 0, sizeof(mgmt));
6085         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6086                                           WLAN_FC_STYPE_DEAUTH);
6087         memcpy(mgmt.da, addr, ETH_ALEN);
6088         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6089         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6090         mgmt.u.deauth.reason_code = host_to_le16(reason);
6091         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6092                                             IEEE80211_HDRLEN +
6093                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
6094                                             0);
6095 }
6096
6097
6098 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6099                              int reason)
6100 {
6101         struct i802_bss *bss = priv;
6102         struct wpa_driver_nl80211_data *drv = bss->drv;
6103         struct ieee80211_mgmt mgmt;
6104
6105         if (is_mesh_interface(drv->nlmode))
6106                 return -1;
6107
6108         if (drv->device_ap_sme)
6109                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
6110
6111         memset(&mgmt, 0, sizeof(mgmt));
6112         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6113                                           WLAN_FC_STYPE_DISASSOC);
6114         memcpy(mgmt.da, addr, ETH_ALEN);
6115         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6116         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6117         mgmt.u.disassoc.reason_code = host_to_le16(reason);
6118         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6119                                             IEEE80211_HDRLEN +
6120                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
6121                                             0);
6122 }
6123
6124
6125 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
6126 {
6127         char buf[200], *pos, *end;
6128         int i, res;
6129
6130         pos = buf;
6131         end = pos + sizeof(buf);
6132
6133         for (i = 0; i < drv->num_if_indices; i++) {
6134                 if (!drv->if_indices[i])
6135                         continue;
6136                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
6137                 if (res < 0 || res >= end - pos)
6138                         break;
6139                 pos += res;
6140         }
6141         *pos = '\0';
6142
6143         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
6144                    drv->num_if_indices, buf);
6145 }
6146
6147
6148 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6149 {
6150         int i;
6151         int *old;
6152
6153         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6154                    ifidx);
6155         if (have_ifidx(drv, ifidx)) {
6156                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
6157                            ifidx);
6158                 return;
6159         }
6160         for (i = 0; i < drv->num_if_indices; i++) {
6161                 if (drv->if_indices[i] == 0) {
6162                         drv->if_indices[i] = ifidx;
6163                         dump_ifidx(drv);
6164                         return;
6165                 }
6166         }
6167
6168         if (drv->if_indices != drv->default_if_indices)
6169                 old = drv->if_indices;
6170         else
6171                 old = NULL;
6172
6173         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
6174                                            sizeof(int));
6175         if (!drv->if_indices) {
6176                 if (!old)
6177                         drv->if_indices = drv->default_if_indices;
6178                 else
6179                         drv->if_indices = old;
6180                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6181                            "interfaces");
6182                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6183                 return;
6184         } else if (!old)
6185                 os_memcpy(drv->if_indices, drv->default_if_indices,
6186                           sizeof(drv->default_if_indices));
6187         drv->if_indices[drv->num_if_indices] = ifidx;
6188         drv->num_if_indices++;
6189         dump_ifidx(drv);
6190 }
6191
6192
6193 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6194 {
6195         int i;
6196
6197         for (i = 0; i < drv->num_if_indices; i++) {
6198                 if (drv->if_indices[i] == ifidx) {
6199                         drv->if_indices[i] = 0;
6200                         break;
6201                 }
6202         }
6203         dump_ifidx(drv);
6204 }
6205
6206
6207 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6208 {
6209         int i;
6210
6211         for (i = 0; i < drv->num_if_indices; i++)
6212                 if (drv->if_indices[i] == ifidx)
6213                         return 1;
6214
6215         return 0;
6216 }
6217
6218
6219 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6220                             const char *bridge_ifname, char *ifname_wds)
6221 {
6222         struct i802_bss *bss = priv;
6223         struct wpa_driver_nl80211_data *drv = bss->drv;
6224         char name[IFNAMSIZ + 1];
6225
6226         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6227         if (ifname_wds)
6228                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
6229
6230         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6231                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6232         if (val) {
6233                 if (!if_nametoindex(name)) {
6234                         if (nl80211_create_iface(drv, name,
6235                                                  NL80211_IFTYPE_AP_VLAN,
6236                                                  bss->addr, 1, NULL, NULL, 0) <
6237                             0)
6238                                 return -1;
6239                         if (bridge_ifname &&
6240                             linux_br_add_if(drv->global->ioctl_sock,
6241                                             bridge_ifname, name) < 0)
6242                                 return -1;
6243                 }
6244                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
6245                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
6246                                    "interface %s up", name);
6247                 }
6248                 return i802_set_sta_vlan(priv, addr, name, 0);
6249         } else {
6250                 if (bridge_ifname)
6251                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
6252                                         name);
6253
6254                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6255                 nl80211_remove_iface(drv, if_nametoindex(name));
6256                 return 0;
6257         }
6258 }
6259
6260
6261 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6262 {
6263         struct wpa_driver_nl80211_data *drv = eloop_ctx;
6264         struct sockaddr_ll lladdr;
6265         unsigned char buf[3000];
6266         int len;
6267         socklen_t fromlen = sizeof(lladdr);
6268
6269         len = recvfrom(sock, buf, sizeof(buf), 0,
6270                        (struct sockaddr *)&lladdr, &fromlen);
6271         if (len < 0) {
6272                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
6273                            strerror(errno));
6274                 return;
6275         }
6276
6277         if (have_ifidx(drv, lladdr.sll_ifindex))
6278                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6279 }
6280
6281
6282 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6283                              struct i802_bss *bss,
6284                              const char *brname, const char *ifname)
6285 {
6286         int br_ifindex;
6287         char in_br[IFNAMSIZ];
6288
6289         os_strlcpy(bss->brname, brname, IFNAMSIZ);
6290         br_ifindex = if_nametoindex(brname);
6291         if (br_ifindex == 0) {
6292                 /*
6293                  * Bridge was configured, but the bridge device does
6294                  * not exist. Try to add it now.
6295                  */
6296                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6297                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6298                                    "bridge interface %s: %s",
6299                                    brname, strerror(errno));
6300                         return -1;
6301                 }
6302                 bss->added_bridge = 1;
6303                 br_ifindex = if_nametoindex(brname);
6304                 add_ifidx(drv, br_ifindex);
6305         }
6306         bss->br_ifindex = br_ifindex;
6307
6308         if (linux_br_get(in_br, ifname) == 0) {
6309                 if (os_strcmp(in_br, brname) == 0)
6310                         return 0; /* already in the bridge */
6311
6312                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6313                            "bridge %s", ifname, in_br);
6314                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6315                     0) {
6316                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
6317                                    "remove interface %s from bridge "
6318                                    "%s: %s",
6319                                    ifname, brname, strerror(errno));
6320                         return -1;
6321                 }
6322         }
6323
6324         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6325                    ifname, brname);
6326         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6327                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6328                            "into bridge %s: %s",
6329                            ifname, brname, strerror(errno));
6330                 return -1;
6331         }
6332         bss->added_if_into_bridge = 1;
6333
6334         return 0;
6335 }
6336
6337
6338 static void *i802_init(struct hostapd_data *hapd,
6339                        struct wpa_init_params *params)
6340 {
6341         struct wpa_driver_nl80211_data *drv;
6342         struct i802_bss *bss;
6343         size_t i;
6344         char brname[IFNAMSIZ];
6345         int ifindex, br_ifindex;
6346         int br_added = 0;
6347
6348         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6349                                           params->global_priv, 1,
6350                                           params->bssid, params->driver_params);
6351         if (bss == NULL)
6352                 return NULL;
6353
6354         drv = bss->drv;
6355
6356         if (linux_br_get(brname, params->ifname) == 0) {
6357                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6358                            params->ifname, brname);
6359                 br_ifindex = if_nametoindex(brname);
6360                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6361         } else {
6362                 brname[0] = '\0';
6363                 br_ifindex = 0;
6364         }
6365         bss->br_ifindex = br_ifindex;
6366
6367         for (i = 0; i < params->num_bridge; i++) {
6368                 if (params->bridge[i]) {
6369                         ifindex = if_nametoindex(params->bridge[i]);
6370                         if (ifindex)
6371                                 add_ifidx(drv, ifindex);
6372                         if (ifindex == br_ifindex)
6373                                 br_added = 1;
6374                 }
6375         }
6376         if (!br_added && br_ifindex &&
6377             (params->num_bridge == 0 || !params->bridge[0]))
6378                 add_ifidx(drv, br_ifindex);
6379
6380         /* start listening for EAPOL on the default AP interface */
6381         add_ifidx(drv, drv->ifindex);
6382
6383         if (params->num_bridge && params->bridge[0] &&
6384             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6385                 goto failed;
6386
6387 #ifdef CONFIG_LIBNL3_ROUTE
6388         if (bss->added_if_into_bridge) {
6389                 drv->rtnl_sk = nl_socket_alloc();
6390                 if (drv->rtnl_sk == NULL) {
6391                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6392                         goto failed;
6393                 }
6394
6395                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6396                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6397                                    strerror(errno));
6398                         goto failed;
6399                 }
6400         }
6401 #endif /* CONFIG_LIBNL3_ROUTE */
6402
6403         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6404         if (drv->eapol_sock < 0) {
6405                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6406                            strerror(errno));
6407                 goto failed;
6408         }
6409
6410         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6411         {
6412                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6413                 goto failed;
6414         }
6415
6416         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6417                                params->own_addr))
6418                 goto failed;
6419         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6420
6421         memcpy(bss->addr, params->own_addr, ETH_ALEN);
6422
6423         return bss;
6424
6425 failed:
6426         wpa_driver_nl80211_deinit(bss);
6427         return NULL;
6428 }
6429
6430
6431 static void i802_deinit(void *priv)
6432 {
6433         struct i802_bss *bss = priv;
6434         wpa_driver_nl80211_deinit(bss);
6435 }
6436
6437
6438 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6439         enum wpa_driver_if_type type)
6440 {
6441         switch (type) {
6442         case WPA_IF_STATION:
6443                 return NL80211_IFTYPE_STATION;
6444         case WPA_IF_P2P_CLIENT:
6445         case WPA_IF_P2P_GROUP:
6446                 return NL80211_IFTYPE_P2P_CLIENT;
6447         case WPA_IF_AP_VLAN:
6448                 return NL80211_IFTYPE_AP_VLAN;
6449         case WPA_IF_AP_BSS:
6450                 return NL80211_IFTYPE_AP;
6451         case WPA_IF_P2P_GO:
6452                 return NL80211_IFTYPE_P2P_GO;
6453         case WPA_IF_P2P_DEVICE:
6454                 return NL80211_IFTYPE_P2P_DEVICE;
6455         }
6456         return -1;
6457 }
6458
6459
6460 #ifdef CONFIG_P2P
6461
6462 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6463 {
6464         struct wpa_driver_nl80211_data *drv;
6465         dl_list_for_each(drv, &global->interfaces,
6466                          struct wpa_driver_nl80211_data, list) {
6467                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6468                         return 1;
6469         }
6470         return 0;
6471 }
6472
6473
6474 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6475                                       u8 *new_addr)
6476 {
6477         unsigned int idx;
6478
6479         if (!drv->global)
6480                 return -1;
6481
6482         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6483         for (idx = 0; idx < 64; idx++) {
6484                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6485                 new_addr[0] ^= idx << 2;
6486                 if (!nl80211_addr_in_use(drv->global, new_addr))
6487                         break;
6488         }
6489         if (idx == 64)
6490                 return -1;
6491
6492         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6493                    MACSTR, MAC2STR(new_addr));
6494
6495         return 0;
6496 }
6497
6498 #endif /* CONFIG_P2P */
6499
6500
6501 struct wdev_info {
6502         u64 wdev_id;
6503         int wdev_id_set;
6504         u8 macaddr[ETH_ALEN];
6505 };
6506
6507 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6508 {
6509         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6510         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6511         struct wdev_info *wi = arg;
6512
6513         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6514                   genlmsg_attrlen(gnlh, 0), NULL);
6515         if (tb[NL80211_ATTR_WDEV]) {
6516                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6517                 wi->wdev_id_set = 1;
6518         }
6519
6520         if (tb[NL80211_ATTR_MAC])
6521                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6522                           ETH_ALEN);
6523
6524         return NL_SKIP;
6525 }
6526
6527
6528 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6529                                      const char *ifname, const u8 *addr,
6530                                      void *bss_ctx, void **drv_priv,
6531                                      char *force_ifname, u8 *if_addr,
6532                                      const char *bridge, int use_existing)
6533 {
6534         enum nl80211_iftype nlmode;
6535         struct i802_bss *bss = priv;
6536         struct wpa_driver_nl80211_data *drv = bss->drv;
6537         int ifidx;
6538         int added = 1;
6539
6540         if (addr)
6541                 os_memcpy(if_addr, addr, ETH_ALEN);
6542         nlmode = wpa_driver_nl80211_if_type(type);
6543         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6544                 struct wdev_info p2pdev_info;
6545
6546                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6547                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6548                                              0, nl80211_wdev_handler,
6549                                              &p2pdev_info, use_existing);
6550                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6551                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6552                                    ifname);
