src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This software may be distributed under the terms of the BSD license.
  10  * See README for more details.
  11  */
  12
  13 #include "includes.h"
  14 #include <sys/types.h>
  15 #include <fcntl.h>
  16 #include <net/if.h>
  17 #include <netlink/genl/genl.h>
  18 #include <netlink/genl/ctrl.h>
  19 #ifdef CONFIG_LIBNL3_ROUTE
  20 #include <netlink/route/neighbour.h>
  21 #endif /* CONFIG_LIBNL3_ROUTE */
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/errqueue.h>
  25
  26 #include "common.h"
  27 #include "eloop.h"
  28 #include "common/qca-vendor.h"
  29 #include "common/qca-vendor-attr.h"
  30 #include "common/ieee802_11_defs.h"
  31 #include "common/ieee802_11_common.h"
  32 #include "l2_packet/l2_packet.h"
  33 #include "netlink.h"
  34 #include "linux_defines.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver_nl80211.h"
  40
  41
  42 #ifndef CONFIG_LIBNL20
  43 /*
  44  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  45  * but when you free a socket again it will mess up its bitmap and
  46  * and use the wrong number the next time it needs a socket ID.
  47  * Therefore, we wrap the handle alloc/destroy and add our own pid
  48  * accounting.
  49  */
  50 static uint32_t port_bitmap[32] = { 0 };
  51
  52 static struct nl_handle *nl80211_handle_alloc(void *cb)
  53 {
  54         struct nl_handle *handle;
  55         uint32_t pid = getpid() & 0x3FFFFF;
  56         int i;
  57
  58         handle = nl_handle_alloc_cb(cb);
  59
  60         for (i = 0; i < 1024; i++) {
  61                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  62                         continue;
  63                 port_bitmap[i / 32] |= 1 << (i % 32);
  64                 pid += i << 22;
  65                 break;
  66         }
  67
  68         nl_socket_set_local_port(handle, pid);
  69
  70         return handle;
  71 }
  72
  73 static void nl80211_handle_destroy(struct nl_handle *handle)
  74 {
  75         uint32_t port = nl_socket_get_local_port(handle);
  76
  77         port >>= 22;
  78         port_bitmap[port / 32] &= ~(1 << (port % 32));
  79
  80         nl_handle_destroy(handle);
  81 }
  82 #endif /* CONFIG_LIBNL20 */
  83
  84
  85 #ifdef ANDROID
  86 /* system/core/libnl_2 does not include nl_socket_set_nonblocking() */
  87 #undef nl_socket_set_nonblocking
  88 #define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h)
  89
  90 #define genl_ctrl_resolve android_genl_ctrl_resolve
  91 #endif /* ANDROID */
  92
  93
  94 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
  95 {
  96         struct nl_handle *handle;
  97
  98         handle = nl80211_handle_alloc(cb);
  99         if (handle == NULL) {
 100                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 101                            "callbacks (%s)", dbg);
 102                 return NULL;
 103         }
 104
 105         if (genl_connect(handle)) {
 106                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 107                            "netlink (%s)", dbg);
 108                 nl80211_handle_destroy(handle);
 109                 return NULL;
 110         }
 111
 112         return handle;
 113 }
 114
 115
 116 static void nl_destroy_handles(struct nl_handle **handle)
 117 {
 118         if (*handle == NULL)
 119                 return;
 120         nl80211_handle_destroy(*handle);
 121         *handle = NULL;
 122 }
 123
 124
 125 #if __WORDSIZE == 64
 126 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x8888888888888889ULL
 127 #else
 128 #define ELOOP_SOCKET_INVALID    (intptr_t) 0x88888889ULL
 129 #endif
 130
 131 static void nl80211_register_eloop_read(struct nl_handle **handle,
 132                                         eloop_sock_handler handler,
 133                                         void *eloop_data)
 134 {
 135         nl_socket_set_nonblocking(*handle);
 136         eloop_register_read_sock(nl_socket_get_fd(*handle), handler,
 137                                  eloop_data, *handle);
 138         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 139 }
 140
 141
 142 static void nl80211_destroy_eloop_handle(struct nl_handle **handle)
 143 {
 144         *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID);
 145         eloop_unregister_read_sock(nl_socket_get_fd(*handle));
 146         nl_destroy_handles(handle);
 147 }
 148
 149
 150 static void nl80211_global_deinit(void *priv);
 151
 152 static void wpa_driver_nl80211_deinit(struct i802_bss *bss);
 153 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
 154                                             struct hostapd_freq_params *freq);
 155
 156 static int
 157 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
 158                                    const u8 *set_addr, int first,
 159                                    const char *driver_params);
 160 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 161                                   unsigned int freq, unsigned int wait,
 162                                   const u8 *buf, size_t buf_len, u64 *cookie,
 163                                   int no_cck, int no_ack, int offchanok);
 164 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss,
 165                                                int report);
 166
 167 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 168 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 169 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 170
 171 static int nl80211_set_channel(struct i802_bss *bss,
 172                                struct hostapd_freq_params *freq, int set_chan);
 173 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 174                                      int ifindex, int disabled);
 175
 176 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
 177                               int reset_mode);
 178
 179 static int i802_set_iface_flags(struct i802_bss *bss, int up);
 180 static int nl80211_set_param(void *priv, const char *param);
 181
 182
 183 /* Converts nl80211_chan_width to a common format */
 184 enum chan_width convert2width(int width)
 185 {
 186         switch (width) {
 187         case NL80211_CHAN_WIDTH_20_NOHT:
 188                 return CHAN_WIDTH_20_NOHT;
 189         case NL80211_CHAN_WIDTH_20:
 190                 return CHAN_WIDTH_20;
 191         case NL80211_CHAN_WIDTH_40:
 192                 return CHAN_WIDTH_40;
 193         case NL80211_CHAN_WIDTH_80:
 194                 return CHAN_WIDTH_80;
 195         case NL80211_CHAN_WIDTH_80P80:
 196                 return CHAN_WIDTH_80P80;
 197         case NL80211_CHAN_WIDTH_160:
 198                 return CHAN_WIDTH_160;
 199         }
 200         return CHAN_WIDTH_UNKNOWN;
 201 }
 202
 203
 204 int is_ap_interface(enum nl80211_iftype nlmode)
 205 {
 206         return nlmode == NL80211_IFTYPE_AP ||
 207                 nlmode == NL80211_IFTYPE_P2P_GO;
 208 }
 209
 210
 211 int is_sta_interface(enum nl80211_iftype nlmode)
 212 {
 213         return nlmode == NL80211_IFTYPE_STATION ||
 214                 nlmode == NL80211_IFTYPE_P2P_CLIENT;
 215 }
 216
 217
 218 static int is_p2p_net_interface(enum nl80211_iftype nlmode)
 219 {
 220         return nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 221                 nlmode == NL80211_IFTYPE_P2P_GO;
 222 }
 223
 224
 225 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
 226                                   int ifindex)
 227 {
 228         struct i802_bss *bss;
 229
 230         for (bss = drv->first_bss; bss; bss = bss->next) {
 231                 if (bss->ifindex == ifindex)
 232                         return bss;
 233         }
 234
 235         return NULL;
 236 }
 237
 238
 239 static int is_mesh_interface(enum nl80211_iftype nlmode)
 240 {
 241         return nlmode == NL80211_IFTYPE_MESH_POINT;
 242 }
 243
 244
 245 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv)
 246 {
 247         if (drv->associated)
 248                 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN);
 249         drv->associated = 0;
 250         os_memset(drv->bssid, 0, ETH_ALEN);
 251 }
 252
 253
 254 /* nl80211 code */
 255 static int ack_handler(struct nl_msg *msg, void *arg)
 256 {
 257         int *err = arg;
 258         *err = 0;
 259         return NL_STOP;
 260 }
 261
 262 static int finish_handler(struct nl_msg *msg, void *arg)
 263 {
 264         int *ret = arg;
 265         *ret = 0;
 266         return NL_SKIP;
 267 }
 268
 269 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 270                          void *arg)
 271 {
 272         int *ret = arg;
 273         *ret = err->error;
 274         return NL_SKIP;
 275 }
 276
 277
 278 static int no_seq_check(struct nl_msg *msg, void *arg)
 279 {
 280         return NL_OK;
 281 }
 282
 283
 284 static void nl80211_nlmsg_clear(struct nl_msg *msg)
 285 {
 286         /*
 287          * Clear nlmsg data, e.g., to make sure key material is not left in
 288          * heap memory for unnecessarily long time.
 289          */
 290         if (msg) {
 291                 struct nlmsghdr *hdr = nlmsg_hdr(msg);
 292                 void *data = nlmsg_data(hdr);
 293                 /*
 294                  * This would use nlmsg_datalen() or the older nlmsg_len() if
 295                  * only libnl were to maintain a stable API.. Neither will work
 296                  * with all released versions, so just calculate the length
 297                  * here.
 298                  */
 299                 int len = hdr->nlmsg_len - NLMSG_HDRLEN;
 300
 301                 os_memset(data, 0, len);
 302         }
 303 }
 304
 305
 306 static int send_and_recv(struct nl80211_global *global,
 307                          struct nl_handle *nl_handle, struct nl_msg *msg,
 308                          int (*valid_handler)(struct nl_msg *, void *),
 309                          void *valid_data)
 310 {
 311         struct nl_cb *cb;
 312         int err = -ENOMEM;
 313
 314         if (!msg)
 315                 return -ENOMEM;
 316
 317         cb = nl_cb_clone(global->nl_cb);
 318         if (!cb)
 319                 goto out;
 320
 321         err = nl_send_auto_complete(nl_handle, msg);
 322         if (err < 0)
 323                 goto out;
 324
 325         err = 1;
 326
 327         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 328         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 329         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 330
 331         if (valid_handler)
 332                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 333                           valid_handler, valid_data);
 334
 335         while (err > 0) {
 336                 int res = nl_recvmsgs(nl_handle, cb);
 337                 if (res < 0) {
 338                         wpa_printf(MSG_INFO,
 339                                    "nl80211: %s->nl_recvmsgs failed: %d",
 340                                    __func__, res);
 341                 }
 342         }
 343  out:
 344         nl_cb_put(cb);
 345         if (!valid_handler && valid_data == (void *) -1)
 346                 nl80211_nlmsg_clear(msg);
 347         nlmsg_free(msg);
 348         return err;
 349 }
 350
 351
 352 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 353                        struct nl_msg *msg,
 354                        int (*valid_handler)(struct nl_msg *, void *),
 355                        void *valid_data)
 356 {
 357         return send_and_recv(drv->global, drv->global->nl, msg,
 358                              valid_handler, valid_data);
 359 }
 360
 361
 362 struct family_data {
 363         const char *group;
 364         int id;
 365 };
 366
 367
 368 static int family_handler(struct nl_msg *msg, void *arg)
 369 {
 370         struct family_data *res = arg;
 371         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 372         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 373         struct nlattr *mcgrp;
 374         int i;
 375
 376         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 377                   genlmsg_attrlen(gnlh, 0), NULL);
 378         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 379                 return NL_SKIP;
 380
 381         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 382                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 383                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 384                           nla_len(mcgrp), NULL);
 385                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 386                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 387                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 388                                res->group,
 389                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 390                         continue;
 391                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 392                 break;
 393         };
 394
 395         return NL_SKIP;
 396 }
 397
 398
 399 static int nl_get_multicast_id(struct nl80211_global *global,
 400                                const char *family, const char *group)
 401 {
 402         struct nl_msg *msg;
 403         int ret;
 404         struct family_data res = { group, -ENOENT };
 405
 406         msg = nlmsg_alloc();
 407         if (!msg)
 408                 return -ENOMEM;
 409         if (!genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 410                          0, 0, CTRL_CMD_GETFAMILY, 0) ||
 411             nla_put_string(msg, CTRL_ATTR_FAMILY_NAME, family)) {
 412                 nlmsg_free(msg);
 413                 return -1;
 414         }
 415
 416         ret = send_and_recv(global, global->nl, msg, family_handler, &res);
 417         if (ret == 0)
 418                 ret = res.id;
 419         return ret;
 420 }
 421
 422
 423 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 424                    struct nl_msg *msg, int flags, uint8_t cmd)
 425 {
 426         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 427                            0, flags, cmd, 0);
 428 }
 429
 430
 431 static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss)
 432 {
 433         if (bss->wdev_id_set)
 434                 return nla_put_u64(msg, NL80211_ATTR_WDEV, bss->wdev_id);
 435         return nla_put_u32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 436 }
 437
 438
 439 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 440 {
 441         struct nl_msg *msg;
 442
 443         msg = nlmsg_alloc();
 444         if (!msg)
 445                 return NULL;
 446
 447         if (!nl80211_cmd(bss->drv, msg, flags, cmd) ||
 448             nl80211_set_iface_id(msg, bss) < 0) {
 449                 nlmsg_free(msg);
 450                 return NULL;
 451         }
 452
 453         return msg;
 454 }
 455
 456
 457 static struct nl_msg *
 458 nl80211_ifindex_msg(struct wpa_driver_nl80211_data *drv, int ifindex,
 459                     int flags, uint8_t cmd)
 460 {
 461         struct nl_msg *msg;
 462
 463         msg = nlmsg_alloc();
 464         if (!msg)
 465                 return NULL;
 466
 467         if (!nl80211_cmd(drv, msg, flags, cmd) ||
 468             nla_put_u32(msg, NL80211_ATTR_IFINDEX, ifindex)) {
 469                 nlmsg_free(msg);
 470                 return NULL;
 471         }
 472
 473         return msg;
 474 }
 475
 476
 477 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
 478                                 uint8_t cmd)
 479 {
 480         return nl80211_ifindex_msg(drv, drv->ifindex, flags, cmd);
 481 }
 482
 483
 484 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd)
 485 {
 486         return nl80211_ifindex_msg(bss->drv, bss->ifindex, flags, cmd);
 487 }
 488
 489
 490 struct wiphy_idx_data {
 491         int wiphy_idx;
 492         enum nl80211_iftype nlmode;
 493         u8 *macaddr;
 494 };
 495
 496
 497 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 498 {
 499         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 500         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 501         struct wiphy_idx_data *info = arg;
 502
 503         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 504                   genlmsg_attrlen(gnlh, 0), NULL);
 505
 506         if (tb[NL80211_ATTR_WIPHY])
 507                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 508
 509         if (tb[NL80211_ATTR_IFTYPE])
 510                 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]);
 511
 512         if (tb[NL80211_ATTR_MAC] && info->macaddr)
 513                 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
 514                           ETH_ALEN);
 515
 516         return NL_SKIP;
 517 }
 518
 519
 520 int nl80211_get_wiphy_index(struct i802_bss *bss)
 521 {
 522         struct nl_msg *msg;
 523         struct wiphy_idx_data data = {
 524                 .wiphy_idx = -1,
 525                 .macaddr = NULL,
 526         };
 527
 528         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 529                 return -1;
 530
 531         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 532                 return data.wiphy_idx;
 533         return -1;
 534 }
 535
 536
 537 static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss)
 538 {
 539         struct nl_msg *msg;
 540         struct wiphy_idx_data data = {
 541                 .nlmode = NL80211_IFTYPE_UNSPECIFIED,
 542                 .macaddr = NULL,
 543         };
 544
 545         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 546                 return NL80211_IFTYPE_UNSPECIFIED;
 547
 548         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 549                 return data.nlmode;
 550         return NL80211_IFTYPE_UNSPECIFIED;
 551 }
 552
 553
 554 static int nl80211_get_macaddr(struct i802_bss *bss)
 555 {
 556         struct nl_msg *msg;
 557         struct wiphy_idx_data data = {
 558                 .macaddr = bss->addr,
 559         };
 560
 561         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_GET_INTERFACE)))
 562                 return -1;
 563
 564         return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data);
 565 }
 566
 567
 568 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 569                                     struct nl80211_wiphy_data *w)
 570 {
 571         struct nl_msg *msg;
 572         int ret;
 573
 574         msg = nlmsg_alloc();
 575         if (!msg)
 576                 return -1;
 577
 578         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS) ||
 579             nla_put_u32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx)) {
 580                 nlmsg_free(msg);
 581                 return -1;
 582         }
 583
 584         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 585         if (ret) {
 586                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 587                            "failed: ret=%d (%s)",
 588                            ret, strerror(-ret));
 589         }
 590         return ret;
 591 }
 592
 593
 594 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 595 {
 596         struct nl80211_wiphy_data *w = eloop_ctx;
 597         int res;
 598
 599         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 600
 601         res = nl_recvmsgs(handle, w->nl_cb);
 602         if (res < 0) {
 603                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
 604                            __func__, res);
 605         }
 606 }
 607
 608
 609 static int process_beacon_event(struct nl_msg *msg, void *arg)
 610 {
 611         struct nl80211_wiphy_data *w = arg;
 612         struct wpa_driver_nl80211_data *drv;
 613         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 614         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 615         union wpa_event_data event;
 616
 617         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 618                   genlmsg_attrlen(gnlh, 0), NULL);
 619
 620         if (gnlh->cmd != NL80211_CMD_FRAME) {
 621                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 622                            gnlh->cmd);
 623                 return NL_SKIP;
 624         }
 625
 626         if (!tb[NL80211_ATTR_FRAME])
 627                 return NL_SKIP;
 628
 629         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 630                          wiphy_list) {
 631                 os_memset(&event, 0, sizeof(event));
 632                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 633                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 634                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 635         }
 636
 637         return NL_SKIP;
 638 }
 639
 640
 641 static struct nl80211_wiphy_data *
 642 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 643 {
 644         static DEFINE_DL_LIST(nl80211_wiphys);
 645         struct nl80211_wiphy_data *w;
 646         int wiphy_idx, found = 0;
 647         struct i802_bss *tmp_bss;
 648
