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 #define IFIDX_ANY -1
 185
 186 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 187                       int ifidx_reason);
 188 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 189                       int ifidx_reason);
 190 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 191                       int ifidx_reason);
 192
 193 static int nl80211_set_channel(struct i802_bss *bss,
 194                                struct hostapd_freq_params *freq, int set_chan);
 195 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 196                                      int ifindex, int disabled);
 197
 198 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 199                               int reset_mode);
 200
 201 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 202 static int nl80211_set_param(void *priv, const char *param);
 203
 204
 205 /* Converts nl80211_chan_width to a common format */
 206 enum chan_width convert2width(int width)
 207 {
 208         switch (width) {
 209         case NL80211_CHAN_WIDTH_20_NOHT:
 210                 return CHAN_WIDTH_20_NOHT;
 211         case NL80211_CHAN_WIDTH_20:
 212                 return CHAN_WIDTH_20;
 213         case NL80211_CHAN_WIDTH_40:
 214                 return CHAN_WIDTH_40;
 215         case NL80211_CHAN_WIDTH_80:
 216                 return CHAN_WIDTH_80;
 217         case NL80211_CHAN_WIDTH_80P80:
 218                 return CHAN_WIDTH_80P80;
 219         case NL80211_CHAN_WIDTH_160:
 220                 return CHAN_WIDTH_160;
 221         }
 222         return CHAN_WIDTH_UNKNOWN;
 223 }
 224
 225
 226 int is_ap_interface(enum nl80211_iftype nlmode)
 227 {
 228         return nlmode == NL80211_IFTYPE_AP ||
 229                 nlmode == NL80211_IFTYPE_P2P_GO;
 230 }
 231
 232
 233 int is_sta_interface(enum nl80211_iftype nlmode)
 234 {
 235         return nlmode == NL80211_IFTYPE_STATION ||
 236                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 237 }
 238
 239
 240 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 241 {
 242         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 243                 nlmode == NL80211_IFTYPE_P2P_GO;
 244 }
 245
 246
 247 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 248                                   int ifindex)
 249 {
 250         struct i802_bss *bss;
 251
 252         for (bss = drv->first_bss; bss; bss = bss->next) {
 253                 if (bss->ifindex == ifindex)
 254                         return bss;
 255         }
 256
 257         return NULL;
 258 }
 259
 260
 261 static int is_mesh_interface(enum nl80211_iftype nlmode)
 262 {
 263         return nlmode == NL80211_IFTYPE_MESH_POINT;
 264 }
 265
 266
 267 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 268 {
 269         if (drv->associated)
 270                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 271         drv->associated = 0;
 272         os_memset(drv->bssid, 0, ETH_ALEN);
 273 }
 274
 275
 276 /* nl80211 code */
 277 static int ack_handler(struct nl_msg *msg, void *arg)
 278 {
 279         int *err = arg;
 280         *err = 0;
 281         return NL_STOP;
 282 }
 283
 284 static int finish_handler(struct nl_msg *msg, void *arg)
 285 {
 286         int *ret = arg;
 287         *ret = 0;
 288         return NL_SKIP;
 289 }
 290
 291 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 292                          void *arg)
 293 {
 294         int *ret = arg;
 295         *ret = err->error;
 296         return NL_SKIP;
 297 }
 298
 299
 300 static int no_seq_check(struct nl_msg *msg, void *arg)
 301 {
 302         return NL_OK;
 303 }
 304
 305
 306 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 307 {
 308         /*
 309          * Clear nlmsg data, e.g., to make sure key material is not left in
 310          * heap memory for unnecessarily long time.
 311          */
 312         if (msg) {
 313                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 314                 void *data = nlmsg_data(hdr);
 315                 /*
 316                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 317                  * only libnl were to maintain a stable API.. Neither will work
 318                  * with all released versions, so just calculate the length
 319                  * here.
 320                  */
 321                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 322
 323                 os_memset(data, 0, len);
 324         }
 325 }
 326
 327
 328 static int send_and_recv(struct nl80211_global *global,
 329                          struct nl_handle *nl_handle, struct nl_msg *msg,
 330                          int (*valid_handler)(struct nl_msg *, void *),
 331                          void *valid_data)
 332 {
 333         struct nl_cb *cb;
 334         int err = -ENOMEM;
 335
 336         if (!msg)
 337                 return -ENOMEM;
 338
 339         cb = nl_cb_clone(global->nl_cb);
 340         if (!cb)
 341                 goto out;
 342
 343         err = nl_send_auto_complete(nl_handle, msg);
 344         if (err < 0)
 345                 goto out;
 346
 347         err = 1;
 348
 349         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 350         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 351         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 352
 353         if (valid_handler)
 354                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 355                           valid_handler, valid_data);
 356
 357         while (err > 0) {
 358                 int res = nl_recvmsgs(nl_handle, cb);
 359                 if (res < 0) {
 360                         wpa_printf(MSG_INFO,
 361                                    "nl80211: %s->nl_recvmsgs failed: %d",
 362                                    __func__, res);
 363                 }
 364         }
 365  out:
 366         nl_cb_put(cb);
 367         if (!valid_handler && valid_data == (void *) -1)
 368                 nl80211_nlmsg_clear(msg);
 369         nlmsg_free(msg);
 370         return err;
 371 }
 372
 373
 374 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 375                        struct nl_msg *msg,
 376                        int (*valid_handler)(struct nl_msg *, void *),
 377                        void *valid_data)
 378 {
 379         return send_and_recv(drv->global, drv->global->nl, msg,
 380                              valid_handler, valid_data);
 381 }
 382
 383
 384 struct family_data {
 385         const char *group;
 386         int id;
 387 };
 388
 389
 390 static int family_handler(struct nl_msg *msg, void *arg)
 391 {
 392         struct family_data *res = arg;
 393         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 394         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 395         struct nlattr *mcgrp;
 396         int i;
 397
 398         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 399                   genlmsg_attrlen(gnlh, 0), NULL);
 400         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 401                 return NL_SKIP;
 402
 403         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 404                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 405                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 406                           nla_len(mcgrp), NULL);
 407                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 408                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 409                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 410                                res->group,
 411                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 412                         continue;
 413                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 414                 break;
 415         };
 416
 417         return NL_SKIP;
 418 }
 419
 420
 421 static int nl_get_multicast_id(struct nl80211_global *global,
 422                                const char *family, const char *group)
 423 {
 424         struct nl_msg *msg;
 425         int ret;
 426         struct family_data res = { group, -ENOENT };
 427
 428         msg = nlmsg_alloc();
 429         if (!msg)
 430                 return -ENOMEM;
 431         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 432                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 433             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 434                 nlmsg_free(msg);
 435                 return -1;
 436         }
 437
 438         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 439         if (ret == 0)
 440                 ret = res.id;
 441         return ret;
 442 }
 443
 444
 445 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 446                    struct nl_msg *msg, int flags, uint8_t cmd)
 447 {
 448         if (TEST_FAIL())
 449                 return NULL;
 450         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 451                            0, flags, cmd, 0);
 452 }
 453
 454
 455 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 456 {
 457         if (bss->wdev_id_set)
 458                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 459         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 460 }
 461
 462
 463 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 464 {
 465         struct nl_msg *msg;
 466
 467         msg = nlmsg_alloc();
 468         if (!msg)
 469                 return NULL;
 470
 471         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 472             nl80211_set_iface_id(msg, bss) < 0) {
 473                 nlmsg_free(msg);
 474                 return NULL;
 475         }
 476
 477         return msg;
 478 }
 479
 480
 481 static struct nl_msg *
 482 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 483                     int flags, uint8_t cmd)
 484 {
 485         struct nl_msg *msg;
 486
 487         msg = nlmsg_alloc();
 488         if (!msg)
 489                 return NULL;
 490
 491         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 492             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 493                 nlmsg_free(msg);
 494                 return NULL;
 495         }
 496
 497         return msg;
 498 }
 499
 500
 501 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 502                                 uint8_t cmd)
 503 {
 504         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 505 }
 506
 507
 508 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 509 {
 510         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 511 }
 512
 513
 514 struct wiphy_idx_data {
 515         int wiphy_idx;
 516         enum nl80211_iftype nlmode;
 517         u8 *macaddr;
 518 };
 519
 520
 521 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 522 {
 523         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 524         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 525         struct wiphy_idx_data *info = arg;
 526
 527         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 528                   genlmsg_attrlen(gnlh, 0), NULL);
 529
 530         if (tb[NL80211_ATTR_WIPHY])
 531                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 532
 533         if (tb[NL80211_ATTR_IFTYPE])
 534                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 535
 536         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 537                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 538                           ETH_ALEN);
 539
 540         return NL_SKIP;
 541 }
 542
 543
 544 int nl80211_get_wiphy_index(struct i802_bss *bss)
 545 {
 546         struct nl_msg *msg;
 547         struct wiphy_idx_data data = {
 548                 .wiphy_idx = -1,
 549                 .macaddr = NULL,
 550         };
 551
 552         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 553                 return -1;
 554
 555         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 556                 return data.wiphy_idx;
 557         return -1;
 558 }
 559
 560
 561 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 562 {
 563         struct nl_msg *msg;
 564         struct wiphy_idx_data data = {
 565                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 566                 .macaddr = NULL,
 567         };
 568
 569         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 570                 return NL80211_IFTYPE_UNSPECIFIED;
 571
 572         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 573                 return data.nlmode;
 574         return NL80211_IFTYPE_UNSPECIFIED;
 575 }
 576
 577
 578 static int nl80211_get_macaddr(struct i802_bss *bss)
 579 {
 580         struct nl_msg *msg;
 581         struct wiphy_idx_data data = {
 582                 .macaddr = bss->addr,
 583         };
 584
 585         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 586                 return -1;
 587
 588         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 589 }
 590
 591
 592 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 593                                     struct nl80211_wiphy_data *w)
 594 {
 595         struct nl_msg *msg;
 596         int ret;
 597
 598         msg = nlmsg_alloc();
 599         if (!msg)
 600                 return -1;
 601
 602         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 603             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 604                 nlmsg_free(msg);
 605                 return -1;
 606         }
 607
 608         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 609         if (ret) {
 610                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 611                            "failed: ret=%d (%s)",
 612                            ret, strerror(-ret));
 613         }
 614         return ret;
 615 }
 616
 617
 618 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 619 {
 620         struct nl80211_wiphy_data *w = eloop_ctx;
 621         int res;
 622
 623         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 624
 625         res = nl_recvmsgs(handle, w->nl_cb);
 626         if (res < 0) {
 627                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 628                            __func__, res);
 629         }
 630 }
 631
 632
 633 static int process_beacon_event(struct nl_msg *msg, void *arg)
 634 {
 635         struct nl80211_wiphy_data *w = arg;
 636         struct wpa_driver_nl80211_data *drv;
 637         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 638         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 639         union wpa_event_data event;
 640
 641         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 642                   genlmsg_attrlen(gnlh, 0), NULL);
 643
 644         if (gnlh->cmd != NL80211_CMD_FRAME) {
 645                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 646                            gnlh->cmd);
 647                 return NL_SKIP;
 648         }
 649
 650         if (!tb[NL80211_ATTR_FRAME])
 651                 return NL_SKIP;
 652
 653         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 654                          wiphy_list) {
 655                 os_memset(&event, 0, sizeof(event));
 656                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 657                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 658                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 659         }
 660
 661         return NL_SKIP;
 662 }
 663
 664
 665 static struct nl80211_wiphy_data *
 666 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 667 {
 668         static DEFINE_DL_LIST(nl80211_wiphys);
 669         struct nl80211_wiphy_data *w;
 670         int wiphy_idx, found = 0;
 671         struct i802_bss *tmp_bss;
 672
 673         if (bss->wiphy_data != NULL)
 674                 return bss->wiphy_data;
 675
 676         wiphy_idx = nl80211_get_wiphy_index(bss);
 677
 678         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 679                 if (w->wiphy_idx == wiphy_idx)
 680                         goto add;
 681         }
 682
 683         /* alloc new one */
 684         w = os_zalloc(sizeof(*w));
 685         if (w == NULL)
 686                 return NULL;
 687         w->wiphy_idx = wiphy_idx;
 688         dl_list_init(&w->bsss);
 689         dl_list_init(&w->drvs);
 690
 691         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 692         if (!w->nl_cb) {
 693                 os_free(w);
 694                 return NULL;
 695         }
 696         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 697         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 698                   w);
 699
 700         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 701                                          "wiphy beacons");
 702         if (w->nl_beacons == NULL) {
 703                 os_free(w);
 704                 return NULL;
 705         }
 706
 707         if (nl80211_register_beacons(bss->drv, w)) {
 708                 nl_destroy_handles(&w->nl_beacons);
 709                 os_free(w);
 710                 return NULL;
 711         }
 712
 713         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 714
 715         dl_list_add(&nl80211_wiphys, &w->list);
 716
 717 add:
 718         /* drv entry for this bss already there? */
 719         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 720                 if (tmp_bss->drv == bss->drv) {
 721                         found = 1;
 722                         break;
 723                 }
 724         }
 725         /* if not add it */
 726         if (!found)
 727                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 728
 729         dl_list_add(&w->bsss, &bss->wiphy_list);
 730         bss->wiphy_data = w;
 731         return w;
 732 }
 733
 734
 735 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 736 {
 737         struct nl80211_wiphy_data *w = bss->wiphy_data;
 738         struct i802_bss *tmp_bss;
 739         int found = 0;
 740
 741         if (w == NULL)
 742                 return;
 743         bss->wiphy_data = NULL;
 744         dl_list_del(&bss->wiphy_list);
 745
 746         /* still any for this drv present? */
 747         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 748                 if (tmp_bss->drv == bss->drv) {
 749                         found = 1;
 750                         break;
 751                 }
 752         }
 753         /* if not remove it */
 754         if (!found)
 755                 dl_list_del(&bss->drv->wiphy_list);
 756
 757         if (!dl_list_empty(&w->bsss))
 758                 return;
 759
 760         nl80211_destroy_eloop_handle(&w->nl_beacons);
 761
 762         nl_cb_put(w->nl_cb);
 763         dl_list_del(&w->list);
 764         os_free(w);
 765 }
 766
 767
 768 static unsigned int nl80211_get_ifindex(void *priv)
 769 {
 770         struct i802_bss *bss = priv;
 771         struct wpa_driver_nl80211_data *drv = bss->drv;
 772
 773         return drv->ifindex;
 774 }
 775
 776
 777 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 778 {
 779         struct i802_bss *bss = priv;
 780         struct wpa_driver_nl80211_data *drv = bss->drv;
 781         if (!drv->associated)
 782                 return -1;
 783         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 784         return 0;
 785 }
 786
 787
 788 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 789 {
 790         struct i802_bss *bss = priv;
 791         struct wpa_driver_nl80211_data *drv = bss->drv;
 792         if (!drv->associated)
 793                 return -1;
 794         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 795         return drv->ssid_len;
 796 }
 797
 798
 799 static void wpa_driver_nl80211_event_newlink(
 800         struct nl80211_global *global, struct wpa_driver_nl80211_data *drv,
 801         int ifindex, const char *ifname)
 802 {
 803         union wpa_event_data event;
 804
 805         if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 806                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 807                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 808                                    drv->first_bss->ifname);
 809                         return;
 810                 }
 811                 if (!drv->if_removed)
 812                         return;
 813                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 814                            drv->first_bss->ifname);
 815                 drv->if_removed = 0;
 816         }
 817
 818         os_memset(&event, 0, sizeof(event));
 819         event.interface_status.ifindex = ifindex;
 820         os_strlcpy(event.interface_status.ifname, ifname,
 821                    sizeof(event.interface_status.ifname));
 822         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 823         if (drv)
 824                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 825         else
 826                 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS,
 827                                             &event);
 828 }
 829
 830
 831 static void wpa_driver_nl80211_event_dellink(
 832         struct nl80211_global *global, struct wpa_driver_nl80211_data *drv,
 833         int ifindex, const char *ifname)
 834 {
 835         union wpa_event_data event;
 836
 837         if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 838                 if (drv->if_removed) {
 839                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 840                                    ifname);
 841                         return;
 842                 }
 843                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 844                            ifname);
 845                 drv->if_removed = 1;
 846         } else {
 847                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 848                            ifname);
 849         }
 850
 851         os_memset(&event, 0, sizeof(event));
 852         event.interface_status.ifindex = ifindex;
 853         os_strlcpy(event.interface_status.ifname, ifname,
 854                    sizeof(event.interface_status.ifname));
 855         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 856         if (drv)
 857                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 858         else
 859                 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS,
 860                                             &event);
 861 }
 862
 863
 864 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 865                                          u8 *buf, size_t len)
 866 {
 867         int attrlen, rta_len;
 868         struct rtattr *attr;
 869
 870         attrlen = len;
 871         attr = (struct rtattr *) buf;
 872
 873         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 874         while (RTA_OK(attr, attrlen)) {
 875                 if (attr->rta_type == IFLA_IFNAME) {
 876                         if (os_strcmp(((char *) attr) + rta_len,
 877                                       drv->first_bss->ifname) == 0)
 878                                 return 1;
 879                         else
 880                                 break;
 881                 }
 882                 attr = RTA_NEXT(attr, attrlen);
 883         }
 884
 885         return 0;
 886 }
 887
 888
 889 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 890                                           int ifindex, u8 *buf, size_t len)
 891 {
 892         if (drv->ifindex == ifindex)
 893                 return 1;
 894
 895         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 896                 nl80211_check_global(drv->global);
 897                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 898                            "interface");
 899                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 900                 return 1;
 901         }
 902
 903         return 0;
 904 }
 905
 906
 907 static struct wpa_driver_nl80211_data *
 908 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 909 {
 910         struct wpa_driver_nl80211_data *drv;
 911         dl_list_for_each(drv, &global->interfaces,
 912                          struct wpa_driver_nl80211_data, list) {
 913                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 914                     have_ifidx(drv, idx, IFIDX_ANY))
 915                         return drv;
 916         }
 917         return NULL;
 918 }
 919
 920
 921 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 922                                                  struct ifinfomsg *ifi,
 923                                                  u8 *buf, size_t len)
 924 {
 925         struct nl80211_global *global = ctx;
 926         struct wpa_driver_nl80211_data *drv;
 927         int attrlen;
 928         struct rtattr *attr;
 929         u32 brid = 0;
 930         char namebuf[IFNAMSIZ];
 931         char ifname[IFNAMSIZ + 1];
 932         char extra[100], *pos, *end;
 933
 934         extra[0] = '\0';
 935         pos = extra;
 936         end = pos + sizeof(extra);
 937         ifname[0] = '\0';
 938
 939         attrlen = len;
 940         attr = (struct rtattr *) buf;
 941         while (RTA_OK(attr, attrlen)) {
 942                 switch (attr->rta_type) {
 943                 case IFLA_IFNAME:
 944                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 945                                 break;
 946                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 947                         ifname[RTA_PAYLOAD(attr)] = '\0';
 948                         break;
 949                 case IFLA_MASTER:
 950                         brid = nla_get_u32((struct nlattr *) attr);
 951                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 952                         break;
 953                 case IFLA_WIRELESS:
 954                         pos += os_snprintf(pos, end - pos, " wext");
 955                         break;
 956                 case IFLA_OPERSTATE:
 957                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 958                                            nla_get_u32((struct nlattr *) attr));
 959                         break;
 960                 case IFLA_LINKMODE:
 961                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 962                                            nla_get_u32((struct nlattr *) attr));
 963                         break;
 964                 }
 965                 attr = RTA_NEXT(attr, attrlen);
 966         }
 967         extra[sizeof(extra) - 1] = '\0';
 968
 969         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 970                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 971                    ifi->ifi_flags,
 972                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 973                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 974                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 975                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 976
 977         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 978         if (!drv)
 979                 goto event_newlink;
 980
 981         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 982                 namebuf[0] = '\0';
 983                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 984                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) {
 985                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 986                                    "event since interface %s is up", namebuf);
 987                         drv->ignore_if_down_event = 0;
 988                         return;
 989                 }
 990                 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)",
 991                            namebuf, ifname);
 992                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 993                         wpa_printf(MSG_DEBUG,
 994                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 995                                    drv->first_bss->ifname);
 996                 } else if (drv->ignore_if_down_event) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 998                                    "event generated by mode change");
 999                         drv->ignore_if_down_event = 0;
1000                 } else {
1001                         drv->if_disabled = 1;
1002                         wpa_supplicant_event(drv->ctx,
1003                                              EVENT_INTERFACE_DISABLED, NULL);
1004
1005                         /*
1006                          * Try to get drv again, since it may be removed as
1007                          * part of the EVENT_INTERFACE_DISABLED handling for
1008                          * dynamic interfaces
1009                          */
1010                         drv = nl80211_find_drv(global, ifi->ifi_index,
1011                                                buf, len);
1012                         if (!drv)
1013                                 return;
1014                 }
1015         }
1016
1017         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
1018                 if (if_indextoname(ifi->ifi_index, namebuf) &&
1019                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
1020                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1021                                    "event since interface %s is down",
1022                                    namebuf);
1023                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
1024                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1025                                    "event since interface %s does not exist",
1026                                    drv->first_bss->ifname);
1027                 } else if (drv->if_removed) {
1028                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1029                                    "event since interface %s is marked "
1030                                    "removed", drv->first_bss->ifname);
1031                 } else {
1032                         struct i802_bss *bss;
1033                         u8 addr[ETH_ALEN];
1034
1035                         /* Re-read MAC address as it may have changed */
1036                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1037                         if (bss &&
1038                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1039                                                bss->ifname, addr) < 0) {
1040                                 wpa_printf(MSG_DEBUG,
1041                                            "nl80211: %s: failed to re-read MAC address",
1042                                            bss->ifname);
1043                         } else if (bss &&
1044                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1045                                 wpa_printf(MSG_DEBUG,
1046                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1047                                            MACSTR " to " MACSTR,
1048                                            ifi->ifi_index, bss->ifname,
1049                                            MAC2STR(bss->addr),
1050                                            MAC2STR(addr));
1051                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1052                         }
1053
1054                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1055                         drv->if_disabled = 0;
1056                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1057                                              NULL);
1058                 }
1059         }
1060
1061         /*
1062          * Some drivers send the association event before the operup event--in
1063          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1064          * fails. This will hit us when wpa_supplicant does not need to do
1065          * IEEE 802.1X authentication
1066          */
1067         if (drv->operstate == 1 &&
1068             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1069             !(ifi->ifi_flags & IFF_RUNNING)) {
1070                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1071                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1072                                        -1, IF_OPER_UP);
1073         }
1074
1075 event_newlink:
1076         if (ifname[0])
1077                 wpa_driver_nl80211_event_newlink(global, drv, ifi->ifi_index,
1078                                                  ifname);
1079
1080         if (ifi->ifi_family == AF_BRIDGE && brid && drv) {
1081                 struct i802_bss *bss;
1082
1083                 /* device has been added to bridge */
1084                 if (!if_indextoname(brid, namebuf)) {
1085                         wpa_printf(MSG_DEBUG,
1086                                    "nl80211: Could not find bridge ifname for ifindex %u",
1087                                    brid);
1088                         return;
1089                 }
1090                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1091                            brid, namebuf);
1092                 add_ifidx(drv, brid, ifi->ifi_index);
1093
1094                 for (bss = drv->first_bss; bss; bss = bss->next) {
1095                         if (os_strcmp(ifname, bss->ifname) == 0) {
1096                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1097                                 break;
1098                         }
1099                 }
1100         }
1101 }
1102
1103
1104 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1105                                                  struct ifinfomsg *ifi,
1106                                                  u8 *buf, size_t len)
1107 {
1108         struct nl80211_global *global = ctx;
1109         struct wpa_driver_nl80211_data *drv;
1110         int attrlen;
1111         struct rtattr *attr;
1112         u32 brid = 0;
1113         char ifname[IFNAMSIZ + 1];
1114         char extra[100], *pos, *end;
1115
1116         extra[0] = '\0';
1117         pos = extra;
1118         end = pos + sizeof(extra);
1119         ifname[0] = '\0';
1120
1121         attrlen = len;
1122         attr = (struct rtattr *) buf;
1123         while (RTA_OK(attr, attrlen)) {
1124                 switch (attr->rta_type) {
1125                 case IFLA_IFNAME:
1126                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1127                                 break;
1128                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1129                         ifname[RTA_PAYLOAD(attr)] = '\0';
1130                         break;
1131                 case IFLA_MASTER:
1132                         brid = nla_get_u32((struct nlattr *) attr);
1133                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1134                         break;
1135                 case IFLA_OPERSTATE:
1136                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1137                                            nla_get_u32((struct nlattr *) attr));
1138                         break;
1139                 case IFLA_LINKMODE:
1140                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1141                                            nla_get_u32((struct nlattr *) attr));
1142                         break;
1143                 }
1144                 attr = RTA_NEXT(attr, attrlen);
1145         }
1146         extra[sizeof(extra) - 1] = '\0';
1147
1148         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1149                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1150                    ifi->ifi_flags,
1151                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1152                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1153                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1154                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1155
1156         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1157
1158         if (ifi->ifi_family == AF_BRIDGE && brid && drv) {
1159                 /* device has been removed from bridge */
1160                 char namebuf[IFNAMSIZ];
1161
1162                 if (!if_indextoname(brid, namebuf)) {
1163                         wpa_printf(MSG_DEBUG,
1164                                    "nl80211: Could not find bridge ifname for ifindex %u",
1165                                    brid);
1166                 } else {
1167                         wpa_printf(MSG_DEBUG,
1168                                    "nl80211: Remove ifindex %u for bridge %s",
1169                                    brid, namebuf);
1170                 }
1171                 del_ifidx(drv, brid, ifi->ifi_index);
1172         }
1173
1174         if (ifi->ifi_family != AF_BRIDGE || !brid)
1175                 wpa_driver_nl80211_event_dellink(global, drv, ifi->ifi_index,
1176                                                  ifname);
1177 }
1178
1179
1180 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1181 {
1182         struct nl_msg *msg;
1183         int ret;
1184         struct nl80211_bss_info_arg arg;
1185
1186         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1187         os_memset(&arg, 0, sizeof(arg));
1188         arg.drv = drv;
1189         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1190         if (ret == 0) {
1191                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1192                         arg.ibss_freq : arg.assoc_freq;
1193                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1194                            "associated BSS from scan results: %u MHz", freq);
1195                 if (freq)
1196                         drv->assoc_freq = freq;
1197                 return drv->assoc_freq;
1198         }
1199         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1200                    "(%s)", ret, strerror(-ret));
1201         return drv->assoc_freq;
1202 }
1203
1204
1205 static int get_link_signal(struct nl_msg *msg, void *arg)
1206 {
1207         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1208         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1209         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1210         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1211                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1212                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1213                 [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = { .type = NLA_U8 },
1214         };
1215         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1216         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1217                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1218                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1219                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1220                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1221         };
1222         struct wpa_signal_info *sig_change = arg;
1223
1224         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1225                   genlmsg_attrlen(gnlh, 0), NULL);
1226         if (!tb[NL80211_ATTR_STA_INFO] ||
1227             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1228                              tb[NL80211_ATTR_STA_INFO], policy))
1229                 return NL_SKIP;
1230         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1231                 return NL_SKIP;
1232
1233         sig_change->current_signal =
1234                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1235
1236         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1237                 sig_change->avg_signal =
1238                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1239         else
1240                 sig_change->avg_signal = 0;
1241
1242         if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG])
1243                 sig_change->avg_beacon_signal =
1244                         (s8)
1245                         nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]);
1246         else
1247                 sig_change->avg_beacon_signal = 0;
1248
1249         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1250                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1251                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1252                                      rate_policy)) {
1253                         sig_change->current_txrate = 0;
1254                 } else {
1255                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1256                                 sig_change->current_txrate =
1257                                         nla_get_u16(rinfo[
1258                                              NL80211_RATE_INFO_BITRATE]) * 100;
1259                         }
1260                 }
1261         }
1262
1263         return NL_SKIP;
1264 }
1265
1266
1267 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1268                             struct wpa_signal_info *sig)
1269 {
1270         struct nl_msg *msg;
1271
1272         sig->current_signal = -9999;
1273         sig->current_txrate = 0;
1274
1275         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1277                 nlmsg_free(msg);
1278                 return -ENOBUFS;
1279         }
1280
1281         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1282 }
1283
1284
1285 static int get_link_noise(struct nl_msg *msg, void *arg)
1286 {
1287         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1288         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1289         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1290         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1291                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1292                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1293         };
1294         struct wpa_signal_info *sig_change = arg;
1295
1296         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1297                   genlmsg_attrlen(gnlh, 0), NULL);
1298
1299         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1300                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1301                 return NL_SKIP;
1302         }
1303
1304         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1305                              tb[NL80211_ATTR_SURVEY_INFO],
1306                              survey_policy)) {
1307                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1308                            "attributes!");
1309                 return NL_SKIP;
1310         }
1311
1312         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1313                 return NL_SKIP;
1314
1315         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1316             sig_change->frequency)
1317                 return NL_SKIP;
1318
1319         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1320                 return NL_SKIP;
1321
1322         sig_change->current_noise =
1323                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1324
1325         return NL_SKIP;
1326 }
1327
1328
1329 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1330                            struct wpa_signal_info *sig_change)
1331 {
1332         struct nl_msg *msg;
1333
1334         sig_change->current_noise = 9999;
1335         sig_change->frequency = drv->assoc_freq;
1336
1337         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1338         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1339 }
1340
1341
1342 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1343                                              void *handle)
1344 {
1345         struct nl_cb *cb = eloop_ctx;
1346         int res;
1347
1348         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1349
1350         res = nl_recvmsgs(handle, cb);
1351         if (res < 0) {
1352                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1353                            __func__, res);
1354         }
1355 }
1356
1357
1358 /**
1359  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1360  * @priv: driver_nl80211 private data
1361  * @alpha2_arg: country to which to switch to
1362  * Returns: 0 on success, -1 on failure
1363  *
1364  * This asks nl80211 to set the regulatory domain for given
1365  * country ISO / IEC alpha2.
