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                         return;
 931                 }
 932                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 933                 if (drv->ignore_if_down_event) {
 934                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 935                                    "event generated by mode change");
 936                         drv->ignore_if_down_event = 0;
 937                 } else {
 938                         drv->if_disabled = 1;
 939                         wpa_supplicant_event(drv->ctx,
 940                                              EVENT_INTERFACE_DISABLED, NULL);
 941
 942                         /*
 943                          * Try to get drv again, since it may be removed as
 944                          * part of the EVENT_INTERFACE_DISABLED handling for
 945                          * dynamic interfaces
 946                          */
 947                         drv = nl80211_find_drv(global, ifi->ifi_index,
 948                                                buf, len);
 949                         if (!drv)
 950                                 return;
 951                 }
 952         }
 953
 954         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 955                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 956                     linux_iface_up(drv->global->ioctl_sock,
 957                                    drv->first_bss->ifname) == 0) {
 958                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 959                                    "event since interface %s is down",
 960                                    namebuf);
 961                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 962                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 963                                    "event since interface %s does not exist",
 964                                    drv->first_bss->ifname);
 965                 } else if (drv->if_removed) {
 966                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 967                                    "event since interface %s is marked "
 968                                    "removed", drv->first_bss->ifname);
 969                 } else {
 970                         struct i802_bss *bss;
 971                         u8 addr[ETH_ALEN];
 972
 973                         /* Re-read MAC address as it may have changed */
 974                         bss = get_bss_ifindex(drv, ifi->ifi_index);
 975                         if (bss &&
 976                             linux_get_ifhwaddr(drv->global->ioctl_sock,
 977                                                bss->ifname, addr) < 0) {
 978                                 wpa_printf(MSG_DEBUG,
 979                                            "nl80211: %s: failed to re-read MAC address",
 980                                            bss->ifname);
 981                         } else if (bss &&
 982                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
 983                                 wpa_printf(MSG_DEBUG,
 984                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
 985                                            MACSTR " to " MACSTR,
 986                                            ifi->ifi_index, bss->ifname,
 987                                            MAC2STR(bss->addr),
 988                                            MAC2STR(addr));
 989                                 os_memcpy(bss->addr, addr, ETH_ALEN);
 990                         }
 991
 992                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
 993                         drv->if_disabled = 0;
 994                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
 995                                              NULL);
 996                 }
 997         }
 998
 999         /*
1000          * Some drivers send the association event before the operup event--in
1001          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1002          * fails. This will hit us when wpa_supplicant does not need to do
1003          * IEEE 802.1X authentication
1004          */
1005         if (drv->operstate == 1 &&
1006             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1007             !(ifi->ifi_flags & IFF_RUNNING)) {
1008                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1009                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1010                                        -1, IF_OPER_UP);
1011         }
1012
1013         if (ifname[0])
1014                 wpa_driver_nl80211_event_newlink(drv, ifname);
1015
1016         if (ifi->ifi_family == AF_BRIDGE && brid) {
1017                 struct i802_bss *bss;
1018
1019                 /* device has been added to bridge */
1020                 if_indextoname(brid, namebuf);
1021                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1022                            brid, namebuf);
1023                 add_ifidx(drv, brid);
1024
1025                 for (bss = drv->first_bss; bss; bss = bss->next) {
1026                         if (os_strcmp(ifname, bss->ifname) == 0) {
1027                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1028                                 break;
1029                         }
1030                 }
1031         }
1032 }
1033
1034
1035 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1036                                                  struct ifinfomsg *ifi,
1037                                                  u8 *buf, size_t len)
1038 {
1039         struct nl80211_global *global = ctx;
1040         struct wpa_driver_nl80211_data *drv;
1041         int attrlen;
1042         struct rtattr *attr;
1043         u32 brid = 0;
1044         char ifname[IFNAMSIZ + 1];
1045         char extra[100], *pos, *end;
1046
1047         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1048         if (!drv) {
1049                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1050                            ifi->ifi_index);
1051                 return;
1052         }
1053
1054         extra[0] = '\0';
1055         pos = extra;
1056         end = pos + sizeof(extra);
1057         ifname[0] = '\0';
1058
1059         attrlen = len;
1060         attr = (struct rtattr *) buf;
1061         while (RTA_OK(attr, attrlen)) {
1062                 switch (attr->rta_type) {
1063                 case IFLA_IFNAME:
1064                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1065                                 break;
1066                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1067                         ifname[RTA_PAYLOAD(attr)] = '\0';
1068                         break;
1069                 case IFLA_MASTER:
1070                         brid = nla_get_u32((struct nlattr *) attr);
1071                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1072                         break;
1073                 case IFLA_OPERSTATE:
1074                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1075                                            nla_get_u32((struct nlattr *) attr));
1076                         break;
1077                 case IFLA_LINKMODE:
1078                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1079                                            nla_get_u32((struct nlattr *) attr));
1080                         break;
1081                 }
1082                 attr = RTA_NEXT(attr, attrlen);
1083         }
1084         extra[sizeof(extra) - 1] = '\0';
1085
1086         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1087                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1088                    ifi->ifi_flags,
1089                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1090                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1091                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1092                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1093
1094         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1095                 wpa_driver_nl80211_event_dellink(drv, ifname);
1096
1097         if (ifi->ifi_family == AF_BRIDGE && brid) {
1098                 /* device has been removed from bridge */
1099                 char namebuf[IFNAMSIZ];
1100                 if_indextoname(brid, namebuf);
1101                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1102                            "%s", brid, namebuf);
1103                 del_ifidx(drv, brid);
1104         }
1105 }
1106
1107
1108 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1109 {
1110         struct nl_msg *msg;
1111         int ret;
1112         struct nl80211_bss_info_arg arg;
1113
1114         os_memset(&arg, 0, sizeof(arg));
1115         msg = nlmsg_alloc();
1116         if (!msg)
1117                 goto nla_put_failure;
1118
1119         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1120         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1121
1122         arg.drv = drv;
1123         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1124         msg = NULL;
1125         if (ret == 0) {
1126                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1127                         arg.ibss_freq : arg.assoc_freq;
1128                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1129                            "associated BSS from scan results: %u MHz", freq);
1130                 if (freq)
1131                         drv->assoc_freq = freq;
1132                 return drv->assoc_freq;
1133         }
1134         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1135                    "(%s)", ret, strerror(-ret));
1136 nla_put_failure:
1137         nlmsg_free(msg);
1138         return drv->assoc_freq;
1139 }
1140
1141
1142 static int get_link_signal(struct nl_msg *msg, void *arg)
1143 {
1144         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1145         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1146         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1147         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1148                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1149                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1150         };
1151         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1152         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1153                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1154                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1155                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1156                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1157         };
1158         struct wpa_signal_info *sig_change = arg;
1159
1160         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1161                   genlmsg_attrlen(gnlh, 0), NULL);
1162         if (!tb[NL80211_ATTR_STA_INFO] ||
1163             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1164                              tb[NL80211_ATTR_STA_INFO], policy))
1165                 return NL_SKIP;
1166         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1167                 return NL_SKIP;
1168
1169         sig_change->current_signal =
1170                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1171
1172         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1173                 sig_change->avg_signal =
1174                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1175         else
1176                 sig_change->avg_signal = 0;
1177
1178         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1179                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1180                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1181                                      rate_policy)) {
1182                         sig_change->current_txrate = 0;
1183                 } else {
1184                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1185                                 sig_change->current_txrate =
1186                                         nla_get_u16(rinfo[
1187                                              NL80211_RATE_INFO_BITRATE]) * 100;
1188                         }
1189                 }
1190         }
1191
1192         return NL_SKIP;
1193 }
1194
1195
1196 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1197                             struct wpa_signal_info *sig)
1198 {
1199         struct nl_msg *msg;
1200
1201         sig->current_signal = -9999;
1202         sig->current_txrate = 0;
1203
1204         msg = nlmsg_alloc();
1205         if (!msg)
1206                 return -ENOMEM;
1207
1208         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1209
1210         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1211         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1212
1213         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1214  nla_put_failure:
1215         nlmsg_free(msg);
1216         return -ENOBUFS;
1217 }
1218
1219
1220 static int get_link_noise(struct nl_msg *msg, void *arg)
1221 {
1222         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1223         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1224         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1225         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1226                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1227                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1228         };
1229         struct wpa_signal_info *sig_change = arg;
1230
1231         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1232                   genlmsg_attrlen(gnlh, 0), NULL);
1233
1234         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1235                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1236                 return NL_SKIP;
1237         }
1238
1239         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1240                              tb[NL80211_ATTR_SURVEY_INFO],
1241                              survey_policy)) {
1242                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1243                            "attributes!");
1244                 return NL_SKIP;
1245         }
1246
1247         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1248                 return NL_SKIP;
1249
1250         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1251             sig_change->frequency)
1252                 return NL_SKIP;
1253
1254         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1255                 return NL_SKIP;
1256
1257         sig_change->current_noise =
1258                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1259
1260         return NL_SKIP;
1261 }
1262
1263
1264 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1265                            struct wpa_signal_info *sig_change)
1266 {
1267         struct nl_msg *msg;
1268
1269         sig_change->current_noise = 9999;
1270         sig_change->frequency = drv->assoc_freq;
1271
1272         msg = nlmsg_alloc();
1273         if (!msg)
1274                 return -ENOMEM;
1275
1276         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1277
1278         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1279
1280         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1281  nla_put_failure:
1282         nlmsg_free(msg);
1283         return -ENOBUFS;
1284 }
1285
1286
1287 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1288 {
1289         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1290         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1291         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1292         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1293                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1294                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1295         };
1296         struct wpa_scan_results *scan_results = arg;
1297         struct wpa_scan_res *scan_res;
1298         size_t i;
1299
1300         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1301                   genlmsg_attrlen(gnlh, 0), NULL);
1302
1303         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1304                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1305                 return NL_SKIP;
1306         }
1307
1308         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1309                              tb[NL80211_ATTR_SURVEY_INFO],
1310                              survey_policy)) {
1311                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1312                            "attributes");
1313                 return NL_SKIP;
1314         }
1315
1316         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1317                 return NL_SKIP;
1318
1319         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1320                 return NL_SKIP;
1321
1322         for (i = 0; i < scan_results->num; ++i) {
1323                 scan_res = scan_results->res[i];
1324                 if (!scan_res)
1325                         continue;
1326                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1327                     scan_res->freq)
1328                         continue;
1329                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1330                         continue;
1331                 scan_res->noise = (s8)
1332                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1333                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1334         }
1335
1336         return NL_SKIP;
1337 }
1338
1339
1340 static int nl80211_get_noise_for_scan_results(
1341         struct wpa_driver_nl80211_data *drv,
1342         struct wpa_scan_results *scan_res)
1343 {
1344         struct nl_msg *msg;
1345
1346         msg = nlmsg_alloc();
1347         if (!msg)
1348                 return -ENOMEM;
1349
1350         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1351
1352         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1353
1354         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1355                                   scan_res);
1356  nla_put_failure:
1357         nlmsg_free(msg);
1358         return -ENOBUFS;
1359 }
1360
1361
1362 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1363                                              void *handle)
1364 {
1365         struct nl_cb *cb = eloop_ctx;
1366         int res;
1367
1368         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1369
1370         res = nl_recvmsgs(handle, cb);
1371         if (res < 0) {
1372                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1373                            __func__, res);
1374         }
1375 }
1376
1377
1378 /**
1379  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1380  * @priv: driver_nl80211 private data
1381  * @alpha2_arg: country to which to switch to
1382  * Returns: 0 on success, -1 on failure
1383  *
1384  * This asks nl80211 to set the regulatory domain for given
1385  * country ISO / IEC alpha2.
1386  */
1387 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1388 {
1389         struct i802_bss *bss = priv;
1390         struct wpa_driver_nl80211_data *drv = bss->drv;
1391         char alpha2[3];
1392         struct nl_msg *msg;
1393
1394         msg = nlmsg_alloc();
1395         if (!msg)
1396                 return -ENOMEM;
1397
1398         alpha2[0] = alpha2_arg[0];
1399         alpha2[1] = alpha2_arg[1];
1400         alpha2[2] = '\0';
1401
1402         nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
1403
1404         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1405         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1406                 return -EINVAL;
1407         return 0;
1408 nla_put_failure:
1409         nlmsg_free(msg);
1410         return -EINVAL;
1411 }
1412
1413
1414 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1415 {
1416         char *alpha2 = arg;
1417         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1418         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1419
1420         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1421                   genlmsg_attrlen(gnlh, 0), NULL);
1422         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1423                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1424                 return NL_SKIP;
1425         }
1426         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1427         return NL_SKIP;
1428 }
1429
1430
1431 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1432 {
1433         struct i802_bss *bss = priv;
1434         struct wpa_driver_nl80211_data *drv = bss->drv;
1435         struct nl_msg *msg;
1436         int ret;
1437
1438         msg = nlmsg_alloc();
1439         if (!msg)
1440                 return -ENOMEM;
1441
1442         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1443         alpha2[0] = '\0';
1444         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1445         if (!alpha2[0])
1446                 ret = -1;
1447
1448         return ret;
1449 }
1450
1451
1452 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1453 {
1454         int ret;
1455
1456         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1457         if (global->nl_cb == NULL) {
1458                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1459                            "callbacks");
1460                 return -1;
1461         }
1462
1463         global->nl = nl_create_handle(global->nl_cb, "nl");
1464         if (global->nl == NULL)
1465                 goto err;
1466
1467         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1468         if (global->nl80211_id < 0) {
1469                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1470                            "found");
1471                 goto err;
1472         }
1473
1474         global->nl_event = nl_create_handle(global->nl_cb, "event");
1475         if (global->nl_event == NULL)
1476                 goto err;
1477
1478         ret = nl_get_multicast_id(global, "nl80211", "scan");
1479         if (ret >= 0)
1480                 ret = nl_socket_add_membership(global->nl_event, ret);
1481         if (ret < 0) {
1482                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1483                            "membership for scan events: %d (%s)",
1484                            ret, strerror(-ret));
1485                 goto err;
1486         }
1487
1488         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1489         if (ret >= 0)
1490                 ret = nl_socket_add_membership(global->nl_event, ret);
1491         if (ret < 0) {
1492                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1493                            "membership for mlme events: %d (%s)",
1494                            ret, strerror(-ret));
1495                 goto err;
1496         }
1497
1498         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1499         if (ret >= 0)
1500                 ret = nl_socket_add_membership(global->nl_event, ret);
1501         if (ret < 0) {
1502                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1503                            "membership for regulatory events: %d (%s)",
1504                            ret, strerror(-ret));
1505                 /* Continue without regulatory events */
1506         }
1507
1508         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1509         if (ret >= 0)
1510                 ret = nl_socket_add_membership(global->nl_event, ret);
1511         if (ret < 0) {
1512                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1513                            "membership for vendor events: %d (%s)",
1514                            ret, strerror(-ret));
1515                 /* Continue without vendor events */
1516         }
1517
1518         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1519                   no_seq_check, NULL);
1520         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1521                   process_global_event, global);
1522
1523         nl80211_register_eloop_read(&global->nl_event,
1524                                     wpa_driver_nl80211_event_receive,
1525                                     global->nl_cb);
1526
1527         return 0;
1528
1529 err:
1530         nl_destroy_handles(&global->nl_event);
1531         nl_destroy_handles(&global->nl);
1532         nl_cb_put(global->nl_cb);
1533         global->nl_cb = NULL;
1534         return -1;
1535 }
1536
1537
1538 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1539 {
1540         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1541         if (!drv->nl_cb) {
1542                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
1543                 return -1;
1544         }
1545
1546         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1547                   no_seq_check, NULL);
1548         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1549                   process_drv_event, drv);
1550
1551         return 0;
1552 }
1553
1554
1555 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1556 {
1557         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1558         /*
1559          * This may be for any interface; use ifdown event to disable
1560          * interface.
1561          */
1562 }
1563
1564
1565 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1566 {
1567         struct wpa_driver_nl80211_data *drv = ctx;
1568         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1569         if (i802_set_iface_flags(drv->first_bss, 1)) {
1570                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1571                            "after rfkill unblock");
1572                 return;
1573         }
1574         /* rtnetlink ifup handler will report interface as enabled */
1575 }
1576
1577
1578 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1579                                                       void *eloop_ctx,
1580                                                       void *handle)
1581 {
1582         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1583         u8 data[2048];
1584         struct msghdr msg;
1585         struct iovec entry;
1586         u8 control[512];
1587         struct cmsghdr *cmsg;
1588         int res, found_ee = 0, found_wifi = 0, acked = 0;
1589         union wpa_event_data event;
1590
1591         memset(&msg, 0, sizeof(msg));
1592         msg.msg_iov = &entry;
1593         msg.msg_iovlen = 1;
1594         entry.iov_base = data;
1595         entry.iov_len = sizeof(data);
1596         msg.msg_control = &control;
1597         msg.msg_controllen = sizeof(control);
1598
1599         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1600         /* if error or not fitting 802.3 header, return */
1601         if (res < 14)
1602                 return;
1603
1604         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1605         {
1606                 if (cmsg->cmsg_level == SOL_SOCKET &&
1607                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1608                         int *ack;
1609
1610                         found_wifi = 1;
1611                         ack = (void *)CMSG_DATA(cmsg);
1612                         acked = *ack;
1613                 }
1614
1615                 if (cmsg->cmsg_level == SOL_PACKET &&
1616                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1617                         struct sock_extended_err *err =
1618                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1619
1620                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1621                                 found_ee = 1;
1622                 }
1623         }
1624
1625         if (!found_ee || !found_wifi)
1626                 return;
1627
1628         memset(&event, 0, sizeof(event));
1629         event.eapol_tx_status.dst = data;
1630         event.eapol_tx_status.data = data + 14;
1631         event.eapol_tx_status.data_len = res - 14;
1632         event.eapol_tx_status.ack = acked;
1633         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1634 }
1635
1636
1637 static int nl80211_init_bss(struct i802_bss *bss)
1638 {
1639         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1640         if (!bss->nl_cb)
1641                 return -1;
1642
1643         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1644                   no_seq_check, NULL);
1645         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1646                   process_bss_event, bss);
1647
1648         return 0;
1649 }
1650
1651
1652 static void nl80211_destroy_bss(struct i802_bss *bss)
1653 {
1654         nl_cb_put(bss->nl_cb);
1655         bss->nl_cb = NULL;
1656 }
1657
1658
1659 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1660                                           void *global_priv, int hostapd,
1661                                           const u8 *set_addr)
1662 {
1663         struct wpa_driver_nl80211_data *drv;
1664         struct rfkill_config *rcfg;
1665         struct i802_bss *bss;
1666
1667         if (global_priv == NULL)
1668                 return NULL;
1669         drv = os_zalloc(sizeof(*drv));
1670         if (drv == NULL)
1671                 return NULL;
1672         drv->global = global_priv;
1673         drv->ctx = ctx;
1674         drv->hostapd = !!hostapd;
1675         drv->eapol_sock = -1;
1676         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1677         drv->if_indices = drv->default_if_indices;
1678
1679         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1680         if (!drv->first_bss) {
1681                 os_free(drv);
1682                 return NULL;
1683         }
1684         bss = drv->first_bss;
1685         bss->drv = drv;
1686         bss->ctx = ctx;
1687
1688         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1689         drv->monitor_ifidx = -1;
1690         drv->monitor_sock = -1;
1691         drv->eapol_tx_sock = -1;
1692         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1693
1694         if (wpa_driver_nl80211_init_nl(drv)) {
1695                 os_free(drv);
1696                 return NULL;
1697         }
1698
1699         if (nl80211_init_bss(bss))
1700                 goto failed;
1701
1702         rcfg = os_zalloc(sizeof(*rcfg));
1703         if (rcfg == NULL)
1704                 goto failed;
1705         rcfg->ctx = drv;
1706         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1707         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1708         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1709         drv->rfkill = rfkill_init(rcfg);
1710         if (drv->rfkill == NULL) {
1711                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1712                 os_free(rcfg);
1713         }
1714
1715         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1716                 drv->start_iface_up = 1;
1717
1718         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1))
1719                 goto failed;
1720
1721         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1722         if (drv->eapol_tx_sock < 0)
1723                 goto failed;
1724
1725         if (drv->data_tx_status) {
1726                 int enabled = 1;
1727
1728                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1729                                &enabled, sizeof(enabled)) < 0) {
1730                         wpa_printf(MSG_DEBUG,
1731                                 "nl80211: wifi status sockopt failed\n");
1732                         drv->data_tx_status = 0;
1733                         if (!drv->use_monitor)
1734                                 drv->capa.flags &=
1735                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1736                 } else {
1737                         eloop_register_read_sock(drv->eapol_tx_sock,
1738                                 wpa_driver_nl80211_handle_eapol_tx_status,
1739                                 drv, NULL);
1740                 }
1741         }
1742
1743         if (drv->global) {
1744                 dl_list_add(&drv->global->interfaces, &drv->list);
1745                 drv->in_interface_list = 1;
1746         }
1747
1748         return bss;
1749
1750 failed:
1751         wpa_driver_nl80211_deinit(bss);
1752         return NULL;
1753 }
1754
1755
1756 /**
1757  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1758  * @ctx: context to be used when calling wpa_supplicant functions,
1759  * e.g., wpa_supplicant_event()
1760  * @ifname: interface name, e.g., wlan0
1761  * @global_priv: private driver global data from global_init()
1762  * Returns: Pointer to private data, %NULL on failure
1763  */
1764 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1765                                       void *global_priv)
1766 {
1767         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL);
1768 }
1769
1770
1771 static int nl80211_register_frame(struct i802_bss *bss,
1772                                   struct nl_handle *nl_handle,
1773                                   u16 type, const u8 *match, size_t match_len)
1774 {
1775         struct wpa_driver_nl80211_data *drv = bss->drv;
1776         struct nl_msg *msg;
1777         int ret = -1;
1778         char buf[30];
1779
1780         msg = nlmsg_alloc();
1781         if (!msg)
1782                 return -1;
1783
1784         buf[0] = '\0';
1785         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1786         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1787                    type, fc2str(type), nl_handle, buf);
1788
1789         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
1790
1791         if (nl80211_set_iface_id(msg, bss) < 0)
1792                 goto nla_put_failure;
1793
1794         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1795         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1796
1797         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1798         msg = NULL;
1799         if (ret) {
1800                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1801                            "failed (type=%u): ret=%d (%s)",
1802                            type, ret, strerror(-ret));
1803                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1804                             match, match_len);
1805                 goto nla_put_failure;
1806         }
1807         ret = 0;
1808 nla_put_failure:
1809         nlmsg_free(msg);
1810         return ret;
1811 }
1812
1813
1814 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1815 {
1816         struct wpa_driver_nl80211_data *drv = bss->drv;
1817
1818         if (bss->nl_mgmt) {
1819                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1820                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1821                 return -1;
1822         }
1823
1824         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
1825         if (bss->nl_mgmt == NULL)
1826                 return -1;
1827
1828         return 0;
1829 }
1830
1831
1832 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1833 {
1834         nl80211_register_eloop_read(&bss->nl_mgmt,
1835                                     wpa_driver_nl80211_event_receive,
1836                                     bss->nl_cb);
1837 }
1838
1839
1840 static int nl80211_register_action_frame(struct i802_bss *bss,
1841                                          const u8 *match, size_t match_len)
1842 {
1843         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1844         return nl80211_register_frame(bss, bss->nl_mgmt,
1845                                       type, match, match_len);
1846 }
1847
1848
1849 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1850 {
1851         struct wpa_driver_nl80211_data *drv = bss->drv;
1852         int ret = 0;
1853
1854         if (nl80211_alloc_mgmt_handle(bss))
1855                 return -1;
1856         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1857                    "handle %p", bss->nl_mgmt);
1858
1859         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1860                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1861
1862                 /* register for any AUTH message */
1863                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1864         }
1865
1866 #ifdef CONFIG_INTERWORKING
1867         /* QoS Map Configure */
1868         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1869                 ret = -1;
1870 #endif /* CONFIG_INTERWORKING */
1871 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1872         /* GAS Initial Request */
1873         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1874                 ret = -1;
1875         /* GAS Initial Response */
1876         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1877                 ret = -1;
1878         /* GAS Comeback Request */
1879         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1880                 ret = -1;
1881         /* GAS Comeback Response */
1882         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1883                 ret = -1;
1884         /* Protected GAS Initial Request */
1885         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1886                 ret = -1;
1887         /* Protected GAS Initial Response */
1888         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1889                 ret = -1;
1890         /* Protected GAS Comeback Request */
1891         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1892                 ret = -1;
1893         /* Protected GAS Comeback Response */
1894         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1895                 ret = -1;
1896 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1897 #ifdef CONFIG_P2P
1898         /* P2P Public Action */
1899         if (nl80211_register_action_frame(bss,
1900                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1901                                           6) < 0)
1902                 ret = -1;
1903         /* P2P Action */
1904         if (nl80211_register_action_frame(bss,
1905                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1906                                           5) < 0)
1907                 ret = -1;
1908 #endif /* CONFIG_P2P */
1909 #ifdef CONFIG_IEEE80211W
1910         /* SA Query Response */
1911         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1912                 ret = -1;
1913 #endif /* CONFIG_IEEE80211W */
1914 #ifdef CONFIG_TDLS
1915         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1916                 /* TDLS Discovery Response */
1917                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1918                     0)
1919                         ret = -1;
1920         }
1921 #endif /* CONFIG_TDLS */
1922
1923         /* FT Action frames */
1924         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1925                 ret = -1;
1926         else
1927                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1928                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1929
1930         /* WNM - BSS Transition Management Request */
1931         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1932                 ret = -1;
1933         /* WNM-Sleep Mode Response */
1934         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1935                 ret = -1;
1936
1937 #ifdef CONFIG_HS20
1938         /* WNM-Notification */
1939         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1940                 ret = -1;
1941 #endif /* CONFIG_HS20 */
1942
1943         nl80211_mgmt_handle_register_eloop(bss);
1944
1945         return ret;
1946 }
1947
1948
1949 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1950 {
1951         int ret = 0;
1952
1953         if (nl80211_alloc_mgmt_handle(bss))
1954                 return -1;
1955
1956         wpa_printf(MSG_DEBUG,
1957                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1958                    bss->nl_mgmt);
1959
1960         /* Auth frames for mesh SAE */
1961         if (nl80211_register_frame(bss, bss->nl_mgmt,
1962                                    (WLAN_FC_TYPE_MGMT << 2) |
1963                                    (WLAN_FC_STYPE_AUTH << 4),
1964                                    NULL, 0) < 0)
1965                 ret = -1;
1966
1967         /* Mesh peering open */
1968         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1969                 ret = -1;
1970         /* Mesh peering confirm */
1971         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1972                 ret = -1;
1973         /* Mesh peering close */
1974         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1975                 ret = -1;
1976
1977         nl80211_mgmt_handle_register_eloop(bss);
1978
1979         return ret;
1980 }
1981
1982
1983 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1984 {
1985         struct wpa_driver_nl80211_data *drv = bss->drv;
1986         struct nl_msg *msg;
1987         int ret = -1;
1988
1989         msg = nlmsg_alloc();
1990         if (!msg)
1991                 return -1;
1992
1993         nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
1994
1995         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
1996
1997         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
1998         msg = NULL;
1999         if (ret) {
2000                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2001                            "failed: ret=%d (%s)",
2002                            ret, strerror(-ret));
2003                 goto nla_put_failure;
2004         }
2005         ret = 0;
2006 nla_put_failure:
2007         nlmsg_free(msg);
2008         return ret;
2009 }
2010
2011
2012 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2013 {
2014         static const int stypes[] = {
2015                 WLAN_FC_STYPE_AUTH,
2016                 WLAN_FC_STYPE_ASSOC_REQ,
2017                 WLAN_FC_STYPE_REASSOC_REQ,
2018                 WLAN_FC_STYPE_DISASSOC,
2019                 WLAN_FC_STYPE_DEAUTH,
2020                 WLAN_FC_STYPE_ACTION,
2021                 WLAN_FC_STYPE_PROBE_REQ,
2022 /* Beacon doesn't work as mac80211 doesn't currently allow
2023  * it, but it wouldn't really be the right thing anyway as
2024  * it isn't per interface ... maybe just dump the scan
2025  * results periodically for OLBC?
