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                                   const u16 *csa_offs, size_t csa_offs_len);
 181 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 182                                                int report);
 183
 184 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 185 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 186 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 187
 188 static int nl80211_set_channel(struct i802_bss *bss,
 189                                struct hostapd_freq_params *freq, int set_chan);
 190 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 191                                      int ifindex, int disabled);
 192
 193 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 194                               int reset_mode);
 195
 196 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 197 static int nl80211_set_param(void *priv, const char *param);
 198
 199
 200 /* Converts nl80211_chan_width to a common format */
 201 enum chan_width convert2width(int width)
 202 {
 203         switch (width) {
 204         case NL80211_CHAN_WIDTH_20_NOHT:
 205                 return CHAN_WIDTH_20_NOHT;
 206         case NL80211_CHAN_WIDTH_20:
 207                 return CHAN_WIDTH_20;
 208         case NL80211_CHAN_WIDTH_40:
 209                 return CHAN_WIDTH_40;
 210         case NL80211_CHAN_WIDTH_80:
 211                 return CHAN_WIDTH_80;
 212         case NL80211_CHAN_WIDTH_80P80:
 213                 return CHAN_WIDTH_80P80;
 214         case NL80211_CHAN_WIDTH_160:
 215                 return CHAN_WIDTH_160;
 216         }
 217         return CHAN_WIDTH_UNKNOWN;
 218 }
 219
 220
 221 int is_ap_interface(enum nl80211_iftype nlmode)
 222 {
 223         return nlmode == NL80211_IFTYPE_AP ||
 224                 nlmode == NL80211_IFTYPE_P2P_GO;
 225 }
 226
 227
 228 int is_sta_interface(enum nl80211_iftype nlmode)
 229 {
 230         return nlmode == NL80211_IFTYPE_STATION ||
 231                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 232 }
 233
 234
 235 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 236 {
 237         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 238                 nlmode == NL80211_IFTYPE_P2P_GO;
 239 }
 240
 241
 242 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 243                                   int ifindex)
 244 {
 245         struct i802_bss *bss;
 246
 247         for (bss = drv->first_bss; bss; bss = bss->next) {
 248                 if (bss->ifindex == ifindex)
 249                         return bss;
 250         }
 251
 252         return NULL;
 253 }
 254
 255
 256 static int is_mesh_interface(enum nl80211_iftype nlmode)
 257 {
 258         return nlmode == NL80211_IFTYPE_MESH_POINT;
 259 }
 260
 261
 262 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 263 {
 264         if (drv->associated)
 265                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 266         drv->associated = 0;
 267         os_memset(drv->bssid, 0, ETH_ALEN);
 268 }
 269
 270
 271 /* nl80211 code */
 272 static int ack_handler(struct nl_msg *msg, void *arg)
 273 {
 274         int *err = arg;
 275         *err = 0;
 276         return NL_STOP;
 277 }
 278
 279 static int finish_handler(struct nl_msg *msg, void *arg)
 280 {
 281         int *ret = arg;
 282         *ret = 0;
 283         return NL_SKIP;
 284 }
 285
 286 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 287                          void *arg)
 288 {
 289         int *ret = arg;
 290         *ret = err->error;
 291         return NL_SKIP;
 292 }
 293
 294
 295 static int no_seq_check(struct nl_msg *msg, void *arg)
 296 {
 297         return NL_OK;
 298 }
 299
 300
 301 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 302 {
 303         /*
 304          * Clear nlmsg data, e.g., to make sure key material is not left in
 305          * heap memory for unnecessarily long time.
 306          */
 307         if (msg) {
 308                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 309                 void *data = nlmsg_data(hdr);
 310                 /*
 311                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 312                  * only libnl were to maintain a stable API.. Neither will work
 313                  * with all released versions, so just calculate the length
 314                  * here.
 315                  */
 316                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 317
 318                 os_memset(data, 0, len);
 319         }
 320 }
 321
 322
 323 static int send_and_recv(struct nl80211_global *global,
 324                          struct nl_handle *nl_handle, struct nl_msg *msg,
 325                          int (*valid_handler)(struct nl_msg *, void *),
 326                          void *valid_data)
 327 {
 328         struct nl_cb *cb;
 329         int err = -ENOMEM;
 330
 331         if (!msg)
 332                 return -ENOMEM;
 333
 334         cb = nl_cb_clone(global->nl_cb);
 335         if (!cb)
 336                 goto out;
 337
 338         err = nl_send_auto_complete(nl_handle, msg);
 339         if (err < 0)
 340                 goto out;
 341
 342         err = 1;
 343
 344         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 345         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 346         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 347
 348         if (valid_handler)
 349                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 350                           valid_handler, valid_data);
 351
 352         while (err > 0) {
 353                 int res = nl_recvmsgs(nl_handle, cb);
 354                 if (res < 0) {
 355                         wpa_printf(MSG_INFO,
 356                                    "nl80211: %s->nl_recvmsgs failed: %d",
 357                                    __func__, res);
 358                 }
 359         }
 360  out:
 361         nl_cb_put(cb);
 362         if (!valid_handler && valid_data == (void *) -1)
 363                 nl80211_nlmsg_clear(msg);
 364         nlmsg_free(msg);
 365         return err;
 366 }
 367
 368
 369 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 370                        struct nl_msg *msg,
 371                        int (*valid_handler)(struct nl_msg *, void *),
 372                        void *valid_data)
 373 {
 374         return send_and_recv(drv->global, drv->global->nl, msg,
 375                              valid_handler, valid_data);
 376 }
 377
 378
 379 struct family_data {
 380         const char *group;
 381         int id;
 382 };
 383
 384
 385 static int family_handler(struct nl_msg *msg, void *arg)
 386 {
 387         struct family_data *res = arg;
 388         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 389         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 390         struct nlattr *mcgrp;
 391         int i;
 392
 393         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 394                   genlmsg_attrlen(gnlh, 0), NULL);
 395         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 396                 return NL_SKIP;
 397
 398         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 399                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 400                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 401                           nla_len(mcgrp), NULL);
 402                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 403                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 404                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 405                                res->group,
 406                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 407                         continue;
 408                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 409                 break;
 410         };
 411
 412         return NL_SKIP;
 413 }
 414
 415
 416 static int nl_get_multicast_id(struct nl80211_global *global,
 417                                const char *family, const char *group)
 418 {
 419         struct nl_msg *msg;
 420         int ret;
 421         struct family_data res = { group, -ENOENT };
 422
 423         msg = nlmsg_alloc();
 424         if (!msg)
 425                 return -ENOMEM;
 426         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 427                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 428             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 429                 nlmsg_free(msg);
 430                 return -1;
 431         }
 432
 433         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 434         if (ret == 0)
 435                 ret = res.id;
 436         return ret;
 437 }
 438
 439
 440 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 441                    struct nl_msg *msg, int flags, uint8_t cmd)
 442 {
 443         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 444                            0, flags, cmd, 0);
 445 }
 446
 447
 448 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 449 {
 450         if (bss->wdev_id_set)
 451                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 452         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 453 }
 454
 455
 456 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 457 {
 458         struct nl_msg *msg;
 459
 460         msg = nlmsg_alloc();
 461         if (!msg)
 462                 return NULL;
 463
 464         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 465             nl80211_set_iface_id(msg, bss) < 0) {
 466                 nlmsg_free(msg);
 467                 return NULL;
 468         }
 469
 470         return msg;
 471 }
 472
 473
 474 static struct nl_msg *
 475 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 476                     int flags, uint8_t cmd)
 477 {
 478         struct nl_msg *msg;
 479
 480         msg = nlmsg_alloc();
 481         if (!msg)
 482                 return NULL;
 483
 484         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 485             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 486                 nlmsg_free(msg);
 487                 return NULL;
 488         }
 489
 490         return msg;
 491 }
 492
 493
 494 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 495                                 uint8_t cmd)
 496 {
 497         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 498 }
 499
 500
 501 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 502 {
 503         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 504 }
 505
 506
 507 struct wiphy_idx_data {
 508         int wiphy_idx;
 509         enum nl80211_iftype nlmode;
 510         u8 *macaddr;
 511 };
 512
 513
 514 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 515 {
 516         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 517         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 518         struct wiphy_idx_data *info = arg;
 519
 520         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 521                   genlmsg_attrlen(gnlh, 0), NULL);
 522
 523         if (tb[NL80211_ATTR_WIPHY])
 524                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 525
 526         if (tb[NL80211_ATTR_IFTYPE])
 527                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 528
 529         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 530                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 531                           ETH_ALEN);
 532
 533         return NL_SKIP;
 534 }
 535
 536
 537 int nl80211_get_wiphy_index(struct i802_bss *bss)
 538 {
 539         struct nl_msg *msg;
 540         struct wiphy_idx_data data = {
 541                 .wiphy_idx = -1,
 542                 .macaddr = NULL,
 543         };
 544
 545         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 546                 return -1;
 547
 548         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 549                 return data.wiphy_idx;
 550         return -1;
 551 }
 552
 553
 554 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 555 {
 556         struct nl_msg *msg;
 557         struct wiphy_idx_data data = {
 558                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 559                 .macaddr = NULL,
 560         };
 561
 562         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 563                 return NL80211_IFTYPE_UNSPECIFIED;
 564
 565         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 566                 return data.nlmode;
 567         return NL80211_IFTYPE_UNSPECIFIED;
 568 }
 569
 570
 571 static int nl80211_get_macaddr(struct i802_bss *bss)
 572 {
 573         struct nl_msg *msg;
 574         struct wiphy_idx_data data = {
 575                 .macaddr = bss->addr,
 576         };
 577
 578         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 579                 return -1;
 580
 581         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 582 }
 583
 584
 585 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 586                                     struct nl80211_wiphy_data *w)
 587 {
 588         struct nl_msg *msg;
 589         int ret;
 590
 591         msg = nlmsg_alloc();
 592         if (!msg)
 593                 return -1;
 594
 595         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 596             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 597                 nlmsg_free(msg);
 598                 return -1;
 599         }
 600
 601         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 602         if (ret) {
 603                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 604                            "failed: ret=%d (%s)",
 605                            ret, strerror(-ret));
 606         }
 607         return ret;
 608 }
 609
 610
 611 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 612 {
 613         struct nl80211_wiphy_data *w = eloop_ctx;
 614         int res;
 615
 616         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 617
 618         res = nl_recvmsgs(handle, w->nl_cb);
 619         if (res < 0) {
 620                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 621                            __func__, res);
 622         }
 623 }
 624
 625
 626 static int process_beacon_event(struct nl_msg *msg, void *arg)
 627 {
 628         struct nl80211_wiphy_data *w = arg;
 629         struct wpa_driver_nl80211_data *drv;
 630         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 631         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 632         union wpa_event_data event;
 633
 634         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 635                   genlmsg_attrlen(gnlh, 0), NULL);
 636
 637         if (gnlh->cmd != NL80211_CMD_FRAME) {
 638                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 639                            gnlh->cmd);
 640                 return NL_SKIP;
 641         }
 642
 643         if (!tb[NL80211_ATTR_FRAME])
 644                 return NL_SKIP;
 645
 646         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 647                          wiphy_list) {
 648                 os_memset(&event, 0, sizeof(event));
 649                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 650                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 651                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 652         }
 653
 654         return NL_SKIP;
 655 }
 656
 657
 658 static struct nl80211_wiphy_data *
 659 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 660 {
 661         static DEFINE_DL_LIST(nl80211_wiphys);
 662         struct nl80211_wiphy_data *w;
 663         int wiphy_idx, found = 0;
 664         struct i802_bss *tmp_bss;
 665
 666         if (bss->wiphy_data != NULL)
 667                 return bss->wiphy_data;
 668
 669         wiphy_idx = nl80211_get_wiphy_index(bss);
 670
 671         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 672                 if (w->wiphy_idx == wiphy_idx)
 673                         goto add;
 674         }
 675
 676         /* alloc new one */
 677         w = os_zalloc(sizeof(*w));
 678         if (w == NULL)
 679                 return NULL;
 680         w->wiphy_idx = wiphy_idx;
 681         dl_list_init(&w->bsss);
 682         dl_list_init(&w->drvs);
 683
 684         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 685         if (!w->nl_cb) {
 686                 os_free(w);
 687                 return NULL;
 688         }
 689         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 690         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 691                   w);
 692
 693         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 694                                          "wiphy beacons");
 695         if (w->nl_beacons == NULL) {
 696                 os_free(w);
 697                 return NULL;
 698         }
 699
 700         if (nl80211_register_beacons(bss->drv, w)) {
 701                 nl_destroy_handles(&w->nl_beacons);
 702                 os_free(w);
 703                 return NULL;
 704         }
 705
 706         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 707
 708         dl_list_add(&nl80211_wiphys, &w->list);
 709
 710 add:
 711         /* drv entry for this bss already there? */
 712         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 713                 if (tmp_bss->drv == bss->drv) {
 714                         found = 1;
 715                         break;
 716                 }
 717         }
 718         /* if not add it */
 719         if (!found)
 720                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 721
 722         dl_list_add(&w->bsss, &bss->wiphy_list);
 723         bss->wiphy_data = w;
 724         return w;
 725 }
 726
 727
 728 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 729 {
 730         struct nl80211_wiphy_data *w = bss->wiphy_data;
 731         struct i802_bss *tmp_bss;
 732         int found = 0;
 733
 734         if (w == NULL)
 735                 return;
 736         bss->wiphy_data = NULL;
 737         dl_list_del(&bss->wiphy_list);
 738
 739         /* still any for this drv present? */
 740         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 741                 if (tmp_bss->drv == bss->drv) {
 742                         found = 1;
 743                         break;
 744                 }
 745         }
 746         /* if not remove it */
 747         if (!found)
 748                 dl_list_del(&bss->drv->wiphy_list);
 749
 750         if (!dl_list_empty(&w->bsss))
 751                 return;
 752
 753         nl80211_destroy_eloop_handle(&w->nl_beacons);
 754
 755         nl_cb_put(w->nl_cb);
 756         dl_list_del(&w->list);
 757         os_free(w);
 758 }
 759
 760
 761 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 762 {
 763         struct i802_bss *bss = priv;
 764         struct wpa_driver_nl80211_data *drv = bss->drv;
 765         if (!drv->associated)
 766                 return -1;
 767         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 768         return 0;
 769 }
 770
 771
 772 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 773 {
 774         struct i802_bss *bss = priv;
 775         struct wpa_driver_nl80211_data *drv = bss->drv;
 776         if (!drv->associated)
 777                 return -1;
 778         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 779         return drv->ssid_len;
 780 }
 781
 782
 783 static void wpa_driver_nl80211_event_newlink(
 784         struct wpa_driver_nl80211_data *drv, const char *ifname)
 785 {
 786         union wpa_event_data event;
 787
 788         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 789                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 790                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 791                                    drv->first_bss->ifname);
 792                         return;
 793                 }
 794                 if (!drv->if_removed)
 795                         return;
 796                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 797                            drv->first_bss->ifname);
 798                 drv->if_removed = 0;
 799         }
 800
 801         os_memset(&event, 0, sizeof(event));
 802         os_strlcpy(event.interface_status.ifname, ifname,
 803                    sizeof(event.interface_status.ifname));
 804         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 805         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 806 }
 807
 808
 809 static void wpa_driver_nl80211_event_dellink(
 810         struct wpa_driver_nl80211_data *drv, const char *ifname)
 811 {
 812         union wpa_event_data event;
 813
 814         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 815                 if (drv->if_removed) {
 816                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 817                                    ifname);
 818                         return;
 819                 }
 820                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 821                            ifname);
 822                 drv->if_removed = 1;
 823         } else {
 824                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 825                            ifname);
 826         }
 827
 828         os_memset(&event, 0, sizeof(event));
 829         os_strlcpy(event.interface_status.ifname, ifname,
 830                    sizeof(event.interface_status.ifname));
 831         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 832         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 833 }
 834
 835
 836 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 837                                          u8 *buf, size_t len)
 838 {
 839         int attrlen, rta_len;
 840         struct rtattr *attr;
 841
 842         attrlen = len;
 843         attr = (struct rtattr *) buf;
 844
 845         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 846         while (RTA_OK(attr, attrlen)) {
 847                 if (attr->rta_type == IFLA_IFNAME) {
 848                         if (os_strcmp(((char *) attr) + rta_len,
 849                                       drv->first_bss->ifname) == 0)
 850                                 return 1;
 851                         else
 852                                 break;
 853                 }
 854                 attr = RTA_NEXT(attr, attrlen);
 855         }
 856
 857         return 0;
 858 }
 859
 860
 861 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 862                                           int ifindex, u8 *buf, size_t len)
 863 {
 864         if (drv->ifindex == ifindex)
 865                 return 1;
 866
 867         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 868                 nl80211_check_global(drv->global);
 869                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 870                            "interface");
 871                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 872                 return 1;
 873         }
 874
 875         return 0;
 876 }
 877
 878
 879 static struct wpa_driver_nl80211_data *
 880 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 881 {
 882         struct wpa_driver_nl80211_data *drv;
 883         dl_list_for_each(drv, &global->interfaces,
 884                          struct wpa_driver_nl80211_data, list) {
 885                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 886                     have_ifidx(drv, idx))
 887                         return drv;
 888         }
 889         return NULL;
 890 }
 891
 892
 893 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 894                                                  struct ifinfomsg *ifi,
 895                                                  u8 *buf, size_t len)
 896 {
 897         struct nl80211_global *global = ctx;
 898         struct wpa_driver_nl80211_data *drv;
 899         int attrlen;
 900         struct rtattr *attr;
 901         u32 brid = 0;
 902         char namebuf[IFNAMSIZ];
 903         char ifname[IFNAMSIZ + 1];
 904         char extra[100], *pos, *end;
 905
 906         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 907         if (!drv) {
 908                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 909                            ifi->ifi_index);
 910                 return;
 911         }
 912
 913         extra[0] = '\0';
 914         pos = extra;
 915         end = pos + sizeof(extra);
 916         ifname[0] = '\0';
 917
 918         attrlen = len;
 919         attr = (struct rtattr *) buf;
 920         while (RTA_OK(attr, attrlen)) {
 921                 switch (attr->rta_type) {
 922                 case IFLA_IFNAME:
 923                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 924                                 break;
 925                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 926                         ifname[RTA_PAYLOAD(attr)] = '\0';
 927                         break;
 928                 case IFLA_MASTER:
 929                         brid = nla_get_u32((struct nlattr *) attr);
 930                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 931                         break;
 932                 case IFLA_WIRELESS:
 933                         pos += os_snprintf(pos, end - pos, " wext");
 934                         break;
 935                 case IFLA_OPERSTATE:
 936                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 937                                            nla_get_u32((struct nlattr *) attr));
 938                         break;
 939                 case IFLA_LINKMODE:
 940                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 941                                            nla_get_u32((struct nlattr *) attr));
 942                         break;
 943                 }
 944                 attr = RTA_NEXT(attr, attrlen);
 945         }
 946         extra[sizeof(extra) - 1] = '\0';
 947
 948         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 949                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 950                    ifi->ifi_flags,
 951                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 952                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 953                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 954                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 955
 956         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 957                 namebuf[0] = '\0';
 958                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 959                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) {
 960                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 961                                    "event since interface %s is up", namebuf);
 962                         drv->ignore_if_down_event = 0;
 963                         return;
 964                 }
 965                 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)",
 966                            namebuf, ifname);
 967                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 968                         wpa_printf(MSG_DEBUG,
 969                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 970                                    drv->first_bss->ifname);
 971                 } else if (drv->ignore_if_down_event) {
 972                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 973                                    "event generated by mode change");
 974                         drv->ignore_if_down_event = 0;
 975                 } else {
 976                         drv->if_disabled = 1;
 977                         wpa_supplicant_event(drv->ctx,
 978                                              EVENT_INTERFACE_DISABLED, NULL);
 979
 980                         /*
 981                          * Try to get drv again, since it may be removed as
 982                          * part of the EVENT_INTERFACE_DISABLED handling for
 983                          * dynamic interfaces
 984                          */
 985                         drv = nl80211_find_drv(global, ifi->ifi_index,
 986                                                buf, len);
 987                         if (!drv)
 988                                 return;
 989                 }
 990         }
 991
 992         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 993                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 994                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
 995                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 996                                    "event since interface %s is down",
 997                                    namebuf);
 998                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 999                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1000                                    "event since interface %s does not exist",
1001                                    drv->first_bss->ifname);
1002                 } else if (drv->if_removed) {
1003                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1004                                    "event since interface %s is marked "
1005                                    "removed", drv->first_bss->ifname);
1006                 } else {
1007                         struct i802_bss *bss;
1008                         u8 addr[ETH_ALEN];
1009
1010                         /* Re-read MAC address as it may have changed */
1011                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1012                         if (bss &&
1013                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1014                                                bss->ifname, addr) < 0) {
1015                                 wpa_printf(MSG_DEBUG,
1016                                            "nl80211: %s: failed to re-read MAC address",
1017                                            bss->ifname);
1018                         } else if (bss &&
1019                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1020                                 wpa_printf(MSG_DEBUG,
1021                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1022                                            MACSTR " to " MACSTR,
1023                                            ifi->ifi_index, bss->ifname,
1024                                            MAC2STR(bss->addr),
1025                                            MAC2STR(addr));
1026                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1027                         }
1028
1029                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1030                         drv->if_disabled = 0;
1031                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1032                                              NULL);
1033                 }
1034         }
1035
1036         /*
1037          * Some drivers send the association event before the operup event--in
1038          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1039          * fails. This will hit us when wpa_supplicant does not need to do
1040          * IEEE 802.1X authentication
1041          */
1042         if (drv->operstate == 1 &&
1043             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1044             !(ifi->ifi_flags & IFF_RUNNING)) {
1045                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1046                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1047                                        -1, IF_OPER_UP);
1048         }
1049
1050         if (ifname[0])
1051                 wpa_driver_nl80211_event_newlink(drv, ifname);
1052
1053         if (ifi->ifi_family == AF_BRIDGE && brid) {
1054                 struct i802_bss *bss;
1055
1056                 /* device has been added to bridge */
1057                 if (!if_indextoname(brid, namebuf)) {
1058                         wpa_printf(MSG_DEBUG,
1059                                    "nl80211: Could not find bridge ifname for ifindex %u",
1060                                    brid);
1061                         return;
1062                 }
1063                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1064                            brid, namebuf);
1065                 add_ifidx(drv, brid);
1066
1067                 for (bss = drv->first_bss; bss; bss = bss->next) {
1068                         if (os_strcmp(ifname, bss->ifname) == 0) {
1069                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1070                                 break;
1071                         }
1072                 }
1073         }
1074 }
1075
1076
1077 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1078                                                  struct ifinfomsg *ifi,
1079                                                  u8 *buf, size_t len)
1080 {
1081         struct nl80211_global *global = ctx;
1082         struct wpa_driver_nl80211_data *drv;
1083         int attrlen;
1084         struct rtattr *attr;
1085         u32 brid = 0;
1086         char ifname[IFNAMSIZ + 1];
1087         char extra[100], *pos, *end;
1088
1089         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1090         if (!drv) {
1091                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1092                            ifi->ifi_index);
1093                 return;
1094         }
1095
1096         extra[0] = '\0';
1097         pos = extra;
1098         end = pos + sizeof(extra);
1099         ifname[0] = '\0';
1100
1101         attrlen = len;
1102         attr = (struct rtattr *) buf;
1103         while (RTA_OK(attr, attrlen)) {
1104                 switch (attr->rta_type) {
1105                 case IFLA_IFNAME:
1106                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1107                                 break;
1108                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1109                         ifname[RTA_PAYLOAD(attr)] = '\0';
1110                         break;
1111                 case IFLA_MASTER:
1112                         brid = nla_get_u32((struct nlattr *) attr);
1113                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1114                         break;
1115                 case IFLA_OPERSTATE:
1116                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1117                                            nla_get_u32((struct nlattr *) attr));
1118                         break;
1119                 case IFLA_LINKMODE:
1120                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1121                                            nla_get_u32((struct nlattr *) attr));
1122                         break;
1123                 }
1124                 attr = RTA_NEXT(attr, attrlen);
1125         }
1126         extra[sizeof(extra) - 1] = '\0';
1127
1128         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1129                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1130                    ifi->ifi_flags,
1131                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1132                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1133                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1134                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1135
1136         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1137                 wpa_driver_nl80211_event_dellink(drv, ifname);
1138
1139         if (ifi->ifi_family == AF_BRIDGE && brid) {
1140                 /* device has been removed from bridge */
1141                 char namebuf[IFNAMSIZ];
1142
1143                 if (!if_indextoname(brid, namebuf)) {
1144                         wpa_printf(MSG_DEBUG,
1145                                    "nl80211: Could not find bridge ifname for ifindex %u",
1146                                    brid);
1147                 } else {
1148                         wpa_printf(MSG_DEBUG,
1149                                    "nl80211: Remove ifindex %u for bridge %s",
1150                                    brid, namebuf);
1151                 }
1152                 del_ifidx(drv, brid);
1153         }
1154 }
1155
1156
1157 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1158 {
1159         struct nl_msg *msg;
1160         int ret;
1161         struct nl80211_bss_info_arg arg;
1162
1163         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1164         os_memset(&arg, 0, sizeof(arg));
1165         arg.drv = drv;
1166         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1167         if (ret == 0) {
1168                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1169                         arg.ibss_freq : arg.assoc_freq;
1170                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1171                            "associated BSS from scan results: %u MHz", freq);
1172                 if (freq)
1173                         drv->assoc_freq = freq;
1174                 return drv->assoc_freq;
1175         }
1176         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1177                    "(%s)", ret, strerror(-ret));
1178         return drv->assoc_freq;
1179 }
1180
1181
1182 static int get_link_signal(struct nl_msg *msg, void *arg)
1183 {
1184         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1185         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1186         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1187         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1188                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1189                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1190                 [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = { .type = NLA_U8 },
1191         };
1192         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1193         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1194                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1195                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1196                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1197                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1198         };
1199         struct wpa_signal_info *sig_change = arg;
1200
1201         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1202                   genlmsg_attrlen(gnlh, 0), NULL);
1203         if (!tb[NL80211_ATTR_STA_INFO] ||
1204             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1205                              tb[NL80211_ATTR_STA_INFO], policy))
1206                 return NL_SKIP;
1207         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1208                 return NL_SKIP;
1209
1210         sig_change->current_signal =
1211                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1212
1213         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1214                 sig_change->avg_signal =
1215                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1216         else
1217                 sig_change->avg_signal = 0;
1218
1219         if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG])
1220                 sig_change->avg_beacon_signal =
1221                         (s8)
1222                         nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]);
1223         else
1224                 sig_change->avg_beacon_signal = 0;
1225
1226         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1227                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1228                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1229                                      rate_policy)) {
1230                         sig_change->current_txrate = 0;
1231                 } else {
1232                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1233                                 sig_change->current_txrate =
1234                                         nla_get_u16(rinfo[
1235                                              NL80211_RATE_INFO_BITRATE]) * 100;
1236                         }
1237                 }
1238         }
1239
1240         return NL_SKIP;
1241 }
1242
1243
1244 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1245                             struct wpa_signal_info *sig)
1246 {
1247         struct nl_msg *msg;
1248
1249         sig->current_signal = -9999;
1250         sig->current_txrate = 0;
1251
1252         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1253             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1254                 nlmsg_free(msg);
1255                 return -ENOBUFS;
1256         }
1257
1258         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1259 }
1260
1261
1262 static int get_link_noise(struct nl_msg *msg, void *arg)
1263 {
1264         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1265         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1266         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1267         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1268                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1269                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1270         };
1271         struct wpa_signal_info *sig_change = arg;
1272
1273         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1274                   genlmsg_attrlen(gnlh, 0), NULL);
1275
1276         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1277                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1278                 return NL_SKIP;
1279         }
1280
1281         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1282                              tb[NL80211_ATTR_SURVEY_INFO],
1283                              survey_policy)) {
1284                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1285                            "attributes!");
1286                 return NL_SKIP;
1287         }
1288
1289         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1290                 return NL_SKIP;
1291
1292         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1293             sig_change->frequency)
1294                 return NL_SKIP;
1295
1296         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1297                 return NL_SKIP;
1298
1299         sig_change->current_noise =
1300                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1301
1302         return NL_SKIP;
1303 }
1304
1305
1306 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1307                            struct wpa_signal_info *sig_change)
1308 {
1309         struct nl_msg *msg;
1310
1311         sig_change->current_noise = 9999;
1312         sig_change->frequency = drv->assoc_freq;
1313
1314         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1315         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1316 }
1317
1318
1319 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1320                                              void *handle)
1321 {
1322         struct nl_cb *cb = eloop_ctx;
1323         int res;
1324
1325         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1326
1327         res = nl_recvmsgs(handle, cb);
1328         if (res < 0) {
1329                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1330                            __func__, res);
1331         }
1332 }
1333
1334
1335 /**
1336  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1337  * @priv: driver_nl80211 private data
1338  * @alpha2_arg: country to which to switch to
1339  * Returns: 0 on success, -1 on failure
1340  *
1341  * This asks nl80211 to set the regulatory domain for given
1342  * country ISO / IEC alpha2.
