src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This software may be distributed under the terms of the BSD license.
  10  * See README for more details.
  11  */
  12
  13 #include "includes.h"
  14 #include <sys/types.h>
  15 #include <fcntl.h>
  16 #include <net/if.h>
  17 #include <netlink/genl/genl.h>
  18 #include <netlink/genl/ctrl.h>
  19 #ifdef CONFIG_LIBNL3_ROUTE
  20 #include <netlink/route/neighbour.h>
  21 #endif /* CONFIG_LIBNL3_ROUTE */
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/errqueue.h>
  25
  26 #include "common.h"
  27 #include "eloop.h"
  28 #include "common/qca-vendor.h"
  29 #include "common/qca-vendor-attr.h"
  30 #include "common/ieee802_11_defs.h"
  31 #include "common/ieee802_11_common.h"
  32 #include "l2_packet/l2_packet.h"
  33 #include "netlink.h"
  34 #include "linux_defines.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver_nl80211.h"
  40
  41
  42 #ifndef CONFIG_LIBNL20
  43 /*
  44  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  45  * but when you free a socket again it will mess up its bitmap and
  46  * and use the wrong number the next time it needs a socket ID.
  47  * Therefore, we wrap the handle alloc/destroy and add our own pid
  48  * accounting.
  49  */
  50 static uint32_t port_bitmap[32] = { 0 };
  51
  52 static struct nl_handle *nl80211_handle_alloc(void *cb)
  53 {
  54         struct nl_handle *handle;
  55         uint32_t pid = getpid() & 0x3FFFFF;
  56         int i;
  57
  58         handle = nl_handle_alloc_cb(cb);
  59
  60         for (i = 0; i < 1024; i++) {
  61                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  62                         continue;
  63                 port_bitmap[i / 32] |= 1 << (i % 32);
  64                 pid += i << 22;
  65                 break;
  66         }
  67
  68         nl_socket_set_local_port(handle, pid);
  69
  70         return handle;
  71 }
  72
  73 static void nl80211_handle_destroy(struct nl_handle *handle)
  74 {
  75         uint32_t port = nl_socket_get_local_port(handle);
  76
  77         port >>= 22;
  78         port_bitmap[port / 32] &= ~(1 << (port % 32));
  79
  80         nl_handle_destroy(handle);
  81 }
  82 #endif /* CONFIG_LIBNL20 */
  83
  84
  85 #ifdef ANDROID
  86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
  87 #undef nl_socket_set_nonblocking
  88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
  89
  90 #endif /* ANDROID */
  91
  92
  93 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  94 {
  95         struct nl_handle *handle;
  96
  97         handle = nl80211_handle_alloc(cb);
  98         if (handle == NULL) {
  99                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 100                            "callbacks (%s)", dbg);
 101                 return NULL;
 102         }
 103
 104         if (genl_connect(handle)) {
 105                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 106                            "netlink (%s)", dbg);
 107                 nl80211_handle_destroy(handle);
 108                 return NULL;
 109         }
 110
 111         return handle;
 112 }
 113
 114
 115 static void nl_destroy_handles(struct nl_handle **handle)
 116 {
 117         if (*handle == NULL)
 118                 return;
 119         nl80211_handle_destroy(*handle);
 120         *handle = NULL;
 121 }
 122
 123
 124 #if __WORDSIZE == 64
 125 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 126 #else
 127 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 128 #endif
 129
 130 static void nl80211_register_eloop_read(struct nl_handle **handle,
 131                                         eloop_sock_handler handler,
 132                                         void *eloop_data)
 133 {
 134 #ifdef CONFIG_LIBNL20
 135         /*
 136          * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
 137          * by default. It is possible to hit that limit in some cases where
 138          * operations are blocked, e.g., with a burst of Deauthentication frames
 139          * to hostapd and STA entry deletion. Try to increase the buffer to make
 140          * this less likely to occur.
 141          */
 142         if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
 143                 wpa_printf(MSG_DEBUG,
 144                            "nl80211: Could not set nl_socket RX buffer size: %s",
 145                            strerror(errno));
 146                 /* continue anyway with the default (smaller) buffer */
 147         }
 148 #endif /* CONFIG_LIBNL20 */
 149
 150         nl_socket_set_nonblocking(*handle);
 151         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 152                                  eloop_data, *handle);
 153         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 154 }
 155
 156
 157 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 158 {
 159         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 160         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 161         nl_destroy_handles(handle);
 162 }
 163
 164
 165 static void nl80211_global_deinit(void *priv);
 166 static void nl80211_check_global(struct nl80211_global *global);
 167
 168 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 169 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 170                                             struct hostapd_freq_params *freq);
 171
 172 static int
 173 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 174                                    const u8 *set_addr, int first,
 175                                    const char *driver_params);
 176 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 177                                   unsigned int freq, unsigned int wait,
 178                                   const u8 *buf, size_t buf_len, u64 *cookie,
 179                                   int no_cck, int no_ack, int offchanok,
 180                                   const u16 *csa_offs, size_t csa_offs_len);
 181 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 182                                                int report);
 183
 184 #define IFIDX_ANY -1
 185
 186 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 187                       int ifidx_reason);
 188 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 189                       int ifidx_reason);
 190 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 191                       int ifidx_reason);
 192
 193 static int nl80211_set_channel(struct i802_bss *bss,
 194                                struct hostapd_freq_params *freq, int set_chan);
 195 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 196                                      int ifindex, int disabled);
 197
 198 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 199                               int reset_mode);
 200
 201 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 202 static int nl80211_set_param(void *priv, const char *param);
 203
 204
 205 /* Converts nl80211_chan_width to a common format */
 206 enum chan_width convert2width(int width)
 207 {
 208         switch (width) {
 209         case NL80211_CHAN_WIDTH_20_NOHT:
 210                 return CHAN_WIDTH_20_NOHT;
 211         case NL80211_CHAN_WIDTH_20:
 212                 return CHAN_WIDTH_20;
 213         case NL80211_CHAN_WIDTH_40:
 214                 return CHAN_WIDTH_40;
 215         case NL80211_CHAN_WIDTH_80:
 216                 return CHAN_WIDTH_80;
 217         case NL80211_CHAN_WIDTH_80P80:
 218                 return CHAN_WIDTH_80P80;
 219         case NL80211_CHAN_WIDTH_160:
 220                 return CHAN_WIDTH_160;
 221         }
 222         return CHAN_WIDTH_UNKNOWN;
 223 }
 224
 225
 226 int is_ap_interface(enum nl80211_iftype nlmode)
 227 {
 228         return nlmode == NL80211_IFTYPE_AP ||
 229                 nlmode == NL80211_IFTYPE_P2P_GO;
 230 }
 231
 232
 233 int is_sta_interface(enum nl80211_iftype nlmode)
 234 {
 235         return nlmode == NL80211_IFTYPE_STATION ||
 236                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 237 }
 238
 239
 240 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 241 {
 242         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 243                 nlmode == NL80211_IFTYPE_P2P_GO;
 244 }
 245
 246
 247 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 248                                   int ifindex)
 249 {
 250         struct i802_bss *bss;
 251
 252         for (bss = drv->first_bss; bss; bss = bss->next) {
 253                 if (bss->ifindex == ifindex)
 254                         return bss;
 255         }
 256
 257         return NULL;
 258 }
 259
 260
 261 static int is_mesh_interface(enum nl80211_iftype nlmode)
 262 {
 263         return nlmode == NL80211_IFTYPE_MESH_POINT;
 264 }
 265
 266
 267 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 268 {
 269         if (drv->associated)
 270                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 271         drv->associated = 0;
 272         os_memset(drv->bssid, 0, ETH_ALEN);
 273 }
 274
 275
 276 /* nl80211 code */
 277 static int ack_handler(struct nl_msg *msg, void *arg)
 278 {
 279         int *err = arg;
 280         *err = 0;
 281         return NL_STOP;
 282 }
 283
 284 static int finish_handler(struct nl_msg *msg, void *arg)
 285 {
 286         int *ret = arg;
 287         *ret = 0;
 288         return NL_SKIP;
 289 }
 290
 291 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 292                          void *arg)
 293 {
 294         int *ret = arg;
 295         *ret = err->error;
 296         return NL_SKIP;
 297 }
 298
 299
 300 static int no_seq_check(struct nl_msg *msg, void *arg)
 301 {
 302         return NL_OK;
 303 }
 304
 305
 306 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 307 {
 308         /*
 309          * Clear nlmsg data, e.g., to make sure key material is not left in
 310          * heap memory for unnecessarily long time.
 311          */
 312         if (msg) {
 313                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 314                 void *data = nlmsg_data(hdr);
 315                 /*
 316                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 317                  * only libnl were to maintain a stable API.. Neither will work
 318                  * with all released versions, so just calculate the length
 319                  * here.
 320                  */
 321                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 322
 323                 os_memset(data, 0, len);
 324         }
 325 }
 326
 327
 328 static int send_and_recv(struct nl80211_global *global,
 329                          struct nl_handle *nl_handle, struct nl_msg *msg,
 330                          int (*valid_handler)(struct nl_msg *, void *),
 331                          void *valid_data)
 332 {
 333         struct nl_cb *cb;
 334         int err = -ENOMEM;
 335
 336         if (!msg)
 337                 return -ENOMEM;
 338
 339         cb = nl_cb_clone(global->nl_cb);
 340         if (!cb)
 341                 goto out;
 342
 343         err = nl_send_auto_complete(nl_handle, msg);
 344         if (err < 0)
 345                 goto out;
 346
 347         err = 1;
 348
 349         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 350         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 351         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 352
 353         if (valid_handler)
 354                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 355                           valid_handler, valid_data);
 356
 357         while (err > 0) {
 358                 int res = nl_recvmsgs(nl_handle, cb);
 359                 if (res < 0) {
 360                         wpa_printf(MSG_INFO,
 361                                    "nl80211: %s->nl_recvmsgs failed: %d",
 362                                    __func__, res);
 363                 }
 364         }
 365  out:
 366         nl_cb_put(cb);
 367         if (!valid_handler && valid_data == (void *) -1)
 368                 nl80211_nlmsg_clear(msg);
 369         nlmsg_free(msg);
 370         return err;
 371 }
 372
 373
 374 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 375                        struct nl_msg *msg,
 376                        int (*valid_handler)(struct nl_msg *, void *),
 377                        void *valid_data)
 378 {
 379         return send_and_recv(drv->global, drv->global->nl, msg,
 380                              valid_handler, valid_data);
 381 }
 382
 383
 384 struct family_data {
 385         const char *group;
 386         int id;
 387 };
 388
 389
 390 static int family_handler(struct nl_msg *msg, void *arg)
 391 {
 392         struct family_data *res = arg;
 393         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 394         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 395         struct nlattr *mcgrp;
 396         int i;
 397
 398         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 399                   genlmsg_attrlen(gnlh, 0), NULL);
 400         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 401                 return NL_SKIP;
 402
 403         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 404                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 405                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 406                           nla_len(mcgrp), NULL);
 407                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 408                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 409                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 410                                res->group,
 411                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 412                         continue;
 413                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 414                 break;
 415         };
 416
 417         return NL_SKIP;
 418 }
 419
 420
 421 static int nl_get_multicast_id(struct nl80211_global *global,
 422                                const char *family, const char *group)
 423 {
 424         struct nl_msg *msg;
 425         int ret;
 426         struct family_data res = { group, -ENOENT };
 427
 428         msg = nlmsg_alloc();
 429         if (!msg)
 430                 return -ENOMEM;
 431         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 432                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 433             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 434                 nlmsg_free(msg);
 435                 return -1;
 436         }
 437
 438         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 439         if (ret == 0)
 440                 ret = res.id;
 441         return ret;
 442 }
 443
 444
 445 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 446                    struct nl_msg *msg, int flags, uint8_t cmd)
 447 {
 448         if (TEST_FAIL())
 449                 return NULL;
 450         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 451                            0, flags, cmd, 0);
 452 }
 453
 454
 455 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 456 {
 457         if (bss->wdev_id_set)
 458                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 459         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 460 }
 461
 462
 463 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 464 {
 465         struct nl_msg *msg;
 466
 467         msg = nlmsg_alloc();
 468         if (!msg)
 469                 return NULL;
 470
 471         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 472             nl80211_set_iface_id(msg, bss) < 0) {
 473                 nlmsg_free(msg);
 474                 return NULL;
 475         }
 476
 477         return msg;
 478 }
 479
 480
 481 static struct nl_msg *
 482 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 483                     int flags, uint8_t cmd)
 484 {
 485         struct nl_msg *msg;
 486
 487         msg = nlmsg_alloc();
 488         if (!msg)
 489                 return NULL;
 490
 491         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 492             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 493                 nlmsg_free(msg);
 494                 return NULL;
 495         }
 496
 497         return msg;
 498 }
 499
 500
 501 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 502                                 uint8_t cmd)
 503 {
 504         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 505 }
 506
 507
 508 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 509 {
 510         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 511 }
 512
 513
 514 struct wiphy_idx_data {
 515         int wiphy_idx;
 516         enum nl80211_iftype nlmode;
 517         u8 *macaddr;
 518 };
 519
 520
 521 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 522 {
 523         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 524         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 525         struct wiphy_idx_data *info = arg;
 526
 527         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 528                   genlmsg_attrlen(gnlh, 0), NULL);
 529
 530         if (tb[NL80211_ATTR_WIPHY])
 531                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 532
 533         if (tb[NL80211_ATTR_IFTYPE])
 534                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 535
 536         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 537                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 538                           ETH_ALEN);
 539
 540         return NL_SKIP;
 541 }
 542
 543
 544 int nl80211_get_wiphy_index(struct i802_bss *bss)
 545 {
 546         struct nl_msg *msg;
 547         struct wiphy_idx_data data = {
 548                 .wiphy_idx = -1,
 549                 .macaddr = NULL,
 550         };
 551
 552         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 553                 return -1;
 554
 555         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 556                 return data.wiphy_idx;
 557         return -1;
 558 }
 559
 560
 561 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 562 {
 563         struct nl_msg *msg;
 564         struct wiphy_idx_data data = {
 565                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 566                 .macaddr = NULL,
 567         };
 568
 569         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 570                 return NL80211_IFTYPE_UNSPECIFIED;
 571
 572         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 573                 return data.nlmode;
 574         return NL80211_IFTYPE_UNSPECIFIED;
 575 }
 576
 577
 578 static int nl80211_get_macaddr(struct i802_bss *bss)
 579 {
 580         struct nl_msg *msg;
 581         struct wiphy_idx_data data = {
 582                 .macaddr = bss->addr,
 583         };
 584
 585         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 586                 return -1;
 587
 588         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 589 }
 590
 591
 592 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 593                                     struct nl80211_wiphy_data *w)
 594 {
 595         struct nl_msg *msg;
 596         int ret;
 597
 598         msg = nlmsg_alloc();
 599         if (!msg)
 600                 return -1;
 601
 602         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 603             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 604                 nlmsg_free(msg);
 605                 return -1;
 606         }
 607
 608         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 609         if (ret) {
 610                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 611                            "failed: ret=%d (%s)",
 612                            ret, strerror(-ret));
 613         }
 614         return ret;
 615 }
 616
 617
 618 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 619 {
 620         struct nl80211_wiphy_data *w = eloop_ctx;
 621         int res;
 622
 623         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 624
 625         res = nl_recvmsgs(handle, w->nl_cb);
 626         if (res < 0) {
 627                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 628                            __func__, res);
 629         }
 630 }
 631
 632
 633 static int process_beacon_event(struct nl_msg *msg, void *arg)
 634 {
 635         struct nl80211_wiphy_data *w = arg;
 636         struct wpa_driver_nl80211_data *drv;
 637         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 638         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 639         union wpa_event_data event;
 640
 641         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 642                   genlmsg_attrlen(gnlh, 0), NULL);
 643
 644         if (gnlh->cmd != NL80211_CMD_FRAME) {
 645                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 646                            gnlh->cmd);
 647                 return NL_SKIP;
 648         }
 649
 650         if (!tb[NL80211_ATTR_FRAME])
 651                 return NL_SKIP;
 652
 653         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 654                          wiphy_list) {
 655                 os_memset(&event, 0, sizeof(event));
 656                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 657                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 658                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 659         }
 660
 661         return NL_SKIP;
 662 }
 663
 664
 665 static struct nl80211_wiphy_data *
 666 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 667 {
 668         static DEFINE_DL_LIST(nl80211_wiphys);
 669         struct nl80211_wiphy_data *w;
 670         int wiphy_idx, found = 0;
 671         struct i802_bss *tmp_bss;
 672
 673         if (bss->wiphy_data != NULL)
 674                 return bss->wiphy_data;
 675
 676         wiphy_idx = nl80211_get_wiphy_index(bss);
 677
 678         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 679                 if (w->wiphy_idx == wiphy_idx)
 680                         goto add;
 681         }
 682
 683         /* alloc new one */
 684         w = os_zalloc(sizeof(*w));
 685         if (w == NULL)
 686                 return NULL;
 687         w->wiphy_idx = wiphy_idx;
 688         dl_list_init(&w->bsss);
 689         dl_list_init(&w->drvs);
 690
 691         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 692         if (!w->nl_cb) {
 693                 os_free(w);
 694                 return NULL;
 695         }
 696         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 697         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 698                   w);
 699
 700         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 701                                          "wiphy beacons");
 702         if (w->nl_beacons == NULL) {
 703                 os_free(w);
 704                 return NULL;
 705         }
 706
 707         if (nl80211_register_beacons(bss->drv, w)) {
 708                 nl_destroy_handles(&w->nl_beacons);
 709                 os_free(w);
 710                 return NULL;
 711         }
 712
 713         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 714
 715         dl_list_add(&nl80211_wiphys, &w->list);
 716
 717 add:
 718         /* drv entry for this bss already there? */
 719         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 720                 if (tmp_bss->drv == bss->drv) {
 721                         found = 1;
 722                         break;
 723                 }
 724         }
 725         /* if not add it */
 726         if (!found)
 727                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 728
 729         dl_list_add(&w->bsss, &bss->wiphy_list);
 730         bss->wiphy_data = w;
 731         return w;
 732 }
 733
 734
 735 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 736 {
 737         struct nl80211_wiphy_data *w = bss->wiphy_data;
 738         struct i802_bss *tmp_bss;
 739         int found = 0;
 740
 741         if (w == NULL)
 742                 return;
 743         bss->wiphy_data = NULL;
 744         dl_list_del(&bss->wiphy_list);
 745
 746         /* still any for this drv present? */
 747         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 748                 if (tmp_bss->drv == bss->drv) {
 749                         found = 1;
 750                         break;
 751                 }
 752         }
 753         /* if not remove it */
 754         if (!found)
 755                 dl_list_del(&bss->drv->wiphy_list);
 756
 757         if (!dl_list_empty(&w->bsss))
 758                 return;
 759
 760         nl80211_destroy_eloop_handle(&w->nl_beacons);
 761
 762         nl_cb_put(w->nl_cb);
 763         dl_list_del(&w->list);
 764         os_free(w);
 765 }
 766
 767
 768 static unsigned int nl80211_get_ifindex(void *priv)
 769 {
 770         struct i802_bss *bss = priv;
 771         struct wpa_driver_nl80211_data *drv = bss->drv;
 772
 773         return drv->ifindex;
 774 }
 775
 776
 777 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 778 {
 779         struct i802_bss *bss = priv;
 780         struct wpa_driver_nl80211_data *drv = bss->drv;
 781         if (!drv->associated)
 782                 return -1;
 783         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 784         return 0;
 785 }
 786
 787
 788 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 789 {
 790         struct i802_bss *bss = priv;
 791         struct wpa_driver_nl80211_data *drv = bss->drv;
 792         if (!drv->associated)
 793                 return -1;
 794         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 795         return drv->ssid_len;
 796 }
 797
 798
 799 static void wpa_driver_nl80211_event_newlink(
 800         struct nl80211_global *global, struct wpa_driver_nl80211_data *drv,
 801         int ifindex, const char *ifname)
 802 {
 803         union wpa_event_data event;
 804
 805         if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 806                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 807                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 808                                    drv->first_bss->ifname);
 809                         return;
 810                 }
 811                 if (!drv->if_removed)
 812                         return;
 813                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 814                            drv->first_bss->ifname);
 815                 drv->if_removed = 0;
 816         }
 817
 818         os_memset(&event, 0, sizeof(event));
 819         event.interface_status.ifindex = ifindex;
 820         os_strlcpy(event.interface_status.ifname, ifname,
 821                    sizeof(event.interface_status.ifname));
 822         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 823         if (drv)
 824                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 825         else
 826                 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS,
 827                                             &event);
 828 }
 829
 830
 831 static void wpa_driver_nl80211_event_dellink(
 832         struct nl80211_global *global, struct wpa_driver_nl80211_data *drv,
 833         int ifindex, const char *ifname)
 834 {
 835         union wpa_event_data event;
 836
 837         if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 838                 if (drv->if_removed) {
 839                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 840                                    ifname);
 841                         return;
 842                 }
 843                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 844                            ifname);
 845                 drv->if_removed = 1;
 846         } else {
 847                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 848                            ifname);
 849         }
 850
 851         os_memset(&event, 0, sizeof(event));
 852         event.interface_status.ifindex = ifindex;
 853         os_strlcpy(event.interface_status.ifname, ifname,
 854                    sizeof(event.interface_status.ifname));
 855         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 856         if (drv)
 857                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 858         else
 859                 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS,
 860                                             &event);
 861 }
 862
 863
 864 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 865                                          u8 *buf, size_t len)
 866 {
 867         int attrlen, rta_len;
 868         struct rtattr *attr;
 869
 870         attrlen = len;
 871         attr = (struct rtattr *) buf;
 872
 873         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 874         while (RTA_OK(attr, attrlen)) {
 875                 if (attr->rta_type == IFLA_IFNAME) {
 876                         if (os_strcmp(((char *) attr) + rta_len,
 877                                       drv->first_bss->ifname) == 0)
 878                                 return 1;
 879                         else
 880                                 break;
 881                 }
 882                 attr = RTA_NEXT(attr, attrlen);
 883         }
 884
 885         return 0;
 886 }
 887
 888
 889 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 890                                           int ifindex, u8 *buf, size_t len)
 891 {
 892         if (drv->ifindex == ifindex)
 893                 return 1;
 894
 895         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 896                 nl80211_check_global(drv->global);
 897                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 898                            "interface");
 899                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 900                 return 1;
 901         }
 902
 903         return 0;
 904 }
 905
 906
 907 static struct wpa_driver_nl80211_data *
 908 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 909 {
 910         struct wpa_driver_nl80211_data *drv;
 911         dl_list_for_each(drv, &global->interfaces,
 912                          struct wpa_driver_nl80211_data, list) {
 913                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 914                     have_ifidx(drv, idx, IFIDX_ANY))
 915                         return drv;
 916         }
 917         return NULL;
 918 }
 919
 920
 921 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 922                                                  struct ifinfomsg *ifi,
 923                                                  u8 *buf, size_t len)
 924 {
 925         struct nl80211_global *global = ctx;
 926         struct wpa_driver_nl80211_data *drv;
 927         int attrlen;
 928         struct rtattr *attr;
 929         u32 brid = 0;
 930         char namebuf[IFNAMSIZ];
 931         char ifname[IFNAMSIZ + 1];
 932         char extra[100], *pos, *end;
 933
 934         extra[0] = '\0';
 935         pos = extra;
 936         end = pos + sizeof(extra);
 937         ifname[0] = '\0';
 938
 939         attrlen = len;
 940         attr = (struct rtattr *) buf;
 941         while (RTA_OK(attr, attrlen)) {
 942                 switch (attr->rta_type) {
 943                 case IFLA_IFNAME:
 944                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 945                                 break;
 946                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 947                         ifname[RTA_PAYLOAD(attr)] = '\0';
 948                         break;
 949                 case IFLA_MASTER:
 950                         brid = nla_get_u32((struct nlattr *) attr);
 951                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 952                         break;
 953                 case IFLA_WIRELESS:
 954                         pos += os_snprintf(pos, end - pos, " wext");
 955                         break;
 956                 case IFLA_OPERSTATE:
 957                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 958                                            nla_get_u32((struct nlattr *) attr));
 959                         break;
 960                 case IFLA_LINKMODE:
 961                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 962                                            nla_get_u32((struct nlattr *) attr));
 963                         break;
 964                 }
 965                 attr = RTA_NEXT(attr, attrlen);
 966         }
 967         extra[sizeof(extra) - 1] = '\0';
 968
 969         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 970                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 971                    ifi->ifi_flags,
 972                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 973                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 974                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 975                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 976
 977         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 978         if (!drv)
 979                 goto event_newlink;
 980
 981         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 982                 namebuf[0] = '\0';
 983                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 984                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) {
 985                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 986                                    "event since interface %s is up", namebuf);
 987                         drv->ignore_if_down_event = 0;
 988                         return;
 989                 }
 990                 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)",
 991                            namebuf, ifname);
 992                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 993                         wpa_printf(MSG_DEBUG,
 994                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 995                                    drv->first_bss->ifname);
 996                 } else if (drv->ignore_if_down_event) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 998                                    "event generated by mode change");
 999                         drv->ignore_if_down_event = 0;
1000                 } else {
1001                         drv->if_disabled = 1;
1002                         wpa_supplicant_event(drv->ctx,
1003                                              EVENT_INTERFACE_DISABLED, NULL);
1004
1005                         /*
1006                          * Try to get drv again, since it may be removed as
1007                          * part of the EVENT_INTERFACE_DISABLED handling for
1008                          * dynamic interfaces
1009                          */
1010                         drv = nl80211_find_drv(global, ifi->ifi_index,
1011                                                buf, len);
1012                         if (!drv)
1013                                 return;
1014                 }
1015         }
1016
1017         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
1018                 if (if_indextoname(ifi->ifi_index, namebuf) &&
1019                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
1020                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1021                                    "event since interface %s is down",
1022                                    namebuf);
1023                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
1024                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1025                                    "event since interface %s does not exist",
1026                                    drv->first_bss->ifname);
1027                 } else if (drv->if_removed) {
1028                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1029                                    "event since interface %s is marked "
1030                                    "removed", drv->first_bss->ifname);
1031                 } else {
1032                         struct i802_bss *bss;
1033                         u8 addr[ETH_ALEN];
1034
1035                         /* Re-read MAC address as it may have changed */
1036                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1037                         if (bss &&
1038                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1039                                                bss->ifname, addr) < 0) {
1040                                 wpa_printf(MSG_DEBUG,
1041                                            "nl80211: %s: failed to re-read MAC address",
1042                                            bss->ifname);
1043                         } else if (bss &&
1044                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1045                                 wpa_printf(MSG_DEBUG,
1046                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1047                                            MACSTR " to " MACSTR,
1048                                            ifi->ifi_index, bss->ifname,
1049                                            MAC2STR(bss->addr),
1050                                            MAC2STR(addr));
1051                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1052                         }
1053
1054                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1055                         drv->if_disabled = 0;
1056                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1057                                              NULL);
1058                 }
1059         }
1060
1061         /*
1062          * Some drivers send the association event before the operup event--in
1063          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1064          * fails. This will hit us when wpa_supplicant does not need to do
1065          * IEEE 802.1X authentication
1066          */
1067         if (drv->operstate == 1 &&
1068             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1069             !(ifi->ifi_flags & IFF_RUNNING)) {
1070                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1071                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1072                                        -1, IF_OPER_UP);
1073         }
1074
1075 event_newlink:
1076         if (ifname[0])
1077                 wpa_driver_nl80211_event_newlink(global, drv, ifi->ifi_index,
1078                                                  ifname);
1079
1080         if (ifi->ifi_family == AF_BRIDGE && brid && drv) {
1081                 struct i802_bss *bss;
1082
1083                 /* device has been added to bridge */
1084                 if (!if_indextoname(brid, namebuf)) {
1085                         wpa_printf(MSG_DEBUG,
1086                                    "nl80211: Could not find bridge ifname for ifindex %u",
1087                                    brid);
1088                         return;
1089                 }
1090                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1091                            brid, namebuf);
1092                 add_ifidx(drv, brid, ifi->ifi_index);
1093
1094                 for (bss = drv->first_bss; bss; bss = bss->next) {
1095                         if (os_strcmp(ifname, bss->ifname) == 0) {
1096                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1097                                 break;
1098                         }
1099                 }
1100         }
1101 }
1102
1103
1104 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1105                                                  struct ifinfomsg *ifi,
1106                                                  u8 *buf, size_t len)
1107 {
1108         struct nl80211_global *global = ctx;
1109         struct wpa_driver_nl80211_data *drv;
1110         int attrlen;
1111         struct rtattr *attr;
1112         u32 brid = 0;
1113         char ifname[IFNAMSIZ + 1];
1114         char extra[100], *pos, *end;
1115
1116         extra[0] = '\0';
1117         pos = extra;
1118         end = pos + sizeof(extra);
1119         ifname[0] = '\0';
1120
1121         attrlen = len;
1122         attr = (struct rtattr *) buf;
1123         while (RTA_OK(attr, attrlen)) {
1124                 switch (attr->rta_type) {
1125                 case IFLA_IFNAME:
1126                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1127                                 break;
1128                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1129                         ifname[RTA_PAYLOAD(attr)] = '\0';
1130                         break;
1131                 case IFLA_MASTER:
1132                         brid = nla_get_u32((struct nlattr *) attr);
1133                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1134                         break;
1135                 case IFLA_OPERSTATE:
1136                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1137                                            nla_get_u32((struct nlattr *) attr));
1138                         break;
1139                 case IFLA_LINKMODE:
1140                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1141                                            nla_get_u32((struct nlattr *) attr));
1142                         break;
1143                 }
1144                 attr = RTA_NEXT(attr, attrlen);
1145         }
1146         extra[sizeof(extra) - 1] = '\0';
1147
1148         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1149                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1150                    ifi->ifi_flags,
1151                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1152                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1153                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1154                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1155
1156         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1157
1158         if (ifi->ifi_family == AF_BRIDGE && brid && drv) {
1159                 /* device has been removed from bridge */
1160                 char namebuf[IFNAMSIZ];
1161
1162                 if (!if_indextoname(brid, namebuf)) {
1163                         wpa_printf(MSG_DEBUG,
1164                                    "nl80211: Could not find bridge ifname for ifindex %u",
1165                                    brid);
1166                 } else {
1167                         wpa_printf(MSG_DEBUG,
1168                                    "nl80211: Remove ifindex %u for bridge %s",
1169                                    brid, namebuf);
1170                 }
1171                 del_ifidx(drv, brid, ifi->ifi_index);
1172         }
1173
1174         if (ifi->ifi_family != AF_BRIDGE || !brid)
1175                 wpa_driver_nl80211_event_dellink(global, drv, ifi->ifi_index,
1176                                                  ifname);
1177 }
1178
1179
1180 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1181 {
1182         struct nl_msg *msg;
1183         int ret;
1184         struct nl80211_bss_info_arg arg;
1185
1186         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1187         os_memset(&arg, 0, sizeof(arg));
1188         arg.drv = drv;
1189         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1190         if (ret == 0) {
1191                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1192                         arg.ibss_freq : arg.assoc_freq;
1193                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1194                            "associated BSS from scan results: %u MHz", freq);
1195                 if (freq)
1196                         drv->assoc_freq = freq;
1197                 return drv->assoc_freq;
1198         }
1199         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1200                    "(%s)", ret, strerror(-ret));
1201         return drv->assoc_freq;
1202 }
1203
1204
1205 static int get_link_signal(struct nl_msg *msg, void *arg)
1206 {
1207         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1208         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1209         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1210         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1211                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1212                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1213                 [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = { .type = NLA_U8 },
1214         };
1215         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1216         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1217                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1218                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1219                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1220                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1221         };
1222         struct wpa_signal_info *sig_change = arg;
1223
1224         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1225                   genlmsg_attrlen(gnlh, 0), NULL);
1226         if (!tb[NL80211_ATTR_STA_INFO] ||
1227             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1228                              tb[NL80211_ATTR_STA_INFO], policy))
1229                 return NL_SKIP;
1230         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1231                 return NL_SKIP;
1232
1233         sig_change->current_signal =
1234                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1235
1236         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1237                 sig_change->avg_signal =
1238                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1239         else
1240                 sig_change->avg_signal = 0;
1241
1242         if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG])
1243                 sig_change->avg_beacon_signal =
1244                         (s8)
1245                         nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]);
1246         else
1247                 sig_change->avg_beacon_signal = 0;
1248
1249         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1250                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1251                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1252                                      rate_policy)) {
1253                         sig_change->current_txrate = 0;
1254                 } else {
1255                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1256                                 sig_change->current_txrate =
1257                                         nla_get_u16(rinfo[
1258                                              NL80211_RATE_INFO_BITRATE]) * 100;
1259                         }
1260                 }
1261         }
1262
1263         return NL_SKIP;
1264 }
1265
1266
1267 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1268                             struct wpa_signal_info *sig)
1269 {
1270         struct nl_msg *msg;
1271
1272         sig->current_signal = -9999;
1273         sig->current_txrate = 0;
1274
1275         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1277                 nlmsg_free(msg);
1278                 return -ENOBUFS;
1279         }
1280
1281         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1282 }
1283
1284
1285 static int get_link_noise(struct nl_msg *msg, void *arg)
1286 {
1287         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1288         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1289         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1290         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1291                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1292                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1293         };
1294         struct wpa_signal_info *sig_change = arg;
1295
1296         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1297                   genlmsg_attrlen(gnlh, 0), NULL);
1298
1299         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1300                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1301                 return NL_SKIP;
1302         }
1303
1304         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1305                              tb[NL80211_ATTR_SURVEY_INFO],
1306                              survey_policy)) {
1307                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1308                            "attributes!");
1309                 return NL_SKIP;
1310         }
1311
1312         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1313                 return NL_SKIP;
1314
1315         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1316             sig_change->frequency)
1317                 return NL_SKIP;
1318
1319         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1320                 return NL_SKIP;
1321
1322         sig_change->current_noise =
1323                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1324
1325         return NL_SKIP;
1326 }
1327
1328
1329 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1330                            struct wpa_signal_info *sig_change)
1331 {
1332         struct nl_msg *msg;
1333
1334         sig_change->current_noise = 9999;
1335         sig_change->frequency = drv->assoc_freq;
1336
1337         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1338         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1339 }
1340
1341
1342 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1343                                              void *handle)
1344 {
1345         struct nl_cb *cb = eloop_ctx;
1346         int res;
1347
1348         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1349
1350         res = nl_recvmsgs(handle, cb);
1351         if (res < 0) {
1352                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1353                            __func__, res);
1354         }
1355 }
1356
1357
1358 /**
1359  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1360  * @priv: driver_nl80211 private data
1361  * @alpha2_arg: country to which to switch to
1362  * Returns: 0 on success, -1 on failure
1363  *
1364  * This asks nl80211 to set the regulatory domain for given
1365  * country ISO / IEC alpha2.
