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 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 160                                    const u8 *addr, int cmd, u16 reason_code,
 161                                    int local_state_change);
 162 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 163                                   unsigned int freq, unsigned int wait,
 164                                   const u8 *buf, size_t buf_len, u64 *cookie,
 165                                   int no_cck, int no_ack, int offchanok);
 166 static int nl80211_register_frame(struct i802_bss *bss,
 167                                   struct nl_handle *hl_handle,
 168                                   u16 type, const u8 *match, size_t match_len);
 169 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 170                                                int report);
 171
 172 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 173 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 174 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 175 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
 176                                         enum wpa_driver_if_type type,
 177                                         const char *ifname);
 178
 179 static int nl80211_set_channel(struct i802_bss *bss,
 180                                struct hostapd_freq_params *freq, int set_chan);
 181 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 182                                      int ifindex, int disabled);
 183
 184 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
 185
 186 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 187 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 188
 189
 190 /* Converts nl80211_chan_width to a common format */
 191 enum chan_width convert2width(int width)
 192 {
 193         switch (width) {
 194         case NL80211_CHAN_WIDTH_20_NOHT:
 195                 return CHAN_WIDTH_20_NOHT;
 196         case NL80211_CHAN_WIDTH_20:
 197                 return CHAN_WIDTH_20;
 198         case NL80211_CHAN_WIDTH_40:
 199                 return CHAN_WIDTH_40;
 200         case NL80211_CHAN_WIDTH_80:
 201                 return CHAN_WIDTH_80;
 202         case NL80211_CHAN_WIDTH_80P80:
 203                 return CHAN_WIDTH_80P80;
 204         case NL80211_CHAN_WIDTH_160:
 205                 return CHAN_WIDTH_160;
 206         }
 207         return CHAN_WIDTH_UNKNOWN;
 208 }
 209
 210
 211 int is_ap_interface(enum nl80211_iftype nlmode)
 212 {
 213         return nlmode == NL80211_IFTYPE_AP ||
 214                 nlmode == NL80211_IFTYPE_P2P_GO;
 215 }
 216
 217
 218 static int is_sta_interface(enum nl80211_iftype nlmode)
 219 {
 220         return nlmode == NL80211_IFTYPE_STATION ||
 221                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 222 }
 223
 224
 225 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 226 {
 227         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 228                 nlmode == NL80211_IFTYPE_P2P_GO;
 229 }
 230
 231
 232 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 233                                   int ifindex)
 234 {
 235         struct i802_bss *bss;
 236
 237         for (bss = drv->first_bss; bss; bss = bss->next) {
 238                 if (bss->ifindex == ifindex)
 239                         return bss;
 240         }
 241
 242         return NULL;
 243 }
 244
 245
 246 static int is_mesh_interface(enum nl80211_iftype nlmode)
 247 {
 248         return nlmode == NL80211_IFTYPE_MESH_POINT;
 249 }
 250
 251
 252 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 253 {
 254         if (drv->associated)
 255                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 256         drv->associated = 0;
 257         os_memset(drv->bssid, 0, ETH_ALEN);
 258 }
 259
 260
 261 struct nl80211_bss_info_arg {
 262         struct wpa_driver_nl80211_data *drv;
 263         struct wpa_scan_results *res;
 264         unsigned int assoc_freq;
 265         unsigned int ibss_freq;
 266         u8 assoc_bssid[ETH_ALEN];
 267 };
 268
 269 static int bss_info_handler(struct nl_msg *msg, void *arg);
 270
 271
 272 /* nl80211 code */
 273 static int ack_handler(struct nl_msg *msg, void *arg)
 274 {
 275         int *err = arg;
 276         *err = 0;
 277         return NL_STOP;
 278 }
 279
 280 static int finish_handler(struct nl_msg *msg, void *arg)
 281 {
 282         int *ret = arg;
 283         *ret = 0;
 284         return NL_SKIP;
 285 }
 286
 287 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 288                          void *arg)
 289 {
 290         int *ret = arg;
 291         *ret = err->error;
 292         return NL_SKIP;
 293 }
 294
 295
 296 static int no_seq_check(struct nl_msg *msg, void *arg)
 297 {
 298         return NL_OK;
 299 }
 300
 301
 302 static int send_and_recv(struct nl80211_global *global,
 303                          struct nl_handle *nl_handle, struct nl_msg *msg,
 304                          int (*valid_handler)(struct nl_msg *, void *),
 305                          void *valid_data)
 306 {
 307         struct nl_cb *cb;
 308         int err = -ENOMEM;
 309
 310         cb = nl_cb_clone(global->nl_cb);
 311         if (!cb)
 312                 goto out;
 313
 314         err = nl_send_auto_complete(nl_handle, msg);
 315         if (err < 0)
 316                 goto out;
 317
 318         err = 1;
 319
 320         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 321         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 322         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 323
 324         if (valid_handler)
 325                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 326                           valid_handler, valid_data);
 327
 328         while (err > 0) {
 329                 int res = nl_recvmsgs(nl_handle, cb);
 330                 if (res < 0) {
 331                         wpa_printf(MSG_INFO,
 332                                    "nl80211: %s->nl_recvmsgs failed: %d",
 333                                    __func__, res);
 334                 }
 335         }
 336  out:
 337         nl_cb_put(cb);
 338         nlmsg_free(msg);
 339         return err;
 340 }
 341
 342
 343 static int send_and_recv_msgs_global(struct nl80211_global *global,
 344                                      struct nl_msg *msg,
 345                                      int (*valid_handler)(struct nl_msg *, void *),
 346                                      void *valid_data)
 347 {
 348         return send_and_recv(global, global->nl, msg, valid_handler,
 349                              valid_data);
 350 }
 351
 352
 353 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 354                        struct nl_msg *msg,
 355                        int (*valid_handler)(struct nl_msg *, void *),
 356                        void *valid_data)
 357 {
 358         return send_and_recv(drv->global, drv->global->nl, msg,
 359                              valid_handler, valid_data);
 360 }
 361
 362
 363 struct family_data {
 364         const char *group;
 365         int id;
 366 };
 367
 368
 369 int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 370 {
 371         if (bss->wdev_id_set)
 372                 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 373         else
 374                 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 375         return 0;
 376
 377 nla_put_failure:
 378         return -1;
 379 }
 380
 381
 382 static int family_handler(struct nl_msg *msg, void *arg)
 383 {
 384         struct family_data *res = arg;
 385         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 386         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 387         struct nlattr *mcgrp;
 388         int i;
 389
 390         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 391                   genlmsg_attrlen(gnlh, 0), NULL);
 392         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 393                 return NL_SKIP;
 394
 395         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 396                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 397                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 398                           nla_len(mcgrp), NULL);
 399                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 400                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 401                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 402                                res->group,
 403                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 404                         continue;
 405                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 406                 break;
 407         };
 408
 409         return NL_SKIP;
 410 }
 411
 412
 413 static int nl_get_multicast_id(struct nl80211_global *global,
 414                                const char *family, const char *group)
 415 {
 416         struct nl_msg *msg;
 417         int ret = -1;
 418         struct family_data res = { group, -ENOENT };
 419
 420         msg = nlmsg_alloc();
 421         if (!msg)
 422                 return -ENOMEM;
 423         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 424                     0, 0, CTRL_CMD_GETFAMILY, 0);
 425         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 426
 427         ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
 428         msg = NULL;
 429         if (ret == 0)
 430                 ret = res.id;
 431
 432 nla_put_failure:
 433         nlmsg_free(msg);
 434         return ret;
 435 }
 436
 437
 438 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 439                    struct nl_msg *msg, int flags, uint8_t cmd)
 440 {
 441         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 442                            0, flags, cmd, 0);
 443 }
 444
 445
 446 struct wiphy_idx_data {
 447         int wiphy_idx;
 448         enum nl80211_iftype nlmode;
 449         u8 *macaddr;
 450 };
 451
 452
 453 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 454 {
 455         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 456         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 457         struct wiphy_idx_data *info = arg;
 458
 459         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 460                   genlmsg_attrlen(gnlh, 0), NULL);
 461
 462         if (tb[NL80211_ATTR_WIPHY])
 463                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 464
 465         if (tb[NL80211_ATTR_IFTYPE])
 466                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 467
 468         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 469                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 470                           ETH_ALEN);
 471
 472         return NL_SKIP;
 473 }
 474
 475
 476 int nl80211_get_wiphy_index(struct i802_bss *bss)
 477 {
 478         struct nl_msg *msg;
 479         struct wiphy_idx_data data = {
 480                 .wiphy_idx = -1,
 481                 .macaddr = NULL,
 482         };
 483
 484         msg = nlmsg_alloc();
 485         if (!msg)
 486                 return NL80211_IFTYPE_UNSPECIFIED;
 487
 488         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 489
 490         if (nl80211_set_iface_id(msg, bss) < 0)
 491                 goto nla_put_failure;
 492
 493         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 494                 return data.wiphy_idx;
 495         msg = NULL;
 496 nla_put_failure:
 497         nlmsg_free(msg);
 498         return -1;
 499 }
 500
 501
 502 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 503 {
 504         struct nl_msg *msg;
 505         struct wiphy_idx_data data = {
 506                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 507                 .macaddr = NULL,
 508         };
 509
 510         msg = nlmsg_alloc();
 511         if (!msg)
 512                 return -1;
 513
 514         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 515
 516         if (nl80211_set_iface_id(msg, bss) < 0)
 517                 goto nla_put_failure;
 518
 519         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 520                 return data.nlmode;
 521         msg = NULL;
 522 nla_put_failure:
 523         nlmsg_free(msg);
 524         return NL80211_IFTYPE_UNSPECIFIED;
 525 }
 526
 527
 528 static int nl80211_get_macaddr(struct i802_bss *bss)
 529 {
 530         struct nl_msg *msg;
 531         struct wiphy_idx_data data = {
 532                 .macaddr = bss->addr,
 533         };
 534
 535         msg = nlmsg_alloc();
 536         if (!msg)
 537                 return NL80211_IFTYPE_UNSPECIFIED;
 538
 539         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 540         if (nl80211_set_iface_id(msg, bss) < 0)
 541                 goto nla_put_failure;
 542
 543         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 544
 545 nla_put_failure:
 546         nlmsg_free(msg);
 547         return NL80211_IFTYPE_UNSPECIFIED;
 548 }
 549
 550
 551 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 552                                     struct nl80211_wiphy_data *w)
 553 {
 554         struct nl_msg *msg;
 555         int ret = -1;
 556
 557         msg = nlmsg_alloc();
 558         if (!msg)
 559                 return -1;
 560
 561         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
 562
 563         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
 564
 565         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 566         msg = NULL;
 567         if (ret) {
 568                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 569                            "failed: ret=%d (%s)",
 570                            ret, strerror(-ret));
 571                 goto nla_put_failure;
 572         }
 573         ret = 0;
 574 nla_put_failure:
 575         nlmsg_free(msg);
 576         return ret;
 577 }
 578
 579
 580 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 581 {
 582         struct nl80211_wiphy_data *w = eloop_ctx;
 583         int res;
 584
 585         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 586
 587         res = nl_recvmsgs(handle, w->nl_cb);
 588         if (res < 0) {
 589                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 590                            __func__, res);
 591         }
 592 }
 593
 594
 595 static int process_beacon_event(struct nl_msg *msg, void *arg)
 596 {
 597         struct nl80211_wiphy_data *w = arg;
 598         struct wpa_driver_nl80211_data *drv;
 599         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 600         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 601         union wpa_event_data event;
 602
 603         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 604                   genlmsg_attrlen(gnlh, 0), NULL);
 605
 606         if (gnlh->cmd != NL80211_CMD_FRAME) {
 607                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 608                            gnlh->cmd);
 609                 return NL_SKIP;
 610         }
 611
 612         if (!tb[NL80211_ATTR_FRAME])
 613                 return NL_SKIP;
 614
 615         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 616                          wiphy_list) {
 617                 os_memset(&event, 0, sizeof(event));
 618                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 619                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 620                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 621         }
 622
 623         return NL_SKIP;
 624 }
 625
 626
 627 static struct nl80211_wiphy_data *
 628 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 629 {
 630         static DEFINE_DL_LIST(nl80211_wiphys);
 631         struct nl80211_wiphy_data *w;
 632         int wiphy_idx, found = 0;
 633         struct i802_bss *tmp_bss;
 634
 635         if (bss->wiphy_data != NULL)
 636                 return bss->wiphy_data;
 637
 638         wiphy_idx = nl80211_get_wiphy_index(bss);
 639
 640         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 641                 if (w->wiphy_idx == wiphy_idx)
 642                         goto add;
 643         }
 644
 645         /* alloc new one */
 646         w = os_zalloc(sizeof(*w));
 647         if (w == NULL)
 648                 return NULL;
 649         w->wiphy_idx = wiphy_idx;
 650         dl_list_init(&w->bsss);
 651         dl_list_init(&w->drvs);
 652
 653         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 654         if (!w->nl_cb) {
 655                 os_free(w);
 656                 return NULL;
 657         }
 658         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 659         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 660                   w);
 661
 662         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 663                                          "wiphy beacons");
 664         if (w->nl_beacons == NULL) {
 665                 os_free(w);
 666                 return NULL;
 667         }
 668
 669         if (nl80211_register_beacons(bss->drv, w)) {
 670                 nl_destroy_handles(&w->nl_beacons);
 671                 os_free(w);
 672                 return NULL;
 673         }
 674
 675         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 676
 677         dl_list_add(&nl80211_wiphys, &w->list);
 678
 679 add:
 680         /* drv entry for this bss already there? */
 681         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 682                 if (tmp_bss->drv == bss->drv) {
 683                         found = 1;
 684                         break;
 685                 }
 686         }
 687         /* if not add it */
 688         if (!found)
 689                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 690
 691         dl_list_add(&w->bsss, &bss->wiphy_list);
 692         bss->wiphy_data = w;
 693         return w;
 694 }
 695
 696
 697 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 698 {
 699         struct nl80211_wiphy_data *w = bss->wiphy_data;
 700         struct i802_bss *tmp_bss;
 701         int found = 0;
 702
 703         if (w == NULL)
 704                 return;
 705         bss->wiphy_data = NULL;
 706         dl_list_del(&bss->wiphy_list);
 707
 708         /* still any for this drv present? */
 709         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 710                 if (tmp_bss->drv == bss->drv) {
 711                         found = 1;
 712                         break;
 713                 }
 714         }
 715         /* if not remove it */
 716         if (!found)
 717                 dl_list_del(&bss->drv->wiphy_list);
 718
 719         if (!dl_list_empty(&w->bsss))
 720                 return;
 721
 722         nl80211_destroy_eloop_handle(&w->nl_beacons);
 723
 724         nl_cb_put(w->nl_cb);
 725         dl_list_del(&w->list);
 726         os_free(w);
 727 }
 728
 729
 730 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 731 {
 732         struct i802_bss *bss = priv;
 733         struct wpa_driver_nl80211_data *drv = bss->drv;
 734         if (!drv->associated)
 735                 return -1;
 736         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 737         return 0;
 738 }
 739
 740
 741 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 742 {
 743         struct i802_bss *bss = priv;
 744         struct wpa_driver_nl80211_data *drv = bss->drv;
 745         if (!drv->associated)
 746                 return -1;
 747         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 748         return drv->ssid_len;
 749 }
 750
 751
 752 static void wpa_driver_nl80211_event_newlink(
 753         struct wpa_driver_nl80211_data *drv, char *ifname)
 754 {
 755         union wpa_event_data event;
 756
 757         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 758                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 759                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 760                                    drv->first_bss->ifname);
 761                         return;
 762                 }
 763                 if (!drv->if_removed)
 764                         return;
 765                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 766                            drv->first_bss->ifname);
 767                 drv->if_removed = 0;
 768         }
 769
 770         os_memset(&event, 0, sizeof(event));
 771         os_strlcpy(event.interface_status.ifname, ifname,
 772                    sizeof(event.interface_status.ifname));
 773         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 774         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 775 }
 776
 777
 778 static void wpa_driver_nl80211_event_dellink(
 779         struct wpa_driver_nl80211_data *drv, char *ifname)
 780 {
 781         union wpa_event_data event;
 782
 783         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 784                 if (drv->if_removed) {
 785                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 786                                    ifname);
 787                         return;
 788                 }
 789                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 790                            ifname);
 791                 drv->if_removed = 1;
 792         } else {
 793                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 794                            ifname);
 795         }
 796
 797         os_memset(&event, 0, sizeof(event));
 798         os_strlcpy(event.interface_status.ifname, ifname,
 799                    sizeof(event.interface_status.ifname));
 800         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 801         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 802 }
 803
 804
 805 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 806                                          u8 *buf, size_t len)
 807 {
 808         int attrlen, rta_len;
 809         struct rtattr *attr;
 810
 811         attrlen = len;
 812         attr = (struct rtattr *) buf;
 813
 814         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 815         while (RTA_OK(attr, attrlen)) {
 816                 if (attr->rta_type == IFLA_IFNAME) {
 817                         if (os_strcmp(((char *) attr) + rta_len,
 818                                       drv->first_bss->ifname) == 0)
 819                                 return 1;
 820                         else
 821                                 break;
 822                 }
 823                 attr = RTA_NEXT(attr, attrlen);
 824         }
 825
 826         return 0;
 827 }
 828
 829
 830 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 831                                           int ifindex, u8 *buf, size_t len)
 832 {
 833         if (drv->ifindex == ifindex)
 834                 return 1;
 835
 836         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 837                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 838                            "interface");
 839                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0);
 840                 return 1;
 841         }
 842
 843         return 0;
 844 }
 845
 846
 847 static struct wpa_driver_nl80211_data *
 848 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 849 {
 850         struct wpa_driver_nl80211_data *drv;
 851         dl_list_for_each(drv, &global->interfaces,
 852                          struct wpa_driver_nl80211_data, list) {
 853                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 854                     have_ifidx(drv, idx))
 855                         return drv;
 856         }
 857         return NULL;
 858 }
 859
 860
 861 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 862                                                  struct ifinfomsg *ifi,
 863                                                  u8 *buf, size_t len)
 864 {
 865         struct nl80211_global *global = ctx;
 866         struct wpa_driver_nl80211_data *drv;
 867         int attrlen;
 868         struct rtattr *attr;
 869         u32 brid = 0;
 870         char namebuf[IFNAMSIZ];
 871         char ifname[IFNAMSIZ + 1];
 872         char extra[100], *pos, *end;
 873
 874         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 875         if (!drv) {
 876                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 877                            ifi->ifi_index);
 878                 return;
 879         }
 880
 881         extra[0] = '\0';
 882         pos = extra;
 883         end = pos + sizeof(extra);
 884         ifname[0] = '\0';
 885
 886         attrlen = len;
 887         attr = (struct rtattr *) buf;
 888         while (RTA_OK(attr, attrlen)) {
 889                 switch (attr->rta_type) {
 890                 case IFLA_IFNAME:
 891                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 892                                 break;
 893                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 894                         ifname[RTA_PAYLOAD(attr)] = '\0';
 895                         break;
 896                 case IFLA_MASTER:
 897                         brid = nla_get_u32((struct nlattr *) attr);
 898                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 899                         break;
 900                 case IFLA_WIRELESS:
 901                         pos += os_snprintf(pos, end - pos, " wext");
 902                         break;
 903                 case IFLA_OPERSTATE:
 904                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 905                                            nla_get_u32((struct nlattr *) attr));
 906                         break;
 907                 case IFLA_LINKMODE:
 908                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 909                                            nla_get_u32((struct nlattr *) attr));
 910                         break;
 911                 }
 912                 attr = RTA_NEXT(attr, attrlen);
 913         }
 914         extra[sizeof(extra) - 1] = '\0';
 915
 916         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 917                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 918                    ifi->ifi_flags,
 919                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 920                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 921                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 922                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 923
 924         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 925                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 926                     linux_iface_up(drv->global->ioctl_sock,
 927                                    drv->first_bss->ifname) > 0) {
 928                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 929                                    "event since interface %s is up", namebuf);
 930                         drv->ignore_if_down_event = 0;
 931                         return;
 932                 }
 933                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 934                 if (drv->ignore_if_down_event) {
 935                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 936                                    "event generated by mode change");
 937                         drv->ignore_if_down_event = 0;
 938                 } else {
 939                         drv->if_disabled = 1;
 940                         wpa_supplicant_event(drv->ctx,
 941                                              EVENT_INTERFACE_DISABLED, NULL);
 942
 943                         /*
 944                          * Try to get drv again, since it may be removed as
 945                          * part of the EVENT_INTERFACE_DISABLED handling for
 946                          * dynamic interfaces
 947                          */
 948                         drv = nl80211_find_drv(global, ifi->ifi_index,
 949                                                buf, len);
 950                         if (!drv)
 951                                 return;
 952                 }
 953         }
 954
 955         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 956                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 957                     linux_iface_up(drv->global->ioctl_sock,
 958                                    drv->first_bss->ifname) == 0) {
 959                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 960                                    "event since interface %s is down",
 961                                    namebuf);
 962                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 963                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 964                                    "event since interface %s does not exist",
 965                                    drv->first_bss->ifname);
 966                 } else if (drv->if_removed) {
 967                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 968                                    "event since interface %s is marked "
 969                                    "removed", drv->first_bss->ifname);
 970                 } else {
 971                         struct i802_bss *bss;
 972                         u8 addr[ETH_ALEN];
 973
 974                         /* Re-read MAC address as it may have changed */
 975                         bss = get_bss_ifindex(drv, ifi->ifi_index);
 976                         if (bss &&
 977                             linux_get_ifhwaddr(drv->global->ioctl_sock,
 978                                                bss->ifname, addr) < 0) {
 979                                 wpa_printf(MSG_DEBUG,
 980                                            "nl80211: %s: failed to re-read MAC address",
 981                                            bss->ifname);
 982                         } else if (bss &&
 983                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
 984                                 wpa_printf(MSG_DEBUG,
 985                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
 986                                            MACSTR " to " MACSTR,
 987                                            ifi->ifi_index, bss->ifname,
 988                                            MAC2STR(bss->addr),
 989                                            MAC2STR(addr));
 990                                 os_memcpy(bss->addr, addr, ETH_ALEN);
 991                         }
 992
 993                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
 994                         drv->if_disabled = 0;
 995                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
 996                                              NULL);
 997                 }
 998         }
 999
1000         /*
1001          * Some drivers send the association event before the operup event--in
1002          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1003          * fails. This will hit us when wpa_supplicant does not need to do
1004          * IEEE 802.1X authentication
1005          */
1006         if (drv->operstate == 1 &&
1007             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1008             !(ifi->ifi_flags & IFF_RUNNING)) {
1009                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1010                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1011                                        -1, IF_OPER_UP);
1012         }
1013
1014         if (ifname[0])
1015                 wpa_driver_nl80211_event_newlink(drv, ifname);
1016
1017         if (ifi->ifi_family == AF_BRIDGE && brid) {
1018                 struct i802_bss *bss;
1019
1020                 /* device has been added to bridge */
1021                 if_indextoname(brid, namebuf);
1022                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1023                            brid, namebuf);
1024                 add_ifidx(drv, brid);
1025
1026                 for (bss = drv->first_bss; bss; bss = bss->next) {
1027                         if (os_strcmp(ifname, bss->ifname) == 0) {
1028                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1029                                 break;
1030                         }
1031                 }
1032         }
1033 }
1034
1035
1036 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1037                                                  struct ifinfomsg *ifi,
1038                                                  u8 *buf, size_t len)
1039 {
1040         struct nl80211_global *global = ctx;
1041         struct wpa_driver_nl80211_data *drv;
1042         int attrlen;
1043         struct rtattr *attr;
1044         u32 brid = 0;
1045         char ifname[IFNAMSIZ + 1];
1046         char extra[100], *pos, *end;
1047
1048         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1049         if (!drv) {
1050                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1051                            ifi->ifi_index);
1052                 return;
1053         }
1054
1055         extra[0] = '\0';
1056         pos = extra;
1057         end = pos + sizeof(extra);
1058         ifname[0] = '\0';
1059
1060         attrlen = len;
1061         attr = (struct rtattr *) buf;
1062         while (RTA_OK(attr, attrlen)) {
1063                 switch (attr->rta_type) {
1064                 case IFLA_IFNAME:
1065                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1066                                 break;
1067                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1068                         ifname[RTA_PAYLOAD(attr)] = '\0';
1069                         break;
1070                 case IFLA_MASTER:
1071                         brid = nla_get_u32((struct nlattr *) attr);
1072                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1073                         break;
1074                 case IFLA_OPERSTATE:
1075                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1076                                            nla_get_u32((struct nlattr *) attr));
1077                         break;
1078                 case IFLA_LINKMODE:
1079                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1080                                            nla_get_u32((struct nlattr *) attr));
1081                         break;
1082                 }
1083                 attr = RTA_NEXT(attr, attrlen);
1084         }
1085         extra[sizeof(extra) - 1] = '\0';
1086
1087         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1088                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1089                    ifi->ifi_flags,
1090                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1091                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1092                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1093                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1094
1095         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1096                 wpa_driver_nl80211_event_dellink(drv, ifname);
1097
1098         if (ifi->ifi_family == AF_BRIDGE && brid) {
1099                 /* device has been removed from bridge */
1100                 char namebuf[IFNAMSIZ];
1101                 if_indextoname(brid, namebuf);
1102                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1103                            "%s", brid, namebuf);
1104                 del_ifidx(drv, brid);
1105         }
1106 }
1107
1108
1109 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1110 {
1111         struct nl_msg *msg;
1112         int ret;
1113         struct nl80211_bss_info_arg arg;
1114
1115         os_memset(&arg, 0, sizeof(arg));
1116         msg = nlmsg_alloc();
1117         if (!msg)
1118                 goto nla_put_failure;
1119
1120         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1121         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1122
1123         arg.drv = drv;
1124         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1125         msg = NULL;
1126         if (ret == 0) {
1127                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1128                         arg.ibss_freq : arg.assoc_freq;
1129                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1130                            "associated BSS from scan results: %u MHz", freq);
1131                 if (freq)
1132                         drv->assoc_freq = freq;
1133                 return drv->assoc_freq;
1134         }
1135         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1136                    "(%s)", ret, strerror(-ret));
1137 nla_put_failure:
1138         nlmsg_free(msg);
1139         return drv->assoc_freq;
1140 }
1141
1142
1143 static int get_link_signal(struct nl_msg *msg, void *arg)
1144 {
1145         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1146         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1147         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1148         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1149                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1150                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1151         };
1152         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1153         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1154                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1155                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1156                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1157                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1158         };
1159         struct wpa_signal_info *sig_change = arg;
1160
1161         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1162                   genlmsg_attrlen(gnlh, 0), NULL);
1163         if (!tb[NL80211_ATTR_STA_INFO] ||
1164             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1165                              tb[NL80211_ATTR_STA_INFO], policy))
1166                 return NL_SKIP;
1167         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1168                 return NL_SKIP;
1169
1170         sig_change->current_signal =
1171                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1172
1173         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1174                 sig_change->avg_signal =
1175                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1176         else
1177                 sig_change->avg_signal = 0;
1178
1179         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1180                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1181                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1182                                      rate_policy)) {
1183                         sig_change->current_txrate = 0;
1184                 } else {
1185                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1186                                 sig_change->current_txrate =
1187                                         nla_get_u16(rinfo[
1188                                              NL80211_RATE_INFO_BITRATE]) * 100;
1189                         }
1190                 }
1191         }
1192
1193         return NL_SKIP;
1194 }
1195
1196
1197 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1198                             struct wpa_signal_info *sig)
1199 {
1200         struct nl_msg *msg;
1201
1202         sig->current_signal = -9999;
1203         sig->current_txrate = 0;
1204
1205         msg = nlmsg_alloc();
1206         if (!msg)
1207                 return -ENOMEM;
1208
1209         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1210
1211         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1212         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1213
1214         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1215  nla_put_failure:
1216         nlmsg_free(msg);
1217         return -ENOBUFS;
1218 }
1219
1220
1221 static int get_link_noise(struct nl_msg *msg, void *arg)
1222 {
1223         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1224         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1225         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1226         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1227                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1228                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1229         };
1230         struct wpa_signal_info *sig_change = arg;
1231
1232         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1233                   genlmsg_attrlen(gnlh, 0), NULL);
1234
1235         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1236                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1237                 return NL_SKIP;
1238         }
1239
1240         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1241                              tb[NL80211_ATTR_SURVEY_INFO],
1242                              survey_policy)) {
1243                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1244                            "attributes!");
1245                 return NL_SKIP;
1246         }
1247
1248         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1249                 return NL_SKIP;
1250
1251         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1252             sig_change->frequency)
1253                 return NL_SKIP;
1254
1255         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1256                 return NL_SKIP;
1257
1258         sig_change->current_noise =
1259                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1260
1261         return NL_SKIP;
1262 }
1263
1264
1265 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1266                            struct wpa_signal_info *sig_change)
1267 {
1268         struct nl_msg *msg;
1269
1270         sig_change->current_noise = 9999;
1271         sig_change->frequency = drv->assoc_freq;
1272
1273         msg = nlmsg_alloc();
1274         if (!msg)
1275                 return -ENOMEM;
1276
1277         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1278
1279         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1280
1281         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1282  nla_put_failure:
1283         nlmsg_free(msg);
1284         return -ENOBUFS;
1285 }
1286
1287
1288 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1289 {
1290         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1291         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1292         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1293         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1294                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1295                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1296         };
1297         struct wpa_scan_results *scan_results = arg;
1298         struct wpa_scan_res *scan_res;
1299         size_t i;
1300
1301         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1302                   genlmsg_attrlen(gnlh, 0), NULL);
1303
1304         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1305                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1306                 return NL_SKIP;
1307         }
1308
1309         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1310                              tb[NL80211_ATTR_SURVEY_INFO],
1311                              survey_policy)) {
1312                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1313                            "attributes");
1314                 return NL_SKIP;
1315         }
1316
1317         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1318                 return NL_SKIP;
1319
1320         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1321                 return NL_SKIP;
1322
1323         for (i = 0; i < scan_results->num; ++i) {
1324                 scan_res = scan_results->res[i];
1325                 if (!scan_res)
1326                         continue;
1327                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1328                     scan_res->freq)
1329                         continue;
1330                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1331                         continue;
1332                 scan_res->noise = (s8)
1333                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1334                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1335         }
1336
1337         return NL_SKIP;
1338 }
1339
1340
1341 static int nl80211_get_noise_for_scan_results(
1342         struct wpa_driver_nl80211_data *drv,
1343         struct wpa_scan_results *scan_res)
1344 {
1345         struct nl_msg *msg;
1346
1347         msg = nlmsg_alloc();
1348         if (!msg)
1349                 return -ENOMEM;
1350
1351         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1352
1353         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1354
1355         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1356                                   scan_res);
1357  nla_put_failure:
1358         nlmsg_free(msg);
1359         return -ENOBUFS;
1360 }
1361
1362
1363 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1364                                              void *handle)
1365 {
1366         struct nl_cb *cb = eloop_ctx;
1367         int res;
1368
1369         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1370
1371         res = nl_recvmsgs(handle, cb);
1372         if (res < 0) {
1373                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1374                            __func__, res);
1375         }
1376 }
1377
1378
1379 /**
1380  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1381  * @priv: driver_nl80211 private data
1382  * @alpha2_arg: country to which to switch to
1383  * Returns: 0 on success, -1 on failure
1384  *
1385  * This asks nl80211 to set the regulatory domain for given
1386  * country ISO / IEC alpha2.