1366  */
1367 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1368 {
1369         struct i802_bss *bss = priv;
1370         struct wpa_driver_nl80211_data *drv = bss->drv;
1371         char alpha2[3];
1372         struct nl_msg *msg;
1373
1374         msg = nlmsg_alloc();
1375         if (!msg)
1376                 return -ENOMEM;
1377
1378         alpha2[0] = alpha2_arg[0];
1379         alpha2[1] = alpha2_arg[1];
1380         alpha2[2] = '\0';
1381
1382         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1383             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1384                 nlmsg_free(msg);
1385                 return -EINVAL;
1386         }
1387         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1388                 return -EINVAL;
1389         return 0;
1390 }
1391
1392
1393 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1394 {
1395         char *alpha2 = arg;
1396         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1397         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1398
1399         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1400                   genlmsg_attrlen(gnlh, 0), NULL);
1401         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1402                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1403                 return NL_SKIP;
1404         }
1405         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1406         return NL_SKIP;
1407 }
1408
1409
1410 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1411 {
1412         struct i802_bss *bss = priv;
1413         struct wpa_driver_nl80211_data *drv = bss->drv;
1414         struct nl_msg *msg;
1415         int ret;
1416
1417         msg = nlmsg_alloc();
1418         if (!msg)
1419                 return -ENOMEM;
1420
1421         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1422         alpha2[0] = '\0';
1423         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1424         if (!alpha2[0])
1425                 ret = -1;
1426
1427         return ret;
1428 }
1429
1430
1431 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1432 {
1433         int ret;
1434
1435         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1436         if (global->nl_cb == NULL) {
1437                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1438                            "callbacks");
1439                 return -1;
1440         }
1441
1442         global->nl = nl_create_handle(global->nl_cb, "nl");
1443         if (global->nl == NULL)
1444                 goto err;
1445
1446         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1447         if (global->nl80211_id < 0) {
1448                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1449                            "found");
1450                 goto err;
1451         }
1452
1453         global->nl_event = nl_create_handle(global->nl_cb, "event");
1454         if (global->nl_event == NULL)
1455                 goto err;
1456
1457         ret = nl_get_multicast_id(global, "nl80211", "scan");
1458         if (ret >= 0)
1459                 ret = nl_socket_add_membership(global->nl_event, ret);
1460         if (ret < 0) {
1461                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1462                            "membership for scan events: %d (%s)",
1463                            ret, strerror(-ret));
1464                 goto err;
1465         }
1466
1467         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1468         if (ret >= 0)
1469                 ret = nl_socket_add_membership(global->nl_event, ret);
1470         if (ret < 0) {
1471                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1472                            "membership for mlme events: %d (%s)",
1473                            ret, strerror(-ret));
1474                 goto err;
1475         }
1476
1477         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1478         if (ret >= 0)
1479                 ret = nl_socket_add_membership(global->nl_event, ret);
1480         if (ret < 0) {
1481                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1482                            "membership for regulatory events: %d (%s)",
1483                            ret, strerror(-ret));
1484                 /* Continue without regulatory events */
1485         }
1486
1487         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1488         if (ret >= 0)
1489                 ret = nl_socket_add_membership(global->nl_event, ret);
1490         if (ret < 0) {
1491                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1492                            "membership for vendor events: %d (%s)",
1493                            ret, strerror(-ret));
1494                 /* Continue without vendor events */
1495         }
1496
1497         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1498                   no_seq_check, NULL);
1499         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1500                   process_global_event, global);
1501
1502         nl80211_register_eloop_read(&global->nl_event,
1503                                     wpa_driver_nl80211_event_receive,
1504                                     global->nl_cb);
1505
1506         return 0;
1507
1508 err:
1509         nl_destroy_handles(&global->nl_event);
1510         nl_destroy_handles(&global->nl);
1511         nl_cb_put(global->nl_cb);
1512         global->nl_cb = NULL;
1513         return -1;
1514 }
1515
1516
1517 static void nl80211_check_global(struct nl80211_global *global)
1518 {
1519         struct nl_handle *handle;
1520         const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL };
1521         int ret;
1522         unsigned int i;
1523
1524         /*
1525          * Try to re-add memberships to handle case of cfg80211 getting reloaded
1526          * and all registration having been cleared.
1527          */
1528         handle = (void *) (((intptr_t) global->nl_event) ^
1529                            ELOOP_SOCKET_INVALID);
1530
1531         for (i = 0; groups[i]; i++) {
1532                 ret = nl_get_multicast_id(global, "nl80211", groups[i]);
1533                 if (ret >= 0)
1534                         ret = nl_socket_add_membership(handle, ret);
1535                 if (ret < 0) {
1536                         wpa_printf(MSG_INFO,
1537                                    "nl80211: Could not re-add multicast membership for %s events: %d (%s)",
1538                                    groups[i], ret, strerror(-ret));
1539                 }
1540         }
1541 }
1542
1543
1544 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1545 {
1546         struct wpa_driver_nl80211_data *drv = ctx;
1547
1548         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1549
1550         /*
1551          * rtnetlink ifdown handler will report interfaces other than the P2P
1552          * Device interface as disabled.
1553          */
1554         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1555                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
1556 }
1557
1558
1559 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1560 {
1561         struct wpa_driver_nl80211_data *drv = ctx;
1562         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1563         if (i802_set_iface_flags(drv->first_bss, 1)) {
1564                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1565                            "after rfkill unblock");
1566                 return;
1567         }
1568
1569         if (is_p2p_net_interface(drv->nlmode))
1570                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
1571
1572         /*
1573          * rtnetlink ifup handler will report interfaces other than the P2P
1574          * Device interface as enabled.
1575          */
1576         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1577                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
1578 }
1579
1580
1581 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1582                                                       void *eloop_ctx,
1583                                                       void *handle)
1584 {
1585         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1586         u8 data[2048];
1587         struct msghdr msg;
1588         struct iovec entry;
1589         u8 control[512];
1590         struct cmsghdr *cmsg;
1591         int res, found_ee = 0, found_wifi = 0, acked = 0;
1592         union wpa_event_data event;
1593
1594         memset(&msg, 0, sizeof(msg));
1595         msg.msg_iov = &entry;
1596         msg.msg_iovlen = 1;
1597         entry.iov_base = data;
1598         entry.iov_len = sizeof(data);
1599         msg.msg_control = &control;
1600         msg.msg_controllen = sizeof(control);
1601
1602         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1603         /* if error or not fitting 802.3 header, return */
1604         if (res < 14)
1605                 return;
1606
1607         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1608         {
1609                 if (cmsg->cmsg_level == SOL_SOCKET &&
1610                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1611                         int *ack;
1612
1613                         found_wifi = 1;
1614                         ack = (void *)CMSG_DATA(cmsg);
1615                         acked = *ack;
1616                 }
1617
1618                 if (cmsg->cmsg_level == SOL_PACKET &&
1619                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1620                         struct sock_extended_err *err =
1621                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1622
1623                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1624                                 found_ee = 1;
1625                 }
1626         }
1627
1628         if (!found_ee || !found_wifi)
1629                 return;
1630
1631         memset(&event, 0, sizeof(event));
1632         event.eapol_tx_status.dst = data;
1633         event.eapol_tx_status.data = data + 14;
1634         event.eapol_tx_status.data_len = res - 14;
1635         event.eapol_tx_status.ack = acked;
1636         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1637 }
1638
1639
1640 static int nl80211_init_bss(struct i802_bss *bss)
1641 {
1642         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1643         if (!bss->nl_cb)
1644                 return -1;
1645
1646         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1647                   no_seq_check, NULL);
1648         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1649                   process_bss_event, bss);
1650
1651         return 0;
1652 }
1653
1654
1655 static void nl80211_destroy_bss(struct i802_bss *bss)
1656 {
1657         nl_cb_put(bss->nl_cb);
1658         bss->nl_cb = NULL;
1659 }
1660
1661
1662 static void
1663 wpa_driver_nl80211_drv_init_rfkill(struct wpa_driver_nl80211_data *drv)
1664 {
1665         struct rfkill_config *rcfg;
1666
1667         if (drv->rfkill)
1668                 return;
1669
1670         rcfg = os_zalloc(sizeof(*rcfg));
1671         if (!rcfg)
1672                 return;
1673
1674         rcfg->ctx = drv;
1675
1676         /* rfkill uses netdev sysfs for initialization. However, P2P Device is
1677          * not associated with a netdev, so use the name of some other interface
1678          * sharing the same wiphy as the P2P Device interface.
1679          *
1680          * Note: This is valid, as a P2P Device interface is always dynamically
1681          * created and is created only once another wpa_s interface was added.
1682          */
1683         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) {
1684                 struct nl80211_global *global = drv->global;
1685                 struct wpa_driver_nl80211_data *tmp1;
1686
1687                 dl_list_for_each(tmp1, &global->interfaces,
1688                                  struct wpa_driver_nl80211_data, list) {
1689                         if (drv == tmp1 || drv->wiphy_idx != tmp1->wiphy_idx ||
1690                             !tmp1->rfkill)
1691                                 continue;
1692
1693                         wpa_printf(MSG_DEBUG,
1694                                    "nl80211: Use (%s) to initialize P2P Device rfkill",
1695                                    tmp1->first_bss->ifname);
1696                         os_strlcpy(rcfg->ifname, tmp1->first_bss->ifname,
1697                                    sizeof(rcfg->ifname));
1698                         break;
1699                 }
1700         } else {
1701                 os_strlcpy(rcfg->ifname, drv->first_bss->ifname,
1702                            sizeof(rcfg->ifname));
1703         }
1704
1705         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1706         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1707         drv->rfkill = rfkill_init(rcfg);
1708         if (!drv->rfkill) {
1709                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1710                 os_free(rcfg);
1711         }
1712 }
1713
1714
1715 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1716                                           void *global_priv, int hostapd,
1717                                           const u8 *set_addr,
1718                                           const char *driver_params)
1719 {
1720         struct wpa_driver_nl80211_data *drv;
1721         struct i802_bss *bss;
1722
1723         if (global_priv == NULL)
1724                 return NULL;
1725         drv = os_zalloc(sizeof(*drv));
1726         if (drv == NULL)
1727                 return NULL;
1728         drv->global = global_priv;
1729         drv->ctx = ctx;
1730         drv->hostapd = !!hostapd;
1731         drv->eapol_sock = -1;
1732
1733         /*
1734          * There is no driver capability flag for this, so assume it is
1735          * supported and disable this on first attempt to use if the driver
1736          * rejects the command due to missing support.
1737          */
1738         drv->set_rekey_offload = 1;
1739
1740         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1741         drv->if_indices = drv->default_if_indices;
1742         drv->if_indices_reason = drv->default_if_indices_reason;
1743
1744         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1745         if (!drv->first_bss) {
1746                 os_free(drv);
1747                 return NULL;
1748         }
1749         bss = drv->first_bss;
1750         bss->drv = drv;
1751         bss->ctx = ctx;
1752
1753         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1754         drv->monitor_ifidx = -1;
1755         drv->monitor_sock = -1;
1756         drv->eapol_tx_sock = -1;
1757         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1758
1759         if (nl80211_init_bss(bss))
1760                 goto failed;
1761
1762         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1763                 goto failed;
1764
1765         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1766         if (drv->eapol_tx_sock < 0)
1767                 goto failed;
1768
1769         if (drv->data_tx_status) {
1770                 int enabled = 1;
1771
1772                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1773                                &enabled, sizeof(enabled)) < 0) {
1774                         wpa_printf(MSG_DEBUG,
1775                                 "nl80211: wifi status sockopt failed\n");
1776                         drv->data_tx_status = 0;
1777                         if (!drv->use_monitor)
1778                                 drv->capa.flags &=
1779                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1780                 } else {
1781                         eloop_register_read_sock(drv->eapol_tx_sock,
1782                                 wpa_driver_nl80211_handle_eapol_tx_status,
1783                                 drv, NULL);
1784                 }
1785         }
1786
1787         if (drv->global) {
1788                 nl80211_check_global(drv->global);
1789                 dl_list_add(&drv->global->interfaces, &drv->list);
1790                 drv->in_interface_list = 1;
1791         }
1792
1793         return bss;
1794
1795 failed:
1796         wpa_driver_nl80211_deinit(bss);
1797         return NULL;
1798 }
1799
1800
1801 /**
1802  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1803  * @ctx: context to be used when calling wpa_supplicant functions,
1804  * e.g., wpa_supplicant_event()
1805  * @ifname: interface name, e.g., wlan0
1806  * @global_priv: private driver global data from global_init()
1807  * Returns: Pointer to private data, %NULL on failure
1808  */
1809 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1810                                       void *global_priv)
1811 {
1812         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1813                                            NULL);
1814 }
1815
1816
1817 static int nl80211_register_frame(struct i802_bss *bss,
1818                                   struct nl_handle *nl_handle,
1819                                   u16 type, const u8 *match, size_t match_len)
1820 {
1821         struct wpa_driver_nl80211_data *drv = bss->drv;
1822         struct nl_msg *msg;
1823         int ret;
1824         char buf[30];
1825
1826         buf[0] = '\0';
1827         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1828         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1829                    type, fc2str(type), nl_handle, buf);
1830
1831         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1832             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1833             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1834                 nlmsg_free(msg);
1835                 return -1;
1836         }
1837
1838         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1839         if (ret) {
1840                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1841                            "failed (type=%u): ret=%d (%s)",
1842                            type, ret, strerror(-ret));
1843                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1844                             match, match_len);
1845         }
1846         return ret;
1847 }
1848
1849
1850 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1851 {
1852         if (bss->nl_mgmt) {
1853                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1854                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1855                 return -1;
1856         }
1857
1858         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1859         if (bss->nl_mgmt == NULL)
1860                 return -1;
1861
1862         return 0;
1863 }
1864
1865
1866 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1867 {
1868         nl80211_register_eloop_read(&bss->nl_mgmt,
1869                                     wpa_driver_nl80211_event_receive,
1870                                     bss->nl_cb);
1871 }
1872
1873
1874 static int nl80211_register_action_frame(struct i802_bss *bss,
1875                                          const u8 *match, size_t match_len)
1876 {
1877         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1878         return nl80211_register_frame(bss, bss->nl_mgmt,
1879                                       type, match, match_len);
1880 }
1881
1882
1883 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1884 {
1885         struct wpa_driver_nl80211_data *drv = bss->drv;
1886         int ret = 0;
1887
1888         if (nl80211_alloc_mgmt_handle(bss))
1889                 return -1;
1890         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1891                    "handle %p", bss->nl_mgmt);
1892
1893         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1894                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1895
1896                 /* register for any AUTH message */
1897                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1898         }
1899
1900 #ifdef CONFIG_INTERWORKING
1901         /* QoS Map Configure */
1902         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1903                 ret = -1;
1904 #endif /* CONFIG_INTERWORKING */
1905 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1906         /* GAS Initial Request */
1907         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1908                 ret = -1;
1909         /* GAS Initial Response */
1910         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1911                 ret = -1;
1912         /* GAS Comeback Request */
1913         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1914                 ret = -1;
1915         /* GAS Comeback Response */
1916         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1917                 ret = -1;
1918         /* Protected GAS Initial Request */
1919         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1920                 ret = -1;
1921         /* Protected GAS Initial Response */
1922         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1923                 ret = -1;
1924         /* Protected GAS Comeback Request */
1925         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1926                 ret = -1;
1927         /* Protected GAS Comeback Response */
1928         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1929                 ret = -1;
1930 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1931 #ifdef CONFIG_P2P
1932         /* P2P Public Action */
1933         if (nl80211_register_action_frame(bss,
1934                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1935                                           6) < 0)
1936                 ret = -1;
1937         /* P2P Action */
1938         if (nl80211_register_action_frame(bss,
1939                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1940                                           5) < 0)
1941                 ret = -1;
1942 #endif /* CONFIG_P2P */
1943 #ifdef CONFIG_IEEE80211W
1944         /* SA Query Response */
1945         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1946                 ret = -1;
1947 #endif /* CONFIG_IEEE80211W */
1948 #ifdef CONFIG_TDLS
1949         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1950                 /* TDLS Discovery Response */
1951                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1952                     0)
1953                         ret = -1;
1954         }
1955 #endif /* CONFIG_TDLS */
1956 #ifdef CONFIG_FST
1957         /* FST Action frames */
1958         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
1959                 ret = -1;
1960 #endif /* CONFIG_FST */
1961
1962         /* FT Action frames */
1963         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1964                 ret = -1;
1965         else
1966                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1967                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1968
1969         /* WNM - BSS Transition Management Request */
1970         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1971                 ret = -1;
1972         /* WNM-Sleep Mode Response */
1973         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1974                 ret = -1;
1975
1976 #ifdef CONFIG_HS20
1977         /* WNM-Notification */
1978         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1979                 ret = -1;
1980 #endif /* CONFIG_HS20 */
1981
1982         /* WMM-AC ADDTS Response */
1983         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1984                 ret = -1;
1985
1986         /* WMM-AC DELTS */
1987         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1988                 ret = -1;
1989
1990         /* Radio Measurement - Neighbor Report Response */
1991         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1992                 ret = -1;
1993
1994         /* Radio Measurement - Radio Measurement Request */
1995         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x00", 2) < 0)
1996                 ret = -1;
1997
1998         /* Radio Measurement - Link Measurement Request */
1999         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
2000             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
2001                 ret = -1;
2002
2003         nl80211_mgmt_handle_register_eloop(bss);
2004
2005         return ret;
2006 }
2007
2008
2009 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
2010 {
2011         int ret = 0;
2012
2013         if (nl80211_alloc_mgmt_handle(bss))
2014                 return -1;
2015
2016         wpa_printf(MSG_DEBUG,
2017                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
2018                    bss->nl_mgmt);
2019
2020         /* Auth frames for mesh SAE */
2021         if (nl80211_register_frame(bss, bss->nl_mgmt,
2022                                    (WLAN_FC_TYPE_MGMT << 2) |
2023                                    (WLAN_FC_STYPE_AUTH << 4),
2024                                    NULL, 0) < 0)
2025                 ret = -1;
2026
2027         /* Mesh peering open */
2028         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
2029                 ret = -1;
2030         /* Mesh peering confirm */
2031         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
2032                 ret = -1;
2033         /* Mesh peering close */
2034         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
2035                 ret = -1;
2036
2037         nl80211_mgmt_handle_register_eloop(bss);
2038
2039         return ret;
2040 }
2041
2042
2043 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2044 {
2045         struct nl_msg *msg;
2046         int ret;
2047
2048         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
2049         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
2050         if (ret) {
2051                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2052                            "failed: ret=%d (%s)",
2053                            ret, strerror(-ret));
2054         }
2055         return ret;
2056 }
2057
2058
2059 static int nl80211_action_subscribe_ap(struct i802_bss *bss)
2060 {
2061         int ret = 0;
2062
2063         /* Public Action frames */
2064         if (nl80211_register_action_frame(bss, (u8 *) "\x04", 1) < 0)
2065                 ret = -1;
2066         /* RRM Measurement Report */
2067         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x01", 2) < 0)
2068                 ret = -1;
2069         /* RRM Neighbor Report Request */
2070         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x04", 2) < 0)
2071                 ret = -1;
2072         /* FT Action frames */
2073         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
2074                 ret = -1;
2075 #ifdef CONFIG_IEEE80211W
2076         /* SA Query */
2077         if (nl80211_register_action_frame(bss, (u8 *) "\x08", 1) < 0)
2078                 ret = -1;
2079 #endif /* CONFIG_IEEE80211W */
2080         /* Protected Dual of Public Action */
2081         if (nl80211_register_action_frame(bss, (u8 *) "\x09", 1) < 0)
2082                 ret = -1;
2083         /* WNM */
2084         if (nl80211_register_action_frame(bss, (u8 *) "\x0a", 1) < 0)
2085                 ret = -1;
2086         /* WMM */
2087         if (nl80211_register_action_frame(bss, (u8 *) "\x11", 1) < 0)
2088                 ret = -1;
2089 #ifdef CONFIG_FST
2090         /* FST Action frames */
2091         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
2092                 ret = -1;
2093 #endif /* CONFIG_FST */
2094         /* Vendor-specific */
2095         if (nl80211_register_action_frame(bss, (u8 *) "\x7f", 1) < 0)
2096                 ret = -1;
2097
2098         return ret;
2099 }
2100
2101
2102 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2103 {
2104         static const int stypes[] = {
2105                 WLAN_FC_STYPE_AUTH,
2106                 WLAN_FC_STYPE_ASSOC_REQ,
2107                 WLAN_FC_STYPE_REASSOC_REQ,
2108                 WLAN_FC_STYPE_DISASSOC,
2109                 WLAN_FC_STYPE_DEAUTH,
2110                 WLAN_FC_STYPE_PROBE_REQ,
2111 /* Beacon doesn't work as mac80211 doesn't currently allow
2112  * it, but it wouldn't really be the right thing anyway as
2113  * it isn't per interface ... maybe just dump the scan
2114  * results periodically for OLBC?
2115  */
2116                 /* WLAN_FC_STYPE_BEACON, */
2117         };
2118         unsigned int i;
2119
2120         if (nl80211_alloc_mgmt_handle(bss))
2121                 return -1;
2122         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2123                    "handle %p", bss->nl_mgmt);
2124
2125         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2126                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2127                                            (WLAN_FC_TYPE_MGMT << 2) |
2128                                            (stypes[i] << 4),
2129                                            NULL, 0) < 0) {
2130                         goto out_err;
2131                 }
2132         }
2133
2134         if (nl80211_action_subscribe_ap(bss))
2135                 goto out_err;
2136
2137         if (nl80211_register_spurious_class3(bss))
2138                 goto out_err;
2139
2140         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2141                 goto out_err;
2142
2143         nl80211_mgmt_handle_register_eloop(bss);
2144         return 0;
2145
2146 out_err:
2147         nl_destroy_handles(&bss->nl_mgmt);
2148         return -1;
2149 }
2150
2151
2152 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2153 {
2154         if (nl80211_alloc_mgmt_handle(bss))
2155                 return -1;
2156         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2157                    "handle %p (device SME)", bss->nl_mgmt);
2158
2159         if (nl80211_action_subscribe_ap(bss))
2160                 goto out_err;
2161
2162         nl80211_mgmt_handle_register_eloop(bss);
2163         return 0;
2164
2165 out_err:
2166         nl_destroy_handles(&bss->nl_mgmt);
2167         return -1;
2168 }
2169
2170
2171 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2172 {
2173         if (bss->nl_mgmt == NULL)
2174                 return;
2175         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2176                    "(%s)", bss->nl_mgmt, reason);
2177         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2178
2179         nl80211_put_wiphy_data_ap(bss);
2180 }
2181
2182
2183 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2184 {
2185         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2186 }
2187
2188
2189 static void nl80211_del_p2pdev(struct i802_bss *bss)
2190 {
2191         struct nl_msg *msg;
2192         int ret;
2193
2194         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2195         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2196
2197         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2198                    bss->ifname, (long long unsigned int) bss->wdev_id,
2199                    strerror(-ret));
2200 }
2201
2202
2203 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2204 {
2205         struct nl_msg *msg;
2206         int ret;
2207
2208         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2209                               NL80211_CMD_STOP_P2P_DEVICE);
2210         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2211
2212         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2213                    start ? "Start" : "Stop",
2214                    bss->ifname, (long long unsigned int) bss->wdev_id,
2215                    strerror(-ret));
2216         return ret;
2217 }
2218
2219
2220 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2221 {
2222         enum nl80211_iftype nlmode;
2223
2224         nlmode = nl80211_get_ifmode(bss);
2225         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2226                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2227                                              bss->ifname, up);
2228         }
2229
2230         /* P2P Device has start/stop which is equivalent */
2231         return nl80211_set_p2pdev(bss, up);
2232 }
2233
2234
2235 #ifdef CONFIG_TESTING_OPTIONS
2236 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2237 {
2238         /* struct wpa_driver_nl80211_data *drv = arg; */
2239         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2240         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2241
2242
2243         wpa_printf(MSG_DEBUG,
2244                    "nl80211: QCA vendor test command response received");
2245
2246         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2247                   genlmsg_attrlen(gnlh, 0), NULL);
2248         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2249                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2250                 return NL_SKIP;
2251         }
2252
2253         wpa_hexdump(MSG_DEBUG,
2254                     "nl80211: Received QCA vendor test command response",
2255                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2256                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2257
2258         return NL_SKIP;
2259 }
2260 #endif /* CONFIG_TESTING_OPTIONS */
2261
2262
2263 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2264 {
2265 #ifdef CONFIG_TESTING_OPTIONS
2266         struct nl_msg *msg;
2267         struct nlattr *params;
2268         int ret;
2269
2270         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2271             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2272             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2273                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2274             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2275             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2276                 nlmsg_free(msg);
2277                 return;
2278         }
2279         nla_nest_end(msg, params);
2280
2281         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2282         wpa_printf(MSG_DEBUG,
2283                    "nl80211: QCA vendor test command returned %d (%s)",
2284                    ret, strerror(-ret));
2285 #endif /* CONFIG_TESTING_OPTIONS */
2286 }
2287
2288
2289 static int
2290 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2291                                    const u8 *set_addr, int first,
2292                                    const char *driver_params)
2293 {
2294         struct i802_bss *bss = drv->first_bss;
2295         int send_rfkill_event = 0;
2296         enum nl80211_iftype nlmode;
2297
2298         drv->ifindex = if_nametoindex(bss->ifname);
2299         bss->ifindex = drv->ifindex;
2300         bss->wdev_id = drv->global->if_add_wdevid;
2301         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2302
2303         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2304         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2305         drv->global->if_add_wdevid_set = 0;
2306
2307         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2308                 bss->static_ap = 1;
2309
2310         if (first &&
2311             nl80211_get_ifmode(bss) != NL80211_IFTYPE_P2P_DEVICE &&
2312             linux_iface_up(drv->global->ioctl_sock, bss->ifname) > 0)
2313                 drv->start_iface_up = 1;
2314
2315         if (wpa_driver_nl80211_capa(drv))
2316                 return -1;
2317
2318         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2319                 return -1;
2320
2321         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2322                    bss->ifname, drv->phyname);
2323
2324         if (set_addr &&
2325             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2326              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2327                                 set_addr)))
2328                 return -1;
2329
2330         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2331                 drv->start_mode_ap = 1;
2332
2333         if (drv->hostapd || bss->static_ap)
2334                 nlmode = NL80211_IFTYPE_AP;
2335         else if (bss->if_dynamic)
2336                 nlmode = nl80211_get_ifmode(bss);
2337         else
2338                 nlmode = NL80211_IFTYPE_STATION;
2339
2340         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2341                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2342                 return -1;
2343         }
2344
2345         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2346                 nl80211_get_macaddr(bss);
2347
2348         wpa_driver_nl80211_drv_init_rfkill(drv);
2349
2350         if (!rfkill_is_blocked(drv->rfkill)) {
2351                 int ret = i802_set_iface_flags(bss, 1);
2352                 if (ret) {
2353                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2354                                    "interface '%s' UP", bss->ifname);
2355                         return ret;
2356                 }
2357
2358                 if (is_p2p_net_interface(nlmode))
2359                         nl80211_disable_11b_rates(bss->drv,
2360                                                   bss->drv->ifindex, 1);
2361
2362                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2363                         return ret;
2364         } else {
2365                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2366                            "interface '%s' due to rfkill", bss->ifname);
2367                 if (nlmode != NL80211_IFTYPE_P2P_DEVICE)
2368                         drv->if_disabled = 1;
2369
2370                 send_rfkill_event = 1;
2371         }
2372
2373         if (!drv->hostapd && nlmode != NL80211_IFTYPE_P2P_DEVICE)
2374                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2375                                        1, IF_OPER_DORMANT);
2376
2377         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2378                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2379                                        bss->addr))
2380                         return -1;
2381                 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2382         }
2383
2384         if (send_rfkill_event) {
2385                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2386                                        drv, drv->ctx);
2387         }
2388
2389         if (drv->vendor_cmd_test_avail)
2390                 qca_vendor_test(drv);
2391
2392         return 0;
2393 }
2394
2395
2396 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2397 {
2398         struct nl_msg *msg;
2399
2400         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2401                    drv->ifindex);
2402         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2403         return send_and_recv_msgs(drv, msg, NULL, NULL);
2404 }
2405
2406
2407 /**
2408  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2409  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2410  *
2411  * Shut down driver interface and processing of driver events. Free
2412  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2413  */
2414 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2415 {
2416         struct wpa_driver_nl80211_data *drv = bss->drv;
2417         unsigned int i;
2418
2419         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2420                    bss->ifname, drv->disabled_11b_rates);
2421
2422         bss->in_deinit = 1;
2423         if (drv->data_tx_status)
2424                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2425         if (drv->eapol_tx_sock >= 0)
2426                 close(drv->eapol_tx_sock);
2427
2428         if (bss->nl_preq)
2429                 wpa_driver_nl80211_probe_req_report(bss, 0);
2430         if (bss->added_if_into_bridge) {
2431                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2432                                     bss->ifname) < 0)
2433                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2434                                    "interface %s from bridge %s: %s",
2435                                    bss->ifname, bss->brname, strerror(errno));
2436                 if (drv->rtnl_sk)
2437                         nl80211_handle_destroy(drv->rtnl_sk);
2438         }
2439         if (bss->added_bridge) {
2440                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2441                                           0) < 0)
2442                         wpa_printf(MSG_INFO,
2443                                    "nl80211: Could not set bridge %s down",
2444                                    bss->brname);
2445                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2446                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2447                                    "bridge %s: %s",
2448                                    bss->brname, strerror(errno));
2449         }
2450
2451         nl80211_remove_monitor_interface(drv);
2452
2453         if (is_ap_interface(drv->nlmode))
2454                 wpa_driver_nl80211_del_beacon(drv);
2455
2456         if (drv->eapol_sock >= 0) {
2457                 eloop_unregister_read_sock(drv->eapol_sock);
2458                 close(drv->eapol_sock);
2459         }
2460
2461         if (drv->if_indices != drv->default_if_indices)
2462                 os_free(drv->if_indices);
2463
2464         if (drv->if_indices_reason != drv->default_if_indices_reason)
2465                 os_free(drv->if_indices_reason);
2466
2467         if (drv->disabled_11b_rates)
2468                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2469
2470         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2471                                IF_OPER_UP);
2472         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2473         rfkill_deinit(drv->rfkill);
2474
2475         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2476
2477         if (!drv->start_iface_up)
2478                 (void) i802_set_iface_flags(bss, 0);
2479
2480         if (drv->addr_changed) {
2481                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2482                                           0) < 0) {
2483                         wpa_printf(MSG_DEBUG,
2484                                    "nl80211: Could not set interface down to restore permanent MAC address");
2485                 }
2486                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2487                                        drv->perm_addr) < 0) {
2488                         wpa_printf(MSG_DEBUG,
2489                                    "nl80211: Could not restore permanent MAC address");
2490                 }
2491         }
2492
2493         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2494                 if (!drv->hostapd || !drv->start_mode_ap)
2495                         wpa_driver_nl80211_set_mode(bss,
2496                                                     NL80211_IFTYPE_STATION);
2497                 nl80211_mgmt_unsubscribe(bss, "deinit");
2498         } else {
2499                 nl80211_mgmt_unsubscribe(bss, "deinit");
2500                 nl80211_del_p2pdev(bss);
2501         }
2502
2503         nl80211_destroy_bss(drv->first_bss);
2504
2505         os_free(drv->filter_ssids);
2506
2507         os_free(drv->auth_ie);
2508
2509         if (drv->in_interface_list)
2510                 dl_list_del(&drv->list);
2511
2512         os_free(drv->extended_capa);
2513         os_free(drv->extended_capa_mask);
2514         for (i = 0; i < drv->num_iface_ext_capa; i++) {
2515                 os_free(drv->iface_ext_capa[i].ext_capa);
2516                 os_free(drv->iface_ext_capa[i].ext_capa_mask);
2517         }
2518         os_free(drv->first_bss);
2519         os_free(drv);
2520 }
2521
2522
2523 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2524 {
2525         switch (alg) {
2526         case WPA_ALG_WEP:
2527                 if (key_len == 5)
2528                         return WLAN_CIPHER_SUITE_WEP40;
2529                 return WLAN_CIPHER_SUITE_WEP104;
2530         case WPA_ALG_TKIP:
2531                 return WLAN_CIPHER_SUITE_TKIP;
2532         case WPA_ALG_CCMP:
2533                 return WLAN_CIPHER_SUITE_CCMP;
2534         case WPA_ALG_GCMP:
2535                 return WLAN_CIPHER_SUITE_GCMP;
2536         case WPA_ALG_CCMP_256:
2537                 return WLAN_CIPHER_SUITE_CCMP_256;
2538         case WPA_ALG_GCMP_256:
2539                 return WLAN_CIPHER_SUITE_GCMP_256;
2540         case WPA_ALG_IGTK:
2541                 return WLAN_CIPHER_SUITE_AES_CMAC;
2542         case WPA_ALG_BIP_GMAC_128:
2543                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2544         case WPA_ALG_BIP_GMAC_256:
2545                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2546         case WPA_ALG_BIP_CMAC_256:
2547                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2548         case WPA_ALG_SMS4:
2549                 return WLAN_CIPHER_SUITE_SMS4;
2550         case WPA_ALG_KRK:
2551                 return WLAN_CIPHER_SUITE_KRK;
2552         case WPA_ALG_NONE:
2553         case WPA_ALG_PMK:
2554                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2555                            alg);
2556                 return 0;
2557         }
2558
2559         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2560                    alg);
2561         return 0;
2562 }
2563
2564
2565 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2566 {
2567         switch (cipher) {
2568         case WPA_CIPHER_CCMP_256:
2569                 return WLAN_CIPHER_SUITE_CCMP_256;
2570         case WPA_CIPHER_GCMP_256:
2571                 return WLAN_CIPHER_SUITE_GCMP_256;
2572         case WPA_CIPHER_CCMP:
2573                 return WLAN_CIPHER_SUITE_CCMP;
2574         case WPA_CIPHER_GCMP:
2575                 return WLAN_CIPHER_SUITE_GCMP;
2576         case WPA_CIPHER_TKIP:
2577                 return WLAN_CIPHER_SUITE_TKIP;
2578         case WPA_CIPHER_WEP104:
2579                 return WLAN_CIPHER_SUITE_WEP104;
2580         case WPA_CIPHER_WEP40:
2581                 return WLAN_CIPHER_SUITE_WEP40;
2582         case WPA_CIPHER_GTK_NOT_USED:
2583                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2584         }
2585
2586         return 0;
2587 }
2588
2589
2590 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2591                                        int max_suites)
2592 {
2593         int num_suites = 0;
2594
2595         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2596                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2597         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2598                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2599         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2600                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2601         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2602                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2603         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2604                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2605         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2606                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2607         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2608                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2609
2610         return num_suites;
2611 }
2612
2613
2614 #ifdef CONFIG_DRIVER_NL80211_QCA
2615 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2616                                   const u8 *key, size_t key_len)
2617 {
2618         struct nl_msg *msg;
2619         int ret;
2620
2621         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2622                 return 0;
2623
2624         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2625             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2626             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2627                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2628             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2629                 nl80211_nlmsg_clear(msg);
2630                 nlmsg_free(msg);
2631                 return -1;
2632         }
2633         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2634         if (ret) {
2635                 wpa_printf(MSG_DEBUG,
2636                            "nl80211: Key management set key failed: ret=%d (%s)",
2637                            ret, strerror(-ret));
2638         }
2639
2640         return ret;
2641 }
2642 #endif /* CONFIG_DRIVER_NL80211_QCA */
2643
2644
2645 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2646                                       enum wpa_alg alg, const u8 *addr,
2647                                       int key_idx, int set_tx,
2648                                       const u8 *seq, size_t seq_len,
2649                                       const u8 *key, size_t key_len)
2650 {
2651         struct wpa_driver_nl80211_data *drv = bss->drv;
2652         int ifindex;
2653         struct nl_msg *msg = NULL;
2654         int ret;
2655         int tdls = 0;
2656
2657         /* Ignore for P2P Device */
2658         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2659                 return 0;
2660
2661         ifindex = if_nametoindex(ifname);
2662         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2663                    "set_tx=%d seq_len=%lu key_len=%lu",
2664                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2665                    (unsigned long) seq_len, (unsigned long) key_len);
2666 #ifdef CONFIG_TDLS
2667         if (key_idx == -1) {
2668                 key_idx = 0;
2669                 tdls = 1;
2670         }
2671 #endif /* CONFIG_TDLS */
2672
2673 #ifdef CONFIG_DRIVER_NL80211_QCA
2674         if (alg == WPA_ALG_PMK &&
2675             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2676                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2677                            __func__);
2678                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2679                 return ret;
2680         }
2681 #endif /* CONFIG_DRIVER_NL80211_QCA */
2682
2683         if (alg == WPA_ALG_NONE) {
2684                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2685                 if (!msg)
2686                         return -ENOBUFS;
2687         } else {
2688                 u32 suite;
2689
2690                 suite = wpa_alg_to_cipher_suite(alg, key_len);
2691                 if (!suite)
2692                         goto fail;
2693                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2694                 if (!msg ||
2695                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2696                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER, suite))
2697                         goto fail;
2698                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2699         }
2700
2701         if (seq && seq_len) {
2702                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2703                         goto fail;
2704                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2705         }
2706
2707         if (addr && !is_broadcast_ether_addr(addr)) {
2708                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2709                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2710                         goto fail;
2711
2712                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2713                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2714                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2715                                         NL80211_KEYTYPE_GROUP))
2716                                 goto fail;
2717                 }
2718         } else if (addr && is_broadcast_ether_addr(addr)) {
2719                 struct nlattr *types;
2720
2721                 wpa_printf(MSG_DEBUG, "   broadcast key");
2722
2723                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2724                 if (!types ||
2725                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2726                         goto fail;
2727                 nla_nest_end(msg, types);
2728         }
2729         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2730                 goto fail;
2731
2732         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2733         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2734                 ret = 0;
2735         if (ret)
2736                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2737                            ret, strerror(-ret));
2738
2739         /*
2740          * If we failed or don't need to set the default TX key (below),
2741          * we're done here.