2026  */
2027                 /* WLAN_FC_STYPE_BEACON, */
2028         };
2029         unsigned int i;
2030
2031         if (nl80211_alloc_mgmt_handle(bss))
2032                 return -1;
2033         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2034                    "handle %p", bss->nl_mgmt);
2035
2036         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2037                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2038                                            (WLAN_FC_TYPE_MGMT << 2) |
2039                                            (stypes[i] << 4),
2040                                            NULL, 0) < 0) {
2041                         goto out_err;
2042                 }
2043         }
2044
2045         if (nl80211_register_spurious_class3(bss))
2046                 goto out_err;
2047
2048         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2049                 goto out_err;
2050
2051         nl80211_mgmt_handle_register_eloop(bss);
2052         return 0;
2053
2054 out_err:
2055         nl_destroy_handles(&bss->nl_mgmt);
2056         return -1;
2057 }
2058
2059
2060 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2061 {
2062         if (nl80211_alloc_mgmt_handle(bss))
2063                 return -1;
2064         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2065                    "handle %p (device SME)", bss->nl_mgmt);
2066
2067         if (nl80211_register_frame(bss, bss->nl_mgmt,
2068                                    (WLAN_FC_TYPE_MGMT << 2) |
2069                                    (WLAN_FC_STYPE_ACTION << 4),
2070                                    NULL, 0) < 0)
2071                 goto out_err;
2072
2073         nl80211_mgmt_handle_register_eloop(bss);
2074         return 0;
2075
2076 out_err:
2077         nl_destroy_handles(&bss->nl_mgmt);
2078         return -1;
2079 }
2080
2081
2082 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2083 {
2084         if (bss->nl_mgmt == NULL)
2085                 return;
2086         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2087                    "(%s)", bss->nl_mgmt, reason);
2088         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2089
2090         nl80211_put_wiphy_data_ap(bss);
2091 }
2092
2093
2094 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2095 {
2096         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2097 }
2098
2099
2100 static void nl80211_del_p2pdev(struct i802_bss *bss)
2101 {
2102         struct wpa_driver_nl80211_data *drv = bss->drv;
2103         struct nl_msg *msg;
2104         int ret;
2105
2106         msg = nlmsg_alloc();
2107         if (!msg)
2108                 return;
2109
2110         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
2111         NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2112
2113         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2114         msg = NULL;
2115
2116         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2117                    bss->ifname, (long long unsigned int) bss->wdev_id,
2118                    strerror(-ret));
2119
2120 nla_put_failure:
2121         nlmsg_free(msg);
2122 }
2123
2124
2125 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2126 {
2127         struct wpa_driver_nl80211_data *drv = bss->drv;
2128         struct nl_msg *msg;
2129         int ret = -1;
2130
2131         msg = nlmsg_alloc();
2132         if (!msg)
2133                 return -1;
2134
2135         if (start)
2136                 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_P2P_DEVICE);
2137         else
2138                 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_P2P_DEVICE);
2139
2140         NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
2141
2142         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2143         msg = NULL;
2144
2145         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2146                    start ? "Start" : "Stop",
2147                    bss->ifname, (long long unsigned int) bss->wdev_id,
2148                    strerror(-ret));
2149
2150 nla_put_failure:
2151         nlmsg_free(msg);
2152         return ret;
2153 }
2154
2155
2156 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2157 {
2158         enum nl80211_iftype nlmode;
2159
2160         nlmode = nl80211_get_ifmode(bss);
2161         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2162                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2163                                              bss->ifname, up);
2164         }
2165
2166         /* P2P Device has start/stop which is equivalent */
2167         return nl80211_set_p2pdev(bss, up);
2168 }
2169
2170
2171 static int
2172 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2173                                    const u8 *set_addr, int first)
2174 {
2175         struct i802_bss *bss = drv->first_bss;
2176         int send_rfkill_event = 0;
2177         enum nl80211_iftype nlmode;
2178
2179         drv->ifindex = if_nametoindex(bss->ifname);
2180         bss->ifindex = drv->ifindex;
2181         bss->wdev_id = drv->global->if_add_wdevid;
2182         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2183
2184         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2185         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2186         drv->global->if_add_wdevid_set = 0;
2187
2188         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2189                 bss->static_ap = 1;
2190
2191         if (wpa_driver_nl80211_capa(drv))
2192                 return -1;
2193
2194         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2195                    bss->ifname, drv->phyname);
2196
2197         if (set_addr &&
2198             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2199              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2200                                 set_addr)))
2201                 return -1;
2202
2203         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2204                 drv->start_mode_ap = 1;
2205
2206         if (drv->hostapd || bss->static_ap)
2207                 nlmode = NL80211_IFTYPE_AP;
2208         else if (bss->if_dynamic)
2209                 nlmode = nl80211_get_ifmode(bss);
2210         else
2211                 nlmode = NL80211_IFTYPE_STATION;
2212
2213         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2214                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2215                 return -1;
2216         }
2217
2218         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2219                 nl80211_get_macaddr(bss);
2220
2221         if (!rfkill_is_blocked(drv->rfkill)) {
2222                 int ret = i802_set_iface_flags(bss, 1);
2223                 if (ret) {
2224                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2225                                    "interface '%s' UP", bss->ifname);
2226                         return ret;
2227                 }
2228                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2229                         return ret;
2230         } else {
2231                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2232                            "interface '%s' due to rfkill", bss->ifname);
2233                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2234                         return 0;
2235                 drv->if_disabled = 1;
2236                 send_rfkill_event = 1;
2237         }
2238
2239         if (!drv->hostapd)
2240                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2241                                        1, IF_OPER_DORMANT);
2242
2243         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2244                                bss->addr))
2245                 return -1;
2246         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2247
2248         if (send_rfkill_event) {
2249                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2250                                        drv, drv->ctx);
2251         }
2252
2253         return 0;
2254 }
2255
2256
2257 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2258 {
2259         struct nl_msg *msg;
2260
2261         msg = nlmsg_alloc();
2262         if (!msg)
2263                 return -ENOMEM;
2264
2265         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2266                    drv->ifindex);
2267         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
2268         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2269
2270         return send_and_recv_msgs(drv, msg, NULL, NULL);
2271  nla_put_failure:
2272         nlmsg_free(msg);
2273         return -ENOBUFS;
2274 }
2275
2276
2277 /**
2278  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2279  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2280  *
2281  * Shut down driver interface and processing of driver events. Free
2282  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2283  */
2284 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2285 {
2286         struct wpa_driver_nl80211_data *drv = bss->drv;
2287
2288         bss->in_deinit = 1;
2289         if (drv->data_tx_status)
2290                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2291         if (drv->eapol_tx_sock >= 0)
2292                 close(drv->eapol_tx_sock);
2293
2294         if (bss->nl_preq)
2295                 wpa_driver_nl80211_probe_req_report(bss, 0);
2296         if (bss->added_if_into_bridge) {
2297                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2298                                     bss->ifname) < 0)
2299                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2300                                    "interface %s from bridge %s: %s",
2301                                    bss->ifname, bss->brname, strerror(errno));
2302                 if (drv->rtnl_sk)
2303                         nl80211_handle_destroy(drv->rtnl_sk);
2304         }
2305         if (bss->added_bridge) {
2306                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2307                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2308                                    "bridge %s: %s",
2309                                    bss->brname, strerror(errno));
2310         }
2311
2312         nl80211_remove_monitor_interface(drv);
2313
2314         if (is_ap_interface(drv->nlmode))
2315                 wpa_driver_nl80211_del_beacon(drv);
2316
2317         if (drv->eapol_sock >= 0) {
2318                 eloop_unregister_read_sock(drv->eapol_sock);
2319                 close(drv->eapol_sock);
2320         }
2321
2322         if (drv->if_indices != drv->default_if_indices)
2323                 os_free(drv->if_indices);
2324
2325         if (drv->disabled_11b_rates)
2326                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2327
2328         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2329                                IF_OPER_UP);
2330         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2331         rfkill_deinit(drv->rfkill);
2332
2333         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2334
2335         if (!drv->start_iface_up)
2336                 (void) i802_set_iface_flags(bss, 0);
2337
2338         if (drv->addr_changed) {
2339                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2340                                           0) < 0) {
2341                         wpa_printf(MSG_DEBUG,
2342                                    "nl80211: Could not set interface down to restore permanent MAC address");
2343                 }
2344                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2345                                        drv->perm_addr) < 0) {
2346                         wpa_printf(MSG_DEBUG,
2347                                    "nl80211: Could not restore permanent MAC address");
2348                 }
2349         }
2350
2351         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2352                 if (!drv->hostapd || !drv->start_mode_ap)
2353                         wpa_driver_nl80211_set_mode(bss,
2354                                                     NL80211_IFTYPE_STATION);
2355                 nl80211_mgmt_unsubscribe(bss, "deinit");
2356         } else {
2357                 nl80211_mgmt_unsubscribe(bss, "deinit");
2358                 nl80211_del_p2pdev(bss);
2359         }
2360         nl_cb_put(drv->nl_cb);
2361
2362         nl80211_destroy_bss(drv->first_bss);
2363
2364         os_free(drv->filter_ssids);
2365
2366         os_free(drv->auth_ie);
2367
2368         if (drv->in_interface_list)
2369                 dl_list_del(&drv->list);
2370
2371         os_free(drv->extended_capa);
2372         os_free(drv->extended_capa_mask);
2373         os_free(drv->first_bss);
2374         os_free(drv);
2375 }
2376
2377
2378 /**
2379  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
2380  * @eloop_ctx: Driver private data
2381  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
2382  *
2383  * This function can be used as registered timeout when starting a scan to
2384  * generate a scan completed event if the driver does not report this.
2385  */
2386 void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2387 {
2388         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2389         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
2390                 wpa_driver_nl80211_set_mode(drv->first_bss,
2391                                             drv->ap_scan_as_station);
2392                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2393         }
2394         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
2395         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
2396 }
2397
2398
2399 static struct nl_msg *
2400 nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd,
2401                     struct wpa_driver_scan_params *params, u64 *wdev_id)
2402 {
2403         struct nl_msg *msg;
2404         size_t i;
2405         u32 scan_flags = 0;
2406
2407         msg = nlmsg_alloc();
2408         if (!msg)
2409                 return NULL;
2410
2411         nl80211_cmd(drv, msg, 0, cmd);
2412
2413         if (!wdev_id)
2414                 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2415         else
2416                 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id);
2417
2418         if (params->num_ssids) {
2419                 struct nlattr *ssids;
2420
2421                 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
2422                 if (ssids == NULL)
2423                         goto fail;
2424                 for (i = 0; i < params->num_ssids; i++) {
2425                         wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2426                                           params->ssids[i].ssid,
2427                                           params->ssids[i].ssid_len);
2428                         if (nla_put(msg, i + 1, params->ssids[i].ssid_len,
2429                                     params->ssids[i].ssid) < 0)
2430                                 goto fail;
2431                 }
2432                 nla_nest_end(msg, ssids);
2433         }
2434
2435         if (params->extra_ies) {
2436                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2437                             params->extra_ies, params->extra_ies_len);
2438                 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len,
2439                             params->extra_ies) < 0)
2440                         goto fail;
2441         }
2442
2443         if (params->freqs) {
2444                 struct nlattr *freqs;
2445                 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
2446                 if (freqs == NULL)
2447                         goto fail;
2448                 for (i = 0; params->freqs[i]; i++) {
2449                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2450                                    "MHz", params->freqs[i]);
2451                         if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0)
2452                                 goto fail;
2453                 }
2454                 nla_nest_end(msg, freqs);
2455         }
2456
2457         os_free(drv->filter_ssids);
2458         drv->filter_ssids = params->filter_ssids;
2459         params->filter_ssids = NULL;
2460         drv->num_filter_ssids = params->num_filter_ssids;
2461
2462         if (params->only_new_results) {
2463                 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH");
2464                 scan_flags |= NL80211_SCAN_FLAG_FLUSH;
2465         }
2466
2467         if (params->low_priority && drv->have_low_prio_scan) {
2468                 wpa_printf(MSG_DEBUG,
2469                            "nl80211: Add NL80211_SCAN_FLAG_LOW_PRIORITY");
2470                 scan_flags |= NL80211_SCAN_FLAG_LOW_PRIORITY;
2471         }
2472
2473         if (scan_flags)
2474                 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags);
2475
2476         return msg;
2477
2478 fail:
2479 nla_put_failure:
2480         nlmsg_free(msg);
2481         return NULL;
2482 }
2483
2484
2485 /**
2486  * wpa_driver_nl80211_scan - Request the driver to initiate scan
2487  * @bss: Pointer to private driver data from wpa_driver_nl80211_init()
2488  * @params: Scan parameters
2489  * Returns: 0 on success, -1 on failure
2490  */
2491 static int wpa_driver_nl80211_scan(struct i802_bss *bss,
2492                                    struct wpa_driver_scan_params *params)
2493 {
2494         struct wpa_driver_nl80211_data *drv = bss->drv;
2495         int ret = -1, timeout;
2496         struct nl_msg *msg = NULL;
2497
2498         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request");
2499         drv->scan_for_auth = 0;
2500
2501         msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params,
2502                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2503         if (!msg)
2504                 return -1;
2505
2506         if (params->p2p_probe) {
2507                 struct nlattr *rates;
2508
2509                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
2510
2511                 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES);
2512                 if (rates == NULL)
2513                         goto nla_put_failure;
2514
2515                 /*
2516                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
2517                  * by masking out everything else apart from the OFDM rates 6,
2518                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
2519                  * rates are left enabled.
2520                  */
2521                 NLA_PUT(msg, NL80211_BAND_2GHZ, 8,
2522                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
2523                 nla_nest_end(msg, rates);
2524
2525                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
2526         }
2527
2528         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2529         msg = NULL;
2530         if (ret) {
2531                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2532                            "(%s)", ret, strerror(-ret));
2533                 if (drv->hostapd && is_ap_interface(drv->nlmode)) {
2534                         enum nl80211_iftype old_mode = drv->nlmode;
2535
2536                         /*
2537                          * mac80211 does not allow scan requests in AP mode, so
2538                          * try to do this in station mode.
2539                          */
2540                         if (wpa_driver_nl80211_set_mode(
2541                                     bss, NL80211_IFTYPE_STATION))
2542                                 goto nla_put_failure;
2543
2544                         if (wpa_driver_nl80211_scan(bss, params)) {
2545                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
2546                                 goto nla_put_failure;
2547                         }
2548
2549                         /* Restore AP mode when processing scan results */
2550                         drv->ap_scan_as_station = old_mode;
2551                         ret = 0;
2552                 } else
2553                         goto nla_put_failure;
2554         }
2555
2556         drv->scan_state = SCAN_REQUESTED;
2557         /* Not all drivers generate "scan completed" wireless event, so try to
2558          * read results after a timeout. */
2559         timeout = 10;
2560         if (drv->scan_complete_events) {
2561                 /*
2562                  * The driver seems to deliver events to notify when scan is
2563                  * complete, so use longer timeout to avoid race conditions
2564                  * with scanning and following association request.
2565                  */
2566                 timeout = 30;
2567         }
2568         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2569                    "seconds", ret, timeout);
2570         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2571         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2572                                drv, drv->ctx);
2573
2574 nla_put_failure:
2575         nlmsg_free(msg);
2576         return ret;
2577 }
2578
2579
2580 /**
2581  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
2582  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2583  * @params: Scan parameters
2584  * @interval: Interval between scan cycles in milliseconds
2585  * Returns: 0 on success, -1 on failure or if not supported
2586  */
2587 static int wpa_driver_nl80211_sched_scan(void *priv,
2588                                          struct wpa_driver_scan_params *params,
2589                                          u32 interval)
2590 {
2591         struct i802_bss *bss = priv;
2592         struct wpa_driver_nl80211_data *drv = bss->drv;
2593         int ret = -1;
2594         struct nl_msg *msg;
2595         size_t i;
2596
2597         wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request");
2598
2599 #ifdef ANDROID
2600         if (!drv->capa.sched_scan_supported)
2601                 return android_pno_start(bss, params);
2602 #endif /* ANDROID */
2603
2604         msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params,
2605                                   bss->wdev_id_set ? &bss->wdev_id : NULL);
2606         if (!msg)
2607                 goto nla_put_failure;
2608
2609         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
2610
2611         if ((drv->num_filter_ssids &&
2612             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) ||
2613             params->filter_rssi) {
2614                 struct nlattr *match_sets;
2615                 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
2616                 if (match_sets == NULL)
2617                         goto nla_put_failure;
2618
2619                 for (i = 0; i < drv->num_filter_ssids; i++) {
2620                         struct nlattr *match_set_ssid;
2621                         wpa_hexdump_ascii(MSG_MSGDUMP,
2622                                           "nl80211: Sched scan filter SSID",
2623                                           drv->filter_ssids[i].ssid,
2624                                           drv->filter_ssids[i].ssid_len);
2625
2626                         match_set_ssid = nla_nest_start(msg, i + 1);
2627                         if (match_set_ssid == NULL)
2628                                 goto nla_put_failure;
2629                         NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
2630                                 drv->filter_ssids[i].ssid_len,
2631                                 drv->filter_ssids[i].ssid);
2632                         if (params->filter_rssi)
2633                                 NLA_PUT_U32(msg,
2634                                             NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2635                                             params->filter_rssi);
2636
2637                         nla_nest_end(msg, match_set_ssid);
2638                 }
2639
2640                 /*
2641                  * Due to backward compatibility code, newer kernels treat this
2642                  * matchset (with only an RSSI filter) as the default for all
2643                  * other matchsets, unless it's the only one, in which case the
2644                  * matchset will actually allow all SSIDs above the RSSI.
2645                  */
2646                 if (params->filter_rssi) {
2647                         struct nlattr *match_set_rssi;
2648                         match_set_rssi = nla_nest_start(msg, 0);
2649                         if (match_set_rssi == NULL)
2650                                 goto nla_put_failure;
2651                         NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI,
2652                                     params->filter_rssi);
2653                         wpa_printf(MSG_MSGDUMP,
2654                                    "nl80211: Sched scan RSSI filter %d dBm",
2655                                    params->filter_rssi);
2656                         nla_nest_end(msg, match_set_rssi);
2657                 }
2658
2659                 nla_nest_end(msg, match_sets);
2660         }
2661
2662         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2663
2664         /* TODO: if we get an error here, we should fall back to normal scan */
2665
2666         msg = NULL;
2667         if (ret) {
2668                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
2669                            "ret=%d (%s)", ret, strerror(-ret));
2670                 goto nla_put_failure;
2671         }
2672
2673         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
2674                    "scan interval %d msec", ret, interval);
2675
2676 nla_put_failure:
2677         nlmsg_free(msg);
2678         return ret;
2679 }
2680
2681
2682 /**
2683  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
2684  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
2685  * Returns: 0 on success, -1 on failure or if not supported
2686  */
2687 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
2688 {
2689         struct i802_bss *bss = priv;
2690         struct wpa_driver_nl80211_data *drv = bss->drv;
2691         int ret = 0;
2692         struct nl_msg *msg;
2693
2694 #ifdef ANDROID
2695         if (!drv->capa.sched_scan_supported)
2696                 return android_pno_stop(bss);
2697 #endif /* ANDROID */
2698
2699         msg = nlmsg_alloc();
2700         if (!msg)
2701                 return -1;
2702
2703         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
2704
2705         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2706
2707         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2708         msg = NULL;
2709         if (ret) {
2710                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
2711                            "ret=%d (%s)", ret, strerror(-ret));
2712                 goto nla_put_failure;
2713         }
2714
2715         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
2716
2717 nla_put_failure:
2718         nlmsg_free(msg);
2719         return ret;
2720 }
2721
2722
2723 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2724 {
2725         const u8 *end, *pos;
2726
2727         if (ies == NULL)
2728                 return NULL;
2729
2730         pos = ies;
2731         end = ies + ies_len;
2732
2733         while (pos + 1 < end) {
2734                 if (pos + 2 + pos[1] > end)
2735                         break;
2736                 if (pos[0] == ie)
2737                         return pos;
2738                 pos += 2 + pos[1];
2739         }
2740
2741         return NULL;
2742 }
2743
2744
2745 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2746                                  const u8 *ie, size_t ie_len)
2747 {
2748         const u8 *ssid;
2749         size_t i;
2750
2751         if (drv->filter_ssids == NULL)
2752                 return 0;
2753
2754         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2755         if (ssid == NULL)
2756                 return 1;
2757
2758         for (i = 0; i < drv->num_filter_ssids; i++) {
2759                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2760                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2761                     0)
2762                         return 0;
2763         }
2764
2765         return 1;
2766 }
2767
2768
2769 static int bss_info_handler(struct nl_msg *msg, void *arg)
2770 {
2771         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2772         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2773         struct nlattr *bss[NL80211_BSS_MAX + 1];
2774         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2775                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2776                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2777                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2778                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2779                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2780                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2781                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2782                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2783                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2784                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2785                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2786         };
2787         struct nl80211_bss_info_arg *_arg = arg;
2788         struct wpa_scan_results *res = _arg->res;
2789         struct wpa_scan_res **tmp;
2790         struct wpa_scan_res *r;
2791         const u8 *ie, *beacon_ie;
2792         size_t ie_len, beacon_ie_len;
2793         u8 *pos;
2794         size_t i;
2795
2796         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2797                   genlmsg_attrlen(gnlh, 0), NULL);
2798         if (!tb[NL80211_ATTR_BSS])
2799                 return NL_SKIP;
2800         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2801                              bss_policy))
2802                 return NL_SKIP;
2803         if (bss[NL80211_BSS_STATUS]) {
2804                 enum nl80211_bss_status status;
2805                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2806                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2807                     bss[NL80211_BSS_FREQUENCY]) {
2808                         _arg->assoc_freq =
2809                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2810                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
2811                                    _arg->assoc_freq);
2812                 }
2813                 if (status == NL80211_BSS_STATUS_IBSS_JOINED &&
2814                     bss[NL80211_BSS_FREQUENCY]) {
2815                         _arg->ibss_freq =
2816                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2817                         wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz",
2818                                    _arg->ibss_freq);
2819                 }
2820                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
2821                     bss[NL80211_BSS_BSSID]) {
2822                         os_memcpy(_arg->assoc_bssid,
2823                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
2824                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
2825                                    MACSTR, MAC2STR(_arg->assoc_bssid));
2826                 }
2827         }
2828         if (!res)
2829                 return NL_SKIP;
2830         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2831                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2832                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2833         } else {
2834                 ie = NULL;
2835                 ie_len = 0;
2836         }
2837         if (bss[NL80211_BSS_BEACON_IES]) {
2838                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2839                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2840         } else {
2841                 beacon_ie = NULL;
2842                 beacon_ie_len = 0;
2843         }
2844
2845         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2846                                   ie ? ie_len : beacon_ie_len))
2847                 return NL_SKIP;
2848
2849         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2850         if (r == NULL)
2851                 return NL_SKIP;
2852         if (bss[NL80211_BSS_BSSID])
2853                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2854                           ETH_ALEN);
2855         if (bss[NL80211_BSS_FREQUENCY])
2856                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2857         if (bss[NL80211_BSS_BEACON_INTERVAL])
2858                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2859         if (bss[NL80211_BSS_CAPABILITY])
2860                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2861         r->flags |= WPA_SCAN_NOISE_INVALID;
2862         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2863                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2864                 r->level /= 100; /* mBm to dBm */
2865                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2866         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2867                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2868                 r->flags |= WPA_SCAN_QUAL_INVALID;
2869         } else
2870                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2871         if (bss[NL80211_BSS_TSF])
2872                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2873         if (bss[NL80211_BSS_SEEN_MS_AGO])
2874                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2875         r->ie_len = ie_len;
2876         pos = (u8 *) (r + 1);
2877         if (ie) {
2878                 os_memcpy(pos, ie, ie_len);
2879                 pos += ie_len;
2880         }
2881         r->beacon_ie_len = beacon_ie_len;
2882         if (beacon_ie)
2883                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2884
2885         if (bss[NL80211_BSS_STATUS]) {
2886                 enum nl80211_bss_status status;
2887                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2888                 switch (status) {
2889                 case NL80211_BSS_STATUS_AUTHENTICATED:
2890                         r->flags |= WPA_SCAN_AUTHENTICATED;
2891                         break;
2892                 case NL80211_BSS_STATUS_ASSOCIATED:
2893                         r->flags |= WPA_SCAN_ASSOCIATED;
2894                         break;
2895                 default:
2896                         break;
2897                 }
2898         }
2899
2900         /*
2901          * cfg80211 maintains separate BSS table entries for APs if the same
2902          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
2903          * not use frequency as a separate key in the BSS table, so filter out
2904          * duplicated entries. Prefer associated BSS entry in such a case in
2905          * order to get the correct frequency into the BSS table. Similarly,
2906          * prefer newer entries over older.