1343  */
1344 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1345 {
1346         struct i802_bss *bss = priv;
1347         struct wpa_driver_nl80211_data *drv = bss->drv;
1348         char alpha2[3];
1349         struct nl_msg *msg;
1350
1351         msg = nlmsg_alloc();
1352         if (!msg)
1353                 return -ENOMEM;
1354
1355         alpha2[0] = alpha2_arg[0];
1356         alpha2[1] = alpha2_arg[1];
1357         alpha2[2] = '\0';
1358
1359         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1360             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1361                 nlmsg_free(msg);
1362                 return -EINVAL;
1363         }
1364         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1365                 return -EINVAL;
1366         return 0;
1367 }
1368
1369
1370 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1371 {
1372         char *alpha2 = arg;
1373         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1374         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1375
1376         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1377                   genlmsg_attrlen(gnlh, 0), NULL);
1378         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1379                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1380                 return NL_SKIP;
1381         }
1382         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1383         return NL_SKIP;
1384 }
1385
1386
1387 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1388 {
1389         struct i802_bss *bss = priv;
1390         struct wpa_driver_nl80211_data *drv = bss->drv;
1391         struct nl_msg *msg;
1392         int ret;
1393
1394         msg = nlmsg_alloc();
1395         if (!msg)
1396                 return -ENOMEM;
1397
1398         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1399         alpha2[0] = '\0';
1400         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1401         if (!alpha2[0])
1402                 ret = -1;
1403
1404         return ret;
1405 }
1406
1407
1408 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1409 {
1410         int ret;
1411
1412         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1413         if (global->nl_cb == NULL) {
1414                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1415                            "callbacks");
1416                 return -1;
1417         }
1418
1419         global->nl = nl_create_handle(global->nl_cb, "nl");
1420         if (global->nl == NULL)
1421                 goto err;
1422
1423         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1424         if (global->nl80211_id < 0) {
1425                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1426                            "found");
1427                 goto err;
1428         }
1429
1430         global->nl_event = nl_create_handle(global->nl_cb, "event");
1431         if (global->nl_event == NULL)
1432                 goto err;
1433
1434         ret = nl_get_multicast_id(global, "nl80211", "scan");
1435         if (ret >= 0)
1436                 ret = nl_socket_add_membership(global->nl_event, ret);
1437         if (ret < 0) {
1438                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1439                            "membership for scan events: %d (%s)",
1440                            ret, strerror(-ret));
1441                 goto err;
1442         }
1443
1444         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1445         if (ret >= 0)
1446                 ret = nl_socket_add_membership(global->nl_event, ret);
1447         if (ret < 0) {
1448                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1449                            "membership for mlme events: %d (%s)",
1450                            ret, strerror(-ret));
1451                 goto err;
1452         }
1453
1454         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1455         if (ret >= 0)
1456                 ret = nl_socket_add_membership(global->nl_event, ret);
1457         if (ret < 0) {
1458                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1459                            "membership for regulatory events: %d (%s)",
1460                            ret, strerror(-ret));
1461                 /* Continue without regulatory events */
1462         }
1463
1464         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1465         if (ret >= 0)
1466                 ret = nl_socket_add_membership(global->nl_event, ret);
1467         if (ret < 0) {
1468                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1469                            "membership for vendor events: %d (%s)",
1470                            ret, strerror(-ret));
1471                 /* Continue without vendor events */
1472         }
1473
1474         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1475                   no_seq_check, NULL);
1476         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1477                   process_global_event, global);
1478
1479         nl80211_register_eloop_read(&global->nl_event,
1480                                     wpa_driver_nl80211_event_receive,
1481                                     global->nl_cb);
1482
1483         return 0;
1484
1485 err:
1486         nl_destroy_handles(&global->nl_event);
1487         nl_destroy_handles(&global->nl);
1488         nl_cb_put(global->nl_cb);
1489         global->nl_cb = NULL;
1490         return -1;
1491 }
1492
1493
1494 static void nl80211_check_global(struct nl80211_global *global)
1495 {
1496         struct nl_handle *handle;
1497         const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL };
1498         int ret;
1499         unsigned int i;
1500
1501         /*
1502          * Try to re-add memberships to handle case of cfg80211 getting reloaded
1503          * and all registration having been cleared.
1504          */
1505         handle = (void *) (((intptr_t) global->nl_event) ^
1506                            ELOOP_SOCKET_INVALID);
1507
1508         for (i = 0; groups[i]; i++) {
1509                 ret = nl_get_multicast_id(global, "nl80211", groups[i]);
1510                 if (ret >= 0)
1511                         ret = nl_socket_add_membership(handle, ret);
1512                 if (ret < 0) {
1513                         wpa_printf(MSG_INFO,
1514                                    "nl80211: Could not re-add multicast membership for %s events: %d (%s)",
1515                                    groups[i], ret, strerror(-ret));
1516                 }
1517         }
1518 }
1519
1520
1521 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1522 {
1523         struct wpa_driver_nl80211_data *drv = ctx;
1524
1525         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1526
1527         /*
1528          * rtnetlink ifdown handler will report interfaces other than the P2P
1529          * Device interface as disabled.
1530          */
1531         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1532                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
1533 }
1534
1535
1536 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1537 {
1538         struct wpa_driver_nl80211_data *drv = ctx;
1539         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1540         if (i802_set_iface_flags(drv->first_bss, 1)) {
1541                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1542                            "after rfkill unblock");
1543                 return;
1544         }
1545
1546         if (is_p2p_net_interface(drv->nlmode))
1547                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
1548
1549         /*
1550          * rtnetlink ifup handler will report interfaces other than the P2P
1551          * Device interface as enabled.
1552          */
1553         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1554                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
1555 }
1556
1557
1558 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1559                                                       void *eloop_ctx,
1560                                                       void *handle)
1561 {
1562         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1563         u8 data[2048];
1564         struct msghdr msg;
1565         struct iovec entry;
1566         u8 control[512];
1567         struct cmsghdr *cmsg;
1568         int res, found_ee = 0, found_wifi = 0, acked = 0;
1569         union wpa_event_data event;
1570
1571         memset(&msg, 0, sizeof(msg));
1572         msg.msg_iov = &entry;
1573         msg.msg_iovlen = 1;
1574         entry.iov_base = data;
1575         entry.iov_len = sizeof(data);
1576         msg.msg_control = &control;
1577         msg.msg_controllen = sizeof(control);
1578
1579         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1580         /* if error or not fitting 802.3 header, return */
1581         if (res < 14)
1582                 return;
1583
1584         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1585         {
1586                 if (cmsg->cmsg_level == SOL_SOCKET &&
1587                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1588                         int *ack;
1589
1590                         found_wifi = 1;
1591                         ack = (void *)CMSG_DATA(cmsg);
1592                         acked = *ack;
1593                 }
1594
1595                 if (cmsg->cmsg_level == SOL_PACKET &&
1596                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1597                         struct sock_extended_err *err =
1598                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1599
1600                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1601                                 found_ee = 1;
1602                 }
1603         }
1604
1605         if (!found_ee || !found_wifi)
1606                 return;
1607
1608         memset(&event, 0, sizeof(event));
1609         event.eapol_tx_status.dst = data;
1610         event.eapol_tx_status.data = data + 14;
1611         event.eapol_tx_status.data_len = res - 14;
1612         event.eapol_tx_status.ack = acked;
1613         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1614 }
1615
1616
1617 static int nl80211_init_bss(struct i802_bss *bss)
1618 {
1619         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1620         if (!bss->nl_cb)
1621                 return -1;
1622
1623         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1624                   no_seq_check, NULL);
1625         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1626                   process_bss_event, bss);
1627
1628         return 0;
1629 }
1630
1631
1632 static void nl80211_destroy_bss(struct i802_bss *bss)
1633 {
1634         nl_cb_put(bss->nl_cb);
1635         bss->nl_cb = NULL;
1636 }
1637
1638
1639 static void
1640 wpa_driver_nl80211_drv_init_rfkill(struct wpa_driver_nl80211_data *drv)
1641 {
1642         struct rfkill_config *rcfg;
1643
1644         if (drv->rfkill)
1645                 return;
1646
1647         rcfg = os_zalloc(sizeof(*rcfg));
1648         if (!rcfg)
1649                 return;
1650
1651         rcfg->ctx = drv;
1652
1653         /* rfkill uses netdev sysfs for initialization. However, P2P Device is
1654          * not associated with a netdev, so use the name of some other interface
1655          * sharing the same wiphy as the P2P Device interface.
1656          *
1657          * Note: This is valid, as a P2P Device interface is always dynamically
1658          * created and is created only once another wpa_s interface was added.
1659          */
1660         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) {
1661                 struct nl80211_global *global = drv->global;
1662                 struct wpa_driver_nl80211_data *tmp1;
1663
1664                 dl_list_for_each(tmp1, &global->interfaces,
1665                                  struct wpa_driver_nl80211_data, list) {
1666                         if (drv == tmp1 || drv->wiphy_idx != tmp1->wiphy_idx ||
1667                             !tmp1->rfkill)
1668                                 continue;
1669
1670                         wpa_printf(MSG_DEBUG,
1671                                    "nl80211: Use (%s) to initialize P2P Device rfkill",
1672                                    tmp1->first_bss->ifname);
1673                         os_strlcpy(rcfg->ifname, tmp1->first_bss->ifname,
1674                                    sizeof(rcfg->ifname));
1675                         break;
1676                 }
1677         } else {
1678                 os_strlcpy(rcfg->ifname, drv->first_bss->ifname,
1679                            sizeof(rcfg->ifname));
1680         }
1681
1682         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1683         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1684         drv->rfkill = rfkill_init(rcfg);
1685         if (!drv->rfkill) {
1686                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1687                 os_free(rcfg);
1688         }
1689 }
1690
1691
1692 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1693                                           void *global_priv, int hostapd,
1694                                           const u8 *set_addr,
1695                                           const char *driver_params)
1696 {
1697         struct wpa_driver_nl80211_data *drv;
1698         struct i802_bss *bss;
1699
1700         if (global_priv == NULL)
1701                 return NULL;
1702         drv = os_zalloc(sizeof(*drv));
1703         if (drv == NULL)
1704                 return NULL;
1705         drv->global = global_priv;
1706         drv->ctx = ctx;
1707         drv->hostapd = !!hostapd;
1708         drv->eapol_sock = -1;
1709
1710         /*
1711          * There is no driver capability flag for this, so assume it is
1712          * supported and disable this on first attempt to use if the driver
1713          * rejects the command due to missing support.
1714          */
1715         drv->set_rekey_offload = 1;
1716
1717         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1718         drv->if_indices = drv->default_if_indices;
1719
1720         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1721         if (!drv->first_bss) {
1722                 os_free(drv);
1723                 return NULL;
1724         }
1725         bss = drv->first_bss;
1726         bss->drv = drv;
1727         bss->ctx = ctx;
1728
1729         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1730         drv->monitor_ifidx = -1;
1731         drv->monitor_sock = -1;
1732         drv->eapol_tx_sock = -1;
1733         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1734
1735         if (nl80211_init_bss(bss))
1736                 goto failed;
1737
1738         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1739                 goto failed;
1740
1741         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1742         if (drv->eapol_tx_sock < 0)
1743                 goto failed;
1744
1745         if (drv->data_tx_status) {
1746                 int enabled = 1;
1747
1748                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1749                                &enabled, sizeof(enabled)) < 0) {
1750                         wpa_printf(MSG_DEBUG,
1751                                 "nl80211: wifi status sockopt failed\n");
1752                         drv->data_tx_status = 0;
1753                         if (!drv->use_monitor)
1754                                 drv->capa.flags &=
1755                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1756                 } else {
1757                         eloop_register_read_sock(drv->eapol_tx_sock,
1758                                 wpa_driver_nl80211_handle_eapol_tx_status,
1759                                 drv, NULL);
1760                 }
1761         }
1762
1763         if (drv->global) {
1764                 nl80211_check_global(drv->global);
1765                 dl_list_add(&drv->global->interfaces, &drv->list);
1766                 drv->in_interface_list = 1;
1767         }
1768
1769         return bss;
1770
1771 failed:
1772         wpa_driver_nl80211_deinit(bss);
1773         return NULL;
1774 }
1775
1776
1777 /**
1778  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1779  * @ctx: context to be used when calling wpa_supplicant functions,
1780  * e.g., wpa_supplicant_event()
1781  * @ifname: interface name, e.g., wlan0
1782  * @global_priv: private driver global data from global_init()
1783  * Returns: Pointer to private data, %NULL on failure
1784  */
1785 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1786                                       void *global_priv)
1787 {
1788         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1789                                            NULL);
1790 }
1791
1792
1793 static int nl80211_register_frame(struct i802_bss *bss,
1794                                   struct nl_handle *nl_handle,
1795                                   u16 type, const u8 *match, size_t match_len)
1796 {
1797         struct wpa_driver_nl80211_data *drv = bss->drv;
1798         struct nl_msg *msg;
1799         int ret;
1800         char buf[30];
1801
1802         buf[0] = '\0';
1803         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1804         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1805                    type, fc2str(type), nl_handle, buf);
1806
1807         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1808             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1809             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1810                 nlmsg_free(msg);
1811                 return -1;
1812         }
1813
1814         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1815         if (ret) {
1816                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1817                            "failed (type=%u): ret=%d (%s)",
1818                            type, ret, strerror(-ret));
1819                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1820                             match, match_len);
1821         }
1822         return ret;
1823 }
1824
1825
1826 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1827 {
1828         if (bss->nl_mgmt) {
1829                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1830                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1831                 return -1;
1832         }
1833
1834         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1835         if (bss->nl_mgmt == NULL)
1836                 return -1;
1837
1838         return 0;
1839 }
1840
1841
1842 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1843 {
1844         nl80211_register_eloop_read(&bss->nl_mgmt,
1845                                     wpa_driver_nl80211_event_receive,
1846                                     bss->nl_cb);
1847 }
1848
1849
1850 static int nl80211_register_action_frame(struct i802_bss *bss,
1851                                          const u8 *match, size_t match_len)
1852 {
1853         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1854         return nl80211_register_frame(bss, bss->nl_mgmt,
1855                                       type, match, match_len);
1856 }
1857
1858
1859 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1860 {
1861         struct wpa_driver_nl80211_data *drv = bss->drv;
1862         int ret = 0;
1863
1864         if (nl80211_alloc_mgmt_handle(bss))
1865                 return -1;
1866         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1867                    "handle %p", bss->nl_mgmt);
1868
1869         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1870                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1871
1872                 /* register for any AUTH message */
1873                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1874         }
1875
1876 #ifdef CONFIG_INTERWORKING
1877         /* QoS Map Configure */
1878         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1879                 ret = -1;
1880 #endif /* CONFIG_INTERWORKING */
1881 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1882         /* GAS Initial Request */
1883         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1884                 ret = -1;
1885         /* GAS Initial Response */
1886         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1887                 ret = -1;
1888         /* GAS Comeback Request */
1889         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1890                 ret = -1;
1891         /* GAS Comeback Response */
1892         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1893                 ret = -1;
1894         /* Protected GAS Initial Request */
1895         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1896                 ret = -1;
1897         /* Protected GAS Initial Response */
1898         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1899                 ret = -1;
1900         /* Protected GAS Comeback Request */
1901         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1902                 ret = -1;
1903         /* Protected GAS Comeback Response */
1904         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1905                 ret = -1;
1906 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1907 #ifdef CONFIG_P2P
1908         /* P2P Public Action */
1909         if (nl80211_register_action_frame(bss,
1910                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1911                                           6) < 0)
1912                 ret = -1;
1913         /* P2P Action */
1914         if (nl80211_register_action_frame(bss,
1915                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1916                                           5) < 0)
1917                 ret = -1;
1918 #endif /* CONFIG_P2P */
1919 #ifdef CONFIG_IEEE80211W
1920         /* SA Query Response */
1921         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1922                 ret = -1;
1923 #endif /* CONFIG_IEEE80211W */
1924 #ifdef CONFIG_TDLS
1925         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1926                 /* TDLS Discovery Response */
1927                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1928                     0)
1929                         ret = -1;
1930         }
1931 #endif /* CONFIG_TDLS */
1932 #ifdef CONFIG_FST
1933         /* FST Action frames */
1934         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
1935                 ret = -1;
1936 #endif /* CONFIG_FST */
1937
1938         /* FT Action frames */
1939         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1940                 ret = -1;
1941         else
1942                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1943                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1944
1945         /* WNM - BSS Transition Management Request */
1946         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1947                 ret = -1;
1948         /* WNM-Sleep Mode Response */
1949         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1950                 ret = -1;
1951
1952 #ifdef CONFIG_HS20
1953         /* WNM-Notification */
1954         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1955                 ret = -1;
1956 #endif /* CONFIG_HS20 */
1957
1958         /* WMM-AC ADDTS Response */
1959         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1960                 ret = -1;
1961
1962         /* WMM-AC DELTS */
1963         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1964                 ret = -1;
1965
1966         /* Radio Measurement - Neighbor Report Response */
1967         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1968                 ret = -1;
1969
1970         /* Radio Measurement - Link Measurement Request */
1971         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1972             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1973                 ret = -1;
1974
1975         nl80211_mgmt_handle_register_eloop(bss);
1976
1977         return ret;
1978 }
1979
1980
1981 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1982 {
1983         int ret = 0;
1984
1985         if (nl80211_alloc_mgmt_handle(bss))
1986                 return -1;
1987
1988         wpa_printf(MSG_DEBUG,
1989                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1990                    bss->nl_mgmt);
1991
1992         /* Auth frames for mesh SAE */
1993         if (nl80211_register_frame(bss, bss->nl_mgmt,
1994                                    (WLAN_FC_TYPE_MGMT << 2) |
1995                                    (WLAN_FC_STYPE_AUTH << 4),
1996                                    NULL, 0) < 0)
1997                 ret = -1;
1998
1999         /* Mesh peering open */
2000         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
2001                 ret = -1;
2002         /* Mesh peering confirm */
2003         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
2004                 ret = -1;
2005         /* Mesh peering close */
2006         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
2007                 ret = -1;
2008
2009         nl80211_mgmt_handle_register_eloop(bss);
2010
2011         return ret;
2012 }
2013
2014
2015 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2016 {
2017         struct nl_msg *msg;
2018         int ret;
2019
2020         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
2021         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
2022         if (ret) {
2023                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2024                            "failed: ret=%d (%s)",
2025                            ret, strerror(-ret));
2026         }
2027         return ret;
2028 }
2029
2030
2031 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2032 {
2033         static const int stypes[] = {
2034                 WLAN_FC_STYPE_AUTH,
2035                 WLAN_FC_STYPE_ASSOC_REQ,
2036                 WLAN_FC_STYPE_REASSOC_REQ,
2037                 WLAN_FC_STYPE_DISASSOC,
2038                 WLAN_FC_STYPE_DEAUTH,
2039                 WLAN_FC_STYPE_ACTION,
2040                 WLAN_FC_STYPE_PROBE_REQ,
2041 /* Beacon doesn't work as mac80211 doesn't currently allow
2042  * it, but it wouldn't really be the right thing anyway as
2043  * it isn't per interface ... maybe just dump the scan
2044  * results periodically for OLBC?
2045  */
2046                 /* WLAN_FC_STYPE_BEACON, */
2047         };
2048         unsigned int i;
2049
2050         if (nl80211_alloc_mgmt_handle(bss))
2051                 return -1;
2052         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2053                    "handle %p", bss->nl_mgmt);
2054
2055         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2056                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2057                                            (WLAN_FC_TYPE_MGMT << 2) |
2058                                            (stypes[i] << 4),
2059                                            NULL, 0) < 0) {
2060                         goto out_err;
2061                 }
2062         }
2063
2064         if (nl80211_register_spurious_class3(bss))
2065                 goto out_err;
2066
2067         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2068                 goto out_err;
2069
2070         nl80211_mgmt_handle_register_eloop(bss);
2071         return 0;
2072
2073 out_err:
2074         nl_destroy_handles(&bss->nl_mgmt);
2075         return -1;
2076 }
2077
2078
2079 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2080 {
2081         if (nl80211_alloc_mgmt_handle(bss))
2082                 return -1;
2083         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2084                    "handle %p (device SME)", bss->nl_mgmt);
2085
2086         if (nl80211_register_frame(bss, bss->nl_mgmt,
2087                                    (WLAN_FC_TYPE_MGMT << 2) |
2088                                    (WLAN_FC_STYPE_ACTION << 4),
2089                                    NULL, 0) < 0)
2090                 goto out_err;
2091
2092         nl80211_mgmt_handle_register_eloop(bss);
2093         return 0;
2094
2095 out_err:
2096         nl_destroy_handles(&bss->nl_mgmt);
2097         return -1;
2098 }
2099
2100
2101 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2102 {
2103         if (bss->nl_mgmt == NULL)
2104                 return;
2105         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2106                    "(%s)", bss->nl_mgmt, reason);
2107         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2108
2109         nl80211_put_wiphy_data_ap(bss);
2110 }
2111
2112
2113 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2114 {
2115         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2116 }
2117
2118
2119 static void nl80211_del_p2pdev(struct i802_bss *bss)
2120 {
2121         struct nl_msg *msg;
2122         int ret;
2123
2124         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2125         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2126
2127         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2128                    bss->ifname, (long long unsigned int) bss->wdev_id,
2129                    strerror(-ret));
2130 }
2131
2132
2133 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2134 {
2135         struct nl_msg *msg;
2136         int ret;
2137
2138         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2139                               NL80211_CMD_STOP_P2P_DEVICE);
2140         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2141
2142         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2143                    start ? "Start" : "Stop",
2144                    bss->ifname, (long long unsigned int) bss->wdev_id,
2145                    strerror(-ret));
2146         return ret;
2147 }
2148
2149
2150 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2151 {
2152         enum nl80211_iftype nlmode;
2153
2154         nlmode = nl80211_get_ifmode(bss);
2155         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2156                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2157                                              bss->ifname, up);
2158         }
2159
2160         /* P2P Device has start/stop which is equivalent */
2161         return nl80211_set_p2pdev(bss, up);
2162 }
2163
2164
2165 #ifdef CONFIG_TESTING_OPTIONS
2166 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2167 {
2168         /* struct wpa_driver_nl80211_data *drv = arg; */
2169         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2170         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2171
2172
2173         wpa_printf(MSG_DEBUG,
2174                    "nl80211: QCA vendor test command response received");
2175
2176         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2177                   genlmsg_attrlen(gnlh, 0), NULL);
2178         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2179                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2180                 return NL_SKIP;
2181         }
2182
2183         wpa_hexdump(MSG_DEBUG,
2184                     "nl80211: Received QCA vendor test command response",
2185                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2186                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2187
2188         return NL_SKIP;
2189 }
2190 #endif /* CONFIG_TESTING_OPTIONS */
2191
2192
2193 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2194 {
2195 #ifdef CONFIG_TESTING_OPTIONS
2196         struct nl_msg *msg;
2197         struct nlattr *params;
2198         int ret;
2199
2200         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2201             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2202             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2203                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2204             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2205             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2206                 nlmsg_free(msg);
2207                 return;
2208         }
2209         nla_nest_end(msg, params);
2210
2211         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2212         wpa_printf(MSG_DEBUG,
2213                    "nl80211: QCA vendor test command returned %d (%s)",
2214                    ret, strerror(-ret));
2215 #endif /* CONFIG_TESTING_OPTIONS */
2216 }
2217
2218
2219 static int
2220 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2221                                    const u8 *set_addr, int first,
2222                                    const char *driver_params)
2223 {
2224         struct i802_bss *bss = drv->first_bss;
2225         int send_rfkill_event = 0;
2226         enum nl80211_iftype nlmode;
2227
2228         drv->ifindex = if_nametoindex(bss->ifname);
2229         bss->ifindex = drv->ifindex;
2230         bss->wdev_id = drv->global->if_add_wdevid;
2231         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2232
2233         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2234         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2235         drv->global->if_add_wdevid_set = 0;
2236
2237         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2238                 bss->static_ap = 1;
2239
2240         if (first &&
2241             nl80211_get_ifmode(bss) != NL80211_IFTYPE_P2P_DEVICE &&
2242             linux_iface_up(drv->global->ioctl_sock, bss->ifname) > 0)
2243                 drv->start_iface_up = 1;
2244
2245         if (wpa_driver_nl80211_capa(drv))
2246                 return -1;
2247
2248         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2249                 return -1;
2250
2251         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2252                    bss->ifname, drv->phyname);
2253
2254         if (set_addr &&
2255             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2256              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2257                                 set_addr)))
2258                 return -1;
2259
2260         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2261                 drv->start_mode_ap = 1;
2262
2263         if (drv->hostapd || bss->static_ap)
2264                 nlmode = NL80211_IFTYPE_AP;
2265         else if (bss->if_dynamic)
2266                 nlmode = nl80211_get_ifmode(bss);
2267         else
2268                 nlmode = NL80211_IFTYPE_STATION;
2269
2270         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2271                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2272                 return -1;
2273         }
2274
2275         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2276                 nl80211_get_macaddr(bss);
2277
2278         wpa_driver_nl80211_drv_init_rfkill(drv);
2279
2280         if (!rfkill_is_blocked(drv->rfkill)) {
2281                 int ret = i802_set_iface_flags(bss, 1);
2282                 if (ret) {
2283                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2284                                    "interface '%s' UP", bss->ifname);
2285                         return ret;
2286                 }
2287
2288                 if (is_p2p_net_interface(nlmode))
2289                         nl80211_disable_11b_rates(bss->drv,
2290                                                   bss->drv->ifindex, 1);
2291
2292                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2293                         return ret;
2294         } else {
2295                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2296                            "interface '%s' due to rfkill", bss->ifname);
2297                 if (nlmode != NL80211_IFTYPE_P2P_DEVICE)
2298                         drv->if_disabled = 1;
2299
2300                 send_rfkill_event = 1;
2301         }
2302
2303         if (!drv->hostapd && nlmode != NL80211_IFTYPE_P2P_DEVICE)
2304                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2305                                        1, IF_OPER_DORMANT);
2306
2307         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2308                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2309                                        bss->addr))
2310                         return -1;
2311                 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2312         }
2313
2314         if (send_rfkill_event) {
2315                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2316                                        drv, drv->ctx);
2317         }
2318
2319         if (drv->vendor_cmd_test_avail)
2320                 qca_vendor_test(drv);
2321
2322         return 0;
2323 }
2324
2325
2326 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2327 {
2328         struct nl_msg *msg;
2329
2330         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2331                    drv->ifindex);
2332         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2333         return send_and_recv_msgs(drv, msg, NULL, NULL);
2334 }
2335
2336
2337 /**
2338  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2339  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2340  *
2341  * Shut down driver interface and processing of driver events. Free
2342  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2343  */
2344 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2345 {
2346         struct wpa_driver_nl80211_data *drv = bss->drv;
2347
2348         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2349                    bss->ifname, drv->disabled_11b_rates);
2350
2351         bss->in_deinit = 1;
2352         if (drv->data_tx_status)
2353                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2354         if (drv->eapol_tx_sock >= 0)
2355                 close(drv->eapol_tx_sock);
2356
2357         if (bss->nl_preq)
2358                 wpa_driver_nl80211_probe_req_report(bss, 0);
2359         if (bss->added_if_into_bridge) {
2360                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2361                                     bss->ifname) < 0)
2362                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2363                                    "interface %s from bridge %s: %s",
2364                                    bss->ifname, bss->brname, strerror(errno));
2365                 if (drv->rtnl_sk)
2366                         nl80211_handle_destroy(drv->rtnl_sk);
2367         }
2368         if (bss->added_bridge) {
2369                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2370                                           0) < 0)
2371                         wpa_printf(MSG_INFO,
2372                                    "nl80211: Could not set bridge %s down",
2373                                    bss->brname);
2374                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2375                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2376                                    "bridge %s: %s",
2377                                    bss->brname, strerror(errno));
2378         }
2379
2380         nl80211_remove_monitor_interface(drv);
2381
2382         if (is_ap_interface(drv->nlmode))
2383                 wpa_driver_nl80211_del_beacon(drv);
2384
2385         if (drv->eapol_sock >= 0) {
2386                 eloop_unregister_read_sock(drv->eapol_sock);
2387                 close(drv->eapol_sock);
2388         }
2389
2390         if (drv->if_indices != drv->default_if_indices)
2391                 os_free(drv->if_indices);
2392
2393         if (drv->disabled_11b_rates)
2394                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2395
2396         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2397                                IF_OPER_UP);
2398         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2399         rfkill_deinit(drv->rfkill);
2400
2401         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2402
2403         if (!drv->start_iface_up)
2404                 (void) i802_set_iface_flags(bss, 0);
2405
2406         if (drv->addr_changed) {
2407                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2408                                           0) < 0) {
2409                         wpa_printf(MSG_DEBUG,
2410                                    "nl80211: Could not set interface down to restore permanent MAC address");
2411                 }
2412                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2413                                        drv->perm_addr) < 0) {
2414                         wpa_printf(MSG_DEBUG,
2415                                    "nl80211: Could not restore permanent MAC address");
2416                 }
2417         }
2418
2419         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2420                 if (!drv->hostapd || !drv->start_mode_ap)
2421                         wpa_driver_nl80211_set_mode(bss,
2422                                                     NL80211_IFTYPE_STATION);
2423                 nl80211_mgmt_unsubscribe(bss, "deinit");
2424         } else {
2425                 nl80211_mgmt_unsubscribe(bss, "deinit");
2426                 nl80211_del_p2pdev(bss);
2427         }
2428
2429         nl80211_destroy_bss(drv->first_bss);
2430
2431         os_free(drv->filter_ssids);
2432
2433         os_free(drv->auth_ie);
2434
2435         if (drv->in_interface_list)
2436                 dl_list_del(&drv->list);
2437
2438         os_free(drv->extended_capa);
2439         os_free(drv->extended_capa_mask);
2440         os_free(drv->first_bss);
2441         os_free(drv);
2442 }
2443
2444
2445 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2446 {
2447         switch (alg) {
2448         case WPA_ALG_WEP:
2449                 if (key_len == 5)
2450                         return WLAN_CIPHER_SUITE_WEP40;
2451                 return WLAN_CIPHER_SUITE_WEP104;
2452         case WPA_ALG_TKIP:
2453                 return WLAN_CIPHER_SUITE_TKIP;
2454         case WPA_ALG_CCMP:
2455                 return WLAN_CIPHER_SUITE_CCMP;
2456         case WPA_ALG_GCMP:
2457                 return WLAN_CIPHER_SUITE_GCMP;
2458         case WPA_ALG_CCMP_256:
2459                 return WLAN_CIPHER_SUITE_CCMP_256;
2460         case WPA_ALG_GCMP_256:
2461                 return WLAN_CIPHER_SUITE_GCMP_256;
2462         case WPA_ALG_IGTK:
2463                 return WLAN_CIPHER_SUITE_AES_CMAC;
2464         case WPA_ALG_BIP_GMAC_128:
2465                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2466         case WPA_ALG_BIP_GMAC_256:
2467                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2468         case WPA_ALG_BIP_CMAC_256:
2469                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2470         case WPA_ALG_SMS4:
2471                 return WLAN_CIPHER_SUITE_SMS4;
2472         case WPA_ALG_KRK:
2473                 return WLAN_CIPHER_SUITE_KRK;
2474         case WPA_ALG_NONE:
2475         case WPA_ALG_PMK:
2476                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2477                            alg);
2478                 return 0;
2479         }
2480
2481         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2482                    alg);
2483         return 0;
2484 }
2485
2486
2487 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2488 {
2489         switch (cipher) {
2490         case WPA_CIPHER_CCMP_256:
2491                 return WLAN_CIPHER_SUITE_CCMP_256;
2492         case WPA_CIPHER_GCMP_256:
2493                 return WLAN_CIPHER_SUITE_GCMP_256;
2494         case WPA_CIPHER_CCMP:
2495                 return WLAN_CIPHER_SUITE_CCMP;
2496         case WPA_CIPHER_GCMP:
2497                 return WLAN_CIPHER_SUITE_GCMP;
2498         case WPA_CIPHER_TKIP:
2499                 return WLAN_CIPHER_SUITE_TKIP;
2500         case WPA_CIPHER_WEP104:
2501                 return WLAN_CIPHER_SUITE_WEP104;
2502         case WPA_CIPHER_WEP40:
2503                 return WLAN_CIPHER_SUITE_WEP40;
2504         case WPA_CIPHER_GTK_NOT_USED:
2505                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2506         }
2507
2508         return 0;
2509 }
2510
2511
2512 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2513                                        int max_suites)
2514 {
2515         int num_suites = 0;
2516
2517         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2518                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2519         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2520                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2521         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2522                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2523         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2524                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2525         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2526                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2527         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2528                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2529         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2530                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2531
2532         return num_suites;
2533 }
2534
2535
2536 #ifdef CONFIG_DRIVER_NL80211_QCA
2537 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2538                                   const u8 *key, size_t key_len)
2539 {
2540         struct nl_msg *msg;
2541         int ret;
2542
2543         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2544                 return 0;
2545
2546         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2547             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2548             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2549                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2550             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2551                 nl80211_nlmsg_clear(msg);
2552                 nlmsg_free(msg);
2553                 return -1;
2554         }
2555         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2556         if (ret) {
2557                 wpa_printf(MSG_DEBUG,
2558                            "nl80211: Key management set key failed: ret=%d (%s)",
2559                            ret, strerror(-ret));
2560         }
2561
2562         return ret;
2563 }
2564 #endif /* CONFIG_DRIVER_NL80211_QCA */
2565
2566
2567 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2568                                       enum wpa_alg alg, const u8 *addr,
2569                                       int key_idx, int set_tx,
2570                                       const u8 *seq, size_t seq_len,
2571                                       const u8 *key, size_t key_len)
2572 {
2573         struct wpa_driver_nl80211_data *drv = bss->drv;
2574         int ifindex;
2575         struct nl_msg *msg = NULL;
2576         int ret;
2577         int tdls = 0;
2578
2579         /* Ignore for P2P Device */
2580         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2581                 return 0;
2582
2583         ifindex = if_nametoindex(ifname);
2584         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2585                    "set_tx=%d seq_len=%lu key_len=%lu",
2586                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2587                    (unsigned long) seq_len, (unsigned long) key_len);
2588 #ifdef CONFIG_TDLS
2589         if (key_idx == -1) {
2590                 key_idx = 0;
2591                 tdls = 1;
2592         }
2593 #endif /* CONFIG_TDLS */
2594
2595 #ifdef CONFIG_DRIVER_NL80211_QCA
2596         if (alg == WPA_ALG_PMK &&
2597             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2598                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2599                            __func__);
2600                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2601                 return ret;
2602         }
2603 #endif /* CONFIG_DRIVER_NL80211_QCA */
2604
2605         if (alg == WPA_ALG_NONE) {
2606                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2607                 if (!msg)
2608                         return -ENOBUFS;
2609         } else {
2610                 u32 suite;
2611
2612                 suite = wpa_alg_to_cipher_suite(alg, key_len);
2613                 if (!suite)
2614                         goto fail;
2615                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2616                 if (!msg ||
2617                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2618                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER, suite))
2619                         goto fail;
2620                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2621         }
2622
2623         if (seq && seq_len) {
2624                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2625                         goto fail;
2626                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2627         }
2628
2629         if (addr && !is_broadcast_ether_addr(addr)) {
2630                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2631                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2632                         goto fail;
2633
2634                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2635                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2636                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2637                                         NL80211_KEYTYPE_GROUP))
2638                                 goto fail;
2639                 }
2640         } else if (addr && is_broadcast_ether_addr(addr)) {
2641                 struct nlattr *types;
2642
2643                 wpa_printf(MSG_DEBUG, "   broadcast key");
2644
2645                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2646                 if (!types ||
2647                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2648                         goto fail;
2649                 nla_nest_end(msg, types);
2650         }
2651         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2652                 goto fail;
2653
2654         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2655         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2656                 ret = 0;
2657         if (ret)
2658                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2659                            ret, strerror(-ret));
2660
2661         /*
2662          * If we failed or don't need to set the default TX key (below),
2663          * we're done here.