6553                         return -1;
6554                 }
6555
6556                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6557                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6558                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6559                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6560                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6561                            ifname,
6562                            (long long unsigned int) p2pdev_info.wdev_id);
6563         } else {
6564                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6565                                              0, NULL, NULL, use_existing);
6566                 if (use_existing && ifidx == -ENFILE) {
6567                         added = 0;
6568                         ifidx = if_nametoindex(ifname);
6569                 } else if (ifidx < 0) {
6570                         return -1;
6571                 }
6572         }
6573
6574         if (!addr) {
6575                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
6576                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6577                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6578                                             bss->ifname, if_addr) < 0) {
6579                         if (added)
6580                                 nl80211_remove_iface(drv, ifidx);
6581                         return -1;
6582                 }
6583         }
6584
6585 #ifdef CONFIG_P2P
6586         if (!addr &&
6587             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6588              type == WPA_IF_P2P_GO)) {
6589                 /* Enforce unique P2P Interface Address */
6590                 u8 new_addr[ETH_ALEN];
6591
6592                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6593                                        new_addr) < 0) {
6594                         if (added)
6595                                 nl80211_remove_iface(drv, ifidx);
6596                         return -1;
6597                 }
6598                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6599                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6600                                    "for P2P group interface");
6601                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6602                                 if (added)
6603                                         nl80211_remove_iface(drv, ifidx);
6604                                 return -1;
6605                         }
6606                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6607                                                new_addr) < 0) {
6608                                 if (added)
6609                                         nl80211_remove_iface(drv, ifidx);
6610                                 return -1;
6611                         }
6612                 }
6613                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6614         }
6615 #endif /* CONFIG_P2P */
6616
6617         if (type == WPA_IF_AP_BSS) {
6618                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6619                 if (new_bss == NULL) {
6620                         if (added)
6621                                 nl80211_remove_iface(drv, ifidx);
6622                         return -1;
6623                 }
6624
6625                 if (bridge &&
6626                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6627                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6628                                    "interface %s to a bridge %s",
6629                                    ifname, bridge);
6630                         if (added)
6631                                 nl80211_remove_iface(drv, ifidx);
6632                         os_free(new_bss);
6633                         return -1;
6634                 }
6635
6636                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6637                 {
6638                         if (added)
6639                                 nl80211_remove_iface(drv, ifidx);
6640                         os_free(new_bss);
6641                         return -1;
6642                 }
6643                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6644                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6645                 new_bss->ifindex = ifidx;
6646                 new_bss->drv = drv;
6647                 new_bss->next = drv->first_bss->next;
6648                 new_bss->freq = drv->first_bss->freq;
6649                 new_bss->ctx = bss_ctx;
6650                 new_bss->added_if = added;
6651                 drv->first_bss->next = new_bss;
6652                 if (drv_priv)
6653                         *drv_priv = new_bss;
6654                 nl80211_init_bss(new_bss);
6655
6656                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6657                 if (nl80211_setup_ap(new_bss))
6658                         return -1;
6659         }
6660
6661         if (drv->global)
6662                 drv->global->if_add_ifindex = ifidx;
6663
6664         /*
6665          * Some virtual interfaces need to process EAPOL packets and events on
6666          * the parent interface. This is used mainly with hostapd.
6667          */
6668         if (ifidx > 0 &&
6669             (drv->hostapd ||
6670              nlmode == NL80211_IFTYPE_AP_VLAN ||
6671              nlmode == NL80211_IFTYPE_WDS ||
6672              nlmode == NL80211_IFTYPE_MONITOR))
6673                 add_ifidx(drv, ifidx);
6674
6675         return 0;
6676 }
6677
6678
6679 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6680                                         enum wpa_driver_if_type type,
6681                                         const char *ifname)
6682 {
6683         struct wpa_driver_nl80211_data *drv = bss->drv;
6684         int ifindex = if_nametoindex(ifname);
6685
6686         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6687                    __func__, type, ifname, ifindex, bss->added_if);
6688         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6689                 nl80211_remove_iface(drv, ifindex);
6690         else if (ifindex > 0 && !bss->added_if) {
6691                 struct wpa_driver_nl80211_data *drv2;
6692                 dl_list_for_each(drv2, &drv->global->interfaces,
6693                                  struct wpa_driver_nl80211_data, list)
6694                         del_ifidx(drv2, ifindex);
6695         }
6696
6697         if (type != WPA_IF_AP_BSS)
6698                 return 0;
6699
6700         if (bss->added_if_into_bridge) {
6701                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6702                                     bss->ifname) < 0)
6703                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6704                                    "interface %s from bridge %s: %s",
6705                                    bss->ifname, bss->brname, strerror(errno));
6706         }
6707         if (bss->added_bridge) {
6708                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6709                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6710                                    "bridge %s: %s",
6711                                    bss->brname, strerror(errno));
6712         }
6713
6714         if (bss != drv->first_bss) {
6715                 struct i802_bss *tbss;
6716
6717                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6718                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6719                         if (tbss->next == bss) {
6720                                 tbss->next = bss->next;
6721                                 /* Unsubscribe management frames */
6722                                 nl80211_teardown_ap(bss);
6723                                 nl80211_destroy_bss(bss);
6724                                 if (!bss->added_if)
6725                                         i802_set_iface_flags(bss, 0);
6726                                 os_free(bss);
6727                                 bss = NULL;
6728                                 break;
6729                         }
6730                 }
6731                 if (bss)
6732                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6733                                    "BSS %p in the list", __func__, bss);
6734         } else {
6735                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6736                 nl80211_teardown_ap(bss);
6737                 if (!bss->added_if && !drv->first_bss->next)
6738                         wpa_driver_nl80211_del_beacon(drv);
6739                 nl80211_destroy_bss(bss);
6740                 if (!bss->added_if)
6741                         i802_set_iface_flags(bss, 0);
6742                 if (drv->first_bss->next) {
6743                         drv->first_bss = drv->first_bss->next;
6744                         drv->ctx = drv->first_bss->ctx;
6745                         os_free(bss);
6746                 } else {
6747                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6748                 }
6749         }
6750
6751         return 0;
6752 }
6753
6754
6755 static int cookie_handler(struct nl_msg *msg, void *arg)
6756 {
6757         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6758         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6759         u64 *cookie = arg;
6760         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6761                   genlmsg_attrlen(gnlh, 0), NULL);
6762         if (tb[NL80211_ATTR_COOKIE])
6763                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6764         return NL_SKIP;
6765 }
6766
6767
6768 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6769                                   unsigned int freq, unsigned int wait,
6770                                   const u8 *buf, size_t buf_len,
6771                                   u64 *cookie_out, int no_cck, int no_ack,
6772                                   int offchanok)
6773 {
6774         struct wpa_driver_nl80211_data *drv = bss->drv;
6775         struct nl_msg *msg;
6776         u64 cookie;
6777         int ret = -1;
6778
6779         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6780                    "no_ack=%d offchanok=%d",
6781                    freq, wait, no_cck, no_ack, offchanok);
6782         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6783
6784         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6785             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6786             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6787             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6788                            drv->test_use_roc_tx) &&
6789              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6790             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6791             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6792             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6793                 goto fail;
6794
6795         cookie = 0;
6796         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6797         msg = NULL;
6798         if (ret) {
6799                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6800                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6801                            freq, wait);
6802         } else {
6803                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6804                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6805                            (long long unsigned int) cookie);
6806
6807                 if (cookie_out)
6808                         *cookie_out = no_ack ? (u64) -1 : cookie;
6809         }
6810
6811 fail:
6812         nlmsg_free(msg);
6813         return ret;
6814 }
6815
6816
6817 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6818                                           unsigned int freq,
6819                                           unsigned int wait_time,
6820                                           const u8 *dst, const u8 *src,
6821                                           const u8 *bssid,
6822                                           const u8 *data, size_t data_len,
6823                                           int no_cck)
6824 {
6825         struct wpa_driver_nl80211_data *drv = bss->drv;
6826         int ret = -1;
6827         u8 *buf;
6828         struct ieee80211_hdr *hdr;
6829
6830         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6831                    "freq=%u MHz wait=%d ms no_cck=%d)",
6832                    drv->ifindex, freq, wait_time, no_cck);
6833
6834         buf = os_zalloc(24 + data_len);
6835         if (buf == NULL)
6836                 return ret;
6837         os_memcpy(buf + 24, data, data_len);
6838         hdr = (struct ieee80211_hdr *) buf;
6839         hdr->frame_control =
6840                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6841         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6842         os_memcpy(hdr->addr2, src, ETH_ALEN);
6843         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6844
6845         if (is_ap_interface(drv->nlmode) &&
6846             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6847              (int) freq == bss->freq || drv->device_ap_sme ||
6848              !drv->use_monitor))
6849                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6850                                                    0, freq, no_cck, 1,
6851                                                    wait_time);
6852         else
6853                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6854                                              24 + data_len,
6855                                              &drv->send_action_cookie,
6856                                              no_cck, 0, 1);
6857
6858         os_free(buf);
6859         return ret;
6860 }
6861
6862
6863 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6864 {
6865         struct i802_bss *bss = priv;
6866         struct wpa_driver_nl80211_data *drv = bss->drv;
6867         struct nl_msg *msg;
6868         int ret;
6869
6870         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6871                    (long long unsigned int) drv->send_action_cookie);
6872         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6873             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6874                 nlmsg_free(msg);
6875                 return;
6876         }
6877
6878         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6879         if (ret)
6880                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6881                            "(%s)", ret, strerror(-ret));
6882 }
6883
6884
6885 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6886                                                 unsigned int duration)
6887 {
6888         struct i802_bss *bss = priv;
6889         struct wpa_driver_nl80211_data *drv = bss->drv;
6890         struct nl_msg *msg;
6891         int ret;
6892         u64 cookie;
6893
6894         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6895             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6896             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6897                 nlmsg_free(msg);
6898                 return -1;
6899         }
6900
6901         cookie = 0;
6902         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6903         if (ret == 0) {
6904                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6905                            "0x%llx for freq=%u MHz duration=%u",
6906                            (long long unsigned int) cookie, freq, duration);
6907                 drv->remain_on_chan_cookie = cookie;
6908                 drv->pending_remain_on_chan = 1;
6909                 return 0;
6910         }
6911         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6912                    "(freq=%d duration=%u): %d (%s)",
6913                    freq, duration, ret, strerror(-ret));
6914         return -1;
6915 }
6916
6917
6918 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6919 {
6920         struct i802_bss *bss = priv;
6921         struct wpa_driver_nl80211_data *drv = bss->drv;
6922         struct nl_msg *msg;
6923         int ret;
6924
6925         if (!drv->pending_remain_on_chan) {
6926                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6927                            "to cancel");
6928                 return -1;
6929         }
6930
6931         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6932                    "0x%llx",
6933                    (long long unsigned int) drv->remain_on_chan_cookie);
6934
6935         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6936         if (!msg ||
6937             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6938                 nlmsg_free(msg);
6939                 return -1;
6940         }
6941
6942         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6943         if (ret == 0)
6944                 return 0;
6945         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6946                    "%d (%s)", ret, strerror(-ret));
6947         return -1;
6948 }
6949
6950
6951 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6952 {
6953         struct wpa_driver_nl80211_data *drv = bss->drv;
6954
6955         if (!report) {
6956                 if (bss->nl_preq && drv->device_ap_sme &&
6957                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6958                     !bss->static_ap) {
6959                         /*
6960                          * Do not disable Probe Request reporting that was
6961                          * enabled in nl80211_setup_ap().