2907          */
2908         for (i = 0; i < res->num; i++) {
2909                 const u8 *s1, *s2;
2910                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
2911                         continue;
2912
2913                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
2914                                     res->res[i]->ie_len, WLAN_EID_SSID);
2915                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
2916                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
2917                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
2918                         continue;
2919
2920                 /* Same BSSID,SSID was already included in scan results */
2921                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
2922                            "for " MACSTR, MAC2STR(r->bssid));
2923
2924                 if (((r->flags & WPA_SCAN_ASSOCIATED) &&
2925                      !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) ||
2926                     r->age < res->res[i]->age) {
2927                         os_free(res->res[i]);
2928                         res->res[i] = r;
2929                 } else
2930                         os_free(r);
2931                 return NL_SKIP;
2932         }
2933
2934         tmp = os_realloc_array(res->res, res->num + 1,
2935                                sizeof(struct wpa_scan_res *));
2936         if (tmp == NULL) {
2937                 os_free(r);
2938                 return NL_SKIP;
2939         }
2940         tmp[res->num++] = r;
2941         res->res = tmp;
2942
2943         return NL_SKIP;
2944 }
2945
2946
2947 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2948                                  const u8 *addr)
2949 {
2950         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2951                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2952                            "mismatch (" MACSTR ")", MAC2STR(addr));
2953                 wpa_driver_nl80211_mlme(drv, addr,
2954                                         NL80211_CMD_DEAUTHENTICATE,
2955                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2956         }
2957 }
2958
2959
2960 static void wpa_driver_nl80211_check_bss_status(
2961         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2962 {
2963         size_t i;
2964
2965         for (i = 0; i < res->num; i++) {
2966                 struct wpa_scan_res *r = res->res[i];
2967                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2968                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2969                                    "indicates BSS status with " MACSTR
2970                                    " as authenticated",
2971                                    MAC2STR(r->bssid));
2972                         if (is_sta_interface(drv->nlmode) &&
2973                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2974                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2975                             0) {
2976                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2977                                            " in local state (auth=" MACSTR
2978                                            " assoc=" MACSTR ")",
2979                                            MAC2STR(drv->auth_bssid),
2980                                            MAC2STR(drv->bssid));
2981                                 clear_state_mismatch(drv, r->bssid);
2982                         }
2983                 }
2984
2985                 if (r->flags & WPA_SCAN_ASSOCIATED) {
2986                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2987                                    "indicate BSS status with " MACSTR
2988                                    " as associated",
2989                                    MAC2STR(r->bssid));
2990                         if (is_sta_interface(drv->nlmode) &&
2991                             !drv->associated) {
2992                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2993                                            "(not associated) does not match "
2994                                            "with BSS state");
2995                                 clear_state_mismatch(drv, r->bssid);
2996                         } else if (is_sta_interface(drv->nlmode) &&
2997                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2998                                    0) {
2999                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3000                                            "(associated with " MACSTR ") does "
3001                                            "not match with BSS state",
3002                                            MAC2STR(drv->bssid));
3003                                 clear_state_mismatch(drv, r->bssid);
3004                                 clear_state_mismatch(drv, drv->bssid);
3005                         }
3006                 }
3007         }
3008 }
3009
3010
3011 static struct wpa_scan_results *
3012 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3013 {
3014         struct nl_msg *msg;
3015         struct wpa_scan_results *res;
3016         int ret;
3017         struct nl80211_bss_info_arg arg;
3018
3019         res = os_zalloc(sizeof(*res));
3020         if (res == NULL)
3021                 return NULL;
3022         msg = nlmsg_alloc();
3023         if (!msg)
3024                 goto nla_put_failure;
3025
3026         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
3027         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
3028                 goto nla_put_failure;
3029
3030         arg.drv = drv;
3031         arg.res = res;
3032         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
3033         msg = NULL;
3034         if (ret == 0) {
3035                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
3036                            "BSSes)", (unsigned long) res->num);
3037                 nl80211_get_noise_for_scan_results(drv, res);
3038                 return res;
3039         }
3040         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
3041                    "(%s)", ret, strerror(-ret));
3042 nla_put_failure:
3043         nlmsg_free(msg);
3044         wpa_scan_results_free(res);
3045         return NULL;
3046 }
3047
3048
3049 /**
3050  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
3051  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
3052  * Returns: Scan results on success, -1 on failure
3053  */
3054 static struct wpa_scan_results *
3055 wpa_driver_nl80211_get_scan_results(void *priv)
3056 {
3057         struct i802_bss *bss = priv;
3058         struct wpa_driver_nl80211_data *drv = bss->drv;
3059         struct wpa_scan_results *res;
3060
3061         res = nl80211_get_scan_results(drv);
3062         if (res)
3063                 wpa_driver_nl80211_check_bss_status(drv, res);
3064         return res;
3065 }
3066
3067
3068 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
3069 {
3070         struct wpa_scan_results *res;
3071         size_t i;
3072
3073         res = nl80211_get_scan_results(drv);
3074         if (res == NULL) {
3075                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
3076                 return;
3077         }
3078
3079         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
3080         for (i = 0; i < res->num; i++) {
3081                 struct wpa_scan_res *r = res->res[i];
3082                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
3083                            (int) i, (int) res->num, MAC2STR(r->bssid),
3084                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
3085                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
3086         }
3087
3088         wpa_scan_results_free(res);
3089 }
3090
3091
3092 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
3093 {
3094         switch (alg) {
3095         case WPA_ALG_WEP:
3096                 if (key_len == 5)
3097                         return WLAN_CIPHER_SUITE_WEP40;
3098                 return WLAN_CIPHER_SUITE_WEP104;
3099         case WPA_ALG_TKIP:
3100                 return WLAN_CIPHER_SUITE_TKIP;
3101         case WPA_ALG_CCMP:
3102                 return WLAN_CIPHER_SUITE_CCMP;
3103         case WPA_ALG_GCMP:
3104                 return WLAN_CIPHER_SUITE_GCMP;
3105         case WPA_ALG_CCMP_256:
3106                 return WLAN_CIPHER_SUITE_CCMP_256;
3107         case WPA_ALG_GCMP_256:
3108                 return WLAN_CIPHER_SUITE_GCMP_256;
3109         case WPA_ALG_IGTK:
3110                 return WLAN_CIPHER_SUITE_AES_CMAC;
3111         case WPA_ALG_BIP_GMAC_128:
3112                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
3113         case WPA_ALG_BIP_GMAC_256:
3114                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
3115         case WPA_ALG_BIP_CMAC_256:
3116                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
3117         case WPA_ALG_SMS4:
3118                 return WLAN_CIPHER_SUITE_SMS4;
3119         case WPA_ALG_KRK:
3120                 return WLAN_CIPHER_SUITE_KRK;
3121         case WPA_ALG_NONE:
3122         case WPA_ALG_PMK:
3123                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
3124                            alg);
3125                 return 0;
3126         }
3127
3128         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
3129                    alg);
3130         return 0;
3131 }
3132
3133
3134 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
3135 {
3136         switch (cipher) {
3137         case WPA_CIPHER_CCMP_256:
3138                 return WLAN_CIPHER_SUITE_CCMP_256;
3139         case WPA_CIPHER_GCMP_256:
3140                 return WLAN_CIPHER_SUITE_GCMP_256;
3141         case WPA_CIPHER_CCMP:
3142                 return WLAN_CIPHER_SUITE_CCMP;
3143         case WPA_CIPHER_GCMP:
3144                 return WLAN_CIPHER_SUITE_GCMP;
3145         case WPA_CIPHER_TKIP:
3146                 return WLAN_CIPHER_SUITE_TKIP;
3147         case WPA_CIPHER_WEP104:
3148                 return WLAN_CIPHER_SUITE_WEP104;
3149         case WPA_CIPHER_WEP40:
3150                 return WLAN_CIPHER_SUITE_WEP40;
3151         case WPA_CIPHER_GTK_NOT_USED:
3152                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
3153         }
3154
3155         return 0;
3156 }
3157
3158
3159 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
3160                                        int max_suites)
3161 {
3162         int num_suites = 0;
3163
3164         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
3165                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
3166         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
3167                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
3168         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
3169                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
3170         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
3171                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
3172         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
3173                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
3174         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
3175                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
3176         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
3177                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
3178
3179         return num_suites;
3180 }
3181
3182
3183 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
3184                                   const u8 *key, size_t key_len)
3185 {
3186         struct nl_msg *msg;
3187         int ret = 0;
3188
3189         if (!drv->key_mgmt_set_key_vendor_cmd_avail)
3190                 return 0;
3191
3192         msg = nlmsg_alloc();
3193         if (!msg)
3194                 return -1;
3195
3196         nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
3197         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3198         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
3199         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
3200                     QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY);
3201         NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, key_len, key);
3202         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3203         msg = NULL;
3204         if (ret) {
3205                 wpa_printf(MSG_DEBUG,
3206                            "nl80211: Key management set key failed: ret=%d (%s)",
3207                            ret, strerror(-ret));
3208         }
3209
3210 nla_put_failure:
3211         nlmsg_free(msg);
3212         return ret;
3213 }
3214
3215
3216 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
3217                                       enum wpa_alg alg, const u8 *addr,
3218                                       int key_idx, int set_tx,
3219                                       const u8 *seq, size_t seq_len,
3220                                       const u8 *key, size_t key_len)
3221 {
3222         struct wpa_driver_nl80211_data *drv = bss->drv;
3223         int ifindex;
3224         struct nl_msg *msg;
3225         int ret;
3226         int tdls = 0;
3227
3228         /* Ignore for P2P Device */
3229         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
3230                 return 0;
3231
3232         ifindex = if_nametoindex(ifname);
3233         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
3234                    "set_tx=%d seq_len=%lu key_len=%lu",
3235                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
3236                    (unsigned long) seq_len, (unsigned long) key_len);
3237 #ifdef CONFIG_TDLS
3238         if (key_idx == -1) {
3239                 key_idx = 0;
3240                 tdls = 1;
3241         }
3242 #endif /* CONFIG_TDLS */
3243
3244         if (alg == WPA_ALG_PMK && drv->key_mgmt_set_key_vendor_cmd_avail) {
3245                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
3246                            __func__);
3247                 ret = issue_key_mgmt_set_key(drv, key, key_len);
3248                 return ret;
3249         }
3250
3251         msg = nlmsg_alloc();
3252         if (!msg)
3253                 return -ENOMEM;
3254
3255         if (alg == WPA_ALG_NONE) {
3256                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
3257         } else {
3258                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
3259                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
3260                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
3261                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
3262                             wpa_alg_to_cipher_suite(alg, key_len));
3263         }
3264
3265         if (seq && seq_len) {
3266                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
3267                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
3268         }
3269
3270         if (addr && !is_broadcast_ether_addr(addr)) {
3271                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
3272                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3273
3274                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
3275                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
3276                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
3277                                     NL80211_KEYTYPE_GROUP);
3278                 }
3279         } else if (addr && is_broadcast_ether_addr(addr)) {
3280                 struct nlattr *types;
3281
3282                 wpa_printf(MSG_DEBUG, "   broadcast key");
3283
3284                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3285                 if (!types)
3286                         goto nla_put_failure;
3287                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3288                 nla_nest_end(msg, types);
3289         }
3290         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3291         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3292
3293         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3294         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
3295                 ret = 0;
3296         if (ret)
3297                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
3298                            ret, strerror(-ret));
3299
3300         /*
3301          * If we failed or don't need to set the default TX key (below),
3302          * we're done here.
3303          */
3304         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
3305                 return ret;
3306         if (is_ap_interface(drv->nlmode) && addr &&
3307             !is_broadcast_ether_addr(addr))
3308                 return ret;
3309
3310         msg = nlmsg_alloc();
3311         if (!msg)
3312                 return -ENOMEM;
3313
3314         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
3315         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
3316         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3317         if (alg == WPA_ALG_IGTK)
3318                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
3319         else
3320                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3321         if (addr && is_broadcast_ether_addr(addr)) {
3322                 struct nlattr *types;
3323
3324                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3325                 if (!types)
3326                         goto nla_put_failure;
3327                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
3328                 nla_nest_end(msg, types);
3329         } else if (addr) {
3330                 struct nlattr *types;
3331
3332                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
3333                 if (!types)
3334                         goto nla_put_failure;
3335                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST);
3336                 nla_nest_end(msg, types);
3337         }
3338
3339         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3340         if (ret == -ENOENT)
3341                 ret = 0;
3342         if (ret)
3343                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
3344                            "err=%d %s)", ret, strerror(-ret));
3345         return ret;
3346
3347 nla_put_failure:
3348         nlmsg_free(msg);
3349         return -ENOBUFS;
3350 }
3351
3352
3353 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
3354                       int key_idx, int defkey,
3355                       const u8 *seq, size_t seq_len,
3356                       const u8 *key, size_t key_len)
3357 {
3358         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
3359         if (!key_attr)
3360                 return -1;
3361
3362         if (defkey && alg == WPA_ALG_IGTK)
3363                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
3364         else if (defkey)
3365                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3366
3367         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
3368
3369         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3370                     wpa_alg_to_cipher_suite(alg, key_len));
3371
3372         if (seq && seq_len)
3373                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
3374
3375         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
3376
3377         nla_nest_end(msg, key_attr);
3378
3379         return 0;
3380  nla_put_failure:
3381         return -1;
3382 }
3383
3384
3385 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
3386                                  struct nl_msg *msg)
3387 {
3388         int i, privacy = 0;
3389         struct nlattr *nl_keys, *nl_key;
3390
3391         for (i = 0; i < 4; i++) {
3392                 if (!params->wep_key[i])
3393                         continue;
3394                 privacy = 1;
3395                 break;
3396         }
3397         if (params->wps == WPS_MODE_PRIVACY)
3398                 privacy = 1;
3399         if (params->pairwise_suite &&
3400             params->pairwise_suite != WPA_CIPHER_NONE)
3401                 privacy = 1;
3402
3403         if (!privacy)
3404                 return 0;
3405
3406         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
3407
3408         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
3409         if (!nl_keys)
3410                 goto nla_put_failure;
3411
3412         for (i = 0; i < 4; i++) {
3413                 if (!params->wep_key[i])
3414                         continue;
3415
3416                 nl_key = nla_nest_start(msg, i);
3417                 if (!nl_key)
3418                         goto nla_put_failure;
3419
3420                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
3421                         params->wep_key[i]);
3422                 if (params->wep_key_len[i] == 5)
3423                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3424                                     WLAN_CIPHER_SUITE_WEP40);
3425                 else
3426                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
3427                                     WLAN_CIPHER_SUITE_WEP104);
3428
3429                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
3430
3431                 if (i == params->wep_tx_keyidx)
3432                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
3433
3434                 nla_nest_end(msg, nl_key);
3435         }
3436         nla_nest_end(msg, nl_keys);
3437
3438         return 0;
3439
3440 nla_put_failure:
3441         return -ENOBUFS;
3442 }
3443
3444
3445 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
3446                                    const u8 *addr, int cmd, u16 reason_code,
3447                                    int local_state_change)
3448 {
3449         int ret = -1;
3450         struct nl_msg *msg;
3451
3452         msg = nlmsg_alloc();
3453         if (!msg)
3454                 return -1;
3455
3456         nl80211_cmd(drv, msg, 0, cmd);
3457
3458         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3459         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
3460         if (addr)
3461                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3462         if (local_state_change)
3463                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3464
3465         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3466         msg = NULL;
3467         if (ret) {
3468                 wpa_dbg(drv->ctx, MSG_DEBUG,
3469                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
3470                         reason_code, ret, strerror(-ret));
3471                 goto nla_put_failure;
3472         }
3473         ret = 0;
3474
3475 nla_put_failure:
3476         nlmsg_free(msg);
3477         return ret;
3478 }
3479
3480
3481 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
3482                                          int reason_code)
3483 {
3484         int ret;
3485
3486         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
3487         nl80211_mark_disconnected(drv);
3488         /* Disconnect command doesn't need BSSID - it uses cached value */
3489         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
3490                                       reason_code, 0);
3491         /*
3492          * For locally generated disconnect, supplicant already generates a
3493          * DEAUTH event, so ignore the event from NL80211.
3494          */
3495         drv->ignore_next_local_disconnect = ret == 0;
3496
3497         return ret;
3498 }
3499
3500
3501 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
3502                                              const u8 *addr, int reason_code)
3503 {
3504         struct wpa_driver_nl80211_data *drv = bss->drv;
3505         int ret;
3506
3507         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
3508                 nl80211_mark_disconnected(drv);
3509                 return nl80211_leave_ibss(drv);
3510         }
3511         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
3512                 return wpa_driver_nl80211_disconnect(drv, reason_code);
3513         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
3514                    __func__, MAC2STR(addr), reason_code);
3515         nl80211_mark_disconnected(drv);
3516         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
3517                                       reason_code, 0);
3518         /*
3519          * For locally generated deauthenticate, supplicant already generates a
3520          * DEAUTH event, so ignore the event from NL80211.
3521          */
3522         drv->ignore_next_local_deauth = ret == 0;
3523         return ret;
3524 }
3525
3526
3527 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
3528                                      struct wpa_driver_auth_params *params)
3529 {
3530         int i;
3531
3532         drv->auth_freq = params->freq;
3533         drv->auth_alg = params->auth_alg;
3534         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
3535         drv->auth_local_state_change = params->local_state_change;
3536         drv->auth_p2p = params->p2p;
3537
3538         if (params->bssid)
3539                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
3540         else
3541                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
3542
3543         if (params->ssid) {
3544                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
3545                 drv->auth_ssid_len = params->ssid_len;
3546         } else
3547                 drv->auth_ssid_len = 0;
3548
3549
3550         os_free(drv->auth_ie);
3551         drv->auth_ie = NULL;
3552         drv->auth_ie_len = 0;
3553         if (params->ie) {
3554                 drv->auth_ie = os_malloc(params->ie_len);
3555                 if (drv->auth_ie) {
3556                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
3557                         drv->auth_ie_len = params->ie_len;
3558                 }
3559         }
3560
3561         for (i = 0; i < 4; i++) {
3562                 if (params->wep_key[i] && params->wep_key_len[i] &&
3563                     params->wep_key_len[i] <= 16) {
3564                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
3565                                   params->wep_key_len[i]);
3566                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
3567                 } else
3568                         drv->auth_wep_key_len[i] = 0;
3569         }
3570 }
3571
3572
3573 static int wpa_driver_nl80211_authenticate(
3574         struct i802_bss *bss, struct wpa_driver_auth_params *params)
3575 {
3576         struct wpa_driver_nl80211_data *drv = bss->drv;
3577         int ret = -1, i;
3578         struct nl_msg *msg;
3579         enum nl80211_auth_type type;
3580         enum nl80211_iftype nlmode;
3581         int count = 0;
3582         int is_retry;
3583
3584         is_retry = drv->retry_auth;
3585         drv->retry_auth = 0;
3586         drv->ignore_deauth_event = 0;
3587
3588         nl80211_mark_disconnected(drv);
3589         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3590         if (params->bssid)
3591                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3592         else
3593                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3594         /* FIX: IBSS mode */
3595         nlmode = params->p2p ?
3596                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3597         if (drv->nlmode != nlmode &&
3598             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3599                 return -1;
3600
3601 retry:
3602         msg = nlmsg_alloc();
3603         if (!msg)
3604                 return -1;
3605
3606         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3607                    drv->ifindex);
3608
3609         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
3610
3611         for (i = 0; i < 4; i++) {
3612                 if (!params->wep_key[i])
3613                         continue;
3614                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3615                                            NULL, i,
3616                                            i == params->wep_tx_keyidx, NULL, 0,
3617                                            params->wep_key[i],
3618                                            params->wep_key_len[i]);
3619                 if (params->wep_tx_keyidx != i)
3620                         continue;
3621                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3622                                params->wep_key[i], params->wep_key_len[i])) {
3623                         nlmsg_free(msg);
3624                         return -1;
3625                 }
3626         }
3627
3628         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3629         if (params->bssid) {
3630                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3631                            MAC2STR(params->bssid));
3632                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3633         }
3634         if (params->freq) {
3635                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3636                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3637         }
3638         if (params->ssid) {
3639                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3640                                   params->ssid, params->ssid_len);
3641                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3642                         params->ssid);
3643         }
3644         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3645         if (params->ie)
3646                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
3647         if (params->sae_data) {
3648                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3649                             params->sae_data_len);
3650                 NLA_PUT(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3651                         params->sae_data);
3652         }
3653         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3654                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3655         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3656                 type = NL80211_AUTHTYPE_SHARED_KEY;
3657         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3658                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3659         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3660                 type = NL80211_AUTHTYPE_FT;
3661         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3662                 type = NL80211_AUTHTYPE_SAE;
3663         else
3664                 goto nla_put_failure;
3665         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3666         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3667         if (params->local_state_change) {
3668                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3669                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
3670         }
3671
3672         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3673         msg = NULL;
3674         if (ret) {
3675                 wpa_dbg(drv->ctx, MSG_DEBUG,
3676                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3677                         ret, strerror(-ret));
3678                 count++;
3679                 if (ret == -EALREADY && count == 1 && params->bssid &&
3680                     !params->local_state_change) {
3681                         /*
3682                          * mac80211 does not currently accept new
3683                          * authentication if we are already authenticated. As a
3684                          * workaround, force deauthentication and try again.
3685                          */
3686                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3687                                    "after forced deauthentication");
3688                         drv->ignore_deauth_event = 1;
3689                         wpa_driver_nl80211_deauthenticate(
3690                                 bss, params->bssid,
3691                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3692                         nlmsg_free(msg);
3693                         goto retry;
3694                 }
3695
3696                 if (ret == -ENOENT && params->freq && !is_retry) {
3697                         /*
3698                          * cfg80211 has likely expired the BSS entry even
3699                          * though it was previously available in our internal
3700                          * BSS table. To recover quickly, start a single
3701                          * channel scan on the specified channel.
3702                          */
3703                         struct wpa_driver_scan_params scan;
3704                         int freqs[2];
3705
3706                         os_memset(&scan, 0, sizeof(scan));
3707                         scan.num_ssids = 1;
3708                         if (params->ssid) {
3709                                 scan.ssids[0].ssid = params->ssid;
3710                                 scan.ssids[0].ssid_len = params->ssid_len;
3711                         }
3712                         freqs[0] = params->freq;
3713                         freqs[1] = 0;
3714                         scan.freqs = freqs;
3715                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3716                                    "channel scan to refresh cfg80211 BSS "
3717                                    "entry");
3718                         ret = wpa_driver_nl80211_scan(bss, &scan);
3719                         if (ret == 0) {
3720                                 nl80211_copy_auth_params(drv, params);
3721                                 drv->scan_for_auth = 1;
3722                         }
3723                 } else if (is_retry) {
3724                         /*
3725                          * Need to indicate this with an event since the return
3726                          * value from the retry is not delivered to core code.
3727                          */
3728                         union wpa_event_data event;
3729                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3730                                    "failed");
3731                         os_memset(&event, 0, sizeof(event));
3732                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3733                                   ETH_ALEN);
3734                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3735                                              &event);
3736                 }
3737
3738                 goto nla_put_failure;
3739         }
3740         ret = 0;
3741         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
3742                    "successfully");
3743
3744 nla_put_failure:
3745         nlmsg_free(msg);
3746         return ret;
3747 }
3748
3749
3750 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3751 {
3752         struct wpa_driver_auth_params params;
3753         struct i802_bss *bss = drv->first_bss;
3754         int i;
3755
3756         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3757
3758         os_memset(&params, 0, sizeof(params));
3759         params.freq = drv->auth_freq;
3760         params.auth_alg = drv->auth_alg;
3761         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3762         params.local_state_change = drv->auth_local_state_change;
3763         params.p2p = drv->auth_p2p;
3764
3765         if (!is_zero_ether_addr(drv->auth_bssid_))
3766                 params.bssid = drv->auth_bssid_;
3767
3768         if (drv->auth_ssid_len) {
3769                 params.ssid = drv->auth_ssid;
3770                 params.ssid_len = drv->auth_ssid_len;
3771         }
3772
3773         params.ie = drv->auth_ie;
3774         params.ie_len = drv->auth_ie_len;
3775
3776         for (i = 0; i < 4; i++) {
3777                 if (drv->auth_wep_key_len[i]) {
3778                         params.wep_key[i] = drv->auth_wep_key[i];
3779                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3780                 }
3781         }
3782
3783         drv->retry_auth = 1;
3784         return wpa_driver_nl80211_authenticate(bss, &params);
3785 }
3786
3787
3788 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3789                                          const void *data, size_t len,
3790                                          int encrypt, int noack,
3791                                          unsigned int freq, int no_cck,
3792                                          int offchanok, unsigned int wait_time)
3793 {
3794         struct wpa_driver_nl80211_data *drv = bss->drv;
3795         u64 cookie;
3796         int res;
3797
3798         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3799                 freq = nl80211_get_assoc_freq(drv);
3800                 wpa_printf(MSG_DEBUG,
3801                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3802                            freq);
3803         }
3804         if (freq == 0) {
3805                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3806                            bss->freq);
3807                 freq = bss->freq;
3808         }
3809
3810         if (drv->use_monitor) {
3811                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3812                            freq, bss->freq);
3813                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3814         }
3815
3816         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3817         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3818                                      &cookie, no_cck, noack, offchanok);
3819         if (res == 0 && !noack) {
3820                 const struct ieee80211_mgmt *mgmt;
3821                 u16 fc;
3822
3823                 mgmt = (const struct ieee80211_mgmt *) data;
3824                 fc = le_to_host16(mgmt->frame_control);
3825                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3826                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3827                         wpa_printf(MSG_MSGDUMP,
3828                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3829                                    (long long unsigned int)
3830                                    drv->send_action_cookie,
3831                                    (long long unsigned int) cookie);
3832                         drv->send_action_cookie = cookie;
3833                 }
3834         }
3835
3836         return res;
3837 }
3838
3839
3840 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3841                                         size_t data_len, int noack,
3842                                         unsigned int freq, int no_cck,
3843                                         int offchanok,
3844                                         unsigned int wait_time)
3845 {
3846         struct wpa_driver_nl80211_data *drv = bss->drv;
3847         struct ieee80211_mgmt *mgmt;
3848         int encrypt = 1;
3849         u16 fc;
3850
3851         mgmt = (struct ieee80211_mgmt *) data;
3852         fc = le_to_host16(mgmt->frame_control);
3853         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3854                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3855                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3856                    fc, fc2str(fc), drv->nlmode);
3857
3858         if ((is_sta_interface(drv->nlmode) ||
3859              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3860             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3861             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3862                 /*
3863                  * The use of last_mgmt_freq is a bit of a hack,
3864                  * but it works due to the single-threaded nature
3865                  * of wpa_supplicant.
3866                  */
3867                 if (freq == 0) {
3868                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3869                                    drv->last_mgmt_freq);
3870                         freq = drv->last_mgmt_freq;
3871                 }
3872                 return nl80211_send_frame_cmd(bss, freq, 0,
3873                                               data, data_len, NULL, 1, noack,
3874                                               1);
3875         }
3876
3877         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3878                 if (freq == 0) {
3879                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3880                                    bss->freq);
3881                         freq = bss->freq;
3882                 }
3883                 return nl80211_send_frame_cmd(bss, freq,
3884                                               (int) freq == bss->freq ? 0 :
3885                                               wait_time,
3886                                               data, data_len,
3887                                               &drv->send_action_cookie,
3888                                               no_cck, noack, offchanok);
3889         }
3890
3891         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3892             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3893                 /*
3894                  * Only one of the authentication frame types is encrypted.
3895                  * In order for static WEP encryption to work properly (i.e.,
3896                  * to not encrypt the frame), we need to tell mac80211 about
3897                  * the frames that must not be encrypted.