 649         if (bss->wiphy_data != NULL)
 650                 return bss->wiphy_data;
 651
 652         wiphy_idx = nl80211_get_wiphy_index(bss);
 653
 654         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 655                 if (w->wiphy_idx == wiphy_idx)
 656                         goto add;
 657         }
 658
 659         /* alloc new one */
 660         w = os_zalloc(sizeof(*w));
 661         if (w == NULL)
 662                 return NULL;
 663         w->wiphy_idx = wiphy_idx;
 664         dl_list_init(&w->bsss);
 665         dl_list_init(&w->drvs);
 666
 667         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 668         if (!w->nl_cb) {
 669                 os_free(w);
 670                 return NULL;
 671         }
 672         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 673         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 674                   w);
 675
 676         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 677                                          "wiphy beacons");
 678         if (w->nl_beacons == NULL) {
 679                 os_free(w);
 680                 return NULL;
 681         }
 682
 683         if (nl80211_register_beacons(bss->drv, w)) {
 684                 nl_destroy_handles(&w->nl_beacons);
 685                 os_free(w);
 686                 return NULL;
 687         }
 688
 689         nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w);
 690
 691         dl_list_add(&nl80211_wiphys, &w->list);
 692
 693 add:
 694         /* drv entry for this bss already there? */
 695         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 696                 if (tmp_bss->drv == bss->drv) {
 697                         found = 1;
 698                         break;
 699                 }
 700         }
 701         /* if not add it */
 702         if (!found)
 703                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 704
 705         dl_list_add(&w->bsss, &bss->wiphy_list);
 706         bss->wiphy_data = w;
 707         return w;
 708 }
 709
 710
 711 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 712 {
 713         struct nl80211_wiphy_data *w = bss->wiphy_data;
 714         struct i802_bss *tmp_bss;
 715         int found = 0;
 716
 717         if (w == NULL)
 718                 return;
 719         bss->wiphy_data = NULL;
 720         dl_list_del(&bss->wiphy_list);
 721
 722         /* still any for this drv present? */
 723         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 724                 if (tmp_bss->drv == bss->drv) {
 725                         found = 1;
 726                         break;
 727                 }
 728         }
 729         /* if not remove it */
 730         if (!found)
 731                 dl_list_del(&bss->drv->wiphy_list);
 732
 733         if (!dl_list_empty(&w->bsss))
 734                 return;
 735
 736         nl80211_destroy_eloop_handle(&w->nl_beacons);
 737
 738         nl_cb_put(w->nl_cb);
 739         dl_list_del(&w->list);
 740         os_free(w);
 741 }
 742
 743
 744 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 745 {
 746         struct i802_bss *bss = priv;
 747         struct wpa_driver_nl80211_data *drv = bss->drv;
 748         if (!drv->associated)
 749                 return -1;
 750         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 751         return 0;
 752 }
 753
 754
 755 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 756 {
 757         struct i802_bss *bss = priv;
 758         struct wpa_driver_nl80211_data *drv = bss->drv;
 759         if (!drv->associated)
 760                 return -1;
 761         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 762         return drv->ssid_len;
 763 }
 764
 765
 766 static void wpa_driver_nl80211_event_newlink(
 767         struct wpa_driver_nl80211_data *drv, const char *ifname)
 768 {
 769         union wpa_event_data event;
 770
 771         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 772                 if (if_nametoindex(drv->first_bss->ifname) == 0) {
 773                         wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK",
 774                                    drv->first_bss->ifname);
 775                         return;
 776                 }
 777                 if (!drv->if_removed)
 778                         return;
 779                 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event",
 780                            drv->first_bss->ifname);
 781                 drv->if_removed = 0;
 782         }
 783
 784         os_memset(&event, 0, sizeof(event));
 785         os_strlcpy(event.interface_status.ifname, ifname,
 786                    sizeof(event.interface_status.ifname));
 787         event.interface_status.ievent = EVENT_INTERFACE_ADDED;
 788         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 789 }
 790
 791
 792 static void wpa_driver_nl80211_event_dellink(
 793         struct wpa_driver_nl80211_data *drv, const char *ifname)
 794 {
 795         union wpa_event_data event;
 796
 797         if (os_strcmp(drv->first_bss->ifname, ifname) == 0) {
 798                 if (drv->if_removed) {
 799                         wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s",
 800                                    ifname);
 801                         return;
 802                 }
 803                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1",
 804                            ifname);
 805                 drv->if_removed = 1;
 806         } else {
 807                 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed",
 808                            ifname);
 809         }
 810
 811         os_memset(&event, 0, sizeof(event));
 812         os_strlcpy(event.interface_status.ifname, ifname,
 813                    sizeof(event.interface_status.ifname));
 814         event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
 815         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 816 }
 817
 818
 819 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 820                                          u8 *buf, size_t len)
 821 {
 822         int attrlen, rta_len;
 823         struct rtattr *attr;
 824
 825         attrlen = len;
 826         attr = (struct rtattr *) buf;
 827
 828         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 829         while (RTA_OK(attr, attrlen)) {
 830                 if (attr->rta_type == IFLA_IFNAME) {
 831                         if (os_strcmp(((char *) attr) + rta_len,
 832                                       drv->first_bss->ifname) == 0)
 833                                 return 1;
 834                         else
 835                                 break;
 836                 }
 837                 attr = RTA_NEXT(attr, attrlen);
 838         }
 839
 840         return 0;
 841 }
 842
 843
 844 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 845                                           int ifindex, u8 *buf, size_t len)
 846 {
 847         if (drv->ifindex == ifindex)
 848                 return 1;
 849
 850         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 851                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 852                            "interface");
 853                 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0, NULL);
 854                 return 1;
 855         }
 856
 857         return 0;
 858 }
 859
 860
 861 static struct wpa_driver_nl80211_data *
 862 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 863 {
 864         struct wpa_driver_nl80211_data *drv;
 865         dl_list_for_each(drv, &global->interfaces,
 866                          struct wpa_driver_nl80211_data, list) {
 867                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 868                     have_ifidx(drv, idx))
 869                         return drv;
 870         }
 871         return NULL;
 872 }
 873
 874
 875 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 876                                                  struct ifinfomsg *ifi,
 877                                                  u8 *buf, size_t len)
 878 {
 879         struct nl80211_global *global = ctx;
 880         struct wpa_driver_nl80211_data *drv;
 881         int attrlen;
 882         struct rtattr *attr;
 883         u32 brid = 0;
 884         char namebuf[IFNAMSIZ];
 885         char ifname[IFNAMSIZ + 1];
 886         char extra[100], *pos, *end;
 887
 888         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 889         if (!drv) {
 890                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d",
 891                            ifi->ifi_index);
 892                 return;
 893         }
 894
 895         extra[0] = '\0';
 896         pos = extra;
 897         end = pos + sizeof(extra);
 898         ifname[0] = '\0';
 899
 900         attrlen = len;
 901         attr = (struct rtattr *) buf;
 902         while (RTA_OK(attr, attrlen)) {
 903                 switch (attr->rta_type) {
 904                 case IFLA_IFNAME:
 905                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
 906                                 break;
 907                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
 908                         ifname[RTA_PAYLOAD(attr)] = '\0';
 909                         break;
 910                 case IFLA_MASTER:
 911                         brid = nla_get_u32((struct nlattr *) attr);
 912                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
 913                         break;
 914                 case IFLA_WIRELESS:
 915                         pos += os_snprintf(pos, end - pos, " wext");
 916                         break;
 917                 case IFLA_OPERSTATE:
 918                         pos += os_snprintf(pos, end - pos, " operstate=%u",
 919                                            nla_get_u32((struct nlattr *) attr));
 920                         break;
 921                 case IFLA_LINKMODE:
 922                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
 923                                            nla_get_u32((struct nlattr *) attr));
 924                         break;
 925                 }
 926                 attr = RTA_NEXT(attr, attrlen);
 927         }
 928         extra[sizeof(extra) - 1] = '\0';
 929
 930         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
 931                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
 932                    ifi->ifi_flags,
 933                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 934                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 935                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 936                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 937
 938         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 939                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 940                     linux_iface_up(drv->global->ioctl_sock,
 941                                    drv->first_bss->ifname) > 0) {
 942                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 943                                    "event since interface %s is up", namebuf);
 944                         drv->ignore_if_down_event = 0;
 945                         return;
 946                 }
 947                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 948                 if (drv->ignore_if_down_event) {
 949                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 950                                    "event generated by mode change");
 951                         drv->ignore_if_down_event = 0;
 952                 } else {
 953                         drv->if_disabled = 1;
 954                         wpa_supplicant_event(drv->ctx,
 955                                              EVENT_INTERFACE_DISABLED, NULL);
 956
 957                         /*
 958                          * Try to get drv again, since it may be removed as
 959                          * part of the EVENT_INTERFACE_DISABLED handling for
 960                          * dynamic interfaces
 961                          */
 962                         drv = nl80211_find_drv(global, ifi->ifi_index,
 963                                                buf, len);
 964                         if (!drv)
 965                                 return;
 966                 }
 967         }
 968
 969         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 970                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 971                     linux_iface_up(drv->global->ioctl_sock,
 972                                    drv->first_bss->ifname) == 0) {
 973                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 974                                    "event since interface %s is down",
 975                                    namebuf);
 976                 } else if (if_nametoindex(drv->first_bss->ifname) == 0) {
 977                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 978                                    "event since interface %s does not exist",
 979                                    drv->first_bss->ifname);
 980                 } else if (drv->if_removed) {
 981                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 982                                    "event since interface %s is marked "
 983                                    "removed", drv->first_bss->ifname);
 984                 } else {
 985                         struct i802_bss *bss;
 986                         u8 addr[ETH_ALEN];
 987
 988                         /* Re-read MAC address as it may have changed */
 989                         bss = get_bss_ifindex(drv, ifi->ifi_index);
 990                         if (bss &&
 991                             linux_get_ifhwaddr(drv->global->ioctl_sock,
 992                                                bss->ifname, addr) < 0) {
 993                                 wpa_printf(MSG_DEBUG,
 994                                            "nl80211: %s: failed to re-read MAC address",
 995                                            bss->ifname);
 996                         } else if (bss &&
 997                                    os_memcmp(addr, bss->addr, ETH_ALEN) != 0) {
 998                                 wpa_printf(MSG_DEBUG,
 999                                            "nl80211: Own MAC address on ifindex %d (%s) changed from "
1000                                            MACSTR " to " MACSTR,
1001                                            ifi->ifi_index, bss->ifname,
1002                                            MAC2STR(bss->addr),
1003                                            MAC2STR(addr));
1004                                 os_memcpy(bss->addr, addr, ETH_ALEN);
1005                         }
1006
1007                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
1008                         drv->if_disabled = 0;
1009                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1010                                              NULL);
1011                 }
1012         }
1013
1014         /*
1015          * Some drivers send the association event before the operup event--in
1016          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
1017          * fails. This will hit us when wpa_supplicant does not need to do
1018          * IEEE 802.1X authentication
1019          */
1020         if (drv->operstate == 1 &&
1021             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
1022             !(ifi->ifi_flags & IFF_RUNNING)) {
1023                 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate");
1024                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
1025                                        -1, IF_OPER_UP);
1026         }
1027
1028         if (ifname[0])
1029                 wpa_driver_nl80211_event_newlink(drv, ifname);
1030
1031         if (ifi->ifi_family == AF_BRIDGE && brid) {
1032                 struct i802_bss *bss;
1033
1034                 /* device has been added to bridge */
1035                 if (!if_indextoname(brid, namebuf)) {
1036                         wpa_printf(MSG_DEBUG,
1037                                    "nl80211: Could not find bridge ifname for ifindex %u",
1038                                    brid);
1039                         return;
1040                 }
1041                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
1042                            brid, namebuf);
1043                 add_ifidx(drv, brid);
1044
1045                 for (bss = drv->first_bss; bss; bss = bss->next) {
1046                         if (os_strcmp(ifname, bss->ifname) == 0) {
1047                                 os_strlcpy(bss->brname, namebuf, IFNAMSIZ);
1048                                 break;
1049                         }
1050                 }
1051         }
1052 }
1053
1054
1055 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
1056                                                  struct ifinfomsg *ifi,
1057                                                  u8 *buf, size_t len)
1058 {
1059         struct nl80211_global *global = ctx;
1060         struct wpa_driver_nl80211_data *drv;
1061         int attrlen;
1062         struct rtattr *attr;
1063         u32 brid = 0;
1064         char ifname[IFNAMSIZ + 1];
1065         char extra[100], *pos, *end;
1066
1067         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1068         if (!drv) {
1069                 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d",
1070                            ifi->ifi_index);
1071                 return;
1072         }
1073
1074         extra[0] = '\0';
1075         pos = extra;
1076         end = pos + sizeof(extra);
1077         ifname[0] = '\0';
1078
1079         attrlen = len;
1080         attr = (struct rtattr *) buf;
1081         while (RTA_OK(attr, attrlen)) {
1082                 switch (attr->rta_type) {
1083                 case IFLA_IFNAME:
1084                         if (RTA_PAYLOAD(attr) >= IFNAMSIZ)
1085                                 break;
1086                         os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr));
1087                         ifname[RTA_PAYLOAD(attr)] = '\0';
1088                         break;
1089                 case IFLA_MASTER:
1090                         brid = nla_get_u32((struct nlattr *) attr);
1091                         pos += os_snprintf(pos, end - pos, " master=%u", brid);
1092                         break;
1093                 case IFLA_OPERSTATE:
1094                         pos += os_snprintf(pos, end - pos, " operstate=%u",
1095                                            nla_get_u32((struct nlattr *) attr));
1096                         break;
1097                 case IFLA_LINKMODE:
1098                         pos += os_snprintf(pos, end - pos, " linkmode=%u",
1099                                            nla_get_u32((struct nlattr *) attr));
1100                         break;
1101                 }
1102                 attr = RTA_NEXT(attr, attrlen);
1103         }
1104         extra[sizeof(extra) - 1] = '\0';
1105
1106         wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
1107                    ifi->ifi_index, ifname, extra, ifi->ifi_family,
1108                    ifi->ifi_flags,
1109                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
1110                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
1111                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
1112                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
1113
1114         if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid))
1115                 wpa_driver_nl80211_event_dellink(drv, ifname);
1116
1117         if (ifi->ifi_family == AF_BRIDGE && brid) {
1118                 /* device has been removed from bridge */
1119                 char namebuf[IFNAMSIZ];
1120
1121                 if (!if_indextoname(brid, namebuf)) {
1122                         wpa_printf(MSG_DEBUG,
1123                                    "nl80211: Could not find bridge ifname for ifindex %u",
1124                                    brid);
1125                 } else {
1126                         wpa_printf(MSG_DEBUG,
1127                                    "nl80211: Remove ifindex %u for bridge %s",
1128                                    brid, namebuf);
1129                 }
1130                 del_ifidx(drv, brid);
1131         }
1132 }
1133
1134
1135 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1136 {
1137         struct nl_msg *msg;
1138         int ret;
1139         struct nl80211_bss_info_arg arg;
1140
1141         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1142         os_memset(&arg, 0, sizeof(arg));
1143         arg.drv = drv;
1144         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1145         if (ret == 0) {
1146                 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ?
