src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This software may be distributed under the terms of the BSD license.
  10  * See README for more details.
  11  */
  12
  13 #include "includes.h"
  14 #include <sys/types.h>
  15 #include <fcntl.h>
  16 #include <net/if.h>
  17 #include <netlink/genl/genl.h>
  18 #include <netlink/genl/ctrl.h>
  19 #ifdef CONFIG_LIBNL3_ROUTE
  20 #include <netlink/route/neighbour.h>
  21 #endif /* CONFIG_LIBNL3_ROUTE */
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/errqueue.h>
  25
  26 #include "common.h"
  27 #include "eloop.h"
  28 #include "common/qca-vendor.h"
  29 #include "common/qca-vendor-attr.h"
  30 #include "common/ieee802_11_defs.h"
  31 #include "common/ieee802_11_common.h"
  32 #include "l2_packet/l2_packet.h"
  33 #include "netlink.h"
  34 #include "linux_defines.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver_nl80211.h"
  40
  41
  42 #ifndef CONFIG_LIBNL20
  43 /*
  44  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  45  * but when you free a socket again it will mess up its bitmap and
  46  * and use the wrong number the next time it needs a socket ID.
  47  * Therefore, we wrap the handle alloc/destroy and add our own pid
  48  * accounting.
  49  */
  50 static uint32_t port_bitmap[32] = { 0 };
  51
  52 static struct nl_handle *nl80211_handle_alloc(void *cb)
  53 {
  54         struct nl_handle *handle;
  55         uint32_t pid = getpid() & 0x3FFFFF;
  56         int i;
  57
  58         handle = nl_handle_alloc_cb(cb);
  59
  60         for (i = 0; i < 1024; i++) {
  61                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  62                         continue;
  63                 port_bitmap[i / 32] |= 1 << (i % 32);
  64                 pid += i << 22;
  65                 break;
  66         }
  67
  68         nl_socket_set_local_port(handle, pid);
  69
  70         return handle;
  71 }
  72
  73 static void nl80211_handle_destroy(struct nl_handle *handle)
  74 {
  75         uint32_t port = nl_socket_get_local_port(handle);
  76
  77         port >>= 22;
  78         port_bitmap[port / 32] &= ~(1 << (port % 32));
  79
  80         nl_handle_destroy(handle);
  81 }
  82 #endif /* CONFIG_LIBNL20 */
  83
  84
  85 #ifdef ANDROID
  86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
  87 #undef nl_socket_set_nonblocking
  88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
  89
  90 #define genl_ctrl_resolve android_genl_ctrl_resolve
  91 #endif /* ANDROID */
  92
  93
  94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  95 {
  96         struct nl_handle *handle;
  97
  98         handle = nl80211_handle_alloc(cb);
  99         if (handle == NULL) {
 100                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 101                            "callbacks (%s)", dbg);
 102                 return NULL;
 103         }
 104
 105         if (genl_connect(handle)) {
 106                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 107                            "netlink (%s)", dbg);
 108                 nl80211_handle_destroy(handle);
 109                 return NULL;
 110         }
 111
 112         return handle;
 113 }
 114
 115
 116 static void nl_destroy_handles(struct nl_handle **handle)
 117 {
 118         if (*handle == NULL)
 119                 return;
 120         nl80211_handle_destroy(*handle);
 121         *handle = NULL;
 122 }
 123
 124
 125 #if __WORDSIZE == 64
 126 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 127 #else
 128 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 129 #endif
 130
 131 static void nl80211_register_eloop_read(struct nl_handle **handle,
 132                                         eloop_sock_handler handler,
 133                                         void *eloop_data)
 134 {
 135 #ifdef CONFIG_LIBNL20
 136         /*
 137          * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
 138          * by default. It is possible to hit that limit in some cases where
 139          * operations are blocked, e.g., with a burst of Deauthentication frames
 140          * to hostapd and STA entry deletion. Try to increase the buffer to make
 141          * this less likely to occur.
 142          */
 143         if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
 144                 wpa_printf(MSG_DEBUG,
 145                            "nl80211: Could not set nl_socket RX buffer size: %s",
 146                            strerror(errno));
 147                 /* continue anyway with the default (smaller) buffer */
 148         }
 149 #endif /* CONFIG_LIBNL20 */
 150
 151         nl_socket_set_nonblocking(*handle);
 152         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 153                                  eloop_data, *handle);
 154         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 155 }
 156
 157
 158 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 159 {
 160         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 161         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 162         nl_destroy_handles(handle);
 163 }
 164
 165
 166 static void nl80211_global_deinit(void *priv);
 167
 168 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 169 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 170                                             struct hostapd_freq_params *freq);
 171
 172 static int
 173 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 174                                    const u8 *set_addr, int first,
 175                                    const char *driver_params);
 176 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 177                                   unsigned int freq, unsigned int wait,
 178                                   const u8 *buf, size_t buf_len, u64 *cookie,
 179                                   int no_cck, int no_ack, int offchanok);
 180 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 181                                                int report);
 182
 183 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 184 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 185 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 186
 187 static int nl80211_set_channel(struct i802_bss *bss,
 188                                struct hostapd_freq_params *freq, int set_chan);
 189 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 190                                      int ifindex, int disabled);
 191
 192 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 193                               int reset_mode);
 194
 195 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 196 static int nl80211_set_param(void *priv, const char *param);
 197
 198
 199 /* Converts nl80211_chan_width to a common format */
 200 enum chan_width convert2width(int width)
 201 {
 202         switch (width) {
 203         case NL80211_CHAN_WIDTH_20_NOHT:
 204                 return CHAN_WIDTH_20_NOHT;
 205         case NL80211_CHAN_WIDTH_20:
 206                 return CHAN_WIDTH_20;
 207         case NL80211_CHAN_WIDTH_40:
 208                 return CHAN_WIDTH_40;
 209         case NL80211_CHAN_WIDTH_80:
 210                 return CHAN_WIDTH_80;
 211         case NL80211_CHAN_WIDTH_80P80:
 212                 return CHAN_WIDTH_80P80;
 213         case NL80211_CHAN_WIDTH_160:
 214                 return CHAN_WIDTH_160;
 215         }
 216         return CHAN_WIDTH_UNKNOWN;
 217 }
 218
 219
 220 int is_ap_interface(enum nl80211_iftype nlmode)
 221 {
 222         return nlmode == NL80211_IFTYPE_AP ||
 223                 nlmode == NL80211_IFTYPE_P2P_GO;
 224 }
 225
 226
 227 int is_sta_interface(enum nl80211_iftype nlmode)
 228 {
 229         return nlmode == NL80211_IFTYPE_STATION ||
 230                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 231 }
 232
 233
 234 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 235 {
 236         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 237                 nlmode == NL80211_IFTYPE_P2P_GO;
 238 }
 239
 240
 241 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 242                                   int ifindex)
 243 {
 244         struct i802_bss *bss;
 245
 246         for (bss = drv->first_bss; bss; bss = bss->next) {
 247                 if (bss->ifindex == ifindex)
 248                         return bss;
 249         }
 250
 251         return NULL;
 252 }
 253
 254
 255 static int is_mesh_interface(enum nl80211_iftype nlmode)
 256 {
 257         return nlmode == NL80211_IFTYPE_MESH_POINT;
 258 }
 259
 260
 261 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 262 {
 263         if (drv->associated)
 264                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 265         drv->associated = 0;
 266         os_memset(drv->bssid, 0, ETH_ALEN);
 267 }
 268
 269
 270 /* nl80211 code */
 271 static int ack_handler(struct nl_msg *msg, void *arg)
 272 {
 273         int *err = arg;
 274         *err = 0;
 275         return NL_STOP;
 276 }
 277
 278 static int finish_handler(struct nl_msg *msg, void *arg)
 279 {
 280         int *ret = arg;
 281         *ret = 0;
 282         return NL_SKIP;
 283 }
 284
 285 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 286                          void *arg)
 287 {
 288         int *ret = arg;
 289         *ret = err->error;
 290         return NL_SKIP;
 291 }
 292
 293
 294 static int no_seq_check(struct nl_msg *msg, void *arg)
 295 {
 296         return NL_OK;
 297 }
 298
 299
 300 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 301 {
 302         /*
 303          * Clear nlmsg data, e.g., to make sure key material is not left in
 304          * heap memory for unnecessarily long time.
 305          */
 306         if (msg) {
 307                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 308                 void *data = nlmsg_data(hdr);
 309                 /*
 310                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 311                  * only libnl were to maintain a stable API.. Neither will work
 312                  * with all released versions, so just calculate the length
 313                  * here.
 314                  */
 315                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 316
 317                 os_memset(data, 0, len);
 318         }
 319 }
 320
 321
 322 static int send_and_recv(struct nl80211_global *global,
 323                          struct nl_handle *nl_handle, struct nl_msg *msg,
 324                          int (*valid_handler)(struct nl_msg *, void *),
 325                          void *valid_data)
 326 {
 327         struct nl_cb *cb;
 328         int err = -ENOMEM;
 329
 330         if (!msg)
 331                 return -ENOMEM;
 332
 333         cb = nl_cb_clone(global->nl_cb);
 334         if (!cb)
 335                 goto out;
 336
 337         err = nl_send_auto_complete(nl_handle, msg);
 338         if (err < 0)
 339                 goto out;
 340
 341         err = 1;
 342
 343         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 344         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 345         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 346
 347         if (valid_handler)
 348                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 349                           valid_handler, valid_data);
 350
 351         while (err > 0) {
 352                 int res = nl_recvmsgs(nl_handle, cb);
 353                 if (res < 0) {
 354                         wpa_printf(MSG_INFO,
 355                                    "nl80211: %s->nl_recvmsgs failed: %d",
 356                                    __func__, res);
 357                 }
 358         }
 359  out:
 360         nl_cb_put(cb);
 361         if (!valid_handler && valid_data == (void *) -1)
 362                 nl80211_nlmsg_clear(msg);
 363         nlmsg_free(msg);
 364         return err;
 365 }
 366
 367
 368 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 369                        struct nl_msg *msg,
 370                        int (*valid_handler)(struct nl_msg *, void *),
 371                        void *valid_data)
 372 {
 373         return send_and_recv(drv->global, drv->global->nl, msg,
 374                              valid_handler, valid_data);
 375 }
 376
 377
 378 struct family_data {
 379         const char *group;
 380         int id;
 381 };
 382
 383
 384 static int family_handler(struct nl_msg *msg, void *arg)
 385 {
 386         struct family_data *res = arg;
 387         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 388         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 389         struct nlattr *mcgrp;
 390         int i;
 391
 392         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 393                   genlmsg_attrlen(gnlh, 0), NULL);
 394         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 395                 return NL_SKIP;
 396
 397         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 398                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 399                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 400                           nla_len(mcgrp), NULL);
 401                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 402                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 403                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 404                                res->group,
 405                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 406                         continue;
 407                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 408                 break;
 409         };
 410
 411         return NL_SKIP;
 412 }
 413
 414
 415 static int nl_get_multicast_id(struct nl80211_global *global,
 416                                const char *family, const char *group)
 417 {
 418         struct nl_msg *msg;
 419         int ret;
 420         struct family_data res = { group, -ENOENT };
 421
 422         msg = nlmsg_alloc();
 423         if (!msg)
 424                 return -ENOMEM;
 425         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 426                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 427             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 428                 nlmsg_free(msg);
 429                 return -1;
 430         }
 431
 432         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 433         if (ret == 0)
 434                 ret = res.id;
 435         return ret;
 436 }
 437
 438
 439 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 440                    struct nl_msg *msg, int flags, uint8_t cmd)
 441 {
 442         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 443                            0, flags, cmd, 0);
 444 }
 445
 446
 447 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 448 {
 449         if (bss->wdev_id_set)
 450                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 451         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 452 }
 453
 454
 455 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 456 {
 457         struct nl_msg *msg;
 458
 459         msg = nlmsg_alloc();
 460         if (!msg)
 461                 return NULL;
 462
 463         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 464             nl80211_set_iface_id(msg, bss) < 0) {
 465                 nlmsg_free(msg);
 466                 return NULL;
 467         }
 468
 469         return msg;
 470 }
 471
 472
 473 static struct nl_msg *
 474 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 475                     int flags, uint8_t cmd)
 476 {
 477         struct nl_msg *msg;
 478
 479         msg = nlmsg_alloc();
 480         if (!msg)
 481                 return NULL;
 482
 483         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 484             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 485                 nlmsg_free(msg);
 486                 return NULL;
 487         }
 488
 489         return msg;
 490 }
 491
 492
 493 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 494                                 uint8_t cmd)
 495 {
 496         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 497 }
 498
 499
 500 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 501 {
 502         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 503 }
 504
 505
 506 struct wiphy_idx_data {
 507         int wiphy_idx;
 508         enum nl80211_iftype nlmode;
 509         u8 *macaddr;
 510 };
 511
 512
 513 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 514 {
 515         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 516         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 517         struct wiphy_idx_data *info = arg;
 518
 519         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 520                   genlmsg_attrlen(gnlh, 0), NULL);
 521
 522         if (tb[NL80211_ATTR_WIPHY])
 523                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 524
 525         if (tb[NL80211_ATTR_IFTYPE])
 526                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 527
 528         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 529                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 530                           ETH_ALEN);
 531
 532         return NL_SKIP;
 533 }
 534
 535
 536 int nl80211_get_wiphy_index(struct i802_bss *bss)
 537 {
 538         struct nl_msg *msg;
 539         struct wiphy_idx_data data = {
 540                 .wiphy_idx = -1,
 541                 .macaddr = NULL,
 542         };
 543
 544         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 545                 return -1;
 546
 547         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 548                 return data.wiphy_idx;
 549         return -1;
 550 }
 551
 552
 553 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 554 {
 555         struct nl_msg *msg;
 556         struct wiphy_idx_data data = {
 557                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 558                 .macaddr = NULL,
 559         };
 560
 561         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 562                 return NL80211_IFTYPE_UNSPECIFIED;
 563
 564         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 565                 return data.nlmode;
 566         return NL80211_IFTYPE_UNSPECIFIED;
 567 }
 568
 569
 570 static int nl80211_get_macaddr(struct i802_bss *bss)
 571 {
 572         struct nl_msg *msg;
 573         struct wiphy_idx_data data = {
 574                 .macaddr = bss->addr,
 575         };
 576
 577         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 578                 return -1;
 579
 580         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 581 }
 582
 583
 584 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 585                                     struct nl80211_wiphy_data *w)
 586 {
 587         struct nl_msg *msg;
 588         int ret;
 589
 590         msg = nlmsg_alloc();
 591         if (!msg)
 592                 return -1;
 593
 594         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 595             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 596                 nlmsg_free(msg);
 597                 return -1;
 598         }
 599
 600         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 601         if (ret) {
 602                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 603                            "failed: ret=%d (%s)",
 604                            ret, strerror(-ret));
 605         }
 606         return ret;
 607 }
 608
 609
 610 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 611 {
 612         struct nl80211_wiphy_data *w = eloop_ctx;
 613         int res;
 614
 615         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 616
 617         res = nl_recvmsgs(handle, w->nl_cb);
 618         if (res < 0) {
 619                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 620                            __func__, res);
 621         }
 622 }
 623
 624
 625 static int process_beacon_event(struct nl_msg *msg, void *arg)
 626 {
 627         struct nl80211_wiphy_data *w = arg;
 628         struct wpa_driver_nl80211_data *drv;
 629         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 630         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 631         union wpa_event_data event;
 632
 633         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 634                   genlmsg_attrlen(gnlh, 0), NULL);
 635
 636         if (gnlh->cmd != NL80211_CMD_FRAME) {
 637                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 638                            gnlh->cmd);
 639                 return NL_SKIP;
 640         }
 641
 642         if (!tb[NL80211_ATTR_FRAME])
 643                 return NL_SKIP;
 644
 645         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 646                          wiphy_list) {
 647                 os_memset(&event, 0, sizeof(event));
 648                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 649                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 650                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 651         }
 652
 653         return NL_SKIP;
 654 }
 655
 656
 657 static struct nl80211_wiphy_data *
 658 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 659 {
 660         static DEFINE_DL_LIST(nl80211_wiphys);
 661         struct nl80211_wiphy_data *w;
 662         int wiphy_idx, found = 0;
 663         struct i802_bss *tmp_bss;
 664
 665         if (bss->wiphy_data != NULL)
 666                 return bss->wiphy_data;
 667
 668         wiphy_idx = nl80211_get_wiphy_index(bss);
 669
 670         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 671                 if (w->wiphy_idx == wiphy_idx)
 672                         goto add;
 673         }
 674
 675         /* alloc new one */
 676         w = os_zalloc(sizeof(*w));
 677         if (w == NULL)
 678                 return NULL;
 679         w->wiphy_idx = wiphy_idx;
 680         dl_list_init(&w->bsss);
 681         dl_list_init(&w->drvs);
 682
 683         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 684         if (!w->nl_cb) {
 685                 os_free(w);
 686                 return NULL;
 687         }
 688         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 689         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 690                   w);
 691
 692         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 693                                          "wiphy beacons");
 694         if (w->nl_beacons == NULL) {
 695                 os_free(w);
 696                 return NULL;
 697         }
 698
 699         if (nl80211_register_beacons(bss->drv, w)) {
 700                 nl_destroy_handles(&w->nl_beacons);
 701                 os_free(w);
 702                 return NULL;
 703         }
 704
 705         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 706
 707         dl_list_add(&nl80211_wiphys, &w->list);
 708
 709 add:
 710         /* drv entry for this bss already there? */
 711         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 712                 if (tmp_bss->drv == bss->drv) {
 713                         found = 1;
 714                         break;
 715                 }
 716         }
 717         /* if not add it */
 718         if (!found)
 719                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 720
 721         dl_list_add(&w->bsss, &bss->wiphy_list);
 722         bss->wiphy_data = w;
 723         return w;
 724 }
 725
 726
 727 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 728 {
 729         struct nl80211_wiphy_data *w = bss->wiphy_data;
 730         struct i802_bss *tmp_bss;
 731         int found = 0;
 732
 733         if (w == NULL)
 734                 return;
 735         bss->wiphy_data = NULL;
 736         dl_list_del(&bss->wiphy_list);
 737
 738         /* still any for this drv present? */
 739         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 740                 if (tmp_bss->drv == bss->drv) {
 741                         found = 1;
 742                         break;
 743                 }
 744         }
 745         /* if not remove it */
 746         if (!found)
 747                 dl_list_del(&bss->drv->wiphy_list);
 748
 749         if (!dl_list_empty(&w->bsss))
 750                 return;
 751
 752         nl80211_destroy_eloop_handle(&w->nl_beacons);
 753
 754         nl_cb_put(w->nl_cb);
 755         dl_list_del(&w->list);
 756         os_free(w);
 757 }
 758
 759
 760 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 761 {
 762         struct i802_bss *bss = priv;
 763         struct wpa_driver_nl80211_data *drv = bss->drv;
 764         if (!drv->associated)
 765                 return -1;
 766         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 767         return 0;
 768 }
 769
 770
 771 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 772 {
 773         struct i802_bss *bss = priv;
 774         struct wpa_driver_nl80211_data *drv = bss->drv;
 775         if (!drv->associated)
 776                 return -1;
 777         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 778         return drv->ssid_len;
 779 }
 780
 781
 782 static void wpa_driver_nl80211_event_newlink(
 783         struct wpa_driver_nl80211_data *drv, const char *ifname)
 784 {
 785         union wpa_event_data event;
 786
 787         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 788                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 789                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 790                                    drv->first_bss->ifname);
 791                         return;
 792                 }
 793                 if (!drv->if_removed)
 794                         return;
 795                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 796                            drv->first_bss->ifname);
 797                 drv->if_removed = 0;
 798         }
 799
 800         os_memset(&event, 0, sizeof(event));
 801         os_strlcpy(event.interface_status.ifname, ifname,
 802                    sizeof(event.interface_status.ifname));
 803         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 804         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 805 }
 806
 807
 808 static void wpa_driver_nl80211_event_dellink(
 809         struct wpa_driver_nl80211_data *drv, const char *ifname)
 810 {
 811         union wpa_event_data event;
 812
 813         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 814                 if (drv->if_removed) {
 815                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 816                                    ifname);
 817                         return;
 818                 }
 819                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 820                            ifname);
 821                 drv->if_removed = 1;
 822         } else {
 823                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 824                            ifname);
 825         }
 826
 827         os_memset(&event, 0, sizeof(event));
 828         os_strlcpy(event.interface_status.ifname, ifname,
 829                    sizeof(event.interface_status.ifname));
 830         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 831         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 832 }
 833
 834
 835 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 836                                          u8 *buf, size_t len)
 837 {
 838         int attrlen, rta_len;
 839         struct rtattr *attr;
 840
 841         attrlen = len;
 842         attr = (struct rtattr *) buf;
 843
 844         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 845         while (RTA_OK(attr, attrlen)) {
 846                 if (attr->rta_type == IFLA_IFNAME) {
 847                         if (os_strcmp(((char *) attr) + rta_len,
 848                                       drv->first_bss->ifname) == 0)
 849                                 return 1;
 850                         else
 851                                 break;
 852                 }
 853                 attr = RTA_NEXT(attr, attrlen);
 854         }
 855
 856         return 0;
 857 }
 858
 859
 860 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 861                                           int ifindex, u8 *buf, size_t len)
 862 {
 863         if (drv->ifindex == ifindex)
 864                 return 1;
 865
 866         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 867                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 868                            "interface");
 869                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 870                 return 1;
 871         }
 872
 873         return 0;
 874 }
 875
 876
 877 static struct wpa_driver_nl80211_data *
 878 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 879 {
 880         struct wpa_driver_nl80211_data *drv;
 881         dl_list_for_each(drv, &global->interfaces,
 882                          struct wpa_driver_nl80211_data, list) {
 883                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 884                     have_ifidx(drv, idx))
 885                         return drv;
 886         }
 887         return NULL;
 888 }
 889
 890
 891 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 892                                                  struct ifinfomsg *ifi,
 893                                                  u8 *buf, size_t len)
 894 {
 895         struct nl80211_global *global = ctx;
 896         struct wpa_driver_nl80211_data *drv;
 897         int attrlen;
 898         struct rtattr *attr;
 899         u32 brid = 0;
 900         char namebuf[IFNAMSIZ];
 901         char ifname[IFNAMSIZ + 1];
 902         char extra[100], *pos, *end;
 903
 904         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 905         if (!drv) {
 906                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 907                            ifi->ifi_index);
 908                 return;
 909         }
 910
 911         extra[0] = '\0';
 912         pos = extra;
 913         end = pos + sizeof(extra);
 914         ifname[0] = '\0';
 915
 916         attrlen = len;
 917         attr = (struct rtattr *) buf;
 918         while (RTA_OK(attr, attrlen)) {
 919                 switch (attr->rta_type) {
 920                 case IFLA_IFNAME:
 921                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 922                                 break;
 923                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 924                         ifname[RTA_PAYLOAD(attr)] = '\0';
 925                         break;
 926                 case IFLA_MASTER:
 927                         brid = nla_get_u32((struct nlattr *) attr);
 928                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 929                         break;
 930                 case IFLA_WIRELESS:
 931                         pos += os_snprintf(pos, end - pos, " wext");
 932                         break;
 933                 case IFLA_OPERSTATE:
 934                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 935                                            nla_get_u32((struct nlattr *) attr));
 936                         break;
 937                 case IFLA_LINKMODE:
 938                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 939                                            nla_get_u32((struct nlattr *) attr));
 940                         break;
 941                 }
 942                 attr = RTA_NEXT(attr, attrlen);
 943         }
 944         extra[sizeof(extra) - 1] = '\0';
 945
 946         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 947                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 948                    ifi->ifi_flags,
 949                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 950                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 951                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 952                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 953
 954         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 955                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 956                     linux_iface_up(drv->global->ioctl_sock,
 957                                    drv->first_bss->ifname) > 0) {
 958                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 959                                    "event since interface %s is up", namebuf);
 960                         drv->ignore_if_down_event = 0;
 961                         return;
 962                 }
 963                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 964                 if (drv->ignore_if_down_event) {
 965                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 966                                    "event generated by mode change");
 967                         drv->ignore_if_down_event = 0;
 968                 } else {
 969                         drv->if_disabled = 1;
 970                         wpa_supplicant_event(drv->ctx,
 971                                              EVENT_INTERFACE_DISABLED, NULL);
 972
 973                         /*
 974                          * Try to get drv again, since it may be removed as
 975                          * part of the EVENT_INTERFACE_DISABLED handling for
 976                          * dynamic interfaces
 977                          */
 978                         drv = nl80211_find_drv(global, ifi->ifi_index,
 979                                                buf, len);
 980                         if (!drv)
 981                                 return;
 982                 }
 983         }
 984
 985         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 986                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 987                     linux_iface_up(drv->global->ioctl_sock,
 988                                    drv->first_bss->ifname) == 0) {
 989                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 990                                    "event since interface %s is down",
 991                                    namebuf);
 992                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 993                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 994                                    "event since interface %s does not exist",
 995                                    drv->first_bss->ifname);
 996                 } else if (drv->if_removed) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 998                                    "event since interface %s is marked "
 999                                    "removed", drv->first_bss->ifname);
1000                 } else {
1001                         struct i802_bss *bss;
1002                         u8 addr[ETH_ALEN];
1003
1004                         /* Re-read MAC address as it may have changed */
1005                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1006                         if (bss &&
1007                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1008                                                bss->ifname, addr) < 0) {
1009                                 wpa_printf(MSG_DEBUG,
1010                                            "nl80211: %s: failed to re-read MAC address",
1011                                            bss->ifname);
1012                         } else if (bss &&
1013                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1014                                 wpa_printf(MSG_DEBUG,
1015                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1016                                            MACSTR " to " MACSTR,
1017                                            ifi->ifi_index, bss->ifname,
1018                                            MAC2STR(bss->addr),
1019                                            MAC2STR(addr));
1020                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1021                         }
1022
1023                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1024                         drv->if_disabled = 0;
1025                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1026                                              NULL);
1027                 }
1028         }
1029
1030         /*
1031          * Some drivers send the association event before the operup event--in
1032          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1033          * fails. This will hit us when wpa_supplicant does not need to do
1034          * IEEE 802.1X authentication
1035          */
1036         if (drv->operstate == 1 &&
1037             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1038             !(ifi->ifi_flags & IFF_RUNNING)) {
1039                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1040                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1041                                        -1, IF_OPER_UP);
1042         }
1043
1044         if (ifname[0])
1045                 wpa_driver_nl80211_event_newlink(drv, ifname);
1046
1047         if (ifi->ifi_family == AF_BRIDGE && brid) {
1048                 struct i802_bss *bss;
1049
1050                 /* device has been added to bridge */
1051                 if (!if_indextoname(brid, namebuf)) {
1052                         wpa_printf(MSG_DEBUG,
1053                                    "nl80211: Could not find bridge ifname for ifindex %u",
1054                                    brid);
1055                         return;
1056                 }
1057                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1058                            brid, namebuf);
1059                 add_ifidx(drv, brid);
1060
1061                 for (bss = drv->first_bss; bss; bss = bss->next) {
1062                         if (os_strcmp(ifname, bss->ifname) == 0) {
1063                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1064                                 break;
1065                         }
1066                 }
1067         }
1068 }
1069
1070
1071 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1072                                                  struct ifinfomsg *ifi,
1073                                                  u8 *buf, size_t len)
1074 {
1075         struct nl80211_global *global = ctx;
1076         struct wpa_driver_nl80211_data *drv;
1077         int attrlen;
1078         struct rtattr *attr;
1079         u32 brid = 0;
1080         char ifname[IFNAMSIZ + 1];
1081         char extra[100], *pos, *end;
1082
1083         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1084         if (!drv) {
1085                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1086                            ifi->ifi_index);
1087                 return;
1088         }
1089
1090         extra[0] = '\0';
1091         pos = extra;
1092         end = pos + sizeof(extra);
1093         ifname[0] = '\0';
1094
1095         attrlen = len;
1096         attr = (struct rtattr *) buf;
1097         while (RTA_OK(attr, attrlen)) {
1098                 switch (attr->rta_type) {
1099                 case IFLA_IFNAME:
1100                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1101                                 break;
1102                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1103                         ifname[RTA_PAYLOAD(attr)] = '\0';
1104                         break;
1105                 case IFLA_MASTER:
1106                         brid = nla_get_u32((struct nlattr *) attr);
1107                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1108                         break;
1109                 case IFLA_OPERSTATE:
1110                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1111                                            nla_get_u32((struct nlattr *) attr));
1112                         break;
1113                 case IFLA_LINKMODE:
1114                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1115                                            nla_get_u32((struct nlattr *) attr));
1116                         break;
1117                 }
1118                 attr = RTA_NEXT(attr, attrlen);
1119         }
1120         extra[sizeof(extra) - 1] = '\0';
1121
1122         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1123                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1124                    ifi->ifi_flags,
1125                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1126                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1127                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1128                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1129
1130         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1131                 wpa_driver_nl80211_event_dellink(drv, ifname);
1132
1133         if (ifi->ifi_family == AF_BRIDGE && brid) {
1134                 /* device has been removed from bridge */
1135                 char namebuf[IFNAMSIZ];
1136
1137                 if (!if_indextoname(brid, namebuf)) {
1138                         wpa_printf(MSG_DEBUG,
1139                                    "nl80211: Could not find bridge ifname for ifindex %u",
1140                                    brid);
1141                 } else {
1142                         wpa_printf(MSG_DEBUG,
1143                                    "nl80211: Remove ifindex %u for bridge %s",
1144                                    brid, namebuf);
1145                 }
1146                 del_ifidx(drv, brid);
1147         }
1148 }
1149
1150
1151 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1152 {
1153         struct nl_msg *msg;
1154         int ret;
1155         struct nl80211_bss_info_arg arg;
1156
1157         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1158         os_memset(&arg, 0, sizeof(arg));
1159         arg.drv = drv;
1160         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1161         if (ret == 0) {
1162                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1163                         arg.ibss_freq : arg.assoc_freq;
1164                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1165                            "associated BSS from scan results: %u MHz", freq);
1166                 if (freq)
1167                         drv->assoc_freq = freq;
1168                 return drv->assoc_freq;
1169         }
1170         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1171                    "(%s)", ret, strerror(-ret));
1172         return drv->assoc_freq;
1173 }
1174
1175
1176 static int get_link_signal(struct nl_msg *msg, void *arg)
1177 {
1178         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1179         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1180         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1181         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1182                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1183                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1184         };
1185         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1186         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1187                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1188                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1189                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1190                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1191         };
1192         struct wpa_signal_info *sig_change = arg;
1193
1194         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1195                   genlmsg_attrlen(gnlh, 0), NULL);
1196         if (!tb[NL80211_ATTR_STA_INFO] ||
1197             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1198                              tb[NL80211_ATTR_STA_INFO], policy))
1199                 return NL_SKIP;
1200         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1201                 return NL_SKIP;
1202
1203         sig_change->current_signal =
1204                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1205
1206         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1207                 sig_change->avg_signal =
1208                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1209         else
1210                 sig_change->avg_signal = 0;
1211
1212         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1213                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1214                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1215                                      rate_policy)) {
1216                         sig_change->current_txrate = 0;
1217                 } else {
1218                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1219                                 sig_change->current_txrate =
1220                                         nla_get_u16(rinfo[
1221                                              NL80211_RATE_INFO_BITRATE]) * 100;
1222                         }
1223                 }
1224         }
1225
1226         return NL_SKIP;
1227 }
1228
1229
1230 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1231                             struct wpa_signal_info *sig)
1232 {
1233         struct nl_msg *msg;
1234
1235         sig->current_signal = -9999;
1236         sig->current_txrate = 0;
1237
1238         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1239             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1240                 nlmsg_free(msg);
1241                 return -ENOBUFS;
1242         }
1243
1244         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1245 }
1246
1247
1248 static int get_link_noise(struct nl_msg *msg, void *arg)
1249 {
1250         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1251         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1252         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1253         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1254                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1255                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1256         };
1257         struct wpa_signal_info *sig_change = arg;
1258
1259         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1260                   genlmsg_attrlen(gnlh, 0), NULL);
1261
1262         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1263                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1264                 return NL_SKIP;
1265         }
1266
1267         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1268                              tb[NL80211_ATTR_SURVEY_INFO],
1269                              survey_policy)) {
1270                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1271                            "attributes!");
1272                 return NL_SKIP;
1273         }
1274
1275         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1276                 return NL_SKIP;
1277
1278         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1279             sig_change->frequency)
1280                 return NL_SKIP;
1281
1282         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1283                 return NL_SKIP;
1284
1285         sig_change->current_noise =
1286                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1287
1288         return NL_SKIP;
1289 }
1290
1291
1292 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1293                            struct wpa_signal_info *sig_change)
1294 {
1295         struct nl_msg *msg;
1296
1297         sig_change->current_noise = 9999;
1298         sig_change->frequency = drv->assoc_freq;
1299
1300         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1301         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1302 }
1303
1304
1305 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1306                                              void *handle)
1307 {
1308         struct nl_cb *cb = eloop_ctx;
1309         int res;
1310
1311         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1312
1313         res = nl_recvmsgs(handle, cb);
1314         if (res < 0) {
1315                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1316                            __func__, res);
1317         }
1318 }
1319
1320
1321 /**
1322  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1323  * @priv: driver_nl80211 private data
1324  * @alpha2_arg: country to which to switch to
1325  * Returns: 0 on success, -1 on failure
1326  *
1327  * This asks nl80211 to set the regulatory domain for given
1328  * country ISO / IEC alpha2.