2742          */
2743         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2744                 return ret;
2745         if (is_ap_interface(drv->nlmode) && addr &&
2746             !is_broadcast_ether_addr(addr))
2747                 return ret;
2748
2749         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2750         if (!msg ||
2751             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2752             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2753                                alg == WPA_ALG_BIP_GMAC_128 ||
2754                                alg == WPA_ALG_BIP_GMAC_256 ||
2755                                alg == WPA_ALG_BIP_CMAC_256) ?
2756                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2757                          NL80211_ATTR_KEY_DEFAULT))
2758                 goto fail;
2759         if (addr && is_broadcast_ether_addr(addr)) {
2760                 struct nlattr *types;
2761
2762                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2763                 if (!types ||
2764                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2765                         goto fail;
2766                 nla_nest_end(msg, types);
2767         } else if (addr) {
2768                 struct nlattr *types;
2769
2770                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2771                 if (!types ||
2772                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2773                         goto fail;
2774                 nla_nest_end(msg, types);
2775         }
2776
2777         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2778         if (ret == -ENOENT)
2779                 ret = 0;
2780         if (ret)
2781                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2782                            "err=%d %s)", ret, strerror(-ret));
2783         return ret;
2784
2785 fail:
2786         nl80211_nlmsg_clear(msg);
2787         nlmsg_free(msg);
2788         return -ENOBUFS;
2789 }
2790
2791
2792 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2793                       int key_idx, int defkey,
2794                       const u8 *seq, size_t seq_len,
2795                       const u8 *key, size_t key_len)
2796 {
2797         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2798         u32 suite;
2799
2800         if (!key_attr)
2801                 return -1;
2802
2803         suite = wpa_alg_to_cipher_suite(alg, key_len);
2804         if (!suite)
2805                 return -1;
2806
2807         if (defkey && alg == WPA_ALG_IGTK) {
2808                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2809                         return -1;
2810         } else if (defkey) {
2811                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2812                         return -1;
2813         }
2814
2815         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2816             nla_put_u32(msg, NL80211_KEY_CIPHER, suite) ||
2817             (seq && seq_len &&
2818              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2819             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2820                 return -1;
2821
2822         nla_nest_end(msg, key_attr);
2823
2824         return 0;
2825 }
2826
2827
2828 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2829                                  struct nl_msg *msg)
2830 {
2831         int i, privacy = 0;
2832         struct nlattr *nl_keys, *nl_key;
2833
2834         for (i = 0; i < 4; i++) {
2835                 if (!params->wep_key[i])
2836                         continue;
2837                 privacy = 1;
2838                 break;
2839         }
2840         if (params->wps == WPS_MODE_PRIVACY)
2841                 privacy = 1;
2842         if (params->pairwise_suite &&
2843             params->pairwise_suite != WPA_CIPHER_NONE)
2844                 privacy = 1;
2845
2846         if (!privacy)
2847                 return 0;
2848
2849         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2850                 return -ENOBUFS;
2851
2852         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2853         if (!nl_keys)
2854                 return -ENOBUFS;
2855
2856         for (i = 0; i < 4; i++) {
2857                 if (!params->wep_key[i])
2858                         continue;
2859
2860                 nl_key = nla_nest_start(msg, i);
2861                 if (!nl_key ||
2862                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2863                             params->wep_key[i]) ||
2864                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2865                                 params->wep_key_len[i] == 5 ?
2866                                 WLAN_CIPHER_SUITE_WEP40 :
2867                                 WLAN_CIPHER_SUITE_WEP104) ||
2868                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2869                     (i == params->wep_tx_keyidx &&
2870                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2871                         return -ENOBUFS;
2872
2873                 nla_nest_end(msg, nl_key);
2874         }
2875         nla_nest_end(msg, nl_keys);
2876
2877         return 0;
2878 }
2879
2880
2881 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2882                             const u8 *addr, int cmd, u16 reason_code,
2883                             int local_state_change)
2884 {
2885         int ret;
2886         struct nl_msg *msg;
2887
2888         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2889             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2890             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2891             (local_state_change &&
2892              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2893                 nlmsg_free(msg);
2894                 return -1;
2895         }
2896
2897         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2898         if (ret) {
2899                 wpa_dbg(drv->ctx, MSG_DEBUG,
2900                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2901                         reason_code, ret, strerror(-ret));
2902         }
2903         return ret;
2904 }
2905
2906
2907 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2908                                          int reason_code)
2909 {
2910         int ret;
2911
2912         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2913         nl80211_mark_disconnected(drv);
2914         /* Disconnect command doesn't need BSSID - it uses cached value */
2915         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2916                                       reason_code, 0);
2917         /*
2918          * For locally generated disconnect, supplicant already generates a
2919          * DEAUTH event, so ignore the event from NL80211.
2920          */
2921         drv->ignore_next_local_disconnect = ret == 0;
2922
2923         return ret;
2924 }
2925
2926
2927 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2928                                              const u8 *addr, int reason_code)
2929 {
2930         struct wpa_driver_nl80211_data *drv = bss->drv;
2931         int ret;
2932
2933         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2934                 nl80211_mark_disconnected(drv);
2935                 return nl80211_leave_ibss(drv, 1);
2936         }
2937         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2938                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2939         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2940                    __func__, MAC2STR(addr), reason_code);
2941         nl80211_mark_disconnected(drv);
2942         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2943                                       reason_code, 0);
2944         /*
2945          * For locally generated deauthenticate, supplicant already generates a
2946          * DEAUTH event, so ignore the event from NL80211.
2947          */
2948         drv->ignore_next_local_deauth = ret == 0;
2949         return ret;
2950 }
2951
2952
2953 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2954                                      struct wpa_driver_auth_params *params)
2955 {
2956         int i;
2957
2958         drv->auth_freq = params->freq;
2959         drv->auth_alg = params->auth_alg;
2960         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2961         drv->auth_local_state_change = params->local_state_change;
2962         drv->auth_p2p = params->p2p;
2963
2964         if (params->bssid)
2965                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2966         else
2967                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2968
2969         if (params->ssid) {
2970                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2971                 drv->auth_ssid_len = params->ssid_len;
2972         } else
2973                 drv->auth_ssid_len = 0;
2974
2975
2976         os_free(drv->auth_ie);
2977         drv->auth_ie = NULL;
2978         drv->auth_ie_len = 0;
2979         if (params->ie) {
2980                 drv->auth_ie = os_malloc(params->ie_len);
2981                 if (drv->auth_ie) {
2982                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2983                         drv->auth_ie_len = params->ie_len;
2984                 }
2985         }
2986
2987         for (i = 0; i < 4; i++) {
2988                 if (params->wep_key[i] && params->wep_key_len[i] &&
2989                     params->wep_key_len[i] <= 16) {
2990                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2991                                   params->wep_key_len[i]);
2992                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2993                 } else
2994                         drv->auth_wep_key_len[i] = 0;
2995         }
2996 }
2997
2998
2999 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
3000 {
3001         struct wpa_driver_nl80211_data *drv = bss->drv;
3002
3003         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
3004                 return;
3005
3006         /*
3007          * Looks like we failed to unmask 11b rates previously. This could
3008          * happen, e.g., if the interface was down at the point in time when a
3009          * P2P group was terminated.
3010          */
3011         wpa_printf(MSG_DEBUG,
3012                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
3013                    bss->ifname);
3014         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3015 }
3016
3017
3018 static int wpa_driver_nl80211_authenticate(
3019         struct i802_bss *bss, struct wpa_driver_auth_params *params)
3020 {
3021         struct wpa_driver_nl80211_data *drv = bss->drv;
3022         int ret = -1, i;
3023         struct nl_msg *msg;
3024         enum nl80211_auth_type type;
3025         enum nl80211_iftype nlmode;
3026         int count = 0;
3027         int is_retry;
3028
3029         nl80211_unmask_11b_rates(bss);
3030
3031         is_retry = drv->retry_auth;
3032         drv->retry_auth = 0;
3033         drv->ignore_deauth_event = 0;
3034
3035         nl80211_mark_disconnected(drv);
3036         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3037         if (params->bssid)
3038                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3039         else
3040                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3041         /* FIX: IBSS mode */
3042         nlmode = params->p2p ?
3043                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3044         if (drv->nlmode != nlmode &&
3045             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3046                 return -1;
3047
3048 retry:
3049         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3050                    drv->ifindex);
3051
3052         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
3053         if (!msg)
3054                 goto fail;
3055
3056         for (i = 0; i < 4; i++) {
3057                 if (!params->wep_key[i])
3058                         continue;
3059                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3060                                            NULL, i,
3061                                            i == params->wep_tx_keyidx, NULL, 0,
3062                                            params->wep_key[i],
3063                                            params->wep_key_len[i]);
3064                 if (params->wep_tx_keyidx != i)
3065                         continue;
3066                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3067                                params->wep_key[i], params->wep_key_len[i]))
3068                         goto fail;
3069         }
3070
3071         if (params->bssid) {
3072                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3073                            MAC2STR(params->bssid));
3074                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
3075                         goto fail;
3076         }
3077         if (params->freq) {
3078                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3079                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
3080                         goto fail;
3081         }
3082         if (params->ssid) {
3083                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3084                                   params->ssid, params->ssid_len);
3085                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
3086                             params->ssid))
3087                         goto fail;
3088         }
3089         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3090         if (params->ie &&
3091             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
3092                 goto fail;
3093         if (params->sae_data) {
3094                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3095                             params->sae_data_len);
3096                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3097                             params->sae_data))
3098                         goto fail;
3099         }
3100         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3101                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3102         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3103                 type = NL80211_AUTHTYPE_SHARED_KEY;
3104         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3105                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3106         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3107                 type = NL80211_AUTHTYPE_FT;
3108         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3109                 type = NL80211_AUTHTYPE_SAE;
3110         else
3111                 goto fail;
3112         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3113         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
3114                 goto fail;
3115         if (params->local_state_change) {
3116                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3117                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
3118                         goto fail;
3119         }
3120
3121         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3122         msg = NULL;
3123         if (ret) {
3124                 wpa_dbg(drv->ctx, MSG_DEBUG,
3125                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3126                         ret, strerror(-ret));
3127                 count++;
3128                 if (ret == -EALREADY && count == 1 && params->bssid &&
3129                     !params->local_state_change) {
3130                         /*
3131                          * mac80211 does not currently accept new
3132                          * authentication if we are already authenticated. As a
3133                          * workaround, force deauthentication and try again.
3134                          */
3135                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3136                                    "after forced deauthentication");
3137                         drv->ignore_deauth_event = 1;
3138                         wpa_driver_nl80211_deauthenticate(
3139                                 bss, params->bssid,
3140                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3141                         nlmsg_free(msg);
3142                         goto retry;
3143                 }
3144
3145                 if (ret == -ENOENT && params->freq && !is_retry) {
3146                         /*
3147                          * cfg80211 has likely expired the BSS entry even
3148                          * though it was previously available in our internal
3149                          * BSS table. To recover quickly, start a single
3150                          * channel scan on the specified channel.
3151                          */
3152                         struct wpa_driver_scan_params scan;
3153                         int freqs[2];
3154
3155                         os_memset(&scan, 0, sizeof(scan));
3156                         scan.num_ssids = 1;
3157                         if (params->ssid) {
3158                                 scan.ssids[0].ssid = params->ssid;
3159                                 scan.ssids[0].ssid_len = params->ssid_len;
3160                         }
3161                         freqs[0] = params->freq;
3162                         freqs[1] = 0;
3163                         scan.freqs = freqs;
3164                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3165                                    "channel scan to refresh cfg80211 BSS "
3166                                    "entry");
3167                         ret = wpa_driver_nl80211_scan(bss, &scan);
3168                         if (ret == 0) {
3169                                 nl80211_copy_auth_params(drv, params);
3170                                 drv->scan_for_auth = 1;
3171                         }
3172                 } else if (is_retry) {
3173                         /*
3174                          * Need to indicate this with an event since the return
3175                          * value from the retry is not delivered to core code.
3176                          */
3177                         union wpa_event_data event;
3178                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3179                                    "failed");
3180                         os_memset(&event, 0, sizeof(event));
3181                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3182                                   ETH_ALEN);
3183                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3184                                              &event);
3185                 }
3186         } else {
3187                 wpa_printf(MSG_DEBUG,
3188                            "nl80211: Authentication request send successfully");
3189         }
3190
3191 fail:
3192         nlmsg_free(msg);
3193         return ret;
3194 }
3195
3196
3197 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3198 {
3199         struct wpa_driver_auth_params params;
3200         struct i802_bss *bss = drv->first_bss;
3201         int i;
3202
3203         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3204
3205         os_memset(&params, 0, sizeof(params));
3206         params.freq = drv->auth_freq;
3207         params.auth_alg = drv->auth_alg;
3208         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3209         params.local_state_change = drv->auth_local_state_change;
3210         params.p2p = drv->auth_p2p;
3211
3212         if (!is_zero_ether_addr(drv->auth_bssid_))
3213                 params.bssid = drv->auth_bssid_;
3214
3215         if (drv->auth_ssid_len) {
3216                 params.ssid = drv->auth_ssid;
3217                 params.ssid_len = drv->auth_ssid_len;
3218         }
3219
3220         params.ie = drv->auth_ie;
3221         params.ie_len = drv->auth_ie_len;
3222
3223         for (i = 0; i < 4; i++) {
3224                 if (drv->auth_wep_key_len[i]) {
3225                         params.wep_key[i] = drv->auth_wep_key[i];
3226                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3227                 }
3228         }
3229
3230         drv->retry_auth = 1;
3231         return wpa_driver_nl80211_authenticate(bss, &params);
3232 }
3233
3234
3235 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3236                                          const void *data, size_t len,
3237                                          int encrypt, int noack,
3238                                          unsigned int freq, int no_cck,
3239                                          int offchanok, unsigned int wait_time,
3240                                          const u16 *csa_offs,
3241                                          size_t csa_offs_len)
3242 {
3243         struct wpa_driver_nl80211_data *drv = bss->drv;
3244         u64 cookie;
3245         int res;
3246
3247         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3248                 freq = nl80211_get_assoc_freq(drv);
3249                 wpa_printf(MSG_DEBUG,
3250                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3251                            freq);
3252         }
3253         if (freq == 0) {
3254                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3255                            bss->freq);
3256                 freq = bss->freq;
3257         }
3258
3259         if (drv->use_monitor) {
3260                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3261                            freq, bss->freq);
3262                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3263         }
3264
3265         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3266         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3267                                      &cookie, no_cck, noack, offchanok,
3268                                      csa_offs, csa_offs_len);
3269         if (res == 0 && !noack) {
3270                 const struct ieee80211_mgmt *mgmt;
3271                 u16 fc;
3272
3273                 mgmt = (const struct ieee80211_mgmt *) data;
3274                 fc = le_to_host16(mgmt->frame_control);
3275                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3276                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3277                         wpa_printf(MSG_MSGDUMP,
3278                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3279                                    (long long unsigned int)
3280                                    drv->send_action_cookie,
3281                                    (long long unsigned int) cookie);
3282                         drv->send_action_cookie = cookie;
3283                 }
3284         }
3285
3286         return res;
3287 }
3288
3289
3290 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3291                                         size_t data_len, int noack,
3292                                         unsigned int freq, int no_cck,
3293                                         int offchanok,
3294                                         unsigned int wait_time,
3295                                         const u16 *csa_offs,
3296                                         size_t csa_offs_len)
3297 {
3298         struct wpa_driver_nl80211_data *drv = bss->drv;
3299         struct ieee80211_mgmt *mgmt;
3300         int encrypt = 1;
3301         u16 fc;
3302
3303         mgmt = (struct ieee80211_mgmt *) data;
3304         fc = le_to_host16(mgmt->frame_control);
3305         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3306                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3307                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3308                    fc, fc2str(fc), drv->nlmode);
3309
3310         if ((is_sta_interface(drv->nlmode) ||
3311              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3312             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3313             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3314                 /*
3315                  * The use of last_mgmt_freq is a bit of a hack,
3316                  * but it works due to the single-threaded nature
3317                  * of wpa_supplicant.
3318                  */
3319                 if (freq == 0) {
3320                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3321                                    drv->last_mgmt_freq);
3322                         freq = drv->last_mgmt_freq;
3323                 }
3324                 return nl80211_send_frame_cmd(bss, freq, 0,
3325                                               data, data_len, NULL, 1, noack,
3326                                               1, csa_offs, csa_offs_len);
3327         }
3328
3329         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3330                 if (freq == 0) {
3331                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3332                                    bss->freq);
3333                         freq = bss->freq;
3334                 }
3335                 return nl80211_send_frame_cmd(bss, freq,
3336                                               (int) freq == bss->freq ? 0 :
3337                                               wait_time,
3338                                               data, data_len,
3339                                               &drv->send_action_cookie,
3340                                               no_cck, noack, offchanok,
3341                                               csa_offs, csa_offs_len);
3342         }
3343
3344         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3345             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3346                 /*
3347                  * Only one of the authentication frame types is encrypted.
3348                  * In order for static WEP encryption to work properly (i.e.,
3349                  * to not encrypt the frame), we need to tell mac80211 about
3350                  * the frames that must not be encrypted.
3351                  */
3352                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3353                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3354                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3355                         encrypt = 0;
3356         }
3357
3358         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3359         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3360                                              noack, freq, no_cck, offchanok,
3361                                              wait_time, csa_offs,
3362                                              csa_offs_len);
3363 }
3364
3365
3366 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3367 {
3368         u8 rates[NL80211_MAX_SUPP_RATES];
3369         u8 rates_len = 0;
3370         int i;
3371
3372         if (!basic_rates)
3373                 return 0;
3374
3375         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3376                 rates[rates_len++] = basic_rates[i] / 5;
3377
3378         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3379 }
3380
3381
3382 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3383                            int slot, int ht_opmode, int ap_isolate,
3384                            const int *basic_rates)
3385 {
3386         struct wpa_driver_nl80211_data *drv = bss->drv;
3387         struct nl_msg *msg;
3388
3389         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3390             (cts >= 0 &&
3391              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3392             (preamble >= 0 &&
3393              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3394             (slot >= 0 &&
3395              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3396             (ht_opmode >= 0 &&
3397              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3398             (ap_isolate >= 0 &&
3399              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3400             nl80211_put_basic_rates(msg, basic_rates)) {
3401                 nlmsg_free(msg);
3402                 return -ENOBUFS;
3403         }
3404
3405         return send_and_recv_msgs(drv, msg, NULL, NULL);
3406 }
3407
3408
3409 static int wpa_driver_nl80211_set_acl(void *priv,
3410                                       struct hostapd_acl_params *params)
3411 {
3412         struct i802_bss *bss = priv;
3413         struct wpa_driver_nl80211_data *drv = bss->drv;
3414         struct nl_msg *msg;
3415         struct nl_msg *acl;
3416         unsigned int i;
3417         int ret;
3418
3419         if (!(drv->capa.max_acl_mac_addrs))
3420                 return -ENOTSUP;
3421
3422         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3423                 return -ENOTSUP;
3424
3425         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3426                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3427
3428         acl = nlmsg_alloc();
3429         if (!acl)
3430                 return -ENOMEM;
3431         for (i = 0; i < params->num_mac_acl; i++) {
3432                 if (nla_put(acl, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3433                         nlmsg_free(acl);
3434                         return -ENOMEM;
3435                 }
3436         }
3437
3438         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3439             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3440                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3441                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3442             nla_put_nested(msg, NL80211_ATTR_MAC_ADDRS, acl)) {
3443                 nlmsg_free(msg);
3444                 nlmsg_free(acl);
3445                 return -ENOMEM;
3446         }
3447         nlmsg_free(acl);
3448
3449         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3450         if (ret) {
3451                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3452                            ret, strerror(-ret));
3453         }
3454
3455         return ret;
3456 }
3457
3458
3459 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3460 {
3461         if (beacon_int > 0) {
3462                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3463                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3464                                    beacon_int);
3465         }
3466
3467         return 0;
3468 }
3469
3470
3471 static int wpa_driver_nl80211_set_ap(void *priv,
3472                                      struct wpa_driver_ap_params *params)
3473 {
3474         struct i802_bss *bss = priv;
3475         struct wpa_driver_nl80211_data *drv = bss->drv;
3476         struct nl_msg *msg;
3477         u8 cmd = NL80211_CMD_NEW_BEACON;
3478         int ret;
3479         int beacon_set;
3480         int num_suites;
3481         int smps_mode;
3482         u32 suites[10], suite;
3483         u32 ver;
3484
3485         beacon_set = params->reenable ? 0 : bss->beacon_set;
3486
3487         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3488                    beacon_set);
3489         if (beacon_set)
3490                 cmd = NL80211_CMD_SET_BEACON;
3491
3492         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3493                     params->head, params->head_len);
3494         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3495                     params->tail, params->tail_len);
3496         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3497         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3498         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3499         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3500                           params->ssid, params->ssid_len);
3501         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3502             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3503                     params->head) ||
3504             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3505                     params->tail) ||
3506             nl80211_put_beacon_int(msg, params->beacon_int) ||
3507             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3508             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3509                 goto fail;
3510         if (params->proberesp && params->proberesp_len) {
3511                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3512                             params->proberesp, params->proberesp_len);
3513                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3514                             params->proberesp))
3515                         goto fail;
3516         }
3517         switch (params->hide_ssid) {
3518         case NO_SSID_HIDING:
3519                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3520                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3521                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3522                         goto fail;
3523                 break;
3524         case HIDDEN_SSID_ZERO_LEN:
3525                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3526                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3527                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3528                         goto fail;
3529                 break;
3530         case HIDDEN_SSID_ZERO_CONTENTS:
3531                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3532                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3533                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3534                         goto fail;
3535                 break;
3536         }
3537         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3538         if (params->privacy &&
3539             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3540                 goto fail;
3541         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3542         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3543             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3544                 /* Leave out the attribute */
3545         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3546                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3547                                 NL80211_AUTHTYPE_SHARED_KEY))
3548                         goto fail;
3549         } else {
3550                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3551                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3552                         goto fail;
3553         }
3554
3555         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3556         ver = 0;
3557         if (params->wpa_version & WPA_PROTO_WPA)
3558                 ver |= NL80211_WPA_VERSION_1;
3559         if (params->wpa_version & WPA_PROTO_RSN)
3560                 ver |= NL80211_WPA_VERSION_2;
3561         if (ver &&
3562             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3563                 goto fail;
3564
3565         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3566                    params->key_mgmt_suites);
3567         num_suites = 0;
3568         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3569                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3570         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3571                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3572         if (num_suites &&
3573             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3574                     suites))
3575                 goto fail;
3576
3577         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3578             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3579             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3580                 goto fail;
3581
3582         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3583                    params->pairwise_ciphers);
3584         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3585                                                  suites, ARRAY_SIZE(suites));
3586         if (num_suites &&
3587             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3588                     num_suites * sizeof(u32), suites))
3589                 goto fail;
3590
3591         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3592                    params->group_cipher);
3593         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3594         if (suite &&
3595             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3596                 goto fail;
3597
3598         if (params->ht_opmode != -1) {
3599                 switch (params->smps_mode) {
3600                 case HT_CAP_INFO_SMPS_DYNAMIC:
3601                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3602                         smps_mode = NL80211_SMPS_DYNAMIC;
3603                         break;
3604                 case HT_CAP_INFO_SMPS_STATIC:
3605                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3606                         smps_mode = NL80211_SMPS_STATIC;
3607                         break;
3608                 default:
3609                         /* invalid - fallback to smps off */
3610                 case HT_CAP_INFO_SMPS_DISABLED:
3611                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3612                         smps_mode = NL80211_SMPS_OFF;
3613                         break;
3614                 }
3615                 if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3616                         goto fail;
3617         }
3618
3619         if (params->beacon_ies) {
3620                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3621                                 params->beacon_ies);
3622                 if (nla_put(msg, NL80211_ATTR_IE,
3623                             wpabuf_len(params->beacon_ies),
3624                             wpabuf_head(params->beacon_ies)))
3625                         goto fail;
3626         }
3627         if (params->proberesp_ies) {
3628                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3629                                 params->proberesp_ies);
3630                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3631                             wpabuf_len(params->proberesp_ies),
3632                             wpabuf_head(params->proberesp_ies)))
3633                         goto fail;
3634         }
3635         if (params->assocresp_ies) {
3636                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3637                                 params->assocresp_ies);
3638                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3639                             wpabuf_len(params->assocresp_ies),
3640                             wpabuf_head(params->assocresp_ies)))
3641                         goto fail;
3642         }
3643
3644         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3645                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3646                            params->ap_max_inactivity);
3647                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3648                                 params->ap_max_inactivity))
3649                         goto fail;
3650         }
3651
3652 #ifdef CONFIG_P2P
3653         if (params->p2p_go_ctwindow > 0) {
3654                 if (drv->p2p_go_ctwindow_supported) {
3655                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3656                                    params->p2p_go_ctwindow);
3657                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3658                                        params->p2p_go_ctwindow))
3659                                 goto fail;
3660                 } else {
3661                         wpa_printf(MSG_INFO,
3662                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3663                 }
3664         }
3665 #endif /* CONFIG_P2P */
3666
3667         if (params->pbss) {
3668                 wpa_printf(MSG_DEBUG, "nl80211: PBSS");
3669                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
3670                         goto fail;
3671         }
3672
3673         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3674         if (ret) {
3675                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3676                            ret, strerror(-ret));
3677         } else {
3678                 bss->beacon_set = 1;
3679                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3680                                 params->short_slot_time, params->ht_opmode,
3681                                 params->isolate, params->basic_rates);
3682                 if (beacon_set && params->freq &&
3683                     params->freq->bandwidth != bss->bandwidth) {
3684                         wpa_printf(MSG_DEBUG,
3685                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3686                                    bss->ifname, bss->bandwidth,
3687                                    params->freq->bandwidth);
3688                         ret = nl80211_set_channel(bss, params->freq, 1);
3689                         if (ret) {
3690                                 wpa_printf(MSG_DEBUG,
3691                                            "nl80211: Frequency set failed: %d (%s)",
3692                                            ret, strerror(-ret));
3693                         } else {
3694                                 wpa_printf(MSG_DEBUG,
3695                                            "nl80211: Frequency set succeeded for ht2040 coex");
3696                                 bss->bandwidth = params->freq->bandwidth;
3697                         }
3698                 } else if (!beacon_set) {
3699                         /*
3700                          * cfg80211 updates the driver on frequence change in AP
3701                          * mode only at the point when beaconing is started, so
3702                          * set the initial value here.