6962                          */
6963                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6964                                    "Probe Request reporting nl_preq=%p while "
6965                                    "in AP mode", bss->nl_preq);
6966                 } else if (bss->nl_preq) {
6967                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6968                                    "reporting nl_preq=%p", bss->nl_preq);
6969                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6970                 }
6971                 return 0;
6972         }
6973
6974         if (bss->nl_preq) {
6975                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6976                            "already on! nl_preq=%p", bss->nl_preq);
6977                 return 0;
6978         }
6979
6980         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6981         if (bss->nl_preq == NULL)
6982                 return -1;
6983         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6984                    "reporting nl_preq=%p", bss->nl_preq);
6985
6986         if (nl80211_register_frame(bss, bss->nl_preq,
6987                                    (WLAN_FC_TYPE_MGMT << 2) |
6988                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6989                                    NULL, 0) < 0)
6990                 goto out_err;
6991
6992         nl80211_register_eloop_read(&bss->nl_preq,
6993                                     wpa_driver_nl80211_event_receive,
6994                                     bss->nl_cb);
6995
6996         return 0;
6997
6998  out_err:
6999         nl_destroy_handles(&bss->nl_preq);
7000         return -1;
7001 }
7002
7003
7004 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7005                                      int ifindex, int disabled)
7006 {
7007         struct nl_msg *msg;
7008         struct nlattr *bands, *band;
7009         int ret;
7010
7011         msg = nlmsg_alloc();
7012         if (!msg)
7013                 return -1;
7014
7015         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK) ||
7016             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex))
7017                 goto fail;
7018
7019         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7020         if (!bands)
7021                 goto fail;
7022
7023         /*
7024          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7025          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7026          * rates. All 5 GHz rates are left enabled.
7027          */
7028         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7029         if (!band ||
7030             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
7031                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
7032                 goto fail;
7033         nla_nest_end(msg, band);
7034
7035         nla_nest_end(msg, bands);
7036
7037         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7038         if (ret) {
7039                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7040                            "(%s)", ret, strerror(-ret));
7041         } else
7042                 drv->disabled_11b_rates = disabled;
7043
7044         return ret;
7045
7046 fail:
7047         nlmsg_free(msg);
7048         return -1;
7049 }
7050
7051
7052 static int wpa_driver_nl80211_deinit_ap(void *priv)
7053 {
7054         struct i802_bss *bss = priv;
7055         struct wpa_driver_nl80211_data *drv = bss->drv;
7056         if (!is_ap_interface(drv->nlmode))
7057                 return -1;
7058         wpa_driver_nl80211_del_beacon(drv);
7059         bss->beacon_set = 0;
7060
7061         /*
7062          * If the P2P GO interface was dynamically added, then it is
7063          * possible that the interface change to station is not possible.
7064          */
7065         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
7066                 return 0;
7067
7068         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7069 }
7070
7071
7072 static int wpa_driver_nl80211_stop_ap(void *priv)
7073 {
7074         struct i802_bss *bss = priv;
7075         struct wpa_driver_nl80211_data *drv = bss->drv;
7076         if (!is_ap_interface(drv->nlmode))
7077                 return -1;
7078         wpa_driver_nl80211_del_beacon(drv);
7079         bss->beacon_set = 0;
7080         return 0;
7081 }
7082
7083
7084 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
7085 {
7086         struct i802_bss *bss = priv;
7087         struct wpa_driver_nl80211_data *drv = bss->drv;
7088         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
7089                 return -1;
7090
7091         /*
7092          * If the P2P Client interface was dynamically added, then it is
7093          * possible that the interface change to station is not possible.
7094          */
7095         if (bss->if_dynamic)
7096                 return 0;
7097
7098         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7099 }
7100
7101
7102 static void wpa_driver_nl80211_resume(void *priv)
7103 {
7104         struct i802_bss *bss = priv;
7105
7106         if (i802_set_iface_flags(bss, 1))
7107                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
7108 }
7109
7110
7111 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7112                                   const u8 *ies, size_t ies_len)
7113 {
7114         struct i802_bss *bss = priv;
7115         struct wpa_driver_nl80211_data *drv = bss->drv;
7116         int ret;
7117         u8 *data, *pos;
7118         size_t data_len;
7119         const u8 *own_addr = bss->addr;
7120
7121         if (action != 1) {
7122                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7123                            "action %d", action);
7124                 return -1;
7125         }
7126
7127         /*
7128          * Action frame payload:
7129          * Category[1] = 6 (Fast BSS Transition)
7130          * Action[1] = 1 (Fast BSS Transition Request)
7131          * STA Address
7132          * Target AP Address
7133          * FT IEs
7134          */
7135
7136         data_len = 2 + 2 * ETH_ALEN + ies_len;
7137         data = os_malloc(data_len);
7138         if (data == NULL)
7139                 return -1;
7140         pos = data;
7141         *pos++ = 0x06; /* FT Action category */
7142         *pos++ = action;
7143         os_memcpy(pos, own_addr, ETH_ALEN);
7144         pos += ETH_ALEN;
7145         os_memcpy(pos, target_ap, ETH_ALEN);
7146         pos += ETH_ALEN;
7147         os_memcpy(pos, ies, ies_len);
7148
7149         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7150                                              drv->bssid, own_addr, drv->bssid,
7151                                              data, data_len, 0);
7152         os_free(data);
7153
7154         return ret;
7155 }
7156
7157
7158 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7159 {
7160         struct i802_bss *bss = priv;
7161         struct wpa_driver_nl80211_data *drv = bss->drv;
7162         struct nl_msg *msg;
7163         struct nlattr *cqm;
7164
7165         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7166                    "hysteresis=%d", threshold, hysteresis);
7167
7168         msg = nlmsg_alloc();
7169         if (!msg)
7170                 return -1;
7171
7172         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM) ||
7173             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7174             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
7175             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
7176             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
7177                 nlmsg_free(msg);
7178                 return -1;
7179         }
7180         nla_nest_end(msg, cqm);
7181
7182         return send_and_recv_msgs(drv, msg, NULL, NULL);
7183 }
7184
7185
7186 static int get_channel_width(struct nl_msg *msg, void *arg)
7187 {
7188         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7189         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7190         struct wpa_signal_info *sig_change = arg;
7191
7192         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7193                   genlmsg_attrlen(gnlh, 0), NULL);
7194
7195         sig_change->center_frq1 = -1;
7196         sig_change->center_frq2 = -1;
7197         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
7198
7199         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
7200                 sig_change->chanwidth = convert2width(
7201                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
7202                 if (tb[NL80211_ATTR_CENTER_FREQ1])
7203                         sig_change->center_frq1 =
7204                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
7205                 if (tb[NL80211_ATTR_CENTER_FREQ2])
7206                         sig_change->center_frq2 =
7207                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
7208         }
7209
7210         return NL_SKIP;
7211 }
7212
7213
7214 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
7215                                      struct wpa_signal_info *sig)
7216 {
7217         struct nl_msg *msg;
7218
7219         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
7220         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
7221 }
7222
7223
7224 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7225 {
7226         struct i802_bss *bss = priv;
7227         struct wpa_driver_nl80211_data *drv = bss->drv;
7228         int res;
7229
7230         os_memset(si, 0, sizeof(*si));
7231         res = nl80211_get_link_signal(drv, si);
7232         if (res != 0)
7233                 return res;
7234
7235         res = nl80211_get_channel_width(drv, si);
7236         if (res != 0)
7237                 return res;
7238
7239         return nl80211_get_link_noise(drv, si);
7240 }
7241
7242
7243 static int wpa_driver_nl80211_shared_freq(void *priv)
7244 {
7245         struct i802_bss *bss = priv;
7246         struct wpa_driver_nl80211_data *drv = bss->drv;
7247         struct wpa_driver_nl80211_data *driver;
7248         int freq = 0;
7249
7250         /*
7251          * If the same PHY is in connected state with some other interface,
7252          * then retrieve the assoc freq.
