src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This software may be distributed under the terms of the BSD license.
  10  * See README for more details.
  11  */
  12
  13 #include "includes.h"
  14 #include <sys/types.h>
  15 #include <fcntl.h>
  16 #include <net/if.h>
  17 #include <netlink/genl/genl.h>
  18 #include <netlink/genl/ctrl.h>
  19 #ifdef CONFIG_LIBNL3_ROUTE
  20 #include <netlink/route/neighbour.h>
  21 #endif /* CONFIG_LIBNL3_ROUTE */
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/errqueue.h>
  25
  26 #include "common.h"
  27 #include "eloop.h"
  28 #include "common/qca-vendor.h"
  29 #include "common/qca-vendor-attr.h"
  30 #include "common/ieee802_11_defs.h"
  31 #include "common/ieee802_11_common.h"
  32 #include "l2_packet/l2_packet.h"
  33 #include "netlink.h"
  34 #include "linux_defines.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver_nl80211.h"
  40
  41
  42 #ifndef CONFIG_LIBNL20
  43 /*
  44  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  45  * but when you free a socket again it will mess up its bitmap and
  46  * and use the wrong number the next time it needs a socket ID.
  47  * Therefore, we wrap the handle alloc/destroy and add our own pid
  48  * accounting.
  49  */
  50 static uint32_t port_bitmap[32] = { 0 };
  51
  52 static struct nl_handle *nl80211_handle_alloc(void *cb)
  53 {
  54         struct nl_handle *handle;
  55         uint32_t pid = getpid() & 0x3FFFFF;
  56         int i;
  57
  58         handle = nl_handle_alloc_cb(cb);
  59
  60         for (i = 0; i < 1024; i++) {
  61                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  62                         continue;
  63                 port_bitmap[i / 32] |= 1 << (i % 32);
  64                 pid += i << 22;
  65                 break;
  66         }
  67
  68         nl_socket_set_local_port(handle, pid);
  69
  70         return handle;
  71 }
  72
  73 static void nl80211_handle_destroy(struct nl_handle *handle)
  74 {
  75         uint32_t port = nl_socket_get_local_port(handle);
  76
  77         port >>= 22;
  78         port_bitmap[port / 32] &= ~(1 << (port % 32));
  79
  80         nl_handle_destroy(handle);
  81 }
  82 #endif /* CONFIG_LIBNL20 */
  83
  84
  85 #ifdef ANDROID
  86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
  87 #undef nl_socket_set_nonblocking
  88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
  89
  90 #endif /* ANDROID */
  91
  92
  93 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  94 {
  95         struct nl_handle *handle;
  96
  97         handle = nl80211_handle_alloc(cb);
  98         if (handle == NULL) {
  99                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 100                            "callbacks (%s)", dbg);
 101                 return NULL;
 102         }
 103
 104         if (genl_connect(handle)) {
 105                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 106                            "netlink (%s)", dbg);
 107                 nl80211_handle_destroy(handle);
 108                 return NULL;
 109         }
 110
 111         return handle;
 112 }
 113
 114
 115 static void nl_destroy_handles(struct nl_handle **handle)
 116 {
 117         if (*handle == NULL)
 118                 return;
 119         nl80211_handle_destroy(*handle);
 120         *handle = NULL;
 121 }
 122
 123
 124 #if __WORDSIZE == 64
 125 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 126 #else
 127 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 128 #endif
 129
 130 static void nl80211_register_eloop_read(struct nl_handle **handle,
 131                                         eloop_sock_handler handler,
 132                                         void *eloop_data)
 133 {
 134 #ifdef CONFIG_LIBNL20
 135         /*
 136          * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
 137          * by default. It is possible to hit that limit in some cases where
 138          * operations are blocked, e.g., with a burst of Deauthentication frames
 139          * to hostapd and STA entry deletion. Try to increase the buffer to make
 140          * this less likely to occur.
 141          */
 142         if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
 143                 wpa_printf(MSG_DEBUG,
 144                            "nl80211: Could not set nl_socket RX buffer size: %s",
 145                            strerror(errno));
 146                 /* continue anyway with the default (smaller) buffer */
 147         }
 148 #endif /* CONFIG_LIBNL20 */
 149
 150         nl_socket_set_nonblocking(*handle);
 151         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 152                                  eloop_data, *handle);
 153         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 154 }
 155
 156
 157 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 158 {
 159         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 160         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 161         nl_destroy_handles(handle);
 162 }
 163
 164
 165 static void nl80211_global_deinit(void *priv);
 166 static void nl80211_check_global(struct nl80211_global *global);
 167
 168 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 169 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 170                                             struct hostapd_freq_params *freq);
 171
 172 static int
 173 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 174                                    const u8 *set_addr, int first,
 175                                    const char *driver_params);
 176 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 177                                   unsigned int freq, unsigned int wait,
 178                                   const u8 *buf, size_t buf_len, u64 *cookie,
 179                                   int no_cck, int no_ack, int offchanok,
 180                                   const u16 *csa_offs, size_t csa_offs_len);
 181 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 182                                                int report);
 183
 184 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 185 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 186 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 187
 188 static int nl80211_set_channel(struct i802_bss *bss,
 189                                struct hostapd_freq_params *freq, int set_chan);
 190 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 191                                      int ifindex, int disabled);
 192
 193 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 194                               int reset_mode);
 195
 196 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 197 static int nl80211_set_param(void *priv, const char *param);
 198
 199
 200 /* Converts nl80211_chan_width to a common format */
 201 enum chan_width convert2width(int width)
 202 {
 203         switch (width) {
 204         case NL80211_CHAN_WIDTH_20_NOHT:
 205                 return CHAN_WIDTH_20_NOHT;
 206         case NL80211_CHAN_WIDTH_20:
 207                 return CHAN_WIDTH_20;
 208         case NL80211_CHAN_WIDTH_40:
 209                 return CHAN_WIDTH_40;
 210         case NL80211_CHAN_WIDTH_80:
 211                 return CHAN_WIDTH_80;
 212         case NL80211_CHAN_WIDTH_80P80:
 213                 return CHAN_WIDTH_80P80;
 214         case NL80211_CHAN_WIDTH_160:
 215                 return CHAN_WIDTH_160;
 216         }
 217         return CHAN_WIDTH_UNKNOWN;
 218 }
 219
 220
 221 int is_ap_interface(enum nl80211_iftype nlmode)
 222 {
 223         return nlmode == NL80211_IFTYPE_AP ||
 224                 nlmode == NL80211_IFTYPE_P2P_GO;
 225 }
 226
 227
 228 int is_sta_interface(enum nl80211_iftype nlmode)
 229 {
 230         return nlmode == NL80211_IFTYPE_STATION ||
 231                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 232 }
 233
 234
 235 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 236 {
 237         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 238                 nlmode == NL80211_IFTYPE_P2P_GO;
 239 }
 240
 241
 242 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 243                                   int ifindex)
 244 {
 245         struct i802_bss *bss;
 246
 247         for (bss = drv->first_bss; bss; bss = bss->next) {
 248                 if (bss->ifindex == ifindex)
 249                         return bss;
 250         }
 251
 252         return NULL;
 253 }
 254
 255
 256 static int is_mesh_interface(enum nl80211_iftype nlmode)
 257 {
 258         return nlmode == NL80211_IFTYPE_MESH_POINT;
 259 }
 260
 261
 262 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 263 {
 264         if (drv->associated)
 265                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 266         drv->associated = 0;
 267         os_memset(drv->bssid, 0, ETH_ALEN);
 268 }
 269
 270
 271 /* nl80211 code */
 272 static int ack_handler(struct nl_msg *msg, void *arg)
 273 {
 274         int *err = arg;
 275         *err = 0;
 276         return NL_STOP;
 277 }
 278
 279 static int finish_handler(struct nl_msg *msg, void *arg)
 280 {
 281         int *ret = arg;
 282         *ret = 0;
 283         return NL_SKIP;
 284 }
 285
 286 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 287                          void *arg)
 288 {
 289         int *ret = arg;
 290         *ret = err->error;
 291         return NL_SKIP;
 292 }
 293
 294
 295 static int no_seq_check(struct nl_msg *msg, void *arg)
 296 {
 297         return NL_OK;
 298 }
 299
 300
 301 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 302 {
 303         /*
 304          * Clear nlmsg data, e.g., to make sure key material is not left in
 305          * heap memory for unnecessarily long time.
 306          */
 307         if (msg) {
 308                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 309                 void *data = nlmsg_data(hdr);
 310                 /*
 311                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 312                  * only libnl were to maintain a stable API.. Neither will work
 313                  * with all released versions, so just calculate the length
 314                  * here.
 315                  */
 316                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 317
 318                 os_memset(data, 0, len);
 319         }
 320 }
 321
 322
 323 static int send_and_recv(struct nl80211_global *global,
 324                          struct nl_handle *nl_handle, struct nl_msg *msg,
 325                          int (*valid_handler)(struct nl_msg *, void *),
 326                          void *valid_data)
 327 {
 328         struct nl_cb *cb;
 329         int err = -ENOMEM;
 330
 331         if (!msg)
 332                 return -ENOMEM;
 333
 334         cb = nl_cb_clone(global->nl_cb);
 335         if (!cb)
 336                 goto out;
 337
 338         err = nl_send_auto_complete(nl_handle, msg);
 339         if (err < 0)
 340                 goto out;
 341
 342         err = 1;
 343
 344         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 345         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 346         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 347
 348         if (valid_handler)
 349                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 350                           valid_handler, valid_data);
 351
 352         while (err > 0) {
 353                 int res = nl_recvmsgs(nl_handle, cb);
 354                 if (res < 0) {
 355                         wpa_printf(MSG_INFO,
 356                                    "nl80211: %s->nl_recvmsgs failed: %d",
 357                                    __func__, res);
 358                 }
 359         }
 360  out:
 361         nl_cb_put(cb);
 362         if (!valid_handler && valid_data == (void *) -1)
 363                 nl80211_nlmsg_clear(msg);
 364         nlmsg_free(msg);
 365         return err;
 366 }
 367
 368
 369 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 370                        struct nl_msg *msg,
 371                        int (*valid_handler)(struct nl_msg *, void *),
 372                        void *valid_data)
 373 {
 374         return send_and_recv(drv->global, drv->global->nl, msg,
 375                              valid_handler, valid_data);
 376 }
 377
 378
 379 struct family_data {
 380         const char *group;
 381         int id;
 382 };
 383
 384
 385 static int family_handler(struct nl_msg *msg, void *arg)
 386 {
 387         struct family_data *res = arg;
 388         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 389         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 390         struct nlattr *mcgrp;
 391         int i;
 392
 393         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 394                   genlmsg_attrlen(gnlh, 0), NULL);
 395         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 396                 return NL_SKIP;
 397
 398         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 399                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 400                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 401                           nla_len(mcgrp), NULL);
 402                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 403                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 404                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 405                                res->group,
 406                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 407                         continue;
 408                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 409                 break;
 410         };
 411
 412         return NL_SKIP;
 413 }
 414
 415
 416 static int nl_get_multicast_id(struct nl80211_global *global,
 417                                const char *family, const char *group)
 418 {
 419         struct nl_msg *msg;
 420         int ret;
 421         struct family_data res = { group, -ENOENT };
 422
 423         msg = nlmsg_alloc();
 424         if (!msg)
 425                 return -ENOMEM;
 426         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 427                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 428             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 429                 nlmsg_free(msg);
 430                 return -1;
 431         }
 432
 433         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 434         if (ret == 0)
 435                 ret = res.id;
 436         return ret;
 437 }
 438
 439
 440 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 441                    struct nl_msg *msg, int flags, uint8_t cmd)
 442 {
 443         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 444                            0, flags, cmd, 0);
 445 }
 446
 447
 448 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 449 {
 450         if (bss->wdev_id_set)
 451                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 452         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 453 }
 454
 455
 456 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 457 {
 458         struct nl_msg *msg;
 459
 460         msg = nlmsg_alloc();
 461         if (!msg)
 462                 return NULL;
 463
 464         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 465             nl80211_set_iface_id(msg, bss) < 0) {
 466                 nlmsg_free(msg);
 467                 return NULL;
 468         }
 469
 470         return msg;
 471 }
 472
 473
 474 static struct nl_msg *
 475 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 476                     int flags, uint8_t cmd)
 477 {
 478         struct nl_msg *msg;
 479
 480         msg = nlmsg_alloc();
 481         if (!msg)
 482                 return NULL;
 483
 484         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 485             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 486                 nlmsg_free(msg);
 487                 return NULL;
 488         }
 489
 490         return msg;
 491 }
 492
 493
 494 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 495                                 uint8_t cmd)
 496 {
 497         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 498 }
 499
 500
 501 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 502 {
 503         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 504 }
 505
 506
 507 struct wiphy_idx_data {
 508         int wiphy_idx;
 509         enum nl80211_iftype nlmode;
 510         u8 *macaddr;
 511 };
 512
 513
 514 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 515 {
 516         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 517         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 518         struct wiphy_idx_data *info = arg;
 519
 520         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 521                   genlmsg_attrlen(gnlh, 0), NULL);
 522
 523         if (tb[NL80211_ATTR_WIPHY])
 524                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 525
 526         if (tb[NL80211_ATTR_IFTYPE])
 527                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 528
 529         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 530                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 531                           ETH_ALEN);
 532
 533         return NL_SKIP;
 534 }
 535
 536
 537 int nl80211_get_wiphy_index(struct i802_bss *bss)
 538 {
 539         struct nl_msg *msg;
 540         struct wiphy_idx_data data = {
 541                 .wiphy_idx = -1,
 542                 .macaddr = NULL,
 543         };
 544
 545         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 546                 return -1;
 547
 548         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 549                 return data.wiphy_idx;
 550         return -1;
 551 }
 552
 553
 554 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 555 {
 556         struct nl_msg *msg;
 557         struct wiphy_idx_data data = {
 558                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 559                 .macaddr = NULL,
 560         };
 561
 562         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 563                 return NL80211_IFTYPE_UNSPECIFIED;
 564
 565         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 566                 return data.nlmode;
 567         return NL80211_IFTYPE_UNSPECIFIED;
 568 }
 569
 570
 571 static int nl80211_get_macaddr(struct i802_bss *bss)
 572 {
 573         struct nl_msg *msg;
 574         struct wiphy_idx_data data = {
 575                 .macaddr = bss->addr,
 576         };
 577
 578         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 579                 return -1;
 580
 581         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 582 }
 583
 584
 585 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 586                                     struct nl80211_wiphy_data *w)
 587 {
 588         struct nl_msg *msg;
 589         int ret;
 590
 591         msg = nlmsg_alloc();
 592         if (!msg)
 593                 return -1;
 594
 595         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 596             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 597                 nlmsg_free(msg);
 598                 return -1;
 599         }
 600
 601         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 602         if (ret) {
 603                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 604                            "failed: ret=%d (%s)",
 605                            ret, strerror(-ret));
 606         }
 607         return ret;
 608 }
 609
 610
 611 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 612 {
 613         struct nl80211_wiphy_data *w = eloop_ctx;
 614         int res;
 615
 616         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 617
 618         res = nl_recvmsgs(handle, w->nl_cb);
 619         if (res < 0) {
 620                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 621                            __func__, res);
 622         }
 623 }
 624
 625
 626 static int process_beacon_event(struct nl_msg *msg, void *arg)
 627 {
 628         struct nl80211_wiphy_data *w = arg;
 629         struct wpa_driver_nl80211_data *drv;
 630         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 631         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 632         union wpa_event_data event;
 633
 634         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 635                   genlmsg_attrlen(gnlh, 0), NULL);
 636
 637         if (gnlh->cmd != NL80211_CMD_FRAME) {
 638                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 639                            gnlh->cmd);
 640                 return NL_SKIP;
 641         }
 642
 643         if (!tb[NL80211_ATTR_FRAME])
 644                 return NL_SKIP;
 645
 646         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 647                          wiphy_list) {
 648                 os_memset(&event, 0, sizeof(event));
 649                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 650                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 651                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 652         }
 653
 654         return NL_SKIP;
 655 }
 656
 657
 658 static struct nl80211_wiphy_data *
 659 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 660 {
 661         static DEFINE_DL_LIST(nl80211_wiphys);
 662         struct nl80211_wiphy_data *w;
 663         int wiphy_idx, found = 0;
 664         struct i802_bss *tmp_bss;
 665
 666         if (bss->wiphy_data != NULL)
 667                 return bss->wiphy_data;
 668
 669         wiphy_idx = nl80211_get_wiphy_index(bss);
 670
 671         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 672                 if (w->wiphy_idx == wiphy_idx)
 673                         goto add;
 674         }
 675
 676         /* alloc new one */
 677         w = os_zalloc(sizeof(*w));
 678         if (w == NULL)
 679                 return NULL;
 680         w->wiphy_idx = wiphy_idx;
 681         dl_list_init(&w->bsss);
 682         dl_list_init(&w->drvs);
 683
 684         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 685         if (!w->nl_cb) {
 686                 os_free(w);
 687                 return NULL;
 688         }
 689         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 690         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 691                   w);
 692
 693         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 694                                          "wiphy beacons");
 695         if (w->nl_beacons == NULL) {
 696                 os_free(w);
 697                 return NULL;
 698         }
 699
 700         if (nl80211_register_beacons(bss->drv, w)) {
 701                 nl_destroy_handles(&w->nl_beacons);
 702                 os_free(w);
 703                 return NULL;
 704         }
 705
 706         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 707
 708         dl_list_add(&nl80211_wiphys, &w->list);
 709
 710 add:
 711         /* drv entry for this bss already there? */
 712         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 713                 if (tmp_bss->drv == bss->drv) {
 714                         found = 1;
 715                         break;
 716                 }
 717         }
 718         /* if not add it */
 719         if (!found)
 720                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 721
 722         dl_list_add(&w->bsss, &bss->wiphy_list);
 723         bss->wiphy_data = w;
 724         return w;
 725 }
 726
 727
 728 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 729 {
 730         struct nl80211_wiphy_data *w = bss->wiphy_data;
 731         struct i802_bss *tmp_bss;
 732         int found = 0;
 733
 734         if (w == NULL)
 735                 return;
 736         bss->wiphy_data = NULL;
 737         dl_list_del(&bss->wiphy_list);
 738
 739         /* still any for this drv present? */
 740         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 741                 if (tmp_bss->drv == bss->drv) {
 742                         found = 1;
 743                         break;
 744                 }
 745         }
 746         /* if not remove it */
 747         if (!found)
 748                 dl_list_del(&bss->drv->wiphy_list);
 749
 750         if (!dl_list_empty(&w->bsss))
 751                 return;
 752
 753         nl80211_destroy_eloop_handle(&w->nl_beacons);
 754
 755         nl_cb_put(w->nl_cb);
 756         dl_list_del(&w->list);
 757         os_free(w);
 758 }
 759
 760
 761 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 762 {
 763         struct i802_bss *bss = priv;
 764         struct wpa_driver_nl80211_data *drv = bss->drv;
 765         if (!drv->associated)
 766                 return -1;
 767         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 768         return 0;
 769 }
 770
 771
 772 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 773 {
 774         struct i802_bss *bss = priv;
 775         struct wpa_driver_nl80211_data *drv = bss->drv;
 776         if (!drv->associated)
 777                 return -1;
 778         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 779         return drv->ssid_len;
 780 }
 781
 782
 783 static void wpa_driver_nl80211_event_newlink(
 784         struct wpa_driver_nl80211_data *drv, const char *ifname)
 785 {
 786         union wpa_event_data event;
 787
 788         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 789                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 790                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 791                                    drv->first_bss->ifname);
 792                         return;
 793                 }
 794                 if (!drv->if_removed)
 795                         return;
 796                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 797                            drv->first_bss->ifname);
 798                 drv->if_removed = 0;
 799         }
 800
 801         os_memset(&event, 0, sizeof(event));
 802         os_strlcpy(event.interface_status.ifname, ifname,
 803                    sizeof(event.interface_status.ifname));
 804         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 805         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 806 }
 807
 808
 809 static void wpa_driver_nl80211_event_dellink(
 810         struct wpa_driver_nl80211_data *drv, const char *ifname)
 811 {
 812         union wpa_event_data event;
 813
 814         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 815                 if (drv->if_removed) {
 816                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 817                                    ifname);
 818                         return;
 819                 }
 820                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 821                            ifname);
 822                 drv->if_removed = 1;
 823         } else {
 824                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 825                            ifname);
 826         }
 827
 828         os_memset(&event, 0, sizeof(event));
 829         os_strlcpy(event.interface_status.ifname, ifname,
 830                    sizeof(event.interface_status.ifname));
 831         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 832         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 833 }
 834
 835
 836 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 837                                          u8 *buf, size_t len)
 838 {
 839         int attrlen, rta_len;
 840         struct rtattr *attr;
 841
 842         attrlen = len;
 843         attr = (struct rtattr *) buf;
 844
 845         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 846         while (RTA_OK(attr, attrlen)) {
 847                 if (attr->rta_type == IFLA_IFNAME) {
 848                         if (os_strcmp(((char *) attr) + rta_len,
 849                                       drv->first_bss->ifname) == 0)
 850                                 return 1;
 851                         else
 852                                 break;
 853                 }
 854                 attr = RTA_NEXT(attr, attrlen);
 855         }
 856
 857         return 0;
 858 }
 859
 860
 861 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 862                                           int ifindex, u8 *buf, size_t len)
 863 {
 864         if (drv->ifindex == ifindex)
 865                 return 1;
 866
 867         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 868                 nl80211_check_global(drv->global);
 869                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 870                            "interface");
 871                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 872                 return 1;
 873         }
 874
 875         return 0;
 876 }
 877
 878
 879 static struct wpa_driver_nl80211_data *
 880 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 881 {
 882         struct wpa_driver_nl80211_data *drv;
 883         dl_list_for_each(drv, &global->interfaces,
 884                          struct wpa_driver_nl80211_data, list) {
 885                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 886                     have_ifidx(drv, idx))
 887                         return drv;
 888         }
 889         return NULL;
 890 }
 891
 892
 893 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 894                                                  struct ifinfomsg *ifi,
 895                                                  u8 *buf, size_t len)
 896 {
 897         struct nl80211_global *global = ctx;
 898         struct wpa_driver_nl80211_data *drv;
 899         int attrlen;
 900         struct rtattr *attr;
 901         u32 brid = 0;
 902         char namebuf[IFNAMSIZ];
 903         char ifname[IFNAMSIZ + 1];
 904         char extra[100], *pos, *end;
 905
 906         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 907         if (!drv) {
 908                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 909                            ifi->ifi_index);
 910                 return;
 911         }
 912
 913         extra[0] = '\0';
 914         pos = extra;
 915         end = pos + sizeof(extra);
 916         ifname[0] = '\0';
 917
 918         attrlen = len;
 919         attr = (struct rtattr *) buf;
 920         while (RTA_OK(attr, attrlen)) {
 921                 switch (attr->rta_type) {
 922                 case IFLA_IFNAME:
 923                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 924                                 break;
 925                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 926                         ifname[RTA_PAYLOAD(attr)] = '\0';
 927                         break;
 928                 case IFLA_MASTER:
 929                         brid = nla_get_u32((struct nlattr *) attr);
 930                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 931                         break;
 932                 case IFLA_WIRELESS:
 933                         pos += os_snprintf(pos, end - pos, " wext");
 934                         break;
 935                 case IFLA_OPERSTATE:
 936                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 937                                            nla_get_u32((struct nlattr *) attr));
 938                         break;
 939                 case IFLA_LINKMODE:
 940                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 941                                            nla_get_u32((struct nlattr *) attr));
 942                         break;
 943                 }
 944                 attr = RTA_NEXT(attr, attrlen);
 945         }
 946         extra[sizeof(extra) - 1] = '\0';
 947
 948         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 949                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 950                    ifi->ifi_flags,
 951                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 952                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 953                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 954                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 955
 956         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 957                 namebuf[0] = '\0';
 958                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 959                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) {
 960                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 961                                    "event since interface %s is up", namebuf);
 962                         drv->ignore_if_down_event = 0;
 963                         return;
 964                 }
 965                 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)",
 966                            namebuf, ifname);
 967                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 968                         wpa_printf(MSG_DEBUG,
 969                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 970                                    drv->first_bss->ifname);
 971                 } else if (drv->ignore_if_down_event) {
 972                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 973                                    "event generated by mode change");
 974                         drv->ignore_if_down_event = 0;
 975                 } else {
 976                         drv->if_disabled = 1;
 977                         wpa_supplicant_event(drv->ctx,
 978                                              EVENT_INTERFACE_DISABLED, NULL);
 979
 980                         /*
 981                          * Try to get drv again, since it may be removed as
 982                          * part of the EVENT_INTERFACE_DISABLED handling for
 983                          * dynamic interfaces
 984                          */
 985                         drv = nl80211_find_drv(global, ifi->ifi_index,
 986                                                buf, len);
 987                         if (!drv)
 988                                 return;
 989                 }
 990         }
 991
 992         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 993                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 994                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
 995                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 996                                    "event since interface %s is down",
 997                                    namebuf);
 998                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 999                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1000                                    "event since interface %s does not exist",
1001                                    drv->first_bss->ifname);
1002                 } else if (drv->if_removed) {
1003                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1004                                    "event since interface %s is marked "
1005                                    "removed", drv->first_bss->ifname);
1006                 } else {
1007                         struct i802_bss *bss;
1008                         u8 addr[ETH_ALEN];
1009
1010                         /* Re-read MAC address as it may have changed */
1011                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1012                         if (bss &&
1013                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1014                                                bss->ifname, addr) < 0) {
1015                                 wpa_printf(MSG_DEBUG,
1016                                            "nl80211: %s: failed to re-read MAC address",
1017                                            bss->ifname);
1018                         } else if (bss &&
1019                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1020                                 wpa_printf(MSG_DEBUG,
1021                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1022                                            MACSTR " to " MACSTR,
1023                                            ifi->ifi_index, bss->ifname,
1024                                            MAC2STR(bss->addr),
1025                                            MAC2STR(addr));
1026                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1027                         }
1028
1029                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1030                         drv->if_disabled = 0;
1031                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1032                                              NULL);
1033                 }
1034         }
1035
1036         /*
1037          * Some drivers send the association event before the operup event--in
1038          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1039          * fails. This will hit us when wpa_supplicant does not need to do
1040          * IEEE 802.1X authentication
1041          */
1042         if (drv->operstate == 1 &&
1043             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1044             !(ifi->ifi_flags & IFF_RUNNING)) {
1045                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1046                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1047                                        -1, IF_OPER_UP);
1048         }
1049
1050         if (ifname[0])
1051                 wpa_driver_nl80211_event_newlink(drv, ifname);
1052
1053         if (ifi->ifi_family == AF_BRIDGE && brid) {
1054                 struct i802_bss *bss;
1055
1056                 /* device has been added to bridge */
1057                 if (!if_indextoname(brid, namebuf)) {
1058                         wpa_printf(MSG_DEBUG,
1059                                    "nl80211: Could not find bridge ifname for ifindex %u",
1060                                    brid);
1061                         return;
1062                 }
1063                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1064                            brid, namebuf);
1065                 add_ifidx(drv, brid);
1066
1067                 for (bss = drv->first_bss; bss; bss = bss->next) {
1068                         if (os_strcmp(ifname, bss->ifname) == 0) {
1069                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1070                                 break;
1071                         }
1072                 }
1073         }
1074 }
1075
1076
1077 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1078                                                  struct ifinfomsg *ifi,
1079                                                  u8 *buf, size_t len)
1080 {
1081         struct nl80211_global *global = ctx;
1082         struct wpa_driver_nl80211_data *drv;
1083         int attrlen;
1084         struct rtattr *attr;
1085         u32 brid = 0;
1086         char ifname[IFNAMSIZ + 1];
1087         char extra[100], *pos, *end;
1088
1089         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1090         if (!drv) {
1091                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1092                            ifi->ifi_index);
1093                 return;
1094         }
1095
1096         extra[0] = '\0';
1097         pos = extra;
1098         end = pos + sizeof(extra);
1099         ifname[0] = '\0';
1100
1101         attrlen = len;
1102         attr = (struct rtattr *) buf;
1103         while (RTA_OK(attr, attrlen)) {
1104                 switch (attr->rta_type) {
1105                 case IFLA_IFNAME:
1106                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1107                                 break;
1108                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1109                         ifname[RTA_PAYLOAD(attr)] = '\0';
1110                         break;
1111                 case IFLA_MASTER:
1112                         brid = nla_get_u32((struct nlattr *) attr);
1113                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1114                         break;
1115                 case IFLA_OPERSTATE:
1116                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1117                                            nla_get_u32((struct nlattr *) attr));
1118                         break;
1119                 case IFLA_LINKMODE:
1120                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1121                                            nla_get_u32((struct nlattr *) attr));
1122                         break;
1123                 }
1124                 attr = RTA_NEXT(attr, attrlen);
1125         }
1126         extra[sizeof(extra) - 1] = '\0';
1127
1128         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1129                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1130                    ifi->ifi_flags,
1131                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1132                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1133                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1134                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1135
1136         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1137                 wpa_driver_nl80211_event_dellink(drv, ifname);
1138
1139         if (ifi->ifi_family == AF_BRIDGE && brid) {
1140                 /* device has been removed from bridge */
1141                 char namebuf[IFNAMSIZ];
1142
1143                 if (!if_indextoname(brid, namebuf)) {
1144                         wpa_printf(MSG_DEBUG,
1145                                    "nl80211: Could not find bridge ifname for ifindex %u",
1146                                    brid);
1147                 } else {
1148                         wpa_printf(MSG_DEBUG,
1149                                    "nl80211: Remove ifindex %u for bridge %s",
1150                                    brid, namebuf);
1151                 }
1152                 del_ifidx(drv, brid);
1153         }
1154 }
1155
1156
1157 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1158 {
1159         struct nl_msg *msg;
1160         int ret;
1161         struct nl80211_bss_info_arg arg;
1162
1163         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1164         os_memset(&arg, 0, sizeof(arg));
1165         arg.drv = drv;
1166         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1167         if (ret == 0) {
1168                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1169                         arg.ibss_freq : arg.assoc_freq;
1170                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1171                            "associated BSS from scan results: %u MHz", freq);
1172                 if (freq)
1173                         drv->assoc_freq = freq;
1174                 return drv->assoc_freq;
1175         }
1176         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1177                    "(%s)", ret, strerror(-ret));
1178         return drv->assoc_freq;
1179 }
1180
1181
1182 static int get_link_signal(struct nl_msg *msg, void *arg)
1183 {
1184         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1185         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1186         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1187         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1188                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1189                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1190                 [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = { .type = NLA_U8 },
1191         };
1192         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1193         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1194                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1195                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1196                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1197                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1198         };
1199         struct wpa_signal_info *sig_change = arg;
1200
1201         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1202                   genlmsg_attrlen(gnlh, 0), NULL);
1203         if (!tb[NL80211_ATTR_STA_INFO] ||
1204             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1205                              tb[NL80211_ATTR_STA_INFO], policy))
1206                 return NL_SKIP;
1207         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1208                 return NL_SKIP;
1209
1210         sig_change->current_signal =
1211                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1212
1213         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1214                 sig_change->avg_signal =
1215                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1216         else
1217                 sig_change->avg_signal = 0;
1218
1219         if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG])
1220                 sig_change->avg_beacon_signal =
1221                         (s8)
1222                         nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]);
1223         else
1224                 sig_change->avg_beacon_signal = 0;
1225
1226         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1227                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1228                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1229                                      rate_policy)) {
1230                         sig_change->current_txrate = 0;
1231                 } else {
1232                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1233                                 sig_change->current_txrate =
1234                                         nla_get_u16(rinfo[
1235                                              NL80211_RATE_INFO_BITRATE]) * 100;
1236                         }
1237                 }
1238         }
1239
1240         return NL_SKIP;
1241 }
1242
1243
1244 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1245                             struct wpa_signal_info *sig)
1246 {
1247         struct nl_msg *msg;
1248
1249         sig->current_signal = -9999;
1250         sig->current_txrate = 0;
1251
1252         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1253             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1254                 nlmsg_free(msg);
1255                 return -ENOBUFS;
1256         }
1257
1258         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1259 }
1260
1261
1262 static int get_link_noise(struct nl_msg *msg, void *arg)
1263 {
1264         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1265         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1266         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1267         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1268                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1269                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1270         };
1271         struct wpa_signal_info *sig_change = arg;
1272
1273         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1274                   genlmsg_attrlen(gnlh, 0), NULL);
1275
1276         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1277                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1278                 return NL_SKIP;
1279         }
1280
1281         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1282                              tb[NL80211_ATTR_SURVEY_INFO],
1283                              survey_policy)) {
1284                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1285                            "attributes!");
1286                 return NL_SKIP;
1287         }
1288
1289         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1290                 return NL_SKIP;
1291
1292         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1293             sig_change->frequency)
1294                 return NL_SKIP;
1295
1296         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1297                 return NL_SKIP;
1298
1299         sig_change->current_noise =
1300                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1301
1302         return NL_SKIP;
1303 }
1304
1305
1306 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1307                            struct wpa_signal_info *sig_change)
1308 {
1309         struct nl_msg *msg;
1310
1311         sig_change->current_noise = 9999;
1312         sig_change->frequency = drv->assoc_freq;
1313
1314         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1315         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1316 }
1317
1318
1319 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1320                                              void *handle)
1321 {
1322         struct nl_cb *cb = eloop_ctx;
1323         int res;
1324
1325         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1326
1327         res = nl_recvmsgs(handle, cb);
1328         if (res < 0) {
1329                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1330                            __func__, res);
1331         }
1332 }
1333
1334
1335 /**
1336  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1337  * @priv: driver_nl80211 private data
1338  * @alpha2_arg: country to which to switch to
1339  * Returns: 0 on success, -1 on failure
1340  *
1341  * This asks nl80211 to set the regulatory domain for given
1342  * country ISO / IEC alpha2.