3898                  */
3899                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3900                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3901                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3902                         encrypt = 0;
3903         }
3904
3905         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3906         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3907                                              noack, freq, no_cck, offchanok,
3908                                              wait_time);
3909 }
3910
3911
3912 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3913                            int slot, int ht_opmode, int ap_isolate,
3914                            int *basic_rates)
3915 {
3916         struct wpa_driver_nl80211_data *drv = bss->drv;
3917         struct nl_msg *msg;
3918
3919         msg = nlmsg_alloc();
3920         if (!msg)
3921                 return -ENOMEM;
3922
3923         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
3924
3925         if (cts >= 0)
3926                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3927         if (preamble >= 0)
3928                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3929         if (slot >= 0)
3930                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3931         if (ht_opmode >= 0)
3932                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
3933         if (ap_isolate >= 0)
3934                 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
3935
3936         if (basic_rates) {
3937                 u8 rates[NL80211_MAX_SUPP_RATES];
3938                 u8 rates_len = 0;
3939                 int i;
3940
3941                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
3942                      i++)
3943                         rates[rates_len++] = basic_rates[i] / 5;
3944
3945                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3946         }
3947
3948         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3949
3950         return send_and_recv_msgs(drv, msg, NULL, NULL);
3951  nla_put_failure:
3952         nlmsg_free(msg);
3953         return -ENOBUFS;
3954 }
3955
3956
3957 static int wpa_driver_nl80211_set_acl(void *priv,
3958                                       struct hostapd_acl_params *params)
3959 {
3960         struct i802_bss *bss = priv;
3961         struct wpa_driver_nl80211_data *drv = bss->drv;
3962         struct nl_msg *msg;
3963         struct nlattr *acl;
3964         unsigned int i;
3965         int ret = 0;
3966
3967         if (!(drv->capa.max_acl_mac_addrs))
3968                 return -ENOTSUP;
3969
3970         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3971                 return -ENOTSUP;
3972
3973         msg = nlmsg_alloc();
3974         if (!msg)
3975                 return -ENOMEM;
3976
3977         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3978                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3979
3980         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_MAC_ACL);
3981
3982         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3983
3984         NLA_PUT_U32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3985                     NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3986                     NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED);
3987
3988         acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
3989         if (acl == NULL)
3990                 goto nla_put_failure;
3991
3992         for (i = 0; i < params->num_mac_acl; i++)
3993                 NLA_PUT(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr);
3994
3995         nla_nest_end(msg, acl);
3996
3997         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3998         msg = NULL;
3999         if (ret) {
4000                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
4001                            ret, strerror(-ret));
4002         }
4003
4004 nla_put_failure:
4005         nlmsg_free(msg);
4006
4007         return ret;
4008 }
4009
4010
4011 static int wpa_driver_nl80211_set_ap(void *priv,
4012                                      struct wpa_driver_ap_params *params)
4013 {
4014         struct i802_bss *bss = priv;
4015         struct wpa_driver_nl80211_data *drv = bss->drv;
4016         struct nl_msg *msg;
4017         u8 cmd = NL80211_CMD_NEW_BEACON;
4018         int ret;
4019         int beacon_set;
4020         int ifindex = if_nametoindex(bss->ifname);
4021         int num_suites;
4022         int smps_mode;
4023         u32 suites[10], suite;
4024         u32 ver;
4025
4026         beacon_set = bss->beacon_set;
4027
4028         msg = nlmsg_alloc();
4029         if (!msg)
4030                 return -ENOMEM;
4031
4032         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
4033                    beacon_set);
4034         if (beacon_set)
4035                 cmd = NL80211_CMD_SET_BEACON;
4036
4037         nl80211_cmd(drv, msg, 0, cmd);
4038         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
4039                     params->head, params->head_len);
4040         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
4041         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
4042                     params->tail, params->tail_len);
4043         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
4044         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", ifindex);
4045         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4046         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
4047         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
4048         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
4049         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
4050         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
4051                           params->ssid, params->ssid_len);
4052         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4053                 params->ssid);
4054         if (params->proberesp && params->proberesp_len) {
4055                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
4056                             params->proberesp, params->proberesp_len);
4057                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
4058                         params->proberesp);
4059         }
4060         switch (params->hide_ssid) {
4061         case NO_SSID_HIDING:
4062                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
4063                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4064                             NL80211_HIDDEN_SSID_NOT_IN_USE);
4065                 break;
4066         case HIDDEN_SSID_ZERO_LEN:
4067                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
4068                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4069                             NL80211_HIDDEN_SSID_ZERO_LEN);
4070                 break;
4071         case HIDDEN_SSID_ZERO_CONTENTS:
4072                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
4073                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
4074                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
4075                 break;
4076         }
4077         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
4078         if (params->privacy)
4079                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4080         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
4081         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
4082             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
4083                 /* Leave out the attribute */
4084         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
4085                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4086                             NL80211_AUTHTYPE_SHARED_KEY);
4087         else
4088                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
4089                             NL80211_AUTHTYPE_OPEN_SYSTEM);
4090
4091         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
4092         ver = 0;
4093         if (params->wpa_version & WPA_PROTO_WPA)
4094                 ver |= NL80211_WPA_VERSION_1;
4095         if (params->wpa_version & WPA_PROTO_RSN)
4096                 ver |= NL80211_WPA_VERSION_2;
4097         if (ver)
4098                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4099
4100         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
4101                    params->key_mgmt_suites);
4102         num_suites = 0;
4103         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
4104                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
4105         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
4106                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
4107         if (num_suites) {
4108                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
4109                         num_suites * sizeof(u32), suites);
4110         }
4111
4112         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
4113             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
4114                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
4115
4116         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
4117                    params->pairwise_ciphers);
4118         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
4119                                                  suites, ARRAY_SIZE(suites));
4120         if (num_suites) {
4121                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4122                         num_suites * sizeof(u32), suites);
4123         }
4124
4125         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
4126                    params->group_cipher);
4127         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
4128         if (suite)
4129                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite);
4130
4131         switch (params->smps_mode) {
4132         case HT_CAP_INFO_SMPS_DYNAMIC:
4133                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
4134                 smps_mode = NL80211_SMPS_DYNAMIC;
4135                 break;
4136         case HT_CAP_INFO_SMPS_STATIC:
4137                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
4138                 smps_mode = NL80211_SMPS_STATIC;
4139                 break;
4140         default:
4141                 /* invalid - fallback to smps off */
4142         case HT_CAP_INFO_SMPS_DISABLED:
4143                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
4144                 smps_mode = NL80211_SMPS_OFF;
4145                 break;
4146         }
4147         NLA_PUT_U32(msg, NL80211_ATTR_SMPS_MODE, smps_mode);
4148
4149         if (params->beacon_ies) {
4150                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
4151                                 params->beacon_ies);
4152                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
4153                         wpabuf_head(params->beacon_ies));
4154         }
4155         if (params->proberesp_ies) {
4156                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
4157                                 params->proberesp_ies);
4158                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
4159                         wpabuf_len(params->proberesp_ies),
4160                         wpabuf_head(params->proberesp_ies));
4161         }
4162         if (params->assocresp_ies) {
4163                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
4164                                 params->assocresp_ies);
4165                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
4166                         wpabuf_len(params->assocresp_ies),
4167                         wpabuf_head(params->assocresp_ies));
4168         }
4169
4170         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
4171                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
4172                            params->ap_max_inactivity);
4173                 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
4174                             params->ap_max_inactivity);
4175         }
4176
4177         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4178         if (ret) {
4179                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
4180                            ret, strerror(-ret));
4181         } else {
4182                 bss->beacon_set = 1;
4183                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
4184                                 params->short_slot_time, params->ht_opmode,
4185                                 params->isolate, params->basic_rates);
4186                 if (beacon_set && params->freq &&
4187                     params->freq->bandwidth != bss->bandwidth) {
4188                         wpa_printf(MSG_DEBUG,
4189                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
4190                                    bss->ifname, bss->bandwidth,
4191                                    params->freq->bandwidth);
4192                         ret = nl80211_set_channel(bss, params->freq, 1);
4193                         if (ret) {
4194                                 wpa_printf(MSG_DEBUG,
4195                                            "nl80211: Frequency set failed: %d (%s)",
4196                                            ret, strerror(-ret));
4197                         } else {
4198                                 wpa_printf(MSG_DEBUG,
4199                                            "nl80211: Frequency set succeeded for ht2040 coex");
4200                                 bss->bandwidth = params->freq->bandwidth;
4201                         }
4202                 } else if (!beacon_set) {
4203                         /*
4204                          * cfg80211 updates the driver on frequence change in AP
4205                          * mode only at the point when beaconing is started, so
4206                          * set the initial value here.
4207                          */
4208                         bss->bandwidth = params->freq->bandwidth;
4209                 }
4210         }
4211         return ret;
4212  nla_put_failure:
4213         nlmsg_free(msg);
4214         return -ENOBUFS;
4215 }
4216
4217
4218 static int nl80211_put_freq_params(struct nl_msg *msg,
4219                                    struct hostapd_freq_params *freq)
4220 {
4221         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
4222         if (freq->vht_enabled) {
4223                 switch (freq->bandwidth) {
4224                 case 20:
4225                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4226                                     NL80211_CHAN_WIDTH_20);
4227                         break;
4228                 case 40:
4229                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4230                                     NL80211_CHAN_WIDTH_40);
4231                         break;
4232                 case 80:
4233                         if (freq->center_freq2)
4234                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4235                                             NL80211_CHAN_WIDTH_80P80);
4236                         else
4237                                 NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4238                                             NL80211_CHAN_WIDTH_80);
4239                         break;
4240                 case 160:
4241                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
4242                                     NL80211_CHAN_WIDTH_160);
4243                         break;
4244                 default:
4245                         return -EINVAL;
4246                 }
4247                 NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1, freq->center_freq1);
4248                 if (freq->center_freq2)
4249                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ2,
4250                                     freq->center_freq2);
4251         } else if (freq->ht_enabled) {
4252                 switch (freq->sec_channel_offset) {
4253                 case -1:
4254                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4255                                     NL80211_CHAN_HT40MINUS);
4256                         break;
4257                 case 1:
4258                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4259                                     NL80211_CHAN_HT40PLUS);
4260                         break;
4261                 default:
4262                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
4263                                     NL80211_CHAN_HT20);
4264                         break;
4265                 }
4266         }
4267         return 0;
4268
4269 nla_put_failure:
4270         return -ENOBUFS;
4271 }
4272
4273
4274 static int nl80211_set_channel(struct i802_bss *bss,
4275                                struct hostapd_freq_params *freq, int set_chan)
4276 {
4277         struct wpa_driver_nl80211_data *drv = bss->drv;
4278         struct nl_msg *msg;
4279         int ret;
4280
4281         wpa_printf(MSG_DEBUG,
4282                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
4283                    freq->freq, freq->ht_enabled, freq->vht_enabled,
4284                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
4285         msg = nlmsg_alloc();
4286         if (!msg)
4287                 return -1;
4288
4289         nl80211_cmd(drv, msg, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
4290                     NL80211_CMD_SET_WIPHY);
4291
4292         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4293         if (nl80211_put_freq_params(msg, freq) < 0)
4294                 goto nla_put_failure;
4295
4296         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4297         msg = NULL;
4298         if (ret == 0) {
4299                 bss->freq = freq->freq;
4300                 return 0;
4301         }
4302         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
4303                    "%d (%s)", freq->freq, ret, strerror(-ret));
4304 nla_put_failure:
4305         nlmsg_free(msg);
4306         return -1;
4307 }
4308
4309
4310 static u32 sta_flags_nl80211(int flags)
4311 {
4312         u32 f = 0;
4313
4314         if (flags & WPA_STA_AUTHORIZED)
4315                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
4316         if (flags & WPA_STA_WMM)
4317                 f |= BIT(NL80211_STA_FLAG_WME);
4318         if (flags & WPA_STA_SHORT_PREAMBLE)
4319                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
4320         if (flags & WPA_STA_MFP)
4321                 f |= BIT(NL80211_STA_FLAG_MFP);
4322         if (flags & WPA_STA_TDLS_PEER)
4323                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
4324         if (flags & WPA_STA_AUTHENTICATED)
4325                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4326
4327         return f;
4328 }
4329
4330
4331 #ifdef CONFIG_MESH
4332 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
4333 {
4334         switch (state) {
4335         case PLINK_LISTEN:
4336                 return NL80211_PLINK_LISTEN;
4337         case PLINK_OPEN_SENT:
4338                 return NL80211_PLINK_OPN_SNT;
4339         case PLINK_OPEN_RCVD:
4340                 return NL80211_PLINK_OPN_RCVD;
4341         case PLINK_CNF_RCVD:
4342                 return NL80211_PLINK_CNF_RCVD;
4343         case PLINK_ESTAB:
4344                 return NL80211_PLINK_ESTAB;
4345         case PLINK_HOLDING:
4346                 return NL80211_PLINK_HOLDING;
4347         case PLINK_BLOCKED:
4348                 return NL80211_PLINK_BLOCKED;
4349         default:
4350                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
4351                            state);
4352         }
4353         return -1;
4354 }
4355 #endif /* CONFIG_MESH */
4356
4357
4358 static int wpa_driver_nl80211_sta_add(void *priv,
4359                                       struct hostapd_sta_add_params *params)
4360 {
4361         struct i802_bss *bss = priv;
4362         struct wpa_driver_nl80211_data *drv = bss->drv;
4363         struct nl_msg *msg;
4364         struct nl80211_sta_flag_update upd;
4365         int ret = -ENOBUFS;
4366
4367         if ((params->flags & WPA_STA_TDLS_PEER) &&
4368             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
4369                 return -EOPNOTSUPP;
4370
4371         msg = nlmsg_alloc();
4372         if (!msg)
4373                 return -ENOMEM;
4374
4375         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
4376                    params->set ? "Set" : "Add", MAC2STR(params->addr));
4377         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
4378                     NL80211_CMD_NEW_STATION);
4379
4380         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4381         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
4382
4383         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
4384                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
4385                         params->supp_rates_len, params->supp_rates);
4386                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
4387                             params->supp_rates, params->supp_rates_len);
4388         }
4389         if (!params->set) {
4390                 if (params->aid) {
4391                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
4392                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
4393                 } else {
4394                         /*
4395                          * cfg80211 validates that AID is non-zero, so we have
4396                          * to make this a non-zero value for the TDLS case where
4397                          * a dummy STA entry is used for now.
4398                          */
4399                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
4400                         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, 1);
4401                 }
4402                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
4403                            params->listen_interval);
4404                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
4405                             params->listen_interval);
4406         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
4407                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
4408                 NLA_PUT_U16(msg, NL80211_ATTR_PEER_AID, params->aid);
4409         }
4410         if (params->ht_capabilities) {
4411                 wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
4412                             (u8 *) params->ht_capabilities,
4413                             sizeof(*params->ht_capabilities));
4414                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
4415                         sizeof(*params->ht_capabilities),
4416                         params->ht_capabilities);
4417         }
4418
4419         if (params->vht_capabilities) {
4420                 wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
4421                             (u8 *) params->vht_capabilities,
4422                             sizeof(*params->vht_capabilities));
4423                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY,
4424                         sizeof(*params->vht_capabilities),
4425                         params->vht_capabilities);
4426         }
4427
4428         if (params->vht_opmode_enabled) {
4429                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
4430                 NLA_PUT_U8(msg, NL80211_ATTR_OPMODE_NOTIF,
4431                            params->vht_opmode);
4432         }
4433
4434         wpa_printf(MSG_DEBUG, "  * capability=0x%x", params->capability);
4435         NLA_PUT_U16(msg, NL80211_ATTR_STA_CAPABILITY, params->capability);
4436
4437         if (params->ext_capab) {
4438                 wpa_hexdump(MSG_DEBUG, "  * ext_capab",
4439                             params->ext_capab, params->ext_capab_len);
4440                 NLA_PUT(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
4441                         params->ext_capab_len, params->ext_capab);
4442         }
4443
4444         if (params->supp_channels) {
4445                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
4446                             params->supp_channels, params->supp_channels_len);
4447                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4448                         params->supp_channels_len, params->supp_channels);
4449         }
4450
4451         if (params->supp_oper_classes) {
4452                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
4453                             params->supp_oper_classes,
4454                             params->supp_oper_classes_len);
4455                 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4456                         params->supp_oper_classes_len,
4457                         params->supp_oper_classes);
4458         }
4459
4460         os_memset(&upd, 0, sizeof(upd));
4461         upd.set = sta_flags_nl80211(params->flags);
4462         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4463         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
4464                    upd.set, upd.mask);
4465         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4466
4467 #ifdef CONFIG_MESH
4468         if (params->plink_state)
4469                 NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_STATE,
4470                            sta_plink_state_nl80211(params->plink_state));
4471 #endif /* CONFIG_MESH */
4472
4473         if (params->flags & WPA_STA_WMM) {
4474                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4475
4476                 if (!wme)
4477                         goto nla_put_failure;
4478
4479                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
4480                 NLA_PUT_U8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4481                                 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
4482                 NLA_PUT_U8(msg, NL80211_STA_WME_MAX_SP,
4483                                 (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4484                                 WMM_QOSINFO_STA_SP_MASK);
4485                 nla_nest_end(msg, wme);
4486         }
4487
4488         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4489         msg = NULL;
4490         if (ret)
4491                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4492                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4493                            strerror(-ret));
4494         if (ret == -EEXIST)
4495                 ret = 0;
4496  nla_put_failure:
4497         nlmsg_free(msg);
4498         return ret;
4499 }
4500
4501
4502 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4503 {
4504 #ifdef CONFIG_LIBNL3_ROUTE
4505         struct wpa_driver_nl80211_data *drv = bss->drv;
4506         struct rtnl_neigh *rn;
4507         struct nl_addr *nl_addr;
4508         int err;
4509
4510         rn = rtnl_neigh_alloc();
4511         if (!rn)
4512                 return;
4513
4514         rtnl_neigh_set_family(rn, AF_BRIDGE);
4515         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4516         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4517         if (!nl_addr) {
4518                 rtnl_neigh_put(rn);
4519                 return;
4520         }
4521         rtnl_neigh_set_lladdr(rn, nl_addr);
4522
4523         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4524         if (err < 0) {
4525                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4526                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4527                            bss->ifindex, nl_geterror(err));
4528         } else {
4529                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4530                            MACSTR, MAC2STR(addr));
4531         }
4532
4533         nl_addr_put(nl_addr);
4534         rtnl_neigh_put(rn);
4535 #endif /* CONFIG_LIBNL3_ROUTE */
4536 }
4537
4538
4539 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4540                                          int deauth, u16 reason_code)
4541 {
4542         struct wpa_driver_nl80211_data *drv = bss->drv;
4543         struct nl_msg *msg;
4544         int ret;
4545
4546         msg = nlmsg_alloc();
4547         if (!msg)
4548                 return -ENOMEM;
4549
4550         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
4551
4552         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4553                     if_nametoindex(bss->ifname));
4554         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4555         if (deauth == 0)
4556                 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4557                            WLAN_FC_STYPE_DISASSOC);
4558         else if (deauth == 1)
4559                 NLA_PUT_U8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4560                            WLAN_FC_STYPE_DEAUTH);
4561         if (reason_code)
4562                 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4563
4564         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4565         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4566                    " --> %d (%s)",
4567                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4568
4569         if (drv->rtnl_sk)
4570                 rtnl_neigh_delete_fdb_entry(bss, addr);
4571
4572         if (ret == -ENOENT)
4573                 return 0;
4574         return ret;
4575  nla_put_failure:
4576         nlmsg_free(msg);
4577         return -ENOBUFS;
4578 }
4579
4580
4581 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4582 {
4583         struct nl_msg *msg;
4584         struct wpa_driver_nl80211_data *drv2;
4585
4586         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4587
4588         /* stop listening for EAPOL on this interface */
4589         dl_list_for_each(drv2, &drv->global->interfaces,
4590                          struct wpa_driver_nl80211_data, list)
4591                 del_ifidx(drv2, ifidx);
4592
4593         msg = nlmsg_alloc();
4594         if (!msg)
4595                 goto nla_put_failure;
4596
4597         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
4598         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
4599
4600         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4601                 return;
4602         msg = NULL;
4603  nla_put_failure:
4604         nlmsg_free(msg);
4605         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4606 }
4607
4608
4609 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4610 {
4611         switch (mode) {
4612         case NL80211_IFTYPE_ADHOC:
4613                 return "ADHOC";
4614         case NL80211_IFTYPE_STATION:
4615                 return "STATION";
4616         case NL80211_IFTYPE_AP:
4617                 return "AP";
4618         case NL80211_IFTYPE_AP_VLAN:
4619                 return "AP_VLAN";
4620         case NL80211_IFTYPE_WDS:
4621                 return "WDS";
4622         case NL80211_IFTYPE_MONITOR:
4623                 return "MONITOR";
4624         case NL80211_IFTYPE_MESH_POINT:
4625                 return "MESH_POINT";
4626         case NL80211_IFTYPE_P2P_CLIENT:
4627                 return "P2P_CLIENT";
4628         case NL80211_IFTYPE_P2P_GO:
4629                 return "P2P_GO";
4630         case NL80211_IFTYPE_P2P_DEVICE:
4631                 return "P2P_DEVICE";
4632         default:
4633                 return "unknown";
4634         }
4635 }
4636
4637
4638 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4639                                      const char *ifname,
4640                                      enum nl80211_iftype iftype,
4641                                      const u8 *addr, int wds,
4642                                      int (*handler)(struct nl_msg *, void *),
4643                                      void *arg)
4644 {
4645         struct nl_msg *msg;
4646         int ifidx;
4647         int ret = -ENOBUFS;
4648
4649         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4650                    iftype, nl80211_iftype_str(iftype));
4651
4652         msg = nlmsg_alloc();
4653         if (!msg)
4654                 return -1;
4655
4656         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
4657         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
4658                 goto nla_put_failure;
4659         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
4660         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
4661
4662         if (iftype == NL80211_IFTYPE_MONITOR) {
4663                 struct nlattr *flags;
4664
4665                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4666                 if (!flags)
4667                         goto nla_put_failure;
4668
4669                 NLA_PUT_FLAG(msg, NL80211_MNTR_FLAG_COOK_FRAMES);
4670
4671                 nla_nest_end(msg, flags);
4672         } else if (wds) {
4673                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
4674         }
4675
4676         /*
4677          * Tell cfg80211 that the interface belongs to the socket that created
4678          * it, and the interface should be deleted when the socket is closed.
4679          */
4680         NLA_PUT_FLAG(msg, NL80211_ATTR_IFACE_SOCKET_OWNER);
4681
4682         ret = send_and_recv_msgs(drv, msg, handler, arg);
4683         msg = NULL;
4684         if (ret) {
4685  nla_put_failure:
4686                 nlmsg_free(msg);
4687                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4688                            ifname, ret, strerror(-ret));
4689                 return ret;
4690         }
4691
4692         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4693                 return 0;
4694
4695         ifidx = if_nametoindex(ifname);
4696         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4697                    ifname, ifidx);
4698
4699         if (ifidx <= 0)
4700                 return -1;
4701
4702         /*
4703          * Some virtual interfaces need to process EAPOL packets and events on
4704          * the parent interface. This is used mainly with hostapd.
4705          */
4706         if (drv->hostapd ||
4707             iftype == NL80211_IFTYPE_AP_VLAN ||
4708             iftype == NL80211_IFTYPE_WDS ||
4709             iftype == NL80211_IFTYPE_MONITOR) {
4710                 /* start listening for EAPOL on this interface */
4711                 add_ifidx(drv, ifidx);
4712         }
4713
4714         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4715             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4716                 nl80211_remove_iface(drv, ifidx);
4717                 return -1;
4718         }
4719
4720         return ifidx;
4721 }
4722
4723
4724 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4725                          const char *ifname, enum nl80211_iftype iftype,
4726                          const u8 *addr, int wds,
4727                          int (*handler)(struct nl_msg *, void *),
4728                          void *arg, int use_existing)
4729 {
4730         int ret;
4731
4732         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4733                                         arg);
4734
4735         /* if error occurred and interface exists already */
4736         if (ret == -ENFILE && if_nametoindex(ifname)) {
4737                 if (use_existing) {
4738                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4739                                    ifname);
4740                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4741                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4742                                                addr) < 0 &&
4743                             (linux_set_iface_flags(drv->global->ioctl_sock,
4744                                                    ifname, 0) < 0 ||
4745                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4746                                                 addr) < 0 ||
4747                              linux_set_iface_flags(drv->global->ioctl_sock,
4748                                                    ifname, 1) < 0))
4749                                         return -1;
4750                         return -ENFILE;
4751                 }
4752                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4753
4754                 /* Try to remove the interface that was already there. */
4755                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4756
4757                 /* Try to create the interface again */
4758                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4759                                                 wds, handler, arg);
4760         }
4761
4762         if (ret >= 0 && is_p2p_net_interface(iftype))
4763                 nl80211_disable_11b_rates(drv, ret, 1);
4764
4765         return ret;
4766 }
4767
4768
4769 static int nl80211_setup_ap(struct i802_bss *bss)
4770 {
4771         struct wpa_driver_nl80211_data *drv = bss->drv;
4772
4773         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4774                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4775
4776         /*
4777          * Disable Probe Request reporting unless we need it in this way for
4778          * devices that include the AP SME, in the other case (unless using
4779          * monitor iface) we'll get it through the nl_mgmt socket instead.
4780          */
4781         if (!drv->device_ap_sme)
4782                 wpa_driver_nl80211_probe_req_report(bss, 0);
4783
4784         if (!drv->device_ap_sme && !drv->use_monitor)
4785                 if (nl80211_mgmt_subscribe_ap(bss))
4786                         return -1;
4787
4788         if (drv->device_ap_sme && !drv->use_monitor)
4789                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4790                         return -1;
4791
4792         if (!drv->device_ap_sme && drv->use_monitor &&
4793             nl80211_create_monitor_interface(drv) &&
4794             !drv->device_ap_sme)
4795                 return -1;
4796
4797         if (drv->device_ap_sme &&
4798             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4799                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4800                            "Probe Request frame reporting in AP mode");
4801                 /* Try to survive without this */
4802         }
4803
4804         return 0;
4805 }
4806
4807
4808 static void nl80211_teardown_ap(struct i802_bss *bss)
4809 {
4810         struct wpa_driver_nl80211_data *drv = bss->drv;
4811
4812         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4813                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4814         if (drv->device_ap_sme) {
4815                 wpa_driver_nl80211_probe_req_report(bss, 0);
4816                 if (!drv->use_monitor)
4817                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4818         } else if (drv->use_monitor)
4819                 nl80211_remove_monitor_interface(drv);
4820         else
4821                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4822
4823         bss->beacon_set = 0;
4824 }
4825
4826
4827 static int nl80211_send_eapol_data(struct i802_bss *bss,
4828                                    const u8 *addr, const u8 *data,
4829                                    size_t data_len)
4830 {
4831         struct sockaddr_ll ll;
4832         int ret;
4833
4834         if (bss->drv->eapol_tx_sock < 0) {
4835                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4836                 return -1;
4837         }
4838
4839         os_memset(&ll, 0, sizeof(ll));
4840         ll.sll_family = AF_PACKET;
4841         ll.sll_ifindex = bss->ifindex;
4842         ll.sll_protocol = htons(ETH_P_PAE);
4843         ll.sll_halen = ETH_ALEN;
4844         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4845         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4846                      (struct sockaddr *) &ll, sizeof(ll));
4847         if (ret < 0)
4848                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4849                            strerror(errno));
4850
4851         return ret;
4852 }
4853
4854
4855 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4856
4857 static int wpa_driver_nl80211_hapd_send_eapol(
4858         void *priv, const u8 *addr, const u8 *data,
4859         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4860 {
4861         struct i802_bss *bss = priv;
4862         struct wpa_driver_nl80211_data *drv = bss->drv;
4863         struct ieee80211_hdr *hdr;
4864         size_t len;
4865         u8 *pos;
4866         int res;
4867         int qos = flags & WPA_STA_WMM;
4868
4869         if (drv->device_ap_sme || !drv->use_monitor)
4870                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4871
4872         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4873                 data_len;
4874         hdr = os_zalloc(len);
4875         if (hdr == NULL) {
4876                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4877                            (unsigned long) len);
4878                 return -1;
4879         }
4880
4881         hdr->frame_control =
4882                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4883         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4884         if (encrypt)
4885                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4886         if (qos) {
4887                 hdr->frame_control |=
4888                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4889         }
4890
4891         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4892         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4893         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4894         pos = (u8 *) (hdr + 1);
4895
4896         if (qos) {
4897                 /* Set highest priority in QoS header */
4898                 pos[0] = 7;
4899                 pos[1] = 0;
4900                 pos += 2;
4901         }
4902
4903         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4904         pos += sizeof(rfc1042_header);
4905         WPA_PUT_BE16(pos, ETH_P_PAE);
4906         pos += 2;
4907         memcpy(pos, data, data_len);
4908
4909         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4910                                             0, 0, 0, 0);
4911         if (res < 0) {
4912                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4913                            "failed: %d (%s)",
4914                            (unsigned long) len, errno, strerror(errno));
4915         }
4916         os_free(hdr);
4917
4918         return res;
4919 }
4920
4921
4922 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4923                                             int total_flags,
4924                                             int flags_or, int flags_and)
4925 {
4926         struct i802_bss *bss = priv;
4927         struct wpa_driver_nl80211_data *drv = bss->drv;
4928         struct nl_msg *msg;
4929         struct nlattr *flags;
4930         struct nl80211_sta_flag_update upd;
4931
4932         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4933                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4934                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4935                    !!(total_flags & WPA_STA_AUTHORIZED));
4936
4937         msg = nlmsg_alloc();
4938         if (!msg)
4939                 return -ENOMEM;
4940
4941         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
4942
4943         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4944                     if_nametoindex(bss->ifname));
4945         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4946
4947         /*
4948          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4949          * can be removed eventually.
