src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This software may be distributed under the terms of the BSD license.
  10  * See README for more details.
  11  */
  12
  13 #include "includes.h"
  14 #include <sys/types.h>
  15 #include <fcntl.h>
  16 #include <net/if.h>
  17 #include <netlink/genl/genl.h>
  18 #include <netlink/genl/ctrl.h>
  19 #ifdef CONFIG_LIBNL3_ROUTE
  20 #include <netlink/route/neighbour.h>
  21 #endif /* CONFIG_LIBNL3_ROUTE */
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/errqueue.h>
  25
  26 #include "common.h"
  27 #include "eloop.h"
  28 #include "common/qca-vendor.h"
  29 #include "common/qca-vendor-attr.h"
  30 #include "common/ieee802_11_defs.h"
  31 #include "common/ieee802_11_common.h"
  32 #include "l2_packet/l2_packet.h"
  33 #include "netlink.h"
  34 #include "linux_defines.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver_nl80211.h"
  40
  41
  42 #ifndef CONFIG_LIBNL20
  43 /*
  44  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  45  * but when you free a socket again it will mess up its bitmap and
  46  * and use the wrong number the next time it needs a socket ID.
  47  * Therefore, we wrap the handle alloc/destroy and add our own pid
  48  * accounting.
  49  */
  50 static uint32_t port_bitmap[32] = { 0 };
  51
  52 static struct nl_handle *nl80211_handle_alloc(void *cb)
  53 {
  54         struct nl_handle *handle;
  55         uint32_t pid = getpid() & 0x3FFFFF;
  56         int i;
  57
  58         handle = nl_handle_alloc_cb(cb);
  59
  60         for (i = 0; i < 1024; i++) {
  61                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  62                         continue;
  63                 port_bitmap[i / 32] |= 1 << (i % 32);
  64                 pid += i << 22;
  65                 break;
  66         }
  67
  68         nl_socket_set_local_port(handle, pid);
  69
  70         return handle;
  71 }
  72
  73 static void nl80211_handle_destroy(struct nl_handle *handle)
  74 {
  75         uint32_t port = nl_socket_get_local_port(handle);
  76
  77         port >>= 22;
  78         port_bitmap[port / 32] &= ~(1 << (port % 32));
  79
  80         nl_handle_destroy(handle);
  81 }
  82 #endif /* CONFIG_LIBNL20 */
  83
  84
  85 #ifdef ANDROID
  86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
  87 #undef nl_socket_set_nonblocking
  88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
  89
  90 #define genl_ctrl_resolve android_genl_ctrl_resolve
  91 #endif /* ANDROID */
  92
  93
  94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  95 {
  96         struct nl_handle *handle;
  97
  98         handle = nl80211_handle_alloc(cb);
  99         if (handle == NULL) {
 100                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 101                            "callbacks (%s)", dbg);
 102                 return NULL;
 103         }
 104
 105         if (genl_connect(handle)) {
 106                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 107                            "netlink (%s)", dbg);
 108                 nl80211_handle_destroy(handle);
 109                 return NULL;
 110         }
 111
 112         return handle;
 113 }
 114
 115
 116 static void nl_destroy_handles(struct nl_handle **handle)
 117 {
 118         if (*handle == NULL)
 119                 return;
 120         nl80211_handle_destroy(*handle);
 121         *handle = NULL;
 122 }
 123
 124
 125 #if __WORDSIZE == 64
 126 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 127 #else
 128 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 129 #endif
 130
 131 static void nl80211_register_eloop_read(struct nl_handle **handle,
 132                                         eloop_sock_handler handler,
 133                                         void *eloop_data)
 134 {
 135 #ifdef CONFIG_LIBNL20
 136         /*
 137          * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
 138          * by default. It is possible to hit that limit in some cases where
 139          * operations are blocked, e.g., with a burst of Deauthentication frames
 140          * to hostapd and STA entry deletion. Try to increase the buffer to make
 141          * this less likely to occur.
 142          */
 143         if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
 144                 wpa_printf(MSG_DEBUG,
 145                            "nl80211: Could not set nl_socket RX buffer size: %s",
 146                            strerror(errno));
 147                 /* continue anyway with the default (smaller) buffer */
 148         }
 149 #endif /* CONFIG_LIBNL20 */
 150
 151         nl_socket_set_nonblocking(*handle);
 152         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 153                                  eloop_data, *handle);
 154         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 155 }
 156
 157
 158 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 159 {
 160         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 161         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 162         nl_destroy_handles(handle);
 163 }
 164
 165
 166 static void nl80211_global_deinit(void *priv);
 167
 168 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 169 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 170                                             struct hostapd_freq_params *freq);
 171
 172 static int
 173 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 174                                    const u8 *set_addr, int first,
 175                                    const char *driver_params);
 176 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 177                                   unsigned int freq, unsigned int wait,
 178                                   const u8 *buf, size_t buf_len, u64 *cookie,
 179                                   int no_cck, int no_ack, int offchanok);
 180 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 181                                                int report);
 182
 183 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 184 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 185 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 186
 187 static int nl80211_set_channel(struct i802_bss *bss,
 188                                struct hostapd_freq_params *freq, int set_chan);
 189 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 190                                      int ifindex, int disabled);
 191
 192 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 193                               int reset_mode);
 194
 195 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 196 static int nl80211_set_param(void *priv, const char *param);
 197
 198
 199 /* Converts nl80211_chan_width to a common format */
 200 enum chan_width convert2width(int width)
 201 {
 202         switch (width) {
 203         case NL80211_CHAN_WIDTH_20_NOHT:
 204                 return CHAN_WIDTH_20_NOHT;
 205         case NL80211_CHAN_WIDTH_20:
 206                 return CHAN_WIDTH_20;
 207         case NL80211_CHAN_WIDTH_40:
 208                 return CHAN_WIDTH_40;
 209         case NL80211_CHAN_WIDTH_80:
 210                 return CHAN_WIDTH_80;
 211         case NL80211_CHAN_WIDTH_80P80:
 212                 return CHAN_WIDTH_80P80;
 213         case NL80211_CHAN_WIDTH_160:
 214                 return CHAN_WIDTH_160;
 215         }
 216         return CHAN_WIDTH_UNKNOWN;
 217 }
 218
 219
 220 int is_ap_interface(enum nl80211_iftype nlmode)
 221 {
 222         return nlmode == NL80211_IFTYPE_AP ||
 223                 nlmode == NL80211_IFTYPE_P2P_GO;
 224 }
 225
 226
 227 int is_sta_interface(enum nl80211_iftype nlmode)
 228 {
 229         return nlmode == NL80211_IFTYPE_STATION ||
 230                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 231 }
 232
 233
 234 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 235 {
 236         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 237                 nlmode == NL80211_IFTYPE_P2P_GO;
 238 }
 239
 240
 241 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 242                                   int ifindex)
 243 {
 244         struct i802_bss *bss;
 245
 246         for (bss = drv->first_bss; bss; bss = bss->next) {
 247                 if (bss->ifindex == ifindex)
 248                         return bss;
 249         }
 250
 251         return NULL;
 252 }
 253
 254
 255 static int is_mesh_interface(enum nl80211_iftype nlmode)
 256 {
 257         return nlmode == NL80211_IFTYPE_MESH_POINT;
 258 }
 259
 260
 261 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 262 {
 263         if (drv->associated)
 264                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 265         drv->associated = 0;
 266         os_memset(drv->bssid, 0, ETH_ALEN);
 267 }
 268
 269
 270 /* nl80211 code */
 271 static int ack_handler(struct nl_msg *msg, void *arg)
 272 {
 273         int *err = arg;
 274         *err = 0;
 275         return NL_STOP;
 276 }
 277
 278 static int finish_handler(struct nl_msg *msg, void *arg)
 279 {
 280         int *ret = arg;
 281         *ret = 0;
 282         return NL_SKIP;
 283 }
 284
 285 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 286                          void *arg)
 287 {
 288         int *ret = arg;
 289         *ret = err->error;
 290         return NL_SKIP;
 291 }
 292
 293
 294 static int no_seq_check(struct nl_msg *msg, void *arg)
 295 {
 296         return NL_OK;
 297 }
 298
 299
 300 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 301 {
 302         /*
 303          * Clear nlmsg data, e.g., to make sure key material is not left in
 304          * heap memory for unnecessarily long time.
 305          */
 306         if (msg) {
 307                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 308                 void *data = nlmsg_data(hdr);
 309                 /*
 310                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 311                  * only libnl were to maintain a stable API.. Neither will work
 312                  * with all released versions, so just calculate the length
 313                  * here.
 314                  */
 315                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 316
 317                 os_memset(data, 0, len);
 318         }
 319 }
 320
 321
 322 static int send_and_recv(struct nl80211_global *global,
 323                          struct nl_handle *nl_handle, struct nl_msg *msg,
 324                          int (*valid_handler)(struct nl_msg *, void *),
 325                          void *valid_data)
 326 {
 327         struct nl_cb *cb;
 328         int err = -ENOMEM;
 329
 330         if (!msg)
 331                 return -ENOMEM;
 332
 333         cb = nl_cb_clone(global->nl_cb);
 334         if (!cb)
 335                 goto out;
 336
 337         err = nl_send_auto_complete(nl_handle, msg);
 338         if (err < 0)
 339                 goto out;
 340
 341         err = 1;
 342
 343         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 344         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 345         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 346
 347         if (valid_handler)
 348                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 349                           valid_handler, valid_data);
 350
 351         while (err > 0) {
 352                 int res = nl_recvmsgs(nl_handle, cb);
 353                 if (res < 0) {
 354                         wpa_printf(MSG_INFO,
 355                                    "nl80211: %s->nl_recvmsgs failed: %d",
 356                                    __func__, res);
 357                 }
 358         }
 359  out:
 360         nl_cb_put(cb);
 361         if (!valid_handler && valid_data == (void *) -1)
 362                 nl80211_nlmsg_clear(msg);
 363         nlmsg_free(msg);
 364         return err;
 365 }
 366
 367
 368 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 369                        struct nl_msg *msg,
 370                        int (*valid_handler)(struct nl_msg *, void *),
 371                        void *valid_data)
 372 {
 373         return send_and_recv(drv->global, drv->global->nl, msg,
 374                              valid_handler, valid_data);
 375 }
 376
 377
 378 struct family_data {
 379         const char *group;
 380         int id;
 381 };
 382
 383
 384 static int family_handler(struct nl_msg *msg, void *arg)
 385 {
 386         struct family_data *res = arg;
 387         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 388         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 389         struct nlattr *mcgrp;
 390         int i;
 391
 392         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 393                   genlmsg_attrlen(gnlh, 0), NULL);
 394         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 395                 return NL_SKIP;
 396
 397         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 398                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 399                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 400                           nla_len(mcgrp), NULL);
 401                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 402                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 403                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 404                                res->group,
 405                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 406                         continue;
 407                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 408                 break;
 409         };
 410
 411         return NL_SKIP;
 412 }
 413
 414
 415 static int nl_get_multicast_id(struct nl80211_global *global,
 416                                const char *family, const char *group)
 417 {
 418         struct nl_msg *msg;
 419         int ret;
 420         struct family_data res = { group, -ENOENT };
 421
 422         msg = nlmsg_alloc();
 423         if (!msg)
 424                 return -ENOMEM;
 425         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 426                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 427             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 428                 nlmsg_free(msg);
 429                 return -1;
 430         }
 431
 432         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 433         if (ret == 0)
 434                 ret = res.id;
 435         return ret;
 436 }
 437
 438
 439 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 440                    struct nl_msg *msg, int flags, uint8_t cmd)
 441 {
 442         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 443                            0, flags, cmd, 0);
 444 }
 445
 446
 447 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 448 {
 449         if (bss->wdev_id_set)
 450                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 451         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 452 }
 453
 454
 455 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 456 {
 457         struct nl_msg *msg;
 458
 459         msg = nlmsg_alloc();
 460         if (!msg)
 461                 return NULL;
 462
 463         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 464             nl80211_set_iface_id(msg, bss) < 0) {
 465                 nlmsg_free(msg);
 466                 return NULL;
 467         }
 468
 469         return msg;
 470 }
 471
 472
 473 static struct nl_msg *
 474 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 475                     int flags, uint8_t cmd)
 476 {
 477         struct nl_msg *msg;
 478
 479         msg = nlmsg_alloc();
 480         if (!msg)
 481                 return NULL;
 482
 483         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 484             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 485                 nlmsg_free(msg);
 486                 return NULL;
 487         }
 488
 489         return msg;
 490 }
 491
 492
 493 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 494                                 uint8_t cmd)
 495 {
 496         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 497 }
 498
 499
 500 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 501 {
 502         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 503 }
 504
 505
 506 struct wiphy_idx_data {
 507         int wiphy_idx;
 508         enum nl80211_iftype nlmode;
 509         u8 *macaddr;
 510 };
 511
 512
 513 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 514 {
 515         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 516         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 517         struct wiphy_idx_data *info = arg;
 518
 519         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 520                   genlmsg_attrlen(gnlh, 0), NULL);
 521
 522         if (tb[NL80211_ATTR_WIPHY])
 523                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 524
 525         if (tb[NL80211_ATTR_IFTYPE])
 526                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 527
 528         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 529                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 530                           ETH_ALEN);
 531
 532         return NL_SKIP;
 533 }
 534
 535
 536 int nl80211_get_wiphy_index(struct i802_bss *bss)
 537 {
 538         struct nl_msg *msg;
 539         struct wiphy_idx_data data = {
 540                 .wiphy_idx = -1,
 541                 .macaddr = NULL,
 542         };
 543
 544         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 545                 return -1;
 546
 547         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 548                 return data.wiphy_idx;
 549         return -1;
 550 }
 551
 552
 553 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 554 {
 555         struct nl_msg *msg;
 556         struct wiphy_idx_data data = {
 557                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 558                 .macaddr = NULL,
 559         };
 560
 561         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 562                 return NL80211_IFTYPE_UNSPECIFIED;
 563
 564         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 565                 return data.nlmode;
 566         return NL80211_IFTYPE_UNSPECIFIED;
 567 }
 568
 569
 570 static int nl80211_get_macaddr(struct i802_bss *bss)
 571 {
 572         struct nl_msg *msg;
 573         struct wiphy_idx_data data = {
 574                 .macaddr = bss->addr,
 575         };
 576
 577         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 578                 return -1;
 579
 580         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 581 }
 582
 583
 584 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 585                                     struct nl80211_wiphy_data *w)
 586 {
 587         struct nl_msg *msg;
 588         int ret;
 589
 590         msg = nlmsg_alloc();
 591         if (!msg)
 592                 return -1;
 593
 594         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 595             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 596                 nlmsg_free(msg);
 597                 return -1;
 598         }
 599
 600         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 601         if (ret) {
 602                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 603                            "failed: ret=%d (%s)",
 604                            ret, strerror(-ret));
 605         }
 606         return ret;
 607 }
 608
 609
 610 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 611 {
 612         struct nl80211_wiphy_data *w = eloop_ctx;
 613         int res;
 614
 615         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 616
 617         res = nl_recvmsgs(handle, w->nl_cb);
 618         if (res < 0) {
 619                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 620                            __func__, res);
 621         }
 622 }
 623
 624
 625 static int process_beacon_event(struct nl_msg *msg, void *arg)
 626 {
 627         struct nl80211_wiphy_data *w = arg;
 628         struct wpa_driver_nl80211_data *drv;
 629         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 630         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 631         union wpa_event_data event;
 632
 633         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 634                   genlmsg_attrlen(gnlh, 0), NULL);
 635
 636         if (gnlh->cmd != NL80211_CMD_FRAME) {
 637                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 638                            gnlh->cmd);
 639                 return NL_SKIP;
 640         }
 641
 642         if (!tb[NL80211_ATTR_FRAME])
 643                 return NL_SKIP;
 644
 645         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 646                          wiphy_list) {
 647                 os_memset(&event, 0, sizeof(event));
 648                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 649                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 650                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 651         }
 652
 653         return NL_SKIP;
 654 }
 655
 656
 657 static struct nl80211_wiphy_data *
 658 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 659 {
 660         static DEFINE_DL_LIST(nl80211_wiphys);
 661         struct nl80211_wiphy_data *w;
 662         int wiphy_idx, found = 0;
 663         struct i802_bss *tmp_bss;
 664
 665         if (bss->wiphy_data != NULL)
 666                 return bss->wiphy_data;
 667
 668         wiphy_idx = nl80211_get_wiphy_index(bss);
 669
 670         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 671                 if (w->wiphy_idx == wiphy_idx)
 672                         goto add;
 673         }
 674
 675         /* alloc new one */
 676         w = os_zalloc(sizeof(*w));
 677         if (w == NULL)
 678                 return NULL;
 679         w->wiphy_idx = wiphy_idx;
 680         dl_list_init(&w->bsss);
 681         dl_list_init(&w->drvs);
 682
 683         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 684         if (!w->nl_cb) {
 685                 os_free(w);
 686                 return NULL;
 687         }
 688         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 689         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 690                   w);
 691
 692         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 693                                          "wiphy beacons");
 694         if (w->nl_beacons == NULL) {
 695                 os_free(w);
 696                 return NULL;
 697         }
 698
 699         if (nl80211_register_beacons(bss->drv, w)) {
 700                 nl_destroy_handles(&w->nl_beacons);
 701                 os_free(w);
 702                 return NULL;
 703         }
 704
 705         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 706
 707         dl_list_add(&nl80211_wiphys, &w->list);
 708
 709 add:
 710         /* drv entry for this bss already there? */
 711         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 712                 if (tmp_bss->drv == bss->drv) {
 713                         found = 1;
 714                         break;
 715                 }
 716         }
 717         /* if not add it */
 718         if (!found)
 719                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 720
 721         dl_list_add(&w->bsss, &bss->wiphy_list);
 722         bss->wiphy_data = w;
 723         return w;
 724 }
 725
 726
 727 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 728 {
 729         struct nl80211_wiphy_data *w = bss->wiphy_data;
 730         struct i802_bss *tmp_bss;
 731         int found = 0;
 732
 733         if (w == NULL)
 734                 return;
 735         bss->wiphy_data = NULL;
 736         dl_list_del(&bss->wiphy_list);
 737
 738         /* still any for this drv present? */
 739         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 740                 if (tmp_bss->drv == bss->drv) {
 741                         found = 1;
 742                         break;
 743                 }
 744         }
 745         /* if not remove it */
 746         if (!found)
 747                 dl_list_del(&bss->drv->wiphy_list);
 748
 749         if (!dl_list_empty(&w->bsss))
 750                 return;
 751
 752         nl80211_destroy_eloop_handle(&w->nl_beacons);
 753
 754         nl_cb_put(w->nl_cb);
 755         dl_list_del(&w->list);
 756         os_free(w);
 757 }
 758
 759
 760 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 761 {
 762         struct i802_bss *bss = priv;
 763         struct wpa_driver_nl80211_data *drv = bss->drv;
 764         if (!drv->associated)
 765                 return -1;
 766         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 767         return 0;
 768 }
 769
 770
 771 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 772 {
 773         struct i802_bss *bss = priv;
 774         struct wpa_driver_nl80211_data *drv = bss->drv;
 775         if (!drv->associated)
 776                 return -1;
 777         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 778         return drv->ssid_len;
 779 }
 780
 781
 782 static void wpa_driver_nl80211_event_newlink(
 783         struct wpa_driver_nl80211_data *drv, const char *ifname)
 784 {
 785         union wpa_event_data event;
 786
 787         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 788                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 789                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 790                                    drv->first_bss->ifname);
 791                         return;
 792                 }
 793                 if (!drv->if_removed)
 794                         return;
 795                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 796                            drv->first_bss->ifname);
 797                 drv->if_removed = 0;
 798         }
 799
 800         os_memset(&event, 0, sizeof(event));
 801         os_strlcpy(event.interface_status.ifname, ifname,
 802                    sizeof(event.interface_status.ifname));
 803         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 804         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 805 }
 806
 807
 808 static void wpa_driver_nl80211_event_dellink(
 809         struct wpa_driver_nl80211_data *drv, const char *ifname)
 810 {
 811         union wpa_event_data event;
 812
 813         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 814                 if (drv->if_removed) {
 815                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 816                                    ifname);
 817                         return;
 818                 }
 819                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 820                            ifname);
 821                 drv->if_removed = 1;
 822         } else {
 823                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 824                            ifname);
 825         }
 826
 827         os_memset(&event, 0, sizeof(event));
 828         os_strlcpy(event.interface_status.ifname, ifname,
 829                    sizeof(event.interface_status.ifname));
 830         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 831         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 832 }
 833
 834
 835 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 836                                          u8 *buf, size_t len)
 837 {
 838         int attrlen, rta_len;
 839         struct rtattr *attr;
 840
 841         attrlen = len;
 842         attr = (struct rtattr *) buf;
 843
 844         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 845         while (RTA_OK(attr, attrlen)) {
 846                 if (attr->rta_type == IFLA_IFNAME) {
 847                         if (os_strcmp(((char *) attr) + rta_len,
 848                                       drv->first_bss->ifname) == 0)
 849                                 return 1;
 850                         else
 851                                 break;
 852                 }
 853                 attr = RTA_NEXT(attr, attrlen);
 854         }
 855
 856         return 0;
 857 }
 858
 859
 860 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 861                                           int ifindex, u8 *buf, size_t len)
 862 {
 863         if (drv->ifindex == ifindex)
 864                 return 1;
 865
 866         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 867                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 868                            "interface");
 869                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 870                 return 1;
 871         }
 872
 873         return 0;
 874 }
 875
 876
 877 static struct wpa_driver_nl80211_data *
 878 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 879 {
 880         struct wpa_driver_nl80211_data *drv;
 881         dl_list_for_each(drv, &global->interfaces,
 882                          struct wpa_driver_nl80211_data, list) {
 883                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 884                     have_ifidx(drv, idx))
 885                         return drv;
 886         }
 887         return NULL;
 888 }
 889
 890
 891 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 892                                                  struct ifinfomsg *ifi,
 893                                                  u8 *buf, size_t len)
 894 {
 895         struct nl80211_global *global = ctx;
 896         struct wpa_driver_nl80211_data *drv;
 897         int attrlen;
 898         struct rtattr *attr;
 899         u32 brid = 0;
 900         char namebuf[IFNAMSIZ];
 901         char ifname[IFNAMSIZ + 1];
 902         char extra[100], *pos, *end;
 903
 904         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 905         if (!drv) {
 906                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 907                            ifi->ifi_index);
 908                 return;
 909         }
 910
 911         extra[0] = '\0';
 912         pos = extra;
 913         end = pos + sizeof(extra);
 914         ifname[0] = '\0';
 915
 916         attrlen = len;
 917         attr = (struct rtattr *) buf;
 918         while (RTA_OK(attr, attrlen)) {
 919                 switch (attr->rta_type) {
 920                 case IFLA_IFNAME:
 921                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 922                                 break;
 923                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 924                         ifname[RTA_PAYLOAD(attr)] = '\0';
 925                         break;
 926                 case IFLA_MASTER:
 927                         brid = nla_get_u32((struct nlattr *) attr);
 928                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 929                         break;
 930                 case IFLA_WIRELESS:
 931                         pos += os_snprintf(pos, end - pos, " wext");
 932                         break;
 933                 case IFLA_OPERSTATE:
 934                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 935                                            nla_get_u32((struct nlattr *) attr));
 936                         break;
 937                 case IFLA_LINKMODE:
 938                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 939                                            nla_get_u32((struct nlattr *) attr));
 940                         break;
 941                 }
 942                 attr = RTA_NEXT(attr, attrlen);
 943         }
 944         extra[sizeof(extra) - 1] = '\0';
 945
 946         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 947                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 948                    ifi->ifi_flags,
 949                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 950                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 951                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 952                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 953
 954         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 955                 namebuf[0] = '\0';
 956                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 957                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) {
 958                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 959                                    "event since interface %s is up", namebuf);
 960                         drv->ignore_if_down_event = 0;
 961                         return;
 962                 }
 963                 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)",
 964                            namebuf, ifname);
 965                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 966                         wpa_printf(MSG_DEBUG,
 967                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 968                                    drv->first_bss->ifname);
 969                 } else if (drv->ignore_if_down_event) {
 970                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 971                                    "event generated by mode change");
 972                         drv->ignore_if_down_event = 0;
 973                 } else {
 974                         drv->if_disabled = 1;
 975                         wpa_supplicant_event(drv->ctx,
 976                                              EVENT_INTERFACE_DISABLED, NULL);
 977
 978                         /*
 979                          * Try to get drv again, since it may be removed as
 980                          * part of the EVENT_INTERFACE_DISABLED handling for
 981                          * dynamic interfaces
 982                          */
 983                         drv = nl80211_find_drv(global, ifi->ifi_index,
 984                                                buf, len);
 985                         if (!drv)
 986                                 return;
 987                 }
 988         }
 989
 990         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 991                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 992                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
 993                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 994                                    "event since interface %s is down",
 995                                    namebuf);
 996                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 998                                    "event since interface %s does not exist",
 999                                    drv->first_bss->ifname);
1000                 } else if (drv->if_removed) {
1001                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1002                                    "event since interface %s is marked "
1003                                    "removed", drv->first_bss->ifname);
1004                 } else {
1005                         struct i802_bss *bss;
1006                         u8 addr[ETH_ALEN];
1007
1008                         /* Re-read MAC address as it may have changed */
1009                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1010                         if (bss &&
1011                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1012                                                bss->ifname, addr) < 0) {
1013                                 wpa_printf(MSG_DEBUG,
1014                                            "nl80211: %s: failed to re-read MAC address",
1015                                            bss->ifname);
1016                         } else if (bss &&
1017                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1018                                 wpa_printf(MSG_DEBUG,
1019                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1020                                            MACSTR " to " MACSTR,
1021                                            ifi->ifi_index, bss->ifname,
1022                                            MAC2STR(bss->addr),
1023                                            MAC2STR(addr));
1024                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1025                         }
1026
1027                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1028                         drv->if_disabled = 0;
1029                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1030                                              NULL);
1031                 }
1032         }
1033
1034         /*
1035          * Some drivers send the association event before the operup event--in
1036          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1037          * fails. This will hit us when wpa_supplicant does not need to do
1038          * IEEE 802.1X authentication
1039          */
1040         if (drv->operstate == 1 &&
1041             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1042             !(ifi->ifi_flags & IFF_RUNNING)) {
1043                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1044                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1045                                        -1, IF_OPER_UP);
1046         }
1047
1048         if (ifname[0])
1049                 wpa_driver_nl80211_event_newlink(drv, ifname);
1050
1051         if (ifi->ifi_family == AF_BRIDGE && brid) {
1052                 struct i802_bss *bss;
1053
1054                 /* device has been added to bridge */
1055                 if (!if_indextoname(brid, namebuf)) {
1056                         wpa_printf(MSG_DEBUG,
1057                                    "nl80211: Could not find bridge ifname for ifindex %u",
1058                                    brid);
1059                         return;
1060                 }
1061                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1062                            brid, namebuf);
1063                 add_ifidx(drv, brid);
1064
1065                 for (bss = drv->first_bss; bss; bss = bss->next) {
1066                         if (os_strcmp(ifname, bss->ifname) == 0) {
1067                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1068                                 break;
1069                         }
1070                 }
1071         }
1072 }
1073
1074
1075 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1076                                                  struct ifinfomsg *ifi,
1077                                                  u8 *buf, size_t len)
1078 {
1079         struct nl80211_global *global = ctx;
1080         struct wpa_driver_nl80211_data *drv;
1081         int attrlen;
1082         struct rtattr *attr;
1083         u32 brid = 0;
1084         char ifname[IFNAMSIZ + 1];
1085         char extra[100], *pos, *end;
1086
1087         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1088         if (!drv) {
1089                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1090                            ifi->ifi_index);
1091                 return;
1092         }
1093
1094         extra[0] = '\0';
1095         pos = extra;
1096         end = pos + sizeof(extra);
1097         ifname[0] = '\0';
1098
1099         attrlen = len;
1100         attr = (struct rtattr *) buf;
1101         while (RTA_OK(attr, attrlen)) {
1102                 switch (attr->rta_type) {
1103                 case IFLA_IFNAME:
1104                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1105                                 break;
1106                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1107                         ifname[RTA_PAYLOAD(attr)] = '\0';
1108                         break;
1109                 case IFLA_MASTER:
1110                         brid = nla_get_u32((struct nlattr *) attr);
1111                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1112                         break;
1113                 case IFLA_OPERSTATE:
1114                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1115                                            nla_get_u32((struct nlattr *) attr));
1116                         break;
1117                 case IFLA_LINKMODE:
1118                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1119                                            nla_get_u32((struct nlattr *) attr));
1120                         break;
1121                 }
1122                 attr = RTA_NEXT(attr, attrlen);
1123         }
1124         extra[sizeof(extra) - 1] = '\0';
1125
1126         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1127                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1128                    ifi->ifi_flags,
1129                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1130                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1131                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1132                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1133
1134         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1135                 wpa_driver_nl80211_event_dellink(drv, ifname);
1136
1137         if (ifi->ifi_family == AF_BRIDGE && brid) {
1138                 /* device has been removed from bridge */
1139                 char namebuf[IFNAMSIZ];
1140
1141                 if (!if_indextoname(brid, namebuf)) {
1142                         wpa_printf(MSG_DEBUG,
1143                                    "nl80211: Could not find bridge ifname for ifindex %u",
1144                                    brid);
1145                 } else {
1146                         wpa_printf(MSG_DEBUG,
1147                                    "nl80211: Remove ifindex %u for bridge %s",
1148                                    brid, namebuf);
1149                 }
1150                 del_ifidx(drv, brid);
1151         }
1152 }
1153
1154
1155 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1156 {
1157         struct nl_msg *msg;
1158         int ret;
1159         struct nl80211_bss_info_arg arg;
1160
1161         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1162         os_memset(&arg, 0, sizeof(arg));
1163         arg.drv = drv;
1164         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1165         if (ret == 0) {
1166                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1167                         arg.ibss_freq : arg.assoc_freq;
1168                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1169                            "associated BSS from scan results: %u MHz", freq);
1170                 if (freq)
1171                         drv->assoc_freq = freq;
1172                 return drv->assoc_freq;
1173         }
1174         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1175                    "(%s)", ret, strerror(-ret));
1176         return drv->assoc_freq;
1177 }
1178
1179
1180 static int get_link_signal(struct nl_msg *msg, void *arg)
1181 {
1182         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1183         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1184         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1185         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1186                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1187                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1188         };
1189         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1190         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1191                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1192                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1193                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1194                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1195         };
1196         struct wpa_signal_info *sig_change = arg;
1197
1198         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1199                   genlmsg_attrlen(gnlh, 0), NULL);
1200         if (!tb[NL80211_ATTR_STA_INFO] ||
1201             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1202                              tb[NL80211_ATTR_STA_INFO], policy))
1203                 return NL_SKIP;
1204         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1205                 return NL_SKIP;
1206
1207         sig_change->current_signal =
1208                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1209
1210         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1211                 sig_change->avg_signal =
1212                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1213         else
1214                 sig_change->avg_signal = 0;
1215
1216         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1217                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1218                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1219                                      rate_policy)) {
1220                         sig_change->current_txrate = 0;
1221                 } else {
1222                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1223                                 sig_change->current_txrate =
1224                                         nla_get_u16(rinfo[
1225                                              NL80211_RATE_INFO_BITRATE]) * 100;
1226                         }
1227                 }
1228         }
1229
1230         return NL_SKIP;
1231 }
1232
1233
1234 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1235                             struct wpa_signal_info *sig)
1236 {
1237         struct nl_msg *msg;
1238
1239         sig->current_signal = -9999;
1240         sig->current_txrate = 0;
1241
1242         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1243             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1244                 nlmsg_free(msg);
1245                 return -ENOBUFS;
1246         }
1247
1248         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1249 }
1250
1251
1252 static int get_link_noise(struct nl_msg *msg, void *arg)
1253 {
1254         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1255         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1256         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1257         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1258                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1259                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1260         };
1261         struct wpa_signal_info *sig_change = arg;
1262
1263         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1264                   genlmsg_attrlen(gnlh, 0), NULL);
1265
1266         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1267                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1268                 return NL_SKIP;
1269         }
1270
1271         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1272                              tb[NL80211_ATTR_SURVEY_INFO],
1273                              survey_policy)) {
1274                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1275                            "attributes!");
1276                 return NL_SKIP;
1277         }
1278
1279         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1280                 return NL_SKIP;
1281
1282         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1283             sig_change->frequency)
1284                 return NL_SKIP;
1285
1286         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1287                 return NL_SKIP;
1288
1289         sig_change->current_noise =
1290                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1291
1292         return NL_SKIP;
1293 }
1294
1295
1296 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1297                            struct wpa_signal_info *sig_change)
1298 {
1299         struct nl_msg *msg;
1300
1301         sig_change->current_noise = 9999;
1302         sig_change->frequency = drv->assoc_freq;
1303
1304         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1305         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1306 }
1307
1308
1309 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1310                                              void *handle)
1311 {
1312         struct nl_cb *cb = eloop_ctx;
1313         int res;
1314
1315         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1316
1317         res = nl_recvmsgs(handle, cb);
1318         if (res < 0) {
1319                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1320                            __func__, res);
1321         }
1322 }
1323
1324
1325 /**
1326  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1327  * @priv: driver_nl80211 private data
1328  * @alpha2_arg: country to which to switch to
1329  * Returns: 0 on success, -1 on failure
1330  *
1331  * This asks nl80211 to set the regulatory domain for given
1332  * country ISO / IEC alpha2.
