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
 168 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 169 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 170                                             struct hostapd_freq_params *freq);
 171
 172 static int
 173 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 174                                    const u8 *set_addr, int first,
 175                                    const char *driver_params);
 176 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 177                                   unsigned int freq, unsigned int wait,
 178                                   const u8 *buf, size_t buf_len, u64 *cookie,
 179                                   int no_cck, int no_ack, int offchanok);
 180 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 181                                                int report);
 182
 183 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 184 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 185 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 186
 187 static int nl80211_set_channel(struct i802_bss *bss,
 188                                struct hostapd_freq_params *freq, int set_chan);
 189 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 190                                      int ifindex, int disabled);
 191
 192 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 193                               int reset_mode);
 194
 195 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 196 static int nl80211_set_param(void *priv, const char *param);
 197
 198
 199 /* Converts nl80211_chan_width to a common format */
 200 enum chan_width convert2width(int width)
 201 {
 202         switch (width) {
 203         case NL80211_CHAN_WIDTH_20_NOHT:
 204                 return CHAN_WIDTH_20_NOHT;
 205         case NL80211_CHAN_WIDTH_20:
 206                 return CHAN_WIDTH_20;
 207         case NL80211_CHAN_WIDTH_40:
 208                 return CHAN_WIDTH_40;
 209         case NL80211_CHAN_WIDTH_80:
 210                 return CHAN_WIDTH_80;
 211         case NL80211_CHAN_WIDTH_80P80:
 212                 return CHAN_WIDTH_80P80;
 213         case NL80211_CHAN_WIDTH_160:
 214                 return CHAN_WIDTH_160;
 215         }
 216         return CHAN_WIDTH_UNKNOWN;
 217 }
 218
 219
 220 int is_ap_interface(enum nl80211_iftype nlmode)
 221 {
 222         return nlmode == NL80211_IFTYPE_AP ||
 223                 nlmode == NL80211_IFTYPE_P2P_GO;
 224 }
 225
 226
 227 int is_sta_interface(enum nl80211_iftype nlmode)
 228 {
 229         return nlmode == NL80211_IFTYPE_STATION ||
 230                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 231 }
 232
 233
 234 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 235 {
 236         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 237                 nlmode == NL80211_IFTYPE_P2P_GO;
 238 }
 239
 240
 241 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 242                                   int ifindex)
 243 {
 244         struct i802_bss *bss;
 245
 246         for (bss = drv->first_bss; bss; bss = bss->next) {
 247                 if (bss->ifindex == ifindex)
 248                         return bss;
 249         }
 250
 251         return NULL;
 252 }
 253
 254
 255 static int is_mesh_interface(enum nl80211_iftype nlmode)
 256 {
 257         return nlmode == NL80211_IFTYPE_MESH_POINT;
 258 }
 259
 260
 261 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 262 {
 263         if (drv->associated)
 264                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 265         drv->associated = 0;
 266         os_memset(drv->bssid, 0, ETH_ALEN);
 267 }
 268
 269
 270 /* nl80211 code */
 271 static int ack_handler(struct nl_msg *msg, void *arg)
 272 {
 273         int *err = arg;
 274         *err = 0;
 275         return NL_STOP;
 276 }
 277
 278 static int finish_handler(struct nl_msg *msg, void *arg)
 279 {
 280         int *ret = arg;
 281         *ret = 0;
 282         return NL_SKIP;
 283 }
 284
 285 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 286                          void *arg)
 287 {
 288         int *ret = arg;
 289         *ret = err->error;
 290         return NL_SKIP;
 291 }
 292
 293
 294 static int no_seq_check(struct nl_msg *msg, void *arg)
 295 {
 296         return NL_OK;
 297 }
 298
 299
 300 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 301 {
 302         /*
 303          * Clear nlmsg data, e.g., to make sure key material is not left in
 304          * heap memory for unnecessarily long time.
 305          */
 306         if (msg) {
 307                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 308                 void *data = nlmsg_data(hdr);
 309                 /*
 310                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 311                  * only libnl were to maintain a stable API.. Neither will work
 312                  * with all released versions, so just calculate the length
 313                  * here.
 314                  */
 315                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 316
 317                 os_memset(data, 0, len);
 318         }
 319 }
 320
 321
 322 static int send_and_recv(struct nl80211_global *global,
 323                          struct nl_handle *nl_handle, struct nl_msg *msg,
 324                          int (*valid_handler)(struct nl_msg *, void *),
 325                          void *valid_data)
 326 {
 327         struct nl_cb *cb;
 328         int err = -ENOMEM;
 329
 330         if (!msg)
 331                 return -ENOMEM;
 332
 333         cb = nl_cb_clone(global->nl_cb);
 334         if (!cb)
 335                 goto out;
 336
 337         err = nl_send_auto_complete(nl_handle, msg);
 338         if (err < 0)
 339                 goto out;
 340
 341         err = 1;
 342
 343         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 344         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 345         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 346
 347         if (valid_handler)
 348                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 349                           valid_handler, valid_data);
 350
 351         while (err > 0) {
 352                 int res = nl_recvmsgs(nl_handle, cb);
 353                 if (res < 0) {
 354                         wpa_printf(MSG_INFO,
 355                                    "nl80211: %s->nl_recvmsgs failed: %d",
 356                                    __func__, res);
 357                 }
 358         }
 359  out:
 360         nl_cb_put(cb);
 361         if (!valid_handler && valid_data == (void *) -1)
 362                 nl80211_nlmsg_clear(msg);
 363         nlmsg_free(msg);
 364         return err;
 365 }
 366
 367
 368 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 369                        struct nl_msg *msg,
 370                        int (*valid_handler)(struct nl_msg *, void *),
 371                        void *valid_data)
 372 {
 373         return send_and_recv(drv->global, drv->global->nl, msg,
 374                              valid_handler, valid_data);
 375 }
 376
 377
 378 struct family_data {
 379         const char *group;
 380         int id;
 381 };
 382
 383
 384 static int family_handler(struct nl_msg *msg, void *arg)
 385 {
 386         struct family_data *res = arg;
 387         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 388         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 389         struct nlattr *mcgrp;
 390         int i;
 391
 392         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 393                   genlmsg_attrlen(gnlh, 0), NULL);
 394         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 395                 return NL_SKIP;
 396
 397         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 398                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 399                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 400                           nla_len(mcgrp), NULL);
 401                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 402                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 403                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 404                                res->group,
 405                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 406                         continue;
 407                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 408                 break;
 409         };
 410
 411         return NL_SKIP;
 412 }
 413
 414
 415 static int nl_get_multicast_id(struct nl80211_global *global,
 416                                const char *family, const char *group)
 417 {
 418         struct nl_msg *msg;
 419         int ret;
 420         struct family_data res = { group, -ENOENT };
 421
 422         msg = nlmsg_alloc();
 423         if (!msg)
 424                 return -ENOMEM;
 425         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 426                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 427             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 428                 nlmsg_free(msg);
 429                 return -1;
 430         }
 431
 432         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 433         if (ret == 0)
 434                 ret = res.id;
 435         return ret;
 436 }
 437
 438
 439 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 440                    struct nl_msg *msg, int flags, uint8_t cmd)
 441 {
 442         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 443                            0, flags, cmd, 0);
 444 }
 445
 446
 447 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 448 {
 449         if (bss->wdev_id_set)
 450                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 451         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 452 }
 453
 454
 455 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 456 {
 457         struct nl_msg *msg;
 458
 459         msg = nlmsg_alloc();
 460         if (!msg)
 461                 return NULL;
 462
 463         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 464             nl80211_set_iface_id(msg, bss) < 0) {
 465                 nlmsg_free(msg);
 466                 return NULL;
 467         }
 468
 469         return msg;
 470 }
 471
 472
 473 static struct nl_msg *
 474 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 475                     int flags, uint8_t cmd)
 476 {
 477         struct nl_msg *msg;
 478
 479         msg = nlmsg_alloc();
 480         if (!msg)
 481                 return NULL;
 482
 483         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 484             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 485                 nlmsg_free(msg);
 486                 return NULL;
 487         }
 488
 489         return msg;
 490 }
 491
 492
 493 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 494                                 uint8_t cmd)
 495 {
 496         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 497 }
 498
 499
 500 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 501 {
 502         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 503 }
 504
 505
 506 struct wiphy_idx_data {
 507         int wiphy_idx;
 508         enum nl80211_iftype nlmode;
 509         u8 *macaddr;
 510 };
 511
 512
 513 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 514 {
 515         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 516         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 517         struct wiphy_idx_data *info = arg;
 518
 519         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 520                   genlmsg_attrlen(gnlh, 0), NULL);
 521
 522         if (tb[NL80211_ATTR_WIPHY])
 523                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 524
 525         if (tb[NL80211_ATTR_IFTYPE])
 526                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 527
 528         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 529                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 530                           ETH_ALEN);
 531
 532         return NL_SKIP;
 533 }
 534
 535
 536 int nl80211_get_wiphy_index(struct i802_bss *bss)
 537 {
 538         struct nl_msg *msg;
 539         struct wiphy_idx_data data = {
 540                 .wiphy_idx = -1,
 541                 .macaddr = NULL,
 542         };
 543
 544         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 545                 return -1;
 546
 547         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 548                 return data.wiphy_idx;
 549         return -1;
 550 }
 551
 552
 553 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 554 {
 555         struct nl_msg *msg;
 556         struct wiphy_idx_data data = {
 557                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 558                 .macaddr = NULL,
 559         };
 560
 561         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 562                 return NL80211_IFTYPE_UNSPECIFIED;
 563
 564         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 565                 return data.nlmode;
 566         return NL80211_IFTYPE_UNSPECIFIED;
 567 }
 568
 569
 570 static int nl80211_get_macaddr(struct i802_bss *bss)
 571 {
 572         struct nl_msg *msg;
 573         struct wiphy_idx_data data = {
 574                 .macaddr = bss->addr,
 575         };
 576
 577         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 578                 return -1;
 579
 580         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 581 }
 582
 583
 584 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 585                                     struct nl80211_wiphy_data *w)
 586 {
 587         struct nl_msg *msg;
 588         int ret;
 589
 590         msg = nlmsg_alloc();
 591         if (!msg)
 592                 return -1;
 593
 594         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 595             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 596                 nlmsg_free(msg);
 597                 return -1;
 598         }
 599
 600         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 601         if (ret) {
 602                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 603                            "failed: ret=%d (%s)",
 604                            ret, strerror(-ret));
 605         }
 606         return ret;
 607 }
 608
 609
 610 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 611 {
 612         struct nl80211_wiphy_data *w = eloop_ctx;
 613         int res;
 614
 615         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 616
 617         res = nl_recvmsgs(handle, w->nl_cb);
 618         if (res < 0) {
 619                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 620                            __func__, res);
 621         }
 622 }
 623
 624
 625 static int process_beacon_event(struct nl_msg *msg, void *arg)
 626 {
 627         struct nl80211_wiphy_data *w = arg;
 628         struct wpa_driver_nl80211_data *drv;
 629         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 630         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 631         union wpa_event_data event;
 632
 633         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 634                   genlmsg_attrlen(gnlh, 0), NULL);
 635
 636         if (gnlh->cmd != NL80211_CMD_FRAME) {
 637                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 638                            gnlh->cmd);
 639                 return NL_SKIP;
 640         }
 641
 642         if (!tb[NL80211_ATTR_FRAME])
 643                 return NL_SKIP;
 644
 645         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 646                          wiphy_list) {
 647                 os_memset(&event, 0, sizeof(event));
 648                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 649                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 650                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 651         }
 652
 653         return NL_SKIP;
 654 }
 655
 656
 657 static struct nl80211_wiphy_data *
 658 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 659 {
 660         static DEFINE_DL_LIST(nl80211_wiphys);
 661         struct nl80211_wiphy_data *w;
 662         int wiphy_idx, found = 0;
 663         struct i802_bss *tmp_bss;
 664
 665         if (bss->wiphy_data != NULL)
 666                 return bss->wiphy_data;
 667
 668         wiphy_idx = nl80211_get_wiphy_index(bss);
 669
 670         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 671                 if (w->wiphy_idx == wiphy_idx)
 672                         goto add;
 673         }
 674
 675         /* alloc new one */
 676         w = os_zalloc(sizeof(*w));
 677         if (w == NULL)
 678                 return NULL;
 679         w->wiphy_idx = wiphy_idx;
 680         dl_list_init(&w->bsss);
 681         dl_list_init(&w->drvs);
 682
 683         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 684         if (!w->nl_cb) {
 685                 os_free(w);
 686                 return NULL;
 687         }
 688         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 689         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 690                   w);
 691
 692         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 693                                          "wiphy beacons");
 694         if (w->nl_beacons == NULL) {
 695                 os_free(w);
 696                 return NULL;
 697         }
 698
 699         if (nl80211_register_beacons(bss->drv, w)) {
 700                 nl_destroy_handles(&w->nl_beacons);
 701                 os_free(w);
 702                 return NULL;
 703         }
 704
 705         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 706
 707         dl_list_add(&nl80211_wiphys, &w->list);
 708
 709 add:
 710         /* drv entry for this bss already there? */
 711         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 712                 if (tmp_bss->drv == bss->drv) {
 713                         found = 1;
 714                         break;
 715                 }
 716         }
 717         /* if not add it */
 718         if (!found)
 719                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 720
 721         dl_list_add(&w->bsss, &bss->wiphy_list);
 722         bss->wiphy_data = w;
 723         return w;
 724 }
 725
 726
 727 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 728 {
 729         struct nl80211_wiphy_data *w = bss->wiphy_data;
 730         struct i802_bss *tmp_bss;
 731         int found = 0;
 732
 733         if (w == NULL)
 734                 return;
 735         bss->wiphy_data = NULL;
 736         dl_list_del(&bss->wiphy_list);
 737
 738         /* still any for this drv present? */
 739         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 740                 if (tmp_bss->drv == bss->drv) {
 741                         found = 1;
 742                         break;
 743                 }
 744         }
 745         /* if not remove it */
 746         if (!found)
 747                 dl_list_del(&bss->drv->wiphy_list);
 748
 749         if (!dl_list_empty(&w->bsss))
 750                 return;
 751
 752         nl80211_destroy_eloop_handle(&w->nl_beacons);
 753
 754         nl_cb_put(w->nl_cb);
 755         dl_list_del(&w->list);
 756         os_free(w);
 757 }
 758
 759
 760 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 761 {
 762         struct i802_bss *bss = priv;
 763         struct wpa_driver_nl80211_data *drv = bss->drv;
 764         if (!drv->associated)
 765                 return -1;
 766         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 767         return 0;
 768 }
 769
 770
 771 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 772 {
 773         struct i802_bss *bss = priv;
 774         struct wpa_driver_nl80211_data *drv = bss->drv;
 775         if (!drv->associated)
 776                 return -1;
 777         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 778         return drv->ssid_len;
 779 }
 780
 781
 782 static void wpa_driver_nl80211_event_newlink(
 783         struct wpa_driver_nl80211_data *drv, const char *ifname)
 784 {
 785         union wpa_event_data event;
 786
 787         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 788                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 789                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 790                                    drv->first_bss->ifname);
 791                         return;
 792                 }
 793                 if (!drv->if_removed)
 794                         return;
 795                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 796                            drv->first_bss->ifname);
 797                 drv->if_removed = 0;
 798         }
 799
 800         os_memset(&event, 0, sizeof(event));
 801         os_strlcpy(event.interface_status.ifname, ifname,
 802                    sizeof(event.interface_status.ifname));
 803         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 804         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 805 }
 806
 807
 808 static void wpa_driver_nl80211_event_dellink(
 809         struct wpa_driver_nl80211_data *drv, const char *ifname)
 810 {
 811         union wpa_event_data event;
 812
 813         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 814                 if (drv->if_removed) {
 815                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 816                                    ifname);
 817                         return;
 818                 }
 819                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 820                            ifname);
 821                 drv->if_removed = 1;
 822         } else {
 823                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 824                            ifname);
 825         }
 826
 827         os_memset(&event, 0, sizeof(event));
 828         os_strlcpy(event.interface_status.ifname, ifname,
 829                    sizeof(event.interface_status.ifname));
 830         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 831         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 832 }
 833
 834
 835 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 836                                          u8 *buf, size_t len)
 837 {
 838         int attrlen, rta_len;
 839         struct rtattr *attr;
 840
 841         attrlen = len;
 842         attr = (struct rtattr *) buf;
 843
 844         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 845         while (RTA_OK(attr, attrlen)) {
 846                 if (attr->rta_type == IFLA_IFNAME) {
 847                         if (os_strcmp(((char *) attr) + rta_len,
 848                                       drv->first_bss->ifname) == 0)
 849                                 return 1;
 850                         else
 851                                 break;
 852                 }
 853                 attr = RTA_NEXT(attr, attrlen);
 854         }
 855
 856         return 0;
 857 }
 858
 859
 860 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 861                                           int ifindex, u8 *buf, size_t len)
 862 {
 863         if (drv->ifindex == ifindex)
 864                 return 1;
 865
 866         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 867                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 868                            "interface");
 869                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 870                 return 1;
 871         }
 872
 873         return 0;
 874 }
 875
 876
 877 static struct wpa_driver_nl80211_data *
 878 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 879 {
 880         struct wpa_driver_nl80211_data *drv;
 881         dl_list_for_each(drv, &global->interfaces,
 882                          struct wpa_driver_nl80211_data, list) {
 883                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 884                     have_ifidx(drv, idx))
 885                         return drv;
 886         }
 887         return NULL;
 888 }
 889
 890
 891 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 892                                                  struct ifinfomsg *ifi,
 893                                                  u8 *buf, size_t len)
 894 {
 895         struct nl80211_global *global = ctx;
 896         struct wpa_driver_nl80211_data *drv;
 897         int attrlen;
 898         struct rtattr *attr;
 899         u32 brid = 0;
 900         char namebuf[IFNAMSIZ];
 901         char ifname[IFNAMSIZ + 1];
 902         char extra[100], *pos, *end;
 903
 904         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 905         if (!drv) {
 906                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 907                            ifi->ifi_index);
 908                 return;
 909         }
 910
 911         extra[0] = '\0';
 912         pos = extra;
 913         end = pos + sizeof(extra);
 914         ifname[0] = '\0';
 915
 916         attrlen = len;
 917         attr = (struct rtattr *) buf;
 918         while (RTA_OK(attr, attrlen)) {
 919                 switch (attr->rta_type) {
 920                 case IFLA_IFNAME:
 921                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 922                                 break;
 923                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 924                         ifname[RTA_PAYLOAD(attr)] = '\0';
 925                         break;
 926                 case IFLA_MASTER:
 927                         brid = nla_get_u32((struct nlattr *) attr);
 928                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 929                         break;
 930                 case IFLA_WIRELESS:
 931                         pos += os_snprintf(pos, end - pos, " wext");
 932                         break;
 933                 case IFLA_OPERSTATE:
 934                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 935                                            nla_get_u32((struct nlattr *) attr));
 936                         break;
 937                 case IFLA_LINKMODE:
 938                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 939                                            nla_get_u32((struct nlattr *) attr));
 940                         break;
 941                 }
 942                 attr = RTA_NEXT(attr, attrlen);
 943         }
 944         extra[sizeof(extra) - 1] = '\0';
 945
 946         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 947                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 948                    ifi->ifi_flags,
 949                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 950                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 951                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 952                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 953
 954         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 955                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 956                     linux_iface_up(drv->global->ioctl_sock,
 957                                    drv->first_bss->ifname) > 0) {
 958                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 959                                    "event since interface %s is up", namebuf);
 960                         drv->ignore_if_down_event = 0;
 961                         return;
 962                 }
 963                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 964                 if (drv->ignore_if_down_event) {
 965                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 966                                    "event generated by mode change");
 967                         drv->ignore_if_down_event = 0;
 968                 } else {
 969                         drv->if_disabled = 1;
 970                         wpa_supplicant_event(drv->ctx,
 971                                              EVENT_INTERFACE_DISABLED, NULL);
 972
 973                         /*
 974                          * Try to get drv again, since it may be removed as
 975                          * part of the EVENT_INTERFACE_DISABLED handling for
 976                          * dynamic interfaces
 977                          */
 978                         drv = nl80211_find_drv(global, ifi->ifi_index,
 979                                                buf, len);
 980                         if (!drv)
 981                                 return;
 982                 }
 983         }
 984
 985         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 986                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 987                     linux_iface_up(drv->global->ioctl_sock,
 988                                    drv->first_bss->ifname) == 0) {
 989                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 990                                    "event since interface %s is down",
 991                                    namebuf);
 992                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 993                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 994                                    "event since interface %s does not exist",
 995                                    drv->first_bss->ifname);
 996                 } else if (drv->if_removed) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 998                                    "event since interface %s is marked "
 999                                    "removed", drv->first_bss->ifname);
1000                 } else {
1001                         struct i802_bss *bss;
1002                         u8 addr[ETH_ALEN];
1003
1004                         /* Re-read MAC address as it may have changed */
1005                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1006                         if (bss &&
1007                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1008                                                bss->ifname, addr) < 0) {
1009                                 wpa_printf(MSG_DEBUG,
1010                                            "nl80211: %s: failed to re-read MAC address",
1011                                            bss->ifname);
1012                         } else if (bss &&
1013                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1014                                 wpa_printf(MSG_DEBUG,
1015                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1016                                            MACSTR " to " MACSTR,
1017                                            ifi->ifi_index, bss->ifname,
1018                                            MAC2STR(bss->addr),
1019                                            MAC2STR(addr));
1020                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1021                         }
1022
1023                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1024                         drv->if_disabled = 0;
1025                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1026                                              NULL);
1027                 }
1028         }
1029
1030         /*
1031          * Some drivers send the association event before the operup event--in
1032          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1033          * fails. This will hit us when wpa_supplicant does not need to do
1034          * IEEE 802.1X authentication
1035          */
1036         if (drv->operstate == 1 &&
1037             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1038             !(ifi->ifi_flags & IFF_RUNNING)) {
1039                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1040                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1041                                        -1, IF_OPER_UP);
1042         }
1043
1044         if (ifname[0])
1045                 wpa_driver_nl80211_event_newlink(drv, ifname);
1046
1047         if (ifi->ifi_family == AF_BRIDGE && brid) {
1048                 struct i802_bss *bss;
1049
1050                 /* device has been added to bridge */
1051                 if (!if_indextoname(brid, namebuf)) {
1052                         wpa_printf(MSG_DEBUG,
1053                                    "nl80211: Could not find bridge ifname for ifindex %u",
1054                                    brid);
1055                         return;
1056                 }
1057                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1058                            brid, namebuf);
1059                 add_ifidx(drv, brid);
1060
1061                 for (bss = drv->first_bss; bss; bss = bss->next) {
1062                         if (os_strcmp(ifname, bss->ifname) == 0) {
1063                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1064                                 break;
1065                         }
1066                 }
1067         }
1068 }
1069
1070
1071 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1072                                                  struct ifinfomsg *ifi,
1073                                                  u8 *buf, size_t len)
1074 {
1075         struct nl80211_global *global = ctx;
1076         struct wpa_driver_nl80211_data *drv;
1077         int attrlen;
1078         struct rtattr *attr;
1079         u32 brid = 0;
1080         char ifname[IFNAMSIZ + 1];
1081         char extra[100], *pos, *end;
1082
1083         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1084         if (!drv) {
1085                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1086                            ifi->ifi_index);
1087                 return;
1088         }
1089
1090         extra[0] = '\0';
1091         pos = extra;
1092         end = pos + sizeof(extra);
1093         ifname[0] = '\0';
1094
1095         attrlen = len;
1096         attr = (struct rtattr *) buf;
1097         while (RTA_OK(attr, attrlen)) {
1098                 switch (attr->rta_type) {
1099                 case IFLA_IFNAME:
1100                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1101                                 break;
1102                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1103                         ifname[RTA_PAYLOAD(attr)] = '\0';
1104                         break;
1105                 case IFLA_MASTER:
1106                         brid = nla_get_u32((struct nlattr *) attr);
1107                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1108                         break;
1109                 case IFLA_OPERSTATE:
1110                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1111                                            nla_get_u32((struct nlattr *) attr));
1112                         break;
1113                 case IFLA_LINKMODE:
1114                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1115                                            nla_get_u32((struct nlattr *) attr));
1116                         break;
1117                 }
1118                 attr = RTA_NEXT(attr, attrlen);
1119         }
1120         extra[sizeof(extra) - 1] = '\0';
1121
1122         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1123                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1124                    ifi->ifi_flags,
1125                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1126                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1127                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1128                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1129
1130         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1131                 wpa_driver_nl80211_event_dellink(drv, ifname);
1132
1133         if (ifi->ifi_family == AF_BRIDGE && brid) {
1134                 /* device has been removed from bridge */
1135                 char namebuf[IFNAMSIZ];
1136
1137                 if (!if_indextoname(brid, namebuf)) {
1138                         wpa_printf(MSG_DEBUG,
1139                                    "nl80211: Could not find bridge ifname for ifindex %u",
1140                                    brid);
1141                 } else {
1142                         wpa_printf(MSG_DEBUG,
1143                                    "nl80211: Remove ifindex %u for bridge %s",
1144                                    brid, namebuf);
1145                 }
1146                 del_ifidx(drv, brid);
1147         }
1148 }
1149
1150
1151 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1152 {
1153         struct nl_msg *msg;
1154         int ret;
1155         struct nl80211_bss_info_arg arg;
1156
1157         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1158         os_memset(&arg, 0, sizeof(arg));
1159         arg.drv = drv;
1160         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1161         if (ret == 0) {
1162                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1163                         arg.ibss_freq : arg.assoc_freq;
1164                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1165                            "associated BSS from scan results: %u MHz", freq);
1166                 if (freq)
1167                         drv->assoc_freq = freq;
1168                 return drv->assoc_freq;
1169         }
1170         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1171                    "(%s)", ret, strerror(-ret));
1172         return drv->assoc_freq;
1173 }
1174
1175
1176 static int get_link_signal(struct nl_msg *msg, void *arg)
1177 {
1178         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1179         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1180         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1181         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1182                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1183                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1184         };
1185         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1186         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1187                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1188                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1189                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1190                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1191         };
1192         struct wpa_signal_info *sig_change = arg;
1193
1194         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1195                   genlmsg_attrlen(gnlh, 0), NULL);
1196         if (!tb[NL80211_ATTR_STA_INFO] ||
1197             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1198                              tb[NL80211_ATTR_STA_INFO], policy))
1199                 return NL_SKIP;
1200         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1201                 return NL_SKIP;
1202
1203         sig_change->current_signal =
1204                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1205
1206         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1207                 sig_change->avg_signal =
1208                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1209         else
1210                 sig_change->avg_signal = 0;
1211
1212         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1213                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1214                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1215                                      rate_policy)) {
1216                         sig_change->current_txrate = 0;
1217                 } else {
1218                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1219                                 sig_change->current_txrate =
1220                                         nla_get_u16(rinfo[
1221                                              NL80211_RATE_INFO_BITRATE]) * 100;
1222                         }
1223                 }
1224         }
1225
1226         return NL_SKIP;
1227 }
1228
1229
1230 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1231                             struct wpa_signal_info *sig)
1232 {
1233         struct nl_msg *msg;
1234
1235         sig->current_signal = -9999;
1236         sig->current_txrate = 0;
1237
1238         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1239             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1240                 nlmsg_free(msg);
1241                 return -ENOBUFS;
1242         }
1243
1244         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1245 }
1246
1247
1248 static int get_link_noise(struct nl_msg *msg, void *arg)
1249 {
1250         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1251         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1252         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1253         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1254                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1255                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1256         };
1257         struct wpa_signal_info *sig_change = arg;
1258
1259         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1260                   genlmsg_attrlen(gnlh, 0), NULL);
1261
1262         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1263                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1264                 return NL_SKIP;
1265         }
1266
1267         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1268                              tb[NL80211_ATTR_SURVEY_INFO],
1269                              survey_policy)) {
1270                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1271                            "attributes!");
1272                 return NL_SKIP;
1273         }
1274
1275         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1276                 return NL_SKIP;
1277
1278         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1279             sig_change->frequency)
1280                 return NL_SKIP;
1281
1282         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1283                 return NL_SKIP;
1284
1285         sig_change->current_noise =
1286                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1287
1288         return NL_SKIP;
1289 }
1290
1291
1292 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1293                            struct wpa_signal_info *sig_change)
1294 {
1295         struct nl_msg *msg;
1296
1297         sig_change->current_noise = 9999;
1298         sig_change->frequency = drv->assoc_freq;
1299
1300         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1301         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1302 }
1303
1304
1305 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1306                                              void *handle)
1307 {
1308         struct nl_cb *cb = eloop_ctx;
1309         int res;
1310
1311         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1312
1313         res = nl_recvmsgs(handle, cb);
1314         if (res < 0) {
1315                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1316                            __func__, res);
1317         }
1318 }
1319
1320
1321 /**
1322  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1323  * @priv: driver_nl80211 private data
1324  * @alpha2_arg: country to which to switch to
1325  * Returns: 0 on success, -1 on failure
1326  *
1327  * This asks nl80211 to set the regulatory domain for given
1328  * country ISO / IEC alpha2.