1387  */
1388 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1389 {
1390         struct i802_bss *bss = priv;
1391         struct wpa_driver_nl80211_data *drv = bss->drv;
1392         char alpha2[3];
1393         struct nl_msg *msg;
1394
1395         msg = nlmsg_alloc();
1396         if (!msg)
1397                 return -ENOMEM;
1398
1399         alpha2[0] = alpha2_arg[0];
1400         alpha2[1] = alpha2_arg[1];
1401         alpha2[2] = '\0';
1402
1403         nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
1404
1405         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1406         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1407                 return -EINVAL;
1408         return 0;
1409 nla_put_failure:
1410         nlmsg_free(msg);
1411         return -EINVAL;
1412 }
1413
1414
1415 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1416 {
1417         char *alpha2 = arg;
1418         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1419         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1420
1421         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1422                   genlmsg_attrlen(gnlh, 0), NULL);
1423         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1424                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1425                 return NL_SKIP;
1426         }
1427         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1428         return NL_SKIP;
1429 }
1430
1431
1432 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1433 {
1434         struct i802_bss *bss = priv;
1435         struct wpa_driver_nl80211_data *drv = bss->drv;
1436         struct nl_msg *msg;
1437         int ret;
1438
1439         msg = nlmsg_alloc();
1440         if (!msg)
1441                 return -ENOMEM;
1442
1443         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1444         alpha2[0] = '\0';
1445         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1446         if (!alpha2[0])
1447                 ret = -1;
1448
1449         return ret;
1450 }
1451
1452
1453 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1454 {
1455         int ret;
1456
1457         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1458         if (global->nl_cb == NULL) {
1459                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1460                            "callbacks");
1461                 return -1;
1462         }
1463
1464         global->nl = nl_create_handle(global->nl_cb, "nl");
1465         if (global->nl == NULL)
1466                 goto err;
1467
1468         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1469         if (global->nl80211_id < 0) {
1470                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1471                            "found");
1472                 goto err;
1473         }
1474
1475         global->nl_event = nl_create_handle(global->nl_cb, "event");
1476         if (global->nl_event == NULL)
1477                 goto err;
1478
1479         ret = nl_get_multicast_id(global, "nl80211", "scan");
1480         if (ret >= 0)
1481                 ret = nl_socket_add_membership(global->nl_event, ret);
1482         if (ret < 0) {
1483                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1484                            "membership for scan events: %d (%s)",
1485                            ret, strerror(-ret));
1486                 goto err;
1487         }
1488
1489         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1490         if (ret >= 0)
1491                 ret = nl_socket_add_membership(global->nl_event, ret);
1492         if (ret < 0) {
1493                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1494                            "membership for mlme events: %d (%s)",
1495                            ret, strerror(-ret));
1496                 goto err;
1497         }
1498
1499         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1500         if (ret >= 0)
1501                 ret = nl_socket_add_membership(global->nl_event, ret);
1502         if (ret < 0) {
1503                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1504                            "membership for regulatory events: %d (%s)",
1505                            ret, strerror(-ret));
1506                 /* Continue without regulatory events */
1507         }
1508
1509         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1510         if (ret >= 0)
1511                 ret = nl_socket_add_membership(global->nl_event, ret);
1512         if (ret < 0) {
1513                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1514                            "membership for vendor events: %d (%s)",
1515                            ret, strerror(-ret));
1516                 /* Continue without vendor events */
1517         }
1518
1519         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1520                   no_seq_check, NULL);
1521         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1522                   process_global_event, global);
1523
1524         nl80211_register_eloop_read(&global->nl_event,
1525                                     wpa_driver_nl80211_event_receive,
1526                                     global->nl_cb);
1527
1528         return 0;
1529
1530 err:
1531         nl_destroy_handles(&global->nl_event);
1532         nl_destroy_handles(&global->nl);
1533         nl_cb_put(global->nl_cb);
1534         global->nl_cb = NULL;
1535         return -1;
1536 }
1537
1538
1539 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1540 {
1541         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1542         if (!drv->nl_cb) {
1543                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
1544                 return -1;
1545         }
1546
1547         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1548                   no_seq_check, NULL);
1549         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1550                   process_drv_event, drv);
1551
1552         return 0;
1553 }
1554
1555
1556 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1557 {
1558         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1559         /*
1560          * This may be for any interface; use ifdown event to disable
1561          * interface.
1562          */
1563 }
1564
1565
1566 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1567 {
1568         struct wpa_driver_nl80211_data *drv = ctx;
1569         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1570         if (i802_set_iface_flags(drv->first_bss, 1)) {
1571                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1572                            "after rfkill unblock");
1573                 return;
1574         }
1575         /* rtnetlink ifup handler will report interface as enabled */
1576 }
1577
1578
1579 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1580                                                       void *eloop_ctx,
1581                                                       void *handle)
1582 {
1583         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1584         u8 data[2048];
1585         struct msghdr msg;
1586         struct iovec entry;
1587         u8 control[512];
1588         struct cmsghdr *cmsg;
1589         int res, found_ee = 0, found_wifi = 0, acked = 0;
1590         union wpa_event_data event;
1591
1592         memset(&msg, 0, sizeof(msg));
1593         msg.msg_iov = &entry;
1594         msg.msg_iovlen = 1;
1595         entry.iov_base = data;
1596         entry.iov_len = sizeof(data);
1597         msg.msg_control = &control;
1598         msg.msg_controllen = sizeof(control);
1599
1600         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1601         /* if error or not fitting 802.3 header, return */
1602         if (res < 14)
1603                 return;
1604
1605         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1606         {
1607                 if (cmsg->cmsg_level == SOL_SOCKET &&
1608                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1609                         int *ack;
1610
1611                         found_wifi = 1;
1612                         ack = (void *)CMSG_DATA(cmsg);
1613                         acked = *ack;
1614                 }
1615
1616                 if (cmsg->cmsg_level == SOL_PACKET &&
1617                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1618                         struct sock_extended_err *err =
1619                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1620
1621                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1622                                 found_ee = 1;
1623                 }
1624         }
1625
1626         if (!found_ee || !found_wifi)
1627                 return;
1628
1629         memset(&event, 0, sizeof(event));
1630         event.eapol_tx_status.dst = data;
1631         event.eapol_tx_status.data = data + 14;
1632         event.eapol_tx_status.data_len = res - 14;
1633         event.eapol_tx_status.ack = acked;
1634         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1635 }
1636
1637
1638 static int nl80211_init_bss(struct i802_bss *bss)
1639 {
1640         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1641         if (!bss->nl_cb)
1642                 return -1;
1643
1644         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1645                   no_seq_check, NULL);
1646         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1647                   process_bss_event, bss);
1648
1649         return 0;
1650 }
1651
1652
1653 static void nl80211_destroy_bss(struct i802_bss *bss)
1654 {
1655         nl_cb_put(bss->nl_cb);
1656         bss->nl_cb = NULL;
1657 }
1658
1659
1660 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1661                                           void *global_priv, int hostapd,
1662                                           const u8 *set_addr)
1663 {
1664         struct wpa_driver_nl80211_data *drv;
1665         struct rfkill_config *rcfg;
1666         struct i802_bss *bss;
1667
1668         if (global_priv == NULL)
1669                 return NULL;
1670         drv = os_zalloc(sizeof(*drv));
1671         if (drv == NULL)
1672                 return NULL;
1673         drv->global = global_priv;
1674         drv->ctx = ctx;
1675         drv->hostapd = !!hostapd;
1676         drv->eapol_sock = -1;
1677         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1678         drv->if_indices = drv->default_if_indices;
1679
1680         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1681         if (!drv->first_bss) {
1682                 os_free(drv);
1683                 return NULL;
1684         }
1685         bss = drv->first_bss;
1686         bss->drv = drv;
1687         bss->ctx = ctx;
1688
1689         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1690         drv->monitor_ifidx = -1;
1691         drv->monitor_sock = -1;
1692         drv->eapol_tx_sock = -1;
1693         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1694
1695         if (wpa_driver_nl80211_init_nl(drv)) {
1696                 os_free(drv);
1697                 return NULL;
1698         }
1699
1700         if (nl80211_init_bss(bss))
1701                 goto failed;
1702
1703         rcfg = os_zalloc(sizeof(*rcfg));
1704         if (rcfg == NULL)
1705                 goto failed;
1706         rcfg->ctx = drv;
1707         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1708         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1709         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1710         drv->rfkill = rfkill_init(rcfg);
1711         if (drv->rfkill == NULL) {
1712                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1713                 os_free(rcfg);
1714         }
1715
1716         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1717                 drv->start_iface_up = 1;
1718
1719         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1))
1720                 goto failed;
1721
1722         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1723         if (drv->eapol_tx_sock < 0)
1724                 goto failed;
1725
1726         if (drv->data_tx_status) {
1727                 int enabled = 1;
1728
1729                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1730                                &enabled, sizeof(enabled)) < 0) {
1731                         wpa_printf(MSG_DEBUG,
1732                                 "nl80211: wifi status sockopt failed\n");
1733                         drv->data_tx_status = 0;
1734                         if (!drv->use_monitor)
1735                                 drv->capa.flags &=
1736                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1737                 } else {
1738                         eloop_register_read_sock(drv->eapol_tx_sock,
1739                                 wpa_driver_nl80211_handle_eapol_tx_status,
1740                                 drv, NULL);
1741                 }
1742         }
1743
1744         if (drv->global) {
1745                 dl_list_add(&drv->global->interfaces, &drv->list);
1746                 drv->in_interface_list = 1;
1747         }
1748
1749         return bss;
1750
1751 failed:
1752         wpa_driver_nl80211_deinit(bss);
1753         return NULL;
1754 }
1755
1756
1757 /**
1758  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1759  * @ctx: context to be used when calling wpa_supplicant functions,
1760  * e.g., wpa_supplicant_event()
1761  * @ifname: interface name, e.g., wlan0
1762  * @global_priv: private driver global data from global_init()
1763  * Returns: Pointer to private data, %NULL on failure
1764  */
1765 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1766                                       void *global_priv)
1767 {
1768         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL);
1769 }
1770
1771
1772 static int nl80211_register_frame(struct i802_bss *bss,
1773                                   struct nl_handle *nl_handle,
1774                                   u16 type, const u8 *match, size_t match_len)
1775 {
1776         struct wpa_driver_nl80211_data *drv = bss->drv;
1777         struct nl_msg *msg;
1778         int ret = -1;
1779         char buf[30];
1780
1781         msg = nlmsg_alloc();
1782         if (!msg)
1783                 return -1;
1784
1785         buf[0] = '\0';
1786         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1787         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1788                    type, fc2str(type), nl_handle, buf);
1789
1790         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
1791
1792         if (nl80211_set_iface_id(msg, bss) < 0)
1793                 goto nla_put_failure;
1794
1795         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1796         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1797
1798         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1799         msg = NULL;
1800         if (ret) {
1801                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1802                            "failed (type=%u): ret=%d (%s)",
1803                            type, ret, strerror(-ret));
1804                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1805                             match, match_len);
1806                 goto nla_put_failure;
1807         }
1808         ret = 0;
1809 nla_put_failure:
1810         nlmsg_free(msg);
1811         return ret;
1812 }
1813
1814
1815 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1816 {
1817         struct wpa_driver_nl80211_data *drv = bss->drv;
1818
1819         if (bss->nl_mgmt) {
1820                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1821                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1822                 return -1;
1823         }
1824
1825         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
1826         if (bss->nl_mgmt == NULL)
1827                 return -1;
1828
1829         return 0;
1830 }
1831
1832
1833 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1834 {
1835         nl80211_register_eloop_read(&bss->nl_mgmt,
1836                                     wpa_driver_nl80211_event_receive,
1837                                     bss->nl_cb);
1838 }
1839
1840
1841 static int nl80211_register_action_frame(struct i802_bss *bss,
1842                                          const u8 *match, size_t match_len)
1843 {
1844         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1845         return nl80211_register_frame(bss, bss->nl_mgmt,
1846                                       type, match, match_len);
1847 }
1848
1849
1850 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1851 {
1852         struct wpa_driver_nl80211_data *drv = bss->drv;
1853         int ret = 0;
1854
1855         if (nl80211_alloc_mgmt_handle(bss))
1856                 return -1;
1857         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1858                    "handle %p", bss->nl_mgmt);
1859
1860         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1861                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1862
1863                 /* register for any AUTH message */
1864                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1865         }
1866
1867 #ifdef CONFIG_INTERWORKING
1868         /* QoS Map Configure */
1869         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1870                 ret = -1;
1871 #endif /* CONFIG_INTERWORKING */
1872 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1873         /* GAS Initial Request */
1874         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1875                 ret = -1;
1876         /* GAS Initial Response */
1877         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1878                 ret = -1;
1879         /* GAS Comeback Request */
1880         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1881                 ret = -1;
1882         /* GAS Comeback Response */
1883         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1884                 ret = -1;
1885         /* Protected GAS Initial Request */
1886         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1887                 ret = -1;
1888         /* Protected GAS Initial Response */
1889         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1890                 ret = -1;
1891         /* Protected GAS Comeback Request */
1892         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1893                 ret = -1;
1894         /* Protected GAS Comeback Response */
1895         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1896                 ret = -1;
1897 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1898 #ifdef CONFIG_P2P
1899         /* P2P Public Action */
1900         if (nl80211_register_action_frame(bss,
1901                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1902                                           6) < 0)
1903                 ret = -1;
1904         /* P2P Action */
1905         if (nl80211_register_action_frame(bss,
1906                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1907                                           5) < 0)
1908                 ret = -1;
1909 #endif /* CONFIG_P2P */
1910 #ifdef CONFIG_IEEE80211W
1911         /* SA Query Response */
1912         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1913                 ret = -1;
1914 #endif /* CONFIG_IEEE80211W */
1915 #ifdef CONFIG_TDLS
1916         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1917                 /* TDLS Discovery Response */
1918                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1919                     0)
1920                         ret = -1;
1921         }
1922 #endif /* CONFIG_TDLS */
1923
1924         /* FT Action frames */
1925         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1926                 ret = -1;
1927         else
1928                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1929                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1930
1931         /* WNM - BSS Transition Management Request */
1932         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1933                 ret = -1;
1934         /* WNM-Sleep Mode Response */
1935         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1936                 ret = -1;
1937
1938 #ifdef CONFIG_HS20
1939         /* WNM-Notification */
1940         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1941                 ret = -1;
1942 #endif /* CONFIG_HS20 */
1943
1944         /* WMM-AC ADDTS Response */
1945         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1946                 return -1;
1947
1948         /* WMM-AC DELTS */
1949         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1950                 return -1;
1951
1952         /* Radio Measurement - Neighbor Report Response */
1953         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1954                 ret = -1;
1955
1956         /* Radio Measurement - Link Measurement Request */
1957         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1958             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1959                 ret = -1;
1960
1961         nl80211_mgmt_handle_register_eloop(bss);
1962
1963         return ret;
1964 }
1965
1966
1967 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1968 {
1969         int ret = 0;
1970
1971         if (nl80211_alloc_mgmt_handle(bss))
1972                 return -1;
1973
1974         wpa_printf(MSG_DEBUG,
1975                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1976                    bss->nl_mgmt);
1977
1978         /* Auth frames for mesh SAE */
1979         if (nl80211_register_frame(bss, bss->nl_mgmt,
1980                                    (WLAN_FC_TYPE_MGMT << 2) |
1981                                    (WLAN_FC_STYPE_AUTH << 4),
1982                                    NULL, 0) < 0)
1983                 ret = -1;
1984
1985         /* Mesh peering open */
1986         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1987                 ret = -1;
1988         /* Mesh peering confirm */
1989         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1990                 ret = -1;
1991         /* Mesh peering close */
1992         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1993                 ret = -1;
1994
1995         nl80211_mgmt_handle_register_eloop(bss);
1996
1997         return ret;
1998 }
1999
2000
2001 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2002 {
2003         struct wpa_driver_nl80211_data *drv = bss->drv;
2004         struct nl_msg *msg;
2005         int ret = -1;
2006
2007         msg = nlmsg_alloc();
2008         if (!msg)
2009                 return -1;
2010
2011         nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
2012
2013         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
2014
2015         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
2016         msg = NULL;
2017         if (ret) {
2018                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2019                            "failed: ret=%d (%s)",
2020                            ret, strerror(-ret));
2021                 goto nla_put_failure;
2022         }
2023         ret = 0;
2024 nla_put_failure:
2025         nlmsg_free(msg);
2026         return ret;
2027 }
2028
2029
2030 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2031 {
2032         static const int stypes[] = {
2033                 WLAN_FC_STYPE_AUTH,
2034                 WLAN_FC_STYPE_ASSOC_REQ,
2035                 WLAN_FC_STYPE_REASSOC_REQ,
2036                 WLAN_FC_STYPE_DISASSOC,
2037                 WLAN_FC_STYPE_DEAUTH,
2038                 WLAN_FC_STYPE_ACTION,
2039                 WLAN_FC_STYPE_PROBE_REQ,
2040 /* Beacon doesn't work as mac80211 doesn't currently allow
2041  * it, but it wouldn't really be the right thing anyway as
2042  * it isn't per interface ... maybe just dump the scan
2043  * results periodically for OLBC?
2044  */
2045                 /* WLAN_FC_STYPE_BEACON, */
2046         };
2047         unsigned int i;
2048
2049         if (nl80211_alloc_mgmt_handle(bss))
2050                 return -1;
2051         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2052                    "handle %p", bss->nl_mgmt);
2053
2054         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2055                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2056                                            (WLAN_FC_TYPE_MGMT << 2) |
2057                                            (stypes[i] << 4),
2058                                            NULL, 0) < 0) {
2059                         goto out_err;
2060                 }
2061         }
2062
2063         if (nl80211_register_spurious_class3(bss))
2064                 goto out_err;
2065
2066         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2067                 goto out_err;
2068
2069         nl80211_mgmt_handle_register_eloop(bss);
2070         return 0;
2071
2072 out_err:
2073         nl_destroy_handles(&bss->nl_mgmt);
2074         return -1;
2075 }
2076
2077
2078 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2079 {
2080         if (nl80211_alloc_mgmt_handle(bss))
2081                 return -1;
2082         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2083                    "handle %p (device SME)", bss->nl_mgmt);
2084
2085         if (nl80211_register_frame(bss, bss->nl_mgmt,
2086                                    (WLAN_FC_TYPE_MGMT << 2) |
2087                                    (WLAN_FC_STYPE_ACTION << 4),
2088                                    NULL, 0) < 0)
2089                 goto out_err;
2090
2091         nl80211_mgmt_handle_register_eloop(bss);
2092         return 0;
2093
2094 out_err:
2095         nl_destroy_handles(&bss->nl_mgmt);
2096         return -1;
2097 }
2098
2099
2100 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2101 {
2102         if (bss->nl_mgmt == NULL)
2103                 return;
2104         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2105                    "(%s)", bss->nl_mgmt, reason);
2106         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2107
2108         nl80211_put_wiphy_data_ap(bss);
2109 }
2110
2111
2112 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2113 {
2114         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2115 }
2116
2117
2118 static void nl80211_del_p2pdev(struct i802_bss *bss)
2119 {
2120         struct wpa_driver_nl80211_data *drv = bss->drv;
2121         struct nl_msg *msg;
2122         int ret;
2123
2124         msg = nlmsg_alloc();
2125         if (!msg)
2126                 return;
2127
2128         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
2129         NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2130
2131         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2132         msg = NULL;
2133
2134         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2135                    bss->ifname, (long long unsigned int) bss->wdev_id,
2136                    strerror(-ret));
2137
2138 nla_put_failure:
2139         nlmsg_free(msg);
2140 }
2141
2142
2143 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2144 {
2145         struct wpa_driver_nl80211_data *drv = bss->drv;
2146         struct nl_msg *msg;
2147         int ret = -1;
2148
2149         msg = nlmsg_alloc();
2150         if (!msg)
2151                 return -1;
2152
2153         if (start)
2154                 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_P2P_DEVICE);
2155         else
2156                 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_P2P_DEVICE);
2157
2158         NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2159
2160         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2161         msg = NULL;
2162
2163         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2164                    start ? "Start" : "Stop",
2165                    bss->ifname, (long long unsigned int) bss->wdev_id,
2166                    strerror(-ret));
2167
2168 nla_put_failure:
2169         nlmsg_free(msg);
2170         return ret;
2171 }
2172
2173
2174 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2175 {
2176         enum nl80211_iftype nlmode;
2177
2178         nlmode = nl80211_get_ifmode(bss);
2179         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2180                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2181                                              bss->ifname, up);
2182         }
2183
2184         /* P2P Device has start/stop which is equivalent */
2185         return nl80211_set_p2pdev(bss, up);
2186 }
2187
2188
2189 static int
2190 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2191                                    const u8 *set_addr, int first)
2192 {
2193         struct i802_bss *bss = drv->first_bss;
2194         int send_rfkill_event = 0;
2195         enum nl80211_iftype nlmode;
2196
2197         drv->ifindex = if_nametoindex(bss->ifname);
2198         bss->ifindex = drv->ifindex;
2199         bss->wdev_id = drv->global->if_add_wdevid;
2200         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2201
2202         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2203         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2204         drv->global->if_add_wdevid_set = 0;
2205
2206         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2207                 bss->static_ap = 1;
2208
2209         if (wpa_driver_nl80211_capa(drv))
2210                 return -1;
2211
2212         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2213                    bss->ifname, drv->phyname);
2214
2215         if (set_addr &&
2216             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2217              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2218                                 set_addr)))
2219                 return -1;
2220
2221         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2222                 drv->start_mode_ap = 1;
2223
2224         if (drv->hostapd || bss->static_ap)
2225                 nlmode = NL80211_IFTYPE_AP;
2226         else if (bss->if_dynamic)
2227                 nlmode = nl80211_get_ifmode(bss);
2228         else
2229                 nlmode = NL80211_IFTYPE_STATION;
2230
2231         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2232                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2233                 return -1;
2234         }
2235
2236         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2237                 nl80211_get_macaddr(bss);
2238
2239         if (!rfkill_is_blocked(drv->rfkill)) {
2240                 int ret = i802_set_iface_flags(bss, 1);
2241                 if (ret) {
2242                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2243                                    "interface '%s' UP", bss->ifname);
2244                         return ret;
2245                 }
2246                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2247                         return ret;
2248         } else {
2249                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2250                            "interface '%s' due to rfkill", bss->ifname);
2251                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2252                         return 0;
2253                 drv->if_disabled = 1;
2254                 send_rfkill_event = 1;
2255         }
2256
2257         if (!drv->hostapd)
2258                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2259                                        1, IF_OPER_DORMANT);
2260
2261         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2262                                bss->addr))
2263                 return -1;
2264         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2265
2266         if (send_rfkill_event) {
2267                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2268                                        drv, drv->ctx);
2269         }
2270
2271         return 0;
2272 }
2273
2274
2275 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2276 {
2277         struct nl_msg *msg;
2278
2279         msg = nlmsg_alloc();
2280         if (!msg)
2281                 return -ENOMEM;
2282
2283         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2284                    drv->ifindex);
2285         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
2286         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2287
2288         return send_and_recv_msgs(drv, msg, NULL, NULL);
2289  nla_put_failure:
2290         nlmsg_free(msg);
2291         return -ENOBUFS;
2292 }
2293
2294
2295 /**
2296  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2297  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2298  *
2299  * Shut down driver interface and processing of driver events. Free
2300  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2301  */
2302 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2303 {
2304         struct wpa_driver_nl80211_data *drv = bss->drv;
2305
2306         bss->in_deinit = 1;
2307         if (drv->data_tx_status)
2308                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2309         if (drv->eapol_tx_sock >= 0)
2310                 close(drv->eapol_tx_sock);
2311
2312         if (bss->nl_preq)
2313                 wpa_driver_nl80211_probe_req_report(bss, 0);
2314         if (bss->added_if_into_bridge) {
2315                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2316                                     bss->ifname) < 0)
2317                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2318                                    "interface %s from bridge %s: %s",
2319                                    bss->ifname, bss->brname, strerror(errno));
2320                 if (drv->rtnl_sk)
2321                         nl80211_handle_destroy(drv->rtnl_sk);
2322         }
2323         if (bss->added_bridge) {
2324                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2325                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2326                                    "bridge %s: %s",
2327                                    bss->brname, strerror(errno));
2328         }
2329
2330         nl80211_remove_monitor_interface(drv);
2331
2332         if (is_ap_interface(drv->nlmode))
2333                 wpa_driver_nl80211_del_beacon(drv);
2334
2335         if (drv->eapol_sock >= 0) {
2336                 eloop_unregister_read_sock(drv->eapol_sock);
2337                 close(drv->eapol_sock);
2338         }
2339
2340         if (drv->if_indices != drv->default_if_indices)
2341                 os_free(drv->if_indices);
2342
2343         if (drv->disabled_11b_rates)
2344                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2345
2346         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2347                                IF_OPER_UP);
2348         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2349         rfkill_deinit(drv->rfkill);
2350
2351         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2352
2353         if (!drv->start_iface_up)
2354                 (void) i802_set_iface_flags(bss, 0);
2355
2356         if (drv->addr_changed) {
2357                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2358                                           0) < 0) {
2359                         wpa_printf(MSG_DEBUG,
2360                                    "nl80211: Could not set interface down to restore permanent MAC address");
2361                 }
2362                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2363                                        drv->perm_addr) < 0) {
2364                         wpa_printf(MSG_DEBUG,
2365                                    "nl80211: Could not restore permanent MAC address");
2366                 }
2367         }
2368
2369         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2370                 if (!drv->hostapd || !drv->start_mode_ap)
2371                         wpa_driver_nl80211_set_mode(bss,
2372                                                     NL80211_IFTYPE_STATION);
2373                 nl80211_mgmt_unsubscribe(bss, "deinit");
2374         } else {
2375                 nl80211_mgmt_unsubscribe(bss, "deinit");
2376                 nl80211_del_p2pdev(bss);
2377         }
2378         nl_cb_put(drv->nl_cb);
2379
2380         nl80211_destroy_bss(drv->first_bss);
2381
2382         os_free(drv->filter_ssids);
2383
2384         os_free(drv->auth_ie);
2385
2386         if (drv->in_interface_list)
2387                 dl_list_del(&drv->list);
2388
2389         os_free(drv->extended_capa);
2390         os_free(drv->extended_capa_mask);
2391         os_free(drv->first_bss);
2392         os_free(drv);
2393 }
2394
2395
2396 /**
2397  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2398  * @eloop_ctx: Driver private data
2399  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2400  *
2401  * This function can be used as registered timeout when starting a scan to
2402  * generate a scan completed event if the driver does not report this.
2403  */
2404 void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2405 {
2406         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2407         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2408                 wpa_driver_nl80211_set_mode(drv->first_bss,
2409                                             drv->ap_scan_as_station);
2410                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2411         }
2412         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2413         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2414 }
2415
2416
2417 static struct nl_msg *
2418 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
2419                     struct wpa_driver_scan_params *params, u64 *wdev_id)
2420 {
2421         struct nl_msg *msg;
2422         size_t i;
2423         u32 scan_flags = 0;
2424
2425         msg = nlmsg_alloc();
2426         if (!msg)
2427                 return NULL;
2428
2429         nl80211_cmd(drv, msg, 0, cmd);
2430
2431         if (!wdev_id)
2432                 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2433         else
2434                 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id);
2435
2436         if (params->num_ssids) {
2437                 struct nlattr *ssids;
2438
2439                 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
2440                 if (ssids == NULL)
2441                         goto fail;
2442                 for (i = 0; i < params->num_ssids; i++) {
2443                         wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2444                                           params->ssids[i].ssid,
2445                                           params->ssids[i].ssid_len);
2446                         if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
2447                                     params->ssids[i].ssid) < 0)
2448                                 goto fail;
2449                 }
2450                 nla_nest_end(msg, ssids);
2451         }
2452
2453         if (params->extra_ies) {
2454                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2455                             params->extra_ies, params->extra_ies_len);
2456                 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
2457                             params->extra_ies) < 0)
2458                         goto fail;
2459         }
2460
2461         if (params->freqs) {
2462                 struct nlattr *freqs;
2463                 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
2464                 if (freqs == NULL)
2465                         goto fail;
2466                 for (i = 0; params->freqs[i]; i++) {
2467                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2468                                    "MHz", params->freqs[i]);
2469                         if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0)
2470                                 goto fail;
2471                 }
2472                 nla_nest_end(msg, freqs);
2473         }
2474
2475         os_free(drv->filter_ssids);
2476         drv->filter_ssids = params->filter_ssids;
2477         params->filter_ssids = NULL;
2478         drv->num_filter_ssids = params->num_filter_ssids;
2479
2480         if (params->only_new_results) {
2481                 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH");
2482                 scan_flags |= NL80211_SCAN_FLAG_FLUSH;
2483         }
2484
2485         if (params->low_priority && drv->have_low_prio_scan) {
2486                 wpa_printf(MSG_DEBUG,
2487                            "nl80211: Add NL80211_SCAN_FLAG_LOW_PRIORITY");
2488                 scan_flags |= NL80211_SCAN_FLAG_LOW_PRIORITY;
2489         }
2490
2491         if (scan_flags)
2492                 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags);
2493
2494         return msg;
2495
2496 fail:
2497 nla_put_failure:
2498         nlmsg_free(msg);
2499         return NULL;
2500 }
2501
2502
2503 /**
2504  * wpa_driver_nl80211_scan - Request the driver to initiate scan
2505  * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
2506  * @params: Scan parameters
2507  * Returns: 0 on success, -1 on failure
2508  */
2509 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
2510                                    struct wpa_driver_scan_params *params)
2511 {
2512         struct wpa_driver_nl80211_data *drv = bss->drv;
2513         int ret = -1, timeout;
2514         struct nl_msg *msg = NULL;
2515
2516         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
2517         drv->scan_for_auth = 0;
2518
2519         msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
2520                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2521         if (!msg)
2522                 return -1;
2523
2524         if (params->p2p_probe) {
2525                 struct nlattr *rates;
2526
2527                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
2528
2529                 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
2530                 if (rates == NULL)
2531                         goto nla_put_failure;
2532
2533                 /*
2534                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2535                  * by masking out everything else apart from the OFDM rates 6,
2536                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2537                  * rates are left enabled.
2538                  */
2539                 NLA_PUT(msg, NL80211_BAND_2GHZ, 8,
2540                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
2541                 nla_nest_end(msg, rates);
2542
2543                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
2544         }
2545
2546         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2547         msg = NULL;
2548         if (ret) {
2549                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2550                            "(%s)", ret, strerror(-ret));
2551                 if (drv->hostapd && is_ap_interface(drv->nlmode)) {
2552                         enum nl80211_iftype old_mode = drv->nlmode;
2553
2554                         /*
2555                          * mac80211 does not allow scan requests in AP mode, so
2556                          * try to do this in station mode.