1329  */
1330 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1331 {
1332         struct i802_bss *bss = priv;
1333         struct wpa_driver_nl80211_data *drv = bss->drv;
1334         char alpha2[3];
1335         struct nl_msg *msg;
1336
1337         msg = nlmsg_alloc();
1338         if (!msg)
1339                 return -ENOMEM;
1340
1341         alpha2[0] = alpha2_arg[0];
1342         alpha2[1] = alpha2_arg[1];
1343         alpha2[2] = '\0';
1344
1345         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1346             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1347                 nlmsg_free(msg);
1348                 return -EINVAL;
1349         }
1350         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1351                 return -EINVAL;
1352         return 0;
1353 }
1354
1355
1356 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1357 {
1358         char *alpha2 = arg;
1359         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1360         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1361
1362         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1363                   genlmsg_attrlen(gnlh, 0), NULL);
1364         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1365                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1366                 return NL_SKIP;
1367         }
1368         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1369         return NL_SKIP;
1370 }
1371
1372
1373 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1374 {
1375         struct i802_bss *bss = priv;
1376         struct wpa_driver_nl80211_data *drv = bss->drv;
1377         struct nl_msg *msg;
1378         int ret;
1379
1380         msg = nlmsg_alloc();
1381         if (!msg)
1382                 return -ENOMEM;
1383
1384         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1385         alpha2[0] = '\0';
1386         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1387         if (!alpha2[0])
1388                 ret = -1;
1389
1390         return ret;
1391 }
1392
1393
1394 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1395 {
1396         int ret;
1397
1398         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1399         if (global->nl_cb == NULL) {
1400                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1401                            "callbacks");
1402                 return -1;
1403         }
1404
1405         global->nl = nl_create_handle(global->nl_cb, "nl");
1406         if (global->nl == NULL)
1407                 goto err;
1408
1409         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1410         if (global->nl80211_id < 0) {
1411                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1412                            "found");
1413                 goto err;
1414         }
1415
1416         global->nl_event = nl_create_handle(global->nl_cb, "event");
1417         if (global->nl_event == NULL)
1418                 goto err;
1419
1420         ret = nl_get_multicast_id(global, "nl80211", "scan");
1421         if (ret >= 0)
1422                 ret = nl_socket_add_membership(global->nl_event, ret);
1423         if (ret < 0) {
1424                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1425                            "membership for scan events: %d (%s)",
1426                            ret, strerror(-ret));
1427                 goto err;
1428         }
1429
1430         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1431         if (ret >= 0)
1432                 ret = nl_socket_add_membership(global->nl_event, ret);
1433         if (ret < 0) {
1434                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1435                            "membership for mlme events: %d (%s)",
1436                            ret, strerror(-ret));
1437                 goto err;
1438         }
1439
1440         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1441         if (ret >= 0)
1442                 ret = nl_socket_add_membership(global->nl_event, ret);
1443         if (ret < 0) {
1444                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1445                            "membership for regulatory events: %d (%s)",
1446                            ret, strerror(-ret));
1447                 /* Continue without regulatory events */
1448         }
1449
1450         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1451         if (ret >= 0)
1452                 ret = nl_socket_add_membership(global->nl_event, ret);
1453         if (ret < 0) {
1454                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1455                            "membership for vendor events: %d (%s)",
1456                            ret, strerror(-ret));
1457                 /* Continue without vendor events */
1458         }
1459
1460         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1461                   no_seq_check, NULL);
1462         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1463                   process_global_event, global);
1464
1465         nl80211_register_eloop_read(&global->nl_event,
1466                                     wpa_driver_nl80211_event_receive,
1467                                     global->nl_cb);
1468
1469         return 0;
1470
1471 err:
1472         nl_destroy_handles(&global->nl_event);
1473         nl_destroy_handles(&global->nl);
1474         nl_cb_put(global->nl_cb);
1475         global->nl_cb = NULL;
1476         return -1;
1477 }
1478
1479
1480 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1481 {
1482         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1483         /*
1484          * This may be for any interface; use ifdown event to disable
1485          * interface.
1486          */
1487 }
1488
1489
1490 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1491 {
1492         struct wpa_driver_nl80211_data *drv = ctx;
1493         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1494         if (i802_set_iface_flags(drv->first_bss, 1)) {
1495                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1496                            "after rfkill unblock");
1497                 return;
1498         }
1499         /* rtnetlink ifup handler will report interface as enabled */
1500 }
1501
1502
1503 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1504                                                       void *eloop_ctx,
1505                                                       void *handle)
1506 {
1507         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1508         u8 data[2048];
1509         struct msghdr msg;
1510         struct iovec entry;
1511         u8 control[512];
1512         struct cmsghdr *cmsg;
1513         int res, found_ee = 0, found_wifi = 0, acked = 0;
1514         union wpa_event_data event;
1515
1516         memset(&msg, 0, sizeof(msg));
1517         msg.msg_iov = &entry;
1518         msg.msg_iovlen = 1;
1519         entry.iov_base = data;
1520         entry.iov_len = sizeof(data);
1521         msg.msg_control = &control;
1522         msg.msg_controllen = sizeof(control);
1523
1524         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1525         /* if error or not fitting 802.3 header, return */
1526         if (res < 14)
1527                 return;
1528
1529         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1530         {
1531                 if (cmsg->cmsg_level == SOL_SOCKET &&
1532                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1533                         int *ack;
1534
1535                         found_wifi = 1;
1536                         ack = (void *)CMSG_DATA(cmsg);
1537                         acked = *ack;
1538                 }
1539
1540                 if (cmsg->cmsg_level == SOL_PACKET &&
1541                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1542                         struct sock_extended_err *err =
1543                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1544
1545                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1546                                 found_ee = 1;
1547                 }
1548         }
1549
1550         if (!found_ee || !found_wifi)
1551                 return;
1552
1553         memset(&event, 0, sizeof(event));
1554         event.eapol_tx_status.dst = data;
1555         event.eapol_tx_status.data = data + 14;
1556         event.eapol_tx_status.data_len = res - 14;
1557         event.eapol_tx_status.ack = acked;
1558         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1559 }
1560
1561
1562 static int nl80211_init_bss(struct i802_bss *bss)
1563 {
1564         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1565         if (!bss->nl_cb)
1566                 return -1;
1567
1568         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1569                   no_seq_check, NULL);
1570         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1571                   process_bss_event, bss);
1572
1573         return 0;
1574 }
1575
1576
1577 static void nl80211_destroy_bss(struct i802_bss *bss)
1578 {
1579         nl_cb_put(bss->nl_cb);
1580         bss->nl_cb = NULL;
1581 }
1582
1583
1584 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1585                                           void *global_priv, int hostapd,
1586                                           const u8 *set_addr,
1587                                           const char *driver_params)
1588 {
1589         struct wpa_driver_nl80211_data *drv;
1590         struct rfkill_config *rcfg;
1591         struct i802_bss *bss;
1592
1593         if (global_priv == NULL)
1594                 return NULL;
1595         drv = os_zalloc(sizeof(*drv));
1596         if (drv == NULL)
1597                 return NULL;
1598         drv->global = global_priv;
1599         drv->ctx = ctx;
1600         drv->hostapd = !!hostapd;
1601         drv->eapol_sock = -1;
1602
1603         /*
1604          * There is no driver capability flag for this, so assume it is
1605          * supported and disable this on first attempt to use if the driver
1606          * rejects the command due to missing support.
1607          */
1608         drv->set_rekey_offload = 1;
1609
1610         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1611         drv->if_indices = drv->default_if_indices;
1612
1613         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1614         if (!drv->first_bss) {
1615                 os_free(drv);
1616                 return NULL;
1617         }
1618         bss = drv->first_bss;
1619         bss->drv = drv;
1620         bss->ctx = ctx;
1621
1622         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1623         drv->monitor_ifidx = -1;
1624         drv->monitor_sock = -1;
1625         drv->eapol_tx_sock = -1;
1626         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1627
1628         if (nl80211_init_bss(bss))
1629                 goto failed;
1630
1631         rcfg = os_zalloc(sizeof(*rcfg));
1632         if (rcfg == NULL)
1633                 goto failed;
1634         rcfg->ctx = drv;
1635         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1636         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1637         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1638         drv->rfkill = rfkill_init(rcfg);
1639         if (drv->rfkill == NULL) {
1640                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1641                 os_free(rcfg);
1642         }
1643
1644         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1645                 drv->start_iface_up = 1;
1646
1647         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1648                 goto failed;
1649
1650         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1651         if (drv->eapol_tx_sock < 0)
1652                 goto failed;
1653
1654         if (drv->data_tx_status) {
1655                 int enabled = 1;
1656
1657                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1658                                &enabled, sizeof(enabled)) < 0) {
1659                         wpa_printf(MSG_DEBUG,
1660                                 "nl80211: wifi status sockopt failed\n");
1661                         drv->data_tx_status = 0;
1662                         if (!drv->use_monitor)
1663                                 drv->capa.flags &=
1664                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1665                 } else {
1666                         eloop_register_read_sock(drv->eapol_tx_sock,
1667                                 wpa_driver_nl80211_handle_eapol_tx_status,
1668                                 drv, NULL);
1669                 }
1670         }
1671
1672         if (drv->global) {
1673                 dl_list_add(&drv->global->interfaces, &drv->list);
1674                 drv->in_interface_list = 1;
1675         }
1676
1677         return bss;
1678
1679 failed:
1680         wpa_driver_nl80211_deinit(bss);
1681         return NULL;
1682 }
1683
1684
1685 /**
1686  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1687  * @ctx: context to be used when calling wpa_supplicant functions,
1688  * e.g., wpa_supplicant_event()
1689  * @ifname: interface name, e.g., wlan0
1690  * @global_priv: private driver global data from global_init()
1691  * Returns: Pointer to private data, %NULL on failure
1692  */
1693 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1694                                       void *global_priv)
1695 {
1696         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1697                                            NULL);
1698 }
1699
1700
1701 static int nl80211_register_frame(struct i802_bss *bss,
1702                                   struct nl_handle *nl_handle,
1703                                   u16 type, const u8 *match, size_t match_len)
1704 {
1705         struct wpa_driver_nl80211_data *drv = bss->drv;
1706         struct nl_msg *msg;
1707         int ret;
1708         char buf[30];
1709
1710         buf[0] = '\0';
1711         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1712         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1713                    type, fc2str(type), nl_handle, buf);
1714
1715         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1716             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1717             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1718                 nlmsg_free(msg);
1719                 return -1;
1720         }
1721
1722         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1723         if (ret) {
1724                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1725                            "failed (type=%u): ret=%d (%s)",
1726                            type, ret, strerror(-ret));
1727                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1728                             match, match_len);
1729         }
1730         return ret;
1731 }
1732
1733
1734 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1735 {
1736         if (bss->nl_mgmt) {
1737                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1738                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1739                 return -1;
1740         }
1741
1742         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1743         if (bss->nl_mgmt == NULL)
1744                 return -1;
1745
1746         return 0;
1747 }
1748
1749
1750 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1751 {
1752         nl80211_register_eloop_read(&bss->nl_mgmt,
1753                                     wpa_driver_nl80211_event_receive,
1754                                     bss->nl_cb);
1755 }
1756
1757
1758 static int nl80211_register_action_frame(struct i802_bss *bss,
1759                                          const u8 *match, size_t match_len)
1760 {
1761         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1762         return nl80211_register_frame(bss, bss->nl_mgmt,
1763                                       type, match, match_len);
1764 }
1765
1766
1767 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1768 {
1769         struct wpa_driver_nl80211_data *drv = bss->drv;
1770         int ret = 0;
1771
1772         if (nl80211_alloc_mgmt_handle(bss))
1773                 return -1;
1774         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1775                    "handle %p", bss->nl_mgmt);
1776
1777         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1778                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1779
1780                 /* register for any AUTH message */
1781                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1782         }
1783
1784 #ifdef CONFIG_INTERWORKING
1785         /* QoS Map Configure */
1786         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1787                 ret = -1;
1788 #endif /* CONFIG_INTERWORKING */
1789 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1790         /* GAS Initial Request */
1791         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1792                 ret = -1;
1793         /* GAS Initial Response */
1794         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1795                 ret = -1;
1796         /* GAS Comeback Request */
1797         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1798                 ret = -1;
1799         /* GAS Comeback Response */
1800         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1801                 ret = -1;
1802         /* Protected GAS Initial Request */
1803         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1804                 ret = -1;
1805         /* Protected GAS Initial Response */
1806         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1807                 ret = -1;
1808         /* Protected GAS Comeback Request */
1809         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1810                 ret = -1;
1811         /* Protected GAS Comeback Response */
1812         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1813                 ret = -1;
1814 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1815 #ifdef CONFIG_P2P
1816         /* P2P Public Action */
1817         if (nl80211_register_action_frame(bss,
1818                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1819                                           6) < 0)
1820                 ret = -1;
1821         /* P2P Action */
1822         if (nl80211_register_action_frame(bss,
1823                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1824                                           5) < 0)
1825                 ret = -1;
1826 #endif /* CONFIG_P2P */
1827 #ifdef CONFIG_IEEE80211W
1828         /* SA Query Response */
1829         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1830                 ret = -1;
1831 #endif /* CONFIG_IEEE80211W */
1832 #ifdef CONFIG_TDLS
1833         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1834                 /* TDLS Discovery Response */
1835                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1836                     0)
1837                         ret = -1;
1838         }
1839 #endif /* CONFIG_TDLS */
1840
1841         /* FT Action frames */
1842         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1843                 ret = -1;
1844         else
1845                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1846                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1847
1848         /* WNM - BSS Transition Management Request */
1849         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1850                 ret = -1;
1851         /* WNM-Sleep Mode Response */
1852         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1853                 ret = -1;
1854
1855 #ifdef CONFIG_HS20
1856         /* WNM-Notification */
1857         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1858                 ret = -1;
1859 #endif /* CONFIG_HS20 */
1860
1861         /* WMM-AC ADDTS Response */
1862         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1863                 ret = -1;
1864
1865         /* WMM-AC DELTS */
1866         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1867                 ret = -1;
1868
1869         /* Radio Measurement - Neighbor Report Response */
1870         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1871                 ret = -1;
1872
1873         /* Radio Measurement - Link Measurement Request */
1874         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1875             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1876                 ret = -1;
1877
1878         nl80211_mgmt_handle_register_eloop(bss);
1879
1880         return ret;
1881 }
1882
1883
1884 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1885 {
1886         int ret = 0;
1887
1888         if (nl80211_alloc_mgmt_handle(bss))
1889                 return -1;
1890
1891         wpa_printf(MSG_DEBUG,
1892                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1893                    bss->nl_mgmt);
1894
1895         /* Auth frames for mesh SAE */
1896         if (nl80211_register_frame(bss, bss->nl_mgmt,
1897                                    (WLAN_FC_TYPE_MGMT << 2) |
1898                                    (WLAN_FC_STYPE_AUTH << 4),
1899                                    NULL, 0) < 0)
1900                 ret = -1;
1901
1902         /* Mesh peering open */
1903         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1904                 ret = -1;
1905         /* Mesh peering confirm */
1906         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1907                 ret = -1;
1908         /* Mesh peering close */
1909         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1910                 ret = -1;
1911
1912         nl80211_mgmt_handle_register_eloop(bss);
1913
1914         return ret;
1915 }
1916
1917
1918 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1919 {
1920         struct nl_msg *msg;
1921         int ret;
1922
1923         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1924         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1925         if (ret) {
1926                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1927                            "failed: ret=%d (%s)",
1928                            ret, strerror(-ret));
1929         }
1930         return ret;
1931 }
1932
1933
1934 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1935 {
1936         static const int stypes[] = {
1937                 WLAN_FC_STYPE_AUTH,
1938                 WLAN_FC_STYPE_ASSOC_REQ,
1939                 WLAN_FC_STYPE_REASSOC_REQ,
1940                 WLAN_FC_STYPE_DISASSOC,
1941                 WLAN_FC_STYPE_DEAUTH,
1942                 WLAN_FC_STYPE_ACTION,
1943                 WLAN_FC_STYPE_PROBE_REQ,
1944 /* Beacon doesn't work as mac80211 doesn't currently allow
1945  * it, but it wouldn't really be the right thing anyway as
1946  * it isn't per interface ... maybe just dump the scan
1947  * results periodically for OLBC?
