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