2557                          */
2558                         if (wpa_driver_nl80211_set_mode(
2559                                     bss, NL80211_IFTYPE_STATION))
2560                                 goto nla_put_failure;
2561
2562                         if (wpa_driver_nl80211_scan(bss, params)) {
2563                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2564                                 goto nla_put_failure;
2565                         }
2566
2567                         /* Restore AP mode when processing scan results */
2568                         drv->ap_scan_as_station = old_mode;
2569                         ret = 0;
2570                 } else
2571                         goto nla_put_failure;
2572         }
2573
2574         drv->scan_state = SCAN_REQUESTED;
2575         /* Not all drivers generate "scan completed" wireless event, so try to
2576          * read results after a timeout. */
2577         timeout = 10;
2578         if (drv->scan_complete_events) {
2579                 /*
2580                  * The driver seems to deliver events to notify when scan is
2581                  * complete, so use longer timeout to avoid race conditions
2582                  * with scanning and following association request.
2583                  */
2584                 timeout = 30;
2585         }
2586         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2587                    "seconds", ret, timeout);
2588         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2589         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2590                                drv, drv->ctx);
2591
2592 nla_put_failure:
2593         nlmsg_free(msg);
2594         return ret;
2595 }
2596
2597
2598 /**
2599  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2600  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2601  * @params: Scan parameters
2602  * @interval: Interval between scan cycles in milliseconds
2603  * Returns: 0 on success, -1 on failure or if not supported
2604  */
2605 static int wpa_driver_nl80211_sched_scan(void *priv,
2606                                          struct wpa_driver_scan_params *params,
2607                                          u32 interval)
2608 {
2609         struct i802_bss *bss = priv;
2610         struct wpa_driver_nl80211_data *drv = bss->drv;
2611         int ret = -1;
2612         struct nl_msg *msg;
2613         size_t i;
2614
2615         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
2616
2617 #ifdef ANDROID
2618         if (!drv->capa.sched_scan_supported)
2619                 return android_pno_start(bss, params);
2620 #endif /* ANDROID */
2621
2622         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
2623                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2624         if (!msg)
2625                 goto nla_put_failure;
2626
2627         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
2628
2629         if ((drv->num_filter_ssids &&
2630             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
2631             params->filter_rssi) {
2632                 struct nlattr *match_sets;
2633                 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
2634                 if (match_sets == NULL)
2635                         goto nla_put_failure;
2636
2637                 for (i = 0; i < drv->num_filter_ssids; i++) {
2638                         struct nlattr *match_set_ssid;
2639                         wpa_hexdump_ascii(MSG_MSGDUMP,
2640                                           "nl80211: Sched scan filter SSID",
2641                                           drv->filter_ssids[i].ssid,
2642                                           drv->filter_ssids[i].ssid_len);
2643
2644                         match_set_ssid = nla_nest_start(msg, i + 1);
2645                         if (match_set_ssid == NULL)
2646                                 goto nla_put_failure;
2647                         NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2648                                 drv->filter_ssids[i].ssid_len,
2649                                 drv->filter_ssids[i].ssid);
2650                         if (params->filter_rssi)
2651                                 NLA_PUT_U32(msg,
2652                                             NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2653                                             params->filter_rssi);
2654
2655                         nla_nest_end(msg, match_set_ssid);
2656                 }
2657
2658                 /*
2659                  * Due to backward compatibility code, newer kernels treat this
2660                  * matchset (with only an RSSI filter) as the default for all
2661                  * other matchsets, unless it's the only one, in which case the
2662                  * matchset will actually allow all SSIDs above the RSSI.
2663                  */
2664                 if (params->filter_rssi) {
2665                         struct nlattr *match_set_rssi;
2666                         match_set_rssi = nla_nest_start(msg, 0);
2667                         if (match_set_rssi == NULL)
2668                                 goto nla_put_failure;
2669                         NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2670                                     params->filter_rssi);
2671                         wpa_printf(MSG_MSGDUMP,
2672                                    "nl80211: Sched scan RSSI filter %d dBm",
2673                                    params->filter_rssi);
2674                         nla_nest_end(msg, match_set_rssi);
2675                 }
2676
2677                 nla_nest_end(msg, match_sets);
2678         }
2679
2680         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2681
2682         /* TODO: if we get an error here, we should fall back to normal scan */
2683
2684         msg = NULL;
2685         if (ret) {
2686                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2687                            "ret=%d (%s)", ret, strerror(-ret));
2688                 goto nla_put_failure;
2689         }
2690
2691         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2692                    "scan interval %d msec", ret, interval);
2693
2694 nla_put_failure:
2695         nlmsg_free(msg);
2696         return ret;
2697 }
2698
2699
2700 /**
2701  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2702  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2703  * Returns: 0 on success, -1 on failure or if not supported
2704  */
2705 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2706 {
2707         struct i802_bss *bss = priv;
2708         struct wpa_driver_nl80211_data *drv = bss->drv;
2709         int ret = 0;
2710         struct nl_msg *msg;
2711
2712 #ifdef ANDROID
2713         if (!drv->capa.sched_scan_supported)
2714                 return android_pno_stop(bss);
2715 #endif /* ANDROID */
2716
2717         msg = nlmsg_alloc();
2718         if (!msg)
2719                 return -1;
2720
2721         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
2722
2723         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2724
2725         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2726         msg = NULL;
2727         if (ret) {
2728                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
2729                            "ret=%d (%s)", ret, strerror(-ret));
2730                 goto nla_put_failure;
2731         }
2732
2733         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
2734
2735 nla_put_failure:
2736         nlmsg_free(msg);
2737         return ret;
2738 }
2739
2740
2741 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2742 {
2743         const u8 *end, *pos;
2744
2745         if (ies == NULL)
2746                 return NULL;
2747
2748         pos = ies;
2749         end = ies + ies_len;
2750
2751         while (pos + 1 < end) {
2752                 if (pos + 2 + pos[1] > end)
2753                         break;
2754                 if (pos[0] == ie)
2755                         return pos;
2756                 pos += 2 + pos[1];
2757         }
2758
2759         return NULL;
2760 }
2761
2762
2763 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2764                                  const u8 *ie, size_t ie_len)
2765 {
2766         const u8 *ssid;
2767         size_t i;
2768
2769         if (drv->filter_ssids == NULL)
2770                 return 0;
2771
2772         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2773         if (ssid == NULL)
2774                 return 1;
2775
2776         for (i = 0; i < drv->num_filter_ssids; i++) {
2777                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2778                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2779                     0)
2780                         return 0;
2781         }
2782
2783         return 1;
2784 }
2785
2786
2787 static int bss_info_handler(struct nl_msg *msg, void *arg)
2788 {
2789         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2790         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2791         struct nlattr *bss[NL80211_BSS_MAX + 1];
2792         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2793                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2794                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2795                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2796                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2797                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2798                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2799                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2800                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2801                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2802                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2803                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2804         };
2805         struct nl80211_bss_info_arg *_arg = arg;
2806         struct wpa_scan_results *res = _arg->res;
2807         struct wpa_scan_res **tmp;
2808         struct wpa_scan_res *r;
2809         const u8 *ie, *beacon_ie;
2810         size_t ie_len, beacon_ie_len;
2811         u8 *pos;
2812         size_t i;
2813
2814         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2815                   genlmsg_attrlen(gnlh, 0), NULL);
2816         if (!tb[NL80211_ATTR_BSS])
2817                 return NL_SKIP;
2818         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2819                              bss_policy))
2820                 return NL_SKIP;
2821         if (bss[NL80211_BSS_STATUS]) {
2822                 enum nl80211_bss_status status;
2823                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2824                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2825                     bss[NL80211_BSS_FREQUENCY]) {
2826                         _arg->assoc_freq =
2827                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2828                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2829                                    _arg->assoc_freq);
2830                 }
2831                 if (status == NL80211_BSS_STATUS_IBSS_JOINED &&
2832                     bss[NL80211_BSS_FREQUENCY]) {
2833                         _arg->ibss_freq =
2834                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2835                         wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz",
2836                                    _arg->ibss_freq);
2837                 }
2838                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2839                     bss[NL80211_BSS_BSSID]) {
2840                         os_memcpy(_arg->assoc_bssid,
2841                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2842                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2843                                    MACSTR, MAC2STR(_arg->assoc_bssid));
2844                 }
2845         }
2846         if (!res)
2847                 return NL_SKIP;
2848         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2849                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2850                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2851         } else {
2852                 ie = NULL;
2853                 ie_len = 0;
2854         }
2855         if (bss[NL80211_BSS_BEACON_IES]) {
2856                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2857                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2858         } else {
2859                 beacon_ie = NULL;
2860                 beacon_ie_len = 0;
2861         }
2862
2863         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2864                                   ie ? ie_len : beacon_ie_len))
2865                 return NL_SKIP;
2866
2867         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2868         if (r == NULL)
2869                 return NL_SKIP;
2870         if (bss[NL80211_BSS_BSSID])
2871                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2872                           ETH_ALEN);
2873         if (bss[NL80211_BSS_FREQUENCY])
2874                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2875         if (bss[NL80211_BSS_BEACON_INTERVAL])
2876                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2877         if (bss[NL80211_BSS_CAPABILITY])
2878                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2879         r->flags |= WPA_SCAN_NOISE_INVALID;
2880         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2881                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2882                 r->level /= 100; /* mBm to dBm */
2883                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2884         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2885                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2886                 r->flags |= WPA_SCAN_QUAL_INVALID;
2887         } else
2888                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2889         if (bss[NL80211_BSS_TSF])
2890                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2891         if (bss[NL80211_BSS_SEEN_MS_AGO])
2892                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2893         r->ie_len = ie_len;
2894         pos = (u8 *) (r + 1);
2895         if (ie) {
2896                 os_memcpy(pos, ie, ie_len);
2897                 pos += ie_len;
2898         }
2899         r->beacon_ie_len = beacon_ie_len;
2900         if (beacon_ie)
2901                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2902
2903         if (bss[NL80211_BSS_STATUS]) {
2904                 enum nl80211_bss_status status;
2905                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2906                 switch (status) {
2907                 case NL80211_BSS_STATUS_AUTHENTICATED:
2908                         r->flags |= WPA_SCAN_AUTHENTICATED;
2909                         break;
2910                 case NL80211_BSS_STATUS_ASSOCIATED:
2911                         r->flags |= WPA_SCAN_ASSOCIATED;
2912                         break;
2913                 default:
2914                         break;
2915                 }
2916         }
2917
2918         /*
2919          * cfg80211 maintains separate BSS table entries for APs if the same
2920          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
2921          * not use frequency as a separate key in the BSS table, so filter out
2922          * duplicated entries. Prefer associated BSS entry in such a case in
2923          * order to get the correct frequency into the BSS table. Similarly,
2924          * prefer newer entries over older.
2925          */
2926         for (i = 0; i < res->num; i++) {
2927                 const u8 *s1, *s2;
2928                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
2929                         continue;
2930
2931                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
2932                                     res->res[i]->ie_len, WLAN_EID_SSID);
2933                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
2934                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
2935                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
2936                         continue;
2937
2938                 /* Same BSSID,SSID was already included in scan results */
2939                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
2940                            "for " MACSTR, MAC2STR(r->bssid));
2941
2942                 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
2943                      !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
2944                     r->age < res->res[i]->age) {
2945                         os_free(res->res[i]);
2946                         res->res[i] = r;
2947                 } else
2948                         os_free(r);
2949                 return NL_SKIP;
2950         }
2951
2952         tmp = os_realloc_array(res->res, res->num + 1,
2953                                sizeof(struct wpa_scan_res *));
2954         if (tmp == NULL) {
2955                 os_free(r);
2956                 return NL_SKIP;
2957         }
2958         tmp[res->num++] = r;
2959         res->res = tmp;
2960
2961         return NL_SKIP;
2962 }
2963
2964
2965 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2966                                  const u8 *addr)
2967 {
2968         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2969                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2970                            "mismatch (" MACSTR ")", MAC2STR(addr));
2971                 wpa_driver_nl80211_mlme(drv, addr,
2972                                         NL80211_CMD_DEAUTHENTICATE,
2973                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2974         }
2975 }
2976
2977
2978 static void wpa_driver_nl80211_check_bss_status(
2979         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2980 {
2981         size_t i;
2982
2983         for (i = 0; i < res->num; i++) {
2984                 struct wpa_scan_res *r = res->res[i];
2985                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2986                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2987                                    "indicates BSS status with " MACSTR
2988                                    " as authenticated",
2989                                    MAC2STR(r->bssid));
2990                         if (is_sta_interface(drv->nlmode) &&
2991                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2992                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2993                             0) {
2994                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2995                                            " in local state (auth=" MACSTR
2996                                            " assoc=" MACSTR ")",
2997                                            MAC2STR(drv->auth_bssid),
2998                                            MAC2STR(drv->bssid));
2999                                 clear_state_mismatch(drv, r->bssid);
3000                         }
3001                 }
3002
3003                 if (r->flags & WPA_SCAN_ASSOCIATED) {
3004                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3005                                    "indicate BSS status with " MACSTR
3006                                    " as associated",
3007                                    MAC2STR(r->bssid));
3008                         if (is_sta_interface(drv->nlmode) &&
3009                             !drv->associated) {
3010                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3011                                            "(not associated) does not match "
3012                                            "with BSS state");
3013                                 clear_state_mismatch(drv, r->bssid);
3014                         } else if (is_sta_interface(drv->nlmode) &&
3015                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3016                                    0) {
3017                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3018                                            "(associated with " MACSTR ") does "
3019                                            "not match with BSS state",
3020                                            MAC2STR(drv->bssid));
3021                                 clear_state_mismatch(drv, r->bssid);
3022                                 clear_state_mismatch(drv, drv->bssid);
3023                         }
3024                 }
3025         }
3026 }
3027
3028
3029 static struct wpa_scan_results *
3030 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3031 {
3032         struct nl_msg *msg;
3033         struct wpa_scan_results *res;
3034         int ret;
3035         struct nl80211_bss_info_arg arg;
3036
3037         res = os_zalloc(sizeof(*res));
3038         if (res == NULL)
3039                 return NULL;
3040         msg = nlmsg_alloc();
3041         if (!msg)
3042                 goto nla_put_failure;
3043
3044         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3045         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
3046                 goto nla_put_failure;
3047
3048         arg.drv = drv;
3049         arg.res = res;
3050         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3051         msg = NULL;
3052         if (ret == 0) {
3053                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3054                            "BSSes)", (unsigned long) res->num);
3055                 nl80211_get_noise_for_scan_results(drv, res);
3056                 return res;
3057         }
3058         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3059                    "(%s)", ret, strerror(-ret));
3060 nla_put_failure:
3061         nlmsg_free(msg);
3062         wpa_scan_results_free(res);
3063         return NULL;
3064 }
3065
3066
3067 /**
3068  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3069  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3070  * Returns: Scan results on success, -1 on failure
3071  */
3072 static struct wpa_scan_results *
3073 wpa_driver_nl80211_get_scan_results(void *priv)
3074 {
3075         struct i802_bss *bss = priv;
3076         struct wpa_driver_nl80211_data *drv = bss->drv;
3077         struct wpa_scan_results *res;
3078
3079         res = nl80211_get_scan_results(drv);
3080         if (res)
3081                 wpa_driver_nl80211_check_bss_status(drv, res);
3082         return res;
3083 }
3084
3085
3086 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3087 {
3088         struct wpa_scan_results *res;
3089         size_t i;
3090
3091         res = nl80211_get_scan_results(drv);
3092         if (res == NULL) {
3093                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3094                 return;
3095         }
3096
3097         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3098         for (i = 0; i < res->num; i++) {
3099                 struct wpa_scan_res *r = res->res[i];
3100                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3101                            (int) i, (int) res->num, MAC2STR(r->bssid),
3102                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3103                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3104         }
3105
3106         wpa_scan_results_free(res);
3107 }
3108
3109
3110 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
3111 {
3112         switch (alg) {
3113         case WPA_ALG_WEP:
3114                 if (key_len == 5)
3115                         return WLAN_CIPHER_SUITE_WEP40;
3116                 return WLAN_CIPHER_SUITE_WEP104;
3117         case WPA_ALG_TKIP:
3118                 return WLAN_CIPHER_SUITE_TKIP;
3119         case WPA_ALG_CCMP:
3120                 return WLAN_CIPHER_SUITE_CCMP;
3121         case WPA_ALG_GCMP:
3122                 return WLAN_CIPHER_SUITE_GCMP;
3123         case WPA_ALG_CCMP_256:
3124                 return WLAN_CIPHER_SUITE_CCMP_256;
3125         case WPA_ALG_GCMP_256:
3126                 return WLAN_CIPHER_SUITE_GCMP_256;
3127         case WPA_ALG_IGTK:
3128                 return WLAN_CIPHER_SUITE_AES_CMAC;
3129         case WPA_ALG_BIP_GMAC_128:
3130                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
3131         case WPA_ALG_BIP_GMAC_256:
3132                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
3133         case WPA_ALG_BIP_CMAC_256:
3134                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
3135         case WPA_ALG_SMS4:
3136                 return WLAN_CIPHER_SUITE_SMS4;
3137         case WPA_ALG_KRK:
3138                 return WLAN_CIPHER_SUITE_KRK;
3139         case WPA_ALG_NONE:
3140         case WPA_ALG_PMK:
3141                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
3142                            alg);
3143                 return 0;
3144         }
3145
3146         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
3147                    alg);
3148         return 0;
3149 }
3150
3151
3152 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
3153 {
3154         switch (cipher) {
3155         case WPA_CIPHER_CCMP_256:
3156                 return WLAN_CIPHER_SUITE_CCMP_256;
3157         case WPA_CIPHER_GCMP_256:
3158                 return WLAN_CIPHER_SUITE_GCMP_256;
3159         case WPA_CIPHER_CCMP:
3160                 return WLAN_CIPHER_SUITE_CCMP;
3161         case WPA_CIPHER_GCMP:
3162                 return WLAN_CIPHER_SUITE_GCMP;
3163         case WPA_CIPHER_TKIP:
3164                 return WLAN_CIPHER_SUITE_TKIP;
3165         case WPA_CIPHER_WEP104:
3166                 return WLAN_CIPHER_SUITE_WEP104;
3167         case WPA_CIPHER_WEP40:
3168                 return WLAN_CIPHER_SUITE_WEP40;
3169         case WPA_CIPHER_GTK_NOT_USED:
3170                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
3171         }
3172
3173         return 0;
3174 }
3175
3176
3177 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
3178                                        int max_suites)
3179 {
3180         int num_suites = 0;
3181
3182         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
3183                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
3184         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
3185                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
3186         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
3187                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
3188         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
3189                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
3190         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
3191                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
3192         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
3193                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
3194         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
3195                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
3196
3197         return num_suites;
3198 }
3199
3200
3201 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
3202                                   const u8 *key, size_t key_len)
3203 {
3204         struct nl_msg *msg;
3205         int ret = 0;
3206
3207         if (!drv->key_mgmt_set_key_vendor_cmd_avail)
3208                 return 0;
3209
3210         msg = nlmsg_alloc();
3211         if (!msg)
3212                 return -1;
3213
3214         nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
3215         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3216         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
3217         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
3218                     QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY);
3219         NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, key_len, key);
3220         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3221         msg = NULL;
3222         if (ret) {
3223                 wpa_printf(MSG_DEBUG,
3224                            "nl80211: Key management set key failed: ret=%d (%s)",
3225                            ret, strerror(-ret));
3226         }
3227
3228 nla_put_failure:
3229         nlmsg_free(msg);
3230         return ret;
3231 }
3232
3233
3234 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
3235                                       enum wpa_alg alg, const u8 *addr,
3236                                       int key_idx, int set_tx,
3237                                       const u8 *seq, size_t seq_len,
3238                                       const u8 *key, size_t key_len)
3239 {
3240         struct wpa_driver_nl80211_data *drv = bss->drv;
3241         int ifindex;
3242         struct nl_msg *msg;
3243         int ret;
3244         int tdls = 0;
3245
3246         /* Ignore for P2P Device */
3247         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
3248                 return 0;
3249
3250         ifindex = if_nametoindex(ifname);
3251         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
3252                    "set_tx=%d seq_len=%lu key_len=%lu",
3253                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
3254                    (unsigned long) seq_len, (unsigned long) key_len);
3255 #ifdef CONFIG_TDLS
3256         if (key_idx == -1) {
3257                 key_idx = 0;
3258                 tdls = 1;
3259         }
3260 #endif /* CONFIG_TDLS */
3261
3262         if (alg == WPA_ALG_PMK && drv->key_mgmt_set_key_vendor_cmd_avail) {
3263                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
3264                            __func__);
3265                 ret = issue_key_mgmt_set_key(drv, key, key_len);
3266                 return ret;
3267         }
3268
3269         msg = nlmsg_alloc();
3270         if (!msg)
3271                 return -ENOMEM;
3272
3273         if (alg == WPA_ALG_NONE) {
3274                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3275         } else {
3276                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3277                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3278                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
3279                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3280                             wpa_alg_to_cipher_suite(alg, key_len));
3281         }
3282
3283         if (seq && seq_len) {
3284                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3285                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
3286         }
3287
3288         if (addr && !is_broadcast_ether_addr(addr)) {
3289                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
3290                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3291
3292                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3293                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
3294                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3295                                     NL80211_KEYTYPE_GROUP);
3296                 }
3297         } else if (addr && is_broadcast_ether_addr(addr)) {
3298                 struct nlattr *types;
3299
3300                 wpa_printf(MSG_DEBUG, "   broadcast key");
3301
3302                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3303                 if (!types)
3304                         goto nla_put_failure;
3305                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3306                 nla_nest_end(msg, types);
3307         }
3308         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3309         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3310
3311         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3312         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3313                 ret = 0;
3314         if (ret)
3315                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3316                            ret, strerror(-ret));
3317
3318         /*
3319          * If we failed or don't need to set the default TX key (below),
3320          * we're done here.
3321          */
3322         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
3323                 return ret;
3324         if (is_ap_interface(drv->nlmode) && addr &&
3325             !is_broadcast_ether_addr(addr))
3326                 return ret;
3327
3328         msg = nlmsg_alloc();
3329         if (!msg)
3330                 return -ENOMEM;
3331
3332         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
3333         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3334         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3335         if (alg == WPA_ALG_IGTK)
3336                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
3337         else
3338                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3339         if (addr && is_broadcast_ether_addr(addr)) {
3340                 struct nlattr *types;
3341
3342                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3343                 if (!types)
3344                         goto nla_put_failure;
3345                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3346                 nla_nest_end(msg, types);
3347         } else if (addr) {
3348                 struct nlattr *types;
3349
3350                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3351                 if (!types)
3352                         goto nla_put_failure;
3353                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST);
3354                 nla_nest_end(msg, types);
3355         }
3356
3357         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3358         if (ret == -ENOENT)
3359                 ret = 0;
3360         if (ret)
3361                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3362                            "err=%d %s)", ret, strerror(-ret));
3363         return ret;
3364
3365 nla_put_failure:
3366         nlmsg_free(msg);
3367         return -ENOBUFS;
3368 }
3369
3370
3371 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3372                       int key_idx, int defkey,
3373                       const u8 *seq, size_t seq_len,
3374                       const u8 *key, size_t key_len)
3375 {
3376         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3377         if (!key_attr)
3378                 return -1;
3379
3380         if (defkey && alg == WPA_ALG_IGTK)
3381                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
3382         else if (defkey)
3383                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3384
3385         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
3386
3387         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3388                     wpa_alg_to_cipher_suite(alg, key_len));
3389
3390         if (seq && seq_len)
3391                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
3392
3393         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
3394
3395         nla_nest_end(msg, key_attr);
3396
3397         return 0;
3398  nla_put_failure:
3399         return -1;
3400 }
3401
3402
3403 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3404                                  struct nl_msg *msg)
3405 {
3406         int i, privacy = 0;
3407         struct nlattr *nl_keys, *nl_key;
3408
3409         for (i = 0; i < 4; i++) {
3410                 if (!params->wep_key[i])
3411                         continue;
3412                 privacy = 1;
3413                 break;
3414         }
3415         if (params->wps == WPS_MODE_PRIVACY)
3416                 privacy = 1;
3417         if (params->pairwise_suite &&
3418             params->pairwise_suite != WPA_CIPHER_NONE)
3419                 privacy = 1;
3420
3421         if (!privacy)
3422                 return 0;
3423
3424         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
3425
3426         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3427         if (!nl_keys)
3428                 goto nla_put_failure;
3429
3430         for (i = 0; i < 4; i++) {
3431                 if (!params->wep_key[i])
3432                         continue;
3433
3434                 nl_key = nla_nest_start(msg, i);
3435                 if (!nl_key)
3436                         goto nla_put_failure;
3437
3438                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3439                         params->wep_key[i]);
3440                 if (params->wep_key_len[i] == 5)
3441                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3442                                     WLAN_CIPHER_SUITE_WEP40);
3443                 else
3444                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3445                                     WLAN_CIPHER_SUITE_WEP104);
3446
3447                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
3448
3449                 if (i == params->wep_tx_keyidx)
3450                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3451
3452                 nla_nest_end(msg, nl_key);
3453         }
3454         nla_nest_end(msg, nl_keys);
3455
3456         return 0;
3457
3458 nla_put_failure:
3459         return -ENOBUFS;
3460 }
3461
3462
3463 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3464                                    const u8 *addr, int cmd, u16 reason_code,
3465                                    int local_state_change)
3466 {
3467         int ret = -1;
3468         struct nl_msg *msg;
3469
3470         msg = nlmsg_alloc();
3471         if (!msg)
3472                 return -1;
3473
3474         nl80211_cmd(drv, msg, 0, cmd);
3475
3476         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3477         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
3478         if (addr)
3479                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3480         if (local_state_change)
3481                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3482
3483         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3484         msg = NULL;
3485         if (ret) {
3486                 wpa_dbg(drv->ctx, MSG_DEBUG,
3487                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
3488                         reason_code, ret, strerror(-ret));
3489                 goto nla_put_failure;
3490         }
3491         ret = 0;
3492
3493 nla_put_failure:
3494         nlmsg_free(msg);
3495         return ret;
3496 }
3497
3498
3499 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3500                                          int reason_code)
3501 {
3502         int ret;
3503
3504         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
3505         nl80211_mark_disconnected(drv);
3506         /* Disconnect command doesn't need BSSID - it uses cached value */
3507         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
3508                                       reason_code, 0);
3509         /*
3510          * For locally generated disconnect, supplicant already generates a
3511          * DEAUTH event, so ignore the event from NL80211.
3512          */
3513         drv->ignore_next_local_disconnect = ret == 0;
3514
3515         return ret;
3516 }
3517
3518
3519 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
3520                                              const u8 *addr, int reason_code)
3521 {
3522         struct wpa_driver_nl80211_data *drv = bss->drv;
3523         int ret;
3524
3525         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
3526                 nl80211_mark_disconnected(drv);
3527                 return nl80211_leave_ibss(drv);
3528         }
3529         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3530                 return wpa_driver_nl80211_disconnect(drv, reason_code);
3531         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3532                    __func__, MAC2STR(addr), reason_code);
3533         nl80211_mark_disconnected(drv);
3534         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3535                                       reason_code, 0);
3536         /*
3537          * For locally generated deauthenticate, supplicant already generates a
3538          * DEAUTH event, so ignore the event from NL80211.
3539          */
3540         drv->ignore_next_local_deauth = ret == 0;
3541         return ret;
3542 }
3543
3544
3545 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
3546                                      struct wpa_driver_auth_params *params)
3547 {
3548         int i;
3549
3550         drv->auth_freq = params->freq;
3551         drv->auth_alg = params->auth_alg;
3552         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
3553         drv->auth_local_state_change = params->local_state_change;
3554         drv->auth_p2p = params->p2p;
3555
3556         if (params->bssid)
3557                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
3558         else
3559                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
3560
3561         if (params->ssid) {
3562                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
3563                 drv->auth_ssid_len = params->ssid_len;
3564         } else
3565                 drv->auth_ssid_len = 0;
3566
3567
3568         os_free(drv->auth_ie);
3569         drv->auth_ie = NULL;
3570         drv->auth_ie_len = 0;
3571         if (params->ie) {
3572                 drv->auth_ie = os_malloc(params->ie_len);
3573                 if (drv->auth_ie) {
3574                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
3575                         drv->auth_ie_len = params->ie_len;
3576                 }
3577         }
3578
3579         for (i = 0; i < 4; i++) {
3580                 if (params->wep_key[i] && params->wep_key_len[i] &&
3581                     params->wep_key_len[i] <= 16) {
3582                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
3583                                   params->wep_key_len[i]);
3584                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
3585                 } else
3586                         drv->auth_wep_key_len[i] = 0;
3587         }
3588 }
3589
3590
3591 static int wpa_driver_nl80211_authenticate(
3592         struct i802_bss *bss, struct wpa_driver_auth_params *params)
3593 {
3594         struct wpa_driver_nl80211_data *drv = bss->drv;
3595         int ret = -1, i;
3596         struct nl_msg *msg;
3597         enum nl80211_auth_type type;
3598         enum nl80211_iftype nlmode;
3599         int count = 0;
3600         int is_retry;
3601
3602         is_retry = drv->retry_auth;
3603         drv->retry_auth = 0;
3604         drv->ignore_deauth_event = 0;
3605
3606         nl80211_mark_disconnected(drv);
3607         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3608         if (params->bssid)
3609                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3610         else
3611                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3612         /* FIX: IBSS mode */
3613         nlmode = params->p2p ?
3614                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3615         if (drv->nlmode != nlmode &&
3616             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3617                 return -1;
3618
3619 retry:
3620         msg = nlmsg_alloc();
3621         if (!msg)
3622                 return -1;
3623
3624         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3625                    drv->ifindex);
3626
3627         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3628
3629         for (i = 0; i < 4; i++) {
3630                 if (!params->wep_key[i])
3631                         continue;
3632                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3633                                            NULL, i,
3634                                            i == params->wep_tx_keyidx, NULL, 0,
3635                                            params->wep_key[i],
3636                                            params->wep_key_len[i]);
3637                 if (params->wep_tx_keyidx != i)
3638                         continue;
3639                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3640                                params->wep_key[i], params->wep_key_len[i])) {
3641                         nlmsg_free(msg);
3642                         return -1;
3643                 }
3644         }
3645
3646         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3647         if (params->bssid) {
3648                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3649                            MAC2STR(params->bssid));
3650                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3651         }
3652         if (params->freq) {
3653                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3654                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3655         }
3656         if (params->ssid) {
3657                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3658                                   params->ssid, params->ssid_len);
3659                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3660                         params->ssid);
3661         }
3662         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3663         if (params->ie)
3664                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3665         if (params->sae_data) {
3666                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3667                             params->sae_data_len);
3668                 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3669                         params->sae_data);
3670         }
3671         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3672                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3673         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3674                 type = NL80211_AUTHTYPE_SHARED_KEY;
3675         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3676                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3677         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3678                 type = NL80211_AUTHTYPE_FT;
3679         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3680                 type = NL80211_AUTHTYPE_SAE;
3681         else
3682                 goto nla_put_failure;
3683         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3684         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3685         if (params->local_state_change) {
3686                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3687                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3688         }
3689
3690         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3691         msg = NULL;
3692         if (ret) {
3693                 wpa_dbg(drv->ctx, MSG_DEBUG,
3694                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3695                         ret, strerror(-ret));
3696                 count++;
3697                 if (ret == -EALREADY && count == 1 && params->bssid &&
3698                     !params->local_state_change) {
3699                         /*
3700                          * mac80211 does not currently accept new
3701                          * authentication if we are already authenticated. As a
3702                          * workaround, force deauthentication and try again.