1329  */
1330 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1331 {
1332         struct i802_bss *bss = priv;
1333         struct wpa_driver_nl80211_data *drv = bss->drv;
1334         char alpha2[3];
1335         struct nl_msg *msg;
1336
1337         msg = nlmsg_alloc();
1338         if (!msg)
1339                 return -ENOMEM;
1340
1341         alpha2[0] = alpha2_arg[0];
1342         alpha2[1] = alpha2_arg[1];
1343         alpha2[2] = '\0';
1344
1345         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1346             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1347                 nlmsg_free(msg);
1348                 return -EINVAL;
1349         }
1350         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1351                 return -EINVAL;
1352         return 0;
1353 }
1354
1355
1356 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1357 {
1358         char *alpha2 = arg;
1359         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1360         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1361
1362         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1363                   genlmsg_attrlen(gnlh, 0), NULL);
1364         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1365                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1366                 return NL_SKIP;
1367         }
1368         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1369         return NL_SKIP;
1370 }
1371
1372
1373 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1374 {
1375         struct i802_bss *bss = priv;
1376         struct wpa_driver_nl80211_data *drv = bss->drv;
1377         struct nl_msg *msg;
1378         int ret;
1379
1380         msg = nlmsg_alloc();
1381         if (!msg)
1382                 return -ENOMEM;
1383
1384         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1385         alpha2[0] = '\0';
1386         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1387         if (!alpha2[0])
1388                 ret = -1;
1389
1390         return ret;
1391 }
1392
1393
1394 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1395 {
1396         int ret;
1397
1398         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1399         if (global->nl_cb == NULL) {
1400                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1401                            "callbacks");
1402                 return -1;
1403         }
1404
1405         global->nl = nl_create_handle(global->nl_cb, "nl");
1406         if (global->nl == NULL)
1407                 goto err;
1408
1409         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1410         if (global->nl80211_id < 0) {
1411                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1412                            "found");
1413                 goto err;
1414         }
1415
1416         global->nl_event = nl_create_handle(global->nl_cb, "event");
1417         if (global->nl_event == NULL)
1418                 goto err;
1419
1420         ret = nl_get_multicast_id(global, "nl80211", "scan");
1421         if (ret >= 0)
1422                 ret = nl_socket_add_membership(global->nl_event, ret);
1423         if (ret < 0) {
1424                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1425                            "membership for scan events: %d (%s)",
1426                            ret, strerror(-ret));
1427                 goto err;
1428         }
1429
1430         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1431         if (ret >= 0)
1432                 ret = nl_socket_add_membership(global->nl_event, ret);
1433         if (ret < 0) {
1434                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1435                            "membership for mlme events: %d (%s)",
1436                            ret, strerror(-ret));
1437                 goto err;
1438         }
1439
1440         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1441         if (ret >= 0)
1442                 ret = nl_socket_add_membership(global->nl_event, ret);
1443         if (ret < 0) {
1444                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1445                            "membership for regulatory events: %d (%s)",
1446                            ret, strerror(-ret));
1447                 /* Continue without regulatory events */
1448         }
1449
1450         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1451         if (ret >= 0)
1452                 ret = nl_socket_add_membership(global->nl_event, ret);
1453         if (ret < 0) {
1454                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1455                            "membership for vendor events: %d (%s)",
1456                            ret, strerror(-ret));
1457                 /* Continue without vendor events */
1458         }
1459
1460         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1461                   no_seq_check, NULL);
1462         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1463                   process_global_event, global);
1464
1465         nl80211_register_eloop_read(&global->nl_event,
1466                                     wpa_driver_nl80211_event_receive,
1467                                     global->nl_cb);
1468
1469         return 0;
1470
1471 err:
1472         nl_destroy_handles(&global->nl_event);
1473         nl_destroy_handles(&global->nl);
1474         nl_cb_put(global->nl_cb);
1475         global->nl_cb = NULL;
1476         return -1;
1477 }
1478
1479
1480 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1481 {
1482         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1483         /*
1484          * This may be for any interface; use ifdown event to disable
1485          * interface.
1486          */
1487 }
1488
1489
1490 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1491 {
1492         struct wpa_driver_nl80211_data *drv = ctx;
1493         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1494         if (i802_set_iface_flags(drv->first_bss, 1)) {
1495                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1496                            "after rfkill unblock");
1497                 return;
1498         }
1499         /* rtnetlink ifup handler will report interface as enabled */
1500 }
1501
1502
1503 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1504                                                       void *eloop_ctx,
1505                                                       void *handle)
1506 {
1507         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1508         u8 data[2048];
1509         struct msghdr msg;
1510         struct iovec entry;
1511         u8 control[512];
1512         struct cmsghdr *cmsg;
1513         int res, found_ee = 0, found_wifi = 0, acked = 0;
1514         union wpa_event_data event;
1515
1516         memset(&msg, 0, sizeof(msg));
1517         msg.msg_iov = &entry;
1518         msg.msg_iovlen = 1;
1519         entry.iov_base = data;
1520         entry.iov_len = sizeof(data);
1521         msg.msg_control = &control;
1522         msg.msg_controllen = sizeof(control);
1523
1524         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1525         /* if error or not fitting 802.3 header, return */
1526         if (res < 14)
1527                 return;
1528
1529         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1530         {
1531                 if (cmsg->cmsg_level == SOL_SOCKET &&
1532                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1533                         int *ack;
1534
1535                         found_wifi = 1;
1536                         ack = (void *)CMSG_DATA(cmsg);
1537                         acked = *ack;
1538                 }
1539
1540                 if (cmsg->cmsg_level == SOL_PACKET &&
1541                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1542                         struct sock_extended_err *err =
1543                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1544
1545                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1546                                 found_ee = 1;
1547                 }
1548         }
1549
1550         if (!found_ee || !found_wifi)
1551                 return;
1552
1553         memset(&event, 0, sizeof(event));
1554         event.eapol_tx_status.dst = data;
1555         event.eapol_tx_status.data = data + 14;
1556         event.eapol_tx_status.data_len = res - 14;
1557         event.eapol_tx_status.ack = acked;
1558         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1559 }
1560
1561
1562 static int nl80211_init_bss(struct i802_bss *bss)
1563 {
1564         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1565         if (!bss->nl_cb)
1566                 return -1;
1567
1568         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1569                   no_seq_check, NULL);
1570         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1571                   process_bss_event, bss);
1572
1573         return 0;
1574 }
1575
1576
1577 static void nl80211_destroy_bss(struct i802_bss *bss)
1578 {
1579         nl_cb_put(bss->nl_cb);
1580         bss->nl_cb = NULL;
1581 }
1582
1583
1584 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1585                                           void *global_priv, int hostapd,
1586                                           const u8 *set_addr,
1587                                           const char *driver_params)
1588 {
1589         struct wpa_driver_nl80211_data *drv;
1590         struct rfkill_config *rcfg;
1591         struct i802_bss *bss;
1592
1593         if (global_priv == NULL)
1594                 return NULL;
1595         drv = os_zalloc(sizeof(*drv));
1596         if (drv == NULL)
1597                 return NULL;
1598         drv->global = global_priv;
1599         drv->ctx = ctx;
1600         drv->hostapd = !!hostapd;
1601         drv->eapol_sock = -1;
1602
1603         /*
1604          * There is no driver capability flag for this, so assume it is
1605          * supported and disable this on first attempt to use if the driver
1606          * rejects the command due to missing support.
1607          */
1608         drv->set_rekey_offload = 1;
1609
1610         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1611         drv->if_indices = drv->default_if_indices;
1612
1613         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1614         if (!drv->first_bss) {
1615                 os_free(drv);
1616                 return NULL;
1617         }
1618         bss = drv->first_bss;
1619         bss->drv = drv;
1620         bss->ctx = ctx;
1621
1622         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1623         drv->monitor_ifidx = -1;
1624         drv->monitor_sock = -1;
1625         drv->eapol_tx_sock = -1;
1626         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1627
1628         if (nl80211_init_bss(bss))
1629                 goto failed;
1630
1631         rcfg = os_zalloc(sizeof(*rcfg));
1632         if (rcfg == NULL)
1633                 goto failed;
1634         rcfg->ctx = drv;
1635         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1636         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1637         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1638         drv->rfkill = rfkill_init(rcfg);
1639         if (drv->rfkill == NULL) {
1640                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1641                 os_free(rcfg);
1642         }
1643
1644         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1645                 drv->start_iface_up = 1;
1646
1647         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1648                 goto failed;
1649
1650         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1651         if (drv->eapol_tx_sock < 0)
1652                 goto failed;
1653
1654         if (drv->data_tx_status) {
1655                 int enabled = 1;
1656
1657                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1658                                &enabled, sizeof(enabled)) < 0) {
1659                         wpa_printf(MSG_DEBUG,
1660                                 "nl80211: wifi status sockopt failed\n");
1661                         drv->data_tx_status = 0;
1662                         if (!drv->use_monitor)
1663                                 drv->capa.flags &=
1664                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1665                 } else {
1666                         eloop_register_read_sock(drv->eapol_tx_sock,
1667                                 wpa_driver_nl80211_handle_eapol_tx_status,
1668                                 drv, NULL);
1669                 }
1670         }
1671
1672         if (drv->global) {
1673                 dl_list_add(&drv->global->interfaces, &drv->list);
1674                 drv->in_interface_list = 1;
1675         }
1676
1677         return bss;
1678
1679 failed:
1680         wpa_driver_nl80211_deinit(bss);
1681         return NULL;
1682 }
1683
1684
1685 /**
1686  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1687  * @ctx: context to be used when calling wpa_supplicant functions,
1688  * e.g., wpa_supplicant_event()
1689  * @ifname: interface name, e.g., wlan0
1690  * @global_priv: private driver global data from global_init()
1691  * Returns: Pointer to private data, %NULL on failure
1692  */
1693 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1694                                       void *global_priv)
1695 {
1696         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1697                                            NULL);
1698 }
1699
1700
1701 static int nl80211_register_frame(struct i802_bss *bss,
1702                                   struct nl_handle *nl_handle,
1703                                   u16 type, const u8 *match, size_t match_len)
1704 {
1705         struct wpa_driver_nl80211_data *drv = bss->drv;
1706         struct nl_msg *msg;
1707         int ret;
1708         char buf[30];
1709
1710         buf[0] = '\0';
1711         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1712         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1713                    type, fc2str(type), nl_handle, buf);
1714
1715         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1716             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1717             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1718                 nlmsg_free(msg);
1719                 return -1;
1720         }
1721
1722         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1723         if (ret) {
1724                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1725                            "failed (type=%u): ret=%d (%s)",
1726                            type, ret, strerror(-ret));
1727                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1728                             match, match_len);
1729         }
1730         return ret;
1731 }
1732
1733
1734 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1735 {
1736         if (bss->nl_mgmt) {
1737                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1738                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1739                 return -1;
1740         }
1741
1742         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1743         if (bss->nl_mgmt == NULL)
1744                 return -1;
1745
1746         return 0;
1747 }
1748
1749
1750 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1751 {
1752         nl80211_register_eloop_read(&bss->nl_mgmt,
1753                                     wpa_driver_nl80211_event_receive,
1754                                     bss->nl_cb);
1755 }
1756
1757
1758 static int nl80211_register_action_frame(struct i802_bss *bss,
1759                                          const u8 *match, size_t match_len)
1760 {
1761         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1762         return nl80211_register_frame(bss, bss->nl_mgmt,
1763                                       type, match, match_len);
1764 }
1765
1766
1767 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1768 {
1769         struct wpa_driver_nl80211_data *drv = bss->drv;
1770         int ret = 0;
1771
1772         if (nl80211_alloc_mgmt_handle(bss))
1773                 return -1;
1774         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1775                    "handle %p", bss->nl_mgmt);
1776
1777         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1778                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1779
1780                 /* register for any AUTH message */
1781                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1782         }
1783
1784 #ifdef CONFIG_INTERWORKING
1785         /* QoS Map Configure */
1786         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1787                 ret = -1;
1788 #endif /* CONFIG_INTERWORKING */
1789 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1790         /* GAS Initial Request */
1791         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1792                 ret = -1;
1793         /* GAS Initial Response */
1794         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1795                 ret = -1;
1796         /* GAS Comeback Request */
1797         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1798                 ret = -1;
1799         /* GAS Comeback Response */
1800         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1801                 ret = -1;
1802         /* Protected GAS Initial Request */
1803         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1804                 ret = -1;
1805         /* Protected GAS Initial Response */
1806         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1807                 ret = -1;
1808         /* Protected GAS Comeback Request */
1809         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1810                 ret = -1;
1811         /* Protected GAS Comeback Response */
1812         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1813                 ret = -1;
1814 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1815 #ifdef CONFIG_P2P
1816         /* P2P Public Action */
1817         if (nl80211_register_action_frame(bss,
1818                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1819                                           6) < 0)
1820                 ret = -1;
1821         /* P2P Action */
1822         if (nl80211_register_action_frame(bss,
1823                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1824                                           5) < 0)
1825                 ret = -1;
1826 #endif /* CONFIG_P2P */
1827 #ifdef CONFIG_IEEE80211W
1828         /* SA Query Response */
1829         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1830                 ret = -1;
1831 #endif /* CONFIG_IEEE80211W */
1832 #ifdef CONFIG_TDLS
1833         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1834                 /* TDLS Discovery Response */
1835                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1836                     0)
1837                         ret = -1;
1838         }
1839 #endif /* CONFIG_TDLS */
1840
1841         /* FT Action frames */
1842         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1843                 ret = -1;
1844         else
1845                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1846                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1847
1848         /* WNM - BSS Transition Management Request */
1849         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1850                 ret = -1;
1851         /* WNM-Sleep Mode Response */
1852         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1853                 ret = -1;
1854
1855 #ifdef CONFIG_HS20
1856         /* WNM-Notification */
1857         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1858                 ret = -1;
1859 #endif /* CONFIG_HS20 */
1860
1861         /* WMM-AC ADDTS Response */
1862         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1863                 ret = -1;
1864
1865         /* WMM-AC DELTS */
1866         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1867                 ret = -1;
1868
1869         /* Radio Measurement - Neighbor Report Response */
1870         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1871                 ret = -1;
1872
1873         /* Radio Measurement - Link Measurement Request */
1874         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1875             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1876                 ret = -1;
1877
1878         nl80211_mgmt_handle_register_eloop(bss);
1879
1880         return ret;
1881 }
1882
1883
1884 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1885 {
1886         int ret = 0;
1887
1888         if (nl80211_alloc_mgmt_handle(bss))
1889                 return -1;
1890
1891         wpa_printf(MSG_DEBUG,
1892                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1893                    bss->nl_mgmt);
1894
1895         /* Auth frames for mesh SAE */
1896         if (nl80211_register_frame(bss, bss->nl_mgmt,
1897                                    (WLAN_FC_TYPE_MGMT << 2) |
1898                                    (WLAN_FC_STYPE_AUTH << 4),
1899                                    NULL, 0) < 0)
1900                 ret = -1;
1901
1902         /* Mesh peering open */
1903         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1904                 ret = -1;
1905         /* Mesh peering confirm */
1906         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1907                 ret = -1;
1908         /* Mesh peering close */
1909         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1910                 ret = -1;
1911
1912         nl80211_mgmt_handle_register_eloop(bss);
1913
1914         return ret;
1915 }
1916
1917
1918 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1919 {
1920         struct nl_msg *msg;
1921         int ret;
1922
1923         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1924         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1925         if (ret) {
1926                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1927                            "failed: ret=%d (%s)",
1928                            ret, strerror(-ret));
1929         }
1930         return ret;
1931 }
1932
1933
1934 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1935 {
1936         static const int stypes[] = {
1937                 WLAN_FC_STYPE_AUTH,
1938                 WLAN_FC_STYPE_ASSOC_REQ,
1939                 WLAN_FC_STYPE_REASSOC_REQ,
1940                 WLAN_FC_STYPE_DISASSOC,
1941                 WLAN_FC_STYPE_DEAUTH,
1942                 WLAN_FC_STYPE_ACTION,
1943                 WLAN_FC_STYPE_PROBE_REQ,
1944 /* Beacon doesn't work as mac80211 doesn't currently allow
1945  * it, but it wouldn't really be the right thing anyway as
1946  * it isn't per interface ... maybe just dump the scan
1947  * results periodically for OLBC?
1948  */
1949                 /* WLAN_FC_STYPE_BEACON, */
1950         };
1951         unsigned int i;
1952
1953         if (nl80211_alloc_mgmt_handle(bss))
1954                 return -1;
1955         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1956                    "handle %p", bss->nl_mgmt);
1957
1958         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
1959                 if (nl80211_register_frame(bss, bss->nl_mgmt,
1960                                            (WLAN_FC_TYPE_MGMT << 2) |
1961                                            (stypes[i] << 4),
1962                                            NULL, 0) < 0) {
1963                         goto out_err;
1964                 }
1965         }
1966
1967         if (nl80211_register_spurious_class3(bss))
1968                 goto out_err;
1969
1970         if (nl80211_get_wiphy_data_ap(bss) == NULL)
1971                 goto out_err;
1972
1973         nl80211_mgmt_handle_register_eloop(bss);
1974         return 0;
1975
1976 out_err:
1977         nl_destroy_handles(&bss->nl_mgmt);
1978         return -1;
1979 }
1980
1981
1982 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
1983 {
1984         if (nl80211_alloc_mgmt_handle(bss))
1985                 return -1;
1986         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1987                    "handle %p (device SME)", bss->nl_mgmt);
1988
1989         if (nl80211_register_frame(bss, bss->nl_mgmt,
1990                                    (WLAN_FC_TYPE_MGMT << 2) |
1991                                    (WLAN_FC_STYPE_ACTION << 4),
1992                                    NULL, 0) < 0)
1993                 goto out_err;
1994
1995         nl80211_mgmt_handle_register_eloop(bss);
1996         return 0;
1997
1998 out_err:
1999         nl_destroy_handles(&bss->nl_mgmt);
2000         return -1;
2001 }
2002
2003
2004 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2005 {
2006         if (bss->nl_mgmt == NULL)
2007                 return;
2008         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2009                    "(%s)", bss->nl_mgmt, reason);
2010         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2011
2012         nl80211_put_wiphy_data_ap(bss);
2013 }
2014
2015
2016 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2017 {
2018         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2019 }
2020
2021
2022 static void nl80211_del_p2pdev(struct i802_bss *bss)
2023 {
2024         struct nl_msg *msg;
2025         int ret;
2026
2027         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2028         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2029
2030         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2031                    bss->ifname, (long long unsigned int) bss->wdev_id,
2032                    strerror(-ret));
2033 }
2034
2035
2036 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2037 {
2038         struct nl_msg *msg;
2039         int ret;
2040
2041         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2042                               NL80211_CMD_STOP_P2P_DEVICE);
2043         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2044
2045         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2046                    start ? "Start" : "Stop",
2047                    bss->ifname, (long long unsigned int) bss->wdev_id,
2048                    strerror(-ret));
2049         return ret;
2050 }
2051
2052
2053 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2054 {
2055         enum nl80211_iftype nlmode;
2056
2057         nlmode = nl80211_get_ifmode(bss);
2058         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2059                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2060                                              bss->ifname, up);
2061         }
2062
2063         /* P2P Device has start/stop which is equivalent */
2064         return nl80211_set_p2pdev(bss, up);
2065 }
2066
2067
2068 #ifdef CONFIG_TESTING_OPTIONS
2069 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2070 {
2071         /* struct wpa_driver_nl80211_data *drv = arg; */
2072         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2073         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2074
2075
2076         wpa_printf(MSG_DEBUG,
2077                    "nl80211: QCA vendor test command response received");
2078
2079         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2080                   genlmsg_attrlen(gnlh, 0), NULL);
2081         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2082                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2083                 return NL_SKIP;
2084         }
2085
2086         wpa_hexdump(MSG_DEBUG,
2087                     "nl80211: Received QCA vendor test command response",
2088                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2089                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2090
2091         return NL_SKIP;
2092 }
2093 #endif /* CONFIG_TESTING_OPTIONS */
2094
2095
2096 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2097 {
2098 #ifdef CONFIG_TESTING_OPTIONS
2099         struct nl_msg *msg;
2100         struct nlattr *params;
2101         int ret;
2102
2103         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2104             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2105             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2106                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2107             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2108             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2109                 nlmsg_free(msg);
2110                 return;
2111         }
2112         nla_nest_end(msg, params);
2113
2114         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2115         wpa_printf(MSG_DEBUG,
2116                    "nl80211: QCA vendor test command returned %d (%s)",
2117                    ret, strerror(-ret));
2118 #endif /* CONFIG_TESTING_OPTIONS */
2119 }
2120
2121
2122 static int
2123 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2124                                    const u8 *set_addr, int first,
2125                                    const char *driver_params)
2126 {
2127         struct i802_bss *bss = drv->first_bss;
2128         int send_rfkill_event = 0;
2129         enum nl80211_iftype nlmode;
2130
2131         drv->ifindex = if_nametoindex(bss->ifname);
2132         bss->ifindex = drv->ifindex;
2133         bss->wdev_id = drv->global->if_add_wdevid;
2134         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2135
2136         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2137         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2138         drv->global->if_add_wdevid_set = 0;
2139
2140         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2141                 bss->static_ap = 1;
2142
2143         if (wpa_driver_nl80211_capa(drv))
2144                 return -1;
2145
2146         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2147                 return -1;
2148
2149         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2150                    bss->ifname, drv->phyname);
2151
2152         if (set_addr &&
2153             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2154              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2155                                 set_addr)))
2156                 return -1;
2157
2158         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2159                 drv->start_mode_ap = 1;
2160
2161         if (drv->hostapd || bss->static_ap)
2162                 nlmode = NL80211_IFTYPE_AP;
2163         else if (bss->if_dynamic)
2164                 nlmode = nl80211_get_ifmode(bss);
2165         else
2166                 nlmode = NL80211_IFTYPE_STATION;
2167
2168         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2169                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2170                 return -1;
2171         }
2172
2173         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2174                 nl80211_get_macaddr(bss);
2175
2176         if (!rfkill_is_blocked(drv->rfkill)) {
2177                 int ret = i802_set_iface_flags(bss, 1);
2178                 if (ret) {
2179                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2180                                    "interface '%s' UP", bss->ifname);
2181                         return ret;
2182                 }
2183                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2184                         return ret;
2185         } else {
2186                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2187                            "interface '%s' due to rfkill", bss->ifname);
2188                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2189                         return 0;
2190                 drv->if_disabled = 1;
2191                 send_rfkill_event = 1;
2192         }
2193
2194         if (!drv->hostapd)
2195                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2196                                        1, IF_OPER_DORMANT);
2197
2198         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2199                                bss->addr))
2200                 return -1;
2201         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2202
2203         if (send_rfkill_event) {
2204                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2205                                        drv, drv->ctx);
2206         }
2207
2208         if (drv->vendor_cmd_test_avail)
2209                 qca_vendor_test(drv);
2210
2211         return 0;
2212 }
2213
2214
2215 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2216 {
2217         struct nl_msg *msg;
2218
2219         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2220                    drv->ifindex);
2221         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2222         return send_and_recv_msgs(drv, msg, NULL, NULL);
2223 }
2224
2225
2226 /**
2227  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2228  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2229  *
2230  * Shut down driver interface and processing of driver events. Free
2231  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2232  */
2233 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2234 {
2235         struct wpa_driver_nl80211_data *drv = bss->drv;
2236
2237         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2238                    bss->ifname, drv->disabled_11b_rates);
2239
2240         bss->in_deinit = 1;
2241         if (drv->data_tx_status)
2242                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2243         if (drv->eapol_tx_sock >= 0)
2244                 close(drv->eapol_tx_sock);
2245
2246         if (bss->nl_preq)
2247                 wpa_driver_nl80211_probe_req_report(bss, 0);
2248         if (bss->added_if_into_bridge) {
2249                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2250                                     bss->ifname) < 0)
2251                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2252                                    "interface %s from bridge %s: %s",
2253                                    bss->ifname, bss->brname, strerror(errno));
2254                 if (drv->rtnl_sk)
2255                         nl80211_handle_destroy(drv->rtnl_sk);
2256         }
2257         if (bss->added_bridge) {
2258                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2259                                           0) < 0)
2260                         wpa_printf(MSG_INFO,
2261                                    "nl80211: Could not set bridge %s down",
2262                                    bss->brname);
2263                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2264                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2265                                    "bridge %s: %s",
2266                                    bss->brname, strerror(errno));
2267         }
2268
2269         nl80211_remove_monitor_interface(drv);
2270
2271         if (is_ap_interface(drv->nlmode))
2272                 wpa_driver_nl80211_del_beacon(drv);
2273
2274         if (drv->eapol_sock >= 0) {
2275                 eloop_unregister_read_sock(drv->eapol_sock);
2276                 close(drv->eapol_sock);
2277         }
2278
2279         if (drv->if_indices != drv->default_if_indices)
2280                 os_free(drv->if_indices);
2281
2282         if (drv->disabled_11b_rates)
2283                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2284
2285         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2286                                IF_OPER_UP);
2287         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2288         rfkill_deinit(drv->rfkill);
2289
2290         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2291
2292         if (!drv->start_iface_up)
2293                 (void) i802_set_iface_flags(bss, 0);
2294
2295         if (drv->addr_changed) {
2296                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2297                                           0) < 0) {
2298                         wpa_printf(MSG_DEBUG,
2299                                    "nl80211: Could not set interface down to restore permanent MAC address");
2300                 }
2301                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2302                                        drv->perm_addr) < 0) {
2303                         wpa_printf(MSG_DEBUG,
2304                                    "nl80211: Could not restore permanent MAC address");
2305                 }
2306         }
2307
2308         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2309                 if (!drv->hostapd || !drv->start_mode_ap)
2310                         wpa_driver_nl80211_set_mode(bss,
2311                                                     NL80211_IFTYPE_STATION);
2312                 nl80211_mgmt_unsubscribe(bss, "deinit");
2313         } else {
2314                 nl80211_mgmt_unsubscribe(bss, "deinit");
2315                 nl80211_del_p2pdev(bss);
2316         }
2317
2318         nl80211_destroy_bss(drv->first_bss);
2319
2320         os_free(drv->filter_ssids);
2321
2322         os_free(drv->auth_ie);
2323
2324         if (drv->in_interface_list)
2325                 dl_list_del(&drv->list);
2326
2327         os_free(drv->extended_capa);
2328         os_free(drv->extended_capa_mask);
2329         os_free(drv->first_bss);
2330         os_free(drv);
2331 }
2332
2333
2334 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2335 {
2336         switch (alg) {
2337         case WPA_ALG_WEP:
2338                 if (key_len == 5)
2339                         return WLAN_CIPHER_SUITE_WEP40;
2340                 return WLAN_CIPHER_SUITE_WEP104;
2341         case WPA_ALG_TKIP:
2342                 return WLAN_CIPHER_SUITE_TKIP;
2343         case WPA_ALG_CCMP:
2344                 return WLAN_CIPHER_SUITE_CCMP;
2345         case WPA_ALG_GCMP:
2346                 return WLAN_CIPHER_SUITE_GCMP;
2347         case WPA_ALG_CCMP_256:
2348                 return WLAN_CIPHER_SUITE_CCMP_256;
2349         case WPA_ALG_GCMP_256:
2350                 return WLAN_CIPHER_SUITE_GCMP_256;
2351         case WPA_ALG_IGTK:
2352                 return WLAN_CIPHER_SUITE_AES_CMAC;
2353         case WPA_ALG_BIP_GMAC_128:
2354                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2355         case WPA_ALG_BIP_GMAC_256:
2356                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2357         case WPA_ALG_BIP_CMAC_256:
2358                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2359         case WPA_ALG_SMS4:
2360                 return WLAN_CIPHER_SUITE_SMS4;
2361         case WPA_ALG_KRK:
2362                 return WLAN_CIPHER_SUITE_KRK;
2363         case WPA_ALG_NONE:
2364         case WPA_ALG_PMK:
2365                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2366                            alg);
2367                 return 0;
2368         }
2369
2370         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2371                    alg);
2372         return 0;
2373 }
2374
2375
2376 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2377 {
2378         switch (cipher) {
2379         case WPA_CIPHER_CCMP_256:
2380                 return WLAN_CIPHER_SUITE_CCMP_256;
2381         case WPA_CIPHER_GCMP_256:
2382                 return WLAN_CIPHER_SUITE_GCMP_256;
2383         case WPA_CIPHER_CCMP:
2384                 return WLAN_CIPHER_SUITE_CCMP;
2385         case WPA_CIPHER_GCMP:
2386                 return WLAN_CIPHER_SUITE_GCMP;
2387         case WPA_CIPHER_TKIP:
2388                 return WLAN_CIPHER_SUITE_TKIP;
2389         case WPA_CIPHER_WEP104:
2390                 return WLAN_CIPHER_SUITE_WEP104;
2391         case WPA_CIPHER_WEP40:
2392                 return WLAN_CIPHER_SUITE_WEP40;
2393         case WPA_CIPHER_GTK_NOT_USED:
2394                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2395         }
2396
2397         return 0;
2398 }
2399
2400
2401 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2402                                        int max_suites)
2403 {
2404         int num_suites = 0;
2405
2406         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2407                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2408         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2409                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2410         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2411                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2412         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2413                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2414         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2415                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2416         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2417                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2418         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2419                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2420
2421         return num_suites;
2422 }
2423
2424
2425 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2426                                   const u8 *key, size_t key_len)
2427 {
2428         struct nl_msg *msg;
2429         int ret;
2430
2431         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2432                 return 0;
2433
2434         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2435             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2436             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2437                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2438             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2439                 nl80211_nlmsg_clear(msg);
2440                 nlmsg_free(msg);
2441                 return -1;
2442         }
2443         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2444         if (ret) {
2445                 wpa_printf(MSG_DEBUG,
2446                            "nl80211: Key management set key failed: ret=%d (%s)",
2447                            ret, strerror(-ret));
2448         }
2449
2450         return ret;
2451 }
2452
2453
2454 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2455                                       enum wpa_alg alg, const u8 *addr,
2456                                       int key_idx, int set_tx,
2457                                       const u8 *seq, size_t seq_len,
2458                                       const u8 *key, size_t key_len)
2459 {
2460         struct wpa_driver_nl80211_data *drv = bss->drv;
2461         int ifindex;
2462         struct nl_msg *msg;
2463         int ret;
2464         int tdls = 0;
2465
2466         /* Ignore for P2P Device */
2467         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2468                 return 0;
2469
2470         ifindex = if_nametoindex(ifname);
2471         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2472                    "set_tx=%d seq_len=%lu key_len=%lu",
2473                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2474                    (unsigned long) seq_len, (unsigned long) key_len);
2475 #ifdef CONFIG_TDLS
2476         if (key_idx == -1) {
2477                 key_idx = 0;
2478                 tdls = 1;
2479         }
2480 #endif /* CONFIG_TDLS */
2481
2482         if (alg == WPA_ALG_PMK &&
2483             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2484                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2485                            __func__);
2486                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2487                 return ret;
2488         }
2489
2490         if (alg == WPA_ALG_NONE) {
2491                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2492                 if (!msg)
2493                         return -ENOBUFS;
2494         } else {
2495                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2496                 if (!msg ||
2497                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2498                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
2499                                 wpa_alg_to_cipher_suite(alg, key_len)))
2500                         goto fail;
2501                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2502         }
2503
2504         if (seq && seq_len) {
2505                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2506                         goto fail;
2507                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2508         }
2509
2510         if (addr && !is_broadcast_ether_addr(addr)) {
2511                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2512                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2513                         goto fail;
2514
2515                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2516                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2517                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2518                                         NL80211_KEYTYPE_GROUP))
2519                                 goto fail;
2520                 }
2521         } else if (addr && is_broadcast_ether_addr(addr)) {
2522                 struct nlattr *types;
2523
2524                 wpa_printf(MSG_DEBUG, "   broadcast key");
2525
2526                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2527                 if (!types ||
2528                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2529                         goto fail;
2530                 nla_nest_end(msg, types);
2531         }
2532         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2533                 goto fail;
2534
2535         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2536         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2537                 ret = 0;
2538         if (ret)
2539                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2540                            ret, strerror(-ret));
2541
2542         /*
2543          * If we failed or don't need to set the default TX key (below),
2544          * we're done here.