1948  */
1949                 /* WLAN_FC_STYPE_BEACON, */
1950         };
1951         unsigned int i;
1952
1953         if (nl80211_alloc_mgmt_handle(bss))
1954                 return -1;
1955         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1956                    "handle %p", bss->nl_mgmt);
1957
1958         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
1959                 if (nl80211_register_frame(bss, bss->nl_mgmt,
1960                                            (WLAN_FC_TYPE_MGMT << 2) |
1961                                            (stypes[i] << 4),
1962                                            NULL, 0) < 0) {
1963                         goto out_err;
1964                 }
1965         }
1966
1967         if (nl80211_register_spurious_class3(bss))
1968                 goto out_err;
1969
1970         if (nl80211_get_wiphy_data_ap(bss) == NULL)
1971                 goto out_err;
1972
1973         nl80211_mgmt_handle_register_eloop(bss);
1974         return 0;
1975
1976 out_err:
1977         nl_destroy_handles(&bss->nl_mgmt);
1978         return -1;
1979 }
1980
1981
1982 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
1983 {
1984         if (nl80211_alloc_mgmt_handle(bss))
1985                 return -1;
1986         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1987                    "handle %p (device SME)", bss->nl_mgmt);
1988
1989         if (nl80211_register_frame(bss, bss->nl_mgmt,
1990                                    (WLAN_FC_TYPE_MGMT << 2) |
1991                                    (WLAN_FC_STYPE_ACTION << 4),
1992                                    NULL, 0) < 0)
1993                 goto out_err;
1994
1995         nl80211_mgmt_handle_register_eloop(bss);
1996         return 0;
1997
1998 out_err:
1999         nl_destroy_handles(&bss->nl_mgmt);
2000         return -1;
2001 }
2002
2003
2004 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2005 {
2006         if (bss->nl_mgmt == NULL)
2007                 return;
2008         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2009                    "(%s)", bss->nl_mgmt, reason);
2010         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2011
2012         nl80211_put_wiphy_data_ap(bss);
2013 }
2014
2015
2016 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2017 {
2018         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2019 }
2020
2021
2022 static void nl80211_del_p2pdev(struct i802_bss *bss)
2023 {
2024         struct nl_msg *msg;
2025         int ret;
2026
2027         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2028         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2029
2030         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2031                    bss->ifname, (long long unsigned int) bss->wdev_id,
2032                    strerror(-ret));
2033 }
2034
2035
2036 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2037 {
2038         struct nl_msg *msg;
2039         int ret;
2040
2041         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2042                               NL80211_CMD_STOP_P2P_DEVICE);
2043         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2044
2045         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2046                    start ? "Start" : "Stop",
2047                    bss->ifname, (long long unsigned int) bss->wdev_id,
2048                    strerror(-ret));
2049         return ret;
2050 }
2051
2052
2053 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2054 {
2055         enum nl80211_iftype nlmode;
2056
2057         nlmode = nl80211_get_ifmode(bss);
2058         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2059                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2060                                              bss->ifname, up);
2061         }
2062
2063         /* P2P Device has start/stop which is equivalent */
2064         return nl80211_set_p2pdev(bss, up);
2065 }
2066
2067
2068 static int
2069 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2070                                    const u8 *set_addr, int first,
2071                                    const char *driver_params)
2072 {
2073         struct i802_bss *bss = drv->first_bss;
2074         int send_rfkill_event = 0;
2075         enum nl80211_iftype nlmode;
2076
2077         drv->ifindex = if_nametoindex(bss->ifname);
2078         bss->ifindex = drv->ifindex;
2079         bss->wdev_id = drv->global->if_add_wdevid;
2080         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2081
2082         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2083         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2084         drv->global->if_add_wdevid_set = 0;
2085
2086         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2087                 bss->static_ap = 1;
2088
2089         if (wpa_driver_nl80211_capa(drv))
2090                 return -1;
2091
2092         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2093                 return -1;
2094
2095         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2096                    bss->ifname, drv->phyname);
2097
2098         if (set_addr &&
2099             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2100              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2101                                 set_addr)))
2102                 return -1;
2103
2104         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2105                 drv->start_mode_ap = 1;
2106
2107         if (drv->hostapd || bss->static_ap)
2108                 nlmode = NL80211_IFTYPE_AP;
2109         else if (bss->if_dynamic)
2110                 nlmode = nl80211_get_ifmode(bss);
2111         else
2112                 nlmode = NL80211_IFTYPE_STATION;
2113
2114         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2115                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2116                 return -1;
2117         }
2118
2119         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2120                 nl80211_get_macaddr(bss);
2121
2122         if (!rfkill_is_blocked(drv->rfkill)) {
2123                 int ret = i802_set_iface_flags(bss, 1);
2124                 if (ret) {
2125                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2126                                    "interface '%s' UP", bss->ifname);
2127                         return ret;
2128                 }
2129                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2130                         return ret;
2131         } else {
2132                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2133                            "interface '%s' due to rfkill", bss->ifname);
2134                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2135                         return 0;
2136                 drv->if_disabled = 1;
2137                 send_rfkill_event = 1;
2138         }
2139
2140         if (!drv->hostapd)
2141                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2142                                        1, IF_OPER_DORMANT);
2143
2144         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2145                                bss->addr))
2146                 return -1;
2147         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2148
2149         if (send_rfkill_event) {
2150                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2151                                        drv, drv->ctx);
2152         }
2153
2154         return 0;
2155 }
2156
2157
2158 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2159 {
2160         struct nl_msg *msg;
2161
2162         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2163                    drv->ifindex);
2164         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2165         return send_and_recv_msgs(drv, msg, NULL, NULL);
2166 }
2167
2168
2169 /**
2170  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2171  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2172  *
2173  * Shut down driver interface and processing of driver events. Free
2174  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2175  */
2176 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2177 {
2178         struct wpa_driver_nl80211_data *drv = bss->drv;
2179
2180         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2181                    bss->ifname, drv->disabled_11b_rates);
2182
2183         bss->in_deinit = 1;
2184         if (drv->data_tx_status)
2185                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2186         if (drv->eapol_tx_sock >= 0)
2187                 close(drv->eapol_tx_sock);
2188
2189         if (bss->nl_preq)
2190                 wpa_driver_nl80211_probe_req_report(bss, 0);
2191         if (bss->added_if_into_bridge) {
2192                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2193                                     bss->ifname) < 0)
2194                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2195                                    "interface %s from bridge %s: %s",
2196                                    bss->ifname, bss->brname, strerror(errno));
2197                 if (drv->rtnl_sk)
2198                         nl80211_handle_destroy(drv->rtnl_sk);
2199         }
2200         if (bss->added_bridge) {
2201                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2202                                           0) < 0)
2203                         wpa_printf(MSG_INFO,
2204                                    "nl80211: Could not set bridge %s down",
2205                                    bss->brname);
2206                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2207                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2208                                    "bridge %s: %s",
2209                                    bss->brname, strerror(errno));
2210         }
2211
2212         nl80211_remove_monitor_interface(drv);
2213
2214         if (is_ap_interface(drv->nlmode))
2215                 wpa_driver_nl80211_del_beacon(drv);
2216
2217         if (drv->eapol_sock >= 0) {
2218                 eloop_unregister_read_sock(drv->eapol_sock);
2219                 close(drv->eapol_sock);
2220         }
2221
2222         if (drv->if_indices != drv->default_if_indices)
2223                 os_free(drv->if_indices);
2224
2225         if (drv->disabled_11b_rates)
2226                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2227
2228         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2229                                IF_OPER_UP);
2230         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2231         rfkill_deinit(drv->rfkill);
2232
2233         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2234
2235         if (!drv->start_iface_up)
2236                 (void) i802_set_iface_flags(bss, 0);
2237
2238         if (drv->addr_changed) {
2239                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2240                                           0) < 0) {
2241                         wpa_printf(MSG_DEBUG,
2242                                    "nl80211: Could not set interface down to restore permanent MAC address");
2243                 }
2244                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2245                                        drv->perm_addr) < 0) {
2246                         wpa_printf(MSG_DEBUG,
2247                                    "nl80211: Could not restore permanent MAC address");
2248                 }
2249         }
2250
2251         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2252                 if (!drv->hostapd || !drv->start_mode_ap)
2253                         wpa_driver_nl80211_set_mode(bss,
2254                                                     NL80211_IFTYPE_STATION);
2255                 nl80211_mgmt_unsubscribe(bss, "deinit");
2256         } else {
2257                 nl80211_mgmt_unsubscribe(bss, "deinit");
2258                 nl80211_del_p2pdev(bss);
2259         }
2260
2261         nl80211_destroy_bss(drv->first_bss);
2262
2263         os_free(drv->filter_ssids);
2264
2265         os_free(drv->auth_ie);
2266
2267         if (drv->in_interface_list)
2268                 dl_list_del(&drv->list);
2269
2270         os_free(drv->extended_capa);
2271         os_free(drv->extended_capa_mask);
2272         os_free(drv->first_bss);
2273         os_free(drv);
2274 }
2275
2276
2277 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2278 {
2279         switch (alg) {
2280         case WPA_ALG_WEP:
2281                 if (key_len == 5)
2282                         return WLAN_CIPHER_SUITE_WEP40;
2283                 return WLAN_CIPHER_SUITE_WEP104;
2284         case WPA_ALG_TKIP:
2285                 return WLAN_CIPHER_SUITE_TKIP;
2286         case WPA_ALG_CCMP:
2287                 return WLAN_CIPHER_SUITE_CCMP;
2288         case WPA_ALG_GCMP:
2289                 return WLAN_CIPHER_SUITE_GCMP;
2290         case WPA_ALG_CCMP_256:
2291                 return WLAN_CIPHER_SUITE_CCMP_256;
2292         case WPA_ALG_GCMP_256:
2293                 return WLAN_CIPHER_SUITE_GCMP_256;
2294         case WPA_ALG_IGTK:
2295                 return WLAN_CIPHER_SUITE_AES_CMAC;
2296         case WPA_ALG_BIP_GMAC_128:
2297                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2298         case WPA_ALG_BIP_GMAC_256:
2299                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2300         case WPA_ALG_BIP_CMAC_256:
2301                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2302         case WPA_ALG_SMS4:
2303                 return WLAN_CIPHER_SUITE_SMS4;
2304         case WPA_ALG_KRK:
2305                 return WLAN_CIPHER_SUITE_KRK;
2306         case WPA_ALG_NONE:
2307         case WPA_ALG_PMK:
2308                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2309                            alg);
2310                 return 0;
2311         }
2312
2313         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2314                    alg);
2315         return 0;
2316 }
2317
2318
2319 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2320 {
2321         switch (cipher) {
2322         case WPA_CIPHER_CCMP_256:
2323                 return WLAN_CIPHER_SUITE_CCMP_256;
2324         case WPA_CIPHER_GCMP_256:
2325                 return WLAN_CIPHER_SUITE_GCMP_256;
2326         case WPA_CIPHER_CCMP:
2327                 return WLAN_CIPHER_SUITE_CCMP;
2328         case WPA_CIPHER_GCMP:
2329                 return WLAN_CIPHER_SUITE_GCMP;
2330         case WPA_CIPHER_TKIP:
2331                 return WLAN_CIPHER_SUITE_TKIP;
2332         case WPA_CIPHER_WEP104:
2333                 return WLAN_CIPHER_SUITE_WEP104;
2334         case WPA_CIPHER_WEP40:
2335                 return WLAN_CIPHER_SUITE_WEP40;
2336         case WPA_CIPHER_GTK_NOT_USED:
2337                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2338         }
2339
2340         return 0;
2341 }
2342
2343
2344 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2345                                        int max_suites)
2346 {
2347         int num_suites = 0;
2348
2349         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2350                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2351         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2352                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2353         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2354                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2355         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2356                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2357         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2358                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2359         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2360                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2361         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2362                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2363
2364         return num_suites;
2365 }
2366
2367
2368 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2369                                   const u8 *key, size_t key_len)
2370 {
2371         struct nl_msg *msg;
2372         int ret;
2373
2374         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2375                 return 0;
2376
2377         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2378             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2379             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2380                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2381             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2382                 nl80211_nlmsg_clear(msg);
2383                 nlmsg_free(msg);
2384                 return -1;
2385         }
2386         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2387         if (ret) {
2388                 wpa_printf(MSG_DEBUG,
2389                            "nl80211: Key management set key failed: ret=%d (%s)",
2390                            ret, strerror(-ret));
2391         }
2392
2393         return ret;
2394 }
2395
2396
2397 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2398                                       enum wpa_alg alg, const u8 *addr,
2399                                       int key_idx, int set_tx,
2400                                       const u8 *seq, size_t seq_len,
2401                                       const u8 *key, size_t key_len)
2402 {
2403         struct wpa_driver_nl80211_data *drv = bss->drv;
2404         int ifindex;
2405         struct nl_msg *msg;
2406         int ret;
2407         int tdls = 0;
2408
2409         /* Ignore for P2P Device */
2410         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2411                 return 0;
2412
2413         ifindex = if_nametoindex(ifname);
2414         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2415                    "set_tx=%d seq_len=%lu key_len=%lu",
2416                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2417                    (unsigned long) seq_len, (unsigned long) key_len);
2418 #ifdef CONFIG_TDLS
2419         if (key_idx == -1) {
2420                 key_idx = 0;
2421                 tdls = 1;
2422         }
2423 #endif /* CONFIG_TDLS */
2424
2425         if (alg == WPA_ALG_PMK &&
2426             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2427                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2428                            __func__);
2429                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2430                 return ret;
2431         }
2432
2433         if (alg == WPA_ALG_NONE) {
2434                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2435                 if (!msg)
2436                         return -ENOBUFS;
2437         } else {
2438                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2439                 if (!msg ||
2440                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2441                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
2442                                 wpa_alg_to_cipher_suite(alg, key_len)))
2443                         goto fail;
2444                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2445         }
2446
2447         if (seq && seq_len) {
2448                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2449                         goto fail;
2450                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2451         }
2452
2453         if (addr && !is_broadcast_ether_addr(addr)) {
2454                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2455                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2456                         goto fail;
2457
2458                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2459                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2460                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2461                                         NL80211_KEYTYPE_GROUP))
2462                                 goto fail;
2463                 }
2464         } else if (addr && is_broadcast_ether_addr(addr)) {
2465                 struct nlattr *types;
2466
2467                 wpa_printf(MSG_DEBUG, "   broadcast key");
2468
2469                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2470                 if (!types ||
2471                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2472                         goto fail;
2473                 nla_nest_end(msg, types);
2474         }
2475         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2476                 goto fail;
2477
2478         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2479         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2480                 ret = 0;
2481         if (ret)
2482                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2483                            ret, strerror(-ret));
2484
2485         /*
2486          * If we failed or don't need to set the default TX key (below),
2487          * we're done here.
2488          */
2489         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2490                 return ret;
2491         if (is_ap_interface(drv->nlmode) && addr &&
2492             !is_broadcast_ether_addr(addr))
2493                 return ret;
2494
2495         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2496         if (!msg ||
2497             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2498             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2499                                alg == WPA_ALG_BIP_GMAC_128 ||
2500                                alg == WPA_ALG_BIP_GMAC_256 ||
2501                                alg == WPA_ALG_BIP_CMAC_256) ?
2502                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2503                          NL80211_ATTR_KEY_DEFAULT))
2504                 goto fail;
2505         if (addr && is_broadcast_ether_addr(addr)) {
2506                 struct nlattr *types;
2507
2508                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2509                 if (!types ||
2510                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2511                         goto fail;
2512                 nla_nest_end(msg, types);
2513         } else if (addr) {
2514                 struct nlattr *types;
2515
2516                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2517                 if (!types ||
2518                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2519                         goto fail;
2520                 nla_nest_end(msg, types);
2521         }
2522
2523         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2524         if (ret == -ENOENT)
2525                 ret = 0;
2526         if (ret)
2527                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2528                            "err=%d %s)", ret, strerror(-ret));
2529         return ret;
2530
2531 fail:
2532         nl80211_nlmsg_clear(msg);
2533         nlmsg_free(msg);
2534         return -ENOBUFS;
2535 }
2536
2537
2538 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2539                       int key_idx, int defkey,
2540                       const u8 *seq, size_t seq_len,
2541                       const u8 *key, size_t key_len)
2542 {
2543         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2544         if (!key_attr)
2545                 return -1;
2546
2547         if (defkey && alg == WPA_ALG_IGTK) {
2548                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2549                         return -1;
2550         } else if (defkey) {
2551                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2552                         return -1;
2553         }
2554
2555         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2556             nla_put_u32(msg, NL80211_KEY_CIPHER,
2557                         wpa_alg_to_cipher_suite(alg, key_len)) ||
2558             (seq && seq_len &&
2559              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2560             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2561                 return -1;
2562
2563         nla_nest_end(msg, key_attr);
2564
2565         return 0;
2566 }
2567
2568
2569 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2570                                  struct nl_msg *msg)
2571 {
2572         int i, privacy = 0;
2573         struct nlattr *nl_keys, *nl_key;
2574
2575         for (i = 0; i < 4; i++) {
2576                 if (!params->wep_key[i])
2577                         continue;
2578                 privacy = 1;
2579                 break;
2580         }
2581         if (params->wps == WPS_MODE_PRIVACY)
2582                 privacy = 1;
2583         if (params->pairwise_suite &&
2584             params->pairwise_suite != WPA_CIPHER_NONE)
2585                 privacy = 1;
2586
2587         if (!privacy)
2588                 return 0;
2589
2590         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2591                 return -ENOBUFS;
2592
2593         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2594         if (!nl_keys)
2595                 return -ENOBUFS;
2596
2597         for (i = 0; i < 4; i++) {
2598                 if (!params->wep_key[i])
2599                         continue;
2600
2601                 nl_key = nla_nest_start(msg, i);
2602                 if (!nl_key ||
2603                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2604                             params->wep_key[i]) ||
2605                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2606                                 params->wep_key_len[i] == 5 ?
2607                                 WLAN_CIPHER_SUITE_WEP40 :
2608                                 WLAN_CIPHER_SUITE_WEP104) ||
2609                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2610                     (i == params->wep_tx_keyidx &&
2611                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2612                         return -ENOBUFS;
2613
2614                 nla_nest_end(msg, nl_key);
2615         }
2616         nla_nest_end(msg, nl_keys);
2617
2618         return 0;
2619 }
2620
2621
2622 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2623                             const u8 *addr, int cmd, u16 reason_code,
2624                             int local_state_change)
2625 {
2626         int ret;
2627         struct nl_msg *msg;
2628
2629         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2630             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2631             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2632             (local_state_change &&
2633              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2634                 nlmsg_free(msg);
2635                 return -1;
2636         }
2637
2638         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2639         if (ret) {
2640                 wpa_dbg(drv->ctx, MSG_DEBUG,
2641                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2642                         reason_code, ret, strerror(-ret));
2643         }
2644         return ret;
2645 }
2646
2647
2648 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2649                                          int reason_code)
2650 {
2651         int ret;
2652
2653         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2654         nl80211_mark_disconnected(drv);
2655         /* Disconnect command doesn't need BSSID - it uses cached value */
2656         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2657                                       reason_code, 0);
2658         /*
2659          * For locally generated disconnect, supplicant already generates a
2660          * DEAUTH event, so ignore the event from NL80211.
2661          */
2662         drv->ignore_next_local_disconnect = ret == 0;
2663
2664         return ret;
2665 }
2666
2667
2668 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2669                                              const u8 *addr, int reason_code)
2670 {
2671         struct wpa_driver_nl80211_data *drv = bss->drv;
2672         int ret;
2673
2674         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2675                 nl80211_mark_disconnected(drv);
2676                 return nl80211_leave_ibss(drv, 1);
2677         }
2678         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2679                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2680         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2681                    __func__, MAC2STR(addr), reason_code);
2682         nl80211_mark_disconnected(drv);
2683         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2684                                       reason_code, 0);
2685         /*
2686          * For locally generated deauthenticate, supplicant already generates a
2687          * DEAUTH event, so ignore the event from NL80211.
2688          */
2689         drv->ignore_next_local_deauth = ret == 0;
2690         return ret;
2691 }
2692
2693
2694 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2695                                      struct wpa_driver_auth_params *params)
2696 {
2697         int i;
2698
2699         drv->auth_freq = params->freq;
2700         drv->auth_alg = params->auth_alg;
2701         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2702         drv->auth_local_state_change = params->local_state_change;
2703         drv->auth_p2p = params->p2p;
2704
2705         if (params->bssid)
2706                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2707         else
2708                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2709
2710         if (params->ssid) {
2711                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2712                 drv->auth_ssid_len = params->ssid_len;
2713         } else
2714                 drv->auth_ssid_len = 0;
2715
2716
2717         os_free(drv->auth_ie);
2718         drv->auth_ie = NULL;
2719         drv->auth_ie_len = 0;
2720         if (params->ie) {
2721                 drv->auth_ie = os_malloc(params->ie_len);
2722                 if (drv->auth_ie) {
2723                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2724                         drv->auth_ie_len = params->ie_len;
2725                 }
2726         }
2727
2728         for (i = 0; i < 4; i++) {
2729                 if (params->wep_key[i] && params->wep_key_len[i] &&
2730                     params->wep_key_len[i] <= 16) {
2731                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2732                                   params->wep_key_len[i]);
2733                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2734                 } else
2735                         drv->auth_wep_key_len[i] = 0;
2736         }
2737 }
2738
2739
2740 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2741 {
2742         struct wpa_driver_nl80211_data *drv = bss->drv;
2743
2744         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2745                 return;
2746
2747         /*
2748          * Looks like we failed to unmask 11b rates previously. This could
2749          * happen, e.g., if the interface was down at the point in time when a
2750          * P2P group was terminated.
2751          */
2752         wpa_printf(MSG_DEBUG,
2753                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2754                    bss->ifname);
2755         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2756 }
2757
2758
2759 static int wpa_driver_nl80211_authenticate(
2760         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2761 {
2762         struct wpa_driver_nl80211_data *drv = bss->drv;
2763         int ret = -1, i;
2764         struct nl_msg *msg;
2765         enum nl80211_auth_type type;
2766         enum nl80211_iftype nlmode;
2767         int count = 0;
2768         int is_retry;
2769
2770         nl80211_unmask_11b_rates(bss);
2771
2772         is_retry = drv->retry_auth;
2773         drv->retry_auth = 0;
2774         drv->ignore_deauth_event = 0;
2775
2776         nl80211_mark_disconnected(drv);
2777         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2778         if (params->bssid)
2779                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2780         else
2781                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2782         /* FIX: IBSS mode */
2783         nlmode = params->p2p ?
2784                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2785         if (drv->nlmode != nlmode &&
2786             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2787                 return -1;
2788
2789 retry:
2790         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2791                    drv->ifindex);
2792
2793         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2794         if (!msg)
2795                 goto fail;
2796
2797         for (i = 0; i < 4; i++) {
2798                 if (!params->wep_key[i])
2799                         continue;
2800                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2801                                            NULL, i,
2802                                            i == params->wep_tx_keyidx, NULL, 0,
2803                                            params->wep_key[i],
2804                                            params->wep_key_len[i]);
2805                 if (params->wep_tx_keyidx != i)
2806                         continue;
2807                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2808                                params->wep_key[i], params->wep_key_len[i]))
2809                         goto fail;
2810         }
2811
2812         if (params->bssid) {
2813                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2814                            MAC2STR(params->bssid));
2815                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2816                         goto fail;
2817         }
2818         if (params->freq) {
2819                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2820                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2821                         goto fail;
2822         }
2823         if (params->ssid) {
2824                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2825                                   params->ssid, params->ssid_len);
2826                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2827                             params->ssid))
2828                         goto fail;
2829         }
2830         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2831         if (params->ie &&
2832             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2833                 goto fail;
2834         if (params->sae_data) {
2835                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2836                             params->sae_data_len);
2837                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2838                             params->sae_data))
2839                         goto fail;
2840         }
2841         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2842                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2843         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2844                 type = NL80211_AUTHTYPE_SHARED_KEY;
2845         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2846                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2847         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2848                 type = NL80211_AUTHTYPE_FT;
2849         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2850                 type = NL80211_AUTHTYPE_SAE;
2851         else
2852                 goto fail;
2853         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2854         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2855                 goto fail;
2856         if (params->local_state_change) {
2857                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2858                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2859                         goto fail;
2860         }
2861
2862         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2863         msg = NULL;
2864         if (ret) {
2865                 wpa_dbg(drv->ctx, MSG_DEBUG,
2866                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2867                         ret, strerror(-ret));
2868                 count++;
2869                 if (ret == -EALREADY && count == 1 && params->bssid &&
2870                     !params->local_state_change) {
2871                         /*
2872                          * mac80211 does not currently accept new
2873                          * authentication if we are already authenticated. As a
2874                          * workaround, force deauthentication and try again.
2875                          */
2876                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2877                                    "after forced deauthentication");
2878                         drv->ignore_deauth_event = 1;
2879                         wpa_driver_nl80211_deauthenticate(
2880                                 bss, params->bssid,
2881                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2882                         nlmsg_free(msg);
2883                         goto retry;
2884                 }
2885
2886                 if (ret == -ENOENT && params->freq && !is_retry) {
2887                         /*
2888                          * cfg80211 has likely expired the BSS entry even
2889                          * though it was previously available in our internal
2890                          * BSS table. To recover quickly, start a single
2891                          * channel scan on the specified channel.
2892                          */
2893                         struct wpa_driver_scan_params scan;
2894                         int freqs[2];
2895
2896                         os_memset(&scan, 0, sizeof(scan));
2897                         scan.num_ssids = 1;
2898                         if (params->ssid) {
2899                                 scan.ssids[0].ssid = params->ssid;
2900                                 scan.ssids[0].ssid_len = params->ssid_len;
2901                         }
2902                         freqs[0] = params->freq;
2903                         freqs[1] = 0;
2904                         scan.freqs = freqs;
2905                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
2906                                    "channel scan to refresh cfg80211 BSS "
2907                                    "entry");
2908                         ret = wpa_driver_nl80211_scan(bss, &scan);
2909                         if (ret == 0) {
2910                                 nl80211_copy_auth_params(drv, params);
2911                                 drv->scan_for_auth = 1;
2912                         }
2913                 } else if (is_retry) {
2914                         /*
2915                          * Need to indicate this with an event since the return
2916                          * value from the retry is not delivered to core code.
2917                          */
2918                         union wpa_event_data event;
2919                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
2920                                    "failed");
2921                         os_memset(&event, 0, sizeof(event));
2922                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
2923                                   ETH_ALEN);
2924                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
2925                                              &event);
2926                 }
2927         } else {
2928                 wpa_printf(MSG_DEBUG,
2929                            "nl80211: Authentication request send successfully");
2930         }
2931
2932 fail:
2933         nlmsg_free(msg);
2934         return ret;
2935 }
2936
2937
2938 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
2939 {
2940         struct wpa_driver_auth_params params;
2941         struct i802_bss *bss = drv->first_bss;
2942         int i;
2943
2944         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
2945
2946         os_memset(&params, 0, sizeof(params));
2947         params.freq = drv->auth_freq;
2948         params.auth_alg = drv->auth_alg;
2949         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
2950         params.local_state_change = drv->auth_local_state_change;
2951         params.p2p = drv->auth_p2p;
2952
2953         if (!is_zero_ether_addr(drv->auth_bssid_))
2954                 params.bssid = drv->auth_bssid_;
2955
2956         if (drv->auth_ssid_len) {
2957                 params.ssid = drv->auth_ssid;
2958                 params.ssid_len = drv->auth_ssid_len;
2959         }
2960
2961         params.ie = drv->auth_ie;
2962         params.ie_len = drv->auth_ie_len;
2963
2964         for (i = 0; i < 4; i++) {
2965                 if (drv->auth_wep_key_len[i]) {
2966                         params.wep_key[i] = drv->auth_wep_key[i];
2967                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
2968                 }
2969         }
2970
2971         drv->retry_auth = 1;
2972         return wpa_driver_nl80211_authenticate(bss, &params);
2973 }
2974
2975
2976 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
2977                                          const void *data, size_t len,
2978                                          int encrypt, int noack,
2979                                          unsigned int freq, int no_cck,
2980                                          int offchanok, unsigned int wait_time)
2981 {
2982         struct wpa_driver_nl80211_data *drv = bss->drv;
2983         u64 cookie;
2984         int res;
2985
2986         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
2987                 freq = nl80211_get_assoc_freq(drv);
2988                 wpa_printf(MSG_DEBUG,
2989                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
2990                            freq);
2991         }
2992         if (freq == 0) {
2993                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
2994                            bss->freq);
2995                 freq = bss->freq;
2996         }
2997
2998         if (drv->use_monitor) {
2999                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3000                            freq, bss->freq);
3001                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3002         }
3003
3004         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3005         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3006                                      &cookie, no_cck, noack, offchanok);
3007         if (res == 0 && !noack) {
3008                 const struct ieee80211_mgmt *mgmt;
3009                 u16 fc;
3010
3011                 mgmt = (const struct ieee80211_mgmt *) data;
3012                 fc = le_to_host16(mgmt->frame_control);
3013                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3014                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3015                         wpa_printf(MSG_MSGDUMP,
3016                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3017                                    (long long unsigned int)
3018                                    drv->send_action_cookie,
3019                                    (long long unsigned int) cookie);
3020                         drv->send_action_cookie = cookie;
3021                 }
3022         }
3023
3024         return res;
3025 }
3026
3027
3028 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3029                                         size_t data_len, int noack,
3030                                         unsigned int freq, int no_cck,
3031                                         int offchanok,
3032                                         unsigned int wait_time)
3033 {
3034         struct wpa_driver_nl80211_data *drv = bss->drv;
3035         struct ieee80211_mgmt *mgmt;
3036         int encrypt = 1;
3037         u16 fc;
3038
3039         mgmt = (struct ieee80211_mgmt *) data;
3040         fc = le_to_host16(mgmt->frame_control);
3041         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3042                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3043                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3044                    fc, fc2str(fc), drv->nlmode);
3045
3046         if ((is_sta_interface(drv->nlmode) ||
3047              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3048             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3049             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3050                 /*
3051                  * The use of last_mgmt_freq is a bit of a hack,
3052                  * but it works due to the single-threaded nature
3053                  * of wpa_supplicant.
3054                  */
3055                 if (freq == 0) {
3056                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3057                                    drv->last_mgmt_freq);
3058                         freq = drv->last_mgmt_freq;
3059                 }
3060                 return nl80211_send_frame_cmd(bss, freq, 0,
3061                                               data, data_len, NULL, 1, noack,
3062                                               1);
3063         }
3064
3065         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3066                 if (freq == 0) {
3067                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3068                                    bss->freq);
3069                         freq = bss->freq;
3070                 }
3071                 return nl80211_send_frame_cmd(bss, freq,
3072                                               (int) freq == bss->freq ? 0 :
3073                                               wait_time,
3074                                               data, data_len,
3075                                               &drv->send_action_cookie,
3076                                               no_cck, noack, offchanok);
3077         }
3078
3079         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3080             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3081                 /*
3082                  * Only one of the authentication frame types is encrypted.
3083                  * In order for static WEP encryption to work properly (i.e.,
3084                  * to not encrypt the frame), we need to tell mac80211 about
3085                  * the frames that must not be encrypted.