3703                          */
3704                         bss->bandwidth = params->freq->bandwidth;
3705                 }
3706         }
3707         return ret;
3708 fail:
3709         nlmsg_free(msg);
3710         return -ENOBUFS;
3711 }
3712
3713
3714 static int nl80211_put_freq_params(struct nl_msg *msg,
3715                                    const struct hostapd_freq_params *freq)
3716 {
3717         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3718         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3719                 return -ENOBUFS;
3720
3721         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3722         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3723
3724         if (freq->vht_enabled) {
3725                 enum nl80211_chan_width cw;
3726
3727                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3728                 switch (freq->bandwidth) {
3729                 case 20:
3730                         cw = NL80211_CHAN_WIDTH_20;
3731                         break;
3732                 case 40:
3733                         cw = NL80211_CHAN_WIDTH_40;
3734                         break;
3735                 case 80:
3736                         if (freq->center_freq2)
3737                                 cw = NL80211_CHAN_WIDTH_80P80;
3738                         else
3739                                 cw = NL80211_CHAN_WIDTH_80;
3740                         break;
3741                 case 160:
3742                         cw = NL80211_CHAN_WIDTH_160;
3743                         break;
3744                 default:
3745                         return -EINVAL;
3746                 }
3747
3748                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3749                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3750                            freq->center_freq1);
3751                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3752                            freq->center_freq2);
3753                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3754                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3755                                 freq->center_freq1) ||
3756                     (freq->center_freq2 &&
3757                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3758                                  freq->center_freq2)))
3759                         return -ENOBUFS;
3760         } else if (freq->ht_enabled) {
3761                 enum nl80211_channel_type ct;
3762
3763                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3764                            freq->sec_channel_offset);
3765                 switch (freq->sec_channel_offset) {
3766                 case -1:
3767                         ct = NL80211_CHAN_HT40MINUS;
3768                         break;
3769                 case 1:
3770                         ct = NL80211_CHAN_HT40PLUS;
3771                         break;
3772                 default:
3773                         ct = NL80211_CHAN_HT20;
3774                         break;
3775                 }
3776
3777                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3778                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3779                         return -ENOBUFS;
3780         }
3781         return 0;
3782 }
3783
3784
3785 static int nl80211_set_channel(struct i802_bss *bss,
3786                                struct hostapd_freq_params *freq, int set_chan)
3787 {
3788         struct wpa_driver_nl80211_data *drv = bss->drv;
3789         struct nl_msg *msg;
3790         int ret;
3791
3792         wpa_printf(MSG_DEBUG,
3793                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3794                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3795                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3796
3797         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3798                               NL80211_CMD_SET_WIPHY);
3799         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3800                 nlmsg_free(msg);
3801                 return -1;
3802         }
3803
3804         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3805         if (ret == 0) {
3806                 bss->freq = freq->freq;
3807                 return 0;
3808         }
3809         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3810                    "%d (%s)", freq->freq, ret, strerror(-ret));
3811         return -1;
3812 }
3813
3814
3815 static u32 sta_flags_nl80211(int flags)
3816 {
3817         u32 f = 0;
3818
3819         if (flags & WPA_STA_AUTHORIZED)
3820                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3821         if (flags & WPA_STA_WMM)
3822                 f |= BIT(NL80211_STA_FLAG_WME);
3823         if (flags & WPA_STA_SHORT_PREAMBLE)
3824                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3825         if (flags & WPA_STA_MFP)
3826                 f |= BIT(NL80211_STA_FLAG_MFP);
3827         if (flags & WPA_STA_TDLS_PEER)
3828                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3829         if (flags & WPA_STA_AUTHENTICATED)
3830                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3831         if (flags & WPA_STA_ASSOCIATED)
3832                 f |= BIT(NL80211_STA_FLAG_ASSOCIATED);
3833
3834         return f;
3835 }
3836
3837
3838 #ifdef CONFIG_MESH
3839 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3840 {
3841         switch (state) {
3842         case PLINK_IDLE:
3843                 return NL80211_PLINK_LISTEN;
3844         case PLINK_OPN_SNT:
3845                 return NL80211_PLINK_OPN_SNT;
3846         case PLINK_OPN_RCVD:
3847                 return NL80211_PLINK_OPN_RCVD;
3848         case PLINK_CNF_RCVD:
3849                 return NL80211_PLINK_CNF_RCVD;
3850         case PLINK_ESTAB:
3851                 return NL80211_PLINK_ESTAB;
3852         case PLINK_HOLDING:
3853                 return NL80211_PLINK_HOLDING;
3854         case PLINK_BLOCKED:
3855                 return NL80211_PLINK_BLOCKED;
3856         default:
3857                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3858                            state);
3859         }
3860         return -1;
3861 }
3862 #endif /* CONFIG_MESH */
3863
3864
3865 static int wpa_driver_nl80211_sta_add(void *priv,
3866                                       struct hostapd_sta_add_params *params)
3867 {
3868         struct i802_bss *bss = priv;
3869         struct wpa_driver_nl80211_data *drv = bss->drv;
3870         struct nl_msg *msg;
3871         struct nl80211_sta_flag_update upd;
3872         int ret = -ENOBUFS;
3873
3874         if ((params->flags & WPA_STA_TDLS_PEER) &&
3875             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3876                 return -EOPNOTSUPP;
3877
3878         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3879                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3880         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3881                               NL80211_CMD_NEW_STATION);
3882         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3883                 goto fail;
3884
3885         /*
3886          * Set the below properties only in one of the following cases:
3887          * 1. New station is added, already associated.
3888          * 2. Set WPA_STA_TDLS_PEER station.
3889          * 3. Set an already added unassociated station, if driver supports
3890          * full AP client state. (Set these properties after station became
3891          * associated will be rejected by the driver).
3892          */
3893         if (!params->set || (params->flags & WPA_STA_TDLS_PEER) ||
3894             (params->set && FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3895              (params->flags & WPA_STA_ASSOCIATED))) {
3896                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3897                             params->supp_rates, params->supp_rates_len);
3898                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3899                            params->capability);
3900                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3901                             params->supp_rates_len, params->supp_rates) ||
3902                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3903                                 params->capability))
3904                         goto fail;
3905
3906                 if (params->ht_capabilities) {
3907                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3908                                     (u8 *) params->ht_capabilities,
3909                                     sizeof(*params->ht_capabilities));
3910                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3911                                     sizeof(*params->ht_capabilities),
3912                                     params->ht_capabilities))
3913                                 goto fail;
3914                 }
3915
3916                 if (params->vht_capabilities) {
3917                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3918                                     (u8 *) params->vht_capabilities,
3919                                     sizeof(*params->vht_capabilities));
3920                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3921                                     sizeof(*params->vht_capabilities),
3922                                     params->vht_capabilities))
3923                                 goto fail;
3924                 }
3925
3926                 if (params->ext_capab) {
3927                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3928                                     params->ext_capab, params->ext_capab_len);
3929                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3930                                     params->ext_capab_len, params->ext_capab))
3931                                 goto fail;
3932                 }
3933
3934                 if (is_ap_interface(drv->nlmode) &&
3935                     nla_put_u8(msg, NL80211_ATTR_STA_SUPPORT_P2P_PS,
3936                                params->support_p2p_ps ?
3937                                NL80211_P2P_PS_SUPPORTED :
3938                                NL80211_P2P_PS_UNSUPPORTED))
3939                         goto fail;
3940         }
3941         if (!params->set) {
3942                 if (params->aid) {
3943                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3944                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3945                                 goto fail;
3946                 } else {
3947                         /*
3948                          * cfg80211 validates that AID is non-zero, so we have
3949                          * to make this a non-zero value for the TDLS case where
3950                          * a dummy STA entry is used for now and for a station
3951                          * that is still not associated.
3952                          */
3953                         wpa_printf(MSG_DEBUG, "  * aid=1 (%s workaround)",
3954                                    (params->flags & WPA_STA_TDLS_PEER) ?
3955                                    "TDLS" : "UNASSOC_STA");
3956                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3957                                 goto fail;
3958                 }
3959                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3960                            params->listen_interval);
3961                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3962                                 params->listen_interval))
3963                         goto fail;
3964         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3965                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3966                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3967                         goto fail;
3968         } else if (FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3969                    (params->flags & WPA_STA_ASSOCIATED)) {
3970                 wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3971                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3972                            params->listen_interval);
3973                 if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid) ||
3974                     nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3975                                 params->listen_interval))
3976                         goto fail;
3977         }
3978
3979         if (params->vht_opmode_enabled) {
3980                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3981                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3982                                params->vht_opmode))
3983                         goto fail;
3984         }
3985
3986         if (params->supp_channels) {
3987                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3988                             params->supp_channels, params->supp_channels_len);
3989                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3990                             params->supp_channels_len, params->supp_channels))
3991                         goto fail;
3992         }
3993
3994         if (params->supp_oper_classes) {
3995                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3996                             params->supp_oper_classes,
3997                             params->supp_oper_classes_len);
3998                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3999                             params->supp_oper_classes_len,
4000                             params->supp_oper_classes))
4001                         goto fail;
4002         }
4003
4004         os_memset(&upd, 0, sizeof(upd));
4005         upd.set = sta_flags_nl80211(params->flags);
4006         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4007
4008         /*
4009          * If the driver doesn't support full AP client state, ignore ASSOC/AUTH
4010          * flags, as nl80211 driver moves a new station, by default, into
4011          * associated state.
4012          *
4013          * On the other hand, if the driver supports that feature and the
4014          * station is added in unauthenticated state, set the
4015          * authenticated/associated bits in the mask to prevent moving this
4016          * station to associated state before it is actually associated.
4017          *
4018          * This is irrelevant for mesh mode where the station is added to the
4019          * driver as authenticated already, and ASSOCIATED isn't part of the
4020          * nl80211 API.
4021          */
4022         if (!is_mesh_interface(drv->nlmode)) {
4023                 if (!FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags)) {
4024                         wpa_printf(MSG_DEBUG,
4025                                    "nl80211: Ignore ASSOC/AUTH flags since driver doesn't support full AP client state");
4026                         upd.mask &= ~(BIT(NL80211_STA_FLAG_ASSOCIATED) |
4027                                       BIT(NL80211_STA_FLAG_AUTHENTICATED));
4028                 } else if (!params->set &&
4029                            !(params->flags & WPA_STA_TDLS_PEER)) {
4030                         if (!(params->flags & WPA_STA_AUTHENTICATED))
4031                                 upd.mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4032                         if (!(params->flags & WPA_STA_ASSOCIATED))
4033                                 upd.mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
4034                 }
4035         }
4036
4037         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
4038                    upd.set, upd.mask);
4039         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4040                 goto fail;
4041
4042 #ifdef CONFIG_MESH
4043         if (params->plink_state &&
4044             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
4045                        sta_plink_state_nl80211(params->plink_state)))
4046                 goto fail;
4047 #endif /* CONFIG_MESH */
4048
4049         if (params->flags & WPA_STA_WMM) {
4050                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4051
4052                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
4053                 if (!wme ||
4054                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4055                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
4056                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
4057                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4058                                WMM_QOSINFO_STA_SP_MASK))
4059                         goto fail;
4060                 nla_nest_end(msg, wme);
4061         }
4062
4063         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4064         msg = NULL;
4065         if (ret)
4066                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4067                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4068                            strerror(-ret));
4069         if (ret == -EEXIST)
4070                 ret = 0;
4071 fail:
4072         nlmsg_free(msg);
4073         return ret;
4074 }
4075
4076
4077 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4078 {
4079 #ifdef CONFIG_LIBNL3_ROUTE
4080         struct wpa_driver_nl80211_data *drv = bss->drv;
4081         struct rtnl_neigh *rn;
4082         struct nl_addr *nl_addr;
4083         int err;
4084
4085         rn = rtnl_neigh_alloc();
4086         if (!rn)
4087                 return;
4088
4089         rtnl_neigh_set_family(rn, AF_BRIDGE);
4090         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4091         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4092         if (!nl_addr) {
4093                 rtnl_neigh_put(rn);
4094                 return;
4095         }
4096         rtnl_neigh_set_lladdr(rn, nl_addr);
4097
4098         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4099         if (err < 0) {
4100                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4101                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4102                            bss->ifindex, nl_geterror(err));
4103         } else {
4104                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4105                            MACSTR, MAC2STR(addr));
4106         }
4107
4108         nl_addr_put(nl_addr);
4109         rtnl_neigh_put(rn);
4110 #endif /* CONFIG_LIBNL3_ROUTE */
4111 }
4112
4113
4114 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4115                                          int deauth, u16 reason_code)
4116 {
4117         struct wpa_driver_nl80211_data *drv = bss->drv;
4118         struct nl_msg *msg;
4119         int ret;
4120
4121         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
4122             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
4123             (deauth == 0 &&
4124              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4125                         WLAN_FC_STYPE_DISASSOC)) ||
4126             (deauth == 1 &&
4127              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4128                         WLAN_FC_STYPE_DEAUTH)) ||
4129             (reason_code &&
4130              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
4131                 nlmsg_free(msg);
4132                 return -ENOBUFS;
4133         }
4134
4135         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4136         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4137                    " --> %d (%s)",
4138                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4139
4140         if (drv->rtnl_sk)
4141                 rtnl_neigh_delete_fdb_entry(bss, addr);
4142
4143         if (ret == -ENOENT)
4144                 return 0;
4145         return ret;
4146 }
4147
4148
4149 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4150 {
4151         struct nl_msg *msg;
4152         struct wpa_driver_nl80211_data *drv2;
4153
4154         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4155
4156         /* stop listening for EAPOL on this interface */
4157         dl_list_for_each(drv2, &drv->global->interfaces,
4158                          struct wpa_driver_nl80211_data, list)
4159         {
4160                 del_ifidx(drv2, ifidx, IFIDX_ANY);
4161                 /* Remove all bridges learned for this iface */
4162                 del_ifidx(drv2, IFIDX_ANY, ifidx);
4163         }
4164
4165         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
4166         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4167                 return;
4168         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4169 }
4170
4171
4172 const char * nl80211_iftype_str(enum nl80211_iftype mode)
4173 {
4174         switch (mode) {
4175         case NL80211_IFTYPE_ADHOC:
4176                 return "ADHOC";
4177         case NL80211_IFTYPE_STATION:
4178                 return "STATION";
4179         case NL80211_IFTYPE_AP:
4180                 return "AP";
4181         case NL80211_IFTYPE_AP_VLAN:
4182                 return "AP_VLAN";
4183         case NL80211_IFTYPE_WDS:
4184                 return "WDS";
4185         case NL80211_IFTYPE_MONITOR:
4186                 return "MONITOR";
4187         case NL80211_IFTYPE_MESH_POINT:
4188                 return "MESH_POINT";
4189         case NL80211_IFTYPE_P2P_CLIENT:
4190                 return "P2P_CLIENT";
4191         case NL80211_IFTYPE_P2P_GO:
4192                 return "P2P_GO";
4193         case NL80211_IFTYPE_P2P_DEVICE:
4194                 return "P2P_DEVICE";
4195         default:
4196                 return "unknown";
4197         }
4198 }
4199
4200
4201 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4202                                      const char *ifname,
4203                                      enum nl80211_iftype iftype,
4204                                      const u8 *addr, int wds,
4205                                      int (*handler)(struct nl_msg *, void *),
4206                                      void *arg)
4207 {
4208         struct nl_msg *msg;
4209         int ifidx;
4210         int ret = -ENOBUFS;
4211
4212         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4213                    iftype, nl80211_iftype_str(iftype));
4214
4215         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
4216         if (!msg ||
4217             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
4218             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
4219                 goto fail;
4220
4221         if (iftype == NL80211_IFTYPE_MONITOR) {
4222                 struct nlattr *flags;
4223
4224                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4225                 if (!flags ||
4226                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
4227                         goto fail;
4228
4229                 nla_nest_end(msg, flags);
4230         } else if (wds) {
4231                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4232                         goto fail;
4233         }
4234
4235         /*
4236          * Tell cfg80211 that the interface belongs to the socket that created
4237          * it, and the interface should be deleted when the socket is closed.
4238          */
4239         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4240                 goto fail;
4241
4242         ret = send_and_recv_msgs(drv, msg, handler, arg);
4243         msg = NULL;
4244         if (ret) {
4245         fail:
4246                 nlmsg_free(msg);
4247                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4248                            ifname, ret, strerror(-ret));
4249                 return ret;
4250         }
4251
4252         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4253                 return 0;
4254
4255         ifidx = if_nametoindex(ifname);
4256         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4257                    ifname, ifidx);
4258
4259         if (ifidx <= 0)
4260                 return -1;
4261
4262         /*
4263          * Some virtual interfaces need to process EAPOL packets and events on
4264          * the parent interface. This is used mainly with hostapd.
4265          */
4266         if (drv->hostapd ||
4267             iftype == NL80211_IFTYPE_AP_VLAN ||
4268             iftype == NL80211_IFTYPE_WDS ||
4269             iftype == NL80211_IFTYPE_MONITOR) {
4270                 /* start listening for EAPOL on this interface */
4271                 add_ifidx(drv, ifidx, IFIDX_ANY);
4272         }
4273
4274         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4275             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4276                 nl80211_remove_iface(drv, ifidx);
4277                 return -1;
4278         }
4279
4280         return ifidx;
4281 }
4282
4283
4284 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4285                          const char *ifname, enum nl80211_iftype iftype,
4286                          const u8 *addr, int wds,
4287                          int (*handler)(struct nl_msg *, void *),
4288                          void *arg, int use_existing)
4289 {
4290         int ret;
4291
4292         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4293                                         arg);
4294
4295         /* if error occurred and interface exists already */
4296         if (ret == -ENFILE && if_nametoindex(ifname)) {
4297                 if (use_existing) {
4298                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4299                                    ifname);
4300                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4301                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4302                                                addr) < 0 &&
4303                             (linux_set_iface_flags(drv->global->ioctl_sock,
4304                                                    ifname, 0) < 0 ||
4305                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4306                                                 addr) < 0 ||
4307                              linux_set_iface_flags(drv->global->ioctl_sock,
4308                                                    ifname, 1) < 0))
4309                                         return -1;
4310                         return -ENFILE;
4311                 }
4312                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4313
4314                 /* Try to remove the interface that was already there. */
4315                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4316
4317                 /* Try to create the interface again */
4318                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4319                                                 wds, handler, arg);
4320         }
4321
4322         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4323                 wpa_printf(MSG_DEBUG,
4324                            "nl80211: Interface %s created for P2P - disable 11b rates",
4325                            ifname);
4326                 nl80211_disable_11b_rates(drv, ret, 1);
4327         }
4328
4329         return ret;
4330 }
4331
4332
4333 static int nl80211_setup_ap(struct i802_bss *bss)
4334 {
4335         struct wpa_driver_nl80211_data *drv = bss->drv;
4336
4337         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4338                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4339
4340         /*
4341          * Disable Probe Request reporting unless we need it in this way for
4342          * devices that include the AP SME, in the other case (unless using
4343          * monitor iface) we'll get it through the nl_mgmt socket instead.
4344          */
4345         if (!drv->device_ap_sme)
4346                 wpa_driver_nl80211_probe_req_report(bss, 0);
4347
4348         if (!drv->device_ap_sme && !drv->use_monitor)
4349                 if (nl80211_mgmt_subscribe_ap(bss))
4350                         return -1;
4351
4352         if (drv->device_ap_sme && !drv->use_monitor)
4353                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4354                         wpa_printf(MSG_DEBUG,
4355                                    "nl80211: Failed to subscribe for mgmt frames from SME driver - trying to run without it");
4356
4357         if (!drv->device_ap_sme && drv->use_monitor &&
4358             nl80211_create_monitor_interface(drv) &&
4359             !drv->device_ap_sme)
4360                 return -1;
4361
4362         if (drv->device_ap_sme &&
4363             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4364                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4365                            "Probe Request frame reporting in AP mode");
4366                 /* Try to survive without this */
4367         }
4368
4369         return 0;
4370 }
4371
4372
4373 static void nl80211_teardown_ap(struct i802_bss *bss)
4374 {
4375         struct wpa_driver_nl80211_data *drv = bss->drv;
4376
4377         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4378                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4379         if (drv->device_ap_sme) {
4380                 wpa_driver_nl80211_probe_req_report(bss, 0);
4381                 if (!drv->use_monitor)
4382                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4383         } else if (drv->use_monitor)
4384                 nl80211_remove_monitor_interface(drv);
4385         else
4386                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4387
4388         bss->beacon_set = 0;
4389 }
4390
4391
4392 static int nl80211_send_eapol_data(struct i802_bss *bss,
4393                                    const u8 *addr, const u8 *data,
4394                                    size_t data_len)
4395 {
4396         struct sockaddr_ll ll;
4397         int ret;
4398
4399         if (bss->drv->eapol_tx_sock < 0) {
4400                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4401                 return -1;
4402         }
4403
4404         os_memset(&ll, 0, sizeof(ll));
4405         ll.sll_family = AF_PACKET;
4406         ll.sll_ifindex = bss->ifindex;
4407         ll.sll_protocol = htons(ETH_P_PAE);
4408         ll.sll_halen = ETH_ALEN;
4409         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4410         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4411                      (struct sockaddr *) &ll, sizeof(ll));
4412         if (ret < 0)
4413                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4414                            strerror(errno));
4415
4416         return ret;
4417 }
4418
4419
4420 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4421
4422 static int wpa_driver_nl80211_hapd_send_eapol(
4423         void *priv, const u8 *addr, const u8 *data,
4424         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4425 {
4426         struct i802_bss *bss = priv;
4427         struct wpa_driver_nl80211_data *drv = bss->drv;
4428         struct ieee80211_hdr *hdr;
4429         size_t len;
4430         u8 *pos;
4431         int res;
4432         int qos = flags & WPA_STA_WMM;
4433
4434         if (drv->device_ap_sme || !drv->use_monitor)
4435                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4436
4437         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4438                 data_len;
4439         hdr = os_zalloc(len);
4440         if (hdr == NULL) {
4441                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4442                            (unsigned long) len);
4443                 return -1;
4444         }
4445
4446         hdr->frame_control =
4447                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4448         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4449         if (encrypt)
4450                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4451         if (qos) {
4452                 hdr->frame_control |=
4453                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4454         }
4455
4456         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4457         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4458         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4459         pos = (u8 *) (hdr + 1);
4460
4461         if (qos) {
4462                 /* Set highest priority in QoS header */
4463                 pos[0] = 7;
4464                 pos[1] = 0;
4465                 pos += 2;
4466         }
4467
4468         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4469         pos += sizeof(rfc1042_header);
4470         WPA_PUT_BE16(pos, ETH_P_PAE);
4471         pos += 2;
4472         memcpy(pos, data, data_len);
4473
4474         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4475                                             0, 0, 0, 0, NULL, 0);
4476         if (res < 0) {
4477                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4478                            "failed: %d (%s)",
4479                            (unsigned long) len, errno, strerror(errno));
4480         }
4481         os_free(hdr);
4482
4483         return res;
4484 }
4485
4486
4487 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4488                                             unsigned int total_flags,
4489                                             unsigned int flags_or,
4490                                             unsigned int flags_and)
4491 {
4492         struct i802_bss *bss = priv;
4493         struct nl_msg *msg;
4494         struct nlattr *flags;
4495         struct nl80211_sta_flag_update upd;
4496
4497         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4498                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4499                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4500                    !!(total_flags & WPA_STA_AUTHORIZED));
4501
4502         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4503             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4504                 goto fail;
4505
4506         /*
4507          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4508          * can be removed eventually.
4509          */
4510         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4511         if (!flags ||
4512             ((total_flags & WPA_STA_AUTHORIZED) &&
4513              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4514             ((total_flags & WPA_STA_WMM) &&
4515              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4516             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4517              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4518             ((total_flags & WPA_STA_MFP) &&
4519              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4520             ((total_flags & WPA_STA_TDLS_PEER) &&
4521              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4522                 goto fail;
4523
4524         nla_nest_end(msg, flags);
4525
4526         os_memset(&upd, 0, sizeof(upd));
4527         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4528         upd.set = sta_flags_nl80211(flags_or);
4529         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4530                 goto fail;
4531
4532         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4533 fail:
4534         nlmsg_free(msg);
4535         return -ENOBUFS;
4536 }
4537
4538
4539 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4540                                  struct wpa_driver_associate_params *params)
4541 {
4542         enum nl80211_iftype nlmode, old_mode;
4543
4544         if (params->p2p) {
4545                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4546                            "group (GO)");
4547                 nlmode = NL80211_IFTYPE_P2P_GO;
4548         } else
4549                 nlmode = NL80211_IFTYPE_AP;
4550
4551         old_mode = drv->nlmode;
4552         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4553                 nl80211_remove_monitor_interface(drv);
4554                 return -1;
4555         }
4556
4557         if (params->freq.freq &&
4558             nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4559                 if (old_mode != nlmode)
4560                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4561                 nl80211_remove_monitor_interface(drv);
4562                 return -1;
4563         }
4564
4565         return 0;
4566 }
4567
4568
4569 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4570                               int reset_mode)
4571 {
4572         struct nl_msg *msg;
4573         int ret;
4574
4575         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4576         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4577         if (ret) {
4578                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4579                            "(%s)", ret, strerror(-ret));
4580         } else {
4581                 wpa_printf(MSG_DEBUG,
4582                            "nl80211: Leave IBSS request sent successfully");
4583         }
4584
4585         if (reset_mode &&
4586             wpa_driver_nl80211_set_mode(drv->first_bss,
4587                                         NL80211_IFTYPE_STATION)) {
4588                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4589                            "station mode");
4590         }
4591
4592         return ret;
4593 }
4594
4595
4596 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4597                                     struct wpa_driver_associate_params *params)
4598 {
4599         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4600                 return -1;
4601
4602         if (params->htcaps && params->htcaps_mask) {
4603                 int sz = sizeof(struct ieee80211_ht_capabilities);
4604                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4605                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4606                             params->htcaps_mask, sz);
4607                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4608                             params->htcaps) ||
4609                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4610                             params->htcaps_mask))
4611                         return -1;
4612         }
4613
4614 #ifdef CONFIG_VHT_OVERRIDES
4615         if (params->disable_vht) {
4616                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4617                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4618                         return -1;
4619         }
4620
4621         if (params->vhtcaps && params->vhtcaps_mask) {
4622                 int sz = sizeof(struct ieee80211_vht_capabilities);
4623                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4624                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4625                             params->vhtcaps_mask, sz);
4626                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4627                             params->vhtcaps) ||
4628                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4629                             params->vhtcaps_mask))
4630                         return -1;
4631         }
4632 #endif /* CONFIG_VHT_OVERRIDES */
4633
4634         return 0;
4635 }
4636
4637
4638 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4639                                    struct wpa_driver_associate_params *params)
4640 {
4641         struct nl_msg *msg;
4642         int ret = -1;
4643         int count = 0;
4644
4645         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4646
4647         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4648                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4649                            "IBSS mode");
4650                 return -1;
4651         }
4652
4653 retry:
4654         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4655             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4656                 goto fail;
4657
4658         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4659                           params->ssid, params->ssid_len);
4660         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4661                 goto fail;
4662         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4663         drv->ssid_len = params->ssid_len;
4664
4665         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4666             nl80211_put_beacon_int(msg, params->beacon_int))
4667                 goto fail;
4668
4669         ret = nl80211_set_conn_keys(params, msg);
4670         if (ret)
4671                 goto fail;
4672
4673         if (params->bssid && params->fixed_bssid) {
4674                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4675                            MAC2STR(params->bssid));
4676                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4677                         goto fail;
4678         }
4679
4680         if (params->fixed_freq) {
4681                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4682                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4683                         goto fail;
4684         }
4685
4686         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4687             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4688             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4689             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4690                 wpa_printf(MSG_DEBUG, "  * control port");
4691                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4692                         goto fail;
4693         }
4694
4695         if (params->wpa_ie) {
4696                 wpa_hexdump(MSG_DEBUG,
4697                             "  * Extra IEs for Beacon/Probe Response frames",
4698                             params->wpa_ie, params->wpa_ie_len);
4699                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4700                             params->wpa_ie))
4701                         goto fail;
4702         }
4703
4704         ret = nl80211_ht_vht_overrides(msg, params);
4705         if (ret < 0)
4706                 goto fail;
4707
4708         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4709         msg = NULL;
4710         if (ret) {
4711                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4712                            ret, strerror(-ret));
4713                 count++;
4714                 if (ret == -EALREADY && count == 1) {
4715                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4716                                    "forced leave");
4717                         nl80211_leave_ibss(drv, 0);
4718                         nlmsg_free(msg);
4719                         goto retry;
4720                 }
4721         } else {
4722                 wpa_printf(MSG_DEBUG,
4723                            "nl80211: Join IBSS request sent successfully");
4724         }
4725
4726 fail:
4727         nlmsg_free(msg);
4728         return ret;
4729 }
4730
4731
4732 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4733                                   struct wpa_driver_associate_params *params,
4734                                   struct nl_msg *msg)
4735 {
4736         if (params->bssid) {
4737                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4738                            MAC2STR(params->bssid));
4739                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4740                         return -1;
4741         }
4742
4743         if (params->bssid_hint) {
4744                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4745                            MAC2STR(params->bssid_hint));
4746                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4747                             params->bssid_hint))
4748                         return -1;
4749         }
4750
4751         if (params->freq.freq) {
4752                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4753                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4754                                 params->freq.freq))
4755                         return -1;
4756                 drv->assoc_freq = params->freq.freq;
4757         } else
4758                 drv->assoc_freq = 0;
4759
4760         if (params->freq_hint) {
4761                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4762                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4763                                 params->freq_hint))
4764                         return -1;
4765         }
4766
4767         if (params->bg_scan_period >= 0) {
4768                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4769                            params->bg_scan_period);
4770                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4771                                 params->bg_scan_period))
4772                         return -1;
4773         }
4774
4775         if (params->ssid) {
4776                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4777                                   params->ssid, params->ssid_len);
4778                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4779                             params->ssid))
4780                         return -1;
4781                 if (params->ssid_len > sizeof(drv->ssid))
4782                         return -1;
4783                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4784                 drv->ssid_len = params->ssid_len;
4785         }
4786
4787         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4788         if (params->wpa_ie &&
4789             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4790                 return -1;
4791
4792         if (params->wpa_proto) {
4793                 enum nl80211_wpa_versions ver = 0;
4794
4795                 if (params->wpa_proto & WPA_PROTO_WPA)
4796                         ver |= NL80211_WPA_VERSION_1;
4797                 if (params->wpa_proto & WPA_PROTO_RSN)
4798                         ver |= NL80211_WPA_VERSION_2;
4799
4800                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4801                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4802                         return -1;
4803         }
4804
4805         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4806                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4807                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4808                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4809                                 cipher))
4810                         return -1;
4811         }
4812
4813         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4814             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4815                 /*
4816                  * This is likely to work even though many drivers do not
4817                  * advertise support for operations without GTK.
4818                  */
4819                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4820         } else if (params->group_suite != WPA_CIPHER_NONE) {
4821                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4822                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4823                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4824                         return -1;
4825         }
4826
4827         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4828             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4829             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4830             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4831             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4832             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4833             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4834             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4835             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4836             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4837                 int mgmt = WLAN_AKM_SUITE_PSK;
4838
4839                 switch (params->key_mgmt_suite) {
4840                 case WPA_KEY_MGMT_CCKM:
4841                         mgmt = WLAN_AKM_SUITE_CCKM;
4842                         break;
4843                 case WPA_KEY_MGMT_IEEE8021X:
4844                         mgmt = WLAN_AKM_SUITE_8021X;
4845                         break;
4846                 case WPA_KEY_MGMT_FT_IEEE8021X:
4847                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4848                         break;
4849                 case WPA_KEY_MGMT_FT_PSK:
4850                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4851                         break;
4852                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4853                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4854                         break;
4855                 case WPA_KEY_MGMT_PSK_SHA256:
4856                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4857                         break;
4858                 case WPA_KEY_MGMT_OSEN:
4859                         mgmt = WLAN_AKM_SUITE_OSEN;
4860                         break;
4861                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4862                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4863                         break;
4864                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4865                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4866                         break;
4867                 case WPA_KEY_MGMT_PSK:
4868                 default:
4869                         mgmt = WLAN_AKM_SUITE_PSK;
4870                         break;
4871                 }
4872                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4873                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4874                         return -1;
4875         }
4876
4877         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4878                 return -1;
4879
4880         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4881             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4882                 return -1;
4883
4884         if (params->rrm_used) {
4885                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4886                 if ((!((drv_rrm_flags &
4887                         WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
4888                        (drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
4889                      !(drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) ||
4890                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4891                         return -1;
4892         }
4893
4894         if (nl80211_ht_vht_overrides(msg, params) < 0)
4895                 return -1;
4896
4897         if (params->p2p)
4898                 wpa_printf(MSG_DEBUG, "  * P2P group");
4899
4900         if (params->pbss) {
4901                 wpa_printf(MSG_DEBUG, "  * PBSS");
4902                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
4903                         return -1;
4904         }
4905
4906         drv->connect_reassoc = 0;
4907         if (params->prev_bssid) {
4908                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4909                            MAC2STR(params->prev_bssid));
4910                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4911                             params->prev_bssid))
4912                         return -1;
4913                 drv->connect_reassoc = 1;
4914         }
4915
4916         return 0;
4917 }
4918
4919
4920 static int wpa_driver_nl80211_try_connect(
4921         struct wpa_driver_nl80211_data *drv,
4922         struct wpa_driver_associate_params *params)
4923 {
4924         struct nl_msg *msg;
4925         enum nl80211_auth_type type;
4926         int ret;
4927         int algs;
4928
4929 #ifdef CONFIG_DRIVER_NL80211_QCA
4930         if (params->req_key_mgmt_offload && params->psk &&
4931             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4932              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4933              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4934                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4935                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4936                 if (ret)
4937                         return ret;
4938         }
4939 #endif /* CONFIG_DRIVER_NL80211_QCA */
4940
4941         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4942         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4943         if (!msg)
4944                 return -1;
4945
4946         ret = nl80211_connect_common(drv, params, msg);
4947         if (ret)
4948                 goto fail;
4949
4950         algs = 0;
4951         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4952                 algs++;
4953         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4954                 algs++;
4955         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4956                 algs++;
4957         if (algs > 1) {
4958                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4959                            "selection");
4960                 goto skip_auth_type;
4961         }
4962
4963         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4964                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4965         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4966                 type = NL80211_AUTHTYPE_SHARED_KEY;
4967         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4968                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4969         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4970                 type = NL80211_AUTHTYPE_FT;
4971         else
4972                 goto fail;
4973
4974         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4975         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4976                 goto fail;
4977
4978 skip_auth_type:
4979         ret = nl80211_set_conn_keys(params, msg);
4980         if (ret)
4981                 goto fail;
4982
4983         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4984         msg = NULL;
4985         if (ret) {
4986                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4987                            "(%s)", ret, strerror(-ret));
4988         } else {
4989                 wpa_printf(MSG_DEBUG,
4990                            "nl80211: Connect request send successfully");
4991         }
4992
4993 fail:
4994         nlmsg_free(msg);
4995         return ret;
4996
4997 }
4998
4999
5000 static int wpa_driver_nl80211_connect(
5001         struct wpa_driver_nl80211_data *drv,
5002         struct wpa_driver_associate_params *params)
5003 {
5004         int ret;
5005
5006         /* Store the connection attempted bssid for future use */
5007         if (params->bssid)
5008                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5009         else
5010                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5011
5012         ret = wpa_driver_nl80211_try_connect(drv, params);
5013         if (ret == -EALREADY) {
5014                 /*
5015                  * cfg80211 does not currently accept new connections if
5016                  * we are already connected. As a workaround, force
5017                  * disconnection and try again.
