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                 namebuf[0] = '\0';
 956                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 957                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 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 (%s/%s)",
 964                            namebuf, ifname);
 965                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 966                         wpa_printf(MSG_DEBUG,
 967                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 968                                    drv->first_bss->ifname);
 969                 } else if (drv->ignore_if_down_event) {
 970                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 971                                    "event generated by mode change");
 972                         drv->ignore_if_down_event = 0;
 973                 } else {
 974                         drv->if_disabled = 1;
 975                         wpa_supplicant_event(drv->ctx,
 976                                              EVENT_INTERFACE_DISABLED, NULL);
 977
 978                         /*
 979                          * Try to get drv again, since it may be removed as
 980                          * part of the EVENT_INTERFACE_DISABLED handling for
 981                          * dynamic interfaces
 982                          */
 983                         drv = nl80211_find_drv(global, ifi->ifi_index,
 984                                                buf, len);
 985                         if (!drv)
 986                                 return;
 987                 }
 988         }
 989
 990         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 991                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 992                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
 993                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 994                                    "event since interface %s is down",
 995                                    namebuf);
 996                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 998                                    "event since interface %s does not exist",
 999                                    drv->first_bss->ifname);
1000                 } else if (drv->if_removed) {
1001                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1002                                    "event since interface %s is marked "
1003                                    "removed", drv->first_bss->ifname);
1004                 } else {
1005                         struct i802_bss *bss;
1006                         u8 addr[ETH_ALEN];
1007
1008                         /* Re-read MAC address as it may have changed */
1009                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1010                         if (bss &&
1011                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1012                                                bss->ifname, addr) < 0) {
1013                                 wpa_printf(MSG_DEBUG,
1014                                            "nl80211: %s: failed to re-read MAC address",
1015                                            bss->ifname);
1016                         } else if (bss &&
1017                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1018                                 wpa_printf(MSG_DEBUG,
1019                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1020                                            MACSTR " to " MACSTR,
1021                                            ifi->ifi_index, bss->ifname,
1022                                            MAC2STR(bss->addr),
1023                                            MAC2STR(addr));
1024                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1025                         }
1026
1027                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1028                         drv->if_disabled = 0;
1029                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1030                                              NULL);
1031                 }
1032         }
1033
1034         /*
1035          * Some drivers send the association event before the operup event--in
1036          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1037          * fails. This will hit us when wpa_supplicant does not need to do
1038          * IEEE 802.1X authentication
1039          */
1040         if (drv->operstate == 1 &&
1041             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1042             !(ifi->ifi_flags & IFF_RUNNING)) {
1043                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1044                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1045                                        -1, IF_OPER_UP);
1046         }
1047
1048         if (ifname[0])
1049                 wpa_driver_nl80211_event_newlink(drv, ifname);
1050
1051         if (ifi->ifi_family == AF_BRIDGE && brid) {
1052                 struct i802_bss *bss;
1053
1054                 /* device has been added to bridge */
1055                 if (!if_indextoname(brid, namebuf)) {
1056                         wpa_printf(MSG_DEBUG,
1057                                    "nl80211: Could not find bridge ifname for ifindex %u",
1058                                    brid);
1059                         return;
1060                 }
1061                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1062                            brid, namebuf);
1063                 add_ifidx(drv, brid);
1064
1065                 for (bss = drv->first_bss; bss; bss = bss->next) {
1066                         if (os_strcmp(ifname, bss->ifname) == 0) {
1067                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1068                                 break;
1069                         }
1070                 }
1071         }
1072 }
1073
1074
1075 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1076                                                  struct ifinfomsg *ifi,
1077                                                  u8 *buf, size_t len)
1078 {
1079         struct nl80211_global *global = ctx;
1080         struct wpa_driver_nl80211_data *drv;
1081         int attrlen;
1082         struct rtattr *attr;
1083         u32 brid = 0;
1084         char ifname[IFNAMSIZ + 1];
1085         char extra[100], *pos, *end;
1086
1087         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1088         if (!drv) {
1089                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1090                            ifi->ifi_index);
1091                 return;
1092         }
1093
1094         extra[0] = '\0';
1095         pos = extra;
1096         end = pos + sizeof(extra);
1097         ifname[0] = '\0';
1098
1099         attrlen = len;
1100         attr = (struct rtattr *) buf;
1101         while (RTA_OK(attr, attrlen)) {
1102                 switch (attr->rta_type) {
1103                 case IFLA_IFNAME:
1104                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1105                                 break;
1106                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1107                         ifname[RTA_PAYLOAD(attr)] = '\0';
1108                         break;
1109                 case IFLA_MASTER:
1110                         brid = nla_get_u32((struct nlattr *) attr);
1111                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1112                         break;
1113                 case IFLA_OPERSTATE:
1114                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1115                                            nla_get_u32((struct nlattr *) attr));
1116                         break;
1117                 case IFLA_LINKMODE:
1118                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1119                                            nla_get_u32((struct nlattr *) attr));
1120                         break;
1121                 }
1122                 attr = RTA_NEXT(attr, attrlen);
1123         }
1124         extra[sizeof(extra) - 1] = '\0';
1125
1126         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1127                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1128                    ifi->ifi_flags,
1129                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1130                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1131                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1132                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1133
1134         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1135                 wpa_driver_nl80211_event_dellink(drv, ifname);
1136
1137         if (ifi->ifi_family == AF_BRIDGE && brid) {
1138                 /* device has been removed from bridge */
1139                 char namebuf[IFNAMSIZ];
1140
1141                 if (!if_indextoname(brid, namebuf)) {
1142                         wpa_printf(MSG_DEBUG,
1143                                    "nl80211: Could not find bridge ifname for ifindex %u",
1144                                    brid);
1145                 } else {
1146                         wpa_printf(MSG_DEBUG,
1147                                    "nl80211: Remove ifindex %u for bridge %s",
1148                                    brid, namebuf);
1149                 }
1150                 del_ifidx(drv, brid);
1151         }
1152 }
1153
1154
1155 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1156 {
1157         struct nl_msg *msg;
1158         int ret;
1159         struct nl80211_bss_info_arg arg;
1160
1161         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1162         os_memset(&arg, 0, sizeof(arg));
1163         arg.drv = drv;
1164         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1165         if (ret == 0) {
1166                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1167                         arg.ibss_freq : arg.assoc_freq;
1168                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1169                            "associated BSS from scan results: %u MHz", freq);
1170                 if (freq)
1171                         drv->assoc_freq = freq;
1172                 return drv->assoc_freq;
1173         }
1174         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1175                    "(%s)", ret, strerror(-ret));
1176         return drv->assoc_freq;
1177 }
1178
1179
1180 static int get_link_signal(struct nl_msg *msg, void *arg)
1181 {
1182         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1183         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1184         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1185         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1186                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1187                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1188         };
1189         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1190         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1191                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1192                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1193                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1194                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1195         };
1196         struct wpa_signal_info *sig_change = arg;
1197
1198         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1199                   genlmsg_attrlen(gnlh, 0), NULL);
1200         if (!tb[NL80211_ATTR_STA_INFO] ||
1201             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1202                              tb[NL80211_ATTR_STA_INFO], policy))
1203                 return NL_SKIP;
1204         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1205                 return NL_SKIP;
1206
1207         sig_change->current_signal =
1208                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1209
1210         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1211                 sig_change->avg_signal =
1212                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1213         else
1214                 sig_change->avg_signal = 0;
1215
1216         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1217                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1218                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1219                                      rate_policy)) {
1220                         sig_change->current_txrate = 0;
1221                 } else {
1222                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1223                                 sig_change->current_txrate =
1224                                         nla_get_u16(rinfo[
1225                                              NL80211_RATE_INFO_BITRATE]) * 100;
1226                         }
1227                 }
1228         }
1229
1230         return NL_SKIP;
1231 }
1232
1233
1234 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1235                             struct wpa_signal_info *sig)
1236 {
1237         struct nl_msg *msg;
1238
1239         sig->current_signal = -9999;
1240         sig->current_txrate = 0;
1241
1242         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1243             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1244                 nlmsg_free(msg);
1245                 return -ENOBUFS;
1246         }
1247
1248         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1249 }
1250
1251
1252 static int get_link_noise(struct nl_msg *msg, void *arg)
1253 {
1254         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1255         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1256         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1257         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1258                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1259                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1260         };
1261         struct wpa_signal_info *sig_change = arg;
1262
1263         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1264                   genlmsg_attrlen(gnlh, 0), NULL);
1265
1266         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1267                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1268                 return NL_SKIP;
1269         }
1270
1271         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1272                              tb[NL80211_ATTR_SURVEY_INFO],
1273                              survey_policy)) {
1274                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1275                            "attributes!");
1276                 return NL_SKIP;
1277         }
1278
1279         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1280                 return NL_SKIP;
1281
1282         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1283             sig_change->frequency)
1284                 return NL_SKIP;
1285
1286         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1287                 return NL_SKIP;
1288
1289         sig_change->current_noise =
1290                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1291
1292         return NL_SKIP;
1293 }
1294
1295
1296 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1297                            struct wpa_signal_info *sig_change)
1298 {
1299         struct nl_msg *msg;
1300
1301         sig_change->current_noise = 9999;
1302         sig_change->frequency = drv->assoc_freq;
1303
1304         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1305         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1306 }
1307
1308
1309 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1310                                              void *handle)
1311 {
1312         struct nl_cb *cb = eloop_ctx;
1313         int res;
1314
1315         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1316
1317         res = nl_recvmsgs(handle, cb);
1318         if (res < 0) {
1319                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1320                            __func__, res);
1321         }
1322 }
1323
1324
1325 /**
1326  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1327  * @priv: driver_nl80211 private data
1328  * @alpha2_arg: country to which to switch to
1329  * Returns: 0 on success, -1 on failure
1330  *
1331  * This asks nl80211 to set the regulatory domain for given
1332  * country ISO / IEC alpha2.
1333  */
1334 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1335 {
1336         struct i802_bss *bss = priv;
1337         struct wpa_driver_nl80211_data *drv = bss->drv;
1338         char alpha2[3];
1339         struct nl_msg *msg;
1340
1341         msg = nlmsg_alloc();
1342         if (!msg)
1343                 return -ENOMEM;
1344
1345         alpha2[0] = alpha2_arg[0];
1346         alpha2[1] = alpha2_arg[1];
1347         alpha2[2] = '\0';
1348
1349         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1350             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1351                 nlmsg_free(msg);
1352                 return -EINVAL;
1353         }
1354         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1355                 return -EINVAL;
1356         return 0;
1357 }
1358
1359
1360 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1361 {
1362         char *alpha2 = arg;
1363         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1364         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1365
1366         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1367                   genlmsg_attrlen(gnlh, 0), NULL);
1368         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1369                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1370                 return NL_SKIP;
1371         }
1372         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1373         return NL_SKIP;
1374 }
1375
1376
1377 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1378 {
1379         struct i802_bss *bss = priv;
1380         struct wpa_driver_nl80211_data *drv = bss->drv;
1381         struct nl_msg *msg;
1382         int ret;
1383
1384         msg = nlmsg_alloc();
1385         if (!msg)
1386                 return -ENOMEM;
1387
1388         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1389         alpha2[0] = '\0';
1390         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1391         if (!alpha2[0])
1392                 ret = -1;
1393
1394         return ret;
1395 }
1396
1397
1398 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1399 {
1400         int ret;
1401
1402         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1403         if (global->nl_cb == NULL) {
1404                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1405                            "callbacks");
1406                 return -1;
1407         }
1408
1409         global->nl = nl_create_handle(global->nl_cb, "nl");
1410         if (global->nl == NULL)
1411                 goto err;
1412
1413         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1414         if (global->nl80211_id < 0) {
1415                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1416                            "found");
1417                 goto err;
1418         }
1419
1420         global->nl_event = nl_create_handle(global->nl_cb, "event");
1421         if (global->nl_event == NULL)
1422                 goto err;
1423
1424         ret = nl_get_multicast_id(global, "nl80211", "scan");
1425         if (ret >= 0)
1426                 ret = nl_socket_add_membership(global->nl_event, ret);
1427         if (ret < 0) {
1428                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1429                            "membership for scan events: %d (%s)",
1430                            ret, strerror(-ret));
1431                 goto err;
1432         }
1433
1434         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1435         if (ret >= 0)
1436                 ret = nl_socket_add_membership(global->nl_event, ret);
1437         if (ret < 0) {
1438                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1439                            "membership for mlme events: %d (%s)",
1440                            ret, strerror(-ret));
1441                 goto err;
1442         }
1443
1444         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1445         if (ret >= 0)
1446                 ret = nl_socket_add_membership(global->nl_event, ret);
1447         if (ret < 0) {
1448                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1449                            "membership for regulatory events: %d (%s)",
1450                            ret, strerror(-ret));
1451                 /* Continue without regulatory events */
1452         }
1453
1454         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1455         if (ret >= 0)
1456                 ret = nl_socket_add_membership(global->nl_event, ret);
1457         if (ret < 0) {
1458                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1459                            "membership for vendor events: %d (%s)",
1460                            ret, strerror(-ret));
1461                 /* Continue without vendor events */
1462         }
1463
1464         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1465                   no_seq_check, NULL);
1466         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1467                   process_global_event, global);
1468
1469         nl80211_register_eloop_read(&global->nl_event,
1470                                     wpa_driver_nl80211_event_receive,
1471                                     global->nl_cb);
1472
1473         return 0;
1474
1475 err:
1476         nl_destroy_handles(&global->nl_event);
1477         nl_destroy_handles(&global->nl);
1478         nl_cb_put(global->nl_cb);
1479         global->nl_cb = NULL;
1480         return -1;
1481 }
1482
1483
1484 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1485 {
1486         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1487         /*
1488          * This may be for any interface; use ifdown event to disable
1489          * interface.
1490          */
1491 }
1492
1493
1494 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1495 {
1496         struct wpa_driver_nl80211_data *drv = ctx;
1497         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1498         if (i802_set_iface_flags(drv->first_bss, 1)) {
1499                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1500                            "after rfkill unblock");
1501                 return;
1502         }
1503         /* rtnetlink ifup handler will report interface as enabled */
1504 }
1505
1506
1507 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1508                                                       void *eloop_ctx,
1509                                                       void *handle)
1510 {
1511         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1512         u8 data[2048];
1513         struct msghdr msg;
1514         struct iovec entry;
1515         u8 control[512];
1516         struct cmsghdr *cmsg;
1517         int res, found_ee = 0, found_wifi = 0, acked = 0;
1518         union wpa_event_data event;
1519
1520         memset(&msg, 0, sizeof(msg));
1521         msg.msg_iov = &entry;
1522         msg.msg_iovlen = 1;
1523         entry.iov_base = data;
1524         entry.iov_len = sizeof(data);
1525         msg.msg_control = &control;
1526         msg.msg_controllen = sizeof(control);
1527
1528         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1529         /* if error or not fitting 802.3 header, return */
1530         if (res < 14)
1531                 return;
1532
1533         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1534         {
1535                 if (cmsg->cmsg_level == SOL_SOCKET &&
1536                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1537                         int *ack;
1538
1539                         found_wifi = 1;
1540                         ack = (void *)CMSG_DATA(cmsg);
1541                         acked = *ack;
1542                 }
1543
1544                 if (cmsg->cmsg_level == SOL_PACKET &&
1545                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1546                         struct sock_extended_err *err =
1547                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1548
1549                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1550                                 found_ee = 1;
1551                 }
1552         }
1553
1554         if (!found_ee || !found_wifi)
1555                 return;
1556
1557         memset(&event, 0, sizeof(event));
1558         event.eapol_tx_status.dst = data;
1559         event.eapol_tx_status.data = data + 14;
1560         event.eapol_tx_status.data_len = res - 14;
1561         event.eapol_tx_status.ack = acked;
1562         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1563 }
1564
1565
1566 static int nl80211_init_bss(struct i802_bss *bss)
1567 {
1568         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1569         if (!bss->nl_cb)
1570                 return -1;
1571
1572         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1573                   no_seq_check, NULL);
1574         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1575                   process_bss_event, bss);
1576
1577         return 0;
1578 }
1579
1580
1581 static void nl80211_destroy_bss(struct i802_bss *bss)
1582 {
1583         nl_cb_put(bss->nl_cb);
1584         bss->nl_cb = NULL;
1585 }
1586
1587
1588 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1589                                           void *global_priv, int hostapd,
1590                                           const u8 *set_addr,
1591                                           const char *driver_params)
1592 {
1593         struct wpa_driver_nl80211_data *drv;
1594         struct rfkill_config *rcfg;
1595         struct i802_bss *bss;
1596
1597         if (global_priv == NULL)
1598                 return NULL;
1599         drv = os_zalloc(sizeof(*drv));
1600         if (drv == NULL)
1601                 return NULL;
1602         drv->global = global_priv;
1603         drv->ctx = ctx;
1604         drv->hostapd = !!hostapd;
1605         drv->eapol_sock = -1;
1606
1607         /*
1608          * There is no driver capability flag for this, so assume it is
1609          * supported and disable this on first attempt to use if the driver
1610          * rejects the command due to missing support.
1611          */
1612         drv->set_rekey_offload = 1;
1613
1614         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1615         drv->if_indices = drv->default_if_indices;
1616
1617         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1618         if (!drv->first_bss) {
1619                 os_free(drv);
1620                 return NULL;
1621         }
1622         bss = drv->first_bss;
1623         bss->drv = drv;
1624         bss->ctx = ctx;
1625
1626         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1627         drv->monitor_ifidx = -1;
1628         drv->monitor_sock = -1;
1629         drv->eapol_tx_sock = -1;
1630         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1631
1632         if (nl80211_init_bss(bss))
1633                 goto failed;
1634
1635         rcfg = os_zalloc(sizeof(*rcfg));
1636         if (rcfg == NULL)
1637                 goto failed;
1638         rcfg->ctx = drv;
1639         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1640         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1641         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1642         drv->rfkill = rfkill_init(rcfg);
1643         if (drv->rfkill == NULL) {
1644                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1645                 os_free(rcfg);
1646         }
1647
1648         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1649                 drv->start_iface_up = 1;
1650
1651         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1652                 goto failed;
1653
1654         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1655         if (drv->eapol_tx_sock < 0)
1656                 goto failed;
1657
1658         if (drv->data_tx_status) {
1659                 int enabled = 1;
1660
1661                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1662                                &enabled, sizeof(enabled)) < 0) {
1663                         wpa_printf(MSG_DEBUG,
1664                                 "nl80211: wifi status sockopt failed\n");
1665                         drv->data_tx_status = 0;
1666                         if (!drv->use_monitor)
1667                                 drv->capa.flags &=
1668                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1669                 } else {
1670                         eloop_register_read_sock(drv->eapol_tx_sock,
1671                                 wpa_driver_nl80211_handle_eapol_tx_status,
1672                                 drv, NULL);
1673                 }
1674         }
1675
1676         if (drv->global) {
1677                 dl_list_add(&drv->global->interfaces, &drv->list);
1678                 drv->in_interface_list = 1;
1679         }
1680
1681         return bss;
1682
1683 failed:
1684         wpa_driver_nl80211_deinit(bss);
1685         return NULL;
1686 }
1687
1688
1689 /**
1690  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1691  * @ctx: context to be used when calling wpa_supplicant functions,
1692  * e.g., wpa_supplicant_event()
1693  * @ifname: interface name, e.g., wlan0
1694  * @global_priv: private driver global data from global_init()
1695  * Returns: Pointer to private data, %NULL on failure
1696  */
1697 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1698                                       void *global_priv)
1699 {
1700         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1701                                            NULL);
1702 }
1703
1704
1705 static int nl80211_register_frame(struct i802_bss *bss,
1706                                   struct nl_handle *nl_handle,
1707                                   u16 type, const u8 *match, size_t match_len)
1708 {
1709         struct wpa_driver_nl80211_data *drv = bss->drv;
1710         struct nl_msg *msg;
1711         int ret;
1712         char buf[30];
1713
1714         buf[0] = '\0';
1715         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1716         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1717                    type, fc2str(type), nl_handle, buf);
1718
1719         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1720             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1721             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1722                 nlmsg_free(msg);
1723                 return -1;
1724         }
1725
1726         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1727         if (ret) {
1728                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1729                            "failed (type=%u): ret=%d (%s)",
1730                            type, ret, strerror(-ret));
1731                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1732                             match, match_len);
1733         }
1734         return ret;
1735 }
1736
1737
1738 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1739 {
1740         if (bss->nl_mgmt) {
1741                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1742                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1743                 return -1;
1744         }
1745
1746         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1747         if (bss->nl_mgmt == NULL)
1748                 return -1;
1749
1750         return 0;
1751 }
1752
1753
1754 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1755 {
1756         nl80211_register_eloop_read(&bss->nl_mgmt,
1757                                     wpa_driver_nl80211_event_receive,
1758                                     bss->nl_cb);
1759 }
1760
1761
1762 static int nl80211_register_action_frame(struct i802_bss *bss,
1763                                          const u8 *match, size_t match_len)
1764 {
1765         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1766         return nl80211_register_frame(bss, bss->nl_mgmt,
1767                                       type, match, match_len);
1768 }
1769
1770
1771 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1772 {
1773         struct wpa_driver_nl80211_data *drv = bss->drv;
1774         int ret = 0;
1775
1776         if (nl80211_alloc_mgmt_handle(bss))
1777                 return -1;
1778         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1779                    "handle %p", bss->nl_mgmt);
1780
1781         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1782                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1783
1784                 /* register for any AUTH message */
1785                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1786         }
1787
1788 #ifdef CONFIG_INTERWORKING
1789         /* QoS Map Configure */
1790         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1791                 ret = -1;
1792 #endif /* CONFIG_INTERWORKING */
1793 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1794         /* GAS Initial Request */
1795         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1796                 ret = -1;
1797         /* GAS Initial Response */
1798         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1799                 ret = -1;
1800         /* GAS Comeback Request */
1801         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1802                 ret = -1;
1803         /* GAS Comeback Response */
1804         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1805                 ret = -1;
1806         /* Protected GAS Initial Request */
1807         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1808                 ret = -1;
1809         /* Protected GAS Initial Response */
1810         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1811                 ret = -1;
1812         /* Protected GAS Comeback Request */
1813         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1814                 ret = -1;
1815         /* Protected GAS Comeback Response */
1816         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1817                 ret = -1;
1818 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1819 #ifdef CONFIG_P2P
1820         /* P2P Public Action */
1821         if (nl80211_register_action_frame(bss,
1822                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1823                                           6) < 0)
1824                 ret = -1;
1825         /* P2P Action */
1826         if (nl80211_register_action_frame(bss,
1827                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1828                                           5) < 0)
1829                 ret = -1;
1830 #endif /* CONFIG_P2P */
1831 #ifdef CONFIG_IEEE80211W
1832         /* SA Query Response */
1833         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1834                 ret = -1;
1835 #endif /* CONFIG_IEEE80211W */
1836 #ifdef CONFIG_TDLS
1837         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1838                 /* TDLS Discovery Response */
1839                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1840                     0)
1841                         ret = -1;
1842         }
1843 #endif /* CONFIG_TDLS */
1844
1845         /* FT Action frames */
1846         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1847                 ret = -1;
1848         else
1849                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1850                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1851
1852         /* WNM - BSS Transition Management Request */
1853         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1854                 ret = -1;
1855         /* WNM-Sleep Mode Response */
1856         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1857                 ret = -1;
1858
1859 #ifdef CONFIG_HS20
1860         /* WNM-Notification */
1861         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1862                 ret = -1;
1863 #endif /* CONFIG_HS20 */
1864
1865         /* WMM-AC ADDTS Response */
1866         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1867                 ret = -1;
1868
1869         /* WMM-AC DELTS */
1870         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1871                 ret = -1;
1872
1873         /* Radio Measurement - Neighbor Report Response */
1874         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1875                 ret = -1;
1876
1877         /* Radio Measurement - Link Measurement Request */
1878         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1879             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1880                 ret = -1;
1881
1882         nl80211_mgmt_handle_register_eloop(bss);
1883
1884         return ret;
1885 }
1886
1887
1888 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1889 {
1890         int ret = 0;
1891
1892         if (nl80211_alloc_mgmt_handle(bss))
1893                 return -1;
1894
1895         wpa_printf(MSG_DEBUG,
1896                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1897                    bss->nl_mgmt);
1898
1899         /* Auth frames for mesh SAE */
1900         if (nl80211_register_frame(bss, bss->nl_mgmt,
1901                                    (WLAN_FC_TYPE_MGMT << 2) |
1902                                    (WLAN_FC_STYPE_AUTH << 4),
1903                                    NULL, 0) < 0)
1904                 ret = -1;
1905
1906         /* Mesh peering open */
1907         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1908                 ret = -1;
1909         /* Mesh peering confirm */
1910         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1911                 ret = -1;
1912         /* Mesh peering close */
1913         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1914                 ret = -1;
1915
1916         nl80211_mgmt_handle_register_eloop(bss);
1917
1918         return ret;
1919 }
1920
1921
1922 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1923 {
1924         struct nl_msg *msg;
1925         int ret;
1926
1927         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1928         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1929         if (ret) {
1930                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1931                            "failed: ret=%d (%s)",
1932                            ret, strerror(-ret));
1933         }
1934         return ret;
1935 }
1936
1937
1938 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1939 {
1940         static const int stypes[] = {
1941                 WLAN_FC_STYPE_AUTH,
1942                 WLAN_FC_STYPE_ASSOC_REQ,
1943                 WLAN_FC_STYPE_REASSOC_REQ,
1944                 WLAN_FC_STYPE_DISASSOC,
1945                 WLAN_FC_STYPE_DEAUTH,
1946                 WLAN_FC_STYPE_ACTION,
1947                 WLAN_FC_STYPE_PROBE_REQ,
1948 /* Beacon doesn't work as mac80211 doesn't currently allow
1949  * it, but it wouldn't really be the right thing anyway as
1950  * it isn't per interface ... maybe just dump the scan
1951  * results periodically for OLBC?