1147                         arg.ibss_freq : arg.assoc_freq;
1148                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1149                            "associated BSS from scan results: %u MHz", freq);
1150                 if (freq)
1151                         drv->assoc_freq = freq;
1152                 return drv->assoc_freq;
1153         }
1154         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1155                    "(%s)", ret, strerror(-ret));
1156         return drv->assoc_freq;
1157 }
1158
1159
1160 static int get_link_signal(struct nl_msg *msg, void *arg)
1161 {
1162         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1163         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1164         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1165         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1166                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1167                 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 },
1168         };
1169         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1170         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1171                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1172                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1173                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1174                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1175         };
1176         struct wpa_signal_info *sig_change = arg;
1177
1178         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1179                   genlmsg_attrlen(gnlh, 0), NULL);
1180         if (!tb[NL80211_ATTR_STA_INFO] ||
1181             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1182                              tb[NL80211_ATTR_STA_INFO], policy))
1183                 return NL_SKIP;
1184         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1185                 return NL_SKIP;
1186
1187         sig_change->current_signal =
1188                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1189
1190         if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
1191                 sig_change->avg_signal =
1192                         (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]);
1193         else
1194                 sig_change->avg_signal = 0;
1195
1196         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1197                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1198                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1199                                      rate_policy)) {
1200                         sig_change->current_txrate = 0;
1201                 } else {
1202                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1203                                 sig_change->current_txrate =
1204                                         nla_get_u16(rinfo[
1205                                              NL80211_RATE_INFO_BITRATE]) * 100;
1206                         }
1207                 }
1208         }
1209
1210         return NL_SKIP;
1211 }
1212
1213
1214 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1215                             struct wpa_signal_info *sig)
1216 {
1217         struct nl_msg *msg;
1218
1219         sig->current_signal = -9999;
1220         sig->current_txrate = 0;
1221
1222         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_STATION)) ||
1223             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid)) {
1224                 nlmsg_free(msg);
1225                 return -ENOBUFS;
1226         }
1227
1228         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1229 }
1230
1231
1232 static int get_link_noise(struct nl_msg *msg, void *arg)
1233 {
1234         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1235         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1236         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1237         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1238                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1239                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1240         };
1241         struct wpa_signal_info *sig_change = arg;
1242
1243         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1244                   genlmsg_attrlen(gnlh, 0), NULL);
1245
1246         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1247                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1248                 return NL_SKIP;
1249         }
1250
1251         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1252                              tb[NL80211_ATTR_SURVEY_INFO],
1253                              survey_policy)) {
1254                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1255                            "attributes!");
1256                 return NL_SKIP;
1257         }
1258
1259         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1260                 return NL_SKIP;
1261
1262         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1263             sig_change->frequency)
1264                 return NL_SKIP;
1265
1266         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1267                 return NL_SKIP;
1268
1269         sig_change->current_noise =
1270                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1271
1272         return NL_SKIP;
1273 }
1274
1275
1276 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1277                            struct wpa_signal_info *sig_change)
1278 {
1279         struct nl_msg *msg;
1280
1281         sig_change->current_noise = 9999;
1282         sig_change->frequency = drv->assoc_freq;
1283
1284         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1285         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1286 }
1287
1288
1289 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1290                                              void *handle)
1291 {
1292         struct nl_cb *cb = eloop_ctx;
1293         int res;
1294
1295         wpa_printf(MSG_MSGDUMP, "nl80211: Event message available");
1296
1297         res = nl_recvmsgs(handle, cb);
1298         if (res < 0) {
1299                 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d",
1300                            __func__, res);
1301         }
1302 }
1303
1304
1305 /**
1306  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1307  * @priv: driver_nl80211 private data
1308  * @alpha2_arg: country to which to switch to
1309  * Returns: 0 on success, -1 on failure
1310  *
1311  * This asks nl80211 to set the regulatory domain for given
1312  * country ISO / IEC alpha2.
1313  */
1314 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1315 {
1316         struct i802_bss *bss = priv;
1317         struct wpa_driver_nl80211_data *drv = bss->drv;
1318         char alpha2[3];
1319         struct nl_msg *msg;
1320
1321         msg = nlmsg_alloc();
1322         if (!msg)
1323                 return -ENOMEM;
1324
1325         alpha2[0] = alpha2_arg[0];
1326         alpha2[1] = alpha2_arg[1];
1327         alpha2[2] = '\0';
1328
1329         if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG) ||
1330             nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, alpha2)) {
1331                 nlmsg_free(msg);
1332                 return -EINVAL;
1333         }
1334         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1335                 return -EINVAL;
1336         return 0;
1337 }
1338
1339
1340 static int nl80211_get_country(struct nl_msg *msg, void *arg)
1341 {
1342         char *alpha2 = arg;
1343         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1344         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1345
1346         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1347                   genlmsg_attrlen(gnlh, 0), NULL);
1348         if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) {
1349                 wpa_printf(MSG_DEBUG, "nl80211: No country information available");
1350                 return NL_SKIP;
1351         }
1352         os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3);
1353         return NL_SKIP;
1354 }
1355
1356
1357 static int wpa_driver_nl80211_get_country(void *priv, char *alpha2)
1358 {
1359         struct i802_bss *bss = priv;
1360         struct wpa_driver_nl80211_data *drv = bss->drv;
1361         struct nl_msg *msg;
1362         int ret;
1363
1364         msg = nlmsg_alloc();
1365         if (!msg)
1366                 return -ENOMEM;
1367
1368         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1369         alpha2[0] = '\0';
1370         ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2);
1371         if (!alpha2[0])
1372                 ret = -1;
1373
1374         return ret;
1375 }
1376
1377
1378 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
1379 {
1380         int ret;
1381
1382         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1383         if (global->nl_cb == NULL) {
1384                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1385                            "callbacks");
1386                 return -1;
1387         }
1388
1389         global->nl = nl_create_handle(global->nl_cb, "nl");
1390         if (global->nl == NULL)
1391                 goto err;
1392
1393         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
1394         if (global->nl80211_id < 0) {
1395                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1396                            "found");
1397                 goto err;
1398         }
1399
1400         global->nl_event = nl_create_handle(global->nl_cb, "event");
1401         if (global->nl_event == NULL)
1402                 goto err;
1403
1404         ret = nl_get_multicast_id(global, "nl80211", "scan");
1405         if (ret >= 0)
1406                 ret = nl_socket_add_membership(global->nl_event, ret);
1407         if (ret < 0) {
1408                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1409                            "membership for scan events: %d (%s)",
1410                            ret, strerror(-ret));
1411                 goto err;
1412         }
1413
1414         ret = nl_get_multicast_id(global, "nl80211", "mlme");
1415         if (ret >= 0)
1416                 ret = nl_socket_add_membership(global->nl_event, ret);
1417         if (ret < 0) {
1418                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1419                            "membership for mlme events: %d (%s)",
1420                            ret, strerror(-ret));
1421                 goto err;
1422         }
1423
1424         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
1425         if (ret >= 0)
1426                 ret = nl_socket_add_membership(global->nl_event, ret);
1427         if (ret < 0) {
1428                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1429                            "membership for regulatory events: %d (%s)",
1430                            ret, strerror(-ret));
1431                 /* Continue without regulatory events */
1432         }
1433
1434         ret = nl_get_multicast_id(global, "nl80211", "vendor");
1435         if (ret >= 0)
1436                 ret = nl_socket_add_membership(global->nl_event, ret);
1437         if (ret < 0) {
1438                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1439                            "membership for vendor events: %d (%s)",
1440                            ret, strerror(-ret));
1441                 /* Continue without vendor events */
1442         }
1443
1444         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1445                   no_seq_check, NULL);
1446         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1447                   process_global_event, global);
1448
1449         nl80211_register_eloop_read(&global->nl_event,
1450                                     wpa_driver_nl80211_event_receive,
1451                                     global->nl_cb);
1452
1453         return 0;
1454
1455 err:
1456         nl_destroy_handles(&global->nl_event);
1457         nl_destroy_handles(&global->nl);
1458         nl_cb_put(global->nl_cb);
1459         global->nl_cb = NULL;
1460         return -1;
1461 }
1462
1463
1464 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1465 {
1466         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1467         /*
1468          * This may be for any interface; use ifdown event to disable
1469          * interface.
1470          */
1471 }
1472
1473
1474 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1475 {
1476         struct wpa_driver_nl80211_data *drv = ctx;
1477         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1478         if (i802_set_iface_flags(drv->first_bss, 1)) {
1479                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1480                            "after rfkill unblock");
1481                 return;
1482         }
1483         /* rtnetlink ifup handler will report interface as enabled */
1484 }
1485
1486
1487 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
1488                                                       void *eloop_ctx,
1489                                                       void *handle)
1490 {
1491         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1492         u8 data[2048];
1493         struct msghdr msg;
1494         struct iovec entry;
1495         u8 control[512];
1496         struct cmsghdr *cmsg;
1497         int res, found_ee = 0, found_wifi = 0, acked = 0;
1498         union wpa_event_data event;
1499
1500         memset(&msg, 0, sizeof(msg));
1501         msg.msg_iov = &entry;
1502         msg.msg_iovlen = 1;
1503         entry.iov_base = data;
1504         entry.iov_len = sizeof(data);
1505         msg.msg_control = &control;
1506         msg.msg_controllen = sizeof(control);
1507
1508         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
1509         /* if error or not fitting 802.3 header, return */
1510         if (res < 14)
1511                 return;
1512
1513         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
1514         {
1515                 if (cmsg->cmsg_level == SOL_SOCKET &&
1516                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
1517                         int *ack;
1518
1519                         found_wifi = 1;
1520                         ack = (void *)CMSG_DATA(cmsg);
1521                         acked = *ack;
1522                 }
1523
1524                 if (cmsg->cmsg_level == SOL_PACKET &&
1525                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
1526                         struct sock_extended_err *err =
1527                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
1528
1529                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
1530                                 found_ee = 1;
1531                 }
1532         }
1533
1534         if (!found_ee || !found_wifi)
1535                 return;
1536
1537         memset(&event, 0, sizeof(event));
1538         event.eapol_tx_status.dst = data;
1539         event.eapol_tx_status.data = data + 14;
1540         event.eapol_tx_status.data_len = res - 14;
1541         event.eapol_tx_status.ack = acked;
1542         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
1543 }
1544
1545
1546 static int nl80211_init_bss(struct i802_bss *bss)
1547 {
1548         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1549         if (!bss->nl_cb)
1550                 return -1;
1551
1552         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
1553                   no_seq_check, NULL);
1554         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
1555                   process_bss_event, bss);
1556
1557         return 0;
1558 }
1559
1560
1561 static void nl80211_destroy_bss(struct i802_bss *bss)
1562 {
1563         nl_cb_put(bss->nl_cb);
1564         bss->nl_cb = NULL;
1565 }
1566
1567
1568 static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname,
1569                                           void *global_priv, int hostapd,
1570                                           const u8 *set_addr,
1571                                           const char *driver_params)
1572 {
1573         struct wpa_driver_nl80211_data *drv;
1574         struct rfkill_config *rcfg;
1575         struct i802_bss *bss;
1576
1577         if (global_priv == NULL)
1578                 return NULL;
1579         drv = os_zalloc(sizeof(*drv));
1580         if (drv == NULL)
1581                 return NULL;
1582         drv->global = global_priv;
1583         drv->ctx = ctx;
1584         drv->hostapd = !!hostapd;
1585         drv->eapol_sock = -1;
1586
1587         /*
1588          * There is no driver capability flag for this, so assume it is
1589          * supported and disable this on first attempt to use if the driver
1590          * rejects the command due to missing support.