1333  */
1334 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1335 {
1336         struct i802_bss *bss = priv;
1337         struct wpa_driver_nl80211_data *drv = bss->drv;
1338         char alpha2[3];
1339         struct nl_msg *msg;
1340
1341         msg = nlmsg_alloc();
1342         if (!msg)
1343                 return -ENOMEM;
1344
1345         alpha2[0] = alpha2_arg[0];
1346         alpha2[1] = alpha2_arg[1];
1347         alpha2[2] = '\0';
1348
1349         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1350             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1351                 nlmsg_free(msg);
1352                 return -EINVAL;
1353         }
1354         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1355                 return -EINVAL;
1356         return 0;
1357 }
1358
1359
1360 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1361 {
1362         char *alpha2 = arg;
1363         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1364         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1365
1366         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1367                   genlmsg_attrlen(gnlh, 0), NULL);
1368         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1369                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1370                 return NL_SKIP;
1371         }
1372         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1373         return NL_SKIP;
1374 }
1375
1376
1377 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1378 {
1379         struct i802_bss *bss = priv;
1380         struct wpa_driver_nl80211_data *drv = bss->drv;
1381         struct nl_msg *msg;
1382         int ret;
1383
1384         msg = nlmsg_alloc();
1385         if (!msg)
1386                 return -ENOMEM;
1387
1388         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1389         alpha2[0] = '\0';
1390         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1391         if (!alpha2[0])
1392                 ret = -1;
1393
1394         return ret;
1395 }
1396
1397
1398 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1399 {
1400         int ret;
1401
1402         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1403         if (global->nl_cb == NULL) {
1404                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1405                            "callbacks");
1406                 return -1;
1407         }
1408
1409         global->nl = nl_create_handle(global->nl_cb, "nl");
1410         if (global->nl == NULL)
1411                 goto err;
1412
1413         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1414         if (global->nl80211_id < 0) {
1415                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1416                            "found");
1417                 goto err;
1418         }
1419
1420         global->nl_event = nl_create_handle(global->nl_cb, "event");
1421         if (global->nl_event == NULL)
1422                 goto err;
1423
1424         ret = nl_get_multicast_id(global, "nl80211", "scan");
1425         if (ret >= 0)
1426                 ret = nl_socket_add_membership(global->nl_event, ret);
1427         if (ret < 0) {
1428                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1429                            "membership for scan events: %d (%s)",
1430                            ret, strerror(-ret));
1431                 goto err;
1432         }
1433
1434         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1435         if (ret >= 0)
1436                 ret = nl_socket_add_membership(global->nl_event, ret);
1437         if (ret < 0) {
1438                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1439                            "membership for mlme events: %d (%s)",
1440                            ret, strerror(-ret));
1441                 goto err;
1442         }
1443
1444         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1445         if (ret >= 0)
1446                 ret = nl_socket_add_membership(global->nl_event, ret);
1447         if (ret < 0) {
1448                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1449                            "membership for regulatory events: %d (%s)",
1450                            ret, strerror(-ret));
1451                 /* Continue without regulatory events */
1452         }
1453
1454         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1455         if (ret >= 0)
1456                 ret = nl_socket_add_membership(global->nl_event, ret);
1457         if (ret < 0) {
1458                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1459                            "membership for vendor events: %d (%s)",
1460                            ret, strerror(-ret));
1461                 /* Continue without vendor events */
1462         }
1463
1464         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1465                   no_seq_check, NULL);
1466         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1467                   process_global_event, global);
1468
1469         nl80211_register_eloop_read(&global->nl_event,
1470                                     wpa_driver_nl80211_event_receive,
1471                                     global->nl_cb);
1472
1473         return 0;
1474
1475 err:
1476         nl_destroy_handles(&global->nl_event);
1477         nl_destroy_handles(&global->nl);
1478         nl_cb_put(global->nl_cb);
1479         global->nl_cb = NULL;
1480         return -1;
1481 }
1482
1483
1484 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1485 {
1486         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1487         /*
1488          * This may be for any interface; use ifdown event to disable
1489          * interface.
1490          */
1491 }
1492
1493
1494 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1495 {
1496         struct wpa_driver_nl80211_data *drv = ctx;
1497         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1498         if (i802_set_iface_flags(drv->first_bss, 1)) {
1499                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1500                            "after rfkill unblock");
1501                 return;
1502         }
1503         /* rtnetlink ifup handler will report interface as enabled */
1504 }
1505
1506
1507 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1508                                                       void *eloop_ctx,
1509                                                       void *handle)
1510 {
1511         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1512         u8 data[2048];
1513         struct msghdr msg;
1514         struct iovec entry;
1515         u8 control[512];
1516         struct cmsghdr *cmsg;
1517         int res, found_ee = 0, found_wifi = 0, acked = 0;
1518         union wpa_event_data event;
1519
1520         memset(&msg, 0, sizeof(msg));
1521         msg.msg_iov = &entry;
1522         msg.msg_iovlen = 1;
1523         entry.iov_base = data;
1524         entry.iov_len = sizeof(data);
1525         msg.msg_control = &control;
1526         msg.msg_controllen = sizeof(control);
1527
1528         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1529         /* if error or not fitting 802.3 header, return */
1530         if (res < 14)
1531                 return;
1532
1533         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1534         {
1535                 if (cmsg->cmsg_level == SOL_SOCKET &&
1536                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1537                         int *ack;
1538
1539                         found_wifi = 1;
1540                         ack = (void *)CMSG_DATA(cmsg);
1541                         acked = *ack;
1542                 }
1543
1544                 if (cmsg->cmsg_level == SOL_PACKET &&
1545                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1546                         struct sock_extended_err *err =
1547                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1548
1549                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1550                                 found_ee = 1;
1551                 }
1552         }
1553
1554         if (!found_ee || !found_wifi)
1555                 return;
1556
1557         memset(&event, 0, sizeof(event));
1558         event.eapol_tx_status.dst = data;
1559         event.eapol_tx_status.data = data + 14;
1560         event.eapol_tx_status.data_len = res - 14;
1561         event.eapol_tx_status.ack = acked;
1562         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1563 }
1564
1565
1566 static int nl80211_init_bss(struct i802_bss *bss)
1567 {
1568         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1569         if (!bss->nl_cb)
1570                 return -1;
1571
1572         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1573                   no_seq_check, NULL);
1574         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1575                   process_bss_event, bss);
1576
1577         return 0;
1578 }
1579
1580
1581 static void nl80211_destroy_bss(struct i802_bss *bss)
1582 {
1583         nl_cb_put(bss->nl_cb);
1584         bss->nl_cb = NULL;
1585 }
1586
1587
1588 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1589                                           void *global_priv, int hostapd,
1590                                           const u8 *set_addr,
1591                                           const char *driver_params)
1592 {
1593         struct wpa_driver_nl80211_data *drv;
1594         struct rfkill_config *rcfg;
1595         struct i802_bss *bss;
1596
1597         if (global_priv == NULL)
1598                 return NULL;
1599         drv = os_zalloc(sizeof(*drv));
1600         if (drv == NULL)
1601                 return NULL;
1602         drv->global = global_priv;
1603         drv->ctx = ctx;
1604         drv->hostapd = !!hostapd;
1605         drv->eapol_sock = -1;
1606
1607         /*
1608          * There is no driver capability flag for this, so assume it is
1609          * supported and disable this on first attempt to use if the driver
1610          * rejects the command due to missing support.
1611          */
1612         drv->set_rekey_offload = 1;
1613
1614         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1615         drv->if_indices = drv->default_if_indices;
1616
1617         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1618         if (!drv->first_bss) {
1619                 os_free(drv);
1620                 return NULL;
1621         }
1622         bss = drv->first_bss;
1623         bss->drv = drv;
1624         bss->ctx = ctx;
1625
1626         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1627         drv->monitor_ifidx = -1;
1628         drv->monitor_sock = -1;
1629         drv->eapol_tx_sock = -1;
1630         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1631
1632         if (nl80211_init_bss(bss))
1633                 goto failed;
1634
1635         rcfg = os_zalloc(sizeof(*rcfg));
1636         if (rcfg == NULL)
1637                 goto failed;
1638         rcfg->ctx = drv;
1639         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1640         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1641         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1642         drv->rfkill = rfkill_init(rcfg);
1643         if (drv->rfkill == NULL) {
1644                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1645                 os_free(rcfg);
1646         }
1647
1648         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1649                 drv->start_iface_up = 1;
1650
1651         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1652                 goto failed;
1653
1654         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1655         if (drv->eapol_tx_sock < 0)
1656                 goto failed;
1657
1658         if (drv->data_tx_status) {
1659                 int enabled = 1;
1660
1661                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1662                                &enabled, sizeof(enabled)) < 0) {
1663                         wpa_printf(MSG_DEBUG,
1664                                 "nl80211: wifi status sockopt failed\n");
1665                         drv->data_tx_status = 0;
1666                         if (!drv->use_monitor)
1667                                 drv->capa.flags &=
1668                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1669                 } else {
1670                         eloop_register_read_sock(drv->eapol_tx_sock,
1671                                 wpa_driver_nl80211_handle_eapol_tx_status,
1672                                 drv, NULL);
1673                 }
1674         }
1675
1676         if (drv->global) {
1677                 dl_list_add(&drv->global->interfaces, &drv->list);
1678                 drv->in_interface_list = 1;
1679         }
1680
1681         return bss;
1682
1683 failed:
1684         wpa_driver_nl80211_deinit(bss);
1685         return NULL;
1686 }
1687
1688
1689 /**
1690  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1691  * @ctx: context to be used when calling wpa_supplicant functions,
1692  * e.g., wpa_supplicant_event()
1693  * @ifname: interface name, e.g., wlan0
1694  * @global_priv: private driver global data from global_init()
1695  * Returns: Pointer to private data, %NULL on failure
1696  */
1697 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1698                                       void *global_priv)
1699 {
1700         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1701                                            NULL);
1702 }
1703
1704
1705 static int nl80211_register_frame(struct i802_bss *bss,
1706                                   struct nl_handle *nl_handle,
1707                                   u16 type, const u8 *match, size_t match_len)
1708 {
1709         struct wpa_driver_nl80211_data *drv = bss->drv;
1710         struct nl_msg *msg;
1711         int ret;
1712         char buf[30];
1713
1714         buf[0] = '\0';
1715         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1716         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1717                    type, fc2str(type), nl_handle, buf);
1718
1719         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1720             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1721             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1722                 nlmsg_free(msg);
1723                 return -1;
1724         }
1725
1726         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1727         if (ret) {
1728                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1729                            "failed (type=%u): ret=%d (%s)",
1730                            type, ret, strerror(-ret));
1731                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1732                             match, match_len);
1733         }
1734         return ret;
1735 }
1736
1737
1738 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1739 {
1740         if (bss->nl_mgmt) {
1741                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1742                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1743                 return -1;
1744         }
1745
1746         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1747         if (bss->nl_mgmt == NULL)
1748                 return -1;
1749
1750         return 0;
1751 }
1752
1753
1754 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1755 {
1756         nl80211_register_eloop_read(&bss->nl_mgmt,
1757                                     wpa_driver_nl80211_event_receive,
1758                                     bss->nl_cb);
1759 }
1760
1761
1762 static int nl80211_register_action_frame(struct i802_bss *bss,
1763                                          const u8 *match, size_t match_len)
1764 {
1765         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1766         return nl80211_register_frame(bss, bss->nl_mgmt,
1767                                       type, match, match_len);
1768 }
1769
1770
1771 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1772 {
1773         struct wpa_driver_nl80211_data *drv = bss->drv;
1774         int ret = 0;
1775
1776         if (nl80211_alloc_mgmt_handle(bss))
1777                 return -1;
1778         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1779                    "handle %p", bss->nl_mgmt);
1780
1781         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1782                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1783
1784                 /* register for any AUTH message */
1785                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1786         }
1787
1788 #ifdef CONFIG_INTERWORKING
1789         /* QoS Map Configure */
1790         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1791                 ret = -1;
1792 #endif /* CONFIG_INTERWORKING */
1793 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1794         /* GAS Initial Request */
1795         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1796                 ret = -1;
1797         /* GAS Initial Response */
1798         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1799                 ret = -1;
1800         /* GAS Comeback Request */
1801         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1802                 ret = -1;
1803         /* GAS Comeback Response */
1804         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1805                 ret = -1;
1806         /* Protected GAS Initial Request */
1807         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1808                 ret = -1;
1809         /* Protected GAS Initial Response */
1810         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1811                 ret = -1;
1812         /* Protected GAS Comeback Request */
1813         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1814                 ret = -1;
1815         /* Protected GAS Comeback Response */
1816         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1817                 ret = -1;
1818 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1819 #ifdef CONFIG_P2P
1820         /* P2P Public Action */
1821         if (nl80211_register_action_frame(bss,
1822                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1823                                           6) < 0)
1824                 ret = -1;
1825         /* P2P Action */
1826         if (nl80211_register_action_frame(bss,
1827                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1828                                           5) < 0)
1829                 ret = -1;
1830 #endif /* CONFIG_P2P */
1831 #ifdef CONFIG_IEEE80211W
1832         /* SA Query Response */
1833         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1834                 ret = -1;
1835 #endif /* CONFIG_IEEE80211W */
1836 #ifdef CONFIG_TDLS
1837         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1838                 /* TDLS Discovery Response */
1839                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1840                     0)
1841                         ret = -1;
1842         }
1843 #endif /* CONFIG_TDLS */
1844
1845         /* FT Action frames */
1846         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1847                 ret = -1;
1848         else
1849                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1850                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1851
1852         /* WNM - BSS Transition Management Request */
1853         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1854                 ret = -1;
1855         /* WNM-Sleep Mode Response */
1856         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1857                 ret = -1;
1858
1859 #ifdef CONFIG_HS20
1860         /* WNM-Notification */
1861         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1862                 ret = -1;
1863 #endif /* CONFIG_HS20 */
1864
1865         /* WMM-AC ADDTS Response */
1866         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1867                 ret = -1;
1868
1869         /* WMM-AC DELTS */
1870         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1871                 ret = -1;
1872
1873         /* Radio Measurement - Neighbor Report Response */
1874         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1875                 ret = -1;
1876
1877         /* Radio Measurement - Link Measurement Request */
1878         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1879             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1880                 ret = -1;
1881
1882         nl80211_mgmt_handle_register_eloop(bss);
1883
1884         return ret;
1885 }
1886
1887
1888 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1889 {
1890         int ret = 0;
1891
1892         if (nl80211_alloc_mgmt_handle(bss))
1893                 return -1;
1894
1895         wpa_printf(MSG_DEBUG,
1896                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1897                    bss->nl_mgmt);
1898
1899         /* Auth frames for mesh SAE */
1900         if (nl80211_register_frame(bss, bss->nl_mgmt,
1901                                    (WLAN_FC_TYPE_MGMT << 2) |
1902                                    (WLAN_FC_STYPE_AUTH << 4),
1903                                    NULL, 0) < 0)
1904                 ret = -1;
1905
1906         /* Mesh peering open */
1907         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1908                 ret = -1;
1909         /* Mesh peering confirm */
1910         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1911                 ret = -1;
1912         /* Mesh peering close */
1913         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1914                 ret = -1;
1915
1916         nl80211_mgmt_handle_register_eloop(bss);
1917
1918         return ret;
1919 }
1920
1921
1922 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1923 {
1924         struct nl_msg *msg;
1925         int ret;
1926
1927         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1928         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1929         if (ret) {
1930                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1931                            "failed: ret=%d (%s)",
1932                            ret, strerror(-ret));
1933         }
1934         return ret;
1935 }
1936
1937
1938 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1939 {
1940         static const int stypes[] = {
1941                 WLAN_FC_STYPE_AUTH,
1942                 WLAN_FC_STYPE_ASSOC_REQ,
1943                 WLAN_FC_STYPE_REASSOC_REQ,
1944                 WLAN_FC_STYPE_DISASSOC,
1945                 WLAN_FC_STYPE_DEAUTH,
1946                 WLAN_FC_STYPE_ACTION,
1947                 WLAN_FC_STYPE_PROBE_REQ,
1948 /* Beacon doesn't work as mac80211 doesn't currently allow
1949  * it, but it wouldn't really be the right thing anyway as
1950  * it isn't per interface ... maybe just dump the scan
1951  * results periodically for OLBC?