2664          */
2665         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2666                 return ret;
2667         if (is_ap_interface(drv->nlmode) && addr &&
2668             !is_broadcast_ether_addr(addr))
2669                 return ret;
2670
2671         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2672         if (!msg ||
2673             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2674             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2675                                alg == WPA_ALG_BIP_GMAC_128 ||
2676                                alg == WPA_ALG_BIP_GMAC_256 ||
2677                                alg == WPA_ALG_BIP_CMAC_256) ?
2678                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2679                          NL80211_ATTR_KEY_DEFAULT))
2680                 goto fail;
2681         if (addr && is_broadcast_ether_addr(addr)) {
2682                 struct nlattr *types;
2683
2684                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2685                 if (!types ||
2686                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2687                         goto fail;
2688                 nla_nest_end(msg, types);
2689         } else if (addr) {
2690                 struct nlattr *types;
2691
2692                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2693                 if (!types ||
2694                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2695                         goto fail;
2696                 nla_nest_end(msg, types);
2697         }
2698
2699         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2700         if (ret == -ENOENT)
2701                 ret = 0;
2702         if (ret)
2703                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2704                            "err=%d %s)", ret, strerror(-ret));
2705         return ret;
2706
2707 fail:
2708         nl80211_nlmsg_clear(msg);
2709         nlmsg_free(msg);
2710         return -ENOBUFS;
2711 }
2712
2713
2714 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2715                       int key_idx, int defkey,
2716                       const u8 *seq, size_t seq_len,
2717                       const u8 *key, size_t key_len)
2718 {
2719         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2720         u32 suite;
2721
2722         if (!key_attr)
2723                 return -1;
2724
2725         suite = wpa_alg_to_cipher_suite(alg, key_len);
2726         if (!suite)
2727                 return -1;
2728
2729         if (defkey && alg == WPA_ALG_IGTK) {
2730                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2731                         return -1;
2732         } else if (defkey) {
2733                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2734                         return -1;
2735         }
2736
2737         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2738             nla_put_u32(msg, NL80211_KEY_CIPHER, suite) ||
2739             (seq && seq_len &&
2740              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2741             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2742                 return -1;
2743
2744         nla_nest_end(msg, key_attr);
2745
2746         return 0;
2747 }
2748
2749
2750 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2751                                  struct nl_msg *msg)
2752 {
2753         int i, privacy = 0;
2754         struct nlattr *nl_keys, *nl_key;
2755
2756         for (i = 0; i < 4; i++) {
2757                 if (!params->wep_key[i])
2758                         continue;
2759                 privacy = 1;
2760                 break;
2761         }
2762         if (params->wps == WPS_MODE_PRIVACY)
2763                 privacy = 1;
2764         if (params->pairwise_suite &&
2765             params->pairwise_suite != WPA_CIPHER_NONE)
2766                 privacy = 1;
2767
2768         if (!privacy)
2769                 return 0;
2770
2771         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2772                 return -ENOBUFS;
2773
2774         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2775         if (!nl_keys)
2776                 return -ENOBUFS;
2777
2778         for (i = 0; i < 4; i++) {
2779                 if (!params->wep_key[i])
2780                         continue;
2781
2782                 nl_key = nla_nest_start(msg, i);
2783                 if (!nl_key ||
2784                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2785                             params->wep_key[i]) ||
2786                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2787                                 params->wep_key_len[i] == 5 ?
2788                                 WLAN_CIPHER_SUITE_WEP40 :
2789                                 WLAN_CIPHER_SUITE_WEP104) ||
2790                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2791                     (i == params->wep_tx_keyidx &&
2792                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2793                         return -ENOBUFS;
2794
2795                 nla_nest_end(msg, nl_key);
2796         }
2797         nla_nest_end(msg, nl_keys);
2798
2799         return 0;
2800 }
2801
2802
2803 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2804                             const u8 *addr, int cmd, u16 reason_code,
2805                             int local_state_change)
2806 {
2807         int ret;
2808         struct nl_msg *msg;
2809
2810         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2811             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2812             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2813             (local_state_change &&
2814              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2815                 nlmsg_free(msg);
2816                 return -1;
2817         }
2818
2819         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2820         if (ret) {
2821                 wpa_dbg(drv->ctx, MSG_DEBUG,
2822                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2823                         reason_code, ret, strerror(-ret));
2824         }
2825         return ret;
2826 }
2827
2828
2829 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2830                                          int reason_code)
2831 {
2832         int ret;
2833
2834         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2835         nl80211_mark_disconnected(drv);
2836         /* Disconnect command doesn't need BSSID - it uses cached value */
2837         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2838                                       reason_code, 0);
2839         /*
2840          * For locally generated disconnect, supplicant already generates a
2841          * DEAUTH event, so ignore the event from NL80211.
2842          */
2843         drv->ignore_next_local_disconnect = ret == 0;
2844
2845         return ret;
2846 }
2847
2848
2849 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2850                                              const u8 *addr, int reason_code)
2851 {
2852         struct wpa_driver_nl80211_data *drv = bss->drv;
2853         int ret;
2854
2855         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2856                 nl80211_mark_disconnected(drv);
2857                 return nl80211_leave_ibss(drv, 1);
2858         }
2859         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2860                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2861         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2862                    __func__, MAC2STR(addr), reason_code);
2863         nl80211_mark_disconnected(drv);
2864         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2865                                       reason_code, 0);
2866         /*
2867          * For locally generated deauthenticate, supplicant already generates a
2868          * DEAUTH event, so ignore the event from NL80211.
2869          */
2870         drv->ignore_next_local_deauth = ret == 0;
2871         return ret;
2872 }
2873
2874
2875 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2876                                      struct wpa_driver_auth_params *params)
2877 {
2878         int i;
2879
2880         drv->auth_freq = params->freq;
2881         drv->auth_alg = params->auth_alg;
2882         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2883         drv->auth_local_state_change = params->local_state_change;
2884         drv->auth_p2p = params->p2p;
2885
2886         if (params->bssid)
2887                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2888         else
2889                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2890
2891         if (params->ssid) {
2892                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2893                 drv->auth_ssid_len = params->ssid_len;
2894         } else
2895                 drv->auth_ssid_len = 0;
2896
2897
2898         os_free(drv->auth_ie);
2899         drv->auth_ie = NULL;
2900         drv->auth_ie_len = 0;
2901         if (params->ie) {
2902                 drv->auth_ie = os_malloc(params->ie_len);
2903                 if (drv->auth_ie) {
2904                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2905                         drv->auth_ie_len = params->ie_len;
2906                 }
2907         }
2908
2909         for (i = 0; i < 4; i++) {
2910                 if (params->wep_key[i] && params->wep_key_len[i] &&
2911                     params->wep_key_len[i] <= 16) {
2912                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2913                                   params->wep_key_len[i]);
2914                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2915                 } else
2916                         drv->auth_wep_key_len[i] = 0;
2917         }
2918 }
2919
2920
2921 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2922 {
2923         struct wpa_driver_nl80211_data *drv = bss->drv;
2924
2925         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2926                 return;
2927
2928         /*
2929          * Looks like we failed to unmask 11b rates previously. This could
2930          * happen, e.g., if the interface was down at the point in time when a
2931          * P2P group was terminated.
2932          */
2933         wpa_printf(MSG_DEBUG,
2934                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2935                    bss->ifname);
2936         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2937 }
2938
2939
2940 static int wpa_driver_nl80211_authenticate(
2941         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2942 {
2943         struct wpa_driver_nl80211_data *drv = bss->drv;
2944         int ret = -1, i;
2945         struct nl_msg *msg;
2946         enum nl80211_auth_type type;
2947         enum nl80211_iftype nlmode;
2948         int count = 0;
2949         int is_retry;
2950
2951         nl80211_unmask_11b_rates(bss);
2952
2953         is_retry = drv->retry_auth;
2954         drv->retry_auth = 0;
2955         drv->ignore_deauth_event = 0;
2956
2957         nl80211_mark_disconnected(drv);
2958         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2959         if (params->bssid)
2960                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2961         else
2962                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2963         /* FIX: IBSS mode */
2964         nlmode = params->p2p ?
2965                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2966         if (drv->nlmode != nlmode &&
2967             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2968                 return -1;
2969
2970 retry:
2971         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2972                    drv->ifindex);
2973
2974         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2975         if (!msg)
2976                 goto fail;
2977
2978         for (i = 0; i < 4; i++) {
2979                 if (!params->wep_key[i])
2980                         continue;
2981                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2982                                            NULL, i,
2983                                            i == params->wep_tx_keyidx, NULL, 0,
2984                                            params->wep_key[i],
2985                                            params->wep_key_len[i]);
2986                 if (params->wep_tx_keyidx != i)
2987                         continue;
2988                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2989                                params->wep_key[i], params->wep_key_len[i]))
2990                         goto fail;
2991         }
2992
2993         if (params->bssid) {
2994                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2995                            MAC2STR(params->bssid));
2996                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2997                         goto fail;
2998         }
2999         if (params->freq) {
3000                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3001                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
3002                         goto fail;
3003         }
3004         if (params->ssid) {
3005                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3006                                   params->ssid, params->ssid_len);
3007                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
3008                             params->ssid))
3009                         goto fail;
3010         }
3011         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3012         if (params->ie &&
3013             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
3014                 goto fail;
3015         if (params->sae_data) {
3016                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3017                             params->sae_data_len);
3018                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3019                             params->sae_data))
3020                         goto fail;
3021         }
3022         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3023                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3024         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3025                 type = NL80211_AUTHTYPE_SHARED_KEY;
3026         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3027                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3028         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3029                 type = NL80211_AUTHTYPE_FT;
3030         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3031                 type = NL80211_AUTHTYPE_SAE;
3032         else
3033                 goto fail;
3034         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3035         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
3036                 goto fail;
3037         if (params->local_state_change) {
3038                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3039                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
3040                         goto fail;
3041         }
3042
3043         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3044         msg = NULL;
3045         if (ret) {
3046                 wpa_dbg(drv->ctx, MSG_DEBUG,
3047                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3048                         ret, strerror(-ret));
3049                 count++;
3050                 if (ret == -EALREADY && count == 1 && params->bssid &&
3051                     !params->local_state_change) {
3052                         /*
3053                          * mac80211 does not currently accept new
3054                          * authentication if we are already authenticated. As a
3055                          * workaround, force deauthentication and try again.
3056                          */
3057                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3058                                    "after forced deauthentication");
3059                         drv->ignore_deauth_event = 1;
3060                         wpa_driver_nl80211_deauthenticate(
3061                                 bss, params->bssid,
3062                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3063                         nlmsg_free(msg);
3064                         goto retry;
3065                 }
3066
3067                 if (ret == -ENOENT && params->freq && !is_retry) {
3068                         /*
3069                          * cfg80211 has likely expired the BSS entry even
3070                          * though it was previously available in our internal
3071                          * BSS table. To recover quickly, start a single
3072                          * channel scan on the specified channel.
3073                          */
3074                         struct wpa_driver_scan_params scan;
3075                         int freqs[2];
3076
3077                         os_memset(&scan, 0, sizeof(scan));
3078                         scan.num_ssids = 1;
3079                         if (params->ssid) {
3080                                 scan.ssids[0].ssid = params->ssid;
3081                                 scan.ssids[0].ssid_len = params->ssid_len;
3082                         }
3083                         freqs[0] = params->freq;
3084                         freqs[1] = 0;
3085                         scan.freqs = freqs;
3086                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3087                                    "channel scan to refresh cfg80211 BSS "
3088                                    "entry");
3089                         ret = wpa_driver_nl80211_scan(bss, &scan);
3090                         if (ret == 0) {
3091                                 nl80211_copy_auth_params(drv, params);
3092                                 drv->scan_for_auth = 1;
3093                         }
3094                 } else if (is_retry) {
3095                         /*
3096                          * Need to indicate this with an event since the return
3097                          * value from the retry is not delivered to core code.
3098                          */
3099                         union wpa_event_data event;
3100                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3101                                    "failed");
3102                         os_memset(&event, 0, sizeof(event));
3103                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3104                                   ETH_ALEN);
3105                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3106                                              &event);
3107                 }
3108         } else {
3109                 wpa_printf(MSG_DEBUG,
3110                            "nl80211: Authentication request send successfully");
3111         }
3112
3113 fail:
3114         nlmsg_free(msg);
3115         return ret;
3116 }
3117
3118
3119 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3120 {
3121         struct wpa_driver_auth_params params;
3122         struct i802_bss *bss = drv->first_bss;
3123         int i;
3124
3125         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3126
3127         os_memset(&params, 0, sizeof(params));
3128         params.freq = drv->auth_freq;
3129         params.auth_alg = drv->auth_alg;
3130         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3131         params.local_state_change = drv->auth_local_state_change;
3132         params.p2p = drv->auth_p2p;
3133
3134         if (!is_zero_ether_addr(drv->auth_bssid_))
3135                 params.bssid = drv->auth_bssid_;
3136
3137         if (drv->auth_ssid_len) {
3138                 params.ssid = drv->auth_ssid;
3139                 params.ssid_len = drv->auth_ssid_len;
3140         }
3141
3142         params.ie = drv->auth_ie;
3143         params.ie_len = drv->auth_ie_len;
3144
3145         for (i = 0; i < 4; i++) {
3146                 if (drv->auth_wep_key_len[i]) {
3147                         params.wep_key[i] = drv->auth_wep_key[i];
3148                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3149                 }
3150         }
3151
3152         drv->retry_auth = 1;
3153         return wpa_driver_nl80211_authenticate(bss, &params);
3154 }
3155
3156
3157 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3158                                          const void *data, size_t len,
3159                                          int encrypt, int noack,
3160                                          unsigned int freq, int no_cck,
3161                                          int offchanok, unsigned int wait_time,
3162                                          const u16 *csa_offs,
3163                                          size_t csa_offs_len)
3164 {
3165         struct wpa_driver_nl80211_data *drv = bss->drv;
3166         u64 cookie;
3167         int res;
3168
3169         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3170                 freq = nl80211_get_assoc_freq(drv);
3171                 wpa_printf(MSG_DEBUG,
3172                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3173                            freq);
3174         }
3175         if (freq == 0) {
3176                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3177                            bss->freq);
3178                 freq = bss->freq;
3179         }
3180
3181         if (drv->use_monitor) {
3182                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3183                            freq, bss->freq);
3184                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3185         }
3186
3187         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3188         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3189                                      &cookie, no_cck, noack, offchanok,
3190                                      csa_offs, csa_offs_len);
3191         if (res == 0 && !noack) {
3192                 const struct ieee80211_mgmt *mgmt;
3193                 u16 fc;
3194
3195                 mgmt = (const struct ieee80211_mgmt *) data;
3196                 fc = le_to_host16(mgmt->frame_control);
3197                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3198                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3199                         wpa_printf(MSG_MSGDUMP,
3200                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3201                                    (long long unsigned int)
3202                                    drv->send_action_cookie,
3203                                    (long long unsigned int) cookie);
3204                         drv->send_action_cookie = cookie;
3205                 }
3206         }
3207
3208         return res;
3209 }
3210
3211
3212 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3213                                         size_t data_len, int noack,
3214                                         unsigned int freq, int no_cck,
3215                                         int offchanok,
3216                                         unsigned int wait_time,
3217                                         const u16 *csa_offs,
3218                                         size_t csa_offs_len)
3219 {
3220         struct wpa_driver_nl80211_data *drv = bss->drv;
3221         struct ieee80211_mgmt *mgmt;
3222         int encrypt = 1;
3223         u16 fc;
3224
3225         mgmt = (struct ieee80211_mgmt *) data;
3226         fc = le_to_host16(mgmt->frame_control);
3227         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3228                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3229                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3230                    fc, fc2str(fc), drv->nlmode);
3231
3232         if ((is_sta_interface(drv->nlmode) ||
3233              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3234             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3235             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3236                 /*
3237                  * The use of last_mgmt_freq is a bit of a hack,
3238                  * but it works due to the single-threaded nature
3239                  * of wpa_supplicant.
3240                  */
3241                 if (freq == 0) {
3242                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3243                                    drv->last_mgmt_freq);
3244                         freq = drv->last_mgmt_freq;
3245                 }
3246                 return nl80211_send_frame_cmd(bss, freq, 0,
3247                                               data, data_len, NULL, 1, noack,
3248                                               1, csa_offs, csa_offs_len);
3249         }
3250
3251         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3252                 if (freq == 0) {
3253                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3254                                    bss->freq);
3255                         freq = bss->freq;
3256                 }
3257                 return nl80211_send_frame_cmd(bss, freq,
3258                                               (int) freq == bss->freq ? 0 :
3259                                               wait_time,
3260                                               data, data_len,
3261                                               &drv->send_action_cookie,
3262                                               no_cck, noack, offchanok,
3263                                               csa_offs, csa_offs_len);
3264         }
3265
3266         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3267             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3268                 /*
3269                  * Only one of the authentication frame types is encrypted.
3270                  * In order for static WEP encryption to work properly (i.e.,
3271                  * to not encrypt the frame), we need to tell mac80211 about
3272                  * the frames that must not be encrypted.
3273                  */
3274                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3275                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3276                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3277                         encrypt = 0;
3278         }
3279
3280         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3281         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3282                                              noack, freq, no_cck, offchanok,
3283                                              wait_time, csa_offs,
3284                                              csa_offs_len);
3285 }
3286
3287
3288 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3289 {
3290         u8 rates[NL80211_MAX_SUPP_RATES];
3291         u8 rates_len = 0;
3292         int i;
3293
3294         if (!basic_rates)
3295                 return 0;
3296
3297         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3298                 rates[rates_len++] = basic_rates[i] / 5;
3299
3300         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3301 }
3302
3303
3304 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3305                            int slot, int ht_opmode, int ap_isolate,
3306                            const int *basic_rates)
3307 {
3308         struct wpa_driver_nl80211_data *drv = bss->drv;
3309         struct nl_msg *msg;
3310
3311         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3312             (cts >= 0 &&
3313              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3314             (preamble >= 0 &&
3315              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3316             (slot >= 0 &&
3317              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3318             (ht_opmode >= 0 &&
3319              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3320             (ap_isolate >= 0 &&
3321              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3322             nl80211_put_basic_rates(msg, basic_rates)) {
3323                 nlmsg_free(msg);
3324                 return -ENOBUFS;
3325         }
3326
3327         return send_and_recv_msgs(drv, msg, NULL, NULL);
3328 }
3329
3330
3331 static int wpa_driver_nl80211_set_acl(void *priv,
3332                                       struct hostapd_acl_params *params)
3333 {
3334         struct i802_bss *bss = priv;
3335         struct wpa_driver_nl80211_data *drv = bss->drv;
3336         struct nl_msg *msg;
3337         struct nl_msg *acl;
3338         unsigned int i;
3339         int ret;
3340
3341         if (!(drv->capa.max_acl_mac_addrs))
3342                 return -ENOTSUP;
3343
3344         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3345                 return -ENOTSUP;
3346
3347         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3348                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3349
3350         acl = nlmsg_alloc();
3351         if (!acl)
3352                 return -ENOMEM;
3353         for (i = 0; i < params->num_mac_acl; i++) {
3354                 if (nla_put(acl, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3355                         nlmsg_free(acl);
3356                         return -ENOMEM;
3357                 }
3358         }
3359
3360         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3361             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3362                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3363                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3364             nla_put_nested(msg, NL80211_ATTR_MAC_ADDRS, acl)) {
3365                 nlmsg_free(msg);
3366                 nlmsg_free(acl);
3367                 return -ENOMEM;
3368         }
3369         nlmsg_free(acl);
3370
3371         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3372         if (ret) {
3373                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3374                            ret, strerror(-ret));
3375         }
3376
3377         return ret;
3378 }
3379
3380
3381 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3382 {
3383         if (beacon_int > 0) {
3384                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3385                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3386                                    beacon_int);
3387         }
3388
3389         return 0;
3390 }
3391
3392
3393 static int wpa_driver_nl80211_set_ap(void *priv,
3394                                      struct wpa_driver_ap_params *params)
3395 {
3396         struct i802_bss *bss = priv;
3397         struct wpa_driver_nl80211_data *drv = bss->drv;
3398         struct nl_msg *msg;
3399         u8 cmd = NL80211_CMD_NEW_BEACON;
3400         int ret;
3401         int beacon_set;
3402         int num_suites;
3403         int smps_mode;
3404         u32 suites[10], suite;
3405         u32 ver;
3406
3407         beacon_set = params->reenable ? 0 : bss->beacon_set;
3408
3409         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3410                    beacon_set);
3411         if (beacon_set)
3412                 cmd = NL80211_CMD_SET_BEACON;
3413
3414         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3415                     params->head, params->head_len);
3416         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3417                     params->tail, params->tail_len);
3418         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3419         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3420         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3421         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3422                           params->ssid, params->ssid_len);
3423         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3424             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3425                     params->head) ||
3426             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3427                     params->tail) ||
3428             nl80211_put_beacon_int(msg, params->beacon_int) ||
3429             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3430             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3431                 goto fail;
3432         if (params->proberesp && params->proberesp_len) {
3433                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3434                             params->proberesp, params->proberesp_len);
3435                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3436                             params->proberesp))
3437                         goto fail;
3438         }
3439         switch (params->hide_ssid) {
3440         case NO_SSID_HIDING:
3441                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3442                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3443                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3444                         goto fail;
3445                 break;
3446         case HIDDEN_SSID_ZERO_LEN:
3447                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3448                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3449                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3450                         goto fail;
3451                 break;
3452         case HIDDEN_SSID_ZERO_CONTENTS:
3453                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3454                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3455                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3456                         goto fail;
3457                 break;
3458         }
3459         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3460         if (params->privacy &&
3461             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3462                 goto fail;
3463         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3464         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3465             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3466                 /* Leave out the attribute */
3467         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3468                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3469                                 NL80211_AUTHTYPE_SHARED_KEY))
3470                         goto fail;
3471         } else {
3472                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3473                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3474                         goto fail;
3475         }
3476
3477         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3478         ver = 0;
3479         if (params->wpa_version & WPA_PROTO_WPA)
3480                 ver |= NL80211_WPA_VERSION_1;
3481         if (params->wpa_version & WPA_PROTO_RSN)
3482                 ver |= NL80211_WPA_VERSION_2;
3483         if (ver &&
3484             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3485                 goto fail;
3486
3487         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3488                    params->key_mgmt_suites);
3489         num_suites = 0;
3490         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3491                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3492         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3493                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3494         if (num_suites &&
3495             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3496                     suites))
3497                 goto fail;
3498
3499         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3500             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3501             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3502                 goto fail;
3503
3504         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3505                    params->pairwise_ciphers);
3506         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3507                                                  suites, ARRAY_SIZE(suites));
3508         if (num_suites &&
3509             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3510                     num_suites * sizeof(u32), suites))
3511                 goto fail;
3512
3513         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3514                    params->group_cipher);
3515         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3516         if (suite &&
3517             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3518                 goto fail;
3519
3520         switch (params->smps_mode) {
3521         case HT_CAP_INFO_SMPS_DYNAMIC:
3522                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3523                 smps_mode = NL80211_SMPS_DYNAMIC;
3524                 break;
3525         case HT_CAP_INFO_SMPS_STATIC:
3526                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3527                 smps_mode = NL80211_SMPS_STATIC;
3528                 break;
3529         default:
3530                 /* invalid - fallback to smps off */
3531         case HT_CAP_INFO_SMPS_DISABLED:
3532                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3533                 smps_mode = NL80211_SMPS_OFF;
3534                 break;
3535         }
3536         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3537                 goto fail;
3538
3539         if (params->beacon_ies) {
3540                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3541                                 params->beacon_ies);
3542                 if (nla_put(msg, NL80211_ATTR_IE,
3543                             wpabuf_len(params->beacon_ies),
3544                             wpabuf_head(params->beacon_ies)))
3545                         goto fail;
3546         }
3547         if (params->proberesp_ies) {
3548                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3549                                 params->proberesp_ies);
3550                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3551                             wpabuf_len(params->proberesp_ies),
3552                             wpabuf_head(params->proberesp_ies)))
3553                         goto fail;
3554         }
3555         if (params->assocresp_ies) {
3556                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3557                                 params->assocresp_ies);
3558                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3559                             wpabuf_len(params->assocresp_ies),
3560                             wpabuf_head(params->assocresp_ies)))
3561                         goto fail;
3562         }
3563
3564         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3565                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3566                            params->ap_max_inactivity);
3567                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3568                                 params->ap_max_inactivity))
3569                         goto fail;
3570         }
3571
3572 #ifdef CONFIG_P2P
3573         if (params->p2p_go_ctwindow > 0) {
3574                 if (drv->p2p_go_ctwindow_supported) {
3575                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3576                                    params->p2p_go_ctwindow);
3577                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3578                                        params->p2p_go_ctwindow))
3579                                 goto fail;
3580                 } else {
3581                         wpa_printf(MSG_INFO,
3582                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3583                 }
3584         }
3585 #endif /* CONFIG_P2P */
3586
3587         if (params->pbss) {
3588                 wpa_printf(MSG_DEBUG, "nl80211: PBSS");
3589                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
3590                         goto fail;
3591         }
3592
3593         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3594         if (ret) {
3595                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3596                            ret, strerror(-ret));
3597         } else {
3598                 bss->beacon_set = 1;
3599                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3600                                 params->short_slot_time, params->ht_opmode,
3601                                 params->isolate, params->basic_rates);
3602                 if (beacon_set && params->freq &&
3603                     params->freq->bandwidth != bss->bandwidth) {
3604                         wpa_printf(MSG_DEBUG,
3605                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3606                                    bss->ifname, bss->bandwidth,
3607                                    params->freq->bandwidth);
3608                         ret = nl80211_set_channel(bss, params->freq, 1);
3609                         if (ret) {
3610                                 wpa_printf(MSG_DEBUG,
3611                                            "nl80211: Frequency set failed: %d (%s)",
3612                                            ret, strerror(-ret));
3613                         } else {
3614                                 wpa_printf(MSG_DEBUG,
3615                                            "nl80211: Frequency set succeeded for ht2040 coex");
3616                                 bss->bandwidth = params->freq->bandwidth;
3617                         }
3618                 } else if (!beacon_set) {
3619                         /*
3620                          * cfg80211 updates the driver on frequence change in AP
3621                          * mode only at the point when beaconing is started, so
3622                          * set the initial value here.
