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 #endif /* ANDROID */
  91
  92
  93 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  94 {
  95         struct nl_handle *handle;
  96
  97         handle = nl80211_handle_alloc(cb);
  98         if (handle == NULL) {
  99                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 100                            "callbacks (%s)", dbg);
 101                 return NULL;
 102         }
 103
 104         if (genl_connect(handle)) {
 105                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 106                            "netlink (%s)", dbg);
 107                 nl80211_handle_destroy(handle);
 108                 return NULL;
 109         }
 110
 111         return handle;
 112 }
 113
 114
 115 static void nl_destroy_handles(struct nl_handle **handle)
 116 {
 117         if (*handle == NULL)
 118                 return;
 119         nl80211_handle_destroy(*handle);
 120         *handle = NULL;
 121 }
 122
 123
 124 #if __WORDSIZE == 64
 125 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 126 #else
 127 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 128 #endif
 129
 130 static void nl80211_register_eloop_read(struct nl_handle **handle,
 131                                         eloop_sock_handler handler,
 132                                         void *eloop_data)
 133 {
 134 #ifdef CONFIG_LIBNL20
 135         /*
 136          * libnl uses a pretty small buffer (32 kB that gets converted to 64 kB)
 137          * by default. It is possible to hit that limit in some cases where
 138          * operations are blocked, e.g., with a burst of Deauthentication frames
 139          * to hostapd and STA entry deletion. Try to increase the buffer to make
 140          * this less likely to occur.
 141          */
 142         if (nl_socket_set_buffer_size(*handle, 262144, 0) < 0) {
 143                 wpa_printf(MSG_DEBUG,
 144                            "nl80211: Could not set nl_socket RX buffer size: %s",
 145                            strerror(errno));
 146                 /* continue anyway with the default (smaller) buffer */
 147         }
 148 #endif /* CONFIG_LIBNL20 */
 149
 150         nl_socket_set_nonblocking(*handle);
 151         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 152                                  eloop_data, *handle);
 153         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 154 }
 155
 156
 157 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 158 {
 159         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 160         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 161         nl_destroy_handles(handle);
 162 }
 163
 164
 165 static void nl80211_global_deinit(void *priv);
 166 static void nl80211_check_global(struct nl80211_global *global);
 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                                   const u16 *csa_offs, size_t csa_offs_len);
 181 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 182                                                int report);
 183
 184 #define IFIDX_ANY -1
 185
 186 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 187                       int ifidx_reason);
 188 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 189                       int ifidx_reason);
 190 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
 191                       int ifidx_reason);
 192
 193 static int nl80211_set_channel(struct i802_bss *bss,
 194                                struct hostapd_freq_params *freq, int set_chan);
 195 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 196                                      int ifindex, int disabled);
 197
 198 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 199                               int reset_mode);
 200
 201 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 202 static int nl80211_set_param(void *priv, const char *param);
 203
 204
 205 /* Converts nl80211_chan_width to a common format */
 206 enum chan_width convert2width(int width)
 207 {
 208         switch (width) {
 209         case NL80211_CHAN_WIDTH_20_NOHT:
 210                 return CHAN_WIDTH_20_NOHT;
 211         case NL80211_CHAN_WIDTH_20:
 212                 return CHAN_WIDTH_20;
 213         case NL80211_CHAN_WIDTH_40:
 214                 return CHAN_WIDTH_40;
 215         case NL80211_CHAN_WIDTH_80:
 216                 return CHAN_WIDTH_80;
 217         case NL80211_CHAN_WIDTH_80P80:
 218                 return CHAN_WIDTH_80P80;
 219         case NL80211_CHAN_WIDTH_160:
 220                 return CHAN_WIDTH_160;
 221         }
 222         return CHAN_WIDTH_UNKNOWN;
 223 }
 224
 225
 226 int is_ap_interface(enum nl80211_iftype nlmode)
 227 {
 228         return nlmode == NL80211_IFTYPE_AP ||
 229                 nlmode == NL80211_IFTYPE_P2P_GO;
 230 }
 231
 232
 233 int is_sta_interface(enum nl80211_iftype nlmode)
 234 {
 235         return nlmode == NL80211_IFTYPE_STATION ||
 236                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 237 }
 238
 239
 240 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 241 {
 242         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 243                 nlmode == NL80211_IFTYPE_P2P_GO;
 244 }
 245
 246
 247 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 248                                   int ifindex)
 249 {
 250         struct i802_bss *bss;
 251
 252         for (bss = drv->first_bss; bss; bss = bss->next) {
 253                 if (bss->ifindex == ifindex)
 254                         return bss;
 255         }
 256
 257         return NULL;
 258 }
 259
 260
 261 static int is_mesh_interface(enum nl80211_iftype nlmode)
 262 {
 263         return nlmode == NL80211_IFTYPE_MESH_POINT;
 264 }
 265
 266
 267 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 268 {
 269         if (drv->associated)
 270                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 271         drv->associated = 0;
 272         os_memset(drv->bssid, 0, ETH_ALEN);
 273 }
 274
 275
 276 /* nl80211 code */
 277 static int ack_handler(struct nl_msg *msg, void *arg)
 278 {
 279         int *err = arg;
 280         *err = 0;
 281         return NL_STOP;
 282 }
 283
 284 static int finish_handler(struct nl_msg *msg, void *arg)
 285 {
 286         int *ret = arg;
 287         *ret = 0;
 288         return NL_SKIP;
 289 }
 290
 291 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 292                          void *arg)
 293 {
 294         int *ret = arg;
 295         *ret = err->error;
 296         return NL_SKIP;
 297 }
 298
 299
 300 static int no_seq_check(struct nl_msg *msg, void *arg)
 301 {
 302         return NL_OK;
 303 }
 304
 305
 306 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 307 {
 308         /*
 309          * Clear nlmsg data, e.g., to make sure key material is not left in
 310          * heap memory for unnecessarily long time.
 311          */
 312         if (msg) {
 313                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 314                 void *data = nlmsg_data(hdr);
 315                 /*
 316                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 317                  * only libnl were to maintain a stable API.. Neither will work
 318                  * with all released versions, so just calculate the length
 319                  * here.
 320                  */
 321                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 322
 323                 os_memset(data, 0, len);
 324         }
 325 }
 326
 327
 328 static int send_and_recv(struct nl80211_global *global,
 329                          struct nl_handle *nl_handle, struct nl_msg *msg,
 330                          int (*valid_handler)(struct nl_msg *, void *),
 331                          void *valid_data)
 332 {
 333         struct nl_cb *cb;
 334         int err = -ENOMEM;
 335
 336         if (!msg)
 337                 return -ENOMEM;
 338
 339         cb = nl_cb_clone(global->nl_cb);
 340         if (!cb)
 341                 goto out;
 342
 343         err = nl_send_auto_complete(nl_handle, msg);
 344         if (err < 0)
 345                 goto out;
 346
 347         err = 1;
 348
 349         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 350         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 351         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 352
 353         if (valid_handler)
 354                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 355                           valid_handler, valid_data);
 356
 357         while (err > 0) {
 358                 int res = nl_recvmsgs(nl_handle, cb);
 359                 if (res < 0) {
 360                         wpa_printf(MSG_INFO,
 361                                    "nl80211: %s->nl_recvmsgs failed: %d",
 362                                    __func__, res);
 363                 }
 364         }
 365  out:
 366         nl_cb_put(cb);
 367         if (!valid_handler && valid_data == (void *) -1)
 368                 nl80211_nlmsg_clear(msg);
 369         nlmsg_free(msg);
 370         return err;
 371 }
 372
 373
 374 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 375                        struct nl_msg *msg,
 376                        int (*valid_handler)(struct nl_msg *, void *),
 377                        void *valid_data)
 378 {
 379         return send_and_recv(drv->global, drv->global->nl, msg,
 380                              valid_handler, valid_data);
 381 }
 382
 383
 384 struct family_data {
 385         const char *group;
 386         int id;
 387 };
 388
 389
 390 static int family_handler(struct nl_msg *msg, void *arg)
 391 {
 392         struct family_data *res = arg;
 393         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 394         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 395         struct nlattr *mcgrp;
 396         int i;
 397
 398         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 399                   genlmsg_attrlen(gnlh, 0), NULL);
 400         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 401                 return NL_SKIP;
 402
 403         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 404                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 405                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 406                           nla_len(mcgrp), NULL);
 407                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 408                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 409                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 410                                res->group,
 411                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 412                         continue;
 413                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 414                 break;
 415         };
 416
 417         return NL_SKIP;
 418 }
 419
 420
 421 static int nl_get_multicast_id(struct nl80211_global *global,
 422                                const char *family, const char *group)
 423 {
 424         struct nl_msg *msg;
 425         int ret;
 426         struct family_data res = { group, -ENOENT };
 427
 428         msg = nlmsg_alloc();
 429         if (!msg)
 430                 return -ENOMEM;
 431         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 432                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 433             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 434                 nlmsg_free(msg);
 435                 return -1;
 436         }
 437
 438         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 439         if (ret == 0)
 440                 ret = res.id;
 441         return ret;
 442 }
 443
 444
 445 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 446                    struct nl_msg *msg, int flags, uint8_t cmd)
 447 {
 448         if (TEST_FAIL())
 449                 return NULL;
 450         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 451                            0, flags, cmd, 0);
 452 }
 453
 454
 455 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 456 {
 457         if (bss->wdev_id_set)
 458                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 459         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 460 }
 461
 462
 463 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 464 {
 465         struct nl_msg *msg;
 466
 467         msg = nlmsg_alloc();
 468         if (!msg)
 469                 return NULL;
 470
 471         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 472             nl80211_set_iface_id(msg, bss) < 0) {
 473                 nlmsg_free(msg);
 474                 return NULL;
 475         }
 476
 477         return msg;
 478 }
 479
 480
 481 static struct nl_msg *
 482 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 483                     int flags, uint8_t cmd)
 484 {
 485         struct nl_msg *msg;
 486
 487         msg = nlmsg_alloc();
 488         if (!msg)
 489                 return NULL;
 490
 491         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 492             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 493                 nlmsg_free(msg);
 494                 return NULL;
 495         }
 496
 497         return msg;
 498 }
 499
 500
 501 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 502                                 uint8_t cmd)
 503 {
 504         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 505 }
 506
 507
 508 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 509 {
 510         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 511 }
 512
 513
 514 struct wiphy_idx_data {
 515         int wiphy_idx;
 516         enum nl80211_iftype nlmode;
 517         u8 *macaddr;
 518 };
 519
 520
 521 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 522 {
 523         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 524         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 525         struct wiphy_idx_data *info = arg;
 526
 527         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 528                   genlmsg_attrlen(gnlh, 0), NULL);
 529
 530         if (tb[NL80211_ATTR_WIPHY])
 531                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 532
 533         if (tb[NL80211_ATTR_IFTYPE])
 534                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 535
 536         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 537                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 538                           ETH_ALEN);
 539
 540         return NL_SKIP;
 541 }
 542
 543
 544 int nl80211_get_wiphy_index(struct i802_bss *bss)
 545 {
 546         struct nl_msg *msg;
 547         struct wiphy_idx_data data = {
 548                 .wiphy_idx = -1,
 549                 .macaddr = NULL,
 550         };
 551
 552         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 553                 return -1;
 554
 555         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 556                 return data.wiphy_idx;
 557         return -1;
 558 }
 559
 560
 561 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 562 {
 563         struct nl_msg *msg;
 564         struct wiphy_idx_data data = {
 565                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 566                 .macaddr = NULL,
 567         };
 568
 569         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 570                 return NL80211_IFTYPE_UNSPECIFIED;
 571
 572         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 573                 return data.nlmode;
 574         return NL80211_IFTYPE_UNSPECIFIED;
 575 }
 576
 577
 578 static int nl80211_get_macaddr(struct i802_bss *bss)
 579 {
 580         struct nl_msg *msg;
 581         struct wiphy_idx_data data = {
 582                 .macaddr = bss->addr,
 583         };
 584
 585         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 586                 return -1;
 587
 588         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 589 }
 590
 591
 592 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 593                                     struct nl80211_wiphy_data *w)
 594 {
 595         struct nl_msg *msg;
 596         int ret;
 597
 598         msg = nlmsg_alloc();
 599         if (!msg)
 600                 return -1;
 601
 602         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 603             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 604                 nlmsg_free(msg);
 605                 return -1;
 606         }
 607
 608         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 609         if (ret) {
 610                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 611                            "failed: ret=%d (%s)",
 612                            ret, strerror(-ret));
 613         }
 614         return ret;
 615 }
 616
 617
 618 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 619 {
 620         struct nl80211_wiphy_data *w = eloop_ctx;
 621         int res;
 622
 623         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 624
 625         res = nl_recvmsgs(handle, w->nl_cb);
 626         if (res < 0) {
 627                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 628                            __func__, res);
 629         }
 630 }
 631
 632
 633 static int process_beacon_event(struct nl_msg *msg, void *arg)
 634 {
 635         struct nl80211_wiphy_data *w = arg;
 636         struct wpa_driver_nl80211_data *drv;
 637         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 638         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 639         union wpa_event_data event;
 640
 641         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 642                   genlmsg_attrlen(gnlh, 0), NULL);
 643
 644         if (gnlh->cmd != NL80211_CMD_FRAME) {
 645                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 646                            gnlh->cmd);
 647                 return NL_SKIP;
 648         }
 649
 650         if (!tb[NL80211_ATTR_FRAME])
 651                 return NL_SKIP;
 652
 653         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 654                          wiphy_list) {
 655                 os_memset(&event, 0, sizeof(event));
 656                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 657                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 658                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 659         }
 660
 661         return NL_SKIP;
 662 }
 663
 664
 665 static struct nl80211_wiphy_data *
 666 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 667 {
 668         static DEFINE_DL_LIST(nl80211_wiphys);
 669         struct nl80211_wiphy_data *w;
 670         int wiphy_idx, found = 0;
 671         struct i802_bss *tmp_bss;
 672
 673         if (bss->wiphy_data != NULL)
 674                 return bss->wiphy_data;
 675
 676         wiphy_idx = nl80211_get_wiphy_index(bss);
 677
 678         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 679                 if (w->wiphy_idx == wiphy_idx)
 680                         goto add;
 681         }
 682
 683         /* alloc new one */
 684         w = os_zalloc(sizeof(*w));
 685         if (w == NULL)
 686                 return NULL;
 687         w->wiphy_idx = wiphy_idx;
 688         dl_list_init(&w->bsss);
 689         dl_list_init(&w->drvs);
 690
 691         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 692         if (!w->nl_cb) {
 693                 os_free(w);
 694                 return NULL;
 695         }
 696         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 697         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 698                   w);
 699
 700         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 701                                          "wiphy beacons");
 702         if (w->nl_beacons == NULL) {
 703                 os_free(w);
 704                 return NULL;
 705         }
 706
 707         if (nl80211_register_beacons(bss->drv, w)) {
 708                 nl_destroy_handles(&w->nl_beacons);
 709                 os_free(w);
 710                 return NULL;
 711         }
 712
 713         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 714
 715         dl_list_add(&nl80211_wiphys, &w->list);
 716
 717 add:
 718         /* drv entry for this bss already there? */
 719         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 720                 if (tmp_bss->drv == bss->drv) {
 721                         found = 1;
 722                         break;
 723                 }
 724         }
 725         /* if not add it */
 726         if (!found)
 727                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 728
 729         dl_list_add(&w->bsss, &bss->wiphy_list);
 730         bss->wiphy_data = w;
 731         return w;
 732 }
 733
 734
 735 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 736 {
 737         struct nl80211_wiphy_data *w = bss->wiphy_data;
 738         struct i802_bss *tmp_bss;
 739         int found = 0;
 740
 741         if (w == NULL)
 742                 return;
 743         bss->wiphy_data = NULL;
 744         dl_list_del(&bss->wiphy_list);
 745
 746         /* still any for this drv present? */
 747         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 748                 if (tmp_bss->drv == bss->drv) {
 749                         found = 1;
 750                         break;
 751                 }
 752         }
 753         /* if not remove it */
 754         if (!found)
 755                 dl_list_del(&bss->drv->wiphy_list);
 756
 757         if (!dl_list_empty(&w->bsss))
 758                 return;
 759
 760         nl80211_destroy_eloop_handle(&w->nl_beacons);
 761
 762         nl_cb_put(w->nl_cb);
 763         dl_list_del(&w->list);
 764         os_free(w);
 765 }
 766
 767
 768 static unsigned int nl80211_get_ifindex(void *priv)
 769 {
 770         struct i802_bss *bss = priv;
 771         struct wpa_driver_nl80211_data *drv = bss->drv;
 772
 773         return drv->ifindex;
 774 }
 775
 776
 777 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 778 {
 779         struct i802_bss *bss = priv;
 780         struct wpa_driver_nl80211_data *drv = bss->drv;
 781         if (!drv->associated)
 782                 return -1;
 783         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 784         return 0;
 785 }
 786
 787
 788 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 789 {
 790         struct i802_bss *bss = priv;
 791         struct wpa_driver_nl80211_data *drv = bss->drv;
 792         if (!drv->associated)
 793                 return -1;
 794         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 795         return drv->ssid_len;
 796 }
 797
 798
 799 static void wpa_driver_nl80211_event_newlink(
 800         struct nl80211_global *global, struct wpa_driver_nl80211_data *drv,
 801         int ifindex, const char *ifname)
 802 {
 803         union wpa_event_data event;
 804
 805         if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 806                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 807                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 808                                    drv->first_bss->ifname);
 809                         return;
 810                 }
 811                 if (!drv->if_removed)
 812                         return;
 813                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 814                            drv->first_bss->ifname);
 815                 drv->if_removed = 0;
 816         }
 817
 818         os_memset(&event, 0, sizeof(event));
 819         event.interface_status.ifindex = ifindex;
 820         os_strlcpy(event.interface_status.ifname, ifname,
 821                    sizeof(event.interface_status.ifname));
 822         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 823         if (drv)
 824                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 825         else
 826                 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS,
 827                                             &event);
 828 }
 829
 830
 831 static void wpa_driver_nl80211_event_dellink(
 832         struct nl80211_global *global, struct wpa_driver_nl80211_data *drv,
 833         int ifindex, const char *ifname)
 834 {
 835         union wpa_event_data event;
 836
 837         if (drv && os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 838                 if (drv->if_removed) {
 839                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 840                                    ifname);
 841                         return;
 842                 }
 843                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 844                            ifname);
 845                 drv->if_removed = 1;
 846         } else {
 847                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 848                            ifname);
 849         }
 850
 851         os_memset(&event, 0, sizeof(event));
 852         event.interface_status.ifindex = ifindex;
 853         os_strlcpy(event.interface_status.ifname, ifname,
 854                    sizeof(event.interface_status.ifname));
 855         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 856         if (drv)
 857                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 858         else
 859                 wpa_supplicant_event_global(global->ctx, EVENT_INTERFACE_STATUS,
 860                                             &event);
 861 }
 862
 863
 864 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 865                                          u8 *buf, size_t len)
 866 {
 867         int attrlen, rta_len;
 868         struct rtattr *attr;
 869
 870         attrlen = len;
 871         attr = (struct rtattr *) buf;
 872
 873         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 874         while (RTA_OK(attr, attrlen)) {
 875                 if (attr->rta_type == IFLA_IFNAME) {
 876                         if (os_strcmp(((char *) attr) + rta_len,
 877                                       drv->first_bss->ifname) == 0)
 878                                 return 1;
 879                         else
 880                                 break;
 881                 }
 882                 attr = RTA_NEXT(attr, attrlen);
 883         }
 884
 885         return 0;
 886 }
 887
 888
 889 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 890                                           int ifindex, u8 *buf, size_t len)
 891 {
 892         if (drv->ifindex == ifindex)
 893                 return 1;
 894
 895         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 896                 nl80211_check_global(drv->global);
 897                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 898                            "interface");
 899                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 900                 return 1;
 901         }
 902
 903         return 0;
 904 }
 905
 906
 907 static struct wpa_driver_nl80211_data *
 908 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 909 {
 910         struct wpa_driver_nl80211_data *drv;
 911         dl_list_for_each(drv, &global->interfaces,
 912                          struct wpa_driver_nl80211_data, list) {
 913                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 914                     have_ifidx(drv, idx, IFIDX_ANY))
 915                         return drv;
 916         }
 917         return NULL;
 918 }
 919
 920
 921 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 922                                                  struct ifinfomsg *ifi,
 923                                                  u8 *buf, size_t len)
 924 {
 925         struct nl80211_global *global = ctx;
 926         struct wpa_driver_nl80211_data *drv;
 927         int attrlen;
 928         struct rtattr *attr;
 929         u32 brid = 0;
 930         char namebuf[IFNAMSIZ];
 931         char ifname[IFNAMSIZ + 1];
 932         char extra[100], *pos, *end;
 933
 934         extra[0] = '\0';
 935         pos = extra;
 936         end = pos + sizeof(extra);
 937         ifname[0] = '\0';
 938
 939         attrlen = len;
 940         attr = (struct rtattr *) buf;
 941         while (RTA_OK(attr, attrlen)) {
 942                 switch (attr->rta_type) {
 943                 case IFLA_IFNAME:
 944                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 945                                 break;
 946                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 947                         ifname[RTA_PAYLOAD(attr)] = '\0';
 948                         break;
 949                 case IFLA_MASTER:
 950                         brid = nla_get_u32((struct nlattr *) attr);
 951                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 952                         break;
 953                 case IFLA_WIRELESS:
 954                         pos += os_snprintf(pos, end - pos, " wext");
 955                         break;
 956                 case IFLA_OPERSTATE:
 957                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 958                                            nla_get_u32((struct nlattr *) attr));
 959                         break;
 960                 case IFLA_LINKMODE:
 961                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 962                                            nla_get_u32((struct nlattr *) attr));
 963                         break;
 964                 }
 965                 attr = RTA_NEXT(attr, attrlen);
 966         }
 967         extra[sizeof(extra) - 1] = '\0';
 968
 969         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 970                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 971                    ifi->ifi_flags,
 972                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 973                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 974                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 975                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 976
 977         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 978         if (!drv)
 979                 goto event_newlink;
 980
 981         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 982                 namebuf[0] = '\0';
 983                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 984                     linux_iface_up(drv->global->ioctl_sock, namebuf) > 0) {
 985                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 986                                    "event since interface %s is up", namebuf);
 987                         drv->ignore_if_down_event = 0;
 988                         return;
 989                 }
 990                 wpa_printf(MSG_DEBUG, "nl80211: Interface down (%s/%s)",
 991                            namebuf, ifname);
 992                 if (os_strcmp(drv->first_bss->ifname, ifname) != 0) {
 993                         wpa_printf(MSG_DEBUG,
 994                                    "nl80211: Not the main interface (%s) - do not indicate interface down",
 995                                    drv->first_bss->ifname);
 996                 } else if (drv->ignore_if_down_event) {
 997                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 998                                    "event generated by mode change");
 999                         drv->ignore_if_down_event = 0;
1000                 } else {
1001                         drv->if_disabled = 1;
1002                         wpa_supplicant_event(drv->ctx,
1003                                              EVENT_INTERFACE_DISABLED, NULL);
1004
1005                         /*
1006                          * Try to get drv again, since it may be removed as
1007                          * part of the EVENT_INTERFACE_DISABLED handling for
1008                          * dynamic interfaces
1009                          */
1010                         drv = nl80211_find_drv(global, ifi->ifi_index,
1011                                                buf, len);
1012                         if (!drv)
1013                                 return;
1014                 }
1015         }
1016
1017         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
1018                 if (if_indextoname(ifi->ifi_index, namebuf) &&
1019                     linux_iface_up(drv->global->ioctl_sock, namebuf) == 0) {
1020                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1021                                    "event since interface %s is down",
1022                                    namebuf);
1023                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
1024                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1025                                    "event since interface %s does not exist",
1026                                    drv->first_bss->ifname);
1027                 } else if (drv->if_removed) {
1028                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
1029                                    "event since interface %s is marked "
1030                                    "removed", drv->first_bss->ifname);
1031                 } else {
1032                         struct i802_bss *bss;
1033                         u8 addr[ETH_ALEN];
1034
1035                         /* Re-read MAC address as it may have changed */
1036                         bss = get_bss_ifindex(drv, ifi->ifi_index);
1037                         if (bss &&
1038                             linux_get_ifhwaddr(drv->global->ioctl_sock,
1039                                                bss->ifname, addr) < 0) {
1040                                 wpa_printf(MSG_DEBUG,
1041                                            "nl80211: %s: failed to re-read MAC address",
1042                                            bss->ifname);
1043                         } else if (bss &&
1044                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
1045                                 wpa_printf(MSG_DEBUG,
1046                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1047                                            MACSTR " to " MACSTR,
1048                                            ifi->ifi_index, bss->ifname,
1049                                            MAC2STR(bss->addr),
1050                                            MAC2STR(addr));
1051                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1052                         }
1053
1054                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1055                         drv->if_disabled = 0;
1056                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1057                                              NULL);
1058                 }
1059         }
1060
1061         /*
1062          * Some drivers send the association event before the operup event--in
1063          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1064          * fails. This will hit us when wpa_supplicant does not need to do
1065          * IEEE 802.1X authentication
1066          */
1067         if (drv->operstate == 1 &&
1068             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1069             !(ifi->ifi_flags & IFF_RUNNING)) {
1070                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1071                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1072                                        -1, IF_OPER_UP);
1073         }
1074
1075 event_newlink:
1076         if (ifname[0])
1077                 wpa_driver_nl80211_event_newlink(global, drv, ifi->ifi_index,
1078                                                  ifname);
1079
1080         if (ifi->ifi_family == AF_BRIDGE && brid && drv) {
1081                 struct i802_bss *bss;
1082
1083                 /* device has been added to bridge */
1084                 if (!if_indextoname(brid, namebuf)) {
1085                         wpa_printf(MSG_DEBUG,
1086                                    "nl80211: Could not find bridge ifname for ifindex %u",
1087                                    brid);
1088                         return;
1089                 }
1090                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1091                            brid, namebuf);
1092                 add_ifidx(drv, brid, ifi->ifi_index);
1093
1094                 for (bss = drv->first_bss; bss; bss = bss->next) {
1095                         if (os_strcmp(ifname, bss->ifname) == 0) {
1096                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1097                                 break;
1098                         }
1099                 }
1100         }
1101 }
1102
1103
1104 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1105                                                  struct ifinfomsg *ifi,
1106                                                  u8 *buf, size_t len)
1107 {
1108         struct nl80211_global *global = ctx;
1109         struct wpa_driver_nl80211_data *drv;
1110         int attrlen;
1111         struct rtattr *attr;
1112         u32 brid = 0;
1113         char ifname[IFNAMSIZ + 1];
1114         char extra[100], *pos, *end;
1115
1116         extra[0] = '\0';
1117         pos = extra;
1118         end = pos + sizeof(extra);
1119         ifname[0] = '\0';
1120
1121         attrlen = len;
1122         attr = (struct rtattr *) buf;
1123         while (RTA_OK(attr, attrlen)) {
1124                 switch (attr->rta_type) {
1125                 case IFLA_IFNAME:
1126                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1127                                 break;
1128                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1129                         ifname[RTA_PAYLOAD(attr)] = '\0';
1130                         break;
1131                 case IFLA_MASTER:
1132                         brid = nla_get_u32((struct nlattr *) attr);
1133                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1134                         break;
1135                 case IFLA_OPERSTATE:
1136                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1137                                            nla_get_u32((struct nlattr *) attr));
1138                         break;
1139                 case IFLA_LINKMODE:
1140                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1141                                            nla_get_u32((struct nlattr *) attr));
1142                         break;
1143                 }
1144                 attr = RTA_NEXT(attr, attrlen);
1145         }
1146         extra[sizeof(extra) - 1] = '\0';
1147
1148         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1149                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1150                    ifi->ifi_flags,
1151                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1152                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1153                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1154                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1155
1156         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1157
1158         if (ifi->ifi_family == AF_BRIDGE && brid && drv) {
1159                 /* device has been removed from bridge */
1160                 char namebuf[IFNAMSIZ];
1161
1162                 if (!if_indextoname(brid, namebuf)) {
1163                         wpa_printf(MSG_DEBUG,
1164                                    "nl80211: Could not find bridge ifname for ifindex %u",
1165                                    brid);
1166                 } else {
1167                         wpa_printf(MSG_DEBUG,
1168                                    "nl80211: Remove ifindex %u for bridge %s",
1169                                    brid, namebuf);
1170                 }
1171                 del_ifidx(drv, brid, ifi->ifi_index);
1172         }
1173
1174         if (ifi->ifi_family != AF_BRIDGE || !brid)
1175                 wpa_driver_nl80211_event_dellink(global, drv, ifi->ifi_index,
1176                                                  ifname);
1177 }
1178
1179
1180 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1181 {
1182         struct nl_msg *msg;
1183         int ret;
1184         struct nl80211_bss_info_arg arg;
1185
1186         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1187         os_memset(&arg, 0, sizeof(arg));
1188         arg.drv = drv;
1189         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1190         if (ret == 0) {
1191                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1192                         arg.ibss_freq : arg.assoc_freq;
1193                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1194                            "associated BSS from scan results: %u MHz", freq);
1195                 if (freq)
1196                         drv->assoc_freq = freq;
1197                 return drv->assoc_freq;
1198         }
1199         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1200                    "(%s)", ret, strerror(-ret));
1201         return drv->assoc_freq;
1202 }
1203
1204
1205 static int get_link_signal(struct nl_msg *msg, void *arg)
1206 {
1207         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1208         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1209         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1210         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1211                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1212                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1213                 [NL80211_STA_INFO_BEACON_SIGNAL_AVG] = { .type = NLA_U8 },
1214         };
1215         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1216         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1217                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1218                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1219                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1220                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1221         };
1222         struct wpa_signal_info *sig_change = arg;
1223
1224         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1225                   genlmsg_attrlen(gnlh, 0), NULL);
1226         if (!tb[NL80211_ATTR_STA_INFO] ||
1227             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1228                              tb[NL80211_ATTR_STA_INFO], policy))
1229                 return NL_SKIP;
1230         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1231                 return NL_SKIP;
1232
1233         sig_change->current_signal =
1234                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1235
1236         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1237                 sig_change->avg_signal =
1238                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1239         else
1240                 sig_change->avg_signal = 0;
1241
1242         if (sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG])
1243                 sig_change->avg_beacon_signal =
1244                         (s8)
1245                         nla_get_u8(sinfo[NL80211_STA_INFO_BEACON_SIGNAL_AVG]);
1246         else
1247                 sig_change->avg_beacon_signal = 0;
1248
1249         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1250                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1251                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1252                                      rate_policy)) {
1253                         sig_change->current_txrate = 0;
1254                 } else {
1255                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1256                                 sig_change->current_txrate =
1257                                         nla_get_u16(rinfo[
1258                                              NL80211_RATE_INFO_BITRATE]) * 100;
1259                         }
1260                 }
1261         }
1262
1263         return NL_SKIP;
1264 }
1265
1266
1267 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1268                             struct wpa_signal_info *sig)
1269 {
1270         struct nl_msg *msg;
1271
1272         sig->current_signal = -9999;
1273         sig->current_txrate = 0;
1274
1275         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1277                 nlmsg_free(msg);
1278                 return -ENOBUFS;
1279         }
1280
1281         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1282 }
1283
1284
1285 static int get_link_noise(struct nl_msg *msg, void *arg)
1286 {
1287         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1288         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1289         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1290         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1291                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1292                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1293         };
1294         struct wpa_signal_info *sig_change = arg;
1295
1296         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1297                   genlmsg_attrlen(gnlh, 0), NULL);
1298
1299         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1300                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1301                 return NL_SKIP;
1302         }
1303
1304         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1305                              tb[NL80211_ATTR_SURVEY_INFO],
1306                              survey_policy)) {
1307                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1308                            "attributes!");
1309                 return NL_SKIP;
1310         }
1311
1312         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1313                 return NL_SKIP;
1314
1315         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1316             sig_change->frequency)
1317                 return NL_SKIP;
1318
1319         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1320                 return NL_SKIP;
1321
1322         sig_change->current_noise =
1323                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1324
1325         return NL_SKIP;
1326 }
1327
1328
1329 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1330                            struct wpa_signal_info *sig_change)
1331 {
1332         struct nl_msg *msg;
1333
1334         sig_change->current_noise = 9999;
1335         sig_change->frequency = drv->assoc_freq;
1336
1337         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1338         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1339 }
1340
1341
1342 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1343                                              void *handle)
1344 {
1345         struct nl_cb *cb = eloop_ctx;
1346         int res;
1347
1348         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1349
1350         res = nl_recvmsgs(handle, cb);
1351         if (res < 0) {
1352                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1353                            __func__, res);
1354         }
1355 }
1356
1357
1358 /**
1359  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1360  * @priv: driver_nl80211 private data
1361  * @alpha2_arg: country to which to switch to
1362  * Returns: 0 on success, -1 on failure
1363  *
1364  * This asks nl80211 to set the regulatory domain for given
1365  * country ISO / IEC alpha2.