1952  */
1953                 /* WLAN_FC_STYPE_BEACON, */
1954         };
1955         unsigned int i;
1956
1957         if (nl80211_alloc_mgmt_handle(bss))
1958                 return -1;
1959         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1960                    "handle %p", bss->nl_mgmt);
1961
1962         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
1963                 if (nl80211_register_frame(bss, bss->nl_mgmt,
1964                                            (WLAN_FC_TYPE_MGMT << 2) |
1965                                            (stypes[i] << 4),
1966                                            NULL, 0) < 0) {
1967                         goto out_err;
1968                 }
1969         }
1970
1971         if (nl80211_register_spurious_class3(bss))
1972                 goto out_err;
1973
1974         if (nl80211_get_wiphy_data_ap(bss) == NULL)
1975                 goto out_err;
1976
1977         nl80211_mgmt_handle_register_eloop(bss);
1978         return 0;
1979
1980 out_err:
1981         nl_destroy_handles(&bss->nl_mgmt);
1982         return -1;
1983 }
1984
1985
1986 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
1987 {
1988         if (nl80211_alloc_mgmt_handle(bss))
1989                 return -1;
1990         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1991                    "handle %p (device SME)", bss->nl_mgmt);
1992
1993         if (nl80211_register_frame(bss, bss->nl_mgmt,
1994                                    (WLAN_FC_TYPE_MGMT << 2) |
1995                                    (WLAN_FC_STYPE_ACTION << 4),
1996                                    NULL, 0) < 0)
1997                 goto out_err;
1998
1999         nl80211_mgmt_handle_register_eloop(bss);
2000         return 0;
2001
2002 out_err:
2003         nl_destroy_handles(&bss->nl_mgmt);
2004         return -1;
2005 }
2006
2007
2008 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2009 {
2010         if (bss->nl_mgmt == NULL)
2011                 return;
2012         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2013                    "(%s)", bss->nl_mgmt, reason);
2014         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2015
2016         nl80211_put_wiphy_data_ap(bss);
2017 }
2018
2019
2020 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2021 {
2022         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2023 }
2024
2025
2026 static void nl80211_del_p2pdev(struct i802_bss *bss)
2027 {
2028         struct nl_msg *msg;
2029         int ret;
2030
2031         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2032         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2033
2034         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2035                    bss->ifname, (long long unsigned int) bss->wdev_id,
2036                    strerror(-ret));
2037 }
2038
2039
2040 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2041 {
2042         struct nl_msg *msg;
2043         int ret;
2044
2045         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2046                               NL80211_CMD_STOP_P2P_DEVICE);
2047         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2048
2049         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2050                    start ? "Start" : "Stop",
2051                    bss->ifname, (long long unsigned int) bss->wdev_id,
2052                    strerror(-ret));
2053         return ret;
2054 }
2055
2056
2057 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2058 {
2059         enum nl80211_iftype nlmode;
2060
2061         nlmode = nl80211_get_ifmode(bss);
2062         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2063                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2064                                              bss->ifname, up);
2065         }
2066
2067         /* P2P Device has start/stop which is equivalent */
2068         return nl80211_set_p2pdev(bss, up);
2069 }
2070
2071
2072 #ifdef CONFIG_TESTING_OPTIONS
2073 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2074 {
2075         /* struct wpa_driver_nl80211_data *drv = arg; */
2076         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2077         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2078
2079
2080         wpa_printf(MSG_DEBUG,
2081                    "nl80211: QCA vendor test command response received");
2082
2083         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2084                   genlmsg_attrlen(gnlh, 0), NULL);
2085         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2086                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2087                 return NL_SKIP;
2088         }
2089
2090         wpa_hexdump(MSG_DEBUG,
2091                     "nl80211: Received QCA vendor test command response",
2092                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2093                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2094
2095         return NL_SKIP;
2096 }
2097 #endif /* CONFIG_TESTING_OPTIONS */
2098
2099
2100 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2101 {
2102 #ifdef CONFIG_TESTING_OPTIONS
2103         struct nl_msg *msg;
2104         struct nlattr *params;
2105         int ret;
2106
2107         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2108             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2109             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2110                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2111             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2112             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2113                 nlmsg_free(msg);
2114                 return;
2115         }
2116         nla_nest_end(msg, params);
2117
2118         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2119         wpa_printf(MSG_DEBUG,
2120                    "nl80211: QCA vendor test command returned %d (%s)",
2121                    ret, strerror(-ret));
2122 #endif /* CONFIG_TESTING_OPTIONS */
2123 }
2124
2125
2126 static int
2127 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2128                                    const u8 *set_addr, int first,
2129                                    const char *driver_params)
2130 {
2131         struct i802_bss *bss = drv->first_bss;
2132         int send_rfkill_event = 0;
2133         enum nl80211_iftype nlmode;
2134
2135         drv->ifindex = if_nametoindex(bss->ifname);
2136         bss->ifindex = drv->ifindex;
2137         bss->wdev_id = drv->global->if_add_wdevid;
2138         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2139
2140         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2141         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2142         drv->global->if_add_wdevid_set = 0;
2143
2144         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2145                 bss->static_ap = 1;
2146
2147         if (wpa_driver_nl80211_capa(drv))
2148                 return -1;
2149
2150         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2151                 return -1;
2152
2153         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2154                    bss->ifname, drv->phyname);
2155
2156         if (set_addr &&
2157             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2158              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2159                                 set_addr)))
2160                 return -1;
2161
2162         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2163                 drv->start_mode_ap = 1;
2164
2165         if (drv->hostapd || bss->static_ap)
2166                 nlmode = NL80211_IFTYPE_AP;
2167         else if (bss->if_dynamic)
2168                 nlmode = nl80211_get_ifmode(bss);
2169         else
2170                 nlmode = NL80211_IFTYPE_STATION;
2171
2172         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2173                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2174                 return -1;
2175         }
2176
2177         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2178                 nl80211_get_macaddr(bss);
2179
2180         if (!rfkill_is_blocked(drv->rfkill)) {
2181                 int ret = i802_set_iface_flags(bss, 1);
2182                 if (ret) {
2183                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2184                                    "interface '%s' UP", bss->ifname);
2185                         return ret;
2186                 }
2187                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2188                         return ret;
2189         } else {
2190                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2191                            "interface '%s' due to rfkill", bss->ifname);
2192                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2193                         return 0;
2194                 drv->if_disabled = 1;
2195                 send_rfkill_event = 1;
2196         }
2197
2198         if (!drv->hostapd)
2199                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2200                                        1, IF_OPER_DORMANT);
2201
2202         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2203                                bss->addr))
2204                 return -1;
2205         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2206
2207         if (send_rfkill_event) {
2208                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2209                                        drv, drv->ctx);
2210         }
2211
2212         if (drv->vendor_cmd_test_avail)
2213                 qca_vendor_test(drv);
2214
2215         return 0;
2216 }
2217
2218
2219 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2220 {
2221         struct nl_msg *msg;
2222
2223         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2224                    drv->ifindex);
2225         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2226         return send_and_recv_msgs(drv, msg, NULL, NULL);
2227 }
2228
2229
2230 /**
2231  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2232  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2233  *
2234  * Shut down driver interface and processing of driver events. Free
2235  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2236  */
2237 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2238 {
2239         struct wpa_driver_nl80211_data *drv = bss->drv;
2240
2241         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2242                    bss->ifname, drv->disabled_11b_rates);
2243
2244         bss->in_deinit = 1;
2245         if (drv->data_tx_status)
2246                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2247         if (drv->eapol_tx_sock >= 0)
2248                 close(drv->eapol_tx_sock);
2249
2250         if (bss->nl_preq)
2251                 wpa_driver_nl80211_probe_req_report(bss, 0);
2252         if (bss->added_if_into_bridge) {
2253                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2254                                     bss->ifname) < 0)
2255                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2256                                    "interface %s from bridge %s: %s",
2257                                    bss->ifname, bss->brname, strerror(errno));
2258                 if (drv->rtnl_sk)
2259                         nl80211_handle_destroy(drv->rtnl_sk);
2260         }
2261         if (bss->added_bridge) {
2262                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2263                                           0) < 0)
2264                         wpa_printf(MSG_INFO,
2265                                    "nl80211: Could not set bridge %s down",
2266                                    bss->brname);
2267                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2268                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2269                                    "bridge %s: %s",
2270                                    bss->brname, strerror(errno));
2271         }
2272
2273         nl80211_remove_monitor_interface(drv);
2274
2275         if (is_ap_interface(drv->nlmode))
2276                 wpa_driver_nl80211_del_beacon(drv);
2277
2278         if (drv->eapol_sock >= 0) {
2279                 eloop_unregister_read_sock(drv->eapol_sock);
2280                 close(drv->eapol_sock);
2281         }
2282
2283         if (drv->if_indices != drv->default_if_indices)
2284                 os_free(drv->if_indices);
2285
2286         if (drv->disabled_11b_rates)
2287                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2288
2289         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2290                                IF_OPER_UP);
2291         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2292         rfkill_deinit(drv->rfkill);
2293
2294         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2295
2296         if (!drv->start_iface_up)
2297                 (void) i802_set_iface_flags(bss, 0);
2298
2299         if (drv->addr_changed) {
2300                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2301                                           0) < 0) {
2302                         wpa_printf(MSG_DEBUG,
2303                                    "nl80211: Could not set interface down to restore permanent MAC address");
2304                 }
2305                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2306                                        drv->perm_addr) < 0) {
2307                         wpa_printf(MSG_DEBUG,
2308                                    "nl80211: Could not restore permanent MAC address");
2309                 }
2310         }
2311
2312         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2313                 if (!drv->hostapd || !drv->start_mode_ap)
2314                         wpa_driver_nl80211_set_mode(bss,
2315                                                     NL80211_IFTYPE_STATION);
2316                 nl80211_mgmt_unsubscribe(bss, "deinit");
2317         } else {
2318                 nl80211_mgmt_unsubscribe(bss, "deinit");
2319                 nl80211_del_p2pdev(bss);
2320         }
2321
2322         nl80211_destroy_bss(drv->first_bss);
2323
2324         os_free(drv->filter_ssids);
2325
2326         os_free(drv->auth_ie);
2327
2328         if (drv->in_interface_list)
2329                 dl_list_del(&drv->list);
2330
2331         os_free(drv->extended_capa);
2332         os_free(drv->extended_capa_mask);
2333         os_free(drv->first_bss);
2334         os_free(drv);
2335 }
2336
2337
2338 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2339 {
2340         switch (alg) {
2341         case WPA_ALG_WEP:
2342                 if (key_len == 5)
2343                         return WLAN_CIPHER_SUITE_WEP40;
2344                 return WLAN_CIPHER_SUITE_WEP104;
2345         case WPA_ALG_TKIP:
2346                 return WLAN_CIPHER_SUITE_TKIP;
2347         case WPA_ALG_CCMP:
2348                 return WLAN_CIPHER_SUITE_CCMP;
2349         case WPA_ALG_GCMP:
2350                 return WLAN_CIPHER_SUITE_GCMP;
2351         case WPA_ALG_CCMP_256:
2352                 return WLAN_CIPHER_SUITE_CCMP_256;
2353         case WPA_ALG_GCMP_256:
2354                 return WLAN_CIPHER_SUITE_GCMP_256;
2355         case WPA_ALG_IGTK:
2356                 return WLAN_CIPHER_SUITE_AES_CMAC;
2357         case WPA_ALG_BIP_GMAC_128:
2358                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2359         case WPA_ALG_BIP_GMAC_256:
2360                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2361         case WPA_ALG_BIP_CMAC_256:
2362                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2363         case WPA_ALG_SMS4:
2364                 return WLAN_CIPHER_SUITE_SMS4;
2365         case WPA_ALG_KRK:
2366                 return WLAN_CIPHER_SUITE_KRK;
2367         case WPA_ALG_NONE:
2368         case WPA_ALG_PMK:
2369                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2370                            alg);
2371                 return 0;
2372         }
2373
2374         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2375                    alg);
2376         return 0;
2377 }
2378
2379
2380 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2381 {
2382         switch (cipher) {
2383         case WPA_CIPHER_CCMP_256:
2384                 return WLAN_CIPHER_SUITE_CCMP_256;
2385         case WPA_CIPHER_GCMP_256:
2386                 return WLAN_CIPHER_SUITE_GCMP_256;
2387         case WPA_CIPHER_CCMP:
2388                 return WLAN_CIPHER_SUITE_CCMP;
2389         case WPA_CIPHER_GCMP:
2390                 return WLAN_CIPHER_SUITE_GCMP;
2391         case WPA_CIPHER_TKIP:
2392                 return WLAN_CIPHER_SUITE_TKIP;
2393         case WPA_CIPHER_WEP104:
2394                 return WLAN_CIPHER_SUITE_WEP104;
2395         case WPA_CIPHER_WEP40:
2396                 return WLAN_CIPHER_SUITE_WEP40;
2397         case WPA_CIPHER_GTK_NOT_USED:
2398                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2399         }
2400
2401         return 0;
2402 }
2403
2404
2405 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2406                                        int max_suites)
2407 {
2408         int num_suites = 0;
2409
2410         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2411                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2412         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2413                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2414         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2415                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2416         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2417                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2418         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2419                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2420         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2421                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2422         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2423                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2424
2425         return num_suites;
2426 }
2427
2428
2429 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2430                                   const u8 *key, size_t key_len)
2431 {
2432         struct nl_msg *msg;
2433         int ret;
2434
2435         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2436                 return 0;
2437
2438         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2439             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2440             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2441                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2442             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2443                 nl80211_nlmsg_clear(msg);
2444                 nlmsg_free(msg);
2445                 return -1;
2446         }
2447         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2448         if (ret) {
2449                 wpa_printf(MSG_DEBUG,
2450                            "nl80211: Key management set key failed: ret=%d (%s)",
2451                            ret, strerror(-ret));
2452         }
2453
2454         return ret;
2455 }
2456
2457
2458 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2459                                       enum wpa_alg alg, const u8 *addr,
2460                                       int key_idx, int set_tx,
2461                                       const u8 *seq, size_t seq_len,
2462                                       const u8 *key, size_t key_len)
2463 {
2464         struct wpa_driver_nl80211_data *drv = bss->drv;
2465         int ifindex;
2466         struct nl_msg *msg;
2467         int ret;
2468         int tdls = 0;
2469
2470         /* Ignore for P2P Device */
2471         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2472                 return 0;
2473
2474         ifindex = if_nametoindex(ifname);
2475         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2476                    "set_tx=%d seq_len=%lu key_len=%lu",
2477                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2478                    (unsigned long) seq_len, (unsigned long) key_len);
2479 #ifdef CONFIG_TDLS
2480         if (key_idx == -1) {
2481                 key_idx = 0;
2482                 tdls = 1;
2483         }
2484 #endif /* CONFIG_TDLS */
2485
2486         if (alg == WPA_ALG_PMK &&
2487             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2488                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2489                            __func__);
2490                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2491                 return ret;
2492         }
2493
2494         if (alg == WPA_ALG_NONE) {
2495                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2496                 if (!msg)
2497                         return -ENOBUFS;
2498         } else {
2499                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2500                 if (!msg ||
2501                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2502                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
2503                                 wpa_alg_to_cipher_suite(alg, key_len)))
2504                         goto fail;
2505                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2506         }
2507
2508         if (seq && seq_len) {
2509                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2510                         goto fail;
2511                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2512         }
2513
2514         if (addr && !is_broadcast_ether_addr(addr)) {
2515                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2516                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2517                         goto fail;
2518
2519                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2520                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2521                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2522                                         NL80211_KEYTYPE_GROUP))
2523                                 goto fail;
2524                 }
2525         } else if (addr && is_broadcast_ether_addr(addr)) {
2526                 struct nlattr *types;
2527
2528                 wpa_printf(MSG_DEBUG, "   broadcast key");
2529
2530                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2531                 if (!types ||
2532                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2533                         goto fail;
2534                 nla_nest_end(msg, types);
2535         }
2536         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2537                 goto fail;
2538
2539         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2540         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2541                 ret = 0;
2542         if (ret)
2543                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2544                            ret, strerror(-ret));
2545
2546         /*
2547          * If we failed or don't need to set the default TX key (below),
2548          * we're done here.
2549          */
2550         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2551                 return ret;
2552         if (is_ap_interface(drv->nlmode) && addr &&
2553             !is_broadcast_ether_addr(addr))
2554                 return ret;
2555
2556         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2557         if (!msg ||
2558             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2559             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2560                                alg == WPA_ALG_BIP_GMAC_128 ||
2561                                alg == WPA_ALG_BIP_GMAC_256 ||
2562                                alg == WPA_ALG_BIP_CMAC_256) ?
2563                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2564                          NL80211_ATTR_KEY_DEFAULT))
2565                 goto fail;
2566         if (addr && is_broadcast_ether_addr(addr)) {
2567                 struct nlattr *types;
2568
2569                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2570                 if (!types ||
2571                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2572                         goto fail;
2573                 nla_nest_end(msg, types);
2574         } else if (addr) {
2575                 struct nlattr *types;
2576
2577                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2578                 if (!types ||
2579                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2580                         goto fail;
2581                 nla_nest_end(msg, types);
2582         }
2583
2584         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2585         if (ret == -ENOENT)
2586                 ret = 0;
2587         if (ret)
2588                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2589                            "err=%d %s)", ret, strerror(-ret));
2590         return ret;
2591
2592 fail:
2593         nl80211_nlmsg_clear(msg);
2594         nlmsg_free(msg);
2595         return -ENOBUFS;
2596 }
2597
2598
2599 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2600                       int key_idx, int defkey,
2601                       const u8 *seq, size_t seq_len,
2602                       const u8 *key, size_t key_len)
2603 {
2604         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2605         if (!key_attr)
2606                 return -1;
2607
2608         if (defkey && alg == WPA_ALG_IGTK) {
2609                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2610                         return -1;
2611         } else if (defkey) {
2612                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2613                         return -1;
2614         }
2615
2616         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2617             nla_put_u32(msg, NL80211_KEY_CIPHER,
2618                         wpa_alg_to_cipher_suite(alg, key_len)) ||
2619             (seq && seq_len &&
2620              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2621             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2622                 return -1;
2623
2624         nla_nest_end(msg, key_attr);
2625
2626         return 0;
2627 }
2628
2629
2630 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2631                                  struct nl_msg *msg)
2632 {
2633         int i, privacy = 0;
2634         struct nlattr *nl_keys, *nl_key;
2635
2636         for (i = 0; i < 4; i++) {
2637                 if (!params->wep_key[i])
2638                         continue;
2639                 privacy = 1;
2640                 break;
2641         }
2642         if (params->wps == WPS_MODE_PRIVACY)
2643                 privacy = 1;
2644         if (params->pairwise_suite &&
2645             params->pairwise_suite != WPA_CIPHER_NONE)
2646                 privacy = 1;
2647
2648         if (!privacy)
2649                 return 0;
2650
2651         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2652                 return -ENOBUFS;
2653
2654         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2655         if (!nl_keys)
2656                 return -ENOBUFS;
2657
2658         for (i = 0; i < 4; i++) {
2659                 if (!params->wep_key[i])
2660                         continue;
2661
2662                 nl_key = nla_nest_start(msg, i);
2663                 if (!nl_key ||
2664                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2665                             params->wep_key[i]) ||
2666                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2667                                 params->wep_key_len[i] == 5 ?
2668                                 WLAN_CIPHER_SUITE_WEP40 :
2669                                 WLAN_CIPHER_SUITE_WEP104) ||
2670                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2671                     (i == params->wep_tx_keyidx &&
2672                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2673                         return -ENOBUFS;
2674
2675                 nla_nest_end(msg, nl_key);
2676         }
2677         nla_nest_end(msg, nl_keys);
2678
2679         return 0;
2680 }
2681
2682
2683 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2684                             const u8 *addr, int cmd, u16 reason_code,
2685                             int local_state_change)
2686 {
2687         int ret;
2688         struct nl_msg *msg;
2689
2690         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2691             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2692             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2693             (local_state_change &&
2694              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2695                 nlmsg_free(msg);
2696                 return -1;
2697         }
2698
2699         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2700         if (ret) {
2701                 wpa_dbg(drv->ctx, MSG_DEBUG,
2702                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2703                         reason_code, ret, strerror(-ret));
2704         }
2705         return ret;
2706 }
2707
2708
2709 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2710                                          int reason_code)
2711 {
2712         int ret;
2713
2714         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2715         nl80211_mark_disconnected(drv);
2716         /* Disconnect command doesn't need BSSID - it uses cached value */
2717         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2718                                       reason_code, 0);
2719         /*
2720          * For locally generated disconnect, supplicant already generates a
2721          * DEAUTH event, so ignore the event from NL80211.
2722          */
2723         drv->ignore_next_local_disconnect = ret == 0;
2724
2725         return ret;
2726 }
2727
2728
2729 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2730                                              const u8 *addr, int reason_code)
2731 {
2732         struct wpa_driver_nl80211_data *drv = bss->drv;
2733         int ret;
2734
2735         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2736                 nl80211_mark_disconnected(drv);
2737                 return nl80211_leave_ibss(drv, 1);
2738         }
2739         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2740                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2741         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2742                    __func__, MAC2STR(addr), reason_code);
2743         nl80211_mark_disconnected(drv);
2744         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2745                                       reason_code, 0);
2746         /*
2747          * For locally generated deauthenticate, supplicant already generates a
2748          * DEAUTH event, so ignore the event from NL80211.
2749          */
2750         drv->ignore_next_local_deauth = ret == 0;
2751         return ret;
2752 }
2753
2754
2755 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2756                                      struct wpa_driver_auth_params *params)
2757 {
2758         int i;
2759
2760         drv->auth_freq = params->freq;
2761         drv->auth_alg = params->auth_alg;
2762         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2763         drv->auth_local_state_change = params->local_state_change;
2764         drv->auth_p2p = params->p2p;
2765
2766         if (params->bssid)
2767                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2768         else
2769                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2770
2771         if (params->ssid) {
2772                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2773                 drv->auth_ssid_len = params->ssid_len;
2774         } else
2775                 drv->auth_ssid_len = 0;
2776
2777
2778         os_free(drv->auth_ie);
2779         drv->auth_ie = NULL;
2780         drv->auth_ie_len = 0;
2781         if (params->ie) {
2782                 drv->auth_ie = os_malloc(params->ie_len);
2783                 if (drv->auth_ie) {
2784                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2785                         drv->auth_ie_len = params->ie_len;
2786                 }
2787         }
2788
2789         for (i = 0; i < 4; i++) {
2790                 if (params->wep_key[i] && params->wep_key_len[i] &&
2791                     params->wep_key_len[i] <= 16) {
2792                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2793                                   params->wep_key_len[i]);
2794                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2795                 } else
2796                         drv->auth_wep_key_len[i] = 0;
2797         }
2798 }
2799
2800
2801 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2802 {
2803         struct wpa_driver_nl80211_data *drv = bss->drv;
2804
2805         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2806                 return;
2807
2808         /*
2809          * Looks like we failed to unmask 11b rates previously. This could
2810          * happen, e.g., if the interface was down at the point in time when a
2811          * P2P group was terminated.
2812          */
2813         wpa_printf(MSG_DEBUG,
2814                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2815                    bss->ifname);
2816         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2817 }
2818
2819
2820 static int wpa_driver_nl80211_authenticate(
2821         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2822 {
2823         struct wpa_driver_nl80211_data *drv = bss->drv;
2824         int ret = -1, i;
2825         struct nl_msg *msg;
2826         enum nl80211_auth_type type;
2827         enum nl80211_iftype nlmode;
2828         int count = 0;
2829         int is_retry;
2830
2831         nl80211_unmask_11b_rates(bss);
2832
2833         is_retry = drv->retry_auth;
2834         drv->retry_auth = 0;
2835         drv->ignore_deauth_event = 0;
2836
2837         nl80211_mark_disconnected(drv);
2838         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2839         if (params->bssid)
2840                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2841         else
2842                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2843         /* FIX: IBSS mode */
2844         nlmode = params->p2p ?
2845                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2846         if (drv->nlmode != nlmode &&
2847             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2848                 return -1;
2849
2850 retry:
2851         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2852                    drv->ifindex);
2853
2854         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2855         if (!msg)
2856                 goto fail;
2857
2858         for (i = 0; i < 4; i++) {
2859                 if (!params->wep_key[i])
2860                         continue;
2861                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2862                                            NULL, i,
2863                                            i == params->wep_tx_keyidx, NULL, 0,
2864                                            params->wep_key[i],
2865                                            params->wep_key_len[i]);
2866                 if (params->wep_tx_keyidx != i)
2867                         continue;
2868                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2869                                params->wep_key[i], params->wep_key_len[i]))
2870                         goto fail;
2871         }
2872
2873         if (params->bssid) {
2874                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2875                            MAC2STR(params->bssid));
2876                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2877                         goto fail;
2878         }
2879         if (params->freq) {
2880                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2881                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2882                         goto fail;
2883         }
2884         if (params->ssid) {
2885                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2886                                   params->ssid, params->ssid_len);
2887                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2888                             params->ssid))
2889                         goto fail;
2890         }
2891         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2892         if (params->ie &&
2893             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2894                 goto fail;
2895         if (params->sae_data) {
2896                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2897                             params->sae_data_len);
2898                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2899                             params->sae_data))
2900                         goto fail;
2901         }
2902         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2903                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2904         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2905                 type = NL80211_AUTHTYPE_SHARED_KEY;
2906         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2907                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2908         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2909                 type = NL80211_AUTHTYPE_FT;
2910         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2911                 type = NL80211_AUTHTYPE_SAE;
2912         else
2913                 goto fail;
2914         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2915         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2916                 goto fail;
2917         if (params->local_state_change) {
2918                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2919                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2920                         goto fail;
2921         }
2922
2923         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2924         msg = NULL;
2925         if (ret) {
2926                 wpa_dbg(drv->ctx, MSG_DEBUG,
2927                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2928                         ret, strerror(-ret));
2929                 count++;
2930                 if (ret == -EALREADY && count == 1 && params->bssid &&
2931                     !params->local_state_change) {
2932                         /*
2933                          * mac80211 does not currently accept new
2934                          * authentication if we are already authenticated. As a
2935                          * workaround, force deauthentication and try again.
2936                          */
2937                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2938                                    "after forced deauthentication");
2939                         drv->ignore_deauth_event = 1;
2940                         wpa_driver_nl80211_deauthenticate(
2941                                 bss, params->bssid,
2942                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2943                         nlmsg_free(msg);
2944                         goto retry;
2945                 }
2946
2947                 if (ret == -ENOENT && params->freq && !is_retry) {
2948                         /*
2949                          * cfg80211 has likely expired the BSS entry even
2950                          * though it was previously available in our internal
2951                          * BSS table. To recover quickly, start a single
2952                          * channel scan on the specified channel.
2953                          */
2954                         struct wpa_driver_scan_params scan;
2955                         int freqs[2];
2956
2957                         os_memset(&scan, 0, sizeof(scan));
2958                         scan.num_ssids = 1;
2959                         if (params->ssid) {
2960                                 scan.ssids[0].ssid = params->ssid;
2961                                 scan.ssids[0].ssid_len = params->ssid_len;
2962                         }
2963                         freqs[0] = params->freq;
2964                         freqs[1] = 0;
2965                         scan.freqs = freqs;
2966                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
2967                                    "channel scan to refresh cfg80211 BSS "
2968                                    "entry");
2969                         ret = wpa_driver_nl80211_scan(bss, &scan);
2970                         if (ret == 0) {
2971                                 nl80211_copy_auth_params(drv, params);
2972                                 drv->scan_for_auth = 1;
2973                         }
2974                 } else if (is_retry) {
2975                         /*
2976                          * Need to indicate this with an event since the return
2977                          * value from the retry is not delivered to core code.
2978                          */
2979                         union wpa_event_data event;
2980                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
2981                                    "failed");
2982                         os_memset(&event, 0, sizeof(event));
2983                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
2984                                   ETH_ALEN);
2985                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
2986                                              &event);
2987                 }
2988         } else {
2989                 wpa_printf(MSG_DEBUG,
2990                            "nl80211: Authentication request send successfully");
2991         }
2992
2993 fail:
2994         nlmsg_free(msg);
2995         return ret;
2996 }
2997
2998
2999 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3000 {
3001         struct wpa_driver_auth_params params;
3002         struct i802_bss *bss = drv->first_bss;
3003         int i;
3004
3005         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3006
3007         os_memset(&params, 0, sizeof(params));
3008         params.freq = drv->auth_freq;
3009         params.auth_alg = drv->auth_alg;
3010         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3011         params.local_state_change = drv->auth_local_state_change;
3012         params.p2p = drv->auth_p2p;
3013
3014         if (!is_zero_ether_addr(drv->auth_bssid_))
3015                 params.bssid = drv->auth_bssid_;
3016
3017         if (drv->auth_ssid_len) {
3018                 params.ssid = drv->auth_ssid;
3019                 params.ssid_len = drv->auth_ssid_len;
3020         }
3021
3022         params.ie = drv->auth_ie;
3023         params.ie_len = drv->auth_ie_len;
3024
3025         for (i = 0; i < 4; i++) {
3026                 if (drv->auth_wep_key_len[i]) {
3027                         params.wep_key[i] = drv->auth_wep_key[i];
3028                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3029                 }
3030         }
3031
3032         drv->retry_auth = 1;
3033         return wpa_driver_nl80211_authenticate(bss, &params);
3034 }
3035
3036
3037 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3038                                          const void *data, size_t len,
3039                                          int encrypt, int noack,
3040                                          unsigned int freq, int no_cck,
3041                                          int offchanok, unsigned int wait_time)
3042 {
3043         struct wpa_driver_nl80211_data *drv = bss->drv;
3044         u64 cookie;
3045         int res;
3046
3047         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3048                 freq = nl80211_get_assoc_freq(drv);
3049                 wpa_printf(MSG_DEBUG,
3050                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3051                            freq);
3052         }
3053         if (freq == 0) {
3054                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3055                            bss->freq);
3056                 freq = bss->freq;
3057         }
3058
3059         if (drv->use_monitor) {
3060                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3061                            freq, bss->freq);
3062                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3063         }
3064
3065         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3066         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3067                                      &cookie, no_cck, noack, offchanok);
3068         if (res == 0 && !noack) {
3069                 const struct ieee80211_mgmt *mgmt;
3070                 u16 fc;
3071
3072                 mgmt = (const struct ieee80211_mgmt *) data;
3073                 fc = le_to_host16(mgmt->frame_control);
3074                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3075                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3076                         wpa_printf(MSG_MSGDUMP,
3077                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3078                                    (long long unsigned int)
3079                                    drv->send_action_cookie,
3080                                    (long long unsigned int) cookie);
3081                         drv->send_action_cookie = cookie;
3082                 }
3083         }
3084
3085         return res;
3086 }
3087
3088
3089 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3090                                         size_t data_len, int noack,
3091                                         unsigned int freq, int no_cck,
3092                                         int offchanok,
3093                                         unsigned int wait_time)
3094 {
3095         struct wpa_driver_nl80211_data *drv = bss->drv;
3096         struct ieee80211_mgmt *mgmt;
3097         int encrypt = 1;
3098         u16 fc;
3099
3100         mgmt = (struct ieee80211_mgmt *) data;
3101         fc = le_to_host16(mgmt->frame_control);
3102         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3103                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3104                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3105                    fc, fc2str(fc), drv->nlmode);
3106
3107         if ((is_sta_interface(drv->nlmode) ||
3108              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3109             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3110             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3111                 /*
3112                  * The use of last_mgmt_freq is a bit of a hack,
3113                  * but it works due to the single-threaded nature
3114                  * of wpa_supplicant.
3115                  */
3116                 if (freq == 0) {
3117                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3118                                    drv->last_mgmt_freq);
3119                         freq = drv->last_mgmt_freq;
3120                 }
3121                 return nl80211_send_frame_cmd(bss, freq, 0,
3122                                               data, data_len, NULL, 1, noack,
3123                                               1);
3124         }
3125
3126         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3127                 if (freq == 0) {
3128                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3129                                    bss->freq);
3130                         freq = bss->freq;
3131                 }
3132                 return nl80211_send_frame_cmd(bss, freq,
3133                                               (int) freq == bss->freq ? 0 :
3134                                               wait_time,
3135                                               data, data_len,
3136                                               &drv->send_action_cookie,
3137                                               no_cck, noack, offchanok);
3138         }
3139
3140         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3141             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3142                 /*
3143                  * Only one of the authentication frame types is encrypted.
3144                  * In order for static WEP encryption to work properly (i.e.,
3145                  * to not encrypt the frame), we need to tell mac80211 about
3146                  * the frames that must not be encrypted.