3623                          */
3624                         bss->bandwidth = params->freq->bandwidth;
3625                 }
3626         }
3627         return ret;
3628 fail:
3629         nlmsg_free(msg);
3630         return -ENOBUFS;
3631 }
3632
3633
3634 static int nl80211_put_freq_params(struct nl_msg *msg,
3635                                    const struct hostapd_freq_params *freq)
3636 {
3637         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3638         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3639                 return -ENOBUFS;
3640
3641         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3642         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3643
3644         if (freq->vht_enabled) {
3645                 enum nl80211_chan_width cw;
3646
3647                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3648                 switch (freq->bandwidth) {
3649                 case 20:
3650                         cw = NL80211_CHAN_WIDTH_20;
3651                         break;
3652                 case 40:
3653                         cw = NL80211_CHAN_WIDTH_40;
3654                         break;
3655                 case 80:
3656                         if (freq->center_freq2)
3657                                 cw = NL80211_CHAN_WIDTH_80P80;
3658                         else
3659                                 cw = NL80211_CHAN_WIDTH_80;
3660                         break;
3661                 case 160:
3662                         cw = NL80211_CHAN_WIDTH_160;
3663                         break;
3664                 default:
3665                         return -EINVAL;
3666                 }
3667
3668                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3669                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3670                            freq->center_freq1);
3671                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3672                            freq->center_freq2);
3673                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3674                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3675                                 freq->center_freq1) ||
3676                     (freq->center_freq2 &&
3677                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3678                                  freq->center_freq2)))
3679                         return -ENOBUFS;
3680         } else if (freq->ht_enabled) {
3681                 enum nl80211_channel_type ct;
3682
3683                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3684                            freq->sec_channel_offset);
3685                 switch (freq->sec_channel_offset) {
3686                 case -1:
3687                         ct = NL80211_CHAN_HT40MINUS;
3688                         break;
3689                 case 1:
3690                         ct = NL80211_CHAN_HT40PLUS;
3691                         break;
3692                 default:
3693                         ct = NL80211_CHAN_HT20;
3694                         break;
3695                 }
3696
3697                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3698                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3699                         return -ENOBUFS;
3700         }
3701         return 0;
3702 }
3703
3704
3705 static int nl80211_set_channel(struct i802_bss *bss,
3706                                struct hostapd_freq_params *freq, int set_chan)
3707 {
3708         struct wpa_driver_nl80211_data *drv = bss->drv;
3709         struct nl_msg *msg;
3710         int ret;
3711
3712         wpa_printf(MSG_DEBUG,
3713                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3714                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3715                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3716
3717         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3718                               NL80211_CMD_SET_WIPHY);
3719         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3720                 nlmsg_free(msg);
3721                 return -1;
3722         }
3723
3724         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3725         if (ret == 0) {
3726                 bss->freq = freq->freq;
3727                 return 0;
3728         }
3729         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3730                    "%d (%s)", freq->freq, ret, strerror(-ret));
3731         return -1;
3732 }
3733
3734
3735 static u32 sta_flags_nl80211(int flags)
3736 {
3737         u32 f = 0;
3738
3739         if (flags & WPA_STA_AUTHORIZED)
3740                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3741         if (flags & WPA_STA_WMM)
3742                 f |= BIT(NL80211_STA_FLAG_WME);
3743         if (flags & WPA_STA_SHORT_PREAMBLE)
3744                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3745         if (flags & WPA_STA_MFP)
3746                 f |= BIT(NL80211_STA_FLAG_MFP);
3747         if (flags & WPA_STA_TDLS_PEER)
3748                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3749         if (flags & WPA_STA_AUTHENTICATED)
3750                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3751         if (flags & WPA_STA_ASSOCIATED)
3752                 f |= BIT(NL80211_STA_FLAG_ASSOCIATED);
3753
3754         return f;
3755 }
3756
3757
3758 #ifdef CONFIG_MESH
3759 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3760 {
3761         switch (state) {
3762         case PLINK_LISTEN:
3763                 return NL80211_PLINK_LISTEN;
3764         case PLINK_OPEN_SENT:
3765                 return NL80211_PLINK_OPN_SNT;
3766         case PLINK_OPEN_RCVD:
3767                 return NL80211_PLINK_OPN_RCVD;
3768         case PLINK_CNF_RCVD:
3769                 return NL80211_PLINK_CNF_RCVD;
3770         case PLINK_ESTAB:
3771                 return NL80211_PLINK_ESTAB;
3772         case PLINK_HOLDING:
3773                 return NL80211_PLINK_HOLDING;
3774         case PLINK_BLOCKED:
3775                 return NL80211_PLINK_BLOCKED;
3776         default:
3777                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3778                            state);
3779         }
3780         return -1;
3781 }
3782 #endif /* CONFIG_MESH */
3783
3784
3785 static int wpa_driver_nl80211_sta_add(void *priv,
3786                                       struct hostapd_sta_add_params *params)
3787 {
3788         struct i802_bss *bss = priv;
3789         struct wpa_driver_nl80211_data *drv = bss->drv;
3790         struct nl_msg *msg;
3791         struct nl80211_sta_flag_update upd;
3792         int ret = -ENOBUFS;
3793
3794         if ((params->flags & WPA_STA_TDLS_PEER) &&
3795             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3796                 return -EOPNOTSUPP;
3797
3798         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3799                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3800         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3801                               NL80211_CMD_NEW_STATION);
3802         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3803                 goto fail;
3804
3805         /*
3806          * Set the below properties only in one of the following cases:
3807          * 1. New station is added, already associated.
3808          * 2. Set WPA_STA_TDLS_PEER station.
3809          * 3. Set an already added unassociated station, if driver supports
3810          * full AP client state. (Set these properties after station became
3811          * associated will be rejected by the driver).
3812          */
3813         if (!params->set || (params->flags & WPA_STA_TDLS_PEER) ||
3814             (params->set && FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3815              (params->flags & WPA_STA_ASSOCIATED))) {
3816                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3817                             params->supp_rates, params->supp_rates_len);
3818                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3819                            params->capability);
3820                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3821                             params->supp_rates_len, params->supp_rates) ||
3822                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3823                                 params->capability))
3824                         goto fail;
3825
3826                 if (params->ht_capabilities) {
3827                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3828                                     (u8 *) params->ht_capabilities,
3829                                     sizeof(*params->ht_capabilities));
3830                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3831                                     sizeof(*params->ht_capabilities),
3832                                     params->ht_capabilities))
3833                                 goto fail;
3834                 }
3835
3836                 if (params->vht_capabilities) {
3837                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3838                                     (u8 *) params->vht_capabilities,
3839                                     sizeof(*params->vht_capabilities));
3840                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3841                                     sizeof(*params->vht_capabilities),
3842                                     params->vht_capabilities))
3843                                 goto fail;
3844                 }
3845
3846                 if (params->ext_capab) {
3847                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3848                                     params->ext_capab, params->ext_capab_len);
3849                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3850                                     params->ext_capab_len, params->ext_capab))
3851                                 goto fail;
3852                 }
3853         }
3854         if (!params->set) {
3855                 if (params->aid) {
3856                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3857                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3858                                 goto fail;
3859                 } else {
3860                         /*
3861                          * cfg80211 validates that AID is non-zero, so we have
3862                          * to make this a non-zero value for the TDLS case where
3863                          * a dummy STA entry is used for now and for a station
3864                          * that is still not associated.
3865                          */
3866                         wpa_printf(MSG_DEBUG, "  * aid=1 (%s workaround)",
3867                                    (params->flags & WPA_STA_TDLS_PEER) ?
3868                                    "TDLS" : "UNASSOC_STA");
3869                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3870                                 goto fail;
3871                 }
3872                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3873                            params->listen_interval);
3874                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3875                                 params->listen_interval))
3876                         goto fail;
3877         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3878                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3879                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3880                         goto fail;
3881         } else if (FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3882                    (params->flags & WPA_STA_ASSOCIATED)) {
3883                 wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3884                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3885                            params->listen_interval);
3886                 if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid) ||
3887                     nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3888                                 params->listen_interval))
3889                         goto fail;
3890         }
3891
3892         if (params->vht_opmode_enabled) {
3893                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3894                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3895                                params->vht_opmode))
3896                         goto fail;
3897         }
3898
3899         if (params->supp_channels) {
3900                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3901                             params->supp_channels, params->supp_channels_len);
3902                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3903                             params->supp_channels_len, params->supp_channels))
3904                         goto fail;
3905         }
3906
3907         if (params->supp_oper_classes) {
3908                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3909                             params->supp_oper_classes,
3910                             params->supp_oper_classes_len);
3911                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3912                             params->supp_oper_classes_len,
3913                             params->supp_oper_classes))
3914                         goto fail;
3915         }
3916
3917         os_memset(&upd, 0, sizeof(upd));
3918         upd.set = sta_flags_nl80211(params->flags);
3919         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3920
3921         /*
3922          * If the driver doesn't support full AP client state, ignore ASSOC/AUTH
3923          * flags, as nl80211 driver moves a new station, by default, into
3924          * associated state.
3925          *
3926          * On the other hand, if the driver supports that feature and the
3927          * station is added in unauthenticated state, set the
3928          * authenticated/associated bits in the mask to prevent moving this
3929          * station to associated state before it is actually associated.
3930          *
3931          * This is irrelevant for mesh mode where the station is added to the
3932          * driver as authenticated already, and ASSOCIATED isn't part of the
3933          * nl80211 API.
3934          */
3935         if (!is_mesh_interface(drv->nlmode)) {
3936                 if (!FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags)) {
3937                         wpa_printf(MSG_DEBUG,
3938                                    "nl80211: Ignore ASSOC/AUTH flags since driver doesn't support full AP client state");
3939                         upd.mask &= ~(BIT(NL80211_STA_FLAG_ASSOCIATED) |
3940                                       BIT(NL80211_STA_FLAG_AUTHENTICATED));
3941                 } else if (!params->set &&
3942                            !(params->flags & WPA_STA_TDLS_PEER)) {
3943                         if (!(params->flags & WPA_STA_AUTHENTICATED))
3944                                 upd.mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3945                         if (!(params->flags & WPA_STA_ASSOCIATED))
3946                                 upd.mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
3947                 }
3948         }
3949
3950         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3951                    upd.set, upd.mask);
3952         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3953                 goto fail;
3954
3955 #ifdef CONFIG_MESH
3956         if (params->plink_state &&
3957             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3958                        sta_plink_state_nl80211(params->plink_state)))
3959                 goto fail;
3960 #endif /* CONFIG_MESH */
3961
3962         if (params->flags & WPA_STA_WMM) {
3963                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3964
3965                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3966                 if (!wme ||
3967                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3968                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3969                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3970                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3971                                WMM_QOSINFO_STA_SP_MASK))
3972                         goto fail;
3973                 nla_nest_end(msg, wme);
3974         }
3975
3976         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3977         msg = NULL;
3978         if (ret)
3979                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3980                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3981                            strerror(-ret));
3982         if (ret == -EEXIST)
3983                 ret = 0;
3984 fail:
3985         nlmsg_free(msg);
3986         return ret;
3987 }
3988
3989
3990 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3991 {
3992 #ifdef CONFIG_LIBNL3_ROUTE
3993         struct wpa_driver_nl80211_data *drv = bss->drv;
3994         struct rtnl_neigh *rn;
3995         struct nl_addr *nl_addr;
3996         int err;
3997
3998         rn = rtnl_neigh_alloc();
3999         if (!rn)
4000                 return;
4001
4002         rtnl_neigh_set_family(rn, AF_BRIDGE);
4003         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4004         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4005         if (!nl_addr) {
4006                 rtnl_neigh_put(rn);
4007                 return;
4008         }
4009         rtnl_neigh_set_lladdr(rn, nl_addr);
4010
4011         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4012         if (err < 0) {
4013                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4014                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4015                            bss->ifindex, nl_geterror(err));
4016         } else {
4017                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4018                            MACSTR, MAC2STR(addr));
4019         }
4020
4021         nl_addr_put(nl_addr);
4022         rtnl_neigh_put(rn);
4023 #endif /* CONFIG_LIBNL3_ROUTE */
4024 }
4025
4026
4027 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4028                                          int deauth, u16 reason_code)
4029 {
4030         struct wpa_driver_nl80211_data *drv = bss->drv;
4031         struct nl_msg *msg;
4032         int ret;
4033
4034         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
4035             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
4036             (deauth == 0 &&
4037              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4038                         WLAN_FC_STYPE_DISASSOC)) ||
4039             (deauth == 1 &&
4040              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4041                         WLAN_FC_STYPE_DEAUTH)) ||
4042             (reason_code &&
4043              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
4044                 nlmsg_free(msg);
4045                 return -ENOBUFS;
4046         }
4047
4048         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4049         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4050                    " --> %d (%s)",
4051                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4052
4053         if (drv->rtnl_sk)
4054                 rtnl_neigh_delete_fdb_entry(bss, addr);
4055
4056         if (ret == -ENOENT)
4057                 return 0;
4058         return ret;
4059 }
4060
4061
4062 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4063 {
4064         struct nl_msg *msg;
4065         struct wpa_driver_nl80211_data *drv2;
4066
4067         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4068
4069         /* stop listening for EAPOL on this interface */
4070         dl_list_for_each(drv2, &drv->global->interfaces,
4071                          struct wpa_driver_nl80211_data, list)
4072                 del_ifidx(drv2, ifidx);
4073
4074         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
4075         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4076                 return;
4077         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4078 }
4079
4080
4081 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
4082 {
4083         switch (mode) {
4084         case NL80211_IFTYPE_ADHOC:
4085                 return "ADHOC";
4086         case NL80211_IFTYPE_STATION:
4087                 return "STATION";
4088         case NL80211_IFTYPE_AP:
4089                 return "AP";
4090         case NL80211_IFTYPE_AP_VLAN:
4091                 return "AP_VLAN";
4092         case NL80211_IFTYPE_WDS:
4093                 return "WDS";
4094         case NL80211_IFTYPE_MONITOR:
4095                 return "MONITOR";
4096         case NL80211_IFTYPE_MESH_POINT:
4097                 return "MESH_POINT";
4098         case NL80211_IFTYPE_P2P_CLIENT:
4099                 return "P2P_CLIENT";
4100         case NL80211_IFTYPE_P2P_GO:
4101                 return "P2P_GO";
4102         case NL80211_IFTYPE_P2P_DEVICE:
4103                 return "P2P_DEVICE";
4104         default:
4105                 return "unknown";
4106         }
4107 }
4108
4109
4110 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4111                                      const char *ifname,
4112                                      enum nl80211_iftype iftype,
4113                                      const u8 *addr, int wds,
4114                                      int (*handler)(struct nl_msg *, void *),
4115                                      void *arg)
4116 {
4117         struct nl_msg *msg;
4118         int ifidx;
4119         int ret = -ENOBUFS;
4120
4121         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4122                    iftype, nl80211_iftype_str(iftype));
4123
4124         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
4125         if (!msg ||
4126             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
4127             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
4128                 goto fail;
4129
4130         if (iftype == NL80211_IFTYPE_MONITOR) {
4131                 struct nlattr *flags;
4132
4133                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4134                 if (!flags ||
4135                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
4136                         goto fail;
4137
4138                 nla_nest_end(msg, flags);
4139         } else if (wds) {
4140                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4141                         goto fail;
4142         }
4143
4144         /*
4145          * Tell cfg80211 that the interface belongs to the socket that created
4146          * it, and the interface should be deleted when the socket is closed.
4147          */
4148         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4149                 goto fail;
4150
4151         ret = send_and_recv_msgs(drv, msg, handler, arg);
4152         msg = NULL;
4153         if (ret) {
4154         fail:
4155                 nlmsg_free(msg);
4156                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4157                            ifname, ret, strerror(-ret));
4158                 return ret;
4159         }
4160
4161         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4162                 return 0;
4163
4164         ifidx = if_nametoindex(ifname);
4165         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4166                    ifname, ifidx);
4167
4168         if (ifidx <= 0)
4169                 return -1;
4170
4171         /*
4172          * Some virtual interfaces need to process EAPOL packets and events on
4173          * the parent interface. This is used mainly with hostapd.
4174          */
4175         if (drv->hostapd ||
4176             iftype == NL80211_IFTYPE_AP_VLAN ||
4177             iftype == NL80211_IFTYPE_WDS ||
4178             iftype == NL80211_IFTYPE_MONITOR) {
4179                 /* start listening for EAPOL on this interface */
4180                 add_ifidx(drv, ifidx);
4181         }
4182
4183         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4184             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4185                 nl80211_remove_iface(drv, ifidx);
4186                 return -1;
4187         }
4188
4189         return ifidx;
4190 }
4191
4192
4193 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4194                          const char *ifname, enum nl80211_iftype iftype,
4195                          const u8 *addr, int wds,
4196                          int (*handler)(struct nl_msg *, void *),
4197                          void *arg, int use_existing)
4198 {
4199         int ret;
4200
4201         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4202                                         arg);
4203
4204         /* if error occurred and interface exists already */
4205         if (ret == -ENFILE && if_nametoindex(ifname)) {
4206                 if (use_existing) {
4207                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4208                                    ifname);
4209                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4210                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4211                                                addr) < 0 &&
4212                             (linux_set_iface_flags(drv->global->ioctl_sock,
4213                                                    ifname, 0) < 0 ||
4214                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4215                                                 addr) < 0 ||
4216                              linux_set_iface_flags(drv->global->ioctl_sock,
4217                                                    ifname, 1) < 0))
4218                                         return -1;
4219                         return -ENFILE;
4220                 }
4221                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4222
4223                 /* Try to remove the interface that was already there. */
4224                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4225
4226                 /* Try to create the interface again */
4227                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4228                                                 wds, handler, arg);
4229         }
4230
4231         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4232                 wpa_printf(MSG_DEBUG,
4233                            "nl80211: Interface %s created for P2P - disable 11b rates",
4234                            ifname);
4235                 nl80211_disable_11b_rates(drv, ret, 1);
4236         }
4237
4238         return ret;
4239 }
4240
4241
4242 static int nl80211_setup_ap(struct i802_bss *bss)
4243 {
4244         struct wpa_driver_nl80211_data *drv = bss->drv;
4245
4246         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4247                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4248
4249         /*
4250          * Disable Probe Request reporting unless we need it in this way for
4251          * devices that include the AP SME, in the other case (unless using
4252          * monitor iface) we'll get it through the nl_mgmt socket instead.
4253          */
4254         if (!drv->device_ap_sme)
4255                 wpa_driver_nl80211_probe_req_report(bss, 0);
4256
4257         if (!drv->device_ap_sme && !drv->use_monitor)
4258                 if (nl80211_mgmt_subscribe_ap(bss))
4259                         return -1;
4260
4261         if (drv->device_ap_sme && !drv->use_monitor)
4262                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4263                         return -1;
4264
4265         if (!drv->device_ap_sme && drv->use_monitor &&
4266             nl80211_create_monitor_interface(drv) &&
4267             !drv->device_ap_sme)
4268                 return -1;
4269
4270         if (drv->device_ap_sme &&
4271             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4272                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4273                            "Probe Request frame reporting in AP mode");
4274                 /* Try to survive without this */
4275         }
4276
4277         return 0;
4278 }
4279
4280
4281 static void nl80211_teardown_ap(struct i802_bss *bss)
4282 {
4283         struct wpa_driver_nl80211_data *drv = bss->drv;
4284
4285         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4286                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4287         if (drv->device_ap_sme) {
4288                 wpa_driver_nl80211_probe_req_report(bss, 0);
4289                 if (!drv->use_monitor)
4290                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4291         } else if (drv->use_monitor)
4292                 nl80211_remove_monitor_interface(drv);
4293         else
4294                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4295
4296         bss->beacon_set = 0;
4297 }
4298
4299
4300 static int nl80211_send_eapol_data(struct i802_bss *bss,
4301                                    const u8 *addr, const u8 *data,
4302                                    size_t data_len)
4303 {
4304         struct sockaddr_ll ll;
4305         int ret;
4306
4307         if (bss->drv->eapol_tx_sock < 0) {
4308                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4309                 return -1;
4310         }
4311
4312         os_memset(&ll, 0, sizeof(ll));
4313         ll.sll_family = AF_PACKET;
4314         ll.sll_ifindex = bss->ifindex;
4315         ll.sll_protocol = htons(ETH_P_PAE);
4316         ll.sll_halen = ETH_ALEN;
4317         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4318         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4319                      (struct sockaddr *) &ll, sizeof(ll));
4320         if (ret < 0)
4321                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4322                            strerror(errno));
4323
4324         return ret;
4325 }
4326
4327
4328 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4329
4330 static int wpa_driver_nl80211_hapd_send_eapol(
4331         void *priv, const u8 *addr, const u8 *data,
4332         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4333 {
4334         struct i802_bss *bss = priv;
4335         struct wpa_driver_nl80211_data *drv = bss->drv;
4336         struct ieee80211_hdr *hdr;
4337         size_t len;
4338         u8 *pos;
4339         int res;
4340         int qos = flags & WPA_STA_WMM;
4341
4342         if (drv->device_ap_sme || !drv->use_monitor)
4343                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4344
4345         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4346                 data_len;
4347         hdr = os_zalloc(len);
4348         if (hdr == NULL) {
4349                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4350                            (unsigned long) len);
4351                 return -1;
4352         }
4353
4354         hdr->frame_control =
4355                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4356         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4357         if (encrypt)
4358                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4359         if (qos) {
4360                 hdr->frame_control |=
4361                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4362         }
4363
4364         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4365         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4366         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4367         pos = (u8 *) (hdr + 1);
4368
4369         if (qos) {
4370                 /* Set highest priority in QoS header */
4371                 pos[0] = 7;
4372                 pos[1] = 0;
4373                 pos += 2;
4374         }
4375
4376         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4377         pos += sizeof(rfc1042_header);
4378         WPA_PUT_BE16(pos, ETH_P_PAE);
4379         pos += 2;
4380         memcpy(pos, data, data_len);
4381
4382         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4383                                             0, 0, 0, 0, NULL, 0);
4384         if (res < 0) {
4385                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4386                            "failed: %d (%s)",
4387                            (unsigned long) len, errno, strerror(errno));
4388         }
4389         os_free(hdr);
4390
4391         return res;
4392 }
4393
4394
4395 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4396                                             unsigned int total_flags,
4397                                             unsigned int flags_or,
4398                                             unsigned int flags_and)
4399 {
4400         struct i802_bss *bss = priv;
4401         struct nl_msg *msg;
4402         struct nlattr *flags;
4403         struct nl80211_sta_flag_update upd;
4404
4405         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4406                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4407                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4408                    !!(total_flags & WPA_STA_AUTHORIZED));
4409
4410         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4411             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4412                 goto fail;
4413
4414         /*
4415          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4416          * can be removed eventually.
4417          */
4418         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4419         if (!flags ||
4420             ((total_flags & WPA_STA_AUTHORIZED) &&
4421              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4422             ((total_flags & WPA_STA_WMM) &&
4423              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4424             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4425              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4426             ((total_flags & WPA_STA_MFP) &&
4427              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4428             ((total_flags & WPA_STA_TDLS_PEER) &&
4429              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4430                 goto fail;
4431
4432         nla_nest_end(msg, flags);
4433
4434         os_memset(&upd, 0, sizeof(upd));
4435         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4436         upd.set = sta_flags_nl80211(flags_or);
4437         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4438                 goto fail;
4439
4440         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4441 fail:
4442         nlmsg_free(msg);
4443         return -ENOBUFS;
4444 }
4445
4446
4447 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4448                                  struct wpa_driver_associate_params *params)
4449 {
4450         enum nl80211_iftype nlmode, old_mode;
4451
4452         if (params->p2p) {
4453                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4454                            "group (GO)");
4455                 nlmode = NL80211_IFTYPE_P2P_GO;
4456         } else
4457                 nlmode = NL80211_IFTYPE_AP;
4458
4459         old_mode = drv->nlmode;
4460         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4461                 nl80211_remove_monitor_interface(drv);
4462                 return -1;
4463         }
4464
4465         if (params->freq.freq &&
4466             nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4467                 if (old_mode != nlmode)
4468                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4469                 nl80211_remove_monitor_interface(drv);
4470                 return -1;
4471         }
4472
4473         return 0;
4474 }
4475
4476
4477 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4478                               int reset_mode)
4479 {
4480         struct nl_msg *msg;
4481         int ret;
4482
4483         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4484         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4485         if (ret) {
4486                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4487                            "(%s)", ret, strerror(-ret));
4488         } else {
4489                 wpa_printf(MSG_DEBUG,
4490                            "nl80211: Leave IBSS request sent successfully");
4491         }
4492
4493         if (reset_mode &&
4494             wpa_driver_nl80211_set_mode(drv->first_bss,
4495                                         NL80211_IFTYPE_STATION)) {
4496                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4497                            "station mode");
4498         }
4499
4500         return ret;
4501 }
4502
4503
4504 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4505                                     struct wpa_driver_associate_params *params)
4506 {
4507         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4508                 return -1;
4509
4510         if (params->htcaps && params->htcaps_mask) {
4511                 int sz = sizeof(struct ieee80211_ht_capabilities);
4512                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4513                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4514                             params->htcaps_mask, sz);
4515                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4516                             params->htcaps) ||
4517                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4518                             params->htcaps_mask))
4519                         return -1;
4520         }
4521
4522 #ifdef CONFIG_VHT_OVERRIDES
4523         if (params->disable_vht) {
4524                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4525                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4526                         return -1;
4527         }
4528
4529         if (params->vhtcaps && params->vhtcaps_mask) {
4530                 int sz = sizeof(struct ieee80211_vht_capabilities);
4531                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4532                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4533                             params->vhtcaps_mask, sz);
4534                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4535                             params->vhtcaps) ||
4536                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4537                             params->vhtcaps_mask))
4538                         return -1;
4539         }
4540 #endif /* CONFIG_VHT_OVERRIDES */
4541
4542         return 0;
4543 }
4544
4545
4546 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4547                                    struct wpa_driver_associate_params *params)
4548 {
4549         struct nl_msg *msg;
4550         int ret = -1;
4551         int count = 0;
4552
4553         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4554
4555         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4556                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4557                            "IBSS mode");
4558                 return -1;
4559         }
4560
4561 retry:
4562         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4563             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4564                 goto fail;
4565
4566         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4567                           params->ssid, params->ssid_len);
4568         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4569                 goto fail;
4570         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4571         drv->ssid_len = params->ssid_len;
4572
4573         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4574             nl80211_put_beacon_int(msg, params->beacon_int))
4575                 goto fail;
4576
4577         ret = nl80211_set_conn_keys(params, msg);
4578         if (ret)
4579                 goto fail;
4580
4581         if (params->bssid && params->fixed_bssid) {
4582                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4583                            MAC2STR(params->bssid));
4584                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4585                         goto fail;
4586         }
4587
4588         if (params->fixed_freq) {
4589                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4590                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4591                         goto fail;
4592         }
4593
4594         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4595             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4596             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4597             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4598                 wpa_printf(MSG_DEBUG, "  * control port");
4599                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4600                         goto fail;
4601         }
4602
4603         if (params->wpa_ie) {
4604                 wpa_hexdump(MSG_DEBUG,
4605                             "  * Extra IEs for Beacon/Probe Response frames",
4606                             params->wpa_ie, params->wpa_ie_len);
4607                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4608                             params->wpa_ie))
4609                         goto fail;
4610         }
4611
4612         ret = nl80211_ht_vht_overrides(msg, params);
4613         if (ret < 0)
4614                 goto fail;
4615
4616         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4617         msg = NULL;
4618         if (ret) {
4619                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4620                            ret, strerror(-ret));
4621                 count++;
4622                 if (ret == -EALREADY && count == 1) {
4623                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4624                                    "forced leave");
4625                         nl80211_leave_ibss(drv, 0);
4626                         nlmsg_free(msg);
4627                         goto retry;
4628                 }
4629         } else {
4630                 wpa_printf(MSG_DEBUG,
4631                            "nl80211: Join IBSS request sent successfully");
4632         }
4633
4634 fail:
4635         nlmsg_free(msg);
4636         return ret;
4637 }
4638
4639
4640 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4641                                   struct wpa_driver_associate_params *params,
4642                                   struct nl_msg *msg)
4643 {
4644         if (params->bssid) {
4645                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4646                            MAC2STR(params->bssid));
4647                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4648                         return -1;
4649         }
4650
4651         if (params->bssid_hint) {
4652                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4653                            MAC2STR(params->bssid_hint));
4654                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4655                             params->bssid_hint))
4656                         return -1;
4657         }
4658
4659         if (params->freq.freq) {
4660                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4661                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4662                                 params->freq.freq))
4663                         return -1;
4664                 drv->assoc_freq = params->freq.freq;
4665         } else
4666                 drv->assoc_freq = 0;
4667
4668         if (params->freq_hint) {
4669                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4670                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4671                                 params->freq_hint))
4672                         return -1;
4673         }
4674
4675         if (params->bg_scan_period >= 0) {
4676                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4677                            params->bg_scan_period);
4678                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4679                                 params->bg_scan_period))
4680                         return -1;
4681         }
4682
4683         if (params->ssid) {
4684                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4685                                   params->ssid, params->ssid_len);
4686                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4687                             params->ssid))
4688                         return -1;
4689                 if (params->ssid_len > sizeof(drv->ssid))
4690                         return -1;
4691                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4692                 drv->ssid_len = params->ssid_len;
4693         }
4694
4695         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4696         if (params->wpa_ie &&
4697             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4698                 return -1;
4699
4700         if (params->wpa_proto) {
4701                 enum nl80211_wpa_versions ver = 0;
4702
4703                 if (params->wpa_proto & WPA_PROTO_WPA)
4704                         ver |= NL80211_WPA_VERSION_1;
4705                 if (params->wpa_proto & WPA_PROTO_RSN)
4706                         ver |= NL80211_WPA_VERSION_2;
4707
4708                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4709                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4710                         return -1;
4711         }
4712
4713         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4714                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4715                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4716                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4717                                 cipher))
4718                         return -1;
4719         }
4720
4721         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4722             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4723                 /*
4724                  * This is likely to work even though many drivers do not
4725                  * advertise support for operations without GTK.