7253          */
7254         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
7255                    drv->phyname);
7256
7257         dl_list_for_each(driver, &drv->global->interfaces,
7258                          struct wpa_driver_nl80211_data, list) {
7259                 if (drv == driver ||
7260                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
7261                     !driver->associated)
7262                         continue;
7263
7264                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
7265                            MACSTR,
7266                            driver->phyname, driver->first_bss->ifname,
7267                            MAC2STR(driver->first_bss->addr));
7268                 if (is_ap_interface(driver->nlmode))
7269                         freq = driver->first_bss->freq;
7270                 else
7271                         freq = nl80211_get_assoc_freq(driver);
7272                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
7273                            drv->phyname, freq);
7274         }
7275
7276         if (!freq)
7277                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
7278                            "PHY (%s) in associated state", drv->phyname);
7279
7280         return freq;
7281 }
7282
7283
7284 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7285                               int encrypt)
7286 {
7287         struct i802_bss *bss = priv;
7288         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
7289                                              0, 0, 0, 0);
7290 }
7291
7292
7293 static int nl80211_set_param(void *priv, const char *param)
7294 {
7295         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7296         if (param == NULL)
7297                 return 0;
7298
7299 #ifdef CONFIG_P2P
7300         if (os_strstr(param, "use_p2p_group_interface=1")) {
7301                 struct i802_bss *bss = priv;
7302                 struct wpa_driver_nl80211_data *drv = bss->drv;
7303
7304                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7305                            "interface");
7306                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7307                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7308         }
7309 #endif /* CONFIG_P2P */
7310
7311         if (os_strstr(param, "use_monitor=1")) {
7312                 struct i802_bss *bss = priv;
7313                 struct wpa_driver_nl80211_data *drv = bss->drv;
7314                 drv->use_monitor = 1;
7315         }
7316
7317         if (os_strstr(param, "force_connect_cmd=1")) {
7318                 struct i802_bss *bss = priv;
7319                 struct wpa_driver_nl80211_data *drv = bss->drv;
7320                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
7321                 drv->force_connect_cmd = 1;
7322         }
7323
7324         if (os_strstr(param, "no_offchannel_tx=1")) {
7325                 struct i802_bss *bss = priv;
7326                 struct wpa_driver_nl80211_data *drv = bss->drv;
7327                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
7328                 drv->test_use_roc_tx = 1;
7329         }
7330
7331         return 0;
7332 }
7333
7334
7335 static void * nl80211_global_init(void)
7336 {
7337         struct nl80211_global *global;
7338         struct netlink_config *cfg;
7339
7340         global = os_zalloc(sizeof(*global));
7341         if (global == NULL)
7342                 return NULL;
7343         global->ioctl_sock = -1;
7344         dl_list_init(&global->interfaces);
7345         global->if_add_ifindex = -1;
7346
7347         cfg = os_zalloc(sizeof(*cfg));
7348         if (cfg == NULL)
7349                 goto err;
7350
7351         cfg->ctx = global;
7352         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7353         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7354         global->netlink = netlink_init(cfg);
7355         if (global->netlink == NULL) {
7356                 os_free(cfg);
7357                 goto err;
7358         }
7359
7360         if (wpa_driver_nl80211_init_nl_global(global) < 0)
7361                 goto err;
7362
7363         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7364         if (global->ioctl_sock < 0) {
7365                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7366                            strerror(errno));
7367                 goto err;
7368         }
7369
7370         return global;
7371
7372 err:
7373         nl80211_global_deinit(global);
7374         return NULL;
7375 }
7376
7377
7378 static void nl80211_global_deinit(void *priv)
7379 {
7380         struct nl80211_global *global = priv;
7381         if (global == NULL)
7382                 return;
7383         if (!dl_list_empty(&global->interfaces)) {
7384                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7385                            "nl80211_global_deinit",
7386                            dl_list_len(&global->interfaces));
7387         }
7388
7389         if (global->netlink)
7390                 netlink_deinit(global->netlink);
7391
7392         nl_destroy_handles(&global->nl);
7393
7394         if (global->nl_event)
7395                 nl80211_destroy_eloop_handle(&global->nl_event);
7396
7397         nl_cb_put(global->nl_cb);
7398
7399         if (global->ioctl_sock >= 0)
7400                 close(global->ioctl_sock);
7401
7402         os_free(global);
7403 }
7404
7405
7406 static const char * nl80211_get_radio_name(void *priv)
7407 {
7408         struct i802_bss *bss = priv;
7409         struct wpa_driver_nl80211_data *drv = bss->drv;
7410         return drv->phyname;
7411 }
7412
7413
7414 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7415                          const u8 *pmkid)
7416 {
7417         struct nl_msg *msg;
7418
7419         msg = nlmsg_alloc();
7420         if (!msg)
7421                 return -ENOMEM;
7422
7423         if (!nl80211_cmd(bss->drv, msg, 0, cmd) ||
7424             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7425                         if_nametoindex(bss->ifname)) ||
7426             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
7427             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
7428                 nlmsg_free(msg);
7429                 return -ENOBUFS;
7430         }
7431
7432         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7433 }
7434
7435
7436 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7437 {
7438         struct i802_bss *bss = priv;
7439         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7440         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7441 }
7442
7443
7444 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7445 {
7446         struct i802_bss *bss = priv;
7447         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7448                    MAC2STR(bssid));
7449         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7450 }
7451
7452
7453 static int nl80211_flush_pmkid(void *priv)
7454 {
7455         struct i802_bss *bss = priv;
7456         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7457         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7458 }
7459
7460
7461 static void clean_survey_results(struct survey_results *survey_results)
7462 {
7463         struct freq_survey *survey, *tmp;
7464
7465         if (dl_list_empty(&survey_results->survey_list))
7466                 return;
7467
7468         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7469                               struct freq_survey, list) {
7470                 dl_list_del(&survey->list);
7471                 os_free(survey);
7472         }
7473 }
7474
7475
7476 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7477                        struct dl_list *survey_list)
7478 {
7479         struct freq_survey *survey;
7480
7481         survey = os_zalloc(sizeof(struct freq_survey));
7482         if  (!survey)
7483                 return;
7484
7485         survey->ifidx = ifidx;
7486         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7487         survey->filled = 0;
7488
7489         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7490                 survey->nf = (int8_t)
7491                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7492                 survey->filled |= SURVEY_HAS_NF;
7493         }
7494
7495         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7496                 survey->channel_time =
7497                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7498                 survey->filled |= SURVEY_HAS_CHAN_TIME;
7499         }
7500
7501         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7502                 survey->channel_time_busy =
7503                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7504                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7505         }
7506
7507         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7508                 survey->channel_time_rx =
7509                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7510                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7511         }
7512
7513         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7514                 survey->channel_time_tx =
7515                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7516                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7517         }
7518
7519         wpa_printf(MSG_DEBUG, "nl80211: Freq survey dump event (freq=%d MHz noise=%d channel_time=%ld busy_time=%ld tx_time=%ld rx_time=%ld filled=%04x)",
7520                    survey->freq,
7521                    survey->nf,
7522                    (unsigned long int) survey->channel_time,
7523                    (unsigned long int) survey->channel_time_busy,
7524                    (unsigned long int) survey->channel_time_tx,
7525                    (unsigned long int) survey->channel_time_rx,
7526                    survey->filled);
7527
7528         dl_list_add_tail(survey_list, &survey->list);
7529 }
7530
7531
7532 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7533                            unsigned int freq_filter)
7534 {
7535         if (!freq_filter)
7536                 return 1;
7537
7538         return freq_filter == surveyed_freq;
7539 }
7540
7541
7542 static int survey_handler(struct nl_msg *msg, void *arg)
7543 {
7544         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7545         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7546         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7547         struct survey_results *survey_results;
7548         u32 surveyed_freq = 0;
7549         u32 ifidx;
7550
7551         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7552                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7553                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7554         };
7555
7556         survey_results = (struct survey_results *) arg;
7557
7558         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7559                   genlmsg_attrlen(gnlh, 0), NULL);
7560
7561         if (!tb[NL80211_ATTR_IFINDEX])
7562                 return NL_SKIP;
7563
7564         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7565
7566         if (!tb[NL80211_ATTR_SURVEY_INFO])
7567                 return NL_SKIP;
7568
7569         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7570                              tb[NL80211_ATTR_SURVEY_INFO],
7571                              survey_policy))
7572                 return NL_SKIP;
7573
7574         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7575                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7576                 return NL_SKIP;
7577         }
7578
7579         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7580
7581         if (!check_survey_ok(sinfo, surveyed_freq,
7582                              survey_results->freq_filter))
7583                 return NL_SKIP;
7584
7585         if (survey_results->freq_filter &&
7586             survey_results->freq_filter != surveyed_freq) {
7587                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7588                            surveyed_freq);
7589                 return NL_SKIP;
7590         }
7591
7592         add_survey(sinfo, ifidx, &survey_results->survey_list);
7593
7594         return NL_SKIP;
7595 }
7596
7597
7598 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7599 {
7600         struct i802_bss *bss = priv;
7601         struct wpa_driver_nl80211_data *drv = bss->drv;
7602         struct nl_msg *msg;
7603         int err;
7604         union wpa_event_data data;
7605         struct survey_results *survey_results;
7606
7607         os_memset(&data, 0, sizeof(data));
7608         survey_results = &data.survey_results;
7609
7610         dl_list_init(&survey_results->survey_list);
7611
7612         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7613         if (!msg)
7614                 return -ENOBUFS;
7615
7616         if (freq)
7617                 data.survey_results.freq_filter = freq;
7618
7619         do {
7620                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7621                 err = send_and_recv_msgs(drv, msg, survey_handler,
7622                                          survey_results);
7623         } while (err > 0);
7624
7625         if (err)
7626                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7627         else
7628                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7629
7630         clean_survey_results(survey_results);
7631         return err;
7632 }
7633
7634
7635 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7636                                    const u8 *replay_ctr)
7637 {
7638         struct i802_bss *bss = priv;
7639         struct wpa_driver_nl80211_data *drv = bss->drv;
7640         struct nlattr *replay_nested;
7641         struct nl_msg *msg;
7642
7643         msg = nlmsg_alloc();
7644         if (!msg)
7645                 return;
7646
7647         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD) ||
7648             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7649             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
7650             nla_put(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek) ||
7651             nla_put(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck) ||
7652             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7653                     replay_ctr)) {
7654                 nlmsg_free(msg);
7655                 return;
7656         }
7657
7658         nla_nest_end(msg, replay_nested);
7659
7660         send_and_recv_msgs(drv, msg, NULL, NULL);
7661 }
7662
7663
7664 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7665                                     const u8 *addr, int qos)
7666 {
7667         /* send data frame to poll STA and check whether
7668          * this frame is ACKed */
7669         struct {
7670                 struct ieee80211_hdr hdr;
7671                 u16 qos_ctl;
7672         } STRUCT_PACKED nulldata;
7673         size_t size;
