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         cb = nl_cb_clone(global->nl_cb);
 313         if (!cb)
 314                 goto out;
 315
 316         err = nl_send_auto_complete(nl_handle, msg);
 317         if (err < 0)
 318                 goto out;
 319
 320         err = 1;
 321
 322         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 323         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 324         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 325
 326         if (valid_handler)
 327                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 328                           valid_handler, valid_data);
 329
 330         while (err > 0) {
 331                 int res = nl_recvmsgs(nl_handle, cb);
 332                 if (res < 0) {
 333                         wpa_printf(MSG_INFO,
 334                                    "nl80211: %s->nl_recvmsgs failed: %d",
 335                                    __func__, res);
 336                 }
 337         }
 338  out:
 339         nl_cb_put(cb);
 340         nlmsg_free(msg);
 341         return err;
 342 }
 343
 344
 345 static int send_and_recv_msgs_global(struct nl80211_global *global,
 346                                      struct nl_msg *msg,
 347                                      int (*valid_handler)(struct nl_msg *, void *),
 348                                      void *valid_data)
 349 {
 350         return send_and_recv(global, global->nl, msg, valid_handler,
 351                              valid_data);
 352 }
 353
 354
 355 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 356                        struct nl_msg *msg,
 357                        int (*valid_handler)(struct nl_msg *, void *),
 358                        void *valid_data)
 359 {
 360         return send_and_recv(drv->global, drv->global->nl, msg,
 361                              valid_handler, valid_data);
 362 }
 363
 364
 365 struct family_data {
 366         const char *group;
 367         int id;
 368 };
 369
 370
 371 int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 372 {
 373         if (bss->wdev_id_set)
 374                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 375         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 376 }
 377
 378
 379 static int family_handler(struct nl_msg *msg, void *arg)
 380 {
 381         struct family_data *res = arg;
 382         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 383         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 384         struct nlattr *mcgrp;
 385         int i;
 386
 387         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 388                   genlmsg_attrlen(gnlh, 0), NULL);
 389         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 390                 return NL_SKIP;
 391
 392         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 393                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 394                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 395                           nla_len(mcgrp), NULL);
 396                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 397                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 398                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 399                                res->group,
 400                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 401                         continue;
 402                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 403                 break;
 404         };
 405
 406         return NL_SKIP;
 407 }
 408
 409
 410 static int nl_get_multicast_id(struct nl80211_global *global,
 411                                const char *family, const char *group)
 412 {
 413         struct nl_msg *msg;
 414         int ret;
 415         struct family_data res = { group, -ENOENT };
 416
 417         msg = nlmsg_alloc();
 418         if (!msg)
 419                 return -ENOMEM;
 420         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 421                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 422             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 423                 nlmsg_free(msg);
 424                 return -1;
 425         }
 426
 427         ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
 428         if (ret == 0)
 429                 ret = res.id;
 430         return ret;
 431 }
 432
 433
 434 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 435                    struct nl_msg *msg, int flags, uint8_t cmd)
 436 {
 437         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 438                            0, flags, cmd, 0);
 439 }
 440
 441
 442 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 443 {
 444         struct nl_msg *msg;
 445
 446         msg = nlmsg_alloc();
 447         if (!msg)
 448                 return NULL;
 449
 450         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 451             nl80211_set_iface_id(msg, bss) < 0) {
 452                 nlmsg_free(msg);
 453                 return NULL;
 454         }
 455
 456         return msg;
 457 }
 458
 459
 460 static struct nl_msg *
 461 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 462                     int flags, uint8_t cmd)
 463 {
 464         struct nl_msg *msg;
 465
 466         msg = nlmsg_alloc();
 467         if (!msg)
 468                 return NULL;
 469
 470         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 471             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 472                 nlmsg_free(msg);
 473                 return NULL;
 474         }
 475
 476         return msg;
 477 }
 478
 479
 480 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 481                                 uint8_t cmd)
 482 {
 483         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 484 }
 485
 486
 487 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 488 {
 489         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 490 }
 491
 492
 493 struct wiphy_idx_data {
 494         int wiphy_idx;
 495         enum nl80211_iftype nlmode;
 496         u8 *macaddr;
 497 };
 498
 499
 500 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 501 {
 502         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 503         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 504         struct wiphy_idx_data *info = arg;
 505
 506         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 507                   genlmsg_attrlen(gnlh, 0), NULL);
 508
 509         if (tb[NL80211_ATTR_WIPHY])
 510                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 511
 512         if (tb[NL80211_ATTR_IFTYPE])
 513                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 514
 515         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 516                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 517                           ETH_ALEN);
 518
 519         return NL_SKIP;
 520 }
 521
 522
 523 int nl80211_get_wiphy_index(struct i802_bss *bss)
 524 {
 525         struct nl_msg *msg;
 526         struct wiphy_idx_data data = {
 527                 .wiphy_idx = -1,
 528                 .macaddr = NULL,
 529         };
 530
 531         msg = nlmsg_alloc();
 532         if (!msg)
 533                 return NL80211_IFTYPE_UNSPECIFIED;
 534
 535         if (!nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE) ||
 536             nl80211_set_iface_id(msg, bss) < 0) {
 537                 nlmsg_free(msg);
 538                 return -1;
 539         }
 540
 541         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 542                 return data.wiphy_idx;
 543         return -1;
 544 }
 545
 546
 547 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 548 {
 549         struct nl_msg *msg;
 550         struct wiphy_idx_data data = {
 551                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 552                 .macaddr = NULL,
 553         };
 554
 555         msg = nlmsg_alloc();
 556         if (!msg)
 557                 return -1;
 558
 559         if (!nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE) ||
 560             nl80211_set_iface_id(msg, bss) < 0) {
 561                 nlmsg_free(msg);
 562                 return NL80211_IFTYPE_UNSPECIFIED;
 563         }
 564
 565         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 566                 return data.nlmode;
 567         return NL80211_IFTYPE_UNSPECIFIED;
 568 }
 569
 570
 571 static int nl80211_get_macaddr(struct i802_bss *bss)
 572 {
 573         struct nl_msg *msg;
 574         struct wiphy_idx_data data = {
 575                 .macaddr = bss->addr,
 576         };
 577
 578         msg = nlmsg_alloc();
 579         if (!msg)
 580                 return -1;
 581
 582         if (!nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE) ||
 583             nl80211_set_iface_id(msg, bss) < 0) {
 584                 nlmsg_free(msg);
 585                 return -1;
 586         }
 587
 588         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 589 }
 590
 591
 592 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 593                                     struct nl80211_wiphy_data *w)
 594 {
 595         struct nl_msg *msg;
 596         int ret;
 597
 598         msg = nlmsg_alloc();
 599         if (!msg)
 600                 return -1;
 601
 602         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 603             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 604                 nlmsg_free(msg);
 605                 return -1;
 606         }
 607
 608         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 609         if (ret) {
 610                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 611                            "failed: ret=%d (%s)",
 612                            ret, strerror(-ret));
 613         }
 614         return ret;
 615 }
 616
 617
 618 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 619 {
 620         struct nl80211_wiphy_data *w = eloop_ctx;
 621         int res;
 622
 623         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 624
 625         res = nl_recvmsgs(handle, w->nl_cb);
 626         if (res < 0) {
 627                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 628                            __func__, res);
 629         }
 630 }
 631
 632
 633 static int process_beacon_event(struct nl_msg *msg, void *arg)
 634 {
 635         struct nl80211_wiphy_data *w = arg;
 636         struct wpa_driver_nl80211_data *drv;
 637         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 638         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 639         union wpa_event_data event;
 640
 641         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 642                   genlmsg_attrlen(gnlh, 0), NULL);
 643
 644         if (gnlh->cmd != NL80211_CMD_FRAME) {
 645                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 646                            gnlh->cmd);
 647                 return NL_SKIP;
 648         }
 649
 650         if (!tb[NL80211_ATTR_FRAME])
 651                 return NL_SKIP;
 652
 653         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 654                          wiphy_list) {
 655                 os_memset(&event, 0, sizeof(event));
 656                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 657                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 658                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 659         }
 660
 661         return NL_SKIP;
 662 }
 663
 664
 665 static struct nl80211_wiphy_data *
 666 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 667 {
 668         static DEFINE_DL_LIST(nl80211_wiphys);
 669         struct nl80211_wiphy_data *w;
 670         int wiphy_idx, found = 0;
 671         struct i802_bss *tmp_bss;
 672
 673         if (bss->wiphy_data != NULL)
 674                 return bss->wiphy_data;
 675
 676         wiphy_idx = nl80211_get_wiphy_index(bss);
 677
 678         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 679                 if (w->wiphy_idx == wiphy_idx)
 680                         goto add;
 681         }
 682
 683         /* alloc new one */
 684         w = os_zalloc(sizeof(*w));
 685         if (w == NULL)
 686                 return NULL;
 687         w->wiphy_idx = wiphy_idx;
 688         dl_list_init(&w->bsss);
 689         dl_list_init(&w->drvs);
 690
 691         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 692         if (!w->nl_cb) {
 693                 os_free(w);
 694                 return NULL;
 695         }
 696         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 697         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 698                   w);
 699
 700         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 701                                          "wiphy beacons");
 702         if (w->nl_beacons == NULL) {
 703                 os_free(w);
 704                 return NULL;
 705         }
 706
 707         if (nl80211_register_beacons(bss->drv, w)) {
 708                 nl_destroy_handles(&w->nl_beacons);
 709                 os_free(w);
 710                 return NULL;
 711         }
 712
 713         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 714
 715         dl_list_add(&nl80211_wiphys, &w->list);
 716
 717 add:
 718         /* drv entry for this bss already there? */
 719         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 720                 if (tmp_bss->drv == bss->drv) {
 721                         found = 1;
 722                         break;
 723                 }
 724         }
 725         /* if not add it */
 726         if (!found)
 727                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 728
 729         dl_list_add(&w->bsss, &bss->wiphy_list);
 730         bss->wiphy_data = w;
 731         return w;
 732 }
 733
 734
 735 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 736 {
 737         struct nl80211_wiphy_data *w = bss->wiphy_data;
 738         struct i802_bss *tmp_bss;
 739         int found = 0;
 740
 741         if (w == NULL)
 742                 return;
 743         bss->wiphy_data = NULL;
 744         dl_list_del(&bss->wiphy_list);
 745
 746         /* still any for this drv present? */
 747         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 748                 if (tmp_bss->drv == bss->drv) {
 749                         found = 1;
 750                         break;
 751                 }
 752         }
 753         /* if not remove it */
 754         if (!found)
 755                 dl_list_del(&bss->drv->wiphy_list);
 756
 757         if (!dl_list_empty(&w->bsss))
 758                 return;
 759
 760         nl80211_destroy_eloop_handle(&w->nl_beacons);
 761
 762         nl_cb_put(w->nl_cb);
 763         dl_list_del(&w->list);
 764         os_free(w);
 765 }
 766
 767
 768 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 769 {
 770         struct i802_bss *bss = priv;
 771         struct wpa_driver_nl80211_data *drv = bss->drv;
 772         if (!drv->associated)
 773                 return -1;
 774         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 775         return 0;
 776 }
 777
 778
 779 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 780 {
 781         struct i802_bss *bss = priv;
 782         struct wpa_driver_nl80211_data *drv = bss->drv;
 783         if (!drv->associated)
 784                 return -1;
 785         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 786         return drv->ssid_len;
 787 }
 788
 789
 790 static void wpa_driver_nl80211_event_newlink(
 791         struct wpa_driver_nl80211_data *drv, char *ifname)
 792 {
 793         union wpa_event_data event;
 794
 795         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 796                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 797                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 798                                    drv->first_bss->ifname);
 799                         return;
 800                 }
 801                 if (!drv->if_removed)
 802                         return;
 803                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 804                            drv->first_bss->ifname);
 805                 drv->if_removed = 0;
 806         }
 807
 808         os_memset(&event, 0, sizeof(event));
 809         os_strlcpy(event.interface_status.ifname, ifname,
 810                    sizeof(event.interface_status.ifname));
 811         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 812         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 813 }
 814
 815
 816 static void wpa_driver_nl80211_event_dellink(
 817         struct wpa_driver_nl80211_data *drv, char *ifname)
 818 {
 819         union wpa_event_data event;
 820
 821         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 822                 if (drv->if_removed) {
 823                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 824                                    ifname);
 825                         return;
 826                 }
 827                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 828                            ifname);
 829                 drv->if_removed = 1;
 830         } else {
 831                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 832                            ifname);
 833         }
 834
 835         os_memset(&event, 0, sizeof(event));
 836         os_strlcpy(event.interface_status.ifname, ifname,
 837                    sizeof(event.interface_status.ifname));
 838         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 839         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 840 }
 841
 842
 843 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 844                                          u8 *buf, size_t len)
 845 {
 846         int attrlen, rta_len;
 847         struct rtattr *attr;
 848
 849         attrlen = len;
 850         attr = (struct rtattr *) buf;
 851
 852         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 853         while (RTA_OK(attr, attrlen)) {
 854                 if (attr->rta_type == IFLA_IFNAME) {
 855                         if (os_strcmp(((char *) attr) + rta_len,
 856                                       drv->first_bss->ifname) == 0)
 857                                 return 1;
 858                         else
 859                                 break;
 860                 }
 861                 attr = RTA_NEXT(attr, attrlen);
 862         }
 863
 864         return 0;
 865 }
 866
 867
 868 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 869                                           int ifindex, u8 *buf, size_t len)
 870 {
 871         if (drv->ifindex == ifindex)
 872                 return 1;
 873
 874         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 875                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 876                            "interface");
 877                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 878                 return 1;
 879         }
 880
 881         return 0;
 882 }
 883
 884
 885 static struct wpa_driver_nl80211_data *
 886 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 887 {
 888         struct wpa_driver_nl80211_data *drv;
 889         dl_list_for_each(drv, &global->interfaces,
 890                          struct wpa_driver_nl80211_data, list) {
 891                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 892                     have_ifidx(drv, idx))
 893                         return drv;
 894         }
 895         return NULL;
 896 }
 897
 898
 899 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 900                                                  struct ifinfomsg *ifi,
 901                                                  u8 *buf, size_t len)
 902 {
 903         struct nl80211_global *global = ctx;
 904         struct wpa_driver_nl80211_data *drv;
 905         int attrlen;
 906         struct rtattr *attr;
 907         u32 brid = 0;
 908         char namebuf[IFNAMSIZ];
 909         char ifname[IFNAMSIZ + 1];
 910         char extra[100], *pos, *end;
 911
 912         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 913         if (!drv) {
 914                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 915                            ifi->ifi_index);
 916                 return;
 917         }
 918
 919         extra[0] = '\0';
 920         pos = extra;
 921         end = pos + sizeof(extra);
 922         ifname[0] = '\0';
 923
 924         attrlen = len;
 925         attr = (struct rtattr *) buf;
 926         while (RTA_OK(attr, attrlen)) {
 927                 switch (attr->rta_type) {
 928                 case IFLA_IFNAME:
 929                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 930                                 break;
 931                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 932                         ifname[RTA_PAYLOAD(attr)] = '\0';
 933                         break;
 934                 case IFLA_MASTER:
 935                         brid = nla_get_u32((struct nlattr *) attr);
 936                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 937                         break;
 938                 case IFLA_WIRELESS:
 939                         pos += os_snprintf(pos, end - pos, " wext");
 940                         break;
 941                 case IFLA_OPERSTATE:
 942                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 943                                            nla_get_u32((struct nlattr *) attr));
 944                         break;
 945                 case IFLA_LINKMODE:
 946                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 947                                            nla_get_u32((struct nlattr *) attr));
 948                         break;
 949                 }
 950                 attr = RTA_NEXT(attr, attrlen);
 951         }
 952         extra[sizeof(extra) - 1] = '\0';
 953
 954         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 955                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 956                    ifi->ifi_flags,
 957                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 958                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 959                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 960                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 961
 962         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 963                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 964                     linux_iface_up(drv->global->ioctl_sock,
 965                                    drv->first_bss->ifname) > 0) {
 966                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 967                                    "event since interface %s is up", namebuf);
 968                         drv->ignore_if_down_event = 0;
 969                         return;
 970                 }
 971                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 972                 if (drv->ignore_if_down_event) {
 973                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 974                                    "event generated by mode change");
 975                         drv->ignore_if_down_event = 0;
 976                 } else {
 977                         drv->if_disabled = 1;
 978                         wpa_supplicant_event(drv->ctx,
 979                                              EVENT_INTERFACE_DISABLED, NULL);
 980
 981                         /*
 982                          * Try to get drv again, since it may be removed as
 983                          * part of the EVENT_INTERFACE_DISABLED handling for
 984                          * dynamic interfaces
 985                          */
 986                         drv = nl80211_find_drv(global, ifi->ifi_index,
 987                                                buf, len);
 988                         if (!drv)
 989                                 return;
 990                 }
 991         }
 992
 993         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 994                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 995                     linux_iface_up(drv->global->ioctl_sock,
 996                                    drv->first_bss->ifname) == 0) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 998                                    "event since interface %s is down",
 999                                    namebuf);
1000                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
1001                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1002                                    "event since interface %s does not exist",
1003                                    drv->first_bss->ifname);
1004                 } else if (drv->if_removed) {
1005                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1006                                    "event since interface %s is marked "
1007                                    "removed", drv->first_bss->ifname);
1008                 } else {
1009                         struct i802_bss *bss;
1010                         u8 addr[ETH_ALEN];
1011
1012                         /* Re-read MAC address as it may have changed */
1013                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1014                         if (bss &&
1015                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1016                                                bss->ifname, addr) < 0) {
1017                                 wpa_printf(MSG_DEBUG,
1018                                            "nl80211: %s: failed to re-read MAC address",
1019                                            bss->ifname);
1020                         } else if (bss &&
1021                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1022                                 wpa_printf(MSG_DEBUG,
1023                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1024                                            MACSTR " to " MACSTR,
1025                                            ifi->ifi_index, bss->ifname,
1026                                            MAC2STR(bss->addr),
1027                                            MAC2STR(addr));
1028                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1029                         }
1030
1031                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1032                         drv->if_disabled = 0;
1033                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1034                                              NULL);
1035                 }
1036         }
1037
1038         /*
1039          * Some drivers send the association event before the operup event--in
1040          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1041          * fails. This will hit us when wpa_supplicant does not need to do
1042          * IEEE 802.1X authentication
1043          */
1044         if (drv->operstate == 1 &&
1045             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1046             !(ifi->ifi_flags & IFF_RUNNING)) {
1047                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1048                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1049                                        -1, IF_OPER_UP);
1050         }
1051
1052         if (ifname[0])
1053                 wpa_driver_nl80211_event_newlink(drv, ifname);
1054
1055         if (ifi->ifi_family == AF_BRIDGE && brid) {
1056                 struct i802_bss *bss;
1057
1058                 /* device has been added to bridge */
1059                 if_indextoname(brid, namebuf);
1060                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1061                            brid, namebuf);
1062                 add_ifidx(drv, brid);
1063
1064                 for (bss = drv->first_bss; bss; bss = bss->next) {
1065                         if (os_strcmp(ifname, bss->ifname) == 0) {
1066                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1067                                 break;
1068                         }
1069                 }
1070         }
1071 }
1072
1073
1074 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1075                                                  struct ifinfomsg *ifi,
1076                                                  u8 *buf, size_t len)
1077 {
1078         struct nl80211_global *global = ctx;
1079         struct wpa_driver_nl80211_data *drv;
1080         int attrlen;
1081         struct rtattr *attr;
1082         u32 brid = 0;
1083         char ifname[IFNAMSIZ + 1];
1084         char extra[100], *pos, *end;
1085
1086         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1087         if (!drv) {
1088                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1089                            ifi->ifi_index);
1090                 return;
1091         }
1092
1093         extra[0] = '\0';
1094         pos = extra;
1095         end = pos + sizeof(extra);
1096         ifname[0] = '\0';
1097
1098         attrlen = len;
1099         attr = (struct rtattr *) buf;
1100         while (RTA_OK(attr, attrlen)) {
1101                 switch (attr->rta_type) {
1102                 case IFLA_IFNAME:
1103                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1104                                 break;
1105                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1106                         ifname[RTA_PAYLOAD(attr)] = '\0';
1107                         break;
1108                 case IFLA_MASTER:
1109                         brid = nla_get_u32((struct nlattr *) attr);
1110                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1111                         break;
1112                 case IFLA_OPERSTATE:
1113                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1114                                            nla_get_u32((struct nlattr *) attr));
1115                         break;
1116                 case IFLA_LINKMODE:
1117                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1118                                            nla_get_u32((struct nlattr *) attr));
1119                         break;
1120                 }
1121                 attr = RTA_NEXT(attr, attrlen);
1122         }
1123         extra[sizeof(extra) - 1] = '\0';
1124
1125         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1126                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1127                    ifi->ifi_flags,
1128                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1129                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1130                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1131                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1132
1133         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1134                 wpa_driver_nl80211_event_dellink(drv, ifname);
1135
1136         if (ifi->ifi_family == AF_BRIDGE && brid) {
1137                 /* device has been removed from bridge */
1138                 char namebuf[IFNAMSIZ];
1139                 if_indextoname(brid, namebuf);
1140                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1141                            "%s", brid, namebuf);
1142                 del_ifidx(drv, brid);
1143         }
1144 }
1145
1146
1147 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1148 {
1149         struct nl_msg *msg;
1150         int ret;
1151         struct nl80211_bss_info_arg arg;
1152
1153         os_memset(&arg, 0, sizeof(arg));
1154         msg = nlmsg_alloc();
1155         if (!msg)
1156                 return drv->assoc_freq;
1157
1158         if (!nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN) ||
1159             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex)) {
1160                 nlmsg_free(msg);
1161                 return drv->assoc_freq;
1162         }
1163
1164         arg.drv = drv;
1165         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1166         if (ret == 0) {
1167                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1168                         arg.ibss_freq : arg.assoc_freq;
1169                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1170                            "associated BSS from scan results: %u MHz", freq);
1171                 if (freq)
1172                         drv->assoc_freq = freq;
1173                 return drv->assoc_freq;
1174         }
1175         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1176                    "(%s)", ret, strerror(-ret));
1177         return drv->assoc_freq;
1178 }
1179
1180
1181 static int get_link_signal(struct nl_msg *msg, void *arg)
1182 {
1183         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1184         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1185         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1186         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1187                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1188                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1189         };
1190         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1191         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1192                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1193                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1194                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1195                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1196         };
1197         struct wpa_signal_info *sig_change = arg;
1198
1199         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1200                   genlmsg_attrlen(gnlh, 0), NULL);
1201         if (!tb[NL80211_ATTR_STA_INFO] ||
1202             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1203                              tb[NL80211_ATTR_STA_INFO], policy))
1204                 return NL_SKIP;
1205         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1206                 return NL_SKIP;
1207
1208         sig_change->current_signal =
1209                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1210
1211         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1212                 sig_change->avg_signal =
1213                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1214         else
1215                 sig_change->avg_signal = 0;
1216
1217         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1218                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1219                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1220                                      rate_policy)) {
1221                         sig_change->current_txrate = 0;
1222                 } else {
1223                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1224                                 sig_change->current_txrate =
1225                                         nla_get_u16(rinfo[
1226                                              NL80211_RATE_INFO_BITRATE]) * 100;
1227                         }
1228                 }
1229         }
1230
1231         return NL_SKIP;
1232 }
1233
1234
1235 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1236                             struct wpa_signal_info *sig)
1237 {
1238         struct nl_msg *msg;
1239
1240         sig->current_signal = -9999;
1241         sig->current_txrate = 0;
1242
1243         msg = nlmsg_alloc();
1244         if (!msg)
1245                 return -ENOMEM;
1246
1247         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION) ||
1248             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
1249             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1250                 nlmsg_free(msg);
1251                 return -ENOBUFS;
1252         }
1253
1254         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1255 }
1256
1257
1258 static int get_link_noise(struct nl_msg *msg, void *arg)
1259 {
1260         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1261         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1262         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1263         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1264                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1265                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1266         };
1267         struct wpa_signal_info *sig_change = arg;
1268
1269         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1270                   genlmsg_attrlen(gnlh, 0), NULL);
1271
1272         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1273                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1274                 return NL_SKIP;
1275         }
1276
1277         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1278                              tb[NL80211_ATTR_SURVEY_INFO],
1279                              survey_policy)) {
1280                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1281                            "attributes!");
1282                 return NL_SKIP;
1283         }
1284
1285         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1286                 return NL_SKIP;
1287
1288         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1289             sig_change->frequency)
1290                 return NL_SKIP;
1291
1292         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1293                 return NL_SKIP;
1294
1295         sig_change->current_noise =
1296                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1297
1298         return NL_SKIP;
1299 }
1300
1301
1302 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1303                            struct wpa_signal_info *sig_change)
1304 {
1305         struct nl_msg *msg;
1306
1307         sig_change->current_noise = 9999;
1308         sig_change->frequency = drv->assoc_freq;
1309
1310         msg = nlmsg_alloc();
1311         if (!msg)
1312                 return -ENOMEM;
1313
1314         if (!nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY) ||
1315             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex)) {
1316                 nlmsg_free(msg);
1317                 return -ENOBUFS;
1318         }
1319
1320         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1321 }
1322
1323
1324 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1325 {
1326         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1327         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1328         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1329         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1330                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1331                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1332         };
1333         struct wpa_scan_results *scan_results = arg;
1334         struct wpa_scan_res *scan_res;
1335         size_t i;
1336
1337         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1338                   genlmsg_attrlen(gnlh, 0), NULL);
1339
1340         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1341                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1342                 return NL_SKIP;
1343         }
1344
1345         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1346                              tb[NL80211_ATTR_SURVEY_INFO],
1347                              survey_policy)) {
1348                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1349                            "attributes");
1350                 return NL_SKIP;
1351         }
1352
1353         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1354                 return NL_SKIP;
1355
1356         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1357                 return NL_SKIP;
1358
1359         for (i = 0; i < scan_results->num; ++i) {
1360                 scan_res = scan_results->res[i];
1361                 if (!scan_res)
1362                         continue;
1363                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1364                     scan_res->freq)
1365                         continue;
1366                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1367                         continue;
1368                 scan_res->noise = (s8)
1369                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1370                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1371         }
1372
1373         return NL_SKIP;
1374 }
1375
1376
1377 static int nl80211_get_noise_for_scan_results(
1378         struct wpa_driver_nl80211_data *drv,
1379         struct wpa_scan_results *scan_res)
1380 {
1381         struct nl_msg *msg;
1382
1383         msg = nlmsg_alloc();
1384         if (!msg)
1385                 return -ENOMEM;
1386
1387         if (!nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY) ||
1388             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex)) {
1389                 nlmsg_free(msg);
1390                 return -ENOBUFS;
1391         }
1392
1393         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1394                                   scan_res);
1395 }
1396
1397
1398 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1399                                              void *handle)
1400 {
1401         struct nl_cb *cb = eloop_ctx;
1402         int res;
1403
1404         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1405
1406         res = nl_recvmsgs(handle, cb);
1407         if (res < 0) {
1408                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1409                            __func__, res);
1410         }
1411 }
1412
1413
1414 /**
1415  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1416  * @priv: driver_nl80211 private data
1417  * @alpha2_arg: country to which to switch to
1418  * Returns: 0 on success, -1 on failure
1419  *
1420  * This asks nl80211 to set the regulatory domain for given
1421  * country ISO / IEC alpha2.
1422  */
1423 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1424 {
1425         struct i802_bss *bss = priv;
1426         struct wpa_driver_nl80211_data *drv = bss->drv;
1427         char alpha2[3];
1428         struct nl_msg *msg;
1429
1430         msg = nlmsg_alloc();
1431         if (!msg)
1432                 return -ENOMEM;
1433
1434         alpha2[0] = alpha2_arg[0];
1435         alpha2[1] = alpha2_arg[1];
1436         alpha2[2] = '\0';
1437
1438         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1439             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1440                 nlmsg_free(msg);
1441                 return -EINVAL;
1442         }
1443         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1444                 return -EINVAL;
1445         return 0;
1446 }
1447
1448
1449 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1450 {
1451         char *alpha2 = arg;
1452         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1453         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1454
1455         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1456                   genlmsg_attrlen(gnlh, 0), NULL);
1457         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1458                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1459                 return NL_SKIP;
1460         }
1461         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1462         return NL_SKIP;
1463 }
1464
1465
1466 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1467 {
1468         struct i802_bss *bss = priv;
1469         struct wpa_driver_nl80211_data *drv = bss->drv;
1470         struct nl_msg *msg;
1471         int ret;
1472
1473         msg = nlmsg_alloc();
1474         if (!msg)
1475                 return -ENOMEM;
1476
1477         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1478         alpha2[0] = '\0';
1479         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1480         if (!alpha2[0])
1481                 ret = -1;
1482
1483         return ret;
1484 }
1485
1486
1487 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1488 {
1489         int ret;
1490
1491         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1492         if (global->nl_cb == NULL) {
1493                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1494                            "callbacks");
1495                 return -1;
1496         }
1497
1498         global->nl = nl_create_handle(global->nl_cb, "nl");
1499         if (global->nl == NULL)
1500                 goto err;
1501
1502         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1503         if (global->nl80211_id < 0) {
1504                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1505                            "found");
1506                 goto err;
1507         }
1508
1509         global->nl_event = nl_create_handle(global->nl_cb, "event");
1510         if (global->nl_event == NULL)
1511                 goto err;
1512
1513         ret = nl_get_multicast_id(global, "nl80211", "scan");
1514         if (ret >= 0)
1515                 ret = nl_socket_add_membership(global->nl_event, ret);
1516         if (ret < 0) {
1517                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1518                            "membership for scan events: %d (%s)",
1519                            ret, strerror(-ret));
1520                 goto err;
1521         }
1522
1523         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1524         if (ret >= 0)
1525                 ret = nl_socket_add_membership(global->nl_event, ret);
1526         if (ret < 0) {
1527                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1528                            "membership for mlme events: %d (%s)",
1529                            ret, strerror(-ret));
1530                 goto err;
1531         }
1532
1533         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1534         if (ret >= 0)
1535                 ret = nl_socket_add_membership(global->nl_event, ret);
1536         if (ret < 0) {
1537                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1538                            "membership for regulatory events: %d (%s)",
1539                            ret, strerror(-ret));
1540                 /* Continue without regulatory events */
1541         }
1542
1543         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1544         if (ret >= 0)
1545                 ret = nl_socket_add_membership(global->nl_event, ret);
1546         if (ret < 0) {
1547                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1548                            "membership for vendor events: %d (%s)",
1549                            ret, strerror(-ret));
1550                 /* Continue without vendor events */
1551         }
1552
1553         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1554                   no_seq_check, NULL);
1555         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1556                   process_global_event, global);
1557
1558         nl80211_register_eloop_read(&global->nl_event,
1559                                     wpa_driver_nl80211_event_receive,
1560                                     global->nl_cb);
1561
1562         return 0;
1563
1564 err:
1565         nl_destroy_handles(&global->nl_event);
1566         nl_destroy_handles(&global->nl);
1567         nl_cb_put(global->nl_cb);
1568         global->nl_cb = NULL;
1569         return -1;
1570 }
1571
1572
1573 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1574 {
1575         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1576         if (!drv->nl_cb) {
1577                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
1578                 return -1;
1579         }
1580
1581         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1582                   no_seq_check, NULL);
1583         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1584                   process_drv_event, drv);
1585
1586         return 0;
1587 }
1588
1589
1590 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1591 {
1592         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1593         /*
1594          * This may be for any interface; use ifdown event to disable
1595          * interface.