3086                  */
3087                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3088                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3089                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3090                         encrypt = 0;
3091         }
3092
3093         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3094         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3095                                              noack, freq, no_cck, offchanok,
3096                                              wait_time);
3097 }
3098
3099
3100 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3101 {
3102         u8 rates[NL80211_MAX_SUPP_RATES];
3103         u8 rates_len = 0;
3104         int i;
3105
3106         if (!basic_rates)
3107                 return 0;
3108
3109         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3110                 rates[rates_len++] = basic_rates[i] / 5;
3111
3112         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3113 }
3114
3115
3116 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3117                            int slot, int ht_opmode, int ap_isolate,
3118                            const int *basic_rates)
3119 {
3120         struct wpa_driver_nl80211_data *drv = bss->drv;
3121         struct nl_msg *msg;
3122
3123         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3124             (cts >= 0 &&
3125              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3126             (preamble >= 0 &&
3127              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3128             (slot >= 0 &&
3129              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3130             (ht_opmode >= 0 &&
3131              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3132             (ap_isolate >= 0 &&
3133              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3134             nl80211_put_basic_rates(msg, basic_rates)) {
3135                 nlmsg_free(msg);
3136                 return -ENOBUFS;
3137         }
3138
3139         return send_and_recv_msgs(drv, msg, NULL, NULL);
3140 }
3141
3142
3143 static int wpa_driver_nl80211_set_acl(void *priv,
3144                                       struct hostapd_acl_params *params)
3145 {
3146         struct i802_bss *bss = priv;
3147         struct wpa_driver_nl80211_data *drv = bss->drv;
3148         struct nl_msg *msg;
3149         struct nlattr *acl;
3150         unsigned int i;
3151         int ret;
3152
3153         if (!(drv->capa.max_acl_mac_addrs))
3154                 return -ENOTSUP;
3155
3156         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3157                 return -ENOTSUP;
3158
3159         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3160                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3161
3162         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3163             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3164                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3165                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3166             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3167                 nlmsg_free(msg);
3168                 return -ENOMEM;
3169         }
3170
3171         for (i = 0; i < params->num_mac_acl; i++) {
3172                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3173                         nlmsg_free(msg);
3174                         return -ENOMEM;
3175                 }
3176         }
3177
3178         nla_nest_end(msg, acl);
3179
3180         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3181         if (ret) {
3182                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3183                            ret, strerror(-ret));
3184         }
3185
3186         return ret;
3187 }
3188
3189
3190 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3191 {
3192         if (beacon_int > 0) {
3193                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3194                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3195                                    beacon_int);
3196         }
3197
3198         return 0;
3199 }
3200
3201
3202 static int wpa_driver_nl80211_set_ap(void *priv,
3203                                      struct wpa_driver_ap_params *params)
3204 {
3205         struct i802_bss *bss = priv;
3206         struct wpa_driver_nl80211_data *drv = bss->drv;
3207         struct nl_msg *msg;
3208         u8 cmd = NL80211_CMD_NEW_BEACON;
3209         int ret;
3210         int beacon_set;
3211         int num_suites;
3212         int smps_mode;
3213         u32 suites[10], suite;
3214         u32 ver;
3215
3216         beacon_set = bss->beacon_set;
3217
3218         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3219                    beacon_set);
3220         if (beacon_set)
3221                 cmd = NL80211_CMD_SET_BEACON;
3222
3223         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3224                     params->head, params->head_len);
3225         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3226                     params->tail, params->tail_len);
3227         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3228         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3229         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3230         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3231                           params->ssid, params->ssid_len);
3232         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3233             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3234                     params->head) ||
3235             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3236                     params->tail) ||
3237             nl80211_put_beacon_int(msg, params->beacon_int) ||
3238             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3239             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3240                 goto fail;
3241         if (params->proberesp && params->proberesp_len) {
3242                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3243                             params->proberesp, params->proberesp_len);
3244                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3245                             params->proberesp))
3246                         goto fail;
3247         }
3248         switch (params->hide_ssid) {
3249         case NO_SSID_HIDING:
3250                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3251                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3252                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3253                         goto fail;
3254                 break;
3255         case HIDDEN_SSID_ZERO_LEN:
3256                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3257                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3258                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3259                         goto fail;
3260                 break;
3261         case HIDDEN_SSID_ZERO_CONTENTS:
3262                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3263                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3264                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3265                         goto fail;
3266                 break;
3267         }
3268         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3269         if (params->privacy &&
3270             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3271                 goto fail;
3272         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3273         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3274             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3275                 /* Leave out the attribute */
3276         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3277                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3278                                 NL80211_AUTHTYPE_SHARED_KEY))
3279                         goto fail;
3280         } else {
3281                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3282                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3283                         goto fail;
3284         }
3285
3286         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3287         ver = 0;
3288         if (params->wpa_version & WPA_PROTO_WPA)
3289                 ver |= NL80211_WPA_VERSION_1;
3290         if (params->wpa_version & WPA_PROTO_RSN)
3291                 ver |= NL80211_WPA_VERSION_2;
3292         if (ver &&
3293             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3294                 goto fail;
3295
3296         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3297                    params->key_mgmt_suites);
3298         num_suites = 0;
3299         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3300                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3301         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3302                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3303         if (num_suites &&
3304             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3305                     suites))
3306                 goto fail;
3307
3308         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3309             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3310             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3311                 goto fail;
3312
3313         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3314                    params->pairwise_ciphers);
3315         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3316                                                  suites, ARRAY_SIZE(suites));
3317         if (num_suites &&
3318             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3319                     num_suites * sizeof(u32), suites))
3320                 goto fail;
3321
3322         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3323                    params->group_cipher);
3324         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3325         if (suite &&
3326             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3327                 goto fail;
3328
3329         switch (params->smps_mode) {
3330         case HT_CAP_INFO_SMPS_DYNAMIC:
3331                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3332                 smps_mode = NL80211_SMPS_DYNAMIC;
3333                 break;
3334         case HT_CAP_INFO_SMPS_STATIC:
3335                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3336                 smps_mode = NL80211_SMPS_STATIC;
3337                 break;
3338         default:
3339                 /* invalid - fallback to smps off */
3340         case HT_CAP_INFO_SMPS_DISABLED:
3341                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3342                 smps_mode = NL80211_SMPS_OFF;
3343                 break;
3344         }
3345         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3346                 goto fail;
3347
3348         if (params->beacon_ies) {
3349                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3350                                 params->beacon_ies);
3351                 if (nla_put(msg, NL80211_ATTR_IE,
3352                             wpabuf_len(params->beacon_ies),
3353                             wpabuf_head(params->beacon_ies)))
3354                         goto fail;
3355         }
3356         if (params->proberesp_ies) {
3357                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3358                                 params->proberesp_ies);
3359                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3360                             wpabuf_len(params->proberesp_ies),
3361                             wpabuf_head(params->proberesp_ies)))
3362                         goto fail;
3363         }
3364         if (params->assocresp_ies) {
3365                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3366                                 params->assocresp_ies);
3367                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3368                             wpabuf_len(params->assocresp_ies),
3369                             wpabuf_head(params->assocresp_ies)))
3370                         goto fail;
3371         }
3372
3373         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3374                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3375                            params->ap_max_inactivity);
3376                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3377                                 params->ap_max_inactivity))
3378                         goto fail;
3379         }
3380
3381         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3382         if (ret) {
3383                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3384                            ret, strerror(-ret));
3385         } else {
3386                 bss->beacon_set = 1;
3387                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3388                                 params->short_slot_time, params->ht_opmode,
3389                                 params->isolate, params->basic_rates);
3390                 if (beacon_set && params->freq &&
3391                     params->freq->bandwidth != bss->bandwidth) {
3392                         wpa_printf(MSG_DEBUG,
3393                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3394                                    bss->ifname, bss->bandwidth,
3395                                    params->freq->bandwidth);
3396                         ret = nl80211_set_channel(bss, params->freq, 1);
3397                         if (ret) {
3398                                 wpa_printf(MSG_DEBUG,
3399                                            "nl80211: Frequency set failed: %d (%s)",
3400                                            ret, strerror(-ret));
3401                         } else {
3402                                 wpa_printf(MSG_DEBUG,
3403                                            "nl80211: Frequency set succeeded for ht2040 coex");
3404                                 bss->bandwidth = params->freq->bandwidth;
3405                         }
3406                 } else if (!beacon_set) {
3407                         /*
3408                          * cfg80211 updates the driver on frequence change in AP
3409                          * mode only at the point when beaconing is started, so
3410                          * set the initial value here.
3411                          */
3412                         bss->bandwidth = params->freq->bandwidth;
3413                 }
3414         }
3415         return ret;
3416 fail:
3417         nlmsg_free(msg);
3418         return -ENOBUFS;
3419 }
3420
3421
3422 static int nl80211_put_freq_params(struct nl_msg *msg,
3423                                    const struct hostapd_freq_params *freq)
3424 {
3425         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3426         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3427                 return -ENOBUFS;
3428
3429         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3430         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3431
3432         if (freq->vht_enabled) {
3433                 enum nl80211_chan_width cw;
3434
3435                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3436                 switch (freq->bandwidth) {
3437                 case 20:
3438                         cw = NL80211_CHAN_WIDTH_20;
3439                         break;
3440                 case 40:
3441                         cw = NL80211_CHAN_WIDTH_40;
3442                         break;
3443                 case 80:
3444                         if (freq->center_freq2)
3445                                 cw = NL80211_CHAN_WIDTH_80P80;
3446                         else
3447                                 cw = NL80211_CHAN_WIDTH_80;
3448                         break;
3449                 case 160:
3450                         cw = NL80211_CHAN_WIDTH_160;
3451                         break;
3452                 default:
3453                         return -EINVAL;
3454                 }
3455
3456                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3457                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3458                            freq->center_freq1);
3459                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3460                            freq->center_freq2);
3461                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3462                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3463                                 freq->center_freq1) ||
3464                     (freq->center_freq2 &&
3465                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3466                                  freq->center_freq2)))
3467                         return -ENOBUFS;
3468         } else if (freq->ht_enabled) {
3469                 enum nl80211_channel_type ct;
3470
3471                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3472                            freq->sec_channel_offset);
3473                 switch (freq->sec_channel_offset) {
3474                 case -1:
3475                         ct = NL80211_CHAN_HT40MINUS;
3476                         break;
3477                 case 1:
3478                         ct = NL80211_CHAN_HT40PLUS;
3479                         break;
3480                 default:
3481                         ct = NL80211_CHAN_HT20;
3482                         break;
3483                 }
3484
3485                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3486                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3487                         return -ENOBUFS;
3488         }
3489         return 0;
3490 }
3491
3492
3493 static int nl80211_set_channel(struct i802_bss *bss,
3494                                struct hostapd_freq_params *freq, int set_chan)
3495 {
3496         struct wpa_driver_nl80211_data *drv = bss->drv;
3497         struct nl_msg *msg;
3498         int ret;
3499
3500         wpa_printf(MSG_DEBUG,
3501                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3502                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3503                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3504
3505         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3506                               NL80211_CMD_SET_WIPHY);
3507         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3508                 nlmsg_free(msg);
3509                 return -1;
3510         }
3511
3512         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3513         if (ret == 0) {
3514                 bss->freq = freq->freq;
3515                 return 0;
3516         }
3517         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3518                    "%d (%s)", freq->freq, ret, strerror(-ret));
3519         return -1;
3520 }
3521
3522
3523 static u32 sta_flags_nl80211(int flags)
3524 {
3525         u32 f = 0;
3526
3527         if (flags & WPA_STA_AUTHORIZED)
3528                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3529         if (flags & WPA_STA_WMM)
3530                 f |= BIT(NL80211_STA_FLAG_WME);
3531         if (flags & WPA_STA_SHORT_PREAMBLE)
3532                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3533         if (flags & WPA_STA_MFP)
3534                 f |= BIT(NL80211_STA_FLAG_MFP);
3535         if (flags & WPA_STA_TDLS_PEER)
3536                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3537         if (flags & WPA_STA_AUTHENTICATED)
3538                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3539
3540         return f;
3541 }
3542
3543
3544 #ifdef CONFIG_MESH
3545 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3546 {
3547         switch (state) {
3548         case PLINK_LISTEN:
3549                 return NL80211_PLINK_LISTEN;
3550         case PLINK_OPEN_SENT:
3551                 return NL80211_PLINK_OPN_SNT;
3552         case PLINK_OPEN_RCVD:
3553                 return NL80211_PLINK_OPN_RCVD;
3554         case PLINK_CNF_RCVD:
3555                 return NL80211_PLINK_CNF_RCVD;
3556         case PLINK_ESTAB:
3557                 return NL80211_PLINK_ESTAB;
3558         case PLINK_HOLDING:
3559                 return NL80211_PLINK_HOLDING;
3560         case PLINK_BLOCKED:
3561                 return NL80211_PLINK_BLOCKED;
3562         default:
3563                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3564                            state);
3565         }
3566         return -1;
3567 }
3568 #endif /* CONFIG_MESH */
3569
3570
3571 static int wpa_driver_nl80211_sta_add(void *priv,
3572                                       struct hostapd_sta_add_params *params)
3573 {
3574         struct i802_bss *bss = priv;
3575         struct wpa_driver_nl80211_data *drv = bss->drv;
3576         struct nl_msg *msg;
3577         struct nl80211_sta_flag_update upd;
3578         int ret = -ENOBUFS;
3579
3580         if ((params->flags & WPA_STA_TDLS_PEER) &&
3581             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3582                 return -EOPNOTSUPP;
3583
3584         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3585                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3586         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3587                               NL80211_CMD_NEW_STATION);
3588         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3589                 goto fail;
3590
3591         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3592                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3593                             params->supp_rates, params->supp_rates_len);
3594                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3595                            params->capability);
3596                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3597                             params->supp_rates_len, params->supp_rates) ||
3598                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3599                                 params->capability))
3600                         goto fail;
3601
3602                 if (params->ht_capabilities) {
3603                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3604                                     (u8 *) params->ht_capabilities,
3605                                     sizeof(*params->ht_capabilities));
3606                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3607                                     sizeof(*params->ht_capabilities),
3608                                     params->ht_capabilities))
3609                                 goto fail;
3610                 }
3611
3612                 if (params->vht_capabilities) {
3613                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3614                                     (u8 *) params->vht_capabilities,
3615                                     sizeof(*params->vht_capabilities));
3616                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3617                                     sizeof(*params->vht_capabilities),
3618                                     params->vht_capabilities))
3619                                 goto fail;
3620                 }
3621
3622                 if (params->ext_capab) {
3623                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3624                                     params->ext_capab, params->ext_capab_len);
3625                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3626                                     params->ext_capab_len, params->ext_capab))
3627                                 goto fail;
3628                 }
3629         }
3630         if (!params->set) {
3631                 if (params->aid) {
3632                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3633                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3634                                 goto fail;
3635                 } else {
3636                         /*
3637                          * cfg80211 validates that AID is non-zero, so we have
3638                          * to make this a non-zero value for the TDLS case where
3639                          * a dummy STA entry is used for now.
3640                          */
3641                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3642                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3643                                 goto fail;
3644                 }
3645                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3646                            params->listen_interval);
3647                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3648                                 params->listen_interval))
3649                         goto fail;
3650         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3651                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3652                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3653                         goto fail;
3654         }
3655
3656         if (params->vht_opmode_enabled) {
3657                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3658                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3659                                params->vht_opmode))
3660                         goto fail;
3661         }
3662
3663         if (params->supp_channels) {
3664                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3665                             params->supp_channels, params->supp_channels_len);
3666                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3667                             params->supp_channels_len, params->supp_channels))
3668                         goto fail;
3669         }
3670
3671         if (params->supp_oper_classes) {
3672                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3673                             params->supp_oper_classes,
3674                             params->supp_oper_classes_len);
3675                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3676                             params->supp_oper_classes_len,
3677                             params->supp_oper_classes))
3678                         goto fail;
3679         }
3680
3681         os_memset(&upd, 0, sizeof(upd));
3682         upd.set = sta_flags_nl80211(params->flags);
3683         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3684         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3685                    upd.set, upd.mask);
3686         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3687                 goto fail;
3688
3689 #ifdef CONFIG_MESH
3690         if (params->plink_state &&
3691             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3692                        sta_plink_state_nl80211(params->plink_state)))
3693                 goto fail;
3694 #endif /* CONFIG_MESH */
3695
3696         if (params->flags & WPA_STA_WMM) {
3697                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3698
3699                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3700                 if (!wme ||
3701                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3702                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3703                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3704                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3705                                WMM_QOSINFO_STA_SP_MASK))
3706                         goto fail;
3707                 nla_nest_end(msg, wme);
3708         }
3709
3710         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3711         msg = NULL;
3712         if (ret)
3713                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3714                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3715                            strerror(-ret));
3716         if (ret == -EEXIST)
3717                 ret = 0;
3718 fail:
3719         nlmsg_free(msg);
3720         return ret;
3721 }
3722
3723
3724 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3725 {
3726 #ifdef CONFIG_LIBNL3_ROUTE
3727         struct wpa_driver_nl80211_data *drv = bss->drv;
3728         struct rtnl_neigh *rn;
3729         struct nl_addr *nl_addr;
3730         int err;
3731
3732         rn = rtnl_neigh_alloc();
3733         if (!rn)
3734                 return;
3735
3736         rtnl_neigh_set_family(rn, AF_BRIDGE);
3737         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3738         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3739         if (!nl_addr) {
3740                 rtnl_neigh_put(rn);
3741                 return;
3742         }
3743         rtnl_neigh_set_lladdr(rn, nl_addr);
3744
3745         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3746         if (err < 0) {
3747                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3748                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3749                            bss->ifindex, nl_geterror(err));
3750         } else {
3751                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3752                            MACSTR, MAC2STR(addr));
3753         }
3754
3755         nl_addr_put(nl_addr);
3756         rtnl_neigh_put(rn);
3757 #endif /* CONFIG_LIBNL3_ROUTE */
3758 }
3759
3760
3761 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3762                                          int deauth, u16 reason_code)
3763 {
3764         struct wpa_driver_nl80211_data *drv = bss->drv;
3765         struct nl_msg *msg;
3766         int ret;
3767
3768         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3769             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3770             (deauth == 0 &&
3771              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3772                         WLAN_FC_STYPE_DISASSOC)) ||
3773             (deauth == 1 &&
3774              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3775                         WLAN_FC_STYPE_DEAUTH)) ||
3776             (reason_code &&
3777              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3778                 nlmsg_free(msg);
3779                 return -ENOBUFS;
3780         }
3781
3782         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3783         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3784                    " --> %d (%s)",
3785                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3786
3787         if (drv->rtnl_sk)
3788                 rtnl_neigh_delete_fdb_entry(bss, addr);
3789
3790         if (ret == -ENOENT)
3791                 return 0;
3792         return ret;
3793 }
3794
3795
3796 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3797 {
3798         struct nl_msg *msg;
3799         struct wpa_driver_nl80211_data *drv2;
3800
3801         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3802
3803         /* stop listening for EAPOL on this interface */
3804         dl_list_for_each(drv2, &drv->global->interfaces,
3805                          struct wpa_driver_nl80211_data, list)
3806                 del_ifidx(drv2, ifidx);
3807
3808         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3809         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3810                 return;
3811         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3812 }
3813
3814
3815 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3816 {
3817         switch (mode) {
3818         case NL80211_IFTYPE_ADHOC:
3819                 return "ADHOC";
3820         case NL80211_IFTYPE_STATION:
3821                 return "STATION";
3822         case NL80211_IFTYPE_AP:
3823                 return "AP";
3824         case NL80211_IFTYPE_AP_VLAN:
3825                 return "AP_VLAN";
3826         case NL80211_IFTYPE_WDS:
3827                 return "WDS";
3828         case NL80211_IFTYPE_MONITOR:
3829                 return "MONITOR";
3830         case NL80211_IFTYPE_MESH_POINT:
3831                 return "MESH_POINT";
3832         case NL80211_IFTYPE_P2P_CLIENT:
3833                 return "P2P_CLIENT";
3834         case NL80211_IFTYPE_P2P_GO:
3835                 return "P2P_GO";
3836         case NL80211_IFTYPE_P2P_DEVICE:
3837                 return "P2P_DEVICE";
3838         default:
3839                 return "unknown";
3840         }
3841 }
3842
3843
3844 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3845                                      const char *ifname,
3846                                      enum nl80211_iftype iftype,
3847                                      const u8 *addr, int wds,
3848                                      int (*handler)(struct nl_msg *, void *),
3849                                      void *arg)
3850 {
3851         struct nl_msg *msg;
3852         int ifidx;
3853         int ret = -ENOBUFS;
3854
3855         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3856                    iftype, nl80211_iftype_str(iftype));
3857
3858         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3859         if (!msg ||
3860             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3861             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3862                 goto fail;
3863
3864         if (iftype == NL80211_IFTYPE_MONITOR) {
3865                 struct nlattr *flags;
3866
3867                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3868                 if (!flags ||
3869                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3870                         goto fail;
3871
3872                 nla_nest_end(msg, flags);
3873         } else if (wds) {
3874                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
3875                         goto fail;
3876         }
3877
3878         /*
3879          * Tell cfg80211 that the interface belongs to the socket that created
3880          * it, and the interface should be deleted when the socket is closed.
3881          */
3882         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
3883                 goto fail;
3884
3885         ret = send_and_recv_msgs(drv, msg, handler, arg);
3886         msg = NULL;
3887         if (ret) {
3888         fail:
3889                 nlmsg_free(msg);
3890                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3891                            ifname, ret, strerror(-ret));
3892                 return ret;
3893         }
3894
3895         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
3896                 return 0;
3897
3898         ifidx = if_nametoindex(ifname);
3899         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3900                    ifname, ifidx);
3901
3902         if (ifidx <= 0)
3903                 return -1;
3904
3905         /*
3906          * Some virtual interfaces need to process EAPOL packets and events on
3907          * the parent interface. This is used mainly with hostapd.
3908          */
3909         if (drv->hostapd ||
3910             iftype == NL80211_IFTYPE_AP_VLAN ||
3911             iftype == NL80211_IFTYPE_WDS ||
3912             iftype == NL80211_IFTYPE_MONITOR) {
3913                 /* start listening for EAPOL on this interface */
3914                 add_ifidx(drv, ifidx);
3915         }
3916
3917         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3918             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
3919                 nl80211_remove_iface(drv, ifidx);
3920                 return -1;
3921         }
3922
3923         return ifidx;
3924 }
3925
3926
3927 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3928                          const char *ifname, enum nl80211_iftype iftype,
3929                          const u8 *addr, int wds,
3930                          int (*handler)(struct nl_msg *, void *),
3931                          void *arg, int use_existing)
3932 {
3933         int ret;
3934
3935         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
3936                                         arg);
3937
3938         /* if error occurred and interface exists already */
3939         if (ret == -ENFILE && if_nametoindex(ifname)) {
3940                 if (use_existing) {
3941                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
3942                                    ifname);
3943                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3944                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
3945                                                addr) < 0 &&
3946                             (linux_set_iface_flags(drv->global->ioctl_sock,
3947                                                    ifname, 0) < 0 ||
3948                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
3949                                                 addr) < 0 ||
3950                              linux_set_iface_flags(drv->global->ioctl_sock,
3951                                                    ifname, 1) < 0))
3952                                         return -1;
3953                         return -ENFILE;
3954                 }
3955                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3956
3957                 /* Try to remove the interface that was already there. */
3958                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3959
3960                 /* Try to create the interface again */
3961                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3962                                                 wds, handler, arg);
3963         }
3964
3965         if (ret >= 0 && is_p2p_net_interface(iftype)) {
3966                 wpa_printf(MSG_DEBUG,
3967                            "nl80211: Interface %s created for P2P - disable 11b rates",
3968                            ifname);
3969                 nl80211_disable_11b_rates(drv, ret, 1);
3970         }
3971
3972         return ret;
3973 }
3974
3975
3976 static int nl80211_setup_ap(struct i802_bss *bss)
3977 {
3978         struct wpa_driver_nl80211_data *drv = bss->drv;
3979
3980         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
3981                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
3982
3983         /*
3984          * Disable Probe Request reporting unless we need it in this way for
3985          * devices that include the AP SME, in the other case (unless using
3986          * monitor iface) we'll get it through the nl_mgmt socket instead.
3987          */
3988         if (!drv->device_ap_sme)
3989                 wpa_driver_nl80211_probe_req_report(bss, 0);
3990
3991         if (!drv->device_ap_sme && !drv->use_monitor)
3992                 if (nl80211_mgmt_subscribe_ap(bss))
3993                         return -1;
3994
3995         if (drv->device_ap_sme && !drv->use_monitor)
3996                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
3997                         return -1;
3998
3999         if (!drv->device_ap_sme && drv->use_monitor &&
4000             nl80211_create_monitor_interface(drv) &&
4001             !drv->device_ap_sme)
4002                 return -1;
4003
4004         if (drv->device_ap_sme &&
4005             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4006                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4007                            "Probe Request frame reporting in AP mode");
4008                 /* Try to survive without this */
4009         }
4010
4011         return 0;
4012 }
4013
4014
4015 static void nl80211_teardown_ap(struct i802_bss *bss)
4016 {
4017         struct wpa_driver_nl80211_data *drv = bss->drv;
4018
4019         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4020                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4021         if (drv->device_ap_sme) {
4022                 wpa_driver_nl80211_probe_req_report(bss, 0);
4023                 if (!drv->use_monitor)
4024                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4025         } else if (drv->use_monitor)
4026                 nl80211_remove_monitor_interface(drv);
4027         else
4028                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4029
4030         bss->beacon_set = 0;
4031 }
4032
4033
4034 static int nl80211_send_eapol_data(struct i802_bss *bss,
4035                                    const u8 *addr, const u8 *data,
4036                                    size_t data_len)
4037 {
4038         struct sockaddr_ll ll;
4039         int ret;
4040
4041         if (bss->drv->eapol_tx_sock < 0) {
4042                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4043                 return -1;
4044         }
4045
4046         os_memset(&ll, 0, sizeof(ll));
4047         ll.sll_family = AF_PACKET;
4048         ll.sll_ifindex = bss->ifindex;
4049         ll.sll_protocol = htons(ETH_P_PAE);
4050         ll.sll_halen = ETH_ALEN;
4051         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4052         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4053                      (struct sockaddr *) &ll, sizeof(ll));
4054         if (ret < 0)
4055                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4056                            strerror(errno));
4057
4058         return ret;
4059 }
4060
4061
4062 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4063
4064 static int wpa_driver_nl80211_hapd_send_eapol(
4065         void *priv, const u8 *addr, const u8 *data,
4066         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4067 {
4068         struct i802_bss *bss = priv;
4069         struct wpa_driver_nl80211_data *drv = bss->drv;
4070         struct ieee80211_hdr *hdr;
4071         size_t len;
4072         u8 *pos;
4073         int res;
4074         int qos = flags & WPA_STA_WMM;
4075
4076         if (drv->device_ap_sme || !drv->use_monitor)
4077                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4078
4079         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4080                 data_len;
4081         hdr = os_zalloc(len);
4082         if (hdr == NULL) {
4083                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4084                            (unsigned long) len);
4085                 return -1;
4086         }
4087
4088         hdr->frame_control =
4089                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4090         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4091         if (encrypt)
4092                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4093         if (qos) {
4094                 hdr->frame_control |=
4095                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4096         }
4097
4098         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4099         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4100         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4101         pos = (u8 *) (hdr + 1);
4102
4103         if (qos) {
4104                 /* Set highest priority in QoS header */
4105                 pos[0] = 7;
4106                 pos[1] = 0;
4107                 pos += 2;
4108         }
4109
4110         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4111         pos += sizeof(rfc1042_header);
4112         WPA_PUT_BE16(pos, ETH_P_PAE);
4113         pos += 2;
4114         memcpy(pos, data, data_len);
4115
4116         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4117                                             0, 0, 0, 0);
4118         if (res < 0) {
4119                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4120                            "failed: %d (%s)",
4121                            (unsigned long) len, errno, strerror(errno));
4122         }
4123         os_free(hdr);
4124
4125         return res;
4126 }
4127
4128
4129 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4130                                             int total_flags,
4131                                             int flags_or, int flags_and)
4132 {
4133         struct i802_bss *bss = priv;
4134         struct nl_msg *msg;
4135         struct nlattr *flags;
4136         struct nl80211_sta_flag_update upd;
4137
4138         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4139                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4140                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4141                    !!(total_flags & WPA_STA_AUTHORIZED));
4142
4143         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4144             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4145                 goto fail;
4146
4147         /*
4148          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4149          * can be removed eventually.