1366  */
1367 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1368 {
1369         struct i802_bss *bss = priv;
1370         struct wpa_driver_nl80211_data *drv = bss->drv;
1371         char alpha2[3];
1372         struct nl_msg *msg;
1373
1374         msg = nlmsg_alloc();
1375         if (!msg)
1376                 return -ENOMEM;
1377
1378         alpha2[0] = alpha2_arg[0];
1379         alpha2[1] = alpha2_arg[1];
1380         alpha2[2] = '\0';
1381
1382         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1383             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1384                 nlmsg_free(msg);
1385                 return -EINVAL;
1386         }
1387         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1388                 return -EINVAL;
1389         return 0;
1390 }
1391
1392
1393 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1394 {
1395         char *alpha2 = arg;
1396         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1397         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1398
1399         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1400                   genlmsg_attrlen(gnlh, 0), NULL);
1401         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1402                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1403                 return NL_SKIP;
1404         }
1405         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1406         return NL_SKIP;
1407 }
1408
1409
1410 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1411 {
1412         struct i802_bss *bss = priv;
1413         struct wpa_driver_nl80211_data *drv = bss->drv;
1414         struct nl_msg *msg;
1415         int ret;
1416
1417         msg = nlmsg_alloc();
1418         if (!msg)
1419                 return -ENOMEM;
1420
1421         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1422         alpha2[0] = '\0';
1423         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1424         if (!alpha2[0])
1425                 ret = -1;
1426
1427         return ret;
1428 }
1429
1430
1431 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1432 {
1433         int ret;
1434
1435         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1436         if (global->nl_cb == NULL) {
1437                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1438                            "callbacks");
1439                 return -1;
1440         }
1441
1442         global->nl = nl_create_handle(global->nl_cb, "nl");
1443         if (global->nl == NULL)
1444                 goto err;
1445
1446         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1447         if (global->nl80211_id < 0) {
1448                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1449                            "found");
1450                 goto err;
1451         }
1452
1453         global->nl_event = nl_create_handle(global->nl_cb, "event");
1454         if (global->nl_event == NULL)
1455                 goto err;
1456
1457         ret = nl_get_multicast_id(global, "nl80211", "scan");
1458         if (ret >= 0)
1459                 ret = nl_socket_add_membership(global->nl_event, ret);
1460         if (ret < 0) {
1461                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1462                            "membership for scan events: %d (%s)",
1463                            ret, strerror(-ret));
1464                 goto err;
1465         }
1466
1467         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1468         if (ret >= 0)
1469                 ret = nl_socket_add_membership(global->nl_event, ret);
1470         if (ret < 0) {
1471                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1472                            "membership for mlme events: %d (%s)",
1473                            ret, strerror(-ret));
1474                 goto err;
1475         }
1476
1477         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1478         if (ret >= 0)
1479                 ret = nl_socket_add_membership(global->nl_event, ret);
1480         if (ret < 0) {
1481                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1482                            "membership for regulatory events: %d (%s)",
1483                            ret, strerror(-ret));
1484                 /* Continue without regulatory events */
1485         }
1486
1487         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1488         if (ret >= 0)
1489                 ret = nl_socket_add_membership(global->nl_event, ret);
1490         if (ret < 0) {
1491                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1492                            "membership for vendor events: %d (%s)",
1493                            ret, strerror(-ret));
1494                 /* Continue without vendor events */
1495         }
1496
1497         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1498                   no_seq_check, NULL);
1499         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1500                   process_global_event, global);
1501
1502         nl80211_register_eloop_read(&global->nl_event,
1503                                     wpa_driver_nl80211_event_receive,
1504                                     global->nl_cb);
1505
1506         return 0;
1507
1508 err:
1509         nl_destroy_handles(&global->nl_event);
1510         nl_destroy_handles(&global->nl);
1511         nl_cb_put(global->nl_cb);
1512         global->nl_cb = NULL;
1513         return -1;
1514 }
1515
1516
1517 static void nl80211_check_global(struct nl80211_global *global)
1518 {
1519         struct nl_handle *handle;
1520         const char *groups[] = { "scan", "mlme", "regulatory", "vendor", NULL };
1521         int ret;
1522         unsigned int i;
1523
1524         /*
1525          * Try to re-add memberships to handle case of cfg80211 getting reloaded
1526          * and all registration having been cleared.
1527          */
1528         handle = (void *) (((intptr_t) global->nl_event) ^
1529                            ELOOP_SOCKET_INVALID);
1530
1531         for (i = 0; groups[i]; i++) {
1532                 ret = nl_get_multicast_id(global, "nl80211", groups[i]);
1533                 if (ret >= 0)
1534                         ret = nl_socket_add_membership(handle, ret);
1535                 if (ret < 0) {
1536                         wpa_printf(MSG_INFO,
1537                                    "nl80211: Could not re-add multicast membership for %s events: %d (%s)",
1538                                    groups[i], ret, strerror(-ret));
1539                 }
1540         }
1541 }
1542
1543
1544 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1545 {
1546         struct wpa_driver_nl80211_data *drv = ctx;
1547
1548         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1549
1550         /*
1551          * rtnetlink ifdown handler will report interfaces other than the P2P
1552          * Device interface as disabled.
1553          */
1554         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1555                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
1556 }
1557
1558
1559 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1560 {
1561         struct wpa_driver_nl80211_data *drv = ctx;
1562         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1563         if (i802_set_iface_flags(drv->first_bss, 1)) {
1564                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1565                            "after rfkill unblock");
1566                 return;
1567         }
1568
1569         if (is_p2p_net_interface(drv->nlmode))
1570                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
1571
1572         /*
1573          * rtnetlink ifup handler will report interfaces other than the P2P
1574          * Device interface as enabled.
1575          */
1576         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
1577                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
1578 }
1579
1580
1581 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1582                                                       void *eloop_ctx,
1583                                                       void *handle)
1584 {
1585         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1586         u8 data[2048];
1587         struct msghdr msg;
1588         struct iovec entry;
1589         u8 control[512];
1590         struct cmsghdr *cmsg;
1591         int res, found_ee = 0, found_wifi = 0, acked = 0;
1592         union wpa_event_data event;
1593
1594         memset(&msg, 0, sizeof(msg));
1595         msg.msg_iov = &entry;
1596         msg.msg_iovlen = 1;
1597         entry.iov_base = data;
1598         entry.iov_len = sizeof(data);
1599         msg.msg_control = &control;
1600         msg.msg_controllen = sizeof(control);
1601
1602         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1603         /* if error or not fitting 802.3 header, return */
1604         if (res < 14)
1605                 return;
1606
1607         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1608         {
1609                 if (cmsg->cmsg_level == SOL_SOCKET &&
1610                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1611                         int *ack;
1612
1613                         found_wifi = 1;
1614                         ack = (void *)CMSG_DATA(cmsg);
1615                         acked = *ack;
1616                 }
1617
1618                 if (cmsg->cmsg_level == SOL_PACKET &&
1619                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1620                         struct sock_extended_err *err =
1621                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1622
1623                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1624                                 found_ee = 1;
1625                 }
1626         }
1627
1628         if (!found_ee || !found_wifi)
1629                 return;
1630
1631         memset(&event, 0, sizeof(event));
1632         event.eapol_tx_status.dst = data;
1633         event.eapol_tx_status.data = data + 14;
1634         event.eapol_tx_status.data_len = res - 14;
1635         event.eapol_tx_status.ack = acked;
1636         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1637 }
1638
1639
1640 static int nl80211_init_bss(struct i802_bss *bss)
1641 {
1642         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1643         if (!bss->nl_cb)
1644                 return -1;
1645
1646         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1647                   no_seq_check, NULL);
1648         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1649                   process_bss_event, bss);
1650
1651         return 0;
1652 }
1653
1654
1655 static void nl80211_destroy_bss(struct i802_bss *bss)
1656 {
1657         nl_cb_put(bss->nl_cb);
1658         bss->nl_cb = NULL;
1659 }
1660
1661
1662 static void
1663 wpa_driver_nl80211_drv_init_rfkill(struct wpa_driver_nl80211_data *drv)
1664 {
1665         struct rfkill_config *rcfg;
1666
1667         if (drv->rfkill)
1668                 return;
1669
1670         rcfg = os_zalloc(sizeof(*rcfg));
1671         if (!rcfg)
1672                 return;
1673
1674         rcfg->ctx = drv;
1675
1676         /* rfkill uses netdev sysfs for initialization. However, P2P Device is
1677          * not associated with a netdev, so use the name of some other interface
1678          * sharing the same wiphy as the P2P Device interface.
1679          *
1680          * Note: This is valid, as a P2P Device interface is always dynamically
1681          * created and is created only once another wpa_s interface was added.
1682          */
1683         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) {
1684                 struct nl80211_global *global = drv->global;
1685                 struct wpa_driver_nl80211_data *tmp1;
1686
1687                 dl_list_for_each(tmp1, &global->interfaces,
1688                                  struct wpa_driver_nl80211_data, list) {
1689                         if (drv == tmp1 || drv->wiphy_idx != tmp1->wiphy_idx ||
1690                             !tmp1->rfkill)
1691                                 continue;
1692
1693                         wpa_printf(MSG_DEBUG,
1694                                    "nl80211: Use (%s) to initialize P2P Device rfkill",
1695                                    tmp1->first_bss->ifname);
1696                         os_strlcpy(rcfg->ifname, tmp1->first_bss->ifname,
1697                                    sizeof(rcfg->ifname));
1698                         break;
1699                 }
1700         } else {
1701                 os_strlcpy(rcfg->ifname, drv->first_bss->ifname,
1702                            sizeof(rcfg->ifname));
1703         }
1704
1705         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1706         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1707         drv->rfkill = rfkill_init(rcfg);
1708         if (!drv->rfkill) {
1709                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1710                 os_free(rcfg);
1711         }
1712 }
1713
1714
1715 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1716                                           void *global_priv, int hostapd,
1717                                           const u8 *set_addr,
1718                                           const char *driver_params)
1719 {
1720         struct wpa_driver_nl80211_data *drv;
1721         struct i802_bss *bss;
1722
1723         if (global_priv == NULL)
1724                 return NULL;
1725         drv = os_zalloc(sizeof(*drv));
1726         if (drv == NULL)
1727                 return NULL;
1728         drv->global = global_priv;
1729         drv->ctx = ctx;
1730         drv->hostapd = !!hostapd;
1731         drv->eapol_sock = -1;
1732
1733         /*
1734          * There is no driver capability flag for this, so assume it is
1735          * supported and disable this on first attempt to use if the driver
1736          * rejects the command due to missing support.
1737          */
1738         drv->set_rekey_offload = 1;
1739
1740         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1741         drv->if_indices = drv->default_if_indices;
1742         drv->if_indices_reason = drv->default_if_indices_reason;
1743
1744         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1745         if (!drv->first_bss) {
1746                 os_free(drv);
1747                 return NULL;
1748         }
1749         bss = drv->first_bss;
1750         bss->drv = drv;
1751         bss->ctx = ctx;
1752
1753         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1754         drv->monitor_ifidx = -1;
1755         drv->monitor_sock = -1;
1756         drv->eapol_tx_sock = -1;
1757         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1758
1759         if (nl80211_init_bss(bss))
1760                 goto failed;
1761
1762         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1763                 goto failed;
1764
1765         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1766         if (drv->eapol_tx_sock < 0)
1767                 goto failed;
1768
1769         if (drv->data_tx_status) {
1770                 int enabled = 1;
1771
1772                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1773                                &enabled, sizeof(enabled)) < 0) {
1774                         wpa_printf(MSG_DEBUG,
1775                                 "nl80211: wifi status sockopt failed\n");
1776                         drv->data_tx_status = 0;
1777                         if (!drv->use_monitor)
1778                                 drv->capa.flags &=
1779                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1780                 } else {
1781                         eloop_register_read_sock(drv->eapol_tx_sock,
1782                                 wpa_driver_nl80211_handle_eapol_tx_status,
1783                                 drv, NULL);
1784                 }
1785         }
1786
1787         if (drv->global) {
1788                 nl80211_check_global(drv->global);
1789                 dl_list_add(&drv->global->interfaces, &drv->list);
1790                 drv->in_interface_list = 1;
1791         }
1792
1793         return bss;
1794
1795 failed:
1796         wpa_driver_nl80211_deinit(bss);
1797         return NULL;
1798 }
1799
1800
1801 /**
1802  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1803  * @ctx: context to be used when calling wpa_supplicant functions,
1804  * e.g., wpa_supplicant_event()
1805  * @ifname: interface name, e.g., wlan0
1806  * @global_priv: private driver global data from global_init()
1807  * Returns: Pointer to private data, %NULL on failure
1808  */
1809 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1810                                       void *global_priv)
1811 {
1812         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1813                                            NULL);
1814 }
1815
1816
1817 static int nl80211_register_frame(struct i802_bss *bss,
1818                                   struct nl_handle *nl_handle,
1819                                   u16 type, const u8 *match, size_t match_len)
1820 {
1821         struct wpa_driver_nl80211_data *drv = bss->drv;
1822         struct nl_msg *msg;
1823         int ret;
1824         char buf[30];
1825
1826         buf[0] = '\0';
1827         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1828         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1829                    type, fc2str(type), nl_handle, buf);
1830
1831         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1832             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1833             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1834                 nlmsg_free(msg);
1835                 return -1;
1836         }
1837
1838         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1839         if (ret) {
1840                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1841                            "failed (type=%u): ret=%d (%s)",
1842                            type, ret, strerror(-ret));
1843                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1844                             match, match_len);
1845         }
1846         return ret;
1847 }
1848
1849
1850 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1851 {
1852         if (bss->nl_mgmt) {
1853                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1854                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1855                 return -1;
1856         }
1857
1858         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1859         if (bss->nl_mgmt == NULL)
1860                 return -1;
1861
1862         return 0;
1863 }
1864
1865
1866 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1867 {
1868         nl80211_register_eloop_read(&bss->nl_mgmt,
1869                                     wpa_driver_nl80211_event_receive,
1870                                     bss->nl_cb);
1871 }
1872
1873
1874 static int nl80211_register_action_frame(struct i802_bss *bss,
1875                                          const u8 *match, size_t match_len)
1876 {
1877         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1878         return nl80211_register_frame(bss, bss->nl_mgmt,
1879                                       type, match, match_len);
1880 }
1881
1882
1883 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1884 {
1885         struct wpa_driver_nl80211_data *drv = bss->drv;
1886         int ret = 0;
1887
1888         if (nl80211_alloc_mgmt_handle(bss))
1889                 return -1;
1890         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1891                    "handle %p", bss->nl_mgmt);
1892
1893         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1894                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1895
1896                 /* register for any AUTH message */
1897                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1898         }
1899
1900 #ifdef CONFIG_INTERWORKING
1901         /* QoS Map Configure */
1902         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1903                 ret = -1;
1904 #endif /* CONFIG_INTERWORKING */
1905 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1906         /* GAS Initial Request */
1907         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1908                 ret = -1;
1909         /* GAS Initial Response */
1910         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1911                 ret = -1;
1912         /* GAS Comeback Request */
1913         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1914                 ret = -1;
1915         /* GAS Comeback Response */
1916         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1917                 ret = -1;
1918         /* Protected GAS Initial Request */
1919         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1920                 ret = -1;
1921         /* Protected GAS Initial Response */
1922         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1923                 ret = -1;
1924         /* Protected GAS Comeback Request */
1925         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1926                 ret = -1;
1927         /* Protected GAS Comeback Response */
1928         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1929                 ret = -1;
1930 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1931 #ifdef CONFIG_P2P
1932         /* P2P Public Action */
1933         if (nl80211_register_action_frame(bss,
1934                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1935                                           6) < 0)
1936                 ret = -1;
1937         /* P2P Action */
1938         if (nl80211_register_action_frame(bss,
1939                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1940                                           5) < 0)
1941                 ret = -1;
1942 #endif /* CONFIG_P2P */
1943 #ifdef CONFIG_IEEE80211W
1944         /* SA Query Response */
1945         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1946                 ret = -1;
1947 #endif /* CONFIG_IEEE80211W */
1948 #ifdef CONFIG_TDLS
1949         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1950                 /* TDLS Discovery Response */
1951                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1952                     0)
1953                         ret = -1;
1954         }
1955 #endif /* CONFIG_TDLS */
1956 #ifdef CONFIG_FST
1957         /* FST Action frames */
1958         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
1959                 ret = -1;
1960 #endif /* CONFIG_FST */
1961
1962         /* FT Action frames */
1963         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1964                 ret = -1;
1965         else
1966                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1967                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1968
1969         /* WNM - BSS Transition Management Request */
1970         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1971                 ret = -1;
1972         /* WNM-Sleep Mode Response */
1973         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1974                 ret = -1;
1975
1976 #ifdef CONFIG_HS20
1977         /* WNM-Notification */
1978         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1979                 ret = -1;
1980 #endif /* CONFIG_HS20 */
1981
1982         /* WMM-AC ADDTS Response */
1983         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1984                 ret = -1;
1985
1986         /* WMM-AC DELTS */
1987         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1988                 ret = -1;
1989
1990         /* Radio Measurement - Neighbor Report Response */
1991         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1992                 ret = -1;
1993
1994         /* Radio Measurement - Radio Measurement Request */
1995         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x00", 2) < 0)
1996                 ret = -1;
1997
1998         /* Radio Measurement - Link Measurement Request */
1999         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
2000             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
2001                 ret = -1;
2002
2003         nl80211_mgmt_handle_register_eloop(bss);
2004
2005         return ret;
2006 }
2007
2008
2009 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
2010 {
2011         int ret = 0;
2012
2013         if (nl80211_alloc_mgmt_handle(bss))
2014                 return -1;
2015
2016         wpa_printf(MSG_DEBUG,
2017                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
2018                    bss->nl_mgmt);
2019
2020         /* Auth frames for mesh SAE */
2021         if (nl80211_register_frame(bss, bss->nl_mgmt,
2022                                    (WLAN_FC_TYPE_MGMT << 2) |
2023                                    (WLAN_FC_STYPE_AUTH << 4),
2024                                    NULL, 0) < 0)
2025                 ret = -1;
2026
2027         /* Mesh peering open */
2028         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
2029                 ret = -1;
2030         /* Mesh peering confirm */
2031         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
2032                 ret = -1;
2033         /* Mesh peering close */
2034         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
2035                 ret = -1;
2036
2037         nl80211_mgmt_handle_register_eloop(bss);
2038
2039         return ret;
2040 }
2041
2042
2043 static int nl80211_register_spurious_class3(struct i802_bss *bss)
2044 {
2045         struct nl_msg *msg;
2046         int ret;
2047
2048         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
2049         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
2050         if (ret) {
2051                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
2052                            "failed: ret=%d (%s)",
2053                            ret, strerror(-ret));
2054         }
2055         return ret;
2056 }
2057
2058
2059 static int nl80211_action_subscribe_ap(struct i802_bss *bss)
2060 {
2061         int ret = 0;
2062
2063         /* Public Action frames */
2064         if (nl80211_register_action_frame(bss, (u8 *) "\x04", 1) < 0)
2065                 ret = -1;
2066         /* RRM Measurement Report */
2067         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x01", 2) < 0)
2068                 ret = -1;
2069         /* RRM Neighbor Report Request */
2070         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x04", 2) < 0)
2071                 ret = -1;
2072         /* FT Action frames */
2073         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
2074                 ret = -1;
2075 #ifdef CONFIG_IEEE80211W
2076         /* SA Query */
2077         if (nl80211_register_action_frame(bss, (u8 *) "\x08", 1) < 0)
2078                 ret = -1;
2079 #endif /* CONFIG_IEEE80211W */
2080         /* Protected Dual of Public Action */
2081         if (nl80211_register_action_frame(bss, (u8 *) "\x09", 1) < 0)
2082                 ret = -1;
2083         /* WNM */
2084         if (nl80211_register_action_frame(bss, (u8 *) "\x0a", 1) < 0)
2085                 ret = -1;
2086         /* WMM */
2087         if (nl80211_register_action_frame(bss, (u8 *) "\x11", 1) < 0)
2088                 ret = -1;
2089 #ifdef CONFIG_FST
2090         /* FST Action frames */
2091         if (nl80211_register_action_frame(bss, (u8 *) "\x12", 1) < 0)
2092                 ret = -1;
2093 #endif /* CONFIG_FST */
2094         /* Vendor-specific */
2095         if (nl80211_register_action_frame(bss, (u8 *) "\x7f", 1) < 0)
2096                 ret = -1;
2097
2098         return ret;
2099 }
2100
2101
2102 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
2103 {
2104         static const int stypes[] = {
2105                 WLAN_FC_STYPE_AUTH,
2106                 WLAN_FC_STYPE_ASSOC_REQ,
2107                 WLAN_FC_STYPE_REASSOC_REQ,
2108                 WLAN_FC_STYPE_DISASSOC,
2109                 WLAN_FC_STYPE_DEAUTH,
2110                 WLAN_FC_STYPE_PROBE_REQ,
2111 /* Beacon doesn't work as mac80211 doesn't currently allow
2112  * it, but it wouldn't really be the right thing anyway as
2113  * it isn't per interface ... maybe just dump the scan
2114  * results periodically for OLBC?
2115  */
2116                 /* WLAN_FC_STYPE_BEACON, */
2117         };
2118         unsigned int i;
2119
2120         if (nl80211_alloc_mgmt_handle(bss))
2121                 return -1;
2122         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2123                    "handle %p", bss->nl_mgmt);
2124
2125         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
2126                 if (nl80211_register_frame(bss, bss->nl_mgmt,
2127                                            (WLAN_FC_TYPE_MGMT << 2) |
2128                                            (stypes[i] << 4),
2129                                            NULL, 0) < 0) {
2130                         goto out_err;
2131                 }
2132         }
2133
2134         if (nl80211_action_subscribe_ap(bss))
2135                 goto out_err;
2136
2137         if (nl80211_register_spurious_class3(bss))
2138                 goto out_err;
2139
2140         if (nl80211_get_wiphy_data_ap(bss) == NULL)
2141                 goto out_err;
2142
2143         nl80211_mgmt_handle_register_eloop(bss);
2144         return 0;
2145
2146 out_err:
2147         nl_destroy_handles(&bss->nl_mgmt);
2148         return -1;
2149 }
2150
2151
2152 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
2153 {
2154         if (nl80211_alloc_mgmt_handle(bss))
2155                 return -1;
2156         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
2157                    "handle %p (device SME)", bss->nl_mgmt);
2158
2159         if (nl80211_action_subscribe_ap(bss))
2160                 goto out_err;
2161
2162         nl80211_mgmt_handle_register_eloop(bss);
2163         return 0;
2164
2165 out_err:
2166         nl_destroy_handles(&bss->nl_mgmt);
2167         return -1;
2168 }
2169
2170
2171 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
2172 {
2173         if (bss->nl_mgmt == NULL)
2174                 return;
2175         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
2176                    "(%s)", bss->nl_mgmt, reason);
2177         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
2178
2179         nl80211_put_wiphy_data_ap(bss);
2180 }
2181
2182
2183 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2184 {
2185         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2186 }
2187
2188
2189 static void nl80211_del_p2pdev(struct i802_bss *bss)
2190 {
2191         struct nl_msg *msg;
2192         int ret;
2193
2194         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2195         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2196
2197         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2198                    bss->ifname, (long long unsigned int) bss->wdev_id,
2199                    strerror(-ret));
2200 }
2201
2202
2203 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2204 {
2205         struct nl_msg *msg;
2206         int ret;
2207
2208         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2209                               NL80211_CMD_STOP_P2P_DEVICE);
2210         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2211
2212         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2213                    start ? "Start" : "Stop",
2214                    bss->ifname, (long long unsigned int) bss->wdev_id,
2215                    strerror(-ret));
2216         return ret;
2217 }
2218
2219
2220 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2221 {
2222         enum nl80211_iftype nlmode;
2223
2224         nlmode = nl80211_get_ifmode(bss);
2225         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2226                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2227                                              bss->ifname, up);
2228         }
2229
2230         /* P2P Device has start/stop which is equivalent */
2231         return nl80211_set_p2pdev(bss, up);
2232 }
2233
2234
2235 #ifdef CONFIG_TESTING_OPTIONS
2236 static int qca_vendor_test_cmd_handler(struct nl_msg *msg, void *arg)
2237 {
2238         /* struct wpa_driver_nl80211_data *drv = arg; */
2239         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2240         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2241
2242
2243         wpa_printf(MSG_DEBUG,
2244                    "nl80211: QCA vendor test command response received");
2245
2246         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2247                   genlmsg_attrlen(gnlh, 0), NULL);
2248         if (!tb[NL80211_ATTR_VENDOR_DATA]) {
2249                 wpa_printf(MSG_DEBUG, "nl80211: No vendor data attribute");
2250                 return NL_SKIP;
2251         }
2252
2253         wpa_hexdump(MSG_DEBUG,
2254                     "nl80211: Received QCA vendor test command response",
2255                     nla_data(tb[NL80211_ATTR_VENDOR_DATA]),
2256                     nla_len(tb[NL80211_ATTR_VENDOR_DATA]));
2257
2258         return NL_SKIP;
2259 }
2260 #endif /* CONFIG_TESTING_OPTIONS */
2261
2262
2263 static void qca_vendor_test(struct wpa_driver_nl80211_data *drv)
2264 {
2265 #ifdef CONFIG_TESTING_OPTIONS
2266         struct nl_msg *msg;
2267         struct nlattr *params;
2268         int ret;
2269
2270         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2271             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2272             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2273                         QCA_NL80211_VENDOR_SUBCMD_TEST) ||
2274             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
2275             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_TEST, 123)) {
2276                 nlmsg_free(msg);
2277                 return;
2278         }
2279         nla_nest_end(msg, params);
2280
2281         ret = send_and_recv_msgs(drv, msg, qca_vendor_test_cmd_handler, drv);
2282         wpa_printf(MSG_DEBUG,
2283                    "nl80211: QCA vendor test command returned %d (%s)",
2284                    ret, strerror(-ret));
2285 #endif /* CONFIG_TESTING_OPTIONS */
2286 }
2287
2288
2289 static int
2290 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2291                                    const u8 *set_addr, int first,
2292                                    const char *driver_params)
2293 {
2294         struct i802_bss *bss = drv->first_bss;
2295         int send_rfkill_event = 0;
2296         enum nl80211_iftype nlmode;
2297
2298         drv->ifindex = if_nametoindex(bss->ifname);
2299         bss->ifindex = drv->ifindex;
2300         bss->wdev_id = drv->global->if_add_wdevid;
2301         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2302
2303         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2304         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2305         drv->global->if_add_wdevid_set = 0;
2306
2307         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2308                 bss->static_ap = 1;
2309
2310         if (first &&
2311             nl80211_get_ifmode(bss) != NL80211_IFTYPE_P2P_DEVICE &&
2312             linux_iface_up(drv->global->ioctl_sock, bss->ifname) > 0)
2313                 drv->start_iface_up = 1;
2314
2315         if (wpa_driver_nl80211_capa(drv))
2316                 return -1;
2317
2318         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2319                 return -1;
2320
2321         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2322                    bss->ifname, drv->phyname);
2323
2324         if (set_addr &&
2325             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2326              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2327                                 set_addr)))
2328                 return -1;
2329
2330         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2331                 drv->start_mode_ap = 1;
2332
2333         if (drv->hostapd || bss->static_ap)
2334                 nlmode = NL80211_IFTYPE_AP;
2335         else if (bss->if_dynamic ||
2336                  nl80211_get_ifmode(bss) == NL80211_IFTYPE_MESH_POINT)
2337                 nlmode = nl80211_get_ifmode(bss);
2338         else
2339                 nlmode = NL80211_IFTYPE_STATION;
2340
2341         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2342                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2343                 return -1;
2344         }
2345
2346         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2347                 nl80211_get_macaddr(bss);
2348
2349         wpa_driver_nl80211_drv_init_rfkill(drv);
2350
2351         if (!rfkill_is_blocked(drv->rfkill)) {
2352                 int ret = i802_set_iface_flags(bss, 1);
2353                 if (ret) {
2354                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2355                                    "interface '%s' UP", bss->ifname);
2356                         return ret;
2357                 }
2358
2359                 if (is_p2p_net_interface(nlmode))
2360                         nl80211_disable_11b_rates(bss->drv,
2361                                                   bss->drv->ifindex, 1);
2362
2363                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2364                         return ret;
2365         } else {
2366                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2367                            "interface '%s' due to rfkill", bss->ifname);
2368                 if (nlmode != NL80211_IFTYPE_P2P_DEVICE)
2369                         drv->if_disabled = 1;
2370
2371                 send_rfkill_event = 1;
2372         }
2373
2374         if (!drv->hostapd && nlmode != NL80211_IFTYPE_P2P_DEVICE)
2375                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2376                                        1, IF_OPER_DORMANT);
2377
2378         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2379                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2380                                        bss->addr))
2381                         return -1;
2382                 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2383         }
2384
2385         if (send_rfkill_event) {
2386                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2387                                        drv, drv->ctx);
2388         }
2389
2390         if (drv->vendor_cmd_test_avail)
2391                 qca_vendor_test(drv);
2392
2393         return 0;
2394 }
2395
2396
2397 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2398 {
2399         struct nl_msg *msg;
2400
2401         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2402                    drv->ifindex);
2403         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2404         return send_and_recv_msgs(drv, msg, NULL, NULL);
2405 }
2406
2407
2408 /**
2409  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2410  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2411  *
2412  * Shut down driver interface and processing of driver events. Free
2413  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2414  */
2415 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2416 {
2417         struct wpa_driver_nl80211_data *drv = bss->drv;
2418         unsigned int i;
2419
2420         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2421                    bss->ifname, drv->disabled_11b_rates);
2422
2423         bss->in_deinit = 1;
2424         if (drv->data_tx_status)
2425                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2426         if (drv->eapol_tx_sock >= 0)
2427                 close(drv->eapol_tx_sock);
2428
2429         if (bss->nl_preq)
2430                 wpa_driver_nl80211_probe_req_report(bss, 0);
2431         if (bss->added_if_into_bridge) {
2432                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2433                                     bss->ifname) < 0)
2434                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2435                                    "interface %s from bridge %s: %s",
2436                                    bss->ifname, bss->brname, strerror(errno));
2437                 if (drv->rtnl_sk)
2438                         nl80211_handle_destroy(drv->rtnl_sk);
2439         }
2440         if (bss->added_bridge) {
2441                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2442                                           0) < 0)
2443                         wpa_printf(MSG_INFO,
2444                                    "nl80211: Could not set bridge %s down",
2445                                    bss->brname);
2446                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2447                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2448                                    "bridge %s: %s",
2449                                    bss->brname, strerror(errno));
2450         }
2451
2452         nl80211_remove_monitor_interface(drv);
2453
2454         if (is_ap_interface(drv->nlmode))
2455                 wpa_driver_nl80211_del_beacon(drv);
2456
2457         if (drv->eapol_sock >= 0) {
2458                 eloop_unregister_read_sock(drv->eapol_sock);
2459                 close(drv->eapol_sock);
2460         }
2461
2462         if (drv->if_indices != drv->default_if_indices)
2463                 os_free(drv->if_indices);
2464
2465         if (drv->if_indices_reason != drv->default_if_indices_reason)
2466                 os_free(drv->if_indices_reason);
2467
2468         if (drv->disabled_11b_rates)
2469                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2470
2471         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2472                                IF_OPER_UP);
2473         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2474         rfkill_deinit(drv->rfkill);
2475
2476         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2477
2478         if (!drv->start_iface_up)
2479                 (void) i802_set_iface_flags(bss, 0);
2480
2481         if (drv->addr_changed) {
2482                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2483                                           0) < 0) {
2484                         wpa_printf(MSG_DEBUG,
2485                                    "nl80211: Could not set interface down to restore permanent MAC address");
2486                 }
2487                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2488                                        drv->perm_addr) < 0) {
2489                         wpa_printf(MSG_DEBUG,
2490                                    "nl80211: Could not restore permanent MAC address");
2491                 }
2492         }
2493
2494         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2495                 if (!drv->hostapd || !drv->start_mode_ap)
2496                         wpa_driver_nl80211_set_mode(bss,
2497                                                     NL80211_IFTYPE_STATION);
2498                 nl80211_mgmt_unsubscribe(bss, "deinit");
2499         } else {
2500                 nl80211_mgmt_unsubscribe(bss, "deinit");
2501                 nl80211_del_p2pdev(bss);
2502         }
2503
2504         nl80211_destroy_bss(drv->first_bss);
2505
2506         os_free(drv->filter_ssids);
2507
2508         os_free(drv->auth_ie);
2509
2510         if (drv->in_interface_list)
2511                 dl_list_del(&drv->list);
2512
2513         os_free(drv->extended_capa);
2514         os_free(drv->extended_capa_mask);
2515         for (i = 0; i < drv->num_iface_ext_capa; i++) {
2516                 os_free(drv->iface_ext_capa[i].ext_capa);
2517                 os_free(drv->iface_ext_capa[i].ext_capa_mask);
2518         }
2519         os_free(drv->first_bss);
2520         os_free(drv);
2521 }
2522
2523
2524 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2525 {
2526         switch (alg) {
2527         case WPA_ALG_WEP:
2528                 if (key_len == 5)
2529                         return WLAN_CIPHER_SUITE_WEP40;
2530                 return WLAN_CIPHER_SUITE_WEP104;
2531         case WPA_ALG_TKIP:
2532                 return WLAN_CIPHER_SUITE_TKIP;
2533         case WPA_ALG_CCMP:
2534                 return WLAN_CIPHER_SUITE_CCMP;
2535         case WPA_ALG_GCMP:
2536                 return WLAN_CIPHER_SUITE_GCMP;
2537         case WPA_ALG_CCMP_256:
2538                 return WLAN_CIPHER_SUITE_CCMP_256;
2539         case WPA_ALG_GCMP_256:
2540                 return WLAN_CIPHER_SUITE_GCMP_256;
2541         case WPA_ALG_IGTK:
2542                 return WLAN_CIPHER_SUITE_AES_CMAC;
2543         case WPA_ALG_BIP_GMAC_128:
2544                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2545         case WPA_ALG_BIP_GMAC_256:
2546                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2547         case WPA_ALG_BIP_CMAC_256:
2548                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2549         case WPA_ALG_SMS4:
2550                 return WLAN_CIPHER_SUITE_SMS4;
2551         case WPA_ALG_KRK:
2552                 return WLAN_CIPHER_SUITE_KRK;
2553         case WPA_ALG_NONE:
2554         case WPA_ALG_PMK:
2555                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2556                            alg);
2557                 return 0;
2558         }
2559
2560         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2561                    alg);
2562         return 0;
2563 }
2564
2565
2566 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2567 {
2568         switch (cipher) {
2569         case WPA_CIPHER_CCMP_256:
2570                 return WLAN_CIPHER_SUITE_CCMP_256;
2571         case WPA_CIPHER_GCMP_256:
2572                 return WLAN_CIPHER_SUITE_GCMP_256;
2573         case WPA_CIPHER_CCMP:
2574                 return WLAN_CIPHER_SUITE_CCMP;
2575         case WPA_CIPHER_GCMP:
2576                 return WLAN_CIPHER_SUITE_GCMP;
2577         case WPA_CIPHER_TKIP:
2578                 return WLAN_CIPHER_SUITE_TKIP;
2579         case WPA_CIPHER_WEP104:
2580                 return WLAN_CIPHER_SUITE_WEP104;
2581         case WPA_CIPHER_WEP40:
2582                 return WLAN_CIPHER_SUITE_WEP40;
2583         case WPA_CIPHER_GTK_NOT_USED:
2584                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2585         }
2586
2587         return 0;
2588 }
2589
2590
2591 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2592                                        int max_suites)
2593 {
2594         int num_suites = 0;
2595
2596         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2597                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2598         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2599                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2600         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2601                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2602         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2603                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2604         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2605                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2606         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2607                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2608         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2609                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2610
2611         return num_suites;
2612 }
2613
2614
2615 #ifdef CONFIG_DRIVER_NL80211_QCA
2616 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2617                                   const u8 *key, size_t key_len)
2618 {
2619         struct nl_msg *msg;
2620         int ret;
2621
2622         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2623                 return 0;
2624
2625         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2626             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2627             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2628                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2629             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2630                 nl80211_nlmsg_clear(msg);
2631                 nlmsg_free(msg);
2632                 return -1;
2633         }
2634         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2635         if (ret) {
2636                 wpa_printf(MSG_DEBUG,
2637                            "nl80211: Key management set key failed: ret=%d (%s)",
2638                            ret, strerror(-ret));
2639         }
2640
2641         return ret;
2642 }
2643 #endif /* CONFIG_DRIVER_NL80211_QCA */
2644
2645
2646 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2647                                       enum wpa_alg alg, const u8 *addr,
2648                                       int key_idx, int set_tx,
2649                                       const u8 *seq, size_t seq_len,
2650                                       const u8 *key, size_t key_len)
2651 {
2652         struct wpa_driver_nl80211_data *drv = bss->drv;
2653         int ifindex;
2654         struct nl_msg *msg = NULL;
2655         int ret;
2656         int tdls = 0;
2657
2658         /* Ignore for P2P Device */
2659         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2660                 return 0;
2661
2662         ifindex = if_nametoindex(ifname);
2663         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2664                    "set_tx=%d seq_len=%lu key_len=%lu",
2665                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2666                    (unsigned long) seq_len, (unsigned long) key_len);
2667 #ifdef CONFIG_TDLS
2668         if (key_idx == -1) {
2669                 key_idx = 0;
2670                 tdls = 1;
2671         }
2672 #endif /* CONFIG_TDLS */
2673
2674 #ifdef CONFIG_DRIVER_NL80211_QCA
2675         if (alg == WPA_ALG_PMK &&
2676             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2677                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2678                            __func__);
2679                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2680                 return ret;
2681         }
2682 #endif /* CONFIG_DRIVER_NL80211_QCA */
2683
2684         if (alg == WPA_ALG_NONE) {
2685                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2686                 if (!msg)
2687                         return -ENOBUFS;
2688         } else {
2689                 u32 suite;
2690
2691                 suite = wpa_alg_to_cipher_suite(alg, key_len);
2692                 if (!suite)
2693                         goto fail;
2694                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2695                 if (!msg ||
2696                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2697                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER, suite))
2698                         goto fail;
2699                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2700         }
2701
2702         if (seq && seq_len) {
2703                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2704                         goto fail;
2705                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2706         }
2707
2708         if (addr && !is_broadcast_ether_addr(addr)) {
2709                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2710                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2711                         goto fail;
2712
2713                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2714                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2715                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2716                                         NL80211_KEYTYPE_GROUP))
2717                                 goto fail;
2718                 }
2719         } else if (addr && is_broadcast_ether_addr(addr)) {
2720                 struct nlattr *types;
2721
2722                 wpa_printf(MSG_DEBUG, "   broadcast key");
2723
2724                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2725                 if (!types ||
2726                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2727                         goto fail;
2728                 nla_nest_end(msg, types);
2729         }
2730         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2731                 goto fail;
2732
2733         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2734         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2735                 ret = 0;
2736         if (ret)
2737                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2738                            ret, strerror(-ret));
2739
2740         /*
2741          * If we failed or don't need to set the default TX key (below),
2742          * we're done here.