3147                  */
3148                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3149                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3150                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3151                         encrypt = 0;
3152         }
3153
3154         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3155         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3156                                              noack, freq, no_cck, offchanok,
3157                                              wait_time);
3158 }
3159
3160
3161 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3162 {
3163         u8 rates[NL80211_MAX_SUPP_RATES];
3164         u8 rates_len = 0;
3165         int i;
3166
3167         if (!basic_rates)
3168                 return 0;
3169
3170         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3171                 rates[rates_len++] = basic_rates[i] / 5;
3172
3173         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3174 }
3175
3176
3177 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3178                            int slot, int ht_opmode, int ap_isolate,
3179                            const int *basic_rates)
3180 {
3181         struct wpa_driver_nl80211_data *drv = bss->drv;
3182         struct nl_msg *msg;
3183
3184         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3185             (cts >= 0 &&
3186              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3187             (preamble >= 0 &&
3188              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3189             (slot >= 0 &&
3190              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3191             (ht_opmode >= 0 &&
3192              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3193             (ap_isolate >= 0 &&
3194              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3195             nl80211_put_basic_rates(msg, basic_rates)) {
3196                 nlmsg_free(msg);
3197                 return -ENOBUFS;
3198         }
3199
3200         return send_and_recv_msgs(drv, msg, NULL, NULL);
3201 }
3202
3203
3204 static int wpa_driver_nl80211_set_acl(void *priv,
3205                                       struct hostapd_acl_params *params)
3206 {
3207         struct i802_bss *bss = priv;
3208         struct wpa_driver_nl80211_data *drv = bss->drv;
3209         struct nl_msg *msg;
3210         struct nlattr *acl;
3211         unsigned int i;
3212         int ret;
3213
3214         if (!(drv->capa.max_acl_mac_addrs))
3215                 return -ENOTSUP;
3216
3217         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3218                 return -ENOTSUP;
3219
3220         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3221                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3222
3223         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3224             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3225                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3226                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3227             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3228                 nlmsg_free(msg);
3229                 return -ENOMEM;
3230         }
3231
3232         for (i = 0; i < params->num_mac_acl; i++) {
3233                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3234                         nlmsg_free(msg);
3235                         return -ENOMEM;
3236                 }
3237         }
3238
3239         nla_nest_end(msg, acl);
3240
3241         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3242         if (ret) {
3243                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3244                            ret, strerror(-ret));
3245         }
3246
3247         return ret;
3248 }
3249
3250
3251 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3252 {
3253         if (beacon_int > 0) {
3254                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3255                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3256                                    beacon_int);
3257         }
3258
3259         return 0;
3260 }
3261
3262
3263 static int wpa_driver_nl80211_set_ap(void *priv,
3264                                      struct wpa_driver_ap_params *params)
3265 {
3266         struct i802_bss *bss = priv;
3267         struct wpa_driver_nl80211_data *drv = bss->drv;
3268         struct nl_msg *msg;
3269         u8 cmd = NL80211_CMD_NEW_BEACON;
3270         int ret;
3271         int beacon_set;
3272         int num_suites;
3273         int smps_mode;
3274         u32 suites[10], suite;
3275         u32 ver;
3276
3277         beacon_set = params->reenable ? 0 : bss->beacon_set;
3278
3279         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3280                    beacon_set);
3281         if (beacon_set)
3282                 cmd = NL80211_CMD_SET_BEACON;
3283
3284         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3285                     params->head, params->head_len);
3286         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3287                     params->tail, params->tail_len);
3288         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3289         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3290         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3291         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3292                           params->ssid, params->ssid_len);
3293         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3294             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3295                     params->head) ||
3296             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3297                     params->tail) ||
3298             nl80211_put_beacon_int(msg, params->beacon_int) ||
3299             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3300             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3301                 goto fail;
3302         if (params->proberesp && params->proberesp_len) {
3303                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3304                             params->proberesp, params->proberesp_len);
3305                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3306                             params->proberesp))
3307                         goto fail;
3308         }
3309         switch (params->hide_ssid) {
3310         case NO_SSID_HIDING:
3311                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3312                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3313                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3314                         goto fail;
3315                 break;
3316         case HIDDEN_SSID_ZERO_LEN:
3317                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3318                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3319                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3320                         goto fail;
3321                 break;
3322         case HIDDEN_SSID_ZERO_CONTENTS:
3323                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3324                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3325                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3326                         goto fail;
3327                 break;
3328         }
3329         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3330         if (params->privacy &&
3331             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3332                 goto fail;
3333         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3334         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3335             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3336                 /* Leave out the attribute */
3337         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3338                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3339                                 NL80211_AUTHTYPE_SHARED_KEY))
3340                         goto fail;
3341         } else {
3342                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3343                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3344                         goto fail;
3345         }
3346
3347         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3348         ver = 0;
3349         if (params->wpa_version & WPA_PROTO_WPA)
3350                 ver |= NL80211_WPA_VERSION_1;
3351         if (params->wpa_version & WPA_PROTO_RSN)
3352                 ver |= NL80211_WPA_VERSION_2;
3353         if (ver &&
3354             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3355                 goto fail;
3356
3357         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3358                    params->key_mgmt_suites);
3359         num_suites = 0;
3360         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3361                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3362         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3363                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3364         if (num_suites &&
3365             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3366                     suites))
3367                 goto fail;
3368
3369         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3370             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3371             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3372                 goto fail;
3373
3374         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3375                    params->pairwise_ciphers);
3376         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3377                                                  suites, ARRAY_SIZE(suites));
3378         if (num_suites &&
3379             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3380                     num_suites * sizeof(u32), suites))
3381                 goto fail;
3382
3383         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3384                    params->group_cipher);
3385         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3386         if (suite &&
3387             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3388                 goto fail;
3389
3390         switch (params->smps_mode) {
3391         case HT_CAP_INFO_SMPS_DYNAMIC:
3392                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3393                 smps_mode = NL80211_SMPS_DYNAMIC;
3394                 break;
3395         case HT_CAP_INFO_SMPS_STATIC:
3396                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3397                 smps_mode = NL80211_SMPS_STATIC;
3398                 break;
3399         default:
3400                 /* invalid - fallback to smps off */
3401         case HT_CAP_INFO_SMPS_DISABLED:
3402                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3403                 smps_mode = NL80211_SMPS_OFF;
3404                 break;
3405         }
3406         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3407                 goto fail;
3408
3409         if (params->beacon_ies) {
3410                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3411                                 params->beacon_ies);
3412                 if (nla_put(msg, NL80211_ATTR_IE,
3413                             wpabuf_len(params->beacon_ies),
3414                             wpabuf_head(params->beacon_ies)))
3415                         goto fail;
3416         }
3417         if (params->proberesp_ies) {
3418                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3419                                 params->proberesp_ies);
3420                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3421                             wpabuf_len(params->proberesp_ies),
3422                             wpabuf_head(params->proberesp_ies)))
3423                         goto fail;
3424         }
3425         if (params->assocresp_ies) {
3426                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3427                                 params->assocresp_ies);
3428                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3429                             wpabuf_len(params->assocresp_ies),
3430                             wpabuf_head(params->assocresp_ies)))
3431                         goto fail;
3432         }
3433
3434         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3435                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3436                            params->ap_max_inactivity);
3437                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3438                                 params->ap_max_inactivity))
3439                         goto fail;
3440         }
3441
3442         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3443         if (ret) {
3444                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3445                            ret, strerror(-ret));
3446         } else {
3447                 bss->beacon_set = 1;
3448                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3449                                 params->short_slot_time, params->ht_opmode,
3450                                 params->isolate, params->basic_rates);
3451                 if (beacon_set && params->freq &&
3452                     params->freq->bandwidth != bss->bandwidth) {
3453                         wpa_printf(MSG_DEBUG,
3454                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3455                                    bss->ifname, bss->bandwidth,
3456                                    params->freq->bandwidth);
3457                         ret = nl80211_set_channel(bss, params->freq, 1);
3458                         if (ret) {
3459                                 wpa_printf(MSG_DEBUG,
3460                                            "nl80211: Frequency set failed: %d (%s)",
3461                                            ret, strerror(-ret));
3462                         } else {
3463                                 wpa_printf(MSG_DEBUG,
3464                                            "nl80211: Frequency set succeeded for ht2040 coex");
3465                                 bss->bandwidth = params->freq->bandwidth;
3466                         }
3467                 } else if (!beacon_set) {
3468                         /*
3469                          * cfg80211 updates the driver on frequence change in AP
3470                          * mode only at the point when beaconing is started, so
3471                          * set the initial value here.
3472                          */
3473                         bss->bandwidth = params->freq->bandwidth;
3474                 }
3475         }
3476         return ret;
3477 fail:
3478         nlmsg_free(msg);
3479         return -ENOBUFS;
3480 }
3481
3482
3483 static int nl80211_put_freq_params(struct nl_msg *msg,
3484                                    const struct hostapd_freq_params *freq)
3485 {
3486         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3487         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3488                 return -ENOBUFS;
3489
3490         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3491         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3492
3493         if (freq->vht_enabled) {
3494                 enum nl80211_chan_width cw;
3495
3496                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3497                 switch (freq->bandwidth) {
3498                 case 20:
3499                         cw = NL80211_CHAN_WIDTH_20;
3500                         break;
3501                 case 40:
3502                         cw = NL80211_CHAN_WIDTH_40;
3503                         break;
3504                 case 80:
3505                         if (freq->center_freq2)
3506                                 cw = NL80211_CHAN_WIDTH_80P80;
3507                         else
3508                                 cw = NL80211_CHAN_WIDTH_80;
3509                         break;
3510                 case 160:
3511                         cw = NL80211_CHAN_WIDTH_160;
3512                         break;
3513                 default:
3514                         return -EINVAL;
3515                 }
3516
3517                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3518                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3519                            freq->center_freq1);
3520                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3521                            freq->center_freq2);
3522                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3523                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3524                                 freq->center_freq1) ||
3525                     (freq->center_freq2 &&
3526                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3527                                  freq->center_freq2)))
3528                         return -ENOBUFS;
3529         } else if (freq->ht_enabled) {
3530                 enum nl80211_channel_type ct;
3531
3532                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3533                            freq->sec_channel_offset);
3534                 switch (freq->sec_channel_offset) {
3535                 case -1:
3536                         ct = NL80211_CHAN_HT40MINUS;
3537                         break;
3538                 case 1:
3539                         ct = NL80211_CHAN_HT40PLUS;
3540                         break;
3541                 default:
3542                         ct = NL80211_CHAN_HT20;
3543                         break;
3544                 }
3545
3546                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3547                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3548                         return -ENOBUFS;
3549         }
3550         return 0;
3551 }
3552
3553
3554 static int nl80211_set_channel(struct i802_bss *bss,
3555                                struct hostapd_freq_params *freq, int set_chan)
3556 {
3557         struct wpa_driver_nl80211_data *drv = bss->drv;
3558         struct nl_msg *msg;
3559         int ret;
3560
3561         wpa_printf(MSG_DEBUG,
3562                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3563                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3564                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3565
3566         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3567                               NL80211_CMD_SET_WIPHY);
3568         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3569                 nlmsg_free(msg);
3570                 return -1;
3571         }
3572
3573         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3574         if (ret == 0) {
3575                 bss->freq = freq->freq;
3576                 return 0;
3577         }
3578         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3579                    "%d (%s)", freq->freq, ret, strerror(-ret));
3580         return -1;
3581 }
3582
3583
3584 static u32 sta_flags_nl80211(int flags)
3585 {
3586         u32 f = 0;
3587
3588         if (flags & WPA_STA_AUTHORIZED)
3589                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3590         if (flags & WPA_STA_WMM)
3591                 f |= BIT(NL80211_STA_FLAG_WME);
3592         if (flags & WPA_STA_SHORT_PREAMBLE)
3593                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3594         if (flags & WPA_STA_MFP)
3595                 f |= BIT(NL80211_STA_FLAG_MFP);
3596         if (flags & WPA_STA_TDLS_PEER)
3597                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3598         if (flags & WPA_STA_AUTHENTICATED)
3599                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3600
3601         return f;
3602 }
3603
3604
3605 #ifdef CONFIG_MESH
3606 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3607 {
3608         switch (state) {
3609         case PLINK_LISTEN:
3610                 return NL80211_PLINK_LISTEN;
3611         case PLINK_OPEN_SENT:
3612                 return NL80211_PLINK_OPN_SNT;
3613         case PLINK_OPEN_RCVD:
3614                 return NL80211_PLINK_OPN_RCVD;
3615         case PLINK_CNF_RCVD:
3616                 return NL80211_PLINK_CNF_RCVD;
3617         case PLINK_ESTAB:
3618                 return NL80211_PLINK_ESTAB;
3619         case PLINK_HOLDING:
3620                 return NL80211_PLINK_HOLDING;
3621         case PLINK_BLOCKED:
3622                 return NL80211_PLINK_BLOCKED;
3623         default:
3624                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3625                            state);
3626         }
3627         return -1;
3628 }
3629 #endif /* CONFIG_MESH */
3630
3631
3632 static int wpa_driver_nl80211_sta_add(void *priv,
3633                                       struct hostapd_sta_add_params *params)
3634 {
3635         struct i802_bss *bss = priv;
3636         struct wpa_driver_nl80211_data *drv = bss->drv;
3637         struct nl_msg *msg;
3638         struct nl80211_sta_flag_update upd;
3639         int ret = -ENOBUFS;
3640
3641         if ((params->flags & WPA_STA_TDLS_PEER) &&
3642             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3643                 return -EOPNOTSUPP;
3644
3645         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3646                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3647         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3648                               NL80211_CMD_NEW_STATION);
3649         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3650                 goto fail;
3651
3652         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3653                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3654                             params->supp_rates, params->supp_rates_len);
3655                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3656                            params->capability);
3657                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3658                             params->supp_rates_len, params->supp_rates) ||
3659                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3660                                 params->capability))
3661                         goto fail;
3662
3663                 if (params->ht_capabilities) {
3664                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3665                                     (u8 *) params->ht_capabilities,
3666                                     sizeof(*params->ht_capabilities));
3667                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3668                                     sizeof(*params->ht_capabilities),
3669                                     params->ht_capabilities))
3670                                 goto fail;
3671                 }
3672
3673                 if (params->vht_capabilities) {
3674                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3675                                     (u8 *) params->vht_capabilities,
3676                                     sizeof(*params->vht_capabilities));
3677                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3678                                     sizeof(*params->vht_capabilities),
3679                                     params->vht_capabilities))
3680                                 goto fail;
3681                 }
3682
3683                 if (params->ext_capab) {
3684                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3685                                     params->ext_capab, params->ext_capab_len);
3686                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3687                                     params->ext_capab_len, params->ext_capab))
3688                                 goto fail;
3689                 }
3690         }
3691         if (!params->set) {
3692                 if (params->aid) {
3693                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3694                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3695                                 goto fail;
3696                 } else {
3697                         /*
3698                          * cfg80211 validates that AID is non-zero, so we have
3699                          * to make this a non-zero value for the TDLS case where
3700                          * a dummy STA entry is used for now.
3701                          */
3702                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3703                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3704                                 goto fail;
3705                 }
3706                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3707                            params->listen_interval);
3708                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3709                                 params->listen_interval))
3710                         goto fail;
3711         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3712                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3713                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3714                         goto fail;
3715         }
3716
3717         if (params->vht_opmode_enabled) {
3718                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3719                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3720                                params->vht_opmode))
3721                         goto fail;
3722         }
3723
3724         if (params->supp_channels) {
3725                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3726                             params->supp_channels, params->supp_channels_len);
3727                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3728                             params->supp_channels_len, params->supp_channels))
3729                         goto fail;
3730         }
3731
3732         if (params->supp_oper_classes) {
3733                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3734                             params->supp_oper_classes,
3735                             params->supp_oper_classes_len);
3736                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3737                             params->supp_oper_classes_len,
3738                             params->supp_oper_classes))
3739                         goto fail;
3740         }
3741
3742         os_memset(&upd, 0, sizeof(upd));
3743         upd.set = sta_flags_nl80211(params->flags);
3744         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3745         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3746                    upd.set, upd.mask);
3747         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3748                 goto fail;
3749
3750 #ifdef CONFIG_MESH
3751         if (params->plink_state &&
3752             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3753                        sta_plink_state_nl80211(params->plink_state)))
3754                 goto fail;
3755 #endif /* CONFIG_MESH */
3756
3757         if (params->flags & WPA_STA_WMM) {
3758                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3759
3760                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3761                 if (!wme ||
3762                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3763                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3764                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3765                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3766                                WMM_QOSINFO_STA_SP_MASK))
3767                         goto fail;
3768                 nla_nest_end(msg, wme);
3769         }
3770
3771         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3772         msg = NULL;
3773         if (ret)
3774                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3775                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3776                            strerror(-ret));
3777         if (ret == -EEXIST)
3778                 ret = 0;
3779 fail:
3780         nlmsg_free(msg);
3781         return ret;
3782 }
3783
3784
3785 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3786 {
3787 #ifdef CONFIG_LIBNL3_ROUTE
3788         struct wpa_driver_nl80211_data *drv = bss->drv;
3789         struct rtnl_neigh *rn;
3790         struct nl_addr *nl_addr;
3791         int err;
3792
3793         rn = rtnl_neigh_alloc();
3794         if (!rn)
3795                 return;
3796
3797         rtnl_neigh_set_family(rn, AF_BRIDGE);
3798         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3799         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3800         if (!nl_addr) {
3801                 rtnl_neigh_put(rn);
3802                 return;
3803         }
3804         rtnl_neigh_set_lladdr(rn, nl_addr);
3805
3806         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3807         if (err < 0) {
3808                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3809                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3810                            bss->ifindex, nl_geterror(err));
3811         } else {
3812                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3813                            MACSTR, MAC2STR(addr));
3814         }
3815
3816         nl_addr_put(nl_addr);
3817         rtnl_neigh_put(rn);
3818 #endif /* CONFIG_LIBNL3_ROUTE */
3819 }
3820
3821
3822 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3823                                          int deauth, u16 reason_code)
3824 {
3825         struct wpa_driver_nl80211_data *drv = bss->drv;
3826         struct nl_msg *msg;
3827         int ret;
3828
3829         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3830             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3831             (deauth == 0 &&
3832              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3833                         WLAN_FC_STYPE_DISASSOC)) ||
3834             (deauth == 1 &&
3835              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3836                         WLAN_FC_STYPE_DEAUTH)) ||
3837             (reason_code &&
3838              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3839                 nlmsg_free(msg);
3840                 return -ENOBUFS;
3841         }
3842
3843         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3844         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3845                    " --> %d (%s)",
3846                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3847
3848         if (drv->rtnl_sk)
3849                 rtnl_neigh_delete_fdb_entry(bss, addr);
3850
3851         if (ret == -ENOENT)
3852                 return 0;
3853         return ret;
3854 }
3855
3856
3857 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3858 {
3859         struct nl_msg *msg;
3860         struct wpa_driver_nl80211_data *drv2;
3861
3862         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3863
3864         /* stop listening for EAPOL on this interface */
3865         dl_list_for_each(drv2, &drv->global->interfaces,
3866                          struct wpa_driver_nl80211_data, list)
3867                 del_ifidx(drv2, ifidx);
3868
3869         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3870         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3871                 return;
3872         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3873 }
3874
3875
3876 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3877 {
3878         switch (mode) {
3879         case NL80211_IFTYPE_ADHOC:
3880                 return "ADHOC";
3881         case NL80211_IFTYPE_STATION:
3882                 return "STATION";
3883         case NL80211_IFTYPE_AP:
3884                 return "AP";
3885         case NL80211_IFTYPE_AP_VLAN:
3886                 return "AP_VLAN";
3887         case NL80211_IFTYPE_WDS:
3888                 return "WDS";
3889         case NL80211_IFTYPE_MONITOR:
3890                 return "MONITOR";
3891         case NL80211_IFTYPE_MESH_POINT:
3892                 return "MESH_POINT";
3893         case NL80211_IFTYPE_P2P_CLIENT:
3894                 return "P2P_CLIENT";
3895         case NL80211_IFTYPE_P2P_GO:
3896                 return "P2P_GO";
3897         case NL80211_IFTYPE_P2P_DEVICE:
3898                 return "P2P_DEVICE";
3899         default:
3900                 return "unknown";
3901         }
3902 }
3903
3904
3905 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3906                                      const char *ifname,
3907                                      enum nl80211_iftype iftype,
3908                                      const u8 *addr, int wds,
3909                                      int (*handler)(struct nl_msg *, void *),
3910                                      void *arg)
3911 {
3912         struct nl_msg *msg;
3913         int ifidx;
3914         int ret = -ENOBUFS;
3915
3916         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3917                    iftype, nl80211_iftype_str(iftype));
3918
3919         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3920         if (!msg ||
3921             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3922             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3923                 goto fail;
3924
3925         if (iftype == NL80211_IFTYPE_MONITOR) {
3926                 struct nlattr *flags;
3927
3928                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3929                 if (!flags ||
3930                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3931                         goto fail;
3932
3933                 nla_nest_end(msg, flags);
3934         } else if (wds) {
3935                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
3936                         goto fail;
3937         }
3938
3939         /*
3940          * Tell cfg80211 that the interface belongs to the socket that created
3941          * it, and the interface should be deleted when the socket is closed.
3942          */
3943         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
3944                 goto fail;
3945
3946         ret = send_and_recv_msgs(drv, msg, handler, arg);
3947         msg = NULL;
3948         if (ret) {
3949         fail:
3950                 nlmsg_free(msg);
3951                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3952                            ifname, ret, strerror(-ret));
3953                 return ret;
3954         }
3955
3956         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
3957                 return 0;
3958
3959         ifidx = if_nametoindex(ifname);
3960         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3961                    ifname, ifidx);
3962
3963         if (ifidx <= 0)
3964                 return -1;
3965
3966         /*
3967          * Some virtual interfaces need to process EAPOL packets and events on
3968          * the parent interface. This is used mainly with hostapd.
3969          */
3970         if (drv->hostapd ||
3971             iftype == NL80211_IFTYPE_AP_VLAN ||
3972             iftype == NL80211_IFTYPE_WDS ||
3973             iftype == NL80211_IFTYPE_MONITOR) {
3974                 /* start listening for EAPOL on this interface */
3975                 add_ifidx(drv, ifidx);
3976         }
3977
3978         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3979             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
3980                 nl80211_remove_iface(drv, ifidx);
3981                 return -1;
3982         }
3983
3984         return ifidx;
3985 }
3986
3987
3988 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3989                          const char *ifname, enum nl80211_iftype iftype,
3990                          const u8 *addr, int wds,
3991                          int (*handler)(struct nl_msg *, void *),
3992                          void *arg, int use_existing)
3993 {
3994         int ret;
3995
3996         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
3997                                         arg);
3998
3999         /* if error occurred and interface exists already */
4000         if (ret == -ENFILE && if_nametoindex(ifname)) {
4001                 if (use_existing) {
4002                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4003                                    ifname);
4004                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4005                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4006                                                addr) < 0 &&
4007                             (linux_set_iface_flags(drv->global->ioctl_sock,
4008                                                    ifname, 0) < 0 ||
4009                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4010                                                 addr) < 0 ||
4011                              linux_set_iface_flags(drv->global->ioctl_sock,
4012                                                    ifname, 1) < 0))
4013                                         return -1;
4014                         return -ENFILE;
4015                 }
4016                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4017
4018                 /* Try to remove the interface that was already there. */
4019                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4020
4021                 /* Try to create the interface again */
4022                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4023                                                 wds, handler, arg);
4024         }
4025
4026         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4027                 wpa_printf(MSG_DEBUG,
4028                            "nl80211: Interface %s created for P2P - disable 11b rates",
4029                            ifname);
4030                 nl80211_disable_11b_rates(drv, ret, 1);
4031         }
4032
4033         return ret;
4034 }
4035
4036
4037 static int nl80211_setup_ap(struct i802_bss *bss)
4038 {
4039         struct wpa_driver_nl80211_data *drv = bss->drv;
4040
4041         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4042                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4043
4044         /*
4045          * Disable Probe Request reporting unless we need it in this way for
4046          * devices that include the AP SME, in the other case (unless using
4047          * monitor iface) we'll get it through the nl_mgmt socket instead.
4048          */
4049         if (!drv->device_ap_sme)
4050                 wpa_driver_nl80211_probe_req_report(bss, 0);
4051
4052         if (!drv->device_ap_sme && !drv->use_monitor)
4053                 if (nl80211_mgmt_subscribe_ap(bss))
4054                         return -1;
4055
4056         if (drv->device_ap_sme && !drv->use_monitor)
4057                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4058                         return -1;
4059
4060         if (!drv->device_ap_sme && drv->use_monitor &&
4061             nl80211_create_monitor_interface(drv) &&
4062             !drv->device_ap_sme)
4063                 return -1;
4064
4065         if (drv->device_ap_sme &&
4066             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4067                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4068                            "Probe Request frame reporting in AP mode");
4069                 /* Try to survive without this */
4070         }
4071
4072         return 0;
4073 }
4074
4075
4076 static void nl80211_teardown_ap(struct i802_bss *bss)
4077 {
4078         struct wpa_driver_nl80211_data *drv = bss->drv;
4079
4080         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4081                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4082         if (drv->device_ap_sme) {
4083                 wpa_driver_nl80211_probe_req_report(bss, 0);
4084                 if (!drv->use_monitor)
4085                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4086         } else if (drv->use_monitor)
4087                 nl80211_remove_monitor_interface(drv);
4088         else
4089                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4090
4091         bss->beacon_set = 0;
4092 }
4093
4094
4095 static int nl80211_send_eapol_data(struct i802_bss *bss,
4096                                    const u8 *addr, const u8 *data,
4097                                    size_t data_len)
4098 {
4099         struct sockaddr_ll ll;
4100         int ret;
4101
4102         if (bss->drv->eapol_tx_sock < 0) {
4103                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4104                 return -1;
4105         }
4106
4107         os_memset(&ll, 0, sizeof(ll));
4108         ll.sll_family = AF_PACKET;
4109         ll.sll_ifindex = bss->ifindex;
4110         ll.sll_protocol = htons(ETH_P_PAE);
4111         ll.sll_halen = ETH_ALEN;
4112         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4113         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4114                      (struct sockaddr *) &ll, sizeof(ll));
4115         if (ret < 0)
4116                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4117                            strerror(errno));
4118
4119         return ret;
4120 }
4121
4122
4123 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4124
4125 static int wpa_driver_nl80211_hapd_send_eapol(
4126         void *priv, const u8 *addr, const u8 *data,
4127         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4128 {
4129         struct i802_bss *bss = priv;
4130         struct wpa_driver_nl80211_data *drv = bss->drv;
4131         struct ieee80211_hdr *hdr;
4132         size_t len;
4133         u8 *pos;
4134         int res;
4135         int qos = flags & WPA_STA_WMM;
4136
4137         if (drv->device_ap_sme || !drv->use_monitor)
4138                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4139
4140         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4141                 data_len;
4142         hdr = os_zalloc(len);
4143         if (hdr == NULL) {
4144                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4145                            (unsigned long) len);
4146                 return -1;
4147         }
4148
4149         hdr->frame_control =
4150                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4151         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4152         if (encrypt)
4153                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4154         if (qos) {
4155                 hdr->frame_control |=
4156                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4157         }
4158
4159         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4160         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4161         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4162         pos = (u8 *) (hdr + 1);
4163
4164         if (qos) {
4165                 /* Set highest priority in QoS header */
4166                 pos[0] = 7;
4167                 pos[1] = 0;
4168                 pos += 2;
4169         }
4170
4171         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4172         pos += sizeof(rfc1042_header);
4173         WPA_PUT_BE16(pos, ETH_P_PAE);
4174         pos += 2;
4175         memcpy(pos, data, data_len);
4176
4177         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4178                                             0, 0, 0, 0);
4179         if (res < 0) {
4180                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4181                            "failed: %d (%s)",
4182                            (unsigned long) len, errno, strerror(errno));
4183         }
4184         os_free(hdr);
4185
4186         return res;
4187 }
4188
4189
4190 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4191                                             int total_flags,
4192                                             int flags_or, int flags_and)
4193 {
4194         struct i802_bss *bss = priv;
4195         struct nl_msg *msg;
4196         struct nlattr *flags;
4197         struct nl80211_sta_flag_update upd;
4198
4199         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4200                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4201                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4202                    !!(total_flags & WPA_STA_AUTHORIZED));
4203
4204         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4205             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4206                 goto fail;
4207
4208         /*
4209          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4210          * can be removed eventually.