4150          */
4151         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4152         if (!flags ||
4153             ((total_flags & WPA_STA_AUTHORIZED) &&
4154              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4155             ((total_flags & WPA_STA_WMM) &&
4156              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4157             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4158              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4159             ((total_flags & WPA_STA_MFP) &&
4160              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4161             ((total_flags & WPA_STA_TDLS_PEER) &&
4162              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4163                 goto fail;
4164
4165         nla_nest_end(msg, flags);
4166
4167         os_memset(&upd, 0, sizeof(upd));
4168         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4169         upd.set = sta_flags_nl80211(flags_or);
4170         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4171                 goto fail;
4172
4173         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4174 fail:
4175         nlmsg_free(msg);
4176         return -ENOBUFS;
4177 }
4178
4179
4180 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4181                                  struct wpa_driver_associate_params *params)
4182 {
4183         enum nl80211_iftype nlmode, old_mode;
4184
4185         if (params->p2p) {
4186                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4187                            "group (GO)");
4188                 nlmode = NL80211_IFTYPE_P2P_GO;
4189         } else
4190                 nlmode = NL80211_IFTYPE_AP;
4191
4192         old_mode = drv->nlmode;
4193         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4194                 nl80211_remove_monitor_interface(drv);
4195                 return -1;
4196         }
4197
4198         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4199                 if (old_mode != nlmode)
4200                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4201                 nl80211_remove_monitor_interface(drv);
4202                 return -1;
4203         }
4204
4205         return 0;
4206 }
4207
4208
4209 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4210                               int reset_mode)
4211 {
4212         struct nl_msg *msg;
4213         int ret;
4214
4215         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4216         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4217         if (ret) {
4218                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4219                            "(%s)", ret, strerror(-ret));
4220         } else {
4221                 wpa_printf(MSG_DEBUG,
4222                            "nl80211: Leave IBSS request sent successfully");
4223         }
4224
4225         if (reset_mode &&
4226             wpa_driver_nl80211_set_mode(drv->first_bss,
4227                                         NL80211_IFTYPE_STATION)) {
4228                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4229                            "station mode");
4230         }
4231
4232         return ret;
4233 }
4234
4235
4236 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4237                                     struct wpa_driver_associate_params *params)
4238 {
4239         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4240                 return -1;
4241
4242         if (params->htcaps && params->htcaps_mask) {
4243                 int sz = sizeof(struct ieee80211_ht_capabilities);
4244                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4245                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4246                             params->htcaps_mask, sz);
4247                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4248                             params->htcaps) ||
4249                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4250                             params->htcaps_mask))
4251                         return -1;
4252         }
4253
4254 #ifdef CONFIG_VHT_OVERRIDES
4255         if (params->disable_vht) {
4256                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4257                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4258                         return -1;
4259         }
4260
4261         if (params->vhtcaps && params->vhtcaps_mask) {
4262                 int sz = sizeof(struct ieee80211_vht_capabilities);
4263                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4264                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4265                             params->vhtcaps_mask, sz);
4266                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4267                             params->vhtcaps) ||
4268                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4269                             params->vhtcaps_mask))
4270                         return -1;
4271         }
4272 #endif /* CONFIG_VHT_OVERRIDES */
4273
4274         return 0;
4275 }
4276
4277
4278 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4279                                    struct wpa_driver_associate_params *params)
4280 {
4281         struct nl_msg *msg;
4282         int ret = -1;
4283         int count = 0;
4284
4285         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4286
4287         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4288                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4289                            "IBSS mode");
4290                 return -1;
4291         }
4292
4293 retry:
4294         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4295             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4296                 goto fail;
4297
4298         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4299                           params->ssid, params->ssid_len);
4300         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4301                 goto fail;
4302         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4303         drv->ssid_len = params->ssid_len;
4304
4305         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4306             nl80211_put_beacon_int(msg, params->beacon_int))
4307                 goto fail;
4308
4309         ret = nl80211_set_conn_keys(params, msg);
4310         if (ret)
4311                 goto fail;
4312
4313         if (params->bssid && params->fixed_bssid) {
4314                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4315                            MAC2STR(params->bssid));
4316                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4317                         goto fail;
4318         }
4319
4320         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4321             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4322             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4323             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4324                 wpa_printf(MSG_DEBUG, "  * control port");
4325                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4326                         goto fail;
4327         }
4328
4329         if (params->wpa_ie) {
4330                 wpa_hexdump(MSG_DEBUG,
4331                             "  * Extra IEs for Beacon/Probe Response frames",
4332                             params->wpa_ie, params->wpa_ie_len);
4333                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4334                             params->wpa_ie))
4335                         goto fail;
4336         }
4337
4338         if (nl80211_ht_vht_overrides(msg, params) < 0)
4339                 return -1;
4340
4341         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4342         msg = NULL;
4343         if (ret) {
4344                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4345                            ret, strerror(-ret));
4346                 count++;
4347                 if (ret == -EALREADY && count == 1) {
4348                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4349                                    "forced leave");
4350                         nl80211_leave_ibss(drv, 0);
4351                         nlmsg_free(msg);
4352                         goto retry;
4353                 }
4354         } else {
4355                 wpa_printf(MSG_DEBUG,
4356                            "nl80211: Join IBSS request sent successfully");
4357         }
4358
4359 fail:
4360         nlmsg_free(msg);
4361         return ret;
4362 }
4363
4364
4365 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4366                                   struct wpa_driver_associate_params *params,
4367                                   struct nl_msg *msg)
4368 {
4369         if (params->bssid) {
4370                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4371                            MAC2STR(params->bssid));
4372                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4373                         return -1;
4374         }
4375
4376         if (params->bssid_hint) {
4377                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4378                            MAC2STR(params->bssid_hint));
4379                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4380                             params->bssid_hint))
4381                         return -1;
4382         }
4383
4384         if (params->freq.freq) {
4385                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4386                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4387                                 params->freq.freq))
4388                         return -1;
4389                 drv->assoc_freq = params->freq.freq;
4390         } else
4391                 drv->assoc_freq = 0;
4392
4393         if (params->freq_hint) {
4394                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4395                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4396                                 params->freq_hint))
4397                         return -1;
4398         }
4399
4400         if (params->bg_scan_period >= 0) {
4401                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4402                            params->bg_scan_period);
4403                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4404                                 params->bg_scan_period))
4405                         return -1;
4406         }
4407
4408         if (params->ssid) {
4409                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4410                                   params->ssid, params->ssid_len);
4411                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4412                             params->ssid))
4413                         return -1;
4414                 if (params->ssid_len > sizeof(drv->ssid))
4415                         return -1;
4416                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4417                 drv->ssid_len = params->ssid_len;
4418         }
4419
4420         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4421         if (params->wpa_ie &&
4422             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4423                 return -1;
4424
4425         if (params->wpa_proto) {
4426                 enum nl80211_wpa_versions ver = 0;
4427
4428                 if (params->wpa_proto & WPA_PROTO_WPA)
4429                         ver |= NL80211_WPA_VERSION_1;
4430                 if (params->wpa_proto & WPA_PROTO_RSN)
4431                         ver |= NL80211_WPA_VERSION_2;
4432
4433                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4434                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4435                         return -1;
4436         }
4437
4438         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4439                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4440                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4441                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4442                                 cipher))
4443                         return -1;
4444         }
4445
4446         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4447             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4448                 /*
4449                  * This is likely to work even though many drivers do not
4450                  * advertise support for operations without GTK.
4451                  */
4452                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4453         } else if (params->group_suite != WPA_CIPHER_NONE) {
4454                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4455                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4456                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4457                         return -1;
4458         }
4459
4460         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4461             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4462             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4463             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4464             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4465             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4466             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4467             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4468             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4469             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4470                 int mgmt = WLAN_AKM_SUITE_PSK;
4471
4472                 switch (params->key_mgmt_suite) {
4473                 case WPA_KEY_MGMT_CCKM:
4474                         mgmt = WLAN_AKM_SUITE_CCKM;
4475                         break;
4476                 case WPA_KEY_MGMT_IEEE8021X:
4477                         mgmt = WLAN_AKM_SUITE_8021X;
4478                         break;
4479                 case WPA_KEY_MGMT_FT_IEEE8021X:
4480                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4481                         break;
4482                 case WPA_KEY_MGMT_FT_PSK:
4483                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4484                         break;
4485                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4486                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4487                         break;
4488                 case WPA_KEY_MGMT_PSK_SHA256:
4489                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4490                         break;
4491                 case WPA_KEY_MGMT_OSEN:
4492                         mgmt = WLAN_AKM_SUITE_OSEN;
4493                         break;
4494                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4495                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4496                         break;
4497                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4498                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4499                         break;
4500                 case WPA_KEY_MGMT_PSK:
4501                 default:
4502                         mgmt = WLAN_AKM_SUITE_PSK;
4503                         break;
4504                 }
4505                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4506                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4507                         return -1;
4508         }
4509
4510         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4511                 return -1;
4512
4513         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4514             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4515                 return -1;
4516
4517         if (params->rrm_used) {
4518                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4519                 if (!(drv_rrm_flags &
4520                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4521                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4522                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4523                         return -1;
4524         }
4525
4526         if (nl80211_ht_vht_overrides(msg, params) < 0)
4527                 return -1;
4528
4529         if (params->p2p)
4530                 wpa_printf(MSG_DEBUG, "  * P2P group");
4531
4532         return 0;
4533 }
4534
4535
4536 static int wpa_driver_nl80211_try_connect(
4537         struct wpa_driver_nl80211_data *drv,
4538         struct wpa_driver_associate_params *params)
4539 {
4540         struct nl_msg *msg;
4541         enum nl80211_auth_type type;
4542         int ret;
4543         int algs;
4544
4545         if (params->req_key_mgmt_offload && params->psk &&
4546             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4547              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4548              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4549                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4550                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4551                 if (ret)
4552                         return ret;
4553         }
4554
4555         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4556         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4557         if (!msg)
4558                 return -1;
4559
4560         ret = nl80211_connect_common(drv, params, msg);
4561         if (ret)
4562                 goto fail;
4563
4564         algs = 0;
4565         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4566                 algs++;
4567         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4568                 algs++;
4569         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4570                 algs++;
4571         if (algs > 1) {
4572                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4573                            "selection");
4574                 goto skip_auth_type;
4575         }
4576
4577         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4578                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4579         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4580                 type = NL80211_AUTHTYPE_SHARED_KEY;
4581         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4582                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4583         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4584                 type = NL80211_AUTHTYPE_FT;
4585         else
4586                 goto fail;
4587
4588         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4589         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4590                 goto fail;
4591
4592 skip_auth_type:
4593         ret = nl80211_set_conn_keys(params, msg);
4594         if (ret)
4595                 goto fail;
4596
4597         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4598         msg = NULL;
4599         if (ret) {
4600                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4601                            "(%s)", ret, strerror(-ret));
4602         } else {
4603                 wpa_printf(MSG_DEBUG,
4604                            "nl80211: Connect request send successfully");
4605         }
4606
4607 fail:
4608         nlmsg_free(msg);
4609         return ret;
4610
4611 }
4612
4613
4614 static int wpa_driver_nl80211_connect(
4615         struct wpa_driver_nl80211_data *drv,
4616         struct wpa_driver_associate_params *params)
4617 {
4618         int ret;
4619
4620         /* Store the connection attempted bssid for future use */
4621         if (params->bssid)
4622                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4623         else
4624                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4625
4626         ret = wpa_driver_nl80211_try_connect(drv, params);
4627         if (ret == -EALREADY) {
4628                 /*
4629                  * cfg80211 does not currently accept new connections if
4630                  * we are already connected. As a workaround, force
4631                  * disconnection and try again.
4632                  */
4633                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4634                            "disconnecting before reassociation "
4635                            "attempt");
4636                 if (wpa_driver_nl80211_disconnect(
4637                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4638                         return -1;
4639                 ret = wpa_driver_nl80211_try_connect(drv, params);
4640         }
4641         return ret;
4642 }
4643
4644
4645 static int wpa_driver_nl80211_associate(
4646         void *priv, struct wpa_driver_associate_params *params)
4647 {
4648         struct i802_bss *bss = priv;
4649         struct wpa_driver_nl80211_data *drv = bss->drv;
4650         int ret = -1;
4651         struct nl_msg *msg;
4652
4653         nl80211_unmask_11b_rates(bss);
4654
4655         if (params->mode == IEEE80211_MODE_AP)
4656                 return wpa_driver_nl80211_ap(drv, params);
4657
4658         if (params->mode == IEEE80211_MODE_IBSS)
4659                 return wpa_driver_nl80211_ibss(drv, params);
4660
4661         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4662                 enum nl80211_iftype nlmode = params->p2p ?
4663                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4664
4665                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4666                         return -1;
4667                 return wpa_driver_nl80211_connect(drv, params);
4668         }
4669
4670         nl80211_mark_disconnected(drv);
4671
4672         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4673                    drv->ifindex);
4674         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4675         if (!msg)
4676                 return -1;
4677
4678         ret = nl80211_connect_common(drv, params, msg);
4679         if (ret)
4680                 goto fail;
4681
4682         if (params->prev_bssid) {
4683                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4684                            MAC2STR(params->prev_bssid));
4685                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4686                             params->prev_bssid))
4687                         goto fail;
4688         }
4689
4690         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4691         msg = NULL;
4692         if (ret) {
4693                 wpa_dbg(drv->ctx, MSG_DEBUG,
4694                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4695                         ret, strerror(-ret));
4696                 nl80211_dump_scan(drv);
4697         } else {
4698                 wpa_printf(MSG_DEBUG,
4699                            "nl80211: Association request send successfully");
4700         }
4701
4702 fail:
4703         nlmsg_free(msg);
4704         return ret;
4705 }
4706
4707
4708 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4709                             int ifindex, enum nl80211_iftype mode)
4710 {
4711         struct nl_msg *msg;
4712         int ret = -ENOBUFS;
4713
4714         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4715                    ifindex, mode, nl80211_iftype_str(mode));
4716
4717         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4718         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4719                 goto fail;
4720
4721         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4722         msg = NULL;
4723         if (!ret)
4724                 return 0;
4725 fail:
4726         nlmsg_free(msg);
4727         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4728                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4729         return ret;
4730 }
4731
4732
4733 static int wpa_driver_nl80211_set_mode_impl(
4734                 struct i802_bss *bss,
4735                 enum nl80211_iftype nlmode,
4736                 struct hostapd_freq_params *desired_freq_params)
4737 {
4738         struct wpa_driver_nl80211_data *drv = bss->drv;
4739         int ret = -1;
4740         int i;
4741         int was_ap = is_ap_interface(drv->nlmode);
4742         int res;
4743         int mode_switch_res;
4744
4745         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4746         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4747                 mode_switch_res = 0;
4748
4749         if (mode_switch_res == 0) {
4750                 drv->nlmode = nlmode;
4751                 ret = 0;
4752                 goto done;
4753         }
4754
4755         if (mode_switch_res == -ENODEV)
4756                 return -1;
4757
4758         if (nlmode == drv->nlmode) {
4759                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4760                            "requested mode - ignore error");
4761                 ret = 0;
4762                 goto done; /* Already in the requested mode */
4763         }
4764
4765         /* mac80211 doesn't allow mode changes while the device is up, so
4766          * take the device down, try to set the mode again, and bring the
4767          * device back up.
4768          */
4769         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4770                    "interface down");
4771         for (i = 0; i < 10; i++) {
4772                 res = i802_set_iface_flags(bss, 0);
4773                 if (res == -EACCES || res == -ENODEV)
4774                         break;
4775                 if (res != 0) {
4776                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4777                                    "interface down");
4778                         os_sleep(0, 100000);
4779                         continue;
4780                 }
4781
4782                 /*
4783                  * Setting the mode will fail for some drivers if the phy is
4784                  * on a frequency that the mode is disallowed in.
4785                  */
4786                 if (desired_freq_params) {
4787                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4788                         if (res) {
4789                                 wpa_printf(MSG_DEBUG,
4790                                            "nl80211: Failed to set frequency on interface");
4791                         }
4792                 }
4793
4794                 /* Try to set the mode again while the interface is down */
4795                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4796                 if (mode_switch_res == -EBUSY) {
4797                         wpa_printf(MSG_DEBUG,
4798                                    "nl80211: Delaying mode set while interface going down");
4799                         os_sleep(0, 100000);
4800                         continue;
4801                 }
4802                 ret = mode_switch_res;
4803                 break;
4804         }
4805
4806         if (!ret) {
4807                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4808                            "interface is down");
4809                 drv->nlmode = nlmode;
4810                 drv->ignore_if_down_event = 1;
4811         }
4812
4813         /* Bring the interface back up */
4814         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4815         if (res != 0) {
4816                 wpa_printf(MSG_DEBUG,
4817                            "nl80211: Failed to set interface up after switching mode");
4818                 ret = -1;
4819         }
4820
4821 done:
4822         if (ret) {
4823                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4824                            "from %d failed", nlmode, drv->nlmode);
4825                 return ret;
4826         }
4827
4828         if (is_p2p_net_interface(nlmode)) {
4829                 wpa_printf(MSG_DEBUG,
4830                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4831                            bss->ifname);
4832                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4833         } else if (drv->disabled_11b_rates) {
4834                 wpa_printf(MSG_DEBUG,
4835                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4836                            bss->ifname);
4837                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4838         }
4839
4840         if (is_ap_interface(nlmode)) {
4841                 nl80211_mgmt_unsubscribe(bss, "start AP");
4842                 /* Setup additional AP mode functionality if needed */
4843                 if (nl80211_setup_ap(bss))
4844                         return -1;
4845         } else if (was_ap) {
4846                 /* Remove additional AP mode functionality */
4847                 nl80211_teardown_ap(bss);
4848         } else {
4849                 nl80211_mgmt_unsubscribe(bss, "mode change");
4850         }
4851
4852         if (is_mesh_interface(nlmode) &&
4853             nl80211_mgmt_subscribe_mesh(bss))
4854                 return -1;
4855
4856         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4857             !is_mesh_interface(nlmode) &&
4858             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4859                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4860                            "frame processing - ignore for now");
4861
4862         return 0;
4863 }
4864
4865
4866 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
4867                                 enum nl80211_iftype nlmode)
4868 {
4869         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
4870 }
4871
4872
4873 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
4874                                             struct hostapd_freq_params *freq)
4875 {
4876         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
4877                                                 freq);
4878 }
4879
4880
4881 static int wpa_driver_nl80211_get_capa(void *priv,
4882                                        struct wpa_driver_capa *capa)
4883 {
4884         struct i802_bss *bss = priv;
4885         struct wpa_driver_nl80211_data *drv = bss->drv;
4886
4887         if (!drv->has_capability)
4888                 return -1;
4889         os_memcpy(capa, &drv->capa, sizeof(*capa));
4890         if (drv->extended_capa && drv->extended_capa_mask) {
4891                 capa->extended_capa = drv->extended_capa;
4892                 capa->extended_capa_mask = drv->extended_capa_mask;
4893                 capa->extended_capa_len = drv->extended_capa_len;
4894         }
4895
4896         return 0;
4897 }
4898
4899
4900 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4901 {
4902         struct i802_bss *bss = priv;
4903         struct wpa_driver_nl80211_data *drv = bss->drv;
4904
4905         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
4906                    bss->ifname, drv->operstate, state,
4907                    state ? "UP" : "DORMANT");
4908         drv->operstate = state;
4909         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
4910                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4911 }
4912
4913
4914 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4915 {
4916         struct i802_bss *bss = priv;
4917         struct wpa_driver_nl80211_data *drv = bss->drv;
4918         struct nl_msg *msg;
4919         struct nl80211_sta_flag_update upd;
4920         int ret;
4921
4922         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
4923                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
4924                 return 0;
4925         }
4926
4927         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
4928                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
4929
4930         os_memset(&upd, 0, sizeof(upd));
4931         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4932         if (authorized)
4933                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4934
4935         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4936             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
4937             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
4938                 nlmsg_free(msg);
4939                 return -ENOBUFS;
4940         }
4941
4942         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4943         if (!ret)
4944                 return 0;
4945         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
4946                    ret, strerror(-ret));
4947         return ret;
4948 }
4949
4950
4951 /* Set kernel driver on given frequency (MHz) */
4952 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4953 {
4954         struct i802_bss *bss = priv;
4955         return nl80211_set_channel(bss, freq, 0);
4956 }
4957
4958
4959 static inline int min_int(int a, int b)
4960 {
4961         if (a < b)
4962                 return a;
4963         return b;
4964 }
4965
4966
4967 static int get_key_handler(struct nl_msg *msg, void *arg)
4968 {
4969         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4970         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4971
4972         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4973                   genlmsg_attrlen(gnlh, 0), NULL);
4974
4975         /*
4976          * TODO: validate the key index and mac address!
4977          * Otherwise, there's a race condition as soon as
4978          * the kernel starts sending key notifications.
4979          */
4980
4981         if (tb[NL80211_ATTR_KEY_SEQ])
4982                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4983                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4984         return NL_SKIP;
4985 }
4986
4987
4988 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4989                            int idx, u8 *seq)
4990 {
4991         struct i802_bss *bss = priv;
4992         struct wpa_driver_nl80211_data *drv = bss->drv;
4993         struct nl_msg *msg;
4994
4995         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
4996                                   NL80211_CMD_GET_KEY);
4997         if (!msg ||
4998             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
4999             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5000                 nlmsg_free(msg);
5001                 return -ENOBUFS;
5002         }
5003
5004         memset(seq, 0, 6);
5005
5006         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5007 }
5008
5009
5010 static int i802_set_rts(void *priv, int rts)
5011 {
5012         struct i802_bss *bss = priv;
5013         struct wpa_driver_nl80211_data *drv = bss->drv;
5014         struct nl_msg *msg;
5015         int ret;
5016         u32 val;
5017
5018         if (rts >= 2347)
5019                 val = (u32) -1;
5020         else
5021                 val = rts;
5022
5023         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5024             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5025                 nlmsg_free(msg);
5026                 return -ENOBUFS;
5027         }
5028
5029         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5030         if (!ret)
5031                 return 0;
5032         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5033                    "%d (%s)", rts, ret, strerror(-ret));
5034         return ret;
5035 }
5036
5037
5038 static int i802_set_frag(void *priv, int frag)
5039 {
5040         struct i802_bss *bss = priv;
5041         struct wpa_driver_nl80211_data *drv = bss->drv;
5042         struct nl_msg *msg;
5043         int ret;
5044         u32 val;
5045
5046         if (frag >= 2346)
5047                 val = (u32) -1;
5048         else
5049                 val = frag;
5050
5051         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5052             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5053                 nlmsg_free(msg);
5054                 return -ENOBUFS;
5055         }
5056
5057         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5058         if (!ret)
5059                 return 0;
5060         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5061                    "%d: %d (%s)", frag, ret, strerror(-ret));
5062         return ret;
5063 }
5064
5065
5066 static int i802_flush(void *priv)
5067 {
5068         struct i802_bss *bss = priv;
5069         struct nl_msg *msg;
5070         int res;
5071
5072         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5073                    bss->ifname);
5074
5075         /*
5076          * XXX: FIX! this needs to flush all VLANs too
5077          */
5078         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5079         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5080         if (res) {
5081                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5082                            "(%s)", res, strerror(-res));
5083         }
5084         return res;
5085 }
5086
5087
5088 static int get_sta_handler(struct nl_msg *msg, void *arg)
5089 {
5090         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5091         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5092         struct hostap_sta_driver_data *data = arg;
5093         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5094         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5095                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5096                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5097                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5098                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5099                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5100                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5101         };
5102
5103         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5104                   genlmsg_attrlen(gnlh, 0), NULL);
5105
5106         /*
5107          * TODO: validate the interface and mac address!
5108          * Otherwise, there's a race condition as soon as
5109          * the kernel starts sending station notifications.
5110          */
5111
5112         if (!tb[NL80211_ATTR_STA_INFO]) {
5113                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5114                 return NL_SKIP;
5115         }
5116         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5117                              tb[NL80211_ATTR_STA_INFO],
5118                              stats_policy)) {
5119                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5120                 return NL_SKIP;
5121         }
5122
5123         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5124                 data->inactive_msec =
5125                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5126         if (stats[NL80211_STA_INFO_RX_BYTES])
5127                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5128         if (stats[NL80211_STA_INFO_TX_BYTES])
5129                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5130         if (stats[NL80211_STA_INFO_RX_PACKETS])
5131                 data->rx_packets =
5132                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5133         if (stats[NL80211_STA_INFO_TX_PACKETS])
5134                 data->tx_packets =
5135                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5136         if (stats[NL80211_STA_INFO_TX_FAILED])
5137                 data->tx_retry_failed =
5138                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5139
5140         return NL_SKIP;
5141 }
5142
5143 static int i802_read_sta_data(struct i802_bss *bss,
5144                               struct hostap_sta_driver_data *data,
5145                               const u8 *addr)
5146 {
5147         struct nl_msg *msg;
5148
5149         os_memset(data, 0, sizeof(*data));
5150
5151         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5152             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5153                 nlmsg_free(msg);
5154                 return -ENOBUFS;
5155         }
5156
5157         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5158 }
5159
5160
5161 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5162                                     int cw_min, int cw_max, int burst_time)
5163 {
5164         struct i802_bss *bss = priv;
5165         struct wpa_driver_nl80211_data *drv = bss->drv;
5166         struct nl_msg *msg;
5167         struct nlattr *txq, *params;
5168
5169         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5170         if (!msg)
5171                 return -1;
5172
5173         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5174         if (!txq)
5175                 goto fail;
5176
5177         /* We are only sending parameters for a single TXQ at a time */
5178         params = nla_nest_start(msg, 1);
5179         if (!params)
5180                 goto fail;
5181
5182         switch (queue) {
5183         case 0:
5184                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5185                         goto fail;
5186                 break;
5187         case 1:
5188                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5189                         goto fail;
5190                 break;
5191         case 2:
5192                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5193                         goto fail;
5194                 break;
5195         case 3:
5196                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5197                         goto fail;
5198                 break;
5199         }
5200         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5201          * 32 usec, so need to convert the value here. */
5202         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5203                         (burst_time * 100 + 16) / 32) ||
5204             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5205             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5206             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5207                 goto fail;
5208
5209         nla_nest_end(msg, params);
5210
5211         nla_nest_end(msg, txq);
5212
5213         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5214                 return 0;
5215         msg = NULL;
5216 fail:
5217         nlmsg_free(msg);
5218         return -1;
5219 }
5220
5221
5222 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5223                              const char *ifname, int vlan_id)
5224 {
5225         struct wpa_driver_nl80211_data *drv = bss->drv;
5226         struct nl_msg *msg;
5227         int ret;
5228
5229         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5230                    ", ifname=%s[%d], vlan_id=%d)",
5231                    bss->ifname, if_nametoindex(bss->ifname),
5232                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5233         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5234             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5235             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5236                 nlmsg_free(msg);
5237                 return -ENOBUFS;
5238         }
5239
5240         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5241         if (ret < 0) {
5242                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5243                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5244                            MAC2STR(addr), ifname, vlan_id, ret,
5245                            strerror(-ret));
5246         }
5247         return ret;
5248 }
5249
5250
5251 static int i802_get_inact_sec(void *priv, const u8 *addr)
5252 {
5253         struct hostap_sta_driver_data data;
5254         int ret;
5255
5256         data.inactive_msec = (unsigned long) -1;
5257         ret = i802_read_sta_data(priv, &data, addr);
5258         if (ret == -ENOENT)
5259                 return -ENOENT;
5260         if (ret || data.inactive_msec == (unsigned long) -1)
5261                 return -1;
5262         return data.inactive_msec / 1000;
5263 }
5264
5265
5266 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5267 {
5268 #if 0
5269         /* TODO */
5270 #endif
5271         return 0;
5272 }
5273
5274
5275 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5276                            int reason)
5277 {
5278         struct i802_bss *bss = priv;
5279         struct wpa_driver_nl80211_data *drv = bss->drv;
5280         struct ieee80211_mgmt mgmt;
5281
5282         if (is_mesh_interface(drv->nlmode))
5283                 return -1;
5284
5285         if (drv->device_ap_sme)
5286                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5287
5288         memset(&mgmt, 0, sizeof(mgmt));
5289         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5290                                           WLAN_FC_STYPE_DEAUTH);
5291         memcpy(mgmt.da, addr, ETH_ALEN);
5292         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5293         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5294         mgmt.u.deauth.reason_code = host_to_le16(reason);
5295         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5296                                             IEEE80211_HDRLEN +
5297                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5298                                             0);
5299 }
5300
5301
5302 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5303                              int reason)
5304 {
5305         struct i802_bss *bss = priv;
5306         struct wpa_driver_nl80211_data *drv = bss->drv;
5307         struct ieee80211_mgmt mgmt;
5308
5309         if (is_mesh_interface(drv->nlmode))
5310                 return -1;
5311
5312         if (drv->device_ap_sme)
5313                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5314
5315         memset(&mgmt, 0, sizeof(mgmt));
5316         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5317                                           WLAN_FC_STYPE_DISASSOC);
5318         memcpy(mgmt.da, addr, ETH_ALEN);
5319         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5320         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5321         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5322         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5323                                             IEEE80211_HDRLEN +
5324                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5325                                             0);
5326 }
5327
5328
5329 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5330 {
5331         char buf[200], *pos, *end;
5332         int i, res;
5333
5334         pos = buf;
5335         end = pos + sizeof(buf);
5336
5337         for (i = 0; i < drv->num_if_indices; i++) {
5338                 if (!drv->if_indices[i])
5339                         continue;
5340                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5341                 if (os_snprintf_error(end - pos, res))
5342                         break;
5343                 pos += res;
5344         }
5345         *pos = '\0';
5346
5347         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5348                    drv->num_if_indices, buf);
5349 }
5350
5351
5352 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5353 {
5354         int i;
5355         int *old;
5356
5357         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5358                    ifidx);
5359         if (have_ifidx(drv, ifidx)) {
5360                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5361                            ifidx);
5362                 return;
5363         }
5364         for (i = 0; i < drv->num_if_indices; i++) {
5365                 if (drv->if_indices[i] == 0) {
5366                         drv->if_indices[i] = ifidx;
5367                         dump_ifidx(drv);
5368                         return;
5369                 }
5370         }
5371
5372         if (drv->if_indices != drv->default_if_indices)
5373                 old = drv->if_indices;
5374         else
5375                 old = NULL;
5376
5377         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5378                                            sizeof(int));
5379         if (!drv->if_indices) {
5380                 if (!old)
5381                         drv->if_indices = drv->default_if_indices;
5382                 else
5383                         drv->if_indices = old;
5384                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5385                            "interfaces");
5386                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5387                 return;
5388         } else if (!old)
5389                 os_memcpy(drv->if_indices, drv->default_if_indices,
5390                           sizeof(drv->default_if_indices));
5391         drv->if_indices[drv->num_if_indices] = ifidx;
5392         drv->num_if_indices++;
5393         dump_ifidx(drv);
5394 }
5395
5396
5397 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5398 {
5399         int i;
5400
5401         for (i = 0; i < drv->num_if_indices; i++) {
5402                 if (drv->if_indices[i] == ifidx) {
5403                         drv->if_indices[i] = 0;
5404                         break;
5405                 }
5406         }
5407         dump_ifidx(drv);
5408 }
5409
5410
5411 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5412 {
5413         int i;
5414
5415         for (i = 0; i < drv->num_if_indices; i++)
5416                 if (drv->if_indices[i] == ifidx)
5417                         return 1;
5418
5419         return 0;
5420 }
5421
5422
5423 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5424                             const char *bridge_ifname, char *ifname_wds)
5425 {
5426         struct i802_bss *bss = priv;
5427         struct wpa_driver_nl80211_data *drv = bss->drv;
5428         char name[IFNAMSIZ + 1];
5429
5430         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5431         if (ifname_wds)
5432                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5433
5434         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5435                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5436         if (val) {
5437                 if (!if_nametoindex(name)) {
5438                         if (nl80211_create_iface(drv, name,
5439                                                  NL80211_IFTYPE_AP_VLAN,
5440                                                  bss->addr, 1, NULL, NULL, 0) <
5441                             0)
5442                                 return -1;
5443                         if (bridge_ifname &&
5444                             linux_br_add_if(drv->global->ioctl_sock,
5445                                             bridge_ifname, name) < 0)
5446                                 return -1;
5447                 }
5448                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5449                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5450                                    "interface %s up", name);
5451                 }
5452                 return i802_set_sta_vlan(priv, addr, name, 0);
5453         } else {
5454                 if (bridge_ifname)
5455                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5456                                         name);
5457
5458                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5459                 nl80211_remove_iface(drv, if_nametoindex(name));
5460                 return 0;
5461         }
5462 }
5463
5464
5465 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5466 {
5467         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5468         struct sockaddr_ll lladdr;
5469         unsigned char buf[3000];
5470         int len;
5471         socklen_t fromlen = sizeof(lladdr);
5472
5473         len = recvfrom(sock, buf, sizeof(buf), 0,
5474                        (struct sockaddr *)&lladdr, &fromlen);
5475         if (len < 0) {
5476                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5477                            strerror(errno));
5478                 return;
5479         }
5480
5481         if (have_ifidx(drv, lladdr.sll_ifindex))
5482                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5483 }
5484
5485
5486 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5487                              struct i802_bss *bss,
5488                              const char *brname, const char *ifname)
5489 {
5490         int br_ifindex;
5491         char in_br[IFNAMSIZ];
5492
5493         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5494         br_ifindex = if_nametoindex(brname);
5495         if (br_ifindex == 0) {
5496                 /*
5497                  * Bridge was configured, but the bridge device does
5498                  * not exist. Try to add it now.