4950          */
4951         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4952         if (!flags)
4953                 goto nla_put_failure;
4954         if (total_flags & WPA_STA_AUTHORIZED)
4955                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_AUTHORIZED);
4956
4957         if (total_flags & WPA_STA_WMM)
4958                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_WME);
4959
4960         if (total_flags & WPA_STA_SHORT_PREAMBLE)
4961                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_SHORT_PREAMBLE);
4962
4963         if (total_flags & WPA_STA_MFP)
4964                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_MFP);
4965
4966         if (total_flags & WPA_STA_TDLS_PEER)
4967                 NLA_PUT_FLAG(msg, NL80211_STA_FLAG_TDLS_PEER);
4968
4969         nla_nest_end(msg, flags);
4970
4971         os_memset(&upd, 0, sizeof(upd));
4972         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4973         upd.set = sta_flags_nl80211(flags_or);
4974         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4975
4976         return send_and_recv_msgs(drv, msg, NULL, NULL);
4977  nla_put_failure:
4978         nlmsg_free(msg);
4979         return -ENOBUFS;
4980 }
4981
4982
4983 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4984                                  struct wpa_driver_associate_params *params)
4985 {
4986         enum nl80211_iftype nlmode, old_mode;
4987
4988         if (params->p2p) {
4989                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4990                            "group (GO)");
4991                 nlmode = NL80211_IFTYPE_P2P_GO;
4992         } else
4993                 nlmode = NL80211_IFTYPE_AP;
4994
4995         old_mode = drv->nlmode;
4996         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4997                 nl80211_remove_monitor_interface(drv);
4998                 return -1;
4999         }
5000
5001         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
5002                 if (old_mode != nlmode)
5003                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
5004                 nl80211_remove_monitor_interface(drv);
5005                 return -1;
5006         }
5007
5008         return 0;
5009 }
5010
5011
5012 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
5013 {
5014         struct nl_msg *msg;
5015         int ret = -1;
5016
5017         msg = nlmsg_alloc();
5018         if (!msg)
5019                 return -1;
5020
5021         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
5022         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5023         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5024         msg = NULL;
5025         if (ret) {
5026                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
5027                            "(%s)", ret, strerror(-ret));
5028                 goto nla_put_failure;
5029         }
5030
5031         ret = 0;
5032         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
5033
5034 nla_put_failure:
5035         if (wpa_driver_nl80211_set_mode(drv->first_bss,
5036                                         NL80211_IFTYPE_STATION)) {
5037                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5038                            "station mode");
5039         }
5040
5041         nlmsg_free(msg);
5042         return ret;
5043 }
5044
5045
5046 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
5047                                    struct wpa_driver_associate_params *params)
5048 {
5049         struct nl_msg *msg;
5050         int ret = -1;
5051         int count = 0;
5052
5053         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
5054
5055         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
5056                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
5057                            "IBSS mode");
5058                 return -1;
5059         }
5060
5061 retry:
5062         msg = nlmsg_alloc();
5063         if (!msg)
5064                 return -1;
5065
5066         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
5067         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5068
5069         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
5070                 goto nla_put_failure;
5071
5072         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5073                           params->ssid, params->ssid_len);
5074         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5075                 params->ssid);
5076         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5077         drv->ssid_len = params->ssid_len;
5078
5079         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5080         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", params->freq.ht_enabled);
5081         wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
5082                    params->freq.sec_channel_offset);
5083         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", params->freq.vht_enabled);
5084         wpa_printf(MSG_DEBUG, "  * center_freq1=%d", params->freq.center_freq1);
5085         wpa_printf(MSG_DEBUG, "  * center_freq2=%d", params->freq.center_freq2);
5086         wpa_printf(MSG_DEBUG, "  * bandwidth=%d", params->freq.bandwidth);
5087         if (nl80211_put_freq_params(msg, &params->freq) < 0)
5088                 goto nla_put_failure;
5089
5090         if (params->beacon_int > 0) {
5091                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", params->beacon_int);
5092                 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL,
5093                             params->beacon_int);
5094         }
5095
5096         ret = nl80211_set_conn_keys(params, msg);
5097         if (ret)
5098                 goto nla_put_failure;
5099
5100         if (params->bssid && params->fixed_bssid) {
5101                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
5102                            MAC2STR(params->bssid));
5103                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5104         }
5105
5106         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5107             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5108             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5109             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
5110                 wpa_printf(MSG_DEBUG, "  * control port");
5111                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5112         }
5113
5114         if (params->wpa_ie) {
5115                 wpa_hexdump(MSG_DEBUG,
5116                             "  * Extra IEs for Beacon/Probe Response frames",
5117                             params->wpa_ie, params->wpa_ie_len);
5118                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5119                         params->wpa_ie);
5120         }
5121
5122         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5123         msg = NULL;
5124         if (ret) {
5125                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
5126                            ret, strerror(-ret));
5127                 count++;
5128                 if (ret == -EALREADY && count == 1) {
5129                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
5130                                    "forced leave");
5131                         nl80211_leave_ibss(drv);
5132                         nlmsg_free(msg);
5133                         goto retry;
5134                 }
5135
5136                 goto nla_put_failure;
5137         }
5138         ret = 0;
5139         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
5140
5141 nla_put_failure:
5142         nlmsg_free(msg);
5143         return ret;
5144 }
5145
5146
5147 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
5148                                   struct wpa_driver_associate_params *params,
5149                                   struct nl_msg *msg)
5150 {
5151         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5152
5153         if (params->bssid) {
5154                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
5155                            MAC2STR(params->bssid));
5156                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
5157         }
5158
5159         if (params->bssid_hint) {
5160                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
5161                            MAC2STR(params->bssid_hint));
5162                 NLA_PUT(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
5163                         params->bssid_hint);
5164         }
5165
5166         if (params->freq.freq) {
5167                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
5168                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq.freq);
5169                 drv->assoc_freq = params->freq.freq;
5170         } else
5171                 drv->assoc_freq = 0;
5172
5173         if (params->freq_hint) {
5174                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
5175                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
5176                             params->freq_hint);
5177         }
5178
5179         if (params->bg_scan_period >= 0) {
5180                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
5181                            params->bg_scan_period);
5182                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
5183                             params->bg_scan_period);
5184         }
5185
5186         if (params->ssid) {
5187                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
5188                                   params->ssid, params->ssid_len);
5189                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5190                         params->ssid);
5191                 if (params->ssid_len > sizeof(drv->ssid))
5192                         goto nla_put_failure;
5193                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
5194                 drv->ssid_len = params->ssid_len;
5195         }
5196
5197         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
5198         if (params->wpa_ie)
5199                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
5200                         params->wpa_ie);
5201
5202         if (params->wpa_proto) {
5203                 enum nl80211_wpa_versions ver = 0;
5204
5205                 if (params->wpa_proto & WPA_PROTO_WPA)
5206                         ver |= NL80211_WPA_VERSION_1;
5207                 if (params->wpa_proto & WPA_PROTO_RSN)
5208                         ver |= NL80211_WPA_VERSION_2;
5209
5210                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
5211                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5212         }
5213
5214         if (params->pairwise_suite != WPA_CIPHER_NONE) {
5215                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
5216                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
5217                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
5218         }
5219
5220         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
5221             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
5222                 /*
5223                  * This is likely to work even though many drivers do not
5224                  * advertise support for operations without GTK.
5225                  */
5226                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
5227         } else if (params->group_suite != WPA_CIPHER_NONE) {
5228                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
5229                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
5230                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
5231         }
5232
5233         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
5234             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5235             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
5236             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
5237             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
5238             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
5239             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
5240             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
5241                 int mgmt = WLAN_AKM_SUITE_PSK;
5242
5243                 switch (params->key_mgmt_suite) {
5244                 case WPA_KEY_MGMT_CCKM:
5245                         mgmt = WLAN_AKM_SUITE_CCKM;
5246                         break;
5247                 case WPA_KEY_MGMT_IEEE8021X:
5248                         mgmt = WLAN_AKM_SUITE_8021X;
5249                         break;
5250                 case WPA_KEY_MGMT_FT_IEEE8021X:
5251                         mgmt = WLAN_AKM_SUITE_FT_8021X;
5252                         break;
5253                 case WPA_KEY_MGMT_FT_PSK:
5254                         mgmt = WLAN_AKM_SUITE_FT_PSK;
5255                         break;
5256                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
5257                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
5258                         break;
5259                 case WPA_KEY_MGMT_PSK_SHA256:
5260                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
5261                         break;
5262                 case WPA_KEY_MGMT_OSEN:
5263                         mgmt = WLAN_AKM_SUITE_OSEN;
5264                         break;
5265                 case WPA_KEY_MGMT_PSK:
5266                 default:
5267                         mgmt = WLAN_AKM_SUITE_PSK;
5268                         break;
5269                 }
5270                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
5271                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
5272         }
5273
5274         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
5275
5276         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
5277                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
5278
5279         if (params->disable_ht)
5280                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
5281
5282         if (params->htcaps && params->htcaps_mask) {
5283                 int sz = sizeof(struct ieee80211_ht_capabilities);
5284                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
5285                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
5286                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
5287                             params->htcaps_mask, sz);
5288                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
5289                         params->htcaps_mask);
5290         }
5291
5292 #ifdef CONFIG_VHT_OVERRIDES
5293         if (params->disable_vht) {
5294                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
5295                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_VHT);
5296         }
5297
5298         if (params->vhtcaps && params->vhtcaps_mask) {
5299                 int sz = sizeof(struct ieee80211_vht_capabilities);
5300                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
5301                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY, sz, params->vhtcaps);
5302                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
5303                             params->vhtcaps_mask, sz);
5304                 NLA_PUT(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
5305                         params->vhtcaps_mask);
5306         }
5307 #endif /* CONFIG_VHT_OVERRIDES */
5308
5309         if (params->p2p)
5310                 wpa_printf(MSG_DEBUG, "  * P2P group");
5311
5312         return 0;
5313 nla_put_failure:
5314         return -1;
5315 }
5316
5317
5318 static int wpa_driver_nl80211_try_connect(
5319         struct wpa_driver_nl80211_data *drv,
5320         struct wpa_driver_associate_params *params)
5321 {
5322         struct nl_msg *msg;
5323         enum nl80211_auth_type type;
5324         int ret;
5325         int algs;
5326
5327         if (params->req_key_mgmt_offload && params->psk &&
5328             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
5329              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
5330              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
5331                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
5332                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
5333                 if (ret)
5334                         return ret;
5335         }
5336
5337         msg = nlmsg_alloc();
5338         if (!msg)
5339                 return -1;
5340
5341         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
5342         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
5343
5344         ret = nl80211_connect_common(drv, params, msg);
5345         if (ret)
5346                 goto nla_put_failure;
5347
5348         algs = 0;
5349         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5350                 algs++;
5351         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5352                 algs++;
5353         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5354                 algs++;
5355         if (algs > 1) {
5356                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
5357                            "selection");
5358                 goto skip_auth_type;
5359         }
5360
5361         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
5362                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
5363         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
5364                 type = NL80211_AUTHTYPE_SHARED_KEY;
5365         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
5366                 type = NL80211_AUTHTYPE_NETWORK_EAP;
5367         else if (params->auth_alg & WPA_AUTH_ALG_FT)
5368                 type = NL80211_AUTHTYPE_FT;
5369         else
5370                 goto nla_put_failure;
5371
5372         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5373         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
5374
5375 skip_auth_type:
5376         ret = nl80211_set_conn_keys(params, msg);
5377         if (ret)
5378                 goto nla_put_failure;
5379
5380         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5381         msg = NULL;
5382         if (ret) {
5383                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5384                            "(%s)", ret, strerror(-ret));
5385                 goto nla_put_failure;
5386         }
5387         ret = 0;
5388         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
5389
5390 nla_put_failure:
5391         nlmsg_free(msg);
5392         return ret;
5393
5394 }
5395
5396
5397 static int wpa_driver_nl80211_connect(
5398         struct wpa_driver_nl80211_data *drv,
5399         struct wpa_driver_associate_params *params)
5400 {
5401         int ret = wpa_driver_nl80211_try_connect(drv, params);
5402         if (ret == -EALREADY) {
5403                 /*
5404                  * cfg80211 does not currently accept new connections if
5405                  * we are already connected. As a workaround, force
5406                  * disconnection and try again.
5407                  */
5408                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5409                            "disconnecting before reassociation "
5410                            "attempt");
5411                 if (wpa_driver_nl80211_disconnect(
5412                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5413                         return -1;
5414                 ret = wpa_driver_nl80211_try_connect(drv, params);
5415         }
5416         return ret;
5417 }
5418
5419
5420 static int wpa_driver_nl80211_associate(
5421         void *priv, struct wpa_driver_associate_params *params)
5422 {
5423         struct i802_bss *bss = priv;
5424         struct wpa_driver_nl80211_data *drv = bss->drv;
5425         int ret;
5426         struct nl_msg *msg;
5427
5428         if (params->mode == IEEE80211_MODE_AP)
5429                 return wpa_driver_nl80211_ap(drv, params);
5430
5431         if (params->mode == IEEE80211_MODE_IBSS)
5432                 return wpa_driver_nl80211_ibss(drv, params);
5433
5434         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5435                 enum nl80211_iftype nlmode = params->p2p ?
5436                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5437
5438                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5439                         return -1;
5440                 return wpa_driver_nl80211_connect(drv, params);
5441         }
5442
5443         nl80211_mark_disconnected(drv);
5444
5445         msg = nlmsg_alloc();
5446         if (!msg)
5447                 return -1;
5448
5449         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5450                    drv->ifindex);
5451         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
5452
5453         ret = nl80211_connect_common(drv, params, msg);
5454         if (ret)
5455                 goto nla_put_failure;
5456
5457         if (params->prev_bssid) {
5458                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
5459                            MAC2STR(params->prev_bssid));
5460                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
5461                         params->prev_bssid);
5462         }
5463
5464         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5465         msg = NULL;
5466         if (ret) {
5467                 wpa_dbg(drv->ctx, MSG_DEBUG,
5468                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
5469                         ret, strerror(-ret));
5470                 nl80211_dump_scan(drv);
5471                 goto nla_put_failure;
5472         }
5473         ret = 0;
5474         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
5475                    "successfully");
5476
5477 nla_put_failure:
5478         nlmsg_free(msg);
5479         return ret;
5480 }
5481
5482
5483 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5484                             int ifindex, enum nl80211_iftype mode)
5485 {
5486         struct nl_msg *msg;
5487         int ret = -ENOBUFS;
5488
5489         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5490                    ifindex, mode, nl80211_iftype_str(mode));
5491
5492         msg = nlmsg_alloc();
5493         if (!msg)
5494                 return -ENOMEM;
5495
5496         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
5497         if (nl80211_set_iface_id(msg, drv->first_bss) < 0)
5498                 goto nla_put_failure;
5499         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
5500
5501         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5502         msg = NULL;
5503         if (!ret)
5504                 return 0;
5505 nla_put_failure:
5506         nlmsg_free(msg);
5507         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5508                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5509         return ret;
5510 }
5511
5512
5513 static int wpa_driver_nl80211_set_mode_impl(
5514                 struct i802_bss *bss,
5515                 enum nl80211_iftype nlmode,
5516                 struct hostapd_freq_params *desired_freq_params)
5517 {
5518         struct wpa_driver_nl80211_data *drv = bss->drv;
5519         int ret = -1;
5520         int i;
5521         int was_ap = is_ap_interface(drv->nlmode);
5522         int res;
5523         int mode_switch_res;
5524
5525         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5526         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5527                 mode_switch_res = 0;
5528
5529         if (mode_switch_res == 0) {
5530                 drv->nlmode = nlmode;
5531                 ret = 0;
5532                 goto done;
5533         }
5534
5535         if (mode_switch_res == -ENODEV)
5536                 return -1;
5537
5538         if (nlmode == drv->nlmode) {
5539                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5540                            "requested mode - ignore error");
5541                 ret = 0;
5542                 goto done; /* Already in the requested mode */
5543         }
5544
5545         /* mac80211 doesn't allow mode changes while the device is up, so
5546          * take the device down, try to set the mode again, and bring the
5547          * device back up.
5548          */
5549         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5550                    "interface down");
5551         for (i = 0; i < 10; i++) {
5552                 res = i802_set_iface_flags(bss, 0);
5553                 if (res == -EACCES || res == -ENODEV)
5554                         break;
5555                 if (res != 0) {
5556                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5557                                    "interface down");
5558                         os_sleep(0, 100000);
5559                         continue;
5560                 }
5561
5562                 /*
5563                  * Setting the mode will fail for some drivers if the phy is
5564                  * on a frequency that the mode is disallowed in.
5565                  */
5566                 if (desired_freq_params) {
5567                         res = i802_set_freq(bss, desired_freq_params);
5568                         if (res) {
5569                                 wpa_printf(MSG_DEBUG,
5570                                            "nl80211: Failed to set frequency on interface");
5571                         }
5572                 }
5573
5574                 /* Try to set the mode again while the interface is down */
5575                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5576                 if (mode_switch_res == -EBUSY) {
5577                         wpa_printf(MSG_DEBUG,
5578                                    "nl80211: Delaying mode set while interface going down");
5579                         os_sleep(0, 100000);
5580                         continue;
5581                 }
5582                 ret = mode_switch_res;
5583                 break;
5584         }
5585
5586         if (!ret) {
5587                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5588                            "interface is down");
5589                 drv->nlmode = nlmode;
5590                 drv->ignore_if_down_event = 1;
5591         }
5592
5593         /* Bring the interface back up */
5594         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5595         if (res != 0) {
5596                 wpa_printf(MSG_DEBUG,
5597                            "nl80211: Failed to set interface up after switching mode");
5598                 ret = -1;
5599         }
5600
5601 done:
5602         if (ret) {
5603                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5604                            "from %d failed", nlmode, drv->nlmode);
5605                 return ret;
5606         }
5607
5608         if (is_p2p_net_interface(nlmode))
5609                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5610         else if (drv->disabled_11b_rates)
5611                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5612
5613         if (is_ap_interface(nlmode)) {
5614                 nl80211_mgmt_unsubscribe(bss, "start AP");
5615                 /* Setup additional AP mode functionality if needed */
5616                 if (nl80211_setup_ap(bss))
5617                         return -1;
5618         } else if (was_ap) {
5619                 /* Remove additional AP mode functionality */
5620                 nl80211_teardown_ap(bss);
5621         } else {
5622                 nl80211_mgmt_unsubscribe(bss, "mode change");
5623         }
5624
5625         if (is_mesh_interface(nlmode) &&
5626             nl80211_mgmt_subscribe_mesh(bss))
5627                 return -1;
5628
5629         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5630             !is_mesh_interface(nlmode) &&
5631             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5632                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5633                            "frame processing - ignore for now");
5634
5635         return 0;
5636 }
5637
5638
5639 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5640                                 enum nl80211_iftype nlmode)
5641 {
5642         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5643 }
5644
5645
5646 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5647                                             struct hostapd_freq_params *freq)
5648 {
5649         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5650                                                 freq);
5651 }
5652
5653
5654 static int wpa_driver_nl80211_get_capa(void *priv,
5655                                        struct wpa_driver_capa *capa)
5656 {
5657         struct i802_bss *bss = priv;
5658         struct wpa_driver_nl80211_data *drv = bss->drv;
5659
5660         if (!drv->has_capability)
5661                 return -1;
5662         os_memcpy(capa, &drv->capa, sizeof(*capa));
5663         if (drv->extended_capa && drv->extended_capa_mask) {
5664                 capa->extended_capa = drv->extended_capa;
5665                 capa->extended_capa_mask = drv->extended_capa_mask;
5666                 capa->extended_capa_len = drv->extended_capa_len;
5667         }
5668
5669         return 0;
5670 }
5671
5672
5673 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5674 {
5675         struct i802_bss *bss = priv;
5676         struct wpa_driver_nl80211_data *drv = bss->drv;
5677
5678         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5679                    bss->ifname, drv->operstate, state,
5680                    state ? "UP" : "DORMANT");
5681         drv->operstate = state;
5682         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5683                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5684 }
5685
5686
5687 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5688 {
5689         struct i802_bss *bss = priv;
5690         struct wpa_driver_nl80211_data *drv = bss->drv;
5691         struct nl_msg *msg;
5692         struct nl80211_sta_flag_update upd;
5693         int ret = -ENOBUFS;
5694
5695         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5696                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5697                 return 0;
5698         }
5699
5700         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5701                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5702
5703         msg = nlmsg_alloc();
5704         if (!msg)
5705                 return -ENOMEM;
5706
5707         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
5708
5709         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5710                     if_nametoindex(bss->ifname));
5711         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
5712
5713         os_memset(&upd, 0, sizeof(upd));
5714         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5715         if (authorized)
5716                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5717         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5718
5719         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5720         msg = NULL;
5721         if (!ret)
5722                 return 0;
5723  nla_put_failure:
5724         nlmsg_free(msg);
5725         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5726                    ret, strerror(-ret));
5727         return ret;
5728 }
5729
5730
5731 /* Set kernel driver on given frequency (MHz) */
5732 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5733 {
5734         struct i802_bss *bss = priv;
5735         return nl80211_set_channel(bss, freq, 0);
5736 }
5737
5738
5739 static inline int min_int(int a, int b)
5740 {
5741         if (a < b)
5742                 return a;
5743         return b;
5744 }
5745
5746
5747 static int get_key_handler(struct nl_msg *msg, void *arg)
5748 {
5749         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5750         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5751
5752         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5753                   genlmsg_attrlen(gnlh, 0), NULL);
5754
5755         /*
5756          * TODO: validate the key index and mac address!
5757          * Otherwise, there's a race condition as soon as
5758          * the kernel starts sending key notifications.
5759          */
5760
5761         if (tb[NL80211_ATTR_KEY_SEQ])
5762                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5763                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5764         return NL_SKIP;
5765 }
5766
5767
5768 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5769                            int idx, u8 *seq)
5770 {
5771         struct i802_bss *bss = priv;
5772         struct wpa_driver_nl80211_data *drv = bss->drv;
5773         struct nl_msg *msg;
5774
5775         msg = nlmsg_alloc();
5776         if (!msg)
5777                 return -ENOMEM;
5778
5779         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
5780
5781         if (addr)
5782                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5783         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
5784         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
5785
5786         memset(seq, 0, 6);
5787
5788         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5789  nla_put_failure:
5790         nlmsg_free(msg);
5791         return -ENOBUFS;
5792 }
5793
5794
5795 static int i802_set_rts(void *priv, int rts)
5796 {
5797         struct i802_bss *bss = priv;
5798         struct wpa_driver_nl80211_data *drv = bss->drv;
5799         struct nl_msg *msg;
5800         int ret = -ENOBUFS;
5801         u32 val;
5802
5803         msg = nlmsg_alloc();
5804         if (!msg)
5805                 return -ENOMEM;
5806
5807         if (rts >= 2347)
5808                 val = (u32) -1;
5809         else
5810                 val = rts;
5811
5812         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5813         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5814         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
5815
5816         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5817         msg = NULL;
5818         if (!ret)
5819                 return 0;
5820 nla_put_failure:
5821         nlmsg_free(msg);
5822         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5823                    "%d (%s)", rts, ret, strerror(-ret));
5824         return ret;
5825 }
5826
5827
5828 static int i802_set_frag(void *priv, int frag)
5829 {
5830         struct i802_bss *bss = priv;
5831         struct wpa_driver_nl80211_data *drv = bss->drv;
5832         struct nl_msg *msg;
5833         int ret = -ENOBUFS;
5834         u32 val;
5835
5836         msg = nlmsg_alloc();
5837         if (!msg)
5838                 return -ENOMEM;
5839
5840         if (frag >= 2346)
5841                 val = (u32) -1;
5842         else
5843                 val = frag;
5844
5845         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5846         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5847         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
5848
5849         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5850         msg = NULL;
5851         if (!ret)
5852                 return 0;
5853 nla_put_failure:
5854         nlmsg_free(msg);
5855         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5856                    "%d: %d (%s)", frag, ret, strerror(-ret));
5857         return ret;
5858 }
5859
5860
5861 static int i802_flush(void *priv)
5862 {
5863         struct i802_bss *bss = priv;
5864         struct wpa_driver_nl80211_data *drv = bss->drv;
5865         struct nl_msg *msg;
5866         int res;
5867
5868         msg = nlmsg_alloc();
5869         if (!msg)
5870                 return -1;
5871
5872         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5873                    bss->ifname);
5874         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5875
5876         /*
5877          * XXX: FIX! this needs to flush all VLANs too
5878          */
5879         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5880                     if_nametoindex(bss->ifname));
5881
5882         res = send_and_recv_msgs(drv, msg, NULL, NULL);
5883         if (res) {
5884                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5885                            "(%s)", res, strerror(-res));
5886         }
5887         return res;
5888  nla_put_failure:
5889         nlmsg_free(msg);
5890         return -ENOBUFS;
5891 }
5892
5893
5894 static int get_sta_handler(struct nl_msg *msg, void *arg)
5895 {
5896         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5897         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5898         struct hostap_sta_driver_data *data = arg;
5899         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5900         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5901                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5902                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5903                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5904                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5905                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5906                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5907         };
5908
5909         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5910                   genlmsg_attrlen(gnlh, 0), NULL);
5911
5912         /*
5913          * TODO: validate the interface and mac address!
5914          * Otherwise, there's a race condition as soon as
5915          * the kernel starts sending station notifications.
5916          */
5917
5918         if (!tb[NL80211_ATTR_STA_INFO]) {
5919                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5920                 return NL_SKIP;
5921         }
5922         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5923                              tb[NL80211_ATTR_STA_INFO],
5924                              stats_policy)) {
5925                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5926                 return NL_SKIP;
5927         }
5928
5929         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5930                 data->inactive_msec =
5931                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5932         if (stats[NL80211_STA_INFO_RX_BYTES])
5933                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5934         if (stats[NL80211_STA_INFO_TX_BYTES])
5935                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5936         if (stats[NL80211_STA_INFO_RX_PACKETS])
5937                 data->rx_packets =
5938                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5939         if (stats[NL80211_STA_INFO_TX_PACKETS])
5940                 data->tx_packets =
5941                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5942         if (stats[NL80211_STA_INFO_TX_FAILED])
5943                 data->tx_retry_failed =
5944                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5945
5946         return NL_SKIP;
5947 }
5948
5949 static int i802_read_sta_data(struct i802_bss *bss,
5950                               struct hostap_sta_driver_data *data,
5951                               const u8 *addr)
5952 {
5953         struct wpa_driver_nl80211_data *drv = bss->drv;
5954         struct nl_msg *msg;
5955
5956         os_memset(data, 0, sizeof(*data));
5957         msg = nlmsg_alloc();
5958         if (!msg)
5959                 return -ENOMEM;
5960
5961         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
5962
5963         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5964         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5965
5966         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
5967  nla_put_failure:
5968         nlmsg_free(msg);
5969         return -ENOBUFS;
5970 }
5971
5972
5973 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5974                                     int cw_min, int cw_max, int burst_time)
5975 {
5976         struct i802_bss *bss = priv;
5977         struct wpa_driver_nl80211_data *drv = bss->drv;
5978         struct nl_msg *msg;
5979         struct nlattr *txq, *params;
5980
5981         msg = nlmsg_alloc();
5982         if (!msg)
5983                 return -1;
5984
5985         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5986
5987         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5988
5989         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5990         if (!txq)
5991                 goto nla_put_failure;
5992
5993         /* We are only sending parameters for a single TXQ at a time */
5994         params = nla_nest_start(msg, 1);
5995         if (!params)
5996                 goto nla_put_failure;
5997
5998         switch (queue) {
5999         case 0:
6000                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
6001                 break;
6002         case 1:
6003                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
6004                 break;
6005         case 2:
6006                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
6007                 break;
6008         case 3:
6009                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
6010                 break;
6011         }
6012         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
6013          * 32 usec, so need to convert the value here. */
6014         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
6015         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
6016         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
6017         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
6018
6019         nla_nest_end(msg, params);
6020
6021         nla_nest_end(msg, txq);
6022
6023         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
6024                 return 0;
6025         msg = NULL;
6026  nla_put_failure:
6027         nlmsg_free(msg);
6028         return -1;
6029 }
6030
6031
6032 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
6033                              const char *ifname, int vlan_id)
6034 {
6035         struct wpa_driver_nl80211_data *drv = bss->drv;
6036         struct nl_msg *msg;
6037         int ret = -ENOBUFS;
6038
6039         msg = nlmsg_alloc();
6040         if (!msg)
6041                 return -ENOMEM;
6042
6043         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
6044                    ", ifname=%s[%d], vlan_id=%d)",
6045                    bss->ifname, if_nametoindex(bss->ifname),
6046                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
6047         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6048
6049         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6050                     if_nametoindex(bss->ifname));
6051         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6052         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
6053                     if_nametoindex(ifname));
6054
6055         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6056         msg = NULL;
6057         if (ret < 0) {
6058                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
6059                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
6060                            MAC2STR(addr), ifname, vlan_id, ret,
6061                            strerror(-ret));
6062         }
6063  nla_put_failure:
6064         nlmsg_free(msg);
6065         return ret;
6066 }
6067
6068
6069 static int i802_get_inact_sec(void *priv, const u8 *addr)
6070 {
6071         struct hostap_sta_driver_data data;
6072         int ret;
6073
6074         data.inactive_msec = (unsigned long) -1;
6075         ret = i802_read_sta_data(priv, &data, addr);
6076         if (ret || data.inactive_msec == (unsigned long) -1)
6077                 return -1;
6078         return data.inactive_msec / 1000;
6079 }
6080
6081
6082 static int i802_sta_clear_stats(void *priv, const u8 *addr)
6083 {
6084 #if 0
6085         /* TODO */
6086 #endif
6087         return 0;
6088 }
6089
6090
6091 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
6092                            int reason)
6093 {
6094         struct i802_bss *bss = priv;
6095         struct wpa_driver_nl80211_data *drv = bss->drv;
6096         struct ieee80211_mgmt mgmt;
6097
6098         if (is_mesh_interface(drv->nlmode))
6099                 return -1;
6100
6101         if (drv->device_ap_sme)
6102                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
6103
6104         memset(&mgmt, 0, sizeof(mgmt));
6105         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6106                                           WLAN_FC_STYPE_DEAUTH);
6107         memcpy(mgmt.da, addr, ETH_ALEN);
6108         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6109         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6110         mgmt.u.deauth.reason_code = host_to_le16(reason);
6111         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6112                                             IEEE80211_HDRLEN +
6113                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
6114                                             0);
6115 }
6116
6117
6118 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
6119                              int reason)
6120 {
6121         struct i802_bss *bss = priv;
6122         struct wpa_driver_nl80211_data *drv = bss->drv;
6123         struct ieee80211_mgmt mgmt;
6124
6125         if (is_mesh_interface(drv->nlmode))
6126                 return -1;
6127
6128         if (drv->device_ap_sme)
6129                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
6130
6131         memset(&mgmt, 0, sizeof(mgmt));
6132         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
6133                                           WLAN_FC_STYPE_DISASSOC);
6134         memcpy(mgmt.da, addr, ETH_ALEN);
6135         memcpy(mgmt.sa, own_addr, ETH_ALEN);
6136         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
6137         mgmt.u.disassoc.reason_code = host_to_le16(reason);
6138         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
6139                                             IEEE80211_HDRLEN +
6140                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
6141                                             0);
6142 }
6143
6144
6145 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
6146 {
6147         char buf[200], *pos, *end;
6148         int i, res;
6149
6150         pos = buf;
6151         end = pos + sizeof(buf);
6152
6153         for (i = 0; i < drv->num_if_indices; i++) {
6154                 if (!drv->if_indices[i])
6155                         continue;
6156                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
6157                 if (res < 0 || res >= end - pos)
6158                         break;
6159                 pos += res;
6160         }
6161         *pos = '\0';
6162
6163         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
6164                    drv->num_if_indices, buf);
6165 }
6166
6167
6168 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6169 {
6170         int i;
6171         int *old;
6172
6173         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
6174                    ifidx);
6175         if (have_ifidx(drv, ifidx)) {
6176                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
6177                            ifidx);
6178                 return;
6179         }
6180         for (i = 0; i < drv->num_if_indices; i++) {
6181                 if (drv->if_indices[i] == 0) {
6182                         drv->if_indices[i] = ifidx;
6183                         dump_ifidx(drv);
6184                         return;
6185                 }
6186         }
6187
6188         if (drv->if_indices != drv->default_if_indices)
6189                 old = drv->if_indices;
6190         else
6191                 old = NULL;
6192
6193         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
6194                                            sizeof(int));
6195         if (!drv->if_indices) {
6196                 if (!old)
6197                         drv->if_indices = drv->default_if_indices;
6198                 else
6199                         drv->if_indices = old;
6200                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
6201                            "interfaces");
6202                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
6203                 return;
6204         } else if (!old)
6205                 os_memcpy(drv->if_indices, drv->default_if_indices,
6206                           sizeof(drv->default_if_indices));
6207         drv->if_indices[drv->num_if_indices] = ifidx;
6208         drv->num_if_indices++;
6209         dump_ifidx(drv);
6210 }
6211
6212
6213 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6214 {
6215         int i;
6216
6217         for (i = 0; i < drv->num_if_indices; i++) {
6218                 if (drv->if_indices[i] == ifidx) {
6219                         drv->if_indices[i] = 0;
6220                         break;
6221                 }
6222         }
6223         dump_ifidx(drv);
6224 }
6225
6226
6227 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
6228 {
6229         int i;
6230
6231         for (i = 0; i < drv->num_if_indices; i++)
6232                 if (drv->if_indices[i] == ifidx)
6233                         return 1;
6234
6235         return 0;
6236 }
6237
6238
6239 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
6240                             const char *bridge_ifname, char *ifname_wds)
6241 {
6242         struct i802_bss *bss = priv;
6243         struct wpa_driver_nl80211_data *drv = bss->drv;
6244         char name[IFNAMSIZ + 1];
6245
6246         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
6247         if (ifname_wds)
6248                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
6249
6250         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
6251                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
6252         if (val) {
6253                 if (!if_nametoindex(name)) {
6254                         if (nl80211_create_iface(drv, name,
6255                                                  NL80211_IFTYPE_AP_VLAN,
6256                                                  bss->addr, 1, NULL, NULL, 0) <
6257                             0)
6258                                 return -1;
6259                         if (bridge_ifname &&
6260                             linux_br_add_if(drv->global->ioctl_sock,
6261                                             bridge_ifname, name) < 0)
6262                                 return -1;
6263                 }
6264                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
6265                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
6266                                    "interface %s up", name);
6267                 }
6268                 return i802_set_sta_vlan(priv, addr, name, 0);
6269         } else {
6270                 if (bridge_ifname)
6271                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
6272                                         name);
6273
6274                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
6275                 nl80211_remove_iface(drv, if_nametoindex(name));
6276                 return 0;
6277         }
6278 }
6279
6280
6281 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
6282 {
6283         struct wpa_driver_nl80211_data *drv = eloop_ctx;
6284         struct sockaddr_ll lladdr;
6285         unsigned char buf[3000];
6286         int len;
6287         socklen_t fromlen = sizeof(lladdr);
6288
6289         len = recvfrom(sock, buf, sizeof(buf), 0,
6290                        (struct sockaddr *)&lladdr, &fromlen);
6291         if (len < 0) {
6292                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
6293                            strerror(errno));
6294                 return;
6295         }
6296
6297         if (have_ifidx(drv, lladdr.sll_ifindex))
6298                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
6299 }
6300
6301
6302 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
6303                              struct i802_bss *bss,
6304                              const char *brname, const char *ifname)
6305 {
6306         int br_ifindex;
6307         char in_br[IFNAMSIZ];
6308
6309         os_strlcpy(bss->brname, brname, IFNAMSIZ);
6310         br_ifindex = if_nametoindex(brname);
6311         bss->br_ifindex = br_ifindex;
6312         if (br_ifindex == 0) {
6313                 /*
6314                  * Bridge was configured, but the bridge device does
6315                  * not exist. Try to add it now.