4211          */
4212         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4213         if (!flags ||
4214             ((total_flags & WPA_STA_AUTHORIZED) &&
4215              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4216             ((total_flags & WPA_STA_WMM) &&
4217              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4218             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4219              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4220             ((total_flags & WPA_STA_MFP) &&
4221              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4222             ((total_flags & WPA_STA_TDLS_PEER) &&
4223              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4224                 goto fail;
4225
4226         nla_nest_end(msg, flags);
4227
4228         os_memset(&upd, 0, sizeof(upd));
4229         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4230         upd.set = sta_flags_nl80211(flags_or);
4231         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4232                 goto fail;
4233
4234         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4235 fail:
4236         nlmsg_free(msg);
4237         return -ENOBUFS;
4238 }
4239
4240
4241 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4242                                  struct wpa_driver_associate_params *params)
4243 {
4244         enum nl80211_iftype nlmode, old_mode;
4245
4246         if (params->p2p) {
4247                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4248                            "group (GO)");
4249                 nlmode = NL80211_IFTYPE_P2P_GO;
4250         } else
4251                 nlmode = NL80211_IFTYPE_AP;
4252
4253         old_mode = drv->nlmode;
4254         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4255                 nl80211_remove_monitor_interface(drv);
4256                 return -1;
4257         }
4258
4259         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4260                 if (old_mode != nlmode)
4261                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4262                 nl80211_remove_monitor_interface(drv);
4263                 return -1;
4264         }
4265
4266         return 0;
4267 }
4268
4269
4270 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4271                               int reset_mode)
4272 {
4273         struct nl_msg *msg;
4274         int ret;
4275
4276         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4277         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4278         if (ret) {
4279                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4280                            "(%s)", ret, strerror(-ret));
4281         } else {
4282                 wpa_printf(MSG_DEBUG,
4283                            "nl80211: Leave IBSS request sent successfully");
4284         }
4285
4286         if (reset_mode &&
4287             wpa_driver_nl80211_set_mode(drv->first_bss,
4288                                         NL80211_IFTYPE_STATION)) {
4289                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4290                            "station mode");
4291         }
4292
4293         return ret;
4294 }
4295
4296
4297 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4298                                     struct wpa_driver_associate_params *params)
4299 {
4300         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4301                 return -1;
4302
4303         if (params->htcaps && params->htcaps_mask) {
4304                 int sz = sizeof(struct ieee80211_ht_capabilities);
4305                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4306                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4307                             params->htcaps_mask, sz);
4308                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4309                             params->htcaps) ||
4310                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4311                             params->htcaps_mask))
4312                         return -1;
4313         }
4314
4315 #ifdef CONFIG_VHT_OVERRIDES
4316         if (params->disable_vht) {
4317                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4318                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4319                         return -1;
4320         }
4321
4322         if (params->vhtcaps && params->vhtcaps_mask) {
4323                 int sz = sizeof(struct ieee80211_vht_capabilities);
4324                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4325                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4326                             params->vhtcaps_mask, sz);
4327                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4328                             params->vhtcaps) ||
4329                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4330                             params->vhtcaps_mask))
4331                         return -1;
4332         }
4333 #endif /* CONFIG_VHT_OVERRIDES */
4334
4335         return 0;
4336 }
4337
4338
4339 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4340                                    struct wpa_driver_associate_params *params)
4341 {
4342         struct nl_msg *msg;
4343         int ret = -1;
4344         int count = 0;
4345
4346         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4347
4348         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4349                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4350                            "IBSS mode");
4351                 return -1;
4352         }
4353
4354 retry:
4355         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4356             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4357                 goto fail;
4358
4359         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4360                           params->ssid, params->ssid_len);
4361         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4362                 goto fail;
4363         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4364         drv->ssid_len = params->ssid_len;
4365
4366         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4367             nl80211_put_beacon_int(msg, params->beacon_int))
4368                 goto fail;
4369
4370         ret = nl80211_set_conn_keys(params, msg);
4371         if (ret)
4372                 goto fail;
4373
4374         if (params->bssid && params->fixed_bssid) {
4375                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4376                            MAC2STR(params->bssid));
4377                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4378                         goto fail;
4379         }
4380
4381         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4382             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4383             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4384             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4385                 wpa_printf(MSG_DEBUG, "  * control port");
4386                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4387                         goto fail;
4388         }
4389
4390         if (params->wpa_ie) {
4391                 wpa_hexdump(MSG_DEBUG,
4392                             "  * Extra IEs for Beacon/Probe Response frames",
4393                             params->wpa_ie, params->wpa_ie_len);
4394                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4395                             params->wpa_ie))
4396                         goto fail;
4397         }
4398
4399         if (nl80211_ht_vht_overrides(msg, params) < 0)
4400                 return -1;
4401
4402         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4403         msg = NULL;
4404         if (ret) {
4405                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4406                            ret, strerror(-ret));
4407                 count++;
4408                 if (ret == -EALREADY && count == 1) {
4409                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4410                                    "forced leave");
4411                         nl80211_leave_ibss(drv, 0);
4412                         nlmsg_free(msg);
4413                         goto retry;
4414                 }
4415         } else {
4416                 wpa_printf(MSG_DEBUG,
4417                            "nl80211: Join IBSS request sent successfully");
4418         }
4419
4420 fail:
4421         nlmsg_free(msg);
4422         return ret;
4423 }
4424
4425
4426 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4427                                   struct wpa_driver_associate_params *params,
4428                                   struct nl_msg *msg)
4429 {
4430         if (params->bssid) {
4431                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4432                            MAC2STR(params->bssid));
4433                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4434                         return -1;
4435         }
4436
4437         if (params->bssid_hint) {
4438                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4439                            MAC2STR(params->bssid_hint));
4440                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4441                             params->bssid_hint))
4442                         return -1;
4443         }
4444
4445         if (params->freq.freq) {
4446                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4447                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4448                                 params->freq.freq))
4449                         return -1;
4450                 drv->assoc_freq = params->freq.freq;
4451         } else
4452                 drv->assoc_freq = 0;
4453
4454         if (params->freq_hint) {
4455                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4456                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4457                                 params->freq_hint))
4458                         return -1;
4459         }
4460
4461         if (params->bg_scan_period >= 0) {
4462                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4463                            params->bg_scan_period);
4464                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4465                                 params->bg_scan_period))
4466                         return -1;
4467         }
4468
4469         if (params->ssid) {
4470                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4471                                   params->ssid, params->ssid_len);
4472                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4473                             params->ssid))
4474                         return -1;
4475                 if (params->ssid_len > sizeof(drv->ssid))
4476                         return -1;
4477                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4478                 drv->ssid_len = params->ssid_len;
4479         }
4480
4481         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4482         if (params->wpa_ie &&
4483             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4484                 return -1;
4485
4486         if (params->wpa_proto) {
4487                 enum nl80211_wpa_versions ver = 0;
4488
4489                 if (params->wpa_proto & WPA_PROTO_WPA)
4490                         ver |= NL80211_WPA_VERSION_1;
4491                 if (params->wpa_proto & WPA_PROTO_RSN)
4492                         ver |= NL80211_WPA_VERSION_2;
4493
4494                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4495                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4496                         return -1;
4497         }
4498
4499         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4500                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4501                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4502                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4503                                 cipher))
4504                         return -1;
4505         }
4506
4507         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4508             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4509                 /*
4510                  * This is likely to work even though many drivers do not
4511                  * advertise support for operations without GTK.
4512                  */
4513                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4514         } else if (params->group_suite != WPA_CIPHER_NONE) {
4515                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4516                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4517                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4518                         return -1;
4519         }
4520
4521         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4522             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4523             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4524             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4525             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4526             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4527             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4528             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4529             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4530             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4531                 int mgmt = WLAN_AKM_SUITE_PSK;
4532
4533                 switch (params->key_mgmt_suite) {
4534                 case WPA_KEY_MGMT_CCKM:
4535                         mgmt = WLAN_AKM_SUITE_CCKM;
4536                         break;
4537                 case WPA_KEY_MGMT_IEEE8021X:
4538                         mgmt = WLAN_AKM_SUITE_8021X;
4539                         break;
4540                 case WPA_KEY_MGMT_FT_IEEE8021X:
4541                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4542                         break;
4543                 case WPA_KEY_MGMT_FT_PSK:
4544                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4545                         break;
4546                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4547                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4548                         break;
4549                 case WPA_KEY_MGMT_PSK_SHA256:
4550                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4551                         break;
4552                 case WPA_KEY_MGMT_OSEN:
4553                         mgmt = WLAN_AKM_SUITE_OSEN;
4554                         break;
4555                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4556                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4557                         break;
4558                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4559                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4560                         break;
4561                 case WPA_KEY_MGMT_PSK:
4562                 default:
4563                         mgmt = WLAN_AKM_SUITE_PSK;
4564                         break;
4565                 }
4566                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4567                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4568                         return -1;
4569         }
4570
4571         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4572                 return -1;
4573
4574         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4575             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4576                 return -1;
4577
4578         if (params->rrm_used) {
4579                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4580                 if (!(drv_rrm_flags &
4581                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4582                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4583                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4584                         return -1;
4585         }
4586
4587         if (nl80211_ht_vht_overrides(msg, params) < 0)
4588                 return -1;
4589
4590         if (params->p2p)
4591                 wpa_printf(MSG_DEBUG, "  * P2P group");
4592
4593         return 0;
4594 }
4595
4596
4597 static int wpa_driver_nl80211_try_connect(
4598         struct wpa_driver_nl80211_data *drv,
4599         struct wpa_driver_associate_params *params)
4600 {
4601         struct nl_msg *msg;
4602         enum nl80211_auth_type type;
4603         int ret;
4604         int algs;
4605
4606         if (params->req_key_mgmt_offload && params->psk &&
4607             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4608              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4609              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4610                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4611                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4612                 if (ret)
4613                         return ret;
4614         }
4615
4616         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4617         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4618         if (!msg)
4619                 return -1;
4620
4621         ret = nl80211_connect_common(drv, params, msg);
4622         if (ret)
4623                 goto fail;
4624
4625         algs = 0;
4626         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4627                 algs++;
4628         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4629                 algs++;
4630         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4631                 algs++;
4632         if (algs > 1) {
4633                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4634                            "selection");
4635                 goto skip_auth_type;
4636         }
4637
4638         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4639                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4640         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4641                 type = NL80211_AUTHTYPE_SHARED_KEY;
4642         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4643                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4644         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4645                 type = NL80211_AUTHTYPE_FT;
4646         else
4647                 goto fail;
4648
4649         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4650         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4651                 goto fail;
4652
4653 skip_auth_type:
4654         ret = nl80211_set_conn_keys(params, msg);
4655         if (ret)
4656                 goto fail;
4657
4658         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4659         msg = NULL;
4660         if (ret) {
4661                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4662                            "(%s)", ret, strerror(-ret));
4663         } else {
4664                 wpa_printf(MSG_DEBUG,
4665                            "nl80211: Connect request send successfully");
4666         }
4667
4668 fail:
4669         nlmsg_free(msg);
4670         return ret;
4671
4672 }
4673
4674
4675 static int wpa_driver_nl80211_connect(
4676         struct wpa_driver_nl80211_data *drv,
4677         struct wpa_driver_associate_params *params)
4678 {
4679         int ret;
4680
4681         /* Store the connection attempted bssid for future use */
4682         if (params->bssid)
4683                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4684         else
4685                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4686
4687         ret = wpa_driver_nl80211_try_connect(drv, params);
4688         if (ret == -EALREADY) {
4689                 /*
4690                  * cfg80211 does not currently accept new connections if
4691                  * we are already connected. As a workaround, force
4692                  * disconnection and try again.
4693                  */
4694                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4695                            "disconnecting before reassociation "
4696                            "attempt");
4697                 if (wpa_driver_nl80211_disconnect(
4698                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4699                         return -1;
4700                 ret = wpa_driver_nl80211_try_connect(drv, params);
4701         }
4702         return ret;
4703 }
4704
4705
4706 static int wpa_driver_nl80211_associate(
4707         void *priv, struct wpa_driver_associate_params *params)
4708 {
4709         struct i802_bss *bss = priv;
4710         struct wpa_driver_nl80211_data *drv = bss->drv;
4711         int ret = -1;
4712         struct nl_msg *msg;
4713
4714         nl80211_unmask_11b_rates(bss);
4715
4716         if (params->mode == IEEE80211_MODE_AP)
4717                 return wpa_driver_nl80211_ap(drv, params);
4718
4719         if (params->mode == IEEE80211_MODE_IBSS)
4720                 return wpa_driver_nl80211_ibss(drv, params);
4721
4722         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4723                 enum nl80211_iftype nlmode = params->p2p ?
4724                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4725
4726                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4727                         return -1;
4728                 return wpa_driver_nl80211_connect(drv, params);
4729         }
4730
4731         nl80211_mark_disconnected(drv);
4732
4733         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4734                    drv->ifindex);
4735         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4736         if (!msg)
4737                 return -1;
4738
4739         ret = nl80211_connect_common(drv, params, msg);
4740         if (ret)
4741                 goto fail;
4742
4743         if (params->prev_bssid) {
4744                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4745                            MAC2STR(params->prev_bssid));
4746                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4747                             params->prev_bssid))
4748                         goto fail;
4749         }
4750
4751         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4752         msg = NULL;
4753         if (ret) {
4754                 wpa_dbg(drv->ctx, MSG_DEBUG,
4755                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4756                         ret, strerror(-ret));
4757                 nl80211_dump_scan(drv);
4758         } else {
4759                 wpa_printf(MSG_DEBUG,
4760                            "nl80211: Association request send successfully");
4761         }
4762
4763 fail:
4764         nlmsg_free(msg);
4765         return ret;
4766 }
4767
4768
4769 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4770                             int ifindex, enum nl80211_iftype mode)
4771 {
4772         struct nl_msg *msg;
4773         int ret = -ENOBUFS;
4774
4775         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4776                    ifindex, mode, nl80211_iftype_str(mode));
4777
4778         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4779         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4780                 goto fail;
4781
4782         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4783         msg = NULL;
4784         if (!ret)
4785                 return 0;
4786 fail:
4787         nlmsg_free(msg);
4788         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4789                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4790         return ret;
4791 }
4792
4793
4794 static int wpa_driver_nl80211_set_mode_impl(
4795                 struct i802_bss *bss,
4796                 enum nl80211_iftype nlmode,
4797                 struct hostapd_freq_params *desired_freq_params)
4798 {
4799         struct wpa_driver_nl80211_data *drv = bss->drv;
4800         int ret = -1;
4801         int i;
4802         int was_ap = is_ap_interface(drv->nlmode);
4803         int res;
4804         int mode_switch_res;
4805
4806         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4807         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4808                 mode_switch_res = 0;
4809
4810         if (mode_switch_res == 0) {
4811                 drv->nlmode = nlmode;
4812                 ret = 0;
4813                 goto done;
4814         }
4815
4816         if (mode_switch_res == -ENODEV)
4817                 return -1;
4818
4819         if (nlmode == drv->nlmode) {
4820                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4821                            "requested mode - ignore error");
4822                 ret = 0;
4823                 goto done; /* Already in the requested mode */
4824         }
4825
4826         /* mac80211 doesn't allow mode changes while the device is up, so
4827          * take the device down, try to set the mode again, and bring the
4828          * device back up.
4829          */
4830         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4831                    "interface down");
4832         for (i = 0; i < 10; i++) {
4833                 res = i802_set_iface_flags(bss, 0);
4834                 if (res == -EACCES || res == -ENODEV)
4835                         break;
4836                 if (res != 0) {
4837                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4838                                    "interface down");
4839                         os_sleep(0, 100000);
4840                         continue;
4841                 }
4842
4843                 /*
4844                  * Setting the mode will fail for some drivers if the phy is
4845                  * on a frequency that the mode is disallowed in.
4846                  */
4847                 if (desired_freq_params) {
4848                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4849                         if (res) {
4850                                 wpa_printf(MSG_DEBUG,
4851                                            "nl80211: Failed to set frequency on interface");
4852                         }
4853                 }
4854
4855                 /* Try to set the mode again while the interface is down */
4856                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4857                 if (mode_switch_res == -EBUSY) {
4858                         wpa_printf(MSG_DEBUG,
4859                                    "nl80211: Delaying mode set while interface going down");
4860                         os_sleep(0, 100000);
4861                         continue;
4862                 }
4863                 ret = mode_switch_res;
4864                 break;
4865         }
4866
4867         if (!ret) {
4868                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4869                            "interface is down");
4870                 drv->nlmode = nlmode;
4871                 drv->ignore_if_down_event = 1;
4872         }
4873
4874         /* Bring the interface back up */
4875         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4876         if (res != 0) {
4877                 wpa_printf(MSG_DEBUG,
4878                            "nl80211: Failed to set interface up after switching mode");
4879                 ret = -1;
4880         }
4881
4882 done:
4883         if (ret) {
4884                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4885                            "from %d failed", nlmode, drv->nlmode);
4886                 return ret;
4887         }
4888
4889         if (is_p2p_net_interface(nlmode)) {
4890                 wpa_printf(MSG_DEBUG,
4891                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4892                            bss->ifname);
4893                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4894         } else if (drv->disabled_11b_rates) {
4895                 wpa_printf(MSG_DEBUG,
4896                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4897                            bss->ifname);
4898                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4899         }
4900
4901         if (is_ap_interface(nlmode)) {
4902                 nl80211_mgmt_unsubscribe(bss, "start AP");
4903                 /* Setup additional AP mode functionality if needed */
4904                 if (nl80211_setup_ap(bss))
4905                         return -1;
4906         } else if (was_ap) {
4907                 /* Remove additional AP mode functionality */
4908                 nl80211_teardown_ap(bss);
4909         } else {
4910                 nl80211_mgmt_unsubscribe(bss, "mode change");
4911         }
4912
4913         if (is_mesh_interface(nlmode) &&
4914             nl80211_mgmt_subscribe_mesh(bss))
4915                 return -1;
4916
4917         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4918             !is_mesh_interface(nlmode) &&
4919             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4920                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4921                            "frame processing - ignore for now");
4922
4923         return 0;
4924 }
4925
4926
4927 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
4928                                 enum nl80211_iftype nlmode)
4929 {
4930         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
4931 }
4932
4933
4934 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
4935                                             struct hostapd_freq_params *freq)
4936 {
4937         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
4938                                                 freq);
4939 }
4940
4941
4942 static int wpa_driver_nl80211_get_capa(void *priv,
4943                                        struct wpa_driver_capa *capa)
4944 {
4945         struct i802_bss *bss = priv;
4946         struct wpa_driver_nl80211_data *drv = bss->drv;
4947
4948         if (!drv->has_capability)
4949                 return -1;
4950         os_memcpy(capa, &drv->capa, sizeof(*capa));
4951         if (drv->extended_capa && drv->extended_capa_mask) {
4952                 capa->extended_capa = drv->extended_capa;
4953                 capa->extended_capa_mask = drv->extended_capa_mask;
4954                 capa->extended_capa_len = drv->extended_capa_len;
4955         }
4956
4957         return 0;
4958 }
4959
4960
4961 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4962 {
4963         struct i802_bss *bss = priv;
4964         struct wpa_driver_nl80211_data *drv = bss->drv;
4965
4966         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
4967                    bss->ifname, drv->operstate, state,
4968                    state ? "UP" : "DORMANT");
4969         drv->operstate = state;
4970         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
4971                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4972 }
4973
4974
4975 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4976 {
4977         struct i802_bss *bss = priv;
4978         struct wpa_driver_nl80211_data *drv = bss->drv;
4979         struct nl_msg *msg;
4980         struct nl80211_sta_flag_update upd;
4981         int ret;
4982
4983         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
4984                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
4985                 return 0;
4986         }
4987
4988         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
4989                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
4990
4991         os_memset(&upd, 0, sizeof(upd));
4992         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4993         if (authorized)
4994                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4995
4996         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4997             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
4998             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
4999                 nlmsg_free(msg);
5000                 return -ENOBUFS;
5001         }
5002
5003         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5004         if (!ret)
5005                 return 0;
5006         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5007                    ret, strerror(-ret));
5008         return ret;
5009 }
5010
5011
5012 /* Set kernel driver on given frequency (MHz) */
5013 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5014 {
5015         struct i802_bss *bss = priv;
5016         return nl80211_set_channel(bss, freq, 0);
5017 }
5018
5019
5020 static inline int min_int(int a, int b)
5021 {
5022         if (a < b)
5023                 return a;
5024         return b;
5025 }
5026
5027
5028 static int get_key_handler(struct nl_msg *msg, void *arg)
5029 {
5030         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5031         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5032
5033         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5034                   genlmsg_attrlen(gnlh, 0), NULL);
5035
5036         /*
5037          * TODO: validate the key index and mac address!
5038          * Otherwise, there's a race condition as soon as
5039          * the kernel starts sending key notifications.
5040          */
5041
5042         if (tb[NL80211_ATTR_KEY_SEQ])
5043                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5044                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5045         return NL_SKIP;
5046 }
5047
5048
5049 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5050                            int idx, u8 *seq)
5051 {
5052         struct i802_bss *bss = priv;
5053         struct wpa_driver_nl80211_data *drv = bss->drv;
5054         struct nl_msg *msg;
5055
5056         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5057                                   NL80211_CMD_GET_KEY);
5058         if (!msg ||
5059             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5060             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5061                 nlmsg_free(msg);
5062                 return -ENOBUFS;
5063         }
5064
5065         memset(seq, 0, 6);
5066
5067         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5068 }
5069
5070
5071 static int i802_set_rts(void *priv, int rts)
5072 {
5073         struct i802_bss *bss = priv;
5074         struct wpa_driver_nl80211_data *drv = bss->drv;
5075         struct nl_msg *msg;
5076         int ret;
5077         u32 val;
5078
5079         if (rts >= 2347)
5080                 val = (u32) -1;
5081         else
5082                 val = rts;
5083
5084         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5085             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5086                 nlmsg_free(msg);
5087                 return -ENOBUFS;
5088         }
5089
5090         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5091         if (!ret)
5092                 return 0;
5093         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5094                    "%d (%s)", rts, ret, strerror(-ret));
5095         return ret;
5096 }
5097
5098
5099 static int i802_set_frag(void *priv, int frag)
5100 {
5101         struct i802_bss *bss = priv;
5102         struct wpa_driver_nl80211_data *drv = bss->drv;
5103         struct nl_msg *msg;
5104         int ret;
5105         u32 val;
5106
5107         if (frag >= 2346)
5108                 val = (u32) -1;
5109         else
5110                 val = frag;
5111
5112         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5113             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5114                 nlmsg_free(msg);
5115                 return -ENOBUFS;
5116         }
5117
5118         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5119         if (!ret)
5120                 return 0;
5121         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5122                    "%d: %d (%s)", frag, ret, strerror(-ret));
5123         return ret;
5124 }
5125
5126
5127 static int i802_flush(void *priv)
5128 {
5129         struct i802_bss *bss = priv;
5130         struct nl_msg *msg;
5131         int res;
5132
5133         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5134                    bss->ifname);
5135
5136         /*
5137          * XXX: FIX! this needs to flush all VLANs too
5138          */
5139         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5140         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5141         if (res) {
5142                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5143                            "(%s)", res, strerror(-res));
5144         }
5145         return res;
5146 }
5147
5148
5149 static int get_sta_handler(struct nl_msg *msg, void *arg)
5150 {
5151         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5152         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5153         struct hostap_sta_driver_data *data = arg;
5154         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5155         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5156                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5157                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5158                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5159                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5160                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5161                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5162         };
5163
5164         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5165                   genlmsg_attrlen(gnlh, 0), NULL);
5166
5167         /*
5168          * TODO: validate the interface and mac address!
5169          * Otherwise, there's a race condition as soon as
5170          * the kernel starts sending station notifications.
5171          */
5172
5173         if (!tb[NL80211_ATTR_STA_INFO]) {
5174                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5175                 return NL_SKIP;
5176         }
5177         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5178                              tb[NL80211_ATTR_STA_INFO],
5179                              stats_policy)) {
5180                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5181                 return NL_SKIP;
5182         }
5183
5184         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5185                 data->inactive_msec =
5186                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5187         if (stats[NL80211_STA_INFO_RX_BYTES])
5188                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5189         if (stats[NL80211_STA_INFO_TX_BYTES])
5190                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5191         if (stats[NL80211_STA_INFO_RX_PACKETS])
5192                 data->rx_packets =
5193                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5194         if (stats[NL80211_STA_INFO_TX_PACKETS])
5195                 data->tx_packets =
5196                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5197         if (stats[NL80211_STA_INFO_TX_FAILED])
5198                 data->tx_retry_failed =
5199                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5200
5201         return NL_SKIP;
5202 }
5203
5204 static int i802_read_sta_data(struct i802_bss *bss,
5205                               struct hostap_sta_driver_data *data,
5206                               const u8 *addr)
5207 {
5208         struct nl_msg *msg;
5209
5210         os_memset(data, 0, sizeof(*data));
5211
5212         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5213             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5214                 nlmsg_free(msg);
5215                 return -ENOBUFS;
5216         }
5217
5218         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5219 }
5220
5221
5222 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5223                                     int cw_min, int cw_max, int burst_time)
5224 {
5225         struct i802_bss *bss = priv;
5226         struct wpa_driver_nl80211_data *drv = bss->drv;
5227         struct nl_msg *msg;
5228         struct nlattr *txq, *params;
5229
5230         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5231         if (!msg)
5232                 return -1;
5233
5234         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5235         if (!txq)
5236                 goto fail;
5237
5238         /* We are only sending parameters for a single TXQ at a time */
5239         params = nla_nest_start(msg, 1);
5240         if (!params)
5241                 goto fail;
5242
5243         switch (queue) {
5244         case 0:
5245                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5246                         goto fail;
5247                 break;
5248         case 1:
5249                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5250                         goto fail;
5251                 break;
5252         case 2:
5253                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5254                         goto fail;
5255                 break;
5256         case 3:
5257                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5258                         goto fail;
5259                 break;
5260         }
5261         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5262          * 32 usec, so need to convert the value here. */
5263         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5264                         (burst_time * 100 + 16) / 32) ||
5265             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5266             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5267             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5268                 goto fail;
5269
5270         nla_nest_end(msg, params);
5271
5272         nla_nest_end(msg, txq);
5273
5274         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5275                 return 0;
5276         msg = NULL;
5277 fail:
5278         nlmsg_free(msg);
5279         return -1;
5280 }
5281
5282
5283 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5284                              const char *ifname, int vlan_id)
5285 {
5286         struct wpa_driver_nl80211_data *drv = bss->drv;
5287         struct nl_msg *msg;
5288         int ret;
5289
5290         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5291                    ", ifname=%s[%d], vlan_id=%d)",
5292                    bss->ifname, if_nametoindex(bss->ifname),
5293                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5294         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5295             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5296             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5297                 nlmsg_free(msg);
5298                 return -ENOBUFS;
5299         }
5300
5301         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5302         if (ret < 0) {
5303                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5304                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5305                            MAC2STR(addr), ifname, vlan_id, ret,
5306                            strerror(-ret));
5307         }
5308         return ret;
5309 }
5310
5311
5312 static int i802_get_inact_sec(void *priv, const u8 *addr)
5313 {
5314         struct hostap_sta_driver_data data;
5315         int ret;
5316
5317         data.inactive_msec = (unsigned long) -1;
5318         ret = i802_read_sta_data(priv, &data, addr);
5319         if (ret == -ENOENT)
5320                 return -ENOENT;
5321         if (ret || data.inactive_msec == (unsigned long) -1)
5322                 return -1;
5323         return data.inactive_msec / 1000;
5324 }
5325
5326
5327 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5328 {
5329 #if 0
5330         /* TODO */
5331 #endif
5332         return 0;
5333 }
5334
5335
5336 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5337                            int reason)
5338 {
5339         struct i802_bss *bss = priv;
5340         struct wpa_driver_nl80211_data *drv = bss->drv;
5341         struct ieee80211_mgmt mgmt;
5342
5343         if (is_mesh_interface(drv->nlmode))
5344                 return -1;
5345
5346         if (drv->device_ap_sme)
5347                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5348
5349         memset(&mgmt, 0, sizeof(mgmt));
5350         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5351                                           WLAN_FC_STYPE_DEAUTH);
5352         memcpy(mgmt.da, addr, ETH_ALEN);
5353         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5354         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5355         mgmt.u.deauth.reason_code = host_to_le16(reason);
5356         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5357                                             IEEE80211_HDRLEN +
5358                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5359                                             0);
5360 }
5361
5362
5363 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5364                              int reason)
5365 {
5366         struct i802_bss *bss = priv;
5367         struct wpa_driver_nl80211_data *drv = bss->drv;
5368         struct ieee80211_mgmt mgmt;
5369
5370         if (is_mesh_interface(drv->nlmode))
5371                 return -1;
5372
5373         if (drv->device_ap_sme)
5374                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5375
5376         memset(&mgmt, 0, sizeof(mgmt));
5377         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5378                                           WLAN_FC_STYPE_DISASSOC);
5379         memcpy(mgmt.da, addr, ETH_ALEN);
5380         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5381         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5382         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5383         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5384                                             IEEE80211_HDRLEN +
5385                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5386                                             0);
5387 }
5388
5389
5390 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5391 {
5392         char buf[200], *pos, *end;
5393         int i, res;
5394
5395         pos = buf;
5396         end = pos + sizeof(buf);
5397
5398         for (i = 0; i < drv->num_if_indices; i++) {
5399                 if (!drv->if_indices[i])
5400                         continue;
5401                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5402                 if (os_snprintf_error(end - pos, res))
5403                         break;
5404                 pos += res;
5405         }
5406         *pos = '\0';
5407
5408         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5409                    drv->num_if_indices, buf);
5410 }
5411
5412
5413 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5414 {
5415         int i;
5416         int *old;
5417
5418         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5419                    ifidx);
5420         if (have_ifidx(drv, ifidx)) {
5421                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5422                            ifidx);
5423                 return;
5424         }
5425         for (i = 0; i < drv->num_if_indices; i++) {
5426                 if (drv->if_indices[i] == 0) {
5427                         drv->if_indices[i] = ifidx;
5428                         dump_ifidx(drv);
5429                         return;
5430                 }
5431         }
5432
5433         if (drv->if_indices != drv->default_if_indices)
5434                 old = drv->if_indices;
5435         else
5436                 old = NULL;
5437
5438         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5439                                            sizeof(int));
5440         if (!drv->if_indices) {
5441                 if (!old)
5442                         drv->if_indices = drv->default_if_indices;
5443                 else
5444                         drv->if_indices = old;
5445                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5446                            "interfaces");
5447                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5448                 return;
5449         } else if (!old)
5450                 os_memcpy(drv->if_indices, drv->default_if_indices,
5451                           sizeof(drv->default_if_indices));
5452         drv->if_indices[drv->num_if_indices] = ifidx;
5453         drv->num_if_indices++;
5454         dump_ifidx(drv);
5455 }
5456
5457
5458 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5459 {
5460         int i;
5461
5462         for (i = 0; i < drv->num_if_indices; i++) {
5463                 if (drv->if_indices[i] == ifidx) {
5464                         drv->if_indices[i] = 0;
5465                         break;
5466                 }
5467         }
5468         dump_ifidx(drv);
5469 }
5470
5471
5472 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5473 {
5474         int i;
5475
5476         for (i = 0; i < drv->num_if_indices; i++)
5477                 if (drv->if_indices[i] == ifidx)
5478                         return 1;
5479
5480         return 0;
5481 }
5482
5483
5484 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5485                             const char *bridge_ifname, char *ifname_wds)
5486 {
5487         struct i802_bss *bss = priv;
5488         struct wpa_driver_nl80211_data *drv = bss->drv;
5489         char name[IFNAMSIZ + 1];
5490
5491         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5492         if (ifname_wds)
5493                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5494
5495         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5496                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5497         if (val) {
5498                 if (!if_nametoindex(name)) {
5499                         if (nl80211_create_iface(drv, name,
5500                                                  NL80211_IFTYPE_AP_VLAN,
5501                                                  bss->addr, 1, NULL, NULL, 0) <
5502                             0)
5503                                 return -1;
5504                         if (bridge_ifname &&
5505                             linux_br_add_if(drv->global->ioctl_sock,
5506                                             bridge_ifname, name) < 0)
5507                                 return -1;
5508                 }
5509                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5510                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5511                                    "interface %s up", name);
5512                 }
5513                 return i802_set_sta_vlan(priv, addr, name, 0);
5514         } else {
5515                 if (bridge_ifname)
5516                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5517                                         name);
5518
5519                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5520                 nl80211_remove_iface(drv, if_nametoindex(name));
5521                 return 0;
5522         }
5523 }
5524
5525
5526 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5527 {
5528         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5529         struct sockaddr_ll lladdr;
5530         unsigned char buf[3000];
5531         int len;
5532         socklen_t fromlen = sizeof(lladdr);
5533
5534         len = recvfrom(sock, buf, sizeof(buf), 0,
5535                        (struct sockaddr *)&lladdr, &fromlen);
5536         if (len < 0) {
5537                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5538                            strerror(errno));
5539                 return;
5540         }
5541
5542         if (have_ifidx(drv, lladdr.sll_ifindex))
5543                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5544 }
5545
5546
5547 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5548                              struct i802_bss *bss,
5549                              const char *brname, const char *ifname)
5550 {
5551         int br_ifindex;
5552         char in_br[IFNAMSIZ];
5553
5554         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5555         br_ifindex = if_nametoindex(brname);
5556         if (br_ifindex == 0) {
5557                 /*
5558                  * Bridge was configured, but the bridge device does
5559                  * not exist. Try to add it now.