5499                  */
5500                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5501                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5502                                    "bridge interface %s: %s",
5503                                    brname, strerror(errno));
5504                         return -1;
5505                 }
5506                 bss->added_bridge = 1;
5507                 br_ifindex = if_nametoindex(brname);
5508                 add_ifidx(drv, br_ifindex);
5509         }
5510         bss->br_ifindex = br_ifindex;
5511
5512         if (linux_br_get(in_br, ifname) == 0) {
5513                 if (os_strcmp(in_br, brname) == 0)
5514                         return 0; /* already in the bridge */
5515
5516                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5517                            "bridge %s", ifname, in_br);
5518                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5519                     0) {
5520                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5521                                    "remove interface %s from bridge "
5522                                    "%s: %s",
5523                                    ifname, brname, strerror(errno));
5524                         return -1;
5525                 }
5526         }
5527
5528         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5529                    ifname, brname);
5530         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5531                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5532                            "into bridge %s: %s",
5533                            ifname, brname, strerror(errno));
5534                 return -1;
5535         }
5536         bss->added_if_into_bridge = 1;
5537
5538         return 0;
5539 }
5540
5541
5542 static void *i802_init(struct hostapd_data *hapd,
5543                        struct wpa_init_params *params)
5544 {
5545         struct wpa_driver_nl80211_data *drv;
5546         struct i802_bss *bss;
5547         size_t i;
5548         char brname[IFNAMSIZ];
5549         int ifindex, br_ifindex;
5550         int br_added = 0;
5551
5552         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5553                                           params->global_priv, 1,
5554                                           params->bssid, params->driver_params);
5555         if (bss == NULL)
5556                 return NULL;
5557
5558         drv = bss->drv;
5559
5560         if (linux_br_get(brname, params->ifname) == 0) {
5561                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5562                            params->ifname, brname);
5563                 br_ifindex = if_nametoindex(brname);
5564                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5565         } else {
5566                 brname[0] = '\0';
5567                 br_ifindex = 0;
5568         }
5569         bss->br_ifindex = br_ifindex;
5570
5571         for (i = 0; i < params->num_bridge; i++) {
5572                 if (params->bridge[i]) {
5573                         ifindex = if_nametoindex(params->bridge[i]);
5574                         if (ifindex)
5575                                 add_ifidx(drv, ifindex);
5576                         if (ifindex == br_ifindex)
5577                                 br_added = 1;
5578                 }
5579         }
5580
5581         /* start listening for EAPOL on the default AP interface */
5582         add_ifidx(drv, drv->ifindex);
5583
5584         if (params->num_bridge && params->bridge[0]) {
5585                 if (i802_check_bridge(drv, bss, params->bridge[0],
5586                                       params->ifname) < 0)
5587                         goto failed;
5588                 if (os_strcmp(params->bridge[0], brname) != 0)
5589                         br_added = 1;
5590         }
5591
5592         if (!br_added && br_ifindex &&
5593             (params->num_bridge == 0 || !params->bridge[0]))
5594                 add_ifidx(drv, br_ifindex);
5595
5596 #ifdef CONFIG_LIBNL3_ROUTE
5597         if (bss->added_if_into_bridge) {
5598                 drv->rtnl_sk = nl_socket_alloc();
5599                 if (drv->rtnl_sk == NULL) {
5600                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5601                         goto failed;
5602                 }
5603
5604                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5605                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5606                                    strerror(errno));
5607                         goto failed;
5608                 }
5609         }
5610 #endif /* CONFIG_LIBNL3_ROUTE */
5611
5612         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5613         if (drv->eapol_sock < 0) {
5614                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5615                            strerror(errno));
5616                 goto failed;
5617         }
5618
5619         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5620         {
5621                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5622                 goto failed;
5623         }
5624
5625         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5626                                params->own_addr))
5627                 goto failed;
5628         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5629
5630         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5631
5632         return bss;
5633
5634 failed:
5635         wpa_driver_nl80211_deinit(bss);
5636         return NULL;
5637 }
5638
5639
5640 static void i802_deinit(void *priv)
5641 {
5642         struct i802_bss *bss = priv;
5643         wpa_driver_nl80211_deinit(bss);
5644 }
5645
5646
5647 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5648         enum wpa_driver_if_type type)
5649 {
5650         switch (type) {
5651         case WPA_IF_STATION:
5652                 return NL80211_IFTYPE_STATION;
5653         case WPA_IF_P2P_CLIENT:
5654         case WPA_IF_P2P_GROUP:
5655                 return NL80211_IFTYPE_P2P_CLIENT;
5656         case WPA_IF_AP_VLAN:
5657                 return NL80211_IFTYPE_AP_VLAN;
5658         case WPA_IF_AP_BSS:
5659                 return NL80211_IFTYPE_AP;
5660         case WPA_IF_P2P_GO:
5661                 return NL80211_IFTYPE_P2P_GO;
5662         case WPA_IF_P2P_DEVICE:
5663                 return NL80211_IFTYPE_P2P_DEVICE;
5664         case WPA_IF_MESH:
5665                 return NL80211_IFTYPE_MESH_POINT;
5666         }
5667         return -1;
5668 }
5669
5670
5671 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5672
5673 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5674 {
5675         struct wpa_driver_nl80211_data *drv;
5676         dl_list_for_each(drv, &global->interfaces,
5677                          struct wpa_driver_nl80211_data, list) {
5678                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5679                         return 1;
5680         }
5681         return 0;
5682 }
5683
5684
5685 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5686 {
5687         unsigned int idx;
5688
5689         if (!drv->global)
5690                 return -1;
5691
5692         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5693         for (idx = 0; idx < 64; idx++) {
5694                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5695                 new_addr[0] ^= idx << 2;
5696                 if (!nl80211_addr_in_use(drv->global, new_addr))
5697                         break;
5698         }
5699         if (idx == 64)
5700                 return -1;
5701
5702         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5703                    MACSTR, MAC2STR(new_addr));
5704
5705         return 0;
5706 }
5707
5708 #endif /* CONFIG_P2P || CONFIG_MESH */
5709
5710
5711 struct wdev_info {
5712         u64 wdev_id;
5713         int wdev_id_set;
5714         u8 macaddr[ETH_ALEN];
5715 };
5716
5717 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5718 {
5719         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5720         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5721         struct wdev_info *wi = arg;
5722
5723         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5724                   genlmsg_attrlen(gnlh, 0), NULL);
5725         if (tb[NL80211_ATTR_WDEV]) {
5726                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5727                 wi->wdev_id_set = 1;
5728         }
5729
5730         if (tb[NL80211_ATTR_MAC])
5731                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5732                           ETH_ALEN);
5733
5734         return NL_SKIP;
5735 }
5736
5737
5738 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5739                                      const char *ifname, const u8 *addr,
5740                                      void *bss_ctx, void **drv_priv,
5741                                      char *force_ifname, u8 *if_addr,
5742                                      const char *bridge, int use_existing)
5743 {
5744         enum nl80211_iftype nlmode;
5745         struct i802_bss *bss = priv;
5746         struct wpa_driver_nl80211_data *drv = bss->drv;
5747         int ifidx;
5748         int added = 1;
5749
5750         if (addr)
5751                 os_memcpy(if_addr, addr, ETH_ALEN);
5752         nlmode = wpa_driver_nl80211_if_type(type);
5753         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5754                 struct wdev_info p2pdev_info;
5755
5756                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5757                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5758                                              0, nl80211_wdev_handler,
5759                                              &p2pdev_info, use_existing);
5760                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5761                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5762                                    ifname);
5763                         return -1;
5764                 }
5765
5766                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5767                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5768                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5769                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5770                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5771                            ifname,
5772                            (long long unsigned int) p2pdev_info.wdev_id);
5773         } else {
5774                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5775                                              0, NULL, NULL, use_existing);
5776                 if (use_existing && ifidx == -ENFILE) {
5777                         added = 0;
5778                         ifidx = if_nametoindex(ifname);
5779                 } else if (ifidx < 0) {
5780                         return -1;
5781                 }
5782         }
5783
5784         if (!addr) {
5785                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5786                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5787                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5788                                             bss->ifname, if_addr) < 0) {
5789                         if (added)
5790                                 nl80211_remove_iface(drv, ifidx);
5791                         return -1;
5792                 }
5793         }
5794
5795 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5796         if (!addr &&
5797             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5798              type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
5799                 /* Enforce unique P2P Interface Address */
5800                 u8 new_addr[ETH_ALEN];
5801
5802                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5803                                        new_addr) < 0) {
5804                         if (added)
5805                                 nl80211_remove_iface(drv, ifidx);
5806                         return -1;
5807                 }
5808                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5809                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5810                                    "for %s interface", type == WPA_IF_MESH ?
5811                                    "mesh" : "P2P group");
5812                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5813                                 if (added)
5814                                         nl80211_remove_iface(drv, ifidx);
5815                                 return -1;
5816                         }
5817                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5818                                                new_addr) < 0) {
5819                                 if (added)
5820                                         nl80211_remove_iface(drv, ifidx);
5821                                 return -1;
5822                         }
5823                 }
5824                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5825         }
5826 #endif /* CONFIG_P2P || CONFIG_MESH */
5827
5828         if (type == WPA_IF_AP_BSS) {
5829                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5830                 if (new_bss == NULL) {
5831                         if (added)
5832                                 nl80211_remove_iface(drv, ifidx);
5833                         return -1;
5834                 }
5835
5836                 if (bridge &&
5837                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5838                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5839                                    "interface %s to a bridge %s",
5840                                    ifname, bridge);
5841                         if (added)
5842                                 nl80211_remove_iface(drv, ifidx);
5843                         os_free(new_bss);
5844                         return -1;
5845                 }
5846
5847                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5848                 {
5849                         if (added)
5850                                 nl80211_remove_iface(drv, ifidx);
5851                         os_free(new_bss);
5852                         return -1;
5853                 }
5854                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5855                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5856                 new_bss->ifindex = ifidx;
5857                 new_bss->drv = drv;
5858                 new_bss->next = drv->first_bss->next;
5859                 new_bss->freq = drv->first_bss->freq;
5860                 new_bss->ctx = bss_ctx;
5861                 new_bss->added_if = added;
5862                 drv->first_bss->next = new_bss;
5863                 if (drv_priv)
5864                         *drv_priv = new_bss;
5865                 nl80211_init_bss(new_bss);
5866
5867                 /* Subscribe management frames for this WPA_IF_AP_BSS */
5868                 if (nl80211_setup_ap(new_bss))
5869                         return -1;
5870         }
5871
5872         if (drv->global)
5873                 drv->global->if_add_ifindex = ifidx;
5874
5875         /*
5876          * Some virtual interfaces need to process EAPOL packets and events on
5877          * the parent interface. This is used mainly with hostapd.
5878          */
5879         if (ifidx > 0 &&
5880             (drv->hostapd ||
5881              nlmode == NL80211_IFTYPE_AP_VLAN ||
5882              nlmode == NL80211_IFTYPE_WDS ||
5883              nlmode == NL80211_IFTYPE_MONITOR))
5884                 add_ifidx(drv, ifidx);
5885
5886         return 0;
5887 }
5888
5889
5890 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
5891                                         enum wpa_driver_if_type type,
5892                                         const char *ifname)
5893 {
5894         struct wpa_driver_nl80211_data *drv = bss->drv;
5895         int ifindex = if_nametoindex(ifname);
5896
5897         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
5898                    __func__, type, ifname, ifindex, bss->added_if);
5899         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
5900                 nl80211_remove_iface(drv, ifindex);
5901         else if (ifindex > 0 && !bss->added_if) {
5902                 struct wpa_driver_nl80211_data *drv2;
5903                 dl_list_for_each(drv2, &drv->global->interfaces,
5904                                  struct wpa_driver_nl80211_data, list)
5905                         del_ifidx(drv2, ifindex);
5906         }
5907
5908         if (type != WPA_IF_AP_BSS)
5909                 return 0;
5910
5911         if (bss->added_if_into_bridge) {
5912                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
5913                                     bss->ifname) < 0)
5914                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5915                                    "interface %s from bridge %s: %s",
5916                                    bss->ifname, bss->brname, strerror(errno));
5917         }
5918         if (bss->added_bridge) {
5919                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
5920                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5921                                    "bridge %s: %s",
5922                                    bss->brname, strerror(errno));
5923         }
5924
5925         if (bss != drv->first_bss) {
5926                 struct i802_bss *tbss;
5927
5928                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
5929                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
5930                         if (tbss->next == bss) {
5931                                 tbss->next = bss->next;
5932                                 /* Unsubscribe management frames */
5933                                 nl80211_teardown_ap(bss);
5934                                 nl80211_destroy_bss(bss);
5935                                 if (!bss->added_if)
5936                                         i802_set_iface_flags(bss, 0);
5937                                 os_free(bss);
5938                                 bss = NULL;
5939                                 break;
5940                         }
5941                 }
5942                 if (bss)
5943                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
5944                                    "BSS %p in the list", __func__, bss);
5945         } else {
5946                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
5947                 nl80211_teardown_ap(bss);
5948                 if (!bss->added_if && !drv->first_bss->next)
5949                         wpa_driver_nl80211_del_beacon(drv);
5950                 nl80211_destroy_bss(bss);
5951                 if (!bss->added_if)
5952                         i802_set_iface_flags(bss, 0);
5953                 if (drv->first_bss->next) {
5954                         drv->first_bss = drv->first_bss->next;
5955                         drv->ctx = drv->first_bss->ctx;
5956                         os_free(bss);
5957                 } else {
5958                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
5959                 }
5960         }
5961
5962         return 0;
5963 }
5964
5965
5966 static int cookie_handler(struct nl_msg *msg, void *arg)
5967 {
5968         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5969         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5970         u64 *cookie = arg;
5971         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5972                   genlmsg_attrlen(gnlh, 0), NULL);
5973         if (tb[NL80211_ATTR_COOKIE])
5974                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5975         return NL_SKIP;
5976 }
5977
5978
5979 static int nl80211_send_frame_cmd(struct i802_bss *bss,
5980                                   unsigned int freq, unsigned int wait,
5981                                   const u8 *buf, size_t buf_len,
5982                                   u64 *cookie_out, int no_cck, int no_ack,
5983                                   int offchanok)
5984 {
5985         struct wpa_driver_nl80211_data *drv = bss->drv;
5986         struct nl_msg *msg;
5987         u64 cookie;
5988         int ret = -1;
5989
5990         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
5991                    "no_ack=%d offchanok=%d",
5992                    freq, wait, no_cck, no_ack, offchanok);
5993         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
5994
5995         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
5996             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
5997             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
5998             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
5999                            drv->test_use_roc_tx) &&
6000              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6001             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6002             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6003             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6004                 goto fail;
6005
6006         cookie = 0;
6007         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6008         msg = NULL;
6009         if (ret) {
6010                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6011                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6012                            freq, wait);
6013         } else {
6014                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6015                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6016                            (long long unsigned int) cookie);
6017
6018                 if (cookie_out)
6019                         *cookie_out = no_ack ? (u64) -1 : cookie;
6020         }
6021
6022 fail:
6023         nlmsg_free(msg);
6024         return ret;
6025 }
6026
6027
6028 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6029                                           unsigned int freq,
6030                                           unsigned int wait_time,
6031                                           const u8 *dst, const u8 *src,
6032                                           const u8 *bssid,
6033                                           const u8 *data, size_t data_len,
6034                                           int no_cck)
6035 {
6036         struct wpa_driver_nl80211_data *drv = bss->drv;
6037         int ret = -1;
6038         u8 *buf;
6039         struct ieee80211_hdr *hdr;
6040
6041         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6042                    "freq=%u MHz wait=%d ms no_cck=%d)",
6043                    drv->ifindex, freq, wait_time, no_cck);
6044
6045         buf = os_zalloc(24 + data_len);
6046         if (buf == NULL)
6047                 return ret;
6048         os_memcpy(buf + 24, data, data_len);
6049         hdr = (struct ieee80211_hdr *) buf;
6050         hdr->frame_control =
6051                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6052         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6053         os_memcpy(hdr->addr2, src, ETH_ALEN);
6054         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6055
6056         if (is_ap_interface(drv->nlmode) &&
6057             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6058              (int) freq == bss->freq || drv->device_ap_sme ||
6059              !drv->use_monitor))
6060                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6061                                                    0, freq, no_cck, 1,
6062                                                    wait_time);
6063         else
6064                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6065                                              24 + data_len,
6066                                              &drv->send_action_cookie,
6067                                              no_cck, 0, 1);
6068
6069         os_free(buf);
6070         return ret;
6071 }
6072
6073
6074 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6075 {
6076         struct i802_bss *bss = priv;
6077         struct wpa_driver_nl80211_data *drv = bss->drv;
6078         struct nl_msg *msg;
6079         int ret;
6080
6081         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6082                    (long long unsigned int) drv->send_action_cookie);
6083         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6084             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6085                 nlmsg_free(msg);
6086                 return;
6087         }
6088
6089         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6090         if (ret)
6091                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6092                            "(%s)", ret, strerror(-ret));
6093 }
6094
6095
6096 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6097                                                 unsigned int duration)
6098 {
6099         struct i802_bss *bss = priv;
6100         struct wpa_driver_nl80211_data *drv = bss->drv;
6101         struct nl_msg *msg;
6102         int ret;
6103         u64 cookie;
6104
6105         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6106             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6107             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6108                 nlmsg_free(msg);
6109                 return -1;
6110         }
6111
6112         cookie = 0;
6113         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6114         if (ret == 0) {
6115                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6116                            "0x%llx for freq=%u MHz duration=%u",
6117                            (long long unsigned int) cookie, freq, duration);
6118                 drv->remain_on_chan_cookie = cookie;
6119                 drv->pending_remain_on_chan = 1;
6120                 return 0;
6121         }
6122         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6123                    "(freq=%d duration=%u): %d (%s)",
6124                    freq, duration, ret, strerror(-ret));
6125         return -1;
6126 }
6127
6128
6129 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6130 {
6131         struct i802_bss *bss = priv;
6132         struct wpa_driver_nl80211_data *drv = bss->drv;
6133         struct nl_msg *msg;
6134         int ret;
6135
6136         if (!drv->pending_remain_on_chan) {
6137                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6138                            "to cancel");
6139                 return -1;
6140         }
6141
6142         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6143                    "0x%llx",
6144                    (long long unsigned int) drv->remain_on_chan_cookie);
6145
6146         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6147         if (!msg ||
6148             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6149                 nlmsg_free(msg);
6150                 return -1;
6151         }
6152
6153         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6154         if (ret == 0)
6155                 return 0;
6156         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6157                    "%d (%s)", ret, strerror(-ret));
6158         return -1;
6159 }
6160
6161
6162 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6163 {
6164         struct wpa_driver_nl80211_data *drv = bss->drv;
6165
6166         if (!report) {
6167                 if (bss->nl_preq && drv->device_ap_sme &&
6168                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6169                     !bss->static_ap) {
6170                         /*
6171                          * Do not disable Probe Request reporting that was
6172                          * enabled in nl80211_setup_ap().
6173                          */
6174                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6175                                    "Probe Request reporting nl_preq=%p while "
6176                                    "in AP mode", bss->nl_preq);
6177                 } else if (bss->nl_preq) {
6178                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6179                                    "reporting nl_preq=%p", bss->nl_preq);
6180                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6181                 }
6182                 return 0;
6183         }
6184
6185         if (bss->nl_preq) {
6186                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6187                            "already on! nl_preq=%p", bss->nl_preq);
6188                 return 0;
6189         }
6190
6191         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6192         if (bss->nl_preq == NULL)
6193                 return -1;
6194         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6195                    "reporting nl_preq=%p", bss->nl_preq);
6196
6197         if (nl80211_register_frame(bss, bss->nl_preq,
6198                                    (WLAN_FC_TYPE_MGMT << 2) |
6199                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6200                                    NULL, 0) < 0)
6201                 goto out_err;
6202
6203         nl80211_register_eloop_read(&bss->nl_preq,
6204                                     wpa_driver_nl80211_event_receive,
6205                                     bss->nl_cb);
6206
6207         return 0;
6208
6209  out_err:
6210         nl_destroy_handles(&bss->nl_preq);
6211         return -1;
6212 }
6213
6214
6215 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6216                                      int ifindex, int disabled)
6217 {
6218         struct nl_msg *msg;
6219         struct nlattr *bands, *band;
6220         int ret;
6221
6222         wpa_printf(MSG_DEBUG,
6223                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6224                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6225                    "no NL80211_TXRATE_LEGACY constraint");
6226
6227         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6228                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6229         if (!msg)
6230                 return -1;
6231
6232         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6233         if (!bands)
6234                 goto fail;
6235
6236         /*
6237          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6238          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6239          * rates. All 5 GHz rates are left enabled.
6240          */
6241         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6242         if (!band ||
6243             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6244                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6245                 goto fail;
6246         nla_nest_end(msg, band);
6247
6248         nla_nest_end(msg, bands);
6249
6250         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6251         if (ret) {
6252                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6253                            "(%s)", ret, strerror(-ret));
6254         } else
6255                 drv->disabled_11b_rates = disabled;
6256
6257         return ret;
6258
6259 fail:
6260         nlmsg_free(msg);
6261         return -1;
6262 }
6263
6264
6265 static int wpa_driver_nl80211_deinit_ap(void *priv)
6266 {
6267         struct i802_bss *bss = priv;
6268         struct wpa_driver_nl80211_data *drv = bss->drv;
6269         if (!is_ap_interface(drv->nlmode))
6270                 return -1;
6271         wpa_driver_nl80211_del_beacon(drv);
6272         bss->beacon_set = 0;
6273
6274         /*
6275          * If the P2P GO interface was dynamically added, then it is
6276          * possible that the interface change to station is not possible.
6277          */
6278         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6279                 return 0;
6280
6281         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6282 }
6283
6284
6285 static int wpa_driver_nl80211_stop_ap(void *priv)
6286 {
6287         struct i802_bss *bss = priv;
6288         struct wpa_driver_nl80211_data *drv = bss->drv;
6289         if (!is_ap_interface(drv->nlmode))
6290                 return -1;
6291         wpa_driver_nl80211_del_beacon(drv);
6292         bss->beacon_set = 0;
6293         return 0;
6294 }
6295
6296
6297 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6298 {
6299         struct i802_bss *bss = priv;
6300         struct wpa_driver_nl80211_data *drv = bss->drv;
6301         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6302                 return -1;
6303
6304         /*
6305          * If the P2P Client interface was dynamically added, then it is
6306          * possible that the interface change to station is not possible.
6307          */
6308         if (bss->if_dynamic)
6309                 return 0;
6310
6311         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6312 }
6313
6314
6315 static void wpa_driver_nl80211_resume(void *priv)
6316 {
6317         struct i802_bss *bss = priv;
6318
6319         if (i802_set_iface_flags(bss, 1))
6320                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6321 }
6322
6323
6324 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6325 {
6326         struct i802_bss *bss = priv;
6327         struct wpa_driver_nl80211_data *drv = bss->drv;
6328         struct nl_msg *msg;
6329         struct nlattr *cqm;
6330
6331         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6332                    "hysteresis=%d", threshold, hysteresis);
6333
6334         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6335             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6336             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6337             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6338                 nlmsg_free(msg);
6339                 return -1;
6340         }
6341         nla_nest_end(msg, cqm);
6342
6343         return send_and_recv_msgs(drv, msg, NULL, NULL);
6344 }
6345
6346
6347 static int get_channel_width(struct nl_msg *msg, void *arg)
6348 {
6349         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6350         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6351         struct wpa_signal_info *sig_change = arg;
6352
6353         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6354                   genlmsg_attrlen(gnlh, 0), NULL);
6355
6356         sig_change->center_frq1 = -1;
6357         sig_change->center_frq2 = -1;
6358         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6359
6360         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6361                 sig_change->chanwidth = convert2width(
6362                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6363                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6364                         sig_change->center_frq1 =
6365                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6366                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6367                         sig_change->center_frq2 =
6368                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6369         }
6370
6371         return NL_SKIP;
6372 }
6373
6374
6375 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6376                                      struct wpa_signal_info *sig)
6377 {
6378         struct nl_msg *msg;
6379
6380         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6381         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6382 }
6383
6384
6385 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6386 {
6387         struct i802_bss *bss = priv;
6388         struct wpa_driver_nl80211_data *drv = bss->drv;
6389         int res;
6390
6391         os_memset(si, 0, sizeof(*si));
6392         res = nl80211_get_link_signal(drv, si);
6393         if (res != 0)
6394                 return res;
6395
6396         res = nl80211_get_channel_width(drv, si);
6397         if (res != 0)
6398                 return res;
6399
6400         return nl80211_get_link_noise(drv, si);
6401 }
6402
6403
6404 static int wpa_driver_nl80211_shared_freq(void *priv)
6405 {
6406         struct i802_bss *bss = priv;
6407         struct wpa_driver_nl80211_data *drv = bss->drv;
6408         struct wpa_driver_nl80211_data *driver;
6409         int freq = 0;
6410
6411         /*
6412          * If the same PHY is in connected state with some other interface,
6413          * then retrieve the assoc freq.
