src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2015, 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 #endif /* ANDROID */
  91
  92
  93 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  94 {
  95         struct nl_handle *handle;
  96
  97         handle = nl80211_handle_alloc(cb);
  98         if (handle == NULL) {
  99                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 100                            "callbacks (%s)", dbg);
 101                 return NULL;
 102         }
 103
 104         if (genl_connect(handle)) {
 105                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 106                            "netlink (%s)", dbg);
 107                 nl80211_handle_destroy(handle);
 108                 return NULL;
 109         }
 110
 111         return handle;
 112 }
 113
 114
 115 static void nl_destroy_handles(struct nl_handle **handle)
 116 {
 117         if (*handle == NULL)
 118                 return;
 119         nl80211_handle_destroy(*handle);
 120         *handle = NULL;
 121 }
 122
 123
 124 #if __WORDSIZE == 64
 125 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 126 #else
 127 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 128 #endif
 129
 130 static void nl80211_register_eloop_read(struct nl_handle **handle,
 131                                         eloop_sock_handler handler,
 132                                         void *eloop_data)
 133 {
 134 #ifdef CONFIG_LIBNL20
 135         /*
 136          * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
 137          * by default. It is possible to hit that limit in some cases where
 138          * operations are blocked, e.g., with a burst of Deauthentication frames
 139          * to hostapd and STA entry deletion. Try to increase the buffer to make
 140          * this less likely to occur.
 141          */
 142         if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
 143                 wpa_printf(MSG_DEBUG,
 144                            "nl80211: Could not set nl_socket RX buffer size: %s",
 145                            strerror(errno));
 146                 /* continue anyway with the default (smaller) buffer */
 147         }
 148 #endif /* CONFIG_LIBNL20 */
 149
 150         nl_socket_set_nonblocking(*handle);
 151         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 152                                  eloop_data, *handle);
 153         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 154 }
 155
 156
 157 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 158 {
 159         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 160         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 161         nl_destroy_handles(handle);
 162 }
 163
 164
 165 static void nl80211_global_deinit(void *priv);
 166 static void nl80211_check_global(struct nl80211_global *global);
 167
 168 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 169 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 170                                             struct hostapd_freq_params *freq);
 171
 172 static int
 173 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 174                                    const u8 *set_addr, int first,
 175                                    const char *driver_params);
 176 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 177                                   unsigned int freq, unsigned int wait,
 178                                   const u8 *buf, size_t buf_len, u64 *cookie,
 179                                   int no_cck, int no_ack, int offchanok);
 180 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 181                                                int report);
 182
 183 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 184 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 185 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 186
 187 static int nl80211_set_channel(struct i802_bss *bss,
 188                                struct hostapd_freq_params *freq, int set_chan);
 189 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 190                                      int ifindex, int disabled);
 191
 192 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 193                               int reset_mode);
 194
 195 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 196 static int nl80211_set_param(void *priv, const char *param);
 197
 198
 199 /* Converts nl80211_chan_width to a common format */
 200 enum chan_width convert2width(int width)
 201 {
 202         switch (width) {
 203         case NL80211_CHAN_WIDTH_20_NOHT:
 204                 return CHAN_WIDTH_20_NOHT;
 205         case NL80211_CHAN_WIDTH_20:
 206                 return CHAN_WIDTH_20;
 207         case NL80211_CHAN_WIDTH_40:
 208                 return CHAN_WIDTH_40;
 209         case NL80211_CHAN_WIDTH_80:
 210                 return CHAN_WIDTH_80;
 211         case NL80211_CHAN_WIDTH_80P80:
 212                 return CHAN_WIDTH_80P80;
 213         case NL80211_CHAN_WIDTH_160:
 214                 return CHAN_WIDTH_160;
 215         }
 216         return CHAN_WIDTH_UNKNOWN;
 217 }
 218
 219
 220 int is_ap_interface(enum nl80211_iftype nlmode)
 221 {
 222         return nlmode == NL80211_IFTYPE_AP ||
 223                 nlmode == NL80211_IFTYPE_P2P_GO;
 224 }
 225
 226
 227 int is_sta_interface(enum nl80211_iftype nlmode)
 228 {
 229         return nlmode == NL80211_IFTYPE_STATION ||
 230                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 231 }
 232
 233
 234 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 235 {
 236         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 237                 nlmode == NL80211_IFTYPE_P2P_GO;
 238 }
 239
 240
 241 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 242                                   int ifindex)
 243 {
 244         struct i802_bss *bss;
 245
 246         for (bss = drv->first_bss; bss; bss = bss->next) {
 247                 if (bss->ifindex == ifindex)
 248                         return bss;
 249         }
 250
 251         return NULL;
 252 }
 253
 254
 255 static int is_mesh_interface(enum nl80211_iftype nlmode)
 256 {
 257         return nlmode == NL80211_IFTYPE_MESH_POINT;
 258 }
 259
 260
 261 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 262 {
 263         if (drv->associated)
 264                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 265         drv->associated = 0;
 266         os_memset(drv->bssid, 0, ETH_ALEN);
 267 }
 268
 269
 270 /* nl80211 code */
 271 static int ack_handler(struct nl_msg *msg, void *arg)
 272 {
 273         int *err = arg;
 274         *err = 0;
 275         return NL_STOP;
 276 }
 277
 278 static int finish_handler(struct nl_msg *msg, void *arg)
 279 {
 280         int *ret = arg;
 281         *ret = 0;
 282         return NL_SKIP;
 283 }
 284
 285 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 286                          void *arg)
 287 {
 288         int *ret = arg;
 289         *ret = err->error;
 290         return NL_SKIP;
 291 }
 292
 293
 294 static int no_seq_check(struct nl_msg *msg, void *arg)
 295 {
 296         return NL_OK;
 297 }
 298
 299
 300 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 301 {
 302         /*
 303          * Clear nlmsg data, e.g., to make sure key material is not left in
 304          * heap memory for unnecessarily long time.
 305          */
 306         if (msg) {
 307                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 308                 void *data = nlmsg_data(hdr);
 309                 /*
 310                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 311                  * only libnl were to maintain a stable API.. Neither will work
 312                  * with all released versions, so just calculate the length
 313                  * here.
 314                  */
 315                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 316
 317                 os_memset(data, 0, len);
 318         }
 319 }
 320
 321
 322 static int send_and_recv(struct nl80211_global *global,
 323                          struct nl_handle *nl_handle, struct nl_msg *msg,
 324                          int (*valid_handler)(struct nl_msg *, void *),
 325                          void *valid_data)
 326 {
 327         struct nl_cb *cb;
 328         int err = -ENOMEM;
 329
 330         if (!msg)
 331                 return -ENOMEM;
 332
 333         cb = nl_cb_clone(global->nl_cb);
 334         if (!cb)
 335                 goto out;
 336
 337         err = nl_send_auto_complete(nl_handle, msg);
 338         if (err < 0)
 339                 goto out;
 340
 341         err = 1;
 342
 343         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 344         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 345         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 346
 347         if (valid_handler)
 348                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 349                           valid_handler, valid_data);
 350
 351         while (err > 0) {
 352                 int res = nl_recvmsgs(nl_handle, cb);
 353                 if (res < 0) {
 354                         wpa_printf(MSG_INFO,
 355                                    "nl80211: %s->nl_recvmsgs failed: %d",
 356                                    __func__, res);
 357                 }
 358         }
 359  out:
 360         nl_cb_put(cb);
 361         if (!valid_handler && valid_data == (void *) -1)
 362                 nl80211_nlmsg_clear(msg);
 363         nlmsg_free(msg);
 364         return err;
 365 }
 366
 367
 368 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 369                        struct nl_msg *msg,
 370                        int (*valid_handler)(struct nl_msg *, void *),
 371                        void *valid_data)
 372 {
 373         return send_and_recv(drv->global, drv->global->nl, msg,
 374                              valid_handler, valid_data);
 375 }
 376
 377
 378 struct family_data {
 379         const char *group;
 380         int id;
 381 };
 382
 383
 384 static int family_handler(struct nl_msg *msg, void *arg)
 385 {
 386         struct family_data *res = arg;
 387         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 388         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 389         struct nlattr *mcgrp;
 390         int i;
 391
 392         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 393                   genlmsg_attrlen(gnlh, 0), NULL);
 394         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 395                 return NL_SKIP;
 396
 397         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 398                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 399                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 400                           nla_len(mcgrp), NULL);
 401                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 402                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 403                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 404                                res->group,
 405                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 406                         continue;
 407                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 408                 break;
 409         };
 410
 411         return NL_SKIP;
 412 }
 413
 414
 415 static int nl_get_multicast_id(struct nl80211_global *global,
 416                                const char *family, const char *group)
 417 {
 418         struct nl_msg *msg;
 419         int ret;
 420         struct family_data res = { group, -ENOENT };
 421
 422         msg = nlmsg_alloc();
 423         if (!msg)
 424                 return -ENOMEM;
 425         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 426                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 427             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 428                 nlmsg_free(msg);
 429                 return -1;
 430         }
 431
 432         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 433         if (ret == 0)
 434                 ret = res.id;
 435         return ret;
 436 }
 437
 438
 439 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 440                    struct nl_msg *msg, int flags, uint8_t cmd)
 441 {
 442         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 443                            0, flags, cmd, 0);
 444 }
 445
 446
 447 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 448 {
 449         if (bss->wdev_id_set)
 450                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 451         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 452 }
 453
 454
 455 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 456 {
 457         struct nl_msg *msg;
 458
 459         msg = nlmsg_alloc();
 460         if (!msg)
 461                 return NULL;
 462
 463         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 464             nl80211_set_iface_id(msg, bss) < 0) {
 465                 nlmsg_free(msg);
 466                 return NULL;
 467         }
 468
 469         return msg;
 470 }
 471
 472
 473 static struct nl_msg *
 474 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 475                     int flags, uint8_t cmd)
 476 {
 477         struct nl_msg *msg;
 478
 479         msg = nlmsg_alloc();
 480         if (!msg)
 481                 return NULL;
 482
 483         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 484             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 485                 nlmsg_free(msg);
 486                 return NULL;
 487         }
 488
 489         return msg;
 490 }
 491
 492
 493 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 494                                 uint8_t cmd)
 495 {
 496         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 497 }
 498
 499
 500 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 501 {
 502         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 503 }
 504
 505
 506 struct wiphy_idx_data {
 507         int wiphy_idx;
 508         enum nl80211_iftype nlmode;
 509         u8 *macaddr;
 510 };
 511
 512
 513 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 514 {
 515         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 516         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 517         struct wiphy_idx_data *info = arg;
 518
 519         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 520                   genlmsg_attrlen(gnlh, 0), NULL);
 521
 522         if (tb[NL80211_ATTR_WIPHY])
 523                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 524
 525         if (tb[NL80211_ATTR_IFTYPE])
 526                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 527
 528         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 529                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 530                           ETH_ALEN);
 531
 532         return NL_SKIP;
 533 }
 534
 535
 536 int nl80211_get_wiphy_index(struct i802_bss *bss)
 537 {
 538         struct nl_msg *msg;
 539         struct wiphy_idx_data data = {
 540                 .wiphy_idx = -1,
 541                 .macaddr = NULL,
 542         };
 543
 544         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 545                 return -1;
 546
 547         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 548                 return data.wiphy_idx;
 549         return -1;
 550 }
 551
 552
 553 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 554 {
 555         struct nl_msg *msg;
 556         struct wiphy_idx_data data = {
 557                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 558                 .macaddr = NULL,
 559         };
 560
 561         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 562                 return NL80211_IFTYPE_UNSPECIFIED;
 563
 564         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 565                 return data.nlmode;
 566         return NL80211_IFTYPE_UNSPECIFIED;
 567 }
 568
 569
 570 static int nl80211_get_macaddr(struct i802_bss *bss)
 571 {
 572         struct nl_msg *msg;
 573         struct wiphy_idx_data data = {
 574                 .macaddr = bss->addr,
 575         };
 576
 577         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 578                 return -1;
 579
 580         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 581 }
 582
 583
 584 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 585                                     struct nl80211_wiphy_data *w)
 586 {
 587         struct nl_msg *msg;
 588         int ret;
 589
 590         msg = nlmsg_alloc();
 591         if (!msg)
 592                 return -1;
 593
 594         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 595             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 596                 nlmsg_free(msg);
 597                 return -1;
 598         }
 599
 600         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 601         if (ret) {
 602                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 603                            "failed: ret=%d (%s)",
 604                            ret, strerror(-ret));
 605         }
 606         return ret;
 607 }
 608
 609
 610 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 611 {
 612         struct nl80211_wiphy_data *w = eloop_ctx;
 613         int res;
 614
 615         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 616
 617         res = nl_recvmsgs(handle, w->nl_cb);
 618         if (res < 0) {
 619                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 620                            __func__, res);
 621         }
 622 }
 623
 624
 625 static int process_beacon_event(struct nl_msg *msg, void *arg)
 626 {
 627         struct nl80211_wiphy_data *w = arg;
 628         struct wpa_driver_nl80211_data *drv;
 629         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 630         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 631         union wpa_event_data event;
 632
 633         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 634                   genlmsg_attrlen(gnlh, 0), NULL);
 635
 636         if (gnlh->cmd != NL80211_CMD_FRAME) {
 637                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 638                            gnlh->cmd);
 639                 return NL_SKIP;
 640         }
 641
 642         if (!tb[NL80211_ATTR_FRAME])
 643                 return NL_SKIP;
 644
 645         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 646                          wiphy_list) {
 647                 os_memset(&event, 0, sizeof(event));
 648                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 649                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 650                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 651         }
 652
 653         return NL_SKIP;
 654 }
 655
 656
 657 static struct nl80211_wiphy_data *
 658 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 659 {
 660         static DEFINE_DL_LIST(nl80211_wiphys);
 661         struct nl80211_wiphy_data *w;
 662         int wiphy_idx, found = 0;
 663         struct i802_bss *tmp_bss;
 664
 665         if (bss->wiphy_data != NULL)
 666                 return bss->wiphy_data;
 667
 668         wiphy_idx = nl80211_get_wiphy_index(bss);
 669
 670         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 671                 if (w->wiphy_idx == wiphy_idx)
 672                         goto add;
 673         }
 674
 675         /* alloc new one */
 676         w = os_zalloc(sizeof(*w));
 677         if (w == NULL)
 678                 return NULL;
 679         w->wiphy_idx = wiphy_idx;
 680         dl_list_init(&w->bsss);
 681         dl_list_init(&w->drvs);
 682
 683         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 684         if (!w->nl_cb) {
 685                 os_free(w);
 686                 return NULL;
 687         }
 688         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 689         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 690                   w);
 691
 692         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 693                                          "wiphy beacons");
 694         if (w->nl_beacons == NULL) {
 695                 os_free(w);
 696                 return NULL;
 697         }
 698
 699         if (nl80211_register_beacons(bss->drv, w)) {
 700                 nl_destroy_handles(&w->nl_beacons);
 701                 os_free(w);
 702                 return NULL;
 703         }
 704
 705         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 706
 707         dl_list_add(&nl80211_wiphys, &w->list);
 708
 709 add:
 710         /* drv entry for this bss already there? */
 711         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 712                 if (tmp_bss->drv == bss->drv) {
 713                         found = 1;
 714                         break;
 715                 }
 716         }
 717         /* if not add it */
 718         if (!found)
 719                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 720
 721         dl_list_add(&w->bsss, &bss->wiphy_list);
 722         bss->wiphy_data = w;
 723         return w;
 724 }
 725
 726
 727 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 728 {
 729         struct nl80211_wiphy_data *w = bss->wiphy_data;
 730         struct i802_bss *tmp_bss;
 731         int found = 0;
 732
 733         if (w == NULL)
 734                 return;
 735         bss->wiphy_data = NULL;
 736         dl_list_del(&bss->wiphy_list);
 737
 738         /* still any for this drv present? */
 739         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 740                 if (tmp_bss->drv == bss->drv) {
 741                         found = 1;
 742                         break;
 743                 }
 744         }
 745         /* if not remove it */
 746         if (!found)
 747                 dl_list_del(&bss->drv->wiphy_list);
 748
 749         if (!dl_list_empty(&w->bsss))
 750                 return;
 751
 752         nl80211_destroy_eloop_handle(&w->nl_beacons);
 753
 754         nl_cb_put(w->nl_cb);
 755         dl_list_del(&w->list);
 756         os_free(w);
 757 }
 758
 759
 760 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 761 {
 762         struct i802_bss *bss = priv;
 763         struct wpa_driver_nl80211_data *drv = bss->drv;
 764         if (!drv->associated)
 765                 return -1;
 766         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 767         return 0;
 768 }
 769
 770
 771 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 772 {
 773         struct i802_bss *bss = priv;
 774         struct wpa_driver_nl80211_data *drv = bss->drv;
 775         if (!drv->associated)
 776                 return -1;
 777         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 778         return drv->ssid_len;
 779 }
 780
 781
 782 static void wpa_driver_nl80211_event_newlink(
 783         struct wpa_driver_nl80211_data *drv, const char *ifname)
 784 {
 785         union wpa_event_data event;
 786
 787         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 788                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 789                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 790                                    drv->first_bss->ifname);
 791                         return;
 792                 }
 793                 if (!drv->if_removed)
 794                         return;
 795                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 796                            drv->first_bss->ifname);
 797                 drv->if_removed = 0;
 798         }
 799
 800         os_memset(&event, 0, sizeof(event));
 801         os_strlcpy(event.interface_status.ifname, ifname,
 802                    sizeof(event.interface_status.ifname));
 803         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 804         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 805 }
 806
 807
 808 static void wpa_driver_nl80211_event_dellink(
 809         struct wpa_driver_nl80211_data *drv, const char *ifname)
 810 {
 811         union wpa_event_data event;
 812
 813         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 814                 if (drv->if_removed) {
 815                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 816                                    ifname);
 817                         return;
 818                 }
 819                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 820                            ifname);
 821                 drv->if_removed = 1;
 822         } else {
 823                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 824                            ifname);
 825         }
 826
 827         os_memset(&event, 0, sizeof(event));
 828         os_strlcpy(event.interface_status.ifname, ifname,
 829                    sizeof(event.interface_status.ifname));
 830         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 831         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 832 }
 833
 834
 835 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 836                                          u8 *buf, size_t len)
 837 {
 838         int attrlen, rta_len;
 839         struct rtattr *attr;
 840
 841         attrlen = len;
 842         attr = (struct rtattr *) buf;
 843
 844         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 845         while (RTA_OK(attr, attrlen)) {
 846                 if (attr->rta_type == IFLA_IFNAME) {
 847                         if (os_strcmp(((char *) attr) + rta_len,
 848                                       drv->first_bss->ifname) == 0)
 849                                 return 1;
 850                         else
 851                                 break;
 852                 }
 853                 attr = RTA_NEXT(attr, attrlen);
 854         }
 855
 856         return 0;
 857 }
 858
 859
 860 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 861                                           int ifindex, u8 *buf, size_t len)
 862 {
 863         if (drv->ifindex == ifindex)
 864                 return 1;
 865
 866         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 867                 nl80211_check_global(drv->global);
 868                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 869                            "interface");
 870                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 871                 return 1;
 872         }
 873
 874         return 0;
 875 }
 876
 877
 878 static struct wpa_driver_nl80211_data *
 879 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 880 {
 881         struct wpa_driver_nl80211_data *drv;
 882         dl_list_for_each(drv, &global->interfaces,
 883                          struct wpa_driver_nl80211_data, list) {
 884                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 885                     have_ifidx(drv, idx))
 886                         return drv;
 887         }
 888         return NULL;
 889 }
 890
 891
 892 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 893                                                  struct ifinfomsg *ifi,
 894                                                  u8 *buf, size_t len)
 895 {
 896         struct nl80211_global *global = ctx;
 897         struct wpa_driver_nl80211_data *drv;
 898         int attrlen;
 899         struct rtattr *attr;
 900         u32 brid = 0;
 901         char namebuf[IFNAMSIZ];
 902         char ifname[IFNAMSIZ + 1];
 903         char extra[100], *pos, *end;
 904
 905         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 906         if (!drv) {
 907                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 908                            ifi->ifi_index);
 909                 return;
 910         }
 911
 912         extra[0] = '\0';
 913         pos = extra;
 914         end = pos + sizeof(extra);
 915         ifname[0] = '\0';
 916
 917         attrlen = len;
 918         attr = (struct rtattr *) buf;
 919         while (RTA_OK(attr, attrlen)) {
 920                 switch (attr->rta_type) {
 921                 case IFLA_IFNAME:
 922                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 923                                 break;
 924                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 925                         ifname[RTA_PAYLOAD(attr)] = '\0';
 926                         break;
 927                 case IFLA_MASTER:
 928                         brid = nla_get_u32((struct nlattr *) attr);
 929                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 930                         break;
 931                 case IFLA_WIRELESS:
 932                         pos += os_snprintf(pos, end - pos, " wext");
 933                         break;
 934                 case IFLA_OPERSTATE:
 935                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 936                                            nla_get_u32((struct nlattr *) attr));
 937                         break;
 938                 case IFLA_LINKMODE:
 939                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 940                                            nla_get_u32((struct nlattr *) attr));
 941                         break;
 942                 }
 943                 attr = RTA_NEXT(attr, attrlen);
 944         }
 945         extra[sizeof(extra) - 1] = '\0';
 946
 947         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 948                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 949                    ifi->ifi_flags,
 950                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 951                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 952                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 953                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 954
 955         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 956                 namebuf[0] = '\0';
 957                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 958                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) {
 959                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 960                                    "event since interface %s is up", namebuf);
 961                         drv->ignore_if_down_event = 0;
 962                         return;
 963                 }
 964                 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)",
 965                            namebuf, ifname);
 966                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 967                         wpa_printf(MSG_DEBUG,
 968                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 969                                    drv->first_bss->ifname);
 970                 } else if (drv->ignore_if_down_event) {
 971                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 972                                    "event generated by mode change");
 973                         drv->ignore_if_down_event = 0;
 974                 } else {
 975                         drv->if_disabled = 1;
 976                         wpa_supplicant_event(drv->ctx,
 977                                              EVENT_INTERFACE_DISABLED, NULL);
 978
 979                         /*
 980                          * Try to get drv again, since it may be removed as
 981                          * part of the EVENT_INTERFACE_DISABLED handling for
 982                          * dynamic interfaces
 983                          */
 984                         drv = nl80211_find_drv(global, ifi->ifi_index,
 985                                                buf, len);
 986                         if (!drv)
 987                                 return;
 988                 }
 989         }
 990
 991         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 992                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 993                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
 994                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 995                                    "event since interface %s is down",
 996                                    namebuf);
 997                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 998                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 999                                    "event since interface %s does not exist",
1000                                    drv->first_bss->ifname);
1001                 } else if (drv->if_removed) {
1002                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1003                                    "event since interface %s is marked "
1004                                    "removed", drv->first_bss->ifname);
1005                 } else {
1006                         struct i802_bss *bss;
1007                         u8 addr[ETH_ALEN];
1008
1009                         /* Re-read MAC address as it may have changed */
1010                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1011                         if (bss &&
1012                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1013                                                bss->ifname, addr) < 0) {
1014                                 wpa_printf(MSG_DEBUG,
1015                                            "nl80211: %s: failed to re-read MAC address",
1016                                            bss->ifname);
1017                         } else if (bss &&
1018                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1019                                 wpa_printf(MSG_DEBUG,
1020                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1021                                            MACSTR " to " MACSTR,
1022                                            ifi->ifi_index, bss->ifname,
1023                                            MAC2STR(bss->addr),
1024                                            MAC2STR(addr));
1025                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1026                         }
1027
1028                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1029                         drv->if_disabled = 0;
1030                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1031                                              NULL);
1032                 }
1033         }
1034
1035         /*
1036          * Some drivers send the association event before the operup event--in
1037          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1038          * fails. This will hit us when wpa_supplicant does not need to do
1039          * IEEE 802.1X authentication
1040          */
1041         if (drv->operstate == 1 &&
1042             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1043             !(ifi->ifi_flags & IFF_RUNNING)) {
1044                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1045                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1046                                        -1, IF_OPER_UP);
1047         }
1048
1049         if (ifname[0])
1050                 wpa_driver_nl80211_event_newlink(drv, ifname);
1051
1052         if (ifi->ifi_family == AF_BRIDGE && brid) {
1053                 struct i802_bss *bss;
1054
1055                 /* device has been added to bridge */
1056                 if (!if_indextoname(brid, namebuf)) {
1057                         wpa_printf(MSG_DEBUG,
1058                                    "nl80211: Could not find bridge ifname for ifindex %u",
1059                                    brid);
1060                         return;
1061                 }
1062                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1063                            brid, namebuf);
1064                 add_ifidx(drv, brid);
1065
1066                 for (bss = drv->first_bss; bss; bss = bss->next) {
1067                         if (os_strcmp(ifname, bss->ifname) == 0) {
1068                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1069                                 break;
1070                         }
1071                 }
1072         }
1073 }
1074
1075
1076 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1077                                                  struct ifinfomsg *ifi,
1078                                                  u8 *buf, size_t len)
1079 {
1080         struct nl80211_global *global = ctx;
1081         struct wpa_driver_nl80211_data *drv;
1082         int attrlen;
1083         struct rtattr *attr;
1084         u32 brid = 0;
1085         char ifname[IFNAMSIZ + 1];
1086         char extra[100], *pos, *end;
1087
1088         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1089         if (!drv) {
1090                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1091                            ifi->ifi_index);
1092                 return;
1093         }
1094
1095         extra[0] = '\0';
1096         pos = extra;
1097         end = pos + sizeof(extra);
1098         ifname[0] = '\0';
1099
1100         attrlen = len;
1101         attr = (struct rtattr *) buf;
1102         while (RTA_OK(attr, attrlen)) {
1103                 switch (attr->rta_type) {
1104                 case IFLA_IFNAME:
1105                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1106                                 break;
1107                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1108                         ifname[RTA_PAYLOAD(attr)] = '\0';
1109                         break;
1110                 case IFLA_MASTER:
1111                         brid = nla_get_u32((struct nlattr *) attr);
1112                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1113                         break;
1114                 case IFLA_OPERSTATE:
1115                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1116                                            nla_get_u32((struct nlattr *) attr));
1117                         break;
1118                 case IFLA_LINKMODE:
1119                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1120                                            nla_get_u32((struct nlattr *) attr));
1121                         break;
1122                 }
1123                 attr = RTA_NEXT(attr, attrlen);
1124         }
1125         extra[sizeof(extra) - 1] = '\0';
1126
1127         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1128                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1129                    ifi->ifi_flags,
1130                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1131                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1132                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1133                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1134
1135         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1136                 wpa_driver_nl80211_event_dellink(drv, ifname);
1137
1138         if (ifi->ifi_family == AF_BRIDGE && brid) {
1139                 /* device has been removed from bridge */
1140                 char namebuf[IFNAMSIZ];
1141
1142                 if (!if_indextoname(brid, namebuf)) {
1143                         wpa_printf(MSG_DEBUG,
1144                                    "nl80211: Could not find bridge ifname for ifindex %u",
1145                                    brid);
1146                 } else {
1147                         wpa_printf(MSG_DEBUG,
1148                                    "nl80211: Remove ifindex %u for bridge %s",
1149                                    brid, namebuf);
1150                 }
1151                 del_ifidx(drv, brid);
1152         }
1153 }
1154
1155
1156 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1157 {
1158         struct nl_msg *msg;
1159         int ret;
1160         struct nl80211_bss_info_arg arg;
1161
1162         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1163         os_memset(&arg, 0, sizeof(arg));
1164         arg.drv = drv;
1165         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1166         if (ret == 0) {
1167                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1168                         arg.ibss_freq : arg.assoc_freq;
1169                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1170                            "associated BSS from scan results: %u MHz", freq);
1171                 if (freq)
1172                         drv->assoc_freq = freq;
1173                 return drv->assoc_freq;
1174         }
1175         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1176                    "(%s)", ret, strerror(-ret));
1177         return drv->assoc_freq;
1178 }
1179
1180
1181 static int get_link_signal(struct nl_msg *msg, void *arg)
1182 {
1183         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1184         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1185         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1186         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1187                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1188                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1189                 [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = { .type = NLA_U8 },
1190         };
1191         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1192         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1193                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1194                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1195                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1196                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1197         };
1198         struct wpa_signal_info *sig_change = arg;
1199
1200         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1201                   genlmsg_attrlen(gnlh, 0), NULL);
1202         if (!tb[NL80211_ATTR_STA_INFO] ||
1203             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1204                              tb[NL80211_ATTR_STA_INFO], policy))
1205                 return NL_SKIP;
1206         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1207                 return NL_SKIP;
1208
1209         sig_change->current_signal =
1210                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1211
1212         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1213                 sig_change->avg_signal =
1214                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1215         else
1216                 sig_change->avg_signal = 0;
1217
1218         if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG])
1219                 sig_change->avg_beacon_signal =
1220                         (s8)
1221                         nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]);
1222         else
1223                 sig_change->avg_beacon_signal = 0;
1224
1225         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1226                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1227                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1228                                      rate_policy)) {
1229                         sig_change->current_txrate = 0;
1230                 } else {
1231                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1232                                 sig_change->current_txrate =
1233                                         nla_get_u16(rinfo[
1234                                              NL80211_RATE_INFO_BITRATE]) * 100;
1235                         }
1236                 }
1237         }
1238
1239         return NL_SKIP;
1240 }
1241
1242
1243 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1244                             struct wpa_signal_info *sig)
1245 {
1246         struct nl_msg *msg;
1247
1248         sig->current_signal = -9999;
1249         sig->current_txrate = 0;
1250
1251         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1252             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1253                 nlmsg_free(msg);
1254                 return -ENOBUFS;
1255         }
1256
1257         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1258 }
1259
1260
1261 static int get_link_noise(struct nl_msg *msg, void *arg)
1262 {
1263         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1264         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1265         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1266         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1267                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1268                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1269         };
1270         struct wpa_signal_info *sig_change = arg;
1271
1272         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1273                   genlmsg_attrlen(gnlh, 0), NULL);
1274
1275         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1276                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1277                 return NL_SKIP;
1278         }
1279
1280         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1281                              tb[NL80211_ATTR_SURVEY_INFO],
1282                              survey_policy)) {
1283                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1284                            "attributes!");
1285                 return NL_SKIP;
1286         }
1287
1288         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1289                 return NL_SKIP;
1290
1291         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1292             sig_change->frequency)
1293                 return NL_SKIP;
1294
1295         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1296                 return NL_SKIP;
1297
1298         sig_change->current_noise =
1299                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1300
1301         return NL_SKIP;
1302 }
1303
1304
1305 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1306                            struct wpa_signal_info *sig_change)
1307 {
1308         struct nl_msg *msg;
1309
1310         sig_change->current_noise = 9999;
1311         sig_change->frequency = drv->assoc_freq;
1312
1313         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1314         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1315 }
1316
1317
1318 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1319                                              void *handle)
1320 {
1321         struct nl_cb *cb = eloop_ctx;
1322         int res;
1323
1324         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1325
1326         res = nl_recvmsgs(handle, cb);
1327         if (res < 0) {
1328                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1329                            __func__, res);
1330         }
1331 }
1332
1333
1334 /**
1335  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1336  * @priv: driver_nl80211 private data
1337  * @alpha2_arg: country to which to switch to
1338  * Returns: 0 on success, -1 on failure
1339  *
1340  * This asks nl80211 to set the regulatory domain for given
1341  * country ISO / IEC alpha2.