1952  */
1953                 /* WLAN_FC_STYPE_BEACON, */
1954         };
1955         unsigned int i;
1956
1957         if (nl80211_alloc_mgmt_handle(bss))
1958                 return -1;
1959         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1960                    "handle %p", bss->nl_mgmt);
1961
1962         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
1963                 if (nl80211_register_frame(bss, bss->nl_mgmt,
1964                                            (WLAN_FC_TYPE_MGMT << 2) |
1965                                            (stypes[i] << 4),
1966                                            NULL, 0) < 0) {
1967                         goto out_err;
1968                 }
1969         }
1970
1971         if (nl80211_register_spurious_class3(bss))
1972                 goto out_err;
1973
1974         if (nl80211_get_wiphy_data_ap(bss) == NULL)
1975                 goto out_err;
1976
1977         nl80211_mgmt_handle_register_eloop(bss);
1978         return 0;
1979
1980 out_err:
1981         nl_destroy_handles(&bss->nl_mgmt);
1982         return -1;
1983 }
1984
1985
1986 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
1987 {
1988         if (nl80211_alloc_mgmt_handle(bss))
1989                 return -1;
1990         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1991                    "handle %p (device SME)", bss->nl_mgmt);
1992
1993         if (nl80211_register_frame(bss, bss->nl_mgmt,
1994                                    (WLAN_FC_TYPE_MGMT << 2) |
1995                                    (WLAN_FC_STYPE_ACTION << 4),
1996                                    NULL, 0) < 0)
1997                 goto out_err;
1998
1999         nl80211_mgmt_handle_register_eloop(bss);
2000         return 0;
2001
2002 out_err:
2003         nl_destroy_handles(&bss->nl_mgmt);
2004         return -1;
2005 }
2006
2007
2008 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2009 {
2010         if (bss->nl_mgmt == NULL)
2011                 return;
2012         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2013                    "(%s)", bss->nl_mgmt, reason);
2014         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2015
2016         nl80211_put_wiphy_data_ap(bss);
2017 }
2018
2019
2020 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2021 {
2022         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2023 }
2024
2025
2026 static void nl80211_del_p2pdev(struct i802_bss *bss)
2027 {
2028         struct nl_msg *msg;
2029         int ret;
2030
2031         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2032         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2033
2034         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2035                    bss->ifname, (long long unsigned int) bss->wdev_id,
2036                    strerror(-ret));
2037 }
2038
2039
2040 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2041 {
2042         struct nl_msg *msg;
2043         int ret;
2044
2045         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2046                               NL80211_CMD_STOP_P2P_DEVICE);
2047         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2048
2049         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2050                    start ? "Start" : "Stop",
2051                    bss->ifname, (long long unsigned int) bss->wdev_id,
2052                    strerror(-ret));
2053         return ret;
2054 }
2055
2056
2057 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2058 {
2059         enum nl80211_iftype nlmode;
2060
2061         nlmode = nl80211_get_ifmode(bss);
2062         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2063                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2064                                              bss->ifname, up);
2065         }
2066
2067         /* P2P Device has start/stop which is equivalent */
2068         return nl80211_set_p2pdev(bss, up);
2069 }
2070
2071
2072 #ifdef CONFIG_TESTING_OPTIONS
2073 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2074 {
2075         /* struct wpa_driver_nl80211_data *drv = arg; */
2076         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2077         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2078
2079
2080         wpa_printf(MSG_DEBUG,
2081                    "nl80211: QCA vendor test command response received");
2082
2083         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2084                   genlmsg_attrlen(gnlh, 0), NULL);
2085         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2086                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2087                 return NL_SKIP;
2088         }
2089
2090         wpa_hexdump(MSG_DEBUG,
2091                     "nl80211: Received QCA vendor test command response",
2092                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2093                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2094
2095         return NL_SKIP;
2096 }
2097 #endif /* CONFIG_TESTING_OPTIONS */
2098
2099
2100 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2101 {
2102 #ifdef CONFIG_TESTING_OPTIONS
2103         struct nl_msg *msg;
2104         struct nlattr *params;
2105         int ret;
2106
2107         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2108             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2109             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2110                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2111             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2112             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2113                 nlmsg_free(msg);
2114                 return;
2115         }
2116         nla_nest_end(msg, params);
2117
2118         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2119         wpa_printf(MSG_DEBUG,
2120                    "nl80211: QCA vendor test command returned %d (%s)",
2121                    ret, strerror(-ret));
2122 #endif /* CONFIG_TESTING_OPTIONS */
2123 }
2124
2125
2126 static int
2127 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2128                                    const u8 *set_addr, int first,
2129                                    const char *driver_params)
2130 {
2131         struct i802_bss *bss = drv->first_bss;
2132         int send_rfkill_event = 0;
2133         enum nl80211_iftype nlmode;
2134
2135         drv->ifindex = if_nametoindex(bss->ifname);
2136         bss->ifindex = drv->ifindex;
2137         bss->wdev_id = drv->global->if_add_wdevid;
2138         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2139
2140         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2141         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2142         drv->global->if_add_wdevid_set = 0;
2143
2144         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2145                 bss->static_ap = 1;
2146
2147         if (wpa_driver_nl80211_capa(drv))
2148                 return -1;
2149
2150         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2151                 return -1;
2152
2153         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2154                    bss->ifname, drv->phyname);
2155
2156         if (set_addr &&
2157             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2158              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2159                                 set_addr)))
2160                 return -1;
2161
2162         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2163                 drv->start_mode_ap = 1;
2164
2165         if (drv->hostapd || bss->static_ap)
2166                 nlmode = NL80211_IFTYPE_AP;
2167         else if (bss->if_dynamic)
2168                 nlmode = nl80211_get_ifmode(bss);
2169         else
2170                 nlmode = NL80211_IFTYPE_STATION;
2171
2172         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2173                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2174                 return -1;
2175         }
2176
2177         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2178                 nl80211_get_macaddr(bss);
2179
2180         if (!rfkill_is_blocked(drv->rfkill)) {
2181                 int ret = i802_set_iface_flags(bss, 1);
2182                 if (ret) {
2183                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2184                                    "interface '%s' UP", bss->ifname);
2185                         return ret;
2186                 }
2187                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2188                         return ret;
2189         } else {
2190                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2191                            "interface '%s' due to rfkill", bss->ifname);
2192                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2193                         return 0;
2194                 drv->if_disabled = 1;
2195                 send_rfkill_event = 1;
2196         }
2197
2198         if (!drv->hostapd)
2199                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2200                                        1, IF_OPER_DORMANT);
2201
2202         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2203                                bss->addr))
2204                 return -1;
2205         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2206
2207         if (send_rfkill_event) {
2208                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2209                                        drv, drv->ctx);
2210         }
2211
2212         if (drv->vendor_cmd_test_avail)
2213                 qca_vendor_test(drv);
2214
2215         return 0;
2216 }
2217
2218
2219 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2220 {
2221         struct nl_msg *msg;
2222
2223         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2224                    drv->ifindex);
2225         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2226         return send_and_recv_msgs(drv, msg, NULL, NULL);
2227 }
2228
2229
2230 /**
2231  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2232  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2233  *
2234  * Shut down driver interface and processing of driver events. Free
2235  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2236  */
2237 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2238 {
2239         struct wpa_driver_nl80211_data *drv = bss->drv;
2240
2241         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2242                    bss->ifname, drv->disabled_11b_rates);
2243
2244         bss->in_deinit = 1;
2245         if (drv->data_tx_status)
2246                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2247         if (drv->eapol_tx_sock >= 0)
2248                 close(drv->eapol_tx_sock);
2249
2250         if (bss->nl_preq)
2251                 wpa_driver_nl80211_probe_req_report(bss, 0);
2252         if (bss->added_if_into_bridge) {
2253                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2254                                     bss->ifname) < 0)
2255                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2256                                    "interface %s from bridge %s: %s",
2257                                    bss->ifname, bss->brname, strerror(errno));
2258                 if (drv->rtnl_sk)
2259                         nl80211_handle_destroy(drv->rtnl_sk);
2260         }
2261         if (bss->added_bridge) {
2262                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2263                                           0) < 0)
2264                         wpa_printf(MSG_INFO,
2265                                    "nl80211: Could not set bridge %s down",
2266                                    bss->brname);
2267                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2268                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2269                                    "bridge %s: %s",
2270                                    bss->brname, strerror(errno));
2271         }
2272
2273         nl80211_remove_monitor_interface(drv);
2274
2275         if (is_ap_interface(drv->nlmode))
2276                 wpa_driver_nl80211_del_beacon(drv);
2277
2278         if (drv->eapol_sock >= 0) {
2279                 eloop_unregister_read_sock(drv->eapol_sock);
2280                 close(drv->eapol_sock);
2281         }
2282
2283         if (drv->if_indices != drv->default_if_indices)
2284                 os_free(drv->if_indices);
2285
2286         if (drv->disabled_11b_rates)
2287                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2288
2289         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2290                                IF_OPER_UP);
2291         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2292         rfkill_deinit(drv->rfkill);
2293
2294         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2295
2296         if (!drv->start_iface_up)
2297                 (void) i802_set_iface_flags(bss, 0);
2298
2299         if (drv->addr_changed) {
2300                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2301                                           0) < 0) {
2302                         wpa_printf(MSG_DEBUG,
2303                                    "nl80211: Could not set interface down to restore permanent MAC address");
2304                 }
2305                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2306                                        drv->perm_addr) < 0) {
2307                         wpa_printf(MSG_DEBUG,
2308                                    "nl80211: Could not restore permanent MAC address");
2309                 }
2310         }
2311
2312         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2313                 if (!drv->hostapd || !drv->start_mode_ap)
2314                         wpa_driver_nl80211_set_mode(bss,
2315                                                     NL80211_IFTYPE_STATION);
2316                 nl80211_mgmt_unsubscribe(bss, "deinit");
2317         } else {
2318                 nl80211_mgmt_unsubscribe(bss, "deinit");
2319                 nl80211_del_p2pdev(bss);
2320         }
2321
2322         nl80211_destroy_bss(drv->first_bss);
2323
2324         os_free(drv->filter_ssids);
2325
2326         os_free(drv->auth_ie);
2327
2328         if (drv->in_interface_list)
2329                 dl_list_del(&drv->list);
2330
2331         os_free(drv->extended_capa);
2332         os_free(drv->extended_capa_mask);
2333         os_free(drv->first_bss);
2334         os_free(drv);
2335 }
2336
2337
2338 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2339 {
2340         switch (alg) {
2341         case WPA_ALG_WEP:
2342                 if (key_len == 5)
2343                         return WLAN_CIPHER_SUITE_WEP40;
2344                 return WLAN_CIPHER_SUITE_WEP104;
2345         case WPA_ALG_TKIP:
2346                 return WLAN_CIPHER_SUITE_TKIP;
2347         case WPA_ALG_CCMP:
2348                 return WLAN_CIPHER_SUITE_CCMP;
2349         case WPA_ALG_GCMP:
2350                 return WLAN_CIPHER_SUITE_GCMP;
2351         case WPA_ALG_CCMP_256:
2352                 return WLAN_CIPHER_SUITE_CCMP_256;
2353         case WPA_ALG_GCMP_256:
2354                 return WLAN_CIPHER_SUITE_GCMP_256;
2355         case WPA_ALG_IGTK:
2356                 return WLAN_CIPHER_SUITE_AES_CMAC;
2357         case WPA_ALG_BIP_GMAC_128:
2358                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2359         case WPA_ALG_BIP_GMAC_256:
2360                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2361         case WPA_ALG_BIP_CMAC_256:
2362                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2363         case WPA_ALG_SMS4:
2364                 return WLAN_CIPHER_SUITE_SMS4;
2365         case WPA_ALG_KRK:
2366                 return WLAN_CIPHER_SUITE_KRK;
2367         case WPA_ALG_NONE:
2368         case WPA_ALG_PMK:
2369                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2370                            alg);
2371                 return 0;
2372         }
2373
2374         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2375                    alg);
2376         return 0;
2377 }
2378
2379
2380 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2381 {
2382         switch (cipher) {
2383         case WPA_CIPHER_CCMP_256:
2384                 return WLAN_CIPHER_SUITE_CCMP_256;
2385         case WPA_CIPHER_GCMP_256:
2386                 return WLAN_CIPHER_SUITE_GCMP_256;
2387         case WPA_CIPHER_CCMP:
2388                 return WLAN_CIPHER_SUITE_CCMP;
2389         case WPA_CIPHER_GCMP:
2390                 return WLAN_CIPHER_SUITE_GCMP;
2391         case WPA_CIPHER_TKIP:
2392                 return WLAN_CIPHER_SUITE_TKIP;
2393         case WPA_CIPHER_WEP104:
2394                 return WLAN_CIPHER_SUITE_WEP104;
2395         case WPA_CIPHER_WEP40:
2396                 return WLAN_CIPHER_SUITE_WEP40;
2397         case WPA_CIPHER_GTK_NOT_USED:
2398                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2399         }
2400
2401         return 0;
2402 }
2403
2404
2405 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2406                                        int max_suites)
2407 {
2408         int num_suites = 0;
2409
2410         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2411                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2412         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2413                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2414         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2415                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2416         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2417                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2418         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2419                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2420         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2421                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2422         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2423                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2424
2425         return num_suites;
2426 }
2427
2428
2429 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2430                                   const u8 *key, size_t key_len)
2431 {
2432         struct nl_msg *msg;
2433         int ret;
2434
2435         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2436                 return 0;
2437
2438         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2439             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2440             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2441                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2442             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2443                 nl80211_nlmsg_clear(msg);
2444                 nlmsg_free(msg);
2445                 return -1;
2446         }
2447         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2448         if (ret) {
2449                 wpa_printf(MSG_DEBUG,
2450                            "nl80211: Key management set key failed: ret=%d (%s)",
2451                            ret, strerror(-ret));
2452         }
2453
2454         return ret;
2455 }
2456
2457
2458 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2459                                       enum wpa_alg alg, const u8 *addr,
2460                                       int key_idx, int set_tx,
2461                                       const u8 *seq, size_t seq_len,
2462                                       const u8 *key, size_t key_len)
2463 {
2464         struct wpa_driver_nl80211_data *drv = bss->drv;
2465         int ifindex;
2466         struct nl_msg *msg;
2467         int ret;
2468         int tdls = 0;
2469
2470         /* Ignore for P2P Device */
2471         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2472                 return 0;
2473
2474         ifindex = if_nametoindex(ifname);
2475         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2476                    "set_tx=%d seq_len=%lu key_len=%lu",
2477                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2478                    (unsigned long) seq_len, (unsigned long) key_len);
2479 #ifdef CONFIG_TDLS
2480         if (key_idx == -1) {
2481                 key_idx = 0;
2482                 tdls = 1;
2483         }
2484 #endif /* CONFIG_TDLS */
2485
2486         if (alg == WPA_ALG_PMK &&
2487             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2488                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2489                            __func__);
2490                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2491                 return ret;
2492         }
2493
2494         if (alg == WPA_ALG_NONE) {
2495                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2496                 if (!msg)
2497                         return -ENOBUFS;
2498         } else {
2499                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2500                 if (!msg ||
2501                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2502                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
2503                                 wpa_alg_to_cipher_suite(alg, key_len)))
2504                         goto fail;
2505                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2506         }
2507
2508         if (seq && seq_len) {
2509                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2510                         goto fail;
2511                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2512         }
2513
2514         if (addr && !is_broadcast_ether_addr(addr)) {
2515                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2516                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2517                         goto fail;
2518
2519                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2520                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2521                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2522                                         NL80211_KEYTYPE_GROUP))
2523                                 goto fail;
2524                 }
2525         } else if (addr && is_broadcast_ether_addr(addr)) {
2526                 struct nlattr *types;
2527
2528                 wpa_printf(MSG_DEBUG, "   broadcast key");
2529
2530                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2531                 if (!types ||
2532                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2533                         goto fail;
2534                 nla_nest_end(msg, types);
2535         }
2536         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2537                 goto fail;
2538
2539         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2540         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2541                 ret = 0;
2542         if (ret)
2543                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2544                            ret, strerror(-ret));
2545
2546         /*
2547          * If we failed or don't need to set the default TX key (below),
2548          * we're done here.
2549          */
2550         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2551                 return ret;
2552         if (is_ap_interface(drv->nlmode) && addr &&
2553             !is_broadcast_ether_addr(addr))
2554                 return ret;
2555
2556         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2557         if (!msg ||
2558             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2559             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2560                                alg == WPA_ALG_BIP_GMAC_128 ||
2561                                alg == WPA_ALG_BIP_GMAC_256 ||
2562                                alg == WPA_ALG_BIP_CMAC_256) ?
2563                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2564                          NL80211_ATTR_KEY_DEFAULT))
2565                 goto fail;
2566         if (addr && is_broadcast_ether_addr(addr)) {
2567                 struct nlattr *types;
2568
2569                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2570                 if (!types ||
2571                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2572                         goto fail;
2573                 nla_nest_end(msg, types);
2574         } else if (addr) {
2575                 struct nlattr *types;
2576
2577                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2578                 if (!types ||
2579                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2580                         goto fail;
2581                 nla_nest_end(msg, types);
2582         }
2583
2584         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2585         if (ret == -ENOENT)
2586                 ret = 0;
2587         if (ret)
2588                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2589                            "err=%d %s)", ret, strerror(-ret));
2590         return ret;
2591
2592 fail:
2593         nl80211_nlmsg_clear(msg);
2594         nlmsg_free(msg);
2595         return -ENOBUFS;
2596 }
2597
2598
2599 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2600                       int key_idx, int defkey,
2601                       const u8 *seq, size_t seq_len,
2602                       const u8 *key, size_t key_len)
2603 {
2604         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2605         if (!key_attr)
2606                 return -1;
2607
2608         if (defkey && alg == WPA_ALG_IGTK) {
2609                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2610                         return -1;
2611         } else if (defkey) {
2612                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2613                         return -1;
2614         }
2615
2616         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2617             nla_put_u32(msg, NL80211_KEY_CIPHER,
2618                         wpa_alg_to_cipher_suite(alg, key_len)) ||
2619             (seq && seq_len &&
2620              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2621             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2622                 return -1;
2623
2624         nla_nest_end(msg, key_attr);
2625
2626         return 0;
2627 }
2628
2629
2630 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2631                                  struct nl_msg *msg)
2632 {
2633         int i, privacy = 0;
2634         struct nlattr *nl_keys, *nl_key;
2635
2636         for (i = 0; i < 4; i++) {
2637                 if (!params->wep_key[i])
2638                         continue;
2639                 privacy = 1;
2640                 break;
2641         }
2642         if (params->wps == WPS_MODE_PRIVACY)
2643                 privacy = 1;
2644         if (params->pairwise_suite &&
2645             params->pairwise_suite != WPA_CIPHER_NONE)
2646                 privacy = 1;
2647
2648         if (!privacy)
2649                 return 0;
2650
2651         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2652                 return -ENOBUFS;
2653
2654         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2655         if (!nl_keys)
2656                 return -ENOBUFS;
2657
2658         for (i = 0; i < 4; i++) {
2659                 if (!params->wep_key[i])
2660                         continue;
2661
2662                 nl_key = nla_nest_start(msg, i);
2663                 if (!nl_key ||
2664                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2665                             params->wep_key[i]) ||
2666                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2667                                 params->wep_key_len[i] == 5 ?
2668                                 WLAN_CIPHER_SUITE_WEP40 :
2669                                 WLAN_CIPHER_SUITE_WEP104) ||
2670                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2671                     (i == params->wep_tx_keyidx &&
2672                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2673                         return -ENOBUFS;
2674
2675                 nla_nest_end(msg, nl_key);
2676         }
2677         nla_nest_end(msg, nl_keys);
2678
2679         return 0;
2680 }
2681
2682
2683 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2684                             const u8 *addr, int cmd, u16 reason_code,
2685                             int local_state_change)
2686 {
2687         int ret;
2688         struct nl_msg *msg;
2689
2690         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2691             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2692             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2693             (local_state_change &&
2694              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2695                 nlmsg_free(msg);
2696                 return -1;
2697         }
2698
2699         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2700         if (ret) {
2701                 wpa_dbg(drv->ctx, MSG_DEBUG,
2702                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2703                         reason_code, ret, strerror(-ret));
2704         }
2705         return ret;
2706 }
2707
2708
2709 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2710                                          int reason_code)
2711 {
2712         int ret;
2713
2714         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2715         nl80211_mark_disconnected(drv);
2716         /* Disconnect command doesn't need BSSID - it uses cached value */
2717         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2718                                       reason_code, 0);
2719         /*
2720          * For locally generated disconnect, supplicant already generates a
2721          * DEAUTH event, so ignore the event from NL80211.
2722          */
2723         drv->ignore_next_local_disconnect = ret == 0;
2724
2725         return ret;
2726 }
2727
2728
2729 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2730                                              const u8 *addr, int reason_code)
2731 {
2732         struct wpa_driver_nl80211_data *drv = bss->drv;
2733         int ret;
2734
2735         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2736                 nl80211_mark_disconnected(drv);
2737                 return nl80211_leave_ibss(drv, 1);
2738         }
2739         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2740                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2741         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2742                    __func__, MAC2STR(addr), reason_code);
2743         nl80211_mark_disconnected(drv);
2744         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2745                                       reason_code, 0);
2746         /*
2747          * For locally generated deauthenticate, supplicant already generates a
2748          * DEAUTH event, so ignore the event from NL80211.
2749          */
2750         drv->ignore_next_local_deauth = ret == 0;
2751         return ret;
2752 }
2753
2754
2755 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2756                                      struct wpa_driver_auth_params *params)
2757 {
2758         int i;
2759
2760         drv->auth_freq = params->freq;
2761         drv->auth_alg = params->auth_alg;
2762         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2763         drv->auth_local_state_change = params->local_state_change;
2764         drv->auth_p2p = params->p2p;
2765
2766         if (params->bssid)
2767                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2768         else
2769                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2770
2771         if (params->ssid) {
2772                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2773                 drv->auth_ssid_len = params->ssid_len;
2774         } else
2775                 drv->auth_ssid_len = 0;
2776
2777
2778         os_free(drv->auth_ie);
2779         drv->auth_ie = NULL;
2780         drv->auth_ie_len = 0;
2781         if (params->ie) {
2782                 drv->auth_ie = os_malloc(params->ie_len);
2783                 if (drv->auth_ie) {
2784                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2785                         drv->auth_ie_len = params->ie_len;
2786                 }
2787         }
2788
2789         for (i = 0; i < 4; i++) {
2790                 if (params->wep_key[i] && params->wep_key_len[i] &&
2791                     params->wep_key_len[i] <= 16) {
2792                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2793                                   params->wep_key_len[i]);
2794                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2795                 } else
2796                         drv->auth_wep_key_len[i] = 0;
2797         }
2798 }
2799
2800
2801 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2802 {
2803         struct wpa_driver_nl80211_data *drv = bss->drv;
2804
2805         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2806                 return;
2807
2808         /*
2809          * Looks like we failed to unmask 11b rates previously. This could
2810          * happen, e.g., if the interface was down at the point in time when a
2811          * P2P group was terminated.
2812          */
2813         wpa_printf(MSG_DEBUG,
2814                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2815                    bss->ifname);
2816         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2817 }
2818
2819
2820 static int wpa_driver_nl80211_authenticate(
2821         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2822 {
2823         struct wpa_driver_nl80211_data *drv = bss->drv;
2824         int ret = -1, i;
2825         struct nl_msg *msg;
2826         enum nl80211_auth_type type;
2827         enum nl80211_iftype nlmode;
2828         int count = 0;
2829         int is_retry;
2830
2831         nl80211_unmask_11b_rates(bss);
2832
2833         is_retry = drv->retry_auth;
2834         drv->retry_auth = 0;
2835         drv->ignore_deauth_event = 0;
2836
2837         nl80211_mark_disconnected(drv);
2838         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2839         if (params->bssid)
2840                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2841         else
2842                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2843         /* FIX: IBSS mode */
2844         nlmode = params->p2p ?
