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 #define genl_ctrl_resolve android_genl_ctrl_resolve
  91 #endif /* ANDROID */
  92
  93
  94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  95 {
  96         struct nl_handle *handle;
  97
  98         handle = nl80211_handle_alloc(cb);
  99         if (handle == NULL) {
 100                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 101                            "callbacks (%s)", dbg);
 102                 return NULL;
 103         }
 104
 105         if (genl_connect(handle)) {
 106                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 107                            "netlink (%s)", dbg);
 108                 nl80211_handle_destroy(handle);
 109                 return NULL;
 110         }
 111
 112         return handle;
 113 }
 114
 115
 116 static void nl_destroy_handles(struct nl_handle **handle)
 117 {
 118         if (*handle == NULL)
 119                 return;
 120         nl80211_handle_destroy(*handle);
 121         *handle = NULL;
 122 }
 123
 124
 125 #if __WORDSIZE == 64
 126 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 127 #else
 128 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 129 #endif
 130
 131 static void nl80211_register_eloop_read(struct nl_handle **handle,
 132                                         eloop_sock_handler handler,
 133                                         void *eloop_data)
 134 {
 135 #ifdef CONFIG_LIBNL20
 136         /*
 137          * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
 138          * by default. It is possible to hit that limit in some cases where
 139          * operations are blocked, e.g., with a burst of Deauthentication frames
 140          * to hostapd and STA entry deletion. Try to increase the buffer to make
 141          * this less likely to occur.
 142          */
 143         if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
 144                 wpa_printf(MSG_DEBUG,
 145                            "nl80211: Could not set nl_socket RX buffer size: %s",
 146                            strerror(errno));
 147                 /* continue anyway with the default (smaller) buffer */
 148         }
 149 #endif /* CONFIG_LIBNL20 */
 150
 151         nl_socket_set_nonblocking(*handle);
 152         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 153                                  eloop_data, *handle);
 154         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 155 }
 156
 157
 158 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 159 {
 160         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 161         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 162         nl_destroy_handles(handle);
 163 }
 164
 165
 166 static void nl80211_global_deinit(void *priv);
 167 static void nl80211_check_global(struct nl80211_global *global);
 168
 169 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 170 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 171                                             struct hostapd_freq_params *freq);
 172
 173 static int
 174 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 175                                    const u8 *set_addr, int first,
 176                                    const char *driver_params);
 177 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 178                                   unsigned int freq, unsigned int wait,
 179                                   const u8 *buf, size_t buf_len, u64 *cookie,
 180                                   int no_cck, int no_ack, int offchanok);
 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         };
1191         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1192         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1193                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1194                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1195                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1196                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1197         };
1198         struct wpa_signal_info *sig_change = arg;
1199
1200         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1201                   genlmsg_attrlen(gnlh, 0), NULL);
1202         if (!tb[NL80211_ATTR_STA_INFO] ||
1203             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1204                              tb[NL80211_ATTR_STA_INFO], policy))
1205                 return NL_SKIP;
1206         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1207                 return NL_SKIP;
1208
1209         sig_change->current_signal =
1210                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1211
1212         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1213                 sig_change->avg_signal =
1214                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1215         else
1216                 sig_change->avg_signal = 0;
1217
1218         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1219                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1220                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1221                                      rate_policy)) {
1222                         sig_change->current_txrate = 0;
1223                 } else {
1224                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1225                                 sig_change->current_txrate =
1226                                         nla_get_u16(rinfo[
1227                                              NL80211_RATE_INFO_BITRATE]) * 100;
1228                         }
1229                 }
1230         }
1231
1232         return NL_SKIP;
1233 }
1234
1235
1236 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1237                             struct wpa_signal_info *sig)
1238 {
1239         struct nl_msg *msg;
1240
1241         sig->current_signal = -9999;
1242         sig->current_txrate = 0;
1243
1244         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1245             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1246                 nlmsg_free(msg);
1247                 return -ENOBUFS;
1248         }
1249
1250         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1251 }
1252
1253
1254 static int get_link_noise(struct nl_msg *msg, void *arg)
1255 {
1256         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1257         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1258         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1259         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1260                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1261                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1262         };
1263         struct wpa_signal_info *sig_change = arg;
1264
1265         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1266                   genlmsg_attrlen(gnlh, 0), NULL);
1267
1268         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1269                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1270                 return NL_SKIP;
1271         }
1272
1273         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1274                              tb[NL80211_ATTR_SURVEY_INFO],
1275                              survey_policy)) {
1276                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1277                            "attributes!");
1278                 return NL_SKIP;
1279         }
1280
1281         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1282                 return NL_SKIP;
1283
1284         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1285             sig_change->frequency)
1286                 return NL_SKIP;
1287
1288         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1289                 return NL_SKIP;
1290
1291         sig_change->current_noise =
1292                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1293
1294         return NL_SKIP;
1295 }
1296
1297
1298 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1299                            struct wpa_signal_info *sig_change)
1300 {
1301         struct nl_msg *msg;
1302
1303         sig_change->current_noise = 9999;
1304         sig_change->frequency = drv->assoc_freq;
1305
1306         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1307         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1308 }
1309
1310
1311 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1312                                              void *handle)
1313 {
1314         struct nl_cb *cb = eloop_ctx;
1315         int res;
1316
1317         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1318
1319         res = nl_recvmsgs(handle, cb);
1320         if (res < 0) {
1321                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1322                            __func__, res);
1323         }
1324 }
1325
1326
1327 /**
1328  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1329  * @priv: driver_nl80211 private data
1330  * @alpha2_arg: country to which to switch to
1331  * Returns: 0 on success, -1 on failure
1332  *
1333  * This asks nl80211 to set the regulatory domain for given
1334  * country ISO / IEC alpha2.
1335  */
1336 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1337 {
1338         struct i802_bss *bss = priv;
1339         struct wpa_driver_nl80211_data *drv = bss->drv;
1340         char alpha2[3];
1341         struct nl_msg *msg;
1342
1343         msg = nlmsg_alloc();
1344         if (!msg)
1345                 return -ENOMEM;
1346
1347         alpha2[0] = alpha2_arg[0];
1348         alpha2[1] = alpha2_arg[1];
1349         alpha2[2] = '\0';
1350
1351         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1352             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1353                 nlmsg_free(msg);
1354                 return -EINVAL;
1355         }
1356         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1357                 return -EINVAL;
1358         return 0;
1359 }
1360
1361
1362 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1363 {
1364         char *alpha2 = arg;
1365         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1366         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1367
1368         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1369                   genlmsg_attrlen(gnlh, 0), NULL);
1370         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1371                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1372                 return NL_SKIP;
1373         }
1374         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1375         return NL_SKIP;
1376 }
1377
1378
1379 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1380 {
1381         struct i802_bss *bss = priv;
1382         struct wpa_driver_nl80211_data *drv = bss->drv;
1383         struct nl_msg *msg;
1384         int ret;
1385
1386         msg = nlmsg_alloc();
1387         if (!msg)
1388                 return -ENOMEM;
1389
1390         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1391         alpha2[0] = '\0';
1392         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1393         if (!alpha2[0])
1394                 ret = -1;
1395
1396         return ret;
1397 }
1398
1399
1400 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1401 {
1402         int ret;
1403
1404         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1405         if (global->nl_cb == NULL) {
1406                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1407                            "callbacks");
1408                 return -1;
1409         }
1410
1411         global->nl = nl_create_handle(global->nl_cb, "nl");
1412         if (global->nl == NULL)
1413                 goto err;
1414
1415         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1416         if (global->nl80211_id < 0) {
1417                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1418                            "found");
1419                 goto err;
1420         }
1421
1422         global->nl_event = nl_create_handle(global->nl_cb, "event");
1423         if (global->nl_event == NULL)
1424                 goto err;
1425
1426         ret = nl_get_multicast_id(global, "nl80211", "scan");
1427         if (ret >= 0)
1428                 ret = nl_socket_add_membership(global->nl_event, ret);
1429         if (ret < 0) {
1430                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1431                            "membership for scan events: %d (%s)",
1432                            ret, strerror(-ret));
1433                 goto err;
1434         }
1435
1436         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1437         if (ret >= 0)
1438                 ret = nl_socket_add_membership(global->nl_event, ret);
1439         if (ret < 0) {
1440                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1441                            "membership for mlme events: %d (%s)",
1442                            ret, strerror(-ret));
1443                 goto err;
1444         }
1445
1446         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1447         if (ret >= 0)
1448                 ret = nl_socket_add_membership(global->nl_event, ret);
1449         if (ret < 0) {
1450                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1451                            "membership for regulatory events: %d (%s)",
1452                            ret, strerror(-ret));
1453                 /* Continue without regulatory events */
1454         }
1455
1456         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1457         if (ret >= 0)
1458                 ret = nl_socket_add_membership(global->nl_event, ret);
1459         if (ret < 0) {
1460                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1461                            "membership for vendor events: %d (%s)",
1462                            ret, strerror(-ret));
1463                 /* Continue without vendor events */
1464         }
1465
1466         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1467                   no_seq_check, NULL);
1468         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1469                   process_global_event, global);
1470
1471         nl80211_register_eloop_read(&global->nl_event,
1472                                     wpa_driver_nl80211_event_receive,
1473                                     global->nl_cb);
1474
1475         return 0;
1476
1477 err:
1478         nl_destroy_handles(&global->nl_event);
1479         nl_destroy_handles(&global->nl);
1480         nl_cb_put(global->nl_cb);
1481         global->nl_cb = NULL;
1482         return -1;
1483 }
1484
1485
1486 static void nl80211_check_global(struct nl80211_global *global)
1487 {
1488         struct nl_handle *handle;
1489         const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL };
1490         int ret;
1491         unsigned int i;
1492
1493         /*
1494          * Try to re-add memberships to handle case of cfg80211 getting reloaded
1495          * and all registration having been cleared.
1496          */
1497         handle = (void *) (((intptr_t) global->nl_event) ^
1498                            ELOOP_SOCKET_INVALID);
1499
1500         for (i = 0; groups[i]; i++) {
1501                 ret = nl_get_multicast_id(global, "nl80211", groups[i]);
1502                 if (ret >= 0)
1503                         ret = nl_socket_add_membership(handle, ret);
1504                 if (ret < 0) {
1505                         wpa_printf(MSG_INFO,
1506                                    "nl80211: Could not re-add multicast membership for %s events: %d (%s)",
1507                                    groups[i], ret, strerror(-ret));
1508                 }
1509         }
1510 }
1511
1512
1513 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1514 {
1515         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1516         /*
1517          * This may be for any interface; use ifdown event to disable
1518          * interface.
1519          */
1520 }
1521
1522
1523 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1524 {
1525         struct wpa_driver_nl80211_data *drv = ctx;
1526         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1527         if (i802_set_iface_flags(drv->first_bss, 1)) {
1528                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1529                            "after rfkill unblock");
1530                 return;
1531         }
1532         /* rtnetlink ifup handler will report interface as enabled */
1533 }
1534
1535
1536 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1537                                                       void *eloop_ctx,
1538                                                       void *handle)
1539 {
1540         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1541         u8 data[2048];
1542         struct msghdr msg;
1543         struct iovec entry;
1544         u8 control[512];
1545         struct cmsghdr *cmsg;
1546         int res, found_ee = 0, found_wifi = 0, acked = 0;
1547         union wpa_event_data event;
1548
1549         memset(&msg, 0, sizeof(msg));
1550         msg.msg_iov = &entry;
1551         msg.msg_iovlen = 1;
1552         entry.iov_base = data;
1553         entry.iov_len = sizeof(data);
1554         msg.msg_control = &control;
1555         msg.msg_controllen = sizeof(control);
1556
1557         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1558         /* if error or not fitting 802.3 header, return */
1559         if (res < 14)
1560                 return;
1561
1562         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1563         {
1564                 if (cmsg->cmsg_level == SOL_SOCKET &&
1565                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1566                         int *ack;
1567
1568                         found_wifi = 1;
1569                         ack = (void *)CMSG_DATA(cmsg);
1570                         acked = *ack;
1571                 }
1572
1573                 if (cmsg->cmsg_level == SOL_PACKET &&
1574                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1575                         struct sock_extended_err *err =
1576                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1577
1578                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1579                                 found_ee = 1;
1580                 }
1581         }
1582
1583         if (!found_ee || !found_wifi)
1584                 return;
1585
1586         memset(&event, 0, sizeof(event));
1587         event.eapol_tx_status.dst = data;
1588         event.eapol_tx_status.data = data + 14;
1589         event.eapol_tx_status.data_len = res - 14;
1590         event.eapol_tx_status.ack = acked;
1591         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1592 }
1593
1594
1595 static int nl80211_init_bss(struct i802_bss *bss)
1596 {
1597         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1598         if (!bss->nl_cb)
1599                 return -1;
1600
1601         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1602                   no_seq_check, NULL);
1603         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1604                   process_bss_event, bss);
1605
1606         return 0;
1607 }
1608
1609
1610 static void nl80211_destroy_bss(struct i802_bss *bss)
1611 {
1612         nl_cb_put(bss->nl_cb);
1613         bss->nl_cb = NULL;
1614 }
1615
1616
1617 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1618                                           void *global_priv, int hostapd,
1619                                           const u8 *set_addr,
1620                                           const char *driver_params)
1621 {
1622         struct wpa_driver_nl80211_data *drv;
1623         struct rfkill_config *rcfg;
1624         struct i802_bss *bss;
1625
1626         if (global_priv == NULL)
1627                 return NULL;
1628         drv = os_zalloc(sizeof(*drv));
1629         if (drv == NULL)
1630                 return NULL;
1631         drv->global = global_priv;
1632         drv->ctx = ctx;
1633         drv->hostapd = !!hostapd;
1634         drv->eapol_sock = -1;
1635
1636         /*
1637          * There is no driver capability flag for this, so assume it is
1638          * supported and disable this on first attempt to use if the driver
1639          * rejects the command due to missing support.
1640          */
1641         drv->set_rekey_offload = 1;
1642
1643         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1644         drv->if_indices = drv->default_if_indices;
1645
1646         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1647         if (!drv->first_bss) {
1648                 os_free(drv);
1649                 return NULL;
1650         }
1651         bss = drv->first_bss;
1652         bss->drv = drv;
1653         bss->ctx = ctx;
1654
1655         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1656         drv->monitor_ifidx = -1;
1657         drv->monitor_sock = -1;
1658         drv->eapol_tx_sock = -1;
1659         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1660
1661         if (nl80211_init_bss(bss))
1662                 goto failed;
1663
1664         rcfg = os_zalloc(sizeof(*rcfg));
1665         if (rcfg == NULL)
1666                 goto failed;
1667         rcfg->ctx = drv;
1668         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1669         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1670         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1671         drv->rfkill = rfkill_init(rcfg);
1672         if (drv->rfkill == NULL) {
1673                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1674                 os_free(rcfg);
1675         }
1676
1677         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1678                 drv->start_iface_up = 1;
1679
1680         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1681                 goto failed;
1682
1683         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1684         if (drv->eapol_tx_sock < 0)
1685                 goto failed;
1686
1687         if (drv->data_tx_status) {
1688                 int enabled = 1;
1689
1690                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1691                                &enabled, sizeof(enabled)) < 0) {
1692                         wpa_printf(MSG_DEBUG,
1693                                 "nl80211: wifi status sockopt failed\n");
1694                         drv->data_tx_status = 0;
1695                         if (!drv->use_monitor)
1696                                 drv->capa.flags &=
1697                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1698                 } else {
1699                         eloop_register_read_sock(drv->eapol_tx_sock,
1700                                 wpa_driver_nl80211_handle_eapol_tx_status,
1701                                 drv, NULL);
1702                 }
1703         }
1704
1705         if (drv->global) {
1706                 nl80211_check_global(drv->global);
1707                 dl_list_add(&drv->global->interfaces, &drv->list);
1708                 drv->in_interface_list = 1;
1709         }
1710
1711         return bss;
1712
1713 failed:
1714         wpa_driver_nl80211_deinit(bss);
1715         return NULL;
1716 }
1717
1718
1719 /**
1720  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1721  * @ctx: context to be used when calling wpa_supplicant functions,
1722  * e.g., wpa_supplicant_event()
1723  * @ifname: interface name, e.g., wlan0
1724  * @global_priv: private driver global data from global_init()
1725  * Returns: Pointer to private data, %NULL on failure
1726  */
1727 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1728                                       void *global_priv)
1729 {
1730         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1731                                            NULL);
1732 }
1733
1734
1735 static int nl80211_register_frame(struct i802_bss *bss,
1736                                   struct nl_handle *nl_handle,
1737                                   u16 type, const u8 *match, size_t match_len)
1738 {
1739         struct wpa_driver_nl80211_data *drv = bss->drv;
1740         struct nl_msg *msg;
1741         int ret;
1742         char buf[30];
1743
1744         buf[0] = '\0';
1745         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1746         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1747                    type, fc2str(type), nl_handle, buf);
1748
1749         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1750             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1751             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1752                 nlmsg_free(msg);
1753                 return -1;
1754         }
1755
1756         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1757         if (ret) {
1758                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1759                            "failed (type=%u): ret=%d (%s)",
1760                            type, ret, strerror(-ret));
1761                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1762                             match, match_len);
1763         }
1764         return ret;
1765 }
1766
1767
1768 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1769 {
1770         if (bss->nl_mgmt) {
1771                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1772                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1773                 return -1;
1774         }
1775
1776         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1777         if (bss->nl_mgmt == NULL)
1778                 return -1;
1779
1780         return 0;
1781 }
1782
1783
1784 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1785 {
1786         nl80211_register_eloop_read(&bss->nl_mgmt,
1787                                     wpa_driver_nl80211_event_receive,
1788                                     bss->nl_cb);
1789 }
1790
1791
1792 static int nl80211_register_action_frame(struct i802_bss *bss,
1793                                          const u8 *match, size_t match_len)
1794 {
1795         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1796         return nl80211_register_frame(bss, bss->nl_mgmt,
1797                                       type, match, match_len);
1798 }
1799
1800
1801 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1802 {
1803         struct wpa_driver_nl80211_data *drv = bss->drv;
1804         int ret = 0;
1805
1806         if (nl80211_alloc_mgmt_handle(bss))
1807                 return -1;
1808         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1809                    "handle %p", bss->nl_mgmt);
1810
1811         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1812                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1813
1814                 /* register for any AUTH message */
1815                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1816         }
1817
1818 #ifdef CONFIG_INTERWORKING
1819         /* QoS Map Configure */
1820         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1821                 ret = -1;
1822 #endif /* CONFIG_INTERWORKING */
1823 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1824         /* GAS Initial Request */
1825         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1826                 ret = -1;
1827         /* GAS Initial Response */
1828         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1829                 ret = -1;
1830         /* GAS Comeback Request */
1831         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1832                 ret = -1;
1833         /* GAS Comeback Response */
1834         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1835                 ret = -1;
1836         /* Protected GAS Initial Request */
1837         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1838                 ret = -1;
1839         /* Protected GAS Initial Response */
1840         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1841                 ret = -1;
1842         /* Protected GAS Comeback Request */
1843         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1844                 ret = -1;
1845         /* Protected GAS Comeback Response */
1846         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1847                 ret = -1;
1848 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1849 #ifdef CONFIG_P2P
1850         /* P2P Public Action */
1851         if (nl80211_register_action_frame(bss,
1852                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1853                                           6) < 0)
1854                 ret = -1;
1855         /* P2P Action */
1856         if (nl80211_register_action_frame(bss,
1857                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1858                                           5) < 0)
1859                 ret = -1;
1860 #endif /* CONFIG_P2P */
1861 #ifdef CONFIG_IEEE80211W
1862         /* SA Query Response */
1863         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1864                 ret = -1;
1865 #endif /* CONFIG_IEEE80211W */
1866 #ifdef CONFIG_TDLS
1867         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1868                 /* TDLS Discovery Response */
1869                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1870                     0)
1871                         ret = -1;
1872         }
1873 #endif /* CONFIG_TDLS */
1874
1875         /* FT Action frames */
1876         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1877                 ret = -1;
1878         else
1879                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1880                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1881
1882         /* WNM - BSS Transition Management Request */
1883         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1884                 ret = -1;
1885         /* WNM-Sleep Mode Response */
1886         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1887                 ret = -1;
1888
1889 #ifdef CONFIG_HS20
1890         /* WNM-Notification */
1891         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1892                 ret = -1;
1893 #endif /* CONFIG_HS20 */
1894
1895         /* WMM-AC ADDTS Response */
1896         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1897                 ret = -1;
1898
1899         /* WMM-AC DELTS */
1900         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1901                 ret = -1;
1902
1903         /* Radio Measurement - Neighbor Report Response */
1904         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1905                 ret = -1;
1906
1907         /* Radio Measurement - Link Measurement Request */
1908         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1909             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1910                 ret = -1;
1911
1912         nl80211_mgmt_handle_register_eloop(bss);
1913
1914         return ret;
1915 }
1916
1917
1918 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1919 {
1920         int ret = 0;
1921
1922         if (nl80211_alloc_mgmt_handle(bss))
1923                 return -1;
1924
1925         wpa_printf(MSG_DEBUG,
1926                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1927                    bss->nl_mgmt);
1928
1929         /* Auth frames for mesh SAE */
1930         if (nl80211_register_frame(bss, bss->nl_mgmt,
1931                                    (WLAN_FC_TYPE_MGMT << 2) |
1932                                    (WLAN_FC_STYPE_AUTH << 4),
1933                                    NULL, 0) < 0)
1934                 ret = -1;
1935
1936         /* Mesh peering open */
1937         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1938                 ret = -1;
1939         /* Mesh peering confirm */
1940         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1941                 ret = -1;
1942         /* Mesh peering close */
1943         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1944                 ret = -1;
1945
1946         nl80211_mgmt_handle_register_eloop(bss);
1947
1948         return ret;
1949 }
1950
1951
1952 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1953 {
1954         struct nl_msg *msg;
1955         int ret;
1956
1957         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1958         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1959         if (ret) {
1960                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1961                            "failed: ret=%d (%s)",
1962                            ret, strerror(-ret));
1963         }
1964         return ret;
1965 }
1966
1967
1968 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1969 {
1970         static const int stypes[] = {
1971                 WLAN_FC_STYPE_AUTH,
1972                 WLAN_FC_STYPE_ASSOC_REQ,
1973                 WLAN_FC_STYPE_REASSOC_REQ,
1974                 WLAN_FC_STYPE_DISASSOC,
1975                 WLAN_FC_STYPE_DEAUTH,
1976                 WLAN_FC_STYPE_ACTION,
1977                 WLAN_FC_STYPE_PROBE_REQ,
1978 /* Beacon doesn't work as mac80211 doesn't currently allow
1979  * it, but it wouldn't really be the right thing anyway as
1980  * it isn't per interface ... maybe just dump the scan
1981  * results periodically for OLBC?