1342  */
1343 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1344 {
1345         struct i802_bss *bss = priv;
1346         struct wpa_driver_nl80211_data *drv = bss->drv;
1347         char alpha2[3];
1348         struct nl_msg *msg;
1349
1350         msg = nlmsg_alloc();
1351         if (!msg)
1352                 return -ENOMEM;
1353
1354         alpha2[0] = alpha2_arg[0];
1355         alpha2[1] = alpha2_arg[1];
1356         alpha2[2] = '\0';
1357
1358         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1359             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1360                 nlmsg_free(msg);
1361                 return -EINVAL;
1362         }
1363         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1364                 return -EINVAL;
1365         return 0;
1366 }
1367
1368
1369 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1370 {
1371         char *alpha2 = arg;
1372         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1373         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1374
1375         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1376                   genlmsg_attrlen(gnlh, 0), NULL);
1377         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1378                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1379                 return NL_SKIP;
1380         }
1381         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1382         return NL_SKIP;
1383 }
1384
1385
1386 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1387 {
1388         struct i802_bss *bss = priv;
1389         struct wpa_driver_nl80211_data *drv = bss->drv;
1390         struct nl_msg *msg;
1391         int ret;
1392
1393         msg = nlmsg_alloc();
1394         if (!msg)
1395                 return -ENOMEM;
1396
1397         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1398         alpha2[0] = '\0';
1399         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1400         if (!alpha2[0])
1401                 ret = -1;
1402
1403         return ret;
1404 }
1405
1406
1407 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1408 {
1409         int ret;
1410
1411         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1412         if (global->nl_cb == NULL) {
1413                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1414                            "callbacks");
1415                 return -1;
1416         }
1417
1418         global->nl = nl_create_handle(global->nl_cb, "nl");
1419         if (global->nl == NULL)
1420                 goto err;
1421
1422         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1423         if (global->nl80211_id < 0) {
1424                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1425                            "found");
1426                 goto err;
1427         }
1428
1429         global->nl_event = nl_create_handle(global->nl_cb, "event");
1430         if (global->nl_event == NULL)
1431                 goto err;
1432
1433         ret = nl_get_multicast_id(global, "nl80211", "scan");
1434         if (ret >= 0)
1435                 ret = nl_socket_add_membership(global->nl_event, ret);
1436         if (ret < 0) {
1437                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1438                            "membership for scan events: %d (%s)",
1439                            ret, strerror(-ret));
1440                 goto err;
1441         }
1442
1443         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1444         if (ret >= 0)
1445                 ret = nl_socket_add_membership(global->nl_event, ret);
1446         if (ret < 0) {
1447                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1448                            "membership for mlme events: %d (%s)",
1449                            ret, strerror(-ret));
1450                 goto err;
1451         }
1452
1453         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1454         if (ret >= 0)
1455                 ret = nl_socket_add_membership(global->nl_event, ret);
1456         if (ret < 0) {
1457                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1458                            "membership for regulatory events: %d (%s)",
1459                            ret, strerror(-ret));
1460                 /* Continue without regulatory events */
1461         }
1462
1463         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1464         if (ret >= 0)
1465                 ret = nl_socket_add_membership(global->nl_event, ret);
1466         if (ret < 0) {
1467                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1468                            "membership for vendor events: %d (%s)",
1469                            ret, strerror(-ret));
1470                 /* Continue without vendor events */
1471         }
1472
1473         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1474                   no_seq_check, NULL);
1475         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1476                   process_global_event, global);
1477
1478         nl80211_register_eloop_read(&global->nl_event,
1479                                     wpa_driver_nl80211_event_receive,
1480                                     global->nl_cb);
1481
1482         return 0;
1483
1484 err:
1485         nl_destroy_handles(&global->nl_event);
1486         nl_destroy_handles(&global->nl);
1487         nl_cb_put(global->nl_cb);
1488         global->nl_cb = NULL;
1489         return -1;
1490 }
1491
1492
1493 static void nl80211_check_global(struct nl80211_global *global)
1494 {
1495         struct nl_handle *handle;
1496         const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL };
1497         int ret;
1498         unsigned int i;
1499
1500         /*
1501          * Try to re-add memberships to handle case of cfg80211 getting reloaded
1502          * and all registration having been cleared.
1503          */
1504         handle = (void *) (((intptr_t) global->nl_event) ^
1505                            ELOOP_SOCKET_INVALID);
1506
1507         for (i = 0; groups[i]; i++) {
1508                 ret = nl_get_multicast_id(global, "nl80211", groups[i]);
1509                 if (ret >= 0)
1510                         ret = nl_socket_add_membership(handle, ret);
1511                 if (ret < 0) {
1512                         wpa_printf(MSG_INFO,
1513                                    "nl80211: Could not re-add multicast membership for %s events: %d (%s)",
1514                                    groups[i], ret, strerror(-ret));
1515                 }
1516         }
1517 }
1518
1519
1520 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1521 {
1522         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1523         /*
1524          * This may be for any interface; use ifdown event to disable
1525          * interface.
1526          */
1527 }
1528
1529
1530 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1531 {
1532         struct wpa_driver_nl80211_data *drv = ctx;
1533         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1534         if (i802_set_iface_flags(drv->first_bss, 1)) {
1535                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1536                            "after rfkill unblock");
1537                 return;
1538         }
1539         /* rtnetlink ifup handler will report interface as enabled */
1540 }
1541
1542
1543 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1544                                                       void *eloop_ctx,
1545                                                       void *handle)
1546 {
1547         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1548         u8 data[2048];
1549         struct msghdr msg;
1550         struct iovec entry;
1551         u8 control[512];
1552         struct cmsghdr *cmsg;
1553         int res, found_ee = 0, found_wifi = 0, acked = 0;
1554         union wpa_event_data event;
1555
1556         memset(&msg, 0, sizeof(msg));
1557         msg.msg_iov = &entry;
1558         msg.msg_iovlen = 1;
1559         entry.iov_base = data;
1560         entry.iov_len = sizeof(data);
1561         msg.msg_control = &control;
1562         msg.msg_controllen = sizeof(control);
1563
1564         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1565         /* if error or not fitting 802.3 header, return */
1566         if (res < 14)
1567                 return;
1568
1569         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1570         {
1571                 if (cmsg->cmsg_level == SOL_SOCKET &&
1572                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1573                         int *ack;
1574
1575                         found_wifi = 1;
1576                         ack = (void *)CMSG_DATA(cmsg);
1577                         acked = *ack;
1578                 }
1579
1580                 if (cmsg->cmsg_level == SOL_PACKET &&
1581                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1582                         struct sock_extended_err *err =
1583                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1584
1585                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1586                                 found_ee = 1;
1587                 }
1588         }
1589
1590         if (!found_ee || !found_wifi)
1591                 return;
1592
1593         memset(&event, 0, sizeof(event));
1594         event.eapol_tx_status.dst = data;
1595         event.eapol_tx_status.data = data + 14;
1596         event.eapol_tx_status.data_len = res - 14;
1597         event.eapol_tx_status.ack = acked;
1598         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1599 }
1600
1601
1602 static int nl80211_init_bss(struct i802_bss *bss)
1603 {
1604         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1605         if (!bss->nl_cb)
1606                 return -1;
1607
1608         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1609                   no_seq_check, NULL);
1610         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1611                   process_bss_event, bss);
1612
1613         return 0;
1614 }
1615
1616
1617 static void nl80211_destroy_bss(struct i802_bss *bss)
1618 {
1619         nl_cb_put(bss->nl_cb);
1620         bss->nl_cb = NULL;
1621 }
1622
1623
1624 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1625                                           void *global_priv, int hostapd,
1626                                           const u8 *set_addr,
1627                                           const char *driver_params)
1628 {
1629         struct wpa_driver_nl80211_data *drv;
1630         struct rfkill_config *rcfg;
1631         struct i802_bss *bss;
1632
1633         if (global_priv == NULL)
1634                 return NULL;
1635         drv = os_zalloc(sizeof(*drv));
1636         if (drv == NULL)
1637                 return NULL;
1638         drv->global = global_priv;
1639         drv->ctx = ctx;
1640         drv->hostapd = !!hostapd;
1641         drv->eapol_sock = -1;
1642
1643         /*
1644          * There is no driver capability flag for this, so assume it is
1645          * supported and disable this on first attempt to use if the driver
1646          * rejects the command due to missing support.
1647          */
1648         drv->set_rekey_offload = 1;
1649
1650         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1651         drv->if_indices = drv->default_if_indices;
1652
1653         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1654         if (!drv->first_bss) {
1655                 os_free(drv);
1656                 return NULL;
1657         }
1658         bss = drv->first_bss;
1659         bss->drv = drv;
1660         bss->ctx = ctx;
1661
1662         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1663         drv->monitor_ifidx = -1;
1664         drv->monitor_sock = -1;
1665         drv->eapol_tx_sock = -1;
1666         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1667
1668         if (nl80211_init_bss(bss))
1669                 goto failed;
1670
1671         rcfg = os_zalloc(sizeof(*rcfg));
1672         if (rcfg == NULL)
1673                 goto failed;
1674         rcfg->ctx = drv;
1675         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1676         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1677         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1678         drv->rfkill = rfkill_init(rcfg);
1679         if (drv->rfkill == NULL) {
1680                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1681                 os_free(rcfg);
1682         }
1683
1684         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1685                 drv->start_iface_up = 1;
1686
1687         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1688                 goto failed;
1689
1690         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1691         if (drv->eapol_tx_sock < 0)
1692                 goto failed;
1693
1694         if (drv->data_tx_status) {
1695                 int enabled = 1;
1696
1697                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1698                                &enabled, sizeof(enabled)) < 0) {
1699                         wpa_printf(MSG_DEBUG,
1700                                 "nl80211: wifi status sockopt failed\n");
1701                         drv->data_tx_status = 0;
1702                         if (!drv->use_monitor)
1703                                 drv->capa.flags &=
1704                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1705                 } else {
1706                         eloop_register_read_sock(drv->eapol_tx_sock,
1707                                 wpa_driver_nl80211_handle_eapol_tx_status,
1708                                 drv, NULL);
1709                 }
1710         }
1711
1712         if (drv->global) {
1713                 nl80211_check_global(drv->global);
1714                 dl_list_add(&drv->global->interfaces, &drv->list);
1715                 drv->in_interface_list = 1;
1716         }
1717
1718         return bss;
1719
1720 failed:
1721         wpa_driver_nl80211_deinit(bss);
1722         return NULL;
1723 }
1724
1725
1726 /**
1727  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1728  * @ctx: context to be used when calling wpa_supplicant functions,
1729  * e.g., wpa_supplicant_event()
1730  * @ifname: interface name, e.g., wlan0
1731  * @global_priv: private driver global data from global_init()
1732  * Returns: Pointer to private data, %NULL on failure
1733  */
1734 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1735                                       void *global_priv)
1736 {
1737         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1738                                            NULL);
1739 }
1740
1741
1742 static int nl80211_register_frame(struct i802_bss *bss,
1743                                   struct nl_handle *nl_handle,
1744                                   u16 type, const u8 *match, size_t match_len)
1745 {
1746         struct wpa_driver_nl80211_data *drv = bss->drv;
1747         struct nl_msg *msg;
1748         int ret;
1749         char buf[30];
1750
1751         buf[0] = '\0';
1752         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1753         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1754                    type, fc2str(type), nl_handle, buf);
1755
1756         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1757             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1758             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1759                 nlmsg_free(msg);
1760                 return -1;
1761         }
1762
1763         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1764         if (ret) {
1765                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1766                            "failed (type=%u): ret=%d (%s)",
1767                            type, ret, strerror(-ret));
1768                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1769                             match, match_len);
1770         }
1771         return ret;
1772 }
1773
1774
1775 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1776 {
1777         if (bss->nl_mgmt) {
1778                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1779                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1780                 return -1;
1781         }
1782
1783         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1784         if (bss->nl_mgmt == NULL)
1785                 return -1;
1786
1787         return 0;
1788 }
1789
1790
1791 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1792 {
1793         nl80211_register_eloop_read(&bss->nl_mgmt,
1794                                     wpa_driver_nl80211_event_receive,
1795                                     bss->nl_cb);
1796 }
1797
1798
1799 static int nl80211_register_action_frame(struct i802_bss *bss,
1800                                          const u8 *match, size_t match_len)
1801 {
1802         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1803         return nl80211_register_frame(bss, bss->nl_mgmt,
1804                                       type, match, match_len);
1805 }
1806
1807
1808 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1809 {
1810         struct wpa_driver_nl80211_data *drv = bss->drv;
1811         int ret = 0;
1812
1813         if (nl80211_alloc_mgmt_handle(bss))
1814                 return -1;
1815         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1816                    "handle %p", bss->nl_mgmt);
1817
1818         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1819                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1820
1821                 /* register for any AUTH message */
1822                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1823         }
1824
1825 #ifdef CONFIG_INTERWORKING
1826         /* QoS Map Configure */
1827         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1828                 ret = -1;
1829 #endif /* CONFIG_INTERWORKING */
1830 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1831         /* GAS Initial Request */
1832         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1833                 ret = -1;
1834         /* GAS Initial Response */
1835         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1836                 ret = -1;
1837         /* GAS Comeback Request */
1838         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1839                 ret = -1;
1840         /* GAS Comeback Response */
1841         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1842                 ret = -1;
1843         /* Protected GAS Initial Request */
1844         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1845                 ret = -1;
1846         /* Protected GAS Initial Response */
1847         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1848                 ret = -1;
1849         /* Protected GAS Comeback Request */
1850         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1851                 ret = -1;
1852         /* Protected GAS Comeback Response */
1853         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1854                 ret = -1;
1855 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1856 #ifdef CONFIG_P2P
1857         /* P2P Public Action */
1858         if (nl80211_register_action_frame(bss,
1859                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1860                                           6) < 0)
1861                 ret = -1;
1862         /* P2P Action */
1863         if (nl80211_register_action_frame(bss,
1864                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1865                                           5) < 0)
1866                 ret = -1;
1867 #endif /* CONFIG_P2P */
1868 #ifdef CONFIG_IEEE80211W
1869         /* SA Query Response */
1870         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1871                 ret = -1;
1872 #endif /* CONFIG_IEEE80211W */
1873 #ifdef CONFIG_TDLS
1874         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1875                 /* TDLS Discovery Response */
1876                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1877                     0)
1878                         ret = -1;
1879         }
1880 #endif /* CONFIG_TDLS */
1881 #ifdef CONFIG_FST
1882         /* FST Action frames */
1883         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
1884                 ret = -1;
1885 #endif /* CONFIG_FST */
1886
1887         /* FT Action frames */
1888         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1889                 ret = -1;
1890         else
1891                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1892                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1893
1894         /* WNM - BSS Transition Management Request */
1895         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1896                 ret = -1;
1897         /* WNM-Sleep Mode Response */
1898         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1899                 ret = -1;
1900
1901 #ifdef CONFIG_HS20
1902         /* WNM-Notification */
1903         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1904                 ret = -1;
1905 #endif /* CONFIG_HS20 */
1906
1907         /* WMM-AC ADDTS Response */
1908         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1909                 ret = -1;
1910
1911         /* WMM-AC DELTS */
1912         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1913                 ret = -1;
1914
1915         /* Radio Measurement - Neighbor Report Response */
1916         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1917                 ret = -1;
1918
1919         /* Radio Measurement - Link Measurement Request */
1920         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1921             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1922                 ret = -1;
1923
1924         nl80211_mgmt_handle_register_eloop(bss);
1925
1926         return ret;
1927 }
1928
1929
1930 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1931 {
1932         int ret = 0;
1933
1934         if (nl80211_alloc_mgmt_handle(bss))
1935                 return -1;
1936
1937         wpa_printf(MSG_DEBUG,
1938                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1939                    bss->nl_mgmt);
1940
1941         /* Auth frames for mesh SAE */
1942         if (nl80211_register_frame(bss, bss->nl_mgmt,
1943                                    (WLAN_FC_TYPE_MGMT << 2) |
1944                                    (WLAN_FC_STYPE_AUTH << 4),
1945                                    NULL, 0) < 0)
1946                 ret = -1;
1947
1948         /* Mesh peering open */
1949         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1950                 ret = -1;
1951         /* Mesh peering confirm */
1952         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1953                 ret = -1;
1954         /* Mesh peering close */
1955         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1956                 ret = -1;
1957
1958         nl80211_mgmt_handle_register_eloop(bss);
1959
1960         return ret;
1961 }
1962
1963
1964 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1965 {
1966         struct nl_msg *msg;
1967         int ret;
1968
1969         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1970         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1971         if (ret) {
1972                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1973                            "failed: ret=%d (%s)",
1974                            ret, strerror(-ret));
1975         }
1976         return ret;
1977 }
1978
1979
1980 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1981 {
1982         static const int stypes[] = {
1983                 WLAN_FC_STYPE_AUTH,
1984                 WLAN_FC_STYPE_ASSOC_REQ,
1985                 WLAN_FC_STYPE_REASSOC_REQ,
1986                 WLAN_FC_STYPE_DISASSOC,
1987                 WLAN_FC_STYPE_DEAUTH,
1988                 WLAN_FC_STYPE_ACTION,
1989                 WLAN_FC_STYPE_PROBE_REQ,
1990 /* Beacon doesn't work as mac80211 doesn't currently allow
1991  * it, but it wouldn't really be the right thing anyway as
1992  * it isn't per interface ... maybe just dump the scan
1993  * results periodically for OLBC?
1994  */
1995                 /* WLAN_FC_STYPE_BEACON, */
1996         };
1997         unsigned int i;
1998
1999         if (nl80211_alloc_mgmt_handle(bss))
2000                 return -1;
2001         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2002                    "handle %p", bss->nl_mgmt);
2003
2004         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2005                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2006                                            (WLAN_FC_TYPE_MGMT << 2) |
2007                                            (stypes[i] << 4),
2008                                            NULL, 0) < 0) {
2009                         goto out_err;
2010                 }
2011         }
2012
2013         if (nl80211_register_spurious_class3(bss))
2014                 goto out_err;
2015
2016         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2017                 goto out_err;
2018
2019         nl80211_mgmt_handle_register_eloop(bss);
2020         return 0;
2021
2022 out_err:
2023         nl_destroy_handles(&bss->nl_mgmt);
2024         return -1;
2025 }
2026
2027
2028 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2029 {
2030         if (nl80211_alloc_mgmt_handle(bss))
2031                 return -1;
2032         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2033                    "handle %p (device SME)", bss->nl_mgmt);
2034
2035         if (nl80211_register_frame(bss, bss->nl_mgmt,
2036                                    (WLAN_FC_TYPE_MGMT << 2) |
2037                                    (WLAN_FC_STYPE_ACTION << 4),
2038                                    NULL, 0) < 0)
2039                 goto out_err;
2040
2041         nl80211_mgmt_handle_register_eloop(bss);
2042         return 0;
2043
2044 out_err:
2045         nl_destroy_handles(&bss->nl_mgmt);
2046         return -1;
2047 }
2048
2049
2050 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2051 {
2052         if (bss->nl_mgmt == NULL)
2053                 return;
2054         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2055                    "(%s)", bss->nl_mgmt, reason);
2056         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2057
2058         nl80211_put_wiphy_data_ap(bss);
2059 }
2060
2061
2062 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2063 {
2064         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2065 }
2066
2067
2068 static void nl80211_del_p2pdev(struct i802_bss *bss)
2069 {
2070         struct nl_msg *msg;
2071         int ret;
2072
2073         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2074         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2075
2076         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2077                    bss->ifname, (long long unsigned int) bss->wdev_id,
2078                    strerror(-ret));
2079 }
2080
2081
2082 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2083 {
2084         struct nl_msg *msg;
2085         int ret;
2086
2087         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2088                               NL80211_CMD_STOP_P2P_DEVICE);
2089         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2090
2091         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2092                    start ? "Start" : "Stop",
2093                    bss->ifname, (long long unsigned int) bss->wdev_id,
2094                    strerror(-ret));
2095         return ret;
2096 }
2097
2098
2099 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2100 {
2101         enum nl80211_iftype nlmode;
2102
2103         nlmode = nl80211_get_ifmode(bss);
2104         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2105                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2106                                              bss->ifname, up);
2107         }
2108
2109         /* P2P Device has start/stop which is equivalent */
2110         return nl80211_set_p2pdev(bss, up);
2111 }
2112
2113
2114 #ifdef CONFIG_TESTING_OPTIONS
2115 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2116 {
2117         /* struct wpa_driver_nl80211_data *drv = arg; */
2118         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2119         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2120
2121
2122         wpa_printf(MSG_DEBUG,
2123                    "nl80211: QCA vendor test command response received");
2124
2125         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2126                   genlmsg_attrlen(gnlh, 0), NULL);
2127         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2128                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2129                 return NL_SKIP;
2130         }
2131
2132         wpa_hexdump(MSG_DEBUG,
2133                     "nl80211: Received QCA vendor test command response",
2134                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2135                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2136
2137         return NL_SKIP;
2138 }
2139 #endif /* CONFIG_TESTING_OPTIONS */
2140
2141
2142 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2143 {
2144 #ifdef CONFIG_TESTING_OPTIONS
2145         struct nl_msg *msg;
2146         struct nlattr *params;
2147         int ret;
2148
2149         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2150             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2151             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2152                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2153             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2154             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2155                 nlmsg_free(msg);
2156                 return;
2157         }
2158         nla_nest_end(msg, params);
2159
2160         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2161         wpa_printf(MSG_DEBUG,
2162                    "nl80211: QCA vendor test command returned %d (%s)",
2163                    ret, strerror(-ret));
2164 #endif /* CONFIG_TESTING_OPTIONS */
2165 }
2166
2167
2168 static int
2169 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2170                                    const u8 *set_addr, int first,
2171                                    const char *driver_params)
2172 {
2173         struct i802_bss *bss = drv->first_bss;
2174         int send_rfkill_event = 0;
2175         enum nl80211_iftype nlmode;
2176
2177         drv->ifindex = if_nametoindex(bss->ifname);
2178         bss->ifindex = drv->ifindex;
2179         bss->wdev_id = drv->global->if_add_wdevid;
2180         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2181
2182         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2183         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2184         drv->global->if_add_wdevid_set = 0;
2185
2186         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2187                 bss->static_ap = 1;
2188
2189         if (wpa_driver_nl80211_capa(drv))
2190                 return -1;
2191
2192         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2193                 return -1;
2194
2195         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2196                    bss->ifname, drv->phyname);
2197
2198         if (set_addr &&
2199             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2200              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2201                                 set_addr)))
2202                 return -1;
2203
2204         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2205                 drv->start_mode_ap = 1;
2206
2207         if (drv->hostapd || bss->static_ap)
2208                 nlmode = NL80211_IFTYPE_AP;
2209         else if (bss->if_dynamic)
2210                 nlmode = nl80211_get_ifmode(bss);
2211         else
2212                 nlmode = NL80211_IFTYPE_STATION;
2213
2214         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2215                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2216                 return -1;
2217         }
2218
2219         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2220                 nl80211_get_macaddr(bss);
2221
2222         if (!rfkill_is_blocked(drv->rfkill)) {
2223                 int ret = i802_set_iface_flags(bss, 1);
2224                 if (ret) {
2225                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2226                                    "interface '%s' UP", bss->ifname);
2227                         return ret;
2228                 }
2229                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2230                         return ret;
2231         } else {
2232                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2233                            "interface '%s' due to rfkill", bss->ifname);
2234                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2235                         return 0;
2236                 drv->if_disabled = 1;
2237                 send_rfkill_event = 1;
2238         }
2239
2240         if (!drv->hostapd)
2241                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2242                                        1, IF_OPER_DORMANT);
2243
2244         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2245                                bss->addr))
2246                 return -1;
2247         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2248
2249         if (send_rfkill_event) {
2250                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2251                                        drv, drv->ctx);
2252         }
2253
2254         if (drv->vendor_cmd_test_avail)
2255                 qca_vendor_test(drv);
2256
2257         return 0;
2258 }
2259
2260
2261 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2262 {
2263         struct nl_msg *msg;
2264
2265         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2266                    drv->ifindex);
2267         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2268         return send_and_recv_msgs(drv, msg, NULL, NULL);
2269 }
2270
2271
2272 /**
2273  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2274  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2275  *
2276  * Shut down driver interface and processing of driver events. Free
2277  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2278  */
2279 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2280 {
2281         struct wpa_driver_nl80211_data *drv = bss->drv;
2282
2283         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2284                    bss->ifname, drv->disabled_11b_rates);
2285
2286         bss->in_deinit = 1;
2287         if (drv->data_tx_status)
2288                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2289         if (drv->eapol_tx_sock >= 0)
2290                 close(drv->eapol_tx_sock);
2291
2292         if (bss->nl_preq)
2293                 wpa_driver_nl80211_probe_req_report(bss, 0);
2294         if (bss->added_if_into_bridge) {
2295                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2296                                     bss->ifname) < 0)
2297                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2298                                    "interface %s from bridge %s: %s",
2299                                    bss->ifname, bss->brname, strerror(errno));
2300                 if (drv->rtnl_sk)
2301                         nl80211_handle_destroy(drv->rtnl_sk);
2302         }
2303         if (bss->added_bridge) {
2304                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2305                                           0) < 0)
2306                         wpa_printf(MSG_INFO,
2307                                    "nl80211: Could not set bridge %s down",
2308                                    bss->brname);
2309                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2310                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2311                                    "bridge %s: %s",
2312                                    bss->brname, strerror(errno));
2313         }
2314
2315         nl80211_remove_monitor_interface(drv);
2316
2317         if (is_ap_interface(drv->nlmode))
2318                 wpa_driver_nl80211_del_beacon(drv);
2319
2320         if (drv->eapol_sock >= 0) {
2321                 eloop_unregister_read_sock(drv->eapol_sock);
2322                 close(drv->eapol_sock);
2323         }
2324
2325         if (drv->if_indices != drv->default_if_indices)
2326                 os_free(drv->if_indices);
2327
2328         if (drv->disabled_11b_rates)
2329                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2330
2331         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2332                                IF_OPER_UP);
2333         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2334         rfkill_deinit(drv->rfkill);
2335
2336         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2337
2338         if (!drv->start_iface_up)
2339                 (void) i802_set_iface_flags(bss, 0);
2340
2341         if (drv->addr_changed) {
2342                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2343                                           0) < 0) {
2344                         wpa_printf(MSG_DEBUG,
2345                                    "nl80211: Could not set interface down to restore permanent MAC address");
2346                 }
2347                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2348                                        drv->perm_addr) < 0) {
2349                         wpa_printf(MSG_DEBUG,
2350                                    "nl80211: Could not restore permanent MAC address");
2351                 }
2352         }
2353
2354         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2355                 if (!drv->hostapd || !drv->start_mode_ap)
2356                         wpa_driver_nl80211_set_mode(bss,
2357                                                     NL80211_IFTYPE_STATION);
2358                 nl80211_mgmt_unsubscribe(bss, "deinit");
2359         } else {
2360                 nl80211_mgmt_unsubscribe(bss, "deinit");
2361                 nl80211_del_p2pdev(bss);
2362         }
2363
2364         nl80211_destroy_bss(drv->first_bss);
2365
2366         os_free(drv->filter_ssids);
2367
2368         os_free(drv->auth_ie);
2369
2370         if (drv->in_interface_list)
2371                 dl_list_del(&drv->list);
2372
2373         os_free(drv->extended_capa);
2374         os_free(drv->extended_capa_mask);
2375         os_free(drv->first_bss);
2376         os_free(drv);
2377 }
2378
2379
2380 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2381 {
2382         switch (alg) {
2383         case WPA_ALG_WEP:
2384                 if (key_len == 5)
2385                         return WLAN_CIPHER_SUITE_WEP40;
2386                 return WLAN_CIPHER_SUITE_WEP104;
2387         case WPA_ALG_TKIP:
2388                 return WLAN_CIPHER_SUITE_TKIP;
2389         case WPA_ALG_CCMP:
2390                 return WLAN_CIPHER_SUITE_CCMP;
2391         case WPA_ALG_GCMP:
2392                 return WLAN_CIPHER_SUITE_GCMP;
2393         case WPA_ALG_CCMP_256:
2394                 return WLAN_CIPHER_SUITE_CCMP_256;
2395         case WPA_ALG_GCMP_256:
2396                 return WLAN_CIPHER_SUITE_GCMP_256;
2397         case WPA_ALG_IGTK:
2398                 return WLAN_CIPHER_SUITE_AES_CMAC;
2399         case WPA_ALG_BIP_GMAC_128:
2400                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2401         case WPA_ALG_BIP_GMAC_256:
2402                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2403         case WPA_ALG_BIP_CMAC_256:
2404                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2405         case WPA_ALG_SMS4:
2406                 return WLAN_CIPHER_SUITE_SMS4;
2407         case WPA_ALG_KRK:
2408                 return WLAN_CIPHER_SUITE_KRK;
2409         case WPA_ALG_NONE:
2410         case WPA_ALG_PMK:
2411                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2412                            alg);
2413                 return 0;
2414         }
2415
2416         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2417                    alg);
2418         return 0;
2419 }
2420
2421
2422 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2423 {
2424         switch (cipher) {
2425         case WPA_CIPHER_CCMP_256:
2426                 return WLAN_CIPHER_SUITE_CCMP_256;
2427         case WPA_CIPHER_GCMP_256:
2428                 return WLAN_CIPHER_SUITE_GCMP_256;
2429         case WPA_CIPHER_CCMP:
2430                 return WLAN_CIPHER_SUITE_CCMP;
2431         case WPA_CIPHER_GCMP:
2432                 return WLAN_CIPHER_SUITE_GCMP;
2433         case WPA_CIPHER_TKIP:
2434                 return WLAN_CIPHER_SUITE_TKIP;
2435         case WPA_CIPHER_WEP104:
2436                 return WLAN_CIPHER_SUITE_WEP104;
2437         case WPA_CIPHER_WEP40:
2438                 return WLAN_CIPHER_SUITE_WEP40;
2439         case WPA_CIPHER_GTK_NOT_USED:
2440                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2441         }
2442
2443         return 0;
2444 }
2445
2446
2447 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2448                                        int max_suites)
2449 {
2450         int num_suites = 0;
2451
2452         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2453                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2454         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2455                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2456         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2457                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2458         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2459                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2460         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2461                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2462         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2463                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2464         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2465                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2466
2467         return num_suites;
2468 }
2469
2470
2471 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2472                                   const u8 *key, size_t key_len)
2473 {
2474         struct nl_msg *msg;
2475         int ret;
2476
2477         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2478                 return 0;
2479
2480         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2481             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2482             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2483                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2484             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2485                 nl80211_nlmsg_clear(msg);
2486                 nlmsg_free(msg);
2487                 return -1;
2488         }
2489         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2490         if (ret) {
2491                 wpa_printf(MSG_DEBUG,
2492                            "nl80211: Key management set key failed: ret=%d (%s)",
2493                            ret, strerror(-ret));
2494         }
2495
2496         return ret;
2497 }
2498
2499
2500 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2501                                       enum wpa_alg alg, const u8 *addr,
2502                                       int key_idx, int set_tx,
2503                                       const u8 *seq, size_t seq_len,
2504                                       const u8 *key, size_t key_len)
2505 {
2506         struct wpa_driver_nl80211_data *drv = bss->drv;
2507         int ifindex;
2508         struct nl_msg *msg = NULL;
2509         int ret;
2510         int tdls = 0;
2511
2512         /* Ignore for P2P Device */
2513         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2514                 return 0;
2515
2516         ifindex = if_nametoindex(ifname);
2517         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2518                    "set_tx=%d seq_len=%lu key_len=%lu",
2519                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2520                    (unsigned long) seq_len, (unsigned long) key_len);
2521 #ifdef CONFIG_TDLS
2522         if (key_idx == -1) {
2523                 key_idx = 0;
2524                 tdls = 1;
2525         }
2526 #endif /* CONFIG_TDLS */
2527
2528         if (alg == WPA_ALG_PMK &&
2529             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2530                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2531                            __func__);
2532                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2533                 return ret;
2534         }
2535
2536         if (alg == WPA_ALG_NONE) {
2537                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2538                 if (!msg)
2539                         return -ENOBUFS;
2540         } else {
2541                 u32 suite;
2542
2543                 suite = wpa_alg_to_cipher_suite(alg, key_len);
2544                 if (!suite)
2545                         goto fail;
2546                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2547                 if (!msg ||
2548                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2549                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER, suite))
2550                         goto fail;
2551                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2552         }
2553
2554         if (seq && seq_len) {
2555                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2556                         goto fail;
2557                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2558         }
2559
2560         if (addr && !is_broadcast_ether_addr(addr)) {
2561                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2562                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2563                         goto fail;
2564
2565                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2566                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2567                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2568                                         NL80211_KEYTYPE_GROUP))
2569                                 goto fail;
2570                 }
2571         } else if (addr && is_broadcast_ether_addr(addr)) {
2572                 struct nlattr *types;
2573
2574                 wpa_printf(MSG_DEBUG, "   broadcast key");
2575
2576                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2577                 if (!types ||
2578                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2579                         goto fail;
2580                 nla_nest_end(msg, types);
2581         }
2582         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2583                 goto fail;
2584
2585         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2586         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2587                 ret = 0;
2588         if (ret)
2589                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2590                            ret, strerror(-ret));
2591
2592         /*
2593          * If we failed or don't need to set the default TX key (below),
2594          * we're done here.