1591          */
1592         drv->set_rekey_offload = 1;
1593
1594         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
1595         drv->if_indices = drv->default_if_indices;
1596
1597         drv->first_bss = os_zalloc(sizeof(*drv->first_bss));
1598         if (!drv->first_bss) {
1599                 os_free(drv);
1600                 return NULL;
1601         }
1602         bss = drv->first_bss;
1603         bss->drv = drv;
1604         bss->ctx = ctx;
1605
1606         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1607         drv->monitor_ifidx = -1;
1608         drv->monitor_sock = -1;
1609         drv->eapol_tx_sock = -1;
1610         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
1611
1612         if (nl80211_init_bss(bss))
1613                 goto failed;
1614
1615         rcfg = os_zalloc(sizeof(*rcfg));
1616         if (rcfg == NULL)
1617                 goto failed;
1618         rcfg->ctx = drv;
1619         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1620         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1621         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1622         drv->rfkill = rfkill_init(rcfg);
1623         if (drv->rfkill == NULL) {
1624                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1625                 os_free(rcfg);
1626         }
1627
1628         if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0)
1629                 drv->start_iface_up = 1;
1630
1631         if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1, driver_params))
1632                 goto failed;
1633
1634         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
1635         if (drv->eapol_tx_sock < 0)
1636                 goto failed;
1637
1638         if (drv->data_tx_status) {
1639                 int enabled = 1;
1640
1641                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
1642                                &enabled, sizeof(enabled)) < 0) {
1643                         wpa_printf(MSG_DEBUG,
1644                                 "nl80211: wifi status sockopt failed\n");
1645                         drv->data_tx_status = 0;
1646                         if (!drv->use_monitor)
1647                                 drv->capa.flags &=
1648                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
1649                 } else {
1650                         eloop_register_read_sock(drv->eapol_tx_sock,
1651                                 wpa_driver_nl80211_handle_eapol_tx_status,
1652                                 drv, NULL);
1653                 }
1654         }
1655
1656         if (drv->global) {
1657                 dl_list_add(&drv->global->interfaces, &drv->list);
1658                 drv->in_interface_list = 1;
1659         }
1660
1661         return bss;
1662
1663 failed:
1664         wpa_driver_nl80211_deinit(bss);
1665         return NULL;
1666 }
1667
1668
1669 /**
1670  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1671  * @ctx: context to be used when calling wpa_supplicant functions,
1672  * e.g., wpa_supplicant_event()
1673  * @ifname: interface name, e.g., wlan0
1674  * @global_priv: private driver global data from global_init()
1675  * Returns: Pointer to private data, %NULL on failure
1676  */
1677 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
1678                                       void *global_priv)
1679 {
1680         return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL,
1681                                            NULL);
1682 }
1683
1684
1685 static int nl80211_register_frame(struct i802_bss *bss,
1686                                   struct nl_handle *nl_handle,
1687                                   u16 type, const u8 *match, size_t match_len)
1688 {
1689         struct wpa_driver_nl80211_data *drv = bss->drv;
1690         struct nl_msg *msg;
1691         int ret;
1692         char buf[30];
1693
1694         buf[0] = '\0';
1695         wpa_snprintf_hex(buf, sizeof(buf), match, match_len);
1696         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s",
1697                    type, fc2str(type), nl_handle, buf);
1698
1699         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REGISTER_ACTION)) ||
1700             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, type) ||
1701             nla_put(msg, NL80211_ATTR_FRAME_MATCH, match_len, match)) {
1702                 nlmsg_free(msg);
1703                 return -1;
1704         }
1705
1706         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
1707         if (ret) {
1708                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1709                            "failed (type=%u): ret=%d (%s)",
1710                            type, ret, strerror(-ret));
1711                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1712                             match, match_len);
1713         }
1714         return ret;
1715 }
1716
1717
1718 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
1719 {
1720         if (bss->nl_mgmt) {
1721                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
1722                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
1723                 return -1;
1724         }
1725
1726         bss->nl_mgmt = nl_create_handle(bss->nl_cb, "mgmt");
1727         if (bss->nl_mgmt == NULL)
1728                 return -1;
1729
1730         return 0;
1731 }
1732
1733
1734 static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss)
1735 {
1736         nl80211_register_eloop_read(&bss->nl_mgmt,
1737                                     wpa_driver_nl80211_event_receive,
1738                                     bss->nl_cb);
1739 }
1740
1741
1742 static int nl80211_register_action_frame(struct i802_bss *bss,
1743                                          const u8 *match, size_t match_len)
1744 {
1745         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1746         return nl80211_register_frame(bss, bss->nl_mgmt,
1747                                       type, match, match_len);
1748 }
1749
1750
1751 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
1752 {
1753         struct wpa_driver_nl80211_data *drv = bss->drv;
1754         int ret = 0;
1755
1756         if (nl80211_alloc_mgmt_handle(bss))
1757                 return -1;
1758         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
1759                    "handle %p", bss->nl_mgmt);
1760
1761         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
1762                 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
1763
1764                 /* register for any AUTH message */
1765                 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
1766         }
1767
1768 #ifdef CONFIG_INTERWORKING
1769         /* QoS Map Configure */
1770         if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0)
1771                 ret = -1;
1772 #endif /* CONFIG_INTERWORKING */
1773 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
1774         /* GAS Initial Request */
1775         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
1776                 ret = -1;
1777         /* GAS Initial Response */
1778         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
1779                 ret = -1;
1780         /* GAS Comeback Request */
1781         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
1782                 ret = -1;
1783         /* GAS Comeback Response */
1784         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
1785                 ret = -1;
1786         /* Protected GAS Initial Request */
1787         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0)
1788                 ret = -1;
1789         /* Protected GAS Initial Response */
1790         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0)
1791                 ret = -1;
1792         /* Protected GAS Comeback Request */
1793         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0)
1794                 ret = -1;
1795         /* Protected GAS Comeback Response */
1796         if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0)
1797                 ret = -1;
1798 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
1799 #ifdef CONFIG_P2P
1800         /* P2P Public Action */
1801         if (nl80211_register_action_frame(bss,
1802                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1803                                           6) < 0)
1804                 ret = -1;
1805         /* P2P Action */
1806         if (nl80211_register_action_frame(bss,
1807                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1808                                           5) < 0)
1809                 ret = -1;
1810 #endif /* CONFIG_P2P */
1811 #ifdef CONFIG_IEEE80211W
1812         /* SA Query Response */
1813         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
1814                 ret = -1;
1815 #endif /* CONFIG_IEEE80211W */
1816 #ifdef CONFIG_TDLS
1817         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
1818                 /* TDLS Discovery Response */
1819                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
1820                     0)
1821                         ret = -1;
1822         }
1823 #endif /* CONFIG_TDLS */
1824
1825         /* FT Action frames */
1826         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
1827                 ret = -1;
1828         else
1829                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1830                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1831
1832         /* WNM - BSS Transition Management Request */
1833         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
1834                 ret = -1;
1835         /* WNM-Sleep Mode Response */
1836         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0)
1837                 ret = -1;
1838
1839 #ifdef CONFIG_HS20
1840         /* WNM-Notification */
1841         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0)
1842                 ret = -1;
1843 #endif /* CONFIG_HS20 */
1844
1845         /* WMM-AC ADDTS Response */
1846         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x01", 2) < 0)
1847                 ret = -1;
1848
1849         /* WMM-AC DELTS */
1850         if (nl80211_register_action_frame(bss, (u8 *) "\x11\x02", 2) < 0)
1851                 ret = -1;
1852
1853         /* Radio Measurement - Neighbor Report Response */
1854         if (nl80211_register_action_frame(bss, (u8 *) "\x05\x05", 2) < 0)
1855                 ret = -1;
1856
1857         /* Radio Measurement - Link Measurement Request */
1858         if ((drv->capa.rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) &&
1859             (nl80211_register_action_frame(bss, (u8 *) "\x05\x02", 2) < 0))
1860                 ret = -1;
1861
1862         nl80211_mgmt_handle_register_eloop(bss);
1863
1864         return ret;
1865 }
1866
1867
1868 static int nl80211_mgmt_subscribe_mesh(struct i802_bss *bss)
1869 {
1870         int ret = 0;
1871
1872         if (nl80211_alloc_mgmt_handle(bss))
1873                 return -1;
1874
1875         wpa_printf(MSG_DEBUG,
1876                    "nl80211: Subscribe to mgmt frames with mesh handle %p",
1877                    bss->nl_mgmt);
1878
1879         /* Auth frames for mesh SAE */
1880         if (nl80211_register_frame(bss, bss->nl_mgmt,
1881                                    (WLAN_FC_TYPE_MGMT << 2) |
1882                                    (WLAN_FC_STYPE_AUTH << 4),
1883                                    NULL, 0) < 0)
1884                 ret = -1;
1885
1886         /* Mesh peering open */
1887         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x01", 2) < 0)
1888                 ret = -1;
1889         /* Mesh peering confirm */
1890         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x02", 2) < 0)
1891                 ret = -1;
1892         /* Mesh peering close */
1893         if (nl80211_register_action_frame(bss, (u8 *) "\x0f\x03", 2) < 0)
1894                 ret = -1;
1895
1896         nl80211_mgmt_handle_register_eloop(bss);
1897
1898         return ret;
1899 }
1900
1901
1902 static int nl80211_register_spurious_class3(struct i802_bss *bss)
1903 {
1904         struct nl_msg *msg;
1905         int ret;
1906
1907         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_UNEXPECTED_FRAME);
1908         ret = send_and_recv(bss->drv->global, bss->nl_mgmt, msg, NULL, NULL);
1909         if (ret) {
1910                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
1911                            "failed: ret=%d (%s)",
1912                            ret, strerror(-ret));
1913         }
1914         return ret;
1915 }
1916
1917
1918 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
1919 {
1920         static const int stypes[] = {
1921                 WLAN_FC_STYPE_AUTH,
1922                 WLAN_FC_STYPE_ASSOC_REQ,
1923                 WLAN_FC_STYPE_REASSOC_REQ,
1924                 WLAN_FC_STYPE_DISASSOC,
1925                 WLAN_FC_STYPE_DEAUTH,
1926                 WLAN_FC_STYPE_ACTION,
1927                 WLAN_FC_STYPE_PROBE_REQ,
1928 /* Beacon doesn't work as mac80211 doesn't currently allow
1929  * it, but it wouldn't really be the right thing anyway as
1930  * it isn't per interface ... maybe just dump the scan
1931  * results periodically for OLBC?
1932  */
1933                 /* WLAN_FC_STYPE_BEACON, */
1934         };
1935         unsigned int i;
1936
1937         if (nl80211_alloc_mgmt_handle(bss))
1938                 return -1;
1939         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1940                    "handle %p", bss->nl_mgmt);
1941
1942         for (i = 0; i < ARRAY_SIZE(stypes); i++) {
1943                 if (nl80211_register_frame(bss, bss->nl_mgmt,
1944                                            (WLAN_FC_TYPE_MGMT << 2) |
1945                                            (stypes[i] << 4),
1946                                            NULL, 0) < 0) {
1947                         goto out_err;
1948                 }
1949         }
1950
1951         if (nl80211_register_spurious_class3(bss))
1952                 goto out_err;
1953
1954         if (nl80211_get_wiphy_data_ap(bss) == NULL)
1955                 goto out_err;
1956
1957         nl80211_mgmt_handle_register_eloop(bss);
1958         return 0;
1959
1960 out_err:
1961         nl_destroy_handles(&bss->nl_mgmt);
1962         return -1;
1963 }
1964
1965
1966 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
1967 {
1968         if (nl80211_alloc_mgmt_handle(bss))
1969                 return -1;
1970         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
1971                    "handle %p (device SME)", bss->nl_mgmt);
1972
1973         if (nl80211_register_frame(bss, bss->nl_mgmt,
1974                                    (WLAN_FC_TYPE_MGMT << 2) |
1975                                    (WLAN_FC_STYPE_ACTION << 4),
1976                                    NULL, 0) < 0)
1977                 goto out_err;
1978
1979         nl80211_mgmt_handle_register_eloop(bss);
1980         return 0;
1981
1982 out_err:
1983         nl_destroy_handles(&bss->nl_mgmt);
1984         return -1;
1985 }
1986
1987
1988 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
1989 {
1990         if (bss->nl_mgmt == NULL)
1991                 return;
1992         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
1993                    "(%s)", bss->nl_mgmt, reason);
1994         nl80211_destroy_eloop_handle(&bss->nl_mgmt);
1995
1996         nl80211_put_wiphy_data_ap(bss);
1997 }
1998
1999
2000 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
2001 {
2002         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
2003 }
2004
2005
2006 static void nl80211_del_p2pdev(struct i802_bss *bss)
2007 {
2008         struct nl_msg *msg;
2009         int ret;
2010
2011         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_INTERFACE);
2012         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2013
2014         wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s",
2015                    bss->ifname, (long long unsigned int) bss->wdev_id,
2016                    strerror(-ret));
2017 }
2018
2019
2020 static int nl80211_set_p2pdev(struct i802_bss *bss, int start)
2021 {
2022         struct nl_msg *msg;
2023         int ret;
2024
2025         msg = nl80211_cmd_msg(bss, 0, start ? NL80211_CMD_START_P2P_DEVICE :
2026                               NL80211_CMD_STOP_P2P_DEVICE);
2027         ret = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
2028
2029         wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s",
2030                    start ? "Start" : "Stop",
2031                    bss->ifname, (long long unsigned int) bss->wdev_id,
2032                    strerror(-ret));
2033         return ret;
2034 }
2035
2036
2037 static int i802_set_iface_flags(struct i802_bss *bss, int up)
2038 {
2039         enum nl80211_iftype nlmode;
2040
2041         nlmode = nl80211_get_ifmode(bss);
2042         if (nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2043                 return linux_set_iface_flags(bss->drv->global->ioctl_sock,
2044                                              bss->ifname, up);
2045         }
2046
2047         /* P2P Device has start/stop which is equivalent */
2048         return nl80211_set_p2pdev(bss, up);
2049 }
2050
2051
2052 static int
2053 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv,
2054                                    const u8 *set_addr, int first,
2055                                    const char *driver_params)
2056 {
2057         struct i802_bss *bss = drv->first_bss;
2058         int send_rfkill_event = 0;
2059         enum nl80211_iftype nlmode;
2060
2061         drv->ifindex = if_nametoindex(bss->ifname);
2062         bss->ifindex = drv->ifindex;
2063         bss->wdev_id = drv->global->if_add_wdevid;
2064         bss->wdev_id_set = drv->global->if_add_wdevid_set;
2065
2066         bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex;
2067         bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set;
2068         drv->global->if_add_wdevid_set = 0;
2069
2070         if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2071                 bss->static_ap = 1;
2072
2073         if (wpa_driver_nl80211_capa(drv))
2074                 return -1;
2075
2076         if (driver_params && nl80211_set_param(bss, driver_params) < 0)
2077                 return -1;
2078
2079         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2080                    bss->ifname, drv->phyname);
2081
2082         if (set_addr &&
2083             (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) ||
2084              linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2085                                 set_addr)))
2086                 return -1;
2087
2088         if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP)
2089                 drv->start_mode_ap = 1;
2090
2091         if (drv->hostapd || bss->static_ap)
2092                 nlmode = NL80211_IFTYPE_AP;
2093         else if (bss->if_dynamic)
2094                 nlmode = nl80211_get_ifmode(bss);
2095         else
2096                 nlmode = NL80211_IFTYPE_STATION;
2097
2098         if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) {
2099                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode");
2100                 return -1;
2101         }
2102
2103         if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2104                 nl80211_get_macaddr(bss);
2105
2106         if (!rfkill_is_blocked(drv->rfkill)) {
2107                 int ret = i802_set_iface_flags(bss, 1);
2108                 if (ret) {
2109                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
2110                                    "interface '%s' UP", bss->ifname);
2111                         return ret;
2112                 }
2113                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2114                         return ret;
2115         } else {
2116                 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
2117                            "interface '%s' due to rfkill", bss->ifname);
2118                 if (nlmode == NL80211_IFTYPE_P2P_DEVICE)
2119                         return 0;
2120                 drv->if_disabled = 1;
2121                 send_rfkill_event = 1;
2122         }
2123
2124         if (!drv->hostapd)
2125                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
2126                                        1, IF_OPER_DORMANT);
2127
2128         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2129                                bss->addr))
2130                 return -1;
2131         os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN);
2132
2133         if (send_rfkill_event) {
2134                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
2135                                        drv, drv->ctx);
2136         }
2137
2138         return 0;
2139 }
2140
2141
2142 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
2143 {
2144         struct nl_msg *msg;
2145
2146         wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)",
2147                    drv->ifindex);
2148         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_DEL_BEACON);
2149         return send_and_recv_msgs(drv, msg, NULL, NULL);
2150 }
2151
2152
2153 /**
2154  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
2155  * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init()
2156  *
2157  * Shut down driver interface and processing of driver events. Free
2158  * private data buffer if one was allocated in wpa_driver_nl80211_init().