5018                  */
5019                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5020                            "disconnecting before reassociation "
5021                            "attempt");
5022                 if (wpa_driver_nl80211_disconnect(
5023                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5024                         return -1;
5025                 ret = wpa_driver_nl80211_try_connect(drv, params);
5026         }
5027         return ret;
5028 }
5029
5030
5031 static int wpa_driver_nl80211_associate(
5032         void *priv, struct wpa_driver_associate_params *params)
5033 {
5034         struct i802_bss *bss = priv;
5035         struct wpa_driver_nl80211_data *drv = bss->drv;
5036         int ret = -1;
5037         struct nl_msg *msg;
5038
5039         nl80211_unmask_11b_rates(bss);
5040
5041         if (params->mode == IEEE80211_MODE_AP)
5042                 return wpa_driver_nl80211_ap(drv, params);
5043
5044         if (params->mode == IEEE80211_MODE_IBSS)
5045                 return wpa_driver_nl80211_ibss(drv, params);
5046
5047         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5048                 enum nl80211_iftype nlmode = params->p2p ?
5049                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5050
5051                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5052                         return -1;
5053                 return wpa_driver_nl80211_connect(drv, params);
5054         }
5055
5056         nl80211_mark_disconnected(drv);
5057
5058         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5059                    drv->ifindex);
5060         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
5061         if (!msg)
5062                 return -1;
5063
5064         ret = nl80211_connect_common(drv, params, msg);
5065         if (ret)
5066                 goto fail;
5067
5068         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5069         msg = NULL;
5070         if (ret) {
5071                 wpa_dbg(drv->ctx, MSG_DEBUG,
5072                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
5073                         ret, strerror(-ret));
5074                 nl80211_dump_scan(drv);
5075         } else {
5076                 wpa_printf(MSG_DEBUG,
5077                            "nl80211: Association request send successfully");
5078         }
5079
5080 fail:
5081         nlmsg_free(msg);
5082         return ret;
5083 }
5084
5085
5086 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5087                             int ifindex, enum nl80211_iftype mode)
5088 {
5089         struct nl_msg *msg;
5090         int ret = -ENOBUFS;
5091
5092         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5093                    ifindex, mode, nl80211_iftype_str(mode));
5094
5095         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
5096         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
5097                 goto fail;
5098
5099         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5100         msg = NULL;
5101         if (!ret)
5102                 return 0;
5103 fail:
5104         nlmsg_free(msg);
5105         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5106                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5107         return ret;
5108 }
5109
5110
5111 static int wpa_driver_nl80211_set_mode_impl(
5112                 struct i802_bss *bss,
5113                 enum nl80211_iftype nlmode,
5114                 struct hostapd_freq_params *desired_freq_params)
5115 {
5116         struct wpa_driver_nl80211_data *drv = bss->drv;
5117         int ret = -1;
5118         int i;
5119         int was_ap = is_ap_interface(drv->nlmode);
5120         int res;
5121         int mode_switch_res;
5122
5123         if (TEST_FAIL())
5124                 return -1;
5125
5126         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5127         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5128                 mode_switch_res = 0;
5129
5130         if (mode_switch_res == 0) {
5131                 drv->nlmode = nlmode;
5132                 ret = 0;
5133                 goto done;
5134         }
5135
5136         if (mode_switch_res == -ENODEV)
5137                 return -1;
5138
5139         if (nlmode == drv->nlmode) {
5140                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5141                            "requested mode - ignore error");
5142                 ret = 0;
5143                 goto done; /* Already in the requested mode */
5144         }
5145
5146         /* mac80211 doesn't allow mode changes while the device is up, so
5147          * take the device down, try to set the mode again, and bring the
5148          * device back up.
5149          */
5150         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5151                    "interface down");
5152         for (i = 0; i < 10; i++) {
5153                 res = i802_set_iface_flags(bss, 0);
5154                 if (res == -EACCES || res == -ENODEV)
5155                         break;
5156                 if (res != 0) {
5157                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5158                                    "interface down");
5159                         os_sleep(0, 100000);
5160                         continue;
5161                 }
5162
5163                 /*
5164                  * Setting the mode will fail for some drivers if the phy is
5165                  * on a frequency that the mode is disallowed in.
5166                  */
5167                 if (desired_freq_params) {
5168                         res = nl80211_set_channel(bss, desired_freq_params, 0);
5169                         if (res) {
5170                                 wpa_printf(MSG_DEBUG,
5171                                            "nl80211: Failed to set frequency on interface");
5172                         }
5173                 }
5174
5175                 /* Try to set the mode again while the interface is down */
5176                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5177                 if (mode_switch_res == -EBUSY) {
5178                         wpa_printf(MSG_DEBUG,
5179                                    "nl80211: Delaying mode set while interface going down");
5180                         os_sleep(0, 100000);
5181                         continue;
5182                 }
5183                 ret = mode_switch_res;
5184                 break;
5185         }
5186
5187         if (!ret) {
5188                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5189                            "interface is down");
5190                 drv->nlmode = nlmode;
5191                 drv->ignore_if_down_event = 1;
5192         }
5193
5194         /* Bring the interface back up */
5195         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5196         if (res != 0) {
5197                 wpa_printf(MSG_DEBUG,
5198                            "nl80211: Failed to set interface up after switching mode");
5199                 ret = -1;
5200         }
5201
5202 done:
5203         if (ret) {
5204                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5205                            "from %d failed", nlmode, drv->nlmode);
5206                 return ret;
5207         }
5208
5209         if (is_p2p_net_interface(nlmode)) {
5210                 wpa_printf(MSG_DEBUG,
5211                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
5212                            bss->ifname);
5213                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5214         } else if (drv->disabled_11b_rates) {
5215                 wpa_printf(MSG_DEBUG,
5216                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
5217                            bss->ifname);
5218                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5219         }
5220
5221         if (is_ap_interface(nlmode)) {
5222                 nl80211_mgmt_unsubscribe(bss, "start AP");
5223                 /* Setup additional AP mode functionality if needed */
5224                 if (nl80211_setup_ap(bss))
5225                         return -1;
5226         } else if (was_ap) {
5227                 /* Remove additional AP mode functionality */
5228                 nl80211_teardown_ap(bss);
5229         } else {
5230                 nl80211_mgmt_unsubscribe(bss, "mode change");
5231         }
5232
5233         if (is_mesh_interface(nlmode) &&
5234             nl80211_mgmt_subscribe_mesh(bss))
5235                 return -1;
5236
5237         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5238             !is_mesh_interface(nlmode) &&
5239             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5240                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5241                            "frame processing - ignore for now");
5242
5243         return 0;
5244 }
5245
5246
5247 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5248                                 enum nl80211_iftype nlmode)
5249 {
5250         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5251 }
5252
5253
5254 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5255                                             struct hostapd_freq_params *freq)
5256 {
5257         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5258                                                 freq);
5259 }
5260
5261
5262 static int wpa_driver_nl80211_get_capa(void *priv,
5263                                        struct wpa_driver_capa *capa)
5264 {
5265         struct i802_bss *bss = priv;
5266         struct wpa_driver_nl80211_data *drv = bss->drv;
5267
5268         if (!drv->has_capability)
5269                 return -1;
5270         os_memcpy(capa, &drv->capa, sizeof(*capa));
5271         if (drv->extended_capa && drv->extended_capa_mask) {
5272                 capa->extended_capa = drv->extended_capa;
5273                 capa->extended_capa_mask = drv->extended_capa_mask;
5274                 capa->extended_capa_len = drv->extended_capa_len;
5275         }
5276
5277         return 0;
5278 }
5279
5280
5281 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5282 {
5283         struct i802_bss *bss = priv;
5284         struct wpa_driver_nl80211_data *drv = bss->drv;
5285
5286         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5287                    bss->ifname, drv->operstate, state,
5288                    state ? "UP" : "DORMANT");
5289         drv->operstate = state;
5290         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5291                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5292 }
5293
5294
5295 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5296 {
5297         struct i802_bss *bss = priv;
5298         struct wpa_driver_nl80211_data *drv = bss->drv;
5299         struct nl_msg *msg;
5300         struct nl80211_sta_flag_update upd;
5301         int ret;
5302
5303         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5304                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5305                 return 0;
5306         }
5307
5308         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5309                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5310
5311         os_memset(&upd, 0, sizeof(upd));
5312         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5313         if (authorized)
5314                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5315
5316         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5317             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5318             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5319                 nlmsg_free(msg);
5320                 return -ENOBUFS;
5321         }
5322
5323         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5324         if (!ret)
5325                 return 0;
5326         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5327                    ret, strerror(-ret));
5328         return ret;
5329 }
5330
5331
5332 /* Set kernel driver on given frequency (MHz) */
5333 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5334 {
5335         struct i802_bss *bss = priv;
5336         return nl80211_set_channel(bss, freq, 0);
5337 }
5338
5339
5340 static inline int min_int(int a, int b)
5341 {
5342         if (a < b)
5343                 return a;
5344         return b;
5345 }
5346
5347
5348 static int get_key_handler(struct nl_msg *msg, void *arg)
5349 {
5350         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5351         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5352
5353         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5354                   genlmsg_attrlen(gnlh, 0), NULL);
5355
5356         /*
5357          * TODO: validate the key index and mac address!
5358          * Otherwise, there's a race condition as soon as
5359          * the kernel starts sending key notifications.
5360          */
5361
5362         if (tb[NL80211_ATTR_KEY_SEQ])
5363                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5364                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5365         return NL_SKIP;
5366 }
5367
5368
5369 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5370                            int idx, u8 *seq)
5371 {
5372         struct i802_bss *bss = priv;
5373         struct wpa_driver_nl80211_data *drv = bss->drv;
5374         struct nl_msg *msg;
5375
5376         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5377                                   NL80211_CMD_GET_KEY);
5378         if (!msg ||
5379             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5380             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5381                 nlmsg_free(msg);
5382                 return -ENOBUFS;
5383         }
5384
5385         memset(seq, 0, 6);
5386
5387         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5388 }
5389
5390
5391 static int i802_set_rts(void *priv, int rts)
5392 {
5393         struct i802_bss *bss = priv;
5394         struct wpa_driver_nl80211_data *drv = bss->drv;
5395         struct nl_msg *msg;
5396         int ret;
5397         u32 val;
5398
5399         if (rts >= 2347)
5400                 val = (u32) -1;
5401         else
5402                 val = rts;
5403
5404         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5405             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5406                 nlmsg_free(msg);
5407                 return -ENOBUFS;
5408         }
5409
5410         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5411         if (!ret)
5412                 return 0;
5413         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5414                    "%d (%s)", rts, ret, strerror(-ret));
5415         return ret;
5416 }
5417
5418
5419 static int i802_set_frag(void *priv, int frag)
5420 {
5421         struct i802_bss *bss = priv;
5422         struct wpa_driver_nl80211_data *drv = bss->drv;
5423         struct nl_msg *msg;
5424         int ret;
5425         u32 val;
5426
5427         if (frag >= 2346)
5428                 val = (u32) -1;
5429         else
5430                 val = frag;
5431
5432         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5433             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5434                 nlmsg_free(msg);
5435                 return -ENOBUFS;
5436         }
5437
5438         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5439         if (!ret)
5440                 return 0;
5441         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5442                    "%d: %d (%s)", frag, ret, strerror(-ret));
5443         return ret;
5444 }
5445
5446
5447 static int i802_flush(void *priv)
5448 {
5449         struct i802_bss *bss = priv;
5450         struct nl_msg *msg;
5451         int res;
5452
5453         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5454                    bss->ifname);
5455
5456         /*
5457          * XXX: FIX! this needs to flush all VLANs too
5458          */
5459         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5460         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5461         if (res) {
5462                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5463                            "(%s)", res, strerror(-res));
5464         }
5465         return res;
5466 }
5467
5468
5469 static int get_sta_handler(struct nl_msg *msg, void *arg)
5470 {
5471         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5472         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5473         struct hostap_sta_driver_data *data = arg;
5474         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5475         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5476                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5477                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5478                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5479                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5480                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5481                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5482                 [NL80211_STA_INFO_RX_BYTES64] = { .type = NLA_U64 },
5483                 [NL80211_STA_INFO_TX_BYTES64] = { .type = NLA_U64 },
5484         };
5485
5486         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5487                   genlmsg_attrlen(gnlh, 0), NULL);
5488
5489         /*
5490          * TODO: validate the interface and mac address!
5491          * Otherwise, there's a race condition as soon as
5492          * the kernel starts sending station notifications.
5493          */
5494
5495         if (!tb[NL80211_ATTR_STA_INFO]) {
5496                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5497                 return NL_SKIP;
5498         }
5499         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5500                              tb[NL80211_ATTR_STA_INFO],
5501                              stats_policy)) {
5502                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5503                 return NL_SKIP;
5504         }
5505
5506         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5507                 data->inactive_msec =
5508                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5509         /* For backwards compatibility, fetch the 32-bit counters first. */
5510         if (stats[NL80211_STA_INFO_RX_BYTES])
5511                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5512         if (stats[NL80211_STA_INFO_TX_BYTES])
5513                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5514         if (stats[NL80211_STA_INFO_RX_BYTES64] &&
5515             stats[NL80211_STA_INFO_TX_BYTES64]) {
5516                 /*
5517                  * The driver supports 64-bit counters, so use them to override
5518                  * the 32-bit values.
5519                  */
5520                 data->rx_bytes =
5521                         nla_get_u64(stats[NL80211_STA_INFO_RX_BYTES64]);
5522                 data->tx_bytes =
5523                         nla_get_u64(stats[NL80211_STA_INFO_TX_BYTES64]);
5524                 data->bytes_64bit = 1;
5525         }
5526         if (stats[NL80211_STA_INFO_RX_PACKETS])
5527                 data->rx_packets =
5528                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5529         if (stats[NL80211_STA_INFO_TX_PACKETS])
5530                 data->tx_packets =
5531                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5532         if (stats[NL80211_STA_INFO_TX_FAILED])
5533                 data->tx_retry_failed =
5534                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5535
5536         return NL_SKIP;
5537 }
5538
5539 static int i802_read_sta_data(struct i802_bss *bss,
5540                               struct hostap_sta_driver_data *data,
5541                               const u8 *addr)
5542 {
5543         struct nl_msg *msg;
5544
5545         os_memset(data, 0, sizeof(*data));
5546
5547         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5548             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5549                 nlmsg_free(msg);
5550                 return -ENOBUFS;
5551         }
5552
5553         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5554 }
5555
5556
5557 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5558                                     int cw_min, int cw_max, int burst_time)
5559 {
5560         struct i802_bss *bss = priv;
5561         struct wpa_driver_nl80211_data *drv = bss->drv;
5562         struct nl_msg *msg;
5563         struct nlattr *txq, *params;
5564
5565         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5566         if (!msg)
5567                 return -1;
5568
5569         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5570         if (!txq)
5571                 goto fail;
5572
5573         /* We are only sending parameters for a single TXQ at a time */
5574         params = nla_nest_start(msg, 1);
5575         if (!params)
5576                 goto fail;
5577
5578         switch (queue) {
5579         case 0:
5580                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5581                         goto fail;
5582                 break;
5583         case 1:
5584                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5585                         goto fail;
5586                 break;
5587         case 2:
5588                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5589                         goto fail;
5590                 break;
5591         case 3:
5592                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5593                         goto fail;
5594                 break;
5595         }
5596         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5597          * 32 usec, so need to convert the value here. */
5598         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5599                         (burst_time * 100 + 16) / 32) ||
5600             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5601             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5602             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5603                 goto fail;
5604
5605         nla_nest_end(msg, params);
5606
5607         nla_nest_end(msg, txq);
5608
5609         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5610                 return 0;
5611         msg = NULL;
5612 fail:
5613         nlmsg_free(msg);
5614         return -1;
5615 }
5616
5617
5618 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5619                              const char *ifname, int vlan_id)
5620 {
5621         struct wpa_driver_nl80211_data *drv = bss->drv;
5622         struct nl_msg *msg;
5623         int ret;
5624
5625         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5626                    ", ifname=%s[%d], vlan_id=%d)",
5627                    bss->ifname, if_nametoindex(bss->ifname),
5628                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5629         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5630             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5631             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5632                 nlmsg_free(msg);
5633                 return -ENOBUFS;
5634         }
5635
5636         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5637         if (ret < 0) {
5638                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5639                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5640                            MAC2STR(addr), ifname, vlan_id, ret,
5641                            strerror(-ret));
5642         }
5643         return ret;
5644 }
5645
5646
5647 static int i802_get_inact_sec(void *priv, const u8 *addr)
5648 {
5649         struct hostap_sta_driver_data data;
5650         int ret;
5651
5652         data.inactive_msec = (unsigned long) -1;
5653         ret = i802_read_sta_data(priv, &data, addr);
5654         if (ret == -ENOENT)
5655                 return -ENOENT;
5656         if (ret || data.inactive_msec == (unsigned long) -1)
5657                 return -1;
5658         return data.inactive_msec / 1000;
5659 }
5660
5661
5662 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5663 {
5664 #if 0
5665         /* TODO */
5666 #endif
5667         return 0;
5668 }
5669
5670
5671 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5672                            int reason)
5673 {
5674         struct i802_bss *bss = priv;
5675         struct wpa_driver_nl80211_data *drv = bss->drv;
5676         struct ieee80211_mgmt mgmt;
5677
5678         if (is_mesh_interface(drv->nlmode))
5679                 return -1;
5680
5681         if (drv->device_ap_sme)
5682                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5683
5684         memset(&mgmt, 0, sizeof(mgmt));
5685         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5686                                           WLAN_FC_STYPE_DEAUTH);
5687         memcpy(mgmt.da, addr, ETH_ALEN);
5688         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5689         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5690         mgmt.u.deauth.reason_code = host_to_le16(reason);
5691         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5692                                             IEEE80211_HDRLEN +
5693                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5694                                             0, NULL, 0);
5695 }
5696
5697
5698 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5699                              int reason)
5700 {
5701         struct i802_bss *bss = priv;
5702         struct wpa_driver_nl80211_data *drv = bss->drv;
5703         struct ieee80211_mgmt mgmt;
5704
5705         if (is_mesh_interface(drv->nlmode))
5706                 return -1;
5707
5708         if (drv->device_ap_sme)
5709                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5710
5711         memset(&mgmt, 0, sizeof(mgmt));
5712         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5713                                           WLAN_FC_STYPE_DISASSOC);
5714         memcpy(mgmt.da, addr, ETH_ALEN);
5715         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5716         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5717         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5718         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5719                                             IEEE80211_HDRLEN +
5720                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5721                                             0, NULL, 0);
5722 }
5723
5724
5725 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5726 {
5727         char buf[200], *pos, *end;
5728         int i, res;
5729
5730         pos = buf;
5731         end = pos + sizeof(buf);
5732
5733         for (i = 0; i < drv->num_if_indices; i++) {
5734                 if (!drv->if_indices[i])
5735                         continue;
5736                 res = os_snprintf(pos, end - pos, " %d(%d)",
5737                                   drv->if_indices[i],
5738                                   drv->if_indices_reason[i]);
5739                 if (os_snprintf_error(end - pos, res))
5740                         break;
5741                 pos += res;
5742         }
5743         *pos = '\0';
5744
5745         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5746                    drv->num_if_indices, buf);
5747 }
5748
5749
5750 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5751                       int ifidx_reason)
5752 {
5753         int i;
5754         int *old, *old_reason;
5755
5756         wpa_printf(MSG_DEBUG,
5757                    "nl80211: Add own interface ifindex %d (ifidx_reason %d)",
5758                    ifidx, ifidx_reason);
5759         if (have_ifidx(drv, ifidx, ifidx_reason)) {
5760                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5761                            ifidx);
5762                 return;
5763         }
5764         for (i = 0; i < drv->num_if_indices; i++) {
5765                 if (drv->if_indices[i] == 0) {
5766                         drv->if_indices[i] = ifidx;
5767                         drv->if_indices_reason[i] = ifidx_reason;
5768                         dump_ifidx(drv);
5769                         return;
5770                 }
5771         }
5772
5773         if (drv->if_indices != drv->default_if_indices)
5774                 old = drv->if_indices;
5775         else
5776                 old = NULL;
5777
5778         if (drv->if_indices_reason != drv->default_if_indices_reason)
5779                 old_reason = drv->if_indices_reason;
5780         else
5781                 old_reason = NULL;
5782
5783         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5784                                            sizeof(int));
5785         drv->if_indices_reason = os_realloc_array(old_reason,
5786                                                   drv->num_if_indices + 1,
5787                                                   sizeof(int));
5788         if (!drv->if_indices) {
5789                 if (!old)
5790                         drv->if_indices = drv->default_if_indices;
5791                 else
5792                         drv->if_indices = old;
5793         }
5794         if (!drv->if_indices_reason) {
5795                 if (!old_reason)
5796                         drv->if_indices_reason = drv->default_if_indices_reason;
5797                 else
5798                         drv->if_indices_reason = old_reason;
5799         }
5800         if (!drv->if_indices || !drv->if_indices_reason) {
5801                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5802                            "interfaces");
5803                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5804                 return;
5805         }
5806         if (!old)
5807                 os_memcpy(drv->if_indices, drv->default_if_indices,
5808                           sizeof(drv->default_if_indices));
5809         if (!old_reason)
5810                 os_memcpy(drv->if_indices_reason,
5811                           drv->default_if_indices_reason,
5812                           sizeof(drv->default_if_indices_reason));
5813         drv->if_indices[drv->num_if_indices] = ifidx;
5814         drv->if_indices_reason[drv->num_if_indices] = ifidx_reason;
5815         drv->num_if_indices++;
5816         dump_ifidx(drv);
5817 }
5818
5819
5820 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5821                       int ifidx_reason)
5822 {
5823         int i;
5824
5825         for (i = 0; i < drv->num_if_indices; i++) {
5826                 if ((drv->if_indices[i] == ifidx || ifidx == IFIDX_ANY) &&
5827                     (drv->if_indices_reason[i] == ifidx_reason ||
5828                      ifidx_reason == IFIDX_ANY)) {
5829                         drv->if_indices[i] = 0;
5830                         break;
5831                 }
5832         }
5833         dump_ifidx(drv);
5834 }
5835
5836
5837 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5838                       int ifidx_reason)
5839 {
5840         int i;
5841
5842         for (i = 0; i < drv->num_if_indices; i++)
5843                 if (drv->if_indices[i] == ifidx &&
5844                     (drv->if_indices_reason[i] == ifidx_reason ||
5845                      ifidx_reason == IFIDX_ANY))
5846                         return 1;
5847
5848         return 0;
5849 }
5850
5851
5852 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5853                             const char *bridge_ifname, char *ifname_wds)
5854 {
5855         struct i802_bss *bss = priv;
5856         struct wpa_driver_nl80211_data *drv = bss->drv;
5857         char name[IFNAMSIZ + 1];
5858
5859         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5860         if (ifname_wds)
5861                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5862
5863         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5864                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5865         if (val) {
5866                 if (!if_nametoindex(name)) {
5867                         if (nl80211_create_iface(drv, name,
5868                                                  NL80211_IFTYPE_AP_VLAN,
5869                                                  bss->addr, 1, NULL, NULL, 0) <
5870                             0)
5871                                 return -1;
5872                         if (bridge_ifname &&
5873                             linux_br_add_if(drv->global->ioctl_sock,
5874                                             bridge_ifname, name) < 0)
5875                                 return -1;
5876                 }
5877                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5878                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5879                                    "interface %s up", name);
5880                 }
5881                 return i802_set_sta_vlan(priv, addr, name, 0);
5882         } else {
5883                 if (bridge_ifname)
5884                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5885                                         name);
5886
5887                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5888                 nl80211_remove_iface(drv, if_nametoindex(name));
5889                 return 0;
5890         }
5891 }
5892
5893
5894 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5895 {
5896         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5897         struct sockaddr_ll lladdr;
5898         unsigned char buf[3000];
5899         int len;
5900         socklen_t fromlen = sizeof(lladdr);
5901
5902         len = recvfrom(sock, buf, sizeof(buf), 0,
5903                        (struct sockaddr *)&lladdr, &fromlen);
5904         if (len < 0) {
5905                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5906                            strerror(errno));
5907                 return;
5908         }
5909
5910         if (have_ifidx(drv, lladdr.sll_ifindex, IFIDX_ANY))
5911                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5912 }
5913
5914
5915 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5916                              struct i802_bss *bss,
5917                              const char *brname, const char *ifname)
5918 {
5919         int br_ifindex;
5920         char in_br[IFNAMSIZ];
5921
5922         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5923         br_ifindex = if_nametoindex(brname);
5924         if (br_ifindex == 0) {
5925                 /*
5926                  * Bridge was configured, but the bridge device does
5927                  * not exist. Try to add it now.