3703                          */
3704                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3705                                    "after forced deauthentication");
3706                         drv->ignore_deauth_event = 1;
3707                         wpa_driver_nl80211_deauthenticate(
3708                                 bss, params->bssid,
3709                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3710                         nlmsg_free(msg);
3711                         goto retry;
3712                 }
3713
3714                 if (ret == -ENOENT && params->freq && !is_retry) {
3715                         /*
3716                          * cfg80211 has likely expired the BSS entry even
3717                          * though it was previously available in our internal
3718                          * BSS table. To recover quickly, start a single
3719                          * channel scan on the specified channel.
3720                          */
3721                         struct wpa_driver_scan_params scan;
3722                         int freqs[2];
3723
3724                         os_memset(&scan, 0, sizeof(scan));
3725                         scan.num_ssids = 1;
3726                         if (params->ssid) {
3727                                 scan.ssids[0].ssid = params->ssid;
3728                                 scan.ssids[0].ssid_len = params->ssid_len;
3729                         }
3730                         freqs[0] = params->freq;
3731                         freqs[1] = 0;
3732                         scan.freqs = freqs;
3733                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3734                                    "channel scan to refresh cfg80211 BSS "
3735                                    "entry");
3736                         ret = wpa_driver_nl80211_scan(bss, &scan);
3737                         if (ret == 0) {
3738                                 nl80211_copy_auth_params(drv, params);
3739                                 drv->scan_for_auth = 1;
3740                         }
3741                 } else if (is_retry) {
3742                         /*
3743                          * Need to indicate this with an event since the return
3744                          * value from the retry is not delivered to core code.
3745                          */
3746                         union wpa_event_data event;
3747                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3748                                    "failed");
3749                         os_memset(&event, 0, sizeof(event));
3750                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3751                                   ETH_ALEN);
3752                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3753                                              &event);
3754                 }
3755
3756                 goto nla_put_failure;
3757         }
3758         ret = 0;
3759         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3760                    "successfully");
3761
3762 nla_put_failure:
3763         nlmsg_free(msg);
3764         return ret;
3765 }
3766
3767
3768 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3769 {
3770         struct wpa_driver_auth_params params;
3771         struct i802_bss *bss = drv->first_bss;
3772         int i;
3773
3774         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3775
3776         os_memset(&params, 0, sizeof(params));
3777         params.freq = drv->auth_freq;
3778         params.auth_alg = drv->auth_alg;
3779         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3780         params.local_state_change = drv->auth_local_state_change;
3781         params.p2p = drv->auth_p2p;
3782
3783         if (!is_zero_ether_addr(drv->auth_bssid_))
3784                 params.bssid = drv->auth_bssid_;
3785
3786         if (drv->auth_ssid_len) {
3787                 params.ssid = drv->auth_ssid;
3788                 params.ssid_len = drv->auth_ssid_len;
3789         }
3790
3791         params.ie = drv->auth_ie;
3792         params.ie_len = drv->auth_ie_len;
3793
3794         for (i = 0; i < 4; i++) {
3795                 if (drv->auth_wep_key_len[i]) {
3796                         params.wep_key[i] = drv->auth_wep_key[i];
3797                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3798                 }
3799         }
3800
3801         drv->retry_auth = 1;
3802         return wpa_driver_nl80211_authenticate(bss, &params);
3803 }
3804
3805
3806 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3807                                          const void *data, size_t len,
3808                                          int encrypt, int noack,
3809                                          unsigned int freq, int no_cck,
3810                                          int offchanok, unsigned int wait_time)
3811 {
3812         struct wpa_driver_nl80211_data *drv = bss->drv;
3813         u64 cookie;
3814         int res;
3815
3816         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3817                 freq = nl80211_get_assoc_freq(drv);
3818                 wpa_printf(MSG_DEBUG,
3819                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3820                            freq);
3821         }
3822         if (freq == 0) {
3823                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3824                            bss->freq);
3825                 freq = bss->freq;
3826         }
3827
3828         if (drv->use_monitor) {
3829                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3830                            freq, bss->freq);
3831                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3832         }
3833
3834         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3835         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3836                                      &cookie, no_cck, noack, offchanok);
3837         if (res == 0 && !noack) {
3838                 const struct ieee80211_mgmt *mgmt;
3839                 u16 fc;
3840
3841                 mgmt = (const struct ieee80211_mgmt *) data;
3842                 fc = le_to_host16(mgmt->frame_control);
3843                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3844                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3845                         wpa_printf(MSG_MSGDUMP,
3846                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3847                                    (long long unsigned int)
3848                                    drv->send_action_cookie,
3849                                    (long long unsigned int) cookie);
3850                         drv->send_action_cookie = cookie;
3851                 }
3852         }
3853
3854         return res;
3855 }
3856
3857
3858 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3859                                         size_t data_len, int noack,
3860                                         unsigned int freq, int no_cck,
3861                                         int offchanok,
3862                                         unsigned int wait_time)
3863 {
3864         struct wpa_driver_nl80211_data *drv = bss->drv;
3865         struct ieee80211_mgmt *mgmt;
3866         int encrypt = 1;
3867         u16 fc;
3868
3869         mgmt = (struct ieee80211_mgmt *) data;
3870         fc = le_to_host16(mgmt->frame_control);
3871         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3872                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3873                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3874                    fc, fc2str(fc), drv->nlmode);
3875
3876         if ((is_sta_interface(drv->nlmode) ||
3877              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3878             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3879             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3880                 /*
3881                  * The use of last_mgmt_freq is a bit of a hack,
3882                  * but it works due to the single-threaded nature
3883                  * of wpa_supplicant.
3884                  */
3885                 if (freq == 0) {
3886                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3887                                    drv->last_mgmt_freq);
3888                         freq = drv->last_mgmt_freq;
3889                 }
3890                 return nl80211_send_frame_cmd(bss, freq, 0,
3891                                               data, data_len, NULL, 1, noack,
3892                                               1);
3893         }
3894
3895         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3896                 if (freq == 0) {
3897                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3898                                    bss->freq);
3899                         freq = bss->freq;
3900                 }
3901                 return nl80211_send_frame_cmd(bss, freq,
3902                                               (int) freq == bss->freq ? 0 :
3903                                               wait_time,
3904                                               data, data_len,
3905                                               &drv->send_action_cookie,
3906                                               no_cck, noack, offchanok);
3907         }
3908
3909         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3910             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3911                 /*
3912                  * Only one of the authentication frame types is encrypted.
3913                  * In order for static WEP encryption to work properly (i.e.,
3914                  * to not encrypt the frame), we need to tell mac80211 about
3915                  * the frames that must not be encrypted.
3916                  */
3917                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3918                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3919                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3920                         encrypt = 0;
3921         }
3922
3923         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3924         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3925                                              noack, freq, no_cck, offchanok,
3926                                              wait_time);
3927 }
3928
3929
3930 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3931                            int slot, int ht_opmode, int ap_isolate,
3932                            int *basic_rates)
3933 {
3934         struct wpa_driver_nl80211_data *drv = bss->drv;
3935         struct nl_msg *msg;
3936
3937         msg = nlmsg_alloc();
3938         if (!msg)
3939                 return -ENOMEM;
3940
3941         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
3942
3943         if (cts >= 0)
3944                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3945         if (preamble >= 0)
3946                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3947         if (slot >= 0)
3948                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3949         if (ht_opmode >= 0)
3950                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
3951         if (ap_isolate >= 0)
3952                 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
3953
3954         if (basic_rates) {
3955                 u8 rates[NL80211_MAX_SUPP_RATES];
3956                 u8 rates_len = 0;
3957                 int i;
3958
3959                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
3960                      i++)
3961                         rates[rates_len++] = basic_rates[i] / 5;
3962
3963                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3964         }
3965
3966         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3967
3968         return send_and_recv_msgs(drv, msg, NULL, NULL);
3969  nla_put_failure:
3970         nlmsg_free(msg);
3971         return -ENOBUFS;
3972 }
3973
3974
3975 static int wpa_driver_nl80211_set_acl(void *priv,
3976                                       struct hostapd_acl_params *params)
3977 {
3978         struct i802_bss *bss = priv;
3979         struct wpa_driver_nl80211_data *drv = bss->drv;
3980         struct nl_msg *msg;
3981         struct nlattr *acl;
3982         unsigned int i;
3983         int ret = 0;
3984
3985         if (!(drv->capa.max_acl_mac_addrs))
3986                 return -ENOTSUP;
3987
3988         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3989                 return -ENOTSUP;
3990
3991         msg = nlmsg_alloc();
3992         if (!msg)
3993                 return -ENOMEM;
3994
3995         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3996                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3997
3998         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL);
3999
4000         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4001
4002         NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
4003                     NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
4004                     NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED);
4005
4006         acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
4007         if (acl == NULL)
4008                 goto nla_put_failure;
4009
4010         for (i = 0; i < params->num_mac_acl; i++)
4011                 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr);
4012
4013         nla_nest_end(msg, acl);
4014
4015         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4016         msg = NULL;
4017         if (ret) {
4018                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
4019                            ret, strerror(-ret));
4020         }
4021
4022 nla_put_failure:
4023         nlmsg_free(msg);
4024
4025         return ret;
4026 }
4027
4028
4029 static int wpa_driver_nl80211_set_ap(void *priv,
4030                                      struct wpa_driver_ap_params *params)
4031 {
4032         struct i802_bss *bss = priv;
4033         struct wpa_driver_nl80211_data *drv = bss->drv;
4034         struct nl_msg *msg;
4035         u8 cmd = NL80211_CMD_NEW_BEACON;
4036         int ret;
4037         int beacon_set;
4038         int ifindex = if_nametoindex(bss->ifname);
4039         int num_suites;
4040         int smps_mode;
4041         u32 suites[10], suite;
4042         u32 ver;
4043
4044         beacon_set = bss->beacon_set;
4045
4046         msg = nlmsg_alloc();
4047         if (!msg)
4048                 return -ENOMEM;
4049
4050         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4051                    beacon_set);
4052         if (beacon_set)
4053                 cmd = NL80211_CMD_SET_BEACON;
4054
4055         nl80211_cmd(drv, msg, 0, cmd);
4056         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
4057                     params->head, params->head_len);
4058         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
4059         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
4060                     params->tail, params->tail_len);
4061         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
4062         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
4063         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4064         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
4065         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
4066         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
4067         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
4068         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
4069                           params->ssid, params->ssid_len);
4070         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4071                 params->ssid);
4072         if (params->proberesp && params->proberesp_len) {
4073                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
4074                             params->proberesp, params->proberesp_len);
4075                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
4076                         params->proberesp);
4077         }
4078         switch (params->hide_ssid) {
4079         case NO_SSID_HIDING:
4080                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
4081                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4082                             NL80211_HIDDEN_SSID_NOT_IN_USE);
4083                 break;
4084         case HIDDEN_SSID_ZERO_LEN:
4085                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
4086                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4087                             NL80211_HIDDEN_SSID_ZERO_LEN);
4088                 break;
4089         case HIDDEN_SSID_ZERO_CONTENTS:
4090                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
4091                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4092                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
4093                 break;
4094         }
4095         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
4096         if (params->privacy)
4097                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4098         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
4099         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4100             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4101                 /* Leave out the attribute */
4102         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
4103                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4104                             NL80211_AUTHTYPE_SHARED_KEY);
4105         else
4106                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4107                             NL80211_AUTHTYPE_OPEN_SYSTEM);
4108
4109         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
4110         ver = 0;
4111         if (params->wpa_version & WPA_PROTO_WPA)
4112                 ver |= NL80211_WPA_VERSION_1;
4113         if (params->wpa_version & WPA_PROTO_RSN)
4114                 ver |= NL80211_WPA_VERSION_2;
4115         if (ver)
4116                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4117
4118         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
4119                    params->key_mgmt_suites);
4120         num_suites = 0;
4121         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4122                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4123         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4124                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4125         if (num_suites) {
4126                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
4127                         num_suites * sizeof(u32), suites);
4128         }
4129
4130         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
4131             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
4132                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
4133
4134         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
4135                    params->pairwise_ciphers);
4136         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
4137                                                  suites, ARRAY_SIZE(suites));
4138         if (num_suites) {
4139                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4140                         num_suites * sizeof(u32), suites);
4141         }
4142
4143         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
4144                    params->group_cipher);
4145         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
4146         if (suite)
4147                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite);
4148
4149         switch (params->smps_mode) {
4150         case HT_CAP_INFO_SMPS_DYNAMIC:
4151                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
4152                 smps_mode = NL80211_SMPS_DYNAMIC;
4153                 break;
4154         case HT_CAP_INFO_SMPS_STATIC:
4155                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
4156                 smps_mode = NL80211_SMPS_STATIC;
4157                 break;
4158         default:
4159                 /* invalid - fallback to smps off */
4160         case HT_CAP_INFO_SMPS_DISABLED:
4161                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
4162                 smps_mode = NL80211_SMPS_OFF;
4163                 break;
4164         }
4165         NLA_PUT_U32(msg, NL80211_ATTR_SMPS_MODE, smps_mode);
4166
4167         if (params->beacon_ies) {
4168                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
4169                                 params->beacon_ies);
4170                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
4171                         wpabuf_head(params->beacon_ies));
4172         }
4173         if (params->proberesp_ies) {
4174                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
4175                                 params->proberesp_ies);
4176                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
4177                         wpabuf_len(params->proberesp_ies),
4178                         wpabuf_head(params->proberesp_ies));
4179         }
4180         if (params->assocresp_ies) {
4181                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
4182                                 params->assocresp_ies);
4183                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
4184                         wpabuf_len(params->assocresp_ies),
4185                         wpabuf_head(params->assocresp_ies));
4186         }
4187
4188         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
4189                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
4190                            params->ap_max_inactivity);
4191                 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
4192                             params->ap_max_inactivity);
4193         }
4194
4195         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4196         if (ret) {
4197                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4198                            ret, strerror(-ret));
4199         } else {
4200                 bss->beacon_set = 1;
4201                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4202                                 params->short_slot_time, params->ht_opmode,
4203                                 params->isolate, params->basic_rates);
4204                 if (beacon_set && params->freq &&
4205                     params->freq->bandwidth != bss->bandwidth) {
4206                         wpa_printf(MSG_DEBUG,
4207                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
4208                                    bss->ifname, bss->bandwidth,
4209                                    params->freq->bandwidth);
4210                         ret = nl80211_set_channel(bss, params->freq, 1);
4211                         if (ret) {
4212                                 wpa_printf(MSG_DEBUG,
4213                                            "nl80211: Frequency set failed: %d (%s)",
4214                                            ret, strerror(-ret));
4215                         } else {
4216                                 wpa_printf(MSG_DEBUG,
4217                                            "nl80211: Frequency set succeeded for ht2040 coex");
4218                                 bss->bandwidth = params->freq->bandwidth;
4219                         }
4220                 } else if (!beacon_set) {
4221                         /*
4222                          * cfg80211 updates the driver on frequence change in AP
4223                          * mode only at the point when beaconing is started, so
4224                          * set the initial value here.
4225                          */
4226                         bss->bandwidth = params->freq->bandwidth;
4227                 }
4228         }
4229         return ret;
4230  nla_put_failure:
4231         nlmsg_free(msg);
4232         return -ENOBUFS;
4233 }
4234
4235
4236 static int nl80211_put_freq_params(struct nl_msg *msg,
4237                                    struct hostapd_freq_params *freq)
4238 {
4239         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
4240         if (freq->vht_enabled) {
4241                 switch (freq->bandwidth) {
4242                 case 20:
4243                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4244                                     NL80211_CHAN_WIDTH_20);
4245                         break;
4246                 case 40:
4247                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4248                                     NL80211_CHAN_WIDTH_40);
4249                         break;
4250                 case 80:
4251                         if (freq->center_freq2)
4252                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4253                                             NL80211_CHAN_WIDTH_80P80);
4254                         else
4255                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4256                                             NL80211_CHAN_WIDTH_80);
4257                         break;
4258                 case 160:
4259                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4260                                     NL80211_CHAN_WIDTH_160);
4261                         break;
4262                 default:
4263                         return -EINVAL;
4264                 }
4265                 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
4266                 if (freq->center_freq2)
4267                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
4268                                     freq->center_freq2);
4269         } else if (freq->ht_enabled) {
4270                 switch (freq->sec_channel_offset) {
4271                 case -1:
4272                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4273                                     NL80211_CHAN_HT40MINUS);
4274                         break;
4275                 case 1:
4276                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4277                                     NL80211_CHAN_HT40PLUS);
4278                         break;
4279                 default:
4280                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4281                                     NL80211_CHAN_HT20);
4282                         break;
4283                 }
4284         }
4285         return 0;
4286
4287 nla_put_failure:
4288         return -ENOBUFS;
4289 }
4290
4291
4292 static int nl80211_set_channel(struct i802_bss *bss,
4293                                struct hostapd_freq_params *freq, int set_chan)
4294 {
4295         struct wpa_driver_nl80211_data *drv = bss->drv;
4296         struct nl_msg *msg;
4297         int ret;
4298
4299         wpa_printf(MSG_DEBUG,
4300                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
4301                    freq->freq, freq->ht_enabled, freq->vht_enabled,
4302                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
4303         msg = nlmsg_alloc();
4304         if (!msg)
4305                 return -1;
4306
4307         nl80211_cmd(drv, msg, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
4308                     NL80211_CMD_SET_WIPHY);
4309
4310         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4311         if (nl80211_put_freq_params(msg, freq) < 0)
4312                 goto nla_put_failure;
4313
4314         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4315         msg = NULL;
4316         if (ret == 0) {
4317                 bss->freq = freq->freq;
4318                 return 0;
4319         }
4320         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4321                    "%d (%s)", freq->freq, ret, strerror(-ret));
4322 nla_put_failure:
4323         nlmsg_free(msg);
4324         return -1;
4325 }
4326
4327
4328 static u32 sta_flags_nl80211(int flags)
4329 {
4330         u32 f = 0;
4331
4332         if (flags & WPA_STA_AUTHORIZED)
4333                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4334         if (flags & WPA_STA_WMM)
4335                 f |= BIT(NL80211_STA_FLAG_WME);
4336         if (flags & WPA_STA_SHORT_PREAMBLE)
4337                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4338         if (flags & WPA_STA_MFP)
4339                 f |= BIT(NL80211_STA_FLAG_MFP);
4340         if (flags & WPA_STA_TDLS_PEER)
4341                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4342         if (flags & WPA_STA_AUTHENTICATED)
4343                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4344
4345         return f;
4346 }
4347
4348
4349 #ifdef CONFIG_MESH
4350 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
4351 {
4352         switch (state) {
4353         case PLINK_LISTEN:
4354                 return NL80211_PLINK_LISTEN;
4355         case PLINK_OPEN_SENT:
4356                 return NL80211_PLINK_OPN_SNT;
4357         case PLINK_OPEN_RCVD:
4358                 return NL80211_PLINK_OPN_RCVD;
4359         case PLINK_CNF_RCVD:
4360                 return NL80211_PLINK_CNF_RCVD;
4361         case PLINK_ESTAB:
4362                 return NL80211_PLINK_ESTAB;
4363         case PLINK_HOLDING:
4364                 return NL80211_PLINK_HOLDING;
4365         case PLINK_BLOCKED:
4366                 return NL80211_PLINK_BLOCKED;
4367         default:
4368                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
4369                            state);
4370         }
4371         return -1;
4372 }
4373 #endif /* CONFIG_MESH */
4374
4375
4376 static int wpa_driver_nl80211_sta_add(void *priv,
4377                                       struct hostapd_sta_add_params *params)
4378 {
4379         struct i802_bss *bss = priv;
4380         struct wpa_driver_nl80211_data *drv = bss->drv;
4381         struct nl_msg *msg;
4382         struct nl80211_sta_flag_update upd;
4383         int ret = -ENOBUFS;
4384
4385         if ((params->flags & WPA_STA_TDLS_PEER) &&
4386             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4387                 return -EOPNOTSUPP;
4388
4389         msg = nlmsg_alloc();
4390         if (!msg)
4391                 return -ENOMEM;
4392
4393         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
4394                    params->set ? "Set" : "Add", MAC2STR(params->addr));
4395         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4396                     NL80211_CMD_NEW_STATION);
4397
4398         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4399         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
4400
4401         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
4402                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
4403                         params->supp_rates_len, params->supp_rates);
4404                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
4405                             params->supp_rates, params->supp_rates_len);
4406
4407                 if (params->ht_capabilities) {
4408                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
4409                                     (u8 *) params->ht_capabilities,
4410                                     sizeof(*params->ht_capabilities));
4411                         NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
4412                                 sizeof(*params->ht_capabilities),
4413                                 params->ht_capabilities);
4414                 }
4415
4416                 if (params->vht_capabilities) {
4417                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
4418                                     (u8 *) params->vht_capabilities,
4419                                     sizeof(*params->vht_capabilities));
4420                         NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY,
4421                                 sizeof(*params->vht_capabilities),
4422                                 params->vht_capabilities);
4423                 }
4424
4425                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
4426                            params->capability);
4427                 NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY,
4428                             params->capability);
4429
4430                 if (params->ext_capab) {
4431                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
4432                                     params->ext_capab, params->ext_capab_len);
4433                         NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
4434                                 params->ext_capab_len, params->ext_capab);
4435                 }
4436         }
4437         if (!params->set) {
4438                 if (params->aid) {
4439                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
4440                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
4441                 } else {
4442                         /*
4443                          * cfg80211 validates that AID is non-zero, so we have
4444                          * to make this a non-zero value for the TDLS case where
4445                          * a dummy STA entry is used for now.
4446                          */
4447                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
4448                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1);
4449                 }
4450                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
4451                            params->listen_interval);
4452                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4453                             params->listen_interval);
4454         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
4455                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
4456                 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid);
4457         }
4458
4459         if (params->vht_opmode_enabled) {
4460                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
4461                 NLA_PUT_U8(msg, NL80211_ATTR_OPMODE_NOTIF,
4462                            params->vht_opmode);
4463         }
4464
4465         if (params->supp_channels) {
4466                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
4467                             params->supp_channels, params->supp_channels_len);
4468                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4469                         params->supp_channels_len, params->supp_channels);
4470         }
4471
4472         if (params->supp_oper_classes) {
4473                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
4474                             params->supp_oper_classes,
4475                             params->supp_oper_classes_len);
4476                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4477                         params->supp_oper_classes_len,
4478                         params->supp_oper_classes);
4479         }
4480
4481         os_memset(&upd, 0, sizeof(upd));
4482         upd.set = sta_flags_nl80211(params->flags);
4483         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4484         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
4485                    upd.set, upd.mask);
4486         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4487
4488 #ifdef CONFIG_MESH
4489         if (params->plink_state)
4490                 NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_STATE,
4491                            sta_plink_state_nl80211(params->plink_state));
4492 #endif /* CONFIG_MESH */
4493
4494         if (params->flags & WPA_STA_WMM) {
4495                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4496
4497                 if (!wme)
4498                         goto nla_put_failure;
4499
4500                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
4501                 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4502                                 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
4503                 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP,
4504                                 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4505                                 WMM_QOSINFO_STA_SP_MASK);
4506                 nla_nest_end(msg, wme);
4507         }
4508
4509         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4510         msg = NULL;
4511         if (ret)
4512                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4513                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4514                            strerror(-ret));
4515         if (ret == -EEXIST)
4516                 ret = 0;
4517  nla_put_failure:
4518         nlmsg_free(msg);
4519         return ret;
4520 }
4521
4522
4523 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4524 {
4525 #ifdef CONFIG_LIBNL3_ROUTE
4526         struct wpa_driver_nl80211_data *drv = bss->drv;
4527         struct rtnl_neigh *rn;
4528         struct nl_addr *nl_addr;
4529         int err;
4530
4531         rn = rtnl_neigh_alloc();
4532         if (!rn)
4533                 return;
4534
4535         rtnl_neigh_set_family(rn, AF_BRIDGE);
4536         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4537         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4538         if (!nl_addr) {
4539                 rtnl_neigh_put(rn);
4540                 return;
4541         }
4542         rtnl_neigh_set_lladdr(rn, nl_addr);
4543
4544         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4545         if (err < 0) {
4546                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4547                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4548                            bss->ifindex, nl_geterror(err));
4549         } else {
4550                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4551                            MACSTR, MAC2STR(addr));
4552         }
4553
4554         nl_addr_put(nl_addr);
4555         rtnl_neigh_put(rn);
4556 #endif /* CONFIG_LIBNL3_ROUTE */
4557 }
4558
4559
4560 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4561                                          int deauth, u16 reason_code)
4562 {
4563         struct wpa_driver_nl80211_data *drv = bss->drv;
4564         struct nl_msg *msg;
4565         int ret;
4566
4567         msg = nlmsg_alloc();
4568         if (!msg)
4569                 return -ENOMEM;
4570
4571         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
4572
4573         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4574                     if_nametoindex(bss->ifname));
4575         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4576         if (deauth == 0)
4577                 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4578                            WLAN_FC_STYPE_DISASSOC);
4579         else if (deauth == 1)
4580                 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4581                            WLAN_FC_STYPE_DEAUTH);
4582         if (reason_code)
4583                 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4584
4585         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4586         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4587                    " --> %d (%s)",
4588                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4589
4590         if (drv->rtnl_sk)
4591                 rtnl_neigh_delete_fdb_entry(bss, addr);
4592
4593         if (ret == -ENOENT)
4594                 return 0;
4595         return ret;
4596  nla_put_failure:
4597         nlmsg_free(msg);
4598         return -ENOBUFS;
4599 }
4600
4601
4602 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4603 {
4604         struct nl_msg *msg;
4605         struct wpa_driver_nl80211_data *drv2;
4606
4607         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4608
4609         /* stop listening for EAPOL on this interface */
4610         dl_list_for_each(drv2, &drv->global->interfaces,
4611                          struct wpa_driver_nl80211_data, list)
4612                 del_ifidx(drv2, ifidx);
4613
4614         msg = nlmsg_alloc();
4615         if (!msg)
4616                 goto nla_put_failure;
4617
4618         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4619         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
4620
4621         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4622                 return;
4623         msg = NULL;
4624  nla_put_failure:
4625         nlmsg_free(msg);
4626         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4627 }
4628
4629
4630 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4631 {
4632         switch (mode) {
4633         case NL80211_IFTYPE_ADHOC:
4634                 return "ADHOC";
4635         case NL80211_IFTYPE_STATION:
4636                 return "STATION";
4637         case NL80211_IFTYPE_AP:
4638                 return "AP";
4639         case NL80211_IFTYPE_AP_VLAN:
4640                 return "AP_VLAN";
4641         case NL80211_IFTYPE_WDS:
4642                 return "WDS";
4643         case NL80211_IFTYPE_MONITOR:
4644                 return "MONITOR";
4645         case NL80211_IFTYPE_MESH_POINT:
4646                 return "MESH_POINT";
4647         case NL80211_IFTYPE_P2P_CLIENT:
4648                 return "P2P_CLIENT";
4649         case NL80211_IFTYPE_P2P_GO:
4650                 return "P2P_GO";
4651         case NL80211_IFTYPE_P2P_DEVICE:
4652                 return "P2P_DEVICE";
4653         default:
4654                 return "unknown";
4655         }
4656 }
4657
4658
4659 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4660                                      const char *ifname,
4661                                      enum nl80211_iftype iftype,
4662                                      const u8 *addr, int wds,
4663                                      int (*handler)(struct nl_msg *, void *),
4664                                      void *arg)
4665 {
4666         struct nl_msg *msg;
4667         int ifidx;
4668         int ret = -ENOBUFS;
4669
4670         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4671                    iftype, nl80211_iftype_str(iftype));
4672
4673         msg = nlmsg_alloc();
4674         if (!msg)
4675                 return -1;
4676
4677         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
4678         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
4679                 goto nla_put_failure;
4680         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
4681         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
4682
4683         if (iftype == NL80211_IFTYPE_MONITOR) {
4684                 struct nlattr *flags;
4685
4686                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4687                 if (!flags)
4688                         goto nla_put_failure;
4689
4690                 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES);
4691
4692                 nla_nest_end(msg, flags);
4693         } else if (wds) {
4694                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
4695         }
4696
4697         /*
4698          * Tell cfg80211 that the interface belongs to the socket that created
4699          * it, and the interface should be deleted when the socket is closed.
4700          */
4701         NLA_PUT_FLAG(msg, NL80211_ATTR_IFACE_SOCKET_OWNER);
4702
4703         ret = send_and_recv_msgs(drv, msg, handler, arg);
4704         msg = NULL;
4705         if (ret) {
4706  nla_put_failure:
4707                 nlmsg_free(msg);
4708                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4709                            ifname, ret, strerror(-ret));
4710                 return ret;
4711         }
4712
4713         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4714                 return 0;
4715
4716         ifidx = if_nametoindex(ifname);
4717         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4718                    ifname, ifidx);
4719
4720         if (ifidx <= 0)
4721                 return -1;
4722
4723         /*
4724          * Some virtual interfaces need to process EAPOL packets and events on
4725          * the parent interface. This is used mainly with hostapd.
4726          */
4727         if (drv->hostapd ||
4728             iftype == NL80211_IFTYPE_AP_VLAN ||
4729             iftype == NL80211_IFTYPE_WDS ||
4730             iftype == NL80211_IFTYPE_MONITOR) {
4731                 /* start listening for EAPOL on this interface */
4732                 add_ifidx(drv, ifidx);
4733         }
4734
4735         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4736             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4737                 nl80211_remove_iface(drv, ifidx);
4738                 return -1;
4739         }
4740
4741         return ifidx;
4742 }
4743
4744
4745 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4746                          const char *ifname, enum nl80211_iftype iftype,
4747                          const u8 *addr, int wds,
4748                          int (*handler)(struct nl_msg *, void *),
4749                          void *arg, int use_existing)
4750 {
4751         int ret;
4752
4753         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4754                                         arg);
4755
4756         /* if error occurred and interface exists already */
4757         if (ret == -ENFILE && if_nametoindex(ifname)) {
4758                 if (use_existing) {
4759                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4760                                    ifname);
4761                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4762                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4763                                                addr) < 0 &&
4764                             (linux_set_iface_flags(drv->global->ioctl_sock,
4765                                                    ifname, 0) < 0 ||
4766                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4767                                                 addr) < 0 ||
4768                              linux_set_iface_flags(drv->global->ioctl_sock,
4769                                                    ifname, 1) < 0))
4770                                         return -1;
4771                         return -ENFILE;
4772                 }
4773                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4774
4775                 /* Try to remove the interface that was already there. */
4776                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4777
4778                 /* Try to create the interface again */
4779                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4780                                                 wds, handler, arg);
4781         }
4782
4783         if (ret >= 0 && is_p2p_net_interface(iftype))
4784                 nl80211_disable_11b_rates(drv, ret, 1);
4785
4786         return ret;
4787 }
4788
4789
4790 static int nl80211_setup_ap(struct i802_bss *bss)
4791 {
4792         struct wpa_driver_nl80211_data *drv = bss->drv;
4793
4794         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4795                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4796
4797         /*
4798          * Disable Probe Request reporting unless we need it in this way for
4799          * devices that include the AP SME, in the other case (unless using
4800          * monitor iface) we'll get it through the nl_mgmt socket instead.