7674
7675         /* Send data frame to poll STA and check whether this frame is ACKed */
7676
7677         os_memset(&nulldata, 0, sizeof(nulldata));
7678
7679         if (qos) {
7680                 nulldata.hdr.frame_control =
7681                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7682                                      WLAN_FC_STYPE_QOS_NULL);
7683                 size = sizeof(nulldata);
7684         } else {
7685                 nulldata.hdr.frame_control =
7686                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7687                                      WLAN_FC_STYPE_NULLFUNC);
7688                 size = sizeof(struct ieee80211_hdr);
7689         }
7690
7691         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7692         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7693         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7694         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7695
7696         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7697                                          0, 0) < 0)
7698                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7699                            "send poll frame");
7700 }
7701
7702 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7703                                 int qos)
7704 {
7705         struct i802_bss *bss = priv;
7706         struct wpa_driver_nl80211_data *drv = bss->drv;
7707         struct nl_msg *msg;
7708
7709         if (!drv->poll_command_supported) {
7710                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7711                 return;
7712         }
7713
7714         msg = nlmsg_alloc();
7715         if (!msg)
7716                 return;
7717
7718         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT) ||
7719             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7720             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7721                 nlmsg_free(msg);
7722                 return;
7723         }
7724
7725         send_and_recv_msgs(drv, msg, NULL, NULL);
7726 }
7727
7728
7729 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7730 {
7731         struct nl_msg *msg;
7732
7733         msg = nlmsg_alloc();
7734         if (!msg)
7735                 return -ENOMEM;
7736
7737         if (!nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE) ||
7738             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7739             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7740                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7741                 nlmsg_free(msg);
7742                 return -ENOBUFS;
7743         }
7744         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7745 }
7746
7747
7748 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7749                                      int ctwindow)
7750 {
7751         struct i802_bss *bss = priv;
7752
7753         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7754                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7755
7756         if (opp_ps != -1 || ctwindow != -1) {
7757 #ifdef ANDROID_P2P
7758                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7759 #else /* ANDROID_P2P */
7760                 return -1; /* Not yet supported */
7761 #endif /* ANDROID_P2P */
7762         }
7763
7764         if (legacy_ps == -1)
7765                 return 0;
7766         if (legacy_ps != 0 && legacy_ps != 1)
7767                 return -1; /* Not yet supported */
7768
7769         return nl80211_set_power_save(bss, legacy_ps);
7770 }
7771
7772
7773 static int nl80211_start_radar_detection(void *priv,
7774                                          struct hostapd_freq_params *freq)
7775 {
7776         struct i802_bss *bss = priv;
7777         struct wpa_driver_nl80211_data *drv = bss->drv;
7778         struct nl_msg *msg;
7779         int ret;
7780
7781         wpa_printf(MSG_DEBUG, "nl80211: Start radar detection (CAC) %d MHz (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
7782                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7783                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7784
7785         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7786                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7787                            "detection");
7788                 return -1;
7789         }
7790
7791         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7792             nl80211_put_freq_params(msg, freq) < 0) {
7793                 nlmsg_free(msg);
7794                 return -1;
7795         }
7796
7797         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7798         if (ret == 0)
7799                 return 0;
7800         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7801                    "%d (%s)", ret, strerror(-ret));
7802         return -1;
7803 }
7804
7805 #ifdef CONFIG_TDLS
7806
7807 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7808                                   u8 dialog_token, u16 status_code,
7809                                   u32 peer_capab, int initiator, const u8 *buf,
7810                                   size_t len)
7811 {
7812         struct i802_bss *bss = priv;
7813         struct wpa_driver_nl80211_data *drv = bss->drv;
7814         struct nl_msg *msg;
7815
7816         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7817                 return -EOPNOTSUPP;
7818
7819         if (!dst)
7820                 return -EINVAL;
7821
7822         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7823             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7824             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7825             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7826             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7827                 goto fail;
7828         if (peer_capab) {
7829                 /*
7830                  * The internal enum tdls_peer_capability definition is
7831                  * currently identical with the nl80211 enum
7832                  * nl80211_tdls_peer_capability, so no conversion is needed
7833                  * here.
7834                  */
7835                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7836                                 peer_capab))
7837                         goto fail;
7838         }
7839         if ((initiator &&
7840              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7841             nla_put(msg, NL80211_ATTR_IE, len, buf))
7842                 goto fail;
7843
7844         return send_and_recv_msgs(drv, msg, NULL, NULL);
7845
7846 fail:
7847         nlmsg_free(msg);
7848         return -ENOBUFS;
7849 }
7850
7851
7852 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7853 {
7854         struct i802_bss *bss = priv;
7855         struct wpa_driver_nl80211_data *drv = bss->drv;
7856         struct nl_msg *msg;
7857         enum nl80211_tdls_operation nl80211_oper;
7858
7859         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7860                 return -EOPNOTSUPP;
7861
7862         switch (oper) {
7863         case TDLS_DISCOVERY_REQ:
7864                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7865                 break;
7866         case TDLS_SETUP:
7867                 nl80211_oper = NL80211_TDLS_SETUP;
7868                 break;
7869         case TDLS_TEARDOWN:
7870                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7871                 break;
7872         case TDLS_ENABLE_LINK:
7873                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7874                 break;
7875         case TDLS_DISABLE_LINK:
7876                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7877                 break;
7878         case TDLS_ENABLE:
7879                 return 0;
7880         case TDLS_DISABLE:
7881                 return 0;
7882         default:
7883                 return -EINVAL;
7884         }
7885
7886         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7887             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7888             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7889                 nlmsg_free(msg);
7890                 return -ENOBUFS;
7891         }
7892
7893         return send_and_recv_msgs(drv, msg, NULL, NULL);
7894 }
7895
7896 #endif /* CONFIG TDLS */
7897
7898
7899 static int driver_nl80211_set_key(const char *ifname, void *priv,
7900                                   enum wpa_alg alg, const u8 *addr,
7901                                   int key_idx, int set_tx,
7902                                   const u8 *seq, size_t seq_len,
7903                                   const u8 *key, size_t key_len)
7904 {
7905         struct i802_bss *bss = priv;
7906         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7907                                           set_tx, seq, seq_len, key, key_len);
7908 }
7909
7910
7911 static int driver_nl80211_scan2(void *priv,
7912                                 struct wpa_driver_scan_params *params)
7913 {
7914         struct i802_bss *bss = priv;
7915         return wpa_driver_nl80211_scan(bss, params);
7916 }
7917
7918
7919 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7920                                          int reason_code)
7921 {
7922         struct i802_bss *bss = priv;
7923         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7924 }
7925
7926
7927 static int driver_nl80211_authenticate(void *priv,
7928                                        struct wpa_driver_auth_params *params)
7929 {
7930         struct i802_bss *bss = priv;
7931         return wpa_driver_nl80211_authenticate(bss, params);
7932 }
7933
7934
7935 static void driver_nl80211_deinit(void *priv)
7936 {
7937         struct i802_bss *bss = priv;
7938         wpa_driver_nl80211_deinit(bss);
7939 }
7940
7941
7942 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7943                                     const char *ifname)
7944 {
7945         struct i802_bss *bss = priv;
7946         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7947 }
7948
7949
7950 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7951                                     size_t data_len, int noack)
7952 {
7953         struct i802_bss *bss = priv;
7954         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7955                                             0, 0, 0, 0);
7956 }
7957
7958
7959 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7960 {
7961         struct i802_bss *bss = priv;
7962         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7963 }
7964
7965
7966 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7967                                        const char *ifname, int vlan_id)
7968 {
7969         struct i802_bss *bss = priv;
7970         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7971 }
7972
7973
7974 static int driver_nl80211_read_sta_data(void *priv,
7975                                         struct hostap_sta_driver_data *data,
7976                                         const u8 *addr)
7977 {
7978         struct i802_bss *bss = priv;
7979         return i802_read_sta_data(bss, data, addr);
7980 }
7981
7982
7983 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7984                                       unsigned int wait_time,
7985                                       const u8 *dst, const u8 *src,
7986                                       const u8 *bssid,
7987                                       const u8 *data, size_t data_len,
7988                                       int no_cck)
7989 {
7990         struct i802_bss *bss = priv;
7991         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7992                                               bssid, data, data_len, no_cck);
7993 }
7994
7995
7996 static int driver_nl80211_probe_req_report(void *priv, int report)
7997 {
7998         struct i802_bss *bss = priv;
7999         return wpa_driver_nl80211_probe_req_report(bss, report);
8000 }
8001
8002
8003 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
8004                                             const u8 *ies, size_t ies_len)
8005 {
8006         int ret;
8007         struct nl_msg *msg;
8008         struct i802_bss *bss = priv;
8009         struct wpa_driver_nl80211_data *drv = bss->drv;
8010         u16 mdid = WPA_GET_LE16(md);
8011
8012         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
8013         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
8014             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
8015             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
8016                 nlmsg_free(msg);
8017                 return -ENOBUFS;
8018         }
8019
8020         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8021         if (ret) {
8022                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
8023                            "err=%d (%s)", ret, strerror(-ret));
8024         }
8025
8026         return ret;
8027 }
8028
8029
8030 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
8031 {
8032         struct i802_bss *bss = priv;
8033         struct wpa_driver_nl80211_data *drv = bss->drv;
8034
8035         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
8036                 return NULL;
8037
8038         return bss->addr;
8039 }
8040
8041
8042 static const char * scan_state_str(enum scan_states scan_state)
8043 {
8044         switch (scan_state) {
8045         case NO_SCAN:
8046                 return "NO_SCAN";
8047         case SCAN_REQUESTED:
8048                 return "SCAN_REQUESTED";
8049         case SCAN_STARTED:
8050                 return "SCAN_STARTED";
8051         case SCAN_COMPLETED:
8052                 return "SCAN_COMPLETED";
8053         case SCAN_ABORTED:
8054                 return "SCAN_ABORTED";
8055         case SCHED_SCAN_STARTED:
8056                 return "SCHED_SCAN_STARTED";
8057         case SCHED_SCAN_STOPPED:
8058                 return "SCHED_SCAN_STOPPED";
8059         case SCHED_SCAN_RESULTS:
8060                 return "SCHED_SCAN_RESULTS";
8061         }
8062
8063         return "??";
8064 }
8065
8066
8067 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
8068 {
8069         struct i802_bss *bss = priv;
8070         struct wpa_driver_nl80211_data *drv = bss->drv;
8071         int res;
8072         char *pos, *end;
8073
8074         pos = buf;
8075         end = buf + buflen;
8076
8077         res = os_snprintf(pos, end - pos,
8078                           "ifindex=%d\n"
8079                           "ifname=%s\n"
8080                           "brname=%s\n"
8081                           "addr=" MACSTR "\n"
8082                           "freq=%d\n"
8083                           "%s%s%s%s%s",
8084                           bss->ifindex,
8085                           bss->ifname,
8086                           bss->brname,
8087                           MAC2STR(bss->addr),
8088                           bss->freq,
8089                           bss->beacon_set ? "beacon_set=1\n" : "",
8090                           bss->added_if_into_bridge ?