1596          */
1597 }
1598
1599
1600 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1601 {
1602         struct wpa_driver_nl80211_data *drv = ctx;
1603         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1604         if (i802_set_iface_flags(drv->first_bss, 1)) {
1605                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1606                            "after rfkill unblock");
1607                 return;
1608         }
1609         /* rtnetlink ifup handler will report interface as enabled */
1610 }
1611
1612
1613 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1614                                                       void *eloop_ctx,
1615                                                       void *handle)
1616 {
1617         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1618         u8 data[2048];
1619         struct msghdr msg;
1620         struct iovec entry;
1621         u8 control[512];
1622         struct cmsghdr *cmsg;
1623         int res, found_ee = 0, found_wifi = 0, acked = 0;
1624         union wpa_event_data event;
1625
1626         memset(&msg, 0, sizeof(msg));
1627         msg.msg_iov = &entry;
1628         msg.msg_iovlen = 1;
1629         entry.iov_base = data;
1630         entry.iov_len = sizeof(data);
1631         msg.msg_control = &control;
1632         msg.msg_controllen = sizeof(control);
1633
1634         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1635         /* if error or not fitting 802.3 header, return */
1636         if (res < 14)
1637                 return;
1638
1639         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1640         {
1641                 if (cmsg->cmsg_level == SOL_SOCKET &&
1642                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1643                         int *ack;
1644
1645                         found_wifi = 1;
1646                         ack = (void *)CMSG_DATA(cmsg);
1647                         acked = *ack;
1648                 }
1649
1650                 if (cmsg->cmsg_level == SOL_PACKET &&
1651                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1652                         struct sock_extended_err *err =
1653                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1654
1655                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1656                                 found_ee = 1;
1657                 }
1658         }
1659
1660         if (!found_ee || !found_wifi)
1661                 return;
1662
1663         memset(&event, 0, sizeof(event));
1664         event.eapol_tx_status.dst = data;
1665         event.eapol_tx_status.data = data + 14;
1666         event.eapol_tx_status.data_len = res - 14;
1667         event.eapol_tx_status.ack = acked;
1668         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1669 }
1670
1671
1672 static int nl80211_init_bss(struct i802_bss *bss)
1673 {
1674         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1675         if (!bss->nl_cb)
1676                 return -1;
1677
1678         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1679                   no_seq_check, NULL);
1680         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1681                   process_bss_event, bss);
1682
1683         return 0;
1684 }
1685
1686
1687 static void nl80211_destroy_bss(struct i802_bss *bss)
1688 {
1689         nl_cb_put(bss->nl_cb);
1690         bss->nl_cb = NULL;
1691 }
1692
1693
1694 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1695                                           void *global_priv, int hostapd,
1696                                           const u8 *set_addr,
1697                                           const char *driver_params)
1698 {
1699         struct wpa_driver_nl80211_data *drv;
1700         struct rfkill_config *rcfg;
1701         struct i802_bss *bss;
1702
1703         if (global_priv == NULL)
1704                 return NULL;
1705         drv = os_zalloc(sizeof(*drv));
1706         if (drv == NULL)
1707                 return NULL;
1708         drv->global = global_priv;
1709         drv->ctx = ctx;
1710         drv->hostapd = !!hostapd;
1711         drv->eapol_sock = -1;
1712         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1713         drv->if_indices = drv->default_if_indices;
1714
1715         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1716         if (!drv->first_bss) {
1717                 os_free(drv);
1718                 return NULL;
1719         }
1720         bss = drv->first_bss;
1721         bss->drv = drv;
1722         bss->ctx = ctx;
1723
1724         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1725         drv->monitor_ifidx = -1;
1726         drv->monitor_sock = -1;
1727         drv->eapol_tx_sock = -1;
1728         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1729
1730         if (wpa_driver_nl80211_init_nl(drv)) {
1731                 os_free(drv);
1732                 return NULL;
1733         }
1734
1735         if (nl80211_init_bss(bss))
1736                 goto failed;
1737
1738         rcfg = os_zalloc(sizeof(*rcfg));
1739         if (rcfg == NULL)
1740                 goto failed;
1741         rcfg->ctx = drv;
1742         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1743         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1744         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1745         drv->rfkill = rfkill_init(rcfg);
1746         if (drv->rfkill == NULL) {
1747                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1748                 os_free(rcfg);
1749         }
1750
1751         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1752                 drv->start_iface_up = 1;
1753
1754         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1755                 goto failed;
1756
1757         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1758         if (drv->eapol_tx_sock < 0)
1759                 goto failed;
1760
1761         if (drv->data_tx_status) {
1762                 int enabled = 1;
1763
1764                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1765                                &enabled, sizeof(enabled)) < 0) {
1766                         wpa_printf(MSG_DEBUG,
1767                                 "nl80211: wifi status sockopt failed\n");
1768                         drv->data_tx_status = 0;
1769                         if (!drv->use_monitor)
1770                                 drv->capa.flags &=
1771                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1772                 } else {
1773                         eloop_register_read_sock(drv->eapol_tx_sock,
1774                                 wpa_driver_nl80211_handle_eapol_tx_status,
1775                                 drv, NULL);
1776                 }
1777         }
1778
1779         if (drv->global) {
1780                 dl_list_add(&drv->global->interfaces, &drv->list);
1781                 drv->in_interface_list = 1;
1782         }
1783
1784         return bss;
1785
1786 failed:
1787         wpa_driver_nl80211_deinit(bss);
1788         return NULL;
1789 }
1790
1791
1792 /**
1793  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1794  * @ctx: context to be used when calling wpa_supplicant functions,
1795  * e.g., wpa_supplicant_event()
1796  * @ifname: interface name, e.g., wlan0
1797  * @global_priv: private driver global data from global_init()
1798  * Returns: Pointer to private data, %NULL on failure
1799  */
1800 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1801                                       void *global_priv)
1802 {
1803         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1804                                            NULL);
1805 }
1806
1807
1808 static int nl80211_register_frame(struct i802_bss *bss,
1809                                   struct nl_handle *nl_handle,
1810                                   u16 type, const u8 *match, size_t match_len)
1811 {
1812         struct wpa_driver_nl80211_data *drv = bss->drv;
1813         struct nl_msg *msg;
1814         int ret;
1815         char buf[30];
1816
1817         msg = nlmsg_alloc();
1818         if (!msg)
1819                 return -1;
1820
1821         buf[0] = '\0';
1822         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1823         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1824                    type, fc2str(type), nl_handle, buf);
1825
1826         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION) ||
1827             nl80211_set_iface_id(msg, bss) < 0 ||
1828             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1829             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1830                 nlmsg_free(msg);
1831                 return -1;
1832         }
1833
1834         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1835         if (ret) {
1836                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1837                            "failed (type=%u): ret=%d (%s)",
1838                            type, ret, strerror(-ret));
1839                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1840                             match, match_len);
1841         }
1842         return ret;
1843 }
1844
1845
1846 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1847 {
1848         struct wpa_driver_nl80211_data *drv = bss->drv;
1849
1850         if (bss->nl_mgmt) {
1851                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1852                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1853                 return -1;
1854         }
1855
1856         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
1857         if (bss->nl_mgmt == NULL)
1858                 return -1;
1859
1860         return 0;
1861 }
1862
1863
1864 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1865 {
1866         nl80211_register_eloop_read(&bss->nl_mgmt,
1867                                     wpa_driver_nl80211_event_receive,
1868                                     bss->nl_cb);
1869 }
1870
1871
1872 static int nl80211_register_action_frame(struct i802_bss *bss,
1873                                          const u8 *match, size_t match_len)
1874 {
1875         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1876         return nl80211_register_frame(bss, bss->nl_mgmt,
1877                                       type, match, match_len);
1878 }
1879
1880
1881 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1882 {
1883         struct wpa_driver_nl80211_data *drv = bss->drv;
1884         int ret = 0;
1885
1886         if (nl80211_alloc_mgmt_handle(bss))
1887                 return -1;
1888         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1889                    "handle %p", bss->nl_mgmt);
1890
1891         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1892                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1893
1894                 /* register for any AUTH message */
1895                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1896         }
1897
1898 #ifdef CONFIG_INTERWORKING
1899         /* QoS Map Configure */
1900         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1901                 ret = -1;
1902 #endif /* CONFIG_INTERWORKING */
1903 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1904         /* GAS Initial Request */
1905         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1906                 ret = -1;
1907         /* GAS Initial Response */
1908         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1909                 ret = -1;
1910         /* GAS Comeback Request */
1911         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1912                 ret = -1;
1913         /* GAS Comeback Response */
1914         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1915                 ret = -1;
1916         /* Protected GAS Initial Request */
1917         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1918                 ret = -1;
1919         /* Protected GAS Initial Response */
1920         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1921                 ret = -1;
1922         /* Protected GAS Comeback Request */
1923         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1924                 ret = -1;
1925         /* Protected GAS Comeback Response */
1926         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1927                 ret = -1;
1928 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1929 #ifdef CONFIG_P2P
1930         /* P2P Public Action */
1931         if (nl80211_register_action_frame(bss,
1932                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1933                                           6) < 0)
1934                 ret = -1;
1935         /* P2P Action */
1936         if (nl80211_register_action_frame(bss,
1937                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1938                                           5) < 0)
1939                 ret = -1;
1940 #endif /* CONFIG_P2P */
1941 #ifdef CONFIG_IEEE80211W
1942         /* SA Query Response */
1943         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1944                 ret = -1;
1945 #endif /* CONFIG_IEEE80211W */
1946 #ifdef CONFIG_TDLS
1947         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1948                 /* TDLS Discovery Response */
1949                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1950                     0)
1951                         ret = -1;
1952         }
1953 #endif /* CONFIG_TDLS */
1954
1955         /* FT Action frames */
1956         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1957                 ret = -1;
1958         else
1959                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1960                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1961
1962         /* WNM - BSS Transition Management Request */
1963         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1964                 ret = -1;
1965         /* WNM-Sleep Mode Response */
1966         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1967                 ret = -1;
1968
1969 #ifdef CONFIG_HS20
1970         /* WNM-Notification */
1971         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1972                 ret = -1;
1973 #endif /* CONFIG_HS20 */
1974
1975         /* WMM-AC ADDTS Response */
1976         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1977                 return -1;
1978
1979         /* WMM-AC DELTS */
1980         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1981                 return -1;
1982
1983         /* Radio Measurement - Neighbor Report Response */
1984         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1985                 ret = -1;
1986
1987         /* Radio Measurement - Link Measurement Request */
1988         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1989             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1990                 ret = -1;
1991
1992         nl80211_mgmt_handle_register_eloop(bss);
1993
1994         return ret;
1995 }
1996
1997
1998 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1999 {
2000         int ret = 0;
2001
2002         if (nl80211_alloc_mgmt_handle(bss))
2003                 return -1;
2004
2005         wpa_printf(MSG_DEBUG,
2006                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
2007                    bss->nl_mgmt);
2008
2009         /* Auth frames for mesh SAE */
2010         if (nl80211_register_frame(bss, bss->nl_mgmt,
2011                                    (WLAN_FC_TYPE_MGMT << 2) |
2012                                    (WLAN_FC_STYPE_AUTH << 4),
2013                                    NULL, 0) < 0)
2014                 ret = -1;
2015
2016         /* Mesh peering open */
2017         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
2018                 ret = -1;
2019         /* Mesh peering confirm */
2020         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
2021                 ret = -1;
2022         /* Mesh peering close */
2023         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
2024                 ret = -1;
2025
2026         nl80211_mgmt_handle_register_eloop(bss);
2027
2028         return ret;
2029 }
2030
2031
2032 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2033 {
2034         struct wpa_driver_nl80211_data *drv = bss->drv;
2035         struct nl_msg *msg;
2036         int ret;
2037
2038         msg = nlmsg_alloc();
2039         if (!msg)
2040                 return -1;
2041
2042         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME) ||
2043             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex)) {
2044                 nlmsg_free(msg);
2045                 return -1;
2046         }
2047
2048         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
2049         if (ret) {
2050                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2051                            "failed: ret=%d (%s)",
2052                            ret, strerror(-ret));
2053         }
2054         return ret;
2055 }
2056
2057
2058 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2059 {
2060         static const int stypes[] = {
2061                 WLAN_FC_STYPE_AUTH,
2062                 WLAN_FC_STYPE_ASSOC_REQ,
2063                 WLAN_FC_STYPE_REASSOC_REQ,
2064                 WLAN_FC_STYPE_DISASSOC,
2065                 WLAN_FC_STYPE_DEAUTH,
2066                 WLAN_FC_STYPE_ACTION,
2067                 WLAN_FC_STYPE_PROBE_REQ,
2068 /* Beacon doesn't work as mac80211 doesn't currently allow
2069  * it, but it wouldn't really be the right thing anyway as
2070  * it isn't per interface ... maybe just dump the scan
2071  * results periodically for OLBC?
2072  */
2073                 /* WLAN_FC_STYPE_BEACON, */
2074         };
2075         unsigned int i;
2076
2077         if (nl80211_alloc_mgmt_handle(bss))
2078                 return -1;
2079         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2080                    "handle %p", bss->nl_mgmt);
2081
2082         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2083                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2084                                            (WLAN_FC_TYPE_MGMT << 2) |
2085                                            (stypes[i] << 4),
2086                                            NULL, 0) < 0) {
2087                         goto out_err;
2088                 }
2089         }
2090
2091         if (nl80211_register_spurious_class3(bss))
2092                 goto out_err;
2093
2094         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2095                 goto out_err;
2096
2097         nl80211_mgmt_handle_register_eloop(bss);
2098         return 0;
2099
2100 out_err:
2101         nl_destroy_handles(&bss->nl_mgmt);
2102         return -1;
2103 }
2104
2105
2106 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2107 {
2108         if (nl80211_alloc_mgmt_handle(bss))
2109                 return -1;
2110         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2111                    "handle %p (device SME)", bss->nl_mgmt);
2112
2113         if (nl80211_register_frame(bss, bss->nl_mgmt,
2114                                    (WLAN_FC_TYPE_MGMT << 2) |
2115                                    (WLAN_FC_STYPE_ACTION << 4),
2116                                    NULL, 0) < 0)
2117                 goto out_err;
2118
2119         nl80211_mgmt_handle_register_eloop(bss);
2120         return 0;
2121
2122 out_err:
2123         nl_destroy_handles(&bss->nl_mgmt);
2124         return -1;
2125 }
2126
2127
2128 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2129 {
2130         if (bss->nl_mgmt == NULL)
2131                 return;
2132         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2133                    "(%s)", bss->nl_mgmt, reason);
2134         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2135
2136         nl80211_put_wiphy_data_ap(bss);
2137 }
2138
2139
2140 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2141 {
2142         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2143 }
2144
2145
2146 static void nl80211_del_p2pdev(struct i802_bss *bss)
2147 {
2148         struct wpa_driver_nl80211_data *drv = bss->drv;
2149         struct nl_msg *msg;
2150         int ret;
2151
2152         msg = nlmsg_alloc();
2153         if (!msg)
2154                 return;
2155
2156         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE) ||
2157             nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id)) {
2158                 nlmsg_free(msg);
2159                 return;
2160         }
2161
2162         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2163
2164         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2165                    bss->ifname, (long long unsigned int) bss->wdev_id,
2166                    strerror(-ret));
2167 }
2168
2169
2170 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2171 {
2172         struct wpa_driver_nl80211_data *drv = bss->drv;
2173         struct nl_msg *msg;
2174         int ret;
2175
2176         msg = nlmsg_alloc();
2177         if (!msg)
2178                 return -1;
2179
2180         if (!nl80211_cmd(drv, msg, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2181                          NL80211_CMD_STOP_P2P_DEVICE) ||
2182             nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id)) {
2183                 nlmsg_free(msg);
2184                 return -1;
2185         }
2186
2187         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2188
2189         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2190                    start ? "Start" : "Stop",
2191                    bss->ifname, (long long unsigned int) bss->wdev_id,
2192                    strerror(-ret));
2193         return ret;
2194 }
2195
2196
2197 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2198 {
2199         enum nl80211_iftype nlmode;
2200
2201         nlmode = nl80211_get_ifmode(bss);
2202         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2203                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2204                                              bss->ifname, up);
2205         }
2206
2207         /* P2P Device has start/stop which is equivalent */
2208         return nl80211_set_p2pdev(bss, up);
2209 }
2210
2211
2212 static int
2213 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2214                                    const u8 *set_addr, int first,
2215                                    const char *driver_params)
2216 {
2217         struct i802_bss *bss = drv->first_bss;
2218         int send_rfkill_event = 0;
2219         enum nl80211_iftype nlmode;
2220
2221         drv->ifindex = if_nametoindex(bss->ifname);
2222         bss->ifindex = drv->ifindex;
2223         bss->wdev_id = drv->global->if_add_wdevid;
2224         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2225
2226         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2227         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2228         drv->global->if_add_wdevid_set = 0;
2229
2230         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2231                 bss->static_ap = 1;
2232
2233         if (wpa_driver_nl80211_capa(drv))
2234                 return -1;
2235
2236         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2237                 return -1;
2238
2239         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2240                    bss->ifname, drv->phyname);
2241
2242         if (set_addr &&
2243             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2244              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2245                                 set_addr)))
2246                 return -1;
2247
2248         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2249                 drv->start_mode_ap = 1;
2250
2251         if (drv->hostapd || bss->static_ap)
2252                 nlmode = NL80211_IFTYPE_AP;
2253         else if (bss->if_dynamic)
2254                 nlmode = nl80211_get_ifmode(bss);
2255         else
2256                 nlmode = NL80211_IFTYPE_STATION;
2257
2258         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2259                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2260                 return -1;
2261         }
2262
2263         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2264                 nl80211_get_macaddr(bss);
2265
2266         if (!rfkill_is_blocked(drv->rfkill)) {
2267                 int ret = i802_set_iface_flags(bss, 1);
2268                 if (ret) {
2269                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2270                                    "interface '%s' UP", bss->ifname);
2271                         return ret;
2272                 }
2273                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2274                         return ret;
2275         } else {
2276                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2277                            "interface '%s' due to rfkill", bss->ifname);
2278                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2279                         return 0;
2280                 drv->if_disabled = 1;
2281                 send_rfkill_event = 1;
2282         }
2283
2284         if (!drv->hostapd)
2285                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2286                                        1, IF_OPER_DORMANT);
2287
2288         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2289                                bss->addr))
2290                 return -1;
2291         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2292
2293         if (send_rfkill_event) {
2294                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2295                                        drv, drv->ctx);
2296         }
2297
2298         return 0;
2299 }
2300
2301
2302 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2303 {
2304         struct nl_msg *msg;
2305
2306         msg = nlmsg_alloc();
2307         if (!msg)
2308                 return -ENOMEM;
2309
2310         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2311                    drv->ifindex);
2312         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON) ||
2313             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex)) {
2314                 nlmsg_free(msg);
2315                 return -ENOBUFS;
2316         }
2317
2318         return send_and_recv_msgs(drv, msg, NULL, NULL);
2319 }
2320
2321
2322 /**
2323  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2324  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2325  *
2326  * Shut down driver interface and processing of driver events. Free
2327  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2328  */
2329 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2330 {
2331         struct wpa_driver_nl80211_data *drv = bss->drv;
2332
2333         bss->in_deinit = 1;
2334         if (drv->data_tx_status)
2335                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2336         if (drv->eapol_tx_sock >= 0)
2337                 close(drv->eapol_tx_sock);
2338
2339         if (bss->nl_preq)
2340                 wpa_driver_nl80211_probe_req_report(bss, 0);
2341         if (bss->added_if_into_bridge) {
2342                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2343                                     bss->ifname) < 0)
2344                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2345                                    "interface %s from bridge %s: %s",
2346                                    bss->ifname, bss->brname, strerror(errno));
2347                 if (drv->rtnl_sk)
2348                         nl80211_handle_destroy(drv->rtnl_sk);
2349         }
2350         if (bss->added_bridge) {
2351                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2352                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2353                                    "bridge %s: %s",
2354                                    bss->brname, strerror(errno));
2355         }
2356
2357         nl80211_remove_monitor_interface(drv);
2358
2359         if (is_ap_interface(drv->nlmode))
2360                 wpa_driver_nl80211_del_beacon(drv);
2361
2362         if (drv->eapol_sock >= 0) {
2363                 eloop_unregister_read_sock(drv->eapol_sock);
2364                 close(drv->eapol_sock);
2365         }
2366
2367         if (drv->if_indices != drv->default_if_indices)
2368                 os_free(drv->if_indices);
2369
2370         if (drv->disabled_11b_rates)
2371                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2372
2373         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2374                                IF_OPER_UP);
2375         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2376         rfkill_deinit(drv->rfkill);
2377
2378         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2379
2380         if (!drv->start_iface_up)
2381                 (void) i802_set_iface_flags(bss, 0);
2382
2383         if (drv->addr_changed) {
2384                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2385                                           0) < 0) {
2386                         wpa_printf(MSG_DEBUG,
2387                                    "nl80211: Could not set interface down to restore permanent MAC address");
2388                 }
2389                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2390                                        drv->perm_addr) < 0) {
2391                         wpa_printf(MSG_DEBUG,
2392                                    "nl80211: Could not restore permanent MAC address");
2393                 }
2394         }
2395
2396         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2397                 if (!drv->hostapd || !drv->start_mode_ap)
2398                         wpa_driver_nl80211_set_mode(bss,
2399                                                     NL80211_IFTYPE_STATION);
2400                 nl80211_mgmt_unsubscribe(bss, "deinit");
2401         } else {
2402                 nl80211_mgmt_unsubscribe(bss, "deinit");
2403                 nl80211_del_p2pdev(bss);
2404         }
2405         nl_cb_put(drv->nl_cb);
2406
2407         nl80211_destroy_bss(drv->first_bss);
2408
2409         os_free(drv->filter_ssids);
2410
2411         os_free(drv->auth_ie);
2412
2413         if (drv->in_interface_list)
2414                 dl_list_del(&drv->list);
2415
2416         os_free(drv->extended_capa);
2417         os_free(drv->extended_capa_mask);
2418         os_free(drv->first_bss);
2419         os_free(drv);
2420 }
2421
2422
2423 /**
2424  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2425  * @eloop_ctx: Driver private data
2426  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2427  *
2428  * This function can be used as registered timeout when starting a scan to
2429  * generate a scan completed event if the driver does not report this.
2430  */
2431 void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2432 {
2433         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2434         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2435                 wpa_driver_nl80211_set_mode(drv->first_bss,
2436                                             drv->ap_scan_as_station);
2437                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2438         }
2439         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2440         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2441 }
2442
2443
2444 static struct nl_msg *
2445 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
2446                     struct wpa_driver_scan_params *params, u64 *wdev_id)
2447 {
2448         struct nl_msg *msg;
2449         size_t i;
2450         u32 scan_flags = 0;
2451         int res;
2452
2453         msg = nlmsg_alloc();
2454         if (!msg)
2455                 return NULL;
2456
2457         nl80211_cmd(drv, msg, 0, cmd);
2458
2459         if (!wdev_id)
2460                 res = nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2461         else
2462                 res = nla_put_u64(msg, NL80211_ATTR_WDEV, *wdev_id);
2463         if (res < 0)
2464                 goto fail;
2465
2466         if (params->num_ssids) {
2467                 struct nlattr *ssids;
2468
2469                 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
2470                 if (ssids == NULL)
2471                         goto fail;
2472                 for (i = 0; i < params->num_ssids; i++) {
2473                         wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2474                                           params->ssids[i].ssid,
2475                                           params->ssids[i].ssid_len);
2476                         if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
2477                                     params->ssids[i].ssid))
2478                                 goto fail;
2479                 }
2480                 nla_nest_end(msg, ssids);
2481         }
2482
2483         if (params->extra_ies) {
2484                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2485                             params->extra_ies, params->extra_ies_len);
2486                 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
2487                             params->extra_ies))
2488                         goto fail;
2489         }
2490
2491         if (params->freqs) {
2492                 struct nlattr *freqs;
2493                 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
2494                 if (freqs == NULL)
2495                         goto fail;
2496                 for (i = 0; params->freqs[i]; i++) {
2497                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2498                                    "MHz", params->freqs[i]);
2499                         if (nla_put_u32(msg, i + 1, params->freqs[i]))
2500                                 goto fail;
2501                 }
2502                 nla_nest_end(msg, freqs);
2503         }
2504
2505         os_free(drv->filter_ssids);
2506         drv->filter_ssids = params->filter_ssids;
2507         params->filter_ssids = NULL;
2508         drv->num_filter_ssids = params->num_filter_ssids;
2509
2510         if (params->only_new_results) {
2511                 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH");
2512                 scan_flags |= NL80211_SCAN_FLAG_FLUSH;
2513         }
2514
2515         if (params->low_priority && drv->have_low_prio_scan) {
2516                 wpa_printf(MSG_DEBUG,
2517                            "nl80211: Add NL80211_SCAN_FLAG_LOW_PRIORITY");
2518                 scan_flags |= NL80211_SCAN_FLAG_LOW_PRIORITY;
2519         }
2520
2521         if (scan_flags &&
2522             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags))
2523                 goto fail;
2524
2525         return msg;
2526
2527 fail:
2528         nlmsg_free(msg);
2529         return NULL;
2530 }
2531
2532
2533 /**
2534  * wpa_driver_nl80211_scan - Request the driver to initiate scan
2535  * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
2536  * @params: Scan parameters
2537  * Returns: 0 on success, -1 on failure
2538  */
2539 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
2540                                    struct wpa_driver_scan_params *params)
2541 {
2542         struct wpa_driver_nl80211_data *drv = bss->drv;
2543         int ret = -1, timeout;
2544         struct nl_msg *msg = NULL;
2545
2546         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
2547         drv->scan_for_auth = 0;
2548
2549         msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
2550                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2551         if (!msg)
2552                 return -1;
2553
2554         if (params->p2p_probe) {
2555                 struct nlattr *rates;
2556
2557                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
2558
2559                 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
2560                 if (rates == NULL)
2561                         goto fail;
2562
2563                 /*
2564                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2565                  * by masking out everything else apart from the OFDM rates 6,
2566                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2567                  * rates are left enabled.
2568                  */
2569                 if (nla_put(msg, NL80211_BAND_2GHZ, 8,
2570                             "\x0c\x12\x18\x24\x30\x48\x60\x6c"))
2571                         goto fail;
2572                 nla_nest_end(msg, rates);
2573
2574                 if (nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE))
2575                         goto fail;
2576         }
2577
2578         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2579         msg = NULL;
2580         if (ret) {
2581                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2582                            "(%s)", ret, strerror(-ret));
2583                 if (drv->hostapd && is_ap_interface(drv->nlmode)) {
2584                         enum nl80211_iftype old_mode = drv->nlmode;
2585
2586                         /*
2587                          * mac80211 does not allow scan requests in AP mode, so
2588                          * try to do this in station mode.
2589                          */
2590                         if (wpa_driver_nl80211_set_mode(
2591                                     bss, NL80211_IFTYPE_STATION))
2592                                 goto fail;
2593
2594                         if (wpa_driver_nl80211_scan(bss, params)) {
2595                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2596                                 goto fail;
2597                         }
2598
2599                         /* Restore AP mode when processing scan results */
2600                         drv->ap_scan_as_station = old_mode;
2601                         ret = 0;
2602                 } else
2603                         goto fail;
2604         }
2605
2606         drv->scan_state = SCAN_REQUESTED;
2607         /* Not all drivers generate "scan completed" wireless event, so try to
2608          * read results after a timeout. */
2609         timeout = 10;
2610         if (drv->scan_complete_events) {
2611                 /*
2612                  * The driver seems to deliver events to notify when scan is
2613                  * complete, so use longer timeout to avoid race conditions
2614                  * with scanning and following association request.
2615                  */
2616                 timeout = 30;
2617         }
2618         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2619                    "seconds", ret, timeout);
2620         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2621         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2622                                drv, drv->ctx);
2623
2624 fail:
2625         nlmsg_free(msg);
2626         return ret;
2627 }
2628
2629
2630 /**
2631  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2632  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2633  * @params: Scan parameters
2634  * @interval: Interval between scan cycles in milliseconds
2635  * Returns: 0 on success, -1 on failure or if not supported
2636  */
2637 static int wpa_driver_nl80211_sched_scan(void *priv,
2638                                          struct wpa_driver_scan_params *params,
2639                                          u32 interval)
2640 {
2641         struct i802_bss *bss = priv;
2642         struct wpa_driver_nl80211_data *drv = bss->drv;
2643         int ret = -1;
2644         struct nl_msg *msg;
2645         size_t i;
2646
2647         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
2648
2649 #ifdef ANDROID
2650         if (!drv->capa.sched_scan_supported)
2651                 return android_pno_start(bss, params);
2652 #endif /* ANDROID */
2653
2654         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
2655                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2656         if (!msg ||
2657             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval))
2658                 goto fail;
2659
2660         if ((drv->num_filter_ssids &&
2661             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
2662             params->filter_rssi) {
2663                 struct nlattr *match_sets;
2664                 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
2665                 if (match_sets == NULL)
2666                         goto fail;
2667
2668                 for (i = 0; i < drv->num_filter_ssids; i++) {
2669                         struct nlattr *match_set_ssid;
2670                         wpa_hexdump_ascii(MSG_MSGDUMP,
2671                                           "nl80211: Sched scan filter SSID",
2672                                           drv->filter_ssids[i].ssid,
2673                                           drv->filter_ssids[i].ssid_len);
2674
2675                         match_set_ssid = nla_nest_start(msg, i + 1);
2676                         if (match_set_ssid == NULL ||
2677                             nla_put(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2678                                     drv->filter_ssids[i].ssid_len,
2679                                     drv->filter_ssids[i].ssid) ||
2680                             (params->filter_rssi &&
2681                              nla_put_u32(msg,
2682                                          NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2683                                          params->filter_rssi)))
2684                                 goto fail;
2685
2686                         nla_nest_end(msg, match_set_ssid);
2687                 }
2688
2689                 /*
2690                  * Due to backward compatibility code, newer kernels treat this
2691                  * matchset (with only an RSSI filter) as the default for all
2692                  * other matchsets, unless it's the only one, in which case the
2693                  * matchset will actually allow all SSIDs above the RSSI.