1343  */
1344 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1345 {
1346         struct i802_bss *bss = priv;
1347         struct wpa_driver_nl80211_data *drv = bss->drv;
1348         char alpha2[3];
1349         struct nl_msg *msg;
1350
1351         msg = nlmsg_alloc();
1352         if (!msg)
1353                 return -ENOMEM;
1354
1355         alpha2[0] = alpha2_arg[0];
1356         alpha2[1] = alpha2_arg[1];
1357         alpha2[2] = '\0';
1358
1359         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1360             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1361                 nlmsg_free(msg);
1362                 return -EINVAL;
1363         }
1364         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1365                 return -EINVAL;
1366         return 0;
1367 }
1368
1369
1370 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1371 {
1372         char *alpha2 = arg;
1373         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1374         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1375
1376         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1377                   genlmsg_attrlen(gnlh, 0), NULL);
1378         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1379                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1380                 return NL_SKIP;
1381         }
1382         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1383         return NL_SKIP;
1384 }
1385
1386
1387 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1388 {
1389         struct i802_bss *bss = priv;
1390         struct wpa_driver_nl80211_data *drv = bss->drv;
1391         struct nl_msg *msg;
1392         int ret;
1393
1394         msg = nlmsg_alloc();
1395         if (!msg)
1396                 return -ENOMEM;
1397
1398         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1399         alpha2[0] = '\0';
1400         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1401         if (!alpha2[0])
1402                 ret = -1;
1403
1404         return ret;
1405 }
1406
1407
1408 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1409 {
1410         int ret;
1411
1412         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1413         if (global->nl_cb == NULL) {
1414                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1415                            "callbacks");
1416                 return -1;
1417         }
1418
1419         global->nl = nl_create_handle(global->nl_cb, "nl");
1420         if (global->nl == NULL)
1421                 goto err;
1422
1423         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1424         if (global->nl80211_id < 0) {
1425                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1426                            "found");
1427                 goto err;
1428         }
1429
1430         global->nl_event = nl_create_handle(global->nl_cb, "event");
1431         if (global->nl_event == NULL)
1432                 goto err;
1433
1434         ret = nl_get_multicast_id(global, "nl80211", "scan");
1435         if (ret >= 0)
1436                 ret = nl_socket_add_membership(global->nl_event, ret);
1437         if (ret < 0) {
1438                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1439                            "membership for scan events: %d (%s)",
1440                            ret, strerror(-ret));
1441                 goto err;
1442         }
1443
1444         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1445         if (ret >= 0)
1446                 ret = nl_socket_add_membership(global->nl_event, ret);
1447         if (ret < 0) {
1448                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1449                            "membership for mlme events: %d (%s)",
1450                            ret, strerror(-ret));
1451                 goto err;
1452         }
1453
1454         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1455         if (ret >= 0)
1456                 ret = nl_socket_add_membership(global->nl_event, ret);
1457         if (ret < 0) {
1458                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1459                            "membership for regulatory events: %d (%s)",
1460                            ret, strerror(-ret));
1461                 /* Continue without regulatory events */
1462         }
1463
1464         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1465         if (ret >= 0)
1466                 ret = nl_socket_add_membership(global->nl_event, ret);
1467         if (ret < 0) {
1468                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1469                            "membership for vendor events: %d (%s)",
1470                            ret, strerror(-ret));
1471                 /* Continue without vendor events */
1472         }
1473
1474         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1475                   no_seq_check, NULL);
1476         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1477                   process_global_event, global);
1478
1479         nl80211_register_eloop_read(&global->nl_event,
1480                                     wpa_driver_nl80211_event_receive,
1481                                     global->nl_cb);
1482
1483         return 0;
1484
1485 err:
1486         nl_destroy_handles(&global->nl_event);
1487         nl_destroy_handles(&global->nl);
1488         nl_cb_put(global->nl_cb);
1489         global->nl_cb = NULL;
1490         return -1;
1491 }
1492
1493
1494 static void nl80211_check_global(struct nl80211_global *global)
1495 {
1496         struct nl_handle *handle;
1497         const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL };
1498         int ret;
1499         unsigned int i;
1500
1501         /*
1502          * Try to re-add memberships to handle case of cfg80211 getting reloaded
1503          * and all registration having been cleared.
1504          */
1505         handle = (void *) (((intptr_t) global->nl_event) ^
1506                            ELOOP_SOCKET_INVALID);
1507
1508         for (i = 0; groups[i]; i++) {
1509                 ret = nl_get_multicast_id(global, "nl80211", groups[i]);
1510                 if (ret >= 0)
1511                         ret = nl_socket_add_membership(handle, ret);
1512                 if (ret < 0) {
1513                         wpa_printf(MSG_INFO,
1514                                    "nl80211: Could not re-add multicast membership for %s events: %d (%s)",
1515                                    groups[i], ret, strerror(-ret));
1516                 }
1517         }
1518 }
1519
1520
1521 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1522 {
1523         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1524         /*
1525          * This may be for any interface; use ifdown event to disable
1526          * interface.
1527          */
1528 }
1529
1530
1531 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1532 {
1533         struct wpa_driver_nl80211_data *drv = ctx;
1534         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1535         if (i802_set_iface_flags(drv->first_bss, 1)) {
1536                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1537                            "after rfkill unblock");
1538                 return;
1539         }
1540
1541         if (is_p2p_net_interface(drv->nlmode))
1542                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
1543
1544         /* rtnetlink ifup handler will report interface as enabled */
1545 }
1546
1547
1548 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1549                                                       void *eloop_ctx,
1550                                                       void *handle)
1551 {
1552         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1553         u8 data[2048];
1554         struct msghdr msg;
1555         struct iovec entry;
1556         u8 control[512];
1557         struct cmsghdr *cmsg;
1558         int res, found_ee = 0, found_wifi = 0, acked = 0;
1559         union wpa_event_data event;
1560
1561         memset(&msg, 0, sizeof(msg));
1562         msg.msg_iov = &entry;
1563         msg.msg_iovlen = 1;
1564         entry.iov_base = data;
1565         entry.iov_len = sizeof(data);
1566         msg.msg_control = &control;
1567         msg.msg_controllen = sizeof(control);
1568
1569         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1570         /* if error or not fitting 802.3 header, return */
1571         if (res < 14)
1572                 return;
1573
1574         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1575         {
1576                 if (cmsg->cmsg_level == SOL_SOCKET &&
1577                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1578                         int *ack;
1579
1580                         found_wifi = 1;
1581                         ack = (void *)CMSG_DATA(cmsg);
1582                         acked = *ack;
1583                 }
1584
1585                 if (cmsg->cmsg_level == SOL_PACKET &&
1586                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1587                         struct sock_extended_err *err =
1588                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1589
1590                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1591                                 found_ee = 1;
1592                 }
1593         }
1594
1595         if (!found_ee || !found_wifi)
1596                 return;
1597
1598         memset(&event, 0, sizeof(event));
1599         event.eapol_tx_status.dst = data;
1600         event.eapol_tx_status.data = data + 14;
1601         event.eapol_tx_status.data_len = res - 14;
1602         event.eapol_tx_status.ack = acked;
1603         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1604 }
1605
1606
1607 static int nl80211_init_bss(struct i802_bss *bss)
1608 {
1609         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1610         if (!bss->nl_cb)
1611                 return -1;
1612
1613         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1614                   no_seq_check, NULL);
1615         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1616                   process_bss_event, bss);
1617
1618         return 0;
1619 }
1620
1621
1622 static void nl80211_destroy_bss(struct i802_bss *bss)
1623 {
1624         nl_cb_put(bss->nl_cb);
1625         bss->nl_cb = NULL;
1626 }
1627
1628
1629 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1630                                           void *global_priv, int hostapd,
1631                                           const u8 *set_addr,
1632                                           const char *driver_params)
1633 {
1634         struct wpa_driver_nl80211_data *drv;
1635         struct rfkill_config *rcfg;
1636         struct i802_bss *bss;
1637
1638         if (global_priv == NULL)
1639                 return NULL;
1640         drv = os_zalloc(sizeof(*drv));
1641         if (drv == NULL)
1642                 return NULL;
1643         drv->global = global_priv;
1644         drv->ctx = ctx;
1645         drv->hostapd = !!hostapd;
1646         drv->eapol_sock = -1;
1647
1648         /*
1649          * There is no driver capability flag for this, so assume it is
1650          * supported and disable this on first attempt to use if the driver
1651          * rejects the command due to missing support.
1652          */
1653         drv->set_rekey_offload = 1;
1654
1655         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1656         drv->if_indices = drv->default_if_indices;
1657
1658         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1659         if (!drv->first_bss) {
1660                 os_free(drv);
1661                 return NULL;
1662         }
1663         bss = drv->first_bss;
1664         bss->drv = drv;
1665         bss->ctx = ctx;
1666
1667         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1668         drv->monitor_ifidx = -1;
1669         drv->monitor_sock = -1;
1670         drv->eapol_tx_sock = -1;
1671         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1672
1673         if (nl80211_init_bss(bss))
1674                 goto failed;
1675
1676         rcfg = os_zalloc(sizeof(*rcfg));
1677         if (rcfg == NULL)
1678                 goto failed;
1679         rcfg->ctx = drv;
1680         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1681         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1682         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1683         drv->rfkill = rfkill_init(rcfg);
1684         if (drv->rfkill == NULL) {
1685                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1686                 os_free(rcfg);
1687         }
1688
1689         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1690                 drv->start_iface_up = 1;
1691
1692         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1693                 goto failed;
1694
1695         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1696         if (drv->eapol_tx_sock < 0)
1697                 goto failed;
1698
1699         if (drv->data_tx_status) {
1700                 int enabled = 1;
1701
1702                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1703                                &enabled, sizeof(enabled)) < 0) {
1704                         wpa_printf(MSG_DEBUG,
1705                                 "nl80211: wifi status sockopt failed\n");
1706                         drv->data_tx_status = 0;
1707                         if (!drv->use_monitor)
1708                                 drv->capa.flags &=
1709                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1710                 } else {
1711                         eloop_register_read_sock(drv->eapol_tx_sock,
1712                                 wpa_driver_nl80211_handle_eapol_tx_status,
1713                                 drv, NULL);
1714                 }
1715         }
1716
1717         if (drv->global) {
1718                 nl80211_check_global(drv->global);
1719                 dl_list_add(&drv->global->interfaces, &drv->list);
1720                 drv->in_interface_list = 1;
1721         }
1722
1723         return bss;
1724
1725 failed:
1726         wpa_driver_nl80211_deinit(bss);
1727         return NULL;
1728 }
1729
1730
1731 /**
1732  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1733  * @ctx: context to be used when calling wpa_supplicant functions,
1734  * e.g., wpa_supplicant_event()
1735  * @ifname: interface name, e.g., wlan0
1736  * @global_priv: private driver global data from global_init()
1737  * Returns: Pointer to private data, %NULL on failure
1738  */
1739 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1740                                       void *global_priv)
1741 {
1742         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1743                                            NULL);
1744 }
1745
1746
1747 static int nl80211_register_frame(struct i802_bss *bss,
1748                                   struct nl_handle *nl_handle,
1749                                   u16 type, const u8 *match, size_t match_len)
1750 {
1751         struct wpa_driver_nl80211_data *drv = bss->drv;
1752         struct nl_msg *msg;
1753         int ret;
1754         char buf[30];
1755
1756         buf[0] = '\0';
1757         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1758         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1759                    type, fc2str(type), nl_handle, buf);
1760
1761         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1762             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1763             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1764                 nlmsg_free(msg);
1765                 return -1;
1766         }
1767
1768         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1769         if (ret) {
1770                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1771                            "failed (type=%u): ret=%d (%s)",
1772                            type, ret, strerror(-ret));
1773                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1774                             match, match_len);
1775         }
1776         return ret;
1777 }
1778
1779
1780 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1781 {
1782         if (bss->nl_mgmt) {
1783                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1784                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1785                 return -1;
1786         }
1787
1788         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1789         if (bss->nl_mgmt == NULL)
1790                 return -1;
1791
1792         return 0;
1793 }
1794
1795
1796 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1797 {
1798         nl80211_register_eloop_read(&bss->nl_mgmt,
1799                                     wpa_driver_nl80211_event_receive,
1800                                     bss->nl_cb);
1801 }
1802
1803
1804 static int nl80211_register_action_frame(struct i802_bss *bss,
1805                                          const u8 *match, size_t match_len)
1806 {
1807         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1808         return nl80211_register_frame(bss, bss->nl_mgmt,
1809                                       type, match, match_len);
1810 }
1811
1812
1813 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1814 {
1815         struct wpa_driver_nl80211_data *drv = bss->drv;
1816         int ret = 0;
1817
1818         if (nl80211_alloc_mgmt_handle(bss))
1819                 return -1;
1820         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1821                    "handle %p", bss->nl_mgmt);
1822
1823         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1824                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1825
1826                 /* register for any AUTH message */
1827                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1828         }
1829
1830 #ifdef CONFIG_INTERWORKING
1831         /* QoS Map Configure */
1832         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1833                 ret = -1;
1834 #endif /* CONFIG_INTERWORKING */
1835 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1836         /* GAS Initial Request */
1837         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1838                 ret = -1;
1839         /* GAS Initial Response */
1840         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1841                 ret = -1;
1842         /* GAS Comeback Request */
1843         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1844                 ret = -1;
1845         /* GAS Comeback Response */
1846         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1847                 ret = -1;
1848         /* Protected GAS Initial Request */
1849         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1850                 ret = -1;
1851         /* Protected GAS Initial Response */
1852         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1853                 ret = -1;
1854         /* Protected GAS Comeback Request */
1855         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1856                 ret = -1;
1857         /* Protected GAS Comeback Response */
1858         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1859                 ret = -1;
1860 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1861 #ifdef CONFIG_P2P
1862         /* P2P Public Action */
1863         if (nl80211_register_action_frame(bss,
1864                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1865                                           6) < 0)
1866                 ret = -1;
1867         /* P2P Action */
1868         if (nl80211_register_action_frame(bss,
1869                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1870                                           5) < 0)
1871                 ret = -1;
1872 #endif /* CONFIG_P2P */
1873 #ifdef CONFIG_IEEE80211W
1874         /* SA Query Response */
1875         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1876                 ret = -1;
1877 #endif /* CONFIG_IEEE80211W */
1878 #ifdef CONFIG_TDLS
1879         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1880                 /* TDLS Discovery Response */
1881                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1882                     0)
1883                         ret = -1;
1884         }
1885 #endif /* CONFIG_TDLS */
1886 #ifdef CONFIG_FST
1887         /* FST Action frames */
1888         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
1889                 ret = -1;
1890 #endif /* CONFIG_FST */
1891
1892         /* FT Action frames */
1893         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1894                 ret = -1;
1895         else
1896                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1897                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1898
1899         /* WNM - BSS Transition Management Request */
1900         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1901                 ret = -1;
1902         /* WNM-Sleep Mode Response */
1903         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1904                 ret = -1;
1905
1906 #ifdef CONFIG_HS20
1907         /* WNM-Notification */
1908         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1909                 ret = -1;
1910 #endif /* CONFIG_HS20 */
1911
1912         /* WMM-AC ADDTS Response */
1913         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1914                 ret = -1;
1915
1916         /* WMM-AC DELTS */
1917         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1918                 ret = -1;
1919
1920         /* Radio Measurement - Neighbor Report Response */
1921         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1922                 ret = -1;
1923
1924         /* Radio Measurement - Link Measurement Request */
1925         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1926             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1927                 ret = -1;
1928
1929         nl80211_mgmt_handle_register_eloop(bss);
1930
1931         return ret;
1932 }
1933
1934
1935 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1936 {
1937         int ret = 0;
1938
1939         if (nl80211_alloc_mgmt_handle(bss))
1940                 return -1;
1941
1942         wpa_printf(MSG_DEBUG,
1943                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1944                    bss->nl_mgmt);
1945
1946         /* Auth frames for mesh SAE */
1947         if (nl80211_register_frame(bss, bss->nl_mgmt,
1948                                    (WLAN_FC_TYPE_MGMT << 2) |
1949                                    (WLAN_FC_STYPE_AUTH << 4),
1950                                    NULL, 0) < 0)
1951                 ret = -1;
1952
1953         /* Mesh peering open */
1954         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1955                 ret = -1;
1956         /* Mesh peering confirm */
1957         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1958                 ret = -1;
1959         /* Mesh peering close */
1960         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1961                 ret = -1;
1962
1963         nl80211_mgmt_handle_register_eloop(bss);
1964
1965         return ret;
1966 }
1967
1968
1969 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1970 {
1971         struct nl_msg *msg;
1972         int ret;
1973
1974         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1975         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1976         if (ret) {
1977                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1978                            "failed: ret=%d (%s)",
1979                            ret, strerror(-ret));
1980         }
1981         return ret;
1982 }
1983
1984
1985 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1986 {
1987         static const int stypes[] = {
1988                 WLAN_FC_STYPE_AUTH,
1989                 WLAN_FC_STYPE_ASSOC_REQ,
1990                 WLAN_FC_STYPE_REASSOC_REQ,
1991                 WLAN_FC_STYPE_DISASSOC,
1992                 WLAN_FC_STYPE_DEAUTH,
1993                 WLAN_FC_STYPE_ACTION,
1994                 WLAN_FC_STYPE_PROBE_REQ,
1995 /* Beacon doesn't work as mac80211 doesn't currently allow
1996  * it, but it wouldn't really be the right thing anyway as
1997  * it isn't per interface ... maybe just dump the scan
1998  * results periodically for OLBC?
1999  */
2000                 /* WLAN_FC_STYPE_BEACON, */
2001         };
2002         unsigned int i;
2003
2004         if (nl80211_alloc_mgmt_handle(bss))
2005                 return -1;
2006         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2007                    "handle %p", bss->nl_mgmt);
2008
2009         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2010                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2011                                            (WLAN_FC_TYPE_MGMT << 2) |
2012                                            (stypes[i] << 4),
2013                                            NULL, 0) < 0) {
2014                         goto out_err;
2015                 }
2016         }
2017
2018         if (nl80211_register_spurious_class3(bss))
2019                 goto out_err;
2020
2021         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2022                 goto out_err;
2023
2024         nl80211_mgmt_handle_register_eloop(bss);
2025         return 0;
2026
2027 out_err:
2028         nl_destroy_handles(&bss->nl_mgmt);
2029         return -1;
2030 }
2031
2032
2033 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2034 {
2035         if (nl80211_alloc_mgmt_handle(bss))
2036                 return -1;
2037         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2038                    "handle %p (device SME)", bss->nl_mgmt);
2039
2040         if (nl80211_register_frame(bss, bss->nl_mgmt,
2041                                    (WLAN_FC_TYPE_MGMT << 2) |
2042                                    (WLAN_FC_STYPE_ACTION << 4),
2043                                    NULL, 0) < 0)
2044                 goto out_err;
2045
2046         nl80211_mgmt_handle_register_eloop(bss);
2047         return 0;
2048
2049 out_err:
2050         nl_destroy_handles(&bss->nl_mgmt);
2051         return -1;
2052 }
2053
2054
2055 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2056 {
2057         if (bss->nl_mgmt == NULL)
2058                 return;
2059         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2060                    "(%s)", bss->nl_mgmt, reason);
2061         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2062
2063         nl80211_put_wiphy_data_ap(bss);
2064 }
2065
2066
2067 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2068 {
2069         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2070 }
2071
2072
2073 static void nl80211_del_p2pdev(struct i802_bss *bss)
2074 {
2075         struct nl_msg *msg;
2076         int ret;
2077
2078         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2079         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2080
2081         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2082                    bss->ifname, (long long unsigned int) bss->wdev_id,
2083                    strerror(-ret));
2084 }
2085
2086
2087 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2088 {
2089         struct nl_msg *msg;
2090         int ret;
2091
2092         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2093                               NL80211_CMD_STOP_P2P_DEVICE);
2094         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2095
2096         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2097                    start ? "Start" : "Stop",
2098                    bss->ifname, (long long unsigned int) bss->wdev_id,
2099                    strerror(-ret));
2100         return ret;
2101 }
2102
2103
2104 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2105 {
2106         enum nl80211_iftype nlmode;
2107
2108         nlmode = nl80211_get_ifmode(bss);
2109         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2110                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2111                                              bss->ifname, up);
2112         }
2113
2114         /* P2P Device has start/stop which is equivalent */
2115         return nl80211_set_p2pdev(bss, up);
2116 }
2117
2118
2119 #ifdef CONFIG_TESTING_OPTIONS
2120 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2121 {
2122         /* struct wpa_driver_nl80211_data *drv = arg; */
2123         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2124         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2125
2126
2127         wpa_printf(MSG_DEBUG,
2128                    "nl80211: QCA vendor test command response received");
2129
2130         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2131                   genlmsg_attrlen(gnlh, 0), NULL);
2132         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2133                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2134                 return NL_SKIP;
2135         }
2136
2137         wpa_hexdump(MSG_DEBUG,
2138                     "nl80211: Received QCA vendor test command response",
2139                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2140                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2141
2142         return NL_SKIP;
2143 }
2144 #endif /* CONFIG_TESTING_OPTIONS */
2145
2146
2147 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2148 {
2149 #ifdef CONFIG_TESTING_OPTIONS
2150         struct nl_msg *msg;
2151         struct nlattr *params;
2152         int ret;
2153
2154         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2155             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2156             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2157                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2158             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2159             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2160                 nlmsg_free(msg);
2161                 return;
2162         }
2163         nla_nest_end(msg, params);
2164
2165         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2166         wpa_printf(MSG_DEBUG,
2167                    "nl80211: QCA vendor test command returned %d (%s)",
2168                    ret, strerror(-ret));
2169 #endif /* CONFIG_TESTING_OPTIONS */
2170 }
2171
2172
2173 static int
2174 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2175                                    const u8 *set_addr, int first,
2176                                    const char *driver_params)
2177 {
2178         struct i802_bss *bss = drv->first_bss;
2179         int send_rfkill_event = 0;
2180         enum nl80211_iftype nlmode;
2181
2182         drv->ifindex = if_nametoindex(bss->ifname);
2183         bss->ifindex = drv->ifindex;
2184         bss->wdev_id = drv->global->if_add_wdevid;
2185         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2186
2187         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2188         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2189         drv->global->if_add_wdevid_set = 0;
2190
2191         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2192                 bss->static_ap = 1;
2193
2194         if (wpa_driver_nl80211_capa(drv))
2195                 return -1;
2196
2197         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2198                 return -1;
2199
2200         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2201                    bss->ifname, drv->phyname);
2202
2203         if (set_addr &&
2204             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2205              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2206                                 set_addr)))
2207                 return -1;
2208
2209         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2210                 drv->start_mode_ap = 1;
2211
2212         if (drv->hostapd || bss->static_ap)
2213                 nlmode = NL80211_IFTYPE_AP;
2214         else if (bss->if_dynamic)
2215                 nlmode = nl80211_get_ifmode(bss);
2216         else
2217                 nlmode = NL80211_IFTYPE_STATION;
2218
2219         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2220                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2221                 return -1;
2222         }
2223
2224         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2225                 nl80211_get_macaddr(bss);
2226
2227         if (!rfkill_is_blocked(drv->rfkill)) {
2228                 int ret = i802_set_iface_flags(bss, 1);
2229                 if (ret) {
2230                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2231                                    "interface '%s' UP", bss->ifname);
2232                         return ret;
2233                 }
2234
2235                 if (is_p2p_net_interface(nlmode))
2236                         nl80211_disable_11b_rates(bss->drv,
2237                                                   bss->drv->ifindex, 1);
2238
2239                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2240                         return ret;
2241         } else {
2242                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2243                            "interface '%s' due to rfkill", bss->ifname);
2244                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2245                         return 0;
2246                 drv->if_disabled = 1;
2247                 send_rfkill_event = 1;
2248         }
2249
2250         if (!drv->hostapd)
2251                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2252                                        1, IF_OPER_DORMANT);
2253
2254         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2255                                bss->addr))
2256                 return -1;
2257         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2258
2259         if (send_rfkill_event) {
2260                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2261                                        drv, drv->ctx);
2262         }
2263
2264         if (drv->vendor_cmd_test_avail)
2265                 qca_vendor_test(drv);
2266
2267         return 0;
2268 }
2269
2270
2271 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2272 {
2273         struct nl_msg *msg;
2274
2275         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2276                    drv->ifindex);
2277         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2278         return send_and_recv_msgs(drv, msg, NULL, NULL);
2279 }
2280
2281
2282 /**
2283  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2284  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2285  *
2286  * Shut down driver interface and processing of driver events. Free
2287  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2288  */
2289 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2290 {
2291         struct wpa_driver_nl80211_data *drv = bss->drv;
2292
2293         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2294                    bss->ifname, drv->disabled_11b_rates);
2295
2296         bss->in_deinit = 1;
2297         if (drv->data_tx_status)
2298                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2299         if (drv->eapol_tx_sock >= 0)
2300                 close(drv->eapol_tx_sock);
2301
2302         if (bss->nl_preq)
2303                 wpa_driver_nl80211_probe_req_report(bss, 0);
2304         if (bss->added_if_into_bridge) {
2305                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2306                                     bss->ifname) < 0)
2307                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2308                                    "interface %s from bridge %s: %s",
2309                                    bss->ifname, bss->brname, strerror(errno));
2310                 if (drv->rtnl_sk)
2311                         nl80211_handle_destroy(drv->rtnl_sk);
2312         }
2313         if (bss->added_bridge) {
2314                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2315                                           0) < 0)
2316                         wpa_printf(MSG_INFO,
2317                                    "nl80211: Could not set bridge %s down",
2318                                    bss->brname);
2319                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2320                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2321                                    "bridge %s: %s",
2322                                    bss->brname, strerror(errno));
2323         }
2324
2325         nl80211_remove_monitor_interface(drv);
2326
2327         if (is_ap_interface(drv->nlmode))
2328                 wpa_driver_nl80211_del_beacon(drv);
2329
2330         if (drv->eapol_sock >= 0) {
2331                 eloop_unregister_read_sock(drv->eapol_sock);
2332                 close(drv->eapol_sock);
2333         }
2334
2335         if (drv->if_indices != drv->default_if_indices)
2336                 os_free(drv->if_indices);
2337
2338         if (drv->disabled_11b_rates)
2339                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2340
2341         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2342                                IF_OPER_UP);
2343         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2344         rfkill_deinit(drv->rfkill);
2345
2346         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2347
2348         if (!drv->start_iface_up)
2349                 (void) i802_set_iface_flags(bss, 0);
2350
2351         if (drv->addr_changed) {
2352                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2353                                           0) < 0) {
2354                         wpa_printf(MSG_DEBUG,
2355                                    "nl80211: Could not set interface down to restore permanent MAC address");
2356                 }
2357                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2358                                        drv->perm_addr) < 0) {
2359                         wpa_printf(MSG_DEBUG,
2360                                    "nl80211: Could not restore permanent MAC address");
2361                 }
2362         }
2363
2364         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2365                 if (!drv->hostapd || !drv->start_mode_ap)
2366                         wpa_driver_nl80211_set_mode(bss,
2367                                                     NL80211_IFTYPE_STATION);
2368                 nl80211_mgmt_unsubscribe(bss, "deinit");
2369         } else {
2370                 nl80211_mgmt_unsubscribe(bss, "deinit");
2371                 nl80211_del_p2pdev(bss);
2372         }
2373
2374         nl80211_destroy_bss(drv->first_bss);
2375
2376         os_free(drv->filter_ssids);
2377
2378         os_free(drv->auth_ie);
2379
2380         if (drv->in_interface_list)
2381                 dl_list_del(&drv->list);
2382
2383         os_free(drv->extended_capa);
2384         os_free(drv->extended_capa_mask);
2385         os_free(drv->first_bss);
2386         os_free(drv);
2387 }
2388
2389
2390 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2391 {
2392         switch (alg) {
2393         case WPA_ALG_WEP:
2394                 if (key_len == 5)
2395                         return WLAN_CIPHER_SUITE_WEP40;
2396                 return WLAN_CIPHER_SUITE_WEP104;
2397         case WPA_ALG_TKIP:
2398                 return WLAN_CIPHER_SUITE_TKIP;
2399         case WPA_ALG_CCMP:
2400                 return WLAN_CIPHER_SUITE_CCMP;
2401         case WPA_ALG_GCMP:
2402                 return WLAN_CIPHER_SUITE_GCMP;
2403         case WPA_ALG_CCMP_256:
2404                 return WLAN_CIPHER_SUITE_CCMP_256;
2405         case WPA_ALG_GCMP_256:
2406                 return WLAN_CIPHER_SUITE_GCMP_256;
2407         case WPA_ALG_IGTK:
2408                 return WLAN_CIPHER_SUITE_AES_CMAC;
2409         case WPA_ALG_BIP_GMAC_128:
2410                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2411         case WPA_ALG_BIP_GMAC_256:
2412                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2413         case WPA_ALG_BIP_CMAC_256:
2414                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2415         case WPA_ALG_SMS4:
2416                 return WLAN_CIPHER_SUITE_SMS4;
2417         case WPA_ALG_KRK:
2418                 return WLAN_CIPHER_SUITE_KRK;
2419         case WPA_ALG_NONE:
2420         case WPA_ALG_PMK:
2421                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2422                            alg);
2423                 return 0;
2424         }
2425
2426         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2427                    alg);
2428         return 0;
2429 }
2430
2431
2432 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2433 {
2434         switch (cipher) {
2435         case WPA_CIPHER_CCMP_256:
2436                 return WLAN_CIPHER_SUITE_CCMP_256;
2437         case WPA_CIPHER_GCMP_256:
2438                 return WLAN_CIPHER_SUITE_GCMP_256;
2439         case WPA_CIPHER_CCMP:
2440                 return WLAN_CIPHER_SUITE_CCMP;
2441         case WPA_CIPHER_GCMP:
2442                 return WLAN_CIPHER_SUITE_GCMP;
2443         case WPA_CIPHER_TKIP:
2444                 return WLAN_CIPHER_SUITE_TKIP;
2445         case WPA_CIPHER_WEP104:
2446                 return WLAN_CIPHER_SUITE_WEP104;
2447         case WPA_CIPHER_WEP40:
2448                 return WLAN_CIPHER_SUITE_WEP40;
2449         case WPA_CIPHER_GTK_NOT_USED:
2450                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2451         }
2452
2453         return 0;
2454 }
2455
2456
2457 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2458                                        int max_suites)
2459 {
2460         int num_suites = 0;
2461
2462         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2463                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2464         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2465                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2466         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2467                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2468         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2469                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2470         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2471                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2472         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2473                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2474         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2475                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2476
2477         return num_suites;
2478 }
2479
2480
2481 #ifdef CONFIG_DRIVER_NL80211_QCA
2482 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2483                                   const u8 *key, size_t key_len)
2484 {
2485         struct nl_msg *msg;
2486         int ret;
2487
2488         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2489                 return 0;
2490
2491         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2492             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2493             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2494                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2495             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2496                 nl80211_nlmsg_clear(msg);
2497                 nlmsg_free(msg);
2498                 return -1;
2499         }
2500         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2501         if (ret) {
2502                 wpa_printf(MSG_DEBUG,
2503                            "nl80211: Key management set key failed: ret=%d (%s)",
2504                            ret, strerror(-ret));
2505         }
2506
2507         return ret;
2508 }
2509 #endif /* CONFIG_DRIVER_NL80211_QCA */
2510
2511
2512 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2513                                       enum wpa_alg alg, const u8 *addr,
2514                                       int key_idx, int set_tx,
2515                                       const u8 *seq, size_t seq_len,
2516                                       const u8 *key, size_t key_len)
2517 {
2518         struct wpa_driver_nl80211_data *drv = bss->drv;
2519         int ifindex;
2520         struct nl_msg *msg = NULL;
2521         int ret;
2522         int tdls = 0;
2523
2524         /* Ignore for P2P Device */
2525         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2526                 return 0;
2527
2528         ifindex = if_nametoindex(ifname);
2529         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2530                    "set_tx=%d seq_len=%lu key_len=%lu",
2531                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2532                    (unsigned long) seq_len, (unsigned long) key_len);
2533 #ifdef CONFIG_TDLS
2534         if (key_idx == -1) {
2535                 key_idx = 0;
2536                 tdls = 1;
2537         }
2538 #endif /* CONFIG_TDLS */
2539
2540 #ifdef CONFIG_DRIVER_NL80211_QCA
2541         if (alg == WPA_ALG_PMK &&
2542             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2543                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2544                            __func__);
2545                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2546                 return ret;
2547         }
2548 #endif /* CONFIG_DRIVER_NL80211_QCA */
2549
2550         if (alg == WPA_ALG_NONE) {
2551                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2552                 if (!msg)
2553                         return -ENOBUFS;
2554         } else {
2555                 u32 suite;
2556
2557                 suite = wpa_alg_to_cipher_suite(alg, key_len);
2558                 if (!suite)
2559                         goto fail;
2560                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2561                 if (!msg ||
2562                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2563                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER, suite))
2564                         goto fail;
2565                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2566         }
2567
2568         if (seq && seq_len) {
2569                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2570                         goto fail;
2571                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2572         }
2573
2574         if (addr && !is_broadcast_ether_addr(addr)) {
2575                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2576                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2577                         goto fail;
2578
2579                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2580                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2581                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2582                                         NL80211_KEYTYPE_GROUP))
2583                                 goto fail;
2584                 }
2585         } else if (addr && is_broadcast_ether_addr(addr)) {
2586                 struct nlattr *types;
2587
2588                 wpa_printf(MSG_DEBUG, "   broadcast key");
2589
2590                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2591                 if (!types ||
2592                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2593                         goto fail;
2594                 nla_nest_end(msg, types);
2595         }
2596         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2597                 goto fail;
2598
2599         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2600         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2601                 ret = 0;
2602         if (ret)
2603                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2604                            ret, strerror(-ret));
2605
2606         /*
2607          * If we failed or don't need to set the default TX key (below),
2608          * we're done here.