2743          */
2744         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2745                 return ret;
2746         if (is_ap_interface(drv->nlmode) && addr &&
2747             !is_broadcast_ether_addr(addr))
2748                 return ret;
2749
2750         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2751         if (!msg ||
2752             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2753             nla_put_flag(msg, (alg == WPA_ALG_IGTK ||
2754                                alg == WPA_ALG_BIP_GMAC_128 ||
2755                                alg == WPA_ALG_BIP_GMAC_256 ||
2756                                alg == WPA_ALG_BIP_CMAC_256) ?
2757                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2758                          NL80211_ATTR_KEY_DEFAULT))
2759                 goto fail;
2760         if (addr && is_broadcast_ether_addr(addr)) {
2761                 struct nlattr *types;
2762
2763                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2764                 if (!types ||
2765                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2766                         goto fail;
2767                 nla_nest_end(msg, types);
2768         } else if (addr) {
2769                 struct nlattr *types;
2770
2771                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2772                 if (!types ||
2773                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2774                         goto fail;
2775                 nla_nest_end(msg, types);
2776         }
2777
2778         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2779         if (ret == -ENOENT)
2780                 ret = 0;
2781         if (ret)
2782                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2783                            "err=%d %s)", ret, strerror(-ret));
2784         return ret;
2785
2786 fail:
2787         nl80211_nlmsg_clear(msg);
2788         nlmsg_free(msg);
2789         return -ENOBUFS;
2790 }
2791
2792
2793 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2794                       int key_idx, int defkey,
2795                       const u8 *seq, size_t seq_len,
2796                       const u8 *key, size_t key_len)
2797 {
2798         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2799         u32 suite;
2800
2801         if (!key_attr)
2802                 return -1;
2803
2804         suite = wpa_alg_to_cipher_suite(alg, key_len);
2805         if (!suite)
2806                 return -1;
2807
2808         if (defkey && alg == WPA_ALG_IGTK) {
2809                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2810                         return -1;
2811         } else if (defkey) {
2812                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2813                         return -1;
2814         }
2815
2816         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2817             nla_put_u32(msg, NL80211_KEY_CIPHER, suite) ||
2818             (seq && seq_len &&
2819              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2820             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2821                 return -1;
2822
2823         nla_nest_end(msg, key_attr);
2824
2825         return 0;
2826 }
2827
2828
2829 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2830                                  struct nl_msg *msg)
2831 {
2832         int i, privacy = 0;
2833         struct nlattr *nl_keys, *nl_key;
2834
2835         for (i = 0; i < 4; i++) {
2836                 if (!params->wep_key[i])
2837                         continue;
2838                 privacy = 1;
2839                 break;
2840         }
2841         if (params->wps == WPS_MODE_PRIVACY)
2842                 privacy = 1;
2843         if (params->pairwise_suite &&
2844             params->pairwise_suite != WPA_CIPHER_NONE)
2845                 privacy = 1;
2846
2847         if (!privacy)
2848                 return 0;
2849
2850         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2851                 return -ENOBUFS;
2852
2853         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2854         if (!nl_keys)
2855                 return -ENOBUFS;
2856
2857         for (i = 0; i < 4; i++) {
2858                 if (!params->wep_key[i])
2859                         continue;
2860
2861                 nl_key = nla_nest_start(msg, i);
2862                 if (!nl_key ||
2863                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2864                             params->wep_key[i]) ||
2865                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2866                                 params->wep_key_len[i] == 5 ?
2867                                 WLAN_CIPHER_SUITE_WEP40 :
2868                                 WLAN_CIPHER_SUITE_WEP104) ||
2869                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2870                     (i == params->wep_tx_keyidx &&
2871                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2872                         return -ENOBUFS;
2873
2874                 nla_nest_end(msg, nl_key);
2875         }
2876         nla_nest_end(msg, nl_keys);
2877
2878         return 0;
2879 }
2880
2881
2882 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2883                             const u8 *addr, int cmd, u16 reason_code,
2884                             int local_state_change)
2885 {
2886         int ret;
2887         struct nl_msg *msg;
2888
2889         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2890             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2891             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2892             (local_state_change &&
2893              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2894                 nlmsg_free(msg);
2895                 return -1;
2896         }
2897
2898         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2899         if (ret) {
2900                 wpa_dbg(drv->ctx, MSG_DEBUG,
2901                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2902                         reason_code, ret, strerror(-ret));
2903         }
2904         return ret;
2905 }
2906
2907
2908 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2909                                          int reason_code)
2910 {
2911         int ret;
2912
2913         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2914         nl80211_mark_disconnected(drv);
2915         /* Disconnect command doesn't need BSSID - it uses cached value */
2916         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2917                                       reason_code, 0);
2918         /*
2919          * For locally generated disconnect, supplicant already generates a
2920          * DEAUTH event, so ignore the event from NL80211.
2921          */
2922         drv->ignore_next_local_disconnect = ret == 0;
2923
2924         return ret;
2925 }
2926
2927
2928 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2929                                              const u8 *addr, int reason_code)
2930 {
2931         struct wpa_driver_nl80211_data *drv = bss->drv;
2932         int ret;
2933
2934         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2935                 nl80211_mark_disconnected(drv);
2936                 return nl80211_leave_ibss(drv, 1);
2937         }
2938         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2939                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2940         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2941                    __func__, MAC2STR(addr), reason_code);
2942         nl80211_mark_disconnected(drv);
2943         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2944                                       reason_code, 0);
2945         /*
2946          * For locally generated deauthenticate, supplicant already generates a
2947          * DEAUTH event, so ignore the event from NL80211.
2948          */
2949         drv->ignore_next_local_deauth = ret == 0;
2950         return ret;
2951 }
2952
2953
2954 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2955                                      struct wpa_driver_auth_params *params)
2956 {
2957         int i;
2958
2959         drv->auth_freq = params->freq;
2960         drv->auth_alg = params->auth_alg;
2961         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2962         drv->auth_local_state_change = params->local_state_change;
2963         drv->auth_p2p = params->p2p;
2964
2965         if (params->bssid)
2966                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2967         else
2968                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2969
2970         if (params->ssid) {
2971                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2972                 drv->auth_ssid_len = params->ssid_len;
2973         } else
2974                 drv->auth_ssid_len = 0;
2975
2976
2977         os_free(drv->auth_ie);
2978         drv->auth_ie = NULL;
2979         drv->auth_ie_len = 0;
2980         if (params->ie) {
2981                 drv->auth_ie = os_malloc(params->ie_len);
2982                 if (drv->auth_ie) {
2983                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2984                         drv->auth_ie_len = params->ie_len;
2985                 }
2986         }
2987
2988         for (i = 0; i < 4; i++) {
2989                 if (params->wep_key[i] && params->wep_key_len[i] &&
2990                     params->wep_key_len[i] <= 16) {
2991                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2992                                   params->wep_key_len[i]);
2993                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2994                 } else
2995                         drv->auth_wep_key_len[i] = 0;
2996         }
2997 }
2998
2999
3000 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
3001 {
3002         struct wpa_driver_nl80211_data *drv = bss->drv;
3003
3004         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
3005                 return;
3006
3007         /*
3008          * Looks like we failed to unmask 11b rates previously. This could
3009          * happen, e.g., if the interface was down at the point in time when a
3010          * P2P group was terminated.
3011          */
3012         wpa_printf(MSG_DEBUG,
3013                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
3014                    bss->ifname);
3015         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3016 }
3017
3018
3019 static int wpa_driver_nl80211_authenticate(
3020         struct i802_bss *bss, struct wpa_driver_auth_params *params)
3021 {
3022         struct wpa_driver_nl80211_data *drv = bss->drv;
3023         int ret = -1, i;
3024         struct nl_msg *msg;
3025         enum nl80211_auth_type type;
3026         enum nl80211_iftype nlmode;
3027         int count = 0;
3028         int is_retry;
3029
3030         nl80211_unmask_11b_rates(bss);
3031
3032         is_retry = drv->retry_auth;
3033         drv->retry_auth = 0;
3034         drv->ignore_deauth_event = 0;
3035
3036         nl80211_mark_disconnected(drv);
3037         os_memset(drv->auth_bssid, 0, ETH_ALEN);
3038         if (params->bssid)
3039                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
3040         else
3041                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
3042         /* FIX: IBSS mode */
3043         nlmode = params->p2p ?
3044                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
3045         if (drv->nlmode != nlmode &&
3046             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
3047                 return -1;
3048
3049 retry:
3050         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
3051                    drv->ifindex);
3052
3053         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
3054         if (!msg)
3055                 goto fail;
3056
3057         for (i = 0; i < 4; i++) {
3058                 if (!params->wep_key[i])
3059                         continue;
3060                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
3061                                            NULL, i,
3062                                            i == params->wep_tx_keyidx, NULL, 0,
3063                                            params->wep_key[i],
3064                                            params->wep_key_len[i]);
3065                 if (params->wep_tx_keyidx != i)
3066                         continue;
3067                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
3068                                params->wep_key[i], params->wep_key_len[i]))
3069                         goto fail;
3070         }
3071
3072         if (params->bssid) {
3073                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3074                            MAC2STR(params->bssid));
3075                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
3076                         goto fail;
3077         }
3078         if (params->freq) {
3079                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3080                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
3081                         goto fail;
3082         }
3083         if (params->ssid) {
3084                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3085                                   params->ssid, params->ssid_len);
3086                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
3087                             params->ssid))
3088                         goto fail;
3089         }
3090         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
3091         if (params->ie &&
3092             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
3093                 goto fail;
3094         if (params->sae_data) {
3095                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
3096                             params->sae_data_len);
3097                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
3098                             params->sae_data))
3099                         goto fail;
3100         }
3101         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3102                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3103         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3104                 type = NL80211_AUTHTYPE_SHARED_KEY;
3105         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3106                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3107         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3108                 type = NL80211_AUTHTYPE_FT;
3109         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
3110                 type = NL80211_AUTHTYPE_SAE;
3111         else
3112                 goto fail;
3113         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3114         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
3115                 goto fail;
3116         if (params->local_state_change) {
3117                 wpa_printf(MSG_DEBUG, "  * Local state change only");
3118                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
3119                         goto fail;
3120         }
3121
3122         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3123         msg = NULL;
3124         if (ret) {
3125                 wpa_dbg(drv->ctx, MSG_DEBUG,
3126                         "nl80211: MLME command failed (auth): ret=%d (%s)",
3127                         ret, strerror(-ret));
3128                 count++;
3129                 if (ret == -EALREADY && count == 1 && params->bssid &&
3130                     !params->local_state_change) {
3131                         /*
3132                          * mac80211 does not currently accept new
3133                          * authentication if we are already authenticated. As a
3134                          * workaround, force deauthentication and try again.
3135                          */
3136                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
3137                                    "after forced deauthentication");
3138                         drv->ignore_deauth_event = 1;
3139                         wpa_driver_nl80211_deauthenticate(
3140                                 bss, params->bssid,
3141                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
3142                         nlmsg_free(msg);
3143                         goto retry;
3144                 }
3145
3146                 if (ret == -ENOENT && params->freq && !is_retry) {
3147                         /*
3148                          * cfg80211 has likely expired the BSS entry even
3149                          * though it was previously available in our internal
3150                          * BSS table. To recover quickly, start a single
3151                          * channel scan on the specified channel.
3152                          */
3153                         struct wpa_driver_scan_params scan;
3154                         int freqs[2];
3155
3156                         os_memset(&scan, 0, sizeof(scan));
3157                         scan.num_ssids = 1;
3158                         if (params->ssid) {
3159                                 scan.ssids[0].ssid = params->ssid;
3160                                 scan.ssids[0].ssid_len = params->ssid_len;
3161                         }
3162                         freqs[0] = params->freq;
3163                         freqs[1] = 0;
3164                         scan.freqs = freqs;
3165                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
3166                                    "channel scan to refresh cfg80211 BSS "
3167                                    "entry");
3168                         ret = wpa_driver_nl80211_scan(bss, &scan);
3169                         if (ret == 0) {
3170                                 nl80211_copy_auth_params(drv, params);
3171                                 drv->scan_for_auth = 1;
3172                         }
3173                 } else if (is_retry) {
3174                         /*
3175                          * Need to indicate this with an event since the return
3176                          * value from the retry is not delivered to core code.
3177                          */
3178                         union wpa_event_data event;
3179                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
3180                                    "failed");
3181                         os_memset(&event, 0, sizeof(event));
3182                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
3183                                   ETH_ALEN);
3184                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
3185                                              &event);
3186                 }
3187         } else {
3188                 wpa_printf(MSG_DEBUG,
3189                            "nl80211: Authentication request send successfully");
3190         }
3191
3192 fail:
3193         nlmsg_free(msg);
3194         return ret;
3195 }
3196
3197
3198 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
3199 {
3200         struct wpa_driver_auth_params params;
3201         struct i802_bss *bss = drv->first_bss;
3202         int i;
3203
3204         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
3205
3206         os_memset(&params, 0, sizeof(params));
3207         params.freq = drv->auth_freq;
3208         params.auth_alg = drv->auth_alg;
3209         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
3210         params.local_state_change = drv->auth_local_state_change;
3211         params.p2p = drv->auth_p2p;
3212
3213         if (!is_zero_ether_addr(drv->auth_bssid_))
3214                 params.bssid = drv->auth_bssid_;
3215
3216         if (drv->auth_ssid_len) {
3217                 params.ssid = drv->auth_ssid;
3218                 params.ssid_len = drv->auth_ssid_len;
3219         }
3220
3221         params.ie = drv->auth_ie;
3222         params.ie_len = drv->auth_ie_len;
3223
3224         for (i = 0; i < 4; i++) {
3225                 if (drv->auth_wep_key_len[i]) {
3226                         params.wep_key[i] = drv->auth_wep_key[i];
3227                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
3228                 }
3229         }
3230
3231         drv->retry_auth = 1;
3232         return wpa_driver_nl80211_authenticate(bss, &params);
3233 }
3234
3235
3236 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
3237                                          const void *data, size_t len,
3238                                          int encrypt, int noack,
3239                                          unsigned int freq, int no_cck,
3240                                          int offchanok, unsigned int wait_time,
3241                                          const u16 *csa_offs,
3242                                          size_t csa_offs_len)
3243 {
3244         struct wpa_driver_nl80211_data *drv = bss->drv;
3245         u64 cookie;
3246         int res;
3247
3248         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
3249                 freq = nl80211_get_assoc_freq(drv);
3250                 wpa_printf(MSG_DEBUG,
3251                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
3252                            freq);
3253         }
3254         if (freq == 0) {
3255                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
3256                            bss->freq);
3257                 freq = bss->freq;
3258         }
3259
3260         if (drv->use_monitor) {
3261                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
3262                            freq, bss->freq);
3263                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
3264         }
3265
3266         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
3267         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
3268                                      &cookie, no_cck, noack, offchanok,
3269                                      csa_offs, csa_offs_len);
3270         if (res == 0 && !noack) {
3271                 const struct ieee80211_mgmt *mgmt;
3272                 u16 fc;
3273
3274                 mgmt = (const struct ieee80211_mgmt *) data;
3275                 fc = le_to_host16(mgmt->frame_control);
3276                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3277                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
3278                         wpa_printf(MSG_MSGDUMP,
3279                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
3280                                    (long long unsigned int)
3281                                    drv->send_action_cookie,
3282                                    (long long unsigned int) cookie);
3283                         drv->send_action_cookie = cookie;
3284                 }
3285         }
3286
3287         return res;
3288 }
3289
3290
3291 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3292                                         size_t data_len, int noack,
3293                                         unsigned int freq, int no_cck,
3294                                         int offchanok,
3295                                         unsigned int wait_time,
3296                                         const u16 *csa_offs,
3297                                         size_t csa_offs_len)
3298 {
3299         struct wpa_driver_nl80211_data *drv = bss->drv;
3300         struct ieee80211_mgmt *mgmt;
3301         int encrypt = 1;
3302         u16 fc;
3303
3304         mgmt = (struct ieee80211_mgmt *) data;
3305         fc = le_to_host16(mgmt->frame_control);
3306         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3307                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3308                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3309                    fc, fc2str(fc), drv->nlmode);
3310
3311         if ((is_sta_interface(drv->nlmode) ||
3312              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3313             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3314             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3315                 /*
3316                  * The use of last_mgmt_freq is a bit of a hack,
3317                  * but it works due to the single-threaded nature
3318                  * of wpa_supplicant.
3319                  */
3320                 if (freq == 0) {
3321                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3322                                    drv->last_mgmt_freq);
3323                         freq = drv->last_mgmt_freq;
3324                 }
3325                 return nl80211_send_frame_cmd(bss, freq, 0,
3326                                               data, data_len, NULL, 1, noack,
3327                                               1, csa_offs, csa_offs_len);
3328         }
3329
3330         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3331                 if (freq == 0) {
3332                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3333                                    bss->freq);
3334                         freq = bss->freq;
3335                 }
3336                 return nl80211_send_frame_cmd(bss, freq,
3337                                               (int) freq == bss->freq ? 0 :
3338                                               wait_time,
3339                                               data, data_len,
3340                                               &drv->send_action_cookie,
3341                                               no_cck, noack, offchanok,
3342                                               csa_offs, csa_offs_len);
3343         }
3344
3345         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3346             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3347                 /*
3348                  * Only one of the authentication frame types is encrypted.
3349                  * In order for static WEP encryption to work properly (i.e.,
3350                  * to not encrypt the frame), we need to tell mac80211 about
3351                  * the frames that must not be encrypted.
3352                  */
3353                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3354                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3355                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3356                         encrypt = 0;
3357         }
3358
3359         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3360         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3361                                              noack, freq, no_cck, offchanok,
3362                                              wait_time, csa_offs,
3363                                              csa_offs_len);
3364 }
3365
3366
3367 static int nl80211_put_basic_rates(struct nl_msg *msg, const int *basic_rates)
3368 {
3369         u8 rates[NL80211_MAX_SUPP_RATES];
3370         u8 rates_len = 0;
3371         int i;
3372
3373         if (!basic_rates)
3374                 return 0;
3375
3376         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3377                 rates[rates_len++] = basic_rates[i] / 5;
3378
3379         return nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3380 }
3381
3382
3383 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3384                            int slot, int ht_opmode, int ap_isolate,
3385                            const int *basic_rates)
3386 {
3387         struct wpa_driver_nl80211_data *drv = bss->drv;
3388         struct nl_msg *msg;
3389
3390         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3391             (cts >= 0 &&
3392              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3393             (preamble >= 0 &&
3394              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3395             (slot >= 0 &&
3396              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3397             (ht_opmode >= 0 &&
3398              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3399             (ap_isolate >= 0 &&
3400              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)) ||
3401             nl80211_put_basic_rates(msg, basic_rates)) {
3402                 nlmsg_free(msg);
3403                 return -ENOBUFS;
3404         }
3405
3406         return send_and_recv_msgs(drv, msg, NULL, NULL);
3407 }
3408
3409
3410 static int wpa_driver_nl80211_set_acl(void *priv,
3411                                       struct hostapd_acl_params *params)
3412 {
3413         struct i802_bss *bss = priv;
3414         struct wpa_driver_nl80211_data *drv = bss->drv;
3415         struct nl_msg *msg;
3416         struct nl_msg *acl;
3417         unsigned int i;
3418         int ret;
3419
3420         if (!(drv->capa.max_acl_mac_addrs))
3421                 return -ENOTSUP;
3422
3423         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3424                 return -ENOTSUP;
3425
3426         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3427                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3428
3429         acl = nlmsg_alloc();
3430         if (!acl)
3431                 return -ENOMEM;
3432         for (i = 0; i < params->num_mac_acl; i++) {
3433                 if (nla_put(acl, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3434                         nlmsg_free(acl);
3435                         return -ENOMEM;
3436                 }
3437         }
3438
3439         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3440             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3441                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3442                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3443             nla_put_nested(msg, NL80211_ATTR_MAC_ADDRS, acl)) {
3444                 nlmsg_free(msg);
3445                 nlmsg_free(acl);
3446                 return -ENOMEM;
3447         }
3448         nlmsg_free(acl);
3449
3450         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3451         if (ret) {
3452                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3453                            ret, strerror(-ret));
3454         }
3455
3456         return ret;
3457 }
3458
3459
3460 static int nl80211_put_beacon_int(struct nl_msg *msg, int beacon_int)
3461 {
3462         if (beacon_int > 0) {
3463                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", beacon_int);
3464                 return nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3465                                    beacon_int);
3466         }
3467
3468         return 0;
3469 }
3470
3471
3472 static int nl80211_put_dtim_period(struct nl_msg *msg, int dtim_period)
3473 {
3474         if (dtim_period > 0) {
3475                 wpa_printf(MSG_DEBUG, "  * dtim_period=%d", dtim_period);
3476                 return nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3477         }
3478
3479         return 0;
3480 }
3481
3482
3483 static int wpa_driver_nl80211_set_ap(void *priv,
3484                                      struct wpa_driver_ap_params *params)
3485 {
3486         struct i802_bss *bss = priv;
3487         struct wpa_driver_nl80211_data *drv = bss->drv;
3488         struct nl_msg *msg;
3489         u8 cmd = NL80211_CMD_NEW_BEACON;
3490         int ret;
3491         int beacon_set;
3492         int num_suites;
3493         int smps_mode;
3494         u32 suites[10], suite;
3495         u32 ver;
3496
3497         beacon_set = params->reenable ? 0 : bss->beacon_set;
3498
3499         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3500                    beacon_set);
3501         if (beacon_set)
3502                 cmd = NL80211_CMD_SET_BEACON;
3503
3504         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3505                     params->head, params->head_len);
3506         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3507                     params->tail, params->tail_len);
3508         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3509         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3510         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3511         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3512                           params->ssid, params->ssid_len);
3513         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3514             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3515                     params->head) ||
3516             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3517                     params->tail) ||
3518             nl80211_put_beacon_int(msg, params->beacon_int) ||
3519             nl80211_put_dtim_period(msg, params->dtim_period) ||
3520             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3521                 goto fail;
3522         if (params->proberesp && params->proberesp_len) {
3523                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3524                             params->proberesp, params->proberesp_len);
3525                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3526                             params->proberesp))
3527                         goto fail;
3528         }
3529         switch (params->hide_ssid) {
3530         case NO_SSID_HIDING:
3531                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3532                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3533                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3534                         goto fail;
3535                 break;
3536         case HIDDEN_SSID_ZERO_LEN:
3537                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3538                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3539                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3540                         goto fail;
3541                 break;
3542         case HIDDEN_SSID_ZERO_CONTENTS:
3543                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3544                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3545                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3546                         goto fail;
3547                 break;
3548         }
3549         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3550         if (params->privacy &&
3551             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3552                 goto fail;
3553         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3554         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3555             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3556                 /* Leave out the attribute */
3557         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3558                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3559                                 NL80211_AUTHTYPE_SHARED_KEY))
3560                         goto fail;
3561         } else {
3562                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3563                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3564                         goto fail;
3565         }
3566
3567         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3568         ver = 0;
3569         if (params->wpa_version & WPA_PROTO_WPA)
3570                 ver |= NL80211_WPA_VERSION_1;
3571         if (params->wpa_version & WPA_PROTO_RSN)
3572                 ver |= NL80211_WPA_VERSION_2;
3573         if (ver &&
3574             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3575                 goto fail;
3576
3577         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3578                    params->key_mgmt_suites);
3579         num_suites = 0;
3580         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3581                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3582         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3583                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3584         if (num_suites &&
3585             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3586                     suites))
3587                 goto fail;
3588
3589         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3590             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3591             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3592                 goto fail;
3593
3594         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3595                    params->pairwise_ciphers);
3596         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3597                                                  suites, ARRAY_SIZE(suites));
3598         if (num_suites &&
3599             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3600                     num_suites * sizeof(u32), suites))
3601                 goto fail;
3602
3603         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3604                    params->group_cipher);
3605         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3606         if (suite &&
3607             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3608                 goto fail;
3609
3610         if (params->ht_opmode != -1) {
3611                 switch (params->smps_mode) {
3612                 case HT_CAP_INFO_SMPS_DYNAMIC:
3613                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3614                         smps_mode = NL80211_SMPS_DYNAMIC;
3615                         break;
3616                 case HT_CAP_INFO_SMPS_STATIC:
3617                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3618                         smps_mode = NL80211_SMPS_STATIC;
3619                         break;
3620                 default:
3621                         /* invalid - fallback to smps off */
3622                 case HT_CAP_INFO_SMPS_DISABLED:
3623                         wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3624                         smps_mode = NL80211_SMPS_OFF;
3625                         break;
3626                 }
3627                 if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3628                         goto fail;
3629         }
3630
3631         if (params->beacon_ies) {
3632                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3633                                 params->beacon_ies);
3634                 if (nla_put(msg, NL80211_ATTR_IE,
3635                             wpabuf_len(params->beacon_ies),
3636                             wpabuf_head(params->beacon_ies)))
3637                         goto fail;
3638         }
3639         if (params->proberesp_ies) {
3640                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3641                                 params->proberesp_ies);
3642                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3643                             wpabuf_len(params->proberesp_ies),
3644                             wpabuf_head(params->proberesp_ies)))
3645                         goto fail;
3646         }
3647         if (params->assocresp_ies) {
3648                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3649                                 params->assocresp_ies);
3650                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3651                             wpabuf_len(params->assocresp_ies),
3652                             wpabuf_head(params->assocresp_ies)))
3653                         goto fail;
3654         }
3655
3656         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3657                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3658                            params->ap_max_inactivity);
3659                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3660                                 params->ap_max_inactivity))
3661                         goto fail;
3662         }
3663
3664 #ifdef CONFIG_P2P
3665         if (params->p2p_go_ctwindow > 0) {
3666                 if (drv->p2p_go_ctwindow_supported) {
3667                         wpa_printf(MSG_DEBUG, "nl80211: P2P GO ctwindow=%d",
3668                                    params->p2p_go_ctwindow);
3669                         if (nla_put_u8(msg, NL80211_ATTR_P2P_CTWINDOW,
3670                                        params->p2p_go_ctwindow))
3671                                 goto fail;
3672                 } else {
3673                         wpa_printf(MSG_INFO,
3674                                    "nl80211: Driver does not support CTWindow configuration - ignore this parameter");
3675                 }
3676         }
3677 #endif /* CONFIG_P2P */
3678
3679         if (params->pbss) {
3680                 wpa_printf(MSG_DEBUG, "nl80211: PBSS");
3681                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
3682                         goto fail;
3683         }
3684
3685         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3686         if (ret) {
3687                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3688                            ret, strerror(-ret));
3689         } else {
3690                 bss->beacon_set = 1;
3691                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3692                                 params->short_slot_time, params->ht_opmode,
3693                                 params->isolate, params->basic_rates);
3694                 if (beacon_set && params->freq &&
3695                     params->freq->bandwidth != bss->bandwidth) {
3696                         wpa_printf(MSG_DEBUG,
3697                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3698                                    bss->ifname, bss->bandwidth,
3699                                    params->freq->bandwidth);
3700                         ret = nl80211_set_channel(bss, params->freq, 1);
3701                         if (ret) {
3702                                 wpa_printf(MSG_DEBUG,
3703                                            "nl80211: Frequency set failed: %d (%s)",
3704                                            ret, strerror(-ret));
3705                         } else {
3706                                 wpa_printf(MSG_DEBUG,
3707                                            "nl80211: Frequency set succeeded for ht2040 coex");
3708                                 bss->bandwidth = params->freq->bandwidth;
3709                         }
3710                 } else if (!beacon_set && params->freq) {
3711                         /*
3712                          * cfg80211 updates the driver on frequence change in AP
3713                          * mode only at the point when beaconing is started, so
3714                          * set the initial value here.