2595          */
2596         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2597                 return ret;
2598         if (is_ap_interface(drv->nlmode) && addr &&
2599             !is_broadcast_ether_addr(addr))
2600                 return ret;
2601
2602         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2603         if (!msg ||
2604             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2605             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2606                                alg == WPA_ALG_BIP_GMAC_128 ||
2607                                alg == WPA_ALG_BIP_GMAC_256 ||
2608                                alg == WPA_ALG_BIP_CMAC_256) ?
2609                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2610                          NL80211_ATTR_KEY_DEFAULT))
2611                 goto fail;
2612         if (addr && is_broadcast_ether_addr(addr)) {
2613                 struct nlattr *types;
2614
2615                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2616                 if (!types ||
2617                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2618                         goto fail;
2619                 nla_nest_end(msg, types);
2620         } else if (addr) {
2621                 struct nlattr *types;
2622
2623                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2624                 if (!types ||
2625                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2626                         goto fail;
2627                 nla_nest_end(msg, types);
2628         }
2629
2630         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2631         if (ret == -ENOENT)
2632                 ret = 0;
2633         if (ret)
2634                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2635                            "err=%d %s)", ret, strerror(-ret));
2636         return ret;
2637
2638 fail:
2639         nl80211_nlmsg_clear(msg);
2640         nlmsg_free(msg);
2641         return -ENOBUFS;
2642 }
2643
2644
2645 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2646                       int key_idx, int defkey,
2647                       const u8 *seq, size_t seq_len,
2648                       const u8 *key, size_t key_len)
2649 {
2650         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2651         u32 suite;
2652
2653         if (!key_attr)
2654                 return -1;
2655
2656         suite = wpa_alg_to_cipher_suite(alg, key_len);
2657         if (!suite)
2658                 return -1;
2659
2660         if (defkey && alg == WPA_ALG_IGTK) {
2661                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2662                         return -1;
2663         } else if (defkey) {
2664                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2665                         return -1;
2666         }
2667
2668         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2669             nla_put_u32(msg, NL80211_KEY_CIPHER, suite) ||
2670             (seq && seq_len &&
2671              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2672             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2673                 return -1;
2674
2675         nla_nest_end(msg, key_attr);
2676
2677         return 0;
2678 }
2679
2680
2681 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2682                                  struct nl_msg *msg)
2683 {
2684         int i, privacy = 0;
2685         struct nlattr *nl_keys, *nl_key;
2686
2687         for (i = 0; i < 4; i++) {
2688                 if (!params->wep_key[i])
2689                         continue;
2690                 privacy = 1;
2691                 break;
2692         }
2693         if (params->wps == WPS_MODE_PRIVACY)
2694                 privacy = 1;
2695         if (params->pairwise_suite &&
2696             params->pairwise_suite != WPA_CIPHER_NONE)
2697                 privacy = 1;
2698
2699         if (!privacy)
2700                 return 0;
2701
2702         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2703                 return -ENOBUFS;
2704
2705         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2706         if (!nl_keys)
2707                 return -ENOBUFS;
2708
2709         for (i = 0; i < 4; i++) {
2710                 if (!params->wep_key[i])
2711                         continue;
2712
2713                 nl_key = nla_nest_start(msg, i);
2714                 if (!nl_key ||
2715                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2716                             params->wep_key[i]) ||
2717                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2718                                 params->wep_key_len[i] == 5 ?
2719                                 WLAN_CIPHER_SUITE_WEP40 :
2720                                 WLAN_CIPHER_SUITE_WEP104) ||
2721                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2722                     (i == params->wep_tx_keyidx &&
2723                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2724                         return -ENOBUFS;
2725
2726                 nla_nest_end(msg, nl_key);
2727         }
2728         nla_nest_end(msg, nl_keys);
2729
2730         return 0;
2731 }
2732
2733
2734 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2735                             const u8 *addr, int cmd, u16 reason_code,
2736                             int local_state_change)
2737 {
2738         int ret;
2739         struct nl_msg *msg;
2740
2741         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2742             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2743             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2744             (local_state_change &&
2745              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2746                 nlmsg_free(msg);
2747                 return -1;
2748         }
2749
2750         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2751         if (ret) {
2752                 wpa_dbg(drv->ctx, MSG_DEBUG,
2753                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2754                         reason_code, ret, strerror(-ret));
2755         }
2756         return ret;
2757 }
2758
2759
2760 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2761                                          int reason_code)
2762 {
2763         int ret;
2764
2765         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2766         nl80211_mark_disconnected(drv);
2767         /* Disconnect command doesn't need BSSID - it uses cached value */
2768         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2769                                       reason_code, 0);
2770         /*
2771          * For locally generated disconnect, supplicant already generates a
2772          * DEAUTH event, so ignore the event from NL80211.
2773          */
2774         drv->ignore_next_local_disconnect = ret == 0;
2775
2776         return ret;
2777 }
2778
2779
2780 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2781                                              const u8 *addr, int reason_code)
2782 {
2783         struct wpa_driver_nl80211_data *drv = bss->drv;
2784         int ret;
2785
2786         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2787                 nl80211_mark_disconnected(drv);
2788                 return nl80211_leave_ibss(drv, 1);
2789         }
2790         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2791                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2792         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2793                    __func__, MAC2STR(addr), reason_code);
2794         nl80211_mark_disconnected(drv);
2795         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2796                                       reason_code, 0);
2797         /*
2798          * For locally generated deauthenticate, supplicant already generates a
2799          * DEAUTH event, so ignore the event from NL80211.
2800          */
2801         drv->ignore_next_local_deauth = ret == 0;
2802         return ret;
2803 }
2804
2805
2806 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2807                                      struct wpa_driver_auth_params *params)
2808 {
2809         int i;
2810
2811         drv->auth_freq = params->freq;
2812         drv->auth_alg = params->auth_alg;
2813         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2814         drv->auth_local_state_change = params->local_state_change;
2815         drv->auth_p2p = params->p2p;
2816
2817         if (params->bssid)
2818                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2819         else
2820                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2821
2822         if (params->ssid) {
2823                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2824                 drv->auth_ssid_len = params->ssid_len;
2825         } else
2826                 drv->auth_ssid_len = 0;
2827
2828
2829         os_free(drv->auth_ie);
2830         drv->auth_ie = NULL;
2831         drv->auth_ie_len = 0;
2832         if (params->ie) {
2833                 drv->auth_ie = os_malloc(params->ie_len);
2834                 if (drv->auth_ie) {
2835                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2836                         drv->auth_ie_len = params->ie_len;
2837                 }
2838         }
2839
2840         for (i = 0; i < 4; i++) {
2841                 if (params->wep_key[i] && params->wep_key_len[i] &&
2842                     params->wep_key_len[i] <= 16) {
2843                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2844                                   params->wep_key_len[i]);
2845                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2846                 } else
2847                         drv->auth_wep_key_len[i] = 0;
2848         }
2849 }
2850
2851
2852 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2853 {
2854         struct wpa_driver_nl80211_data *drv = bss->drv;
2855
2856         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2857                 return;
2858
2859         /*
2860          * Looks like we failed to unmask 11b rates previously. This could
2861          * happen, e.g., if the interface was down at the point in time when a
2862          * P2P group was terminated.
2863          */
2864         wpa_printf(MSG_DEBUG,
2865                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2866                    bss->ifname);
2867         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2868 }
2869
2870
2871 static int wpa_driver_nl80211_authenticate(
2872         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2873 {
2874         struct wpa_driver_nl80211_data *drv = bss->drv;
2875         int ret = -1, i;
2876         struct nl_msg *msg;
2877         enum nl80211_auth_type type;
2878         enum nl80211_iftype nlmode;
2879         int count = 0;
2880         int is_retry;
2881
2882         nl80211_unmask_11b_rates(bss);
2883
2884         is_retry = drv->retry_auth;
2885         drv->retry_auth = 0;
2886         drv->ignore_deauth_event = 0;
2887
2888         nl80211_mark_disconnected(drv);
2889         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2890         if (params->bssid)
2891                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2892         else
2893                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2894         /* FIX: IBSS mode */
2895         nlmode = params->p2p ?
2896                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2897         if (drv->nlmode != nlmode &&
2898             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2899                 return -1;
2900
2901 retry:
2902         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2903                    drv->ifindex);
2904
2905         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2906         if (!msg)
2907                 goto fail;
2908
2909         for (i = 0; i < 4; i++) {
2910                 if (!params->wep_key[i])
2911                         continue;
2912                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2913                                            NULL, i,
2914                                            i == params->wep_tx_keyidx, NULL, 0,
2915                                            params->wep_key[i],
2916                                            params->wep_key_len[i]);
2917                 if (params->wep_tx_keyidx != i)
2918                         continue;
2919                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2920                                params->wep_key[i], params->wep_key_len[i]))
2921                         goto fail;
2922         }
2923
2924         if (params->bssid) {
2925                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2926                            MAC2STR(params->bssid));
2927                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2928                         goto fail;
2929         }
2930         if (params->freq) {
2931                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2932                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2933                         goto fail;
2934         }
2935         if (params->ssid) {
2936                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2937                                   params->ssid, params->ssid_len);
2938                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2939                             params->ssid))
2940                         goto fail;
2941         }
2942         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2943         if (params->ie &&
2944             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2945                 goto fail;
2946         if (params->sae_data) {
2947                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2948                             params->sae_data_len);
2949                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2950                             params->sae_data))
2951                         goto fail;
2952         }
2953         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2954                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2955         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2956                 type = NL80211_AUTHTYPE_SHARED_KEY;
2957         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2958                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2959         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2960                 type = NL80211_AUTHTYPE_FT;
2961         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2962                 type = NL80211_AUTHTYPE_SAE;
2963         else
2964                 goto fail;
2965         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2966         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2967                 goto fail;
2968         if (params->local_state_change) {
2969                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2970                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2971                         goto fail;
2972         }
2973
2974         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2975         msg = NULL;
2976         if (ret) {
2977                 wpa_dbg(drv->ctx, MSG_DEBUG,
2978                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2979                         ret, strerror(-ret));
2980                 count++;
2981                 if (ret == -EALREADY && count == 1 && params->bssid &&
2982                     !params->local_state_change) {
2983                         /*
2984                          * mac80211 does not currently accept new
2985                          * authentication if we are already authenticated. As a
2986                          * workaround, force deauthentication and try again.
2987                          */
2988                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2989                                    "after forced deauthentication");
2990                         drv->ignore_deauth_event = 1;
2991                         wpa_driver_nl80211_deauthenticate(
2992                                 bss, params->bssid,
2993                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2994                         nlmsg_free(msg);
2995                         goto retry;
2996                 }
2997
2998                 if (ret == -ENOENT && params->freq && !is_retry) {
2999                         /*
3000                          * cfg80211 has likely expired the BSS entry even
3001                          * though it was previously available in our internal
3002                          * BSS table. To recover quickly, start a single
3003                          * channel scan on the specified channel.
3004                          */
3005                         struct wpa_driver_scan_params scan;
3006                         int freqs[2];
3007
3008                         os_memset(&scan, 0, sizeof(scan));
3009                         scan.num_ssids = 1;
3010                         if (params->ssid) {
3011                                 scan.ssids[0].ssid = params->ssid;
3012                                 scan.ssids[0].ssid_len = params->ssid_len;
3013                         }
3014                         freqs[0] = params->freq;
3015                         freqs[1] = 0;
3016                         scan.freqs = freqs;
3017                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3018                                    "channel scan to refresh cfg80211 BSS "
3019                                    "entry");
3020                         ret = wpa_driver_nl80211_scan(bss, &scan);
3021                         if (ret == 0) {
3022                                 nl80211_copy_auth_params(drv, params);
3023                                 drv->scan_for_auth = 1;
3024                         }
3025                 } else if (is_retry) {
3026                         /*
3027                          * Need to indicate this with an event since the return
3028                          * value from the retry is not delivered to core code.
3029                          */
3030                         union wpa_event_data event;
3031                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3032                                    "failed");
3033                         os_memset(&event, 0, sizeof(event));
3034                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3035                                   ETH_ALEN);
3036                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3037                                              &event);
3038                 }
3039         } else {
3040                 wpa_printf(MSG_DEBUG,
3041                            "nl80211: Authentication request send successfully");
3042         }
3043
3044 fail:
3045         nlmsg_free(msg);
3046         return ret;
3047 }
3048
3049
3050 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3051 {
3052         struct wpa_driver_auth_params params;
3053         struct i802_bss *bss = drv->first_bss;
3054         int i;
3055
3056         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3057
3058         os_memset(&params, 0, sizeof(params));
3059         params.freq = drv->auth_freq;
3060         params.auth_alg = drv->auth_alg;
3061         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3062         params.local_state_change = drv->auth_local_state_change;
3063         params.p2p = drv->auth_p2p;
3064
3065         if (!is_zero_ether_addr(drv->auth_bssid_))
3066                 params.bssid = drv->auth_bssid_;
3067
3068         if (drv->auth_ssid_len) {
3069                 params.ssid = drv->auth_ssid;
3070                 params.ssid_len = drv->auth_ssid_len;
3071         }
3072
3073         params.ie = drv->auth_ie;
3074         params.ie_len = drv->auth_ie_len;
3075
3076         for (i = 0; i < 4; i++) {
3077                 if (drv->auth_wep_key_len[i]) {
3078                         params.wep_key[i] = drv->auth_wep_key[i];
3079                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3080                 }
3081         }
3082
3083         drv->retry_auth = 1;
3084         return wpa_driver_nl80211_authenticate(bss, &params);
3085 }
3086
3087
3088 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3089                                          const void *data, size_t len,
3090                                          int encrypt, int noack,
3091                                          unsigned int freq, int no_cck,
3092                                          int offchanok, unsigned int wait_time)
3093 {
3094         struct wpa_driver_nl80211_data *drv = bss->drv;
3095         u64 cookie;
3096         int res;
3097
3098         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3099                 freq = nl80211_get_assoc_freq(drv);
3100                 wpa_printf(MSG_DEBUG,
3101                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3102                            freq);
3103         }
3104         if (freq == 0) {
3105                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3106                            bss->freq);
3107                 freq = bss->freq;
3108         }
3109
3110         if (drv->use_monitor) {
3111                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3112                            freq, bss->freq);
3113                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3114         }
3115
3116         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3117         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3118                                      &cookie, no_cck, noack, offchanok);
3119         if (res == 0 && !noack) {
3120                 const struct ieee80211_mgmt *mgmt;
3121                 u16 fc;
3122
3123                 mgmt = (const struct ieee80211_mgmt *) data;
3124                 fc = le_to_host16(mgmt->frame_control);
3125                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3126                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3127                         wpa_printf(MSG_MSGDUMP,
3128                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3129                                    (long long unsigned int)
3130                                    drv->send_action_cookie,
3131                                    (long long unsigned int) cookie);
3132                         drv->send_action_cookie = cookie;
3133                 }
3134         }
3135
3136         return res;
3137 }
3138
3139
3140 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3141                                         size_t data_len, int noack,
3142                                         unsigned int freq, int no_cck,
3143                                         int offchanok,
3144                                         unsigned int wait_time)
3145 {
3146         struct wpa_driver_nl80211_data *drv = bss->drv;
3147         struct ieee80211_mgmt *mgmt;
3148         int encrypt = 1;
3149         u16 fc;
3150
3151         mgmt = (struct ieee80211_mgmt *) data;
3152         fc = le_to_host16(mgmt->frame_control);
3153         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3154                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3155                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3156                    fc, fc2str(fc), drv->nlmode);
3157
3158         if ((is_sta_interface(drv->nlmode) ||
3159              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3160             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3161             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3162                 /*
3163                  * The use of last_mgmt_freq is a bit of a hack,
3164                  * but it works due to the single-threaded nature
3165                  * of wpa_supplicant.
3166                  */
3167                 if (freq == 0) {
3168                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3169                                    drv->last_mgmt_freq);
3170                         freq = drv->last_mgmt_freq;
3171                 }
3172                 return nl80211_send_frame_cmd(bss, freq, 0,
3173                                               data, data_len, NULL, 1, noack,
3174                                               1);
3175         }
3176
3177         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3178                 if (freq == 0) {
3179                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3180                                    bss->freq);
3181                         freq = bss->freq;
3182                 }
3183                 return nl80211_send_frame_cmd(bss, freq,
3184                                               (int) freq == bss->freq ? 0 :
3185                                               wait_time,
3186                                               data, data_len,
3187                                               &drv->send_action_cookie,
3188                                               no_cck, noack, offchanok);
3189         }
3190
3191         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3192             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3193                 /*
3194                  * Only one of the authentication frame types is encrypted.
3195                  * In order for static WEP encryption to work properly (i.e.,
3196                  * to not encrypt the frame), we need to tell mac80211 about
3197                  * the frames that must not be encrypted.
3198                  */
3199                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3200                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3201                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3202                         encrypt = 0;
3203         }
3204
3205         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3206         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3207                                              noack, freq, no_cck, offchanok,
3208                                              wait_time);
3209 }
3210
3211
3212 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3213 {
3214         u8 rates[NL80211_MAX_SUPP_RATES];
3215         u8 rates_len = 0;
3216         int i;
3217
3218         if (!basic_rates)
3219                 return 0;
3220
3221         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3222                 rates[rates_len++] = basic_rates[i] / 5;
3223
3224         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3225 }
3226
3227
3228 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3229                            int slot, int ht_opmode, int ap_isolate,
3230                            const int *basic_rates)
3231 {
3232         struct wpa_driver_nl80211_data *drv = bss->drv;
3233         struct nl_msg *msg;
3234
3235         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3236             (cts >= 0 &&
3237              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3238             (preamble >= 0 &&
3239              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3240             (slot >= 0 &&
3241              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3242             (ht_opmode >= 0 &&
3243              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3244             (ap_isolate >= 0 &&
3245              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3246             nl80211_put_basic_rates(msg, basic_rates)) {
3247                 nlmsg_free(msg);
3248                 return -ENOBUFS;
3249         }
3250
3251         return send_and_recv_msgs(drv, msg, NULL, NULL);
3252 }
3253
3254
3255 static int wpa_driver_nl80211_set_acl(void *priv,
3256                                       struct hostapd_acl_params *params)
3257 {
3258         struct i802_bss *bss = priv;
3259         struct wpa_driver_nl80211_data *drv = bss->drv;
3260         struct nl_msg *msg;
3261         struct nlattr *acl;
3262         unsigned int i;
3263         int ret;
3264
3265         if (!(drv->capa.max_acl_mac_addrs))
3266                 return -ENOTSUP;
3267
3268         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3269                 return -ENOTSUP;
3270
3271         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3272                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3273
3274         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3275             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3276                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3277                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3278             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3279                 nlmsg_free(msg);
3280                 return -ENOMEM;
3281         }
3282
3283         for (i = 0; i < params->num_mac_acl; i++) {
3284                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3285                         nlmsg_free(msg);
3286                         return -ENOMEM;
3287                 }
3288         }
3289
3290         nla_nest_end(msg, acl);
3291
3292         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3293         if (ret) {
3294                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3295                            ret, strerror(-ret));
3296         }
3297
3298         return ret;
3299 }
3300
3301
3302 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3303 {
3304         if (beacon_int > 0) {
3305                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3306                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3307                                    beacon_int);
3308         }
3309
3310         return 0;
3311 }
3312
3313
3314 static int wpa_driver_nl80211_set_ap(void *priv,
3315                                      struct wpa_driver_ap_params *params)
3316 {
3317         struct i802_bss *bss = priv;
3318         struct wpa_driver_nl80211_data *drv = bss->drv;
3319         struct nl_msg *msg;
3320         u8 cmd = NL80211_CMD_NEW_BEACON;
3321         int ret;
3322         int beacon_set;
3323         int num_suites;
3324         int smps_mode;
3325         u32 suites[10], suite;
3326         u32 ver;
3327
3328         beacon_set = params->reenable ? 0 : bss->beacon_set;
3329
3330         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3331                    beacon_set);
3332         if (beacon_set)
3333                 cmd = NL80211_CMD_SET_BEACON;
3334
3335         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3336                     params->head, params->head_len);
3337         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3338                     params->tail, params->tail_len);
3339         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3340         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3341         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3342         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3343                           params->ssid, params->ssid_len);
3344         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3345             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3346                     params->head) ||
3347             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3348                     params->tail) ||
3349             nl80211_put_beacon_int(msg, params->beacon_int) ||
3350             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3351             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3352                 goto fail;
3353         if (params->proberesp && params->proberesp_len) {
3354                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3355                             params->proberesp, params->proberesp_len);
3356                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3357                             params->proberesp))
3358                         goto fail;
3359         }
3360         switch (params->hide_ssid) {
3361         case NO_SSID_HIDING:
3362                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3363                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3364                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3365                         goto fail;
3366                 break;
3367         case HIDDEN_SSID_ZERO_LEN:
3368                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3369                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3370                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3371                         goto fail;
3372                 break;
3373         case HIDDEN_SSID_ZERO_CONTENTS:
3374                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3375                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3376                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3377                         goto fail;
3378                 break;
3379         }
3380         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3381         if (params->privacy &&
3382             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3383                 goto fail;
3384         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3385         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3386             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3387                 /* Leave out the attribute */
3388         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3389                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3390                                 NL80211_AUTHTYPE_SHARED_KEY))
3391                         goto fail;
3392         } else {
3393                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3394                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3395                         goto fail;
3396         }
3397
3398         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3399         ver = 0;
3400         if (params->wpa_version & WPA_PROTO_WPA)
3401                 ver |= NL80211_WPA_VERSION_1;
3402         if (params->wpa_version & WPA_PROTO_RSN)
3403                 ver |= NL80211_WPA_VERSION_2;
3404         if (ver &&
3405             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3406                 goto fail;
3407
3408         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3409                    params->key_mgmt_suites);
3410         num_suites = 0;
3411         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3412                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3413         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3414                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3415         if (num_suites &&
3416             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3417                     suites))
3418                 goto fail;
3419
3420         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3421             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3422             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3423                 goto fail;
3424
3425         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3426                    params->pairwise_ciphers);
3427         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3428                                                  suites, ARRAY_SIZE(suites));
3429         if (num_suites &&
3430             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3431                     num_suites * sizeof(u32), suites))
3432                 goto fail;
3433
3434         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3435                    params->group_cipher);
3436         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3437         if (suite &&
3438             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3439                 goto fail;
3440
3441         switch (params->smps_mode) {
3442         case HT_CAP_INFO_SMPS_DYNAMIC:
3443                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3444                 smps_mode = NL80211_SMPS_DYNAMIC;
3445                 break;
3446         case HT_CAP_INFO_SMPS_STATIC:
3447                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3448                 smps_mode = NL80211_SMPS_STATIC;
3449                 break;
3450         default:
3451                 /* invalid - fallback to smps off */
3452         case HT_CAP_INFO_SMPS_DISABLED:
3453                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3454                 smps_mode = NL80211_SMPS_OFF;
3455                 break;
3456         }
3457         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3458                 goto fail;
3459
3460         if (params->beacon_ies) {
3461                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3462                                 params->beacon_ies);
3463                 if (nla_put(msg, NL80211_ATTR_IE,
3464                             wpabuf_len(params->beacon_ies),
3465                             wpabuf_head(params->beacon_ies)))
3466                         goto fail;
3467         }
3468         if (params->proberesp_ies) {
3469                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3470                                 params->proberesp_ies);
3471                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3472                             wpabuf_len(params->proberesp_ies),
3473                             wpabuf_head(params->proberesp_ies)))
3474                         goto fail;
3475         }
3476         if (params->assocresp_ies) {
3477                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3478                                 params->assocresp_ies);
3479                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3480                             wpabuf_len(params->assocresp_ies),
3481                             wpabuf_head(params->assocresp_ies)))
3482                         goto fail;
3483         }
3484
3485         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3486                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3487                            params->ap_max_inactivity);
3488                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3489                                 params->ap_max_inactivity))
3490                         goto fail;
3491         }
3492
3493 #ifdef CONFIG_P2P
3494         if (params->p2p_go_ctwindow > 0) {
3495                 if (drv->p2p_go_ctwindow_supported) {
3496                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3497                                    params->p2p_go_ctwindow);
3498                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3499                                        params->p2p_go_ctwindow))
3500                                 goto fail;
3501                 } else {
3502                         wpa_printf(MSG_INFO,
3503                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3504                 }
3505         }
3506 #endif /* CONFIG_P2P */
3507
3508         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3509         if (ret) {
3510                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3511                            ret, strerror(-ret));
3512         } else {
3513                 bss->beacon_set = 1;
3514                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3515                                 params->short_slot_time, params->ht_opmode,
3516                                 params->isolate, params->basic_rates);
3517                 if (beacon_set && params->freq &&
3518                     params->freq->bandwidth != bss->bandwidth) {
3519                         wpa_printf(MSG_DEBUG,
3520                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3521                                    bss->ifname, bss->bandwidth,
3522                                    params->freq->bandwidth);
3523                         ret = nl80211_set_channel(bss, params->freq, 1);
3524                         if (ret) {
3525                                 wpa_printf(MSG_DEBUG,
3526                                            "nl80211: Frequency set failed: %d (%s)",
3527                                            ret, strerror(-ret));
3528                         } else {
3529                                 wpa_printf(MSG_DEBUG,
3530                                            "nl80211: Frequency set succeeded for ht2040 coex");
3531                                 bss->bandwidth = params->freq->bandwidth;
3532                         }
3533                 } else if (!beacon_set) {
3534                         /*
3535                          * cfg80211 updates the driver on frequence change in AP
3536                          * mode only at the point when beaconing is started, so
3537                          * set the initial value here.