2845                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2846         if (drv->nlmode != nlmode &&
2847             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2848                 return -1;
2849
2850 retry:
2851         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2852                    drv->ifindex);
2853
2854         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2855         if (!msg)
2856                 goto fail;
2857
2858         for (i = 0; i < 4; i++) {
2859                 if (!params->wep_key[i])
2860                         continue;
2861                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2862                                            NULL, i,
2863                                            i == params->wep_tx_keyidx, NULL, 0,
2864                                            params->wep_key[i],
2865                                            params->wep_key_len[i]);
2866                 if (params->wep_tx_keyidx != i)
2867                         continue;
2868                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2869                                params->wep_key[i], params->wep_key_len[i]))
2870                         goto fail;
2871         }
2872
2873         if (params->bssid) {
2874                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2875                            MAC2STR(params->bssid));
2876                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2877                         goto fail;
2878         }
2879         if (params->freq) {
2880                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2881                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2882                         goto fail;
2883         }
2884         if (params->ssid) {
2885                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2886                                   params->ssid, params->ssid_len);
2887                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2888                             params->ssid))
2889                         goto fail;
2890         }
2891         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2892         if (params->ie &&
2893             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2894                 goto fail;
2895         if (params->sae_data) {
2896                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2897                             params->sae_data_len);
2898                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2899                             params->sae_data))
2900                         goto fail;
2901         }
2902         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2903                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2904         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2905                 type = NL80211_AUTHTYPE_SHARED_KEY;
2906         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2907                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2908         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2909                 type = NL80211_AUTHTYPE_FT;
2910         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2911                 type = NL80211_AUTHTYPE_SAE;
2912         else
2913                 goto fail;
2914         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2915         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2916                 goto fail;
2917         if (params->local_state_change) {
2918                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2919                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2920                         goto fail;
2921         }
2922
2923         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2924         msg = NULL;
2925         if (ret) {
2926                 wpa_dbg(drv->ctx, MSG_DEBUG,
2927                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2928                         ret, strerror(-ret));
2929                 count++;
2930                 if (ret == -EALREADY && count == 1 && params->bssid &&
2931                     !params->local_state_change) {
2932                         /*
2933                          * mac80211 does not currently accept new
2934                          * authentication if we are already authenticated. As a
2935                          * workaround, force deauthentication and try again.
2936                          */
2937                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2938                                    "after forced deauthentication");
2939                         drv->ignore_deauth_event = 1;
2940                         wpa_driver_nl80211_deauthenticate(
2941                                 bss, params->bssid,
2942                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2943                         nlmsg_free(msg);
2944                         goto retry;
2945                 }
2946
2947                 if (ret == -ENOENT && params->freq && !is_retry) {
2948                         /*
2949                          * cfg80211 has likely expired the BSS entry even
2950                          * though it was previously available in our internal
2951                          * BSS table. To recover quickly, start a single
2952                          * channel scan on the specified channel.
2953                          */
2954                         struct wpa_driver_scan_params scan;
2955                         int freqs[2];
2956
2957                         os_memset(&scan, 0, sizeof(scan));
2958                         scan.num_ssids = 1;
2959                         if (params->ssid) {
2960                                 scan.ssids[0].ssid = params->ssid;
2961                                 scan.ssids[0].ssid_len = params->ssid_len;
2962                         }
2963                         freqs[0] = params->freq;
2964                         freqs[1] = 0;
2965                         scan.freqs = freqs;
2966                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
2967                                    "channel scan to refresh cfg80211 BSS "
2968                                    "entry");
2969                         ret = wpa_driver_nl80211_scan(bss, &scan);
2970                         if (ret == 0) {
2971                                 nl80211_copy_auth_params(drv, params);
2972                                 drv->scan_for_auth = 1;
2973                         }
2974                 } else if (is_retry) {
2975                         /*
2976                          * Need to indicate this with an event since the return
2977                          * value from the retry is not delivered to core code.
2978                          */
2979                         union wpa_event_data event;
2980                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
2981                                    "failed");
2982                         os_memset(&event, 0, sizeof(event));
2983                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
2984                                   ETH_ALEN);
2985                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
2986                                              &event);
2987                 }
2988         } else {
2989                 wpa_printf(MSG_DEBUG,
2990                            "nl80211: Authentication request send successfully");
2991         }
2992
2993 fail:
2994         nlmsg_free(msg);
2995         return ret;
2996 }
2997
2998
2999 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3000 {
3001         struct wpa_driver_auth_params params;
3002         struct i802_bss *bss = drv->first_bss;
3003         int i;
3004
3005         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3006
3007         os_memset(&params, 0, sizeof(params));
3008         params.freq = drv->auth_freq;
3009         params.auth_alg = drv->auth_alg;
3010         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3011         params.local_state_change = drv->auth_local_state_change;
3012         params.p2p = drv->auth_p2p;
3013
3014         if (!is_zero_ether_addr(drv->auth_bssid_))
3015                 params.bssid = drv->auth_bssid_;
3016
3017         if (drv->auth_ssid_len) {
3018                 params.ssid = drv->auth_ssid;
3019                 params.ssid_len = drv->auth_ssid_len;
3020         }
3021
3022         params.ie = drv->auth_ie;
3023         params.ie_len = drv->auth_ie_len;
3024
3025         for (i = 0; i < 4; i++) {
3026                 if (drv->auth_wep_key_len[i]) {
3027                         params.wep_key[i] = drv->auth_wep_key[i];
3028                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3029                 }
3030         }
3031
3032         drv->retry_auth = 1;
3033         return wpa_driver_nl80211_authenticate(bss, &params);
3034 }
3035
3036
3037 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3038                                          const void *data, size_t len,
3039                                          int encrypt, int noack,
3040                                          unsigned int freq, int no_cck,
3041                                          int offchanok, unsigned int wait_time)
3042 {
3043         struct wpa_driver_nl80211_data *drv = bss->drv;
3044         u64 cookie;
3045         int res;
3046
3047         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3048                 freq = nl80211_get_assoc_freq(drv);
3049                 wpa_printf(MSG_DEBUG,
3050                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3051                            freq);
3052         }
3053         if (freq == 0) {
3054                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3055                            bss->freq);
3056                 freq = bss->freq;
3057         }
3058
3059         if (drv->use_monitor) {
3060                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3061                            freq, bss->freq);
3062                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3063         }
3064
3065         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3066         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3067                                      &cookie, no_cck, noack, offchanok);
3068         if (res == 0 && !noack) {
3069                 const struct ieee80211_mgmt *mgmt;
3070                 u16 fc;
3071
3072                 mgmt = (const struct ieee80211_mgmt *) data;
3073                 fc = le_to_host16(mgmt->frame_control);
3074                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3075                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3076                         wpa_printf(MSG_MSGDUMP,
3077                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3078                                    (long long unsigned int)
3079                                    drv->send_action_cookie,
3080                                    (long long unsigned int) cookie);
3081                         drv->send_action_cookie = cookie;
3082                 }
3083         }
3084
3085         return res;
3086 }
3087
3088
3089 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3090                                         size_t data_len, int noack,
3091                                         unsigned int freq, int no_cck,
3092                                         int offchanok,
3093                                         unsigned int wait_time)
3094 {
3095         struct wpa_driver_nl80211_data *drv = bss->drv;
3096         struct ieee80211_mgmt *mgmt;
3097         int encrypt = 1;
3098         u16 fc;
3099
3100         mgmt = (struct ieee80211_mgmt *) data;
3101         fc = le_to_host16(mgmt->frame_control);
3102         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3103                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3104                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3105                    fc, fc2str(fc), drv->nlmode);
3106
3107         if ((is_sta_interface(drv->nlmode) ||
3108              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3109             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3110             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3111                 /*
3112                  * The use of last_mgmt_freq is a bit of a hack,
3113                  * but it works due to the single-threaded nature
3114                  * of wpa_supplicant.
3115                  */
3116                 if (freq == 0) {
3117                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3118                                    drv->last_mgmt_freq);
3119                         freq = drv->last_mgmt_freq;
3120                 }
3121                 return nl80211_send_frame_cmd(bss, freq, 0,
3122                                               data, data_len, NULL, 1, noack,
3123                                               1);
3124         }
3125
3126         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3127                 if (freq == 0) {
3128                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3129                                    bss->freq);
3130                         freq = bss->freq;
3131                 }
3132                 return nl80211_send_frame_cmd(bss, freq,
3133                                               (int) freq == bss->freq ? 0 :
3134                                               wait_time,
3135                                               data, data_len,
3136                                               &drv->send_action_cookie,
3137                                               no_cck, noack, offchanok);
3138         }
3139
3140         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3141             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3142                 /*
3143                  * Only one of the authentication frame types is encrypted.
3144                  * In order for static WEP encryption to work properly (i.e.,
3145                  * to not encrypt the frame), we need to tell mac80211 about
3146                  * the frames that must not be encrypted.
3147                  */
3148                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3149                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3150                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3151                         encrypt = 0;
3152         }
3153
3154         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3155         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3156                                              noack, freq, no_cck, offchanok,
3157                                              wait_time);
3158 }
3159
3160
3161 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3162 {
3163         u8 rates[NL80211_MAX_SUPP_RATES];
3164         u8 rates_len = 0;
3165         int i;
3166
3167         if (!basic_rates)
3168                 return 0;
3169
3170         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3171                 rates[rates_len++] = basic_rates[i] / 5;
3172
3173         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3174 }
3175
3176
3177 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3178                            int slot, int ht_opmode, int ap_isolate,
3179                            const int *basic_rates)
3180 {
3181         struct wpa_driver_nl80211_data *drv = bss->drv;
3182         struct nl_msg *msg;
3183
3184         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3185             (cts >= 0 &&
3186              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3187             (preamble >= 0 &&
3188              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3189             (slot >= 0 &&
3190              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3191             (ht_opmode >= 0 &&
3192              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3193             (ap_isolate >= 0 &&
3194              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3195             nl80211_put_basic_rates(msg, basic_rates)) {
3196                 nlmsg_free(msg);
3197                 return -ENOBUFS;
3198         }
3199
3200         return send_and_recv_msgs(drv, msg, NULL, NULL);
3201 }
3202
3203
3204 static int wpa_driver_nl80211_set_acl(void *priv,
3205                                       struct hostapd_acl_params *params)
3206 {
3207         struct i802_bss *bss = priv;
3208         struct wpa_driver_nl80211_data *drv = bss->drv;
3209         struct nl_msg *msg;
3210         struct nlattr *acl;
3211         unsigned int i;
3212         int ret;
3213
3214         if (!(drv->capa.max_acl_mac_addrs))
3215                 return -ENOTSUP;
3216
3217         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3218                 return -ENOTSUP;
3219
3220         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3221                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3222
3223         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3224             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3225                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3226                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3227             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3228                 nlmsg_free(msg);
3229                 return -ENOMEM;
3230         }
3231
3232         for (i = 0; i < params->num_mac_acl; i++) {
3233                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3234                         nlmsg_free(msg);
3235                         return -ENOMEM;
3236                 }
3237         }
3238
3239         nla_nest_end(msg, acl);
3240
3241         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3242         if (ret) {
3243                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3244                            ret, strerror(-ret));
3245         }
3246
3247         return ret;
3248 }
3249
3250
3251 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3252 {
3253         if (beacon_int > 0) {
3254                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3255                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3256                                    beacon_int);
3257         }
3258
3259         return 0;
3260 }
3261
3262
3263 static int wpa_driver_nl80211_set_ap(void *priv,
3264                                      struct wpa_driver_ap_params *params)
3265 {
3266         struct i802_bss *bss = priv;
3267         struct wpa_driver_nl80211_data *drv = bss->drv;
3268         struct nl_msg *msg;
3269         u8 cmd = NL80211_CMD_NEW_BEACON;
3270         int ret;
3271         int beacon_set;
3272         int num_suites;
3273         int smps_mode;
3274         u32 suites[10], suite;
3275         u32 ver;
3276
3277         beacon_set = params->reenable ? 0 : bss->beacon_set;
3278
3279         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3280                    beacon_set);
3281         if (beacon_set)
3282                 cmd = NL80211_CMD_SET_BEACON;
3283
3284         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3285                     params->head, params->head_len);
3286         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3287                     params->tail, params->tail_len);
3288         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3289         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3290         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3291         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3292                           params->ssid, params->ssid_len);
3293         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3294             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3295                     params->head) ||
3296             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3297                     params->tail) ||
3298             nl80211_put_beacon_int(msg, params->beacon_int) ||
3299             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3300             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3301                 goto fail;
3302         if (params->proberesp && params->proberesp_len) {
3303                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3304                             params->proberesp, params->proberesp_len);
3305                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3306                             params->proberesp))
3307                         goto fail;
3308         }
3309         switch (params->hide_ssid) {
3310         case NO_SSID_HIDING:
3311                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3312                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3313                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3314                         goto fail;
3315                 break;
3316         case HIDDEN_SSID_ZERO_LEN:
3317                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3318                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3319                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3320                         goto fail;
3321                 break;
3322         case HIDDEN_SSID_ZERO_CONTENTS:
3323                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3324                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3325                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3326                         goto fail;
3327                 break;
3328         }
3329         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3330         if (params->privacy &&
3331             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3332                 goto fail;
3333         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3334         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3335             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3336                 /* Leave out the attribute */
3337         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3338                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3339                                 NL80211_AUTHTYPE_SHARED_KEY))
3340                         goto fail;
3341         } else {
3342                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3343                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3344                         goto fail;
3345         }
3346
3347         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3348         ver = 0;
3349         if (params->wpa_version & WPA_PROTO_WPA)
3350                 ver |= NL80211_WPA_VERSION_1;
3351         if (params->wpa_version & WPA_PROTO_RSN)
3352                 ver |= NL80211_WPA_VERSION_2;
3353         if (ver &&
3354             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3355                 goto fail;
3356
3357         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3358                    params->key_mgmt_suites);
3359         num_suites = 0;
3360         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3361                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3362         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3363                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3364         if (num_suites &&
3365             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3366                     suites))
3367                 goto fail;
3368
3369         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3370             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3371             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3372                 goto fail;
3373
3374         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3375                    params->pairwise_ciphers);
3376         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3377                                                  suites, ARRAY_SIZE(suites));
3378         if (num_suites &&
3379             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3380                     num_suites * sizeof(u32), suites))
3381                 goto fail;
3382
3383         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3384                    params->group_cipher);
3385         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3386         if (suite &&
3387             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3388                 goto fail;
3389
3390         switch (params->smps_mode) {
3391         case HT_CAP_INFO_SMPS_DYNAMIC:
3392                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3393                 smps_mode = NL80211_SMPS_DYNAMIC;
3394                 break;
3395         case HT_CAP_INFO_SMPS_STATIC:
3396                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3397                 smps_mode = NL80211_SMPS_STATIC;
3398                 break;
3399         default:
3400                 /* invalid - fallback to smps off */
3401         case HT_CAP_INFO_SMPS_DISABLED:
3402                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3403                 smps_mode = NL80211_SMPS_OFF;
3404                 break;
3405         }
3406         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3407                 goto fail;
3408
3409         if (params->beacon_ies) {
3410                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3411                                 params->beacon_ies);
3412                 if (nla_put(msg, NL80211_ATTR_IE,
3413                             wpabuf_len(params->beacon_ies),
3414                             wpabuf_head(params->beacon_ies)))
3415                         goto fail;
3416         }
3417         if (params->proberesp_ies) {
3418                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3419                                 params->proberesp_ies);
3420                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3421                             wpabuf_len(params->proberesp_ies),
3422                             wpabuf_head(params->proberesp_ies)))
3423                         goto fail;
3424         }
3425         if (params->assocresp_ies) {
3426                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3427                                 params->assocresp_ies);
3428                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3429                             wpabuf_len(params->assocresp_ies),
3430                             wpabuf_head(params->assocresp_ies)))
3431                         goto fail;
3432         }
3433
3434         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3435                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3436                            params->ap_max_inactivity);
3437                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3438                                 params->ap_max_inactivity))
3439                         goto fail;
3440         }
3441
3442 #ifdef CONFIG_P2P
3443         if (params->p2p_go_ctwindow > 0) {
3444                 if (drv->p2p_go_ctwindow_supported) {
3445                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3446                                    params->p2p_go_ctwindow);
3447                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3448                                        params->p2p_go_ctwindow))
3449                                 goto fail;
3450                 } else {
3451                         wpa_printf(MSG_INFO,
3452                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3453                 }
3454         }
3455 #endif /* CONFIG_P2P */
3456
3457         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3458         if (ret) {
3459                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3460                            ret, strerror(-ret));
3461         } else {
3462                 bss->beacon_set = 1;
3463                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3464                                 params->short_slot_time, params->ht_opmode,
3465                                 params->isolate, params->basic_rates);
3466                 if (beacon_set && params->freq &&
3467                     params->freq->bandwidth != bss->bandwidth) {
3468                         wpa_printf(MSG_DEBUG,
3469                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3470                                    bss->ifname, bss->bandwidth,
3471                                    params->freq->bandwidth);
3472                         ret = nl80211_set_channel(bss, params->freq, 1);
3473                         if (ret) {
3474                                 wpa_printf(MSG_DEBUG,
3475                                            "nl80211: Frequency set failed: %d (%s)",
3476                                            ret, strerror(-ret));
3477                         } else {
3478                                 wpa_printf(MSG_DEBUG,
3479                                            "nl80211: Frequency set succeeded for ht2040 coex");
3480                                 bss->bandwidth = params->freq->bandwidth;
3481                         }
3482                 } else if (!beacon_set) {
3483                         /*
3484                          * cfg80211 updates the driver on frequence change in AP
3485                          * mode only at the point when beaconing is started, so
3486                          * set the initial value here.
3487                          */
3488                         bss->bandwidth = params->freq->bandwidth;
3489                 }
3490         }
3491         return ret;
3492 fail:
3493         nlmsg_free(msg);
3494         return -ENOBUFS;
3495 }
3496
3497
3498 static int nl80211_put_freq_params(struct nl_msg *msg,
3499                                    const struct hostapd_freq_params *freq)
3500 {
3501         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3502         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3503                 return -ENOBUFS;
3504
3505         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3506         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3507
3508         if (freq->vht_enabled) {
3509                 enum nl80211_chan_width cw;
3510
3511                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3512                 switch (freq->bandwidth) {
3513                 case 20:
3514                         cw = NL80211_CHAN_WIDTH_20;
3515                         break;
3516                 case 40:
3517                         cw = NL80211_CHAN_WIDTH_40;
3518                         break;
3519                 case 80:
3520                         if (freq->center_freq2)
3521                                 cw = NL80211_CHAN_WIDTH_80P80;
3522                         else
3523                                 cw = NL80211_CHAN_WIDTH_80;
3524                         break;
3525                 case 160:
3526                         cw = NL80211_CHAN_WIDTH_160;
3527                         break;
3528                 default:
3529                         return -EINVAL;
3530                 }
3531
3532                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3533                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3534                            freq->center_freq1);
3535                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3536                            freq->center_freq2);
3537                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3538                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3539                                 freq->center_freq1) ||
3540                     (freq->center_freq2 &&
3541                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3542                                  freq->center_freq2)))
3543                         return -ENOBUFS;
3544         } else if (freq->ht_enabled) {
3545                 enum nl80211_channel_type ct;
3546
3547                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3548                            freq->sec_channel_offset);
3549                 switch (freq->sec_channel_offset) {
3550                 case -1:
3551                         ct = NL80211_CHAN_HT40MINUS;
3552                         break;
3553                 case 1:
3554                         ct = NL80211_CHAN_HT40PLUS;
3555                         break;
3556                 default:
3557                         ct = NL80211_CHAN_HT20;
3558                         break;
3559                 }
3560
3561                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3562                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3563                         return -ENOBUFS;
3564         }
3565         return 0;
3566 }
3567
3568
3569 static int nl80211_set_channel(struct i802_bss *bss,
3570                                struct hostapd_freq_params *freq, int set_chan)
3571 {
3572         struct wpa_driver_nl80211_data *drv = bss->drv;
3573         struct nl_msg *msg;
3574         int ret;
3575
3576         wpa_printf(MSG_DEBUG,
3577                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3578                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3579                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3580
3581         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3582                               NL80211_CMD_SET_WIPHY);
3583         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3584                 nlmsg_free(msg);
3585                 return -1;
3586         }
3587
3588         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3589         if (ret == 0) {
3590                 bss->freq = freq->freq;
3591                 return 0;
3592         }
3593         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3594                    "%d (%s)", freq->freq, ret, strerror(-ret));
3595         return -1;
3596 }
3597
3598
3599 static u32 sta_flags_nl80211(int flags)
3600 {
3601         u32 f = 0;
3602
3603         if (flags & WPA_STA_AUTHORIZED)
3604                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3605         if (flags & WPA_STA_WMM)
3606                 f |= BIT(NL80211_STA_FLAG_WME);
3607         if (flags & WPA_STA_SHORT_PREAMBLE)
3608                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3609         if (flags & WPA_STA_MFP)
3610                 f |= BIT(NL80211_STA_FLAG_MFP);
3611         if (flags & WPA_STA_TDLS_PEER)
3612                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3613         if (flags & WPA_STA_AUTHENTICATED)
3614                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3615
3616         return f;
3617 }
3618
3619
3620 #ifdef CONFIG_MESH
3621 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3622 {
3623         switch (state) {
3624         case PLINK_LISTEN:
3625                 return NL80211_PLINK_LISTEN;
3626         case PLINK_OPEN_SENT:
3627                 return NL80211_PLINK_OPN_SNT;
3628         case PLINK_OPEN_RCVD:
3629                 return NL80211_PLINK_OPN_RCVD;
3630         case PLINK_CNF_RCVD:
3631                 return NL80211_PLINK_CNF_RCVD;
3632         case PLINK_ESTAB:
3633                 return NL80211_PLINK_ESTAB;
3634         case PLINK_HOLDING:
3635                 return NL80211_PLINK_HOLDING;
3636         case PLINK_BLOCKED:
3637                 return NL80211_PLINK_BLOCKED;
3638         default:
3639                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3640                            state);
3641         }
3642         return -1;
3643 }
3644 #endif /* CONFIG_MESH */
3645
3646
3647 static int wpa_driver_nl80211_sta_add(void *priv,
3648                                       struct hostapd_sta_add_params *params)
3649 {
3650         struct i802_bss *bss = priv;
3651         struct wpa_driver_nl80211_data *drv = bss->drv;
3652         struct nl_msg *msg;
3653         struct nl80211_sta_flag_update upd;
3654         int ret = -ENOBUFS;
3655
3656         if ((params->flags & WPA_STA_TDLS_PEER) &&
3657             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3658                 return -EOPNOTSUPP;
3659
3660         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3661                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3662         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3663                               NL80211_CMD_NEW_STATION);
3664         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3665                 goto fail;
3666
3667         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3668                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3669                             params->supp_rates, params->supp_rates_len);
3670                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3671                            params->capability);
3672                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3673                             params->supp_rates_len, params->supp_rates) ||
3674                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3675                                 params->capability))
3676                         goto fail;
3677
3678                 if (params->ht_capabilities) {
3679                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3680                                     (u8 *) params->ht_capabilities,
3681                                     sizeof(*params->ht_capabilities));
3682                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3683                                     sizeof(*params->ht_capabilities),
3684                                     params->ht_capabilities))
3685                                 goto fail;
3686                 }
3687
3688                 if (params->vht_capabilities) {
3689                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3690                                     (u8 *) params->vht_capabilities,
3691                                     sizeof(*params->vht_capabilities));
3692                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3693                                     sizeof(*params->vht_capabilities),
3694                                     params->vht_capabilities))
3695                                 goto fail;
3696                 }
3697
3698                 if (params->ext_capab) {
3699                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3700                                     params->ext_capab, params->ext_capab_len);
3701                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3702                                     params->ext_capab_len, params->ext_capab))
3703                                 goto fail;
3704                 }
3705         }
3706         if (!params->set) {
3707                 if (params->aid) {
3708                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3709                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3710                                 goto fail;
3711                 } else {
3712                         /*
3713                          * cfg80211 validates that AID is non-zero, so we have
3714                          * to make this a non-zero value for the TDLS case where
3715                          * a dummy STA entry is used for now.