3715                          */
3716                         bss->bandwidth = params->freq->bandwidth;
3717                 }
3718         }
3719         return ret;
3720 fail:
3721         nlmsg_free(msg);
3722         return -ENOBUFS;
3723 }
3724
3725
3726 static int nl80211_put_freq_params(struct nl_msg *msg,
3727                                    const struct hostapd_freq_params *freq)
3728 {
3729         wpa_printf(MSG_DEBUG, "  * freq=%d", freq->freq);
3730         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3731                 return -ENOBUFS;
3732
3733         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", freq->vht_enabled);
3734         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", freq->ht_enabled);
3735
3736         if (freq->vht_enabled) {
3737                 enum nl80211_chan_width cw;
3738
3739                 wpa_printf(MSG_DEBUG, "  * bandwidth=%d", freq->bandwidth);
3740                 switch (freq->bandwidth) {
3741                 case 20:
3742                         cw = NL80211_CHAN_WIDTH_20;
3743                         break;
3744                 case 40:
3745                         cw = NL80211_CHAN_WIDTH_40;
3746                         break;
3747                 case 80:
3748                         if (freq->center_freq2)
3749                                 cw = NL80211_CHAN_WIDTH_80P80;
3750                         else
3751                                 cw = NL80211_CHAN_WIDTH_80;
3752                         break;
3753                 case 160:
3754                         cw = NL80211_CHAN_WIDTH_160;
3755                         break;
3756                 default:
3757                         return -EINVAL;
3758                 }
3759
3760                 wpa_printf(MSG_DEBUG, "  * channel_width=%d", cw);
3761                 wpa_printf(MSG_DEBUG, "  * center_freq1=%d",
3762                            freq->center_freq1);
3763                 wpa_printf(MSG_DEBUG, "  * center_freq2=%d",
3764                            freq->center_freq2);
3765                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3766                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3767                                 freq->center_freq1) ||
3768                     (freq->center_freq2 &&
3769                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3770                                  freq->center_freq2)))
3771                         return -ENOBUFS;
3772         } else if (freq->ht_enabled) {
3773                 enum nl80211_channel_type ct;
3774
3775                 wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
3776                            freq->sec_channel_offset);
3777                 switch (freq->sec_channel_offset) {
3778                 case -1:
3779                         ct = NL80211_CHAN_HT40MINUS;
3780                         break;
3781                 case 1:
3782                         ct = NL80211_CHAN_HT40PLUS;
3783                         break;
3784                 default:
3785                         ct = NL80211_CHAN_HT20;
3786                         break;
3787                 }
3788
3789                 wpa_printf(MSG_DEBUG, "  * channel_type=%d", ct);
3790                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3791                         return -ENOBUFS;
3792         } else {
3793                 wpa_printf(MSG_DEBUG, "  * channel_type=%d",
3794                            NL80211_CHAN_NO_HT);
3795                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3796                                 NL80211_CHAN_NO_HT))
3797                         return -ENOBUFS;
3798         }
3799         return 0;
3800 }
3801
3802
3803 static int nl80211_set_channel(struct i802_bss *bss,
3804                                struct hostapd_freq_params *freq, int set_chan)
3805 {
3806         struct wpa_driver_nl80211_data *drv = bss->drv;
3807         struct nl_msg *msg;
3808         int ret;
3809
3810         wpa_printf(MSG_DEBUG,
3811                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3812                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3813                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3814
3815         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3816                               NL80211_CMD_SET_WIPHY);
3817         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3818                 nlmsg_free(msg);
3819                 return -1;
3820         }
3821
3822         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3823         if (ret == 0) {
3824                 bss->freq = freq->freq;
3825                 return 0;
3826         }
3827         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3828                    "%d (%s)", freq->freq, ret, strerror(-ret));
3829         return -1;
3830 }
3831
3832
3833 static u32 sta_flags_nl80211(int flags)
3834 {
3835         u32 f = 0;
3836
3837         if (flags & WPA_STA_AUTHORIZED)
3838                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3839         if (flags & WPA_STA_WMM)
3840                 f |= BIT(NL80211_STA_FLAG_WME);
3841         if (flags & WPA_STA_SHORT_PREAMBLE)
3842                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3843         if (flags & WPA_STA_MFP)
3844                 f |= BIT(NL80211_STA_FLAG_MFP);
3845         if (flags & WPA_STA_TDLS_PEER)
3846                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3847         if (flags & WPA_STA_AUTHENTICATED)
3848                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3849         if (flags & WPA_STA_ASSOCIATED)
3850                 f |= BIT(NL80211_STA_FLAG_ASSOCIATED);
3851
3852         return f;
3853 }
3854
3855
3856 #ifdef CONFIG_MESH
3857 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3858 {
3859         switch (state) {
3860         case PLINK_IDLE:
3861                 return NL80211_PLINK_LISTEN;
3862         case PLINK_OPN_SNT:
3863                 return NL80211_PLINK_OPN_SNT;
3864         case PLINK_OPN_RCVD:
3865                 return NL80211_PLINK_OPN_RCVD;
3866         case PLINK_CNF_RCVD:
3867                 return NL80211_PLINK_CNF_RCVD;
3868         case PLINK_ESTAB:
3869                 return NL80211_PLINK_ESTAB;
3870         case PLINK_HOLDING:
3871                 return NL80211_PLINK_HOLDING;
3872         case PLINK_BLOCKED:
3873                 return NL80211_PLINK_BLOCKED;
3874         default:
3875                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3876                            state);
3877         }
3878         return -1;
3879 }
3880 #endif /* CONFIG_MESH */
3881
3882
3883 static int wpa_driver_nl80211_sta_add(void *priv,
3884                                       struct hostapd_sta_add_params *params)
3885 {
3886         struct i802_bss *bss = priv;
3887         struct wpa_driver_nl80211_data *drv = bss->drv;
3888         struct nl_msg *msg;
3889         struct nl80211_sta_flag_update upd;
3890         int ret = -ENOBUFS;
3891
3892         if ((params->flags & WPA_STA_TDLS_PEER) &&
3893             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3894                 return -EOPNOTSUPP;
3895
3896         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3897                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3898         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3899                               NL80211_CMD_NEW_STATION);
3900         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3901                 goto fail;
3902
3903         /*
3904          * Set the below properties only in one of the following cases:
3905          * 1. New station is added, already associated.
3906          * 2. Set WPA_STA_TDLS_PEER station.
3907          * 3. Set an already added unassociated station, if driver supports
3908          * full AP client state. (Set these properties after station became
3909          * associated will be rejected by the driver).
3910          */
3911         if (!params->set || (params->flags & WPA_STA_TDLS_PEER) ||
3912             (params->set && FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3913              (params->flags & WPA_STA_ASSOCIATED))) {
3914                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3915                             params->supp_rates, params->supp_rates_len);
3916                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3917                            params->capability);
3918                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3919                             params->supp_rates_len, params->supp_rates) ||
3920                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3921                                 params->capability))
3922                         goto fail;
3923
3924                 if (params->ht_capabilities) {
3925                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3926                                     (u8 *) params->ht_capabilities,
3927                                     sizeof(*params->ht_capabilities));
3928                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3929                                     sizeof(*params->ht_capabilities),
3930                                     params->ht_capabilities))
3931                                 goto fail;
3932                 }
3933
3934                 if (params->vht_capabilities) {
3935                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3936                                     (u8 *) params->vht_capabilities,
3937                                     sizeof(*params->vht_capabilities));
3938                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3939                                     sizeof(*params->vht_capabilities),
3940                                     params->vht_capabilities))
3941                                 goto fail;
3942                 }
3943
3944                 if (params->ext_capab) {
3945                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3946                                     params->ext_capab, params->ext_capab_len);
3947                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3948                                     params->ext_capab_len, params->ext_capab))
3949                                 goto fail;
3950                 }
3951
3952                 if (is_ap_interface(drv->nlmode) &&
3953                     nla_put_u8(msg, NL80211_ATTR_STA_SUPPORT_P2P_PS,
3954                                params->support_p2p_ps ?
3955                                NL80211_P2P_PS_SUPPORTED :
3956                                NL80211_P2P_PS_UNSUPPORTED))
3957                         goto fail;
3958         }
3959         if (!params->set) {
3960                 if (params->aid) {
3961                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3962                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3963                                 goto fail;
3964                 } else {
3965                         /*
3966                          * cfg80211 validates that AID is non-zero, so we have
3967                          * to make this a non-zero value for the TDLS case where
3968                          * a dummy STA entry is used for now and for a station
3969                          * that is still not associated.
3970                          */
3971                         wpa_printf(MSG_DEBUG, "  * aid=1 (%s workaround)",
3972                                    (params->flags & WPA_STA_TDLS_PEER) ?
3973                                    "TDLS" : "UNASSOC_STA");
3974                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3975                                 goto fail;
3976                 }
3977                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3978                            params->listen_interval);
3979                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3980                                 params->listen_interval))
3981                         goto fail;
3982         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3983                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3984                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3985                         goto fail;
3986         } else if (FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags) &&
3987                    (params->flags & WPA_STA_ASSOCIATED)) {
3988                 wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3989                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3990                            params->listen_interval);
3991                 if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid) ||
3992                     nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3993                                 params->listen_interval))
3994                         goto fail;
3995         }
3996
3997         if (params->vht_opmode_enabled) {
3998                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3999                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
4000                                params->vht_opmode))
4001                         goto fail;
4002         }
4003
4004         if (params->supp_channels) {
4005                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
4006                             params->supp_channels, params->supp_channels_len);
4007                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
4008                             params->supp_channels_len, params->supp_channels))
4009                         goto fail;
4010         }
4011
4012         if (params->supp_oper_classes) {
4013                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
4014                             params->supp_oper_classes,
4015                             params->supp_oper_classes_len);
4016                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
4017                             params->supp_oper_classes_len,
4018                             params->supp_oper_classes))
4019                         goto fail;
4020         }
4021
4022         os_memset(&upd, 0, sizeof(upd));
4023         upd.set = sta_flags_nl80211(params->flags);
4024         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
4025
4026         /*
4027          * If the driver doesn't support full AP client state, ignore ASSOC/AUTH
4028          * flags, as nl80211 driver moves a new station, by default, into
4029          * associated state.
4030          *
4031          * On the other hand, if the driver supports that feature and the
4032          * station is added in unauthenticated state, set the
4033          * authenticated/associated bits in the mask to prevent moving this
4034          * station to associated state before it is actually associated.
4035          *
4036          * This is irrelevant for mesh mode where the station is added to the
4037          * driver as authenticated already, and ASSOCIATED isn't part of the
4038          * nl80211 API.
4039          */
4040         if (!is_mesh_interface(drv->nlmode)) {
4041                 if (!FULL_AP_CLIENT_STATE_SUPP(drv->capa.flags)) {
4042                         wpa_printf(MSG_DEBUG,
4043                                    "nl80211: Ignore ASSOC/AUTH flags since driver doesn't support full AP client state");
4044                         upd.mask &= ~(BIT(NL80211_STA_FLAG_ASSOCIATED) |
4045                                       BIT(NL80211_STA_FLAG_AUTHENTICATED));
4046                 } else if (!params->set &&
4047                            !(params->flags & WPA_STA_TDLS_PEER)) {
4048                         if (!(params->flags & WPA_STA_AUTHENTICATED))
4049                                 upd.mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
4050                         if (!(params->flags & WPA_STA_ASSOCIATED))
4051                                 upd.mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
4052                 }
4053 #ifdef CONFIG_MESH
4054         } else {
4055                 if (params->plink_state == PLINK_ESTAB && params->peer_aid) {
4056                         ret = nla_put_u16(msg, NL80211_ATTR_MESH_PEER_AID,
4057                                           params->peer_aid);
4058                         if (ret)
4059                                 goto fail;
4060                 }
4061 #endif /* CONFIG_MESH */
4062         }
4063
4064         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
4065                    upd.set, upd.mask);
4066         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4067                 goto fail;
4068
4069 #ifdef CONFIG_MESH
4070         if (params->plink_state &&
4071             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
4072                        sta_plink_state_nl80211(params->plink_state)))
4073                 goto fail;
4074 #endif /* CONFIG_MESH */
4075
4076         if (params->flags & WPA_STA_WMM) {
4077                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
4078
4079                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
4080                 if (!wme ||
4081                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
4082                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
4083                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
4084                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
4085                                WMM_QOSINFO_STA_SP_MASK))
4086                         goto fail;
4087                 nla_nest_end(msg, wme);
4088         }
4089
4090         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4091         msg = NULL;
4092         if (ret)
4093                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
4094                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
4095                            strerror(-ret));
4096         if (ret == -EEXIST)
4097                 ret = 0;
4098 fail:
4099         nlmsg_free(msg);
4100         return ret;
4101 }
4102
4103
4104 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
4105 {
4106 #ifdef CONFIG_LIBNL3_ROUTE
4107         struct wpa_driver_nl80211_data *drv = bss->drv;
4108         struct rtnl_neigh *rn;
4109         struct nl_addr *nl_addr;
4110         int err;
4111
4112         rn = rtnl_neigh_alloc();
4113         if (!rn)
4114                 return;
4115
4116         rtnl_neigh_set_family(rn, AF_BRIDGE);
4117         rtnl_neigh_set_ifindex(rn, bss->ifindex);
4118         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
4119         if (!nl_addr) {
4120                 rtnl_neigh_put(rn);
4121                 return;
4122         }
4123         rtnl_neigh_set_lladdr(rn, nl_addr);
4124
4125         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
4126         if (err < 0) {
4127                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
4128                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
4129                            bss->ifindex, nl_geterror(err));
4130         } else {
4131                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
4132                            MACSTR, MAC2STR(addr));
4133         }
4134
4135         nl_addr_put(nl_addr);
4136         rtnl_neigh_put(rn);
4137 #endif /* CONFIG_LIBNL3_ROUTE */
4138 }
4139
4140
4141 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
4142                                          int deauth, u16 reason_code)
4143 {
4144         struct wpa_driver_nl80211_data *drv = bss->drv;
4145         struct nl_msg *msg;
4146         int ret;
4147
4148         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
4149             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
4150             (deauth == 0 &&
4151              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4152                         WLAN_FC_STYPE_DISASSOC)) ||
4153             (deauth == 1 &&
4154              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
4155                         WLAN_FC_STYPE_DEAUTH)) ||
4156             (reason_code &&
4157              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
4158                 nlmsg_free(msg);
4159                 return -ENOBUFS;
4160         }
4161
4162         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4163         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
4164                    " --> %d (%s)",
4165                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
4166
4167         if (drv->rtnl_sk)
4168                 rtnl_neigh_delete_fdb_entry(bss, addr);
4169
4170         if (ret == -ENOENT)
4171                 return 0;
4172         return ret;
4173 }
4174
4175
4176 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
4177 {
4178         struct nl_msg *msg;
4179         struct wpa_driver_nl80211_data *drv2;
4180
4181         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
4182
4183         /* stop listening for EAPOL on this interface */
4184         dl_list_for_each(drv2, &drv->global->interfaces,
4185                          struct wpa_driver_nl80211_data, list)
4186         {
4187                 del_ifidx(drv2, ifidx, IFIDX_ANY);
4188                 /* Remove all bridges learned for this iface */
4189                 del_ifidx(drv2, IFIDX_ANY, ifidx);
4190         }
4191
4192         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
4193         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4194                 return;
4195         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
4196 }
4197
4198
4199 const char * nl80211_iftype_str(enum nl80211_iftype mode)
4200 {
4201         switch (mode) {
4202         case NL80211_IFTYPE_ADHOC:
4203                 return "ADHOC";
4204         case NL80211_IFTYPE_STATION:
4205                 return "STATION";
4206         case NL80211_IFTYPE_AP:
4207                 return "AP";
4208         case NL80211_IFTYPE_AP_VLAN:
4209                 return "AP_VLAN";
4210         case NL80211_IFTYPE_WDS:
4211                 return "WDS";
4212         case NL80211_IFTYPE_MONITOR:
4213                 return "MONITOR";
4214         case NL80211_IFTYPE_MESH_POINT:
4215                 return "MESH_POINT";
4216         case NL80211_IFTYPE_P2P_CLIENT:
4217                 return "P2P_CLIENT";
4218         case NL80211_IFTYPE_P2P_GO:
4219                 return "P2P_GO";
4220         case NL80211_IFTYPE_P2P_DEVICE:
4221                 return "P2P_DEVICE";
4222         default:
4223                 return "unknown";
4224         }
4225 }
4226
4227
4228 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
4229                                      const char *ifname,
4230                                      enum nl80211_iftype iftype,
4231                                      const u8 *addr, int wds,
4232                                      int (*handler)(struct nl_msg *, void *),
4233                                      void *arg)
4234 {
4235         struct nl_msg *msg;
4236         int ifidx;
4237         int ret = -ENOBUFS;
4238
4239         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
4240                    iftype, nl80211_iftype_str(iftype));
4241
4242         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
4243         if (!msg ||
4244             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
4245             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
4246                 goto fail;
4247
4248         if (iftype == NL80211_IFTYPE_MONITOR) {
4249                 struct nlattr *flags;
4250
4251                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
4252                 if (!flags ||
4253                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
4254                         goto fail;
4255
4256                 nla_nest_end(msg, flags);
4257         } else if (wds) {
4258                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
4259                         goto fail;
4260         }
4261
4262         /*
4263          * Tell cfg80211 that the interface belongs to the socket that created
4264          * it, and the interface should be deleted when the socket is closed.
4265          */
4266         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
4267                 goto fail;
4268
4269         ret = send_and_recv_msgs(drv, msg, handler, arg);
4270         msg = NULL;
4271         if (ret) {
4272         fail:
4273                 nlmsg_free(msg);
4274                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
4275                            ifname, ret, strerror(-ret));
4276                 return ret;
4277         }
4278
4279         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
4280                 return 0;
4281
4282         ifidx = if_nametoindex(ifname);
4283         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
4284                    ifname, ifidx);
4285
4286         if (ifidx <= 0)
4287                 return -1;
4288
4289         /*
4290          * Some virtual interfaces need to process EAPOL packets and events on
4291          * the parent interface. This is used mainly with hostapd.
4292          */
4293         if (drv->hostapd ||
4294             iftype == NL80211_IFTYPE_AP_VLAN ||
4295             iftype == NL80211_IFTYPE_WDS ||
4296             iftype == NL80211_IFTYPE_MONITOR) {
4297                 /* start listening for EAPOL on this interface */
4298                 add_ifidx(drv, ifidx, IFIDX_ANY);
4299         }
4300
4301         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4302             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
4303                 nl80211_remove_iface(drv, ifidx);
4304                 return -1;
4305         }
4306
4307         return ifidx;
4308 }
4309
4310
4311 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
4312                          const char *ifname, enum nl80211_iftype iftype,
4313                          const u8 *addr, int wds,
4314                          int (*handler)(struct nl_msg *, void *),
4315                          void *arg, int use_existing)
4316 {
4317         int ret;
4318
4319         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
4320                                         arg);
4321
4322         /* if error occurred and interface exists already */
4323         if (ret == -ENFILE && if_nametoindex(ifname)) {
4324                 if (use_existing) {
4325                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
4326                                    ifname);
4327                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
4328                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4329                                                addr) < 0 &&
4330                             (linux_set_iface_flags(drv->global->ioctl_sock,
4331                                                    ifname, 0) < 0 ||
4332                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
4333                                                 addr) < 0 ||
4334                              linux_set_iface_flags(drv->global->ioctl_sock,
4335                                                    ifname, 1) < 0))
4336                                         return -1;
4337                         return -ENFILE;
4338                 }
4339                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
4340
4341                 /* Try to remove the interface that was already there. */
4342                 nl80211_remove_iface(drv, if_nametoindex(ifname));
4343
4344                 /* Try to create the interface again */
4345                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
4346                                                 wds, handler, arg);
4347         }
4348
4349         if (ret >= 0 && is_p2p_net_interface(iftype)) {
4350                 wpa_printf(MSG_DEBUG,
4351                            "nl80211: Interface %s created for P2P - disable 11b rates",
4352                            ifname);
4353                 nl80211_disable_11b_rates(drv, ret, 1);
4354         }
4355
4356         return ret;
4357 }
4358
4359
4360 static int nl80211_setup_ap(struct i802_bss *bss)
4361 {
4362         struct wpa_driver_nl80211_data *drv = bss->drv;
4363
4364         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
4365                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4366
4367         /*
4368          * Disable Probe Request reporting unless we need it in this way for
4369          * devices that include the AP SME, in the other case (unless using
4370          * monitor iface) we'll get it through the nl_mgmt socket instead.
4371          */
4372         if (!drv->device_ap_sme)
4373                 wpa_driver_nl80211_probe_req_report(bss, 0);
4374
4375         if (!drv->device_ap_sme && !drv->use_monitor)
4376                 if (nl80211_mgmt_subscribe_ap(bss))
4377                         return -1;
4378
4379         if (drv->device_ap_sme && !drv->use_monitor)
4380                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
4381                         wpa_printf(MSG_DEBUG,
4382                                    "nl80211: Failed to subscribe for mgmt frames from SME driver - trying to run without it");
4383
4384         if (!drv->device_ap_sme && drv->use_monitor &&
4385             nl80211_create_monitor_interface(drv) &&
4386             !drv->device_ap_sme)
4387                 return -1;
4388
4389         if (drv->device_ap_sme &&
4390             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
4391                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
4392                            "Probe Request frame reporting in AP mode");
4393                 /* Try to survive without this */
4394         }
4395
4396         return 0;
4397 }
4398
4399
4400 static void nl80211_teardown_ap(struct i802_bss *bss)
4401 {
4402         struct wpa_driver_nl80211_data *drv = bss->drv;
4403
4404         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
4405                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
4406         if (drv->device_ap_sme) {
4407                 wpa_driver_nl80211_probe_req_report(bss, 0);
4408                 if (!drv->use_monitor)
4409                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
4410         } else if (drv->use_monitor)
4411                 nl80211_remove_monitor_interface(drv);
4412         else
4413                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
4414
4415         bss->beacon_set = 0;
4416 }
4417
4418
4419 static int nl80211_send_eapol_data(struct i802_bss *bss,
4420                                    const u8 *addr, const u8 *data,
4421                                    size_t data_len)
4422 {
4423         struct sockaddr_ll ll;
4424         int ret;
4425
4426         if (bss->drv->eapol_tx_sock < 0) {
4427                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
4428                 return -1;
4429         }
4430
4431         os_memset(&ll, 0, sizeof(ll));
4432         ll.sll_family = AF_PACKET;
4433         ll.sll_ifindex = bss->ifindex;
4434         ll.sll_protocol = htons(ETH_P_PAE);
4435         ll.sll_halen = ETH_ALEN;
4436         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4437         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4438                      (struct sockaddr *) &ll, sizeof(ll));
4439         if (ret < 0)
4440                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4441                            strerror(errno));
4442
4443         return ret;
4444 }
4445
4446
4447 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4448
4449 static int wpa_driver_nl80211_hapd_send_eapol(
4450         void *priv, const u8 *addr, const u8 *data,
4451         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4452 {
4453         struct i802_bss *bss = priv;
4454         struct wpa_driver_nl80211_data *drv = bss->drv;
4455         struct ieee80211_hdr *hdr;
4456         size_t len;
4457         u8 *pos;
4458         int res;
4459         int qos = flags & WPA_STA_WMM;
4460
4461         if (drv->device_ap_sme || !drv->use_monitor)
4462                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4463
4464         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4465                 data_len;
4466         hdr = os_zalloc(len);
4467         if (hdr == NULL) {
4468                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4469                            (unsigned long) len);
4470                 return -1;
4471         }
4472
4473         hdr->frame_control =
4474                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4475         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4476         if (encrypt)
4477                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4478         if (qos) {
4479                 hdr->frame_control |=
4480                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4481         }
4482
4483         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4484         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4485         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4486         pos = (u8 *) (hdr + 1);
4487
4488         if (qos) {
4489                 /* Set highest priority in QoS header */
4490                 pos[0] = 7;
4491                 pos[1] = 0;
4492                 pos += 2;
4493         }
4494
4495         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4496         pos += sizeof(rfc1042_header);
4497         WPA_PUT_BE16(pos, ETH_P_PAE);
4498         pos += 2;
4499         memcpy(pos, data, data_len);
4500
4501         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4502                                             0, 0, 0, 0, NULL, 0);
4503         if (res < 0) {
4504                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4505                            "failed: %d (%s)",
4506                            (unsigned long) len, errno, strerror(errno));
4507         }
4508         os_free(hdr);
4509
4510         return res;
4511 }
4512
4513
4514 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4515                                             unsigned int total_flags,
4516                                             unsigned int flags_or,
4517                                             unsigned int flags_and)
4518 {
4519         struct i802_bss *bss = priv;
4520         struct nl_msg *msg;
4521         struct nlattr *flags;
4522         struct nl80211_sta_flag_update upd;
4523
4524         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4525                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4526                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4527                    !!(total_flags & WPA_STA_AUTHORIZED));
4528
4529         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4530             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4531                 goto fail;
4532
4533         /*
4534          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4535          * can be removed eventually.
4536          */
4537         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4538         if (!flags ||
4539             ((total_flags & WPA_STA_AUTHORIZED) &&
4540              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4541             ((total_flags & WPA_STA_WMM) &&
4542              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4543             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4544              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4545             ((total_flags & WPA_STA_MFP) &&
4546              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4547             ((total_flags & WPA_STA_TDLS_PEER) &&
4548              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4549                 goto fail;
4550
4551         nla_nest_end(msg, flags);
4552
4553         os_memset(&upd, 0, sizeof(upd));
4554         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4555         upd.set = sta_flags_nl80211(flags_or);
4556         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4557                 goto fail;
4558
4559         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4560 fail:
4561         nlmsg_free(msg);
4562         return -ENOBUFS;
4563 }
4564
4565
4566 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4567                                  struct wpa_driver_associate_params *params)
4568 {
4569         enum nl80211_iftype nlmode, old_mode;
4570
4571         if (params->p2p) {
4572                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4573                            "group (GO)");
4574                 nlmode = NL80211_IFTYPE_P2P_GO;
4575         } else
4576                 nlmode = NL80211_IFTYPE_AP;
4577
4578         old_mode = drv->nlmode;
4579         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4580                 nl80211_remove_monitor_interface(drv);
4581                 return -1;
4582         }
4583
4584         if (params->freq.freq &&
4585             nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4586                 if (old_mode != nlmode)
4587                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4588                 nl80211_remove_monitor_interface(drv);
4589                 return -1;
4590         }
4591
4592         return 0;
4593 }
4594
4595
4596 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4597                               int reset_mode)
4598 {
4599         struct nl_msg *msg;
4600         int ret;
4601
4602         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4603         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4604         if (ret) {
4605                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4606                            "(%s)", ret, strerror(-ret));
4607         } else {
4608                 wpa_printf(MSG_DEBUG,
4609                            "nl80211: Leave IBSS request sent successfully");
4610         }
4611
4612         if (reset_mode &&
4613             wpa_driver_nl80211_set_mode(drv->first_bss,
4614                                         NL80211_IFTYPE_STATION)) {
4615                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4616                            "station mode");
4617         }
4618
4619         return ret;
4620 }
4621
4622
4623 static int nl80211_ht_vht_overrides(struct nl_msg *msg,
4624                                     struct wpa_driver_associate_params *params)
4625 {
4626         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4627                 return -1;
4628
4629         if (params->htcaps && params->htcaps_mask) {
4630                 int sz = sizeof(struct ieee80211_ht_capabilities);
4631                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4632                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4633                             params->htcaps_mask, sz);
4634                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4635                             params->htcaps) ||
4636                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4637                             params->htcaps_mask))
4638                         return -1;
4639         }
4640
4641 #ifdef CONFIG_VHT_OVERRIDES
4642         if (params->disable_vht) {
4643                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4644                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4645                         return -1;
4646         }
4647
4648         if (params->vhtcaps && params->vhtcaps_mask) {
4649                 int sz = sizeof(struct ieee80211_vht_capabilities);
4650                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4651                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4652                             params->vhtcaps_mask, sz);
4653                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4654                             params->vhtcaps) ||
4655                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4656                             params->vhtcaps_mask))
4657                         return -1;
4658         }
4659 #endif /* CONFIG_VHT_OVERRIDES */
4660
4661         return 0;
4662 }
4663
4664
4665 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4666                                    struct wpa_driver_associate_params *params)
4667 {
4668         struct nl_msg *msg;
4669         int ret = -1;
4670         int count = 0;
4671
4672         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4673
4674         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4675                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4676                            "IBSS mode");
4677                 return -1;
4678         }
4679
4680 retry:
4681         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4682             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4683                 goto fail;
4684
4685         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4686                           params->ssid, params->ssid_len);
4687         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4688                 goto fail;
4689         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4690         drv->ssid_len = params->ssid_len;
4691
4692         if (nl80211_put_freq_params(msg, &params->freq) < 0 ||
4693             nl80211_put_beacon_int(msg, params->beacon_int))
4694                 goto fail;
4695
4696         ret = nl80211_set_conn_keys(params, msg);
4697         if (ret)
4698                 goto fail;
4699
4700         if (params->bssid && params->fixed_bssid) {
4701                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4702                            MAC2STR(params->bssid));
4703                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4704                         goto fail;
4705         }
4706
4707         if (params->fixed_freq) {
4708                 wpa_printf(MSG_DEBUG, "  * fixed_freq");
4709                 if (nla_put_flag(msg, NL80211_ATTR_FREQ_FIXED))
4710                         goto fail;
4711         }
4712
4713         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4714             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4715             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4716             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4717                 wpa_printf(MSG_DEBUG, "  * control port");
4718                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4719                         goto fail;
4720         }
4721
4722         if (params->wpa_ie) {
4723                 wpa_hexdump(MSG_DEBUG,
4724                             "  * Extra IEs for Beacon/Probe Response frames",
4725                             params->wpa_ie, params->wpa_ie_len);
4726                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4727                             params->wpa_ie))
4728                         goto fail;
4729         }
4730
4731         ret = nl80211_ht_vht_overrides(msg, params);
4732         if (ret < 0)
4733                 goto fail;
4734
4735         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4736         msg = NULL;
4737         if (ret) {
4738                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4739                            ret, strerror(-ret));
4740                 count++;
4741                 if (ret == -EALREADY && count == 1) {
4742                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4743                                    "forced leave");
4744                         nl80211_leave_ibss(drv, 0);
4745                         nlmsg_free(msg);
4746                         goto retry;
4747                 }
4748         } else {
4749                 wpa_printf(MSG_DEBUG,
4750                            "nl80211: Join IBSS request sent successfully");
4751         }
4752
4753 fail:
4754         nlmsg_free(msg);
4755         return ret;
4756 }
4757
4758
4759 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4760                                   struct wpa_driver_associate_params *params,
4761                                   struct nl_msg *msg)
4762 {
4763         if (params->bssid) {
4764                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4765                            MAC2STR(params->bssid));
4766                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4767                         return -1;
4768         }
4769
4770         if (params->bssid_hint) {
4771                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4772                            MAC2STR(params->bssid_hint));
4773                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4774                             params->bssid_hint))
4775                         return -1;
4776         }
4777
4778         if (params->freq.freq) {
4779                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4780                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4781                                 params->freq.freq))
4782                         return -1;
4783                 drv->assoc_freq = params->freq.freq;
4784         } else
4785                 drv->assoc_freq = 0;
4786
4787         if (params->freq_hint) {
4788                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4789                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4790                                 params->freq_hint))
4791                         return -1;
4792         }
4793
4794         if (params->bg_scan_period >= 0) {
4795                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4796                            params->bg_scan_period);
4797                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4798                                 params->bg_scan_period))
4799                         return -1;
4800         }
4801
4802         if (params->ssid) {
4803                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4804                                   params->ssid, params->ssid_len);
4805                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4806                             params->ssid))
4807                         return -1;
4808                 if (params->ssid_len > sizeof(drv->ssid))
4809                         return -1;
4810                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4811                 drv->ssid_len = params->ssid_len;
4812         }
4813
4814         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4815         if (params->wpa_ie &&
4816             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4817                 return -1;
4818
4819         if (params->wpa_proto) {
4820                 enum nl80211_wpa_versions ver = 0;
4821
4822                 if (params->wpa_proto & WPA_PROTO_WPA)
4823                         ver |= NL80211_WPA_VERSION_1;
4824                 if (params->wpa_proto & WPA_PROTO_RSN)
4825                         ver |= NL80211_WPA_VERSION_2;
4826
4827                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4828                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4829                         return -1;
4830         }
4831
4832         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4833                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4834                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4835                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4836                                 cipher))
4837                         return -1;
4838         }
4839
4840         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4841             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4842                 /*
4843                  * This is likely to work even though many drivers do not
4844                  * advertise support for operations without GTK.