1366  */
1367 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1368 {
1369         struct i802_bss *bss = priv;
1370         struct wpa_driver_nl80211_data *drv = bss->drv;
1371         char alpha2[3];
1372         struct nl_msg *msg;
1373
1374         msg = nlmsg_alloc();
1375         if (!msg)
1376                 return -ENOMEM;
1377
1378         alpha2[0] = alpha2_arg[0];
1379         alpha2[1] = alpha2_arg[1];
1380         alpha2[2] = '\0';
1381
1382         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1383             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1384                 nlmsg_free(msg);
1385                 return -EINVAL;
1386         }
1387         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1388                 return -EINVAL;
1389         return 0;
1390 }
1391
1392
1393 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1394 {
1395         char *alpha2 = arg;
1396         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1397         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1398
1399         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1400                   genlmsg_attrlen(gnlh, 0), NULL);
1401         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1402                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1403                 return NL_SKIP;
1404         }
1405         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1406         return NL_SKIP;
1407 }
1408
1409
1410 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1411 {
1412         struct i802_bss *bss = priv;
1413         struct wpa_driver_nl80211_data *drv = bss->drv;
1414         struct nl_msg *msg;
1415         int ret;
1416
1417         msg = nlmsg_alloc();
1418         if (!msg)
1419                 return -ENOMEM;
1420
1421         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1422         alpha2[0] = '\0';
1423         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1424         if (!alpha2[0])
1425                 ret = -1;
1426
1427         return ret;
1428 }
1429
1430
1431 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1432 {
1433         int ret;
1434
1435         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1436         if (global->nl_cb == NULL) {
1437                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1438                            "callbacks");
1439                 return -1;
1440         }
1441
1442         global->nl = nl_create_handle(global->nl_cb, "nl");
1443         if (global->nl == NULL)
1444                 goto err;
1445
1446         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1447         if (global->nl80211_id < 0) {
1448                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1449                            "found");
1450                 goto err;
1451         }
1452
1453         global->nl_event = nl_create_handle(global->nl_cb, "event");
1454         if (global->nl_event == NULL)
1455                 goto err;
1456
1457         ret = nl_get_multicast_id(global, "nl80211", "scan");
1458         if (ret >= 0)
1459                 ret = nl_socket_add_membership(global->nl_event, ret);
1460         if (ret < 0) {
1461                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1462                            "membership for scan events: %d (%s)",
1463                            ret, strerror(-ret));
1464                 goto err;
1465         }
1466
1467         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1468         if (ret >= 0)
1469                 ret = nl_socket_add_membership(global->nl_event, ret);
1470         if (ret < 0) {
1471                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1472                            "membership for mlme events: %d (%s)",
1473                            ret, strerror(-ret));
1474                 goto err;
1475         }
1476
1477         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1478         if (ret >= 0)
1479                 ret = nl_socket_add_membership(global->nl_event, ret);
1480         if (ret < 0) {
1481                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1482                            "membership for regulatory events: %d (%s)",
1483                            ret, strerror(-ret));
1484                 /* Continue without regulatory events */
1485         }
1486
1487         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1488         if (ret >= 0)
1489                 ret = nl_socket_add_membership(global->nl_event, ret);
1490         if (ret < 0) {
1491                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1492                            "membership for vendor events: %d (%s)",
1493                            ret, strerror(-ret));
1494                 /* Continue without vendor events */
1495         }
1496
1497         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1498                   no_seq_check, NULL);
1499         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1500                   process_global_event, global);
1501
1502         nl80211_register_eloop_read(&global->nl_event,
1503                                     wpa_driver_nl80211_event_receive,
1504                                     global->nl_cb);
1505
1506         return 0;
1507
1508 err:
1509         nl_destroy_handles(&global->nl_event);
1510         nl_destroy_handles(&global->nl);
1511         nl_cb_put(global->nl_cb);
1512         global->nl_cb = NULL;
1513         return -1;
1514 }
1515
1516
1517 static void nl80211_check_global(struct nl80211_global *global)
1518 {
1519         struct nl_handle *handle;
1520         const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL };
1521         int ret;
1522         unsigned int i;
1523
1524         /*
1525          * Try to re-add memberships to handle case of cfg80211 getting reloaded
1526          * and all registration having been cleared.
1527          */
1528         handle = (void *) (((intptr_t) global->nl_event) ^
1529                            ELOOP_SOCKET_INVALID);
1530
1531         for (i = 0; groups[i]; i++) {
1532                 ret = nl_get_multicast_id(global, "nl80211", groups[i]);
1533                 if (ret >= 0)
1534                         ret = nl_socket_add_membership(handle, ret);
1535                 if (ret < 0) {
1536                         wpa_printf(MSG_INFO,
1537                                    "nl80211: Could not re-add multicast membership for %s events: %d (%s)",
1538                                    groups[i], ret, strerror(-ret));
1539                 }
1540         }
1541 }
1542
1543
1544 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1545 {
1546         struct wpa_driver_nl80211_data *drv = ctx;
1547
1548         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1549
1550         /*
1551          * rtnetlink ifdown handler will report interfaces other than the P2P
1552          * Device interface as disabled.
1553          */
1554         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1555                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
1556 }
1557
1558
1559 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1560 {
1561         struct wpa_driver_nl80211_data *drv = ctx;
1562         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1563         if (i802_set_iface_flags(drv->first_bss, 1)) {
1564                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1565                            "after rfkill unblock");
1566                 return;
1567         }
1568
1569         if (is_p2p_net_interface(drv->nlmode))
1570                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
1571
1572         /*
1573          * rtnetlink ifup handler will report interfaces other than the P2P
1574          * Device interface as enabled.
1575          */
1576         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1577                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
1578 }
1579
1580
1581 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1582                                                       void *eloop_ctx,
1583                                                       void *handle)
1584 {
1585         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1586         u8 data[2048];
1587         struct msghdr msg;
1588         struct iovec entry;
1589         u8 control[512];
1590         struct cmsghdr *cmsg;
1591         int res, found_ee = 0, found_wifi = 0, acked = 0;
1592         union wpa_event_data event;
1593
1594         memset(&msg, 0, sizeof(msg));
1595         msg.msg_iov = &entry;
1596         msg.msg_iovlen = 1;
1597         entry.iov_base = data;
1598         entry.iov_len = sizeof(data);
1599         msg.msg_control = &control;
1600         msg.msg_controllen = sizeof(control);
1601
1602         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1603         /* if error or not fitting 802.3 header, return */
1604         if (res < 14)
1605                 return;
1606
1607         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1608         {
1609                 if (cmsg->cmsg_level == SOL_SOCKET &&
1610                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1611                         int *ack;
1612
1613                         found_wifi = 1;
1614                         ack = (void *)CMSG_DATA(cmsg);
1615                         acked = *ack;
1616                 }
1617
1618                 if (cmsg->cmsg_level == SOL_PACKET &&
1619                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1620                         struct sock_extended_err *err =
1621                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1622
1623                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1624                                 found_ee = 1;
1625                 }
1626         }
1627
1628         if (!found_ee || !found_wifi)
1629                 return;
1630
1631         memset(&event, 0, sizeof(event));
1632         event.eapol_tx_status.dst = data;
1633         event.eapol_tx_status.data = data + 14;
1634         event.eapol_tx_status.data_len = res - 14;
1635         event.eapol_tx_status.ack = acked;
1636         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1637 }
1638
1639
1640 static int nl80211_init_bss(struct i802_bss *bss)
1641 {
1642         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1643         if (!bss->nl_cb)
1644                 return -1;
1645
1646         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1647                   no_seq_check, NULL);
1648         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1649                   process_bss_event, bss);
1650
1651         return 0;
1652 }
1653
1654
1655 static void nl80211_destroy_bss(struct i802_bss *bss)
1656 {
1657         nl_cb_put(bss->nl_cb);
1658         bss->nl_cb = NULL;
1659 }
1660
1661
1662 static void
1663 wpa_driver_nl80211_drv_init_rfkill(struct wpa_driver_nl80211_data *drv)
1664 {
1665         struct rfkill_config *rcfg;
1666
1667         if (drv->rfkill)
1668                 return;
1669
1670         rcfg = os_zalloc(sizeof(*rcfg));
1671         if (!rcfg)
1672                 return;
1673
1674         rcfg->ctx = drv;
1675
1676         /* rfkill uses netdev sysfs for initialization. However, P2P Device is
1677          * not associated with a netdev, so use the name of some other interface
1678          * sharing the same wiphy as the P2P Device interface.
1679          *
1680          * Note: This is valid, as a P2P Device interface is always dynamically
1681          * created and is created only once another wpa_s interface was added.
1682          */
1683         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) {
1684                 struct nl80211_global *global = drv->global;
1685                 struct wpa_driver_nl80211_data *tmp1;
1686
1687                 dl_list_for_each(tmp1, &global->interfaces,
1688                                  struct wpa_driver_nl80211_data, list) {
1689                         if (drv == tmp1 || drv->wiphy_idx != tmp1->wiphy_idx ||
1690                             !tmp1->rfkill)
1691                                 continue;
1692
1693                         wpa_printf(MSG_DEBUG,
1694                                    "nl80211: Use (%s) to initialize P2P Device rfkill",
1695                                    tmp1->first_bss->ifname);
1696                         os_strlcpy(rcfg->ifname, tmp1->first_bss->ifname,
1697                                    sizeof(rcfg->ifname));
1698                         break;
1699                 }
1700         } else {
1701                 os_strlcpy(rcfg->ifname, drv->first_bss->ifname,
1702                            sizeof(rcfg->ifname));
1703         }
1704
1705         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1706         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1707         drv->rfkill = rfkill_init(rcfg);
1708         if (!drv->rfkill) {
1709                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1710                 os_free(rcfg);
1711         }
1712 }
1713
1714
1715 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1716                                           void *global_priv, int hostapd,
1717                                           const u8 *set_addr,
1718                                           const char *driver_params)
1719 {
1720         struct wpa_driver_nl80211_data *drv;
1721         struct i802_bss *bss;
1722
1723         if (global_priv == NULL)
1724                 return NULL;
1725         drv = os_zalloc(sizeof(*drv));
1726         if (drv == NULL)
1727                 return NULL;
1728         drv->global = global_priv;
1729         drv->ctx = ctx;
1730         drv->hostapd = !!hostapd;
1731         drv->eapol_sock = -1;
1732
1733         /*
1734          * There is no driver capability flag for this, so assume it is
1735          * supported and disable this on first attempt to use if the driver
1736          * rejects the command due to missing support.
1737          */
1738         drv->set_rekey_offload = 1;
1739
1740         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1741         drv->if_indices = drv->default_if_indices;
1742         drv->if_indices_reason = drv->default_if_indices_reason;
1743
1744         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1745         if (!drv->first_bss) {
1746                 os_free(drv);
1747                 return NULL;
1748         }
1749         bss = drv->first_bss;
1750         bss->drv = drv;
1751         bss->ctx = ctx;
1752
1753         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1754         drv->monitor_ifidx = -1;
1755         drv->monitor_sock = -1;
1756         drv->eapol_tx_sock = -1;
1757         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1758
1759         if (nl80211_init_bss(bss))
1760                 goto failed;
1761
1762         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1763                 goto failed;
1764
1765         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1766         if (drv->eapol_tx_sock < 0)
1767                 goto failed;
1768
1769         if (drv->data_tx_status) {
1770                 int enabled = 1;
1771
1772                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1773                                &enabled, sizeof(enabled)) < 0) {
1774                         wpa_printf(MSG_DEBUG,
1775                                 "nl80211: wifi status sockopt failed\n");
1776                         drv->data_tx_status = 0;
1777                         if (!drv->use_monitor)
1778                                 drv->capa.flags &=
1779                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1780                 } else {
1781                         eloop_register_read_sock(drv->eapol_tx_sock,
1782                                 wpa_driver_nl80211_handle_eapol_tx_status,
1783                                 drv, NULL);
1784                 }
1785         }
1786
1787         if (drv->global) {
1788                 nl80211_check_global(drv->global);
1789                 dl_list_add(&drv->global->interfaces, &drv->list);
1790                 drv->in_interface_list = 1;
1791         }
1792
1793         return bss;
1794
1795 failed:
1796         wpa_driver_nl80211_deinit(bss);
1797         return NULL;
1798 }
1799
1800
1801 /**
1802  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1803  * @ctx: context to be used when calling wpa_supplicant functions,
1804  * e.g., wpa_supplicant_event()
1805  * @ifname: interface name, e.g., wlan0
1806  * @global_priv: private driver global data from global_init()
1807  * Returns: Pointer to private data, %NULL on failure
1808  */
1809 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1810                                       void *global_priv)
1811 {
1812         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1813                                            NULL);
1814 }
1815
1816
1817 static int nl80211_register_frame(struct i802_bss *bss,
1818                                   struct nl_handle *nl_handle,
1819                                   u16 type, const u8 *match, size_t match_len)
1820 {
1821         struct wpa_driver_nl80211_data *drv = bss->drv;
1822         struct nl_msg *msg;
1823         int ret;
1824         char buf[30];
1825
1826         buf[0] = '\0';
1827         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1828         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1829                    type, fc2str(type), nl_handle, buf);
1830
1831         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1832             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1833             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1834                 nlmsg_free(msg);
1835                 return -1;
1836         }
1837
1838         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1839         if (ret) {
1840                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1841                            "failed (type=%u): ret=%d (%s)",
1842                            type, ret, strerror(-ret));
1843                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1844                             match, match_len);
1845         }
1846         return ret;
1847 }
1848
1849
1850 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1851 {
1852         if (bss->nl_mgmt) {
1853                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1854                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1855                 return -1;
1856         }
1857
1858         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1859         if (bss->nl_mgmt == NULL)
1860                 return -1;
1861
1862         return 0;
1863 }
1864
1865
1866 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1867 {
1868         nl80211_register_eloop_read(&bss->nl_mgmt,
1869                                     wpa_driver_nl80211_event_receive,
1870                                     bss->nl_cb);
1871 }
1872
1873
1874 static int nl80211_register_action_frame(struct i802_bss *bss,
1875                                          const u8 *match, size_t match_len)
1876 {
1877         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1878         return nl80211_register_frame(bss, bss->nl_mgmt,
1879                                       type, match, match_len);
1880 }
1881
1882
1883 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1884 {
1885         struct wpa_driver_nl80211_data *drv = bss->drv;
1886         int ret = 0;
1887
1888         if (nl80211_alloc_mgmt_handle(bss))
1889                 return -1;
1890         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1891                    "handle %p", bss->nl_mgmt);
1892
1893         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1894                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1895
1896                 /* register for any AUTH message */
1897                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1898         }
1899
1900 #ifdef CONFIG_INTERWORKING
1901         /* QoS Map Configure */
1902         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1903                 ret = -1;
1904 #endif /* CONFIG_INTERWORKING */
1905 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1906         /* GAS Initial Request */
1907         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1908                 ret = -1;
1909         /* GAS Initial Response */
1910         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1911                 ret = -1;
1912         /* GAS Comeback Request */
1913         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1914                 ret = -1;
1915         /* GAS Comeback Response */
1916         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1917                 ret = -1;
1918         /* Protected GAS Initial Request */
1919         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1920                 ret = -1;
1921         /* Protected GAS Initial Response */
1922         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1923                 ret = -1;
1924         /* Protected GAS Comeback Request */
1925         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1926                 ret = -1;
1927         /* Protected GAS Comeback Response */
1928         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1929                 ret = -1;
1930 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1931 #ifdef CONFIG_P2P
1932         /* P2P Public Action */
1933         if (nl80211_register_action_frame(bss,
1934                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1935                                           6) < 0)
1936                 ret = -1;
1937         /* P2P Action */
1938         if (nl80211_register_action_frame(bss,
1939                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1940                                           5) < 0)
1941                 ret = -1;
1942 #endif /* CONFIG_P2P */
1943 #ifdef CONFIG_IEEE80211W
1944         /* SA Query Response */
1945         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1946                 ret = -1;
1947 #endif /* CONFIG_IEEE80211W */
1948 #ifdef CONFIG_TDLS
1949         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1950                 /* TDLS Discovery Response */
1951                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1952                     0)
1953                         ret = -1;
1954         }
1955 #endif /* CONFIG_TDLS */
1956 #ifdef CONFIG_FST
1957         /* FST Action frames */
1958         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
1959                 ret = -1;
1960 #endif /* CONFIG_FST */
1961
1962         /* FT Action frames */
1963         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1964                 ret = -1;
1965         else
1966                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1967                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1968
1969         /* WNM - BSS Transition Management Request */
1970         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1971                 ret = -1;
1972         /* WNM-Sleep Mode Response */
1973         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1974                 ret = -1;
1975
1976 #ifdef CONFIG_HS20
1977         /* WNM-Notification */
1978         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1979                 ret = -1;
1980 #endif /* CONFIG_HS20 */
1981
1982         /* WMM-AC ADDTS Response */
1983         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1984                 ret = -1;
1985
1986         /* WMM-AC DELTS */
1987         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1988                 ret = -1;
1989
1990         /* Radio Measurement - Neighbor Report Response */
1991         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1992                 ret = -1;
1993
1994         /* Radio Measurement - Radio Measurement Request */
1995         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x00", 2) < 0)
1996                 ret = -1;
1997
1998         /* Radio Measurement - Link Measurement Request */
1999         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
2000             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
2001                 ret = -1;
2002
2003         nl80211_mgmt_handle_register_eloop(bss);
2004
2005         return ret;
2006 }
2007
2008
2009 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
2010 {
2011         int ret = 0;
2012
2013         if (nl80211_alloc_mgmt_handle(bss))
2014                 return -1;
2015
2016         wpa_printf(MSG_DEBUG,
2017                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
2018                    bss->nl_mgmt);
2019
2020         /* Auth frames for mesh SAE */
2021         if (nl80211_register_frame(bss, bss->nl_mgmt,
2022                                    (WLAN_FC_TYPE_MGMT << 2) |
2023                                    (WLAN_FC_STYPE_AUTH << 4),
2024                                    NULL, 0) < 0)
2025                 ret = -1;
2026
2027         /* Mesh peering open */
2028         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
2029                 ret = -1;
2030         /* Mesh peering confirm */
2031         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
2032                 ret = -1;
2033         /* Mesh peering close */
2034         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
2035                 ret = -1;
2036
2037         nl80211_mgmt_handle_register_eloop(bss);
2038
2039         return ret;
2040 }
2041
2042
2043 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2044 {
2045         struct nl_msg *msg;
2046         int ret;
2047
2048         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
2049         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
2050         if (ret) {
2051                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2052                            "failed: ret=%d (%s)",
2053                            ret, strerror(-ret));
2054         }
2055         return ret;
2056 }
2057
2058
2059 static int nl80211_action_subscribe_ap(struct i802_bss *bss)
2060 {
2061         int ret = 0;
2062
2063         /* Public Action frames */
2064         if (nl80211_register_action_frame(bss, (u8 *) "\x04", 1) < 0)
2065                 ret = -1;
2066         /* RRM Measurement Report */
2067         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x01", 2) < 0)
2068                 ret = -1;
2069         /* RRM Neighbor Report Request */
2070         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x04", 2) < 0)
2071                 ret = -1;
2072         /* FT Action frames */
2073         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
2074                 ret = -1;
2075 #ifdef CONFIG_IEEE80211W
2076         /* SA Query */
2077         if (nl80211_register_action_frame(bss, (u8 *) "\x08", 1) < 0)
2078                 ret = -1;
2079 #endif /* CONFIG_IEEE80211W */
2080         /* Protected Dual of Public Action */
2081         if (nl80211_register_action_frame(bss, (u8 *) "\x09", 1) < 0)
2082                 ret = -1;
2083         /* WNM */
2084         if (nl80211_register_action_frame(bss, (u8 *) "\x0a", 1) < 0)
2085                 ret = -1;
2086         /* WMM */
2087         if (nl80211_register_action_frame(bss, (u8 *) "\x11", 1) < 0)
2088                 ret = -1;
2089 #ifdef CONFIG_FST
2090         /* FST Action frames */
2091         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
2092                 ret = -1;
2093 #endif /* CONFIG_FST */
2094         /* Vendor-specific */
2095         if (nl80211_register_action_frame(bss, (u8 *) "\x7f", 1) < 0)
2096                 ret = -1;
2097
2098         return ret;
2099 }
2100
2101
2102 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2103 {
2104         static const int stypes[] = {
2105                 WLAN_FC_STYPE_AUTH,
2106                 WLAN_FC_STYPE_ASSOC_REQ,
2107                 WLAN_FC_STYPE_REASSOC_REQ,
2108                 WLAN_FC_STYPE_DISASSOC,
2109                 WLAN_FC_STYPE_DEAUTH,
2110                 WLAN_FC_STYPE_PROBE_REQ,
2111 /* Beacon doesn't work as mac80211 doesn't currently allow
2112  * it, but it wouldn't really be the right thing anyway as
2113  * it isn't per interface ... maybe just dump the scan
2114  * results periodically for OLBC?
2115  */
2116                 /* WLAN_FC_STYPE_BEACON, */
2117         };
2118         unsigned int i;
2119
2120         if (nl80211_alloc_mgmt_handle(bss))
2121                 return -1;
2122         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2123                    "handle %p", bss->nl_mgmt);
2124
2125         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2126                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2127                                            (WLAN_FC_TYPE_MGMT << 2) |
2128                                            (stypes[i] << 4),
2129                                            NULL, 0) < 0) {
2130                         goto out_err;
2131                 }
2132         }
2133
2134         if (nl80211_action_subscribe_ap(bss))
2135                 goto out_err;
2136
2137         if (nl80211_register_spurious_class3(bss))
2138                 goto out_err;
2139
2140         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2141                 goto out_err;
2142
2143         nl80211_mgmt_handle_register_eloop(bss);
2144         return 0;
2145
2146 out_err:
2147         nl_destroy_handles(&bss->nl_mgmt);
2148         return -1;
2149 }
2150
2151
2152 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2153 {
2154         if (nl80211_alloc_mgmt_handle(bss))
2155                 return -1;
2156         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2157                    "handle %p (device SME)", bss->nl_mgmt);
2158
2159         if (nl80211_action_subscribe_ap(bss))
2160                 goto out_err;
2161
2162         nl80211_mgmt_handle_register_eloop(bss);
2163         return 0;
2164
2165 out_err:
2166         nl_destroy_handles(&bss->nl_mgmt);
2167         return -1;
2168 }
2169
2170
2171 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2172 {
2173         if (bss->nl_mgmt == NULL)
2174                 return;
2175         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2176                    "(%s)", bss->nl_mgmt, reason);
2177         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2178
2179         nl80211_put_wiphy_data_ap(bss);
2180 }
2181
2182
2183 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2184 {
2185         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2186 }
2187
2188
2189 static void nl80211_del_p2pdev(struct i802_bss *bss)
2190 {
2191         struct nl_msg *msg;
2192         int ret;
2193
2194         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2195         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2196
2197         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2198                    bss->ifname, (long long unsigned int) bss->wdev_id,
2199                    strerror(-ret));
2200 }
2201
2202
2203 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2204 {
2205         struct nl_msg *msg;
2206         int ret;
2207
2208         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2209                               NL80211_CMD_STOP_P2P_DEVICE);
2210         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2211
2212         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2213                    start ? "Start" : "Stop",
2214                    bss->ifname, (long long unsigned int) bss->wdev_id,
2215                    strerror(-ret));
2216         return ret;
2217 }
2218
2219
2220 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2221 {
2222         enum nl80211_iftype nlmode;
2223
2224         nlmode = nl80211_get_ifmode(bss);
2225         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2226                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2227                                              bss->ifname, up);
2228         }
2229
2230         /* P2P Device has start/stop which is equivalent */
2231         return nl80211_set_p2pdev(bss, up);
2232 }
2233
2234
2235 #ifdef CONFIG_TESTING_OPTIONS
2236 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2237 {
2238         /* struct wpa_driver_nl80211_data *drv = arg; */
2239         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2240         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2241
2242
2243         wpa_printf(MSG_DEBUG,
2244                    "nl80211: QCA vendor test command response received");
2245
2246         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2247                   genlmsg_attrlen(gnlh, 0), NULL);
2248         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2249                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2250                 return NL_SKIP;
2251         }
2252
2253         wpa_hexdump(MSG_DEBUG,
2254                     "nl80211: Received QCA vendor test command response",
2255                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2256                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2257
2258         return NL_SKIP;
2259 }
2260 #endif /* CONFIG_TESTING_OPTIONS */
2261
2262
2263 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2264 {
2265 #ifdef CONFIG_TESTING_OPTIONS
2266         struct nl_msg *msg;
2267         struct nlattr *params;
2268         int ret;
2269
2270         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2271             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2272             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2273                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2274             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2275             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2276                 nlmsg_free(msg);
2277                 return;
2278         }
2279         nla_nest_end(msg, params);
2280
2281         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2282         wpa_printf(MSG_DEBUG,
2283                    "nl80211: QCA vendor test command returned %d (%s)",
2284                    ret, strerror(-ret));
2285 #endif /* CONFIG_TESTING_OPTIONS */
2286 }
2287
2288
2289 static int
2290 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2291                                    const u8 *set_addr, int first,
2292                                    const char *driver_params)
2293 {
2294         struct i802_bss *bss = drv->first_bss;
2295         int send_rfkill_event = 0;
2296         enum nl80211_iftype nlmode;
2297
2298         drv->ifindex = if_nametoindex(bss->ifname);
2299         bss->ifindex = drv->ifindex;
2300         bss->wdev_id = drv->global->if_add_wdevid;
2301         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2302
2303         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2304         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2305         drv->global->if_add_wdevid_set = 0;
2306
2307         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2308                 bss->static_ap = 1;
2309
2310         if (first &&
2311             nl80211_get_ifmode(bss) != NL80211_IFTYPE_P2P_DEVICE &&
2312             linux_iface_up(drv->global->ioctl_sock, bss->ifname) > 0)
2313                 drv->start_iface_up = 1;
2314
2315         if (wpa_driver_nl80211_capa(drv))
2316                 return -1;
2317
2318         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2319                 return -1;
2320
2321         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2322                    bss->ifname, drv->phyname);
2323
2324         if (set_addr &&
2325             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2326              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2327                                 set_addr)))
2328                 return -1;
2329
2330         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2331                 drv->start_mode_ap = 1;
2332
2333         if (drv->hostapd || bss->static_ap)
2334                 nlmode = NL80211_IFTYPE_AP;
2335         else if (bss->if_dynamic)
2336                 nlmode = nl80211_get_ifmode(bss);
2337         else
2338                 nlmode = NL80211_IFTYPE_STATION;
2339
2340         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2341                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2342                 return -1;
2343         }
2344
2345         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2346                 nl80211_get_macaddr(bss);
2347
2348         wpa_driver_nl80211_drv_init_rfkill(drv);
2349
2350         if (!rfkill_is_blocked(drv->rfkill)) {
2351                 int ret = i802_set_iface_flags(bss, 1);
2352                 if (ret) {
2353                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2354                                    "interface '%s' UP", bss->ifname);
2355                         return ret;
2356                 }
2357
2358                 if (is_p2p_net_interface(nlmode))
2359                         nl80211_disable_11b_rates(bss->drv,
2360                                                   bss->drv->ifindex, 1);
2361
2362                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2363                         return ret;
2364         } else {
2365                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2366                            "interface '%s' due to rfkill", bss->ifname);
2367                 if (nlmode != NL80211_IFTYPE_P2P_DEVICE)
2368                         drv->if_disabled = 1;
2369
2370                 send_rfkill_event = 1;
2371         }
2372
2373         if (!drv->hostapd && nlmode != NL80211_IFTYPE_P2P_DEVICE)
2374                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2375                                        1, IF_OPER_DORMANT);
2376
2377         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2378                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2379                                        bss->addr))
2380                         return -1;
2381                 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2382         }
2383
2384         if (send_rfkill_event) {
2385                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2386                                        drv, drv->ctx);
2387         }
2388
2389         if (drv->vendor_cmd_test_avail)
2390                 qca_vendor_test(drv);
2391
2392         return 0;
2393 }
2394
2395
2396 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2397 {
2398         struct nl_msg *msg;
2399
2400         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2401                    drv->ifindex);
2402         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2403         return send_and_recv_msgs(drv, msg, NULL, NULL);
2404 }
2405
2406
2407 /**
2408  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2409  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2410  *
2411  * Shut down driver interface and processing of driver events. Free
2412  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2413  */
2414 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2415 {
2416         struct wpa_driver_nl80211_data *drv = bss->drv;
2417         unsigned int i;
2418
2419         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2420                    bss->ifname, drv->disabled_11b_rates);
2421
2422         bss->in_deinit = 1;
2423         if (drv->data_tx_status)
2424                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2425         if (drv->eapol_tx_sock >= 0)
2426                 close(drv->eapol_tx_sock);
2427
2428         if (bss->nl_preq)
2429                 wpa_driver_nl80211_probe_req_report(bss, 0);
2430         if (bss->added_if_into_bridge) {
2431                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2432                                     bss->ifname) < 0)
2433                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2434                                    "interface %s from bridge %s: %s",
2435                                    bss->ifname, bss->brname, strerror(errno));
2436                 if (drv->rtnl_sk)
2437                         nl80211_handle_destroy(drv->rtnl_sk);
2438         }
2439         if (bss->added_bridge) {
2440                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2441                                           0) < 0)
2442                         wpa_printf(MSG_INFO,
2443                                    "nl80211: Could not set bridge %s down",
2444                                    bss->brname);
2445                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2446                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2447                                    "bridge %s: %s",
2448                                    bss->brname, strerror(errno));
2449         }
2450
2451         nl80211_remove_monitor_interface(drv);
2452
2453         if (is_ap_interface(drv->nlmode))
2454                 wpa_driver_nl80211_del_beacon(drv);
2455
2456         if (drv->eapol_sock >= 0) {
2457                 eloop_unregister_read_sock(drv->eapol_sock);
2458                 close(drv->eapol_sock);
2459         }
2460
2461         if (drv->if_indices != drv->default_if_indices)
2462                 os_free(drv->if_indices);
2463
2464         if (drv->if_indices_reason != drv->default_if_indices_reason)
2465                 os_free(drv->if_indices_reason);
2466
2467         if (drv->disabled_11b_rates)
2468                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2469
2470         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2471                                IF_OPER_UP);
2472         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2473         rfkill_deinit(drv->rfkill);
2474
2475         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2476
2477         if (!drv->start_iface_up)
2478                 (void) i802_set_iface_flags(bss, 0);
2479
2480         if (drv->addr_changed) {
2481                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2482                                           0) < 0) {
2483                         wpa_printf(MSG_DEBUG,
2484                                    "nl80211: Could not set interface down to restore permanent MAC address");
2485                 }
2486                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2487                                        drv->perm_addr) < 0) {
2488                         wpa_printf(MSG_DEBUG,
2489                                    "nl80211: Could not restore permanent MAC address");
2490                 }
2491         }
2492
2493         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2494                 if (!drv->hostapd || !drv->start_mode_ap)
2495                         wpa_driver_nl80211_set_mode(bss,
2496                                                     NL80211_IFTYPE_STATION);
2497                 nl80211_mgmt_unsubscribe(bss, "deinit");
2498         } else {
2499                 nl80211_mgmt_unsubscribe(bss, "deinit");
2500                 nl80211_del_p2pdev(bss);
2501         }
2502
2503         nl80211_destroy_bss(drv->first_bss);
2504
2505         os_free(drv->filter_ssids);
2506
2507         os_free(drv->auth_ie);
2508
2509         if (drv->in_interface_list)
2510                 dl_list_del(&drv->list);
2511
2512         os_free(drv->extended_capa);
2513         os_free(drv->extended_capa_mask);
2514         for (i = 0; i < drv->num_iface_ext_capa; i++) {
2515                 os_free(drv->iface_ext_capa[i].ext_capa);
2516                 os_free(drv->iface_ext_capa[i].ext_capa_mask);
2517         }
2518         os_free(drv->first_bss);
2519         os_free(drv);
2520 }
2521
2522
2523 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2524 {
2525         switch (alg) {
2526         case WPA_ALG_WEP:
2527                 if (key_len == 5)
2528                         return WLAN_CIPHER_SUITE_WEP40;
2529                 return WLAN_CIPHER_SUITE_WEP104;
2530         case WPA_ALG_TKIP:
2531                 return WLAN_CIPHER_SUITE_TKIP;
2532         case WPA_ALG_CCMP:
2533                 return WLAN_CIPHER_SUITE_CCMP;
2534         case WPA_ALG_GCMP:
2535                 return WLAN_CIPHER_SUITE_GCMP;
2536         case WPA_ALG_CCMP_256:
2537                 return WLAN_CIPHER_SUITE_CCMP_256;
2538         case WPA_ALG_GCMP_256:
2539                 return WLAN_CIPHER_SUITE_GCMP_256;
2540         case WPA_ALG_IGTK:
2541                 return WLAN_CIPHER_SUITE_AES_CMAC;
2542         case WPA_ALG_BIP_GMAC_128:
2543                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2544         case WPA_ALG_BIP_GMAC_256:
2545                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2546         case WPA_ALG_BIP_CMAC_256:
2547                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2548         case WPA_ALG_SMS4:
2549                 return WLAN_CIPHER_SUITE_SMS4;
2550         case WPA_ALG_KRK:
2551                 return WLAN_CIPHER_SUITE_KRK;
2552         case WPA_ALG_NONE:
2553         case WPA_ALG_PMK:
2554                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2555                            alg);
2556                 return 0;
2557         }
2558
2559         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2560                    alg);
2561         return 0;
2562 }
2563
2564
2565 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2566 {
2567         switch (cipher) {
2568         case WPA_CIPHER_CCMP_256:
2569                 return WLAN_CIPHER_SUITE_CCMP_256;
2570         case WPA_CIPHER_GCMP_256:
2571                 return WLAN_CIPHER_SUITE_GCMP_256;
2572         case WPA_CIPHER_CCMP:
2573                 return WLAN_CIPHER_SUITE_CCMP;
2574         case WPA_CIPHER_GCMP:
2575                 return WLAN_CIPHER_SUITE_GCMP;
2576         case WPA_CIPHER_TKIP:
2577                 return WLAN_CIPHER_SUITE_TKIP;
2578         case WPA_CIPHER_WEP104:
2579                 return WLAN_CIPHER_SUITE_WEP104;
2580         case WPA_CIPHER_WEP40:
2581                 return WLAN_CIPHER_SUITE_WEP40;
2582         case WPA_CIPHER_GTK_NOT_USED:
2583                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2584         }
2585
2586         return 0;
2587 }
2588
2589
2590 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2591                                        int max_suites)
2592 {
2593         int num_suites = 0;
2594
2595         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2596                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2597         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2598                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2599         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2600                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2601         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2602                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2603         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2604                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2605         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2606                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2607         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2608                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2609
2610         return num_suites;
2611 }
2612
2613
2614 #ifdef CONFIG_DRIVER_NL80211_QCA
2615 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2616                                   const u8 *key, size_t key_len)
2617 {
2618         struct nl_msg *msg;
2619         int ret;
2620
2621         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2622                 return 0;
2623
2624         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2625             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2626             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2627                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2628             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2629                 nl80211_nlmsg_clear(msg);
2630                 nlmsg_free(msg);
2631                 return -1;
2632         }
2633         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2634         if (ret) {
2635                 wpa_printf(MSG_DEBUG,
2636                            "nl80211: Key management set key failed: ret=%d (%s)",
2637                            ret, strerror(-ret));
2638         }
2639
2640         return ret;
2641 }
2642 #endif /* CONFIG_DRIVER_NL80211_QCA */
2643
2644
2645 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2646                                       enum wpa_alg alg, const u8 *addr,
2647                                       int key_idx, int set_tx,
2648                                       const u8 *seq, size_t seq_len,
2649                                       const u8 *key, size_t key_len)
2650 {
2651         struct wpa_driver_nl80211_data *drv = bss->drv;
2652         int ifindex;
2653         struct nl_msg *msg = NULL;
2654         int ret;
2655         int tdls = 0;
2656
2657         /* Ignore for P2P Device */
2658         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2659                 return 0;
2660
2661         ifindex = if_nametoindex(ifname);
2662         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2663                    "set_tx=%d seq_len=%lu key_len=%lu",
2664                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2665                    (unsigned long) seq_len, (unsigned long) key_len);
2666 #ifdef CONFIG_TDLS
2667         if (key_idx == -1) {
2668                 key_idx = 0;
2669                 tdls = 1;
2670         }
2671 #endif /* CONFIG_TDLS */
2672
2673 #ifdef CONFIG_DRIVER_NL80211_QCA
2674         if (alg == WPA_ALG_PMK &&
2675             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2676                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2677                            __func__);
2678                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2679                 return ret;
2680         }
2681 #endif /* CONFIG_DRIVER_NL80211_QCA */
2682
2683         if (alg == WPA_ALG_NONE) {
2684                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2685                 if (!msg)
2686                         return -ENOBUFS;
2687         } else {
2688                 u32 suite;
2689
2690                 suite = wpa_alg_to_cipher_suite(alg, key_len);
2691                 if (!suite)
2692                         goto fail;
2693                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2694                 if (!msg ||
2695                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2696                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER, suite))
2697                         goto fail;
2698                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2699         }
2700
2701         if (seq && seq_len) {
2702                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2703                         goto fail;
2704                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2705         }
2706
2707         if (addr && !is_broadcast_ether_addr(addr)) {
2708                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2709                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2710                         goto fail;
2711
2712                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2713                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2714                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2715                                         NL80211_KEYTYPE_GROUP))
2716                                 goto fail;
2717                 }
2718         } else if (addr && is_broadcast_ether_addr(addr)) {
2719                 struct nlattr *types;
2720
2721                 wpa_printf(MSG_DEBUG, "   broadcast key");
2722
2723                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2724                 if (!types ||
2725                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2726                         goto fail;
2727                 nla_nest_end(msg, types);
2728         }
2729         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2730                 goto fail;
2731
2732         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2733         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2734                 ret = 0;
2735         if (ret)
2736                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2737                            ret, strerror(-ret));
2738
2739         /*
2740          * If we failed or don't need to set the default TX key (below),
2741          * we're done here.