2545          */
2546         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2547                 return ret;
2548         if (is_ap_interface(drv->nlmode) && addr &&
2549             !is_broadcast_ether_addr(addr))
2550                 return ret;
2551
2552         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2553         if (!msg ||
2554             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2555             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2556                                alg == WPA_ALG_BIP_GMAC_128 ||
2557                                alg == WPA_ALG_BIP_GMAC_256 ||
2558                                alg == WPA_ALG_BIP_CMAC_256) ?
2559                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2560                          NL80211_ATTR_KEY_DEFAULT))
2561                 goto fail;
2562         if (addr && is_broadcast_ether_addr(addr)) {
2563                 struct nlattr *types;
2564
2565                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2566                 if (!types ||
2567                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2568                         goto fail;
2569                 nla_nest_end(msg, types);
2570         } else if (addr) {
2571                 struct nlattr *types;
2572
2573                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2574                 if (!types ||
2575                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2576                         goto fail;
2577                 nla_nest_end(msg, types);
2578         }
2579
2580         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2581         if (ret == -ENOENT)
2582                 ret = 0;
2583         if (ret)
2584                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2585                            "err=%d %s)", ret, strerror(-ret));
2586         return ret;
2587
2588 fail:
2589         nl80211_nlmsg_clear(msg);
2590         nlmsg_free(msg);
2591         return -ENOBUFS;
2592 }
2593
2594
2595 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2596                       int key_idx, int defkey,
2597                       const u8 *seq, size_t seq_len,
2598                       const u8 *key, size_t key_len)
2599 {
2600         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2601         if (!key_attr)
2602                 return -1;
2603
2604         if (defkey && alg == WPA_ALG_IGTK) {
2605                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2606                         return -1;
2607         } else if (defkey) {
2608                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2609                         return -1;
2610         }
2611
2612         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2613             nla_put_u32(msg, NL80211_KEY_CIPHER,
2614                         wpa_alg_to_cipher_suite(alg, key_len)) ||
2615             (seq && seq_len &&
2616              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2617             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2618                 return -1;
2619
2620         nla_nest_end(msg, key_attr);
2621
2622         return 0;
2623 }
2624
2625
2626 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2627                                  struct nl_msg *msg)
2628 {
2629         int i, privacy = 0;
2630         struct nlattr *nl_keys, *nl_key;
2631
2632         for (i = 0; i < 4; i++) {
2633                 if (!params->wep_key[i])
2634                         continue;
2635                 privacy = 1;
2636                 break;
2637         }
2638         if (params->wps == WPS_MODE_PRIVACY)
2639                 privacy = 1;
2640         if (params->pairwise_suite &&
2641             params->pairwise_suite != WPA_CIPHER_NONE)
2642                 privacy = 1;
2643
2644         if (!privacy)
2645                 return 0;
2646
2647         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2648                 return -ENOBUFS;
2649
2650         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2651         if (!nl_keys)
2652                 return -ENOBUFS;
2653
2654         for (i = 0; i < 4; i++) {
2655                 if (!params->wep_key[i])
2656                         continue;
2657
2658                 nl_key = nla_nest_start(msg, i);
2659                 if (!nl_key ||
2660                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2661                             params->wep_key[i]) ||
2662                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2663                                 params->wep_key_len[i] == 5 ?
2664                                 WLAN_CIPHER_SUITE_WEP40 :
2665                                 WLAN_CIPHER_SUITE_WEP104) ||
2666                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2667                     (i == params->wep_tx_keyidx &&
2668                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2669                         return -ENOBUFS;
2670
2671                 nla_nest_end(msg, nl_key);
2672         }
2673         nla_nest_end(msg, nl_keys);
2674
2675         return 0;
2676 }
2677
2678
2679 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2680                             const u8 *addr, int cmd, u16 reason_code,
2681                             int local_state_change)
2682 {
2683         int ret;
2684         struct nl_msg *msg;
2685
2686         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2687             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2688             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2689             (local_state_change &&
2690              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2691                 nlmsg_free(msg);
2692                 return -1;
2693         }
2694
2695         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2696         if (ret) {
2697                 wpa_dbg(drv->ctx, MSG_DEBUG,
2698                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2699                         reason_code, ret, strerror(-ret));
2700         }
2701         return ret;
2702 }
2703
2704
2705 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2706                                          int reason_code)
2707 {
2708         int ret;
2709
2710         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2711         nl80211_mark_disconnected(drv);
2712         /* Disconnect command doesn't need BSSID - it uses cached value */
2713         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2714                                       reason_code, 0);
2715         /*
2716          * For locally generated disconnect, supplicant already generates a
2717          * DEAUTH event, so ignore the event from NL80211.
2718          */
2719         drv->ignore_next_local_disconnect = ret == 0;
2720
2721         return ret;
2722 }
2723
2724
2725 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2726                                              const u8 *addr, int reason_code)
2727 {
2728         struct wpa_driver_nl80211_data *drv = bss->drv;
2729         int ret;
2730
2731         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2732                 nl80211_mark_disconnected(drv);
2733                 return nl80211_leave_ibss(drv, 1);
2734         }
2735         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2736                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2737         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2738                    __func__, MAC2STR(addr), reason_code);
2739         nl80211_mark_disconnected(drv);
2740         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2741                                       reason_code, 0);
2742         /*
2743          * For locally generated deauthenticate, supplicant already generates a
2744          * DEAUTH event, so ignore the event from NL80211.
2745          */
2746         drv->ignore_next_local_deauth = ret == 0;
2747         return ret;
2748 }
2749
2750
2751 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2752                                      struct wpa_driver_auth_params *params)
2753 {
2754         int i;
2755
2756         drv->auth_freq = params->freq;
2757         drv->auth_alg = params->auth_alg;
2758         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2759         drv->auth_local_state_change = params->local_state_change;
2760         drv->auth_p2p = params->p2p;
2761
2762         if (params->bssid)
2763                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2764         else
2765                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2766
2767         if (params->ssid) {
2768                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2769                 drv->auth_ssid_len = params->ssid_len;
2770         } else
2771                 drv->auth_ssid_len = 0;
2772
2773
2774         os_free(drv->auth_ie);
2775         drv->auth_ie = NULL;
2776         drv->auth_ie_len = 0;
2777         if (params->ie) {
2778                 drv->auth_ie = os_malloc(params->ie_len);
2779                 if (drv->auth_ie) {
2780                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2781                         drv->auth_ie_len = params->ie_len;
2782                 }
2783         }
2784
2785         for (i = 0; i < 4; i++) {
2786                 if (params->wep_key[i] && params->wep_key_len[i] &&
2787                     params->wep_key_len[i] <= 16) {
2788                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2789                                   params->wep_key_len[i]);
2790                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2791                 } else
2792                         drv->auth_wep_key_len[i] = 0;
2793         }
2794 }
2795
2796
2797 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2798 {
2799         struct wpa_driver_nl80211_data *drv = bss->drv;
2800
2801         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2802                 return;
2803
2804         /*
2805          * Looks like we failed to unmask 11b rates previously. This could
2806          * happen, e.g., if the interface was down at the point in time when a
2807          * P2P group was terminated.
2808          */
2809         wpa_printf(MSG_DEBUG,
2810                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2811                    bss->ifname);
2812         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2813 }
2814
2815
2816 static int wpa_driver_nl80211_authenticate(
2817         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2818 {
2819         struct wpa_driver_nl80211_data *drv = bss->drv;
2820         int ret = -1, i;
2821         struct nl_msg *msg;
2822         enum nl80211_auth_type type;
2823         enum nl80211_iftype nlmode;
2824         int count = 0;
2825         int is_retry;
2826
2827         nl80211_unmask_11b_rates(bss);
2828
2829         is_retry = drv->retry_auth;
2830         drv->retry_auth = 0;
2831         drv->ignore_deauth_event = 0;
2832
2833         nl80211_mark_disconnected(drv);
2834         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2835         if (params->bssid)
2836                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2837         else
2838                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2839         /* FIX: IBSS mode */
2840         nlmode = params->p2p ?
2841                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2842         if (drv->nlmode != nlmode &&
2843             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2844                 return -1;
2845
2846 retry:
2847         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2848                    drv->ifindex);
2849
2850         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2851         if (!msg)
2852                 goto fail;
2853
2854         for (i = 0; i < 4; i++) {
2855                 if (!params->wep_key[i])
2856                         continue;
2857                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2858                                            NULL, i,
2859                                            i == params->wep_tx_keyidx, NULL, 0,
2860                                            params->wep_key[i],
2861                                            params->wep_key_len[i]);
2862                 if (params->wep_tx_keyidx != i)
2863                         continue;
2864                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2865                                params->wep_key[i], params->wep_key_len[i]))
2866                         goto fail;
2867         }
2868
2869         if (params->bssid) {
2870                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2871                            MAC2STR(params->bssid));
2872                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2873                         goto fail;
2874         }
2875         if (params->freq) {
2876                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2877                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2878                         goto fail;
2879         }
2880         if (params->ssid) {
2881                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2882                                   params->ssid, params->ssid_len);
2883                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2884                             params->ssid))
2885                         goto fail;
2886         }
2887         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2888         if (params->ie &&
2889             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2890                 goto fail;
2891         if (params->sae_data) {
2892                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2893                             params->sae_data_len);
2894                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2895                             params->sae_data))
2896                         goto fail;
2897         }
2898         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2899                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2900         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2901                 type = NL80211_AUTHTYPE_SHARED_KEY;
2902         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2903                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2904         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2905                 type = NL80211_AUTHTYPE_FT;
2906         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2907                 type = NL80211_AUTHTYPE_SAE;
2908         else
2909                 goto fail;
2910         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2911         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2912                 goto fail;
2913         if (params->local_state_change) {
2914                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2915                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2916                         goto fail;
2917         }
2918
2919         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2920         msg = NULL;
2921         if (ret) {
2922                 wpa_dbg(drv->ctx, MSG_DEBUG,
2923                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2924                         ret, strerror(-ret));
2925                 count++;
2926                 if (ret == -EALREADY && count == 1 && params->bssid &&
2927                     !params->local_state_change) {
2928                         /*
2929                          * mac80211 does not currently accept new
2930                          * authentication if we are already authenticated. As a
2931                          * workaround, force deauthentication and try again.
2932                          */
2933                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2934                                    "after forced deauthentication");
2935                         drv->ignore_deauth_event = 1;
2936                         wpa_driver_nl80211_deauthenticate(
2937                                 bss, params->bssid,
2938                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2939                         nlmsg_free(msg);
2940                         goto retry;
2941                 }
2942
2943                 if (ret == -ENOENT && params->freq && !is_retry) {
2944                         /*
2945                          * cfg80211 has likely expired the BSS entry even
2946                          * though it was previously available in our internal
2947                          * BSS table. To recover quickly, start a single
2948                          * channel scan on the specified channel.
2949                          */
2950                         struct wpa_driver_scan_params scan;
2951                         int freqs[2];
2952
2953                         os_memset(&scan, 0, sizeof(scan));
2954                         scan.num_ssids = 1;
2955                         if (params->ssid) {
2956                                 scan.ssids[0].ssid = params->ssid;
2957                                 scan.ssids[0].ssid_len = params->ssid_len;
2958                         }
2959                         freqs[0] = params->freq;
2960                         freqs[1] = 0;
2961                         scan.freqs = freqs;
2962                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
2963                                    "channel scan to refresh cfg80211 BSS "
2964                                    "entry");
2965                         ret = wpa_driver_nl80211_scan(bss, &scan);
2966                         if (ret == 0) {
2967                                 nl80211_copy_auth_params(drv, params);
2968                                 drv->scan_for_auth = 1;
2969                         }
2970                 } else if (is_retry) {
2971                         /*
2972                          * Need to indicate this with an event since the return
2973                          * value from the retry is not delivered to core code.
2974                          */
2975                         union wpa_event_data event;
2976                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
2977                                    "failed");
2978                         os_memset(&event, 0, sizeof(event));
2979                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
2980                                   ETH_ALEN);
2981                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
2982                                              &event);
2983                 }
2984         } else {
2985                 wpa_printf(MSG_DEBUG,
2986                            "nl80211: Authentication request send successfully");
2987         }
2988
2989 fail:
2990         nlmsg_free(msg);
2991         return ret;
2992 }
2993
2994
2995 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
2996 {
2997         struct wpa_driver_auth_params params;
2998         struct i802_bss *bss = drv->first_bss;
2999         int i;
3000
3001         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3002
3003         os_memset(&params, 0, sizeof(params));
3004         params.freq = drv->auth_freq;
3005         params.auth_alg = drv->auth_alg;
3006         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3007         params.local_state_change = drv->auth_local_state_change;
3008         params.p2p = drv->auth_p2p;
3009
3010         if (!is_zero_ether_addr(drv->auth_bssid_))
3011                 params.bssid = drv->auth_bssid_;
3012
3013         if (drv->auth_ssid_len) {
3014                 params.ssid = drv->auth_ssid;
3015                 params.ssid_len = drv->auth_ssid_len;
3016         }
3017
3018         params.ie = drv->auth_ie;
3019         params.ie_len = drv->auth_ie_len;
3020
3021         for (i = 0; i < 4; i++) {
3022                 if (drv->auth_wep_key_len[i]) {
3023                         params.wep_key[i] = drv->auth_wep_key[i];
3024                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3025                 }
3026         }
3027
3028         drv->retry_auth = 1;
3029         return wpa_driver_nl80211_authenticate(bss, &params);
3030 }
3031
3032
3033 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3034                                          const void *data, size_t len,
3035                                          int encrypt, int noack,
3036                                          unsigned int freq, int no_cck,
3037                                          int offchanok, unsigned int wait_time)
3038 {
3039         struct wpa_driver_nl80211_data *drv = bss->drv;
3040         u64 cookie;
3041         int res;
3042
3043         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3044                 freq = nl80211_get_assoc_freq(drv);
3045                 wpa_printf(MSG_DEBUG,
3046                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3047                            freq);
3048         }
3049         if (freq == 0) {
3050                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3051                            bss->freq);
3052                 freq = bss->freq;
3053         }
3054
3055         if (drv->use_monitor) {
3056                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3057                            freq, bss->freq);
3058                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3059         }
3060
3061         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3062         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3063                                      &cookie, no_cck, noack, offchanok);
3064         if (res == 0 && !noack) {
3065                 const struct ieee80211_mgmt *mgmt;
3066                 u16 fc;
3067
3068                 mgmt = (const struct ieee80211_mgmt *) data;
3069                 fc = le_to_host16(mgmt->frame_control);
3070                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3071                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3072                         wpa_printf(MSG_MSGDUMP,
3073                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3074                                    (long long unsigned int)
3075                                    drv->send_action_cookie,
3076                                    (long long unsigned int) cookie);
3077                         drv->send_action_cookie = cookie;
3078                 }
3079         }
3080
3081         return res;
3082 }
3083
3084
3085 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3086                                         size_t data_len, int noack,
3087                                         unsigned int freq, int no_cck,
3088                                         int offchanok,
3089                                         unsigned int wait_time)
3090 {
3091         struct wpa_driver_nl80211_data *drv = bss->drv;
3092         struct ieee80211_mgmt *mgmt;
3093         int encrypt = 1;
3094         u16 fc;
3095
3096         mgmt = (struct ieee80211_mgmt *) data;
3097         fc = le_to_host16(mgmt->frame_control);
3098         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3099                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3100                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3101                    fc, fc2str(fc), drv->nlmode);
3102
3103         if ((is_sta_interface(drv->nlmode) ||
3104              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3105             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3106             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3107                 /*
3108                  * The use of last_mgmt_freq is a bit of a hack,
3109                  * but it works due to the single-threaded nature
3110                  * of wpa_supplicant.
3111                  */
3112                 if (freq == 0) {
3113                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3114                                    drv->last_mgmt_freq);
3115                         freq = drv->last_mgmt_freq;
3116                 }
3117                 return nl80211_send_frame_cmd(bss, freq, 0,
3118                                               data, data_len, NULL, 1, noack,
3119                                               1);
3120         }
3121
3122         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3123                 if (freq == 0) {
3124                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3125                                    bss->freq);
3126                         freq = bss->freq;
3127                 }
3128                 return nl80211_send_frame_cmd(bss, freq,
3129                                               (int) freq == bss->freq ? 0 :
3130                                               wait_time,
3131                                               data, data_len,
3132                                               &drv->send_action_cookie,
3133                                               no_cck, noack, offchanok);
3134         }
3135
3136         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3137             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3138                 /*
3139                  * Only one of the authentication frame types is encrypted.
3140                  * In order for static WEP encryption to work properly (i.e.,
3141                  * to not encrypt the frame), we need to tell mac80211 about
3142                  * the frames that must not be encrypted.
3143                  */
3144                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3145                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3146                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3147                         encrypt = 0;
3148         }
3149
3150         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3151         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3152                                              noack, freq, no_cck, offchanok,
3153                                              wait_time);
3154 }
3155
3156
3157 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3158 {
3159         u8 rates[NL80211_MAX_SUPP_RATES];
3160         u8 rates_len = 0;
3161         int i;
3162
3163         if (!basic_rates)
3164                 return 0;
3165
3166         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3167                 rates[rates_len++] = basic_rates[i] / 5;
3168
3169         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3170 }
3171
3172
3173 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3174                            int slot, int ht_opmode, int ap_isolate,
3175                            const int *basic_rates)
3176 {
3177         struct wpa_driver_nl80211_data *drv = bss->drv;
3178         struct nl_msg *msg;
3179
3180         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3181             (cts >= 0 &&
3182              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3183             (preamble >= 0 &&
3184              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3185             (slot >= 0 &&
3186              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3187             (ht_opmode >= 0 &&
3188              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3189             (ap_isolate >= 0 &&
3190              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3191             nl80211_put_basic_rates(msg, basic_rates)) {
3192                 nlmsg_free(msg);
3193                 return -ENOBUFS;
3194         }
3195
3196         return send_and_recv_msgs(drv, msg, NULL, NULL);
3197 }
3198
3199
3200 static int wpa_driver_nl80211_set_acl(void *priv,
3201                                       struct hostapd_acl_params *params)
3202 {
3203         struct i802_bss *bss = priv;
3204         struct wpa_driver_nl80211_data *drv = bss->drv;
3205         struct nl_msg *msg;
3206         struct nlattr *acl;
3207         unsigned int i;
3208         int ret;
3209
3210         if (!(drv->capa.max_acl_mac_addrs))
3211                 return -ENOTSUP;
3212
3213         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3214                 return -ENOTSUP;
3215
3216         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3217                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3218
3219         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3220             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3221                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3222                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3223             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3224                 nlmsg_free(msg);
3225                 return -ENOMEM;
3226         }
3227
3228         for (i = 0; i < params->num_mac_acl; i++) {
3229                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3230                         nlmsg_free(msg);
3231                         return -ENOMEM;
3232                 }
3233         }
3234
3235         nla_nest_end(msg, acl);
3236
3237         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3238         if (ret) {
3239                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3240                            ret, strerror(-ret));
3241         }
3242
3243         return ret;
3244 }
3245
3246
3247 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3248 {
3249         if (beacon_int > 0) {
3250                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3251                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3252                                    beacon_int);
3253         }
3254
3255         return 0;
3256 }
3257
3258
3259 static int wpa_driver_nl80211_set_ap(void *priv,
3260                                      struct wpa_driver_ap_params *params)
3261 {
3262         struct i802_bss *bss = priv;
3263         struct wpa_driver_nl80211_data *drv = bss->drv;
3264         struct nl_msg *msg;
3265         u8 cmd = NL80211_CMD_NEW_BEACON;
3266         int ret;
3267         int beacon_set;
3268         int num_suites;
3269         int smps_mode;
3270         u32 suites[10], suite;
3271         u32 ver;
3272
3273         beacon_set = bss->beacon_set;
3274
3275         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3276                    beacon_set);
3277         if (beacon_set)
3278                 cmd = NL80211_CMD_SET_BEACON;
3279
3280         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3281                     params->head, params->head_len);
3282         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3283                     params->tail, params->tail_len);
3284         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3285         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3286         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3287         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3288                           params->ssid, params->ssid_len);
3289         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3290             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3291                     params->head) ||
3292             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3293                     params->tail) ||
3294             nl80211_put_beacon_int(msg, params->beacon_int) ||
3295             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3296             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3297                 goto fail;
3298         if (params->proberesp && params->proberesp_len) {
3299                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3300                             params->proberesp, params->proberesp_len);
3301                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3302                             params->proberesp))
3303                         goto fail;
3304         }
3305         switch (params->hide_ssid) {
3306         case NO_SSID_HIDING:
3307                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3308                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3309                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3310                         goto fail;
3311                 break;
3312         case HIDDEN_SSID_ZERO_LEN:
3313                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3314                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3315                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3316                         goto fail;
3317                 break;
3318         case HIDDEN_SSID_ZERO_CONTENTS:
3319                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3320                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3321                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3322                         goto fail;
3323                 break;
3324         }
3325         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3326         if (params->privacy &&
3327             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3328                 goto fail;
3329         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3330         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3331             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3332                 /* Leave out the attribute */
3333         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3334                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3335                                 NL80211_AUTHTYPE_SHARED_KEY))
3336                         goto fail;
3337         } else {
3338                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3339                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3340                         goto fail;
3341         }
3342
3343         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3344         ver = 0;
3345         if (params->wpa_version & WPA_PROTO_WPA)
3346                 ver |= NL80211_WPA_VERSION_1;
3347         if (params->wpa_version & WPA_PROTO_RSN)
3348                 ver |= NL80211_WPA_VERSION_2;
3349         if (ver &&
3350             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3351                 goto fail;
3352
3353         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3354                    params->key_mgmt_suites);
3355         num_suites = 0;
3356         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3357                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3358         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3359                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3360         if (num_suites &&
3361             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3362                     suites))
3363                 goto fail;
3364
3365         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3366             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3367             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3368                 goto fail;
3369
3370         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3371                    params->pairwise_ciphers);
3372         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3373                                                  suites, ARRAY_SIZE(suites));
3374         if (num_suites &&
3375             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3376                     num_suites * sizeof(u32), suites))
3377                 goto fail;
3378
3379         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3380                    params->group_cipher);
3381         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3382         if (suite &&
3383             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3384                 goto fail;
3385
3386         switch (params->smps_mode) {
3387         case HT_CAP_INFO_SMPS_DYNAMIC:
3388                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3389                 smps_mode = NL80211_SMPS_DYNAMIC;
3390                 break;
3391         case HT_CAP_INFO_SMPS_STATIC:
3392                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3393                 smps_mode = NL80211_SMPS_STATIC;
3394                 break;
3395         default:
3396                 /* invalid - fallback to smps off */
3397         case HT_CAP_INFO_SMPS_DISABLED:
3398                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3399                 smps_mode = NL80211_SMPS_OFF;
3400                 break;
3401         }
3402         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3403                 goto fail;
3404
3405         if (params->beacon_ies) {
3406                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3407                                 params->beacon_ies);
3408                 if (nla_put(msg, NL80211_ATTR_IE,
3409                             wpabuf_len(params->beacon_ies),
3410                             wpabuf_head(params->beacon_ies)))
3411                         goto fail;
3412         }
3413         if (params->proberesp_ies) {
3414                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3415                                 params->proberesp_ies);
3416                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3417                             wpabuf_len(params->proberesp_ies),
3418                             wpabuf_head(params->proberesp_ies)))
3419                         goto fail;
3420         }
3421         if (params->assocresp_ies) {
3422                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3423                                 params->assocresp_ies);
3424                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3425                             wpabuf_len(params->assocresp_ies),
3426                             wpabuf_head(params->assocresp_ies)))
3427                         goto fail;
3428         }
3429
3430         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3431                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3432                            params->ap_max_inactivity);
3433                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3434                                 params->ap_max_inactivity))
3435                         goto fail;
3436         }
3437
3438         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3439         if (ret) {
3440                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3441                            ret, strerror(-ret));
3442         } else {
3443                 bss->beacon_set = 1;
3444                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3445                                 params->short_slot_time, params->ht_opmode,
3446                                 params->isolate, params->basic_rates);
3447                 if (beacon_set && params->freq &&
3448                     params->freq->bandwidth != bss->bandwidth) {
3449                         wpa_printf(MSG_DEBUG,
3450                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3451                                    bss->ifname, bss->bandwidth,
3452                                    params->freq->bandwidth);
3453                         ret = nl80211_set_channel(bss, params->freq, 1);
3454                         if (ret) {
3455                                 wpa_printf(MSG_DEBUG,
3456                                            "nl80211: Frequency set failed: %d (%s)",
3457                                            ret, strerror(-ret));
3458                         } else {
3459                                 wpa_printf(MSG_DEBUG,
3460                                            "nl80211: Frequency set succeeded for ht2040 coex");
3461                                 bss->bandwidth = params->freq->bandwidth;
3462                         }
3463                 } else if (!beacon_set) {
3464                         /*
3465                          * cfg80211 updates the driver on frequence change in AP
3466                          * mode only at the point when beaconing is started, so
3467                          * set the initial value here.