2609          */
2610         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2611                 return ret;
2612         if (is_ap_interface(drv->nlmode) && addr &&
2613             !is_broadcast_ether_addr(addr))
2614                 return ret;
2615
2616         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2617         if (!msg ||
2618             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2619             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2620                                alg == WPA_ALG_BIP_GMAC_128 ||
2621                                alg == WPA_ALG_BIP_GMAC_256 ||
2622                                alg == WPA_ALG_BIP_CMAC_256) ?
2623                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2624                          NL80211_ATTR_KEY_DEFAULT))
2625                 goto fail;
2626         if (addr && is_broadcast_ether_addr(addr)) {
2627                 struct nlattr *types;
2628
2629                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2630                 if (!types ||
2631                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2632                         goto fail;
2633                 nla_nest_end(msg, types);
2634         } else if (addr) {
2635                 struct nlattr *types;
2636
2637                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2638                 if (!types ||
2639                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2640                         goto fail;
2641                 nla_nest_end(msg, types);
2642         }
2643
2644         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2645         if (ret == -ENOENT)
2646                 ret = 0;
2647         if (ret)
2648                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2649                            "err=%d %s)", ret, strerror(-ret));
2650         return ret;
2651
2652 fail:
2653         nl80211_nlmsg_clear(msg);
2654         nlmsg_free(msg);
2655         return -ENOBUFS;
2656 }
2657
2658
2659 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2660                       int key_idx, int defkey,
2661                       const u8 *seq, size_t seq_len,
2662                       const u8 *key, size_t key_len)
2663 {
2664         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2665         u32 suite;
2666
2667         if (!key_attr)
2668                 return -1;
2669
2670         suite = wpa_alg_to_cipher_suite(alg, key_len);
2671         if (!suite)
2672                 return -1;
2673
2674         if (defkey && alg == WPA_ALG_IGTK) {
2675                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2676                         return -1;
2677         } else if (defkey) {
2678                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2679                         return -1;
2680         }
2681
2682         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2683             nla_put_u32(msg, NL80211_KEY_CIPHER, suite) ||
2684             (seq && seq_len &&
2685              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2686             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2687                 return -1;
2688
2689         nla_nest_end(msg, key_attr);
2690
2691         return 0;
2692 }
2693
2694
2695 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2696                                  struct nl_msg *msg)
2697 {
2698         int i, privacy = 0;
2699         struct nlattr *nl_keys, *nl_key;
2700
2701         for (i = 0; i < 4; i++) {
2702                 if (!params->wep_key[i])
2703                         continue;
2704                 privacy = 1;
2705                 break;
2706         }
2707         if (params->wps == WPS_MODE_PRIVACY)
2708                 privacy = 1;
2709         if (params->pairwise_suite &&
2710             params->pairwise_suite != WPA_CIPHER_NONE)
2711                 privacy = 1;
2712
2713         if (!privacy)
2714                 return 0;
2715
2716         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2717                 return -ENOBUFS;
2718
2719         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2720         if (!nl_keys)
2721                 return -ENOBUFS;
2722
2723         for (i = 0; i < 4; i++) {
2724                 if (!params->wep_key[i])
2725                         continue;
2726
2727                 nl_key = nla_nest_start(msg, i);
2728                 if (!nl_key ||
2729                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2730                             params->wep_key[i]) ||
2731                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2732                                 params->wep_key_len[i] == 5 ?
2733                                 WLAN_CIPHER_SUITE_WEP40 :
2734                                 WLAN_CIPHER_SUITE_WEP104) ||
2735                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2736                     (i == params->wep_tx_keyidx &&
2737                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2738                         return -ENOBUFS;
2739
2740                 nla_nest_end(msg, nl_key);
2741         }
2742         nla_nest_end(msg, nl_keys);
2743
2744         return 0;
2745 }
2746
2747
2748 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2749                             const u8 *addr, int cmd, u16 reason_code,
2750                             int local_state_change)
2751 {
2752         int ret;
2753         struct nl_msg *msg;
2754
2755         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2756             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2757             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2758             (local_state_change &&
2759              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2760                 nlmsg_free(msg);
2761                 return -1;
2762         }
2763
2764         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2765         if (ret) {
2766                 wpa_dbg(drv->ctx, MSG_DEBUG,
2767                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2768                         reason_code, ret, strerror(-ret));
2769         }
2770         return ret;
2771 }
2772
2773
2774 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2775                                          int reason_code)
2776 {
2777         int ret;
2778
2779         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2780         nl80211_mark_disconnected(drv);
2781         /* Disconnect command doesn't need BSSID - it uses cached value */
2782         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2783                                       reason_code, 0);
2784         /*
2785          * For locally generated disconnect, supplicant already generates a
2786          * DEAUTH event, so ignore the event from NL80211.
2787          */
2788         drv->ignore_next_local_disconnect = ret == 0;
2789
2790         return ret;
2791 }
2792
2793
2794 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2795                                              const u8 *addr, int reason_code)
2796 {
2797         struct wpa_driver_nl80211_data *drv = bss->drv;
2798         int ret;
2799
2800         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2801                 nl80211_mark_disconnected(drv);
2802                 return nl80211_leave_ibss(drv, 1);
2803         }
2804         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2805                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2806         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2807                    __func__, MAC2STR(addr), reason_code);
2808         nl80211_mark_disconnected(drv);
2809         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2810                                       reason_code, 0);
2811         /*
2812          * For locally generated deauthenticate, supplicant already generates a
2813          * DEAUTH event, so ignore the event from NL80211.
2814          */
2815         drv->ignore_next_local_deauth = ret == 0;
2816         return ret;
2817 }
2818
2819
2820 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2821                                      struct wpa_driver_auth_params *params)
2822 {
2823         int i;
2824
2825         drv->auth_freq = params->freq;
2826         drv->auth_alg = params->auth_alg;
2827         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2828         drv->auth_local_state_change = params->local_state_change;
2829         drv->auth_p2p = params->p2p;
2830
2831         if (params->bssid)
2832                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2833         else
2834                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2835
2836         if (params->ssid) {
2837                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2838                 drv->auth_ssid_len = params->ssid_len;
2839         } else
2840                 drv->auth_ssid_len = 0;
2841
2842
2843         os_free(drv->auth_ie);
2844         drv->auth_ie = NULL;
2845         drv->auth_ie_len = 0;
2846         if (params->ie) {
2847                 drv->auth_ie = os_malloc(params->ie_len);
2848                 if (drv->auth_ie) {
2849                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2850                         drv->auth_ie_len = params->ie_len;
2851                 }
2852         }
2853
2854         for (i = 0; i < 4; i++) {
2855                 if (params->wep_key[i] && params->wep_key_len[i] &&
2856                     params->wep_key_len[i] <= 16) {
2857                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2858                                   params->wep_key_len[i]);
2859                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2860                 } else
2861                         drv->auth_wep_key_len[i] = 0;
2862         }
2863 }
2864
2865
2866 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2867 {
2868         struct wpa_driver_nl80211_data *drv = bss->drv;
2869
2870         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2871                 return;
2872
2873         /*
2874          * Looks like we failed to unmask 11b rates previously. This could
2875          * happen, e.g., if the interface was down at the point in time when a
2876          * P2P group was terminated.
2877          */
2878         wpa_printf(MSG_DEBUG,
2879                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2880                    bss->ifname);
2881         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2882 }
2883
2884
2885 static int wpa_driver_nl80211_authenticate(
2886         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2887 {
2888         struct wpa_driver_nl80211_data *drv = bss->drv;
2889         int ret = -1, i;
2890         struct nl_msg *msg;
2891         enum nl80211_auth_type type;
2892         enum nl80211_iftype nlmode;
2893         int count = 0;
2894         int is_retry;
2895
2896         nl80211_unmask_11b_rates(bss);
2897
2898         is_retry = drv->retry_auth;
2899         drv->retry_auth = 0;
2900         drv->ignore_deauth_event = 0;
2901
2902         nl80211_mark_disconnected(drv);
2903         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2904         if (params->bssid)
2905                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2906         else
2907                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2908         /* FIX: IBSS mode */
2909         nlmode = params->p2p ?
2910                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2911         if (drv->nlmode != nlmode &&
2912             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2913                 return -1;
2914
2915 retry:
2916         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2917                    drv->ifindex);
2918
2919         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2920         if (!msg)
2921                 goto fail;
2922
2923         for (i = 0; i < 4; i++) {
2924                 if (!params->wep_key[i])
2925                         continue;
2926                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2927                                            NULL, i,
2928                                            i == params->wep_tx_keyidx, NULL, 0,
2929                                            params->wep_key[i],
2930                                            params->wep_key_len[i]);
2931                 if (params->wep_tx_keyidx != i)
2932                         continue;
2933                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2934                                params->wep_key[i], params->wep_key_len[i]))
2935                         goto fail;
2936         }
2937
2938         if (params->bssid) {
2939                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2940                            MAC2STR(params->bssid));
2941                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2942                         goto fail;
2943         }
2944         if (params->freq) {
2945                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2946                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2947                         goto fail;
2948         }
2949         if (params->ssid) {
2950                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2951                                   params->ssid, params->ssid_len);
2952                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2953                             params->ssid))
2954                         goto fail;
2955         }
2956         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2957         if (params->ie &&
2958             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2959                 goto fail;
2960         if (params->sae_data) {
2961                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2962                             params->sae_data_len);
2963                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2964                             params->sae_data))
2965                         goto fail;
2966         }
2967         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2968                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2969         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2970                 type = NL80211_AUTHTYPE_SHARED_KEY;
2971         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2972                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2973         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2974                 type = NL80211_AUTHTYPE_FT;
2975         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2976                 type = NL80211_AUTHTYPE_SAE;
2977         else
2978                 goto fail;
2979         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2980         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2981                 goto fail;
2982         if (params->local_state_change) {
2983                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2984                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2985                         goto fail;
2986         }
2987
2988         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2989         msg = NULL;
2990         if (ret) {
2991                 wpa_dbg(drv->ctx, MSG_DEBUG,
2992                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2993                         ret, strerror(-ret));
2994                 count++;
2995                 if (ret == -EALREADY && count == 1 && params->bssid &&
2996                     !params->local_state_change) {
2997                         /*
2998                          * mac80211 does not currently accept new
2999                          * authentication if we are already authenticated. As a
3000                          * workaround, force deauthentication and try again.
3001                          */
3002                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3003                                    "after forced deauthentication");
3004                         drv->ignore_deauth_event = 1;
3005                         wpa_driver_nl80211_deauthenticate(
3006                                 bss, params->bssid,
3007                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3008                         nlmsg_free(msg);
3009                         goto retry;
3010                 }
3011
3012                 if (ret == -ENOENT && params->freq && !is_retry) {
3013                         /*
3014                          * cfg80211 has likely expired the BSS entry even
3015                          * though it was previously available in our internal
3016                          * BSS table. To recover quickly, start a single
3017                          * channel scan on the specified channel.
3018                          */
3019                         struct wpa_driver_scan_params scan;
3020                         int freqs[2];
3021
3022                         os_memset(&scan, 0, sizeof(scan));
3023                         scan.num_ssids = 1;
3024                         if (params->ssid) {
3025                                 scan.ssids[0].ssid = params->ssid;
3026                                 scan.ssids[0].ssid_len = params->ssid_len;
3027                         }
3028                         freqs[0] = params->freq;
3029                         freqs[1] = 0;
3030                         scan.freqs = freqs;
3031                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3032                                    "channel scan to refresh cfg80211 BSS "
3033                                    "entry");
3034                         ret = wpa_driver_nl80211_scan(bss, &scan);
3035                         if (ret == 0) {
3036                                 nl80211_copy_auth_params(drv, params);
3037                                 drv->scan_for_auth = 1;
3038                         }
3039                 } else if (is_retry) {
3040                         /*
3041                          * Need to indicate this with an event since the return
3042                          * value from the retry is not delivered to core code.
3043                          */
3044                         union wpa_event_data event;
3045                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3046                                    "failed");
3047                         os_memset(&event, 0, sizeof(event));
3048                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3049                                   ETH_ALEN);
3050                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3051                                              &event);
3052                 }
3053         } else {
3054                 wpa_printf(MSG_DEBUG,
3055                            "nl80211: Authentication request send successfully");
3056         }
3057
3058 fail:
3059         nlmsg_free(msg);
3060         return ret;
3061 }
3062
3063
3064 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3065 {
3066         struct wpa_driver_auth_params params;
3067         struct i802_bss *bss = drv->first_bss;
3068         int i;
3069
3070         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3071
3072         os_memset(&params, 0, sizeof(params));
3073         params.freq = drv->auth_freq;
3074         params.auth_alg = drv->auth_alg;
3075         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3076         params.local_state_change = drv->auth_local_state_change;
3077         params.p2p = drv->auth_p2p;
3078
3079         if (!is_zero_ether_addr(drv->auth_bssid_))
3080                 params.bssid = drv->auth_bssid_;
3081
3082         if (drv->auth_ssid_len) {
3083                 params.ssid = drv->auth_ssid;
3084                 params.ssid_len = drv->auth_ssid_len;
3085         }
3086
3087         params.ie = drv->auth_ie;
3088         params.ie_len = drv->auth_ie_len;
3089
3090         for (i = 0; i < 4; i++) {
3091                 if (drv->auth_wep_key_len[i]) {
3092                         params.wep_key[i] = drv->auth_wep_key[i];
3093                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3094                 }
3095         }
3096
3097         drv->retry_auth = 1;
3098         return wpa_driver_nl80211_authenticate(bss, &params);
3099 }
3100
3101
3102 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3103                                          const void *data, size_t len,
3104                                          int encrypt, int noack,
3105                                          unsigned int freq, int no_cck,
3106                                          int offchanok, unsigned int wait_time,
3107                                          const u16 *csa_offs,
3108                                          size_t csa_offs_len)
3109 {
3110         struct wpa_driver_nl80211_data *drv = bss->drv;
3111         u64 cookie;
3112         int res;
3113
3114         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3115                 freq = nl80211_get_assoc_freq(drv);
3116                 wpa_printf(MSG_DEBUG,
3117                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3118                            freq);
3119         }
3120         if (freq == 0) {
3121                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3122                            bss->freq);
3123                 freq = bss->freq;
3124         }
3125
3126         if (drv->use_monitor) {
3127                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3128                            freq, bss->freq);
3129                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3130         }
3131
3132         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3133         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3134                                      &cookie, no_cck, noack, offchanok,
3135                                      csa_offs, csa_offs_len);
3136         if (res == 0 && !noack) {
3137                 const struct ieee80211_mgmt *mgmt;
3138                 u16 fc;
3139
3140                 mgmt = (const struct ieee80211_mgmt *) data;
3141                 fc = le_to_host16(mgmt->frame_control);
3142                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3143                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3144                         wpa_printf(MSG_MSGDUMP,
3145                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3146                                    (long long unsigned int)
3147                                    drv->send_action_cookie,
3148                                    (long long unsigned int) cookie);
3149                         drv->send_action_cookie = cookie;
3150                 }
3151         }
3152
3153         return res;
3154 }
3155
3156
3157 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3158                                         size_t data_len, int noack,
3159                                         unsigned int freq, int no_cck,
3160                                         int offchanok,
3161                                         unsigned int wait_time,
3162                                         const u16 *csa_offs,
3163                                         size_t csa_offs_len)
3164 {
3165         struct wpa_driver_nl80211_data *drv = bss->drv;
3166         struct ieee80211_mgmt *mgmt;
3167         int encrypt = 1;
3168         u16 fc;
3169
3170         mgmt = (struct ieee80211_mgmt *) data;
3171         fc = le_to_host16(mgmt->frame_control);
3172         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3173                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3174                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3175                    fc, fc2str(fc), drv->nlmode);
3176
3177         if ((is_sta_interface(drv->nlmode) ||
3178              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3179             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3180             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3181                 /*
3182                  * The use of last_mgmt_freq is a bit of a hack,
3183                  * but it works due to the single-threaded nature
3184                  * of wpa_supplicant.
3185                  */
3186                 if (freq == 0) {
3187                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3188                                    drv->last_mgmt_freq);
3189                         freq = drv->last_mgmt_freq;
3190                 }
3191                 return nl80211_send_frame_cmd(bss, freq, 0,
3192                                               data, data_len, NULL, 1, noack,
3193                                               1, csa_offs, csa_offs_len);
3194         }
3195
3196         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3197                 if (freq == 0) {
3198                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3199                                    bss->freq);
3200                         freq = bss->freq;
3201                 }
3202                 return nl80211_send_frame_cmd(bss, freq,
3203                                               (int) freq == bss->freq ? 0 :
3204                                               wait_time,
3205                                               data, data_len,
3206                                               &drv->send_action_cookie,
3207                                               no_cck, noack, offchanok,
3208                                               csa_offs, csa_offs_len);
3209         }
3210
3211         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3212             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3213                 /*
3214                  * Only one of the authentication frame types is encrypted.
3215                  * In order for static WEP encryption to work properly (i.e.,
3216                  * to not encrypt the frame), we need to tell mac80211 about
3217                  * the frames that must not be encrypted.
3218                  */
3219                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3220                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3221                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3222                         encrypt = 0;
3223         }
3224
3225         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3226         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3227                                              noack, freq, no_cck, offchanok,
3228                                              wait_time, csa_offs,
3229                                              csa_offs_len);
3230 }
3231
3232
3233 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3234 {
3235         u8 rates[NL80211_MAX_SUPP_RATES];
3236         u8 rates_len = 0;
3237         int i;
3238
3239         if (!basic_rates)
3240                 return 0;
3241
3242         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3243                 rates[rates_len++] = basic_rates[i] / 5;
3244
3245         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3246 }
3247
3248
3249 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3250                            int slot, int ht_opmode, int ap_isolate,
3251                            const int *basic_rates)
3252 {
3253         struct wpa_driver_nl80211_data *drv = bss->drv;
3254         struct nl_msg *msg;
3255
3256         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3257             (cts >= 0 &&
3258              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3259             (preamble >= 0 &&
3260              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3261             (slot >= 0 &&
3262              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3263             (ht_opmode >= 0 &&
3264              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3265             (ap_isolate >= 0 &&
3266              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3267             nl80211_put_basic_rates(msg, basic_rates)) {
3268                 nlmsg_free(msg);
3269                 return -ENOBUFS;
3270         }
3271
3272         return send_and_recv_msgs(drv, msg, NULL, NULL);
3273 }
3274
3275
3276 static int wpa_driver_nl80211_set_acl(void *priv,
3277                                       struct hostapd_acl_params *params)
3278 {
3279         struct i802_bss *bss = priv;
3280         struct wpa_driver_nl80211_data *drv = bss->drv;
3281         struct nl_msg *msg;
3282         struct nl_msg *acl;
3283         unsigned int i;
3284         int ret;
3285
3286         if (!(drv->capa.max_acl_mac_addrs))
3287                 return -ENOTSUP;
3288
3289         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3290                 return -ENOTSUP;
3291
3292         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3293                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3294
3295         acl = nlmsg_alloc();
3296         if (!acl)
3297                 return -ENOMEM;
3298         for (i = 0; i < params->num_mac_acl; i++) {
3299                 if (nla_put(acl, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3300                         nlmsg_free(acl);
3301                         return -ENOMEM;
3302                 }
3303         }
3304
3305         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3306             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3307                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3308                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3309             nla_put_nested(msg, NL80211_ATTR_MAC_ADDRS, acl)) {
3310                 nlmsg_free(msg);
3311                 nlmsg_free(acl);
3312                 return -ENOMEM;
3313         }
3314         nlmsg_free(acl);
3315
3316         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3317         if (ret) {
3318                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3319                            ret, strerror(-ret));
3320         }
3321
3322         return ret;
3323 }
3324
3325
3326 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3327 {
3328         if (beacon_int > 0) {
3329                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3330                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3331                                    beacon_int);
3332         }
3333
3334         return 0;
3335 }
3336
3337
3338 static int wpa_driver_nl80211_set_ap(void *priv,
3339                                      struct wpa_driver_ap_params *params)
3340 {
3341         struct i802_bss *bss = priv;
3342         struct wpa_driver_nl80211_data *drv = bss->drv;
3343         struct nl_msg *msg;
3344         u8 cmd = NL80211_CMD_NEW_BEACON;
3345         int ret;
3346         int beacon_set;
3347         int num_suites;
3348         int smps_mode;
3349         u32 suites[10], suite;
3350         u32 ver;
3351
3352         beacon_set = params->reenable ? 0 : bss->beacon_set;
3353
3354         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3355                    beacon_set);
3356         if (beacon_set)
3357                 cmd = NL80211_CMD_SET_BEACON;
3358
3359         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3360                     params->head, params->head_len);
3361         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3362                     params->tail, params->tail_len);
3363         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3364         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3365         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3366         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3367                           params->ssid, params->ssid_len);
3368         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3369             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3370                     params->head) ||
3371             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3372                     params->tail) ||
3373             nl80211_put_beacon_int(msg, params->beacon_int) ||
3374             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3375             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3376                 goto fail;
3377         if (params->proberesp && params->proberesp_len) {
3378                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3379                             params->proberesp, params->proberesp_len);
3380                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3381                             params->proberesp))
3382                         goto fail;
3383         }
3384         switch (params->hide_ssid) {
3385         case NO_SSID_HIDING:
3386                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3387                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3388                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3389                         goto fail;
3390                 break;
3391         case HIDDEN_SSID_ZERO_LEN:
3392                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3393                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3394                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3395                         goto fail;
3396                 break;
3397         case HIDDEN_SSID_ZERO_CONTENTS:
3398                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3399                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3400                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3401                         goto fail;
3402                 break;
3403         }
3404         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3405         if (params->privacy &&
3406             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3407                 goto fail;
3408         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3409         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3410             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3411                 /* Leave out the attribute */
3412         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3413                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3414                                 NL80211_AUTHTYPE_SHARED_KEY))
3415                         goto fail;
3416         } else {
3417                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3418                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3419                         goto fail;
3420         }
3421
3422         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3423         ver = 0;
3424         if (params->wpa_version & WPA_PROTO_WPA)
3425                 ver |= NL80211_WPA_VERSION_1;
3426         if (params->wpa_version & WPA_PROTO_RSN)
3427                 ver |= NL80211_WPA_VERSION_2;
3428         if (ver &&
3429             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3430                 goto fail;
3431
3432         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3433                    params->key_mgmt_suites);
3434         num_suites = 0;
3435         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3436                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3437         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3438                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3439         if (num_suites &&
3440             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3441                     suites))
3442                 goto fail;
3443
3444         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3445             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3446             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3447                 goto fail;
3448
3449         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3450                    params->pairwise_ciphers);
3451         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3452                                                  suites, ARRAY_SIZE(suites));
3453         if (num_suites &&
3454             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3455                     num_suites * sizeof(u32), suites))
3456                 goto fail;
3457
3458         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3459                    params->group_cipher);
3460         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3461         if (suite &&
3462             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3463                 goto fail;
3464
3465         switch (params->smps_mode) {
3466         case HT_CAP_INFO_SMPS_DYNAMIC:
3467                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3468                 smps_mode = NL80211_SMPS_DYNAMIC;
3469                 break;
3470         case HT_CAP_INFO_SMPS_STATIC:
3471                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3472                 smps_mode = NL80211_SMPS_STATIC;
3473                 break;
3474         default:
3475                 /* invalid - fallback to smps off */
3476         case HT_CAP_INFO_SMPS_DISABLED:
3477                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3478                 smps_mode = NL80211_SMPS_OFF;
3479                 break;
3480         }
3481         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3482                 goto fail;
3483
3484         if (params->beacon_ies) {
3485                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3486                                 params->beacon_ies);
3487                 if (nla_put(msg, NL80211_ATTR_IE,
3488                             wpabuf_len(params->beacon_ies),
3489                             wpabuf_head(params->beacon_ies)))
3490                         goto fail;
3491         }
3492         if (params->proberesp_ies) {
3493                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3494                                 params->proberesp_ies);
3495                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3496                             wpabuf_len(params->proberesp_ies),
3497                             wpabuf_head(params->proberesp_ies)))
3498                         goto fail;
3499         }
3500         if (params->assocresp_ies) {
3501                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3502                                 params->assocresp_ies);
3503                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3504                             wpabuf_len(params->assocresp_ies),
3505                             wpabuf_head(params->assocresp_ies)))
3506                         goto fail;
3507         }
3508
3509         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3510                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3511                            params->ap_max_inactivity);
3512                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3513                                 params->ap_max_inactivity))
3514                         goto fail;
3515         }
3516
3517 #ifdef CONFIG_P2P
3518         if (params->p2p_go_ctwindow > 0) {
3519                 if (drv->p2p_go_ctwindow_supported) {
3520                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3521                                    params->p2p_go_ctwindow);
3522                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3523                                        params->p2p_go_ctwindow))
3524                                 goto fail;
3525                 } else {
3526                         wpa_printf(MSG_INFO,
3527                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3528                 }
3529         }
3530 #endif /* CONFIG_P2P */
3531
3532         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3533         if (ret) {
3534                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3535                            ret, strerror(-ret));
3536         } else {
3537                 bss->beacon_set = 1;
3538                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3539                                 params->short_slot_time, params->ht_opmode,
3540                                 params->isolate, params->basic_rates);
3541                 if (beacon_set && params->freq &&
3542                     params->freq->bandwidth != bss->bandwidth) {
3543                         wpa_printf(MSG_DEBUG,
3544                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3545                                    bss->ifname, bss->bandwidth,
3546                                    params->freq->bandwidth);
3547                         ret = nl80211_set_channel(bss, params->freq, 1);
3548                         if (ret) {
3549                                 wpa_printf(MSG_DEBUG,
3550                                            "nl80211: Frequency set failed: %d (%s)",
3551                                            ret, strerror(-ret));
3552                         } else {
3553                                 wpa_printf(MSG_DEBUG,
3554                                            "nl80211: Frequency set succeeded for ht2040 coex");
3555                                 bss->bandwidth = params->freq->bandwidth;
3556                         }
3557                 } else if (!beacon_set) {
3558                         /*
3559                          * cfg80211 updates the driver on frequence change in AP
3560                          * mode only at the point when beaconing is started, so
3561                          * set the initial value here.