1982  */
1983                 /* WLAN_FC_STYPE_BEACON, */
1984         };
1985         unsigned int i;
1986
1987         if (nl80211_alloc_mgmt_handle(bss))
1988                 return -1;
1989         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1990                    "handle %p", bss->nl_mgmt);
1991
1992         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
1993                 if (nl80211_register_frame(bss, bss->nl_mgmt,
1994                                            (WLAN_FC_TYPE_MGMT << 2) |
1995                                            (stypes[i] << 4),
1996                                            NULL, 0) < 0) {
1997                         goto out_err;
1998                 }
1999         }
2000
2001         if (nl80211_register_spurious_class3(bss))
2002                 goto out_err;
2003
2004         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2005                 goto out_err;
2006
2007         nl80211_mgmt_handle_register_eloop(bss);
2008         return 0;
2009
2010 out_err:
2011         nl_destroy_handles(&bss->nl_mgmt);
2012         return -1;
2013 }
2014
2015
2016 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2017 {
2018         if (nl80211_alloc_mgmt_handle(bss))
2019                 return -1;
2020         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2021                    "handle %p (device SME)", bss->nl_mgmt);
2022
2023         if (nl80211_register_frame(bss, bss->nl_mgmt,
2024                                    (WLAN_FC_TYPE_MGMT << 2) |
2025                                    (WLAN_FC_STYPE_ACTION << 4),
2026                                    NULL, 0) < 0)
2027                 goto out_err;
2028
2029         nl80211_mgmt_handle_register_eloop(bss);
2030         return 0;
2031
2032 out_err:
2033         nl_destroy_handles(&bss->nl_mgmt);
2034         return -1;
2035 }
2036
2037
2038 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2039 {
2040         if (bss->nl_mgmt == NULL)
2041                 return;
2042         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2043                    "(%s)", bss->nl_mgmt, reason);
2044         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2045
2046         nl80211_put_wiphy_data_ap(bss);
2047 }
2048
2049
2050 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2051 {
2052         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2053 }
2054
2055
2056 static void nl80211_del_p2pdev(struct i802_bss *bss)
2057 {
2058         struct nl_msg *msg;
2059         int ret;
2060
2061         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2062         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2063
2064         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2065                    bss->ifname, (long long unsigned int) bss->wdev_id,
2066                    strerror(-ret));
2067 }
2068
2069
2070 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2071 {
2072         struct nl_msg *msg;
2073         int ret;
2074
2075         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2076                               NL80211_CMD_STOP_P2P_DEVICE);
2077         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2078
2079         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2080                    start ? "Start" : "Stop",
2081                    bss->ifname, (long long unsigned int) bss->wdev_id,
2082                    strerror(-ret));
2083         return ret;
2084 }
2085
2086
2087 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2088 {
2089         enum nl80211_iftype nlmode;
2090
2091         nlmode = nl80211_get_ifmode(bss);
2092         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2093                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2094                                              bss->ifname, up);
2095         }
2096
2097         /* P2P Device has start/stop which is equivalent */
2098         return nl80211_set_p2pdev(bss, up);
2099 }
2100
2101
2102 #ifdef CONFIG_TESTING_OPTIONS
2103 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2104 {
2105         /* struct wpa_driver_nl80211_data *drv = arg; */
2106         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2107         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2108
2109
2110         wpa_printf(MSG_DEBUG,
2111                    "nl80211: QCA vendor test command response received");
2112
2113         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2114                   genlmsg_attrlen(gnlh, 0), NULL);
2115         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2116                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2117                 return NL_SKIP;
2118         }
2119
2120         wpa_hexdump(MSG_DEBUG,
2121                     "nl80211: Received QCA vendor test command response",
2122                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2123                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2124
2125         return NL_SKIP;
2126 }
2127 #endif /* CONFIG_TESTING_OPTIONS */
2128
2129
2130 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2131 {
2132 #ifdef CONFIG_TESTING_OPTIONS
2133         struct nl_msg *msg;
2134         struct nlattr *params;
2135         int ret;
2136
2137         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2138             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2139             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2140                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2141             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2142             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2143                 nlmsg_free(msg);
2144                 return;
2145         }
2146         nla_nest_end(msg, params);
2147
2148         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2149         wpa_printf(MSG_DEBUG,
2150                    "nl80211: QCA vendor test command returned %d (%s)",
2151                    ret, strerror(-ret));
2152 #endif /* CONFIG_TESTING_OPTIONS */
2153 }
2154
2155
2156 static int
2157 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2158                                    const u8 *set_addr, int first,
2159                                    const char *driver_params)
2160 {
2161         struct i802_bss *bss = drv->first_bss;
2162         int send_rfkill_event = 0;
2163         enum nl80211_iftype nlmode;
2164
2165         drv->ifindex = if_nametoindex(bss->ifname);
2166         bss->ifindex = drv->ifindex;
2167         bss->wdev_id = drv->global->if_add_wdevid;
2168         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2169
2170         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2171         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2172         drv->global->if_add_wdevid_set = 0;
2173
2174         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2175                 bss->static_ap = 1;
2176
2177         if (wpa_driver_nl80211_capa(drv))
2178                 return -1;
2179
2180         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2181                 return -1;
2182
2183         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2184                    bss->ifname, drv->phyname);
2185
2186         if (set_addr &&
2187             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2188              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2189                                 set_addr)))
2190                 return -1;
2191
2192         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2193                 drv->start_mode_ap = 1;
2194
2195         if (drv->hostapd || bss->static_ap)
2196                 nlmode = NL80211_IFTYPE_AP;
2197         else if (bss->if_dynamic)
2198                 nlmode = nl80211_get_ifmode(bss);
2199         else
2200                 nlmode = NL80211_IFTYPE_STATION;
2201
2202         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2203                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2204                 return -1;
2205         }
2206
2207         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2208                 nl80211_get_macaddr(bss);
2209
2210         if (!rfkill_is_blocked(drv->rfkill)) {
2211                 int ret = i802_set_iface_flags(bss, 1);
2212                 if (ret) {
2213                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2214                                    "interface '%s' UP", bss->ifname);
2215                         return ret;
2216                 }
2217                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2218                         return ret;
2219         } else {
2220                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2221                            "interface '%s' due to rfkill", bss->ifname);
2222                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2223                         return 0;
2224                 drv->if_disabled = 1;
2225                 send_rfkill_event = 1;
2226         }
2227
2228         if (!drv->hostapd)
2229                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2230                                        1, IF_OPER_DORMANT);
2231
2232         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2233                                bss->addr))
2234                 return -1;
2235         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2236
2237         if (send_rfkill_event) {
2238                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2239                                        drv, drv->ctx);
2240         }
2241
2242         if (drv->vendor_cmd_test_avail)
2243                 qca_vendor_test(drv);
2244
2245         return 0;
2246 }
2247
2248
2249 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2250 {
2251         struct nl_msg *msg;
2252
2253         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2254                    drv->ifindex);
2255         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2256         return send_and_recv_msgs(drv, msg, NULL, NULL);
2257 }
2258
2259
2260 /**
2261  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2262  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2263  *
2264  * Shut down driver interface and processing of driver events. Free
2265  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2266  */
2267 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2268 {
2269         struct wpa_driver_nl80211_data *drv = bss->drv;
2270
2271         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2272                    bss->ifname, drv->disabled_11b_rates);
2273
2274         bss->in_deinit = 1;
2275         if (drv->data_tx_status)
2276                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2277         if (drv->eapol_tx_sock >= 0)
2278                 close(drv->eapol_tx_sock);
2279
2280         if (bss->nl_preq)
2281                 wpa_driver_nl80211_probe_req_report(bss, 0);
2282         if (bss->added_if_into_bridge) {
2283                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2284                                     bss->ifname) < 0)
2285                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2286                                    "interface %s from bridge %s: %s",
2287                                    bss->ifname, bss->brname, strerror(errno));
2288                 if (drv->rtnl_sk)
2289                         nl80211_handle_destroy(drv->rtnl_sk);
2290         }
2291         if (bss->added_bridge) {
2292                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2293                                           0) < 0)
2294                         wpa_printf(MSG_INFO,
2295                                    "nl80211: Could not set bridge %s down",
2296                                    bss->brname);
2297                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2298                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2299                                    "bridge %s: %s",
2300                                    bss->brname, strerror(errno));
2301         }
2302
2303         nl80211_remove_monitor_interface(drv);
2304
2305         if (is_ap_interface(drv->nlmode))
2306                 wpa_driver_nl80211_del_beacon(drv);
2307
2308         if (drv->eapol_sock >= 0) {
2309                 eloop_unregister_read_sock(drv->eapol_sock);
2310                 close(drv->eapol_sock);
2311         }
2312
2313         if (drv->if_indices != drv->default_if_indices)
2314                 os_free(drv->if_indices);
2315
2316         if (drv->disabled_11b_rates)
2317                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2318
2319         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2320                                IF_OPER_UP);
2321         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2322         rfkill_deinit(drv->rfkill);
2323
2324         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2325
2326         if (!drv->start_iface_up)
2327                 (void) i802_set_iface_flags(bss, 0);
2328
2329         if (drv->addr_changed) {
2330                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2331                                           0) < 0) {
2332                         wpa_printf(MSG_DEBUG,
2333                                    "nl80211: Could not set interface down to restore permanent MAC address");
2334                 }
2335                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2336                                        drv->perm_addr) < 0) {
2337                         wpa_printf(MSG_DEBUG,
2338                                    "nl80211: Could not restore permanent MAC address");
2339                 }
2340         }
2341
2342         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2343                 if (!drv->hostapd || !drv->start_mode_ap)
2344                         wpa_driver_nl80211_set_mode(bss,
2345                                                     NL80211_IFTYPE_STATION);
2346                 nl80211_mgmt_unsubscribe(bss, "deinit");
2347         } else {
2348                 nl80211_mgmt_unsubscribe(bss, "deinit");
2349                 nl80211_del_p2pdev(bss);
2350         }
2351
2352         nl80211_destroy_bss(drv->first_bss);
2353
2354         os_free(drv->filter_ssids);
2355
2356         os_free(drv->auth_ie);
2357
2358         if (drv->in_interface_list)
2359                 dl_list_del(&drv->list);
2360
2361         os_free(drv->extended_capa);
2362         os_free(drv->extended_capa_mask);
2363         os_free(drv->first_bss);
2364         os_free(drv);
2365 }
2366
2367
2368 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2369 {
2370         switch (alg) {
2371         case WPA_ALG_WEP:
2372                 if (key_len == 5)
2373                         return WLAN_CIPHER_SUITE_WEP40;
2374                 return WLAN_CIPHER_SUITE_WEP104;
2375         case WPA_ALG_TKIP:
2376                 return WLAN_CIPHER_SUITE_TKIP;
2377         case WPA_ALG_CCMP:
2378                 return WLAN_CIPHER_SUITE_CCMP;
2379         case WPA_ALG_GCMP:
2380                 return WLAN_CIPHER_SUITE_GCMP;
2381         case WPA_ALG_CCMP_256:
2382                 return WLAN_CIPHER_SUITE_CCMP_256;
2383         case WPA_ALG_GCMP_256:
2384                 return WLAN_CIPHER_SUITE_GCMP_256;
2385         case WPA_ALG_IGTK:
2386                 return WLAN_CIPHER_SUITE_AES_CMAC;
2387         case WPA_ALG_BIP_GMAC_128:
2388                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2389         case WPA_ALG_BIP_GMAC_256:
2390                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2391         case WPA_ALG_BIP_CMAC_256:
2392                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2393         case WPA_ALG_SMS4:
2394                 return WLAN_CIPHER_SUITE_SMS4;
2395         case WPA_ALG_KRK:
2396                 return WLAN_CIPHER_SUITE_KRK;
2397         case WPA_ALG_NONE:
2398         case WPA_ALG_PMK:
2399                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2400                            alg);
2401                 return 0;
2402         }
2403
2404         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2405                    alg);
2406         return 0;
2407 }
2408
2409
2410 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2411 {
2412         switch (cipher) {
2413         case WPA_CIPHER_CCMP_256:
2414                 return WLAN_CIPHER_SUITE_CCMP_256;
2415         case WPA_CIPHER_GCMP_256:
2416                 return WLAN_CIPHER_SUITE_GCMP_256;
2417         case WPA_CIPHER_CCMP:
2418                 return WLAN_CIPHER_SUITE_CCMP;
2419         case WPA_CIPHER_GCMP:
2420                 return WLAN_CIPHER_SUITE_GCMP;
2421         case WPA_CIPHER_TKIP:
2422                 return WLAN_CIPHER_SUITE_TKIP;
2423         case WPA_CIPHER_WEP104:
2424                 return WLAN_CIPHER_SUITE_WEP104;
2425         case WPA_CIPHER_WEP40:
2426                 return WLAN_CIPHER_SUITE_WEP40;
2427         case WPA_CIPHER_GTK_NOT_USED:
2428                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2429         }
2430
2431         return 0;
2432 }
2433
2434
2435 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2436                                        int max_suites)
2437 {
2438         int num_suites = 0;
2439
2440         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2441                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2442         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2443                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2444         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2445                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2446         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2447                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2448         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2449                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2450         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2451                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2452         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2453                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2454
2455         return num_suites;
2456 }
2457
2458
2459 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2460                                   const u8 *key, size_t key_len)
2461 {
2462         struct nl_msg *msg;
2463         int ret;
2464
2465         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2466                 return 0;
2467
2468         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2469             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2470             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2471                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2472             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2473                 nl80211_nlmsg_clear(msg);
2474                 nlmsg_free(msg);
2475                 return -1;
2476         }
2477         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2478         if (ret) {
2479                 wpa_printf(MSG_DEBUG,
2480                            "nl80211: Key management set key failed: ret=%d (%s)",
2481                            ret, strerror(-ret));
2482         }
2483
2484         return ret;
2485 }
2486
2487
2488 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2489                                       enum wpa_alg alg, const u8 *addr,
2490                                       int key_idx, int set_tx,
2491                                       const u8 *seq, size_t seq_len,
2492                                       const u8 *key, size_t key_len)
2493 {
2494         struct wpa_driver_nl80211_data *drv = bss->drv;
2495         int ifindex;
2496         struct nl_msg *msg;
2497         int ret;
2498         int tdls = 0;
2499
2500         /* Ignore for P2P Device */
2501         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2502                 return 0;
2503
2504         ifindex = if_nametoindex(ifname);
2505         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2506                    "set_tx=%d seq_len=%lu key_len=%lu",
2507                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2508                    (unsigned long) seq_len, (unsigned long) key_len);
2509 #ifdef CONFIG_TDLS
2510         if (key_idx == -1) {
2511                 key_idx = 0;
2512                 tdls = 1;
2513         }
2514 #endif /* CONFIG_TDLS */
2515
2516         if (alg == WPA_ALG_PMK &&
2517             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2518                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2519                            __func__);
2520                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2521                 return ret;
2522         }
2523
2524         if (alg == WPA_ALG_NONE) {
2525                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2526                 if (!msg)
2527                         return -ENOBUFS;
2528         } else {
2529                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2530                 if (!msg ||
2531                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2532                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
2533                                 wpa_alg_to_cipher_suite(alg, key_len)))
2534                         goto fail;
2535                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2536         }
2537
2538         if (seq && seq_len) {
2539                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2540                         goto fail;
2541                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2542         }
2543
2544         if (addr && !is_broadcast_ether_addr(addr)) {
2545                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2546                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2547                         goto fail;
2548
2549                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2550                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2551                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2552                                         NL80211_KEYTYPE_GROUP))
2553                                 goto fail;
2554                 }
2555         } else if (addr && is_broadcast_ether_addr(addr)) {
2556                 struct nlattr *types;
2557
2558                 wpa_printf(MSG_DEBUG, "   broadcast key");
2559
2560                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2561                 if (!types ||
2562                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2563                         goto fail;
2564                 nla_nest_end(msg, types);
2565         }
2566         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2567                 goto fail;
2568
2569         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2570         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2571                 ret = 0;
2572         if (ret)
2573                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2574                            ret, strerror(-ret));
2575
2576         /*
2577          * If we failed or don't need to set the default TX key (below),
2578          * we're done here.
2579          */
2580         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2581                 return ret;
2582         if (is_ap_interface(drv->nlmode) && addr &&
2583             !is_broadcast_ether_addr(addr))
2584                 return ret;
2585
2586         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2587         if (!msg ||
2588             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2589             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2590                                alg == WPA_ALG_BIP_GMAC_128 ||
2591                                alg == WPA_ALG_BIP_GMAC_256 ||
2592                                alg == WPA_ALG_BIP_CMAC_256) ?
2593                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2594                          NL80211_ATTR_KEY_DEFAULT))
2595                 goto fail;
2596         if (addr && is_broadcast_ether_addr(addr)) {
2597                 struct nlattr *types;
2598
2599                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2600                 if (!types ||
2601                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2602                         goto fail;
2603                 nla_nest_end(msg, types);
2604         } else if (addr) {
2605                 struct nlattr *types;
2606
2607                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2608                 if (!types ||
2609                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2610                         goto fail;
2611                 nla_nest_end(msg, types);
2612         }
2613
2614         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2615         if (ret == -ENOENT)
2616                 ret = 0;
2617         if (ret)
2618                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2619                            "err=%d %s)", ret, strerror(-ret));
2620         return ret;
2621
2622 fail:
2623         nl80211_nlmsg_clear(msg);
2624         nlmsg_free(msg);
2625         return -ENOBUFS;
2626 }
2627
2628
2629 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2630                       int key_idx, int defkey,
2631                       const u8 *seq, size_t seq_len,
2632                       const u8 *key, size_t key_len)
2633 {
2634         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2635         if (!key_attr)
2636                 return -1;
2637
2638         if (defkey && alg == WPA_ALG_IGTK) {
2639                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2640                         return -1;
2641         } else if (defkey) {
2642                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2643                         return -1;
2644         }
2645
2646         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2647             nla_put_u32(msg, NL80211_KEY_CIPHER,
2648                         wpa_alg_to_cipher_suite(alg, key_len)) ||
2649             (seq && seq_len &&
2650              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2651             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2652                 return -1;
2653
2654         nla_nest_end(msg, key_attr);
2655
2656         return 0;
2657 }
2658
2659
2660 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2661                                  struct nl_msg *msg)
2662 {
2663         int i, privacy = 0;
2664         struct nlattr *nl_keys, *nl_key;
2665
2666         for (i = 0; i < 4; i++) {
2667                 if (!params->wep_key[i])
2668                         continue;
2669                 privacy = 1;
2670                 break;
2671         }
2672         if (params->wps == WPS_MODE_PRIVACY)
2673                 privacy = 1;
2674         if (params->pairwise_suite &&
2675             params->pairwise_suite != WPA_CIPHER_NONE)
2676                 privacy = 1;
2677
2678         if (!privacy)
2679                 return 0;
2680
2681         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2682                 return -ENOBUFS;
2683
2684         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2685         if (!nl_keys)
2686                 return -ENOBUFS;
2687
2688         for (i = 0; i < 4; i++) {
2689                 if (!params->wep_key[i])
2690                         continue;
2691
2692                 nl_key = nla_nest_start(msg, i);
2693                 if (!nl_key ||
2694                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2695                             params->wep_key[i]) ||
2696                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2697                                 params->wep_key_len[i] == 5 ?
2698                                 WLAN_CIPHER_SUITE_WEP40 :
2699                                 WLAN_CIPHER_SUITE_WEP104) ||
2700                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2701                     (i == params->wep_tx_keyidx &&
2702                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2703                         return -ENOBUFS;
2704
2705                 nla_nest_end(msg, nl_key);
2706         }
2707         nla_nest_end(msg, nl_keys);
2708
2709         return 0;
2710 }
2711
2712
2713 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2714                             const u8 *addr, int cmd, u16 reason_code,
2715                             int local_state_change)
2716 {
2717         int ret;
2718         struct nl_msg *msg;
2719
2720         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2721             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2722             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2723             (local_state_change &&
2724              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2725                 nlmsg_free(msg);
2726                 return -1;
2727         }
2728
2729         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2730         if (ret) {
2731                 wpa_dbg(drv->ctx, MSG_DEBUG,
2732                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2733                         reason_code, ret, strerror(-ret));
2734         }
2735         return ret;
2736 }
2737
2738
2739 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2740                                          int reason_code)
2741 {
2742         int ret;
2743
2744         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2745         nl80211_mark_disconnected(drv);
2746         /* Disconnect command doesn't need BSSID - it uses cached value */
2747         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2748                                       reason_code, 0);
2749         /*
2750          * For locally generated disconnect, supplicant already generates a
2751          * DEAUTH event, so ignore the event from NL80211.
2752          */
2753         drv->ignore_next_local_disconnect = ret == 0;
2754
2755         return ret;
2756 }
2757
2758
2759 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2760                                              const u8 *addr, int reason_code)
2761 {
2762         struct wpa_driver_nl80211_data *drv = bss->drv;
2763         int ret;
2764
2765         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2766                 nl80211_mark_disconnected(drv);
2767                 return nl80211_leave_ibss(drv, 1);
2768         }
2769         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2770                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2771         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2772                    __func__, MAC2STR(addr), reason_code);
2773         nl80211_mark_disconnected(drv);
2774         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2775                                       reason_code, 0);
2776         /*
2777          * For locally generated deauthenticate, supplicant already generates a
2778          * DEAUTH event, so ignore the event from NL80211.
2779          */
2780         drv->ignore_next_local_deauth = ret == 0;
2781         return ret;
2782 }
2783
2784
2785 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2786                                      struct wpa_driver_auth_params *params)
2787 {
2788         int i;
2789
2790         drv->auth_freq = params->freq;
2791         drv->auth_alg = params->auth_alg;
2792         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2793         drv->auth_local_state_change = params->local_state_change;
2794         drv->auth_p2p = params->p2p;
2795
2796         if (params->bssid)
2797                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2798         else
2799                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2800
2801         if (params->ssid) {
2802                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2803                 drv->auth_ssid_len = params->ssid_len;
2804         } else
2805                 drv->auth_ssid_len = 0;
2806
2807
2808         os_free(drv->auth_ie);
2809         drv->auth_ie = NULL;
2810         drv->auth_ie_len = 0;
2811         if (params->ie) {
2812                 drv->auth_ie = os_malloc(params->ie_len);
2813                 if (drv->auth_ie) {
2814                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2815                         drv->auth_ie_len = params->ie_len;
2816                 }
2817         }
2818
2819         for (i = 0; i < 4; i++) {
2820                 if (params->wep_key[i] && params->wep_key_len[i] &&
2821                     params->wep_key_len[i] <= 16) {
2822                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2823                                   params->wep_key_len[i]);
2824                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2825                 } else
2826                         drv->auth_wep_key_len[i] = 0;
2827         }
2828 }
2829
2830
2831 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2832 {
2833         struct wpa_driver_nl80211_data *drv = bss->drv;
2834
2835         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2836                 return;
2837
2838         /*
2839          * Looks like we failed to unmask 11b rates previously. This could
2840          * happen, e.g., if the interface was down at the point in time when a
2841          * P2P group was terminated.
2842          */
2843         wpa_printf(MSG_DEBUG,
2844                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2845                    bss->ifname);
2846         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2847 }
2848
2849
2850 static int wpa_driver_nl80211_authenticate(
2851         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2852 {
2853         struct wpa_driver_nl80211_data *drv = bss->drv;
2854         int ret = -1, i;
2855         struct nl_msg *msg;
2856         enum nl80211_auth_type type;
2857         enum nl80211_iftype nlmode;
2858         int count = 0;
2859         int is_retry;
2860
2861         nl80211_unmask_11b_rates(bss);
2862
2863         is_retry = drv->retry_auth;
2864         drv->retry_auth = 0;
2865         drv->ignore_deauth_event = 0;
2866
2867         nl80211_mark_disconnected(drv);
2868         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2869         if (params->bssid)
2870                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2871         else
2872                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2873         /* FIX: IBSS mode */
2874         nlmode = params->p2p ?
2875                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2876         if (drv->nlmode != nlmode &&
2877             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2878                 return -1;
2879
2880 retry:
2881         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2882                    drv->ifindex);
2883
2884         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2885         if (!msg)
2886                 goto fail;
2887
2888         for (i = 0; i < 4; i++) {
2889                 if (!params->wep_key[i])
2890                         continue;
2891                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2892                                            NULL, i,
2893                                            i == params->wep_tx_keyidx, NULL, 0,
2894                                            params->wep_key[i],
2895                                            params->wep_key_len[i]);
2896                 if (params->wep_tx_keyidx != i)
2897                         continue;
2898                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2899                                params->wep_key[i], params->wep_key_len[i]))
2900                         goto fail;
2901         }
2902
2903         if (params->bssid) {
2904                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2905                            MAC2STR(params->bssid));
2906                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2907                         goto fail;
2908         }
2909         if (params->freq) {
2910                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2911                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2912                         goto fail;
2913         }
2914         if (params->ssid) {
2915                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2916                                   params->ssid, params->ssid_len);
2917                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2918                             params->ssid))
2919                         goto fail;
2920         }
2921         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2922         if (params->ie &&
2923             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2924                 goto fail;
2925         if (params->sae_data) {
2926                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2927                             params->sae_data_len);
2928                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2929                             params->sae_data))
2930                         goto fail;
2931         }
2932         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2933                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2934         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2935                 type = NL80211_AUTHTYPE_SHARED_KEY;
2936         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2937                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2938         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2939                 type = NL80211_AUTHTYPE_FT;
2940         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2941                 type = NL80211_AUTHTYPE_SAE;
2942         else
2943                 goto fail;
2944         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2945         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2946                 goto fail;
2947         if (params->local_state_change) {
2948                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2949                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2950                         goto fail;
2951         }
2952
2953         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2954         msg = NULL;
2955         if (ret) {
2956                 wpa_dbg(drv->ctx, MSG_DEBUG,
2957                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2958                         ret, strerror(-ret));
2959                 count++;
2960                 if (ret == -EALREADY && count == 1 && params->bssid &&
2961                     !params->local_state_change) {
2962                         /*
2963                          * mac80211 does not currently accept new
2964                          * authentication if we are already authenticated. As a
2965                          * workaround, force deauthentication and try again.
2966                          */
2967                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2968                                    "after forced deauthentication");
2969                         drv->ignore_deauth_event = 1;
2970                         wpa_driver_nl80211_deauthenticate(
2971                                 bss, params->bssid,
2972                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2973                         nlmsg_free(msg);
2974                         goto retry;
2975                 }
2976
2977                 if (ret == -ENOENT && params->freq && !is_retry) {
2978                         /*
2979                          * cfg80211 has likely expired the BSS entry even
2980                          * though it was previously available in our internal
2981                          * BSS table. To recover quickly, start a single
2982                          * channel scan on the specified channel.