4845                  */
4846                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4847         } else if (params->group_suite != WPA_CIPHER_NONE) {
4848                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4849                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4850                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4851                         return -1;
4852         }
4853
4854         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4855             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4856             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4857             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4858             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4859             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4860             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4861             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4862             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
4863             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
4864                 int mgmt = WLAN_AKM_SUITE_PSK;
4865
4866                 switch (params->key_mgmt_suite) {
4867                 case WPA_KEY_MGMT_CCKM:
4868                         mgmt = WLAN_AKM_SUITE_CCKM;
4869                         break;
4870                 case WPA_KEY_MGMT_IEEE8021X:
4871                         mgmt = WLAN_AKM_SUITE_8021X;
4872                         break;
4873                 case WPA_KEY_MGMT_FT_IEEE8021X:
4874                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4875                         break;
4876                 case WPA_KEY_MGMT_FT_PSK:
4877                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4878                         break;
4879                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4880                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4881                         break;
4882                 case WPA_KEY_MGMT_PSK_SHA256:
4883                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4884                         break;
4885                 case WPA_KEY_MGMT_OSEN:
4886                         mgmt = WLAN_AKM_SUITE_OSEN;
4887                         break;
4888                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4889                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4890                         break;
4891                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192:
4892                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B_192;
4893                         break;
4894                 case WPA_KEY_MGMT_PSK:
4895                 default:
4896                         mgmt = WLAN_AKM_SUITE_PSK;
4897                         break;
4898                 }
4899                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4900                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4901                         return -1;
4902         }
4903
4904         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4905                 return -1;
4906
4907         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4908             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4909                 return -1;
4910
4911         if (params->rrm_used) {
4912                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4913                 if ((!((drv_rrm_flags &
4914                         WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
4915                        (drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
4916                      !(drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) ||
4917                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4918                         return -1;
4919         }
4920
4921         if (nl80211_ht_vht_overrides(msg, params) < 0)
4922                 return -1;
4923
4924         if (params->p2p)
4925                 wpa_printf(MSG_DEBUG, "  * P2P group");
4926
4927         if (params->pbss) {
4928                 wpa_printf(MSG_DEBUG, "  * PBSS");
4929                 if (nla_put_flag(msg, NL80211_ATTR_PBSS))
4930                         return -1;
4931         }
4932
4933         drv->connect_reassoc = 0;
4934         if (params->prev_bssid) {
4935                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4936                            MAC2STR(params->prev_bssid));
4937                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4938                             params->prev_bssid))
4939                         return -1;
4940                 drv->connect_reassoc = 1;
4941         }
4942
4943         return 0;
4944 }
4945
4946
4947 static int wpa_driver_nl80211_try_connect(
4948         struct wpa_driver_nl80211_data *drv,
4949         struct wpa_driver_associate_params *params)
4950 {
4951         struct nl_msg *msg;
4952         enum nl80211_auth_type type;
4953         int ret;
4954         int algs;
4955
4956 #ifdef CONFIG_DRIVER_NL80211_QCA
4957         if (params->req_key_mgmt_offload && params->psk &&
4958             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4959              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4960              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4961                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4962                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4963                 if (ret)
4964                         return ret;
4965         }
4966 #endif /* CONFIG_DRIVER_NL80211_QCA */
4967
4968         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4969         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4970         if (!msg)
4971                 return -1;
4972
4973         ret = nl80211_connect_common(drv, params, msg);
4974         if (ret)
4975                 goto fail;
4976
4977         algs = 0;
4978         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4979                 algs++;
4980         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4981                 algs++;
4982         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4983                 algs++;
4984         if (algs > 1) {
4985                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4986                            "selection");
4987                 goto skip_auth_type;
4988         }
4989
4990         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4991                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4992         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4993                 type = NL80211_AUTHTYPE_SHARED_KEY;
4994         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4995                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4996         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4997                 type = NL80211_AUTHTYPE_FT;
4998         else
4999                 goto fail;
5000
5001         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
5002         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
5003                 goto fail;
5004
5005 skip_auth_type:
5006         ret = nl80211_set_conn_keys(params, msg);
5007         if (ret)
5008                 goto fail;
5009
5010         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5011         msg = NULL;
5012         if (ret) {
5013                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
5014                            "(%s)", ret, strerror(-ret));
5015         } else {
5016                 wpa_printf(MSG_DEBUG,
5017                            "nl80211: Connect request send successfully");
5018         }
5019
5020 fail:
5021         nlmsg_free(msg);
5022         return ret;
5023
5024 }
5025
5026
5027 static int wpa_driver_nl80211_connect(
5028         struct wpa_driver_nl80211_data *drv,
5029         struct wpa_driver_associate_params *params)
5030 {
5031         int ret;
5032
5033         /* Store the connection attempted bssid for future use */
5034         if (params->bssid)
5035                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
5036         else
5037                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
5038
5039         ret = wpa_driver_nl80211_try_connect(drv, params);
5040         if (ret == -EALREADY) {
5041                 /*
5042                  * cfg80211 does not currently accept new connections if
5043                  * we are already connected. As a workaround, force
5044                  * disconnection and try again.
5045                  */
5046                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
5047                            "disconnecting before reassociation "
5048                            "attempt");
5049                 if (wpa_driver_nl80211_disconnect(
5050                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
5051                         return -1;
5052                 ret = wpa_driver_nl80211_try_connect(drv, params);
5053         }
5054         return ret;
5055 }
5056
5057
5058 static int wpa_driver_nl80211_associate(
5059         void *priv, struct wpa_driver_associate_params *params)
5060 {
5061         struct i802_bss *bss = priv;
5062         struct wpa_driver_nl80211_data *drv = bss->drv;
5063         int ret = -1;
5064         struct nl_msg *msg;
5065
5066         nl80211_unmask_11b_rates(bss);
5067
5068         if (params->mode == IEEE80211_MODE_AP)
5069                 return wpa_driver_nl80211_ap(drv, params);
5070
5071         if (params->mode == IEEE80211_MODE_IBSS)
5072                 return wpa_driver_nl80211_ibss(drv, params);
5073
5074         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
5075                 enum nl80211_iftype nlmode = params->p2p ?
5076                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
5077
5078                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
5079                         return -1;
5080                 return wpa_driver_nl80211_connect(drv, params);
5081         }
5082
5083         nl80211_mark_disconnected(drv);
5084
5085         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
5086                    drv->ifindex);
5087         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
5088         if (!msg)
5089                 return -1;
5090
5091         ret = nl80211_connect_common(drv, params, msg);
5092         if (ret)
5093                 goto fail;
5094
5095         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5096         msg = NULL;
5097         if (ret) {
5098                 wpa_dbg(drv->ctx, MSG_DEBUG,
5099                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
5100                         ret, strerror(-ret));
5101                 nl80211_dump_scan(drv);
5102         } else {
5103                 wpa_printf(MSG_DEBUG,
5104                            "nl80211: Association request send successfully");
5105         }
5106
5107 fail:
5108         nlmsg_free(msg);
5109         return ret;
5110 }
5111
5112
5113 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
5114                             int ifindex, enum nl80211_iftype mode)
5115 {
5116         struct nl_msg *msg;
5117         int ret = -ENOBUFS;
5118
5119         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
5120                    ifindex, mode, nl80211_iftype_str(mode));
5121
5122         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
5123         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
5124                 goto fail;
5125
5126         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5127         msg = NULL;
5128         if (!ret)
5129                 return 0;
5130 fail:
5131         nlmsg_free(msg);
5132         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
5133                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
5134         return ret;
5135 }
5136
5137
5138 static int wpa_driver_nl80211_set_mode_impl(
5139                 struct i802_bss *bss,
5140                 enum nl80211_iftype nlmode,
5141                 struct hostapd_freq_params *desired_freq_params)
5142 {
5143         struct wpa_driver_nl80211_data *drv = bss->drv;
5144         int ret = -1;
5145         int i;
5146         int was_ap = is_ap_interface(drv->nlmode);
5147         int res;
5148         int mode_switch_res;
5149
5150         if (TEST_FAIL())
5151                 return -1;
5152
5153         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5154         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
5155                 mode_switch_res = 0;
5156
5157         if (mode_switch_res == 0) {
5158                 drv->nlmode = nlmode;
5159                 ret = 0;
5160                 goto done;
5161         }
5162
5163         if (mode_switch_res == -ENODEV)
5164                 return -1;
5165
5166         if (nlmode == drv->nlmode) {
5167                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
5168                            "requested mode - ignore error");
5169                 ret = 0;
5170                 goto done; /* Already in the requested mode */
5171         }
5172
5173         /* mac80211 doesn't allow mode changes while the device is up, so
5174          * take the device down, try to set the mode again, and bring the
5175          * device back up.
5176          */
5177         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
5178                    "interface down");
5179         for (i = 0; i < 10; i++) {
5180                 res = i802_set_iface_flags(bss, 0);
5181                 if (res == -EACCES || res == -ENODEV)
5182                         break;
5183                 if (res != 0) {
5184                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
5185                                    "interface down");
5186                         os_sleep(0, 100000);
5187                         continue;
5188                 }
5189
5190                 /*
5191                  * Setting the mode will fail for some drivers if the phy is
5192                  * on a frequency that the mode is disallowed in.
5193                  */
5194                 if (desired_freq_params) {
5195                         res = nl80211_set_channel(bss, desired_freq_params, 0);
5196                         if (res) {
5197                                 wpa_printf(MSG_DEBUG,
5198                                            "nl80211: Failed to set frequency on interface");
5199                         }
5200                 }
5201
5202                 /* Try to set the mode again while the interface is down */
5203                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
5204                 if (mode_switch_res == -EBUSY) {
5205                         wpa_printf(MSG_DEBUG,
5206                                    "nl80211: Delaying mode set while interface going down");
5207                         os_sleep(0, 100000);
5208                         continue;
5209                 }
5210                 ret = mode_switch_res;
5211                 break;
5212         }
5213
5214         if (!ret) {
5215                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
5216                            "interface is down");
5217                 drv->nlmode = nlmode;
5218                 drv->ignore_if_down_event = 1;
5219         }
5220
5221         /* Bring the interface back up */
5222         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
5223         if (res != 0) {
5224                 wpa_printf(MSG_DEBUG,
5225                            "nl80211: Failed to set interface up after switching mode");
5226                 ret = -1;
5227         }
5228
5229 done:
5230         if (ret) {
5231                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
5232                            "from %d failed", nlmode, drv->nlmode);
5233                 return ret;
5234         }
5235
5236         if (is_p2p_net_interface(nlmode)) {
5237                 wpa_printf(MSG_DEBUG,
5238                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
5239                            bss->ifname);
5240                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
5241         } else if (drv->disabled_11b_rates) {
5242                 wpa_printf(MSG_DEBUG,
5243                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
5244                            bss->ifname);
5245                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
5246         }
5247
5248         if (is_ap_interface(nlmode)) {
5249                 nl80211_mgmt_unsubscribe(bss, "start AP");
5250                 /* Setup additional AP mode functionality if needed */
5251                 if (nl80211_setup_ap(bss))
5252                         return -1;
5253         } else if (was_ap) {
5254                 /* Remove additional AP mode functionality */
5255                 nl80211_teardown_ap(bss);
5256         } else {
5257                 nl80211_mgmt_unsubscribe(bss, "mode change");
5258         }
5259
5260         if (is_mesh_interface(nlmode) &&
5261             nl80211_mgmt_subscribe_mesh(bss))
5262                 return -1;
5263
5264         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
5265             !is_mesh_interface(nlmode) &&
5266             nl80211_mgmt_subscribe_non_ap(bss) < 0)
5267                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
5268                            "frame processing - ignore for now");
5269
5270         return 0;
5271 }
5272
5273
5274 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
5275                                 enum nl80211_iftype nlmode)
5276 {
5277         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
5278 }
5279
5280
5281 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
5282                                             struct hostapd_freq_params *freq)
5283 {
5284         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
5285                                                 freq);
5286 }
5287
5288
5289 static int wpa_driver_nl80211_get_capa(void *priv,
5290                                        struct wpa_driver_capa *capa)
5291 {
5292         struct i802_bss *bss = priv;
5293         struct wpa_driver_nl80211_data *drv = bss->drv;
5294
5295         if (!drv->has_capability)
5296                 return -1;
5297         os_memcpy(capa, &drv->capa, sizeof(*capa));
5298         if (drv->extended_capa && drv->extended_capa_mask) {
5299                 capa->extended_capa = drv->extended_capa;
5300                 capa->extended_capa_mask = drv->extended_capa_mask;
5301                 capa->extended_capa_len = drv->extended_capa_len;
5302         }
5303
5304         return 0;
5305 }
5306
5307
5308 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
5309 {
5310         struct i802_bss *bss = priv;
5311         struct wpa_driver_nl80211_data *drv = bss->drv;
5312
5313         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
5314                    bss->ifname, drv->operstate, state,
5315                    state ? "UP" : "DORMANT");
5316         drv->operstate = state;
5317         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
5318                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
5319 }
5320
5321
5322 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
5323 {
5324         struct i802_bss *bss = priv;
5325         struct wpa_driver_nl80211_data *drv = bss->drv;
5326         struct nl_msg *msg;
5327         struct nl80211_sta_flag_update upd;
5328         int ret;
5329
5330         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
5331                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
5332                 return 0;
5333         }
5334
5335         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
5336                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
5337
5338         os_memset(&upd, 0, sizeof(upd));
5339         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
5340         if (authorized)
5341                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
5342
5343         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5344             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
5345             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
5346                 nlmsg_free(msg);
5347                 return -ENOBUFS;
5348         }
5349
5350         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5351         if (!ret)
5352                 return 0;
5353         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
5354                    ret, strerror(-ret));
5355         return ret;
5356 }
5357
5358
5359 /* Set kernel driver on given frequency (MHz) */
5360 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
5361 {
5362         struct i802_bss *bss = priv;
5363         return nl80211_set_channel(bss, freq, 0);
5364 }
5365
5366
5367 static inline int min_int(int a, int b)
5368 {
5369         if (a < b)
5370                 return a;
5371         return b;
5372 }
5373
5374
5375 static int get_key_handler(struct nl_msg *msg, void *arg)
5376 {
5377         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5378         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5379
5380         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5381                   genlmsg_attrlen(gnlh, 0), NULL);
5382
5383         /*
5384          * TODO: validate the key index and mac address!
5385          * Otherwise, there's a race condition as soon as
5386          * the kernel starts sending key notifications.
5387          */
5388
5389         if (tb[NL80211_ATTR_KEY_SEQ])
5390                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
5391                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
5392         return NL_SKIP;
5393 }
5394
5395
5396 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
5397                            int idx, u8 *seq)
5398 {
5399         struct i802_bss *bss = priv;
5400         struct wpa_driver_nl80211_data *drv = bss->drv;
5401         struct nl_msg *msg;
5402
5403         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
5404                                   NL80211_CMD_GET_KEY);
5405         if (!msg ||
5406             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
5407             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
5408                 nlmsg_free(msg);
5409                 return -ENOBUFS;
5410         }
5411
5412         memset(seq, 0, 6);
5413
5414         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
5415 }
5416
5417
5418 static int i802_set_rts(void *priv, int rts)
5419 {
5420         struct i802_bss *bss = priv;
5421         struct wpa_driver_nl80211_data *drv = bss->drv;
5422         struct nl_msg *msg;
5423         int ret;
5424         u32 val;
5425
5426         if (rts >= 2347)
5427                 val = (u32) -1;
5428         else
5429                 val = rts;
5430
5431         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5432             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
5433                 nlmsg_free(msg);
5434                 return -ENOBUFS;
5435         }
5436
5437         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5438         if (!ret)
5439                 return 0;
5440         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
5441                    "%d (%s)", rts, ret, strerror(-ret));
5442         return ret;
5443 }
5444
5445
5446 static int i802_set_frag(void *priv, int frag)
5447 {
5448         struct i802_bss *bss = priv;
5449         struct wpa_driver_nl80211_data *drv = bss->drv;
5450         struct nl_msg *msg;
5451         int ret;
5452         u32 val;
5453
5454         if (frag >= 2346)
5455                 val = (u32) -1;
5456         else
5457                 val = frag;
5458
5459         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5460             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5461                 nlmsg_free(msg);
5462                 return -ENOBUFS;
5463         }
5464
5465         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5466         if (!ret)
5467                 return 0;
5468         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5469                    "%d: %d (%s)", frag, ret, strerror(-ret));
5470         return ret;
5471 }
5472
5473
5474 static int i802_flush(void *priv)
5475 {
5476         struct i802_bss *bss = priv;
5477         struct nl_msg *msg;
5478         int res;
5479
5480         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5481                    bss->ifname);
5482
5483         /*
5484          * XXX: FIX! this needs to flush all VLANs too
5485          */
5486         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5487         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5488         if (res) {
5489                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5490                            "(%s)", res, strerror(-res));
5491         }
5492         return res;
5493 }
5494
5495
5496 static int get_sta_handler(struct nl_msg *msg, void *arg)
5497 {
5498         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5499         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5500         struct hostap_sta_driver_data *data = arg;
5501         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5502         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5503                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5504                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5505                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5506                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5507                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5508                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5509                 [NL80211_STA_INFO_RX_BYTES64] = { .type = NLA_U64 },
5510                 [NL80211_STA_INFO_TX_BYTES64] = { .type = NLA_U64 },
5511         };
5512
5513         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5514                   genlmsg_attrlen(gnlh, 0), NULL);
5515
5516         /*
5517          * TODO: validate the interface and mac address!
5518          * Otherwise, there's a race condition as soon as
5519          * the kernel starts sending station notifications.
5520          */
5521
5522         if (!tb[NL80211_ATTR_STA_INFO]) {
5523                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5524                 return NL_SKIP;
5525         }
5526         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5527                              tb[NL80211_ATTR_STA_INFO],
5528                              stats_policy)) {
5529                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5530                 return NL_SKIP;
5531         }
5532
5533         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5534                 data->inactive_msec =
5535                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5536         /* For backwards compatibility, fetch the 32-bit counters first. */
5537         if (stats[NL80211_STA_INFO_RX_BYTES])
5538                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5539         if (stats[NL80211_STA_INFO_TX_BYTES])
5540                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5541         if (stats[NL80211_STA_INFO_RX_BYTES64] &&
5542             stats[NL80211_STA_INFO_TX_BYTES64]) {
5543                 /*
5544                  * The driver supports 64-bit counters, so use them to override
5545                  * the 32-bit values.
5546                  */
5547                 data->rx_bytes =
5548                         nla_get_u64(stats[NL80211_STA_INFO_RX_BYTES64]);
5549                 data->tx_bytes =
5550                         nla_get_u64(stats[NL80211_STA_INFO_TX_BYTES64]);
5551                 data->bytes_64bit = 1;
5552         }
5553         if (stats[NL80211_STA_INFO_RX_PACKETS])
5554                 data->rx_packets =
5555                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5556         if (stats[NL80211_STA_INFO_TX_PACKETS])
5557                 data->tx_packets =
5558                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5559         if (stats[NL80211_STA_INFO_TX_FAILED])
5560                 data->tx_retry_failed =
5561                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5562
5563         return NL_SKIP;
5564 }
5565
5566 static int i802_read_sta_data(struct i802_bss *bss,
5567                               struct hostap_sta_driver_data *data,
5568                               const u8 *addr)
5569 {
5570         struct nl_msg *msg;
5571
5572         os_memset(data, 0, sizeof(*data));
5573
5574         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5575             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5576                 nlmsg_free(msg);
5577                 return -ENOBUFS;
5578         }
5579
5580         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5581 }
5582
5583
5584 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5585                                     int cw_min, int cw_max, int burst_time)
5586 {
5587         struct i802_bss *bss = priv;
5588         struct wpa_driver_nl80211_data *drv = bss->drv;
5589         struct nl_msg *msg;
5590         struct nlattr *txq, *params;
5591
5592         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5593         if (!msg)
5594                 return -1;
5595
5596         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5597         if (!txq)
5598                 goto fail;
5599
5600         /* We are only sending parameters for a single TXQ at a time */
5601         params = nla_nest_start(msg, 1);
5602         if (!params)
5603                 goto fail;
5604
5605         switch (queue) {
5606         case 0:
5607                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5608                         goto fail;
5609                 break;
5610         case 1:
5611                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5612                         goto fail;
5613                 break;
5614         case 2:
5615                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5616                         goto fail;
5617                 break;
5618         case 3:
5619                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5620                         goto fail;
5621                 break;
5622         }
5623         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5624          * 32 usec, so need to convert the value here. */
5625         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5626                         (burst_time * 100 + 16) / 32) ||
5627             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5628             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5629             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5630                 goto fail;
5631
5632         nla_nest_end(msg, params);
5633
5634         nla_nest_end(msg, txq);
5635
5636         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5637                 return 0;
5638         msg = NULL;
5639 fail:
5640         nlmsg_free(msg);
5641         return -1;
5642 }
5643
5644
5645 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5646                              const char *ifname, int vlan_id)
5647 {
5648         struct wpa_driver_nl80211_data *drv = bss->drv;
5649         struct nl_msg *msg;
5650         int ret;
5651
5652         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5653                    ", ifname=%s[%d], vlan_id=%d)",
5654                    bss->ifname, if_nametoindex(bss->ifname),
5655                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5656         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5657             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5658             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5659                 nlmsg_free(msg);
5660                 return -ENOBUFS;
5661         }
5662
5663         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5664         if (ret < 0) {
5665                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5666                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5667                            MAC2STR(addr), ifname, vlan_id, ret,
5668                            strerror(-ret));
5669         }
5670         return ret;
5671 }
5672
5673
5674 static int i802_get_inact_sec(void *priv, const u8 *addr)
5675 {
5676         struct hostap_sta_driver_data data;
5677         int ret;
5678
5679         data.inactive_msec = (unsigned long) -1;
5680         ret = i802_read_sta_data(priv, &data, addr);
5681         if (ret == -ENOENT)
5682                 return -ENOENT;
5683         if (ret || data.inactive_msec == (unsigned long) -1)
5684                 return -1;
5685         return data.inactive_msec / 1000;
5686 }
5687
5688
5689 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5690 {
5691 #if 0
5692         /* TODO */
5693 #endif
5694         return 0;
5695 }
5696
5697
5698 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5699                            int reason)
5700 {
5701         struct i802_bss *bss = priv;
5702         struct wpa_driver_nl80211_data *drv = bss->drv;
5703         struct ieee80211_mgmt mgmt;
5704
5705         if (is_mesh_interface(drv->nlmode))
5706                 return -1;
5707
5708         if (drv->device_ap_sme)
5709                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5710
5711         memset(&mgmt, 0, sizeof(mgmt));
5712         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5713                                           WLAN_FC_STYPE_DEAUTH);
5714         memcpy(mgmt.da, addr, ETH_ALEN);
5715         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5716         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5717         mgmt.u.deauth.reason_code = host_to_le16(reason);
5718         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5719                                             IEEE80211_HDRLEN +
5720                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5721                                             0, NULL, 0);
5722 }
5723
5724
5725 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5726                              int reason)
5727 {
5728         struct i802_bss *bss = priv;
5729         struct wpa_driver_nl80211_data *drv = bss->drv;
5730         struct ieee80211_mgmt mgmt;
5731
5732         if (is_mesh_interface(drv->nlmode))
5733                 return -1;
5734
5735         if (drv->device_ap_sme)
5736                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5737
5738         memset(&mgmt, 0, sizeof(mgmt));
5739         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5740                                           WLAN_FC_STYPE_DISASSOC);
5741         memcpy(mgmt.da, addr, ETH_ALEN);
5742         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5743         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5744         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5745         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5746                                             IEEE80211_HDRLEN +
5747                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5748                                             0, NULL, 0);
5749 }
5750
5751
5752 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5753 {
5754         char buf[200], *pos, *end;
5755         int i, res;
5756
5757         pos = buf;
5758         end = pos + sizeof(buf);
5759
5760         for (i = 0; i < drv->num_if_indices; i++) {
5761                 if (!drv->if_indices[i])
5762                         continue;
5763                 res = os_snprintf(pos, end - pos, " %d(%d)",
5764                                   drv->if_indices[i],
5765                                   drv->if_indices_reason[i]);
5766                 if (os_snprintf_error(end - pos, res))
5767                         break;
5768                 pos += res;
5769         }
5770         *pos = '\0';
5771
5772         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5773                    drv->num_if_indices, buf);
5774 }
5775
5776
5777 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5778                       int ifidx_reason)
5779 {
5780         int i;
5781         int *old, *old_reason;
5782
5783         wpa_printf(MSG_DEBUG,
5784                    "nl80211: Add own interface ifindex %d (ifidx_reason %d)",
5785                    ifidx, ifidx_reason);
5786         if (have_ifidx(drv, ifidx, ifidx_reason)) {
5787                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5788                            ifidx);
5789                 return;
5790         }
5791         for (i = 0; i < drv->num_if_indices; i++) {
5792                 if (drv->if_indices[i] == 0) {
5793                         drv->if_indices[i] = ifidx;
5794                         drv->if_indices_reason[i] = ifidx_reason;
5795                         dump_ifidx(drv);
5796                         return;
5797                 }
5798         }
5799
5800         if (drv->if_indices != drv->default_if_indices)
5801                 old = drv->if_indices;
5802         else
5803                 old = NULL;
5804
5805         if (drv->if_indices_reason != drv->default_if_indices_reason)
5806                 old_reason = drv->if_indices_reason;
5807         else
5808                 old_reason = NULL;
5809
5810         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5811                                            sizeof(int));
5812         drv->if_indices_reason = os_realloc_array(old_reason,
5813                                                   drv->num_if_indices + 1,
5814                                                   sizeof(int));
5815         if (!drv->if_indices) {
5816                 if (!old)
5817                         drv->if_indices = drv->default_if_indices;
5818                 else
5819                         drv->if_indices = old;
5820         }
5821         if (!drv->if_indices_reason) {
5822                 if (!old_reason)
5823                         drv->if_indices_reason = drv->default_if_indices_reason;
5824                 else
5825                         drv->if_indices_reason = old_reason;
5826         }
5827         if (!drv->if_indices || !drv->if_indices_reason) {
5828                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5829                            "interfaces");
5830                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5831                 return;
5832         }
5833         if (!old)
5834                 os_memcpy(drv->if_indices, drv->default_if_indices,
5835                           sizeof(drv->default_if_indices));
5836         if (!old_reason)
5837                 os_memcpy(drv->if_indices_reason,
5838                           drv->default_if_indices_reason,
5839                           sizeof(drv->default_if_indices_reason));
5840         drv->if_indices[drv->num_if_indices] = ifidx;
5841         drv->if_indices_reason[drv->num_if_indices] = ifidx_reason;
5842         drv->num_if_indices++;
5843         dump_ifidx(drv);
5844 }
5845
5846
5847 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5848                       int ifidx_reason)
5849 {
5850         int i;
5851
5852         for (i = 0; i < drv->num_if_indices; i++) {
5853                 if ((drv->if_indices[i] == ifidx || ifidx == IFIDX_ANY) &&
5854                     (drv->if_indices_reason[i] == ifidx_reason ||
5855                      ifidx_reason == IFIDX_ANY)) {
5856                         drv->if_indices[i] = 0;
5857                         break;
5858                 }
5859         }
5860         dump_ifidx(drv);
5861 }
5862
5863
5864 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx,
5865                       int ifidx_reason)
5866 {
5867         int i;
5868
5869         for (i = 0; i < drv->num_if_indices; i++)
5870                 if (drv->if_indices[i] == ifidx &&
5871                     (drv->if_indices_reason[i] == ifidx_reason ||
5872                      ifidx_reason == IFIDX_ANY))
5873                         return 1;
5874
5875         return 0;
5876 }
5877
5878
5879 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5880                             const char *bridge_ifname, char *ifname_wds)
5881 {
5882         struct i802_bss *bss = priv;
5883         struct wpa_driver_nl80211_data *drv = bss->drv;
5884         char name[IFNAMSIZ + 1];
5885
5886         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5887         if (ifname_wds)
5888                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5889
5890         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5891                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5892         if (val) {
5893                 if (!if_nametoindex(name)) {
5894                         if (nl80211_create_iface(drv, name,
5895                                                  NL80211_IFTYPE_AP_VLAN,
5896                                                  bss->addr, 1, NULL, NULL, 0) <
5897                             0)
5898                                 return -1;
5899                         if (bridge_ifname &&
5900                             linux_br_add_if(drv->global->ioctl_sock,
5901                                             bridge_ifname, name) < 0)
5902                                 return -1;
5903                 }
5904                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5905                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5906                                    "interface %s up", name);
5907                 }
5908                 return i802_set_sta_vlan(priv, addr, name, 0);
5909         } else {
5910                 if (bridge_ifname)
5911                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5912                                         name);
5913
5914                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5915                 nl80211_remove_iface(drv, if_nametoindex(name));
5916                 return 0;
5917         }
5918 }
5919
5920
5921 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5922 {
5923         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5924         struct sockaddr_ll lladdr;
5925         unsigned char buf[3000];
5926         int len;
5927         socklen_t fromlen = sizeof(lladdr);
5928
5929         len = recvfrom(sock, buf, sizeof(buf), 0,
5930                        (struct sockaddr *)&lladdr, &fromlen);
5931         if (len < 0) {
5932                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5933                            strerror(errno));
5934                 return;
5935         }
5936
5937         if (have_ifidx(drv, lladdr.sll_ifindex, IFIDX_ANY))
5938                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5939 }
5940
5941
5942 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5943                              struct i802_bss *bss,
5944                              const char *brname, const char *ifname)
5945 {
5946         int br_ifindex;
5947         char in_br[IFNAMSIZ];
5948
5949         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5950         br_ifindex = if_nametoindex(brname);
5951         if (br_ifindex == 0) {
5952                 /*
5953                  * Bridge was configured, but the bridge device does
5954                  * not exist. Try to add it now.