3468                          */
3469                         bss->bandwidth = params->freq->bandwidth;
3470                 }
3471         }
3472         return ret;
3473 fail:
3474         nlmsg_free(msg);
3475         return -ENOBUFS;
3476 }
3477
3478
3479 static int nl80211_put_freq_params(struct nl_msg *msg,
3480                                    const struct hostapd_freq_params *freq)
3481 {
3482         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3483         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3484                 return -ENOBUFS;
3485
3486         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3487         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3488
3489         if (freq->vht_enabled) {
3490                 enum nl80211_chan_width cw;
3491
3492                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3493                 switch (freq->bandwidth) {
3494                 case 20:
3495                         cw = NL80211_CHAN_WIDTH_20;
3496                         break;
3497                 case 40:
3498                         cw = NL80211_CHAN_WIDTH_40;
3499                         break;
3500                 case 80:
3501                         if (freq->center_freq2)
3502                                 cw = NL80211_CHAN_WIDTH_80P80;
3503                         else
3504                                 cw = NL80211_CHAN_WIDTH_80;
3505                         break;
3506                 case 160:
3507                         cw = NL80211_CHAN_WIDTH_160;
3508                         break;
3509                 default:
3510                         return -EINVAL;
3511                 }
3512
3513                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3514                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3515                            freq->center_freq1);
3516                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3517                            freq->center_freq2);
3518                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3519                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3520                                 freq->center_freq1) ||
3521                     (freq->center_freq2 &&
3522                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3523                                  freq->center_freq2)))
3524                         return -ENOBUFS;
3525         } else if (freq->ht_enabled) {
3526                 enum nl80211_channel_type ct;
3527
3528                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3529                            freq->sec_channel_offset);
3530                 switch (freq->sec_channel_offset) {
3531                 case -1:
3532                         ct = NL80211_CHAN_HT40MINUS;
3533                         break;
3534                 case 1:
3535                         ct = NL80211_CHAN_HT40PLUS;
3536                         break;
3537                 default:
3538                         ct = NL80211_CHAN_HT20;
3539                         break;
3540                 }
3541
3542                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3543                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3544                         return -ENOBUFS;
3545         }
3546         return 0;
3547 }
3548
3549
3550 static int nl80211_set_channel(struct i802_bss *bss,
3551                                struct hostapd_freq_params *freq, int set_chan)
3552 {
3553         struct wpa_driver_nl80211_data *drv = bss->drv;
3554         struct nl_msg *msg;
3555         int ret;
3556
3557         wpa_printf(MSG_DEBUG,
3558                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3559                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3560                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3561
3562         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3563                               NL80211_CMD_SET_WIPHY);
3564         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3565                 nlmsg_free(msg);
3566                 return -1;
3567         }
3568
3569         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3570         if (ret == 0) {
3571                 bss->freq = freq->freq;
3572                 return 0;
3573         }
3574         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3575                    "%d (%s)", freq->freq, ret, strerror(-ret));
3576         return -1;
3577 }
3578
3579
3580 static u32 sta_flags_nl80211(int flags)
3581 {
3582         u32 f = 0;
3583
3584         if (flags & WPA_STA_AUTHORIZED)
3585                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3586         if (flags & WPA_STA_WMM)
3587                 f |= BIT(NL80211_STA_FLAG_WME);
3588         if (flags & WPA_STA_SHORT_PREAMBLE)
3589                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3590         if (flags & WPA_STA_MFP)
3591                 f |= BIT(NL80211_STA_FLAG_MFP);
3592         if (flags & WPA_STA_TDLS_PEER)
3593                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3594         if (flags & WPA_STA_AUTHENTICATED)
3595                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3596
3597         return f;
3598 }
3599
3600
3601 #ifdef CONFIG_MESH
3602 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3603 {
3604         switch (state) {
3605         case PLINK_LISTEN:
3606                 return NL80211_PLINK_LISTEN;
3607         case PLINK_OPEN_SENT:
3608                 return NL80211_PLINK_OPN_SNT;
3609         case PLINK_OPEN_RCVD:
3610                 return NL80211_PLINK_OPN_RCVD;
3611         case PLINK_CNF_RCVD:
3612                 return NL80211_PLINK_CNF_RCVD;
3613         case PLINK_ESTAB:
3614                 return NL80211_PLINK_ESTAB;
3615         case PLINK_HOLDING:
3616                 return NL80211_PLINK_HOLDING;
3617         case PLINK_BLOCKED:
3618                 return NL80211_PLINK_BLOCKED;
3619         default:
3620                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3621                            state);
3622         }
3623         return -1;
3624 }
3625 #endif /* CONFIG_MESH */
3626
3627
3628 static int wpa_driver_nl80211_sta_add(void *priv,
3629                                       struct hostapd_sta_add_params *params)
3630 {
3631         struct i802_bss *bss = priv;
3632         struct wpa_driver_nl80211_data *drv = bss->drv;
3633         struct nl_msg *msg;
3634         struct nl80211_sta_flag_update upd;
3635         int ret = -ENOBUFS;
3636
3637         if ((params->flags & WPA_STA_TDLS_PEER) &&
3638             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3639                 return -EOPNOTSUPP;
3640
3641         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3642                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3643         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3644                               NL80211_CMD_NEW_STATION);
3645         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3646                 goto fail;
3647
3648         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3649                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3650                             params->supp_rates, params->supp_rates_len);
3651                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3652                            params->capability);
3653                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3654                             params->supp_rates_len, params->supp_rates) ||
3655                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3656                                 params->capability))
3657                         goto fail;
3658
3659                 if (params->ht_capabilities) {
3660                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3661                                     (u8 *) params->ht_capabilities,
3662                                     sizeof(*params->ht_capabilities));
3663                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3664                                     sizeof(*params->ht_capabilities),
3665                                     params->ht_capabilities))
3666                                 goto fail;
3667                 }
3668
3669                 if (params->vht_capabilities) {
3670                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3671                                     (u8 *) params->vht_capabilities,
3672                                     sizeof(*params->vht_capabilities));
3673                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3674                                     sizeof(*params->vht_capabilities),
3675                                     params->vht_capabilities))
3676                                 goto fail;
3677                 }
3678
3679                 if (params->ext_capab) {
3680                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3681                                     params->ext_capab, params->ext_capab_len);
3682                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3683                                     params->ext_capab_len, params->ext_capab))
3684                                 goto fail;
3685                 }
3686         }
3687         if (!params->set) {
3688                 if (params->aid) {
3689                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3690                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3691                                 goto fail;
3692                 } else {
3693                         /*
3694                          * cfg80211 validates that AID is non-zero, so we have
3695                          * to make this a non-zero value for the TDLS case where
3696                          * a dummy STA entry is used for now.
3697                          */
3698                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3699                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3700                                 goto fail;
3701                 }
3702                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3703                            params->listen_interval);
3704                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3705                                 params->listen_interval))
3706                         goto fail;
3707         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3708                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3709                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3710                         goto fail;
3711         }
3712
3713         if (params->vht_opmode_enabled) {
3714                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3715                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3716                                params->vht_opmode))
3717                         goto fail;
3718         }
3719
3720         if (params->supp_channels) {
3721                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3722                             params->supp_channels, params->supp_channels_len);
3723                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3724                             params->supp_channels_len, params->supp_channels))
3725                         goto fail;
3726         }
3727
3728         if (params->supp_oper_classes) {
3729                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3730                             params->supp_oper_classes,
3731                             params->supp_oper_classes_len);
3732                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3733                             params->supp_oper_classes_len,
3734                             params->supp_oper_classes))
3735                         goto fail;
3736         }
3737
3738         os_memset(&upd, 0, sizeof(upd));
3739         upd.set = sta_flags_nl80211(params->flags);
3740         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3741         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3742                    upd.set, upd.mask);
3743         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3744                 goto fail;
3745
3746 #ifdef CONFIG_MESH
3747         if (params->plink_state &&
3748             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3749                        sta_plink_state_nl80211(params->plink_state)))
3750                 goto fail;
3751 #endif /* CONFIG_MESH */
3752
3753         if (params->flags & WPA_STA_WMM) {
3754                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3755
3756                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3757                 if (!wme ||
3758                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3759                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3760                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3761                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3762                                WMM_QOSINFO_STA_SP_MASK))
3763                         goto fail;
3764                 nla_nest_end(msg, wme);
3765         }
3766
3767         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3768         msg = NULL;
3769         if (ret)
3770                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3771                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3772                            strerror(-ret));
3773         if (ret == -EEXIST)
3774                 ret = 0;
3775 fail:
3776         nlmsg_free(msg);
3777         return ret;
3778 }
3779
3780
3781 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3782 {
3783 #ifdef CONFIG_LIBNL3_ROUTE
3784         struct wpa_driver_nl80211_data *drv = bss->drv;
3785         struct rtnl_neigh *rn;
3786         struct nl_addr *nl_addr;
3787         int err;
3788
3789         rn = rtnl_neigh_alloc();
3790         if (!rn)
3791                 return;
3792
3793         rtnl_neigh_set_family(rn, AF_BRIDGE);
3794         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3795         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3796         if (!nl_addr) {
3797                 rtnl_neigh_put(rn);
3798                 return;
3799         }
3800         rtnl_neigh_set_lladdr(rn, nl_addr);
3801
3802         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3803         if (err < 0) {
3804                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3805                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3806                            bss->ifindex, nl_geterror(err));
3807         } else {
3808                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3809                            MACSTR, MAC2STR(addr));
3810         }
3811
3812         nl_addr_put(nl_addr);
3813         rtnl_neigh_put(rn);
3814 #endif /* CONFIG_LIBNL3_ROUTE */
3815 }
3816
3817
3818 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3819                                          int deauth, u16 reason_code)
3820 {
3821         struct wpa_driver_nl80211_data *drv = bss->drv;
3822         struct nl_msg *msg;
3823         int ret;
3824
3825         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3826             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3827             (deauth == 0 &&
3828              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3829                         WLAN_FC_STYPE_DISASSOC)) ||
3830             (deauth == 1 &&
3831              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3832                         WLAN_FC_STYPE_DEAUTH)) ||
3833             (reason_code &&
3834              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3835                 nlmsg_free(msg);
3836                 return -ENOBUFS;
3837         }
3838
3839         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3840         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3841                    " --> %d (%s)",
3842                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3843
3844         if (drv->rtnl_sk)
3845                 rtnl_neigh_delete_fdb_entry(bss, addr);
3846
3847         if (ret == -ENOENT)
3848                 return 0;
3849         return ret;
3850 }
3851
3852
3853 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3854 {
3855         struct nl_msg *msg;
3856         struct wpa_driver_nl80211_data *drv2;
3857
3858         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3859
3860         /* stop listening for EAPOL on this interface */
3861         dl_list_for_each(drv2, &drv->global->interfaces,
3862                          struct wpa_driver_nl80211_data, list)
3863                 del_ifidx(drv2, ifidx);
3864
3865         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3866         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3867                 return;
3868         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3869 }
3870
3871
3872 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3873 {
3874         switch (mode) {
3875         case NL80211_IFTYPE_ADHOC:
3876                 return "ADHOC";
3877         case NL80211_IFTYPE_STATION:
3878                 return "STATION";
3879         case NL80211_IFTYPE_AP:
3880                 return "AP";
3881         case NL80211_IFTYPE_AP_VLAN:
3882                 return "AP_VLAN";
3883         case NL80211_IFTYPE_WDS:
3884                 return "WDS";
3885         case NL80211_IFTYPE_MONITOR:
3886                 return "MONITOR";
3887         case NL80211_IFTYPE_MESH_POINT:
3888                 return "MESH_POINT";
3889         case NL80211_IFTYPE_P2P_CLIENT:
3890                 return "P2P_CLIENT";
3891         case NL80211_IFTYPE_P2P_GO:
3892                 return "P2P_GO";
3893         case NL80211_IFTYPE_P2P_DEVICE:
3894                 return "P2P_DEVICE";
3895         default:
3896                 return "unknown";
3897         }
3898 }
3899
3900
3901 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3902                                      const char *ifname,
3903                                      enum nl80211_iftype iftype,
3904                                      const u8 *addr, int wds,
3905                                      int (*handler)(struct nl_msg *, void *),
3906                                      void *arg)
3907 {
3908         struct nl_msg *msg;
3909         int ifidx;
3910         int ret = -ENOBUFS;
3911
3912         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3913                    iftype, nl80211_iftype_str(iftype));
3914
3915         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3916         if (!msg ||
3917             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3918             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3919                 goto fail;
3920
3921         if (iftype == NL80211_IFTYPE_MONITOR) {
3922                 struct nlattr *flags;
3923
3924                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3925                 if (!flags ||
3926                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3927                         goto fail;
3928
3929                 nla_nest_end(msg, flags);
3930         } else if (wds) {
3931                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
3932                         goto fail;
3933         }
3934
3935         /*
3936          * Tell cfg80211 that the interface belongs to the socket that created
3937          * it, and the interface should be deleted when the socket is closed.
3938          */
3939         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
3940                 goto fail;
3941
3942         ret = send_and_recv_msgs(drv, msg, handler, arg);
3943         msg = NULL;
3944         if (ret) {
3945         fail:
3946                 nlmsg_free(msg);
3947                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3948                            ifname, ret, strerror(-ret));
3949                 return ret;
3950         }
3951
3952         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
3953                 return 0;
3954
3955         ifidx = if_nametoindex(ifname);
3956         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3957                    ifname, ifidx);
3958
3959         if (ifidx <= 0)
3960                 return -1;
3961
3962         /*
3963          * Some virtual interfaces need to process EAPOL packets and events on
3964          * the parent interface. This is used mainly with hostapd.
3965          */
3966         if (drv->hostapd ||
3967             iftype == NL80211_IFTYPE_AP_VLAN ||
3968             iftype == NL80211_IFTYPE_WDS ||
3969             iftype == NL80211_IFTYPE_MONITOR) {
3970                 /* start listening for EAPOL on this interface */
3971                 add_ifidx(drv, ifidx);
3972         }
3973
3974         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3975             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
3976                 nl80211_remove_iface(drv, ifidx);
3977                 return -1;
3978         }
3979
3980         return ifidx;
3981 }
3982
3983
3984 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3985                          const char *ifname, enum nl80211_iftype iftype,
3986                          const u8 *addr, int wds,
3987                          int (*handler)(struct nl_msg *, void *),
3988                          void *arg, int use_existing)
3989 {
3990         int ret;
3991
3992         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
3993                                         arg);
3994
3995         /* if error occurred and interface exists already */
3996         if (ret == -ENFILE && if_nametoindex(ifname)) {
3997                 if (use_existing) {
3998                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
3999                                    ifname);
4000                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4001                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4002                                                addr) < 0 &&
4003                             (linux_set_iface_flags(drv->global->ioctl_sock,
4004                                                    ifname, 0) < 0 ||
4005                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4006                                                 addr) < 0 ||
4007                              linux_set_iface_flags(drv->global->ioctl_sock,
4008                                                    ifname, 1) < 0))
4009                                         return -1;
4010                         return -ENFILE;
4011                 }
4012                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4013
4014                 /* Try to remove the interface that was already there. */
4015                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4016
4017                 /* Try to create the interface again */
4018                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4019                                                 wds, handler, arg);
4020         }
4021
4022         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4023                 wpa_printf(MSG_DEBUG,
4024                            "nl80211: Interface %s created for P2P - disable 11b rates",
4025                            ifname);
4026                 nl80211_disable_11b_rates(drv, ret, 1);
4027         }
4028
4029         return ret;
4030 }
4031
4032
4033 static int nl80211_setup_ap(struct i802_bss *bss)
4034 {
4035         struct wpa_driver_nl80211_data *drv = bss->drv;
4036
4037         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4038                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4039
4040         /*
4041          * Disable Probe Request reporting unless we need it in this way for
4042          * devices that include the AP SME, in the other case (unless using
4043          * monitor iface) we'll get it through the nl_mgmt socket instead.
4044          */
4045         if (!drv->device_ap_sme)
4046                 wpa_driver_nl80211_probe_req_report(bss, 0);
4047
4048         if (!drv->device_ap_sme && !drv->use_monitor)
4049                 if (nl80211_mgmt_subscribe_ap(bss))
4050                         return -1;
4051
4052         if (drv->device_ap_sme && !drv->use_monitor)
4053                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4054                         return -1;
4055
4056         if (!drv->device_ap_sme && drv->use_monitor &&
4057             nl80211_create_monitor_interface(drv) &&
4058             !drv->device_ap_sme)
4059                 return -1;
4060
4061         if (drv->device_ap_sme &&
4062             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4063                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4064                            "Probe Request frame reporting in AP mode");
4065                 /* Try to survive without this */
4066         }
4067
4068         return 0;
4069 }
4070
4071
4072 static void nl80211_teardown_ap(struct i802_bss *bss)
4073 {
4074         struct wpa_driver_nl80211_data *drv = bss->drv;
4075
4076         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4077                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4078         if (drv->device_ap_sme) {
4079                 wpa_driver_nl80211_probe_req_report(bss, 0);
4080                 if (!drv->use_monitor)
4081                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4082         } else if (drv->use_monitor)
4083                 nl80211_remove_monitor_interface(drv);
4084         else
4085                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4086
4087         bss->beacon_set = 0;
4088 }
4089
4090
4091 static int nl80211_send_eapol_data(struct i802_bss *bss,
4092                                    const u8 *addr, const u8 *data,
4093                                    size_t data_len)
4094 {
4095         struct sockaddr_ll ll;
4096         int ret;
4097
4098         if (bss->drv->eapol_tx_sock < 0) {
4099                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4100                 return -1;
4101         }
4102
4103         os_memset(&ll, 0, sizeof(ll));
4104         ll.sll_family = AF_PACKET;
4105         ll.sll_ifindex = bss->ifindex;
4106         ll.sll_protocol = htons(ETH_P_PAE);
4107         ll.sll_halen = ETH_ALEN;
4108         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4109         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4110                      (struct sockaddr *) &ll, sizeof(ll));
4111         if (ret < 0)
4112                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4113                            strerror(errno));
4114
4115         return ret;
4116 }
4117
4118
4119 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4120
4121 static int wpa_driver_nl80211_hapd_send_eapol(
4122         void *priv, const u8 *addr, const u8 *data,
4123         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4124 {
4125         struct i802_bss *bss = priv;
4126         struct wpa_driver_nl80211_data *drv = bss->drv;
4127         struct ieee80211_hdr *hdr;
4128         size_t len;
4129         u8 *pos;
4130         int res;
4131         int qos = flags & WPA_STA_WMM;
4132
4133         if (drv->device_ap_sme || !drv->use_monitor)
4134                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4135
4136         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4137                 data_len;
4138         hdr = os_zalloc(len);
4139         if (hdr == NULL) {
4140                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4141                            (unsigned long) len);
4142                 return -1;
4143         }
4144
4145         hdr->frame_control =
4146                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4147         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4148         if (encrypt)
4149                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4150         if (qos) {
4151                 hdr->frame_control |=
4152                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4153         }
4154
4155         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4156         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4157         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4158         pos = (u8 *) (hdr + 1);
4159
4160         if (qos) {
4161                 /* Set highest priority in QoS header */
4162                 pos[0] = 7;
4163                 pos[1] = 0;
4164                 pos += 2;
4165         }
4166
4167         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4168         pos += sizeof(rfc1042_header);
4169         WPA_PUT_BE16(pos, ETH_P_PAE);
4170         pos += 2;
4171         memcpy(pos, data, data_len);
4172
4173         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4174                                             0, 0, 0, 0);
4175         if (res < 0) {
4176                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4177                            "failed: %d (%s)",
4178                            (unsigned long) len, errno, strerror(errno));
4179         }
4180         os_free(hdr);
4181
4182         return res;
4183 }
4184
4185
4186 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4187                                             int total_flags,
4188                                             int flags_or, int flags_and)
4189 {
4190         struct i802_bss *bss = priv;
4191         struct nl_msg *msg;
4192         struct nlattr *flags;
4193         struct nl80211_sta_flag_update upd;
4194
4195         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4196                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4197                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4198                    !!(total_flags & WPA_STA_AUTHORIZED));
4199
4200         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4201             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4202                 goto fail;
4203
4204         /*
4205          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4206          * can be removed eventually.