2983                          */
2984                         struct wpa_driver_scan_params scan;
2985                         int freqs[2];
2986
2987                         os_memset(&scan, 0, sizeof(scan));
2988                         scan.num_ssids = 1;
2989                         if (params->ssid) {
2990                                 scan.ssids[0].ssid = params->ssid;
2991                                 scan.ssids[0].ssid_len = params->ssid_len;
2992                         }
2993                         freqs[0] = params->freq;
2994                         freqs[1] = 0;
2995                         scan.freqs = freqs;
2996                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
2997                                    "channel scan to refresh cfg80211 BSS "
2998                                    "entry");
2999                         ret = wpa_driver_nl80211_scan(bss, &scan);
3000                         if (ret == 0) {
3001                                 nl80211_copy_auth_params(drv, params);
3002                                 drv->scan_for_auth = 1;
3003                         }
3004                 } else if (is_retry) {
3005                         /*
3006                          * Need to indicate this with an event since the return
3007                          * value from the retry is not delivered to core code.
3008                          */
3009                         union wpa_event_data event;
3010                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3011                                    "failed");
3012                         os_memset(&event, 0, sizeof(event));
3013                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3014                                   ETH_ALEN);
3015                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3016                                              &event);
3017                 }
3018         } else {
3019                 wpa_printf(MSG_DEBUG,
3020                            "nl80211: Authentication request send successfully");
3021         }
3022
3023 fail:
3024         nlmsg_free(msg);
3025         return ret;
3026 }
3027
3028
3029 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3030 {
3031         struct wpa_driver_auth_params params;
3032         struct i802_bss *bss = drv->first_bss;
3033         int i;
3034
3035         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3036
3037         os_memset(&params, 0, sizeof(params));
3038         params.freq = drv->auth_freq;
3039         params.auth_alg = drv->auth_alg;
3040         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3041         params.local_state_change = drv->auth_local_state_change;
3042         params.p2p = drv->auth_p2p;
3043
3044         if (!is_zero_ether_addr(drv->auth_bssid_))
3045                 params.bssid = drv->auth_bssid_;
3046
3047         if (drv->auth_ssid_len) {
3048                 params.ssid = drv->auth_ssid;
3049                 params.ssid_len = drv->auth_ssid_len;
3050         }
3051
3052         params.ie = drv->auth_ie;
3053         params.ie_len = drv->auth_ie_len;
3054
3055         for (i = 0; i < 4; i++) {
3056                 if (drv->auth_wep_key_len[i]) {
3057                         params.wep_key[i] = drv->auth_wep_key[i];
3058                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3059                 }
3060         }
3061
3062         drv->retry_auth = 1;
3063         return wpa_driver_nl80211_authenticate(bss, &params);
3064 }
3065
3066
3067 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3068                                          const void *data, size_t len,
3069                                          int encrypt, int noack,
3070                                          unsigned int freq, int no_cck,
3071                                          int offchanok, unsigned int wait_time)
3072 {
3073         struct wpa_driver_nl80211_data *drv = bss->drv;
3074         u64 cookie;
3075         int res;
3076
3077         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3078                 freq = nl80211_get_assoc_freq(drv);
3079                 wpa_printf(MSG_DEBUG,
3080                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3081                            freq);
3082         }
3083         if (freq == 0) {
3084                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3085                            bss->freq);
3086                 freq = bss->freq;
3087         }
3088
3089         if (drv->use_monitor) {
3090                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3091                            freq, bss->freq);
3092                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3093         }
3094
3095         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3096         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3097                                      &cookie, no_cck, noack, offchanok);
3098         if (res == 0 && !noack) {
3099                 const struct ieee80211_mgmt *mgmt;
3100                 u16 fc;
3101
3102                 mgmt = (const struct ieee80211_mgmt *) data;
3103                 fc = le_to_host16(mgmt->frame_control);
3104                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3105                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3106                         wpa_printf(MSG_MSGDUMP,
3107                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3108                                    (long long unsigned int)
3109                                    drv->send_action_cookie,
3110                                    (long long unsigned int) cookie);
3111                         drv->send_action_cookie = cookie;
3112                 }
3113         }
3114
3115         return res;
3116 }
3117
3118
3119 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3120                                         size_t data_len, int noack,
3121                                         unsigned int freq, int no_cck,
3122                                         int offchanok,
3123                                         unsigned int wait_time)
3124 {
3125         struct wpa_driver_nl80211_data *drv = bss->drv;
3126         struct ieee80211_mgmt *mgmt;
3127         int encrypt = 1;
3128         u16 fc;
3129
3130         mgmt = (struct ieee80211_mgmt *) data;
3131         fc = le_to_host16(mgmt->frame_control);
3132         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3133                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3134                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3135                    fc, fc2str(fc), drv->nlmode);
3136
3137         if ((is_sta_interface(drv->nlmode) ||
3138              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3139             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3140             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3141                 /*
3142                  * The use of last_mgmt_freq is a bit of a hack,
3143                  * but it works due to the single-threaded nature
3144                  * of wpa_supplicant.
3145                  */
3146                 if (freq == 0) {
3147                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3148                                    drv->last_mgmt_freq);
3149                         freq = drv->last_mgmt_freq;
3150                 }
3151                 return nl80211_send_frame_cmd(bss, freq, 0,
3152                                               data, data_len, NULL, 1, noack,
3153                                               1);
3154         }
3155
3156         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3157                 if (freq == 0) {
3158                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3159                                    bss->freq);
3160                         freq = bss->freq;
3161                 }
3162                 return nl80211_send_frame_cmd(bss, freq,
3163                                               (int) freq == bss->freq ? 0 :
3164                                               wait_time,
3165                                               data, data_len,
3166                                               &drv->send_action_cookie,
3167                                               no_cck, noack, offchanok);
3168         }
3169
3170         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3171             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3172                 /*
3173                  * Only one of the authentication frame types is encrypted.
3174                  * In order for static WEP encryption to work properly (i.e.,
3175                  * to not encrypt the frame), we need to tell mac80211 about
3176                  * the frames that must not be encrypted.
3177                  */
3178                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3179                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3180                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3181                         encrypt = 0;
3182         }
3183
3184         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3185         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3186                                              noack, freq, no_cck, offchanok,
3187                                              wait_time);
3188 }
3189
3190
3191 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3192 {
3193         u8 rates[NL80211_MAX_SUPP_RATES];
3194         u8 rates_len = 0;
3195         int i;
3196
3197         if (!basic_rates)
3198                 return 0;
3199
3200         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3201                 rates[rates_len++] = basic_rates[i] / 5;
3202
3203         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3204 }
3205
3206
3207 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3208                            int slot, int ht_opmode, int ap_isolate,
3209                            const int *basic_rates)
3210 {
3211         struct wpa_driver_nl80211_data *drv = bss->drv;
3212         struct nl_msg *msg;
3213
3214         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3215             (cts >= 0 &&
3216              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3217             (preamble >= 0 &&
3218              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3219             (slot >= 0 &&
3220              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3221             (ht_opmode >= 0 &&
3222              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3223             (ap_isolate >= 0 &&
3224              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3225             nl80211_put_basic_rates(msg, basic_rates)) {
3226                 nlmsg_free(msg);
3227                 return -ENOBUFS;
3228         }
3229
3230         return send_and_recv_msgs(drv, msg, NULL, NULL);
3231 }
3232
3233
3234 static int wpa_driver_nl80211_set_acl(void *priv,
3235                                       struct hostapd_acl_params *params)
3236 {
3237         struct i802_bss *bss = priv;
3238         struct wpa_driver_nl80211_data *drv = bss->drv;
3239         struct nl_msg *msg;
3240         struct nlattr *acl;
3241         unsigned int i;
3242         int ret;
3243
3244         if (!(drv->capa.max_acl_mac_addrs))
3245                 return -ENOTSUP;
3246
3247         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3248                 return -ENOTSUP;
3249
3250         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3251                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3252
3253         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3254             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3255                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3256                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3257             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3258                 nlmsg_free(msg);
3259                 return -ENOMEM;
3260         }
3261
3262         for (i = 0; i < params->num_mac_acl; i++) {
3263                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3264                         nlmsg_free(msg);
3265                         return -ENOMEM;
3266                 }
3267         }
3268
3269         nla_nest_end(msg, acl);
3270
3271         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3272         if (ret) {
3273                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3274                            ret, strerror(-ret));
3275         }
3276
3277         return ret;
3278 }
3279
3280
3281 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3282 {
3283         if (beacon_int > 0) {
3284                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3285                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3286                                    beacon_int);
3287         }
3288
3289         return 0;
3290 }
3291
3292
3293 static int wpa_driver_nl80211_set_ap(void *priv,
3294                                      struct wpa_driver_ap_params *params)
3295 {
3296         struct i802_bss *bss = priv;
3297         struct wpa_driver_nl80211_data *drv = bss->drv;
3298         struct nl_msg *msg;
3299         u8 cmd = NL80211_CMD_NEW_BEACON;
3300         int ret;
3301         int beacon_set;
3302         int num_suites;
3303         int smps_mode;
3304         u32 suites[10], suite;
3305         u32 ver;
3306
3307         beacon_set = params->reenable ? 0 : bss->beacon_set;
3308
3309         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3310                    beacon_set);
3311         if (beacon_set)
3312                 cmd = NL80211_CMD_SET_BEACON;
3313
3314         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3315                     params->head, params->head_len);
3316         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3317                     params->tail, params->tail_len);
3318         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3319         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3320         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3321         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3322                           params->ssid, params->ssid_len);
3323         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3324             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3325                     params->head) ||
3326             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3327                     params->tail) ||
3328             nl80211_put_beacon_int(msg, params->beacon_int) ||
3329             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3330             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3331                 goto fail;
3332         if (params->proberesp && params->proberesp_len) {
3333                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3334                             params->proberesp, params->proberesp_len);
3335                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3336                             params->proberesp))
3337                         goto fail;
3338         }
3339         switch (params->hide_ssid) {
3340         case NO_SSID_HIDING:
3341                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3342                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3343                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3344                         goto fail;
3345                 break;
3346         case HIDDEN_SSID_ZERO_LEN:
3347                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3348                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3349                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3350                         goto fail;
3351                 break;
3352         case HIDDEN_SSID_ZERO_CONTENTS:
3353                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3354                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3355                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3356                         goto fail;
3357                 break;
3358         }
3359         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3360         if (params->privacy &&
3361             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3362                 goto fail;
3363         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3364         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3365             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3366                 /* Leave out the attribute */
3367         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3368                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3369                                 NL80211_AUTHTYPE_SHARED_KEY))
3370                         goto fail;
3371         } else {
3372                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3373                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3374                         goto fail;
3375         }
3376
3377         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3378         ver = 0;
3379         if (params->wpa_version & WPA_PROTO_WPA)
3380                 ver |= NL80211_WPA_VERSION_1;
3381         if (params->wpa_version & WPA_PROTO_RSN)
3382                 ver |= NL80211_WPA_VERSION_2;
3383         if (ver &&
3384             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3385                 goto fail;
3386
3387         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3388                    params->key_mgmt_suites);
3389         num_suites = 0;
3390         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3391                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3392         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3393                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3394         if (num_suites &&
3395             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3396                     suites))
3397                 goto fail;
3398
3399         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3400             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3401             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3402                 goto fail;
3403
3404         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3405                    params->pairwise_ciphers);
3406         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3407                                                  suites, ARRAY_SIZE(suites));
3408         if (num_suites &&
3409             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3410                     num_suites * sizeof(u32), suites))
3411                 goto fail;
3412
3413         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3414                    params->group_cipher);
3415         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3416         if (suite &&
3417             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3418                 goto fail;
3419
3420         switch (params->smps_mode) {
3421         case HT_CAP_INFO_SMPS_DYNAMIC:
3422                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3423                 smps_mode = NL80211_SMPS_DYNAMIC;
3424                 break;
3425         case HT_CAP_INFO_SMPS_STATIC:
3426                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3427                 smps_mode = NL80211_SMPS_STATIC;
3428                 break;
3429         default:
3430                 /* invalid - fallback to smps off */
3431         case HT_CAP_INFO_SMPS_DISABLED:
3432                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3433                 smps_mode = NL80211_SMPS_OFF;
3434                 break;
3435         }
3436         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3437                 goto fail;
3438
3439         if (params->beacon_ies) {
3440                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3441                                 params->beacon_ies);
3442                 if (nla_put(msg, NL80211_ATTR_IE,
3443                             wpabuf_len(params->beacon_ies),
3444                             wpabuf_head(params->beacon_ies)))
3445                         goto fail;
3446         }
3447         if (params->proberesp_ies) {
3448                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3449                                 params->proberesp_ies);
3450                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3451                             wpabuf_len(params->proberesp_ies),
3452                             wpabuf_head(params->proberesp_ies)))
3453                         goto fail;
3454         }
3455         if (params->assocresp_ies) {
3456                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3457                                 params->assocresp_ies);
3458                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3459                             wpabuf_len(params->assocresp_ies),
3460                             wpabuf_head(params->assocresp_ies)))
3461                         goto fail;
3462         }
3463
3464         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3465                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3466                            params->ap_max_inactivity);
3467                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3468                                 params->ap_max_inactivity))
3469                         goto fail;
3470         }
3471
3472 #ifdef CONFIG_P2P
3473         if (params->p2p_go_ctwindow > 0) {
3474                 if (drv->p2p_go_ctwindow_supported) {
3475                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3476                                    params->p2p_go_ctwindow);
3477                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3478                                        params->p2p_go_ctwindow))
3479                                 goto fail;
3480                 } else {
3481                         wpa_printf(MSG_INFO,
3482                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3483                 }
3484         }
3485 #endif /* CONFIG_P2P */
3486
3487         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3488         if (ret) {
3489                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3490                            ret, strerror(-ret));
3491         } else {
3492                 bss->beacon_set = 1;
3493                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3494                                 params->short_slot_time, params->ht_opmode,
3495                                 params->isolate, params->basic_rates);
3496                 if (beacon_set && params->freq &&
3497                     params->freq->bandwidth != bss->bandwidth) {
3498                         wpa_printf(MSG_DEBUG,
3499                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3500                                    bss->ifname, bss->bandwidth,
3501                                    params->freq->bandwidth);
3502                         ret = nl80211_set_channel(bss, params->freq, 1);
3503                         if (ret) {
3504                                 wpa_printf(MSG_DEBUG,
3505                                            "nl80211: Frequency set failed: %d (%s)",
3506                                            ret, strerror(-ret));
3507                         } else {
3508                                 wpa_printf(MSG_DEBUG,
3509                                            "nl80211: Frequency set succeeded for ht2040 coex");
3510                                 bss->bandwidth = params->freq->bandwidth;
3511                         }
3512                 } else if (!beacon_set) {
3513                         /*
3514                          * cfg80211 updates the driver on frequence change in AP
3515                          * mode only at the point when beaconing is started, so
3516                          * set the initial value here.
3517                          */
3518                         bss->bandwidth = params->freq->bandwidth;
3519                 }
3520         }
3521         return ret;
3522 fail:
3523         nlmsg_free(msg);
3524         return -ENOBUFS;
3525 }
3526
3527
3528 static int nl80211_put_freq_params(struct nl_msg *msg,
3529                                    const struct hostapd_freq_params *freq)
3530 {
3531         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3532         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3533                 return -ENOBUFS;
3534
3535         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3536         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3537
3538         if (freq->vht_enabled) {
3539                 enum nl80211_chan_width cw;
3540
3541                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3542                 switch (freq->bandwidth) {
3543                 case 20:
3544                         cw = NL80211_CHAN_WIDTH_20;
3545                         break;
3546                 case 40:
3547                         cw = NL80211_CHAN_WIDTH_40;
3548                         break;
3549                 case 80:
3550                         if (freq->center_freq2)
3551                                 cw = NL80211_CHAN_WIDTH_80P80;
3552                         else
3553                                 cw = NL80211_CHAN_WIDTH_80;
3554                         break;
3555                 case 160:
3556                         cw = NL80211_CHAN_WIDTH_160;
3557                         break;
3558                 default:
3559                         return -EINVAL;
3560                 }
3561
3562                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3563                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3564                            freq->center_freq1);
3565                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3566                            freq->center_freq2);
3567                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3568                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3569                                 freq->center_freq1) ||
3570                     (freq->center_freq2 &&
3571                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3572                                  freq->center_freq2)))
3573                         return -ENOBUFS;
3574         } else if (freq->ht_enabled) {
3575                 enum nl80211_channel_type ct;
3576
3577                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3578                            freq->sec_channel_offset);
3579                 switch (freq->sec_channel_offset) {
3580                 case -1:
3581                         ct = NL80211_CHAN_HT40MINUS;
3582                         break;
3583                 case 1:
3584                         ct = NL80211_CHAN_HT40PLUS;
3585                         break;
3586                 default:
3587                         ct = NL80211_CHAN_HT20;
3588                         break;
3589                 }
3590
3591                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3592                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3593                         return -ENOBUFS;
3594         }
3595         return 0;
3596 }
3597
3598
3599 static int nl80211_set_channel(struct i802_bss *bss,
3600                                struct hostapd_freq_params *freq, int set_chan)
3601 {
3602         struct wpa_driver_nl80211_data *drv = bss->drv;
3603         struct nl_msg *msg;
3604         int ret;
3605
3606         wpa_printf(MSG_DEBUG,
3607                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3608                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3609                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3610
3611         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3612                               NL80211_CMD_SET_WIPHY);
3613         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3614                 nlmsg_free(msg);
3615                 return -1;
3616         }
3617
3618         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3619         if (ret == 0) {
3620                 bss->freq = freq->freq;
3621                 return 0;
3622         }
3623         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3624                    "%d (%s)", freq->freq, ret, strerror(-ret));
3625         return -1;
3626 }
3627
3628
3629 static u32 sta_flags_nl80211(int flags)
3630 {
3631         u32 f = 0;
3632
3633         if (flags & WPA_STA_AUTHORIZED)
3634                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3635         if (flags & WPA_STA_WMM)
3636                 f |= BIT(NL80211_STA_FLAG_WME);
3637         if (flags & WPA_STA_SHORT_PREAMBLE)
3638                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3639         if (flags & WPA_STA_MFP)
3640                 f |= BIT(NL80211_STA_FLAG_MFP);
3641         if (flags & WPA_STA_TDLS_PEER)
3642                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3643         if (flags & WPA_STA_AUTHENTICATED)
3644                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3645
3646         return f;
3647 }
3648
3649
3650 #ifdef CONFIG_MESH
3651 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3652 {
3653         switch (state) {
3654         case PLINK_LISTEN:
3655                 return NL80211_PLINK_LISTEN;
3656         case PLINK_OPEN_SENT:
3657                 return NL80211_PLINK_OPN_SNT;
3658         case PLINK_OPEN_RCVD:
3659                 return NL80211_PLINK_OPN_RCVD;
3660         case PLINK_CNF_RCVD:
3661                 return NL80211_PLINK_CNF_RCVD;
3662         case PLINK_ESTAB:
3663                 return NL80211_PLINK_ESTAB;
3664         case PLINK_HOLDING:
3665                 return NL80211_PLINK_HOLDING;
3666         case PLINK_BLOCKED:
3667                 return NL80211_PLINK_BLOCKED;
3668         default:
3669                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3670                            state);
3671         }
3672         return -1;
3673 }
3674 #endif /* CONFIG_MESH */
3675
3676
3677 static int wpa_driver_nl80211_sta_add(void *priv,
3678                                       struct hostapd_sta_add_params *params)
3679 {
3680         struct i802_bss *bss = priv;
3681         struct wpa_driver_nl80211_data *drv = bss->drv;
3682         struct nl_msg *msg;
3683         struct nl80211_sta_flag_update upd;
3684         int ret = -ENOBUFS;
3685
3686         if ((params->flags & WPA_STA_TDLS_PEER) &&
3687             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3688                 return -EOPNOTSUPP;
3689
3690         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3691                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3692         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3693                               NL80211_CMD_NEW_STATION);
3694         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3695                 goto fail;
3696
3697         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3698                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3699                             params->supp_rates, params->supp_rates_len);
3700                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3701                            params->capability);
3702                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3703                             params->supp_rates_len, params->supp_rates) ||
3704                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3705                                 params->capability))
3706                         goto fail;
3707
3708                 if (params->ht_capabilities) {
3709                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3710                                     (u8 *) params->ht_capabilities,
3711                                     sizeof(*params->ht_capabilities));
3712                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3713                                     sizeof(*params->ht_capabilities),
3714                                     params->ht_capabilities))
3715                                 goto fail;
3716                 }
3717
3718                 if (params->vht_capabilities) {
3719                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3720                                     (u8 *) params->vht_capabilities,
3721                                     sizeof(*params->vht_capabilities));
3722                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3723                                     sizeof(*params->vht_capabilities),
3724                                     params->vht_capabilities))
3725                                 goto fail;
3726                 }
3727
3728                 if (params->ext_capab) {
3729                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3730                                     params->ext_capab, params->ext_capab_len);
3731                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3732                                     params->ext_capab_len, params->ext_capab))
3733                                 goto fail;
3734                 }
3735         }
3736         if (!params->set) {
3737                 if (params->aid) {
3738                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3739                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3740                                 goto fail;
3741                 } else {
3742                         /*
3743                          * cfg80211 validates that AID is non-zero, so we have
3744                          * to make this a non-zero value for the TDLS case where
3745                          * a dummy STA entry is used for now.
3746                          */
3747                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3748                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3749                                 goto fail;
3750                 }
3751                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3752                            params->listen_interval);
3753                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3754                                 params->listen_interval))
3755                         goto fail;
3756         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3757                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3758                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3759                         goto fail;
3760         }
3761
3762         if (params->vht_opmode_enabled) {
3763                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3764                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3765                                params->vht_opmode))
3766                         goto fail;
3767         }
3768
3769         if (params->supp_channels) {
3770                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3771                             params->supp_channels, params->supp_channels_len);
3772                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3773                             params->supp_channels_len, params->supp_channels))
3774                         goto fail;
3775         }
3776
3777         if (params->supp_oper_classes) {
3778                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3779                             params->supp_oper_classes,
3780                             params->supp_oper_classes_len);
3781                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3782                             params->supp_oper_classes_len,
3783                             params->supp_oper_classes))
3784                         goto fail;
3785         }
3786
3787         os_memset(&upd, 0, sizeof(upd));
3788         upd.set = sta_flags_nl80211(params->flags);
3789         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3790         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3791                    upd.set, upd.mask);
3792         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3793                 goto fail;
3794
3795 #ifdef CONFIG_MESH
3796         if (params->plink_state &&
3797             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3798                        sta_plink_state_nl80211(params->plink_state)))
3799                 goto fail;
3800 #endif /* CONFIG_MESH */
3801
3802         if (params->flags & WPA_STA_WMM) {
3803                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3804
3805                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3806                 if (!wme ||
3807                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3808                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3809                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3810                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3811                                WMM_QOSINFO_STA_SP_MASK))
3812                         goto fail;
3813                 nla_nest_end(msg, wme);
3814         }
3815
3816         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3817         msg = NULL;
3818         if (ret)
3819                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3820                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3821                            strerror(-ret));
3822         if (ret == -EEXIST)
3823                 ret = 0;
3824 fail:
3825         nlmsg_free(msg);
3826         return ret;
3827 }
3828
3829
3830 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3831 {
3832 #ifdef CONFIG_LIBNL3_ROUTE
3833         struct wpa_driver_nl80211_data *drv = bss->drv;
3834         struct rtnl_neigh *rn;
3835         struct nl_addr *nl_addr;
3836         int err;
3837
3838         rn = rtnl_neigh_alloc();
3839         if (!rn)
3840                 return;
3841
3842         rtnl_neigh_set_family(rn, AF_BRIDGE);
3843         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3844         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3845         if (!nl_addr) {
3846                 rtnl_neigh_put(rn);
3847                 return;
3848         }
3849         rtnl_neigh_set_lladdr(rn, nl_addr);
3850
3851         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3852         if (err < 0) {
3853                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3854                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3855                            bss->ifindex, nl_geterror(err));
3856         } else {
3857                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3858                            MACSTR, MAC2STR(addr));
3859         }
3860
3861         nl_addr_put(nl_addr);
3862         rtnl_neigh_put(rn);
3863 #endif /* CONFIG_LIBNL3_ROUTE */
3864 }
3865
3866
3867 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3868                                          int deauth, u16 reason_code)
3869 {
3870         struct wpa_driver_nl80211_data *drv = bss->drv;
3871         struct nl_msg *msg;
3872         int ret;
3873
3874         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3875             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3876             (deauth == 0 &&
3877              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3878                         WLAN_FC_STYPE_DISASSOC)) ||
3879             (deauth == 1 &&
3880              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3881                         WLAN_FC_STYPE_DEAUTH)) ||
3882             (reason_code &&
3883              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3884                 nlmsg_free(msg);
3885                 return -ENOBUFS;
3886         }
3887
3888         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3889         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3890                    " --> %d (%s)",
3891                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3892
3893         if (drv->rtnl_sk)
3894                 rtnl_neigh_delete_fdb_entry(bss, addr);
3895
3896         if (ret == -ENOENT)
3897                 return 0;
3898         return ret;
3899 }
3900
3901
3902 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3903 {
3904         struct nl_msg *msg;
3905         struct wpa_driver_nl80211_data *drv2;
3906
3907         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3908
3909         /* stop listening for EAPOL on this interface */
3910         dl_list_for_each(drv2, &drv->global->interfaces,
3911                          struct wpa_driver_nl80211_data, list)
3912                 del_ifidx(drv2, ifidx);
3913
3914         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3915         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3916                 return;
3917         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3918 }
3919
3920
3921 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3922 {
3923         switch (mode) {
3924         case NL80211_IFTYPE_ADHOC:
3925                 return "ADHOC";
3926         case NL80211_IFTYPE_STATION:
3927                 return "STATION";
3928         case NL80211_IFTYPE_AP:
3929                 return "AP";
3930         case NL80211_IFTYPE_AP_VLAN:
3931                 return "AP_VLAN";
3932         case NL80211_IFTYPE_WDS:
3933                 return "WDS";
3934         case NL80211_IFTYPE_MONITOR:
3935                 return "MONITOR";
3936         case NL80211_IFTYPE_MESH_POINT:
3937                 return "MESH_POINT";
3938         case NL80211_IFTYPE_P2P_CLIENT:
3939                 return "P2P_CLIENT";
3940         case NL80211_IFTYPE_P2P_GO:
3941                 return "P2P_GO";
3942         case NL80211_IFTYPE_P2P_DEVICE:
3943                 return "P2P_DEVICE";
3944         default:
3945                 return "unknown";
3946         }
3947 }
3948
3949
3950 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3951                                      const char *ifname,
3952                                      enum nl80211_iftype iftype,
3953                                      const u8 *addr, int wds,
3954                                      int (*handler)(struct nl_msg *, void *),
3955                                      void *arg)
3956 {
3957         struct nl_msg *msg;
3958         int ifidx;
3959         int ret = -ENOBUFS;
3960
3961         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3962                    iftype, nl80211_iftype_str(iftype));
3963
3964         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3965         if (!msg ||
3966             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3967             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3968                 goto fail;
3969
3970         if (iftype == NL80211_IFTYPE_MONITOR) {
3971                 struct nlattr *flags;
3972
3973                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3974                 if (!flags ||
3975                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3976                         goto fail;
3977
3978                 nla_nest_end(msg, flags);
3979         } else if (wds) {
3980                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
3981                         goto fail;
3982         }
3983
3984         /*
3985          * Tell cfg80211 that the interface belongs to the socket that created
3986          * it, and the interface should be deleted when the socket is closed.