5928                  */
5929                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5930                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5931                                    "bridge interface %s: %s",
5932                                    brname, strerror(errno));
5933                         return -1;
5934                 }
5935                 bss->added_bridge = 1;
5936                 br_ifindex = if_nametoindex(brname);
5937                 add_ifidx(drv, br_ifindex, drv->ifindex);
5938         }
5939         bss->br_ifindex = br_ifindex;
5940
5941         if (linux_br_get(in_br, ifname) == 0) {
5942                 if (os_strcmp(in_br, brname) == 0)
5943                         return 0; /* already in the bridge */
5944
5945                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5946                            "bridge %s", ifname, in_br);
5947                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5948                     0) {
5949                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5950                                    "remove interface %s from bridge "
5951                                    "%s: %s",
5952                                    ifname, brname, strerror(errno));
5953                         return -1;
5954                 }
5955         }
5956
5957         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5958                    ifname, brname);
5959         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5960                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5961                            "into bridge %s: %s",
5962                            ifname, brname, strerror(errno));
5963                 return -1;
5964         }
5965         bss->added_if_into_bridge = 1;
5966
5967         return 0;
5968 }
5969
5970
5971 static void *i802_init(struct hostapd_data *hapd,
5972                        struct wpa_init_params *params)
5973 {
5974         struct wpa_driver_nl80211_data *drv;
5975         struct i802_bss *bss;
5976         size_t i;
5977         char master_ifname[IFNAMSIZ];
5978         int ifindex, br_ifindex = 0;
5979         int br_added = 0;
5980
5981         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5982                                           params->global_priv, 1,
5983                                           params->bssid, params->driver_params);
5984         if (bss == NULL)
5985                 return NULL;
5986
5987         drv = bss->drv;
5988
5989         if (linux_br_get(master_ifname, params->ifname) == 0) {
5990                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5991                            params->ifname, master_ifname);
5992                 br_ifindex = if_nametoindex(master_ifname);
5993                 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
5994         } else if ((params->num_bridge == 0 || !params->bridge[0]) &&
5995                    linux_master_get(master_ifname, params->ifname) == 0) {
5996                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in master %s",
5997                         params->ifname, master_ifname);
5998                 /* start listening for EAPOL on the master interface */
5999                 add_ifidx(drv, if_nametoindex(master_ifname), drv->ifindex);
6000
6001                 /* check if master itself is under bridge */
6002                 if (linux_br_get(master_ifname, master_ifname) == 0) {
6003                         wpa_printf(MSG_DEBUG, "nl80211: which is in bridge %s",
6004                                    master_ifname);
6005                         br_ifindex = if_nametoindex(master_ifname);
6006                         os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
6007                 }
6008         } else {
6009                 master_ifname[0] = '\0';
6010         }
6011
6012         bss->br_ifindex = br_ifindex;
6013
6014         for (i = 0; i < params->num_bridge; i++) {
6015                 if (params->bridge[i]) {
6016                         ifindex = if_nametoindex(params->bridge[i]);
6017                         if (ifindex)
6018                                 add_ifidx(drv, ifindex, drv->ifindex);
6019                         if (ifindex == br_ifindex)
6020                                 br_added = 1;
6021                 }
6022         }
6023
6024         /* start listening for EAPOL on the default AP interface */
6025         add_ifidx(drv, drv->ifindex, IFIDX_ANY);
6026
6027         if (params->num_bridge && params->bridge[0]) {
6028                 if (i802_check_bridge(drv, bss, params->bridge[0],
6029                                       params->ifname) < 0)
6030                         goto failed;
6031                 if (os_strcmp(params->bridge[0], master_ifname) != 0)
6032                         br_added = 1;
6033         }
6034
6035         if (!br_added && br_ifindex &&
6036             (params->num_bridge == 0 || !params->bridge[0]))
6037                 add_ifidx(drv, br_ifindex, drv->ifindex);
6038
6039 #ifdef CONFIG_LIBNL3_ROUTE
6040         if (bss->added_if_into_bridge) {
6041                 drv->rtnl_sk = nl_socket_alloc();
6042                 if (drv->rtnl_sk == NULL) {
6043                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6044                         goto failed;
6045                 }
6046
6047                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6048                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6049                                    strerror(errno));
6050                         goto failed;
6051                 }
6052         }
6053 #endif /* CONFIG_LIBNL3_ROUTE */
6054
6055         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6056         if (drv->eapol_sock < 0) {
6057                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6058                            strerror(errno));
6059                 goto failed;
6060         }
6061
6062         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6063         {
6064                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6065                 goto failed;
6066         }
6067
6068         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6069                                params->own_addr))
6070                 goto failed;
6071         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6072
6073         memcpy(bss->addr, params->own_addr, ETH_ALEN);
6074
6075         return bss;
6076
6077 failed:
6078         wpa_driver_nl80211_deinit(bss);
6079         return NULL;
6080 }
6081
6082
6083 static void i802_deinit(void *priv)
6084 {
6085         struct i802_bss *bss = priv;
6086         wpa_driver_nl80211_deinit(bss);
6087 }
6088
6089
6090 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6091         enum wpa_driver_if_type type)
6092 {
6093         switch (type) {
6094         case WPA_IF_STATION:
6095                 return NL80211_IFTYPE_STATION;
6096         case WPA_IF_P2P_CLIENT:
6097         case WPA_IF_P2P_GROUP:
6098                 return NL80211_IFTYPE_P2P_CLIENT;
6099         case WPA_IF_AP_VLAN:
6100                 return NL80211_IFTYPE_AP_VLAN;
6101         case WPA_IF_AP_BSS:
6102                 return NL80211_IFTYPE_AP;
6103         case WPA_IF_P2P_GO:
6104                 return NL80211_IFTYPE_P2P_GO;
6105         case WPA_IF_P2P_DEVICE:
6106                 return NL80211_IFTYPE_P2P_DEVICE;
6107         case WPA_IF_MESH:
6108                 return NL80211_IFTYPE_MESH_POINT;
6109         default:
6110                 return -1;
6111         }
6112 }
6113
6114
6115 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6116 {
6117         struct wpa_driver_nl80211_data *drv;
6118         dl_list_for_each(drv, &global->interfaces,
6119                          struct wpa_driver_nl80211_data, list) {
6120                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6121                         return 1;
6122         }
6123         return 0;
6124 }
6125
6126
6127 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
6128 {
6129         unsigned int idx;
6130
6131         if (!drv->global)
6132                 return -1;
6133
6134         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6135         for (idx = 0; idx < 64; idx++) {
6136                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6137                 new_addr[0] ^= idx << 2;
6138                 if (!nl80211_addr_in_use(drv->global, new_addr))
6139                         break;
6140         }
6141         if (idx == 64)
6142                 return -1;
6143
6144         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
6145                    MACSTR, MAC2STR(new_addr));
6146
6147         return 0;
6148 }
6149
6150
6151 struct wdev_info {
6152         u64 wdev_id;
6153         int wdev_id_set;
6154         u8 macaddr[ETH_ALEN];
6155 };
6156
6157 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6158 {
6159         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6160         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6161         struct wdev_info *wi = arg;
6162
6163         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6164                   genlmsg_attrlen(gnlh, 0), NULL);
6165         if (tb[NL80211_ATTR_WDEV]) {
6166                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6167                 wi->wdev_id_set = 1;
6168         }
6169
6170         if (tb[NL80211_ATTR_MAC])
6171                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6172                           ETH_ALEN);
6173
6174         return NL_SKIP;
6175 }
6176
6177
6178 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6179                                      const char *ifname, const u8 *addr,
6180                                      void *bss_ctx, void **drv_priv,
6181                                      char *force_ifname, u8 *if_addr,
6182                                      const char *bridge, int use_existing,
6183                                      int setup_ap)
6184 {
6185         enum nl80211_iftype nlmode;
6186         struct i802_bss *bss = priv;
6187         struct wpa_driver_nl80211_data *drv = bss->drv;
6188         int ifidx;
6189         int added = 1;
6190
6191         if (addr)
6192                 os_memcpy(if_addr, addr, ETH_ALEN);
6193         nlmode = wpa_driver_nl80211_if_type(type);
6194         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6195                 struct wdev_info p2pdev_info;
6196
6197                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6198                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6199                                              0, nl80211_wdev_handler,
6200                                              &p2pdev_info, use_existing);
6201                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6202                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6203                                    ifname);
6204                         return -1;
6205                 }
6206
6207                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6208                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6209                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6210                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6211                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6212                            ifname,
6213                            (long long unsigned int) p2pdev_info.wdev_id);
6214         } else {
6215                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6216                                              0, NULL, NULL, use_existing);
6217                 if (use_existing && ifidx == -ENFILE) {
6218                         added = 0;
6219                         ifidx = if_nametoindex(ifname);
6220                 } else if (ifidx < 0) {
6221                         return -1;
6222                 }
6223         }
6224
6225         if (!addr) {
6226                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
6227                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6228                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6229                                             ifname, if_addr) < 0) {
6230                         if (added)
6231                                 nl80211_remove_iface(drv, ifidx);
6232                         return -1;
6233                 }
6234         }
6235
6236         if (!addr &&
6237             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6238              type == WPA_IF_P2P_GO || type == WPA_IF_MESH ||
6239              type == WPA_IF_STATION)) {
6240                 /* Enforce unique address */
6241                 u8 new_addr[ETH_ALEN];
6242
6243                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6244                                        new_addr) < 0) {
6245                         if (added)
6246                                 nl80211_remove_iface(drv, ifidx);
6247                         return -1;
6248                 }
6249                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6250                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6251                                    "for interface %s type %d", ifname, type);
6252                         if (nl80211_vif_addr(drv, new_addr) < 0) {
6253                                 if (added)
6254                                         nl80211_remove_iface(drv, ifidx);
6255                                 return -1;
6256                         }
6257                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6258                                                new_addr) < 0) {
6259                                 if (added)
6260                                         nl80211_remove_iface(drv, ifidx);
6261                                 return -1;
6262                         }
6263                 }
6264                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6265         }
6266
6267         if (type == WPA_IF_AP_BSS && setup_ap) {
6268                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6269                 if (new_bss == NULL) {
6270                         if (added)
6271                                 nl80211_remove_iface(drv, ifidx);
6272                         return -1;
6273                 }
6274
6275                 if (bridge &&
6276                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6277                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6278                                    "interface %s to a bridge %s",
6279                                    ifname, bridge);
6280                         if (added)
6281                                 nl80211_remove_iface(drv, ifidx);
6282                         os_free(new_bss);
6283                         return -1;
6284                 }
6285
6286                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6287                 {
6288                         if (added)
6289                                 nl80211_remove_iface(drv, ifidx);
6290                         os_free(new_bss);
6291                         return -1;
6292                 }
6293                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6294                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6295                 new_bss->ifindex = ifidx;
6296                 new_bss->drv = drv;
6297                 new_bss->next = drv->first_bss->next;
6298                 new_bss->freq = drv->first_bss->freq;
6299                 new_bss->ctx = bss_ctx;
6300                 new_bss->added_if = added;
6301                 drv->first_bss->next = new_bss;
6302                 if (drv_priv)
6303                         *drv_priv = new_bss;
6304                 nl80211_init_bss(new_bss);
6305
6306                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6307                 if (nl80211_setup_ap(new_bss))
6308                         return -1;
6309         }
6310
6311         if (drv->global)
6312                 drv->global->if_add_ifindex = ifidx;
6313
6314         /*
6315          * Some virtual interfaces need to process EAPOL packets and events on
6316          * the parent interface. This is used mainly with hostapd.
6317          */
6318         if (ifidx > 0 &&
6319             (drv->hostapd ||
6320              nlmode == NL80211_IFTYPE_AP_VLAN ||
6321              nlmode == NL80211_IFTYPE_WDS ||
6322              nlmode == NL80211_IFTYPE_MONITOR))
6323                 add_ifidx(drv, ifidx, IFIDX_ANY);
6324
6325         return 0;
6326 }
6327
6328
6329 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6330                                         enum wpa_driver_if_type type,
6331                                         const char *ifname)
6332 {
6333         struct wpa_driver_nl80211_data *drv = bss->drv;
6334         int ifindex = if_nametoindex(ifname);
6335
6336         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6337                    __func__, type, ifname, ifindex, bss->added_if);
6338         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6339                 nl80211_remove_iface(drv, ifindex);
6340         else if (ifindex > 0 && !bss->added_if) {
6341                 struct wpa_driver_nl80211_data *drv2;
6342                 dl_list_for_each(drv2, &drv->global->interfaces,
6343                                  struct wpa_driver_nl80211_data, list) {
6344                         del_ifidx(drv2, ifindex, IFIDX_ANY);
6345                         del_ifidx(drv2, IFIDX_ANY, ifindex);
6346                 }
6347         }
6348
6349         if (type != WPA_IF_AP_BSS)
6350                 return 0;
6351
6352         if (bss->added_if_into_bridge) {
6353                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6354                                     bss->ifname) < 0)
6355                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6356                                    "interface %s from bridge %s: %s",
6357                                    bss->ifname, bss->brname, strerror(errno));
6358         }
6359         if (bss->added_bridge) {
6360                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6361                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6362                                    "bridge %s: %s",
6363                                    bss->brname, strerror(errno));
6364         }
6365
6366         if (bss != drv->first_bss) {
6367                 struct i802_bss *tbss;
6368
6369                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6370                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6371                         if (tbss->next == bss) {
6372                                 tbss->next = bss->next;
6373                                 /* Unsubscribe management frames */
6374                                 nl80211_teardown_ap(bss);
6375                                 nl80211_destroy_bss(bss);
6376                                 if (!bss->added_if)
6377                                         i802_set_iface_flags(bss, 0);
6378                                 os_free(bss);
6379                                 bss = NULL;
6380                                 break;
6381                         }
6382                 }
6383                 if (bss)
6384                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6385                                    "BSS %p in the list", __func__, bss);
6386         } else {
6387                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6388                 nl80211_teardown_ap(bss);
6389                 if (!bss->added_if && !drv->first_bss->next)
6390                         wpa_driver_nl80211_del_beacon(drv);
6391                 nl80211_destroy_bss(bss);
6392                 if (!bss->added_if)
6393                         i802_set_iface_flags(bss, 0);
6394                 if (drv->first_bss->next) {
6395                         drv->first_bss = drv->first_bss->next;
6396                         drv->ctx = drv->first_bss->ctx;
6397                         os_free(bss);
6398                 } else {
6399                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6400                 }
6401         }
6402
6403         return 0;
6404 }
6405
6406
6407 static int cookie_handler(struct nl_msg *msg, void *arg)
6408 {
6409         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6410         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6411         u64 *cookie = arg;
6412         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6413                   genlmsg_attrlen(gnlh, 0), NULL);
6414         if (tb[NL80211_ATTR_COOKIE])
6415                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6416         return NL_SKIP;
6417 }
6418
6419
6420 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6421                                   unsigned int freq, unsigned int wait,
6422                                   const u8 *buf, size_t buf_len,
6423                                   u64 *cookie_out, int no_cck, int no_ack,
6424                                   int offchanok, const u16 *csa_offs,
6425                                   size_t csa_offs_len)
6426 {
6427         struct wpa_driver_nl80211_data *drv = bss->drv;
6428         struct nl_msg *msg;
6429         u64 cookie;
6430         int ret = -1;
6431
6432         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6433                    "no_ack=%d offchanok=%d",
6434                    freq, wait, no_cck, no_ack, offchanok);
6435         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6436
6437         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6438             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6439             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6440             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6441                            drv->test_use_roc_tx) &&
6442              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6443             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6444             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6445             (csa_offs && nla_put(msg, NL80211_ATTR_CSA_C_OFFSETS_TX,
6446                                  csa_offs_len * sizeof(u16), csa_offs)) ||
6447             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6448                 goto fail;
6449
6450         cookie = 0;
6451         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6452         msg = NULL;
6453         if (ret) {
6454                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6455                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6456                            freq, wait);
6457         } else {
6458                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6459                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6460                            (long long unsigned int) cookie);
6461
6462                 if (cookie_out)
6463                         *cookie_out = no_ack ? (u64) -1 : cookie;
6464
6465                 if (drv->num_send_action_cookies == MAX_SEND_ACTION_COOKIES) {
6466                         wpa_printf(MSG_DEBUG,
6467                                    "nl80211: Drop oldest pending send action cookie 0x%llx",
6468                                    (long long unsigned int)
6469                                    drv->send_action_cookies[0]);
6470                         os_memmove(&drv->send_action_cookies[0],
6471                                    &drv->send_action_cookies[1],
6472                                    (MAX_SEND_ACTION_COOKIES - 1) *
6473                                    sizeof(u64));
6474                         drv->num_send_action_cookies--;
6475                 }
6476                 drv->send_action_cookies[drv->num_send_action_cookies] = cookie;
6477                 drv->num_send_action_cookies++;
6478         }
6479
6480 fail:
6481         nlmsg_free(msg);
6482         return ret;
6483 }
6484
6485
6486 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6487                                           unsigned int freq,
6488                                           unsigned int wait_time,
6489                                           const u8 *dst, const u8 *src,
6490                                           const u8 *bssid,
6491                                           const u8 *data, size_t data_len,
6492                                           int no_cck)
6493 {
6494         struct wpa_driver_nl80211_data *drv = bss->drv;
6495         int ret = -1;
6496         u8 *buf;
6497         struct ieee80211_hdr *hdr;
6498
6499         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6500                    "freq=%u MHz wait=%d ms no_cck=%d)",
6501                    drv->ifindex, freq, wait_time, no_cck);
6502
6503         buf = os_zalloc(24 + data_len);
6504         if (buf == NULL)
6505                 return ret;
6506         os_memcpy(buf + 24, data, data_len);
6507         hdr = (struct ieee80211_hdr *) buf;
6508         hdr->frame_control =
6509                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6510         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6511         os_memcpy(hdr->addr2, src, ETH_ALEN);
6512         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6513
6514         if (is_ap_interface(drv->nlmode) &&
6515             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6516              (int) freq == bss->freq || drv->device_ap_sme ||
6517              !drv->use_monitor))
6518                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6519                                                    0, freq, no_cck, 1,
6520                                                    wait_time, NULL, 0);
6521         else
6522                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6523                                              24 + data_len,
6524                                              &drv->send_action_cookie,
6525                                              no_cck, 0, 1, NULL, 0);
6526
6527         os_free(buf);
6528         return ret;
6529 }
6530
6531
6532 static void nl80211_frame_wait_cancel(struct i802_bss *bss, u64 cookie)
6533 {
6534         struct wpa_driver_nl80211_data *drv = bss->drv;
6535         struct nl_msg *msg;
6536         int ret;
6537
6538         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6539                    (long long unsigned int) cookie);
6540         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6541             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) {
6542                 nlmsg_free(msg);
6543                 return;
6544         }
6545
6546         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6547         if (ret)
6548                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6549                            "(%s)", ret, strerror(-ret));
6550 }
6551
6552
6553 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6554 {
6555         struct i802_bss *bss = priv;
6556         struct wpa_driver_nl80211_data *drv = bss->drv;
6557         unsigned int i;
6558         u64 cookie;
6559
6560         /* Cancel the last pending TX cookie */
6561         nl80211_frame_wait_cancel(bss, drv->send_action_cookie);
6562
6563         /*
6564          * Cancel the other pending TX cookies, if any. This is needed since
6565          * the driver may keep a list of all pending offchannel TX operations
6566          * and free up the radio only once they have expired or cancelled.
6567          */
6568         for (i = drv->num_send_action_cookies; i > 0; i--) {
6569                 cookie = drv->send_action_cookies[i - 1];
6570                 if (cookie != drv->send_action_cookie)
6571                         nl80211_frame_wait_cancel(bss, cookie);
6572         }
6573         drv->num_send_action_cookies = 0;
6574 }
6575
6576
6577 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6578                                                 unsigned int duration)
6579 {
6580         struct i802_bss *bss = priv;
6581         struct wpa_driver_nl80211_data *drv = bss->drv;
6582         struct nl_msg *msg;
6583         int ret;
6584         u64 cookie;
6585
6586         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6587             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6588             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6589                 nlmsg_free(msg);
6590                 return -1;
6591         }
6592
6593         cookie = 0;
6594         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6595         if (ret == 0) {
6596                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6597                            "0x%llx for freq=%u MHz duration=%u",
6598                            (long long unsigned int) cookie, freq, duration);
6599                 drv->remain_on_chan_cookie = cookie;
6600                 drv->pending_remain_on_chan = 1;
6601                 return 0;
6602         }
6603         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6604                    "(freq=%d duration=%u): %d (%s)",
6605                    freq, duration, ret, strerror(-ret));
6606         return -1;
6607 }
6608
6609
6610 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6611 {
6612         struct i802_bss *bss = priv;
6613         struct wpa_driver_nl80211_data *drv = bss->drv;
6614         struct nl_msg *msg;
6615         int ret;
6616
6617         if (!drv->pending_remain_on_chan) {
6618                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6619                            "to cancel");
6620                 return -1;
6621         }
6622
6623         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6624                    "0x%llx",
6625                    (long long unsigned int) drv->remain_on_chan_cookie);
6626
6627         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6628         if (!msg ||
6629             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6630                 nlmsg_free(msg);
6631                 return -1;
6632         }
6633
6634         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6635         if (ret == 0)
6636                 return 0;
6637         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6638                    "%d (%s)", ret, strerror(-ret));
6639         return -1;
6640 }
6641
6642
6643 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6644 {
6645         struct wpa_driver_nl80211_data *drv = bss->drv;
6646
6647         if (!report) {
6648                 if (bss->nl_preq && drv->device_ap_sme &&
6649                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6650                     !bss->static_ap) {
6651                         /*
6652                          * Do not disable Probe Request reporting that was
6653                          * enabled in nl80211_setup_ap().
6654                          */
6655                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6656                                    "Probe Request reporting nl_preq=%p while "
6657                                    "in AP mode", bss->nl_preq);
6658                 } else if (bss->nl_preq) {
6659                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6660                                    "reporting nl_preq=%p", bss->nl_preq);
6661                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6662                 }
6663                 return 0;
6664         }
6665
6666         if (bss->nl_preq) {
6667                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6668                            "already on! nl_preq=%p", bss->nl_preq);
6669                 return 0;
6670         }
6671
6672         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6673         if (bss->nl_preq == NULL)
6674                 return -1;
6675         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6676                    "reporting nl_preq=%p", bss->nl_preq);
6677
6678         if (nl80211_register_frame(bss, bss->nl_preq,
6679                                    (WLAN_FC_TYPE_MGMT << 2) |
6680                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6681                                    NULL, 0) < 0)
6682                 goto out_err;
6683
6684         nl80211_register_eloop_read(&bss->nl_preq,
6685                                     wpa_driver_nl80211_event_receive,
6686                                     bss->nl_cb);
6687
6688         return 0;
6689
6690  out_err:
6691         nl_destroy_handles(&bss->nl_preq);
6692         return -1;
6693 }
6694
6695
6696 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6697                                      int ifindex, int disabled)
6698 {
6699         struct nl_msg *msg;
6700         struct nlattr *bands, *band;
6701         int ret;
6702
6703         wpa_printf(MSG_DEBUG,
6704                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6705                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6706                    "no NL80211_TXRATE_LEGACY constraint");
6707
6708         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6709                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6710         if (!msg)
6711                 return -1;
6712
6713         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6714         if (!bands)
6715                 goto fail;
6716
6717         /*
6718          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6719          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6720          * rates. All 5 GHz rates are left enabled.
6721          */
6722         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6723         if (!band ||
6724             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6725                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6726                 goto fail;
6727         nla_nest_end(msg, band);
6728
6729         nla_nest_end(msg, bands);
6730
6731         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6732         if (ret) {
6733                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6734                            "(%s)", ret, strerror(-ret));
6735         } else
6736                 drv->disabled_11b_rates = disabled;
6737
6738         return ret;
6739
6740 fail:
6741         nlmsg_free(msg);
6742         return -1;
6743 }
6744
6745
6746 static int wpa_driver_nl80211_deinit_ap(void *priv)
6747 {
6748         struct i802_bss *bss = priv;
6749         struct wpa_driver_nl80211_data *drv = bss->drv;
6750         if (!is_ap_interface(drv->nlmode))
6751                 return -1;
6752         wpa_driver_nl80211_del_beacon(drv);
6753         bss->beacon_set = 0;
6754
6755         /*
6756          * If the P2P GO interface was dynamically added, then it is
6757          * possible that the interface change to station is not possible.
6758          */
6759         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6760                 return 0;
6761
6762         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6763 }
6764
6765
6766 static int wpa_driver_nl80211_stop_ap(void *priv)
6767 {
6768         struct i802_bss *bss = priv;
6769         struct wpa_driver_nl80211_data *drv = bss->drv;
6770         if (!is_ap_interface(drv->nlmode))
6771                 return -1;
6772         wpa_driver_nl80211_del_beacon(drv);
6773         bss->beacon_set = 0;
6774         return 0;
6775 }
6776
6777
6778 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6779 {
6780         struct i802_bss *bss = priv;
6781         struct wpa_driver_nl80211_data *drv = bss->drv;
6782         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6783                 return -1;
6784
6785         /*
6786          * If the P2P Client interface was dynamically added, then it is
6787          * possible that the interface change to station is not possible.
6788          */
6789         if (bss->if_dynamic)
6790                 return 0;
6791
6792         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6793 }
6794
6795
6796 static void wpa_driver_nl80211_resume(void *priv)
6797 {
6798         struct i802_bss *bss = priv;
6799         enum nl80211_iftype nlmode = nl80211_get_ifmode(bss);
6800
6801         if (i802_set_iface_flags(bss, 1))
6802                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6803
6804         if (is_p2p_net_interface(nlmode))
6805                 nl80211_disable_11b_rates(bss->drv, bss->drv->ifindex, 1);
6806 }
6807
6808
6809 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6810 {
6811         struct i802_bss *bss = priv;
6812         struct wpa_driver_nl80211_data *drv = bss->drv;
6813         struct nl_msg *msg;
6814         struct nlattr *cqm;
6815
6816         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6817                    "hysteresis=%d", threshold, hysteresis);
6818
6819         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6820             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6821             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6822             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6823                 nlmsg_free(msg);
6824                 return -1;
6825         }
6826         nla_nest_end(msg, cqm);
6827
6828         return send_and_recv_msgs(drv, msg, NULL, NULL);
6829 }
6830
6831
6832 static int get_channel_width(struct nl_msg *msg, void *arg)
6833 {
6834         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6835         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6836         struct wpa_signal_info *sig_change = arg;
6837
6838         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6839                   genlmsg_attrlen(gnlh, 0), NULL);
6840
6841         sig_change->center_frq1 = -1;
6842         sig_change->center_frq2 = -1;
6843         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6844
6845         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6846                 sig_change->chanwidth = convert2width(
6847                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6848                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6849                         sig_change->center_frq1 =
6850                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6851                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6852                         sig_change->center_frq2 =
6853                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6854         }
6855
6856         return NL_SKIP;
6857 }
6858
6859
6860 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6861                                      struct wpa_signal_info *sig)
6862 {
6863         struct nl_msg *msg;
6864
6865         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6866         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6867 }
6868
6869
6870 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6871 {
6872         struct i802_bss *bss = priv;
6873         struct wpa_driver_nl80211_data *drv = bss->drv;
6874         int res;
6875
6876         os_memset(si, 0, sizeof(*si));
6877         res = nl80211_get_link_signal(drv, si);
6878         if (res) {
6879                 if (drv->nlmode != NL80211_IFTYPE_ADHOC &&
6880                     drv->nlmode != NL80211_IFTYPE_MESH_POINT)
6881                         return res;
6882                 si->current_signal = 0;
6883         }
6884
6885         res = nl80211_get_channel_width(drv, si);
6886         if (res != 0)
6887                 return res;
6888
6889         return nl80211_get_link_noise(drv, si);
6890 }
6891
6892
6893 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6894                               int encrypt)
6895 {
6896         struct i802_bss *bss = priv;
6897         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6898                                              0, 0, 0, 0, NULL, 0);
6899 }
6900
6901
6902 static int nl80211_set_param(void *priv, const char *param)
6903 {
6904         if (param == NULL)
6905                 return 0;
6906         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6907
6908 #ifdef CONFIG_P2P
6909         if (os_strstr(param, "use_p2p_group_interface=1")) {
6910                 struct i802_bss *bss = priv;
6911                 struct wpa_driver_nl80211_data *drv = bss->drv;
6912
6913                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6914                            "interface");
6915                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6916                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6917         }
6918 #endif /* CONFIG_P2P */
6919
6920         if (os_strstr(param, "use_monitor=1")) {
6921                 struct i802_bss *bss = priv;
6922                 struct wpa_driver_nl80211_data *drv = bss->drv;
6923                 drv->use_monitor = 1;
6924         }
6925
6926         if (os_strstr(param, "force_connect_cmd=1")) {
6927                 struct i802_bss *bss = priv;
6928                 struct wpa_driver_nl80211_data *drv = bss->drv;
6929                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6930                 drv->force_connect_cmd = 1;
6931         }
6932
6933         if (os_strstr(param, "no_offchannel_tx=1")) {
6934                 struct i802_bss *bss = priv;
6935                 struct wpa_driver_nl80211_data *drv = bss->drv;
6936                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6937                 drv->test_use_roc_tx = 1;
6938         }
6939
6940         return 0;
6941 }
6942
6943
6944 static void * nl80211_global_init(void *ctx)
6945 {
6946         struct nl80211_global *global;
6947         struct netlink_config *cfg;
6948
6949         global = os_zalloc(sizeof(*global));
6950         if (global == NULL)
6951                 return NULL;
6952         global->ctx = ctx;
6953         global->ioctl_sock = -1;
6954         dl_list_init(&global->interfaces);
6955         global->if_add_ifindex = -1;
6956
6957         cfg = os_zalloc(sizeof(*cfg));
6958         if (cfg == NULL)
6959                 goto err;
6960
6961         cfg->ctx = global;
6962         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6963         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6964         global->netlink = netlink_init(cfg);
6965         if (global->netlink == NULL) {
6966                 os_free(cfg);
6967                 goto err;
6968         }
6969
6970         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6971                 goto err;
6972
6973         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6974         if (global->ioctl_sock < 0) {
6975                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6976                            strerror(errno));
6977                 goto err;
6978         }
6979
6980         return global;
6981
6982 err:
6983         nl80211_global_deinit(global);
6984         return NULL;
6985 }
6986
6987
6988 static void nl80211_global_deinit(void *priv)
6989 {
6990         struct nl80211_global *global = priv;
6991         if (global == NULL)
6992                 return;
6993         if (!dl_list_empty(&global->interfaces)) {
6994                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6995                            "nl80211_global_deinit",
6996                            dl_list_len(&global->interfaces));
6997         }
6998
6999         if (global->netlink)
7000                 netlink_deinit(global->netlink);
7001
7002         nl_destroy_handles(&global->nl);
7003
7004         if (global->nl_event)
7005                 nl80211_destroy_eloop_handle(&global->nl_event);
7006
7007         nl_cb_put(global->nl_cb);
7008
7009         if (global->ioctl_sock >= 0)
7010                 close(global->ioctl_sock);
7011
7012         os_free(global);
7013 }
7014
7015
7016 static const char * nl80211_get_radio_name(void *priv)
7017 {
7018         struct i802_bss *bss = priv;
7019         struct wpa_driver_nl80211_data *drv = bss->drv;
7020         return drv->phyname;
7021 }
7022
7023
7024 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7025                          const u8 *pmkid)
7026 {
7027         struct nl_msg *msg;
7028
7029         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
7030             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
7031             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
7032                 nlmsg_free(msg);
7033                 return -ENOBUFS;
7034         }
7035
7036         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7037 }
7038
7039
7040 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7041 {
7042         struct i802_bss *bss = priv;
7043         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7044         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7045 }
7046
7047
7048 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7049 {
7050         struct i802_bss *bss = priv;
7051         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7052                    MAC2STR(bssid));
7053         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7054 }
7055
7056
7057 static int nl80211_flush_pmkid(void *priv)
7058 {
7059         struct i802_bss *bss = priv;
7060         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7061         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7062 }
7063
7064
7065 static void clean_survey_results(struct survey_results *survey_results)
7066 {
7067         struct freq_survey *survey, *tmp;
7068
7069         if (dl_list_empty(&survey_results->survey_list))
7070                 return;
7071
7072         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7073                               struct freq_survey, list) {
7074                 dl_list_del(&survey->list);
7075                 os_free(survey);
7076         }
7077 }
7078
7079
7080 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7081                        struct dl_list *survey_list)
7082 {
7083         struct freq_survey *survey;
7084
7085         survey = os_zalloc(sizeof(struct freq_survey));
7086         if  (!survey)
7087                 return;
7088
7089         survey->ifidx = ifidx;
7090         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7091         survey->filled = 0;
7092
7093         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7094                 survey->nf = (int8_t)
7095                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7096                 survey->filled |= SURVEY_HAS_NF;
7097         }
7098
7099         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7100                 survey->channel_time =
7101                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7102                 survey->filled |= SURVEY_HAS_CHAN_TIME;
7103         }
7104
7105         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7106                 survey->channel_time_busy =
7107                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7108                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7109         }
7110
7111         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7112                 survey->channel_time_rx =
7113                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7114                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7115         }
7116
7117         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7118                 survey->channel_time_tx =
7119                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7120                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7121         }
7122
7123         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)",
7124                    survey->freq,
7125                    survey->nf,
7126                    (unsigned long int) survey->channel_time,
7127                    (unsigned long int) survey->channel_time_busy,
7128                    (unsigned long int) survey->channel_time_tx,
7129                    (unsigned long int) survey->channel_time_rx,
7130                    survey->filled);
7131
7132         dl_list_add_tail(survey_list, &survey->list);
7133 }
7134
7135
7136 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7137                            unsigned int freq_filter)
7138 {
7139         if (!freq_filter)
7140                 return 1;
7141
7142         return freq_filter == surveyed_freq;
7143 }
7144
7145
7146 static int survey_handler(struct nl_msg *msg, void *arg)
7147 {
7148         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7149         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7150         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7151         struct survey_results *survey_results;
7152         u32 surveyed_freq = 0;
7153         u32 ifidx;
7154
7155         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7156                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7157                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7158         };
7159
7160         survey_results = (struct survey_results *) arg;
7161
7162         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7163                   genlmsg_attrlen(gnlh, 0), NULL);
7164
7165         if (!tb[NL80211_ATTR_IFINDEX])
7166                 return NL_SKIP;
7167
7168         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7169
7170         if (!tb[NL80211_ATTR_SURVEY_INFO])
7171                 return NL_SKIP;
7172
7173         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7174                              tb[NL80211_ATTR_SURVEY_INFO],
7175                              survey_policy))
7176                 return NL_SKIP;
7177
7178         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7179                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7180                 return NL_SKIP;
7181         }
7182
7183         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7184
7185         if (!check_survey_ok(sinfo, surveyed_freq,
7186                              survey_results->freq_filter))
7187                 return NL_SKIP;
7188
7189         if (survey_results->freq_filter &&
7190             survey_results->freq_filter != surveyed_freq) {
7191                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7192                            surveyed_freq);
7193                 return NL_SKIP;
7194         }
7195
7196         add_survey(sinfo, ifidx, &survey_results->survey_list);
7197
7198         return NL_SKIP;
7199 }
7200
7201
7202 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7203 {
7204         struct i802_bss *bss = priv;
7205         struct wpa_driver_nl80211_data *drv = bss->drv;
7206         struct nl_msg *msg;
7207         int err;
7208         union wpa_event_data data;
7209         struct survey_results *survey_results;
7210
7211         os_memset(&data, 0, sizeof(data));
7212         survey_results = &data.survey_results;
7213
7214         dl_list_init(&survey_results->survey_list);
7215
7216         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7217         if (!msg)
7218                 return -ENOBUFS;
7219
7220         if (freq)
7221                 data.survey_results.freq_filter = freq;
7222
7223         do {
7224                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7225                 err = send_and_recv_msgs(drv, msg, survey_handler,
7226                                          survey_results);
7227         } while (err > 0);
7228
7229         if (err)
7230                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7231         else
7232                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7233
7234         clean_survey_results(survey_results);
7235         return err;
7236 }
7237
7238
7239 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
7240                                    const u8 *kck, size_t kck_len,
7241                                    const u8 *replay_ctr)
7242 {
7243         struct i802_bss *bss = priv;
7244         struct wpa_driver_nl80211_data *drv = bss->drv;
7245         struct nlattr *replay_nested;
7246         struct nl_msg *msg;
7247         int ret;
7248
7249         if (!drv->set_rekey_offload)
7250                 return;
7251
7252         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
7253         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
7254             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
7255             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
7256             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
7257             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7258                     replay_ctr)) {
7259                 nl80211_nlmsg_clear(msg);
7260                 nlmsg_free(msg);
7261                 return;
7262         }
7263
7264         nla_nest_end(msg, replay_nested);
7265
7266         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
7267         if (ret == -EOPNOTSUPP) {
7268                 wpa_printf(MSG_DEBUG,
7269                            "nl80211: Driver does not support rekey offload");
7270                 drv->set_rekey_offload = 0;
7271         }
7272 }
7273
7274
7275 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7276                                     const u8 *addr, int qos)
7277 {
7278         /* send data frame to poll STA and check whether
7279          * this frame is ACKed */
7280         struct {
7281                 struct ieee80211_hdr hdr;
7282                 u16 qos_ctl;
7283         } STRUCT_PACKED nulldata;
7284         size_t size;
7285
7286         /* Send data frame to poll STA and check whether this frame is ACKed */
7287
7288         os_memset(&nulldata, 0, sizeof(nulldata));
7289
7290         if (qos) {
7291                 nulldata.hdr.frame_control =
7292                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7293                                      WLAN_FC_STYPE_QOS_NULL);
7294                 size = sizeof(nulldata);
7295         } else {
7296                 nulldata.hdr.frame_control =
7297                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7298                                      WLAN_FC_STYPE_NULLFUNC);
7299                 size = sizeof(struct ieee80211_hdr);
7300         }
7301
7302         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7303         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7304         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7305         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7306
7307         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7308                                          0, 0, NULL, 0) < 0)
7309                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7310                            "send poll frame");
7311 }
7312
7313 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7314                                 int qos)
7315 {
7316         struct i802_bss *bss = priv;
7317         struct wpa_driver_nl80211_data *drv = bss->drv;
7318         struct nl_msg *msg;
7319         int ret;
7320
7321         if (!drv->poll_command_supported) {
7322                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7323                 return;
7324         }
7325
7326         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
7327             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7328                 nlmsg_free(msg);
7329                 return;
7330         }
7331
7332         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7333         if (ret < 0) {
7334                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
7335                            MACSTR " failed: ret=%d (%s)",
7336                            MAC2STR(addr), ret, strerror(-ret));
7337         }
7338 }
7339
7340
7341 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7342 {
7343         struct nl_msg *msg;
7344
7345         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
7346             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7347                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7348                 nlmsg_free(msg);
7349                 return -ENOBUFS;
7350         }
7351         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7352 }
7353
7354
7355 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7356                                      int ctwindow)
7357 {
7358         struct i802_bss *bss = priv;
7359
7360         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7361                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7362
7363         if (opp_ps != -1 || ctwindow != -1) {
7364 #ifdef ANDROID_P2P
7365                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7366 #else /* ANDROID_P2P */
7367                 return -1; /* Not yet supported */
7368 #endif /* ANDROID_P2P */
7369         }
7370
7371         if (legacy_ps == -1)
7372                 return 0;
7373         if (legacy_ps != 0 && legacy_ps != 1)
7374                 return -1; /* Not yet supported */
7375
7376         return nl80211_set_power_save(bss, legacy_ps);
7377 }
7378
7379
7380 static int nl80211_start_radar_detection(void *priv,
7381                                          struct hostapd_freq_params *freq)
7382 {
7383         struct i802_bss *bss = priv;
7384         struct wpa_driver_nl80211_data *drv = bss->drv;
7385         struct nl_msg *msg;
7386         int ret;
7387
7388         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)",
7389                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7390                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7391
7392         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7393                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7394                            "detection");
7395                 return -1;
7396         }
7397
7398         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7399             nl80211_put_freq_params(msg, freq) < 0) {
7400                 nlmsg_free(msg);
7401                 return -1;
7402         }
7403
7404         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7405         if (ret == 0)
7406                 return 0;
7407         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7408                    "%d (%s)", ret, strerror(-ret));
7409         return -1;
7410 }
7411
7412 #ifdef CONFIG_TDLS
7413
7414 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7415                                   u8 dialog_token, u16 status_code,
7416                                   u32 peer_capab, int initiator, const u8 *buf,
7417                                   size_t len)
7418 {
7419         struct i802_bss *bss = priv;
7420         struct wpa_driver_nl80211_data *drv = bss->drv;
7421         struct nl_msg *msg;
7422
7423         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7424                 return -EOPNOTSUPP;
7425
7426         if (!dst)
7427                 return -EINVAL;
7428
7429         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7430             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7431             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7432             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7433             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7434                 goto fail;
7435         if (peer_capab) {
7436                 /*
7437                  * The internal enum tdls_peer_capability definition is
7438                  * currently identical with the nl80211 enum
7439                  * nl80211_tdls_peer_capability, so no conversion is needed
7440                  * here.