3562                          */
3563                         bss->bandwidth = params->freq->bandwidth;
3564                 }
3565         }
3566         return ret;
3567 fail:
3568         nlmsg_free(msg);
3569         return -ENOBUFS;
3570 }
3571
3572
3573 static int nl80211_put_freq_params(struct nl_msg *msg,
3574                                    const struct hostapd_freq_params *freq)
3575 {
3576         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3577         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3578                 return -ENOBUFS;
3579
3580         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3581         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3582
3583         if (freq->vht_enabled) {
3584                 enum nl80211_chan_width cw;
3585
3586                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3587                 switch (freq->bandwidth) {
3588                 case 20:
3589                         cw = NL80211_CHAN_WIDTH_20;
3590                         break;
3591                 case 40:
3592                         cw = NL80211_CHAN_WIDTH_40;
3593                         break;
3594                 case 80:
3595                         if (freq->center_freq2)
3596                                 cw = NL80211_CHAN_WIDTH_80P80;
3597                         else
3598                                 cw = NL80211_CHAN_WIDTH_80;
3599                         break;
3600                 case 160:
3601                         cw = NL80211_CHAN_WIDTH_160;
3602                         break;
3603                 default:
3604                         return -EINVAL;
3605                 }
3606
3607                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3608                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3609                            freq->center_freq1);
3610                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3611                            freq->center_freq2);
3612                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3613                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3614                                 freq->center_freq1) ||
3615                     (freq->center_freq2 &&
3616                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3617                                  freq->center_freq2)))
3618                         return -ENOBUFS;
3619         } else if (freq->ht_enabled) {
3620                 enum nl80211_channel_type ct;
3621
3622                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3623                            freq->sec_channel_offset);
3624                 switch (freq->sec_channel_offset) {
3625                 case -1:
3626                         ct = NL80211_CHAN_HT40MINUS;
3627                         break;
3628                 case 1:
3629                         ct = NL80211_CHAN_HT40PLUS;
3630                         break;
3631                 default:
3632                         ct = NL80211_CHAN_HT20;
3633                         break;
3634                 }
3635
3636                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3637                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3638                         return -ENOBUFS;
3639         }
3640         return 0;
3641 }
3642
3643
3644 static int nl80211_set_channel(struct i802_bss *bss,
3645                                struct hostapd_freq_params *freq, int set_chan)
3646 {
3647         struct wpa_driver_nl80211_data *drv = bss->drv;
3648         struct nl_msg *msg;
3649         int ret;
3650
3651         wpa_printf(MSG_DEBUG,
3652                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3653                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3654                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3655
3656         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3657                               NL80211_CMD_SET_WIPHY);
3658         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3659                 nlmsg_free(msg);
3660                 return -1;
3661         }
3662
3663         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3664         if (ret == 0) {
3665                 bss->freq = freq->freq;
3666                 return 0;
3667         }
3668         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3669                    "%d (%s)", freq->freq, ret, strerror(-ret));
3670         return -1;
3671 }
3672
3673
3674 static u32 sta_flags_nl80211(int flags)
3675 {
3676         u32 f = 0;
3677
3678         if (flags & WPA_STA_AUTHORIZED)
3679                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3680         if (flags & WPA_STA_WMM)
3681                 f |= BIT(NL80211_STA_FLAG_WME);
3682         if (flags & WPA_STA_SHORT_PREAMBLE)
3683                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3684         if (flags & WPA_STA_MFP)
3685                 f |= BIT(NL80211_STA_FLAG_MFP);
3686         if (flags & WPA_STA_TDLS_PEER)
3687                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3688         if (flags & WPA_STA_AUTHENTICATED)
3689                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3690
3691         return f;
3692 }
3693
3694
3695 #ifdef CONFIG_MESH
3696 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3697 {
3698         switch (state) {
3699         case PLINK_LISTEN:
3700                 return NL80211_PLINK_LISTEN;
3701         case PLINK_OPEN_SENT:
3702                 return NL80211_PLINK_OPN_SNT;
3703         case PLINK_OPEN_RCVD:
3704                 return NL80211_PLINK_OPN_RCVD;
3705         case PLINK_CNF_RCVD:
3706                 return NL80211_PLINK_CNF_RCVD;
3707         case PLINK_ESTAB:
3708                 return NL80211_PLINK_ESTAB;
3709         case PLINK_HOLDING:
3710                 return NL80211_PLINK_HOLDING;
3711         case PLINK_BLOCKED:
3712                 return NL80211_PLINK_BLOCKED;
3713         default:
3714                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3715                            state);
3716         }
3717         return -1;
3718 }
3719 #endif /* CONFIG_MESH */
3720
3721
3722 static int wpa_driver_nl80211_sta_add(void *priv,
3723                                       struct hostapd_sta_add_params *params)
3724 {
3725         struct i802_bss *bss = priv;
3726         struct wpa_driver_nl80211_data *drv = bss->drv;
3727         struct nl_msg *msg;
3728         struct nl80211_sta_flag_update upd;
3729         int ret = -ENOBUFS;
3730
3731         if ((params->flags & WPA_STA_TDLS_PEER) &&
3732             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3733                 return -EOPNOTSUPP;
3734
3735         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3736                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3737         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3738                               NL80211_CMD_NEW_STATION);
3739         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3740                 goto fail;
3741
3742         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3743                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3744                             params->supp_rates, params->supp_rates_len);
3745                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3746                            params->capability);
3747                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3748                             params->supp_rates_len, params->supp_rates) ||
3749                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3750                                 params->capability))
3751                         goto fail;
3752
3753                 if (params->ht_capabilities) {
3754                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3755                                     (u8 *) params->ht_capabilities,
3756                                     sizeof(*params->ht_capabilities));
3757                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3758                                     sizeof(*params->ht_capabilities),
3759                                     params->ht_capabilities))
3760                                 goto fail;
3761                 }
3762
3763                 if (params->vht_capabilities) {
3764                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3765                                     (u8 *) params->vht_capabilities,
3766                                     sizeof(*params->vht_capabilities));
3767                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3768                                     sizeof(*params->vht_capabilities),
3769                                     params->vht_capabilities))
3770                                 goto fail;
3771                 }
3772
3773                 if (params->ext_capab) {
3774                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3775                                     params->ext_capab, params->ext_capab_len);
3776                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3777                                     params->ext_capab_len, params->ext_capab))
3778                                 goto fail;
3779                 }
3780         }
3781         if (!params->set) {
3782                 if (params->aid) {
3783                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3784                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3785                                 goto fail;
3786                 } else {
3787                         /*
3788                          * cfg80211 validates that AID is non-zero, so we have
3789                          * to make this a non-zero value for the TDLS case where
3790                          * a dummy STA entry is used for now.
3791                          */
3792                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3793                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3794                                 goto fail;
3795                 }
3796                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3797                            params->listen_interval);
3798                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3799                                 params->listen_interval))
3800                         goto fail;
3801         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3802                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3803                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3804                         goto fail;
3805         }
3806
3807         if (params->vht_opmode_enabled) {
3808                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3809                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3810                                params->vht_opmode))
3811                         goto fail;
3812         }
3813
3814         if (params->supp_channels) {
3815                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3816                             params->supp_channels, params->supp_channels_len);
3817                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3818                             params->supp_channels_len, params->supp_channels))
3819                         goto fail;
3820         }
3821
3822         if (params->supp_oper_classes) {
3823                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3824                             params->supp_oper_classes,
3825                             params->supp_oper_classes_len);
3826                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3827                             params->supp_oper_classes_len,
3828                             params->supp_oper_classes))
3829                         goto fail;
3830         }
3831
3832         os_memset(&upd, 0, sizeof(upd));
3833         upd.set = sta_flags_nl80211(params->flags);
3834         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3835         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3836                    upd.set, upd.mask);
3837         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3838                 goto fail;
3839
3840 #ifdef CONFIG_MESH
3841         if (params->plink_state &&
3842             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3843                        sta_plink_state_nl80211(params->plink_state)))
3844                 goto fail;
3845 #endif /* CONFIG_MESH */
3846
3847         if (params->flags & WPA_STA_WMM) {
3848                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3849
3850                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3851                 if (!wme ||
3852                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3853                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3854                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3855                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3856                                WMM_QOSINFO_STA_SP_MASK))
3857                         goto fail;
3858                 nla_nest_end(msg, wme);
3859         }
3860
3861         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3862         msg = NULL;
3863         if (ret)
3864                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3865                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3866                            strerror(-ret));
3867         if (ret == -EEXIST)
3868                 ret = 0;
3869 fail:
3870         nlmsg_free(msg);
3871         return ret;
3872 }
3873
3874
3875 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3876 {
3877 #ifdef CONFIG_LIBNL3_ROUTE
3878         struct wpa_driver_nl80211_data *drv = bss->drv;
3879         struct rtnl_neigh *rn;
3880         struct nl_addr *nl_addr;
3881         int err;
3882
3883         rn = rtnl_neigh_alloc();
3884         if (!rn)
3885                 return;
3886
3887         rtnl_neigh_set_family(rn, AF_BRIDGE);
3888         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3889         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3890         if (!nl_addr) {
3891                 rtnl_neigh_put(rn);
3892                 return;
3893         }
3894         rtnl_neigh_set_lladdr(rn, nl_addr);
3895
3896         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3897         if (err < 0) {
3898                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3899                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3900                            bss->ifindex, nl_geterror(err));
3901         } else {
3902                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3903                            MACSTR, MAC2STR(addr));
3904         }
3905
3906         nl_addr_put(nl_addr);
3907         rtnl_neigh_put(rn);
3908 #endif /* CONFIG_LIBNL3_ROUTE */
3909 }
3910
3911
3912 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3913                                          int deauth, u16 reason_code)
3914 {
3915         struct wpa_driver_nl80211_data *drv = bss->drv;
3916         struct nl_msg *msg;
3917         int ret;
3918
3919         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3920             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3921             (deauth == 0 &&
3922              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3923                         WLAN_FC_STYPE_DISASSOC)) ||
3924             (deauth == 1 &&
3925              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3926                         WLAN_FC_STYPE_DEAUTH)) ||
3927             (reason_code &&
3928              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3929                 nlmsg_free(msg);
3930                 return -ENOBUFS;
3931         }
3932
3933         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3934         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3935                    " --> %d (%s)",
3936                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3937
3938         if (drv->rtnl_sk)
3939                 rtnl_neigh_delete_fdb_entry(bss, addr);
3940
3941         if (ret == -ENOENT)
3942                 return 0;
3943         return ret;
3944 }
3945
3946
3947 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3948 {
3949         struct nl_msg *msg;
3950         struct wpa_driver_nl80211_data *drv2;
3951
3952         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3953
3954         /* stop listening for EAPOL on this interface */
3955         dl_list_for_each(drv2, &drv->global->interfaces,
3956                          struct wpa_driver_nl80211_data, list)
3957                 del_ifidx(drv2, ifidx);
3958
3959         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3960         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3961                 return;
3962         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3963 }
3964
3965
3966 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3967 {
3968         switch (mode) {
3969         case NL80211_IFTYPE_ADHOC:
3970                 return "ADHOC";
3971         case NL80211_IFTYPE_STATION:
3972                 return "STATION";
3973         case NL80211_IFTYPE_AP:
3974                 return "AP";
3975         case NL80211_IFTYPE_AP_VLAN:
3976                 return "AP_VLAN";
3977         case NL80211_IFTYPE_WDS:
3978                 return "WDS";
3979         case NL80211_IFTYPE_MONITOR:
3980                 return "MONITOR";
3981         case NL80211_IFTYPE_MESH_POINT:
3982                 return "MESH_POINT";
3983         case NL80211_IFTYPE_P2P_CLIENT:
3984                 return "P2P_CLIENT";
3985         case NL80211_IFTYPE_P2P_GO:
3986                 return "P2P_GO";
3987         case NL80211_IFTYPE_P2P_DEVICE:
3988                 return "P2P_DEVICE";
3989         default:
3990                 return "unknown";
3991         }
3992 }
3993
3994
3995 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3996                                      const char *ifname,
3997                                      enum nl80211_iftype iftype,
3998                                      const u8 *addr, int wds,
3999                                      int (*handler)(struct nl_msg *, void *),
4000                                      void *arg)
4001 {
4002         struct nl_msg *msg;
4003         int ifidx;
4004         int ret = -ENOBUFS;
4005
4006         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4007                    iftype, nl80211_iftype_str(iftype));
4008
4009         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
4010         if (!msg ||
4011             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
4012             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
4013                 goto fail;
4014
4015         if (iftype == NL80211_IFTYPE_MONITOR) {
4016                 struct nlattr *flags;
4017
4018                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4019                 if (!flags ||
4020                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
4021                         goto fail;
4022
4023                 nla_nest_end(msg, flags);
4024         } else if (wds) {
4025                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4026                         goto fail;
4027         }
4028
4029         /*
4030          * Tell cfg80211 that the interface belongs to the socket that created
4031          * it, and the interface should be deleted when the socket is closed.
4032          */
4033         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4034                 goto fail;
4035
4036         ret = send_and_recv_msgs(drv, msg, handler, arg);
4037         msg = NULL;
4038         if (ret) {
4039         fail:
4040                 nlmsg_free(msg);
4041                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4042                            ifname, ret, strerror(-ret));
4043                 return ret;
4044         }
4045
4046         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4047                 return 0;
4048
4049         ifidx = if_nametoindex(ifname);
4050         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4051                    ifname, ifidx);
4052
4053         if (ifidx <= 0)
4054                 return -1;
4055
4056         /*
4057          * Some virtual interfaces need to process EAPOL packets and events on
4058          * the parent interface. This is used mainly with hostapd.
4059          */
4060         if (drv->hostapd ||
4061             iftype == NL80211_IFTYPE_AP_VLAN ||
4062             iftype == NL80211_IFTYPE_WDS ||
4063             iftype == NL80211_IFTYPE_MONITOR) {
4064                 /* start listening for EAPOL on this interface */
4065                 add_ifidx(drv, ifidx);
4066         }
4067
4068         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4069             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4070                 nl80211_remove_iface(drv, ifidx);
4071                 return -1;
4072         }
4073
4074         return ifidx;
4075 }
4076
4077
4078 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4079                          const char *ifname, enum nl80211_iftype iftype,
4080                          const u8 *addr, int wds,
4081                          int (*handler)(struct nl_msg *, void *),
4082                          void *arg, int use_existing)
4083 {
4084         int ret;
4085
4086         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4087                                         arg);
4088
4089         /* if error occurred and interface exists already */
4090         if (ret == -ENFILE && if_nametoindex(ifname)) {
4091                 if (use_existing) {
4092                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4093                                    ifname);
4094                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4095                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4096                                                addr) < 0 &&
4097                             (linux_set_iface_flags(drv->global->ioctl_sock,
4098                                                    ifname, 0) < 0 ||
4099                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4100                                                 addr) < 0 ||
4101                              linux_set_iface_flags(drv->global->ioctl_sock,
4102                                                    ifname, 1) < 0))
4103                                         return -1;
4104                         return -ENFILE;
4105                 }
4106                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4107
4108                 /* Try to remove the interface that was already there. */
4109                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4110
4111                 /* Try to create the interface again */
4112                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4113                                                 wds, handler, arg);
4114         }
4115
4116         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4117                 wpa_printf(MSG_DEBUG,
4118                            "nl80211: Interface %s created for P2P - disable 11b rates",
4119                            ifname);
4120                 nl80211_disable_11b_rates(drv, ret, 1);
4121         }
4122
4123         return ret;
4124 }
4125
4126
4127 static int nl80211_setup_ap(struct i802_bss *bss)
4128 {
4129         struct wpa_driver_nl80211_data *drv = bss->drv;
4130
4131         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4132                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4133
4134         /*
4135          * Disable Probe Request reporting unless we need it in this way for
4136          * devices that include the AP SME, in the other case (unless using
4137          * monitor iface) we'll get it through the nl_mgmt socket instead.
4138          */
4139         if (!drv->device_ap_sme)
4140                 wpa_driver_nl80211_probe_req_report(bss, 0);
4141
4142         if (!drv->device_ap_sme && !drv->use_monitor)
4143                 if (nl80211_mgmt_subscribe_ap(bss))
4144                         return -1;
4145
4146         if (drv->device_ap_sme && !drv->use_monitor)
4147                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4148                         return -1;
4149
4150         if (!drv->device_ap_sme && drv->use_monitor &&
4151             nl80211_create_monitor_interface(drv) &&
4152             !drv->device_ap_sme)
4153                 return -1;
4154
4155         if (drv->device_ap_sme &&
4156             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4157                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4158                            "Probe Request frame reporting in AP mode");
4159                 /* Try to survive without this */
4160         }
4161
4162         return 0;
4163 }
4164
4165
4166 static void nl80211_teardown_ap(struct i802_bss *bss)
4167 {
4168         struct wpa_driver_nl80211_data *drv = bss->drv;
4169
4170         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4171                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4172         if (drv->device_ap_sme) {
4173                 wpa_driver_nl80211_probe_req_report(bss, 0);
4174                 if (!drv->use_monitor)
4175                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4176         } else if (drv->use_monitor)
4177                 nl80211_remove_monitor_interface(drv);
4178         else
4179                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4180
4181         bss->beacon_set = 0;
4182 }
4183
4184
4185 static int nl80211_send_eapol_data(struct i802_bss *bss,
4186                                    const u8 *addr, const u8 *data,
4187                                    size_t data_len)
4188 {
4189         struct sockaddr_ll ll;
4190         int ret;
4191
4192         if (bss->drv->eapol_tx_sock < 0) {
4193                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4194                 return -1;
4195         }
4196
4197         os_memset(&ll, 0, sizeof(ll));
4198         ll.sll_family = AF_PACKET;
4199         ll.sll_ifindex = bss->ifindex;
4200         ll.sll_protocol = htons(ETH_P_PAE);
4201         ll.sll_halen = ETH_ALEN;
4202         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4203         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4204                      (struct sockaddr *) &ll, sizeof(ll));
4205         if (ret < 0)
4206                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4207                            strerror(errno));
4208
4209         return ret;
4210 }
4211
4212
4213 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4214
4215 static int wpa_driver_nl80211_hapd_send_eapol(
4216         void *priv, const u8 *addr, const u8 *data,
4217         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4218 {
4219         struct i802_bss *bss = priv;
4220         struct wpa_driver_nl80211_data *drv = bss->drv;
4221         struct ieee80211_hdr *hdr;
4222         size_t len;
4223         u8 *pos;
4224         int res;
4225         int qos = flags & WPA_STA_WMM;
4226
4227         if (drv->device_ap_sme || !drv->use_monitor)
4228                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4229
4230         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4231                 data_len;
4232         hdr = os_zalloc(len);
4233         if (hdr == NULL) {
4234                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4235                            (unsigned long) len);
4236                 return -1;
4237         }
4238
4239         hdr->frame_control =
4240                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4241         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4242         if (encrypt)
4243                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4244         if (qos) {
4245                 hdr->frame_control |=
4246                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4247         }
4248
4249         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4250         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4251         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4252         pos = (u8 *) (hdr + 1);
4253
4254         if (qos) {
4255                 /* Set highest priority in QoS header */
4256                 pos[0] = 7;
4257                 pos[1] = 0;
4258                 pos += 2;
4259         }
4260
4261         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4262         pos += sizeof(rfc1042_header);
4263         WPA_PUT_BE16(pos, ETH_P_PAE);
4264         pos += 2;
4265         memcpy(pos, data, data_len);
4266
4267         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4268                                             0, 0, 0, 0, NULL, 0);
4269         if (res < 0) {
4270                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4271                            "failed: %d (%s)",
4272                            (unsigned long) len, errno, strerror(errno));
4273         }
4274         os_free(hdr);
4275
4276         return res;
4277 }
4278
4279
4280 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4281                                             unsigned int total_flags,
4282                                             unsigned int flags_or,
4283                                             unsigned int flags_and)
4284 {
4285         struct i802_bss *bss = priv;
4286         struct nl_msg *msg;
4287         struct nlattr *flags;
4288         struct nl80211_sta_flag_update upd;
4289
4290         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4291                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4292                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4293                    !!(total_flags & WPA_STA_AUTHORIZED));
4294
4295         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4296             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4297                 goto fail;
4298
4299         /*
4300          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4301          * can be removed eventually.
4302          */
4303         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4304         if (!flags ||
4305             ((total_flags & WPA_STA_AUTHORIZED) &&
4306              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4307             ((total_flags & WPA_STA_WMM) &&
4308              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4309             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4310              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4311             ((total_flags & WPA_STA_MFP) &&
4312              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4313             ((total_flags & WPA_STA_TDLS_PEER) &&
4314              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4315                 goto fail;
4316
4317         nla_nest_end(msg, flags);
4318
4319         os_memset(&upd, 0, sizeof(upd));
4320         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4321         upd.set = sta_flags_nl80211(flags_or);
4322         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4323                 goto fail;
4324
4325         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4326 fail:
4327         nlmsg_free(msg);
4328         return -ENOBUFS;
4329 }
4330
4331
4332 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4333                                  struct wpa_driver_associate_params *params)
4334 {
4335         enum nl80211_iftype nlmode, old_mode;
4336
4337         if (params->p2p) {
4338                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4339                            "group (GO)");
4340                 nlmode = NL80211_IFTYPE_P2P_GO;
4341         } else
4342                 nlmode = NL80211_IFTYPE_AP;
4343
4344         old_mode = drv->nlmode;
4345         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4346                 nl80211_remove_monitor_interface(drv);
4347                 return -1;
4348         }
4349
4350         if (params->freq.freq &&
4351             nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4352                 if (old_mode != nlmode)
4353                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4354                 nl80211_remove_monitor_interface(drv);
4355                 return -1;
4356         }
4357
4358         return 0;
4359 }
4360
4361
4362 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4363                               int reset_mode)
4364 {
4365         struct nl_msg *msg;
4366         int ret;
4367
4368         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4369         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4370         if (ret) {
4371                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4372                            "(%s)", ret, strerror(-ret));
4373         } else {
4374                 wpa_printf(MSG_DEBUG,
4375                            "nl80211: Leave IBSS request sent successfully");
4376         }
4377
4378         if (reset_mode &&
4379             wpa_driver_nl80211_set_mode(drv->first_bss,
4380                                         NL80211_IFTYPE_STATION)) {
4381                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4382                            "station mode");
4383         }
4384
4385         return ret;
4386 }
4387
4388
4389 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4390                                     struct wpa_driver_associate_params *params)
4391 {
4392         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4393                 return -1;
4394
4395         if (params->htcaps && params->htcaps_mask) {
4396                 int sz = sizeof(struct ieee80211_ht_capabilities);
4397                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4398                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4399                             params->htcaps_mask, sz);
4400                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4401                             params->htcaps) ||
4402                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4403                             params->htcaps_mask))
4404                         return -1;
4405         }
4406
4407 #ifdef CONFIG_VHT_OVERRIDES
4408         if (params->disable_vht) {
4409                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4410                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4411                         return -1;
4412         }
4413
4414         if (params->vhtcaps && params->vhtcaps_mask) {
4415                 int sz = sizeof(struct ieee80211_vht_capabilities);
4416                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4417                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4418                             params->vhtcaps_mask, sz);
4419                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4420                             params->vhtcaps) ||
4421                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4422                             params->vhtcaps_mask))
4423                         return -1;
4424         }
4425 #endif /* CONFIG_VHT_OVERRIDES */
4426
4427         return 0;
4428 }
4429
4430
4431 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4432                                    struct wpa_driver_associate_params *params)
4433 {
4434         struct nl_msg *msg;
4435         int ret = -1;
4436         int count = 0;
4437
4438         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4439
4440         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4441                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4442                            "IBSS mode");
4443                 return -1;
4444         }
4445
4446 retry:
4447         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4448             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4449                 goto fail;
4450
4451         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4452                           params->ssid, params->ssid_len);
4453         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4454                 goto fail;
4455         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4456         drv->ssid_len = params->ssid_len;
4457
4458         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4459             nl80211_put_beacon_int(msg, params->beacon_int))
4460                 goto fail;
4461
4462         ret = nl80211_set_conn_keys(params, msg);
4463         if (ret)
4464                 goto fail;
4465
4466         if (params->bssid && params->fixed_bssid) {
4467                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4468                            MAC2STR(params->bssid));
4469                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4470                         goto fail;
4471         }
4472
4473         if (params->fixed_freq) {
4474                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4475                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4476                         goto fail;
4477         }
4478
4479         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4480             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4481             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4482             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4483                 wpa_printf(MSG_DEBUG, "  * control port");
4484                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4485                         goto fail;
4486         }
4487
4488         if (params->wpa_ie) {
4489                 wpa_hexdump(MSG_DEBUG,
4490                             "  * Extra IEs for Beacon/Probe Response frames",
4491                             params->wpa_ie, params->wpa_ie_len);
4492                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4493                             params->wpa_ie))
4494                         goto fail;
4495         }
4496
4497         if (nl80211_ht_vht_overrides(msg, params) < 0)
4498                 return -1;
4499
4500         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4501         msg = NULL;
4502         if (ret) {
4503                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4504                            ret, strerror(-ret));
4505                 count++;
4506                 if (ret == -EALREADY && count == 1) {
4507                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4508                                    "forced leave");
4509                         nl80211_leave_ibss(drv, 0);
4510                         nlmsg_free(msg);
4511                         goto retry;
4512                 }
4513         } else {
4514                 wpa_printf(MSG_DEBUG,
4515                            "nl80211: Join IBSS request sent successfully");
4516         }
4517
4518 fail:
4519         nlmsg_free(msg);
4520         return ret;
4521 }
4522
4523
4524 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4525                                   struct wpa_driver_associate_params *params,
4526                                   struct nl_msg *msg)
4527 {
4528         if (params->bssid) {
4529                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4530                            MAC2STR(params->bssid));
4531                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4532                         return -1;
4533         }
4534
4535         if (params->bssid_hint) {
4536                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4537                            MAC2STR(params->bssid_hint));
4538                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4539                             params->bssid_hint))
4540                         return -1;
4541         }
4542
4543         if (params->freq.freq) {
4544                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4545                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4546                                 params->freq.freq))
4547                         return -1;
4548                 drv->assoc_freq = params->freq.freq;
4549         } else
4550                 drv->assoc_freq = 0;
4551
4552         if (params->freq_hint) {
4553                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4554                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4555                                 params->freq_hint))
4556                         return -1;
4557         }
4558
4559         if (params->bg_scan_period >= 0) {
4560                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4561                            params->bg_scan_period);
4562                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4563                                 params->bg_scan_period))
4564                         return -1;
4565         }
4566
4567         if (params->ssid) {
4568                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4569                                   params->ssid, params->ssid_len);
4570                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4571                             params->ssid))
4572                         return -1;
4573                 if (params->ssid_len > sizeof(drv->ssid))
4574                         return -1;
4575                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4576                 drv->ssid_len = params->ssid_len;
4577         }
4578
4579         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4580         if (params->wpa_ie &&
4581             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4582                 return -1;
4583
4584         if (params->wpa_proto) {
4585                 enum nl80211_wpa_versions ver = 0;
4586
4587                 if (params->wpa_proto & WPA_PROTO_WPA)
4588                         ver |= NL80211_WPA_VERSION_1;
4589                 if (params->wpa_proto & WPA_PROTO_RSN)
4590                         ver |= NL80211_WPA_VERSION_2;
4591
4592                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4593                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4594                         return -1;
4595         }
4596
4597         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4598                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4599                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4600                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4601                                 cipher))
4602                         return -1;
4603         }
4604
4605         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4606             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4607                 /*
4608                  * This is likely to work even though many drivers do not
4609                  * advertise support for operations without GTK.