5955                  */
5956                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5957                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5958                                    "bridge interface %s: %s",
5959                                    brname, strerror(errno));
5960                         return -1;
5961                 }
5962                 bss->added_bridge = 1;
5963                 br_ifindex = if_nametoindex(brname);
5964                 add_ifidx(drv, br_ifindex, drv->ifindex);
5965         }
5966         bss->br_ifindex = br_ifindex;
5967
5968         if (linux_br_get(in_br, ifname) == 0) {
5969                 if (os_strcmp(in_br, brname) == 0)
5970                         return 0; /* already in the bridge */
5971
5972                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5973                            "bridge %s", ifname, in_br);
5974                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5975                     0) {
5976                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5977                                    "remove interface %s from bridge "
5978                                    "%s: %s",
5979                                    ifname, brname, strerror(errno));
5980                         return -1;
5981                 }
5982         }
5983
5984         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5985                    ifname, brname);
5986         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5987                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5988                            "into bridge %s: %s",
5989                            ifname, brname, strerror(errno));
5990                 return -1;
5991         }
5992         bss->added_if_into_bridge = 1;
5993
5994         return 0;
5995 }
5996
5997
5998 static void *i802_init(struct hostapd_data *hapd,
5999                        struct wpa_init_params *params)
6000 {
6001         struct wpa_driver_nl80211_data *drv;
6002         struct i802_bss *bss;
6003         size_t i;
6004         char master_ifname[IFNAMSIZ];
6005         int ifindex, br_ifindex = 0;
6006         int br_added = 0;
6007
6008         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
6009                                           params->global_priv, 1,
6010                                           params->bssid, params->driver_params);
6011         if (bss == NULL)
6012                 return NULL;
6013
6014         drv = bss->drv;
6015
6016         if (linux_br_get(master_ifname, params->ifname) == 0) {
6017                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
6018                            params->ifname, master_ifname);
6019                 br_ifindex = if_nametoindex(master_ifname);
6020                 os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
6021         } else if ((params->num_bridge == 0 || !params->bridge[0]) &&
6022                    linux_master_get(master_ifname, params->ifname) == 0) {
6023                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in master %s",
6024                         params->ifname, master_ifname);
6025                 /* start listening for EAPOL on the master interface */
6026                 add_ifidx(drv, if_nametoindex(master_ifname), drv->ifindex);
6027
6028                 /* check if master itself is under bridge */
6029                 if (linux_br_get(master_ifname, master_ifname) == 0) {
6030                         wpa_printf(MSG_DEBUG, "nl80211: which is in bridge %s",
6031                                    master_ifname);
6032                         br_ifindex = if_nametoindex(master_ifname);
6033                         os_strlcpy(bss->brname, master_ifname, IFNAMSIZ);
6034                 }
6035         } else {
6036                 master_ifname[0] = '\0';
6037         }
6038
6039         bss->br_ifindex = br_ifindex;
6040
6041         for (i = 0; i < params->num_bridge; i++) {
6042                 if (params->bridge[i]) {
6043                         ifindex = if_nametoindex(params->bridge[i]);
6044                         if (ifindex)
6045                                 add_ifidx(drv, ifindex, drv->ifindex);
6046                         if (ifindex == br_ifindex)
6047                                 br_added = 1;
6048                 }
6049         }
6050
6051         /* start listening for EAPOL on the default AP interface */
6052         add_ifidx(drv, drv->ifindex, IFIDX_ANY);
6053
6054         if (params->num_bridge && params->bridge[0]) {
6055                 if (i802_check_bridge(drv, bss, params->bridge[0],
6056                                       params->ifname) < 0)
6057                         goto failed;
6058                 if (os_strcmp(params->bridge[0], master_ifname) != 0)
6059                         br_added = 1;
6060         }
6061
6062         if (!br_added && br_ifindex &&
6063             (params->num_bridge == 0 || !params->bridge[0]))
6064                 add_ifidx(drv, br_ifindex, drv->ifindex);
6065
6066 #ifdef CONFIG_LIBNL3_ROUTE
6067         if (bss->added_if_into_bridge) {
6068                 drv->rtnl_sk = nl_socket_alloc();
6069                 if (drv->rtnl_sk == NULL) {
6070                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
6071                         goto failed;
6072                 }
6073
6074                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
6075                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
6076                                    strerror(errno));
6077                         goto failed;
6078                 }
6079         }
6080 #endif /* CONFIG_LIBNL3_ROUTE */
6081
6082         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
6083         if (drv->eapol_sock < 0) {
6084                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
6085                            strerror(errno));
6086                 goto failed;
6087         }
6088
6089         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
6090         {
6091                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
6092                 goto failed;
6093         }
6094
6095         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
6096                                params->own_addr))
6097                 goto failed;
6098         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
6099
6100         memcpy(bss->addr, params->own_addr, ETH_ALEN);
6101
6102         return bss;
6103
6104 failed:
6105         wpa_driver_nl80211_deinit(bss);
6106         return NULL;
6107 }
6108
6109
6110 static void i802_deinit(void *priv)
6111 {
6112         struct i802_bss *bss = priv;
6113         wpa_driver_nl80211_deinit(bss);
6114 }
6115
6116
6117 static enum nl80211_iftype wpa_driver_nl80211_if_type(
6118         enum wpa_driver_if_type type)
6119 {
6120         switch (type) {
6121         case WPA_IF_STATION:
6122                 return NL80211_IFTYPE_STATION;
6123         case WPA_IF_P2P_CLIENT:
6124         case WPA_IF_P2P_GROUP:
6125                 return NL80211_IFTYPE_P2P_CLIENT;
6126         case WPA_IF_AP_VLAN:
6127                 return NL80211_IFTYPE_AP_VLAN;
6128         case WPA_IF_AP_BSS:
6129                 return NL80211_IFTYPE_AP;
6130         case WPA_IF_P2P_GO:
6131                 return NL80211_IFTYPE_P2P_GO;
6132         case WPA_IF_P2P_DEVICE:
6133                 return NL80211_IFTYPE_P2P_DEVICE;
6134         case WPA_IF_MESH:
6135                 return NL80211_IFTYPE_MESH_POINT;
6136         default:
6137                 return -1;
6138         }
6139 }
6140
6141
6142 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
6143 {
6144         struct wpa_driver_nl80211_data *drv;
6145         dl_list_for_each(drv, &global->interfaces,
6146                          struct wpa_driver_nl80211_data, list) {
6147                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
6148                         return 1;
6149         }
6150         return 0;
6151 }
6152
6153
6154 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
6155 {
6156         unsigned int idx;
6157
6158         if (!drv->global)
6159                 return -1;
6160
6161         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
6162         for (idx = 0; idx < 64; idx++) {
6163                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
6164                 new_addr[0] ^= idx << 2;
6165                 if (!nl80211_addr_in_use(drv->global, new_addr))
6166                         break;
6167         }
6168         if (idx == 64)
6169                 return -1;
6170
6171         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
6172                    MACSTR, MAC2STR(new_addr));
6173
6174         return 0;
6175 }
6176
6177
6178 struct wdev_info {
6179         u64 wdev_id;
6180         int wdev_id_set;
6181         u8 macaddr[ETH_ALEN];
6182 };
6183
6184 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
6185 {
6186         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6187         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6188         struct wdev_info *wi = arg;
6189
6190         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6191                   genlmsg_attrlen(gnlh, 0), NULL);
6192         if (tb[NL80211_ATTR_WDEV]) {
6193                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
6194                 wi->wdev_id_set = 1;
6195         }
6196
6197         if (tb[NL80211_ATTR_MAC])
6198                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
6199                           ETH_ALEN);
6200
6201         return NL_SKIP;
6202 }
6203
6204
6205 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
6206                                      const char *ifname, const u8 *addr,
6207                                      void *bss_ctx, void **drv_priv,
6208                                      char *force_ifname, u8 *if_addr,
6209                                      const char *bridge, int use_existing,
6210                                      int setup_ap)
6211 {
6212         enum nl80211_iftype nlmode;
6213         struct i802_bss *bss = priv;
6214         struct wpa_driver_nl80211_data *drv = bss->drv;
6215         int ifidx;
6216         int added = 1;
6217
6218         if (addr)
6219                 os_memcpy(if_addr, addr, ETH_ALEN);
6220         nlmode = wpa_driver_nl80211_if_type(type);
6221         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
6222                 struct wdev_info p2pdev_info;
6223
6224                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
6225                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6226                                              0, nl80211_wdev_handler,
6227                                              &p2pdev_info, use_existing);
6228                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
6229                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
6230                                    ifname);
6231                         return -1;
6232                 }
6233
6234                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
6235                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
6236                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
6237                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
6238                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
6239                            ifname,
6240                            (long long unsigned int) p2pdev_info.wdev_id);
6241         } else {
6242                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
6243                                              0, NULL, NULL, use_existing);
6244                 if (use_existing && ifidx == -ENFILE) {
6245                         added = 0;
6246                         ifidx = if_nametoindex(ifname);
6247                 } else if (ifidx < 0) {
6248                         return -1;
6249                 }
6250         }
6251
6252         if (!addr) {
6253                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
6254                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
6255                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
6256                                             ifname, if_addr) < 0) {
6257                         if (added)
6258                                 nl80211_remove_iface(drv, ifidx);
6259                         return -1;
6260                 }
6261         }
6262
6263         if (!addr &&
6264             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
6265              type == WPA_IF_P2P_GO || type == WPA_IF_MESH ||
6266              type == WPA_IF_STATION)) {
6267                 /* Enforce unique address */
6268                 u8 new_addr[ETH_ALEN];
6269
6270                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
6271                                        new_addr) < 0) {
6272                         if (added)
6273                                 nl80211_remove_iface(drv, ifidx);
6274                         return -1;
6275                 }
6276                 if (nl80211_addr_in_use(drv->global, new_addr)) {
6277                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
6278                                    "for interface %s type %d", ifname, type);
6279                         if (nl80211_vif_addr(drv, new_addr) < 0) {
6280                                 if (added)
6281                                         nl80211_remove_iface(drv, ifidx);
6282                                 return -1;
6283                         }
6284                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
6285                                                new_addr) < 0) {
6286                                 if (added)
6287                                         nl80211_remove_iface(drv, ifidx);
6288                                 return -1;
6289                         }
6290                 }
6291                 os_memcpy(if_addr, new_addr, ETH_ALEN);
6292         }
6293
6294         if (type == WPA_IF_AP_BSS && setup_ap) {
6295                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
6296                 if (new_bss == NULL) {
6297                         if (added)
6298                                 nl80211_remove_iface(drv, ifidx);
6299                         return -1;
6300                 }
6301
6302                 if (bridge &&
6303                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
6304                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
6305                                    "interface %s to a bridge %s",
6306                                    ifname, bridge);
6307                         if (added)
6308                                 nl80211_remove_iface(drv, ifidx);
6309                         os_free(new_bss);
6310                         return -1;
6311                 }
6312
6313                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
6314                 {
6315                         if (added)
6316                                 nl80211_remove_iface(drv, ifidx);
6317                         os_free(new_bss);
6318                         return -1;
6319                 }
6320                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
6321                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
6322                 new_bss->ifindex = ifidx;
6323                 new_bss->drv = drv;
6324                 new_bss->next = drv->first_bss->next;
6325                 new_bss->freq = drv->first_bss->freq;
6326                 new_bss->ctx = bss_ctx;
6327                 new_bss->added_if = added;
6328                 drv->first_bss->next = new_bss;
6329                 if (drv_priv)
6330                         *drv_priv = new_bss;
6331                 nl80211_init_bss(new_bss);
6332
6333                 /* Subscribe management frames for this WPA_IF_AP_BSS */
6334                 if (nl80211_setup_ap(new_bss))
6335                         return -1;
6336         }
6337
6338         if (drv->global)
6339                 drv->global->if_add_ifindex = ifidx;
6340
6341         /*
6342          * Some virtual interfaces need to process EAPOL packets and events on
6343          * the parent interface. This is used mainly with hostapd.
6344          */
6345         if (ifidx > 0 &&
6346             (drv->hostapd ||
6347              nlmode == NL80211_IFTYPE_AP_VLAN ||
6348              nlmode == NL80211_IFTYPE_WDS ||
6349              nlmode == NL80211_IFTYPE_MONITOR))
6350                 add_ifidx(drv, ifidx, IFIDX_ANY);
6351
6352         return 0;
6353 }
6354
6355
6356 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
6357                                         enum wpa_driver_if_type type,
6358                                         const char *ifname)
6359 {
6360         struct wpa_driver_nl80211_data *drv = bss->drv;
6361         int ifindex = if_nametoindex(ifname);
6362
6363         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
6364                    __func__, type, ifname, ifindex, bss->added_if);
6365         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
6366                 nl80211_remove_iface(drv, ifindex);
6367         else if (ifindex > 0 && !bss->added_if) {
6368                 struct wpa_driver_nl80211_data *drv2;
6369                 dl_list_for_each(drv2, &drv->global->interfaces,
6370                                  struct wpa_driver_nl80211_data, list) {
6371                         del_ifidx(drv2, ifindex, IFIDX_ANY);
6372                         del_ifidx(drv2, IFIDX_ANY, ifindex);
6373                 }
6374         }
6375
6376         if (type != WPA_IF_AP_BSS)
6377                 return 0;
6378
6379         if (bss->added_if_into_bridge) {
6380                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
6381                                     bss->ifname) < 0)
6382                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6383                                    "interface %s from bridge %s: %s",
6384                                    bss->ifname, bss->brname, strerror(errno));
6385         }
6386         if (bss->added_bridge) {
6387                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
6388                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
6389                                    "bridge %s: %s",
6390                                    bss->brname, strerror(errno));
6391         }
6392
6393         if (bss != drv->first_bss) {
6394                 struct i802_bss *tbss;
6395
6396                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
6397                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
6398                         if (tbss->next == bss) {
6399                                 tbss->next = bss->next;
6400                                 /* Unsubscribe management frames */
6401                                 nl80211_teardown_ap(bss);
6402                                 nl80211_destroy_bss(bss);
6403                                 if (!bss->added_if)
6404                                         i802_set_iface_flags(bss, 0);
6405                                 os_free(bss);
6406                                 bss = NULL;
6407                                 break;
6408                         }
6409                 }
6410                 if (bss)
6411                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
6412                                    "BSS %p in the list", __func__, bss);
6413         } else {
6414                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
6415                 nl80211_teardown_ap(bss);
6416                 if (!bss->added_if && !drv->first_bss->next)
6417                         wpa_driver_nl80211_del_beacon(drv);
6418                 nl80211_destroy_bss(bss);
6419                 if (!bss->added_if)
6420                         i802_set_iface_flags(bss, 0);
6421                 if (drv->first_bss->next) {
6422                         drv->first_bss = drv->first_bss->next;
6423                         drv->ctx = drv->first_bss->ctx;
6424                         os_free(bss);
6425                 } else {
6426                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
6427                 }
6428         }
6429
6430         return 0;
6431 }
6432
6433
6434 static int cookie_handler(struct nl_msg *msg, void *arg)
6435 {
6436         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6437         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6438         u64 *cookie = arg;
6439         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6440                   genlmsg_attrlen(gnlh, 0), NULL);
6441         if (tb[NL80211_ATTR_COOKIE])
6442                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
6443         return NL_SKIP;
6444 }
6445
6446
6447 static int nl80211_send_frame_cmd(struct i802_bss *bss,
6448                                   unsigned int freq, unsigned int wait,
6449                                   const u8 *buf, size_t buf_len,
6450                                   u64 *cookie_out, int no_cck, int no_ack,
6451                                   int offchanok, const u16 *csa_offs,
6452                                   size_t csa_offs_len)
6453 {
6454         struct wpa_driver_nl80211_data *drv = bss->drv;
6455         struct nl_msg *msg;
6456         u64 cookie;
6457         int ret = -1;
6458
6459         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
6460                    "no_ack=%d offchanok=%d",
6461                    freq, wait, no_cck, no_ack, offchanok);
6462         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
6463
6464         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
6465             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
6466             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
6467             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6468                            drv->test_use_roc_tx) &&
6469              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
6470             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
6471             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
6472             (csa_offs && nla_put(msg, NL80211_ATTR_CSA_C_OFFSETS_TX,
6473                                  csa_offs_len * sizeof(u16), csa_offs)) ||
6474             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
6475                 goto fail;
6476
6477         cookie = 0;
6478         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6479         msg = NULL;
6480         if (ret) {
6481                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
6482                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
6483                            freq, wait);
6484         } else {
6485                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
6486                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
6487                            (long long unsigned int) cookie);
6488
6489                 if (cookie_out)
6490                         *cookie_out = no_ack ? (u64) -1 : cookie;
6491
6492                 if (drv->num_send_action_cookies == MAX_SEND_ACTION_COOKIES) {
6493                         wpa_printf(MSG_DEBUG,
6494                                    "nl80211: Drop oldest pending send action cookie 0x%llx",
6495                                    (long long unsigned int)
6496                                    drv->send_action_cookies[0]);
6497                         os_memmove(&drv->send_action_cookies[0],
6498                                    &drv->send_action_cookies[1],
6499                                    (MAX_SEND_ACTION_COOKIES - 1) *
6500                                    sizeof(u64));
6501                         drv->num_send_action_cookies--;
6502                 }
6503                 drv->send_action_cookies[drv->num_send_action_cookies] = cookie;
6504                 drv->num_send_action_cookies++;
6505         }
6506
6507 fail:
6508         nlmsg_free(msg);
6509         return ret;
6510 }
6511
6512
6513 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
6514                                           unsigned int freq,
6515                                           unsigned int wait_time,
6516                                           const u8 *dst, const u8 *src,
6517                                           const u8 *bssid,
6518                                           const u8 *data, size_t data_len,
6519                                           int no_cck)
6520 {
6521         struct wpa_driver_nl80211_data *drv = bss->drv;
6522         int ret = -1;
6523         u8 *buf;
6524         struct ieee80211_hdr *hdr;
6525
6526         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
6527                    "freq=%u MHz wait=%d ms no_cck=%d)",
6528                    drv->ifindex, freq, wait_time, no_cck);
6529
6530         buf = os_zalloc(24 + data_len);
6531         if (buf == NULL)
6532                 return ret;
6533         os_memcpy(buf + 24, data, data_len);
6534         hdr = (struct ieee80211_hdr *) buf;
6535         hdr->frame_control =
6536                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6537         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6538         os_memcpy(hdr->addr2, src, ETH_ALEN);
6539         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6540
6541         if (is_ap_interface(drv->nlmode) &&
6542             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6543              (int) freq == bss->freq || drv->device_ap_sme ||
6544              !drv->use_monitor))
6545                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6546                                                    0, freq, no_cck, 1,
6547                                                    wait_time, NULL, 0);
6548         else
6549                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6550                                              24 + data_len,
6551                                              &drv->send_action_cookie,
6552                                              no_cck, 0, 1, NULL, 0);
6553
6554         os_free(buf);
6555         return ret;
6556 }
6557
6558
6559 static void nl80211_frame_wait_cancel(struct i802_bss *bss, u64 cookie)
6560 {
6561         struct wpa_driver_nl80211_data *drv = bss->drv;
6562         struct nl_msg *msg;
6563         int ret;
6564
6565         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6566                    (long long unsigned int) cookie);
6567         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6568             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) {
6569                 nlmsg_free(msg);
6570                 return;
6571         }
6572
6573         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6574         if (ret)
6575                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6576                            "(%s)", ret, strerror(-ret));
6577 }
6578
6579
6580 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6581 {
6582         struct i802_bss *bss = priv;
6583         struct wpa_driver_nl80211_data *drv = bss->drv;
6584         unsigned int i;
6585         u64 cookie;
6586
6587         /* Cancel the last pending TX cookie */
6588         nl80211_frame_wait_cancel(bss, drv->send_action_cookie);
6589
6590         /*
6591          * Cancel the other pending TX cookies, if any. This is needed since
6592          * the driver may keep a list of all pending offchannel TX operations
6593          * and free up the radio only once they have expired or cancelled.
6594          */
6595         for (i = drv->num_send_action_cookies; i > 0; i--) {
6596                 cookie = drv->send_action_cookies[i - 1];
6597                 if (cookie != drv->send_action_cookie)
6598                         nl80211_frame_wait_cancel(bss, cookie);
6599         }
6600         drv->num_send_action_cookies = 0;
6601 }
6602
6603
6604 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6605                                                 unsigned int duration)
6606 {
6607         struct i802_bss *bss = priv;
6608         struct wpa_driver_nl80211_data *drv = bss->drv;
6609         struct nl_msg *msg;
6610         int ret;
6611         u64 cookie;
6612
6613         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6614             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6615             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6616                 nlmsg_free(msg);
6617                 return -1;
6618         }
6619
6620         cookie = 0;
6621         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6622         if (ret == 0) {
6623                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6624                            "0x%llx for freq=%u MHz duration=%u",
6625                            (long long unsigned int) cookie, freq, duration);
6626                 drv->remain_on_chan_cookie = cookie;
6627                 drv->pending_remain_on_chan = 1;
6628                 return 0;
6629         }
6630         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6631                    "(freq=%d duration=%u): %d (%s)",
6632                    freq, duration, ret, strerror(-ret));
6633         return -1;
6634 }
6635
6636
6637 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6638 {
6639         struct i802_bss *bss = priv;
6640         struct wpa_driver_nl80211_data *drv = bss->drv;
6641         struct nl_msg *msg;
6642         int ret;
6643
6644         if (!drv->pending_remain_on_chan) {
6645                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6646                            "to cancel");
6647                 return -1;
6648         }
6649
6650         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6651                    "0x%llx",
6652                    (long long unsigned int) drv->remain_on_chan_cookie);
6653
6654         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6655         if (!msg ||
6656             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6657                 nlmsg_free(msg);
6658                 return -1;
6659         }
6660
6661         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6662         if (ret == 0)
6663                 return 0;
6664         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6665                    "%d (%s)", ret, strerror(-ret));
6666         return -1;
6667 }
6668
6669
6670 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6671 {
6672         struct wpa_driver_nl80211_data *drv = bss->drv;
6673
6674         if (!report) {
6675                 if (bss->nl_preq && drv->device_ap_sme &&
6676                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6677                     !bss->static_ap) {
6678                         /*
6679                          * Do not disable Probe Request reporting that was
6680                          * enabled in nl80211_setup_ap().
6681                          */
6682                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6683                                    "Probe Request reporting nl_preq=%p while "
6684                                    "in AP mode", bss->nl_preq);
6685                 } else if (bss->nl_preq) {
6686                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6687                                    "reporting nl_preq=%p", bss->nl_preq);
6688                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6689                 }
6690                 return 0;
6691         }
6692
6693         if (bss->nl_preq) {
6694                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6695                            "already on! nl_preq=%p", bss->nl_preq);
6696                 return 0;
6697         }
6698
6699         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6700         if (bss->nl_preq == NULL)
6701                 return -1;
6702         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6703                    "reporting nl_preq=%p", bss->nl_preq);
6704
6705         if (nl80211_register_frame(bss, bss->nl_preq,
6706                                    (WLAN_FC_TYPE_MGMT << 2) |
6707                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6708                                    NULL, 0) < 0)
6709                 goto out_err;
6710
6711         nl80211_register_eloop_read(&bss->nl_preq,
6712                                     wpa_driver_nl80211_event_receive,
6713                                     bss->nl_cb);
6714
6715         return 0;
6716
6717  out_err:
6718         nl_destroy_handles(&bss->nl_preq);
6719         return -1;
6720 }
6721
6722
6723 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6724                                      int ifindex, int disabled)
6725 {
6726         struct nl_msg *msg;
6727         struct nlattr *bands, *band;
6728         int ret;
6729
6730         wpa_printf(MSG_DEBUG,
6731                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6732                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6733                    "no NL80211_TXRATE_LEGACY constraint");
6734
6735         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6736                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6737         if (!msg)
6738                 return -1;
6739
6740         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6741         if (!bands)
6742                 goto fail;
6743
6744         /*
6745          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6746          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6747          * rates. All 5 GHz rates are left enabled.
6748          */
6749         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6750         if (!band ||
6751             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6752                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6753                 goto fail;
6754         nla_nest_end(msg, band);
6755
6756         nla_nest_end(msg, bands);
6757
6758         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6759         if (ret) {
6760                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6761                            "(%s)", ret, strerror(-ret));
6762         } else
6763                 drv->disabled_11b_rates = disabled;
6764
6765         return ret;
6766
6767 fail:
6768         nlmsg_free(msg);
6769         return -1;
6770 }
6771
6772
6773 static int wpa_driver_nl80211_deinit_ap(void *priv)
6774 {
6775         struct i802_bss *bss = priv;
6776         struct wpa_driver_nl80211_data *drv = bss->drv;
6777         if (!is_ap_interface(drv->nlmode))
6778                 return -1;
6779         wpa_driver_nl80211_del_beacon(drv);
6780         bss->beacon_set = 0;
6781
6782         /*
6783          * If the P2P GO interface was dynamically added, then it is
6784          * possible that the interface change to station is not possible.
6785          */
6786         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6787                 return 0;
6788
6789         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6790 }
6791
6792
6793 static int wpa_driver_nl80211_stop_ap(void *priv)
6794 {
6795         struct i802_bss *bss = priv;
6796         struct wpa_driver_nl80211_data *drv = bss->drv;
6797         if (!is_ap_interface(drv->nlmode))
6798                 return -1;
6799         wpa_driver_nl80211_del_beacon(drv);
6800         bss->beacon_set = 0;
6801         return 0;
6802 }
6803
6804
6805 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6806 {
6807         struct i802_bss *bss = priv;
6808         struct wpa_driver_nl80211_data *drv = bss->drv;
6809         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6810                 return -1;
6811
6812         /*
6813          * If the P2P Client interface was dynamically added, then it is
6814          * possible that the interface change to station is not possible.
6815          */
6816         if (bss->if_dynamic)
6817                 return 0;
6818
6819         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6820 }
6821
6822
6823 static void wpa_driver_nl80211_resume(void *priv)
6824 {
6825         struct i802_bss *bss = priv;
6826         enum nl80211_iftype nlmode = nl80211_get_ifmode(bss);
6827
6828         if (i802_set_iface_flags(bss, 1))
6829                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6830
6831         if (is_p2p_net_interface(nlmode))
6832                 nl80211_disable_11b_rates(bss->drv, bss->drv->ifindex, 1);
6833 }
6834
6835
6836 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6837 {
6838         struct i802_bss *bss = priv;
6839         struct wpa_driver_nl80211_data *drv = bss->drv;
6840         struct nl_msg *msg;
6841         struct nlattr *cqm;
6842
6843         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6844                    "hysteresis=%d", threshold, hysteresis);
6845
6846         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6847             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6848             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6849             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6850                 nlmsg_free(msg);
6851                 return -1;
6852         }
6853         nla_nest_end(msg, cqm);
6854
6855         return send_and_recv_msgs(drv, msg, NULL, NULL);
6856 }
6857
6858
6859 static int get_channel_width(struct nl_msg *msg, void *arg)
6860 {
6861         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6862         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6863         struct wpa_signal_info *sig_change = arg;
6864
6865         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6866                   genlmsg_attrlen(gnlh, 0), NULL);
6867
6868         sig_change->center_frq1 = -1;
6869         sig_change->center_frq2 = -1;
6870         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6871
6872         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6873                 sig_change->chanwidth = convert2width(
6874                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6875                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6876                         sig_change->center_frq1 =
6877                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6878                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6879                         sig_change->center_frq2 =
6880                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6881         }
6882
6883         return NL_SKIP;
6884 }
6885
6886
6887 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6888                                      struct wpa_signal_info *sig)
6889 {
6890         struct nl_msg *msg;
6891
6892         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6893         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6894 }
6895
6896
6897 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6898 {
6899         struct i802_bss *bss = priv;
6900         struct wpa_driver_nl80211_data *drv = bss->drv;
6901         int res;
6902
6903         os_memset(si, 0, sizeof(*si));
6904         res = nl80211_get_link_signal(drv, si);
6905         if (res) {
6906                 if (drv->nlmode != NL80211_IFTYPE_ADHOC &&
6907                     drv->nlmode != NL80211_IFTYPE_MESH_POINT)
6908                         return res;
6909                 si->current_signal = 0;
6910         }
6911
6912         res = nl80211_get_channel_width(drv, si);
6913         if (res != 0)
6914                 return res;
6915
6916         return nl80211_get_link_noise(drv, si);
6917 }
6918
6919
6920 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6921                               int encrypt)
6922 {
6923         struct i802_bss *bss = priv;
6924         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6925                                              0, 0, 0, 0, NULL, 0);
6926 }
6927
6928
6929 static int nl80211_set_param(void *priv, const char *param)
6930 {
6931         if (param == NULL)
6932                 return 0;
6933         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6934
6935 #ifdef CONFIG_P2P
6936         if (os_strstr(param, "use_p2p_group_interface=1")) {
6937                 struct i802_bss *bss = priv;
6938                 struct wpa_driver_nl80211_data *drv = bss->drv;
6939
6940                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6941                            "interface");
6942                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6943                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6944         }
6945 #endif /* CONFIG_P2P */
6946
6947         if (os_strstr(param, "use_monitor=1")) {
6948                 struct i802_bss *bss = priv;
6949                 struct wpa_driver_nl80211_data *drv = bss->drv;
6950                 drv->use_monitor = 1;
6951         }
6952
6953         if (os_strstr(param, "force_connect_cmd=1")) {
6954                 struct i802_bss *bss = priv;
6955                 struct wpa_driver_nl80211_data *drv = bss->drv;
6956                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6957                 drv->force_connect_cmd = 1;
6958         }
6959
6960         if (os_strstr(param, "no_offchannel_tx=1")) {
6961                 struct i802_bss *bss = priv;
6962                 struct wpa_driver_nl80211_data *drv = bss->drv;
6963                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6964                 drv->test_use_roc_tx = 1;
6965         }
6966
6967         return 0;
6968 }
6969
6970
6971 static void * nl80211_global_init(void *ctx)
6972 {
6973         struct nl80211_global *global;
6974         struct netlink_config *cfg;
6975
6976         global = os_zalloc(sizeof(*global));
6977         if (global == NULL)
6978                 return NULL;
6979         global->ctx = ctx;
6980         global->ioctl_sock = -1;
6981         dl_list_init(&global->interfaces);
6982         global->if_add_ifindex = -1;
6983
6984         cfg = os_zalloc(sizeof(*cfg));
6985         if (cfg == NULL)
6986                 goto err;
6987
6988         cfg->ctx = global;
6989         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6990         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6991         global->netlink = netlink_init(cfg);
6992         if (global->netlink == NULL) {
6993                 os_free(cfg);
6994                 goto err;
6995         }
6996
6997         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6998                 goto err;
6999
7000         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
7001         if (global->ioctl_sock < 0) {
7002                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
7003                            strerror(errno));
7004                 goto err;
7005         }
7006
7007         return global;
7008
7009 err:
7010         nl80211_global_deinit(global);
7011         return NULL;
7012 }
7013
7014
7015 static void nl80211_global_deinit(void *priv)
7016 {
7017         struct nl80211_global *global = priv;
7018         if (global == NULL)
7019                 return;
7020         if (!dl_list_empty(&global->interfaces)) {
7021                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
7022                            "nl80211_global_deinit",
7023                            dl_list_len(&global->interfaces));
7024         }
7025
7026         if (global->netlink)
7027                 netlink_deinit(global->netlink);
7028
7029         nl_destroy_handles(&global->nl);
7030
7031         if (global->nl_event)
7032                 nl80211_destroy_eloop_handle(&global->nl_event);
7033
7034         nl_cb_put(global->nl_cb);
7035
7036         if (global->ioctl_sock >= 0)
7037                 close(global->ioctl_sock);
7038
7039         os_free(global);
7040 }
7041
7042
7043 static const char * nl80211_get_radio_name(void *priv)
7044 {
7045         struct i802_bss *bss = priv;
7046         struct wpa_driver_nl80211_data *drv = bss->drv;
7047         return drv->phyname;
7048 }
7049
7050
7051 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
7052                          const u8 *pmkid)
7053 {
7054         struct nl_msg *msg;
7055
7056         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
7057             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
7058             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
7059                 nlmsg_free(msg);
7060                 return -ENOBUFS;
7061         }
7062
7063         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7064 }
7065
7066
7067 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7068 {
7069         struct i802_bss *bss = priv;
7070         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
7071         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
7072 }
7073
7074
7075 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
7076 {
7077         struct i802_bss *bss = priv;
7078         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
7079                    MAC2STR(bssid));
7080         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
7081 }
7082
7083
7084 static int nl80211_flush_pmkid(void *priv)
7085 {
7086         struct i802_bss *bss = priv;
7087         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
7088         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
7089 }
7090
7091
7092 static void clean_survey_results(struct survey_results *survey_results)
7093 {
7094         struct freq_survey *survey, *tmp;
7095
7096         if (dl_list_empty(&survey_results->survey_list))
7097                 return;
7098
7099         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
7100                               struct freq_survey, list) {
7101                 dl_list_del(&survey->list);
7102                 os_free(survey);
7103         }
7104 }
7105
7106
7107 static void add_survey(struct nlattr **sinfo, u32 ifidx,
7108                        struct dl_list *survey_list)
7109 {
7110         struct freq_survey *survey;
7111
7112         survey = os_zalloc(sizeof(struct freq_survey));
7113         if  (!survey)
7114                 return;
7115
7116         survey->ifidx = ifidx;
7117         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7118         survey->filled = 0;
7119
7120         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
7121                 survey->nf = (int8_t)
7122                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
7123                 survey->filled |= SURVEY_HAS_NF;
7124         }
7125
7126         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
7127                 survey->channel_time =
7128                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
7129                 survey->filled |= SURVEY_HAS_CHAN_TIME;
7130         }
7131
7132         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
7133                 survey->channel_time_busy =
7134                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
7135                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
7136         }
7137
7138         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
7139                 survey->channel_time_rx =
7140                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
7141                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
7142         }
7143
7144         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
7145                 survey->channel_time_tx =
7146                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
7147                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
7148         }
7149
7150         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)",
7151                    survey->freq,
7152                    survey->nf,
7153                    (unsigned long int) survey->channel_time,
7154                    (unsigned long int) survey->channel_time_busy,
7155                    (unsigned long int) survey->channel_time_tx,
7156                    (unsigned long int) survey->channel_time_rx,
7157                    survey->filled);
7158
7159         dl_list_add_tail(survey_list, &survey->list);
7160 }
7161
7162
7163 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
7164                            unsigned int freq_filter)
7165 {
7166         if (!freq_filter)
7167                 return 1;
7168
7169         return freq_filter == surveyed_freq;
7170 }
7171
7172
7173 static int survey_handler(struct nl_msg *msg, void *arg)
7174 {
7175         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7176         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7177         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
7178         struct survey_results *survey_results;
7179         u32 surveyed_freq = 0;
7180         u32 ifidx;
7181
7182         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
7183                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
7184                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
7185         };
7186
7187         survey_results = (struct survey_results *) arg;
7188
7189         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7190                   genlmsg_attrlen(gnlh, 0), NULL);
7191
7192         if (!tb[NL80211_ATTR_IFINDEX])
7193                 return NL_SKIP;
7194
7195         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
7196
7197         if (!tb[NL80211_ATTR_SURVEY_INFO])
7198                 return NL_SKIP;
7199
7200         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
7201                              tb[NL80211_ATTR_SURVEY_INFO],
7202                              survey_policy))
7203                 return NL_SKIP;
7204
7205         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
7206                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
7207                 return NL_SKIP;
7208         }
7209
7210         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
7211
7212         if (!check_survey_ok(sinfo, surveyed_freq,
7213                              survey_results->freq_filter))
7214                 return NL_SKIP;
7215
7216         if (survey_results->freq_filter &&
7217             survey_results->freq_filter != surveyed_freq) {
7218                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
7219                            surveyed_freq);
7220                 return NL_SKIP;
7221         }
7222
7223         add_survey(sinfo, ifidx, &survey_results->survey_list);
7224
7225         return NL_SKIP;
7226 }
7227
7228
7229 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
7230 {
7231         struct i802_bss *bss = priv;
7232         struct wpa_driver_nl80211_data *drv = bss->drv;
7233         struct nl_msg *msg;
7234         int err;
7235         union wpa_event_data data;
7236         struct survey_results *survey_results;
7237
7238         os_memset(&data, 0, sizeof(data));
7239         survey_results = &data.survey_results;
7240
7241         dl_list_init(&survey_results->survey_list);
7242
7243         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
7244         if (!msg)
7245                 return -ENOBUFS;
7246
7247         if (freq)
7248                 data.survey_results.freq_filter = freq;
7249
7250         do {
7251                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
7252                 err = send_and_recv_msgs(drv, msg, survey_handler,
7253                                          survey_results);
7254         } while (err > 0);
7255
7256         if (err)
7257                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
7258         else
7259                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
7260
7261         clean_survey_results(survey_results);
7262         return err;
7263 }
7264
7265
7266 static void nl80211_set_rekey_info(void *priv, const u8 *kek, size_t kek_len,
7267                                    const u8 *kck, size_t kck_len,
7268                                    const u8 *replay_ctr)
7269 {
7270         struct i802_bss *bss = priv;
7271         struct wpa_driver_nl80211_data *drv = bss->drv;
7272         struct nlattr *replay_nested;
7273         struct nl_msg *msg;
7274         int ret;
7275
7276         if (!drv->set_rekey_offload)
7277                 return;
7278
7279         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
7280         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
7281             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
7282             nla_put(msg, NL80211_REKEY_DATA_KEK, kek_len, kek) ||
7283             nla_put(msg, NL80211_REKEY_DATA_KCK, kck_len, kck) ||
7284             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
7285                     replay_ctr)) {
7286                 nl80211_nlmsg_clear(msg);
7287                 nlmsg_free(msg);
7288                 return;
7289         }
7290
7291         nla_nest_end(msg, replay_nested);
7292
7293         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
7294         if (ret == -EOPNOTSUPP) {
7295                 wpa_printf(MSG_DEBUG,
7296                            "nl80211: Driver does not support rekey offload");
7297                 drv->set_rekey_offload = 0;
7298         }
7299 }
7300
7301
7302 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
7303                                     const u8 *addr, int qos)
7304 {
7305         /* send data frame to poll STA and check whether
7306          * this frame is ACKed */
7307         struct {
7308                 struct ieee80211_hdr hdr;
7309                 u16 qos_ctl;
7310         } STRUCT_PACKED nulldata;
7311         size_t size;
7312
7313         /* Send data frame to poll STA and check whether this frame is ACKed */
7314
7315         os_memset(&nulldata, 0, sizeof(nulldata));
7316
7317         if (qos) {
7318                 nulldata.hdr.frame_control =
7319                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7320                                      WLAN_FC_STYPE_QOS_NULL);
7321                 size = sizeof(nulldata);
7322         } else {
7323                 nulldata.hdr.frame_control =
7324                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
7325                                      WLAN_FC_STYPE_NULLFUNC);
7326                 size = sizeof(struct ieee80211_hdr);
7327         }
7328
7329         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
7330         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
7331         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
7332         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
7333
7334         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
7335                                          0, 0, NULL, 0) < 0)
7336                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
7337                            "send poll frame");
7338 }
7339
7340 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
7341                                 int qos)
7342 {
7343         struct i802_bss *bss = priv;
7344         struct wpa_driver_nl80211_data *drv = bss->drv;
7345         struct nl_msg *msg;
7346         int ret;
7347
7348         if (!drv->poll_command_supported) {
7349                 nl80211_send_null_frame(bss, own_addr, addr, qos);
7350                 return;
7351         }
7352
7353         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
7354             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7355                 nlmsg_free(msg);
7356                 return;
7357         }
7358
7359         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7360         if (ret < 0) {
7361                 wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
7362                            MACSTR " failed: ret=%d (%s)",
7363                            MAC2STR(addr), ret, strerror(-ret));
7364         }
7365 }
7366
7367
7368 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
7369 {
7370         struct nl_msg *msg;
7371
7372         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
7373             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
7374                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
7375                 nlmsg_free(msg);
7376                 return -ENOBUFS;
7377         }
7378         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
7379 }
7380
7381
7382 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
7383                                      int ctwindow)
7384 {
7385         struct i802_bss *bss = priv;
7386
7387         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
7388                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
7389
7390         if (opp_ps != -1 || ctwindow != -1) {
7391 #ifdef ANDROID_P2P
7392                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
7393 #else /* ANDROID_P2P */
7394                 return -1; /* Not yet supported */
7395 #endif /* ANDROID_P2P */
7396         }
7397
7398         if (legacy_ps == -1)
7399                 return 0;
7400         if (legacy_ps != 0 && legacy_ps != 1)
7401                 return -1; /* Not yet supported */
7402
7403         return nl80211_set_power_save(bss, legacy_ps);
7404 }
7405
7406
7407 static int nl80211_start_radar_detection(void *priv,
7408                                          struct hostapd_freq_params *freq)
7409 {
7410         struct i802_bss *bss = priv;
7411         struct wpa_driver_nl80211_data *drv = bss->drv;
7412         struct nl_msg *msg;
7413         int ret;
7414
7415         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)",
7416                    freq->freq, freq->ht_enabled, freq->vht_enabled,
7417                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
7418
7419         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
7420                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
7421                            "detection");
7422                 return -1;
7423         }
7424
7425         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
7426             nl80211_put_freq_params(msg, freq) < 0) {
7427                 nlmsg_free(msg);
7428                 return -1;
7429         }
7430
7431         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7432         if (ret == 0)
7433                 return 0;
7434         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
7435                    "%d (%s)", ret, strerror(-ret));
7436         return -1;
7437 }
7438
7439 #ifdef CONFIG_TDLS
7440
7441 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
7442                                   u8 dialog_token, u16 status_code,
7443                                   u32 peer_capab, int initiator, const u8 *buf,
7444                                   size_t len)
7445 {
7446         struct i802_bss *bss = priv;
7447         struct wpa_driver_nl80211_data *drv = bss->drv;
7448         struct nl_msg *msg;
7449
7450         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7451                 return -EOPNOTSUPP;
7452
7453         if (!dst)
7454                 return -EINVAL;
7455
7456         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
7457             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7458             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
7459             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
7460             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
7461                 goto fail;
7462         if (peer_capab) {
7463                 /*
7464                  * The internal enum tdls_peer_capability definition is
7465                  * currently identical with the nl80211 enum
7466                  * nl80211_tdls_peer_capability, so no conversion is needed
7467                  * here.