4207          */
4208         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4209         if (!flags ||
4210             ((total_flags & WPA_STA_AUTHORIZED) &&
4211              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4212             ((total_flags & WPA_STA_WMM) &&
4213              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4214             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4215              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4216             ((total_flags & WPA_STA_MFP) &&
4217              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4218             ((total_flags & WPA_STA_TDLS_PEER) &&
4219              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4220                 goto fail;
4221
4222         nla_nest_end(msg, flags);
4223
4224         os_memset(&upd, 0, sizeof(upd));
4225         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4226         upd.set = sta_flags_nl80211(flags_or);
4227         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4228                 goto fail;
4229
4230         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4231 fail:
4232         nlmsg_free(msg);
4233         return -ENOBUFS;
4234 }
4235
4236
4237 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4238                                  struct wpa_driver_associate_params *params)
4239 {
4240         enum nl80211_iftype nlmode, old_mode;
4241
4242         if (params->p2p) {
4243                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4244                            "group (GO)");
4245                 nlmode = NL80211_IFTYPE_P2P_GO;
4246         } else
4247                 nlmode = NL80211_IFTYPE_AP;
4248
4249         old_mode = drv->nlmode;
4250         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4251                 nl80211_remove_monitor_interface(drv);
4252                 return -1;
4253         }
4254
4255         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4256                 if (old_mode != nlmode)
4257                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4258                 nl80211_remove_monitor_interface(drv);
4259                 return -1;
4260         }
4261
4262         return 0;
4263 }
4264
4265
4266 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4267                               int reset_mode)
4268 {
4269         struct nl_msg *msg;
4270         int ret;
4271
4272         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4273         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4274         if (ret) {
4275                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4276                            "(%s)", ret, strerror(-ret));
4277         } else {
4278                 wpa_printf(MSG_DEBUG,
4279                            "nl80211: Leave IBSS request sent successfully");
4280         }
4281
4282         if (reset_mode &&
4283             wpa_driver_nl80211_set_mode(drv->first_bss,
4284                                         NL80211_IFTYPE_STATION)) {
4285                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4286                            "station mode");
4287         }
4288
4289         return ret;
4290 }
4291
4292
4293 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4294                                     struct wpa_driver_associate_params *params)
4295 {
4296         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4297                 return -1;
4298
4299         if (params->htcaps && params->htcaps_mask) {
4300                 int sz = sizeof(struct ieee80211_ht_capabilities);
4301                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4302                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4303                             params->htcaps_mask, sz);
4304                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4305                             params->htcaps) ||
4306                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4307                             params->htcaps_mask))
4308                         return -1;
4309         }
4310
4311 #ifdef CONFIG_VHT_OVERRIDES
4312         if (params->disable_vht) {
4313                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4314                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4315                         return -1;
4316         }
4317
4318         if (params->vhtcaps && params->vhtcaps_mask) {
4319                 int sz = sizeof(struct ieee80211_vht_capabilities);
4320                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4321                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4322                             params->vhtcaps_mask, sz);
4323                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4324                             params->vhtcaps) ||
4325                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4326                             params->vhtcaps_mask))
4327                         return -1;
4328         }
4329 #endif /* CONFIG_VHT_OVERRIDES */
4330
4331         return 0;
4332 }
4333
4334
4335 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4336                                    struct wpa_driver_associate_params *params)
4337 {
4338         struct nl_msg *msg;
4339         int ret = -1;
4340         int count = 0;
4341
4342         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4343
4344         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4345                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4346                            "IBSS mode");
4347                 return -1;
4348         }
4349
4350 retry:
4351         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4352             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4353                 goto fail;
4354
4355         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4356                           params->ssid, params->ssid_len);
4357         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4358                 goto fail;
4359         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4360         drv->ssid_len = params->ssid_len;
4361
4362         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4363             nl80211_put_beacon_int(msg, params->beacon_int))
4364                 goto fail;
4365
4366         ret = nl80211_set_conn_keys(params, msg);
4367         if (ret)
4368                 goto fail;
4369
4370         if (params->bssid && params->fixed_bssid) {
4371                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4372                            MAC2STR(params->bssid));
4373                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4374                         goto fail;
4375         }
4376
4377         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4378             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4379             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4380             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4381                 wpa_printf(MSG_DEBUG, "  * control port");
4382                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4383                         goto fail;
4384         }
4385
4386         if (params->wpa_ie) {
4387                 wpa_hexdump(MSG_DEBUG,
4388                             "  * Extra IEs for Beacon/Probe Response frames",
4389                             params->wpa_ie, params->wpa_ie_len);
4390                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4391                             params->wpa_ie))
4392                         goto fail;
4393         }
4394
4395         if (nl80211_ht_vht_overrides(msg, params) < 0)
4396                 return -1;
4397
4398         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4399         msg = NULL;
4400         if (ret) {
4401                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4402                            ret, strerror(-ret));
4403                 count++;
4404                 if (ret == -EALREADY && count == 1) {
4405                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4406                                    "forced leave");
4407                         nl80211_leave_ibss(drv, 0);
4408                         nlmsg_free(msg);
4409                         goto retry;
4410                 }
4411         } else {
4412                 wpa_printf(MSG_DEBUG,
4413                            "nl80211: Join IBSS request sent successfully");
4414         }
4415
4416 fail:
4417         nlmsg_free(msg);
4418         return ret;
4419 }
4420
4421
4422 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4423                                   struct wpa_driver_associate_params *params,
4424                                   struct nl_msg *msg)
4425 {
4426         if (params->bssid) {
4427                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4428                            MAC2STR(params->bssid));
4429                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4430                         return -1;
4431         }
4432
4433         if (params->bssid_hint) {
4434                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4435                            MAC2STR(params->bssid_hint));
4436                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4437                             params->bssid_hint))
4438                         return -1;
4439         }
4440
4441         if (params->freq.freq) {
4442                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4443                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4444                                 params->freq.freq))
4445                         return -1;
4446                 drv->assoc_freq = params->freq.freq;
4447         } else
4448                 drv->assoc_freq = 0;
4449
4450         if (params->freq_hint) {
4451                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4452                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4453                                 params->freq_hint))
4454                         return -1;
4455         }
4456
4457         if (params->bg_scan_period >= 0) {
4458                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4459                            params->bg_scan_period);
4460                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4461                                 params->bg_scan_period))
4462                         return -1;
4463         }
4464
4465         if (params->ssid) {
4466                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4467                                   params->ssid, params->ssid_len);
4468                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4469                             params->ssid))
4470                         return -1;
4471                 if (params->ssid_len > sizeof(drv->ssid))
4472                         return -1;
4473                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4474                 drv->ssid_len = params->ssid_len;
4475         }
4476
4477         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4478         if (params->wpa_ie &&
4479             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4480                 return -1;
4481
4482         if (params->wpa_proto) {
4483                 enum nl80211_wpa_versions ver = 0;
4484
4485                 if (params->wpa_proto & WPA_PROTO_WPA)
4486                         ver |= NL80211_WPA_VERSION_1;
4487                 if (params->wpa_proto & WPA_PROTO_RSN)
4488                         ver |= NL80211_WPA_VERSION_2;
4489
4490                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4491                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4492                         return -1;
4493         }
4494
4495         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4496                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4497                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4498                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4499                                 cipher))
4500                         return -1;
4501         }
4502
4503         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4504             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4505                 /*
4506                  * This is likely to work even though many drivers do not
4507                  * advertise support for operations without GTK.
4508                  */
4509                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4510         } else if (params->group_suite != WPA_CIPHER_NONE) {
4511                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4512                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4513                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4514                         return -1;
4515         }
4516
4517         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4518             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4519             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4520             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4521             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4522             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4523             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4524             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4525             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4526             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4527                 int mgmt = WLAN_AKM_SUITE_PSK;
4528
4529                 switch (params->key_mgmt_suite) {
4530                 case WPA_KEY_MGMT_CCKM:
4531                         mgmt = WLAN_AKM_SUITE_CCKM;
4532                         break;
4533                 case WPA_KEY_MGMT_IEEE8021X:
4534                         mgmt = WLAN_AKM_SUITE_8021X;
4535                         break;
4536                 case WPA_KEY_MGMT_FT_IEEE8021X:
4537                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4538                         break;
4539                 case WPA_KEY_MGMT_FT_PSK:
4540                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4541                         break;
4542                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4543                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4544                         break;
4545                 case WPA_KEY_MGMT_PSK_SHA256:
4546                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4547                         break;
4548                 case WPA_KEY_MGMT_OSEN:
4549                         mgmt = WLAN_AKM_SUITE_OSEN;
4550                         break;
4551                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4552                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4553                         break;
4554                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4555                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4556                         break;
4557                 case WPA_KEY_MGMT_PSK:
4558                 default:
4559                         mgmt = WLAN_AKM_SUITE_PSK;
4560                         break;
4561                 }
4562                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4563                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4564                         return -1;
4565         }
4566
4567         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4568                 return -1;
4569
4570         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4571             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4572                 return -1;
4573
4574         if (params->rrm_used) {
4575                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4576                 if (!(drv_rrm_flags &
4577                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4578                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4579                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4580                         return -1;
4581         }
4582
4583         if (nl80211_ht_vht_overrides(msg, params) < 0)
4584                 return -1;
4585
4586         if (params->p2p)
4587                 wpa_printf(MSG_DEBUG, "  * P2P group");
4588
4589         return 0;
4590 }
4591
4592
4593 static int wpa_driver_nl80211_try_connect(
4594         struct wpa_driver_nl80211_data *drv,
4595         struct wpa_driver_associate_params *params)
4596 {
4597         struct nl_msg *msg;
4598         enum nl80211_auth_type type;
4599         int ret;
4600         int algs;
4601
4602         if (params->req_key_mgmt_offload && params->psk &&
4603             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4604              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4605              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4606                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4607                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4608                 if (ret)
4609                         return ret;
4610         }
4611
4612         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4613         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4614         if (!msg)
4615                 return -1;
4616
4617         ret = nl80211_connect_common(drv, params, msg);
4618         if (ret)
4619                 goto fail;
4620
4621         algs = 0;
4622         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4623                 algs++;
4624         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4625                 algs++;
4626         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4627                 algs++;
4628         if (algs > 1) {
4629                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4630                            "selection");
4631                 goto skip_auth_type;
4632         }
4633
4634         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4635                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4636         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4637                 type = NL80211_AUTHTYPE_SHARED_KEY;
4638         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4639                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4640         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4641                 type = NL80211_AUTHTYPE_FT;
4642         else
4643                 goto fail;
4644
4645         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4646         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4647                 goto fail;
4648
4649 skip_auth_type:
4650         ret = nl80211_set_conn_keys(params, msg);
4651         if (ret)
4652                 goto fail;
4653
4654         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4655         msg = NULL;
4656         if (ret) {
4657                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4658                            "(%s)", ret, strerror(-ret));
4659         } else {
4660                 wpa_printf(MSG_DEBUG,
4661                            "nl80211: Connect request send successfully");
4662         }
4663
4664 fail:
4665         nlmsg_free(msg);
4666         return ret;
4667
4668 }
4669
4670
4671 static int wpa_driver_nl80211_connect(
4672         struct wpa_driver_nl80211_data *drv,
4673         struct wpa_driver_associate_params *params)
4674 {
4675         int ret;
4676
4677         /* Store the connection attempted bssid for future use */
4678         if (params->bssid)
4679                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4680         else
4681                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4682
4683         ret = wpa_driver_nl80211_try_connect(drv, params);
4684         if (ret == -EALREADY) {
4685                 /*
4686                  * cfg80211 does not currently accept new connections if
4687                  * we are already connected. As a workaround, force
4688                  * disconnection and try again.
4689                  */
4690                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4691                            "disconnecting before reassociation "
4692                            "attempt");
4693                 if (wpa_driver_nl80211_disconnect(
4694                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4695                         return -1;
4696                 ret = wpa_driver_nl80211_try_connect(drv, params);
4697         }
4698         return ret;
4699 }
4700
4701
4702 static int wpa_driver_nl80211_associate(
4703         void *priv, struct wpa_driver_associate_params *params)
4704 {
4705         struct i802_bss *bss = priv;
4706         struct wpa_driver_nl80211_data *drv = bss->drv;
4707         int ret = -1;
4708         struct nl_msg *msg;
4709
4710         nl80211_unmask_11b_rates(bss);
4711
4712         if (params->mode == IEEE80211_MODE_AP)
4713                 return wpa_driver_nl80211_ap(drv, params);
4714
4715         if (params->mode == IEEE80211_MODE_IBSS)
4716                 return wpa_driver_nl80211_ibss(drv, params);
4717
4718         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4719                 enum nl80211_iftype nlmode = params->p2p ?
4720                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4721
4722                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4723                         return -1;
4724                 return wpa_driver_nl80211_connect(drv, params);
4725         }
4726
4727         nl80211_mark_disconnected(drv);
4728
4729         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4730                    drv->ifindex);
4731         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4732         if (!msg)
4733                 return -1;
4734
4735         ret = nl80211_connect_common(drv, params, msg);
4736         if (ret)
4737                 goto fail;
4738
4739         if (params->prev_bssid) {
4740                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4741                            MAC2STR(params->prev_bssid));
4742                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4743                             params->prev_bssid))
4744                         goto fail;
4745         }
4746
4747         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4748         msg = NULL;
4749         if (ret) {
4750                 wpa_dbg(drv->ctx, MSG_DEBUG,
4751                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4752                         ret, strerror(-ret));
4753                 nl80211_dump_scan(drv);
4754         } else {
4755                 wpa_printf(MSG_DEBUG,
4756                            "nl80211: Association request send successfully");
4757         }
4758
4759 fail:
4760         nlmsg_free(msg);
4761         return ret;
4762 }
4763
4764
4765 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4766                             int ifindex, enum nl80211_iftype mode)
4767 {
4768         struct nl_msg *msg;
4769         int ret = -ENOBUFS;
4770
4771         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4772                    ifindex, mode, nl80211_iftype_str(mode));
4773
4774         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4775         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4776                 goto fail;
4777
4778         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4779         msg = NULL;
4780         if (!ret)
4781                 return 0;
4782 fail:
4783         nlmsg_free(msg);
4784         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4785                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4786         return ret;
4787 }
4788
4789
4790 static int wpa_driver_nl80211_set_mode_impl(
4791                 struct i802_bss *bss,
4792                 enum nl80211_iftype nlmode,
4793                 struct hostapd_freq_params *desired_freq_params)
4794 {
4795         struct wpa_driver_nl80211_data *drv = bss->drv;
4796         int ret = -1;
4797         int i;
4798         int was_ap = is_ap_interface(drv->nlmode);
4799         int res;
4800         int mode_switch_res;
4801
4802         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4803         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4804                 mode_switch_res = 0;
4805
4806         if (mode_switch_res == 0) {
4807                 drv->nlmode = nlmode;
4808                 ret = 0;
4809                 goto done;
4810         }
4811
4812         if (mode_switch_res == -ENODEV)
4813                 return -1;
4814
4815         if (nlmode == drv->nlmode) {
4816                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4817                            "requested mode - ignore error");
4818                 ret = 0;
4819                 goto done; /* Already in the requested mode */
4820         }
4821
4822         /* mac80211 doesn't allow mode changes while the device is up, so
4823          * take the device down, try to set the mode again, and bring the
4824          * device back up.
4825          */
4826         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4827                    "interface down");
4828         for (i = 0; i < 10; i++) {
4829                 res = i802_set_iface_flags(bss, 0);
4830                 if (res == -EACCES || res == -ENODEV)
4831                         break;
4832                 if (res != 0) {
4833                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4834                                    "interface down");
4835                         os_sleep(0, 100000);
4836                         continue;
4837                 }
4838
4839                 /*
4840                  * Setting the mode will fail for some drivers if the phy is
4841                  * on a frequency that the mode is disallowed in.
4842                  */
4843                 if (desired_freq_params) {
4844                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4845                         if (res) {
4846                                 wpa_printf(MSG_DEBUG,
4847                                            "nl80211: Failed to set frequency on interface");
4848                         }
4849                 }
4850
4851                 /* Try to set the mode again while the interface is down */
4852                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4853                 if (mode_switch_res == -EBUSY) {
4854                         wpa_printf(MSG_DEBUG,
4855                                    "nl80211: Delaying mode set while interface going down");
4856                         os_sleep(0, 100000);
4857                         continue;
4858                 }
4859                 ret = mode_switch_res;
4860                 break;
4861         }
4862
4863         if (!ret) {
4864                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4865                            "interface is down");
4866                 drv->nlmode = nlmode;
4867                 drv->ignore_if_down_event = 1;
4868         }
4869
4870         /* Bring the interface back up */
4871         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4872         if (res != 0) {
4873                 wpa_printf(MSG_DEBUG,
4874                            "nl80211: Failed to set interface up after switching mode");
4875                 ret = -1;
4876         }
4877
4878 done:
4879         if (ret) {
4880                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4881                            "from %d failed", nlmode, drv->nlmode);
4882                 return ret;
4883         }
4884
4885         if (is_p2p_net_interface(nlmode)) {
4886                 wpa_printf(MSG_DEBUG,
4887                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4888                            bss->ifname);
4889                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4890         } else if (drv->disabled_11b_rates) {
4891                 wpa_printf(MSG_DEBUG,
4892                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4893                            bss->ifname);
4894                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4895         }
4896
4897         if (is_ap_interface(nlmode)) {
4898                 nl80211_mgmt_unsubscribe(bss, "start AP");
4899                 /* Setup additional AP mode functionality if needed */
4900                 if (nl80211_setup_ap(bss))
4901                         return -1;
4902         } else if (was_ap) {
4903                 /* Remove additional AP mode functionality */
4904                 nl80211_teardown_ap(bss);
4905         } else {
4906                 nl80211_mgmt_unsubscribe(bss, "mode change");
4907         }
4908
4909         if (is_mesh_interface(nlmode) &&
4910             nl80211_mgmt_subscribe_mesh(bss))
4911                 return -1;
4912
4913         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4914             !is_mesh_interface(nlmode) &&
4915             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4916                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4917                            "frame processing - ignore for now");
4918
4919         return 0;
4920 }
4921
4922
4923 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
4924                                 enum nl80211_iftype nlmode)
4925 {
4926         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
4927 }
4928
4929
4930 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
4931                                             struct hostapd_freq_params *freq)
4932 {
4933         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
4934                                                 freq);
4935 }
4936
4937
4938 static int wpa_driver_nl80211_get_capa(void *priv,
4939                                        struct wpa_driver_capa *capa)
4940 {
4941         struct i802_bss *bss = priv;
4942         struct wpa_driver_nl80211_data *drv = bss->drv;
4943
4944         if (!drv->has_capability)
4945                 return -1;
4946         os_memcpy(capa, &drv->capa, sizeof(*capa));
4947         if (drv->extended_capa && drv->extended_capa_mask) {
4948                 capa->extended_capa = drv->extended_capa;
4949                 capa->extended_capa_mask = drv->extended_capa_mask;
4950                 capa->extended_capa_len = drv->extended_capa_len;
4951         }
4952
4953         return 0;
4954 }
4955
4956
4957 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4958 {
4959         struct i802_bss *bss = priv;
4960         struct wpa_driver_nl80211_data *drv = bss->drv;
4961
4962         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
4963                    bss->ifname, drv->operstate, state,
4964                    state ? "UP" : "DORMANT");
4965         drv->operstate = state;
4966         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
4967                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4968 }
4969
4970
4971 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4972 {
4973         struct i802_bss *bss = priv;
4974         struct wpa_driver_nl80211_data *drv = bss->drv;
4975         struct nl_msg *msg;
4976         struct nl80211_sta_flag_update upd;
4977         int ret;
4978
4979         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
4980                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
4981                 return 0;
4982         }
4983
4984         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
4985                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
4986
4987         os_memset(&upd, 0, sizeof(upd));
4988         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4989         if (authorized)
4990                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4991
4992         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4993             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
4994             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
4995                 nlmsg_free(msg);
4996                 return -ENOBUFS;
4997         }
4998
4999         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5000         if (!ret)
5001                 return 0;
5002         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5003                    ret, strerror(-ret));
5004         return ret;
5005 }
5006
5007
5008 /* Set kernel driver on given frequency (MHz) */
5009 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5010 {
5011         struct i802_bss *bss = priv;
5012         return nl80211_set_channel(bss, freq, 0);
5013 }
5014
5015
5016 static inline int min_int(int a, int b)
5017 {
5018         if (a < b)
5019                 return a;
5020         return b;
5021 }
5022
5023
5024 static int get_key_handler(struct nl_msg *msg, void *arg)
5025 {
5026         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5027         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5028
5029         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5030                   genlmsg_attrlen(gnlh, 0), NULL);
5031
5032         /*
5033          * TODO: validate the key index and mac address!
5034          * Otherwise, there's a race condition as soon as
5035          * the kernel starts sending key notifications.
5036          */
5037
5038         if (tb[NL80211_ATTR_KEY_SEQ])
5039                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5040                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5041         return NL_SKIP;
5042 }
5043
5044
5045 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5046                            int idx, u8 *seq)
5047 {
5048         struct i802_bss *bss = priv;
5049         struct wpa_driver_nl80211_data *drv = bss->drv;
5050         struct nl_msg *msg;
5051
5052         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5053                                   NL80211_CMD_GET_KEY);
5054         if (!msg ||
5055             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5056             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5057                 nlmsg_free(msg);
5058                 return -ENOBUFS;
5059         }
5060
5061         memset(seq, 0, 6);
5062
5063         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5064 }
5065
5066
5067 static int i802_set_rts(void *priv, int rts)
5068 {
5069         struct i802_bss *bss = priv;
5070         struct wpa_driver_nl80211_data *drv = bss->drv;
5071         struct nl_msg *msg;
5072         int ret;
5073         u32 val;
5074
5075         if (rts >= 2347)
5076                 val = (u32) -1;
5077         else
5078                 val = rts;
5079
5080         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5081             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5082                 nlmsg_free(msg);
5083                 return -ENOBUFS;
5084         }
5085
5086         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5087         if (!ret)
5088                 return 0;
5089         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5090                    "%d (%s)", rts, ret, strerror(-ret));
5091         return ret;
5092 }
5093
5094
5095 static int i802_set_frag(void *priv, int frag)
5096 {
5097         struct i802_bss *bss = priv;
5098         struct wpa_driver_nl80211_data *drv = bss->drv;
5099         struct nl_msg *msg;
5100         int ret;
5101         u32 val;
5102
5103         if (frag >= 2346)
5104                 val = (u32) -1;
5105         else
5106                 val = frag;
5107
5108         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5109             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5110                 nlmsg_free(msg);
5111                 return -ENOBUFS;
5112         }
5113
5114         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5115         if (!ret)
5116                 return 0;
5117         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5118                    "%d: %d (%s)", frag, ret, strerror(-ret));
5119         return ret;
5120 }
5121
5122
5123 static int i802_flush(void *priv)
5124 {
5125         struct i802_bss *bss = priv;
5126         struct nl_msg *msg;
5127         int res;
5128
5129         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5130                    bss->ifname);
5131
5132         /*
5133          * XXX: FIX! this needs to flush all VLANs too
5134          */
5135         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5136         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5137         if (res) {
5138                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5139                            "(%s)", res, strerror(-res));
5140         }
5141         return res;
5142 }
5143
5144
5145 static int get_sta_handler(struct nl_msg *msg, void *arg)
5146 {
5147         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5148         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5149         struct hostap_sta_driver_data *data = arg;
5150         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5151         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5152                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5153                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5154                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5155                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5156                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5157                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5158         };
5159
5160         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5161                   genlmsg_attrlen(gnlh, 0), NULL);
5162
5163         /*
5164          * TODO: validate the interface and mac address!
5165          * Otherwise, there's a race condition as soon as
5166          * the kernel starts sending station notifications.
5167          */
5168
5169         if (!tb[NL80211_ATTR_STA_INFO]) {
5170                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5171                 return NL_SKIP;
5172         }
5173         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5174                              tb[NL80211_ATTR_STA_INFO],
5175                              stats_policy)) {
5176                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5177                 return NL_SKIP;
5178         }
5179
5180         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5181                 data->inactive_msec =
5182                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5183         if (stats[NL80211_STA_INFO_RX_BYTES])
5184                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5185         if (stats[NL80211_STA_INFO_TX_BYTES])
5186                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5187         if (stats[NL80211_STA_INFO_RX_PACKETS])
5188                 data->rx_packets =
5189                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5190         if (stats[NL80211_STA_INFO_TX_PACKETS])
5191                 data->tx_packets =
5192                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5193         if (stats[NL80211_STA_INFO_TX_FAILED])
5194                 data->tx_retry_failed =
5195                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5196
5197         return NL_SKIP;
5198 }
5199
5200 static int i802_read_sta_data(struct i802_bss *bss,
5201                               struct hostap_sta_driver_data *data,
5202                               const u8 *addr)
5203 {
5204         struct nl_msg *msg;
5205
5206         os_memset(data, 0, sizeof(*data));
5207
5208         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5209             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5210                 nlmsg_free(msg);
5211                 return -ENOBUFS;
5212         }
5213
5214         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5215 }
5216
5217
5218 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5219                                     int cw_min, int cw_max, int burst_time)
5220 {
5221         struct i802_bss *bss = priv;
5222         struct wpa_driver_nl80211_data *drv = bss->drv;
5223         struct nl_msg *msg;
5224         struct nlattr *txq, *params;
5225
5226         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5227         if (!msg)
5228                 return -1;
5229
5230         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5231         if (!txq)
5232                 goto fail;
5233
5234         /* We are only sending parameters for a single TXQ at a time */
5235         params = nla_nest_start(msg, 1);
5236         if (!params)
5237                 goto fail;
5238
5239         switch (queue) {
5240         case 0:
5241                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5242                         goto fail;
5243                 break;
5244         case 1:
5245                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5246                         goto fail;
5247                 break;
5248         case 2:
5249                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5250                         goto fail;
5251                 break;
5252         case 3:
5253                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5254                         goto fail;
5255                 break;
5256         }
5257         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5258          * 32 usec, so need to convert the value here. */
5259         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5260                         (burst_time * 100 + 16) / 32) ||
5261             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5262             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5263             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5264                 goto fail;
5265
5266         nla_nest_end(msg, params);
5267
5268         nla_nest_end(msg, txq);
5269
5270         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5271                 return 0;
5272         msg = NULL;
5273 fail:
5274         nlmsg_free(msg);
5275         return -1;
5276 }
5277
5278
5279 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5280                              const char *ifname, int vlan_id)
5281 {
5282         struct wpa_driver_nl80211_data *drv = bss->drv;
5283         struct nl_msg *msg;
5284         int ret;
5285
5286         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5287                    ", ifname=%s[%d], vlan_id=%d)",
5288                    bss->ifname, if_nametoindex(bss->ifname),
5289                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5290         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5291             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5292             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5293                 nlmsg_free(msg);
5294                 return -ENOBUFS;
5295         }
5296
5297         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5298         if (ret < 0) {
5299                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5300                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5301                            MAC2STR(addr), ifname, vlan_id, ret,
5302                            strerror(-ret));
5303         }
5304         return ret;
5305 }
5306
5307
5308 static int i802_get_inact_sec(void *priv, const u8 *addr)
5309 {
5310         struct hostap_sta_driver_data data;
5311         int ret;
5312
5313         data.inactive_msec = (unsigned long) -1;
5314         ret = i802_read_sta_data(priv, &data, addr);
5315         if (ret == -ENOENT)
5316                 return -ENOENT;
5317         if (ret || data.inactive_msec == (unsigned long) -1)
5318                 return -1;
5319         return data.inactive_msec / 1000;
5320 }
5321
5322
5323 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5324 {
5325 #if 0
5326         /* TODO */
5327 #endif
5328         return 0;
5329 }
5330
5331
5332 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5333                            int reason)
5334 {
5335         struct i802_bss *bss = priv;
5336         struct wpa_driver_nl80211_data *drv = bss->drv;
5337         struct ieee80211_mgmt mgmt;
5338
5339         if (is_mesh_interface(drv->nlmode))
5340                 return -1;
5341
5342         if (drv->device_ap_sme)
5343                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5344
5345         memset(&mgmt, 0, sizeof(mgmt));
5346         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5347                                           WLAN_FC_STYPE_DEAUTH);
5348         memcpy(mgmt.da, addr, ETH_ALEN);
5349         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5350         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5351         mgmt.u.deauth.reason_code = host_to_le16(reason);
5352         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5353                                             IEEE80211_HDRLEN +
5354                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5355                                             0);
5356 }
5357
5358
5359 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5360                              int reason)
5361 {
5362         struct i802_bss *bss = priv;
5363         struct wpa_driver_nl80211_data *drv = bss->drv;
5364         struct ieee80211_mgmt mgmt;
5365
5366         if (is_mesh_interface(drv->nlmode))
5367                 return -1;
5368
5369         if (drv->device_ap_sme)
5370                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5371
5372         memset(&mgmt, 0, sizeof(mgmt));
5373         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5374                                           WLAN_FC_STYPE_DISASSOC);
5375         memcpy(mgmt.da, addr, ETH_ALEN);
5376         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5377         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5378         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5379         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5380                                             IEEE80211_HDRLEN +
5381                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5382                                             0);
5383 }
5384
5385
5386 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5387 {
5388         char buf[200], *pos, *end;
5389         int i, res;
5390
5391         pos = buf;
5392         end = pos + sizeof(buf);
5393
5394         for (i = 0; i < drv->num_if_indices; i++) {
5395                 if (!drv->if_indices[i])
5396                         continue;
5397                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5398                 if (os_snprintf_error(end - pos, res))
5399                         break;
5400                 pos += res;
5401         }
5402         *pos = '\0';
5403
5404         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5405                    drv->num_if_indices, buf);
5406 }
5407
5408
5409 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5410 {
5411         int i;
5412         int *old;
5413
5414         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5415                    ifidx);
5416         if (have_ifidx(drv, ifidx)) {
5417                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5418                            ifidx);
5419                 return;
5420         }
5421         for (i = 0; i < drv->num_if_indices; i++) {
5422                 if (drv->if_indices[i] == 0) {
5423                         drv->if_indices[i] = ifidx;
5424                         dump_ifidx(drv);
5425                         return;
5426                 }
5427         }
5428
5429         if (drv->if_indices != drv->default_if_indices)
5430                 old = drv->if_indices;
5431         else
5432                 old = NULL;
5433
5434         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5435                                            sizeof(int));
5436         if (!drv->if_indices) {
5437                 if (!old)
5438                         drv->if_indices = drv->default_if_indices;
5439                 else
5440                         drv->if_indices = old;
5441                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5442                            "interfaces");
5443                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5444                 return;
5445         } else if (!old)
5446                 os_memcpy(drv->if_indices, drv->default_if_indices,
5447                           sizeof(drv->default_if_indices));
5448         drv->if_indices[drv->num_if_indices] = ifidx;
5449         drv->num_if_indices++;
5450         dump_ifidx(drv);
5451 }
5452
5453
5454 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5455 {
5456         int i;
5457
5458         for (i = 0; i < drv->num_if_indices; i++) {
5459                 if (drv->if_indices[i] == ifidx) {
5460                         drv->if_indices[i] = 0;
5461                         break;
5462                 }
5463         }
5464         dump_ifidx(drv);
5465 }
5466
5467
5468 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5469 {
5470         int i;
5471
5472         for (i = 0; i < drv->num_if_indices; i++)
5473                 if (drv->if_indices[i] == ifidx)
5474                         return 1;
5475
5476         return 0;
5477 }
5478
5479
5480 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5481                             const char *bridge_ifname, char *ifname_wds)
5482 {
5483         struct i802_bss *bss = priv;
5484         struct wpa_driver_nl80211_data *drv = bss->drv;
5485         char name[IFNAMSIZ + 1];
5486
5487         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5488         if (ifname_wds)
5489                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5490
5491         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5492                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5493         if (val) {
5494                 if (!if_nametoindex(name)) {
5495                         if (nl80211_create_iface(drv, name,
5496                                                  NL80211_IFTYPE_AP_VLAN,
5497                                                  bss->addr, 1, NULL, NULL, 0) <
5498                             0)
5499                                 return -1;
5500                         if (bridge_ifname &&
5501                             linux_br_add_if(drv->global->ioctl_sock,
5502                                             bridge_ifname, name) < 0)
5503                                 return -1;
5504                 }
5505                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5506                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5507                                    "interface %s up", name);
5508                 }
5509                 return i802_set_sta_vlan(priv, addr, name, 0);
5510         } else {
5511                 if (bridge_ifname)
5512                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5513                                         name);
5514
5515                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5516                 nl80211_remove_iface(drv, if_nametoindex(name));
5517                 return 0;
5518         }
5519 }
5520
5521
5522 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5523 {
5524         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5525         struct sockaddr_ll lladdr;
5526         unsigned char buf[3000];
5527         int len;
5528         socklen_t fromlen = sizeof(lladdr);
5529
5530         len = recvfrom(sock, buf, sizeof(buf), 0,
5531                        (struct sockaddr *)&lladdr, &fromlen);
5532         if (len < 0) {
5533                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5534                            strerror(errno));
5535                 return;
5536         }
5537
5538         if (have_ifidx(drv, lladdr.sll_ifindex))
5539                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5540 }
5541
5542
5543 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5544                              struct i802_bss *bss,
5545                              const char *brname, const char *ifname)
5546 {
5547         int br_ifindex;
5548         char in_br[IFNAMSIZ];
5549
5550         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5551         br_ifindex = if_nametoindex(brname);
5552         if (br_ifindex == 0) {
5553                 /*
5554                  * Bridge was configured, but the bridge device does
5555                  * not exist. Try to add it now.