3716                          */
3717                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3718                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3719                                 goto fail;
3720                 }
3721                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3722                            params->listen_interval);
3723                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3724                                 params->listen_interval))
3725                         goto fail;
3726         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3727                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3728                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3729                         goto fail;
3730         }
3731
3732         if (params->vht_opmode_enabled) {
3733                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3734                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3735                                params->vht_opmode))
3736                         goto fail;
3737         }
3738
3739         if (params->supp_channels) {
3740                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3741                             params->supp_channels, params->supp_channels_len);
3742                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3743                             params->supp_channels_len, params->supp_channels))
3744                         goto fail;
3745         }
3746
3747         if (params->supp_oper_classes) {
3748                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3749                             params->supp_oper_classes,
3750                             params->supp_oper_classes_len);
3751                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3752                             params->supp_oper_classes_len,
3753                             params->supp_oper_classes))
3754                         goto fail;
3755         }
3756
3757         os_memset(&upd, 0, sizeof(upd));
3758         upd.set = sta_flags_nl80211(params->flags);
3759         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3760         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3761                    upd.set, upd.mask);
3762         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3763                 goto fail;
3764
3765 #ifdef CONFIG_MESH
3766         if (params->plink_state &&
3767             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3768                        sta_plink_state_nl80211(params->plink_state)))
3769                 goto fail;
3770 #endif /* CONFIG_MESH */
3771
3772         if (params->flags & WPA_STA_WMM) {
3773                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3774
3775                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3776                 if (!wme ||
3777                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3778                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3779                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3780                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3781                                WMM_QOSINFO_STA_SP_MASK))
3782                         goto fail;
3783                 nla_nest_end(msg, wme);
3784         }
3785
3786         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3787         msg = NULL;
3788         if (ret)
3789                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3790                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3791                            strerror(-ret));
3792         if (ret == -EEXIST)
3793                 ret = 0;
3794 fail:
3795         nlmsg_free(msg);
3796         return ret;
3797 }
3798
3799
3800 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3801 {
3802 #ifdef CONFIG_LIBNL3_ROUTE
3803         struct wpa_driver_nl80211_data *drv = bss->drv;
3804         struct rtnl_neigh *rn;
3805         struct nl_addr *nl_addr;
3806         int err;
3807
3808         rn = rtnl_neigh_alloc();
3809         if (!rn)
3810                 return;
3811
3812         rtnl_neigh_set_family(rn, AF_BRIDGE);
3813         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3814         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3815         if (!nl_addr) {
3816                 rtnl_neigh_put(rn);
3817                 return;
3818         }
3819         rtnl_neigh_set_lladdr(rn, nl_addr);
3820
3821         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3822         if (err < 0) {
3823                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3824                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3825                            bss->ifindex, nl_geterror(err));
3826         } else {
3827                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3828                            MACSTR, MAC2STR(addr));
3829         }
3830
3831         nl_addr_put(nl_addr);
3832         rtnl_neigh_put(rn);
3833 #endif /* CONFIG_LIBNL3_ROUTE */
3834 }
3835
3836
3837 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3838                                          int deauth, u16 reason_code)
3839 {
3840         struct wpa_driver_nl80211_data *drv = bss->drv;
3841         struct nl_msg *msg;
3842         int ret;
3843
3844         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3845             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3846             (deauth == 0 &&
3847              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3848                         WLAN_FC_STYPE_DISASSOC)) ||
3849             (deauth == 1 &&
3850              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3851                         WLAN_FC_STYPE_DEAUTH)) ||
3852             (reason_code &&
3853              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3854                 nlmsg_free(msg);
3855                 return -ENOBUFS;
3856         }
3857
3858         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3859         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3860                    " --> %d (%s)",
3861                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3862
3863         if (drv->rtnl_sk)
3864                 rtnl_neigh_delete_fdb_entry(bss, addr);
3865
3866         if (ret == -ENOENT)
3867                 return 0;
3868         return ret;
3869 }
3870
3871
3872 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3873 {
3874         struct nl_msg *msg;
3875         struct wpa_driver_nl80211_data *drv2;
3876
3877         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3878
3879         /* stop listening for EAPOL on this interface */
3880         dl_list_for_each(drv2, &drv->global->interfaces,
3881                          struct wpa_driver_nl80211_data, list)
3882                 del_ifidx(drv2, ifidx);
3883
3884         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3885         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3886                 return;
3887         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3888 }
3889
3890
3891 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3892 {
3893         switch (mode) {
3894         case NL80211_IFTYPE_ADHOC:
3895                 return "ADHOC";
3896         case NL80211_IFTYPE_STATION:
3897                 return "STATION";
3898         case NL80211_IFTYPE_AP:
3899                 return "AP";
3900         case NL80211_IFTYPE_AP_VLAN:
3901                 return "AP_VLAN";
3902         case NL80211_IFTYPE_WDS:
3903                 return "WDS";
3904         case NL80211_IFTYPE_MONITOR:
3905                 return "MONITOR";
3906         case NL80211_IFTYPE_MESH_POINT:
3907                 return "MESH_POINT";
3908         case NL80211_IFTYPE_P2P_CLIENT:
3909                 return "P2P_CLIENT";
3910         case NL80211_IFTYPE_P2P_GO:
3911                 return "P2P_GO";
3912         case NL80211_IFTYPE_P2P_DEVICE:
3913                 return "P2P_DEVICE";
3914         default:
3915                 return "unknown";
3916         }
3917 }
3918
3919
3920 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3921                                      const char *ifname,
3922                                      enum nl80211_iftype iftype,
3923                                      const u8 *addr, int wds,
3924                                      int (*handler)(struct nl_msg *, void *),
3925                                      void *arg)
3926 {
3927         struct nl_msg *msg;
3928         int ifidx;
3929         int ret = -ENOBUFS;
3930
3931         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3932                    iftype, nl80211_iftype_str(iftype));
3933
3934         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3935         if (!msg ||
3936             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3937             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3938                 goto fail;
3939
3940         if (iftype == NL80211_IFTYPE_MONITOR) {
3941                 struct nlattr *flags;
3942
3943                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3944                 if (!flags ||
3945                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3946                         goto fail;
3947
3948                 nla_nest_end(msg, flags);
3949         } else if (wds) {
3950                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
3951                         goto fail;
3952         }
3953
3954         /*
3955          * Tell cfg80211 that the interface belongs to the socket that created
3956          * it, and the interface should be deleted when the socket is closed.
3957          */
3958         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
3959                 goto fail;
3960
3961         ret = send_and_recv_msgs(drv, msg, handler, arg);
3962         msg = NULL;
3963         if (ret) {
3964         fail:
3965                 nlmsg_free(msg);
3966                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3967                            ifname, ret, strerror(-ret));
3968                 return ret;
3969         }
3970
3971         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
3972                 return 0;
3973
3974         ifidx = if_nametoindex(ifname);
3975         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3976                    ifname, ifidx);
3977
3978         if (ifidx <= 0)
3979                 return -1;
3980
3981         /*
3982          * Some virtual interfaces need to process EAPOL packets and events on
3983          * the parent interface. This is used mainly with hostapd.
3984          */
3985         if (drv->hostapd ||
3986             iftype == NL80211_IFTYPE_AP_VLAN ||
3987             iftype == NL80211_IFTYPE_WDS ||
3988             iftype == NL80211_IFTYPE_MONITOR) {
3989                 /* start listening for EAPOL on this interface */
3990                 add_ifidx(drv, ifidx);
3991         }
3992
3993         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3994             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
3995                 nl80211_remove_iface(drv, ifidx);
3996                 return -1;
3997         }
3998
3999         return ifidx;
4000 }
4001
4002
4003 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4004                          const char *ifname, enum nl80211_iftype iftype,
4005                          const u8 *addr, int wds,
4006                          int (*handler)(struct nl_msg *, void *),
4007                          void *arg, int use_existing)
4008 {
4009         int ret;
4010
4011         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4012                                         arg);
4013
4014         /* if error occurred and interface exists already */
4015         if (ret == -ENFILE && if_nametoindex(ifname)) {
4016                 if (use_existing) {
4017                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4018                                    ifname);
4019                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4020                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4021                                                addr) < 0 &&
4022                             (linux_set_iface_flags(drv->global->ioctl_sock,
4023                                                    ifname, 0) < 0 ||
4024                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4025                                                 addr) < 0 ||
4026                              linux_set_iface_flags(drv->global->ioctl_sock,
4027                                                    ifname, 1) < 0))
4028                                         return -1;
4029                         return -ENFILE;
4030                 }
4031                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4032
4033                 /* Try to remove the interface that was already there. */
4034                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4035
4036                 /* Try to create the interface again */
4037                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4038                                                 wds, handler, arg);
4039         }
4040
4041         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4042                 wpa_printf(MSG_DEBUG,
4043                            "nl80211: Interface %s created for P2P - disable 11b rates",
4044                            ifname);
4045                 nl80211_disable_11b_rates(drv, ret, 1);
4046         }
4047
4048         return ret;
4049 }
4050
4051
4052 static int nl80211_setup_ap(struct i802_bss *bss)
4053 {
4054         struct wpa_driver_nl80211_data *drv = bss->drv;
4055
4056         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4057                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4058
4059         /*
4060          * Disable Probe Request reporting unless we need it in this way for
4061          * devices that include the AP SME, in the other case (unless using
4062          * monitor iface) we'll get it through the nl_mgmt socket instead.
4063          */
4064         if (!drv->device_ap_sme)
4065                 wpa_driver_nl80211_probe_req_report(bss, 0);
4066
4067         if (!drv->device_ap_sme && !drv->use_monitor)
4068                 if (nl80211_mgmt_subscribe_ap(bss))
4069                         return -1;
4070
4071         if (drv->device_ap_sme && !drv->use_monitor)
4072                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4073                         return -1;
4074
4075         if (!drv->device_ap_sme && drv->use_monitor &&
4076             nl80211_create_monitor_interface(drv) &&
4077             !drv->device_ap_sme)
4078                 return -1;
4079
4080         if (drv->device_ap_sme &&
4081             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4082                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4083                            "Probe Request frame reporting in AP mode");
4084                 /* Try to survive without this */
4085         }
4086
4087         return 0;
4088 }
4089
4090
4091 static void nl80211_teardown_ap(struct i802_bss *bss)
4092 {
4093         struct wpa_driver_nl80211_data *drv = bss->drv;
4094
4095         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4096                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4097         if (drv->device_ap_sme) {
4098                 wpa_driver_nl80211_probe_req_report(bss, 0);
4099                 if (!drv->use_monitor)
4100                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4101         } else if (drv->use_monitor)
4102                 nl80211_remove_monitor_interface(drv);
4103         else
4104                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4105
4106         bss->beacon_set = 0;
4107 }
4108
4109
4110 static int nl80211_send_eapol_data(struct i802_bss *bss,
4111                                    const u8 *addr, const u8 *data,
4112                                    size_t data_len)
4113 {
4114         struct sockaddr_ll ll;
4115         int ret;
4116
4117         if (bss->drv->eapol_tx_sock < 0) {
4118                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4119                 return -1;
4120         }
4121
4122         os_memset(&ll, 0, sizeof(ll));
4123         ll.sll_family = AF_PACKET;
4124         ll.sll_ifindex = bss->ifindex;
4125         ll.sll_protocol = htons(ETH_P_PAE);
4126         ll.sll_halen = ETH_ALEN;
4127         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4128         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4129                      (struct sockaddr *) &ll, sizeof(ll));
4130         if (ret < 0)
4131                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4132                            strerror(errno));
4133
4134         return ret;
4135 }
4136
4137
4138 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4139
4140 static int wpa_driver_nl80211_hapd_send_eapol(
4141         void *priv, const u8 *addr, const u8 *data,
4142         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4143 {
4144         struct i802_bss *bss = priv;
4145         struct wpa_driver_nl80211_data *drv = bss->drv;
4146         struct ieee80211_hdr *hdr;
4147         size_t len;
4148         u8 *pos;
4149         int res;
4150         int qos = flags & WPA_STA_WMM;
4151
4152         if (drv->device_ap_sme || !drv->use_monitor)
4153                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4154
4155         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4156                 data_len;
4157         hdr = os_zalloc(len);
4158         if (hdr == NULL) {
4159                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4160                            (unsigned long) len);
4161                 return -1;
4162         }
4163
4164         hdr->frame_control =
4165                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4166         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4167         if (encrypt)
4168                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4169         if (qos) {
4170                 hdr->frame_control |=
4171                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4172         }
4173
4174         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4175         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4176         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4177         pos = (u8 *) (hdr + 1);
4178
4179         if (qos) {
4180                 /* Set highest priority in QoS header */
4181                 pos[0] = 7;
4182                 pos[1] = 0;
4183                 pos += 2;
4184         }
4185
4186         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4187         pos += sizeof(rfc1042_header);
4188         WPA_PUT_BE16(pos, ETH_P_PAE);
4189         pos += 2;
4190         memcpy(pos, data, data_len);
4191
4192         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4193                                             0, 0, 0, 0);
4194         if (res < 0) {
4195                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4196                            "failed: %d (%s)",
4197                            (unsigned long) len, errno, strerror(errno));
4198         }
4199         os_free(hdr);
4200
4201         return res;
4202 }
4203
4204
4205 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4206                                             int total_flags,
4207                                             int flags_or, int flags_and)
4208 {
4209         struct i802_bss *bss = priv;
4210         struct nl_msg *msg;
4211         struct nlattr *flags;
4212         struct nl80211_sta_flag_update upd;
4213
4214         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4215                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4216                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4217                    !!(total_flags & WPA_STA_AUTHORIZED));
4218
4219         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4220             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4221                 goto fail;
4222
4223         /*
4224          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4225          * can be removed eventually.
4226          */
4227         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4228         if (!flags ||
4229             ((total_flags & WPA_STA_AUTHORIZED) &&
4230              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4231             ((total_flags & WPA_STA_WMM) &&
4232              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4233             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4234              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4235             ((total_flags & WPA_STA_MFP) &&
4236              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4237             ((total_flags & WPA_STA_TDLS_PEER) &&
4238              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4239                 goto fail;
4240
4241         nla_nest_end(msg, flags);
4242
4243         os_memset(&upd, 0, sizeof(upd));
4244         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4245         upd.set = sta_flags_nl80211(flags_or);
4246         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4247                 goto fail;
4248
4249         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4250 fail:
4251         nlmsg_free(msg);
4252         return -ENOBUFS;
4253 }
4254
4255
4256 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4257                                  struct wpa_driver_associate_params *params)
4258 {
4259         enum nl80211_iftype nlmode, old_mode;
4260
4261         if (params->p2p) {
4262                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4263                            "group (GO)");
4264                 nlmode = NL80211_IFTYPE_P2P_GO;
4265         } else
4266                 nlmode = NL80211_IFTYPE_AP;
4267
4268         old_mode = drv->nlmode;
4269         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4270                 nl80211_remove_monitor_interface(drv);
4271                 return -1;
4272         }
4273
4274         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4275                 if (old_mode != nlmode)
4276                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4277                 nl80211_remove_monitor_interface(drv);
4278                 return -1;
4279         }
4280
4281         return 0;
4282 }
4283
4284
4285 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4286                               int reset_mode)
4287 {
4288         struct nl_msg *msg;
4289         int ret;
4290
4291         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4292         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4293         if (ret) {
4294                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4295                            "(%s)", ret, strerror(-ret));
4296         } else {
4297                 wpa_printf(MSG_DEBUG,
4298                            "nl80211: Leave IBSS request sent successfully");
4299         }
4300
4301         if (reset_mode &&
4302             wpa_driver_nl80211_set_mode(drv->first_bss,
4303                                         NL80211_IFTYPE_STATION)) {
4304                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4305                            "station mode");
4306         }
4307
4308         return ret;
4309 }
4310
4311
4312 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4313                                     struct wpa_driver_associate_params *params)
4314 {
4315         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4316                 return -1;
4317
4318         if (params->htcaps && params->htcaps_mask) {
4319                 int sz = sizeof(struct ieee80211_ht_capabilities);
4320                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4321                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4322                             params->htcaps_mask, sz);
4323                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4324                             params->htcaps) ||
4325                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4326                             params->htcaps_mask))
4327                         return -1;
4328         }
4329
4330 #ifdef CONFIG_VHT_OVERRIDES
4331         if (params->disable_vht) {
4332                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4333                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4334                         return -1;
4335         }
4336
4337         if (params->vhtcaps && params->vhtcaps_mask) {
4338                 int sz = sizeof(struct ieee80211_vht_capabilities);
4339                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4340                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4341                             params->vhtcaps_mask, sz);
4342                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4343                             params->vhtcaps) ||
4344                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4345                             params->vhtcaps_mask))
4346                         return -1;
4347         }
4348 #endif /* CONFIG_VHT_OVERRIDES */
4349
4350         return 0;
4351 }
4352
4353
4354 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4355                                    struct wpa_driver_associate_params *params)
4356 {
4357         struct nl_msg *msg;
4358         int ret = -1;
4359         int count = 0;
4360
4361         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4362
4363         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4364                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4365                            "IBSS mode");
4366                 return -1;
4367         }
4368
4369 retry:
4370         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4371             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4372                 goto fail;
4373
4374         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4375                           params->ssid, params->ssid_len);
4376         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4377                 goto fail;
4378         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4379         drv->ssid_len = params->ssid_len;
4380
4381         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4382             nl80211_put_beacon_int(msg, params->beacon_int))
4383                 goto fail;
4384
4385         ret = nl80211_set_conn_keys(params, msg);
4386         if (ret)
4387                 goto fail;
4388
4389         if (params->bssid && params->fixed_bssid) {
4390                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4391                            MAC2STR(params->bssid));
4392                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4393                         goto fail;
4394         }
4395
4396         if (params->fixed_freq) {
4397                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4398                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4399                         goto fail;
4400         }
4401
4402         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4403             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4404             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4405             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4406                 wpa_printf(MSG_DEBUG, "  * control port");
4407                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4408                         goto fail;
4409         }
4410
4411         if (params->wpa_ie) {
4412                 wpa_hexdump(MSG_DEBUG,
4413                             "  * Extra IEs for Beacon/Probe Response frames",
4414                             params->wpa_ie, params->wpa_ie_len);
4415                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4416                             params->wpa_ie))
4417                         goto fail;
4418         }
4419
4420         if (nl80211_ht_vht_overrides(msg, params) < 0)
4421                 return -1;
4422
4423         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4424         msg = NULL;
4425         if (ret) {
4426                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4427                            ret, strerror(-ret));
4428                 count++;
4429                 if (ret == -EALREADY && count == 1) {
4430                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4431                                    "forced leave");
4432                         nl80211_leave_ibss(drv, 0);
4433                         nlmsg_free(msg);
4434                         goto retry;
4435                 }
4436         } else {
4437                 wpa_printf(MSG_DEBUG,
4438                            "nl80211: Join IBSS request sent successfully");
4439         }
4440
4441 fail:
4442         nlmsg_free(msg);
4443         return ret;
4444 }
4445
4446
4447 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4448                                   struct wpa_driver_associate_params *params,
4449                                   struct nl_msg *msg)
4450 {
4451         if (params->bssid) {
4452                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4453                            MAC2STR(params->bssid));
4454                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4455                         return -1;
4456         }
4457
4458         if (params->bssid_hint) {
4459                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4460                            MAC2STR(params->bssid_hint));
4461                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4462                             params->bssid_hint))
4463                         return -1;
4464         }
4465
4466         if (params->freq.freq) {
4467                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4468                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4469                                 params->freq.freq))
4470                         return -1;
4471                 drv->assoc_freq = params->freq.freq;
4472         } else
4473                 drv->assoc_freq = 0;
4474
4475         if (params->freq_hint) {
4476                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4477                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4478                                 params->freq_hint))
4479                         return -1;
4480         }
4481
4482         if (params->bg_scan_period >= 0) {
4483                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4484                            params->bg_scan_period);
4485                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4486                                 params->bg_scan_period))
4487                         return -1;
4488         }
4489
4490         if (params->ssid) {
4491                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4492                                   params->ssid, params->ssid_len);
4493                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4494                             params->ssid))
4495                         return -1;
4496                 if (params->ssid_len > sizeof(drv->ssid))
4497                         return -1;
4498                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4499                 drv->ssid_len = params->ssid_len;
4500         }
4501
4502         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4503         if (params->wpa_ie &&
4504             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4505                 return -1;
4506
4507         if (params->wpa_proto) {
4508                 enum nl80211_wpa_versions ver = 0;
4509
4510                 if (params->wpa_proto & WPA_PROTO_WPA)
4511                         ver |= NL80211_WPA_VERSION_1;
4512                 if (params->wpa_proto & WPA_PROTO_RSN)
4513                         ver |= NL80211_WPA_VERSION_2;
4514
4515                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4516                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4517                         return -1;
4518         }
4519
4520         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4521                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4522                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4523                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4524                                 cipher))
4525                         return -1;
4526         }
4527
4528         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4529             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4530                 /*
4531                  * This is likely to work even though many drivers do not
4532                  * advertise support for operations without GTK.
4533                  */
4534                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4535         } else if (params->group_suite != WPA_CIPHER_NONE) {
4536                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4537                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4538                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4539                         return -1;
4540         }
4541
4542         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4543             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4544             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4545             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4546             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4547             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4548             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4549             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4550             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4551             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4552                 int mgmt = WLAN_AKM_SUITE_PSK;
4553
4554                 switch (params->key_mgmt_suite) {
4555                 case WPA_KEY_MGMT_CCKM:
4556                         mgmt = WLAN_AKM_SUITE_CCKM;
4557                         break;
4558                 case WPA_KEY_MGMT_IEEE8021X:
4559                         mgmt = WLAN_AKM_SUITE_8021X;
4560                         break;
4561                 case WPA_KEY_MGMT_FT_IEEE8021X:
4562                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4563                         break;
4564                 case WPA_KEY_MGMT_FT_PSK:
4565                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4566                         break;
4567                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4568                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4569                         break;
4570                 case WPA_KEY_MGMT_PSK_SHA256:
4571                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4572                         break;
4573                 case WPA_KEY_MGMT_OSEN:
4574                         mgmt = WLAN_AKM_SUITE_OSEN;
4575                         break;
4576                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4577                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4578                         break;
4579                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4580                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4581                         break;
4582                 case WPA_KEY_MGMT_PSK:
4583                 default:
4584                         mgmt = WLAN_AKM_SUITE_PSK;
4585                         break;
4586                 }
4587                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4588                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4589                         return -1;
4590         }
4591
4592         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4593                 return -1;
4594
4595         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4596             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4597                 return -1;
4598
4599         if (params->rrm_used) {
4600                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4601                 if (!(drv_rrm_flags &
4602                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4603                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4604                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4605                         return -1;
4606         }
4607
4608         if (nl80211_ht_vht_overrides(msg, params) < 0)
4609                 return -1;
4610
4611         if (params->p2p)
4612                 wpa_printf(MSG_DEBUG, "  * P2P group");
4613
4614         return 0;
4615 }
4616
4617
4618 static int wpa_driver_nl80211_try_connect(
4619         struct wpa_driver_nl80211_data *drv,
4620         struct wpa_driver_associate_params *params)
4621 {
4622         struct nl_msg *msg;
4623         enum nl80211_auth_type type;
4624         int ret;
4625         int algs;
4626
4627         if (params->req_key_mgmt_offload && params->psk &&
4628             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4629              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4630              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4631                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4632                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4633                 if (ret)
4634                         return ret;
4635         }
4636
4637         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4638         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4639         if (!msg)
4640                 return -1;
4641
4642         ret = nl80211_connect_common(drv, params, msg);
4643         if (ret)
4644                 goto fail;
4645
4646         algs = 0;
4647         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4648                 algs++;
4649         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4650                 algs++;
4651         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4652                 algs++;
4653         if (algs > 1) {
4654                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4655                            "selection");
4656                 goto skip_auth_type;
4657         }
4658
4659         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4660                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4661         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4662                 type = NL80211_AUTHTYPE_SHARED_KEY;
4663         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4664                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4665         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4666                 type = NL80211_AUTHTYPE_FT;
4667         else
4668                 goto fail;
4669
4670         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4671         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4672                 goto fail;
4673
4674 skip_auth_type:
4675         ret = nl80211_set_conn_keys(params, msg);
4676         if (ret)
4677                 goto fail;
4678
4679         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4680         msg = NULL;
4681         if (ret) {
4682                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4683                            "(%s)", ret, strerror(-ret));
4684         } else {
4685                 wpa_printf(MSG_DEBUG,
4686                            "nl80211: Connect request send successfully");
4687         }
4688
4689 fail:
4690         nlmsg_free(msg);
4691         return ret;
4692
4693 }
4694
4695
4696 static int wpa_driver_nl80211_connect(
4697         struct wpa_driver_nl80211_data *drv,
4698         struct wpa_driver_associate_params *params)
4699 {
4700         int ret;
4701
4702         /* Store the connection attempted bssid for future use */
4703         if (params->bssid)
4704                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4705         else
4706                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4707
4708         ret = wpa_driver_nl80211_try_connect(drv, params);
4709         if (ret == -EALREADY) {
4710                 /*
4711                  * cfg80211 does not currently accept new connections if
4712                  * we are already connected. As a workaround, force
4713                  * disconnection and try again.
4714                  */
4715                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4716                            "disconnecting before reassociation "
4717                            "attempt");
4718                 if (wpa_driver_nl80211_disconnect(
4719                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4720                         return -1;
4721                 ret = wpa_driver_nl80211_try_connect(drv, params);
4722         }
4723         return ret;
4724 }
4725
4726
4727 static int wpa_driver_nl80211_associate(
4728         void *priv, struct wpa_driver_associate_params *params)
4729 {
4730         struct i802_bss *bss = priv;
4731         struct wpa_driver_nl80211_data *drv = bss->drv;
4732         int ret = -1;
4733         struct nl_msg *msg;
4734
4735         nl80211_unmask_11b_rates(bss);
4736
4737         if (params->mode == IEEE80211_MODE_AP)
4738                 return wpa_driver_nl80211_ap(drv, params);
4739
4740         if (params->mode == IEEE80211_MODE_IBSS)
4741                 return wpa_driver_nl80211_ibss(drv, params);
4742
4743         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4744                 enum nl80211_iftype nlmode = params->p2p ?