3538                          */
3539                         bss->bandwidth = params->freq->bandwidth;
3540                 }
3541         }
3542         return ret;
3543 fail:
3544         nlmsg_free(msg);
3545         return -ENOBUFS;
3546 }
3547
3548
3549 static int nl80211_put_freq_params(struct nl_msg *msg,
3550                                    const struct hostapd_freq_params *freq)
3551 {
3552         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3553         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3554                 return -ENOBUFS;
3555
3556         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3557         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3558
3559         if (freq->vht_enabled) {
3560                 enum nl80211_chan_width cw;
3561
3562                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3563                 switch (freq->bandwidth) {
3564                 case 20:
3565                         cw = NL80211_CHAN_WIDTH_20;
3566                         break;
3567                 case 40:
3568                         cw = NL80211_CHAN_WIDTH_40;
3569                         break;
3570                 case 80:
3571                         if (freq->center_freq2)
3572                                 cw = NL80211_CHAN_WIDTH_80P80;
3573                         else
3574                                 cw = NL80211_CHAN_WIDTH_80;
3575                         break;
3576                 case 160:
3577                         cw = NL80211_CHAN_WIDTH_160;
3578                         break;
3579                 default:
3580                         return -EINVAL;
3581                 }
3582
3583                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3584                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3585                            freq->center_freq1);
3586                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3587                            freq->center_freq2);
3588                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3589                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3590                                 freq->center_freq1) ||
3591                     (freq->center_freq2 &&
3592                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3593                                  freq->center_freq2)))
3594                         return -ENOBUFS;
3595         } else if (freq->ht_enabled) {
3596                 enum nl80211_channel_type ct;
3597
3598                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3599                            freq->sec_channel_offset);
3600                 switch (freq->sec_channel_offset) {
3601                 case -1:
3602                         ct = NL80211_CHAN_HT40MINUS;
3603                         break;
3604                 case 1:
3605                         ct = NL80211_CHAN_HT40PLUS;
3606                         break;
3607                 default:
3608                         ct = NL80211_CHAN_HT20;
3609                         break;
3610                 }
3611
3612                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3613                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3614                         return -ENOBUFS;
3615         }
3616         return 0;
3617 }
3618
3619
3620 static int nl80211_set_channel(struct i802_bss *bss,
3621                                struct hostapd_freq_params *freq, int set_chan)
3622 {
3623         struct wpa_driver_nl80211_data *drv = bss->drv;
3624         struct nl_msg *msg;
3625         int ret;
3626
3627         wpa_printf(MSG_DEBUG,
3628                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3629                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3630                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3631
3632         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3633                               NL80211_CMD_SET_WIPHY);
3634         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3635                 nlmsg_free(msg);
3636                 return -1;
3637         }
3638
3639         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3640         if (ret == 0) {
3641                 bss->freq = freq->freq;
3642                 return 0;
3643         }
3644         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3645                    "%d (%s)", freq->freq, ret, strerror(-ret));
3646         return -1;
3647 }
3648
3649
3650 static u32 sta_flags_nl80211(int flags)
3651 {
3652         u32 f = 0;
3653
3654         if (flags & WPA_STA_AUTHORIZED)
3655                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3656         if (flags & WPA_STA_WMM)
3657                 f |= BIT(NL80211_STA_FLAG_WME);
3658         if (flags & WPA_STA_SHORT_PREAMBLE)
3659                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3660         if (flags & WPA_STA_MFP)
3661                 f |= BIT(NL80211_STA_FLAG_MFP);
3662         if (flags & WPA_STA_TDLS_PEER)
3663                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3664         if (flags & WPA_STA_AUTHENTICATED)
3665                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3666
3667         return f;
3668 }
3669
3670
3671 #ifdef CONFIG_MESH
3672 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3673 {
3674         switch (state) {
3675         case PLINK_LISTEN:
3676                 return NL80211_PLINK_LISTEN;
3677         case PLINK_OPEN_SENT:
3678                 return NL80211_PLINK_OPN_SNT;
3679         case PLINK_OPEN_RCVD:
3680                 return NL80211_PLINK_OPN_RCVD;
3681         case PLINK_CNF_RCVD:
3682                 return NL80211_PLINK_CNF_RCVD;
3683         case PLINK_ESTAB:
3684                 return NL80211_PLINK_ESTAB;
3685         case PLINK_HOLDING:
3686                 return NL80211_PLINK_HOLDING;
3687         case PLINK_BLOCKED:
3688                 return NL80211_PLINK_BLOCKED;
3689         default:
3690                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3691                            state);
3692         }
3693         return -1;
3694 }
3695 #endif /* CONFIG_MESH */
3696
3697
3698 static int wpa_driver_nl80211_sta_add(void *priv,
3699                                       struct hostapd_sta_add_params *params)
3700 {
3701         struct i802_bss *bss = priv;
3702         struct wpa_driver_nl80211_data *drv = bss->drv;
3703         struct nl_msg *msg;
3704         struct nl80211_sta_flag_update upd;
3705         int ret = -ENOBUFS;
3706
3707         if ((params->flags & WPA_STA_TDLS_PEER) &&
3708             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3709                 return -EOPNOTSUPP;
3710
3711         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3712                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3713         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3714                               NL80211_CMD_NEW_STATION);
3715         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3716                 goto fail;
3717
3718         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3719                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3720                             params->supp_rates, params->supp_rates_len);
3721                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3722                            params->capability);
3723                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3724                             params->supp_rates_len, params->supp_rates) ||
3725                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3726                                 params->capability))
3727                         goto fail;
3728
3729                 if (params->ht_capabilities) {
3730                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3731                                     (u8 *) params->ht_capabilities,
3732                                     sizeof(*params->ht_capabilities));
3733                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3734                                     sizeof(*params->ht_capabilities),
3735                                     params->ht_capabilities))
3736                                 goto fail;
3737                 }
3738
3739                 if (params->vht_capabilities) {
3740                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3741                                     (u8 *) params->vht_capabilities,
3742                                     sizeof(*params->vht_capabilities));
3743                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3744                                     sizeof(*params->vht_capabilities),
3745                                     params->vht_capabilities))
3746                                 goto fail;
3747                 }
3748
3749                 if (params->ext_capab) {
3750                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3751                                     params->ext_capab, params->ext_capab_len);
3752                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3753                                     params->ext_capab_len, params->ext_capab))
3754                                 goto fail;
3755                 }
3756         }
3757         if (!params->set) {
3758                 if (params->aid) {
3759                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3760                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3761                                 goto fail;
3762                 } else {
3763                         /*
3764                          * cfg80211 validates that AID is non-zero, so we have
3765                          * to make this a non-zero value for the TDLS case where
3766                          * a dummy STA entry is used for now.
3767                          */
3768                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3769                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3770                                 goto fail;
3771                 }
3772                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3773                            params->listen_interval);
3774                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3775                                 params->listen_interval))
3776                         goto fail;
3777         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3778                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3779                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3780                         goto fail;
3781         }
3782
3783         if (params->vht_opmode_enabled) {
3784                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3785                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3786                                params->vht_opmode))
3787                         goto fail;
3788         }
3789
3790         if (params->supp_channels) {
3791                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3792                             params->supp_channels, params->supp_channels_len);
3793                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3794                             params->supp_channels_len, params->supp_channels))
3795                         goto fail;
3796         }
3797
3798         if (params->supp_oper_classes) {
3799                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3800                             params->supp_oper_classes,
3801                             params->supp_oper_classes_len);
3802                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3803                             params->supp_oper_classes_len,
3804                             params->supp_oper_classes))
3805                         goto fail;
3806         }
3807
3808         os_memset(&upd, 0, sizeof(upd));
3809         upd.set = sta_flags_nl80211(params->flags);
3810         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3811         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3812                    upd.set, upd.mask);
3813         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3814                 goto fail;
3815
3816 #ifdef CONFIG_MESH
3817         if (params->plink_state &&
3818             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3819                        sta_plink_state_nl80211(params->plink_state)))
3820                 goto fail;
3821 #endif /* CONFIG_MESH */
3822
3823         if (params->flags & WPA_STA_WMM) {
3824                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3825
3826                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3827                 if (!wme ||
3828                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3829                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3830                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3831                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3832                                WMM_QOSINFO_STA_SP_MASK))
3833                         goto fail;
3834                 nla_nest_end(msg, wme);
3835         }
3836
3837         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3838         msg = NULL;
3839         if (ret)
3840                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3841                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3842                            strerror(-ret));
3843         if (ret == -EEXIST)
3844                 ret = 0;
3845 fail:
3846         nlmsg_free(msg);
3847         return ret;
3848 }
3849
3850
3851 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3852 {
3853 #ifdef CONFIG_LIBNL3_ROUTE
3854         struct wpa_driver_nl80211_data *drv = bss->drv;
3855         struct rtnl_neigh *rn;
3856         struct nl_addr *nl_addr;
3857         int err;
3858
3859         rn = rtnl_neigh_alloc();
3860         if (!rn)
3861                 return;
3862
3863         rtnl_neigh_set_family(rn, AF_BRIDGE);
3864         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3865         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3866         if (!nl_addr) {
3867                 rtnl_neigh_put(rn);
3868                 return;
3869         }
3870         rtnl_neigh_set_lladdr(rn, nl_addr);
3871
3872         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3873         if (err < 0) {
3874                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3875                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3876                            bss->ifindex, nl_geterror(err));
3877         } else {
3878                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3879                            MACSTR, MAC2STR(addr));
3880         }
3881
3882         nl_addr_put(nl_addr);
3883         rtnl_neigh_put(rn);
3884 #endif /* CONFIG_LIBNL3_ROUTE */
3885 }
3886
3887
3888 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3889                                          int deauth, u16 reason_code)
3890 {
3891         struct wpa_driver_nl80211_data *drv = bss->drv;
3892         struct nl_msg *msg;
3893         int ret;
3894
3895         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3896             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3897             (deauth == 0 &&
3898              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3899                         WLAN_FC_STYPE_DISASSOC)) ||
3900             (deauth == 1 &&
3901              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3902                         WLAN_FC_STYPE_DEAUTH)) ||
3903             (reason_code &&
3904              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3905                 nlmsg_free(msg);
3906                 return -ENOBUFS;
3907         }
3908
3909         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3910         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3911                    " --> %d (%s)",
3912                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3913
3914         if (drv->rtnl_sk)
3915                 rtnl_neigh_delete_fdb_entry(bss, addr);
3916
3917         if (ret == -ENOENT)
3918                 return 0;
3919         return ret;
3920 }
3921
3922
3923 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3924 {
3925         struct nl_msg *msg;
3926         struct wpa_driver_nl80211_data *drv2;
3927
3928         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3929
3930         /* stop listening for EAPOL on this interface */
3931         dl_list_for_each(drv2, &drv->global->interfaces,
3932                          struct wpa_driver_nl80211_data, list)
3933                 del_ifidx(drv2, ifidx);
3934
3935         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3936         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3937                 return;
3938         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3939 }
3940
3941
3942 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3943 {
3944         switch (mode) {
3945         case NL80211_IFTYPE_ADHOC:
3946                 return "ADHOC";
3947         case NL80211_IFTYPE_STATION:
3948                 return "STATION";
3949         case NL80211_IFTYPE_AP:
3950                 return "AP";
3951         case NL80211_IFTYPE_AP_VLAN:
3952                 return "AP_VLAN";
3953         case NL80211_IFTYPE_WDS:
3954                 return "WDS";
3955         case NL80211_IFTYPE_MONITOR:
3956                 return "MONITOR";
3957         case NL80211_IFTYPE_MESH_POINT:
3958                 return "MESH_POINT";
3959         case NL80211_IFTYPE_P2P_CLIENT:
3960                 return "P2P_CLIENT";
3961         case NL80211_IFTYPE_P2P_GO:
3962                 return "P2P_GO";
3963         case NL80211_IFTYPE_P2P_DEVICE:
3964                 return "P2P_DEVICE";
3965         default:
3966                 return "unknown";
3967         }
3968 }
3969
3970
3971 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3972                                      const char *ifname,
3973                                      enum nl80211_iftype iftype,
3974                                      const u8 *addr, int wds,
3975                                      int (*handler)(struct nl_msg *, void *),
3976                                      void *arg)
3977 {
3978         struct nl_msg *msg;
3979         int ifidx;
3980         int ret = -ENOBUFS;
3981
3982         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3983                    iftype, nl80211_iftype_str(iftype));
3984
3985         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3986         if (!msg ||
3987             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3988             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3989                 goto fail;
3990
3991         if (iftype == NL80211_IFTYPE_MONITOR) {
3992                 struct nlattr *flags;
3993
3994                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3995                 if (!flags ||
3996                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3997                         goto fail;
3998
3999                 nla_nest_end(msg, flags);
4000         } else if (wds) {
4001                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4002                         goto fail;
4003         }
4004
4005         /*
4006          * Tell cfg80211 that the interface belongs to the socket that created
4007          * it, and the interface should be deleted when the socket is closed.
4008          */
4009         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4010                 goto fail;
4011
4012         ret = send_and_recv_msgs(drv, msg, handler, arg);
4013         msg = NULL;
4014         if (ret) {
4015         fail:
4016                 nlmsg_free(msg);
4017                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4018                            ifname, ret, strerror(-ret));
4019                 return ret;
4020         }
4021
4022         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4023                 return 0;
4024
4025         ifidx = if_nametoindex(ifname);
4026         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4027                    ifname, ifidx);
4028
4029         if (ifidx <= 0)
4030                 return -1;
4031
4032         /*
4033          * Some virtual interfaces need to process EAPOL packets and events on
4034          * the parent interface. This is used mainly with hostapd.
4035          */
4036         if (drv->hostapd ||
4037             iftype == NL80211_IFTYPE_AP_VLAN ||
4038             iftype == NL80211_IFTYPE_WDS ||
4039             iftype == NL80211_IFTYPE_MONITOR) {
4040                 /* start listening for EAPOL on this interface */
4041                 add_ifidx(drv, ifidx);
4042         }
4043
4044         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4045             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4046                 nl80211_remove_iface(drv, ifidx);
4047                 return -1;
4048         }
4049
4050         return ifidx;
4051 }
4052
4053
4054 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4055                          const char *ifname, enum nl80211_iftype iftype,
4056                          const u8 *addr, int wds,
4057                          int (*handler)(struct nl_msg *, void *),
4058                          void *arg, int use_existing)
4059 {
4060         int ret;
4061
4062         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4063                                         arg);
4064
4065         /* if error occurred and interface exists already */
4066         if (ret == -ENFILE && if_nametoindex(ifname)) {
4067                 if (use_existing) {
4068                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4069                                    ifname);
4070                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4071                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4072                                                addr) < 0 &&
4073                             (linux_set_iface_flags(drv->global->ioctl_sock,
4074                                                    ifname, 0) < 0 ||
4075                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4076                                                 addr) < 0 ||
4077                              linux_set_iface_flags(drv->global->ioctl_sock,
4078                                                    ifname, 1) < 0))
4079                                         return -1;
4080                         return -ENFILE;
4081                 }
4082                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4083
4084                 /* Try to remove the interface that was already there. */
4085                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4086
4087                 /* Try to create the interface again */
4088                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4089                                                 wds, handler, arg);
4090         }
4091
4092         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4093                 wpa_printf(MSG_DEBUG,
4094                            "nl80211: Interface %s created for P2P - disable 11b rates",
4095                            ifname);
4096                 nl80211_disable_11b_rates(drv, ret, 1);
4097         }
4098
4099         return ret;
4100 }
4101
4102
4103 static int nl80211_setup_ap(struct i802_bss *bss)
4104 {
4105         struct wpa_driver_nl80211_data *drv = bss->drv;
4106
4107         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4108                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4109
4110         /*
4111          * Disable Probe Request reporting unless we need it in this way for
4112          * devices that include the AP SME, in the other case (unless using
4113          * monitor iface) we'll get it through the nl_mgmt socket instead.
4114          */
4115         if (!drv->device_ap_sme)
4116                 wpa_driver_nl80211_probe_req_report(bss, 0);
4117
4118         if (!drv->device_ap_sme && !drv->use_monitor)
4119                 if (nl80211_mgmt_subscribe_ap(bss))
4120                         return -1;
4121
4122         if (drv->device_ap_sme && !drv->use_monitor)
4123                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4124                         return -1;
4125
4126         if (!drv->device_ap_sme && drv->use_monitor &&
4127             nl80211_create_monitor_interface(drv) &&
4128             !drv->device_ap_sme)
4129                 return -1;
4130
4131         if (drv->device_ap_sme &&
4132             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4133                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4134                            "Probe Request frame reporting in AP mode");
4135                 /* Try to survive without this */
4136         }
4137
4138         return 0;
4139 }
4140
4141
4142 static void nl80211_teardown_ap(struct i802_bss *bss)
4143 {
4144         struct wpa_driver_nl80211_data *drv = bss->drv;
4145
4146         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4147                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4148         if (drv->device_ap_sme) {
4149                 wpa_driver_nl80211_probe_req_report(bss, 0);
4150                 if (!drv->use_monitor)
4151                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4152         } else if (drv->use_monitor)
4153                 nl80211_remove_monitor_interface(drv);
4154         else
4155                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4156
4157         bss->beacon_set = 0;
4158 }
4159
4160
4161 static int nl80211_send_eapol_data(struct i802_bss *bss,
4162                                    const u8 *addr, const u8 *data,
4163                                    size_t data_len)
4164 {
4165         struct sockaddr_ll ll;
4166         int ret;
4167
4168         if (bss->drv->eapol_tx_sock < 0) {
4169                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4170                 return -1;
4171         }
4172
4173         os_memset(&ll, 0, sizeof(ll));
4174         ll.sll_family = AF_PACKET;
4175         ll.sll_ifindex = bss->ifindex;
4176         ll.sll_protocol = htons(ETH_P_PAE);
4177         ll.sll_halen = ETH_ALEN;
4178         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4179         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4180                      (struct sockaddr *) &ll, sizeof(ll));
4181         if (ret < 0)
4182                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4183                            strerror(errno));
4184
4185         return ret;
4186 }
4187
4188
4189 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4190
4191 static int wpa_driver_nl80211_hapd_send_eapol(
4192         void *priv, const u8 *addr, const u8 *data,
4193         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4194 {
4195         struct i802_bss *bss = priv;
4196         struct wpa_driver_nl80211_data *drv = bss->drv;
4197         struct ieee80211_hdr *hdr;
4198         size_t len;
4199         u8 *pos;
4200         int res;
4201         int qos = flags & WPA_STA_WMM;
4202
4203         if (drv->device_ap_sme || !drv->use_monitor)
4204                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4205
4206         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4207                 data_len;
4208         hdr = os_zalloc(len);
4209         if (hdr == NULL) {
4210                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4211                            (unsigned long) len);
4212                 return -1;
4213         }
4214
4215         hdr->frame_control =
4216                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4217         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4218         if (encrypt)
4219                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4220         if (qos) {
4221                 hdr->frame_control |=
4222                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4223         }
4224
4225         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4226         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4227         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4228         pos = (u8 *) (hdr + 1);
4229
4230         if (qos) {
4231                 /* Set highest priority in QoS header */
4232                 pos[0] = 7;
4233                 pos[1] = 0;
4234                 pos += 2;
4235         }
4236
4237         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4238         pos += sizeof(rfc1042_header);
4239         WPA_PUT_BE16(pos, ETH_P_PAE);
4240         pos += 2;
4241         memcpy(pos, data, data_len);
4242
4243         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4244                                             0, 0, 0, 0);
4245         if (res < 0) {
4246                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4247                            "failed: %d (%s)",
4248                            (unsigned long) len, errno, strerror(errno));
4249         }
4250         os_free(hdr);
4251
4252         return res;
4253 }
4254
4255
4256 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4257                                             unsigned int total_flags,
4258                                             unsigned int flags_or,
4259                                             unsigned int flags_and)
4260 {
4261         struct i802_bss *bss = priv;
4262         struct nl_msg *msg;
4263         struct nlattr *flags;
4264         struct nl80211_sta_flag_update upd;
4265
4266         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4267                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4268                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4269                    !!(total_flags & WPA_STA_AUTHORIZED));
4270
4271         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4272             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4273                 goto fail;
4274
4275         /*
4276          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4277          * can be removed eventually.
4278          */
4279         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4280         if (!flags ||
4281             ((total_flags & WPA_STA_AUTHORIZED) &&
4282              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4283             ((total_flags & WPA_STA_WMM) &&
4284              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4285             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4286              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4287             ((total_flags & WPA_STA_MFP) &&
4288              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4289             ((total_flags & WPA_STA_TDLS_PEER) &&
4290              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4291                 goto fail;
4292
4293         nla_nest_end(msg, flags);
4294
4295         os_memset(&upd, 0, sizeof(upd));
4296         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4297         upd.set = sta_flags_nl80211(flags_or);
4298         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4299                 goto fail;
4300
4301         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4302 fail:
4303         nlmsg_free(msg);
4304         return -ENOBUFS;
4305 }
4306
4307
4308 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4309                                  struct wpa_driver_associate_params *params)
4310 {
4311         enum nl80211_iftype nlmode, old_mode;
4312
4313         if (params->p2p) {
4314                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4315                            "group (GO)");
4316                 nlmode = NL80211_IFTYPE_P2P_GO;
4317         } else
4318                 nlmode = NL80211_IFTYPE_AP;
4319
4320         old_mode = drv->nlmode;
4321         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4322                 nl80211_remove_monitor_interface(drv);
4323                 return -1;
4324         }
4325
4326         if (params->freq.freq &&
4327             nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4328                 if (old_mode != nlmode)
4329                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4330                 nl80211_remove_monitor_interface(drv);
4331                 return -1;
4332         }
4333
4334         return 0;
4335 }
4336
4337
4338 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4339                               int reset_mode)
4340 {
4341         struct nl_msg *msg;
4342         int ret;
4343
4344         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4345         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4346         if (ret) {
4347                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4348                            "(%s)", ret, strerror(-ret));
4349         } else {
4350                 wpa_printf(MSG_DEBUG,
4351                            "nl80211: Leave IBSS request sent successfully");
4352         }
4353
4354         if (reset_mode &&
4355             wpa_driver_nl80211_set_mode(drv->first_bss,
4356                                         NL80211_IFTYPE_STATION)) {
4357                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4358                            "station mode");
4359         }
4360
4361         return ret;
4362 }
4363
4364
4365 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4366                                     struct wpa_driver_associate_params *params)
4367 {
4368         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4369                 return -1;
4370
4371         if (params->htcaps && params->htcaps_mask) {
4372                 int sz = sizeof(struct ieee80211_ht_capabilities);
4373                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4374                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4375                             params->htcaps_mask, sz);
4376                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4377                             params->htcaps) ||
4378                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4379                             params->htcaps_mask))
4380                         return -1;
4381         }
4382
4383 #ifdef CONFIG_VHT_OVERRIDES
4384         if (params->disable_vht) {
4385                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4386                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4387                         return -1;
4388         }
4389
4390         if (params->vhtcaps && params->vhtcaps_mask) {
4391                 int sz = sizeof(struct ieee80211_vht_capabilities);
4392                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4393                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4394                             params->vhtcaps_mask, sz);
4395                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4396                             params->vhtcaps) ||
4397                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4398                             params->vhtcaps_mask))
4399                         return -1;
4400         }
4401 #endif /* CONFIG_VHT_OVERRIDES */
4402
4403         return 0;
4404 }
4405
4406
4407 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4408                                    struct wpa_driver_associate_params *params)
4409 {
4410         struct nl_msg *msg;
4411         int ret = -1;
4412         int count = 0;
4413
4414         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4415
4416         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4417                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4418                            "IBSS mode");
4419                 return -1;
4420         }
4421
4422 retry:
4423         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4424             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4425                 goto fail;
4426
4427         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4428                           params->ssid, params->ssid_len);
4429         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4430                 goto fail;
4431         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4432         drv->ssid_len = params->ssid_len;
4433
4434         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4435             nl80211_put_beacon_int(msg, params->beacon_int))
4436                 goto fail;
4437
4438         ret = nl80211_set_conn_keys(params, msg);
4439         if (ret)
4440                 goto fail;
4441
4442         if (params->bssid && params->fixed_bssid) {
4443                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4444                            MAC2STR(params->bssid));
4445                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4446                         goto fail;
4447         }
4448
4449         if (params->fixed_freq) {
4450                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4451                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4452                         goto fail;
4453         }
4454
4455         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4456             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4457             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4458             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4459                 wpa_printf(MSG_DEBUG, "  * control port");
4460                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4461                         goto fail;
4462         }
4463
4464         if (params->wpa_ie) {
4465                 wpa_hexdump(MSG_DEBUG,
4466                             "  * Extra IEs for Beacon/Probe Response frames",
4467                             params->wpa_ie, params->wpa_ie_len);
4468                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4469                             params->wpa_ie))
4470                         goto fail;
4471         }
4472
4473         if (nl80211_ht_vht_overrides(msg, params) < 0)
4474                 return -1;
4475
4476         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4477         msg = NULL;
4478         if (ret) {
4479                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4480                            ret, strerror(-ret));
4481                 count++;
4482                 if (ret == -EALREADY && count == 1) {
4483                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4484                                    "forced leave");
4485                         nl80211_leave_ibss(drv, 0);
4486                         nlmsg_free(msg);
4487                         goto retry;
4488                 }
4489         } else {
4490                 wpa_printf(MSG_DEBUG,
4491                            "nl80211: Join IBSS request sent successfully");
4492         }
4493
4494 fail:
4495         nlmsg_free(msg);
4496         return ret;
4497 }
4498
4499
4500 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4501                                   struct wpa_driver_associate_params *params,
4502                                   struct nl_msg *msg)
4503 {
4504         if (params->bssid) {
4505                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4506                            MAC2STR(params->bssid));
4507                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4508                         return -1;
4509         }
4510
4511         if (params->bssid_hint) {
4512                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4513                            MAC2STR(params->bssid_hint));
4514                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4515                             params->bssid_hint))
4516                         return -1;
4517         }
4518
4519         if (params->freq.freq) {
4520                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4521                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4522                                 params->freq.freq))
4523                         return -1;
4524                 drv->assoc_freq = params->freq.freq;
4525         } else
4526                 drv->assoc_freq = 0;
4527
4528         if (params->freq_hint) {
4529                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4530                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4531                                 params->freq_hint))
4532                         return -1;
4533         }
4534
4535         if (params->bg_scan_period >= 0) {
4536                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4537                            params->bg_scan_period);
4538                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4539                                 params->bg_scan_period))
4540                         return -1;
4541         }
4542
4543         if (params->ssid) {
4544                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4545                                   params->ssid, params->ssid_len);
4546                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4547                             params->ssid))
4548                         return -1;
4549                 if (params->ssid_len > sizeof(drv->ssid))
4550                         return -1;
4551                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4552                 drv->ssid_len = params->ssid_len;
4553         }
4554
4555         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4556         if (params->wpa_ie &&
4557             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4558                 return -1;
4559
4560         if (params->wpa_proto) {
4561                 enum nl80211_wpa_versions ver = 0;
4562
4563                 if (params->wpa_proto & WPA_PROTO_WPA)
4564                         ver |= NL80211_WPA_VERSION_1;
4565                 if (params->wpa_proto & WPA_PROTO_RSN)
4566                         ver |= NL80211_WPA_VERSION_2;
4567
4568                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4569                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4570                         return -1;
4571         }
4572
4573         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4574                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4575                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4576                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4577                                 cipher))
4578                         return -1;
4579         }
4580
4581         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4582             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4583                 /*
4584                  * This is likely to work even though many drivers do not
4585                  * advertise support for operations without GTK.