5556                  */
5557                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5558                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5559                                    "bridge interface %s: %s",
5560                                    brname, strerror(errno));
5561                         return -1;
5562                 }
5563                 bss->added_bridge = 1;
5564                 br_ifindex = if_nametoindex(brname);
5565                 add_ifidx(drv, br_ifindex);
5566         }
5567         bss->br_ifindex = br_ifindex;
5568
5569         if (linux_br_get(in_br, ifname) == 0) {
5570                 if (os_strcmp(in_br, brname) == 0)
5571                         return 0; /* already in the bridge */
5572
5573                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5574                            "bridge %s", ifname, in_br);
5575                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5576                     0) {
5577                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5578                                    "remove interface %s from bridge "
5579                                    "%s: %s",
5580                                    ifname, brname, strerror(errno));
5581                         return -1;
5582                 }
5583         }
5584
5585         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5586                    ifname, brname);
5587         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5588                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5589                            "into bridge %s: %s",
5590                            ifname, brname, strerror(errno));
5591                 return -1;
5592         }
5593         bss->added_if_into_bridge = 1;
5594
5595         return 0;
5596 }
5597
5598
5599 static void *i802_init(struct hostapd_data *hapd,
5600                        struct wpa_init_params *params)
5601 {
5602         struct wpa_driver_nl80211_data *drv;
5603         struct i802_bss *bss;
5604         size_t i;
5605         char brname[IFNAMSIZ];
5606         int ifindex, br_ifindex;
5607         int br_added = 0;
5608
5609         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5610                                           params->global_priv, 1,
5611                                           params->bssid, params->driver_params);
5612         if (bss == NULL)
5613                 return NULL;
5614
5615         drv = bss->drv;
5616
5617         if (linux_br_get(brname, params->ifname) == 0) {
5618                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5619                            params->ifname, brname);
5620                 br_ifindex = if_nametoindex(brname);
5621                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5622         } else {
5623                 brname[0] = '\0';
5624                 br_ifindex = 0;
5625         }
5626         bss->br_ifindex = br_ifindex;
5627
5628         for (i = 0; i < params->num_bridge; i++) {
5629                 if (params->bridge[i]) {
5630                         ifindex = if_nametoindex(params->bridge[i]);
5631                         if (ifindex)
5632                                 add_ifidx(drv, ifindex);
5633                         if (ifindex == br_ifindex)
5634                                 br_added = 1;
5635                 }
5636         }
5637
5638         /* start listening for EAPOL on the default AP interface */
5639         add_ifidx(drv, drv->ifindex);
5640
5641         if (params->num_bridge && params->bridge[0]) {
5642                 if (i802_check_bridge(drv, bss, params->bridge[0],
5643                                       params->ifname) < 0)
5644                         goto failed;
5645                 if (os_strcmp(params->bridge[0], brname) != 0)
5646                         br_added = 1;
5647         }
5648
5649         if (!br_added && br_ifindex &&
5650             (params->num_bridge == 0 || !params->bridge[0]))
5651                 add_ifidx(drv, br_ifindex);
5652
5653 #ifdef CONFIG_LIBNL3_ROUTE
5654         if (bss->added_if_into_bridge) {
5655                 drv->rtnl_sk = nl_socket_alloc();
5656                 if (drv->rtnl_sk == NULL) {
5657                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5658                         goto failed;
5659                 }
5660
5661                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5662                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5663                                    strerror(errno));
5664                         goto failed;
5665                 }
5666         }
5667 #endif /* CONFIG_LIBNL3_ROUTE */
5668
5669         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5670         if (drv->eapol_sock < 0) {
5671                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5672                            strerror(errno));
5673                 goto failed;
5674         }
5675
5676         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5677         {
5678                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5679                 goto failed;
5680         }
5681
5682         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5683                                params->own_addr))
5684                 goto failed;
5685         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5686
5687         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5688
5689         return bss;
5690
5691 failed:
5692         wpa_driver_nl80211_deinit(bss);
5693         return NULL;
5694 }
5695
5696
5697 static void i802_deinit(void *priv)
5698 {
5699         struct i802_bss *bss = priv;
5700         wpa_driver_nl80211_deinit(bss);
5701 }
5702
5703
5704 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5705         enum wpa_driver_if_type type)
5706 {
5707         switch (type) {
5708         case WPA_IF_STATION:
5709                 return NL80211_IFTYPE_STATION;
5710         case WPA_IF_P2P_CLIENT:
5711         case WPA_IF_P2P_GROUP:
5712                 return NL80211_IFTYPE_P2P_CLIENT;
5713         case WPA_IF_AP_VLAN:
5714                 return NL80211_IFTYPE_AP_VLAN;
5715         case WPA_IF_AP_BSS:
5716                 return NL80211_IFTYPE_AP;
5717         case WPA_IF_P2P_GO:
5718                 return NL80211_IFTYPE_P2P_GO;
5719         case WPA_IF_P2P_DEVICE:
5720                 return NL80211_IFTYPE_P2P_DEVICE;
5721         case WPA_IF_MESH:
5722                 return NL80211_IFTYPE_MESH_POINT;
5723         }
5724         return -1;
5725 }
5726
5727
5728 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5729
5730 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5731 {
5732         struct wpa_driver_nl80211_data *drv;
5733         dl_list_for_each(drv, &global->interfaces,
5734                          struct wpa_driver_nl80211_data, list) {
5735                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5736                         return 1;
5737         }
5738         return 0;
5739 }
5740
5741
5742 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5743 {
5744         unsigned int idx;
5745
5746         if (!drv->global)
5747                 return -1;
5748
5749         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5750         for (idx = 0; idx < 64; idx++) {
5751                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5752                 new_addr[0] ^= idx << 2;
5753                 if (!nl80211_addr_in_use(drv->global, new_addr))
5754                         break;
5755         }
5756         if (idx == 64)
5757                 return -1;
5758
5759         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5760                    MACSTR, MAC2STR(new_addr));
5761
5762         return 0;
5763 }
5764
5765 #endif /* CONFIG_P2P || CONFIG_MESH */
5766
5767
5768 struct wdev_info {
5769         u64 wdev_id;
5770         int wdev_id_set;
5771         u8 macaddr[ETH_ALEN];
5772 };
5773
5774 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5775 {
5776         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5777         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5778         struct wdev_info *wi = arg;
5779
5780         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5781                   genlmsg_attrlen(gnlh, 0), NULL);
5782         if (tb[NL80211_ATTR_WDEV]) {
5783                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5784                 wi->wdev_id_set = 1;
5785         }
5786
5787         if (tb[NL80211_ATTR_MAC])
5788                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5789                           ETH_ALEN);
5790
5791         return NL_SKIP;
5792 }
5793
5794
5795 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5796                                      const char *ifname, const u8 *addr,
5797                                      void *bss_ctx, void **drv_priv,
5798                                      char *force_ifname, u8 *if_addr,
5799                                      const char *bridge, int use_existing)
5800 {
5801         enum nl80211_iftype nlmode;
5802         struct i802_bss *bss = priv;
5803         struct wpa_driver_nl80211_data *drv = bss->drv;
5804         int ifidx;
5805         int added = 1;
5806
5807         if (addr)
5808                 os_memcpy(if_addr, addr, ETH_ALEN);
5809         nlmode = wpa_driver_nl80211_if_type(type);
5810         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5811                 struct wdev_info p2pdev_info;
5812
5813                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5814                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5815                                              0, nl80211_wdev_handler,
5816                                              &p2pdev_info, use_existing);
5817                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5818                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5819                                    ifname);
5820                         return -1;
5821                 }
5822
5823                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5824                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5825                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5826                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5827                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5828                            ifname,
5829                            (long long unsigned int) p2pdev_info.wdev_id);
5830         } else {
5831                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5832                                              0, NULL, NULL, use_existing);
5833                 if (use_existing && ifidx == -ENFILE) {
5834                         added = 0;
5835                         ifidx = if_nametoindex(ifname);
5836                 } else if (ifidx < 0) {
5837                         return -1;
5838                 }
5839         }
5840
5841         if (!addr) {
5842                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5843                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5844                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5845                                             bss->ifname, if_addr) < 0) {
5846                         if (added)
5847                                 nl80211_remove_iface(drv, ifidx);
5848                         return -1;
5849                 }
5850         }
5851
5852 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5853         if (!addr &&
5854             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5855              type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
5856                 /* Enforce unique P2P Interface Address */
5857                 u8 new_addr[ETH_ALEN];
5858
5859                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5860                                        new_addr) < 0) {
5861                         if (added)
5862                                 nl80211_remove_iface(drv, ifidx);
5863                         return -1;
5864                 }
5865                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5866                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5867                                    "for %s interface", type == WPA_IF_MESH ?
5868                                    "mesh" : "P2P group");
5869                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5870                                 if (added)
5871                                         nl80211_remove_iface(drv, ifidx);
5872                                 return -1;
5873                         }
5874                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5875                                                new_addr) < 0) {
5876                                 if (added)
5877                                         nl80211_remove_iface(drv, ifidx);
5878                                 return -1;
5879                         }
5880                 }
5881                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5882         }
5883 #endif /* CONFIG_P2P || CONFIG_MESH */
5884
5885         if (type == WPA_IF_AP_BSS) {
5886                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5887                 if (new_bss == NULL) {
5888                         if (added)
5889                                 nl80211_remove_iface(drv, ifidx);
5890                         return -1;
5891                 }
5892
5893                 if (bridge &&
5894                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5895                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5896                                    "interface %s to a bridge %s",
5897                                    ifname, bridge);
5898                         if (added)
5899                                 nl80211_remove_iface(drv, ifidx);
5900                         os_free(new_bss);
5901                         return -1;
5902                 }
5903
5904                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5905                 {
5906                         if (added)
5907                                 nl80211_remove_iface(drv, ifidx);
5908                         os_free(new_bss);
5909                         return -1;
5910                 }
5911                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5912                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5913                 new_bss->ifindex = ifidx;
5914                 new_bss->drv = drv;
5915                 new_bss->next = drv->first_bss->next;
5916                 new_bss->freq = drv->first_bss->freq;
5917                 new_bss->ctx = bss_ctx;
5918                 new_bss->added_if = added;
5919                 drv->first_bss->next = new_bss;
5920                 if (drv_priv)
5921                         *drv_priv = new_bss;
5922                 nl80211_init_bss(new_bss);
5923
5924                 /* Subscribe management frames for this WPA_IF_AP_BSS */
5925                 if (nl80211_setup_ap(new_bss))
5926                         return -1;
5927         }
5928
5929         if (drv->global)
5930                 drv->global->if_add_ifindex = ifidx;
5931
5932         /*
5933          * Some virtual interfaces need to process EAPOL packets and events on
5934          * the parent interface. This is used mainly with hostapd.
5935          */
5936         if (ifidx > 0 &&
5937             (drv->hostapd ||
5938              nlmode == NL80211_IFTYPE_AP_VLAN ||
5939              nlmode == NL80211_IFTYPE_WDS ||
5940              nlmode == NL80211_IFTYPE_MONITOR))
5941                 add_ifidx(drv, ifidx);
5942
5943         return 0;
5944 }
5945
5946
5947 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
5948                                         enum wpa_driver_if_type type,
5949                                         const char *ifname)
5950 {
5951         struct wpa_driver_nl80211_data *drv = bss->drv;
5952         int ifindex = if_nametoindex(ifname);
5953
5954         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
5955                    __func__, type, ifname, ifindex, bss->added_if);
5956         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
5957                 nl80211_remove_iface(drv, ifindex);
5958         else if (ifindex > 0 && !bss->added_if) {
5959                 struct wpa_driver_nl80211_data *drv2;
5960                 dl_list_for_each(drv2, &drv->global->interfaces,
5961                                  struct wpa_driver_nl80211_data, list)
5962                         del_ifidx(drv2, ifindex);
5963         }
5964
5965         if (type != WPA_IF_AP_BSS)
5966                 return 0;
5967
5968         if (bss->added_if_into_bridge) {
5969                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
5970                                     bss->ifname) < 0)
5971                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5972                                    "interface %s from bridge %s: %s",
5973                                    bss->ifname, bss->brname, strerror(errno));
5974         }
5975         if (bss->added_bridge) {
5976                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
5977                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5978                                    "bridge %s: %s",
5979                                    bss->brname, strerror(errno));
5980         }
5981
5982         if (bss != drv->first_bss) {
5983                 struct i802_bss *tbss;
5984
5985                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
5986                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
5987                         if (tbss->next == bss) {
5988                                 tbss->next = bss->next;
5989                                 /* Unsubscribe management frames */
5990                                 nl80211_teardown_ap(bss);
5991                                 nl80211_destroy_bss(bss);
5992                                 if (!bss->added_if)
5993                                         i802_set_iface_flags(bss, 0);
5994                                 os_free(bss);
5995                                 bss = NULL;
5996                                 break;
5997                         }
5998                 }
5999                 if (bss)
6000                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6001                                    "BSS %p in the list", __func__, bss);
6002         } else {
6003                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6004                 nl80211_teardown_ap(bss);
6005                 if (!bss->added_if && !drv->first_bss->next)
6006                         wpa_driver_nl80211_del_beacon(drv);
6007                 nl80211_destroy_bss(bss);
6008                 if (!bss->added_if)
6009                         i802_set_iface_flags(bss, 0);
6010                 if (drv->first_bss->next) {
6011                         drv->first_bss = drv->first_bss->next;
6012                         drv->ctx = drv->first_bss->ctx;
6013                         os_free(bss);
6014                 } else {
6015                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6016                 }
6017         }
6018
6019         return 0;
6020 }
6021
6022
6023 static int cookie_handler(struct nl_msg *msg, void *arg)
6024 {
6025         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6026         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6027         u64 *cookie = arg;
6028         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6029                   genlmsg_attrlen(gnlh, 0), NULL);
6030         if (tb[NL80211_ATTR_COOKIE])
6031                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6032         return NL_SKIP;
6033 }
6034
6035
6036 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6037                                   unsigned int freq, unsigned int wait,
6038                                   const u8 *buf, size_t buf_len,
6039                                   u64 *cookie_out, int no_cck, int no_ack,
6040                                   int offchanok)
6041 {
6042         struct wpa_driver_nl80211_data *drv = bss->drv;
6043         struct nl_msg *msg;
6044         u64 cookie;
6045         int ret = -1;
6046
6047         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6048                    "no_ack=%d offchanok=%d",
6049                    freq, wait, no_cck, no_ack, offchanok);
6050         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6051
6052         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6053             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6054             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6055             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6056                            drv->test_use_roc_tx) &&
6057              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6058             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6059             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6060             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6061                 goto fail;
6062
6063         cookie = 0;
6064         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6065         msg = NULL;
6066         if (ret) {
6067                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6068                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6069                            freq, wait);
6070         } else {
6071                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6072                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6073                            (long long unsigned int) cookie);
6074
6075                 if (cookie_out)
6076                         *cookie_out = no_ack ? (u64) -1 : cookie;
6077         }
6078
6079 fail:
6080         nlmsg_free(msg);
6081         return ret;
6082 }
6083
6084
6085 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6086                                           unsigned int freq,
6087                                           unsigned int wait_time,
6088                                           const u8 *dst, const u8 *src,
6089                                           const u8 *bssid,
6090                                           const u8 *data, size_t data_len,
6091                                           int no_cck)
6092 {
6093         struct wpa_driver_nl80211_data *drv = bss->drv;
6094         int ret = -1;
6095         u8 *buf;
6096         struct ieee80211_hdr *hdr;
6097
6098         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6099                    "freq=%u MHz wait=%d ms no_cck=%d)",
6100                    drv->ifindex, freq, wait_time, no_cck);
6101
6102         buf = os_zalloc(24 + data_len);
6103         if (buf == NULL)
6104                 return ret;
6105         os_memcpy(buf + 24, data, data_len);
6106         hdr = (struct ieee80211_hdr *) buf;
6107         hdr->frame_control =
6108                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6109         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6110         os_memcpy(hdr->addr2, src, ETH_ALEN);
6111         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6112
6113         if (is_ap_interface(drv->nlmode) &&
6114             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6115              (int) freq == bss->freq || drv->device_ap_sme ||
6116              !drv->use_monitor))
6117                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6118                                                    0, freq, no_cck, 1,
6119                                                    wait_time);
6120         else
6121                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6122                                              24 + data_len,
6123                                              &drv->send_action_cookie,
6124                                              no_cck, 0, 1);
6125
6126         os_free(buf);
6127         return ret;
6128 }
6129
6130
6131 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6132 {
6133         struct i802_bss *bss = priv;
6134         struct wpa_driver_nl80211_data *drv = bss->drv;
6135         struct nl_msg *msg;
6136         int ret;
6137
6138         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6139                    (long long unsigned int) drv->send_action_cookie);
6140         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6141             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6142                 nlmsg_free(msg);
6143                 return;
6144         }
6145
6146         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6147         if (ret)
6148                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6149                            "(%s)", ret, strerror(-ret));
6150 }
6151
6152
6153 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6154                                                 unsigned int duration)
6155 {
6156         struct i802_bss *bss = priv;
6157         struct wpa_driver_nl80211_data *drv = bss->drv;
6158         struct nl_msg *msg;
6159         int ret;
6160         u64 cookie;
6161
6162         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6163             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6164             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6165                 nlmsg_free(msg);
6166                 return -1;
6167         }
6168
6169         cookie = 0;
6170         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6171         if (ret == 0) {
6172                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6173                            "0x%llx for freq=%u MHz duration=%u",
6174                            (long long unsigned int) cookie, freq, duration);
6175                 drv->remain_on_chan_cookie = cookie;
6176                 drv->pending_remain_on_chan = 1;
6177                 return 0;
6178         }
6179         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6180                    "(freq=%d duration=%u): %d (%s)",
6181                    freq, duration, ret, strerror(-ret));
6182         return -1;
6183 }
6184
6185
6186 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6187 {
6188         struct i802_bss *bss = priv;
6189         struct wpa_driver_nl80211_data *drv = bss->drv;
6190         struct nl_msg *msg;
6191         int ret;
6192
6193         if (!drv->pending_remain_on_chan) {
6194                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6195                            "to cancel");
6196                 return -1;
6197         }
6198
6199         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6200                    "0x%llx",
6201                    (long long unsigned int) drv->remain_on_chan_cookie);
6202
6203         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6204         if (!msg ||
6205             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6206                 nlmsg_free(msg);
6207                 return -1;
6208         }
6209
6210         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6211         if (ret == 0)
6212                 return 0;
6213         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6214                    "%d (%s)", ret, strerror(-ret));
6215         return -1;
6216 }
6217
6218
6219 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6220 {
6221         struct wpa_driver_nl80211_data *drv = bss->drv;
6222
6223         if (!report) {
6224                 if (bss->nl_preq && drv->device_ap_sme &&
6225                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6226                     !bss->static_ap) {
6227                         /*
6228                          * Do not disable Probe Request reporting that was
6229                          * enabled in nl80211_setup_ap().
6230                          */
6231                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6232                                    "Probe Request reporting nl_preq=%p while "
6233                                    "in AP mode", bss->nl_preq);
6234                 } else if (bss->nl_preq) {
6235                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6236                                    "reporting nl_preq=%p", bss->nl_preq);
6237                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6238                 }
6239                 return 0;
6240         }
6241
6242         if (bss->nl_preq) {
6243                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6244                            "already on! nl_preq=%p", bss->nl_preq);
6245                 return 0;
6246         }
6247
6248         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6249         if (bss->nl_preq == NULL)
6250                 return -1;
6251         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6252                    "reporting nl_preq=%p", bss->nl_preq);
6253
6254         if (nl80211_register_frame(bss, bss->nl_preq,
6255                                    (WLAN_FC_TYPE_MGMT << 2) |
6256                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6257                                    NULL, 0) < 0)
6258                 goto out_err;
6259
6260         nl80211_register_eloop_read(&bss->nl_preq,
6261                                     wpa_driver_nl80211_event_receive,
6262                                     bss->nl_cb);
6263
6264         return 0;
6265
6266  out_err:
6267         nl_destroy_handles(&bss->nl_preq);
6268         return -1;
6269 }
6270
6271
6272 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6273                                      int ifindex, int disabled)
6274 {
6275         struct nl_msg *msg;
6276         struct nlattr *bands, *band;
6277         int ret;
6278
6279         wpa_printf(MSG_DEBUG,
6280                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6281                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6282                    "no NL80211_TXRATE_LEGACY constraint");
6283
6284         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6285                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6286         if (!msg)
6287                 return -1;
6288
6289         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6290         if (!bands)
6291                 goto fail;
6292
6293         /*
6294          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6295          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6296          * rates. All 5 GHz rates are left enabled.
6297          */
6298         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6299         if (!band ||
6300             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6301                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6302                 goto fail;
6303         nla_nest_end(msg, band);
6304
6305         nla_nest_end(msg, bands);
6306
6307         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6308         if (ret) {
6309                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6310                            "(%s)", ret, strerror(-ret));
6311         } else
6312                 drv->disabled_11b_rates = disabled;
6313
6314         return ret;
6315
6316 fail:
6317         nlmsg_free(msg);
6318         return -1;
6319 }
6320
6321
6322 static int wpa_driver_nl80211_deinit_ap(void *priv)
6323 {
6324         struct i802_bss *bss = priv;
6325         struct wpa_driver_nl80211_data *drv = bss->drv;
6326         if (!is_ap_interface(drv->nlmode))
6327                 return -1;
6328         wpa_driver_nl80211_del_beacon(drv);
6329         bss->beacon_set = 0;
6330
6331         /*
6332          * If the P2P GO interface was dynamically added, then it is
6333          * possible that the interface change to station is not possible.
6334          */
6335         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6336                 return 0;
6337
6338         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6339 }
6340
6341
6342 static int wpa_driver_nl80211_stop_ap(void *priv)
6343 {
6344         struct i802_bss *bss = priv;
6345         struct wpa_driver_nl80211_data *drv = bss->drv;
6346         if (!is_ap_interface(drv->nlmode))
6347                 return -1;
6348         wpa_driver_nl80211_del_beacon(drv);
6349         bss->beacon_set = 0;
6350         return 0;
6351 }
6352
6353
6354 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6355 {
6356         struct i802_bss *bss = priv;
6357         struct wpa_driver_nl80211_data *drv = bss->drv;
6358         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6359                 return -1;
6360
6361         /*
6362          * If the P2P Client interface was dynamically added, then it is
6363          * possible that the interface change to station is not possible.
6364          */
6365         if (bss->if_dynamic)
6366                 return 0;
6367
6368         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6369 }
6370
6371
6372 static void wpa_driver_nl80211_resume(void *priv)
6373 {
6374         struct i802_bss *bss = priv;
6375
6376         if (i802_set_iface_flags(bss, 1))
6377                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6378 }
6379
6380
6381 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6382 {
6383         struct i802_bss *bss = priv;
6384         struct wpa_driver_nl80211_data *drv = bss->drv;
6385         struct nl_msg *msg;
6386         struct nlattr *cqm;
6387
6388         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6389                    "hysteresis=%d", threshold, hysteresis);
6390
6391         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6392             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6393             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6394             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6395                 nlmsg_free(msg);
6396                 return -1;
6397         }
6398         nla_nest_end(msg, cqm);
6399
6400         return send_and_recv_msgs(drv, msg, NULL, NULL);
6401 }
6402
6403
6404 static int get_channel_width(struct nl_msg *msg, void *arg)
6405 {
6406         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6407         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6408         struct wpa_signal_info *sig_change = arg;
6409
6410         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6411                   genlmsg_attrlen(gnlh, 0), NULL);
6412
6413         sig_change->center_frq1 = -1;
6414         sig_change->center_frq2 = -1;
6415         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6416
6417         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6418                 sig_change->chanwidth = convert2width(
6419                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6420                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6421                         sig_change->center_frq1 =
6422                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6423                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6424                         sig_change->center_frq2 =
6425                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6426         }
6427
6428         return NL_SKIP;
6429 }
6430
6431
6432 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6433                                      struct wpa_signal_info *sig)
6434 {
6435         struct nl_msg *msg;
6436
6437         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6438         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6439 }
6440
6441
6442 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6443 {
6444         struct i802_bss *bss = priv;
6445         struct wpa_driver_nl80211_data *drv = bss->drv;
6446         int res;
6447
6448         os_memset(si, 0, sizeof(*si));
6449         res = nl80211_get_link_signal(drv, si);
6450         if (res != 0)
6451                 return res;
6452
6453         res = nl80211_get_channel_width(drv, si);
6454         if (res != 0)
6455                 return res;
6456
6457         return nl80211_get_link_noise(drv, si);
6458 }
6459
6460
6461 static int wpa_driver_nl80211_shared_freq(void *priv)
6462 {
6463         struct i802_bss *bss = priv;
6464         struct wpa_driver_nl80211_data *drv = bss->drv;
6465         struct wpa_driver_nl80211_data *driver;
6466         int freq = 0;
6467
6468         /*
6469          * If the same PHY is in connected state with some other interface,
6470          * then retrieve the assoc freq.