4801          */
4802         if (!drv->device_ap_sme)
4803                 wpa_driver_nl80211_probe_req_report(bss, 0);
4804
4805         if (!drv->device_ap_sme && !drv->use_monitor)
4806                 if (nl80211_mgmt_subscribe_ap(bss))
4807                         return -1;
4808
4809         if (drv->device_ap_sme && !drv->use_monitor)
4810                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4811                         return -1;
4812
4813         if (!drv->device_ap_sme && drv->use_monitor &&
4814             nl80211_create_monitor_interface(drv) &&
4815             !drv->device_ap_sme)
4816                 return -1;
4817
4818         if (drv->device_ap_sme &&
4819             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4820                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4821                            "Probe Request frame reporting in AP mode");
4822                 /* Try to survive without this */
4823         }
4824
4825         return 0;
4826 }
4827
4828
4829 static void nl80211_teardown_ap(struct i802_bss *bss)
4830 {
4831         struct wpa_driver_nl80211_data *drv = bss->drv;
4832
4833         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4834                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4835         if (drv->device_ap_sme) {
4836                 wpa_driver_nl80211_probe_req_report(bss, 0);
4837                 if (!drv->use_monitor)
4838                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4839         } else if (drv->use_monitor)
4840                 nl80211_remove_monitor_interface(drv);
4841         else
4842                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4843
4844         bss->beacon_set = 0;
4845 }
4846
4847
4848 static int nl80211_send_eapol_data(struct i802_bss *bss,
4849                                    const u8 *addr, const u8 *data,
4850                                    size_t data_len)
4851 {
4852         struct sockaddr_ll ll;
4853         int ret;
4854
4855         if (bss->drv->eapol_tx_sock < 0) {
4856                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4857                 return -1;
4858         }
4859
4860         os_memset(&ll, 0, sizeof(ll));
4861         ll.sll_family = AF_PACKET;
4862         ll.sll_ifindex = bss->ifindex;
4863         ll.sll_protocol = htons(ETH_P_PAE);
4864         ll.sll_halen = ETH_ALEN;
4865         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4866         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4867                      (struct sockaddr *) &ll, sizeof(ll));
4868         if (ret < 0)
4869                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4870                            strerror(errno));
4871
4872         return ret;
4873 }
4874
4875
4876 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4877
4878 static int wpa_driver_nl80211_hapd_send_eapol(
4879         void *priv, const u8 *addr, const u8 *data,
4880         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4881 {
4882         struct i802_bss *bss = priv;
4883         struct wpa_driver_nl80211_data *drv = bss->drv;
4884         struct ieee80211_hdr *hdr;
4885         size_t len;
4886         u8 *pos;
4887         int res;
4888         int qos = flags & WPA_STA_WMM;
4889
4890         if (drv->device_ap_sme || !drv->use_monitor)
4891                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4892
4893         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4894                 data_len;
4895         hdr = os_zalloc(len);
4896         if (hdr == NULL) {
4897                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4898                            (unsigned long) len);
4899                 return -1;
4900         }
4901
4902         hdr->frame_control =
4903                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4904         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4905         if (encrypt)
4906                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4907         if (qos) {
4908                 hdr->frame_control |=
4909                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4910         }
4911
4912         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4913         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4914         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4915         pos = (u8 *) (hdr + 1);
4916
4917         if (qos) {
4918                 /* Set highest priority in QoS header */
4919                 pos[0] = 7;
4920                 pos[1] = 0;
4921                 pos += 2;
4922         }
4923
4924         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4925         pos += sizeof(rfc1042_header);
4926         WPA_PUT_BE16(pos, ETH_P_PAE);
4927         pos += 2;
4928         memcpy(pos, data, data_len);
4929
4930         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4931                                             0, 0, 0, 0);
4932         if (res < 0) {
4933                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4934                            "failed: %d (%s)",
4935                            (unsigned long) len, errno, strerror(errno));
4936         }
4937         os_free(hdr);
4938
4939         return res;
4940 }
4941
4942
4943 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4944                                             int total_flags,
4945                                             int flags_or, int flags_and)
4946 {
4947         struct i802_bss *bss = priv;
4948         struct wpa_driver_nl80211_data *drv = bss->drv;
4949         struct nl_msg *msg;
4950         struct nlattr *flags;
4951         struct nl80211_sta_flag_update upd;
4952
4953         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4954                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4955                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4956                    !!(total_flags & WPA_STA_AUTHORIZED));
4957
4958         msg = nlmsg_alloc();
4959         if (!msg)
4960                 return -ENOMEM;
4961
4962         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
4963
4964         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4965                     if_nametoindex(bss->ifname));
4966         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4967
4968         /*
4969          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4970          * can be removed eventually.
4971          */
4972         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4973         if (!flags)
4974                 goto nla_put_failure;
4975         if (total_flags & WPA_STA_AUTHORIZED)
4976                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED);
4977
4978         if (total_flags & WPA_STA_WMM)
4979                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME);
4980
4981         if (total_flags & WPA_STA_SHORT_PREAMBLE)
4982                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE);
4983
4984         if (total_flags & WPA_STA_MFP)
4985                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP);
4986
4987         if (total_flags & WPA_STA_TDLS_PEER)
4988                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER);
4989
4990         nla_nest_end(msg, flags);
4991
4992         os_memset(&upd, 0, sizeof(upd));
4993         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4994         upd.set = sta_flags_nl80211(flags_or);
4995         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4996
4997         return send_and_recv_msgs(drv, msg, NULL, NULL);
4998  nla_put_failure:
4999         nlmsg_free(msg);
5000         return -ENOBUFS;
5001 }
5002
5003
5004 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
5005                                  struct wpa_driver_associate_params *params)
5006 {
5007         enum nl80211_iftype nlmode, old_mode;
5008
5009         if (params->p2p) {
5010                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
5011                            "group (GO)");
5012                 nlmode = NL80211_IFTYPE_P2P_GO;
5013         } else
5014                 nlmode = NL80211_IFTYPE_AP;
5015
5016         old_mode = drv->nlmode;
5017         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
5018                 nl80211_remove_monitor_interface(drv);
5019                 return -1;
5020         }
5021
5022         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
5023                 if (old_mode != nlmode)
5024                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
5025                 nl80211_remove_monitor_interface(drv);
5026                 return -1;
5027         }
5028
5029         return 0;
5030 }
5031
5032
5033 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5034 {
5035         struct nl_msg *msg;
5036         int ret = -1;
5037
5038         msg = nlmsg_alloc();
5039         if (!msg)
5040                 return -1;
5041
5042         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
5043         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5044         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5045         msg = NULL;
5046         if (ret) {
5047                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5048                            "(%s)", ret, strerror(-ret));
5049                 goto nla_put_failure;
5050         }
5051
5052         ret = 0;
5053         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5054
5055 nla_put_failure:
5056         if (wpa_driver_nl80211_set_mode(drv->first_bss,
5057                                         NL80211_IFTYPE_STATION)) {
5058                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5059                            "station mode");
5060         }
5061
5062         nlmsg_free(msg);
5063         return ret;
5064 }
5065
5066
5067 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5068                                    struct wpa_driver_associate_params *params)
5069 {
5070         struct nl_msg *msg;
5071         int ret = -1;
5072         int count = 0;
5073
5074         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5075
5076         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
5077                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5078                            "IBSS mode");
5079                 return -1;
5080         }
5081
5082 retry:
5083         msg = nlmsg_alloc();
5084         if (!msg)
5085                 return -1;
5086
5087         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
5088         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5089
5090         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5091                 goto nla_put_failure;
5092
5093         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5094                           params->ssid, params->ssid_len);
5095         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5096                 params->ssid);
5097         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5098         drv->ssid_len = params->ssid_len;
5099
5100         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5101         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", params->freq.ht_enabled);
5102         wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
5103                    params->freq.sec_channel_offset);
5104         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", params->freq.vht_enabled);
5105         wpa_printf(MSG_DEBUG, "  * center_freq1=%d", params->freq.center_freq1);
5106         wpa_printf(MSG_DEBUG, "  * center_freq2=%d", params->freq.center_freq2);
5107         wpa_printf(MSG_DEBUG, "  * bandwidth=%d", params->freq.bandwidth);
5108         if (nl80211_put_freq_params(msg, &params->freq) < 0)
5109                 goto nla_put_failure;
5110
5111         if (params->beacon_int > 0) {
5112                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", params->beacon_int);
5113                 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL,
5114                             params->beacon_int);
5115         }
5116
5117         ret = nl80211_set_conn_keys(params, msg);
5118         if (ret)
5119                 goto nla_put_failure;
5120
5121         if (params->bssid && params->fixed_bssid) {
5122                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
5123                            MAC2STR(params->bssid));
5124                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5125         }
5126
5127         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5128             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5129             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5130             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
5131                 wpa_printf(MSG_DEBUG, "  * control port");
5132                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5133         }
5134
5135         if (params->wpa_ie) {
5136                 wpa_hexdump(MSG_DEBUG,
5137                             "  * Extra IEs for Beacon/Probe Response frames",
5138                             params->wpa_ie, params->wpa_ie_len);
5139                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5140                         params->wpa_ie);
5141         }
5142
5143         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5144         msg = NULL;
5145         if (ret) {
5146                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5147                            ret, strerror(-ret));
5148                 count++;
5149                 if (ret == -EALREADY && count == 1) {
5150                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5151                                    "forced leave");
5152                         nl80211_leave_ibss(drv);
5153                         nlmsg_free(msg);
5154                         goto retry;
5155                 }
5156
5157                 goto nla_put_failure;
5158         }
5159         ret = 0;
5160         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
5161
5162 nla_put_failure:
5163         nlmsg_free(msg);
5164         return ret;
5165 }
5166
5167
5168 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
5169                                   struct wpa_driver_associate_params *params,
5170                                   struct nl_msg *msg)
5171 {
5172         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5173
5174         if (params->bssid) {
5175                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5176                            MAC2STR(params->bssid));
5177                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5178         }
5179
5180         if (params->bssid_hint) {
5181                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
5182                            MAC2STR(params->bssid_hint));
5183                 NLA_PUT(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
5184                         params->bssid_hint);
5185         }
5186
5187         if (params->freq.freq) {
5188                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5189                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq.freq);
5190                 drv->assoc_freq = params->freq.freq;
5191         } else
5192                 drv->assoc_freq = 0;
5193
5194         if (params->freq_hint) {
5195                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
5196                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
5197                             params->freq_hint);
5198         }
5199
5200         if (params->bg_scan_period >= 0) {
5201                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
5202                            params->bg_scan_period);
5203                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
5204                             params->bg_scan_period);
5205         }
5206
5207         if (params->ssid) {
5208                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5209                                   params->ssid, params->ssid_len);
5210                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5211                         params->ssid);
5212                 if (params->ssid_len > sizeof(drv->ssid))
5213                         goto nla_put_failure;
5214                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5215                 drv->ssid_len = params->ssid_len;
5216         }
5217
5218         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
5219         if (params->wpa_ie)
5220                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5221                         params->wpa_ie);
5222
5223         if (params->wpa_proto) {
5224                 enum nl80211_wpa_versions ver = 0;
5225
5226                 if (params->wpa_proto & WPA_PROTO_WPA)
5227                         ver |= NL80211_WPA_VERSION_1;
5228                 if (params->wpa_proto & WPA_PROTO_RSN)
5229                         ver |= NL80211_WPA_VERSION_2;
5230
5231                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
5232                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5233         }
5234
5235         if (params->pairwise_suite != WPA_CIPHER_NONE) {
5236                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
5237                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
5238                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5239         }
5240
5241         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
5242             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
5243                 /*
5244                  * This is likely to work even though many drivers do not
5245                  * advertise support for operations without GTK.
5246                  */
5247                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
5248         } else if (params->group_suite != WPA_CIPHER_NONE) {
5249                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
5250                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
5251                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5252         }
5253
5254         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5255             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5256             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
5257             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
5258             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
5259             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
5260             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5261             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5262             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
5263                 int mgmt = WLAN_AKM_SUITE_PSK;
5264
5265                 switch (params->key_mgmt_suite) {
5266                 case WPA_KEY_MGMT_CCKM:
5267                         mgmt = WLAN_AKM_SUITE_CCKM;
5268                         break;
5269                 case WPA_KEY_MGMT_IEEE8021X:
5270                         mgmt = WLAN_AKM_SUITE_8021X;
5271                         break;
5272                 case WPA_KEY_MGMT_FT_IEEE8021X:
5273                         mgmt = WLAN_AKM_SUITE_FT_8021X;
5274                         break;
5275                 case WPA_KEY_MGMT_FT_PSK:
5276                         mgmt = WLAN_AKM_SUITE_FT_PSK;
5277                         break;
5278                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
5279                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
5280                         break;
5281                 case WPA_KEY_MGMT_PSK_SHA256:
5282                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
5283                         break;
5284                 case WPA_KEY_MGMT_OSEN:
5285                         mgmt = WLAN_AKM_SUITE_OSEN;
5286                         break;
5287                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
5288                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
5289                         break;
5290                 case WPA_KEY_MGMT_PSK:
5291                 default:
5292                         mgmt = WLAN_AKM_SUITE_PSK;
5293                         break;
5294                 }
5295                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
5296                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
5297         }
5298
5299         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5300
5301         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
5302                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
5303
5304         if (params->rrm_used) {
5305                 u32 drv_rrm_flags = drv->capa.rrm_flags;
5306                 if (!(drv_rrm_flags &
5307                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
5308                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET))
5309                         goto nla_put_failure;
5310                 NLA_PUT_FLAG(msg, NL80211_ATTR_USE_RRM);
5311         }
5312
5313         if (params->disable_ht)
5314                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
5315
5316         if (params->htcaps && params->htcaps_mask) {
5317                 int sz = sizeof(struct ieee80211_ht_capabilities);
5318                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
5319                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
5320                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
5321                             params->htcaps_mask, sz);
5322                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
5323                         params->htcaps_mask);
5324         }
5325
5326 #ifdef CONFIG_VHT_OVERRIDES
5327         if (params->disable_vht) {
5328                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
5329                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
5330         }
5331
5332         if (params->vhtcaps && params->vhtcaps_mask) {
5333                 int sz = sizeof(struct ieee80211_vht_capabilities);
5334                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
5335                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
5336                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
5337                             params->vhtcaps_mask, sz);
5338                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
5339                         params->vhtcaps_mask);
5340         }
5341 #endif /* CONFIG_VHT_OVERRIDES */
5342
5343         if (params->p2p)
5344                 wpa_printf(MSG_DEBUG, "  * P2P group");
5345
5346         return 0;
5347 nla_put_failure:
5348         return -1;
5349 }
5350
5351
5352 static int wpa_driver_nl80211_try_connect(
5353         struct wpa_driver_nl80211_data *drv,
5354         struct wpa_driver_associate_params *params)
5355 {
5356         struct nl_msg *msg;
5357         enum nl80211_auth_type type;
5358         int ret;
5359         int algs;
5360
5361         if (params->req_key_mgmt_offload && params->psk &&
5362             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5363              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5364              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
5365                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
5366                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
5367                 if (ret)
5368                         return ret;
5369         }
5370
5371         msg = nlmsg_alloc();
5372         if (!msg)
5373                 return -1;
5374
5375         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5376         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5377
5378         ret = nl80211_connect_common(drv, params, msg);
5379         if (ret)
5380                 goto nla_put_failure;
5381
5382         algs = 0;
5383         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5384                 algs++;
5385         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5386                 algs++;
5387         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5388                 algs++;
5389         if (algs > 1) {
5390                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
5391                            "selection");
5392                 goto skip_auth_type;
5393         }
5394
5395         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5396                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5397         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5398                 type = NL80211_AUTHTYPE_SHARED_KEY;
5399         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5400                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5401         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5402                 type = NL80211_AUTHTYPE_FT;
5403         else
5404                 goto nla_put_failure;
5405
5406         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5407         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5408
5409 skip_auth_type:
5410         ret = nl80211_set_conn_keys(params, msg);
5411         if (ret)
5412                 goto nla_put_failure;
5413
5414         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5415         msg = NULL;
5416         if (ret) {
5417                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5418                            "(%s)", ret, strerror(-ret));
5419                 goto nla_put_failure;
5420         }
5421         ret = 0;
5422         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
5423
5424 nla_put_failure:
5425         nlmsg_free(msg);
5426         return ret;
5427
5428 }
5429
5430
5431 static int wpa_driver_nl80211_connect(
5432         struct wpa_driver_nl80211_data *drv,
5433         struct wpa_driver_associate_params *params)
5434 {
5435         int ret = wpa_driver_nl80211_try_connect(drv, params);
5436         if (ret == -EALREADY) {
5437                 /*
5438                  * cfg80211 does not currently accept new connections if
5439                  * we are already connected. As a workaround, force
5440                  * disconnection and try again.
5441                  */
5442                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5443                            "disconnecting before reassociation "
5444                            "attempt");
5445                 if (wpa_driver_nl80211_disconnect(
5446                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5447                         return -1;
5448                 ret = wpa_driver_nl80211_try_connect(drv, params);
5449         }
5450         return ret;
5451 }
5452
5453
5454 static int wpa_driver_nl80211_associate(
5455         void *priv, struct wpa_driver_associate_params *params)
5456 {
5457         struct i802_bss *bss = priv;
5458         struct wpa_driver_nl80211_data *drv = bss->drv;
5459         int ret;
5460         struct nl_msg *msg;
5461
5462         if (params->mode == IEEE80211_MODE_AP)
5463                 return wpa_driver_nl80211_ap(drv, params);
5464
5465         if (params->mode == IEEE80211_MODE_IBSS)
5466                 return wpa_driver_nl80211_ibss(drv, params);
5467
5468         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5469                 enum nl80211_iftype nlmode = params->p2p ?
5470                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5471
5472                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5473                         return -1;
5474                 return wpa_driver_nl80211_connect(drv, params);
5475         }
5476
5477         nl80211_mark_disconnected(drv);
5478
5479         msg = nlmsg_alloc();
5480         if (!msg)
5481                 return -1;
5482
5483         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5484                    drv->ifindex);
5485         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
5486
5487         ret = nl80211_connect_common(drv, params, msg);
5488         if (ret)
5489                 goto nla_put_failure;
5490
5491         if (params->prev_bssid) {
5492                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
5493                            MAC2STR(params->prev_bssid));
5494                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5495                         params->prev_bssid);
5496         }
5497
5498         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5499         msg = NULL;
5500         if (ret) {
5501                 wpa_dbg(drv->ctx, MSG_DEBUG,
5502                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
5503                         ret, strerror(-ret));
5504                 nl80211_dump_scan(drv);
5505                 goto nla_put_failure;
5506         }
5507         ret = 0;
5508         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
5509                    "successfully");
5510
5511 nla_put_failure:
5512         nlmsg_free(msg);
5513         return ret;
5514 }
5515
5516
5517 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5518                             int ifindex, enum nl80211_iftype mode)
5519 {
5520         struct nl_msg *msg;
5521         int ret = -ENOBUFS;
5522
5523         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5524                    ifindex, mode, nl80211_iftype_str(mode));
5525
5526         msg = nlmsg_alloc();
5527         if (!msg)
5528                 return -ENOMEM;
5529
5530         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
5531         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
5532                 goto nla_put_failure;
5533         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
5534
5535         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5536         msg = NULL;
5537         if (!ret)
5538                 return 0;
5539 nla_put_failure:
5540         nlmsg_free(msg);
5541         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5542                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5543         return ret;
5544 }
5545
5546
5547 static int wpa_driver_nl80211_set_mode_impl(
5548                 struct i802_bss *bss,
5549                 enum nl80211_iftype nlmode,
5550                 struct hostapd_freq_params *desired_freq_params)
5551 {
5552         struct wpa_driver_nl80211_data *drv = bss->drv;
5553         int ret = -1;
5554         int i;
5555         int was_ap = is_ap_interface(drv->nlmode);
5556         int res;
5557         int mode_switch_res;
5558
5559         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5560         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5561                 mode_switch_res = 0;
5562
5563         if (mode_switch_res == 0) {
5564                 drv->nlmode = nlmode;
5565                 ret = 0;
5566                 goto done;
5567         }
5568
5569         if (mode_switch_res == -ENODEV)
5570                 return -1;
5571
5572         if (nlmode == drv->nlmode) {
5573                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5574                            "requested mode - ignore error");
5575                 ret = 0;
5576                 goto done; /* Already in the requested mode */
5577         }
5578
5579         /* mac80211 doesn't allow mode changes while the device is up, so
5580          * take the device down, try to set the mode again, and bring the
5581          * device back up.
5582          */
5583         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5584                    "interface down");
5585         for (i = 0; i < 10; i++) {
5586                 res = i802_set_iface_flags(bss, 0);
5587                 if (res == -EACCES || res == -ENODEV)
5588                         break;
5589                 if (res != 0) {
5590                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5591                                    "interface down");
5592                         os_sleep(0, 100000);
5593                         continue;
5594                 }
5595
5596                 /*
5597                  * Setting the mode will fail for some drivers if the phy is
5598                  * on a frequency that the mode is disallowed in.
5599                  */
5600                 if (desired_freq_params) {
5601                         res = i802_set_freq(bss, desired_freq_params);
5602                         if (res) {
5603                                 wpa_printf(MSG_DEBUG,
5604                                            "nl80211: Failed to set frequency on interface");
5605                         }
5606                 }
5607
5608                 /* Try to set the mode again while the interface is down */
5609                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5610                 if (mode_switch_res == -EBUSY) {
5611                         wpa_printf(MSG_DEBUG,
5612                                    "nl80211: Delaying mode set while interface going down");
5613                         os_sleep(0, 100000);
5614                         continue;
5615                 }
5616                 ret = mode_switch_res;
5617                 break;
5618         }
5619
5620         if (!ret) {
5621                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5622                            "interface is down");
5623                 drv->nlmode = nlmode;
5624                 drv->ignore_if_down_event = 1;
5625         }
5626
5627         /* Bring the interface back up */
5628         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5629         if (res != 0) {
5630                 wpa_printf(MSG_DEBUG,
5631                            "nl80211: Failed to set interface up after switching mode");
5632                 ret = -1;
5633         }
5634
5635 done:
5636         if (ret) {
5637                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5638                            "from %d failed", nlmode, drv->nlmode);
5639                 return ret;
5640         }
5641
5642         if (is_p2p_net_interface(nlmode))
5643                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5644         else if (drv->disabled_11b_rates)
5645                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5646
5647         if (is_ap_interface(nlmode)) {
5648                 nl80211_mgmt_unsubscribe(bss, "start AP");
5649                 /* Setup additional AP mode functionality if needed */
5650                 if (nl80211_setup_ap(bss))
5651                         return -1;
5652         } else if (was_ap) {
5653                 /* Remove additional AP mode functionality */
5654                 nl80211_teardown_ap(bss);
5655         } else {
5656                 nl80211_mgmt_unsubscribe(bss, "mode change");
5657         }
5658
5659         if (is_mesh_interface(nlmode) &&
5660             nl80211_mgmt_subscribe_mesh(bss))
5661                 return -1;
5662
5663         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5664             !is_mesh_interface(nlmode) &&
5665             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5666                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5667                            "frame processing - ignore for now");
5668
5669         return 0;
5670 }
5671
5672
5673 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5674                                 enum nl80211_iftype nlmode)
5675 {
5676         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5677 }
5678
5679
5680 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5681                                             struct hostapd_freq_params *freq)
5682 {
5683         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5684                                                 freq);
5685 }
5686
5687
5688 static int wpa_driver_nl80211_get_capa(void *priv,
5689                                        struct wpa_driver_capa *capa)
5690 {
5691         struct i802_bss *bss = priv;
5692         struct wpa_driver_nl80211_data *drv = bss->drv;
5693
5694         if (!drv->has_capability)
5695                 return -1;
5696         os_memcpy(capa, &drv->capa, sizeof(*capa));
5697         if (drv->extended_capa && drv->extended_capa_mask) {
5698                 capa->extended_capa = drv->extended_capa;
5699                 capa->extended_capa_mask = drv->extended_capa_mask;
5700                 capa->extended_capa_len = drv->extended_capa_len;
5701         }
5702
5703         return 0;
5704 }
5705
5706
5707 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5708 {
5709         struct i802_bss *bss = priv;
5710         struct wpa_driver_nl80211_data *drv = bss->drv;
5711
5712         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5713                    bss->ifname, drv->operstate, state,
5714                    state ? "UP" : "DORMANT");
5715         drv->operstate = state;
5716         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5717                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5718 }
5719
5720
5721 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5722 {
5723         struct i802_bss *bss = priv;
5724         struct wpa_driver_nl80211_data *drv = bss->drv;
5725         struct nl_msg *msg;
5726         struct nl80211_sta_flag_update upd;
5727         int ret = -ENOBUFS;
5728
5729         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5730                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5731                 return 0;
5732         }
5733
5734         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5735                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5736
5737         msg = nlmsg_alloc();
5738         if (!msg)
5739                 return -ENOMEM;
5740
5741         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5742
5743         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5744                     if_nametoindex(bss->ifname));
5745         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
5746
5747         os_memset(&upd, 0, sizeof(upd));
5748         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5749         if (authorized)
5750                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5751         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5752
5753         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5754         msg = NULL;
5755         if (!ret)
5756                 return 0;
5757  nla_put_failure:
5758         nlmsg_free(msg);
5759         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5760                    ret, strerror(-ret));
5761         return ret;
5762 }
5763
5764
5765 /* Set kernel driver on given frequency (MHz) */
5766 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5767 {
5768         struct i802_bss *bss = priv;
5769         return nl80211_set_channel(bss, freq, 0);
5770 }
5771
5772
5773 static inline int min_int(int a, int b)
5774 {
5775         if (a < b)
5776                 return a;
5777         return b;
5778 }
5779
5780
5781 static int get_key_handler(struct nl_msg *msg, void *arg)
5782 {
5783         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5784         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5785
5786         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5787                   genlmsg_attrlen(gnlh, 0), NULL);
5788
5789         /*
5790          * TODO: validate the key index and mac address!
5791          * Otherwise, there's a race condition as soon as
5792          * the kernel starts sending key notifications.
5793          */
5794
5795         if (tb[NL80211_ATTR_KEY_SEQ])
5796                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5797                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5798         return NL_SKIP;
5799 }
5800
5801
5802 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5803                            int idx, u8 *seq)
5804 {
5805         struct i802_bss *bss = priv;
5806         struct wpa_driver_nl80211_data *drv = bss->drv;
5807         struct nl_msg *msg;
5808
5809         msg = nlmsg_alloc();
5810         if (!msg)
5811                 return -ENOMEM;
5812
5813         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
5814
5815         if (addr)
5816                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5817         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
5818         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
5819
5820         memset(seq, 0, 6);
5821
5822         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5823  nla_put_failure:
5824         nlmsg_free(msg);
5825         return -ENOBUFS;
5826 }
5827
5828
5829 static int i802_set_rts(void *priv, int rts)
5830 {
5831         struct i802_bss *bss = priv;
5832         struct wpa_driver_nl80211_data *drv = bss->drv;
5833         struct nl_msg *msg;
5834         int ret = -ENOBUFS;
5835         u32 val;
5836
5837         msg = nlmsg_alloc();
5838         if (!msg)
5839                 return -ENOMEM;
5840
5841         if (rts >= 2347)
5842                 val = (u32) -1;
5843         else
5844                 val = rts;
5845
5846         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5847         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5848         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
5849
5850         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5851         msg = NULL;
5852         if (!ret)
5853                 return 0;
5854 nla_put_failure:
5855         nlmsg_free(msg);
5856         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5857                    "%d (%s)", rts, ret, strerror(-ret));
5858         return ret;
5859 }
5860
5861
5862 static int i802_set_frag(void *priv, int frag)
5863 {
5864         struct i802_bss *bss = priv;
5865         struct wpa_driver_nl80211_data *drv = bss->drv;
5866         struct nl_msg *msg;
5867         int ret = -ENOBUFS;
5868         u32 val;
5869
5870         msg = nlmsg_alloc();
5871         if (!msg)
5872                 return -ENOMEM;
5873
5874         if (frag >= 2346)
5875                 val = (u32) -1;
5876         else
5877                 val = frag;
5878
5879         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5880         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5881         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
5882
5883         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5884         msg = NULL;
5885         if (!ret)
5886                 return 0;
5887 nla_put_failure:
5888         nlmsg_free(msg);
5889         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5890                    "%d: %d (%s)", frag, ret, strerror(-ret));
5891         return ret;
5892 }
5893
5894
5895 static int i802_flush(void *priv)
5896 {
5897         struct i802_bss *bss = priv;
5898         struct wpa_driver_nl80211_data *drv = bss->drv;
5899         struct nl_msg *msg;
5900         int res;
5901
5902         msg = nlmsg_alloc();
5903         if (!msg)
5904                 return -1;
5905
5906         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5907                    bss->ifname);
5908         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5909
5910         /*
5911          * XXX: FIX! this needs to flush all VLANs too
5912          */
5913         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5914                     if_nametoindex(bss->ifname));
5915
5916         res = send_and_recv_msgs(drv, msg, NULL, NULL);
5917         if (res) {
5918                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5919                            "(%s)", res, strerror(-res));
5920         }
5921         return res;
5922  nla_put_failure:
5923         nlmsg_free(msg);
5924         return -ENOBUFS;
5925 }
5926
5927
5928 static int get_sta_handler(struct nl_msg *msg, void *arg)
5929 {
5930         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5931         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5932         struct hostap_sta_driver_data *data = arg;
5933         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5934         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5935                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5936                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5937                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5938                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5939                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5940                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5941         };
5942
5943         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5944                   genlmsg_attrlen(gnlh, 0), NULL);
5945
5946         /*
5947          * TODO: validate the interface and mac address!
5948          * Otherwise, there's a race condition as soon as
5949          * the kernel starts sending station notifications.