4586                  */
4587                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4588         } else if (params->group_suite != WPA_CIPHER_NONE) {
4589                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4590                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4591                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4592                         return -1;
4593         }
4594
4595         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4596             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4597             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4598             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4599             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4600             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4601             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4602             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4603             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4604             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4605                 int mgmt = WLAN_AKM_SUITE_PSK;
4606
4607                 switch (params->key_mgmt_suite) {
4608                 case WPA_KEY_MGMT_CCKM:
4609                         mgmt = WLAN_AKM_SUITE_CCKM;
4610                         break;
4611                 case WPA_KEY_MGMT_IEEE8021X:
4612                         mgmt = WLAN_AKM_SUITE_8021X;
4613                         break;
4614                 case WPA_KEY_MGMT_FT_IEEE8021X:
4615                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4616                         break;
4617                 case WPA_KEY_MGMT_FT_PSK:
4618                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4619                         break;
4620                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4621                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4622                         break;
4623                 case WPA_KEY_MGMT_PSK_SHA256:
4624                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4625                         break;
4626                 case WPA_KEY_MGMT_OSEN:
4627                         mgmt = WLAN_AKM_SUITE_OSEN;
4628                         break;
4629                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4630                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4631                         break;
4632                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4633                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4634                         break;
4635                 case WPA_KEY_MGMT_PSK:
4636                 default:
4637                         mgmt = WLAN_AKM_SUITE_PSK;
4638                         break;
4639                 }
4640                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4641                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4642                         return -1;
4643         }
4644
4645         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4646                 return -1;
4647
4648         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4649             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4650                 return -1;
4651
4652         if (params->rrm_used) {
4653                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4654                 if (!(drv_rrm_flags &
4655                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4656                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4657                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4658                         return -1;
4659         }
4660
4661         if (nl80211_ht_vht_overrides(msg, params) < 0)
4662                 return -1;
4663
4664         if (params->p2p)
4665                 wpa_printf(MSG_DEBUG, "  * P2P group");
4666
4667         return 0;
4668 }
4669
4670
4671 static int wpa_driver_nl80211_try_connect(
4672         struct wpa_driver_nl80211_data *drv,
4673         struct wpa_driver_associate_params *params)
4674 {
4675         struct nl_msg *msg;
4676         enum nl80211_auth_type type;
4677         int ret;
4678         int algs;
4679
4680         if (params->req_key_mgmt_offload && params->psk &&
4681             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4682              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4683              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4684                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4685                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4686                 if (ret)
4687                         return ret;
4688         }
4689
4690         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4691         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4692         if (!msg)
4693                 return -1;
4694
4695         ret = nl80211_connect_common(drv, params, msg);
4696         if (ret)
4697                 goto fail;
4698
4699         algs = 0;
4700         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4701                 algs++;
4702         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4703                 algs++;
4704         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4705                 algs++;
4706         if (algs > 1) {
4707                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4708                            "selection");
4709                 goto skip_auth_type;
4710         }
4711
4712         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4713                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4714         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4715                 type = NL80211_AUTHTYPE_SHARED_KEY;
4716         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4717                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4718         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4719                 type = NL80211_AUTHTYPE_FT;
4720         else
4721                 goto fail;
4722
4723         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4724         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4725                 goto fail;
4726
4727 skip_auth_type:
4728         ret = nl80211_set_conn_keys(params, msg);
4729         if (ret)
4730                 goto fail;
4731
4732         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4733         msg = NULL;
4734         if (ret) {
4735                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4736                            "(%s)", ret, strerror(-ret));
4737         } else {
4738                 wpa_printf(MSG_DEBUG,
4739                            "nl80211: Connect request send successfully");
4740         }
4741
4742 fail:
4743         nlmsg_free(msg);
4744         return ret;
4745
4746 }
4747
4748
4749 static int wpa_driver_nl80211_connect(
4750         struct wpa_driver_nl80211_data *drv,
4751         struct wpa_driver_associate_params *params)
4752 {
4753         int ret;
4754
4755         /* Store the connection attempted bssid for future use */
4756         if (params->bssid)
4757                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4758         else
4759                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4760
4761         ret = wpa_driver_nl80211_try_connect(drv, params);
4762         if (ret == -EALREADY) {
4763                 /*
4764                  * cfg80211 does not currently accept new connections if
4765                  * we are already connected. As a workaround, force
4766                  * disconnection and try again.
4767                  */
4768                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4769                            "disconnecting before reassociation "
4770                            "attempt");
4771                 if (wpa_driver_nl80211_disconnect(
4772                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4773                         return -1;
4774                 ret = wpa_driver_nl80211_try_connect(drv, params);
4775         }
4776         return ret;
4777 }
4778
4779
4780 static int wpa_driver_nl80211_associate(
4781         void *priv, struct wpa_driver_associate_params *params)
4782 {
4783         struct i802_bss *bss = priv;
4784         struct wpa_driver_nl80211_data *drv = bss->drv;
4785         int ret = -1;
4786         struct nl_msg *msg;
4787
4788         nl80211_unmask_11b_rates(bss);
4789
4790         if (params->mode == IEEE80211_MODE_AP)
4791                 return wpa_driver_nl80211_ap(drv, params);
4792
4793         if (params->mode == IEEE80211_MODE_IBSS)
4794                 return wpa_driver_nl80211_ibss(drv, params);
4795
4796         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4797                 enum nl80211_iftype nlmode = params->p2p ?
4798                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4799
4800                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4801                         return -1;
4802                 return wpa_driver_nl80211_connect(drv, params);
4803         }
4804
4805         nl80211_mark_disconnected(drv);
4806
4807         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4808                    drv->ifindex);
4809         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4810         if (!msg)
4811                 return -1;
4812
4813         ret = nl80211_connect_common(drv, params, msg);
4814         if (ret)
4815                 goto fail;
4816
4817         if (params->prev_bssid) {
4818                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4819                            MAC2STR(params->prev_bssid));
4820                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4821                             params->prev_bssid))
4822                         goto fail;
4823         }
4824
4825         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4826         msg = NULL;
4827         if (ret) {
4828                 wpa_dbg(drv->ctx, MSG_DEBUG,
4829                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4830                         ret, strerror(-ret));
4831                 nl80211_dump_scan(drv);
4832         } else {
4833                 wpa_printf(MSG_DEBUG,
4834                            "nl80211: Association request send successfully");
4835         }
4836
4837 fail:
4838         nlmsg_free(msg);
4839         return ret;
4840 }
4841
4842
4843 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4844                             int ifindex, enum nl80211_iftype mode)
4845 {
4846         struct nl_msg *msg;
4847         int ret = -ENOBUFS;
4848
4849         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4850                    ifindex, mode, nl80211_iftype_str(mode));
4851
4852         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4853         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4854                 goto fail;
4855
4856         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4857         msg = NULL;
4858         if (!ret)
4859                 return 0;
4860 fail:
4861         nlmsg_free(msg);
4862         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4863                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4864         return ret;
4865 }
4866
4867
4868 static int wpa_driver_nl80211_set_mode_impl(
4869                 struct i802_bss *bss,
4870                 enum nl80211_iftype nlmode,
4871                 struct hostapd_freq_params *desired_freq_params)
4872 {
4873         struct wpa_driver_nl80211_data *drv = bss->drv;
4874         int ret = -1;
4875         int i;
4876         int was_ap = is_ap_interface(drv->nlmode);
4877         int res;
4878         int mode_switch_res;
4879
4880         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4881         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4882                 mode_switch_res = 0;
4883
4884         if (mode_switch_res == 0) {
4885                 drv->nlmode = nlmode;
4886                 ret = 0;
4887                 goto done;
4888         }
4889
4890         if (mode_switch_res == -ENODEV)
4891                 return -1;
4892
4893         if (nlmode == drv->nlmode) {
4894                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4895                            "requested mode - ignore error");
4896                 ret = 0;
4897                 goto done; /* Already in the requested mode */
4898         }
4899
4900         /* mac80211 doesn't allow mode changes while the device is up, so
4901          * take the device down, try to set the mode again, and bring the
4902          * device back up.
4903          */
4904         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4905                    "interface down");
4906         for (i = 0; i < 10; i++) {
4907                 res = i802_set_iface_flags(bss, 0);
4908                 if (res == -EACCES || res == -ENODEV)
4909                         break;
4910                 if (res != 0) {
4911                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4912                                    "interface down");
4913                         os_sleep(0, 100000);
4914                         continue;
4915                 }
4916
4917                 /*
4918                  * Setting the mode will fail for some drivers if the phy is
4919                  * on a frequency that the mode is disallowed in.
4920                  */
4921                 if (desired_freq_params) {
4922                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4923                         if (res) {
4924                                 wpa_printf(MSG_DEBUG,
4925                                            "nl80211: Failed to set frequency on interface");
4926                         }
4927                 }
4928
4929                 /* Try to set the mode again while the interface is down */
4930                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4931                 if (mode_switch_res == -EBUSY) {
4932                         wpa_printf(MSG_DEBUG,
4933                                    "nl80211: Delaying mode set while interface going down");
4934                         os_sleep(0, 100000);
4935                         continue;
4936                 }
4937                 ret = mode_switch_res;
4938                 break;
4939         }
4940
4941         if (!ret) {
4942                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4943                            "interface is down");
4944                 drv->nlmode = nlmode;
4945                 drv->ignore_if_down_event = 1;
4946         }
4947
4948         /* Bring the interface back up */
4949         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4950         if (res != 0) {
4951                 wpa_printf(MSG_DEBUG,
4952                            "nl80211: Failed to set interface up after switching mode");
4953                 ret = -1;
4954         }
4955
4956 done:
4957         if (ret) {
4958                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4959                            "from %d failed", nlmode, drv->nlmode);
4960                 return ret;
4961         }
4962
4963         if (is_p2p_net_interface(nlmode)) {
4964                 wpa_printf(MSG_DEBUG,
4965                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4966                            bss->ifname);
4967                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4968         } else if (drv->disabled_11b_rates) {
4969                 wpa_printf(MSG_DEBUG,
4970                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4971                            bss->ifname);
4972                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4973         }
4974
4975         if (is_ap_interface(nlmode)) {
4976                 nl80211_mgmt_unsubscribe(bss, "start AP");
4977                 /* Setup additional AP mode functionality if needed */
4978                 if (nl80211_setup_ap(bss))
4979                         return -1;
4980         } else if (was_ap) {
4981                 /* Remove additional AP mode functionality */
4982                 nl80211_teardown_ap(bss);
4983         } else {
4984                 nl80211_mgmt_unsubscribe(bss, "mode change");
4985         }
4986
4987         if (is_mesh_interface(nlmode) &&
4988             nl80211_mgmt_subscribe_mesh(bss))
4989                 return -1;
4990
4991         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4992             !is_mesh_interface(nlmode) &&
4993             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4994                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4995                            "frame processing - ignore for now");
4996
4997         return 0;
4998 }
4999
5000
5001 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5002                                 enum nl80211_iftype nlmode)
5003 {
5004         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5005 }
5006
5007
5008 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5009                                             struct hostapd_freq_params *freq)
5010 {
5011         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5012                                                 freq);
5013 }
5014
5015
5016 static int wpa_driver_nl80211_get_capa(void *priv,
5017                                        struct wpa_driver_capa *capa)
5018 {
5019         struct i802_bss *bss = priv;
5020         struct wpa_driver_nl80211_data *drv = bss->drv;
5021
5022         if (!drv->has_capability)
5023                 return -1;
5024         os_memcpy(capa, &drv->capa, sizeof(*capa));
5025         if (drv->extended_capa && drv->extended_capa_mask) {
5026                 capa->extended_capa = drv->extended_capa;
5027                 capa->extended_capa_mask = drv->extended_capa_mask;
5028                 capa->extended_capa_len = drv->extended_capa_len;
5029         }
5030
5031         return 0;
5032 }
5033
5034
5035 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5036 {
5037         struct i802_bss *bss = priv;
5038         struct wpa_driver_nl80211_data *drv = bss->drv;
5039
5040         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5041                    bss->ifname, drv->operstate, state,
5042                    state ? "UP" : "DORMANT");
5043         drv->operstate = state;
5044         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5045                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5046 }
5047
5048
5049 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5050 {
5051         struct i802_bss *bss = priv;
5052         struct wpa_driver_nl80211_data *drv = bss->drv;
5053         struct nl_msg *msg;
5054         struct nl80211_sta_flag_update upd;
5055         int ret;
5056
5057         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5058                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5059                 return 0;
5060         }
5061
5062         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5063                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5064
5065         os_memset(&upd, 0, sizeof(upd));
5066         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5067         if (authorized)
5068                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5069
5070         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5071             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5072             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5073                 nlmsg_free(msg);
5074                 return -ENOBUFS;
5075         }
5076
5077         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5078         if (!ret)
5079                 return 0;
5080         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5081                    ret, strerror(-ret));
5082         return ret;
5083 }
5084
5085
5086 /* Set kernel driver on given frequency (MHz) */
5087 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5088 {
5089         struct i802_bss *bss = priv;
5090         return nl80211_set_channel(bss, freq, 0);
5091 }
5092
5093
5094 static inline int min_int(int a, int b)
5095 {
5096         if (a < b)
5097                 return a;
5098         return b;
5099 }
5100
5101
5102 static int get_key_handler(struct nl_msg *msg, void *arg)
5103 {
5104         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5105         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5106
5107         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5108                   genlmsg_attrlen(gnlh, 0), NULL);
5109
5110         /*
5111          * TODO: validate the key index and mac address!
5112          * Otherwise, there's a race condition as soon as
5113          * the kernel starts sending key notifications.
5114          */
5115
5116         if (tb[NL80211_ATTR_KEY_SEQ])
5117                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5118                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5119         return NL_SKIP;
5120 }
5121
5122
5123 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5124                            int idx, u8 *seq)
5125 {
5126         struct i802_bss *bss = priv;
5127         struct wpa_driver_nl80211_data *drv = bss->drv;
5128         struct nl_msg *msg;
5129
5130         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5131                                   NL80211_CMD_GET_KEY);
5132         if (!msg ||
5133             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5134             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5135                 nlmsg_free(msg);
5136                 return -ENOBUFS;
5137         }
5138
5139         memset(seq, 0, 6);
5140
5141         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5142 }
5143
5144
5145 static int i802_set_rts(void *priv, int rts)
5146 {
5147         struct i802_bss *bss = priv;
5148         struct wpa_driver_nl80211_data *drv = bss->drv;
5149         struct nl_msg *msg;
5150         int ret;
5151         u32 val;
5152
5153         if (rts >= 2347)
5154                 val = (u32) -1;
5155         else
5156                 val = rts;
5157
5158         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5159             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5160                 nlmsg_free(msg);
5161                 return -ENOBUFS;
5162         }
5163
5164         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5165         if (!ret)
5166                 return 0;
5167         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5168                    "%d (%s)", rts, ret, strerror(-ret));
5169         return ret;
5170 }
5171
5172
5173 static int i802_set_frag(void *priv, int frag)
5174 {
5175         struct i802_bss *bss = priv;
5176         struct wpa_driver_nl80211_data *drv = bss->drv;
5177         struct nl_msg *msg;
5178         int ret;
5179         u32 val;
5180
5181         if (frag >= 2346)
5182                 val = (u32) -1;
5183         else
5184                 val = frag;
5185
5186         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5187             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5188                 nlmsg_free(msg);
5189                 return -ENOBUFS;
5190         }
5191
5192         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5193         if (!ret)
5194                 return 0;
5195         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5196                    "%d: %d (%s)", frag, ret, strerror(-ret));
5197         return ret;
5198 }
5199
5200
5201 static int i802_flush(void *priv)
5202 {
5203         struct i802_bss *bss = priv;
5204         struct nl_msg *msg;
5205         int res;
5206
5207         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5208                    bss->ifname);
5209
5210         /*
5211          * XXX: FIX! this needs to flush all VLANs too
5212          */
5213         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5214         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5215         if (res) {
5216                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5217                            "(%s)", res, strerror(-res));
5218         }
5219         return res;
5220 }
5221
5222
5223 static int get_sta_handler(struct nl_msg *msg, void *arg)
5224 {
5225         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5226         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5227         struct hostap_sta_driver_data *data = arg;
5228         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5229         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5230                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5231                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5232                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5233                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5234                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5235                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5236         };
5237
5238         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5239                   genlmsg_attrlen(gnlh, 0), NULL);
5240
5241         /*
5242          * TODO: validate the interface and mac address!
5243          * Otherwise, there's a race condition as soon as
5244          * the kernel starts sending station notifications.
5245          */
5246
5247         if (!tb[NL80211_ATTR_STA_INFO]) {
5248                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5249                 return NL_SKIP;
5250         }
5251         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5252                              tb[NL80211_ATTR_STA_INFO],
5253                              stats_policy)) {
5254                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5255                 return NL_SKIP;
5256         }
5257
5258         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5259                 data->inactive_msec =
5260                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5261         if (stats[NL80211_STA_INFO_RX_BYTES])
5262                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5263         if (stats[NL80211_STA_INFO_TX_BYTES])
5264                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5265         if (stats[NL80211_STA_INFO_RX_PACKETS])
5266                 data->rx_packets =
5267                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5268         if (stats[NL80211_STA_INFO_TX_PACKETS])
5269                 data->tx_packets =
5270                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5271         if (stats[NL80211_STA_INFO_TX_FAILED])
5272                 data->tx_retry_failed =
5273                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5274
5275         return NL_SKIP;
5276 }
5277
5278 static int i802_read_sta_data(struct i802_bss *bss,
5279                               struct hostap_sta_driver_data *data,
5280                               const u8 *addr)
5281 {
5282         struct nl_msg *msg;
5283
5284         os_memset(data, 0, sizeof(*data));
5285
5286         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5287             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5288                 nlmsg_free(msg);
5289                 return -ENOBUFS;
5290         }
5291
5292         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5293 }
5294
5295
5296 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5297                                     int cw_min, int cw_max, int burst_time)
5298 {
5299         struct i802_bss *bss = priv;
5300         struct wpa_driver_nl80211_data *drv = bss->drv;
5301         struct nl_msg *msg;
5302         struct nlattr *txq, *params;
5303
5304         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5305         if (!msg)
5306                 return -1;
5307
5308         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5309         if (!txq)
5310                 goto fail;
5311
5312         /* We are only sending parameters for a single TXQ at a time */
5313         params = nla_nest_start(msg, 1);
5314         if (!params)
5315                 goto fail;
5316
5317         switch (queue) {
5318         case 0:
5319                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5320                         goto fail;
5321                 break;
5322         case 1:
5323                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5324                         goto fail;
5325                 break;
5326         case 2:
5327                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5328                         goto fail;
5329                 break;
5330         case 3:
5331                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5332                         goto fail;
5333                 break;
5334         }
5335         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5336          * 32 usec, so need to convert the value here. */
5337         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5338                         (burst_time * 100 + 16) / 32) ||
5339             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5340             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5341             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5342                 goto fail;
5343
5344         nla_nest_end(msg, params);
5345
5346         nla_nest_end(msg, txq);
5347
5348         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5349                 return 0;
5350         msg = NULL;
5351 fail:
5352         nlmsg_free(msg);
5353         return -1;
5354 }
5355
5356
5357 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5358                              const char *ifname, int vlan_id)
5359 {
5360         struct wpa_driver_nl80211_data *drv = bss->drv;
5361         struct nl_msg *msg;
5362         int ret;
5363
5364         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5365                    ", ifname=%s[%d], vlan_id=%d)",
5366                    bss->ifname, if_nametoindex(bss->ifname),
5367                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5368         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5369             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5370             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5371                 nlmsg_free(msg);
5372                 return -ENOBUFS;
5373         }
5374
5375         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5376         if (ret < 0) {
5377                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5378                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5379                            MAC2STR(addr), ifname, vlan_id, ret,
5380                            strerror(-ret));
5381         }
5382         return ret;
5383 }
5384
5385
5386 static int i802_get_inact_sec(void *priv, const u8 *addr)
5387 {
5388         struct hostap_sta_driver_data data;
5389         int ret;
5390
5391         data.inactive_msec = (unsigned long) -1;
5392         ret = i802_read_sta_data(priv, &data, addr);
5393         if (ret == -ENOENT)
5394                 return -ENOENT;
5395         if (ret || data.inactive_msec == (unsigned long) -1)
5396                 return -1;
5397         return data.inactive_msec / 1000;
5398 }
5399
5400
5401 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5402 {
5403 #if 0
5404         /* TODO */
5405 #endif
5406         return 0;
5407 }
5408
5409
5410 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5411                            int reason)
5412 {
5413         struct i802_bss *bss = priv;
5414         struct wpa_driver_nl80211_data *drv = bss->drv;
5415         struct ieee80211_mgmt mgmt;
5416
5417         if (is_mesh_interface(drv->nlmode))
5418                 return -1;
5419
5420         if (drv->device_ap_sme)
5421                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5422
5423         memset(&mgmt, 0, sizeof(mgmt));
5424         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5425                                           WLAN_FC_STYPE_DEAUTH);
5426         memcpy(mgmt.da, addr, ETH_ALEN);
5427         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5428         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5429         mgmt.u.deauth.reason_code = host_to_le16(reason);
5430         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5431                                             IEEE80211_HDRLEN +
5432                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5433                                             0);
5434 }
5435
5436
5437 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5438                              int reason)
5439 {
5440         struct i802_bss *bss = priv;
5441         struct wpa_driver_nl80211_data *drv = bss->drv;
5442         struct ieee80211_mgmt mgmt;
5443
5444         if (is_mesh_interface(drv->nlmode))
5445                 return -1;
5446
5447         if (drv->device_ap_sme)
5448                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5449
5450         memset(&mgmt, 0, sizeof(mgmt));
5451         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5452                                           WLAN_FC_STYPE_DISASSOC);
5453         memcpy(mgmt.da, addr, ETH_ALEN);
5454         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5455         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5456         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5457         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5458                                             IEEE80211_HDRLEN +
5459                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5460                                             0);
5461 }
5462
5463
5464 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5465 {
5466         char buf[200], *pos, *end;
5467         int i, res;
5468
5469         pos = buf;
5470         end = pos + sizeof(buf);
5471
5472         for (i = 0; i < drv->num_if_indices; i++) {
5473                 if (!drv->if_indices[i])
5474                         continue;
5475                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5476                 if (os_snprintf_error(end - pos, res))
5477                         break;
5478                 pos += res;
5479         }
5480         *pos = '\0';
5481
5482         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5483                    drv->num_if_indices, buf);
5484 }
5485
5486
5487 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5488 {
5489         int i;
5490         int *old;
5491
5492         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5493                    ifidx);
5494         if (have_ifidx(drv, ifidx)) {
5495                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5496                            ifidx);
5497                 return;
5498         }
5499         for (i = 0; i < drv->num_if_indices; i++) {
5500                 if (drv->if_indices[i] == 0) {
5501                         drv->if_indices[i] = ifidx;
5502                         dump_ifidx(drv);
5503                         return;
5504                 }
5505         }
5506
5507         if (drv->if_indices != drv->default_if_indices)
5508                 old = drv->if_indices;
5509         else
5510                 old = NULL;
5511
5512         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5513                                            sizeof(int));
5514         if (!drv->if_indices) {
5515                 if (!old)
5516                         drv->if_indices = drv->default_if_indices;
5517                 else
5518                         drv->if_indices = old;
5519                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5520                            "interfaces");
5521                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5522                 return;
5523         } else if (!old)
5524                 os_memcpy(drv->if_indices, drv->default_if_indices,
5525                           sizeof(drv->default_if_indices));
5526         drv->if_indices[drv->num_if_indices] = ifidx;
5527         drv->num_if_indices++;
5528         dump_ifidx(drv);
5529 }
5530
5531
5532 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5533 {
5534         int i;
5535
5536         for (i = 0; i < drv->num_if_indices; i++) {
5537                 if (drv->if_indices[i] == ifidx) {
5538                         drv->if_indices[i] = 0;
5539                         break;
5540                 }
5541         }
5542         dump_ifidx(drv);
5543 }
5544
5545
5546 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5547 {
5548         int i;
5549
5550         for (i = 0; i < drv->num_if_indices; i++)
5551                 if (drv->if_indices[i] == ifidx)
5552                         return 1;
5553
5554         return 0;
5555 }
5556
5557
5558 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5559                             const char *bridge_ifname, char *ifname_wds)
5560 {
5561         struct i802_bss *bss = priv;
5562         struct wpa_driver_nl80211_data *drv = bss->drv;
5563         char name[IFNAMSIZ + 1];
5564
5565         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5566         if (ifname_wds)
5567                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5568
5569         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5570                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5571         if (val) {
5572                 if (!if_nametoindex(name)) {
5573                         if (nl80211_create_iface(drv, name,
5574                                                  NL80211_IFTYPE_AP_VLAN,
5575                                                  bss->addr, 1, NULL, NULL, 0) <
5576                             0)
5577                                 return -1;
5578                         if (bridge_ifname &&
5579                             linux_br_add_if(drv->global->ioctl_sock,
5580                                             bridge_ifname, name) < 0)
5581                                 return -1;
5582                 }
5583                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5584                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5585                                    "interface %s up", name);
5586                 }
5587                 return i802_set_sta_vlan(priv, addr, name, 0);
5588         } else {
5589                 if (bridge_ifname)
5590                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5591                                         name);
5592
5593                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5594                 nl80211_remove_iface(drv, if_nametoindex(name));
5595                 return 0;
5596         }
5597 }
5598
5599
5600 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5601 {
5602         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5603         struct sockaddr_ll lladdr;
5604         unsigned char buf[3000];
5605         int len;
5606         socklen_t fromlen = sizeof(lladdr);
5607
5608         len = recvfrom(sock, buf, sizeof(buf), 0,
5609                        (struct sockaddr *)&lladdr, &fromlen);
5610         if (len < 0) {
5611                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5612                            strerror(errno));
5613                 return;
5614         }
5615
5616         if (have_ifidx(drv, lladdr.sll_ifindex))
5617                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5618 }
5619
5620
5621 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5622                              struct i802_bss *bss,
5623                              const char *brname, const char *ifname)
5624 {
5625         int br_ifindex;
5626         char in_br[IFNAMSIZ];
5627
5628         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5629         br_ifindex = if_nametoindex(brname);
5630         if (br_ifindex == 0) {
5631                 /*
5632                  * Bridge was configured, but the bridge device does
5633                  * not exist. Try to add it now.