6471          */
6472         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
6473                    drv->phyname);
6474
6475         dl_list_for_each(driver, &drv->global->interfaces,
6476                          struct wpa_driver_nl80211_data, list) {
6477                 if (drv == driver ||
6478                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
6479                     !driver->associated)
6480                         continue;
6481
6482                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
6483                            MACSTR,
6484                            driver->phyname, driver->first_bss->ifname,
6485                            MAC2STR(driver->first_bss->addr));
6486                 if (is_ap_interface(driver->nlmode))
6487                         freq = driver->first_bss->freq;
6488                 else
6489                         freq = nl80211_get_assoc_freq(driver);
6490                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
6491                            drv->phyname, freq);
6492         }
6493
6494         if (!freq)
6495                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
6496                            "PHY (%s) in associated state", drv->phyname);
6497
6498         return freq;
6499 }
6500
6501
6502 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6503                               int encrypt)
6504 {
6505         struct i802_bss *bss = priv;
6506         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6507                                              0, 0, 0, 0);
6508 }
6509
6510
6511 static int nl80211_set_param(void *priv, const char *param)
6512 {
6513         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6514         if (param == NULL)
6515                 return 0;
6516
6517 #ifdef CONFIG_P2P
6518         if (os_strstr(param, "use_p2p_group_interface=1")) {
6519                 struct i802_bss *bss = priv;
6520                 struct wpa_driver_nl80211_data *drv = bss->drv;
6521
6522                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6523                            "interface");
6524                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6525                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6526         }
6527 #endif /* CONFIG_P2P */
6528
6529         if (os_strstr(param, "use_monitor=1")) {
6530                 struct i802_bss *bss = priv;
6531                 struct wpa_driver_nl80211_data *drv = bss->drv;
6532                 drv->use_monitor = 1;
6533         }
6534
6535         if (os_strstr(param, "force_connect_cmd=1")) {
6536                 struct i802_bss *bss = priv;
6537                 struct wpa_driver_nl80211_data *drv = bss->drv;
6538                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6539                 drv->force_connect_cmd = 1;
6540         }
6541
6542         if (os_strstr(param, "no_offchannel_tx=1")) {
6543                 struct i802_bss *bss = priv;
6544                 struct wpa_driver_nl80211_data *drv = bss->drv;
6545                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6546                 drv->test_use_roc_tx = 1;
6547         }
6548
6549         return 0;
6550 }
6551
6552
6553 static void * nl80211_global_init(void)
6554 {
6555         struct nl80211_global *global;
6556         struct netlink_config *cfg;
6557
6558         global = os_zalloc(sizeof(*global));
6559         if (global == NULL)
6560                 return NULL;
6561         global->ioctl_sock = -1;
6562         dl_list_init(&global->interfaces);
6563         global->if_add_ifindex = -1;
6564
6565         cfg = os_zalloc(sizeof(*cfg));
6566         if (cfg == NULL)
6567                 goto err;
6568
6569         cfg->ctx = global;
6570         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6571         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6572         global->netlink = netlink_init(cfg);
6573         if (global->netlink == NULL) {
6574                 os_free(cfg);
6575                 goto err;
6576         }
6577
6578         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6579                 goto err;
6580
6581         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6582         if (global->ioctl_sock < 0) {
6583                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6584                            strerror(errno));
6585                 goto err;
6586         }
6587
6588         return global;
6589
6590 err:
6591         nl80211_global_deinit(global);
6592         return NULL;
6593 }
6594
6595
6596 static void nl80211_global_deinit(void *priv)
6597 {
6598         struct nl80211_global *global = priv;
6599         if (global == NULL)
6600                 return;
6601         if (!dl_list_empty(&global->interfaces)) {
6602                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6603                            "nl80211_global_deinit",
6604                            dl_list_len(&global->interfaces));
6605         }
6606
6607         if (global->netlink)
6608                 netlink_deinit(global->netlink);
6609
6610         nl_destroy_handles(&global->nl);
6611
6612         if (global->nl_event)
6613                 nl80211_destroy_eloop_handle(&global->nl_event);
6614
6615         nl_cb_put(global->nl_cb);
6616
6617         if (global->ioctl_sock >= 0)
6618                 close(global->ioctl_sock);
6619
6620         os_free(global);
6621 }
6622
6623
6624 static const char * nl80211_get_radio_name(void *priv)
6625 {
6626         struct i802_bss *bss = priv;
6627         struct wpa_driver_nl80211_data *drv = bss->drv;
6628         return drv->phyname;
6629 }
6630
6631
6632 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6633                          const u8 *pmkid)
6634 {
6635         struct nl_msg *msg;
6636
6637         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6638             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6639             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6640                 nlmsg_free(msg);
6641                 return -ENOBUFS;
6642         }
6643
6644         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6645 }
6646
6647
6648 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6649 {
6650         struct i802_bss *bss = priv;
6651         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6652         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6653 }
6654
6655
6656 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6657 {
6658         struct i802_bss *bss = priv;
6659         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6660                    MAC2STR(bssid));
6661         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6662 }
6663
6664
6665 static int nl80211_flush_pmkid(void *priv)
6666 {
6667         struct i802_bss *bss = priv;
6668         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6669         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6670 }
6671
6672
6673 static void clean_survey_results(struct survey_results *survey_results)
6674 {
6675         struct freq_survey *survey, *tmp;
6676
6677         if (dl_list_empty(&survey_results->survey_list))
6678                 return;
6679
6680         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6681                               struct freq_survey, list) {
6682                 dl_list_del(&survey->list);
6683                 os_free(survey);
6684         }
6685 }
6686
6687
6688 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6689                        struct dl_list *survey_list)
6690 {
6691         struct freq_survey *survey;
6692
6693         survey = os_zalloc(sizeof(struct freq_survey));
6694         if  (!survey)
6695                 return;
6696
6697         survey->ifidx = ifidx;
6698         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6699         survey->filled = 0;
6700
6701         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6702                 survey->nf = (int8_t)
6703                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6704                 survey->filled |= SURVEY_HAS_NF;
6705         }
6706
6707         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6708                 survey->channel_time =
6709                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6710                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6711         }
6712
6713         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6714                 survey->channel_time_busy =
6715                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6716                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6717         }
6718
6719         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6720                 survey->channel_time_rx =
6721                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6722                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6723         }
6724
6725         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6726                 survey->channel_time_tx =
6727                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6728                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6729         }
6730
6731         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)",
6732                    survey->freq,
6733                    survey->nf,
6734                    (unsigned long int) survey->channel_time,
6735                    (unsigned long int) survey->channel_time_busy,
6736                    (unsigned long int) survey->channel_time_tx,
6737                    (unsigned long int) survey->channel_time_rx,
6738                    survey->filled);
6739
6740         dl_list_add_tail(survey_list, &survey->list);
6741 }
6742
6743
6744 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6745                            unsigned int freq_filter)
6746 {
6747         if (!freq_filter)
6748                 return 1;
6749
6750         return freq_filter == surveyed_freq;
6751 }
6752
6753
6754 static int survey_handler(struct nl_msg *msg, void *arg)
6755 {
6756         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6757         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6758         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6759         struct survey_results *survey_results;
6760         u32 surveyed_freq = 0;
6761         u32 ifidx;
6762
6763         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6764                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6765                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6766         };
6767
6768         survey_results = (struct survey_results *) arg;
6769
6770         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6771                   genlmsg_attrlen(gnlh, 0), NULL);
6772
6773         if (!tb[NL80211_ATTR_IFINDEX])
6774                 return NL_SKIP;
6775
6776         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6777
6778         if (!tb[NL80211_ATTR_SURVEY_INFO])
6779                 return NL_SKIP;
6780
6781         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6782                              tb[NL80211_ATTR_SURVEY_INFO],
6783                              survey_policy))
6784                 return NL_SKIP;
6785
6786         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6787                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6788                 return NL_SKIP;
6789         }
6790
6791         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6792
6793         if (!check_survey_ok(sinfo, surveyed_freq,
6794                              survey_results->freq_filter))
6795                 return NL_SKIP;
6796
6797         if (survey_results->freq_filter &&
6798             survey_results->freq_filter != surveyed_freq) {
6799                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6800                            surveyed_freq);
6801                 return NL_SKIP;
6802         }
6803
6804         add_survey(sinfo, ifidx, &survey_results->survey_list);
6805
6806         return NL_SKIP;
6807 }
6808
6809
6810 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6811 {
6812         struct i802_bss *bss = priv;
6813         struct wpa_driver_nl80211_data *drv = bss->drv;
6814         struct nl_msg *msg;
6815         int err;
6816         union wpa_event_data data;
6817         struct survey_results *survey_results;
6818
6819         os_memset(&data, 0, sizeof(data));
6820         survey_results = &data.survey_results;
6821
6822         dl_list_init(&survey_results->survey_list);
6823
6824         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6825         if (!msg)
6826                 return -ENOBUFS;
6827
6828         if (freq)
6829                 data.survey_results.freq_filter = freq;
6830
6831         do {
6832                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6833                 err = send_and_recv_msgs(drv, msg, survey_handler,
6834                                          survey_results);
6835         } while (err > 0);
6836
6837         if (err)
6838                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6839         else
6840                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6841
6842         clean_survey_results(survey_results);
6843         return err;
6844 }
6845
6846
6847 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
6848                                    const u8 *kck, size_t kck_len,
6849                                    const u8 *replay_ctr)
6850 {
6851         struct i802_bss *bss = priv;
6852         struct wpa_driver_nl80211_data *drv = bss->drv;
6853         struct nlattr *replay_nested;
6854         struct nl_msg *msg;
6855         int ret;
6856
6857         if (!drv->set_rekey_offload)
6858                 return;
6859
6860         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6861         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6862             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6863             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
6864             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
6865             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6866                     replay_ctr)) {
6867                 nl80211_nlmsg_clear(msg);
6868                 nlmsg_free(msg);
6869                 return;
6870         }
6871
6872         nla_nest_end(msg, replay_nested);
6873
6874         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6875         if (ret == -EOPNOTSUPP) {
6876                 wpa_printf(MSG_DEBUG,
6877                            "nl80211: Driver does not support rekey offload");
6878                 drv->set_rekey_offload = 0;
6879         }
6880 }
6881
6882
6883 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6884                                     const u8 *addr, int qos)
6885 {
6886         /* send data frame to poll STA and check whether
6887          * this frame is ACKed */
6888         struct {
6889                 struct ieee80211_hdr hdr;
6890                 u16 qos_ctl;
6891         } STRUCT_PACKED nulldata;
6892         size_t size;
6893
6894         /* Send data frame to poll STA and check whether this frame is ACKed */
6895
6896         os_memset(&nulldata, 0, sizeof(nulldata));
6897
6898         if (qos) {
6899                 nulldata.hdr.frame_control =
6900                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6901                                      WLAN_FC_STYPE_QOS_NULL);
6902                 size = sizeof(nulldata);
6903         } else {
6904                 nulldata.hdr.frame_control =
6905                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6906                                      WLAN_FC_STYPE_NULLFUNC);
6907                 size = sizeof(struct ieee80211_hdr);
6908         }
6909
6910         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6911         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6912         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6913         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6914
6915         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6916                                          0, 0) < 0)
6917                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6918                            "send poll frame");
6919 }
6920
6921 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6922                                 int qos)
6923 {
6924         struct i802_bss *bss = priv;
6925         struct wpa_driver_nl80211_data *drv = bss->drv;
6926         struct nl_msg *msg;
6927         int ret;
6928
6929         if (!drv->poll_command_supported) {
6930                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6931                 return;
6932         }
6933
6934         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6935             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6936                 nlmsg_free(msg);
6937                 return;
6938         }
6939
6940         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6941         if (ret < 0) {
6942                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
6943                            MACSTR " failed: ret=%d (%s)",
6944                            MAC2STR(addr), ret, strerror(-ret));
6945         }
6946 }
6947
6948
6949 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
6950 {
6951         struct nl_msg *msg;
6952
6953         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
6954             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
6955                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
6956                 nlmsg_free(msg);
6957                 return -ENOBUFS;
6958         }
6959         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6960 }
6961
6962
6963 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
6964                                      int ctwindow)
6965 {
6966         struct i802_bss *bss = priv;
6967
6968         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
6969                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
6970
6971         if (opp_ps != -1 || ctwindow != -1) {
6972 #ifdef ANDROID_P2P
6973                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
6974 #else /* ANDROID_P2P */
6975                 return -1; /* Not yet supported */
6976 #endif /* ANDROID_P2P */
6977         }
6978
6979         if (legacy_ps == -1)
6980                 return 0;
6981         if (legacy_ps != 0 && legacy_ps != 1)
6982                 return -1; /* Not yet supported */
6983
6984         return nl80211_set_power_save(bss, legacy_ps);
6985 }
6986
6987
6988 static int nl80211_start_radar_detection(void *priv,
6989                                          struct hostapd_freq_params *freq)
6990 {
6991         struct i802_bss *bss = priv;
6992         struct wpa_driver_nl80211_data *drv = bss->drv;
6993         struct nl_msg *msg;
6994         int ret;
6995
6996         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)",
6997                    freq->freq, freq->ht_enabled, freq->vht_enabled,
6998                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
6999
7000         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7001                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7002                            "detection");
7003                 return -1;
7004         }
7005
7006         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7007             nl80211_put_freq_params(msg, freq) < 0) {
7008                 nlmsg_free(msg);
7009                 return -1;
7010         }
7011
7012         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7013         if (ret == 0)
7014                 return 0;
7015         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7016                    "%d (%s)", ret, strerror(-ret));
7017         return -1;
7018 }
7019
7020 #ifdef CONFIG_TDLS
7021
7022 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7023                                   u8 dialog_token, u16 status_code,
7024                                   u32 peer_capab, int initiator, const u8 *buf,
7025                                   size_t len)
7026 {
7027         struct i802_bss *bss = priv;
7028         struct wpa_driver_nl80211_data *drv = bss->drv;
7029         struct nl_msg *msg;
7030
7031         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7032                 return -EOPNOTSUPP;
7033
7034         if (!dst)
7035                 return -EINVAL;
7036
7037         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7038             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7039             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7040             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7041             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7042                 goto fail;
7043         if (peer_capab) {
7044                 /*
7045                  * The internal enum tdls_peer_capability definition is
7046                  * currently identical with the nl80211 enum
7047                  * nl80211_tdls_peer_capability, so no conversion is needed
7048                  * here.
7049                  */
7050                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7051                                 peer_capab))
7052                         goto fail;
7053         }
7054         if ((initiator &&
7055              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7056             nla_put(msg, NL80211_ATTR_IE, len, buf))
7057                 goto fail;
7058
7059         return send_and_recv_msgs(drv, msg, NULL, NULL);
7060
7061 fail:
7062         nlmsg_free(msg);
7063         return -ENOBUFS;
7064 }
7065
7066
7067 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7068 {
7069         struct i802_bss *bss = priv;
7070         struct wpa_driver_nl80211_data *drv = bss->drv;
7071         struct nl_msg *msg;
7072         enum nl80211_tdls_operation nl80211_oper;
7073
7074         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7075                 return -EOPNOTSUPP;
7076
7077         switch (oper) {
7078         case TDLS_DISCOVERY_REQ:
7079                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7080                 break;
7081         case TDLS_SETUP:
7082                 nl80211_oper = NL80211_TDLS_SETUP;
7083                 break;
7084         case TDLS_TEARDOWN:
7085                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7086                 break;
7087         case TDLS_ENABLE_LINK:
7088                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7089                 break;
7090         case TDLS_DISABLE_LINK:
7091                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7092                 break;
7093         case TDLS_ENABLE:
7094                 return 0;
7095         case TDLS_DISABLE:
7096                 return 0;
7097         default:
7098                 return -EINVAL;
7099         }
7100
7101         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7102             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7103             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7104                 nlmsg_free(msg);
7105                 return -ENOBUFS;
7106         }
7107
7108         return send_and_recv_msgs(drv, msg, NULL, NULL);
7109 }
7110
7111
7112 static int
7113 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7114                                    const struct hostapd_freq_params *params)
7115 {
7116         struct i802_bss *bss = priv;
7117         struct wpa_driver_nl80211_data *drv = bss->drv;
7118         struct nl_msg *msg;
7119         int ret = -ENOBUFS;
7120
7121         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7122             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7123                 return -EOPNOTSUPP;
7124
7125         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7126                    " oper_class=%u freq=%u",
7127                    MAC2STR(addr), oper_class, params->freq);
7128         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7129         if (!msg ||
7130             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7131             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7132             (ret = nl80211_put_freq_params(msg, params))) {
7133                 nlmsg_free(msg);
7134                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7135                 return ret;
7136         }
7137
7138         return send_and_recv_msgs(drv, msg, NULL, NULL);
7139 }
7140
7141
7142 static int
7143 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7144 {
7145         struct i802_bss *bss = priv;
7146         struct wpa_driver_nl80211_data *drv = bss->drv;
7147         struct nl_msg *msg;
7148
7149         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7150             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7151                 return -EOPNOTSUPP;
7152
7153         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7154                    MAC2STR(addr));
7155         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7156         if (!msg ||
7157             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7158                 nlmsg_free(msg);
7159                 wpa_printf(MSG_DEBUG,
7160                            "nl80211: Could not build TDLS cancel chan switch");
7161                 return -ENOBUFS;
7162         }
7163
7164         return send_and_recv_msgs(drv, msg, NULL, NULL);
7165 }
7166
7167 #endif /* CONFIG TDLS */
7168
7169
7170 static int driver_nl80211_set_key(const char *ifname, void *priv,
7171                                   enum wpa_alg alg, const u8 *addr,
7172                                   int key_idx, int set_tx,
7173                                   const u8 *seq, size_t seq_len,
7174                                   const u8 *key, size_t key_len)
7175 {
7176         struct i802_bss *bss = priv;
7177         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7178                                           set_tx, seq, seq_len, key, key_len);
7179 }
7180
7181
7182 static int driver_nl80211_scan2(void *priv,
7183                                 struct wpa_driver_scan_params *params)
7184 {
7185         struct i802_bss *bss = priv;
7186         return wpa_driver_nl80211_scan(bss, params);
7187 }
7188
7189
7190 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7191                                          int reason_code)
7192 {
7193         struct i802_bss *bss = priv;
7194         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7195 }
7196
7197
7198 static int driver_nl80211_authenticate(void *priv,
7199                                        struct wpa_driver_auth_params *params)
7200 {
7201         struct i802_bss *bss = priv;
7202         return wpa_driver_nl80211_authenticate(bss, params);
7203 }
7204
7205
7206 static void driver_nl80211_deinit(void *priv)
7207 {
7208         struct i802_bss *bss = priv;
7209         wpa_driver_nl80211_deinit(bss);
7210 }
7211
7212
7213 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7214                                     const char *ifname)
7215 {
7216         struct i802_bss *bss = priv;
7217         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7218 }
7219
7220
7221 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7222                                     size_t data_len, int noack)
7223 {
7224         struct i802_bss *bss = priv;
7225         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7226                                             0, 0, 0, 0);
7227 }
7228
7229
7230 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7231 {
7232         struct i802_bss *bss = priv;
7233         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7234 }
7235
7236
7237 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7238                                        const char *ifname, int vlan_id)
7239 {
7240         struct i802_bss *bss = priv;
7241         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7242 }
7243
7244
7245 static int driver_nl80211_read_sta_data(void *priv,
7246                                         struct hostap_sta_driver_data *data,
7247                                         const u8 *addr)
7248 {
7249         struct i802_bss *bss = priv;
7250         return i802_read_sta_data(bss, data, addr);
7251 }
7252
7253
7254 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7255                                       unsigned int wait_time,
7256                                       const u8 *dst, const u8 *src,
7257                                       const u8 *bssid,
7258                                       const u8 *data, size_t data_len,
7259                                       int no_cck)
7260 {
7261         struct i802_bss *bss = priv;
7262         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7263                                               bssid, data, data_len, no_cck);
7264 }
7265
7266
7267 static int driver_nl80211_probe_req_report(void *priv, int report)
7268 {
7269         struct i802_bss *bss = priv;
7270         return wpa_driver_nl80211_probe_req_report(bss, report);
7271 }
7272
7273
7274 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7275                                             const u8 *ies, size_t ies_len)
7276 {
7277         int ret;
7278         struct nl_msg *msg;
7279         struct i802_bss *bss = priv;
7280         struct wpa_driver_nl80211_data *drv = bss->drv;
7281         u16 mdid = WPA_GET_LE16(md);
7282
7283         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7284         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7285             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7286             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7287                 nlmsg_free(msg);
7288                 return -ENOBUFS;
7289         }
7290
7291         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7292         if (ret) {
7293                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7294                            "err=%d (%s)", ret, strerror(-ret));
7295         }
7296
7297         return ret;
7298 }
7299
7300
7301 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7302 {
7303         struct i802_bss *bss = priv;
7304         struct wpa_driver_nl80211_data *drv = bss->drv;
7305
7306         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7307                 return NULL;
7308
7309         return bss->addr;
7310 }
7311
7312
7313 static const char * scan_state_str(enum scan_states scan_state)
7314 {
7315         switch (scan_state) {
7316         case NO_SCAN:
7317                 return "NO_SCAN";
7318         case SCAN_REQUESTED:
7319                 return "SCAN_REQUESTED";
7320         case SCAN_STARTED:
7321                 return "SCAN_STARTED";
7322         case SCAN_COMPLETED:
7323                 return "SCAN_COMPLETED";
7324         case SCAN_ABORTED:
7325                 return "SCAN_ABORTED";
7326         case SCHED_SCAN_STARTED:
7327                 return "SCHED_SCAN_STARTED";
7328         case SCHED_SCAN_STOPPED:
7329                 return "SCHED_SCAN_STOPPED";
7330         case SCHED_SCAN_RESULTS:
7331                 return "SCHED_SCAN_RESULTS";
7332         }
7333
7334         return "??";
7335 }
7336
7337
7338 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7339 {
7340         struct i802_bss *bss = priv;
7341         struct wpa_driver_nl80211_data *drv = bss->drv;
7342         int res;
7343         char *pos, *end;
7344
7345         pos = buf;
7346         end = buf + buflen;
7347
7348         res = os_snprintf(pos, end - pos,
7349                           "ifindex=%d\n"
7350                           "ifname=%s\n"
7351                           "brname=%s\n"
7352                           "addr=" MACSTR "\n"
7353                           "freq=%d\n"
7354                           "%s%s%s%s%s",
7355                           bss->ifindex,
7356                           bss->ifname,
7357                           bss->brname,
7358                           MAC2STR(bss->addr),
7359                           bss->freq,
7360                           bss->beacon_set ? "beacon_set=1\n" : "",
7361                           bss->added_if_into_bridge ?
7362                           "added_if_into_bridge=1\n" : "",
7363                           bss->added_bridge ? "added_bridge=1\n" : "",
7364                           bss->in_deinit ? "in_deinit=1\n" : "",
7365                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7366         if (os_snprintf_error(end - pos, res))
7367                 return pos - buf;
7368         pos += res;
7369
7370         if (bss->wdev_id_set) {
7371                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7372                                   (unsigned long long) bss->wdev_id);
7373                 if (os_snprintf_error(end - pos, res))
7374                         return pos - buf;
7375                 pos += res;
7376         }
7377
7378         res = os_snprintf(pos, end - pos,
7379                           "phyname=%s\n"
7380                           "perm_addr=" MACSTR "\n"
7381                           "drv_ifindex=%d\n"
7382                           "operstate=%d\n"
7383                           "scan_state=%s\n"
7384                           "auth_bssid=" MACSTR "\n"
7385                           "auth_attempt_bssid=" MACSTR "\n"
7386                           "bssid=" MACSTR "\n"
7387                           "prev_bssid=" MACSTR "\n"
7388                           "associated=%d\n"
7389                           "assoc_freq=%u\n"
7390                           "monitor_sock=%d\n"
7391                           "monitor_ifidx=%d\n"
7392                           "monitor_refcount=%d\n"
7393                           "last_mgmt_freq=%u\n"
7394                           "eapol_tx_sock=%d\n"
7395                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7396                           drv->phyname,
7397                           MAC2STR(drv->perm_addr),
7398                           drv->ifindex,
7399                           drv->operstate,
7400                           scan_state_str(drv->scan_state),
7401                           MAC2STR(drv->auth_bssid),
7402                           MAC2STR(drv->auth_attempt_bssid),
7403                           MAC2STR(drv->bssid),
7404                           MAC2STR(drv->prev_bssid),
7405                           drv->associated,
7406                           drv->assoc_freq,
7407                           drv->monitor_sock,
7408                           drv->monitor_ifidx,
7409                           drv->monitor_refcount,
7410                           drv->last_mgmt_freq,
7411                           drv->eapol_tx_sock,
7412                           drv->ignore_if_down_event ?
7413                           "ignore_if_down_event=1\n" : "",
7414                           drv->scan_complete_events ?
7415                           "scan_complete_events=1\n" : "",
7416                           drv->disabled_11b_rates ?
7417                           "disabled_11b_rates=1\n" : "",
7418                           drv->pending_remain_on_chan ?
7419                           "pending_remain_on_chan=1\n" : "",
7420                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7421                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7422                           drv->poll_command_supported ?
7423                           "poll_command_supported=1\n" : "",
7424                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7425                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7426                           drv->retry_auth ? "retry_auth=1\n" : "",
7427                           drv->use_monitor ? "use_monitor=1\n" : "",
7428                           drv->ignore_next_local_disconnect ?
7429                           "ignore_next_local_disconnect=1\n" : "",
7430                           drv->ignore_next_local_deauth ?