3987          */
3988         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
3989                 goto fail;
3990
3991         ret = send_and_recv_msgs(drv, msg, handler, arg);
3992         msg = NULL;
3993         if (ret) {
3994         fail:
3995                 nlmsg_free(msg);
3996                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3997                            ifname, ret, strerror(-ret));
3998                 return ret;
3999         }
4000
4001         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4002                 return 0;
4003
4004         ifidx = if_nametoindex(ifname);
4005         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4006                    ifname, ifidx);
4007
4008         if (ifidx <= 0)
4009                 return -1;
4010
4011         /*
4012          * Some virtual interfaces need to process EAPOL packets and events on
4013          * the parent interface. This is used mainly with hostapd.
4014          */
4015         if (drv->hostapd ||
4016             iftype == NL80211_IFTYPE_AP_VLAN ||
4017             iftype == NL80211_IFTYPE_WDS ||
4018             iftype == NL80211_IFTYPE_MONITOR) {
4019                 /* start listening for EAPOL on this interface */
4020                 add_ifidx(drv, ifidx);
4021         }
4022
4023         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4024             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4025                 nl80211_remove_iface(drv, ifidx);
4026                 return -1;
4027         }
4028
4029         return ifidx;
4030 }
4031
4032
4033 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4034                          const char *ifname, enum nl80211_iftype iftype,
4035                          const u8 *addr, int wds,
4036                          int (*handler)(struct nl_msg *, void *),
4037                          void *arg, int use_existing)
4038 {
4039         int ret;
4040
4041         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4042                                         arg);
4043
4044         /* if error occurred and interface exists already */
4045         if (ret == -ENFILE && if_nametoindex(ifname)) {
4046                 if (use_existing) {
4047                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4048                                    ifname);
4049                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4050                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4051                                                addr) < 0 &&
4052                             (linux_set_iface_flags(drv->global->ioctl_sock,
4053                                                    ifname, 0) < 0 ||
4054                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4055                                                 addr) < 0 ||
4056                              linux_set_iface_flags(drv->global->ioctl_sock,
4057                                                    ifname, 1) < 0))
4058                                         return -1;
4059                         return -ENFILE;
4060                 }
4061                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4062
4063                 /* Try to remove the interface that was already there. */
4064                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4065
4066                 /* Try to create the interface again */
4067                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4068                                                 wds, handler, arg);
4069         }
4070
4071         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4072                 wpa_printf(MSG_DEBUG,
4073                            "nl80211: Interface %s created for P2P - disable 11b rates",
4074                            ifname);
4075                 nl80211_disable_11b_rates(drv, ret, 1);
4076         }
4077
4078         return ret;
4079 }
4080
4081
4082 static int nl80211_setup_ap(struct i802_bss *bss)
4083 {
4084         struct wpa_driver_nl80211_data *drv = bss->drv;
4085
4086         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4087                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4088
4089         /*
4090          * Disable Probe Request reporting unless we need it in this way for
4091          * devices that include the AP SME, in the other case (unless using
4092          * monitor iface) we'll get it through the nl_mgmt socket instead.
4093          */
4094         if (!drv->device_ap_sme)
4095                 wpa_driver_nl80211_probe_req_report(bss, 0);
4096
4097         if (!drv->device_ap_sme && !drv->use_monitor)
4098                 if (nl80211_mgmt_subscribe_ap(bss))
4099                         return -1;
4100
4101         if (drv->device_ap_sme && !drv->use_monitor)
4102                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4103                         return -1;
4104
4105         if (!drv->device_ap_sme && drv->use_monitor &&
4106             nl80211_create_monitor_interface(drv) &&
4107             !drv->device_ap_sme)
4108                 return -1;
4109
4110         if (drv->device_ap_sme &&
4111             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4112                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4113                            "Probe Request frame reporting in AP mode");
4114                 /* Try to survive without this */
4115         }
4116
4117         return 0;
4118 }
4119
4120
4121 static void nl80211_teardown_ap(struct i802_bss *bss)
4122 {
4123         struct wpa_driver_nl80211_data *drv = bss->drv;
4124
4125         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4126                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4127         if (drv->device_ap_sme) {
4128                 wpa_driver_nl80211_probe_req_report(bss, 0);
4129                 if (!drv->use_monitor)
4130                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4131         } else if (drv->use_monitor)
4132                 nl80211_remove_monitor_interface(drv);
4133         else
4134                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4135
4136         bss->beacon_set = 0;
4137 }
4138
4139
4140 static int nl80211_send_eapol_data(struct i802_bss *bss,
4141                                    const u8 *addr, const u8 *data,
4142                                    size_t data_len)
4143 {
4144         struct sockaddr_ll ll;
4145         int ret;
4146
4147         if (bss->drv->eapol_tx_sock < 0) {
4148                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4149                 return -1;
4150         }
4151
4152         os_memset(&ll, 0, sizeof(ll));
4153         ll.sll_family = AF_PACKET;
4154         ll.sll_ifindex = bss->ifindex;
4155         ll.sll_protocol = htons(ETH_P_PAE);
4156         ll.sll_halen = ETH_ALEN;
4157         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4158         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4159                      (struct sockaddr *) &ll, sizeof(ll));
4160         if (ret < 0)
4161                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4162                            strerror(errno));
4163
4164         return ret;
4165 }
4166
4167
4168 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4169
4170 static int wpa_driver_nl80211_hapd_send_eapol(
4171         void *priv, const u8 *addr, const u8 *data,
4172         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4173 {
4174         struct i802_bss *bss = priv;
4175         struct wpa_driver_nl80211_data *drv = bss->drv;
4176         struct ieee80211_hdr *hdr;
4177         size_t len;
4178         u8 *pos;
4179         int res;
4180         int qos = flags & WPA_STA_WMM;
4181
4182         if (drv->device_ap_sme || !drv->use_monitor)
4183                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4184
4185         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4186                 data_len;
4187         hdr = os_zalloc(len);
4188         if (hdr == NULL) {
4189                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4190                            (unsigned long) len);
4191                 return -1;
4192         }
4193
4194         hdr->frame_control =
4195                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4196         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4197         if (encrypt)
4198                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4199         if (qos) {
4200                 hdr->frame_control |=
4201                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4202         }
4203
4204         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4205         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4206         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4207         pos = (u8 *) (hdr + 1);
4208
4209         if (qos) {
4210                 /* Set highest priority in QoS header */
4211                 pos[0] = 7;
4212                 pos[1] = 0;
4213                 pos += 2;
4214         }
4215
4216         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4217         pos += sizeof(rfc1042_header);
4218         WPA_PUT_BE16(pos, ETH_P_PAE);
4219         pos += 2;
4220         memcpy(pos, data, data_len);
4221
4222         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4223                                             0, 0, 0, 0);
4224         if (res < 0) {
4225                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4226                            "failed: %d (%s)",
4227                            (unsigned long) len, errno, strerror(errno));
4228         }
4229         os_free(hdr);
4230
4231         return res;
4232 }
4233
4234
4235 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4236                                             int total_flags,
4237                                             int flags_or, int flags_and)
4238 {
4239         struct i802_bss *bss = priv;
4240         struct nl_msg *msg;
4241         struct nlattr *flags;
4242         struct nl80211_sta_flag_update upd;
4243
4244         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4245                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4246                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4247                    !!(total_flags & WPA_STA_AUTHORIZED));
4248
4249         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4250             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4251                 goto fail;
4252
4253         /*
4254          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4255          * can be removed eventually.
4256          */
4257         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4258         if (!flags ||
4259             ((total_flags & WPA_STA_AUTHORIZED) &&
4260              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4261             ((total_flags & WPA_STA_WMM) &&
4262              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4263             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4264              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4265             ((total_flags & WPA_STA_MFP) &&
4266              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4267             ((total_flags & WPA_STA_TDLS_PEER) &&
4268              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4269                 goto fail;
4270
4271         nla_nest_end(msg, flags);
4272
4273         os_memset(&upd, 0, sizeof(upd));
4274         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4275         upd.set = sta_flags_nl80211(flags_or);
4276         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4277                 goto fail;
4278
4279         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4280 fail:
4281         nlmsg_free(msg);
4282         return -ENOBUFS;
4283 }
4284
4285
4286 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4287                                  struct wpa_driver_associate_params *params)
4288 {
4289         enum nl80211_iftype nlmode, old_mode;
4290
4291         if (params->p2p) {
4292                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4293                            "group (GO)");
4294                 nlmode = NL80211_IFTYPE_P2P_GO;
4295         } else
4296                 nlmode = NL80211_IFTYPE_AP;
4297
4298         old_mode = drv->nlmode;
4299         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4300                 nl80211_remove_monitor_interface(drv);
4301                 return -1;
4302         }
4303
4304         if (params->freq.freq &&
4305             nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4306                 if (old_mode != nlmode)
4307                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4308                 nl80211_remove_monitor_interface(drv);
4309                 return -1;
4310         }
4311
4312         return 0;
4313 }
4314
4315
4316 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4317                               int reset_mode)
4318 {
4319         struct nl_msg *msg;
4320         int ret;
4321
4322         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4323         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4324         if (ret) {
4325                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4326                            "(%s)", ret, strerror(-ret));
4327         } else {
4328                 wpa_printf(MSG_DEBUG,
4329                            "nl80211: Leave IBSS request sent successfully");
4330         }
4331
4332         if (reset_mode &&
4333             wpa_driver_nl80211_set_mode(drv->first_bss,
4334                                         NL80211_IFTYPE_STATION)) {
4335                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4336                            "station mode");
4337         }
4338
4339         return ret;
4340 }
4341
4342
4343 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4344                                     struct wpa_driver_associate_params *params)
4345 {
4346         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4347                 return -1;
4348
4349         if (params->htcaps && params->htcaps_mask) {
4350                 int sz = sizeof(struct ieee80211_ht_capabilities);
4351                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4352                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4353                             params->htcaps_mask, sz);
4354                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4355                             params->htcaps) ||
4356                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4357                             params->htcaps_mask))
4358                         return -1;
4359         }
4360
4361 #ifdef CONFIG_VHT_OVERRIDES
4362         if (params->disable_vht) {
4363                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4364                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4365                         return -1;
4366         }
4367
4368         if (params->vhtcaps && params->vhtcaps_mask) {
4369                 int sz = sizeof(struct ieee80211_vht_capabilities);
4370                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4371                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4372                             params->vhtcaps_mask, sz);
4373                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4374                             params->vhtcaps) ||
4375                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4376                             params->vhtcaps_mask))
4377                         return -1;
4378         }
4379 #endif /* CONFIG_VHT_OVERRIDES */
4380
4381         return 0;
4382 }
4383
4384
4385 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4386                                    struct wpa_driver_associate_params *params)
4387 {
4388         struct nl_msg *msg;
4389         int ret = -1;
4390         int count = 0;
4391
4392         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4393
4394         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4395                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4396                            "IBSS mode");
4397                 return -1;
4398         }
4399
4400 retry:
4401         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4402             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4403                 goto fail;
4404
4405         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4406                           params->ssid, params->ssid_len);
4407         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4408                 goto fail;
4409         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4410         drv->ssid_len = params->ssid_len;
4411
4412         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4413             nl80211_put_beacon_int(msg, params->beacon_int))
4414                 goto fail;
4415
4416         ret = nl80211_set_conn_keys(params, msg);
4417         if (ret)
4418                 goto fail;
4419
4420         if (params->bssid && params->fixed_bssid) {
4421                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4422                            MAC2STR(params->bssid));
4423                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4424                         goto fail;
4425         }
4426
4427         if (params->fixed_freq) {
4428                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4429                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4430                         goto fail;
4431         }
4432
4433         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4434             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4435             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4436             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4437                 wpa_printf(MSG_DEBUG, "  * control port");
4438                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4439                         goto fail;
4440         }
4441
4442         if (params->wpa_ie) {
4443                 wpa_hexdump(MSG_DEBUG,
4444                             "  * Extra IEs for Beacon/Probe Response frames",
4445                             params->wpa_ie, params->wpa_ie_len);
4446                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4447                             params->wpa_ie))
4448                         goto fail;
4449         }
4450
4451         if (nl80211_ht_vht_overrides(msg, params) < 0)
4452                 return -1;
4453
4454         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4455         msg = NULL;
4456         if (ret) {
4457                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4458                            ret, strerror(-ret));
4459                 count++;
4460                 if (ret == -EALREADY && count == 1) {
4461                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4462                                    "forced leave");
4463                         nl80211_leave_ibss(drv, 0);
4464                         nlmsg_free(msg);
4465                         goto retry;
4466                 }
4467         } else {
4468                 wpa_printf(MSG_DEBUG,
4469                            "nl80211: Join IBSS request sent successfully");
4470         }
4471
4472 fail:
4473         nlmsg_free(msg);
4474         return ret;
4475 }
4476
4477
4478 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4479                                   struct wpa_driver_associate_params *params,
4480                                   struct nl_msg *msg)
4481 {
4482         if (params->bssid) {
4483                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4484                            MAC2STR(params->bssid));
4485                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4486                         return -1;
4487         }
4488
4489         if (params->bssid_hint) {
4490                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4491                            MAC2STR(params->bssid_hint));
4492                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4493                             params->bssid_hint))
4494                         return -1;
4495         }
4496
4497         if (params->freq.freq) {
4498                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4499                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4500                                 params->freq.freq))
4501                         return -1;
4502                 drv->assoc_freq = params->freq.freq;
4503         } else
4504                 drv->assoc_freq = 0;
4505
4506         if (params->freq_hint) {
4507                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4508                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4509                                 params->freq_hint))
4510                         return -1;
4511         }
4512
4513         if (params->bg_scan_period >= 0) {
4514                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4515                            params->bg_scan_period);
4516                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4517                                 params->bg_scan_period))
4518                         return -1;
4519         }
4520
4521         if (params->ssid) {
4522                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4523                                   params->ssid, params->ssid_len);
4524                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4525                             params->ssid))
4526                         return -1;
4527                 if (params->ssid_len > sizeof(drv->ssid))
4528                         return -1;
4529                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4530                 drv->ssid_len = params->ssid_len;
4531         }
4532
4533         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4534         if (params->wpa_ie &&
4535             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4536                 return -1;
4537
4538         if (params->wpa_proto) {
4539                 enum nl80211_wpa_versions ver = 0;
4540
4541                 if (params->wpa_proto & WPA_PROTO_WPA)
4542                         ver |= NL80211_WPA_VERSION_1;
4543                 if (params->wpa_proto & WPA_PROTO_RSN)
4544                         ver |= NL80211_WPA_VERSION_2;
4545
4546                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4547                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4548                         return -1;
4549         }
4550
4551         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4552                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4553                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4554                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4555                                 cipher))
4556                         return -1;
4557         }
4558
4559         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4560             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4561                 /*
4562                  * This is likely to work even though many drivers do not
4563                  * advertise support for operations without GTK.
4564                  */
4565                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4566         } else if (params->group_suite != WPA_CIPHER_NONE) {
4567                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4568                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4569                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4570                         return -1;
4571         }
4572
4573         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4574             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4575             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4576             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4577             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4578             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4579             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4580             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4581             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4582             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4583                 int mgmt = WLAN_AKM_SUITE_PSK;
4584
4585                 switch (params->key_mgmt_suite) {
4586                 case WPA_KEY_MGMT_CCKM:
4587                         mgmt = WLAN_AKM_SUITE_CCKM;
4588                         break;
4589                 case WPA_KEY_MGMT_IEEE8021X:
4590                         mgmt = WLAN_AKM_SUITE_8021X;
4591                         break;
4592                 case WPA_KEY_MGMT_FT_IEEE8021X:
4593                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4594                         break;
4595                 case WPA_KEY_MGMT_FT_PSK:
4596                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4597                         break;
4598                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4599                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4600                         break;
4601                 case WPA_KEY_MGMT_PSK_SHA256:
4602                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4603                         break;
4604                 case WPA_KEY_MGMT_OSEN:
4605                         mgmt = WLAN_AKM_SUITE_OSEN;
4606                         break;
4607                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4608                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4609                         break;
4610                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4611                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4612                         break;
4613                 case WPA_KEY_MGMT_PSK:
4614                 default:
4615                         mgmt = WLAN_AKM_SUITE_PSK;
4616                         break;
4617                 }
4618                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4619                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4620                         return -1;
4621         }
4622
4623         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4624                 return -1;
4625
4626         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4627             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4628                 return -1;
4629
4630         if (params->rrm_used) {
4631                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4632                 if (!(drv_rrm_flags &
4633                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4634                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4635                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4636                         return -1;
4637         }
4638
4639         if (nl80211_ht_vht_overrides(msg, params) < 0)
4640                 return -1;
4641
4642         if (params->p2p)
4643                 wpa_printf(MSG_DEBUG, "  * P2P group");
4644
4645         return 0;
4646 }
4647
4648
4649 static int wpa_driver_nl80211_try_connect(
4650         struct wpa_driver_nl80211_data *drv,
4651         struct wpa_driver_associate_params *params)
4652 {
4653         struct nl_msg *msg;
4654         enum nl80211_auth_type type;
4655         int ret;
4656         int algs;
4657
4658         if (params->req_key_mgmt_offload && params->psk &&
4659             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4660              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4661              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4662                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4663                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4664                 if (ret)
4665                         return ret;
4666         }
4667
4668         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4669         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4670         if (!msg)
4671                 return -1;
4672
4673         ret = nl80211_connect_common(drv, params, msg);
4674         if (ret)
4675                 goto fail;
4676
4677         algs = 0;
4678         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4679                 algs++;
4680         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4681                 algs++;
4682         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4683                 algs++;
4684         if (algs > 1) {
4685                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4686                            "selection");
4687                 goto skip_auth_type;
4688         }
4689
4690         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4691                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4692         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4693                 type = NL80211_AUTHTYPE_SHARED_KEY;
4694         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4695                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4696         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4697                 type = NL80211_AUTHTYPE_FT;
4698         else
4699                 goto fail;
4700
4701         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4702         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4703                 goto fail;
4704
4705 skip_auth_type:
4706         ret = nl80211_set_conn_keys(params, msg);
4707         if (ret)
4708                 goto fail;
4709
4710         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4711         msg = NULL;
4712         if (ret) {
4713                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4714                            "(%s)", ret, strerror(-ret));
4715         } else {
4716                 wpa_printf(MSG_DEBUG,
4717                            "nl80211: Connect request send successfully");
4718         }
4719
4720 fail:
4721         nlmsg_free(msg);
4722         return ret;
4723
4724 }
4725
4726
4727 static int wpa_driver_nl80211_connect(
4728         struct wpa_driver_nl80211_data *drv,
4729         struct wpa_driver_associate_params *params)
4730 {
4731         int ret;
4732
4733         /* Store the connection attempted bssid for future use */
4734         if (params->bssid)
4735                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4736         else
4737                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4738
4739         ret = wpa_driver_nl80211_try_connect(drv, params);
4740         if (ret == -EALREADY) {
4741                 /*
4742                  * cfg80211 does not currently accept new connections if
4743                  * we are already connected. As a workaround, force
4744                  * disconnection and try again.
4745                  */
4746                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4747                            "disconnecting before reassociation "
4748                            "attempt");
4749                 if (wpa_driver_nl80211_disconnect(
4750                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4751                         return -1;
4752                 ret = wpa_driver_nl80211_try_connect(drv, params);
4753         }
4754         return ret;
4755 }
4756
4757
4758 static int wpa_driver_nl80211_associate(
4759         void *priv, struct wpa_driver_associate_params *params)
4760 {
4761         struct i802_bss *bss = priv;
4762         struct wpa_driver_nl80211_data *drv = bss->drv;
4763         int ret = -1;
4764         struct nl_msg *msg;
4765
4766         nl80211_unmask_11b_rates(bss);
4767
4768         if (params->mode == IEEE80211_MODE_AP)
4769                 return wpa_driver_nl80211_ap(drv, params);
4770
4771         if (params->mode == IEEE80211_MODE_IBSS)
4772                 return wpa_driver_nl80211_ibss(drv, params);
4773
4774         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4775                 enum nl80211_iftype nlmode = params->p2p ?
4776                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4777
4778                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4779                         return -1;
4780                 return wpa_driver_nl80211_connect(drv, params);
4781         }
4782
4783         nl80211_mark_disconnected(drv);
4784
4785         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4786                    drv->ifindex);
4787         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4788         if (!msg)
4789                 return -1;
4790
4791         ret = nl80211_connect_common(drv, params, msg);
4792         if (ret)
4793                 goto fail;
4794
4795         if (params->prev_bssid) {
4796                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4797                            MAC2STR(params->prev_bssid));
4798                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4799                             params->prev_bssid))
4800                         goto fail;
4801         }
4802
4803         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4804         msg = NULL;
4805         if (ret) {
4806                 wpa_dbg(drv->ctx, MSG_DEBUG,
4807                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4808                         ret, strerror(-ret));
4809                 nl80211_dump_scan(drv);
4810         } else {
4811                 wpa_printf(MSG_DEBUG,
4812                            "nl80211: Association request send successfully");
4813         }
4814
4815 fail:
4816         nlmsg_free(msg);
4817         return ret;
4818 }
4819
4820
4821 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4822                             int ifindex, enum nl80211_iftype mode)
4823 {
4824         struct nl_msg *msg;
4825         int ret = -ENOBUFS;
4826
4827         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4828                    ifindex, mode, nl80211_iftype_str(mode));
4829
4830         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4831         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4832                 goto fail;
4833
4834         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4835         msg = NULL;
4836         if (!ret)
4837                 return 0;
4838 fail:
4839         nlmsg_free(msg);
4840         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4841                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4842         return ret;
4843 }
4844
4845
4846 static int wpa_driver_nl80211_set_mode_impl(
4847                 struct i802_bss *bss,
4848                 enum nl80211_iftype nlmode,
4849                 struct hostapd_freq_params *desired_freq_params)
4850 {
4851         struct wpa_driver_nl80211_data *drv = bss->drv;
4852         int ret = -1;
4853         int i;
4854         int was_ap = is_ap_interface(drv->nlmode);
4855         int res;
4856         int mode_switch_res;
4857
4858         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4859         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4860                 mode_switch_res = 0;
4861
4862         if (mode_switch_res == 0) {
4863                 drv->nlmode = nlmode;
4864                 ret = 0;
4865                 goto done;
4866         }
4867
4868         if (mode_switch_res == -ENODEV)
4869                 return -1;
4870
4871         if (nlmode == drv->nlmode) {
4872                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4873                            "requested mode - ignore error");
4874                 ret = 0;
4875                 goto done; /* Already in the requested mode */
4876         }
4877
4878         /* mac80211 doesn't allow mode changes while the device is up, so
4879          * take the device down, try to set the mode again, and bring the
4880          * device back up.