5950          */
5951
5952         if (!tb[NL80211_ATTR_STA_INFO]) {
5953                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5954                 return NL_SKIP;
5955         }
5956         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5957                              tb[NL80211_ATTR_STA_INFO],
5958                              stats_policy)) {
5959                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5960                 return NL_SKIP;
5961         }
5962
5963         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5964                 data->inactive_msec =
5965                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5966         if (stats[NL80211_STA_INFO_RX_BYTES])
5967                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5968         if (stats[NL80211_STA_INFO_TX_BYTES])
5969                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5970         if (stats[NL80211_STA_INFO_RX_PACKETS])
5971                 data->rx_packets =
5972                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5973         if (stats[NL80211_STA_INFO_TX_PACKETS])
5974                 data->tx_packets =
5975                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5976         if (stats[NL80211_STA_INFO_TX_FAILED])
5977                 data->tx_retry_failed =
5978                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5979
5980         return NL_SKIP;
5981 }
5982
5983 static int i802_read_sta_data(struct i802_bss *bss,
5984                               struct hostap_sta_driver_data *data,
5985                               const u8 *addr)
5986 {
5987         struct wpa_driver_nl80211_data *drv = bss->drv;
5988         struct nl_msg *msg;
5989
5990         os_memset(data, 0, sizeof(*data));
5991         msg = nlmsg_alloc();
5992         if (!msg)
5993                 return -ENOMEM;
5994
5995         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
5996
5997         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5998         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5999
6000         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
6001  nla_put_failure:
6002         nlmsg_free(msg);
6003         return -ENOBUFS;
6004 }
6005
6006
6007 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
6008                                     int cw_min, int cw_max, int burst_time)
6009 {
6010         struct i802_bss *bss = priv;
6011         struct wpa_driver_nl80211_data *drv = bss->drv;
6012         struct nl_msg *msg;
6013         struct nlattr *txq, *params;
6014
6015         msg = nlmsg_alloc();
6016         if (!msg)
6017                 return -1;
6018
6019         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
6020
6021         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
6022
6023         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
6024         if (!txq)
6025                 goto nla_put_failure;
6026
6027         /* We are only sending parameters for a single TXQ at a time */
6028         params = nla_nest_start(msg, 1);
6029         if (!params)
6030                 goto nla_put_failure;
6031
6032         switch (queue) {
6033         case 0:
6034                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
6035                 break;
6036         case 1:
6037                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
6038                 break;
6039         case 2:
6040                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
6041                 break;
6042         case 3:
6043                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
6044                 break;
6045         }
6046         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6047          * 32 usec, so need to convert the value here. */
6048         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
6049         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
6050         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
6051         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
6052
6053         nla_nest_end(msg, params);
6054
6055         nla_nest_end(msg, txq);
6056
6057         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6058                 return 0;
6059         msg = NULL;
6060  nla_put_failure:
6061         nlmsg_free(msg);
6062         return -1;
6063 }
6064
6065
6066 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
6067                              const char *ifname, int vlan_id)
6068 {
6069         struct wpa_driver_nl80211_data *drv = bss->drv;
6070         struct nl_msg *msg;
6071         int ret = -ENOBUFS;
6072
6073         msg = nlmsg_alloc();
6074         if (!msg)
6075                 return -ENOMEM;
6076
6077         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
6078                    ", ifname=%s[%d], vlan_id=%d)",
6079                    bss->ifname, if_nametoindex(bss->ifname),
6080                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
6081         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6082
6083         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6084                     if_nametoindex(bss->ifname));
6085         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6086         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
6087                     if_nametoindex(ifname));
6088
6089         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6090         msg = NULL;
6091         if (ret < 0) {
6092                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6093                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6094                            MAC2STR(addr), ifname, vlan_id, ret,
6095                            strerror(-ret));
6096         }
6097  nla_put_failure:
6098         nlmsg_free(msg);
6099         return ret;
6100 }
6101
6102
6103 static int i802_get_inact_sec(void *priv, const u8 *addr)
6104 {
6105         struct hostap_sta_driver_data data;
6106         int ret;
6107
6108         data.inactive_msec = (unsigned long) -1;
6109         ret = i802_read_sta_data(priv, &data, addr);
6110         if (ret || data.inactive_msec == (unsigned long) -1)
6111                 return -1;
6112         return data.inactive_msec / 1000;
6113 }
6114
6115
6116 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6117 {
6118 #if 0
6119         /* TODO */
6120 #endif
6121         return 0;
6122 }
6123
6124
6125 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6126                            int reason)
6127 {
6128         struct i802_bss *bss = priv;
6129         struct wpa_driver_nl80211_data *drv = bss->drv;
6130         struct ieee80211_mgmt mgmt;
6131
6132         if (is_mesh_interface(drv->nlmode))
6133                 return -1;
6134
6135         if (drv->device_ap_sme)
6136                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
6137
6138         memset(&mgmt, 0, sizeof(mgmt));
6139         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6140                                           WLAN_FC_STYPE_DEAUTH);
6141         memcpy(mgmt.da, addr, ETH_ALEN);
6142         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6143         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6144         mgmt.u.deauth.reason_code = host_to_le16(reason);
6145         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6146                                             IEEE80211_HDRLEN +
6147                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
6148                                             0);
6149 }
6150
6151
6152 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6153                              int reason)
6154 {
6155         struct i802_bss *bss = priv;
6156         struct wpa_driver_nl80211_data *drv = bss->drv;
6157         struct ieee80211_mgmt mgmt;
6158
6159         if (is_mesh_interface(drv->nlmode))
6160                 return -1;
6161
6162         if (drv->device_ap_sme)
6163                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
6164
6165         memset(&mgmt, 0, sizeof(mgmt));
6166         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6167                                           WLAN_FC_STYPE_DISASSOC);
6168         memcpy(mgmt.da, addr, ETH_ALEN);
6169         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6170         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6171         mgmt.u.disassoc.reason_code = host_to_le16(reason);
6172         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6173                                             IEEE80211_HDRLEN +
6174                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
6175                                             0);
6176 }
6177
6178
6179 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
6180 {
6181         char buf[200], *pos, *end;
6182         int i, res;
6183
6184         pos = buf;
6185         end = pos + sizeof(buf);
6186
6187         for (i = 0; i < drv->num_if_indices; i++) {
6188                 if (!drv->if_indices[i])
6189                         continue;
6190                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
6191                 if (res < 0 || res >= end - pos)
6192                         break;
6193                 pos += res;
6194         }
6195         *pos = '\0';
6196
6197         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
6198                    drv->num_if_indices, buf);
6199 }
6200
6201
6202 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6203 {
6204         int i;
6205         int *old;
6206
6207         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6208                    ifidx);
6209         if (have_ifidx(drv, ifidx)) {
6210                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
6211                            ifidx);
6212                 return;
6213         }
6214         for (i = 0; i < drv->num_if_indices; i++) {
6215                 if (drv->if_indices[i] == 0) {
6216                         drv->if_indices[i] = ifidx;
6217                         dump_ifidx(drv);
6218                         return;
6219                 }
6220         }
6221
6222         if (drv->if_indices != drv->default_if_indices)
6223                 old = drv->if_indices;
6224         else
6225                 old = NULL;
6226
6227         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
6228                                            sizeof(int));
6229         if (!drv->if_indices) {
6230                 if (!old)
6231                         drv->if_indices = drv->default_if_indices;
6232                 else
6233                         drv->if_indices = old;
6234                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6235                            "interfaces");
6236                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6237                 return;
6238         } else if (!old)
6239                 os_memcpy(drv->if_indices, drv->default_if_indices,
6240                           sizeof(drv->default_if_indices));
6241         drv->if_indices[drv->num_if_indices] = ifidx;
6242         drv->num_if_indices++;
6243         dump_ifidx(drv);
6244 }
6245
6246
6247 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6248 {
6249         int i;
6250
6251         for (i = 0; i < drv->num_if_indices; i++) {
6252                 if (drv->if_indices[i] == ifidx) {
6253                         drv->if_indices[i] = 0;
6254                         break;
6255                 }
6256         }
6257         dump_ifidx(drv);
6258 }
6259
6260
6261 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6262 {
6263         int i;
6264
6265         for (i = 0; i < drv->num_if_indices; i++)
6266                 if (drv->if_indices[i] == ifidx)
6267                         return 1;
6268
6269         return 0;
6270 }
6271
6272
6273 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6274                             const char *bridge_ifname, char *ifname_wds)
6275 {
6276         struct i802_bss *bss = priv;
6277         struct wpa_driver_nl80211_data *drv = bss->drv;
6278         char name[IFNAMSIZ + 1];
6279
6280         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6281         if (ifname_wds)
6282                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
6283
6284         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6285                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6286         if (val) {
6287                 if (!if_nametoindex(name)) {
6288                         if (nl80211_create_iface(drv, name,
6289                                                  NL80211_IFTYPE_AP_VLAN,
6290                                                  bss->addr, 1, NULL, NULL, 0) <
6291                             0)
6292                                 return -1;
6293                         if (bridge_ifname &&
6294                             linux_br_add_if(drv->global->ioctl_sock,
6295                                             bridge_ifname, name) < 0)
6296                                 return -1;
6297                 }
6298                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
6299                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
6300                                    "interface %s up", name);
6301                 }
6302                 return i802_set_sta_vlan(priv, addr, name, 0);
6303         } else {
6304                 if (bridge_ifname)
6305                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
6306                                         name);
6307
6308                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6309                 nl80211_remove_iface(drv, if_nametoindex(name));
6310                 return 0;
6311         }
6312 }
6313
6314
6315 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6316 {
6317         struct wpa_driver_nl80211_data *drv = eloop_ctx;
6318         struct sockaddr_ll lladdr;
6319         unsigned char buf[3000];
6320         int len;
6321         socklen_t fromlen = sizeof(lladdr);
6322
6323         len = recvfrom(sock, buf, sizeof(buf), 0,
6324                        (struct sockaddr *)&lladdr, &fromlen);
6325         if (len < 0) {
6326                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
6327                            strerror(errno));
6328                 return;
6329         }
6330
6331         if (have_ifidx(drv, lladdr.sll_ifindex))
6332                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6333 }
6334
6335
6336 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6337                              struct i802_bss *bss,
6338                              const char *brname, const char *ifname)
6339 {
6340         int br_ifindex;
6341         char in_br[IFNAMSIZ];
6342
6343         os_strlcpy(bss->brname, brname, IFNAMSIZ);
6344         br_ifindex = if_nametoindex(brname);
6345         if (br_ifindex == 0) {
6346                 /*
6347                  * Bridge was configured, but the bridge device does
6348                  * not exist. Try to add it now.
6349                  */
6350                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6351                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6352                                    "bridge interface %s: %s",
6353                                    brname, strerror(errno));
6354                         return -1;
6355                 }
6356                 bss->added_bridge = 1;
6357                 br_ifindex = if_nametoindex(brname);
6358                 add_ifidx(drv, br_ifindex);
6359         }
6360         bss->br_ifindex = br_ifindex;
6361
6362         if (linux_br_get(in_br, ifname) == 0) {
6363                 if (os_strcmp(in_br, brname) == 0)
6364                         return 0; /* already in the bridge */
6365
6366                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6367                            "bridge %s", ifname, in_br);
6368                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6369                     0) {
6370                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
6371                                    "remove interface %s from bridge "
6372                                    "%s: %s",
6373                                    ifname, brname, strerror(errno));
6374                         return -1;
6375                 }
6376         }
6377
6378         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6379                    ifname, brname);
6380         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6381                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6382                            "into bridge %s: %s",
6383                            ifname, brname, strerror(errno));
6384                 return -1;
6385         }
6386         bss->added_if_into_bridge = 1;
6387
6388         return 0;
6389 }
6390
6391
6392 static void *i802_init(struct hostapd_data *hapd,
6393                        struct wpa_init_params *params)
6394 {
6395         struct wpa_driver_nl80211_data *drv;
6396         struct i802_bss *bss;
6397         size_t i;
6398         char brname[IFNAMSIZ];
6399         int ifindex, br_ifindex;
6400         int br_added = 0;
6401
6402         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6403                                           params->global_priv, 1,
6404                                           params->bssid);
6405         if (bss == NULL)
6406                 return NULL;
6407
6408         drv = bss->drv;
6409
6410         if (linux_br_get(brname, params->ifname) == 0) {
6411                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6412                            params->ifname, brname);
6413                 br_ifindex = if_nametoindex(brname);
6414                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6415         } else {
6416                 brname[0] = '\0';
6417                 br_ifindex = 0;
6418         }
6419         bss->br_ifindex = br_ifindex;
6420
6421         for (i = 0; i < params->num_bridge; i++) {
6422                 if (params->bridge[i]) {
6423                         ifindex = if_nametoindex(params->bridge[i]);
6424                         if (ifindex)
6425                                 add_ifidx(drv, ifindex);
6426                         if (ifindex == br_ifindex)
6427                                 br_added = 1;
6428                 }
6429         }
6430         if (!br_added && br_ifindex &&
6431             (params->num_bridge == 0 || !params->bridge[0]))
6432                 add_ifidx(drv, br_ifindex);
6433
6434         /* start listening for EAPOL on the default AP interface */
6435         add_ifidx(drv, drv->ifindex);
6436
6437         if (params->num_bridge && params->bridge[0] &&
6438             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6439                 goto failed;
6440
6441 #ifdef CONFIG_LIBNL3_ROUTE
6442         if (bss->added_if_into_bridge) {
6443                 drv->rtnl_sk = nl_socket_alloc();
6444                 if (drv->rtnl_sk == NULL) {
6445                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6446                         goto failed;
6447                 }
6448
6449                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6450                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6451                                    strerror(errno));
6452                         goto failed;
6453                 }
6454         }
6455 #endif /* CONFIG_LIBNL3_ROUTE */
6456
6457         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6458         if (drv->eapol_sock < 0) {
6459                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6460                            strerror(errno));
6461                 goto failed;
6462         }
6463
6464         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6465         {
6466                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6467                 goto failed;
6468         }
6469
6470         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6471                                params->own_addr))
6472                 goto failed;
6473         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6474
6475         memcpy(bss->addr, params->own_addr, ETH_ALEN);
6476
6477         return bss;
6478
6479 failed:
6480         wpa_driver_nl80211_deinit(bss);
6481         return NULL;
6482 }
6483
6484
6485 static void i802_deinit(void *priv)
6486 {
6487         struct i802_bss *bss = priv;
6488         wpa_driver_nl80211_deinit(bss);
6489 }
6490
6491
6492 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6493         enum wpa_driver_if_type type)
6494 {
6495         switch (type) {
6496         case WPA_IF_STATION:
6497                 return NL80211_IFTYPE_STATION;
6498         case WPA_IF_P2P_CLIENT:
6499         case WPA_IF_P2P_GROUP:
6500                 return NL80211_IFTYPE_P2P_CLIENT;
6501         case WPA_IF_AP_VLAN:
6502                 return NL80211_IFTYPE_AP_VLAN;
6503         case WPA_IF_AP_BSS:
6504                 return NL80211_IFTYPE_AP;
6505         case WPA_IF_P2P_GO:
6506                 return NL80211_IFTYPE_P2P_GO;
6507         case WPA_IF_P2P_DEVICE:
6508                 return NL80211_IFTYPE_P2P_DEVICE;
6509         }
6510         return -1;
6511 }
6512
6513
6514 #ifdef CONFIG_P2P
6515
6516 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6517 {
6518         struct wpa_driver_nl80211_data *drv;
6519         dl_list_for_each(drv, &global->interfaces,
6520                          struct wpa_driver_nl80211_data, list) {
6521                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6522                         return 1;
6523         }
6524         return 0;
6525 }
6526
6527
6528 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6529                                       u8 *new_addr)
6530 {
6531         unsigned int idx;
6532
6533         if (!drv->global)
6534                 return -1;
6535
6536         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6537         for (idx = 0; idx < 64; idx++) {
6538                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6539                 new_addr[0] ^= idx << 2;
6540                 if (!nl80211_addr_in_use(drv->global, new_addr))
6541                         break;
6542         }
6543         if (idx == 64)
6544                 return -1;
6545
6546         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6547                    MACSTR, MAC2STR(new_addr));
6548
6549         return 0;
6550 }
6551
6552 #endif /* CONFIG_P2P */
6553
6554
6555 struct wdev_info {
6556         u64 wdev_id;
6557         int wdev_id_set;
6558         u8 macaddr[ETH_ALEN];
6559 };
6560
6561 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6562 {
6563         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6564         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6565         struct wdev_info *wi = arg;
6566
6567         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6568                   genlmsg_attrlen(gnlh, 0), NULL);
6569         if (tb[NL80211_ATTR_WDEV]) {
6570                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6571                 wi->wdev_id_set = 1;
6572         }
6573
6574         if (tb[NL80211_ATTR_MAC])
6575                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6576                           ETH_ALEN);
6577
6578         return NL_SKIP;
6579 }
6580
6581
6582 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6583                                      const char *ifname, const u8 *addr,
6584                                      void *bss_ctx, void **drv_priv,
6585                                      char *force_ifname, u8 *if_addr,
6586                                      const char *bridge, int use_existing)
6587 {
6588         enum nl80211_iftype nlmode;
6589         struct i802_bss *bss = priv;
6590         struct wpa_driver_nl80211_data *drv = bss->drv;
6591         int ifidx;
6592         int added = 1;
6593
6594         if (addr)
6595                 os_memcpy(if_addr, addr, ETH_ALEN);
6596         nlmode = wpa_driver_nl80211_if_type(type);
6597         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6598                 struct wdev_info p2pdev_info;
6599
6600                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6601                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6602                                              0, nl80211_wdev_handler,
6603                                              &p2pdev_info, use_existing);
6604                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6605                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6606                                    ifname);
6607                         return -1;
6608                 }
6609
6610                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6611                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6612                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6613                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6614                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6615                            ifname,
6616                            (long long unsigned int) p2pdev_info.wdev_id);
6617         } else {
6618                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6619                                              0, NULL, NULL, use_existing);
6620                 if (use_existing && ifidx == -ENFILE) {
6621                         added = 0;
6622                         ifidx = if_nametoindex(ifname);
6623                 } else if (ifidx < 0) {
6624                         return -1;
6625                 }
6626         }
6627
6628         if (!addr) {
6629                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
6630                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6631                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6632                                             bss->ifname, if_addr) < 0) {
6633                         if (added)
6634                                 nl80211_remove_iface(drv, ifidx);
6635                         return -1;
6636                 }
6637         }
6638
6639 #ifdef CONFIG_P2P
6640         if (!addr &&
6641             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6642              type == WPA_IF_P2P_GO)) {
6643                 /* Enforce unique P2P Interface Address */
6644                 u8 new_addr[ETH_ALEN];
6645
6646                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6647                                        new_addr) < 0) {
6648                         if (added)
6649                                 nl80211_remove_iface(drv, ifidx);
6650                         return -1;
6651                 }
6652                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6653                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6654                                    "for P2P group interface");
6655                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6656                                 if (added)
6657                                         nl80211_remove_iface(drv, ifidx);
6658                                 return -1;
6659                         }
6660                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6661                                                new_addr) < 0) {
6662                                 if (added)
6663                                         nl80211_remove_iface(drv, ifidx);
6664                                 return -1;
6665                         }
6666                 }
6667                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6668         }
6669 #endif /* CONFIG_P2P */
6670
6671         if (type == WPA_IF_AP_BSS) {
6672                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6673                 if (new_bss == NULL) {
6674                         if (added)
6675                                 nl80211_remove_iface(drv, ifidx);
6676                         return -1;
6677                 }
6678
6679                 if (bridge &&
6680                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6681                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6682                                    "interface %s to a bridge %s",
6683                                    ifname, bridge);
6684                         if (added)
6685                                 nl80211_remove_iface(drv, ifidx);
6686                         os_free(new_bss);
6687                         return -1;
6688                 }
6689
6690                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6691                 {
6692                         if (added)
6693                                 nl80211_remove_iface(drv, ifidx);
6694                         os_free(new_bss);
6695                         return -1;
6696                 }
6697                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6698                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6699                 new_bss->ifindex = ifidx;
6700                 new_bss->drv = drv;
6701                 new_bss->next = drv->first_bss->next;
6702                 new_bss->freq = drv->first_bss->freq;
6703                 new_bss->ctx = bss_ctx;
6704                 new_bss->added_if = added;
6705                 drv->first_bss->next = new_bss;
6706                 if (drv_priv)
6707                         *drv_priv = new_bss;
6708                 nl80211_init_bss(new_bss);
6709
6710                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6711                 if (nl80211_setup_ap(new_bss))
6712                         return -1;
6713         }
6714
6715         if (drv->global)
6716                 drv->global->if_add_ifindex = ifidx;
6717
6718         /*
6719          * Some virtual interfaces need to process EAPOL packets and events on
6720          * the parent interface. This is used mainly with hostapd.
6721          */
6722         if (ifidx > 0 &&
6723             (drv->hostapd ||
6724              nlmode == NL80211_IFTYPE_AP_VLAN ||
6725              nlmode == NL80211_IFTYPE_WDS ||
6726              nlmode == NL80211_IFTYPE_MONITOR))
6727                 add_ifidx(drv, ifidx);
6728
6729         return 0;
6730 }
6731
6732
6733 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6734                                         enum wpa_driver_if_type type,
6735                                         const char *ifname)
6736 {
6737         struct wpa_driver_nl80211_data *drv = bss->drv;
6738         int ifindex = if_nametoindex(ifname);
6739
6740         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6741                    __func__, type, ifname, ifindex, bss->added_if);
6742         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6743                 nl80211_remove_iface(drv, ifindex);
6744         else if (ifindex > 0 && !bss->added_if) {
6745                 struct wpa_driver_nl80211_data *drv2;
6746                 dl_list_for_each(drv2, &drv->global->interfaces,
6747                                  struct wpa_driver_nl80211_data, list)
6748                         del_ifidx(drv2, ifindex);
6749         }
6750
6751         if (type != WPA_IF_AP_BSS)
6752                 return 0;
6753
6754         if (bss->added_if_into_bridge) {
6755                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6756                                     bss->ifname) < 0)
6757                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6758                                    "interface %s from bridge %s: %s",
6759                                    bss->ifname, bss->brname, strerror(errno));
6760         }
6761         if (bss->added_bridge) {
6762                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6763                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6764                                    "bridge %s: %s",
6765                                    bss->brname, strerror(errno));
6766         }
6767
6768         if (bss != drv->first_bss) {
6769                 struct i802_bss *tbss;
6770
6771                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6772                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6773                         if (tbss->next == bss) {
6774                                 tbss->next = bss->next;
6775                                 /* Unsubscribe management frames */
6776                                 nl80211_teardown_ap(bss);
6777                                 nl80211_destroy_bss(bss);
6778                                 if (!bss->added_if)
6779                                         i802_set_iface_flags(bss, 0);
6780                                 os_free(bss);
6781                                 bss = NULL;
6782                                 break;
6783                         }
6784                 }
6785                 if (bss)
6786                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6787                                    "BSS %p in the list", __func__, bss);
6788         } else {
6789                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6790                 nl80211_teardown_ap(bss);
6791                 if (!bss->added_if && !drv->first_bss->next)
6792                         wpa_driver_nl80211_del_beacon(drv);
6793                 nl80211_destroy_bss(bss);
6794                 if (!bss->added_if)
6795                         i802_set_iface_flags(bss, 0);
6796                 if (drv->first_bss->next) {
6797                         drv->first_bss = drv->first_bss->next;
6798                         drv->ctx = drv->first_bss->ctx;
6799                         os_free(bss);
6800                 } else {
6801                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6802                 }
6803         }
6804
6805         return 0;
6806 }
6807
6808
6809 static int cookie_handler(struct nl_msg *msg, void *arg)
6810 {
6811         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6812         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6813         u64 *cookie = arg;
6814         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6815                   genlmsg_attrlen(gnlh, 0), NULL);
6816         if (tb[NL80211_ATTR_COOKIE])
6817                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6818         return NL_SKIP;
6819 }
6820
6821
6822 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6823                                   unsigned int freq, unsigned int wait,
6824                                   const u8 *buf, size_t buf_len,
6825                                   u64 *cookie_out, int no_cck, int no_ack,
6826                                   int offchanok)
6827 {
6828         struct wpa_driver_nl80211_data *drv = bss->drv;
6829         struct nl_msg *msg;
6830         u64 cookie;
6831         int ret = -1;
6832
6833         msg = nlmsg_alloc();
6834         if (!msg)
6835                 return -1;
6836
6837         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6838                    "no_ack=%d offchanok=%d",
6839                    freq, wait, no_cck, no_ack, offchanok);
6840         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6841         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
6842
6843         if (nl80211_set_iface_id(msg, bss) < 0)
6844                 goto nla_put_failure;
6845         if (freq)
6846                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6847         if (wait)
6848                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
6849         if (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6850                           drv->test_use_roc_tx))
6851                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
6852         if (no_cck)
6853                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
6854         if (no_ack)
6855                 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
6856
6857         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
6858
6859         cookie = 0;
6860         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6861         msg = NULL;
6862         if (ret) {
6863                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6864                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6865                            freq, wait);
6866                 goto nla_put_failure;
6867         }
6868         wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6869                    "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6870                    (long long unsigned int) cookie);
6871
6872         if (cookie_out)
6873                 *cookie_out = no_ack ? (u64) -1 : cookie;
6874
6875 nla_put_failure:
6876         nlmsg_free(msg);
6877         return ret;
6878 }
6879
6880
6881 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6882                                           unsigned int freq,
6883                                           unsigned int wait_time,
6884                                           const u8 *dst, const u8 *src,
6885                                           const u8 *bssid,
6886                                           const u8 *data, size_t data_len,
6887                                           int no_cck)
6888 {
6889         struct wpa_driver_nl80211_data *drv = bss->drv;
6890         int ret = -1;
6891         u8 *buf;
6892         struct ieee80211_hdr *hdr;
6893
6894         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6895                    "freq=%u MHz wait=%d ms no_cck=%d)",
6896                    drv->ifindex, freq, wait_time, no_cck);
6897
6898         buf = os_zalloc(24 + data_len);
6899         if (buf == NULL)
6900                 return ret;
6901         os_memcpy(buf + 24, data, data_len);
6902         hdr = (struct ieee80211_hdr *) buf;
6903         hdr->frame_control =
6904                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6905         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6906         os_memcpy(hdr->addr2, src, ETH_ALEN);
6907         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6908
6909         if (is_ap_interface(drv->nlmode) &&
6910             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6911              (int) freq == bss->freq || drv->device_ap_sme ||
6912              !drv->use_monitor))
6913                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6914                                                    0, freq, no_cck, 1,
6915                                                    wait_time);
6916         else
6917                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6918                                              24 + data_len,
6919                                              &drv->send_action_cookie,
6920                                              no_cck, 0, 1);
6921
6922         os_free(buf);
6923         return ret;
6924 }
6925
6926
6927 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6928 {
6929         struct i802_bss *bss = priv;
6930         struct wpa_driver_nl80211_data *drv = bss->drv;
6931         struct nl_msg *msg;
6932         int ret;
6933
6934         msg = nlmsg_alloc();
6935         if (!msg)
6936                 return;
6937
6938         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6939                    (long long unsigned int) drv->send_action_cookie);
6940         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
6941
6942         if (nl80211_set_iface_id(msg, bss) < 0)
6943                 goto nla_put_failure;
6944         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6945
6946         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6947         msg = NULL;
6948         if (ret)
6949                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6950                            "(%s)", ret, strerror(-ret));
6951
6952  nla_put_failure:
6953         nlmsg_free(msg);
6954 }
6955
6956
6957 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6958                                                 unsigned int duration)
6959 {
6960         struct i802_bss *bss = priv;
6961         struct wpa_driver_nl80211_data *drv = bss->drv;
6962         struct nl_msg *msg;
6963         int ret;
6964         u64 cookie;
6965
6966         msg = nlmsg_alloc();
6967         if (!msg)
6968                 return -1;
6969
6970         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
6971
6972         if (nl80211_set_iface_id(msg, bss) < 0)
6973                 goto nla_put_failure;
6974
6975         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6976         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6977
6978         cookie = 0;
6979         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6980         msg = NULL;
6981         if (ret == 0) {
6982                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6983                            "0x%llx for freq=%u MHz duration=%u",
6984                            (long long unsigned int) cookie, freq, duration);
6985                 drv->remain_on_chan_cookie = cookie;
6986                 drv->pending_remain_on_chan = 1;
6987                 return 0;
6988         }
6989         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6990                    "(freq=%d duration=%u): %d (%s)",
6991                    freq, duration, ret, strerror(-ret));
6992 nla_put_failure:
6993         nlmsg_free(msg);
6994         return -1;
6995 }
6996
6997
6998 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6999 {
7000         struct i802_bss *bss = priv;
7001         struct wpa_driver_nl80211_data *drv = bss->drv;
7002         struct nl_msg *msg;
7003         int ret;
7004
7005         if (!drv->pending_remain_on_chan) {
7006                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
7007                            "to cancel");
7008                 return -1;
7009         }
7010
7011         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
7012                    "0x%llx",
7013                    (long long unsigned int) drv->remain_on_chan_cookie);
7014
7015         msg = nlmsg_alloc();
7016         if (!msg)
7017                 return -1;
7018
7019         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
7020
7021         if (nl80211_set_iface_id(msg, bss) < 0)
7022                 goto nla_put_failure;
7023
7024         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
7025
7026         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7027         msg = NULL;
7028         if (ret == 0)
7029                 return 0;
7030         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
7031                    "%d (%s)", ret, strerror(-ret));
7032 nla_put_failure:
7033         nlmsg_free(msg);
7034         return -1;
7035 }
7036
7037
7038 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
7039 {
7040         struct wpa_driver_nl80211_data *drv = bss->drv;
7041
7042         if (!report) {
7043                 if (bss->nl_preq && drv->device_ap_sme &&
7044                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
7045                     !bss->static_ap) {
7046                         /*
7047                          * Do not disable Probe Request reporting that was
7048                          * enabled in nl80211_setup_ap().
7049                          */
7050                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
7051                                    "Probe Request reporting nl_preq=%p while "
7052                                    "in AP mode", bss->nl_preq);
7053                 } else if (bss->nl_preq) {
7054                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
7055                                    "reporting nl_preq=%p", bss->nl_preq);
7056                         nl80211_destroy_eloop_handle(&bss->nl_preq);
7057                 }
7058                 return 0;
7059         }
7060
7061         if (bss->nl_preq) {
7062                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7063                            "already on! nl_preq=%p", bss->nl_preq);
7064                 return 0;
7065         }
7066
7067         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
7068         if (bss->nl_preq == NULL)
7069                 return -1;
7070         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
7071                    "reporting nl_preq=%p", bss->nl_preq);
7072
7073         if (nl80211_register_frame(bss, bss->nl_preq,
7074                                    (WLAN_FC_TYPE_MGMT << 2) |
7075                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
7076                                    NULL, 0) < 0)
7077                 goto out_err;
7078
7079         nl80211_register_eloop_read(&bss->nl_preq,
7080                                     wpa_driver_nl80211_event_receive,
7081                                     bss->nl_cb);
7082
7083         return 0;
7084
7085  out_err:
7086         nl_destroy_handles(&bss->nl_preq);
7087         return -1;
7088 }
7089
7090
7091 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7092                                      int ifindex, int disabled)
7093 {
7094         struct nl_msg *msg;
7095         struct nlattr *bands, *band;
7096         int ret;
7097
7098         msg = nlmsg_alloc();
7099         if (!msg)
7100                 return -1;
7101
7102         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
7103         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7104
7105         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7106         if (!bands)
7107                 goto nla_put_failure;
7108
7109         /*
7110          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7111          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7112          * rates. All 5 GHz rates are left enabled.