6316                  */
6317                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
6318                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
6319                                    "bridge interface %s: %s",
6320                                    brname, strerror(errno));
6321                         return -1;
6322                 }
6323                 bss->added_bridge = 1;
6324                 add_ifidx(drv, if_nametoindex(brname));
6325         }
6326
6327         if (linux_br_get(in_br, ifname) == 0) {
6328                 if (os_strcmp(in_br, brname) == 0)
6329                         return 0; /* already in the bridge */
6330
6331                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
6332                            "bridge %s", ifname, in_br);
6333                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
6334                     0) {
6335                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
6336                                    "remove interface %s from bridge "
6337                                    "%s: %s",
6338                                    ifname, brname, strerror(errno));
6339                         return -1;
6340                 }
6341         }
6342
6343         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
6344                    ifname, brname);
6345         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
6346                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
6347                            "into bridge %s: %s",
6348                            ifname, brname, strerror(errno));
6349                 return -1;
6350         }
6351         bss->added_if_into_bridge = 1;
6352
6353         return 0;
6354 }
6355
6356
6357 static void *i802_init(struct hostapd_data *hapd,
6358                        struct wpa_init_params *params)
6359 {
6360         struct wpa_driver_nl80211_data *drv;
6361         struct i802_bss *bss;
6362         size_t i;
6363         char brname[IFNAMSIZ];
6364         int ifindex, br_ifindex;
6365         int br_added = 0;
6366
6367         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6368                                           params->global_priv, 1,
6369                                           params->bssid);
6370         if (bss == NULL)
6371                 return NULL;
6372
6373         drv = bss->drv;
6374
6375         if (linux_br_get(brname, params->ifname) == 0) {
6376                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6377                            params->ifname, brname);
6378                 br_ifindex = if_nametoindex(brname);
6379                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
6380         } else {
6381                 brname[0] = '\0';
6382                 br_ifindex = 0;
6383         }
6384         bss->br_ifindex = br_ifindex;
6385
6386         for (i = 0; i < params->num_bridge; i++) {
6387                 if (params->bridge[i]) {
6388                         ifindex = if_nametoindex(params->bridge[i]);
6389                         if (ifindex)
6390                                 add_ifidx(drv, ifindex);
6391                         if (ifindex == br_ifindex)
6392                                 br_added = 1;
6393                 }
6394         }
6395         if (!br_added && br_ifindex &&
6396             (params->num_bridge == 0 || !params->bridge[0]))
6397                 add_ifidx(drv, br_ifindex);
6398
6399         /* start listening for EAPOL on the default AP interface */
6400         add_ifidx(drv, drv->ifindex);
6401
6402         if (params->num_bridge && params->bridge[0] &&
6403             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
6404                 goto failed;
6405
6406 #ifdef CONFIG_LIBNL3_ROUTE
6407         if (bss->added_if_into_bridge) {
6408                 drv->rtnl_sk = nl_socket_alloc();
6409                 if (drv->rtnl_sk == NULL) {
6410                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6411                         goto failed;
6412                 }
6413
6414                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6415                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6416                                    strerror(errno));
6417                         goto failed;
6418                 }
6419         }
6420 #endif /* CONFIG_LIBNL3_ROUTE */
6421
6422         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6423         if (drv->eapol_sock < 0) {
6424                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6425                            strerror(errno));
6426                 goto failed;
6427         }
6428
6429         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6430         {
6431                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6432                 goto failed;
6433         }
6434
6435         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6436                                params->own_addr))
6437                 goto failed;
6438         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6439
6440         memcpy(bss->addr, params->own_addr, ETH_ALEN);
6441
6442         return bss;
6443
6444 failed:
6445         wpa_driver_nl80211_deinit(bss);
6446         return NULL;
6447 }
6448
6449
6450 static void i802_deinit(void *priv)
6451 {
6452         struct i802_bss *bss = priv;
6453         wpa_driver_nl80211_deinit(bss);
6454 }
6455
6456
6457 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6458         enum wpa_driver_if_type type)
6459 {
6460         switch (type) {
6461         case WPA_IF_STATION:
6462                 return NL80211_IFTYPE_STATION;
6463         case WPA_IF_P2P_CLIENT:
6464         case WPA_IF_P2P_GROUP:
6465                 return NL80211_IFTYPE_P2P_CLIENT;
6466         case WPA_IF_AP_VLAN:
6467                 return NL80211_IFTYPE_AP_VLAN;
6468         case WPA_IF_AP_BSS:
6469                 return NL80211_IFTYPE_AP;
6470         case WPA_IF_P2P_GO:
6471                 return NL80211_IFTYPE_P2P_GO;
6472         case WPA_IF_P2P_DEVICE:
6473                 return NL80211_IFTYPE_P2P_DEVICE;
6474         }
6475         return -1;
6476 }
6477
6478
6479 #ifdef CONFIG_P2P
6480
6481 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6482 {
6483         struct wpa_driver_nl80211_data *drv;
6484         dl_list_for_each(drv, &global->interfaces,
6485                          struct wpa_driver_nl80211_data, list) {
6486                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6487                         return 1;
6488         }
6489         return 0;
6490 }
6491
6492
6493 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
6494                                       u8 *new_addr)
6495 {
6496         unsigned int idx;
6497
6498         if (!drv->global)
6499                 return -1;
6500
6501         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6502         for (idx = 0; idx < 64; idx++) {
6503                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6504                 new_addr[0] ^= idx << 2;
6505                 if (!nl80211_addr_in_use(drv->global, new_addr))
6506                         break;
6507         }
6508         if (idx == 64)
6509                 return -1;
6510
6511         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
6512                    MACSTR, MAC2STR(new_addr));
6513
6514         return 0;
6515 }
6516
6517 #endif /* CONFIG_P2P */
6518
6519
6520 struct wdev_info {
6521         u64 wdev_id;
6522         int wdev_id_set;
6523         u8 macaddr[ETH_ALEN];
6524 };
6525
6526 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6527 {
6528         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6529         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6530         struct wdev_info *wi = arg;
6531
6532         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6533                   genlmsg_attrlen(gnlh, 0), NULL);
6534         if (tb[NL80211_ATTR_WDEV]) {
6535                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6536                 wi->wdev_id_set = 1;
6537         }
6538
6539         if (tb[NL80211_ATTR_MAC])
6540                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6541                           ETH_ALEN);
6542
6543         return NL_SKIP;
6544 }
6545
6546
6547 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6548                                      const char *ifname, const u8 *addr,
6549                                      void *bss_ctx, void **drv_priv,
6550                                      char *force_ifname, u8 *if_addr,
6551                                      const char *bridge, int use_existing)
6552 {
6553         enum nl80211_iftype nlmode;
6554         struct i802_bss *bss = priv;
6555         struct wpa_driver_nl80211_data *drv = bss->drv;
6556         int ifidx;
6557         int added = 1;
6558
6559         if (addr)
6560                 os_memcpy(if_addr, addr, ETH_ALEN);
6561         nlmode = wpa_driver_nl80211_if_type(type);
6562         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6563                 struct wdev_info p2pdev_info;
6564
6565                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6566                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6567                                              0, nl80211_wdev_handler,
6568                                              &p2pdev_info, use_existing);
6569                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6570                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6571                                    ifname);
6572                         return -1;
6573                 }
6574
6575                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6576                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6577                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6578                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6579                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6580                            ifname,
6581                            (long long unsigned int) p2pdev_info.wdev_id);
6582         } else {
6583                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6584                                              0, NULL, NULL, use_existing);
6585                 if (use_existing && ifidx == -ENFILE) {
6586                         added = 0;
6587                         ifidx = if_nametoindex(ifname);
6588                 } else if (ifidx < 0) {
6589                         return -1;
6590                 }
6591         }
6592
6593         if (!addr) {
6594                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
6595                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6596                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6597                                             bss->ifname, if_addr) < 0) {
6598                         if (added)
6599                                 nl80211_remove_iface(drv, ifidx);
6600                         return -1;
6601                 }
6602         }
6603
6604 #ifdef CONFIG_P2P
6605         if (!addr &&
6606             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6607              type == WPA_IF_P2P_GO)) {
6608                 /* Enforce unique P2P Interface Address */
6609                 u8 new_addr[ETH_ALEN];
6610
6611                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6612                                        new_addr) < 0) {
6613                         if (added)
6614                                 nl80211_remove_iface(drv, ifidx);
6615                         return -1;
6616                 }
6617                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6618                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6619                                    "for P2P group interface");
6620                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
6621                                 if (added)
6622                                         nl80211_remove_iface(drv, ifidx);
6623                                 return -1;
6624                         }
6625                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6626                                                new_addr) < 0) {
6627                                 if (added)
6628                                         nl80211_remove_iface(drv, ifidx);
6629                                 return -1;
6630                         }
6631                 }
6632                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6633         }
6634 #endif /* CONFIG_P2P */
6635
6636         if (type == WPA_IF_AP_BSS) {
6637                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6638                 if (new_bss == NULL) {
6639                         if (added)
6640                                 nl80211_remove_iface(drv, ifidx);
6641                         return -1;
6642                 }
6643
6644                 if (bridge &&
6645                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6646                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6647                                    "interface %s to a bridge %s",
6648                                    ifname, bridge);
6649                         if (added)
6650                                 nl80211_remove_iface(drv, ifidx);
6651                         os_free(new_bss);
6652                         return -1;
6653                 }
6654
6655                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6656                 {
6657                         if (added)
6658                                 nl80211_remove_iface(drv, ifidx);
6659                         os_free(new_bss);
6660                         return -1;
6661                 }
6662                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6663                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6664                 new_bss->ifindex = ifidx;
6665                 new_bss->drv = drv;
6666                 new_bss->next = drv->first_bss->next;
6667                 new_bss->freq = drv->first_bss->freq;
6668                 new_bss->ctx = bss_ctx;
6669                 new_bss->added_if = added;
6670                 drv->first_bss->next = new_bss;
6671                 if (drv_priv)
6672                         *drv_priv = new_bss;
6673                 nl80211_init_bss(new_bss);
6674
6675                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6676                 if (nl80211_setup_ap(new_bss))
6677                         return -1;
6678         }
6679
6680         if (drv->global)
6681                 drv->global->if_add_ifindex = ifidx;
6682
6683         /*
6684          * Some virtual interfaces need to process EAPOL packets and events on
6685          * the parent interface. This is used mainly with hostapd.
6686          */
6687         if (ifidx > 0 &&
6688             (drv->hostapd ||
6689              nlmode == NL80211_IFTYPE_AP_VLAN ||
6690              nlmode == NL80211_IFTYPE_WDS ||
6691              nlmode == NL80211_IFTYPE_MONITOR))
6692                 add_ifidx(drv, ifidx);
6693
6694         return 0;
6695 }
6696
6697
6698 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6699                                         enum wpa_driver_if_type type,
6700                                         const char *ifname)
6701 {
6702         struct wpa_driver_nl80211_data *drv = bss->drv;
6703         int ifindex = if_nametoindex(ifname);
6704
6705         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6706                    __func__, type, ifname, ifindex, bss->added_if);
6707         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6708                 nl80211_remove_iface(drv, ifindex);
6709         else if (ifindex > 0 && !bss->added_if) {
6710                 struct wpa_driver_nl80211_data *drv2;
6711                 dl_list_for_each(drv2, &drv->global->interfaces,
6712                                  struct wpa_driver_nl80211_data, list)
6713                         del_ifidx(drv2, ifindex);
6714         }
6715
6716         if (type != WPA_IF_AP_BSS)
6717                 return 0;
6718
6719         if (bss->added_if_into_bridge) {
6720                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6721                                     bss->ifname) < 0)
6722                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6723                                    "interface %s from bridge %s: %s",
6724                                    bss->ifname, bss->brname, strerror(errno));
6725         }
6726         if (bss->added_bridge) {
6727                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6728                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6729                                    "bridge %s: %s",
6730                                    bss->brname, strerror(errno));
6731         }
6732
6733         if (bss != drv->first_bss) {
6734                 struct i802_bss *tbss;
6735
6736                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6737                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6738                         if (tbss->next == bss) {
6739                                 tbss->next = bss->next;
6740                                 /* Unsubscribe management frames */
6741                                 nl80211_teardown_ap(bss);
6742                                 nl80211_destroy_bss(bss);
6743                                 if (!bss->added_if)
6744                                         i802_set_iface_flags(bss, 0);
6745                                 os_free(bss);
6746                                 bss = NULL;
6747                                 break;
6748                         }
6749                 }
6750                 if (bss)
6751                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6752                                    "BSS %p in the list", __func__, bss);
6753         } else {
6754                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6755                 nl80211_teardown_ap(bss);
6756                 if (!bss->added_if && !drv->first_bss->next)
6757                         wpa_driver_nl80211_del_beacon(drv);
6758                 nl80211_destroy_bss(bss);
6759                 if (!bss->added_if)
6760                         i802_set_iface_flags(bss, 0);
6761                 if (drv->first_bss->next) {
6762                         drv->first_bss = drv->first_bss->next;
6763                         drv->ctx = drv->first_bss->ctx;
6764                         os_free(bss);
6765                 } else {
6766                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6767                 }
6768         }
6769
6770         return 0;
6771 }
6772
6773
6774 static int cookie_handler(struct nl_msg *msg, void *arg)
6775 {
6776         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6777         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6778         u64 *cookie = arg;
6779         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6780                   genlmsg_attrlen(gnlh, 0), NULL);
6781         if (tb[NL80211_ATTR_COOKIE])
6782                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6783         return NL_SKIP;
6784 }
6785
6786
6787 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6788                                   unsigned int freq, unsigned int wait,
6789                                   const u8 *buf, size_t buf_len,
6790                                   u64 *cookie_out, int no_cck, int no_ack,
6791                                   int offchanok)
6792 {
6793         struct wpa_driver_nl80211_data *drv = bss->drv;
6794         struct nl_msg *msg;
6795         u64 cookie;
6796         int ret = -1;
6797
6798         msg = nlmsg_alloc();
6799         if (!msg)
6800                 return -1;
6801
6802         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6803                    "no_ack=%d offchanok=%d",
6804                    freq, wait, no_cck, no_ack, offchanok);
6805         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6806         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
6807
6808         if (nl80211_set_iface_id(msg, bss) < 0)
6809                 goto nla_put_failure;
6810         if (freq)
6811                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6812         if (wait)
6813                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
6814         if (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6815                           drv->test_use_roc_tx))
6816                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
6817         if (no_cck)
6818                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
6819         if (no_ack)
6820                 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
6821
6822         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
6823
6824         cookie = 0;
6825         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6826         msg = NULL;
6827         if (ret) {
6828                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6829                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6830                            freq, wait);
6831                 goto nla_put_failure;
6832         }
6833         wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6834                    "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6835                    (long long unsigned int) cookie);
6836
6837         if (cookie_out)
6838                 *cookie_out = no_ack ? (u64) -1 : cookie;
6839
6840 nla_put_failure:
6841         nlmsg_free(msg);
6842         return ret;
6843 }
6844
6845
6846 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6847                                           unsigned int freq,
6848                                           unsigned int wait_time,
6849                                           const u8 *dst, const u8 *src,
6850                                           const u8 *bssid,
6851                                           const u8 *data, size_t data_len,
6852                                           int no_cck)
6853 {
6854         struct wpa_driver_nl80211_data *drv = bss->drv;
6855         int ret = -1;
6856         u8 *buf;
6857         struct ieee80211_hdr *hdr;
6858
6859         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6860                    "freq=%u MHz wait=%d ms no_cck=%d)",
6861                    drv->ifindex, freq, wait_time, no_cck);
6862
6863         buf = os_zalloc(24 + data_len);
6864         if (buf == NULL)
6865                 return ret;
6866         os_memcpy(buf + 24, data, data_len);
6867         hdr = (struct ieee80211_hdr *) buf;
6868         hdr->frame_control =
6869                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6870         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6871         os_memcpy(hdr->addr2, src, ETH_ALEN);
6872         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6873
6874         if (is_ap_interface(drv->nlmode) &&
6875             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6876              (int) freq == bss->freq || drv->device_ap_sme ||
6877              !drv->use_monitor))
6878                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6879                                                    0, freq, no_cck, 1,
6880                                                    wait_time);
6881         else
6882                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6883                                              24 + data_len,
6884                                              &drv->send_action_cookie,
6885                                              no_cck, 0, 1);
6886
6887         os_free(buf);
6888         return ret;
6889 }
6890
6891
6892 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6893 {
6894         struct i802_bss *bss = priv;
6895         struct wpa_driver_nl80211_data *drv = bss->drv;
6896         struct nl_msg *msg;
6897         int ret;
6898
6899         msg = nlmsg_alloc();
6900         if (!msg)
6901                 return;
6902
6903         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6904                    (long long unsigned int) drv->send_action_cookie);
6905         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
6906
6907         if (nl80211_set_iface_id(msg, bss) < 0)
6908                 goto nla_put_failure;
6909         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
6910
6911         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6912         msg = NULL;
6913         if (ret)
6914                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6915                            "(%s)", ret, strerror(-ret));
6916
6917  nla_put_failure:
6918         nlmsg_free(msg);
6919 }
6920
6921
6922 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6923                                                 unsigned int duration)
6924 {
6925         struct i802_bss *bss = priv;
6926         struct wpa_driver_nl80211_data *drv = bss->drv;
6927         struct nl_msg *msg;
6928         int ret;
6929         u64 cookie;
6930
6931         msg = nlmsg_alloc();
6932         if (!msg)
6933                 return -1;
6934
6935         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
6936
6937         if (nl80211_set_iface_id(msg, bss) < 0)
6938                 goto nla_put_failure;
6939
6940         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6941         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6942
6943         cookie = 0;
6944         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6945         msg = NULL;
6946         if (ret == 0) {
6947                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6948                            "0x%llx for freq=%u MHz duration=%u",
6949                            (long long unsigned int) cookie, freq, duration);
6950                 drv->remain_on_chan_cookie = cookie;
6951                 drv->pending_remain_on_chan = 1;
6952                 return 0;
6953         }
6954         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6955                    "(freq=%d duration=%u): %d (%s)",
6956                    freq, duration, ret, strerror(-ret));
6957 nla_put_failure:
6958         nlmsg_free(msg);
6959         return -1;
6960 }
6961
6962
6963 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6964 {
6965         struct i802_bss *bss = priv;
6966         struct wpa_driver_nl80211_data *drv = bss->drv;
6967         struct nl_msg *msg;
6968         int ret;
6969
6970         if (!drv->pending_remain_on_chan) {
6971                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6972                            "to cancel");
6973                 return -1;
6974         }
6975
6976         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6977                    "0x%llx",
6978                    (long long unsigned int) drv->remain_on_chan_cookie);
6979
6980         msg = nlmsg_alloc();
6981         if (!msg)
6982                 return -1;
6983
6984         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6985
6986         if (nl80211_set_iface_id(msg, bss) < 0)
6987                 goto nla_put_failure;
6988
6989         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
6990
6991         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6992         msg = NULL;
6993         if (ret == 0)
6994                 return 0;
6995         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6996                    "%d (%s)", ret, strerror(-ret));
6997 nla_put_failure:
6998         nlmsg_free(msg);
6999         return -1;
7000 }
7001
7002
7003 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
7004 {
7005         struct wpa_driver_nl80211_data *drv = bss->drv;
7006
7007         if (!report) {
7008                 if (bss->nl_preq && drv->device_ap_sme &&
7009                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
7010                     !bss->static_ap) {
7011                         /*
7012                          * Do not disable Probe Request reporting that was
7013                          * enabled in nl80211_setup_ap().
7014                          */
7015                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
7016                                    "Probe Request reporting nl_preq=%p while "
7017                                    "in AP mode", bss->nl_preq);
7018                 } else if (bss->nl_preq) {
7019                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
7020                                    "reporting nl_preq=%p", bss->nl_preq);
7021                         nl80211_destroy_eloop_handle(&bss->nl_preq);
7022                 }
7023                 return 0;
7024         }
7025
7026         if (bss->nl_preq) {
7027                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
7028                            "already on! nl_preq=%p", bss->nl_preq);
7029                 return 0;
7030         }
7031
7032         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
7033         if (bss->nl_preq == NULL)
7034                 return -1;
7035         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
7036                    "reporting nl_preq=%p", bss->nl_preq);
7037
7038         if (nl80211_register_frame(bss, bss->nl_preq,
7039                                    (WLAN_FC_TYPE_MGMT << 2) |
7040                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
7041                                    NULL, 0) < 0)
7042                 goto out_err;
7043
7044         nl80211_register_eloop_read(&bss->nl_preq,
7045                                     wpa_driver_nl80211_event_receive,
7046                                     bss->nl_cb);
7047
7048         return 0;
7049
7050  out_err:
7051         nl_destroy_handles(&bss->nl_preq);
7052         return -1;
7053 }
7054
7055
7056 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
7057                                      int ifindex, int disabled)
7058 {
7059         struct nl_msg *msg;
7060         struct nlattr *bands, *band;
7061         int ret;
7062
7063         msg = nlmsg_alloc();
7064         if (!msg)
7065                 return -1;
7066
7067         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
7068         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7069
7070         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
7071         if (!bands)
7072                 goto nla_put_failure;
7073
7074         /*
7075          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
7076          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
7077          * rates. All 5 GHz rates are left enabled.
7078          */
7079         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
7080         if (!band)
7081                 goto nla_put_failure;
7082         if (disabled) {
7083                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
7084                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
7085         }
7086         nla_nest_end(msg, band);
7087
7088         nla_nest_end(msg, bands);
7089
7090         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7091         msg = NULL;
7092         if (ret) {
7093                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
7094                            "(%s)", ret, strerror(-ret));
7095         } else
7096                 drv->disabled_11b_rates = disabled;
7097
7098         return ret;
7099
7100 nla_put_failure:
7101         nlmsg_free(msg);
7102         return -1;
7103 }
7104
7105
7106 static int wpa_driver_nl80211_deinit_ap(void *priv)
7107 {
7108         struct i802_bss *bss = priv;
7109         struct wpa_driver_nl80211_data *drv = bss->drv;
7110         if (!is_ap_interface(drv->nlmode))
7111                 return -1;
7112         wpa_driver_nl80211_del_beacon(drv);
7113         bss->beacon_set = 0;
7114
7115         /*
7116          * If the P2P GO interface was dynamically added, then it is
7117          * possible that the interface change to station is not possible.
7118          */
7119         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
7120                 return 0;
7121
7122         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7123 }
7124
7125
7126 static int wpa_driver_nl80211_stop_ap(void *priv)
7127 {
7128         struct i802_bss *bss = priv;
7129         struct wpa_driver_nl80211_data *drv = bss->drv;
7130         if (!is_ap_interface(drv->nlmode))
7131                 return -1;
7132         wpa_driver_nl80211_del_beacon(drv);
7133         bss->beacon_set = 0;
7134         return 0;
7135 }
7136
7137
7138 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
7139 {
7140         struct i802_bss *bss = priv;
7141         struct wpa_driver_nl80211_data *drv = bss->drv;
7142         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
7143                 return -1;
7144
7145         /*
7146          * If the P2P Client interface was dynamically added, then it is
7147          * possible that the interface change to station is not possible.