2742          */
2743         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2744                 return ret;
2745         if (is_ap_interface(drv->nlmode) && addr &&
2746             !is_broadcast_ether_addr(addr))
2747                 return ret;
2748
2749         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2750         if (!msg ||
2751             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2752             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2753                                alg == WPA_ALG_BIP_GMAC_128 ||
2754                                alg == WPA_ALG_BIP_GMAC_256 ||
2755                                alg == WPA_ALG_BIP_CMAC_256) ?
2756                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2757                          NL80211_ATTR_KEY_DEFAULT))
2758                 goto fail;
2759         if (addr && is_broadcast_ether_addr(addr)) {
2760                 struct nlattr *types;
2761
2762                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2763                 if (!types ||
2764                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2765                         goto fail;
2766                 nla_nest_end(msg, types);
2767         } else if (addr) {
2768                 struct nlattr *types;
2769
2770                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2771                 if (!types ||
2772                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2773                         goto fail;
2774                 nla_nest_end(msg, types);
2775         }
2776
2777         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2778         if (ret == -ENOENT)
2779                 ret = 0;
2780         if (ret)
2781                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2782                            "err=%d %s)", ret, strerror(-ret));
2783         return ret;
2784
2785 fail:
2786         nl80211_nlmsg_clear(msg);
2787         nlmsg_free(msg);
2788         return -ENOBUFS;
2789 }
2790
2791
2792 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2793                       int key_idx, int defkey,
2794                       const u8 *seq, size_t seq_len,
2795                       const u8 *key, size_t key_len)
2796 {
2797         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2798         u32 suite;
2799
2800         if (!key_attr)
2801                 return -1;
2802
2803         suite = wpa_alg_to_cipher_suite(alg, key_len);
2804         if (!suite)
2805                 return -1;
2806
2807         if (defkey && alg == WPA_ALG_IGTK) {
2808                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2809                         return -1;
2810         } else if (defkey) {
2811                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2812                         return -1;
2813         }
2814
2815         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2816             nla_put_u32(msg, NL80211_KEY_CIPHER, suite) ||
2817             (seq && seq_len &&
2818              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2819             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2820                 return -1;
2821
2822         nla_nest_end(msg, key_attr);
2823
2824         return 0;
2825 }
2826
2827
2828 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2829                                  struct nl_msg *msg)
2830 {
2831         int i, privacy = 0;
2832         struct nlattr *nl_keys, *nl_key;
2833
2834         for (i = 0; i < 4; i++) {
2835                 if (!params->wep_key[i])
2836                         continue;
2837                 privacy = 1;
2838                 break;
2839         }
2840         if (params->wps == WPS_MODE_PRIVACY)
2841                 privacy = 1;
2842         if (params->pairwise_suite &&
2843             params->pairwise_suite != WPA_CIPHER_NONE)
2844                 privacy = 1;
2845
2846         if (!privacy)
2847                 return 0;
2848
2849         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2850                 return -ENOBUFS;
2851
2852         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2853         if (!nl_keys)
2854                 return -ENOBUFS;
2855
2856         for (i = 0; i < 4; i++) {
2857                 if (!params->wep_key[i])
2858                         continue;
2859
2860                 nl_key = nla_nest_start(msg, i);
2861                 if (!nl_key ||
2862                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2863                             params->wep_key[i]) ||
2864                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2865                                 params->wep_key_len[i] == 5 ?
2866                                 WLAN_CIPHER_SUITE_WEP40 :
2867                                 WLAN_CIPHER_SUITE_WEP104) ||
2868                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2869                     (i == params->wep_tx_keyidx &&
2870                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2871                         return -ENOBUFS;
2872
2873                 nla_nest_end(msg, nl_key);
2874         }
2875         nla_nest_end(msg, nl_keys);
2876
2877         return 0;
2878 }
2879
2880
2881 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2882                             const u8 *addr, int cmd, u16 reason_code,
2883                             int local_state_change)
2884 {
2885         int ret;
2886         struct nl_msg *msg;
2887
2888         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2889             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2890             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2891             (local_state_change &&
2892              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2893                 nlmsg_free(msg);
2894                 return -1;
2895         }
2896
2897         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2898         if (ret) {
2899                 wpa_dbg(drv->ctx, MSG_DEBUG,
2900                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2901                         reason_code, ret, strerror(-ret));
2902         }
2903         return ret;
2904 }
2905
2906
2907 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2908                                          int reason_code)
2909 {
2910         int ret;
2911
2912         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2913         nl80211_mark_disconnected(drv);
2914         /* Disconnect command doesn't need BSSID - it uses cached value */
2915         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2916                                       reason_code, 0);
2917         /*
2918          * For locally generated disconnect, supplicant already generates a
2919          * DEAUTH event, so ignore the event from NL80211.
2920          */
2921         drv->ignore_next_local_disconnect = ret == 0;
2922
2923         return ret;
2924 }
2925
2926
2927 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2928                                              const u8 *addr, int reason_code)
2929 {
2930         struct wpa_driver_nl80211_data *drv = bss->drv;
2931         int ret;
2932
2933         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2934                 nl80211_mark_disconnected(drv);
2935                 return nl80211_leave_ibss(drv, 1);
2936         }
2937         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2938                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2939         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2940                    __func__, MAC2STR(addr), reason_code);
2941         nl80211_mark_disconnected(drv);
2942         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2943                                       reason_code, 0);
2944         /*
2945          * For locally generated deauthenticate, supplicant already generates a
2946          * DEAUTH event, so ignore the event from NL80211.
2947          */
2948         drv->ignore_next_local_deauth = ret == 0;
2949         return ret;
2950 }
2951
2952
2953 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2954                                      struct wpa_driver_auth_params *params)
2955 {
2956         int i;
2957
2958         drv->auth_freq = params->freq;
2959         drv->auth_alg = params->auth_alg;
2960         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2961         drv->auth_local_state_change = params->local_state_change;
2962         drv->auth_p2p = params->p2p;
2963
2964         if (params->bssid)
2965                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2966         else
2967                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2968
2969         if (params->ssid) {
2970                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2971                 drv->auth_ssid_len = params->ssid_len;
2972         } else
2973                 drv->auth_ssid_len = 0;
2974
2975
2976         os_free(drv->auth_ie);
2977         drv->auth_ie = NULL;
2978         drv->auth_ie_len = 0;
2979         if (params->ie) {
2980                 drv->auth_ie = os_malloc(params->ie_len);
2981                 if (drv->auth_ie) {
2982                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2983                         drv->auth_ie_len = params->ie_len;
2984                 }
2985         }
2986
2987         for (i = 0; i < 4; i++) {
2988                 if (params->wep_key[i] && params->wep_key_len[i] &&
2989                     params->wep_key_len[i] <= 16) {
2990                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2991                                   params->wep_key_len[i]);
2992                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2993                 } else
2994                         drv->auth_wep_key_len[i] = 0;
2995         }
2996 }
2997
2998
2999 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
3000 {
3001         struct wpa_driver_nl80211_data *drv = bss->drv;
3002
3003         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
3004                 return;
3005
3006         /*
3007          * Looks like we failed to unmask 11b rates previously. This could
3008          * happen, e.g., if the interface was down at the point in time when a
3009          * P2P group was terminated.
3010          */
3011         wpa_printf(MSG_DEBUG,
3012                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
3013                    bss->ifname);
3014         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3015 }
3016
3017
3018 static int wpa_driver_nl80211_authenticate(
3019         struct i802_bss *bss, struct wpa_driver_auth_params *params)
3020 {
3021         struct wpa_driver_nl80211_data *drv = bss->drv;
3022         int ret = -1, i;
3023         struct nl_msg *msg;
3024         enum nl80211_auth_type type;
3025         enum nl80211_iftype nlmode;
3026         int count = 0;
3027         int is_retry;
3028
3029         nl80211_unmask_11b_rates(bss);
3030
3031         is_retry = drv->retry_auth;
3032         drv->retry_auth = 0;
3033         drv->ignore_deauth_event = 0;
3034
3035         nl80211_mark_disconnected(drv);
3036         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3037         if (params->bssid)
3038                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3039         else
3040                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3041         /* FIX: IBSS mode */
3042         nlmode = params->p2p ?
3043                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3044         if (drv->nlmode != nlmode &&
3045             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3046                 return -1;
3047
3048 retry:
3049         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3050                    drv->ifindex);
3051
3052         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
3053         if (!msg)
3054                 goto fail;
3055
3056         for (i = 0; i < 4; i++) {
3057                 if (!params->wep_key[i])
3058                         continue;
3059                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3060                                            NULL, i,
3061                                            i == params->wep_tx_keyidx, NULL, 0,
3062                                            params->wep_key[i],
3063                                            params->wep_key_len[i]);
3064                 if (params->wep_tx_keyidx != i)
3065                         continue;
3066                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3067                                params->wep_key[i], params->wep_key_len[i]))
3068                         goto fail;
3069         }
3070
3071         if (params->bssid) {
3072                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3073                            MAC2STR(params->bssid));
3074                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
3075                         goto fail;
3076         }
3077         if (params->freq) {
3078                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3079                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
3080                         goto fail;
3081         }
3082         if (params->ssid) {
3083                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3084                                   params->ssid, params->ssid_len);
3085                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
3086                             params->ssid))
3087                         goto fail;
3088         }
3089         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3090         if (params->ie &&
3091             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
3092                 goto fail;
3093         if (params->sae_data) {
3094                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3095                             params->sae_data_len);
3096                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3097                             params->sae_data))
3098                         goto fail;
3099         }
3100         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3101                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3102         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3103                 type = NL80211_AUTHTYPE_SHARED_KEY;
3104         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3105                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3106         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3107                 type = NL80211_AUTHTYPE_FT;
3108         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3109                 type = NL80211_AUTHTYPE_SAE;
3110         else
3111                 goto fail;
3112         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3113         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
3114                 goto fail;
3115         if (params->local_state_change) {
3116                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3117                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
3118                         goto fail;
3119         }
3120
3121         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3122         msg = NULL;
3123         if (ret) {
3124                 wpa_dbg(drv->ctx, MSG_DEBUG,
3125                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3126                         ret, strerror(-ret));
3127                 count++;
3128                 if (ret == -EALREADY && count == 1 && params->bssid &&
3129                     !params->local_state_change) {
3130                         /*
3131                          * mac80211 does not currently accept new
3132                          * authentication if we are already authenticated. As a
3133                          * workaround, force deauthentication and try again.
3134                          */
3135                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3136                                    "after forced deauthentication");
3137                         drv->ignore_deauth_event = 1;
3138                         wpa_driver_nl80211_deauthenticate(
3139                                 bss, params->bssid,
3140                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3141                         nlmsg_free(msg);
3142                         goto retry;
3143                 }
3144
3145                 if (ret == -ENOENT && params->freq && !is_retry) {
3146                         /*
3147                          * cfg80211 has likely expired the BSS entry even
3148                          * though it was previously available in our internal
3149                          * BSS table. To recover quickly, start a single
3150                          * channel scan on the specified channel.
3151                          */
3152                         struct wpa_driver_scan_params scan;
3153                         int freqs[2];
3154
3155                         os_memset(&scan, 0, sizeof(scan));
3156                         scan.num_ssids = 1;
3157                         if (params->ssid) {
3158                                 scan.ssids[0].ssid = params->ssid;
3159                                 scan.ssids[0].ssid_len = params->ssid_len;
3160                         }
3161                         freqs[0] = params->freq;
3162                         freqs[1] = 0;
3163                         scan.freqs = freqs;
3164                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3165                                    "channel scan to refresh cfg80211 BSS "
3166                                    "entry");
3167                         ret = wpa_driver_nl80211_scan(bss, &scan);
3168                         if (ret == 0) {
3169                                 nl80211_copy_auth_params(drv, params);
3170                                 drv->scan_for_auth = 1;
3171                         }
3172                 } else if (is_retry) {
3173                         /*
3174                          * Need to indicate this with an event since the return
3175                          * value from the retry is not delivered to core code.
3176                          */
3177                         union wpa_event_data event;
3178                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3179                                    "failed");
3180                         os_memset(&event, 0, sizeof(event));
3181                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3182                                   ETH_ALEN);
3183                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3184                                              &event);
3185                 }
3186         } else {
3187                 wpa_printf(MSG_DEBUG,
3188                            "nl80211: Authentication request send successfully");
3189         }
3190
3191 fail:
3192         nlmsg_free(msg);
3193         return ret;
3194 }
3195
3196
3197 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3198 {
3199         struct wpa_driver_auth_params params;
3200         struct i802_bss *bss = drv->first_bss;
3201         int i;
3202
3203         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3204
3205         os_memset(&params, 0, sizeof(params));
3206         params.freq = drv->auth_freq;
3207         params.auth_alg = drv->auth_alg;
3208         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3209         params.local_state_change = drv->auth_local_state_change;
3210         params.p2p = drv->auth_p2p;
3211
3212         if (!is_zero_ether_addr(drv->auth_bssid_))
3213                 params.bssid = drv->auth_bssid_;
3214
3215         if (drv->auth_ssid_len) {
3216                 params.ssid = drv->auth_ssid;
3217                 params.ssid_len = drv->auth_ssid_len;
3218         }
3219
3220         params.ie = drv->auth_ie;
3221         params.ie_len = drv->auth_ie_len;
3222
3223         for (i = 0; i < 4; i++) {
3224                 if (drv->auth_wep_key_len[i]) {
3225                         params.wep_key[i] = drv->auth_wep_key[i];
3226                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3227                 }
3228         }
3229
3230         drv->retry_auth = 1;
3231         return wpa_driver_nl80211_authenticate(bss, &params);
3232 }
3233
3234
3235 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3236                                          const void *data, size_t len,
3237                                          int encrypt, int noack,
3238                                          unsigned int freq, int no_cck,
3239                                          int offchanok, unsigned int wait_time,
3240                                          const u16 *csa_offs,
3241                                          size_t csa_offs_len)
3242 {
3243         struct wpa_driver_nl80211_data *drv = bss->drv;
3244         u64 cookie;
3245         int res;
3246
3247         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3248                 freq = nl80211_get_assoc_freq(drv);
3249                 wpa_printf(MSG_DEBUG,
3250                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3251                            freq);
3252         }
3253         if (freq == 0) {
3254                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3255                            bss->freq);
3256                 freq = bss->freq;
3257         }
3258
3259         if (drv->use_monitor) {
3260                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3261                            freq, bss->freq);
3262                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3263         }
3264
3265         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3266         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3267                                      &cookie, no_cck, noack, offchanok,
3268                                      csa_offs, csa_offs_len);
3269         if (res == 0 && !noack) {
3270                 const struct ieee80211_mgmt *mgmt;
3271                 u16 fc;
3272
3273                 mgmt = (const struct ieee80211_mgmt *) data;
3274                 fc = le_to_host16(mgmt->frame_control);
3275                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3276                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3277                         wpa_printf(MSG_MSGDUMP,
3278                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3279                                    (long long unsigned int)
3280                                    drv->send_action_cookie,
3281                                    (long long unsigned int) cookie);
3282                         drv->send_action_cookie = cookie;
3283                 }
3284         }
3285
3286         return res;
3287 }
3288
3289
3290 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3291                                         size_t data_len, int noack,
3292                                         unsigned int freq, int no_cck,
3293                                         int offchanok,
3294                                         unsigned int wait_time,
3295                                         const u16 *csa_offs,
3296                                         size_t csa_offs_len)
3297 {
3298         struct wpa_driver_nl80211_data *drv = bss->drv;
3299         struct ieee80211_mgmt *mgmt;
3300         int encrypt = 1;
3301         u16 fc;
3302
3303         mgmt = (struct ieee80211_mgmt *) data;
3304         fc = le_to_host16(mgmt->frame_control);
3305         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3306                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3307                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3308                    fc, fc2str(fc), drv->nlmode);
3309
3310         if ((is_sta_interface(drv->nlmode) ||
3311              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3312             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3313             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3314                 /*
3315                  * The use of last_mgmt_freq is a bit of a hack,
3316                  * but it works due to the single-threaded nature
3317                  * of wpa_supplicant.
3318                  */
3319                 if (freq == 0) {
3320                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3321                                    drv->last_mgmt_freq);
3322                         freq = drv->last_mgmt_freq;
3323                 }
3324                 return nl80211_send_frame_cmd(bss, freq, 0,
3325                                               data, data_len, NULL, 1, noack,
3326                                               1, csa_offs, csa_offs_len);
3327         }
3328
3329         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3330                 if (freq == 0) {
3331                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3332                                    bss->freq);
3333                         freq = bss->freq;
3334                 }
3335                 return nl80211_send_frame_cmd(bss, freq,
3336                                               (int) freq == bss->freq ? 0 :
3337                                               wait_time,
3338                                               data, data_len,
3339                                               &drv->send_action_cookie,
3340                                               no_cck, noack, offchanok,
3341                                               csa_offs, csa_offs_len);
3342         }
3343
3344         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3345             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3346                 /*
3347                  * Only one of the authentication frame types is encrypted.
3348                  * In order for static WEP encryption to work properly (i.e.,
3349                  * to not encrypt the frame), we need to tell mac80211 about
3350                  * the frames that must not be encrypted.
3351                  */
3352                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3353                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3354                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3355                         encrypt = 0;
3356         }
3357
3358         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3359         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3360                                              noack, freq, no_cck, offchanok,
3361                                              wait_time, csa_offs,
3362                                              csa_offs_len);
3363 }
3364
3365
3366 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3367 {
3368         u8 rates[NL80211_MAX_SUPP_RATES];
3369         u8 rates_len = 0;
3370         int i;
3371
3372         if (!basic_rates)
3373                 return 0;
3374
3375         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3376                 rates[rates_len++] = basic_rates[i] / 5;
3377
3378         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3379 }
3380
3381
3382 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3383                            int slot, int ht_opmode, int ap_isolate,
3384                            const int *basic_rates)
3385 {
3386         struct wpa_driver_nl80211_data *drv = bss->drv;
3387         struct nl_msg *msg;
3388
3389         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3390             (cts >= 0 &&
3391              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3392             (preamble >= 0 &&
3393              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3394             (slot >= 0 &&
3395              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3396             (ht_opmode >= 0 &&
3397              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3398             (ap_isolate >= 0 &&
3399              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3400             nl80211_put_basic_rates(msg, basic_rates)) {
3401                 nlmsg_free(msg);
3402                 return -ENOBUFS;
3403         }
3404
3405         return send_and_recv_msgs(drv, msg, NULL, NULL);
3406 }
3407
3408
3409 static int wpa_driver_nl80211_set_acl(void *priv,
3410                                       struct hostapd_acl_params *params)
3411 {
3412         struct i802_bss *bss = priv;
3413         struct wpa_driver_nl80211_data *drv = bss->drv;
3414         struct nl_msg *msg;
3415         struct nl_msg *acl;
3416         unsigned int i;
3417         int ret;
3418
3419         if (!(drv->capa.max_acl_mac_addrs))
3420                 return -ENOTSUP;
3421
3422         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3423                 return -ENOTSUP;
3424
3425         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3426                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3427
3428         acl = nlmsg_alloc();
3429         if (!acl)
3430                 return -ENOMEM;
3431         for (i = 0; i < params->num_mac_acl; i++) {
3432                 if (nla_put(acl, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3433                         nlmsg_free(acl);
3434                         return -ENOMEM;
3435                 }
3436         }
3437
3438         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3439             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3440                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3441                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3442             nla_put_nested(msg, NL80211_ATTR_MAC_ADDRS, acl)) {
3443                 nlmsg_free(msg);
3444                 nlmsg_free(acl);
3445                 return -ENOMEM;
3446         }
3447         nlmsg_free(acl);
3448
3449         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3450         if (ret) {
3451                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3452                            ret, strerror(-ret));
3453         }
3454
3455         return ret;
3456 }
3457
3458
3459 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3460 {
3461         if (beacon_int > 0) {
3462                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3463                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3464                                    beacon_int);
3465         }
3466
3467         return 0;
3468 }
3469
3470
3471 static int nl80211_put_dtim_period(struct nl_msg *msg, int dtim_period)
3472 {
3473         if (dtim_period > 0) {
3474                 wpa_printf(MSG_DEBUG, "  * dtim_period=%d", dtim_period);
3475                 return nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3476         }
3477
3478         return 0;
3479 }
3480
3481
3482 static int wpa_driver_nl80211_set_ap(void *priv,
3483                                      struct wpa_driver_ap_params *params)
3484 {
3485         struct i802_bss *bss = priv;
3486         struct wpa_driver_nl80211_data *drv = bss->drv;
3487         struct nl_msg *msg;
3488         u8 cmd = NL80211_CMD_NEW_BEACON;
3489         int ret;
3490         int beacon_set;
3491         int num_suites;
3492         int smps_mode;
3493         u32 suites[10], suite;
3494         u32 ver;
3495
3496         beacon_set = params->reenable ? 0 : bss->beacon_set;
3497
3498         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3499                    beacon_set);
3500         if (beacon_set)
3501                 cmd = NL80211_CMD_SET_BEACON;
3502
3503         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3504                     params->head, params->head_len);
3505         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3506                     params->tail, params->tail_len);
3507         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3508         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3509         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3510         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3511                           params->ssid, params->ssid_len);
3512         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3513             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3514                     params->head) ||
3515             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3516                     params->tail) ||
3517             nl80211_put_beacon_int(msg, params->beacon_int) ||
3518             nl80211_put_dtim_period(msg, params->dtim_period) ||
3519             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3520                 goto fail;
3521         if (params->proberesp && params->proberesp_len) {
3522                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3523                             params->proberesp, params->proberesp_len);
3524                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3525                             params->proberesp))
3526                         goto fail;
3527         }
3528         switch (params->hide_ssid) {
3529         case NO_SSID_HIDING:
3530                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3531                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3532                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3533                         goto fail;
3534                 break;
3535         case HIDDEN_SSID_ZERO_LEN:
3536                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3537                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3538                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3539                         goto fail;
3540                 break;
3541         case HIDDEN_SSID_ZERO_CONTENTS:
3542                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3543                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3544                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3545                         goto fail;
3546                 break;
3547         }
3548         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3549         if (params->privacy &&
3550             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3551                 goto fail;
3552         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3553         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3554             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3555                 /* Leave out the attribute */
3556         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3557                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3558                                 NL80211_AUTHTYPE_SHARED_KEY))
3559                         goto fail;
3560         } else {
3561                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3562                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3563                         goto fail;
3564         }
3565
3566         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3567         ver = 0;
3568         if (params->wpa_version & WPA_PROTO_WPA)
3569                 ver |= NL80211_WPA_VERSION_1;
3570         if (params->wpa_version & WPA_PROTO_RSN)
3571                 ver |= NL80211_WPA_VERSION_2;
3572         if (ver &&
3573             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3574                 goto fail;
3575
3576         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3577                    params->key_mgmt_suites);
3578         num_suites = 0;
3579         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3580                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3581         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3582                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3583         if (num_suites &&
3584             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3585                     suites))
3586                 goto fail;
3587
3588         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3589             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3590             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3591                 goto fail;
3592
3593         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3594                    params->pairwise_ciphers);
3595         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3596                                                  suites, ARRAY_SIZE(suites));
3597         if (num_suites &&
3598             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3599                     num_suites * sizeof(u32), suites))
3600                 goto fail;
3601
3602         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3603                    params->group_cipher);
3604         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3605         if (suite &&
3606             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3607                 goto fail;
3608
3609         if (params->ht_opmode != -1) {
3610                 switch (params->smps_mode) {
3611                 case HT_CAP_INFO_SMPS_DYNAMIC:
3612                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3613                         smps_mode = NL80211_SMPS_DYNAMIC;
3614                         break;
3615                 case HT_CAP_INFO_SMPS_STATIC:
3616                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3617                         smps_mode = NL80211_SMPS_STATIC;
3618                         break;
3619                 default:
3620                         /* invalid - fallback to smps off */
3621                 case HT_CAP_INFO_SMPS_DISABLED:
3622                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3623                         smps_mode = NL80211_SMPS_OFF;
3624                         break;
3625                 }
3626                 if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3627                         goto fail;
3628         }
3629
3630         if (params->beacon_ies) {
3631                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3632                                 params->beacon_ies);
3633                 if (nla_put(msg, NL80211_ATTR_IE,
3634                             wpabuf_len(params->beacon_ies),
3635                             wpabuf_head(params->beacon_ies)))
3636                         goto fail;
3637         }
3638         if (params->proberesp_ies) {
3639                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3640                                 params->proberesp_ies);
3641                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3642                             wpabuf_len(params->proberesp_ies),
3643                             wpabuf_head(params->proberesp_ies)))
3644                         goto fail;
3645         }
3646         if (params->assocresp_ies) {
3647                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3648                                 params->assocresp_ies);
3649                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3650                             wpabuf_len(params->assocresp_ies),
3651                             wpabuf_head(params->assocresp_ies)))
3652                         goto fail;
3653         }
3654
3655         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3656                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3657                            params->ap_max_inactivity);
3658                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3659                                 params->ap_max_inactivity))
3660                         goto fail;
3661         }
3662
3663 #ifdef CONFIG_P2P
3664         if (params->p2p_go_ctwindow > 0) {
3665                 if (drv->p2p_go_ctwindow_supported) {
3666                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3667                                    params->p2p_go_ctwindow);
3668                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3669                                        params->p2p_go_ctwindow))
3670                                 goto fail;
3671                 } else {
3672                         wpa_printf(MSG_INFO,
3673                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3674                 }
3675         }
3676 #endif /* CONFIG_P2P */
3677
3678         if (params->pbss) {
3679                 wpa_printf(MSG_DEBUG, "nl80211: PBSS");
3680                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
3681                         goto fail;
3682         }
3683
3684         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3685         if (ret) {
3686                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3687                            ret, strerror(-ret));
3688         } else {
3689                 bss->beacon_set = 1;
3690                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3691                                 params->short_slot_time, params->ht_opmode,
3692                                 params->isolate, params->basic_rates);
3693                 if (beacon_set && params->freq &&
3694                     params->freq->bandwidth != bss->bandwidth) {
3695                         wpa_printf(MSG_DEBUG,
3696                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3697                                    bss->ifname, bss->bandwidth,
3698                                    params->freq->bandwidth);
3699                         ret = nl80211_set_channel(bss, params->freq, 1);
3700                         if (ret) {
3701                                 wpa_printf(MSG_DEBUG,
3702                                            "nl80211: Frequency set failed: %d (%s)",
3703                                            ret, strerror(-ret));
3704                         } else {
3705                                 wpa_printf(MSG_DEBUG,
3706                                            "nl80211: Frequency set succeeded for ht2040 coex");
3707                                 bss->bandwidth = params->freq->bandwidth;
3708                         }
3709                 } else if (!beacon_set) {
3710                         /*
3711                          * cfg80211 updates the driver on frequence change in AP
3712                          * mode only at the point when beaconing is started, so
3713                          * set the initial value here.