2159  */
2160 static void wpa_driver_nl80211_deinit(struct i802_bss *bss)
2161 {
2162         struct wpa_driver_nl80211_data *drv = bss->drv;
2163
2164         wpa_printf(MSG_INFO, "nl80211: deinit ifname=%s disabled_11b_rates=%d",
2165                    bss->ifname, drv->disabled_11b_rates);
2166
2167         bss->in_deinit = 1;
2168         if (drv->data_tx_status)
2169                 eloop_unregister_read_sock(drv->eapol_tx_sock);
2170         if (drv->eapol_tx_sock >= 0)
2171                 close(drv->eapol_tx_sock);
2172
2173         if (bss->nl_preq)
2174                 wpa_driver_nl80211_probe_req_report(bss, 0);
2175         if (bss->added_if_into_bridge) {
2176                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
2177                                     bss->ifname) < 0)
2178                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2179                                    "interface %s from bridge %s: %s",
2180                                    bss->ifname, bss->brname, strerror(errno));
2181                 if (drv->rtnl_sk)
2182                         nl80211_handle_destroy(drv->rtnl_sk);
2183         }
2184         if (bss->added_bridge) {
2185                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->brname,
2186                                           0) < 0)
2187                         wpa_printf(MSG_INFO,
2188                                    "nl80211: Could not set bridge %s down",
2189                                    bss->brname);
2190                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
2191                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
2192                                    "bridge %s: %s",
2193                                    bss->brname, strerror(errno));
2194         }
2195
2196         nl80211_remove_monitor_interface(drv);
2197
2198         if (is_ap_interface(drv->nlmode))
2199                 wpa_driver_nl80211_del_beacon(drv);
2200
2201         if (drv->eapol_sock >= 0) {
2202                 eloop_unregister_read_sock(drv->eapol_sock);
2203                 close(drv->eapol_sock);
2204         }
2205
2206         if (drv->if_indices != drv->default_if_indices)
2207                 os_free(drv->if_indices);
2208
2209         if (drv->disabled_11b_rates)
2210                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2211
2212         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
2213                                IF_OPER_UP);
2214         eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx);
2215         rfkill_deinit(drv->rfkill);
2216
2217         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2218
2219         if (!drv->start_iface_up)
2220                 (void) i802_set_iface_flags(bss, 0);
2221
2222         if (drv->addr_changed) {
2223                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
2224                                           0) < 0) {
2225                         wpa_printf(MSG_DEBUG,
2226                                    "nl80211: Could not set interface down to restore permanent MAC address");
2227                 }
2228                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
2229                                        drv->perm_addr) < 0) {
2230                         wpa_printf(MSG_DEBUG,
2231                                    "nl80211: Could not restore permanent MAC address");
2232                 }
2233         }
2234
2235         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) {
2236                 if (!drv->hostapd || !drv->start_mode_ap)
2237                         wpa_driver_nl80211_set_mode(bss,
2238                                                     NL80211_IFTYPE_STATION);
2239                 nl80211_mgmt_unsubscribe(bss, "deinit");
2240         } else {
2241                 nl80211_mgmt_unsubscribe(bss, "deinit");
2242                 nl80211_del_p2pdev(bss);
2243         }
2244
2245         nl80211_destroy_bss(drv->first_bss);
2246
2247         os_free(drv->filter_ssids);
2248
2249         os_free(drv->auth_ie);
2250
2251         if (drv->in_interface_list)
2252                 dl_list_del(&drv->list);
2253
2254         os_free(drv->extended_capa);
2255         os_free(drv->extended_capa_mask);
2256         os_free(drv->first_bss);
2257         os_free(drv);
2258 }
2259
2260
2261 static u32 wpa_alg_to_cipher_suite(enum wpa_alg alg, size_t key_len)
2262 {
2263         switch (alg) {
2264         case WPA_ALG_WEP:
2265                 if (key_len == 5)
2266                         return WLAN_CIPHER_SUITE_WEP40;
2267                 return WLAN_CIPHER_SUITE_WEP104;
2268         case WPA_ALG_TKIP:
2269                 return WLAN_CIPHER_SUITE_TKIP;
2270         case WPA_ALG_CCMP:
2271                 return WLAN_CIPHER_SUITE_CCMP;
2272         case WPA_ALG_GCMP:
2273                 return WLAN_CIPHER_SUITE_GCMP;
2274         case WPA_ALG_CCMP_256:
2275                 return WLAN_CIPHER_SUITE_CCMP_256;
2276         case WPA_ALG_GCMP_256:
2277                 return WLAN_CIPHER_SUITE_GCMP_256;
2278         case WPA_ALG_IGTK:
2279                 return WLAN_CIPHER_SUITE_AES_CMAC;
2280         case WPA_ALG_BIP_GMAC_128:
2281                 return WLAN_CIPHER_SUITE_BIP_GMAC_128;
2282         case WPA_ALG_BIP_GMAC_256:
2283                 return WLAN_CIPHER_SUITE_BIP_GMAC_256;
2284         case WPA_ALG_BIP_CMAC_256:
2285                 return WLAN_CIPHER_SUITE_BIP_CMAC_256;
2286         case WPA_ALG_SMS4:
2287                 return WLAN_CIPHER_SUITE_SMS4;
2288         case WPA_ALG_KRK:
2289                 return WLAN_CIPHER_SUITE_KRK;
2290         case WPA_ALG_NONE:
2291         case WPA_ALG_PMK:
2292                 wpa_printf(MSG_ERROR, "nl80211: Unexpected encryption algorithm %d",
2293                            alg);
2294                 return 0;
2295         }
2296
2297         wpa_printf(MSG_ERROR, "nl80211: Unsupported encryption algorithm %d",
2298                    alg);
2299         return 0;
2300 }
2301
2302
2303 static u32 wpa_cipher_to_cipher_suite(unsigned int cipher)
2304 {
2305         switch (cipher) {
2306         case WPA_CIPHER_CCMP_256:
2307                 return WLAN_CIPHER_SUITE_CCMP_256;
2308         case WPA_CIPHER_GCMP_256:
2309                 return WLAN_CIPHER_SUITE_GCMP_256;
2310         case WPA_CIPHER_CCMP:
2311                 return WLAN_CIPHER_SUITE_CCMP;
2312         case WPA_CIPHER_GCMP:
2313                 return WLAN_CIPHER_SUITE_GCMP;
2314         case WPA_CIPHER_TKIP:
2315                 return WLAN_CIPHER_SUITE_TKIP;
2316         case WPA_CIPHER_WEP104:
2317                 return WLAN_CIPHER_SUITE_WEP104;
2318         case WPA_CIPHER_WEP40:
2319                 return WLAN_CIPHER_SUITE_WEP40;
2320         case WPA_CIPHER_GTK_NOT_USED:
2321                 return WLAN_CIPHER_SUITE_NO_GROUP_ADDR;
2322         }
2323
2324         return 0;
2325 }
2326
2327
2328 static int wpa_cipher_to_cipher_suites(unsigned int ciphers, u32 suites[],
2329                                        int max_suites)
2330 {
2331         int num_suites = 0;
2332
2333         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP_256)
2334                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP_256;
2335         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP_256)
2336                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP_256;
2337         if (num_suites < max_suites && ciphers & WPA_CIPHER_CCMP)
2338                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
2339         if (num_suites < max_suites && ciphers & WPA_CIPHER_GCMP)
2340                 suites[num_suites++] = WLAN_CIPHER_SUITE_GCMP;
2341         if (num_suites < max_suites && ciphers & WPA_CIPHER_TKIP)
2342                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
2343         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP104)
2344                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
2345         if (num_suites < max_suites && ciphers & WPA_CIPHER_WEP40)
2346                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
2347
2348         return num_suites;
2349 }
2350
2351
2352 static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
2353                                   const u8 *key, size_t key_len)
2354 {
2355         struct nl_msg *msg;
2356         int ret;
2357
2358         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
2359                 return 0;
2360
2361         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
2362             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
2363             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
2364                         QCA_NL80211_VENDOR_SUBCMD_KEY_MGMT_SET_KEY) ||
2365             nla_put(msg, NL80211_ATTR_VENDOR_DATA, key_len, key)) {
2366                 nl80211_nlmsg_clear(msg);
2367                 nlmsg_free(msg);
2368                 return -1;
2369         }
2370         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
2371         if (ret) {
2372                 wpa_printf(MSG_DEBUG,
2373                            "nl80211: Key management set key failed: ret=%d (%s)",
2374                            ret, strerror(-ret));
2375         }
2376
2377         return ret;
2378 }
2379
2380
2381 static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
2382                                       enum wpa_alg alg, const u8 *addr,
2383                                       int key_idx, int set_tx,
2384                                       const u8 *seq, size_t seq_len,
2385                                       const u8 *key, size_t key_len)
2386 {
2387         struct wpa_driver_nl80211_data *drv = bss->drv;
2388         int ifindex;
2389         struct nl_msg *msg;
2390         int ret;
2391         int tdls = 0;
2392
2393         /* Ignore for P2P Device */
2394         if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
2395                 return 0;
2396
2397         ifindex = if_nametoindex(ifname);
2398         wpa_printf(MSG_DEBUG, "%s: ifindex=%d (%s) alg=%d addr=%p key_idx=%d "
2399                    "set_tx=%d seq_len=%lu key_len=%lu",
2400                    __func__, ifindex, ifname, alg, addr, key_idx, set_tx,
2401                    (unsigned long) seq_len, (unsigned long) key_len);
2402 #ifdef CONFIG_TDLS
2403         if (key_idx == -1) {
2404                 key_idx = 0;
2405                 tdls = 1;
2406         }
2407 #endif /* CONFIG_TDLS */
2408
2409         if (alg == WPA_ALG_PMK &&
2410             (drv->capa.flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) {
2411                 wpa_printf(MSG_DEBUG, "%s: calling issue_key_mgmt_set_key",
2412                            __func__);
2413                 ret = issue_key_mgmt_set_key(drv, key, key_len);
2414                 return ret;
2415         }
2416
2417         if (alg == WPA_ALG_NONE) {
2418                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
2419                 if (!msg)
2420                         return -ENOBUFS;
2421         } else {
2422                 msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_NEW_KEY);
2423                 if (!msg ||
2424                     nla_put(msg, NL80211_ATTR_KEY_DATA, key_len, key) ||
2425                     nla_put_u32(msg, NL80211_ATTR_KEY_CIPHER,
2426                                 wpa_alg_to_cipher_suite(alg, key_len)))
2427                         goto fail;
2428                 wpa_hexdump_key(MSG_DEBUG, "nl80211: KEY_DATA", key, key_len);
2429         }
2430
2431         if (seq && seq_len) {
2432                 if (nla_put(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq))
2433                         goto fail;
2434                 wpa_hexdump(MSG_DEBUG, "nl80211: KEY_SEQ", seq, seq_len);
2435         }
2436
2437         if (addr && !is_broadcast_ether_addr(addr)) {
2438                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2439                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
2440                         goto fail;
2441
2442                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
2443                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
2444                         if (nla_put_u32(msg, NL80211_ATTR_KEY_TYPE,
2445                                         NL80211_KEYTYPE_GROUP))
2446                                 goto fail;
2447                 }
2448         } else if (addr && is_broadcast_ether_addr(addr)) {
2449                 struct nlattr *types;
2450
2451                 wpa_printf(MSG_DEBUG, "   broadcast key");
2452
2453                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2454                 if (!types ||
2455                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2456                         goto fail;
2457                 nla_nest_end(msg, types);
2458         }
2459         if (nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2460                 goto fail;
2461
2462         ret = send_and_recv_msgs(drv, msg, NULL, key ? (void *) -1 : NULL);
2463         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2464                 ret = 0;
2465         if (ret)
2466                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2467                            ret, strerror(-ret));
2468
2469         /*
2470          * If we failed or don't need to set the default TX key (below),
2471          * we're done here.
2472          */
2473         if (ret || !set_tx || alg == WPA_ALG_NONE || tdls)
2474                 return ret;
2475         if (is_ap_interface(drv->nlmode) && addr &&
2476             !is_broadcast_ether_addr(addr))
2477                 return ret;
2478
2479         msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_SET_KEY);
2480         if (!msg ||
2481             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx) ||
2482             nla_put_flag(msg, alg == WPA_ALG_IGTK ?
2483                          NL80211_ATTR_KEY_DEFAULT_MGMT :
2484                          NL80211_ATTR_KEY_DEFAULT))
2485                 goto fail;
2486         if (addr && is_broadcast_ether_addr(addr)) {
2487                 struct nlattr *types;
2488
2489                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2490                 if (!types ||
2491                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST))
2492                         goto fail;
2493                 nla_nest_end(msg, types);
2494         } else if (addr) {
2495                 struct nlattr *types;
2496
2497                 types = nla_nest_start(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
2498                 if (!types ||
2499                     nla_put_flag(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST))
2500                         goto fail;
2501                 nla_nest_end(msg, types);
2502         }
2503
2504         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2505         if (ret == -ENOENT)
2506                 ret = 0;
2507         if (ret)
2508                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2509                            "err=%d %s)", ret, strerror(-ret));
2510         return ret;
2511
2512 fail:
2513         nl80211_nlmsg_clear(msg);
2514         nlmsg_free(msg);
2515         return -ENOBUFS;
2516 }
2517
2518
2519 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2520                       int key_idx, int defkey,
2521                       const u8 *seq, size_t seq_len,
2522                       const u8 *key, size_t key_len)
2523 {
2524         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2525         if (!key_attr)
2526                 return -1;
2527
2528         if (defkey && alg == WPA_ALG_IGTK) {
2529                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT_MGMT))
2530                         return -1;
2531         } else if (defkey) {
2532                 if (nla_put_flag(msg, NL80211_KEY_DEFAULT))
2533                         return -1;
2534         }
2535
2536         if (nla_put_u8(msg, NL80211_KEY_IDX, key_idx) ||
2537             nla_put_u32(msg, NL80211_KEY_CIPHER,
2538                         wpa_alg_to_cipher_suite(alg, key_len)) ||
2539             (seq && seq_len &&
2540              nla_put(msg, NL80211_KEY_SEQ, seq_len, seq)) ||
2541             nla_put(msg, NL80211_KEY_DATA, key_len, key))
2542                 return -1;
2543
2544         nla_nest_end(msg, key_attr);
2545
2546         return 0;
2547 }
2548
2549
2550 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2551                                  struct nl_msg *msg)
2552 {
2553         int i, privacy = 0;
2554         struct nlattr *nl_keys, *nl_key;
2555
2556         for (i = 0; i < 4; i++) {
2557                 if (!params->wep_key[i])
2558                         continue;
2559                 privacy = 1;
2560                 break;
2561         }
2562         if (params->wps == WPS_MODE_PRIVACY)
2563                 privacy = 1;
2564         if (params->pairwise_suite &&
2565             params->pairwise_suite != WPA_CIPHER_NONE)
2566                 privacy = 1;
2567
2568         if (!privacy)
2569                 return 0;
2570
2571         if (nla_put_flag(msg, NL80211_ATTR_PRIVACY))
2572                 return -ENOBUFS;
2573
2574         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2575         if (!nl_keys)
2576                 return -ENOBUFS;
2577
2578         for (i = 0; i < 4; i++) {
2579                 if (!params->wep_key[i])
2580                         continue;
2581
2582                 nl_key = nla_nest_start(msg, i);
2583                 if (!nl_key ||
2584                     nla_put(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2585                             params->wep_key[i]) ||
2586                     nla_put_u32(msg, NL80211_KEY_CIPHER,
2587                                 params->wep_key_len[i] == 5 ?
2588                                 WLAN_CIPHER_SUITE_WEP40 :
2589                                 WLAN_CIPHER_SUITE_WEP104) ||
2590                     nla_put_u8(msg, NL80211_KEY_IDX, i) ||
2591                     (i == params->wep_tx_keyidx &&
2592                      nla_put_flag(msg, NL80211_KEY_DEFAULT)))
2593                         return -ENOBUFS;
2594
2595                 nla_nest_end(msg, nl_key);
2596         }
2597         nla_nest_end(msg, nl_keys);
2598
2599         return 0;
2600 }
2601
2602
2603 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2604                             const u8 *addr, int cmd, u16 reason_code,
2605                             int local_state_change)
2606 {
2607         int ret;
2608         struct nl_msg *msg;
2609
2610         if (!(msg = nl80211_drv_msg(drv, 0, cmd)) ||
2611             nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code) ||
2612             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
2613             (local_state_change &&
2614              nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))) {
2615                 nlmsg_free(msg);
2616                 return -1;
2617         }
2618
2619         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2620         if (ret) {
2621                 wpa_dbg(drv->ctx, MSG_DEBUG,
2622                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
2623                         reason_code, ret, strerror(-ret));
2624         }
2625         return ret;
2626 }
2627
2628
2629 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2630                                          int reason_code)
2631 {
2632         int ret;
2633
2634         wpa_printf(MSG_DEBUG, "%s(reason_code=%d)", __func__, reason_code);
2635         nl80211_mark_disconnected(drv);
2636         /* Disconnect command doesn't need BSSID - it uses cached value */
2637         ret = wpa_driver_nl80211_mlme(drv, NULL, NL80211_CMD_DISCONNECT,
2638                                       reason_code, 0);
2639         /*
2640          * For locally generated disconnect, supplicant already generates a
2641          * DEAUTH event, so ignore the event from NL80211.