2694                  */
2695                 if (params->filter_rssi) {
2696                         struct nlattr *match_set_rssi;
2697                         match_set_rssi = nla_nest_start(msg, 0);
2698                         if (match_set_rssi == NULL ||
2699                             nla_put_u32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2700                                         params->filter_rssi))
2701                                 goto fail;
2702                         wpa_printf(MSG_MSGDUMP,
2703                                    "nl80211: Sched scan RSSI filter %d dBm",
2704                                    params->filter_rssi);
2705                         nla_nest_end(msg, match_set_rssi);
2706                 }
2707
2708                 nla_nest_end(msg, match_sets);
2709         }
2710
2711         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2712
2713         /* TODO: if we get an error here, we should fall back to normal scan */
2714
2715         msg = NULL;
2716         if (ret) {
2717                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2718                            "ret=%d (%s)", ret, strerror(-ret));
2719                 goto fail;
2720         }
2721
2722         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2723                    "scan interval %d msec", ret, interval);
2724
2725 fail:
2726         nlmsg_free(msg);
2727         return ret;
2728 }
2729
2730
2731 /**
2732  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2733  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2734  * Returns: 0 on success, -1 on failure or if not supported
2735  */
2736 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2737 {
2738         struct i802_bss *bss = priv;
2739         struct wpa_driver_nl80211_data *drv = bss->drv;
2740         int ret = 0;
2741         struct nl_msg *msg;
2742
2743 #ifdef ANDROID
2744         if (!drv->capa.sched_scan_supported)
2745                 return android_pno_stop(bss);
2746 #endif /* ANDROID */
2747
2748         msg = nlmsg_alloc();
2749         if (!msg)
2750                 return -1;
2751
2752         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN) ||
2753             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex)) {
2754                 nlmsg_free(msg);
2755                 return 0;
2756         }
2757
2758         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2759         if (ret) {
2760                 wpa_printf(MSG_DEBUG,
2761                            "nl80211: Sched scan stop failed: ret=%d (%s)",
2762                            ret, strerror(-ret));
2763         } else {
2764                 wpa_printf(MSG_DEBUG,
2765                            "nl80211: Sched scan stop sent");
2766         }
2767
2768         return ret;
2769 }
2770
2771
2772 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2773 {
2774         const u8 *end, *pos;
2775
2776         if (ies == NULL)
2777                 return NULL;
2778
2779         pos = ies;
2780         end = ies + ies_len;
2781
2782         while (pos + 1 < end) {
2783                 if (pos + 2 + pos[1] > end)
2784                         break;
2785                 if (pos[0] == ie)
2786                         return pos;
2787                 pos += 2 + pos[1];
2788         }
2789
2790         return NULL;
2791 }
2792
2793
2794 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2795                                  const u8 *ie, size_t ie_len)
2796 {
2797         const u8 *ssid;
2798         size_t i;
2799
2800         if (drv->filter_ssids == NULL)
2801                 return 0;
2802
2803         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2804         if (ssid == NULL)
2805                 return 1;
2806
2807         for (i = 0; i < drv->num_filter_ssids; i++) {
2808                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2809                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2810                     0)
2811                         return 0;
2812         }
2813
2814         return 1;
2815 }
2816
2817
2818 static int bss_info_handler(struct nl_msg *msg, void *arg)
2819 {
2820         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2821         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2822         struct nlattr *bss[NL80211_BSS_MAX + 1];
2823         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2824                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2825                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2826                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2827                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2828                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2829                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2830                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2831                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2832                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2833                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2834                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2835         };
2836         struct nl80211_bss_info_arg *_arg = arg;
2837         struct wpa_scan_results *res = _arg->res;
2838         struct wpa_scan_res **tmp;
2839         struct wpa_scan_res *r;
2840         const u8 *ie, *beacon_ie;
2841         size_t ie_len, beacon_ie_len;
2842         u8 *pos;
2843         size_t i;
2844
2845         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2846                   genlmsg_attrlen(gnlh, 0), NULL);
2847         if (!tb[NL80211_ATTR_BSS])
2848                 return NL_SKIP;
2849         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2850                              bss_policy))
2851                 return NL_SKIP;
2852         if (bss[NL80211_BSS_STATUS]) {
2853                 enum nl80211_bss_status status;
2854                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2855                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2856                     bss[NL80211_BSS_FREQUENCY]) {
2857                         _arg->assoc_freq =
2858                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2859                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2860                                    _arg->assoc_freq);
2861                 }
2862                 if (status == NL80211_BSS_STATUS_IBSS_JOINED &&
2863                     bss[NL80211_BSS_FREQUENCY]) {
2864                         _arg->ibss_freq =
2865                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2866                         wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz",
2867                                    _arg->ibss_freq);
2868                 }
2869                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2870                     bss[NL80211_BSS_BSSID]) {
2871                         os_memcpy(_arg->assoc_bssid,
2872                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2873                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2874                                    MACSTR, MAC2STR(_arg->assoc_bssid));
2875                 }
2876         }
2877         if (!res)
2878                 return NL_SKIP;
2879         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2880                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2881                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2882         } else {
2883                 ie = NULL;
2884                 ie_len = 0;
2885         }
2886         if (bss[NL80211_BSS_BEACON_IES]) {
2887                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2888                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2889         } else {
2890                 beacon_ie = NULL;
2891                 beacon_ie_len = 0;
2892         }
2893
2894         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2895                                   ie ? ie_len : beacon_ie_len))
2896                 return NL_SKIP;
2897
2898         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2899         if (r == NULL)
2900                 return NL_SKIP;
2901         if (bss[NL80211_BSS_BSSID])
2902                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2903                           ETH_ALEN);
2904         if (bss[NL80211_BSS_FREQUENCY])
2905                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2906         if (bss[NL80211_BSS_BEACON_INTERVAL])
2907                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2908         if (bss[NL80211_BSS_CAPABILITY])
2909                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2910         r->flags |= WPA_SCAN_NOISE_INVALID;
2911         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2912                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2913                 r->level /= 100; /* mBm to dBm */
2914                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2915         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2916                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2917                 r->flags |= WPA_SCAN_QUAL_INVALID;
2918         } else
2919                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2920         if (bss[NL80211_BSS_TSF])
2921                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2922         if (bss[NL80211_BSS_SEEN_MS_AGO])
2923                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2924         r->ie_len = ie_len;
2925         pos = (u8 *) (r + 1);
2926         if (ie) {
2927                 os_memcpy(pos, ie, ie_len);
2928                 pos += ie_len;
2929         }
2930         r->beacon_ie_len = beacon_ie_len;
2931         if (beacon_ie)
2932                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2933
2934         if (bss[NL80211_BSS_STATUS]) {
2935                 enum nl80211_bss_status status;
2936                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2937                 switch (status) {
2938                 case NL80211_BSS_STATUS_AUTHENTICATED:
2939                         r->flags |= WPA_SCAN_AUTHENTICATED;
2940                         break;
2941                 case NL80211_BSS_STATUS_ASSOCIATED:
2942                         r->flags |= WPA_SCAN_ASSOCIATED;
2943                         break;
2944                 default:
2945                         break;
2946                 }
2947         }
2948
2949         /*
2950          * cfg80211 maintains separate BSS table entries for APs if the same
2951          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
2952          * not use frequency as a separate key in the BSS table, so filter out
2953          * duplicated entries. Prefer associated BSS entry in such a case in
2954          * order to get the correct frequency into the BSS table. Similarly,
2955          * prefer newer entries over older.
2956          */
2957         for (i = 0; i < res->num; i++) {
2958                 const u8 *s1, *s2;
2959                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
2960                         continue;
2961
2962                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
2963                                     res->res[i]->ie_len, WLAN_EID_SSID);
2964                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
2965                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
2966                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
2967                         continue;
2968
2969                 /* Same BSSID,SSID was already included in scan results */
2970                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
2971                            "for " MACSTR, MAC2STR(r->bssid));
2972
2973                 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
2974                      !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
2975                     r->age < res->res[i]->age) {
2976                         os_free(res->res[i]);
2977                         res->res[i] = r;
2978                 } else
2979                         os_free(r);
2980                 return NL_SKIP;
2981         }
2982
2983         tmp = os_realloc_array(res->res, res->num + 1,
2984                                sizeof(struct wpa_scan_res *));
2985         if (tmp == NULL) {
2986                 os_free(r);
2987                 return NL_SKIP;
2988         }
2989         tmp[res->num++] = r;
2990         res->res = tmp;
2991
2992         return NL_SKIP;
2993 }
2994
2995
2996 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2997                                  const u8 *addr)
2998 {
2999         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
3000                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
3001                            "mismatch (" MACSTR ")", MAC2STR(addr));
3002                 wpa_driver_nl80211_mlme(drv, addr,
3003                                         NL80211_CMD_DEAUTHENTICATE,
3004                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
3005         }
3006 }
3007
3008
3009 static void wpa_driver_nl80211_check_bss_status(
3010         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
3011 {
3012         size_t i;
3013
3014         for (i = 0; i < res->num; i++) {
3015                 struct wpa_scan_res *r = res->res[i];
3016                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
3017                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3018                                    "indicates BSS status with " MACSTR
3019                                    " as authenticated",
3020                                    MAC2STR(r->bssid));
3021                         if (is_sta_interface(drv->nlmode) &&
3022                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
3023                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
3024                             0) {
3025                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
3026                                            " in local state (auth=" MACSTR
3027                                            " assoc=" MACSTR ")",
3028                                            MAC2STR(drv->auth_bssid),
3029                                            MAC2STR(drv->bssid));
3030                                 clear_state_mismatch(drv, r->bssid);
3031                         }
3032                 }
3033
3034                 if (r->flags & WPA_SCAN_ASSOCIATED) {
3035                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3036                                    "indicate BSS status with " MACSTR
3037                                    " as associated",
3038                                    MAC2STR(r->bssid));
3039                         if (is_sta_interface(drv->nlmode) &&
3040                             !drv->associated) {
3041                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3042                                            "(not associated) does not match "
3043                                            "with BSS state");
3044                                 clear_state_mismatch(drv, r->bssid);
3045                         } else if (is_sta_interface(drv->nlmode) &&
3046                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3047                                    0) {
3048                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3049                                            "(associated with " MACSTR ") does "
3050                                            "not match with BSS state",
3051                                            MAC2STR(drv->bssid));
3052                                 clear_state_mismatch(drv, r->bssid);
3053                                 clear_state_mismatch(drv, drv->bssid);
3054                         }
3055                 }
3056         }
3057 }
3058
3059
3060 static struct wpa_scan_results *
3061 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3062 {
3063         struct nl_msg *msg;
3064         struct wpa_scan_results *res;
3065         int ret;
3066         struct nl80211_bss_info_arg arg;
3067
3068         res = os_zalloc(sizeof(*res));
3069         if (res == NULL)
3070                 return NULL;
3071         msg = nlmsg_alloc();
3072         if (!msg)
3073                 goto fail;
3074
3075         if (!nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN) ||
3076             nl80211_set_iface_id(msg, drv->first_bss) < 0)
3077                 goto fail;
3078
3079         arg.drv = drv;
3080         arg.res = res;
3081         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3082         msg = NULL;
3083         if (ret == 0) {
3084                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3085                            "BSSes)", (unsigned long) res->num);
3086                 nl80211_get_noise_for_scan_results(drv, res);
3087                 return res;
3088         }
3089         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3090                    "(%s)", ret, strerror(-ret));
3091 fail:
3092         nlmsg_free(msg);
3093         wpa_scan_results_free(res);
3094         return NULL;
3095 }
3096
3097
3098 /**
3099  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3100  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3101  * Returns: Scan results on success, -1 on failure
3102  */
3103 static struct wpa_scan_results *
3104 wpa_driver_nl80211_get_scan_results(void *priv)
3105 {
3106         struct i802_bss *bss = priv;
3107         struct wpa_driver_nl80211_data *drv = bss->drv;
3108         struct wpa_scan_results *res;
3109
3110         res = nl80211_get_scan_results(drv);
3111         if (res)
3112                 wpa_driver_nl80211_check_bss_status(drv, res);
3113         return res;
3114 }
3115
3116
3117 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3118 {
3119         struct wpa_scan_results *res;
3120         size_t i;
3121
3122         res = nl80211_get_scan_results(drv);
3123         if (res == NULL) {
3124                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3125                 return;
3126         }
3127
3128         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3129         for (i = 0; i < res->num; i++) {
3130                 struct wpa_scan_res *r = res->res[i];
3131                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3132                            (int) i, (int) res->num, MAC2STR(r->bssid),
3133                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3134                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3135         }
3136
3137         wpa_scan_results_free(res);
3138 }
3139
3140
3141 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
3142 {
3143         switch (alg) {
3144         case WPA_ALG_WEP:
3145                 if (key_len == 5)
3146                         return WLAN_CIPHER_SUITE_WEP40;
3147                 return WLAN_CIPHER_SUITE_WEP104;
3148         case WPA_ALG_TKIP:
3149                 return WLAN_CIPHER_SUITE_TKIP;
3150         case WPA_ALG_CCMP:
3151                 return WLAN_CIPHER_SUITE_CCMP;
3152         case WPA_ALG_GCMP:
3153                 return WLAN_CIPHER_SUITE_GCMP;
3154         case WPA_ALG_CCMP_256:
3155                 return WLAN_CIPHER_SUITE_CCMP_256;
3156         case WPA_ALG_GCMP_256:
3157                 return WLAN_CIPHER_SUITE_GCMP_256;
3158         case WPA_ALG_IGTK:
3159                 return WLAN_CIPHER_SUITE_AES_CMAC;
3160         case WPA_ALG_BIP_GMAC_128:
3161                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
3162         case WPA_ALG_BIP_GMAC_256:
3163                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
3164         case WPA_ALG_BIP_CMAC_256:
3165                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
3166         case WPA_ALG_SMS4:
3167                 return WLAN_CIPHER_SUITE_SMS4;
3168         case WPA_ALG_KRK:
3169                 return WLAN_CIPHER_SUITE_KRK;
3170         case WPA_ALG_NONE:
3171         case WPA_ALG_PMK:
3172                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
3173                            alg);
3174                 return 0;
3175         }
3176
3177         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
3178                    alg);
3179         return 0;
3180 }
3181
3182
3183 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
3184 {
3185         switch (cipher) {
3186         case WPA_CIPHER_CCMP_256:
3187                 return WLAN_CIPHER_SUITE_CCMP_256;
3188         case WPA_CIPHER_GCMP_256:
3189                 return WLAN_CIPHER_SUITE_GCMP_256;
3190         case WPA_CIPHER_CCMP:
3191                 return WLAN_CIPHER_SUITE_CCMP;
3192         case WPA_CIPHER_GCMP:
3193                 return WLAN_CIPHER_SUITE_GCMP;
3194         case WPA_CIPHER_TKIP:
3195                 return WLAN_CIPHER_SUITE_TKIP;
3196         case WPA_CIPHER_WEP104:
3197                 return WLAN_CIPHER_SUITE_WEP104;
3198         case WPA_CIPHER_WEP40:
3199                 return WLAN_CIPHER_SUITE_WEP40;
3200         case WPA_CIPHER_GTK_NOT_USED:
3201                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
3202         }
3203
3204         return 0;
3205 }
3206
3207
3208 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
3209                                        int max_suites)
3210 {
3211         int num_suites = 0;
3212
3213         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
3214                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
3215         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
3216                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
3217         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
3218                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
3219         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
3220                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
3221         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
3222                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
3223         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
3224                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
3225         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
3226                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
3227
3228         return num_suites;
3229 }
3230
3231
3232 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
3233                                   const u8 *key, size_t key_len)
3234 {
3235         struct nl_msg *msg;
3236         int ret;
3237
3238         if (!drv->key_mgmt_set_key_vendor_cmd_avail)
3239                 return 0;
3240
3241         msg = nlmsg_alloc();
3242         if (!msg)
3243                 return -1;
3244
3245         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR) ||
3246             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
3247             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
3248             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
3249                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
3250             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
3251                 nlmsg_free(msg);
3252                 return -1;
3253         }
3254         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3255         if (ret) {
3256                 wpa_printf(MSG_DEBUG,
3257                            "nl80211: Key management set key failed: ret=%d (%s)",
3258                            ret, strerror(-ret));
3259         }
3260
3261         return ret;
3262 }
3263
3264
3265 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
3266                                       enum wpa_alg alg, const u8 *addr,
3267                                       int key_idx, int set_tx,
3268                                       const u8 *seq, size_t seq_len,
3269                                       const u8 *key, size_t key_len)
3270 {
3271         struct wpa_driver_nl80211_data *drv = bss->drv;
3272         int ifindex;
3273         struct nl_msg *msg;
3274         int ret;
3275         int tdls = 0;
3276
3277         /* Ignore for P2P Device */
3278         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
3279                 return 0;
3280
3281         ifindex = if_nametoindex(ifname);
3282         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
3283                    "set_tx=%d seq_len=%lu key_len=%lu",
3284                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
3285                    (unsigned long) seq_len, (unsigned long) key_len);
3286 #ifdef CONFIG_TDLS
3287         if (key_idx == -1) {
3288                 key_idx = 0;
3289                 tdls = 1;
3290         }
3291 #endif /* CONFIG_TDLS */
3292
3293         if (alg == WPA_ALG_PMK && drv->key_mgmt_set_key_vendor_cmd_avail) {
3294                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
3295                            __func__);
3296                 ret = issue_key_mgmt_set_key(drv, key, key_len);
3297                 return ret;
3298         }
3299
3300         msg = nlmsg_alloc();
3301         if (!msg)
3302                 return -ENOMEM;
3303
3304         if (alg == WPA_ALG_NONE) {
3305                 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY))
3306                         goto fail;
3307         } else {
3308                 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY) ||
3309                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
3310                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
3311                                 wpa_alg_to_cipher_suite(alg, key_len)))
3312                         goto fail;
3313                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
3314         }
3315
3316         if (seq && seq_len) {
3317                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
3318                         goto fail;
3319                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
3320         }
3321
3322         if (addr && !is_broadcast_ether_addr(addr)) {
3323                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
3324                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
3325                         goto fail;
3326
3327                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3328                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
3329                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
3330                                         NL80211_KEYTYPE_GROUP))
3331                                 goto fail;
3332                 }
3333         } else if (addr && is_broadcast_ether_addr(addr)) {
3334                 struct nlattr *types;
3335
3336                 wpa_printf(MSG_DEBUG, "   broadcast key");
3337
3338                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3339                 if (!types ||
3340                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
3341                         goto fail;
3342                 nla_nest_end(msg, types);
3343         }
3344         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
3345             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex))
3346                 goto fail;
3347
3348         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3349         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3350                 ret = 0;
3351         if (ret)
3352                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3353                            ret, strerror(-ret));
3354
3355         /*
3356          * If we failed or don't need to set the default TX key (below),
3357          * we're done here.
3358          */
3359         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
3360                 return ret;
3361         if (is_ap_interface(drv->nlmode) && addr &&
3362             !is_broadcast_ether_addr(addr))
3363                 return ret;
3364
3365         msg = nlmsg_alloc();
3366         if (!msg)
3367                 return -ENOMEM;
3368
3369         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY) ||
3370             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
3371             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex) ||
3372             nla_put_flag(msg, alg == WPA_ALG_IGTK ?
3373                          NL80211_ATTR_KEY_DEFAULT_MGMT :
3374                          NL80211_ATTR_KEY_DEFAULT))
3375                 goto fail;
3376         if (addr && is_broadcast_ether_addr(addr)) {
3377                 struct nlattr *types;
3378
3379                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3380                 if (!types ||
3381                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
3382                         goto fail;
3383                 nla_nest_end(msg, types);
3384         } else if (addr) {
3385                 struct nlattr *types;
3386
3387                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3388                 if (!types ||
3389                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
3390                         goto fail;
3391                 nla_nest_end(msg, types);
3392         }
3393
3394         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3395         if (ret == -ENOENT)
3396                 ret = 0;
3397         if (ret)
3398                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3399                            "err=%d %s)", ret, strerror(-ret));
3400         return ret;
3401
3402 fail:
3403         nlmsg_free(msg);
3404         return -ENOBUFS;
3405 }
3406
3407
3408 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3409                       int key_idx, int defkey,
3410                       const u8 *seq, size_t seq_len,
3411                       const u8 *key, size_t key_len)
3412 {
3413         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3414         if (!key_attr)
3415                 return -1;
3416
3417         if (defkey && alg == WPA_ALG_IGTK) {
3418                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
3419                         return -1;
3420         } else if (defkey) {
3421                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
3422                         return -1;
3423         }
3424
3425         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
3426             nla_put_u32(msg, NL80211_KEY_CIPHER,
3427                         wpa_alg_to_cipher_suite(alg, key_len)) ||
3428             (seq && seq_len &&
3429              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
3430             nla_put(msg, NL80211_KEY_DATA, key_len, key))
3431                 return -1;
3432
3433         nla_nest_end(msg, key_attr);
3434
3435         return 0;
3436 }
3437
3438
3439 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3440                                  struct nl_msg *msg)
3441 {
3442         int i, privacy = 0;
3443         struct nlattr *nl_keys, *nl_key;
3444
3445         for (i = 0; i < 4; i++) {
3446                 if (!params->wep_key[i])
3447                         continue;
3448                 privacy = 1;
3449                 break;
3450         }
3451         if (params->wps == WPS_MODE_PRIVACY)
3452                 privacy = 1;
3453         if (params->pairwise_suite &&
3454             params->pairwise_suite != WPA_CIPHER_NONE)
3455                 privacy = 1;
3456
3457         if (!privacy)
3458                 return 0;
3459
3460         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3461                 return -ENOBUFS;
3462
3463         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3464         if (!nl_keys)
3465                 return -ENOBUFS;
3466
3467         for (i = 0; i < 4; i++) {
3468                 if (!params->wep_key[i])
3469                         continue;
3470
3471                 nl_key = nla_nest_start(msg, i);
3472                 if (!nl_key ||
3473                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3474                             params->wep_key[i]) ||
3475                     nla_put_u32(msg, NL80211_KEY_CIPHER,
3476                                 params->wep_key_len[i] == 5 ?
3477                                 WLAN_CIPHER_SUITE_WEP40 :
3478                                 WLAN_CIPHER_SUITE_WEP104) ||
3479                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
3480                     (i == params->wep_tx_keyidx &&
3481                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
3482                         return -ENOBUFS;
3483
3484                 nla_nest_end(msg, nl_key);
3485         }
3486         nla_nest_end(msg, nl_keys);
3487
3488         return 0;
3489 }
3490
3491
3492 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3493                                    const u8 *addr, int cmd, u16 reason_code,
3494                                    int local_state_change)
3495 {
3496         int ret;
3497         struct nl_msg *msg;
3498
3499         msg = nlmsg_alloc();
3500         if (!msg)
3501                 return -1;
3502
3503         if (!nl80211_cmd(drv, msg, 0, cmd) ||
3504             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
3505             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
3506             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
3507             (local_state_change &&
3508              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
3509                 nlmsg_free(msg);
3510                 return -1;
3511         }
3512
3513         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3514         if (ret) {
3515                 wpa_dbg(drv->ctx, MSG_DEBUG,
3516                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
3517                         reason_code, ret, strerror(-ret));
3518         }
3519         return ret;
3520 }
3521
3522
3523 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3524                                          int reason_code)
3525 {
3526         int ret;
3527
3528         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
3529         nl80211_mark_disconnected(drv);
3530         /* Disconnect command doesn't need BSSID - it uses cached value */
3531         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
3532                                       reason_code, 0);
3533         /*
3534          * For locally generated disconnect, supplicant already generates a
3535          * DEAUTH event, so ignore the event from NL80211.
3536          */
3537         drv->ignore_next_local_disconnect = ret == 0;
3538
3539         return ret;
3540 }
3541
3542
3543 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
3544                                              const u8 *addr, int reason_code)
3545 {
3546         struct wpa_driver_nl80211_data *drv = bss->drv;
3547         int ret;
3548
3549         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
3550                 nl80211_mark_disconnected(drv);
3551                 return nl80211_leave_ibss(drv);
3552         }
3553         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3554                 return wpa_driver_nl80211_disconnect(drv, reason_code);
3555         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3556                    __func__, MAC2STR(addr), reason_code);
3557         nl80211_mark_disconnected(drv);
3558         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3559                                       reason_code, 0);
3560         /*
3561          * For locally generated deauthenticate, supplicant already generates a
3562          * DEAUTH event, so ignore the event from NL80211.
3563          */
3564         drv->ignore_next_local_deauth = ret == 0;
3565         return ret;
3566 }
3567
3568
3569 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
3570                                      struct wpa_driver_auth_params *params)
3571 {
3572         int i;
3573
3574         drv->auth_freq = params->freq;
3575         drv->auth_alg = params->auth_alg;
3576         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
3577         drv->auth_local_state_change = params->local_state_change;
3578         drv->auth_p2p = params->p2p;
3579
3580         if (params->bssid)
3581                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
3582         else
3583                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
3584
3585         if (params->ssid) {
3586                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
3587                 drv->auth_ssid_len = params->ssid_len;
3588         } else
3589                 drv->auth_ssid_len = 0;
3590
3591
3592         os_free(drv->auth_ie);
3593         drv->auth_ie = NULL;
3594         drv->auth_ie_len = 0;
3595         if (params->ie) {
3596                 drv->auth_ie = os_malloc(params->ie_len);
3597                 if (drv->auth_ie) {
3598                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
3599                         drv->auth_ie_len = params->ie_len;
3600                 }
3601         }
3602
3603         for (i = 0; i < 4; i++) {
3604                 if (params->wep_key[i] && params->wep_key_len[i] &&
3605                     params->wep_key_len[i] <= 16) {
3606                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
3607                                   params->wep_key_len[i]);
3608                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
3609                 } else
3610                         drv->auth_wep_key_len[i] = 0;
3611         }
3612 }
3613
3614
3615 static int wpa_driver_nl80211_authenticate(
3616         struct i802_bss *bss, struct wpa_driver_auth_params *params)
3617 {
3618         struct wpa_driver_nl80211_data *drv = bss->drv;
3619         int ret = -1, i;
3620         struct nl_msg *msg;
3621         enum nl80211_auth_type type;
3622         enum nl80211_iftype nlmode;
3623         int count = 0;
3624         int is_retry;
3625
3626         is_retry = drv->retry_auth;
3627         drv->retry_auth = 0;
3628         drv->ignore_deauth_event = 0;
3629
3630         nl80211_mark_disconnected(drv);
3631         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3632         if (params->bssid)
3633                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3634         else
3635                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3636         /* FIX: IBSS mode */
3637         nlmode = params->p2p ?
3638                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3639         if (drv->nlmode != nlmode &&
3640             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3641                 return -1;
3642
3643 retry:
3644         msg = nlmsg_alloc();
3645         if (!msg)
3646                 return -1;
3647
3648         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3649                    drv->ifindex);
3650
3651         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3652
3653         for (i = 0; i < 4; i++) {
3654                 if (!params->wep_key[i])
3655                         continue;
3656                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3657                                            NULL, i,
3658                                            i == params->wep_tx_keyidx, NULL, 0,
3659                                            params->wep_key[i],
3660                                            params->wep_key_len[i]);
3661                 if (params->wep_tx_keyidx != i)
3662                         continue;
3663                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3664                                params->wep_key[i], params->wep_key_len[i])) {
3665                         nlmsg_free(msg);
3666                         return -1;
3667                 }
3668         }
3669
3670         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex))
3671                 goto fail;
3672         if (params->bssid) {
3673                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3674                            MAC2STR(params->bssid));
3675                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
3676                         goto fail;
3677         }
3678         if (params->freq) {
3679                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3680                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
3681                         goto fail;
3682         }
3683         if (params->ssid) {
3684                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3685                                   params->ssid, params->ssid_len);
3686                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
3687                             params->ssid))
3688                         goto fail;
3689         }
3690         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3691         if (params->ie &&
3692             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
3693                 goto fail;
3694         if (params->sae_data) {
3695                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3696                             params->sae_data_len);
3697                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3698                             params->sae_data))
3699                         goto fail;
3700         }
3701         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3702                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3703         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3704                 type = NL80211_AUTHTYPE_SHARED_KEY;
3705         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3706                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3707         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3708                 type = NL80211_AUTHTYPE_FT;
3709         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3710                 type = NL80211_AUTHTYPE_SAE;
3711         else
3712                 goto fail;
3713         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3714         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
3715                 goto fail;
3716         if (params->local_state_change) {
3717                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3718                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
3719                         goto fail;
3720         }
3721
3722         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3723         msg = NULL;
3724         if (ret) {
3725                 wpa_dbg(drv->ctx, MSG_DEBUG,
3726                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3727                         ret, strerror(-ret));
3728                 count++;
3729                 if (ret == -EALREADY && count == 1 && params->bssid &&
3730                     !params->local_state_change) {
3731                         /*
3732                          * mac80211 does not currently accept new
3733                          * authentication if we are already authenticated. As a
3734                          * workaround, force deauthentication and try again.
3735                          */
3736                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3737                                    "after forced deauthentication");
3738                         drv->ignore_deauth_event = 1;
3739                         wpa_driver_nl80211_deauthenticate(
3740                                 bss, params->bssid,
3741                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3742                         nlmsg_free(msg);
3743                         goto retry;
3744                 }
3745
3746                 if (ret == -ENOENT && params->freq && !is_retry) {
3747                         /*
3748                          * cfg80211 has likely expired the BSS entry even
3749                          * though it was previously available in our internal
3750                          * BSS table. To recover quickly, start a single
3751                          * channel scan on the specified channel.
3752                          */
3753                         struct wpa_driver_scan_params scan;
3754                         int freqs[2];
3755
3756                         os_memset(&scan, 0, sizeof(scan));
3757                         scan.num_ssids = 1;
3758                         if (params->ssid) {
3759                                 scan.ssids[0].ssid = params->ssid;
3760                                 scan.ssids[0].ssid_len = params->ssid_len;
3761                         }
3762                         freqs[0] = params->freq;
3763                         freqs[1] = 0;
3764                         scan.freqs = freqs;
3765                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3766                                    "channel scan to refresh cfg80211 BSS "
3767                                    "entry");
3768                         ret = wpa_driver_nl80211_scan(bss, &scan);
3769                         if (ret == 0) {
3770                                 nl80211_copy_auth_params(drv, params);
3771                                 drv->scan_for_auth = 1;
3772                         }
3773                 } else if (is_retry) {
3774                         /*
3775                          * Need to indicate this with an event since the return
3776                          * value from the retry is not delivered to core code.