8091                           "added_if_into_bridge=1\n" : "",
8092                           bss->added_bridge ? "added_bridge=1\n" : "",
8093                           bss->in_deinit ? "in_deinit=1\n" : "",
8094                           bss->if_dynamic ? "if_dynamic=1\n" : "");
8095         if (res < 0 || res >= end - pos)
8096                 return pos - buf;
8097         pos += res;
8098
8099         if (bss->wdev_id_set) {
8100                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
8101                                   (unsigned long long) bss->wdev_id);
8102                 if (res < 0 || res >= end - pos)
8103                         return pos - buf;
8104                 pos += res;
8105         }
8106
8107         res = os_snprintf(pos, end - pos,
8108                           "phyname=%s\n"
8109                           "perm_addr=" MACSTR "\n"
8110                           "drv_ifindex=%d\n"
8111                           "operstate=%d\n"
8112                           "scan_state=%s\n"
8113                           "auth_bssid=" MACSTR "\n"
8114                           "auth_attempt_bssid=" MACSTR "\n"
8115                           "bssid=" MACSTR "\n"
8116                           "prev_bssid=" MACSTR "\n"
8117                           "associated=%d\n"
8118                           "assoc_freq=%u\n"
8119                           "monitor_sock=%d\n"
8120                           "monitor_ifidx=%d\n"
8121                           "monitor_refcount=%d\n"
8122                           "last_mgmt_freq=%u\n"
8123                           "eapol_tx_sock=%d\n"
8124                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
8125                           drv->phyname,
8126                           MAC2STR(drv->perm_addr),
8127                           drv->ifindex,
8128                           drv->operstate,
8129                           scan_state_str(drv->scan_state),
8130                           MAC2STR(drv->auth_bssid),
8131                           MAC2STR(drv->auth_attempt_bssid),
8132                           MAC2STR(drv->bssid),
8133                           MAC2STR(drv->prev_bssid),
8134                           drv->associated,
8135                           drv->assoc_freq,
8136                           drv->monitor_sock,
8137                           drv->monitor_ifidx,
8138                           drv->monitor_refcount,
8139                           drv->last_mgmt_freq,
8140                           drv->eapol_tx_sock,
8141                           drv->ignore_if_down_event ?
8142                           "ignore_if_down_event=1\n" : "",
8143                           drv->scan_complete_events ?
8144                           "scan_complete_events=1\n" : "",
8145                           drv->disabled_11b_rates ?
8146                           "disabled_11b_rates=1\n" : "",
8147                           drv->pending_remain_on_chan ?
8148                           "pending_remain_on_chan=1\n" : "",
8149                           drv->in_interface_list ? "in_interface_list=1\n" : "",
8150                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
8151                           drv->poll_command_supported ?
8152                           "poll_command_supported=1\n" : "",
8153                           drv->data_tx_status ? "data_tx_status=1\n" : "",
8154                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
8155                           drv->retry_auth ? "retry_auth=1\n" : "",
8156                           drv->use_monitor ? "use_monitor=1\n" : "",
8157                           drv->ignore_next_local_disconnect ?
8158                           "ignore_next_local_disconnect=1\n" : "",
8159                           drv->ignore_next_local_deauth ?
8160                           "ignore_next_local_deauth=1\n" : "");
8161         if (res < 0 || res >= end - pos)
8162                 return pos - buf;
8163         pos += res;
8164
8165         if (drv->has_capability) {
8166                 res = os_snprintf(pos, end - pos,
8167                                   "capa.key_mgmt=0x%x\n"
8168                                   "capa.enc=0x%x\n"
8169                                   "capa.auth=0x%x\n"
8170                                   "capa.flags=0x%llx\n"
8171                                   "capa.max_scan_ssids=%d\n"
8172                                   "capa.max_sched_scan_ssids=%d\n"
8173                                   "capa.sched_scan_supported=%d\n"
8174                                   "capa.max_match_sets=%d\n"
8175                                   "capa.max_remain_on_chan=%u\n"
8176                                   "capa.max_stations=%u\n"
8177                                   "capa.probe_resp_offloads=0x%x\n"
8178                                   "capa.max_acl_mac_addrs=%u\n"
8179                                   "capa.num_multichan_concurrent=%u\n",
8180                                   drv->capa.key_mgmt,
8181                                   drv->capa.enc,
8182                                   drv->capa.auth,
8183                                   (unsigned long long) drv->capa.flags,
8184                                   drv->capa.max_scan_ssids,
8185                                   drv->capa.max_sched_scan_ssids,
8186                                   drv->capa.sched_scan_supported,
8187                                   drv->capa.max_match_sets,
8188                                   drv->capa.max_remain_on_chan,
8189                                   drv->capa.max_stations,
8190                                   drv->capa.probe_resp_offloads,
8191                                   drv->capa.max_acl_mac_addrs,
8192                                   drv->capa.num_multichan_concurrent);
8193                 if (res < 0 || res >= end - pos)
8194                         return pos - buf;
8195                 pos += res;
8196         }
8197
8198         return pos - buf;
8199 }
8200
8201
8202 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
8203 {
8204         if ((settings->head &&
8205              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
8206                      settings->head_len, settings->head)) ||
8207             (settings->tail &&
8208              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
8209                      settings->tail_len, settings->tail)) ||
8210             (settings->beacon_ies &&
8211              nla_put(msg, NL80211_ATTR_IE,
8212                      settings->beacon_ies_len, settings->beacon_ies)) ||
8213             (settings->proberesp_ies &&
8214              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
8215                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
8216             (settings->assocresp_ies &&
8217              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
8218                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
8219             (settings->probe_resp &&
8220              nla_put(msg, NL80211_ATTR_PROBE_RESP,
8221                      settings->probe_resp_len, settings->probe_resp)))
8222                 return -ENOBUFS;
8223
8224         return 0;
8225 }
8226
8227
8228 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
8229 {
8230         struct nl_msg *msg;
8231         struct i802_bss *bss = priv;
8232         struct wpa_driver_nl80211_data *drv = bss->drv;
8233         struct nlattr *beacon_csa;
8234         int ret = -ENOBUFS;
8235
8236         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
8237                    settings->cs_count, settings->block_tx,
8238                    settings->freq_params.freq, settings->freq_params.bandwidth,
8239                    settings->freq_params.center_freq1,
8240                    settings->freq_params.center_freq2);
8241
8242         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8243                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
8244                 return -EOPNOTSUPP;
8245         }
8246
8247         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
8248             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
8249                 return -EOPNOTSUPP;
8250
8251         /* check settings validity */
8252         if (!settings->beacon_csa.tail ||
8253             ((settings->beacon_csa.tail_len <=
8254               settings->counter_offset_beacon) ||
8255              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
8256               settings->cs_count)))
8257                 return -EINVAL;
8258
8259         if (settings->beacon_csa.probe_resp &&
8260             ((settings->beacon_csa.probe_resp_len <=
8261               settings->counter_offset_presp) ||
8262              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
8263               settings->cs_count)))
8264                 return -EINVAL;
8265
8266         msg = nlmsg_alloc();
8267         if (!msg)
8268                 return -ENOMEM;
8269
8270         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH) ||
8271             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
8272             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
8273                         settings->cs_count) ||
8274             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
8275             (settings->block_tx &&
8276              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
8277                 goto error;
8278
8279         /* beacon_after params */
8280         ret = set_beacon_data(msg, &settings->beacon_after);
8281         if (ret)
8282                 goto error;
8283
8284         /* beacon_csa params */
8285         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8286         if (!beacon_csa)
8287                 goto fail;
8288
8289         ret = set_beacon_data(msg, &settings->beacon_csa);
8290         if (ret)
8291                 goto error;
8292
8293         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8294                         settings->counter_offset_beacon) ||
8295             (settings->beacon_csa.probe_resp &&
8296              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8297                          settings->counter_offset_presp)))
8298                 goto fail;
8299
8300         nla_nest_end(msg, beacon_csa);
8301         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8302         if (ret) {
8303                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8304                            ret, strerror(-ret));
8305         }
8306         return ret;
8307
8308 fail:
8309         ret = -ENOBUFS;
8310 error:
8311         nlmsg_free(msg);
8312         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8313         return ret;
8314 }
8315
8316
8317 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8318                           u8 user_priority, u16 admitted_time)
8319 {
8320         struct i802_bss *bss = priv;
8321         struct wpa_driver_nl80211_data *drv = bss->drv;
8322         struct nl_msg *msg;
8323         int ret;
8324
8325         wpa_printf(MSG_DEBUG,
8326                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8327                    tsid, admitted_time, user_priority);
8328
8329         if (!is_sta_interface(drv->nlmode))
8330                 return -ENOTSUP;
8331
8332         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
8333         if (!msg ||
8334             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8335             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8336             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
8337             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
8338                 nlmsg_free(msg);
8339                 return -ENOBUFS;
8340         }
8341
8342         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8343         if (ret)
8344                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8345                            ret, strerror(-ret));
8346         return ret;
8347 }
8348
8349
8350 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8351 {
8352         struct i802_bss *bss = priv;
8353         struct wpa_driver_nl80211_data *drv = bss->drv;
8354         struct nl_msg *msg;
8355         int ret;
8356
8357         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8358
8359         if (!is_sta_interface(drv->nlmode))
8360                 return -ENOTSUP;
8361
8362         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
8363             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8364             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
8365                 nlmsg_free(msg);
8366                 return -ENOBUFS;
8367         }
8368
8369         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8370         if (ret)
8371                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8372                            ret, strerror(-ret));
8373         return ret;
8374 }
8375
8376
8377 #ifdef CONFIG_TESTING_OPTIONS
8378 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8379 {
8380         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8381         struct wpabuf *buf = arg;
8382
8383         if (!buf)
8384                 return NL_SKIP;
8385
8386         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8387                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8388                 return NL_SKIP;
8389         }
8390
8391         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8392                         genlmsg_attrlen(gnlh, 0));
8393
8394         return NL_SKIP;
8395 }
8396 #endif /* CONFIG_TESTING_OPTIONS */
8397
8398
8399 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8400 {
8401         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8402         struct nlattr *nl_vendor_reply, *nl;
8403         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8404         struct wpabuf *buf = arg;
8405         int rem;
8406
8407         if (!buf)
8408                 return NL_SKIP;
8409
8410         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8411                   genlmsg_attrlen(gnlh, 0), NULL);
8412         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8413
8414         if (!nl_vendor_reply)
8415                 return NL_SKIP;
8416
8417         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8418                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8419                 return NL_SKIP;
8420         }
8421
8422         nla_for_each_nested(nl, nl_vendor_reply, rem) {
8423                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8424         }
8425
8426         return NL_SKIP;
8427 }
8428
8429
8430 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8431                               unsigned int subcmd, const u8 *data,