3714                          */
3715                         bss->bandwidth = params->freq->bandwidth;
3716                 }
3717         }
3718         return ret;
3719 fail:
3720         nlmsg_free(msg);
3721         return -ENOBUFS;
3722 }
3723
3724
3725 static int nl80211_put_freq_params(struct nl_msg *msg,
3726                                    const struct hostapd_freq_params *freq)
3727 {
3728         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3729         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3730                 return -ENOBUFS;
3731
3732         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3733         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3734
3735         if (freq->vht_enabled) {
3736                 enum nl80211_chan_width cw;
3737
3738                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3739                 switch (freq->bandwidth) {
3740                 case 20:
3741                         cw = NL80211_CHAN_WIDTH_20;
3742                         break;
3743                 case 40:
3744                         cw = NL80211_CHAN_WIDTH_40;
3745                         break;
3746                 case 80:
3747                         if (freq->center_freq2)
3748                                 cw = NL80211_CHAN_WIDTH_80P80;
3749                         else
3750                                 cw = NL80211_CHAN_WIDTH_80;
3751                         break;
3752                 case 160:
3753                         cw = NL80211_CHAN_WIDTH_160;
3754                         break;
3755                 default:
3756                         return -EINVAL;
3757                 }
3758
3759                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3760                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3761                            freq->center_freq1);
3762                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3763                            freq->center_freq2);
3764                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3765                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3766                                 freq->center_freq1) ||
3767                     (freq->center_freq2 &&
3768                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3769                                  freq->center_freq2)))
3770                         return -ENOBUFS;
3771         } else if (freq->ht_enabled) {
3772                 enum nl80211_channel_type ct;
3773
3774                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3775                            freq->sec_channel_offset);
3776                 switch (freq->sec_channel_offset) {
3777                 case -1:
3778                         ct = NL80211_CHAN_HT40MINUS;
3779                         break;
3780                 case 1:
3781                         ct = NL80211_CHAN_HT40PLUS;
3782                         break;
3783                 default:
3784                         ct = NL80211_CHAN_HT20;
3785                         break;
3786                 }
3787
3788                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3789                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3790                         return -ENOBUFS;
3791         } else {
3792                 wpa_printf(MSG_DEBUG, "  * channel_type=%d",
3793                            NL80211_CHAN_NO_HT);
3794                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3795                                 NL80211_CHAN_NO_HT))
3796                         return -ENOBUFS;
3797         }
3798         return 0;
3799 }
3800
3801
3802 static int nl80211_set_channel(struct i802_bss *bss,
3803                                struct hostapd_freq_params *freq, int set_chan)
3804 {
3805         struct wpa_driver_nl80211_data *drv = bss->drv;
3806         struct nl_msg *msg;
3807         int ret;
3808
3809         wpa_printf(MSG_DEBUG,
3810                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3811                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3812                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3813
3814         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3815                               NL80211_CMD_SET_WIPHY);
3816         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3817                 nlmsg_free(msg);
3818                 return -1;
3819         }
3820
3821         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3822         if (ret == 0) {
3823                 bss->freq = freq->freq;
3824                 return 0;
3825         }
3826         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3827                    "%d (%s)", freq->freq, ret, strerror(-ret));
3828         return -1;
3829 }
3830
3831
3832 static u32 sta_flags_nl80211(int flags)
3833 {
3834         u32 f = 0;
3835
3836         if (flags & WPA_STA_AUTHORIZED)
3837                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3838         if (flags & WPA_STA_WMM)
3839                 f |= BIT(NL80211_STA_FLAG_WME);
3840         if (flags & WPA_STA_SHORT_PREAMBLE)
3841                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3842         if (flags & WPA_STA_MFP)
3843                 f |= BIT(NL80211_STA_FLAG_MFP);
3844         if (flags & WPA_STA_TDLS_PEER)
3845                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3846         if (flags & WPA_STA_AUTHENTICATED)
3847                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3848         if (flags & WPA_STA_ASSOCIATED)
3849                 f |= BIT(NL80211_STA_FLAG_ASSOCIATED);
3850
3851         return f;
3852 }
3853
3854
3855 #ifdef CONFIG_MESH
3856 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3857 {
3858         switch (state) {
3859         case PLINK_IDLE:
3860                 return NL80211_PLINK_LISTEN;
3861         case PLINK_OPN_SNT:
3862                 return NL80211_PLINK_OPN_SNT;
3863         case PLINK_OPN_RCVD:
3864                 return NL80211_PLINK_OPN_RCVD;
3865         case PLINK_CNF_RCVD:
3866                 return NL80211_PLINK_CNF_RCVD;
3867         case PLINK_ESTAB:
3868                 return NL80211_PLINK_ESTAB;
3869         case PLINK_HOLDING:
3870                 return NL80211_PLINK_HOLDING;
3871         case PLINK_BLOCKED:
3872                 return NL80211_PLINK_BLOCKED;
3873         default:
3874                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3875                            state);
3876         }
3877         return -1;
3878 }
3879 #endif /* CONFIG_MESH */
3880
3881
3882 static int wpa_driver_nl80211_sta_add(void *priv,
3883                                       struct hostapd_sta_add_params *params)
3884 {
3885         struct i802_bss *bss = priv;
3886         struct wpa_driver_nl80211_data *drv = bss->drv;
3887         struct nl_msg *msg;
3888         struct nl80211_sta_flag_update upd;
3889         int ret = -ENOBUFS;
3890
3891         if ((params->flags & WPA_STA_TDLS_PEER) &&
3892             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3893                 return -EOPNOTSUPP;
3894
3895         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3896                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3897         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3898                               NL80211_CMD_NEW_STATION);
3899         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3900                 goto fail;
3901
3902         /*
3903          * Set the below properties only in one of the following cases:
3904          * 1. New station is added, already associated.
3905          * 2. Set WPA_STA_TDLS_PEER station.
3906          * 3. Set an already added unassociated station, if driver supports
3907          * full AP client state. (Set these properties after station became
3908          * associated will be rejected by the driver).
3909          */
3910         if (!params->set || (params->flags & WPA_STA_TDLS_PEER) ||
3911             (params->set && FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3912              (params->flags & WPA_STA_ASSOCIATED))) {
3913                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3914                             params->supp_rates, params->supp_rates_len);
3915                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3916                            params->capability);
3917                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3918                             params->supp_rates_len, params->supp_rates) ||
3919                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3920                                 params->capability))
3921                         goto fail;
3922
3923                 if (params->ht_capabilities) {
3924                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3925                                     (u8 *) params->ht_capabilities,
3926                                     sizeof(*params->ht_capabilities));
3927                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3928                                     sizeof(*params->ht_capabilities),
3929                                     params->ht_capabilities))
3930                                 goto fail;
3931                 }
3932
3933                 if (params->vht_capabilities) {
3934                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3935                                     (u8 *) params->vht_capabilities,
3936                                     sizeof(*params->vht_capabilities));
3937                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3938                                     sizeof(*params->vht_capabilities),
3939                                     params->vht_capabilities))
3940                                 goto fail;
3941                 }
3942
3943                 if (params->ext_capab) {
3944                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3945                                     params->ext_capab, params->ext_capab_len);
3946                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3947                                     params->ext_capab_len, params->ext_capab))
3948                                 goto fail;
3949                 }
3950
3951                 if (is_ap_interface(drv->nlmode) &&
3952                     nla_put_u8(msg, NL80211_ATTR_STA_SUPPORT_P2P_PS,
3953                                params->support_p2p_ps ?
3954                                NL80211_P2P_PS_SUPPORTED :
3955                                NL80211_P2P_PS_UNSUPPORTED))
3956                         goto fail;
3957         }
3958         if (!params->set) {
3959                 if (params->aid) {
3960                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3961                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3962                                 goto fail;
3963                 } else {
3964                         /*
3965                          * cfg80211 validates that AID is non-zero, so we have
3966                          * to make this a non-zero value for the TDLS case where
3967                          * a dummy STA entry is used for now and for a station
3968                          * that is still not associated.
3969                          */
3970                         wpa_printf(MSG_DEBUG, "  * aid=1 (%s workaround)",
3971                                    (params->flags & WPA_STA_TDLS_PEER) ?
3972                                    "TDLS" : "UNASSOC_STA");
3973                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3974                                 goto fail;
3975                 }
3976                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3977                            params->listen_interval);
3978                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3979                                 params->listen_interval))
3980                         goto fail;
3981         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3982                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3983                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3984                         goto fail;
3985         } else if (FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3986                    (params->flags & WPA_STA_ASSOCIATED)) {
3987                 wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3988                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3989                            params->listen_interval);
3990                 if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid) ||
3991                     nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3992                                 params->listen_interval))
3993                         goto fail;
3994         }
3995
3996         if (params->vht_opmode_enabled) {
3997                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3998                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3999                                params->vht_opmode))
4000                         goto fail;
4001         }
4002
4003         if (params->supp_channels) {
4004                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
4005                             params->supp_channels, params->supp_channels_len);
4006                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4007                             params->supp_channels_len, params->supp_channels))
4008                         goto fail;
4009         }
4010
4011         if (params->supp_oper_classes) {
4012                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
4013                             params->supp_oper_classes,
4014                             params->supp_oper_classes_len);
4015                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4016                             params->supp_oper_classes_len,
4017                             params->supp_oper_classes))
4018                         goto fail;
4019         }
4020
4021         os_memset(&upd, 0, sizeof(upd));
4022         upd.set = sta_flags_nl80211(params->flags);
4023         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4024
4025         /*
4026          * If the driver doesn't support full AP client state, ignore ASSOC/AUTH
4027          * flags, as nl80211 driver moves a new station, by default, into
4028          * associated state.
4029          *
4030          * On the other hand, if the driver supports that feature and the
4031          * station is added in unauthenticated state, set the
4032          * authenticated/associated bits in the mask to prevent moving this
4033          * station to associated state before it is actually associated.
4034          *
4035          * This is irrelevant for mesh mode where the station is added to the
4036          * driver as authenticated already, and ASSOCIATED isn't part of the
4037          * nl80211 API.
4038          */
4039         if (!is_mesh_interface(drv->nlmode)) {
4040                 if (!FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags)) {
4041                         wpa_printf(MSG_DEBUG,
4042                                    "nl80211: Ignore ASSOC/AUTH flags since driver doesn't support full AP client state");
4043                         upd.mask &= ~(BIT(NL80211_STA_FLAG_ASSOCIATED) |
4044                                       BIT(NL80211_STA_FLAG_AUTHENTICATED));
4045                 } else if (!params->set &&
4046                            !(params->flags & WPA_STA_TDLS_PEER)) {
4047                         if (!(params->flags & WPA_STA_AUTHENTICATED))
4048                                 upd.mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4049                         if (!(params->flags & WPA_STA_ASSOCIATED))
4050                                 upd.mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
4051                 }
4052 #ifdef CONFIG_MESH
4053         } else {
4054                 if (params->plink_state == PLINK_ESTAB && params->peer_aid) {
4055                         ret = nla_put_u16(msg, NL80211_ATTR_MESH_PEER_AID,
4056                                           params->peer_aid);
4057                         if (ret)
4058                                 goto fail;
4059                 }
4060 #endif /* CONFIG_MESH */
4061         }
4062
4063         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
4064                    upd.set, upd.mask);
4065         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4066                 goto fail;
4067
4068 #ifdef CONFIG_MESH
4069         if (params->plink_state &&
4070             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
4071                        sta_plink_state_nl80211(params->plink_state)))
4072                 goto fail;
4073 #endif /* CONFIG_MESH */
4074
4075         if (params->flags & WPA_STA_WMM) {
4076                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4077
4078                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
4079                 if (!wme ||
4080                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4081                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
4082                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
4083                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4084                                WMM_QOSINFO_STA_SP_MASK))
4085                         goto fail;
4086                 nla_nest_end(msg, wme);
4087         }
4088
4089         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4090         msg = NULL;
4091         if (ret)
4092                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4093                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4094                            strerror(-ret));
4095         if (ret == -EEXIST)
4096                 ret = 0;
4097 fail:
4098         nlmsg_free(msg);
4099         return ret;
4100 }
4101
4102
4103 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4104 {
4105 #ifdef CONFIG_LIBNL3_ROUTE
4106         struct wpa_driver_nl80211_data *drv = bss->drv;
4107         struct rtnl_neigh *rn;
4108         struct nl_addr *nl_addr;
4109         int err;
4110
4111         rn = rtnl_neigh_alloc();
4112         if (!rn)
4113                 return;
4114
4115         rtnl_neigh_set_family(rn, AF_BRIDGE);
4116         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4117         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4118         if (!nl_addr) {
4119                 rtnl_neigh_put(rn);
4120                 return;
4121         }
4122         rtnl_neigh_set_lladdr(rn, nl_addr);
4123
4124         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4125         if (err < 0) {
4126                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4127                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4128                            bss->ifindex, nl_geterror(err));
4129         } else {
4130                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4131                            MACSTR, MAC2STR(addr));
4132         }
4133
4134         nl_addr_put(nl_addr);
4135         rtnl_neigh_put(rn);
4136 #endif /* CONFIG_LIBNL3_ROUTE */
4137 }
4138
4139
4140 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4141                                          int deauth, u16 reason_code)
4142 {
4143         struct wpa_driver_nl80211_data *drv = bss->drv;
4144         struct nl_msg *msg;
4145         int ret;
4146
4147         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
4148             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
4149             (deauth == 0 &&
4150              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4151                         WLAN_FC_STYPE_DISASSOC)) ||
4152             (deauth == 1 &&
4153              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4154                         WLAN_FC_STYPE_DEAUTH)) ||
4155             (reason_code &&
4156              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
4157                 nlmsg_free(msg);
4158                 return -ENOBUFS;
4159         }
4160
4161         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4162         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4163                    " --> %d (%s)",
4164                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4165
4166         if (drv->rtnl_sk)
4167                 rtnl_neigh_delete_fdb_entry(bss, addr);
4168
4169         if (ret == -ENOENT)
4170                 return 0;
4171         return ret;
4172 }
4173
4174
4175 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4176 {
4177         struct nl_msg *msg;
4178         struct wpa_driver_nl80211_data *drv2;
4179
4180         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4181
4182         /* stop listening for EAPOL on this interface */
4183         dl_list_for_each(drv2, &drv->global->interfaces,
4184                          struct wpa_driver_nl80211_data, list)
4185         {
4186                 del_ifidx(drv2, ifidx, IFIDX_ANY);
4187                 /* Remove all bridges learned for this iface */
4188                 del_ifidx(drv2, IFIDX_ANY, ifidx);
4189         }
4190
4191         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
4192         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4193                 return;
4194         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4195 }
4196
4197
4198 const char * nl80211_iftype_str(enum nl80211_iftype mode)
4199 {
4200         switch (mode) {
4201         case NL80211_IFTYPE_ADHOC:
4202                 return "ADHOC";
4203         case NL80211_IFTYPE_STATION:
4204                 return "STATION";
4205         case NL80211_IFTYPE_AP:
4206                 return "AP";
4207         case NL80211_IFTYPE_AP_VLAN:
4208                 return "AP_VLAN";
4209         case NL80211_IFTYPE_WDS:
4210                 return "WDS";
4211         case NL80211_IFTYPE_MONITOR:
4212                 return "MONITOR";
4213         case NL80211_IFTYPE_MESH_POINT:
4214                 return "MESH_POINT";
4215         case NL80211_IFTYPE_P2P_CLIENT:
4216                 return "P2P_CLIENT";
4217         case NL80211_IFTYPE_P2P_GO:
4218                 return "P2P_GO";
4219         case NL80211_IFTYPE_P2P_DEVICE:
4220                 return "P2P_DEVICE";
4221         default:
4222                 return "unknown";
4223         }
4224 }
4225
4226
4227 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4228                                      const char *ifname,
4229                                      enum nl80211_iftype iftype,
4230                                      const u8 *addr, int wds,
4231                                      int (*handler)(struct nl_msg *, void *),
4232                                      void *arg)
4233 {
4234         struct nl_msg *msg;
4235         int ifidx;
4236         int ret = -ENOBUFS;
4237
4238         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4239                    iftype, nl80211_iftype_str(iftype));
4240
4241         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
4242         if (!msg ||
4243             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
4244             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
4245                 goto fail;
4246
4247         if (iftype == NL80211_IFTYPE_MONITOR) {
4248                 struct nlattr *flags;
4249
4250                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4251                 if (!flags ||
4252                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
4253                         goto fail;
4254
4255                 nla_nest_end(msg, flags);
4256         } else if (wds) {
4257                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4258                         goto fail;
4259         }
4260
4261         /*
4262          * Tell cfg80211 that the interface belongs to the socket that created
4263          * it, and the interface should be deleted when the socket is closed.
4264          */
4265         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4266                 goto fail;
4267
4268         ret = send_and_recv_msgs(drv, msg, handler, arg);
4269         msg = NULL;
4270         if (ret) {
4271         fail:
4272                 nlmsg_free(msg);
4273                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4274                            ifname, ret, strerror(-ret));
4275                 return ret;
4276         }
4277
4278         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4279                 return 0;
4280
4281         ifidx = if_nametoindex(ifname);
4282         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4283                    ifname, ifidx);
4284
4285         if (ifidx <= 0)
4286                 return -1;
4287
4288         /*
4289          * Some virtual interfaces need to process EAPOL packets and events on
4290          * the parent interface. This is used mainly with hostapd.
4291          */
4292         if (drv->hostapd ||
4293             iftype == NL80211_IFTYPE_AP_VLAN ||
4294             iftype == NL80211_IFTYPE_WDS ||
4295             iftype == NL80211_IFTYPE_MONITOR) {
4296                 /* start listening for EAPOL on this interface */
4297                 add_ifidx(drv, ifidx, IFIDX_ANY);
4298         }
4299
4300         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4301             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4302                 nl80211_remove_iface(drv, ifidx);
4303                 return -1;
4304         }
4305
4306         return ifidx;
4307 }
4308
4309
4310 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4311                          const char *ifname, enum nl80211_iftype iftype,
4312                          const u8 *addr, int wds,
4313                          int (*handler)(struct nl_msg *, void *),
4314                          void *arg, int use_existing)
4315 {
4316         int ret;
4317
4318         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4319                                         arg);
4320
4321         /* if error occurred and interface exists already */
4322         if (ret == -ENFILE && if_nametoindex(ifname)) {
4323                 if (use_existing) {
4324                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4325                                    ifname);
4326                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4327                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4328                                                addr) < 0 &&
4329                             (linux_set_iface_flags(drv->global->ioctl_sock,
4330                                                    ifname, 0) < 0 ||
4331                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4332                                                 addr) < 0 ||
4333                              linux_set_iface_flags(drv->global->ioctl_sock,
4334                                                    ifname, 1) < 0))
4335                                         return -1;
4336                         return -ENFILE;
4337                 }
4338                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4339
4340                 /* Try to remove the interface that was already there. */
4341                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4342
4343                 /* Try to create the interface again */
4344                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4345                                                 wds, handler, arg);
4346         }
4347
4348         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4349                 wpa_printf(MSG_DEBUG,
4350                            "nl80211: Interface %s created for P2P - disable 11b rates",
4351                            ifname);
4352                 nl80211_disable_11b_rates(drv, ret, 1);
4353         }
4354
4355         return ret;
4356 }
4357
4358
4359 static int nl80211_setup_ap(struct i802_bss *bss)
4360 {
4361         struct wpa_driver_nl80211_data *drv = bss->drv;
4362
4363         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4364                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4365
4366         /*
4367          * Disable Probe Request reporting unless we need it in this way for
4368          * devices that include the AP SME, in the other case (unless using
4369          * monitor iface) we'll get it through the nl_mgmt socket instead.
4370          */
4371         if (!drv->device_ap_sme)
4372                 wpa_driver_nl80211_probe_req_report(bss, 0);
4373
4374         if (!drv->device_ap_sme && !drv->use_monitor)
4375                 if (nl80211_mgmt_subscribe_ap(bss))
4376                         return -1;
4377
4378         if (drv->device_ap_sme && !drv->use_monitor)
4379                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4380                         wpa_printf(MSG_DEBUG,
4381                                    "nl80211: Failed to subscribe for mgmt frames from SME driver - trying to run without it");
4382
4383         if (!drv->device_ap_sme && drv->use_monitor &&
4384             nl80211_create_monitor_interface(drv) &&
4385             !drv->device_ap_sme)
4386                 return -1;
4387
4388         if (drv->device_ap_sme &&
4389             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4390                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4391                            "Probe Request frame reporting in AP mode");
4392                 /* Try to survive without this */
4393         }
4394
4395         return 0;
4396 }
4397
4398
4399 static void nl80211_teardown_ap(struct i802_bss *bss)
4400 {
4401         struct wpa_driver_nl80211_data *drv = bss->drv;
4402
4403         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4404                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4405         if (drv->device_ap_sme) {
4406                 wpa_driver_nl80211_probe_req_report(bss, 0);
4407                 if (!drv->use_monitor)
4408                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4409         } else if (drv->use_monitor)
4410                 nl80211_remove_monitor_interface(drv);
4411         else
4412                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4413
4414         bss->beacon_set = 0;
4415 }
4416
4417
4418 static int nl80211_send_eapol_data(struct i802_bss *bss,
4419                                    const u8 *addr, const u8 *data,
4420                                    size_t data_len)
4421 {
4422         struct sockaddr_ll ll;
4423         int ret;
4424
4425         if (bss->drv->eapol_tx_sock < 0) {
4426                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4427                 return -1;
4428         }
4429
4430         os_memset(&ll, 0, sizeof(ll));
4431         ll.sll_family = AF_PACKET;
4432         ll.sll_ifindex = bss->ifindex;
4433         ll.sll_protocol = htons(ETH_P_PAE);
4434         ll.sll_halen = ETH_ALEN;
4435         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4436         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4437                      (struct sockaddr *) &ll, sizeof(ll));
4438         if (ret < 0)
4439                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4440                            strerror(errno));
4441
4442         return ret;
4443 }
4444
4445
4446 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4447
4448 static int wpa_driver_nl80211_hapd_send_eapol(
4449         void *priv, const u8 *addr, const u8 *data,
4450         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4451 {
4452         struct i802_bss *bss = priv;
4453         struct wpa_driver_nl80211_data *drv = bss->drv;
4454         struct ieee80211_hdr *hdr;
4455         size_t len;
4456         u8 *pos;
4457         int res;
4458         int qos = flags & WPA_STA_WMM;
4459
4460         if (drv->device_ap_sme || !drv->use_monitor)
4461                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4462
4463         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4464                 data_len;
4465         hdr = os_zalloc(len);
4466         if (hdr == NULL) {
4467                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4468                            (unsigned long) len);
4469                 return -1;
4470         }
4471
4472         hdr->frame_control =
4473                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4474         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4475         if (encrypt)
4476                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4477         if (qos) {
4478                 hdr->frame_control |=
4479                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4480         }
4481
4482         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4483         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4484         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4485         pos = (u8 *) (hdr + 1);
4486
4487         if (qos) {
4488                 /* Set highest priority in QoS header */
4489                 pos[0] = 7;
4490                 pos[1] = 0;
4491                 pos += 2;
4492         }
4493
4494         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4495         pos += sizeof(rfc1042_header);
4496         WPA_PUT_BE16(pos, ETH_P_PAE);
4497         pos += 2;
4498         memcpy(pos, data, data_len);
4499
4500         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4501                                             0, 0, 0, 0, NULL, 0);
4502         if (res < 0) {
4503                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4504                            "failed: %d (%s)",
4505                            (unsigned long) len, errno, strerror(errno));
4506         }
4507         os_free(hdr);
4508
4509         return res;
4510 }
4511
4512
4513 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4514                                             unsigned int total_flags,
4515                                             unsigned int flags_or,
4516                                             unsigned int flags_and)
4517 {
4518         struct i802_bss *bss = priv;
4519         struct nl_msg *msg;
4520         struct nlattr *flags;
4521         struct nl80211_sta_flag_update upd;
4522
4523         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4524                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4525                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4526                    !!(total_flags & WPA_STA_AUTHORIZED));
4527
4528         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4529             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4530                 goto fail;
4531
4532         /*
4533          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4534          * can be removed eventually.
4535          */
4536         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4537         if (!flags ||
4538             ((total_flags & WPA_STA_AUTHORIZED) &&
4539              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4540             ((total_flags & WPA_STA_WMM) &&
4541              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4542             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4543              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4544             ((total_flags & WPA_STA_MFP) &&
4545              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4546             ((total_flags & WPA_STA_TDLS_PEER) &&
4547              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4548                 goto fail;
4549
4550         nla_nest_end(msg, flags);
4551
4552         os_memset(&upd, 0, sizeof(upd));
4553         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4554         upd.set = sta_flags_nl80211(flags_or);
4555         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4556                 goto fail;
4557
4558         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4559 fail:
4560         nlmsg_free(msg);
4561         return -ENOBUFS;
4562 }
4563
4564
4565 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4566                                  struct wpa_driver_associate_params *params)
4567 {
4568         enum nl80211_iftype nlmode, old_mode;
4569
4570         if (params->p2p) {
4571                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4572                            "group (GO)");
4573                 nlmode = NL80211_IFTYPE_P2P_GO;
4574         } else
4575                 nlmode = NL80211_IFTYPE_AP;
4576
4577         old_mode = drv->nlmode;
4578         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4579                 nl80211_remove_monitor_interface(drv);
4580                 return -1;
4581         }
4582
4583         if (params->freq.freq &&
4584             nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4585                 if (old_mode != nlmode)
4586                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4587                 nl80211_remove_monitor_interface(drv);
4588                 return -1;
4589         }
4590
4591         return 0;
4592 }
4593
4594
4595 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4596                               int reset_mode)
4597 {
4598         struct nl_msg *msg;
4599         int ret;
4600
4601         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4602         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4603         if (ret) {
4604                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4605                            "(%s)", ret, strerror(-ret));
4606         } else {
4607                 wpa_printf(MSG_DEBUG,
4608                            "nl80211: Leave IBSS request sent successfully");
4609         }
4610
4611         if (reset_mode &&
4612             wpa_driver_nl80211_set_mode(drv->first_bss,
4613                                         NL80211_IFTYPE_STATION)) {
4614                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4615                            "station mode");
4616         }
4617
4618         return ret;
4619 }
4620
4621
4622 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4623                                     struct wpa_driver_associate_params *params)
4624 {
4625         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4626                 return -1;
4627
4628         if (params->htcaps && params->htcaps_mask) {
4629                 int sz = sizeof(struct ieee80211_ht_capabilities);
4630                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4631                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4632                             params->htcaps_mask, sz);
4633                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4634                             params->htcaps) ||
4635                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4636                             params->htcaps_mask))
4637                         return -1;
4638         }
4639
4640 #ifdef CONFIG_VHT_OVERRIDES
4641         if (params->disable_vht) {
4642                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4643                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4644                         return -1;
4645         }
4646
4647         if (params->vhtcaps && params->vhtcaps_mask) {
4648                 int sz = sizeof(struct ieee80211_vht_capabilities);
4649                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4650                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4651                             params->vhtcaps_mask, sz);
4652                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4653                             params->vhtcaps) ||
4654                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4655                             params->vhtcaps_mask))
4656                         return -1;
4657         }
4658 #endif /* CONFIG_VHT_OVERRIDES */
4659
4660         return 0;
4661 }
4662
4663
4664 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4665                                    struct wpa_driver_associate_params *params)
4666 {
4667         struct nl_msg *msg;
4668         int ret = -1;
4669         int count = 0;
4670
4671         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4672
4673         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4674                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4675                            "IBSS mode");
4676                 return -1;
4677         }
4678
4679 retry:
4680         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4681             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4682                 goto fail;
4683
4684         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4685                           params->ssid, params->ssid_len);
4686         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4687                 goto fail;
4688         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4689         drv->ssid_len = params->ssid_len;
4690
4691         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4692             nl80211_put_beacon_int(msg, params->beacon_int))
4693                 goto fail;
4694
4695         ret = nl80211_set_conn_keys(params, msg);
4696         if (ret)
4697                 goto fail;
4698
4699         if (params->bssid && params->fixed_bssid) {
4700                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4701                            MAC2STR(params->bssid));
4702                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4703                         goto fail;
4704         }
4705
4706         if (params->fixed_freq) {
4707                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4708                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4709                         goto fail;
4710         }
4711
4712         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4713             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4714             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4715             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4716                 wpa_printf(MSG_DEBUG, "  * control port");
4717                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4718                         goto fail;
4719         }
4720
4721         if (params->wpa_ie) {
4722                 wpa_hexdump(MSG_DEBUG,
4723                             "  * Extra IEs for Beacon/Probe Response frames",
4724                             params->wpa_ie, params->wpa_ie_len);
4725                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4726                             params->wpa_ie))
4727                         goto fail;
4728         }
4729
4730         ret = nl80211_ht_vht_overrides(msg, params);
4731         if (ret < 0)
4732                 goto fail;
4733
4734         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4735         msg = NULL;
4736         if (ret) {
4737                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4738                            ret, strerror(-ret));
4739                 count++;
4740                 if (ret == -EALREADY && count == 1) {
4741                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4742                                    "forced leave");
4743                         nl80211_leave_ibss(drv, 0);
4744                         nlmsg_free(msg);
4745                         goto retry;
4746                 }
4747         } else {
4748                 wpa_printf(MSG_DEBUG,
4749                            "nl80211: Join IBSS request sent successfully");
4750         }
4751
4752 fail:
4753         nlmsg_free(msg);
4754         return ret;
4755 }
4756
4757
4758 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4759                                   struct wpa_driver_associate_params *params,
4760                                   struct nl_msg *msg)
4761 {
4762         if (params->bssid) {
4763                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4764                            MAC2STR(params->bssid));
4765                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4766                         return -1;
4767         }
4768
4769         if (params->bssid_hint) {
4770                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4771                            MAC2STR(params->bssid_hint));
4772                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4773                             params->bssid_hint))
4774                         return -1;
4775         }
4776
4777         if (params->freq.freq) {
4778                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4779                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4780                                 params->freq.freq))
4781                         return -1;
4782                 drv->assoc_freq = params->freq.freq;
4783         } else
4784                 drv->assoc_freq = 0;
4785
4786         if (params->freq_hint) {
4787                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4788                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4789                                 params->freq_hint))
4790                         return -1;
4791         }
4792
4793         if (params->bg_scan_period >= 0) {
4794                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4795                            params->bg_scan_period);
4796                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4797                                 params->bg_scan_period))
4798                         return -1;
4799         }
4800
4801         if (params->ssid) {
4802                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4803                                   params->ssid, params->ssid_len);
4804                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4805                             params->ssid))
4806                         return -1;
4807                 if (params->ssid_len > sizeof(drv->ssid))
4808                         return -1;
4809                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4810                 drv->ssid_len = params->ssid_len;
4811         }
4812
4813         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4814         if (params->wpa_ie &&
4815             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4816                 return -1;
4817
4818         if (params->wpa_proto) {
4819                 enum nl80211_wpa_versions ver = 0;
4820
4821                 if (params->wpa_proto & WPA_PROTO_WPA)
4822                         ver |= NL80211_WPA_VERSION_1;
4823                 if (params->wpa_proto & WPA_PROTO_RSN)
4824                         ver |= NL80211_WPA_VERSION_2;
4825
4826                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4827                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4828                         return -1;
4829         }
4830
4831         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4832                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4833                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4834                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4835                                 cipher))
4836                         return -1;
4837         }
4838
4839         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4840             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4841                 /*
4842                  * This is likely to work even though many drivers do not
4843                  * advertise support for operations without GTK.