7468                  */
7469                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
7470                                 peer_capab))
7471                         goto fail;
7472         }
7473         if ((initiator &&
7474              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
7475             nla_put(msg, NL80211_ATTR_IE, len, buf))
7476                 goto fail;
7477
7478         return send_and_recv_msgs(drv, msg, NULL, NULL);
7479
7480 fail:
7481         nlmsg_free(msg);
7482         return -ENOBUFS;
7483 }
7484
7485
7486 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
7487 {
7488         struct i802_bss *bss = priv;
7489         struct wpa_driver_nl80211_data *drv = bss->drv;
7490         struct nl_msg *msg;
7491         enum nl80211_tdls_operation nl80211_oper;
7492
7493         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
7494                 return -EOPNOTSUPP;
7495
7496         switch (oper) {
7497         case TDLS_DISCOVERY_REQ:
7498                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
7499                 break;
7500         case TDLS_SETUP:
7501                 nl80211_oper = NL80211_TDLS_SETUP;
7502                 break;
7503         case TDLS_TEARDOWN:
7504                 nl80211_oper = NL80211_TDLS_TEARDOWN;
7505                 break;
7506         case TDLS_ENABLE_LINK:
7507                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
7508                 break;
7509         case TDLS_DISABLE_LINK:
7510                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
7511                 break;
7512         case TDLS_ENABLE:
7513                 return 0;
7514         case TDLS_DISABLE:
7515                 return 0;
7516         default:
7517                 return -EINVAL;
7518         }
7519
7520         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
7521             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
7522             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
7523                 nlmsg_free(msg);
7524                 return -ENOBUFS;
7525         }
7526
7527         return send_and_recv_msgs(drv, msg, NULL, NULL);
7528 }
7529
7530
7531 static int
7532 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7533                                    const struct hostapd_freq_params *params)
7534 {
7535         struct i802_bss *bss = priv;
7536         struct wpa_driver_nl80211_data *drv = bss->drv;
7537         struct nl_msg *msg;
7538         int ret = -ENOBUFS;
7539
7540         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7541             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7542                 return -EOPNOTSUPP;
7543
7544         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7545                    " oper_class=%u freq=%u",
7546                    MAC2STR(addr), oper_class, params->freq);
7547         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7548         if (!msg ||
7549             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7550             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7551             (ret = nl80211_put_freq_params(msg, params))) {
7552                 nlmsg_free(msg);
7553                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7554                 return ret;
7555         }
7556
7557         return send_and_recv_msgs(drv, msg, NULL, NULL);
7558 }
7559
7560
7561 static int
7562 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7563 {
7564         struct i802_bss *bss = priv;
7565         struct wpa_driver_nl80211_data *drv = bss->drv;
7566         struct nl_msg *msg;
7567
7568         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7569             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7570                 return -EOPNOTSUPP;
7571
7572         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7573                    MAC2STR(addr));
7574         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7575         if (!msg ||
7576             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7577                 nlmsg_free(msg);
7578                 wpa_printf(MSG_DEBUG,
7579                            "nl80211: Could not build TDLS cancel chan switch");
7580                 return -ENOBUFS;
7581         }
7582
7583         return send_and_recv_msgs(drv, msg, NULL, NULL);
7584 }
7585
7586 #endif /* CONFIG TDLS */
7587
7588
7589 static int driver_nl80211_set_key(const char *ifname, void *priv,
7590                                   enum wpa_alg alg, const u8 *addr,
7591                                   int key_idx, int set_tx,
7592                                   const u8 *seq, size_t seq_len,
7593                                   const u8 *key, size_t key_len)
7594 {
7595         struct i802_bss *bss = priv;
7596         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7597                                           set_tx, seq, seq_len, key, key_len);
7598 }
7599
7600
7601 static int driver_nl80211_scan2(void *priv,
7602                                 struct wpa_driver_scan_params *params)
7603 {
7604         struct i802_bss *bss = priv;
7605 #ifdef CONFIG_DRIVER_NL80211_QCA
7606         struct wpa_driver_nl80211_data *drv = bss->drv;
7607
7608         /*
7609          * Do a vendor specific scan if possible. If only_new_results is
7610          * set, do a normal scan since a kernel (cfg80211) BSS cache flush
7611          * cannot be achieved through a vendor scan. The below condition may
7612          * need to be modified if new scan flags are added in the future whose
7613          * functionality can only be achieved through a normal scan.
7614          */
7615         if (drv->scan_vendor_cmd_avail && !params->only_new_results)
7616                 return wpa_driver_nl80211_vendor_scan(bss, params);
7617 #endif /* CONFIG_DRIVER_NL80211_QCA */
7618         return wpa_driver_nl80211_scan(bss, params);
7619 }
7620
7621
7622 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7623                                          int reason_code)
7624 {
7625         struct i802_bss *bss = priv;
7626         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7627 }
7628
7629
7630 static int driver_nl80211_authenticate(void *priv,
7631                                        struct wpa_driver_auth_params *params)
7632 {
7633         struct i802_bss *bss = priv;
7634         return wpa_driver_nl80211_authenticate(bss, params);
7635 }
7636
7637
7638 static void driver_nl80211_deinit(void *priv)
7639 {
7640         struct i802_bss *bss = priv;
7641         wpa_driver_nl80211_deinit(bss);
7642 }
7643
7644
7645 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7646                                     const char *ifname)
7647 {
7648         struct i802_bss *bss = priv;
7649         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7650 }
7651
7652
7653 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7654                                     size_t data_len, int noack,
7655                                     unsigned int freq,
7656                                     const u16 *csa_offs, size_t csa_offs_len)
7657 {
7658         struct i802_bss *bss = priv;
7659         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7660                                             freq, 0, 0, 0, csa_offs,
7661                                             csa_offs_len);
7662 }
7663
7664
7665 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7666 {
7667         struct i802_bss *bss = priv;
7668         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7669 }
7670
7671
7672 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7673                                        const char *ifname, int vlan_id)
7674 {
7675         struct i802_bss *bss = priv;
7676         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7677 }
7678
7679
7680 static int driver_nl80211_read_sta_data(void *priv,
7681                                         struct hostap_sta_driver_data *data,
7682                                         const u8 *addr)
7683 {
7684         struct i802_bss *bss = priv;
7685         return i802_read_sta_data(bss, data, addr);
7686 }
7687
7688
7689 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7690                                       unsigned int wait_time,
7691                                       const u8 *dst, const u8 *src,
7692                                       const u8 *bssid,
7693                                       const u8 *data, size_t data_len,
7694                                       int no_cck)
7695 {
7696         struct i802_bss *bss = priv;
7697         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7698                                               bssid, data, data_len, no_cck);
7699 }
7700
7701
7702 static int driver_nl80211_probe_req_report(void *priv, int report)
7703 {
7704         struct i802_bss *bss = priv;
7705         return wpa_driver_nl80211_probe_req_report(bss, report);
7706 }
7707
7708
7709 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7710                                             const u8 *ies, size_t ies_len)
7711 {
7712         int ret;
7713         struct nl_msg *msg;
7714         struct i802_bss *bss = priv;
7715         struct wpa_driver_nl80211_data *drv = bss->drv;
7716         u16 mdid = WPA_GET_LE16(md);
7717
7718         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7719         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7720             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7721             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7722                 nlmsg_free(msg);
7723                 return -ENOBUFS;
7724         }
7725
7726         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7727         if (ret) {
7728                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7729                            "err=%d (%s)", ret, strerror(-ret));
7730         }
7731
7732         return ret;
7733 }
7734
7735
7736 static const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7737 {
7738         struct i802_bss *bss = priv;
7739         struct wpa_driver_nl80211_data *drv = bss->drv;
7740
7741         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7742                 return NULL;
7743
7744         return bss->addr;
7745 }
7746
7747
7748 static const char * scan_state_str(enum scan_states scan_state)
7749 {
7750         switch (scan_state) {
7751         case NO_SCAN:
7752                 return "NO_SCAN";
7753         case SCAN_REQUESTED:
7754                 return "SCAN_REQUESTED";
7755         case SCAN_STARTED:
7756                 return "SCAN_STARTED";
7757         case SCAN_COMPLETED:
7758                 return "SCAN_COMPLETED";
7759         case SCAN_ABORTED:
7760                 return "SCAN_ABORTED";
7761         case SCHED_SCAN_STARTED:
7762                 return "SCHED_SCAN_STARTED";
7763         case SCHED_SCAN_STOPPED:
7764                 return "SCHED_SCAN_STOPPED";
7765         case SCHED_SCAN_RESULTS:
7766                 return "SCHED_SCAN_RESULTS";
7767         }
7768
7769         return "??";
7770 }
7771
7772
7773 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7774 {
7775         struct i802_bss *bss = priv;
7776         struct wpa_driver_nl80211_data *drv = bss->drv;
7777         int res;
7778         char *pos, *end;
7779
7780         pos = buf;
7781         end = buf + buflen;
7782
7783         res = os_snprintf(pos, end - pos,
7784                           "ifindex=%d\n"
7785                           "ifname=%s\n"
7786                           "brname=%s\n"
7787                           "addr=" MACSTR "\n"
7788                           "freq=%d\n"
7789                           "%s%s%s%s%s",
7790                           bss->ifindex,
7791                           bss->ifname,
7792                           bss->brname,
7793                           MAC2STR(bss->addr),
7794                           bss->freq,
7795                           bss->beacon_set ? "beacon_set=1\n" : "",
7796                           bss->added_if_into_bridge ?
7797                           "added_if_into_bridge=1\n" : "",
7798                           bss->added_bridge ? "added_bridge=1\n" : "",
7799                           bss->in_deinit ? "in_deinit=1\n" : "",
7800                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7801         if (os_snprintf_error(end - pos, res))
7802                 return pos - buf;
7803         pos += res;
7804
7805         if (bss->wdev_id_set) {
7806                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7807                                   (unsigned long long) bss->wdev_id);
7808                 if (os_snprintf_error(end - pos, res))
7809                         return pos - buf;
7810                 pos += res;
7811         }
7812
7813         res = os_snprintf(pos, end - pos,
7814                           "phyname=%s\n"
7815                           "perm_addr=" MACSTR "\n"
7816                           "drv_ifindex=%d\n"
7817                           "operstate=%d\n"
7818                           "scan_state=%s\n"
7819                           "auth_bssid=" MACSTR "\n"
7820                           "auth_attempt_bssid=" MACSTR "\n"
7821                           "bssid=" MACSTR "\n"
7822                           "prev_bssid=" MACSTR "\n"
7823                           "associated=%d\n"
7824                           "assoc_freq=%u\n"
7825                           "monitor_sock=%d\n"
7826                           "monitor_ifidx=%d\n"
7827                           "monitor_refcount=%d\n"
7828                           "last_mgmt_freq=%u\n"
7829                           "eapol_tx_sock=%d\n"
7830                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7831                           drv->phyname,
7832                           MAC2STR(drv->perm_addr),
7833                           drv->ifindex,
7834                           drv->operstate,
7835                           scan_state_str(drv->scan_state),
7836                           MAC2STR(drv->auth_bssid),
7837                           MAC2STR(drv->auth_attempt_bssid),
7838                           MAC2STR(drv->bssid),
7839                           MAC2STR(drv->prev_bssid),
7840                           drv->associated,
7841                           drv->assoc_freq,
7842                           drv->monitor_sock,
7843                           drv->monitor_ifidx,
7844                           drv->monitor_refcount,
7845                           drv->last_mgmt_freq,
7846                           drv->eapol_tx_sock,
7847                           drv->ignore_if_down_event ?
7848                           "ignore_if_down_event=1\n" : "",
7849                           drv->scan_complete_events ?
7850                           "scan_complete_events=1\n" : "",
7851                           drv->disabled_11b_rates ?
7852                           "disabled_11b_rates=1\n" : "",
7853                           drv->pending_remain_on_chan ?
7854                           "pending_remain_on_chan=1\n" : "",
7855                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7856                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7857                           drv->poll_command_supported ?
7858                           "poll_command_supported=1\n" : "",
7859                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7860                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7861                           drv->retry_auth ? "retry_auth=1\n" : "",
7862                           drv->use_monitor ? "use_monitor=1\n" : "",
7863                           drv->ignore_next_local_disconnect ?
7864                           "ignore_next_local_disconnect=1\n" : "",
7865                           drv->ignore_next_local_deauth ?
7866                           "ignore_next_local_deauth=1\n" : "");
7867         if (os_snprintf_error(end - pos, res))
7868                 return pos - buf;
7869         pos += res;
7870
7871         if (drv->has_capability) {
7872                 res = os_snprintf(pos, end - pos,
7873                                   "capa.key_mgmt=0x%x\n"
7874                                   "capa.enc=0x%x\n"
7875                                   "capa.auth=0x%x\n"
7876                                   "capa.flags=0x%llx\n"
7877                                   "capa.rrm_flags=0x%x\n"
7878                                   "capa.max_scan_ssids=%d\n"
7879                                   "capa.max_sched_scan_ssids=%d\n"
7880                                   "capa.sched_scan_supported=%d\n"
7881                                   "capa.max_match_sets=%d\n"
7882                                   "capa.max_remain_on_chan=%u\n"
7883                                   "capa.max_stations=%u\n"
7884                                   "capa.probe_resp_offloads=0x%x\n"
7885                                   "capa.max_acl_mac_addrs=%u\n"
7886                                   "capa.num_multichan_concurrent=%u\n"
7887                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7888                                   "capa.mac_addr_rand_scan_supported=%d\n"
7889                                   "capa.conc_capab=%u\n"
7890                                   "capa.max_conc_chan_2_4=%u\n"
7891                                   "capa.max_conc_chan_5_0=%u\n"
7892                                   "capa.max_sched_scan_plans=%u\n"
7893                                   "capa.max_sched_scan_plan_interval=%u\n"
7894                                   "capa.max_sched_scan_plan_iterations=%u\n",
7895                                   drv->capa.key_mgmt,
7896                                   drv->capa.enc,
7897                                   drv->capa.auth,
7898                                   (unsigned long long) drv->capa.flags,
7899                                   drv->capa.rrm_flags,
7900                                   drv->capa.max_scan_ssids,
7901                                   drv->capa.max_sched_scan_ssids,
7902                                   drv->capa.sched_scan_supported,
7903                                   drv->capa.max_match_sets,
7904                                   drv->capa.max_remain_on_chan,
7905                                   drv->capa.max_stations,
7906                                   drv->capa.probe_resp_offloads,
7907                                   drv->capa.max_acl_mac_addrs,
7908                                   drv->capa.num_multichan_concurrent,
7909                                   drv->capa.mac_addr_rand_sched_scan_supported,
7910                                   drv->capa.mac_addr_rand_scan_supported,
7911                                   drv->capa.conc_capab,
7912                                   drv->capa.max_conc_chan_2_4,
7913                                   drv->capa.max_conc_chan_5_0,
7914                                   drv->capa.max_sched_scan_plans,
7915                                   drv->capa.max_sched_scan_plan_interval,
7916                                   drv->capa.max_sched_scan_plan_iterations);
7917                 if (os_snprintf_error(end - pos, res))
7918                         return pos - buf;
7919                 pos += res;
7920         }
7921
7922         return pos - buf;
7923 }
7924
7925
7926 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7927 {
7928         if ((settings->head &&
7929              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7930                      settings->head_len, settings->head)) ||
7931             (settings->tail &&
7932              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7933                      settings->tail_len, settings->tail)) ||
7934             (settings->beacon_ies &&
7935              nla_put(msg, NL80211_ATTR_IE,
7936                      settings->beacon_ies_len, settings->beacon_ies)) ||
7937             (settings->proberesp_ies &&
7938              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7939                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7940             (settings->assocresp_ies &&
7941              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7942                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7943             (settings->probe_resp &&
7944              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7945                      settings->probe_resp_len, settings->probe_resp)))
7946                 return -ENOBUFS;
7947
7948         return 0;
7949 }
7950
7951
7952 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7953 {
7954         struct nl_msg *msg;
7955         struct i802_bss *bss = priv;
7956         struct wpa_driver_nl80211_data *drv = bss->drv;
7957         struct nlattr *beacon_csa;
7958         int ret = -ENOBUFS;
7959         int csa_off_len = 0;
7960         int i;
7961
7962         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7963                    settings->cs_count, settings->block_tx,
7964                    settings->freq_params.freq, settings->freq_params.bandwidth,
7965                    settings->freq_params.center_freq1,
7966                    settings->freq_params.center_freq2);
7967
7968         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7969                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7970                 return -EOPNOTSUPP;
7971         }
7972
7973         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7974             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7975                 return -EOPNOTSUPP;
7976
7977         /*
7978          * Remove empty counters, assuming Probe Response and Beacon frame
7979          * counters match. This implementation assumes that there are only two
7980          * counters.
7981          */
7982         if (settings->counter_offset_beacon[0] &&
7983             !settings->counter_offset_beacon[1]) {
7984                 csa_off_len = 1;
7985         } else if (settings->counter_offset_beacon[1] &&
7986                    !settings->counter_offset_beacon[0]) {
7987                 csa_off_len = 1;
7988                 settings->counter_offset_beacon[0] =
7989                         settings->counter_offset_beacon[1];
7990                 settings->counter_offset_presp[0] =
7991                         settings->counter_offset_presp[1];
7992         } else if (settings->counter_offset_beacon[1] &&
7993                    settings->counter_offset_beacon[0]) {
7994                 csa_off_len = 2;
7995         } else {
7996                 wpa_printf(MSG_ERROR, "nl80211: No CSA counters provided");
7997                 return -EINVAL;
7998         }
7999
8000         /* Check CSA counters validity */
8001         if (drv->capa.max_csa_counters &&
8002             csa_off_len > drv->capa.max_csa_counters) {
8003                 wpa_printf(MSG_ERROR,
8004                            "nl80211: Too many CSA counters provided");
8005                 return -EINVAL;
8006         }
8007
8008         if (!settings->beacon_csa.tail)
8009                 return -EINVAL;
8010
8011         for (i = 0; i < csa_off_len; i++) {
8012                 u16 csa_c_off_bcn = settings->counter_offset_beacon[i];
8013                 u16 csa_c_off_presp = settings->counter_offset_presp[i];
8014
8015                 if ((settings->beacon_csa.tail_len <= csa_c_off_bcn) ||
8016                     (settings->beacon_csa.tail[csa_c_off_bcn] !=
8017                      settings->cs_count))
8018                         return -EINVAL;
8019
8020                 if (settings->beacon_csa.probe_resp &&
8021                     ((settings->beacon_csa.probe_resp_len <=
8022                       csa_c_off_presp) ||
8023                      (settings->beacon_csa.probe_resp[csa_c_off_presp] !=
8024                       settings->cs_count)))
8025                         return -EINVAL;
8026         }
8027
8028         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
8029             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
8030                         settings->cs_count) ||
8031             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
8032             (settings->block_tx &&
8033              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
8034                 goto error;
8035
8036         /* beacon_after params */
8037         ret = set_beacon_data(msg, &settings->beacon_after);
8038         if (ret)
8039                 goto error;
8040
8041         /* beacon_csa params */
8042         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
8043         if (!beacon_csa)
8044                 goto fail;
8045
8046         ret = set_beacon_data(msg, &settings->beacon_csa);
8047         if (ret)
8048                 goto error;
8049
8050         if (nla_put(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
8051                     csa_off_len * sizeof(u16),
8052                     settings->counter_offset_beacon) ||
8053             (settings->beacon_csa.probe_resp &&
8054              nla_put(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
8055                      csa_off_len * sizeof(u16),
8056                      settings->counter_offset_presp)))
8057                 goto fail;
8058
8059         nla_nest_end(msg, beacon_csa);
8060         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8061         if (ret) {
8062                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
8063                            ret, strerror(-ret));
8064         }
8065         return ret;
8066
8067 fail:
8068         ret = -ENOBUFS;
8069 error:
8070         nlmsg_free(msg);
8071         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
8072         return ret;
8073 }
8074
8075
8076 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
8077                           u8 user_priority, u16 admitted_time)
8078 {
8079         struct i802_bss *bss = priv;
8080         struct wpa_driver_nl80211_data *drv = bss->drv;
8081         struct nl_msg *msg;
8082         int ret;
8083
8084         wpa_printf(MSG_DEBUG,
8085                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
8086                    tsid, admitted_time, user_priority);
8087
8088         if (!is_sta_interface(drv->nlmode))
8089                 return -ENOTSUP;
8090
8091         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
8092         if (!msg ||
8093             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8094             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8095             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
8096             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
8097                 nlmsg_free(msg);
8098                 return -ENOBUFS;
8099         }
8100
8101         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8102         if (ret)
8103                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
8104                            ret, strerror(-ret));
8105         return ret;
8106 }
8107
8108
8109 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
8110 {
8111         struct i802_bss *bss = priv;
8112         struct wpa_driver_nl80211_data *drv = bss->drv;
8113         struct nl_msg *msg;
8114         int ret;
8115
8116         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
8117
8118         if (!is_sta_interface(drv->nlmode))
8119                 return -ENOTSUP;
8120
8121         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
8122             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
8123             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
8124                 nlmsg_free(msg);
8125                 return -ENOBUFS;
8126         }
8127
8128         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8129         if (ret)
8130                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
8131                            ret, strerror(-ret));
8132         return ret;
8133 }
8134
8135
8136 #ifdef CONFIG_TESTING_OPTIONS
8137 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
8138 {
8139         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8140         struct wpabuf *buf = arg;
8141
8142         if (!buf)
8143                 return NL_SKIP;
8144
8145         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
8146                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
8147                 return NL_SKIP;
8148         }
8149
8150         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
8151                         genlmsg_attrlen(gnlh, 0));
8152
8153         return NL_SKIP;
8154 }
8155 #endif /* CONFIG_TESTING_OPTIONS */
8156
8157
8158 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
8159 {
8160         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8161         struct nlattr *nl_vendor_reply, *nl;
8162         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8163         struct wpabuf *buf = arg;
8164         int rem;
8165
8166         if (!buf)
8167                 return NL_SKIP;
8168
8169         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8170                   genlmsg_attrlen(gnlh, 0), NULL);
8171         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
8172
8173         if (!nl_vendor_reply)
8174                 return NL_SKIP;
8175
8176         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
8177                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
8178                 return NL_SKIP;
8179         }
8180
8181         nla_for_each_nested(nl, nl_vendor_reply, rem) {
8182                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
8183         }
8184
8185         return NL_SKIP;
8186 }
8187
8188
8189 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
8190                               unsigned int subcmd, const u8 *data,
8191                               size_t data_len, struct wpabuf *buf)
8192 {
8193         struct i802_bss *bss = priv;
8194         struct wpa_driver_nl80211_data *drv = bss->drv;
8195         struct nl_msg *msg;
8196         int ret;
8197
8198 #ifdef CONFIG_TESTING_OPTIONS
8199         if (vendor_id == 0xffffffff) {
8200                 msg = nlmsg_alloc();
8201                 if (!msg)
8202                         return -ENOMEM;
8203
8204                 nl80211_cmd(drv, msg, 0, subcmd);
8205                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
8206                     0)
8207                         goto fail;
8208                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
8209                 if (ret)
8210                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
8211                                    ret);
8212                 return ret;
8213         }
8214 #endif /* CONFIG_TESTING_OPTIONS */
8215
8216         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
8217             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
8218             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
8219             (data &&
8220              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
8221                 goto fail;
8222
8223         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
8224         if (ret)
8225                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
8226                            ret);
8227         return ret;
8228
8229 fail:
8230         nlmsg_free(msg);
8231         return -ENOBUFS;
8232 }
8233
8234
8235 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
8236                                u8 qos_map_set_len)
8237 {
8238         struct i802_bss *bss = priv;
8239         struct wpa_driver_nl80211_data *drv = bss->drv;
8240         struct nl_msg *msg;
8241         int ret;
8242
8243         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
8244                     qos_map_set, qos_map_set_len);
8245
8246         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
8247             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
8248                 nlmsg_free(msg);
8249                 return -ENOBUFS;
8250         }
8251
8252         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8253         if (ret)
8254                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
8255
8256         return ret;
8257 }
8258
8259
8260 static int nl80211_set_wowlan(void *priv,
8261                               const struct wowlan_triggers *triggers)
8262 {
8263         struct i802_bss *bss = priv;
8264         struct wpa_driver_nl80211_data *drv = bss->drv;
8265         struct nl_msg *msg;
8266         struct nlattr *wowlan_triggers;
8267         int ret;
8268
8269         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
8270
8271         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_SET_WOWLAN)) ||
8272             !(wowlan_triggers = nla_nest_start(msg,
8273                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
8274             (triggers->any &&
8275              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8276             (triggers->disconnect &&
8277              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8278             (triggers->magic_pkt &&
8279              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8280             (triggers->gtk_rekey_failure &&
8281              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8282             (triggers->eap_identity_req &&
8283              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8284             (triggers->four_way_handshake &&
8285              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8286             (triggers->rfkill_release &&
8287              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
8288                 nlmsg_free(msg);
8289                 return -ENOBUFS;
8290         }
8291
8292         nla_nest_end(msg, wowlan_triggers);
8293
8294         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8295         if (ret)
8296                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
8297
8298         return ret;
8299 }
8300
8301
8302 #ifdef CONFIG_DRIVER_NL80211_QCA
8303 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
8304 {
8305         struct i802_bss *bss = priv;
8306         struct wpa_driver_nl80211_data *drv = bss->drv;
8307         struct nl_msg *msg;
8308         struct nlattr *params;
8309
8310         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
8311
8312         if (!drv->roaming_vendor_cmd_avail) {
8313                 wpa_printf(MSG_DEBUG,
8314                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
8315                 return -1;
8316         }
8317
8318         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8319             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8320             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8321                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
8322             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8323             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
8324                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
8325                         QCA_ROAMING_NOT_ALLOWED) ||
8326             (bssid &&
8327              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
8328                 nlmsg_free(msg);
8329                 return -1;
8330         }
8331         nla_nest_end(msg, params);
8332
8333         return send_and_recv_msgs(drv, msg, NULL, NULL);
8334 }
8335 #endif /* CONFIG_DRIVER_NL80211_QCA */
8336
8337
8338 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
8339 {
8340         struct i802_bss *bss = priv;
8341         struct wpa_driver_nl80211_data *drv = bss->drv;
8342         int new_addr = addr != NULL;
8343
8344         if (TEST_FAIL())
8345                 return -1;
8346
8347         if (!addr)
8348                 addr = drv->perm_addr;
8349
8350         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
8351                 return -1;
8352
8353         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
8354         {
8355                 wpa_printf(MSG_DEBUG,
8356                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
8357                            bss->ifname, MAC2STR(addr));
8358                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
8359                                           1) < 0) {
8360                         wpa_printf(MSG_DEBUG,
8361                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
8362                 }
8363                 return -1;
8364         }
8365
8366         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
8367                    bss->ifname, MAC2STR(addr));
8368         drv->addr_changed = new_addr;
8369         os_memcpy(bss->addr, addr, ETH_ALEN);
8370
8371         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
8372         {
8373                 wpa_printf(MSG_DEBUG,
8374                            "nl80211: Could not restore interface UP after set_mac_addr");
8375         }
8376
8377         return 0;
8378 }
8379
8380
8381 #ifdef CONFIG_MESH
8382
8383 static int wpa_driver_nl80211_init_mesh(void *priv)
8384 {
8385         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
8386                 wpa_printf(MSG_INFO,
8387                            "nl80211: Failed to set interface into mesh mode");
8388                 return -1;
8389         }
8390         return 0;
8391 }
8392
8393
8394 static int nl80211_put_mesh_id(struct nl_msg *msg, const u8 *mesh_id,
8395                                size_t mesh_id_len)
8396 {
8397         if (mesh_id) {
8398                 wpa_hexdump_ascii(MSG_DEBUG, "  * Mesh ID (SSID)",
8399                                   mesh_id, mesh_id_len);
8400                 return nla_put(msg, NL80211_ATTR_MESH_ID, mesh_id_len, mesh_id);
8401         }
8402
8403         return 0;
8404 }
8405
8406
8407 static int nl80211_join_mesh(struct i802_bss *bss,
8408                              struct wpa_driver_mesh_join_params *params)
8409 {
8410         struct wpa_driver_nl80211_data *drv = bss->drv;
8411         struct nl_msg *msg;
8412         struct nlattr *container;
8413         int ret = -1;
8414
8415         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
8416         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
8417         if (!msg ||
8418             nl80211_put_freq_params(msg, &params->freq) ||
8419             nl80211_put_basic_rates(msg, params->basic_rates) ||
8420             nl80211_put_mesh_id(msg, params->meshid, params->meshid_len) ||
8421             nl80211_put_beacon_int(msg, params->beacon_int) ||
8422             nl80211_put_dtim_period(msg, params->dtim_period))
8423                 goto fail;
8424
8425         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
8426
8427         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
8428         if (!container)
8429                 goto fail;
8430
8431         if (params->ies) {
8432                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
8433                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
8434                             params->ies))
8435                         goto fail;
8436         }
8437         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
8438         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
8439                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
8440                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
8441                         goto fail;
8442         }
8443         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
8444             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
8445                 goto fail;
8446         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
8447             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
8448                 goto fail;
8449         nla_nest_end(msg, container);
8450
8451         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
8452         if (!container)
8453                 goto fail;
8454
8455         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
8456             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
8457                 goto fail;
8458         if (nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8459                         params->max_peer_links))
8460                 goto fail;
8461
8462         /*
8463          * Set NL80211_MESHCONF_PLINK_TIMEOUT even if user mpm is used because
8464          * the timer could disconnect stations even in that case.