2642          */
2643         drv->ignore_next_local_disconnect = ret == 0;
2644
2645         return ret;
2646 }
2647
2648
2649 static int wpa_driver_nl80211_deauthenticate(struct i802_bss *bss,
2650                                              const u8 *addr, int reason_code)
2651 {
2652         struct wpa_driver_nl80211_data *drv = bss->drv;
2653         int ret;
2654
2655         if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
2656                 nl80211_mark_disconnected(drv);
2657                 return nl80211_leave_ibss(drv, 1);
2658         }
2659         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2660                 return wpa_driver_nl80211_disconnect(drv, reason_code);
2661         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2662                    __func__, MAC2STR(addr), reason_code);
2663         nl80211_mark_disconnected(drv);
2664         ret = wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2665                                       reason_code, 0);
2666         /*
2667          * For locally generated deauthenticate, supplicant already generates a
2668          * DEAUTH event, so ignore the event from NL80211.
2669          */
2670         drv->ignore_next_local_deauth = ret == 0;
2671         return ret;
2672 }
2673
2674
2675 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
2676                                      struct wpa_driver_auth_params *params)
2677 {
2678         int i;
2679
2680         drv->auth_freq = params->freq;
2681         drv->auth_alg = params->auth_alg;
2682         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
2683         drv->auth_local_state_change = params->local_state_change;
2684         drv->auth_p2p = params->p2p;
2685
2686         if (params->bssid)
2687                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
2688         else
2689                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
2690
2691         if (params->ssid) {
2692                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
2693                 drv->auth_ssid_len = params->ssid_len;
2694         } else
2695                 drv->auth_ssid_len = 0;
2696
2697
2698         os_free(drv->auth_ie);
2699         drv->auth_ie = NULL;
2700         drv->auth_ie_len = 0;
2701         if (params->ie) {
2702                 drv->auth_ie = os_malloc(params->ie_len);
2703                 if (drv->auth_ie) {
2704                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
2705                         drv->auth_ie_len = params->ie_len;
2706                 }
2707         }
2708
2709         for (i = 0; i < 4; i++) {
2710                 if (params->wep_key[i] && params->wep_key_len[i] &&
2711                     params->wep_key_len[i] <= 16) {
2712                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
2713                                   params->wep_key_len[i]);
2714                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
2715                 } else
2716                         drv->auth_wep_key_len[i] = 0;
2717         }
2718 }
2719
2720
2721 static void nl80211_unmask_11b_rates(struct i802_bss *bss)
2722 {
2723         struct wpa_driver_nl80211_data *drv = bss->drv;
2724
2725         if (is_p2p_net_interface(drv->nlmode) || !drv->disabled_11b_rates)
2726                 return;
2727
2728         /*
2729          * Looks like we failed to unmask 11b rates previously. This could
2730          * happen, e.g., if the interface was down at the point in time when a
2731          * P2P group was terminated.
2732          */
2733         wpa_printf(MSG_DEBUG,
2734                    "nl80211: Interface %s mode is for non-P2P, but 11b rates were disabled - re-enable them",
2735                    bss->ifname);
2736         nl80211_disable_11b_rates(drv, drv->ifindex, 0);
2737 }
2738
2739
2740 static int wpa_driver_nl80211_authenticate(
2741         struct i802_bss *bss, struct wpa_driver_auth_params *params)
2742 {
2743         struct wpa_driver_nl80211_data *drv = bss->drv;
2744         int ret = -1, i;
2745         struct nl_msg *msg;
2746         enum nl80211_auth_type type;
2747         enum nl80211_iftype nlmode;
2748         int count = 0;
2749         int is_retry;
2750
2751         nl80211_unmask_11b_rates(bss);
2752
2753         is_retry = drv->retry_auth;
2754         drv->retry_auth = 0;
2755         drv->ignore_deauth_event = 0;
2756
2757         nl80211_mark_disconnected(drv);
2758         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2759         if (params->bssid)
2760                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
2761         else
2762                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
2763         /* FIX: IBSS mode */
2764         nlmode = params->p2p ?
2765                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
2766         if (drv->nlmode != nlmode &&
2767             wpa_driver_nl80211_set_mode(bss, nlmode) < 0)
2768                 return -1;
2769
2770 retry:
2771         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2772                    drv->ifindex);
2773
2774         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_AUTHENTICATE);
2775         if (!msg)
2776                 goto fail;
2777
2778         for (i = 0; i < 4; i++) {
2779                 if (!params->wep_key[i])
2780                         continue;
2781                 wpa_driver_nl80211_set_key(bss->ifname, bss, WPA_ALG_WEP,
2782                                            NULL, i,
2783                                            i == params->wep_tx_keyidx, NULL, 0,
2784                                            params->wep_key[i],
2785                                            params->wep_key_len[i]);
2786                 if (params->wep_tx_keyidx != i)
2787                         continue;
2788                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2789                                params->wep_key[i], params->wep_key_len[i]))
2790                         goto fail;
2791         }
2792
2793         if (params->bssid) {
2794                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2795                            MAC2STR(params->bssid));
2796                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
2797                         goto fail;
2798         }
2799         if (params->freq) {
2800                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2801                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
2802                         goto fail;
2803         }
2804         if (params->ssid) {
2805                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2806                                   params->ssid, params->ssid_len);
2807                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
2808                             params->ssid))
2809                         goto fail;
2810         }
2811         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2812         if (params->ie &&
2813             nla_put(msg, NL80211_ATTR_IE, params->ie_len, params->ie))
2814                 goto fail;
2815         if (params->sae_data) {
2816                 wpa_hexdump(MSG_DEBUG, "  * SAE data", params->sae_data,
2817                             params->sae_data_len);
2818                 if (nla_put(msg, NL80211_ATTR_SAE_DATA, params->sae_data_len,
2819                             params->sae_data))
2820                         goto fail;
2821         }
2822         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2823                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2824         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2825                 type = NL80211_AUTHTYPE_SHARED_KEY;
2826         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2827                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2828         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2829                 type = NL80211_AUTHTYPE_FT;
2830         else if (params->auth_alg & WPA_AUTH_ALG_SAE)
2831                 type = NL80211_AUTHTYPE_SAE;
2832         else
2833                 goto fail;
2834         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2835         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
2836                 goto fail;
2837         if (params->local_state_change) {
2838                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2839                 if (nla_put_flag(msg, NL80211_ATTR_LOCAL_STATE_CHANGE))
2840                         goto fail;
2841         }
2842
2843         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2844         msg = NULL;
2845         if (ret) {
2846                 wpa_dbg(drv->ctx, MSG_DEBUG,
2847                         "nl80211: MLME command failed (auth): ret=%d (%s)",
2848                         ret, strerror(-ret));
2849                 count++;
2850                 if (ret == -EALREADY && count == 1 && params->bssid &&
2851                     !params->local_state_change) {
2852                         /*
2853                          * mac80211 does not currently accept new
2854                          * authentication if we are already authenticated. As a
2855                          * workaround, force deauthentication and try again.
2856                          */
2857                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2858                                    "after forced deauthentication");
2859                         drv->ignore_deauth_event = 1;
2860                         wpa_driver_nl80211_deauthenticate(
2861                                 bss, params->bssid,
2862                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2863                         nlmsg_free(msg);
2864                         goto retry;
2865                 }
2866
2867                 if (ret == -ENOENT && params->freq && !is_retry) {
2868                         /*
2869                          * cfg80211 has likely expired the BSS entry even
2870                          * though it was previously available in our internal
2871                          * BSS table. To recover quickly, start a single
2872                          * channel scan on the specified channel.
2873                          */
2874                         struct wpa_driver_scan_params scan;
2875                         int freqs[2];
2876
2877                         os_memset(&scan, 0, sizeof(scan));
2878                         scan.num_ssids = 1;
2879                         if (params->ssid) {
2880                                 scan.ssids[0].ssid = params->ssid;
2881                                 scan.ssids[0].ssid_len = params->ssid_len;
2882                         }
2883                         freqs[0] = params->freq;
2884                         freqs[1] = 0;
2885                         scan.freqs = freqs;
2886                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
2887                                    "channel scan to refresh cfg80211 BSS "
2888                                    "entry");
2889                         ret = wpa_driver_nl80211_scan(bss, &scan);
2890                         if (ret == 0) {
2891                                 nl80211_copy_auth_params(drv, params);
2892                                 drv->scan_for_auth = 1;
2893                         }
2894                 } else if (is_retry) {
2895                         /*
2896                          * Need to indicate this with an event since the return
2897                          * value from the retry is not delivered to core code.
2898                          */
2899                         union wpa_event_data event;
2900                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
2901                                    "failed");
2902                         os_memset(&event, 0, sizeof(event));
2903                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
2904                                   ETH_ALEN);
2905                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
2906                                              &event);
2907                 }
2908         } else {
2909                 wpa_printf(MSG_DEBUG,
2910                            "nl80211: Authentication request send successfully");
2911         }
2912
2913 fail:
2914         nlmsg_free(msg);
2915         return ret;
2916 }
2917
2918
2919 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv)
2920 {
2921         struct wpa_driver_auth_params params;
2922         struct i802_bss *bss = drv->first_bss;
2923         int i;
2924
2925         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
2926
2927         os_memset(&params, 0, sizeof(params));
2928         params.freq = drv->auth_freq;
2929         params.auth_alg = drv->auth_alg;
2930         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
2931         params.local_state_change = drv->auth_local_state_change;
2932         params.p2p = drv->auth_p2p;
2933
2934         if (!is_zero_ether_addr(drv->auth_bssid_))
2935                 params.bssid = drv->auth_bssid_;
2936
2937         if (drv->auth_ssid_len) {
2938                 params.ssid = drv->auth_ssid;
2939                 params.ssid_len = drv->auth_ssid_len;
2940         }
2941
2942         params.ie = drv->auth_ie;
2943         params.ie_len = drv->auth_ie_len;
2944
2945         for (i = 0; i < 4; i++) {
2946                 if (drv->auth_wep_key_len[i]) {
2947                         params.wep_key[i] = drv->auth_wep_key[i];
2948                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
2949                 }
2950         }
2951
2952         drv->retry_auth = 1;
2953         return wpa_driver_nl80211_authenticate(bss, &params);
2954 }
2955
2956
2957 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
2958                                          const void *data, size_t len,
2959                                          int encrypt, int noack,
2960                                          unsigned int freq, int no_cck,
2961                                          int offchanok, unsigned int wait_time)
2962 {
2963         struct wpa_driver_nl80211_data *drv = bss->drv;
2964         u64 cookie;
2965         int res;
2966
2967         if (freq == 0 && drv->nlmode == NL80211_IFTYPE_ADHOC) {
2968                 freq = nl80211_get_assoc_freq(drv);
2969                 wpa_printf(MSG_DEBUG,
2970                            "nl80211: send_frame - Use assoc_freq=%u for IBSS",
2971                            freq);
2972         }
2973         if (freq == 0) {
2974                 wpa_printf(MSG_DEBUG, "nl80211: send_frame - Use bss->freq=%u",
2975                            bss->freq);
2976                 freq = bss->freq;
2977         }
2978
2979         if (drv->use_monitor) {
2980                 wpa_printf(MSG_DEBUG, "nl80211: send_frame(freq=%u bss->freq=%u) -> send_monitor",
2981                            freq, bss->freq);
2982                 return nl80211_send_monitor(drv, data, len, encrypt, noack);
2983         }
2984
2985         wpa_printf(MSG_DEBUG, "nl80211: send_frame -> send_frame_cmd");
2986         res = nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
2987                                      &cookie, no_cck, noack, offchanok);
2988         if (res == 0 && !noack) {
2989                 const struct ieee80211_mgmt *mgmt;
2990                 u16 fc;
2991
2992                 mgmt = (const struct ieee80211_mgmt *) data;
2993                 fc = le_to_host16(mgmt->frame_control);
2994                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2995                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
2996                         wpa_printf(MSG_MSGDUMP,
2997                                    "nl80211: Update send_action_cookie from 0x%llx to 0x%llx",
2998                                    (long long unsigned int)
2999                                    drv->send_action_cookie,
3000                                    (long long unsigned int) cookie);
3001                         drv->send_action_cookie = cookie;
3002                 }
3003         }
3004
3005         return res;
3006 }
3007
3008
3009 static int wpa_driver_nl80211_send_mlme(struct i802_bss *bss, const u8 *data,
3010                                         size_t data_len, int noack,
3011                                         unsigned int freq, int no_cck,
3012                                         int offchanok,
3013                                         unsigned int wait_time)
3014 {
3015         struct wpa_driver_nl80211_data *drv = bss->drv;
3016         struct ieee80211_mgmt *mgmt;
3017         int encrypt = 1;
3018         u16 fc;
3019
3020         mgmt = (struct ieee80211_mgmt *) data;
3021         fc = le_to_host16(mgmt->frame_control);
3022         wpa_printf(MSG_DEBUG, "nl80211: send_mlme - da= " MACSTR
3023                    " noack=%d freq=%u no_cck=%d offchanok=%d wait_time=%u fc=0x%x (%s) nlmode=%d",
3024                    MAC2STR(mgmt->da), noack, freq, no_cck, offchanok, wait_time,
3025                    fc, fc2str(fc), drv->nlmode);
3026
3027         if ((is_sta_interface(drv->nlmode) ||
3028              drv->nlmode == NL80211_IFTYPE_P2P_DEVICE) &&
3029             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3030             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3031                 /*
3032                  * The use of last_mgmt_freq is a bit of a hack,
3033                  * but it works due to the single-threaded nature
3034                  * of wpa_supplicant.
3035                  */
3036                 if (freq == 0) {
3037                         wpa_printf(MSG_DEBUG, "nl80211: Use last_mgmt_freq=%d",
3038                                    drv->last_mgmt_freq);
3039                         freq = drv->last_mgmt_freq;
3040                 }
3041                 return nl80211_send_frame_cmd(bss, freq, 0,
3042                                               data, data_len, NULL, 1, noack,
3043                                               1);
3044         }
3045
3046         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
3047                 if (freq == 0) {
3048                         wpa_printf(MSG_DEBUG, "nl80211: Use bss->freq=%d",
3049                                    bss->freq);
3050                         freq = bss->freq;
3051                 }
3052                 return nl80211_send_frame_cmd(bss, freq,
3053                                               (int) freq == bss->freq ? 0 :
3054                                               wait_time,
3055                                               data, data_len,
3056                                               &drv->send_action_cookie,
3057                                               no_cck, noack, offchanok);
3058         }
3059
3060         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3061             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3062                 /*
3063                  * Only one of the authentication frame types is encrypted.
3064                  * In order for static WEP encryption to work properly (i.e.,
3065                  * to not encrypt the frame), we need to tell mac80211 about
3066                  * the frames that must not be encrypted.
