src/drivers/driver_nl80211.c

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