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