3777                          */
3778                         union wpa_event_data event;
3779                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3780                                    "failed");
3781                         os_memset(&event, 0, sizeof(event));
3782                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3783                                   ETH_ALEN);
3784                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3785                                              &event);
3786                 }
3787         } else {
3788                 wpa_printf(MSG_DEBUG,
3789                            "nl80211: Authentication request send successfully");
3790         }
3791
3792 fail:
3793         nlmsg_free(msg);
3794         return ret;
3795 }
3796
3797
3798 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3799 {
3800         struct wpa_driver_auth_params params;
3801         struct i802_bss *bss = drv->first_bss;
3802         int i;
3803
3804         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3805
3806         os_memset(&params, 0, sizeof(params));
3807         params.freq = drv->auth_freq;
3808         params.auth_alg = drv->auth_alg;
3809         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3810         params.local_state_change = drv->auth_local_state_change;
3811         params.p2p = drv->auth_p2p;
3812
3813         if (!is_zero_ether_addr(drv->auth_bssid_))
3814                 params.bssid = drv->auth_bssid_;
3815
3816         if (drv->auth_ssid_len) {
3817                 params.ssid = drv->auth_ssid;
3818                 params.ssid_len = drv->auth_ssid_len;
3819         }
3820
3821         params.ie = drv->auth_ie;
3822         params.ie_len = drv->auth_ie_len;
3823
3824         for (i = 0; i < 4; i++) {
3825                 if (drv->auth_wep_key_len[i]) {
3826                         params.wep_key[i] = drv->auth_wep_key[i];
3827                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3828                 }
3829         }
3830
3831         drv->retry_auth = 1;
3832         return wpa_driver_nl80211_authenticate(bss, &params);
3833 }
3834
3835
3836 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3837                                          const void *data, size_t len,
3838                                          int encrypt, int noack,
3839                                          unsigned int freq, int no_cck,
3840                                          int offchanok, unsigned int wait_time)
3841 {
3842         struct wpa_driver_nl80211_data *drv = bss->drv;
3843         u64 cookie;
3844         int res;
3845
3846         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3847                 freq = nl80211_get_assoc_freq(drv);
3848                 wpa_printf(MSG_DEBUG,
3849                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3850                            freq);
3851         }
3852         if (freq == 0) {
3853                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3854                            bss->freq);
3855                 freq = bss->freq;
3856         }
3857
3858         if (drv->use_monitor) {
3859                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3860                            freq, bss->freq);
3861                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3862         }
3863
3864         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3865         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3866                                      &cookie, no_cck, noack, offchanok);
3867         if (res == 0 && !noack) {
3868                 const struct ieee80211_mgmt *mgmt;
3869                 u16 fc;
3870
3871                 mgmt = (const struct ieee80211_mgmt *) data;
3872                 fc = le_to_host16(mgmt->frame_control);
3873                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3874                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3875                         wpa_printf(MSG_MSGDUMP,
3876                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3877                                    (long long unsigned int)
3878                                    drv->send_action_cookie,
3879                                    (long long unsigned int) cookie);
3880                         drv->send_action_cookie = cookie;
3881                 }
3882         }
3883
3884         return res;
3885 }
3886
3887
3888 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3889                                         size_t data_len, int noack,
3890                                         unsigned int freq, int no_cck,
3891                                         int offchanok,
3892                                         unsigned int wait_time)
3893 {
3894         struct wpa_driver_nl80211_data *drv = bss->drv;
3895         struct ieee80211_mgmt *mgmt;
3896         int encrypt = 1;
3897         u16 fc;
3898
3899         mgmt = (struct ieee80211_mgmt *) data;
3900         fc = le_to_host16(mgmt->frame_control);
3901         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3902                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3903                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3904                    fc, fc2str(fc), drv->nlmode);
3905
3906         if ((is_sta_interface(drv->nlmode) ||
3907              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3908             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3909             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3910                 /*
3911                  * The use of last_mgmt_freq is a bit of a hack,
3912                  * but it works due to the single-threaded nature
3913                  * of wpa_supplicant.
3914                  */
3915                 if (freq == 0) {
3916                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3917                                    drv->last_mgmt_freq);
3918                         freq = drv->last_mgmt_freq;
3919                 }
3920                 return nl80211_send_frame_cmd(bss, freq, 0,
3921                                               data, data_len, NULL, 1, noack,
3922                                               1);
3923         }
3924
3925         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3926                 if (freq == 0) {
3927                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3928                                    bss->freq);
3929                         freq = bss->freq;
3930                 }
3931                 return nl80211_send_frame_cmd(bss, freq,
3932                                               (int) freq == bss->freq ? 0 :
3933                                               wait_time,
3934                                               data, data_len,
3935                                               &drv->send_action_cookie,
3936                                               no_cck, noack, offchanok);
3937         }
3938
3939         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3940             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3941                 /*
3942                  * Only one of the authentication frame types is encrypted.
3943                  * In order for static WEP encryption to work properly (i.e.,
3944                  * to not encrypt the frame), we need to tell mac80211 about
3945                  * the frames that must not be encrypted.
3946                  */
3947                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3948                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3949                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3950                         encrypt = 0;
3951         }
3952
3953         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3954         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3955                                              noack, freq, no_cck, offchanok,
3956                                              wait_time);
3957 }
3958
3959
3960 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3961                            int slot, int ht_opmode, int ap_isolate,
3962                            int *basic_rates)
3963 {
3964         struct wpa_driver_nl80211_data *drv = bss->drv;
3965         struct nl_msg *msg;
3966
3967         msg = nlmsg_alloc();
3968         if (!msg)
3969                 return -ENOMEM;
3970
3971         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS) ||
3972             (cts >= 0 &&
3973              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3974             (preamble >= 0 &&
3975              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3976             (slot >= 0 &&
3977              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3978             (ht_opmode >= 0 &&
3979              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3980             (ap_isolate >= 0 &&
3981              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)))
3982                 goto fail;
3983
3984         if (basic_rates) {
3985                 u8 rates[NL80211_MAX_SUPP_RATES];
3986                 u8 rates_len = 0;
3987                 int i;
3988
3989                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
3990                      i++)
3991                         rates[rates_len++] = basic_rates[i] / 5;
3992
3993                 if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
3994                             rates))
3995                         goto fail;
3996         }
3997
3998         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)))
3999                 goto fail;
4000
4001         return send_and_recv_msgs(drv, msg, NULL, NULL);
4002 fail:
4003         nlmsg_free(msg);
4004         return -ENOBUFS;
4005 }
4006
4007
4008 static int wpa_driver_nl80211_set_acl(void *priv,
4009                                       struct hostapd_acl_params *params)
4010 {
4011         struct i802_bss *bss = priv;
4012         struct wpa_driver_nl80211_data *drv = bss->drv;
4013         struct nl_msg *msg;
4014         struct nlattr *acl;
4015         unsigned int i;
4016         int ret;
4017
4018         if (!(drv->capa.max_acl_mac_addrs))
4019                 return -ENOTSUP;
4020
4021         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
4022                 return -ENOTSUP;
4023
4024         msg = nlmsg_alloc();
4025         if (!msg)
4026                 return -ENOMEM;
4027
4028         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
4029                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
4030
4031         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL) ||
4032             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
4033             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
4034                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
4035                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
4036             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
4037                 nlmsg_free(msg);
4038                 return -ENOMEM;
4039         }
4040
4041         for (i = 0; i < params->num_mac_acl; i++) {
4042                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
4043                         nlmsg_free(msg);
4044                         return -ENOMEM;
4045                 }
4046         }
4047
4048         nla_nest_end(msg, acl);
4049
4050         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4051         if (ret) {
4052                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
4053                            ret, strerror(-ret));
4054         }
4055
4056         return ret;
4057 }
4058
4059
4060 static int wpa_driver_nl80211_set_ap(void *priv,
4061                                      struct wpa_driver_ap_params *params)
4062 {
4063         struct i802_bss *bss = priv;
4064         struct wpa_driver_nl80211_data *drv = bss->drv;
4065         struct nl_msg *msg;
4066         u8 cmd = NL80211_CMD_NEW_BEACON;
4067         int ret;
4068         int beacon_set;
4069         int ifindex = if_nametoindex(bss->ifname);
4070         int num_suites;
4071         int smps_mode;
4072         u32 suites[10], suite;
4073         u32 ver;
4074
4075         beacon_set = bss->beacon_set;
4076
4077         msg = nlmsg_alloc();
4078         if (!msg)
4079                 return -ENOMEM;
4080
4081         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4082                    beacon_set);
4083         if (beacon_set)
4084                 cmd = NL80211_CMD_SET_BEACON;
4085
4086         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
4087                     params->head, params->head_len);
4088         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
4089                     params->tail, params->tail_len);
4090         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
4091         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
4092         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
4093         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
4094                           params->ssid, params->ssid_len);
4095         if (!nl80211_cmd(drv, msg, 0, cmd) ||
4096             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
4097                     params->head) ||
4098             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
4099                     params->tail) ||
4100             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex) ||
4101             nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
4102                         params->beacon_int) ||
4103             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
4104             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4105                 goto fail;
4106         if (params->proberesp && params->proberesp_len) {
4107                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
4108                             params->proberesp, params->proberesp_len);
4109                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
4110                             params->proberesp))
4111                         goto fail;
4112         }
4113         switch (params->hide_ssid) {
4114         case NO_SSID_HIDING:
4115                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
4116                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
4117                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
4118                         goto fail;
4119                 break;
4120         case HIDDEN_SSID_ZERO_LEN:
4121                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
4122                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
4123                                 NL80211_HIDDEN_SSID_ZERO_LEN))
4124                         goto fail;
4125                 break;
4126         case HIDDEN_SSID_ZERO_CONTENTS:
4127                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
4128                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
4129                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
4130                         goto fail;
4131                 break;
4132         }
4133         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
4134         if (params->privacy &&
4135             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
4136                 goto fail;
4137         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
4138         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4139             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4140                 /* Leave out the attribute */
4141         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
4142                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
4143                                 NL80211_AUTHTYPE_SHARED_KEY))
4144                         goto fail;
4145         } else {
4146                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
4147                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
4148                         goto fail;
4149         }
4150
4151         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
4152         ver = 0;
4153         if (params->wpa_version & WPA_PROTO_WPA)
4154                 ver |= NL80211_WPA_VERSION_1;
4155         if (params->wpa_version & WPA_PROTO_RSN)
4156                 ver |= NL80211_WPA_VERSION_2;
4157         if (ver &&
4158             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4159                 goto fail;
4160
4161         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
4162                    params->key_mgmt_suites);
4163         num_suites = 0;
4164         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4165                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4166         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4167                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4168         if (num_suites &&
4169             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
4170                     suites))
4171                 goto fail;
4172
4173         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
4174             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
4175             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
4176                 goto fail;
4177
4178         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
4179                    params->pairwise_ciphers);
4180         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
4181                                                  suites, ARRAY_SIZE(suites));
4182         if (num_suites &&
4183             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4184                     num_suites * sizeof(u32), suites))
4185                 goto fail;
4186
4187         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
4188                    params->group_cipher);
4189         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
4190         if (suite &&
4191             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
4192                 goto fail;
4193
4194         switch (params->smps_mode) {
4195         case HT_CAP_INFO_SMPS_DYNAMIC:
4196                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
4197                 smps_mode = NL80211_SMPS_DYNAMIC;
4198                 break;
4199         case HT_CAP_INFO_SMPS_STATIC:
4200                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
4201                 smps_mode = NL80211_SMPS_STATIC;
4202                 break;
4203         default:
4204                 /* invalid - fallback to smps off */
4205         case HT_CAP_INFO_SMPS_DISABLED:
4206                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
4207                 smps_mode = NL80211_SMPS_OFF;
4208                 break;
4209         }
4210         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
4211                 goto fail;
4212
4213         if (params->beacon_ies) {
4214                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
4215                                 params->beacon_ies);
4216                 if (nla_put(msg, NL80211_ATTR_IE,
4217                             wpabuf_len(params->beacon_ies),
4218                             wpabuf_head(params->beacon_ies)))
4219                         goto fail;
4220         }
4221         if (params->proberesp_ies) {
4222                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
4223                                 params->proberesp_ies);
4224                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
4225                             wpabuf_len(params->proberesp_ies),
4226                             wpabuf_head(params->proberesp_ies)))
4227                         goto fail;
4228         }
4229         if (params->assocresp_ies) {
4230                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
4231                                 params->assocresp_ies);
4232                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
4233                             wpabuf_len(params->assocresp_ies),
4234                             wpabuf_head(params->assocresp_ies)))
4235                         goto fail;
4236         }
4237
4238         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
4239                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
4240                            params->ap_max_inactivity);
4241                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
4242                                 params->ap_max_inactivity))
4243                         goto fail;
4244         }
4245
4246         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4247         if (ret) {
4248                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4249                            ret, strerror(-ret));
4250         } else {
4251                 bss->beacon_set = 1;
4252                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4253                                 params->short_slot_time, params->ht_opmode,
4254                                 params->isolate, params->basic_rates);
4255                 if (beacon_set && params->freq &&
4256                     params->freq->bandwidth != bss->bandwidth) {
4257                         wpa_printf(MSG_DEBUG,
4258                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
4259                                    bss->ifname, bss->bandwidth,
4260                                    params->freq->bandwidth);
4261                         ret = nl80211_set_channel(bss, params->freq, 1);
4262                         if (ret) {
4263                                 wpa_printf(MSG_DEBUG,
4264                                            "nl80211: Frequency set failed: %d (%s)",
4265                                            ret, strerror(-ret));
4266                         } else {
4267                                 wpa_printf(MSG_DEBUG,
4268                                            "nl80211: Frequency set succeeded for ht2040 coex");
4269                                 bss->bandwidth = params->freq->bandwidth;
4270                         }
4271                 } else if (!beacon_set) {
4272                         /*
4273                          * cfg80211 updates the driver on frequence change in AP
4274                          * mode only at the point when beaconing is started, so
4275                          * set the initial value here.
4276                          */
4277                         bss->bandwidth = params->freq->bandwidth;
4278                 }
4279         }
4280         return ret;
4281 fail:
4282         nlmsg_free(msg);
4283         return -ENOBUFS;
4284 }
4285
4286
4287 static int nl80211_put_freq_params(struct nl_msg *msg,
4288                                    struct hostapd_freq_params *freq)
4289 {
4290         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
4291                 return -ENOBUFS;
4292
4293         if (freq->vht_enabled) {
4294                 enum nl80211_chan_width cw;
4295
4296                 switch (freq->bandwidth) {
4297                 case 20:
4298                         cw = NL80211_CHAN_WIDTH_20;
4299                         break;
4300                 case 40:
4301                         cw = NL80211_CHAN_WIDTH_40;
4302                         break;
4303                 case 80:
4304                         if (freq->center_freq2)
4305                                 cw = NL80211_CHAN_WIDTH_80P80;
4306                         else
4307                                 cw = NL80211_CHAN_WIDTH_80;
4308                         break;
4309                 case 160:
4310                         cw = NL80211_CHAN_WIDTH_160;
4311                         break;
4312                 default:
4313                         return -EINVAL;
4314                 }
4315
4316                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
4317                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
4318                                 freq->center_freq1) ||
4319                     (freq->center_freq2 &&
4320                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
4321                                  freq->center_freq2)))
4322                         return -ENOBUFS;
4323         } else if (freq->ht_enabled) {
4324                 enum nl80211_channel_type ct;
4325
4326                 switch (freq->sec_channel_offset) {
4327                 case -1:
4328                         ct = NL80211_CHAN_HT40MINUS;
4329                         break;
4330                 case 1:
4331                         ct = NL80211_CHAN_HT40PLUS;
4332                         break;
4333                 default:
4334                         ct = NL80211_CHAN_HT20;
4335                         break;
4336                 }
4337
4338                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
4339                         return -ENOBUFS;
4340         }
4341         return 0;
4342 }
4343
4344
4345 static int nl80211_set_channel(struct i802_bss *bss,
4346                                struct hostapd_freq_params *freq, int set_chan)
4347 {
4348         struct wpa_driver_nl80211_data *drv = bss->drv;
4349         struct nl_msg *msg;
4350         int ret;
4351
4352         wpa_printf(MSG_DEBUG,
4353                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
4354                    freq->freq, freq->ht_enabled, freq->vht_enabled,
4355                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
4356         msg = nlmsg_alloc();
4357         if (!msg)
4358                 return -1;
4359
4360         if (!nl80211_cmd(drv, msg, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
4361                          NL80211_CMD_SET_WIPHY) ||
4362             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
4363             nl80211_put_freq_params(msg, freq) < 0) {
4364                 nlmsg_free(msg);
4365                 return -1;
4366         }
4367
4368         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4369         if (ret == 0) {
4370                 bss->freq = freq->freq;
4371                 return 0;
4372         }
4373         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4374                    "%d (%s)", freq->freq, ret, strerror(-ret));
4375         return -1;
4376 }
4377
4378
4379 static u32 sta_flags_nl80211(int flags)
4380 {
4381         u32 f = 0;
4382
4383         if (flags & WPA_STA_AUTHORIZED)
4384                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4385         if (flags & WPA_STA_WMM)
4386                 f |= BIT(NL80211_STA_FLAG_WME);
4387         if (flags & WPA_STA_SHORT_PREAMBLE)
4388                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4389         if (flags & WPA_STA_MFP)
4390                 f |= BIT(NL80211_STA_FLAG_MFP);
4391         if (flags & WPA_STA_TDLS_PEER)
4392                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4393         if (flags & WPA_STA_AUTHENTICATED)
4394                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4395
4396         return f;
4397 }
4398
4399
4400 #ifdef CONFIG_MESH
4401 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
4402 {
4403         switch (state) {
4404         case PLINK_LISTEN:
4405                 return NL80211_PLINK_LISTEN;
4406         case PLINK_OPEN_SENT:
4407                 return NL80211_PLINK_OPN_SNT;
4408         case PLINK_OPEN_RCVD:
4409                 return NL80211_PLINK_OPN_RCVD;
4410         case PLINK_CNF_RCVD:
4411                 return NL80211_PLINK_CNF_RCVD;
4412         case PLINK_ESTAB:
4413                 return NL80211_PLINK_ESTAB;
4414         case PLINK_HOLDING:
4415                 return NL80211_PLINK_HOLDING;
4416         case PLINK_BLOCKED:
4417                 return NL80211_PLINK_BLOCKED;
4418         default:
4419                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
4420                            state);
4421         }
4422         return -1;
4423 }
4424 #endif /* CONFIG_MESH */
4425
4426
4427 static int wpa_driver_nl80211_sta_add(void *priv,
4428                                       struct hostapd_sta_add_params *params)
4429 {
4430         struct i802_bss *bss = priv;
4431         struct wpa_driver_nl80211_data *drv = bss->drv;
4432         struct nl_msg *msg;
4433         struct nl80211_sta_flag_update upd;
4434         int ret = -ENOBUFS;
4435
4436         if ((params->flags & WPA_STA_TDLS_PEER) &&
4437             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4438                 return -EOPNOTSUPP;
4439
4440         msg = nlmsg_alloc();
4441         if (!msg)
4442                 return -ENOMEM;
4443
4444         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
4445                    params->set ? "Set" : "Add", MAC2STR(params->addr));
4446         if (!nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4447                          NL80211_CMD_NEW_STATION) ||
4448             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)) ||
4449             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
4450                 goto fail;
4451
4452         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
4453                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
4454                             params->supp_rates, params->supp_rates_len);
4455                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
4456                            params->capability);
4457                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
4458                             params->supp_rates_len, params->supp_rates) ||
4459                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
4460                                 params->capability))
4461                         goto fail;
4462
4463                 if (params->ht_capabilities) {
4464                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
4465                                     (u8 *) params->ht_capabilities,
4466                                     sizeof(*params->ht_capabilities));
4467                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
4468                                     sizeof(*params->ht_capabilities),
4469                                     params->ht_capabilities))
4470                                 goto fail;
4471                 }
4472
4473                 if (params->vht_capabilities) {
4474                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
4475                                     (u8 *) params->vht_capabilities,
4476                                     sizeof(*params->vht_capabilities));
4477                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
4478                                     sizeof(*params->vht_capabilities),
4479                                     params->vht_capabilities))
4480                                 goto fail;
4481                 }
4482
4483                 if (params->ext_capab) {
4484                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
4485                                     params->ext_capab, params->ext_capab_len);
4486                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
4487                                     params->ext_capab_len, params->ext_capab))
4488                                 goto fail;
4489                 }
4490         }
4491         if (!params->set) {
4492                 if (params->aid) {
4493                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
4494                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
4495                                 goto fail;
4496                 } else {
4497                         /*
4498                          * cfg80211 validates that AID is non-zero, so we have
4499                          * to make this a non-zero value for the TDLS case where
4500                          * a dummy STA entry is used for now.
4501                          */
4502                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
4503                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
4504                                 goto fail;
4505                 }
4506                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
4507                            params->listen_interval);
4508                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4509                                 params->listen_interval))
4510                         goto fail;
4511         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
4512                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
4513                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
4514                         goto fail;
4515         }
4516
4517         if (params->vht_opmode_enabled) {
4518                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
4519                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
4520                                params->vht_opmode))
4521                         goto fail;
4522         }
4523
4524         if (params->supp_channels) {
4525                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
4526                             params->supp_channels, params->supp_channels_len);
4527                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4528                             params->supp_channels_len, params->supp_channels))
4529                         goto fail;
4530         }
4531
4532         if (params->supp_oper_classes) {
4533                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
4534                             params->supp_oper_classes,
4535                             params->supp_oper_classes_len);
4536                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4537                             params->supp_oper_classes_len,
4538                             params->supp_oper_classes))
4539                         goto fail;
4540         }
4541
4542         os_memset(&upd, 0, sizeof(upd));
4543         upd.set = sta_flags_nl80211(params->flags);
4544         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4545         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
4546                    upd.set, upd.mask);
4547         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4548                 goto fail;
4549
4550 #ifdef CONFIG_MESH
4551         if (params->plink_state &&
4552             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
4553                        sta_plink_state_nl80211(params->plink_state)))
4554                 goto fail;
4555 #endif /* CONFIG_MESH */
4556
4557         if (params->flags & WPA_STA_WMM) {
4558                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4559
4560                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
4561                 if (!wme ||
4562                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4563                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
4564                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
4565                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4566                                WMM_QOSINFO_STA_SP_MASK))
4567                         goto fail;
4568                 nla_nest_end(msg, wme);
4569         }
4570
4571         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4572         msg = NULL;
4573         if (ret)
4574                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4575                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4576                            strerror(-ret));
4577         if (ret == -EEXIST)
4578                 ret = 0;
4579 fail:
4580         nlmsg_free(msg);
4581         return ret;
4582 }
4583
4584
4585 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4586 {
4587 #ifdef CONFIG_LIBNL3_ROUTE
4588         struct wpa_driver_nl80211_data *drv = bss->drv;
4589         struct rtnl_neigh *rn;
4590         struct nl_addr *nl_addr;
4591         int err;
4592
4593         rn = rtnl_neigh_alloc();
4594         if (!rn)
4595                 return;
4596
4597         rtnl_neigh_set_family(rn, AF_BRIDGE);
4598         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4599         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4600         if (!nl_addr) {
4601                 rtnl_neigh_put(rn);
4602                 return;
4603         }
4604         rtnl_neigh_set_lladdr(rn, nl_addr);
4605
4606         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4607         if (err < 0) {
4608                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4609                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4610                            bss->ifindex, nl_geterror(err));
4611         } else {
4612                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4613                            MACSTR, MAC2STR(addr));
4614         }
4615
4616         nl_addr_put(nl_addr);
4617         rtnl_neigh_put(rn);
4618 #endif /* CONFIG_LIBNL3_ROUTE */
4619 }
4620
4621
4622 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4623                                          int deauth, u16 reason_code)
4624 {
4625         struct wpa_driver_nl80211_data *drv = bss->drv;
4626         struct nl_msg *msg;
4627         int ret;
4628
4629         msg = nlmsg_alloc();
4630         if (!msg)
4631                 return -ENOMEM;
4632
4633         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION) ||
4634             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)) ||
4635             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
4636             (deauth == 0 &&
4637              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4638                         WLAN_FC_STYPE_DISASSOC)) ||
4639             (deauth == 1 &&
4640              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4641                         WLAN_FC_STYPE_DEAUTH)) ||
4642             (reason_code &&
4643              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
4644                 nlmsg_free(msg);
4645                 return -ENOBUFS;
4646         }
4647
4648         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4649         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4650                    " --> %d (%s)",
4651                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4652
4653         if (drv->rtnl_sk)
4654                 rtnl_neigh_delete_fdb_entry(bss, addr);
4655
4656         if (ret == -ENOENT)
4657                 return 0;
4658         return ret;
4659 }
4660
4661
4662 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4663 {
4664         struct nl_msg *msg;
4665         struct wpa_driver_nl80211_data *drv2;
4666
4667         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4668
4669         /* stop listening for EAPOL on this interface */
4670         dl_list_for_each(drv2, &drv->global->interfaces,
4671                          struct wpa_driver_nl80211_data, list)
4672                 del_ifidx(drv2, ifidx);
4673
4674         msg = nlmsg_alloc();
4675         if (!msg)
4676                 return;
4677
4678         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE) ||
4679             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifidx)) {
4680                 nlmsg_free(msg);
4681                 goto fail;
4682         }
4683
4684         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4685                 return;
4686 fail:
4687         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4688 }
4689
4690
4691 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4692 {
4693         switch (mode) {
4694         case NL80211_IFTYPE_ADHOC:
4695                 return "ADHOC";
4696         case NL80211_IFTYPE_STATION:
4697                 return "STATION";
4698         case NL80211_IFTYPE_AP:
4699                 return "AP";
4700         case NL80211_IFTYPE_AP_VLAN:
4701                 return "AP_VLAN";
4702         case NL80211_IFTYPE_WDS:
4703                 return "WDS";
4704         case NL80211_IFTYPE_MONITOR:
4705                 return "MONITOR";
4706         case NL80211_IFTYPE_MESH_POINT:
4707                 return "MESH_POINT";
4708         case NL80211_IFTYPE_P2P_CLIENT:
4709                 return "P2P_CLIENT";
4710         case NL80211_IFTYPE_P2P_GO:
4711                 return "P2P_GO";
4712         case NL80211_IFTYPE_P2P_DEVICE:
4713                 return "P2P_DEVICE";
4714         default:
4715                 return "unknown";
4716         }
4717 }
4718
4719
4720 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4721                                      const char *ifname,
4722                                      enum nl80211_iftype iftype,
4723                                      const u8 *addr, int wds,
4724                                      int (*handler)(struct nl_msg *, void *),
4725                                      void *arg)
4726 {
4727         struct nl_msg *msg;
4728         int ifidx;
4729         int ret = -ENOBUFS;
4730
4731         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4732                    iftype, nl80211_iftype_str(iftype));
4733
4734         msg = nlmsg_alloc();
4735         if (!msg)
4736                 return -1;
4737
4738         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE) ||
4739             nl80211_set_iface_id(msg, drv->first_bss) < 0 ||
4740             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
4741             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
4742                 goto fail;
4743
4744         if (iftype == NL80211_IFTYPE_MONITOR) {
4745                 struct nlattr *flags;
4746
4747                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4748                 if (!flags ||
4749                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
4750                         goto fail;
4751
4752                 nla_nest_end(msg, flags);
4753         } else if (wds) {
4754                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4755                         goto fail;
4756         }
4757
4758         /*
4759          * Tell cfg80211 that the interface belongs to the socket that created
4760          * it, and the interface should be deleted when the socket is closed.
4761          */
4762         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4763                 goto fail;
4764
4765         ret = send_and_recv_msgs(drv, msg, handler, arg);
4766         msg = NULL;
4767         if (ret) {
4768         fail:
4769                 nlmsg_free(msg);
4770                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4771                            ifname, ret, strerror(-ret));
4772                 return ret;
4773         }
4774
4775         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4776                 return 0;
4777
4778         ifidx = if_nametoindex(ifname);
4779         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4780                    ifname, ifidx);
4781
4782         if (ifidx <= 0)
4783                 return -1;
4784
4785         /*
4786          * Some virtual interfaces need to process EAPOL packets and events on
4787          * the parent interface. This is used mainly with hostapd.
4788          */
4789         if (drv->hostapd ||
4790             iftype == NL80211_IFTYPE_AP_VLAN ||
4791             iftype == NL80211_IFTYPE_WDS ||
4792             iftype == NL80211_IFTYPE_MONITOR) {
4793                 /* start listening for EAPOL on this interface */
4794                 add_ifidx(drv, ifidx);
4795         }
4796
4797         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4798             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4799                 nl80211_remove_iface(drv, ifidx);
4800                 return -1;
4801         }
4802
4803         return ifidx;
4804 }
4805
4806
4807 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4808                          const char *ifname, enum nl80211_iftype iftype,
4809                          const u8 *addr, int wds,
4810                          int (*handler)(struct nl_msg *, void *),
4811                          void *arg, int use_existing)
4812 {
4813         int ret;
4814
4815         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4816                                         arg);
4817
4818         /* if error occurred and interface exists already */
4819         if (ret == -ENFILE && if_nametoindex(ifname)) {
4820                 if (use_existing) {
4821                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4822                                    ifname);
4823                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4824                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4825                                                addr) < 0 &&
4826                             (linux_set_iface_flags(drv->global->ioctl_sock,
4827                                                    ifname, 0) < 0 ||
4828                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4829                                                 addr) < 0 ||
4830                              linux_set_iface_flags(drv->global->ioctl_sock,
4831                                                    ifname, 1) < 0))
4832                                         return -1;
4833                         return -ENFILE;
4834                 }
4835                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4836
4837                 /* Try to remove the interface that was already there. */
4838                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4839
4840                 /* Try to create the interface again */
4841                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4842                                                 wds, handler, arg);
4843         }
4844
4845         if (ret >= 0 && is_p2p_net_interface(iftype))
4846                 nl80211_disable_11b_rates(drv, ret, 1);
4847
4848         return ret;
4849 }
4850
4851
4852 static int nl80211_setup_ap(struct i802_bss *bss)
4853 {
4854         struct wpa_driver_nl80211_data *drv = bss->drv;
4855
4856         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4857                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4858
4859         /*
4860          * Disable Probe Request reporting unless we need it in this way for
4861          * devices that include the AP SME, in the other case (unless using
4862          * monitor iface) we'll get it through the nl_mgmt socket instead.