4726                  */
4727                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4728         } else if (params->group_suite != WPA_CIPHER_NONE) {
4729                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4730                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4731                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4732                         return -1;
4733         }
4734
4735         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4736             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4737             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4738             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4739             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4740             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4741             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4742             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4743             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4744             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4745                 int mgmt = WLAN_AKM_SUITE_PSK;
4746
4747                 switch (params->key_mgmt_suite) {
4748                 case WPA_KEY_MGMT_CCKM:
4749                         mgmt = WLAN_AKM_SUITE_CCKM;
4750                         break;
4751                 case WPA_KEY_MGMT_IEEE8021X:
4752                         mgmt = WLAN_AKM_SUITE_8021X;
4753                         break;
4754                 case WPA_KEY_MGMT_FT_IEEE8021X:
4755                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4756                         break;
4757                 case WPA_KEY_MGMT_FT_PSK:
4758                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4759                         break;
4760                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4761                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4762                         break;
4763                 case WPA_KEY_MGMT_PSK_SHA256:
4764                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4765                         break;
4766                 case WPA_KEY_MGMT_OSEN:
4767                         mgmt = WLAN_AKM_SUITE_OSEN;
4768                         break;
4769                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4770                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4771                         break;
4772                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4773                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4774                         break;
4775                 case WPA_KEY_MGMT_PSK:
4776                 default:
4777                         mgmt = WLAN_AKM_SUITE_PSK;
4778                         break;
4779                 }
4780                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4781                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4782                         return -1;
4783         }
4784
4785         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4786                 return -1;
4787
4788         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4789             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4790                 return -1;
4791
4792         if (params->rrm_used) {
4793                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4794                 if (!(drv_rrm_flags &
4795                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4796                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4797                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4798                         return -1;
4799         }
4800
4801         if (nl80211_ht_vht_overrides(msg, params) < 0)
4802                 return -1;
4803
4804         if (params->p2p)
4805                 wpa_printf(MSG_DEBUG, "  * P2P group");
4806
4807         if (params->pbss) {
4808                 wpa_printf(MSG_DEBUG, "  * PBSS");
4809                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
4810                         return -1;
4811         }
4812
4813         return 0;
4814 }
4815
4816
4817 static int wpa_driver_nl80211_try_connect(
4818         struct wpa_driver_nl80211_data *drv,
4819         struct wpa_driver_associate_params *params)
4820 {
4821         struct nl_msg *msg;
4822         enum nl80211_auth_type type;
4823         int ret;
4824         int algs;
4825
4826 #ifdef CONFIG_DRIVER_NL80211_QCA
4827         if (params->req_key_mgmt_offload && params->psk &&
4828             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4829              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4830              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4831                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4832                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4833                 if (ret)
4834                         return ret;
4835         }
4836 #endif /* CONFIG_DRIVER_NL80211_QCA */
4837
4838         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4839         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4840         if (!msg)
4841                 return -1;
4842
4843         ret = nl80211_connect_common(drv, params, msg);
4844         if (ret)
4845                 goto fail;
4846
4847         algs = 0;
4848         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4849                 algs++;
4850         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4851                 algs++;
4852         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4853                 algs++;
4854         if (algs > 1) {
4855                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4856                            "selection");
4857                 goto skip_auth_type;
4858         }
4859
4860         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4861                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4862         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4863                 type = NL80211_AUTHTYPE_SHARED_KEY;
4864         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4865                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4866         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4867                 type = NL80211_AUTHTYPE_FT;
4868         else
4869                 goto fail;
4870
4871         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4872         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4873                 goto fail;
4874
4875 skip_auth_type:
4876         ret = nl80211_set_conn_keys(params, msg);
4877         if (ret)
4878                 goto fail;
4879
4880         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4881         msg = NULL;
4882         if (ret) {
4883                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4884                            "(%s)", ret, strerror(-ret));
4885         } else {
4886                 wpa_printf(MSG_DEBUG,
4887                            "nl80211: Connect request send successfully");
4888         }
4889
4890 fail:
4891         nlmsg_free(msg);
4892         return ret;
4893
4894 }
4895
4896
4897 static int wpa_driver_nl80211_connect(
4898         struct wpa_driver_nl80211_data *drv,
4899         struct wpa_driver_associate_params *params)
4900 {
4901         int ret;
4902
4903         /* Store the connection attempted bssid for future use */
4904         if (params->bssid)
4905                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4906         else
4907                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4908
4909         ret = wpa_driver_nl80211_try_connect(drv, params);
4910         if (ret == -EALREADY) {
4911                 /*
4912                  * cfg80211 does not currently accept new connections if
4913                  * we are already connected. As a workaround, force
4914                  * disconnection and try again.
4915                  */
4916                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4917                            "disconnecting before reassociation "
4918                            "attempt");
4919                 if (wpa_driver_nl80211_disconnect(
4920                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4921                         return -1;
4922                 ret = wpa_driver_nl80211_try_connect(drv, params);
4923         }
4924         return ret;
4925 }
4926
4927
4928 static int wpa_driver_nl80211_associate(
4929         void *priv, struct wpa_driver_associate_params *params)
4930 {
4931         struct i802_bss *bss = priv;
4932         struct wpa_driver_nl80211_data *drv = bss->drv;
4933         int ret = -1;
4934         struct nl_msg *msg;
4935
4936         nl80211_unmask_11b_rates(bss);
4937
4938         if (params->mode == IEEE80211_MODE_AP)
4939                 return wpa_driver_nl80211_ap(drv, params);
4940
4941         if (params->mode == IEEE80211_MODE_IBSS)
4942                 return wpa_driver_nl80211_ibss(drv, params);
4943
4944         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4945                 enum nl80211_iftype nlmode = params->p2p ?
4946                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4947
4948                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4949                         return -1;
4950                 return wpa_driver_nl80211_connect(drv, params);
4951         }
4952
4953         nl80211_mark_disconnected(drv);
4954
4955         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4956                    drv->ifindex);
4957         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4958         if (!msg)
4959                 return -1;
4960
4961         ret = nl80211_connect_common(drv, params, msg);
4962         if (ret)
4963                 goto fail;
4964
4965         if (params->prev_bssid) {
4966                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4967                            MAC2STR(params->prev_bssid));
4968                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4969                             params->prev_bssid))
4970                         goto fail;
4971         }
4972
4973         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4974         msg = NULL;
4975         if (ret) {
4976                 wpa_dbg(drv->ctx, MSG_DEBUG,
4977                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4978                         ret, strerror(-ret));
4979                 nl80211_dump_scan(drv);
4980         } else {
4981                 wpa_printf(MSG_DEBUG,
4982                            "nl80211: Association request send successfully");
4983         }
4984
4985 fail:
4986         nlmsg_free(msg);
4987         return ret;
4988 }
4989
4990
4991 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4992                             int ifindex, enum nl80211_iftype mode)
4993 {
4994         struct nl_msg *msg;
4995         int ret = -ENOBUFS;
4996
4997         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4998                    ifindex, mode, nl80211_iftype_str(mode));
4999
5000         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
5001         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
5002                 goto fail;
5003
5004         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5005         msg = NULL;
5006         if (!ret)
5007                 return 0;
5008 fail:
5009         nlmsg_free(msg);
5010         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5011                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5012         return ret;
5013 }
5014
5015
5016 static int wpa_driver_nl80211_set_mode_impl(
5017                 struct i802_bss *bss,
5018                 enum nl80211_iftype nlmode,
5019                 struct hostapd_freq_params *desired_freq_params)
5020 {
5021         struct wpa_driver_nl80211_data *drv = bss->drv;
5022         int ret = -1;
5023         int i;
5024         int was_ap = is_ap_interface(drv->nlmode);
5025         int res;
5026         int mode_switch_res;
5027
5028         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5029         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5030                 mode_switch_res = 0;
5031
5032         if (mode_switch_res == 0) {
5033                 drv->nlmode = nlmode;
5034                 ret = 0;
5035                 goto done;
5036         }
5037
5038         if (mode_switch_res == -ENODEV)
5039                 return -1;
5040
5041         if (nlmode == drv->nlmode) {
5042                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5043                            "requested mode - ignore error");
5044                 ret = 0;
5045                 goto done; /* Already in the requested mode */
5046         }
5047
5048         /* mac80211 doesn't allow mode changes while the device is up, so
5049          * take the device down, try to set the mode again, and bring the
5050          * device back up.
5051          */
5052         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5053                    "interface down");
5054         for (i = 0; i < 10; i++) {
5055                 res = i802_set_iface_flags(bss, 0);
5056                 if (res == -EACCES || res == -ENODEV)
5057                         break;
5058                 if (res != 0) {
5059                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5060                                    "interface down");
5061                         os_sleep(0, 100000);
5062                         continue;
5063                 }
5064
5065                 /*
5066                  * Setting the mode will fail for some drivers if the phy is
5067                  * on a frequency that the mode is disallowed in.
5068                  */
5069                 if (desired_freq_params) {
5070                         res = nl80211_set_channel(bss, desired_freq_params, 0);
5071                         if (res) {
5072                                 wpa_printf(MSG_DEBUG,
5073                                            "nl80211: Failed to set frequency on interface");
5074                         }
5075                 }
5076
5077                 /* Try to set the mode again while the interface is down */
5078                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5079                 if (mode_switch_res == -EBUSY) {
5080                         wpa_printf(MSG_DEBUG,
5081                                    "nl80211: Delaying mode set while interface going down");
5082                         os_sleep(0, 100000);
5083                         continue;
5084                 }
5085                 ret = mode_switch_res;
5086                 break;
5087         }
5088
5089         if (!ret) {
5090                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5091                            "interface is down");
5092                 drv->nlmode = nlmode;
5093                 drv->ignore_if_down_event = 1;
5094         }
5095
5096         /* Bring the interface back up */
5097         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5098         if (res != 0) {
5099                 wpa_printf(MSG_DEBUG,
5100                            "nl80211: Failed to set interface up after switching mode");
5101                 ret = -1;
5102         }
5103
5104 done:
5105         if (ret) {
5106                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5107                            "from %d failed", nlmode, drv->nlmode);
5108                 return ret;
5109         }
5110
5111         if (is_p2p_net_interface(nlmode)) {
5112                 wpa_printf(MSG_DEBUG,
5113                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
5114                            bss->ifname);
5115                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5116         } else if (drv->disabled_11b_rates) {
5117                 wpa_printf(MSG_DEBUG,
5118                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
5119                            bss->ifname);
5120                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5121         }
5122
5123         if (is_ap_interface(nlmode)) {
5124                 nl80211_mgmt_unsubscribe(bss, "start AP");
5125                 /* Setup additional AP mode functionality if needed */
5126                 if (nl80211_setup_ap(bss))
5127                         return -1;
5128         } else if (was_ap) {
5129                 /* Remove additional AP mode functionality */
5130                 nl80211_teardown_ap(bss);
5131         } else {
5132                 nl80211_mgmt_unsubscribe(bss, "mode change");
5133         }
5134
5135         if (is_mesh_interface(nlmode) &&
5136             nl80211_mgmt_subscribe_mesh(bss))
5137                 return -1;
5138
5139         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5140             !is_mesh_interface(nlmode) &&
5141             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5142                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5143                            "frame processing - ignore for now");
5144
5145         return 0;
5146 }
5147
5148
5149 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5150                                 enum nl80211_iftype nlmode)
5151 {
5152         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5153 }
5154
5155
5156 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5157                                             struct hostapd_freq_params *freq)
5158 {
5159         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5160                                                 freq);
5161 }
5162
5163
5164 static int wpa_driver_nl80211_get_capa(void *priv,
5165                                        struct wpa_driver_capa *capa)
5166 {
5167         struct i802_bss *bss = priv;
5168         struct wpa_driver_nl80211_data *drv = bss->drv;
5169
5170         if (!drv->has_capability)
5171                 return -1;
5172         os_memcpy(capa, &drv->capa, sizeof(*capa));
5173         if (drv->extended_capa && drv->extended_capa_mask) {
5174                 capa->extended_capa = drv->extended_capa;
5175                 capa->extended_capa_mask = drv->extended_capa_mask;
5176                 capa->extended_capa_len = drv->extended_capa_len;
5177         }
5178
5179         return 0;
5180 }
5181
5182
5183 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5184 {
5185         struct i802_bss *bss = priv;
5186         struct wpa_driver_nl80211_data *drv = bss->drv;
5187
5188         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5189                    bss->ifname, drv->operstate, state,
5190                    state ? "UP" : "DORMANT");
5191         drv->operstate = state;
5192         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5193                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5194 }
5195
5196
5197 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5198 {
5199         struct i802_bss *bss = priv;
5200         struct wpa_driver_nl80211_data *drv = bss->drv;
5201         struct nl_msg *msg;
5202         struct nl80211_sta_flag_update upd;
5203         int ret;
5204
5205         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5206                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5207                 return 0;
5208         }
5209
5210         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5211                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5212
5213         os_memset(&upd, 0, sizeof(upd));
5214         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5215         if (authorized)
5216                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5217
5218         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5219             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5220             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5221                 nlmsg_free(msg);
5222                 return -ENOBUFS;
5223         }
5224
5225         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5226         if (!ret)
5227                 return 0;
5228         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5229                    ret, strerror(-ret));
5230         return ret;
5231 }
5232
5233
5234 /* Set kernel driver on given frequency (MHz) */
5235 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5236 {
5237         struct i802_bss *bss = priv;
5238         return nl80211_set_channel(bss, freq, 0);
5239 }
5240
5241
5242 static inline int min_int(int a, int b)
5243 {
5244         if (a < b)
5245                 return a;
5246         return b;
5247 }
5248
5249
5250 static int get_key_handler(struct nl_msg *msg, void *arg)
5251 {
5252         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5253         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5254
5255         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5256                   genlmsg_attrlen(gnlh, 0), NULL);
5257
5258         /*
5259          * TODO: validate the key index and mac address!
5260          * Otherwise, there's a race condition as soon as
5261          * the kernel starts sending key notifications.
5262          */
5263
5264         if (tb[NL80211_ATTR_KEY_SEQ])
5265                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5266                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5267         return NL_SKIP;
5268 }
5269
5270
5271 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5272                            int idx, u8 *seq)
5273 {
5274         struct i802_bss *bss = priv;
5275         struct wpa_driver_nl80211_data *drv = bss->drv;
5276         struct nl_msg *msg;
5277
5278         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5279                                   NL80211_CMD_GET_KEY);
5280         if (!msg ||
5281             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5282             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5283                 nlmsg_free(msg);
5284                 return -ENOBUFS;
5285         }
5286
5287         memset(seq, 0, 6);
5288
5289         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5290 }
5291
5292
5293 static int i802_set_rts(void *priv, int rts)
5294 {
5295         struct i802_bss *bss = priv;
5296         struct wpa_driver_nl80211_data *drv = bss->drv;
5297         struct nl_msg *msg;
5298         int ret;
5299         u32 val;
5300
5301         if (rts >= 2347)
5302                 val = (u32) -1;
5303         else
5304                 val = rts;
5305
5306         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5307             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5308                 nlmsg_free(msg);
5309                 return -ENOBUFS;
5310         }
5311
5312         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5313         if (!ret)
5314                 return 0;
5315         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5316                    "%d (%s)", rts, ret, strerror(-ret));
5317         return ret;
5318 }
5319
5320
5321 static int i802_set_frag(void *priv, int frag)
5322 {
5323         struct i802_bss *bss = priv;
5324         struct wpa_driver_nl80211_data *drv = bss->drv;
5325         struct nl_msg *msg;
5326         int ret;
5327         u32 val;
5328
5329         if (frag >= 2346)
5330                 val = (u32) -1;
5331         else
5332                 val = frag;
5333
5334         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5335             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5336                 nlmsg_free(msg);
5337                 return -ENOBUFS;
5338         }
5339
5340         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5341         if (!ret)
5342                 return 0;
5343         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5344                    "%d: %d (%s)", frag, ret, strerror(-ret));
5345         return ret;
5346 }
5347
5348
5349 static int i802_flush(void *priv)
5350 {
5351         struct i802_bss *bss = priv;
5352         struct nl_msg *msg;
5353         int res;
5354
5355         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5356                    bss->ifname);
5357
5358         /*
5359          * XXX: FIX! this needs to flush all VLANs too
5360          */
5361         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5362         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5363         if (res) {
5364                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5365                            "(%s)", res, strerror(-res));
5366         }
5367         return res;
5368 }
5369
5370
5371 static int get_sta_handler(struct nl_msg *msg, void *arg)
5372 {
5373         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5374         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5375         struct hostap_sta_driver_data *data = arg;
5376         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5377         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5378                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5379                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5380                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5381                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5382                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5383                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5384         };
5385
5386         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5387                   genlmsg_attrlen(gnlh, 0), NULL);
5388
5389         /*
5390          * TODO: validate the interface and mac address!
5391          * Otherwise, there's a race condition as soon as
5392          * the kernel starts sending station notifications.
5393          */
5394
5395         if (!tb[NL80211_ATTR_STA_INFO]) {
5396                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5397                 return NL_SKIP;
5398         }
5399         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5400                              tb[NL80211_ATTR_STA_INFO],
5401                              stats_policy)) {
5402                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5403                 return NL_SKIP;
5404         }
5405
5406         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5407                 data->inactive_msec =
5408                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5409         if (stats[NL80211_STA_INFO_RX_BYTES])
5410                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5411         if (stats[NL80211_STA_INFO_TX_BYTES])
5412                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5413         if (stats[NL80211_STA_INFO_RX_PACKETS])
5414                 data->rx_packets =
5415                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5416         if (stats[NL80211_STA_INFO_TX_PACKETS])
5417                 data->tx_packets =
5418                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5419         if (stats[NL80211_STA_INFO_TX_FAILED])
5420                 data->tx_retry_failed =
5421                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5422
5423         return NL_SKIP;
5424 }
5425
5426 static int i802_read_sta_data(struct i802_bss *bss,
5427                               struct hostap_sta_driver_data *data,
5428                               const u8 *addr)
5429 {
5430         struct nl_msg *msg;
5431
5432         os_memset(data, 0, sizeof(*data));
5433
5434         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5435             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5436                 nlmsg_free(msg);
5437                 return -ENOBUFS;
5438         }
5439
5440         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5441 }
5442
5443
5444 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5445                                     int cw_min, int cw_max, int burst_time)
5446 {
5447         struct i802_bss *bss = priv;
5448         struct wpa_driver_nl80211_data *drv = bss->drv;
5449         struct nl_msg *msg;
5450         struct nlattr *txq, *params;
5451
5452         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5453         if (!msg)
5454                 return -1;
5455
5456         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5457         if (!txq)
5458                 goto fail;
5459
5460         /* We are only sending parameters for a single TXQ at a time */
5461         params = nla_nest_start(msg, 1);
5462         if (!params)
5463                 goto fail;
5464
5465         switch (queue) {
5466         case 0:
5467                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5468                         goto fail;
5469                 break;
5470         case 1:
5471                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5472                         goto fail;
5473                 break;
5474         case 2:
5475                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5476                         goto fail;
5477                 break;
5478         case 3:
5479                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5480                         goto fail;
5481                 break;
5482         }
5483         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5484          * 32 usec, so need to convert the value here. */
5485         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5486                         (burst_time * 100 + 16) / 32) ||
5487             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5488             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5489             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5490                 goto fail;
5491
5492         nla_nest_end(msg, params);
5493
5494         nla_nest_end(msg, txq);
5495
5496         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5497                 return 0;
5498         msg = NULL;
5499 fail:
5500         nlmsg_free(msg);
5501         return -1;
5502 }
5503
5504
5505 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5506                              const char *ifname, int vlan_id)
5507 {
5508         struct wpa_driver_nl80211_data *drv = bss->drv;
5509         struct nl_msg *msg;
5510         int ret;
5511
5512         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5513                    ", ifname=%s[%d], vlan_id=%d)",
5514                    bss->ifname, if_nametoindex(bss->ifname),
5515                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5516         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5517             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5518             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5519                 nlmsg_free(msg);
5520                 return -ENOBUFS;
5521         }
5522
5523         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5524         if (ret < 0) {
5525                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5526                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5527                            MAC2STR(addr), ifname, vlan_id, ret,
5528                            strerror(-ret));
5529         }
5530         return ret;
5531 }
5532
5533
5534 static int i802_get_inact_sec(void *priv, const u8 *addr)
5535 {
5536         struct hostap_sta_driver_data data;
5537         int ret;
5538
5539         data.inactive_msec = (unsigned long) -1;
5540         ret = i802_read_sta_data(priv, &data, addr);
5541         if (ret == -ENOENT)
5542                 return -ENOENT;
5543         if (ret || data.inactive_msec == (unsigned long) -1)
5544                 return -1;
5545         return data.inactive_msec / 1000;
5546 }
5547
5548
5549 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5550 {
5551 #if 0
5552         /* TODO */
5553 #endif
5554         return 0;
5555 }
5556
5557
5558 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5559                            int reason)
5560 {
5561         struct i802_bss *bss = priv;
5562         struct wpa_driver_nl80211_data *drv = bss->drv;
5563         struct ieee80211_mgmt mgmt;
5564
5565         if (is_mesh_interface(drv->nlmode))
5566                 return -1;
5567
5568         if (drv->device_ap_sme)
5569                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5570
5571         memset(&mgmt, 0, sizeof(mgmt));
5572         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5573                                           WLAN_FC_STYPE_DEAUTH);
5574         memcpy(mgmt.da, addr, ETH_ALEN);
5575         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5576         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5577         mgmt.u.deauth.reason_code = host_to_le16(reason);
5578         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5579                                             IEEE80211_HDRLEN +
5580                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5581                                             0, NULL, 0);
5582 }
5583
5584
5585 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5586                              int reason)
5587 {
5588         struct i802_bss *bss = priv;
5589         struct wpa_driver_nl80211_data *drv = bss->drv;
5590         struct ieee80211_mgmt mgmt;
5591
5592         if (is_mesh_interface(drv->nlmode))
5593                 return -1;
5594
5595         if (drv->device_ap_sme)
5596                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5597
5598         memset(&mgmt, 0, sizeof(mgmt));
5599         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5600                                           WLAN_FC_STYPE_DISASSOC);
5601         memcpy(mgmt.da, addr, ETH_ALEN);
5602         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5603         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5604         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5605         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5606                                             IEEE80211_HDRLEN +
5607                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5608                                             0, NULL, 0);
5609 }
5610
5611
5612 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5613 {
5614         char buf[200], *pos, *end;
5615         int i, res;
5616
5617         pos = buf;
5618         end = pos + sizeof(buf);
5619
5620         for (i = 0; i < drv->num_if_indices; i++) {
5621                 if (!drv->if_indices[i])
5622                         continue;
5623                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5624                 if (os_snprintf_error(end - pos, res))
5625                         break;
5626                 pos += res;
5627         }
5628         *pos = '\0';
5629
5630         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5631                    drv->num_if_indices, buf);
5632 }
5633
5634
5635 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5636 {
5637         int i;
5638         int *old;
5639
5640         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5641                    ifidx);
5642         if (have_ifidx(drv, ifidx)) {
5643                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5644                            ifidx);
5645                 return;
5646         }
5647         for (i = 0; i < drv->num_if_indices; i++) {
5648                 if (drv->if_indices[i] == 0) {
5649                         drv->if_indices[i] = ifidx;
5650                         dump_ifidx(drv);
5651                         return;
5652                 }
5653         }
5654
5655         if (drv->if_indices != drv->default_if_indices)
5656                 old = drv->if_indices;
5657         else
5658                 old = NULL;
5659
5660         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5661                                            sizeof(int));
5662         if (!drv->if_indices) {
5663                 if (!old)
5664                         drv->if_indices = drv->default_if_indices;
5665                 else
5666                         drv->if_indices = old;
5667                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5668                            "interfaces");
5669                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5670                 return;
5671         } else if (!old)
5672                 os_memcpy(drv->if_indices, drv->default_if_indices,
5673                           sizeof(drv->default_if_indices));
5674         drv->if_indices[drv->num_if_indices] = ifidx;
5675         drv->num_if_indices++;
5676         dump_ifidx(drv);
5677 }
5678
5679
5680 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5681 {
5682         int i;
5683
5684         for (i = 0; i < drv->num_if_indices; i++) {
5685                 if (drv->if_indices[i] == ifidx) {
5686                         drv->if_indices[i] = 0;
5687                         break;
5688                 }
5689         }
5690         dump_ifidx(drv);
5691 }
5692
5693
5694 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5695 {
5696         int i;
5697
5698         for (i = 0; i < drv->num_if_indices; i++)
5699                 if (drv->if_indices[i] == ifidx)
5700                         return 1;
5701
5702         return 0;
5703 }
5704
5705
5706 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5707                             const char *bridge_ifname, char *ifname_wds)
5708 {
5709         struct i802_bss *bss = priv;
5710         struct wpa_driver_nl80211_data *drv = bss->drv;
5711         char name[IFNAMSIZ + 1];
5712
5713         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5714         if (ifname_wds)
5715                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5716
5717         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5718                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5719         if (val) {
5720                 if (!if_nametoindex(name)) {
5721                         if (nl80211_create_iface(drv, name,
5722                                                  NL80211_IFTYPE_AP_VLAN,
5723                                                  bss->addr, 1, NULL, NULL, 0) <
5724                             0)
5725                                 return -1;
5726                         if (bridge_ifname &&
5727                             linux_br_add_if(drv->global->ioctl_sock,
5728                                             bridge_ifname, name) < 0)
5729                                 return -1;
5730                 }
5731                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5732                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5733                                    "interface %s up", name);
5734                 }
5735                 return i802_set_sta_vlan(priv, addr, name, 0);
5736         } else {
5737                 if (bridge_ifname)
5738                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5739                                         name);
5740
5741                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5742                 nl80211_remove_iface(drv, if_nametoindex(name));
5743                 return 0;
5744         }
5745 }
5746
5747
5748 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5749 {
5750         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5751         struct sockaddr_ll lladdr;
5752         unsigned char buf[3000];
5753         int len;
5754         socklen_t fromlen = sizeof(lladdr);
5755
5756         len = recvfrom(sock, buf, sizeof(buf), 0,
5757                        (struct sockaddr *)&lladdr, &fromlen);
5758         if (len < 0) {
5759                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5760                            strerror(errno));
5761                 return;
5762         }
5763
5764         if (have_ifidx(drv, lladdr.sll_ifindex))
5765                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5766 }
5767
5768
5769 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5770                              struct i802_bss *bss,
5771                              const char *brname, const char *ifname)
5772 {
5773         int br_ifindex;
5774         char in_br[IFNAMSIZ];
5775
5776         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5777         br_ifindex = if_nametoindex(brname);
5778         if (br_ifindex == 0) {
5779                 /*
5780                  * Bridge was configured, but the bridge device does
5781                  * not exist. Try to add it now.