4844                  */
4845                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4846         } else if (params->group_suite != WPA_CIPHER_NONE) {
4847                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4848                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4849                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4850                         return -1;
4851         }
4852
4853         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4854             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4855             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4856             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4857             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4858             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4859             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4860             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4861             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4862             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4863                 int mgmt = WLAN_AKM_SUITE_PSK;
4864
4865                 switch (params->key_mgmt_suite) {
4866                 case WPA_KEY_MGMT_CCKM:
4867                         mgmt = WLAN_AKM_SUITE_CCKM;
4868                         break;
4869                 case WPA_KEY_MGMT_IEEE8021X:
4870                         mgmt = WLAN_AKM_SUITE_8021X;
4871                         break;
4872                 case WPA_KEY_MGMT_FT_IEEE8021X:
4873                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4874                         break;
4875                 case WPA_KEY_MGMT_FT_PSK:
4876                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4877                         break;
4878                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4879                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4880                         break;
4881                 case WPA_KEY_MGMT_PSK_SHA256:
4882                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4883                         break;
4884                 case WPA_KEY_MGMT_OSEN:
4885                         mgmt = WLAN_AKM_SUITE_OSEN;
4886                         break;
4887                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4888                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4889                         break;
4890                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4891                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4892                         break;
4893                 case WPA_KEY_MGMT_PSK:
4894                 default:
4895                         mgmt = WLAN_AKM_SUITE_PSK;
4896                         break;
4897                 }
4898                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4899                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4900                         return -1;
4901         }
4902
4903         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4904                 return -1;
4905
4906         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4907             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4908                 return -1;
4909
4910         if (params->rrm_used) {
4911                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4912                 if ((!((drv_rrm_flags &
4913                         WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
4914                        (drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
4915                      !(drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) ||
4916                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4917                         return -1;
4918         }
4919
4920         if (nl80211_ht_vht_overrides(msg, params) < 0)
4921                 return -1;
4922
4923         if (params->p2p)
4924                 wpa_printf(MSG_DEBUG, "  * P2P group");
4925
4926         if (params->pbss) {
4927                 wpa_printf(MSG_DEBUG, "  * PBSS");
4928                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
4929                         return -1;
4930         }
4931
4932         drv->connect_reassoc = 0;
4933         if (params->prev_bssid) {
4934                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4935                            MAC2STR(params->prev_bssid));
4936                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4937                             params->prev_bssid))
4938                         return -1;
4939                 drv->connect_reassoc = 1;
4940         }
4941
4942         return 0;
4943 }
4944
4945
4946 static int wpa_driver_nl80211_try_connect(
4947         struct wpa_driver_nl80211_data *drv,
4948         struct wpa_driver_associate_params *params)
4949 {
4950         struct nl_msg *msg;
4951         enum nl80211_auth_type type;
4952         int ret;
4953         int algs;
4954
4955 #ifdef CONFIG_DRIVER_NL80211_QCA
4956         if (params->req_key_mgmt_offload && params->psk &&
4957             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4958              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4959              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4960                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4961                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4962                 if (ret)
4963                         return ret;
4964         }
4965 #endif /* CONFIG_DRIVER_NL80211_QCA */
4966
4967         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4968         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4969         if (!msg)
4970                 return -1;
4971
4972         ret = nl80211_connect_common(drv, params, msg);
4973         if (ret)
4974                 goto fail;
4975
4976         algs = 0;
4977         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4978                 algs++;
4979         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4980                 algs++;
4981         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4982                 algs++;
4983         if (algs > 1) {
4984                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4985                            "selection");
4986                 goto skip_auth_type;
4987         }
4988
4989         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4990                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4991         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4992                 type = NL80211_AUTHTYPE_SHARED_KEY;
4993         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4994                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4995         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4996                 type = NL80211_AUTHTYPE_FT;
4997         else
4998                 goto fail;
4999
5000         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5001         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
5002                 goto fail;
5003
5004 skip_auth_type:
5005         ret = nl80211_set_conn_keys(params, msg);
5006         if (ret)
5007                 goto fail;
5008
5009         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5010         msg = NULL;
5011         if (ret) {
5012                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5013                            "(%s)", ret, strerror(-ret));
5014         } else {
5015                 wpa_printf(MSG_DEBUG,
5016                            "nl80211: Connect request send successfully");
5017         }
5018
5019 fail:
5020         nlmsg_free(msg);
5021         return ret;
5022
5023 }
5024
5025
5026 static int wpa_driver_nl80211_connect(
5027         struct wpa_driver_nl80211_data *drv,
5028         struct wpa_driver_associate_params *params)
5029 {
5030         int ret;
5031
5032         /* Store the connection attempted bssid for future use */
5033         if (params->bssid)
5034                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5035         else
5036                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5037
5038         ret = wpa_driver_nl80211_try_connect(drv, params);
5039         if (ret == -EALREADY) {
5040                 /*
5041                  * cfg80211 does not currently accept new connections if
5042                  * we are already connected. As a workaround, force
5043                  * disconnection and try again.
5044                  */
5045                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5046                            "disconnecting before reassociation "
5047                            "attempt");
5048                 if (wpa_driver_nl80211_disconnect(
5049                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5050                         return -1;
5051                 ret = wpa_driver_nl80211_try_connect(drv, params);
5052         }
5053         return ret;
5054 }
5055
5056
5057 static int wpa_driver_nl80211_associate(
5058         void *priv, struct wpa_driver_associate_params *params)
5059 {
5060         struct i802_bss *bss = priv;
5061         struct wpa_driver_nl80211_data *drv = bss->drv;
5062         int ret = -1;
5063         struct nl_msg *msg;
5064
5065         nl80211_unmask_11b_rates(bss);
5066
5067         if (params->mode == IEEE80211_MODE_AP)
5068                 return wpa_driver_nl80211_ap(drv, params);
5069
5070         if (params->mode == IEEE80211_MODE_IBSS)
5071                 return wpa_driver_nl80211_ibss(drv, params);
5072
5073         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5074                 enum nl80211_iftype nlmode = params->p2p ?
5075                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5076
5077                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5078                         return -1;
5079                 return wpa_driver_nl80211_connect(drv, params);
5080         }
5081
5082         nl80211_mark_disconnected(drv);
5083
5084         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5085                    drv->ifindex);
5086         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
5087         if (!msg)
5088                 return -1;
5089
5090         ret = nl80211_connect_common(drv, params, msg);
5091         if (ret)
5092                 goto fail;
5093
5094         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5095         msg = NULL;
5096         if (ret) {
5097                 wpa_dbg(drv->ctx, MSG_DEBUG,
5098                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
5099                         ret, strerror(-ret));
5100                 nl80211_dump_scan(drv);
5101         } else {
5102                 wpa_printf(MSG_DEBUG,
5103                            "nl80211: Association request send successfully");
5104         }
5105
5106 fail:
5107         nlmsg_free(msg);
5108         return ret;
5109 }
5110
5111
5112 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5113                             int ifindex, enum nl80211_iftype mode)
5114 {
5115         struct nl_msg *msg;
5116         int ret = -ENOBUFS;
5117
5118         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5119                    ifindex, mode, nl80211_iftype_str(mode));
5120
5121         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
5122         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
5123                 goto fail;
5124
5125         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5126         msg = NULL;
5127         if (!ret)
5128                 return 0;
5129 fail:
5130         nlmsg_free(msg);
5131         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5132                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5133         return ret;
5134 }
5135
5136
5137 static int wpa_driver_nl80211_set_mode_impl(
5138                 struct i802_bss *bss,
5139                 enum nl80211_iftype nlmode,
5140                 struct hostapd_freq_params *desired_freq_params)
5141 {
5142         struct wpa_driver_nl80211_data *drv = bss->drv;
5143         int ret = -1;
5144         int i;
5145         int was_ap = is_ap_interface(drv->nlmode);
5146         int res;
5147         int mode_switch_res;
5148
5149         if (TEST_FAIL())
5150                 return -1;
5151
5152         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5153         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5154                 mode_switch_res = 0;
5155
5156         if (mode_switch_res == 0) {
5157                 drv->nlmode = nlmode;
5158                 ret = 0;
5159                 goto done;
5160         }
5161
5162         if (mode_switch_res == -ENODEV)
5163                 return -1;
5164
5165         if (nlmode == drv->nlmode) {
5166                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5167                            "requested mode - ignore error");
5168                 ret = 0;
5169                 goto done; /* Already in the requested mode */
5170         }
5171
5172         /* mac80211 doesn't allow mode changes while the device is up, so
5173          * take the device down, try to set the mode again, and bring the
5174          * device back up.
5175          */
5176         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5177                    "interface down");
5178         for (i = 0; i < 10; i++) {
5179                 res = i802_set_iface_flags(bss, 0);
5180                 if (res == -EACCES || res == -ENODEV)
5181                         break;
5182                 if (res != 0) {
5183                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5184                                    "interface down");
5185                         os_sleep(0, 100000);
5186                         continue;
5187                 }
5188
5189                 /*
5190                  * Setting the mode will fail for some drivers if the phy is
5191                  * on a frequency that the mode is disallowed in.
5192                  */
5193                 if (desired_freq_params) {
5194                         res = nl80211_set_channel(bss, desired_freq_params, 0);
5195                         if (res) {
5196                                 wpa_printf(MSG_DEBUG,
5197                                            "nl80211: Failed to set frequency on interface");
5198                         }
5199                 }
5200
5201                 /* Try to set the mode again while the interface is down */
5202                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5203                 if (mode_switch_res == -EBUSY) {
5204                         wpa_printf(MSG_DEBUG,
5205                                    "nl80211: Delaying mode set while interface going down");
5206                         os_sleep(0, 100000);
5207                         continue;
5208                 }
5209                 ret = mode_switch_res;
5210                 break;
5211         }
5212
5213         if (!ret) {
5214                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5215                            "interface is down");
5216                 drv->nlmode = nlmode;
5217                 drv->ignore_if_down_event = 1;
5218         }
5219
5220         /* Bring the interface back up */
5221         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5222         if (res != 0) {
5223                 wpa_printf(MSG_DEBUG,
5224                            "nl80211: Failed to set interface up after switching mode");
5225                 ret = -1;
5226         }
5227
5228 done:
5229         if (ret) {
5230                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5231                            "from %d failed", nlmode, drv->nlmode);
5232                 return ret;
5233         }
5234
5235         if (is_p2p_net_interface(nlmode)) {
5236                 wpa_printf(MSG_DEBUG,
5237                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
5238                            bss->ifname);
5239                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5240         } else if (drv->disabled_11b_rates) {
5241                 wpa_printf(MSG_DEBUG,
5242                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
5243                            bss->ifname);
5244                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5245         }
5246
5247         if (is_ap_interface(nlmode)) {
5248                 nl80211_mgmt_unsubscribe(bss, "start AP");
5249                 /* Setup additional AP mode functionality if needed */
5250                 if (nl80211_setup_ap(bss))
5251                         return -1;
5252         } else if (was_ap) {
5253                 /* Remove additional AP mode functionality */
5254                 nl80211_teardown_ap(bss);
5255         } else {
5256                 nl80211_mgmt_unsubscribe(bss, "mode change");
5257         }
5258
5259         if (is_mesh_interface(nlmode) &&
5260             nl80211_mgmt_subscribe_mesh(bss))
5261                 return -1;
5262
5263         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5264             !is_mesh_interface(nlmode) &&
5265             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5266                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5267                            "frame processing - ignore for now");
5268
5269         return 0;
5270 }
5271
5272
5273 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5274                                 enum nl80211_iftype nlmode)
5275 {
5276         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5277 }
5278
5279
5280 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5281                                             struct hostapd_freq_params *freq)
5282 {
5283         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5284                                                 freq);
5285 }
5286
5287
5288 static int wpa_driver_nl80211_get_capa(void *priv,
5289                                        struct wpa_driver_capa *capa)
5290 {
5291         struct i802_bss *bss = priv;
5292         struct wpa_driver_nl80211_data *drv = bss->drv;
5293
5294         if (!drv->has_capability)
5295                 return -1;
5296         os_memcpy(capa, &drv->capa, sizeof(*capa));
5297         if (drv->extended_capa && drv->extended_capa_mask) {
5298                 capa->extended_capa = drv->extended_capa;
5299                 capa->extended_capa_mask = drv->extended_capa_mask;
5300                 capa->extended_capa_len = drv->extended_capa_len;
5301         }
5302
5303         return 0;
5304 }
5305
5306
5307 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5308 {
5309         struct i802_bss *bss = priv;
5310         struct wpa_driver_nl80211_data *drv = bss->drv;
5311
5312         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5313                    bss->ifname, drv->operstate, state,
5314                    state ? "UP" : "DORMANT");
5315         drv->operstate = state;
5316         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5317                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5318 }
5319
5320
5321 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5322 {
5323         struct i802_bss *bss = priv;
5324         struct wpa_driver_nl80211_data *drv = bss->drv;
5325         struct nl_msg *msg;
5326         struct nl80211_sta_flag_update upd;
5327         int ret;
5328
5329         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5330                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5331                 return 0;
5332         }
5333
5334         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5335                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5336
5337         os_memset(&upd, 0, sizeof(upd));
5338         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5339         if (authorized)
5340                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5341
5342         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5343             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5344             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5345                 nlmsg_free(msg);
5346                 return -ENOBUFS;
5347         }
5348
5349         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5350         if (!ret)
5351                 return 0;
5352         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5353                    ret, strerror(-ret));
5354         return ret;
5355 }
5356
5357
5358 /* Set kernel driver on given frequency (MHz) */
5359 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5360 {
5361         struct i802_bss *bss = priv;
5362         return nl80211_set_channel(bss, freq, 0);
5363 }
5364
5365
5366 static inline int min_int(int a, int b)
5367 {
5368         if (a < b)
5369                 return a;
5370         return b;
5371 }
5372
5373
5374 static int get_key_handler(struct nl_msg *msg, void *arg)
5375 {
5376         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5377         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5378
5379         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5380                   genlmsg_attrlen(gnlh, 0), NULL);
5381
5382         /*
5383          * TODO: validate the key index and mac address!
5384          * Otherwise, there's a race condition as soon as
5385          * the kernel starts sending key notifications.
5386          */
5387
5388         if (tb[NL80211_ATTR_KEY_SEQ])
5389                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5390                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5391         return NL_SKIP;
5392 }
5393
5394
5395 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5396                            int idx, u8 *seq)
5397 {
5398         struct i802_bss *bss = priv;
5399         struct wpa_driver_nl80211_data *drv = bss->drv;
5400         struct nl_msg *msg;
5401
5402         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5403                                   NL80211_CMD_GET_KEY);
5404         if (!msg ||
5405             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5406             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5407                 nlmsg_free(msg);
5408                 return -ENOBUFS;
5409         }
5410
5411         memset(seq, 0, 6);
5412
5413         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5414 }
5415
5416
5417 static int i802_set_rts(void *priv, int rts)
5418 {
5419         struct i802_bss *bss = priv;
5420         struct wpa_driver_nl80211_data *drv = bss->drv;
5421         struct nl_msg *msg;
5422         int ret;
5423         u32 val;
5424
5425         if (rts >= 2347)
5426                 val = (u32) -1;
5427         else
5428                 val = rts;
5429
5430         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5431             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5432                 nlmsg_free(msg);
5433                 return -ENOBUFS;
5434         }
5435
5436         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5437         if (!ret)
5438                 return 0;
5439         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5440                    "%d (%s)", rts, ret, strerror(-ret));
5441         return ret;
5442 }
5443
5444
5445 static int i802_set_frag(void *priv, int frag)
5446 {
5447         struct i802_bss *bss = priv;
5448         struct wpa_driver_nl80211_data *drv = bss->drv;
5449         struct nl_msg *msg;
5450         int ret;
5451         u32 val;
5452
5453         if (frag >= 2346)
5454                 val = (u32) -1;
5455         else
5456                 val = frag;
5457
5458         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5459             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5460                 nlmsg_free(msg);
5461                 return -ENOBUFS;
5462         }
5463
5464         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5465         if (!ret)
5466                 return 0;
5467         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5468                    "%d: %d (%s)", frag, ret, strerror(-ret));
5469         return ret;
5470 }
5471
5472
5473 static int i802_flush(void *priv)
5474 {
5475         struct i802_bss *bss = priv;
5476         struct nl_msg *msg;
5477         int res;
5478
5479         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5480                    bss->ifname);
5481
5482         /*
5483          * XXX: FIX! this needs to flush all VLANs too
5484          */
5485         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5486         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5487         if (res) {
5488                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5489                            "(%s)", res, strerror(-res));
5490         }
5491         return res;
5492 }
5493
5494
5495 static int get_sta_handler(struct nl_msg *msg, void *arg)
5496 {
5497         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5498         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5499         struct hostap_sta_driver_data *data = arg;
5500         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5501         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5502                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5503                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5504                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5505                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5506                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5507                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5508                 [NL80211_STA_INFO_RX_BYTES64] = { .type = NLA_U64 },
5509                 [NL80211_STA_INFO_TX_BYTES64] = { .type = NLA_U64 },
5510         };
5511
5512         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5513                   genlmsg_attrlen(gnlh, 0), NULL);
5514
5515         /*
5516          * TODO: validate the interface and mac address!
5517          * Otherwise, there's a race condition as soon as
5518          * the kernel starts sending station notifications.
5519          */
5520
5521         if (!tb[NL80211_ATTR_STA_INFO]) {
5522                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5523                 return NL_SKIP;
5524         }
5525         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5526                              tb[NL80211_ATTR_STA_INFO],
5527                              stats_policy)) {
5528                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5529                 return NL_SKIP;
5530         }
5531
5532         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5533                 data->inactive_msec =
5534                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5535         /* For backwards compatibility, fetch the 32-bit counters first. */
5536         if (stats[NL80211_STA_INFO_RX_BYTES])
5537                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5538         if (stats[NL80211_STA_INFO_TX_BYTES])
5539                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5540         if (stats[NL80211_STA_INFO_RX_BYTES64] &&
5541             stats[NL80211_STA_INFO_TX_BYTES64]) {
5542                 /*
5543                  * The driver supports 64-bit counters, so use them to override
5544                  * the 32-bit values.
5545                  */
5546                 data->rx_bytes =
5547                         nla_get_u64(stats[NL80211_STA_INFO_RX_BYTES64]);
5548                 data->tx_bytes =
5549                         nla_get_u64(stats[NL80211_STA_INFO_TX_BYTES64]);
5550                 data->bytes_64bit = 1;
5551         }
5552         if (stats[NL80211_STA_INFO_RX_PACKETS])
5553                 data->rx_packets =
5554                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5555         if (stats[NL80211_STA_INFO_TX_PACKETS])
5556                 data->tx_packets =
5557                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5558         if (stats[NL80211_STA_INFO_TX_FAILED])
5559                 data->tx_retry_failed =
5560                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5561
5562         return NL_SKIP;
5563 }
5564
5565 static int i802_read_sta_data(struct i802_bss *bss,
5566                               struct hostap_sta_driver_data *data,
5567                               const u8 *addr)
5568 {
5569         struct nl_msg *msg;
5570
5571         os_memset(data, 0, sizeof(*data));
5572
5573         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5574             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5575                 nlmsg_free(msg);
5576                 return -ENOBUFS;
5577         }
5578
5579         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5580 }
5581
5582
5583 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5584                                     int cw_min, int cw_max, int burst_time)
5585 {
5586         struct i802_bss *bss = priv;
5587         struct wpa_driver_nl80211_data *drv = bss->drv;
5588         struct nl_msg *msg;
5589         struct nlattr *txq, *params;
5590
5591         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5592         if (!msg)
5593                 return -1;
5594
5595         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5596         if (!txq)
5597                 goto fail;
5598
5599         /* We are only sending parameters for a single TXQ at a time */
5600         params = nla_nest_start(msg, 1);
5601         if (!params)
5602                 goto fail;
5603
5604         switch (queue) {
5605         case 0:
5606                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5607                         goto fail;
5608                 break;
5609         case 1:
5610                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5611                         goto fail;
5612                 break;
5613         case 2:
5614                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5615                         goto fail;
5616                 break;
5617         case 3:
5618                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5619                         goto fail;
5620                 break;
5621         }
5622         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5623          * 32 usec, so need to convert the value here. */
5624         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5625                         (burst_time * 100 + 16) / 32) ||
5626             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5627             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5628             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5629                 goto fail;
5630
5631         nla_nest_end(msg, params);
5632
5633         nla_nest_end(msg, txq);
5634
5635         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5636                 return 0;
5637         msg = NULL;
5638 fail:
5639         nlmsg_free(msg);
5640         return -1;
5641 }
5642
5643
5644 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5645                              const char *ifname, int vlan_id)
5646 {
5647         struct wpa_driver_nl80211_data *drv = bss->drv;
5648         struct nl_msg *msg;
5649         int ret;
5650
5651         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5652                    ", ifname=%s[%d], vlan_id=%d)",
5653                    bss->ifname, if_nametoindex(bss->ifname),
5654                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5655         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5656             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5657             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5658                 nlmsg_free(msg);
5659                 return -ENOBUFS;
5660         }
5661
5662         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5663         if (ret < 0) {
5664                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5665                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5666                            MAC2STR(addr), ifname, vlan_id, ret,
5667                            strerror(-ret));
5668         }
5669         return ret;
5670 }
5671
5672
5673 static int i802_get_inact_sec(void *priv, const u8 *addr)
5674 {
5675         struct hostap_sta_driver_data data;
5676         int ret;
5677
5678         data.inactive_msec = (unsigned long) -1;
5679         ret = i802_read_sta_data(priv, &data, addr);
5680         if (ret == -ENOENT)
5681                 return -ENOENT;
5682         if (ret || data.inactive_msec == (unsigned long) -1)
5683                 return -1;
5684         return data.inactive_msec / 1000;
5685 }
5686
5687
5688 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5689 {
5690 #if 0
5691         /* TODO */
5692 #endif
5693         return 0;
5694 }
5695
5696
5697 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5698                            int reason)
5699 {
5700         struct i802_bss *bss = priv;
5701         struct wpa_driver_nl80211_data *drv = bss->drv;
5702         struct ieee80211_mgmt mgmt;
5703
5704         if (is_mesh_interface(drv->nlmode))
5705                 return -1;
5706
5707         if (drv->device_ap_sme)
5708                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5709
5710         memset(&mgmt, 0, sizeof(mgmt));
5711         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5712                                           WLAN_FC_STYPE_DEAUTH);
5713         memcpy(mgmt.da, addr, ETH_ALEN);
5714         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5715         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5716         mgmt.u.deauth.reason_code = host_to_le16(reason);
5717         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5718                                             IEEE80211_HDRLEN +
5719                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5720                                             0, NULL, 0);
5721 }
5722
5723
5724 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5725                              int reason)
5726 {
5727         struct i802_bss *bss = priv;
5728         struct wpa_driver_nl80211_data *drv = bss->drv;
5729         struct ieee80211_mgmt mgmt;
5730
5731         if (is_mesh_interface(drv->nlmode))
5732                 return -1;
5733
5734         if (drv->device_ap_sme)
5735                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5736
5737         memset(&mgmt, 0, sizeof(mgmt));
5738         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5739                                           WLAN_FC_STYPE_DISASSOC);
5740         memcpy(mgmt.da, addr, ETH_ALEN);
5741         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5742         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5743         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5744         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5745                                             IEEE80211_HDRLEN +
5746                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5747                                             0, NULL, 0);
5748 }
5749
5750
5751 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5752 {
5753         char buf[200], *pos, *end;
5754         int i, res;
5755
5756         pos = buf;
5757         end = pos + sizeof(buf);
5758
5759         for (i = 0; i < drv->num_if_indices; i++) {
5760                 if (!drv->if_indices[i])
5761                         continue;
5762                 res = os_snprintf(pos, end - pos, " %d(%d)",
5763                                   drv->if_indices[i],
5764                                   drv->if_indices_reason[i]);
5765                 if (os_snprintf_error(end - pos, res))
5766                         break;
5767                 pos += res;
5768         }
5769         *pos = '\0';
5770
5771         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5772                    drv->num_if_indices, buf);
5773 }
5774
5775
5776 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5777                       int ifidx_reason)
5778 {
5779         int i;
5780         int *old, *old_reason;
5781
5782         wpa_printf(MSG_DEBUG,
5783                    "nl80211: Add own interface ifindex %d (ifidx_reason %d)",
5784                    ifidx, ifidx_reason);
5785         if (have_ifidx(drv, ifidx, ifidx_reason)) {
5786                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5787                            ifidx);
5788                 return;
5789         }
5790         for (i = 0; i < drv->num_if_indices; i++) {
5791                 if (drv->if_indices[i] == 0) {
5792                         drv->if_indices[i] = ifidx;
5793                         drv->if_indices_reason[i] = ifidx_reason;
5794                         dump_ifidx(drv);
5795                         return;
5796                 }
5797         }
5798
5799         if (drv->if_indices != drv->default_if_indices)
5800                 old = drv->if_indices;
5801         else
5802                 old = NULL;
5803
5804         if (drv->if_indices_reason != drv->default_if_indices_reason)
5805                 old_reason = drv->if_indices_reason;
5806         else
5807                 old_reason = NULL;
5808
5809         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5810                                            sizeof(int));
5811         drv->if_indices_reason = os_realloc_array(old_reason,
5812                                                   drv->num_if_indices + 1,
5813                                                   sizeof(int));
5814         if (!drv->if_indices) {
5815                 if (!old)
5816                         drv->if_indices = drv->default_if_indices;
5817                 else
5818                         drv->if_indices = old;
5819         }
5820         if (!drv->if_indices_reason) {
5821                 if (!old_reason)
5822                         drv->if_indices_reason = drv->default_if_indices_reason;
5823                 else
5824                         drv->if_indices_reason = old_reason;
5825         }
5826         if (!drv->if_indices || !drv->if_indices_reason) {
5827                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5828                            "interfaces");
5829                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5830                 return;
5831         }
5832         if (!old)
5833                 os_memcpy(drv->if_indices, drv->default_if_indices,
5834                           sizeof(drv->default_if_indices));
5835         if (!old_reason)
5836                 os_memcpy(drv->if_indices_reason,
5837                           drv->default_if_indices_reason,
5838                           sizeof(drv->default_if_indices_reason));
5839         drv->if_indices[drv->num_if_indices] = ifidx;
5840         drv->if_indices_reason[drv->num_if_indices] = ifidx_reason;
5841         drv->num_if_indices++;
5842         dump_ifidx(drv);
5843 }
5844
5845
5846 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5847                       int ifidx_reason)
5848 {
5849         int i;
5850
5851         for (i = 0; i < drv->num_if_indices; i++) {
5852                 if ((drv->if_indices[i] == ifidx || ifidx == IFIDX_ANY) &&
5853                     (drv->if_indices_reason[i] == ifidx_reason ||
5854                      ifidx_reason == IFIDX_ANY)) {
5855                         drv->if_indices[i] = 0;
5856                         break;
5857                 }
5858         }
5859         dump_ifidx(drv);
5860 }
5861
5862
5863 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5864                       int ifidx_reason)
5865 {
5866         int i;
5867
5868         for (i = 0; i < drv->num_if_indices; i++)
5869                 if (drv->if_indices[i] == ifidx &&
5870                     (drv->if_indices_reason[i] == ifidx_reason ||
5871                      ifidx_reason == IFIDX_ANY))
5872                         return 1;
5873
5874         return 0;
5875 }
5876
5877
5878 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5879                             const char *bridge_ifname, char *ifname_wds)
5880 {
5881         struct i802_bss *bss = priv;
5882         struct wpa_driver_nl80211_data *drv = bss->drv;
5883         char name[IFNAMSIZ + 1];
5884
5885         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5886         if (ifname_wds)
5887                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5888
5889         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5890                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5891         if (val) {
5892                 if (!if_nametoindex(name)) {
5893                         if (nl80211_create_iface(drv, name,
5894                                                  NL80211_IFTYPE_AP_VLAN,
5895                                                  bss->addr, 1, NULL, NULL, 0) <
5896                             0)
5897                                 return -1;
5898                         if (bridge_ifname &&
5899                             linux_br_add_if(drv->global->ioctl_sock,
5900                                             bridge_ifname, name) < 0)
5901                                 return -1;
5902                 }
5903                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5904                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5905                                    "interface %s up", name);
5906                 }
5907                 return i802_set_sta_vlan(priv, addr, name, 0);
5908         } else {
5909                 if (bridge_ifname)
5910                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5911                                         name);
5912
5913                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5914                 nl80211_remove_iface(drv, if_nametoindex(name));
5915                 return 0;
5916         }
5917 }
5918
5919
5920 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5921 {
5922         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5923         struct sockaddr_ll lladdr;
5924         unsigned char buf[3000];
5925         int len;
5926         socklen_t fromlen = sizeof(lladdr);
5927
5928         len = recvfrom(sock, buf, sizeof(buf), 0,
5929                        (struct sockaddr *)&lladdr, &fromlen);
5930         if (len < 0) {
5931                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5932                            strerror(errno));
5933                 return;
5934         }
5935
5936         if (have_ifidx(drv, lladdr.sll_ifindex, IFIDX_ANY))
5937                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5938 }
5939
5940
5941 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5942                              struct i802_bss *bss,
5943                              const char *brname, const char *ifname)
5944 {
5945         int br_ifindex;
5946         char in_br[IFNAMSIZ];
5947
5948         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5949         br_ifindex = if_nametoindex(brname);
5950         if (br_ifindex == 0) {
5951                 /*
5952                  * Bridge was configured, but the bridge device does
5953                  * not exist. Try to add it now.