4863          */
4864         if (!drv->device_ap_sme)
4865                 wpa_driver_nl80211_probe_req_report(bss, 0);
4866
4867         if (!drv->device_ap_sme && !drv->use_monitor)
4868                 if (nl80211_mgmt_subscribe_ap(bss))
4869                         return -1;
4870
4871         if (drv->device_ap_sme && !drv->use_monitor)
4872                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4873                         return -1;
4874
4875         if (!drv->device_ap_sme && drv->use_monitor &&
4876             nl80211_create_monitor_interface(drv) &&
4877             !drv->device_ap_sme)
4878                 return -1;
4879
4880         if (drv->device_ap_sme &&
4881             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4882                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4883                            "Probe Request frame reporting in AP mode");
4884                 /* Try to survive without this */
4885         }
4886
4887         return 0;
4888 }
4889
4890
4891 static void nl80211_teardown_ap(struct i802_bss *bss)
4892 {
4893         struct wpa_driver_nl80211_data *drv = bss->drv;
4894
4895         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4896                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4897         if (drv->device_ap_sme) {
4898                 wpa_driver_nl80211_probe_req_report(bss, 0);
4899                 if (!drv->use_monitor)
4900                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4901         } else if (drv->use_monitor)
4902                 nl80211_remove_monitor_interface(drv);
4903         else
4904                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4905
4906         bss->beacon_set = 0;
4907 }
4908
4909
4910 static int nl80211_send_eapol_data(struct i802_bss *bss,
4911                                    const u8 *addr, const u8 *data,
4912                                    size_t data_len)
4913 {
4914         struct sockaddr_ll ll;
4915         int ret;
4916
4917         if (bss->drv->eapol_tx_sock < 0) {
4918                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4919                 return -1;
4920         }
4921
4922         os_memset(&ll, 0, sizeof(ll));
4923         ll.sll_family = AF_PACKET;
4924         ll.sll_ifindex = bss->ifindex;
4925         ll.sll_protocol = htons(ETH_P_PAE);
4926         ll.sll_halen = ETH_ALEN;
4927         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4928         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4929                      (struct sockaddr *) &ll, sizeof(ll));
4930         if (ret < 0)
4931                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4932                            strerror(errno));
4933
4934         return ret;
4935 }
4936
4937
4938 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4939
4940 static int wpa_driver_nl80211_hapd_send_eapol(
4941         void *priv, const u8 *addr, const u8 *data,
4942         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4943 {
4944         struct i802_bss *bss = priv;
4945         struct wpa_driver_nl80211_data *drv = bss->drv;
4946         struct ieee80211_hdr *hdr;
4947         size_t len;
4948         u8 *pos;
4949         int res;
4950         int qos = flags & WPA_STA_WMM;
4951
4952         if (drv->device_ap_sme || !drv->use_monitor)
4953                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4954
4955         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4956                 data_len;
4957         hdr = os_zalloc(len);
4958         if (hdr == NULL) {
4959                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4960                            (unsigned long) len);
4961                 return -1;
4962         }
4963
4964         hdr->frame_control =
4965                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4966         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4967         if (encrypt)
4968                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4969         if (qos) {
4970                 hdr->frame_control |=
4971                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4972         }
4973
4974         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4975         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4976         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4977         pos = (u8 *) (hdr + 1);
4978
4979         if (qos) {
4980                 /* Set highest priority in QoS header */
4981                 pos[0] = 7;
4982                 pos[1] = 0;
4983                 pos += 2;
4984         }
4985
4986         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4987         pos += sizeof(rfc1042_header);
4988         WPA_PUT_BE16(pos, ETH_P_PAE);
4989         pos += 2;
4990         memcpy(pos, data, data_len);
4991
4992         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4993                                             0, 0, 0, 0);
4994         if (res < 0) {
4995                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4996                            "failed: %d (%s)",
4997                            (unsigned long) len, errno, strerror(errno));
4998         }
4999         os_free(hdr);
5000
5001         return res;
5002 }
5003
5004
5005 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
5006                                             int total_flags,
5007                                             int flags_or, int flags_and)
5008 {
5009         struct i802_bss *bss = priv;
5010         struct wpa_driver_nl80211_data *drv = bss->drv;
5011         struct nl_msg *msg;
5012         struct nlattr *flags;
5013         struct nl80211_sta_flag_update upd;
5014
5015         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
5016                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
5017                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
5018                    !!(total_flags & WPA_STA_AUTHORIZED));
5019
5020         msg = nlmsg_alloc();
5021         if (!msg)
5022                 return -ENOMEM;
5023
5024         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION) ||
5025             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
5026                         if_nametoindex(bss->ifname)) ||
5027             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
5028                 goto fail;
5029
5030         /*
5031          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
5032          * can be removed eventually.
5033          */
5034         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
5035         if (!flags ||
5036             ((total_flags & WPA_STA_AUTHORIZED) &&
5037              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
5038             ((total_flags & WPA_STA_WMM) &&
5039              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
5040             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
5041              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
5042             ((total_flags & WPA_STA_MFP) &&
5043              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
5044             ((total_flags & WPA_STA_TDLS_PEER) &&
5045              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
5046                 goto fail;
5047
5048         nla_nest_end(msg, flags);
5049
5050         os_memset(&upd, 0, sizeof(upd));
5051         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
5052         upd.set = sta_flags_nl80211(flags_or);
5053         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
5054                 goto fail;
5055
5056         return send_and_recv_msgs(drv, msg, NULL, NULL);
5057 fail:
5058         nlmsg_free(msg);
5059         return -ENOBUFS;
5060 }
5061
5062
5063 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
5064                                  struct wpa_driver_associate_params *params)
5065 {
5066         enum nl80211_iftype nlmode, old_mode;
5067
5068         if (params->p2p) {
5069                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
5070                            "group (GO)");
5071                 nlmode = NL80211_IFTYPE_P2P_GO;
5072         } else
5073                 nlmode = NL80211_IFTYPE_AP;
5074
5075         old_mode = drv->nlmode;
5076         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
5077                 nl80211_remove_monitor_interface(drv);
5078                 return -1;
5079         }
5080
5081         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
5082                 if (old_mode != nlmode)
5083                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
5084                 nl80211_remove_monitor_interface(drv);
5085                 return -1;
5086         }
5087
5088         return 0;
5089 }
5090
5091
5092 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5093 {
5094         struct nl_msg *msg;
5095         int ret = -1;
5096
5097         msg = nlmsg_alloc();
5098         if (!msg)
5099                 return -1;
5100
5101         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS) ||
5102             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex))
5103                 goto fail;
5104
5105         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5106         msg = NULL;
5107         if (ret) {
5108                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5109                            "(%s)", ret, strerror(-ret));
5110                 goto fail;
5111         }
5112
5113         ret = 0;
5114         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5115
5116 fail:
5117         if (wpa_driver_nl80211_set_mode(drv->first_bss,
5118                                         NL80211_IFTYPE_STATION)) {
5119                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5120                            "station mode");
5121         }
5122
5123         nlmsg_free(msg);
5124         return ret;
5125 }
5126
5127
5128 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5129                                    struct wpa_driver_associate_params *params)
5130 {
5131         struct nl_msg *msg;
5132         int ret = -1;
5133         int count = 0;
5134
5135         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5136
5137         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
5138                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5139                            "IBSS mode");
5140                 return -1;
5141         }
5142
5143 retry:
5144         msg = nlmsg_alloc();
5145         if (!msg)
5146                 return -1;
5147
5148         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS) ||
5149             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
5150             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5151                 goto fail;
5152
5153         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5154                           params->ssid, params->ssid_len);
5155         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
5156                 goto fail;
5157         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5158         drv->ssid_len = params->ssid_len;
5159
5160         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5161         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", params->freq.ht_enabled);
5162         wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
5163                    params->freq.sec_channel_offset);
5164         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", params->freq.vht_enabled);
5165         wpa_printf(MSG_DEBUG, "  * center_freq1=%d", params->freq.center_freq1);
5166         wpa_printf(MSG_DEBUG, "  * center_freq2=%d", params->freq.center_freq2);
5167         wpa_printf(MSG_DEBUG, "  * bandwidth=%d", params->freq.bandwidth);
5168         if (nl80211_put_freq_params(msg, &params->freq) < 0)
5169                 goto fail;
5170
5171         if (params->beacon_int > 0) {
5172                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", params->beacon_int);
5173                 if (nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
5174                                 params->beacon_int))
5175                         goto fail;
5176         }
5177
5178         ret = nl80211_set_conn_keys(params, msg);
5179         if (ret)
5180                 goto fail;
5181
5182         if (params->bssid && params->fixed_bssid) {
5183                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
5184                            MAC2STR(params->bssid));
5185                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
5186                         goto fail;
5187         }
5188
5189         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5190             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5191             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5192             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
5193                 wpa_printf(MSG_DEBUG, "  * control port");
5194                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
5195                         goto fail;
5196         }
5197
5198         if (params->wpa_ie) {
5199                 wpa_hexdump(MSG_DEBUG,
5200                             "  * Extra IEs for Beacon/Probe Response frames",
5201                             params->wpa_ie, params->wpa_ie_len);
5202                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5203                             params->wpa_ie))
5204                         goto fail;
5205         }
5206
5207         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5208         msg = NULL;
5209         if (ret) {
5210                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5211                            ret, strerror(-ret));
5212                 count++;
5213                 if (ret == -EALREADY && count == 1) {
5214                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5215                                    "forced leave");
5216                         nl80211_leave_ibss(drv);
5217                         nlmsg_free(msg);
5218                         goto retry;
5219                 }
5220         } else {
5221                 wpa_printf(MSG_DEBUG,
5222                            "nl80211: Join IBSS request sent successfully");
5223         }
5224
5225 fail:
5226         nlmsg_free(msg);
5227         return ret;
5228 }
5229
5230
5231 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
5232                                   struct wpa_driver_associate_params *params,
5233                                   struct nl_msg *msg)
5234 {
5235         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex))
5236                 return -1;
5237
5238         if (params->bssid) {
5239                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5240                            MAC2STR(params->bssid));
5241                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
5242                         return -1;
5243         }
5244
5245         if (params->bssid_hint) {
5246                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
5247                            MAC2STR(params->bssid_hint));
5248                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
5249                             params->bssid_hint))
5250                         return -1;
5251         }
5252
5253         if (params->freq.freq) {
5254                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5255                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
5256                                 params->freq.freq))
5257                         return -1;
5258                 drv->assoc_freq = params->freq.freq;
5259         } else
5260                 drv->assoc_freq = 0;
5261
5262         if (params->freq_hint) {
5263                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
5264                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
5265                                 params->freq_hint))
5266                         return -1;
5267         }
5268
5269         if (params->bg_scan_period >= 0) {
5270                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
5271                            params->bg_scan_period);
5272                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
5273                                 params->bg_scan_period))
5274                         return -1;
5275         }
5276
5277         if (params->ssid) {
5278                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5279                                   params->ssid, params->ssid_len);
5280                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
5281                             params->ssid))
5282                         return -1;
5283                 if (params->ssid_len > sizeof(drv->ssid))
5284                         return -1;
5285                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5286                 drv->ssid_len = params->ssid_len;
5287         }
5288
5289         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
5290         if (params->wpa_ie &&
5291             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
5292                 return -1;
5293
5294         if (params->wpa_proto) {
5295                 enum nl80211_wpa_versions ver = 0;
5296
5297                 if (params->wpa_proto & WPA_PROTO_WPA)
5298                         ver |= NL80211_WPA_VERSION_1;
5299                 if (params->wpa_proto & WPA_PROTO_RSN)
5300                         ver |= NL80211_WPA_VERSION_2;
5301
5302                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
5303                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
5304                         return -1;
5305         }
5306
5307         if (params->pairwise_suite != WPA_CIPHER_NONE) {
5308                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
5309                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
5310                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
5311                                 cipher))
5312                         return -1;
5313         }
5314
5315         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
5316             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
5317                 /*
5318                  * This is likely to work even though many drivers do not
5319                  * advertise support for operations without GTK.
5320                  */
5321                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
5322         } else if (params->group_suite != WPA_CIPHER_NONE) {
5323                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
5324                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
5325                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
5326                         return -1;
5327         }
5328
5329         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5330             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5331             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
5332             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
5333             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
5334             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
5335             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5336             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5337             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
5338                 int mgmt = WLAN_AKM_SUITE_PSK;
5339
5340                 switch (params->key_mgmt_suite) {
5341                 case WPA_KEY_MGMT_CCKM:
5342                         mgmt = WLAN_AKM_SUITE_CCKM;
5343                         break;
5344                 case WPA_KEY_MGMT_IEEE8021X:
5345                         mgmt = WLAN_AKM_SUITE_8021X;
5346                         break;
5347                 case WPA_KEY_MGMT_FT_IEEE8021X:
5348                         mgmt = WLAN_AKM_SUITE_FT_8021X;
5349                         break;
5350                 case WPA_KEY_MGMT_FT_PSK:
5351                         mgmt = WLAN_AKM_SUITE_FT_PSK;
5352                         break;
5353                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
5354                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
5355                         break;
5356                 case WPA_KEY_MGMT_PSK_SHA256:
5357                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
5358                         break;
5359                 case WPA_KEY_MGMT_OSEN:
5360                         mgmt = WLAN_AKM_SUITE_OSEN;
5361                         break;
5362                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
5363                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
5364                         break;
5365                 case WPA_KEY_MGMT_PSK:
5366                 default:
5367                         mgmt = WLAN_AKM_SUITE_PSK;
5368                         break;
5369                 }
5370                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
5371                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
5372                         return -1;
5373         }
5374
5375         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
5376                 return -1;
5377
5378         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
5379             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
5380                 return -1;
5381
5382         if (params->rrm_used) {
5383                 u32 drv_rrm_flags = drv->capa.rrm_flags;
5384                 if (!(drv_rrm_flags &
5385                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
5386                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
5387                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
5388                         return -1;
5389         }
5390
5391         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
5392                 return -1;
5393
5394         if (params->htcaps && params->htcaps_mask) {
5395                 int sz = sizeof(struct ieee80211_ht_capabilities);
5396                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
5397                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
5398                             params->htcaps_mask, sz);
5399                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
5400                             params->htcaps) ||
5401                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
5402                             params->htcaps_mask))
5403                         return -1;
5404         }
5405
5406 #ifdef CONFIG_VHT_OVERRIDES
5407         if (params->disable_vht) {
5408                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
5409                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
5410                         return -1;
5411         }
5412
5413         if (params->vhtcaps && params->vhtcaps_mask) {
5414                 int sz = sizeof(struct ieee80211_vht_capabilities);
5415                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
5416                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
5417                             params->vhtcaps_mask, sz);
5418                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
5419                             params->vhtcaps) ||
5420                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
5421                             params->vhtcaps_mask))
5422                         return -1;
5423         }
5424 #endif /* CONFIG_VHT_OVERRIDES */
5425
5426         if (params->p2p)
5427                 wpa_printf(MSG_DEBUG, "  * P2P group");
5428
5429         return 0;
5430 }
5431
5432
5433 static int wpa_driver_nl80211_try_connect(
5434         struct wpa_driver_nl80211_data *drv,
5435         struct wpa_driver_associate_params *params)
5436 {
5437         struct nl_msg *msg;
5438         enum nl80211_auth_type type;
5439         int ret;
5440         int algs;
5441
5442         if (params->req_key_mgmt_offload && params->psk &&
5443             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5444              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5445              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
5446                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
5447                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
5448                 if (ret)
5449                         return ret;
5450         }
5451
5452         msg = nlmsg_alloc();
5453         if (!msg)
5454                 return -1;
5455
5456         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5457         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5458
5459         ret = nl80211_connect_common(drv, params, msg);
5460         if (ret)
5461                 goto fail;
5462
5463         algs = 0;
5464         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5465                 algs++;
5466         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5467                 algs++;
5468         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5469                 algs++;
5470         if (algs > 1) {
5471                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
5472                            "selection");
5473                 goto skip_auth_type;
5474         }
5475
5476         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5477                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5478         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5479                 type = NL80211_AUTHTYPE_SHARED_KEY;
5480         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5481                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5482         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5483                 type = NL80211_AUTHTYPE_FT;
5484         else
5485                 goto fail;
5486
5487         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5488         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
5489                 goto fail;
5490
5491 skip_auth_type:
5492         ret = nl80211_set_conn_keys(params, msg);
5493         if (ret)
5494                 goto fail;
5495
5496         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5497         msg = NULL;
5498         if (ret) {
5499                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5500                            "(%s)", ret, strerror(-ret));
5501         } else {
5502                 wpa_printf(MSG_DEBUG,
5503                            "nl80211: Connect request send successfully");
5504         }
5505
5506 fail:
5507         nlmsg_free(msg);
5508         return ret;
5509
5510 }
5511
5512
5513 static int wpa_driver_nl80211_connect(
5514         struct wpa_driver_nl80211_data *drv,
5515         struct wpa_driver_associate_params *params)
5516 {
5517         int ret;
5518
5519         /* Store the connection attempted bssid for future use */
5520         if (params->bssid)
5521                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5522         else
5523                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5524
5525         ret = wpa_driver_nl80211_try_connect(drv, params);
5526         if (ret == -EALREADY) {
5527                 /*
5528                  * cfg80211 does not currently accept new connections if
5529                  * we are already connected. As a workaround, force
5530                  * disconnection and try again.
5531                  */
5532                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5533                            "disconnecting before reassociation "
5534                            "attempt");
5535                 if (wpa_driver_nl80211_disconnect(
5536                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5537                         return -1;
5538                 ret = wpa_driver_nl80211_try_connect(drv, params);
5539         }
5540         return ret;
5541 }
5542
5543
5544 static int wpa_driver_nl80211_associate(
5545         void *priv, struct wpa_driver_associate_params *params)
5546 {
5547         struct i802_bss *bss = priv;
5548         struct wpa_driver_nl80211_data *drv = bss->drv;
5549         int ret = -1;
5550         struct nl_msg *msg;
5551
5552         if (params->mode == IEEE80211_MODE_AP)
5553                 return wpa_driver_nl80211_ap(drv, params);
5554
5555         if (params->mode == IEEE80211_MODE_IBSS)
5556                 return wpa_driver_nl80211_ibss(drv, params);
5557
5558         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5559                 enum nl80211_iftype nlmode = params->p2p ?
5560                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5561
5562                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5563                         return -1;
5564                 return wpa_driver_nl80211_connect(drv, params);
5565         }
5566
5567         nl80211_mark_disconnected(drv);
5568
5569         msg = nlmsg_alloc();
5570         if (!msg)
5571                 return -1;
5572
5573         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5574                    drv->ifindex);
5575         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE))
5576                 goto fail;
5577
5578         ret = nl80211_connect_common(drv, params, msg);
5579         if (ret)
5580                 goto fail;
5581
5582         if (params->prev_bssid) {
5583                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
5584                            MAC2STR(params->prev_bssid));
5585                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5586                             params->prev_bssid))
5587                         goto fail;
5588         }
5589
5590         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5591         msg = NULL;
5592         if (ret) {
5593                 wpa_dbg(drv->ctx, MSG_DEBUG,
5594                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
5595                         ret, strerror(-ret));
5596                 nl80211_dump_scan(drv);
5597         } else {
5598                 wpa_printf(MSG_DEBUG,
5599                            "nl80211: Association request send successfully");
5600         }
5601
5602 fail:
5603         nlmsg_free(msg);
5604         return ret;
5605 }
5606
5607
5608 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5609                             int ifindex, enum nl80211_iftype mode)
5610 {
5611         struct nl_msg *msg;
5612         int ret = -ENOBUFS;
5613
5614         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5615                    ifindex, mode, nl80211_iftype_str(mode));
5616
5617         msg = nlmsg_alloc();
5618         if (!msg)
5619                 return -ENOMEM;
5620
5621         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE) ||
5622             nl80211_set_iface_id(msg, drv->first_bss) < 0 ||
5623             nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
5624                 goto fail;
5625
5626         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5627         msg = NULL;
5628         if (!ret)
5629                 return 0;
5630 fail:
5631         nlmsg_free(msg);
5632         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5633                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5634         return ret;
5635 }
5636
5637
5638 static int wpa_driver_nl80211_set_mode_impl(
5639                 struct i802_bss *bss,
5640                 enum nl80211_iftype nlmode,
5641                 struct hostapd_freq_params *desired_freq_params)
5642 {
5643         struct wpa_driver_nl80211_data *drv = bss->drv;
5644         int ret = -1;
5645         int i;
5646         int was_ap = is_ap_interface(drv->nlmode);
5647         int res;
5648         int mode_switch_res;
5649
5650         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5651         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5652                 mode_switch_res = 0;
5653
5654         if (mode_switch_res == 0) {
5655                 drv->nlmode = nlmode;
5656                 ret = 0;
5657                 goto done;
5658         }
5659
5660         if (mode_switch_res == -ENODEV)
5661                 return -1;
5662
5663         if (nlmode == drv->nlmode) {
5664                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5665                            "requested mode - ignore error");
5666                 ret = 0;
5667                 goto done; /* Already in the requested mode */
5668         }
5669
5670         /* mac80211 doesn't allow mode changes while the device is up, so
5671          * take the device down, try to set the mode again, and bring the
5672          * device back up.
5673          */
5674         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5675                    "interface down");
5676         for (i = 0; i < 10; i++) {
5677                 res = i802_set_iface_flags(bss, 0);
5678                 if (res == -EACCES || res == -ENODEV)
5679                         break;
5680                 if (res != 0) {
5681                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5682                                    "interface down");
5683                         os_sleep(0, 100000);
5684                         continue;
5685                 }
5686
5687                 /*
5688                  * Setting the mode will fail for some drivers if the phy is
5689                  * on a frequency that the mode is disallowed in.
5690                  */
5691                 if (desired_freq_params) {
5692                         res = i802_set_freq(bss, desired_freq_params);
5693                         if (res) {
5694                                 wpa_printf(MSG_DEBUG,
5695                                            "nl80211: Failed to set frequency on interface");
5696                         }
5697                 }
5698
5699                 /* Try to set the mode again while the interface is down */
5700                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5701                 if (mode_switch_res == -EBUSY) {
5702                         wpa_printf(MSG_DEBUG,
5703                                    "nl80211: Delaying mode set while interface going down");
5704                         os_sleep(0, 100000);
5705                         continue;
5706                 }
5707                 ret = mode_switch_res;
5708                 break;
5709         }
5710
5711         if (!ret) {
5712                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5713                            "interface is down");
5714                 drv->nlmode = nlmode;
5715                 drv->ignore_if_down_event = 1;
5716         }
5717
5718         /* Bring the interface back up */
5719         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5720         if (res != 0) {
5721                 wpa_printf(MSG_DEBUG,
5722                            "nl80211: Failed to set interface up after switching mode");
5723                 ret = -1;
5724         }
5725
5726 done:
5727         if (ret) {
5728                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5729                            "from %d failed", nlmode, drv->nlmode);
5730                 return ret;
5731         }
5732
5733         if (is_p2p_net_interface(nlmode))
5734                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5735         else if (drv->disabled_11b_rates)
5736                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5737
5738         if (is_ap_interface(nlmode)) {
5739                 nl80211_mgmt_unsubscribe(bss, "start AP");
5740                 /* Setup additional AP mode functionality if needed */
5741                 if (nl80211_setup_ap(bss))
5742                         return -1;
5743         } else if (was_ap) {
5744                 /* Remove additional AP mode functionality */
5745                 nl80211_teardown_ap(bss);
5746         } else {
5747                 nl80211_mgmt_unsubscribe(bss, "mode change");
5748         }
5749
5750         if (is_mesh_interface(nlmode) &&
5751             nl80211_mgmt_subscribe_mesh(bss))
5752                 return -1;
5753
5754         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5755             !is_mesh_interface(nlmode) &&
5756             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5757                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5758                            "frame processing - ignore for now");
5759
5760         return 0;
5761 }
5762
5763
5764 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5765                                 enum nl80211_iftype nlmode)
5766 {
5767         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5768 }
5769
5770
5771 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5772                                             struct hostapd_freq_params *freq)
5773 {
5774         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5775                                                 freq);
5776 }
5777
5778
5779 static int wpa_driver_nl80211_get_capa(void *priv,
5780                                        struct wpa_driver_capa *capa)
5781 {
5782         struct i802_bss *bss = priv;
5783         struct wpa_driver_nl80211_data *drv = bss->drv;
5784
5785         if (!drv->has_capability)
5786                 return -1;
5787         os_memcpy(capa, &drv->capa, sizeof(*capa));
5788         if (drv->extended_capa && drv->extended_capa_mask) {
5789                 capa->extended_capa = drv->extended_capa;
5790                 capa->extended_capa_mask = drv->extended_capa_mask;
5791                 capa->extended_capa_len = drv->extended_capa_len;
5792         }
5793
5794         return 0;
5795 }
5796
5797
5798 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5799 {
5800         struct i802_bss *bss = priv;
5801         struct wpa_driver_nl80211_data *drv = bss->drv;
5802
5803         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5804                    bss->ifname, drv->operstate, state,
5805                    state ? "UP" : "DORMANT");
5806         drv->operstate = state;
5807         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5808                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5809 }
5810
5811
5812 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5813 {
5814         struct i802_bss *bss = priv;
5815         struct wpa_driver_nl80211_data *drv = bss->drv;
5816         struct nl_msg *msg;
5817         struct nl80211_sta_flag_update upd;
5818         int ret;
5819
5820         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5821                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5822                 return 0;
5823         }
5824
5825         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5826                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5827
5828         msg = nlmsg_alloc();
5829         if (!msg)
5830                 return -ENOMEM;
5831
5832         os_memset(&upd, 0, sizeof(upd));
5833         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5834         if (authorized)
5835                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5836
5837         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION) ||
5838             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
5839                         if_nametoindex(bss->ifname)) ||
5840             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5841             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5842                 nlmsg_free(msg);
5843                 return -ENOBUFS;
5844         }
5845
5846         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5847         if (!ret)
5848                 return 0;
5849         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5850                    ret, strerror(-ret));
5851         return ret;
5852 }
5853
5854
5855 /* Set kernel driver on given frequency (MHz) */
5856 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5857 {
5858         struct i802_bss *bss = priv;
5859         return nl80211_set_channel(bss, freq, 0);
5860 }
5861
5862
5863 static inline int min_int(int a, int b)
5864 {
5865         if (a < b)
5866                 return a;
5867         return b;
5868 }
5869
5870
5871 static int get_key_handler(struct nl_msg *msg, void *arg)
5872 {
5873         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5874         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5875
5876         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5877                   genlmsg_attrlen(gnlh, 0), NULL);
5878
5879         /*
5880          * TODO: validate the key index and mac address!
5881          * Otherwise, there's a race condition as soon as
5882          * the kernel starts sending key notifications.
5883          */
5884
5885         if (tb[NL80211_ATTR_KEY_SEQ])
5886                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5887                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5888         return NL_SKIP;
5889 }
5890
5891
5892 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5893                            int idx, u8 *seq)
5894 {
5895         struct i802_bss *bss = priv;
5896         struct wpa_driver_nl80211_data *drv = bss->drv;
5897         struct nl_msg *msg;
5898
5899         msg = nlmsg_alloc();
5900         if (!msg)
5901                 return -ENOMEM;
5902
5903         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY) ||
5904             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5905             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx) ||
5906             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface))) {
5907                 nlmsg_free(msg);
5908                 return -ENOBUFS;
5909         }
5910
5911         memset(seq, 0, 6);
5912
5913         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5914 }
5915
5916
5917 static int i802_set_rts(void *priv, int rts)
5918 {
5919         struct i802_bss *bss = priv;
5920         struct wpa_driver_nl80211_data *drv = bss->drv;
5921         struct nl_msg *msg;
5922         int ret;
5923         u32 val;
5924
5925         msg = nlmsg_alloc();
5926         if (!msg)
5927                 return -ENOMEM;
5928
5929         if (rts >= 2347)
5930                 val = (u32) -1;
5931         else
5932                 val = rts;
5933
5934         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY) ||
5935             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
5936             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5937                 nlmsg_free(msg);
5938                 return -ENOBUFS;
5939         }
5940
5941         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5942         if (!ret)
5943                 return 0;
5944         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5945                    "%d (%s)", rts, ret, strerror(-ret));
5946         return ret;
5947 }
5948
5949
5950 static int i802_set_frag(void *priv, int frag)
5951 {
5952         struct i802_bss *bss = priv;
5953         struct wpa_driver_nl80211_data *drv = bss->drv;
5954         struct nl_msg *msg;
5955         int ret;
5956         u32 val;
5957
5958         msg = nlmsg_alloc();
5959         if (!msg)
5960                 return -ENOMEM;
5961
5962         if (frag >= 2346)
5963                 val = (u32) -1;
5964         else
5965                 val = frag;
5966
5967         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY) ||
5968             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
5969             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5970                 nlmsg_free(msg);
5971                 return -ENOBUFS;
5972         }
5973
5974         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5975         if (!ret)
5976                 return 0;
5977         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5978                    "%d: %d (%s)", frag, ret, strerror(-ret));
5979         return ret;
5980 }
5981
5982
5983 static int i802_flush(void *priv)
5984 {
5985         struct i802_bss *bss = priv;
5986         struct wpa_driver_nl80211_data *drv = bss->drv;
5987         struct nl_msg *msg;
5988         int res;
5989
5990         msg = nlmsg_alloc();
5991         if (!msg)
5992                 return -1;
5993
5994         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5995                    bss->ifname);
5996         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5997
5998         /*
5999          * XXX: FIX! this needs to flush all VLANs too
6000          */
6001         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX,
6002                         if_nametoindex(bss->ifname))) {
6003                 nlmsg_free(msg);
6004                 return -ENOBUFS;
6005         }
6006
6007         res = send_and_recv_msgs(drv, msg, NULL, NULL);
6008         if (res) {
6009                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
6010                            "(%s)", res, strerror(-res));
6011         }
6012         return res;
6013 }
6014
6015
6016 static int get_sta_handler(struct nl_msg *msg, void *arg)
6017 {
6018         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6019         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6020         struct hostap_sta_driver_data *data = arg;
6021         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
6022         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
6023                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
6024                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
6025                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
6026                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
6027                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
6028                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
6029         };
6030
6031         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6032                   genlmsg_attrlen(gnlh, 0), NULL);
6033
6034         /*
6035          * TODO: validate the interface and mac address!
6036          * Otherwise, there's a race condition as soon as
6037          * the kernel starts sending station notifications.