4610                  */
4611                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4612         } else if (params->group_suite != WPA_CIPHER_NONE) {
4613                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4614                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4615                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4616                         return -1;
4617         }
4618
4619         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4620             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4621             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4622             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4623             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4624             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4625             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4626             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4627             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4628             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4629                 int mgmt = WLAN_AKM_SUITE_PSK;
4630
4631                 switch (params->key_mgmt_suite) {
4632                 case WPA_KEY_MGMT_CCKM:
4633                         mgmt = WLAN_AKM_SUITE_CCKM;
4634                         break;
4635                 case WPA_KEY_MGMT_IEEE8021X:
4636                         mgmt = WLAN_AKM_SUITE_8021X;
4637                         break;
4638                 case WPA_KEY_MGMT_FT_IEEE8021X:
4639                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4640                         break;
4641                 case WPA_KEY_MGMT_FT_PSK:
4642                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4643                         break;
4644                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4645                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4646                         break;
4647                 case WPA_KEY_MGMT_PSK_SHA256:
4648                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4649                         break;
4650                 case WPA_KEY_MGMT_OSEN:
4651                         mgmt = WLAN_AKM_SUITE_OSEN;
4652                         break;
4653                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4654                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4655                         break;
4656                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4657                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4658                         break;
4659                 case WPA_KEY_MGMT_PSK:
4660                 default:
4661                         mgmt = WLAN_AKM_SUITE_PSK;
4662                         break;
4663                 }
4664                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4665                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4666                         return -1;
4667         }
4668
4669         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4670                 return -1;
4671
4672         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4673             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4674                 return -1;
4675
4676         if (params->rrm_used) {
4677                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4678                 if (!(drv_rrm_flags &
4679                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4680                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4681                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4682                         return -1;
4683         }
4684
4685         if (nl80211_ht_vht_overrides(msg, params) < 0)
4686                 return -1;
4687
4688         if (params->p2p)
4689                 wpa_printf(MSG_DEBUG, "  * P2P group");
4690
4691         return 0;
4692 }
4693
4694
4695 static int wpa_driver_nl80211_try_connect(
4696         struct wpa_driver_nl80211_data *drv,
4697         struct wpa_driver_associate_params *params)
4698 {
4699         struct nl_msg *msg;
4700         enum nl80211_auth_type type;
4701         int ret;
4702         int algs;
4703
4704 #ifdef CONFIG_DRIVER_NL80211_QCA
4705         if (params->req_key_mgmt_offload && params->psk &&
4706             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4707              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4708              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4709                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4710                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4711                 if (ret)
4712                         return ret;
4713         }
4714 #endif /* CONFIG_DRIVER_NL80211_QCA */
4715
4716         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4717         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4718         if (!msg)
4719                 return -1;
4720
4721         ret = nl80211_connect_common(drv, params, msg);
4722         if (ret)
4723                 goto fail;
4724
4725         algs = 0;
4726         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4727                 algs++;
4728         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4729                 algs++;
4730         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4731                 algs++;
4732         if (algs > 1) {
4733                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4734                            "selection");
4735                 goto skip_auth_type;
4736         }
4737
4738         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4739                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4740         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4741                 type = NL80211_AUTHTYPE_SHARED_KEY;
4742         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4743                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4744         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4745                 type = NL80211_AUTHTYPE_FT;
4746         else
4747                 goto fail;
4748
4749         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4750         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4751                 goto fail;
4752
4753 skip_auth_type:
4754         ret = nl80211_set_conn_keys(params, msg);
4755         if (ret)
4756                 goto fail;
4757
4758         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4759         msg = NULL;
4760         if (ret) {
4761                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4762                            "(%s)", ret, strerror(-ret));
4763         } else {
4764                 wpa_printf(MSG_DEBUG,
4765                            "nl80211: Connect request send successfully");
4766         }
4767
4768 fail:
4769         nlmsg_free(msg);
4770         return ret;
4771
4772 }
4773
4774
4775 static int wpa_driver_nl80211_connect(
4776         struct wpa_driver_nl80211_data *drv,
4777         struct wpa_driver_associate_params *params)
4778 {
4779         int ret;
4780
4781         /* Store the connection attempted bssid for future use */
4782         if (params->bssid)
4783                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4784         else
4785                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4786
4787         ret = wpa_driver_nl80211_try_connect(drv, params);
4788         if (ret == -EALREADY) {
4789                 /*
4790                  * cfg80211 does not currently accept new connections if
4791                  * we are already connected. As a workaround, force
4792                  * disconnection and try again.
4793                  */
4794                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4795                            "disconnecting before reassociation "
4796                            "attempt");
4797                 if (wpa_driver_nl80211_disconnect(
4798                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4799                         return -1;
4800                 ret = wpa_driver_nl80211_try_connect(drv, params);
4801         }
4802         return ret;
4803 }
4804
4805
4806 static int wpa_driver_nl80211_associate(
4807         void *priv, struct wpa_driver_associate_params *params)
4808 {
4809         struct i802_bss *bss = priv;
4810         struct wpa_driver_nl80211_data *drv = bss->drv;
4811         int ret = -1;
4812         struct nl_msg *msg;
4813
4814         nl80211_unmask_11b_rates(bss);
4815
4816         if (params->mode == IEEE80211_MODE_AP)
4817                 return wpa_driver_nl80211_ap(drv, params);
4818
4819         if (params->mode == IEEE80211_MODE_IBSS)
4820                 return wpa_driver_nl80211_ibss(drv, params);
4821
4822         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4823                 enum nl80211_iftype nlmode = params->p2p ?
4824                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4825
4826                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4827                         return -1;
4828                 return wpa_driver_nl80211_connect(drv, params);
4829         }
4830
4831         nl80211_mark_disconnected(drv);
4832
4833         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4834                    drv->ifindex);
4835         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4836         if (!msg)
4837                 return -1;
4838
4839         ret = nl80211_connect_common(drv, params, msg);
4840         if (ret)
4841                 goto fail;
4842
4843         if (params->prev_bssid) {
4844                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4845                            MAC2STR(params->prev_bssid));
4846                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4847                             params->prev_bssid))
4848                         goto fail;
4849         }
4850
4851         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4852         msg = NULL;
4853         if (ret) {
4854                 wpa_dbg(drv->ctx, MSG_DEBUG,
4855                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4856                         ret, strerror(-ret));
4857                 nl80211_dump_scan(drv);
4858         } else {
4859                 wpa_printf(MSG_DEBUG,
4860                            "nl80211: Association request send successfully");
4861         }
4862
4863 fail:
4864         nlmsg_free(msg);
4865         return ret;
4866 }
4867
4868
4869 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4870                             int ifindex, enum nl80211_iftype mode)
4871 {
4872         struct nl_msg *msg;
4873         int ret = -ENOBUFS;
4874
4875         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4876                    ifindex, mode, nl80211_iftype_str(mode));
4877
4878         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4879         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4880                 goto fail;
4881
4882         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4883         msg = NULL;
4884         if (!ret)
4885                 return 0;
4886 fail:
4887         nlmsg_free(msg);
4888         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4889                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4890         return ret;
4891 }
4892
4893
4894 static int wpa_driver_nl80211_set_mode_impl(
4895                 struct i802_bss *bss,
4896                 enum nl80211_iftype nlmode,
4897                 struct hostapd_freq_params *desired_freq_params)
4898 {
4899         struct wpa_driver_nl80211_data *drv = bss->drv;
4900         int ret = -1;
4901         int i;
4902         int was_ap = is_ap_interface(drv->nlmode);
4903         int res;
4904         int mode_switch_res;
4905
4906         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4907         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4908                 mode_switch_res = 0;
4909
4910         if (mode_switch_res == 0) {
4911                 drv->nlmode = nlmode;
4912                 ret = 0;
4913                 goto done;
4914         }
4915
4916         if (mode_switch_res == -ENODEV)
4917                 return -1;
4918
4919         if (nlmode == drv->nlmode) {
4920                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4921                            "requested mode - ignore error");
4922                 ret = 0;
4923                 goto done; /* Already in the requested mode */
4924         }
4925
4926         /* mac80211 doesn't allow mode changes while the device is up, so
4927          * take the device down, try to set the mode again, and bring the
4928          * device back up.
4929          */
4930         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4931                    "interface down");
4932         for (i = 0; i < 10; i++) {
4933                 res = i802_set_iface_flags(bss, 0);
4934                 if (res == -EACCES || res == -ENODEV)
4935                         break;
4936                 if (res != 0) {
4937                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4938                                    "interface down");
4939                         os_sleep(0, 100000);
4940                         continue;
4941                 }
4942
4943                 /*
4944                  * Setting the mode will fail for some drivers if the phy is
4945                  * on a frequency that the mode is disallowed in.
4946                  */
4947                 if (desired_freq_params) {
4948                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4949                         if (res) {
4950                                 wpa_printf(MSG_DEBUG,
4951                                            "nl80211: Failed to set frequency on interface");
4952                         }
4953                 }
4954
4955                 /* Try to set the mode again while the interface is down */
4956                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4957                 if (mode_switch_res == -EBUSY) {
4958                         wpa_printf(MSG_DEBUG,
4959                                    "nl80211: Delaying mode set while interface going down");
4960                         os_sleep(0, 100000);
4961                         continue;
4962                 }
4963                 ret = mode_switch_res;
4964                 break;
4965         }
4966
4967         if (!ret) {
4968                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4969                            "interface is down");
4970                 drv->nlmode = nlmode;
4971                 drv->ignore_if_down_event = 1;
4972         }
4973
4974         /* Bring the interface back up */
4975         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4976         if (res != 0) {
4977                 wpa_printf(MSG_DEBUG,
4978                            "nl80211: Failed to set interface up after switching mode");
4979                 ret = -1;
4980         }
4981
4982 done:
4983         if (ret) {
4984                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4985                            "from %d failed", nlmode, drv->nlmode);
4986                 return ret;
4987         }
4988
4989         if (is_p2p_net_interface(nlmode)) {
4990                 wpa_printf(MSG_DEBUG,
4991                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4992                            bss->ifname);
4993                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4994         } else if (drv->disabled_11b_rates) {
4995                 wpa_printf(MSG_DEBUG,
4996                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4997                            bss->ifname);
4998                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4999         }
5000
5001         if (is_ap_interface(nlmode)) {
5002                 nl80211_mgmt_unsubscribe(bss, "start AP");
5003                 /* Setup additional AP mode functionality if needed */
5004                 if (nl80211_setup_ap(bss))
5005                         return -1;
5006         } else if (was_ap) {
5007                 /* Remove additional AP mode functionality */
5008                 nl80211_teardown_ap(bss);
5009         } else {
5010                 nl80211_mgmt_unsubscribe(bss, "mode change");
5011         }
5012
5013         if (is_mesh_interface(nlmode) &&
5014             nl80211_mgmt_subscribe_mesh(bss))
5015                 return -1;
5016
5017         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5018             !is_mesh_interface(nlmode) &&
5019             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5020                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5021                            "frame processing - ignore for now");
5022
5023         return 0;
5024 }
5025
5026
5027 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5028                                 enum nl80211_iftype nlmode)
5029 {
5030         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5031 }
5032
5033
5034 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5035                                             struct hostapd_freq_params *freq)
5036 {
5037         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5038                                                 freq);
5039 }
5040
5041
5042 static int wpa_driver_nl80211_get_capa(void *priv,
5043                                        struct wpa_driver_capa *capa)
5044 {
5045         struct i802_bss *bss = priv;
5046         struct wpa_driver_nl80211_data *drv = bss->drv;
5047
5048         if (!drv->has_capability)
5049                 return -1;
5050         os_memcpy(capa, &drv->capa, sizeof(*capa));
5051         if (drv->extended_capa && drv->extended_capa_mask) {
5052                 capa->extended_capa = drv->extended_capa;
5053                 capa->extended_capa_mask = drv->extended_capa_mask;
5054                 capa->extended_capa_len = drv->extended_capa_len;
5055         }
5056
5057         return 0;
5058 }
5059
5060
5061 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5062 {
5063         struct i802_bss *bss = priv;
5064         struct wpa_driver_nl80211_data *drv = bss->drv;
5065
5066         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5067                    bss->ifname, drv->operstate, state,
5068                    state ? "UP" : "DORMANT");
5069         drv->operstate = state;
5070         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5071                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5072 }
5073
5074
5075 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5076 {
5077         struct i802_bss *bss = priv;
5078         struct wpa_driver_nl80211_data *drv = bss->drv;
5079         struct nl_msg *msg;
5080         struct nl80211_sta_flag_update upd;
5081         int ret;
5082
5083         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5084                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5085                 return 0;
5086         }
5087
5088         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5089                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5090
5091         os_memset(&upd, 0, sizeof(upd));
5092         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5093         if (authorized)
5094                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5095
5096         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5097             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5098             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5099                 nlmsg_free(msg);
5100                 return -ENOBUFS;
5101         }
5102
5103         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5104         if (!ret)
5105                 return 0;
5106         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5107                    ret, strerror(-ret));
5108         return ret;
5109 }
5110
5111
5112 /* Set kernel driver on given frequency (MHz) */
5113 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5114 {
5115         struct i802_bss *bss = priv;
5116         return nl80211_set_channel(bss, freq, 0);
5117 }
5118
5119
5120 static inline int min_int(int a, int b)
5121 {
5122         if (a < b)
5123                 return a;
5124         return b;
5125 }
5126
5127
5128 static int get_key_handler(struct nl_msg *msg, void *arg)
5129 {
5130         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5131         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5132
5133         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5134                   genlmsg_attrlen(gnlh, 0), NULL);
5135
5136         /*
5137          * TODO: validate the key index and mac address!
5138          * Otherwise, there's a race condition as soon as
5139          * the kernel starts sending key notifications.
5140          */
5141
5142         if (tb[NL80211_ATTR_KEY_SEQ])
5143                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5144                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5145         return NL_SKIP;
5146 }
5147
5148
5149 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5150                            int idx, u8 *seq)
5151 {
5152         struct i802_bss *bss = priv;
5153         struct wpa_driver_nl80211_data *drv = bss->drv;
5154         struct nl_msg *msg;
5155
5156         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5157                                   NL80211_CMD_GET_KEY);
5158         if (!msg ||
5159             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5160             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5161                 nlmsg_free(msg);
5162                 return -ENOBUFS;
5163         }
5164
5165         memset(seq, 0, 6);
5166
5167         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5168 }
5169
5170
5171 static int i802_set_rts(void *priv, int rts)
5172 {
5173         struct i802_bss *bss = priv;
5174         struct wpa_driver_nl80211_data *drv = bss->drv;
5175         struct nl_msg *msg;
5176         int ret;
5177         u32 val;
5178
5179         if (rts >= 2347)
5180                 val = (u32) -1;
5181         else
5182                 val = rts;
5183
5184         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5185             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5186                 nlmsg_free(msg);
5187                 return -ENOBUFS;
5188         }
5189
5190         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5191         if (!ret)
5192                 return 0;
5193         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5194                    "%d (%s)", rts, ret, strerror(-ret));
5195         return ret;
5196 }
5197
5198
5199 static int i802_set_frag(void *priv, int frag)
5200 {
5201         struct i802_bss *bss = priv;
5202         struct wpa_driver_nl80211_data *drv = bss->drv;
5203         struct nl_msg *msg;
5204         int ret;
5205         u32 val;
5206
5207         if (frag >= 2346)
5208                 val = (u32) -1;
5209         else
5210                 val = frag;
5211
5212         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5213             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5214                 nlmsg_free(msg);
5215                 return -ENOBUFS;
5216         }
5217
5218         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5219         if (!ret)
5220                 return 0;
5221         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5222                    "%d: %d (%s)", frag, ret, strerror(-ret));
5223         return ret;
5224 }
5225
5226
5227 static int i802_flush(void *priv)
5228 {
5229         struct i802_bss *bss = priv;
5230         struct nl_msg *msg;
5231         int res;
5232
5233         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5234                    bss->ifname);
5235
5236         /*
5237          * XXX: FIX! this needs to flush all VLANs too
5238          */
5239         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5240         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5241         if (res) {
5242                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5243                            "(%s)", res, strerror(-res));
5244         }
5245         return res;
5246 }
5247
5248
5249 static int get_sta_handler(struct nl_msg *msg, void *arg)
5250 {
5251         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5252         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5253         struct hostap_sta_driver_data *data = arg;
5254         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5255         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5256                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5257                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5258                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5259                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5260                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5261                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5262         };
5263
5264         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5265                   genlmsg_attrlen(gnlh, 0), NULL);
5266
5267         /*
5268          * TODO: validate the interface and mac address!
5269          * Otherwise, there's a race condition as soon as
5270          * the kernel starts sending station notifications.
5271          */
5272
5273         if (!tb[NL80211_ATTR_STA_INFO]) {
5274                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5275                 return NL_SKIP;
5276         }
5277         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5278                              tb[NL80211_ATTR_STA_INFO],
5279                              stats_policy)) {
5280                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5281                 return NL_SKIP;
5282         }
5283
5284         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5285                 data->inactive_msec =
5286                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5287         if (stats[NL80211_STA_INFO_RX_BYTES])
5288                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5289         if (stats[NL80211_STA_INFO_TX_BYTES])
5290                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5291         if (stats[NL80211_STA_INFO_RX_PACKETS])
5292                 data->rx_packets =
5293                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5294         if (stats[NL80211_STA_INFO_TX_PACKETS])
5295                 data->tx_packets =
5296                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5297         if (stats[NL80211_STA_INFO_TX_FAILED])
5298                 data->tx_retry_failed =
5299                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5300
5301         return NL_SKIP;
5302 }
5303
5304 static int i802_read_sta_data(struct i802_bss *bss,
5305                               struct hostap_sta_driver_data *data,
5306                               const u8 *addr)
5307 {
5308         struct nl_msg *msg;
5309
5310         os_memset(data, 0, sizeof(*data));
5311
5312         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5313             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5314                 nlmsg_free(msg);
5315                 return -ENOBUFS;
5316         }
5317
5318         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5319 }
5320
5321
5322 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5323                                     int cw_min, int cw_max, int burst_time)
5324 {
5325         struct i802_bss *bss = priv;
5326         struct wpa_driver_nl80211_data *drv = bss->drv;
5327         struct nl_msg *msg;
5328         struct nlattr *txq, *params;
5329
5330         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5331         if (!msg)
5332                 return -1;
5333
5334         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5335         if (!txq)
5336                 goto fail;
5337
5338         /* We are only sending parameters for a single TXQ at a time */
5339         params = nla_nest_start(msg, 1);
5340         if (!params)
5341                 goto fail;
5342
5343         switch (queue) {
5344         case 0:
5345                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5346                         goto fail;
5347                 break;
5348         case 1:
5349                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5350                         goto fail;
5351                 break;
5352         case 2:
5353                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5354                         goto fail;
5355                 break;
5356         case 3:
5357                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5358                         goto fail;
5359                 break;
5360         }
5361         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5362          * 32 usec, so need to convert the value here. */
5363         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5364                         (burst_time * 100 + 16) / 32) ||
5365             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5366             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5367             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5368                 goto fail;
5369
5370         nla_nest_end(msg, params);
5371
5372         nla_nest_end(msg, txq);
5373
5374         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5375                 return 0;
5376         msg = NULL;
5377 fail:
5378         nlmsg_free(msg);
5379         return -1;
5380 }
5381
5382
5383 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5384                              const char *ifname, int vlan_id)
5385 {
5386         struct wpa_driver_nl80211_data *drv = bss->drv;
5387         struct nl_msg *msg;
5388         int ret;
5389
5390         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5391                    ", ifname=%s[%d], vlan_id=%d)",
5392                    bss->ifname, if_nametoindex(bss->ifname),
5393                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5394         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5395             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5396             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5397                 nlmsg_free(msg);
5398                 return -ENOBUFS;
5399         }
5400
5401         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5402         if (ret < 0) {
5403                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5404                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5405                            MAC2STR(addr), ifname, vlan_id, ret,
5406                            strerror(-ret));
5407         }
5408         return ret;
5409 }
5410
5411
5412 static int i802_get_inact_sec(void *priv, const u8 *addr)
5413 {
5414         struct hostap_sta_driver_data data;
5415         int ret;
5416
5417         data.inactive_msec = (unsigned long) -1;
5418         ret = i802_read_sta_data(priv, &data, addr);
5419         if (ret == -ENOENT)
5420                 return -ENOENT;
5421         if (ret || data.inactive_msec == (unsigned long) -1)
5422                 return -1;
5423         return data.inactive_msec / 1000;
5424 }
5425
5426
5427 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5428 {
5429 #if 0
5430         /* TODO */
5431 #endif
5432         return 0;
5433 }
5434
5435
5436 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5437                            int reason)
5438 {
5439         struct i802_bss *bss = priv;
5440         struct wpa_driver_nl80211_data *drv = bss->drv;
5441         struct ieee80211_mgmt mgmt;
5442
5443         if (is_mesh_interface(drv->nlmode))
5444                 return -1;
5445
5446         if (drv->device_ap_sme)
5447                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5448
5449         memset(&mgmt, 0, sizeof(mgmt));
5450         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5451                                           WLAN_FC_STYPE_DEAUTH);
5452         memcpy(mgmt.da, addr, ETH_ALEN);
5453         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5454         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5455         mgmt.u.deauth.reason_code = host_to_le16(reason);
5456         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5457                                             IEEE80211_HDRLEN +
5458                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5459                                             0, NULL, 0);
5460 }
5461
5462
5463 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5464                              int reason)
5465 {
5466         struct i802_bss *bss = priv;
5467         struct wpa_driver_nl80211_data *drv = bss->drv;
5468         struct ieee80211_mgmt mgmt;
5469
5470         if (is_mesh_interface(drv->nlmode))
5471                 return -1;
5472
5473         if (drv->device_ap_sme)
5474                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5475
5476         memset(&mgmt, 0, sizeof(mgmt));
5477         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5478                                           WLAN_FC_STYPE_DISASSOC);
5479         memcpy(mgmt.da, addr, ETH_ALEN);
5480         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5481         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5482         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5483         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5484                                             IEEE80211_HDRLEN +
5485                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5486                                             0, NULL, 0);
5487 }
5488
5489
5490 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5491 {
5492         char buf[200], *pos, *end;
5493         int i, res;
5494
5495         pos = buf;
5496         end = pos + sizeof(buf);
5497
5498         for (i = 0; i < drv->num_if_indices; i++) {
5499                 if (!drv->if_indices[i])
5500                         continue;
5501                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5502                 if (os_snprintf_error(end - pos, res))
5503                         break;
5504                 pos += res;
5505         }
5506         *pos = '\0';
5507
5508         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5509                    drv->num_if_indices, buf);
5510 }
5511
5512
5513 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5514 {
5515         int i;
5516         int *old;
5517
5518         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5519                    ifidx);
5520         if (have_ifidx(drv, ifidx)) {
5521                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5522                            ifidx);
5523                 return;
5524         }
5525         for (i = 0; i < drv->num_if_indices; i++) {
5526                 if (drv->if_indices[i] == 0) {
5527                         drv->if_indices[i] = ifidx;
5528                         dump_ifidx(drv);
5529                         return;
5530                 }
5531         }
5532
5533         if (drv->if_indices != drv->default_if_indices)
5534                 old = drv->if_indices;
5535         else
5536                 old = NULL;
5537
5538         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5539                                            sizeof(int));
5540         if (!drv->if_indices) {
5541                 if (!old)
5542                         drv->if_indices = drv->default_if_indices;
5543                 else
5544                         drv->if_indices = old;
5545                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5546                            "interfaces");
5547                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5548                 return;
5549         } else if (!old)
5550                 os_memcpy(drv->if_indices, drv->default_if_indices,
5551                           sizeof(drv->default_if_indices));
5552         drv->if_indices[drv->num_if_indices] = ifidx;
5553         drv->num_if_indices++;
5554         dump_ifidx(drv);
5555 }
5556
5557
5558 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5559 {
5560         int i;
5561
5562         for (i = 0; i < drv->num_if_indices; i++) {
5563                 if (drv->if_indices[i] == ifidx) {
5564                         drv->if_indices[i] = 0;
5565                         break;
5566                 }
5567         }
5568         dump_ifidx(drv);
5569 }
5570
5571
5572 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5573 {
5574         int i;
5575
5576         for (i = 0; i < drv->num_if_indices; i++)
5577                 if (drv->if_indices[i] == ifidx)
5578                         return 1;
5579
5580         return 0;
5581 }
5582
5583
5584 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5585                             const char *bridge_ifname, char *ifname_wds)
5586 {
5587         struct i802_bss *bss = priv;
5588         struct wpa_driver_nl80211_data *drv = bss->drv;
5589         char name[IFNAMSIZ + 1];
5590
5591         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5592         if (ifname_wds)
5593                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5594
5595         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5596                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5597         if (val) {
5598                 if (!if_nametoindex(name)) {
5599                         if (nl80211_create_iface(drv, name,
5600                                                  NL80211_IFTYPE_AP_VLAN,
5601                                                  bss->addr, 1, NULL, NULL, 0) <
5602                             0)
5603                                 return -1;
5604                         if (bridge_ifname &&
5605                             linux_br_add_if(drv->global->ioctl_sock,
5606                                             bridge_ifname, name) < 0)
5607                                 return -1;
5608                 }
5609                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5610                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5611                                    "interface %s up", name);
5612                 }
5613                 return i802_set_sta_vlan(priv, addr, name, 0);
5614         } else {
5615                 if (bridge_ifname)
5616                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5617                                         name);
5618
5619                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5620                 nl80211_remove_iface(drv, if_nametoindex(name));
5621                 return 0;
5622         }
5623 }
5624
5625
5626 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5627 {
5628         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5629         struct sockaddr_ll lladdr;
5630         unsigned char buf[3000];
5631         int len;
5632         socklen_t fromlen = sizeof(lladdr);
5633
5634         len = recvfrom(sock, buf, sizeof(buf), 0,
5635                        (struct sockaddr *)&lladdr, &fromlen);
5636         if (len < 0) {
5637                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5638                            strerror(errno));
5639                 return;
5640         }
5641
5642         if (have_ifidx(drv, lladdr.sll_ifindex))
5643                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5644 }
5645
5646
5647 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5648                              struct i802_bss *bss,
5649                              const char *brname, const char *ifname)
5650 {
5651         int br_ifindex;
5652         char in_br[IFNAMSIZ];
5653
5654         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5655         br_ifindex = if_nametoindex(brname);
5656         if (br_ifindex == 0) {
5657                 /*
5658                  * Bridge was configured, but the bridge device does
5659                  * not exist. Try to add it now.