5954                  */
5955                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5956                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5957                                    "bridge interface %s: %s",
5958                                    brname, strerror(errno));
5959                         return -1;
5960                 }
5961                 bss->added_bridge = 1;
5962                 br_ifindex = if_nametoindex(brname);
5963                 add_ifidx(drv, br_ifindex, drv->ifindex);
5964         }
5965         bss->br_ifindex = br_ifindex;
5966
5967         if (linux_br_get(in_br, ifname) == 0) {
5968                 if (os_strcmp(in_br, brname) == 0)
5969                         return 0; /* already in the bridge */
5970
5971                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5972                            "bridge %s", ifname, in_br);
5973                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5974                     0) {
5975                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5976                                    "remove interface %s from bridge "
5977                                    "%s: %s",
5978                                    ifname, brname, strerror(errno));
5979                         return -1;
5980                 }
5981         }
5982
5983         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5984                    ifname, brname);
5985         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5986                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5987                            "into bridge %s: %s",
5988                            ifname, brname, strerror(errno));
5989                 return -1;
5990         }
5991         bss->added_if_into_bridge = 1;
5992
5993         return 0;
5994 }
5995
5996
5997 static void *i802_init(struct hostapd_data *hapd,
5998                        struct wpa_init_params *params)
5999 {
6000         struct wpa_driver_nl80211_data *drv;
6001         struct i802_bss *bss;
6002         size_t i;
6003         char master_ifname[IFNAMSIZ];
6004         int ifindex, br_ifindex = 0;
6005         int br_added = 0;
6006
6007         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6008                                           params->global_priv, 1,
6009                                           params->bssid, params->driver_params);
6010         if (bss == NULL)
6011                 return NULL;
6012
6013         drv = bss->drv;
6014
6015         if (linux_br_get(master_ifname, params->ifname) == 0) {
6016                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6017                            params->ifname, master_ifname);
6018                 br_ifindex = if_nametoindex(master_ifname);
6019                 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
6020         } else if ((params->num_bridge == 0 || !params->bridge[0]) &&
6021                    linux_master_get(master_ifname, params->ifname) == 0) {
6022                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in master %s",
6023                         params->ifname, master_ifname);
6024                 /* start listening for EAPOL on the master interface */
6025                 add_ifidx(drv, if_nametoindex(master_ifname), drv->ifindex);
6026
6027                 /* check if master itself is under bridge */
6028                 if (linux_br_get(master_ifname, master_ifname) == 0) {
6029                         wpa_printf(MSG_DEBUG, "nl80211: which is in bridge %s",
6030                                    master_ifname);
6031                         br_ifindex = if_nametoindex(master_ifname);
6032                         os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
6033                 }
6034         } else {
6035                 master_ifname[0] = '\0';
6036         }
6037
6038         bss->br_ifindex = br_ifindex;
6039
6040         for (i = 0; i < params->num_bridge; i++) {
6041                 if (params->bridge[i]) {
6042                         ifindex = if_nametoindex(params->bridge[i]);
6043                         if (ifindex)
6044                                 add_ifidx(drv, ifindex, drv->ifindex);
6045                         if (ifindex == br_ifindex)
6046                                 br_added = 1;
6047                 }
6048         }
6049
6050         /* start listening for EAPOL on the default AP interface */
6051         add_ifidx(drv, drv->ifindex, IFIDX_ANY);
6052
6053         if (params->num_bridge && params->bridge[0]) {
6054                 if (i802_check_bridge(drv, bss, params->bridge[0],
6055                                       params->ifname) < 0)
6056                         goto failed;
6057                 if (os_strcmp(params->bridge[0], master_ifname) != 0)
6058                         br_added = 1;
6059         }
6060
6061         if (!br_added && br_ifindex &&
6062             (params->num_bridge == 0 || !params->bridge[0]))
6063                 add_ifidx(drv, br_ifindex, drv->ifindex);
6064
6065 #ifdef CONFIG_LIBNL3_ROUTE
6066         if (bss->added_if_into_bridge) {
6067                 drv->rtnl_sk = nl_socket_alloc();
6068                 if (drv->rtnl_sk == NULL) {
6069                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6070                         goto failed;
6071                 }
6072
6073                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6074                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6075                                    strerror(errno));
6076                         goto failed;
6077                 }
6078         }
6079 #endif /* CONFIG_LIBNL3_ROUTE */
6080
6081         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6082         if (drv->eapol_sock < 0) {
6083                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6084                            strerror(errno));
6085                 goto failed;
6086         }
6087
6088         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6089         {
6090                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6091                 goto failed;
6092         }
6093
6094         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6095                                params->own_addr))
6096                 goto failed;
6097         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6098
6099         memcpy(bss->addr, params->own_addr, ETH_ALEN);
6100
6101         return bss;
6102
6103 failed:
6104         wpa_driver_nl80211_deinit(bss);
6105         return NULL;
6106 }
6107
6108
6109 static void i802_deinit(void *priv)
6110 {
6111         struct i802_bss *bss = priv;
6112         wpa_driver_nl80211_deinit(bss);
6113 }
6114
6115
6116 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6117         enum wpa_driver_if_type type)
6118 {
6119         switch (type) {
6120         case WPA_IF_STATION:
6121                 return NL80211_IFTYPE_STATION;
6122         case WPA_IF_P2P_CLIENT:
6123         case WPA_IF_P2P_GROUP:
6124                 return NL80211_IFTYPE_P2P_CLIENT;
6125         case WPA_IF_AP_VLAN:
6126                 return NL80211_IFTYPE_AP_VLAN;
6127         case WPA_IF_AP_BSS:
6128                 return NL80211_IFTYPE_AP;
6129         case WPA_IF_P2P_GO:
6130                 return NL80211_IFTYPE_P2P_GO;
6131         case WPA_IF_P2P_DEVICE:
6132                 return NL80211_IFTYPE_P2P_DEVICE;
6133         case WPA_IF_MESH:
6134                 return NL80211_IFTYPE_MESH_POINT;
6135         default:
6136                 return -1;
6137         }
6138 }
6139
6140
6141 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6142 {
6143         struct wpa_driver_nl80211_data *drv;
6144         dl_list_for_each(drv, &global->interfaces,
6145                          struct wpa_driver_nl80211_data, list) {
6146                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6147                         return 1;
6148         }
6149         return 0;
6150 }
6151
6152
6153 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
6154 {
6155         unsigned int idx;
6156
6157         if (!drv->global)
6158                 return -1;
6159
6160         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6161         for (idx = 0; idx < 64; idx++) {
6162                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6163                 new_addr[0] ^= idx << 2;
6164                 if (!nl80211_addr_in_use(drv->global, new_addr))
6165                         break;
6166         }
6167         if (idx == 64)
6168                 return -1;
6169
6170         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
6171                    MACSTR, MAC2STR(new_addr));
6172
6173         return 0;
6174 }
6175
6176
6177 struct wdev_info {
6178         u64 wdev_id;
6179         int wdev_id_set;
6180         u8 macaddr[ETH_ALEN];
6181 };
6182
6183 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6184 {
6185         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6186         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6187         struct wdev_info *wi = arg;
6188
6189         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6190                   genlmsg_attrlen(gnlh, 0), NULL);
6191         if (tb[NL80211_ATTR_WDEV]) {
6192                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6193                 wi->wdev_id_set = 1;
6194         }
6195
6196         if (tb[NL80211_ATTR_MAC])
6197                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6198                           ETH_ALEN);
6199
6200         return NL_SKIP;
6201 }
6202
6203
6204 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6205                                      const char *ifname, const u8 *addr,
6206                                      void *bss_ctx, void **drv_priv,
6207                                      char *force_ifname, u8 *if_addr,
6208                                      const char *bridge, int use_existing,
6209                                      int setup_ap)
6210 {
6211         enum nl80211_iftype nlmode;
6212         struct i802_bss *bss = priv;
6213         struct wpa_driver_nl80211_data *drv = bss->drv;
6214         int ifidx;
6215         int added = 1;
6216
6217         if (addr)
6218                 os_memcpy(if_addr, addr, ETH_ALEN);
6219         nlmode = wpa_driver_nl80211_if_type(type);
6220         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6221                 struct wdev_info p2pdev_info;
6222
6223                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6224                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6225                                              0, nl80211_wdev_handler,
6226                                              &p2pdev_info, use_existing);
6227                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6228                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6229                                    ifname);
6230                         return -1;
6231                 }
6232
6233                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6234                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6235                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6236                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6237                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6238                            ifname,
6239                            (long long unsigned int) p2pdev_info.wdev_id);
6240         } else {
6241                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6242                                              0, NULL, NULL, use_existing);
6243                 if (use_existing && ifidx == -ENFILE) {
6244                         added = 0;
6245                         ifidx = if_nametoindex(ifname);
6246                 } else if (ifidx < 0) {
6247                         return -1;
6248                 }
6249         }
6250
6251         if (!addr) {
6252                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
6253                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6254                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6255                                             ifname, if_addr) < 0) {
6256                         if (added)
6257                                 nl80211_remove_iface(drv, ifidx);
6258                         return -1;
6259                 }
6260         }
6261
6262         if (!addr &&
6263             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6264              type == WPA_IF_P2P_GO || type == WPA_IF_MESH ||
6265              type == WPA_IF_STATION)) {
6266                 /* Enforce unique address */
6267                 u8 new_addr[ETH_ALEN];
6268
6269                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6270                                        new_addr) < 0) {
6271                         if (added)
6272                                 nl80211_remove_iface(drv, ifidx);
6273                         return -1;
6274                 }
6275                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6276                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6277                                    "for interface %s type %d", ifname, type);
6278                         if (nl80211_vif_addr(drv, new_addr) < 0) {
6279                                 if (added)
6280                                         nl80211_remove_iface(drv, ifidx);
6281                                 return -1;
6282                         }
6283                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6284                                                new_addr) < 0) {
6285                                 if (added)
6286                                         nl80211_remove_iface(drv, ifidx);
6287                                 return -1;
6288                         }
6289                 }
6290                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6291         }
6292
6293         if (type == WPA_IF_AP_BSS && setup_ap) {
6294                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6295                 if (new_bss == NULL) {
6296                         if (added)
6297                                 nl80211_remove_iface(drv, ifidx);
6298                         return -1;
6299                 }
6300
6301                 if (bridge &&
6302                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6303                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6304                                    "interface %s to a bridge %s",
6305                                    ifname, bridge);
6306                         if (added)
6307                                 nl80211_remove_iface(drv, ifidx);
6308                         os_free(new_bss);
6309                         return -1;
6310                 }
6311
6312                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6313                 {
6314                         if (added)
6315                                 nl80211_remove_iface(drv, ifidx);
6316                         os_free(new_bss);
6317                         return -1;
6318                 }
6319                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6320                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6321                 new_bss->ifindex = ifidx;
6322                 new_bss->drv = drv;
6323                 new_bss->next = drv->first_bss->next;
6324                 new_bss->freq = drv->first_bss->freq;
6325                 new_bss->ctx = bss_ctx;
6326                 new_bss->added_if = added;
6327                 drv->first_bss->next = new_bss;
6328                 if (drv_priv)
6329                         *drv_priv = new_bss;
6330                 nl80211_init_bss(new_bss);
6331
6332                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6333                 if (nl80211_setup_ap(new_bss))
6334                         return -1;
6335         }
6336
6337         if (drv->global)
6338                 drv->global->if_add_ifindex = ifidx;
6339
6340         /*
6341          * Some virtual interfaces need to process EAPOL packets and events on
6342          * the parent interface. This is used mainly with hostapd.
6343          */
6344         if (ifidx > 0 &&
6345             (drv->hostapd ||
6346              nlmode == NL80211_IFTYPE_AP_VLAN ||
6347              nlmode == NL80211_IFTYPE_WDS ||
6348              nlmode == NL80211_IFTYPE_MONITOR))
6349                 add_ifidx(drv, ifidx, IFIDX_ANY);
6350
6351         return 0;
6352 }
6353
6354
6355 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6356                                         enum wpa_driver_if_type type,
6357                                         const char *ifname)
6358 {
6359         struct wpa_driver_nl80211_data *drv = bss->drv;
6360         int ifindex = if_nametoindex(ifname);
6361
6362         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6363                    __func__, type, ifname, ifindex, bss->added_if);
6364         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6365                 nl80211_remove_iface(drv, ifindex);
6366         else if (ifindex > 0 && !bss->added_if) {
6367                 struct wpa_driver_nl80211_data *drv2;
6368                 dl_list_for_each(drv2, &drv->global->interfaces,
6369                                  struct wpa_driver_nl80211_data, list) {
6370                         del_ifidx(drv2, ifindex, IFIDX_ANY);
6371                         del_ifidx(drv2, IFIDX_ANY, ifindex);
6372                 }
6373         }
6374
6375         if (type != WPA_IF_AP_BSS)
6376                 return 0;
6377
6378         if (bss->added_if_into_bridge) {
6379                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6380                                     bss->ifname) < 0)
6381                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6382                                    "interface %s from bridge %s: %s",
6383                                    bss->ifname, bss->brname, strerror(errno));
6384         }
6385         if (bss->added_bridge) {
6386                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6387                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6388                                    "bridge %s: %s",
6389                                    bss->brname, strerror(errno));
6390         }
6391
6392         if (bss != drv->first_bss) {
6393                 struct i802_bss *tbss;
6394
6395                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6396                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6397                         if (tbss->next == bss) {
6398                                 tbss->next = bss->next;
6399                                 /* Unsubscribe management frames */
6400                                 nl80211_teardown_ap(bss);
6401                                 nl80211_destroy_bss(bss);
6402                                 if (!bss->added_if)
6403                                         i802_set_iface_flags(bss, 0);
6404                                 os_free(bss);
6405                                 bss = NULL;
6406                                 break;
6407                         }
6408                 }
6409                 if (bss)
6410                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6411                                    "BSS %p in the list", __func__, bss);
6412         } else {
6413                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6414                 nl80211_teardown_ap(bss);
6415                 if (!bss->added_if && !drv->first_bss->next)
6416                         wpa_driver_nl80211_del_beacon(drv);
6417                 nl80211_destroy_bss(bss);
6418                 if (!bss->added_if)
6419                         i802_set_iface_flags(bss, 0);
6420                 if (drv->first_bss->next) {
6421                         drv->first_bss = drv->first_bss->next;
6422                         drv->ctx = drv->first_bss->ctx;
6423                         os_free(bss);
6424                 } else {
6425                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6426                 }
6427         }
6428
6429         return 0;
6430 }
6431
6432
6433 static int cookie_handler(struct nl_msg *msg, void *arg)
6434 {
6435         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6436         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6437         u64 *cookie = arg;
6438         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6439                   genlmsg_attrlen(gnlh, 0), NULL);
6440         if (tb[NL80211_ATTR_COOKIE])
6441                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6442         return NL_SKIP;
6443 }
6444
6445
6446 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6447                                   unsigned int freq, unsigned int wait,
6448                                   const u8 *buf, size_t buf_len,
6449                                   u64 *cookie_out, int no_cck, int no_ack,
6450                                   int offchanok, const u16 *csa_offs,
6451                                   size_t csa_offs_len)
6452 {
6453         struct wpa_driver_nl80211_data *drv = bss->drv;
6454         struct nl_msg *msg;
6455         u64 cookie;
6456         int ret = -1;
6457
6458         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6459                    "no_ack=%d offchanok=%d",
6460                    freq, wait, no_cck, no_ack, offchanok);
6461         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6462
6463         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6464             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6465             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6466             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6467                            drv->test_use_roc_tx) &&
6468              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6469             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6470             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6471             (csa_offs && nla_put(msg, NL80211_ATTR_CSA_C_OFFSETS_TX,
6472                                  csa_offs_len * sizeof(u16), csa_offs)) ||
6473             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6474                 goto fail;
6475
6476         cookie = 0;
6477         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6478         msg = NULL;
6479         if (ret) {
6480                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6481                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6482                            freq, wait);
6483         } else {
6484                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6485                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6486                            (long long unsigned int) cookie);
6487
6488                 if (cookie_out)
6489                         *cookie_out = no_ack ? (u64) -1 : cookie;
6490
6491                 if (drv->num_send_action_cookies == MAX_SEND_ACTION_COOKIES) {
6492                         wpa_printf(MSG_DEBUG,
6493                                    "nl80211: Drop oldest pending send action cookie 0x%llx",
6494                                    (long long unsigned int)
6495                                    drv->send_action_cookies[0]);
6496                         os_memmove(&drv->send_action_cookies[0],
6497                                    &drv->send_action_cookies[1],
6498                                    (MAX_SEND_ACTION_COOKIES - 1) *
6499                                    sizeof(u64));
6500                         drv->num_send_action_cookies--;
6501                 }
6502                 drv->send_action_cookies[drv->num_send_action_cookies] = cookie;
6503                 drv->num_send_action_cookies++;
6504         }
6505
6506 fail:
6507         nlmsg_free(msg);
6508         return ret;
6509 }
6510
6511
6512 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6513                                           unsigned int freq,
6514                                           unsigned int wait_time,
6515                                           const u8 *dst, const u8 *src,
6516                                           const u8 *bssid,
6517                                           const u8 *data, size_t data_len,
6518                                           int no_cck)
6519 {
6520         struct wpa_driver_nl80211_data *drv = bss->drv;
6521         int ret = -1;
6522         u8 *buf;
6523         struct ieee80211_hdr *hdr;
6524
6525         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6526                    "freq=%u MHz wait=%d ms no_cck=%d)",
6527                    drv->ifindex, freq, wait_time, no_cck);
6528
6529         buf = os_zalloc(24 + data_len);
6530         if (buf == NULL)
6531                 return ret;
6532         os_memcpy(buf + 24, data, data_len);
6533         hdr = (struct ieee80211_hdr *) buf;
6534         hdr->frame_control =
6535                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6536         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6537         os_memcpy(hdr->addr2, src, ETH_ALEN);
6538         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6539
6540         if (is_ap_interface(drv->nlmode) &&
6541             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6542              (int) freq == bss->freq || drv->device_ap_sme ||
6543              !drv->use_monitor))
6544                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6545                                                    0, freq, no_cck, 1,
6546                                                    wait_time, NULL, 0);
6547         else
6548                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6549                                              24 + data_len,
6550                                              &drv->send_action_cookie,
6551                                              no_cck, 0, 1, NULL, 0);
6552
6553         os_free(buf);
6554         return ret;
6555 }
6556
6557
6558 static void nl80211_frame_wait_cancel(struct i802_bss *bss, u64 cookie)
6559 {
6560         struct wpa_driver_nl80211_data *drv = bss->drv;
6561         struct nl_msg *msg;
6562         int ret;
6563
6564         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6565                    (long long unsigned int) cookie);
6566         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6567             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) {
6568                 nlmsg_free(msg);
6569                 return;
6570         }
6571
6572         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6573         if (ret)
6574                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6575                            "(%s)", ret, strerror(-ret));
6576 }
6577
6578
6579 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6580 {
6581         struct i802_bss *bss = priv;
6582         struct wpa_driver_nl80211_data *drv = bss->drv;
6583         unsigned int i;
6584         u64 cookie;
6585
6586         /* Cancel the last pending TX cookie */
6587         nl80211_frame_wait_cancel(bss, drv->send_action_cookie);
6588
6589         /*
6590          * Cancel the other pending TX cookies, if any. This is needed since
6591          * the driver may keep a list of all pending offchannel TX operations
6592          * and free up the radio only once they have expired or cancelled.
6593          */
6594         for (i = drv->num_send_action_cookies; i > 0; i--) {
6595                 cookie = drv->send_action_cookies[i - 1];
6596                 if (cookie != drv->send_action_cookie)
6597                         nl80211_frame_wait_cancel(bss, cookie);
6598         }
6599         drv->num_send_action_cookies = 0;
6600 }
6601
6602
6603 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6604                                                 unsigned int duration)
6605 {
6606         struct i802_bss *bss = priv;
6607         struct wpa_driver_nl80211_data *drv = bss->drv;
6608         struct nl_msg *msg;
6609         int ret;
6610         u64 cookie;
6611
6612         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6613             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6614             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6615                 nlmsg_free(msg);
6616                 return -1;
6617         }
6618
6619         cookie = 0;
6620         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6621         if (ret == 0) {
6622                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6623                            "0x%llx for freq=%u MHz duration=%u",
6624                            (long long unsigned int) cookie, freq, duration);
6625                 drv->remain_on_chan_cookie = cookie;
6626                 drv->pending_remain_on_chan = 1;
6627                 return 0;
6628         }
6629         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6630                    "(freq=%d duration=%u): %d (%s)",
6631                    freq, duration, ret, strerror(-ret));
6632         return -1;
6633 }
6634
6635
6636 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6637 {
6638         struct i802_bss *bss = priv;
6639         struct wpa_driver_nl80211_data *drv = bss->drv;
6640         struct nl_msg *msg;
6641         int ret;
6642
6643         if (!drv->pending_remain_on_chan) {
6644                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6645                            "to cancel");
6646                 return -1;
6647         }
6648
6649         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6650                    "0x%llx",
6651                    (long long unsigned int) drv->remain_on_chan_cookie);
6652
6653         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6654         if (!msg ||
6655             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6656                 nlmsg_free(msg);
6657                 return -1;
6658         }
6659
6660         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6661         if (ret == 0)
6662                 return 0;
6663         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6664                    "%d (%s)", ret, strerror(-ret));
6665         return -1;
6666 }
6667
6668
6669 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6670 {
6671         struct wpa_driver_nl80211_data *drv = bss->drv;
6672
6673         if (!report) {
6674                 if (bss->nl_preq && drv->device_ap_sme &&
6675                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6676                     !bss->static_ap) {
6677                         /*
6678                          * Do not disable Probe Request reporting that was
6679                          * enabled in nl80211_setup_ap().
6680                          */
6681                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6682                                    "Probe Request reporting nl_preq=%p while "
6683                                    "in AP mode", bss->nl_preq);
6684                 } else if (bss->nl_preq) {
6685                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6686                                    "reporting nl_preq=%p", bss->nl_preq);
6687                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6688                 }
6689                 return 0;
6690         }
6691
6692         if (bss->nl_preq) {
6693                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6694                            "already on! nl_preq=%p", bss->nl_preq);
6695                 return 0;
6696         }
6697
6698         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6699         if (bss->nl_preq == NULL)
6700                 return -1;
6701         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6702                    "reporting nl_preq=%p", bss->nl_preq);
6703
6704         if (nl80211_register_frame(bss, bss->nl_preq,
6705                                    (WLAN_FC_TYPE_MGMT << 2) |
6706                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6707                                    NULL, 0) < 0)
6708                 goto out_err;
6709
6710         nl80211_register_eloop_read(&bss->nl_preq,
6711                                     wpa_driver_nl80211_event_receive,
6712                                     bss->nl_cb);
6713
6714         return 0;
6715
6716  out_err:
6717         nl_destroy_handles(&bss->nl_preq);
6718         return -1;
6719 }
6720
6721
6722 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6723                                      int ifindex, int disabled)
6724 {
6725         struct nl_msg *msg;
6726         struct nlattr *bands, *band;
6727         int ret;
6728
6729         wpa_printf(MSG_DEBUG,
6730                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6731                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6732                    "no NL80211_TXRATE_LEGACY constraint");
6733
6734         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6735                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6736         if (!msg)
6737                 return -1;
6738
6739         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6740         if (!bands)
6741                 goto fail;
6742
6743         /*
6744          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6745          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6746          * rates. All 5 GHz rates are left enabled.
6747          */
6748         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6749         if (!band ||
6750             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6751                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6752                 goto fail;
6753         nla_nest_end(msg, band);
6754
6755         nla_nest_end(msg, bands);
6756
6757         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6758         if (ret) {
6759                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6760                            "(%s)", ret, strerror(-ret));
6761         } else
6762                 drv->disabled_11b_rates = disabled;
6763
6764         return ret;
6765
6766 fail:
6767         nlmsg_free(msg);
6768         return -1;
6769 }
6770
6771
6772 static int wpa_driver_nl80211_deinit_ap(void *priv)
6773 {
6774         struct i802_bss *bss = priv;
6775         struct wpa_driver_nl80211_data *drv = bss->drv;
6776         if (!is_ap_interface(drv->nlmode))
6777                 return -1;
6778         wpa_driver_nl80211_del_beacon(drv);
6779         bss->beacon_set = 0;
6780
6781         /*
6782          * If the P2P GO interface was dynamically added, then it is
6783          * possible that the interface change to station is not possible.
6784          */
6785         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6786                 return 0;
6787
6788         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6789 }
6790
6791
6792 static int wpa_driver_nl80211_stop_ap(void *priv)
6793 {
6794         struct i802_bss *bss = priv;
6795         struct wpa_driver_nl80211_data *drv = bss->drv;
6796         if (!is_ap_interface(drv->nlmode))
6797                 return -1;
6798         wpa_driver_nl80211_del_beacon(drv);
6799         bss->beacon_set = 0;
6800         return 0;
6801 }
6802
6803
6804 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6805 {
6806         struct i802_bss *bss = priv;
6807         struct wpa_driver_nl80211_data *drv = bss->drv;
6808         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6809                 return -1;
6810
6811         /*
6812          * If the P2P Client interface was dynamically added, then it is
6813          * possible that the interface change to station is not possible.
6814          */
6815         if (bss->if_dynamic)
6816                 return 0;
6817
6818         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6819 }
6820
6821
6822 static void wpa_driver_nl80211_resume(void *priv)
6823 {
6824         struct i802_bss *bss = priv;
6825         enum nl80211_iftype nlmode = nl80211_get_ifmode(bss);
6826
6827         if (i802_set_iface_flags(bss, 1))
6828                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6829
6830         if (is_p2p_net_interface(nlmode))
6831                 nl80211_disable_11b_rates(bss->drv, bss->drv->ifindex, 1);
6832 }
6833
6834
6835 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6836 {
6837         struct i802_bss *bss = priv;
6838         struct wpa_driver_nl80211_data *drv = bss->drv;
6839         struct nl_msg *msg;
6840         struct nlattr *cqm;
6841
6842         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6843                    "hysteresis=%d", threshold, hysteresis);
6844
6845         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6846             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6847             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6848             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6849                 nlmsg_free(msg);
6850                 return -1;
6851         }
6852         nla_nest_end(msg, cqm);
6853
6854         return send_and_recv_msgs(drv, msg, NULL, NULL);
6855 }
6856
6857
6858 static int get_channel_width(struct nl_msg *msg, void *arg)
6859 {
6860         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6861         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6862         struct wpa_signal_info *sig_change = arg;
6863
6864         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6865                   genlmsg_attrlen(gnlh, 0), NULL);
6866
6867         sig_change->center_frq1 = -1;
6868         sig_change->center_frq2 = -1;
6869         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6870
6871         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6872                 sig_change->chanwidth = convert2width(
6873                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6874                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6875                         sig_change->center_frq1 =
6876                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6877                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6878                         sig_change->center_frq2 =
6879                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6880         }
6881
6882         return NL_SKIP;
6883 }
6884
6885
6886 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6887                                      struct wpa_signal_info *sig)
6888 {
6889         struct nl_msg *msg;
6890
6891         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6892         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6893 }
6894
6895
6896 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6897 {
6898         struct i802_bss *bss = priv;
6899         struct wpa_driver_nl80211_data *drv = bss->drv;
6900         int res;
6901
6902         os_memset(si, 0, sizeof(*si));
6903         res = nl80211_get_link_signal(drv, si);
6904         if (res) {
6905                 if (drv->nlmode != NL80211_IFTYPE_ADHOC &&
6906                     drv->nlmode != NL80211_IFTYPE_MESH_POINT)
6907                         return res;
6908                 si->current_signal = 0;
6909         }
6910
6911         res = nl80211_get_channel_width(drv, si);
6912         if (res != 0)
6913                 return res;
6914
6915         return nl80211_get_link_noise(drv, si);
6916 }
6917
6918
6919 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6920                               int encrypt)
6921 {
6922         struct i802_bss *bss = priv;
6923         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6924                                              0, 0, 0, 0, NULL, 0);
6925 }
6926
6927
6928 static int nl80211_set_param(void *priv, const char *param)
6929 {
6930         if (param == NULL)
6931                 return 0;
6932         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6933
6934 #ifdef CONFIG_P2P
6935         if (os_strstr(param, "use_p2p_group_interface=1")) {
6936                 struct i802_bss *bss = priv;
6937                 struct wpa_driver_nl80211_data *drv = bss->drv;
6938
6939                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6940                            "interface");
6941                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6942                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6943         }
6944 #endif /* CONFIG_P2P */
6945
6946         if (os_strstr(param, "use_monitor=1")) {
6947                 struct i802_bss *bss = priv;
6948                 struct wpa_driver_nl80211_data *drv = bss->drv;
6949                 drv->use_monitor = 1;
6950         }
6951
6952         if (os_strstr(param, "force_connect_cmd=1")) {
6953                 struct i802_bss *bss = priv;
6954                 struct wpa_driver_nl80211_data *drv = bss->drv;
6955                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6956                 drv->force_connect_cmd = 1;
6957         }
6958
6959         if (os_strstr(param, "no_offchannel_tx=1")) {
6960                 struct i802_bss *bss = priv;
6961                 struct wpa_driver_nl80211_data *drv = bss->drv;
6962                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6963                 drv->test_use_roc_tx = 1;
6964         }
6965
6966         return 0;
6967 }
6968
6969
6970 static void * nl80211_global_init(void *ctx)
6971 {
6972         struct nl80211_global *global;
6973         struct netlink_config *cfg;
6974
6975         global = os_zalloc(sizeof(*global));
6976         if (global == NULL)
6977                 return NULL;
6978         global->ctx = ctx;
6979         global->ioctl_sock = -1;
6980         dl_list_init(&global->interfaces);
6981         global->if_add_ifindex = -1;
6982
6983         cfg = os_zalloc(sizeof(*cfg));
6984         if (cfg == NULL)
6985                 goto err;
6986
6987         cfg->ctx = global;
6988         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6989         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6990         global->netlink = netlink_init(cfg);
6991         if (global->netlink == NULL) {
6992                 os_free(cfg);
6993                 goto err;
6994         }
6995
6996         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6997                 goto err;
6998
6999         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7000         if (global->ioctl_sock < 0) {
7001                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7002                            strerror(errno));
7003                 goto err;
7004         }
7005
7006         return global;
7007
7008 err:
7009         nl80211_global_deinit(global);
7010         return NULL;
7011 }
7012
7013
7014 static void nl80211_global_deinit(void *priv)
7015 {
7016         struct nl80211_global *global = priv;
7017         if (global == NULL)
7018                 return;
7019         if (!dl_list_empty(&global->interfaces)) {
7020                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7021                            "nl80211_global_deinit",
7022                            dl_list_len(&global->interfaces));
7023         }
7024
7025         if (global->netlink)
7026                 netlink_deinit(global->netlink);
7027
7028         nl_destroy_handles(&global->nl);
7029
7030         if (global->nl_event)
7031                 nl80211_destroy_eloop_handle(&global->nl_event);
7032
7033         nl_cb_put(global->nl_cb);
7034
7035         if (global->ioctl_sock >= 0)
7036                 close(global->ioctl_sock);
7037
7038         os_free(global);
7039 }
7040
7041
7042 static const char * nl80211_get_radio_name(void *priv)
7043 {
7044         struct i802_bss *bss = priv;
7045         struct wpa_driver_nl80211_data *drv = bss->drv;
7046         return drv->phyname;
7047 }
7048
7049
7050 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7051                          const u8 *pmkid)
7052 {
7053         struct nl_msg *msg;
7054
7055         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
7056             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
7057             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
7058                 nlmsg_free(msg);
7059                 return -ENOBUFS;
7060         }
7061
7062         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7063 }
7064
7065
7066 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7067 {
7068         struct i802_bss *bss = priv;
7069         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7070         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7071 }
7072
7073
7074 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7075 {
7076         struct i802_bss *bss = priv;
7077         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7078                    MAC2STR(bssid));
7079         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7080 }
7081
7082
7083 static int nl80211_flush_pmkid(void *priv)
7084 {
7085         struct i802_bss *bss = priv;
7086         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7087         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7088 }
7089
7090
7091 static void clean_survey_results(struct survey_results *survey_results)
7092 {
7093         struct freq_survey *survey, *tmp;
7094
7095         if (dl_list_empty(&survey_results->survey_list))
7096                 return;
7097
7098         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7099                               struct freq_survey, list) {
7100                 dl_list_del(&survey->list);
7101                 os_free(survey);
7102         }
7103 }
7104
7105
7106 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7107                        struct dl_list *survey_list)
7108 {
7109         struct freq_survey *survey;
7110
7111         survey = os_zalloc(sizeof(struct freq_survey));
7112         if  (!survey)
7113                 return;
7114
7115         survey->ifidx = ifidx;
7116         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7117         survey->filled = 0;
7118
7119         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7120                 survey->nf = (int8_t)
7121                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7122                 survey->filled |= SURVEY_HAS_NF;
7123         }
7124
7125         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7126                 survey->channel_time =
7127                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7128                 survey->filled |= SURVEY_HAS_CHAN_TIME;
7129         }
7130
7131         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7132                 survey->channel_time_busy =
7133                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7134                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7135         }
7136
7137         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7138                 survey->channel_time_rx =
7139                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7140                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7141         }
7142
7143         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7144                 survey->channel_time_tx =
7145                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7146                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7147         }
7148
7149         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)",
7150                    survey->freq,
7151                    survey->nf,
7152                    (unsigned long int) survey->channel_time,
7153                    (unsigned long int) survey->channel_time_busy,
7154                    (unsigned long int) survey->channel_time_tx,
7155                    (unsigned long int) survey->channel_time_rx,
7156                    survey->filled);
7157
7158         dl_list_add_tail(survey_list, &survey->list);
7159 }
7160
7161
7162 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7163                            unsigned int freq_filter)
7164 {
7165         if (!freq_filter)
7166                 return 1;
7167
7168         return freq_filter == surveyed_freq;
7169 }
7170
7171
7172 static int survey_handler(struct nl_msg *msg, void *arg)
7173 {
7174         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7175         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7176         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7177         struct survey_results *survey_results;
7178         u32 surveyed_freq = 0;
7179         u32 ifidx;
7180
7181         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7182                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7183                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7184         };
7185
7186         survey_results = (struct survey_results *) arg;
7187
7188         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7189                   genlmsg_attrlen(gnlh, 0), NULL);
7190
7191         if (!tb[NL80211_ATTR_IFINDEX])
7192                 return NL_SKIP;
7193
7194         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7195
7196         if (!tb[NL80211_ATTR_SURVEY_INFO])
7197                 return NL_SKIP;
7198
7199         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7200                              tb[NL80211_ATTR_SURVEY_INFO],
7201                              survey_policy))
7202                 return NL_SKIP;
7203
7204         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7205                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7206                 return NL_SKIP;
7207         }
7208
7209         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7210
7211         if (!check_survey_ok(sinfo, surveyed_freq,
7212                              survey_results->freq_filter))
7213                 return NL_SKIP;
7214
7215         if (survey_results->freq_filter &&
7216             survey_results->freq_filter != surveyed_freq) {
7217                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7218                            surveyed_freq);
7219                 return NL_SKIP;
7220         }
7221
7222         add_survey(sinfo, ifidx, &survey_results->survey_list);
7223
7224         return NL_SKIP;
7225 }
7226
7227
7228 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7229 {
7230         struct i802_bss *bss = priv;
7231         struct wpa_driver_nl80211_data *drv = bss->drv;
7232         struct nl_msg *msg;
7233         int err;
7234         union wpa_event_data data;
7235         struct survey_results *survey_results;
7236
7237         os_memset(&data, 0, sizeof(data));
7238         survey_results = &data.survey_results;
7239
7240         dl_list_init(&survey_results->survey_list);
7241
7242         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7243         if (!msg)
7244                 return -ENOBUFS;
7245
7246         if (freq)
7247                 data.survey_results.freq_filter = freq;
7248
7249         do {
7250                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7251                 err = send_and_recv_msgs(drv, msg, survey_handler,
7252                                          survey_results);
7253         } while (err > 0);
7254
7255         if (err)
7256                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7257         else
7258                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7259
7260         clean_survey_results(survey_results);
7261         return err;
7262 }
7263
7264
7265 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
7266                                    const u8 *kck, size_t kck_len,
7267                                    const u8 *replay_ctr)
7268 {
7269         struct i802_bss *bss = priv;
7270         struct wpa_driver_nl80211_data *drv = bss->drv;
7271         struct nlattr *replay_nested;
7272         struct nl_msg *msg;
7273         int ret;
7274
7275         if (!drv->set_rekey_offload)
7276                 return;
7277
7278         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
7279         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
7280             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
7281             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
7282             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
7283             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7284                     replay_ctr)) {
7285                 nl80211_nlmsg_clear(msg);
7286                 nlmsg_free(msg);
7287                 return;
7288         }
7289
7290         nla_nest_end(msg, replay_nested);
7291
7292         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
7293         if (ret == -EOPNOTSUPP) {
7294                 wpa_printf(MSG_DEBUG,
7295                            "nl80211: Driver does not support rekey offload");
7296                 drv->set_rekey_offload = 0;
7297         }
7298 }
7299
7300
7301 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7302                                     const u8 *addr, int qos)
7303 {
7304         /* send data frame to poll STA and check whether
7305          * this frame is ACKed */
7306         struct {
7307                 struct ieee80211_hdr hdr;
7308                 u16 qos_ctl;
7309         } STRUCT_PACKED nulldata;
7310         size_t size;
7311
7312         /* Send data frame to poll STA and check whether this frame is ACKed */
7313
7314         os_memset(&nulldata, 0, sizeof(nulldata));
7315
7316         if (qos) {
7317                 nulldata.hdr.frame_control =
7318                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7319                                      WLAN_FC_STYPE_QOS_NULL);
7320                 size = sizeof(nulldata);
7321         } else {
7322                 nulldata.hdr.frame_control =
7323                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7324                                      WLAN_FC_STYPE_NULLFUNC);
7325                 size = sizeof(struct ieee80211_hdr);
7326         }
7327
7328         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7329         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7330         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7331         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7332
7333         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7334                                          0, 0, NULL, 0) < 0)
7335                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7336                            "send poll frame");
7337 }
7338
7339 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7340                                 int qos)
7341 {
7342         struct i802_bss *bss = priv;
7343         struct wpa_driver_nl80211_data *drv = bss->drv;
7344         struct nl_msg *msg;
7345         int ret;
7346
7347         if (!drv->poll_command_supported) {
7348                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7349                 return;
7350         }
7351
7352         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
7353             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7354                 nlmsg_free(msg);
7355                 return;
7356         }
7357
7358         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7359         if (ret < 0) {
7360                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
7361                            MACSTR " failed: ret=%d (%s)",
7362                            MAC2STR(addr), ret, strerror(-ret));
7363         }
7364 }
7365
7366
7367 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7368 {
7369         struct nl_msg *msg;
7370
7371         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
7372             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7373                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7374                 nlmsg_free(msg);
7375                 return -ENOBUFS;
7376         }
7377         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7378 }
7379
7380
7381 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7382                                      int ctwindow)
7383 {
7384         struct i802_bss *bss = priv;
7385
7386         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7387                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7388
7389         if (opp_ps != -1 || ctwindow != -1) {
7390 #ifdef ANDROID_P2P
7391                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7392 #else /* ANDROID_P2P */
7393                 return -1; /* Not yet supported */
7394 #endif /* ANDROID_P2P */
7395         }
7396
7397         if (legacy_ps == -1)
7398                 return 0;
7399         if (legacy_ps != 0 && legacy_ps != 1)
7400                 return -1; /* Not yet supported */
7401
7402         return nl80211_set_power_save(bss, legacy_ps);
7403 }
7404
7405
7406 static int nl80211_start_radar_detection(void *priv,
7407                                          struct hostapd_freq_params *freq)
7408 {
7409         struct i802_bss *bss = priv;
7410         struct wpa_driver_nl80211_data *drv = bss->drv;
7411         struct nl_msg *msg;
7412         int ret;
7413
7414         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)",
7415                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7416                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7417
7418         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7419                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7420                            "detection");
7421                 return -1;
7422         }
7423
7424         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7425             nl80211_put_freq_params(msg, freq) < 0) {
7426                 nlmsg_free(msg);
7427                 return -1;
7428         }
7429
7430         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7431         if (ret == 0)
7432                 return 0;
7433         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7434                    "%d (%s)", ret, strerror(-ret));
7435         return -1;
7436 }
7437
7438 #ifdef CONFIG_TDLS
7439
7440 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7441                                   u8 dialog_token, u16 status_code,
7442                                   u32 peer_capab, int initiator, const u8 *buf,
7443                                   size_t len)
7444 {
7445         struct i802_bss *bss = priv;
7446         struct wpa_driver_nl80211_data *drv = bss->drv;
7447         struct nl_msg *msg;
7448
7449         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7450                 return -EOPNOTSUPP;
7451
7452         if (!dst)
7453                 return -EINVAL;
7454
7455         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7456             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7457             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7458             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7459             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7460                 goto fail;
7461         if (peer_capab) {
7462                 /*
7463                  * The internal enum tdls_peer_capability definition is
7464                  * currently identical with the nl80211 enum
7465                  * nl80211_tdls_peer_capability, so no conversion is needed
7466                  * here.