6038          */
6039
6040         if (!tb[NL80211_ATTR_STA_INFO]) {
6041                 wpa_printf(MSG_DEBUG, "sta stats missing!");
6042                 return NL_SKIP;
6043         }
6044         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
6045                              tb[NL80211_ATTR_STA_INFO],
6046                              stats_policy)) {
6047                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
6048                 return NL_SKIP;
6049         }
6050
6051         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
6052                 data->inactive_msec =
6053                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
6054         if (stats[NL80211_STA_INFO_RX_BYTES])
6055                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
6056         if (stats[NL80211_STA_INFO_TX_BYTES])
6057                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
6058         if (stats[NL80211_STA_INFO_RX_PACKETS])
6059                 data->rx_packets =
6060                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
6061         if (stats[NL80211_STA_INFO_TX_PACKETS])
6062                 data->tx_packets =
6063                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
6064         if (stats[NL80211_STA_INFO_TX_FAILED])
6065                 data->tx_retry_failed =
6066                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
6067
6068         return NL_SKIP;
6069 }
6070
6071 static int i802_read_sta_data(struct i802_bss *bss,
6072                               struct hostap_sta_driver_data *data,
6073                               const u8 *addr)
6074 {
6075         struct wpa_driver_nl80211_data *drv = bss->drv;
6076         struct nl_msg *msg;
6077
6078         os_memset(data, 0, sizeof(*data));
6079         msg = nlmsg_alloc();
6080         if (!msg)
6081                 return -ENOMEM;
6082
6083         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION) ||
6084             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
6085             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
6086                         if_nametoindex(bss->ifname))) {
6087                 nlmsg_free(msg);
6088                 return -ENOBUFS;
6089         }
6090
6091         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
6092 }
6093
6094
6095 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
6096                                     int cw_min, int cw_max, int burst_time)
6097 {
6098         struct i802_bss *bss = priv;
6099         struct wpa_driver_nl80211_data *drv = bss->drv;
6100         struct nl_msg *msg;
6101         struct nlattr *txq, *params;
6102
6103         msg = nlmsg_alloc();
6104         if (!msg)
6105                 return -1;
6106
6107         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY) ||
6108             nla_put_u32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname)))
6109                 goto fail;
6110
6111         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
6112         if (!txq)
6113                 goto fail;
6114
6115         /* We are only sending parameters for a single TXQ at a time */
6116         params = nla_nest_start(msg, 1);
6117         if (!params)
6118                 goto fail;
6119
6120         switch (queue) {
6121         case 0:
6122                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
6123                         goto fail;
6124                 break;
6125         case 1:
6126                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
6127                         goto fail;
6128                 break;
6129         case 2:
6130                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
6131                         goto fail;
6132                 break;
6133         case 3:
6134                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
6135                         goto fail;
6136                 break;
6137         }
6138         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6139          * 32 usec, so need to convert the value here. */
6140         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
6141                         (burst_time * 100 + 16) / 32) ||
6142             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
6143             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
6144             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
6145                 goto fail;
6146
6147         nla_nest_end(msg, params);
6148
6149         nla_nest_end(msg, txq);
6150
6151         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6152                 return 0;
6153         msg = NULL;
6154 fail:
6155         nlmsg_free(msg);
6156         return -1;
6157 }
6158
6159
6160 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
6161                              const char *ifname, int vlan_id)
6162 {
6163         struct wpa_driver_nl80211_data *drv = bss->drv;
6164         struct nl_msg *msg;
6165         int ret;
6166
6167         msg = nlmsg_alloc();
6168         if (!msg)
6169                 return -ENOMEM;
6170
6171         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
6172                    ", ifname=%s[%d], vlan_id=%d)",
6173                    bss->ifname, if_nametoindex(bss->ifname),
6174                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
6175         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION) ||
6176             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
6177                         if_nametoindex(bss->ifname)) ||
6178             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
6179             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
6180                 nlmsg_free(msg);
6181                 return -ENOBUFS;
6182         }
6183
6184         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6185         if (ret < 0) {
6186                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6187                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6188                            MAC2STR(addr), ifname, vlan_id, ret,
6189                            strerror(-ret));
6190         }
6191         return ret;
6192 }
6193
6194
6195 static int i802_get_inact_sec(void *priv, const u8 *addr)
6196 {
6197         struct hostap_sta_driver_data data;
6198         int ret;
6199
6200         data.inactive_msec = (unsigned long) -1;
6201         ret = i802_read_sta_data(priv, &data, addr);
6202         if (ret || data.inactive_msec == (unsigned long) -1)
6203                 return -1;
6204         return data.inactive_msec / 1000;
6205 }
6206
6207
6208 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6209 {
6210 #if 0
6211         /* TODO */
6212 #endif
6213         return 0;
6214 }
6215
6216
6217 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6218                            int reason)
6219 {
6220         struct i802_bss *bss = priv;
6221         struct wpa_driver_nl80211_data *drv = bss->drv;
6222         struct ieee80211_mgmt mgmt;
6223
6224         if (is_mesh_interface(drv->nlmode))
6225                 return -1;
6226
6227         if (drv->device_ap_sme)
6228                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
6229
6230         memset(&mgmt, 0, sizeof(mgmt));
6231         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6232                                           WLAN_FC_STYPE_DEAUTH);
6233         memcpy(mgmt.da, addr, ETH_ALEN);
6234         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6235         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6236         mgmt.u.deauth.reason_code = host_to_le16(reason);
6237         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6238                                             IEEE80211_HDRLEN +
6239                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
6240                                             0);
6241 }
6242
6243
6244 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6245                              int reason)
6246 {
6247         struct i802_bss *bss = priv;
6248         struct wpa_driver_nl80211_data *drv = bss->drv;
6249         struct ieee80211_mgmt mgmt;
6250
6251         if (is_mesh_interface(drv->nlmode))
6252                 return -1;
6253
6254         if (drv->device_ap_sme)
6255                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
6256
6257         memset(&mgmt, 0, sizeof(mgmt));
6258         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6259                                           WLAN_FC_STYPE_DISASSOC);
6260         memcpy(mgmt.da, addr, ETH_ALEN);
6261         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6262         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6263         mgmt.u.disassoc.reason_code = host_to_le16(reason);
6264         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6265                                             IEEE80211_HDRLEN +
6266                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
6267                                             0);
6268 }
6269
6270
6271 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
6272 {
6273         char buf[200], *pos, *end;
6274         int i, res;
6275
6276         pos = buf;
6277         end = pos + sizeof(buf);
6278
6279         for (i = 0; i < drv->num_if_indices; i++) {
6280                 if (!drv->if_indices[i])
6281                         continue;
6282                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
6283                 if (res < 0 || res >= end - pos)
6284                         break;
6285                 pos += res;
6286         }
6287         *pos = '\0';
6288
6289         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
6290                    drv->num_if_indices, buf);
6291 }
6292
6293
6294 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6295 {
6296         int i;
6297         int *old;
6298
6299         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6300                    ifidx);
6301         if (have_ifidx(drv, ifidx)) {
6302                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
6303                            ifidx);
6304                 return;
6305         }
6306         for (i = 0; i < drv->num_if_indices; i++) {
6307                 if (drv->if_indices[i] == 0) {
6308                         drv->if_indices[i] = ifidx;
6309                         dump_ifidx(drv);
6310                         return;
6311                 }
6312         }
6313
6314         if (drv->if_indices != drv->default_if_indices)
6315                 old = drv->if_indices;
6316         else
6317                 old = NULL;
6318
6319         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
6320                                            sizeof(int));
6321         if (!drv->if_indices) {
6322                 if (!old)
6323                         drv->if_indices = drv->default_if_indices;
6324                 else
6325                         drv->if_indices = old;
6326                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6327                            "interfaces");
6328                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6329                 return;
6330         } else if (!old)
6331                 os_memcpy(drv->if_indices, drv->default_if_indices,
6332                           sizeof(drv->default_if_indices));
6333         drv->if_indices[drv->num_if_indices] = ifidx;
6334         drv->num_if_indices++;
6335         dump_ifidx(drv);
6336 }
6337
6338
6339 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6340 {
6341         int i;
6342
6343         for (i = 0; i < drv->num_if_indices; i++) {
6344                 if (drv->if_indices[i] == ifidx) {
6345                         drv->if_indices[i] = 0;
6346                         break;
6347                 }
6348         }
6349         dump_ifidx(drv);
6350 }
6351
6352
6353 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6354 {
6355         int i;
6356
6357         for (i = 0; i < drv->num_if_indices; i++)
6358                 if (drv->if_indices[i] == ifidx)
6359                         return 1;
6360
6361         return 0;
6362 }
6363
6364
6365 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6366                             const char *bridge_ifname, char *ifname_wds)
6367 {
6368         struct i802_bss *bss = priv;
6369         struct wpa_driver_nl80211_data *drv = bss->drv;
6370         char name[IFNAMSIZ + 1];
6371
6372         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6373         if (ifname_wds)
6374                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
6375
6376         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6377                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6378         if (val) {
6379                 if (!if_nametoindex(name)) {
6380                         if (nl80211_create_iface(drv, name,
6381                                                  NL80211_IFTYPE_AP_VLAN,
6382                                                  bss->addr, 1, NULL, NULL, 0) <
6383                             0)
6384                                 return -1;
6385                         if (bridge_ifname &&
6386                             linux_br_add_if(drv->global->ioctl_sock,
6387                                             bridge_ifname, name) < 0)
6388                                 return -1;
6389                 }
6390                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
6391                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
6392                                    "interface %s up", name);
6393                 }
6394                 return i802_set_sta_vlan(priv, addr, name, 0);
6395         } else {
6396                 if (bridge_ifname)
6397                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
6398                                         name);
6399
6400                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6401                 nl80211_remove_iface(drv, if_nametoindex(name));
6402                 return 0;
6403         }
6404 }
6405
6406
6407 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6408 {
6409         struct wpa_driver_nl80211_data *drv = eloop_ctx;
6410         struct sockaddr_ll lladdr;
6411         unsigned char buf[3000];
6412         int len;
6413         socklen_t fromlen = sizeof(lladdr);
6414
6415         len = recvfrom(sock, buf, sizeof(buf), 0,
6416                        (struct sockaddr *)&lladdr, &fromlen);
6417         if (len < 0) {
6418                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
6419                            strerror(errno));
6420                 return;
6421         }
6422
6423         if (have_ifidx(drv, lladdr.sll_ifindex))
6424                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6425 }
6426
6427
6428 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6429                              struct i802_bss *bss,
6430                              const char *brname, const char *ifname)
6431 {
6432         int br_ifindex;
6433         char in_br[IFNAMSIZ];
6434
6435         os_strlcpy(bss->brname, brname, IFNAMSIZ);
6436         br_ifindex = if_nametoindex(brname);
6437         if (br_ifindex == 0) {
6438                 /*
6439                  * Bridge was configured, but the bridge device does
6440                  * not exist. Try to add it now.
6441                  */
6442                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6443                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6444                                    "bridge interface %s: %s",
6445                                    brname, strerror(errno));
6446                         return -1;
6447                 }
6448                 bss->added_bridge = 1;
6449                 br_ifindex = if_nametoindex(brname);
6450                 add_ifidx(drv, br_ifindex);
6451         }
6452         bss->br_ifindex = br_ifindex;
6453
6454         if (linux_br_get(in_br, ifname) == 0) {
6455                 if (os_strcmp(in_br, brname) == 0)
6456                         return 0; /* already in the bridge */
6457
6458                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6459                            "bridge %s", ifname, in_br);
6460                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6461                     0) {
6462                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
6463                                    "remove interface %s from bridge "
6464                                    "%s: %s",
6465                                    ifname, brname, strerror(errno));
6466                         return -1;
6467                 }
6468         }
6469
6470         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6471                    ifname, brname);
6472         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6473                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6474                            "into bridge %s: %s",
6475                            ifname, brname, strerror(errno));
6476                 return -1;
6477         }
6478         bss->added_if_into_bridge = 1;
6479
6480         return 0;
6481 }
6482
6483
6484 static void *i802_init(struct hostapd_data *hapd,
6485                        struct wpa_init_params *params)
6486 {
6487         struct wpa_driver_nl80211_data *drv;
6488         struct i802_bss *bss;
6489         size_t i;
6490         char brname[IFNAMSIZ];
6491         int ifindex, br_ifindex;
6492         int br_added = 0;
6493
6494         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6495                                           params->global_priv, 1,
6496                                           params->bssid, params->driver_params);
6497         if (bss == NULL)
6498                 return NULL;
6499
6500         drv = bss->drv;
6501
6502         if (linux_br_get(brname, params->ifname) == 0) {
6503                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6504                            params->ifname, brname);
6505                 br_ifindex = if_nametoindex(brname);
6506                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6507         } else {
6508                 brname[0] = '\0';
6509                 br_ifindex = 0;
6510         }
6511         bss->br_ifindex = br_ifindex;
6512
6513         for (i = 0; i < params->num_bridge; i++) {
6514                 if (params->bridge[i]) {
6515                         ifindex = if_nametoindex(params->bridge[i]);
6516                         if (ifindex)
6517                                 add_ifidx(drv, ifindex);
6518                         if (ifindex == br_ifindex)
6519                                 br_added = 1;
6520                 }
6521         }
6522         if (!br_added && br_ifindex &&
6523             (params->num_bridge == 0 || !params->bridge[0]))
6524                 add_ifidx(drv, br_ifindex);
6525
6526         /* start listening for EAPOL on the default AP interface */
6527         add_ifidx(drv, drv->ifindex);
6528
6529         if (params->num_bridge && params->bridge[0] &&
6530             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6531                 goto failed;
6532
6533 #ifdef CONFIG_LIBNL3_ROUTE
6534         if (bss->added_if_into_bridge) {
6535                 drv->rtnl_sk = nl_socket_alloc();
6536                 if (drv->rtnl_sk == NULL) {
6537                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6538                         goto failed;
6539                 }
6540
6541                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6542                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6543                                    strerror(errno));
6544                         goto failed;
6545                 }
6546         }
6547 #endif /* CONFIG_LIBNL3_ROUTE */
6548
6549         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6550         if (drv->eapol_sock < 0) {
6551                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6552                            strerror(errno));
6553                 goto failed;
6554         }
6555
6556         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6557         {
6558                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6559                 goto failed;
6560         }
6561
6562         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6563                                params->own_addr))
6564                 goto failed;
6565         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6566
6567         memcpy(bss->addr, params->own_addr, ETH_ALEN);
6568
6569         return bss;
6570
6571 failed:
6572         wpa_driver_nl80211_deinit(bss);
6573         return NULL;
6574 }
6575
6576
6577 static void i802_deinit(void *priv)
6578 {
6579         struct i802_bss *bss = priv;
6580         wpa_driver_nl80211_deinit(bss);
6581 }
6582
6583
6584 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6585         enum wpa_driver_if_type type)
6586 {
6587         switch (type) {
6588         case WPA_IF_STATION:
6589                 return NL80211_IFTYPE_STATION;
6590         case WPA_IF_P2P_CLIENT:
6591         case WPA_IF_P2P_GROUP:
6592                 return NL80211_IFTYPE_P2P_CLIENT;
6593         case WPA_IF_AP_VLAN:
6594                 return NL80211_IFTYPE_AP_VLAN;
6595         case WPA_IF_AP_BSS:
6596                 return NL80211_IFTYPE_AP;
6597         case WPA_IF_P2P_GO:
6598                 return NL80211_IFTYPE_P2P_GO;
6599         case WPA_IF_P2P_DEVICE:
6600                 return NL80211_IFTYPE_P2P_DEVICE;
6601         }
6602         return -1;
6603 }
6604
6605
6606 #ifdef CONFIG_P2P
6607
6608 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6609 {
6610         struct wpa_driver_nl80211_data *drv;
6611         dl_list_for_each(drv, &global->interfaces,
6612                          struct wpa_driver_nl80211_data, list) {
6613                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6614                         return 1;
6615         }
6616         return 0;
6617 }
6618
6619
6620 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6621                                       u8 *new_addr)
6622 {
6623         unsigned int idx;
6624
6625         if (!drv->global)
6626                 return -1;
6627
6628         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6629         for (idx = 0; idx < 64; idx++) {
6630                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6631                 new_addr[0] ^= idx << 2;
6632                 if (!nl80211_addr_in_use(drv->global, new_addr))
6633                         break;
6634         }
6635         if (idx == 64)
6636                 return -1;
6637
6638         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6639                    MACSTR, MAC2STR(new_addr));
6640
6641         return 0;
6642 }
6643
6644 #endif /* CONFIG_P2P */
6645
6646
6647 struct wdev_info {
6648         u64 wdev_id;
6649         int wdev_id_set;
6650         u8 macaddr[ETH_ALEN];
6651 };
6652
6653 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6654 {
6655         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6656         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6657         struct wdev_info *wi = arg;
6658
6659         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6660                   genlmsg_attrlen(gnlh, 0), NULL);
6661         if (tb[NL80211_ATTR_WDEV]) {
6662                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6663                 wi->wdev_id_set = 1;
6664         }
6665
6666         if (tb[NL80211_ATTR_MAC])
6667                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6668                           ETH_ALEN);
6669
6670         return NL_SKIP;
6671 }
6672
6673
6674 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6675                                      const char *ifname, const u8 *addr,
6676                                      void *bss_ctx, void **drv_priv,
6677                                      char *force_ifname, u8 *if_addr,
6678                                      const char *bridge, int use_existing)
6679 {
6680         enum nl80211_iftype nlmode;
6681         struct i802_bss *bss = priv;
6682         struct wpa_driver_nl80211_data *drv = bss->drv;
6683         int ifidx;
6684         int added = 1;
6685
6686         if (addr)
6687                 os_memcpy(if_addr, addr, ETH_ALEN);
6688         nlmode = wpa_driver_nl80211_if_type(type);
6689         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6690                 struct wdev_info p2pdev_info;
6691
6692                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6693                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6694                                              0, nl80211_wdev_handler,
6695                                              &p2pdev_info, use_existing);
6696                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6697                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6698                                    ifname);
6699                         return -1;
6700                 }
6701
6702                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6703                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6704                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6705                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6706                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6707                            ifname,
6708                            (long long unsigned int) p2pdev_info.wdev_id);
6709         } else {
6710                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6711                                              0, NULL, NULL, use_existing);
6712                 if (use_existing && ifidx == -ENFILE) {
6713                         added = 0;
6714                         ifidx = if_nametoindex(ifname);
6715                 } else if (ifidx < 0) {
6716                         return -1;
6717                 }
6718         }
6719
6720         if (!addr) {
6721                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
6722                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6723                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6724                                             bss->ifname, if_addr) < 0) {
6725                         if (added)
6726                                 nl80211_remove_iface(drv, ifidx);
6727                         return -1;
6728                 }
6729         }
6730
6731 #ifdef CONFIG_P2P
6732         if (!addr &&
6733             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6734              type == WPA_IF_P2P_GO)) {
6735                 /* Enforce unique P2P Interface Address */
6736                 u8 new_addr[ETH_ALEN];
6737
6738                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6739                                        new_addr) < 0) {
6740                         if (added)
6741                                 nl80211_remove_iface(drv, ifidx);
6742                         return -1;
6743                 }
6744                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6745                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6746                                    "for P2P group interface");
6747                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6748                                 if (added)
6749                                         nl80211_remove_iface(drv, ifidx);
6750                                 return -1;
6751                         }
6752                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6753                                                new_addr) < 0) {
6754                                 if (added)
6755                                         nl80211_remove_iface(drv, ifidx);
6756                                 return -1;
6757                         }
6758                 }
6759                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6760         }
6761 #endif /* CONFIG_P2P */
6762
6763         if (type == WPA_IF_AP_BSS) {
6764                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6765                 if (new_bss == NULL) {
6766                         if (added)
6767                                 nl80211_remove_iface(drv, ifidx);
6768                         return -1;
6769                 }
6770
6771                 if (bridge &&
6772                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6773                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6774                                    "interface %s to a bridge %s",
6775                                    ifname, bridge);
6776                         if (added)
6777                                 nl80211_remove_iface(drv, ifidx);
6778                         os_free(new_bss);
6779                         return -1;
6780                 }
6781
6782                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6783                 {
6784                         if (added)
6785                                 nl80211_remove_iface(drv, ifidx);
6786                         os_free(new_bss);
6787                         return -1;
6788                 }
6789                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6790                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6791                 new_bss->ifindex = ifidx;
6792                 new_bss->drv = drv;
6793                 new_bss->next = drv->first_bss->next;
6794                 new_bss->freq = drv->first_bss->freq;
6795                 new_bss->ctx = bss_ctx;
6796                 new_bss->added_if = added;
6797                 drv->first_bss->next = new_bss;
6798                 if (drv_priv)
6799                         *drv_priv = new_bss;
6800                 nl80211_init_bss(new_bss);
6801
6802                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6803                 if (nl80211_setup_ap(new_bss))
6804                         return -1;
6805         }
6806
6807         if (drv->global)
6808                 drv->global->if_add_ifindex = ifidx;
6809
6810         /*
6811          * Some virtual interfaces need to process EAPOL packets and events on
6812          * the parent interface. This is used mainly with hostapd.
6813          */
6814         if (ifidx > 0 &&
6815             (drv->hostapd ||
6816              nlmode == NL80211_IFTYPE_AP_VLAN ||
6817              nlmode == NL80211_IFTYPE_WDS ||
6818              nlmode == NL80211_IFTYPE_MONITOR))
6819                 add_ifidx(drv, ifidx);
6820
6821         return 0;
6822 }
6823
6824
6825 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6826                                         enum wpa_driver_if_type type,
6827                                         const char *ifname)
6828 {
6829         struct wpa_driver_nl80211_data *drv = bss->drv;
6830         int ifindex = if_nametoindex(ifname);
6831
6832         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6833                    __func__, type, ifname, ifindex, bss->added_if);
6834         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6835                 nl80211_remove_iface(drv, ifindex);
6836         else if (ifindex > 0 && !bss->added_if) {
6837                 struct wpa_driver_nl80211_data *drv2;
6838                 dl_list_for_each(drv2, &drv->global->interfaces,
6839                                  struct wpa_driver_nl80211_data, list)
6840                         del_ifidx(drv2, ifindex);
6841         }
6842
6843         if (type != WPA_IF_AP_BSS)
6844                 return 0;
6845
6846         if (bss->added_if_into_bridge) {
6847                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6848                                     bss->ifname) < 0)
6849                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6850                                    "interface %s from bridge %s: %s",
6851                                    bss->ifname, bss->brname, strerror(errno));
6852         }
6853         if (bss->added_bridge) {
6854                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6855                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6856                                    "bridge %s: %s",
6857                                    bss->brname, strerror(errno));
6858         }
6859
6860         if (bss != drv->first_bss) {
6861                 struct i802_bss *tbss;
6862
6863                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6864                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6865                         if (tbss->next == bss) {
6866                                 tbss->next = bss->next;
6867                                 /* Unsubscribe management frames */
6868                                 nl80211_teardown_ap(bss);
6869                                 nl80211_destroy_bss(bss);
6870                                 if (!bss->added_if)
6871                                         i802_set_iface_flags(bss, 0);
6872                                 os_free(bss);
6873                                 bss = NULL;
6874                                 break;
6875                         }
6876                 }
6877                 if (bss)
6878                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6879                                    "BSS %p in the list", __func__, bss);
6880         } else {
6881                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6882                 nl80211_teardown_ap(bss);
6883                 if (!bss->added_if && !drv->first_bss->next)
6884                         wpa_driver_nl80211_del_beacon(drv);
6885                 nl80211_destroy_bss(bss);
6886                 if (!bss->added_if)
6887                         i802_set_iface_flags(bss, 0);
6888                 if (drv->first_bss->next) {
6889                         drv->first_bss = drv->first_bss->next;
6890                         drv->ctx = drv->first_bss->ctx;
6891                         os_free(bss);
6892                 } else {
6893                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6894                 }
6895         }
6896
6897         return 0;
6898 }
6899
6900
6901 static int cookie_handler(struct nl_msg *msg, void *arg)
6902 {
6903         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6904         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6905         u64 *cookie = arg;
6906         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6907                   genlmsg_attrlen(gnlh, 0), NULL);
6908         if (tb[NL80211_ATTR_COOKIE])
6909                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6910         return NL_SKIP;
6911 }
6912
6913
6914 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6915                                   unsigned int freq, unsigned int wait,
6916                                   const u8 *buf, size_t buf_len,
6917                                   u64 *cookie_out, int no_cck, int no_ack,
6918                                   int offchanok)
6919 {
6920         struct wpa_driver_nl80211_data *drv = bss->drv;
6921         struct nl_msg *msg;
6922         u64 cookie;
6923         int ret = -1;
6924
6925         msg = nlmsg_alloc();
6926         if (!msg)
6927                 return -1;
6928
6929         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6930                    "no_ack=%d offchanok=%d",
6931                    freq, wait, no_cck, no_ack, offchanok);
6932         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6933
6934         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME) ||
6935             nl80211_set_iface_id(msg, bss) < 0 ||
6936             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6937             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6938             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6939                            drv->test_use_roc_tx) &&
6940              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6941             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6942             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6943             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6944                 goto fail;
6945
6946         cookie = 0;
6947         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6948         msg = NULL;
6949         if (ret) {
6950                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6951                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6952                            freq, wait);
6953         } else {
6954                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6955                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6956                            (long long unsigned int) cookie);
6957
6958                 if (cookie_out)
6959                         *cookie_out = no_ack ? (u64) -1 : cookie;
6960         }
6961
6962 fail:
6963         nlmsg_free(msg);
6964         return ret;
6965 }
6966
6967
6968 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6969                                           unsigned int freq,
6970                                           unsigned int wait_time,
6971                                           const u8 *dst, const u8 *src,
6972                                           const u8 *bssid,
6973                                           const u8 *data, size_t data_len,
6974                                           int no_cck)
6975 {
6976         struct wpa_driver_nl80211_data *drv = bss->drv;
6977         int ret = -1;
6978         u8 *buf;
6979         struct ieee80211_hdr *hdr;
6980
6981         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6982                    "freq=%u MHz wait=%d ms no_cck=%d)",
6983                    drv->ifindex, freq, wait_time, no_cck);
6984
6985         buf = os_zalloc(24 + data_len);
6986         if (buf == NULL)
6987                 return ret;
6988         os_memcpy(buf + 24, data, data_len);
6989         hdr = (struct ieee80211_hdr *) buf;
6990         hdr->frame_control =
6991                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6992         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6993         os_memcpy(hdr->addr2, src, ETH_ALEN);
6994         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6995
6996         if (is_ap_interface(drv->nlmode) &&
6997             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6998              (int) freq == bss->freq || drv->device_ap_sme ||
6999              !drv->use_monitor))
7000                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
7001                                                    0, freq, no_cck, 1,
7002                                                    wait_time);
7003         else
7004                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
7005                                              24 + data_len,
7006                                              &drv->send_action_cookie,
7007                                              no_cck, 0, 1);
7008
7009         os_free(buf);
7010         return ret;
7011 }
7012
7013
7014 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
7015 {
7016         struct i802_bss *bss = priv;
7017         struct wpa_driver_nl80211_data *drv = bss->drv;
7018         struct nl_msg *msg;
7019         int ret;
7020
7021         msg = nlmsg_alloc();
7022         if (!msg)
7023                 return;
7024
7025         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
7026                    (long long unsigned int) drv->send_action_cookie);
7027         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL) ||
7028             nl80211_set_iface_id(msg, bss) < 0 ||
7029             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
7030                 nlmsg_free(msg);
7031                 return;
7032         }
7033
7034         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7035         if (ret)
7036                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
7037                            "(%s)", ret, strerror(-ret));
7038 }
7039
7040
7041 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
7042                                                 unsigned int duration)
7043 {
7044         struct i802_bss *bss = priv;
7045         struct wpa_driver_nl80211_data *drv = bss->drv;
7046         struct nl_msg *msg;
7047         int ret;
7048         u64 cookie;
7049
7050         msg = nlmsg_alloc();
7051         if (!msg)
7052                 return -1;
7053
7054         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL) ||
7055             nl80211_set_iface_id(msg, bss) < 0 ||
7056             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
7057             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
7058                 nlmsg_free(msg);
7059                 return -1;
7060         }
7061
7062         cookie = 0;
7063         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
7064         if (ret == 0) {
7065                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
7066                            "0x%llx for freq=%u MHz duration=%u",
7067                            (long long unsigned int) cookie, freq, duration);
7068                 drv->remain_on_chan_cookie = cookie;
7069                 drv->pending_remain_on_chan = 1;
7070                 return 0;
7071         }
7072         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
7073                    "(freq=%d duration=%u): %d (%s)",
7074                    freq, duration, ret, strerror(-ret));
7075         return -1;
7076 }
7077
7078
7079 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
7080 {
7081         struct i802_bss *bss = priv;
7082         struct wpa_driver_nl80211_data *drv = bss->drv;
7083         struct nl_msg *msg;
7084         int ret;
7085
7086         if (!drv->pending_remain_on_chan) {
7087                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
7088                            "to cancel");
7089                 return -1;
7090         }
7091
7092         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
7093                    "0x%llx",
7094                    (long long unsigned int) drv->remain_on_chan_cookie);
7095
7096         msg = nlmsg_alloc();
7097         if (!msg)
7098                 return -1;
7099
7100         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL) ||
7101             nl80211_set_iface_id(msg, bss) < 0 ||
7102             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
7103                 nlmsg_free(msg);
7104                 return -1;
7105         }
7106
7107         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7108         if (ret == 0)
7109                 return 0;
7110         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
7111                    "%d (%s)", ret, strerror(-ret));
7112         return -1;
7113 }
7114
7115
7116 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
7117 {
7118         struct wpa_driver_nl80211_data *drv = bss->drv;
7119
7120         if (!report) {
7121                 if (bss->nl_preq && drv->device_ap_sme &&
7122                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
7123                     !bss->static_ap) {
7124                         /*
7125                          * Do not disable Probe Request reporting that was
7126                          * enabled in nl80211_setup_ap().
7127                          */
7128                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
7129                                    "Probe Request reporting nl_preq=%p while "
7130                                    "in AP mode", bss->nl_preq);
7131                 } else if (bss->nl_preq) {
7132                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
7133                                    "reporting nl_preq=%p", bss->nl_preq);
7134                         nl80211_destroy_eloop_handle(&bss->nl_preq);
7135                 }
7136                 return 0;
7137         }
7138
7139         if (bss->nl_preq) {
7140                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7141                            "already on! nl_preq=%p", bss->nl_preq);
7142                 return 0;
7143         }
7144
7145         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
7146         if (bss->nl_preq == NULL)
7147                 return -1;
7148         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
7149                    "reporting nl_preq=%p", bss->nl_preq);
7150
7151         if (nl80211_register_frame(bss, bss->nl_preq,
7152                                    (WLAN_FC_TYPE_MGMT << 2) |
7153                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
7154                                    NULL, 0) < 0)
7155                 goto out_err;
7156
7157         nl80211_register_eloop_read(&bss->nl_preq,
7158                                     wpa_driver_nl80211_event_receive,
7159                                     bss->nl_cb);
7160
7161         return 0;
7162
7163  out_err:
7164         nl_destroy_handles(&bss->nl_preq);
7165         return -1;
7166 }
7167
7168
7169 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7170                                      int ifindex, int disabled)
7171 {
7172         struct nl_msg *msg;
7173         struct nlattr *bands, *band;
7174         int ret;
7175
7176         msg = nlmsg_alloc();
7177         if (!msg)
7178                 return -1;
7179
7180         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK) ||
7181             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex))
7182                 goto fail;
7183
7184         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7185         if (!bands)
7186                 goto fail;
7187
7188         /*
7189          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7190          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7191          * rates. All 5 GHz rates are left enabled.
7192          */
7193         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7194         if (!band ||
7195             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
7196                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
7197                 goto fail;
7198         nla_nest_end(msg, band);
7199
7200         nla_nest_end(msg, bands);
7201
7202         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7203         if (ret) {
7204                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7205                            "(%s)", ret, strerror(-ret));
7206         } else
7207                 drv->disabled_11b_rates = disabled;
7208
7209         return ret;
7210
7211 fail:
7212         nlmsg_free(msg);
7213         return -1;
7214 }
7215
7216
7217 static int wpa_driver_nl80211_deinit_ap(void *priv)
7218 {
7219         struct i802_bss *bss = priv;
7220         struct wpa_driver_nl80211_data *drv = bss->drv;
7221         if (!is_ap_interface(drv->nlmode))
7222                 return -1;
7223         wpa_driver_nl80211_del_beacon(drv);
7224         bss->beacon_set = 0;
7225
7226         /*
7227          * If the P2P GO interface was dynamically added, then it is
7228          * possible that the interface change to station is not possible.