4745                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4746
4747                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4748                         return -1;
4749                 return wpa_driver_nl80211_connect(drv, params);
4750         }
4751
4752         nl80211_mark_disconnected(drv);
4753
4754         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4755                    drv->ifindex);
4756         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4757         if (!msg)
4758                 return -1;
4759
4760         ret = nl80211_connect_common(drv, params, msg);
4761         if (ret)
4762                 goto fail;
4763
4764         if (params->prev_bssid) {
4765                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4766                            MAC2STR(params->prev_bssid));
4767                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4768                             params->prev_bssid))
4769                         goto fail;
4770         }
4771
4772         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4773         msg = NULL;
4774         if (ret) {
4775                 wpa_dbg(drv->ctx, MSG_DEBUG,
4776                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4777                         ret, strerror(-ret));
4778                 nl80211_dump_scan(drv);
4779         } else {
4780                 wpa_printf(MSG_DEBUG,
4781                            "nl80211: Association request send successfully");
4782         }
4783
4784 fail:
4785         nlmsg_free(msg);
4786         return ret;
4787 }
4788
4789
4790 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4791                             int ifindex, enum nl80211_iftype mode)
4792 {
4793         struct nl_msg *msg;
4794         int ret = -ENOBUFS;
4795
4796         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4797                    ifindex, mode, nl80211_iftype_str(mode));
4798
4799         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4800         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4801                 goto fail;
4802
4803         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4804         msg = NULL;
4805         if (!ret)
4806                 return 0;
4807 fail:
4808         nlmsg_free(msg);
4809         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4810                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4811         return ret;
4812 }
4813
4814
4815 static int wpa_driver_nl80211_set_mode_impl(
4816                 struct i802_bss *bss,
4817                 enum nl80211_iftype nlmode,
4818                 struct hostapd_freq_params *desired_freq_params)
4819 {
4820         struct wpa_driver_nl80211_data *drv = bss->drv;
4821         int ret = -1;
4822         int i;
4823         int was_ap = is_ap_interface(drv->nlmode);
4824         int res;
4825         int mode_switch_res;
4826
4827         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4828         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4829                 mode_switch_res = 0;
4830
4831         if (mode_switch_res == 0) {
4832                 drv->nlmode = nlmode;
4833                 ret = 0;
4834                 goto done;
4835         }
4836
4837         if (mode_switch_res == -ENODEV)
4838                 return -1;
4839
4840         if (nlmode == drv->nlmode) {
4841                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4842                            "requested mode - ignore error");
4843                 ret = 0;
4844                 goto done; /* Already in the requested mode */
4845         }
4846
4847         /* mac80211 doesn't allow mode changes while the device is up, so
4848          * take the device down, try to set the mode again, and bring the
4849          * device back up.
4850          */
4851         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4852                    "interface down");
4853         for (i = 0; i < 10; i++) {
4854                 res = i802_set_iface_flags(bss, 0);
4855                 if (res == -EACCES || res == -ENODEV)
4856                         break;
4857                 if (res != 0) {
4858                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4859                                    "interface down");
4860                         os_sleep(0, 100000);
4861                         continue;
4862                 }
4863
4864                 /*
4865                  * Setting the mode will fail for some drivers if the phy is
4866                  * on a frequency that the mode is disallowed in.
4867                  */
4868                 if (desired_freq_params) {
4869                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4870                         if (res) {
4871                                 wpa_printf(MSG_DEBUG,
4872                                            "nl80211: Failed to set frequency on interface");
4873                         }
4874                 }
4875
4876                 /* Try to set the mode again while the interface is down */
4877                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4878                 if (mode_switch_res == -EBUSY) {
4879                         wpa_printf(MSG_DEBUG,
4880                                    "nl80211: Delaying mode set while interface going down");
4881                         os_sleep(0, 100000);
4882                         continue;
4883                 }
4884                 ret = mode_switch_res;
4885                 break;
4886         }
4887
4888         if (!ret) {
4889                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4890                            "interface is down");
4891                 drv->nlmode = nlmode;
4892                 drv->ignore_if_down_event = 1;
4893         }
4894
4895         /* Bring the interface back up */
4896         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4897         if (res != 0) {
4898                 wpa_printf(MSG_DEBUG,
4899                            "nl80211: Failed to set interface up after switching mode");
4900                 ret = -1;
4901         }
4902
4903 done:
4904         if (ret) {
4905                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4906                            "from %d failed", nlmode, drv->nlmode);
4907                 return ret;
4908         }
4909
4910         if (is_p2p_net_interface(nlmode)) {
4911                 wpa_printf(MSG_DEBUG,
4912                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4913                            bss->ifname);
4914                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4915         } else if (drv->disabled_11b_rates) {
4916                 wpa_printf(MSG_DEBUG,
4917                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4918                            bss->ifname);
4919                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4920         }
4921
4922         if (is_ap_interface(nlmode)) {
4923                 nl80211_mgmt_unsubscribe(bss, "start AP");
4924                 /* Setup additional AP mode functionality if needed */
4925                 if (nl80211_setup_ap(bss))
4926                         return -1;
4927         } else if (was_ap) {
4928                 /* Remove additional AP mode functionality */
4929                 nl80211_teardown_ap(bss);
4930         } else {
4931                 nl80211_mgmt_unsubscribe(bss, "mode change");
4932         }
4933
4934         if (is_mesh_interface(nlmode) &&
4935             nl80211_mgmt_subscribe_mesh(bss))
4936                 return -1;
4937
4938         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4939             !is_mesh_interface(nlmode) &&
4940             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4941                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4942                            "frame processing - ignore for now");
4943
4944         return 0;
4945 }
4946
4947
4948 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
4949                                 enum nl80211_iftype nlmode)
4950 {
4951         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
4952 }
4953
4954
4955 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
4956                                             struct hostapd_freq_params *freq)
4957 {
4958         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
4959                                                 freq);
4960 }
4961
4962
4963 static int wpa_driver_nl80211_get_capa(void *priv,
4964                                        struct wpa_driver_capa *capa)
4965 {
4966         struct i802_bss *bss = priv;
4967         struct wpa_driver_nl80211_data *drv = bss->drv;
4968
4969         if (!drv->has_capability)
4970                 return -1;
4971         os_memcpy(capa, &drv->capa, sizeof(*capa));
4972         if (drv->extended_capa && drv->extended_capa_mask) {
4973                 capa->extended_capa = drv->extended_capa;
4974                 capa->extended_capa_mask = drv->extended_capa_mask;
4975                 capa->extended_capa_len = drv->extended_capa_len;
4976         }
4977
4978         return 0;
4979 }
4980
4981
4982 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4983 {
4984         struct i802_bss *bss = priv;
4985         struct wpa_driver_nl80211_data *drv = bss->drv;
4986
4987         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
4988                    bss->ifname, drv->operstate, state,
4989                    state ? "UP" : "DORMANT");
4990         drv->operstate = state;
4991         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
4992                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4993 }
4994
4995
4996 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4997 {
4998         struct i802_bss *bss = priv;
4999         struct wpa_driver_nl80211_data *drv = bss->drv;
5000         struct nl_msg *msg;
5001         struct nl80211_sta_flag_update upd;
5002         int ret;
5003
5004         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5005                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5006                 return 0;
5007         }
5008
5009         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5010                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5011
5012         os_memset(&upd, 0, sizeof(upd));
5013         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5014         if (authorized)
5015                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5016
5017         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5018             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5019             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5020                 nlmsg_free(msg);
5021                 return -ENOBUFS;
5022         }
5023
5024         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5025         if (!ret)
5026                 return 0;
5027         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5028                    ret, strerror(-ret));
5029         return ret;
5030 }
5031
5032
5033 /* Set kernel driver on given frequency (MHz) */
5034 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5035 {
5036         struct i802_bss *bss = priv;
5037         return nl80211_set_channel(bss, freq, 0);
5038 }
5039
5040
5041 static inline int min_int(int a, int b)
5042 {
5043         if (a < b)
5044                 return a;
5045         return b;
5046 }
5047
5048
5049 static int get_key_handler(struct nl_msg *msg, void *arg)
5050 {
5051         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5052         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5053
5054         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5055                   genlmsg_attrlen(gnlh, 0), NULL);
5056
5057         /*
5058          * TODO: validate the key index and mac address!
5059          * Otherwise, there's a race condition as soon as
5060          * the kernel starts sending key notifications.
5061          */
5062
5063         if (tb[NL80211_ATTR_KEY_SEQ])
5064                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5065                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5066         return NL_SKIP;
5067 }
5068
5069
5070 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5071                            int idx, u8 *seq)
5072 {
5073         struct i802_bss *bss = priv;
5074         struct wpa_driver_nl80211_data *drv = bss->drv;
5075         struct nl_msg *msg;
5076
5077         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5078                                   NL80211_CMD_GET_KEY);
5079         if (!msg ||
5080             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5081             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5082                 nlmsg_free(msg);
5083                 return -ENOBUFS;
5084         }
5085
5086         memset(seq, 0, 6);
5087
5088         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5089 }
5090
5091
5092 static int i802_set_rts(void *priv, int rts)
5093 {
5094         struct i802_bss *bss = priv;
5095         struct wpa_driver_nl80211_data *drv = bss->drv;
5096         struct nl_msg *msg;
5097         int ret;
5098         u32 val;
5099
5100         if (rts >= 2347)
5101                 val = (u32) -1;
5102         else
5103                 val = rts;
5104
5105         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5106             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5107                 nlmsg_free(msg);
5108                 return -ENOBUFS;
5109         }
5110
5111         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5112         if (!ret)
5113                 return 0;
5114         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5115                    "%d (%s)", rts, ret, strerror(-ret));
5116         return ret;
5117 }
5118
5119
5120 static int i802_set_frag(void *priv, int frag)
5121 {
5122         struct i802_bss *bss = priv;
5123         struct wpa_driver_nl80211_data *drv = bss->drv;
5124         struct nl_msg *msg;
5125         int ret;
5126         u32 val;
5127
5128         if (frag >= 2346)
5129                 val = (u32) -1;
5130         else
5131                 val = frag;
5132
5133         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5134             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5135                 nlmsg_free(msg);
5136                 return -ENOBUFS;
5137         }
5138
5139         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5140         if (!ret)
5141                 return 0;
5142         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5143                    "%d: %d (%s)", frag, ret, strerror(-ret));
5144         return ret;
5145 }
5146
5147
5148 static int i802_flush(void *priv)
5149 {
5150         struct i802_bss *bss = priv;
5151         struct nl_msg *msg;
5152         int res;
5153
5154         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5155                    bss->ifname);
5156
5157         /*
5158          * XXX: FIX! this needs to flush all VLANs too
5159          */
5160         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5161         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5162         if (res) {
5163                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5164                            "(%s)", res, strerror(-res));
5165         }
5166         return res;
5167 }
5168
5169
5170 static int get_sta_handler(struct nl_msg *msg, void *arg)
5171 {
5172         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5173         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5174         struct hostap_sta_driver_data *data = arg;
5175         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5176         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5177                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5178                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5179                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5180                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5181                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5182                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5183         };
5184
5185         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5186                   genlmsg_attrlen(gnlh, 0), NULL);
5187
5188         /*
5189          * TODO: validate the interface and mac address!
5190          * Otherwise, there's a race condition as soon as
5191          * the kernel starts sending station notifications.
5192          */
5193
5194         if (!tb[NL80211_ATTR_STA_INFO]) {
5195                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5196                 return NL_SKIP;
5197         }
5198         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5199                              tb[NL80211_ATTR_STA_INFO],
5200                              stats_policy)) {
5201                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5202                 return NL_SKIP;
5203         }
5204
5205         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5206                 data->inactive_msec =
5207                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5208         if (stats[NL80211_STA_INFO_RX_BYTES])
5209                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5210         if (stats[NL80211_STA_INFO_TX_BYTES])
5211                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5212         if (stats[NL80211_STA_INFO_RX_PACKETS])
5213                 data->rx_packets =
5214                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5215         if (stats[NL80211_STA_INFO_TX_PACKETS])
5216                 data->tx_packets =
5217                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5218         if (stats[NL80211_STA_INFO_TX_FAILED])
5219                 data->tx_retry_failed =
5220                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5221
5222         return NL_SKIP;
5223 }
5224
5225 static int i802_read_sta_data(struct i802_bss *bss,
5226                               struct hostap_sta_driver_data *data,
5227                               const u8 *addr)
5228 {
5229         struct nl_msg *msg;
5230
5231         os_memset(data, 0, sizeof(*data));
5232
5233         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5234             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5235                 nlmsg_free(msg);
5236                 return -ENOBUFS;
5237         }
5238
5239         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5240 }
5241
5242
5243 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5244                                     int cw_min, int cw_max, int burst_time)
5245 {
5246         struct i802_bss *bss = priv;
5247         struct wpa_driver_nl80211_data *drv = bss->drv;
5248         struct nl_msg *msg;
5249         struct nlattr *txq, *params;
5250
5251         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5252         if (!msg)
5253                 return -1;
5254
5255         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5256         if (!txq)
5257                 goto fail;
5258
5259         /* We are only sending parameters for a single TXQ at a time */
5260         params = nla_nest_start(msg, 1);
5261         if (!params)
5262                 goto fail;
5263
5264         switch (queue) {
5265         case 0:
5266                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5267                         goto fail;
5268                 break;
5269         case 1:
5270                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5271                         goto fail;
5272                 break;
5273         case 2:
5274                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5275                         goto fail;
5276                 break;
5277         case 3:
5278                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5279                         goto fail;
5280                 break;
5281         }
5282         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5283          * 32 usec, so need to convert the value here. */
5284         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5285                         (burst_time * 100 + 16) / 32) ||
5286             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5287             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5288             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5289                 goto fail;
5290
5291         nla_nest_end(msg, params);
5292
5293         nla_nest_end(msg, txq);
5294
5295         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5296                 return 0;
5297         msg = NULL;
5298 fail:
5299         nlmsg_free(msg);
5300         return -1;
5301 }
5302
5303
5304 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5305                              const char *ifname, int vlan_id)
5306 {
5307         struct wpa_driver_nl80211_data *drv = bss->drv;
5308         struct nl_msg *msg;
5309         int ret;
5310
5311         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5312                    ", ifname=%s[%d], vlan_id=%d)",
5313                    bss->ifname, if_nametoindex(bss->ifname),
5314                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5315         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5316             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5317             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5318                 nlmsg_free(msg);
5319                 return -ENOBUFS;
5320         }
5321
5322         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5323         if (ret < 0) {
5324                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5325                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5326                            MAC2STR(addr), ifname, vlan_id, ret,
5327                            strerror(-ret));
5328         }
5329         return ret;
5330 }
5331
5332
5333 static int i802_get_inact_sec(void *priv, const u8 *addr)
5334 {
5335         struct hostap_sta_driver_data data;
5336         int ret;
5337
5338         data.inactive_msec = (unsigned long) -1;
5339         ret = i802_read_sta_data(priv, &data, addr);
5340         if (ret == -ENOENT)
5341                 return -ENOENT;
5342         if (ret || data.inactive_msec == (unsigned long) -1)
5343                 return -1;
5344         return data.inactive_msec / 1000;
5345 }
5346
5347
5348 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5349 {
5350 #if 0
5351         /* TODO */
5352 #endif
5353         return 0;
5354 }
5355
5356
5357 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5358                            int reason)
5359 {
5360         struct i802_bss *bss = priv;
5361         struct wpa_driver_nl80211_data *drv = bss->drv;
5362         struct ieee80211_mgmt mgmt;
5363
5364         if (is_mesh_interface(drv->nlmode))
5365                 return -1;
5366
5367         if (drv->device_ap_sme)
5368                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5369
5370         memset(&mgmt, 0, sizeof(mgmt));
5371         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5372                                           WLAN_FC_STYPE_DEAUTH);
5373         memcpy(mgmt.da, addr, ETH_ALEN);
5374         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5375         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5376         mgmt.u.deauth.reason_code = host_to_le16(reason);
5377         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5378                                             IEEE80211_HDRLEN +
5379                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5380                                             0);
5381 }
5382
5383
5384 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5385                              int reason)
5386 {
5387         struct i802_bss *bss = priv;
5388         struct wpa_driver_nl80211_data *drv = bss->drv;
5389         struct ieee80211_mgmt mgmt;
5390
5391         if (is_mesh_interface(drv->nlmode))
5392                 return -1;
5393
5394         if (drv->device_ap_sme)
5395                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5396
5397         memset(&mgmt, 0, sizeof(mgmt));
5398         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5399                                           WLAN_FC_STYPE_DISASSOC);
5400         memcpy(mgmt.da, addr, ETH_ALEN);
5401         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5402         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5403         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5404         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5405                                             IEEE80211_HDRLEN +
5406                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5407                                             0);
5408 }
5409
5410
5411 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5412 {
5413         char buf[200], *pos, *end;
5414         int i, res;
5415
5416         pos = buf;
5417         end = pos + sizeof(buf);
5418
5419         for (i = 0; i < drv->num_if_indices; i++) {
5420                 if (!drv->if_indices[i])
5421                         continue;
5422                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5423                 if (os_snprintf_error(end - pos, res))
5424                         break;
5425                 pos += res;
5426         }
5427         *pos = '\0';
5428
5429         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5430                    drv->num_if_indices, buf);
5431 }
5432
5433
5434 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5435 {
5436         int i;
5437         int *old;
5438
5439         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5440                    ifidx);
5441         if (have_ifidx(drv, ifidx)) {
5442                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5443                            ifidx);
5444                 return;
5445         }
5446         for (i = 0; i < drv->num_if_indices; i++) {
5447                 if (drv->if_indices[i] == 0) {
5448                         drv->if_indices[i] = ifidx;
5449                         dump_ifidx(drv);
5450                         return;
5451                 }
5452         }
5453
5454         if (drv->if_indices != drv->default_if_indices)
5455                 old = drv->if_indices;
5456         else
5457                 old = NULL;
5458
5459         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5460                                            sizeof(int));
5461         if (!drv->if_indices) {
5462                 if (!old)
5463                         drv->if_indices = drv->default_if_indices;
5464                 else
5465                         drv->if_indices = old;
5466                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5467                            "interfaces");
5468                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5469                 return;
5470         } else if (!old)
5471                 os_memcpy(drv->if_indices, drv->default_if_indices,
5472                           sizeof(drv->default_if_indices));
5473         drv->if_indices[drv->num_if_indices] = ifidx;
5474         drv->num_if_indices++;
5475         dump_ifidx(drv);
5476 }
5477
5478
5479 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5480 {
5481         int i;
5482
5483         for (i = 0; i < drv->num_if_indices; i++) {
5484                 if (drv->if_indices[i] == ifidx) {
5485                         drv->if_indices[i] = 0;
5486                         break;
5487                 }
5488         }
5489         dump_ifidx(drv);
5490 }
5491
5492
5493 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5494 {
5495         int i;
5496
5497         for (i = 0; i < drv->num_if_indices; i++)
5498                 if (drv->if_indices[i] == ifidx)
5499                         return 1;
5500
5501         return 0;
5502 }
5503
5504
5505 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5506                             const char *bridge_ifname, char *ifname_wds)
5507 {
5508         struct i802_bss *bss = priv;
5509         struct wpa_driver_nl80211_data *drv = bss->drv;
5510         char name[IFNAMSIZ + 1];
5511
5512         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5513         if (ifname_wds)
5514                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5515
5516         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5517                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5518         if (val) {
5519                 if (!if_nametoindex(name)) {
5520                         if (nl80211_create_iface(drv, name,
5521                                                  NL80211_IFTYPE_AP_VLAN,
5522                                                  bss->addr, 1, NULL, NULL, 0) <
5523                             0)
5524                                 return -1;
5525                         if (bridge_ifname &&
5526                             linux_br_add_if(drv->global->ioctl_sock,
5527                                             bridge_ifname, name) < 0)
5528                                 return -1;
5529                 }
5530                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5531                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5532                                    "interface %s up", name);
5533                 }
5534                 return i802_set_sta_vlan(priv, addr, name, 0);
5535         } else {
5536                 if (bridge_ifname)
5537                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5538                                         name);
5539
5540                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5541                 nl80211_remove_iface(drv, if_nametoindex(name));
5542                 return 0;
5543         }
5544 }
5545
5546
5547 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5548 {
5549         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5550         struct sockaddr_ll lladdr;
5551         unsigned char buf[3000];
5552         int len;
5553         socklen_t fromlen = sizeof(lladdr);
5554
5555         len = recvfrom(sock, buf, sizeof(buf), 0,
5556                        (struct sockaddr *)&lladdr, &fromlen);
5557         if (len < 0) {
5558                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5559                            strerror(errno));
5560                 return;
5561         }
5562
5563         if (have_ifidx(drv, lladdr.sll_ifindex))
5564                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5565 }
5566
5567
5568 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5569                              struct i802_bss *bss,
5570                              const char *brname, const char *ifname)
5571 {
5572         int br_ifindex;
5573         char in_br[IFNAMSIZ];
5574
5575         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5576         br_ifindex = if_nametoindex(brname);
5577         if (br_ifindex == 0) {
5578                 /*
5579                  * Bridge was configured, but the bridge device does
5580                  * not exist. Try to add it now.
5581                  */
5582                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5583                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5584                                    "bridge interface %s: %s",
5585                                    brname, strerror(errno));
5586                         return -1;
5587                 }
5588                 bss->added_bridge = 1;
5589                 br_ifindex = if_nametoindex(brname);
5590                 add_ifidx(drv, br_ifindex);
5591         }
5592         bss->br_ifindex = br_ifindex;
5593
5594         if (linux_br_get(in_br, ifname) == 0) {
5595                 if (os_strcmp(in_br, brname) == 0)
5596                         return 0; /* already in the bridge */
5597
5598                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5599                            "bridge %s", ifname, in_br);
5600                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5601                     0) {
5602                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5603                                    "remove interface %s from bridge "
5604                                    "%s: %s",
5605                                    ifname, brname, strerror(errno));
5606                         return -1;
5607                 }
5608         }
5609
5610         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5611                    ifname, brname);
5612         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5613                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5614                            "into bridge %s: %s",
5615                            ifname, brname, strerror(errno));
5616                 return -1;
5617         }
5618         bss->added_if_into_bridge = 1;
5619
5620         return 0;
5621 }
5622
5623
5624 static void *i802_init(struct hostapd_data *hapd,
5625                        struct wpa_init_params *params)
5626 {
5627         struct wpa_driver_nl80211_data *drv;
5628         struct i802_bss *bss;
5629         size_t i;
5630         char brname[IFNAMSIZ];
5631         int ifindex, br_ifindex;
5632         int br_added = 0;
5633
5634         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5635                                           params->global_priv, 1,
5636                                           params->bssid, params->driver_params);
5637         if (bss == NULL)
5638                 return NULL;
5639
5640         drv = bss->drv;
5641
5642         if (linux_br_get(brname, params->ifname) == 0) {
5643                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5644                            params->ifname, brname);
5645                 br_ifindex = if_nametoindex(brname);
5646                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5647         } else {
5648                 brname[0] = '\0';
5649                 br_ifindex = 0;
5650         }
5651         bss->br_ifindex = br_ifindex;
5652
5653         for (i = 0; i < params->num_bridge; i++) {
5654                 if (params->bridge[i]) {
5655                         ifindex = if_nametoindex(params->bridge[i]);
5656                         if (ifindex)
5657                                 add_ifidx(drv, ifindex);
5658                         if (ifindex == br_ifindex)
5659                                 br_added = 1;
5660                 }
5661         }
5662
5663         /* start listening for EAPOL on the default AP interface */
5664         add_ifidx(drv, drv->ifindex);
5665
5666         if (params->num_bridge && params->bridge[0]) {
5667                 if (i802_check_bridge(drv, bss, params->bridge[0],
5668                                       params->ifname) < 0)
5669                         goto failed;
5670                 if (os_strcmp(params->bridge[0], brname) != 0)
5671                         br_added = 1;
5672         }
5673
5674         if (!br_added && br_ifindex &&
5675             (params->num_bridge == 0 || !params->bridge[0]))
5676                 add_ifidx(drv, br_ifindex);
5677
5678 #ifdef CONFIG_LIBNL3_ROUTE
5679         if (bss->added_if_into_bridge) {
5680                 drv->rtnl_sk = nl_socket_alloc();
5681                 if (drv->rtnl_sk == NULL) {
5682                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5683                         goto failed;
5684                 }
5685
5686                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5687                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5688                                    strerror(errno));
5689                         goto failed;
5690                 }
5691         }
5692 #endif /* CONFIG_LIBNL3_ROUTE */
5693
5694         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5695         if (drv->eapol_sock < 0) {
5696                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5697                            strerror(errno));
5698                 goto failed;
5699         }
5700
5701         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5702         {
5703                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5704                 goto failed;
5705         }
5706
5707         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5708                                params->own_addr))
5709                 goto failed;
5710         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5711
5712         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5713
5714         return bss;
5715
5716 failed:
5717         wpa_driver_nl80211_deinit(bss);
5718         return NULL;
5719 }
5720
5721
5722 static void i802_deinit(void *priv)
5723 {
5724         struct i802_bss *bss = priv;
5725         wpa_driver_nl80211_deinit(bss);
5726 }
5727
5728
5729 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5730         enum wpa_driver_if_type type)
5731 {
5732         switch (type) {
5733         case WPA_IF_STATION:
5734                 return NL80211_IFTYPE_STATION;
5735         case WPA_IF_P2P_CLIENT:
5736         case WPA_IF_P2P_GROUP:
5737                 return NL80211_IFTYPE_P2P_CLIENT;
5738         case WPA_IF_AP_VLAN:
5739                 return NL80211_IFTYPE_AP_VLAN;
5740         case WPA_IF_AP_BSS:
5741                 return NL80211_IFTYPE_AP;
5742         case WPA_IF_P2P_GO:
5743                 return NL80211_IFTYPE_P2P_GO;
5744         case WPA_IF_P2P_DEVICE:
5745                 return NL80211_IFTYPE_P2P_DEVICE;
5746         case WPA_IF_MESH:
5747                 return NL80211_IFTYPE_MESH_POINT;
5748         }
5749         return -1;
5750 }
5751
5752
5753 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5754
5755 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5756 {
5757         struct wpa_driver_nl80211_data *drv;
5758         dl_list_for_each(drv, &global->interfaces,
5759                          struct wpa_driver_nl80211_data, list) {
5760                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5761                         return 1;
5762         }
5763         return 0;
5764 }
5765
5766
5767 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5768 {
5769         unsigned int idx;
5770
5771         if (!drv->global)
5772                 return -1;
5773
5774         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5775         for (idx = 0; idx < 64; idx++) {
5776                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5777                 new_addr[0] ^= idx << 2;
5778                 if (!nl80211_addr_in_use(drv->global, new_addr))
5779                         break;
5780         }
5781         if (idx == 64)
5782                 return -1;
5783
5784         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5785                    MACSTR, MAC2STR(new_addr));
5786
5787         return 0;
5788 }
5789
5790 #endif /* CONFIG_P2P || CONFIG_MESH */
5791
5792
5793 struct wdev_info {
5794         u64 wdev_id;
5795         int wdev_id_set;
5796         u8 macaddr[ETH_ALEN];
5797 };
5798
5799 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5800 {
5801         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5802         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5803         struct wdev_info *wi = arg;
5804
5805         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5806                   genlmsg_attrlen(gnlh, 0), NULL);
5807         if (tb[NL80211_ATTR_WDEV]) {
5808                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5809                 wi->wdev_id_set = 1;
5810         }
5811
5812         if (tb[NL80211_ATTR_MAC])
5813                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5814                           ETH_ALEN);
5815
5816         return NL_SKIP;
5817 }
5818
5819
5820 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5821                                      const char *ifname, const u8 *addr,
5822                                      void *bss_ctx, void **drv_priv,
5823                                      char *force_ifname, u8 *if_addr,
5824                                      const char *bridge, int use_existing)
5825 {
5826         enum nl80211_iftype nlmode;
5827         struct i802_bss *bss = priv;
5828         struct wpa_driver_nl80211_data *drv = bss->drv;
5829         int ifidx;
5830         int added = 1;
5831
5832         if (addr)
5833                 os_memcpy(if_addr, addr, ETH_ALEN);
5834         nlmode = wpa_driver_nl80211_if_type(type);
5835         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5836                 struct wdev_info p2pdev_info;
5837
5838                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5839                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5840                                              0, nl80211_wdev_handler,
5841                                              &p2pdev_info, use_existing);
5842                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5843                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5844                                    ifname);
5845                         return -1;
5846                 }
5847
5848                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5849                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5850                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5851                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5852                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5853                            ifname,
5854                            (long long unsigned int) p2pdev_info.wdev_id);
5855         } else {
5856                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5857                                              0, NULL, NULL, use_existing);
5858                 if (use_existing && ifidx == -ENFILE) {
5859                         added = 0;
5860                         ifidx = if_nametoindex(ifname);
5861                 } else if (ifidx < 0) {
5862                         return -1;
5863                 }
5864         }
5865
5866         if (!addr) {
5867                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5868                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5869                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5870                                             bss->ifname, if_addr) < 0) {
5871                         if (added)
5872                                 nl80211_remove_iface(drv, ifidx);
5873                         return -1;
5874                 }
5875         }
5876
5877 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5878         if (!addr &&
5879             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5880              type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
5881                 /* Enforce unique P2P Interface Address */
5882                 u8 new_addr[ETH_ALEN];
5883
5884                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5885                                        new_addr) < 0) {
5886                         if (added)
5887                                 nl80211_remove_iface(drv, ifidx);
5888                         return -1;
5889                 }
5890                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5891                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5892                                    "for %s interface", type == WPA_IF_MESH ?