5782                  */
5783                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5784                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5785                                    "bridge interface %s: %s",
5786                                    brname, strerror(errno));
5787                         return -1;
5788                 }
5789                 bss->added_bridge = 1;
5790                 br_ifindex = if_nametoindex(brname);
5791                 add_ifidx(drv, br_ifindex);
5792         }
5793         bss->br_ifindex = br_ifindex;
5794
5795         if (linux_br_get(in_br, ifname) == 0) {
5796                 if (os_strcmp(in_br, brname) == 0)
5797                         return 0; /* already in the bridge */
5798
5799                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5800                            "bridge %s", ifname, in_br);
5801                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5802                     0) {
5803                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5804                                    "remove interface %s from bridge "
5805                                    "%s: %s",
5806                                    ifname, brname, strerror(errno));
5807                         return -1;
5808                 }
5809         }
5810
5811         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5812                    ifname, brname);
5813         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5814                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5815                            "into bridge %s: %s",
5816                            ifname, brname, strerror(errno));
5817                 return -1;
5818         }
5819         bss->added_if_into_bridge = 1;
5820
5821         return 0;
5822 }
5823
5824
5825 static void *i802_init(struct hostapd_data *hapd,
5826                        struct wpa_init_params *params)
5827 {
5828         struct wpa_driver_nl80211_data *drv;
5829         struct i802_bss *bss;
5830         size_t i;
5831         char master_ifname[IFNAMSIZ];
5832         int ifindex, br_ifindex = 0;
5833         int br_added = 0;
5834
5835         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5836                                           params->global_priv, 1,
5837                                           params->bssid, params->driver_params);
5838         if (bss == NULL)
5839                 return NULL;
5840
5841         drv = bss->drv;
5842
5843         if (linux_br_get(master_ifname, params->ifname) == 0) {
5844                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5845                            params->ifname, master_ifname);
5846                 br_ifindex = if_nametoindex(master_ifname);
5847                 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
5848         } else if ((params->num_bridge == 0 || !params->bridge[0]) &&
5849                    linux_master_get(master_ifname, params->ifname) == 0) {
5850                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in master %s",
5851                         params->ifname, master_ifname);
5852                 /* start listening for EAPOL on the master interface */
5853                 add_ifidx(drv, if_nametoindex(master_ifname));
5854         } else {
5855                 master_ifname[0] = '\0';
5856         }
5857
5858         bss->br_ifindex = br_ifindex;
5859
5860         for (i = 0; i < params->num_bridge; i++) {
5861                 if (params->bridge[i]) {
5862                         ifindex = if_nametoindex(params->bridge[i]);
5863                         if (ifindex)
5864                                 add_ifidx(drv, ifindex);
5865                         if (ifindex == br_ifindex)
5866                                 br_added = 1;
5867                 }
5868         }
5869
5870         /* start listening for EAPOL on the default AP interface */
5871         add_ifidx(drv, drv->ifindex);
5872
5873         if (params->num_bridge && params->bridge[0]) {
5874                 if (i802_check_bridge(drv, bss, params->bridge[0],
5875                                       params->ifname) < 0)
5876                         goto failed;
5877                 if (os_strcmp(params->bridge[0], master_ifname) != 0)
5878                         br_added = 1;
5879         }
5880
5881         if (!br_added && br_ifindex &&
5882             (params->num_bridge == 0 || !params->bridge[0]))
5883                 add_ifidx(drv, br_ifindex);
5884
5885 #ifdef CONFIG_LIBNL3_ROUTE
5886         if (bss->added_if_into_bridge) {
5887                 drv->rtnl_sk = nl_socket_alloc();
5888                 if (drv->rtnl_sk == NULL) {
5889                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5890                         goto failed;
5891                 }
5892
5893                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5894                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5895                                    strerror(errno));
5896                         goto failed;
5897                 }
5898         }
5899 #endif /* CONFIG_LIBNL3_ROUTE */
5900
5901         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5902         if (drv->eapol_sock < 0) {
5903                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5904                            strerror(errno));
5905                 goto failed;
5906         }
5907
5908         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5909         {
5910                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5911                 goto failed;
5912         }
5913
5914         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5915                                params->own_addr))
5916                 goto failed;
5917         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5918
5919         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5920
5921         return bss;
5922
5923 failed:
5924         wpa_driver_nl80211_deinit(bss);
5925         return NULL;
5926 }
5927
5928
5929 static void i802_deinit(void *priv)
5930 {
5931         struct i802_bss *bss = priv;
5932         wpa_driver_nl80211_deinit(bss);
5933 }
5934
5935
5936 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5937         enum wpa_driver_if_type type)
5938 {
5939         switch (type) {
5940         case WPA_IF_STATION:
5941                 return NL80211_IFTYPE_STATION;
5942         case WPA_IF_P2P_CLIENT:
5943         case WPA_IF_P2P_GROUP:
5944                 return NL80211_IFTYPE_P2P_CLIENT;
5945         case WPA_IF_AP_VLAN:
5946                 return NL80211_IFTYPE_AP_VLAN;
5947         case WPA_IF_AP_BSS:
5948                 return NL80211_IFTYPE_AP;
5949         case WPA_IF_P2P_GO:
5950                 return NL80211_IFTYPE_P2P_GO;
5951         case WPA_IF_P2P_DEVICE:
5952                 return NL80211_IFTYPE_P2P_DEVICE;
5953         case WPA_IF_MESH:
5954                 return NL80211_IFTYPE_MESH_POINT;
5955         default:
5956                 return -1;
5957         }
5958 }
5959
5960
5961 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5962 {
5963         struct wpa_driver_nl80211_data *drv;
5964         dl_list_for_each(drv, &global->interfaces,
5965                          struct wpa_driver_nl80211_data, list) {
5966                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5967                         return 1;
5968         }
5969         return 0;
5970 }
5971
5972
5973 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5974 {
5975         unsigned int idx;
5976
5977         if (!drv->global)
5978                 return -1;
5979
5980         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5981         for (idx = 0; idx < 64; idx++) {
5982                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5983                 new_addr[0] ^= idx << 2;
5984                 if (!nl80211_addr_in_use(drv->global, new_addr))
5985                         break;
5986         }
5987         if (idx == 64)
5988                 return -1;
5989
5990         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5991                    MACSTR, MAC2STR(new_addr));
5992
5993         return 0;
5994 }
5995
5996
5997 struct wdev_info {
5998         u64 wdev_id;
5999         int wdev_id_set;
6000         u8 macaddr[ETH_ALEN];
6001 };
6002
6003 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6004 {
6005         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6006         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6007         struct wdev_info *wi = arg;
6008
6009         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6010                   genlmsg_attrlen(gnlh, 0), NULL);
6011         if (tb[NL80211_ATTR_WDEV]) {
6012                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6013                 wi->wdev_id_set = 1;
6014         }
6015
6016         if (tb[NL80211_ATTR_MAC])
6017                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6018                           ETH_ALEN);
6019
6020         return NL_SKIP;
6021 }
6022
6023
6024 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6025                                      const char *ifname, const u8 *addr,
6026                                      void *bss_ctx, void **drv_priv,
6027                                      char *force_ifname, u8 *if_addr,
6028                                      const char *bridge, int use_existing,
6029                                      int setup_ap)
6030 {
6031         enum nl80211_iftype nlmode;
6032         struct i802_bss *bss = priv;
6033         struct wpa_driver_nl80211_data *drv = bss->drv;
6034         int ifidx;
6035         int added = 1;
6036
6037         if (addr)
6038                 os_memcpy(if_addr, addr, ETH_ALEN);
6039         nlmode = wpa_driver_nl80211_if_type(type);
6040         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6041                 struct wdev_info p2pdev_info;
6042
6043                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6044                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6045                                              0, nl80211_wdev_handler,
6046                                              &p2pdev_info, use_existing);
6047                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6048                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6049                                    ifname);
6050                         return -1;
6051                 }
6052
6053                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6054                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6055                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6056                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6057                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6058                            ifname,
6059                            (long long unsigned int) p2pdev_info.wdev_id);
6060         } else {
6061                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6062                                              0, NULL, NULL, use_existing);
6063                 if (use_existing && ifidx == -ENFILE) {
6064                         added = 0;
6065                         ifidx = if_nametoindex(ifname);
6066                 } else if (ifidx < 0) {
6067                         return -1;
6068                 }
6069         }
6070
6071         if (!addr) {
6072                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
6073                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6074                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6075                                             ifname, if_addr) < 0) {
6076                         if (added)
6077                                 nl80211_remove_iface(drv, ifidx);
6078                         return -1;
6079                 }
6080         }
6081
6082         if (!addr &&
6083             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6084              type == WPA_IF_P2P_GO || type == WPA_IF_MESH ||
6085              type == WPA_IF_STATION)) {
6086                 /* Enforce unique address */
6087                 u8 new_addr[ETH_ALEN];
6088
6089                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6090                                        new_addr) < 0) {
6091                         if (added)
6092                                 nl80211_remove_iface(drv, ifidx);
6093                         return -1;
6094                 }
6095                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6096                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6097                                    "for interface %s type %d", ifname, type);
6098                         if (nl80211_vif_addr(drv, new_addr) < 0) {
6099                                 if (added)
6100                                         nl80211_remove_iface(drv, ifidx);
6101                                 return -1;
6102                         }
6103                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6104                                                new_addr) < 0) {
6105                                 if (added)
6106                                         nl80211_remove_iface(drv, ifidx);
6107                                 return -1;
6108                         }
6109                 }
6110                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6111         }
6112
6113         if (type == WPA_IF_AP_BSS && setup_ap) {
6114                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6115                 if (new_bss == NULL) {
6116                         if (added)
6117                                 nl80211_remove_iface(drv, ifidx);
6118                         return -1;
6119                 }
6120
6121                 if (bridge &&
6122                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6123                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6124                                    "interface %s to a bridge %s",
6125                                    ifname, bridge);
6126                         if (added)
6127                                 nl80211_remove_iface(drv, ifidx);
6128                         os_free(new_bss);
6129                         return -1;
6130                 }
6131
6132                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6133                 {
6134                         if (added)
6135                                 nl80211_remove_iface(drv, ifidx);
6136                         os_free(new_bss);
6137                         return -1;
6138                 }
6139                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6140                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6141                 new_bss->ifindex = ifidx;
6142                 new_bss->drv = drv;
6143                 new_bss->next = drv->first_bss->next;
6144                 new_bss->freq = drv->first_bss->freq;
6145                 new_bss->ctx = bss_ctx;
6146                 new_bss->added_if = added;
6147                 drv->first_bss->next = new_bss;
6148                 if (drv_priv)
6149                         *drv_priv = new_bss;
6150                 nl80211_init_bss(new_bss);
6151
6152                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6153                 if (nl80211_setup_ap(new_bss))
6154                         return -1;
6155         }
6156
6157         if (drv->global)
6158                 drv->global->if_add_ifindex = ifidx;
6159
6160         /*
6161          * Some virtual interfaces need to process EAPOL packets and events on
6162          * the parent interface. This is used mainly with hostapd.
6163          */
6164         if (ifidx > 0 &&
6165             (drv->hostapd ||
6166              nlmode == NL80211_IFTYPE_AP_VLAN ||
6167              nlmode == NL80211_IFTYPE_WDS ||
6168              nlmode == NL80211_IFTYPE_MONITOR))
6169                 add_ifidx(drv, ifidx);
6170
6171         return 0;
6172 }
6173
6174
6175 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6176                                         enum wpa_driver_if_type type,
6177                                         const char *ifname)
6178 {
6179         struct wpa_driver_nl80211_data *drv = bss->drv;
6180         int ifindex = if_nametoindex(ifname);
6181
6182         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6183                    __func__, type, ifname, ifindex, bss->added_if);
6184         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6185                 nl80211_remove_iface(drv, ifindex);
6186         else if (ifindex > 0 && !bss->added_if) {
6187                 struct wpa_driver_nl80211_data *drv2;
6188                 dl_list_for_each(drv2, &drv->global->interfaces,
6189                                  struct wpa_driver_nl80211_data, list)
6190                         del_ifidx(drv2, ifindex);
6191         }
6192
6193         if (type != WPA_IF_AP_BSS)
6194                 return 0;
6195
6196         if (bss->added_if_into_bridge) {
6197                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6198                                     bss->ifname) < 0)
6199                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6200                                    "interface %s from bridge %s: %s",
6201                                    bss->ifname, bss->brname, strerror(errno));
6202         }
6203         if (bss->added_bridge) {
6204                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6205                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6206                                    "bridge %s: %s",
6207                                    bss->brname, strerror(errno));
6208         }
6209
6210         if (bss != drv->first_bss) {
6211                 struct i802_bss *tbss;
6212
6213                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6214                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6215                         if (tbss->next == bss) {
6216                                 tbss->next = bss->next;
6217                                 /* Unsubscribe management frames */
6218                                 nl80211_teardown_ap(bss);
6219                                 nl80211_destroy_bss(bss);
6220                                 if (!bss->added_if)
6221                                         i802_set_iface_flags(bss, 0);
6222                                 os_free(bss);
6223                                 bss = NULL;
6224                                 break;
6225                         }
6226                 }
6227                 if (bss)
6228                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6229                                    "BSS %p in the list", __func__, bss);
6230         } else {
6231                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6232                 nl80211_teardown_ap(bss);
6233                 if (!bss->added_if && !drv->first_bss->next)
6234                         wpa_driver_nl80211_del_beacon(drv);
6235                 nl80211_destroy_bss(bss);
6236                 if (!bss->added_if)
6237                         i802_set_iface_flags(bss, 0);
6238                 if (drv->first_bss->next) {
6239                         drv->first_bss = drv->first_bss->next;
6240                         drv->ctx = drv->first_bss->ctx;
6241                         os_free(bss);
6242                 } else {
6243                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6244                 }
6245         }
6246
6247         return 0;
6248 }
6249
6250
6251 static int cookie_handler(struct nl_msg *msg, void *arg)
6252 {
6253         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6254         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6255         u64 *cookie = arg;
6256         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6257                   genlmsg_attrlen(gnlh, 0), NULL);
6258         if (tb[NL80211_ATTR_COOKIE])
6259                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6260         return NL_SKIP;
6261 }
6262
6263
6264 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6265                                   unsigned int freq, unsigned int wait,
6266                                   const u8 *buf, size_t buf_len,
6267                                   u64 *cookie_out, int no_cck, int no_ack,
6268                                   int offchanok, const u16 *csa_offs,
6269                                   size_t csa_offs_len)
6270 {
6271         struct wpa_driver_nl80211_data *drv = bss->drv;
6272         struct nl_msg *msg;
6273         u64 cookie;
6274         int ret = -1;
6275
6276         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6277                    "no_ack=%d offchanok=%d",
6278                    freq, wait, no_cck, no_ack, offchanok);
6279         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6280
6281         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6282             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6283             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6284             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6285                            drv->test_use_roc_tx) &&
6286              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6287             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6288             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6289             (csa_offs && nla_put(msg, NL80211_ATTR_CSA_C_OFFSETS_TX,
6290                                  csa_offs_len * sizeof(u16), csa_offs)) ||
6291             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6292                 goto fail;
6293
6294         cookie = 0;
6295         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6296         msg = NULL;
6297         if (ret) {
6298                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6299                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6300                            freq, wait);
6301         } else {
6302                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6303                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6304                            (long long unsigned int) cookie);
6305
6306                 if (cookie_out)
6307                         *cookie_out = no_ack ? (u64) -1 : cookie;
6308
6309                 if (drv->num_send_action_cookies == MAX_SEND_ACTION_COOKIES) {
6310                         wpa_printf(MSG_DEBUG,
6311                                    "nl80211: Drop oldest pending send action cookie 0x%llx",
6312                                    (long long unsigned int)
6313                                    drv->send_action_cookies[0]);
6314                         os_memmove(&drv->send_action_cookies[0],
6315                                    &drv->send_action_cookies[1],
6316                                    (MAX_SEND_ACTION_COOKIES - 1) *
6317                                    sizeof(u64));
6318                         drv->num_send_action_cookies--;
6319                 }
6320                 drv->send_action_cookies[drv->num_send_action_cookies] = cookie;
6321                 drv->num_send_action_cookies++;
6322         }
6323
6324 fail:
6325         nlmsg_free(msg);
6326         return ret;
6327 }
6328
6329
6330 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6331                                           unsigned int freq,
6332                                           unsigned int wait_time,
6333                                           const u8 *dst, const u8 *src,
6334                                           const u8 *bssid,
6335                                           const u8 *data, size_t data_len,
6336                                           int no_cck)
6337 {
6338         struct wpa_driver_nl80211_data *drv = bss->drv;
6339         int ret = -1;
6340         u8 *buf;
6341         struct ieee80211_hdr *hdr;
6342
6343         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6344                    "freq=%u MHz wait=%d ms no_cck=%d)",
6345                    drv->ifindex, freq, wait_time, no_cck);
6346
6347         buf = os_zalloc(24 + data_len);
6348         if (buf == NULL)
6349                 return ret;
6350         os_memcpy(buf + 24, data, data_len);
6351         hdr = (struct ieee80211_hdr *) buf;
6352         hdr->frame_control =
6353                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6354         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6355         os_memcpy(hdr->addr2, src, ETH_ALEN);
6356         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6357
6358         if (is_ap_interface(drv->nlmode) &&
6359             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6360              (int) freq == bss->freq || drv->device_ap_sme ||
6361              !drv->use_monitor))
6362                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6363                                                    0, freq, no_cck, 1,
6364                                                    wait_time, NULL, 0);
6365         else
6366                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6367                                              24 + data_len,
6368                                              &drv->send_action_cookie,
6369                                              no_cck, 0, 1, NULL, 0);
6370
6371         os_free(buf);
6372         return ret;
6373 }
6374
6375
6376 static void nl80211_frame_wait_cancel(struct i802_bss *bss, u64 cookie)
6377 {
6378         struct wpa_driver_nl80211_data *drv = bss->drv;
6379         struct nl_msg *msg;
6380         int ret;
6381
6382         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6383                    (long long unsigned int) cookie);
6384         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6385             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) {
6386                 nlmsg_free(msg);
6387                 return;
6388         }
6389
6390         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6391         if (ret)
6392                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6393                            "(%s)", ret, strerror(-ret));
6394 }
6395
6396
6397 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6398 {
6399         struct i802_bss *bss = priv;
6400         struct wpa_driver_nl80211_data *drv = bss->drv;
6401         unsigned int i;
6402         u64 cookie;
6403
6404         /* Cancel the last pending TX cookie */
6405         nl80211_frame_wait_cancel(bss, drv->send_action_cookie);
6406
6407         /*
6408          * Cancel the other pending TX cookies, if any. This is needed since
6409          * the driver may keep a list of all pending offchannel TX operations
6410          * and free up the radio only once they have expired or cancelled.
6411          */
6412         for (i = drv->num_send_action_cookies; i > 0; i--) {
6413                 cookie = drv->send_action_cookies[i - 1];
6414                 if (cookie != drv->send_action_cookie)
6415                         nl80211_frame_wait_cancel(bss, cookie);
6416         }
6417         drv->num_send_action_cookies = 0;
6418 }
6419
6420
6421 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6422                                                 unsigned int duration)
6423 {
6424         struct i802_bss *bss = priv;
6425         struct wpa_driver_nl80211_data *drv = bss->drv;
6426         struct nl_msg *msg;
6427         int ret;
6428         u64 cookie;
6429
6430         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6431             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6432             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6433                 nlmsg_free(msg);
6434                 return -1;
6435         }
6436
6437         cookie = 0;
6438         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6439         if (ret == 0) {
6440                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6441                            "0x%llx for freq=%u MHz duration=%u",
6442                            (long long unsigned int) cookie, freq, duration);
6443                 drv->remain_on_chan_cookie = cookie;
6444                 drv->pending_remain_on_chan = 1;
6445                 return 0;
6446         }
6447         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6448                    "(freq=%d duration=%u): %d (%s)",
6449                    freq, duration, ret, strerror(-ret));
6450         return -1;
6451 }
6452
6453
6454 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6455 {
6456         struct i802_bss *bss = priv;
6457         struct wpa_driver_nl80211_data *drv = bss->drv;
6458         struct nl_msg *msg;
6459         int ret;
6460
6461         if (!drv->pending_remain_on_chan) {
6462                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6463                            "to cancel");
6464                 return -1;
6465         }
6466
6467         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6468                    "0x%llx",
6469                    (long long unsigned int) drv->remain_on_chan_cookie);
6470
6471         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6472         if (!msg ||
6473             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6474                 nlmsg_free(msg);
6475                 return -1;
6476         }
6477
6478         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6479         if (ret == 0)
6480                 return 0;
6481         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6482                    "%d (%s)", ret, strerror(-ret));
6483         return -1;
6484 }
6485
6486
6487 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6488 {
6489         struct wpa_driver_nl80211_data *drv = bss->drv;
6490
6491         if (!report) {
6492                 if (bss->nl_preq && drv->device_ap_sme &&
6493                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6494                     !bss->static_ap) {
6495                         /*
6496                          * Do not disable Probe Request reporting that was
6497                          * enabled in nl80211_setup_ap().
6498                          */
6499                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6500                                    "Probe Request reporting nl_preq=%p while "
6501                                    "in AP mode", bss->nl_preq);
6502                 } else if (bss->nl_preq) {
6503                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6504                                    "reporting nl_preq=%p", bss->nl_preq);
6505                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6506                 }
6507                 return 0;
6508         }
6509
6510         if (bss->nl_preq) {
6511                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6512                            "already on! nl_preq=%p", bss->nl_preq);
6513                 return 0;
6514         }
6515
6516         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6517         if (bss->nl_preq == NULL)
6518                 return -1;
6519         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6520                    "reporting nl_preq=%p", bss->nl_preq);
6521
6522         if (nl80211_register_frame(bss, bss->nl_preq,
6523                                    (WLAN_FC_TYPE_MGMT << 2) |
6524                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6525                                    NULL, 0) < 0)
6526                 goto out_err;
6527
6528         nl80211_register_eloop_read(&bss->nl_preq,
6529                                     wpa_driver_nl80211_event_receive,
6530                                     bss->nl_cb);
6531
6532         return 0;
6533
6534  out_err:
6535         nl_destroy_handles(&bss->nl_preq);
6536         return -1;
6537 }
6538
6539
6540 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6541                                      int ifindex, int disabled)
6542 {
6543         struct nl_msg *msg;
6544         struct nlattr *bands, *band;
6545         int ret;
6546
6547         wpa_printf(MSG_DEBUG,
6548                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6549                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6550                    "no NL80211_TXRATE_LEGACY constraint");
6551
6552         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6553                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6554         if (!msg)
6555                 return -1;
6556
6557         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6558         if (!bands)
6559                 goto fail;
6560
6561         /*
6562          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6563          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6564          * rates. All 5 GHz rates are left enabled.
6565          */
6566         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6567         if (!band ||
6568             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6569                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6570                 goto fail;
6571         nla_nest_end(msg, band);
6572
6573         nla_nest_end(msg, bands);
6574
6575         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6576         if (ret) {
6577                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6578                            "(%s)", ret, strerror(-ret));
6579         } else
6580                 drv->disabled_11b_rates = disabled;
6581
6582         return ret;
6583
6584 fail:
6585         nlmsg_free(msg);
6586         return -1;
6587 }
6588
6589
6590 static int wpa_driver_nl80211_deinit_ap(void *priv)
6591 {
6592         struct i802_bss *bss = priv;
6593         struct wpa_driver_nl80211_data *drv = bss->drv;
6594         if (!is_ap_interface(drv->nlmode))
6595                 return -1;
6596         wpa_driver_nl80211_del_beacon(drv);
6597         bss->beacon_set = 0;
6598
6599         /*
6600          * If the P2P GO interface was dynamically added, then it is
6601          * possible that the interface change to station is not possible.
6602          */
6603         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6604                 return 0;
6605
6606         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6607 }
6608
6609
6610 static int wpa_driver_nl80211_stop_ap(void *priv)
6611 {
6612         struct i802_bss *bss = priv;
6613         struct wpa_driver_nl80211_data *drv = bss->drv;
6614         if (!is_ap_interface(drv->nlmode))
6615                 return -1;
6616         wpa_driver_nl80211_del_beacon(drv);
6617         bss->beacon_set = 0;
6618         return 0;
6619 }
6620
6621
6622 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6623 {
6624         struct i802_bss *bss = priv;
6625         struct wpa_driver_nl80211_data *drv = bss->drv;
6626         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6627                 return -1;
6628
6629         /*
6630          * If the P2P Client interface was dynamically added, then it is
6631          * possible that the interface change to station is not possible.
6632          */
6633         if (bss->if_dynamic)
6634                 return 0;
6635
6636         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6637 }
6638
6639
6640 static void wpa_driver_nl80211_resume(void *priv)
6641 {
6642         struct i802_bss *bss = priv;
6643         enum nl80211_iftype nlmode = nl80211_get_ifmode(bss);
6644
6645         if (i802_set_iface_flags(bss, 1))
6646                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6647
6648         if (is_p2p_net_interface(nlmode))
6649                 nl80211_disable_11b_rates(bss->drv, bss->drv->ifindex, 1);
6650 }
6651
6652
6653 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6654 {
6655         struct i802_bss *bss = priv;
6656         struct wpa_driver_nl80211_data *drv = bss->drv;
6657         struct nl_msg *msg;
6658         struct nlattr *cqm;
6659
6660         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6661                    "hysteresis=%d", threshold, hysteresis);
6662
6663         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6664             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6665             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6666             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6667                 nlmsg_free(msg);
6668                 return -1;
6669         }
6670         nla_nest_end(msg, cqm);
6671
6672         return send_and_recv_msgs(drv, msg, NULL, NULL);
6673 }
6674
6675
6676 static int get_channel_width(struct nl_msg *msg, void *arg)
6677 {
6678         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6679         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6680         struct wpa_signal_info *sig_change = arg;
6681
6682         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6683                   genlmsg_attrlen(gnlh, 0), NULL);
6684
6685         sig_change->center_frq1 = -1;
6686         sig_change->center_frq2 = -1;
6687         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6688
6689         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6690                 sig_change->chanwidth = convert2width(
6691                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6692                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6693                         sig_change->center_frq1 =
6694                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6695                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6696                         sig_change->center_frq2 =
6697                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6698         }
6699
6700         return NL_SKIP;
6701 }
6702
6703
6704 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6705                                      struct wpa_signal_info *sig)
6706 {
6707         struct nl_msg *msg;
6708
6709         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6710         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6711 }
6712
6713
6714 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6715 {
6716         struct i802_bss *bss = priv;
6717         struct wpa_driver_nl80211_data *drv = bss->drv;
6718         int res;
6719
6720         os_memset(si, 0, sizeof(*si));
6721         res = nl80211_get_link_signal(drv, si);
6722         if (res) {
6723                 if (drv->nlmode != NL80211_IFTYPE_ADHOC &&
6724                     drv->nlmode != NL80211_IFTYPE_MESH_POINT)
6725                         return res;
6726                 si->current_signal = 0;
6727         }
6728
6729         res = nl80211_get_channel_width(drv, si);
6730         if (res != 0)
6731                 return res;
6732
6733         return nl80211_get_link_noise(drv, si);
6734 }
6735
6736
6737 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6738                               int encrypt)
6739 {
6740         struct i802_bss *bss = priv;
6741         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6742                                              0, 0, 0, 0, NULL, 0);
6743 }
6744
6745
6746 static int nl80211_set_param(void *priv, const char *param)
6747 {
6748         if (param == NULL)
6749                 return 0;
6750         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6751
6752 #ifdef CONFIG_P2P
6753         if (os_strstr(param, "use_p2p_group_interface=1")) {
6754                 struct i802_bss *bss = priv;
6755                 struct wpa_driver_nl80211_data *drv = bss->drv;
6756
6757                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6758                            "interface");
6759                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6760                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6761         }
6762 #endif /* CONFIG_P2P */
6763
6764         if (os_strstr(param, "use_monitor=1")) {
6765                 struct i802_bss *bss = priv;
6766                 struct wpa_driver_nl80211_data *drv = bss->drv;
6767                 drv->use_monitor = 1;
6768         }
6769
6770         if (os_strstr(param, "force_connect_cmd=1")) {
6771                 struct i802_bss *bss = priv;
6772                 struct wpa_driver_nl80211_data *drv = bss->drv;
6773                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6774                 drv->force_connect_cmd = 1;
6775         }
6776
6777         if (os_strstr(param, "no_offchannel_tx=1")) {
6778                 struct i802_bss *bss = priv;
6779                 struct wpa_driver_nl80211_data *drv = bss->drv;
6780                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6781                 drv->test_use_roc_tx = 1;
6782         }
6783
6784         return 0;
6785 }
6786
6787
6788 static void * nl80211_global_init(void)
6789 {
6790         struct nl80211_global *global;
6791         struct netlink_config *cfg;
6792
6793         global = os_zalloc(sizeof(*global));
6794         if (global == NULL)
6795                 return NULL;
6796         global->ioctl_sock = -1;
6797         dl_list_init(&global->interfaces);
6798         global->if_add_ifindex = -1;
6799
6800         cfg = os_zalloc(sizeof(*cfg));
6801         if (cfg == NULL)
6802                 goto err;
6803
6804         cfg->ctx = global;
6805         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6806         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6807         global->netlink = netlink_init(cfg);
6808         if (global->netlink == NULL) {
6809                 os_free(cfg);
6810                 goto err;
6811         }
6812
6813         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6814                 goto err;
6815
6816         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6817         if (global->ioctl_sock < 0) {
6818                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6819                            strerror(errno));
6820                 goto err;
6821         }
6822
6823         return global;
6824
6825 err:
6826         nl80211_global_deinit(global);
6827         return NULL;
6828 }
6829
6830
6831 static void nl80211_global_deinit(void *priv)
6832 {
6833         struct nl80211_global *global = priv;
6834         if (global == NULL)
6835                 return;
6836         if (!dl_list_empty(&global->interfaces)) {
6837                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6838                            "nl80211_global_deinit",
6839                            dl_list_len(&global->interfaces));
6840         }
6841
6842         if (global->netlink)
6843                 netlink_deinit(global->netlink);
6844
6845         nl_destroy_handles(&global->nl);
6846
6847         if (global->nl_event)
6848                 nl80211_destroy_eloop_handle(&global->nl_event);
6849
6850         nl_cb_put(global->nl_cb);
6851
6852         if (global->ioctl_sock >= 0)
6853                 close(global->ioctl_sock);
6854
6855         os_free(global);
6856 }
6857
6858
6859 static const char * nl80211_get_radio_name(void *priv)
6860 {
6861         struct i802_bss *bss = priv;
6862         struct wpa_driver_nl80211_data *drv = bss->drv;
6863         return drv->phyname;
6864 }
6865
6866
6867 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6868                          const u8 *pmkid)
6869 {
6870         struct nl_msg *msg;
6871
6872         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6873             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6874             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6875                 nlmsg_free(msg);
6876                 return -ENOBUFS;
6877         }
6878
6879         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6880 }
6881
6882
6883 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6884 {
6885         struct i802_bss *bss = priv;
6886         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6887         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6888 }
6889
6890
6891 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6892 {
6893         struct i802_bss *bss = priv;
6894         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6895                    MAC2STR(bssid));
6896         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6897 }
6898
6899
6900 static int nl80211_flush_pmkid(void *priv)
6901 {
6902         struct i802_bss *bss = priv;
6903         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6904         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6905 }
6906
6907
6908 static void clean_survey_results(struct survey_results *survey_results)
6909 {
6910         struct freq_survey *survey, *tmp;
6911
6912         if (dl_list_empty(&survey_results->survey_list))
6913                 return;
6914
6915         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6916                               struct freq_survey, list) {
6917                 dl_list_del(&survey->list);
6918                 os_free(survey);
6919         }
6920 }
6921
6922
6923 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6924                        struct dl_list *survey_list)
6925 {
6926         struct freq_survey *survey;
6927
6928         survey = os_zalloc(sizeof(struct freq_survey));
6929         if  (!survey)
6930                 return;
6931
6932         survey->ifidx = ifidx;
6933         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6934         survey->filled = 0;
6935
6936         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6937                 survey->nf = (int8_t)
6938                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6939                 survey->filled |= SURVEY_HAS_NF;
6940         }
6941
6942         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6943                 survey->channel_time =
6944                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6945                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6946         }
6947
6948         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6949                 survey->channel_time_busy =
6950                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6951                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6952         }
6953
6954         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6955                 survey->channel_time_rx =
6956                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6957                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6958         }
6959
6960         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6961                 survey->channel_time_tx =
6962                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6963                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6964         }
6965
6966         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)",
6967                    survey->freq,
6968                    survey->nf,
6969                    (unsigned long int) survey->channel_time,
6970                    (unsigned long int) survey->channel_time_busy,
6971                    (unsigned long int) survey->channel_time_tx,
6972                    (unsigned long int) survey->channel_time_rx,
6973                    survey->filled);
6974
6975         dl_list_add_tail(survey_list, &survey->list);
6976 }
6977
6978
6979 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6980                            unsigned int freq_filter)
6981 {
6982         if (!freq_filter)
6983                 return 1;
6984
6985         return freq_filter == surveyed_freq;
6986 }
6987
6988
6989 static int survey_handler(struct nl_msg *msg, void *arg)
6990 {
6991         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6992         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6993         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6994         struct survey_results *survey_results;
6995         u32 surveyed_freq = 0;
6996         u32 ifidx;
6997
6998         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6999                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7000                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7001         };
7002
7003         survey_results = (struct survey_results *) arg;
7004
7005         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7006                   genlmsg_attrlen(gnlh, 0), NULL);
7007
7008         if (!tb[NL80211_ATTR_IFINDEX])
7009                 return NL_SKIP;
7010
7011         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7012
7013         if (!tb[NL80211_ATTR_SURVEY_INFO])
7014                 return NL_SKIP;
7015
7016         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7017                              tb[NL80211_ATTR_SURVEY_INFO],
7018                              survey_policy))
7019                 return NL_SKIP;
7020
7021         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7022                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7023                 return NL_SKIP;
7024         }
7025
7026         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7027
7028         if (!check_survey_ok(sinfo, surveyed_freq,
7029                              survey_results->freq_filter))
7030                 return NL_SKIP;
7031
7032         if (survey_results->freq_filter &&
7033             survey_results->freq_filter != surveyed_freq) {
7034                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7035                            surveyed_freq);
7036                 return NL_SKIP;
7037         }
7038
7039         add_survey(sinfo, ifidx, &survey_results->survey_list);
7040
7041         return NL_SKIP;
7042 }
7043
7044
7045 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7046 {
7047         struct i802_bss *bss = priv;
7048         struct wpa_driver_nl80211_data *drv = bss->drv;
7049         struct nl_msg *msg;
7050         int err;
7051         union wpa_event_data data;
7052         struct survey_results *survey_results;
7053
7054         os_memset(&data, 0, sizeof(data));
7055         survey_results = &data.survey_results;
7056
7057         dl_list_init(&survey_results->survey_list);
7058
7059         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7060         if (!msg)
7061                 return -ENOBUFS;
7062
7063         if (freq)
7064                 data.survey_results.freq_filter = freq;
7065
7066         do {
7067                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7068                 err = send_and_recv_msgs(drv, msg, survey_handler,
7069                                          survey_results);
7070         } while (err > 0);
7071
7072         if (err)
7073                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7074         else
7075                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7076
7077         clean_survey_results(survey_results);
7078         return err;
7079 }
7080
7081
7082 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
7083                                    const u8 *kck, size_t kck_len,
7084                                    const u8 *replay_ctr)
7085 {
7086         struct i802_bss *bss = priv;
7087         struct wpa_driver_nl80211_data *drv = bss->drv;
7088         struct nlattr *replay_nested;
7089         struct nl_msg *msg;
7090         int ret;
7091
7092         if (!drv->set_rekey_offload)
7093                 return;
7094
7095         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
7096         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
7097             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
7098             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
7099             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
7100             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7101                     replay_ctr)) {
7102                 nl80211_nlmsg_clear(msg);
7103                 nlmsg_free(msg);
7104                 return;
7105         }
7106
7107         nla_nest_end(msg, replay_nested);
7108
7109         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
7110         if (ret == -EOPNOTSUPP) {
7111                 wpa_printf(MSG_DEBUG,
7112                            "nl80211: Driver does not support rekey offload");
7113                 drv->set_rekey_offload = 0;
7114         }
7115 }
7116
7117
7118 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7119                                     const u8 *addr, int qos)
7120 {
7121         /* send data frame to poll STA and check whether
7122          * this frame is ACKed */
7123         struct {
7124                 struct ieee80211_hdr hdr;
7125                 u16 qos_ctl;
7126         } STRUCT_PACKED nulldata;
7127         size_t size;
7128
7129         /* Send data frame to poll STA and check whether this frame is ACKed */
7130
7131         os_memset(&nulldata, 0, sizeof(nulldata));
7132
7133         if (qos) {
7134                 nulldata.hdr.frame_control =
7135                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7136                                      WLAN_FC_STYPE_QOS_NULL);
7137                 size = sizeof(nulldata);
7138         } else {
7139                 nulldata.hdr.frame_control =
7140                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7141                                      WLAN_FC_STYPE_NULLFUNC);
7142                 size = sizeof(struct ieee80211_hdr);
7143         }
7144
7145         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7146         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7147         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7148         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7149
7150         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7151                                          0, 0, NULL, 0) < 0)
7152                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7153                            "send poll frame");
7154 }
7155
7156 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7157                                 int qos)
7158 {
7159         struct i802_bss *bss = priv;
7160         struct wpa_driver_nl80211_data *drv = bss->drv;
7161         struct nl_msg *msg;
7162         int ret;
7163
7164         if (!drv->poll_command_supported) {
7165                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7166                 return;
7167         }
7168
7169         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
7170             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7171                 nlmsg_free(msg);
7172                 return;
7173         }
7174
7175         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7176         if (ret < 0) {
7177                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
7178                            MACSTR " failed: ret=%d (%s)",
7179                            MAC2STR(addr), ret, strerror(-ret));
7180         }
7181 }
7182
7183
7184 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7185 {
7186         struct nl_msg *msg;
7187
7188         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
7189             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7190                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7191                 nlmsg_free(msg);
7192                 return -ENOBUFS;
7193         }
7194         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7195 }
7196
7197
7198 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7199                                      int ctwindow)
7200 {
7201         struct i802_bss *bss = priv;
7202
7203         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7204                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7205
7206         if (opp_ps != -1 || ctwindow != -1) {
7207 #ifdef ANDROID_P2P
7208                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7209 #else /* ANDROID_P2P */
7210                 return -1; /* Not yet supported */
7211 #endif /* ANDROID_P2P */
7212         }
7213
7214         if (legacy_ps == -1)
7215                 return 0;
7216         if (legacy_ps != 0 && legacy_ps != 1)
7217                 return -1; /* Not yet supported */
7218
7219         return nl80211_set_power_save(bss, legacy_ps);
7220 }
7221
7222
7223 static int nl80211_start_radar_detection(void *priv,
7224                                          struct hostapd_freq_params *freq)
7225 {
7226         struct i802_bss *bss = priv;
7227         struct wpa_driver_nl80211_data *drv = bss->drv;
7228         struct nl_msg *msg;
7229         int ret;
7230
7231         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)",
7232                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7233                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7234
7235         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7236                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7237                            "detection");
7238                 return -1;
7239         }
7240
7241         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7242             nl80211_put_freq_params(msg, freq) < 0) {
7243                 nlmsg_free(msg);
7244                 return -1;
7245         }
7246
7247         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7248         if (ret == 0)
7249                 return 0;
7250         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7251                    "%d (%s)", ret, strerror(-ret));
7252         return -1;
7253 }
7254
7255 #ifdef CONFIG_TDLS
7256
7257 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7258                                   u8 dialog_token, u16 status_code,
7259                                   u32 peer_capab, int initiator, const u8 *buf,
7260                                   size_t len)
7261 {
7262         struct i802_bss *bss = priv;
7263         struct wpa_driver_nl80211_data *drv = bss->drv;
7264         struct nl_msg *msg;
7265
7266         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7267                 return -EOPNOTSUPP;
7268
7269         if (!dst)
7270                 return -EINVAL;
7271
7272         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7273             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7274             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7275             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7276             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7277                 goto fail;
7278         if (peer_capab) {
7279                 /*
7280                  * The internal enum tdls_peer_capability definition is
7281                  * currently identical with the nl80211 enum
7282                  * nl80211_tdls_peer_capability, so no conversion is needed
7283                  * here.