7441                  */
7442                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7443                                 peer_capab))
7444                         goto fail;
7445         }
7446         if ((initiator &&
7447              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7448             nla_put(msg, NL80211_ATTR_IE, len, buf))
7449                 goto fail;
7450
7451         return send_and_recv_msgs(drv, msg, NULL, NULL);
7452
7453 fail:
7454         nlmsg_free(msg);
7455         return -ENOBUFS;
7456 }
7457
7458
7459 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7460 {
7461         struct i802_bss *bss = priv;
7462         struct wpa_driver_nl80211_data *drv = bss->drv;
7463         struct nl_msg *msg;
7464         enum nl80211_tdls_operation nl80211_oper;
7465
7466         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7467                 return -EOPNOTSUPP;
7468
7469         switch (oper) {
7470         case TDLS_DISCOVERY_REQ:
7471                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7472                 break;
7473         case TDLS_SETUP:
7474                 nl80211_oper = NL80211_TDLS_SETUP;
7475                 break;
7476         case TDLS_TEARDOWN:
7477                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7478                 break;
7479         case TDLS_ENABLE_LINK:
7480                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7481                 break;
7482         case TDLS_DISABLE_LINK:
7483                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7484                 break;
7485         case TDLS_ENABLE:
7486                 return 0;
7487         case TDLS_DISABLE:
7488                 return 0;
7489         default:
7490                 return -EINVAL;
7491         }
7492
7493         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7494             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7495             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7496                 nlmsg_free(msg);
7497                 return -ENOBUFS;
7498         }
7499
7500         return send_and_recv_msgs(drv, msg, NULL, NULL);
7501 }
7502
7503
7504 static int
7505 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7506                                    const struct hostapd_freq_params *params)
7507 {
7508         struct i802_bss *bss = priv;
7509         struct wpa_driver_nl80211_data *drv = bss->drv;
7510         struct nl_msg *msg;
7511         int ret = -ENOBUFS;
7512
7513         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7514             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7515                 return -EOPNOTSUPP;
7516
7517         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7518                    " oper_class=%u freq=%u",
7519                    MAC2STR(addr), oper_class, params->freq);
7520         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7521         if (!msg ||
7522             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7523             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7524             (ret = nl80211_put_freq_params(msg, params))) {
7525                 nlmsg_free(msg);
7526                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7527                 return ret;
7528         }
7529
7530         return send_and_recv_msgs(drv, msg, NULL, NULL);
7531 }
7532
7533
7534 static int
7535 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7536 {
7537         struct i802_bss *bss = priv;
7538         struct wpa_driver_nl80211_data *drv = bss->drv;
7539         struct nl_msg *msg;
7540
7541         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7542             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7543                 return -EOPNOTSUPP;
7544
7545         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7546                    MAC2STR(addr));
7547         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7548         if (!msg ||
7549             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7550                 nlmsg_free(msg);
7551                 wpa_printf(MSG_DEBUG,
7552                            "nl80211: Could not build TDLS cancel chan switch");
7553                 return -ENOBUFS;
7554         }
7555
7556         return send_and_recv_msgs(drv, msg, NULL, NULL);
7557 }
7558
7559 #endif /* CONFIG TDLS */
7560
7561
7562 static int driver_nl80211_set_key(const char *ifname, void *priv,
7563                                   enum wpa_alg alg, const u8 *addr,
7564                                   int key_idx, int set_tx,
7565                                   const u8 *seq, size_t seq_len,
7566                                   const u8 *key, size_t key_len)
7567 {
7568         struct i802_bss *bss = priv;
7569         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7570                                           set_tx, seq, seq_len, key, key_len);
7571 }
7572
7573
7574 static int driver_nl80211_scan2(void *priv,
7575                                 struct wpa_driver_scan_params *params)
7576 {
7577         struct i802_bss *bss = priv;
7578 #ifdef CONFIG_DRIVER_NL80211_QCA
7579         struct wpa_driver_nl80211_data *drv = bss->drv;
7580
7581         /*
7582          * Do a vendor specific scan if possible. If only_new_results is
7583          * set, do a normal scan since a kernel (cfg80211) BSS cache flush
7584          * cannot be achieved through a vendor scan. The below condition may
7585          * need to be modified if new scan flags are added in the future whose
7586          * functionality can only be achieved through a normal scan.
7587          */
7588         if (drv->scan_vendor_cmd_avail && !params->only_new_results)
7589                 return wpa_driver_nl80211_vendor_scan(bss, params);
7590 #endif /* CONFIG_DRIVER_NL80211_QCA */
7591         return wpa_driver_nl80211_scan(bss, params);
7592 }
7593
7594
7595 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7596                                          int reason_code)
7597 {
7598         struct i802_bss *bss = priv;
7599         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7600 }
7601
7602
7603 static int driver_nl80211_authenticate(void *priv,
7604                                        struct wpa_driver_auth_params *params)
7605 {
7606         struct i802_bss *bss = priv;
7607         return wpa_driver_nl80211_authenticate(bss, params);
7608 }
7609
7610
7611 static void driver_nl80211_deinit(void *priv)
7612 {
7613         struct i802_bss *bss = priv;
7614         wpa_driver_nl80211_deinit(bss);
7615 }
7616
7617
7618 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7619                                     const char *ifname)
7620 {
7621         struct i802_bss *bss = priv;
7622         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7623 }
7624
7625
7626 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7627                                     size_t data_len, int noack,
7628                                     unsigned int freq,
7629                                     const u16 *csa_offs, size_t csa_offs_len)
7630 {
7631         struct i802_bss *bss = priv;
7632         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7633                                             freq, 0, 0, 0, csa_offs,
7634                                             csa_offs_len);
7635 }
7636
7637
7638 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7639 {
7640         struct i802_bss *bss = priv;
7641         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7642 }
7643
7644
7645 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7646                                        const char *ifname, int vlan_id)
7647 {
7648         struct i802_bss *bss = priv;
7649         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7650 }
7651
7652
7653 static int driver_nl80211_read_sta_data(void *priv,
7654                                         struct hostap_sta_driver_data *data,
7655                                         const u8 *addr)
7656 {
7657         struct i802_bss *bss = priv;
7658         return i802_read_sta_data(bss, data, addr);
7659 }
7660
7661
7662 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7663                                       unsigned int wait_time,
7664                                       const u8 *dst, const u8 *src,
7665                                       const u8 *bssid,
7666                                       const u8 *data, size_t data_len,
7667                                       int no_cck)
7668 {
7669         struct i802_bss *bss = priv;
7670         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7671                                               bssid, data, data_len, no_cck);
7672 }
7673
7674
7675 static int driver_nl80211_probe_req_report(void *priv, int report)
7676 {
7677         struct i802_bss *bss = priv;
7678         return wpa_driver_nl80211_probe_req_report(bss, report);
7679 }
7680
7681
7682 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7683                                             const u8 *ies, size_t ies_len)
7684 {
7685         int ret;
7686         struct nl_msg *msg;
7687         struct i802_bss *bss = priv;
7688         struct wpa_driver_nl80211_data *drv = bss->drv;
7689         u16 mdid = WPA_GET_LE16(md);
7690
7691         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7692         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7693             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7694             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7695                 nlmsg_free(msg);
7696                 return -ENOBUFS;
7697         }
7698
7699         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7700         if (ret) {
7701                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7702                            "err=%d (%s)", ret, strerror(-ret));
7703         }
7704
7705         return ret;
7706 }
7707
7708
7709 static const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7710 {
7711         struct i802_bss *bss = priv;
7712         struct wpa_driver_nl80211_data *drv = bss->drv;
7713
7714         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7715                 return NULL;
7716
7717         return bss->addr;
7718 }
7719
7720
7721 static const char * scan_state_str(enum scan_states scan_state)
7722 {
7723         switch (scan_state) {
7724         case NO_SCAN:
7725                 return "NO_SCAN";
7726         case SCAN_REQUESTED:
7727                 return "SCAN_REQUESTED";
7728         case SCAN_STARTED:
7729                 return "SCAN_STARTED";
7730         case SCAN_COMPLETED:
7731                 return "SCAN_COMPLETED";
7732         case SCAN_ABORTED:
7733                 return "SCAN_ABORTED";
7734         case SCHED_SCAN_STARTED:
7735                 return "SCHED_SCAN_STARTED";
7736         case SCHED_SCAN_STOPPED:
7737                 return "SCHED_SCAN_STOPPED";
7738         case SCHED_SCAN_RESULTS:
7739                 return "SCHED_SCAN_RESULTS";
7740         }
7741
7742         return "??";
7743 }
7744
7745
7746 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7747 {
7748         struct i802_bss *bss = priv;
7749         struct wpa_driver_nl80211_data *drv = bss->drv;
7750         int res;
7751         char *pos, *end;
7752
7753         pos = buf;
7754         end = buf + buflen;
7755
7756         res = os_snprintf(pos, end - pos,
7757                           "ifindex=%d\n"
7758                           "ifname=%s\n"
7759                           "brname=%s\n"
7760                           "addr=" MACSTR "\n"
7761                           "freq=%d\n"
7762                           "%s%s%s%s%s",
7763                           bss->ifindex,
7764                           bss->ifname,
7765                           bss->brname,
7766                           MAC2STR(bss->addr),
7767                           bss->freq,
7768                           bss->beacon_set ? "beacon_set=1\n" : "",
7769                           bss->added_if_into_bridge ?
7770                           "added_if_into_bridge=1\n" : "",
7771                           bss->added_bridge ? "added_bridge=1\n" : "",
7772                           bss->in_deinit ? "in_deinit=1\n" : "",
7773                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7774         if (os_snprintf_error(end - pos, res))
7775                 return pos - buf;
7776         pos += res;
7777
7778         if (bss->wdev_id_set) {
7779                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7780                                   (unsigned long long) bss->wdev_id);
7781                 if (os_snprintf_error(end - pos, res))
7782                         return pos - buf;
7783                 pos += res;
7784         }
7785
7786         res = os_snprintf(pos, end - pos,
7787                           "phyname=%s\n"
7788                           "perm_addr=" MACSTR "\n"
7789                           "drv_ifindex=%d\n"
7790                           "operstate=%d\n"
7791                           "scan_state=%s\n"
7792                           "auth_bssid=" MACSTR "\n"
7793                           "auth_attempt_bssid=" MACSTR "\n"
7794                           "bssid=" MACSTR "\n"
7795                           "prev_bssid=" MACSTR "\n"
7796                           "associated=%d\n"
7797                           "assoc_freq=%u\n"
7798                           "monitor_sock=%d\n"
7799                           "monitor_ifidx=%d\n"
7800                           "monitor_refcount=%d\n"
7801                           "last_mgmt_freq=%u\n"
7802                           "eapol_tx_sock=%d\n"
7803                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7804                           drv->phyname,
7805                           MAC2STR(drv->perm_addr),
7806                           drv->ifindex,
7807                           drv->operstate,
7808                           scan_state_str(drv->scan_state),
7809                           MAC2STR(drv->auth_bssid),
7810                           MAC2STR(drv->auth_attempt_bssid),
7811                           MAC2STR(drv->bssid),
7812                           MAC2STR(drv->prev_bssid),
7813                           drv->associated,
7814                           drv->assoc_freq,
7815                           drv->monitor_sock,
7816                           drv->monitor_ifidx,
7817                           drv->monitor_refcount,
7818                           drv->last_mgmt_freq,
7819                           drv->eapol_tx_sock,
7820                           drv->ignore_if_down_event ?
7821                           "ignore_if_down_event=1\n" : "",
7822                           drv->scan_complete_events ?
7823                           "scan_complete_events=1\n" : "",
7824                           drv->disabled_11b_rates ?
7825                           "disabled_11b_rates=1\n" : "",
7826                           drv->pending_remain_on_chan ?
7827                           "pending_remain_on_chan=1\n" : "",
7828                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7829                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7830                           drv->poll_command_supported ?
7831                           "poll_command_supported=1\n" : "",
7832                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7833                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7834                           drv->retry_auth ? "retry_auth=1\n" : "",
7835                           drv->use_monitor ? "use_monitor=1\n" : "",
7836                           drv->ignore_next_local_disconnect ?
7837                           "ignore_next_local_disconnect=1\n" : "",
7838                           drv->ignore_next_local_deauth ?
7839                           "ignore_next_local_deauth=1\n" : "");
7840         if (os_snprintf_error(end - pos, res))
7841                 return pos - buf;
7842         pos += res;
7843
7844         if (drv->has_capability) {
7845                 res = os_snprintf(pos, end - pos,
7846                                   "capa.key_mgmt=0x%x\n"
7847                                   "capa.enc=0x%x\n"
7848                                   "capa.auth=0x%x\n"
7849                                   "capa.flags=0x%llx\n"
7850                                   "capa.rrm_flags=0x%x\n"
7851                                   "capa.max_scan_ssids=%d\n"
7852                                   "capa.max_sched_scan_ssids=%d\n"
7853                                   "capa.sched_scan_supported=%d\n"
7854                                   "capa.max_match_sets=%d\n"
7855                                   "capa.max_remain_on_chan=%u\n"
7856                                   "capa.max_stations=%u\n"
7857                                   "capa.probe_resp_offloads=0x%x\n"
7858                                   "capa.max_acl_mac_addrs=%u\n"
7859                                   "capa.num_multichan_concurrent=%u\n"
7860                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7861                                   "capa.mac_addr_rand_scan_supported=%d\n"
7862                                   "capa.conc_capab=%u\n"
7863                                   "capa.max_conc_chan_2_4=%u\n"
7864                                   "capa.max_conc_chan_5_0=%u\n"
7865                                   "capa.max_sched_scan_plans=%u\n"
7866                                   "capa.max_sched_scan_plan_interval=%u\n"
7867                                   "capa.max_sched_scan_plan_iterations=%u\n",
7868                                   drv->capa.key_mgmt,
7869                                   drv->capa.enc,
7870                                   drv->capa.auth,
7871                                   (unsigned long long) drv->capa.flags,
7872                                   drv->capa.rrm_flags,
7873                                   drv->capa.max_scan_ssids,
7874                                   drv->capa.max_sched_scan_ssids,
7875                                   drv->capa.sched_scan_supported,
7876                                   drv->capa.max_match_sets,
7877                                   drv->capa.max_remain_on_chan,
7878                                   drv->capa.max_stations,
7879                                   drv->capa.probe_resp_offloads,
7880                                   drv->capa.max_acl_mac_addrs,
7881                                   drv->capa.num_multichan_concurrent,
7882                                   drv->capa.mac_addr_rand_sched_scan_supported,
7883                                   drv->capa.mac_addr_rand_scan_supported,
7884                                   drv->capa.conc_capab,
7885                                   drv->capa.max_conc_chan_2_4,
7886                                   drv->capa.max_conc_chan_5_0,
7887                                   drv->capa.max_sched_scan_plans,
7888                                   drv->capa.max_sched_scan_plan_interval,
7889                                   drv->capa.max_sched_scan_plan_iterations);
7890                 if (os_snprintf_error(end - pos, res))
7891                         return pos - buf;
7892                 pos += res;
7893         }
7894
7895         return pos - buf;
7896 }
7897
7898
7899 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7900 {
7901         if ((settings->head &&
7902              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7903                      settings->head_len, settings->head)) ||
7904             (settings->tail &&
7905              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7906                      settings->tail_len, settings->tail)) ||
7907             (settings->beacon_ies &&
7908              nla_put(msg, NL80211_ATTR_IE,
7909                      settings->beacon_ies_len, settings->beacon_ies)) ||
7910             (settings->proberesp_ies &&
7911              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7912                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7913             (settings->assocresp_ies &&
7914              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7915                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7916             (settings->probe_resp &&
7917              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7918                      settings->probe_resp_len, settings->probe_resp)))
7919                 return -ENOBUFS;
7920
7921         return 0;
7922 }
7923
7924
7925 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7926 {
7927         struct nl_msg *msg;
7928         struct i802_bss *bss = priv;
7929         struct wpa_driver_nl80211_data *drv = bss->drv;
7930         struct nlattr *beacon_csa;
7931         int ret = -ENOBUFS;
7932         int csa_off_len = 0;
7933         int i;
7934
7935         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7936                    settings->cs_count, settings->block_tx,
7937                    settings->freq_params.freq, settings->freq_params.bandwidth,
7938                    settings->freq_params.center_freq1,
7939                    settings->freq_params.center_freq2);
7940
7941         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7942                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7943                 return -EOPNOTSUPP;
7944         }
7945
7946         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7947             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7948                 return -EOPNOTSUPP;
7949
7950         /*
7951          * Remove empty counters, assuming Probe Response and Beacon frame
7952          * counters match. This implementation assumes that there are only two
7953          * counters.
7954          */
7955         if (settings->counter_offset_beacon[0] &&
7956             !settings->counter_offset_beacon[1]) {
7957                 csa_off_len = 1;
7958         } else if (settings->counter_offset_beacon[1] &&
7959                    !settings->counter_offset_beacon[0]) {
7960                 csa_off_len = 1;
7961                 settings->counter_offset_beacon[0] =
7962                         settings->counter_offset_beacon[1];
7963                 settings->counter_offset_presp[0] =
7964                         settings->counter_offset_presp[1];
7965         } else if (settings->counter_offset_beacon[1] &&
7966                    settings->counter_offset_beacon[0]) {
7967                 csa_off_len = 2;
7968         } else {
7969                 wpa_printf(MSG_ERROR, "nl80211: No CSA counters provided");
7970                 return -EINVAL;
7971         }
7972
7973         /* Check CSA counters validity */
7974         if (drv->capa.max_csa_counters &&
7975             csa_off_len > drv->capa.max_csa_counters) {
7976                 wpa_printf(MSG_ERROR,
7977                            "nl80211: Too many CSA counters provided");
7978                 return -EINVAL;
7979         }
7980
7981         if (!settings->beacon_csa.tail)
7982                 return -EINVAL;
7983
7984         for (i = 0; i < csa_off_len; i++) {
7985                 u16 csa_c_off_bcn = settings->counter_offset_beacon[i];
7986                 u16 csa_c_off_presp = settings->counter_offset_presp[i];
7987
7988                 if ((settings->beacon_csa.tail_len <= csa_c_off_bcn) ||
7989                     (settings->beacon_csa.tail[csa_c_off_bcn] !=
7990                      settings->cs_count))
7991                         return -EINVAL;
7992
7993                 if (settings->beacon_csa.probe_resp &&
7994                     ((settings->beacon_csa.probe_resp_len <=
7995                       csa_c_off_presp) ||
7996                      (settings->beacon_csa.probe_resp[csa_c_off_presp] !=
7997                       settings->cs_count)))
7998                         return -EINVAL;
7999         }
8000
8001         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
8002             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
8003                         settings->cs_count) ||
8004             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
8005             (settings->block_tx &&
8006              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
8007                 goto error;
8008
8009         /* beacon_after params */
8010         ret = set_beacon_data(msg, &settings->beacon_after);
8011         if (ret)
8012                 goto error;
8013
8014         /* beacon_csa params */
8015         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8016         if (!beacon_csa)
8017                 goto fail;
8018
8019         ret = set_beacon_data(msg, &settings->beacon_csa);
8020         if (ret)
8021                 goto error;
8022
8023         if (nla_put(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8024                     csa_off_len * sizeof(u16),
8025                     settings->counter_offset_beacon) ||
8026             (settings->beacon_csa.probe_resp &&
8027              nla_put(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8028                      csa_off_len * sizeof(u16),
8029                      settings->counter_offset_presp)))
8030                 goto fail;
8031
8032         nla_nest_end(msg, beacon_csa);
8033         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8034         if (ret) {
8035                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8036                            ret, strerror(-ret));
8037         }
8038         return ret;
8039
8040 fail:
8041         ret = -ENOBUFS;
8042 error:
8043         nlmsg_free(msg);
8044         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8045         return ret;
8046 }
8047
8048
8049 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8050                           u8 user_priority, u16 admitted_time)
8051 {
8052         struct i802_bss *bss = priv;
8053         struct wpa_driver_nl80211_data *drv = bss->drv;
8054         struct nl_msg *msg;
8055         int ret;
8056
8057         wpa_printf(MSG_DEBUG,
8058                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8059                    tsid, admitted_time, user_priority);
8060
8061         if (!is_sta_interface(drv->nlmode))
8062                 return -ENOTSUP;
8063
8064         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
8065         if (!msg ||
8066             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8067             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8068             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
8069             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
8070                 nlmsg_free(msg);
8071                 return -ENOBUFS;
8072         }
8073
8074         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8075         if (ret)
8076                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8077                            ret, strerror(-ret));
8078         return ret;
8079 }
8080
8081
8082 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8083 {
8084         struct i802_bss *bss = priv;
8085         struct wpa_driver_nl80211_data *drv = bss->drv;
8086         struct nl_msg *msg;
8087         int ret;
8088
8089         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8090
8091         if (!is_sta_interface(drv->nlmode))
8092                 return -ENOTSUP;
8093
8094         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
8095             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8096             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
8097                 nlmsg_free(msg);
8098                 return -ENOBUFS;
8099         }
8100
8101         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8102         if (ret)
8103                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8104                            ret, strerror(-ret));
8105         return ret;
8106 }
8107
8108
8109 #ifdef CONFIG_TESTING_OPTIONS
8110 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8111 {
8112         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8113         struct wpabuf *buf = arg;
8114
8115         if (!buf)
8116                 return NL_SKIP;
8117
8118         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8119                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8120                 return NL_SKIP;
8121         }
8122
8123         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8124                         genlmsg_attrlen(gnlh, 0));
8125
8126         return NL_SKIP;
8127 }
8128 #endif /* CONFIG_TESTING_OPTIONS */
8129
8130
8131 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8132 {
8133         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8134         struct nlattr *nl_vendor_reply, *nl;
8135         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8136         struct wpabuf *buf = arg;
8137         int rem;
8138
8139         if (!buf)
8140                 return NL_SKIP;
8141
8142         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8143                   genlmsg_attrlen(gnlh, 0), NULL);
8144         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8145
8146         if (!nl_vendor_reply)
8147                 return NL_SKIP;
8148
8149         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8150                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8151                 return NL_SKIP;
8152         }
8153
8154         nla_for_each_nested(nl, nl_vendor_reply, rem) {
8155                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8156         }
8157
8158         return NL_SKIP;
8159 }
8160
8161
8162 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8163                               unsigned int subcmd, const u8 *data,
8164                               size_t data_len, struct wpabuf *buf)
8165 {
8166         struct i802_bss *bss = priv;
8167         struct wpa_driver_nl80211_data *drv = bss->drv;
8168         struct nl_msg *msg;
8169         int ret;
8170
8171 #ifdef CONFIG_TESTING_OPTIONS
8172         if (vendor_id == 0xffffffff) {
8173                 msg = nlmsg_alloc();
8174                 if (!msg)
8175                         return -ENOMEM;
8176
8177                 nl80211_cmd(drv, msg, 0, subcmd);
8178                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8179                     0)
8180                         goto fail;
8181                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8182                 if (ret)
8183                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8184                                    ret);
8185                 return ret;
8186         }
8187 #endif /* CONFIG_TESTING_OPTIONS */
8188
8189         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
8190             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
8191             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
8192             (data &&
8193              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
8194                 goto fail;
8195
8196         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8197         if (ret)
8198                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8199                            ret);
8200         return ret;
8201
8202 fail:
8203         nlmsg_free(msg);
8204         return -ENOBUFS;
8205 }
8206
8207
8208 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8209                                u8 qos_map_set_len)
8210 {
8211         struct i802_bss *bss = priv;
8212         struct wpa_driver_nl80211_data *drv = bss->drv;
8213         struct nl_msg *msg;
8214         int ret;
8215
8216         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8217                     qos_map_set, qos_map_set_len);
8218
8219         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
8220             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
8221                 nlmsg_free(msg);
8222                 return -ENOBUFS;
8223         }
8224
8225         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8226         if (ret)
8227                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8228
8229         return ret;
8230 }
8231
8232
8233 static int nl80211_set_wowlan(void *priv,
8234                               const struct wowlan_triggers *triggers)
8235 {
8236         struct i802_bss *bss = priv;
8237         struct wpa_driver_nl80211_data *drv = bss->drv;
8238         struct nl_msg *msg;
8239         struct nlattr *wowlan_triggers;
8240         int ret;
8241
8242         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8243
8244         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_SET_WOWLAN)) ||
8245             !(wowlan_triggers = nla_nest_start(msg,
8246                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
8247             (triggers->any &&
8248              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8249             (triggers->disconnect &&
8250              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8251             (triggers->magic_pkt &&
8252              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8253             (triggers->gtk_rekey_failure &&
8254              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8255             (triggers->eap_identity_req &&
8256              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8257             (triggers->four_way_handshake &&
8258              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8259             (triggers->rfkill_release &&
8260              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
8261                 nlmsg_free(msg);
8262                 return -ENOBUFS;
8263         }
8264
8265         nla_nest_end(msg, wowlan_triggers);
8266
8267         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8268         if (ret)
8269                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8270
8271         return ret;
8272 }
8273
8274
8275 #ifdef CONFIG_DRIVER_NL80211_QCA
8276 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8277 {
8278         struct i802_bss *bss = priv;
8279         struct wpa_driver_nl80211_data *drv = bss->drv;
8280         struct nl_msg *msg;
8281         struct nlattr *params;
8282
8283         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8284
8285         if (!drv->roaming_vendor_cmd_avail) {
8286                 wpa_printf(MSG_DEBUG,
8287                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8288                 return -1;
8289         }
8290
8291         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8292             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8293             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8294                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
8295             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8296             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8297                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8298                         QCA_ROAMING_NOT_ALLOWED) ||
8299             (bssid &&
8300              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
8301                 nlmsg_free(msg);
8302                 return -1;
8303         }
8304         nla_nest_end(msg, params);
8305
8306         return send_and_recv_msgs(drv, msg, NULL, NULL);
8307 }
8308 #endif /* CONFIG_DRIVER_NL80211_QCA */
8309
8310
8311 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8312 {
8313         struct i802_bss *bss = priv;
8314         struct wpa_driver_nl80211_data *drv = bss->drv;
8315         int new_addr = addr != NULL;
8316
8317         if (TEST_FAIL())
8318                 return -1;
8319
8320         if (!addr)
8321                 addr = drv->perm_addr;
8322
8323         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8324                 return -1;
8325
8326         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8327         {
8328                 wpa_printf(MSG_DEBUG,
8329                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8330                            bss->ifname, MAC2STR(addr));
8331                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8332                                           1) < 0) {
8333                         wpa_printf(MSG_DEBUG,
8334                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8335                 }
8336                 return -1;
8337         }
8338
8339         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8340                    bss->ifname, MAC2STR(addr));
8341         drv->addr_changed = new_addr;
8342         os_memcpy(bss->addr, addr, ETH_ALEN);
8343
8344         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8345         {
8346                 wpa_printf(MSG_DEBUG,
8347                            "nl80211: Could not restore interface UP after set_mac_addr");
8348         }
8349
8350         return 0;
8351 }
8352
8353
8354 #ifdef CONFIG_MESH
8355
8356 static int wpa_driver_nl80211_init_mesh(void *priv)
8357 {
8358         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8359                 wpa_printf(MSG_INFO,
8360                            "nl80211: Failed to set interface into mesh mode");
8361                 return -1;
8362         }
8363         return 0;
8364 }
8365
8366
8367 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
8368                                size_t mesh_id_len)
8369 {
8370         if (mesh_id) {
8371                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
8372                                   mesh_id, mesh_id_len);
8373                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
8374         }
8375
8376         return 0;
8377 }
8378
8379
8380 static int nl80211_join_mesh(struct i802_bss *bss,
8381                              struct wpa_driver_mesh_join_params *params)
8382 {
8383         struct wpa_driver_nl80211_data *drv = bss->drv;
8384         struct nl_msg *msg;
8385         struct nlattr *container;
8386         int ret = -1;
8387
8388         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8389         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
8390         if (!msg ||
8391             nl80211_put_freq_params(msg, &params->freq) ||
8392             nl80211_put_basic_rates(msg, params->basic_rates) ||
8393             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
8394             nl80211_put_beacon_int(msg, params->beacon_int))
8395                 goto fail;
8396
8397         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8398
8399         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8400         if (!container)
8401                 goto fail;
8402
8403         if (params->ies) {
8404                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8405                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8406                             params->ies))
8407                         goto fail;
8408         }
8409         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8410         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8411                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8412                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8413                         goto fail;
8414         }
8415         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8416             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8417                 goto fail;
8418         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8419             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8420                 goto fail;
8421         nla_nest_end(msg, container);
8422
8423         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8424         if (!container)
8425                 goto fail;
8426
8427         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8428             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8429                 goto fail;
8430         if (nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8431                         params->max_peer_links))
8432                 goto fail;
8433
8434         /*
8435          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
8436          * the timer could disconnect stations even in that case.