5893                                    "mesh" : "P2P group");
5894                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5895                                 if (added)
5896                                         nl80211_remove_iface(drv, ifidx);
5897                                 return -1;
5898                         }
5899                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5900                                                new_addr) < 0) {
5901                                 if (added)
5902                                         nl80211_remove_iface(drv, ifidx);
5903                                 return -1;
5904                         }
5905                 }
5906                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5907         }
5908 #endif /* CONFIG_P2P || CONFIG_MESH */
5909
5910         if (type == WPA_IF_AP_BSS) {
5911                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5912                 if (new_bss == NULL) {
5913                         if (added)
5914                                 nl80211_remove_iface(drv, ifidx);
5915                         return -1;
5916                 }
5917
5918                 if (bridge &&
5919                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5920                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5921                                    "interface %s to a bridge %s",
5922                                    ifname, bridge);
5923                         if (added)
5924                                 nl80211_remove_iface(drv, ifidx);
5925                         os_free(new_bss);
5926                         return -1;
5927                 }
5928
5929                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5930                 {
5931                         if (added)
5932                                 nl80211_remove_iface(drv, ifidx);
5933                         os_free(new_bss);
5934                         return -1;
5935                 }
5936                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5937                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5938                 new_bss->ifindex = ifidx;
5939                 new_bss->drv = drv;
5940                 new_bss->next = drv->first_bss->next;
5941                 new_bss->freq = drv->first_bss->freq;
5942                 new_bss->ctx = bss_ctx;
5943                 new_bss->added_if = added;
5944                 drv->first_bss->next = new_bss;
5945                 if (drv_priv)
5946                         *drv_priv = new_bss;
5947                 nl80211_init_bss(new_bss);
5948
5949                 /* Subscribe management frames for this WPA_IF_AP_BSS */
5950                 if (nl80211_setup_ap(new_bss))
5951                         return -1;
5952         }
5953
5954         if (drv->global)
5955                 drv->global->if_add_ifindex = ifidx;
5956
5957         /*
5958          * Some virtual interfaces need to process EAPOL packets and events on
5959          * the parent interface. This is used mainly with hostapd.
5960          */
5961         if (ifidx > 0 &&
5962             (drv->hostapd ||
5963              nlmode == NL80211_IFTYPE_AP_VLAN ||
5964              nlmode == NL80211_IFTYPE_WDS ||
5965              nlmode == NL80211_IFTYPE_MONITOR))
5966                 add_ifidx(drv, ifidx);
5967
5968         return 0;
5969 }
5970
5971
5972 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
5973                                         enum wpa_driver_if_type type,
5974                                         const char *ifname)
5975 {
5976         struct wpa_driver_nl80211_data *drv = bss->drv;
5977         int ifindex = if_nametoindex(ifname);
5978
5979         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
5980                    __func__, type, ifname, ifindex, bss->added_if);
5981         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
5982                 nl80211_remove_iface(drv, ifindex);
5983         else if (ifindex > 0 && !bss->added_if) {
5984                 struct wpa_driver_nl80211_data *drv2;
5985                 dl_list_for_each(drv2, &drv->global->interfaces,
5986                                  struct wpa_driver_nl80211_data, list)
5987                         del_ifidx(drv2, ifindex);
5988         }
5989
5990         if (type != WPA_IF_AP_BSS)
5991                 return 0;
5992
5993         if (bss->added_if_into_bridge) {
5994                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
5995                                     bss->ifname) < 0)
5996                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5997                                    "interface %s from bridge %s: %s",
5998                                    bss->ifname, bss->brname, strerror(errno));
5999         }
6000         if (bss->added_bridge) {
6001                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6002                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6003                                    "bridge %s: %s",
6004                                    bss->brname, strerror(errno));
6005         }
6006
6007         if (bss != drv->first_bss) {
6008                 struct i802_bss *tbss;
6009
6010                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6011                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6012                         if (tbss->next == bss) {
6013                                 tbss->next = bss->next;
6014                                 /* Unsubscribe management frames */
6015                                 nl80211_teardown_ap(bss);
6016                                 nl80211_destroy_bss(bss);
6017                                 if (!bss->added_if)
6018                                         i802_set_iface_flags(bss, 0);
6019                                 os_free(bss);
6020                                 bss = NULL;
6021                                 break;
6022                         }
6023                 }
6024                 if (bss)
6025                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6026                                    "BSS %p in the list", __func__, bss);
6027         } else {
6028                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6029                 nl80211_teardown_ap(bss);
6030                 if (!bss->added_if && !drv->first_bss->next)
6031                         wpa_driver_nl80211_del_beacon(drv);
6032                 nl80211_destroy_bss(bss);
6033                 if (!bss->added_if)
6034                         i802_set_iface_flags(bss, 0);
6035                 if (drv->first_bss->next) {
6036                         drv->first_bss = drv->first_bss->next;
6037                         drv->ctx = drv->first_bss->ctx;
6038                         os_free(bss);
6039                 } else {
6040                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6041                 }
6042         }
6043
6044         return 0;
6045 }
6046
6047
6048 static int cookie_handler(struct nl_msg *msg, void *arg)
6049 {
6050         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6051         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6052         u64 *cookie = arg;
6053         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6054                   genlmsg_attrlen(gnlh, 0), NULL);
6055         if (tb[NL80211_ATTR_COOKIE])
6056                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6057         return NL_SKIP;
6058 }
6059
6060
6061 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6062                                   unsigned int freq, unsigned int wait,
6063                                   const u8 *buf, size_t buf_len,
6064                                   u64 *cookie_out, int no_cck, int no_ack,
6065                                   int offchanok)
6066 {
6067         struct wpa_driver_nl80211_data *drv = bss->drv;
6068         struct nl_msg *msg;
6069         u64 cookie;
6070         int ret = -1;
6071
6072         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6073                    "no_ack=%d offchanok=%d",
6074                    freq, wait, no_cck, no_ack, offchanok);
6075         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6076
6077         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6078             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6079             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6080             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6081                            drv->test_use_roc_tx) &&
6082              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6083             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6084             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6085             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6086                 goto fail;
6087
6088         cookie = 0;
6089         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6090         msg = NULL;
6091         if (ret) {
6092                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6093                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6094                            freq, wait);
6095         } else {
6096                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6097                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6098                            (long long unsigned int) cookie);
6099
6100                 if (cookie_out)
6101                         *cookie_out = no_ack ? (u64) -1 : cookie;
6102         }
6103
6104 fail:
6105         nlmsg_free(msg);
6106         return ret;
6107 }
6108
6109
6110 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6111                                           unsigned int freq,
6112                                           unsigned int wait_time,
6113                                           const u8 *dst, const u8 *src,
6114                                           const u8 *bssid,
6115                                           const u8 *data, size_t data_len,
6116                                           int no_cck)
6117 {
6118         struct wpa_driver_nl80211_data *drv = bss->drv;
6119         int ret = -1;
6120         u8 *buf;
6121         struct ieee80211_hdr *hdr;
6122
6123         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6124                    "freq=%u MHz wait=%d ms no_cck=%d)",
6125                    drv->ifindex, freq, wait_time, no_cck);
6126
6127         buf = os_zalloc(24 + data_len);
6128         if (buf == NULL)
6129                 return ret;
6130         os_memcpy(buf + 24, data, data_len);
6131         hdr = (struct ieee80211_hdr *) buf;
6132         hdr->frame_control =
6133                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6134         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6135         os_memcpy(hdr->addr2, src, ETH_ALEN);
6136         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6137
6138         if (is_ap_interface(drv->nlmode) &&
6139             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6140              (int) freq == bss->freq || drv->device_ap_sme ||
6141              !drv->use_monitor))
6142                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6143                                                    0, freq, no_cck, 1,
6144                                                    wait_time);
6145         else
6146                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6147                                              24 + data_len,
6148                                              &drv->send_action_cookie,
6149                                              no_cck, 0, 1);
6150
6151         os_free(buf);
6152         return ret;
6153 }
6154
6155
6156 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6157 {
6158         struct i802_bss *bss = priv;
6159         struct wpa_driver_nl80211_data *drv = bss->drv;
6160         struct nl_msg *msg;
6161         int ret;
6162
6163         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6164                    (long long unsigned int) drv->send_action_cookie);
6165         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6166             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6167                 nlmsg_free(msg);
6168                 return;
6169         }
6170
6171         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6172         if (ret)
6173                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6174                            "(%s)", ret, strerror(-ret));
6175 }
6176
6177
6178 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6179                                                 unsigned int duration)
6180 {
6181         struct i802_bss *bss = priv;
6182         struct wpa_driver_nl80211_data *drv = bss->drv;
6183         struct nl_msg *msg;
6184         int ret;
6185         u64 cookie;
6186
6187         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6188             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6189             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6190                 nlmsg_free(msg);
6191                 return -1;
6192         }
6193
6194         cookie = 0;
6195         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6196         if (ret == 0) {
6197                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6198                            "0x%llx for freq=%u MHz duration=%u",
6199                            (long long unsigned int) cookie, freq, duration);
6200                 drv->remain_on_chan_cookie = cookie;
6201                 drv->pending_remain_on_chan = 1;
6202                 return 0;
6203         }
6204         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6205                    "(freq=%d duration=%u): %d (%s)",
6206                    freq, duration, ret, strerror(-ret));
6207         return -1;
6208 }
6209
6210
6211 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6212 {
6213         struct i802_bss *bss = priv;
6214         struct wpa_driver_nl80211_data *drv = bss->drv;
6215         struct nl_msg *msg;
6216         int ret;
6217
6218         if (!drv->pending_remain_on_chan) {
6219                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6220                            "to cancel");
6221                 return -1;
6222         }
6223
6224         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6225                    "0x%llx",
6226                    (long long unsigned int) drv->remain_on_chan_cookie);
6227
6228         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6229         if (!msg ||
6230             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6231                 nlmsg_free(msg);
6232                 return -1;
6233         }
6234
6235         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6236         if (ret == 0)
6237                 return 0;
6238         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6239                    "%d (%s)", ret, strerror(-ret));
6240         return -1;
6241 }
6242
6243
6244 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6245 {
6246         struct wpa_driver_nl80211_data *drv = bss->drv;
6247
6248         if (!report) {
6249                 if (bss->nl_preq && drv->device_ap_sme &&
6250                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6251                     !bss->static_ap) {
6252                         /*
6253                          * Do not disable Probe Request reporting that was
6254                          * enabled in nl80211_setup_ap().
6255                          */
6256                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6257                                    "Probe Request reporting nl_preq=%p while "
6258                                    "in AP mode", bss->nl_preq);
6259                 } else if (bss->nl_preq) {
6260                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6261                                    "reporting nl_preq=%p", bss->nl_preq);
6262                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6263                 }
6264                 return 0;
6265         }
6266
6267         if (bss->nl_preq) {
6268                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6269                            "already on! nl_preq=%p", bss->nl_preq);
6270                 return 0;
6271         }
6272
6273         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6274         if (bss->nl_preq == NULL)
6275                 return -1;
6276         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6277                    "reporting nl_preq=%p", bss->nl_preq);
6278
6279         if (nl80211_register_frame(bss, bss->nl_preq,
6280                                    (WLAN_FC_TYPE_MGMT << 2) |
6281                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6282                                    NULL, 0) < 0)
6283                 goto out_err;
6284
6285         nl80211_register_eloop_read(&bss->nl_preq,
6286                                     wpa_driver_nl80211_event_receive,
6287                                     bss->nl_cb);
6288
6289         return 0;
6290
6291  out_err:
6292         nl_destroy_handles(&bss->nl_preq);
6293         return -1;
6294 }
6295
6296
6297 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6298                                      int ifindex, int disabled)
6299 {
6300         struct nl_msg *msg;
6301         struct nlattr *bands, *band;
6302         int ret;
6303
6304         wpa_printf(MSG_DEBUG,
6305                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6306                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6307                    "no NL80211_TXRATE_LEGACY constraint");
6308
6309         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6310                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6311         if (!msg)
6312                 return -1;
6313
6314         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6315         if (!bands)
6316                 goto fail;
6317
6318         /*
6319          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6320          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6321          * rates. All 5 GHz rates are left enabled.
6322          */
6323         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6324         if (!band ||
6325             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6326                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6327                 goto fail;
6328         nla_nest_end(msg, band);
6329
6330         nla_nest_end(msg, bands);
6331
6332         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6333         if (ret) {
6334                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6335                            "(%s)", ret, strerror(-ret));
6336         } else
6337                 drv->disabled_11b_rates = disabled;
6338
6339         return ret;
6340
6341 fail:
6342         nlmsg_free(msg);
6343         return -1;
6344 }
6345
6346
6347 static int wpa_driver_nl80211_deinit_ap(void *priv)
6348 {
6349         struct i802_bss *bss = priv;
6350         struct wpa_driver_nl80211_data *drv = bss->drv;
6351         if (!is_ap_interface(drv->nlmode))
6352                 return -1;
6353         wpa_driver_nl80211_del_beacon(drv);
6354         bss->beacon_set = 0;
6355
6356         /*
6357          * If the P2P GO interface was dynamically added, then it is
6358          * possible that the interface change to station is not possible.
6359          */
6360         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6361                 return 0;
6362
6363         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6364 }
6365
6366
6367 static int wpa_driver_nl80211_stop_ap(void *priv)
6368 {
6369         struct i802_bss *bss = priv;
6370         struct wpa_driver_nl80211_data *drv = bss->drv;
6371         if (!is_ap_interface(drv->nlmode))
6372                 return -1;
6373         wpa_driver_nl80211_del_beacon(drv);
6374         bss->beacon_set = 0;
6375         return 0;
6376 }
6377
6378
6379 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6380 {
6381         struct i802_bss *bss = priv;
6382         struct wpa_driver_nl80211_data *drv = bss->drv;
6383         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6384                 return -1;
6385
6386         /*
6387          * If the P2P Client interface was dynamically added, then it is
6388          * possible that the interface change to station is not possible.
6389          */
6390         if (bss->if_dynamic)
6391                 return 0;
6392
6393         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6394 }
6395
6396
6397 static void wpa_driver_nl80211_resume(void *priv)
6398 {
6399         struct i802_bss *bss = priv;
6400
6401         if (i802_set_iface_flags(bss, 1))
6402                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6403 }
6404
6405
6406 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6407 {
6408         struct i802_bss *bss = priv;
6409         struct wpa_driver_nl80211_data *drv = bss->drv;
6410         struct nl_msg *msg;
6411         struct nlattr *cqm;
6412
6413         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6414                    "hysteresis=%d", threshold, hysteresis);
6415
6416         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6417             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6418             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6419             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6420                 nlmsg_free(msg);
6421                 return -1;
6422         }
6423         nla_nest_end(msg, cqm);
6424
6425         return send_and_recv_msgs(drv, msg, NULL, NULL);
6426 }
6427
6428
6429 static int get_channel_width(struct nl_msg *msg, void *arg)
6430 {
6431         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6432         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6433         struct wpa_signal_info *sig_change = arg;
6434
6435         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6436                   genlmsg_attrlen(gnlh, 0), NULL);
6437
6438         sig_change->center_frq1 = -1;
6439         sig_change->center_frq2 = -1;
6440         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6441
6442         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6443                 sig_change->chanwidth = convert2width(
6444                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6445                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6446                         sig_change->center_frq1 =
6447                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6448                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6449                         sig_change->center_frq2 =
6450                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6451         }
6452
6453         return NL_SKIP;
6454 }
6455
6456
6457 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6458                                      struct wpa_signal_info *sig)
6459 {
6460         struct nl_msg *msg;
6461
6462         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6463         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6464 }
6465
6466
6467 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6468 {
6469         struct i802_bss *bss = priv;
6470         struct wpa_driver_nl80211_data *drv = bss->drv;
6471         int res;
6472
6473         os_memset(si, 0, sizeof(*si));
6474         res = nl80211_get_link_signal(drv, si);
6475         if (res != 0)
6476                 return res;
6477
6478         res = nl80211_get_channel_width(drv, si);
6479         if (res != 0)
6480                 return res;
6481
6482         return nl80211_get_link_noise(drv, si);
6483 }
6484
6485
6486 static int wpa_driver_nl80211_shared_freq(void *priv)
6487 {
6488         struct i802_bss *bss = priv;
6489         struct wpa_driver_nl80211_data *drv = bss->drv;
6490         struct wpa_driver_nl80211_data *driver;
6491         int freq = 0;
6492
6493         /*
6494          * If the same PHY is in connected state with some other interface,
6495          * then retrieve the assoc freq.