7229          */
7230         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
7231                 return 0;
7232
7233         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7234 }
7235
7236
7237 static int wpa_driver_nl80211_stop_ap(void *priv)
7238 {
7239         struct i802_bss *bss = priv;
7240         struct wpa_driver_nl80211_data *drv = bss->drv;
7241         if (!is_ap_interface(drv->nlmode))
7242                 return -1;
7243         wpa_driver_nl80211_del_beacon(drv);
7244         bss->beacon_set = 0;
7245         return 0;
7246 }
7247
7248
7249 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
7250 {
7251         struct i802_bss *bss = priv;
7252         struct wpa_driver_nl80211_data *drv = bss->drv;
7253         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
7254                 return -1;
7255
7256         /*
7257          * If the P2P Client interface was dynamically added, then it is
7258          * possible that the interface change to station is not possible.
7259          */
7260         if (bss->if_dynamic)
7261                 return 0;
7262
7263         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7264 }
7265
7266
7267 static void wpa_driver_nl80211_resume(void *priv)
7268 {
7269         struct i802_bss *bss = priv;
7270
7271         if (i802_set_iface_flags(bss, 1))
7272                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
7273 }
7274
7275
7276 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7277                                   const u8 *ies, size_t ies_len)
7278 {
7279         struct i802_bss *bss = priv;
7280         struct wpa_driver_nl80211_data *drv = bss->drv;
7281         int ret;
7282         u8 *data, *pos;
7283         size_t data_len;
7284         const u8 *own_addr = bss->addr;
7285
7286         if (action != 1) {
7287                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7288                            "action %d", action);
7289                 return -1;
7290         }
7291
7292         /*
7293          * Action frame payload:
7294          * Category[1] = 6 (Fast BSS Transition)
7295          * Action[1] = 1 (Fast BSS Transition Request)
7296          * STA Address
7297          * Target AP Address
7298          * FT IEs
7299          */
7300
7301         data_len = 2 + 2 * ETH_ALEN + ies_len;
7302         data = os_malloc(data_len);
7303         if (data == NULL)
7304                 return -1;
7305         pos = data;
7306         *pos++ = 0x06; /* FT Action category */
7307         *pos++ = action;
7308         os_memcpy(pos, own_addr, ETH_ALEN);
7309         pos += ETH_ALEN;
7310         os_memcpy(pos, target_ap, ETH_ALEN);
7311         pos += ETH_ALEN;
7312         os_memcpy(pos, ies, ies_len);
7313
7314         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7315                                              drv->bssid, own_addr, drv->bssid,
7316                                              data, data_len, 0);
7317         os_free(data);
7318
7319         return ret;
7320 }
7321
7322
7323 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7324 {
7325         struct i802_bss *bss = priv;
7326         struct wpa_driver_nl80211_data *drv = bss->drv;
7327         struct nl_msg *msg;
7328         struct nlattr *cqm;
7329
7330         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7331                    "hysteresis=%d", threshold, hysteresis);
7332
7333         msg = nlmsg_alloc();
7334         if (!msg)
7335                 return -1;
7336
7337         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM) ||
7338             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7339             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
7340             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
7341             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
7342                 nlmsg_free(msg);
7343                 return -1;
7344         }
7345         nla_nest_end(msg, cqm);
7346
7347         return send_and_recv_msgs(drv, msg, NULL, NULL);
7348 }
7349
7350
7351 static int get_channel_width(struct nl_msg *msg, void *arg)
7352 {
7353         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7354         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7355         struct wpa_signal_info *sig_change = arg;
7356
7357         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7358                   genlmsg_attrlen(gnlh, 0), NULL);
7359
7360         sig_change->center_frq1 = -1;
7361         sig_change->center_frq2 = -1;
7362         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
7363
7364         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
7365                 sig_change->chanwidth = convert2width(
7366                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
7367                 if (tb[NL80211_ATTR_CENTER_FREQ1])
7368                         sig_change->center_frq1 =
7369                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
7370                 if (tb[NL80211_ATTR_CENTER_FREQ2])
7371                         sig_change->center_frq2 =
7372                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
7373         }
7374
7375         return NL_SKIP;
7376 }
7377
7378
7379 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
7380                                      struct wpa_signal_info *sig)
7381 {
7382         struct nl_msg *msg;
7383
7384         msg = nlmsg_alloc();
7385         if (!msg)
7386                 return -ENOMEM;
7387
7388         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE) ||
7389             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex)) {
7390                 nlmsg_free(msg);
7391                 return -ENOBUFS;
7392         }
7393
7394         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
7395 }
7396
7397
7398 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7399 {
7400         struct i802_bss *bss = priv;
7401         struct wpa_driver_nl80211_data *drv = bss->drv;
7402         int res;
7403
7404         os_memset(si, 0, sizeof(*si));
7405         res = nl80211_get_link_signal(drv, si);
7406         if (res != 0)
7407                 return res;
7408
7409         res = nl80211_get_channel_width(drv, si);
7410         if (res != 0)
7411                 return res;
7412
7413         return nl80211_get_link_noise(drv, si);
7414 }
7415
7416
7417 static int wpa_driver_nl80211_shared_freq(void *priv)
7418 {
7419         struct i802_bss *bss = priv;
7420         struct wpa_driver_nl80211_data *drv = bss->drv;
7421         struct wpa_driver_nl80211_data *driver;
7422         int freq = 0;
7423
7424         /*
7425          * If the same PHY is in connected state with some other interface,
7426          * then retrieve the assoc freq.
7427          */
7428         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
7429                    drv->phyname);
7430
7431         dl_list_for_each(driver, &drv->global->interfaces,
7432                          struct wpa_driver_nl80211_data, list) {
7433                 if (drv == driver ||
7434                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
7435                     !driver->associated)
7436                         continue;
7437
7438                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
7439                            MACSTR,
7440                            driver->phyname, driver->first_bss->ifname,
7441                            MAC2STR(driver->first_bss->addr));
7442                 if (is_ap_interface(driver->nlmode))
7443                         freq = driver->first_bss->freq;
7444                 else
7445                         freq = nl80211_get_assoc_freq(driver);
7446                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
7447                            drv->phyname, freq);
7448         }
7449
7450         if (!freq)
7451                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
7452                            "PHY (%s) in associated state", drv->phyname);
7453
7454         return freq;
7455 }
7456
7457
7458 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7459                               int encrypt)
7460 {
7461         struct i802_bss *bss = priv;
7462         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
7463                                              0, 0, 0, 0);
7464 }
7465
7466
7467 static int nl80211_set_param(void *priv, const char *param)
7468 {
7469         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7470         if (param == NULL)
7471                 return 0;
7472
7473 #ifdef CONFIG_P2P
7474         if (os_strstr(param, "use_p2p_group_interface=1")) {
7475                 struct i802_bss *bss = priv;
7476                 struct wpa_driver_nl80211_data *drv = bss->drv;
7477
7478                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7479                            "interface");
7480                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7481                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7482         }
7483 #endif /* CONFIG_P2P */
7484
7485         if (os_strstr(param, "use_monitor=1")) {
7486                 struct i802_bss *bss = priv;
7487                 struct wpa_driver_nl80211_data *drv = bss->drv;
7488                 drv->use_monitor = 1;
7489         }
7490
7491         if (os_strstr(param, "force_connect_cmd=1")) {
7492                 struct i802_bss *bss = priv;
7493                 struct wpa_driver_nl80211_data *drv = bss->drv;
7494                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
7495                 drv->force_connect_cmd = 1;
7496         }
7497
7498         if (os_strstr(param, "no_offchannel_tx=1")) {
7499                 struct i802_bss *bss = priv;
7500                 struct wpa_driver_nl80211_data *drv = bss->drv;
7501                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
7502                 drv->test_use_roc_tx = 1;
7503         }
7504
7505         return 0;
7506 }
7507
7508
7509 static void * nl80211_global_init(void)
7510 {
7511         struct nl80211_global *global;
7512         struct netlink_config *cfg;
7513
7514         global = os_zalloc(sizeof(*global));
7515         if (global == NULL)
7516                 return NULL;
7517         global->ioctl_sock = -1;
7518         dl_list_init(&global->interfaces);
7519         global->if_add_ifindex = -1;
7520
7521         cfg = os_zalloc(sizeof(*cfg));
7522         if (cfg == NULL)
7523                 goto err;
7524
7525         cfg->ctx = global;
7526         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7527         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7528         global->netlink = netlink_init(cfg);
7529         if (global->netlink == NULL) {
7530                 os_free(cfg);
7531                 goto err;
7532         }
7533
7534         if (wpa_driver_nl80211_init_nl_global(global) < 0)
7535                 goto err;
7536
7537         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7538         if (global->ioctl_sock < 0) {
7539                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7540                            strerror(errno));
7541                 goto err;
7542         }
7543
7544         return global;
7545
7546 err:
7547         nl80211_global_deinit(global);
7548         return NULL;
7549 }
7550
7551
7552 static void nl80211_global_deinit(void *priv)
7553 {
7554         struct nl80211_global *global = priv;
7555         if (global == NULL)
7556                 return;
7557         if (!dl_list_empty(&global->interfaces)) {
7558                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7559                            "nl80211_global_deinit",
7560                            dl_list_len(&global->interfaces));
7561         }
7562
7563         if (global->netlink)
7564                 netlink_deinit(global->netlink);
7565
7566         nl_destroy_handles(&global->nl);
7567
7568         if (global->nl_event)
7569                 nl80211_destroy_eloop_handle(&global->nl_event);
7570
7571         nl_cb_put(global->nl_cb);
7572
7573         if (global->ioctl_sock >= 0)
7574                 close(global->ioctl_sock);
7575
7576         os_free(global);
7577 }
7578
7579
7580 static const char * nl80211_get_radio_name(void *priv)
7581 {
7582         struct i802_bss *bss = priv;
7583         struct wpa_driver_nl80211_data *drv = bss->drv;
7584         return drv->phyname;
7585 }
7586
7587
7588 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7589                          const u8 *pmkid)
7590 {
7591         struct nl_msg *msg;
7592
7593         msg = nlmsg_alloc();
7594         if (!msg)
7595                 return -ENOMEM;
7596
7597         if (!nl80211_cmd(bss->drv, msg, 0, cmd) ||
7598             nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7599                         if_nametoindex(bss->ifname)) ||
7600             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
7601             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
7602                 nlmsg_free(msg);
7603                 return -ENOBUFS;
7604         }
7605
7606         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7607 }
7608
7609
7610 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7611 {
7612         struct i802_bss *bss = priv;
7613         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7614         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7615 }
7616
7617
7618 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7619 {
7620         struct i802_bss *bss = priv;
7621         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7622                    MAC2STR(bssid));
7623         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7624 }
7625
7626
7627 static int nl80211_flush_pmkid(void *priv)
7628 {
7629         struct i802_bss *bss = priv;
7630         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7631         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7632 }
7633
7634
7635 static void clean_survey_results(struct survey_results *survey_results)
7636 {
7637         struct freq_survey *survey, *tmp;
7638
7639         if (dl_list_empty(&survey_results->survey_list))
7640                 return;
7641
7642         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7643                               struct freq_survey, list) {
7644                 dl_list_del(&survey->list);
7645                 os_free(survey);
7646         }
7647 }
7648
7649
7650 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7651                        struct dl_list *survey_list)
7652 {
7653         struct freq_survey *survey;
7654
7655         survey = os_zalloc(sizeof(struct freq_survey));
7656         if  (!survey)
7657                 return;
7658
7659         survey->ifidx = ifidx;
7660         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7661         survey->filled = 0;
7662
7663         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7664                 survey->nf = (int8_t)
7665                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7666                 survey->filled |= SURVEY_HAS_NF;
7667         }
7668
7669         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7670                 survey->channel_time =
7671                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7672                 survey->filled |= SURVEY_HAS_CHAN_TIME;
7673         }
7674
7675         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7676                 survey->channel_time_busy =
7677                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7678                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7679         }
7680
7681         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7682                 survey->channel_time_rx =
7683                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7684                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7685         }
7686
7687         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7688                 survey->channel_time_tx =
7689                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7690                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7691         }
7692
7693         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)",
7694                    survey->freq,
7695                    survey->nf,
7696                    (unsigned long int) survey->channel_time,
7697                    (unsigned long int) survey->channel_time_busy,
7698                    (unsigned long int) survey->channel_time_tx,
7699                    (unsigned long int) survey->channel_time_rx,
7700                    survey->filled);
7701
7702         dl_list_add_tail(survey_list, &survey->list);
7703 }
7704
7705
7706 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7707                            unsigned int freq_filter)
7708 {
7709         if (!freq_filter)
7710                 return 1;
7711
7712         return freq_filter == surveyed_freq;
7713 }
7714
7715
7716 static int survey_handler(struct nl_msg *msg, void *arg)
7717 {
7718         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7719         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7720         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7721         struct survey_results *survey_results;
7722         u32 surveyed_freq = 0;
7723         u32 ifidx;
7724
7725         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7726                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7727                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7728         };
7729
7730         survey_results = (struct survey_results *) arg;
7731
7732         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7733                   genlmsg_attrlen(gnlh, 0), NULL);
7734
7735         if (!tb[NL80211_ATTR_IFINDEX])
7736                 return NL_SKIP;
7737
7738         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7739
7740         if (!tb[NL80211_ATTR_SURVEY_INFO])
7741                 return NL_SKIP;
7742
7743         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7744                              tb[NL80211_ATTR_SURVEY_INFO],
7745                              survey_policy))
7746                 return NL_SKIP;
7747
7748         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7749                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7750                 return NL_SKIP;
7751         }
7752
7753         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7754
7755         if (!check_survey_ok(sinfo, surveyed_freq,
7756                              survey_results->freq_filter))
7757                 return NL_SKIP;
7758
7759         if (survey_results->freq_filter &&
7760             survey_results->freq_filter != surveyed_freq) {
7761                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7762                            surveyed_freq);
7763                 return NL_SKIP;
7764         }
7765
7766         add_survey(sinfo, ifidx, &survey_results->survey_list);
7767
7768         return NL_SKIP;
7769 }
7770
7771
7772 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7773 {
7774         struct i802_bss *bss = priv;
7775         struct wpa_driver_nl80211_data *drv = bss->drv;
7776         struct nl_msg *msg;
7777         int err = -ENOBUFS;
7778         union wpa_event_data data;
7779         struct survey_results *survey_results;
7780
7781         os_memset(&data, 0, sizeof(data));
7782         survey_results = &data.survey_results;
7783
7784         dl_list_init(&survey_results->survey_list);
7785
7786         msg = nlmsg_alloc();
7787         if (!msg)
7788                 return -ENOBUFS;
7789
7790         if (!nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY) ||
7791             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex)) {
7792                 nlmsg_free(msg);
7793                 return -ENOBUFS;
7794         }
7795
7796         if (freq)
7797                 data.survey_results.freq_filter = freq;
7798
7799         do {
7800                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7801                 err = send_and_recv_msgs(drv, msg, survey_handler,
7802                                          survey_results);
7803         } while (err > 0);
7804
7805         if (err)
7806                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7807         else
7808                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7809
7810         clean_survey_results(survey_results);
7811         return err;
7812 }
7813
7814
7815 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7816                                    const u8 *replay_ctr)
7817 {
7818         struct i802_bss *bss = priv;
7819         struct wpa_driver_nl80211_data *drv = bss->drv;
7820         struct nlattr *replay_nested;
7821         struct nl_msg *msg;
7822
7823         msg = nlmsg_alloc();
7824         if (!msg)
7825                 return;
7826
7827         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD) ||
7828             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7829             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
7830             nla_put(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek) ||
7831             nla_put(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck) ||
7832             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7833                     replay_ctr)) {
7834                 nlmsg_free(msg);
7835                 return;
7836         }
7837
7838         nla_nest_end(msg, replay_nested);
7839
7840         send_and_recv_msgs(drv, msg, NULL, NULL);
7841 }
7842
7843
7844 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7845                                     const u8 *addr, int qos)
7846 {
7847         /* send data frame to poll STA and check whether
7848          * this frame is ACKed */
7849         struct {
7850                 struct ieee80211_hdr hdr;
7851                 u16 qos_ctl;
7852         } STRUCT_PACKED nulldata;
7853         size_t size;
7854
7855         /* Send data frame to poll STA and check whether this frame is ACKed */
7856
7857         os_memset(&nulldata, 0, sizeof(nulldata));
7858
7859         if (qos) {
7860                 nulldata.hdr.frame_control =
7861                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7862                                      WLAN_FC_STYPE_QOS_NULL);
7863                 size = sizeof(nulldata);
7864         } else {
7865                 nulldata.hdr.frame_control =
7866                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7867                                      WLAN_FC_STYPE_NULLFUNC);
7868                 size = sizeof(struct ieee80211_hdr);
7869         }
7870
7871         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7872         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7873         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7874         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7875
7876         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7877                                          0, 0) < 0)
7878                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7879                            "send poll frame");
7880 }
7881
7882 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7883                                 int qos)
7884 {
7885         struct i802_bss *bss = priv;
7886         struct wpa_driver_nl80211_data *drv = bss->drv;
7887         struct nl_msg *msg;
7888
7889         if (!drv->poll_command_supported) {
7890                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7891                 return;
7892         }
7893
7894         msg = nlmsg_alloc();
7895         if (!msg)
7896                 return;
7897
7898         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT) ||
7899             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7900             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7901                 nlmsg_free(msg);
7902                 return;
7903         }
7904
7905         send_and_recv_msgs(drv, msg, NULL, NULL);
7906 }
7907
7908
7909 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7910 {
7911         struct nl_msg *msg;
7912
7913         msg = nlmsg_alloc();
7914         if (!msg)
7915                 return -ENOMEM;
7916
7917         if (!nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE) ||
7918             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
7919             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7920                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7921                 nlmsg_free(msg);
7922                 return -ENOBUFS;
7923         }
7924         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7925 }
7926
7927
7928 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7929                                      int ctwindow)
7930 {
7931         struct i802_bss *bss = priv;
7932
7933         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7934                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7935
7936         if (opp_ps != -1 || ctwindow != -1) {
7937 #ifdef ANDROID_P2P
7938                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7939 #else /* ANDROID_P2P */
7940                 return -1; /* Not yet supported */
7941 #endif /* ANDROID_P2P */
7942         }
7943
7944         if (legacy_ps == -1)
7945                 return 0;
7946         if (legacy_ps != 0 && legacy_ps != 1)
7947                 return -1; /* Not yet supported */
7948
7949         return nl80211_set_power_save(bss, legacy_ps);
7950 }
7951
7952
7953 static int nl80211_start_radar_detection(void *priv,
7954                                          struct hostapd_freq_params *freq)
7955 {
7956         struct i802_bss *bss = priv;
7957         struct wpa_driver_nl80211_data *drv = bss->drv;
7958         struct nl_msg *msg;
7959         int ret;
7960
7961         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)",
7962                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7963                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7964
7965         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7966                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7967                            "detection");
7968                 return -1;
7969         }
7970
7971         msg = nlmsg_alloc();
7972         if (!msg)
7973                 return -1;
7974
7975         if (!nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT) ||
7976             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
7977             nl80211_put_freq_params(msg, freq) < 0) {
7978                 nlmsg_free(msg);
7979                 return -1;
7980         }
7981
7982         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7983         if (ret == 0)
7984                 return 0;
7985         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7986                    "%d (%s)", ret, strerror(-ret));
7987         return -1;
7988 }
7989
7990 #ifdef CONFIG_TDLS
7991
7992 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7993                                   u8 dialog_token, u16 status_code,
7994                                   u32 peer_capab, int initiator, const u8 *buf,
7995                                   size_t len)
7996 {
7997         struct i802_bss *bss = priv;
7998         struct wpa_driver_nl80211_data *drv = bss->drv;
7999         struct nl_msg *msg;
8000
8001         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8002                 return -EOPNOTSUPP;
8003
8004         if (!dst)
8005                 return -EINVAL;
8006
8007         msg = nlmsg_alloc();
8008         if (!msg)
8009                 return -ENOMEM;
8010
8011         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT) ||
8012             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8013             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
8014             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
8015             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
8016             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
8017                 goto fail;
8018         if (peer_capab) {
8019                 /*
8020                  * The internal enum tdls_peer_capability definition is
8021                  * currently identical with the nl80211 enum
8022                  * nl80211_tdls_peer_capability, so no conversion is needed
8023                  * here.
8024                  */
8025                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
8026                                 peer_capab))
8027                         goto fail;
8028         }
8029         if ((initiator &&
8030              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
8031             nla_put(msg, NL80211_ATTR_IE, len, buf))
8032                 goto fail;
8033
8034         return send_and_recv_msgs(drv, msg, NULL, NULL);
8035
8036 fail:
8037         nlmsg_free(msg);
8038         return -ENOBUFS;
8039 }
8040
8041
8042 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
8043 {
8044         struct i802_bss *bss = priv;
8045         struct wpa_driver_nl80211_data *drv = bss->drv;
8046         struct nl_msg *msg;
8047         enum nl80211_tdls_operation nl80211_oper;
8048
8049         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8050                 return -EOPNOTSUPP;
8051
8052         switch (oper) {
8053         case TDLS_DISCOVERY_REQ:
8054                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
8055                 break;
8056         case TDLS_SETUP:
8057                 nl80211_oper = NL80211_TDLS_SETUP;
8058                 break;
8059         case TDLS_TEARDOWN:
8060                 nl80211_oper = NL80211_TDLS_TEARDOWN;
8061                 break;
8062         case TDLS_ENABLE_LINK:
8063                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8064                 break;
8065         case TDLS_DISABLE_LINK:
8066                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8067                 break;
8068         case TDLS_ENABLE:
8069                 return 0;
8070         case TDLS_DISABLE:
8071                 return 0;
8072         default:
8073                 return -EINVAL;
8074         }
8075
8076         msg = nlmsg_alloc();
8077         if (!msg)
8078                 return -ENOMEM;
8079
8080         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER) ||
8081             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
8082             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8083             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
8084                 nlmsg_free(msg);
8085                 return -ENOBUFS;
8086         }
8087
8088         return send_and_recv_msgs(drv, msg, NULL, NULL);
8089 }
8090
8091 #endif /* CONFIG TDLS */
8092
8093
8094 static int driver_nl80211_set_key(const char *ifname, void *priv,
8095                                   enum wpa_alg alg, const u8 *addr,
8096                                   int key_idx, int set_tx,
8097                                   const u8 *seq, size_t seq_len,
8098                                   const u8 *key, size_t key_len)
8099 {
8100         struct i802_bss *bss = priv;
8101         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
8102                                           set_tx, seq, seq_len, key, key_len);
8103 }
8104
8105
8106 static int driver_nl80211_scan2(void *priv,
8107                                 struct wpa_driver_scan_params *params)
8108 {
8109         struct i802_bss *bss = priv;
8110         return wpa_driver_nl80211_scan(bss, params);
8111 }
8112
8113
8114 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
8115                                          int reason_code)
8116 {
8117         struct i802_bss *bss = priv;
8118         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
8119 }
8120
8121
8122 static int driver_nl80211_authenticate(void *priv,
8123                                        struct wpa_driver_auth_params *params)
8124 {
8125         struct i802_bss *bss = priv;
8126         return wpa_driver_nl80211_authenticate(bss, params);
8127 }
8128
8129
8130 static void driver_nl80211_deinit(void *priv)
8131 {
8132         struct i802_bss *bss = priv;
8133         wpa_driver_nl80211_deinit(bss);
8134 }
8135
8136
8137 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
8138                                     const char *ifname)
8139 {
8140         struct i802_bss *bss = priv;
8141         return wpa_driver_nl80211_if_remove(bss, type, ifname);
8142 }
8143
8144
8145 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
8146                                     size_t data_len, int noack)
8147 {
8148         struct i802_bss *bss = priv;
8149         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
8150                                             0, 0, 0, 0);
8151 }
8152
8153
8154 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
8155 {
8156         struct i802_bss *bss = priv;
8157         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
8158 }
8159
8160
8161 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
8162                                        const char *ifname, int vlan_id)
8163 {
8164         struct i802_bss *bss = priv;
8165         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
8166 }
8167
8168
8169 static int driver_nl80211_read_sta_data(void *priv,
8170                                         struct hostap_sta_driver_data *data,
8171                                         const u8 *addr)
8172 {
8173         struct i802_bss *bss = priv;
8174         return i802_read_sta_data(bss, data, addr);
8175 }
8176
8177
8178 static int driver_nl80211_send_action(void *priv, unsigned int freq,
8179                                       unsigned int wait_time,
8180                                       const u8 *dst, const u8 *src,
8181                                       const u8 *bssid,
8182                                       const u8 *data, size_t data_len,
8183                                       int no_cck)
8184 {
8185         struct i802_bss *bss = priv;
8186         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
8187                                               bssid, data, data_len, no_cck);
8188 }
8189
8190
8191 static int driver_nl80211_probe_req_report(void *priv, int report)
8192 {
8193         struct i802_bss *bss = priv;
8194         return wpa_driver_nl80211_probe_req_report(bss, report);
8195 }
8196
8197
8198 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
8199                                             const u8 *ies, size_t ies_len)
8200 {
8201         int ret;
8202         struct nl_msg *msg;
8203         struct i802_bss *bss = priv;
8204         struct wpa_driver_nl80211_data *drv = bss->drv;
8205         u16 mdid = WPA_GET_LE16(md);
8206
8207         msg = nlmsg_alloc();
8208         if (!msg)
8209                 return -ENOMEM;
8210
8211         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
8212         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES) ||
8213             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8214             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
8215             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
8216                 nlmsg_free(msg);
8217                 return -ENOBUFS;
8218         }
8219
8220         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8221         if (ret) {
8222                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
8223                            "err=%d (%s)", ret, strerror(-ret));
8224         }
8225
8226         return ret;
8227 }
8228
8229
8230 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
8231 {
8232         struct i802_bss *bss = priv;
8233         struct wpa_driver_nl80211_data *drv = bss->drv;
8234
8235         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
8236                 return NULL;
8237
8238         return bss->addr;
8239 }
8240
8241
8242 static const char * scan_state_str(enum scan_states scan_state)
8243 {
8244         switch (scan_state) {
8245         case NO_SCAN:
8246                 return "NO_SCAN";
8247         case SCAN_REQUESTED:
8248                 return "SCAN_REQUESTED";
8249         case SCAN_STARTED:
8250                 return "SCAN_STARTED";
8251         case SCAN_COMPLETED:
8252                 return "SCAN_COMPLETED";
8253         case SCAN_ABORTED:
8254                 return "SCAN_ABORTED";
8255         case SCHED_SCAN_STARTED:
8256                 return "SCHED_SCAN_STARTED";
8257         case SCHED_SCAN_STOPPED:
8258                 return "SCHED_SCAN_STOPPED";
8259         case SCHED_SCAN_RESULTS:
8260                 return "SCHED_SCAN_RESULTS";
8261         }
8262
8263         return "??";
8264 }
8265
8266
8267 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
8268 {
8269         struct i802_bss *bss = priv;
8270         struct wpa_driver_nl80211_data *drv = bss->drv;
8271         int res;
8272         char *pos, *end;
8273
8274         pos = buf;
8275         end = buf + buflen;
8276
8277         res = os_snprintf(pos, end - pos,
8278                           "ifindex=%d\n"
8279                           "ifname=%s\n"
8280                           "brname=%s\n"
8281                           "addr=" MACSTR "\n"
8282                           "freq=%d\n"
8283                           "%s%s%s%s%s",
8284                           bss->ifindex,
8285                           bss->ifname,
8286                           bss->brname,
8287                           MAC2STR(bss->addr),
8288                           bss->freq,
8289                           bss->beacon_set ? "beacon_set=1\n" : "",
8290                           bss->added_if_into_bridge ?
8291                           "added_if_into_bridge=1\n" : "",
8292                           bss->added_bridge ? "added_bridge=1\n" : "",
8293                           bss->in_deinit ? "in_deinit=1\n" : "",
8294                           bss->if_dynamic ? "if_dynamic=1\n" : "");
8295         if (res < 0 || res >= end - pos)
8296                 return pos - buf;
8297         pos += res;
8298
8299         if (bss->wdev_id_set) {
8300                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
8301                                   (unsigned long long) bss->wdev_id);
8302                 if (res < 0 || res >= end - pos)
8303                         return pos - buf;
8304                 pos += res;
8305         }
8306
8307         res = os_snprintf(pos, end - pos,
8308                           "phyname=%s\n"
8309                           "perm_addr=" MACSTR "\n"
8310                           "drv_ifindex=%d\n"
8311                           "operstate=%d\n"
8312                           "scan_state=%s\n"
8313                           "auth_bssid=" MACSTR "\n"
8314                           "auth_attempt_bssid=" MACSTR "\n"
8315                           "bssid=" MACSTR "\n"
8316                           "prev_bssid=" MACSTR "\n"
8317                           "associated=%d\n"
8318                           "assoc_freq=%u\n"
8319                           "monitor_sock=%d\n"
8320                           "monitor_ifidx=%d\n"
8321                           "monitor_refcount=%d\n"
8322                           "last_mgmt_freq=%u\n"
8323                           "eapol_tx_sock=%d\n"
8324                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
8325                           drv->phyname,
8326                           MAC2STR(drv->perm_addr),
8327                           drv->ifindex,
8328                           drv->operstate,
8329                           scan_state_str(drv->scan_state),
8330                           MAC2STR(drv->auth_bssid),
8331                           MAC2STR(drv->auth_attempt_bssid),
8332                           MAC2STR(drv->bssid),
8333                           MAC2STR(drv->prev_bssid),
8334                           drv->associated,
8335                           drv->assoc_freq,
8336                           drv->monitor_sock,
8337                           drv->monitor_ifidx,
8338                           drv->monitor_refcount,
8339                           drv->last_mgmt_freq,
8340                           drv->eapol_tx_sock,
8341                           drv->ignore_if_down_event ?
8342                           "ignore_if_down_event=1\n" : "",
8343                           drv->scan_complete_events ?
8344                           "scan_complete_events=1\n" : "",
8345                           drv->disabled_11b_rates ?
8346                           "disabled_11b_rates=1\n" : "",
8347                           drv->pending_remain_on_chan ?
8348                           "pending_remain_on_chan=1\n" : "",
8349                           drv->in_interface_list ? "in_interface_list=1\n" : "",
8350                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
8351                           drv->poll_command_supported ?
8352                           "poll_command_supported=1\n" : "",
8353                           drv->data_tx_status ? "data_tx_status=1\n" : "",
8354                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
8355                           drv->retry_auth ? "retry_auth=1\n" : "",
8356                           drv->use_monitor ? "use_monitor=1\n" : "",
8357                           drv->ignore_next_local_disconnect ?
8358                           "ignore_next_local_disconnect=1\n" : "",
8359                           drv->ignore_next_local_deauth ?