6414          */
6415         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
6416                    drv->phyname);
6417
6418         dl_list_for_each(driver, &drv->global->interfaces,
6419                          struct wpa_driver_nl80211_data, list) {
6420                 if (drv == driver ||
6421                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
6422                     !driver->associated)
6423                         continue;
6424
6425                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
6426                            MACSTR,
6427                            driver->phyname, driver->first_bss->ifname,
6428                            MAC2STR(driver->first_bss->addr));
6429                 if (is_ap_interface(driver->nlmode))
6430                         freq = driver->first_bss->freq;
6431                 else
6432                         freq = nl80211_get_assoc_freq(driver);
6433                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
6434                            drv->phyname, freq);
6435         }
6436
6437         if (!freq)
6438                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
6439                            "PHY (%s) in associated state", drv->phyname);
6440
6441         return freq;
6442 }
6443
6444
6445 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6446                               int encrypt)
6447 {
6448         struct i802_bss *bss = priv;
6449         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6450                                              0, 0, 0, 0);
6451 }
6452
6453
6454 static int nl80211_set_param(void *priv, const char *param)
6455 {
6456         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6457         if (param == NULL)
6458                 return 0;
6459
6460 #ifdef CONFIG_P2P
6461         if (os_strstr(param, "use_p2p_group_interface=1")) {
6462                 struct i802_bss *bss = priv;
6463                 struct wpa_driver_nl80211_data *drv = bss->drv;
6464
6465                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6466                            "interface");
6467                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6468                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6469         }
6470 #endif /* CONFIG_P2P */
6471
6472         if (os_strstr(param, "use_monitor=1")) {
6473                 struct i802_bss *bss = priv;
6474                 struct wpa_driver_nl80211_data *drv = bss->drv;
6475                 drv->use_monitor = 1;
6476         }
6477
6478         if (os_strstr(param, "force_connect_cmd=1")) {
6479                 struct i802_bss *bss = priv;
6480                 struct wpa_driver_nl80211_data *drv = bss->drv;
6481                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6482                 drv->force_connect_cmd = 1;
6483         }
6484
6485         if (os_strstr(param, "no_offchannel_tx=1")) {
6486                 struct i802_bss *bss = priv;
6487                 struct wpa_driver_nl80211_data *drv = bss->drv;
6488                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6489                 drv->test_use_roc_tx = 1;
6490         }
6491
6492         return 0;
6493 }
6494
6495
6496 static void * nl80211_global_init(void)
6497 {
6498         struct nl80211_global *global;
6499         struct netlink_config *cfg;
6500
6501         global = os_zalloc(sizeof(*global));
6502         if (global == NULL)
6503                 return NULL;
6504         global->ioctl_sock = -1;
6505         dl_list_init(&global->interfaces);
6506         global->if_add_ifindex = -1;
6507
6508         cfg = os_zalloc(sizeof(*cfg));
6509         if (cfg == NULL)
6510                 goto err;
6511
6512         cfg->ctx = global;
6513         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6514         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6515         global->netlink = netlink_init(cfg);
6516         if (global->netlink == NULL) {
6517                 os_free(cfg);
6518                 goto err;
6519         }
6520
6521         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6522                 goto err;
6523
6524         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6525         if (global->ioctl_sock < 0) {
6526                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6527                            strerror(errno));
6528                 goto err;
6529         }
6530
6531         return global;
6532
6533 err:
6534         nl80211_global_deinit(global);
6535         return NULL;
6536 }
6537
6538
6539 static void nl80211_global_deinit(void *priv)
6540 {
6541         struct nl80211_global *global = priv;
6542         if (global == NULL)
6543                 return;
6544         if (!dl_list_empty(&global->interfaces)) {
6545                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6546                            "nl80211_global_deinit",
6547                            dl_list_len(&global->interfaces));
6548         }
6549
6550         if (global->netlink)
6551                 netlink_deinit(global->netlink);
6552
6553         nl_destroy_handles(&global->nl);
6554
6555         if (global->nl_event)
6556                 nl80211_destroy_eloop_handle(&global->nl_event);
6557
6558         nl_cb_put(global->nl_cb);
6559
6560         if (global->ioctl_sock >= 0)
6561                 close(global->ioctl_sock);
6562
6563         os_free(global);
6564 }
6565
6566
6567 static const char * nl80211_get_radio_name(void *priv)
6568 {
6569         struct i802_bss *bss = priv;
6570         struct wpa_driver_nl80211_data *drv = bss->drv;
6571         return drv->phyname;
6572 }
6573
6574
6575 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6576                          const u8 *pmkid)
6577 {
6578         struct nl_msg *msg;
6579
6580         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6581             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6582             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6583                 nlmsg_free(msg);
6584                 return -ENOBUFS;
6585         }
6586
6587         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6588 }
6589
6590
6591 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6592 {
6593         struct i802_bss *bss = priv;
6594         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6595         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6596 }
6597
6598
6599 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6600 {
6601         struct i802_bss *bss = priv;
6602         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6603                    MAC2STR(bssid));
6604         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6605 }
6606
6607
6608 static int nl80211_flush_pmkid(void *priv)
6609 {
6610         struct i802_bss *bss = priv;
6611         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6612         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6613 }
6614
6615
6616 static void clean_survey_results(struct survey_results *survey_results)
6617 {
6618         struct freq_survey *survey, *tmp;
6619
6620         if (dl_list_empty(&survey_results->survey_list))
6621                 return;
6622
6623         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6624                               struct freq_survey, list) {
6625                 dl_list_del(&survey->list);
6626                 os_free(survey);
6627         }
6628 }
6629
6630
6631 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6632                        struct dl_list *survey_list)
6633 {
6634         struct freq_survey *survey;
6635
6636         survey = os_zalloc(sizeof(struct freq_survey));
6637         if  (!survey)
6638                 return;
6639
6640         survey->ifidx = ifidx;
6641         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6642         survey->filled = 0;
6643
6644         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6645                 survey->nf = (int8_t)
6646                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6647                 survey->filled |= SURVEY_HAS_NF;
6648         }
6649
6650         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6651                 survey->channel_time =
6652                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6653                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6654         }
6655
6656         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6657                 survey->channel_time_busy =
6658                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6659                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6660         }
6661
6662         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6663                 survey->channel_time_rx =
6664                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6665                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6666         }
6667
6668         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6669                 survey->channel_time_tx =
6670                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6671                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6672         }
6673
6674         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)",
6675                    survey->freq,
6676                    survey->nf,
6677                    (unsigned long int) survey->channel_time,
6678                    (unsigned long int) survey->channel_time_busy,
6679                    (unsigned long int) survey->channel_time_tx,
6680                    (unsigned long int) survey->channel_time_rx,
6681                    survey->filled);
6682
6683         dl_list_add_tail(survey_list, &survey->list);
6684 }
6685
6686
6687 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6688                            unsigned int freq_filter)
6689 {
6690         if (!freq_filter)
6691                 return 1;
6692
6693         return freq_filter == surveyed_freq;
6694 }
6695
6696
6697 static int survey_handler(struct nl_msg *msg, void *arg)
6698 {
6699         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6700         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6701         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6702         struct survey_results *survey_results;
6703         u32 surveyed_freq = 0;
6704         u32 ifidx;
6705
6706         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6707                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6708                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6709         };
6710
6711         survey_results = (struct survey_results *) arg;
6712
6713         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6714                   genlmsg_attrlen(gnlh, 0), NULL);
6715
6716         if (!tb[NL80211_ATTR_IFINDEX])
6717                 return NL_SKIP;
6718
6719         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6720
6721         if (!tb[NL80211_ATTR_SURVEY_INFO])
6722                 return NL_SKIP;
6723
6724         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6725                              tb[NL80211_ATTR_SURVEY_INFO],
6726                              survey_policy))
6727                 return NL_SKIP;
6728
6729         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6730                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6731                 return NL_SKIP;
6732         }
6733
6734         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6735
6736         if (!check_survey_ok(sinfo, surveyed_freq,
6737                              survey_results->freq_filter))
6738                 return NL_SKIP;
6739
6740         if (survey_results->freq_filter &&
6741             survey_results->freq_filter != surveyed_freq) {
6742                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6743                            surveyed_freq);
6744                 return NL_SKIP;
6745         }
6746
6747         add_survey(sinfo, ifidx, &survey_results->survey_list);
6748
6749         return NL_SKIP;
6750 }
6751
6752
6753 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6754 {
6755         struct i802_bss *bss = priv;
6756         struct wpa_driver_nl80211_data *drv = bss->drv;
6757         struct nl_msg *msg;
6758         int err;
6759         union wpa_event_data data;
6760         struct survey_results *survey_results;
6761
6762         os_memset(&data, 0, sizeof(data));
6763         survey_results = &data.survey_results;
6764
6765         dl_list_init(&survey_results->survey_list);
6766
6767         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6768         if (!msg)
6769                 return -ENOBUFS;
6770
6771         if (freq)
6772                 data.survey_results.freq_filter = freq;
6773
6774         do {
6775                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6776                 err = send_and_recv_msgs(drv, msg, survey_handler,
6777                                          survey_results);
6778         } while (err > 0);
6779
6780         if (err)
6781                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6782         else
6783                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6784
6785         clean_survey_results(survey_results);
6786         return err;
6787 }
6788
6789
6790 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
6791                                    const u8 *kck, size_t kck_len,
6792                                    const u8 *replay_ctr)
6793 {
6794         struct i802_bss *bss = priv;
6795         struct wpa_driver_nl80211_data *drv = bss->drv;
6796         struct nlattr *replay_nested;
6797         struct nl_msg *msg;
6798         int ret;
6799
6800         if (!drv->set_rekey_offload)
6801                 return;
6802
6803         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6804         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6805             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6806             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
6807             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
6808             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6809                     replay_ctr)) {
6810                 nl80211_nlmsg_clear(msg);
6811                 nlmsg_free(msg);
6812                 return;
6813         }
6814
6815         nla_nest_end(msg, replay_nested);
6816
6817         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6818         if (ret == -EOPNOTSUPP) {
6819                 wpa_printf(MSG_DEBUG,
6820                            "nl80211: Driver does not support rekey offload");
6821                 drv->set_rekey_offload = 0;
6822         }
6823 }
6824
6825
6826 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6827                                     const u8 *addr, int qos)
6828 {
6829         /* send data frame to poll STA and check whether
6830          * this frame is ACKed */
6831         struct {
6832                 struct ieee80211_hdr hdr;
6833                 u16 qos_ctl;
6834         } STRUCT_PACKED nulldata;
6835         size_t size;
6836
6837         /* Send data frame to poll STA and check whether this frame is ACKed */
6838
6839         os_memset(&nulldata, 0, sizeof(nulldata));
6840
6841         if (qos) {
6842                 nulldata.hdr.frame_control =
6843                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6844                                      WLAN_FC_STYPE_QOS_NULL);
6845                 size = sizeof(nulldata);
6846         } else {
6847                 nulldata.hdr.frame_control =
6848                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6849                                      WLAN_FC_STYPE_NULLFUNC);
6850                 size = sizeof(struct ieee80211_hdr);
6851         }
6852
6853         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6854         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6855         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6856         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6857
6858         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6859                                          0, 0) < 0)
6860                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6861                            "send poll frame");
6862 }
6863
6864 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6865                                 int qos)
6866 {
6867         struct i802_bss *bss = priv;
6868         struct wpa_driver_nl80211_data *drv = bss->drv;
6869         struct nl_msg *msg;
6870
6871         if (!drv->poll_command_supported) {
6872                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6873                 return;
6874         }
6875
6876         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6877             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6878                 nlmsg_free(msg);
6879                 return;
6880         }
6881
6882         send_and_recv_msgs(drv, msg, NULL, NULL);
6883 }
6884
6885
6886 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
6887 {
6888         struct nl_msg *msg;
6889
6890         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
6891             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
6892                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
6893                 nlmsg_free(msg);
6894                 return -ENOBUFS;
6895         }
6896         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6897 }
6898
6899
6900 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
6901                                      int ctwindow)
6902 {
6903         struct i802_bss *bss = priv;
6904
6905         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
6906                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
6907
6908         if (opp_ps != -1 || ctwindow != -1) {
6909 #ifdef ANDROID_P2P
6910                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
6911 #else /* ANDROID_P2P */
6912                 return -1; /* Not yet supported */
6913 #endif /* ANDROID_P2P */
6914         }
6915
6916         if (legacy_ps == -1)
6917                 return 0;
6918         if (legacy_ps != 0 && legacy_ps != 1)
6919                 return -1; /* Not yet supported */
6920
6921         return nl80211_set_power_save(bss, legacy_ps);
6922 }
6923
6924
6925 static int nl80211_start_radar_detection(void *priv,
6926                                          struct hostapd_freq_params *freq)
6927 {
6928         struct i802_bss *bss = priv;
6929         struct wpa_driver_nl80211_data *drv = bss->drv;
6930         struct nl_msg *msg;
6931         int ret;
6932
6933         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)",
6934                    freq->freq, freq->ht_enabled, freq->vht_enabled,
6935                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
6936
6937         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
6938                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
6939                            "detection");
6940                 return -1;
6941         }
6942
6943         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
6944             nl80211_put_freq_params(msg, freq) < 0) {
6945                 nlmsg_free(msg);
6946                 return -1;
6947         }
6948
6949         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6950         if (ret == 0)
6951                 return 0;
6952         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
6953                    "%d (%s)", ret, strerror(-ret));
6954         return -1;
6955 }
6956
6957 #ifdef CONFIG_TDLS
6958
6959 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
6960                                   u8 dialog_token, u16 status_code,
6961                                   u32 peer_capab, int initiator, const u8 *buf,
6962                                   size_t len)
6963 {
6964         struct i802_bss *bss = priv;
6965         struct wpa_driver_nl80211_data *drv = bss->drv;
6966         struct nl_msg *msg;
6967
6968         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
6969                 return -EOPNOTSUPP;
6970
6971         if (!dst)
6972                 return -EINVAL;
6973
6974         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
6975             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6976             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
6977             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
6978             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
6979                 goto fail;
6980         if (peer_capab) {
6981                 /*
6982                  * The internal enum tdls_peer_capability definition is
6983                  * currently identical with the nl80211 enum
6984                  * nl80211_tdls_peer_capability, so no conversion is needed
6985                  * here.
6986                  */
6987                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
6988                                 peer_capab))
6989                         goto fail;
6990         }
6991         if ((initiator &&
6992              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
6993             nla_put(msg, NL80211_ATTR_IE, len, buf))
6994                 goto fail;
6995
6996         return send_and_recv_msgs(drv, msg, NULL, NULL);
6997
6998 fail:
6999         nlmsg_free(msg);
7000         return -ENOBUFS;
7001 }
7002
7003
7004 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7005 {
7006         struct i802_bss *bss = priv;
7007         struct wpa_driver_nl80211_data *drv = bss->drv;
7008         struct nl_msg *msg;
7009         enum nl80211_tdls_operation nl80211_oper;
7010
7011         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7012                 return -EOPNOTSUPP;
7013
7014         switch (oper) {
7015         case TDLS_DISCOVERY_REQ:
7016                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7017                 break;
7018         case TDLS_SETUP:
7019                 nl80211_oper = NL80211_TDLS_SETUP;
7020                 break;
7021         case TDLS_TEARDOWN:
7022                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7023                 break;
7024         case TDLS_ENABLE_LINK:
7025                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7026                 break;
7027         case TDLS_DISABLE_LINK:
7028                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7029                 break;
7030         case TDLS_ENABLE:
7031                 return 0;
7032         case TDLS_DISABLE:
7033                 return 0;
7034         default:
7035                 return -EINVAL;
7036         }
7037
7038         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7039             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7040             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7041                 nlmsg_free(msg);
7042                 return -ENOBUFS;
7043         }
7044
7045         return send_and_recv_msgs(drv, msg, NULL, NULL);
7046 }
7047
7048
7049 static int
7050 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7051                                    const struct hostapd_freq_params *params)
7052 {
7053         struct i802_bss *bss = priv;
7054         struct wpa_driver_nl80211_data *drv = bss->drv;
7055         struct nl_msg *msg;
7056         int ret = -ENOBUFS;
7057
7058         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7059             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7060                 return -EOPNOTSUPP;
7061
7062         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7063                    " oper_class=%u freq=%u",
7064                    MAC2STR(addr), oper_class, params->freq);
7065         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7066         if (!msg ||
7067             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7068             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7069             (ret = nl80211_put_freq_params(msg, params))) {
7070                 nlmsg_free(msg);
7071                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7072                 return ret;
7073         }
7074
7075         return send_and_recv_msgs(drv, msg, NULL, NULL);
7076 }
7077
7078
7079 static int
7080 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7081 {
7082         struct i802_bss *bss = priv;
7083         struct wpa_driver_nl80211_data *drv = bss->drv;
7084         struct nl_msg *msg;
7085
7086         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7087             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7088                 return -EOPNOTSUPP;
7089
7090         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7091                    MAC2STR(addr));
7092         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7093         if (!msg ||
7094             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7095                 nlmsg_free(msg);
7096                 wpa_printf(MSG_DEBUG,
7097                            "nl80211: Could not build TDLS cancel chan switch");
7098                 return -ENOBUFS;
7099         }
7100
7101         return send_and_recv_msgs(drv, msg, NULL, NULL);
7102 }
7103
7104 #endif /* CONFIG TDLS */
7105
7106
7107 static int driver_nl80211_set_key(const char *ifname, void *priv,
7108                                   enum wpa_alg alg, const u8 *addr,
7109                                   int key_idx, int set_tx,
7110                                   const u8 *seq, size_t seq_len,
7111                                   const u8 *key, size_t key_len)
7112 {
7113         struct i802_bss *bss = priv;
7114         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7115                                           set_tx, seq, seq_len, key, key_len);
7116 }
7117
7118
7119 static int driver_nl80211_scan2(void *priv,
7120                                 struct wpa_driver_scan_params *params)
7121 {
7122         struct i802_bss *bss = priv;
7123         return wpa_driver_nl80211_scan(bss, params);
7124 }
7125
7126
7127 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7128                                          int reason_code)
7129 {
7130         struct i802_bss *bss = priv;
7131         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7132 }
7133
7134
7135 static int driver_nl80211_authenticate(void *priv,
7136                                        struct wpa_driver_auth_params *params)
7137 {
7138         struct i802_bss *bss = priv;
7139         return wpa_driver_nl80211_authenticate(bss, params);
7140 }
7141
7142
7143 static void driver_nl80211_deinit(void *priv)
7144 {
7145         struct i802_bss *bss = priv;
7146         wpa_driver_nl80211_deinit(bss);
7147 }
7148
7149
7150 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7151                                     const char *ifname)
7152 {
7153         struct i802_bss *bss = priv;
7154         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7155 }
7156
7157
7158 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7159                                     size_t data_len, int noack)
7160 {
7161         struct i802_bss *bss = priv;
7162         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7163                                             0, 0, 0, 0);
7164 }
7165
7166
7167 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7168 {
7169         struct i802_bss *bss = priv;
7170         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7171 }
7172
7173
7174 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7175                                        const char *ifname, int vlan_id)
7176 {
7177         struct i802_bss *bss = priv;
7178         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7179 }
7180
7181
7182 static int driver_nl80211_read_sta_data(void *priv,
7183                                         struct hostap_sta_driver_data *data,
7184                                         const u8 *addr)
7185 {
7186         struct i802_bss *bss = priv;
7187         return i802_read_sta_data(bss, data, addr);
7188 }
7189
7190
7191 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7192                                       unsigned int wait_time,
7193                                       const u8 *dst, const u8 *src,
7194                                       const u8 *bssid,
7195                                       const u8 *data, size_t data_len,
7196                                       int no_cck)
7197 {
7198         struct i802_bss *bss = priv;
7199         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7200                                               bssid, data, data_len, no_cck);
7201 }
7202
7203
7204 static int driver_nl80211_probe_req_report(void *priv, int report)
7205 {
7206         struct i802_bss *bss = priv;
7207         return wpa_driver_nl80211_probe_req_report(bss, report);
7208 }
7209
7210
7211 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7212                                             const u8 *ies, size_t ies_len)
7213 {
7214         int ret;
7215         struct nl_msg *msg;
7216         struct i802_bss *bss = priv;
7217         struct wpa_driver_nl80211_data *drv = bss->drv;
7218         u16 mdid = WPA_GET_LE16(md);
7219
7220         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7221         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7222             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7223             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7224                 nlmsg_free(msg);
7225                 return -ENOBUFS;
7226         }
7227
7228         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7229         if (ret) {
7230                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7231                            "err=%d (%s)", ret, strerror(-ret));
7232         }
7233
7234         return ret;
7235 }
7236
7237
7238 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7239 {
7240         struct i802_bss *bss = priv;
7241         struct wpa_driver_nl80211_data *drv = bss->drv;
7242
7243         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7244                 return NULL;
7245
7246         return bss->addr;
7247 }
7248
7249
7250 static const char * scan_state_str(enum scan_states scan_state)
7251 {
7252         switch (scan_state) {
7253         case NO_SCAN:
7254                 return "NO_SCAN";
7255         case SCAN_REQUESTED:
7256                 return "SCAN_REQUESTED";
7257         case SCAN_STARTED:
7258                 return "SCAN_STARTED";
7259         case SCAN_COMPLETED:
7260                 return "SCAN_COMPLETED";
7261         case SCAN_ABORTED:
7262                 return "SCAN_ABORTED";
7263         case SCHED_SCAN_STARTED:
7264                 return "SCHED_SCAN_STARTED";
7265         case SCHED_SCAN_STOPPED:
7266                 return "SCHED_SCAN_STOPPED";
7267         case SCHED_SCAN_RESULTS:
7268                 return "SCHED_SCAN_RESULTS";
7269         }
7270
7271         return "??";
7272 }
7273
7274
7275 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7276 {
7277         struct i802_bss *bss = priv;
7278         struct wpa_driver_nl80211_data *drv = bss->drv;
7279         int res;
7280         char *pos, *end;
7281
7282         pos = buf;
7283         end = buf + buflen;
7284
7285         res = os_snprintf(pos, end - pos,
7286                           "ifindex=%d\n"
7287                           "ifname=%s\n"
7288                           "brname=%s\n"
7289                           "addr=" MACSTR "\n"
7290                           "freq=%d\n"
7291                           "%s%s%s%s%s",
7292                           bss->ifindex,
7293                           bss->ifname,
7294                           bss->brname,
7295                           MAC2STR(bss->addr),
7296                           bss->freq,
7297                           bss->beacon_set ? "beacon_set=1\n" : "",
7298                           bss->added_if_into_bridge ?
7299                           "added_if_into_bridge=1\n" : "",
7300                           bss->added_bridge ? "added_bridge=1\n" : "",
7301                           bss->in_deinit ? "in_deinit=1\n" : "",
7302                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7303         if (os_snprintf_error(end - pos, res))
7304                 return pos - buf;
7305         pos += res;
7306
7307         if (bss->wdev_id_set) {
7308                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7309                                   (unsigned long long) bss->wdev_id);
7310                 if (os_snprintf_error(end - pos, res))
7311                         return pos - buf;
7312                 pos += res;
7313         }
7314
7315         res = os_snprintf(pos, end - pos,
7316                           "phyname=%s\n"
7317                           "perm_addr=" MACSTR "\n"
7318                           "drv_ifindex=%d\n"
7319                           "operstate=%d\n"
7320                           "scan_state=%s\n"
7321                           "auth_bssid=" MACSTR "\n"
7322                           "auth_attempt_bssid=" MACSTR "\n"
7323                           "bssid=" MACSTR "\n"
7324                           "prev_bssid=" MACSTR "\n"
7325                           "associated=%d\n"
7326                           "assoc_freq=%u\n"
7327                           "monitor_sock=%d\n"
7328                           "monitor_ifidx=%d\n"
7329                           "monitor_refcount=%d\n"
7330                           "last_mgmt_freq=%u\n"
7331                           "eapol_tx_sock=%d\n"
7332                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7333                           drv->phyname,
7334                           MAC2STR(drv->perm_addr),
7335                           drv->ifindex,
7336                           drv->operstate,
7337                           scan_state_str(drv->scan_state),
7338                           MAC2STR(drv->auth_bssid),
7339                           MAC2STR(drv->auth_attempt_bssid),
7340                           MAC2STR(drv->bssid),
7341                           MAC2STR(drv->prev_bssid),
7342                           drv->associated,
7343                           drv->assoc_freq,
7344                           drv->monitor_sock,
7345                           drv->monitor_ifidx,
7346                           drv->monitor_refcount,
7347                           drv->last_mgmt_freq,
7348                           drv->eapol_tx_sock,
7349                           drv->ignore_if_down_event ?
7350                           "ignore_if_down_event=1\n" : "",
7351                           drv->scan_complete_events ?
7352                           "scan_complete_events=1\n" : "",
7353                           drv->disabled_11b_rates ?
7354                           "disabled_11b_rates=1\n" : "",
7355                           drv->pending_remain_on_chan ?
7356                           "pending_remain_on_chan=1\n" : "",
7357                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7358                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7359                           drv->poll_command_supported ?
7360                           "poll_command_supported=1\n" : "",
7361                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7362                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7363                           drv->retry_auth ? "retry_auth=1\n" : "",
7364                           drv->use_monitor ? "use_monitor=1\n" : "",
7365                           drv->ignore_next_local_disconnect ?
7366                           "ignore_next_local_disconnect=1\n" : "",
7367                           drv->ignore_next_local_deauth ?
