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