7467                  */
7468                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7469                                 peer_capab))
7470                         goto fail;
7471         }
7472         if ((initiator &&
7473              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7474             nla_put(msg, NL80211_ATTR_IE, len, buf))
7475                 goto fail;
7476
7477         return send_and_recv_msgs(drv, msg, NULL, NULL);
7478
7479 fail:
7480         nlmsg_free(msg);
7481         return -ENOBUFS;
7482 }
7483
7484
7485 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7486 {
7487         struct i802_bss *bss = priv;
7488         struct wpa_driver_nl80211_data *drv = bss->drv;
7489         struct nl_msg *msg;
7490         enum nl80211_tdls_operation nl80211_oper;
7491
7492         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7493                 return -EOPNOTSUPP;
7494
7495         switch (oper) {
7496         case TDLS_DISCOVERY_REQ:
7497                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7498                 break;
7499         case TDLS_SETUP:
7500                 nl80211_oper = NL80211_TDLS_SETUP;
7501                 break;
7502         case TDLS_TEARDOWN:
7503                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7504                 break;
7505         case TDLS_ENABLE_LINK:
7506                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7507                 break;
7508         case TDLS_DISABLE_LINK:
7509                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7510                 break;
7511         case TDLS_ENABLE:
7512                 return 0;
7513         case TDLS_DISABLE:
7514                 return 0;
7515         default:
7516                 return -EINVAL;
7517         }
7518
7519         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7520             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7521             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7522                 nlmsg_free(msg);
7523                 return -ENOBUFS;
7524         }
7525
7526         return send_and_recv_msgs(drv, msg, NULL, NULL);
7527 }
7528
7529
7530 static int
7531 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7532                                    const struct hostapd_freq_params *params)
7533 {
7534         struct i802_bss *bss = priv;
7535         struct wpa_driver_nl80211_data *drv = bss->drv;
7536         struct nl_msg *msg;
7537         int ret = -ENOBUFS;
7538
7539         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7540             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7541                 return -EOPNOTSUPP;
7542
7543         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7544                    " oper_class=%u freq=%u",
7545                    MAC2STR(addr), oper_class, params->freq);
7546         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7547         if (!msg ||
7548             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7549             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7550             (ret = nl80211_put_freq_params(msg, params))) {
7551                 nlmsg_free(msg);
7552                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7553                 return ret;
7554         }
7555
7556         return send_and_recv_msgs(drv, msg, NULL, NULL);
7557 }
7558
7559
7560 static int
7561 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7562 {
7563         struct i802_bss *bss = priv;
7564         struct wpa_driver_nl80211_data *drv = bss->drv;
7565         struct nl_msg *msg;
7566
7567         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7568             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7569                 return -EOPNOTSUPP;
7570
7571         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7572                    MAC2STR(addr));
7573         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7574         if (!msg ||
7575             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7576                 nlmsg_free(msg);
7577                 wpa_printf(MSG_DEBUG,
7578                            "nl80211: Could not build TDLS cancel chan switch");
7579                 return -ENOBUFS;
7580         }
7581
7582         return send_and_recv_msgs(drv, msg, NULL, NULL);
7583 }
7584
7585 #endif /* CONFIG TDLS */
7586
7587
7588 static int driver_nl80211_set_key(const char *ifname, void *priv,
7589                                   enum wpa_alg alg, const u8 *addr,
7590                                   int key_idx, int set_tx,
7591                                   const u8 *seq, size_t seq_len,
7592                                   const u8 *key, size_t key_len)
7593 {
7594         struct i802_bss *bss = priv;
7595         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7596                                           set_tx, seq, seq_len, key, key_len);
7597 }
7598
7599
7600 static int driver_nl80211_scan2(void *priv,
7601                                 struct wpa_driver_scan_params *params)
7602 {
7603         struct i802_bss *bss = priv;
7604 #ifdef CONFIG_DRIVER_NL80211_QCA
7605         struct wpa_driver_nl80211_data *drv = bss->drv;
7606
7607         /*
7608          * Do a vendor specific scan if possible. If only_new_results is
7609          * set, do a normal scan since a kernel (cfg80211) BSS cache flush
7610          * cannot be achieved through a vendor scan. The below condition may
7611          * need to be modified if new scan flags are added in the future whose
7612          * functionality can only be achieved through a normal scan.
7613          */
7614         if (drv->scan_vendor_cmd_avail && !params->only_new_results)
7615                 return wpa_driver_nl80211_vendor_scan(bss, params);
7616 #endif /* CONFIG_DRIVER_NL80211_QCA */
7617         return wpa_driver_nl80211_scan(bss, params);
7618 }
7619
7620
7621 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7622                                          int reason_code)
7623 {
7624         struct i802_bss *bss = priv;
7625         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7626 }
7627
7628
7629 static int driver_nl80211_authenticate(void *priv,
7630                                        struct wpa_driver_auth_params *params)
7631 {
7632         struct i802_bss *bss = priv;
7633         return wpa_driver_nl80211_authenticate(bss, params);
7634 }
7635
7636
7637 static void driver_nl80211_deinit(void *priv)
7638 {
7639         struct i802_bss *bss = priv;
7640         wpa_driver_nl80211_deinit(bss);
7641 }
7642
7643
7644 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7645                                     const char *ifname)
7646 {
7647         struct i802_bss *bss = priv;
7648         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7649 }
7650
7651
7652 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7653                                     size_t data_len, int noack,
7654                                     unsigned int freq,
7655                                     const u16 *csa_offs, size_t csa_offs_len)
7656 {
7657         struct i802_bss *bss = priv;
7658         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7659                                             freq, 0, 0, 0, csa_offs,
7660                                             csa_offs_len);
7661 }
7662
7663
7664 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7665 {
7666         struct i802_bss *bss = priv;
7667         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7668 }
7669
7670
7671 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7672                                        const char *ifname, int vlan_id)
7673 {
7674         struct i802_bss *bss = priv;
7675         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7676 }
7677
7678
7679 static int driver_nl80211_read_sta_data(void *priv,
7680                                         struct hostap_sta_driver_data *data,
7681                                         const u8 *addr)
7682 {
7683         struct i802_bss *bss = priv;
7684         return i802_read_sta_data(bss, data, addr);
7685 }
7686
7687
7688 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7689                                       unsigned int wait_time,
7690                                       const u8 *dst, const u8 *src,
7691                                       const u8 *bssid,
7692                                       const u8 *data, size_t data_len,
7693                                       int no_cck)
7694 {
7695         struct i802_bss *bss = priv;
7696         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7697                                               bssid, data, data_len, no_cck);
7698 }
7699
7700
7701 static int driver_nl80211_probe_req_report(void *priv, int report)
7702 {
7703         struct i802_bss *bss = priv;
7704         return wpa_driver_nl80211_probe_req_report(bss, report);
7705 }
7706
7707
7708 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7709                                             const u8 *ies, size_t ies_len)
7710 {
7711         int ret;
7712         struct nl_msg *msg;
7713         struct i802_bss *bss = priv;
7714         struct wpa_driver_nl80211_data *drv = bss->drv;
7715         u16 mdid = WPA_GET_LE16(md);
7716
7717         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7718         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7719             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7720             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7721                 nlmsg_free(msg);
7722                 return -ENOBUFS;
7723         }
7724
7725         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7726         if (ret) {
7727                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7728                            "err=%d (%s)", ret, strerror(-ret));
7729         }
7730
7731         return ret;
7732 }
7733
7734
7735 static const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7736 {
7737         struct i802_bss *bss = priv;
7738         struct wpa_driver_nl80211_data *drv = bss->drv;
7739
7740         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7741                 return NULL;
7742
7743         return bss->addr;
7744 }
7745
7746
7747 static const char * scan_state_str(enum scan_states scan_state)
7748 {
7749         switch (scan_state) {
7750         case NO_SCAN:
7751                 return "NO_SCAN";
7752         case SCAN_REQUESTED:
7753                 return "SCAN_REQUESTED";
7754         case SCAN_STARTED:
7755                 return "SCAN_STARTED";
7756         case SCAN_COMPLETED:
7757                 return "SCAN_COMPLETED";
7758         case SCAN_ABORTED:
7759                 return "SCAN_ABORTED";
7760         case SCHED_SCAN_STARTED:
7761                 return "SCHED_SCAN_STARTED";
7762         case SCHED_SCAN_STOPPED:
7763                 return "SCHED_SCAN_STOPPED";
7764         case SCHED_SCAN_RESULTS:
7765                 return "SCHED_SCAN_RESULTS";
7766         }
7767
7768         return "??";
7769 }
7770
7771
7772 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7773 {
7774         struct i802_bss *bss = priv;
7775         struct wpa_driver_nl80211_data *drv = bss->drv;
7776         int res;
7777         char *pos, *end;
7778
7779         pos = buf;
7780         end = buf + buflen;
7781
7782         res = os_snprintf(pos, end - pos,
7783                           "ifindex=%d\n"
7784                           "ifname=%s\n"
7785                           "brname=%s\n"
7786                           "addr=" MACSTR "\n"
7787                           "freq=%d\n"
7788                           "%s%s%s%s%s",
7789                           bss->ifindex,
7790                           bss->ifname,
7791                           bss->brname,
7792                           MAC2STR(bss->addr),
7793                           bss->freq,
7794                           bss->beacon_set ? "beacon_set=1\n" : "",
7795                           bss->added_if_into_bridge ?
7796                           "added_if_into_bridge=1\n" : "",
7797                           bss->added_bridge ? "added_bridge=1\n" : "",
7798                           bss->in_deinit ? "in_deinit=1\n" : "",
7799                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7800         if (os_snprintf_error(end - pos, res))
7801                 return pos - buf;
7802         pos += res;
7803
7804         if (bss->wdev_id_set) {
7805                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7806                                   (unsigned long long) bss->wdev_id);
7807                 if (os_snprintf_error(end - pos, res))
7808                         return pos - buf;
7809                 pos += res;
7810         }
7811
7812         res = os_snprintf(pos, end - pos,
7813                           "phyname=%s\n"
7814                           "perm_addr=" MACSTR "\n"
7815                           "drv_ifindex=%d\n"
7816                           "operstate=%d\n"
7817                           "scan_state=%s\n"
7818                           "auth_bssid=" MACSTR "\n"
7819                           "auth_attempt_bssid=" MACSTR "\n"
7820                           "bssid=" MACSTR "\n"
7821                           "prev_bssid=" MACSTR "\n"
7822                           "associated=%d\n"
7823                           "assoc_freq=%u\n"
7824                           "monitor_sock=%d\n"
7825                           "monitor_ifidx=%d\n"
7826                           "monitor_refcount=%d\n"
7827                           "last_mgmt_freq=%u\n"
7828                           "eapol_tx_sock=%d\n"
7829                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7830                           drv->phyname,
7831                           MAC2STR(drv->perm_addr),
7832                           drv->ifindex,
7833                           drv->operstate,
7834                           scan_state_str(drv->scan_state),
7835                           MAC2STR(drv->auth_bssid),
7836                           MAC2STR(drv->auth_attempt_bssid),
7837                           MAC2STR(drv->bssid),
7838                           MAC2STR(drv->prev_bssid),
7839                           drv->associated,
7840                           drv->assoc_freq,
7841                           drv->monitor_sock,
7842                           drv->monitor_ifidx,
7843                           drv->monitor_refcount,
7844                           drv->last_mgmt_freq,
7845                           drv->eapol_tx_sock,
7846                           drv->ignore_if_down_event ?
7847                           "ignore_if_down_event=1\n" : "",
7848                           drv->scan_complete_events ?
7849                           "scan_complete_events=1\n" : "",
7850                           drv->disabled_11b_rates ?
7851                           "disabled_11b_rates=1\n" : "",
7852                           drv->pending_remain_on_chan ?
7853                           "pending_remain_on_chan=1\n" : "",
7854                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7855                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7856                           drv->poll_command_supported ?
7857                           "poll_command_supported=1\n" : "",
7858                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7859                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7860                           drv->retry_auth ? "retry_auth=1\n" : "",
7861                           drv->use_monitor ? "use_monitor=1\n" : "",
7862                           drv->ignore_next_local_disconnect ?
7863                           "ignore_next_local_disconnect=1\n" : "",
7864                           drv->ignore_next_local_deauth ?
7865                           "ignore_next_local_deauth=1\n" : "");
7866         if (os_snprintf_error(end - pos, res))
7867                 return pos - buf;
7868         pos += res;
7869
7870         if (drv->has_capability) {
7871                 res = os_snprintf(pos, end - pos,
7872                                   "capa.key_mgmt=0x%x\n"
7873                                   "capa.enc=0x%x\n"
7874                                   "capa.auth=0x%x\n"
7875                                   "capa.flags=0x%llx\n"
7876                                   "capa.rrm_flags=0x%x\n"
7877                                   "capa.max_scan_ssids=%d\n"
7878                                   "capa.max_sched_scan_ssids=%d\n"
7879                                   "capa.sched_scan_supported=%d\n"
7880                                   "capa.max_match_sets=%d\n"
7881                                   "capa.max_remain_on_chan=%u\n"
7882                                   "capa.max_stations=%u\n"
7883                                   "capa.probe_resp_offloads=0x%x\n"
7884                                   "capa.max_acl_mac_addrs=%u\n"
7885                                   "capa.num_multichan_concurrent=%u\n"
7886                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7887                                   "capa.mac_addr_rand_scan_supported=%d\n"
7888                                   "capa.conc_capab=%u\n"
7889                                   "capa.max_conc_chan_2_4=%u\n"
7890                                   "capa.max_conc_chan_5_0=%u\n"
7891                                   "capa.max_sched_scan_plans=%u\n"
7892                                   "capa.max_sched_scan_plan_interval=%u\n"
7893                                   "capa.max_sched_scan_plan_iterations=%u\n",
7894                                   drv->capa.key_mgmt,
7895                                   drv->capa.enc,
7896                                   drv->capa.auth,
7897                                   (unsigned long long) drv->capa.flags,
7898                                   drv->capa.rrm_flags,
7899                                   drv->capa.max_scan_ssids,
7900                                   drv->capa.max_sched_scan_ssids,
7901                                   drv->capa.sched_scan_supported,
7902                                   drv->capa.max_match_sets,
7903                                   drv->capa.max_remain_on_chan,
7904                                   drv->capa.max_stations,
7905                                   drv->capa.probe_resp_offloads,
7906                                   drv->capa.max_acl_mac_addrs,
7907                                   drv->capa.num_multichan_concurrent,
7908                                   drv->capa.mac_addr_rand_sched_scan_supported,
7909                                   drv->capa.mac_addr_rand_scan_supported,
7910                                   drv->capa.conc_capab,
7911                                   drv->capa.max_conc_chan_2_4,
7912                                   drv->capa.max_conc_chan_5_0,
7913                                   drv->capa.max_sched_scan_plans,
7914                                   drv->capa.max_sched_scan_plan_interval,
7915                                   drv->capa.max_sched_scan_plan_iterations);
7916                 if (os_snprintf_error(end - pos, res))
7917                         return pos - buf;
7918                 pos += res;
7919         }
7920
7921         return pos - buf;
7922 }
7923
7924
7925 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7926 {
7927         if ((settings->head &&
7928              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7929                      settings->head_len, settings->head)) ||
7930             (settings->tail &&
7931              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7932                      settings->tail_len, settings->tail)) ||
7933             (settings->beacon_ies &&
7934              nla_put(msg, NL80211_ATTR_IE,
7935                      settings->beacon_ies_len, settings->beacon_ies)) ||
7936             (settings->proberesp_ies &&
7937              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7938                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7939             (settings->assocresp_ies &&
7940              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7941                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7942             (settings->probe_resp &&
7943              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7944                      settings->probe_resp_len, settings->probe_resp)))
7945                 return -ENOBUFS;
7946
7947         return 0;
7948 }
7949
7950
7951 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7952 {
7953         struct nl_msg *msg;
7954         struct i802_bss *bss = priv;
7955         struct wpa_driver_nl80211_data *drv = bss->drv;
7956         struct nlattr *beacon_csa;
7957         int ret = -ENOBUFS;
7958         int csa_off_len = 0;
7959         int i;
7960
7961         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7962                    settings->cs_count, settings->block_tx,
7963                    settings->freq_params.freq, settings->freq_params.bandwidth,
7964                    settings->freq_params.center_freq1,
7965                    settings->freq_params.center_freq2);
7966
7967         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7968                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7969                 return -EOPNOTSUPP;
7970         }
7971
7972         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7973             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7974                 return -EOPNOTSUPP;
7975
7976         /*
7977          * Remove empty counters, assuming Probe Response and Beacon frame
7978          * counters match. This implementation assumes that there are only two
7979          * counters.
7980          */
7981         if (settings->counter_offset_beacon[0] &&
7982             !settings->counter_offset_beacon[1]) {
7983                 csa_off_len = 1;
7984         } else if (settings->counter_offset_beacon[1] &&
7985                    !settings->counter_offset_beacon[0]) {
7986                 csa_off_len = 1;
7987                 settings->counter_offset_beacon[0] =
7988                         settings->counter_offset_beacon[1];
7989                 settings->counter_offset_presp[0] =
7990                         settings->counter_offset_presp[1];
7991         } else if (settings->counter_offset_beacon[1] &&
7992                    settings->counter_offset_beacon[0]) {
7993                 csa_off_len = 2;
7994         } else {
7995                 wpa_printf(MSG_ERROR, "nl80211: No CSA counters provided");
7996                 return -EINVAL;
7997         }
7998
7999         /* Check CSA counters validity */
8000         if (drv->capa.max_csa_counters &&
8001             csa_off_len > drv->capa.max_csa_counters) {
8002                 wpa_printf(MSG_ERROR,
8003                            "nl80211: Too many CSA counters provided");
8004                 return -EINVAL;
8005         }
8006
8007         if (!settings->beacon_csa.tail)
8008                 return -EINVAL;
8009
8010         for (i = 0; i < csa_off_len; i++) {
8011                 u16 csa_c_off_bcn = settings->counter_offset_beacon[i];
8012                 u16 csa_c_off_presp = settings->counter_offset_presp[i];
8013
8014                 if ((settings->beacon_csa.tail_len <= csa_c_off_bcn) ||
8015                     (settings->beacon_csa.tail[csa_c_off_bcn] !=
8016                      settings->cs_count))
8017                         return -EINVAL;
8018
8019                 if (settings->beacon_csa.probe_resp &&
8020                     ((settings->beacon_csa.probe_resp_len <=
8021                       csa_c_off_presp) ||
8022                      (settings->beacon_csa.probe_resp[csa_c_off_presp] !=
8023                       settings->cs_count)))
8024                         return -EINVAL;
8025         }
8026
8027         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
8028             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
8029                         settings->cs_count) ||
8030             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
8031             (settings->block_tx &&
8032              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
8033                 goto error;
8034
8035         /* beacon_after params */
8036         ret = set_beacon_data(msg, &settings->beacon_after);
8037         if (ret)
8038                 goto error;
8039
8040         /* beacon_csa params */
8041         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8042         if (!beacon_csa)
8043                 goto fail;
8044
8045         ret = set_beacon_data(msg, &settings->beacon_csa);
8046         if (ret)
8047                 goto error;
8048
8049         if (nla_put(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8050                     csa_off_len * sizeof(u16),
8051                     settings->counter_offset_beacon) ||
8052             (settings->beacon_csa.probe_resp &&
8053              nla_put(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8054                      csa_off_len * sizeof(u16),
8055                      settings->counter_offset_presp)))
8056                 goto fail;
8057
8058         nla_nest_end(msg, beacon_csa);
8059         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8060         if (ret) {
8061                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8062                            ret, strerror(-ret));
8063         }
8064         return ret;
8065
8066 fail:
8067         ret = -ENOBUFS;
8068 error:
8069         nlmsg_free(msg);
8070         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8071         return ret;
8072 }
8073
8074
8075 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8076                           u8 user_priority, u16 admitted_time)
8077 {
8078         struct i802_bss *bss = priv;
8079         struct wpa_driver_nl80211_data *drv = bss->drv;
8080         struct nl_msg *msg;
8081         int ret;
8082
8083         wpa_printf(MSG_DEBUG,
8084                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8085                    tsid, admitted_time, user_priority);
8086
8087         if (!is_sta_interface(drv->nlmode))
8088                 return -ENOTSUP;
8089
8090         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
8091         if (!msg ||
8092             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8093             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8094             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
8095             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
8096                 nlmsg_free(msg);
8097                 return -ENOBUFS;
8098         }
8099
8100         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8101         if (ret)
8102                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8103                            ret, strerror(-ret));
8104         return ret;
8105 }
8106
8107
8108 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8109 {
8110         struct i802_bss *bss = priv;
8111         struct wpa_driver_nl80211_data *drv = bss->drv;
8112         struct nl_msg *msg;
8113         int ret;
8114
8115         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8116
8117         if (!is_sta_interface(drv->nlmode))
8118                 return -ENOTSUP;
8119
8120         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
8121             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8122             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
8123                 nlmsg_free(msg);
8124                 return -ENOBUFS;
8125         }
8126
8127         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8128         if (ret)
8129                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8130                            ret, strerror(-ret));
8131         return ret;
8132 }
8133
8134
8135 #ifdef CONFIG_TESTING_OPTIONS
8136 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8137 {
8138         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8139         struct wpabuf *buf = arg;
8140
8141         if (!buf)
8142                 return NL_SKIP;
8143
8144         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8145                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8146                 return NL_SKIP;
8147         }
8148
8149         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8150                         genlmsg_attrlen(gnlh, 0));
8151
8152         return NL_SKIP;
8153 }
8154 #endif /* CONFIG_TESTING_OPTIONS */
8155
8156
8157 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8158 {
8159         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8160         struct nlattr *nl_vendor_reply, *nl;
8161         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8162         struct wpabuf *buf = arg;
8163         int rem;
8164
8165         if (!buf)
8166                 return NL_SKIP;
8167
8168         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8169                   genlmsg_attrlen(gnlh, 0), NULL);
8170         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8171
8172         if (!nl_vendor_reply)
8173                 return NL_SKIP;
8174
8175         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8176                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8177                 return NL_SKIP;
8178         }
8179
8180         nla_for_each_nested(nl, nl_vendor_reply, rem) {
8181                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8182         }
8183
8184         return NL_SKIP;
8185 }
8186
8187
8188 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8189                               unsigned int subcmd, const u8 *data,
8190                               size_t data_len, struct wpabuf *buf)
8191 {
8192         struct i802_bss *bss = priv;
8193         struct wpa_driver_nl80211_data *drv = bss->drv;
8194         struct nl_msg *msg;
8195         int ret;
8196
8197 #ifdef CONFIG_TESTING_OPTIONS
8198         if (vendor_id == 0xffffffff) {
8199                 msg = nlmsg_alloc();
8200                 if (!msg)
8201                         return -ENOMEM;
8202
8203                 nl80211_cmd(drv, msg, 0, subcmd);
8204                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8205                     0)
8206                         goto fail;
8207                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8208                 if (ret)
8209                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8210                                    ret);
8211                 return ret;
8212         }
8213 #endif /* CONFIG_TESTING_OPTIONS */
8214
8215         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
8216             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
8217             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
8218             (data &&
8219              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
8220                 goto fail;
8221
8222         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8223         if (ret)
8224                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8225                            ret);
8226         return ret;
8227
8228 fail:
8229         nlmsg_free(msg);
8230         return -ENOBUFS;
8231 }
8232
8233
8234 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8235                                u8 qos_map_set_len)
8236 {
8237         struct i802_bss *bss = priv;
8238         struct wpa_driver_nl80211_data *drv = bss->drv;
8239         struct nl_msg *msg;
8240         int ret;
8241
8242         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8243                     qos_map_set, qos_map_set_len);
8244
8245         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
8246             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
8247                 nlmsg_free(msg);
8248                 return -ENOBUFS;
8249         }
8250
8251         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8252         if (ret)
8253                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8254
8255         return ret;
8256 }
8257
8258
8259 static int nl80211_set_wowlan(void *priv,
8260                               const struct wowlan_triggers *triggers)
8261 {
8262         struct i802_bss *bss = priv;
8263         struct wpa_driver_nl80211_data *drv = bss->drv;
8264         struct nl_msg *msg;
8265         struct nlattr *wowlan_triggers;
8266         int ret;
8267
8268         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8269
8270         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_SET_WOWLAN)) ||
8271             !(wowlan_triggers = nla_nest_start(msg,
8272                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
8273             (triggers->any &&
8274              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8275             (triggers->disconnect &&
8276              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8277             (triggers->magic_pkt &&
8278              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8279             (triggers->gtk_rekey_failure &&
8280              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8281             (triggers->eap_identity_req &&
8282              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8283             (triggers->four_way_handshake &&
8284              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8285             (triggers->rfkill_release &&
8286              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
8287                 nlmsg_free(msg);
8288                 return -ENOBUFS;
8289         }
8290
8291         nla_nest_end(msg, wowlan_triggers);
8292
8293         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8294         if (ret)
8295                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8296
8297         return ret;
8298 }
8299
8300
8301 #ifdef CONFIG_DRIVER_NL80211_QCA
8302 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8303 {
8304         struct i802_bss *bss = priv;
8305         struct wpa_driver_nl80211_data *drv = bss->drv;
8306         struct nl_msg *msg;
8307         struct nlattr *params;
8308
8309         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8310
8311         if (!drv->roaming_vendor_cmd_avail) {
8312                 wpa_printf(MSG_DEBUG,
8313                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8314                 return -1;
8315         }
8316
8317         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8318             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8319             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8320                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
8321             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8322             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8323                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8324                         QCA_ROAMING_NOT_ALLOWED) ||
8325             (bssid &&
8326              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
8327                 nlmsg_free(msg);
8328                 return -1;
8329         }
8330         nla_nest_end(msg, params);
8331
8332         return send_and_recv_msgs(drv, msg, NULL, NULL);
8333 }
8334 #endif /* CONFIG_DRIVER_NL80211_QCA */
8335
8336
8337 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8338 {
8339         struct i802_bss *bss = priv;
8340         struct wpa_driver_nl80211_data *drv = bss->drv;
8341         int new_addr = addr != NULL;
8342
8343         if (TEST_FAIL())
8344                 return -1;
8345
8346         if (!addr)
8347                 addr = drv->perm_addr;
8348
8349         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8350                 return -1;
8351
8352         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8353         {
8354                 wpa_printf(MSG_DEBUG,
8355                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8356                            bss->ifname, MAC2STR(addr));
8357                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8358                                           1) < 0) {
8359                         wpa_printf(MSG_DEBUG,
8360                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8361                 }
8362                 return -1;
8363         }
8364
8365         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8366                    bss->ifname, MAC2STR(addr));
8367         drv->addr_changed = new_addr;
8368         os_memcpy(bss->addr, addr, ETH_ALEN);
8369
8370         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8371         {
8372                 wpa_printf(MSG_DEBUG,
8373                            "nl80211: Could not restore interface UP after set_mac_addr");
8374         }
8375
8376         return 0;
8377 }
8378
8379
8380 #ifdef CONFIG_MESH
8381
8382 static int wpa_driver_nl80211_init_mesh(void *priv)
8383 {
8384         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8385                 wpa_printf(MSG_INFO,
8386                            "nl80211: Failed to set interface into mesh mode");
8387                 return -1;
8388         }
8389         return 0;
8390 }
8391
8392
8393 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
8394                                size_t mesh_id_len)
8395 {
8396         if (mesh_id) {
8397                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
8398                                   mesh_id, mesh_id_len);
8399                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
8400         }
8401
8402         return 0;
8403 }
8404
8405
8406 static int nl80211_join_mesh(struct i802_bss *bss,
8407                              struct wpa_driver_mesh_join_params *params)
8408 {
8409         struct wpa_driver_nl80211_data *drv = bss->drv;
8410         struct nl_msg *msg;
8411         struct nlattr *container;
8412         int ret = -1;
8413
8414         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8415         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
8416         if (!msg ||
8417             nl80211_put_freq_params(msg, &params->freq) ||
8418             nl80211_put_basic_rates(msg, params->basic_rates) ||
8419             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
8420             nl80211_put_beacon_int(msg, params->beacon_int) ||
8421             nl80211_put_dtim_period(msg, params->dtim_period))
8422                 goto fail;
8423
8424         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8425
8426         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8427         if (!container)
8428                 goto fail;
8429
8430         if (params->ies) {
8431                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8432                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8433                             params->ies))
8434                         goto fail;
8435         }
8436         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8437         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8438                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8439                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8440                         goto fail;
8441         }
8442         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8443             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8444                 goto fail;
8445         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8446             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8447                 goto fail;
8448         nla_nest_end(msg, container);
8449
8450         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8451         if (!container)
8452                 goto fail;
8453
8454         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8455             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8456                 goto fail;
8457         if (nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8458                         params->max_peer_links))
8459                 goto fail;
8460
8461         /*
8462          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
8463          * the timer could disconnect stations even in that case.