4881          */
4882         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4883                    "interface down");
4884         for (i = 0; i < 10; i++) {
4885                 res = i802_set_iface_flags(bss, 0);
4886                 if (res == -EACCES || res == -ENODEV)
4887                         break;
4888                 if (res != 0) {
4889                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4890                                    "interface down");
4891                         os_sleep(0, 100000);
4892                         continue;
4893                 }
4894
4895                 /*
4896                  * Setting the mode will fail for some drivers if the phy is
4897                  * on a frequency that the mode is disallowed in.
4898                  */
4899                 if (desired_freq_params) {
4900                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4901                         if (res) {
4902                                 wpa_printf(MSG_DEBUG,
4903                                            "nl80211: Failed to set frequency on interface");
4904                         }
4905                 }
4906
4907                 /* Try to set the mode again while the interface is down */
4908                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4909                 if (mode_switch_res == -EBUSY) {
4910                         wpa_printf(MSG_DEBUG,
4911                                    "nl80211: Delaying mode set while interface going down");
4912                         os_sleep(0, 100000);
4913                         continue;
4914                 }
4915                 ret = mode_switch_res;
4916                 break;
4917         }
4918
4919         if (!ret) {
4920                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4921                            "interface is down");
4922                 drv->nlmode = nlmode;
4923                 drv->ignore_if_down_event = 1;
4924         }
4925
4926         /* Bring the interface back up */
4927         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4928         if (res != 0) {
4929                 wpa_printf(MSG_DEBUG,
4930                            "nl80211: Failed to set interface up after switching mode");
4931                 ret = -1;
4932         }
4933
4934 done:
4935         if (ret) {
4936                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4937                            "from %d failed", nlmode, drv->nlmode);
4938                 return ret;
4939         }
4940
4941         if (is_p2p_net_interface(nlmode)) {
4942                 wpa_printf(MSG_DEBUG,
4943                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4944                            bss->ifname);
4945                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4946         } else if (drv->disabled_11b_rates) {
4947                 wpa_printf(MSG_DEBUG,
4948                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4949                            bss->ifname);
4950                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4951         }
4952
4953         if (is_ap_interface(nlmode)) {
4954                 nl80211_mgmt_unsubscribe(bss, "start AP");
4955                 /* Setup additional AP mode functionality if needed */
4956                 if (nl80211_setup_ap(bss))
4957                         return -1;
4958         } else if (was_ap) {
4959                 /* Remove additional AP mode functionality */
4960                 nl80211_teardown_ap(bss);
4961         } else {
4962                 nl80211_mgmt_unsubscribe(bss, "mode change");
4963         }
4964
4965         if (is_mesh_interface(nlmode) &&
4966             nl80211_mgmt_subscribe_mesh(bss))
4967                 return -1;
4968
4969         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4970             !is_mesh_interface(nlmode) &&
4971             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4972                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4973                            "frame processing - ignore for now");
4974
4975         return 0;
4976 }
4977
4978
4979 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
4980                                 enum nl80211_iftype nlmode)
4981 {
4982         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
4983 }
4984
4985
4986 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
4987                                             struct hostapd_freq_params *freq)
4988 {
4989         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
4990                                                 freq);
4991 }
4992
4993
4994 static int wpa_driver_nl80211_get_capa(void *priv,
4995                                        struct wpa_driver_capa *capa)
4996 {
4997         struct i802_bss *bss = priv;
4998         struct wpa_driver_nl80211_data *drv = bss->drv;
4999
5000         if (!drv->has_capability)
5001                 return -1;
5002         os_memcpy(capa, &drv->capa, sizeof(*capa));
5003         if (drv->extended_capa && drv->extended_capa_mask) {
5004                 capa->extended_capa = drv->extended_capa;
5005                 capa->extended_capa_mask = drv->extended_capa_mask;
5006                 capa->extended_capa_len = drv->extended_capa_len;
5007         }
5008
5009         return 0;
5010 }
5011
5012
5013 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5014 {
5015         struct i802_bss *bss = priv;
5016         struct wpa_driver_nl80211_data *drv = bss->drv;
5017
5018         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5019                    bss->ifname, drv->operstate, state,
5020                    state ? "UP" : "DORMANT");
5021         drv->operstate = state;
5022         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5023                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5024 }
5025
5026
5027 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5028 {
5029         struct i802_bss *bss = priv;
5030         struct wpa_driver_nl80211_data *drv = bss->drv;
5031         struct nl_msg *msg;
5032         struct nl80211_sta_flag_update upd;
5033         int ret;
5034
5035         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5036                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5037                 return 0;
5038         }
5039
5040         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5041                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5042
5043         os_memset(&upd, 0, sizeof(upd));
5044         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5045         if (authorized)
5046                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5047
5048         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5049             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5050             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5051                 nlmsg_free(msg);
5052                 return -ENOBUFS;
5053         }
5054
5055         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5056         if (!ret)
5057                 return 0;
5058         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5059                    ret, strerror(-ret));
5060         return ret;
5061 }
5062
5063
5064 /* Set kernel driver on given frequency (MHz) */
5065 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5066 {
5067         struct i802_bss *bss = priv;
5068         return nl80211_set_channel(bss, freq, 0);
5069 }
5070
5071
5072 static inline int min_int(int a, int b)
5073 {
5074         if (a < b)
5075                 return a;
5076         return b;
5077 }
5078
5079
5080 static int get_key_handler(struct nl_msg *msg, void *arg)
5081 {
5082         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5083         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5084
5085         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5086                   genlmsg_attrlen(gnlh, 0), NULL);
5087
5088         /*
5089          * TODO: validate the key index and mac address!
5090          * Otherwise, there's a race condition as soon as
5091          * the kernel starts sending key notifications.
5092          */
5093
5094         if (tb[NL80211_ATTR_KEY_SEQ])
5095                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5096                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5097         return NL_SKIP;
5098 }
5099
5100
5101 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5102                            int idx, u8 *seq)
5103 {
5104         struct i802_bss *bss = priv;
5105         struct wpa_driver_nl80211_data *drv = bss->drv;
5106         struct nl_msg *msg;
5107
5108         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5109                                   NL80211_CMD_GET_KEY);
5110         if (!msg ||
5111             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5112             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5113                 nlmsg_free(msg);
5114                 return -ENOBUFS;
5115         }
5116
5117         memset(seq, 0, 6);
5118
5119         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5120 }
5121
5122
5123 static int i802_set_rts(void *priv, int rts)
5124 {
5125         struct i802_bss *bss = priv;
5126         struct wpa_driver_nl80211_data *drv = bss->drv;
5127         struct nl_msg *msg;
5128         int ret;
5129         u32 val;
5130
5131         if (rts >= 2347)
5132                 val = (u32) -1;
5133         else
5134                 val = rts;
5135
5136         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5137             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5138                 nlmsg_free(msg);
5139                 return -ENOBUFS;
5140         }
5141
5142         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5143         if (!ret)
5144                 return 0;
5145         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5146                    "%d (%s)", rts, ret, strerror(-ret));
5147         return ret;
5148 }
5149
5150
5151 static int i802_set_frag(void *priv, int frag)
5152 {
5153         struct i802_bss *bss = priv;
5154         struct wpa_driver_nl80211_data *drv = bss->drv;
5155         struct nl_msg *msg;
5156         int ret;
5157         u32 val;
5158
5159         if (frag >= 2346)
5160                 val = (u32) -1;
5161         else
5162                 val = frag;
5163
5164         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5165             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5166                 nlmsg_free(msg);
5167                 return -ENOBUFS;
5168         }
5169
5170         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5171         if (!ret)
5172                 return 0;
5173         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5174                    "%d: %d (%s)", frag, ret, strerror(-ret));
5175         return ret;
5176 }
5177
5178
5179 static int i802_flush(void *priv)
5180 {
5181         struct i802_bss *bss = priv;
5182         struct nl_msg *msg;
5183         int res;
5184
5185         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5186                    bss->ifname);
5187
5188         /*
5189          * XXX: FIX! this needs to flush all VLANs too
5190          */
5191         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5192         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5193         if (res) {
5194                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5195                            "(%s)", res, strerror(-res));
5196         }
5197         return res;
5198 }
5199
5200
5201 static int get_sta_handler(struct nl_msg *msg, void *arg)
5202 {
5203         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5204         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5205         struct hostap_sta_driver_data *data = arg;
5206         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5207         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5208                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5209                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5210                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5211                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5212                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5213                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5214         };
5215
5216         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5217                   genlmsg_attrlen(gnlh, 0), NULL);
5218
5219         /*
5220          * TODO: validate the interface and mac address!
5221          * Otherwise, there's a race condition as soon as
5222          * the kernel starts sending station notifications.
5223          */
5224
5225         if (!tb[NL80211_ATTR_STA_INFO]) {
5226                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5227                 return NL_SKIP;
5228         }
5229         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5230                              tb[NL80211_ATTR_STA_INFO],
5231                              stats_policy)) {
5232                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5233                 return NL_SKIP;
5234         }
5235
5236         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5237                 data->inactive_msec =
5238                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5239         if (stats[NL80211_STA_INFO_RX_BYTES])
5240                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5241         if (stats[NL80211_STA_INFO_TX_BYTES])
5242                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5243         if (stats[NL80211_STA_INFO_RX_PACKETS])
5244                 data->rx_packets =
5245                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5246         if (stats[NL80211_STA_INFO_TX_PACKETS])
5247                 data->tx_packets =
5248                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5249         if (stats[NL80211_STA_INFO_TX_FAILED])
5250                 data->tx_retry_failed =
5251                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5252
5253         return NL_SKIP;
5254 }
5255
5256 static int i802_read_sta_data(struct i802_bss *bss,
5257                               struct hostap_sta_driver_data *data,
5258                               const u8 *addr)
5259 {
5260         struct nl_msg *msg;
5261
5262         os_memset(data, 0, sizeof(*data));
5263
5264         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5265             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5266                 nlmsg_free(msg);
5267                 return -ENOBUFS;
5268         }
5269
5270         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5271 }
5272
5273
5274 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5275                                     int cw_min, int cw_max, int burst_time)
5276 {
5277         struct i802_bss *bss = priv;
5278         struct wpa_driver_nl80211_data *drv = bss->drv;
5279         struct nl_msg *msg;
5280         struct nlattr *txq, *params;
5281
5282         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5283         if (!msg)
5284                 return -1;
5285
5286         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5287         if (!txq)
5288                 goto fail;
5289
5290         /* We are only sending parameters for a single TXQ at a time */
5291         params = nla_nest_start(msg, 1);
5292         if (!params)
5293                 goto fail;
5294
5295         switch (queue) {
5296         case 0:
5297                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5298                         goto fail;
5299                 break;
5300         case 1:
5301                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5302                         goto fail;
5303                 break;
5304         case 2:
5305                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5306                         goto fail;
5307                 break;
5308         case 3:
5309                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5310                         goto fail;
5311                 break;
5312         }
5313         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5314          * 32 usec, so need to convert the value here. */
5315         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5316                         (burst_time * 100 + 16) / 32) ||
5317             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5318             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5319             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5320                 goto fail;
5321
5322         nla_nest_end(msg, params);
5323
5324         nla_nest_end(msg, txq);
5325
5326         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5327                 return 0;
5328         msg = NULL;
5329 fail:
5330         nlmsg_free(msg);
5331         return -1;
5332 }
5333
5334
5335 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5336                              const char *ifname, int vlan_id)
5337 {
5338         struct wpa_driver_nl80211_data *drv = bss->drv;
5339         struct nl_msg *msg;
5340         int ret;
5341
5342         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5343                    ", ifname=%s[%d], vlan_id=%d)",
5344                    bss->ifname, if_nametoindex(bss->ifname),
5345                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5346         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5347             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5348             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5349                 nlmsg_free(msg);
5350                 return -ENOBUFS;
5351         }
5352
5353         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5354         if (ret < 0) {
5355                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5356                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5357                            MAC2STR(addr), ifname, vlan_id, ret,
5358                            strerror(-ret));
5359         }
5360         return ret;
5361 }
5362
5363
5364 static int i802_get_inact_sec(void *priv, const u8 *addr)
5365 {
5366         struct hostap_sta_driver_data data;
5367         int ret;
5368
5369         data.inactive_msec = (unsigned long) -1;
5370         ret = i802_read_sta_data(priv, &data, addr);
5371         if (ret == -ENOENT)
5372                 return -ENOENT;
5373         if (ret || data.inactive_msec == (unsigned long) -1)
5374                 return -1;
5375         return data.inactive_msec / 1000;
5376 }
5377
5378
5379 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5380 {
5381 #if 0
5382         /* TODO */
5383 #endif
5384         return 0;
5385 }
5386
5387
5388 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5389                            int reason)
5390 {
5391         struct i802_bss *bss = priv;
5392         struct wpa_driver_nl80211_data *drv = bss->drv;
5393         struct ieee80211_mgmt mgmt;
5394
5395         if (is_mesh_interface(drv->nlmode))
5396                 return -1;
5397
5398         if (drv->device_ap_sme)
5399                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5400
5401         memset(&mgmt, 0, sizeof(mgmt));
5402         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5403                                           WLAN_FC_STYPE_DEAUTH);
5404         memcpy(mgmt.da, addr, ETH_ALEN);
5405         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5406         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5407         mgmt.u.deauth.reason_code = host_to_le16(reason);
5408         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5409                                             IEEE80211_HDRLEN +
5410                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5411                                             0);
5412 }
5413
5414
5415 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5416                              int reason)
5417 {
5418         struct i802_bss *bss = priv;
5419         struct wpa_driver_nl80211_data *drv = bss->drv;
5420         struct ieee80211_mgmt mgmt;
5421
5422         if (is_mesh_interface(drv->nlmode))
5423                 return -1;
5424
5425         if (drv->device_ap_sme)
5426                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5427
5428         memset(&mgmt, 0, sizeof(mgmt));
5429         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5430                                           WLAN_FC_STYPE_DISASSOC);
5431         memcpy(mgmt.da, addr, ETH_ALEN);
5432         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5433         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5434         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5435         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5436                                             IEEE80211_HDRLEN +
5437                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5438                                             0);
5439 }
5440
5441
5442 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5443 {
5444         char buf[200], *pos, *end;
5445         int i, res;
5446
5447         pos = buf;
5448         end = pos + sizeof(buf);
5449
5450         for (i = 0; i < drv->num_if_indices; i++) {
5451                 if (!drv->if_indices[i])
5452                         continue;
5453                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5454                 if (os_snprintf_error(end - pos, res))
5455                         break;
5456                 pos += res;
5457         }
5458         *pos = '\0';
5459
5460         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5461                    drv->num_if_indices, buf);
5462 }
5463
5464
5465 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5466 {
5467         int i;
5468         int *old;
5469
5470         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5471                    ifidx);
5472         if (have_ifidx(drv, ifidx)) {
5473                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5474                            ifidx);
5475                 return;
5476         }
5477         for (i = 0; i < drv->num_if_indices; i++) {
5478                 if (drv->if_indices[i] == 0) {
5479                         drv->if_indices[i] = ifidx;
5480                         dump_ifidx(drv);
5481                         return;
5482                 }
5483         }
5484
5485         if (drv->if_indices != drv->default_if_indices)
5486                 old = drv->if_indices;
5487         else
5488                 old = NULL;
5489
5490         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5491                                            sizeof(int));
5492         if (!drv->if_indices) {
5493                 if (!old)
5494                         drv->if_indices = drv->default_if_indices;
5495                 else
5496                         drv->if_indices = old;
5497                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5498                            "interfaces");
5499                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5500                 return;
5501         } else if (!old)
5502                 os_memcpy(drv->if_indices, drv->default_if_indices,
5503                           sizeof(drv->default_if_indices));
5504         drv->if_indices[drv->num_if_indices] = ifidx;
5505         drv->num_if_indices++;
5506         dump_ifidx(drv);
5507 }
5508
5509
5510 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5511 {
5512         int i;
5513
5514         for (i = 0; i < drv->num_if_indices; i++) {
5515                 if (drv->if_indices[i] == ifidx) {
5516                         drv->if_indices[i] = 0;
5517                         break;
5518                 }
5519         }
5520         dump_ifidx(drv);
5521 }
5522
5523
5524 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5525 {
5526         int i;
5527
5528         for (i = 0; i < drv->num_if_indices; i++)
5529                 if (drv->if_indices[i] == ifidx)
5530                         return 1;
5531
5532         return 0;
5533 }
5534
5535
5536 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5537                             const char *bridge_ifname, char *ifname_wds)
5538 {
5539         struct i802_bss *bss = priv;
5540         struct wpa_driver_nl80211_data *drv = bss->drv;
5541         char name[IFNAMSIZ + 1];
5542
5543         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5544         if (ifname_wds)
5545                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5546
5547         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5548                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5549         if (val) {
5550                 if (!if_nametoindex(name)) {
5551                         if (nl80211_create_iface(drv, name,
5552                                                  NL80211_IFTYPE_AP_VLAN,
5553                                                  bss->addr, 1, NULL, NULL, 0) <
5554                             0)
5555                                 return -1;
5556                         if (bridge_ifname &&
5557                             linux_br_add_if(drv->global->ioctl_sock,
5558                                             bridge_ifname, name) < 0)
5559                                 return -1;
5560                 }
5561                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5562                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5563                                    "interface %s up", name);
5564                 }
5565                 return i802_set_sta_vlan(priv, addr, name, 0);
5566         } else {
5567                 if (bridge_ifname)
5568                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5569                                         name);
5570
5571                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5572                 nl80211_remove_iface(drv, if_nametoindex(name));
5573                 return 0;
5574         }
5575 }
5576
5577
5578 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5579 {
5580         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5581         struct sockaddr_ll lladdr;
5582         unsigned char buf[3000];
5583         int len;
5584         socklen_t fromlen = sizeof(lladdr);
5585
5586         len = recvfrom(sock, buf, sizeof(buf), 0,
5587                        (struct sockaddr *)&lladdr, &fromlen);
5588         if (len < 0) {
5589                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5590                            strerror(errno));
5591                 return;
5592         }
5593
5594         if (have_ifidx(drv, lladdr.sll_ifindex))
5595                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5596 }
5597
5598
5599 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5600                              struct i802_bss *bss,
5601                              const char *brname, const char *ifname)
5602 {
5603         int br_ifindex;
5604         char in_br[IFNAMSIZ];
5605
5606         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5607         br_ifindex = if_nametoindex(brname);
5608         if (br_ifindex == 0) {
5609                 /*
5610                  * Bridge was configured, but the bridge device does
5611                  * not exist. Try to add it now.
5612                  */
5613                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5614                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5615                                    "bridge interface %s: %s",
5616                                    brname, strerror(errno));
5617                         return -1;
5618                 }
5619                 bss->added_bridge = 1;
5620                 br_ifindex = if_nametoindex(brname);
5621                 add_ifidx(drv, br_ifindex);
5622         }
5623         bss->br_ifindex = br_ifindex;
5624
5625         if (linux_br_get(in_br, ifname) == 0) {
5626                 if (os_strcmp(in_br, brname) == 0)
5627                         return 0; /* already in the bridge */
5628
5629                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5630                            "bridge %s", ifname, in_br);
5631                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5632                     0) {
5633                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5634                                    "remove interface %s from bridge "
5635                                    "%s: %s",
5636                                    ifname, brname, strerror(errno));
5637                         return -1;
5638                 }
5639         }
5640
5641         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5642                    ifname, brname);
5643         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5644                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5645                            "into bridge %s: %s",
5646                            ifname, brname, strerror(errno));
5647                 return -1;
5648         }
5649         bss->added_if_into_bridge = 1;
5650
5651         return 0;
5652 }
5653
5654
5655 static void *i802_init(struct hostapd_data *hapd,
5656                        struct wpa_init_params *params)
5657 {
5658         struct wpa_driver_nl80211_data *drv;
5659         struct i802_bss *bss;
5660         size_t i;
5661         char brname[IFNAMSIZ];
5662         int ifindex, br_ifindex;
5663         int br_added = 0;
5664
5665         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5666                                           params->global_priv, 1,
5667                                           params->bssid, params->driver_params);
5668         if (bss == NULL)
5669                 return NULL;
5670
5671         drv = bss->drv;
5672
5673         if (linux_br_get(brname, params->ifname) == 0) {
5674                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5675                            params->ifname, brname);
5676                 br_ifindex = if_nametoindex(brname);
5677                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5678         } else {
5679                 brname[0] = '\0';
5680                 br_ifindex = 0;
5681         }
5682         bss->br_ifindex = br_ifindex;
5683
5684         for (i = 0; i < params->num_bridge; i++) {
5685                 if (params->bridge[i]) {
5686                         ifindex = if_nametoindex(params->bridge[i]);
5687                         if (ifindex)
5688                                 add_ifidx(drv, ifindex);
5689                         if (ifindex == br_ifindex)
5690                                 br_added = 1;
5691                 }
5692         }
5693
5694         /* start listening for EAPOL on the default AP interface */
5695         add_ifidx(drv, drv->ifindex);
5696
5697         if (params->num_bridge && params->bridge[0]) {
5698                 if (i802_check_bridge(drv, bss, params->bridge[0],
5699                                       params->ifname) < 0)
5700                         goto failed;
5701                 if (os_strcmp(params->bridge[0], brname) != 0)
5702                         br_added = 1;
5703         }
5704
5705         if (!br_added && br_ifindex &&
5706             (params->num_bridge == 0 || !params->bridge[0]))
5707                 add_ifidx(drv, br_ifindex);
5708
5709 #ifdef CONFIG_LIBNL3_ROUTE
5710         if (bss->added_if_into_bridge) {
5711                 drv->rtnl_sk = nl_socket_alloc();
5712                 if (drv->rtnl_sk == NULL) {
5713                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5714                         goto failed;
5715                 }
5716
5717                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5718                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5719                                    strerror(errno));
5720                         goto failed;
5721                 }
5722         }
5723 #endif /* CONFIG_LIBNL3_ROUTE */
5724
5725         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5726         if (drv->eapol_sock < 0) {
5727                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5728                            strerror(errno));
5729                 goto failed;
5730         }
5731
5732         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5733         {
5734                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5735                 goto failed;
5736         }
5737
5738         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5739                                params->own_addr))
5740                 goto failed;
5741         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5742
5743         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5744
5745         return bss;
5746
5747 failed:
5748         wpa_driver_nl80211_deinit(bss);
5749         return NULL;
5750 }
5751
5752
5753 static void i802_deinit(void *priv)
5754 {
5755         struct i802_bss *bss = priv;
5756         wpa_driver_nl80211_deinit(bss);
5757 }
5758
5759
5760 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5761         enum wpa_driver_if_type type)
5762 {
5763         switch (type) {
5764         case WPA_IF_STATION:
5765                 return NL80211_IFTYPE_STATION;
5766         case WPA_IF_P2P_CLIENT:
5767         case WPA_IF_P2P_GROUP:
5768                 return NL80211_IFTYPE_P2P_CLIENT;
5769         case WPA_IF_AP_VLAN:
5770                 return NL80211_IFTYPE_AP_VLAN;
5771         case WPA_IF_AP_BSS:
5772                 return NL80211_IFTYPE_AP;
5773         case WPA_IF_P2P_GO:
5774                 return NL80211_IFTYPE_P2P_GO;
5775         case WPA_IF_P2P_DEVICE:
5776                 return NL80211_IFTYPE_P2P_DEVICE;
5777         case WPA_IF_MESH:
5778                 return NL80211_IFTYPE_MESH_POINT;
5779         }
5780         return -1;
5781 }
5782
5783
5784 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5785
5786 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5787 {
5788         struct wpa_driver_nl80211_data *drv;
5789         dl_list_for_each(drv, &global->interfaces,
5790                          struct wpa_driver_nl80211_data, list) {
5791                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5792                         return 1;
5793         }
5794         return 0;
5795 }
5796
5797
5798 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5799 {
5800         unsigned int idx;
5801
5802         if (!drv->global)
5803                 return -1;
5804
5805         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5806         for (idx = 0; idx < 64; idx++) {
5807                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5808                 new_addr[0] ^= idx << 2;
5809                 if (!nl80211_addr_in_use(drv->global, new_addr))
5810                         break;
5811         }
5812         if (idx == 64)
5813                 return -1;
5814
5815         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5816                    MACSTR, MAC2STR(new_addr));
5817
5818         return 0;
5819 }
5820
5821 #endif /* CONFIG_P2P || CONFIG_MESH */
5822
5823
5824 struct wdev_info {
5825         u64 wdev_id;
5826         int wdev_id_set;
5827         u8 macaddr[ETH_ALEN];
5828 };
5829
5830 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5831 {
5832         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5833         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5834         struct wdev_info *wi = arg;
5835
5836         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5837                   genlmsg_attrlen(gnlh, 0), NULL);
5838         if (tb[NL80211_ATTR_WDEV]) {
5839                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5840                 wi->wdev_id_set = 1;
5841         }
5842
5843         if (tb[NL80211_ATTR_MAC])
5844                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5845                           ETH_ALEN);
5846
5847         return NL_SKIP;
5848 }
5849
5850
5851 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5852                                      const char *ifname, const u8 *addr,
5853                                      void *bss_ctx, void **drv_priv,
5854                                      char *force_ifname, u8 *if_addr,
5855                                      const char *bridge, int use_existing)
5856 {
5857         enum nl80211_iftype nlmode;
5858         struct i802_bss *bss = priv;
5859         struct wpa_driver_nl80211_data *drv = bss->drv;
5860         int ifidx;
5861         int added = 1;
5862
5863         if (addr)
5864                 os_memcpy(if_addr, addr, ETH_ALEN);
5865         nlmode = wpa_driver_nl80211_if_type(type);
5866         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5867                 struct wdev_info p2pdev_info;
5868
5869                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5870                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5871                                              0, nl80211_wdev_handler,
5872                                              &p2pdev_info, use_existing);
5873                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5874                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5875                                    ifname);
5876                         return -1;
5877                 }
5878
5879                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5880                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5881                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5882                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5883                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5884                            ifname,
5885                            (long long unsigned int) p2pdev_info.wdev_id);
5886         } else {
5887                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5888                                              0, NULL, NULL, use_existing);
5889                 if (use_existing && ifidx == -ENFILE) {
5890                         added = 0;
5891                         ifidx = if_nametoindex(ifname);
5892                 } else if (ifidx < 0) {
5893                         return -1;
5894                 }
5895         }
5896
5897         if (!addr) {
5898                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5899                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5900                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5901                                             bss->ifname, if_addr) < 0) {
5902                         if (added)
5903                                 nl80211_remove_iface(drv, ifidx);
5904                         return -1;
5905                 }
5906         }
5907
5908 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5909         if (!addr &&
5910             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5911              type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
5912                 /* Enforce unique P2P Interface Address */
5913                 u8 new_addr[ETH_ALEN];
5914
5915                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5916                                        new_addr) < 0) {
5917                         if (added)
5918                                 nl80211_remove_iface(drv, ifidx);
5919                         return -1;
5920                 }
5921                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5922                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5923                                    "for %s interface", type == WPA_IF_MESH ?