5660                  */
5661                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5662                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5663                                    "bridge interface %s: %s",
5664                                    brname, strerror(errno));
5665                         return -1;
5666                 }
5667                 bss->added_bridge = 1;
5668                 br_ifindex = if_nametoindex(brname);
5669                 add_ifidx(drv, br_ifindex);
5670         }
5671         bss->br_ifindex = br_ifindex;
5672
5673         if (linux_br_get(in_br, ifname) == 0) {
5674                 if (os_strcmp(in_br, brname) == 0)
5675                         return 0; /* already in the bridge */
5676
5677                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5678                            "bridge %s", ifname, in_br);
5679                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5680                     0) {
5681                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5682                                    "remove interface %s from bridge "
5683                                    "%s: %s",
5684                                    ifname, brname, strerror(errno));
5685                         return -1;
5686                 }
5687         }
5688
5689         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5690                    ifname, brname);
5691         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5692                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5693                            "into bridge %s: %s",
5694                            ifname, brname, strerror(errno));
5695                 return -1;
5696         }
5697         bss->added_if_into_bridge = 1;
5698
5699         return 0;
5700 }
5701
5702
5703 static void *i802_init(struct hostapd_data *hapd,
5704                        struct wpa_init_params *params)
5705 {
5706         struct wpa_driver_nl80211_data *drv;
5707         struct i802_bss *bss;
5708         size_t i;
5709         char master_ifname[IFNAMSIZ];
5710         int ifindex, br_ifindex = 0;
5711         int br_added = 0;
5712
5713         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5714                                           params->global_priv, 1,
5715                                           params->bssid, params->driver_params);
5716         if (bss == NULL)
5717                 return NULL;
5718
5719         drv = bss->drv;
5720
5721         if (linux_br_get(master_ifname, params->ifname) == 0) {
5722                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5723                            params->ifname, master_ifname);
5724                 br_ifindex = if_nametoindex(master_ifname);
5725                 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
5726         } else if ((params->num_bridge == 0 || !params->bridge[0]) &&
5727                    linux_master_get(master_ifname, params->ifname) == 0) {
5728                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in master %s",
5729                         params->ifname, master_ifname);
5730                 /* start listening for EAPOL on the master interface */
5731                 add_ifidx(drv, if_nametoindex(master_ifname));
5732         } else {
5733                 master_ifname[0] = '\0';
5734         }
5735
5736         bss->br_ifindex = br_ifindex;
5737
5738         for (i = 0; i < params->num_bridge; i++) {
5739                 if (params->bridge[i]) {
5740                         ifindex = if_nametoindex(params->bridge[i]);
5741                         if (ifindex)
5742                                 add_ifidx(drv, ifindex);
5743                         if (ifindex == br_ifindex)
5744                                 br_added = 1;
5745                 }
5746         }
5747
5748         /* start listening for EAPOL on the default AP interface */
5749         add_ifidx(drv, drv->ifindex);
5750
5751         if (params->num_bridge && params->bridge[0]) {
5752                 if (i802_check_bridge(drv, bss, params->bridge[0],
5753                                       params->ifname) < 0)
5754                         goto failed;
5755                 if (os_strcmp(params->bridge[0], master_ifname) != 0)
5756                         br_added = 1;
5757         }
5758
5759         if (!br_added && br_ifindex &&
5760             (params->num_bridge == 0 || !params->bridge[0]))
5761                 add_ifidx(drv, br_ifindex);
5762
5763 #ifdef CONFIG_LIBNL3_ROUTE
5764         if (bss->added_if_into_bridge) {
5765                 drv->rtnl_sk = nl_socket_alloc();
5766                 if (drv->rtnl_sk == NULL) {
5767                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5768                         goto failed;
5769                 }
5770
5771                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5772                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5773                                    strerror(errno));
5774                         goto failed;
5775                 }
5776         }
5777 #endif /* CONFIG_LIBNL3_ROUTE */
5778
5779         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5780         if (drv->eapol_sock < 0) {
5781                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5782                            strerror(errno));
5783                 goto failed;
5784         }
5785
5786         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5787         {
5788                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5789                 goto failed;
5790         }
5791
5792         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5793                                params->own_addr))
5794                 goto failed;
5795         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5796
5797         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5798
5799         return bss;
5800
5801 failed:
5802         wpa_driver_nl80211_deinit(bss);
5803         return NULL;
5804 }
5805
5806
5807 static void i802_deinit(void *priv)
5808 {
5809         struct i802_bss *bss = priv;
5810         wpa_driver_nl80211_deinit(bss);
5811 }
5812
5813
5814 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5815         enum wpa_driver_if_type type)
5816 {
5817         switch (type) {
5818         case WPA_IF_STATION:
5819                 return NL80211_IFTYPE_STATION;
5820         case WPA_IF_P2P_CLIENT:
5821         case WPA_IF_P2P_GROUP:
5822                 return NL80211_IFTYPE_P2P_CLIENT;
5823         case WPA_IF_AP_VLAN:
5824                 return NL80211_IFTYPE_AP_VLAN;
5825         case WPA_IF_AP_BSS:
5826                 return NL80211_IFTYPE_AP;
5827         case WPA_IF_P2P_GO:
5828                 return NL80211_IFTYPE_P2P_GO;
5829         case WPA_IF_P2P_DEVICE:
5830                 return NL80211_IFTYPE_P2P_DEVICE;
5831         case WPA_IF_MESH:
5832                 return NL80211_IFTYPE_MESH_POINT;
5833         default:
5834                 return -1;
5835         }
5836 }
5837
5838
5839 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5840 {
5841         struct wpa_driver_nl80211_data *drv;
5842         dl_list_for_each(drv, &global->interfaces,
5843                          struct wpa_driver_nl80211_data, list) {
5844                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5845                         return 1;
5846         }
5847         return 0;
5848 }
5849
5850
5851 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5852 {
5853         unsigned int idx;
5854
5855         if (!drv->global)
5856                 return -1;
5857
5858         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5859         for (idx = 0; idx < 64; idx++) {
5860                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5861                 new_addr[0] ^= idx << 2;
5862                 if (!nl80211_addr_in_use(drv->global, new_addr))
5863                         break;
5864         }
5865         if (idx == 64)
5866                 return -1;
5867
5868         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5869                    MACSTR, MAC2STR(new_addr));
5870
5871         return 0;
5872 }
5873
5874
5875 struct wdev_info {
5876         u64 wdev_id;
5877         int wdev_id_set;
5878         u8 macaddr[ETH_ALEN];
5879 };
5880
5881 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5882 {
5883         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5884         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5885         struct wdev_info *wi = arg;
5886
5887         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5888                   genlmsg_attrlen(gnlh, 0), NULL);
5889         if (tb[NL80211_ATTR_WDEV]) {
5890                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5891                 wi->wdev_id_set = 1;
5892         }
5893
5894         if (tb[NL80211_ATTR_MAC])
5895                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5896                           ETH_ALEN);
5897
5898         return NL_SKIP;
5899 }
5900
5901
5902 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5903                                      const char *ifname, const u8 *addr,
5904                                      void *bss_ctx, void **drv_priv,
5905                                      char *force_ifname, u8 *if_addr,
5906                                      const char *bridge, int use_existing,
5907                                      int setup_ap)
5908 {
5909         enum nl80211_iftype nlmode;
5910         struct i802_bss *bss = priv;
5911         struct wpa_driver_nl80211_data *drv = bss->drv;
5912         int ifidx;
5913         int added = 1;
5914
5915         if (addr)
5916                 os_memcpy(if_addr, addr, ETH_ALEN);
5917         nlmode = wpa_driver_nl80211_if_type(type);
5918         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5919                 struct wdev_info p2pdev_info;
5920
5921                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5922                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5923                                              0, nl80211_wdev_handler,
5924                                              &p2pdev_info, use_existing);
5925                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5926                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5927                                    ifname);
5928                         return -1;
5929                 }
5930
5931                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5932                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5933                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5934                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5935                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5936                            ifname,
5937                            (long long unsigned int) p2pdev_info.wdev_id);
5938         } else {
5939                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5940                                              0, NULL, NULL, use_existing);
5941                 if (use_existing && ifidx == -ENFILE) {
5942                         added = 0;
5943                         ifidx = if_nametoindex(ifname);
5944                 } else if (ifidx < 0) {
5945                         return -1;
5946                 }
5947         }
5948
5949         if (!addr) {
5950                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
5951                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5952                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5953                                             ifname, if_addr) < 0) {
5954                         if (added)
5955                                 nl80211_remove_iface(drv, ifidx);
5956                         return -1;
5957                 }
5958         }
5959
5960         if (!addr &&
5961             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5962              type == WPA_IF_P2P_GO || type == WPA_IF_MESH ||
5963              type == WPA_IF_STATION)) {
5964                 /* Enforce unique address */
5965                 u8 new_addr[ETH_ALEN];
5966
5967                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5968                                        new_addr) < 0) {
5969                         if (added)
5970                                 nl80211_remove_iface(drv, ifidx);
5971                         return -1;
5972                 }
5973                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5974                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5975                                    "for interface %s type %d", ifname, type);
5976                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5977                                 if (added)
5978                                         nl80211_remove_iface(drv, ifidx);
5979                                 return -1;
5980                         }
5981                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5982                                                new_addr) < 0) {
5983                                 if (added)
5984                                         nl80211_remove_iface(drv, ifidx);
5985                                 return -1;
5986                         }
5987                 }
5988                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5989         }
5990
5991         if (type == WPA_IF_AP_BSS && setup_ap) {
5992                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5993                 if (new_bss == NULL) {
5994                         if (added)
5995                                 nl80211_remove_iface(drv, ifidx);
5996                         return -1;
5997                 }
5998
5999                 if (bridge &&
6000                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6001                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6002                                    "interface %s to a bridge %s",
6003                                    ifname, bridge);
6004                         if (added)
6005                                 nl80211_remove_iface(drv, ifidx);
6006                         os_free(new_bss);
6007                         return -1;
6008                 }
6009
6010                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6011                 {
6012                         if (added)
6013                                 nl80211_remove_iface(drv, ifidx);
6014                         os_free(new_bss);
6015                         return -1;
6016                 }
6017                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6018                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6019                 new_bss->ifindex = ifidx;
6020                 new_bss->drv = drv;
6021                 new_bss->next = drv->first_bss->next;
6022                 new_bss->freq = drv->first_bss->freq;
6023                 new_bss->ctx = bss_ctx;
6024                 new_bss->added_if = added;
6025                 drv->first_bss->next = new_bss;
6026                 if (drv_priv)
6027                         *drv_priv = new_bss;
6028                 nl80211_init_bss(new_bss);
6029
6030                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6031                 if (nl80211_setup_ap(new_bss))
6032                         return -1;
6033         }
6034
6035         if (drv->global)
6036                 drv->global->if_add_ifindex = ifidx;
6037
6038         /*
6039          * Some virtual interfaces need to process EAPOL packets and events on
6040          * the parent interface. This is used mainly with hostapd.
6041          */
6042         if (ifidx > 0 &&
6043             (drv->hostapd ||
6044              nlmode == NL80211_IFTYPE_AP_VLAN ||
6045              nlmode == NL80211_IFTYPE_WDS ||
6046              nlmode == NL80211_IFTYPE_MONITOR))
6047                 add_ifidx(drv, ifidx);
6048
6049         return 0;
6050 }
6051
6052
6053 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6054                                         enum wpa_driver_if_type type,
6055                                         const char *ifname)
6056 {
6057         struct wpa_driver_nl80211_data *drv = bss->drv;
6058         int ifindex = if_nametoindex(ifname);
6059
6060         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6061                    __func__, type, ifname, ifindex, bss->added_if);
6062         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6063                 nl80211_remove_iface(drv, ifindex);
6064         else if (ifindex > 0 && !bss->added_if) {
6065                 struct wpa_driver_nl80211_data *drv2;
6066                 dl_list_for_each(drv2, &drv->global->interfaces,
6067                                  struct wpa_driver_nl80211_data, list)
6068                         del_ifidx(drv2, ifindex);
6069         }
6070
6071         if (type != WPA_IF_AP_BSS)
6072                 return 0;
6073
6074         if (bss->added_if_into_bridge) {
6075                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6076                                     bss->ifname) < 0)
6077                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6078                                    "interface %s from bridge %s: %s",
6079                                    bss->ifname, bss->brname, strerror(errno));
6080         }
6081         if (bss->added_bridge) {
6082                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6083                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6084                                    "bridge %s: %s",
6085                                    bss->brname, strerror(errno));
6086         }
6087
6088         if (bss != drv->first_bss) {
6089                 struct i802_bss *tbss;
6090
6091                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6092                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6093                         if (tbss->next == bss) {
6094                                 tbss->next = bss->next;
6095                                 /* Unsubscribe management frames */
6096                                 nl80211_teardown_ap(bss);
6097                                 nl80211_destroy_bss(bss);
6098                                 if (!bss->added_if)
6099                                         i802_set_iface_flags(bss, 0);
6100                                 os_free(bss);
6101                                 bss = NULL;
6102                                 break;
6103                         }
6104                 }
6105                 if (bss)
6106                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6107                                    "BSS %p in the list", __func__, bss);
6108         } else {
6109                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6110                 nl80211_teardown_ap(bss);
6111                 if (!bss->added_if && !drv->first_bss->next)
6112                         wpa_driver_nl80211_del_beacon(drv);
6113                 nl80211_destroy_bss(bss);
6114                 if (!bss->added_if)
6115                         i802_set_iface_flags(bss, 0);
6116                 if (drv->first_bss->next) {
6117                         drv->first_bss = drv->first_bss->next;
6118                         drv->ctx = drv->first_bss->ctx;
6119                         os_free(bss);
6120                 } else {
6121                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6122                 }
6123         }
6124
6125         return 0;
6126 }
6127
6128
6129 static int cookie_handler(struct nl_msg *msg, void *arg)
6130 {
6131         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6132         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6133         u64 *cookie = arg;
6134         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6135                   genlmsg_attrlen(gnlh, 0), NULL);
6136         if (tb[NL80211_ATTR_COOKIE])
6137                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6138         return NL_SKIP;
6139 }
6140
6141
6142 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6143                                   unsigned int freq, unsigned int wait,
6144                                   const u8 *buf, size_t buf_len,
6145                                   u64 *cookie_out, int no_cck, int no_ack,
6146                                   int offchanok, const u16 *csa_offs,
6147                                   size_t csa_offs_len)
6148 {
6149         struct wpa_driver_nl80211_data *drv = bss->drv;
6150         struct nl_msg *msg;
6151         u64 cookie;
6152         int ret = -1;
6153
6154         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6155                    "no_ack=%d offchanok=%d",
6156                    freq, wait, no_cck, no_ack, offchanok);
6157         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6158
6159         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6160             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6161             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6162             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6163                            drv->test_use_roc_tx) &&
6164              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6165             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6166             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6167             (csa_offs && nla_put(msg, NL80211_ATTR_CSA_C_OFFSETS_TX,
6168                                  csa_offs_len * sizeof(u16), csa_offs)) ||
6169             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6170                 goto fail;
6171
6172         cookie = 0;
6173         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6174         msg = NULL;
6175         if (ret) {
6176                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6177                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6178                            freq, wait);
6179         } else {
6180                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6181                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6182                            (long long unsigned int) cookie);
6183
6184                 if (cookie_out)
6185                         *cookie_out = no_ack ? (u64) -1 : cookie;
6186         }
6187
6188 fail:
6189         nlmsg_free(msg);
6190         return ret;
6191 }
6192
6193
6194 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6195                                           unsigned int freq,
6196                                           unsigned int wait_time,
6197                                           const u8 *dst, const u8 *src,
6198                                           const u8 *bssid,
6199                                           const u8 *data, size_t data_len,
6200                                           int no_cck)
6201 {
6202         struct wpa_driver_nl80211_data *drv = bss->drv;
6203         int ret = -1;
6204         u8 *buf;
6205         struct ieee80211_hdr *hdr;
6206
6207         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6208                    "freq=%u MHz wait=%d ms no_cck=%d)",
6209                    drv->ifindex, freq, wait_time, no_cck);
6210
6211         buf = os_zalloc(24 + data_len);
6212         if (buf == NULL)
6213                 return ret;
6214         os_memcpy(buf + 24, data, data_len);
6215         hdr = (struct ieee80211_hdr *) buf;
6216         hdr->frame_control =
6217                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6218         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6219         os_memcpy(hdr->addr2, src, ETH_ALEN);
6220         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6221
6222         if (is_ap_interface(drv->nlmode) &&
6223             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6224              (int) freq == bss->freq || drv->device_ap_sme ||
6225              !drv->use_monitor))
6226                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6227                                                    0, freq, no_cck, 1,
6228                                                    wait_time, NULL, 0);
6229         else
6230                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6231                                              24 + data_len,
6232                                              &drv->send_action_cookie,
6233                                              no_cck, 0, 1, NULL, 0);
6234
6235         os_free(buf);
6236         return ret;
6237 }
6238
6239
6240 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6241 {
6242         struct i802_bss *bss = priv;
6243         struct wpa_driver_nl80211_data *drv = bss->drv;
6244         struct nl_msg *msg;
6245         int ret;
6246
6247         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6248                    (long long unsigned int) drv->send_action_cookie);
6249         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6250             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6251                 nlmsg_free(msg);
6252                 return;
6253         }
6254
6255         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6256         if (ret)
6257                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6258                            "(%s)", ret, strerror(-ret));
6259 }
6260
6261
6262 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6263                                                 unsigned int duration)
6264 {
6265         struct i802_bss *bss = priv;
6266         struct wpa_driver_nl80211_data *drv = bss->drv;
6267         struct nl_msg *msg;
6268         int ret;
6269         u64 cookie;
6270
6271         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6272             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6273             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6274                 nlmsg_free(msg);
6275                 return -1;
6276         }
6277
6278         cookie = 0;
6279         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6280         if (ret == 0) {
6281                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6282                            "0x%llx for freq=%u MHz duration=%u",
6283                            (long long unsigned int) cookie, freq, duration);
6284                 drv->remain_on_chan_cookie = cookie;
6285                 drv->pending_remain_on_chan = 1;
6286                 return 0;
6287         }
6288         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6289                    "(freq=%d duration=%u): %d (%s)",
6290                    freq, duration, ret, strerror(-ret));
6291         return -1;
6292 }
6293
6294
6295 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6296 {
6297         struct i802_bss *bss = priv;
6298         struct wpa_driver_nl80211_data *drv = bss->drv;
6299         struct nl_msg *msg;
6300         int ret;
6301
6302         if (!drv->pending_remain_on_chan) {
6303                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6304                            "to cancel");
6305                 return -1;
6306         }
6307
6308         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6309                    "0x%llx",
6310                    (long long unsigned int) drv->remain_on_chan_cookie);
6311
6312         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6313         if (!msg ||
6314             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6315                 nlmsg_free(msg);
6316                 return -1;
6317         }
6318
6319         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6320         if (ret == 0)
6321                 return 0;
6322         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6323                    "%d (%s)", ret, strerror(-ret));
6324         return -1;
6325 }
6326
6327
6328 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6329 {
6330         struct wpa_driver_nl80211_data *drv = bss->drv;
6331
6332         if (!report) {
6333                 if (bss->nl_preq && drv->device_ap_sme &&
6334                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6335                     !bss->static_ap) {
6336                         /*
6337                          * Do not disable Probe Request reporting that was
6338                          * enabled in nl80211_setup_ap().
6339                          */
6340                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6341                                    "Probe Request reporting nl_preq=%p while "
6342                                    "in AP mode", bss->nl_preq);
6343                 } else if (bss->nl_preq) {
6344                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6345                                    "reporting nl_preq=%p", bss->nl_preq);
6346                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6347                 }
6348                 return 0;
6349         }
6350
6351         if (bss->nl_preq) {
6352                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6353                            "already on! nl_preq=%p", bss->nl_preq);
6354                 return 0;
6355         }
6356
6357         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6358         if (bss->nl_preq == NULL)
6359                 return -1;
6360         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6361                    "reporting nl_preq=%p", bss->nl_preq);
6362
6363         if (nl80211_register_frame(bss, bss->nl_preq,
6364                                    (WLAN_FC_TYPE_MGMT << 2) |
6365                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6366                                    NULL, 0) < 0)
6367                 goto out_err;
6368
6369         nl80211_register_eloop_read(&bss->nl_preq,
6370                                     wpa_driver_nl80211_event_receive,
6371                                     bss->nl_cb);
6372
6373         return 0;
6374
6375  out_err:
6376         nl_destroy_handles(&bss->nl_preq);
6377         return -1;
6378 }
6379
6380
6381 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6382                                      int ifindex, int disabled)
6383 {
6384         struct nl_msg *msg;
6385         struct nlattr *bands, *band;
6386         int ret;
6387
6388         wpa_printf(MSG_DEBUG,
6389                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6390                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6391                    "no NL80211_TXRATE_LEGACY constraint");
6392
6393         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6394                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6395         if (!msg)
6396                 return -1;
6397
6398         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6399         if (!bands)
6400                 goto fail;
6401
6402         /*
6403          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6404          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6405          * rates. All 5 GHz rates are left enabled.
6406          */
6407         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6408         if (!band ||
6409             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6410                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6411                 goto fail;
6412         nla_nest_end(msg, band);
6413
6414         nla_nest_end(msg, bands);
6415
6416         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6417         if (ret) {
6418                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6419                            "(%s)", ret, strerror(-ret));
6420         } else
6421                 drv->disabled_11b_rates = disabled;
6422
6423         return ret;
6424
6425 fail:
6426         nlmsg_free(msg);
6427         return -1;
6428 }
6429
6430
6431 static int wpa_driver_nl80211_deinit_ap(void *priv)
6432 {
6433         struct i802_bss *bss = priv;
6434         struct wpa_driver_nl80211_data *drv = bss->drv;
6435         if (!is_ap_interface(drv->nlmode))
6436                 return -1;
6437         wpa_driver_nl80211_del_beacon(drv);
6438         bss->beacon_set = 0;
6439
6440         /*
6441          * If the P2P GO interface was dynamically added, then it is
6442          * possible that the interface change to station is not possible.
6443          */
6444         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6445                 return 0;
6446
6447         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6448 }
6449
6450
6451 static int wpa_driver_nl80211_stop_ap(void *priv)
6452 {
6453         struct i802_bss *bss = priv;
6454         struct wpa_driver_nl80211_data *drv = bss->drv;
6455         if (!is_ap_interface(drv->nlmode))
6456                 return -1;
6457         wpa_driver_nl80211_del_beacon(drv);
6458         bss->beacon_set = 0;
6459         return 0;
6460 }
6461
6462
6463 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6464 {
6465         struct i802_bss *bss = priv;
6466         struct wpa_driver_nl80211_data *drv = bss->drv;
6467         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6468                 return -1;
6469
6470         /*
6471          * If the P2P Client interface was dynamically added, then it is
6472          * possible that the interface change to station is not possible.
6473          */
6474         if (bss->if_dynamic)
6475                 return 0;
6476
6477         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6478 }
6479
6480
6481 static void wpa_driver_nl80211_resume(void *priv)
6482 {
6483         struct i802_bss *bss = priv;
6484         enum nl80211_iftype nlmode = nl80211_get_ifmode(bss);
6485
6486         if (i802_set_iface_flags(bss, 1))
6487                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6488
6489         if (is_p2p_net_interface(nlmode))
6490                 nl80211_disable_11b_rates(bss->drv, bss->drv->ifindex, 1);
6491 }
6492
6493
6494 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6495 {
6496         struct i802_bss *bss = priv;
6497         struct wpa_driver_nl80211_data *drv = bss->drv;
6498         struct nl_msg *msg;
6499         struct nlattr *cqm;
6500
6501         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6502                    "hysteresis=%d", threshold, hysteresis);
6503
6504         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6505             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6506             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6507             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6508                 nlmsg_free(msg);
6509                 return -1;
6510         }
6511         nla_nest_end(msg, cqm);
6512
6513         return send_and_recv_msgs(drv, msg, NULL, NULL);
6514 }
6515
6516
6517 static int get_channel_width(struct nl_msg *msg, void *arg)
6518 {
6519         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6520         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6521         struct wpa_signal_info *sig_change = arg;
6522
6523         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6524                   genlmsg_attrlen(gnlh, 0), NULL);
6525
6526         sig_change->center_frq1 = -1;
6527         sig_change->center_frq2 = -1;
6528         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6529
6530         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6531                 sig_change->chanwidth = convert2width(
6532                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6533                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6534                         sig_change->center_frq1 =
6535                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6536                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6537                         sig_change->center_frq2 =
6538                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6539         }
6540
6541         return NL_SKIP;
6542 }
6543
6544
6545 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6546                                      struct wpa_signal_info *sig)
6547 {
6548         struct nl_msg *msg;
6549
6550         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6551         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6552 }
6553
6554
6555 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6556 {
6557         struct i802_bss *bss = priv;
6558         struct wpa_driver_nl80211_data *drv = bss->drv;
6559         int res;
6560
6561         os_memset(si, 0, sizeof(*si));
6562         res = nl80211_get_link_signal(drv, si);
6563         if (res) {
6564                 if (drv->nlmode != NL80211_IFTYPE_ADHOC &&
6565                     drv->nlmode != NL80211_IFTYPE_MESH_POINT)
6566                         return res;
6567                 si->current_signal = 0;
6568         }
6569
6570         res = nl80211_get_channel_width(drv, si);
6571         if (res != 0)
6572                 return res;
6573
6574         return nl80211_get_link_noise(drv, si);
6575 }
6576
6577
6578 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6579                               int encrypt)
6580 {
6581         struct i802_bss *bss = priv;
6582         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6583                                              0, 0, 0, 0, NULL, 0);
6584 }
6585
6586
6587 static int nl80211_set_param(void *priv, const char *param)
6588 {
6589         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6590         if (param == NULL)
6591                 return 0;
6592
6593 #ifdef CONFIG_P2P
6594         if (os_strstr(param, "use_p2p_group_interface=1")) {
6595                 struct i802_bss *bss = priv;
6596                 struct wpa_driver_nl80211_data *drv = bss->drv;
6597
6598                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6599                            "interface");
6600                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6601                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6602         }
6603 #endif /* CONFIG_P2P */
6604
6605         if (os_strstr(param, "use_monitor=1")) {
6606                 struct i802_bss *bss = priv;
6607                 struct wpa_driver_nl80211_data *drv = bss->drv;
6608                 drv->use_monitor = 1;
6609         }
6610
6611         if (os_strstr(param, "force_connect_cmd=1")) {
6612                 struct i802_bss *bss = priv;
6613                 struct wpa_driver_nl80211_data *drv = bss->drv;
6614                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6615                 drv->force_connect_cmd = 1;
6616         }
6617
6618         if (os_strstr(param, "no_offchannel_tx=1")) {
6619                 struct i802_bss *bss = priv;
6620                 struct wpa_driver_nl80211_data *drv = bss->drv;
6621                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6622                 drv->test_use_roc_tx = 1;
6623         }
6624
6625         return 0;
6626 }
6627
6628
6629 static void * nl80211_global_init(void)
6630 {
6631         struct nl80211_global *global;
6632         struct netlink_config *cfg;
6633
6634         global = os_zalloc(sizeof(*global));
6635         if (global == NULL)
6636                 return NULL;
6637         global->ioctl_sock = -1;
6638         dl_list_init(&global->interfaces);
6639         global->if_add_ifindex = -1;
6640
6641         cfg = os_zalloc(sizeof(*cfg));
6642         if (cfg == NULL)
6643                 goto err;
6644
6645         cfg->ctx = global;
6646         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6647         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6648         global->netlink = netlink_init(cfg);
6649         if (global->netlink == NULL) {
6650                 os_free(cfg);
6651                 goto err;
6652         }
6653
6654         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6655                 goto err;
6656
6657         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6658         if (global->ioctl_sock < 0) {
6659                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6660                            strerror(errno));
6661                 goto err;
6662         }
6663
6664         return global;
6665
6666 err:
6667         nl80211_global_deinit(global);
6668         return NULL;
6669 }
6670
6671
6672 static void nl80211_global_deinit(void *priv)
6673 {
6674         struct nl80211_global *global = priv;
6675         if (global == NULL)
6676                 return;
6677         if (!dl_list_empty(&global->interfaces)) {
6678                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6679                            "nl80211_global_deinit",
6680                            dl_list_len(&global->interfaces));
6681         }
6682
6683         if (global->netlink)
6684                 netlink_deinit(global->netlink);
6685
6686         nl_destroy_handles(&global->nl);
6687
6688         if (global->nl_event)
6689                 nl80211_destroy_eloop_handle(&global->nl_event);
6690
6691         nl_cb_put(global->nl_cb);
6692
6693         if (global->ioctl_sock >= 0)
6694                 close(global->ioctl_sock);
6695
6696         os_free(global);
6697 }
6698
6699
6700 static const char * nl80211_get_radio_name(void *priv)
6701 {
6702         struct i802_bss *bss = priv;
6703         struct wpa_driver_nl80211_data *drv = bss->drv;
6704         return drv->phyname;
6705 }
6706
6707
6708 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6709                          const u8 *pmkid)
6710 {
6711         struct nl_msg *msg;
6712
6713         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6714             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6715             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6716                 nlmsg_free(msg);
6717                 return -ENOBUFS;
6718         }
6719
6720         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6721 }
6722
6723
6724 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6725 {
6726         struct i802_bss *bss = priv;
6727         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6728         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6729 }
6730
6731
6732 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6733 {
6734         struct i802_bss *bss = priv;
6735         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6736                    MAC2STR(bssid));
6737         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6738 }
6739
6740
6741 static int nl80211_flush_pmkid(void *priv)
6742 {
6743         struct i802_bss *bss = priv;
6744         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6745         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6746 }
6747
6748
6749 static void clean_survey_results(struct survey_results *survey_results)
6750 {
6751         struct freq_survey *survey, *tmp;
6752
6753         if (dl_list_empty(&survey_results->survey_list))
6754                 return;
6755
6756         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6757                               struct freq_survey, list) {
6758                 dl_list_del(&survey->list);
6759                 os_free(survey);
6760         }
6761 }
6762
6763
6764 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6765                        struct dl_list *survey_list)
6766 {
6767         struct freq_survey *survey;
6768
6769         survey = os_zalloc(sizeof(struct freq_survey));
6770         if  (!survey)
6771                 return;
6772
6773         survey->ifidx = ifidx;
6774         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6775         survey->filled = 0;
6776
6777         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6778                 survey->nf = (int8_t)
6779                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6780                 survey->filled |= SURVEY_HAS_NF;
6781         }
6782
6783         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6784                 survey->channel_time =
6785                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6786                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6787         }
6788
6789         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6790                 survey->channel_time_busy =
6791                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6792                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6793         }
6794
6795         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6796                 survey->channel_time_rx =
6797                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6798                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6799         }
6800
6801         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6802                 survey->channel_time_tx =
6803                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6804                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6805         }
6806
6807         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)",
6808                    survey->freq,
6809                    survey->nf,
6810                    (unsigned long int) survey->channel_time,
6811                    (unsigned long int) survey->channel_time_busy,
6812                    (unsigned long int) survey->channel_time_tx,
6813                    (unsigned long int) survey->channel_time_rx,
6814                    survey->filled);
6815
6816         dl_list_add_tail(survey_list, &survey->list);
6817 }
6818
6819
6820 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6821                            unsigned int freq_filter)
6822 {
6823         if (!freq_filter)
6824                 return 1;
6825
6826         return freq_filter == surveyed_freq;
6827 }
6828
6829
6830 static int survey_handler(struct nl_msg *msg, void *arg)
6831 {
6832         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6833         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6834         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6835         struct survey_results *survey_results;
6836         u32 surveyed_freq = 0;
6837         u32 ifidx;
6838
6839         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6840                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6841                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6842         };
6843
6844         survey_results = (struct survey_results *) arg;
6845
6846         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6847                   genlmsg_attrlen(gnlh, 0), NULL);
6848
6849         if (!tb[NL80211_ATTR_IFINDEX])
6850                 return NL_SKIP;
6851
6852         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6853
6854         if (!tb[NL80211_ATTR_SURVEY_INFO])
6855                 return NL_SKIP;
6856
6857         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6858                              tb[NL80211_ATTR_SURVEY_INFO],
6859                              survey_policy))
6860                 return NL_SKIP;
6861
6862         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6863                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6864                 return NL_SKIP;
6865         }
6866
6867         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6868
6869         if (!check_survey_ok(sinfo, surveyed_freq,
6870                              survey_results->freq_filter))
6871                 return NL_SKIP;
6872
6873         if (survey_results->freq_filter &&
6874             survey_results->freq_filter != surveyed_freq) {
6875                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6876                            surveyed_freq);
6877                 return NL_SKIP;
6878         }
6879
6880         add_survey(sinfo, ifidx, &survey_results->survey_list);
6881
6882         return NL_SKIP;
6883 }
6884
6885
6886 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6887 {
6888         struct i802_bss *bss = priv;
6889         struct wpa_driver_nl80211_data *drv = bss->drv;
6890         struct nl_msg *msg;
6891         int err;
6892         union wpa_event_data data;
6893         struct survey_results *survey_results;
6894
6895         os_memset(&data, 0, sizeof(data));
6896         survey_results = &data.survey_results;
6897
6898         dl_list_init(&survey_results->survey_list);
6899
6900         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6901         if (!msg)
6902                 return -ENOBUFS;
6903
6904         if (freq)
6905                 data.survey_results.freq_filter = freq;
6906
6907         do {
6908                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6909                 err = send_and_recv_msgs(drv, msg, survey_handler,
6910                                          survey_results);
6911         } while (err > 0);
6912
6913         if (err)
6914                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6915         else
6916                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6917
6918         clean_survey_results(survey_results);
6919         return err;
6920 }
6921
6922
6923 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
6924                                    const u8 *kck, size_t kck_len,
6925                                    const u8 *replay_ctr)
6926 {
6927         struct i802_bss *bss = priv;
6928         struct wpa_driver_nl80211_data *drv = bss->drv;
6929         struct nlattr *replay_nested;
6930         struct nl_msg *msg;
6931         int ret;
6932
6933         if (!drv->set_rekey_offload)
6934                 return;
6935
6936         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6937         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6938             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6939             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
6940             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
6941             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6942                     replay_ctr)) {
6943                 nl80211_nlmsg_clear(msg);
6944                 nlmsg_free(msg);
6945                 return;
6946         }
6947
6948         nla_nest_end(msg, replay_nested);
6949
6950         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6951         if (ret == -EOPNOTSUPP) {
6952                 wpa_printf(MSG_DEBUG,
6953                            "nl80211: Driver does not support rekey offload");
6954                 drv->set_rekey_offload = 0;
6955         }
6956 }
6957
6958
6959 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6960                                     const u8 *addr, int qos)
6961 {
6962         /* send data frame to poll STA and check whether
6963          * this frame is ACKed */
6964         struct {
6965                 struct ieee80211_hdr hdr;
6966                 u16 qos_ctl;
6967         } STRUCT_PACKED nulldata;
6968         size_t size;
6969
6970         /* Send data frame to poll STA and check whether this frame is ACKed */
6971
6972         os_memset(&nulldata, 0, sizeof(nulldata));
6973
6974         if (qos) {
6975                 nulldata.hdr.frame_control =
6976                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6977                                      WLAN_FC_STYPE_QOS_NULL);
6978                 size = sizeof(nulldata);
6979         } else {
6980                 nulldata.hdr.frame_control =
6981                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6982                                      WLAN_FC_STYPE_NULLFUNC);
6983                 size = sizeof(struct ieee80211_hdr);
6984         }
6985
6986         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6987         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6988         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6989         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6990
6991         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6992                                          0, 0, NULL, 0) < 0)
6993                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6994                            "send poll frame");
6995 }
6996
6997 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6998                                 int qos)
6999 {
7000         struct i802_bss *bss = priv;
7001         struct wpa_driver_nl80211_data *drv = bss->drv;
7002         struct nl_msg *msg;
7003         int ret;
7004
7005         if (!drv->poll_command_supported) {
7006                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7007                 return;
7008         }
7009
7010         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
7011             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7012                 nlmsg_free(msg);
7013                 return;
7014         }
7015
7016         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7017         if (ret < 0) {
7018                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
7019                            MACSTR " failed: ret=%d (%s)",
7020                            MAC2STR(addr), ret, strerror(-ret));
7021         }
7022 }
7023
7024
7025 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7026 {
7027         struct nl_msg *msg;
7028
7029         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
7030             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7031                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7032                 nlmsg_free(msg);
7033                 return -ENOBUFS;
7034         }
7035         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7036 }
7037
7038
7039 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7040                                      int ctwindow)
7041 {
7042         struct i802_bss *bss = priv;
7043
7044         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7045                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7046
7047         if (opp_ps != -1 || ctwindow != -1) {
7048 #ifdef ANDROID_P2P
7049                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7050 #else /* ANDROID_P2P */
7051                 return -1; /* Not yet supported */
7052 #endif /* ANDROID_P2P */
7053         }
7054
7055         if (legacy_ps == -1)
7056                 return 0;
7057         if (legacy_ps != 0 && legacy_ps != 1)
7058                 return -1; /* Not yet supported */
7059
7060         return nl80211_set_power_save(bss, legacy_ps);
7061 }
7062
7063
7064 static int nl80211_start_radar_detection(void *priv,
7065                                          struct hostapd_freq_params *freq)
7066 {
7067         struct i802_bss *bss = priv;
7068         struct wpa_driver_nl80211_data *drv = bss->drv;
7069         struct nl_msg *msg;
7070         int ret;
7071
7072         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)",
7073                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7074                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7075
7076         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7077                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7078                            "detection");
7079                 return -1;
7080         }
7081
7082         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7083             nl80211_put_freq_params(msg, freq) < 0) {
7084                 nlmsg_free(msg);
7085                 return -1;
7086         }
7087
7088         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7089         if (ret == 0)
7090                 return 0;
7091         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7092                    "%d (%s)", ret, strerror(-ret));
7093         return -1;
7094 }
7095
7096 #ifdef CONFIG_TDLS
7097
7098 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7099                                   u8 dialog_token, u16 status_code,
7100                                   u32 peer_capab, int initiator, const u8 *buf,
7101                                   size_t len)
7102 {
7103         struct i802_bss *bss = priv;
7104         struct wpa_driver_nl80211_data *drv = bss->drv;
7105         struct nl_msg *msg;
7106
7107         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7108                 return -EOPNOTSUPP;
7109
7110         if (!dst)
7111                 return -EINVAL;
7112
7113         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7114             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7115             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7116             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7117             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7118                 goto fail;
7119         if (peer_capab) {
7120                 /*
7121                  * The internal enum tdls_peer_capability definition is
7122                  * currently identical with the nl80211 enum
7123                  * nl80211_tdls_peer_capability, so no conversion is needed
7124                  * here.