8432                               size_t data_len, struct wpabuf *buf)
8433 {
8434         struct i802_bss *bss = priv;
8435         struct wpa_driver_nl80211_data *drv = bss->drv;
8436         struct nl_msg *msg;
8437         int ret;
8438
8439 #ifdef CONFIG_TESTING_OPTIONS
8440         if (vendor_id == 0xffffffff) {
8441                 msg = nlmsg_alloc();
8442                 if (!msg)
8443                         return -ENOMEM;
8444
8445                 nl80211_cmd(drv, msg, 0, subcmd);
8446                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8447                     0)
8448                         goto fail;
8449                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8450                 if (ret)
8451                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8452                                    ret);
8453                 return ret;
8454         }
8455 #endif /* CONFIG_TESTING_OPTIONS */
8456
8457         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
8458             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
8459             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
8460             (data &&
8461              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
8462                 goto fail;
8463
8464         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8465         if (ret)
8466                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8467                            ret);
8468         return ret;
8469
8470 fail:
8471         nlmsg_free(msg);
8472         return -ENOBUFS;
8473 }
8474
8475
8476 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8477                                u8 qos_map_set_len)
8478 {
8479         struct i802_bss *bss = priv;
8480         struct wpa_driver_nl80211_data *drv = bss->drv;
8481         struct nl_msg *msg;
8482         int ret;
8483
8484         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8485                     qos_map_set, qos_map_set_len);
8486
8487         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
8488             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
8489                 nlmsg_free(msg);
8490                 return -ENOBUFS;
8491         }
8492
8493         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8494         if (ret)
8495                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8496
8497         return ret;
8498 }
8499
8500
8501 static int nl80211_set_wowlan(void *priv,
8502                               const struct wowlan_triggers *triggers)
8503 {
8504         struct i802_bss *bss = priv;
8505         struct wpa_driver_nl80211_data *drv = bss->drv;
8506         struct nl_msg *msg;
8507         struct nlattr *wowlan_triggers;
8508         int ret;
8509
8510         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8511
8512         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
8513             !(wowlan_triggers = nla_nest_start(msg,
8514                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
8515             (triggers->any &&
8516              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8517             (triggers->disconnect &&
8518              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8519             (triggers->magic_pkt &&
8520              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8521             (triggers->gtk_rekey_failure &&
8522              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8523             (triggers->eap_identity_req &&
8524              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8525             (triggers->four_way_handshake &&
8526              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8527             (triggers->rfkill_release &&
8528              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
8529                 nlmsg_free(msg);
8530                 return -ENOBUFS;
8531         }
8532
8533         nla_nest_end(msg, wowlan_triggers);
8534
8535         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8536         if (ret)
8537                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8538
8539         return ret;
8540 }
8541
8542
8543 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8544 {
8545         struct i802_bss *bss = priv;
8546         struct wpa_driver_nl80211_data *drv = bss->drv;
8547         struct nl_msg *msg;
8548         struct nlattr *params;
8549
8550         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8551
8552         if (!drv->roaming_vendor_cmd_avail) {
8553                 wpa_printf(MSG_DEBUG,
8554                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8555                 return -1;
8556         }
8557
8558         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8559             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8560             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8561                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
8562             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8563             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8564                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8565                         QCA_ROAMING_NOT_ALLOWED) ||
8566             (bssid &&
8567              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
8568                 nlmsg_free(msg);
8569                 return -1;
8570         }
8571         nla_nest_end(msg, params);
8572
8573         return send_and_recv_msgs(drv, msg, NULL, NULL);
8574 }
8575
8576
8577 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8578 {
8579         struct i802_bss *bss = priv;
8580         struct wpa_driver_nl80211_data *drv = bss->drv;
8581         int new_addr = addr != NULL;
8582
8583         if (!addr)
8584                 addr = drv->perm_addr;
8585
8586         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8587                 return -1;
8588
8589         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8590         {
8591                 wpa_printf(MSG_DEBUG,
8592                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8593                            bss->ifname, MAC2STR(addr));
8594                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8595                                           1) < 0) {
8596                         wpa_printf(MSG_DEBUG,
8597                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8598                 }
8599                 return -1;
8600         }
8601
8602         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8603                    bss->ifname, MAC2STR(addr));
8604         drv->addr_changed = new_addr;
8605         os_memcpy(bss->addr, addr, ETH_ALEN);
8606
8607         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8608         {
8609                 wpa_printf(MSG_DEBUG,
8610                            "nl80211: Could not restore interface UP after set_mac_addr");
8611         }
8612
8613         return 0;
8614 }
8615
8616
8617 #ifdef CONFIG_MESH
8618
8619 static int wpa_driver_nl80211_init_mesh(void *priv)
8620 {
8621         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8622                 wpa_printf(MSG_INFO,
8623                            "nl80211: Failed to set interface into mesh mode");
8624                 return -1;
8625         }
8626         return 0;
8627 }
8628
8629
8630 static int
8631 wpa_driver_nl80211_join_mesh(void *priv,
8632                              struct wpa_driver_mesh_join_params *params)
8633 {
8634         struct i802_bss *bss = priv;
8635         struct wpa_driver_nl80211_data *drv = bss->drv;
8636         struct nl_msg *msg;
8637         struct nlattr *container;
8638         int ret = 0;
8639
8640         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8641         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
8642         if (!msg)
8643                 goto fail;
8644         if (params->freq) {
8645                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8646                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
8647                         goto fail;
8648         }
8649
8650         if (params->ht_mode) {
8651                 unsigned int ht_value;
8652                 char *ht_mode = "";
8653
8654                 switch (params->ht_mode) {
8655                 default:
8656                 case CHAN_NO_HT:
8657                         ht_value = NL80211_CHAN_NO_HT;
8658                         ht_mode = "NOHT";
8659                         break;
8660                 case CHAN_HT20:
8661                         ht_value = NL80211_CHAN_HT20;
8662                         ht_mode = "HT20";
8663                         break;
8664                 case CHAN_HT40PLUS:
8665                         ht_value = NL80211_CHAN_HT40PLUS;
8666                         ht_mode = "HT40+";
8667                         break;
8668                 case CHAN_HT40MINUS:
8669                         ht_value = NL80211_CHAN_HT40MINUS;
8670                         ht_mode = "HT40-";
8671                         break;
8672                 }
8673                 wpa_printf(MSG_DEBUG, "  * ht_mode=%s", ht_mode);
8674                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ht_value))
8675                         goto fail;
8676         }
8677
8678         if (params->basic_rates) {
8679                 u8 rates[NL80211_MAX_SUPP_RATES];
8680                 u8 rates_len = 0;
8681                 int i;
8682
8683                 for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
8684                         if (params->basic_rates[i] < 0)
8685                                 break;
8686                         rates[rates_len++] = params->basic_rates[i] / 5;
8687                 }
8688
8689                 if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
8690                             rates))
8691                         goto fail;
8692         }
8693
8694         if (params->meshid) {
8695                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8696                                   params->meshid, params->meshid_len);
8697                 if (nla_put(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
8698                             params->meshid))
8699                         goto fail;
8700         }
8701
8702         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8703
8704         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8705         if (!container)
8706                 goto fail;
8707
8708         if (params->ies) {
8709                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8710                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8711                             params->ies))
8712                         goto fail;
8713         }
8714         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8715         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8716                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8717                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8718                         goto fail;
8719         }
8720         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8721             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8722                 goto fail;
8723         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8724             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8725                 goto fail;
8726         nla_nest_end(msg, container);
8727
8728         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8729         if (!container)
8730                 goto fail;
8731
8732         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8733             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8734                 goto fail;
8735         nla_nest_end(msg, container);
8736
8737         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8738         msg = NULL;
8739         if (ret) {
8740                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8741                            ret, strerror(-ret));
8742                 goto fail;
8743         }
8744         ret = 0;
8745         bss->freq = params->freq;
8746         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8747
8748 fail:
8749         nlmsg_free(msg);
8750         return ret;
8751 }
8752
8753
8754 static int wpa_driver_nl80211_leave_mesh(void *priv)
8755 {
8756         struct i802_bss *bss = priv;
8757         struct wpa_driver_nl80211_data *drv = bss->drv;
8758         struct nl_msg *msg;
8759         int ret;
8760
8761         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8762         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8763         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8764         if (ret) {
8765                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8766                            ret, strerror(-ret));
8767         } else {
8768                 wpa_printf(MSG_DEBUG,
8769                            "nl80211: mesh leave request send successfully");
8770         }
8771
8772         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8773                                         NL80211_IFTYPE_STATION)) {
8774                 wpa_printf(MSG_INFO,
8775                            "nl80211: Failed to set interface into station mode");
8776         }
8777         return ret;
8778 }
8779
8780 #endif /* CONFIG_MESH */
8781
8782
8783 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8784                                       const u8 *ipaddr, int prefixlen,
8785                                       const u8 *addr)
8786 {
8787 #ifdef CONFIG_LIBNL3_ROUTE
8788         struct i802_bss *bss = priv;
8789         struct wpa_driver_nl80211_data *drv = bss->drv;
8790         struct rtnl_neigh *rn;
8791         struct nl_addr *nl_ipaddr = NULL;
8792         struct nl_addr *nl_lladdr = NULL;
8793         int family, addrsize;
8794         int res;
8795
8796         if (!ipaddr || prefixlen == 0 || !addr)
8797                 return -EINVAL;
8798
8799         if (bss->br_ifindex == 0) {
8800                 wpa_printf(MSG_DEBUG,
8801                            "nl80211: bridge must be set before adding an ip neigh to it");
8802                 return -1;
8803         }
8804
8805         if (!drv->rtnl_sk) {
8806                 wpa_printf(MSG_DEBUG,
8807                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8808                 return -1;
8809         }
8810
8811         if (version == 4) {
8812                 family = AF_INET;
8813                 addrsize = 4;
8814         } else if (version == 6) {
8815                 family = AF_INET6;
8816                 addrsize = 16;
8817         } else {