5560                  */
5561                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5562                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5563                                    "bridge interface %s: %s",
5564                                    brname, strerror(errno));
5565                         return -1;
5566                 }
5567                 bss->added_bridge = 1;
5568                 br_ifindex = if_nametoindex(brname);
5569                 add_ifidx(drv, br_ifindex);
5570         }
5571         bss->br_ifindex = br_ifindex;
5572
5573         if (linux_br_get(in_br, ifname) == 0) {
5574                 if (os_strcmp(in_br, brname) == 0)
5575                         return 0; /* already in the bridge */
5576
5577                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5578                            "bridge %s", ifname, in_br);
5579                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5580                     0) {
5581                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5582                                    "remove interface %s from bridge "
5583                                    "%s: %s",
5584                                    ifname, brname, strerror(errno));
5585                         return -1;
5586                 }
5587         }
5588
5589         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5590                    ifname, brname);
5591         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5592                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5593                            "into bridge %s: %s",
5594                            ifname, brname, strerror(errno));
5595                 return -1;
5596         }
5597         bss->added_if_into_bridge = 1;
5598
5599         return 0;
5600 }
5601
5602
5603 static void *i802_init(struct hostapd_data *hapd,
5604                        struct wpa_init_params *params)
5605 {
5606         struct wpa_driver_nl80211_data *drv;
5607         struct i802_bss *bss;
5608         size_t i;
5609         char brname[IFNAMSIZ];
5610         int ifindex, br_ifindex;
5611         int br_added = 0;
5612
5613         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5614                                           params->global_priv, 1,
5615                                           params->bssid, params->driver_params);
5616         if (bss == NULL)
5617                 return NULL;
5618
5619         drv = bss->drv;
5620
5621         if (linux_br_get(brname, params->ifname) == 0) {
5622                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5623                            params->ifname, brname);
5624                 br_ifindex = if_nametoindex(brname);
5625                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5626         } else {
5627                 brname[0] = '\0';
5628                 br_ifindex = 0;
5629         }
5630         bss->br_ifindex = br_ifindex;
5631
5632         for (i = 0; i < params->num_bridge; i++) {
5633                 if (params->bridge[i]) {
5634                         ifindex = if_nametoindex(params->bridge[i]);
5635                         if (ifindex)
5636                                 add_ifidx(drv, ifindex);
5637                         if (ifindex == br_ifindex)
5638                                 br_added = 1;
5639                 }
5640         }
5641
5642         /* start listening for EAPOL on the default AP interface */
5643         add_ifidx(drv, drv->ifindex);
5644
5645         if (params->num_bridge && params->bridge[0]) {
5646                 if (i802_check_bridge(drv, bss, params->bridge[0],
5647                                       params->ifname) < 0)
5648                         goto failed;
5649                 if (os_strcmp(params->bridge[0], brname) != 0)
5650                         br_added = 1;
5651         }
5652
5653         if (!br_added && br_ifindex &&
5654             (params->num_bridge == 0 || !params->bridge[0]))
5655                 add_ifidx(drv, br_ifindex);
5656
5657 #ifdef CONFIG_LIBNL3_ROUTE
5658         if (bss->added_if_into_bridge) {
5659                 drv->rtnl_sk = nl_socket_alloc();
5660                 if (drv->rtnl_sk == NULL) {
5661                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5662                         goto failed;
5663                 }
5664
5665                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5666                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5667                                    strerror(errno));
5668                         goto failed;
5669                 }
5670         }
5671 #endif /* CONFIG_LIBNL3_ROUTE */
5672
5673         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5674         if (drv->eapol_sock < 0) {
5675                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5676                            strerror(errno));
5677                 goto failed;
5678         }
5679
5680         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5681         {
5682                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5683                 goto failed;
5684         }
5685
5686         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5687                                params->own_addr))
5688                 goto failed;
5689         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5690
5691         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5692
5693         return bss;
5694
5695 failed:
5696         wpa_driver_nl80211_deinit(bss);
5697         return NULL;
5698 }
5699
5700
5701 static void i802_deinit(void *priv)
5702 {
5703         struct i802_bss *bss = priv;
5704         wpa_driver_nl80211_deinit(bss);
5705 }
5706
5707
5708 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5709         enum wpa_driver_if_type type)
5710 {
5711         switch (type) {
5712         case WPA_IF_STATION:
5713                 return NL80211_IFTYPE_STATION;
5714         case WPA_IF_P2P_CLIENT:
5715         case WPA_IF_P2P_GROUP:
5716                 return NL80211_IFTYPE_P2P_CLIENT;
5717         case WPA_IF_AP_VLAN:
5718                 return NL80211_IFTYPE_AP_VLAN;
5719         case WPA_IF_AP_BSS:
5720                 return NL80211_IFTYPE_AP;
5721         case WPA_IF_P2P_GO:
5722                 return NL80211_IFTYPE_P2P_GO;
5723         case WPA_IF_P2P_DEVICE:
5724                 return NL80211_IFTYPE_P2P_DEVICE;
5725         case WPA_IF_MESH:
5726                 return NL80211_IFTYPE_MESH_POINT;
5727         }
5728         return -1;
5729 }
5730
5731
5732 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5733
5734 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5735 {
5736         struct wpa_driver_nl80211_data *drv;
5737         dl_list_for_each(drv, &global->interfaces,
5738                          struct wpa_driver_nl80211_data, list) {
5739                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5740                         return 1;
5741         }
5742         return 0;
5743 }
5744
5745
5746 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5747 {
5748         unsigned int idx;
5749
5750         if (!drv->global)
5751                 return -1;
5752
5753         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5754         for (idx = 0; idx < 64; idx++) {
5755                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5756                 new_addr[0] ^= idx << 2;
5757                 if (!nl80211_addr_in_use(drv->global, new_addr))
5758                         break;
5759         }
5760         if (idx == 64)
5761                 return -1;
5762
5763         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5764                    MACSTR, MAC2STR(new_addr));
5765
5766         return 0;
5767 }
5768
5769 #endif /* CONFIG_P2P || CONFIG_MESH */
5770
5771
5772 struct wdev_info {
5773         u64 wdev_id;
5774         int wdev_id_set;
5775         u8 macaddr[ETH_ALEN];
5776 };
5777
5778 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5779 {
5780         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5781         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5782         struct wdev_info *wi = arg;
5783
5784         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5785                   genlmsg_attrlen(gnlh, 0), NULL);
5786         if (tb[NL80211_ATTR_WDEV]) {
5787                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5788                 wi->wdev_id_set = 1;
5789         }
5790
5791         if (tb[NL80211_ATTR_MAC])
5792                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5793                           ETH_ALEN);
5794
5795         return NL_SKIP;
5796 }
5797
5798
5799 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5800                                      const char *ifname, const u8 *addr,
5801                                      void *bss_ctx, void **drv_priv,
5802                                      char *force_ifname, u8 *if_addr,
5803                                      const char *bridge, int use_existing)
5804 {
5805         enum nl80211_iftype nlmode;
5806         struct i802_bss *bss = priv;
5807         struct wpa_driver_nl80211_data *drv = bss->drv;
5808         int ifidx;
5809         int added = 1;
5810
5811         if (addr)
5812                 os_memcpy(if_addr, addr, ETH_ALEN);
5813         nlmode = wpa_driver_nl80211_if_type(type);
5814         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5815                 struct wdev_info p2pdev_info;
5816
5817                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5818                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5819                                              0, nl80211_wdev_handler,
5820                                              &p2pdev_info, use_existing);
5821                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5822                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5823                                    ifname);
5824                         return -1;
5825                 }
5826
5827                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5828                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5829                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5830                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5831                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5832                            ifname,
5833                            (long long unsigned int) p2pdev_info.wdev_id);
5834         } else {
5835                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5836                                              0, NULL, NULL, use_existing);
5837                 if (use_existing && ifidx == -ENFILE) {
5838                         added = 0;
5839                         ifidx = if_nametoindex(ifname);
5840                 } else if (ifidx < 0) {
5841                         return -1;
5842                 }
5843         }
5844
5845         if (!addr) {
5846                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5847                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5848                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5849                                             bss->ifname, if_addr) < 0) {
5850                         if (added)
5851                                 nl80211_remove_iface(drv, ifidx);
5852                         return -1;
5853                 }
5854         }
5855
5856 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5857         if (!addr &&
5858             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5859              type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
5860                 /* Enforce unique P2P Interface Address */
5861                 u8 new_addr[ETH_ALEN];
5862
5863                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5864                                        new_addr) < 0) {
5865                         if (added)
5866                                 nl80211_remove_iface(drv, ifidx);
5867                         return -1;
5868                 }
5869                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5870                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5871                                    "for %s interface", type == WPA_IF_MESH ?
5872                                    "mesh" : "P2P group");
5873                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5874                                 if (added)
5875                                         nl80211_remove_iface(drv, ifidx);
5876                                 return -1;
5877                         }
5878                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5879                                                new_addr) < 0) {
5880                                 if (added)
5881                                         nl80211_remove_iface(drv, ifidx);
5882                                 return -1;
5883                         }
5884                 }
5885                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5886         }
5887 #endif /* CONFIG_P2P || CONFIG_MESH */
5888
5889         if (type == WPA_IF_AP_BSS) {
5890                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5891                 if (new_bss == NULL) {
5892                         if (added)
5893                                 nl80211_remove_iface(drv, ifidx);
5894                         return -1;
5895                 }
5896
5897                 if (bridge &&
5898                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5899                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5900                                    "interface %s to a bridge %s",
5901                                    ifname, bridge);
5902                         if (added)
5903                                 nl80211_remove_iface(drv, ifidx);
5904                         os_free(new_bss);
5905                         return -1;
5906                 }
5907
5908                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5909                 {
5910                         if (added)
5911                                 nl80211_remove_iface(drv, ifidx);
5912                         os_free(new_bss);
5913                         return -1;
5914                 }
5915                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5916                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5917                 new_bss->ifindex = ifidx;
5918                 new_bss->drv = drv;
5919                 new_bss->next = drv->first_bss->next;
5920                 new_bss->freq = drv->first_bss->freq;
5921                 new_bss->ctx = bss_ctx;
5922                 new_bss->added_if = added;
5923                 drv->first_bss->next = new_bss;
5924                 if (drv_priv)
5925                         *drv_priv = new_bss;
5926                 nl80211_init_bss(new_bss);
5927
5928                 /* Subscribe management frames for this WPA_IF_AP_BSS */
5929                 if (nl80211_setup_ap(new_bss))
5930                         return -1;
5931         }
5932
5933         if (drv->global)
5934                 drv->global->if_add_ifindex = ifidx;
5935
5936         /*
5937          * Some virtual interfaces need to process EAPOL packets and events on
5938          * the parent interface. This is used mainly with hostapd.
5939          */
5940         if (ifidx > 0 &&
5941             (drv->hostapd ||
5942              nlmode == NL80211_IFTYPE_AP_VLAN ||
5943              nlmode == NL80211_IFTYPE_WDS ||
5944              nlmode == NL80211_IFTYPE_MONITOR))
5945                 add_ifidx(drv, ifidx);
5946
5947         return 0;
5948 }
5949
5950
5951 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
5952                                         enum wpa_driver_if_type type,
5953                                         const char *ifname)
5954 {
5955         struct wpa_driver_nl80211_data *drv = bss->drv;
5956         int ifindex = if_nametoindex(ifname);
5957
5958         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
5959                    __func__, type, ifname, ifindex, bss->added_if);
5960         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
5961                 nl80211_remove_iface(drv, ifindex);
5962         else if (ifindex > 0 && !bss->added_if) {
5963                 struct wpa_driver_nl80211_data *drv2;
5964                 dl_list_for_each(drv2, &drv->global->interfaces,
5965                                  struct wpa_driver_nl80211_data, list)
5966                         del_ifidx(drv2, ifindex);
5967         }
5968
5969         if (type != WPA_IF_AP_BSS)
5970                 return 0;
5971
5972         if (bss->added_if_into_bridge) {
5973                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
5974                                     bss->ifname) < 0)
5975                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5976                                    "interface %s from bridge %s: %s",
5977                                    bss->ifname, bss->brname, strerror(errno));
5978         }
5979         if (bss->added_bridge) {
5980                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
5981                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5982                                    "bridge %s: %s",
5983                                    bss->brname, strerror(errno));
5984         }
5985
5986         if (bss != drv->first_bss) {
5987                 struct i802_bss *tbss;
5988
5989                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
5990                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
5991                         if (tbss->next == bss) {
5992                                 tbss->next = bss->next;
5993                                 /* Unsubscribe management frames */
5994                                 nl80211_teardown_ap(bss);
5995                                 nl80211_destroy_bss(bss);
5996                                 if (!bss->added_if)
5997                                         i802_set_iface_flags(bss, 0);
5998                                 os_free(bss);
5999                                 bss = NULL;
6000                                 break;
6001                         }
6002                 }
6003                 if (bss)
6004                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6005                                    "BSS %p in the list", __func__, bss);
6006         } else {
6007                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6008                 nl80211_teardown_ap(bss);
6009                 if (!bss->added_if && !drv->first_bss->next)
6010                         wpa_driver_nl80211_del_beacon(drv);
6011                 nl80211_destroy_bss(bss);
6012                 if (!bss->added_if)
6013                         i802_set_iface_flags(bss, 0);
6014                 if (drv->first_bss->next) {
6015                         drv->first_bss = drv->first_bss->next;
6016                         drv->ctx = drv->first_bss->ctx;
6017                         os_free(bss);
6018                 } else {
6019                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6020                 }
6021         }
6022
6023         return 0;
6024 }
6025
6026
6027 static int cookie_handler(struct nl_msg *msg, void *arg)
6028 {
6029         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6030         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6031         u64 *cookie = arg;
6032         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6033                   genlmsg_attrlen(gnlh, 0), NULL);
6034         if (tb[NL80211_ATTR_COOKIE])
6035                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6036         return NL_SKIP;
6037 }
6038
6039
6040 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6041                                   unsigned int freq, unsigned int wait,
6042                                   const u8 *buf, size_t buf_len,
6043                                   u64 *cookie_out, int no_cck, int no_ack,
6044                                   int offchanok)
6045 {
6046         struct wpa_driver_nl80211_data *drv = bss->drv;
6047         struct nl_msg *msg;
6048         u64 cookie;
6049         int ret = -1;
6050
6051         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6052                    "no_ack=%d offchanok=%d",
6053                    freq, wait, no_cck, no_ack, offchanok);
6054         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6055
6056         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6057             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6058             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6059             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6060                            drv->test_use_roc_tx) &&
6061              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6062             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6063             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6064             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6065                 goto fail;
6066
6067         cookie = 0;
6068         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6069         msg = NULL;
6070         if (ret) {
6071                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6072                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6073                            freq, wait);
6074         } else {
6075                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6076                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6077                            (long long unsigned int) cookie);
6078
6079                 if (cookie_out)
6080                         *cookie_out = no_ack ? (u64) -1 : cookie;
6081         }
6082
6083 fail:
6084         nlmsg_free(msg);
6085         return ret;
6086 }
6087
6088
6089 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6090                                           unsigned int freq,
6091                                           unsigned int wait_time,
6092                                           const u8 *dst, const u8 *src,
6093                                           const u8 *bssid,
6094                                           const u8 *data, size_t data_len,
6095                                           int no_cck)
6096 {
6097         struct wpa_driver_nl80211_data *drv = bss->drv;
6098         int ret = -1;
6099         u8 *buf;
6100         struct ieee80211_hdr *hdr;
6101
6102         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6103                    "freq=%u MHz wait=%d ms no_cck=%d)",
6104                    drv->ifindex, freq, wait_time, no_cck);
6105
6106         buf = os_zalloc(24 + data_len);
6107         if (buf == NULL)
6108                 return ret;
6109         os_memcpy(buf + 24, data, data_len);
6110         hdr = (struct ieee80211_hdr *) buf;
6111         hdr->frame_control =
6112                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6113         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6114         os_memcpy(hdr->addr2, src, ETH_ALEN);
6115         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6116
6117         if (is_ap_interface(drv->nlmode) &&
6118             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6119              (int) freq == bss->freq || drv->device_ap_sme ||
6120              !drv->use_monitor))
6121                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6122                                                    0, freq, no_cck, 1,
6123                                                    wait_time);
6124         else
6125                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6126                                              24 + data_len,
6127                                              &drv->send_action_cookie,
6128                                              no_cck, 0, 1);
6129
6130         os_free(buf);
6131         return ret;
6132 }
6133
6134
6135 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6136 {
6137         struct i802_bss *bss = priv;
6138         struct wpa_driver_nl80211_data *drv = bss->drv;
6139         struct nl_msg *msg;
6140         int ret;
6141
6142         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6143                    (long long unsigned int) drv->send_action_cookie);
6144         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6145             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6146                 nlmsg_free(msg);
6147                 return;
6148         }
6149
6150         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6151         if (ret)
6152                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6153                            "(%s)", ret, strerror(-ret));
6154 }
6155
6156
6157 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6158                                                 unsigned int duration)
6159 {
6160         struct i802_bss *bss = priv;
6161         struct wpa_driver_nl80211_data *drv = bss->drv;
6162         struct nl_msg *msg;
6163         int ret;
6164         u64 cookie;
6165
6166         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6167             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6168             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6169                 nlmsg_free(msg);
6170                 return -1;
6171         }
6172
6173         cookie = 0;
6174         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6175         if (ret == 0) {
6176                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6177                            "0x%llx for freq=%u MHz duration=%u",
6178                            (long long unsigned int) cookie, freq, duration);
6179                 drv->remain_on_chan_cookie = cookie;
6180                 drv->pending_remain_on_chan = 1;
6181                 return 0;
6182         }
6183         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6184                    "(freq=%d duration=%u): %d (%s)",
6185                    freq, duration, ret, strerror(-ret));
6186         return -1;
6187 }
6188
6189
6190 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6191 {
6192         struct i802_bss *bss = priv;
6193         struct wpa_driver_nl80211_data *drv = bss->drv;
6194         struct nl_msg *msg;
6195         int ret;
6196
6197         if (!drv->pending_remain_on_chan) {
6198                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6199                            "to cancel");
6200                 return -1;
6201         }
6202
6203         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6204                    "0x%llx",
6205                    (long long unsigned int) drv->remain_on_chan_cookie);
6206
6207         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6208         if (!msg ||
6209             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6210                 nlmsg_free(msg);
6211                 return -1;
6212         }
6213
6214         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6215         if (ret == 0)
6216                 return 0;
6217         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6218                    "%d (%s)", ret, strerror(-ret));
6219         return -1;
6220 }
6221
6222
6223 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6224 {
6225         struct wpa_driver_nl80211_data *drv = bss->drv;
6226
6227         if (!report) {
6228                 if (bss->nl_preq && drv->device_ap_sme &&
6229                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6230                     !bss->static_ap) {
6231                         /*
6232                          * Do not disable Probe Request reporting that was
6233                          * enabled in nl80211_setup_ap().
6234                          */
6235                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6236                                    "Probe Request reporting nl_preq=%p while "
6237                                    "in AP mode", bss->nl_preq);
6238                 } else if (bss->nl_preq) {
6239                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6240                                    "reporting nl_preq=%p", bss->nl_preq);
6241                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6242                 }
6243                 return 0;
6244         }
6245
6246         if (bss->nl_preq) {
6247                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6248                            "already on! nl_preq=%p", bss->nl_preq);
6249                 return 0;
6250         }
6251
6252         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6253         if (bss->nl_preq == NULL)
6254                 return -1;
6255         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6256                    "reporting nl_preq=%p", bss->nl_preq);
6257
6258         if (nl80211_register_frame(bss, bss->nl_preq,
6259                                    (WLAN_FC_TYPE_MGMT << 2) |
6260                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6261                                    NULL, 0) < 0)
6262                 goto out_err;
6263
6264         nl80211_register_eloop_read(&bss->nl_preq,
6265                                     wpa_driver_nl80211_event_receive,
6266                                     bss->nl_cb);
6267
6268         return 0;
6269
6270  out_err:
6271         nl_destroy_handles(&bss->nl_preq);
6272         return -1;
6273 }
6274
6275
6276 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6277                                      int ifindex, int disabled)
6278 {
6279         struct nl_msg *msg;
6280         struct nlattr *bands, *band;
6281         int ret;
6282
6283         wpa_printf(MSG_DEBUG,
6284                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6285                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6286                    "no NL80211_TXRATE_LEGACY constraint");
6287
6288         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6289                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6290         if (!msg)
6291                 return -1;
6292
6293         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6294         if (!bands)
6295                 goto fail;
6296
6297         /*
6298          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6299          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6300          * rates. All 5 GHz rates are left enabled.
6301          */
6302         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6303         if (!band ||
6304             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6305                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6306                 goto fail;
6307         nla_nest_end(msg, band);
6308
6309         nla_nest_end(msg, bands);
6310
6311         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6312         if (ret) {
6313                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6314                            "(%s)", ret, strerror(-ret));
6315         } else
6316                 drv->disabled_11b_rates = disabled;
6317
6318         return ret;
6319
6320 fail:
6321         nlmsg_free(msg);
6322         return -1;
6323 }
6324
6325
6326 static int wpa_driver_nl80211_deinit_ap(void *priv)
6327 {
6328         struct i802_bss *bss = priv;
6329         struct wpa_driver_nl80211_data *drv = bss->drv;
6330         if (!is_ap_interface(drv->nlmode))
6331                 return -1;
6332         wpa_driver_nl80211_del_beacon(drv);
6333         bss->beacon_set = 0;
6334
6335         /*
6336          * If the P2P GO interface was dynamically added, then it is
6337          * possible that the interface change to station is not possible.
6338          */
6339         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6340                 return 0;
6341
6342         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6343 }
6344
6345
6346 static int wpa_driver_nl80211_stop_ap(void *priv)
6347 {
6348         struct i802_bss *bss = priv;
6349         struct wpa_driver_nl80211_data *drv = bss->drv;
6350         if (!is_ap_interface(drv->nlmode))
6351                 return -1;
6352         wpa_driver_nl80211_del_beacon(drv);
6353         bss->beacon_set = 0;
6354         return 0;
6355 }
6356
6357
6358 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6359 {
6360         struct i802_bss *bss = priv;
6361         struct wpa_driver_nl80211_data *drv = bss->drv;
6362         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6363                 return -1;
6364
6365         /*
6366          * If the P2P Client interface was dynamically added, then it is
6367          * possible that the interface change to station is not possible.
6368          */
6369         if (bss->if_dynamic)
6370                 return 0;
6371
6372         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6373 }
6374
6375
6376 static void wpa_driver_nl80211_resume(void *priv)
6377 {
6378         struct i802_bss *bss = priv;
6379
6380         if (i802_set_iface_flags(bss, 1))
6381                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6382 }
6383
6384
6385 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6386 {
6387         struct i802_bss *bss = priv;
6388         struct wpa_driver_nl80211_data *drv = bss->drv;
6389         struct nl_msg *msg;
6390         struct nlattr *cqm;
6391
6392         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6393                    "hysteresis=%d", threshold, hysteresis);
6394
6395         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6396             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6397             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6398             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6399                 nlmsg_free(msg);
6400                 return -1;
6401         }
6402         nla_nest_end(msg, cqm);
6403
6404         return send_and_recv_msgs(drv, msg, NULL, NULL);
6405 }
6406
6407
6408 static int get_channel_width(struct nl_msg *msg, void *arg)
6409 {
6410         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6411         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6412         struct wpa_signal_info *sig_change = arg;
6413
6414         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6415                   genlmsg_attrlen(gnlh, 0), NULL);
6416
6417         sig_change->center_frq1 = -1;
6418         sig_change->center_frq2 = -1;
6419         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6420
6421         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6422                 sig_change->chanwidth = convert2width(
6423                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6424                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6425                         sig_change->center_frq1 =
6426                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6427                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6428                         sig_change->center_frq2 =
6429                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6430         }
6431
6432         return NL_SKIP;
6433 }
6434
6435
6436 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6437                                      struct wpa_signal_info *sig)
6438 {
6439         struct nl_msg *msg;
6440
6441         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6442         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6443 }
6444
6445
6446 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6447 {
6448         struct i802_bss *bss = priv;
6449         struct wpa_driver_nl80211_data *drv = bss->drv;
6450         int res;
6451
6452         os_memset(si, 0, sizeof(*si));
6453         res = nl80211_get_link_signal(drv, si);
6454         if (res != 0)
6455                 return res;
6456
6457         res = nl80211_get_channel_width(drv, si);
6458         if (res != 0)
6459                 return res;
6460
6461         return nl80211_get_link_noise(drv, si);
6462 }
6463
6464
6465 static int wpa_driver_nl80211_shared_freq(void *priv)
6466 {
6467         struct i802_bss *bss = priv;
6468         struct wpa_driver_nl80211_data *drv = bss->drv;
6469         struct wpa_driver_nl80211_data *driver;
6470         int freq = 0;
6471
6472         /*
6473          * If the same PHY is in connected state with some other interface,
6474          * then retrieve the assoc freq.