8465          */
8466         if (nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8467                         params->conf.peer_link_timeout)) {
8468                 wpa_printf(MSG_ERROR, "nl80211: Failed to set PLINK_TIMEOUT");
8469                 goto fail;
8470         }
8471
8472         nla_nest_end(msg, container);
8473
8474         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8475         msg = NULL;
8476         if (ret) {
8477                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
8478                            ret, strerror(-ret));
8479                 goto fail;
8480         }
8481         ret = 0;
8482         drv->assoc_freq = bss->freq = params->freq.freq;
8483         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
8484
8485 fail:
8486         nlmsg_free(msg);
8487         return ret;
8488 }
8489
8490
8491 static int
8492 wpa_driver_nl80211_join_mesh(void *priv,
8493                              struct wpa_driver_mesh_join_params *params)
8494 {
8495         struct i802_bss *bss = priv;
8496         int ret, timeout;
8497
8498         timeout = params->conf.peer_link_timeout;
8499
8500         /* Disable kernel inactivity timer */
8501         if (params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM)
8502                 params->conf.peer_link_timeout = 0;
8503
8504         ret = nl80211_join_mesh(bss, params);
8505         if (ret == -EINVAL && params->conf.peer_link_timeout == 0) {
8506                 wpa_printf(MSG_DEBUG,
8507                            "nl80211: Mesh join retry for peer_link_timeout");
8508                 /*
8509                  * Old kernel does not support setting
8510                  * NL80211_MESHCONF_PLINK_TIMEOUT to zero, so set 60 seconds
8511                  * into future from peer_link_timeout.
8512                  */
8513                 params->conf.peer_link_timeout = timeout + 60;
8514                 ret = nl80211_join_mesh(priv, params);
8515         }
8516
8517         params->conf.peer_link_timeout = timeout;
8518         return ret;
8519 }
8520
8521
8522 static int wpa_driver_nl80211_leave_mesh(void *priv)
8523 {
8524         struct i802_bss *bss = priv;
8525         struct wpa_driver_nl80211_data *drv = bss->drv;
8526         struct nl_msg *msg;
8527         int ret;
8528
8529         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
8530         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
8531         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8532         if (ret) {
8533                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
8534                            ret, strerror(-ret));
8535         } else {
8536                 wpa_printf(MSG_DEBUG,
8537                            "nl80211: mesh leave request send successfully");
8538         }
8539
8540         if (wpa_driver_nl80211_set_mode(drv->first_bss,
8541                                         NL80211_IFTYPE_STATION)) {
8542                 wpa_printf(MSG_INFO,
8543                            "nl80211: Failed to set interface into station mode");
8544         }
8545         return ret;
8546 }
8547
8548 #endif /* CONFIG_MESH */
8549
8550
8551 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
8552                                       const u8 *ipaddr, int prefixlen,
8553                                       const u8 *addr)
8554 {
8555 #ifdef CONFIG_LIBNL3_ROUTE
8556         struct i802_bss *bss = priv;
8557         struct wpa_driver_nl80211_data *drv = bss->drv;
8558         struct rtnl_neigh *rn;
8559         struct nl_addr *nl_ipaddr = NULL;
8560         struct nl_addr *nl_lladdr = NULL;
8561         int family, addrsize;
8562         int res;
8563
8564         if (!ipaddr || prefixlen == 0 || !addr)
8565                 return -EINVAL;
8566
8567         if (bss->br_ifindex == 0) {
8568                 wpa_printf(MSG_DEBUG,
8569                            "nl80211: bridge must be set before adding an ip neigh to it");
8570                 return -1;
8571         }
8572
8573         if (!drv->rtnl_sk) {
8574                 wpa_printf(MSG_DEBUG,
8575                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8576                 return -1;
8577         }
8578
8579         if (version == 4) {
8580                 family = AF_INET;
8581                 addrsize = 4;
8582         } else if (version == 6) {
8583                 family = AF_INET6;
8584                 addrsize = 16;
8585         } else {
8586                 return -EINVAL;
8587         }
8588
8589         rn = rtnl_neigh_alloc();
8590         if (rn == NULL)
8591                 return -ENOMEM;
8592
8593         /* set the destination ip address for neigh */
8594         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8595         if (nl_ipaddr == NULL) {
8596                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8597                 res = -ENOMEM;
8598                 goto errout;
8599         }
8600         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8601         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8602         if (res) {
8603                 wpa_printf(MSG_DEBUG,
8604                            "nl80211: neigh set destination addr failed");
8605                 goto errout;
8606         }
8607
8608         /* set the corresponding lladdr for neigh */
8609         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8610         if (nl_lladdr == NULL) {
8611                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8612                 res = -ENOMEM;
8613                 goto errout;
8614         }
8615         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8616
8617         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8618         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8619
8620         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8621         if (res) {
8622                 wpa_printf(MSG_DEBUG,
8623                            "nl80211: Adding bridge ip neigh failed: %s",
8624                            strerror(errno));
8625         }
8626 errout:
8627         if (nl_lladdr)
8628                 nl_addr_put(nl_lladdr);
8629         if (nl_ipaddr)
8630                 nl_addr_put(nl_ipaddr);
8631         if (rn)
8632                 rtnl_neigh_put(rn);
8633         return res;
8634 #else /* CONFIG_LIBNL3_ROUTE */
8635         return -1;
8636 #endif /* CONFIG_LIBNL3_ROUTE */
8637 }
8638
8639
8640 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8641                                          const u8 *ipaddr)
8642 {
8643 #ifdef CONFIG_LIBNL3_ROUTE
8644         struct i802_bss *bss = priv;
8645         struct wpa_driver_nl80211_data *drv = bss->drv;
8646         struct rtnl_neigh *rn;
8647         struct nl_addr *nl_ipaddr;
8648         int family, addrsize;
8649         int res;
8650
8651         if (!ipaddr)
8652                 return -EINVAL;
8653
8654         if (version == 4) {
8655                 family = AF_INET;
8656                 addrsize = 4;
8657         } else if (version == 6) {
8658                 family = AF_INET6;
8659                 addrsize = 16;
8660         } else {
8661                 return -EINVAL;
8662         }
8663
8664         if (bss->br_ifindex == 0) {
8665                 wpa_printf(MSG_DEBUG,
8666                            "nl80211: bridge must be set to delete an ip neigh");
8667                 return -1;
8668         }
8669
8670         if (!drv->rtnl_sk) {
8671                 wpa_printf(MSG_DEBUG,
8672                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8673                 return -1;
8674         }
8675
8676         rn = rtnl_neigh_alloc();
8677         if (rn == NULL)
8678                 return -ENOMEM;
8679
8680         /* set the destination ip address for neigh */
8681         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8682         if (nl_ipaddr == NULL) {
8683                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8684                 res = -ENOMEM;
8685                 goto errout;
8686         }
8687         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8688         if (res) {
8689                 wpa_printf(MSG_DEBUG,
8690                            "nl80211: neigh set destination addr failed");
8691                 goto errout;
8692         }
8693
8694         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8695
8696         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8697         if (res) {
8698                 wpa_printf(MSG_DEBUG,
8699                            "nl80211: Deleting bridge ip neigh failed: %s",
8700                            strerror(errno));
8701         }
8702 errout:
8703         if (nl_ipaddr)
8704                 nl_addr_put(nl_ipaddr);
8705         if (rn)
8706                 rtnl_neigh_put(rn);
8707         return res;
8708 #else /* CONFIG_LIBNL3_ROUTE */
8709         return -1;
8710 #endif /* CONFIG_LIBNL3_ROUTE */
8711 }
8712
8713
8714 static int linux_write_system_file(const char *path, unsigned int val)
8715 {
8716         char buf[50];
8717         int fd, len;
8718
8719         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8720         if (os_snprintf_error(sizeof(buf), len))
8721                 return -1;
8722
8723         fd = open(path, O_WRONLY);
8724         if (fd < 0)
8725                 return -1;
8726
8727         if (write(fd, buf, len) < 0) {
8728                 wpa_printf(MSG_DEBUG,
8729                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8730                            path, val);
8731                 close(fd);
8732                 return -1;
8733         }
8734         close(fd);
8735
8736         return 0;
8737 }
8738
8739
8740 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8741 {
8742         switch (attr) {
8743         case DRV_BR_PORT_ATTR_PROXYARP:
8744                 return "proxyarp_wifi";
8745         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8746                 return "hairpin_mode";
8747         }
8748
8749         return NULL;
8750 }
8751
8752
8753 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8754                                        unsigned int val)
8755 {
8756         struct i802_bss *bss = priv;
8757         char path[128];
8758         const char *attr_txt;
8759
8760         attr_txt = drv_br_port_attr_str(attr);
8761         if (attr_txt == NULL)
8762                 return -EINVAL;
8763
8764         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8765                     bss->ifname, attr_txt);
8766
8767         if (linux_write_system_file(path, val))
8768                 return -1;
8769
8770         return 0;
8771 }
8772
8773
8774 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8775 {
8776         switch (param) {
8777         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8778                 return "arp_accept";
8779         default:
8780                 return NULL;
8781         }
8782 }
8783
8784
8785 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8786                                        unsigned int val)
8787 {
8788         struct i802_bss *bss = priv;
8789         char path[128];
8790         const char *param_txt;
8791         int ip_version = 4;
8792
8793         if (param == DRV_BR_MULTICAST_SNOOPING) {
8794                 os_snprintf(path, sizeof(path),
8795                             "/sys/devices/virtual/net/%s/bridge/multicast_snooping",
8796                             bss->brname);
8797                 goto set_val;
8798         }
8799
8800         param_txt = drv_br_net_param_str(param);
8801         if (param_txt == NULL)
8802                 return -EINVAL;
8803
8804         switch (param) {
8805                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8806                         ip_version = 4;
8807                         break;
8808                 default:
8809                         return -EINVAL;
8810         }
8811
8812         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8813                     ip_version, bss->brname, param_txt);
8814
8815 set_val:
8816         if (linux_write_system_file(path, val))
8817                 return -1;
8818
8819         return 0;
8820 }
8821
8822
8823 #ifdef CONFIG_DRIVER_NL80211_QCA
8824
8825 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8826 {
8827         switch (hw_mode) {
8828         case HOSTAPD_MODE_IEEE80211B:
8829                 return QCA_ACS_MODE_IEEE80211B;
8830         case HOSTAPD_MODE_IEEE80211G:
8831                 return QCA_ACS_MODE_IEEE80211G;
8832         case HOSTAPD_MODE_IEEE80211A:
8833                 return QCA_ACS_MODE_IEEE80211A;
8834         case HOSTAPD_MODE_IEEE80211AD:
8835                 return QCA_ACS_MODE_IEEE80211AD;
8836         case HOSTAPD_MODE_IEEE80211ANY:
8837                 return QCA_ACS_MODE_IEEE80211ANY;
8838         default:
8839                 return -1;
8840         }
8841 }
8842
8843
8844 static int add_acs_freq_list(struct nl_msg *msg, const int *freq_list)
8845 {
8846         int i, len, ret;
8847         u32 *freqs;
8848
8849         if (!freq_list)
8850                 return 0;
8851         len = int_array_len(freq_list);
8852         freqs = os_malloc(sizeof(u32) * len);
8853         if (!freqs)
8854                 return -1;
8855         for (i = 0; i < len; i++)
8856                 freqs[i] = freq_list[i];
8857         ret = nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_FREQ_LIST,
8858                       sizeof(u32) * len, freqs);
8859         os_free(freqs);
8860         return ret;
8861 }
8862
8863
8864 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8865 {
8866         struct i802_bss *bss = priv;
8867         struct wpa_driver_nl80211_data *drv = bss->drv;
8868         struct nl_msg *msg;
8869         struct nlattr *data;
8870         int ret;
8871         int mode;
8872
8873         mode = hw_mode_to_qca_acs(params->hw_mode);
8874         if (mode < 0)
8875                 return -1;
8876
8877         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8878             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8879             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8880                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8881             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8882             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8883             (params->ht_enabled &&
8884              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8885             (params->ht40_enabled &&
8886              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED)) ||
8887             (params->vht_enabled &&
8888              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_VHT_ENABLED)) ||
8889             nla_put_u16(msg, QCA_WLAN_VENDOR_ATTR_ACS_CHWIDTH,
8890                         params->ch_width) ||
8891             (params->ch_list_len &&
8892              nla_put(msg, QCA_WLAN_VENDOR_ATTR_ACS_CH_LIST, params->ch_list_len,
8893                      params->ch_list)) ||
8894             add_acs_freq_list(msg, params->freq_list)) {
8895                 nlmsg_free(msg);
8896                 return -ENOBUFS;
8897         }
8898         nla_nest_end(msg, data);
8899
8900         wpa_printf(MSG_DEBUG,
8901                    "nl80211: ACS Params: HW_MODE: %d HT: %d HT40: %d VHT: %d BW: %d CH_LIST_LEN: %u",
8902                    params->hw_mode, params->ht_enabled, params->ht40_enabled,
8903                    params->vht_enabled, params->ch_width, params->ch_list_len);
8904
8905         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8906         if (ret) {
8907                 wpa_printf(MSG_DEBUG,
8908                            "nl80211: Failed to invoke driver ACS function: %s",
8909                            strerror(errno));
8910         }
8911         return ret;
8912 }
8913
8914
8915 static int nl80211_set_band(void *priv, enum set_band band)
8916 {
8917         struct i802_bss *bss = priv;
8918         struct wpa_driver_nl80211_data *drv = bss->drv;
8919         struct nl_msg *msg;
8920         struct nlattr *data;
8921         int ret;
8922         enum qca_set_band qca_band;
8923
8924         if (!drv->setband_vendor_cmd_avail)
8925                 return -1;
8926
8927         switch (band) {
8928         case WPA_SETBAND_AUTO:
8929                 qca_band = QCA_SETBAND_AUTO;
8930                 break;
8931         case WPA_SETBAND_5G:
8932                 qca_band = QCA_SETBAND_5G;
8933                 break;
8934         case WPA_SETBAND_2G:
8935                 qca_band = QCA_SETBAND_2G;
8936                 break;
8937         default:
8938                 return -1;
8939         }
8940
8941         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8942             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8943             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8944                         QCA_NL80211_VENDOR_SUBCMD_SETBAND) ||
8945             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8946             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_SETBAND_VALUE, qca_band)) {
8947                 nlmsg_free(msg);
8948                 return -ENOBUFS;
8949         }
8950         nla_nest_end(msg, data);
8951
8952         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8953         if (ret) {
8954                 wpa_printf(MSG_DEBUG,
8955                            "nl80211: Driver setband function failed: %s",
8956                            strerror(errno));
8957         }
8958         return ret;
8959 }
8960
8961
8962 struct nl80211_pcl {
8963         unsigned int num;
8964         unsigned int *freq_list;
8965 };
8966
8967 static int preferred_freq_info_handler(struct nl_msg *msg, void *arg)
8968 {
8969         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8970         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8971         struct nl80211_pcl *param = arg;
8972         struct nlattr *nl_vend, *attr;
8973         enum qca_iface_type iface_type;
8974         struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
8975         unsigned int num, max_num;
8976         u32 *freqs;
8977
8978         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8979                   genlmsg_attrlen(gnlh, 0), NULL);
8980
8981         nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
8982         if (!nl_vend)
8983                 return NL_SKIP;
8984
8985         nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
8986                   nla_data(nl_vend), nla_len(nl_vend), NULL);
8987
8988         attr = tb_vendor[
8989                 QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE];
8990         if (!attr) {
8991                 wpa_printf(MSG_ERROR, "nl80211: iface_type couldn't be found");
8992                 param->num = 0;
8993                 return NL_SKIP;
8994         }
8995
8996         iface_type = (enum qca_iface_type) nla_get_u32(attr);
8997         wpa_printf(MSG_DEBUG, "nl80211: Driver returned iface_type=%d",
8998                    iface_type);
8999
9000         attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST];
9001         if (!attr) {
9002                 wpa_printf(MSG_ERROR,
9003                            "nl80211: preferred_freq_list couldn't be found");
9004                 param->num = 0;
9005                 return NL_SKIP;
9006         }
9007
9008         /*
9009          * param->num has the maximum number of entries for which there
9010          * is room in the freq_list provided by the caller.
9011          */
9012         freqs = nla_data(attr);
9013         max_num = nla_len(attr) / sizeof(u32);
9014         if (max_num > param->num)
9015                 max_num = param->num;
9016         for (num = 0; num < max_num; num++)
9017                 param->freq_list[num] = freqs[num];
9018         param->num = num;
9019
9020         return NL_SKIP;
9021 }
9022
9023
9024 static int nl80211_get_pref_freq_list(void *priv,
9025                                       enum wpa_driver_if_type if_type,
9026                                       unsigned int *num,
9027                                       unsigned int *freq_list)
9028 {
9029         struct i802_bss *bss = priv;
9030         struct wpa_driver_nl80211_data *drv = bss->drv;
9031         struct nl_msg *msg;
9032         int ret;
9033         unsigned int i;
9034         struct nlattr *params;
9035         struct nl80211_pcl param;
9036         enum qca_iface_type iface_type;
9037
9038         if (!drv->get_pref_freq_list)
9039                 return -1;
9040
9041         switch (if_type) {
9042         case WPA_IF_STATION:
9043                 iface_type = QCA_IFACE_TYPE_STA;
9044                 break;
9045         case WPA_IF_AP_BSS:
9046                 iface_type = QCA_IFACE_TYPE_AP;
9047                 break;
9048         case WPA_IF_P2P_GO:
9049                 iface_type = QCA_IFACE_TYPE_P2P_GO;
9050                 break;
9051         case WPA_IF_P2P_CLIENT:
9052                 iface_type = QCA_IFACE_TYPE_P2P_CLIENT;
9053                 break;
9054         case WPA_IF_IBSS:
9055                 iface_type = QCA_IFACE_TYPE_IBSS;
9056                 break;
9057         case WPA_IF_TDLS:
9058                 iface_type = QCA_IFACE_TYPE_TDLS;
9059                 break;
9060         default:
9061                 return -1;
9062         }
9063
9064         param.num = *num;
9065         param.freq_list = freq_list;
9066
9067         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9068             nla_put_u32(msg, NL80211_ATTR_IFINDEX, drv->ifindex) ||
9069             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9070             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9071                         QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST) ||
9072             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9073             nla_put_u32(msg,
9074                         QCA_WLAN_VENDOR_ATTR_GET_PREFERRED_FREQ_LIST_IFACE_TYPE,
9075                         iface_type)) {
9076                 wpa_printf(MSG_ERROR,
9077                            "%s: err in adding vendor_cmd and vendor_data",
9078                            __func__);
9079                 nlmsg_free(msg);
9080                 return -1;
9081         }
9082         nla_nest_end(msg, params);
9083
9084         os_memset(freq_list, 0, *num * sizeof(freq_list[0]));
9085         ret = send_and_recv_msgs(drv, msg, preferred_freq_info_handler, &param);
9086         if (ret) {
9087                 wpa_printf(MSG_ERROR,
9088                            "%s: err in send_and_recv_msgs", __func__);
9089                 return ret;
9090         }
9091
9092         *num = param.num;
9093
9094         for (i = 0; i < *num; i++) {
9095                 wpa_printf(MSG_DEBUG, "nl80211: preferred_channel_list[%d]=%d",
9096                            i, freq_list[i]);
9097         }
9098
9099         return 0;
9100 }
9101
9102
9103 static int nl80211_set_prob_oper_freq(void *priv, unsigned int freq)
9104 {
9105         struct i802_bss *bss = priv;
9106         struct wpa_driver_nl80211_data *drv = bss->drv;
9107         struct nl_msg *msg;
9108         int ret;
9109         struct nlattr *params;
9110
9111         if (!drv->set_prob_oper_freq)
9112                 return -1;
9113
9114         wpa_printf(MSG_DEBUG,
9115                    "nl80211: Set P2P probable operating freq %u for ifindex %d",
9116                    freq, bss->ifindex);
9117
9118         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9119             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9120             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9121                         QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL) ||
9122             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
9123             nla_put_u32(msg,
9124                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_IFACE_TYPE,
9125                         QCA_IFACE_TYPE_P2P_CLIENT) ||
9126             nla_put_u32(msg,
9127                         QCA_WLAN_VENDOR_ATTR_PROBABLE_OPER_CHANNEL_FREQ,
9128                         freq)) {
9129                 wpa_printf(MSG_ERROR,
9130                            "%s: err in adding vendor_cmd and vendor_data",
9131                            __func__);
9132                 nlmsg_free(msg);
9133                 return -1;
9134         }
9135         nla_nest_end(msg, params);
9136
9137         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9138         msg = NULL;
9139         if (ret) {
9140                 wpa_printf(MSG_ERROR, "%s: err in send_and_recv_msgs",
9141                            __func__);
9142                 return ret;
9143         }
9144         nlmsg_free(msg);
9145         return 0;
9146 }
9147
9148
9149 static int nl80211_p2p_lo_start(void *priv, unsigned int freq,
9150                                 unsigned int period, unsigned int interval,
9151                                 unsigned int count, const u8 *device_types,
9152                                 size_t dev_types_len,
9153                                 const u8 *ies, size_t ies_len)
9154 {
9155         struct i802_bss *bss = priv;
9156         struct wpa_driver_nl80211_data *drv = bss->drv;
9157         struct nl_msg *msg;
9158         struct nlattr *container;
9159         int ret;
9160
9161         wpa_printf(MSG_DEBUG,
9162                    "nl80211: Start P2P Listen offload: freq=%u, period=%u, interval=%u, count=%u",
9163                    freq, period, interval, count);
9164
9165         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD))
9166                 return -1;
9167
9168         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9169             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9170             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9171                         QCA_NL80211_VENDOR_SUBCMD_P2P_LISTEN_OFFLOAD_START))
9172                 goto fail;
9173
9174         container = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
9175         if (!container)
9176                 goto fail;
9177
9178         if (nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_CHANNEL,
9179                         freq) ||
9180             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_PERIOD,
9181                         period) ||
9182             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_INTERVAL,
9183                         interval) ||
9184             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_COUNT,
9185                         count) ||
9186             nla_put(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_DEVICE_TYPES,
9187                     dev_types_len, device_types) ||
9188             nla_put(msg, QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_VENDOR_IE,
9189                     ies_len, ies))
9190                 goto fail;
9191
9192         nla_nest_end(msg, container);
9193         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
9194         msg = NULL;
9195         if (ret) {
9196                 wpa_printf(MSG_DEBUG,
9197                            "nl80211: Failed to send P2P Listen offload vendor command");
9198                 goto fail;
9199         }
9200
9201         return 0;
9202
9203 fail:
9204         nlmsg_free(msg);
9205         return -1;
9206 }
9207
9208
9209 static int nl80211_p2p_lo_stop(void *priv)
9210 {
9211         struct i802_bss *bss = priv;
9212         struct wpa_driver_nl80211_data *drv = bss->drv;
9213         struct nl_msg *msg;
9214
9215         wpa_printf(MSG_DEBUG, "nl80211: Stop P2P Listen offload");
9216
9217         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD))
9218                 return -1;
9219
9220         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
9221             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
9222             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
9223                         QCA_NL80211_VENDOR_SUBCMD_P2P_LISTEN_OFFLOAD_STOP)) {
9224                 nlmsg_free(msg);
9225                 return -1;
9226         }
9227
9228         return send_and_recv_msgs(drv, msg, NULL, NULL);
9229 }
9230
9231 #endif /* CONFIG_DRIVER_NL80211_QCA */
9232
9233
9234 static int nl80211_write_to_file(const char *name, unsigned int val)
9235 {
9236         int fd, len;
9237         char tmp[128];
9238
9239         fd = open(name, O_RDWR);
9240         if (fd < 0) {
9241                 wpa_printf(MSG_ERROR, "nl80211: Failed to open %s: %s",
9242                            name, strerror(errno));
9243                 return fd;
9244         }
9245
9246         len = os_snprintf(tmp, sizeof(tmp), "%u\n", val);
9247         len = write(fd, tmp, len);
9248         if (len < 0)
9249                 wpa_printf(MSG_ERROR, "nl80211: Failed to write to %s: %s",
9250                            name, strerror(errno));
9251         close(fd);
9252
9253         return 0;
9254 }
9255
9256
9257 static int nl80211_configure_data_frame_filters(void *priv, u32 filter_flags)
9258 {
9259         struct i802_bss *bss = priv;
9260         char path[128];
9261         int ret;
9262
9263         wpa_printf(MSG_DEBUG, "nl80211: Data frame filter flags=0x%x",
9264                    filter_flags);
9265
9266         /* Configure filtering of unicast frame encrypted using GTK */
9267         ret = os_snprintf(path, sizeof(path),
9268                           "/proc/sys/net/ipv4/conf/%s/drop_unicast_in_l2_multicast",
9269                           bss->ifname);
9270         if (os_snprintf_error(sizeof(path), ret))
9271                 return -1;
9272
9273         ret = nl80211_write_to_file(path,
9274                                     !!(filter_flags &
9275                                        WPA_DATA_FRAME_FILTER_FLAG_GTK));
9276         if (ret) {
9277                 wpa_printf(MSG_ERROR,
9278                            "nl80211: Failed to set IPv4 unicast in multicast filter");
9279                 return ret;
9280         }
9281
9282         os_snprintf(path, sizeof(path),
9283                     "/proc/sys/net/ipv6/conf/%s/drop_unicast_in_l2_multicast",
9284                     bss->ifname);
9285         ret = nl80211_write_to_file(path,
9286                                     !!(filter_flags &
9287                                        WPA_DATA_FRAME_FILTER_FLAG_GTK));
9288
9289         if (ret) {
9290                 wpa_printf(MSG_ERROR,
9291                            "nl80211: Failed to set IPv6 unicast in multicast filter");
9292                 return ret;
9293         }
9294
9295         /* Configure filtering of unicast frame encrypted using GTK */
9296         os_snprintf(path, sizeof(path),
9297                     "/proc/sys/net/ipv4/conf/%s/drop_gratuitous_arp",
9298                     bss->ifname);
9299         ret = nl80211_write_to_file(path,
9300                                     !!(filter_flags &
9301                                        WPA_DATA_FRAME_FILTER_FLAG_ARP));
9302         if (ret) {
9303                 wpa_printf(MSG_ERROR,
9304                            "nl80211: Failed set gratuitous ARP filter");
9305                 return ret;
9306         }
9307
9308         /* Configure filtering of IPv6 NA frames */
9309         os_snprintf(path, sizeof(path),
9310                     "/proc/sys/net/ipv6/conf/%s/drop_unsolicited_na",
9311                     bss->ifname);
9312         ret = nl80211_write_to_file(path,
9313                                     !!(filter_flags &
9314                                        WPA_DATA_FRAME_FILTER_FLAG_NA));
9315         if (ret) {
9316                 wpa_printf(MSG_ERROR,
9317                            "nl80211: Failed to set unsolicited NA filter");
9318                 return ret;
9319         }
9320
9321         return 0;
9322 }
9323
9324
9325 static int nl80211_get_ext_capab(void *priv, enum wpa_driver_if_type type,
9326                                  const u8 **ext_capa, const u8 **ext_capa_mask,
9327                                  unsigned int *ext_capa_len)
9328 {
9329         struct i802_bss *bss = priv;
9330         struct wpa_driver_nl80211_data *drv = bss->drv;
9331         enum nl80211_iftype nlmode;
9332         unsigned int i;
9333
9334         if (!ext_capa || !ext_capa_mask || !ext_capa_len)
9335                 return -1;
9336
9337         nlmode = wpa_driver_nl80211_if_type(type);
9338
9339         /* By default, use the per-radio values */
9340         *ext_capa = drv->extended_capa;
9341         *ext_capa_mask = drv->extended_capa_mask;
9342         *ext_capa_len = drv->extended_capa_len;
9343
9344         /* Replace the default value if a per-interface type value exists */
9345         for (i = 0; i < drv->num_iface_ext_capa; i++) {
9346                 if (nlmode == drv->iface_ext_capa[i].iftype) {
9347                         *ext_capa = drv->iface_ext_capa[i].ext_capa;
9348                         *ext_capa_mask = drv->iface_ext_capa[i].ext_capa_mask;
9349                         *ext_capa_len = drv->iface_ext_capa[i].ext_capa_len;
9350                         break;
9351                 }
9352         }
9353
9354         return 0;
9355 }
9356
9357
9358 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9359         .name = "nl80211",
9360         .desc = "Linux nl80211/cfg80211",
9361         .get_bssid = wpa_driver_nl80211_get_bssid,
9362         .get_ssid = wpa_driver_nl80211_get_ssid,
9363         .set_key = driver_nl80211_set_key,
9364         .scan2 = driver_nl80211_scan2,
9365         .sched_scan = wpa_driver_nl80211_sched_scan,
9366         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9367         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9368         .abort_scan = wpa_driver_nl80211_abort_scan,
9369         .deauthenticate = driver_nl80211_deauthenticate,
9370         .authenticate = driver_nl80211_authenticate,
9371         .associate = wpa_driver_nl80211_associate,
9372         .global_init = nl80211_global_init,
9373         .global_deinit = nl80211_global_deinit,
9374         .init2 = wpa_driver_nl80211_init,
9375         .deinit = driver_nl80211_deinit,
9376         .get_capa = wpa_driver_nl80211_get_capa,
9377         .set_operstate = wpa_driver_nl80211_set_operstate,
9378         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9379         .set_country = wpa_driver_nl80211_set_country,
9380         .get_country = wpa_driver_nl80211_get_country,
9381         .set_ap = wpa_driver_nl80211_set_ap,
9382         .set_acl = wpa_driver_nl80211_set_acl,
9383         .if_add = wpa_driver_nl80211_if_add,
9384         .if_remove = driver_nl80211_if_remove,
9385         .send_mlme = driver_nl80211_send_mlme,
9386         .get_hw_feature_data = nl80211_get_hw_feature_data,
9387         .sta_add = wpa_driver_nl80211_sta_add,
9388         .sta_remove = driver_nl80211_sta_remove,
9389         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9390         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9391         .hapd_init = i802_init,
9392         .hapd_deinit = i802_deinit,
9393         .set_wds_sta = i802_set_wds_sta,
9394         .get_seqnum = i802_get_seqnum,
9395         .flush = i802_flush,
9396         .get_inact_sec = i802_get_inact_sec,
9397         .sta_clear_stats = i802_sta_clear_stats,
9398         .set_rts = i802_set_rts,
9399         .set_frag = i802_set_frag,
9400         .set_tx_queue_params = i802_set_tx_queue_params,
9401         .set_sta_vlan = driver_nl80211_set_sta_vlan,
9402         .sta_deauth = i802_sta_deauth,
9403         .sta_disassoc = i802_sta_disassoc,
9404         .read_sta_data = driver_nl80211_read_sta_data,
9405         .set_freq = i802_set_freq,
9406         .send_action = driver_nl80211_send_action,
9407         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9408         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9409         .cancel_remain_on_channel =
9410         wpa_driver_nl80211_cancel_remain_on_channel,
9411         .probe_req_report = driver_nl80211_probe_req_report,
9412         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9413         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9414         .resume = wpa_driver_nl80211_resume,
9415         .signal_monitor = nl80211_signal_monitor,
9416         .signal_poll = nl80211_signal_poll,
9417         .send_frame = nl80211_send_frame,
9418         .set_param = nl80211_set_param,
9419         .get_radio_name = nl80211_get_radio_name,
9420         .add_pmkid = nl80211_add_pmkid,
9421         .remove_pmkid = nl80211_remove_pmkid,
9422         .flush_pmkid = nl80211_flush_pmkid,
9423         .set_rekey_info = nl80211_set_rekey_info,
9424         .poll_client = nl80211_poll_client,
9425         .set_p2p_powersave = nl80211_set_p2p_powersave,
9426         .start_dfs_cac = nl80211_start_radar_detection,
9427         .stop_ap = wpa_driver_nl80211_stop_ap,
9428 #ifdef CONFIG_TDLS
9429         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9430         .tdls_oper = nl80211_tdls_oper,
9431         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
9432         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
9433 #endif /* CONFIG_TDLS */
9434         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
9435         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
9436         .get_survey = wpa_driver_nl80211_get_survey,
9437         .status = wpa_driver_nl80211_status,
9438         .switch_channel = nl80211_switch_channel,
9439 #ifdef ANDROID_P2P
9440         .set_noa = wpa_driver_set_p2p_noa,
9441         .get_noa = wpa_driver_get_p2p_noa,
9442         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9443 #endif /* ANDROID_P2P */
9444 #ifdef ANDROID
9445 #ifndef ANDROID_LIB_STUB
9446         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9447 #endif /* !ANDROID_LIB_STUB */
9448 #endif /* ANDROID */
9449         .vendor_cmd = nl80211_vendor_cmd,
9450         .set_qos_map = nl80211_set_qos_map,
9451         .set_wowlan = nl80211_set_wowlan,
9452         .set_mac_addr = nl80211_set_mac_addr,
9453 #ifdef CONFIG_MESH
9454         .init_mesh = wpa_driver_nl80211_init_mesh,
9455         .join_mesh = wpa_driver_nl80211_join_mesh,
9456         .leave_mesh = wpa_driver_nl80211_leave_mesh,
9457 #endif /* CONFIG_MESH */
9458         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
9459         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
9460         .br_port_set_attr = wpa_driver_br_port_set_attr,
9461         .br_set_net_param = wpa_driver_br_set_net_param,
9462         .add_tx_ts = nl80211_add_ts,
9463         .del_tx_ts = nl80211_del_ts,
9464         .get_ifindex = nl80211_get_ifindex,
9465 #ifdef CONFIG_DRIVER_NL80211_QCA
9466         .roaming = nl80211_roaming,
9467         .do_acs = wpa_driver_do_acs,
9468         .set_band = nl80211_set_band,
9469         .get_pref_freq_list = nl80211_get_pref_freq_list,
9470         .set_prob_oper_freq = nl80211_set_prob_oper_freq,
9471         .p2p_lo_start = nl80211_p2p_lo_start,
9472         .p2p_lo_stop = nl80211_p2p_lo_stop,
9473         .set_default_scan_ies = nl80211_set_default_scan_ies,
9474 #endif /* CONFIG_DRIVER_NL80211_QCA */
9475         .configure_data_frame_filters = nl80211_configure_data_frame_filters,
9476         .get_ext_capab = nl80211_get_ext_capab,
9477 };