8437          */
8438         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8439                         params->conf.peer_link_timeout)) {
8440                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8441                 goto fail;
8442         }
8443
8444         nla_nest_end(msg, container);
8445
8446         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8447         msg = NULL;
8448         if (ret) {
8449                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8450                            ret, strerror(-ret));
8451                 goto fail;
8452         }
8453         ret = 0;
8454         drv->assoc_freq = bss->freq = params->freq.freq;
8455         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8456
8457 fail:
8458         nlmsg_free(msg);
8459         return ret;
8460 }
8461
8462
8463 static int
8464 wpa_driver_nl80211_join_mesh(void *priv,
8465                              struct wpa_driver_mesh_join_params *params)
8466 {
8467         struct i802_bss *bss = priv;
8468         int ret, timeout;
8469
8470         timeout = params->conf.peer_link_timeout;
8471
8472         /* Disable kernel inactivity timer */
8473         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8474                 params->conf.peer_link_timeout = 0;
8475
8476         ret = nl80211_join_mesh(bss, params);
8477         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8478                 wpa_printf(MSG_DEBUG,
8479                            "nl80211: Mesh join retry for peer_link_timeout");
8480                 /*
8481                  * Old kernel does not support setting
8482                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8483                  * into future from peer_link_timeout.
8484                  */
8485                 params->conf.peer_link_timeout = timeout + 60;
8486                 ret = nl80211_join_mesh(priv, params);
8487         }
8488
8489         params->conf.peer_link_timeout = timeout;
8490         return ret;
8491 }
8492
8493
8494 static int wpa_driver_nl80211_leave_mesh(void *priv)
8495 {
8496         struct i802_bss *bss = priv;
8497         struct wpa_driver_nl80211_data *drv = bss->drv;
8498         struct nl_msg *msg;
8499         int ret;
8500
8501         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8502         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8503         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8504         if (ret) {
8505                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8506                            ret, strerror(-ret));
8507         } else {
8508                 wpa_printf(MSG_DEBUG,
8509                            "nl80211: mesh leave request send successfully");
8510         }
8511
8512         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8513                                         NL80211_IFTYPE_STATION)) {
8514                 wpa_printf(MSG_INFO,
8515                            "nl80211: Failed to set interface into station mode");
8516         }
8517         return ret;
8518 }
8519
8520 #endif /* CONFIG_MESH */
8521
8522
8523 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8524                                       const u8 *ipaddr, int prefixlen,
8525                                       const u8 *addr)
8526 {
8527 #ifdef CONFIG_LIBNL3_ROUTE
8528         struct i802_bss *bss = priv;
8529         struct wpa_driver_nl80211_data *drv = bss->drv;
8530         struct rtnl_neigh *rn;
8531         struct nl_addr *nl_ipaddr = NULL;
8532         struct nl_addr *nl_lladdr = NULL;
8533         int family, addrsize;
8534         int res;
8535
8536         if (!ipaddr || prefixlen == 0 || !addr)
8537                 return -EINVAL;
8538
8539         if (bss->br_ifindex == 0) {
8540                 wpa_printf(MSG_DEBUG,
8541                            "nl80211: bridge must be set before adding an ip neigh to it");
8542                 return -1;
8543         }
8544
8545         if (!drv->rtnl_sk) {
8546                 wpa_printf(MSG_DEBUG,
8547                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8548                 return -1;
8549         }
8550
8551         if (version == 4) {
8552                 family = AF_INET;
8553                 addrsize = 4;
8554         } else if (version == 6) {
8555                 family = AF_INET6;
8556                 addrsize = 16;
8557         } else {
8558                 return -EINVAL;
8559         }
8560
8561         rn = rtnl_neigh_alloc();
8562         if (rn == NULL)
8563                 return -ENOMEM;
8564
8565         /* set the destination ip address for neigh */
8566         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8567         if (nl_ipaddr == NULL) {
8568                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8569                 res = -ENOMEM;
8570                 goto errout;
8571         }
8572         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8573         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8574         if (res) {
8575                 wpa_printf(MSG_DEBUG,
8576                            "nl80211: neigh set destination addr failed");
8577                 goto errout;
8578         }
8579
8580         /* set the corresponding lladdr for neigh */
8581         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8582         if (nl_lladdr == NULL) {
8583                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8584                 res = -ENOMEM;
8585                 goto errout;
8586         }
8587         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8588
8589         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8590         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8591
8592         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8593         if (res) {
8594                 wpa_printf(MSG_DEBUG,
8595                            "nl80211: Adding bridge ip neigh failed: %s",
8596                            strerror(errno));
8597         }
8598 errout:
8599         if (nl_lladdr)
8600                 nl_addr_put(nl_lladdr);
8601         if (nl_ipaddr)
8602                 nl_addr_put(nl_ipaddr);
8603         if (rn)
8604                 rtnl_neigh_put(rn);
8605         return res;
8606 #else /* CONFIG_LIBNL3_ROUTE */
8607         return -1;
8608 #endif /* CONFIG_LIBNL3_ROUTE */
8609 }
8610
8611
8612 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8613                                          const u8 *ipaddr)
8614 {
8615 #ifdef CONFIG_LIBNL3_ROUTE
8616         struct i802_bss *bss = priv;
8617         struct wpa_driver_nl80211_data *drv = bss->drv;
8618         struct rtnl_neigh *rn;
8619         struct nl_addr *nl_ipaddr;
8620         int family, addrsize;
8621         int res;
8622
8623         if (!ipaddr)
8624                 return -EINVAL;
8625
8626         if (version == 4) {
8627                 family = AF_INET;
8628                 addrsize = 4;
8629         } else if (version == 6) {
8630                 family = AF_INET6;
8631                 addrsize = 16;
8632         } else {
8633                 return -EINVAL;
8634         }
8635
8636         if (bss->br_ifindex == 0) {
8637                 wpa_printf(MSG_DEBUG,
8638                            "nl80211: bridge must be set to delete an ip neigh");
8639                 return -1;
8640         }
8641
8642         if (!drv->rtnl_sk) {
8643                 wpa_printf(MSG_DEBUG,
8644                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8645                 return -1;
8646         }
8647
8648         rn = rtnl_neigh_alloc();
8649         if (rn == NULL)
8650                 return -ENOMEM;
8651
8652         /* set the destination ip address for neigh */
8653         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8654         if (nl_ipaddr == NULL) {
8655                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8656                 res = -ENOMEM;
8657                 goto errout;
8658         }
8659         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8660         if (res) {
8661                 wpa_printf(MSG_DEBUG,
8662                            "nl80211: neigh set destination addr failed");
8663                 goto errout;
8664         }
8665
8666         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8667
8668         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8669         if (res) {
8670                 wpa_printf(MSG_DEBUG,
8671                            "nl80211: Deleting bridge ip neigh failed: %s",
8672                            strerror(errno));
8673         }
8674 errout:
8675         if (nl_ipaddr)
8676                 nl_addr_put(nl_ipaddr);
8677         if (rn)
8678                 rtnl_neigh_put(rn);
8679         return res;
8680 #else /* CONFIG_LIBNL3_ROUTE */
8681         return -1;
8682 #endif /* CONFIG_LIBNL3_ROUTE */
8683 }
8684
8685
8686 static int linux_write_system_file(const char *path, unsigned int val)
8687 {
8688         char buf[50];
8689         int fd, len;
8690
8691         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8692         if (os_snprintf_error(sizeof(buf), len))
8693                 return -1;
8694
8695         fd = open(path, O_WRONLY);
8696         if (fd < 0)
8697                 return -1;
8698
8699         if (write(fd, buf, len) < 0) {
8700                 wpa_printf(MSG_DEBUG,
8701                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8702                            path, val);
8703                 close(fd);
8704                 return -1;
8705         }
8706         close(fd);
8707
8708         return 0;
8709 }
8710
8711
8712 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8713 {
8714         switch (attr) {
8715         case DRV_BR_PORT_ATTR_PROXYARP:
8716                 return "proxyarp_wifi";
8717         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8718                 return "hairpin_mode";
8719         }
8720
8721         return NULL;
8722 }
8723
8724
8725 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8726                                        unsigned int val)
8727 {
8728         struct i802_bss *bss = priv;
8729         char path[128];
8730         const char *attr_txt;
8731
8732         attr_txt = drv_br_port_attr_str(attr);
8733         if (attr_txt == NULL)
8734                 return -EINVAL;
8735
8736         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8737                     bss->ifname, attr_txt);
8738
8739         if (linux_write_system_file(path, val))
8740                 return -1;
8741
8742         return 0;
8743 }
8744
8745
8746 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8747 {
8748         switch (param) {
8749         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8750                 return "arp_accept";
8751         default:
8752                 return NULL;
8753         }
8754 }
8755
8756
8757 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8758                                        unsigned int val)
8759 {
8760         struct i802_bss *bss = priv;
8761         char path[128];
8762         const char *param_txt;
8763         int ip_version = 4;
8764
8765         if (param == DRV_BR_MULTICAST_SNOOPING) {
8766                 os_snprintf(path, sizeof(path),
8767                             "/sys/devices/virtual/net/%s/bridge/multicast_snooping",
8768                             bss->brname);
8769                 goto set_val;
8770         }
8771
8772         param_txt = drv_br_net_param_str(param);
8773         if (param_txt == NULL)
8774                 return -EINVAL;
8775
8776         switch (param) {
8777                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8778                         ip_version = 4;
8779                         break;
8780                 default:
8781                         return -EINVAL;
8782         }
8783
8784         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8785                     ip_version, bss->brname, param_txt);
8786
8787 set_val:
8788         if (linux_write_system_file(path, val))
8789                 return -1;
8790
8791         return 0;
8792 }
8793
8794
8795 #ifdef CONFIG_DRIVER_NL80211_QCA
8796
8797 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8798 {
8799         switch (hw_mode) {
8800         case HOSTAPD_MODE_IEEE80211B:
8801                 return QCA_ACS_MODE_IEEE80211B;
8802         case HOSTAPD_MODE_IEEE80211G:
8803                 return QCA_ACS_MODE_IEEE80211G;
8804         case HOSTAPD_MODE_IEEE80211A:
8805                 return QCA_ACS_MODE_IEEE80211A;
8806         case HOSTAPD_MODE_IEEE80211AD:
8807                 return QCA_ACS_MODE_IEEE80211AD;
8808         case HOSTAPD_MODE_IEEE80211ANY:
8809                 return QCA_ACS_MODE_IEEE80211ANY;
8810         default:
8811                 return -1;
8812         }
8813 }
8814
8815
8816 static int add_acs_freq_list(struct nl_msg *msg, const int *freq_list)
8817 {
8818         int i, len, ret;
8819         u32 *freqs;
8820
8821         if (!freq_list)
8822                 return 0;
8823         len = int_array_len(freq_list);
8824         freqs = os_malloc(sizeof(u32) * len);
8825         if (!freqs)
8826                 return -1;
8827         for (i = 0; i < len; i++)
8828                 freqs[i] = freq_list[i];
8829         ret = nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_FREQ_LIST,
8830                       sizeof(u32) * len, freqs);
8831         os_free(freqs);
8832         return ret;
8833 }
8834
8835
8836 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8837 {
8838         struct i802_bss *bss = priv;
8839         struct wpa_driver_nl80211_data *drv = bss->drv;
8840         struct nl_msg *msg;
8841         struct nlattr *data;
8842         int ret;
8843         int mode;
8844
8845         mode = hw_mode_to_qca_acs(params->hw_mode);
8846         if (mode < 0)
8847                 return -1;
8848
8849         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8850             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8851             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8852                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8853             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8854             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8855             (params->ht_enabled &&
8856              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8857             (params->ht40_enabled &&
8858              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED)) ||
8859             (params->vht_enabled &&
8860              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_VHT_ENABLED)) ||
8861             nla_put_u16(msg, QCA_WLAN_VENDOR_ATTR_ACS_CHWIDTH,
8862                         params->ch_width) ||
8863             (params->ch_list_len &&
8864              nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_CH_LIST, params->ch_list_len,
8865                      params->ch_list)) ||
8866             add_acs_freq_list(msg, params->freq_list)) {
8867                 nlmsg_free(msg);
8868                 return -ENOBUFS;
8869         }
8870         nla_nest_end(msg, data);
8871
8872         wpa_printf(MSG_DEBUG,
8873                    "nl80211: ACS Params: HW_MODE: %d HT: %d HT40: %d VHT: %d BW: %d CH_LIST_LEN: %u",
8874                    params->hw_mode, params->ht_enabled, params->ht40_enabled,
8875                    params->vht_enabled, params->ch_width, params->ch_list_len);
8876
8877         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8878         if (ret) {
8879                 wpa_printf(MSG_DEBUG,
8880                            "nl80211: Failed to invoke driver ACS function: %s",
8881                            strerror(errno));
8882         }
8883         return ret;
8884 }
8885
8886
8887 static int nl80211_set_band(void *priv, enum set_band band)
8888 {
8889         struct i802_bss *bss = priv;
8890         struct wpa_driver_nl80211_data *drv = bss->drv;
8891         struct nl_msg *msg;
8892         struct nlattr *data;
8893         int ret;
8894         enum qca_set_band qca_band;
8895
8896         if (!drv->setband_vendor_cmd_avail)
8897                 return -1;
8898
8899         switch (band) {
8900         case WPA_SETBAND_AUTO:
8901                 qca_band = QCA_SETBAND_AUTO;
8902                 break;
8903         case WPA_SETBAND_5G:
8904                 qca_band = QCA_SETBAND_5G;
8905                 break;
8906         case WPA_SETBAND_2G:
8907                 qca_band = QCA_SETBAND_2G;
8908                 break;
8909         default:
8910                 return -1;
8911         }
8912
8913         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8914             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8915             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8916                         QCA_NL80211_VENDOR_SUBCMD_SETBAND) ||
8917             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8918             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_SETBAND_VALUE, qca_band)) {
8919                 nlmsg_free(msg);
8920                 return -ENOBUFS;
8921         }
8922         nla_nest_end(msg, data);
8923
8924         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8925         if (ret) {
8926                 wpa_printf(MSG_DEBUG,
8927                            "nl80211: Driver setband function failed: %s",
8928                            strerror(errno));
8929         }
8930         return ret;
8931 }
8932
8933
8934 struct nl80211_pcl {
8935         unsigned int num;
8936         unsigned int *freq_list;
8937 };
8938
8939 static int preferred_freq_info_handler(struct nl_msg *msg, void *arg)
8940 {
8941         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8942         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8943         struct nl80211_pcl *param = arg;
8944         struct nlattr *nl_vend, *attr;
8945         enum qca_iface_type iface_type;
8946         struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
8947         unsigned int num, max_num;
8948         u32 *freqs;
8949
8950         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8951                   genlmsg_attrlen(gnlh, 0), NULL);
8952
8953         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
8954         if (!nl_vend)
8955                 return NL_SKIP;
8956
8957         nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
8958                   nla_data(nl_vend), nla_len(nl_vend), NULL);
8959
8960         attr = tb_vendor[
8961                 QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE];
8962         if (!attr) {
8963                 wpa_printf(MSG_ERROR, "nl80211: iface_type couldn't be found");
8964                 param->num = 0;
8965                 return NL_SKIP;
8966         }
8967
8968         iface_type = (enum qca_iface_type) nla_get_u32(attr);
8969         wpa_printf(MSG_DEBUG, "nl80211: Driver returned iface_type=%d",
8970                    iface_type);
8971
8972         attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST];
8973         if (!attr) {
8974                 wpa_printf(MSG_ERROR,
8975                            "nl80211: preferred_freq_list couldn't be found");
8976                 param->num = 0;
8977                 return NL_SKIP;
8978         }
8979
8980         /*
8981          * param->num has the maximum number of entries for which there
8982          * is room in the freq_list provided by the caller.
8983          */
8984         freqs = nla_data(attr);
8985         max_num = nla_len(attr) / sizeof(u32);
8986         if (max_num > param->num)
8987                 max_num = param->num;
8988         for (num = 0; num < max_num; num++)
8989                 param->freq_list[num] = freqs[num];
8990         param->num = num;
8991
8992         return NL_SKIP;
8993 }
8994
8995
8996 static int nl80211_get_pref_freq_list(void *priv,
8997                                       enum wpa_driver_if_type if_type,
8998                                       unsigned int *num,
8999                                       unsigned int *freq_list)
9000 {
9001         struct i802_bss *bss = priv;
9002         struct wpa_driver_nl80211_data *drv = bss->drv;
9003         struct nl_msg *msg;
9004         int ret;
9005         unsigned int i;
9006         struct nlattr *params;
9007         struct nl80211_pcl param;
9008         enum qca_iface_type iface_type;
9009
9010         if (!drv->get_pref_freq_list)
9011                 return -1;
9012
9013         switch (if_type) {
9014         case WPA_IF_STATION:
9015                 iface_type = QCA_IFACE_TYPE_STA;
9016                 break;
9017         case WPA_IF_AP_BSS:
9018                 iface_type = QCA_IFACE_TYPE_AP;
9019                 break;
9020         case WPA_IF_P2P_GO:
9021                 iface_type = QCA_IFACE_TYPE_P2P_GO;
9022                 break;
9023         case WPA_IF_P2P_CLIENT:
9024                 iface_type = QCA_IFACE_TYPE_P2P_CLIENT;
9025                 break;
9026         case WPA_IF_IBSS:
9027                 iface_type = QCA_IFACE_TYPE_IBSS;
9028                 break;
9029         case WPA_IF_TDLS:
9030                 iface_type = QCA_IFACE_TYPE_TDLS;
9031                 break;
9032         default:
9033                 return -1;
9034         }
9035
9036         param.num = *num;
9037         param.freq_list = freq_list;
9038
9039         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9040             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
9041             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9042             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9043                         QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST) ||
9044             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9045             nla_put_u32(msg,
9046                         QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE,
9047                         iface_type)) {
9048                 wpa_printf(MSG_ERROR,
9049                            "%s: err in adding vendor_cmd and vendor_data",
9050                            __func__);
9051                 nlmsg_free(msg);
9052                 return -1;
9053         }
9054         nla_nest_end(msg, params);
9055
9056         os_memset(freq_list, 0, *num * sizeof(freq_list[0]));
9057         ret = send_and_recv_msgs(drv, msg, preferred_freq_info_handler, &param);
9058         if (ret) {
9059                 wpa_printf(MSG_ERROR,
9060                            "%s: err in send_and_recv_msgs", __func__);
9061                 return ret;
9062         }
9063
9064         *num = param.num;
9065
9066         for (i = 0; i < *num; i++) {
9067                 wpa_printf(MSG_DEBUG, "nl80211: preferred_channel_list[%d]=%d",
9068                            i, freq_list[i]);
9069         }
9070
9071         return 0;
9072 }
9073
9074
9075 static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
9076 {
9077         struct i802_bss *bss = priv;
9078         struct wpa_driver_nl80211_data *drv = bss->drv;
9079         struct nl_msg *msg;
9080         int ret;
9081         struct nlattr *params;
9082
9083         if (!drv->set_prob_oper_freq)
9084                 return -1;
9085
9086         wpa_printf(MSG_DEBUG,
9087                    "nl80211: Set P2P probable operating freq %u for ifindex %d",
9088                    freq, bss->ifindex);
9089
9090         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9091             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9092             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9093                         QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL) ||
9094             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9095             nla_put_u32(msg,
9096                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_IFACE_TYPE,
9097                         QCA_IFACE_TYPE_P2P_CLIENT) ||
9098             nla_put_u32(msg,
9099                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_FREQ,
9100                         freq)) {
9101                 wpa_printf(MSG_ERROR,
9102                            "%s: err in adding vendor_cmd and vendor_data",
9103                            __func__);
9104                 nlmsg_free(msg);
9105                 return -1;
9106         }
9107         nla_nest_end(msg, params);
9108
9109         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9110         msg = NULL;
9111         if (ret) {
9112                 wpa_printf(MSG_ERROR, "%s: err in send_and_recv_msgs",
9113                            __func__);
9114                 return ret;
9115         }
9116         nlmsg_free(msg);
9117         return 0;
9118 }
9119
9120 #endif /* CONFIG_DRIVER_NL80211_QCA */
9121
9122
9123 static int nl80211_write_to_file(const char *name, unsigned int val)
9124 {
9125         int fd, len;
9126         char tmp[128];
9127
9128         fd = open(name, O_RDWR);
9129         if (fd < 0) {
9130                 wpa_printf(MSG_ERROR, "nl80211: Failed to open %s: %s",
9131                            name, strerror(errno));
9132                 return fd;
9133         }
9134
9135         len = os_snprintf(tmp, sizeof(tmp), "%u\n", val);
9136         len = write(fd, tmp, len);
9137         if (len < 0)
9138                 wpa_printf(MSG_ERROR, "nl80211: Failed to write to %s: %s",
9139                            name, strerror(errno));
9140         close(fd);
9141
9142         return 0;
9143 }
9144
9145
9146 static int nl80211_configure_data_frame_filters(void *priv, u32 filter_flags)
9147 {
9148         struct i802_bss *bss = priv;
9149         char path[128];
9150         int ret;
9151
9152         wpa_printf(MSG_DEBUG, "nl80211: Data frame filter flags=0x%x",
9153                    filter_flags);
9154
9155         /* Configure filtering of unicast frame encrypted using GTK */
9156         ret = os_snprintf(path, sizeof(path),
9157                           "/proc/sys/net/ipv4/conf/%s/drop_unicast_in_l2_multicast",
9158                           bss->ifname);
9159         if (os_snprintf_error(sizeof(path), ret))
9160                 return -1;
9161
9162         ret = nl80211_write_to_file(path,
9163                                     !!(filter_flags &
9164                                        WPA_DATA_FRAME_FILTER_FLAG_GTK));
9165         if (ret) {
9166                 wpa_printf(MSG_ERROR,
9167                            "nl80211: Failed to set IPv4 unicast in multicast filter");
9168                 return ret;
9169         }
9170
9171         os_snprintf(path, sizeof(path),
9172                     "/proc/sys/net/ipv6/conf/%s/drop_unicast_in_l2_multicast",
9173                     bss->ifname);
9174         ret = nl80211_write_to_file(path,
9175                                     !!(filter_flags &
9176                                        WPA_DATA_FRAME_FILTER_FLAG_GTK));
9177
9178         if (ret) {
9179                 wpa_printf(MSG_ERROR,
9180                            "nl80211: Failed to set IPv6 unicast in multicast filter");
9181                 return ret;
9182         }
9183
9184         /* Configure filtering of unicast frame encrypted using GTK */
9185         os_snprintf(path, sizeof(path),
9186                     "/proc/sys/net/ipv4/conf/%s/drop_gratuitous_arp",
9187                     bss->ifname);
9188         ret = nl80211_write_to_file(path,
9189                                     !!(filter_flags &
9190                                        WPA_DATA_FRAME_FILTER_FLAG_ARP));
9191         if (ret) {
9192                 wpa_printf(MSG_ERROR,
9193                            "nl80211: Failed set gratuitous ARP filter");
9194                 return ret;
9195         }
9196
9197         /* Configure filtering of IPv6 NA frames */
9198         os_snprintf(path, sizeof(path),
9199                     "/proc/sys/net/ipv6/conf/%s/drop_unsolicited_na",
9200                     bss->ifname);
9201         ret = nl80211_write_to_file(path,
9202                                     !!(filter_flags &
9203                                        WPA_DATA_FRAME_FILTER_FLAG_NA));
9204         if (ret) {
9205                 wpa_printf(MSG_ERROR,
9206                            "nl80211: Failed to set unsolicited NA filter");
9207                 return ret;
9208         }
9209
9210         return 0;
9211 }
9212
9213
9214 static int nl80211_get_ext_capab(void *priv, enum wpa_driver_if_type type,
9215                                  const u8 **ext_capa, const u8 **ext_capa_mask,
9216                                  unsigned int *ext_capa_len)
9217 {
9218         struct i802_bss *bss = priv;
9219         struct wpa_driver_nl80211_data *drv = bss->drv;
9220         enum nl80211_iftype nlmode;
9221         unsigned int i;
9222
9223         if (!ext_capa || !ext_capa_mask || !ext_capa_len)
9224                 return -1;
9225
9226         nlmode = wpa_driver_nl80211_if_type(type);
9227
9228         /* By default, use the per-radio values */
9229         *ext_capa = drv->extended_capa;
9230         *ext_capa_mask = drv->extended_capa_mask;
9231         *ext_capa_len = drv->extended_capa_len;
9232
9233         /* Replace the default value if a per-interface type value exists */
9234         for (i = 0; i < drv->num_iface_ext_capa; i++) {
9235                 if (nlmode == drv->iface_ext_capa[i].iftype) {
9236                         *ext_capa = drv->iface_ext_capa[i].ext_capa;
9237                         *ext_capa_mask = drv->iface_ext_capa[i].ext_capa_mask;
9238                         *ext_capa_len = drv->iface_ext_capa[i].ext_capa_len;
9239                         break;
9240                 }
9241         }
9242
9243         return 0;
9244 }
9245
9246
9247 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9248         .name = "nl80211",
9249         .desc = "Linux nl80211/cfg80211",
9250         .get_bssid = wpa_driver_nl80211_get_bssid,
9251         .get_ssid = wpa_driver_nl80211_get_ssid,
9252         .set_key = driver_nl80211_set_key,
9253         .scan2 = driver_nl80211_scan2,
9254         .sched_scan = wpa_driver_nl80211_sched_scan,
9255         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9256         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9257         .abort_scan = wpa_driver_nl80211_abort_scan,
9258         .deauthenticate = driver_nl80211_deauthenticate,
9259         .authenticate = driver_nl80211_authenticate,
9260         .associate = wpa_driver_nl80211_associate,
9261         .global_init = nl80211_global_init,
9262         .global_deinit = nl80211_global_deinit,
9263         .init2 = wpa_driver_nl80211_init,
9264         .deinit = driver_nl80211_deinit,
9265         .get_capa = wpa_driver_nl80211_get_capa,
9266         .set_operstate = wpa_driver_nl80211_set_operstate,
9267         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9268         .set_country = wpa_driver_nl80211_set_country,
9269         .get_country = wpa_driver_nl80211_get_country,
9270         .set_ap = wpa_driver_nl80211_set_ap,
9271         .set_acl = wpa_driver_nl80211_set_acl,
9272         .if_add = wpa_driver_nl80211_if_add,
9273         .if_remove = driver_nl80211_if_remove,
9274         .send_mlme = driver_nl80211_send_mlme,
9275         .get_hw_feature_data = nl80211_get_hw_feature_data,
9276         .sta_add = wpa_driver_nl80211_sta_add,
9277         .sta_remove = driver_nl80211_sta_remove,
9278         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9279         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9280         .hapd_init = i802_init,
9281         .hapd_deinit = i802_deinit,
9282         .set_wds_sta = i802_set_wds_sta,
9283         .get_seqnum = i802_get_seqnum,
9284         .flush = i802_flush,
9285         .get_inact_sec = i802_get_inact_sec,
9286         .sta_clear_stats = i802_sta_clear_stats,
9287         .set_rts = i802_set_rts,
9288         .set_frag = i802_set_frag,
9289         .set_tx_queue_params = i802_set_tx_queue_params,
9290         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9291         .sta_deauth = i802_sta_deauth,
9292         .sta_disassoc = i802_sta_disassoc,
9293         .read_sta_data = driver_nl80211_read_sta_data,
9294         .set_freq = i802_set_freq,
9295         .send_action = driver_nl80211_send_action,
9296         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9297         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9298         .cancel_remain_on_channel =
9299         wpa_driver_nl80211_cancel_remain_on_channel,
9300         .probe_req_report = driver_nl80211_probe_req_report,
9301         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9302         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9303         .resume = wpa_driver_nl80211_resume,
9304         .signal_monitor = nl80211_signal_monitor,
9305         .signal_poll = nl80211_signal_poll,
9306         .send_frame = nl80211_send_frame,
9307         .set_param = nl80211_set_param,
9308         .get_radio_name = nl80211_get_radio_name,
9309         .add_pmkid = nl80211_add_pmkid,
9310         .remove_pmkid = nl80211_remove_pmkid,
9311         .flush_pmkid = nl80211_flush_pmkid,
9312         .set_rekey_info = nl80211_set_rekey_info,
9313         .poll_client = nl80211_poll_client,
9314         .set_p2p_powersave = nl80211_set_p2p_powersave,
9315         .start_dfs_cac = nl80211_start_radar_detection,
9316         .stop_ap = wpa_driver_nl80211_stop_ap,
9317 #ifdef CONFIG_TDLS
9318         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9319         .tdls_oper = nl80211_tdls_oper,
9320         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
9321         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
9322 #endif /* CONFIG_TDLS */
9323         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9324         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9325         .get_survey = wpa_driver_nl80211_get_survey,
9326         .status = wpa_driver_nl80211_status,
9327         .switch_channel = nl80211_switch_channel,
9328 #ifdef ANDROID_P2P
9329         .set_noa = wpa_driver_set_p2p_noa,
9330         .get_noa = wpa_driver_get_p2p_noa,
9331         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9332 #endif /* ANDROID_P2P */
9333 #ifdef ANDROID
9334 #ifndef ANDROID_LIB_STUB
9335         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9336 #endif /* !ANDROID_LIB_STUB */
9337 #endif /* ANDROID */
9338         .vendor_cmd = nl80211_vendor_cmd,
9339         .set_qos_map = nl80211_set_qos_map,
9340         .set_wowlan = nl80211_set_wowlan,
9341 #ifdef CONFIG_DRIVER_NL80211_QCA
9342         .roaming = nl80211_roaming,
9343 #endif /* CONFIG_DRIVER_NL80211_QCA */
9344         .set_mac_addr = nl80211_set_mac_addr,
9345 #ifdef CONFIG_MESH
9346         .init_mesh = wpa_driver_nl80211_init_mesh,
9347         .join_mesh = wpa_driver_nl80211_join_mesh,
9348         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9349 #endif /* CONFIG_MESH */
9350         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9351         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9352         .br_port_set_attr = wpa_driver_br_port_set_attr,
9353         .br_set_net_param = wpa_driver_br_set_net_param,
9354         .add_tx_ts = nl80211_add_ts,
9355         .del_tx_ts = nl80211_del_ts,
9356         .get_ifindex = nl80211_get_ifindex,
9357 #ifdef CONFIG_DRIVER_NL80211_QCA
9358         .do_acs = wpa_driver_do_acs,
9359         .set_band = nl80211_set_band,
9360         .get_pref_freq_list = nl80211_get_pref_freq_list,
9361         .set_prob_oper_freq = nl80211_set_prob_oper_freq,
9362 #endif /* CONFIG_DRIVER_NL80211_QCA */
9363         .configure_data_frame_filters = nl80211_configure_data_frame_filters,
9364         .get_ext_capab = nl80211_get_ext_capab,
9365 };