6475          */
6476         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
6477                    drv->phyname);
6478
6479         dl_list_for_each(driver, &drv->global->interfaces,
6480                          struct wpa_driver_nl80211_data, list) {
6481                 if (drv == driver ||
6482                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
6483                     !driver->associated)
6484                         continue;
6485
6486                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
6487                            MACSTR,
6488                            driver->phyname, driver->first_bss->ifname,
6489                            MAC2STR(driver->first_bss->addr));
6490                 if (is_ap_interface(driver->nlmode))
6491                         freq = driver->first_bss->freq;
6492                 else
6493                         freq = nl80211_get_assoc_freq(driver);
6494                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
6495                            drv->phyname, freq);
6496         }
6497
6498         if (!freq)
6499                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
6500                            "PHY (%s) in associated state", drv->phyname);
6501
6502         return freq;
6503 }
6504
6505
6506 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6507                               int encrypt)
6508 {
6509         struct i802_bss *bss = priv;
6510         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6511                                              0, 0, 0, 0);
6512 }
6513
6514
6515 static int nl80211_set_param(void *priv, const char *param)
6516 {
6517         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6518         if (param == NULL)
6519                 return 0;
6520
6521 #ifdef CONFIG_P2P
6522         if (os_strstr(param, "use_p2p_group_interface=1")) {
6523                 struct i802_bss *bss = priv;
6524                 struct wpa_driver_nl80211_data *drv = bss->drv;
6525
6526                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6527                            "interface");
6528                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6529                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6530         }
6531 #endif /* CONFIG_P2P */
6532
6533         if (os_strstr(param, "use_monitor=1")) {
6534                 struct i802_bss *bss = priv;
6535                 struct wpa_driver_nl80211_data *drv = bss->drv;
6536                 drv->use_monitor = 1;
6537         }
6538
6539         if (os_strstr(param, "force_connect_cmd=1")) {
6540                 struct i802_bss *bss = priv;
6541                 struct wpa_driver_nl80211_data *drv = bss->drv;
6542                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6543                 drv->force_connect_cmd = 1;
6544         }
6545
6546         if (os_strstr(param, "no_offchannel_tx=1")) {
6547                 struct i802_bss *bss = priv;
6548                 struct wpa_driver_nl80211_data *drv = bss->drv;
6549                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6550                 drv->test_use_roc_tx = 1;
6551         }
6552
6553         return 0;
6554 }
6555
6556
6557 static void * nl80211_global_init(void)
6558 {
6559         struct nl80211_global *global;
6560         struct netlink_config *cfg;
6561
6562         global = os_zalloc(sizeof(*global));
6563         if (global == NULL)
6564                 return NULL;
6565         global->ioctl_sock = -1;
6566         dl_list_init(&global->interfaces);
6567         global->if_add_ifindex = -1;
6568
6569         cfg = os_zalloc(sizeof(*cfg));
6570         if (cfg == NULL)
6571                 goto err;
6572
6573         cfg->ctx = global;
6574         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6575         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6576         global->netlink = netlink_init(cfg);
6577         if (global->netlink == NULL) {
6578                 os_free(cfg);
6579                 goto err;
6580         }
6581
6582         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6583                 goto err;
6584
6585         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6586         if (global->ioctl_sock < 0) {
6587                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6588                            strerror(errno));
6589                 goto err;
6590         }
6591
6592         return global;
6593
6594 err:
6595         nl80211_global_deinit(global);
6596         return NULL;
6597 }
6598
6599
6600 static void nl80211_global_deinit(void *priv)
6601 {
6602         struct nl80211_global *global = priv;
6603         if (global == NULL)
6604                 return;
6605         if (!dl_list_empty(&global->interfaces)) {
6606                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6607                            "nl80211_global_deinit",
6608                            dl_list_len(&global->interfaces));
6609         }
6610
6611         if (global->netlink)
6612                 netlink_deinit(global->netlink);
6613
6614         nl_destroy_handles(&global->nl);
6615
6616         if (global->nl_event)
6617                 nl80211_destroy_eloop_handle(&global->nl_event);
6618
6619         nl_cb_put(global->nl_cb);
6620
6621         if (global->ioctl_sock >= 0)
6622                 close(global->ioctl_sock);
6623
6624         os_free(global);
6625 }
6626
6627
6628 static const char * nl80211_get_radio_name(void *priv)
6629 {
6630         struct i802_bss *bss = priv;
6631         struct wpa_driver_nl80211_data *drv = bss->drv;
6632         return drv->phyname;
6633 }
6634
6635
6636 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6637                          const u8 *pmkid)
6638 {
6639         struct nl_msg *msg;
6640
6641         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6642             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6643             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6644                 nlmsg_free(msg);
6645                 return -ENOBUFS;
6646         }
6647
6648         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6649 }
6650
6651
6652 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6653 {
6654         struct i802_bss *bss = priv;
6655         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6656         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6657 }
6658
6659
6660 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6661 {
6662         struct i802_bss *bss = priv;
6663         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6664                    MAC2STR(bssid));
6665         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6666 }
6667
6668
6669 static int nl80211_flush_pmkid(void *priv)
6670 {
6671         struct i802_bss *bss = priv;
6672         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6673         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6674 }
6675
6676
6677 static void clean_survey_results(struct survey_results *survey_results)
6678 {
6679         struct freq_survey *survey, *tmp;
6680
6681         if (dl_list_empty(&survey_results->survey_list))
6682                 return;
6683
6684         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6685                               struct freq_survey, list) {
6686                 dl_list_del(&survey->list);
6687                 os_free(survey);
6688         }
6689 }
6690
6691
6692 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6693                        struct dl_list *survey_list)
6694 {
6695         struct freq_survey *survey;
6696
6697         survey = os_zalloc(sizeof(struct freq_survey));
6698         if  (!survey)
6699                 return;
6700
6701         survey->ifidx = ifidx;
6702         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6703         survey->filled = 0;
6704
6705         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6706                 survey->nf = (int8_t)
6707                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6708                 survey->filled |= SURVEY_HAS_NF;
6709         }
6710
6711         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6712                 survey->channel_time =
6713                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6714                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6715         }
6716
6717         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6718                 survey->channel_time_busy =
6719                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6720                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6721         }
6722
6723         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6724                 survey->channel_time_rx =
6725                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6726                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6727         }
6728
6729         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6730                 survey->channel_time_tx =
6731                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6732                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6733         }
6734
6735         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)",
6736                    survey->freq,
6737                    survey->nf,
6738                    (unsigned long int) survey->channel_time,
6739                    (unsigned long int) survey->channel_time_busy,
6740                    (unsigned long int) survey->channel_time_tx,
6741                    (unsigned long int) survey->channel_time_rx,
6742                    survey->filled);
6743
6744         dl_list_add_tail(survey_list, &survey->list);
6745 }
6746
6747
6748 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6749                            unsigned int freq_filter)
6750 {
6751         if (!freq_filter)
6752                 return 1;
6753
6754         return freq_filter == surveyed_freq;
6755 }
6756
6757
6758 static int survey_handler(struct nl_msg *msg, void *arg)
6759 {
6760         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6761         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6762         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6763         struct survey_results *survey_results;
6764         u32 surveyed_freq = 0;
6765         u32 ifidx;
6766
6767         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6768                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6769                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6770         };
6771
6772         survey_results = (struct survey_results *) arg;
6773
6774         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6775                   genlmsg_attrlen(gnlh, 0), NULL);
6776
6777         if (!tb[NL80211_ATTR_IFINDEX])
6778                 return NL_SKIP;
6779
6780         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6781
6782         if (!tb[NL80211_ATTR_SURVEY_INFO])
6783                 return NL_SKIP;
6784
6785         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6786                              tb[NL80211_ATTR_SURVEY_INFO],
6787                              survey_policy))
6788                 return NL_SKIP;
6789
6790         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6791                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6792                 return NL_SKIP;
6793         }
6794
6795         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6796
6797         if (!check_survey_ok(sinfo, surveyed_freq,
6798                              survey_results->freq_filter))
6799                 return NL_SKIP;
6800
6801         if (survey_results->freq_filter &&
6802             survey_results->freq_filter != surveyed_freq) {
6803                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6804                            surveyed_freq);
6805                 return NL_SKIP;
6806         }
6807
6808         add_survey(sinfo, ifidx, &survey_results->survey_list);
6809
6810         return NL_SKIP;
6811 }
6812
6813
6814 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6815 {
6816         struct i802_bss *bss = priv;
6817         struct wpa_driver_nl80211_data *drv = bss->drv;
6818         struct nl_msg *msg;
6819         int err;
6820         union wpa_event_data data;
6821         struct survey_results *survey_results;
6822
6823         os_memset(&data, 0, sizeof(data));
6824         survey_results = &data.survey_results;
6825
6826         dl_list_init(&survey_results->survey_list);
6827
6828         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6829         if (!msg)
6830                 return -ENOBUFS;
6831
6832         if (freq)
6833                 data.survey_results.freq_filter = freq;
6834
6835         do {
6836                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6837                 err = send_and_recv_msgs(drv, msg, survey_handler,
6838                                          survey_results);
6839         } while (err > 0);
6840
6841         if (err)
6842                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6843         else
6844                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6845
6846         clean_survey_results(survey_results);
6847         return err;
6848 }
6849
6850
6851 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
6852                                    const u8 *kck, size_t kck_len,
6853                                    const u8 *replay_ctr)
6854 {
6855         struct i802_bss *bss = priv;
6856         struct wpa_driver_nl80211_data *drv = bss->drv;
6857         struct nlattr *replay_nested;
6858         struct nl_msg *msg;
6859         int ret;
6860
6861         if (!drv->set_rekey_offload)
6862                 return;
6863
6864         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6865         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6866             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6867             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
6868             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
6869             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6870                     replay_ctr)) {
6871                 nl80211_nlmsg_clear(msg);
6872                 nlmsg_free(msg);
6873                 return;
6874         }
6875
6876         nla_nest_end(msg, replay_nested);
6877
6878         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6879         if (ret == -EOPNOTSUPP) {
6880                 wpa_printf(MSG_DEBUG,
6881                            "nl80211: Driver does not support rekey offload");
6882                 drv->set_rekey_offload = 0;
6883         }
6884 }
6885
6886
6887 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6888                                     const u8 *addr, int qos)
6889 {
6890         /* send data frame to poll STA and check whether
6891          * this frame is ACKed */
6892         struct {
6893                 struct ieee80211_hdr hdr;
6894                 u16 qos_ctl;
6895         } STRUCT_PACKED nulldata;
6896         size_t size;
6897
6898         /* Send data frame to poll STA and check whether this frame is ACKed */
6899
6900         os_memset(&nulldata, 0, sizeof(nulldata));
6901
6902         if (qos) {
6903                 nulldata.hdr.frame_control =
6904                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6905                                      WLAN_FC_STYPE_QOS_NULL);
6906                 size = sizeof(nulldata);
6907         } else {
6908                 nulldata.hdr.frame_control =
6909                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6910                                      WLAN_FC_STYPE_NULLFUNC);
6911                 size = sizeof(struct ieee80211_hdr);
6912         }
6913
6914         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6915         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6916         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6917         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6918
6919         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6920                                          0, 0) < 0)
6921                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6922                            "send poll frame");
6923 }
6924
6925 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6926                                 int qos)
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         if (!drv->poll_command_supported) {
6934                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6935                 return;
6936         }
6937
6938         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6939             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6940                 nlmsg_free(msg);
6941                 return;
6942         }
6943
6944         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6945         if (ret < 0) {
6946                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
6947                            MACSTR " failed: ret=%d (%s)",
6948                            MAC2STR(addr), ret, strerror(-ret));
6949         }
6950 }
6951
6952
6953 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
6954 {
6955         struct nl_msg *msg;
6956
6957         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
6958             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
6959                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
6960                 nlmsg_free(msg);
6961                 return -ENOBUFS;
6962         }
6963         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6964 }
6965
6966
6967 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
6968                                      int ctwindow)
6969 {
6970         struct i802_bss *bss = priv;
6971
6972         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
6973                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
6974
6975         if (opp_ps != -1 || ctwindow != -1) {
6976 #ifdef ANDROID_P2P
6977                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
6978 #else /* ANDROID_P2P */
6979                 return -1; /* Not yet supported */
6980 #endif /* ANDROID_P2P */
6981         }
6982
6983         if (legacy_ps == -1)
6984                 return 0;
6985         if (legacy_ps != 0 && legacy_ps != 1)
6986                 return -1; /* Not yet supported */
6987
6988         return nl80211_set_power_save(bss, legacy_ps);
6989 }
6990
6991
6992 static int nl80211_start_radar_detection(void *priv,
6993                                          struct hostapd_freq_params *freq)
6994 {
6995         struct i802_bss *bss = priv;
6996         struct wpa_driver_nl80211_data *drv = bss->drv;
6997         struct nl_msg *msg;
6998         int ret;
6999
7000         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)",
7001                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7002                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7003
7004         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7005                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7006                            "detection");
7007                 return -1;
7008         }
7009
7010         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7011             nl80211_put_freq_params(msg, freq) < 0) {
7012                 nlmsg_free(msg);
7013                 return -1;
7014         }
7015
7016         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7017         if (ret == 0)
7018                 return 0;
7019         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7020                    "%d (%s)", ret, strerror(-ret));
7021         return -1;
7022 }
7023
7024 #ifdef CONFIG_TDLS
7025
7026 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7027                                   u8 dialog_token, u16 status_code,
7028                                   u32 peer_capab, int initiator, const u8 *buf,
7029                                   size_t len)
7030 {
7031         struct i802_bss *bss = priv;
7032         struct wpa_driver_nl80211_data *drv = bss->drv;
7033         struct nl_msg *msg;
7034
7035         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7036                 return -EOPNOTSUPP;
7037
7038         if (!dst)
7039                 return -EINVAL;
7040
7041         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7042             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7043             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7044             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7045             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7046                 goto fail;
7047         if (peer_capab) {
7048                 /*
7049                  * The internal enum tdls_peer_capability definition is
7050                  * currently identical with the nl80211 enum
7051                  * nl80211_tdls_peer_capability, so no conversion is needed
7052                  * here.
7053                  */
7054                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7055                                 peer_capab))
7056                         goto fail;
7057         }
7058         if ((initiator &&
7059              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7060             nla_put(msg, NL80211_ATTR_IE, len, buf))
7061                 goto fail;
7062
7063         return send_and_recv_msgs(drv, msg, NULL, NULL);
7064
7065 fail:
7066         nlmsg_free(msg);
7067         return -ENOBUFS;
7068 }
7069
7070
7071 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7072 {
7073         struct i802_bss *bss = priv;
7074         struct wpa_driver_nl80211_data *drv = bss->drv;
7075         struct nl_msg *msg;
7076         enum nl80211_tdls_operation nl80211_oper;
7077
7078         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7079                 return -EOPNOTSUPP;
7080
7081         switch (oper) {
7082         case TDLS_DISCOVERY_REQ:
7083                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7084                 break;
7085         case TDLS_SETUP:
7086                 nl80211_oper = NL80211_TDLS_SETUP;
7087                 break;
7088         case TDLS_TEARDOWN:
7089                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7090                 break;
7091         case TDLS_ENABLE_LINK:
7092                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7093                 break;
7094         case TDLS_DISABLE_LINK:
7095                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7096                 break;
7097         case TDLS_ENABLE:
7098                 return 0;
7099         case TDLS_DISABLE:
7100                 return 0;
7101         default:
7102                 return -EINVAL;
7103         }
7104
7105         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7106             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7107             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7108                 nlmsg_free(msg);
7109                 return -ENOBUFS;
7110         }
7111
7112         return send_and_recv_msgs(drv, msg, NULL, NULL);
7113 }
7114
7115
7116 static int
7117 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7118                                    const struct hostapd_freq_params *params)
7119 {
7120         struct i802_bss *bss = priv;
7121         struct wpa_driver_nl80211_data *drv = bss->drv;
7122         struct nl_msg *msg;
7123         int ret = -ENOBUFS;
7124
7125         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7126             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7127                 return -EOPNOTSUPP;
7128
7129         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7130                    " oper_class=%u freq=%u",
7131                    MAC2STR(addr), oper_class, params->freq);
7132         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7133         if (!msg ||
7134             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7135             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7136             (ret = nl80211_put_freq_params(msg, params))) {
7137                 nlmsg_free(msg);
7138                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7139                 return ret;
7140         }
7141
7142         return send_and_recv_msgs(drv, msg, NULL, NULL);
7143 }
7144
7145
7146 static int
7147 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7148 {
7149         struct i802_bss *bss = priv;
7150         struct wpa_driver_nl80211_data *drv = bss->drv;
7151         struct nl_msg *msg;
7152
7153         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7154             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7155                 return -EOPNOTSUPP;
7156
7157         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7158                    MAC2STR(addr));
7159         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7160         if (!msg ||
7161             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7162                 nlmsg_free(msg);
7163                 wpa_printf(MSG_DEBUG,
7164                            "nl80211: Could not build TDLS cancel chan switch");
7165                 return -ENOBUFS;
7166         }
7167
7168         return send_and_recv_msgs(drv, msg, NULL, NULL);
7169 }
7170
7171 #endif /* CONFIG TDLS */
7172
7173
7174 static int driver_nl80211_set_key(const char *ifname, void *priv,
7175                                   enum wpa_alg alg, const u8 *addr,
7176                                   int key_idx, int set_tx,
7177                                   const u8 *seq, size_t seq_len,
7178                                   const u8 *key, size_t key_len)
7179 {
7180         struct i802_bss *bss = priv;
7181         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7182                                           set_tx, seq, seq_len, key, key_len);
7183 }
7184
7185
7186 static int driver_nl80211_scan2(void *priv,
7187                                 struct wpa_driver_scan_params *params)
7188 {
7189         struct i802_bss *bss = priv;
7190         return wpa_driver_nl80211_scan(bss, params);
7191 }
7192
7193
7194 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7195                                          int reason_code)
7196 {
7197         struct i802_bss *bss = priv;
7198         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7199 }
7200
7201
7202 static int driver_nl80211_authenticate(void *priv,
7203                                        struct wpa_driver_auth_params *params)
7204 {
7205         struct i802_bss *bss = priv;
7206         return wpa_driver_nl80211_authenticate(bss, params);
7207 }
7208
7209
7210 static void driver_nl80211_deinit(void *priv)
7211 {
7212         struct i802_bss *bss = priv;
7213         wpa_driver_nl80211_deinit(bss);
7214 }
7215
7216
7217 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7218                                     const char *ifname)
7219 {
7220         struct i802_bss *bss = priv;
7221         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7222 }
7223
7224
7225 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7226                                     size_t data_len, int noack)
7227 {
7228         struct i802_bss *bss = priv;
7229         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7230                                             0, 0, 0, 0);
7231 }
7232
7233
7234 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7235 {
7236         struct i802_bss *bss = priv;
7237         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7238 }
7239
7240
7241 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7242                                        const char *ifname, int vlan_id)
7243 {
7244         struct i802_bss *bss = priv;
7245         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7246 }
7247
7248
7249 static int driver_nl80211_read_sta_data(void *priv,
7250                                         struct hostap_sta_driver_data *data,
7251                                         const u8 *addr)
7252 {
7253         struct i802_bss *bss = priv;
7254         return i802_read_sta_data(bss, data, addr);
7255 }
7256
7257
7258 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7259                                       unsigned int wait_time,
7260                                       const u8 *dst, const u8 *src,
7261                                       const u8 *bssid,
7262                                       const u8 *data, size_t data_len,
7263                                       int no_cck)
7264 {
7265         struct i802_bss *bss = priv;
7266         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7267                                               bssid, data, data_len, no_cck);
7268 }
7269
7270
7271 static int driver_nl80211_probe_req_report(void *priv, int report)
7272 {
7273         struct i802_bss *bss = priv;
7274         return wpa_driver_nl80211_probe_req_report(bss, report);
7275 }
7276
7277
7278 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7279                                             const u8 *ies, size_t ies_len)
7280 {
7281         int ret;
7282         struct nl_msg *msg;
7283         struct i802_bss *bss = priv;
7284         struct wpa_driver_nl80211_data *drv = bss->drv;
7285         u16 mdid = WPA_GET_LE16(md);
7286
7287         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7288         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7289             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7290             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7291                 nlmsg_free(msg);
7292                 return -ENOBUFS;
7293         }
7294
7295         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7296         if (ret) {
7297                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7298                            "err=%d (%s)", ret, strerror(-ret));
7299         }
7300
7301         return ret;
7302 }
7303
7304
7305 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7306 {
7307         struct i802_bss *bss = priv;
7308         struct wpa_driver_nl80211_data *drv = bss->drv;
7309
7310         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7311                 return NULL;
7312
7313         return bss->addr;
7314 }
7315
7316
7317 static const char * scan_state_str(enum scan_states scan_state)
7318 {
7319         switch (scan_state) {
7320         case NO_SCAN:
7321                 return "NO_SCAN";
7322         case SCAN_REQUESTED:
7323                 return "SCAN_REQUESTED";
7324         case SCAN_STARTED:
7325                 return "SCAN_STARTED";
7326         case SCAN_COMPLETED:
7327                 return "SCAN_COMPLETED";
7328         case SCAN_ABORTED:
7329                 return "SCAN_ABORTED";
7330         case SCHED_SCAN_STARTED:
7331                 return "SCHED_SCAN_STARTED";
7332         case SCHED_SCAN_STOPPED:
7333                 return "SCHED_SCAN_STOPPED";
7334         case SCHED_SCAN_RESULTS:
7335                 return "SCHED_SCAN_RESULTS";
7336         }
7337
7338         return "??";
7339 }
7340
7341
7342 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7343 {
7344         struct i802_bss *bss = priv;
7345         struct wpa_driver_nl80211_data *drv = bss->drv;
7346         int res;
7347         char *pos, *end;
7348
7349         pos = buf;
7350         end = buf + buflen;
7351
7352         res = os_snprintf(pos, end - pos,
7353                           "ifindex=%d\n"
7354                           "ifname=%s\n"
7355                           "brname=%s\n"
7356                           "addr=" MACSTR "\n"
7357                           "freq=%d\n"
7358                           "%s%s%s%s%s",
7359                           bss->ifindex,
7360                           bss->ifname,
7361                           bss->brname,
7362                           MAC2STR(bss->addr),
7363                           bss->freq,
7364                           bss->beacon_set ? "beacon_set=1\n" : "",
7365                           bss->added_if_into_bridge ?
7366                           "added_if_into_bridge=1\n" : "",
7367                           bss->added_bridge ? "added_bridge=1\n" : "",
7368                           bss->in_deinit ? "in_deinit=1\n" : "",
7369                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7370         if (os_snprintf_error(end - pos, res))
7371                 return pos - buf;
7372         pos += res;
7373
7374         if (bss->wdev_id_set) {
7375                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7376                                   (unsigned long long) bss->wdev_id);
7377                 if (os_snprintf_error(end - pos, res))
7378                         return pos - buf;
7379                 pos += res;
7380         }
7381
7382         res = os_snprintf(pos, end - pos,
7383                           "phyname=%s\n"
7384                           "perm_addr=" MACSTR "\n"
7385                           "drv_ifindex=%d\n"
7386                           "operstate=%d\n"
7387                           "scan_state=%s\n"
7388                           "auth_bssid=" MACSTR "\n"
7389                           "auth_attempt_bssid=" MACSTR "\n"
7390                           "bssid=" MACSTR "\n"
7391                           "prev_bssid=" MACSTR "\n"
7392                           "associated=%d\n"
7393                           "assoc_freq=%u\n"
7394                           "monitor_sock=%d\n"
7395                           "monitor_ifidx=%d\n"
7396                           "monitor_refcount=%d\n"
7397                           "last_mgmt_freq=%u\n"
7398                           "eapol_tx_sock=%d\n"
7399                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7400                           drv->phyname,
7401                           MAC2STR(drv->perm_addr),
7402                           drv->ifindex,
7403                           drv->operstate,
7404                           scan_state_str(drv->scan_state),
7405                           MAC2STR(drv->auth_bssid),
7406                           MAC2STR(drv->auth_attempt_bssid),
7407                           MAC2STR(drv->bssid),
7408                           MAC2STR(drv->prev_bssid),
7409                           drv->associated,
7410                           drv->assoc_freq,
7411                           drv->monitor_sock,
7412                           drv->monitor_ifidx,
7413                           drv->monitor_refcount,
7414                           drv->last_mgmt_freq,
7415                           drv->eapol_tx_sock,
7416                           drv->ignore_if_down_event ?
7417                           "ignore_if_down_event=1\n" : "",
7418                           drv->scan_complete_events ?
7419                           "scan_complete_events=1\n" : "",
7420                           drv->disabled_11b_rates ?
7421                           "disabled_11b_rates=1\n" : "",
7422                           drv->pending_remain_on_chan ?
7423                           "pending_remain_on_chan=1\n" : "",
7424                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7425                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7426                           drv->poll_command_supported ?
7427                           "poll_command_supported=1\n" : "",
7428                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7429                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7430                           drv->retry_auth ? "retry_auth=1\n" : "",
7431                           drv->use_monitor ? "use_monitor=1\n" : "",
7432                           drv->ignore_next_local_disconnect ?
7433                           "ignore_next_local_disconnect=1\n" : "",
7434                           drv->ignore_next_local_deauth ?