7148          */
7149         if (bss->if_dynamic)
7150                 return 0;
7151
7152         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
7153 }
7154
7155
7156 static void wpa_driver_nl80211_resume(void *priv)
7157 {
7158         struct i802_bss *bss = priv;
7159
7160         if (i802_set_iface_flags(bss, 1))
7161                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
7162 }
7163
7164
7165 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
7166                                   const u8 *ies, size_t ies_len)
7167 {
7168         struct i802_bss *bss = priv;
7169         struct wpa_driver_nl80211_data *drv = bss->drv;
7170         int ret;
7171         u8 *data, *pos;
7172         size_t data_len;
7173         const u8 *own_addr = bss->addr;
7174
7175         if (action != 1) {
7176                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
7177                            "action %d", action);
7178                 return -1;
7179         }
7180
7181         /*
7182          * Action frame payload:
7183          * Category[1] = 6 (Fast BSS Transition)
7184          * Action[1] = 1 (Fast BSS Transition Request)
7185          * STA Address
7186          * Target AP Address
7187          * FT IEs
7188          */
7189
7190         data_len = 2 + 2 * ETH_ALEN + ies_len;
7191         data = os_malloc(data_len);
7192         if (data == NULL)
7193                 return -1;
7194         pos = data;
7195         *pos++ = 0x06; /* FT Action category */
7196         *pos++ = action;
7197         os_memcpy(pos, own_addr, ETH_ALEN);
7198         pos += ETH_ALEN;
7199         os_memcpy(pos, target_ap, ETH_ALEN);
7200         pos += ETH_ALEN;
7201         os_memcpy(pos, ies, ies_len);
7202
7203         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
7204                                              drv->bssid, own_addr, drv->bssid,
7205                                              data, data_len, 0);
7206         os_free(data);
7207
7208         return ret;
7209 }
7210
7211
7212 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
7213 {
7214         struct i802_bss *bss = priv;
7215         struct wpa_driver_nl80211_data *drv = bss->drv;
7216         struct nl_msg *msg;
7217         struct nlattr *cqm;
7218         int ret = -1;
7219
7220         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
7221                    "hysteresis=%d", threshold, hysteresis);
7222
7223         msg = nlmsg_alloc();
7224         if (!msg)
7225                 return -1;
7226
7227         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
7228
7229         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7230
7231         cqm = nla_nest_start(msg, NL80211_ATTR_CQM);
7232         if (cqm == NULL)
7233                 goto nla_put_failure;
7234
7235         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
7236         NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
7237         nla_nest_end(msg, cqm);
7238
7239         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7240         msg = NULL;
7241
7242 nla_put_failure:
7243         nlmsg_free(msg);
7244         return ret;
7245 }
7246
7247
7248 static int get_channel_width(struct nl_msg *msg, void *arg)
7249 {
7250         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7251         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7252         struct wpa_signal_info *sig_change = arg;
7253
7254         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7255                   genlmsg_attrlen(gnlh, 0), NULL);
7256
7257         sig_change->center_frq1 = -1;
7258         sig_change->center_frq2 = -1;
7259         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
7260
7261         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
7262                 sig_change->chanwidth = convert2width(
7263                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
7264                 if (tb[NL80211_ATTR_CENTER_FREQ1])
7265                         sig_change->center_frq1 =
7266                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
7267                 if (tb[NL80211_ATTR_CENTER_FREQ2])
7268                         sig_change->center_frq2 =
7269                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
7270         }
7271
7272         return NL_SKIP;
7273 }
7274
7275
7276 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
7277                                      struct wpa_signal_info *sig)
7278 {
7279         struct nl_msg *msg;
7280
7281         msg = nlmsg_alloc();
7282         if (!msg)
7283                 return -ENOMEM;
7284
7285         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_INTERFACE);
7286         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7287
7288         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
7289
7290 nla_put_failure:
7291         nlmsg_free(msg);
7292         return -ENOBUFS;
7293 }
7294
7295
7296 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
7297 {
7298         struct i802_bss *bss = priv;
7299         struct wpa_driver_nl80211_data *drv = bss->drv;
7300         int res;
7301
7302         os_memset(si, 0, sizeof(*si));
7303         res = nl80211_get_link_signal(drv, si);
7304         if (res != 0)
7305                 return res;
7306
7307         res = nl80211_get_channel_width(drv, si);
7308         if (res != 0)
7309                 return res;
7310
7311         return nl80211_get_link_noise(drv, si);
7312 }
7313
7314
7315 static int wpa_driver_nl80211_shared_freq(void *priv)
7316 {
7317         struct i802_bss *bss = priv;
7318         struct wpa_driver_nl80211_data *drv = bss->drv;
7319         struct wpa_driver_nl80211_data *driver;
7320         int freq = 0;
7321
7322         /*
7323          * If the same PHY is in connected state with some other interface,
7324          * then retrieve the assoc freq.
7325          */
7326         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
7327                    drv->phyname);
7328
7329         dl_list_for_each(driver, &drv->global->interfaces,
7330                          struct wpa_driver_nl80211_data, list) {
7331                 if (drv == driver ||
7332                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
7333                     !driver->associated)
7334                         continue;
7335
7336                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
7337                            MACSTR,
7338                            driver->phyname, driver->first_bss->ifname,
7339                            MAC2STR(driver->first_bss->addr));
7340                 if (is_ap_interface(driver->nlmode))
7341                         freq = driver->first_bss->freq;
7342                 else
7343                         freq = nl80211_get_assoc_freq(driver);
7344                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
7345                            drv->phyname, freq);
7346         }
7347
7348         if (!freq)
7349                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
7350                            "PHY (%s) in associated state", drv->phyname);
7351
7352         return freq;
7353 }
7354
7355
7356 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
7357                               int encrypt)
7358 {
7359         struct i802_bss *bss = priv;
7360         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
7361                                              0, 0, 0, 0);
7362 }
7363
7364
7365 static int nl80211_set_param(void *priv, const char *param)
7366 {
7367         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
7368         if (param == NULL)
7369                 return 0;
7370
7371 #ifdef CONFIG_P2P
7372         if (os_strstr(param, "use_p2p_group_interface=1")) {
7373                 struct i802_bss *bss = priv;
7374                 struct wpa_driver_nl80211_data *drv = bss->drv;
7375
7376                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
7377                            "interface");
7378                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
7379                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
7380         }
7381 #endif /* CONFIG_P2P */
7382
7383         if (os_strstr(param, "use_monitor=1")) {
7384                 struct i802_bss *bss = priv;
7385                 struct wpa_driver_nl80211_data *drv = bss->drv;
7386                 drv->use_monitor = 1;
7387         }
7388
7389         if (os_strstr(param, "force_connect_cmd=1")) {
7390                 struct i802_bss *bss = priv;
7391                 struct wpa_driver_nl80211_data *drv = bss->drv;
7392                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
7393                 drv->force_connect_cmd = 1;
7394         }
7395
7396         if (os_strstr(param, "no_offchannel_tx=1")) {
7397                 struct i802_bss *bss = priv;
7398                 struct wpa_driver_nl80211_data *drv = bss->drv;
7399                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
7400                 drv->test_use_roc_tx = 1;
7401         }
7402
7403         return 0;
7404 }
7405
7406
7407 static void * nl80211_global_init(void)
7408 {
7409         struct nl80211_global *global;
7410         struct netlink_config *cfg;
7411
7412         global = os_zalloc(sizeof(*global));
7413         if (global == NULL)
7414                 return NULL;
7415         global->ioctl_sock = -1;
7416         dl_list_init(&global->interfaces);
7417         global->if_add_ifindex = -1;
7418
7419         cfg = os_zalloc(sizeof(*cfg));
7420         if (cfg == NULL)
7421                 goto err;
7422
7423         cfg->ctx = global;
7424         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
7425         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
7426         global->netlink = netlink_init(cfg);
7427         if (global->netlink == NULL) {
7428                 os_free(cfg);
7429                 goto err;
7430         }
7431
7432         if (wpa_driver_nl80211_init_nl_global(global) < 0)
7433                 goto err;
7434
7435         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7436         if (global->ioctl_sock < 0) {
7437                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7438                            strerror(errno));
7439                 goto err;
7440         }
7441
7442         return global;
7443
7444 err:
7445         nl80211_global_deinit(global);
7446         return NULL;
7447 }
7448
7449
7450 static void nl80211_global_deinit(void *priv)
7451 {
7452         struct nl80211_global *global = priv;
7453         if (global == NULL)
7454                 return;
7455         if (!dl_list_empty(&global->interfaces)) {
7456                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7457                            "nl80211_global_deinit",
7458                            dl_list_len(&global->interfaces));
7459         }
7460
7461         if (global->netlink)
7462                 netlink_deinit(global->netlink);
7463
7464         nl_destroy_handles(&global->nl);
7465
7466         if (global->nl_event)
7467                 nl80211_destroy_eloop_handle(&global->nl_event);
7468
7469         nl_cb_put(global->nl_cb);
7470
7471         if (global->ioctl_sock >= 0)
7472                 close(global->ioctl_sock);
7473
7474         os_free(global);
7475 }
7476
7477
7478 static const char * nl80211_get_radio_name(void *priv)
7479 {
7480         struct i802_bss *bss = priv;
7481         struct wpa_driver_nl80211_data *drv = bss->drv;
7482         return drv->phyname;
7483 }
7484
7485
7486 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7487                          const u8 *pmkid)
7488 {
7489         struct nl_msg *msg;
7490
7491         msg = nlmsg_alloc();
7492         if (!msg)
7493                 return -ENOMEM;
7494
7495         nl80211_cmd(bss->drv, msg, 0, cmd);
7496
7497         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7498         if (pmkid)
7499                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
7500         if (bssid)
7501                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7502
7503         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7504  nla_put_failure:
7505         nlmsg_free(msg);
7506         return -ENOBUFS;
7507 }
7508
7509
7510 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7511 {
7512         struct i802_bss *bss = priv;
7513         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7514         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7515 }
7516
7517
7518 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7519 {
7520         struct i802_bss *bss = priv;
7521         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7522                    MAC2STR(bssid));
7523         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7524 }
7525
7526
7527 static int nl80211_flush_pmkid(void *priv)
7528 {
7529         struct i802_bss *bss = priv;
7530         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7531         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7532 }
7533
7534
7535 static void clean_survey_results(struct survey_results *survey_results)
7536 {
7537         struct freq_survey *survey, *tmp;
7538
7539         if (dl_list_empty(&survey_results->survey_list))
7540                 return;
7541
7542         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7543                               struct freq_survey, list) {
7544                 dl_list_del(&survey->list);
7545                 os_free(survey);
7546         }
7547 }
7548
7549
7550 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7551                        struct dl_list *survey_list)
7552 {
7553         struct freq_survey *survey;
7554
7555         survey = os_zalloc(sizeof(struct freq_survey));
7556         if  (!survey)
7557                 return;
7558
7559         survey->ifidx = ifidx;
7560         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7561         survey->filled = 0;
7562
7563         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7564                 survey->nf = (int8_t)
7565                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7566                 survey->filled |= SURVEY_HAS_NF;
7567         }
7568
7569         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7570                 survey->channel_time =
7571                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7572                 survey->filled |= SURVEY_HAS_CHAN_TIME;
7573         }
7574
7575         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7576                 survey->channel_time_busy =
7577                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7578                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7579         }
7580
7581         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7582                 survey->channel_time_rx =
7583                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7584                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7585         }
7586
7587         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7588                 survey->channel_time_tx =
7589                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7590                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7591         }
7592
7593         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)",
7594                    survey->freq,
7595                    survey->nf,
7596                    (unsigned long int) survey->channel_time,
7597                    (unsigned long int) survey->channel_time_busy,
7598                    (unsigned long int) survey->channel_time_tx,
7599                    (unsigned long int) survey->channel_time_rx,
7600                    survey->filled);
7601
7602         dl_list_add_tail(survey_list, &survey->list);
7603 }
7604
7605
7606 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7607                            unsigned int freq_filter)
7608 {
7609         if (!freq_filter)
7610                 return 1;
7611
7612         return freq_filter == surveyed_freq;
7613 }
7614
7615
7616 static int survey_handler(struct nl_msg *msg, void *arg)
7617 {
7618         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7619         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7620         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7621         struct survey_results *survey_results;
7622         u32 surveyed_freq = 0;
7623         u32 ifidx;
7624
7625         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7626                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7627                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7628         };
7629
7630         survey_results = (struct survey_results *) arg;
7631
7632         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7633                   genlmsg_attrlen(gnlh, 0), NULL);
7634
7635         if (!tb[NL80211_ATTR_IFINDEX])
7636                 return NL_SKIP;
7637
7638         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7639
7640         if (!tb[NL80211_ATTR_SURVEY_INFO])
7641                 return NL_SKIP;
7642
7643         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7644                              tb[NL80211_ATTR_SURVEY_INFO],
7645                              survey_policy))
7646                 return NL_SKIP;
7647
7648         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7649                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7650                 return NL_SKIP;
7651         }
7652
7653         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7654
7655         if (!check_survey_ok(sinfo, surveyed_freq,
7656                              survey_results->freq_filter))
7657                 return NL_SKIP;
7658
7659         if (survey_results->freq_filter &&
7660             survey_results->freq_filter != surveyed_freq) {
7661                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7662                            surveyed_freq);
7663                 return NL_SKIP;
7664         }
7665
7666         add_survey(sinfo, ifidx, &survey_results->survey_list);
7667
7668         return NL_SKIP;
7669 }
7670
7671
7672 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7673 {
7674         struct i802_bss *bss = priv;
7675         struct wpa_driver_nl80211_data *drv = bss->drv;
7676         struct nl_msg *msg;
7677         int err = -ENOBUFS;
7678         union wpa_event_data data;
7679         struct survey_results *survey_results;
7680
7681         os_memset(&data, 0, sizeof(data));
7682         survey_results = &data.survey_results;
7683
7684         dl_list_init(&survey_results->survey_list);
7685
7686         msg = nlmsg_alloc();
7687         if (!msg)
7688                 goto nla_put_failure;
7689
7690         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7691
7692         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7693
7694         if (freq)
7695                 data.survey_results.freq_filter = freq;
7696
7697         do {
7698                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7699                 err = send_and_recv_msgs(drv, msg, survey_handler,
7700                                          survey_results);
7701         } while (err > 0);
7702
7703         if (err) {
7704                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7705                 goto out_clean;
7706         }
7707
7708         wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7709
7710 out_clean:
7711         clean_survey_results(survey_results);
7712 nla_put_failure:
7713         return err;
7714 }
7715
7716
7717 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
7718                                    const u8 *replay_ctr)
7719 {
7720         struct i802_bss *bss = priv;
7721         struct wpa_driver_nl80211_data *drv = bss->drv;
7722         struct nlattr *replay_nested;
7723         struct nl_msg *msg;
7724
7725         msg = nlmsg_alloc();
7726         if (!msg)
7727                 return;
7728
7729         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7730
7731         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7732
7733         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7734         if (!replay_nested)
7735                 goto nla_put_failure;
7736
7737         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
7738         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
7739         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7740                 replay_ctr);
7741
7742         nla_nest_end(msg, replay_nested);
7743
7744         send_and_recv_msgs(drv, msg, NULL, NULL);
7745         return;
7746  nla_put_failure:
7747         nlmsg_free(msg);
7748 }
7749
7750
7751 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7752                                     const u8 *addr, int qos)
7753 {
7754         /* send data frame to poll STA and check whether
7755          * this frame is ACKed */
7756         struct {
7757                 struct ieee80211_hdr hdr;
7758                 u16 qos_ctl;
7759         } STRUCT_PACKED nulldata;
7760         size_t size;
7761
7762         /* Send data frame to poll STA and check whether this frame is ACKed */
7763
7764         os_memset(&nulldata, 0, sizeof(nulldata));
7765
7766         if (qos) {
7767                 nulldata.hdr.frame_control =
7768                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7769                                      WLAN_FC_STYPE_QOS_NULL);
7770                 size = sizeof(nulldata);
7771         } else {
7772                 nulldata.hdr.frame_control =
7773                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7774                                      WLAN_FC_STYPE_NULLFUNC);
7775                 size = sizeof(struct ieee80211_hdr);
7776         }
7777
7778         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7779         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7780         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7781         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7782
7783         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7784                                          0, 0) < 0)
7785                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7786                            "send poll frame");
7787 }
7788
7789 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7790                                 int qos)
7791 {
7792         struct i802_bss *bss = priv;
7793         struct wpa_driver_nl80211_data *drv = bss->drv;
7794         struct nl_msg *msg;
7795
7796         if (!drv->poll_command_supported) {
7797                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7798                 return;
7799         }
7800
7801         msg = nlmsg_alloc();
7802         if (!msg)
7803                 return;
7804
7805         nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
7806
7807         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7808         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7809
7810         send_and_recv_msgs(drv, msg, NULL, NULL);
7811         return;
7812  nla_put_failure:
7813         nlmsg_free(msg);
7814 }
7815
7816
7817 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7818 {
7819         struct nl_msg *msg;
7820
7821         msg = nlmsg_alloc();
7822         if (!msg)
7823                 return -ENOMEM;
7824
7825         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
7826         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7827         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
7828                     enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
7829         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7830 nla_put_failure:
7831         nlmsg_free(msg);
7832         return -ENOBUFS;
7833 }
7834
7835
7836 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7837                                      int ctwindow)
7838 {
7839         struct i802_bss *bss = priv;
7840
7841         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7842                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7843
7844         if (opp_ps != -1 || ctwindow != -1) {
7845 #ifdef ANDROID_P2P
7846                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7847 #else /* ANDROID_P2P */
7848                 return -1; /* Not yet supported */
7849 #endif /* ANDROID_P2P */
7850         }
7851
7852         if (legacy_ps == -1)
7853                 return 0;
7854         if (legacy_ps != 0 && legacy_ps != 1)
7855                 return -1; /* Not yet supported */
7856
7857         return nl80211_set_power_save(bss, legacy_ps);
7858 }
7859
7860
7861 static int nl80211_start_radar_detection(void *priv,
7862                                          struct hostapd_freq_params *freq)
7863 {
7864         struct i802_bss *bss = priv;
7865         struct wpa_driver_nl80211_data *drv = bss->drv;
7866         struct nl_msg *msg;
7867         int ret;
7868
7869         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)",
7870                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7871                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7872
7873         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7874                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7875                            "detection");
7876                 return -1;
7877         }
7878
7879         msg = nlmsg_alloc();
7880         if (!msg)
7881                 return -1;
7882
7883         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_RADAR_DETECT);
7884         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7885
7886         if (nl80211_put_freq_params(msg, freq) < 0)
7887                 goto nla_put_failure;
7888
7889         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7890         msg = NULL;
7891         if (ret == 0)
7892                 return 0;
7893         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7894                    "%d (%s)", ret, strerror(-ret));
7895 nla_put_failure:
7896         nlmsg_free(msg);
7897         return -1;
7898 }
7899
7900 #ifdef CONFIG_TDLS
7901
7902 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7903                                   u8 dialog_token, u16 status_code,
7904                                   u32 peer_capab, int initiator, const u8 *buf,
7905                                   size_t len)
7906 {
7907         struct i802_bss *bss = priv;
7908         struct wpa_driver_nl80211_data *drv = bss->drv;
7909         struct nl_msg *msg;
7910
7911         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7912                 return -EOPNOTSUPP;
7913
7914         if (!dst)
7915                 return -EINVAL;
7916
7917         msg = nlmsg_alloc();
7918         if (!msg)
7919                 return -ENOMEM;
7920
7921         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
7922         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7923         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
7924         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
7925         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
7926         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
7927         if (peer_capab) {
7928                 /*
7929                  * The internal enum tdls_peer_capability definition is
7930                  * currently identical with the nl80211 enum
7931                  * nl80211_tdls_peer_capability, so no conversion is needed
7932                  * here.
7933                  */
7934                 NLA_PUT_U32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY, peer_capab);
7935         }
7936         if (initiator)
7937                 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_INITIATOR);
7938         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
7939
7940         return send_and_recv_msgs(drv, msg, NULL, NULL);
7941
7942 nla_put_failure:
7943         nlmsg_free(msg);
7944         return -ENOBUFS;
7945 }
7946
7947
7948 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7949 {
7950         struct i802_bss *bss = priv;
7951         struct wpa_driver_nl80211_data *drv = bss->drv;
7952         struct nl_msg *msg;
7953         enum nl80211_tdls_operation nl80211_oper;
7954
7955         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7956                 return -EOPNOTSUPP;
7957
7958         switch (oper) {
7959         case TDLS_DISCOVERY_REQ:
7960                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7961                 break;
7962         case TDLS_SETUP:
7963                 nl80211_oper = NL80211_TDLS_SETUP;
7964                 break;
7965         case TDLS_TEARDOWN:
7966                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7967                 break;
7968         case TDLS_ENABLE_LINK:
7969                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7970                 break;
7971         case TDLS_DISABLE_LINK:
7972                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7973                 break;
7974         case TDLS_ENABLE:
7975                 return 0;
7976         case TDLS_DISABLE:
7977                 return 0;
7978         default:
7979                 return -EINVAL;
7980         }
7981
7982         msg = nlmsg_alloc();
7983         if (!msg)
7984                 return -ENOMEM;
7985
7986         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
7987         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
7988         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7989         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7990
7991         return send_and_recv_msgs(drv, msg, NULL, NULL);
7992
7993 nla_put_failure:
7994         nlmsg_free(msg);
7995         return -ENOBUFS;
7996 }
7997
7998 #endif /* CONFIG TDLS */
7999
8000
8001 static int driver_nl80211_set_key(const char *ifname, void *priv,
8002                                   enum wpa_alg alg, const u8 *addr,
8003                                   int key_idx, int set_tx,
8004                                   const u8 *seq, size_t seq_len,
8005                                   const u8 *key, size_t key_len)
8006 {
8007         struct i802_bss *bss = priv;
8008         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
8009                                           set_tx, seq, seq_len, key, key_len);
8010 }
8011
8012
8013 static int driver_nl80211_scan2(void *priv,
8014                                 struct wpa_driver_scan_params *params)
8015 {
8016         struct i802_bss *bss = priv;
8017         return wpa_driver_nl80211_scan(bss, params);
8018 }
8019
8020
8021 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
8022                                          int reason_code)
8023 {
8024         struct i802_bss *bss = priv;
8025         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
8026 }
8027
8028
8029 static int driver_nl80211_authenticate(void *priv,
8030                                        struct wpa_driver_auth_params *params)
8031 {
8032         struct i802_bss *bss = priv;
8033         return wpa_driver_nl80211_authenticate(bss, params);
8034 }
8035
8036
8037 static void driver_nl80211_deinit(void *priv)
8038 {
8039         struct i802_bss *bss = priv;
8040         wpa_driver_nl80211_deinit(bss);
8041 }
8042
8043
8044 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
8045                                     const char *ifname)
8046 {
8047         struct i802_bss *bss = priv;
8048         return wpa_driver_nl80211_if_remove(bss, type, ifname);
8049 }
8050
8051
8052 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
8053                                     size_t data_len, int noack)
8054 {
8055         struct i802_bss *bss = priv;
8056         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
8057                                             0, 0, 0, 0);
8058 }
8059
8060
8061 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
8062 {
8063         struct i802_bss *bss = priv;
8064         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
8065 }
8066
8067
8068 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
8069                                        const char *ifname, int vlan_id)
8070 {
8071         struct i802_bss *bss = priv;
8072         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
8073 }
8074
8075
8076 static int driver_nl80211_read_sta_data(void *priv,
8077                                         struct hostap_sta_driver_data *data,
8078                                         const u8 *addr)
8079 {
8080         struct i802_bss *bss = priv;
8081         return i802_read_sta_data(bss, data, addr);
8082 }
8083
8084
8085 static int driver_nl80211_send_action(void *priv, unsigned int freq,
8086                                       unsigned int wait_time,
8087                                       const u8 *dst, const u8 *src,
8088                                       const u8 *bssid,
8089                                       const u8 *data, size_t data_len,
8090                                       int no_cck)
8091 {
8092         struct i802_bss *bss = priv;
8093         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
8094                                               bssid, data, data_len, no_cck);
8095 }
8096
8097
8098 static int driver_nl80211_probe_req_report(void *priv, int report)
8099 {
8100         struct i802_bss *bss = priv;
8101         return wpa_driver_nl80211_probe_req_report(bss, report);
8102 }
8103
8104
8105 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
8106                                             const u8 *ies, size_t ies_len)
8107 {
8108         int ret;
8109         struct nl_msg *msg;
8110         struct i802_bss *bss = priv;
8111         struct wpa_driver_nl80211_data *drv = bss->drv;
8112         u16 mdid = WPA_GET_LE16(md);
8113
8114         msg = nlmsg_alloc();
8115         if (!msg)
8116                 return -ENOMEM;
8117
8118         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
8119         nl80211_cmd(drv, msg, 0, NL80211_CMD_UPDATE_FT_IES);
8120         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8121         NLA_PUT(msg, NL80211_ATTR_IE, ies_len, ies);
8122         NLA_PUT_U16(msg, NL80211_ATTR_MDID, mdid);
8123
8124         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8125         if (ret) {
8126                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
8127                            "err=%d (%s)", ret, strerror(-ret));
8128         }
8129
8130         return ret;
8131
8132 nla_put_failure:
8133         nlmsg_free(msg);
8134         return -ENOBUFS;
8135 }
8136
8137
8138 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
8139 {
8140         struct i802_bss *bss = priv;
8141         struct wpa_driver_nl80211_data *drv = bss->drv;
8142
8143         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
8144                 return NULL;
8145
8146         return bss->addr;
8147 }
8148
8149
8150 static const char * scan_state_str(enum scan_states scan_state)
8151 {
8152         switch (scan_state) {
8153         case NO_SCAN:
8154                 return "NO_SCAN";
8155         case SCAN_REQUESTED:
8156                 return "SCAN_REQUESTED";
8157         case SCAN_STARTED:
8158                 return "SCAN_STARTED";
8159         case SCAN_COMPLETED:
8160                 return "SCAN_COMPLETED";
8161         case SCAN_ABORTED:
8162                 return "SCAN_ABORTED";
8163         case SCHED_SCAN_STARTED:
8164                 return "SCHED_SCAN_STARTED";
8165         case SCHED_SCAN_STOPPED:
8166                 return "SCHED_SCAN_STOPPED";
8167         case SCHED_SCAN_RESULTS:
8168                 return "SCHED_SCAN_RESULTS";
8169         }
8170
8171         return "??";
8172 }
8173
8174
8175 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
8176 {
8177         struct i802_bss *bss = priv;
8178         struct wpa_driver_nl80211_data *drv = bss->drv;
8179         int res;
8180         char *pos, *end;
8181
8182         pos = buf;
8183         end = buf + buflen;
8184
8185         res = os_snprintf(pos, end - pos,
8186                           "ifindex=%d\n"
8187                           "ifname=%s\n"
8188                           "brname=%s\n"
8189                           "addr=" MACSTR "\n"
8190                           "freq=%d\n"
8191                           "%s%s%s%s%s",
8192                           bss->ifindex,
8193                           bss->ifname,
8194                           bss->brname,
8195                           MAC2STR(bss->addr),
8196                           bss->freq,
8197                           bss->beacon_set ? "beacon_set=1\n" : "",
8198                           bss->added_if_into_bridge ?
8199                           "added_if_into_bridge=1\n" : "",
8200                           bss->added_bridge ? "added_bridge=1\n" : "",
8201                           bss->in_deinit ? "in_deinit=1\n" : "",
8202                           bss->if_dynamic ? "if_dynamic=1\n" : "");
8203         if (res < 0 || res >= end - pos)
8204                 return pos - buf;
8205         pos += res;
8206
8207         if (bss->wdev_id_set) {
8208                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
8209                                   (unsigned long long) bss->wdev_id);
8210                 if (res < 0 || res >= end - pos)
8211                         return pos - buf;
8212                 pos += res;
8213         }
8214
8215         res = os_snprintf(pos, end - pos,
8216                           "phyname=%s\n"
8217                           "perm_addr=" MACSTR "\n"
8218                           "drv_ifindex=%d\n"
8219                           "operstate=%d\n"
8220                           "scan_state=%s\n"
8221                           "auth_bssid=" MACSTR "\n"
8222                           "auth_attempt_bssid=" MACSTR "\n"
8223                           "bssid=" MACSTR "\n"
8224                           "prev_bssid=" MACSTR "\n"
8225                           "associated=%d\n"
8226                           "assoc_freq=%u\n"
8227                           "monitor_sock=%d\n"
8228                           "monitor_ifidx=%d\n"
8229                           "monitor_refcount=%d\n"
8230                           "last_mgmt_freq=%u\n"
8231                           "eapol_tx_sock=%d\n"
8232                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
8233                           drv->phyname,
8234                           MAC2STR(drv->perm_addr),
8235                           drv->ifindex,
8236                           drv->operstate,
8237                           scan_state_str(drv->scan_state),
8238                           MAC2STR(drv->auth_bssid),
8239                           MAC2STR(drv->auth_attempt_bssid),
8240                           MAC2STR(drv->bssid),
8241                           MAC2STR(drv->prev_bssid),
8242                           drv->associated,
8243                           drv->assoc_freq,
8244                           drv->monitor_sock,
8245                           drv->monitor_ifidx,
8246                           drv->monitor_refcount,
8247                           drv->last_mgmt_freq,
8248                           drv->eapol_tx_sock,
8249                           drv->ignore_if_down_event ?