5634                  */
5635                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5636                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5637                                    "bridge interface %s: %s",
5638                                    brname, strerror(errno));
5639                         return -1;
5640                 }
5641                 bss->added_bridge = 1;
5642                 br_ifindex = if_nametoindex(brname);
5643                 add_ifidx(drv, br_ifindex);
5644         }
5645         bss->br_ifindex = br_ifindex;
5646
5647         if (linux_br_get(in_br, ifname) == 0) {
5648                 if (os_strcmp(in_br, brname) == 0)
5649                         return 0; /* already in the bridge */
5650
5651                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5652                            "bridge %s", ifname, in_br);
5653                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5654                     0) {
5655                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5656                                    "remove interface %s from bridge "
5657                                    "%s: %s",
5658                                    ifname, brname, strerror(errno));
5659                         return -1;
5660                 }
5661         }
5662
5663         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5664                    ifname, brname);
5665         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5666                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5667                            "into bridge %s: %s",
5668                            ifname, brname, strerror(errno));
5669                 return -1;
5670         }
5671         bss->added_if_into_bridge = 1;
5672
5673         return 0;
5674 }
5675
5676
5677 static void *i802_init(struct hostapd_data *hapd,
5678                        struct wpa_init_params *params)
5679 {
5680         struct wpa_driver_nl80211_data *drv;
5681         struct i802_bss *bss;
5682         size_t i;
5683         char master_ifname[IFNAMSIZ];
5684         int ifindex, br_ifindex = 0;
5685         int br_added = 0;
5686
5687         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5688                                           params->global_priv, 1,
5689                                           params->bssid, params->driver_params);
5690         if (bss == NULL)
5691                 return NULL;
5692
5693         drv = bss->drv;
5694
5695         if (linux_br_get(master_ifname, params->ifname) == 0) {
5696                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5697                            params->ifname, master_ifname);
5698                 br_ifindex = if_nametoindex(master_ifname);
5699                 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
5700         } else if ((params->num_bridge == 0 || !params->bridge[0]) &&
5701                    linux_master_get(master_ifname, params->ifname) == 0) {
5702                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in master %s",
5703                         params->ifname, master_ifname);
5704                 /* start listening for EAPOL on the master interface */
5705                 add_ifidx(drv, if_nametoindex(master_ifname));
5706         } else {
5707                 master_ifname[0] = '\0';
5708         }
5709
5710         bss->br_ifindex = br_ifindex;
5711
5712         for (i = 0; i < params->num_bridge; i++) {
5713                 if (params->bridge[i]) {
5714                         ifindex = if_nametoindex(params->bridge[i]);
5715                         if (ifindex)
5716                                 add_ifidx(drv, ifindex);
5717                         if (ifindex == br_ifindex)
5718                                 br_added = 1;
5719                 }
5720         }
5721
5722         /* start listening for EAPOL on the default AP interface */
5723         add_ifidx(drv, drv->ifindex);
5724
5725         if (params->num_bridge && params->bridge[0]) {
5726                 if (i802_check_bridge(drv, bss, params->bridge[0],
5727                                       params->ifname) < 0)
5728                         goto failed;
5729                 if (os_strcmp(params->bridge[0], master_ifname) != 0)
5730                         br_added = 1;
5731         }
5732
5733         if (!br_added && br_ifindex &&
5734             (params->num_bridge == 0 || !params->bridge[0]))
5735                 add_ifidx(drv, br_ifindex);
5736
5737 #ifdef CONFIG_LIBNL3_ROUTE
5738         if (bss->added_if_into_bridge) {
5739                 drv->rtnl_sk = nl_socket_alloc();
5740                 if (drv->rtnl_sk == NULL) {
5741                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5742                         goto failed;
5743                 }
5744
5745                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5746                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5747                                    strerror(errno));
5748                         goto failed;
5749                 }
5750         }
5751 #endif /* CONFIG_LIBNL3_ROUTE */
5752
5753         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5754         if (drv->eapol_sock < 0) {
5755                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5756                            strerror(errno));
5757                 goto failed;
5758         }
5759
5760         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5761         {
5762                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5763                 goto failed;
5764         }
5765
5766         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5767                                params->own_addr))
5768                 goto failed;
5769         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5770
5771         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5772
5773         return bss;
5774
5775 failed:
5776         wpa_driver_nl80211_deinit(bss);
5777         return NULL;
5778 }
5779
5780
5781 static void i802_deinit(void *priv)
5782 {
5783         struct i802_bss *bss = priv;
5784         wpa_driver_nl80211_deinit(bss);
5785 }
5786
5787
5788 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5789         enum wpa_driver_if_type type)
5790 {
5791         switch (type) {
5792         case WPA_IF_STATION:
5793                 return NL80211_IFTYPE_STATION;
5794         case WPA_IF_P2P_CLIENT:
5795         case WPA_IF_P2P_GROUP:
5796                 return NL80211_IFTYPE_P2P_CLIENT;
5797         case WPA_IF_AP_VLAN:
5798                 return NL80211_IFTYPE_AP_VLAN;
5799         case WPA_IF_AP_BSS:
5800                 return NL80211_IFTYPE_AP;
5801         case WPA_IF_P2P_GO:
5802                 return NL80211_IFTYPE_P2P_GO;
5803         case WPA_IF_P2P_DEVICE:
5804                 return NL80211_IFTYPE_P2P_DEVICE;
5805         case WPA_IF_MESH:
5806                 return NL80211_IFTYPE_MESH_POINT;
5807         default:
5808                 return -1;
5809         }
5810 }
5811
5812
5813 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5814 {
5815         struct wpa_driver_nl80211_data *drv;
5816         dl_list_for_each(drv, &global->interfaces,
5817                          struct wpa_driver_nl80211_data, list) {
5818                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5819                         return 1;
5820         }
5821         return 0;
5822 }
5823
5824
5825 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5826 {
5827         unsigned int idx;
5828
5829         if (!drv->global)
5830                 return -1;
5831
5832         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5833         for (idx = 0; idx < 64; idx++) {
5834                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5835                 new_addr[0] ^= idx << 2;
5836                 if (!nl80211_addr_in_use(drv->global, new_addr))
5837                         break;
5838         }
5839         if (idx == 64)
5840                 return -1;
5841
5842         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5843                    MACSTR, MAC2STR(new_addr));
5844
5845         return 0;
5846 }
5847
5848
5849 struct wdev_info {
5850         u64 wdev_id;
5851         int wdev_id_set;
5852         u8 macaddr[ETH_ALEN];
5853 };
5854
5855 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5856 {
5857         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5858         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5859         struct wdev_info *wi = arg;
5860
5861         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5862                   genlmsg_attrlen(gnlh, 0), NULL);
5863         if (tb[NL80211_ATTR_WDEV]) {
5864                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5865                 wi->wdev_id_set = 1;
5866         }
5867
5868         if (tb[NL80211_ATTR_MAC])
5869                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5870                           ETH_ALEN);
5871
5872         return NL_SKIP;
5873 }
5874
5875
5876 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5877                                      const char *ifname, const u8 *addr,
5878                                      void *bss_ctx, void **drv_priv,
5879                                      char *force_ifname, u8 *if_addr,
5880                                      const char *bridge, int use_existing)
5881 {
5882         enum nl80211_iftype nlmode;
5883         struct i802_bss *bss = priv;
5884         struct wpa_driver_nl80211_data *drv = bss->drv;
5885         int ifidx;
5886         int added = 1;
5887
5888         if (addr)
5889                 os_memcpy(if_addr, addr, ETH_ALEN);
5890         nlmode = wpa_driver_nl80211_if_type(type);
5891         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5892                 struct wdev_info p2pdev_info;
5893
5894                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5895                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5896                                              0, nl80211_wdev_handler,
5897                                              &p2pdev_info, use_existing);
5898                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5899                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5900                                    ifname);
5901                         return -1;
5902                 }
5903
5904                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5905                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5906                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5907                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5908                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5909                            ifname,
5910                            (long long unsigned int) p2pdev_info.wdev_id);
5911         } else {
5912                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5913                                              0, NULL, NULL, use_existing);
5914                 if (use_existing && ifidx == -ENFILE) {
5915                         added = 0;
5916                         ifidx = if_nametoindex(ifname);
5917                 } else if (ifidx < 0) {
5918                         return -1;
5919                 }
5920         }
5921
5922         if (!addr) {
5923                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
5924                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5925                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5926                                             ifname, if_addr) < 0) {
5927                         if (added)
5928                                 nl80211_remove_iface(drv, ifidx);
5929                         return -1;
5930                 }
5931         }
5932
5933         if (!addr &&
5934             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5935              type == WPA_IF_P2P_GO || type == WPA_IF_MESH ||
5936              type == WPA_IF_STATION)) {
5937                 /* Enforce unique address */
5938                 u8 new_addr[ETH_ALEN];
5939
5940                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5941                                        new_addr) < 0) {
5942                         if (added)
5943                                 nl80211_remove_iface(drv, ifidx);
5944                         return -1;
5945                 }
5946                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5947                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5948                                    "for interface %s type %d", ifname, type);
5949                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5950                                 if (added)
5951                                         nl80211_remove_iface(drv, ifidx);
5952                                 return -1;
5953                         }
5954                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5955                                                new_addr) < 0) {
5956                                 if (added)
5957                                         nl80211_remove_iface(drv, ifidx);
5958                                 return -1;
5959                         }
5960                 }
5961                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5962         }
5963
5964         if (type == WPA_IF_AP_BSS) {
5965                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5966                 if (new_bss == NULL) {
5967                         if (added)
5968                                 nl80211_remove_iface(drv, ifidx);
5969                         return -1;
5970                 }
5971
5972                 if (bridge &&
5973                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5974                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5975                                    "interface %s to a bridge %s",
5976                                    ifname, bridge);
5977                         if (added)
5978                                 nl80211_remove_iface(drv, ifidx);
5979                         os_free(new_bss);
5980                         return -1;
5981                 }
5982
5983                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5984                 {
5985                         if (added)
5986                                 nl80211_remove_iface(drv, ifidx);
5987                         os_free(new_bss);
5988                         return -1;
5989                 }
5990                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5991                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5992                 new_bss->ifindex = ifidx;
5993                 new_bss->drv = drv;
5994                 new_bss->next = drv->first_bss->next;
5995                 new_bss->freq = drv->first_bss->freq;
5996                 new_bss->ctx = bss_ctx;
5997                 new_bss->added_if = added;
5998                 drv->first_bss->next = new_bss;
5999                 if (drv_priv)
6000                         *drv_priv = new_bss;
6001                 nl80211_init_bss(new_bss);
6002
6003                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6004                 if (nl80211_setup_ap(new_bss))
6005                         return -1;
6006         }
6007
6008         if (drv->global)
6009                 drv->global->if_add_ifindex = ifidx;
6010
6011         /*
6012          * Some virtual interfaces need to process EAPOL packets and events on
6013          * the parent interface. This is used mainly with hostapd.
6014          */
6015         if (ifidx > 0 &&
6016             (drv->hostapd ||
6017              nlmode == NL80211_IFTYPE_AP_VLAN ||
6018              nlmode == NL80211_IFTYPE_WDS ||
6019              nlmode == NL80211_IFTYPE_MONITOR))
6020                 add_ifidx(drv, ifidx);
6021
6022         return 0;
6023 }
6024
6025
6026 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6027                                         enum wpa_driver_if_type type,
6028                                         const char *ifname)
6029 {
6030         struct wpa_driver_nl80211_data *drv = bss->drv;
6031         int ifindex = if_nametoindex(ifname);
6032
6033         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6034                    __func__, type, ifname, ifindex, bss->added_if);
6035         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6036                 nl80211_remove_iface(drv, ifindex);
6037         else if (ifindex > 0 && !bss->added_if) {
6038                 struct wpa_driver_nl80211_data *drv2;
6039                 dl_list_for_each(drv2, &drv->global->interfaces,
6040                                  struct wpa_driver_nl80211_data, list)
6041                         del_ifidx(drv2, ifindex);
6042         }
6043
6044         if (type != WPA_IF_AP_BSS)
6045                 return 0;
6046
6047         if (bss->added_if_into_bridge) {
6048                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6049                                     bss->ifname) < 0)
6050                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6051                                    "interface %s from bridge %s: %s",
6052                                    bss->ifname, bss->brname, strerror(errno));
6053         }
6054         if (bss->added_bridge) {
6055                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6056                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6057                                    "bridge %s: %s",
6058                                    bss->brname, strerror(errno));
6059         }
6060
6061         if (bss != drv->first_bss) {
6062                 struct i802_bss *tbss;
6063
6064                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6065                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6066                         if (tbss->next == bss) {
6067                                 tbss->next = bss->next;
6068                                 /* Unsubscribe management frames */
6069                                 nl80211_teardown_ap(bss);
6070                                 nl80211_destroy_bss(bss);
6071                                 if (!bss->added_if)
6072                                         i802_set_iface_flags(bss, 0);
6073                                 os_free(bss);
6074                                 bss = NULL;
6075                                 break;
6076                         }
6077                 }
6078                 if (bss)
6079                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6080                                    "BSS %p in the list", __func__, bss);
6081         } else {
6082                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6083                 nl80211_teardown_ap(bss);
6084                 if (!bss->added_if && !drv->first_bss->next)
6085                         wpa_driver_nl80211_del_beacon(drv);
6086                 nl80211_destroy_bss(bss);
6087                 if (!bss->added_if)
6088                         i802_set_iface_flags(bss, 0);
6089                 if (drv->first_bss->next) {
6090                         drv->first_bss = drv->first_bss->next;
6091                         drv->ctx = drv->first_bss->ctx;
6092                         os_free(bss);
6093                 } else {
6094                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6095                 }
6096         }
6097
6098         return 0;
6099 }
6100
6101
6102 static int cookie_handler(struct nl_msg *msg, void *arg)
6103 {
6104         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6105         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6106         u64 *cookie = arg;
6107         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6108                   genlmsg_attrlen(gnlh, 0), NULL);
6109         if (tb[NL80211_ATTR_COOKIE])
6110                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6111         return NL_SKIP;
6112 }
6113
6114
6115 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6116                                   unsigned int freq, unsigned int wait,
6117                                   const u8 *buf, size_t buf_len,
6118                                   u64 *cookie_out, int no_cck, int no_ack,
6119                                   int offchanok)
6120 {
6121         struct wpa_driver_nl80211_data *drv = bss->drv;
6122         struct nl_msg *msg;
6123         u64 cookie;
6124         int ret = -1;
6125
6126         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6127                    "no_ack=%d offchanok=%d",
6128                    freq, wait, no_cck, no_ack, offchanok);
6129         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6130
6131         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6132             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6133             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6134             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6135                            drv->test_use_roc_tx) &&
6136              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6137             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6138             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6139             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6140                 goto fail;
6141
6142         cookie = 0;
6143         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6144         msg = NULL;
6145         if (ret) {
6146                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6147                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6148                            freq, wait);
6149         } else {
6150                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6151                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6152                            (long long unsigned int) cookie);
6153
6154                 if (cookie_out)
6155                         *cookie_out = no_ack ? (u64) -1 : cookie;
6156         }
6157
6158 fail:
6159         nlmsg_free(msg);
6160         return ret;
6161 }
6162
6163
6164 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6165                                           unsigned int freq,
6166                                           unsigned int wait_time,
6167                                           const u8 *dst, const u8 *src,
6168                                           const u8 *bssid,
6169                                           const u8 *data, size_t data_len,
6170                                           int no_cck)
6171 {
6172         struct wpa_driver_nl80211_data *drv = bss->drv;
6173         int ret = -1;
6174         u8 *buf;
6175         struct ieee80211_hdr *hdr;
6176
6177         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6178                    "freq=%u MHz wait=%d ms no_cck=%d)",
6179                    drv->ifindex, freq, wait_time, no_cck);
6180
6181         buf = os_zalloc(24 + data_len);
6182         if (buf == NULL)
6183                 return ret;
6184         os_memcpy(buf + 24, data, data_len);
6185         hdr = (struct ieee80211_hdr *) buf;
6186         hdr->frame_control =
6187                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6188         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6189         os_memcpy(hdr->addr2, src, ETH_ALEN);
6190         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6191
6192         if (is_ap_interface(drv->nlmode) &&
6193             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6194              (int) freq == bss->freq || drv->device_ap_sme ||
6195              !drv->use_monitor))
6196                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6197                                                    0, freq, no_cck, 1,
6198                                                    wait_time);
6199         else
6200                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6201                                              24 + data_len,
6202                                              &drv->send_action_cookie,
6203                                              no_cck, 0, 1);
6204
6205         os_free(buf);
6206         return ret;
6207 }
6208
6209
6210 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6211 {
6212         struct i802_bss *bss = priv;
6213         struct wpa_driver_nl80211_data *drv = bss->drv;
6214         struct nl_msg *msg;
6215         int ret;
6216
6217         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6218                    (long long unsigned int) drv->send_action_cookie);
6219         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6220             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6221                 nlmsg_free(msg);
6222                 return;
6223         }
6224
6225         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6226         if (ret)
6227                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6228                            "(%s)", ret, strerror(-ret));
6229 }
6230
6231
6232 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6233                                                 unsigned int duration)
6234 {
6235         struct i802_bss *bss = priv;
6236         struct wpa_driver_nl80211_data *drv = bss->drv;
6237         struct nl_msg *msg;
6238         int ret;
6239         u64 cookie;
6240
6241         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6242             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6243             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6244                 nlmsg_free(msg);
6245                 return -1;
6246         }
6247
6248         cookie = 0;
6249         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6250         if (ret == 0) {
6251                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6252                            "0x%llx for freq=%u MHz duration=%u",
6253                            (long long unsigned int) cookie, freq, duration);
6254                 drv->remain_on_chan_cookie = cookie;
6255                 drv->pending_remain_on_chan = 1;
6256                 return 0;
6257         }
6258         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6259                    "(freq=%d duration=%u): %d (%s)",
6260                    freq, duration, ret, strerror(-ret));
6261         return -1;
6262 }
6263
6264
6265 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6266 {
6267         struct i802_bss *bss = priv;
6268         struct wpa_driver_nl80211_data *drv = bss->drv;
6269         struct nl_msg *msg;
6270         int ret;
6271
6272         if (!drv->pending_remain_on_chan) {
6273                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6274                            "to cancel");
6275                 return -1;
6276         }
6277
6278         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6279                    "0x%llx",
6280                    (long long unsigned int) drv->remain_on_chan_cookie);
6281
6282         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6283         if (!msg ||
6284             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6285                 nlmsg_free(msg);
6286                 return -1;
6287         }
6288
6289         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6290         if (ret == 0)
6291                 return 0;
6292         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6293                    "%d (%s)", ret, strerror(-ret));
6294         return -1;
6295 }
6296
6297
6298 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6299 {
6300         struct wpa_driver_nl80211_data *drv = bss->drv;
6301
6302         if (!report) {
6303                 if (bss->nl_preq && drv->device_ap_sme &&
6304                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6305                     !bss->static_ap) {
6306                         /*
6307                          * Do not disable Probe Request reporting that was
6308                          * enabled in nl80211_setup_ap().
6309                          */
6310                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6311                                    "Probe Request reporting nl_preq=%p while "
6312                                    "in AP mode", bss->nl_preq);
6313                 } else if (bss->nl_preq) {
6314                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6315                                    "reporting nl_preq=%p", bss->nl_preq);
6316                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6317                 }
6318                 return 0;
6319         }
6320
6321         if (bss->nl_preq) {
6322                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6323                            "already on! nl_preq=%p", bss->nl_preq);
6324                 return 0;
6325         }
6326
6327         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6328         if (bss->nl_preq == NULL)
6329                 return -1;
6330         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6331                    "reporting nl_preq=%p", bss->nl_preq);
6332
6333         if (nl80211_register_frame(bss, bss->nl_preq,
6334                                    (WLAN_FC_TYPE_MGMT << 2) |
6335                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6336                                    NULL, 0) < 0)
6337                 goto out_err;
6338
6339         nl80211_register_eloop_read(&bss->nl_preq,
6340                                     wpa_driver_nl80211_event_receive,
6341                                     bss->nl_cb);
6342
6343         return 0;
6344
6345  out_err:
6346         nl_destroy_handles(&bss->nl_preq);
6347         return -1;
6348 }
6349
6350
6351 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6352                                      int ifindex, int disabled)
6353 {
6354         struct nl_msg *msg;
6355         struct nlattr *bands, *band;
6356         int ret;
6357
6358         wpa_printf(MSG_DEBUG,
6359                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6360                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6361                    "no NL80211_TXRATE_LEGACY constraint");
6362
6363         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6364                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6365         if (!msg)
6366                 return -1;
6367
6368         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6369         if (!bands)
6370                 goto fail;
6371
6372         /*
6373          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6374          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6375          * rates. All 5 GHz rates are left enabled.
6376          */
6377         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6378         if (!band ||
6379             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6380                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6381                 goto fail;
6382         nla_nest_end(msg, band);
6383
6384         nla_nest_end(msg, bands);
6385
6386         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6387         if (ret) {
6388                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6389                            "(%s)", ret, strerror(-ret));
6390         } else
6391                 drv->disabled_11b_rates = disabled;
6392
6393         return ret;
6394
6395 fail:
6396         nlmsg_free(msg);
6397         return -1;
6398 }
6399
6400
6401 static int wpa_driver_nl80211_deinit_ap(void *priv)
6402 {
6403         struct i802_bss *bss = priv;
6404         struct wpa_driver_nl80211_data *drv = bss->drv;
6405         if (!is_ap_interface(drv->nlmode))
6406                 return -1;
6407         wpa_driver_nl80211_del_beacon(drv);
6408         bss->beacon_set = 0;
6409
6410         /*
6411          * If the P2P GO interface was dynamically added, then it is
6412          * possible that the interface change to station is not possible.
6413          */
6414         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6415                 return 0;
6416
6417         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6418 }
6419
6420
6421 static int wpa_driver_nl80211_stop_ap(void *priv)
6422 {
6423         struct i802_bss *bss = priv;
6424         struct wpa_driver_nl80211_data *drv = bss->drv;
6425         if (!is_ap_interface(drv->nlmode))
6426                 return -1;
6427         wpa_driver_nl80211_del_beacon(drv);
6428         bss->beacon_set = 0;
6429         return 0;
6430 }
6431
6432
6433 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6434 {
6435         struct i802_bss *bss = priv;
6436         struct wpa_driver_nl80211_data *drv = bss->drv;
6437         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6438                 return -1;
6439
6440         /*
6441          * If the P2P Client interface was dynamically added, then it is
6442          * possible that the interface change to station is not possible.
6443          */
6444         if (bss->if_dynamic)
6445                 return 0;
6446
6447         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6448 }
6449
6450
6451 static void wpa_driver_nl80211_resume(void *priv)
6452 {
6453         struct i802_bss *bss = priv;
6454
6455         if (i802_set_iface_flags(bss, 1))
6456                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6457 }
6458
6459
6460 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6461 {
6462         struct i802_bss *bss = priv;
6463         struct wpa_driver_nl80211_data *drv = bss->drv;
6464         struct nl_msg *msg;
6465         struct nlattr *cqm;
6466
6467         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6468                    "hysteresis=%d", threshold, hysteresis);
6469
6470         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6471             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6472             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6473             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6474                 nlmsg_free(msg);
6475                 return -1;
6476         }
6477         nla_nest_end(msg, cqm);
6478
6479         return send_and_recv_msgs(drv, msg, NULL, NULL);
6480 }
6481
6482
6483 static int get_channel_width(struct nl_msg *msg, void *arg)
6484 {
6485         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6486         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6487         struct wpa_signal_info *sig_change = arg;
6488
6489         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6490                   genlmsg_attrlen(gnlh, 0), NULL);
6491
6492         sig_change->center_frq1 = -1;
6493         sig_change->center_frq2 = -1;
6494         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6495
6496         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6497                 sig_change->chanwidth = convert2width(
6498                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6499                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6500                         sig_change->center_frq1 =
6501                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6502                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6503                         sig_change->center_frq2 =
6504                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6505         }
6506
6507         return NL_SKIP;
6508 }
6509
6510
6511 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6512                                      struct wpa_signal_info *sig)
6513 {
6514         struct nl_msg *msg;
6515
6516         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6517         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6518 }
6519
6520
6521 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6522 {
6523         struct i802_bss *bss = priv;
6524         struct wpa_driver_nl80211_data *drv = bss->drv;
6525         int res;
6526
6527         os_memset(si, 0, sizeof(*si));
6528         res = nl80211_get_link_signal(drv, si);
6529         if (res != 0)
6530                 return res;
6531
6532         res = nl80211_get_channel_width(drv, si);
6533         if (res != 0)
6534                 return res;
6535
6536         return nl80211_get_link_noise(drv, si);
6537 }
6538
6539
6540 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6541                               int encrypt)
6542 {
6543         struct i802_bss *bss = priv;
6544         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6545                                              0, 0, 0, 0);
6546 }
6547
6548
6549 static int nl80211_set_param(void *priv, const char *param)
6550 {
6551         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6552         if (param == NULL)
6553                 return 0;
6554
6555 #ifdef CONFIG_P2P
6556         if (os_strstr(param, "use_p2p_group_interface=1")) {
6557                 struct i802_bss *bss = priv;
6558                 struct wpa_driver_nl80211_data *drv = bss->drv;
6559
6560                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6561                            "interface");
6562                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6563                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6564         }
6565 #endif /* CONFIG_P2P */
6566
6567         if (os_strstr(param, "use_monitor=1")) {
6568                 struct i802_bss *bss = priv;
6569                 struct wpa_driver_nl80211_data *drv = bss->drv;
6570                 drv->use_monitor = 1;
6571         }
6572
6573         if (os_strstr(param, "force_connect_cmd=1")) {
6574                 struct i802_bss *bss = priv;
6575                 struct wpa_driver_nl80211_data *drv = bss->drv;
6576                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6577                 drv->force_connect_cmd = 1;
6578         }
6579
6580         if (os_strstr(param, "no_offchannel_tx=1")) {
6581                 struct i802_bss *bss = priv;
6582                 struct wpa_driver_nl80211_data *drv = bss->drv;
6583                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6584                 drv->test_use_roc_tx = 1;
6585         }
6586
6587         return 0;
6588 }
6589
6590
6591 static void * nl80211_global_init(void)
6592 {
6593         struct nl80211_global *global;
6594         struct netlink_config *cfg;
6595
6596         global = os_zalloc(sizeof(*global));
6597         if (global == NULL)
6598                 return NULL;
6599         global->ioctl_sock = -1;
6600         dl_list_init(&global->interfaces);
6601         global->if_add_ifindex = -1;
6602
6603         cfg = os_zalloc(sizeof(*cfg));
6604         if (cfg == NULL)
6605                 goto err;
6606
6607         cfg->ctx = global;
6608         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6609         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6610         global->netlink = netlink_init(cfg);
6611         if (global->netlink == NULL) {
6612                 os_free(cfg);
6613                 goto err;
6614         }
6615
6616         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6617                 goto err;
6618
6619         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6620         if (global->ioctl_sock < 0) {
6621                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6622                            strerror(errno));
6623                 goto err;
6624         }
6625
6626         return global;
6627
6628 err:
6629         nl80211_global_deinit(global);
6630         return NULL;
6631 }
6632
6633
6634 static void nl80211_global_deinit(void *priv)
6635 {
6636         struct nl80211_global *global = priv;
6637         if (global == NULL)
6638                 return;
6639         if (!dl_list_empty(&global->interfaces)) {
6640                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6641                            "nl80211_global_deinit",
6642                            dl_list_len(&global->interfaces));
6643         }
6644
6645         if (global->netlink)
6646                 netlink_deinit(global->netlink);
6647
6648         nl_destroy_handles(&global->nl);
6649
6650         if (global->nl_event)
6651                 nl80211_destroy_eloop_handle(&global->nl_event);
6652
6653         nl_cb_put(global->nl_cb);
6654
6655         if (global->ioctl_sock >= 0)
6656                 close(global->ioctl_sock);
6657
6658         os_free(global);
6659 }
6660
6661
6662 static const char * nl80211_get_radio_name(void *priv)
6663 {
6664         struct i802_bss *bss = priv;
6665         struct wpa_driver_nl80211_data *drv = bss->drv;
6666         return drv->phyname;
6667 }
6668
6669
6670 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6671                          const u8 *pmkid)
6672 {
6673         struct nl_msg *msg;
6674
6675         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6676             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6677             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6678                 nlmsg_free(msg);
6679                 return -ENOBUFS;
6680         }
6681
6682         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6683 }
6684
6685
6686 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6687 {
6688         struct i802_bss *bss = priv;
6689         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6690         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6691 }
6692
6693
6694 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6695 {
6696         struct i802_bss *bss = priv;
6697         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6698                    MAC2STR(bssid));
6699         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6700 }
6701
6702
6703 static int nl80211_flush_pmkid(void *priv)
6704 {
6705         struct i802_bss *bss = priv;
6706         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6707         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6708 }
6709
6710
6711 static void clean_survey_results(struct survey_results *survey_results)
6712 {
6713         struct freq_survey *survey, *tmp;
6714
6715         if (dl_list_empty(&survey_results->survey_list))
6716                 return;
6717
6718         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6719                               struct freq_survey, list) {
6720                 dl_list_del(&survey->list);
6721                 os_free(survey);
6722         }
6723 }
6724
6725
6726 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6727                        struct dl_list *survey_list)
6728 {
6729         struct freq_survey *survey;
6730
6731         survey = os_zalloc(sizeof(struct freq_survey));
6732         if  (!survey)
6733                 return;
6734
6735         survey->ifidx = ifidx;
6736         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6737         survey->filled = 0;
6738
6739         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6740                 survey->nf = (int8_t)
6741                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6742                 survey->filled |= SURVEY_HAS_NF;
6743         }
6744
6745         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6746                 survey->channel_time =
6747                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6748                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6749         }
6750
6751         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6752                 survey->channel_time_busy =
6753                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6754                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6755         }
6756
6757         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6758                 survey->channel_time_rx =
6759                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6760                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6761         }
6762
6763         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6764                 survey->channel_time_tx =
6765                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6766                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6767         }
6768
6769         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)",
6770                    survey->freq,
6771                    survey->nf,
6772                    (unsigned long int) survey->channel_time,
6773                    (unsigned long int) survey->channel_time_busy,
6774                    (unsigned long int) survey->channel_time_tx,
6775                    (unsigned long int) survey->channel_time_rx,
6776                    survey->filled);
6777
6778         dl_list_add_tail(survey_list, &survey->list);
6779 }
6780
6781
6782 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6783                            unsigned int freq_filter)
6784 {
6785         if (!freq_filter)
6786                 return 1;
6787
6788         return freq_filter == surveyed_freq;
6789 }
6790
6791
6792 static int survey_handler(struct nl_msg *msg, void *arg)
6793 {
6794         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6795         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6796         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6797         struct survey_results *survey_results;
6798         u32 surveyed_freq = 0;
6799         u32 ifidx;
6800
6801         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6802                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6803                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6804         };
6805
6806         survey_results = (struct survey_results *) arg;
6807
6808         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6809                   genlmsg_attrlen(gnlh, 0), NULL);
6810
6811         if (!tb[NL80211_ATTR_IFINDEX])
6812                 return NL_SKIP;
6813
6814         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6815
6816         if (!tb[NL80211_ATTR_SURVEY_INFO])
6817                 return NL_SKIP;
6818
6819         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6820                              tb[NL80211_ATTR_SURVEY_INFO],
6821                              survey_policy))
6822                 return NL_SKIP;
6823
6824         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6825                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6826                 return NL_SKIP;
6827         }
6828
6829         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6830
6831         if (!check_survey_ok(sinfo, surveyed_freq,
6832                              survey_results->freq_filter))
6833                 return NL_SKIP;
6834
6835         if (survey_results->freq_filter &&
6836             survey_results->freq_filter != surveyed_freq) {
6837                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6838                            surveyed_freq);
6839                 return NL_SKIP;
6840         }
6841
6842         add_survey(sinfo, ifidx, &survey_results->survey_list);
6843
6844         return NL_SKIP;
6845 }
6846
6847
6848 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6849 {
6850         struct i802_bss *bss = priv;
6851         struct wpa_driver_nl80211_data *drv = bss->drv;
6852         struct nl_msg *msg;
6853         int err;
6854         union wpa_event_data data;
6855         struct survey_results *survey_results;
6856
6857         os_memset(&data, 0, sizeof(data));
6858         survey_results = &data.survey_results;
6859
6860         dl_list_init(&survey_results->survey_list);
6861
6862         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6863         if (!msg)
6864                 return -ENOBUFS;
6865
6866         if (freq)
6867                 data.survey_results.freq_filter = freq;
6868
6869         do {
6870                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6871                 err = send_and_recv_msgs(drv, msg, survey_handler,
6872                                          survey_results);
6873         } while (err > 0);
6874
6875         if (err)
6876                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6877         else
6878                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6879
6880         clean_survey_results(survey_results);
6881         return err;
6882 }
6883
6884
6885 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
6886                                    const u8 *kck, size_t kck_len,
6887                                    const u8 *replay_ctr)
6888 {
6889         struct i802_bss *bss = priv;
6890         struct wpa_driver_nl80211_data *drv = bss->drv;
6891         struct nlattr *replay_nested;
6892         struct nl_msg *msg;
6893         int ret;
6894
6895         if (!drv->set_rekey_offload)
6896                 return;
6897
6898         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6899         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6900             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6901             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
6902             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
6903             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6904                     replay_ctr)) {
6905                 nl80211_nlmsg_clear(msg);
6906                 nlmsg_free(msg);
6907                 return;
6908         }
6909
6910         nla_nest_end(msg, replay_nested);
6911
6912         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6913         if (ret == -EOPNOTSUPP) {
6914                 wpa_printf(MSG_DEBUG,
6915                            "nl80211: Driver does not support rekey offload");
6916                 drv->set_rekey_offload = 0;
6917         }
6918 }
6919
6920
6921 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6922                                     const u8 *addr, int qos)
6923 {
6924         /* send data frame to poll STA and check whether
6925          * this frame is ACKed */
6926         struct {
6927                 struct ieee80211_hdr hdr;
6928                 u16 qos_ctl;
6929         } STRUCT_PACKED nulldata;
6930         size_t size;
6931
6932         /* Send data frame to poll STA and check whether this frame is ACKed */
6933
6934         os_memset(&nulldata, 0, sizeof(nulldata));
6935
6936         if (qos) {
6937                 nulldata.hdr.frame_control =
6938                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6939                                      WLAN_FC_STYPE_QOS_NULL);
6940                 size = sizeof(nulldata);
6941         } else {
6942                 nulldata.hdr.frame_control =
6943                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6944                                      WLAN_FC_STYPE_NULLFUNC);
6945                 size = sizeof(struct ieee80211_hdr);
6946         }
6947
6948         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6949         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6950         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6951         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6952
6953         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6954                                          0, 0) < 0)
6955                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6956                            "send poll frame");
6957 }
6958
6959 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6960                                 int qos)
6961 {
6962         struct i802_bss *bss = priv;
6963         struct wpa_driver_nl80211_data *drv = bss->drv;
6964         struct nl_msg *msg;
6965         int ret;
6966
6967         if (!drv->poll_command_supported) {
6968                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6969                 return;
6970         }
6971
6972         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6973             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6974                 nlmsg_free(msg);
6975                 return;
6976         }
6977
6978         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6979         if (ret < 0) {
6980                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
6981                            MACSTR " failed: ret=%d (%s)",
6982                            MAC2STR(addr), ret, strerror(-ret));
6983         }
6984 }
6985
6986
6987 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
6988 {
6989         struct nl_msg *msg;
6990
6991         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
6992             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
6993                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
6994                 nlmsg_free(msg);
6995                 return -ENOBUFS;
6996         }
6997         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6998 }
6999
7000
7001 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7002                                      int ctwindow)
7003 {
7004         struct i802_bss *bss = priv;
7005
7006         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7007                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7008
7009         if (opp_ps != -1 || ctwindow != -1) {
7010 #ifdef ANDROID_P2P
7011                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7012 #else /* ANDROID_P2P */
7013                 return -1; /* Not yet supported */
7014 #endif /* ANDROID_P2P */
7015         }
7016
7017         if (legacy_ps == -1)
7018                 return 0;
7019         if (legacy_ps != 0 && legacy_ps != 1)
7020                 return -1; /* Not yet supported */
7021
7022         return nl80211_set_power_save(bss, legacy_ps);
7023 }
7024
7025
7026 static int nl80211_start_radar_detection(void *priv,
7027                                          struct hostapd_freq_params *freq)
7028 {
7029         struct i802_bss *bss = priv;
7030         struct wpa_driver_nl80211_data *drv = bss->drv;
7031         struct nl_msg *msg;
7032         int ret;
7033
7034         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)",
7035                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7036                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7037
7038         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7039                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7040                            "detection");
7041                 return -1;
7042         }
7043
7044         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7045             nl80211_put_freq_params(msg, freq) < 0) {
7046                 nlmsg_free(msg);
7047                 return -1;
7048         }
7049
7050         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7051         if (ret == 0)
7052                 return 0;
7053         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7054                    "%d (%s)", ret, strerror(-ret));
7055         return -1;
7056 }
7057
7058 #ifdef CONFIG_TDLS
7059
7060 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7061                                   u8 dialog_token, u16 status_code,
7062                                   u32 peer_capab, int initiator, const u8 *buf,
7063                                   size_t len)
7064 {
7065         struct i802_bss *bss = priv;
7066         struct wpa_driver_nl80211_data *drv = bss->drv;
7067         struct nl_msg *msg;
7068
7069         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7070                 return -EOPNOTSUPP;
7071
7072         if (!dst)
7073                 return -EINVAL;
7074
7075         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7076             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7077             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7078             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7079             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7080                 goto fail;
7081         if (peer_capab) {
7082                 /*
7083                  * The internal enum tdls_peer_capability definition is
7084                  * currently identical with the nl80211 enum
7085                  * nl80211_tdls_peer_capability, so no conversion is needed
7086                  * here.