7113          */
7114         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7115         if (!band)
7116                 goto nla_put_failure;
7117         if (disabled) {
7118                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7119                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7120         }
7121         nla_nest_end(msg, band);
7122
7123         nla_nest_end(msg, bands);
7124
7125         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7126         msg = NULL;
7127         if (ret) {
7128                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7129                            "(%s)", ret, strerror(-ret));
7130         } else
7131                 drv->disabled_11b_rates = disabled;
7132
7133         return ret;
7134
7135 nla_put_failure:
7136         nlmsg_free(msg);
7137         return -1;
7138 }
7139
7140
7141 static int wpa_driver_nl80211_deinit_ap(void *priv)
7142 {
7143         struct i802_bss *bss = priv;
7144         struct wpa_driver_nl80211_data *drv = bss->drv;
7145         if (!is_ap_interface(drv->nlmode))
7146                 return -1;
7147         wpa_driver_nl80211_del_beacon(drv);
7148         bss->beacon_set = 0;
7149
7150         /*
7151          * If the P2P GO interface was dynamically added, then it is
7152          * possible that the interface change to station is not possible.
7153          */
7154         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
7155                 return 0;
7156
7157         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7158 }
7159
7160
7161 static int wpa_driver_nl80211_stop_ap(void *priv)
7162 {
7163         struct i802_bss *bss = priv;
7164         struct wpa_driver_nl80211_data *drv = bss->drv;
7165         if (!is_ap_interface(drv->nlmode))
7166                 return -1;
7167         wpa_driver_nl80211_del_beacon(drv);
7168         bss->beacon_set = 0;
7169         return 0;
7170 }
7171
7172
7173 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
7174 {
7175         struct i802_bss *bss = priv;
7176         struct wpa_driver_nl80211_data *drv = bss->drv;
7177         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
7178                 return -1;
7179
7180         /*
7181          * If the P2P Client interface was dynamically added, then it is
7182          * possible that the interface change to station is not possible.
7183          */
7184         if (bss->if_dynamic)
7185                 return 0;
7186
7187         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7188 }
7189
7190
7191 static void wpa_driver_nl80211_resume(void *priv)
7192 {
7193         struct i802_bss *bss = priv;
7194
7195         if (i802_set_iface_flags(bss, 1))
7196                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
7197 }
7198
7199
7200 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7201                                   const u8 *ies, size_t ies_len)
7202 {
7203         struct i802_bss *bss = priv;
7204         struct wpa_driver_nl80211_data *drv = bss->drv;
7205         int ret;
7206         u8 *data, *pos;
7207         size_t data_len;
7208         const u8 *own_addr = bss->addr;
7209
7210         if (action != 1) {
7211                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7212                            "action %d", action);
7213                 return -1;
7214         }
7215
7216         /*
7217          * Action frame payload:
7218          * Category[1] = 6 (Fast BSS Transition)
7219          * Action[1] = 1 (Fast BSS Transition Request)
7220          * STA Address
7221          * Target AP Address
7222          * FT IEs
7223          */
7224
7225         data_len = 2 + 2 * ETH_ALEN + ies_len;
7226         data = os_malloc(data_len);
7227         if (data == NULL)
7228                 return -1;
7229         pos = data;
7230         *pos++ = 0x06; /* FT Action category */
7231         *pos++ = action;
7232         os_memcpy(pos, own_addr, ETH_ALEN);
7233         pos += ETH_ALEN;
7234         os_memcpy(pos, target_ap, ETH_ALEN);
7235         pos += ETH_ALEN;
7236         os_memcpy(pos, ies, ies_len);
7237
7238         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7239                                              drv->bssid, own_addr, drv->bssid,
7240                                              data, data_len, 0);
7241         os_free(data);
7242
7243         return ret;
7244 }
7245
7246
7247 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7248 {
7249         struct i802_bss *bss = priv;
7250         struct wpa_driver_nl80211_data *drv = bss->drv;
7251         struct nl_msg *msg;
7252         struct nlattr *cqm;
7253         int ret = -1;
7254
7255         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7256                    "hysteresis=%d", threshold, hysteresis);
7257
7258         msg = nlmsg_alloc();
7259         if (!msg)
7260                 return -1;
7261
7262         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
7263
7264         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7265
7266         cqm = nla_nest_start(msg, NL80211_ATTR_CQM);
7267         if (cqm == NULL)
7268                 goto nla_put_failure;
7269
7270         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
7271         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
7272         nla_nest_end(msg, cqm);
7273
7274         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7275         msg = NULL;
7276
7277 nla_put_failure:
7278         nlmsg_free(msg);
7279         return ret;
7280 }
7281
7282
7283 static int get_channel_width(struct nl_msg *msg, void *arg)
7284 {
7285         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7286         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7287         struct wpa_signal_info *sig_change = arg;
7288
7289         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7290                   genlmsg_attrlen(gnlh, 0), NULL);
7291
7292         sig_change->center_frq1 = -1;
7293         sig_change->center_frq2 = -1;
7294         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
7295
7296         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
7297                 sig_change->chanwidth = convert2width(
7298                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
7299                 if (tb[NL80211_ATTR_CENTER_FREQ1])
7300                         sig_change->center_frq1 =
7301                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
7302                 if (tb[NL80211_ATTR_CENTER_FREQ2])
7303                         sig_change->center_frq2 =
7304                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
7305         }
7306
7307         return NL_SKIP;
7308 }
7309
7310
7311 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
7312                                      struct wpa_signal_info *sig)
7313 {
7314         struct nl_msg *msg;
7315
7316         msg = nlmsg_alloc();
7317         if (!msg)
7318                 return -ENOMEM;
7319
7320         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE);
7321         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7322
7323         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
7324
7325 nla_put_failure:
7326         nlmsg_free(msg);
7327         return -ENOBUFS;
7328 }
7329
7330
7331 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7332 {
7333         struct i802_bss *bss = priv;
7334         struct wpa_driver_nl80211_data *drv = bss->drv;
7335         int res;
7336
7337         os_memset(si, 0, sizeof(*si));
7338         res = nl80211_get_link_signal(drv, si);
7339         if (res != 0)
7340                 return res;
7341
7342         res = nl80211_get_channel_width(drv, si);
7343         if (res != 0)
7344                 return res;
7345
7346         return nl80211_get_link_noise(drv, si);
7347 }
7348
7349
7350 static int wpa_driver_nl80211_shared_freq(void *priv)
7351 {
7352         struct i802_bss *bss = priv;
7353         struct wpa_driver_nl80211_data *drv = bss->drv;
7354         struct wpa_driver_nl80211_data *driver;
7355         int freq = 0;
7356
7357         /*
7358          * If the same PHY is in connected state with some other interface,
7359          * then retrieve the assoc freq.
7360          */
7361         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
7362                    drv->phyname);
7363
7364         dl_list_for_each(driver, &drv->global->interfaces,
7365                          struct wpa_driver_nl80211_data, list) {
7366                 if (drv == driver ||
7367                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
7368                     !driver->associated)
7369                         continue;
7370
7371                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
7372                            MACSTR,
7373                            driver->phyname, driver->first_bss->ifname,
7374                            MAC2STR(driver->first_bss->addr));
7375                 if (is_ap_interface(driver->nlmode))
7376                         freq = driver->first_bss->freq;
7377                 else
7378                         freq = nl80211_get_assoc_freq(driver);
7379                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
7380                            drv->phyname, freq);
7381         }
7382
7383         if (!freq)
7384                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
7385                            "PHY (%s) in associated state", drv->phyname);
7386
7387         return freq;
7388 }
7389
7390
7391 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7392                               int encrypt)
7393 {
7394         struct i802_bss *bss = priv;
7395         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
7396                                              0, 0, 0, 0);
7397 }
7398
7399
7400 static int nl80211_set_param(void *priv, const char *param)
7401 {
7402         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7403         if (param == NULL)
7404                 return 0;
7405
7406 #ifdef CONFIG_P2P
7407         if (os_strstr(param, "use_p2p_group_interface=1")) {
7408                 struct i802_bss *bss = priv;
7409                 struct wpa_driver_nl80211_data *drv = bss->drv;
7410
7411                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7412                            "interface");
7413                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7414                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7415         }
7416 #endif /* CONFIG_P2P */
7417
7418         if (os_strstr(param, "use_monitor=1")) {
7419                 struct i802_bss *bss = priv;
7420                 struct wpa_driver_nl80211_data *drv = bss->drv;
7421                 drv->use_monitor = 1;
7422         }
7423
7424         if (os_strstr(param, "force_connect_cmd=1")) {
7425                 struct i802_bss *bss = priv;
7426                 struct wpa_driver_nl80211_data *drv = bss->drv;
7427                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
7428                 drv->force_connect_cmd = 1;
7429         }
7430
7431         if (os_strstr(param, "no_offchannel_tx=1")) {
7432                 struct i802_bss *bss = priv;
7433                 struct wpa_driver_nl80211_data *drv = bss->drv;
7434                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
7435                 drv->test_use_roc_tx = 1;
7436         }
7437
7438         return 0;
7439 }
7440
7441
7442 static void * nl80211_global_init(void)
7443 {
7444         struct nl80211_global *global;
7445         struct netlink_config *cfg;
7446
7447         global = os_zalloc(sizeof(*global));
7448         if (global == NULL)
7449                 return NULL;
7450         global->ioctl_sock = -1;
7451         dl_list_init(&global->interfaces);
7452         global->if_add_ifindex = -1;
7453
7454         cfg = os_zalloc(sizeof(*cfg));
7455         if (cfg == NULL)
7456                 goto err;
7457
7458         cfg->ctx = global;
7459         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7460         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7461         global->netlink = netlink_init(cfg);
7462         if (global->netlink == NULL) {
7463                 os_free(cfg);
7464                 goto err;
7465         }
7466
7467         if (wpa_driver_nl80211_init_nl_global(global) < 0)
7468                 goto err;
7469
7470         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7471         if (global->ioctl_sock < 0) {
7472                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7473                            strerror(errno));
7474                 goto err;
7475         }
7476
7477         return global;
7478
7479 err:
7480         nl80211_global_deinit(global);
7481         return NULL;
7482 }
7483
7484
7485 static void nl80211_global_deinit(void *priv)
7486 {
7487         struct nl80211_global *global = priv;
7488         if (global == NULL)
7489                 return;
7490         if (!dl_list_empty(&global->interfaces)) {
7491                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7492                            "nl80211_global_deinit",
7493                            dl_list_len(&global->interfaces));
7494         }
7495
7496         if (global->netlink)
7497                 netlink_deinit(global->netlink);
7498
7499         nl_destroy_handles(&global->nl);
7500
7501         if (global->nl_event)
7502                 nl80211_destroy_eloop_handle(&global->nl_event);
7503
7504         nl_cb_put(global->nl_cb);
7505
7506         if (global->ioctl_sock >= 0)
7507                 close(global->ioctl_sock);
7508
7509         os_free(global);
7510 }
7511
7512
7513 static const char * nl80211_get_radio_name(void *priv)
7514 {
7515         struct i802_bss *bss = priv;
7516         struct wpa_driver_nl80211_data *drv = bss->drv;
7517         return drv->phyname;
7518 }
7519
7520
7521 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7522                          const u8 *pmkid)
7523 {
7524         struct nl_msg *msg;
7525
7526         msg = nlmsg_alloc();
7527         if (!msg)
7528                 return -ENOMEM;
7529
7530         nl80211_cmd(bss->drv, msg, 0, cmd);
7531
7532         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7533         if (pmkid)
7534                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
7535         if (bssid)
7536                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7537
7538         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7539  nla_put_failure:
7540         nlmsg_free(msg);
7541         return -ENOBUFS;
7542 }
7543
7544
7545 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7546 {
7547         struct i802_bss *bss = priv;
7548         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7549         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7550 }
7551
7552
7553 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7554 {
7555         struct i802_bss *bss = priv;
7556         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7557                    MAC2STR(bssid));
7558         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7559 }
7560
7561
7562 static int nl80211_flush_pmkid(void *priv)
7563 {
7564         struct i802_bss *bss = priv;
7565         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7566         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7567 }
7568
7569
7570 static void clean_survey_results(struct survey_results *survey_results)
7571 {
7572         struct freq_survey *survey, *tmp;
7573
7574         if (dl_list_empty(&survey_results->survey_list))
7575                 return;
7576
7577         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7578                               struct freq_survey, list) {
7579                 dl_list_del(&survey->list);
7580                 os_free(survey);
7581         }
7582 }
7583
7584
7585 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7586                        struct dl_list *survey_list)
7587 {
7588         struct freq_survey *survey;
7589
7590         survey = os_zalloc(sizeof(struct freq_survey));
7591         if  (!survey)
7592                 return;
7593
7594         survey->ifidx = ifidx;
7595         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7596         survey->filled = 0;
7597
7598         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7599                 survey->nf = (int8_t)
7600                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7601                 survey->filled |= SURVEY_HAS_NF;
7602         }
7603
7604         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7605                 survey->channel_time =
7606                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7607                 survey->filled |= SURVEY_HAS_CHAN_TIME;
7608         }
7609
7610         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7611                 survey->channel_time_busy =
7612                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7613                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7614         }
7615
7616         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7617                 survey->channel_time_rx =
7618                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7619                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7620         }
7621
7622         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7623                 survey->channel_time_tx =
7624                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7625                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7626         }
7627
7628         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)",
7629                    survey->freq,
7630                    survey->nf,
7631                    (unsigned long int) survey->channel_time,
7632                    (unsigned long int) survey->channel_time_busy,
7633                    (unsigned long int) survey->channel_time_tx,
7634                    (unsigned long int) survey->channel_time_rx,
7635                    survey->filled);
7636
7637         dl_list_add_tail(survey_list, &survey->list);
7638 }
7639
7640
7641 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7642                            unsigned int freq_filter)
7643 {
7644         if (!freq_filter)
7645                 return 1;
7646
7647         return freq_filter == surveyed_freq;
7648 }
7649
7650
7651 static int survey_handler(struct nl_msg *msg, void *arg)
7652 {
7653         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7654         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7655         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7656         struct survey_results *survey_results;
7657         u32 surveyed_freq = 0;
7658         u32 ifidx;
7659
7660         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7661                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7662                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7663         };
7664
7665         survey_results = (struct survey_results *) arg;
7666
7667         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7668                   genlmsg_attrlen(gnlh, 0), NULL);
7669
7670         if (!tb[NL80211_ATTR_IFINDEX])
7671                 return NL_SKIP;
7672
7673         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7674
7675         if (!tb[NL80211_ATTR_SURVEY_INFO])
7676                 return NL_SKIP;
7677
7678         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7679                              tb[NL80211_ATTR_SURVEY_INFO],
7680                              survey_policy))
7681                 return NL_SKIP;
7682
7683         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7684                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7685                 return NL_SKIP;
7686         }
7687
7688         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7689
7690         if (!check_survey_ok(sinfo, surveyed_freq,
7691                              survey_results->freq_filter))
7692                 return NL_SKIP;
7693
7694         if (survey_results->freq_filter &&
7695             survey_results->freq_filter != surveyed_freq) {
7696                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7697                            surveyed_freq);
7698                 return NL_SKIP;
7699         }
7700
7701         add_survey(sinfo, ifidx, &survey_results->survey_list);
7702
7703         return NL_SKIP;
7704 }
7705
7706
7707 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7708 {
7709         struct i802_bss *bss = priv;
7710         struct wpa_driver_nl80211_data *drv = bss->drv;
7711         struct nl_msg *msg;
7712         int err = -ENOBUFS;
7713         union wpa_event_data data;
7714         struct survey_results *survey_results;
7715
7716         os_memset(&data, 0, sizeof(data));
7717         survey_results = &data.survey_results;
7718
7719         dl_list_init(&survey_results->survey_list);
7720
7721         msg = nlmsg_alloc();
7722         if (!msg)
7723                 goto nla_put_failure;
7724
7725         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7726
7727         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7728
7729         if (freq)
7730                 data.survey_results.freq_filter = freq;
7731
7732         do {
7733                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7734                 err = send_and_recv_msgs(drv, msg, survey_handler,
7735                                          survey_results);
7736         } while (err > 0);
7737
7738         if (err) {
7739                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7740                 goto out_clean;
7741         }
7742
7743         wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7744
7745 out_clean:
7746         clean_survey_results(survey_results);
7747 nla_put_failure:
7748         return err;
7749 }
7750
7751
7752 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7753                                    const u8 *replay_ctr)
7754 {
7755         struct i802_bss *bss = priv;
7756         struct wpa_driver_nl80211_data *drv = bss->drv;
7757         struct nlattr *replay_nested;
7758         struct nl_msg *msg;
7759
7760         msg = nlmsg_alloc();
7761         if (!msg)
7762                 return;
7763
7764         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7765
7766         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7767
7768         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7769         if (!replay_nested)
7770                 goto nla_put_failure;
7771
7772         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
7773         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
7774         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7775                 replay_ctr);
7776
7777         nla_nest_end(msg, replay_nested);
7778
7779         send_and_recv_msgs(drv, msg, NULL, NULL);
7780         return;
7781  nla_put_failure:
7782         nlmsg_free(msg);
7783 }
7784
7785
7786 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7787                                     const u8 *addr, int qos)
7788 {
7789         /* send data frame to poll STA and check whether
7790          * this frame is ACKed */
7791         struct {
7792                 struct ieee80211_hdr hdr;
7793                 u16 qos_ctl;
7794         } STRUCT_PACKED nulldata;
7795         size_t size;
7796
7797         /* Send data frame to poll STA and check whether this frame is ACKed */
7798
7799         os_memset(&nulldata, 0, sizeof(nulldata));
7800
7801         if (qos) {
7802                 nulldata.hdr.frame_control =
7803                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7804                                      WLAN_FC_STYPE_QOS_NULL);
7805                 size = sizeof(nulldata);
7806         } else {
7807                 nulldata.hdr.frame_control =
7808                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7809                                      WLAN_FC_STYPE_NULLFUNC);
7810                 size = sizeof(struct ieee80211_hdr);
7811         }
7812
7813         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7814         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7815         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7816         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7817
7818         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7819                                          0, 0) < 0)
7820                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7821                            "send poll frame");
7822 }
7823
7824 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7825                                 int qos)
7826 {
7827         struct i802_bss *bss = priv;
7828         struct wpa_driver_nl80211_data *drv = bss->drv;
7829         struct nl_msg *msg;
7830
7831         if (!drv->poll_command_supported) {
7832                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7833                 return;
7834         }
7835
7836         msg = nlmsg_alloc();
7837         if (!msg)
7838                 return;
7839
7840         nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
7841
7842         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7843         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7844
7845         send_and_recv_msgs(drv, msg, NULL, NULL);
7846         return;
7847  nla_put_failure:
7848         nlmsg_free(msg);
7849 }
7850
7851
7852 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7853 {
7854         struct nl_msg *msg;
7855
7856         msg = nlmsg_alloc();
7857         if (!msg)
7858                 return -ENOMEM;
7859
7860         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
7861         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7862         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
7863                     enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
7864         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7865 nla_put_failure:
7866         nlmsg_free(msg);
7867         return -ENOBUFS;
7868 }
7869
7870
7871 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7872                                      int ctwindow)
7873 {
7874         struct i802_bss *bss = priv;
7875
7876         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7877                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7878
7879         if (opp_ps != -1 || ctwindow != -1) {
7880 #ifdef ANDROID_P2P
7881                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7882 #else /* ANDROID_P2P */
7883                 return -1; /* Not yet supported */
7884 #endif /* ANDROID_P2P */
7885         }
7886
7887         if (legacy_ps == -1)
7888                 return 0;
7889         if (legacy_ps != 0 && legacy_ps != 1)
7890                 return -1; /* Not yet supported */
7891
7892         return nl80211_set_power_save(bss, legacy_ps);
7893 }
7894
7895
7896 static int nl80211_start_radar_detection(void *priv,
7897                                          struct hostapd_freq_params *freq)
7898 {
7899         struct i802_bss *bss = priv;
7900         struct wpa_driver_nl80211_data *drv = bss->drv;
7901         struct nl_msg *msg;
7902         int ret;
7903
7904         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)",
7905                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7906                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7907
7908         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7909                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7910                            "detection");
7911                 return -1;
7912         }
7913
7914         msg = nlmsg_alloc();
7915         if (!msg)
7916                 return -1;
7917
7918         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT);
7919         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7920
7921         if (nl80211_put_freq_params(msg, freq) < 0)
7922                 goto nla_put_failure;
7923
7924         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7925         msg = NULL;
7926         if (ret == 0)
7927                 return 0;
7928         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7929                    "%d (%s)", ret, strerror(-ret));
7930 nla_put_failure:
7931         nlmsg_free(msg);
7932         return -1;
7933 }
7934
7935 #ifdef CONFIG_TDLS
7936
7937 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7938                                   u8 dialog_token, u16 status_code,
7939                                   u32 peer_capab, int initiator, const u8 *buf,
7940                                   size_t len)
7941 {
7942         struct i802_bss *bss = priv;
7943         struct wpa_driver_nl80211_data *drv = bss->drv;
7944         struct nl_msg *msg;
7945
7946         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7947                 return -EOPNOTSUPP;
7948
7949         if (!dst)
7950                 return -EINVAL;
7951
7952         msg = nlmsg_alloc();
7953         if (!msg)
7954                 return -ENOMEM;
7955
7956         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
7957         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7958         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
7959         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
7960         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
7961         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
7962         if (peer_capab) {
7963                 /*
7964                  * The internal enum tdls_peer_capability definition is
7965                  * currently identical with the nl80211 enum
7966                  * nl80211_tdls_peer_capability, so no conversion is needed
7967                  * here.
7968                  */
7969                 NLA_PUT_U32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY, peer_capab);
7970         }
7971         if (initiator)
7972                 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_INITIATOR);
7973         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
7974
7975         return send_and_recv_msgs(drv, msg, NULL, NULL);
7976
7977 nla_put_failure:
7978         nlmsg_free(msg);
7979         return -ENOBUFS;
7980 }
7981
7982
7983 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7984 {
7985         struct i802_bss *bss = priv;
7986         struct wpa_driver_nl80211_data *drv = bss->drv;
7987         struct nl_msg *msg;
7988         enum nl80211_tdls_operation nl80211_oper;
7989
7990         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7991                 return -EOPNOTSUPP;
7992
7993         switch (oper) {
7994         case TDLS_DISCOVERY_REQ:
7995                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7996                 break;
7997         case TDLS_SETUP:
7998                 nl80211_oper = NL80211_TDLS_SETUP;
7999                 break;
8000         case TDLS_TEARDOWN:
8001                 nl80211_oper = NL80211_TDLS_TEARDOWN;
8002                 break;
8003         case TDLS_ENABLE_LINK:
8004                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8005                 break;
8006         case TDLS_DISABLE_LINK:
8007                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8008                 break;
8009         case TDLS_ENABLE:
8010                 return 0;
8011         case TDLS_DISABLE:
8012                 return 0;
8013         default:
8014                 return -EINVAL;
8015         }
8016
8017         msg = nlmsg_alloc();
8018         if (!msg)
8019                 return -ENOMEM;
8020
8021         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8022         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8023         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8024         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8025
8026         return send_and_recv_msgs(drv, msg, NULL, NULL);
8027
8028 nla_put_failure:
8029         nlmsg_free(msg);
8030         return -ENOBUFS;
8031 }
8032
8033 #endif /* CONFIG TDLS */
8034
8035
8036 static int driver_nl80211_set_key(const char *ifname, void *priv,
8037                                   enum wpa_alg alg, const u8 *addr,
8038                                   int key_idx, int set_tx,
8039                                   const u8 *seq, size_t seq_len,
8040                                   const u8 *key, size_t key_len)
8041 {
8042         struct i802_bss *bss = priv;
8043         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
8044                                           set_tx, seq, seq_len, key, key_len);
8045 }
8046
8047
8048 static int driver_nl80211_scan2(void *priv,
8049                                 struct wpa_driver_scan_params *params)
8050 {
8051         struct i802_bss *bss = priv;
8052         return wpa_driver_nl80211_scan(bss, params);
8053 }
8054
8055
8056 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
8057                                          int reason_code)
8058 {
8059         struct i802_bss *bss = priv;
8060         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
8061 }
8062
8063
8064 static int driver_nl80211_authenticate(void *priv,
8065                                        struct wpa_driver_auth_params *params)
8066 {
8067         struct i802_bss *bss = priv;
8068         return wpa_driver_nl80211_authenticate(bss, params);
8069 }
8070
8071
8072 static void driver_nl80211_deinit(void *priv)
8073 {
8074         struct i802_bss *bss = priv;
8075         wpa_driver_nl80211_deinit(bss);
8076 }
8077
8078
8079 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
8080                                     const char *ifname)
8081 {
8082         struct i802_bss *bss = priv;
8083         return wpa_driver_nl80211_if_remove(bss, type, ifname);
8084 }
8085
8086
8087 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
8088                                     size_t data_len, int noack)
8089 {
8090         struct i802_bss *bss = priv;
8091         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
8092                                             0, 0, 0, 0);
8093 }
8094
8095
8096 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
8097 {
8098         struct i802_bss *bss = priv;
8099         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
8100 }
8101
8102
8103 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
8104                                        const char *ifname, int vlan_id)
8105 {
8106         struct i802_bss *bss = priv;
8107         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
8108 }
8109
8110
8111 static int driver_nl80211_read_sta_data(void *priv,
8112                                         struct hostap_sta_driver_data *data,
8113                                         const u8 *addr)
8114 {
8115         struct i802_bss *bss = priv;
8116         return i802_read_sta_data(bss, data, addr);
8117 }
8118
8119
8120 static int driver_nl80211_send_action(void *priv, unsigned int freq,
8121                                       unsigned int wait_time,
8122                                       const u8 *dst, const u8 *src,
8123                                       const u8 *bssid,
8124                                       const u8 *data, size_t data_len,
8125                                       int no_cck)
8126 {
8127         struct i802_bss *bss = priv;
8128         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
8129                                               bssid, data, data_len, no_cck);
8130 }
8131
8132
8133 static int driver_nl80211_probe_req_report(void *priv, int report)
8134 {
8135         struct i802_bss *bss = priv;
8136         return wpa_driver_nl80211_probe_req_report(bss, report);
8137 }
8138
8139
8140 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
8141                                             const u8 *ies, size_t ies_len)
8142 {
8143         int ret;
8144         struct nl_msg *msg;
8145         struct i802_bss *bss = priv;
8146         struct wpa_driver_nl80211_data *drv = bss->drv;
8147         u16 mdid = WPA_GET_LE16(md);
8148
8149         msg = nlmsg_alloc();
8150         if (!msg)
8151                 return -ENOMEM;
8152
8153         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
8154         nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES);
8155         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8156         NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies);
8157         NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid);
8158
8159         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8160         if (ret) {
8161                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
8162                            "err=%d (%s)", ret, strerror(-ret));
8163         }
8164
8165         return ret;
8166
8167 nla_put_failure:
8168         nlmsg_free(msg);
8169         return -ENOBUFS;
8170 }
8171
8172
8173 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
8174 {
8175         struct i802_bss *bss = priv;
8176         struct wpa_driver_nl80211_data *drv = bss->drv;
8177
8178         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
8179                 return NULL;
8180
8181         return bss->addr;
8182 }
8183
8184
8185 static const char * scan_state_str(enum scan_states scan_state)
8186 {
8187         switch (scan_state) {
8188         case NO_SCAN:
8189                 return "NO_SCAN";
8190         case SCAN_REQUESTED:
8191                 return "SCAN_REQUESTED";
8192         case SCAN_STARTED:
8193                 return "SCAN_STARTED";
8194         case SCAN_COMPLETED:
8195                 return "SCAN_COMPLETED";
8196         case SCAN_ABORTED:
8197                 return "SCAN_ABORTED";
8198         case SCHED_SCAN_STARTED:
8199                 return "SCHED_SCAN_STARTED";
8200         case SCHED_SCAN_STOPPED:
8201                 return "SCHED_SCAN_STOPPED";
8202         case SCHED_SCAN_RESULTS:
8203                 return "SCHED_SCAN_RESULTS";
8204         }
8205
8206         return "??";
8207 }
8208
8209
8210 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
8211 {
8212         struct i802_bss *bss = priv;
8213         struct wpa_driver_nl80211_data *drv = bss->drv;
8214         int res;
8215         char *pos, *end;
8216
8217         pos = buf;
8218         end = buf + buflen;
8219
8220         res = os_snprintf(pos, end - pos,
8221                           "ifindex=%d\n"
8222                           "ifname=%s\n"
8223                           "brname=%s\n"
8224                           "addr=" MACSTR "\n"
8225                           "freq=%d\n"
8226                           "%s%s%s%s%s",
8227                           bss->ifindex,
8228                           bss->ifname,
8229                           bss->brname,
8230                           MAC2STR(bss->addr),
8231                           bss->freq,
8232                           bss->beacon_set ? "beacon_set=1\n" : "",
8233                           bss->added_if_into_bridge ?
8234                           "added_if_into_bridge=1\n" : "",
8235                           bss->added_bridge ? "added_bridge=1\n" : "",
8236                           bss->in_deinit ? "in_deinit=1\n" : "",
8237                           bss->if_dynamic ? "if_dynamic=1\n" : "");
8238         if (res < 0 || res >= end - pos)
8239                 return pos - buf;
8240         pos += res;
8241
8242         if (bss->wdev_id_set) {
8243                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
8244                                   (unsigned long long) bss->wdev_id);
8245                 if (res < 0 || res >= end - pos)
8246                         return pos - buf;
8247                 pos += res;
8248         }
8249
8250         res = os_snprintf(pos, end - pos,
8251                           "phyname=%s\n"
8252                           "perm_addr=" MACSTR "\n"
8253                           "drv_ifindex=%d\n"
8254                           "operstate=%d\n"
8255                           "scan_state=%s\n"
8256                           "auth_bssid=" MACSTR "\n"
8257                           "auth_attempt_bssid=" MACSTR "\n"
8258                           "bssid=" MACSTR "\n"
8259                           "prev_bssid=" MACSTR "\n"
8260                           "associated=%d\n"
8261                           "assoc_freq=%u\n"
8262                           "monitor_sock=%d\n"
8263                           "monitor_ifidx=%d\n"
8264                           "monitor_refcount=%d\n"
8265                           "last_mgmt_freq=%u\n"
8266                           "eapol_tx_sock=%d\n"
8267                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
8268                           drv->phyname,
8269                           MAC2STR(drv->perm_addr),
8270                           drv->ifindex,
8271                           drv->operstate,
8272                           scan_state_str(drv->scan_state),
8273                           MAC2STR(drv->auth_bssid),
8274                           MAC2STR(drv->auth_attempt_bssid),
8275                           MAC2STR(drv->bssid),
8276                           MAC2STR(drv->prev_bssid),
8277                           drv->associated,
8278                           drv->assoc_freq,
8279                           drv->monitor_sock,
8280                           drv->monitor_ifidx,
8281                           drv->monitor_refcount,
8282                           drv->last_mgmt_freq,
8283                           drv->eapol_tx_sock,
8284                           drv->ignore_if_down_event ?
8285                           "ignore_if_down_event=1\n" : "",
8286                           drv->scan_complete_events ?
8287                           "scan_complete_events=1\n" : "",
8288                           drv->disabled_11b_rates ?
8289                           "disabled_11b_rates=1\n" : "",
8290                           drv->pending_remain_on_chan ?
8291                           "pending_remain_on_chan=1\n" : "",
8292                           drv->in_interface_list ? "in_interface_list=1\n" : "",
8293                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
8294                           drv->poll_command_supported ?