8250                           "ignore_if_down_event=1\n" : "",
8251                           drv->scan_complete_events ?
8252                           "scan_complete_events=1\n" : "",
8253                           drv->disabled_11b_rates ?
8254                           "disabled_11b_rates=1\n" : "",
8255                           drv->pending_remain_on_chan ?
8256                           "pending_remain_on_chan=1\n" : "",
8257                           drv->in_interface_list ? "in_interface_list=1\n" : "",
8258                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
8259                           drv->poll_command_supported ?
8260                           "poll_command_supported=1\n" : "",
8261                           drv->data_tx_status ? "data_tx_status=1\n" : "",
8262                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
8263                           drv->retry_auth ? "retry_auth=1\n" : "",
8264                           drv->use_monitor ? "use_monitor=1\n" : "",
8265                           drv->ignore_next_local_disconnect ?
8266                           "ignore_next_local_disconnect=1\n" : "",
8267                           drv->ignore_next_local_deauth ?
8268                           "ignore_next_local_deauth=1\n" : "");
8269         if (res < 0 || res >= end - pos)
8270                 return pos - buf;
8271         pos += res;
8272
8273         if (drv->has_capability) {
8274                 res = os_snprintf(pos, end - pos,
8275                                   "capa.key_mgmt=0x%x\n"
8276                                   "capa.enc=0x%x\n"
8277                                   "capa.auth=0x%x\n"
8278                                   "capa.flags=0x%llx\n"
8279                                   "capa.max_scan_ssids=%d\n"
8280                                   "capa.max_sched_scan_ssids=%d\n"
8281                                   "capa.sched_scan_supported=%d\n"
8282                                   "capa.max_match_sets=%d\n"
8283                                   "capa.max_remain_on_chan=%u\n"
8284                                   "capa.max_stations=%u\n"
8285                                   "capa.probe_resp_offloads=0x%x\n"
8286                                   "capa.max_acl_mac_addrs=%u\n"
8287                                   "capa.num_multichan_concurrent=%u\n",
8288                                   drv->capa.key_mgmt,
8289                                   drv->capa.enc,
8290                                   drv->capa.auth,
8291                                   (unsigned long long) drv->capa.flags,
8292                                   drv->capa.max_scan_ssids,
8293                                   drv->capa.max_sched_scan_ssids,
8294                                   drv->capa.sched_scan_supported,
8295                                   drv->capa.max_match_sets,
8296                                   drv->capa.max_remain_on_chan,
8297                                   drv->capa.max_stations,
8298                                   drv->capa.probe_resp_offloads,
8299                                   drv->capa.max_acl_mac_addrs,
8300                                   drv->capa.num_multichan_concurrent);
8301                 if (res < 0 || res >= end - pos)
8302                         return pos - buf;
8303                 pos += res;
8304         }
8305
8306         return pos - buf;
8307 }
8308
8309
8310 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
8311 {
8312         if (settings->head)
8313                 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD,
8314                         settings->head_len, settings->head);
8315
8316         if (settings->tail)
8317                 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL,
8318                         settings->tail_len, settings->tail);
8319
8320         if (settings->beacon_ies)
8321                 NLA_PUT(msg, NL80211_ATTR_IE,
8322                         settings->beacon_ies_len, settings->beacon_ies);
8323
8324         if (settings->proberesp_ies)
8325                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
8326                         settings->proberesp_ies_len, settings->proberesp_ies);
8327
8328         if (settings->assocresp_ies)
8329                 NLA_PUT(msg,
8330                         NL80211_ATTR_IE_ASSOC_RESP,
8331                         settings->assocresp_ies_len, settings->assocresp_ies);
8332
8333         if (settings->probe_resp)
8334                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP,
8335                         settings->probe_resp_len, settings->probe_resp);
8336
8337         return 0;
8338
8339 nla_put_failure:
8340         return -ENOBUFS;
8341 }
8342
8343
8344 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
8345 {
8346         struct nl_msg *msg;
8347         struct i802_bss *bss = priv;
8348         struct wpa_driver_nl80211_data *drv = bss->drv;
8349         struct nlattr *beacon_csa;
8350         int ret = -ENOBUFS;
8351
8352         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
8353                    settings->cs_count, settings->block_tx,
8354                    settings->freq_params.freq, settings->freq_params.bandwidth,
8355                    settings->freq_params.center_freq1,
8356                    settings->freq_params.center_freq2);
8357
8358         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8359                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
8360                 return -EOPNOTSUPP;
8361         }
8362
8363         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
8364             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
8365                 return -EOPNOTSUPP;
8366
8367         /* check settings validity */
8368         if (!settings->beacon_csa.tail ||
8369             ((settings->beacon_csa.tail_len <=
8370               settings->counter_offset_beacon) ||
8371              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
8372               settings->cs_count)))
8373                 return -EINVAL;
8374
8375         if (settings->beacon_csa.probe_resp &&
8376             ((settings->beacon_csa.probe_resp_len <=
8377               settings->counter_offset_presp) ||
8378              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
8379               settings->cs_count)))
8380                 return -EINVAL;
8381
8382         msg = nlmsg_alloc();
8383         if (!msg)
8384                 return -ENOMEM;
8385
8386         nl80211_cmd(drv, msg, 0, NL80211_CMD_CHANNEL_SWITCH);
8387         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8388         NLA_PUT_U32(msg, NL80211_ATTR_CH_SWITCH_COUNT, settings->cs_count);
8389         ret = nl80211_put_freq_params(msg, &settings->freq_params);
8390         if (ret)
8391                 goto error;
8392
8393         if (settings->block_tx)
8394                 NLA_PUT_FLAG(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX);
8395
8396         /* beacon_after params */
8397         ret = set_beacon_data(msg, &settings->beacon_after);
8398         if (ret)
8399                 goto error;
8400
8401         /* beacon_csa params */
8402         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8403         if (!beacon_csa)
8404                 goto nla_put_failure;
8405
8406         ret = set_beacon_data(msg, &settings->beacon_csa);
8407         if (ret)
8408                 goto error;
8409
8410         NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8411                     settings->counter_offset_beacon);
8412
8413         if (settings->beacon_csa.probe_resp)
8414                 NLA_PUT_U16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8415                             settings->counter_offset_presp);
8416
8417         nla_nest_end(msg, beacon_csa);
8418         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8419         if (ret) {
8420                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8421                            ret, strerror(-ret));
8422         }
8423         return ret;
8424
8425 nla_put_failure:
8426         ret = -ENOBUFS;
8427 error:
8428         nlmsg_free(msg);
8429         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8430         return ret;
8431 }
8432
8433
8434 #ifdef CONFIG_TESTING_OPTIONS
8435 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8436 {
8437         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8438         struct wpabuf *buf = arg;
8439
8440         if (!buf)
8441                 return NL_SKIP;
8442
8443         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8444                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8445                 return NL_SKIP;
8446         }
8447
8448         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8449                         genlmsg_attrlen(gnlh, 0));
8450
8451         return NL_SKIP;
8452 }
8453 #endif /* CONFIG_TESTING_OPTIONS */
8454
8455
8456 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8457 {
8458         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8459         struct nlattr *nl_vendor_reply, *nl;
8460         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8461         struct wpabuf *buf = arg;
8462         int rem;
8463
8464         if (!buf)
8465                 return NL_SKIP;
8466
8467         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8468                   genlmsg_attrlen(gnlh, 0), NULL);
8469         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8470
8471         if (!nl_vendor_reply)
8472                 return NL_SKIP;
8473
8474         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8475                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8476                 return NL_SKIP;
8477         }
8478
8479         nla_for_each_nested(nl, nl_vendor_reply, rem) {
8480                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8481         }
8482
8483         return NL_SKIP;
8484 }
8485
8486
8487 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8488                               unsigned int subcmd, const u8 *data,
8489                               size_t data_len, struct wpabuf *buf)
8490 {
8491         struct i802_bss *bss = priv;
8492         struct wpa_driver_nl80211_data *drv = bss->drv;
8493         struct nl_msg *msg;
8494         int ret;
8495
8496         msg = nlmsg_alloc();
8497         if (!msg)
8498                 return -ENOMEM;
8499
8500 #ifdef CONFIG_TESTING_OPTIONS
8501         if (vendor_id == 0xffffffff) {
8502                 nl80211_cmd(drv, msg, 0, subcmd);
8503                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8504                     0)
8505                         goto nla_put_failure;
8506                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8507                 if (ret)
8508                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8509                                    ret);
8510                 return ret;
8511         }
8512 #endif /* CONFIG_TESTING_OPTIONS */
8513
8514         nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8515         if (nl80211_set_iface_id(msg, bss) < 0)
8516                 goto nla_put_failure;
8517         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, vendor_id);
8518         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd);
8519         if (data)
8520                 NLA_PUT(msg, NL80211_ATTR_VENDOR_DATA, data_len, data);
8521
8522         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8523         if (ret)
8524                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8525                            ret);
8526         return ret;
8527
8528 nla_put_failure:
8529         nlmsg_free(msg);
8530         return -ENOBUFS;
8531 }
8532
8533
8534 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8535                                u8 qos_map_set_len)
8536 {
8537         struct i802_bss *bss = priv;
8538         struct wpa_driver_nl80211_data *drv = bss->drv;
8539         struct nl_msg *msg;
8540         int ret;
8541
8542         msg = nlmsg_alloc();
8543         if (!msg)
8544                 return -ENOMEM;
8545
8546         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8547                     qos_map_set, qos_map_set_len);
8548
8549         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_QOS_MAP);
8550         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8551         NLA_PUT(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set);
8552
8553         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8554         if (ret)
8555                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8556
8557         return ret;
8558
8559 nla_put_failure:
8560         nlmsg_free(msg);
8561         return -ENOBUFS;
8562 }
8563
8564
8565 static int nl80211_set_wowlan(void *priv,
8566                               const struct wowlan_triggers *triggers)
8567 {
8568         struct i802_bss *bss = priv;
8569         struct wpa_driver_nl80211_data *drv = bss->drv;
8570         struct nl_msg *msg;
8571         struct nlattr *wowlan_triggers;
8572         int ret;
8573
8574         msg = nlmsg_alloc();
8575         if (!msg)
8576                 return -ENOMEM;
8577
8578         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8579
8580         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WOWLAN);
8581         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8582
8583         wowlan_triggers = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8584         if (!wowlan_triggers)
8585                 goto nla_put_failure;
8586
8587         if (triggers->any)
8588                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
8589         if (triggers->disconnect)
8590                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
8591         if (triggers->magic_pkt)
8592                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
8593         if (triggers->gtk_rekey_failure)
8594                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
8595         if (triggers->eap_identity_req)
8596                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
8597         if (triggers->four_way_handshake)
8598                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
8599         if (triggers->rfkill_release)
8600                 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
8601
8602         nla_nest_end(msg, wowlan_triggers);
8603
8604         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8605         if (ret)
8606                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8607
8608         return ret;
8609
8610 nla_put_failure:
8611         nlmsg_free(msg);
8612         return -ENOBUFS;
8613 }
8614
8615
8616 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8617 {
8618         struct i802_bss *bss = priv;
8619         struct wpa_driver_nl80211_data *drv = bss->drv;
8620         struct nl_msg *msg;
8621         struct nlattr *params;
8622
8623         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8624
8625         if (!drv->roaming_vendor_cmd_avail) {
8626                 wpa_printf(MSG_DEBUG,
8627                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8628                 return -1;
8629         }
8630
8631         msg = nlmsg_alloc();
8632         if (!msg)
8633                 return -ENOMEM;
8634
8635         nl80211_cmd(drv, msg, 0, NL80211_CMD_VENDOR);
8636
8637         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8638         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA);
8639         NLA_PUT_U32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8640                     QCA_NL80211_VENDOR_SUBCMD_ROAMING);
8641
8642         params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
8643         if (!params)
8644                 goto nla_put_failure;
8645         NLA_PUT_U32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8646                     allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8647                     QCA_ROAMING_NOT_ALLOWED);
8648         if (bssid)
8649                 NLA_PUT(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid);
8650         nla_nest_end(msg, params);
8651
8652         return send_and_recv_msgs(drv, msg, NULL, NULL);
8653
8654  nla_put_failure:
8655         nlmsg_free(msg);
8656         return -1;
8657 }
8658
8659
8660 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8661 {
8662         struct i802_bss *bss = priv;
8663         struct wpa_driver_nl80211_data *drv = bss->drv;
8664         int new_addr = addr != NULL;
8665
8666         if (!addr)
8667                 addr = drv->perm_addr;
8668
8669         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8670                 return -1;
8671
8672         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8673         {
8674                 wpa_printf(MSG_DEBUG,
8675                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8676                            bss->ifname, MAC2STR(addr));
8677                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8678                                           1) < 0) {
8679                         wpa_printf(MSG_DEBUG,
8680                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8681                 }
8682                 return -1;
8683         }
8684
8685         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8686                    bss->ifname, MAC2STR(addr));
8687         drv->addr_changed = new_addr;
8688         os_memcpy(bss->addr, addr, ETH_ALEN);
8689
8690         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8691         {
8692                 wpa_printf(MSG_DEBUG,
8693                            "nl80211: Could not restore interface UP after set_mac_addr");
8694         }
8695
8696         return 0;
8697 }
8698
8699
8700 #ifdef CONFIG_MESH
8701
8702 static int wpa_driver_nl80211_init_mesh(void *priv)
8703 {
8704         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8705                 wpa_printf(MSG_INFO,
8706                            "nl80211: Failed to set interface into mesh mode");
8707                 return -1;
8708         }
8709         return 0;
8710 }
8711
8712
8713 static int
8714 wpa_driver_nl80211_join_mesh(void *priv,
8715                              struct wpa_driver_mesh_join_params *params)
8716 {
8717         struct i802_bss *bss = priv;
8718         struct wpa_driver_nl80211_data *drv = bss->drv;
8719         struct nl_msg *msg;
8720         struct nlattr *container;
8721         int ret = 0;
8722
8723         msg = nlmsg_alloc();
8724         if (!msg)
8725                 return -1;
8726
8727         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8728         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_MESH);
8729
8730         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8731         /* XXX: need chtype too in case we want HT */
8732         if (params->freq) {
8733                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
8734                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
8735         }
8736
8737         if (params->basic_rates) {
8738                 u8 rates[NL80211_MAX_SUPP_RATES];
8739                 u8 rates_len = 0;
8740                 int i;
8741
8742                 for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
8743                         if (params->basic_rates[i] < 0)
8744                                 break;
8745                         rates[rates_len++] = params->basic_rates[i] / 5;
8746                 }
8747
8748                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
8749         }
8750
8751         if (params->meshid) {
8752                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
8753                                   params->meshid, params->meshid_len);
8754                 NLA_PUT(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
8755                         params->meshid);
8756         }
8757
8758         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8759
8760         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8761         if (!container)
8762                 goto nla_put_failure;
8763
8764         if (params->ies) {
8765                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8766                 NLA_PUT(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8767                         params->ies);
8768         }
8769         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8770         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8771                 NLA_PUT_U8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1);
8772                 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AUTH);
8773         }
8774         if (params->flags & WPA_DRIVER_MESH_FLAG_AMPE)
8775                 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_AMPE);
8776         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8777                 NLA_PUT_FLAG(msg, NL80211_MESH_SETUP_USERSPACE_MPM);
8778         nla_nest_end(msg, container);
8779
8780         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8781         if (!container)
8782                 goto nla_put_failure;
8783
8784         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS))
8785                 NLA_PUT_U32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0);
8786         nla_nest_end(msg, container);
8787
8788         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8789         msg = NULL;
8790         if (ret) {
8791                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8792                            ret, strerror(-ret));
8793                 goto nla_put_failure;
8794         }
8795         ret = 0;
8796         bss->freq = params->freq;
8797         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8798
8799
8800 nla_put_failure:
8801         nlmsg_free(msg);
8802         return ret;
8803 }
8804
8805
8806 static int wpa_driver_nl80211_leave_mesh(void *priv)
8807 {
8808         struct i802_bss *bss = priv;
8809         struct wpa_driver_nl80211_data *drv = bss->drv;
8810         struct nl_msg *msg;
8811         int ret = 0;
8812
8813         msg = nlmsg_alloc();
8814         if (!msg)
8815                 return -1;
8816
8817         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8818         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_MESH);
8819         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8820
8821         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8822         msg = NULL;
8823         if (ret) {
8824                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8825                            ret, strerror(-ret));
8826                 goto nla_put_failure;
8827         }
8828         ret = 0;
8829         wpa_printf(MSG_DEBUG, "nl80211: mesh leave request send successfully");
8830
8831 nla_put_failure:
8832         nlmsg_free(msg);
8833         return ret;
8834 }
8835
8836 #endif /* CONFIG_MESH */
8837
8838
8839 static int wpa_driver_br_add_ip_neigh(void *priv, be32 ipaddr,
8840                                       int prefixlen, const u8 *addr)
8841 {
8842 #ifdef CONFIG_LIBNL3_ROUTE
8843         struct i802_bss *bss = priv;
8844         struct wpa_driver_nl80211_data *drv = bss->drv;
8845         struct rtnl_neigh *rn;
8846         struct nl_addr *nl_ipaddr = NULL;
8847         struct nl_addr *nl_lladdr = NULL;
8848         int res;
8849
8850         if (ipaddr == 0 || prefixlen == 0 || !addr)
8851                 return -EINVAL;
8852
8853         if (bss->br_ifindex == 0) {
8854                 wpa_printf(MSG_DEBUG,
8855                            "nl80211: bridge must be set before adding an ip neigh to it");
8856                 return -1;
8857         }
8858
8859         if (!drv->rtnl_sk) {
8860                 wpa_printf(MSG_DEBUG,
8861                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8862                 return -1;
8863         }
8864
8865         rn = rtnl_neigh_alloc();
8866         if (rn == NULL)
8867                 return -ENOMEM;
8868
8869         /* set the destination ip address for neigh */
8870         nl_ipaddr = nl_addr_build(AF_INET, &ipaddr, sizeof(ipaddr));
8871         if (nl_ipaddr == NULL) {
8872                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8873                 res = -ENOMEM;
8874                 goto errout;
8875         }
8876         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8877         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8878         if (res) {
8879                 wpa_printf(MSG_DEBUG,
8880                            "nl80211: neigh set destination addr failed");
8881                 goto errout;
8882         }
8883
8884         /* set the corresponding lladdr for neigh */
8885         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8886         if (nl_lladdr == NULL) {
8887                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8888                 res = -ENOMEM;
8889                 goto errout;
8890         }
8891         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8892
8893         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8894         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8895
8896         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8897         if (res) {
8898                 wpa_printf(MSG_DEBUG,
8899                            "nl80211: Adding bridge ip neigh failed: %s",
8900                            strerror(errno));
8901         }
8902 errout:
8903         if (nl_lladdr)
8904                 nl_addr_put(nl_lladdr);
8905         if (nl_ipaddr)
8906                 nl_addr_put(nl_ipaddr);
8907         if (rn)
8908                 rtnl_neigh_put(rn);
8909         return res;
8910 #else /* CONFIG_LIBNL3_ROUTE */
8911         return -1;
8912 #endif /* CONFIG_LIBNL3_ROUTE */
8913 }
8914
8915
8916 static int wpa_driver_br_delete_ip_neigh(void *priv, be32 ipaddr)
8917 {
8918 #ifdef CONFIG_LIBNL3_ROUTE
8919         struct i802_bss *bss = priv;
8920         struct wpa_driver_nl80211_data *drv = bss->drv;
8921         struct rtnl_neigh *rn;
8922         struct nl_addr *nl_ipaddr;
8923         int res;
8924
8925         if (ipaddr == 0)
8926                 return -EINVAL;
8927
8928         if (bss->br_ifindex == 0) {
8929                 wpa_printf(MSG_DEBUG,
8930                            "nl80211: bridge must be set to delete an ip neigh");
8931                 return -1;
8932         }
8933
8934         if (!drv->rtnl_sk) {
8935                 wpa_printf(MSG_DEBUG,
8936                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8937                 return -1;
8938         }
8939
8940         rn = rtnl_neigh_alloc();
8941         if (rn == NULL)
8942                 return -ENOMEM;
8943
8944         /* set the destination ip address for neigh */
8945         nl_ipaddr = nl_addr_build(AF_INET, &ipaddr, sizeof(ipaddr));
8946         if (nl_ipaddr == NULL) {
8947                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8948                 res = -ENOMEM;
8949                 goto errout;
8950         }
8951         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8952         if (res) {
8953                 wpa_printf(MSG_DEBUG,
8954                            "nl80211: neigh set destination addr failed");
8955                 goto errout;
8956         }
8957
8958         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8959
8960         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8961         if (res) {
8962                 wpa_printf(MSG_DEBUG,
8963                            "nl80211: Deleting bridge ip neigh failed: %s",
8964                            strerror(errno));
8965         }
8966 errout:
8967         if (nl_ipaddr)
8968                 nl_addr_put(nl_ipaddr);
8969         if (rn)
8970                 rtnl_neigh_put(rn);
8971         return res;
8972 #else /* CONFIG_LIBNL3_ROUTE */
8973         return -1;
8974 #endif /* CONFIG_LIBNL3_ROUTE */
8975 }
8976
8977
8978 static int linux_write_system_file(const char *path, unsigned int val)
8979 {
8980         char buf[50];
8981         int fd, len;
8982
8983         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8984         if (len < 0)
8985                 return -1;
8986
8987         fd = open(path, O_WRONLY);
8988         if (fd < 0)
8989                 return -1;
8990
8991         if (write(fd, buf, len) < 0) {
8992                 wpa_printf(MSG_DEBUG,
8993                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8994                            path, val);
8995                 close(fd);
8996                 return -1;
8997         }
8998         close(fd);
8999
9000         return 0;
9001 }
9002
9003
9004 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
9005 {
9006         switch (attr) {
9007         case DRV_BR_PORT_ATTR_PROXYARP:
9008                 return "proxyarp";
9009         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
9010                 return "hairpin_mode";
9011         }
9012
9013         return NULL;
9014 }
9015
9016
9017 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
9018                                        unsigned int val)
9019 {
9020         struct i802_bss *bss = priv;
9021         char path[128];
9022         const char *attr_txt;
9023
9024         attr_txt = drv_br_port_attr_str(attr);
9025         if (attr_txt == NULL)
9026                 return -EINVAL;
9027
9028         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
9029                     bss->ifname, attr_txt);
9030
9031         if (linux_write_system_file(path, val))
9032                 return -1;
9033
9034         return 0;
9035 }
9036
9037
9038 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9039         .name = "nl80211",
9040         .desc = "Linux nl80211/cfg80211",
9041         .get_bssid = wpa_driver_nl80211_get_bssid,
9042         .get_ssid = wpa_driver_nl80211_get_ssid,
9043         .set_key = driver_nl80211_set_key,
9044         .scan2 = driver_nl80211_scan2,
9045         .sched_scan = wpa_driver_nl80211_sched_scan,
9046         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9047         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9048         .deauthenticate = driver_nl80211_deauthenticate,
9049         .authenticate = driver_nl80211_authenticate,
9050         .associate = wpa_driver_nl80211_associate,
9051         .global_init = nl80211_global_init,
9052         .global_deinit = nl80211_global_deinit,
9053         .init2 = wpa_driver_nl80211_init,
9054         .deinit = driver_nl80211_deinit,
9055         .get_capa = wpa_driver_nl80211_get_capa,
9056         .set_operstate = wpa_driver_nl80211_set_operstate,
9057         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9058         .set_country = wpa_driver_nl80211_set_country,
9059         .get_country = wpa_driver_nl80211_get_country,
9060         .set_ap = wpa_driver_nl80211_set_ap,
9061         .set_acl = wpa_driver_nl80211_set_acl,
9062         .if_add = wpa_driver_nl80211_if_add,
9063         .if_remove = driver_nl80211_if_remove,
9064         .send_mlme = driver_nl80211_send_mlme,
9065         .get_hw_feature_data = nl80211_get_hw_feature_data,
9066         .sta_add = wpa_driver_nl80211_sta_add,
9067         .sta_remove = driver_nl80211_sta_remove,
9068         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9069         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9070         .hapd_init = i802_init,
9071         .hapd_deinit = i802_deinit,
9072         .set_wds_sta = i802_set_wds_sta,
9073         .get_seqnum = i802_get_seqnum,
9074         .flush = i802_flush,
9075         .get_inact_sec = i802_get_inact_sec,
9076         .sta_clear_stats = i802_sta_clear_stats,
9077         .set_rts = i802_set_rts,
9078         .set_frag = i802_set_frag,
9079         .set_tx_queue_params = i802_set_tx_queue_params,
9080         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9081         .sta_deauth = i802_sta_deauth,
9082         .sta_disassoc = i802_sta_disassoc,
9083         .read_sta_data = driver_nl80211_read_sta_data,
9084         .set_freq = i802_set_freq,
9085         .send_action = driver_nl80211_send_action,
9086         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9087         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9088         .cancel_remain_on_channel =
9089         wpa_driver_nl80211_cancel_remain_on_channel,
9090         .probe_req_report = driver_nl80211_probe_req_report,
9091         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9092         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9093         .resume = wpa_driver_nl80211_resume,
9094         .send_ft_action = nl80211_send_ft_action,
9095         .signal_monitor = nl80211_signal_monitor,
9096         .signal_poll = nl80211_signal_poll,
9097         .send_frame = nl80211_send_frame,
9098         .shared_freq = wpa_driver_nl80211_shared_freq,
9099         .set_param = nl80211_set_param,
9100         .get_radio_name = nl80211_get_radio_name,
9101         .add_pmkid = nl80211_add_pmkid,
9102         .remove_pmkid = nl80211_remove_pmkid,
9103         .flush_pmkid = nl80211_flush_pmkid,
9104         .set_rekey_info = nl80211_set_rekey_info,
9105         .poll_client = nl80211_poll_client,
9106         .set_p2p_powersave = nl80211_set_p2p_powersave,
9107         .start_dfs_cac = nl80211_start_radar_detection,
9108         .stop_ap = wpa_driver_nl80211_stop_ap,
9109 #ifdef CONFIG_TDLS
9110         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9111         .tdls_oper = nl80211_tdls_oper,
9112 #endif /* CONFIG_TDLS */
9113         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9114         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9115         .get_survey = wpa_driver_nl80211_get_survey,
9116         .status = wpa_driver_nl80211_status,
9117         .switch_channel = nl80211_switch_channel,
9118 #ifdef ANDROID_P2P
9119         .set_noa = wpa_driver_set_p2p_noa,
9120         .get_noa = wpa_driver_get_p2p_noa,
9121         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9122 #endif /* ANDROID_P2P */
9123 #ifdef ANDROID
9124         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9125 #endif /* ANDROID */
9126         .vendor_cmd = nl80211_vendor_cmd,
9127         .set_qos_map = nl80211_set_qos_map,
9128         .set_wowlan = nl80211_set_wowlan,
9129         .roaming = nl80211_roaming,
9130         .set_mac_addr = nl80211_set_mac_addr,
9131 #ifdef CONFIG_MESH
9132         .init_mesh = wpa_driver_nl80211_init_mesh,
9133         .join_mesh = wpa_driver_nl80211_join_mesh,
9134         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9135 #endif /* CONFIG_MESH */
9136         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9137         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9138         .br_port_set_attr = wpa_driver_br_port_set_attr,
9139 };