7431                           "ignore_next_local_deauth=1\n" : "");
7432         if (os_snprintf_error(end - pos, res))
7433                 return pos - buf;
7434         pos += res;
7435
7436         if (drv->has_capability) {
7437                 res = os_snprintf(pos, end - pos,
7438                                   "capa.key_mgmt=0x%x\n"
7439                                   "capa.enc=0x%x\n"
7440                                   "capa.auth=0x%x\n"
7441                                   "capa.flags=0x%llx\n"
7442                                   "capa.rrm_flags=0x%x\n"
7443                                   "capa.max_scan_ssids=%d\n"
7444                                   "capa.max_sched_scan_ssids=%d\n"
7445                                   "capa.sched_scan_supported=%d\n"
7446                                   "capa.max_match_sets=%d\n"
7447                                   "capa.max_remain_on_chan=%u\n"
7448                                   "capa.max_stations=%u\n"
7449                                   "capa.probe_resp_offloads=0x%x\n"
7450                                   "capa.max_acl_mac_addrs=%u\n"
7451                                   "capa.num_multichan_concurrent=%u\n"
7452                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7453                                   "capa.mac_addr_rand_scan_supported=%d\n",
7454                                   drv->capa.key_mgmt,
7455                                   drv->capa.enc,
7456                                   drv->capa.auth,
7457                                   (unsigned long long) drv->capa.flags,
7458                                   drv->capa.rrm_flags,
7459                                   drv->capa.max_scan_ssids,
7460                                   drv->capa.max_sched_scan_ssids,
7461                                   drv->capa.sched_scan_supported,
7462                                   drv->capa.max_match_sets,
7463                                   drv->capa.max_remain_on_chan,
7464                                   drv->capa.max_stations,
7465                                   drv->capa.probe_resp_offloads,
7466                                   drv->capa.max_acl_mac_addrs,
7467                                   drv->capa.num_multichan_concurrent,
7468                                   drv->capa.mac_addr_rand_sched_scan_supported,
7469                                   drv->capa.mac_addr_rand_scan_supported);
7470                 if (os_snprintf_error(end - pos, res))
7471                         return pos - buf;
7472                 pos += res;
7473         }
7474
7475         return pos - buf;
7476 }
7477
7478
7479 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7480 {
7481         if ((settings->head &&
7482              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7483                      settings->head_len, settings->head)) ||
7484             (settings->tail &&
7485              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7486                      settings->tail_len, settings->tail)) ||
7487             (settings->beacon_ies &&
7488              nla_put(msg, NL80211_ATTR_IE,
7489                      settings->beacon_ies_len, settings->beacon_ies)) ||
7490             (settings->proberesp_ies &&
7491              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7492                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7493             (settings->assocresp_ies &&
7494              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7495                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7496             (settings->probe_resp &&
7497              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7498                      settings->probe_resp_len, settings->probe_resp)))
7499                 return -ENOBUFS;
7500
7501         return 0;
7502 }
7503
7504
7505 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7506 {
7507         struct nl_msg *msg;
7508         struct i802_bss *bss = priv;
7509         struct wpa_driver_nl80211_data *drv = bss->drv;
7510         struct nlattr *beacon_csa;
7511         int ret = -ENOBUFS;
7512
7513         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7514                    settings->cs_count, settings->block_tx,
7515                    settings->freq_params.freq, settings->freq_params.bandwidth,
7516                    settings->freq_params.center_freq1,
7517                    settings->freq_params.center_freq2);
7518
7519         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7520                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7521                 return -EOPNOTSUPP;
7522         }
7523
7524         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7525             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7526                 return -EOPNOTSUPP;
7527
7528         /* check settings validity */
7529         if (!settings->beacon_csa.tail ||
7530             ((settings->beacon_csa.tail_len <=
7531               settings->counter_offset_beacon) ||
7532              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7533               settings->cs_count)))
7534                 return -EINVAL;
7535
7536         if (settings->beacon_csa.probe_resp &&
7537             ((settings->beacon_csa.probe_resp_len <=
7538               settings->counter_offset_presp) ||
7539              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7540               settings->cs_count)))
7541                 return -EINVAL;
7542
7543         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7544             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7545                         settings->cs_count) ||
7546             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7547             (settings->block_tx &&
7548              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7549                 goto error;
7550
7551         /* beacon_after params */
7552         ret = set_beacon_data(msg, &settings->beacon_after);
7553         if (ret)
7554                 goto error;
7555
7556         /* beacon_csa params */
7557         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7558         if (!beacon_csa)
7559                 goto fail;
7560
7561         ret = set_beacon_data(msg, &settings->beacon_csa);
7562         if (ret)
7563                 goto error;
7564
7565         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7566                         settings->counter_offset_beacon) ||
7567             (settings->beacon_csa.probe_resp &&
7568              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7569                          settings->counter_offset_presp)))
7570                 goto fail;
7571
7572         nla_nest_end(msg, beacon_csa);
7573         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7574         if (ret) {
7575                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7576                            ret, strerror(-ret));
7577         }
7578         return ret;
7579
7580 fail:
7581         ret = -ENOBUFS;
7582 error:
7583         nlmsg_free(msg);
7584         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7585         return ret;
7586 }
7587
7588
7589 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7590                           u8 user_priority, u16 admitted_time)
7591 {
7592         struct i802_bss *bss = priv;
7593         struct wpa_driver_nl80211_data *drv = bss->drv;
7594         struct nl_msg *msg;
7595         int ret;
7596
7597         wpa_printf(MSG_DEBUG,
7598                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7599                    tsid, admitted_time, user_priority);
7600
7601         if (!is_sta_interface(drv->nlmode))
7602                 return -ENOTSUP;
7603
7604         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7605         if (!msg ||
7606             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7607             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7608             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7609             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7610                 nlmsg_free(msg);
7611                 return -ENOBUFS;
7612         }
7613
7614         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7615         if (ret)
7616                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7617                            ret, strerror(-ret));
7618         return ret;
7619 }
7620
7621
7622 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7623 {
7624         struct i802_bss *bss = priv;
7625         struct wpa_driver_nl80211_data *drv = bss->drv;
7626         struct nl_msg *msg;
7627         int ret;
7628
7629         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7630
7631         if (!is_sta_interface(drv->nlmode))
7632                 return -ENOTSUP;
7633
7634         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7635             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7636             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7637                 nlmsg_free(msg);
7638                 return -ENOBUFS;
7639         }
7640
7641         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7642         if (ret)
7643                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7644                            ret, strerror(-ret));
7645         return ret;
7646 }
7647
7648
7649 #ifdef CONFIG_TESTING_OPTIONS
7650 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7651 {
7652         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7653         struct wpabuf *buf = arg;
7654
7655         if (!buf)
7656                 return NL_SKIP;
7657
7658         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7659                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7660                 return NL_SKIP;
7661         }
7662
7663         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7664                         genlmsg_attrlen(gnlh, 0));
7665
7666         return NL_SKIP;
7667 }
7668 #endif /* CONFIG_TESTING_OPTIONS */
7669
7670
7671 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7672 {
7673         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7674         struct nlattr *nl_vendor_reply, *nl;
7675         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7676         struct wpabuf *buf = arg;
7677         int rem;
7678
7679         if (!buf)
7680                 return NL_SKIP;
7681
7682         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7683                   genlmsg_attrlen(gnlh, 0), NULL);
7684         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7685
7686         if (!nl_vendor_reply)
7687                 return NL_SKIP;
7688
7689         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7690                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7691                 return NL_SKIP;
7692         }
7693
7694         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7695                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7696         }
7697
7698         return NL_SKIP;
7699 }
7700
7701
7702 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7703                               unsigned int subcmd, const u8 *data,
7704                               size_t data_len, struct wpabuf *buf)
7705 {
7706         struct i802_bss *bss = priv;
7707         struct wpa_driver_nl80211_data *drv = bss->drv;
7708         struct nl_msg *msg;
7709         int ret;
7710
7711 #ifdef CONFIG_TESTING_OPTIONS
7712         if (vendor_id == 0xffffffff) {
7713                 msg = nlmsg_alloc();
7714                 if (!msg)
7715                         return -ENOMEM;
7716
7717                 nl80211_cmd(drv, msg, 0, subcmd);
7718                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7719                     0)
7720                         goto fail;
7721                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7722                 if (ret)
7723                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7724                                    ret);
7725                 return ret;
7726         }
7727 #endif /* CONFIG_TESTING_OPTIONS */
7728
7729         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7730             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7731             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7732             (data &&
7733              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7734                 goto fail;
7735
7736         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7737         if (ret)
7738                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7739                            ret);
7740         return ret;
7741
7742 fail:
7743         nlmsg_free(msg);
7744         return -ENOBUFS;
7745 }
7746
7747
7748 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7749                                u8 qos_map_set_len)
7750 {
7751         struct i802_bss *bss = priv;
7752         struct wpa_driver_nl80211_data *drv = bss->drv;
7753         struct nl_msg *msg;
7754         int ret;
7755
7756         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7757                     qos_map_set, qos_map_set_len);
7758
7759         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7760             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7761                 nlmsg_free(msg);
7762                 return -ENOBUFS;
7763         }
7764
7765         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7766         if (ret)
7767                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7768
7769         return ret;
7770 }
7771
7772
7773 static int nl80211_set_wowlan(void *priv,
7774                               const struct wowlan_triggers *triggers)
7775 {
7776         struct i802_bss *bss = priv;
7777         struct wpa_driver_nl80211_data *drv = bss->drv;
7778         struct nl_msg *msg;
7779         struct nlattr *wowlan_triggers;
7780         int ret;
7781
7782         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7783
7784         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
7785             !(wowlan_triggers = nla_nest_start(msg,
7786                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7787             (triggers->any &&
7788              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7789             (triggers->disconnect &&
7790              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7791             (triggers->magic_pkt &&
7792              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7793             (triggers->gtk_rekey_failure &&
7794              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7795             (triggers->eap_identity_req &&
7796              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7797             (triggers->four_way_handshake &&
7798              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7799             (triggers->rfkill_release &&
7800              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7801                 nlmsg_free(msg);
7802                 return -ENOBUFS;
7803         }
7804
7805         nla_nest_end(msg, wowlan_triggers);
7806
7807         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7808         if (ret)
7809                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7810
7811         return ret;
7812 }
7813
7814
7815 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7816 {
7817         struct i802_bss *bss = priv;
7818         struct wpa_driver_nl80211_data *drv = bss->drv;
7819         struct nl_msg *msg;
7820         struct nlattr *params;
7821
7822         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7823
7824         if (!drv->roaming_vendor_cmd_avail) {
7825                 wpa_printf(MSG_DEBUG,
7826                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7827                 return -1;
7828         }
7829
7830         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7831             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7832             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7833                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7834             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7835             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7836                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7837                         QCA_ROAMING_NOT_ALLOWED) ||
7838             (bssid &&
7839              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7840                 nlmsg_free(msg);
7841                 return -1;
7842         }
7843         nla_nest_end(msg, params);
7844
7845         return send_and_recv_msgs(drv, msg, NULL, NULL);
7846 }
7847
7848
7849 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7850 {
7851         struct i802_bss *bss = priv;
7852         struct wpa_driver_nl80211_data *drv = bss->drv;
7853         int new_addr = addr != NULL;
7854
7855         if (!addr)
7856                 addr = drv->perm_addr;
7857
7858         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7859                 return -1;
7860
7861         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7862         {
7863                 wpa_printf(MSG_DEBUG,
7864                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7865                            bss->ifname, MAC2STR(addr));
7866                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7867                                           1) < 0) {
7868                         wpa_printf(MSG_DEBUG,
7869                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7870                 }
7871                 return -1;
7872         }
7873
7874         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7875                    bss->ifname, MAC2STR(addr));
7876         drv->addr_changed = new_addr;
7877         os_memcpy(bss->addr, addr, ETH_ALEN);
7878
7879         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7880         {
7881                 wpa_printf(MSG_DEBUG,
7882                            "nl80211: Could not restore interface UP after set_mac_addr");
7883         }
7884
7885         return 0;
7886 }
7887
7888
7889 #ifdef CONFIG_MESH
7890
7891 static int wpa_driver_nl80211_init_mesh(void *priv)
7892 {
7893         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7894                 wpa_printf(MSG_INFO,
7895                            "nl80211: Failed to set interface into mesh mode");
7896                 return -1;
7897         }
7898         return 0;
7899 }
7900
7901
7902 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
7903                                size_t mesh_id_len)
7904 {
7905         if (mesh_id) {
7906                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
7907                                   mesh_id, mesh_id_len);
7908                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
7909         }
7910
7911         return 0;
7912 }
7913
7914
7915 static int nl80211_join_mesh(struct i802_bss *bss,
7916                              struct wpa_driver_mesh_join_params *params)
7917 {
7918         struct wpa_driver_nl80211_data *drv = bss->drv;
7919         struct nl_msg *msg;
7920         struct nlattr *container;
7921         int ret = -1;
7922
7923         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7924         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7925         if (!msg ||
7926             nl80211_put_freq_params(msg, &params->freq) ||
7927             nl80211_put_basic_rates(msg, params->basic_rates) ||
7928             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
7929             nl80211_put_beacon_int(msg, params->beacon_int))
7930                 goto fail;
7931
7932         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7933
7934         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7935         if (!container)
7936                 goto fail;
7937
7938         if (params->ies) {
7939                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7940                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7941                             params->ies))
7942                         goto fail;
7943         }
7944         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
7945         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
7946                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
7947                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
7948                         goto fail;
7949         }
7950         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
7951             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
7952                 goto fail;
7953         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
7954             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
7955                 goto fail;
7956         nla_nest_end(msg, container);
7957
7958         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
7959         if (!container)
7960                 goto fail;
7961
7962         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
7963             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
7964                 goto fail;
7965         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
7966             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7967                         params->max_peer_links))
7968                 goto fail;
7969
7970         /*
7971          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
7972          * the timer could disconnect stations even in that case.
7973          */
7974         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7975                         params->conf.peer_link_timeout)) {
7976                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
7977                 goto fail;
7978         }
7979
7980         nla_nest_end(msg, container);
7981
7982         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7983         msg = NULL;
7984         if (ret) {
7985                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
7986                            ret, strerror(-ret));
7987                 goto fail;
7988         }
7989         ret = 0;
7990         bss->freq = params->freq.freq;
7991         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
7992
7993 fail:
7994         nlmsg_free(msg);
7995         return ret;
7996 }
7997
7998
7999 static int
8000 wpa_driver_nl80211_join_mesh(void *priv,
8001                              struct wpa_driver_mesh_join_params *params)
8002 {
8003         struct i802_bss *bss = priv;
8004         int ret, timeout;
8005
8006         timeout = params->conf.peer_link_timeout;
8007
8008         /* Disable kernel inactivity timer */
8009         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8010                 params->conf.peer_link_timeout = 0;
8011
8012         ret = nl80211_join_mesh(bss, params);
8013         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8014                 wpa_printf(MSG_DEBUG,
8015                            "nl80211: Mesh join retry for peer_link_timeout");
8016                 /*
8017                  * Old kernel does not support setting
8018                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8019                  * into future from peer_link_timeout.
8020                  */
8021                 params->conf.peer_link_timeout = timeout + 60;
8022                 ret = nl80211_join_mesh(priv, params);
8023         }
8024
8025         params->conf.peer_link_timeout = timeout;
8026         return ret;
8027 }
8028
8029
8030 static int wpa_driver_nl80211_leave_mesh(void *priv)
8031 {
8032         struct i802_bss *bss = priv;
8033         struct wpa_driver_nl80211_data *drv = bss->drv;
8034         struct nl_msg *msg;
8035         int ret;
8036
8037         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8038         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8039         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8040         if (ret) {
8041                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8042                            ret, strerror(-ret));
8043         } else {
8044                 wpa_printf(MSG_DEBUG,
8045                            "nl80211: mesh leave request send successfully");
8046         }
8047
8048         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8049                                         NL80211_IFTYPE_STATION)) {
8050                 wpa_printf(MSG_INFO,
8051                            "nl80211: Failed to set interface into station mode");
8052         }
8053         return ret;
8054 }
8055
8056 #endif /* CONFIG_MESH */
8057
8058
8059 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8060                                       const u8 *ipaddr, int prefixlen,
8061                                       const u8 *addr)
8062 {
8063 #ifdef CONFIG_LIBNL3_ROUTE
8064         struct i802_bss *bss = priv;
8065         struct wpa_driver_nl80211_data *drv = bss->drv;
8066         struct rtnl_neigh *rn;
8067         struct nl_addr *nl_ipaddr = NULL;
8068         struct nl_addr *nl_lladdr = NULL;
8069         int family, addrsize;
8070         int res;
8071
8072         if (!ipaddr || prefixlen == 0 || !addr)
8073                 return -EINVAL;
8074
8075         if (bss->br_ifindex == 0) {
8076                 wpa_printf(MSG_DEBUG,
8077                            "nl80211: bridge must be set before adding an ip neigh to it");
8078                 return -1;
8079         }
8080
8081         if (!drv->rtnl_sk) {
8082                 wpa_printf(MSG_DEBUG,
8083                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8084                 return -1;
8085         }
8086
8087         if (version == 4) {
8088                 family = AF_INET;
8089                 addrsize = 4;
8090         } else if (version == 6) {
8091                 family = AF_INET6;
8092                 addrsize = 16;
8093         } else {
8094                 return -EINVAL;
8095         }
8096
8097         rn = rtnl_neigh_alloc();
8098         if (rn == NULL)
8099                 return -ENOMEM;
8100
8101         /* set the destination ip address for neigh */
8102         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8103         if (nl_ipaddr == NULL) {
8104                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8105                 res = -ENOMEM;
8106                 goto errout;
8107         }
8108         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8109         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8110         if (res) {
8111                 wpa_printf(MSG_DEBUG,
8112                            "nl80211: neigh set destination addr failed");
8113                 goto errout;
8114         }
8115
8116         /* set the corresponding lladdr for neigh */
8117         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8118         if (nl_lladdr == NULL) {
8119                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8120                 res = -ENOMEM;
8121                 goto errout;
8122         }
8123         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8124
8125         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8126         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8127
8128         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8129         if (res) {
8130                 wpa_printf(MSG_DEBUG,
8131                            "nl80211: Adding bridge ip neigh failed: %s",
8132                            strerror(errno));
8133         }
8134 errout:
8135         if (nl_lladdr)
8136                 nl_addr_put(nl_lladdr);
8137         if (nl_ipaddr)
8138                 nl_addr_put(nl_ipaddr);
8139         if (rn)
8140                 rtnl_neigh_put(rn);
8141         return res;
8142 #else /* CONFIG_LIBNL3_ROUTE */
8143         return -1;
8144 #endif /* CONFIG_LIBNL3_ROUTE */
8145 }
8146
8147
8148 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8149                                          const u8 *ipaddr)
8150 {
8151 #ifdef CONFIG_LIBNL3_ROUTE
8152         struct i802_bss *bss = priv;
8153         struct wpa_driver_nl80211_data *drv = bss->drv;
8154         struct rtnl_neigh *rn;
8155         struct nl_addr *nl_ipaddr;
8156         int family, addrsize;
8157         int res;
8158
8159         if (!ipaddr)
8160                 return -EINVAL;
8161
8162         if (version == 4) {
8163                 family = AF_INET;
8164                 addrsize = 4;
8165         } else if (version == 6) {
8166                 family = AF_INET6;
8167                 addrsize = 16;
8168         } else {
8169                 return -EINVAL;
8170         }
8171
8172         if (bss->br_ifindex == 0) {
8173                 wpa_printf(MSG_DEBUG,
8174                            "nl80211: bridge must be set to delete an ip neigh");
8175                 return -1;
8176         }
8177
8178         if (!drv->rtnl_sk) {
8179                 wpa_printf(MSG_DEBUG,
8180                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8181                 return -1;
8182         }
8183
8184         rn = rtnl_neigh_alloc();
8185         if (rn == NULL)
8186                 return -ENOMEM;
8187
8188         /* set the destination ip address for neigh */
8189         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8190         if (nl_ipaddr == NULL) {
8191                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8192                 res = -ENOMEM;
8193                 goto errout;
8194         }
8195         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8196         if (res) {
8197                 wpa_printf(MSG_DEBUG,
8198                            "nl80211: neigh set destination addr failed");
8199                 goto errout;
8200         }
8201
8202         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8203
8204         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8205         if (res) {
8206                 wpa_printf(MSG_DEBUG,
8207                            "nl80211: Deleting bridge ip neigh failed: %s",
8208                            strerror(errno));
8209         }
8210 errout:
8211         if (nl_ipaddr)
8212                 nl_addr_put(nl_ipaddr);
8213         if (rn)
8214                 rtnl_neigh_put(rn);
8215         return res;
8216 #else /* CONFIG_LIBNL3_ROUTE */
8217         return -1;
8218 #endif /* CONFIG_LIBNL3_ROUTE */
8219 }
8220
8221
8222 static int linux_write_system_file(const char *path, unsigned int val)
8223 {
8224         char buf[50];
8225         int fd, len;
8226
8227         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8228         if (os_snprintf_error(sizeof(buf), len))
8229                 return -1;
8230
8231         fd = open(path, O_WRONLY);
8232         if (fd < 0)
8233                 return -1;
8234
8235         if (write(fd, buf, len) < 0) {
8236                 wpa_printf(MSG_DEBUG,
8237                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8238                            path, val);
8239                 close(fd);
8240                 return -1;
8241         }
8242         close(fd);
8243
8244         return 0;
8245 }
8246
8247
8248 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8249 {
8250         switch (attr) {
8251         case DRV_BR_PORT_ATTR_PROXYARP:
8252                 return "proxyarp";
8253         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8254                 return "hairpin_mode";
8255         }
8256
8257         return NULL;
8258 }
8259
8260
8261 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8262                                        unsigned int val)
8263 {
8264         struct i802_bss *bss = priv;
8265         char path[128];
8266         const char *attr_txt;
8267
8268         attr_txt = drv_br_port_attr_str(attr);
8269         if (attr_txt == NULL)
8270                 return -EINVAL;
8271
8272         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8273                     bss->ifname, attr_txt);
8274
8275         if (linux_write_system_file(path, val))
8276                 return -1;
8277
8278         return 0;
8279 }
8280
8281
8282 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8283 {
8284         switch (param) {
8285         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8286                 return "arp_accept";
8287         }
8288
8289         return NULL;
8290 }
8291
8292
8293 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8294                                        unsigned int val)
8295 {
8296         struct i802_bss *bss = priv;
8297         char path[128];
8298         const char *param_txt;
8299         int ip_version = 4;
8300
8301         param_txt = drv_br_net_param_str(param);
8302         if (param_txt == NULL)
8303                 return -EINVAL;
8304
8305         switch (param) {
8306                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8307                         ip_version = 4;
8308                         break;
8309                 default:
8310                         return -EINVAL;
8311         }
8312
8313         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8314                     ip_version, bss->brname, param_txt);
8315
8316         if (linux_write_system_file(path, val))
8317                 return -1;
8318
8319         return 0;
8320 }
8321
8322
8323 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8324 {
8325         switch (hw_mode) {
8326         case HOSTAPD_MODE_IEEE80211B:
8327                 return QCA_ACS_MODE_IEEE80211B;
8328         case HOSTAPD_MODE_IEEE80211G:
8329                 return QCA_ACS_MODE_IEEE80211G;
8330         case HOSTAPD_MODE_IEEE80211A:
8331                 return QCA_ACS_MODE_IEEE80211A;
8332         case HOSTAPD_MODE_IEEE80211AD:
8333                 return QCA_ACS_MODE_IEEE80211AD;
8334         default:
8335                 return -1;
8336         }
8337 }
8338
8339
8340 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8341 {
8342         struct i802_bss *bss = priv;
8343         struct wpa_driver_nl80211_data *drv = bss->drv;
8344         struct nl_msg *msg;
8345         struct nlattr *data;
8346         int ret;
8347         int mode;
8348
8349         mode = hw_mode_to_qca_acs(params->hw_mode);
8350         if (mode < 0)
8351                 return -1;
8352
8353         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8354             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8355             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8356                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8357             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8358             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8359             (params->ht_enabled &&
8360              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8361             (params->ht40_enabled &&
8362              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
8363                 nlmsg_free(msg);
8364                 return -ENOBUFS;
8365         }
8366         nla_nest_end(msg, data);
8367
8368         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8369         if (ret) {
8370                 wpa_printf(MSG_DEBUG,
8371                            "nl80211: Failed to invoke driver ACS function: %s",
8372                            strerror(errno));
8373         }
8374         return ret;
8375 }
8376
8377
8378 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8379         .name = "nl80211",
8380         .desc = "Linux nl80211/cfg80211",
8381         .get_bssid = wpa_driver_nl80211_get_bssid,
8382         .get_ssid = wpa_driver_nl80211_get_ssid,
8383         .set_key = driver_nl80211_set_key,
8384         .scan2 = driver_nl80211_scan2,
8385         .sched_scan = wpa_driver_nl80211_sched_scan,
8386         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8387         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8388         .deauthenticate = driver_nl80211_deauthenticate,
8389         .authenticate = driver_nl80211_authenticate,
8390         .associate = wpa_driver_nl80211_associate,
8391         .global_init = nl80211_global_init,
8392         .global_deinit = nl80211_global_deinit,
8393         .init2 = wpa_driver_nl80211_init,
8394         .deinit = driver_nl80211_deinit,
8395         .get_capa = wpa_driver_nl80211_get_capa,
8396         .set_operstate = wpa_driver_nl80211_set_operstate,
8397         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8398         .set_country = wpa_driver_nl80211_set_country,
8399         .get_country = wpa_driver_nl80211_get_country,
8400         .set_ap = wpa_driver_nl80211_set_ap,
8401         .set_acl = wpa_driver_nl80211_set_acl,
8402         .if_add = wpa_driver_nl80211_if_add,
8403         .if_remove = driver_nl80211_if_remove,
8404         .send_mlme = driver_nl80211_send_mlme,
8405         .get_hw_feature_data = nl80211_get_hw_feature_data,
8406         .sta_add = wpa_driver_nl80211_sta_add,
8407         .sta_remove = driver_nl80211_sta_remove,
8408         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8409         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8410         .hapd_init = i802_init,
8411         .hapd_deinit = i802_deinit,
8412         .set_wds_sta = i802_set_wds_sta,
8413         .get_seqnum = i802_get_seqnum,
8414         .flush = i802_flush,
8415         .get_inact_sec = i802_get_inact_sec,
8416         .sta_clear_stats = i802_sta_clear_stats,
8417         .set_rts = i802_set_rts,
8418         .set_frag = i802_set_frag,
8419         .set_tx_queue_params = i802_set_tx_queue_params,
8420         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8421         .sta_deauth = i802_sta_deauth,
8422         .sta_disassoc = i802_sta_disassoc,
8423         .read_sta_data = driver_nl80211_read_sta_data,
8424         .set_freq = i802_set_freq,
8425         .send_action = driver_nl80211_send_action,
8426         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8427         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8428         .cancel_remain_on_channel =
8429         wpa_driver_nl80211_cancel_remain_on_channel,
8430         .probe_req_report = driver_nl80211_probe_req_report,
8431         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8432         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8433         .resume = wpa_driver_nl80211_resume,
8434         .signal_monitor = nl80211_signal_monitor,
8435         .signal_poll = nl80211_signal_poll,
8436         .send_frame = nl80211_send_frame,
8437         .shared_freq = wpa_driver_nl80211_shared_freq,
8438         .set_param = nl80211_set_param,
8439         .get_radio_name = nl80211_get_radio_name,
8440         .add_pmkid = nl80211_add_pmkid,
8441         .remove_pmkid = nl80211_remove_pmkid,
8442         .flush_pmkid = nl80211_flush_pmkid,
8443         .set_rekey_info = nl80211_set_rekey_info,
8444         .poll_client = nl80211_poll_client,
8445         .set_p2p_powersave = nl80211_set_p2p_powersave,
8446         .start_dfs_cac = nl80211_start_radar_detection,
8447         .stop_ap = wpa_driver_nl80211_stop_ap,
8448 #ifdef CONFIG_TDLS
8449         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8450         .tdls_oper = nl80211_tdls_oper,
8451         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8452         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8453 #endif /* CONFIG_TDLS */
8454         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8455         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8456         .get_survey = wpa_driver_nl80211_get_survey,
8457         .status = wpa_driver_nl80211_status,
8458         .switch_channel = nl80211_switch_channel,
8459 #ifdef ANDROID_P2P
8460         .set_noa = wpa_driver_set_p2p_noa,
8461         .get_noa = wpa_driver_get_p2p_noa,
8462         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8463 #endif /* ANDROID_P2P */
8464 #ifdef ANDROID
8465         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8466 #endif /* ANDROID */
8467         .vendor_cmd = nl80211_vendor_cmd,
8468         .set_qos_map = nl80211_set_qos_map,
8469         .set_wowlan = nl80211_set_wowlan,
8470         .roaming = nl80211_roaming,
8471         .set_mac_addr = nl80211_set_mac_addr,
8472 #ifdef CONFIG_MESH
8473         .init_mesh = wpa_driver_nl80211_init_mesh,
8474         .join_mesh = wpa_driver_nl80211_join_mesh,
8475         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8476 #endif /* CONFIG_MESH */
8477         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8478         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8479         .br_port_set_attr = wpa_driver_br_port_set_attr,
8480         .br_set_net_param = wpa_driver_br_set_net_param,
8481         .add_tx_ts = nl80211_add_ts,
8482         .del_tx_ts = nl80211_del_ts,
8483         .do_acs = wpa_driver_do_acs,
8484 };