8295                           "poll_command_supported=1\n" : "",
8296                           drv->data_tx_status ? "data_tx_status=1\n" : "",
8297                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
8298                           drv->retry_auth ? "retry_auth=1\n" : "",
8299                           drv->use_monitor ? "use_monitor=1\n" : "",
8300                           drv->ignore_next_local_disconnect ?
8301                           "ignore_next_local_disconnect=1\n" : "",
8302                           drv->ignore_next_local_deauth ?
8303                           "ignore_next_local_deauth=1\n" : "");
8304         if (res < 0 || res >= end - pos)
8305                 return pos - buf;
8306         pos += res;
8307
8308         if (drv->has_capability) {
8309                 res = os_snprintf(pos, end - pos,
8310                                   "capa.key_mgmt=0x%x\n"
8311                                   "capa.enc=0x%x\n"
8312                                   "capa.auth=0x%x\n"
8313                                   "capa.flags=0x%llx\n"
8314                                   "capa.max_scan_ssids=%d\n"
8315                                   "capa.max_sched_scan_ssids=%d\n"
8316                                   "capa.sched_scan_supported=%d\n"
8317                                   "capa.max_match_sets=%d\n"
8318                                   "capa.max_remain_on_chan=%u\n"
8319                                   "capa.max_stations=%u\n"
8320                                   "capa.probe_resp_offloads=0x%x\n"
8321                                   "capa.max_acl_mac_addrs=%u\n"
8322                                   "capa.num_multichan_concurrent=%u\n",
8323                                   drv->capa.key_mgmt,
8324                                   drv->capa.enc,
8325                                   drv->capa.auth,
8326                                   (unsigned long long) drv->capa.flags,
8327                                   drv->capa.max_scan_ssids,
8328                                   drv->capa.max_sched_scan_ssids,
8329                                   drv->capa.sched_scan_supported,
8330                                   drv->capa.max_match_sets,
8331                                   drv->capa.max_remain_on_chan,
8332                                   drv->capa.max_stations,
8333                                   drv->capa.probe_resp_offloads,
8334                                   drv->capa.max_acl_mac_addrs,
8335                                   drv->capa.num_multichan_concurrent);
8336                 if (res < 0 || res >= end - pos)
8337                         return pos - buf;
8338                 pos += res;
8339         }
8340
8341         return pos - buf;
8342 }
8343
8344
8345 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
8346 {
8347         if (settings->head)
8348                 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD,
8349                         settings->head_len, settings->head);
8350
8351         if (settings->tail)
8352                 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL,
8353                         settings->tail_len, settings->tail);
8354
8355         if (settings->beacon_ies)
8356                 NLA_PUT(msg, NL80211_ATTR_IE,
8357                         settings->beacon_ies_len, settings->beacon_ies);
8358
8359         if (settings->proberesp_ies)
8360                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
8361                         settings->proberesp_ies_len, settings->proberesp_ies);
8362
8363         if (settings->assocresp_ies)
8364                 NLA_PUT(msg,
8365                         NL80211_ATTR_IE_ASSOC_RESP,
8366                         settings->assocresp_ies_len, settings->assocresp_ies);
8367
8368         if (settings->probe_resp)
8369                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP,
8370                         settings->probe_resp_len, settings->probe_resp);
8371
8372         return 0;
8373
8374 nla_put_failure:
8375         return -ENOBUFS;
8376 }
8377
8378
8379 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
8380 {
8381         struct nl_msg *msg;
8382         struct i802_bss *bss = priv;
8383         struct wpa_driver_nl80211_data *drv = bss->drv;
8384         struct nlattr *beacon_csa;
8385         int ret = -ENOBUFS;
8386
8387         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
8388                    settings->cs_count, settings->block_tx,
8389                    settings->freq_params.freq, settings->freq_params.bandwidth,
8390                    settings->freq_params.center_freq1,
8391                    settings->freq_params.center_freq2);
8392
8393         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8394                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
8395                 return -EOPNOTSUPP;
8396         }
8397
8398         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
8399             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
8400                 return -EOPNOTSUPP;
8401
8402         /* check settings validity */
8403         if (!settings->beacon_csa.tail ||
8404             ((settings->beacon_csa.tail_len <=
8405               settings->counter_offset_beacon) ||
8406              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
8407               settings->cs_count)))
8408                 return -EINVAL;
8409
8410         if (settings->beacon_csa.probe_resp &&
8411             ((settings->beacon_csa.probe_resp_len <=
8412               settings->counter_offset_presp) ||
8413              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
8414               settings->cs_count)))
8415                 return -EINVAL;
8416
8417         msg = nlmsg_alloc();
8418         if (!msg)
8419                 return -ENOMEM;
8420
8421         nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH);
8422         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8423         NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, settings->cs_count);
8424         ret = nl80211_put_freq_params(msg, &settings->freq_params);
8425         if (ret)
8426                 goto error;
8427
8428         if (settings->block_tx)
8429                 NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX);
8430
8431         /* beacon_after params */
8432         ret = set_beacon_data(msg, &settings->beacon_after);
8433         if (ret)
8434                 goto error;
8435
8436         /* beacon_csa params */
8437         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8438         if (!beacon_csa)
8439                 goto nla_put_failure;
8440
8441         ret = set_beacon_data(msg, &settings->beacon_csa);
8442         if (ret)
8443                 goto error;
8444
8445         NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8446                     settings->counter_offset_beacon);
8447
8448         if (settings->beacon_csa.probe_resp)
8449                 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8450                             settings->counter_offset_presp);
8451
8452         nla_nest_end(msg, beacon_csa);
8453         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8454         if (ret) {
8455                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8456                            ret, strerror(-ret));
8457         }
8458         return ret;
8459
8460 nla_put_failure:
8461         ret = -ENOBUFS;
8462 error:
8463         nlmsg_free(msg);
8464         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8465         return ret;
8466 }
8467
8468
8469 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8470                           u8 user_priority, u16 admitted_time)
8471 {
8472         struct i802_bss *bss = priv;
8473         struct wpa_driver_nl80211_data *drv = bss->drv;
8474         struct nl_msg *msg;
8475         int ret;
8476
8477         wpa_printf(MSG_DEBUG,
8478                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8479                    tsid, admitted_time, user_priority);
8480
8481         if (!is_sta_interface(drv->nlmode))
8482                 return -ENOTSUP;
8483
8484         msg = nlmsg_alloc();
8485         if (!msg)
8486                 return -ENOMEM;
8487
8488         nl80211_cmd(drv, msg, 0, NL80211_CMD_ADD_TX_TS);
8489         if (nl80211_set_iface_id(msg, bss) < 0)
8490                 goto nla_put_failure;
8491
8492         NLA_PUT_U8(msg, NL80211_ATTR_TSID, tsid);
8493         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8494         NLA_PUT_U8(msg, NL80211_ATTR_USER_PRIO, user_priority);
8495         NLA_PUT_U16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time);
8496
8497         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8498         if (ret)
8499                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8500                            ret, strerror(-ret));
8501         return ret;
8502
8503 nla_put_failure:
8504         nlmsg_free(msg);
8505         return -ENOBUFS;
8506 }
8507
8508
8509 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8510 {
8511         struct i802_bss *bss = priv;
8512         struct wpa_driver_nl80211_data *drv = bss->drv;
8513         struct nl_msg *msg;
8514         int ret;
8515
8516         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8517
8518         if (!is_sta_interface(drv->nlmode))
8519                 return -ENOTSUP;
8520
8521         msg = nlmsg_alloc();
8522         if (!msg)
8523                 return -ENOMEM;
8524
8525         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_TX_TS);
8526         if (nl80211_set_iface_id(msg, bss) < 0)
8527                 goto nla_put_failure;
8528
8529         NLA_PUT_U8(msg, NL80211_ATTR_TSID, tsid);
8530         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8531
8532         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8533         if (ret)
8534                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8535                            ret, strerror(-ret));
8536         return ret;
8537
8538 nla_put_failure:
8539         nlmsg_free(msg);
8540         return -ENOBUFS;
8541 }
8542
8543
8544 #ifdef CONFIG_TESTING_OPTIONS
8545 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8546 {
8547         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8548         struct wpabuf *buf = arg;
8549
8550         if (!buf)
8551                 return NL_SKIP;
8552
8553         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8554                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8555                 return NL_SKIP;
8556         }
8557
8558         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8559                         genlmsg_attrlen(gnlh, 0));
8560
8561         return NL_SKIP;
8562 }
8563 #endif /* CONFIG_TESTING_OPTIONS */
8564
8565
8566 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8567 {
8568         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8569         struct nlattr *nl_vendor_reply, *nl;
8570         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8571         struct wpabuf *buf = arg;
8572         int rem;
8573
8574         if (!buf)
8575                 return NL_SKIP;
8576
8577         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8578                   genlmsg_attrlen(gnlh, 0), NULL);
8579         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8580
8581         if (!nl_vendor_reply)
8582                 return NL_SKIP;
8583
8584         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8585                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8586                 return NL_SKIP;
8587         }
8588
8589         nla_for_each_nested(nl, nl_vendor_reply, rem) {
8590                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8591         }
8592
8593         return NL_SKIP;
8594 }
8595
8596
8597 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8598                               unsigned int subcmd, const u8 *data,
8599                               size_t data_len, struct wpabuf *buf)
8600 {
8601         struct i802_bss *bss = priv;
8602         struct wpa_driver_nl80211_data *drv = bss->drv;
8603         struct nl_msg *msg;
8604         int ret;
8605
8606         msg = nlmsg_alloc();
8607         if (!msg)
8608                 return -ENOMEM;
8609
8610 #ifdef CONFIG_TESTING_OPTIONS
8611         if (vendor_id == 0xffffffff) {
8612                 nl80211_cmd(drv, msg, 0, subcmd);
8613                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8614                     0)
8615                         goto nla_put_failure;
8616                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8617                 if (ret)
8618                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8619                                    ret);
8620                 return ret;
8621         }
8622 #endif /* CONFIG_TESTING_OPTIONS */
8623
8624         nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8625         if (nl80211_set_iface_id(msg, bss) < 0)
8626                 goto nla_put_failure;
8627         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, vendor_id);
8628         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd);
8629         if (data)
8630                 NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, data_len, data);
8631
8632         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8633         if (ret)
8634                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8635                            ret);
8636         return ret;
8637
8638 nla_put_failure:
8639         nlmsg_free(msg);
8640         return -ENOBUFS;
8641 }
8642
8643
8644 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8645                                u8 qos_map_set_len)
8646 {
8647         struct i802_bss *bss = priv;
8648         struct wpa_driver_nl80211_data *drv = bss->drv;
8649         struct nl_msg *msg;
8650         int ret;
8651
8652         msg = nlmsg_alloc();
8653         if (!msg)
8654                 return -ENOMEM;
8655
8656         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8657                     qos_map_set, qos_map_set_len);
8658
8659         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_QOS_MAP);
8660         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8661         NLA_PUT(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set);
8662
8663         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8664         if (ret)
8665                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8666
8667         return ret;
8668
8669 nla_put_failure:
8670         nlmsg_free(msg);
8671         return -ENOBUFS;
8672 }
8673
8674
8675 static int nl80211_set_wowlan(void *priv,
8676                               const struct wowlan_triggers *triggers)
8677 {
8678         struct i802_bss *bss = priv;
8679         struct wpa_driver_nl80211_data *drv = bss->drv;
8680         struct nl_msg *msg;
8681         struct nlattr *wowlan_triggers;
8682         int ret;
8683
8684         msg = nlmsg_alloc();
8685         if (!msg)
8686                 return -ENOMEM;
8687
8688         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8689
8690         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WOWLAN);
8691         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8692
8693         wowlan_triggers = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8694         if (!wowlan_triggers)
8695                 goto nla_put_failure;
8696
8697         if (triggers->any)
8698                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
8699         if (triggers->disconnect)
8700                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
8701         if (triggers->magic_pkt)
8702                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
8703         if (triggers->gtk_rekey_failure)
8704                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
8705         if (triggers->eap_identity_req)
8706                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
8707         if (triggers->four_way_handshake)
8708                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
8709         if (triggers->rfkill_release)
8710                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
8711
8712         nla_nest_end(msg, wowlan_triggers);
8713
8714         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8715         if (ret)
8716                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8717
8718         return ret;
8719
8720 nla_put_failure:
8721         nlmsg_free(msg);
8722         return -ENOBUFS;
8723 }
8724
8725
8726 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8727 {
8728         struct i802_bss *bss = priv;
8729         struct wpa_driver_nl80211_data *drv = bss->drv;
8730         struct nl_msg *msg;
8731         struct nlattr *params;
8732
8733         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8734
8735         if (!drv->roaming_vendor_cmd_avail) {
8736                 wpa_printf(MSG_DEBUG,
8737                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8738                 return -1;
8739         }
8740
8741         msg = nlmsg_alloc();
8742         if (!msg)
8743                 return -ENOMEM;
8744
8745         nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8746
8747         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8748         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
8749         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8750                     QCA_NL80211_VENDOR_SUBCMD_ROAMING);
8751
8752         params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
8753         if (!params)
8754                 goto nla_put_failure;
8755         NLA_PUT_U32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8756                     allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8757                     QCA_ROAMING_NOT_ALLOWED);
8758         if (bssid)
8759                 NLA_PUT(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid);
8760         nla_nest_end(msg, params);
8761
8762         return send_and_recv_msgs(drv, msg, NULL, NULL);
8763
8764  nla_put_failure:
8765         nlmsg_free(msg);
8766         return -1;
8767 }
8768
8769
8770 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8771 {
8772         struct i802_bss *bss = priv;
8773         struct wpa_driver_nl80211_data *drv = bss->drv;
8774         int new_addr = addr != NULL;
8775
8776         if (!addr)
8777                 addr = drv->perm_addr;
8778
8779         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8780                 return -1;
8781
8782         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8783         {
8784                 wpa_printf(MSG_DEBUG,
8785                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8786                            bss->ifname, MAC2STR(addr));
8787                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8788                                           1) < 0) {
8789                         wpa_printf(MSG_DEBUG,
8790                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8791                 }
8792                 return -1;
8793         }
8794
8795         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8796                    bss->ifname, MAC2STR(addr));
8797         drv->addr_changed = new_addr;
8798         os_memcpy(bss->addr, addr, ETH_ALEN);
8799
8800         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8801         {
8802                 wpa_printf(MSG_DEBUG,
8803                            "nl80211: Could not restore interface UP after set_mac_addr");
8804         }
8805
8806         return 0;
8807 }
8808
8809
8810 #ifdef CONFIG_MESH
8811
8812 static int wpa_driver_nl80211_init_mesh(void *priv)
8813 {
8814         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8815                 wpa_printf(MSG_INFO,
8816                            "nl80211: Failed to set interface into mesh mode");
8817                 return -1;
8818         }
8819         return 0;
8820 }
8821
8822
8823 static int
8824 wpa_driver_nl80211_join_mesh(void *priv,
8825                              struct wpa_driver_mesh_join_params *params)
8826 {
8827         struct i802_bss *bss = priv;
8828         struct wpa_driver_nl80211_data *drv = bss->drv;
8829         struct nl_msg *msg;
8830         struct nlattr *container;
8831         int ret = 0;
8832
8833         msg = nlmsg_alloc();
8834         if (!msg)
8835                 return -1;
8836
8837         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8838         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_MESH);
8839
8840         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8841         if (params->freq) {
8842                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8843                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8844         }
8845
8846         if (params->ht_mode) {
8847                 unsigned int ht_value;
8848                 char *ht_mode = "";
8849
8850                 switch (params->ht_mode) {
8851                 default:
8852                 case CHAN_NO_HT:
8853                         ht_value = NL80211_CHAN_NO_HT;
8854                         ht_mode = "NOHT";
8855                         break;
8856                 case CHAN_HT20:
8857                         ht_value = NL80211_CHAN_HT20;
8858                         ht_mode = "HT20";
8859                         break;
8860                 case CHAN_HT40PLUS:
8861                         ht_value = NL80211_CHAN_HT40PLUS;
8862                         ht_mode = "HT40+";
8863                         break;
8864                 case CHAN_HT40MINUS:
8865                         ht_value = NL80211_CHAN_HT40MINUS;
8866                         ht_mode = "HT40-";
8867                         break;
8868                 }
8869                 wpa_printf(MSG_DEBUG, "  * ht_mode=%s", ht_mode);
8870                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ht_value);
8871         }
8872
8873         if (params->basic_rates) {
8874                 u8 rates[NL80211_MAX_SUPP_RATES];
8875                 u8 rates_len = 0;
8876                 int i;
8877
8878                 for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
8879                         if (params->basic_rates[i] < 0)
8880                                 break;
8881                         rates[rates_len++] = params->basic_rates[i] / 5;
8882                 }
8883
8884                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
8885         }
8886
8887         if (params->meshid) {
8888                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8889                                   params->meshid, params->meshid_len);
8890                 NLA_PUT(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
8891                         params->meshid);
8892         }
8893
8894         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8895
8896         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8897         if (!container)
8898                 goto nla_put_failure;
8899
8900         if (params->ies) {
8901                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8902                 NLA_PUT(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8903                         params->ies);
8904         }
8905         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8906         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8907                 NLA_PUT_U8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1);
8908                 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AUTH);
8909         }
8910         if (params->flags & WPA_DRIVER_MESH_FLAG_AMPE)
8911                 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AMPE);
8912         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8913                 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_MPM);
8914         nla_nest_end(msg, container);
8915
8916         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8917         if (!container)
8918                 goto nla_put_failure;
8919
8920         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS))
8921                 NLA_PUT_U32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0);
8922         nla_nest_end(msg, container);
8923
8924         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8925         msg = NULL;
8926         if (ret) {
8927                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8928                            ret, strerror(-ret));
8929                 goto nla_put_failure;
8930         }
8931         ret = 0;
8932         bss->freq = params->freq;
8933         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8934
8935
8936 nla_put_failure:
8937         nlmsg_free(msg);
8938         return ret;
8939 }
8940
8941
8942 static int wpa_driver_nl80211_leave_mesh(void *priv)
8943 {
8944         struct i802_bss *bss = priv;
8945         struct wpa_driver_nl80211_data *drv = bss->drv;
8946         struct nl_msg *msg;
8947         int ret = 0;
8948
8949         msg = nlmsg_alloc();
8950         if (!msg)
8951                 return -1;
8952
8953         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8954         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_MESH);
8955         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8956
8957         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8958         msg = NULL;
8959         if (ret) {
8960                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8961                            ret, strerror(-ret));
8962                 goto nla_put_failure;
8963         }
8964         ret = 0;
8965         wpa_printf(MSG_DEBUG, "nl80211: mesh leave request send successfully");
8966
8967 nla_put_failure:
8968         nlmsg_free(msg);
8969         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8970                                         NL80211_IFTYPE_STATION)) {
8971                 wpa_printf(MSG_INFO,
8972                            "nl80211: Failed to set interface into station mode");
8973         }
8974         return ret;
8975 }
8976
8977 #endif /* CONFIG_MESH */
8978
8979
8980 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8981                                       const u8 *ipaddr, int prefixlen,
8982                                       const u8 *addr)
8983 {
8984 #ifdef CONFIG_LIBNL3_ROUTE
8985         struct i802_bss *bss = priv;
8986         struct wpa_driver_nl80211_data *drv = bss->drv;
8987         struct rtnl_neigh *rn;
8988         struct nl_addr *nl_ipaddr = NULL;
8989         struct nl_addr *nl_lladdr = NULL;
8990         int family, addrsize;
8991         int res;
8992
8993         if (!ipaddr || prefixlen == 0 || !addr)
8994                 return -EINVAL;
8995
8996         if (bss->br_ifindex == 0) {
8997                 wpa_printf(MSG_DEBUG,
8998                            "nl80211: bridge must be set before adding an ip neigh to it");
8999                 return -1;
9000         }
9001
9002         if (!drv->rtnl_sk) {
9003                 wpa_printf(MSG_DEBUG,
9004                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
9005                 return -1;
9006         }
9007
9008         if (version == 4) {
9009                 family = AF_INET;
9010                 addrsize = 4;
9011         } else if (version == 6) {
9012                 family = AF_INET6;
9013                 addrsize = 16;
9014         } else {
9015                 return -EINVAL;
9016         }
9017
9018         rn = rtnl_neigh_alloc();
9019         if (rn == NULL)
9020                 return -ENOMEM;
9021
9022         /* set the destination ip address for neigh */
9023         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9024         if (nl_ipaddr == NULL) {
9025                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9026                 res = -ENOMEM;
9027                 goto errout;
9028         }
9029         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
9030         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9031         if (res) {
9032                 wpa_printf(MSG_DEBUG,
9033                            "nl80211: neigh set destination addr failed");
9034                 goto errout;
9035         }
9036
9037         /* set the corresponding lladdr for neigh */
9038         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
9039         if (nl_lladdr == NULL) {
9040                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
9041                 res = -ENOMEM;
9042                 goto errout;
9043         }
9044         rtnl_neigh_set_lladdr(rn, nl_lladdr);
9045
9046         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9047         rtnl_neigh_set_state(rn, NUD_PERMANENT);
9048
9049         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
9050         if (res) {
9051                 wpa_printf(MSG_DEBUG,
9052                            "nl80211: Adding bridge ip neigh failed: %s",
9053                            strerror(errno));
9054         }
9055 errout:
9056         if (nl_lladdr)
9057                 nl_addr_put(nl_lladdr);
9058         if (nl_ipaddr)
9059                 nl_addr_put(nl_ipaddr);
9060         if (rn)
9061                 rtnl_neigh_put(rn);
9062         return res;
9063 #else /* CONFIG_LIBNL3_ROUTE */
9064         return -1;
9065 #endif /* CONFIG_LIBNL3_ROUTE */
9066 }
9067
9068
9069 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
9070                                          const u8 *ipaddr)
9071 {
9072 #ifdef CONFIG_LIBNL3_ROUTE
9073         struct i802_bss *bss = priv;
9074         struct wpa_driver_nl80211_data *drv = bss->drv;
9075         struct rtnl_neigh *rn;
9076         struct nl_addr *nl_ipaddr;
9077         int family, addrsize;
9078         int res;
9079
9080         if (!ipaddr)
9081                 return -EINVAL;
9082
9083         if (version == 4) {
9084                 family = AF_INET;
9085                 addrsize = 4;
9086         } else if (version == 6) {
9087                 family = AF_INET6;
9088                 addrsize = 16;
9089         } else {
9090                 return -EINVAL;
9091         }
9092
9093         if (bss->br_ifindex == 0) {
9094                 wpa_printf(MSG_DEBUG,
9095                            "nl80211: bridge must be set to delete an ip neigh");
9096                 return -1;
9097         }
9098
9099         if (!drv->rtnl_sk) {
9100                 wpa_printf(MSG_DEBUG,
9101                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
9102                 return -1;
9103         }
9104
9105         rn = rtnl_neigh_alloc();
9106         if (rn == NULL)
9107                 return -ENOMEM;
9108
9109         /* set the destination ip address for neigh */
9110         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
9111         if (nl_ipaddr == NULL) {
9112                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
9113                 res = -ENOMEM;
9114                 goto errout;
9115         }
9116         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
9117         if (res) {
9118                 wpa_printf(MSG_DEBUG,
9119                            "nl80211: neigh set destination addr failed");
9120                 goto errout;
9121         }
9122
9123         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
9124
9125         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
9126         if (res) {
9127                 wpa_printf(MSG_DEBUG,
9128                            "nl80211: Deleting bridge ip neigh failed: %s",
9129                            strerror(errno));
9130         }
9131 errout:
9132         if (nl_ipaddr)
9133                 nl_addr_put(nl_ipaddr);
9134         if (rn)
9135                 rtnl_neigh_put(rn);
9136         return res;
9137 #else /* CONFIG_LIBNL3_ROUTE */
9138         return -1;
9139 #endif /* CONFIG_LIBNL3_ROUTE */
9140 }
9141
9142
9143 static int linux_write_system_file(const char *path, unsigned int val)
9144 {
9145         char buf[50];
9146         int fd, len;
9147
9148         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
9149         if (len < 0)
9150                 return -1;
9151
9152         fd = open(path, O_WRONLY);
9153         if (fd < 0)
9154                 return -1;
9155
9156         if (write(fd, buf, len) < 0) {
9157                 wpa_printf(MSG_DEBUG,
9158                            "nl80211: Failed to write Linux system file: %s with the value of %d",
9159                            path, val);
9160                 close(fd);
9161                 return -1;
9162         }
9163         close(fd);
9164
9165         return 0;
9166 }
9167
9168
9169 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
9170 {
9171         switch (attr) {
9172         case DRV_BR_PORT_ATTR_PROXYARP:
9173                 return "proxyarp";
9174         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
9175                 return "hairpin_mode";
9176         }
9177
9178         return NULL;
9179 }
9180
9181
9182 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
9183                                        unsigned int val)
9184 {
9185         struct i802_bss *bss = priv;
9186         char path[128];
9187         const char *attr_txt;
9188
9189         attr_txt = drv_br_port_attr_str(attr);
9190         if (attr_txt == NULL)
9191                 return -EINVAL;
9192
9193         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
9194                     bss->ifname, attr_txt);
9195
9196         if (linux_write_system_file(path, val))
9197                 return -1;
9198
9199         return 0;
9200 }
9201
9202
9203 static const char * drv_br_net_param_str(enum drv_br_net_param param)
9204 {
9205         switch (param) {
9206         case DRV_BR_NET_PARAM_GARP_ACCEPT:
9207                 return "arp_accept";
9208         }
9209
9210         return NULL;
9211 }
9212
9213
9214 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
9215                                        unsigned int val)
9216 {
9217         struct i802_bss *bss = priv;
9218         char path[128];
9219         const char *param_txt;
9220         int ip_version = 4;
9221
9222         param_txt = drv_br_net_param_str(param);
9223         if (param_txt == NULL)
9224                 return -EINVAL;
9225
9226         switch (param) {
9227                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
9228                         ip_version = 4;
9229                         break;
9230                 default:
9231                         return -EINVAL;
9232         }
9233
9234         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
9235                     ip_version, bss->brname, param_txt);
9236
9237         if (linux_write_system_file(path, val))
9238                 return -1;
9239
9240         return 0;
9241 }
9242
9243
9244 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9245         .name = "nl80211",
9246         .desc = "Linux nl80211/cfg80211",
9247         .get_bssid = wpa_driver_nl80211_get_bssid,
9248         .get_ssid = wpa_driver_nl80211_get_ssid,
9249         .set_key = driver_nl80211_set_key,
9250         .scan2 = driver_nl80211_scan2,
9251         .sched_scan = wpa_driver_nl80211_sched_scan,
9252         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9253         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9254         .deauthenticate = driver_nl80211_deauthenticate,
9255         .authenticate = driver_nl80211_authenticate,
9256         .associate = wpa_driver_nl80211_associate,
9257         .global_init = nl80211_global_init,
9258         .global_deinit = nl80211_global_deinit,
9259         .init2 = wpa_driver_nl80211_init,
9260         .deinit = driver_nl80211_deinit,
9261         .get_capa = wpa_driver_nl80211_get_capa,
9262         .set_operstate = wpa_driver_nl80211_set_operstate,
9263         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9264         .set_country = wpa_driver_nl80211_set_country,
9265         .get_country = wpa_driver_nl80211_get_country,
9266         .set_ap = wpa_driver_nl80211_set_ap,
9267         .set_acl = wpa_driver_nl80211_set_acl,
9268         .if_add = wpa_driver_nl80211_if_add,
9269         .if_remove = driver_nl80211_if_remove,
9270         .send_mlme = driver_nl80211_send_mlme,
9271         .get_hw_feature_data = nl80211_get_hw_feature_data,
9272         .sta_add = wpa_driver_nl80211_sta_add,
9273         .sta_remove = driver_nl80211_sta_remove,
9274         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9275         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9276         .hapd_init = i802_init,
9277         .hapd_deinit = i802_deinit,
9278         .set_wds_sta = i802_set_wds_sta,
9279         .get_seqnum = i802_get_seqnum,
9280         .flush = i802_flush,
9281         .get_inact_sec = i802_get_inact_sec,
9282         .sta_clear_stats = i802_sta_clear_stats,
9283         .set_rts = i802_set_rts,
9284         .set_frag = i802_set_frag,
9285         .set_tx_queue_params = i802_set_tx_queue_params,
9286         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9287         .sta_deauth = i802_sta_deauth,
9288         .sta_disassoc = i802_sta_disassoc,
9289         .read_sta_data = driver_nl80211_read_sta_data,
9290         .set_freq = i802_set_freq,
9291         .send_action = driver_nl80211_send_action,
9292         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9293         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9294         .cancel_remain_on_channel =
9295         wpa_driver_nl80211_cancel_remain_on_channel,
9296         .probe_req_report = driver_nl80211_probe_req_report,
9297         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9298         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9299         .resume = wpa_driver_nl80211_resume,
9300         .send_ft_action = nl80211_send_ft_action,
9301         .signal_monitor = nl80211_signal_monitor,
9302         .signal_poll = nl80211_signal_poll,
9303         .send_frame = nl80211_send_frame,
9304         .shared_freq = wpa_driver_nl80211_shared_freq,
9305         .set_param = nl80211_set_param,
9306         .get_radio_name = nl80211_get_radio_name,
9307         .add_pmkid = nl80211_add_pmkid,
9308         .remove_pmkid = nl80211_remove_pmkid,
9309         .flush_pmkid = nl80211_flush_pmkid,
9310         .set_rekey_info = nl80211_set_rekey_info,
9311         .poll_client = nl80211_poll_client,
9312         .set_p2p_powersave = nl80211_set_p2p_powersave,
9313         .start_dfs_cac = nl80211_start_radar_detection,
9314         .stop_ap = wpa_driver_nl80211_stop_ap,
9315 #ifdef CONFIG_TDLS
9316         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9317         .tdls_oper = nl80211_tdls_oper,
9318 #endif /* CONFIG_TDLS */
9319         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9320         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9321         .get_survey = wpa_driver_nl80211_get_survey,
9322         .status = wpa_driver_nl80211_status,
9323         .switch_channel = nl80211_switch_channel,
9324 #ifdef ANDROID_P2P
9325         .set_noa = wpa_driver_set_p2p_noa,
9326         .get_noa = wpa_driver_get_p2p_noa,
9327         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9328 #endif /* ANDROID_P2P */
9329 #ifdef ANDROID
9330         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9331 #endif /* ANDROID */
9332         .vendor_cmd = nl80211_vendor_cmd,
9333         .set_qos_map = nl80211_set_qos_map,
9334         .set_wowlan = nl80211_set_wowlan,
9335         .roaming = nl80211_roaming,
9336         .set_mac_addr = nl80211_set_mac_addr,
9337 #ifdef CONFIG_MESH
9338         .init_mesh = wpa_driver_nl80211_init_mesh,
9339         .join_mesh = wpa_driver_nl80211_join_mesh,
9340         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9341 #endif /* CONFIG_MESH */
9342         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9343         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9344         .br_port_set_attr = wpa_driver_br_port_set_attr,
9345         .br_set_net_param = wpa_driver_br_set_net_param,
9346         .add_tx_ts = nl80211_add_ts,
9347         .del_tx_ts = nl80211_del_ts,
9348 };