3067                  */
3068                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3069                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3070                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3071                         encrypt = 0;
3072         }
3073
3074         wpa_printf(MSG_DEBUG, "nl80211: send_mlme -> send_frame");
3075         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
3076                                              noack, freq, no_cck, offchanok,
3077                                              wait_time);
3078 }
3079
3080
3081 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
3082                            int slot, int ht_opmode, int ap_isolate,
3083                            int *basic_rates)
3084 {
3085         struct wpa_driver_nl80211_data *drv = bss->drv;
3086         struct nl_msg *msg;
3087
3088         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_BSS)) ||
3089             (cts >= 0 &&
3090              nla_put_u8(msg, NL80211_ATTR_BSS_CTS_PROT, cts)) ||
3091             (preamble >= 0 &&
3092              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble)) ||
3093             (slot >= 0 &&
3094              nla_put_u8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot)) ||
3095             (ht_opmode >= 0 &&
3096              nla_put_u16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode)) ||
3097             (ap_isolate >= 0 &&
3098              nla_put_u8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate)))
3099                 goto fail;
3100
3101         if (basic_rates) {
3102                 u8 rates[NL80211_MAX_SUPP_RATES];
3103                 u8 rates_len = 0;
3104                 int i;
3105
3106                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
3107                      i++)
3108                         rates[rates_len++] = basic_rates[i] / 5;
3109
3110                 if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
3111                             rates))
3112                         goto fail;
3113         }
3114
3115         return send_and_recv_msgs(drv, msg, NULL, NULL);
3116 fail:
3117         nlmsg_free(msg);
3118         return -ENOBUFS;
3119 }
3120
3121
3122 static int wpa_driver_nl80211_set_acl(void *priv,
3123                                       struct hostapd_acl_params *params)
3124 {
3125         struct i802_bss *bss = priv;
3126         struct wpa_driver_nl80211_data *drv = bss->drv;
3127         struct nl_msg *msg;
3128         struct nlattr *acl;
3129         unsigned int i;
3130         int ret;
3131
3132         if (!(drv->capa.max_acl_mac_addrs))
3133                 return -ENOTSUP;
3134
3135         if (params->num_mac_acl > drv->capa.max_acl_mac_addrs)
3136                 return -ENOTSUP;
3137
3138         wpa_printf(MSG_DEBUG, "nl80211: Set %s ACL (num_mac_acl=%u)",
3139                    params->acl_policy ? "Accept" : "Deny", params->num_mac_acl);
3140
3141         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_MAC_ACL)) ||
3142             nla_put_u32(msg, NL80211_ATTR_ACL_POLICY, params->acl_policy ?
3143                         NL80211_ACL_POLICY_DENY_UNLESS_LISTED :
3144                         NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED) ||
3145             (acl = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS)) == NULL) {
3146                 nlmsg_free(msg);
3147                 return -ENOMEM;
3148         }
3149
3150         for (i = 0; i < params->num_mac_acl; i++) {
3151                 if (nla_put(msg, i + 1, ETH_ALEN, params->mac_acl[i].addr)) {
3152                         nlmsg_free(msg);
3153                         return -ENOMEM;
3154                 }
3155         }
3156
3157         nla_nest_end(msg, acl);
3158
3159         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3160         if (ret) {
3161                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set MAC ACL: %d (%s)",
3162                            ret, strerror(-ret));
3163         }
3164
3165         return ret;
3166 }
3167
3168
3169 static int wpa_driver_nl80211_set_ap(void *priv,
3170                                      struct wpa_driver_ap_params *params)
3171 {
3172         struct i802_bss *bss = priv;
3173         struct wpa_driver_nl80211_data *drv = bss->drv;
3174         struct nl_msg *msg;
3175         u8 cmd = NL80211_CMD_NEW_BEACON;
3176         int ret;
3177         int beacon_set;
3178         int num_suites;
3179         int smps_mode;
3180         u32 suites[10], suite;
3181         u32 ver;
3182
3183         beacon_set = bss->beacon_set;
3184
3185         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3186                    beacon_set);
3187         if (beacon_set)
3188                 cmd = NL80211_CMD_SET_BEACON;
3189
3190         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon head",
3191                     params->head, params->head_len);
3192         wpa_hexdump(MSG_DEBUG, "nl80211: Beacon tail",
3193                     params->tail, params->tail_len);
3194         wpa_printf(MSG_DEBUG, "nl80211: ifindex=%d", bss->ifindex);
3195         wpa_printf(MSG_DEBUG, "nl80211: beacon_int=%d", params->beacon_int);
3196         wpa_printf(MSG_DEBUG, "nl80211: dtim_period=%d", params->dtim_period);
3197         wpa_hexdump_ascii(MSG_DEBUG, "nl80211: ssid",
3198                           params->ssid, params->ssid_len);
3199         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
3200             nla_put(msg, NL80211_ATTR_BEACON_HEAD, params->head_len,
3201                     params->head) ||
3202             nla_put(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len,
3203                     params->tail) ||
3204             nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
3205                         params->beacon_int) ||
3206             nla_put_u32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period) ||
3207             nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
3208                 goto fail;
3209         if (params->proberesp && params->proberesp_len) {
3210                 wpa_hexdump(MSG_DEBUG, "nl80211: proberesp (offload)",
3211                             params->proberesp, params->proberesp_len);
3212                 if (nla_put(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
3213                             params->proberesp))
3214                         goto fail;
3215         }
3216         switch (params->hide_ssid) {
3217         case NO_SSID_HIDING:
3218                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID not in use");
3219                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3220                                 NL80211_HIDDEN_SSID_NOT_IN_USE))
3221                         goto fail;
3222                 break;
3223         case HIDDEN_SSID_ZERO_LEN:
3224                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero len");
3225                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3226                                 NL80211_HIDDEN_SSID_ZERO_LEN))
3227                         goto fail;
3228                 break;
3229         case HIDDEN_SSID_ZERO_CONTENTS:
3230                 wpa_printf(MSG_DEBUG, "nl80211: hidden SSID zero contents");
3231                 if (nla_put_u32(msg, NL80211_ATTR_HIDDEN_SSID,
3232                                 NL80211_HIDDEN_SSID_ZERO_CONTENTS))
3233                         goto fail;
3234                 break;
3235         }
3236         wpa_printf(MSG_DEBUG, "nl80211: privacy=%d", params->privacy);
3237         if (params->privacy &&
3238             nla_put_flag(msg, NL80211_ATTR_PRIVACY))
3239                 goto fail;
3240         wpa_printf(MSG_DEBUG, "nl80211: auth_algs=0x%x", params->auth_algs);
3241         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
3242             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
3243                 /* Leave out the attribute */
3244         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED) {
3245                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3246                                 NL80211_AUTHTYPE_SHARED_KEY))
3247                         goto fail;
3248         } else {
3249                 if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE,
3250                                 NL80211_AUTHTYPE_OPEN_SYSTEM))
3251                         goto fail;
3252         }
3253
3254         wpa_printf(MSG_DEBUG, "nl80211: wpa_version=0x%x", params->wpa_version);
3255         ver = 0;
3256         if (params->wpa_version & WPA_PROTO_WPA)
3257                 ver |= NL80211_WPA_VERSION_1;
3258         if (params->wpa_version & WPA_PROTO_RSN)
3259                 ver |= NL80211_WPA_VERSION_2;
3260         if (ver &&
3261             nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
3262                 goto fail;
3263
3264         wpa_printf(MSG_DEBUG, "nl80211: key_mgmt_suites=0x%x",
3265                    params->key_mgmt_suites);
3266         num_suites = 0;
3267         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
3268                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
3269         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
3270                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
3271         if (num_suites &&
3272             nla_put(msg, NL80211_ATTR_AKM_SUITES, num_suites * sizeof(u32),
3273                     suites))
3274                 goto fail;
3275
3276         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
3277             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) &&
3278             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))
3279                 goto fail;
3280
3281         wpa_printf(MSG_DEBUG, "nl80211: pairwise_ciphers=0x%x",
3282                    params->pairwise_ciphers);
3283         num_suites = wpa_cipher_to_cipher_suites(params->pairwise_ciphers,
3284                                                  suites, ARRAY_SIZE(suites));
3285         if (num_suites &&
3286             nla_put(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
3287                     num_suites * sizeof(u32), suites))
3288                 goto fail;
3289
3290         wpa_printf(MSG_DEBUG, "nl80211: group_cipher=0x%x",
3291                    params->group_cipher);
3292         suite = wpa_cipher_to_cipher_suite(params->group_cipher);
3293         if (suite &&
3294             nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, suite))
3295                 goto fail;
3296
3297         switch (params->smps_mode) {
3298         case HT_CAP_INFO_SMPS_DYNAMIC:
3299                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - dynamic");
3300                 smps_mode = NL80211_SMPS_DYNAMIC;
3301                 break;
3302         case HT_CAP_INFO_SMPS_STATIC:
3303                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - static");
3304                 smps_mode = NL80211_SMPS_STATIC;
3305                 break;
3306         default:
3307                 /* invalid - fallback to smps off */
3308         case HT_CAP_INFO_SMPS_DISABLED:
3309                 wpa_printf(MSG_DEBUG, "nl80211: SMPS mode - off");
3310                 smps_mode = NL80211_SMPS_OFF;
3311                 break;
3312         }
3313         if (nla_put_u32(msg, NL80211_ATTR_SMPS_MODE, smps_mode))
3314                 goto fail;
3315
3316         if (params->beacon_ies) {
3317                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: beacon_ies",
3318                                 params->beacon_ies);
3319                 if (nla_put(msg, NL80211_ATTR_IE,
3320                             wpabuf_len(params->beacon_ies),
3321                             wpabuf_head(params->beacon_ies)))
3322                         goto fail;
3323         }
3324         if (params->proberesp_ies) {
3325                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: proberesp_ies",
3326                                 params->proberesp_ies);
3327                 if (nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
3328                             wpabuf_len(params->proberesp_ies),
3329                             wpabuf_head(params->proberesp_ies)))
3330                         goto fail;
3331         }
3332         if (params->assocresp_ies) {
3333                 wpa_hexdump_buf(MSG_DEBUG, "nl80211: assocresp_ies",
3334                                 params->assocresp_ies);
3335                 if (nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
3336                             wpabuf_len(params->assocresp_ies),
3337                             wpabuf_head(params->assocresp_ies)))
3338                         goto fail;
3339         }
3340
3341         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
3342                 wpa_printf(MSG_DEBUG, "nl80211: ap_max_inactivity=%d",
3343                            params->ap_max_inactivity);
3344                 if (nla_put_u16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
3345                                 params->ap_max_inactivity))
3346                         goto fail;
3347         }
3348
3349         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3350         if (ret) {
3351                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3352                            ret, strerror(-ret));
3353         } else {
3354                 bss->beacon_set = 1;
3355                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
3356                                 params->short_slot_time, params->ht_opmode,
3357                                 params->isolate, params->basic_rates);
3358                 if (beacon_set && params->freq &&
3359                     params->freq->bandwidth != bss->bandwidth) {
3360                         wpa_printf(MSG_DEBUG,
3361                                    "nl80211: Update BSS %s bandwidth: %d -> %d",
3362                                    bss->ifname, bss->bandwidth,
3363                                    params->freq->bandwidth);
3364                         ret = nl80211_set_channel(bss, params->freq, 1);
3365                         if (ret) {
3366                                 wpa_printf(MSG_DEBUG,
3367                                            "nl80211: Frequency set failed: %d (%s)",
3368                                            ret, strerror(-ret));
3369                         } else {
3370                                 wpa_printf(MSG_DEBUG,
3371                                            "nl80211: Frequency set succeeded for ht2040 coex");
3372                                 bss->bandwidth = params->freq->bandwidth;
3373                         }
3374                 } else if (!beacon_set) {
3375                         /*
3376                          * cfg80211 updates the driver on frequence change in AP
3377                          * mode only at the point when beaconing is started, so
3378                          * set the initial value here.
3379                          */
3380                         bss->bandwidth = params->freq->bandwidth;
3381                 }
3382         }
3383         return ret;
3384 fail:
3385         nlmsg_free(msg);
3386         return -ENOBUFS;
3387 }
3388
3389
3390 static int nl80211_put_freq_params(struct nl_msg *msg,
3391                                    const struct hostapd_freq_params *freq)
3392 {
3393         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq))
3394                 return -ENOBUFS;
3395
3396         if (freq->vht_enabled) {
3397                 enum nl80211_chan_width cw;
3398
3399                 switch (freq->bandwidth) {
3400                 case 20:
3401                         cw = NL80211_CHAN_WIDTH_20;
3402                         break;
3403                 case 40:
3404                         cw = NL80211_CHAN_WIDTH_40;
3405                         break;
3406                 case 80:
3407                         if (freq->center_freq2)
3408                                 cw = NL80211_CHAN_WIDTH_80P80;
3409                         else
3410                                 cw = NL80211_CHAN_WIDTH_80;
3411                         break;
3412                 case 160:
3413                         cw = NL80211_CHAN_WIDTH_160;
3414                         break;
3415                 default:
3416                         return -EINVAL;
3417                 }
3418
3419                 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, cw) ||
3420                     nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1,
3421                                 freq->center_freq1) ||
3422                     (freq->center_freq2 &&
3423                      nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2,
3424                                  freq->center_freq2)))
3425                         return -ENOBUFS;
3426         } else if (freq->ht_enabled) {
3427                 enum nl80211_channel_type ct;
3428
3429                 switch (freq->sec_channel_offset) {
3430                 case -1:
3431                         ct = NL80211_CHAN_HT40MINUS;
3432                         break;
3433                 case 1:
3434                         ct = NL80211_CHAN_HT40PLUS;
3435                         break;
3436                 default:
3437                         ct = NL80211_CHAN_HT20;
3438                         break;
3439                 }
3440
3441                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ct))
3442                         return -ENOBUFS;
3443         }
3444         return 0;
3445 }
3446
3447
3448 static int nl80211_set_channel(struct i802_bss *bss,
3449                                struct hostapd_freq_params *freq, int set_chan)
3450 {
3451         struct wpa_driver_nl80211_data *drv = bss->drv;
3452         struct nl_msg *msg;
3453         int ret;
3454
3455         wpa_printf(MSG_DEBUG,
3456                    "nl80211: Set freq %d (ht_enabled=%d, vht_enabled=%d, bandwidth=%d MHz, cf1=%d MHz, cf2=%d MHz)",
3457                    freq->freq, freq->ht_enabled, freq->vht_enabled,
3458                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
3459
3460         msg = nl80211_drv_msg(drv, 0, set_chan ? NL80211_CMD_SET_CHANNEL :
3461                               NL80211_CMD_SET_WIPHY);
3462         if (!msg || nl80211_put_freq_params(msg, freq) < 0) {
3463                 nlmsg_free(msg);
3464                 return -1;
3465         }
3466
3467         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3468         if (ret == 0) {
3469                 bss->freq = freq->freq;
3470                 return 0;
3471         }
3472         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3473                    "%d (%s)", freq->freq, ret, strerror(-ret));
3474         return -1;
3475 }
3476
3477
3478 static u32 sta_flags_nl80211(int flags)
3479 {
3480         u32 f = 0;
3481
3482         if (flags & WPA_STA_AUTHORIZED)
3483                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3484         if (flags & WPA_STA_WMM)
3485                 f |= BIT(NL80211_STA_FLAG_WME);
3486         if (flags & WPA_STA_SHORT_PREAMBLE)
3487                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3488         if (flags & WPA_STA_MFP)
3489                 f |= BIT(NL80211_STA_FLAG_MFP);
3490         if (flags & WPA_STA_TDLS_PEER)
3491                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
3492         if (flags & WPA_STA_AUTHENTICATED)
3493                 f |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
3494
3495         return f;
3496 }
3497
3498
3499 #ifdef CONFIG_MESH
3500 static u32 sta_plink_state_nl80211(enum mesh_plink_state state)
3501 {
3502         switch (state) {
3503         case PLINK_LISTEN:
3504                 return NL80211_PLINK_LISTEN;
3505         case PLINK_OPEN_SENT:
3506                 return NL80211_PLINK_OPN_SNT;
3507         case PLINK_OPEN_RCVD:
3508                 return NL80211_PLINK_OPN_RCVD;
3509         case PLINK_CNF_RCVD:
3510                 return NL80211_PLINK_CNF_RCVD;
3511         case PLINK_ESTAB:
3512                 return NL80211_PLINK_ESTAB;
3513         case PLINK_HOLDING:
3514                 return NL80211_PLINK_HOLDING;
3515         case PLINK_BLOCKED:
3516                 return NL80211_PLINK_BLOCKED;
3517         default:
3518                 wpa_printf(MSG_ERROR, "nl80211: Invalid mesh plink state %d",
3519                            state);
3520         }
3521         return -1;
3522 }
3523 #endif /* CONFIG_MESH */
3524
3525
3526 static int wpa_driver_nl80211_sta_add(void *priv,
3527                                       struct hostapd_sta_add_params *params)
3528 {
3529         struct i802_bss *bss = priv;
3530         struct wpa_driver_nl80211_data *drv = bss->drv;
3531         struct nl_msg *msg;
3532         struct nl80211_sta_flag_update upd;
3533         int ret = -ENOBUFS;
3534
3535         if ((params->flags & WPA_STA_TDLS_PEER) &&
3536             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
3537                 return -EOPNOTSUPP;
3538
3539         wpa_printf(MSG_DEBUG, "nl80211: %s STA " MACSTR,
3540                    params->set ? "Set" : "Add", MAC2STR(params->addr));
3541         msg = nl80211_bss_msg(bss, 0, params->set ? NL80211_CMD_SET_STATION :
3542                               NL80211_CMD_NEW_STATION);
3543         if (!msg || nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr))
3544                 goto fail;
3545
3546         if (!params->set || (params->flags & WPA_STA_TDLS_PEER)) {
3547                 wpa_hexdump(MSG_DEBUG, "  * supported rates",
3548                             params->supp_rates, params->supp_rates_len);
3549                 wpa_printf(MSG_DEBUG, "  * capability=0x%x",
3550                            params->capability);
3551                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_RATES,
3552                             params->supp_rates_len, params->supp_rates) ||
3553                     nla_put_u16(msg, NL80211_ATTR_STA_CAPABILITY,
3554                                 params->capability))
3555                         goto fail;
3556
3557                 if (params->ht_capabilities) {
3558                         wpa_hexdump(MSG_DEBUG, "  * ht_capabilities",
3559                                     (u8 *) params->ht_capabilities,
3560                                     sizeof(*params->ht_capabilities));
3561                         if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY,
3562                                     sizeof(*params->ht_capabilities),
3563                                     params->ht_capabilities))
3564                                 goto fail;
3565                 }
3566
3567                 if (params->vht_capabilities) {
3568                         wpa_hexdump(MSG_DEBUG, "  * vht_capabilities",
3569                                     (u8 *) params->vht_capabilities,
3570                                     sizeof(*params->vht_capabilities));
3571                         if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY,
3572                                     sizeof(*params->vht_capabilities),
3573                                     params->vht_capabilities))
3574                                 goto fail;
3575                 }
3576
3577                 if (params->ext_capab) {
3578                         wpa_hexdump(MSG_DEBUG, "  * ext_capab",
3579                                     params->ext_capab, params->ext_capab_len);
3580                         if (nla_put(msg, NL80211_ATTR_STA_EXT_CAPABILITY,
3581                                     params->ext_capab_len, params->ext_capab))
3582                                 goto fail;
3583                 }
3584         }
3585         if (!params->set) {
3586                 if (params->aid) {
3587                         wpa_printf(MSG_DEBUG, "  * aid=%u", params->aid);
3588                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, params->aid))
3589                                 goto fail;
3590                 } else {
3591                         /*
3592                          * cfg80211 validates that AID is non-zero, so we have
3593                          * to make this a non-zero value for the TDLS case where
3594                          * a dummy STA entry is used for now.