7125                  */
7126                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7127                                 peer_capab))
7128                         goto fail;
7129         }
7130         if ((initiator &&
7131              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7132             nla_put(msg, NL80211_ATTR_IE, len, buf))
7133                 goto fail;
7134
7135         return send_and_recv_msgs(drv, msg, NULL, NULL);
7136
7137 fail:
7138         nlmsg_free(msg);
7139         return -ENOBUFS;
7140 }
7141
7142
7143 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7144 {
7145         struct i802_bss *bss = priv;
7146         struct wpa_driver_nl80211_data *drv = bss->drv;
7147         struct nl_msg *msg;
7148         enum nl80211_tdls_operation nl80211_oper;
7149
7150         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7151                 return -EOPNOTSUPP;
7152
7153         switch (oper) {
7154         case TDLS_DISCOVERY_REQ:
7155                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7156                 break;
7157         case TDLS_SETUP:
7158                 nl80211_oper = NL80211_TDLS_SETUP;
7159                 break;
7160         case TDLS_TEARDOWN:
7161                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7162                 break;
7163         case TDLS_ENABLE_LINK:
7164                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7165                 break;
7166         case TDLS_DISABLE_LINK:
7167                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7168                 break;
7169         case TDLS_ENABLE:
7170                 return 0;
7171         case TDLS_DISABLE:
7172                 return 0;
7173         default:
7174                 return -EINVAL;
7175         }
7176
7177         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7178             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7179             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7180                 nlmsg_free(msg);
7181                 return -ENOBUFS;
7182         }
7183
7184         return send_and_recv_msgs(drv, msg, NULL, NULL);
7185 }
7186
7187
7188 static int
7189 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7190                                    const struct hostapd_freq_params *params)
7191 {
7192         struct i802_bss *bss = priv;
7193         struct wpa_driver_nl80211_data *drv = bss->drv;
7194         struct nl_msg *msg;
7195         int ret = -ENOBUFS;
7196
7197         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7198             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7199                 return -EOPNOTSUPP;
7200
7201         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7202                    " oper_class=%u freq=%u",
7203                    MAC2STR(addr), oper_class, params->freq);
7204         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7205         if (!msg ||
7206             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7207             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7208             (ret = nl80211_put_freq_params(msg, params))) {
7209                 nlmsg_free(msg);
7210                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7211                 return ret;
7212         }
7213
7214         return send_and_recv_msgs(drv, msg, NULL, NULL);
7215 }
7216
7217
7218 static int
7219 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7220 {
7221         struct i802_bss *bss = priv;
7222         struct wpa_driver_nl80211_data *drv = bss->drv;
7223         struct nl_msg *msg;
7224
7225         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7226             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7227                 return -EOPNOTSUPP;
7228
7229         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7230                    MAC2STR(addr));
7231         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7232         if (!msg ||
7233             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7234                 nlmsg_free(msg);
7235                 wpa_printf(MSG_DEBUG,
7236                            "nl80211: Could not build TDLS cancel chan switch");
7237                 return -ENOBUFS;
7238         }
7239
7240         return send_and_recv_msgs(drv, msg, NULL, NULL);
7241 }
7242
7243 #endif /* CONFIG TDLS */
7244
7245
7246 static int driver_nl80211_set_key(const char *ifname, void *priv,
7247                                   enum wpa_alg alg, const u8 *addr,
7248                                   int key_idx, int set_tx,
7249                                   const u8 *seq, size_t seq_len,
7250                                   const u8 *key, size_t key_len)
7251 {
7252         struct i802_bss *bss = priv;
7253         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7254                                           set_tx, seq, seq_len, key, key_len);
7255 }
7256
7257
7258 static int driver_nl80211_scan2(void *priv,
7259                                 struct wpa_driver_scan_params *params)
7260 {
7261         struct i802_bss *bss = priv;
7262 #ifdef CONFIG_DRIVER_NL80211_QCA
7263         struct wpa_driver_nl80211_data *drv = bss->drv;
7264
7265         /*
7266          * Do a vendor specific scan if possible. If only_new_results is
7267          * set, do a normal scan since a kernel (cfg80211) BSS cache flush
7268          * cannot be achieved through a vendor scan. The below condition may
7269          * need to be modified if new scan flags are added in the future whose
7270          * functionality can only be achieved through a normal scan.
7271          */
7272         if (drv->scan_vendor_cmd_avail && !params->only_new_results)
7273                 return wpa_driver_nl80211_vendor_scan(bss, params);
7274 #endif /* CONFIG_DRIVER_NL80211_QCA */
7275         return wpa_driver_nl80211_scan(bss, params);
7276 }
7277
7278
7279 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7280                                          int reason_code)
7281 {
7282         struct i802_bss *bss = priv;
7283         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7284 }
7285
7286
7287 static int driver_nl80211_authenticate(void *priv,
7288                                        struct wpa_driver_auth_params *params)
7289 {
7290         struct i802_bss *bss = priv;
7291         return wpa_driver_nl80211_authenticate(bss, params);
7292 }
7293
7294
7295 static void driver_nl80211_deinit(void *priv)
7296 {
7297         struct i802_bss *bss = priv;
7298         wpa_driver_nl80211_deinit(bss);
7299 }
7300
7301
7302 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7303                                     const char *ifname)
7304 {
7305         struct i802_bss *bss = priv;
7306         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7307 }
7308
7309
7310 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7311                                     size_t data_len, int noack,
7312                                     unsigned int freq,
7313                                     const u16 *csa_offs, size_t csa_offs_len)
7314 {
7315         struct i802_bss *bss = priv;
7316         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7317                                             freq, 0, 0, 0, csa_offs,
7318                                             csa_offs_len);
7319 }
7320
7321
7322 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7323 {
7324         struct i802_bss *bss = priv;
7325         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7326 }
7327
7328
7329 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7330                                        const char *ifname, int vlan_id)
7331 {
7332         struct i802_bss *bss = priv;
7333         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7334 }
7335
7336
7337 static int driver_nl80211_read_sta_data(void *priv,
7338                                         struct hostap_sta_driver_data *data,
7339                                         const u8 *addr)
7340 {
7341         struct i802_bss *bss = priv;
7342         return i802_read_sta_data(bss, data, addr);
7343 }
7344
7345
7346 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7347                                       unsigned int wait_time,
7348                                       const u8 *dst, const u8 *src,
7349                                       const u8 *bssid,
7350                                       const u8 *data, size_t data_len,
7351                                       int no_cck)
7352 {
7353         struct i802_bss *bss = priv;
7354         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7355                                               bssid, data, data_len, no_cck);
7356 }
7357
7358
7359 static int driver_nl80211_probe_req_report(void *priv, int report)
7360 {
7361         struct i802_bss *bss = priv;
7362         return wpa_driver_nl80211_probe_req_report(bss, report);
7363 }
7364
7365
7366 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7367                                             const u8 *ies, size_t ies_len)
7368 {
7369         int ret;
7370         struct nl_msg *msg;
7371         struct i802_bss *bss = priv;
7372         struct wpa_driver_nl80211_data *drv = bss->drv;
7373         u16 mdid = WPA_GET_LE16(md);
7374
7375         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7376         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7377             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7378             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7379                 nlmsg_free(msg);
7380                 return -ENOBUFS;
7381         }
7382
7383         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7384         if (ret) {
7385                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7386                            "err=%d (%s)", ret, strerror(-ret));
7387         }
7388
7389         return ret;
7390 }
7391
7392
7393 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7394 {
7395         struct i802_bss *bss = priv;
7396         struct wpa_driver_nl80211_data *drv = bss->drv;
7397
7398         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7399                 return NULL;
7400
7401         return bss->addr;
7402 }
7403
7404
7405 static const char * scan_state_str(enum scan_states scan_state)
7406 {
7407         switch (scan_state) {
7408         case NO_SCAN:
7409                 return "NO_SCAN";
7410         case SCAN_REQUESTED:
7411                 return "SCAN_REQUESTED";
7412         case SCAN_STARTED:
7413                 return "SCAN_STARTED";
7414         case SCAN_COMPLETED:
7415                 return "SCAN_COMPLETED";
7416         case SCAN_ABORTED:
7417                 return "SCAN_ABORTED";
7418         case SCHED_SCAN_STARTED:
7419                 return "SCHED_SCAN_STARTED";
7420         case SCHED_SCAN_STOPPED:
7421                 return "SCHED_SCAN_STOPPED";
7422         case SCHED_SCAN_RESULTS:
7423                 return "SCHED_SCAN_RESULTS";
7424         }
7425
7426         return "??";
7427 }
7428
7429
7430 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7431 {
7432         struct i802_bss *bss = priv;
7433         struct wpa_driver_nl80211_data *drv = bss->drv;
7434         int res;
7435         char *pos, *end;
7436
7437         pos = buf;
7438         end = buf + buflen;
7439
7440         res = os_snprintf(pos, end - pos,
7441                           "ifindex=%d\n"
7442                           "ifname=%s\n"
7443                           "brname=%s\n"
7444                           "addr=" MACSTR "\n"
7445                           "freq=%d\n"
7446                           "%s%s%s%s%s",
7447                           bss->ifindex,
7448                           bss->ifname,
7449                           bss->brname,
7450                           MAC2STR(bss->addr),
7451                           bss->freq,
7452                           bss->beacon_set ? "beacon_set=1\n" : "",
7453                           bss->added_if_into_bridge ?
7454                           "added_if_into_bridge=1\n" : "",
7455                           bss->added_bridge ? "added_bridge=1\n" : "",
7456                           bss->in_deinit ? "in_deinit=1\n" : "",
7457                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7458         if (os_snprintf_error(end - pos, res))
7459                 return pos - buf;
7460         pos += res;
7461
7462         if (bss->wdev_id_set) {
7463                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7464                                   (unsigned long long) bss->wdev_id);
7465                 if (os_snprintf_error(end - pos, res))
7466                         return pos - buf;
7467                 pos += res;
7468         }
7469
7470         res = os_snprintf(pos, end - pos,
7471                           "phyname=%s\n"
7472                           "perm_addr=" MACSTR "\n"
7473                           "drv_ifindex=%d\n"
7474                           "operstate=%d\n"
7475                           "scan_state=%s\n"
7476                           "auth_bssid=" MACSTR "\n"
7477                           "auth_attempt_bssid=" MACSTR "\n"
7478                           "bssid=" MACSTR "\n"
7479                           "prev_bssid=" MACSTR "\n"
7480                           "associated=%d\n"
7481                           "assoc_freq=%u\n"
7482                           "monitor_sock=%d\n"
7483                           "monitor_ifidx=%d\n"
7484                           "monitor_refcount=%d\n"
7485                           "last_mgmt_freq=%u\n"
7486                           "eapol_tx_sock=%d\n"
7487                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7488                           drv->phyname,
7489                           MAC2STR(drv->perm_addr),
7490                           drv->ifindex,
7491                           drv->operstate,
7492                           scan_state_str(drv->scan_state),
7493                           MAC2STR(drv->auth_bssid),
7494                           MAC2STR(drv->auth_attempt_bssid),
7495                           MAC2STR(drv->bssid),
7496                           MAC2STR(drv->prev_bssid),
7497                           drv->associated,
7498                           drv->assoc_freq,
7499                           drv->monitor_sock,
7500                           drv->monitor_ifidx,
7501                           drv->monitor_refcount,
7502                           drv->last_mgmt_freq,
7503                           drv->eapol_tx_sock,
7504                           drv->ignore_if_down_event ?
7505                           "ignore_if_down_event=1\n" : "",
7506                           drv->scan_complete_events ?
7507                           "scan_complete_events=1\n" : "",
7508                           drv->disabled_11b_rates ?
7509                           "disabled_11b_rates=1\n" : "",
7510                           drv->pending_remain_on_chan ?
7511                           "pending_remain_on_chan=1\n" : "",
7512                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7513                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7514                           drv->poll_command_supported ?
7515                           "poll_command_supported=1\n" : "",
7516                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7517                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7518                           drv->retry_auth ? "retry_auth=1\n" : "",
7519                           drv->use_monitor ? "use_monitor=1\n" : "",
7520                           drv->ignore_next_local_disconnect ?
7521                           "ignore_next_local_disconnect=1\n" : "",
7522                           drv->ignore_next_local_deauth ?
7523                           "ignore_next_local_deauth=1\n" : "");
7524         if (os_snprintf_error(end - pos, res))
7525                 return pos - buf;
7526         pos += res;
7527
7528         if (drv->has_capability) {
7529                 res = os_snprintf(pos, end - pos,
7530                                   "capa.key_mgmt=0x%x\n"
7531                                   "capa.enc=0x%x\n"
7532                                   "capa.auth=0x%x\n"
7533                                   "capa.flags=0x%llx\n"
7534                                   "capa.rrm_flags=0x%x\n"
7535                                   "capa.max_scan_ssids=%d\n"
7536                                   "capa.max_sched_scan_ssids=%d\n"
7537                                   "capa.sched_scan_supported=%d\n"
7538                                   "capa.max_match_sets=%d\n"
7539                                   "capa.max_remain_on_chan=%u\n"
7540                                   "capa.max_stations=%u\n"
7541                                   "capa.probe_resp_offloads=0x%x\n"
7542                                   "capa.max_acl_mac_addrs=%u\n"
7543                                   "capa.num_multichan_concurrent=%u\n"
7544                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7545                                   "capa.mac_addr_rand_scan_supported=%d\n"
7546                                   "capa.conc_capab=%u\n"
7547                                   "capa.max_conc_chan_2_4=%u\n"
7548                                   "capa.max_conc_chan_5_0=%u\n",
7549                                   drv->capa.key_mgmt,
7550                                   drv->capa.enc,
7551                                   drv->capa.auth,
7552                                   (unsigned long long) drv->capa.flags,
7553                                   drv->capa.rrm_flags,
7554                                   drv->capa.max_scan_ssids,
7555                                   drv->capa.max_sched_scan_ssids,
7556                                   drv->capa.sched_scan_supported,
7557                                   drv->capa.max_match_sets,
7558                                   drv->capa.max_remain_on_chan,
7559                                   drv->capa.max_stations,
7560                                   drv->capa.probe_resp_offloads,
7561                                   drv->capa.max_acl_mac_addrs,
7562                                   drv->capa.num_multichan_concurrent,
7563                                   drv->capa.mac_addr_rand_sched_scan_supported,
7564                                   drv->capa.mac_addr_rand_scan_supported,
7565                                   drv->capa.conc_capab,
7566                                   drv->capa.max_conc_chan_2_4,
7567                                   drv->capa.max_conc_chan_5_0);
7568                 if (os_snprintf_error(end - pos, res))
7569                         return pos - buf;
7570                 pos += res;
7571         }
7572
7573         return pos - buf;
7574 }
7575
7576
7577 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7578 {
7579         if ((settings->head &&
7580              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7581                      settings->head_len, settings->head)) ||
7582             (settings->tail &&
7583              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7584                      settings->tail_len, settings->tail)) ||
7585             (settings->beacon_ies &&
7586              nla_put(msg, NL80211_ATTR_IE,
7587                      settings->beacon_ies_len, settings->beacon_ies)) ||
7588             (settings->proberesp_ies &&
7589              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7590                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7591             (settings->assocresp_ies &&
7592              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7593                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7594             (settings->probe_resp &&
7595              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7596                      settings->probe_resp_len, settings->probe_resp)))
7597                 return -ENOBUFS;
7598
7599         return 0;
7600 }
7601
7602
7603 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7604 {
7605         struct nl_msg *msg;
7606         struct i802_bss *bss = priv;
7607         struct wpa_driver_nl80211_data *drv = bss->drv;
7608         struct nlattr *beacon_csa;
7609         int ret = -ENOBUFS;
7610         int csa_off_len = 0;
7611         int i;
7612
7613         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7614                    settings->cs_count, settings->block_tx,
7615                    settings->freq_params.freq, settings->freq_params.bandwidth,
7616                    settings->freq_params.center_freq1,
7617                    settings->freq_params.center_freq2);
7618
7619         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7620                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7621                 return -EOPNOTSUPP;
7622         }
7623
7624         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7625             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7626                 return -EOPNOTSUPP;
7627
7628         /*
7629          * Remove empty counters, assuming Probe Response and Beacon frame
7630          * counters match. This implementation assumes that there are only two
7631          * counters.
7632          */
7633         if (settings->counter_offset_beacon[0] &&
7634             !settings->counter_offset_beacon[1]) {
7635                 csa_off_len = 1;
7636         } else if (settings->counter_offset_beacon[1] &&
7637                    !settings->counter_offset_beacon[0]) {
7638                 csa_off_len = 1;
7639                 settings->counter_offset_beacon[0] =
7640                         settings->counter_offset_beacon[1];
7641                 settings->counter_offset_presp[0] =
7642                         settings->counter_offset_presp[1];
7643         } else if (settings->counter_offset_beacon[1] &&
7644                    settings->counter_offset_beacon[0]) {
7645                 csa_off_len = 2;
7646         } else {
7647                 wpa_printf(MSG_ERROR, "nl80211: No CSA counters provided");
7648                 return -EINVAL;
7649         }
7650
7651         /* Check CSA counters validity */
7652         if (drv->capa.max_csa_counters &&
7653             csa_off_len > drv->capa.max_csa_counters) {
7654                 wpa_printf(MSG_ERROR,
7655                            "nl80211: Too many CSA counters provided");
7656                 return -EINVAL;
7657         }
7658
7659         if (!settings->beacon_csa.tail)
7660                 return -EINVAL;
7661
7662         for (i = 0; i < csa_off_len; i++) {
7663                 u16 csa_c_off_bcn = settings->counter_offset_beacon[i];
7664                 u16 csa_c_off_presp = settings->counter_offset_presp[i];
7665
7666                 if ((settings->beacon_csa.tail_len <= csa_c_off_bcn) ||
7667                     (settings->beacon_csa.tail[csa_c_off_bcn] !=
7668                      settings->cs_count))
7669                         return -EINVAL;
7670
7671                 if (settings->beacon_csa.probe_resp &&
7672                     ((settings->beacon_csa.probe_resp_len <=
7673                       csa_c_off_presp) ||
7674                      (settings->beacon_csa.probe_resp[csa_c_off_presp] !=
7675                       settings->cs_count)))
7676                         return -EINVAL;
7677         }
7678
7679         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7680             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7681                         settings->cs_count) ||
7682             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7683             (settings->block_tx &&
7684              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7685                 goto error;
7686
7687         /* beacon_after params */
7688         ret = set_beacon_data(msg, &settings->beacon_after);
7689         if (ret)
7690                 goto error;
7691
7692         /* beacon_csa params */
7693         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7694         if (!beacon_csa)
7695                 goto fail;
7696
7697         ret = set_beacon_data(msg, &settings->beacon_csa);
7698         if (ret)
7699                 goto error;
7700
7701         if (nla_put(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7702                     csa_off_len * sizeof(u16),
7703                     settings->counter_offset_beacon) ||
7704             (settings->beacon_csa.probe_resp &&
7705              nla_put(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7706                      csa_off_len * sizeof(u16),
7707                      settings->counter_offset_presp)))
7708                 goto fail;
7709
7710         nla_nest_end(msg, beacon_csa);
7711         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7712         if (ret) {
7713                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7714                            ret, strerror(-ret));
7715         }
7716         return ret;
7717
7718 fail:
7719         ret = -ENOBUFS;
7720 error:
7721         nlmsg_free(msg);
7722         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7723         return ret;
7724 }
7725
7726
7727 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7728                           u8 user_priority, u16 admitted_time)
7729 {
7730         struct i802_bss *bss = priv;
7731         struct wpa_driver_nl80211_data *drv = bss->drv;
7732         struct nl_msg *msg;
7733         int ret;
7734
7735         wpa_printf(MSG_DEBUG,
7736                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7737                    tsid, admitted_time, user_priority);
7738
7739         if (!is_sta_interface(drv->nlmode))
7740                 return -ENOTSUP;
7741
7742         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7743         if (!msg ||
7744             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7745             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7746             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7747             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7748                 nlmsg_free(msg);
7749                 return -ENOBUFS;
7750         }
7751
7752         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7753         if (ret)
7754                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7755                            ret, strerror(-ret));
7756         return ret;
7757 }
7758
7759
7760 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
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         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7768
7769         if (!is_sta_interface(drv->nlmode))
7770                 return -ENOTSUP;
7771
7772         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7773             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7774             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7775                 nlmsg_free(msg);
7776                 return -ENOBUFS;
7777         }
7778
7779         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7780         if (ret)
7781                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7782                            ret, strerror(-ret));
7783         return ret;
7784 }
7785
7786
7787 #ifdef CONFIG_TESTING_OPTIONS
7788 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7789 {
7790         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7791         struct wpabuf *buf = arg;
7792
7793         if (!buf)
7794                 return NL_SKIP;
7795
7796         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7797                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7798                 return NL_SKIP;
7799         }
7800
7801         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7802                         genlmsg_attrlen(gnlh, 0));
7803
7804         return NL_SKIP;
7805 }
7806 #endif /* CONFIG_TESTING_OPTIONS */
7807
7808
7809 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7810 {
7811         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7812         struct nlattr *nl_vendor_reply, *nl;
7813         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7814         struct wpabuf *buf = arg;
7815         int rem;
7816
7817         if (!buf)
7818                 return NL_SKIP;
7819
7820         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7821                   genlmsg_attrlen(gnlh, 0), NULL);
7822         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7823
7824         if (!nl_vendor_reply)
7825                 return NL_SKIP;
7826
7827         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7828                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7829                 return NL_SKIP;
7830         }
7831
7832         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7833                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7834         }
7835
7836         return NL_SKIP;
7837 }
7838
7839
7840 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7841                               unsigned int subcmd, const u8 *data,
7842                               size_t data_len, struct wpabuf *buf)
7843 {
7844         struct i802_bss *bss = priv;
7845         struct wpa_driver_nl80211_data *drv = bss->drv;
7846         struct nl_msg *msg;
7847         int ret;
7848
7849 #ifdef CONFIG_TESTING_OPTIONS
7850         if (vendor_id == 0xffffffff) {
7851                 msg = nlmsg_alloc();
7852                 if (!msg)
7853                         return -ENOMEM;
7854
7855                 nl80211_cmd(drv, msg, 0, subcmd);
7856                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7857                     0)
7858                         goto fail;
7859                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7860                 if (ret)
7861                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7862                                    ret);
7863                 return ret;
7864         }
7865 #endif /* CONFIG_TESTING_OPTIONS */
7866
7867         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7868             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7869             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7870             (data &&
7871              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7872                 goto fail;
7873
7874         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7875         if (ret)
7876                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7877                            ret);
7878         return ret;
7879
7880 fail:
7881         nlmsg_free(msg);
7882         return -ENOBUFS;
7883 }
7884
7885
7886 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7887                                u8 qos_map_set_len)
7888 {
7889         struct i802_bss *bss = priv;
7890         struct wpa_driver_nl80211_data *drv = bss->drv;
7891         struct nl_msg *msg;
7892         int ret;
7893
7894         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7895                     qos_map_set, qos_map_set_len);
7896
7897         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7898             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7899                 nlmsg_free(msg);
7900                 return -ENOBUFS;
7901         }
7902
7903         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7904         if (ret)
7905                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7906
7907         return ret;
7908 }
7909
7910
7911 static int nl80211_set_wowlan(void *priv,
7912                               const struct wowlan_triggers *triggers)
7913 {
7914         struct i802_bss *bss = priv;
7915         struct wpa_driver_nl80211_data *drv = bss->drv;
7916         struct nl_msg *msg;
7917         struct nlattr *wowlan_triggers;
7918         int ret;
7919
7920         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7921
7922         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_SET_WOWLAN)) ||
7923             !(wowlan_triggers = nla_nest_start(msg,
7924                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7925             (triggers->any &&
7926              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7927             (triggers->disconnect &&
7928              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7929             (triggers->magic_pkt &&
7930              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7931             (triggers->gtk_rekey_failure &&
7932              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7933             (triggers->eap_identity_req &&
7934              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7935             (triggers->four_way_handshake &&
7936              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7937             (triggers->rfkill_release &&
7938              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7939                 nlmsg_free(msg);
7940                 return -ENOBUFS;
7941         }
7942
7943         nla_nest_end(msg, wowlan_triggers);
7944
7945         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7946         if (ret)
7947                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7948
7949         return ret;
7950 }
7951
7952
7953 #ifdef CONFIG_DRIVER_NL80211_QCA
7954 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7955 {
7956         struct i802_bss *bss = priv;
7957         struct wpa_driver_nl80211_data *drv = bss->drv;
7958         struct nl_msg *msg;
7959         struct nlattr *params;
7960
7961         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7962
7963         if (!drv->roaming_vendor_cmd_avail) {
7964                 wpa_printf(MSG_DEBUG,
7965                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7966                 return -1;
7967         }
7968
7969         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7970             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7971             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7972                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7973             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7974             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7975                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7976                         QCA_ROAMING_NOT_ALLOWED) ||
7977             (bssid &&
7978              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7979                 nlmsg_free(msg);
7980                 return -1;
7981         }
7982         nla_nest_end(msg, params);
7983
7984         return send_and_recv_msgs(drv, msg, NULL, NULL);
7985 }
7986 #endif /* CONFIG_DRIVER_NL80211_QCA */
7987
7988
7989 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7990 {
7991         struct i802_bss *bss = priv;
7992         struct wpa_driver_nl80211_data *drv = bss->drv;
7993         int new_addr = addr != NULL;
7994
7995         if (!addr)
7996                 addr = drv->perm_addr;
7997
7998         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7999                 return -1;
8000
8001         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8002         {
8003                 wpa_printf(MSG_DEBUG,
8004                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8005                            bss->ifname, MAC2STR(addr));
8006                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8007                                           1) < 0) {
8008                         wpa_printf(MSG_DEBUG,
8009                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8010                 }
8011                 return -1;
8012         }
8013
8014         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8015                    bss->ifname, MAC2STR(addr));
8016         drv->addr_changed = new_addr;
8017         os_memcpy(bss->addr, addr, ETH_ALEN);
8018
8019         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8020         {
8021                 wpa_printf(MSG_DEBUG,
8022                            "nl80211: Could not restore interface UP after set_mac_addr");
8023         }
8024
8025         return 0;
8026 }
8027
8028
8029 #ifdef CONFIG_MESH
8030
8031 static int wpa_driver_nl80211_init_mesh(void *priv)
8032 {
8033         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8034                 wpa_printf(MSG_INFO,
8035                            "nl80211: Failed to set interface into mesh mode");
8036                 return -1;
8037         }
8038         return 0;
8039 }
8040
8041
8042 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
8043                                size_t mesh_id_len)
8044 {
8045         if (mesh_id) {
8046                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
8047                                   mesh_id, mesh_id_len);
8048                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
8049         }
8050
8051         return 0;
8052 }
8053
8054
8055 static int nl80211_join_mesh(struct i802_bss *bss,
8056                              struct wpa_driver_mesh_join_params *params)
8057 {
8058         struct wpa_driver_nl80211_data *drv = bss->drv;
8059         struct nl_msg *msg;
8060         struct nlattr *container;
8061         int ret = -1;
8062
8063         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8064         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
8065         if (!msg ||
8066             nl80211_put_freq_params(msg, &params->freq) ||
8067             nl80211_put_basic_rates(msg, params->basic_rates) ||
8068             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
8069             nl80211_put_beacon_int(msg, params->beacon_int))
8070                 goto fail;
8071
8072         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8073
8074         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8075         if (!container)
8076                 goto fail;
8077
8078         if (params->ies) {
8079                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8080                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8081                             params->ies))
8082                         goto fail;
8083         }
8084         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8085         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8086                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8087                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8088                         goto fail;
8089         }
8090         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8091             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8092                 goto fail;
8093         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8094             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8095                 goto fail;
8096         nla_nest_end(msg, container);
8097
8098         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8099         if (!container)
8100                 goto fail;
8101
8102         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8103             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8104                 goto fail;
8105         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
8106             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8107                         params->max_peer_links))
8108                 goto fail;
8109
8110         /*
8111          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
8112          * the timer could disconnect stations even in that case.