7087                  */
7088                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7089                                 peer_capab))
7090                         goto fail;
7091         }
7092         if ((initiator &&
7093              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7094             nla_put(msg, NL80211_ATTR_IE, len, buf))
7095                 goto fail;
7096
7097         return send_and_recv_msgs(drv, msg, NULL, NULL);
7098
7099 fail:
7100         nlmsg_free(msg);
7101         return -ENOBUFS;
7102 }
7103
7104
7105 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7106 {
7107         struct i802_bss *bss = priv;
7108         struct wpa_driver_nl80211_data *drv = bss->drv;
7109         struct nl_msg *msg;
7110         enum nl80211_tdls_operation nl80211_oper;
7111
7112         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7113                 return -EOPNOTSUPP;
7114
7115         switch (oper) {
7116         case TDLS_DISCOVERY_REQ:
7117                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7118                 break;
7119         case TDLS_SETUP:
7120                 nl80211_oper = NL80211_TDLS_SETUP;
7121                 break;
7122         case TDLS_TEARDOWN:
7123                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7124                 break;
7125         case TDLS_ENABLE_LINK:
7126                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7127                 break;
7128         case TDLS_DISABLE_LINK:
7129                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7130                 break;
7131         case TDLS_ENABLE:
7132                 return 0;
7133         case TDLS_DISABLE:
7134                 return 0;
7135         default:
7136                 return -EINVAL;
7137         }
7138
7139         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7140             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7141             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7142                 nlmsg_free(msg);
7143                 return -ENOBUFS;
7144         }
7145
7146         return send_and_recv_msgs(drv, msg, NULL, NULL);
7147 }
7148
7149
7150 static int
7151 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7152                                    const struct hostapd_freq_params *params)
7153 {
7154         struct i802_bss *bss = priv;
7155         struct wpa_driver_nl80211_data *drv = bss->drv;
7156         struct nl_msg *msg;
7157         int ret = -ENOBUFS;
7158
7159         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7160             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7161                 return -EOPNOTSUPP;
7162
7163         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7164                    " oper_class=%u freq=%u",
7165                    MAC2STR(addr), oper_class, params->freq);
7166         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7167         if (!msg ||
7168             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7169             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7170             (ret = nl80211_put_freq_params(msg, params))) {
7171                 nlmsg_free(msg);
7172                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7173                 return ret;
7174         }
7175
7176         return send_and_recv_msgs(drv, msg, NULL, NULL);
7177 }
7178
7179
7180 static int
7181 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7182 {
7183         struct i802_bss *bss = priv;
7184         struct wpa_driver_nl80211_data *drv = bss->drv;
7185         struct nl_msg *msg;
7186
7187         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7188             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7189                 return -EOPNOTSUPP;
7190
7191         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7192                    MAC2STR(addr));
7193         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7194         if (!msg ||
7195             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7196                 nlmsg_free(msg);
7197                 wpa_printf(MSG_DEBUG,
7198                            "nl80211: Could not build TDLS cancel chan switch");
7199                 return -ENOBUFS;
7200         }
7201
7202         return send_and_recv_msgs(drv, msg, NULL, NULL);
7203 }
7204
7205 #endif /* CONFIG TDLS */
7206
7207
7208 static int driver_nl80211_set_key(const char *ifname, void *priv,
7209                                   enum wpa_alg alg, const u8 *addr,
7210                                   int key_idx, int set_tx,
7211                                   const u8 *seq, size_t seq_len,
7212                                   const u8 *key, size_t key_len)
7213 {
7214         struct i802_bss *bss = priv;
7215         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7216                                           set_tx, seq, seq_len, key, key_len);
7217 }
7218
7219
7220 static int driver_nl80211_scan2(void *priv,
7221                                 struct wpa_driver_scan_params *params)
7222 {
7223         struct i802_bss *bss = priv;
7224         return wpa_driver_nl80211_scan(bss, params);
7225 }
7226
7227
7228 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7229                                          int reason_code)
7230 {
7231         struct i802_bss *bss = priv;
7232         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7233 }
7234
7235
7236 static int driver_nl80211_authenticate(void *priv,
7237                                        struct wpa_driver_auth_params *params)
7238 {
7239         struct i802_bss *bss = priv;
7240         return wpa_driver_nl80211_authenticate(bss, params);
7241 }
7242
7243
7244 static void driver_nl80211_deinit(void *priv)
7245 {
7246         struct i802_bss *bss = priv;
7247         wpa_driver_nl80211_deinit(bss);
7248 }
7249
7250
7251 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7252                                     const char *ifname)
7253 {
7254         struct i802_bss *bss = priv;
7255         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7256 }
7257
7258
7259 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7260                                     size_t data_len, int noack,
7261                                     unsigned int freq)
7262 {
7263         struct i802_bss *bss = priv;
7264         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7265                                             freq, 0, 0, 0);
7266 }
7267
7268
7269 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7270 {
7271         struct i802_bss *bss = priv;
7272         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7273 }
7274
7275
7276 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7277                                        const char *ifname, int vlan_id)
7278 {
7279         struct i802_bss *bss = priv;
7280         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7281 }
7282
7283
7284 static int driver_nl80211_read_sta_data(void *priv,
7285                                         struct hostap_sta_driver_data *data,
7286                                         const u8 *addr)
7287 {
7288         struct i802_bss *bss = priv;
7289         return i802_read_sta_data(bss, data, addr);
7290 }
7291
7292
7293 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7294                                       unsigned int wait_time,
7295                                       const u8 *dst, const u8 *src,
7296                                       const u8 *bssid,
7297                                       const u8 *data, size_t data_len,
7298                                       int no_cck)
7299 {
7300         struct i802_bss *bss = priv;
7301         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7302                                               bssid, data, data_len, no_cck);
7303 }
7304
7305
7306 static int driver_nl80211_probe_req_report(void *priv, int report)
7307 {
7308         struct i802_bss *bss = priv;
7309         return wpa_driver_nl80211_probe_req_report(bss, report);
7310 }
7311
7312
7313 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7314                                             const u8 *ies, size_t ies_len)
7315 {
7316         int ret;
7317         struct nl_msg *msg;
7318         struct i802_bss *bss = priv;
7319         struct wpa_driver_nl80211_data *drv = bss->drv;
7320         u16 mdid = WPA_GET_LE16(md);
7321
7322         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7323         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7324             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7325             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7326                 nlmsg_free(msg);
7327                 return -ENOBUFS;
7328         }
7329
7330         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7331         if (ret) {
7332                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7333                            "err=%d (%s)", ret, strerror(-ret));
7334         }
7335
7336         return ret;
7337 }
7338
7339
7340 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7341 {
7342         struct i802_bss *bss = priv;
7343         struct wpa_driver_nl80211_data *drv = bss->drv;
7344
7345         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7346                 return NULL;
7347
7348         return bss->addr;
7349 }
7350
7351
7352 static const char * scan_state_str(enum scan_states scan_state)
7353 {
7354         switch (scan_state) {
7355         case NO_SCAN:
7356                 return "NO_SCAN";
7357         case SCAN_REQUESTED:
7358                 return "SCAN_REQUESTED";
7359         case SCAN_STARTED:
7360                 return "SCAN_STARTED";
7361         case SCAN_COMPLETED:
7362                 return "SCAN_COMPLETED";
7363         case SCAN_ABORTED:
7364                 return "SCAN_ABORTED";
7365         case SCHED_SCAN_STARTED:
7366                 return "SCHED_SCAN_STARTED";
7367         case SCHED_SCAN_STOPPED:
7368                 return "SCHED_SCAN_STOPPED";
7369         case SCHED_SCAN_RESULTS:
7370                 return "SCHED_SCAN_RESULTS";
7371         }
7372
7373         return "??";
7374 }
7375
7376
7377 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7378 {
7379         struct i802_bss *bss = priv;
7380         struct wpa_driver_nl80211_data *drv = bss->drv;
7381         int res;
7382         char *pos, *end;
7383
7384         pos = buf;
7385         end = buf + buflen;
7386
7387         res = os_snprintf(pos, end - pos,
7388                           "ifindex=%d\n"
7389                           "ifname=%s\n"
7390                           "brname=%s\n"
7391                           "addr=" MACSTR "\n"
7392                           "freq=%d\n"
7393                           "%s%s%s%s%s",
7394                           bss->ifindex,
7395                           bss->ifname,
7396                           bss->brname,
7397                           MAC2STR(bss->addr),
7398                           bss->freq,
7399                           bss->beacon_set ? "beacon_set=1\n" : "",
7400                           bss->added_if_into_bridge ?
7401                           "added_if_into_bridge=1\n" : "",
7402                           bss->added_bridge ? "added_bridge=1\n" : "",
7403                           bss->in_deinit ? "in_deinit=1\n" : "",
7404                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7405         if (os_snprintf_error(end - pos, res))
7406                 return pos - buf;
7407         pos += res;
7408
7409         if (bss->wdev_id_set) {
7410                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7411                                   (unsigned long long) bss->wdev_id);
7412                 if (os_snprintf_error(end - pos, res))
7413                         return pos - buf;
7414                 pos += res;
7415         }
7416
7417         res = os_snprintf(pos, end - pos,
7418                           "phyname=%s\n"
7419                           "perm_addr=" MACSTR "\n"
7420                           "drv_ifindex=%d\n"
7421                           "operstate=%d\n"
7422                           "scan_state=%s\n"
7423                           "auth_bssid=" MACSTR "\n"
7424                           "auth_attempt_bssid=" MACSTR "\n"
7425                           "bssid=" MACSTR "\n"
7426                           "prev_bssid=" MACSTR "\n"
7427                           "associated=%d\n"
7428                           "assoc_freq=%u\n"
7429                           "monitor_sock=%d\n"
7430                           "monitor_ifidx=%d\n"
7431                           "monitor_refcount=%d\n"
7432                           "last_mgmt_freq=%u\n"
7433                           "eapol_tx_sock=%d\n"
7434                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7435                           drv->phyname,
7436                           MAC2STR(drv->perm_addr),
7437                           drv->ifindex,
7438                           drv->operstate,
7439                           scan_state_str(drv->scan_state),
7440                           MAC2STR(drv->auth_bssid),
7441                           MAC2STR(drv->auth_attempt_bssid),
7442                           MAC2STR(drv->bssid),
7443                           MAC2STR(drv->prev_bssid),
7444                           drv->associated,
7445                           drv->assoc_freq,
7446                           drv->monitor_sock,
7447                           drv->monitor_ifidx,
7448                           drv->monitor_refcount,
7449                           drv->last_mgmt_freq,
7450                           drv->eapol_tx_sock,
7451                           drv->ignore_if_down_event ?
7452                           "ignore_if_down_event=1\n" : "",
7453                           drv->scan_complete_events ?
7454                           "scan_complete_events=1\n" : "",
7455                           drv->disabled_11b_rates ?
7456                           "disabled_11b_rates=1\n" : "",
7457                           drv->pending_remain_on_chan ?
7458                           "pending_remain_on_chan=1\n" : "",
7459                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7460                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7461                           drv->poll_command_supported ?
7462                           "poll_command_supported=1\n" : "",
7463                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7464                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7465                           drv->retry_auth ? "retry_auth=1\n" : "",
7466                           drv->use_monitor ? "use_monitor=1\n" : "",
7467                           drv->ignore_next_local_disconnect ?
7468                           "ignore_next_local_disconnect=1\n" : "",
7469                           drv->ignore_next_local_deauth ?
7470                           "ignore_next_local_deauth=1\n" : "");
7471         if (os_snprintf_error(end - pos, res))
7472                 return pos - buf;
7473         pos += res;
7474
7475         if (drv->has_capability) {
7476                 res = os_snprintf(pos, end - pos,
7477                                   "capa.key_mgmt=0x%x\n"
7478                                   "capa.enc=0x%x\n"
7479                                   "capa.auth=0x%x\n"
7480                                   "capa.flags=0x%llx\n"
7481                                   "capa.rrm_flags=0x%x\n"
7482                                   "capa.max_scan_ssids=%d\n"
7483                                   "capa.max_sched_scan_ssids=%d\n"
7484                                   "capa.sched_scan_supported=%d\n"
7485                                   "capa.max_match_sets=%d\n"
7486                                   "capa.max_remain_on_chan=%u\n"
7487                                   "capa.max_stations=%u\n"
7488                                   "capa.probe_resp_offloads=0x%x\n"
7489                                   "capa.max_acl_mac_addrs=%u\n"
7490                                   "capa.num_multichan_concurrent=%u\n"
7491                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7492                                   "capa.mac_addr_rand_scan_supported=%d\n"
7493                                   "capa.conc_capab=%u\n"
7494                                   "capa.max_conc_chan_2_4=%u\n"
7495                                   "capa.max_conc_chan_5_0=%u\n",
7496                                   drv->capa.key_mgmt,
7497                                   drv->capa.enc,
7498                                   drv->capa.auth,
7499                                   (unsigned long long) drv->capa.flags,
7500                                   drv->capa.rrm_flags,
7501                                   drv->capa.max_scan_ssids,
7502                                   drv->capa.max_sched_scan_ssids,
7503                                   drv->capa.sched_scan_supported,
7504                                   drv->capa.max_match_sets,
7505                                   drv->capa.max_remain_on_chan,
7506                                   drv->capa.max_stations,
7507                                   drv->capa.probe_resp_offloads,
7508                                   drv->capa.max_acl_mac_addrs,
7509                                   drv->capa.num_multichan_concurrent,
7510                                   drv->capa.mac_addr_rand_sched_scan_supported,
7511                                   drv->capa.mac_addr_rand_scan_supported,
7512                                   drv->capa.conc_capab,
7513                                   drv->capa.max_conc_chan_2_4,
7514                                   drv->capa.max_conc_chan_5_0);
7515                 if (os_snprintf_error(end - pos, res))
7516                         return pos - buf;
7517                 pos += res;
7518         }
7519
7520         return pos - buf;
7521 }
7522
7523
7524 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7525 {
7526         if ((settings->head &&
7527              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7528                      settings->head_len, settings->head)) ||
7529             (settings->tail &&
7530              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7531                      settings->tail_len, settings->tail)) ||
7532             (settings->beacon_ies &&
7533              nla_put(msg, NL80211_ATTR_IE,
7534                      settings->beacon_ies_len, settings->beacon_ies)) ||
7535             (settings->proberesp_ies &&
7536              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7537                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7538             (settings->assocresp_ies &&
7539              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7540                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7541             (settings->probe_resp &&
7542              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7543                      settings->probe_resp_len, settings->probe_resp)))
7544                 return -ENOBUFS;
7545
7546         return 0;
7547 }
7548
7549
7550 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7551 {
7552         struct nl_msg *msg;
7553         struct i802_bss *bss = priv;
7554         struct wpa_driver_nl80211_data *drv = bss->drv;
7555         struct nlattr *beacon_csa;
7556         int ret = -ENOBUFS;
7557
7558         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7559                    settings->cs_count, settings->block_tx,
7560                    settings->freq_params.freq, settings->freq_params.bandwidth,
7561                    settings->freq_params.center_freq1,
7562                    settings->freq_params.center_freq2);
7563
7564         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7565                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7566                 return -EOPNOTSUPP;
7567         }
7568
7569         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7570             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7571                 return -EOPNOTSUPP;
7572
7573         /* check settings validity */
7574         if (!settings->beacon_csa.tail ||
7575             ((settings->beacon_csa.tail_len <=
7576               settings->counter_offset_beacon) ||
7577              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7578               settings->cs_count)))
7579                 return -EINVAL;
7580
7581         if (settings->beacon_csa.probe_resp &&
7582             ((settings->beacon_csa.probe_resp_len <=
7583               settings->counter_offset_presp) ||
7584              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7585               settings->cs_count)))
7586                 return -EINVAL;
7587
7588         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7589             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7590                         settings->cs_count) ||
7591             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7592             (settings->block_tx &&
7593              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7594                 goto error;
7595
7596         /* beacon_after params */
7597         ret = set_beacon_data(msg, &settings->beacon_after);
7598         if (ret)
7599                 goto error;
7600
7601         /* beacon_csa params */
7602         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7603         if (!beacon_csa)
7604                 goto fail;
7605
7606         ret = set_beacon_data(msg, &settings->beacon_csa);
7607         if (ret)
7608                 goto error;
7609
7610         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7611                         settings->counter_offset_beacon) ||
7612             (settings->beacon_csa.probe_resp &&
7613              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7614                          settings->counter_offset_presp)))
7615                 goto fail;
7616
7617         nla_nest_end(msg, beacon_csa);
7618         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7619         if (ret) {
7620                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7621                            ret, strerror(-ret));
7622         }
7623         return ret;
7624
7625 fail:
7626         ret = -ENOBUFS;
7627 error:
7628         nlmsg_free(msg);
7629         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7630         return ret;
7631 }
7632
7633
7634 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7635                           u8 user_priority, u16 admitted_time)
7636 {
7637         struct i802_bss *bss = priv;
7638         struct wpa_driver_nl80211_data *drv = bss->drv;
7639         struct nl_msg *msg;
7640         int ret;
7641
7642         wpa_printf(MSG_DEBUG,
7643                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7644                    tsid, admitted_time, user_priority);
7645
7646         if (!is_sta_interface(drv->nlmode))
7647                 return -ENOTSUP;
7648
7649         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7650         if (!msg ||
7651             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7652             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7653             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7654             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7655                 nlmsg_free(msg);
7656                 return -ENOBUFS;
7657         }
7658
7659         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7660         if (ret)
7661                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7662                            ret, strerror(-ret));
7663         return ret;
7664 }
7665
7666
7667 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7668 {
7669         struct i802_bss *bss = priv;
7670         struct wpa_driver_nl80211_data *drv = bss->drv;
7671         struct nl_msg *msg;
7672         int ret;
7673
7674         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7675
7676         if (!is_sta_interface(drv->nlmode))
7677                 return -ENOTSUP;
7678
7679         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7680             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7681             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7682                 nlmsg_free(msg);
7683                 return -ENOBUFS;
7684         }
7685
7686         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7687         if (ret)
7688                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7689                            ret, strerror(-ret));
7690         return ret;
7691 }
7692
7693
7694 #ifdef CONFIG_TESTING_OPTIONS
7695 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7696 {
7697         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7698         struct wpabuf *buf = arg;
7699
7700         if (!buf)
7701                 return NL_SKIP;
7702
7703         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7704                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7705                 return NL_SKIP;
7706         }
7707
7708         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7709                         genlmsg_attrlen(gnlh, 0));
7710
7711         return NL_SKIP;
7712 }
7713 #endif /* CONFIG_TESTING_OPTIONS */
7714
7715
7716 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7717 {
7718         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7719         struct nlattr *nl_vendor_reply, *nl;
7720         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7721         struct wpabuf *buf = arg;
7722         int rem;
7723
7724         if (!buf)
7725                 return NL_SKIP;
7726
7727         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7728                   genlmsg_attrlen(gnlh, 0), NULL);
7729         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7730
7731         if (!nl_vendor_reply)
7732                 return NL_SKIP;
7733
7734         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7735                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7736                 return NL_SKIP;
7737         }
7738
7739         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7740                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7741         }
7742
7743         return NL_SKIP;
7744 }
7745
7746
7747 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7748                               unsigned int subcmd, const u8 *data,
7749                               size_t data_len, struct wpabuf *buf)
7750 {
7751         struct i802_bss *bss = priv;
7752         struct wpa_driver_nl80211_data *drv = bss->drv;
7753         struct nl_msg *msg;
7754         int ret;
7755
7756 #ifdef CONFIG_TESTING_OPTIONS
7757         if (vendor_id == 0xffffffff) {
7758                 msg = nlmsg_alloc();
7759                 if (!msg)
7760                         return -ENOMEM;
7761
7762                 nl80211_cmd(drv, msg, 0, subcmd);
7763                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7764                     0)
7765                         goto fail;
7766                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7767                 if (ret)
7768                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7769                                    ret);
7770                 return ret;
7771         }
7772 #endif /* CONFIG_TESTING_OPTIONS */
7773
7774         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7775             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7776             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7777             (data &&
7778              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7779                 goto fail;
7780
7781         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7782         if (ret)
7783                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7784                            ret);
7785         return ret;
7786
7787 fail:
7788         nlmsg_free(msg);
7789         return -ENOBUFS;
7790 }
7791
7792
7793 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7794                                u8 qos_map_set_len)
7795 {
7796         struct i802_bss *bss = priv;
7797         struct wpa_driver_nl80211_data *drv = bss->drv;
7798         struct nl_msg *msg;
7799         int ret;
7800
7801         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7802                     qos_map_set, qos_map_set_len);
7803
7804         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7805             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7806                 nlmsg_free(msg);
7807                 return -ENOBUFS;
7808         }
7809
7810         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7811         if (ret)
7812                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7813
7814         return ret;
7815 }
7816
7817
7818 static int nl80211_set_wowlan(void *priv,
7819                               const struct wowlan_triggers *triggers)
7820 {
7821         struct i802_bss *bss = priv;
7822         struct wpa_driver_nl80211_data *drv = bss->drv;
7823         struct nl_msg *msg;
7824         struct nlattr *wowlan_triggers;
7825         int ret;
7826
7827         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7828
7829         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_SET_WOWLAN)) ||
7830             !(wowlan_triggers = nla_nest_start(msg,
7831                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7832             (triggers->any &&
7833              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7834             (triggers->disconnect &&
7835              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7836             (triggers->magic_pkt &&
7837              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7838             (triggers->gtk_rekey_failure &&
7839              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7840             (triggers->eap_identity_req &&
7841              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7842             (triggers->four_way_handshake &&
7843              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7844             (triggers->rfkill_release &&
7845              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7846                 nlmsg_free(msg);
7847                 return -ENOBUFS;
7848         }
7849
7850         nla_nest_end(msg, wowlan_triggers);
7851
7852         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7853         if (ret)
7854                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7855
7856         return ret;
7857 }
7858
7859
7860 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7861 {
7862         struct i802_bss *bss = priv;
7863         struct wpa_driver_nl80211_data *drv = bss->drv;
7864         struct nl_msg *msg;
7865         struct nlattr *params;
7866
7867         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7868
7869         if (!drv->roaming_vendor_cmd_avail) {
7870                 wpa_printf(MSG_DEBUG,
7871                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7872                 return -1;
7873         }
7874
7875         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7876             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7877             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7878                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7879             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7880             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7881                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7882                         QCA_ROAMING_NOT_ALLOWED) ||
7883             (bssid &&
7884              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7885                 nlmsg_free(msg);
7886                 return -1;
7887         }
7888         nla_nest_end(msg, params);
7889
7890         return send_and_recv_msgs(drv, msg, NULL, NULL);
7891 }
7892
7893
7894 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7895 {
7896         struct i802_bss *bss = priv;
7897         struct wpa_driver_nl80211_data *drv = bss->drv;
7898         int new_addr = addr != NULL;
7899
7900         if (!addr)
7901                 addr = drv->perm_addr;
7902
7903         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7904                 return -1;
7905
7906         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7907         {
7908                 wpa_printf(MSG_DEBUG,
7909                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7910                            bss->ifname, MAC2STR(addr));
7911                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7912                                           1) < 0) {
7913                         wpa_printf(MSG_DEBUG,
7914                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7915                 }
7916                 return -1;
7917         }
7918
7919         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7920                    bss->ifname, MAC2STR(addr));
7921         drv->addr_changed = new_addr;
7922         os_memcpy(bss->addr, addr, ETH_ALEN);
7923
7924         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7925         {
7926                 wpa_printf(MSG_DEBUG,
7927                            "nl80211: Could not restore interface UP after set_mac_addr");
7928         }
7929
7930         return 0;
7931 }
7932
7933
7934 #ifdef CONFIG_MESH
7935
7936 static int wpa_driver_nl80211_init_mesh(void *priv)
7937 {
7938         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7939                 wpa_printf(MSG_INFO,
7940                            "nl80211: Failed to set interface into mesh mode");
7941                 return -1;
7942         }
7943         return 0;
7944 }
7945
7946
7947 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
7948                                size_t mesh_id_len)
7949 {
7950         if (mesh_id) {
7951                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
7952                                   mesh_id, mesh_id_len);
7953                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
7954         }
7955
7956         return 0;
7957 }
7958
7959
7960 static int nl80211_join_mesh(struct i802_bss *bss,
7961                              struct wpa_driver_mesh_join_params *params)
7962 {
7963         struct wpa_driver_nl80211_data *drv = bss->drv;
7964         struct nl_msg *msg;
7965         struct nlattr *container;
7966         int ret = -1;
7967
7968         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7969         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7970         if (!msg ||
7971             nl80211_put_freq_params(msg, &params->freq) ||
7972             nl80211_put_basic_rates(msg, params->basic_rates) ||
7973             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
7974             nl80211_put_beacon_int(msg, params->beacon_int))
7975                 goto fail;
7976
7977         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7978
7979         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7980         if (!container)
7981                 goto fail;
7982
7983         if (params->ies) {
7984                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7985                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7986                             params->ies))
7987                         goto fail;
7988         }
7989         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
7990         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
7991                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
7992                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
7993                         goto fail;
7994         }
7995         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
7996             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
7997                 goto fail;
7998         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
7999             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8000                 goto fail;
8001         nla_nest_end(msg, container);
8002
8003         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8004         if (!container)
8005                 goto fail;
8006
8007         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8008             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8009                 goto fail;
8010         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
8011             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8012                         params->max_peer_links))
8013                 goto fail;
8014
8015         /*
8016          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
8017          * the timer could disconnect stations even in that case.