7435                           "ignore_next_local_deauth=1\n" : "");
7436         if (os_snprintf_error(end - pos, res))
7437                 return pos - buf;
7438         pos += res;
7439
7440         if (drv->has_capability) {
7441                 res = os_snprintf(pos, end - pos,
7442                                   "capa.key_mgmt=0x%x\n"
7443                                   "capa.enc=0x%x\n"
7444                                   "capa.auth=0x%x\n"
7445                                   "capa.flags=0x%llx\n"
7446                                   "capa.rrm_flags=0x%x\n"
7447                                   "capa.max_scan_ssids=%d\n"
7448                                   "capa.max_sched_scan_ssids=%d\n"
7449                                   "capa.sched_scan_supported=%d\n"
7450                                   "capa.max_match_sets=%d\n"
7451                                   "capa.max_remain_on_chan=%u\n"
7452                                   "capa.max_stations=%u\n"
7453                                   "capa.probe_resp_offloads=0x%x\n"
7454                                   "capa.max_acl_mac_addrs=%u\n"
7455                                   "capa.num_multichan_concurrent=%u\n"
7456                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7457                                   "capa.mac_addr_rand_scan_supported=%d\n",
7458                                   drv->capa.key_mgmt,
7459                                   drv->capa.enc,
7460                                   drv->capa.auth,
7461                                   (unsigned long long) drv->capa.flags,
7462                                   drv->capa.rrm_flags,
7463                                   drv->capa.max_scan_ssids,
7464                                   drv->capa.max_sched_scan_ssids,
7465                                   drv->capa.sched_scan_supported,
7466                                   drv->capa.max_match_sets,
7467                                   drv->capa.max_remain_on_chan,
7468                                   drv->capa.max_stations,
7469                                   drv->capa.probe_resp_offloads,
7470                                   drv->capa.max_acl_mac_addrs,
7471                                   drv->capa.num_multichan_concurrent,
7472                                   drv->capa.mac_addr_rand_sched_scan_supported,
7473                                   drv->capa.mac_addr_rand_scan_supported);
7474                 if (os_snprintf_error(end - pos, res))
7475                         return pos - buf;
7476                 pos += res;
7477         }
7478
7479         return pos - buf;
7480 }
7481
7482
7483 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7484 {
7485         if ((settings->head &&
7486              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7487                      settings->head_len, settings->head)) ||
7488             (settings->tail &&
7489              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7490                      settings->tail_len, settings->tail)) ||
7491             (settings->beacon_ies &&
7492              nla_put(msg, NL80211_ATTR_IE,
7493                      settings->beacon_ies_len, settings->beacon_ies)) ||
7494             (settings->proberesp_ies &&
7495              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7496                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7497             (settings->assocresp_ies &&
7498              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7499                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7500             (settings->probe_resp &&
7501              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7502                      settings->probe_resp_len, settings->probe_resp)))
7503                 return -ENOBUFS;
7504
7505         return 0;
7506 }
7507
7508
7509 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7510 {
7511         struct nl_msg *msg;
7512         struct i802_bss *bss = priv;
7513         struct wpa_driver_nl80211_data *drv = bss->drv;
7514         struct nlattr *beacon_csa;
7515         int ret = -ENOBUFS;
7516
7517         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7518                    settings->cs_count, settings->block_tx,
7519                    settings->freq_params.freq, settings->freq_params.bandwidth,
7520                    settings->freq_params.center_freq1,
7521                    settings->freq_params.center_freq2);
7522
7523         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7524                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7525                 return -EOPNOTSUPP;
7526         }
7527
7528         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7529             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7530                 return -EOPNOTSUPP;
7531
7532         /* check settings validity */
7533         if (!settings->beacon_csa.tail ||
7534             ((settings->beacon_csa.tail_len <=
7535               settings->counter_offset_beacon) ||
7536              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7537               settings->cs_count)))
7538                 return -EINVAL;
7539
7540         if (settings->beacon_csa.probe_resp &&
7541             ((settings->beacon_csa.probe_resp_len <=
7542               settings->counter_offset_presp) ||
7543              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7544               settings->cs_count)))
7545                 return -EINVAL;
7546
7547         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7548             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7549                         settings->cs_count) ||
7550             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7551             (settings->block_tx &&
7552              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7553                 goto error;
7554
7555         /* beacon_after params */
7556         ret = set_beacon_data(msg, &settings->beacon_after);
7557         if (ret)
7558                 goto error;
7559
7560         /* beacon_csa params */
7561         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7562         if (!beacon_csa)
7563                 goto fail;
7564
7565         ret = set_beacon_data(msg, &settings->beacon_csa);
7566         if (ret)
7567                 goto error;
7568
7569         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7570                         settings->counter_offset_beacon) ||
7571             (settings->beacon_csa.probe_resp &&
7572              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7573                          settings->counter_offset_presp)))
7574                 goto fail;
7575
7576         nla_nest_end(msg, beacon_csa);
7577         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7578         if (ret) {
7579                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7580                            ret, strerror(-ret));
7581         }
7582         return ret;
7583
7584 fail:
7585         ret = -ENOBUFS;
7586 error:
7587         nlmsg_free(msg);
7588         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7589         return ret;
7590 }
7591
7592
7593 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7594                           u8 user_priority, u16 admitted_time)
7595 {
7596         struct i802_bss *bss = priv;
7597         struct wpa_driver_nl80211_data *drv = bss->drv;
7598         struct nl_msg *msg;
7599         int ret;
7600
7601         wpa_printf(MSG_DEBUG,
7602                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7603                    tsid, admitted_time, user_priority);
7604
7605         if (!is_sta_interface(drv->nlmode))
7606                 return -ENOTSUP;
7607
7608         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7609         if (!msg ||
7610             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7611             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7612             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7613             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7614                 nlmsg_free(msg);
7615                 return -ENOBUFS;
7616         }
7617
7618         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7619         if (ret)
7620                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7621                            ret, strerror(-ret));
7622         return ret;
7623 }
7624
7625
7626 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7627 {
7628         struct i802_bss *bss = priv;
7629         struct wpa_driver_nl80211_data *drv = bss->drv;
7630         struct nl_msg *msg;
7631         int ret;
7632
7633         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7634
7635         if (!is_sta_interface(drv->nlmode))
7636                 return -ENOTSUP;
7637
7638         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7639             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7640             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7641                 nlmsg_free(msg);
7642                 return -ENOBUFS;
7643         }
7644
7645         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7646         if (ret)
7647                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7648                            ret, strerror(-ret));
7649         return ret;
7650 }
7651
7652
7653 #ifdef CONFIG_TESTING_OPTIONS
7654 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7655 {
7656         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7657         struct wpabuf *buf = arg;
7658
7659         if (!buf)
7660                 return NL_SKIP;
7661
7662         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7663                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7664                 return NL_SKIP;
7665         }
7666
7667         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7668                         genlmsg_attrlen(gnlh, 0));
7669
7670         return NL_SKIP;
7671 }
7672 #endif /* CONFIG_TESTING_OPTIONS */
7673
7674
7675 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7676 {
7677         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7678         struct nlattr *nl_vendor_reply, *nl;
7679         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7680         struct wpabuf *buf = arg;
7681         int rem;
7682
7683         if (!buf)
7684                 return NL_SKIP;
7685
7686         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7687                   genlmsg_attrlen(gnlh, 0), NULL);
7688         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7689
7690         if (!nl_vendor_reply)
7691                 return NL_SKIP;
7692
7693         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7694                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7695                 return NL_SKIP;
7696         }
7697
7698         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7699                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7700         }
7701
7702         return NL_SKIP;
7703 }
7704
7705
7706 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7707                               unsigned int subcmd, const u8 *data,
7708                               size_t data_len, struct wpabuf *buf)
7709 {
7710         struct i802_bss *bss = priv;
7711         struct wpa_driver_nl80211_data *drv = bss->drv;
7712         struct nl_msg *msg;
7713         int ret;
7714
7715 #ifdef CONFIG_TESTING_OPTIONS
7716         if (vendor_id == 0xffffffff) {
7717                 msg = nlmsg_alloc();
7718                 if (!msg)
7719                         return -ENOMEM;
7720
7721                 nl80211_cmd(drv, msg, 0, subcmd);
7722                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7723                     0)
7724                         goto fail;
7725                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7726                 if (ret)
7727                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7728                                    ret);
7729                 return ret;
7730         }
7731 #endif /* CONFIG_TESTING_OPTIONS */
7732
7733         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7734             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7735             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7736             (data &&
7737              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7738                 goto fail;
7739
7740         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7741         if (ret)
7742                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7743                            ret);
7744         return ret;
7745
7746 fail:
7747         nlmsg_free(msg);
7748         return -ENOBUFS;
7749 }
7750
7751
7752 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7753                                u8 qos_map_set_len)
7754 {
7755         struct i802_bss *bss = priv;
7756         struct wpa_driver_nl80211_data *drv = bss->drv;
7757         struct nl_msg *msg;
7758         int ret;
7759
7760         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7761                     qos_map_set, qos_map_set_len);
7762
7763         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7764             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7765                 nlmsg_free(msg);
7766                 return -ENOBUFS;
7767         }
7768
7769         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7770         if (ret)
7771                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7772
7773         return ret;
7774 }
7775
7776
7777 static int nl80211_set_wowlan(void *priv,
7778                               const struct wowlan_triggers *triggers)
7779 {
7780         struct i802_bss *bss = priv;
7781         struct wpa_driver_nl80211_data *drv = bss->drv;
7782         struct nl_msg *msg;
7783         struct nlattr *wowlan_triggers;
7784         int ret;
7785
7786         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7787
7788         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
7789             !(wowlan_triggers = nla_nest_start(msg,
7790                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7791             (triggers->any &&
7792              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7793             (triggers->disconnect &&
7794              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7795             (triggers->magic_pkt &&
7796              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7797             (triggers->gtk_rekey_failure &&
7798              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7799             (triggers->eap_identity_req &&
7800              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7801             (triggers->four_way_handshake &&
7802              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7803             (triggers->rfkill_release &&
7804              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7805                 nlmsg_free(msg);
7806                 return -ENOBUFS;
7807         }
7808
7809         nla_nest_end(msg, wowlan_triggers);
7810
7811         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7812         if (ret)
7813                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7814
7815         return ret;
7816 }
7817
7818
7819 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7820 {
7821         struct i802_bss *bss = priv;
7822         struct wpa_driver_nl80211_data *drv = bss->drv;
7823         struct nl_msg *msg;
7824         struct nlattr *params;
7825
7826         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7827
7828         if (!drv->roaming_vendor_cmd_avail) {
7829                 wpa_printf(MSG_DEBUG,
7830                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7831                 return -1;
7832         }
7833
7834         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7835             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7836             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7837                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7838             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7839             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7840                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7841                         QCA_ROAMING_NOT_ALLOWED) ||
7842             (bssid &&
7843              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7844                 nlmsg_free(msg);
7845                 return -1;
7846         }
7847         nla_nest_end(msg, params);
7848
7849         return send_and_recv_msgs(drv, msg, NULL, NULL);
7850 }
7851
7852
7853 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7854 {
7855         struct i802_bss *bss = priv;
7856         struct wpa_driver_nl80211_data *drv = bss->drv;
7857         int new_addr = addr != NULL;
7858
7859         if (!addr)
7860                 addr = drv->perm_addr;
7861
7862         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7863                 return -1;
7864
7865         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7866         {
7867                 wpa_printf(MSG_DEBUG,
7868                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7869                            bss->ifname, MAC2STR(addr));
7870                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7871                                           1) < 0) {
7872                         wpa_printf(MSG_DEBUG,
7873                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7874                 }
7875                 return -1;
7876         }
7877
7878         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7879                    bss->ifname, MAC2STR(addr));
7880         drv->addr_changed = new_addr;
7881         os_memcpy(bss->addr, addr, ETH_ALEN);
7882
7883         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7884         {
7885                 wpa_printf(MSG_DEBUG,
7886                            "nl80211: Could not restore interface UP after set_mac_addr");
7887         }
7888
7889         return 0;
7890 }
7891
7892
7893 #ifdef CONFIG_MESH
7894
7895 static int wpa_driver_nl80211_init_mesh(void *priv)
7896 {
7897         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7898                 wpa_printf(MSG_INFO,
7899                            "nl80211: Failed to set interface into mesh mode");
7900                 return -1;
7901         }
7902         return 0;
7903 }
7904
7905
7906 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
7907                                size_t mesh_id_len)
7908 {
7909         if (mesh_id) {
7910                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
7911                                   mesh_id, mesh_id_len);
7912                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
7913         }
7914
7915         return 0;
7916 }
7917
7918
7919 static int nl80211_join_mesh(struct i802_bss *bss,
7920                              struct wpa_driver_mesh_join_params *params)
7921 {
7922         struct wpa_driver_nl80211_data *drv = bss->drv;
7923         struct nl_msg *msg;
7924         struct nlattr *container;
7925         int ret = -1;
7926
7927         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7928         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7929         if (!msg ||
7930             nl80211_put_freq_params(msg, &params->freq) ||
7931             nl80211_put_basic_rates(msg, params->basic_rates) ||
7932             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
7933             nl80211_put_beacon_int(msg, params->beacon_int))
7934                 goto fail;
7935
7936         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7937
7938         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7939         if (!container)
7940                 goto fail;
7941
7942         if (params->ies) {
7943                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7944                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7945                             params->ies))
7946                         goto fail;
7947         }
7948         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
7949         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
7950                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
7951                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
7952                         goto fail;
7953         }
7954         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
7955             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
7956                 goto fail;
7957         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
7958             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
7959                 goto fail;
7960         nla_nest_end(msg, container);
7961
7962         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
7963         if (!container)
7964                 goto fail;
7965
7966         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
7967             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
7968                 goto fail;
7969         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
7970             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7971                         params->max_peer_links))
7972                 goto fail;
7973
7974         /*
7975          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
7976          * the timer could disconnect stations even in that case.
7977          */
7978         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7979                         params->conf.peer_link_timeout)) {
7980                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
7981                 goto fail;
7982         }
7983
7984         nla_nest_end(msg, container);
7985
7986         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7987         msg = NULL;
7988         if (ret) {
7989                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
7990                            ret, strerror(-ret));
7991                 goto fail;
7992         }
7993         ret = 0;
7994         bss->freq = params->freq.freq;
7995         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
7996
7997 fail:
7998         nlmsg_free(msg);
7999         return ret;
8000 }
8001
8002
8003 static int
8004 wpa_driver_nl80211_join_mesh(void *priv,
8005                              struct wpa_driver_mesh_join_params *params)
8006 {
8007         struct i802_bss *bss = priv;
8008         int ret, timeout;
8009
8010         timeout = params->conf.peer_link_timeout;
8011
8012         /* Disable kernel inactivity timer */
8013         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8014                 params->conf.peer_link_timeout = 0;
8015
8016         ret = nl80211_join_mesh(bss, params);
8017         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8018                 wpa_printf(MSG_DEBUG,
8019                            "nl80211: Mesh join retry for peer_link_timeout");
8020                 /*
8021                  * Old kernel does not support setting
8022                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8023                  * into future from peer_link_timeout.
8024                  */
8025                 params->conf.peer_link_timeout = timeout + 60;
8026                 ret = nl80211_join_mesh(priv, params);
8027         }
8028
8029         params->conf.peer_link_timeout = timeout;
8030         return ret;
8031 }
8032
8033
8034 static int wpa_driver_nl80211_leave_mesh(void *priv)
8035 {
8036         struct i802_bss *bss = priv;
8037         struct wpa_driver_nl80211_data *drv = bss->drv;
8038         struct nl_msg *msg;
8039         int ret;
8040
8041         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8042         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8043         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8044         if (ret) {
8045                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8046                            ret, strerror(-ret));
8047         } else {
8048                 wpa_printf(MSG_DEBUG,
8049                            "nl80211: mesh leave request send successfully");
8050         }
8051
8052         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8053                                         NL80211_IFTYPE_STATION)) {
8054                 wpa_printf(MSG_INFO,
8055                            "nl80211: Failed to set interface into station mode");
8056         }
8057         return ret;
8058 }
8059
8060 #endif /* CONFIG_MESH */
8061
8062
8063 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8064                                       const u8 *ipaddr, int prefixlen,
8065                                       const u8 *addr)
8066 {
8067 #ifdef CONFIG_LIBNL3_ROUTE
8068         struct i802_bss *bss = priv;
8069         struct wpa_driver_nl80211_data *drv = bss->drv;
8070         struct rtnl_neigh *rn;
8071         struct nl_addr *nl_ipaddr = NULL;
8072         struct nl_addr *nl_lladdr = NULL;
8073         int family, addrsize;
8074         int res;
8075
8076         if (!ipaddr || prefixlen == 0 || !addr)
8077                 return -EINVAL;
8078
8079         if (bss->br_ifindex == 0) {
8080                 wpa_printf(MSG_DEBUG,
8081                            "nl80211: bridge must be set before adding an ip neigh to it");
8082                 return -1;
8083         }
8084
8085         if (!drv->rtnl_sk) {
8086                 wpa_printf(MSG_DEBUG,
8087                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8088                 return -1;
8089         }
8090
8091         if (version == 4) {
8092                 family = AF_INET;
8093                 addrsize = 4;
8094         } else if (version == 6) {
8095                 family = AF_INET6;
8096                 addrsize = 16;
8097         } else {
8098                 return -EINVAL;
8099         }
8100
8101         rn = rtnl_neigh_alloc();
8102         if (rn == NULL)
8103                 return -ENOMEM;
8104
8105         /* set the destination ip address for neigh */
8106         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8107         if (nl_ipaddr == NULL) {
8108                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8109                 res = -ENOMEM;
8110                 goto errout;
8111         }
8112         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8113         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8114         if (res) {
8115                 wpa_printf(MSG_DEBUG,
8116                            "nl80211: neigh set destination addr failed");
8117                 goto errout;
8118         }
8119
8120         /* set the corresponding lladdr for neigh */
8121         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8122         if (nl_lladdr == NULL) {
8123                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8124                 res = -ENOMEM;
8125                 goto errout;
8126         }
8127         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8128
8129         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8130         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8131
8132         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8133         if (res) {
8134                 wpa_printf(MSG_DEBUG,
8135                            "nl80211: Adding bridge ip neigh failed: %s",
8136                            strerror(errno));
8137         }
8138 errout:
8139         if (nl_lladdr)
8140                 nl_addr_put(nl_lladdr);
8141         if (nl_ipaddr)
8142                 nl_addr_put(nl_ipaddr);
8143         if (rn)
8144                 rtnl_neigh_put(rn);
8145         return res;
8146 #else /* CONFIG_LIBNL3_ROUTE */
8147         return -1;
8148 #endif /* CONFIG_LIBNL3_ROUTE */
8149 }
8150
8151
8152 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8153                                          const u8 *ipaddr)
8154 {
8155 #ifdef CONFIG_LIBNL3_ROUTE
8156         struct i802_bss *bss = priv;
8157         struct wpa_driver_nl80211_data *drv = bss->drv;
8158         struct rtnl_neigh *rn;
8159         struct nl_addr *nl_ipaddr;
8160         int family, addrsize;
8161         int res;
8162
8163         if (!ipaddr)
8164                 return -EINVAL;
8165
8166         if (version == 4) {
8167                 family = AF_INET;
8168                 addrsize = 4;
8169         } else if (version == 6) {
8170                 family = AF_INET6;
8171                 addrsize = 16;
8172         } else {
8173                 return -EINVAL;
8174         }
8175
8176         if (bss->br_ifindex == 0) {
8177                 wpa_printf(MSG_DEBUG,
8178                            "nl80211: bridge must be set to delete an ip neigh");
8179                 return -1;
8180         }
8181
8182         if (!drv->rtnl_sk) {
8183                 wpa_printf(MSG_DEBUG,
8184                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8185                 return -1;
8186         }
8187
8188         rn = rtnl_neigh_alloc();
8189         if (rn == NULL)
8190                 return -ENOMEM;
8191
8192         /* set the destination ip address for neigh */
8193         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8194         if (nl_ipaddr == NULL) {
8195                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8196                 res = -ENOMEM;
8197                 goto errout;
8198         }
8199         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8200         if (res) {
8201                 wpa_printf(MSG_DEBUG,
8202                            "nl80211: neigh set destination addr failed");
8203                 goto errout;
8204         }
8205
8206         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8207
8208         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8209         if (res) {
8210                 wpa_printf(MSG_DEBUG,
8211                            "nl80211: Deleting bridge ip neigh failed: %s",
8212                            strerror(errno));
8213         }
8214 errout:
8215         if (nl_ipaddr)
8216                 nl_addr_put(nl_ipaddr);
8217         if (rn)
8218                 rtnl_neigh_put(rn);
8219         return res;
8220 #else /* CONFIG_LIBNL3_ROUTE */
8221         return -1;
8222 #endif /* CONFIG_LIBNL3_ROUTE */
8223 }
8224
8225
8226 static int linux_write_system_file(const char *path, unsigned int val)
8227 {
8228         char buf[50];
8229         int fd, len;
8230
8231         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8232         if (os_snprintf_error(sizeof(buf), len))
8233                 return -1;
8234
8235         fd = open(path, O_WRONLY);
8236         if (fd < 0)
8237                 return -1;
8238
8239         if (write(fd, buf, len) < 0) {
8240                 wpa_printf(MSG_DEBUG,
8241                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8242                            path, val);
8243                 close(fd);
8244                 return -1;
8245         }
8246         close(fd);
8247
8248         return 0;
8249 }
8250
8251
8252 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8253 {
8254         switch (attr) {
8255         case DRV_BR_PORT_ATTR_PROXYARP:
8256                 return "proxyarp";
8257         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8258                 return "hairpin_mode";
8259         }
8260
8261         return NULL;
8262 }
8263
8264
8265 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8266                                        unsigned int val)
8267 {
8268         struct i802_bss *bss = priv;
8269         char path[128];
8270         const char *attr_txt;
8271
8272         attr_txt = drv_br_port_attr_str(attr);
8273         if (attr_txt == NULL)
8274                 return -EINVAL;
8275
8276         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8277                     bss->ifname, attr_txt);
8278
8279         if (linux_write_system_file(path, val))
8280                 return -1;
8281
8282         return 0;
8283 }
8284
8285
8286 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8287 {
8288         switch (param) {
8289         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8290                 return "arp_accept";
8291         }
8292
8293         return NULL;
8294 }
8295
8296
8297 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8298                                        unsigned int val)
8299 {
8300         struct i802_bss *bss = priv;
8301         char path[128];
8302         const char *param_txt;
8303         int ip_version = 4;
8304
8305         param_txt = drv_br_net_param_str(param);
8306         if (param_txt == NULL)
8307                 return -EINVAL;
8308
8309         switch (param) {
8310                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8311                         ip_version = 4;
8312                         break;
8313                 default:
8314                         return -EINVAL;
8315         }
8316
8317         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8318                     ip_version, bss->brname, param_txt);
8319
8320         if (linux_write_system_file(path, val))
8321                 return -1;
8322
8323         return 0;
8324 }
8325
8326
8327 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8328 {
8329         switch (hw_mode) {
8330         case HOSTAPD_MODE_IEEE80211B:
8331                 return QCA_ACS_MODE_IEEE80211B;
8332         case HOSTAPD_MODE_IEEE80211G:
8333                 return QCA_ACS_MODE_IEEE80211G;
8334         case HOSTAPD_MODE_IEEE80211A:
8335                 return QCA_ACS_MODE_IEEE80211A;
8336         case HOSTAPD_MODE_IEEE80211AD:
8337                 return QCA_ACS_MODE_IEEE80211AD;
8338         default:
8339                 return -1;
8340         }
8341 }
8342
8343
8344 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8345 {
8346         struct i802_bss *bss = priv;
8347         struct wpa_driver_nl80211_data *drv = bss->drv;
8348         struct nl_msg *msg;
8349         struct nlattr *data;
8350         int ret;
8351         int mode;
8352
8353         mode = hw_mode_to_qca_acs(params->hw_mode);
8354         if (mode < 0)
8355                 return -1;
8356
8357         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8358             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8359             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8360                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8361             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8362             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8363             (params->ht_enabled &&
8364              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8365             (params->ht40_enabled &&
8366              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
8367                 nlmsg_free(msg);
8368                 return -ENOBUFS;
8369         }
8370         nla_nest_end(msg, data);
8371
8372         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8373         if (ret) {
8374                 wpa_printf(MSG_DEBUG,
8375                            "nl80211: Failed to invoke driver ACS function: %s",
8376                            strerror(errno));
8377         }
8378         return ret;
8379 }
8380
8381
8382 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8383         .name = "nl80211",
8384         .desc = "Linux nl80211/cfg80211",
8385         .get_bssid = wpa_driver_nl80211_get_bssid,
8386         .get_ssid = wpa_driver_nl80211_get_ssid,
8387         .set_key = driver_nl80211_set_key,
8388         .scan2 = driver_nl80211_scan2,
8389         .sched_scan = wpa_driver_nl80211_sched_scan,
8390         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8391         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8392         .deauthenticate = driver_nl80211_deauthenticate,
8393         .authenticate = driver_nl80211_authenticate,
8394         .associate = wpa_driver_nl80211_associate,
8395         .global_init = nl80211_global_init,
8396         .global_deinit = nl80211_global_deinit,
8397         .init2 = wpa_driver_nl80211_init,
8398         .deinit = driver_nl80211_deinit,
8399         .get_capa = wpa_driver_nl80211_get_capa,
8400         .set_operstate = wpa_driver_nl80211_set_operstate,
8401         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8402         .set_country = wpa_driver_nl80211_set_country,
8403         .get_country = wpa_driver_nl80211_get_country,
8404         .set_ap = wpa_driver_nl80211_set_ap,
8405         .set_acl = wpa_driver_nl80211_set_acl,
8406         .if_add = wpa_driver_nl80211_if_add,
8407         .if_remove = driver_nl80211_if_remove,
8408         .send_mlme = driver_nl80211_send_mlme,
8409         .get_hw_feature_data = nl80211_get_hw_feature_data,
8410         .sta_add = wpa_driver_nl80211_sta_add,
8411         .sta_remove = driver_nl80211_sta_remove,
8412         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8413         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8414         .hapd_init = i802_init,
8415         .hapd_deinit = i802_deinit,
8416         .set_wds_sta = i802_set_wds_sta,
8417         .get_seqnum = i802_get_seqnum,
8418         .flush = i802_flush,
8419         .get_inact_sec = i802_get_inact_sec,
8420         .sta_clear_stats = i802_sta_clear_stats,
8421         .set_rts = i802_set_rts,
8422         .set_frag = i802_set_frag,
8423         .set_tx_queue_params = i802_set_tx_queue_params,
8424         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8425         .sta_deauth = i802_sta_deauth,
8426         .sta_disassoc = i802_sta_disassoc,
8427         .read_sta_data = driver_nl80211_read_sta_data,
8428         .set_freq = i802_set_freq,
8429         .send_action = driver_nl80211_send_action,
8430         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8431         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8432         .cancel_remain_on_channel =
8433         wpa_driver_nl80211_cancel_remain_on_channel,
8434         .probe_req_report = driver_nl80211_probe_req_report,
8435         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8436         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8437         .resume = wpa_driver_nl80211_resume,
8438         .signal_monitor = nl80211_signal_monitor,
8439         .signal_poll = nl80211_signal_poll,
8440         .send_frame = nl80211_send_frame,
8441         .shared_freq = wpa_driver_nl80211_shared_freq,
8442         .set_param = nl80211_set_param,
8443         .get_radio_name = nl80211_get_radio_name,
8444         .add_pmkid = nl80211_add_pmkid,
8445         .remove_pmkid = nl80211_remove_pmkid,
8446         .flush_pmkid = nl80211_flush_pmkid,
8447         .set_rekey_info = nl80211_set_rekey_info,
8448         .poll_client = nl80211_poll_client,
8449         .set_p2p_powersave = nl80211_set_p2p_powersave,
8450         .start_dfs_cac = nl80211_start_radar_detection,
8451         .stop_ap = wpa_driver_nl80211_stop_ap,
8452 #ifdef CONFIG_TDLS
8453         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8454         .tdls_oper = nl80211_tdls_oper,
8455         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8456         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8457 #endif /* CONFIG_TDLS */
8458         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8459         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8460         .get_survey = wpa_driver_nl80211_get_survey,
8461         .status = wpa_driver_nl80211_status,
8462         .switch_channel = nl80211_switch_channel,
8463 #ifdef ANDROID_P2P
8464         .set_noa = wpa_driver_set_p2p_noa,
8465         .get_noa = wpa_driver_get_p2p_noa,
8466         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8467 #endif /* ANDROID_P2P */
8468 #ifdef ANDROID
8469         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8470 #endif /* ANDROID */
8471         .vendor_cmd = nl80211_vendor_cmd,
8472         .set_qos_map = nl80211_set_qos_map,
8473         .set_wowlan = nl80211_set_wowlan,
8474         .roaming = nl80211_roaming,
8475         .set_mac_addr = nl80211_set_mac_addr,
8476 #ifdef CONFIG_MESH
8477         .init_mesh = wpa_driver_nl80211_init_mesh,
8478         .join_mesh = wpa_driver_nl80211_join_mesh,
8479         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8480 #endif /* CONFIG_MESH */
8481         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8482         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8483         .br_port_set_attr = wpa_driver_br_port_set_attr,
8484         .br_set_net_param = wpa_driver_br_set_net_param,
8485         .add_tx_ts = nl80211_add_ts,
8486         .del_tx_ts = nl80211_del_ts,
8487         .do_acs = wpa_driver_do_acs,
8488 };