8818                 return -EINVAL;
8819         }
8820
8821         rn = rtnl_neigh_alloc();
8822         if (rn == NULL)
8823                 return -ENOMEM;
8824
8825         /* set the destination ip address for neigh */
8826         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8827         if (nl_ipaddr == NULL) {
8828                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8829                 res = -ENOMEM;
8830                 goto errout;
8831         }
8832         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8833         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8834         if (res) {
8835                 wpa_printf(MSG_DEBUG,
8836                            "nl80211: neigh set destination addr failed");
8837                 goto errout;
8838         }
8839
8840         /* set the corresponding lladdr for neigh */
8841         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8842         if (nl_lladdr == NULL) {
8843                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8844                 res = -ENOMEM;
8845                 goto errout;
8846         }
8847         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8848
8849         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8850         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8851
8852         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8853         if (res) {
8854                 wpa_printf(MSG_DEBUG,
8855                            "nl80211: Adding bridge ip neigh failed: %s",
8856                            strerror(errno));
8857         }
8858 errout:
8859         if (nl_lladdr)
8860                 nl_addr_put(nl_lladdr);
8861         if (nl_ipaddr)
8862                 nl_addr_put(nl_ipaddr);
8863         if (rn)
8864                 rtnl_neigh_put(rn);
8865         return res;
8866 #else /* CONFIG_LIBNL3_ROUTE */
8867         return -1;
8868 #endif /* CONFIG_LIBNL3_ROUTE */
8869 }
8870
8871
8872 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8873                                          const u8 *ipaddr)
8874 {
8875 #ifdef CONFIG_LIBNL3_ROUTE
8876         struct i802_bss *bss = priv;
8877         struct wpa_driver_nl80211_data *drv = bss->drv;
8878         struct rtnl_neigh *rn;
8879         struct nl_addr *nl_ipaddr;
8880         int family, addrsize;
8881         int res;
8882
8883         if (!ipaddr)
8884                 return -EINVAL;
8885
8886         if (version == 4) {
8887                 family = AF_INET;
8888                 addrsize = 4;
8889         } else if (version == 6) {
8890                 family = AF_INET6;
8891                 addrsize = 16;
8892         } else {
8893                 return -EINVAL;
8894         }
8895
8896         if (bss->br_ifindex == 0) {
8897                 wpa_printf(MSG_DEBUG,
8898                            "nl80211: bridge must be set to delete an ip neigh");
8899                 return -1;
8900         }
8901
8902         if (!drv->rtnl_sk) {
8903                 wpa_printf(MSG_DEBUG,
8904                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8905                 return -1;
8906         }
8907
8908         rn = rtnl_neigh_alloc();
8909         if (rn == NULL)
8910                 return -ENOMEM;
8911
8912         /* set the destination ip address for neigh */
8913         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8914         if (nl_ipaddr == NULL) {
8915                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8916                 res = -ENOMEM;
8917                 goto errout;
8918         }
8919         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8920         if (res) {
8921                 wpa_printf(MSG_DEBUG,
8922                            "nl80211: neigh set destination addr failed");
8923                 goto errout;
8924         }
8925
8926         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8927
8928         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8929         if (res) {
8930                 wpa_printf(MSG_DEBUG,
8931                            "nl80211: Deleting bridge ip neigh failed: %s",
8932                            strerror(errno));
8933         }
8934 errout:
8935         if (nl_ipaddr)
8936                 nl_addr_put(nl_ipaddr);
8937         if (rn)
8938                 rtnl_neigh_put(rn);
8939         return res;
8940 #else /* CONFIG_LIBNL3_ROUTE */
8941         return -1;
8942 #endif /* CONFIG_LIBNL3_ROUTE */
8943 }
8944
8945
8946 static int linux_write_system_file(const char *path, unsigned int val)
8947 {
8948         char buf[50];
8949         int fd, len;
8950
8951         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8952         if (len < 0)
8953                 return -1;
8954
8955         fd = open(path, O_WRONLY);
8956         if (fd < 0)
8957                 return -1;
8958
8959         if (write(fd, buf, len) < 0) {
8960                 wpa_printf(MSG_DEBUG,
8961                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8962                            path, val);
8963                 close(fd);
8964                 return -1;
8965         }
8966         close(fd);
8967
8968         return 0;
8969 }
8970
8971
8972 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8973 {
8974         switch (attr) {
8975         case DRV_BR_PORT_ATTR_PROXYARP:
8976                 return "proxyarp";
8977         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8978                 return "hairpin_mode";
8979         }
8980
8981         return NULL;
8982 }
8983
8984
8985 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8986                                        unsigned int val)
8987 {
8988         struct i802_bss *bss = priv;
8989         char path[128];
8990         const char *attr_txt;
8991
8992         attr_txt = drv_br_port_attr_str(attr);
8993         if (attr_txt == NULL)
8994                 return -EINVAL;
8995
8996         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8997                     bss->ifname, attr_txt);
8998
8999         if (linux_write_system_file(path, val))
9000                 return -1;
9001
9002         return 0;
9003 }
9004
9005
9006 static const char * drv_br_net_param_str(enum drv_br_net_param param)
9007 {
9008         switch (param) {
9009         case DRV_BR_NET_PARAM_GARP_ACCEPT:
9010                 return "arp_accept";
9011         }
9012
9013         return NULL;
9014 }
9015
9016
9017 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
9018                                        unsigned int val)
9019 {
9020         struct i802_bss *bss = priv;
9021         char path[128];
9022         const char *param_txt;
9023         int ip_version = 4;
9024
9025         param_txt = drv_br_net_param_str(param);
9026         if (param_txt == NULL)
9027                 return -EINVAL;
9028
9029         switch (param) {
9030                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
9031                         ip_version = 4;
9032                         break;
9033                 default:
9034                         return -EINVAL;
9035         }
9036
9037         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
9038                     ip_version, bss->brname, param_txt);
9039
9040         if (linux_write_system_file(path, val))
9041                 return -1;
9042
9043         return 0;
9044 }
9045
9046
9047 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
9048 {
9049         switch (hw_mode) {
9050         case HOSTAPD_MODE_IEEE80211B:
9051                 return QCA_ACS_MODE_IEEE80211B;
9052         case HOSTAPD_MODE_IEEE80211G:
9053                 return QCA_ACS_MODE_IEEE80211G;
9054         case HOSTAPD_MODE_IEEE80211A:
9055                 return QCA_ACS_MODE_IEEE80211A;
9056         case HOSTAPD_MODE_IEEE80211AD:
9057                 return QCA_ACS_MODE_IEEE80211AD;
9058         default:
9059                 return -1;
9060         }
9061 }
9062
9063
9064 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
9065 {
9066         struct i802_bss *bss = priv;
9067         struct wpa_driver_nl80211_data *drv = bss->drv;
9068         struct nl_msg *msg;
9069         struct nlattr *data;
9070         int ret;
9071         int mode;
9072
9073         mode = hw_mode_to_qca_acs(params->hw_mode);
9074         if (mode < 0)
9075                 return -1;
9076
9077         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9078             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9079             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9080                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
9081             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9082             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
9083             (params->ht_enabled &&
9084              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
9085             (params->ht40_enabled &&
9086              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
9087                 nlmsg_free(msg);
9088                 return -ENOBUFS;
9089         }
9090         nla_nest_end(msg, data);
9091
9092         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9093         if (ret) {
9094                 wpa_printf(MSG_DEBUG,
9095                            "nl80211: Failed to invoke driver ACS function: %s",
9096                            strerror(errno));
9097         }
9098         return ret;
9099 }
9100
9101
9102 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9103         .name = "nl80211",
9104         .desc = "Linux nl80211/cfg80211",
9105         .get_bssid = wpa_driver_nl80211_get_bssid,
9106         .get_ssid = wpa_driver_nl80211_get_ssid,
9107         .set_key = driver_nl80211_set_key,
9108         .scan2 = driver_nl80211_scan2,
9109         .sched_scan = wpa_driver_nl80211_sched_scan,
9110         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9111         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9112         .deauthenticate = driver_nl80211_deauthenticate,
9113         .authenticate = driver_nl80211_authenticate,
9114         .associate = wpa_driver_nl80211_associate,
9115         .global_init = nl80211_global_init,
9116         .global_deinit = nl80211_global_deinit,
9117         .init2 = wpa_driver_nl80211_init,
9118         .deinit = driver_nl80211_deinit,
9119         .get_capa = wpa_driver_nl80211_get_capa,
9120         .set_operstate = wpa_driver_nl80211_set_operstate,
9121         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9122         .set_country = wpa_driver_nl80211_set_country,
9123         .get_country = wpa_driver_nl80211_get_country,
9124         .set_ap = wpa_driver_nl80211_set_ap,
9125         .set_acl = wpa_driver_nl80211_set_acl,
9126         .if_add = wpa_driver_nl80211_if_add,
9127         .if_remove = driver_nl80211_if_remove,
9128         .send_mlme = driver_nl80211_send_mlme,
9129         .get_hw_feature_data = nl80211_get_hw_feature_data,
9130         .sta_add = wpa_driver_nl80211_sta_add,
9131         .sta_remove = driver_nl80211_sta_remove,
9132         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9133         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9134         .hapd_init = i802_init,
9135         .hapd_deinit = i802_deinit,
9136         .set_wds_sta = i802_set_wds_sta,
9137         .get_seqnum = i802_get_seqnum,
9138         .flush = i802_flush,
9139         .get_inact_sec = i802_get_inact_sec,
9140         .sta_clear_stats = i802_sta_clear_stats,
9141         .set_rts = i802_set_rts,
9142         .set_frag = i802_set_frag,
9143         .set_tx_queue_params = i802_set_tx_queue_params,
9144         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9145         .sta_deauth = i802_sta_deauth,
9146         .sta_disassoc = i802_sta_disassoc,
9147         .read_sta_data = driver_nl80211_read_sta_data,
9148         .set_freq = i802_set_freq,
9149         .send_action = driver_nl80211_send_action,
9150         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9151         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9152         .cancel_remain_on_channel =
9153         wpa_driver_nl80211_cancel_remain_on_channel,
9154         .probe_req_report = driver_nl80211_probe_req_report,
9155         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9156         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9157         .resume = wpa_driver_nl80211_resume,
9158         .send_ft_action = nl80211_send_ft_action,
9159         .signal_monitor = nl80211_signal_monitor,
9160         .signal_poll = nl80211_signal_poll,
9161         .send_frame = nl80211_send_frame,
9162         .shared_freq = wpa_driver_nl80211_shared_freq,
9163         .set_param = nl80211_set_param,
9164         .get_radio_name = nl80211_get_radio_name,
9165         .add_pmkid = nl80211_add_pmkid,
9166         .remove_pmkid = nl80211_remove_pmkid,
9167         .flush_pmkid = nl80211_flush_pmkid,
9168         .set_rekey_info = nl80211_set_rekey_info,
9169         .poll_client = nl80211_poll_client,
9170         .set_p2p_powersave = nl80211_set_p2p_powersave,
9171         .start_dfs_cac = nl80211_start_radar_detection,
9172         .stop_ap = wpa_driver_nl80211_stop_ap,
9173 #ifdef CONFIG_TDLS
9174         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9175         .tdls_oper = nl80211_tdls_oper,
9176 #endif /* CONFIG_TDLS */
9177         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9178         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9179         .get_survey = wpa_driver_nl80211_get_survey,
9180         .status = wpa_driver_nl80211_status,
9181         .switch_channel = nl80211_switch_channel,
9182 #ifdef ANDROID_P2P
9183         .set_noa = wpa_driver_set_p2p_noa,
9184         .get_noa = wpa_driver_get_p2p_noa,
9185         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9186 #endif /* ANDROID_P2P */
9187 #ifdef ANDROID
9188         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9189 #endif /* ANDROID */
9190         .vendor_cmd = nl80211_vendor_cmd,
9191         .set_qos_map = nl80211_set_qos_map,
9192         .set_wowlan = nl80211_set_wowlan,
9193         .roaming = nl80211_roaming,
9194         .set_mac_addr = nl80211_set_mac_addr,
9195 #ifdef CONFIG_MESH
9196         .init_mesh = wpa_driver_nl80211_init_mesh,
9197         .join_mesh = wpa_driver_nl80211_join_mesh,
9198         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9199 #endif /* CONFIG_MESH */
9200         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9201         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9202         .br_port_set_attr = wpa_driver_br_port_set_attr,
9203         .br_set_net_param = wpa_driver_br_set_net_param,
9204         .add_tx_ts = nl80211_add_ts,
9205         .del_tx_ts = nl80211_del_ts,
9206         .do_acs = wpa_driver_do_acs,
9207 };