7284                  */
7285                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7286                                 peer_capab))
7287                         goto fail;
7288         }
7289         if ((initiator &&
7290              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7291             nla_put(msg, NL80211_ATTR_IE, len, buf))
7292                 goto fail;
7293
7294         return send_and_recv_msgs(drv, msg, NULL, NULL);
7295
7296 fail:
7297         nlmsg_free(msg);
7298         return -ENOBUFS;
7299 }
7300
7301
7302 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7303 {
7304         struct i802_bss *bss = priv;
7305         struct wpa_driver_nl80211_data *drv = bss->drv;
7306         struct nl_msg *msg;
7307         enum nl80211_tdls_operation nl80211_oper;
7308
7309         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7310                 return -EOPNOTSUPP;
7311
7312         switch (oper) {
7313         case TDLS_DISCOVERY_REQ:
7314                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7315                 break;
7316         case TDLS_SETUP:
7317                 nl80211_oper = NL80211_TDLS_SETUP;
7318                 break;
7319         case TDLS_TEARDOWN:
7320                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7321                 break;
7322         case TDLS_ENABLE_LINK:
7323                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7324                 break;
7325         case TDLS_DISABLE_LINK:
7326                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7327                 break;
7328         case TDLS_ENABLE:
7329                 return 0;
7330         case TDLS_DISABLE:
7331                 return 0;
7332         default:
7333                 return -EINVAL;
7334         }
7335
7336         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7337             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7338             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7339                 nlmsg_free(msg);
7340                 return -ENOBUFS;
7341         }
7342
7343         return send_and_recv_msgs(drv, msg, NULL, NULL);
7344 }
7345
7346
7347 static int
7348 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7349                                    const struct hostapd_freq_params *params)
7350 {
7351         struct i802_bss *bss = priv;
7352         struct wpa_driver_nl80211_data *drv = bss->drv;
7353         struct nl_msg *msg;
7354         int ret = -ENOBUFS;
7355
7356         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7357             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7358                 return -EOPNOTSUPP;
7359
7360         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7361                    " oper_class=%u freq=%u",
7362                    MAC2STR(addr), oper_class, params->freq);
7363         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7364         if (!msg ||
7365             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7366             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7367             (ret = nl80211_put_freq_params(msg, params))) {
7368                 nlmsg_free(msg);
7369                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7370                 return ret;
7371         }
7372
7373         return send_and_recv_msgs(drv, msg, NULL, NULL);
7374 }
7375
7376
7377 static int
7378 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7379 {
7380         struct i802_bss *bss = priv;
7381         struct wpa_driver_nl80211_data *drv = bss->drv;
7382         struct nl_msg *msg;
7383
7384         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7385             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7386                 return -EOPNOTSUPP;
7387
7388         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7389                    MAC2STR(addr));
7390         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7391         if (!msg ||
7392             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7393                 nlmsg_free(msg);
7394                 wpa_printf(MSG_DEBUG,
7395                            "nl80211: Could not build TDLS cancel chan switch");
7396                 return -ENOBUFS;
7397         }
7398
7399         return send_and_recv_msgs(drv, msg, NULL, NULL);
7400 }
7401
7402 #endif /* CONFIG TDLS */
7403
7404
7405 static int driver_nl80211_set_key(const char *ifname, void *priv,
7406                                   enum wpa_alg alg, const u8 *addr,
7407                                   int key_idx, int set_tx,
7408                                   const u8 *seq, size_t seq_len,
7409                                   const u8 *key, size_t key_len)
7410 {
7411         struct i802_bss *bss = priv;
7412         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7413                                           set_tx, seq, seq_len, key, key_len);
7414 }
7415
7416
7417 static int driver_nl80211_scan2(void *priv,
7418                                 struct wpa_driver_scan_params *params)
7419 {
7420         struct i802_bss *bss = priv;
7421 #ifdef CONFIG_DRIVER_NL80211_QCA
7422         struct wpa_driver_nl80211_data *drv = bss->drv;
7423
7424         /*
7425          * Do a vendor specific scan if possible. If only_new_results is
7426          * set, do a normal scan since a kernel (cfg80211) BSS cache flush
7427          * cannot be achieved through a vendor scan. The below condition may
7428          * need to be modified if new scan flags are added in the future whose
7429          * functionality can only be achieved through a normal scan.
7430          */
7431         if (drv->scan_vendor_cmd_avail && !params->only_new_results)
7432                 return wpa_driver_nl80211_vendor_scan(bss, params);
7433 #endif /* CONFIG_DRIVER_NL80211_QCA */
7434         return wpa_driver_nl80211_scan(bss, params);
7435 }
7436
7437
7438 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7439                                          int reason_code)
7440 {
7441         struct i802_bss *bss = priv;
7442         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7443 }
7444
7445
7446 static int driver_nl80211_authenticate(void *priv,
7447                                        struct wpa_driver_auth_params *params)
7448 {
7449         struct i802_bss *bss = priv;
7450         return wpa_driver_nl80211_authenticate(bss, params);
7451 }
7452
7453
7454 static void driver_nl80211_deinit(void *priv)
7455 {
7456         struct i802_bss *bss = priv;
7457         wpa_driver_nl80211_deinit(bss);
7458 }
7459
7460
7461 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7462                                     const char *ifname)
7463 {
7464         struct i802_bss *bss = priv;
7465         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7466 }
7467
7468
7469 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7470                                     size_t data_len, int noack,
7471                                     unsigned int freq,
7472                                     const u16 *csa_offs, size_t csa_offs_len)
7473 {
7474         struct i802_bss *bss = priv;
7475         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7476                                             freq, 0, 0, 0, csa_offs,
7477                                             csa_offs_len);
7478 }
7479
7480
7481 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7482 {
7483         struct i802_bss *bss = priv;
7484         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7485 }
7486
7487
7488 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7489                                        const char *ifname, int vlan_id)
7490 {
7491         struct i802_bss *bss = priv;
7492         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7493 }
7494
7495
7496 static int driver_nl80211_read_sta_data(void *priv,
7497                                         struct hostap_sta_driver_data *data,
7498                                         const u8 *addr)
7499 {
7500         struct i802_bss *bss = priv;
7501         return i802_read_sta_data(bss, data, addr);
7502 }
7503
7504
7505 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7506                                       unsigned int wait_time,
7507                                       const u8 *dst, const u8 *src,
7508                                       const u8 *bssid,
7509                                       const u8 *data, size_t data_len,
7510                                       int no_cck)
7511 {
7512         struct i802_bss *bss = priv;
7513         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7514                                               bssid, data, data_len, no_cck);
7515 }
7516
7517
7518 static int driver_nl80211_probe_req_report(void *priv, int report)
7519 {
7520         struct i802_bss *bss = priv;
7521         return wpa_driver_nl80211_probe_req_report(bss, report);
7522 }
7523
7524
7525 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7526                                             const u8 *ies, size_t ies_len)
7527 {
7528         int ret;
7529         struct nl_msg *msg;
7530         struct i802_bss *bss = priv;
7531         struct wpa_driver_nl80211_data *drv = bss->drv;
7532         u16 mdid = WPA_GET_LE16(md);
7533
7534         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7535         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7536             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7537             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7538                 nlmsg_free(msg);
7539                 return -ENOBUFS;
7540         }
7541
7542         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7543         if (ret) {
7544                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7545                            "err=%d (%s)", ret, strerror(-ret));
7546         }
7547
7548         return ret;
7549 }
7550
7551
7552 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7553 {
7554         struct i802_bss *bss = priv;
7555         struct wpa_driver_nl80211_data *drv = bss->drv;
7556
7557         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7558                 return NULL;
7559
7560         return bss->addr;
7561 }
7562
7563
7564 static const char * scan_state_str(enum scan_states scan_state)
7565 {
7566         switch (scan_state) {
7567         case NO_SCAN:
7568                 return "NO_SCAN";
7569         case SCAN_REQUESTED:
7570                 return "SCAN_REQUESTED";
7571         case SCAN_STARTED:
7572                 return "SCAN_STARTED";
7573         case SCAN_COMPLETED:
7574                 return "SCAN_COMPLETED";
7575         case SCAN_ABORTED:
7576                 return "SCAN_ABORTED";
7577         case SCHED_SCAN_STARTED:
7578                 return "SCHED_SCAN_STARTED";
7579         case SCHED_SCAN_STOPPED:
7580                 return "SCHED_SCAN_STOPPED";
7581         case SCHED_SCAN_RESULTS:
7582                 return "SCHED_SCAN_RESULTS";
7583         }
7584
7585         return "??";
7586 }
7587
7588
7589 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7590 {
7591         struct i802_bss *bss = priv;
7592         struct wpa_driver_nl80211_data *drv = bss->drv;
7593         int res;
7594         char *pos, *end;
7595
7596         pos = buf;
7597         end = buf + buflen;
7598
7599         res = os_snprintf(pos, end - pos,
7600                           "ifindex=%d\n"
7601                           "ifname=%s\n"
7602                           "brname=%s\n"
7603                           "addr=" MACSTR "\n"
7604                           "freq=%d\n"
7605                           "%s%s%s%s%s",
7606                           bss->ifindex,
7607                           bss->ifname,
7608                           bss->brname,
7609                           MAC2STR(bss->addr),
7610                           bss->freq,
7611                           bss->beacon_set ? "beacon_set=1\n" : "",
7612                           bss->added_if_into_bridge ?
7613                           "added_if_into_bridge=1\n" : "",
7614                           bss->added_bridge ? "added_bridge=1\n" : "",
7615                           bss->in_deinit ? "in_deinit=1\n" : "",
7616                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7617         if (os_snprintf_error(end - pos, res))
7618                 return pos - buf;
7619         pos += res;
7620
7621         if (bss->wdev_id_set) {
7622                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7623                                   (unsigned long long) bss->wdev_id);
7624                 if (os_snprintf_error(end - pos, res))
7625                         return pos - buf;
7626                 pos += res;
7627         }
7628
7629         res = os_snprintf(pos, end - pos,
7630                           "phyname=%s\n"
7631                           "perm_addr=" MACSTR "\n"
7632                           "drv_ifindex=%d\n"
7633                           "operstate=%d\n"
7634                           "scan_state=%s\n"
7635                           "auth_bssid=" MACSTR "\n"
7636                           "auth_attempt_bssid=" MACSTR "\n"
7637                           "bssid=" MACSTR "\n"
7638                           "prev_bssid=" MACSTR "\n"
7639                           "associated=%d\n"
7640                           "assoc_freq=%u\n"
7641                           "monitor_sock=%d\n"
7642                           "monitor_ifidx=%d\n"
7643                           "monitor_refcount=%d\n"
7644                           "last_mgmt_freq=%u\n"
7645                           "eapol_tx_sock=%d\n"
7646                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7647                           drv->phyname,
7648                           MAC2STR(drv->perm_addr),
7649                           drv->ifindex,
7650                           drv->operstate,
7651                           scan_state_str(drv->scan_state),
7652                           MAC2STR(drv->auth_bssid),
7653                           MAC2STR(drv->auth_attempt_bssid),
7654                           MAC2STR(drv->bssid),
7655                           MAC2STR(drv->prev_bssid),
7656                           drv->associated,
7657                           drv->assoc_freq,
7658                           drv->monitor_sock,
7659                           drv->monitor_ifidx,
7660                           drv->monitor_refcount,
7661                           drv->last_mgmt_freq,
7662                           drv->eapol_tx_sock,
7663                           drv->ignore_if_down_event ?
7664                           "ignore_if_down_event=1\n" : "",
7665                           drv->scan_complete_events ?
7666                           "scan_complete_events=1\n" : "",
7667                           drv->disabled_11b_rates ?
7668                           "disabled_11b_rates=1\n" : "",
7669                           drv->pending_remain_on_chan ?
7670                           "pending_remain_on_chan=1\n" : "",
7671                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7672                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7673                           drv->poll_command_supported ?
7674                           "poll_command_supported=1\n" : "",
7675                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7676                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7677                           drv->retry_auth ? "retry_auth=1\n" : "",
7678                           drv->use_monitor ? "use_monitor=1\n" : "",
7679                           drv->ignore_next_local_disconnect ?
7680                           "ignore_next_local_disconnect=1\n" : "",
7681                           drv->ignore_next_local_deauth ?
7682                           "ignore_next_local_deauth=1\n" : "");
7683         if (os_snprintf_error(end - pos, res))
7684                 return pos - buf;
7685         pos += res;
7686
7687         if (drv->has_capability) {
7688                 res = os_snprintf(pos, end - pos,
7689                                   "capa.key_mgmt=0x%x\n"
7690                                   "capa.enc=0x%x\n"
7691                                   "capa.auth=0x%x\n"
7692                                   "capa.flags=0x%llx\n"
7693                                   "capa.rrm_flags=0x%x\n"
7694                                   "capa.max_scan_ssids=%d\n"
7695                                   "capa.max_sched_scan_ssids=%d\n"
7696                                   "capa.sched_scan_supported=%d\n"
7697                                   "capa.max_match_sets=%d\n"
7698                                   "capa.max_remain_on_chan=%u\n"
7699                                   "capa.max_stations=%u\n"
7700                                   "capa.probe_resp_offloads=0x%x\n"
7701                                   "capa.max_acl_mac_addrs=%u\n"
7702                                   "capa.num_multichan_concurrent=%u\n"
7703                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7704                                   "capa.mac_addr_rand_scan_supported=%d\n"
7705                                   "capa.conc_capab=%u\n"
7706                                   "capa.max_conc_chan_2_4=%u\n"
7707                                   "capa.max_conc_chan_5_0=%u\n"
7708                                   "capa.max_sched_scan_plans=%u\n"
7709                                   "capa.max_sched_scan_plan_interval=%u\n"
7710                                   "capa.max_sched_scan_plan_iterations=%u\n",
7711                                   drv->capa.key_mgmt,
7712                                   drv->capa.enc,
7713                                   drv->capa.auth,
7714                                   (unsigned long long) drv->capa.flags,
7715                                   drv->capa.rrm_flags,
7716                                   drv->capa.max_scan_ssids,
7717                                   drv->capa.max_sched_scan_ssids,
7718                                   drv->capa.sched_scan_supported,
7719                                   drv->capa.max_match_sets,
7720                                   drv->capa.max_remain_on_chan,
7721                                   drv->capa.max_stations,
7722                                   drv->capa.probe_resp_offloads,
7723                                   drv->capa.max_acl_mac_addrs,
7724                                   drv->capa.num_multichan_concurrent,
7725                                   drv->capa.mac_addr_rand_sched_scan_supported,
7726                                   drv->capa.mac_addr_rand_scan_supported,
7727                                   drv->capa.conc_capab,
7728                                   drv->capa.max_conc_chan_2_4,
7729                                   drv->capa.max_conc_chan_5_0,
7730                                   drv->capa.max_sched_scan_plans,
7731                                   drv->capa.max_sched_scan_plan_interval,
7732                                   drv->capa.max_sched_scan_plan_iterations);
7733                 if (os_snprintf_error(end - pos, res))
7734                         return pos - buf;
7735                 pos += res;
7736         }
7737
7738         return pos - buf;
7739 }
7740
7741
7742 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7743 {
7744         if ((settings->head &&
7745              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7746                      settings->head_len, settings->head)) ||
7747             (settings->tail &&
7748              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7749                      settings->tail_len, settings->tail)) ||
7750             (settings->beacon_ies &&
7751              nla_put(msg, NL80211_ATTR_IE,
7752                      settings->beacon_ies_len, settings->beacon_ies)) ||
7753             (settings->proberesp_ies &&
7754              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7755                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7756             (settings->assocresp_ies &&
7757              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7758                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7759             (settings->probe_resp &&
7760              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7761                      settings->probe_resp_len, settings->probe_resp)))
7762                 return -ENOBUFS;
7763
7764         return 0;
7765 }
7766
7767
7768 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7769 {
7770         struct nl_msg *msg;
7771         struct i802_bss *bss = priv;
7772         struct wpa_driver_nl80211_data *drv = bss->drv;
7773         struct nlattr *beacon_csa;
7774         int ret = -ENOBUFS;
7775         int csa_off_len = 0;
7776         int i;
7777
7778         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7779                    settings->cs_count, settings->block_tx,
7780                    settings->freq_params.freq, settings->freq_params.bandwidth,
7781                    settings->freq_params.center_freq1,
7782                    settings->freq_params.center_freq2);
7783
7784         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7785                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7786                 return -EOPNOTSUPP;
7787         }
7788
7789         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7790             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7791                 return -EOPNOTSUPP;
7792
7793         /*
7794          * Remove empty counters, assuming Probe Response and Beacon frame
7795          * counters match. This implementation assumes that there are only two
7796          * counters.
7797          */
7798         if (settings->counter_offset_beacon[0] &&
7799             !settings->counter_offset_beacon[1]) {
7800                 csa_off_len = 1;
7801         } else if (settings->counter_offset_beacon[1] &&
7802                    !settings->counter_offset_beacon[0]) {
7803                 csa_off_len = 1;
7804                 settings->counter_offset_beacon[0] =
7805                         settings->counter_offset_beacon[1];
7806                 settings->counter_offset_presp[0] =
7807                         settings->counter_offset_presp[1];
7808         } else if (settings->counter_offset_beacon[1] &&
7809                    settings->counter_offset_beacon[0]) {
7810                 csa_off_len = 2;
7811         } else {
7812                 wpa_printf(MSG_ERROR, "nl80211: No CSA counters provided");
7813                 return -EINVAL;
7814         }
7815
7816         /* Check CSA counters validity */
7817         if (drv->capa.max_csa_counters &&
7818             csa_off_len > drv->capa.max_csa_counters) {
7819                 wpa_printf(MSG_ERROR,
7820                            "nl80211: Too many CSA counters provided");
7821                 return -EINVAL;
7822         }
7823
7824         if (!settings->beacon_csa.tail)
7825                 return -EINVAL;
7826
7827         for (i = 0; i < csa_off_len; i++) {
7828                 u16 csa_c_off_bcn = settings->counter_offset_beacon[i];
7829                 u16 csa_c_off_presp = settings->counter_offset_presp[i];
7830
7831                 if ((settings->beacon_csa.tail_len <= csa_c_off_bcn) ||
7832                     (settings->beacon_csa.tail[csa_c_off_bcn] !=
7833                      settings->cs_count))
7834                         return -EINVAL;
7835
7836                 if (settings->beacon_csa.probe_resp &&
7837                     ((settings->beacon_csa.probe_resp_len <=
7838                       csa_c_off_presp) ||
7839                      (settings->beacon_csa.probe_resp[csa_c_off_presp] !=
7840                       settings->cs_count)))
7841                         return -EINVAL;
7842         }
7843
7844         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7845             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7846                         settings->cs_count) ||
7847             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7848             (settings->block_tx &&
7849              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7850                 goto error;
7851
7852         /* beacon_after params */
7853         ret = set_beacon_data(msg, &settings->beacon_after);
7854         if (ret)
7855                 goto error;
7856
7857         /* beacon_csa params */
7858         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7859         if (!beacon_csa)
7860                 goto fail;
7861
7862         ret = set_beacon_data(msg, &settings->beacon_csa);
7863         if (ret)
7864                 goto error;
7865
7866         if (nla_put(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7867                     csa_off_len * sizeof(u16),
7868                     settings->counter_offset_beacon) ||
7869             (settings->beacon_csa.probe_resp &&
7870              nla_put(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7871                      csa_off_len * sizeof(u16),
7872                      settings->counter_offset_presp)))
7873                 goto fail;
7874
7875         nla_nest_end(msg, beacon_csa);
7876         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7877         if (ret) {
7878                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7879                            ret, strerror(-ret));
7880         }
7881         return ret;
7882
7883 fail:
7884         ret = -ENOBUFS;
7885 error:
7886         nlmsg_free(msg);
7887         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7888         return ret;
7889 }
7890
7891
7892 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7893                           u8 user_priority, u16 admitted_time)
7894 {
7895         struct i802_bss *bss = priv;
7896         struct wpa_driver_nl80211_data *drv = bss->drv;
7897         struct nl_msg *msg;
7898         int ret;
7899
7900         wpa_printf(MSG_DEBUG,
7901                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7902                    tsid, admitted_time, user_priority);
7903
7904         if (!is_sta_interface(drv->nlmode))
7905                 return -ENOTSUP;
7906
7907         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7908         if (!msg ||
7909             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7910             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7911             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7912             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7913                 nlmsg_free(msg);
7914                 return -ENOBUFS;
7915         }
7916
7917         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7918         if (ret)
7919                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7920                            ret, strerror(-ret));
7921         return ret;
7922 }
7923
7924
7925 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7926 {
7927         struct i802_bss *bss = priv;
7928         struct wpa_driver_nl80211_data *drv = bss->drv;
7929         struct nl_msg *msg;
7930         int ret;
7931
7932         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7933
7934         if (!is_sta_interface(drv->nlmode))
7935                 return -ENOTSUP;
7936
7937         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7938             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7939             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7940                 nlmsg_free(msg);
7941                 return -ENOBUFS;
7942         }
7943
7944         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7945         if (ret)
7946                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7947                            ret, strerror(-ret));
7948         return ret;
7949 }
7950
7951
7952 #ifdef CONFIG_TESTING_OPTIONS
7953 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7954 {
7955         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7956         struct wpabuf *buf = arg;
7957
7958         if (!buf)
7959                 return NL_SKIP;
7960
7961         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7962                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7963                 return NL_SKIP;
7964         }
7965
7966         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7967                         genlmsg_attrlen(gnlh, 0));
7968
7969         return NL_SKIP;
7970 }
7971 #endif /* CONFIG_TESTING_OPTIONS */
7972
7973
7974 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7975 {
7976         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7977         struct nlattr *nl_vendor_reply, *nl;
7978         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7979         struct wpabuf *buf = arg;
7980         int rem;
7981
7982         if (!buf)
7983                 return NL_SKIP;
7984
7985         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7986                   genlmsg_attrlen(gnlh, 0), NULL);
7987         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7988
7989         if (!nl_vendor_reply)
7990                 return NL_SKIP;
7991
7992         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7993                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7994                 return NL_SKIP;
7995         }
7996
7997         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7998                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7999         }
8000
8001         return NL_SKIP;
8002 }
8003
8004
8005 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8006                               unsigned int subcmd, const u8 *data,
8007                               size_t data_len, struct wpabuf *buf)
8008 {
8009         struct i802_bss *bss = priv;
8010         struct wpa_driver_nl80211_data *drv = bss->drv;
8011         struct nl_msg *msg;
8012         int ret;
8013
8014 #ifdef CONFIG_TESTING_OPTIONS
8015         if (vendor_id == 0xffffffff) {
8016                 msg = nlmsg_alloc();
8017                 if (!msg)
8018                         return -ENOMEM;
8019
8020                 nl80211_cmd(drv, msg, 0, subcmd);
8021                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8022                     0)
8023                         goto fail;
8024                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8025                 if (ret)
8026                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8027                                    ret);
8028                 return ret;
8029         }
8030 #endif /* CONFIG_TESTING_OPTIONS */
8031
8032         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
8033             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
8034             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
8035             (data &&
8036              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
8037                 goto fail;
8038
8039         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8040         if (ret)
8041                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8042                            ret);
8043         return ret;
8044
8045 fail:
8046         nlmsg_free(msg);
8047         return -ENOBUFS;
8048 }
8049
8050
8051 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8052                                u8 qos_map_set_len)
8053 {
8054         struct i802_bss *bss = priv;
8055         struct wpa_driver_nl80211_data *drv = bss->drv;
8056         struct nl_msg *msg;
8057         int ret;
8058
8059         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8060                     qos_map_set, qos_map_set_len);
8061
8062         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
8063             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
8064                 nlmsg_free(msg);
8065                 return -ENOBUFS;
8066         }
8067
8068         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8069         if (ret)
8070                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8071
8072         return ret;
8073 }
8074
8075
8076 static int nl80211_set_wowlan(void *priv,
8077                               const struct wowlan_triggers *triggers)
8078 {
8079         struct i802_bss *bss = priv;
8080         struct wpa_driver_nl80211_data *drv = bss->drv;
8081         struct nl_msg *msg;
8082         struct nlattr *wowlan_triggers;
8083         int ret;
8084
8085         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8086
8087         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_SET_WOWLAN)) ||
8088             !(wowlan_triggers = nla_nest_start(msg,
8089                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
8090             (triggers->any &&
8091              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8092             (triggers->disconnect &&
8093              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8094             (triggers->magic_pkt &&
8095              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8096             (triggers->gtk_rekey_failure &&
8097              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8098             (triggers->eap_identity_req &&
8099              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8100             (triggers->four_way_handshake &&
8101              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8102             (triggers->rfkill_release &&
8103              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
8104                 nlmsg_free(msg);
8105                 return -ENOBUFS;
8106         }
8107
8108         nla_nest_end(msg, wowlan_triggers);
8109
8110         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8111         if (ret)
8112                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8113
8114         return ret;
8115 }
8116
8117
8118 #ifdef CONFIG_DRIVER_NL80211_QCA
8119 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8120 {
8121         struct i802_bss *bss = priv;
8122         struct wpa_driver_nl80211_data *drv = bss->drv;
8123         struct nl_msg *msg;
8124         struct nlattr *params;
8125
8126         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8127
8128         if (!drv->roaming_vendor_cmd_avail) {
8129                 wpa_printf(MSG_DEBUG,
8130                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8131                 return -1;
8132         }
8133
8134         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8135             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8136             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8137                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
8138             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8139             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8140                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8141                         QCA_ROAMING_NOT_ALLOWED) ||
8142             (bssid &&
8143              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
8144                 nlmsg_free(msg);
8145                 return -1;
8146         }
8147         nla_nest_end(msg, params);
8148
8149         return send_and_recv_msgs(drv, msg, NULL, NULL);
8150 }
8151 #endif /* CONFIG_DRIVER_NL80211_QCA */
8152
8153
8154 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8155 {
8156         struct i802_bss *bss = priv;
8157         struct wpa_driver_nl80211_data *drv = bss->drv;
8158         int new_addr = addr != NULL;
8159
8160         if (!addr)
8161                 addr = drv->perm_addr;
8162
8163         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8164                 return -1;
8165
8166         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8167         {
8168                 wpa_printf(MSG_DEBUG,
8169                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8170                            bss->ifname, MAC2STR(addr));
8171                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8172                                           1) < 0) {
8173                         wpa_printf(MSG_DEBUG,
8174                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8175                 }
8176                 return -1;
8177         }
8178
8179         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8180                    bss->ifname, MAC2STR(addr));
8181         drv->addr_changed = new_addr;
8182         os_memcpy(bss->addr, addr, ETH_ALEN);
8183
8184         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8185         {
8186                 wpa_printf(MSG_DEBUG,
8187                            "nl80211: Could not restore interface UP after set_mac_addr");
8188         }
8189
8190         return 0;
8191 }
8192
8193
8194 #ifdef CONFIG_MESH
8195
8196 static int wpa_driver_nl80211_init_mesh(void *priv)
8197 {
8198         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8199                 wpa_printf(MSG_INFO,
8200                            "nl80211: Failed to set interface into mesh mode");
8201                 return -1;
8202         }
8203         return 0;
8204 }
8205
8206
8207 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
8208                                size_t mesh_id_len)
8209 {
8210         if (mesh_id) {
8211                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
8212                                   mesh_id, mesh_id_len);
8213                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
8214         }
8215
8216         return 0;
8217 }
8218
8219
8220 static int nl80211_join_mesh(struct i802_bss *bss,
8221                              struct wpa_driver_mesh_join_params *params)
8222 {
8223         struct wpa_driver_nl80211_data *drv = bss->drv;
8224         struct nl_msg *msg;
8225         struct nlattr *container;
8226         int ret = -1;
8227
8228         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8229         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
8230         if (!msg ||
8231             nl80211_put_freq_params(msg, &params->freq) ||
8232             nl80211_put_basic_rates(msg, params->basic_rates) ||
8233             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
8234             nl80211_put_beacon_int(msg, params->beacon_int))
8235                 goto fail;
8236
8237         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8238
8239         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8240         if (!container)
8241                 goto fail;
8242
8243         if (params->ies) {
8244                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8245                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8246                             params->ies))
8247                         goto fail;
8248         }
8249         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8250         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8251                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8252                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8253                         goto fail;
8254         }
8255         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8256             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8257                 goto fail;
8258         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8259             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8260                 goto fail;
8261         nla_nest_end(msg, container);
8262
8263         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8264         if (!container)
8265                 goto fail;
8266
8267         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8268             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8269                 goto fail;
8270         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
8271             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8272                         params->max_peer_links))
8273                 goto fail;
8274
8275         /*
8276          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
8277          * the timer could disconnect stations even in that case.