6496          */
6497         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
6498                    drv->phyname);
6499
6500         dl_list_for_each(driver, &drv->global->interfaces,
6501                          struct wpa_driver_nl80211_data, list) {
6502                 if (drv == driver ||
6503                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
6504                     !driver->associated)
6505                         continue;
6506
6507                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
6508                            MACSTR,
6509                            driver->phyname, driver->first_bss->ifname,
6510                            MAC2STR(driver->first_bss->addr));
6511                 if (is_ap_interface(driver->nlmode))
6512                         freq = driver->first_bss->freq;
6513                 else
6514                         freq = nl80211_get_assoc_freq(driver);
6515                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
6516                            drv->phyname, freq);
6517         }
6518
6519         if (!freq)
6520                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
6521                            "PHY (%s) in associated state", drv->phyname);
6522
6523         return freq;
6524 }
6525
6526
6527 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6528                               int encrypt)
6529 {
6530         struct i802_bss *bss = priv;
6531         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6532                                              0, 0, 0, 0);
6533 }
6534
6535
6536 static int nl80211_set_param(void *priv, const char *param)
6537 {
6538         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6539         if (param == NULL)
6540                 return 0;
6541
6542 #ifdef CONFIG_P2P
6543         if (os_strstr(param, "use_p2p_group_interface=1")) {
6544                 struct i802_bss *bss = priv;
6545                 struct wpa_driver_nl80211_data *drv = bss->drv;
6546
6547                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6548                            "interface");
6549                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6550                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6551         }
6552 #endif /* CONFIG_P2P */
6553
6554         if (os_strstr(param, "use_monitor=1")) {
6555                 struct i802_bss *bss = priv;
6556                 struct wpa_driver_nl80211_data *drv = bss->drv;
6557                 drv->use_monitor = 1;
6558         }
6559
6560         if (os_strstr(param, "force_connect_cmd=1")) {
6561                 struct i802_bss *bss = priv;
6562                 struct wpa_driver_nl80211_data *drv = bss->drv;
6563                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6564                 drv->force_connect_cmd = 1;
6565         }
6566
6567         if (os_strstr(param, "no_offchannel_tx=1")) {
6568                 struct i802_bss *bss = priv;
6569                 struct wpa_driver_nl80211_data *drv = bss->drv;
6570                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6571                 drv->test_use_roc_tx = 1;
6572         }
6573
6574         return 0;
6575 }
6576
6577
6578 static void * nl80211_global_init(void)
6579 {
6580         struct nl80211_global *global;
6581         struct netlink_config *cfg;
6582
6583         global = os_zalloc(sizeof(*global));
6584         if (global == NULL)
6585                 return NULL;
6586         global->ioctl_sock = -1;
6587         dl_list_init(&global->interfaces);
6588         global->if_add_ifindex = -1;
6589
6590         cfg = os_zalloc(sizeof(*cfg));
6591         if (cfg == NULL)
6592                 goto err;
6593
6594         cfg->ctx = global;
6595         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6596         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6597         global->netlink = netlink_init(cfg);
6598         if (global->netlink == NULL) {
6599                 os_free(cfg);
6600                 goto err;
6601         }
6602
6603         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6604                 goto err;
6605
6606         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6607         if (global->ioctl_sock < 0) {
6608                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6609                            strerror(errno));
6610                 goto err;
6611         }
6612
6613         return global;
6614
6615 err:
6616         nl80211_global_deinit(global);
6617         return NULL;
6618 }
6619
6620
6621 static void nl80211_global_deinit(void *priv)
6622 {
6623         struct nl80211_global *global = priv;
6624         if (global == NULL)
6625                 return;
6626         if (!dl_list_empty(&global->interfaces)) {
6627                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6628                            "nl80211_global_deinit",
6629                            dl_list_len(&global->interfaces));
6630         }
6631
6632         if (global->netlink)
6633                 netlink_deinit(global->netlink);
6634
6635         nl_destroy_handles(&global->nl);
6636
6637         if (global->nl_event)
6638                 nl80211_destroy_eloop_handle(&global->nl_event);
6639
6640         nl_cb_put(global->nl_cb);
6641
6642         if (global->ioctl_sock >= 0)
6643                 close(global->ioctl_sock);
6644
6645         os_free(global);
6646 }
6647
6648
6649 static const char * nl80211_get_radio_name(void *priv)
6650 {
6651         struct i802_bss *bss = priv;
6652         struct wpa_driver_nl80211_data *drv = bss->drv;
6653         return drv->phyname;
6654 }
6655
6656
6657 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6658                          const u8 *pmkid)
6659 {
6660         struct nl_msg *msg;
6661
6662         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6663             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6664             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6665                 nlmsg_free(msg);
6666                 return -ENOBUFS;
6667         }
6668
6669         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6670 }
6671
6672
6673 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6674 {
6675         struct i802_bss *bss = priv;
6676         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6677         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6678 }
6679
6680
6681 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6682 {
6683         struct i802_bss *bss = priv;
6684         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6685                    MAC2STR(bssid));
6686         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6687 }
6688
6689
6690 static int nl80211_flush_pmkid(void *priv)
6691 {
6692         struct i802_bss *bss = priv;
6693         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6694         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6695 }
6696
6697
6698 static void clean_survey_results(struct survey_results *survey_results)
6699 {
6700         struct freq_survey *survey, *tmp;
6701
6702         if (dl_list_empty(&survey_results->survey_list))
6703                 return;
6704
6705         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6706                               struct freq_survey, list) {
6707                 dl_list_del(&survey->list);
6708                 os_free(survey);
6709         }
6710 }
6711
6712
6713 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6714                        struct dl_list *survey_list)
6715 {
6716         struct freq_survey *survey;
6717
6718         survey = os_zalloc(sizeof(struct freq_survey));
6719         if  (!survey)
6720                 return;
6721
6722         survey->ifidx = ifidx;
6723         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6724         survey->filled = 0;
6725
6726         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6727                 survey->nf = (int8_t)
6728                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6729                 survey->filled |= SURVEY_HAS_NF;
6730         }
6731
6732         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6733                 survey->channel_time =
6734                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6735                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6736         }
6737
6738         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6739                 survey->channel_time_busy =
6740                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6741                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6742         }
6743
6744         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6745                 survey->channel_time_rx =
6746                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6747                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6748         }
6749
6750         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6751                 survey->channel_time_tx =
6752                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6753                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6754         }
6755
6756         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)",
6757                    survey->freq,
6758                    survey->nf,
6759                    (unsigned long int) survey->channel_time,
6760                    (unsigned long int) survey->channel_time_busy,
6761                    (unsigned long int) survey->channel_time_tx,
6762                    (unsigned long int) survey->channel_time_rx,
6763                    survey->filled);
6764
6765         dl_list_add_tail(survey_list, &survey->list);
6766 }
6767
6768
6769 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6770                            unsigned int freq_filter)
6771 {
6772         if (!freq_filter)
6773                 return 1;
6774
6775         return freq_filter == surveyed_freq;
6776 }
6777
6778
6779 static int survey_handler(struct nl_msg *msg, void *arg)
6780 {
6781         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6782         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6783         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6784         struct survey_results *survey_results;
6785         u32 surveyed_freq = 0;
6786         u32 ifidx;
6787
6788         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6789                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6790                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6791         };
6792
6793         survey_results = (struct survey_results *) arg;
6794
6795         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6796                   genlmsg_attrlen(gnlh, 0), NULL);
6797
6798         if (!tb[NL80211_ATTR_IFINDEX])
6799                 return NL_SKIP;
6800
6801         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6802
6803         if (!tb[NL80211_ATTR_SURVEY_INFO])
6804                 return NL_SKIP;
6805
6806         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6807                              tb[NL80211_ATTR_SURVEY_INFO],
6808                              survey_policy))
6809                 return NL_SKIP;
6810
6811         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6812                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6813                 return NL_SKIP;
6814         }
6815
6816         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6817
6818         if (!check_survey_ok(sinfo, surveyed_freq,
6819                              survey_results->freq_filter))
6820                 return NL_SKIP;
6821
6822         if (survey_results->freq_filter &&
6823             survey_results->freq_filter != surveyed_freq) {
6824                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6825                            surveyed_freq);
6826                 return NL_SKIP;
6827         }
6828
6829         add_survey(sinfo, ifidx, &survey_results->survey_list);
6830
6831         return NL_SKIP;
6832 }
6833
6834
6835 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6836 {
6837         struct i802_bss *bss = priv;
6838         struct wpa_driver_nl80211_data *drv = bss->drv;
6839         struct nl_msg *msg;
6840         int err;
6841         union wpa_event_data data;
6842         struct survey_results *survey_results;
6843
6844         os_memset(&data, 0, sizeof(data));
6845         survey_results = &data.survey_results;
6846
6847         dl_list_init(&survey_results->survey_list);
6848
6849         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6850         if (!msg)
6851                 return -ENOBUFS;
6852
6853         if (freq)
6854                 data.survey_results.freq_filter = freq;
6855
6856         do {
6857                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6858                 err = send_and_recv_msgs(drv, msg, survey_handler,
6859                                          survey_results);
6860         } while (err > 0);
6861
6862         if (err)
6863                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6864         else
6865                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6866
6867         clean_survey_results(survey_results);
6868         return err;
6869 }
6870
6871
6872 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
6873                                    const u8 *kck, size_t kck_len,
6874                                    const u8 *replay_ctr)
6875 {
6876         struct i802_bss *bss = priv;
6877         struct wpa_driver_nl80211_data *drv = bss->drv;
6878         struct nlattr *replay_nested;
6879         struct nl_msg *msg;
6880         int ret;
6881
6882         if (!drv->set_rekey_offload)
6883                 return;
6884
6885         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6886         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6887             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6888             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
6889             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
6890             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6891                     replay_ctr)) {
6892                 nl80211_nlmsg_clear(msg);
6893                 nlmsg_free(msg);
6894                 return;
6895         }
6896
6897         nla_nest_end(msg, replay_nested);
6898
6899         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6900         if (ret == -EOPNOTSUPP) {
6901                 wpa_printf(MSG_DEBUG,
6902                            "nl80211: Driver does not support rekey offload");
6903                 drv->set_rekey_offload = 0;
6904         }
6905 }
6906
6907
6908 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6909                                     const u8 *addr, int qos)
6910 {
6911         /* send data frame to poll STA and check whether
6912          * this frame is ACKed */
6913         struct {
6914                 struct ieee80211_hdr hdr;
6915                 u16 qos_ctl;
6916         } STRUCT_PACKED nulldata;
6917         size_t size;
6918
6919         /* Send data frame to poll STA and check whether this frame is ACKed */
6920
6921         os_memset(&nulldata, 0, sizeof(nulldata));
6922
6923         if (qos) {
6924                 nulldata.hdr.frame_control =
6925                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6926                                      WLAN_FC_STYPE_QOS_NULL);
6927                 size = sizeof(nulldata);
6928         } else {
6929                 nulldata.hdr.frame_control =
6930                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6931                                      WLAN_FC_STYPE_NULLFUNC);
6932                 size = sizeof(struct ieee80211_hdr);
6933         }
6934
6935         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6936         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6937         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6938         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6939
6940         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6941                                          0, 0) < 0)
6942                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6943                            "send poll frame");
6944 }
6945
6946 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6947                                 int qos)
6948 {
6949         struct i802_bss *bss = priv;
6950         struct wpa_driver_nl80211_data *drv = bss->drv;
6951         struct nl_msg *msg;
6952         int ret;
6953
6954         if (!drv->poll_command_supported) {
6955                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6956                 return;
6957         }
6958
6959         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6960             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6961                 nlmsg_free(msg);
6962                 return;
6963         }
6964
6965         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6966         if (ret < 0) {
6967                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
6968                            MACSTR " failed: ret=%d (%s)",
6969                            MAC2STR(addr), ret, strerror(-ret));
6970         }
6971 }
6972
6973
6974 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
6975 {
6976         struct nl_msg *msg;
6977
6978         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
6979             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
6980                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
6981                 nlmsg_free(msg);
6982                 return -ENOBUFS;
6983         }
6984         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6985 }
6986
6987
6988 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
6989                                      int ctwindow)
6990 {
6991         struct i802_bss *bss = priv;
6992
6993         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
6994                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
6995
6996         if (opp_ps != -1 || ctwindow != -1) {
6997 #ifdef ANDROID_P2P
6998                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
6999 #else /* ANDROID_P2P */
7000                 return -1; /* Not yet supported */
7001 #endif /* ANDROID_P2P */
7002         }
7003
7004         if (legacy_ps == -1)
7005                 return 0;
7006         if (legacy_ps != 0 && legacy_ps != 1)
7007                 return -1; /* Not yet supported */
7008
7009         return nl80211_set_power_save(bss, legacy_ps);
7010 }
7011
7012
7013 static int nl80211_start_radar_detection(void *priv,
7014                                          struct hostapd_freq_params *freq)
7015 {
7016         struct i802_bss *bss = priv;
7017         struct wpa_driver_nl80211_data *drv = bss->drv;
7018         struct nl_msg *msg;
7019         int ret;
7020
7021         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)",
7022                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7023                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7024
7025         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7026                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7027                            "detection");
7028                 return -1;
7029         }
7030
7031         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7032             nl80211_put_freq_params(msg, freq) < 0) {
7033                 nlmsg_free(msg);
7034                 return -1;
7035         }
7036
7037         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7038         if (ret == 0)
7039                 return 0;
7040         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7041                    "%d (%s)", ret, strerror(-ret));
7042         return -1;
7043 }
7044
7045 #ifdef CONFIG_TDLS
7046
7047 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7048                                   u8 dialog_token, u16 status_code,
7049                                   u32 peer_capab, int initiator, const u8 *buf,
7050                                   size_t len)
7051 {
7052         struct i802_bss *bss = priv;
7053         struct wpa_driver_nl80211_data *drv = bss->drv;
7054         struct nl_msg *msg;
7055
7056         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7057                 return -EOPNOTSUPP;
7058
7059         if (!dst)
7060                 return -EINVAL;
7061
7062         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7063             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7064             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7065             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7066             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7067                 goto fail;
7068         if (peer_capab) {
7069                 /*
7070                  * The internal enum tdls_peer_capability definition is
7071                  * currently identical with the nl80211 enum
7072                  * nl80211_tdls_peer_capability, so no conversion is needed
7073                  * here.
7074                  */
7075                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7076                                 peer_capab))
7077                         goto fail;
7078         }
7079         if ((initiator &&
7080              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7081             nla_put(msg, NL80211_ATTR_IE, len, buf))
7082                 goto fail;
7083
7084         return send_and_recv_msgs(drv, msg, NULL, NULL);
7085
7086 fail:
7087         nlmsg_free(msg);
7088         return -ENOBUFS;
7089 }
7090
7091
7092 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7093 {
7094         struct i802_bss *bss = priv;
7095         struct wpa_driver_nl80211_data *drv = bss->drv;
7096         struct nl_msg *msg;
7097         enum nl80211_tdls_operation nl80211_oper;
7098
7099         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7100                 return -EOPNOTSUPP;
7101
7102         switch (oper) {
7103         case TDLS_DISCOVERY_REQ:
7104                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7105                 break;
7106         case TDLS_SETUP:
7107                 nl80211_oper = NL80211_TDLS_SETUP;
7108                 break;
7109         case TDLS_TEARDOWN:
7110                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7111                 break;
7112         case TDLS_ENABLE_LINK:
7113                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7114                 break;
7115         case TDLS_DISABLE_LINK:
7116                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7117                 break;
7118         case TDLS_ENABLE:
7119                 return 0;
7120         case TDLS_DISABLE:
7121                 return 0;
7122         default:
7123                 return -EINVAL;
7124         }
7125
7126         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7127             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7128             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7129                 nlmsg_free(msg);
7130                 return -ENOBUFS;
7131         }
7132
7133         return send_and_recv_msgs(drv, msg, NULL, NULL);
7134 }
7135
7136
7137 static int
7138 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7139                                    const struct hostapd_freq_params *params)
7140 {
7141         struct i802_bss *bss = priv;
7142         struct wpa_driver_nl80211_data *drv = bss->drv;
7143         struct nl_msg *msg;
7144         int ret = -ENOBUFS;
7145
7146         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7147             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7148                 return -EOPNOTSUPP;
7149
7150         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7151                    " oper_class=%u freq=%u",
7152                    MAC2STR(addr), oper_class, params->freq);
7153         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7154         if (!msg ||
7155             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7156             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7157             (ret = nl80211_put_freq_params(msg, params))) {
7158                 nlmsg_free(msg);
7159                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7160                 return ret;
7161         }
7162
7163         return send_and_recv_msgs(drv, msg, NULL, NULL);
7164 }
7165
7166
7167 static int
7168 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7169 {
7170         struct i802_bss *bss = priv;
7171         struct wpa_driver_nl80211_data *drv = bss->drv;
7172         struct nl_msg *msg;
7173
7174         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7175             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7176                 return -EOPNOTSUPP;
7177
7178         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7179                    MAC2STR(addr));
7180         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7181         if (!msg ||
7182             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7183                 nlmsg_free(msg);
7184                 wpa_printf(MSG_DEBUG,
7185                            "nl80211: Could not build TDLS cancel chan switch");
7186                 return -ENOBUFS;
7187         }
7188
7189         return send_and_recv_msgs(drv, msg, NULL, NULL);
7190 }
7191
7192 #endif /* CONFIG TDLS */
7193
7194
7195 static int driver_nl80211_set_key(const char *ifname, void *priv,
7196                                   enum wpa_alg alg, const u8 *addr,
7197                                   int key_idx, int set_tx,
7198                                   const u8 *seq, size_t seq_len,
7199                                   const u8 *key, size_t key_len)
7200 {
7201         struct i802_bss *bss = priv;
7202         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7203                                           set_tx, seq, seq_len, key, key_len);
7204 }
7205
7206
7207 static int driver_nl80211_scan2(void *priv,
7208                                 struct wpa_driver_scan_params *params)
7209 {
7210         struct i802_bss *bss = priv;
7211         return wpa_driver_nl80211_scan(bss, params);
7212 }
7213
7214
7215 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7216                                          int reason_code)
7217 {
7218         struct i802_bss *bss = priv;
7219         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7220 }
7221
7222
7223 static int driver_nl80211_authenticate(void *priv,
7224                                        struct wpa_driver_auth_params *params)
7225 {
7226         struct i802_bss *bss = priv;
7227         return wpa_driver_nl80211_authenticate(bss, params);
7228 }
7229
7230
7231 static void driver_nl80211_deinit(void *priv)
7232 {
7233         struct i802_bss *bss = priv;
7234         wpa_driver_nl80211_deinit(bss);
7235 }
7236
7237
7238 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7239                                     const char *ifname)
7240 {
7241         struct i802_bss *bss = priv;
7242         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7243 }
7244
7245
7246 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7247                                     size_t data_len, int noack)
7248 {
7249         struct i802_bss *bss = priv;
7250         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7251                                             0, 0, 0, 0);
7252 }
7253
7254
7255 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7256 {
7257         struct i802_bss *bss = priv;
7258         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7259 }
7260
7261
7262 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7263                                        const char *ifname, int vlan_id)
7264 {
7265         struct i802_bss *bss = priv;
7266         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7267 }
7268
7269
7270 static int driver_nl80211_read_sta_data(void *priv,
7271                                         struct hostap_sta_driver_data *data,
7272                                         const u8 *addr)
7273 {
7274         struct i802_bss *bss = priv;
7275         return i802_read_sta_data(bss, data, addr);
7276 }
7277
7278
7279 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7280                                       unsigned int wait_time,
7281                                       const u8 *dst, const u8 *src,
7282                                       const u8 *bssid,
7283                                       const u8 *data, size_t data_len,
7284                                       int no_cck)
7285 {
7286         struct i802_bss *bss = priv;
7287         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7288                                               bssid, data, data_len, no_cck);
7289 }
7290
7291
7292 static int driver_nl80211_probe_req_report(void *priv, int report)
7293 {
7294         struct i802_bss *bss = priv;
7295         return wpa_driver_nl80211_probe_req_report(bss, report);
7296 }
7297
7298
7299 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7300                                             const u8 *ies, size_t ies_len)
7301 {
7302         int ret;
7303         struct nl_msg *msg;
7304         struct i802_bss *bss = priv;
7305         struct wpa_driver_nl80211_data *drv = bss->drv;
7306         u16 mdid = WPA_GET_LE16(md);
7307
7308         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7309         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7310             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7311             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7312                 nlmsg_free(msg);
7313                 return -ENOBUFS;
7314         }
7315
7316         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7317         if (ret) {
7318                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7319                            "err=%d (%s)", ret, strerror(-ret));
7320         }
7321
7322         return ret;
7323 }
7324
7325
7326 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7327 {
7328         struct i802_bss *bss = priv;
7329         struct wpa_driver_nl80211_data *drv = bss->drv;
7330
7331         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7332                 return NULL;
7333
7334         return bss->addr;
7335 }
7336
7337
7338 static const char * scan_state_str(enum scan_states scan_state)
7339 {
7340         switch (scan_state) {
7341         case NO_SCAN:
7342                 return "NO_SCAN";
7343         case SCAN_REQUESTED:
7344                 return "SCAN_REQUESTED";
7345         case SCAN_STARTED:
7346                 return "SCAN_STARTED";
7347         case SCAN_COMPLETED:
7348                 return "SCAN_COMPLETED";
7349         case SCAN_ABORTED:
7350                 return "SCAN_ABORTED";
7351         case SCHED_SCAN_STARTED:
7352                 return "SCHED_SCAN_STARTED";
7353         case SCHED_SCAN_STOPPED:
7354                 return "SCHED_SCAN_STOPPED";
7355         case SCHED_SCAN_RESULTS:
7356                 return "SCHED_SCAN_RESULTS";
7357         }
7358
7359         return "??";
7360 }
7361
7362
7363 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7364 {
7365         struct i802_bss *bss = priv;
7366         struct wpa_driver_nl80211_data *drv = bss->drv;
7367         int res;
7368         char *pos, *end;
7369
7370         pos = buf;
7371         end = buf + buflen;
7372
7373         res = os_snprintf(pos, end - pos,
7374                           "ifindex=%d\n"
7375                           "ifname=%s\n"
7376                           "brname=%s\n"
7377                           "addr=" MACSTR "\n"
7378                           "freq=%d\n"
7379                           "%s%s%s%s%s",
7380                           bss->ifindex,
7381                           bss->ifname,
7382                           bss->brname,
7383                           MAC2STR(bss->addr),
7384                           bss->freq,
7385                           bss->beacon_set ? "beacon_set=1\n" : "",
7386                           bss->added_if_into_bridge ?
7387                           "added_if_into_bridge=1\n" : "",
7388                           bss->added_bridge ? "added_bridge=1\n" : "",
7389                           bss->in_deinit ? "in_deinit=1\n" : "",
7390                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7391         if (os_snprintf_error(end - pos, res))
7392                 return pos - buf;
7393         pos += res;
7394
7395         if (bss->wdev_id_set) {
7396                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7397                                   (unsigned long long) bss->wdev_id);
7398                 if (os_snprintf_error(end - pos, res))
7399                         return pos - buf;
7400                 pos += res;
7401         }
7402
7403         res = os_snprintf(pos, end - pos,
7404                           "phyname=%s\n"
7405                           "perm_addr=" MACSTR "\n"
7406                           "drv_ifindex=%d\n"
7407                           "operstate=%d\n"
7408                           "scan_state=%s\n"
7409                           "auth_bssid=" MACSTR "\n"
7410                           "auth_attempt_bssid=" MACSTR "\n"
7411                           "bssid=" MACSTR "\n"
7412                           "prev_bssid=" MACSTR "\n"
7413                           "associated=%d\n"
7414                           "assoc_freq=%u\n"
7415                           "monitor_sock=%d\n"
7416                           "monitor_ifidx=%d\n"
7417                           "monitor_refcount=%d\n"
7418                           "last_mgmt_freq=%u\n"
7419                           "eapol_tx_sock=%d\n"
7420                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7421                           drv->phyname,
7422                           MAC2STR(drv->perm_addr),
7423                           drv->ifindex,
7424                           drv->operstate,
7425                           scan_state_str(drv->scan_state),
7426                           MAC2STR(drv->auth_bssid),
7427                           MAC2STR(drv->auth_attempt_bssid),
7428                           MAC2STR(drv->bssid),
7429                           MAC2STR(drv->prev_bssid),
7430                           drv->associated,
7431                           drv->assoc_freq,
7432                           drv->monitor_sock,
7433                           drv->monitor_ifidx,
7434                           drv->monitor_refcount,
7435                           drv->last_mgmt_freq,
7436                           drv->eapol_tx_sock,
7437                           drv->ignore_if_down_event ?
7438                           "ignore_if_down_event=1\n" : "",
7439                           drv->scan_complete_events ?
7440                           "scan_complete_events=1\n" : "",
7441                           drv->disabled_11b_rates ?
7442                           "disabled_11b_rates=1\n" : "",
7443                           drv->pending_remain_on_chan ?
7444                           "pending_remain_on_chan=1\n" : "",
7445                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7446                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7447                           drv->poll_command_supported ?
7448                           "poll_command_supported=1\n" : "",
7449                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7450                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7451                           drv->retry_auth ? "retry_auth=1\n" : "",
7452                           drv->use_monitor ? "use_monitor=1\n" : "",
7453                           drv->ignore_next_local_disconnect ?
7454                           "ignore_next_local_disconnect=1\n" : "",
7455                           drv->ignore_next_local_deauth ?