5924                                    "mesh" : "P2P group");
5925                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5926                                 if (added)
5927                                         nl80211_remove_iface(drv, ifidx);
5928                                 return -1;
5929                         }
5930                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5931                                                new_addr) < 0) {
5932                                 if (added)
5933                                         nl80211_remove_iface(drv, ifidx);
5934                                 return -1;
5935                         }
5936                 }
5937                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5938         }
5939 #endif /* CONFIG_P2P || CONFIG_MESH */
5940
5941         if (type == WPA_IF_AP_BSS) {
5942                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5943                 if (new_bss == NULL) {
5944                         if (added)
5945                                 nl80211_remove_iface(drv, ifidx);
5946                         return -1;
5947                 }
5948
5949                 if (bridge &&
5950                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5951                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5952                                    "interface %s to a bridge %s",
5953                                    ifname, bridge);
5954                         if (added)
5955                                 nl80211_remove_iface(drv, ifidx);
5956                         os_free(new_bss);
5957                         return -1;
5958                 }
5959
5960                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5961                 {
5962                         if (added)
5963                                 nl80211_remove_iface(drv, ifidx);
5964                         os_free(new_bss);
5965                         return -1;
5966                 }
5967                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5968                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5969                 new_bss->ifindex = ifidx;
5970                 new_bss->drv = drv;
5971                 new_bss->next = drv->first_bss->next;
5972                 new_bss->freq = drv->first_bss->freq;
5973                 new_bss->ctx = bss_ctx;
5974                 new_bss->added_if = added;
5975                 drv->first_bss->next = new_bss;
5976                 if (drv_priv)
5977                         *drv_priv = new_bss;
5978                 nl80211_init_bss(new_bss);
5979
5980                 /* Subscribe management frames for this WPA_IF_AP_BSS */
5981                 if (nl80211_setup_ap(new_bss))
5982                         return -1;
5983         }
5984
5985         if (drv->global)
5986                 drv->global->if_add_ifindex = ifidx;
5987
5988         /*
5989          * Some virtual interfaces need to process EAPOL packets and events on
5990          * the parent interface. This is used mainly with hostapd.
5991          */
5992         if (ifidx > 0 &&
5993             (drv->hostapd ||
5994              nlmode == NL80211_IFTYPE_AP_VLAN ||
5995              nlmode == NL80211_IFTYPE_WDS ||
5996              nlmode == NL80211_IFTYPE_MONITOR))
5997                 add_ifidx(drv, ifidx);
5998
5999         return 0;
6000 }
6001
6002
6003 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6004                                         enum wpa_driver_if_type type,
6005                                         const char *ifname)
6006 {
6007         struct wpa_driver_nl80211_data *drv = bss->drv;
6008         int ifindex = if_nametoindex(ifname);
6009
6010         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6011                    __func__, type, ifname, ifindex, bss->added_if);
6012         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6013                 nl80211_remove_iface(drv, ifindex);
6014         else if (ifindex > 0 && !bss->added_if) {
6015                 struct wpa_driver_nl80211_data *drv2;
6016                 dl_list_for_each(drv2, &drv->global->interfaces,
6017                                  struct wpa_driver_nl80211_data, list)
6018                         del_ifidx(drv2, ifindex);
6019         }
6020
6021         if (type != WPA_IF_AP_BSS)
6022                 return 0;
6023
6024         if (bss->added_if_into_bridge) {
6025                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6026                                     bss->ifname) < 0)
6027                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6028                                    "interface %s from bridge %s: %s",
6029                                    bss->ifname, bss->brname, strerror(errno));
6030         }
6031         if (bss->added_bridge) {
6032                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6033                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6034                                    "bridge %s: %s",
6035                                    bss->brname, strerror(errno));
6036         }
6037
6038         if (bss != drv->first_bss) {
6039                 struct i802_bss *tbss;
6040
6041                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6042                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6043                         if (tbss->next == bss) {
6044                                 tbss->next = bss->next;
6045                                 /* Unsubscribe management frames */
6046                                 nl80211_teardown_ap(bss);
6047                                 nl80211_destroy_bss(bss);
6048                                 if (!bss->added_if)
6049                                         i802_set_iface_flags(bss, 0);
6050                                 os_free(bss);
6051                                 bss = NULL;
6052                                 break;
6053                         }
6054                 }
6055                 if (bss)
6056                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6057                                    "BSS %p in the list", __func__, bss);
6058         } else {
6059                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6060                 nl80211_teardown_ap(bss);
6061                 if (!bss->added_if && !drv->first_bss->next)
6062                         wpa_driver_nl80211_del_beacon(drv);
6063                 nl80211_destroy_bss(bss);
6064                 if (!bss->added_if)
6065                         i802_set_iface_flags(bss, 0);
6066                 if (drv->first_bss->next) {
6067                         drv->first_bss = drv->first_bss->next;
6068                         drv->ctx = drv->first_bss->ctx;
6069                         os_free(bss);
6070                 } else {
6071                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6072                 }
6073         }
6074
6075         return 0;
6076 }
6077
6078
6079 static int cookie_handler(struct nl_msg *msg, void *arg)
6080 {
6081         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6082         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6083         u64 *cookie = arg;
6084         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6085                   genlmsg_attrlen(gnlh, 0), NULL);
6086         if (tb[NL80211_ATTR_COOKIE])
6087                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6088         return NL_SKIP;
6089 }
6090
6091
6092 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6093                                   unsigned int freq, unsigned int wait,
6094                                   const u8 *buf, size_t buf_len,
6095                                   u64 *cookie_out, int no_cck, int no_ack,
6096                                   int offchanok)
6097 {
6098         struct wpa_driver_nl80211_data *drv = bss->drv;
6099         struct nl_msg *msg;
6100         u64 cookie;
6101         int ret = -1;
6102
6103         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6104                    "no_ack=%d offchanok=%d",
6105                    freq, wait, no_cck, no_ack, offchanok);
6106         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6107
6108         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6109             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6110             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6111             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6112                            drv->test_use_roc_tx) &&
6113              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6114             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6115             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6116             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6117                 goto fail;
6118
6119         cookie = 0;
6120         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6121         msg = NULL;
6122         if (ret) {
6123                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6124                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6125                            freq, wait);
6126         } else {
6127                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6128                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6129                            (long long unsigned int) cookie);
6130
6131                 if (cookie_out)
6132                         *cookie_out = no_ack ? (u64) -1 : cookie;
6133         }
6134
6135 fail:
6136         nlmsg_free(msg);
6137         return ret;
6138 }
6139
6140
6141 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6142                                           unsigned int freq,
6143                                           unsigned int wait_time,
6144                                           const u8 *dst, const u8 *src,
6145                                           const u8 *bssid,
6146                                           const u8 *data, size_t data_len,
6147                                           int no_cck)
6148 {
6149         struct wpa_driver_nl80211_data *drv = bss->drv;
6150         int ret = -1;
6151         u8 *buf;
6152         struct ieee80211_hdr *hdr;
6153
6154         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6155                    "freq=%u MHz wait=%d ms no_cck=%d)",
6156                    drv->ifindex, freq, wait_time, no_cck);
6157
6158         buf = os_zalloc(24 + data_len);
6159         if (buf == NULL)
6160                 return ret;
6161         os_memcpy(buf + 24, data, data_len);
6162         hdr = (struct ieee80211_hdr *) buf;
6163         hdr->frame_control =
6164                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6165         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6166         os_memcpy(hdr->addr2, src, ETH_ALEN);
6167         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6168
6169         if (is_ap_interface(drv->nlmode) &&
6170             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6171              (int) freq == bss->freq || drv->device_ap_sme ||
6172              !drv->use_monitor))
6173                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6174                                                    0, freq, no_cck, 1,
6175                                                    wait_time);
6176         else
6177                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6178                                              24 + data_len,
6179                                              &drv->send_action_cookie,
6180                                              no_cck, 0, 1);
6181
6182         os_free(buf);
6183         return ret;
6184 }
6185
6186
6187 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6188 {
6189         struct i802_bss *bss = priv;
6190         struct wpa_driver_nl80211_data *drv = bss->drv;
6191         struct nl_msg *msg;
6192         int ret;
6193
6194         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6195                    (long long unsigned int) drv->send_action_cookie);
6196         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6197             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6198                 nlmsg_free(msg);
6199                 return;
6200         }
6201
6202         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6203         if (ret)
6204                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6205                            "(%s)", ret, strerror(-ret));
6206 }
6207
6208
6209 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6210                                                 unsigned int duration)
6211 {
6212         struct i802_bss *bss = priv;
6213         struct wpa_driver_nl80211_data *drv = bss->drv;
6214         struct nl_msg *msg;
6215         int ret;
6216         u64 cookie;
6217
6218         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6219             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6220             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6221                 nlmsg_free(msg);
6222                 return -1;
6223         }
6224
6225         cookie = 0;
6226         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6227         if (ret == 0) {
6228                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6229                            "0x%llx for freq=%u MHz duration=%u",
6230                            (long long unsigned int) cookie, freq, duration);
6231                 drv->remain_on_chan_cookie = cookie;
6232                 drv->pending_remain_on_chan = 1;
6233                 return 0;
6234         }
6235         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6236                    "(freq=%d duration=%u): %d (%s)",
6237                    freq, duration, ret, strerror(-ret));
6238         return -1;
6239 }
6240
6241
6242 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6243 {
6244         struct i802_bss *bss = priv;
6245         struct wpa_driver_nl80211_data *drv = bss->drv;
6246         struct nl_msg *msg;
6247         int ret;
6248
6249         if (!drv->pending_remain_on_chan) {
6250                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6251                            "to cancel");
6252                 return -1;
6253         }
6254
6255         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6256                    "0x%llx",
6257                    (long long unsigned int) drv->remain_on_chan_cookie);
6258
6259         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6260         if (!msg ||
6261             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6262                 nlmsg_free(msg);
6263                 return -1;
6264         }
6265
6266         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6267         if (ret == 0)
6268                 return 0;
6269         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6270                    "%d (%s)", ret, strerror(-ret));
6271         return -1;
6272 }
6273
6274
6275 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6276 {
6277         struct wpa_driver_nl80211_data *drv = bss->drv;
6278
6279         if (!report) {
6280                 if (bss->nl_preq && drv->device_ap_sme &&
6281                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6282                     !bss->static_ap) {
6283                         /*
6284                          * Do not disable Probe Request reporting that was
6285                          * enabled in nl80211_setup_ap().
6286                          */
6287                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6288                                    "Probe Request reporting nl_preq=%p while "
6289                                    "in AP mode", bss->nl_preq);
6290                 } else if (bss->nl_preq) {
6291                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6292                                    "reporting nl_preq=%p", bss->nl_preq);
6293                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6294                 }
6295                 return 0;
6296         }
6297
6298         if (bss->nl_preq) {
6299                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6300                            "already on! nl_preq=%p", bss->nl_preq);
6301                 return 0;
6302         }
6303
6304         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6305         if (bss->nl_preq == NULL)
6306                 return -1;
6307         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6308                    "reporting nl_preq=%p", bss->nl_preq);
6309
6310         if (nl80211_register_frame(bss, bss->nl_preq,
6311                                    (WLAN_FC_TYPE_MGMT << 2) |
6312                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6313                                    NULL, 0) < 0)
6314                 goto out_err;
6315
6316         nl80211_register_eloop_read(&bss->nl_preq,
6317                                     wpa_driver_nl80211_event_receive,
6318                                     bss->nl_cb);
6319
6320         return 0;
6321
6322  out_err:
6323         nl_destroy_handles(&bss->nl_preq);
6324         return -1;
6325 }
6326
6327
6328 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6329                                      int ifindex, int disabled)
6330 {
6331         struct nl_msg *msg;
6332         struct nlattr *bands, *band;
6333         int ret;
6334
6335         wpa_printf(MSG_DEBUG,
6336                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6337                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6338                    "no NL80211_TXRATE_LEGACY constraint");
6339
6340         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6341                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6342         if (!msg)
6343                 return -1;
6344
6345         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6346         if (!bands)
6347                 goto fail;
6348
6349         /*
6350          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6351          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6352          * rates. All 5 GHz rates are left enabled.
6353          */
6354         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6355         if (!band ||
6356             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6357                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6358                 goto fail;
6359         nla_nest_end(msg, band);
6360
6361         nla_nest_end(msg, bands);
6362
6363         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6364         if (ret) {
6365                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6366                            "(%s)", ret, strerror(-ret));
6367         } else
6368                 drv->disabled_11b_rates = disabled;
6369
6370         return ret;
6371
6372 fail:
6373         nlmsg_free(msg);
6374         return -1;
6375 }
6376
6377
6378 static int wpa_driver_nl80211_deinit_ap(void *priv)
6379 {
6380         struct i802_bss *bss = priv;
6381         struct wpa_driver_nl80211_data *drv = bss->drv;
6382         if (!is_ap_interface(drv->nlmode))
6383                 return -1;
6384         wpa_driver_nl80211_del_beacon(drv);
6385         bss->beacon_set = 0;
6386
6387         /*
6388          * If the P2P GO interface was dynamically added, then it is
6389          * possible that the interface change to station is not possible.
6390          */
6391         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6392                 return 0;
6393
6394         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6395 }
6396
6397
6398 static int wpa_driver_nl80211_stop_ap(void *priv)
6399 {
6400         struct i802_bss *bss = priv;
6401         struct wpa_driver_nl80211_data *drv = bss->drv;
6402         if (!is_ap_interface(drv->nlmode))
6403                 return -1;
6404         wpa_driver_nl80211_del_beacon(drv);
6405         bss->beacon_set = 0;
6406         return 0;
6407 }
6408
6409
6410 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6411 {
6412         struct i802_bss *bss = priv;
6413         struct wpa_driver_nl80211_data *drv = bss->drv;
6414         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6415                 return -1;
6416
6417         /*
6418          * If the P2P Client interface was dynamically added, then it is
6419          * possible that the interface change to station is not possible.
6420          */
6421         if (bss->if_dynamic)
6422                 return 0;
6423
6424         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6425 }
6426
6427
6428 static void wpa_driver_nl80211_resume(void *priv)
6429 {
6430         struct i802_bss *bss = priv;
6431
6432         if (i802_set_iface_flags(bss, 1))
6433                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6434 }
6435
6436
6437 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6438 {
6439         struct i802_bss *bss = priv;
6440         struct wpa_driver_nl80211_data *drv = bss->drv;
6441         struct nl_msg *msg;
6442         struct nlattr *cqm;
6443
6444         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6445                    "hysteresis=%d", threshold, hysteresis);
6446
6447         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6448             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6449             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6450             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6451                 nlmsg_free(msg);
6452                 return -1;
6453         }
6454         nla_nest_end(msg, cqm);
6455
6456         return send_and_recv_msgs(drv, msg, NULL, NULL);
6457 }
6458
6459
6460 static int get_channel_width(struct nl_msg *msg, void *arg)
6461 {
6462         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6463         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6464         struct wpa_signal_info *sig_change = arg;
6465
6466         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6467                   genlmsg_attrlen(gnlh, 0), NULL);
6468
6469         sig_change->center_frq1 = -1;
6470         sig_change->center_frq2 = -1;
6471         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6472
6473         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6474                 sig_change->chanwidth = convert2width(
6475                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6476                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6477                         sig_change->center_frq1 =
6478                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6479                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6480                         sig_change->center_frq2 =
6481                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6482         }
6483
6484         return NL_SKIP;
6485 }
6486
6487
6488 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6489                                      struct wpa_signal_info *sig)
6490 {
6491         struct nl_msg *msg;
6492
6493         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6494         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6495 }
6496
6497
6498 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6499 {
6500         struct i802_bss *bss = priv;
6501         struct wpa_driver_nl80211_data *drv = bss->drv;
6502         int res;
6503
6504         os_memset(si, 0, sizeof(*si));
6505         res = nl80211_get_link_signal(drv, si);
6506         if (res != 0)
6507                 return res;
6508
6509         res = nl80211_get_channel_width(drv, si);
6510         if (res != 0)
6511                 return res;
6512
6513         return nl80211_get_link_noise(drv, si);
6514 }
6515
6516
6517 static int wpa_driver_nl80211_shared_freq(void *priv)
6518 {
6519         struct i802_bss *bss = priv;
6520         struct wpa_driver_nl80211_data *drv = bss->drv;
6521         struct wpa_driver_nl80211_data *driver;
6522         int freq = 0;
6523
6524         /*
6525          * If the same PHY is in connected state with some other interface,
6526          * then retrieve the assoc freq.