8464          */
8465         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8466                         params->conf.peer_link_timeout)) {
8467                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8468                 goto fail;
8469         }
8470
8471         nla_nest_end(msg, container);
8472
8473         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8474         msg = NULL;
8475         if (ret) {
8476                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8477                            ret, strerror(-ret));
8478                 goto fail;
8479         }
8480         ret = 0;
8481         drv->assoc_freq = bss->freq = params->freq.freq;
8482         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8483
8484 fail:
8485         nlmsg_free(msg);
8486         return ret;
8487 }
8488
8489
8490 static int
8491 wpa_driver_nl80211_join_mesh(void *priv,
8492                              struct wpa_driver_mesh_join_params *params)
8493 {
8494         struct i802_bss *bss = priv;
8495         int ret, timeout;
8496
8497         timeout = params->conf.peer_link_timeout;
8498
8499         /* Disable kernel inactivity timer */
8500         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8501                 params->conf.peer_link_timeout = 0;
8502
8503         ret = nl80211_join_mesh(bss, params);
8504         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8505                 wpa_printf(MSG_DEBUG,
8506                            "nl80211: Mesh join retry for peer_link_timeout");
8507                 /*
8508                  * Old kernel does not support setting
8509                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8510                  * into future from peer_link_timeout.
8511                  */
8512                 params->conf.peer_link_timeout = timeout + 60;
8513                 ret = nl80211_join_mesh(priv, params);
8514         }
8515
8516         params->conf.peer_link_timeout = timeout;
8517         return ret;
8518 }
8519
8520
8521 static int wpa_driver_nl80211_leave_mesh(void *priv)
8522 {
8523         struct i802_bss *bss = priv;
8524         struct wpa_driver_nl80211_data *drv = bss->drv;
8525         struct nl_msg *msg;
8526         int ret;
8527
8528         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8529         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8530         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8531         if (ret) {
8532                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8533                            ret, strerror(-ret));
8534         } else {
8535                 wpa_printf(MSG_DEBUG,
8536                            "nl80211: mesh leave request send successfully");
8537         }
8538
8539         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8540                                         NL80211_IFTYPE_STATION)) {
8541                 wpa_printf(MSG_INFO,
8542                            "nl80211: Failed to set interface into station mode");
8543         }
8544         return ret;
8545 }
8546
8547 #endif /* CONFIG_MESH */
8548
8549
8550 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8551                                       const u8 *ipaddr, int prefixlen,
8552                                       const u8 *addr)
8553 {
8554 #ifdef CONFIG_LIBNL3_ROUTE
8555         struct i802_bss *bss = priv;
8556         struct wpa_driver_nl80211_data *drv = bss->drv;
8557         struct rtnl_neigh *rn;
8558         struct nl_addr *nl_ipaddr = NULL;
8559         struct nl_addr *nl_lladdr = NULL;
8560         int family, addrsize;
8561         int res;
8562
8563         if (!ipaddr || prefixlen == 0 || !addr)
8564                 return -EINVAL;
8565
8566         if (bss->br_ifindex == 0) {
8567                 wpa_printf(MSG_DEBUG,
8568                            "nl80211: bridge must be set before adding an ip neigh to it");
8569                 return -1;
8570         }
8571
8572         if (!drv->rtnl_sk) {
8573                 wpa_printf(MSG_DEBUG,
8574                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8575                 return -1;
8576         }
8577
8578         if (version == 4) {
8579                 family = AF_INET;
8580                 addrsize = 4;
8581         } else if (version == 6) {
8582                 family = AF_INET6;
8583                 addrsize = 16;
8584         } else {
8585                 return -EINVAL;
8586         }
8587
8588         rn = rtnl_neigh_alloc();
8589         if (rn == NULL)
8590                 return -ENOMEM;
8591
8592         /* set the destination ip address for neigh */
8593         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8594         if (nl_ipaddr == NULL) {
8595                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8596                 res = -ENOMEM;
8597                 goto errout;
8598         }
8599         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8600         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8601         if (res) {
8602                 wpa_printf(MSG_DEBUG,
8603                            "nl80211: neigh set destination addr failed");
8604                 goto errout;
8605         }
8606
8607         /* set the corresponding lladdr for neigh */
8608         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8609         if (nl_lladdr == NULL) {
8610                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8611                 res = -ENOMEM;
8612                 goto errout;
8613         }
8614         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8615
8616         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8617         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8618
8619         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8620         if (res) {
8621                 wpa_printf(MSG_DEBUG,
8622                            "nl80211: Adding bridge ip neigh failed: %s",
8623                            strerror(errno));
8624         }
8625 errout:
8626         if (nl_lladdr)
8627                 nl_addr_put(nl_lladdr);
8628         if (nl_ipaddr)
8629                 nl_addr_put(nl_ipaddr);
8630         if (rn)
8631                 rtnl_neigh_put(rn);
8632         return res;
8633 #else /* CONFIG_LIBNL3_ROUTE */
8634         return -1;
8635 #endif /* CONFIG_LIBNL3_ROUTE */
8636 }
8637
8638
8639 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8640                                          const u8 *ipaddr)
8641 {
8642 #ifdef CONFIG_LIBNL3_ROUTE
8643         struct i802_bss *bss = priv;
8644         struct wpa_driver_nl80211_data *drv = bss->drv;
8645         struct rtnl_neigh *rn;
8646         struct nl_addr *nl_ipaddr;
8647         int family, addrsize;
8648         int res;
8649
8650         if (!ipaddr)
8651                 return -EINVAL;
8652
8653         if (version == 4) {
8654                 family = AF_INET;
8655                 addrsize = 4;
8656         } else if (version == 6) {
8657                 family = AF_INET6;
8658                 addrsize = 16;
8659         } else {
8660                 return -EINVAL;
8661         }
8662
8663         if (bss->br_ifindex == 0) {
8664                 wpa_printf(MSG_DEBUG,
8665                            "nl80211: bridge must be set to delete an ip neigh");
8666                 return -1;
8667         }
8668
8669         if (!drv->rtnl_sk) {
8670                 wpa_printf(MSG_DEBUG,
8671                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8672                 return -1;
8673         }
8674
8675         rn = rtnl_neigh_alloc();
8676         if (rn == NULL)
8677                 return -ENOMEM;
8678
8679         /* set the destination ip address for neigh */
8680         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8681         if (nl_ipaddr == NULL) {
8682                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8683                 res = -ENOMEM;
8684                 goto errout;
8685         }
8686         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8687         if (res) {
8688                 wpa_printf(MSG_DEBUG,
8689                            "nl80211: neigh set destination addr failed");
8690                 goto errout;
8691         }
8692
8693         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8694
8695         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8696         if (res) {
8697                 wpa_printf(MSG_DEBUG,
8698                            "nl80211: Deleting bridge ip neigh failed: %s",
8699                            strerror(errno));
8700         }
8701 errout:
8702         if (nl_ipaddr)
8703                 nl_addr_put(nl_ipaddr);
8704         if (rn)
8705                 rtnl_neigh_put(rn);
8706         return res;
8707 #else /* CONFIG_LIBNL3_ROUTE */
8708         return -1;
8709 #endif /* CONFIG_LIBNL3_ROUTE */
8710 }
8711
8712
8713 static int linux_write_system_file(const char *path, unsigned int val)
8714 {
8715         char buf[50];
8716         int fd, len;
8717
8718         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8719         if (os_snprintf_error(sizeof(buf), len))
8720                 return -1;
8721
8722         fd = open(path, O_WRONLY);
8723         if (fd < 0)
8724                 return -1;
8725
8726         if (write(fd, buf, len) < 0) {
8727                 wpa_printf(MSG_DEBUG,
8728                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8729                            path, val);
8730                 close(fd);
8731                 return -1;
8732         }
8733         close(fd);
8734
8735         return 0;
8736 }
8737
8738
8739 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8740 {
8741         switch (attr) {
8742         case DRV_BR_PORT_ATTR_PROXYARP:
8743                 return "proxyarp_wifi";
8744         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8745                 return "hairpin_mode";
8746         }
8747
8748         return NULL;
8749 }
8750
8751
8752 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8753                                        unsigned int val)
8754 {
8755         struct i802_bss *bss = priv;
8756         char path[128];
8757         const char *attr_txt;
8758
8759         attr_txt = drv_br_port_attr_str(attr);
8760         if (attr_txt == NULL)
8761                 return -EINVAL;
8762
8763         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8764                     bss->ifname, attr_txt);
8765
8766         if (linux_write_system_file(path, val))
8767                 return -1;
8768
8769         return 0;
8770 }
8771
8772
8773 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8774 {
8775         switch (param) {
8776         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8777                 return "arp_accept";
8778         default:
8779                 return NULL;
8780         }
8781 }
8782
8783
8784 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8785                                        unsigned int val)
8786 {
8787         struct i802_bss *bss = priv;
8788         char path[128];
8789         const char *param_txt;
8790         int ip_version = 4;
8791
8792         if (param == DRV_BR_MULTICAST_SNOOPING) {
8793                 os_snprintf(path, sizeof(path),
8794                             "/sys/devices/virtual/net/%s/bridge/multicast_snooping",
8795                             bss->brname);
8796                 goto set_val;
8797         }
8798
8799         param_txt = drv_br_net_param_str(param);
8800         if (param_txt == NULL)
8801                 return -EINVAL;
8802
8803         switch (param) {
8804                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8805                         ip_version = 4;
8806                         break;
8807                 default:
8808                         return -EINVAL;
8809         }
8810
8811         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8812                     ip_version, bss->brname, param_txt);
8813
8814 set_val:
8815         if (linux_write_system_file(path, val))
8816                 return -1;
8817
8818         return 0;
8819 }
8820
8821
8822 #ifdef CONFIG_DRIVER_NL80211_QCA
8823
8824 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8825 {
8826         switch (hw_mode) {
8827         case HOSTAPD_MODE_IEEE80211B:
8828                 return QCA_ACS_MODE_IEEE80211B;
8829         case HOSTAPD_MODE_IEEE80211G:
8830                 return QCA_ACS_MODE_IEEE80211G;
8831         case HOSTAPD_MODE_IEEE80211A:
8832                 return QCA_ACS_MODE_IEEE80211A;
8833         case HOSTAPD_MODE_IEEE80211AD:
8834                 return QCA_ACS_MODE_IEEE80211AD;
8835         case HOSTAPD_MODE_IEEE80211ANY:
8836                 return QCA_ACS_MODE_IEEE80211ANY;
8837         default:
8838                 return -1;
8839         }
8840 }
8841
8842
8843 static int add_acs_freq_list(struct nl_msg *msg, const int *freq_list)
8844 {
8845         int i, len, ret;
8846         u32 *freqs;
8847
8848         if (!freq_list)
8849                 return 0;
8850         len = int_array_len(freq_list);
8851         freqs = os_malloc(sizeof(u32) * len);
8852         if (!freqs)
8853                 return -1;
8854         for (i = 0; i < len; i++)
8855                 freqs[i] = freq_list[i];
8856         ret = nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_FREQ_LIST,
8857                       sizeof(u32) * len, freqs);
8858         os_free(freqs);
8859         return ret;
8860 }
8861
8862
8863 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8864 {
8865         struct i802_bss *bss = priv;
8866         struct wpa_driver_nl80211_data *drv = bss->drv;
8867         struct nl_msg *msg;
8868         struct nlattr *data;
8869         int ret;
8870         int mode;
8871
8872         mode = hw_mode_to_qca_acs(params->hw_mode);
8873         if (mode < 0)
8874                 return -1;
8875
8876         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8877             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8878             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8879                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8880             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8881             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8882             (params->ht_enabled &&
8883              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8884             (params->ht40_enabled &&
8885              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED)) ||
8886             (params->vht_enabled &&
8887              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_VHT_ENABLED)) ||
8888             nla_put_u16(msg, QCA_WLAN_VENDOR_ATTR_ACS_CHWIDTH,
8889                         params->ch_width) ||
8890             (params->ch_list_len &&
8891              nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_CH_LIST, params->ch_list_len,
8892                      params->ch_list)) ||
8893             add_acs_freq_list(msg, params->freq_list)) {
8894                 nlmsg_free(msg);
8895                 return -ENOBUFS;
8896         }
8897         nla_nest_end(msg, data);
8898
8899         wpa_printf(MSG_DEBUG,
8900                    "nl80211: ACS Params: HW_MODE: %d HT: %d HT40: %d VHT: %d BW: %d CH_LIST_LEN: %u",
8901                    params->hw_mode, params->ht_enabled, params->ht40_enabled,
8902                    params->vht_enabled, params->ch_width, params->ch_list_len);
8903
8904         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8905         if (ret) {
8906                 wpa_printf(MSG_DEBUG,
8907                            "nl80211: Failed to invoke driver ACS function: %s",
8908                            strerror(errno));
8909         }
8910         return ret;
8911 }
8912
8913
8914 static int nl80211_set_band(void *priv, enum set_band band)
8915 {
8916         struct i802_bss *bss = priv;
8917         struct wpa_driver_nl80211_data *drv = bss->drv;
8918         struct nl_msg *msg;
8919         struct nlattr *data;
8920         int ret;
8921         enum qca_set_band qca_band;
8922
8923         if (!drv->setband_vendor_cmd_avail)
8924                 return -1;
8925
8926         switch (band) {
8927         case WPA_SETBAND_AUTO:
8928                 qca_band = QCA_SETBAND_AUTO;
8929                 break;
8930         case WPA_SETBAND_5G:
8931                 qca_band = QCA_SETBAND_5G;
8932                 break;
8933         case WPA_SETBAND_2G:
8934                 qca_band = QCA_SETBAND_2G;
8935                 break;
8936         default:
8937                 return -1;
8938         }
8939
8940         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8941             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8942             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8943                         QCA_NL80211_VENDOR_SUBCMD_SETBAND) ||
8944             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8945             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_SETBAND_VALUE, qca_band)) {
8946                 nlmsg_free(msg);
8947                 return -ENOBUFS;
8948         }
8949         nla_nest_end(msg, data);
8950
8951         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8952         if (ret) {
8953                 wpa_printf(MSG_DEBUG,
8954                            "nl80211: Driver setband function failed: %s",
8955                            strerror(errno));
8956         }
8957         return ret;
8958 }
8959
8960
8961 struct nl80211_pcl {
8962         unsigned int num;
8963         unsigned int *freq_list;
8964 };
8965
8966 static int preferred_freq_info_handler(struct nl_msg *msg, void *arg)
8967 {
8968         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8969         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8970         struct nl80211_pcl *param = arg;
8971         struct nlattr *nl_vend, *attr;
8972         enum qca_iface_type iface_type;
8973         struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
8974         unsigned int num, max_num;
8975         u32 *freqs;
8976
8977         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8978                   genlmsg_attrlen(gnlh, 0), NULL);
8979
8980         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
8981         if (!nl_vend)
8982                 return NL_SKIP;
8983
8984         nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
8985                   nla_data(nl_vend), nla_len(nl_vend), NULL);
8986
8987         attr = tb_vendor[
8988                 QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE];
8989         if (!attr) {
8990                 wpa_printf(MSG_ERROR, "nl80211: iface_type couldn't be found");
8991                 param->num = 0;
8992                 return NL_SKIP;
8993         }
8994
8995         iface_type = (enum qca_iface_type) nla_get_u32(attr);
8996         wpa_printf(MSG_DEBUG, "nl80211: Driver returned iface_type=%d",
8997                    iface_type);
8998
8999         attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST];
9000         if (!attr) {
9001                 wpa_printf(MSG_ERROR,
9002                            "nl80211: preferred_freq_list couldn't be found");
9003                 param->num = 0;
9004                 return NL_SKIP;
9005         }
9006
9007         /*
9008          * param->num has the maximum number of entries for which there
9009          * is room in the freq_list provided by the caller.
9010          */
9011         freqs = nla_data(attr);
9012         max_num = nla_len(attr) / sizeof(u32);
9013         if (max_num > param->num)
9014                 max_num = param->num;
9015         for (num = 0; num < max_num; num++)
9016                 param->freq_list[num] = freqs[num];
9017         param->num = num;
9018
9019         return NL_SKIP;
9020 }
9021
9022
9023 static int nl80211_get_pref_freq_list(void *priv,
9024                                       enum wpa_driver_if_type if_type,
9025                                       unsigned int *num,
9026                                       unsigned int *freq_list)
9027 {
9028         struct i802_bss *bss = priv;
9029         struct wpa_driver_nl80211_data *drv = bss->drv;
9030         struct nl_msg *msg;
9031         int ret;
9032         unsigned int i;
9033         struct nlattr *params;
9034         struct nl80211_pcl param;
9035         enum qca_iface_type iface_type;
9036
9037         if (!drv->get_pref_freq_list)
9038                 return -1;
9039
9040         switch (if_type) {
9041         case WPA_IF_STATION:
9042                 iface_type = QCA_IFACE_TYPE_STA;
9043                 break;
9044         case WPA_IF_AP_BSS:
9045                 iface_type = QCA_IFACE_TYPE_AP;
9046                 break;
9047         case WPA_IF_P2P_GO:
9048                 iface_type = QCA_IFACE_TYPE_P2P_GO;
9049                 break;
9050         case WPA_IF_P2P_CLIENT:
9051                 iface_type = QCA_IFACE_TYPE_P2P_CLIENT;
9052                 break;
9053         case WPA_IF_IBSS:
9054                 iface_type = QCA_IFACE_TYPE_IBSS;
9055                 break;
9056         case WPA_IF_TDLS:
9057                 iface_type = QCA_IFACE_TYPE_TDLS;
9058                 break;
9059         default:
9060                 return -1;
9061         }
9062
9063         param.num = *num;
9064         param.freq_list = freq_list;
9065
9066         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9067             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
9068             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9069             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9070                         QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST) ||
9071             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9072             nla_put_u32(msg,
9073                         QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE,
9074                         iface_type)) {
9075                 wpa_printf(MSG_ERROR,
9076                            "%s: err in adding vendor_cmd and vendor_data",
9077                            __func__);
9078                 nlmsg_free(msg);
9079                 return -1;
9080         }
9081         nla_nest_end(msg, params);
9082
9083         os_memset(freq_list, 0, *num * sizeof(freq_list[0]));
9084         ret = send_and_recv_msgs(drv, msg, preferred_freq_info_handler, &param);
9085         if (ret) {
9086                 wpa_printf(MSG_ERROR,
9087                            "%s: err in send_and_recv_msgs", __func__);
9088                 return ret;
9089         }
9090
9091         *num = param.num;
9092
9093         for (i = 0; i < *num; i++) {
9094                 wpa_printf(MSG_DEBUG, "nl80211: preferred_channel_list[%d]=%d",
9095                            i, freq_list[i]);
9096         }
9097
9098         return 0;
9099 }
9100
9101
9102 static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
9103 {
9104         struct i802_bss *bss = priv;
9105         struct wpa_driver_nl80211_data *drv = bss->drv;
9106         struct nl_msg *msg;
9107         int ret;
9108         struct nlattr *params;
9109
9110         if (!drv->set_prob_oper_freq)
9111                 return -1;
9112
9113         wpa_printf(MSG_DEBUG,
9114                    "nl80211: Set P2P probable operating freq %u for ifindex %d",
9115                    freq, bss->ifindex);
9116
9117         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9118             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9119             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9120                         QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL) ||
9121             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9122             nla_put_u32(msg,
9123                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_IFACE_TYPE,
9124                         QCA_IFACE_TYPE_P2P_CLIENT) ||
9125             nla_put_u32(msg,
9126                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_FREQ,
9127                         freq)) {
9128                 wpa_printf(MSG_ERROR,
9129                            "%s: err in adding vendor_cmd and vendor_data",
9130                            __func__);
9131                 nlmsg_free(msg);
9132                 return -1;
9133         }
9134         nla_nest_end(msg, params);
9135
9136         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9137         msg = NULL;
9138         if (ret) {
9139                 wpa_printf(MSG_ERROR, "%s: err in send_and_recv_msgs",
9140                            __func__);
9141                 return ret;
9142         }
9143         nlmsg_free(msg);
9144         return 0;
9145 }
9146
9147
9148 static int nl80211_p2p_lo_start(void *priv, unsigned int freq,
9149                                 unsigned int period, unsigned int interval,
9150                                 unsigned int count, const u8 *device_types,
9151                                 size_t dev_types_len,
9152                                 const u8 *ies, size_t ies_len)
9153 {
9154         struct i802_bss *bss = priv;
9155         struct wpa_driver_nl80211_data *drv = bss->drv;
9156         struct nl_msg *msg;
9157         struct nlattr *container;
9158         int ret;
9159
9160         wpa_printf(MSG_DEBUG,
9161                    "nl80211: Start P2P Listen offload: freq=%u, period=%u, interval=%u, count=%u",
9162                    freq, period, interval, count);
9163
9164         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD))
9165                 return -1;
9166
9167         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9168             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9169             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9170                         QCA_NL80211_VENDOR_SUBCMD_P2P_LISTEN_OFFLOAD_START))
9171                 goto fail;
9172
9173         container = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
9174         if (!container)
9175                 goto fail;
9176
9177         if (nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_CHANNEL,
9178                         freq) ||
9179             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_PERIOD,
9180                         period) ||
9181             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_INTERVAL,
9182                         interval) ||
9183             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_COUNT,
9184                         count) ||
9185             nla_put(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_DEVICE_TYPES,
9186                     dev_types_len, device_types) ||
9187             nla_put(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_VENDOR_IE,
9188                     ies_len, ies))
9189                 goto fail;
9190
9191         nla_nest_end(msg, container);
9192         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9193         msg = NULL;
9194         if (ret) {
9195                 wpa_printf(MSG_DEBUG,
9196                            "nl80211: Failed to send P2P Listen offload vendor command");
9197                 goto fail;
9198         }
9199
9200         return 0;
9201
9202 fail:
9203         nlmsg_free(msg);
9204         return -1;
9205 }
9206
9207
9208 static int nl80211_p2p_lo_stop(void *priv)
9209 {
9210         struct i802_bss *bss = priv;
9211         struct wpa_driver_nl80211_data *drv = bss->drv;
9212         struct nl_msg *msg;
9213
9214         wpa_printf(MSG_DEBUG, "nl80211: Stop P2P Listen offload");
9215
9216         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD))
9217                 return -1;
9218
9219         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9220             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9221             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9222                         QCA_NL80211_VENDOR_SUBCMD_P2P_LISTEN_OFFLOAD_STOP)) {
9223                 nlmsg_free(msg);
9224                 return -1;
9225         }
9226
9227         return send_and_recv_msgs(drv, msg, NULL, NULL);
9228 }
9229
9230 #endif /* CONFIG_DRIVER_NL80211_QCA */
9231
9232
9233 static int nl80211_write_to_file(const char *name, unsigned int val)
9234 {
9235         int fd, len;
9236         char tmp[128];
9237
9238         fd = open(name, O_RDWR);
9239         if (fd < 0) {
9240                 wpa_printf(MSG_ERROR, "nl80211: Failed to open %s: %s",
9241                            name, strerror(errno));
9242                 return fd;
9243         }
9244
9245         len = os_snprintf(tmp, sizeof(tmp), "%u\n", val);
9246         len = write(fd, tmp, len);
9247         if (len < 0)
9248                 wpa_printf(MSG_ERROR, "nl80211: Failed to write to %s: %s",
9249                            name, strerror(errno));
9250         close(fd);
9251
9252         return 0;
9253 }
9254
9255
9256 static int nl80211_configure_data_frame_filters(void *priv, u32 filter_flags)
9257 {
9258         struct i802_bss *bss = priv;
9259         char path[128];
9260         int ret;
9261
9262         wpa_printf(MSG_DEBUG, "nl80211: Data frame filter flags=0x%x",
9263                    filter_flags);
9264
9265         /* Configure filtering of unicast frame encrypted using GTK */
9266         ret = os_snprintf(path, sizeof(path),
9267                           "/proc/sys/net/ipv4/conf/%s/drop_unicast_in_l2_multicast",
9268                           bss->ifname);
9269         if (os_snprintf_error(sizeof(path), ret))
9270                 return -1;
9271
9272         ret = nl80211_write_to_file(path,
9273                                     !!(filter_flags &
9274                                        WPA_DATA_FRAME_FILTER_FLAG_GTK));
9275         if (ret) {
9276                 wpa_printf(MSG_ERROR,
9277                            "nl80211: Failed to set IPv4 unicast in multicast filter");
9278                 return ret;
9279         }
9280
9281         os_snprintf(path, sizeof(path),
9282                     "/proc/sys/net/ipv6/conf/%s/drop_unicast_in_l2_multicast",
9283                     bss->ifname);
9284         ret = nl80211_write_to_file(path,
9285                                     !!(filter_flags &
9286                                        WPA_DATA_FRAME_FILTER_FLAG_GTK));
9287
9288         if (ret) {
9289                 wpa_printf(MSG_ERROR,
9290                            "nl80211: Failed to set IPv6 unicast in multicast filter");
9291                 return ret;
9292         }
9293
9294         /* Configure filtering of unicast frame encrypted using GTK */
9295         os_snprintf(path, sizeof(path),
9296                     "/proc/sys/net/ipv4/conf/%s/drop_gratuitous_arp",
9297                     bss->ifname);
9298         ret = nl80211_write_to_file(path,
9299                                     !!(filter_flags &
9300                                        WPA_DATA_FRAME_FILTER_FLAG_ARP));
9301         if (ret) {
9302                 wpa_printf(MSG_ERROR,
9303                            "nl80211: Failed set gratuitous ARP filter");
9304                 return ret;
9305         }
9306
9307         /* Configure filtering of IPv6 NA frames */
9308         os_snprintf(path, sizeof(path),
9309                     "/proc/sys/net/ipv6/conf/%s/drop_unsolicited_na",
9310                     bss->ifname);
9311         ret = nl80211_write_to_file(path,
9312                                     !!(filter_flags &
9313                                        WPA_DATA_FRAME_FILTER_FLAG_NA));
9314         if (ret) {
9315                 wpa_printf(MSG_ERROR,
9316                            "nl80211: Failed to set unsolicited NA filter");
9317                 return ret;
9318         }
9319
9320         return 0;
9321 }
9322
9323
9324 static int nl80211_get_ext_capab(void *priv, enum wpa_driver_if_type type,
9325                                  const u8 **ext_capa, const u8 **ext_capa_mask,
9326                                  unsigned int *ext_capa_len)
9327 {
9328         struct i802_bss *bss = priv;
9329         struct wpa_driver_nl80211_data *drv = bss->drv;
9330         enum nl80211_iftype nlmode;
9331         unsigned int i;
9332
9333         if (!ext_capa || !ext_capa_mask || !ext_capa_len)
9334                 return -1;
9335
9336         nlmode = wpa_driver_nl80211_if_type(type);
9337
9338         /* By default, use the per-radio values */
9339         *ext_capa = drv->extended_capa;
9340         *ext_capa_mask = drv->extended_capa_mask;
9341         *ext_capa_len = drv->extended_capa_len;
9342
9343         /* Replace the default value if a per-interface type value exists */
9344         for (i = 0; i < drv->num_iface_ext_capa; i++) {
9345                 if (nlmode == drv->iface_ext_capa[i].iftype) {
9346                         *ext_capa = drv->iface_ext_capa[i].ext_capa;
9347                         *ext_capa_mask = drv->iface_ext_capa[i].ext_capa_mask;
9348                         *ext_capa_len = drv->iface_ext_capa[i].ext_capa_len;
9349                         break;
9350                 }
9351         }
9352
9353         return 0;
9354 }
9355
9356
9357 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9358         .name = "nl80211",
9359         .desc = "Linux nl80211/cfg80211",
9360         .get_bssid = wpa_driver_nl80211_get_bssid,
9361         .get_ssid = wpa_driver_nl80211_get_ssid,
9362         .set_key = driver_nl80211_set_key,
9363         .scan2 = driver_nl80211_scan2,
9364         .sched_scan = wpa_driver_nl80211_sched_scan,
9365         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9366         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9367         .abort_scan = wpa_driver_nl80211_abort_scan,
9368         .deauthenticate = driver_nl80211_deauthenticate,
9369         .authenticate = driver_nl80211_authenticate,
9370         .associate = wpa_driver_nl80211_associate,
9371         .global_init = nl80211_global_init,
9372         .global_deinit = nl80211_global_deinit,
9373         .init2 = wpa_driver_nl80211_init,
9374         .deinit = driver_nl80211_deinit,
9375         .get_capa = wpa_driver_nl80211_get_capa,
9376         .set_operstate = wpa_driver_nl80211_set_operstate,
9377         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9378         .set_country = wpa_driver_nl80211_set_country,
9379         .get_country = wpa_driver_nl80211_get_country,
9380         .set_ap = wpa_driver_nl80211_set_ap,
9381         .set_acl = wpa_driver_nl80211_set_acl,
9382         .if_add = wpa_driver_nl80211_if_add,
9383         .if_remove = driver_nl80211_if_remove,
9384         .send_mlme = driver_nl80211_send_mlme,
9385         .get_hw_feature_data = nl80211_get_hw_feature_data,
9386         .sta_add = wpa_driver_nl80211_sta_add,
9387         .sta_remove = driver_nl80211_sta_remove,
9388         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9389         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9390         .hapd_init = i802_init,
9391         .hapd_deinit = i802_deinit,
9392         .set_wds_sta = i802_set_wds_sta,
9393         .get_seqnum = i802_get_seqnum,
9394         .flush = i802_flush,
9395         .get_inact_sec = i802_get_inact_sec,
9396         .sta_clear_stats = i802_sta_clear_stats,
9397         .set_rts = i802_set_rts,
9398         .set_frag = i802_set_frag,
9399         .set_tx_queue_params = i802_set_tx_queue_params,
9400         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9401         .sta_deauth = i802_sta_deauth,
9402         .sta_disassoc = i802_sta_disassoc,
9403         .read_sta_data = driver_nl80211_read_sta_data,
9404         .set_freq = i802_set_freq,
9405         .send_action = driver_nl80211_send_action,
9406         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9407         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9408         .cancel_remain_on_channel =
9409         wpa_driver_nl80211_cancel_remain_on_channel,
9410         .probe_req_report = driver_nl80211_probe_req_report,
9411         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9412         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9413         .resume = wpa_driver_nl80211_resume,
9414         .signal_monitor = nl80211_signal_monitor,
9415         .signal_poll = nl80211_signal_poll,
9416         .send_frame = nl80211_send_frame,
9417         .set_param = nl80211_set_param,
9418         .get_radio_name = nl80211_get_radio_name,
9419         .add_pmkid = nl80211_add_pmkid,
9420         .remove_pmkid = nl80211_remove_pmkid,
9421         .flush_pmkid = nl80211_flush_pmkid,
9422         .set_rekey_info = nl80211_set_rekey_info,
9423         .poll_client = nl80211_poll_client,
9424         .set_p2p_powersave = nl80211_set_p2p_powersave,
9425         .start_dfs_cac = nl80211_start_radar_detection,
9426         .stop_ap = wpa_driver_nl80211_stop_ap,
9427 #ifdef CONFIG_TDLS
9428         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9429         .tdls_oper = nl80211_tdls_oper,
9430         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
9431         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
9432 #endif /* CONFIG_TDLS */
9433         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9434         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9435         .get_survey = wpa_driver_nl80211_get_survey,
9436         .status = wpa_driver_nl80211_status,
9437         .switch_channel = nl80211_switch_channel,
9438 #ifdef ANDROID_P2P
9439         .set_noa = wpa_driver_set_p2p_noa,
9440         .get_noa = wpa_driver_get_p2p_noa,
9441         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9442 #endif /* ANDROID_P2P */
9443 #ifdef ANDROID
9444 #ifndef ANDROID_LIB_STUB
9445         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9446 #endif /* !ANDROID_LIB_STUB */
9447 #endif /* ANDROID */
9448         .vendor_cmd = nl80211_vendor_cmd,
9449         .set_qos_map = nl80211_set_qos_map,
9450         .set_wowlan = nl80211_set_wowlan,
9451         .set_mac_addr = nl80211_set_mac_addr,
9452 #ifdef CONFIG_MESH
9453         .init_mesh = wpa_driver_nl80211_init_mesh,
9454         .join_mesh = wpa_driver_nl80211_join_mesh,
9455         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9456 #endif /* CONFIG_MESH */
9457         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9458         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9459         .br_port_set_attr = wpa_driver_br_port_set_attr,
9460         .br_set_net_param = wpa_driver_br_set_net_param,
9461         .add_tx_ts = nl80211_add_ts,
9462         .del_tx_ts = nl80211_del_ts,
9463         .get_ifindex = nl80211_get_ifindex,
9464 #ifdef CONFIG_DRIVER_NL80211_QCA
9465         .roaming = nl80211_roaming,
9466         .do_acs = wpa_driver_do_acs,
9467         .set_band = nl80211_set_band,
9468         .get_pref_freq_list = nl80211_get_pref_freq_list,
9469         .set_prob_oper_freq = nl80211_set_prob_oper_freq,
9470         .p2p_lo_start = nl80211_p2p_lo_start,
9471         .p2p_lo_stop = nl80211_p2p_lo_stop,
9472 #endif /* CONFIG_DRIVER_NL80211_QCA */
9473         .configure_data_frame_filters = nl80211_configure_data_frame_filters,
9474         .get_ext_capab = nl80211_get_ext_capab,
9475 };