8018          */
8019         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8020                         params->conf.peer_link_timeout)) {
8021                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8022                 goto fail;
8023         }
8024
8025         nla_nest_end(msg, container);
8026
8027         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8028         msg = NULL;
8029         if (ret) {
8030                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8031                            ret, strerror(-ret));
8032                 goto fail;
8033         }
8034         ret = 0;
8035         bss->freq = params->freq.freq;
8036         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8037
8038 fail:
8039         nlmsg_free(msg);
8040         return ret;
8041 }
8042
8043
8044 static int
8045 wpa_driver_nl80211_join_mesh(void *priv,
8046                              struct wpa_driver_mesh_join_params *params)
8047 {
8048         struct i802_bss *bss = priv;
8049         int ret, timeout;
8050
8051         timeout = params->conf.peer_link_timeout;
8052
8053         /* Disable kernel inactivity timer */
8054         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8055                 params->conf.peer_link_timeout = 0;
8056
8057         ret = nl80211_join_mesh(bss, params);
8058         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8059                 wpa_printf(MSG_DEBUG,
8060                            "nl80211: Mesh join retry for peer_link_timeout");
8061                 /*
8062                  * Old kernel does not support setting
8063                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8064                  * into future from peer_link_timeout.
8065                  */
8066                 params->conf.peer_link_timeout = timeout + 60;
8067                 ret = nl80211_join_mesh(priv, params);
8068         }
8069
8070         params->conf.peer_link_timeout = timeout;
8071         return ret;
8072 }
8073
8074
8075 static int wpa_driver_nl80211_leave_mesh(void *priv)
8076 {
8077         struct i802_bss *bss = priv;
8078         struct wpa_driver_nl80211_data *drv = bss->drv;
8079         struct nl_msg *msg;
8080         int ret;
8081
8082         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8083         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8084         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8085         if (ret) {
8086                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8087                            ret, strerror(-ret));
8088         } else {
8089                 wpa_printf(MSG_DEBUG,
8090                            "nl80211: mesh leave request send successfully");
8091         }
8092
8093         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8094                                         NL80211_IFTYPE_STATION)) {
8095                 wpa_printf(MSG_INFO,
8096                            "nl80211: Failed to set interface into station mode");
8097         }
8098         return ret;
8099 }
8100
8101 #endif /* CONFIG_MESH */
8102
8103
8104 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8105                                       const u8 *ipaddr, int prefixlen,
8106                                       const u8 *addr)
8107 {
8108 #ifdef CONFIG_LIBNL3_ROUTE
8109         struct i802_bss *bss = priv;
8110         struct wpa_driver_nl80211_data *drv = bss->drv;
8111         struct rtnl_neigh *rn;
8112         struct nl_addr *nl_ipaddr = NULL;
8113         struct nl_addr *nl_lladdr = NULL;
8114         int family, addrsize;
8115         int res;
8116
8117         if (!ipaddr || prefixlen == 0 || !addr)
8118                 return -EINVAL;
8119
8120         if (bss->br_ifindex == 0) {
8121                 wpa_printf(MSG_DEBUG,
8122                            "nl80211: bridge must be set before adding an ip neigh to it");
8123                 return -1;
8124         }
8125
8126         if (!drv->rtnl_sk) {
8127                 wpa_printf(MSG_DEBUG,
8128                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8129                 return -1;
8130         }
8131
8132         if (version == 4) {
8133                 family = AF_INET;
8134                 addrsize = 4;
8135         } else if (version == 6) {
8136                 family = AF_INET6;
8137                 addrsize = 16;
8138         } else {
8139                 return -EINVAL;
8140         }
8141
8142         rn = rtnl_neigh_alloc();
8143         if (rn == NULL)
8144                 return -ENOMEM;
8145
8146         /* set the destination ip address for neigh */
8147         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8148         if (nl_ipaddr == NULL) {
8149                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8150                 res = -ENOMEM;
8151                 goto errout;
8152         }
8153         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8154         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8155         if (res) {
8156                 wpa_printf(MSG_DEBUG,
8157                            "nl80211: neigh set destination addr failed");
8158                 goto errout;
8159         }
8160
8161         /* set the corresponding lladdr for neigh */
8162         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8163         if (nl_lladdr == NULL) {
8164                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8165                 res = -ENOMEM;
8166                 goto errout;
8167         }
8168         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8169
8170         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8171         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8172
8173         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8174         if (res) {
8175                 wpa_printf(MSG_DEBUG,
8176                            "nl80211: Adding bridge ip neigh failed: %s",
8177                            strerror(errno));
8178         }
8179 errout:
8180         if (nl_lladdr)
8181                 nl_addr_put(nl_lladdr);
8182         if (nl_ipaddr)
8183                 nl_addr_put(nl_ipaddr);
8184         if (rn)
8185                 rtnl_neigh_put(rn);
8186         return res;
8187 #else /* CONFIG_LIBNL3_ROUTE */
8188         return -1;
8189 #endif /* CONFIG_LIBNL3_ROUTE */
8190 }
8191
8192
8193 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8194                                          const u8 *ipaddr)
8195 {
8196 #ifdef CONFIG_LIBNL3_ROUTE
8197         struct i802_bss *bss = priv;
8198         struct wpa_driver_nl80211_data *drv = bss->drv;
8199         struct rtnl_neigh *rn;
8200         struct nl_addr *nl_ipaddr;
8201         int family, addrsize;
8202         int res;
8203
8204         if (!ipaddr)
8205                 return -EINVAL;
8206
8207         if (version == 4) {
8208                 family = AF_INET;
8209                 addrsize = 4;
8210         } else if (version == 6) {
8211                 family = AF_INET6;
8212                 addrsize = 16;
8213         } else {
8214                 return -EINVAL;
8215         }
8216
8217         if (bss->br_ifindex == 0) {
8218                 wpa_printf(MSG_DEBUG,
8219                            "nl80211: bridge must be set to delete an ip neigh");
8220                 return -1;
8221         }
8222
8223         if (!drv->rtnl_sk) {
8224                 wpa_printf(MSG_DEBUG,
8225                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8226                 return -1;
8227         }
8228
8229         rn = rtnl_neigh_alloc();
8230         if (rn == NULL)
8231                 return -ENOMEM;
8232
8233         /* set the destination ip address for neigh */
8234         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8235         if (nl_ipaddr == NULL) {
8236                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8237                 res = -ENOMEM;
8238                 goto errout;
8239         }
8240         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8241         if (res) {
8242                 wpa_printf(MSG_DEBUG,
8243                            "nl80211: neigh set destination addr failed");
8244                 goto errout;
8245         }
8246
8247         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8248
8249         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8250         if (res) {
8251                 wpa_printf(MSG_DEBUG,
8252                            "nl80211: Deleting bridge ip neigh failed: %s",
8253                            strerror(errno));
8254         }
8255 errout:
8256         if (nl_ipaddr)
8257                 nl_addr_put(nl_ipaddr);
8258         if (rn)
8259                 rtnl_neigh_put(rn);
8260         return res;
8261 #else /* CONFIG_LIBNL3_ROUTE */
8262         return -1;
8263 #endif /* CONFIG_LIBNL3_ROUTE */
8264 }
8265
8266
8267 static int linux_write_system_file(const char *path, unsigned int val)
8268 {
8269         char buf[50];
8270         int fd, len;
8271
8272         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8273         if (os_snprintf_error(sizeof(buf), len))
8274                 return -1;
8275
8276         fd = open(path, O_WRONLY);
8277         if (fd < 0)
8278                 return -1;
8279
8280         if (write(fd, buf, len) < 0) {
8281                 wpa_printf(MSG_DEBUG,
8282                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8283                            path, val);
8284                 close(fd);
8285                 return -1;
8286         }
8287         close(fd);
8288
8289         return 0;
8290 }
8291
8292
8293 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8294 {
8295         switch (attr) {
8296         case DRV_BR_PORT_ATTR_PROXYARP:
8297                 return "proxyarp_wifi";
8298         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8299                 return "hairpin_mode";
8300         }
8301
8302         return NULL;
8303 }
8304
8305
8306 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8307                                        unsigned int val)
8308 {
8309         struct i802_bss *bss = priv;
8310         char path[128];
8311         const char *attr_txt;
8312
8313         attr_txt = drv_br_port_attr_str(attr);
8314         if (attr_txt == NULL)
8315                 return -EINVAL;
8316
8317         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8318                     bss->ifname, attr_txt);
8319
8320         if (linux_write_system_file(path, val))
8321                 return -1;
8322
8323         return 0;
8324 }
8325
8326
8327 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8328 {
8329         switch (param) {
8330         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8331                 return "arp_accept";
8332         default:
8333                 return NULL;
8334         }
8335 }
8336
8337
8338 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8339                                        unsigned int val)
8340 {
8341         struct i802_bss *bss = priv;
8342         char path[128];
8343         const char *param_txt;
8344         int ip_version = 4;
8345
8346         if (param == DRV_BR_MULTICAST_SNOOPING) {
8347                 os_snprintf(path, sizeof(path),
8348                             "/sys/devices/virtual/net/%s/bridge/multicast_snooping",
8349                             bss->brname);
8350                 goto set_val;
8351         }
8352
8353         param_txt = drv_br_net_param_str(param);
8354         if (param_txt == NULL)
8355                 return -EINVAL;
8356
8357         switch (param) {
8358                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8359                         ip_version = 4;
8360                         break;
8361                 default:
8362                         return -EINVAL;
8363         }
8364
8365         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8366                     ip_version, bss->brname, param_txt);
8367
8368 set_val:
8369         if (linux_write_system_file(path, val))
8370                 return -1;
8371
8372         return 0;
8373 }
8374
8375
8376 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8377 {
8378         switch (hw_mode) {
8379         case HOSTAPD_MODE_IEEE80211B:
8380                 return QCA_ACS_MODE_IEEE80211B;
8381         case HOSTAPD_MODE_IEEE80211G:
8382                 return QCA_ACS_MODE_IEEE80211G;
8383         case HOSTAPD_MODE_IEEE80211A:
8384                 return QCA_ACS_MODE_IEEE80211A;
8385         case HOSTAPD_MODE_IEEE80211AD:
8386                 return QCA_ACS_MODE_IEEE80211AD;
8387         case HOSTAPD_MODE_IEEE80211ANY:
8388                 return QCA_ACS_MODE_IEEE80211ANY;
8389         default:
8390                 return -1;
8391         }
8392 }
8393
8394
8395 static int add_acs_freq_list(struct nl_msg *msg, const int *freq_list)
8396 {
8397         int i, len, ret;
8398         u32 *freqs;
8399
8400         if (!freq_list)
8401                 return 0;
8402         len = int_array_len(freq_list);
8403         freqs = os_malloc(sizeof(u32) * len);
8404         if (!freqs)
8405                 return -1;
8406         for (i = 0; i < len; i++)
8407                 freqs[i] = freq_list[i];
8408         ret = nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_FREQ_LIST,
8409                       sizeof(u32) * len, freqs);
8410         os_free(freqs);
8411         return ret;
8412 }
8413
8414
8415 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8416 {
8417         struct i802_bss *bss = priv;
8418         struct wpa_driver_nl80211_data *drv = bss->drv;
8419         struct nl_msg *msg;
8420         struct nlattr *data;
8421         int ret;
8422         int mode;
8423
8424         mode = hw_mode_to_qca_acs(params->hw_mode);
8425         if (mode < 0)
8426                 return -1;
8427
8428         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8429             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8430             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8431                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8432             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8433             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8434             (params->ht_enabled &&
8435              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8436             (params->ht40_enabled &&
8437              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED)) ||
8438             (params->vht_enabled &&
8439              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_VHT_ENABLED)) ||
8440             nla_put_u16(msg, QCA_WLAN_VENDOR_ATTR_ACS_CHWIDTH,
8441                         params->ch_width) ||
8442             (params->ch_list_len &&
8443              nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_CH_LIST, params->ch_list_len,
8444                      params->ch_list)) ||
8445             add_acs_freq_list(msg, params->freq_list)) {
8446                 nlmsg_free(msg);
8447                 return -ENOBUFS;
8448         }
8449         nla_nest_end(msg, data);
8450
8451         wpa_printf(MSG_DEBUG,
8452                    "nl80211: ACS Params: HW_MODE: %d HT: %d HT40: %d VHT: %d BW: %d CH_LIST_LEN: %u",
8453                    params->hw_mode, params->ht_enabled, params->ht40_enabled,
8454                    params->vht_enabled, params->ch_width, params->ch_list_len);
8455
8456         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8457         if (ret) {
8458                 wpa_printf(MSG_DEBUG,
8459                            "nl80211: Failed to invoke driver ACS function: %s",
8460                            strerror(errno));
8461         }
8462         return ret;
8463 }
8464
8465
8466 static int nl80211_set_band(void *priv, enum set_band band)
8467 {
8468         struct i802_bss *bss = priv;
8469         struct wpa_driver_nl80211_data *drv = bss->drv;
8470         struct nl_msg *msg;
8471         struct nlattr *data;
8472         int ret;
8473         enum qca_set_band qca_band;
8474
8475         if (!drv->setband_vendor_cmd_avail)
8476                 return -1;
8477
8478         switch (band) {
8479         case WPA_SETBAND_AUTO:
8480                 qca_band = QCA_SETBAND_AUTO;
8481                 break;
8482         case WPA_SETBAND_5G:
8483                 qca_band = QCA_SETBAND_5G;
8484                 break;
8485         case WPA_SETBAND_2G:
8486                 qca_band = QCA_SETBAND_2G;
8487                 break;
8488         default:
8489                 return -1;
8490         }
8491
8492         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8493             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8494             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8495                         QCA_NL80211_VENDOR_SUBCMD_SETBAND) ||
8496             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8497             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_SETBAND_VALUE, qca_band)) {
8498                 nlmsg_free(msg);
8499                 return -ENOBUFS;
8500         }
8501         nla_nest_end(msg, data);
8502
8503         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8504         if (ret) {
8505                 wpa_printf(MSG_DEBUG,
8506                            "nl80211: Driver setband function failed: %s",
8507                            strerror(errno));
8508         }
8509         return ret;
8510 }
8511
8512
8513 struct nl80211_pcl {
8514         unsigned int num;
8515         unsigned int *freq_list;
8516 };
8517
8518 static int preferred_freq_info_handler(struct nl_msg *msg, void *arg)
8519 {
8520         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8521         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8522         struct nl80211_pcl *param = arg;
8523         struct nlattr *nl_vend, *attr;
8524         enum qca_iface_type iface_type;
8525         struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
8526         unsigned int num, max_num;
8527         u32 *freqs;
8528
8529         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8530                   genlmsg_attrlen(gnlh, 0), NULL);
8531
8532         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
8533         if (!nl_vend)
8534                 return NL_SKIP;
8535
8536         nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
8537                   nla_data(nl_vend), nla_len(nl_vend), NULL);
8538
8539         attr = tb_vendor[
8540                 QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE];
8541         if (!attr) {
8542                 wpa_printf(MSG_ERROR, "nl80211: iface_type couldn't be found");
8543                 param->num = 0;
8544                 return NL_SKIP;
8545         }
8546
8547         iface_type = (enum qca_iface_type) nla_get_u32(attr);
8548         wpa_printf(MSG_DEBUG, "nl80211: Driver returned iface_type=%d",
8549                    iface_type);
8550
8551         attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST];
8552         if (!attr) {
8553                 wpa_printf(MSG_ERROR,
8554                            "nl80211: preferred_freq_list couldn't be found");
8555                 param->num = 0;
8556                 return NL_SKIP;
8557         }
8558
8559         /*
8560          * param->num has the maximum number of entries for which there
8561          * is room in the freq_list provided by the caller.
8562          */
8563         freqs = nla_data(attr);
8564         max_num = nla_len(attr) / sizeof(u32);
8565         if (max_num > param->num)
8566                 max_num = param->num;
8567         for (num = 0; num < max_num; num++)
8568                 param->freq_list[num] = freqs[num];
8569         param->num = num;
8570
8571         return NL_SKIP;
8572 }
8573
8574
8575 static int nl80211_get_pref_freq_list(void *priv,
8576                                       enum wpa_driver_if_type if_type,
8577                                       unsigned int *num,
8578                                       unsigned int *freq_list)
8579 {
8580         struct i802_bss *bss = priv;
8581         struct wpa_driver_nl80211_data *drv = bss->drv;
8582         struct nl_msg *msg;
8583         int ret;
8584         unsigned int i;
8585         struct nlattr *params;
8586         struct nl80211_pcl param;
8587         enum qca_iface_type iface_type;
8588
8589         if (!drv->get_pref_freq_list)
8590                 return -1;
8591
8592         switch (if_type) {
8593         case WPA_IF_STATION:
8594                 iface_type = QCA_IFACE_TYPE_STA;
8595                 break;
8596         case WPA_IF_AP_BSS:
8597                 iface_type = QCA_IFACE_TYPE_AP;
8598                 break;
8599         case WPA_IF_P2P_GO:
8600                 iface_type = QCA_IFACE_TYPE_P2P_GO;
8601                 break;
8602         case WPA_IF_P2P_CLIENT:
8603                 iface_type = QCA_IFACE_TYPE_P2P_CLIENT;
8604                 break;
8605         case WPA_IF_IBSS:
8606                 iface_type = QCA_IFACE_TYPE_IBSS;
8607                 break;
8608         case WPA_IF_TDLS:
8609                 iface_type = QCA_IFACE_TYPE_TDLS;
8610                 break;
8611         default:
8612                 return -1;
8613         }
8614
8615         param.num = *num;
8616         param.freq_list = freq_list;
8617
8618         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8619             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8620             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8621             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8622                         QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST) ||
8623             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8624             nla_put_u32(msg,
8625                         QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE,
8626                         iface_type)) {
8627                 wpa_printf(MSG_ERROR,
8628                            "%s: err in adding vendor_cmd and vendor_data",
8629                            __func__);
8630                 nlmsg_free(msg);
8631                 return -1;
8632         }
8633         nla_nest_end(msg, params);
8634
8635         os_memset(freq_list, 0, *num * sizeof(freq_list[0]));
8636         ret = send_and_recv_msgs(drv, msg, preferred_freq_info_handler, &param);
8637         if (ret) {
8638                 wpa_printf(MSG_ERROR,
8639                            "%s: err in send_and_recv_msgs", __func__);
8640                 return ret;
8641         }
8642
8643         *num = param.num;
8644
8645         for (i = 0; i < *num; i++) {
8646                 wpa_printf(MSG_DEBUG, "nl80211: preferred_channel_list[%d]=%d",
8647                            i, freq_list[i]);
8648         }
8649
8650         return 0;
8651 }
8652
8653
8654 static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
8655 {
8656         struct i802_bss *bss = priv;
8657         struct wpa_driver_nl80211_data *drv = bss->drv;
8658         struct nl_msg *msg;
8659         int ret;
8660         struct nlattr *params;
8661
8662         if (!drv->set_prob_oper_freq)
8663                 return -1;
8664
8665         wpa_printf(MSG_DEBUG,
8666                    "nl80211: Set P2P probable operating freq %u for ifindex %d",
8667                    freq, bss->ifindex);
8668
8669         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8670             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8671             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8672                         QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL) ||
8673             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8674             nla_put_u32(msg,
8675                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_IFACE_TYPE,
8676                         QCA_IFACE_TYPE_P2P_CLIENT) ||
8677             nla_put_u32(msg,
8678                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_FREQ,
8679                         freq)) {
8680                 wpa_printf(MSG_ERROR,
8681                            "%s: err in adding vendor_cmd and vendor_data",
8682                            __func__);
8683                 nlmsg_free(msg);
8684                 return -1;
8685         }
8686         nla_nest_end(msg, params);
8687
8688         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8689         msg = NULL;
8690         if (ret) {
8691                 wpa_printf(MSG_ERROR, "%s: err in send_and_recv_msgs",
8692                            __func__);
8693                 return ret;
8694         }
8695         nlmsg_free(msg);
8696         return 0;
8697 }
8698
8699
8700 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8701         .name = "nl80211",
8702         .desc = "Linux nl80211/cfg80211",
8703         .get_bssid = wpa_driver_nl80211_get_bssid,
8704         .get_ssid = wpa_driver_nl80211_get_ssid,
8705         .set_key = driver_nl80211_set_key,
8706         .scan2 = driver_nl80211_scan2,
8707         .sched_scan = wpa_driver_nl80211_sched_scan,
8708         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8709         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8710         .deauthenticate = driver_nl80211_deauthenticate,
8711         .authenticate = driver_nl80211_authenticate,
8712         .associate = wpa_driver_nl80211_associate,
8713         .global_init = nl80211_global_init,
8714         .global_deinit = nl80211_global_deinit,
8715         .init2 = wpa_driver_nl80211_init,
8716         .deinit = driver_nl80211_deinit,
8717         .get_capa = wpa_driver_nl80211_get_capa,
8718         .set_operstate = wpa_driver_nl80211_set_operstate,
8719         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8720         .set_country = wpa_driver_nl80211_set_country,
8721         .get_country = wpa_driver_nl80211_get_country,
8722         .set_ap = wpa_driver_nl80211_set_ap,
8723         .set_acl = wpa_driver_nl80211_set_acl,
8724         .if_add = wpa_driver_nl80211_if_add,
8725         .if_remove = driver_nl80211_if_remove,
8726         .send_mlme = driver_nl80211_send_mlme,
8727         .get_hw_feature_data = nl80211_get_hw_feature_data,
8728         .sta_add = wpa_driver_nl80211_sta_add,
8729         .sta_remove = driver_nl80211_sta_remove,
8730         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8731         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8732         .hapd_init = i802_init,
8733         .hapd_deinit = i802_deinit,
8734         .set_wds_sta = i802_set_wds_sta,
8735         .get_seqnum = i802_get_seqnum,
8736         .flush = i802_flush,
8737         .get_inact_sec = i802_get_inact_sec,
8738         .sta_clear_stats = i802_sta_clear_stats,
8739         .set_rts = i802_set_rts,
8740         .set_frag = i802_set_frag,
8741         .set_tx_queue_params = i802_set_tx_queue_params,
8742         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8743         .sta_deauth = i802_sta_deauth,
8744         .sta_disassoc = i802_sta_disassoc,
8745         .read_sta_data = driver_nl80211_read_sta_data,
8746         .set_freq = i802_set_freq,
8747         .send_action = driver_nl80211_send_action,
8748         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8749         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8750         .cancel_remain_on_channel =
8751         wpa_driver_nl80211_cancel_remain_on_channel,
8752         .probe_req_report = driver_nl80211_probe_req_report,
8753         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8754         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8755         .resume = wpa_driver_nl80211_resume,
8756         .signal_monitor = nl80211_signal_monitor,
8757         .signal_poll = nl80211_signal_poll,
8758         .send_frame = nl80211_send_frame,
8759         .set_param = nl80211_set_param,
8760         .get_radio_name = nl80211_get_radio_name,
8761         .add_pmkid = nl80211_add_pmkid,
8762         .remove_pmkid = nl80211_remove_pmkid,
8763         .flush_pmkid = nl80211_flush_pmkid,
8764         .set_rekey_info = nl80211_set_rekey_info,
8765         .poll_client = nl80211_poll_client,
8766         .set_p2p_powersave = nl80211_set_p2p_powersave,
8767         .start_dfs_cac = nl80211_start_radar_detection,
8768         .stop_ap = wpa_driver_nl80211_stop_ap,
8769 #ifdef CONFIG_TDLS
8770         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8771         .tdls_oper = nl80211_tdls_oper,
8772         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8773         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8774 #endif /* CONFIG_TDLS */
8775         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8776         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8777         .get_survey = wpa_driver_nl80211_get_survey,
8778         .status = wpa_driver_nl80211_status,
8779         .switch_channel = nl80211_switch_channel,
8780 #ifdef ANDROID_P2P
8781         .set_noa = wpa_driver_set_p2p_noa,
8782         .get_noa = wpa_driver_get_p2p_noa,
8783         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8784 #endif /* ANDROID_P2P */
8785 #ifdef ANDROID
8786 #ifndef ANDROID_LIB_STUB
8787         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8788 #endif /* !ANDROID_LIB_STUB */
8789 #endif /* ANDROID */
8790         .vendor_cmd = nl80211_vendor_cmd,
8791         .set_qos_map = nl80211_set_qos_map,
8792         .set_wowlan = nl80211_set_wowlan,
8793         .roaming = nl80211_roaming,
8794         .set_mac_addr = nl80211_set_mac_addr,
8795 #ifdef CONFIG_MESH
8796         .init_mesh = wpa_driver_nl80211_init_mesh,
8797         .join_mesh = wpa_driver_nl80211_join_mesh,
8798         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8799 #endif /* CONFIG_MESH */
8800         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8801         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8802         .br_port_set_attr = wpa_driver_br_port_set_attr,
8803         .br_set_net_param = wpa_driver_br_set_net_param,
8804         .add_tx_ts = nl80211_add_ts,
8805         .del_tx_ts = nl80211_del_ts,
8806         .do_acs = wpa_driver_do_acs,
8807         .set_band = nl80211_set_band,
8808         .get_pref_freq_list = nl80211_get_pref_freq_list,
8809         .set_prob_oper_freq = nl80211_set_prob_oper_freq,
8810 };