6527          */
6528         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
6529                    drv->phyname);
6530
6531         dl_list_for_each(driver, &drv->global->interfaces,
6532                          struct wpa_driver_nl80211_data, list) {
6533                 if (drv == driver ||
6534                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
6535                     !driver->associated)
6536                         continue;
6537
6538                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
6539                            MACSTR,
6540                            driver->phyname, driver->first_bss->ifname,
6541                            MAC2STR(driver->first_bss->addr));
6542                 if (is_ap_interface(driver->nlmode))
6543                         freq = driver->first_bss->freq;
6544                 else
6545                         freq = nl80211_get_assoc_freq(driver);
6546                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
6547                            drv->phyname, freq);
6548         }
6549
6550         if (!freq)
6551                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
6552                            "PHY (%s) in associated state", drv->phyname);
6553
6554         return freq;
6555 }
6556
6557
6558 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6559                               int encrypt)
6560 {
6561         struct i802_bss *bss = priv;
6562         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6563                                              0, 0, 0, 0);
6564 }
6565
6566
6567 static int nl80211_set_param(void *priv, const char *param)
6568 {
6569         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6570         if (param == NULL)
6571                 return 0;
6572
6573 #ifdef CONFIG_P2P
6574         if (os_strstr(param, "use_p2p_group_interface=1")) {
6575                 struct i802_bss *bss = priv;
6576                 struct wpa_driver_nl80211_data *drv = bss->drv;
6577
6578                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6579                            "interface");
6580                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6581                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6582         }
6583 #endif /* CONFIG_P2P */
6584
6585         if (os_strstr(param, "use_monitor=1")) {
6586                 struct i802_bss *bss = priv;
6587                 struct wpa_driver_nl80211_data *drv = bss->drv;
6588                 drv->use_monitor = 1;
6589         }
6590
6591         if (os_strstr(param, "force_connect_cmd=1")) {
6592                 struct i802_bss *bss = priv;
6593                 struct wpa_driver_nl80211_data *drv = bss->drv;
6594                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6595                 drv->force_connect_cmd = 1;
6596         }
6597
6598         if (os_strstr(param, "no_offchannel_tx=1")) {
6599                 struct i802_bss *bss = priv;
6600                 struct wpa_driver_nl80211_data *drv = bss->drv;
6601                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6602                 drv->test_use_roc_tx = 1;
6603         }
6604
6605         return 0;
6606 }
6607
6608
6609 static void * nl80211_global_init(void)
6610 {
6611         struct nl80211_global *global;
6612         struct netlink_config *cfg;
6613
6614         global = os_zalloc(sizeof(*global));
6615         if (global == NULL)
6616                 return NULL;
6617         global->ioctl_sock = -1;
6618         dl_list_init(&global->interfaces);
6619         global->if_add_ifindex = -1;
6620
6621         cfg = os_zalloc(sizeof(*cfg));
6622         if (cfg == NULL)
6623                 goto err;
6624
6625         cfg->ctx = global;
6626         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6627         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6628         global->netlink = netlink_init(cfg);
6629         if (global->netlink == NULL) {
6630                 os_free(cfg);
6631                 goto err;
6632         }
6633
6634         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6635                 goto err;
6636
6637         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6638         if (global->ioctl_sock < 0) {
6639                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6640                            strerror(errno));
6641                 goto err;
6642         }
6643
6644         return global;
6645
6646 err:
6647         nl80211_global_deinit(global);
6648         return NULL;
6649 }
6650
6651
6652 static void nl80211_global_deinit(void *priv)
6653 {
6654         struct nl80211_global *global = priv;
6655         if (global == NULL)
6656                 return;
6657         if (!dl_list_empty(&global->interfaces)) {
6658                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6659                            "nl80211_global_deinit",
6660                            dl_list_len(&global->interfaces));
6661         }
6662
6663         if (global->netlink)
6664                 netlink_deinit(global->netlink);
6665
6666         nl_destroy_handles(&global->nl);
6667
6668         if (global->nl_event)
6669                 nl80211_destroy_eloop_handle(&global->nl_event);
6670
6671         nl_cb_put(global->nl_cb);
6672
6673         if (global->ioctl_sock >= 0)
6674                 close(global->ioctl_sock);
6675
6676         os_free(global);
6677 }
6678
6679
6680 static const char * nl80211_get_radio_name(void *priv)
6681 {
6682         struct i802_bss *bss = priv;
6683         struct wpa_driver_nl80211_data *drv = bss->drv;
6684         return drv->phyname;
6685 }
6686
6687
6688 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6689                          const u8 *pmkid)
6690 {
6691         struct nl_msg *msg;
6692
6693         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6694             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6695             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6696                 nlmsg_free(msg);
6697                 return -ENOBUFS;
6698         }
6699
6700         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6701 }
6702
6703
6704 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6705 {
6706         struct i802_bss *bss = priv;
6707         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6708         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6709 }
6710
6711
6712 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6713 {
6714         struct i802_bss *bss = priv;
6715         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6716                    MAC2STR(bssid));
6717         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6718 }
6719
6720
6721 static int nl80211_flush_pmkid(void *priv)
6722 {
6723         struct i802_bss *bss = priv;
6724         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6725         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6726 }
6727
6728
6729 static void clean_survey_results(struct survey_results *survey_results)
6730 {
6731         struct freq_survey *survey, *tmp;
6732
6733         if (dl_list_empty(&survey_results->survey_list))
6734                 return;
6735
6736         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6737                               struct freq_survey, list) {
6738                 dl_list_del(&survey->list);
6739                 os_free(survey);
6740         }
6741 }
6742
6743
6744 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6745                        struct dl_list *survey_list)
6746 {
6747         struct freq_survey *survey;
6748
6749         survey = os_zalloc(sizeof(struct freq_survey));
6750         if  (!survey)
6751                 return;
6752
6753         survey->ifidx = ifidx;
6754         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6755         survey->filled = 0;
6756
6757         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6758                 survey->nf = (int8_t)
6759                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6760                 survey->filled |= SURVEY_HAS_NF;
6761         }
6762
6763         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6764                 survey->channel_time =
6765                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6766                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6767         }
6768
6769         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6770                 survey->channel_time_busy =
6771                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6772                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6773         }
6774
6775         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6776                 survey->channel_time_rx =
6777                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6778                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6779         }
6780
6781         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6782                 survey->channel_time_tx =
6783                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6784                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6785         }
6786
6787         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)",
6788                    survey->freq,
6789                    survey->nf,
6790                    (unsigned long int) survey->channel_time,
6791                    (unsigned long int) survey->channel_time_busy,
6792                    (unsigned long int) survey->channel_time_tx,
6793                    (unsigned long int) survey->channel_time_rx,
6794                    survey->filled);
6795
6796         dl_list_add_tail(survey_list, &survey->list);
6797 }
6798
6799
6800 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6801                            unsigned int freq_filter)
6802 {
6803         if (!freq_filter)
6804                 return 1;
6805
6806         return freq_filter == surveyed_freq;
6807 }
6808
6809
6810 static int survey_handler(struct nl_msg *msg, void *arg)
6811 {
6812         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6813         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6814         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6815         struct survey_results *survey_results;
6816         u32 surveyed_freq = 0;
6817         u32 ifidx;
6818
6819         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6820                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6821                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6822         };
6823
6824         survey_results = (struct survey_results *) arg;
6825
6826         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6827                   genlmsg_attrlen(gnlh, 0), NULL);
6828
6829         if (!tb[NL80211_ATTR_IFINDEX])
6830                 return NL_SKIP;
6831
6832         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6833
6834         if (!tb[NL80211_ATTR_SURVEY_INFO])
6835                 return NL_SKIP;
6836
6837         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6838                              tb[NL80211_ATTR_SURVEY_INFO],
6839                              survey_policy))
6840                 return NL_SKIP;
6841
6842         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6843                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6844                 return NL_SKIP;
6845         }
6846
6847         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6848
6849         if (!check_survey_ok(sinfo, surveyed_freq,
6850                              survey_results->freq_filter))
6851                 return NL_SKIP;
6852
6853         if (survey_results->freq_filter &&
6854             survey_results->freq_filter != surveyed_freq) {
6855                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6856                            surveyed_freq);
6857                 return NL_SKIP;
6858         }
6859
6860         add_survey(sinfo, ifidx, &survey_results->survey_list);
6861
6862         return NL_SKIP;
6863 }
6864
6865
6866 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6867 {
6868         struct i802_bss *bss = priv;
6869         struct wpa_driver_nl80211_data *drv = bss->drv;
6870         struct nl_msg *msg;
6871         int err;
6872         union wpa_event_data data;
6873         struct survey_results *survey_results;
6874
6875         os_memset(&data, 0, sizeof(data));
6876         survey_results = &data.survey_results;
6877
6878         dl_list_init(&survey_results->survey_list);
6879
6880         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6881         if (!msg)
6882                 return -ENOBUFS;
6883
6884         if (freq)
6885                 data.survey_results.freq_filter = freq;
6886
6887         do {
6888                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6889                 err = send_and_recv_msgs(drv, msg, survey_handler,
6890                                          survey_results);
6891         } while (err > 0);
6892
6893         if (err)
6894                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6895         else
6896                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6897
6898         clean_survey_results(survey_results);
6899         return err;
6900 }
6901
6902
6903 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
6904                                    const u8 *kck, size_t kck_len,
6905                                    const u8 *replay_ctr)
6906 {
6907         struct i802_bss *bss = priv;
6908         struct wpa_driver_nl80211_data *drv = bss->drv;
6909         struct nlattr *replay_nested;
6910         struct nl_msg *msg;
6911         int ret;
6912
6913         if (!drv->set_rekey_offload)
6914                 return;
6915
6916         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6917         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6918             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6919             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
6920             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
6921             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6922                     replay_ctr)) {
6923                 nl80211_nlmsg_clear(msg);
6924                 nlmsg_free(msg);
6925                 return;
6926         }
6927
6928         nla_nest_end(msg, replay_nested);
6929
6930         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6931         if (ret == -EOPNOTSUPP) {
6932                 wpa_printf(MSG_DEBUG,
6933                            "nl80211: Driver does not support rekey offload");
6934                 drv->set_rekey_offload = 0;
6935         }
6936 }
6937
6938
6939 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6940                                     const u8 *addr, int qos)
6941 {
6942         /* send data frame to poll STA and check whether
6943          * this frame is ACKed */
6944         struct {
6945                 struct ieee80211_hdr hdr;
6946                 u16 qos_ctl;
6947         } STRUCT_PACKED nulldata;
6948         size_t size;
6949
6950         /* Send data frame to poll STA and check whether this frame is ACKed */
6951
6952         os_memset(&nulldata, 0, sizeof(nulldata));
6953
6954         if (qos) {
6955                 nulldata.hdr.frame_control =
6956                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6957                                      WLAN_FC_STYPE_QOS_NULL);
6958                 size = sizeof(nulldata);
6959         } else {
6960                 nulldata.hdr.frame_control =
6961                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6962                                      WLAN_FC_STYPE_NULLFUNC);
6963                 size = sizeof(struct ieee80211_hdr);
6964         }
6965
6966         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6967         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6968         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6969         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6970
6971         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6972                                          0, 0) < 0)
6973                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6974                            "send poll frame");
6975 }
6976
6977 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6978                                 int qos)
6979 {
6980         struct i802_bss *bss = priv;
6981         struct wpa_driver_nl80211_data *drv = bss->drv;
6982         struct nl_msg *msg;
6983         int ret;
6984
6985         if (!drv->poll_command_supported) {
6986                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6987                 return;
6988         }
6989
6990         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6991             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6992                 nlmsg_free(msg);
6993                 return;
6994         }
6995
6996         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6997         if (ret < 0) {
6998                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
6999                            MACSTR " failed: ret=%d (%s)",
7000                            MAC2STR(addr), ret, strerror(-ret));
7001         }
7002 }
7003
7004
7005 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7006 {
7007         struct nl_msg *msg;
7008
7009         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
7010             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7011                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7012                 nlmsg_free(msg);
7013                 return -ENOBUFS;
7014         }
7015         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7016 }
7017
7018
7019 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7020                                      int ctwindow)
7021 {
7022         struct i802_bss *bss = priv;
7023
7024         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7025                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7026
7027         if (opp_ps != -1 || ctwindow != -1) {
7028 #ifdef ANDROID_P2P
7029                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7030 #else /* ANDROID_P2P */
7031                 return -1; /* Not yet supported */
7032 #endif /* ANDROID_P2P */
7033         }
7034
7035         if (legacy_ps == -1)
7036                 return 0;
7037         if (legacy_ps != 0 && legacy_ps != 1)
7038                 return -1; /* Not yet supported */
7039
7040         return nl80211_set_power_save(bss, legacy_ps);
7041 }
7042
7043
7044 static int nl80211_start_radar_detection(void *priv,
7045                                          struct hostapd_freq_params *freq)
7046 {
7047         struct i802_bss *bss = priv;
7048         struct wpa_driver_nl80211_data *drv = bss->drv;
7049         struct nl_msg *msg;
7050         int ret;
7051
7052         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)",
7053                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7054                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7055
7056         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7057                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7058                            "detection");
7059                 return -1;
7060         }
7061
7062         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7063             nl80211_put_freq_params(msg, freq) < 0) {
7064                 nlmsg_free(msg);
7065                 return -1;
7066         }
7067
7068         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7069         if (ret == 0)
7070                 return 0;
7071         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7072                    "%d (%s)", ret, strerror(-ret));
7073         return -1;
7074 }
7075
7076 #ifdef CONFIG_TDLS
7077
7078 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7079                                   u8 dialog_token, u16 status_code,
7080                                   u32 peer_capab, int initiator, const u8 *buf,
7081                                   size_t len)
7082 {
7083         struct i802_bss *bss = priv;
7084         struct wpa_driver_nl80211_data *drv = bss->drv;
7085         struct nl_msg *msg;
7086
7087         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7088                 return -EOPNOTSUPP;
7089
7090         if (!dst)
7091                 return -EINVAL;
7092
7093         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7094             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7095             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7096             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7097             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7098                 goto fail;
7099         if (peer_capab) {
7100                 /*
7101                  * The internal enum tdls_peer_capability definition is
7102                  * currently identical with the nl80211 enum
7103                  * nl80211_tdls_peer_capability, so no conversion is needed
7104                  * here.
7105                  */
7106                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7107                                 peer_capab))
7108                         goto fail;
7109         }
7110         if ((initiator &&
7111              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7112             nla_put(msg, NL80211_ATTR_IE, len, buf))
7113                 goto fail;
7114
7115         return send_and_recv_msgs(drv, msg, NULL, NULL);
7116
7117 fail:
7118         nlmsg_free(msg);
7119         return -ENOBUFS;
7120 }
7121
7122
7123 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7124 {
7125         struct i802_bss *bss = priv;
7126         struct wpa_driver_nl80211_data *drv = bss->drv;
7127         struct nl_msg *msg;
7128         enum nl80211_tdls_operation nl80211_oper;
7129
7130         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7131                 return -EOPNOTSUPP;
7132
7133         switch (oper) {
7134         case TDLS_DISCOVERY_REQ:
7135                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7136                 break;
7137         case TDLS_SETUP:
7138                 nl80211_oper = NL80211_TDLS_SETUP;
7139                 break;
7140         case TDLS_TEARDOWN:
7141                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7142                 break;
7143         case TDLS_ENABLE_LINK:
7144                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7145                 break;
7146         case TDLS_DISABLE_LINK:
7147                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7148                 break;
7149         case TDLS_ENABLE:
7150                 return 0;
7151         case TDLS_DISABLE:
7152                 return 0;
7153         default:
7154                 return -EINVAL;
7155         }
7156
7157         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7158             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7159             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7160                 nlmsg_free(msg);
7161                 return -ENOBUFS;
7162         }
7163
7164         return send_and_recv_msgs(drv, msg, NULL, NULL);
7165 }
7166
7167
7168 static int
7169 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7170                                    const struct hostapd_freq_params *params)
7171 {
7172         struct i802_bss *bss = priv;
7173         struct wpa_driver_nl80211_data *drv = bss->drv;
7174         struct nl_msg *msg;
7175         int ret = -ENOBUFS;
7176
7177         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7178             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7179                 return -EOPNOTSUPP;
7180
7181         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7182                    " oper_class=%u freq=%u",
7183                    MAC2STR(addr), oper_class, params->freq);
7184         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7185         if (!msg ||
7186             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7187             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7188             (ret = nl80211_put_freq_params(msg, params))) {
7189                 nlmsg_free(msg);
7190                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7191                 return ret;
7192         }
7193
7194         return send_and_recv_msgs(drv, msg, NULL, NULL);
7195 }
7196
7197
7198 static int
7199 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7200 {
7201         struct i802_bss *bss = priv;
7202         struct wpa_driver_nl80211_data *drv = bss->drv;
7203         struct nl_msg *msg;
7204
7205         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7206             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7207                 return -EOPNOTSUPP;
7208
7209         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7210                    MAC2STR(addr));
7211         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7212         if (!msg ||
7213             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7214                 nlmsg_free(msg);
7215                 wpa_printf(MSG_DEBUG,
7216                            "nl80211: Could not build TDLS cancel chan switch");
7217                 return -ENOBUFS;
7218         }
7219
7220         return send_and_recv_msgs(drv, msg, NULL, NULL);
7221 }
7222
7223 #endif /* CONFIG TDLS */
7224
7225
7226 static int driver_nl80211_set_key(const char *ifname, void *priv,
7227                                   enum wpa_alg alg, const u8 *addr,
7228                                   int key_idx, int set_tx,
7229                                   const u8 *seq, size_t seq_len,
7230                                   const u8 *key, size_t key_len)
7231 {
7232         struct i802_bss *bss = priv;
7233         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7234                                           set_tx, seq, seq_len, key, key_len);
7235 }
7236
7237
7238 static int driver_nl80211_scan2(void *priv,
7239                                 struct wpa_driver_scan_params *params)
7240 {
7241         struct i802_bss *bss = priv;
7242         return wpa_driver_nl80211_scan(bss, params);
7243 }
7244
7245
7246 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7247                                          int reason_code)
7248 {
7249         struct i802_bss *bss = priv;
7250         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7251 }
7252
7253
7254 static int driver_nl80211_authenticate(void *priv,
7255                                        struct wpa_driver_auth_params *params)
7256 {
7257         struct i802_bss *bss = priv;
7258         return wpa_driver_nl80211_authenticate(bss, params);
7259 }
7260
7261
7262 static void driver_nl80211_deinit(void *priv)
7263 {
7264         struct i802_bss *bss = priv;
7265         wpa_driver_nl80211_deinit(bss);
7266 }
7267
7268
7269 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7270                                     const char *ifname)
7271 {
7272         struct i802_bss *bss = priv;
7273         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7274 }
7275
7276
7277 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7278                                     size_t data_len, int noack)
7279 {
7280         struct i802_bss *bss = priv;
7281         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7282                                             0, 0, 0, 0);
7283 }
7284
7285
7286 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7287 {
7288         struct i802_bss *bss = priv;
7289         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7290 }
7291
7292
7293 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7294                                        const char *ifname, int vlan_id)
7295 {
7296         struct i802_bss *bss = priv;
7297         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7298 }
7299
7300
7301 static int driver_nl80211_read_sta_data(void *priv,
7302                                         struct hostap_sta_driver_data *data,
7303                                         const u8 *addr)
7304 {
7305         struct i802_bss *bss = priv;
7306         return i802_read_sta_data(bss, data, addr);
7307 }
7308
7309
7310 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7311                                       unsigned int wait_time,
7312                                       const u8 *dst, const u8 *src,
7313                                       const u8 *bssid,
7314                                       const u8 *data, size_t data_len,
7315                                       int no_cck)
7316 {
7317         struct i802_bss *bss = priv;
7318         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7319                                               bssid, data, data_len, no_cck);
7320 }
7321
7322
7323 static int driver_nl80211_probe_req_report(void *priv, int report)
7324 {
7325         struct i802_bss *bss = priv;
7326         return wpa_driver_nl80211_probe_req_report(bss, report);
7327 }
7328
7329
7330 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7331                                             const u8 *ies, size_t ies_len)
7332 {
7333         int ret;
7334         struct nl_msg *msg;
7335         struct i802_bss *bss = priv;
7336         struct wpa_driver_nl80211_data *drv = bss->drv;
7337         u16 mdid = WPA_GET_LE16(md);
7338
7339         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7340         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7341             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7342             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7343                 nlmsg_free(msg);
7344                 return -ENOBUFS;
7345         }
7346
7347         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7348         if (ret) {
7349                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7350                            "err=%d (%s)", ret, strerror(-ret));
7351         }
7352
7353         return ret;
7354 }
7355
7356
7357 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7358 {
7359         struct i802_bss *bss = priv;
7360         struct wpa_driver_nl80211_data *drv = bss->drv;
7361
7362         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7363                 return NULL;
7364
7365         return bss->addr;
7366 }
7367
7368
7369 static const char * scan_state_str(enum scan_states scan_state)
7370 {
7371         switch (scan_state) {
7372         case NO_SCAN:
7373                 return "NO_SCAN";
7374         case SCAN_REQUESTED:
7375                 return "SCAN_REQUESTED";
7376         case SCAN_STARTED:
7377                 return "SCAN_STARTED";
7378         case SCAN_COMPLETED:
7379                 return "SCAN_COMPLETED";
7380         case SCAN_ABORTED:
7381                 return "SCAN_ABORTED";
7382         case SCHED_SCAN_STARTED:
7383                 return "SCHED_SCAN_STARTED";
7384         case SCHED_SCAN_STOPPED:
7385                 return "SCHED_SCAN_STOPPED";
7386         case SCHED_SCAN_RESULTS:
7387                 return "SCHED_SCAN_RESULTS";
7388         }
7389
7390         return "??";
7391 }
7392
7393
7394 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7395 {
7396         struct i802_bss *bss = priv;
7397         struct wpa_driver_nl80211_data *drv = bss->drv;
7398         int res;
7399         char *pos, *end;
7400
7401         pos = buf;
7402         end = buf + buflen;
7403
7404         res = os_snprintf(pos, end - pos,
7405                           "ifindex=%d\n"
7406                           "ifname=%s\n"
7407                           "brname=%s\n"
7408                           "addr=" MACSTR "\n"
7409                           "freq=%d\n"
7410                           "%s%s%s%s%s",
7411                           bss->ifindex,
7412                           bss->ifname,
7413                           bss->brname,
7414                           MAC2STR(bss->addr),
7415                           bss->freq,
7416                           bss->beacon_set ? "beacon_set=1\n" : "",
7417                           bss->added_if_into_bridge ?
7418                           "added_if_into_bridge=1\n" : "",
7419                           bss->added_bridge ? "added_bridge=1\n" : "",
7420                           bss->in_deinit ? "in_deinit=1\n" : "",
7421                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7422         if (os_snprintf_error(end - pos, res))
7423                 return pos - buf;
7424         pos += res;
7425
7426         if (bss->wdev_id_set) {
7427                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7428                                   (unsigned long long) bss->wdev_id);
7429                 if (os_snprintf_error(end - pos, res))
7430                         return pos - buf;
7431                 pos += res;
7432         }
7433
7434         res = os_snprintf(pos, end - pos,
7435                           "phyname=%s\n"
7436                           "perm_addr=" MACSTR "\n"
7437                           "drv_ifindex=%d\n"
7438                           "operstate=%d\n"
7439                           "scan_state=%s\n"
7440                           "auth_bssid=" MACSTR "\n"
7441                           "auth_attempt_bssid=" MACSTR "\n"
7442                           "bssid=" MACSTR "\n"
7443                           "prev_bssid=" MACSTR "\n"
7444                           "associated=%d\n"
7445                           "assoc_freq=%u\n"
7446                           "monitor_sock=%d\n"
7447                           "monitor_ifidx=%d\n"
7448                           "monitor_refcount=%d\n"
7449                           "last_mgmt_freq=%u\n"
7450                           "eapol_tx_sock=%d\n"
7451                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7452                           drv->phyname,
7453                           MAC2STR(drv->perm_addr),
7454                           drv->ifindex,
7455                           drv->operstate,
7456                           scan_state_str(drv->scan_state),
7457                           MAC2STR(drv->auth_bssid),
7458                           MAC2STR(drv->auth_attempt_bssid),
7459                           MAC2STR(drv->bssid),
7460                           MAC2STR(drv->prev_bssid),
7461                           drv->associated,
7462                           drv->assoc_freq,
7463                           drv->monitor_sock,
7464                           drv->monitor_ifidx,
7465                           drv->monitor_refcount,
7466                           drv->last_mgmt_freq,
7467                           drv->eapol_tx_sock,
7468                           drv->ignore_if_down_event ?
7469                           "ignore_if_down_event=1\n" : "",
7470                           drv->scan_complete_events ?
7471                           "scan_complete_events=1\n" : "",
7472                           drv->disabled_11b_rates ?
7473                           "disabled_11b_rates=1\n" : "",
7474                           drv->pending_remain_on_chan ?
7475                           "pending_remain_on_chan=1\n" : "",
7476                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7477                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7478                           drv->poll_command_supported ?
7479                           "poll_command_supported=1\n" : "",
7480                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7481                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7482                           drv->retry_auth ? "retry_auth=1\n" : "",
7483                           drv->use_monitor ? "use_monitor=1\n" : "",
7484                           drv->ignore_next_local_disconnect ?
7485                           "ignore_next_local_disconnect=1\n" : "",
7486                           drv->ignore_next_local_deauth ?