7368                           "ignore_next_local_deauth=1\n" : "");
7369         if (os_snprintf_error(end - pos, res))
7370                 return pos - buf;
7371         pos += res;
7372
7373         if (drv->has_capability) {
7374                 res = os_snprintf(pos, end - pos,
7375                                   "capa.key_mgmt=0x%x\n"
7376                                   "capa.enc=0x%x\n"
7377                                   "capa.auth=0x%x\n"
7378                                   "capa.flags=0x%llx\n"
7379                                   "capa.rrm_flags=0x%x\n"
7380                                   "capa.max_scan_ssids=%d\n"
7381                                   "capa.max_sched_scan_ssids=%d\n"
7382                                   "capa.sched_scan_supported=%d\n"
7383                                   "capa.max_match_sets=%d\n"
7384                                   "capa.max_remain_on_chan=%u\n"
7385                                   "capa.max_stations=%u\n"
7386                                   "capa.probe_resp_offloads=0x%x\n"
7387                                   "capa.max_acl_mac_addrs=%u\n"
7388                                   "capa.num_multichan_concurrent=%u\n"
7389                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7390                                   "capa.mac_addr_rand_scan_supported=%d\n",
7391                                   drv->capa.key_mgmt,
7392                                   drv->capa.enc,
7393                                   drv->capa.auth,
7394                                   (unsigned long long) drv->capa.flags,
7395                                   drv->capa.rrm_flags,
7396                                   drv->capa.max_scan_ssids,
7397                                   drv->capa.max_sched_scan_ssids,
7398                                   drv->capa.sched_scan_supported,
7399                                   drv->capa.max_match_sets,
7400                                   drv->capa.max_remain_on_chan,
7401                                   drv->capa.max_stations,
7402                                   drv->capa.probe_resp_offloads,
7403                                   drv->capa.max_acl_mac_addrs,
7404                                   drv->capa.num_multichan_concurrent,
7405                                   drv->capa.mac_addr_rand_sched_scan_supported,
7406                                   drv->capa.mac_addr_rand_scan_supported);
7407                 if (os_snprintf_error(end - pos, res))
7408                         return pos - buf;
7409                 pos += res;
7410         }
7411
7412         return pos - buf;
7413 }
7414
7415
7416 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7417 {
7418         if ((settings->head &&
7419              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7420                      settings->head_len, settings->head)) ||
7421             (settings->tail &&
7422              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7423                      settings->tail_len, settings->tail)) ||
7424             (settings->beacon_ies &&
7425              nla_put(msg, NL80211_ATTR_IE,
7426                      settings->beacon_ies_len, settings->beacon_ies)) ||
7427             (settings->proberesp_ies &&
7428              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7429                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7430             (settings->assocresp_ies &&
7431              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7432                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7433             (settings->probe_resp &&
7434              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7435                      settings->probe_resp_len, settings->probe_resp)))
7436                 return -ENOBUFS;
7437
7438         return 0;
7439 }
7440
7441
7442 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7443 {
7444         struct nl_msg *msg;
7445         struct i802_bss *bss = priv;
7446         struct wpa_driver_nl80211_data *drv = bss->drv;
7447         struct nlattr *beacon_csa;
7448         int ret = -ENOBUFS;
7449
7450         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7451                    settings->cs_count, settings->block_tx,
7452                    settings->freq_params.freq, settings->freq_params.bandwidth,
7453                    settings->freq_params.center_freq1,
7454                    settings->freq_params.center_freq2);
7455
7456         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7457                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7458                 return -EOPNOTSUPP;
7459         }
7460
7461         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7462             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7463                 return -EOPNOTSUPP;
7464
7465         /* check settings validity */
7466         if (!settings->beacon_csa.tail ||
7467             ((settings->beacon_csa.tail_len <=
7468               settings->counter_offset_beacon) ||
7469              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7470               settings->cs_count)))
7471                 return -EINVAL;
7472
7473         if (settings->beacon_csa.probe_resp &&
7474             ((settings->beacon_csa.probe_resp_len <=
7475               settings->counter_offset_presp) ||
7476              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7477               settings->cs_count)))
7478                 return -EINVAL;
7479
7480         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7481             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7482                         settings->cs_count) ||
7483             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7484             (settings->block_tx &&
7485              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7486                 goto error;
7487
7488         /* beacon_after params */
7489         ret = set_beacon_data(msg, &settings->beacon_after);
7490         if (ret)
7491                 goto error;
7492
7493         /* beacon_csa params */
7494         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7495         if (!beacon_csa)
7496                 goto fail;
7497
7498         ret = set_beacon_data(msg, &settings->beacon_csa);
7499         if (ret)
7500                 goto error;
7501
7502         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7503                         settings->counter_offset_beacon) ||
7504             (settings->beacon_csa.probe_resp &&
7505              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7506                          settings->counter_offset_presp)))
7507                 goto fail;
7508
7509         nla_nest_end(msg, beacon_csa);
7510         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7511         if (ret) {
7512                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7513                            ret, strerror(-ret));
7514         }
7515         return ret;
7516
7517 fail:
7518         ret = -ENOBUFS;
7519 error:
7520         nlmsg_free(msg);
7521         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7522         return ret;
7523 }
7524
7525
7526 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7527                           u8 user_priority, u16 admitted_time)
7528 {
7529         struct i802_bss *bss = priv;
7530         struct wpa_driver_nl80211_data *drv = bss->drv;
7531         struct nl_msg *msg;
7532         int ret;
7533
7534         wpa_printf(MSG_DEBUG,
7535                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7536                    tsid, admitted_time, user_priority);
7537
7538         if (!is_sta_interface(drv->nlmode))
7539                 return -ENOTSUP;
7540
7541         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7542         if (!msg ||
7543             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7544             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7545             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7546             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7547                 nlmsg_free(msg);
7548                 return -ENOBUFS;
7549         }
7550
7551         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7552         if (ret)
7553                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7554                            ret, strerror(-ret));
7555         return ret;
7556 }
7557
7558
7559 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7560 {
7561         struct i802_bss *bss = priv;
7562         struct wpa_driver_nl80211_data *drv = bss->drv;
7563         struct nl_msg *msg;
7564         int ret;
7565
7566         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7567
7568         if (!is_sta_interface(drv->nlmode))
7569                 return -ENOTSUP;
7570
7571         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7572             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7573             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7574                 nlmsg_free(msg);
7575                 return -ENOBUFS;
7576         }
7577
7578         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7579         if (ret)
7580                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7581                            ret, strerror(-ret));
7582         return ret;
7583 }
7584
7585
7586 #ifdef CONFIG_TESTING_OPTIONS
7587 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7588 {
7589         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7590         struct wpabuf *buf = arg;
7591
7592         if (!buf)
7593                 return NL_SKIP;
7594
7595         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7596                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7597                 return NL_SKIP;
7598         }
7599
7600         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7601                         genlmsg_attrlen(gnlh, 0));
7602
7603         return NL_SKIP;
7604 }
7605 #endif /* CONFIG_TESTING_OPTIONS */
7606
7607
7608 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7609 {
7610         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7611         struct nlattr *nl_vendor_reply, *nl;
7612         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7613         struct wpabuf *buf = arg;
7614         int rem;
7615
7616         if (!buf)
7617                 return NL_SKIP;
7618
7619         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7620                   genlmsg_attrlen(gnlh, 0), NULL);
7621         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7622
7623         if (!nl_vendor_reply)
7624                 return NL_SKIP;
7625
7626         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7627                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7628                 return NL_SKIP;
7629         }
7630
7631         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7632                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7633         }
7634
7635         return NL_SKIP;
7636 }
7637
7638
7639 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7640                               unsigned int subcmd, const u8 *data,
7641                               size_t data_len, struct wpabuf *buf)
7642 {
7643         struct i802_bss *bss = priv;
7644         struct wpa_driver_nl80211_data *drv = bss->drv;
7645         struct nl_msg *msg;
7646         int ret;
7647
7648 #ifdef CONFIG_TESTING_OPTIONS
7649         if (vendor_id == 0xffffffff) {
7650                 msg = nlmsg_alloc();
7651                 if (!msg)
7652                         return -ENOMEM;
7653
7654                 nl80211_cmd(drv, msg, 0, subcmd);
7655                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7656                     0)
7657                         goto fail;
7658                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7659                 if (ret)
7660                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7661                                    ret);
7662                 return ret;
7663         }
7664 #endif /* CONFIG_TESTING_OPTIONS */
7665
7666         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7667             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7668             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7669             (data &&
7670              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7671                 goto fail;
7672
7673         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7674         if (ret)
7675                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7676                            ret);
7677         return ret;
7678
7679 fail:
7680         nlmsg_free(msg);
7681         return -ENOBUFS;
7682 }
7683
7684
7685 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7686                                u8 qos_map_set_len)
7687 {
7688         struct i802_bss *bss = priv;
7689         struct wpa_driver_nl80211_data *drv = bss->drv;
7690         struct nl_msg *msg;
7691         int ret;
7692
7693         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7694                     qos_map_set, qos_map_set_len);
7695
7696         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7697             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7698                 nlmsg_free(msg);
7699                 return -ENOBUFS;
7700         }
7701
7702         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7703         if (ret)
7704                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7705
7706         return ret;
7707 }
7708
7709
7710 static int nl80211_set_wowlan(void *priv,
7711                               const struct wowlan_triggers *triggers)
7712 {
7713         struct i802_bss *bss = priv;
7714         struct wpa_driver_nl80211_data *drv = bss->drv;
7715         struct nl_msg *msg;
7716         struct nlattr *wowlan_triggers;
7717         int ret;
7718
7719         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7720
7721         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
7722             !(wowlan_triggers = nla_nest_start(msg,
7723                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7724             (triggers->any &&
7725              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7726             (triggers->disconnect &&
7727              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7728             (triggers->magic_pkt &&
7729              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7730             (triggers->gtk_rekey_failure &&
7731              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7732             (triggers->eap_identity_req &&
7733              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7734             (triggers->four_way_handshake &&
7735              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7736             (triggers->rfkill_release &&
7737              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7738                 nlmsg_free(msg);
7739                 return -ENOBUFS;
7740         }
7741
7742         nla_nest_end(msg, wowlan_triggers);
7743
7744         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7745         if (ret)
7746                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7747
7748         return ret;
7749 }
7750
7751
7752 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7753 {
7754         struct i802_bss *bss = priv;
7755         struct wpa_driver_nl80211_data *drv = bss->drv;
7756         struct nl_msg *msg;
7757         struct nlattr *params;
7758
7759         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7760
7761         if (!drv->roaming_vendor_cmd_avail) {
7762                 wpa_printf(MSG_DEBUG,
7763                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7764                 return -1;
7765         }
7766
7767         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7768             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7769             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7770                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7771             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7772             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7773                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7774                         QCA_ROAMING_NOT_ALLOWED) ||
7775             (bssid &&
7776              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7777                 nlmsg_free(msg);
7778                 return -1;
7779         }
7780         nla_nest_end(msg, params);
7781
7782         return send_and_recv_msgs(drv, msg, NULL, NULL);
7783 }
7784
7785
7786 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7787 {
7788         struct i802_bss *bss = priv;
7789         struct wpa_driver_nl80211_data *drv = bss->drv;
7790         int new_addr = addr != NULL;
7791
7792         if (!addr)
7793                 addr = drv->perm_addr;
7794
7795         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7796                 return -1;
7797
7798         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7799         {
7800                 wpa_printf(MSG_DEBUG,
7801                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7802                            bss->ifname, MAC2STR(addr));
7803                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7804                                           1) < 0) {
7805                         wpa_printf(MSG_DEBUG,
7806                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7807                 }
7808                 return -1;
7809         }
7810
7811         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7812                    bss->ifname, MAC2STR(addr));
7813         drv->addr_changed = new_addr;
7814         os_memcpy(bss->addr, addr, ETH_ALEN);
7815
7816         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7817         {
7818                 wpa_printf(MSG_DEBUG,
7819                            "nl80211: Could not restore interface UP after set_mac_addr");
7820         }
7821
7822         return 0;
7823 }
7824
7825
7826 #ifdef CONFIG_MESH
7827
7828 static int wpa_driver_nl80211_init_mesh(void *priv)
7829 {
7830         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7831                 wpa_printf(MSG_INFO,
7832                            "nl80211: Failed to set interface into mesh mode");
7833                 return -1;
7834         }
7835         return 0;
7836 }
7837
7838
7839 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
7840                                size_t mesh_id_len)
7841 {
7842         if (mesh_id) {
7843                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
7844                                   mesh_id, mesh_id_len);
7845                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
7846         }
7847
7848         return 0;
7849 }
7850
7851
7852 static int
7853 wpa_driver_nl80211_join_mesh(void *priv,
7854                              struct wpa_driver_mesh_join_params *params)
7855 {
7856         struct i802_bss *bss = priv;
7857         struct wpa_driver_nl80211_data *drv = bss->drv;
7858         struct nl_msg *msg;
7859         struct nlattr *container;
7860         int ret = -1;
7861         u32 timeout;
7862
7863         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7864         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7865         if (!msg ||
7866             nl80211_put_freq_params(msg, &params->freq) ||
7867             nl80211_put_basic_rates(msg, params->basic_rates) ||
7868             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
7869             nl80211_put_beacon_int(msg, params->beacon_int))
7870                 goto fail;
7871
7872         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7873
7874         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7875         if (!container)
7876                 goto fail;
7877
7878         if (params->ies) {
7879                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7880                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7881                             params->ies))
7882                         goto fail;
7883         }
7884         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
7885         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
7886                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
7887                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
7888                         goto fail;
7889         }
7890         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
7891             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
7892                 goto fail;
7893         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
7894             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
7895                 goto fail;
7896         nla_nest_end(msg, container);
7897
7898         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
7899         if (!container)
7900                 goto fail;
7901
7902         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
7903             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
7904                 goto fail;
7905         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
7906             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7907                         params->max_peer_links))
7908                 goto fail;
7909
7910         /*
7911          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
7912          * the timer could disconnect stations even in that case.
7913          *
7914          * Set 0xffffffff instead of 0 because NL80211_MESHCONF_PLINK_TIMEOUT
7915          * does not allow 0.
7916          */
7917         timeout = params->conf.peer_link_timeout;
7918         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) || timeout == 0)
7919                 timeout = 0xffffffff;
7920         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, timeout)) {
7921                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
7922                 goto fail;
7923         }
7924
7925         nla_nest_end(msg, container);
7926
7927         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7928         msg = NULL;
7929         if (ret) {
7930                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
7931                            ret, strerror(-ret));
7932                 goto fail;
7933         }
7934         ret = 0;
7935         bss->freq = params->freq.freq;
7936         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
7937
7938 fail:
7939         nlmsg_free(msg);
7940         return ret;
7941 }
7942
7943
7944 static int wpa_driver_nl80211_leave_mesh(void *priv)
7945 {
7946         struct i802_bss *bss = priv;
7947         struct wpa_driver_nl80211_data *drv = bss->drv;
7948         struct nl_msg *msg;
7949         int ret;
7950
7951         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
7952         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
7953         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7954         if (ret) {
7955                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
7956                            ret, strerror(-ret));
7957         } else {
7958                 wpa_printf(MSG_DEBUG,
7959                            "nl80211: mesh leave request send successfully");
7960         }
7961
7962         if (wpa_driver_nl80211_set_mode(drv->first_bss,
7963                                         NL80211_IFTYPE_STATION)) {
7964                 wpa_printf(MSG_INFO,
7965                            "nl80211: Failed to set interface into station mode");
7966         }
7967         return ret;
7968 }
7969
7970 #endif /* CONFIG_MESH */
7971
7972
7973 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
7974                                       const u8 *ipaddr, int prefixlen,
7975                                       const u8 *addr)
7976 {
7977 #ifdef CONFIG_LIBNL3_ROUTE
7978         struct i802_bss *bss = priv;
7979         struct wpa_driver_nl80211_data *drv = bss->drv;
7980         struct rtnl_neigh *rn;
7981         struct nl_addr *nl_ipaddr = NULL;
7982         struct nl_addr *nl_lladdr = NULL;
7983         int family, addrsize;
7984         int res;
7985
7986         if (!ipaddr || prefixlen == 0 || !addr)
7987                 return -EINVAL;
7988
7989         if (bss->br_ifindex == 0) {
7990                 wpa_printf(MSG_DEBUG,
7991                            "nl80211: bridge must be set before adding an ip neigh to it");
7992                 return -1;
7993         }
7994
7995         if (!drv->rtnl_sk) {
7996                 wpa_printf(MSG_DEBUG,
7997                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
7998                 return -1;
7999         }
8000
8001         if (version == 4) {
8002                 family = AF_INET;
8003                 addrsize = 4;
8004         } else if (version == 6) {
8005                 family = AF_INET6;
8006                 addrsize = 16;
8007         } else {
8008                 return -EINVAL;
8009         }
8010
8011         rn = rtnl_neigh_alloc();
8012         if (rn == NULL)
8013                 return -ENOMEM;
8014
8015         /* set the destination ip address for neigh */
8016         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8017         if (nl_ipaddr == NULL) {
8018                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8019                 res = -ENOMEM;
8020                 goto errout;
8021         }
8022         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8023         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8024         if (res) {
8025                 wpa_printf(MSG_DEBUG,
8026                            "nl80211: neigh set destination addr failed");
8027                 goto errout;
8028         }
8029
8030         /* set the corresponding lladdr for neigh */
8031         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8032         if (nl_lladdr == NULL) {
8033                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8034                 res = -ENOMEM;
8035                 goto errout;
8036         }
8037         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8038
8039         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8040         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8041
8042         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8043         if (res) {
8044                 wpa_printf(MSG_DEBUG,
8045                            "nl80211: Adding bridge ip neigh failed: %s",
8046                            strerror(errno));
8047         }
8048 errout:
8049         if (nl_lladdr)
8050                 nl_addr_put(nl_lladdr);
8051         if (nl_ipaddr)
8052                 nl_addr_put(nl_ipaddr);
8053         if (rn)
8054                 rtnl_neigh_put(rn);
8055         return res;
8056 #else /* CONFIG_LIBNL3_ROUTE */
8057         return -1;
8058 #endif /* CONFIG_LIBNL3_ROUTE */
8059 }
8060
8061
8062 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8063                                          const u8 *ipaddr)
8064 {
8065 #ifdef CONFIG_LIBNL3_ROUTE
8066         struct i802_bss *bss = priv;
8067         struct wpa_driver_nl80211_data *drv = bss->drv;
8068         struct rtnl_neigh *rn;
8069         struct nl_addr *nl_ipaddr;
8070         int family, addrsize;
8071         int res;
8072
8073         if (!ipaddr)
8074                 return -EINVAL;
8075
8076         if (version == 4) {
8077                 family = AF_INET;
8078                 addrsize = 4;
8079         } else if (version == 6) {
8080                 family = AF_INET6;
8081                 addrsize = 16;
8082         } else {
8083                 return -EINVAL;
8084         }
8085
8086         if (bss->br_ifindex == 0) {
8087                 wpa_printf(MSG_DEBUG,
8088                            "nl80211: bridge must be set to delete an ip neigh");
8089                 return -1;
8090         }
8091
8092         if (!drv->rtnl_sk) {
8093                 wpa_printf(MSG_DEBUG,
8094                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8095                 return -1;
8096         }
8097
8098         rn = rtnl_neigh_alloc();
8099         if (rn == NULL)
8100                 return -ENOMEM;
8101
8102         /* set the destination ip address for neigh */
8103         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8104         if (nl_ipaddr == NULL) {
8105                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8106                 res = -ENOMEM;
8107                 goto errout;
8108         }
8109         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8110         if (res) {
8111                 wpa_printf(MSG_DEBUG,
8112                            "nl80211: neigh set destination addr failed");
8113                 goto errout;
8114         }
8115
8116         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8117
8118         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8119         if (res) {
8120                 wpa_printf(MSG_DEBUG,
8121                            "nl80211: Deleting bridge ip neigh failed: %s",
8122                            strerror(errno));
8123         }
8124 errout:
8125         if (nl_ipaddr)
8126                 nl_addr_put(nl_ipaddr);
8127         if (rn)
8128                 rtnl_neigh_put(rn);
8129         return res;
8130 #else /* CONFIG_LIBNL3_ROUTE */
8131         return -1;
8132 #endif /* CONFIG_LIBNL3_ROUTE */
8133 }
8134
8135
8136 static int linux_write_system_file(const char *path, unsigned int val)
8137 {
8138         char buf[50];
8139         int fd, len;
8140
8141         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8142         if (os_snprintf_error(sizeof(buf), len))
8143                 return -1;
8144
8145         fd = open(path, O_WRONLY);
8146         if (fd < 0)
8147                 return -1;
8148
8149         if (write(fd, buf, len) < 0) {
8150                 wpa_printf(MSG_DEBUG,
8151                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8152                            path, val);
8153                 close(fd);
8154                 return -1;
8155         }
8156         close(fd);
8157
8158         return 0;
8159 }
8160
8161
8162 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8163 {
8164         switch (attr) {
8165         case DRV_BR_PORT_ATTR_PROXYARP:
8166                 return "proxyarp";
8167         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8168                 return "hairpin_mode";
8169         }
8170
8171         return NULL;
8172 }
8173
8174
8175 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8176                                        unsigned int val)
8177 {
8178         struct i802_bss *bss = priv;
8179         char path[128];
8180         const char *attr_txt;
8181
8182         attr_txt = drv_br_port_attr_str(attr);
8183         if (attr_txt == NULL)
8184                 return -EINVAL;
8185
8186         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8187                     bss->ifname, attr_txt);
8188
8189         if (linux_write_system_file(path, val))
8190                 return -1;
8191
8192         return 0;
8193 }
8194
8195
8196 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8197 {
8198         switch (param) {
8199         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8200                 return "arp_accept";
8201         }
8202
8203         return NULL;
8204 }
8205
8206
8207 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8208                                        unsigned int val)
8209 {
8210         struct i802_bss *bss = priv;
8211         char path[128];
8212         const char *param_txt;
8213         int ip_version = 4;
8214
8215         param_txt = drv_br_net_param_str(param);
8216         if (param_txt == NULL)
8217                 return -EINVAL;
8218
8219         switch (param) {
8220                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8221                         ip_version = 4;
8222                         break;
8223                 default:
8224                         return -EINVAL;
8225         }
8226
8227         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8228                     ip_version, bss->brname, param_txt);
8229
8230         if (linux_write_system_file(path, val))
8231                 return -1;
8232
8233         return 0;
8234 }
8235
8236
8237 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8238 {
8239         switch (hw_mode) {
8240         case HOSTAPD_MODE_IEEE80211B:
8241                 return QCA_ACS_MODE_IEEE80211B;
8242         case HOSTAPD_MODE_IEEE80211G:
8243                 return QCA_ACS_MODE_IEEE80211G;
8244         case HOSTAPD_MODE_IEEE80211A:
8245                 return QCA_ACS_MODE_IEEE80211A;
8246         case HOSTAPD_MODE_IEEE80211AD:
8247                 return QCA_ACS_MODE_IEEE80211AD;
8248         default:
8249                 return -1;
8250         }
8251 }
8252
8253
8254 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8255 {
8256         struct i802_bss *bss = priv;
8257         struct wpa_driver_nl80211_data *drv = bss->drv;
8258         struct nl_msg *msg;
8259         struct nlattr *data;
8260         int ret;
8261         int mode;
8262
8263         mode = hw_mode_to_qca_acs(params->hw_mode);
8264         if (mode < 0)
8265                 return -1;
8266
8267         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8268             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8269             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8270                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8271             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8272             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8273             (params->ht_enabled &&
8274              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8275             (params->ht40_enabled &&
8276              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
8277                 nlmsg_free(msg);
8278                 return -ENOBUFS;
8279         }
8280         nla_nest_end(msg, data);
8281
8282         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8283         if (ret) {
8284                 wpa_printf(MSG_DEBUG,
8285                            "nl80211: Failed to invoke driver ACS function: %s",
8286                            strerror(errno));
8287         }
8288         return ret;
8289 }
8290
8291
8292 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8293         .name = "nl80211",
8294         .desc = "Linux nl80211/cfg80211",
8295         .get_bssid = wpa_driver_nl80211_get_bssid,
8296         .get_ssid = wpa_driver_nl80211_get_ssid,
8297         .set_key = driver_nl80211_set_key,
8298         .scan2 = driver_nl80211_scan2,
8299         .sched_scan = wpa_driver_nl80211_sched_scan,
8300         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8301         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8302         .deauthenticate = driver_nl80211_deauthenticate,
8303         .authenticate = driver_nl80211_authenticate,
8304         .associate = wpa_driver_nl80211_associate,
8305         .global_init = nl80211_global_init,
8306         .global_deinit = nl80211_global_deinit,
8307         .init2 = wpa_driver_nl80211_init,
8308         .deinit = driver_nl80211_deinit,
8309         .get_capa = wpa_driver_nl80211_get_capa,
8310         .set_operstate = wpa_driver_nl80211_set_operstate,
8311         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8312         .set_country = wpa_driver_nl80211_set_country,
8313         .get_country = wpa_driver_nl80211_get_country,
8314         .set_ap = wpa_driver_nl80211_set_ap,
8315         .set_acl = wpa_driver_nl80211_set_acl,
8316         .if_add = wpa_driver_nl80211_if_add,
8317         .if_remove = driver_nl80211_if_remove,
8318         .send_mlme = driver_nl80211_send_mlme,
8319         .get_hw_feature_data = nl80211_get_hw_feature_data,
8320         .sta_add = wpa_driver_nl80211_sta_add,
8321         .sta_remove = driver_nl80211_sta_remove,
8322         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8323         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8324         .hapd_init = i802_init,
8325         .hapd_deinit = i802_deinit,
8326         .set_wds_sta = i802_set_wds_sta,
8327         .get_seqnum = i802_get_seqnum,
8328         .flush = i802_flush,
8329         .get_inact_sec = i802_get_inact_sec,
8330         .sta_clear_stats = i802_sta_clear_stats,
8331         .set_rts = i802_set_rts,
8332         .set_frag = i802_set_frag,
8333         .set_tx_queue_params = i802_set_tx_queue_params,
8334         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8335         .sta_deauth = i802_sta_deauth,
8336         .sta_disassoc = i802_sta_disassoc,
8337         .read_sta_data = driver_nl80211_read_sta_data,
8338         .set_freq = i802_set_freq,
8339         .send_action = driver_nl80211_send_action,
8340         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8341         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8342         .cancel_remain_on_channel =
8343         wpa_driver_nl80211_cancel_remain_on_channel,
8344         .probe_req_report = driver_nl80211_probe_req_report,
8345         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8346         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8347         .resume = wpa_driver_nl80211_resume,
8348         .signal_monitor = nl80211_signal_monitor,
8349         .signal_poll = nl80211_signal_poll,
8350         .send_frame = nl80211_send_frame,
8351         .shared_freq = wpa_driver_nl80211_shared_freq,
8352         .set_param = nl80211_set_param,
8353         .get_radio_name = nl80211_get_radio_name,
8354         .add_pmkid = nl80211_add_pmkid,
8355         .remove_pmkid = nl80211_remove_pmkid,
8356         .flush_pmkid = nl80211_flush_pmkid,
8357         .set_rekey_info = nl80211_set_rekey_info,
8358         .poll_client = nl80211_poll_client,
8359         .set_p2p_powersave = nl80211_set_p2p_powersave,
8360         .start_dfs_cac = nl80211_start_radar_detection,
8361         .stop_ap = wpa_driver_nl80211_stop_ap,
8362 #ifdef CONFIG_TDLS
8363         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8364         .tdls_oper = nl80211_tdls_oper,
8365         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8366         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8367 #endif /* CONFIG_TDLS */
8368         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8369         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8370         .get_survey = wpa_driver_nl80211_get_survey,
8371         .status = wpa_driver_nl80211_status,
8372         .switch_channel = nl80211_switch_channel,
8373 #ifdef ANDROID_P2P
8374         .set_noa = wpa_driver_set_p2p_noa,
8375         .get_noa = wpa_driver_get_p2p_noa,
8376         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8377 #endif /* ANDROID_P2P */
8378 #ifdef ANDROID
8379         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8380 #endif /* ANDROID */
8381         .vendor_cmd = nl80211_vendor_cmd,
8382         .set_qos_map = nl80211_set_qos_map,
8383         .set_wowlan = nl80211_set_wowlan,
8384         .roaming = nl80211_roaming,
8385         .set_mac_addr = nl80211_set_mac_addr,
8386 #ifdef CONFIG_MESH
8387         .init_mesh = wpa_driver_nl80211_init_mesh,
8388         .join_mesh = wpa_driver_nl80211_join_mesh,
8389         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8390 #endif /* CONFIG_MESH */
8391         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8392         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8393         .br_port_set_attr = wpa_driver_br_port_set_attr,
8394         .br_set_net_param = wpa_driver_br_set_net_param,
8395         .add_tx_ts = nl80211_add_ts,
8396         .del_tx_ts = nl80211_del_ts,
8397         .do_acs = wpa_driver_do_acs,
8398 };