8278          */
8279         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8280                         params->conf.peer_link_timeout)) {
8281                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8282                 goto fail;
8283         }
8284
8285         nla_nest_end(msg, container);
8286
8287         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8288         msg = NULL;
8289         if (ret) {
8290                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8291                            ret, strerror(-ret));
8292                 goto fail;
8293         }
8294         ret = 0;
8295         bss->freq = params->freq.freq;
8296         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8297
8298 fail:
8299         nlmsg_free(msg);
8300         return ret;
8301 }
8302
8303
8304 static int
8305 wpa_driver_nl80211_join_mesh(void *priv,
8306                              struct wpa_driver_mesh_join_params *params)
8307 {
8308         struct i802_bss *bss = priv;
8309         int ret, timeout;
8310
8311         timeout = params->conf.peer_link_timeout;
8312
8313         /* Disable kernel inactivity timer */
8314         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8315                 params->conf.peer_link_timeout = 0;
8316
8317         ret = nl80211_join_mesh(bss, params);
8318         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8319                 wpa_printf(MSG_DEBUG,
8320                            "nl80211: Mesh join retry for peer_link_timeout");
8321                 /*
8322                  * Old kernel does not support setting
8323                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8324                  * into future from peer_link_timeout.
8325                  */
8326                 params->conf.peer_link_timeout = timeout + 60;
8327                 ret = nl80211_join_mesh(priv, params);
8328         }
8329
8330         params->conf.peer_link_timeout = timeout;
8331         return ret;
8332 }
8333
8334
8335 static int wpa_driver_nl80211_leave_mesh(void *priv)
8336 {
8337         struct i802_bss *bss = priv;
8338         struct wpa_driver_nl80211_data *drv = bss->drv;
8339         struct nl_msg *msg;
8340         int ret;
8341
8342         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8343         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8344         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8345         if (ret) {
8346                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8347                            ret, strerror(-ret));
8348         } else {
8349                 wpa_printf(MSG_DEBUG,
8350                            "nl80211: mesh leave request send successfully");
8351         }
8352
8353         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8354                                         NL80211_IFTYPE_STATION)) {
8355                 wpa_printf(MSG_INFO,
8356                            "nl80211: Failed to set interface into station mode");
8357         }
8358         return ret;
8359 }
8360
8361 #endif /* CONFIG_MESH */
8362
8363
8364 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8365                                       const u8 *ipaddr, int prefixlen,
8366                                       const u8 *addr)
8367 {
8368 #ifdef CONFIG_LIBNL3_ROUTE
8369         struct i802_bss *bss = priv;
8370         struct wpa_driver_nl80211_data *drv = bss->drv;
8371         struct rtnl_neigh *rn;
8372         struct nl_addr *nl_ipaddr = NULL;
8373         struct nl_addr *nl_lladdr = NULL;
8374         int family, addrsize;
8375         int res;
8376
8377         if (!ipaddr || prefixlen == 0 || !addr)
8378                 return -EINVAL;
8379
8380         if (bss->br_ifindex == 0) {
8381                 wpa_printf(MSG_DEBUG,
8382                            "nl80211: bridge must be set before adding an ip neigh to it");
8383                 return -1;
8384         }
8385
8386         if (!drv->rtnl_sk) {
8387                 wpa_printf(MSG_DEBUG,
8388                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8389                 return -1;
8390         }
8391
8392         if (version == 4) {
8393                 family = AF_INET;
8394                 addrsize = 4;
8395         } else if (version == 6) {
8396                 family = AF_INET6;
8397                 addrsize = 16;
8398         } else {
8399                 return -EINVAL;
8400         }
8401
8402         rn = rtnl_neigh_alloc();
8403         if (rn == NULL)
8404                 return -ENOMEM;
8405
8406         /* set the destination ip address for neigh */
8407         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8408         if (nl_ipaddr == NULL) {
8409                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8410                 res = -ENOMEM;
8411                 goto errout;
8412         }
8413         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8414         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8415         if (res) {
8416                 wpa_printf(MSG_DEBUG,
8417                            "nl80211: neigh set destination addr failed");
8418                 goto errout;
8419         }
8420
8421         /* set the corresponding lladdr for neigh */
8422         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8423         if (nl_lladdr == NULL) {
8424                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8425                 res = -ENOMEM;
8426                 goto errout;
8427         }
8428         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8429
8430         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8431         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8432
8433         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8434         if (res) {
8435                 wpa_printf(MSG_DEBUG,
8436                            "nl80211: Adding bridge ip neigh failed: %s",
8437                            strerror(errno));
8438         }
8439 errout:
8440         if (nl_lladdr)
8441                 nl_addr_put(nl_lladdr);
8442         if (nl_ipaddr)
8443                 nl_addr_put(nl_ipaddr);
8444         if (rn)
8445                 rtnl_neigh_put(rn);
8446         return res;
8447 #else /* CONFIG_LIBNL3_ROUTE */
8448         return -1;
8449 #endif /* CONFIG_LIBNL3_ROUTE */
8450 }
8451
8452
8453 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8454                                          const u8 *ipaddr)
8455 {
8456 #ifdef CONFIG_LIBNL3_ROUTE
8457         struct i802_bss *bss = priv;
8458         struct wpa_driver_nl80211_data *drv = bss->drv;
8459         struct rtnl_neigh *rn;
8460         struct nl_addr *nl_ipaddr;
8461         int family, addrsize;
8462         int res;
8463
8464         if (!ipaddr)
8465                 return -EINVAL;
8466
8467         if (version == 4) {
8468                 family = AF_INET;
8469                 addrsize = 4;
8470         } else if (version == 6) {
8471                 family = AF_INET6;
8472                 addrsize = 16;
8473         } else {
8474                 return -EINVAL;
8475         }
8476
8477         if (bss->br_ifindex == 0) {
8478                 wpa_printf(MSG_DEBUG,
8479                            "nl80211: bridge must be set to delete an ip neigh");
8480                 return -1;
8481         }
8482
8483         if (!drv->rtnl_sk) {
8484                 wpa_printf(MSG_DEBUG,
8485                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8486                 return -1;
8487         }
8488
8489         rn = rtnl_neigh_alloc();
8490         if (rn == NULL)
8491                 return -ENOMEM;
8492
8493         /* set the destination ip address for neigh */
8494         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8495         if (nl_ipaddr == NULL) {
8496                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8497                 res = -ENOMEM;
8498                 goto errout;
8499         }
8500         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8501         if (res) {
8502                 wpa_printf(MSG_DEBUG,
8503                            "nl80211: neigh set destination addr failed");
8504                 goto errout;
8505         }
8506
8507         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8508
8509         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8510         if (res) {
8511                 wpa_printf(MSG_DEBUG,
8512                            "nl80211: Deleting bridge ip neigh failed: %s",
8513                            strerror(errno));
8514         }
8515 errout:
8516         if (nl_ipaddr)
8517                 nl_addr_put(nl_ipaddr);
8518         if (rn)
8519                 rtnl_neigh_put(rn);
8520         return res;
8521 #else /* CONFIG_LIBNL3_ROUTE */
8522         return -1;
8523 #endif /* CONFIG_LIBNL3_ROUTE */
8524 }
8525
8526
8527 static int linux_write_system_file(const char *path, unsigned int val)
8528 {
8529         char buf[50];
8530         int fd, len;
8531
8532         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8533         if (os_snprintf_error(sizeof(buf), len))
8534                 return -1;
8535
8536         fd = open(path, O_WRONLY);
8537         if (fd < 0)
8538                 return -1;
8539
8540         if (write(fd, buf, len) < 0) {
8541                 wpa_printf(MSG_DEBUG,
8542                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8543                            path, val);
8544                 close(fd);
8545                 return -1;
8546         }
8547         close(fd);
8548
8549         return 0;
8550 }
8551
8552
8553 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8554 {
8555         switch (attr) {
8556         case DRV_BR_PORT_ATTR_PROXYARP:
8557                 return "proxyarp_wifi";
8558         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8559                 return "hairpin_mode";
8560         }
8561
8562         return NULL;
8563 }
8564
8565
8566 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8567                                        unsigned int val)
8568 {
8569         struct i802_bss *bss = priv;
8570         char path[128];
8571         const char *attr_txt;
8572
8573         attr_txt = drv_br_port_attr_str(attr);
8574         if (attr_txt == NULL)
8575                 return -EINVAL;
8576
8577         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8578                     bss->ifname, attr_txt);
8579
8580         if (linux_write_system_file(path, val))
8581                 return -1;
8582
8583         return 0;
8584 }
8585
8586
8587 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8588 {
8589         switch (param) {
8590         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8591                 return "arp_accept";
8592         default:
8593                 return NULL;
8594         }
8595 }
8596
8597
8598 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8599                                        unsigned int val)
8600 {
8601         struct i802_bss *bss = priv;
8602         char path[128];
8603         const char *param_txt;
8604         int ip_version = 4;
8605
8606         if (param == DRV_BR_MULTICAST_SNOOPING) {
8607                 os_snprintf(path, sizeof(path),
8608                             "/sys/devices/virtual/net/%s/bridge/multicast_snooping",
8609                             bss->brname);
8610                 goto set_val;
8611         }
8612
8613         param_txt = drv_br_net_param_str(param);
8614         if (param_txt == NULL)
8615                 return -EINVAL;
8616
8617         switch (param) {
8618                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8619                         ip_version = 4;
8620                         break;
8621                 default:
8622                         return -EINVAL;
8623         }
8624
8625         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8626                     ip_version, bss->brname, param_txt);
8627
8628 set_val:
8629         if (linux_write_system_file(path, val))
8630                 return -1;
8631
8632         return 0;
8633 }
8634
8635
8636 #ifdef CONFIG_DRIVER_NL80211_QCA
8637
8638 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8639 {
8640         switch (hw_mode) {
8641         case HOSTAPD_MODE_IEEE80211B:
8642                 return QCA_ACS_MODE_IEEE80211B;
8643         case HOSTAPD_MODE_IEEE80211G:
8644                 return QCA_ACS_MODE_IEEE80211G;
8645         case HOSTAPD_MODE_IEEE80211A:
8646                 return QCA_ACS_MODE_IEEE80211A;
8647         case HOSTAPD_MODE_IEEE80211AD:
8648                 return QCA_ACS_MODE_IEEE80211AD;
8649         case HOSTAPD_MODE_IEEE80211ANY:
8650                 return QCA_ACS_MODE_IEEE80211ANY;
8651         default:
8652                 return -1;
8653         }
8654 }
8655
8656
8657 static int add_acs_freq_list(struct nl_msg *msg, const int *freq_list)
8658 {
8659         int i, len, ret;
8660         u32 *freqs;
8661
8662         if (!freq_list)
8663                 return 0;
8664         len = int_array_len(freq_list);
8665         freqs = os_malloc(sizeof(u32) * len);
8666         if (!freqs)
8667                 return -1;
8668         for (i = 0; i < len; i++)
8669                 freqs[i] = freq_list[i];
8670         ret = nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_FREQ_LIST,
8671                       sizeof(u32) * len, freqs);
8672         os_free(freqs);
8673         return ret;
8674 }
8675
8676
8677 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8678 {
8679         struct i802_bss *bss = priv;
8680         struct wpa_driver_nl80211_data *drv = bss->drv;
8681         struct nl_msg *msg;
8682         struct nlattr *data;
8683         int ret;
8684         int mode;
8685
8686         mode = hw_mode_to_qca_acs(params->hw_mode);
8687         if (mode < 0)
8688                 return -1;
8689
8690         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8691             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8692             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8693                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8694             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8695             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8696             (params->ht_enabled &&
8697              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8698             (params->ht40_enabled &&
8699              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED)) ||
8700             (params->vht_enabled &&
8701              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_VHT_ENABLED)) ||
8702             nla_put_u16(msg, QCA_WLAN_VENDOR_ATTR_ACS_CHWIDTH,
8703                         params->ch_width) ||
8704             (params->ch_list_len &&
8705              nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_CH_LIST, params->ch_list_len,
8706                      params->ch_list)) ||
8707             add_acs_freq_list(msg, params->freq_list)) {
8708                 nlmsg_free(msg);
8709                 return -ENOBUFS;
8710         }
8711         nla_nest_end(msg, data);
8712
8713         wpa_printf(MSG_DEBUG,
8714                    "nl80211: ACS Params: HW_MODE: %d HT: %d HT40: %d VHT: %d BW: %d CH_LIST_LEN: %u",
8715                    params->hw_mode, params->ht_enabled, params->ht40_enabled,
8716                    params->vht_enabled, params->ch_width, params->ch_list_len);
8717
8718         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8719         if (ret) {
8720                 wpa_printf(MSG_DEBUG,
8721                            "nl80211: Failed to invoke driver ACS function: %s",
8722                            strerror(errno));
8723         }
8724         return ret;
8725 }
8726
8727
8728 static int nl80211_set_band(void *priv, enum set_band band)
8729 {
8730         struct i802_bss *bss = priv;
8731         struct wpa_driver_nl80211_data *drv = bss->drv;
8732         struct nl_msg *msg;
8733         struct nlattr *data;
8734         int ret;
8735         enum qca_set_band qca_band;
8736
8737         if (!drv->setband_vendor_cmd_avail)
8738                 return -1;
8739
8740         switch (band) {
8741         case WPA_SETBAND_AUTO:
8742                 qca_band = QCA_SETBAND_AUTO;
8743                 break;
8744         case WPA_SETBAND_5G:
8745                 qca_band = QCA_SETBAND_5G;
8746                 break;
8747         case WPA_SETBAND_2G:
8748                 qca_band = QCA_SETBAND_2G;
8749                 break;
8750         default:
8751                 return -1;
8752         }
8753
8754         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8755             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8756             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8757                         QCA_NL80211_VENDOR_SUBCMD_SETBAND) ||
8758             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8759             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_SETBAND_VALUE, qca_band)) {
8760                 nlmsg_free(msg);
8761                 return -ENOBUFS;
8762         }
8763         nla_nest_end(msg, data);
8764
8765         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8766         if (ret) {
8767                 wpa_printf(MSG_DEBUG,
8768                            "nl80211: Driver setband function failed: %s",
8769                            strerror(errno));
8770         }
8771         return ret;
8772 }
8773
8774
8775 struct nl80211_pcl {
8776         unsigned int num;
8777         unsigned int *freq_list;
8778 };
8779
8780 static int preferred_freq_info_handler(struct nl_msg *msg, void *arg)
8781 {
8782         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8783         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8784         struct nl80211_pcl *param = arg;
8785         struct nlattr *nl_vend, *attr;
8786         enum qca_iface_type iface_type;
8787         struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
8788         unsigned int num, max_num;
8789         u32 *freqs;
8790
8791         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8792                   genlmsg_attrlen(gnlh, 0), NULL);
8793
8794         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
8795         if (!nl_vend)
8796                 return NL_SKIP;
8797
8798         nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
8799                   nla_data(nl_vend), nla_len(nl_vend), NULL);
8800
8801         attr = tb_vendor[
8802                 QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE];
8803         if (!attr) {
8804                 wpa_printf(MSG_ERROR, "nl80211: iface_type couldn't be found");
8805                 param->num = 0;
8806                 return NL_SKIP;
8807         }
8808
8809         iface_type = (enum qca_iface_type) nla_get_u32(attr);
8810         wpa_printf(MSG_DEBUG, "nl80211: Driver returned iface_type=%d",
8811                    iface_type);
8812
8813         attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST];
8814         if (!attr) {
8815                 wpa_printf(MSG_ERROR,
8816                            "nl80211: preferred_freq_list couldn't be found");
8817                 param->num = 0;
8818                 return NL_SKIP;
8819         }
8820
8821         /*
8822          * param->num has the maximum number of entries for which there
8823          * is room in the freq_list provided by the caller.
8824          */
8825         freqs = nla_data(attr);
8826         max_num = nla_len(attr) / sizeof(u32);
8827         if (max_num > param->num)
8828                 max_num = param->num;
8829         for (num = 0; num < max_num; num++)
8830                 param->freq_list[num] = freqs[num];
8831         param->num = num;
8832
8833         return NL_SKIP;
8834 }
8835
8836
8837 static int nl80211_get_pref_freq_list(void *priv,
8838                                       enum wpa_driver_if_type if_type,
8839                                       unsigned int *num,
8840                                       unsigned int *freq_list)
8841 {
8842         struct i802_bss *bss = priv;
8843         struct wpa_driver_nl80211_data *drv = bss->drv;
8844         struct nl_msg *msg;
8845         int ret;
8846         unsigned int i;
8847         struct nlattr *params;
8848         struct nl80211_pcl param;
8849         enum qca_iface_type iface_type;
8850
8851         if (!drv->get_pref_freq_list)
8852                 return -1;
8853
8854         switch (if_type) {
8855         case WPA_IF_STATION:
8856                 iface_type = QCA_IFACE_TYPE_STA;
8857                 break;
8858         case WPA_IF_AP_BSS:
8859                 iface_type = QCA_IFACE_TYPE_AP;
8860                 break;
8861         case WPA_IF_P2P_GO:
8862                 iface_type = QCA_IFACE_TYPE_P2P_GO;
8863                 break;
8864         case WPA_IF_P2P_CLIENT:
8865                 iface_type = QCA_IFACE_TYPE_P2P_CLIENT;
8866                 break;
8867         case WPA_IF_IBSS:
8868                 iface_type = QCA_IFACE_TYPE_IBSS;
8869                 break;
8870         case WPA_IF_TDLS:
8871                 iface_type = QCA_IFACE_TYPE_TDLS;
8872                 break;
8873         default:
8874                 return -1;
8875         }
8876
8877         param.num = *num;
8878         param.freq_list = freq_list;
8879
8880         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8881             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8882             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8883             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8884                         QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST) ||
8885             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8886             nla_put_u32(msg,
8887                         QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE,
8888                         iface_type)) {
8889                 wpa_printf(MSG_ERROR,
8890                            "%s: err in adding vendor_cmd and vendor_data",
8891                            __func__);
8892                 nlmsg_free(msg);
8893                 return -1;
8894         }
8895         nla_nest_end(msg, params);
8896
8897         os_memset(freq_list, 0, *num * sizeof(freq_list[0]));
8898         ret = send_and_recv_msgs(drv, msg, preferred_freq_info_handler, &param);
8899         if (ret) {
8900                 wpa_printf(MSG_ERROR,
8901                            "%s: err in send_and_recv_msgs", __func__);
8902                 return ret;
8903         }
8904
8905         *num = param.num;
8906
8907         for (i = 0; i < *num; i++) {
8908                 wpa_printf(MSG_DEBUG, "nl80211: preferred_channel_list[%d]=%d",
8909                            i, freq_list[i]);
8910         }
8911
8912         return 0;
8913 }
8914
8915
8916 static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
8917 {
8918         struct i802_bss *bss = priv;
8919         struct wpa_driver_nl80211_data *drv = bss->drv;
8920         struct nl_msg *msg;
8921         int ret;
8922         struct nlattr *params;
8923
8924         if (!drv->set_prob_oper_freq)
8925                 return -1;
8926
8927         wpa_printf(MSG_DEBUG,
8928                    "nl80211: Set P2P probable operating freq %u for ifindex %d",
8929                    freq, bss->ifindex);
8930
8931         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8932             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8933             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8934                         QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL) ||
8935             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8936             nla_put_u32(msg,
8937                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_IFACE_TYPE,
8938                         QCA_IFACE_TYPE_P2P_CLIENT) ||
8939             nla_put_u32(msg,
8940                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_FREQ,
8941                         freq)) {
8942                 wpa_printf(MSG_ERROR,
8943                            "%s: err in adding vendor_cmd and vendor_data",
8944                            __func__);
8945                 nlmsg_free(msg);
8946                 return -1;
8947         }
8948         nla_nest_end(msg, params);
8949
8950         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8951         msg = NULL;
8952         if (ret) {
8953                 wpa_printf(MSG_ERROR, "%s: err in send_and_recv_msgs",
8954                            __func__);
8955                 return ret;
8956         }
8957         nlmsg_free(msg);
8958         return 0;
8959 }
8960
8961 #endif /* CONFIG_DRIVER_NL80211_QCA */
8962
8963
8964 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8965         .name = "nl80211",
8966         .desc = "Linux nl80211/cfg80211",
8967         .get_bssid = wpa_driver_nl80211_get_bssid,
8968         .get_ssid = wpa_driver_nl80211_get_ssid,
8969         .set_key = driver_nl80211_set_key,
8970         .scan2 = driver_nl80211_scan2,
8971         .sched_scan = wpa_driver_nl80211_sched_scan,
8972         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8973         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8974         .abort_scan = wpa_driver_nl80211_abort_scan,
8975         .deauthenticate = driver_nl80211_deauthenticate,
8976         .authenticate = driver_nl80211_authenticate,
8977         .associate = wpa_driver_nl80211_associate,
8978         .global_init = nl80211_global_init,
8979         .global_deinit = nl80211_global_deinit,
8980         .init2 = wpa_driver_nl80211_init,
8981         .deinit = driver_nl80211_deinit,
8982         .get_capa = wpa_driver_nl80211_get_capa,
8983         .set_operstate = wpa_driver_nl80211_set_operstate,
8984         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8985         .set_country = wpa_driver_nl80211_set_country,
8986         .get_country = wpa_driver_nl80211_get_country,
8987         .set_ap = wpa_driver_nl80211_set_ap,
8988         .set_acl = wpa_driver_nl80211_set_acl,
8989         .if_add = wpa_driver_nl80211_if_add,
8990         .if_remove = driver_nl80211_if_remove,
8991         .send_mlme = driver_nl80211_send_mlme,
8992         .get_hw_feature_data = nl80211_get_hw_feature_data,
8993         .sta_add = wpa_driver_nl80211_sta_add,
8994         .sta_remove = driver_nl80211_sta_remove,
8995         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8996         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8997         .hapd_init = i802_init,
8998         .hapd_deinit = i802_deinit,
8999         .set_wds_sta = i802_set_wds_sta,
9000         .get_seqnum = i802_get_seqnum,
9001         .flush = i802_flush,
9002         .get_inact_sec = i802_get_inact_sec,
9003         .sta_clear_stats = i802_sta_clear_stats,
9004         .set_rts = i802_set_rts,
9005         .set_frag = i802_set_frag,
9006         .set_tx_queue_params = i802_set_tx_queue_params,
9007         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9008         .sta_deauth = i802_sta_deauth,
9009         .sta_disassoc = i802_sta_disassoc,
9010         .read_sta_data = driver_nl80211_read_sta_data,
9011         .set_freq = i802_set_freq,
9012         .send_action = driver_nl80211_send_action,
9013         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9014         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9015         .cancel_remain_on_channel =
9016         wpa_driver_nl80211_cancel_remain_on_channel,
9017         .probe_req_report = driver_nl80211_probe_req_report,
9018         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9019         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9020         .resume = wpa_driver_nl80211_resume,
9021         .signal_monitor = nl80211_signal_monitor,
9022         .signal_poll = nl80211_signal_poll,
9023         .send_frame = nl80211_send_frame,
9024         .set_param = nl80211_set_param,
9025         .get_radio_name = nl80211_get_radio_name,
9026         .add_pmkid = nl80211_add_pmkid,
9027         .remove_pmkid = nl80211_remove_pmkid,
9028         .flush_pmkid = nl80211_flush_pmkid,
9029         .set_rekey_info = nl80211_set_rekey_info,
9030         .poll_client = nl80211_poll_client,
9031         .set_p2p_powersave = nl80211_set_p2p_powersave,
9032         .start_dfs_cac = nl80211_start_radar_detection,
9033         .stop_ap = wpa_driver_nl80211_stop_ap,
9034 #ifdef CONFIG_TDLS
9035         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9036         .tdls_oper = nl80211_tdls_oper,
9037         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
9038         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
9039 #endif /* CONFIG_TDLS */
9040         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9041         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9042         .get_survey = wpa_driver_nl80211_get_survey,
9043         .status = wpa_driver_nl80211_status,
9044         .switch_channel = nl80211_switch_channel,
9045 #ifdef ANDROID_P2P
9046         .set_noa = wpa_driver_set_p2p_noa,
9047         .get_noa = wpa_driver_get_p2p_noa,
9048         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9049 #endif /* ANDROID_P2P */
9050 #ifdef ANDROID
9051 #ifndef ANDROID_LIB_STUB
9052         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9053 #endif /* !ANDROID_LIB_STUB */
9054 #endif /* ANDROID */
9055         .vendor_cmd = nl80211_vendor_cmd,
9056         .set_qos_map = nl80211_set_qos_map,
9057         .set_wowlan = nl80211_set_wowlan,
9058 #ifdef CONFIG_DRIVER_NL80211_QCA
9059         .roaming = nl80211_roaming,
9060 #endif /* CONFIG_DRIVER_NL80211_QCA */
9061         .set_mac_addr = nl80211_set_mac_addr,
9062 #ifdef CONFIG_MESH
9063         .init_mesh = wpa_driver_nl80211_init_mesh,
9064         .join_mesh = wpa_driver_nl80211_join_mesh,
9065         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9066 #endif /* CONFIG_MESH */
9067         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9068         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9069         .br_port_set_attr = wpa_driver_br_port_set_attr,
9070         .br_set_net_param = wpa_driver_br_set_net_param,
9071         .add_tx_ts = nl80211_add_ts,
9072         .del_tx_ts = nl80211_del_ts,
9073 #ifdef CONFIG_DRIVER_NL80211_QCA
9074         .do_acs = wpa_driver_do_acs,
9075         .set_band = nl80211_set_band,
9076         .get_pref_freq_list = nl80211_get_pref_freq_list,
9077         .set_prob_oper_freq = nl80211_set_prob_oper_freq,
9078 #endif /* CONFIG_DRIVER_NL80211_QCA */
9079 };