8113          */
8114         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8115                         params->conf.peer_link_timeout)) {
8116                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8117                 goto fail;
8118         }
8119
8120         nla_nest_end(msg, container);
8121
8122         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8123         msg = NULL;
8124         if (ret) {
8125                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8126                            ret, strerror(-ret));
8127                 goto fail;
8128         }
8129         ret = 0;
8130         bss->freq = params->freq.freq;
8131         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8132
8133 fail:
8134         nlmsg_free(msg);
8135         return ret;
8136 }
8137
8138
8139 static int
8140 wpa_driver_nl80211_join_mesh(void *priv,
8141                              struct wpa_driver_mesh_join_params *params)
8142 {
8143         struct i802_bss *bss = priv;
8144         int ret, timeout;
8145
8146         timeout = params->conf.peer_link_timeout;
8147
8148         /* Disable kernel inactivity timer */
8149         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8150                 params->conf.peer_link_timeout = 0;
8151
8152         ret = nl80211_join_mesh(bss, params);
8153         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8154                 wpa_printf(MSG_DEBUG,
8155                            "nl80211: Mesh join retry for peer_link_timeout");
8156                 /*
8157                  * Old kernel does not support setting
8158                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8159                  * into future from peer_link_timeout.
8160                  */
8161                 params->conf.peer_link_timeout = timeout + 60;
8162                 ret = nl80211_join_mesh(priv, params);
8163         }
8164
8165         params->conf.peer_link_timeout = timeout;
8166         return ret;
8167 }
8168
8169
8170 static int wpa_driver_nl80211_leave_mesh(void *priv)
8171 {
8172         struct i802_bss *bss = priv;
8173         struct wpa_driver_nl80211_data *drv = bss->drv;
8174         struct nl_msg *msg;
8175         int ret;
8176
8177         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8178         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8179         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8180         if (ret) {
8181                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8182                            ret, strerror(-ret));
8183         } else {
8184                 wpa_printf(MSG_DEBUG,
8185                            "nl80211: mesh leave request send successfully");
8186         }
8187
8188         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8189                                         NL80211_IFTYPE_STATION)) {
8190                 wpa_printf(MSG_INFO,
8191                            "nl80211: Failed to set interface into station mode");
8192         }
8193         return ret;
8194 }
8195
8196 #endif /* CONFIG_MESH */
8197
8198
8199 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8200                                       const u8 *ipaddr, int prefixlen,
8201                                       const u8 *addr)
8202 {
8203 #ifdef CONFIG_LIBNL3_ROUTE
8204         struct i802_bss *bss = priv;
8205         struct wpa_driver_nl80211_data *drv = bss->drv;
8206         struct rtnl_neigh *rn;
8207         struct nl_addr *nl_ipaddr = NULL;
8208         struct nl_addr *nl_lladdr = NULL;
8209         int family, addrsize;
8210         int res;
8211
8212         if (!ipaddr || prefixlen == 0 || !addr)
8213                 return -EINVAL;
8214
8215         if (bss->br_ifindex == 0) {
8216                 wpa_printf(MSG_DEBUG,
8217                            "nl80211: bridge must be set before adding an ip neigh to it");
8218                 return -1;
8219         }
8220
8221         if (!drv->rtnl_sk) {
8222                 wpa_printf(MSG_DEBUG,
8223                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8224                 return -1;
8225         }
8226
8227         if (version == 4) {
8228                 family = AF_INET;
8229                 addrsize = 4;
8230         } else if (version == 6) {
8231                 family = AF_INET6;
8232                 addrsize = 16;
8233         } else {
8234                 return -EINVAL;
8235         }
8236
8237         rn = rtnl_neigh_alloc();
8238         if (rn == NULL)
8239                 return -ENOMEM;
8240
8241         /* set the destination ip address for neigh */
8242         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8243         if (nl_ipaddr == NULL) {
8244                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8245                 res = -ENOMEM;
8246                 goto errout;
8247         }
8248         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8249         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8250         if (res) {
8251                 wpa_printf(MSG_DEBUG,
8252                            "nl80211: neigh set destination addr failed");
8253                 goto errout;
8254         }
8255
8256         /* set the corresponding lladdr for neigh */
8257         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8258         if (nl_lladdr == NULL) {
8259                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8260                 res = -ENOMEM;
8261                 goto errout;
8262         }
8263         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8264
8265         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8266         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8267
8268         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8269         if (res) {
8270                 wpa_printf(MSG_DEBUG,
8271                            "nl80211: Adding bridge ip neigh failed: %s",
8272                            strerror(errno));
8273         }
8274 errout:
8275         if (nl_lladdr)
8276                 nl_addr_put(nl_lladdr);
8277         if (nl_ipaddr)
8278                 nl_addr_put(nl_ipaddr);
8279         if (rn)
8280                 rtnl_neigh_put(rn);
8281         return res;
8282 #else /* CONFIG_LIBNL3_ROUTE */
8283         return -1;
8284 #endif /* CONFIG_LIBNL3_ROUTE */
8285 }
8286
8287
8288 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8289                                          const u8 *ipaddr)
8290 {
8291 #ifdef CONFIG_LIBNL3_ROUTE
8292         struct i802_bss *bss = priv;
8293         struct wpa_driver_nl80211_data *drv = bss->drv;
8294         struct rtnl_neigh *rn;
8295         struct nl_addr *nl_ipaddr;
8296         int family, addrsize;
8297         int res;
8298
8299         if (!ipaddr)
8300                 return -EINVAL;
8301
8302         if (version == 4) {
8303                 family = AF_INET;
8304                 addrsize = 4;
8305         } else if (version == 6) {
8306                 family = AF_INET6;
8307                 addrsize = 16;
8308         } else {
8309                 return -EINVAL;
8310         }
8311
8312         if (bss->br_ifindex == 0) {
8313                 wpa_printf(MSG_DEBUG,
8314                            "nl80211: bridge must be set to delete an ip neigh");
8315                 return -1;
8316         }
8317
8318         if (!drv->rtnl_sk) {
8319                 wpa_printf(MSG_DEBUG,
8320                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8321                 return -1;
8322         }
8323
8324         rn = rtnl_neigh_alloc();
8325         if (rn == NULL)
8326                 return -ENOMEM;
8327
8328         /* set the destination ip address for neigh */
8329         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8330         if (nl_ipaddr == NULL) {
8331                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8332                 res = -ENOMEM;
8333                 goto errout;
8334         }
8335         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8336         if (res) {
8337                 wpa_printf(MSG_DEBUG,
8338                            "nl80211: neigh set destination addr failed");
8339                 goto errout;
8340         }
8341
8342         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8343
8344         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8345         if (res) {
8346                 wpa_printf(MSG_DEBUG,
8347                            "nl80211: Deleting bridge ip neigh failed: %s",
8348                            strerror(errno));
8349         }
8350 errout:
8351         if (nl_ipaddr)
8352                 nl_addr_put(nl_ipaddr);
8353         if (rn)
8354                 rtnl_neigh_put(rn);
8355         return res;
8356 #else /* CONFIG_LIBNL3_ROUTE */
8357         return -1;
8358 #endif /* CONFIG_LIBNL3_ROUTE */
8359 }
8360
8361
8362 static int linux_write_system_file(const char *path, unsigned int val)
8363 {
8364         char buf[50];
8365         int fd, len;
8366
8367         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8368         if (os_snprintf_error(sizeof(buf), len))
8369                 return -1;
8370
8371         fd = open(path, O_WRONLY);
8372         if (fd < 0)
8373                 return -1;
8374
8375         if (write(fd, buf, len) < 0) {
8376                 wpa_printf(MSG_DEBUG,
8377                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8378                            path, val);
8379                 close(fd);
8380                 return -1;
8381         }
8382         close(fd);
8383
8384         return 0;
8385 }
8386
8387
8388 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8389 {
8390         switch (attr) {
8391         case DRV_BR_PORT_ATTR_PROXYARP:
8392                 return "proxyarp_wifi";
8393         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8394                 return "hairpin_mode";
8395         }
8396
8397         return NULL;
8398 }
8399
8400
8401 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8402                                        unsigned int val)
8403 {
8404         struct i802_bss *bss = priv;
8405         char path[128];
8406         const char *attr_txt;
8407
8408         attr_txt = drv_br_port_attr_str(attr);
8409         if (attr_txt == NULL)
8410                 return -EINVAL;
8411
8412         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8413                     bss->ifname, attr_txt);
8414
8415         if (linux_write_system_file(path, val))
8416                 return -1;
8417
8418         return 0;
8419 }
8420
8421
8422 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8423 {
8424         switch (param) {
8425         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8426                 return "arp_accept";
8427         default:
8428                 return NULL;
8429         }
8430 }
8431
8432
8433 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8434                                        unsigned int val)
8435 {
8436         struct i802_bss *bss = priv;
8437         char path[128];
8438         const char *param_txt;
8439         int ip_version = 4;
8440
8441         if (param == DRV_BR_MULTICAST_SNOOPING) {
8442                 os_snprintf(path, sizeof(path),
8443                             "/sys/devices/virtual/net/%s/bridge/multicast_snooping",
8444                             bss->brname);
8445                 goto set_val;
8446         }
8447
8448         param_txt = drv_br_net_param_str(param);
8449         if (param_txt == NULL)
8450                 return -EINVAL;
8451
8452         switch (param) {
8453                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8454                         ip_version = 4;
8455                         break;
8456                 default:
8457                         return -EINVAL;
8458         }
8459
8460         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8461                     ip_version, bss->brname, param_txt);
8462
8463 set_val:
8464         if (linux_write_system_file(path, val))
8465                 return -1;
8466
8467         return 0;
8468 }
8469
8470
8471 #ifdef CONFIG_DRIVER_NL80211_QCA
8472
8473 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8474 {
8475         switch (hw_mode) {
8476         case HOSTAPD_MODE_IEEE80211B:
8477                 return QCA_ACS_MODE_IEEE80211B;
8478         case HOSTAPD_MODE_IEEE80211G:
8479                 return QCA_ACS_MODE_IEEE80211G;
8480         case HOSTAPD_MODE_IEEE80211A:
8481                 return QCA_ACS_MODE_IEEE80211A;
8482         case HOSTAPD_MODE_IEEE80211AD:
8483                 return QCA_ACS_MODE_IEEE80211AD;
8484         case HOSTAPD_MODE_IEEE80211ANY:
8485                 return QCA_ACS_MODE_IEEE80211ANY;
8486         default:
8487                 return -1;
8488         }
8489 }
8490
8491
8492 static int add_acs_freq_list(struct nl_msg *msg, const int *freq_list)
8493 {
8494         int i, len, ret;
8495         u32 *freqs;
8496
8497         if (!freq_list)
8498                 return 0;
8499         len = int_array_len(freq_list);
8500         freqs = os_malloc(sizeof(u32) * len);
8501         if (!freqs)
8502                 return -1;
8503         for (i = 0; i < len; i++)
8504                 freqs[i] = freq_list[i];
8505         ret = nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_FREQ_LIST,
8506                       sizeof(u32) * len, freqs);
8507         os_free(freqs);
8508         return ret;
8509 }
8510
8511
8512 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8513 {
8514         struct i802_bss *bss = priv;
8515         struct wpa_driver_nl80211_data *drv = bss->drv;
8516         struct nl_msg *msg;
8517         struct nlattr *data;
8518         int ret;
8519         int mode;
8520
8521         mode = hw_mode_to_qca_acs(params->hw_mode);
8522         if (mode < 0)
8523                 return -1;
8524
8525         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8526             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8527             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8528                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8529             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8530             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8531             (params->ht_enabled &&
8532              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8533             (params->ht40_enabled &&
8534              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED)) ||
8535             (params->vht_enabled &&
8536              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_VHT_ENABLED)) ||
8537             nla_put_u16(msg, QCA_WLAN_VENDOR_ATTR_ACS_CHWIDTH,
8538                         params->ch_width) ||
8539             (params->ch_list_len &&
8540              nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_CH_LIST, params->ch_list_len,
8541                      params->ch_list)) ||
8542             add_acs_freq_list(msg, params->freq_list)) {
8543                 nlmsg_free(msg);
8544                 return -ENOBUFS;
8545         }
8546         nla_nest_end(msg, data);
8547
8548         wpa_printf(MSG_DEBUG,
8549                    "nl80211: ACS Params: HW_MODE: %d HT: %d HT40: %d VHT: %d BW: %d CH_LIST_LEN: %u",
8550                    params->hw_mode, params->ht_enabled, params->ht40_enabled,
8551                    params->vht_enabled, params->ch_width, params->ch_list_len);
8552
8553         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8554         if (ret) {
8555                 wpa_printf(MSG_DEBUG,
8556                            "nl80211: Failed to invoke driver ACS function: %s",
8557                            strerror(errno));
8558         }
8559         return ret;
8560 }
8561
8562
8563 static int nl80211_set_band(void *priv, enum set_band band)
8564 {
8565         struct i802_bss *bss = priv;
8566         struct wpa_driver_nl80211_data *drv = bss->drv;
8567         struct nl_msg *msg;
8568         struct nlattr *data;
8569         int ret;
8570         enum qca_set_band qca_band;
8571
8572         if (!drv->setband_vendor_cmd_avail)
8573                 return -1;
8574
8575         switch (band) {
8576         case WPA_SETBAND_AUTO:
8577                 qca_band = QCA_SETBAND_AUTO;
8578                 break;
8579         case WPA_SETBAND_5G:
8580                 qca_band = QCA_SETBAND_5G;
8581                 break;
8582         case WPA_SETBAND_2G:
8583                 qca_band = QCA_SETBAND_2G;
8584                 break;
8585         default:
8586                 return -1;
8587         }
8588
8589         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8590             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8591             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8592                         QCA_NL80211_VENDOR_SUBCMD_SETBAND) ||
8593             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8594             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_SETBAND_VALUE, qca_band)) {
8595                 nlmsg_free(msg);
8596                 return -ENOBUFS;
8597         }
8598         nla_nest_end(msg, data);
8599
8600         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8601         if (ret) {
8602                 wpa_printf(MSG_DEBUG,
8603                            "nl80211: Driver setband function failed: %s",
8604                            strerror(errno));
8605         }
8606         return ret;
8607 }
8608
8609
8610 struct nl80211_pcl {
8611         unsigned int num;
8612         unsigned int *freq_list;
8613 };
8614
8615 static int preferred_freq_info_handler(struct nl_msg *msg, void *arg)
8616 {
8617         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8618         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8619         struct nl80211_pcl *param = arg;
8620         struct nlattr *nl_vend, *attr;
8621         enum qca_iface_type iface_type;
8622         struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
8623         unsigned int num, max_num;
8624         u32 *freqs;
8625
8626         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8627                   genlmsg_attrlen(gnlh, 0), NULL);
8628
8629         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
8630         if (!nl_vend)
8631                 return NL_SKIP;
8632
8633         nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
8634                   nla_data(nl_vend), nla_len(nl_vend), NULL);
8635
8636         attr = tb_vendor[
8637                 QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE];
8638         if (!attr) {
8639                 wpa_printf(MSG_ERROR, "nl80211: iface_type couldn't be found");
8640                 param->num = 0;
8641                 return NL_SKIP;
8642         }
8643
8644         iface_type = (enum qca_iface_type) nla_get_u32(attr);
8645         wpa_printf(MSG_DEBUG, "nl80211: Driver returned iface_type=%d",
8646                    iface_type);
8647
8648         attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST];
8649         if (!attr) {
8650                 wpa_printf(MSG_ERROR,
8651                            "nl80211: preferred_freq_list couldn't be found");
8652                 param->num = 0;
8653                 return NL_SKIP;
8654         }
8655
8656         /*
8657          * param->num has the maximum number of entries for which there
8658          * is room in the freq_list provided by the caller.
8659          */
8660         freqs = nla_data(attr);
8661         max_num = nla_len(attr) / sizeof(u32);
8662         if (max_num > param->num)
8663                 max_num = param->num;
8664         for (num = 0; num < max_num; num++)
8665                 param->freq_list[num] = freqs[num];
8666         param->num = num;
8667
8668         return NL_SKIP;
8669 }
8670
8671
8672 static int nl80211_get_pref_freq_list(void *priv,
8673                                       enum wpa_driver_if_type if_type,
8674                                       unsigned int *num,
8675                                       unsigned int *freq_list)
8676 {
8677         struct i802_bss *bss = priv;
8678         struct wpa_driver_nl80211_data *drv = bss->drv;
8679         struct nl_msg *msg;
8680         int ret;
8681         unsigned int i;
8682         struct nlattr *params;
8683         struct nl80211_pcl param;
8684         enum qca_iface_type iface_type;
8685
8686         if (!drv->get_pref_freq_list)
8687                 return -1;
8688
8689         switch (if_type) {
8690         case WPA_IF_STATION:
8691                 iface_type = QCA_IFACE_TYPE_STA;
8692                 break;
8693         case WPA_IF_AP_BSS:
8694                 iface_type = QCA_IFACE_TYPE_AP;
8695                 break;
8696         case WPA_IF_P2P_GO:
8697                 iface_type = QCA_IFACE_TYPE_P2P_GO;
8698                 break;
8699         case WPA_IF_P2P_CLIENT:
8700                 iface_type = QCA_IFACE_TYPE_P2P_CLIENT;
8701                 break;
8702         case WPA_IF_IBSS:
8703                 iface_type = QCA_IFACE_TYPE_IBSS;
8704                 break;
8705         case WPA_IF_TDLS:
8706                 iface_type = QCA_IFACE_TYPE_TDLS;
8707                 break;
8708         default:
8709                 return -1;
8710         }
8711
8712         param.num = *num;
8713         param.freq_list = freq_list;
8714
8715         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8716             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
8717             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8718             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8719                         QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST) ||
8720             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8721             nla_put_u32(msg,
8722                         QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE,
8723                         iface_type)) {
8724                 wpa_printf(MSG_ERROR,
8725                            "%s: err in adding vendor_cmd and vendor_data",
8726                            __func__);
8727                 nlmsg_free(msg);
8728                 return -1;
8729         }
8730         nla_nest_end(msg, params);
8731
8732         os_memset(freq_list, 0, *num * sizeof(freq_list[0]));
8733         ret = send_and_recv_msgs(drv, msg, preferred_freq_info_handler, &param);
8734         if (ret) {
8735                 wpa_printf(MSG_ERROR,
8736                            "%s: err in send_and_recv_msgs", __func__);
8737                 return ret;
8738         }
8739
8740         *num = param.num;
8741
8742         for (i = 0; i < *num; i++) {
8743                 wpa_printf(MSG_DEBUG, "nl80211: preferred_channel_list[%d]=%d",
8744                            i, freq_list[i]);
8745         }
8746
8747         return 0;
8748 }
8749
8750
8751 static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
8752 {
8753         struct i802_bss *bss = priv;
8754         struct wpa_driver_nl80211_data *drv = bss->drv;
8755         struct nl_msg *msg;
8756         int ret;
8757         struct nlattr *params;
8758
8759         if (!drv->set_prob_oper_freq)
8760                 return -1;
8761
8762         wpa_printf(MSG_DEBUG,
8763                    "nl80211: Set P2P probable operating freq %u for ifindex %d",
8764                    freq, bss->ifindex);
8765
8766         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8767             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8768             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8769                         QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL) ||
8770             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8771             nla_put_u32(msg,
8772                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_IFACE_TYPE,
8773                         QCA_IFACE_TYPE_P2P_CLIENT) ||
8774             nla_put_u32(msg,
8775                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_FREQ,
8776                         freq)) {
8777                 wpa_printf(MSG_ERROR,
8778                            "%s: err in adding vendor_cmd and vendor_data",
8779                            __func__);
8780                 nlmsg_free(msg);
8781                 return -1;
8782         }
8783         nla_nest_end(msg, params);
8784
8785         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8786         msg = NULL;
8787         if (ret) {
8788                 wpa_printf(MSG_ERROR, "%s: err in send_and_recv_msgs",
8789                            __func__);
8790                 return ret;
8791         }
8792         nlmsg_free(msg);
8793         return 0;
8794 }
8795
8796 #endif /* CONFIG_DRIVER_NL80211_QCA */
8797
8798
8799 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8800         .name = "nl80211",
8801         .desc = "Linux nl80211/cfg80211",
8802         .get_bssid = wpa_driver_nl80211_get_bssid,
8803         .get_ssid = wpa_driver_nl80211_get_ssid,
8804         .set_key = driver_nl80211_set_key,
8805         .scan2 = driver_nl80211_scan2,
8806         .sched_scan = wpa_driver_nl80211_sched_scan,
8807         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8808         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8809         .abort_scan = wpa_driver_nl80211_abort_scan,
8810         .deauthenticate = driver_nl80211_deauthenticate,
8811         .authenticate = driver_nl80211_authenticate,
8812         .associate = wpa_driver_nl80211_associate,
8813         .global_init = nl80211_global_init,
8814         .global_deinit = nl80211_global_deinit,
8815         .init2 = wpa_driver_nl80211_init,
8816         .deinit = driver_nl80211_deinit,
8817         .get_capa = wpa_driver_nl80211_get_capa,
8818         .set_operstate = wpa_driver_nl80211_set_operstate,
8819         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8820         .set_country = wpa_driver_nl80211_set_country,
8821         .get_country = wpa_driver_nl80211_get_country,
8822         .set_ap = wpa_driver_nl80211_set_ap,
8823         .set_acl = wpa_driver_nl80211_set_acl,
8824         .if_add = wpa_driver_nl80211_if_add,
8825         .if_remove = driver_nl80211_if_remove,
8826         .send_mlme = driver_nl80211_send_mlme,
8827         .get_hw_feature_data = nl80211_get_hw_feature_data,
8828         .sta_add = wpa_driver_nl80211_sta_add,
8829         .sta_remove = driver_nl80211_sta_remove,
8830         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8831         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8832         .hapd_init = i802_init,
8833         .hapd_deinit = i802_deinit,
8834         .set_wds_sta = i802_set_wds_sta,
8835         .get_seqnum = i802_get_seqnum,
8836         .flush = i802_flush,
8837         .get_inact_sec = i802_get_inact_sec,
8838         .sta_clear_stats = i802_sta_clear_stats,
8839         .set_rts = i802_set_rts,
8840         .set_frag = i802_set_frag,
8841         .set_tx_queue_params = i802_set_tx_queue_params,
8842         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8843         .sta_deauth = i802_sta_deauth,
8844         .sta_disassoc = i802_sta_disassoc,
8845         .read_sta_data = driver_nl80211_read_sta_data,
8846         .set_freq = i802_set_freq,
8847         .send_action = driver_nl80211_send_action,
8848         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8849         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8850         .cancel_remain_on_channel =
8851         wpa_driver_nl80211_cancel_remain_on_channel,
8852         .probe_req_report = driver_nl80211_probe_req_report,
8853         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8854         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8855         .resume = wpa_driver_nl80211_resume,
8856         .signal_monitor = nl80211_signal_monitor,
8857         .signal_poll = nl80211_signal_poll,
8858         .send_frame = nl80211_send_frame,
8859         .set_param = nl80211_set_param,
8860         .get_radio_name = nl80211_get_radio_name,
8861         .add_pmkid = nl80211_add_pmkid,
8862         .remove_pmkid = nl80211_remove_pmkid,
8863         .flush_pmkid = nl80211_flush_pmkid,
8864         .set_rekey_info = nl80211_set_rekey_info,
8865         .poll_client = nl80211_poll_client,
8866         .set_p2p_powersave = nl80211_set_p2p_powersave,
8867         .start_dfs_cac = nl80211_start_radar_detection,
8868         .stop_ap = wpa_driver_nl80211_stop_ap,
8869 #ifdef CONFIG_TDLS
8870         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8871         .tdls_oper = nl80211_tdls_oper,
8872         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8873         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8874 #endif /* CONFIG_TDLS */
8875         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8876         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8877         .get_survey = wpa_driver_nl80211_get_survey,
8878         .status = wpa_driver_nl80211_status,
8879         .switch_channel = nl80211_switch_channel,
8880 #ifdef ANDROID_P2P
8881         .set_noa = wpa_driver_set_p2p_noa,
8882         .get_noa = wpa_driver_get_p2p_noa,
8883         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8884 #endif /* ANDROID_P2P */
8885 #ifdef ANDROID
8886 #ifndef ANDROID_LIB_STUB
8887         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8888 #endif /* !ANDROID_LIB_STUB */
8889 #endif /* ANDROID */
8890         .vendor_cmd = nl80211_vendor_cmd,
8891         .set_qos_map = nl80211_set_qos_map,
8892         .set_wowlan = nl80211_set_wowlan,
8893 #ifdef CONFIG_DRIVER_NL80211_QCA
8894         .roaming = nl80211_roaming,
8895 #endif /* CONFIG_DRIVER_NL80211_QCA */
8896         .set_mac_addr = nl80211_set_mac_addr,
8897 #ifdef CONFIG_MESH
8898         .init_mesh = wpa_driver_nl80211_init_mesh,
8899         .join_mesh = wpa_driver_nl80211_join_mesh,
8900         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8901 #endif /* CONFIG_MESH */
8902         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8903         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8904         .br_port_set_attr = wpa_driver_br_port_set_attr,
8905         .br_set_net_param = wpa_driver_br_set_net_param,
8906         .add_tx_ts = nl80211_add_ts,
8907         .del_tx_ts = nl80211_del_ts,
8908 #ifdef CONFIG_DRIVER_NL80211_QCA
8909         .do_acs = wpa_driver_do_acs,
8910         .set_band = nl80211_set_band,
8911         .get_pref_freq_list = nl80211_get_pref_freq_list,
8912         .set_prob_oper_freq = nl80211_set_prob_oper_freq,
8913 #endif /* CONFIG_DRIVER_NL80211_QCA */
8914 };