7487                           "ignore_next_local_deauth=1\n" : "");
7488         if (os_snprintf_error(end - pos, res))
7489                 return pos - buf;
7490         pos += res;
7491
7492         if (drv->has_capability) {
7493                 res = os_snprintf(pos, end - pos,
7494                                   "capa.key_mgmt=0x%x\n"
7495                                   "capa.enc=0x%x\n"
7496                                   "capa.auth=0x%x\n"
7497                                   "capa.flags=0x%llx\n"
7498                                   "capa.rrm_flags=0x%x\n"
7499                                   "capa.max_scan_ssids=%d\n"
7500                                   "capa.max_sched_scan_ssids=%d\n"
7501                                   "capa.sched_scan_supported=%d\n"
7502                                   "capa.max_match_sets=%d\n"
7503                                   "capa.max_remain_on_chan=%u\n"
7504                                   "capa.max_stations=%u\n"
7505                                   "capa.probe_resp_offloads=0x%x\n"
7506                                   "capa.max_acl_mac_addrs=%u\n"
7507                                   "capa.num_multichan_concurrent=%u\n"
7508                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7509                                   "capa.mac_addr_rand_scan_supported=%d\n",
7510                                   drv->capa.key_mgmt,
7511                                   drv->capa.enc,
7512                                   drv->capa.auth,
7513                                   (unsigned long long) drv->capa.flags,
7514                                   drv->capa.rrm_flags,
7515                                   drv->capa.max_scan_ssids,
7516                                   drv->capa.max_sched_scan_ssids,
7517                                   drv->capa.sched_scan_supported,
7518                                   drv->capa.max_match_sets,
7519                                   drv->capa.max_remain_on_chan,
7520                                   drv->capa.max_stations,
7521                                   drv->capa.probe_resp_offloads,
7522                                   drv->capa.max_acl_mac_addrs,
7523                                   drv->capa.num_multichan_concurrent,
7524                                   drv->capa.mac_addr_rand_sched_scan_supported,
7525                                   drv->capa.mac_addr_rand_scan_supported);
7526                 if (os_snprintf_error(end - pos, res))
7527                         return pos - buf;
7528                 pos += res;
7529         }
7530
7531         return pos - buf;
7532 }
7533
7534
7535 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7536 {
7537         if ((settings->head &&
7538              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7539                      settings->head_len, settings->head)) ||
7540             (settings->tail &&
7541              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7542                      settings->tail_len, settings->tail)) ||
7543             (settings->beacon_ies &&
7544              nla_put(msg, NL80211_ATTR_IE,
7545                      settings->beacon_ies_len, settings->beacon_ies)) ||
7546             (settings->proberesp_ies &&
7547              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7548                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7549             (settings->assocresp_ies &&
7550              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7551                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7552             (settings->probe_resp &&
7553              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7554                      settings->probe_resp_len, settings->probe_resp)))
7555                 return -ENOBUFS;
7556
7557         return 0;
7558 }
7559
7560
7561 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7562 {
7563         struct nl_msg *msg;
7564         struct i802_bss *bss = priv;
7565         struct wpa_driver_nl80211_data *drv = bss->drv;
7566         struct nlattr *beacon_csa;
7567         int ret = -ENOBUFS;
7568
7569         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7570                    settings->cs_count, settings->block_tx,
7571                    settings->freq_params.freq, settings->freq_params.bandwidth,
7572                    settings->freq_params.center_freq1,
7573                    settings->freq_params.center_freq2);
7574
7575         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7576                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7577                 return -EOPNOTSUPP;
7578         }
7579
7580         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7581             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7582                 return -EOPNOTSUPP;
7583
7584         /* check settings validity */
7585         if (!settings->beacon_csa.tail ||
7586             ((settings->beacon_csa.tail_len <=
7587               settings->counter_offset_beacon) ||
7588              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7589               settings->cs_count)))
7590                 return -EINVAL;
7591
7592         if (settings->beacon_csa.probe_resp &&
7593             ((settings->beacon_csa.probe_resp_len <=
7594               settings->counter_offset_presp) ||
7595              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7596               settings->cs_count)))
7597                 return -EINVAL;
7598
7599         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7600             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7601                         settings->cs_count) ||
7602             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7603             (settings->block_tx &&
7604              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7605                 goto error;
7606
7607         /* beacon_after params */
7608         ret = set_beacon_data(msg, &settings->beacon_after);
7609         if (ret)
7610                 goto error;
7611
7612         /* beacon_csa params */
7613         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7614         if (!beacon_csa)
7615                 goto fail;
7616
7617         ret = set_beacon_data(msg, &settings->beacon_csa);
7618         if (ret)
7619                 goto error;
7620
7621         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7622                         settings->counter_offset_beacon) ||
7623             (settings->beacon_csa.probe_resp &&
7624              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7625                          settings->counter_offset_presp)))
7626                 goto fail;
7627
7628         nla_nest_end(msg, beacon_csa);
7629         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7630         if (ret) {
7631                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7632                            ret, strerror(-ret));
7633         }
7634         return ret;
7635
7636 fail:
7637         ret = -ENOBUFS;
7638 error:
7639         nlmsg_free(msg);
7640         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7641         return ret;
7642 }
7643
7644
7645 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7646                           u8 user_priority, u16 admitted_time)
7647 {
7648         struct i802_bss *bss = priv;
7649         struct wpa_driver_nl80211_data *drv = bss->drv;
7650         struct nl_msg *msg;
7651         int ret;
7652
7653         wpa_printf(MSG_DEBUG,
7654                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7655                    tsid, admitted_time, user_priority);
7656
7657         if (!is_sta_interface(drv->nlmode))
7658                 return -ENOTSUP;
7659
7660         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7661         if (!msg ||
7662             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7663             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7664             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7665             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7666                 nlmsg_free(msg);
7667                 return -ENOBUFS;
7668         }
7669
7670         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7671         if (ret)
7672                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7673                            ret, strerror(-ret));
7674         return ret;
7675 }
7676
7677
7678 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7679 {
7680         struct i802_bss *bss = priv;
7681         struct wpa_driver_nl80211_data *drv = bss->drv;
7682         struct nl_msg *msg;
7683         int ret;
7684
7685         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7686
7687         if (!is_sta_interface(drv->nlmode))
7688                 return -ENOTSUP;
7689
7690         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7691             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7692             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7693                 nlmsg_free(msg);
7694                 return -ENOBUFS;
7695         }
7696
7697         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7698         if (ret)
7699                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7700                            ret, strerror(-ret));
7701         return ret;
7702 }
7703
7704
7705 #ifdef CONFIG_TESTING_OPTIONS
7706 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7707 {
7708         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7709         struct wpabuf *buf = arg;
7710
7711         if (!buf)
7712                 return NL_SKIP;
7713
7714         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7715                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7716                 return NL_SKIP;
7717         }
7718
7719         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7720                         genlmsg_attrlen(gnlh, 0));
7721
7722         return NL_SKIP;
7723 }
7724 #endif /* CONFIG_TESTING_OPTIONS */
7725
7726
7727 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7728 {
7729         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7730         struct nlattr *nl_vendor_reply, *nl;
7731         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7732         struct wpabuf *buf = arg;
7733         int rem;
7734
7735         if (!buf)
7736                 return NL_SKIP;
7737
7738         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7739                   genlmsg_attrlen(gnlh, 0), NULL);
7740         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7741
7742         if (!nl_vendor_reply)
7743                 return NL_SKIP;
7744
7745         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7746                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7747                 return NL_SKIP;
7748         }
7749
7750         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7751                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7752         }
7753
7754         return NL_SKIP;
7755 }
7756
7757
7758 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7759                               unsigned int subcmd, const u8 *data,
7760                               size_t data_len, struct wpabuf *buf)
7761 {
7762         struct i802_bss *bss = priv;
7763         struct wpa_driver_nl80211_data *drv = bss->drv;
7764         struct nl_msg *msg;
7765         int ret;
7766
7767 #ifdef CONFIG_TESTING_OPTIONS
7768         if (vendor_id == 0xffffffff) {
7769                 msg = nlmsg_alloc();
7770                 if (!msg)
7771                         return -ENOMEM;
7772
7773                 nl80211_cmd(drv, msg, 0, subcmd);
7774                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7775                     0)
7776                         goto fail;
7777                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7778                 if (ret)
7779                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7780                                    ret);
7781                 return ret;
7782         }
7783 #endif /* CONFIG_TESTING_OPTIONS */
7784
7785         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7786             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7787             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7788             (data &&
7789              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7790                 goto fail;
7791
7792         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7793         if (ret)
7794                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7795                            ret);
7796         return ret;
7797
7798 fail:
7799         nlmsg_free(msg);
7800         return -ENOBUFS;
7801 }
7802
7803
7804 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7805                                u8 qos_map_set_len)
7806 {
7807         struct i802_bss *bss = priv;
7808         struct wpa_driver_nl80211_data *drv = bss->drv;
7809         struct nl_msg *msg;
7810         int ret;
7811
7812         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7813                     qos_map_set, qos_map_set_len);
7814
7815         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7816             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7817                 nlmsg_free(msg);
7818                 return -ENOBUFS;
7819         }
7820
7821         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7822         if (ret)
7823                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7824
7825         return ret;
7826 }
7827
7828
7829 static int nl80211_set_wowlan(void *priv,
7830                               const struct wowlan_triggers *triggers)
7831 {
7832         struct i802_bss *bss = priv;
7833         struct wpa_driver_nl80211_data *drv = bss->drv;
7834         struct nl_msg *msg;
7835         struct nlattr *wowlan_triggers;
7836         int ret;
7837
7838         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7839
7840         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
7841             !(wowlan_triggers = nla_nest_start(msg,
7842                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7843             (triggers->any &&
7844              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7845             (triggers->disconnect &&
7846              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7847             (triggers->magic_pkt &&
7848              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7849             (triggers->gtk_rekey_failure &&
7850              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7851             (triggers->eap_identity_req &&
7852              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7853             (triggers->four_way_handshake &&
7854              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7855             (triggers->rfkill_release &&
7856              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7857                 nlmsg_free(msg);
7858                 return -ENOBUFS;
7859         }
7860
7861         nla_nest_end(msg, wowlan_triggers);
7862
7863         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7864         if (ret)
7865                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7866
7867         return ret;
7868 }
7869
7870
7871 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7872 {
7873         struct i802_bss *bss = priv;
7874         struct wpa_driver_nl80211_data *drv = bss->drv;
7875         struct nl_msg *msg;
7876         struct nlattr *params;
7877
7878         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7879
7880         if (!drv->roaming_vendor_cmd_avail) {
7881                 wpa_printf(MSG_DEBUG,
7882                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7883                 return -1;
7884         }
7885
7886         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7887             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7888             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7889                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7890             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7891             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7892                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7893                         QCA_ROAMING_NOT_ALLOWED) ||
7894             (bssid &&
7895              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7896                 nlmsg_free(msg);
7897                 return -1;
7898         }
7899         nla_nest_end(msg, params);
7900
7901         return send_and_recv_msgs(drv, msg, NULL, NULL);
7902 }
7903
7904
7905 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7906 {
7907         struct i802_bss *bss = priv;
7908         struct wpa_driver_nl80211_data *drv = bss->drv;
7909         int new_addr = addr != NULL;
7910
7911         if (!addr)
7912                 addr = drv->perm_addr;
7913
7914         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7915                 return -1;
7916
7917         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7918         {
7919                 wpa_printf(MSG_DEBUG,
7920                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7921                            bss->ifname, MAC2STR(addr));
7922                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7923                                           1) < 0) {
7924                         wpa_printf(MSG_DEBUG,
7925                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7926                 }
7927                 return -1;
7928         }
7929
7930         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7931                    bss->ifname, MAC2STR(addr));
7932         drv->addr_changed = new_addr;
7933         os_memcpy(bss->addr, addr, ETH_ALEN);
7934
7935         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7936         {
7937                 wpa_printf(MSG_DEBUG,
7938                            "nl80211: Could not restore interface UP after set_mac_addr");
7939         }
7940
7941         return 0;
7942 }
7943
7944
7945 #ifdef CONFIG_MESH
7946
7947 static int wpa_driver_nl80211_init_mesh(void *priv)
7948 {
7949         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7950                 wpa_printf(MSG_INFO,
7951                            "nl80211: Failed to set interface into mesh mode");
7952                 return -1;
7953         }
7954         return 0;
7955 }
7956
7957
7958 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
7959                                size_t mesh_id_len)
7960 {
7961         if (mesh_id) {
7962                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
7963                                   mesh_id, mesh_id_len);
7964                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
7965         }
7966
7967         return 0;
7968 }
7969
7970
7971 static int nl80211_join_mesh(struct i802_bss *bss,
7972                              struct wpa_driver_mesh_join_params *params)
7973 {
7974         struct wpa_driver_nl80211_data *drv = bss->drv;
7975         struct nl_msg *msg;
7976         struct nlattr *container;
7977         int ret = -1;
7978
7979         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7980         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7981         if (!msg ||
7982             nl80211_put_freq_params(msg, &params->freq) ||
7983             nl80211_put_basic_rates(msg, params->basic_rates) ||
7984             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
7985             nl80211_put_beacon_int(msg, params->beacon_int))
7986                 goto fail;
7987
7988         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7989
7990         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7991         if (!container)
7992                 goto fail;
7993
7994         if (params->ies) {
7995                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7996                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7997                             params->ies))
7998                         goto fail;
7999         }
8000         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8001         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8002                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8003                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8004                         goto fail;
8005         }
8006         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8007             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8008                 goto fail;
8009         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8010             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8011                 goto fail;
8012         nla_nest_end(msg, container);
8013
8014         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8015         if (!container)
8016                 goto fail;
8017
8018         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8019             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8020                 goto fail;
8021         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
8022             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8023                         params->max_peer_links))
8024                 goto fail;
8025
8026         /*
8027          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
8028          * the timer could disconnect stations even in that case.
8029          */
8030         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8031                         params->conf.peer_link_timeout)) {
8032                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8033                 goto fail;
8034         }
8035
8036         nla_nest_end(msg, container);
8037
8038         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8039         msg = NULL;
8040         if (ret) {
8041                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8042                            ret, strerror(-ret));
8043                 goto fail;
8044         }
8045         ret = 0;
8046         bss->freq = params->freq.freq;
8047         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8048
8049 fail:
8050         nlmsg_free(msg);
8051         return ret;
8052 }
8053
8054
8055 static int
8056 wpa_driver_nl80211_join_mesh(void *priv,
8057                              struct wpa_driver_mesh_join_params *params)
8058 {
8059         struct i802_bss *bss = priv;
8060         int ret, timeout;
8061
8062         timeout = params->conf.peer_link_timeout;
8063
8064         /* Disable kernel inactivity timer */
8065         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8066                 params->conf.peer_link_timeout = 0;
8067
8068         ret = nl80211_join_mesh(bss, params);
8069         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8070                 wpa_printf(MSG_DEBUG,
8071                            "nl80211: Mesh join retry for peer_link_timeout");
8072                 /*
8073                  * Old kernel does not support setting
8074                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8075                  * into future from peer_link_timeout.
8076                  */
8077                 params->conf.peer_link_timeout = timeout + 60;
8078                 ret = nl80211_join_mesh(priv, params);
8079         }
8080
8081         params->conf.peer_link_timeout = timeout;
8082         return ret;
8083 }
8084
8085
8086 static int wpa_driver_nl80211_leave_mesh(void *priv)
8087 {
8088         struct i802_bss *bss = priv;
8089         struct wpa_driver_nl80211_data *drv = bss->drv;
8090         struct nl_msg *msg;
8091         int ret;
8092
8093         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8094         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8095         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8096         if (ret) {
8097                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8098                            ret, strerror(-ret));
8099         } else {
8100                 wpa_printf(MSG_DEBUG,
8101                            "nl80211: mesh leave request send successfully");
8102         }
8103
8104         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8105                                         NL80211_IFTYPE_STATION)) {
8106                 wpa_printf(MSG_INFO,
8107                            "nl80211: Failed to set interface into station mode");
8108         }
8109         return ret;
8110 }
8111
8112 #endif /* CONFIG_MESH */
8113
8114
8115 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8116                                       const u8 *ipaddr, int prefixlen,
8117                                       const u8 *addr)
8118 {
8119 #ifdef CONFIG_LIBNL3_ROUTE
8120         struct i802_bss *bss = priv;
8121         struct wpa_driver_nl80211_data *drv = bss->drv;
8122         struct rtnl_neigh *rn;
8123         struct nl_addr *nl_ipaddr = NULL;
8124         struct nl_addr *nl_lladdr = NULL;
8125         int family, addrsize;
8126         int res;
8127
8128         if (!ipaddr || prefixlen == 0 || !addr)
8129                 return -EINVAL;
8130
8131         if (bss->br_ifindex == 0) {
8132                 wpa_printf(MSG_DEBUG,
8133                            "nl80211: bridge must be set before adding an ip neigh to it");
8134                 return -1;
8135         }
8136
8137         if (!drv->rtnl_sk) {
8138                 wpa_printf(MSG_DEBUG,
8139                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8140                 return -1;
8141         }
8142
8143         if (version == 4) {
8144                 family = AF_INET;
8145                 addrsize = 4;
8146         } else if (version == 6) {
8147                 family = AF_INET6;
8148                 addrsize = 16;
8149         } else {
8150                 return -EINVAL;
8151         }
8152
8153         rn = rtnl_neigh_alloc();
8154         if (rn == NULL)
8155                 return -ENOMEM;
8156
8157         /* set the destination ip address for neigh */
8158         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8159         if (nl_ipaddr == NULL) {
8160                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8161                 res = -ENOMEM;
8162                 goto errout;
8163         }
8164         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8165         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8166         if (res) {
8167                 wpa_printf(MSG_DEBUG,
8168                            "nl80211: neigh set destination addr failed");
8169                 goto errout;
8170         }
8171
8172         /* set the corresponding lladdr for neigh */
8173         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8174         if (nl_lladdr == NULL) {
8175                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8176                 res = -ENOMEM;
8177                 goto errout;
8178         }
8179         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8180
8181         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8182         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8183
8184         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8185         if (res) {
8186                 wpa_printf(MSG_DEBUG,
8187                            "nl80211: Adding bridge ip neigh failed: %s",
8188                            strerror(errno));
8189         }
8190 errout:
8191         if (nl_lladdr)
8192                 nl_addr_put(nl_lladdr);
8193         if (nl_ipaddr)
8194                 nl_addr_put(nl_ipaddr);
8195         if (rn)
8196                 rtnl_neigh_put(rn);
8197         return res;
8198 #else /* CONFIG_LIBNL3_ROUTE */
8199         return -1;
8200 #endif /* CONFIG_LIBNL3_ROUTE */
8201 }
8202
8203
8204 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8205                                          const u8 *ipaddr)
8206 {
8207 #ifdef CONFIG_LIBNL3_ROUTE
8208         struct i802_bss *bss = priv;
8209         struct wpa_driver_nl80211_data *drv = bss->drv;
8210         struct rtnl_neigh *rn;
8211         struct nl_addr *nl_ipaddr;
8212         int family, addrsize;
8213         int res;
8214
8215         if (!ipaddr)
8216                 return -EINVAL;
8217
8218         if (version == 4) {
8219                 family = AF_INET;
8220                 addrsize = 4;
8221         } else if (version == 6) {
8222                 family = AF_INET6;
8223                 addrsize = 16;
8224         } else {
8225                 return -EINVAL;
8226         }
8227
8228         if (bss->br_ifindex == 0) {
8229                 wpa_printf(MSG_DEBUG,
8230                            "nl80211: bridge must be set to delete an ip neigh");
8231                 return -1;
8232         }
8233
8234         if (!drv->rtnl_sk) {
8235                 wpa_printf(MSG_DEBUG,
8236                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8237                 return -1;
8238         }
8239
8240         rn = rtnl_neigh_alloc();
8241         if (rn == NULL)
8242                 return -ENOMEM;
8243
8244         /* set the destination ip address for neigh */
8245         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8246         if (nl_ipaddr == NULL) {
8247                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8248                 res = -ENOMEM;
8249                 goto errout;
8250         }
8251         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8252         if (res) {
8253                 wpa_printf(MSG_DEBUG,
8254                            "nl80211: neigh set destination addr failed");
8255                 goto errout;
8256         }
8257
8258         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8259
8260         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8261         if (res) {
8262                 wpa_printf(MSG_DEBUG,
8263                            "nl80211: Deleting bridge ip neigh failed: %s",
8264                            strerror(errno));
8265         }
8266 errout:
8267         if (nl_ipaddr)
8268                 nl_addr_put(nl_ipaddr);
8269         if (rn)
8270                 rtnl_neigh_put(rn);
8271         return res;
8272 #else /* CONFIG_LIBNL3_ROUTE */
8273         return -1;
8274 #endif /* CONFIG_LIBNL3_ROUTE */
8275 }
8276
8277
8278 static int linux_write_system_file(const char *path, unsigned int val)
8279 {
8280         char buf[50];
8281         int fd, len;
8282
8283         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8284         if (os_snprintf_error(sizeof(buf), len))
8285                 return -1;
8286
8287         fd = open(path, O_WRONLY);
8288         if (fd < 0)
8289                 return -1;
8290
8291         if (write(fd, buf, len) < 0) {
8292                 wpa_printf(MSG_DEBUG,
8293                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8294                            path, val);
8295                 close(fd);
8296                 return -1;
8297         }
8298         close(fd);
8299
8300         return 0;
8301 }
8302
8303
8304 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8305 {
8306         switch (attr) {
8307         case DRV_BR_PORT_ATTR_PROXYARP:
8308                 return "proxyarp_wifi";
8309         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8310                 return "hairpin_mode";
8311         }
8312
8313         return NULL;
8314 }
8315
8316
8317 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8318                                        unsigned int val)
8319 {
8320         struct i802_bss *bss = priv;
8321         char path[128];
8322         const char *attr_txt;
8323
8324         attr_txt = drv_br_port_attr_str(attr);
8325         if (attr_txt == NULL)
8326                 return -EINVAL;
8327
8328         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8329                     bss->ifname, attr_txt);
8330
8331         if (linux_write_system_file(path, val))
8332                 return -1;
8333
8334         return 0;
8335 }
8336
8337
8338 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8339 {
8340         switch (param) {
8341         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8342                 return "arp_accept";
8343         }
8344
8345         return NULL;
8346 }
8347
8348
8349 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8350                                        unsigned int val)
8351 {
8352         struct i802_bss *bss = priv;
8353         char path[128];
8354         const char *param_txt;
8355         int ip_version = 4;
8356
8357         param_txt = drv_br_net_param_str(param);
8358         if (param_txt == NULL)
8359                 return -EINVAL;
8360
8361         switch (param) {
8362                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8363                         ip_version = 4;
8364                         break;
8365                 default:
8366                         return -EINVAL;
8367         }
8368
8369         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8370                     ip_version, bss->brname, param_txt);
8371
8372         if (linux_write_system_file(path, val))
8373                 return -1;
8374
8375         return 0;
8376 }
8377
8378
8379 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8380 {
8381         switch (hw_mode) {
8382         case HOSTAPD_MODE_IEEE80211B:
8383                 return QCA_ACS_MODE_IEEE80211B;
8384         case HOSTAPD_MODE_IEEE80211G:
8385                 return QCA_ACS_MODE_IEEE80211G;
8386         case HOSTAPD_MODE_IEEE80211A:
8387                 return QCA_ACS_MODE_IEEE80211A;
8388         case HOSTAPD_MODE_IEEE80211AD:
8389                 return QCA_ACS_MODE_IEEE80211AD;
8390         default:
8391                 return -1;
8392         }
8393 }
8394
8395
8396 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8397 {
8398         struct i802_bss *bss = priv;
8399         struct wpa_driver_nl80211_data *drv = bss->drv;
8400         struct nl_msg *msg;
8401         struct nlattr *data;
8402         int ret;
8403         int mode;
8404
8405         mode = hw_mode_to_qca_acs(params->hw_mode);
8406         if (mode < 0)
8407                 return -1;
8408
8409         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8410             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8411             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8412                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8413             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8414             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8415             (params->ht_enabled &&
8416              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8417             (params->ht40_enabled &&
8418              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
8419                 nlmsg_free(msg);
8420                 return -ENOBUFS;
8421         }
8422         nla_nest_end(msg, data);
8423
8424         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8425         if (ret) {
8426                 wpa_printf(MSG_DEBUG,
8427                            "nl80211: Failed to invoke driver ACS function: %s",
8428                            strerror(errno));
8429         }
8430         return ret;
8431 }
8432
8433
8434 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8435         .name = "nl80211",
8436         .desc = "Linux nl80211/cfg80211",
8437         .get_bssid = wpa_driver_nl80211_get_bssid,
8438         .get_ssid = wpa_driver_nl80211_get_ssid,
8439         .set_key = driver_nl80211_set_key,
8440         .scan2 = driver_nl80211_scan2,
8441         .sched_scan = wpa_driver_nl80211_sched_scan,
8442         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8443         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8444         .deauthenticate = driver_nl80211_deauthenticate,
8445         .authenticate = driver_nl80211_authenticate,
8446         .associate = wpa_driver_nl80211_associate,
8447         .global_init = nl80211_global_init,
8448         .global_deinit = nl80211_global_deinit,
8449         .init2 = wpa_driver_nl80211_init,
8450         .deinit = driver_nl80211_deinit,
8451         .get_capa = wpa_driver_nl80211_get_capa,
8452         .set_operstate = wpa_driver_nl80211_set_operstate,
8453         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8454         .set_country = wpa_driver_nl80211_set_country,
8455         .get_country = wpa_driver_nl80211_get_country,
8456         .set_ap = wpa_driver_nl80211_set_ap,
8457         .set_acl = wpa_driver_nl80211_set_acl,
8458         .if_add = wpa_driver_nl80211_if_add,
8459         .if_remove = driver_nl80211_if_remove,
8460         .send_mlme = driver_nl80211_send_mlme,
8461         .get_hw_feature_data = nl80211_get_hw_feature_data,
8462         .sta_add = wpa_driver_nl80211_sta_add,
8463         .sta_remove = driver_nl80211_sta_remove,
8464         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8465         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8466         .hapd_init = i802_init,
8467         .hapd_deinit = i802_deinit,
8468         .set_wds_sta = i802_set_wds_sta,
8469         .get_seqnum = i802_get_seqnum,
8470         .flush = i802_flush,
8471         .get_inact_sec = i802_get_inact_sec,
8472         .sta_clear_stats = i802_sta_clear_stats,
8473         .set_rts = i802_set_rts,
8474         .set_frag = i802_set_frag,
8475         .set_tx_queue_params = i802_set_tx_queue_params,
8476         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8477         .sta_deauth = i802_sta_deauth,
8478         .sta_disassoc = i802_sta_disassoc,
8479         .read_sta_data = driver_nl80211_read_sta_data,
8480         .set_freq = i802_set_freq,
8481         .send_action = driver_nl80211_send_action,
8482         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8483         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8484         .cancel_remain_on_channel =
8485         wpa_driver_nl80211_cancel_remain_on_channel,
8486         .probe_req_report = driver_nl80211_probe_req_report,
8487         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8488         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8489         .resume = wpa_driver_nl80211_resume,
8490         .signal_monitor = nl80211_signal_monitor,
8491         .signal_poll = nl80211_signal_poll,
8492         .send_frame = nl80211_send_frame,
8493         .shared_freq = wpa_driver_nl80211_shared_freq,
8494         .set_param = nl80211_set_param,
8495         .get_radio_name = nl80211_get_radio_name,
8496         .add_pmkid = nl80211_add_pmkid,
8497         .remove_pmkid = nl80211_remove_pmkid,
8498         .flush_pmkid = nl80211_flush_pmkid,
8499         .set_rekey_info = nl80211_set_rekey_info,
8500         .poll_client = nl80211_poll_client,
8501         .set_p2p_powersave = nl80211_set_p2p_powersave,
8502         .start_dfs_cac = nl80211_start_radar_detection,
8503         .stop_ap = wpa_driver_nl80211_stop_ap,
8504 #ifdef CONFIG_TDLS
8505         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8506         .tdls_oper = nl80211_tdls_oper,
8507         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8508         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8509 #endif /* CONFIG_TDLS */
8510         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8511         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8512         .get_survey = wpa_driver_nl80211_get_survey,
8513         .status = wpa_driver_nl80211_status,
8514         .switch_channel = nl80211_switch_channel,
8515 #ifdef ANDROID_P2P
8516         .set_noa = wpa_driver_set_p2p_noa,
8517         .get_noa = wpa_driver_get_p2p_noa,
8518         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8519 #endif /* ANDROID_P2P */
8520 #ifdef ANDROID
8521         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8522 #endif /* ANDROID */
8523         .vendor_cmd = nl80211_vendor_cmd,
8524         .set_qos_map = nl80211_set_qos_map,
8525         .set_wowlan = nl80211_set_wowlan,
8526         .roaming = nl80211_roaming,
8527         .set_mac_addr = nl80211_set_mac_addr,
8528 #ifdef CONFIG_MESH
8529         .init_mesh = wpa_driver_nl80211_init_mesh,
8530         .join_mesh = wpa_driver_nl80211_join_mesh,
8531         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8532 #endif /* CONFIG_MESH */
8533         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8534         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8535         .br_port_set_attr = wpa_driver_br_port_set_attr,
8536         .br_set_net_param = wpa_driver_br_set_net_param,
8537         .add_tx_ts = nl80211_add_ts,
8538         .del_tx_ts = nl80211_del_ts,
8539         .do_acs = wpa_driver_do_acs,
8540 };