8360                           "ignore_next_local_deauth=1\n" : "");
8361         if (res < 0 || res >= end - pos)
8362                 return pos - buf;
8363         pos += res;
8364
8365         if (drv->has_capability) {
8366                 res = os_snprintf(pos, end - pos,
8367                                   "capa.key_mgmt=0x%x\n"
8368                                   "capa.enc=0x%x\n"
8369                                   "capa.auth=0x%x\n"
8370                                   "capa.flags=0x%llx\n"
8371                                   "capa.max_scan_ssids=%d\n"
8372                                   "capa.max_sched_scan_ssids=%d\n"
8373                                   "capa.sched_scan_supported=%d\n"
8374                                   "capa.max_match_sets=%d\n"
8375                                   "capa.max_remain_on_chan=%u\n"
8376                                   "capa.max_stations=%u\n"
8377                                   "capa.probe_resp_offloads=0x%x\n"
8378                                   "capa.max_acl_mac_addrs=%u\n"
8379                                   "capa.num_multichan_concurrent=%u\n",
8380                                   drv->capa.key_mgmt,
8381                                   drv->capa.enc,
8382                                   drv->capa.auth,
8383                                   (unsigned long long) drv->capa.flags,
8384                                   drv->capa.max_scan_ssids,
8385                                   drv->capa.max_sched_scan_ssids,
8386                                   drv->capa.sched_scan_supported,
8387                                   drv->capa.max_match_sets,
8388                                   drv->capa.max_remain_on_chan,
8389                                   drv->capa.max_stations,
8390                                   drv->capa.probe_resp_offloads,
8391                                   drv->capa.max_acl_mac_addrs,
8392                                   drv->capa.num_multichan_concurrent);
8393                 if (res < 0 || res >= end - pos)
8394                         return pos - buf;
8395                 pos += res;
8396         }
8397
8398         return pos - buf;
8399 }
8400
8401
8402 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
8403 {
8404         if ((settings->head &&
8405              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
8406                      settings->head_len, settings->head)) ||
8407             (settings->tail &&
8408              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
8409                      settings->tail_len, settings->tail)) ||
8410             (settings->beacon_ies &&
8411              nla_put(msg, NL80211_ATTR_IE,
8412                      settings->beacon_ies_len, settings->beacon_ies)) ||
8413             (settings->proberesp_ies &&
8414              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
8415                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
8416             (settings->assocresp_ies &&
8417              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
8418                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
8419             (settings->probe_resp &&
8420              nla_put(msg, NL80211_ATTR_PROBE_RESP,
8421                      settings->probe_resp_len, settings->probe_resp)))
8422                 return -ENOBUFS;
8423
8424         return 0;
8425 }
8426
8427
8428 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
8429 {
8430         struct nl_msg *msg;
8431         struct i802_bss *bss = priv;
8432         struct wpa_driver_nl80211_data *drv = bss->drv;
8433         struct nlattr *beacon_csa;
8434         int ret = -ENOBUFS;
8435
8436         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
8437                    settings->cs_count, settings->block_tx,
8438                    settings->freq_params.freq, settings->freq_params.bandwidth,
8439                    settings->freq_params.center_freq1,
8440                    settings->freq_params.center_freq2);
8441
8442         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8443                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
8444                 return -EOPNOTSUPP;
8445         }
8446
8447         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
8448             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
8449                 return -EOPNOTSUPP;
8450
8451         /* check settings validity */
8452         if (!settings->beacon_csa.tail ||
8453             ((settings->beacon_csa.tail_len <=
8454               settings->counter_offset_beacon) ||
8455              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
8456               settings->cs_count)))
8457                 return -EINVAL;
8458
8459         if (settings->beacon_csa.probe_resp &&
8460             ((settings->beacon_csa.probe_resp_len <=
8461               settings->counter_offset_presp) ||
8462              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
8463               settings->cs_count)))
8464                 return -EINVAL;
8465
8466         msg = nlmsg_alloc();
8467         if (!msg)
8468                 return -ENOMEM;
8469
8470         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH) ||
8471             nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex) ||
8472             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
8473                         settings->cs_count) ||
8474             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
8475             (settings->block_tx &&
8476              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
8477                 goto error;
8478
8479         /* beacon_after params */
8480         ret = set_beacon_data(msg, &settings->beacon_after);
8481         if (ret)
8482                 goto error;
8483
8484         /* beacon_csa params */
8485         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8486         if (!beacon_csa)
8487                 goto fail;
8488
8489         ret = set_beacon_data(msg, &settings->beacon_csa);
8490         if (ret)
8491                 goto error;
8492
8493         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8494                         settings->counter_offset_beacon) ||
8495             (settings->beacon_csa.probe_resp &&
8496              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8497                          settings->counter_offset_presp)))
8498                 goto fail;
8499
8500         nla_nest_end(msg, beacon_csa);
8501         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8502         if (ret) {
8503                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8504                            ret, strerror(-ret));
8505         }
8506         return ret;
8507
8508 fail:
8509         ret = -ENOBUFS;
8510 error:
8511         nlmsg_free(msg);
8512         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8513         return ret;
8514 }
8515
8516
8517 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8518                           u8 user_priority, u16 admitted_time)
8519 {
8520         struct i802_bss *bss = priv;
8521         struct wpa_driver_nl80211_data *drv = bss->drv;
8522         struct nl_msg *msg;
8523         int ret;
8524
8525         wpa_printf(MSG_DEBUG,
8526                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8527                    tsid, admitted_time, user_priority);
8528
8529         if (!is_sta_interface(drv->nlmode))
8530                 return -ENOTSUP;
8531
8532         msg = nlmsg_alloc();
8533         if (!msg)
8534                 return -ENOMEM;
8535
8536         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_ADD_TX_TS) ||
8537             nl80211_set_iface_id(msg, bss) < 0 ||
8538             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8539             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8540             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
8541             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
8542                 nlmsg_free(msg);
8543                 return -ENOBUFS;
8544         }
8545
8546         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8547         if (ret)
8548                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8549                            ret, strerror(-ret));
8550         return ret;
8551 }
8552
8553
8554 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8555 {
8556         struct i802_bss *bss = priv;
8557         struct wpa_driver_nl80211_data *drv = bss->drv;
8558         struct nl_msg *msg;
8559         int ret;
8560
8561         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8562
8563         if (!is_sta_interface(drv->nlmode))
8564                 return -ENOTSUP;
8565
8566         msg = nlmsg_alloc();
8567         if (!msg)
8568                 return -ENOMEM;
8569
8570         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_TX_TS) ||
8571             nl80211_set_iface_id(msg, bss) < 0 ||
8572             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8573             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
8574                 nlmsg_free(msg);
8575                 return -ENOBUFS;
8576         }
8577
8578         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8579         if (ret)
8580                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8581                            ret, strerror(-ret));
8582         return ret;
8583 }
8584
8585
8586 #ifdef CONFIG_TESTING_OPTIONS
8587 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8588 {
8589         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8590         struct wpabuf *buf = arg;
8591
8592         if (!buf)
8593                 return NL_SKIP;
8594
8595         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8596                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8597                 return NL_SKIP;
8598         }
8599
8600         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8601                         genlmsg_attrlen(gnlh, 0));
8602
8603         return NL_SKIP;
8604 }
8605 #endif /* CONFIG_TESTING_OPTIONS */
8606
8607
8608 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8609 {
8610         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8611         struct nlattr *nl_vendor_reply, *nl;
8612         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8613         struct wpabuf *buf = arg;
8614         int rem;
8615
8616         if (!buf)
8617                 return NL_SKIP;
8618
8619         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8620                   genlmsg_attrlen(gnlh, 0), NULL);
8621         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8622
8623         if (!nl_vendor_reply)
8624                 return NL_SKIP;
8625
8626         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8627                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8628                 return NL_SKIP;
8629         }
8630
8631         nla_for_each_nested(nl, nl_vendor_reply, rem) {
8632                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8633         }
8634
8635         return NL_SKIP;
8636 }
8637
8638
8639 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8640                               unsigned int subcmd, const u8 *data,
8641                               size_t data_len, struct wpabuf *buf)
8642 {
8643         struct i802_bss *bss = priv;
8644         struct wpa_driver_nl80211_data *drv = bss->drv;
8645         struct nl_msg *msg;
8646         int ret;
8647
8648         msg = nlmsg_alloc();
8649         if (!msg)
8650                 return -ENOMEM;
8651
8652 #ifdef CONFIG_TESTING_OPTIONS
8653         if (vendor_id == 0xffffffff) {
8654                 nl80211_cmd(drv, msg, 0, subcmd);
8655                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8656                     0)
8657                         goto fail;
8658                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8659                 if (ret)
8660                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8661                                    ret);
8662                 return ret;
8663         }
8664 #endif /* CONFIG_TESTING_OPTIONS */
8665
8666         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR) ||
8667             nl80211_set_iface_id(msg, bss) < 0 ||
8668             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
8669             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
8670             (data &&
8671              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
8672                 goto fail;
8673
8674         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8675         if (ret)
8676                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8677                            ret);
8678         return ret;
8679
8680 fail:
8681         nlmsg_free(msg);
8682         return -ENOBUFS;
8683 }
8684
8685
8686 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8687                                u8 qos_map_set_len)
8688 {
8689         struct i802_bss *bss = priv;
8690         struct wpa_driver_nl80211_data *drv = bss->drv;
8691         struct nl_msg *msg;
8692         int ret;
8693
8694         msg = nlmsg_alloc();
8695         if (!msg)
8696                 return -ENOMEM;
8697
8698         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8699                     qos_map_set, qos_map_set_len);
8700
8701         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_QOS_MAP) ||
8702             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8703             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
8704                 nlmsg_free(msg);
8705                 return -ENOBUFS;
8706         }
8707
8708         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8709         if (ret)
8710                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8711
8712         return ret;
8713 }
8714
8715
8716 static int nl80211_set_wowlan(void *priv,
8717                               const struct wowlan_triggers *triggers)
8718 {
8719         struct i802_bss *bss = priv;
8720         struct wpa_driver_nl80211_data *drv = bss->drv;
8721         struct nl_msg *msg;
8722         struct nlattr *wowlan_triggers;
8723         int ret;
8724
8725         msg = nlmsg_alloc();
8726         if (!msg)
8727                 return -ENOMEM;
8728
8729         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8730
8731         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WOWLAN) ||
8732             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8733             !(wowlan_triggers = nla_nest_start(msg,
8734                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
8735             (triggers->any &&
8736              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8737             (triggers->disconnect &&
8738              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8739             (triggers->magic_pkt &&
8740              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8741             (triggers->gtk_rekey_failure &&
8742              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8743             (triggers->eap_identity_req &&
8744              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8745             (triggers->four_way_handshake &&
8746              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8747             (triggers->rfkill_release &&
8748              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
8749                 nlmsg_free(msg);
8750                 return -ENOBUFS;
8751         }
8752
8753         nla_nest_end(msg, wowlan_triggers);
8754
8755         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8756         if (ret)
8757                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8758
8759         return ret;
8760 }
8761
8762
8763 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8764 {
8765         struct i802_bss *bss = priv;
8766         struct wpa_driver_nl80211_data *drv = bss->drv;
8767         struct nl_msg *msg;
8768         struct nlattr *params;
8769
8770         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8771
8772         if (!drv->roaming_vendor_cmd_avail) {
8773                 wpa_printf(MSG_DEBUG,
8774                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8775                 return -1;
8776         }
8777
8778         msg = nlmsg_alloc();
8779         if (!msg)
8780                 return -ENOMEM;
8781
8782         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR) ||
8783             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8784             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8785             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8786                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
8787             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8788             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8789                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8790                         QCA_ROAMING_NOT_ALLOWED) ||
8791             (bssid &&
8792              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
8793                 nlmsg_free(msg);
8794                 return -1;
8795         }
8796         nla_nest_end(msg, params);
8797
8798         return send_and_recv_msgs(drv, msg, NULL, NULL);
8799 }
8800
8801
8802 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8803 {
8804         struct i802_bss *bss = priv;
8805         struct wpa_driver_nl80211_data *drv = bss->drv;
8806         int new_addr = addr != NULL;
8807
8808         if (!addr)
8809                 addr = drv->perm_addr;
8810
8811         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8812                 return -1;
8813
8814         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8815         {
8816                 wpa_printf(MSG_DEBUG,
8817                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8818                            bss->ifname, MAC2STR(addr));
8819                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8820                                           1) < 0) {
8821                         wpa_printf(MSG_DEBUG,
8822                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8823                 }
8824                 return -1;
8825         }
8826
8827         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8828                    bss->ifname, MAC2STR(addr));
8829         drv->addr_changed = new_addr;
8830         os_memcpy(bss->addr, addr, ETH_ALEN);
8831
8832         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8833         {
8834                 wpa_printf(MSG_DEBUG,
8835                            "nl80211: Could not restore interface UP after set_mac_addr");
8836         }
8837
8838         return 0;
8839 }
8840
8841
8842 #ifdef CONFIG_MESH
8843
8844 static int wpa_driver_nl80211_init_mesh(void *priv)
8845 {
8846         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8847                 wpa_printf(MSG_INFO,
8848                            "nl80211: Failed to set interface into mesh mode");
8849                 return -1;
8850         }
8851         return 0;
8852 }
8853
8854
8855 static int
8856 wpa_driver_nl80211_join_mesh(void *priv,
8857                              struct wpa_driver_mesh_join_params *params)
8858 {
8859         struct i802_bss *bss = priv;
8860         struct wpa_driver_nl80211_data *drv = bss->drv;
8861         struct nl_msg *msg;
8862         struct nlattr *container;
8863         int ret = 0;
8864
8865         msg = nlmsg_alloc();
8866         if (!msg)
8867                 return -1;
8868
8869         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8870         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_MESH) ||
8871             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex))
8872                 goto fail;
8873         if (params->freq) {
8874                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8875                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
8876                         goto fail;
8877         }
8878
8879         if (params->ht_mode) {
8880                 unsigned int ht_value;
8881                 char *ht_mode = "";
8882
8883                 switch (params->ht_mode) {
8884                 default:
8885                 case CHAN_NO_HT:
8886                         ht_value = NL80211_CHAN_NO_HT;
8887                         ht_mode = "NOHT";
8888                         break;
8889                 case CHAN_HT20:
8890                         ht_value = NL80211_CHAN_HT20;
8891                         ht_mode = "HT20";
8892                         break;
8893                 case CHAN_HT40PLUS:
8894                         ht_value = NL80211_CHAN_HT40PLUS;
8895                         ht_mode = "HT40+";
8896                         break;
8897                 case CHAN_HT40MINUS:
8898                         ht_value = NL80211_CHAN_HT40MINUS;
8899                         ht_mode = "HT40-";
8900                         break;
8901                 }
8902                 wpa_printf(MSG_DEBUG, "  * ht_mode=%s", ht_mode);
8903                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ht_value))
8904                         goto fail;
8905         }
8906
8907         if (params->basic_rates) {
8908                 u8 rates[NL80211_MAX_SUPP_RATES];
8909                 u8 rates_len = 0;
8910                 int i;
8911
8912                 for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
8913                         if (params->basic_rates[i] < 0)
8914                                 break;
8915                         rates[rates_len++] = params->basic_rates[i] / 5;
8916                 }
8917
8918                 if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
8919                             rates))
8920                         goto fail;
8921         }
8922
8923         if (params->meshid) {
8924                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8925                                   params->meshid, params->meshid_len);
8926                 if (nla_put(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
8927                             params->meshid))
8928                         goto fail;
8929         }
8930
8931         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8932
8933         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8934         if (!container)
8935                 goto fail;
8936
8937         if (params->ies) {
8938                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8939                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8940                             params->ies))
8941                         goto fail;
8942         }
8943         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8944         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8945                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8946                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8947                         goto fail;
8948         }
8949         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8950             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8951                 goto fail;
8952         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8953             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8954                 goto fail;
8955         nla_nest_end(msg, container);
8956
8957         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8958         if (!container)
8959                 goto fail;
8960
8961         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8962             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8963                 goto fail;
8964         nla_nest_end(msg, container);
8965
8966         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8967         msg = NULL;
8968         if (ret) {
8969                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8970                            ret, strerror(-ret));
8971                 goto fail;
8972         }
8973         ret = 0;
8974         bss->freq = params->freq;
8975         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8976
8977 fail:
8978         nlmsg_free(msg);
8979         return ret;
8980 }
8981
8982
8983 static int wpa_driver_nl80211_leave_mesh(void *priv)
8984 {
8985         struct i802_bss *bss = priv;
8986         struct wpa_driver_nl80211_data *drv = bss->drv;
8987         struct nl_msg *msg;
8988         int ret = 0;
8989
8990         msg = nlmsg_alloc();
8991         if (!msg)
8992                 return -1;
8993
8994         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8995         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_MESH) ||
8996             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex))
8997                 goto fail;
8998
8999         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9000         msg = NULL;
9001         if (ret) {
9002                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
9003                            ret, strerror(-ret));
9004         } else {
9005                 wpa_printf(MSG_DEBUG,
9006                            "nl80211: mesh leave request send successfully");
9007         }
9008
9009 fail:
9010         nlmsg_free(msg);
9011         if (wpa_driver_nl80211_set_mode(drv->first_bss,
9012                                         NL80211_IFTYPE_STATION)) {
9013                 wpa_printf(MSG_INFO,
9014                            "nl80211: Failed to set interface into station mode");
9015         }
9016         return ret;
9017 }
9018
9019 #endif /* CONFIG_MESH */
9020
9021
9022 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
9023                                       const u8 *ipaddr, int prefixlen,
9024                                       const u8 *addr)
9025 {
9026 #ifdef CONFIG_LIBNL3_ROUTE
9027         struct i802_bss *bss = priv;
9028         struct wpa_driver_nl80211_data *drv = bss->drv;
9029         struct rtnl_neigh *rn;
9030         struct nl_addr *nl_ipaddr = NULL;
9031         struct nl_addr *nl_lladdr = NULL;
9032         int family, addrsize;
9033         int res;
9034
9035         if (!ipaddr || prefixlen == 0 || !addr)
9036                 return -EINVAL;
9037
9038         if (bss->br_ifindex == 0) {
9039                 wpa_printf(MSG_DEBUG,
9040                            "nl80211: bridge must be set before adding an ip neigh to it");
9041                 return -1;
9042         }
9043
9044         if (!drv->rtnl_sk) {
9045                 wpa_printf(MSG_DEBUG,
9046                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
9047                 return -1;
9048         }
9049
9050         if (version == 4) {
9051                 family = AF_INET;
9052                 addrsize = 4;
9053         } else if (version == 6) {
9054                 family = AF_INET6;
9055                 addrsize = 16;
9056         } else {
9057                 return -EINVAL;
9058         }
9059
9060         rn = rtnl_neigh_alloc();
9061         if (rn == NULL)
9062                 return -ENOMEM;
9063
9064         /* set the destination ip address for neigh */
9065         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9066         if (nl_ipaddr == NULL) {
9067                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9068                 res = -ENOMEM;
9069                 goto errout;
9070         }
9071         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
9072         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9073         if (res) {
9074                 wpa_printf(MSG_DEBUG,
9075                            "nl80211: neigh set destination addr failed");
9076                 goto errout;
9077         }
9078
9079         /* set the corresponding lladdr for neigh */
9080         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
9081         if (nl_lladdr == NULL) {
9082                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
9083                 res = -ENOMEM;
9084                 goto errout;
9085         }
9086         rtnl_neigh_set_lladdr(rn, nl_lladdr);
9087
9088         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9089         rtnl_neigh_set_state(rn, NUD_PERMANENT);
9090
9091         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
9092         if (res) {
9093                 wpa_printf(MSG_DEBUG,
9094                            "nl80211: Adding bridge ip neigh failed: %s",
9095                            strerror(errno));
9096         }
9097 errout:
9098         if (nl_lladdr)
9099                 nl_addr_put(nl_lladdr);
9100         if (nl_ipaddr)
9101                 nl_addr_put(nl_ipaddr);
9102         if (rn)
9103                 rtnl_neigh_put(rn);
9104         return res;
9105 #else /* CONFIG_LIBNL3_ROUTE */
9106         return -1;
9107 #endif /* CONFIG_LIBNL3_ROUTE */
9108 }
9109
9110
9111 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
9112                                          const u8 *ipaddr)
9113 {
9114 #ifdef CONFIG_LIBNL3_ROUTE
9115         struct i802_bss *bss = priv;
9116         struct wpa_driver_nl80211_data *drv = bss->drv;
9117         struct rtnl_neigh *rn;
9118         struct nl_addr *nl_ipaddr;
9119         int family, addrsize;
9120         int res;
9121
9122         if (!ipaddr)
9123                 return -EINVAL;
9124
9125         if (version == 4) {
9126                 family = AF_INET;
9127                 addrsize = 4;
9128         } else if (version == 6) {
9129                 family = AF_INET6;
9130                 addrsize = 16;
9131         } else {
9132                 return -EINVAL;
9133         }
9134
9135         if (bss->br_ifindex == 0) {
9136                 wpa_printf(MSG_DEBUG,
9137                            "nl80211: bridge must be set to delete an ip neigh");
9138                 return -1;
9139         }
9140
9141         if (!drv->rtnl_sk) {
9142                 wpa_printf(MSG_DEBUG,
9143                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
9144                 return -1;
9145         }
9146
9147         rn = rtnl_neigh_alloc();
9148         if (rn == NULL)
9149                 return -ENOMEM;
9150
9151         /* set the destination ip address for neigh */
9152         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9153         if (nl_ipaddr == NULL) {
9154                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9155                 res = -ENOMEM;
9156                 goto errout;
9157         }
9158         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9159         if (res) {
9160                 wpa_printf(MSG_DEBUG,
9161                            "nl80211: neigh set destination addr failed");
9162                 goto errout;
9163         }
9164
9165         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9166
9167         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
9168         if (res) {
9169                 wpa_printf(MSG_DEBUG,
9170                            "nl80211: Deleting bridge ip neigh failed: %s",
9171                            strerror(errno));
9172         }
9173 errout:
9174         if (nl_ipaddr)
9175                 nl_addr_put(nl_ipaddr);
9176         if (rn)
9177                 rtnl_neigh_put(rn);
9178         return res;
9179 #else /* CONFIG_LIBNL3_ROUTE */
9180         return -1;
9181 #endif /* CONFIG_LIBNL3_ROUTE */
9182 }
9183
9184
9185 static int linux_write_system_file(const char *path, unsigned int val)
9186 {
9187         char buf[50];
9188         int fd, len;
9189
9190         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
9191         if (len < 0)
9192                 return -1;
9193
9194         fd = open(path, O_WRONLY);
9195         if (fd < 0)
9196                 return -1;
9197
9198         if (write(fd, buf, len) < 0) {
9199                 wpa_printf(MSG_DEBUG,
9200                            "nl80211: Failed to write Linux system file: %s with the value of %d",
9201                            path, val);
9202                 close(fd);
9203                 return -1;
9204         }
9205         close(fd);
9206
9207         return 0;
9208 }
9209
9210
9211 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
9212 {
9213         switch (attr) {
9214         case DRV_BR_PORT_ATTR_PROXYARP:
9215                 return "proxyarp";
9216         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
9217                 return "hairpin_mode";
9218         }
9219
9220         return NULL;
9221 }
9222
9223
9224 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
9225                                        unsigned int val)
9226 {
9227         struct i802_bss *bss = priv;
9228         char path[128];
9229         const char *attr_txt;
9230
9231         attr_txt = drv_br_port_attr_str(attr);
9232         if (attr_txt == NULL)
9233                 return -EINVAL;
9234
9235         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
9236                     bss->ifname, attr_txt);
9237
9238         if (linux_write_system_file(path, val))
9239                 return -1;
9240
9241         return 0;
9242 }
9243
9244
9245 static const char * drv_br_net_param_str(enum drv_br_net_param param)
9246 {
9247         switch (param) {
9248         case DRV_BR_NET_PARAM_GARP_ACCEPT:
9249                 return "arp_accept";
9250         }
9251
9252         return NULL;
9253 }
9254
9255
9256 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
9257                                        unsigned int val)
9258 {
9259         struct i802_bss *bss = priv;
9260         char path[128];
9261         const char *param_txt;
9262         int ip_version = 4;
9263
9264         param_txt = drv_br_net_param_str(param);
9265         if (param_txt == NULL)
9266                 return -EINVAL;
9267
9268         switch (param) {
9269                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
9270                         ip_version = 4;
9271                         break;
9272                 default:
9273                         return -EINVAL;
9274         }
9275
9276         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
9277                     ip_version, bss->brname, param_txt);
9278
9279         if (linux_write_system_file(path, val))
9280                 return -1;
9281
9282         return 0;
9283 }
9284
9285
9286 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
9287 {
9288         switch (hw_mode) {
9289         case HOSTAPD_MODE_IEEE80211B:
9290                 return QCA_ACS_MODE_IEEE80211B;
9291         case HOSTAPD_MODE_IEEE80211G:
9292                 return QCA_ACS_MODE_IEEE80211G;
9293         case HOSTAPD_MODE_IEEE80211A:
9294                 return QCA_ACS_MODE_IEEE80211A;
9295         case HOSTAPD_MODE_IEEE80211AD:
9296                 return QCA_ACS_MODE_IEEE80211AD;
9297         default:
9298                 return -1;
9299         }
9300 }
9301
9302
9303 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
9304 {
9305         struct i802_bss *bss = priv;
9306         struct wpa_driver_nl80211_data *drv = bss->drv;
9307         struct nl_msg *msg;
9308         struct nlattr *data;
9309         int ret;
9310         int mode;
9311
9312         mode = hw_mode_to_qca_acs(params->hw_mode);
9313         if (mode < 0)
9314                 return -1;
9315
9316         msg = nlmsg_alloc();
9317         if (!msg)
9318                 return -1;
9319
9320         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR) ||
9321             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
9322             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9323             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9324                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
9325             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9326             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
9327             (params->ht_enabled &&
9328              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
9329             (params->ht40_enabled &&
9330              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
9331                 nlmsg_free(msg);
9332                 return -ENOBUFS;
9333         }
9334         nla_nest_end(msg, data);
9335
9336         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9337         if (ret) {
9338                 wpa_printf(MSG_DEBUG,
9339                            "nl80211: Failed to invoke driver ACS function: %s",
9340                            strerror(errno));
9341         }
9342         return ret;
9343 }
9344
9345
9346 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9347         .name = "nl80211",
9348         .desc = "Linux nl80211/cfg80211",
9349         .get_bssid = wpa_driver_nl80211_get_bssid,
9350         .get_ssid = wpa_driver_nl80211_get_ssid,
9351         .set_key = driver_nl80211_set_key,
9352         .scan2 = driver_nl80211_scan2,
9353         .sched_scan = wpa_driver_nl80211_sched_scan,
9354         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9355         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9356         .deauthenticate = driver_nl80211_deauthenticate,
9357         .authenticate = driver_nl80211_authenticate,
9358         .associate = wpa_driver_nl80211_associate,
9359         .global_init = nl80211_global_init,
9360         .global_deinit = nl80211_global_deinit,
9361         .init2 = wpa_driver_nl80211_init,
9362         .deinit = driver_nl80211_deinit,
9363         .get_capa = wpa_driver_nl80211_get_capa,
9364         .set_operstate = wpa_driver_nl80211_set_operstate,
9365         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9366         .set_country = wpa_driver_nl80211_set_country,
9367         .get_country = wpa_driver_nl80211_get_country,
9368         .set_ap = wpa_driver_nl80211_set_ap,
9369         .set_acl = wpa_driver_nl80211_set_acl,
9370         .if_add = wpa_driver_nl80211_if_add,
9371         .if_remove = driver_nl80211_if_remove,
9372         .send_mlme = driver_nl80211_send_mlme,
9373         .get_hw_feature_data = nl80211_get_hw_feature_data,
9374         .sta_add = wpa_driver_nl80211_sta_add,
9375         .sta_remove = driver_nl80211_sta_remove,
9376         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9377         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9378         .hapd_init = i802_init,
9379         .hapd_deinit = i802_deinit,
9380         .set_wds_sta = i802_set_wds_sta,
9381         .get_seqnum = i802_get_seqnum,
9382         .flush = i802_flush,
9383         .get_inact_sec = i802_get_inact_sec,
9384         .sta_clear_stats = i802_sta_clear_stats,
9385         .set_rts = i802_set_rts,
9386         .set_frag = i802_set_frag,
9387         .set_tx_queue_params = i802_set_tx_queue_params,
9388         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9389         .sta_deauth = i802_sta_deauth,
9390         .sta_disassoc = i802_sta_disassoc,
9391         .read_sta_data = driver_nl80211_read_sta_data,
9392         .set_freq = i802_set_freq,
9393         .send_action = driver_nl80211_send_action,
9394         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9395         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9396         .cancel_remain_on_channel =
9397         wpa_driver_nl80211_cancel_remain_on_channel,
9398         .probe_req_report = driver_nl80211_probe_req_report,
9399         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9400         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9401         .resume = wpa_driver_nl80211_resume,
9402         .send_ft_action = nl80211_send_ft_action,
9403         .signal_monitor = nl80211_signal_monitor,
9404         .signal_poll = nl80211_signal_poll,
9405         .send_frame = nl80211_send_frame,
9406         .shared_freq = wpa_driver_nl80211_shared_freq,
9407         .set_param = nl80211_set_param,
9408         .get_radio_name = nl80211_get_radio_name,
9409         .add_pmkid = nl80211_add_pmkid,
9410         .remove_pmkid = nl80211_remove_pmkid,
9411         .flush_pmkid = nl80211_flush_pmkid,
9412         .set_rekey_info = nl80211_set_rekey_info,
9413         .poll_client = nl80211_poll_client,
9414         .set_p2p_powersave = nl80211_set_p2p_powersave,
9415         .start_dfs_cac = nl80211_start_radar_detection,
9416         .stop_ap = wpa_driver_nl80211_stop_ap,
9417 #ifdef CONFIG_TDLS
9418         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9419         .tdls_oper = nl80211_tdls_oper,
9420 #endif /* CONFIG_TDLS */
9421         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9422         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9423         .get_survey = wpa_driver_nl80211_get_survey,
9424         .status = wpa_driver_nl80211_status,
9425         .switch_channel = nl80211_switch_channel,
9426 #ifdef ANDROID_P2P
9427         .set_noa = wpa_driver_set_p2p_noa,
9428         .get_noa = wpa_driver_get_p2p_noa,
9429         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9430 #endif /* ANDROID_P2P */
9431 #ifdef ANDROID
9432         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9433 #endif /* ANDROID */
9434         .vendor_cmd = nl80211_vendor_cmd,
9435         .set_qos_map = nl80211_set_qos_map,
9436         .set_wowlan = nl80211_set_wowlan,
9437         .roaming = nl80211_roaming,
9438         .set_mac_addr = nl80211_set_mac_addr,
9439 #ifdef CONFIG_MESH
9440         .init_mesh = wpa_driver_nl80211_init_mesh,
9441         .join_mesh = wpa_driver_nl80211_join_mesh,
9442         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9443 #endif /* CONFIG_MESH */
9444         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9445         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9446         .br_port_set_attr = wpa_driver_br_port_set_attr,
9447         .br_set_net_param = wpa_driver_br_set_net_param,
9448         .add_tx_ts = nl80211_add_ts,
9449         .del_tx_ts = nl80211_del_ts,
9450         .do_acs = wpa_driver_do_acs,
9451 };