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