7456                           "ignore_next_local_deauth=1\n" : "");
7457         if (os_snprintf_error(end - pos, res))
7458                 return pos - buf;
7459         pos += res;
7460
7461         if (drv->has_capability) {
7462                 res = os_snprintf(pos, end - pos,
7463                                   "capa.key_mgmt=0x%x\n"
7464                                   "capa.enc=0x%x\n"
7465                                   "capa.auth=0x%x\n"
7466                                   "capa.flags=0x%llx\n"
7467                                   "capa.rrm_flags=0x%x\n"
7468                                   "capa.max_scan_ssids=%d\n"
7469                                   "capa.max_sched_scan_ssids=%d\n"
7470                                   "capa.sched_scan_supported=%d\n"
7471                                   "capa.max_match_sets=%d\n"
7472                                   "capa.max_remain_on_chan=%u\n"
7473                                   "capa.max_stations=%u\n"
7474                                   "capa.probe_resp_offloads=0x%x\n"
7475                                   "capa.max_acl_mac_addrs=%u\n"
7476                                   "capa.num_multichan_concurrent=%u\n"
7477                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7478                                   "capa.mac_addr_rand_scan_supported=%d\n",
7479                                   drv->capa.key_mgmt,
7480                                   drv->capa.enc,
7481                                   drv->capa.auth,
7482                                   (unsigned long long) drv->capa.flags,
7483                                   drv->capa.rrm_flags,
7484                                   drv->capa.max_scan_ssids,
7485                                   drv->capa.max_sched_scan_ssids,
7486                                   drv->capa.sched_scan_supported,
7487                                   drv->capa.max_match_sets,
7488                                   drv->capa.max_remain_on_chan,
7489                                   drv->capa.max_stations,
7490                                   drv->capa.probe_resp_offloads,
7491                                   drv->capa.max_acl_mac_addrs,
7492                                   drv->capa.num_multichan_concurrent,
7493                                   drv->capa.mac_addr_rand_sched_scan_supported,
7494                                   drv->capa.mac_addr_rand_scan_supported);
7495                 if (os_snprintf_error(end - pos, res))
7496                         return pos - buf;
7497                 pos += res;
7498         }
7499
7500         return pos - buf;
7501 }
7502
7503
7504 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7505 {
7506         if ((settings->head &&
7507              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7508                      settings->head_len, settings->head)) ||
7509             (settings->tail &&
7510              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7511                      settings->tail_len, settings->tail)) ||
7512             (settings->beacon_ies &&
7513              nla_put(msg, NL80211_ATTR_IE,
7514                      settings->beacon_ies_len, settings->beacon_ies)) ||
7515             (settings->proberesp_ies &&
7516              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7517                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7518             (settings->assocresp_ies &&
7519              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7520                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7521             (settings->probe_resp &&
7522              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7523                      settings->probe_resp_len, settings->probe_resp)))
7524                 return -ENOBUFS;
7525
7526         return 0;
7527 }
7528
7529
7530 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7531 {
7532         struct nl_msg *msg;
7533         struct i802_bss *bss = priv;
7534         struct wpa_driver_nl80211_data *drv = bss->drv;
7535         struct nlattr *beacon_csa;
7536         int ret = -ENOBUFS;
7537
7538         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7539                    settings->cs_count, settings->block_tx,
7540                    settings->freq_params.freq, settings->freq_params.bandwidth,
7541                    settings->freq_params.center_freq1,
7542                    settings->freq_params.center_freq2);
7543
7544         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7545                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7546                 return -EOPNOTSUPP;
7547         }
7548
7549         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7550             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7551                 return -EOPNOTSUPP;
7552
7553         /* check settings validity */
7554         if (!settings->beacon_csa.tail ||
7555             ((settings->beacon_csa.tail_len <=
7556               settings->counter_offset_beacon) ||
7557              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7558               settings->cs_count)))
7559                 return -EINVAL;
7560
7561         if (settings->beacon_csa.probe_resp &&
7562             ((settings->beacon_csa.probe_resp_len <=
7563               settings->counter_offset_presp) ||
7564              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7565               settings->cs_count)))
7566                 return -EINVAL;
7567
7568         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7569             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7570                         settings->cs_count) ||
7571             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7572             (settings->block_tx &&
7573              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7574                 goto error;
7575
7576         /* beacon_after params */
7577         ret = set_beacon_data(msg, &settings->beacon_after);
7578         if (ret)
7579                 goto error;
7580
7581         /* beacon_csa params */
7582         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7583         if (!beacon_csa)
7584                 goto fail;
7585
7586         ret = set_beacon_data(msg, &settings->beacon_csa);
7587         if (ret)
7588                 goto error;
7589
7590         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7591                         settings->counter_offset_beacon) ||
7592             (settings->beacon_csa.probe_resp &&
7593              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7594                          settings->counter_offset_presp)))
7595                 goto fail;
7596
7597         nla_nest_end(msg, beacon_csa);
7598         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7599         if (ret) {
7600                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7601                            ret, strerror(-ret));
7602         }
7603         return ret;
7604
7605 fail:
7606         ret = -ENOBUFS;
7607 error:
7608         nlmsg_free(msg);
7609         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7610         return ret;
7611 }
7612
7613
7614 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7615                           u8 user_priority, u16 admitted_time)
7616 {
7617         struct i802_bss *bss = priv;
7618         struct wpa_driver_nl80211_data *drv = bss->drv;
7619         struct nl_msg *msg;
7620         int ret;
7621
7622         wpa_printf(MSG_DEBUG,
7623                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7624                    tsid, admitted_time, user_priority);
7625
7626         if (!is_sta_interface(drv->nlmode))
7627                 return -ENOTSUP;
7628
7629         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7630         if (!msg ||
7631             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7632             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7633             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7634             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7635                 nlmsg_free(msg);
7636                 return -ENOBUFS;
7637         }
7638
7639         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7640         if (ret)
7641                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7642                            ret, strerror(-ret));
7643         return ret;
7644 }
7645
7646
7647 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7648 {
7649         struct i802_bss *bss = priv;
7650         struct wpa_driver_nl80211_data *drv = bss->drv;
7651         struct nl_msg *msg;
7652         int ret;
7653
7654         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7655
7656         if (!is_sta_interface(drv->nlmode))
7657                 return -ENOTSUP;
7658
7659         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7660             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7661             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7662                 nlmsg_free(msg);
7663                 return -ENOBUFS;
7664         }
7665
7666         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7667         if (ret)
7668                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7669                            ret, strerror(-ret));
7670         return ret;
7671 }
7672
7673
7674 #ifdef CONFIG_TESTING_OPTIONS
7675 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7676 {
7677         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7678         struct wpabuf *buf = arg;
7679
7680         if (!buf)
7681                 return NL_SKIP;
7682
7683         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7684                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7685                 return NL_SKIP;
7686         }
7687
7688         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7689                         genlmsg_attrlen(gnlh, 0));
7690
7691         return NL_SKIP;
7692 }
7693 #endif /* CONFIG_TESTING_OPTIONS */
7694
7695
7696 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7697 {
7698         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7699         struct nlattr *nl_vendor_reply, *nl;
7700         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7701         struct wpabuf *buf = arg;
7702         int rem;
7703
7704         if (!buf)
7705                 return NL_SKIP;
7706
7707         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7708                   genlmsg_attrlen(gnlh, 0), NULL);
7709         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7710
7711         if (!nl_vendor_reply)
7712                 return NL_SKIP;
7713
7714         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7715                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7716                 return NL_SKIP;
7717         }
7718
7719         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7720                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7721         }
7722
7723         return NL_SKIP;
7724 }
7725
7726
7727 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7728                               unsigned int subcmd, const u8 *data,
7729                               size_t data_len, struct wpabuf *buf)
7730 {
7731         struct i802_bss *bss = priv;
7732         struct wpa_driver_nl80211_data *drv = bss->drv;
7733         struct nl_msg *msg;
7734         int ret;
7735
7736 #ifdef CONFIG_TESTING_OPTIONS
7737         if (vendor_id == 0xffffffff) {
7738                 msg = nlmsg_alloc();
7739                 if (!msg)
7740                         return -ENOMEM;
7741
7742                 nl80211_cmd(drv, msg, 0, subcmd);
7743                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7744                     0)
7745                         goto fail;
7746                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7747                 if (ret)
7748                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7749                                    ret);
7750                 return ret;
7751         }
7752 #endif /* CONFIG_TESTING_OPTIONS */
7753
7754         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7755             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7756             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7757             (data &&
7758              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7759                 goto fail;
7760
7761         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7762         if (ret)
7763                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7764                            ret);
7765         return ret;
7766
7767 fail:
7768         nlmsg_free(msg);
7769         return -ENOBUFS;
7770 }
7771
7772
7773 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7774                                u8 qos_map_set_len)
7775 {
7776         struct i802_bss *bss = priv;
7777         struct wpa_driver_nl80211_data *drv = bss->drv;
7778         struct nl_msg *msg;
7779         int ret;
7780
7781         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7782                     qos_map_set, qos_map_set_len);
7783
7784         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7785             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7786                 nlmsg_free(msg);
7787                 return -ENOBUFS;
7788         }
7789
7790         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7791         if (ret)
7792                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7793
7794         return ret;
7795 }
7796
7797
7798 static int nl80211_set_wowlan(void *priv,
7799                               const struct wowlan_triggers *triggers)
7800 {
7801         struct i802_bss *bss = priv;
7802         struct wpa_driver_nl80211_data *drv = bss->drv;
7803         struct nl_msg *msg;
7804         struct nlattr *wowlan_triggers;
7805         int ret;
7806
7807         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7808
7809         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
7810             !(wowlan_triggers = nla_nest_start(msg,
7811                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7812             (triggers->any &&
7813              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7814             (triggers->disconnect &&
7815              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7816             (triggers->magic_pkt &&
7817              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7818             (triggers->gtk_rekey_failure &&
7819              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7820             (triggers->eap_identity_req &&
7821              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7822             (triggers->four_way_handshake &&
7823              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7824             (triggers->rfkill_release &&
7825              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7826                 nlmsg_free(msg);
7827                 return -ENOBUFS;
7828         }
7829
7830         nla_nest_end(msg, wowlan_triggers);
7831
7832         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7833         if (ret)
7834                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7835
7836         return ret;
7837 }
7838
7839
7840 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7841 {
7842         struct i802_bss *bss = priv;
7843         struct wpa_driver_nl80211_data *drv = bss->drv;
7844         struct nl_msg *msg;
7845         struct nlattr *params;
7846
7847         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7848
7849         if (!drv->roaming_vendor_cmd_avail) {
7850                 wpa_printf(MSG_DEBUG,
7851                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7852                 return -1;
7853         }
7854
7855         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7856             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7857             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7858                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7859             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7860             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7861                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7862                         QCA_ROAMING_NOT_ALLOWED) ||
7863             (bssid &&
7864              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7865                 nlmsg_free(msg);
7866                 return -1;
7867         }
7868         nla_nest_end(msg, params);
7869
7870         return send_and_recv_msgs(drv, msg, NULL, NULL);
7871 }
7872
7873
7874 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7875 {
7876         struct i802_bss *bss = priv;
7877         struct wpa_driver_nl80211_data *drv = bss->drv;
7878         int new_addr = addr != NULL;
7879
7880         if (!addr)
7881                 addr = drv->perm_addr;
7882
7883         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7884                 return -1;
7885
7886         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7887         {
7888                 wpa_printf(MSG_DEBUG,
7889                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7890                            bss->ifname, MAC2STR(addr));
7891                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7892                                           1) < 0) {
7893                         wpa_printf(MSG_DEBUG,
7894                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7895                 }
7896                 return -1;
7897         }
7898
7899         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7900                    bss->ifname, MAC2STR(addr));
7901         drv->addr_changed = new_addr;
7902         os_memcpy(bss->addr, addr, ETH_ALEN);
7903
7904         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7905         {
7906                 wpa_printf(MSG_DEBUG,
7907                            "nl80211: Could not restore interface UP after set_mac_addr");
7908         }
7909
7910         return 0;
7911 }
7912
7913
7914 #ifdef CONFIG_MESH
7915
7916 static int wpa_driver_nl80211_init_mesh(void *priv)
7917 {
7918         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7919                 wpa_printf(MSG_INFO,
7920                            "nl80211: Failed to set interface into mesh mode");
7921                 return -1;
7922         }
7923         return 0;
7924 }
7925
7926
7927 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
7928                                size_t mesh_id_len)
7929 {
7930         if (mesh_id) {
7931                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
7932                                   mesh_id, mesh_id_len);
7933                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
7934         }
7935
7936         return 0;
7937 }
7938
7939
7940 static int nl80211_join_mesh(struct i802_bss *bss,
7941                              struct wpa_driver_mesh_join_params *params)
7942 {
7943         struct wpa_driver_nl80211_data *drv = bss->drv;
7944         struct nl_msg *msg;
7945         struct nlattr *container;
7946         int ret = -1;
7947
7948         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7949         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7950         if (!msg ||
7951             nl80211_put_freq_params(msg, &params->freq) ||
7952             nl80211_put_basic_rates(msg, params->basic_rates) ||
7953             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
7954             nl80211_put_beacon_int(msg, params->beacon_int))
7955                 goto fail;
7956
7957         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7958
7959         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7960         if (!container)
7961                 goto fail;
7962
7963         if (params->ies) {
7964                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7965                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7966                             params->ies))
7967                         goto fail;
7968         }
7969         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
7970         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
7971                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
7972                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
7973                         goto fail;
7974         }
7975         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
7976             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
7977                 goto fail;
7978         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
7979             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
7980                 goto fail;
7981         nla_nest_end(msg, container);
7982
7983         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
7984         if (!container)
7985                 goto fail;
7986
7987         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
7988             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
7989                 goto fail;
7990         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
7991             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7992                         params->max_peer_links))
7993                 goto fail;
7994
7995         /*
7996          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
7997          * the timer could disconnect stations even in that case.
7998          */
7999         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8000                         params->conf.peer_link_timeout)) {
8001                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8002                 goto fail;
8003         }
8004
8005         nla_nest_end(msg, container);
8006
8007         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8008         msg = NULL;
8009         if (ret) {
8010                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8011                            ret, strerror(-ret));
8012                 goto fail;
8013         }
8014         ret = 0;
8015         bss->freq = params->freq.freq;
8016         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8017
8018 fail:
8019         nlmsg_free(msg);
8020         return ret;
8021 }
8022
8023
8024 static int
8025 wpa_driver_nl80211_join_mesh(void *priv,
8026                              struct wpa_driver_mesh_join_params *params)
8027 {
8028         struct i802_bss *bss = priv;
8029         int ret, timeout;
8030
8031         timeout = params->conf.peer_link_timeout;
8032
8033         /* Disable kernel inactivity timer */
8034         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8035                 params->conf.peer_link_timeout = 0;
8036
8037         ret = nl80211_join_mesh(bss, params);
8038         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8039                 wpa_printf(MSG_DEBUG,
8040                            "nl80211: Mesh join retry for peer_link_timeout");
8041                 /*
8042                  * Old kernel does not support setting
8043                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8044                  * into future from peer_link_timeout.
8045                  */
8046                 params->conf.peer_link_timeout = timeout + 60;
8047                 ret = nl80211_join_mesh(priv, params);
8048         }
8049
8050         params->conf.peer_link_timeout = timeout;
8051         return ret;
8052 }
8053
8054
8055 static int wpa_driver_nl80211_leave_mesh(void *priv)
8056 {
8057         struct i802_bss *bss = priv;
8058         struct wpa_driver_nl80211_data *drv = bss->drv;
8059         struct nl_msg *msg;
8060         int ret;
8061
8062         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8063         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8064         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8065         if (ret) {
8066                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8067                            ret, strerror(-ret));
8068         } else {
8069                 wpa_printf(MSG_DEBUG,
8070                            "nl80211: mesh leave request send successfully");
8071         }
8072
8073         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8074                                         NL80211_IFTYPE_STATION)) {
8075                 wpa_printf(MSG_INFO,
8076                            "nl80211: Failed to set interface into station mode");
8077         }
8078         return ret;
8079 }
8080
8081 #endif /* CONFIG_MESH */
8082
8083
8084 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8085                                       const u8 *ipaddr, int prefixlen,
8086                                       const u8 *addr)
8087 {
8088 #ifdef CONFIG_LIBNL3_ROUTE
8089         struct i802_bss *bss = priv;
8090         struct wpa_driver_nl80211_data *drv = bss->drv;
8091         struct rtnl_neigh *rn;
8092         struct nl_addr *nl_ipaddr = NULL;
8093         struct nl_addr *nl_lladdr = NULL;
8094         int family, addrsize;
8095         int res;
8096
8097         if (!ipaddr || prefixlen == 0 || !addr)
8098                 return -EINVAL;
8099
8100         if (bss->br_ifindex == 0) {
8101                 wpa_printf(MSG_DEBUG,
8102                            "nl80211: bridge must be set before adding an ip neigh to it");
8103                 return -1;
8104         }
8105
8106         if (!drv->rtnl_sk) {
8107                 wpa_printf(MSG_DEBUG,
8108                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8109                 return -1;
8110         }
8111
8112         if (version == 4) {
8113                 family = AF_INET;
8114                 addrsize = 4;
8115         } else if (version == 6) {
8116                 family = AF_INET6;
8117                 addrsize = 16;
8118         } else {
8119                 return -EINVAL;
8120         }
8121
8122         rn = rtnl_neigh_alloc();
8123         if (rn == NULL)
8124                 return -ENOMEM;
8125
8126         /* set the destination ip address for neigh */
8127         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8128         if (nl_ipaddr == NULL) {
8129                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8130                 res = -ENOMEM;
8131                 goto errout;
8132         }
8133         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8134         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8135         if (res) {
8136                 wpa_printf(MSG_DEBUG,
8137                            "nl80211: neigh set destination addr failed");
8138                 goto errout;
8139         }
8140
8141         /* set the corresponding lladdr for neigh */
8142         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8143         if (nl_lladdr == NULL) {
8144                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8145                 res = -ENOMEM;
8146                 goto errout;
8147         }
8148         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8149
8150         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8151         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8152
8153         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8154         if (res) {
8155                 wpa_printf(MSG_DEBUG,
8156                            "nl80211: Adding bridge ip neigh failed: %s",
8157                            strerror(errno));
8158         }
8159 errout:
8160         if (nl_lladdr)
8161                 nl_addr_put(nl_lladdr);
8162         if (nl_ipaddr)
8163                 nl_addr_put(nl_ipaddr);
8164         if (rn)
8165                 rtnl_neigh_put(rn);
8166         return res;
8167 #else /* CONFIG_LIBNL3_ROUTE */
8168         return -1;
8169 #endif /* CONFIG_LIBNL3_ROUTE */
8170 }
8171
8172
8173 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8174                                          const u8 *ipaddr)
8175 {
8176 #ifdef CONFIG_LIBNL3_ROUTE
8177         struct i802_bss *bss = priv;
8178         struct wpa_driver_nl80211_data *drv = bss->drv;
8179         struct rtnl_neigh *rn;
8180         struct nl_addr *nl_ipaddr;
8181         int family, addrsize;
8182         int res;
8183
8184         if (!ipaddr)
8185                 return -EINVAL;
8186
8187         if (version == 4) {
8188                 family = AF_INET;
8189                 addrsize = 4;
8190         } else if (version == 6) {
8191                 family = AF_INET6;
8192                 addrsize = 16;
8193         } else {
8194                 return -EINVAL;
8195         }
8196
8197         if (bss->br_ifindex == 0) {
8198                 wpa_printf(MSG_DEBUG,
8199                            "nl80211: bridge must be set to delete an ip neigh");
8200                 return -1;
8201         }
8202
8203         if (!drv->rtnl_sk) {
8204                 wpa_printf(MSG_DEBUG,
8205                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8206                 return -1;
8207         }
8208
8209         rn = rtnl_neigh_alloc();
8210         if (rn == NULL)
8211                 return -ENOMEM;
8212
8213         /* set the destination ip address for neigh */
8214         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8215         if (nl_ipaddr == NULL) {
8216                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8217                 res = -ENOMEM;
8218                 goto errout;
8219         }
8220         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8221         if (res) {
8222                 wpa_printf(MSG_DEBUG,
8223                            "nl80211: neigh set destination addr failed");
8224                 goto errout;
8225         }
8226
8227         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8228
8229         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8230         if (res) {
8231                 wpa_printf(MSG_DEBUG,
8232                            "nl80211: Deleting bridge ip neigh failed: %s",
8233                            strerror(errno));
8234         }
8235 errout:
8236         if (nl_ipaddr)
8237                 nl_addr_put(nl_ipaddr);
8238         if (rn)
8239                 rtnl_neigh_put(rn);
8240         return res;
8241 #else /* CONFIG_LIBNL3_ROUTE */
8242         return -1;
8243 #endif /* CONFIG_LIBNL3_ROUTE */
8244 }
8245
8246
8247 static int linux_write_system_file(const char *path, unsigned int val)
8248 {
8249         char buf[50];
8250         int fd, len;
8251
8252         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8253         if (os_snprintf_error(sizeof(buf), len))
8254                 return -1;
8255
8256         fd = open(path, O_WRONLY);
8257         if (fd < 0)
8258                 return -1;
8259
8260         if (write(fd, buf, len) < 0) {
8261                 wpa_printf(MSG_DEBUG,
8262                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8263                            path, val);
8264                 close(fd);
8265                 return -1;
8266         }
8267         close(fd);
8268
8269         return 0;
8270 }
8271
8272
8273 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8274 {
8275         switch (attr) {
8276         case DRV_BR_PORT_ATTR_PROXYARP:
8277                 return "proxyarp";
8278         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8279                 return "hairpin_mode";
8280         }
8281
8282         return NULL;
8283 }
8284
8285
8286 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8287                                        unsigned int val)
8288 {
8289         struct i802_bss *bss = priv;
8290         char path[128];
8291         const char *attr_txt;
8292
8293         attr_txt = drv_br_port_attr_str(attr);
8294         if (attr_txt == NULL)
8295                 return -EINVAL;
8296
8297         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8298                     bss->ifname, attr_txt);
8299
8300         if (linux_write_system_file(path, val))
8301                 return -1;
8302
8303         return 0;
8304 }
8305
8306
8307 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8308 {
8309         switch (param) {
8310         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8311                 return "arp_accept";
8312         }
8313
8314         return NULL;
8315 }
8316
8317
8318 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8319                                        unsigned int val)
8320 {
8321         struct i802_bss *bss = priv;
8322         char path[128];
8323         const char *param_txt;
8324         int ip_version = 4;
8325
8326         param_txt = drv_br_net_param_str(param);
8327         if (param_txt == NULL)
8328                 return -EINVAL;
8329
8330         switch (param) {
8331                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8332                         ip_version = 4;
8333                         break;
8334                 default:
8335                         return -EINVAL;
8336         }
8337
8338         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8339                     ip_version, bss->brname, param_txt);
8340
8341         if (linux_write_system_file(path, val))
8342                 return -1;
8343
8344         return 0;
8345 }
8346
8347
8348 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8349 {
8350         switch (hw_mode) {
8351         case HOSTAPD_MODE_IEEE80211B:
8352                 return QCA_ACS_MODE_IEEE80211B;
8353         case HOSTAPD_MODE_IEEE80211G:
8354                 return QCA_ACS_MODE_IEEE80211G;
8355         case HOSTAPD_MODE_IEEE80211A:
8356                 return QCA_ACS_MODE_IEEE80211A;
8357         case HOSTAPD_MODE_IEEE80211AD:
8358                 return QCA_ACS_MODE_IEEE80211AD;
8359         default:
8360                 return -1;
8361         }
8362 }
8363
8364
8365 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8366 {
8367         struct i802_bss *bss = priv;
8368         struct wpa_driver_nl80211_data *drv = bss->drv;
8369         struct nl_msg *msg;
8370         struct nlattr *data;
8371         int ret;
8372         int mode;
8373
8374         mode = hw_mode_to_qca_acs(params->hw_mode);
8375         if (mode < 0)
8376                 return -1;
8377
8378         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8379             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8380             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8381                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8382             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8383             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8384             (params->ht_enabled &&
8385              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8386             (params->ht40_enabled &&
8387              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
8388                 nlmsg_free(msg);
8389                 return -ENOBUFS;
8390         }
8391         nla_nest_end(msg, data);
8392
8393         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8394         if (ret) {
8395                 wpa_printf(MSG_DEBUG,
8396                            "nl80211: Failed to invoke driver ACS function: %s",
8397                            strerror(errno));
8398         }
8399         return ret;
8400 }
8401
8402
8403 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8404         .name = "nl80211",
8405         .desc = "Linux nl80211/cfg80211",
8406         .get_bssid = wpa_driver_nl80211_get_bssid,
8407         .get_ssid = wpa_driver_nl80211_get_ssid,
8408         .set_key = driver_nl80211_set_key,
8409         .scan2 = driver_nl80211_scan2,
8410         .sched_scan = wpa_driver_nl80211_sched_scan,
8411         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8412         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8413         .deauthenticate = driver_nl80211_deauthenticate,
8414         .authenticate = driver_nl80211_authenticate,
8415         .associate = wpa_driver_nl80211_associate,
8416         .global_init = nl80211_global_init,
8417         .global_deinit = nl80211_global_deinit,
8418         .init2 = wpa_driver_nl80211_init,
8419         .deinit = driver_nl80211_deinit,
8420         .get_capa = wpa_driver_nl80211_get_capa,
8421         .set_operstate = wpa_driver_nl80211_set_operstate,
8422         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8423         .set_country = wpa_driver_nl80211_set_country,
8424         .get_country = wpa_driver_nl80211_get_country,
8425         .set_ap = wpa_driver_nl80211_set_ap,
8426         .set_acl = wpa_driver_nl80211_set_acl,
8427         .if_add = wpa_driver_nl80211_if_add,
8428         .if_remove = driver_nl80211_if_remove,
8429         .send_mlme = driver_nl80211_send_mlme,
8430         .get_hw_feature_data = nl80211_get_hw_feature_data,
8431         .sta_add = wpa_driver_nl80211_sta_add,
8432         .sta_remove = driver_nl80211_sta_remove,
8433         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8434         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8435         .hapd_init = i802_init,
8436         .hapd_deinit = i802_deinit,
8437         .set_wds_sta = i802_set_wds_sta,
8438         .get_seqnum = i802_get_seqnum,
8439         .flush = i802_flush,
8440         .get_inact_sec = i802_get_inact_sec,
8441         .sta_clear_stats = i802_sta_clear_stats,
8442         .set_rts = i802_set_rts,
8443         .set_frag = i802_set_frag,
8444         .set_tx_queue_params = i802_set_tx_queue_params,
8445         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8446         .sta_deauth = i802_sta_deauth,
8447         .sta_disassoc = i802_sta_disassoc,
8448         .read_sta_data = driver_nl80211_read_sta_data,
8449         .set_freq = i802_set_freq,
8450         .send_action = driver_nl80211_send_action,
8451         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8452         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8453         .cancel_remain_on_channel =
8454         wpa_driver_nl80211_cancel_remain_on_channel,
8455         .probe_req_report = driver_nl80211_probe_req_report,
8456         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8457         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8458         .resume = wpa_driver_nl80211_resume,
8459         .signal_monitor = nl80211_signal_monitor,
8460         .signal_poll = nl80211_signal_poll,
8461         .send_frame = nl80211_send_frame,
8462         .shared_freq = wpa_driver_nl80211_shared_freq,
8463         .set_param = nl80211_set_param,
8464         .get_radio_name = nl80211_get_radio_name,
8465         .add_pmkid = nl80211_add_pmkid,
8466         .remove_pmkid = nl80211_remove_pmkid,
8467         .flush_pmkid = nl80211_flush_pmkid,
8468         .set_rekey_info = nl80211_set_rekey_info,
8469         .poll_client = nl80211_poll_client,
8470         .set_p2p_powersave = nl80211_set_p2p_powersave,
8471         .start_dfs_cac = nl80211_start_radar_detection,
8472         .stop_ap = wpa_driver_nl80211_stop_ap,
8473 #ifdef CONFIG_TDLS
8474         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8475         .tdls_oper = nl80211_tdls_oper,
8476         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8477         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8478 #endif /* CONFIG_TDLS */
8479         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8480         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8481         .get_survey = wpa_driver_nl80211_get_survey,
8482         .status = wpa_driver_nl80211_status,
8483         .switch_channel = nl80211_switch_channel,
8484 #ifdef ANDROID_P2P
8485         .set_noa = wpa_driver_set_p2p_noa,
8486         .get_noa = wpa_driver_get_p2p_noa,
8487         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8488 #endif /* ANDROID_P2P */
8489 #ifdef ANDROID
8490         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8491 #endif /* ANDROID */
8492         .vendor_cmd = nl80211_vendor_cmd,
8493         .set_qos_map = nl80211_set_qos_map,
8494         .set_wowlan = nl80211_set_wowlan,
8495         .roaming = nl80211_roaming,
8496         .set_mac_addr = nl80211_set_mac_addr,
8497 #ifdef CONFIG_MESH
8498         .init_mesh = wpa_driver_nl80211_init_mesh,
8499         .join_mesh = wpa_driver_nl80211_join_mesh,
8500         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8501 #endif /* CONFIG_MESH */
8502         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8503         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8504         .br_port_set_attr = wpa_driver_br_port_set_attr,
8505         .br_set_net_param = wpa_driver_br_set_net_param,
8506         .add_tx_ts = nl80211_add_ts,
8507         .del_tx_ts = nl80211_del_ts,
8508         .do_acs = wpa_driver_do_acs,
8509 };