3595                          */
3596                         wpa_printf(MSG_DEBUG, "  * aid=1 (TDLS workaround)");
3597                         if (nla_put_u16(msg, NL80211_ATTR_STA_AID, 1))
3598                                 goto fail;
3599                 }
3600                 wpa_printf(MSG_DEBUG, "  * listen_interval=%u",
3601                            params->listen_interval);
3602                 if (nla_put_u16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3603                                 params->listen_interval))
3604                         goto fail;
3605         } else if (params->aid && (params->flags & WPA_STA_TDLS_PEER)) {
3606                 wpa_printf(MSG_DEBUG, "  * peer_aid=%u", params->aid);
3607                 if (nla_put_u16(msg, NL80211_ATTR_PEER_AID, params->aid))
3608                         goto fail;
3609         }
3610
3611         if (params->vht_opmode_enabled) {
3612                 wpa_printf(MSG_DEBUG, "  * opmode=%u", params->vht_opmode);
3613                 if (nla_put_u8(msg, NL80211_ATTR_OPMODE_NOTIF,
3614                                params->vht_opmode))
3615                         goto fail;
3616         }
3617
3618         if (params->supp_channels) {
3619                 wpa_hexdump(MSG_DEBUG, "  * supported channels",
3620                             params->supp_channels, params->supp_channels_len);
3621                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_CHANNELS,
3622                             params->supp_channels_len, params->supp_channels))
3623                         goto fail;
3624         }
3625
3626         if (params->supp_oper_classes) {
3627                 wpa_hexdump(MSG_DEBUG, "  * supported operating classes",
3628                             params->supp_oper_classes,
3629                             params->supp_oper_classes_len);
3630                 if (nla_put(msg, NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
3631                             params->supp_oper_classes_len,
3632                             params->supp_oper_classes))
3633                         goto fail;
3634         }
3635
3636         os_memset(&upd, 0, sizeof(upd));
3637         upd.set = sta_flags_nl80211(params->flags);
3638         upd.mask = upd.set | sta_flags_nl80211(params->flags_mask);
3639         wpa_printf(MSG_DEBUG, "  * flags set=0x%x mask=0x%x",
3640                    upd.set, upd.mask);
3641         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
3642                 goto fail;
3643
3644 #ifdef CONFIG_MESH
3645         if (params->plink_state &&
3646             nla_put_u8(msg, NL80211_ATTR_STA_PLINK_STATE,
3647                        sta_plink_state_nl80211(params->plink_state)))
3648                 goto fail;
3649 #endif /* CONFIG_MESH */
3650
3651         if (params->flags & WPA_STA_WMM) {
3652                 struct nlattr *wme = nla_nest_start(msg, NL80211_ATTR_STA_WME);
3653
3654                 wpa_printf(MSG_DEBUG, "  * qosinfo=0x%x", params->qosinfo);
3655                 if (!wme ||
3656                     nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
3657                                params->qosinfo & WMM_QOSINFO_STA_AC_MASK) ||
3658                     nla_put_u8(msg, NL80211_STA_WME_MAX_SP,
3659                                (params->qosinfo >> WMM_QOSINFO_STA_SP_SHIFT) &
3660                                WMM_QOSINFO_STA_SP_MASK))
3661                         goto fail;
3662                 nla_nest_end(msg, wme);
3663         }
3664
3665         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3666         msg = NULL;
3667         if (ret)
3668                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
3669                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
3670                            strerror(-ret));
3671         if (ret == -EEXIST)
3672                 ret = 0;
3673 fail:
3674         nlmsg_free(msg);
3675         return ret;
3676 }
3677
3678
3679 static void rtnl_neigh_delete_fdb_entry(struct i802_bss *bss, const u8 *addr)
3680 {
3681 #ifdef CONFIG_LIBNL3_ROUTE
3682         struct wpa_driver_nl80211_data *drv = bss->drv;
3683         struct rtnl_neigh *rn;
3684         struct nl_addr *nl_addr;
3685         int err;
3686
3687         rn = rtnl_neigh_alloc();
3688         if (!rn)
3689                 return;
3690
3691         rtnl_neigh_set_family(rn, AF_BRIDGE);
3692         rtnl_neigh_set_ifindex(rn, bss->ifindex);
3693         nl_addr = nl_addr_build(AF_BRIDGE, (void *) addr, ETH_ALEN);
3694         if (!nl_addr) {
3695                 rtnl_neigh_put(rn);
3696                 return;
3697         }
3698         rtnl_neigh_set_lladdr(rn, nl_addr);
3699
3700         err = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
3701         if (err < 0) {
3702                 wpa_printf(MSG_DEBUG, "nl80211: bridge FDB entry delete for "
3703                            MACSTR " ifindex=%d failed: %s", MAC2STR(addr),
3704                            bss->ifindex, nl_geterror(err));
3705         } else {
3706                 wpa_printf(MSG_DEBUG, "nl80211: deleted bridge FDB entry for "
3707                            MACSTR, MAC2STR(addr));
3708         }
3709
3710         nl_addr_put(nl_addr);
3711         rtnl_neigh_put(rn);
3712 #endif /* CONFIG_LIBNL3_ROUTE */
3713 }
3714
3715
3716 static int wpa_driver_nl80211_sta_remove(struct i802_bss *bss, const u8 *addr,
3717                                          int deauth, u16 reason_code)
3718 {
3719         struct wpa_driver_nl80211_data *drv = bss->drv;
3720         struct nl_msg *msg;
3721         int ret;
3722
3723         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION)) ||
3724             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
3725             (deauth == 0 &&
3726              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3727                         WLAN_FC_STYPE_DISASSOC)) ||
3728             (deauth == 1 &&
3729              nla_put_u8(msg, NL80211_ATTR_MGMT_SUBTYPE,
3730                         WLAN_FC_STYPE_DEAUTH)) ||
3731             (reason_code &&
3732              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) {
3733                 nlmsg_free(msg);
3734                 return -ENOBUFS;
3735         }
3736
3737         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3738         wpa_printf(MSG_DEBUG, "nl80211: sta_remove -> DEL_STATION %s " MACSTR
3739                    " --> %d (%s)",
3740                    bss->ifname, MAC2STR(addr), ret, strerror(-ret));
3741
3742         if (drv->rtnl_sk)
3743                 rtnl_neigh_delete_fdb_entry(bss, addr);
3744
3745         if (ret == -ENOENT)
3746                 return 0;
3747         return ret;
3748 }
3749
3750
3751 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
3752 {
3753         struct nl_msg *msg;
3754         struct wpa_driver_nl80211_data *drv2;
3755
3756         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3757
3758         /* stop listening for EAPOL on this interface */
3759         dl_list_for_each(drv2, &drv->global->interfaces,
3760                          struct wpa_driver_nl80211_data, list)
3761                 del_ifidx(drv2, ifidx);
3762
3763         msg = nl80211_ifindex_msg(drv, ifidx, 0, NL80211_CMD_DEL_INTERFACE);
3764         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3765                 return;
3766         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3767 }
3768
3769
3770 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
3771 {
3772         switch (mode) {
3773         case NL80211_IFTYPE_ADHOC:
3774                 return "ADHOC";
3775         case NL80211_IFTYPE_STATION:
3776                 return "STATION";
3777         case NL80211_IFTYPE_AP:
3778                 return "AP";
3779         case NL80211_IFTYPE_AP_VLAN:
3780                 return "AP_VLAN";
3781         case NL80211_IFTYPE_WDS:
3782                 return "WDS";
3783         case NL80211_IFTYPE_MONITOR:
3784                 return "MONITOR";
3785         case NL80211_IFTYPE_MESH_POINT:
3786                 return "MESH_POINT";
3787         case NL80211_IFTYPE_P2P_CLIENT:
3788                 return "P2P_CLIENT";
3789         case NL80211_IFTYPE_P2P_GO:
3790                 return "P2P_GO";
3791         case NL80211_IFTYPE_P2P_DEVICE:
3792                 return "P2P_DEVICE";
3793         default:
3794                 return "unknown";
3795         }
3796 }
3797
3798
3799 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3800                                      const char *ifname,
3801                                      enum nl80211_iftype iftype,
3802                                      const u8 *addr, int wds,
3803                                      int (*handler)(struct nl_msg *, void *),
3804                                      void *arg)
3805 {
3806         struct nl_msg *msg;
3807         int ifidx;
3808         int ret = -ENOBUFS;
3809
3810         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
3811                    iftype, nl80211_iftype_str(iftype));
3812
3813         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_NEW_INTERFACE);
3814         if (!msg ||
3815             nla_put_string(msg, NL80211_ATTR_IFNAME, ifname) ||
3816             nla_put_u32(msg, NL80211_ATTR_IFTYPE, iftype))
3817                 goto fail;
3818
3819         if (iftype == NL80211_IFTYPE_MONITOR) {
3820                 struct nlattr *flags;
3821
3822                 flags = nla_nest_start(msg, NL80211_ATTR_MNTR_FLAGS);
3823                 if (!flags ||
3824                     nla_put_flag(msg, NL80211_MNTR_FLAG_COOK_FRAMES))
3825                         goto fail;
3826
3827                 nla_nest_end(msg, flags);
3828         } else if (wds) {
3829                 if (nla_put_u8(msg, NL80211_ATTR_4ADDR, wds))
3830                         goto fail;
3831         }
3832
3833         /*
3834          * Tell cfg80211 that the interface belongs to the socket that created
3835          * it, and the interface should be deleted when the socket is closed.
3836          */
3837         if (nla_put_flag(msg, NL80211_ATTR_IFACE_SOCKET_OWNER))
3838                 goto fail;
3839
3840         ret = send_and_recv_msgs(drv, msg, handler, arg);
3841         msg = NULL;
3842         if (ret) {
3843         fail:
3844                 nlmsg_free(msg);
3845                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3846                            ifname, ret, strerror(-ret));
3847                 return ret;
3848         }
3849
3850         if (iftype == NL80211_IFTYPE_P2P_DEVICE)
3851                 return 0;
3852
3853         ifidx = if_nametoindex(ifname);
3854         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3855                    ifname, ifidx);
3856
3857         if (ifidx <= 0)
3858                 return -1;
3859
3860         /*
3861          * Some virtual interfaces need to process EAPOL packets and events on
3862          * the parent interface. This is used mainly with hostapd.
3863          */
3864         if (drv->hostapd ||
3865             iftype == NL80211_IFTYPE_AP_VLAN ||
3866             iftype == NL80211_IFTYPE_WDS ||
3867             iftype == NL80211_IFTYPE_MONITOR) {
3868                 /* start listening for EAPOL on this interface */
3869                 add_ifidx(drv, ifidx);
3870         }
3871
3872         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3873             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
3874                 nl80211_remove_iface(drv, ifidx);
3875                 return -1;
3876         }
3877
3878         return ifidx;
3879 }
3880
3881
3882 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3883                          const char *ifname, enum nl80211_iftype iftype,
3884                          const u8 *addr, int wds,
3885                          int (*handler)(struct nl_msg *, void *),
3886                          void *arg, int use_existing)
3887 {
3888         int ret;
3889
3890         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds, handler,
3891                                         arg);
3892
3893         /* if error occurred and interface exists already */
3894         if (ret == -ENFILE && if_nametoindex(ifname)) {
3895                 if (use_existing) {
3896                         wpa_printf(MSG_DEBUG, "nl80211: Continue using existing interface %s",
3897                                    ifname);
3898                         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3899                             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
3900                                                addr) < 0 &&
3901                             (linux_set_iface_flags(drv->global->ioctl_sock,
3902                                                    ifname, 0) < 0 ||
3903                              linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
3904                                                 addr) < 0 ||
3905                              linux_set_iface_flags(drv->global->ioctl_sock,
3906                                                    ifname, 1) < 0))
3907                                         return -1;
3908                         return -ENFILE;
3909                 }
3910                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3911
3912                 /* Try to remove the interface that was already there. */
3913                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3914
3915                 /* Try to create the interface again */
3916                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3917                                                 wds, handler, arg);
3918         }
3919
3920         if (ret >= 0 && is_p2p_net_interface(iftype)) {
3921                 wpa_printf(MSG_DEBUG,
3922                            "nl80211: Interface %s created for P2P - disable 11b rates",
3923                            ifname);
3924                 nl80211_disable_11b_rates(drv, ret, 1);
3925         }
3926
3927         return ret;
3928 }
3929
3930
3931 static int nl80211_setup_ap(struct i802_bss *bss)
3932 {
3933         struct wpa_driver_nl80211_data *drv = bss->drv;
3934
3935         wpa_printf(MSG_DEBUG, "nl80211: Setup AP(%s) - device_ap_sme=%d use_monitor=%d",
3936                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
3937
3938         /*
3939          * Disable Probe Request reporting unless we need it in this way for
3940          * devices that include the AP SME, in the other case (unless using
3941          * monitor iface) we'll get it through the nl_mgmt socket instead.
3942          */
3943         if (!drv->device_ap_sme)
3944                 wpa_driver_nl80211_probe_req_report(bss, 0);
3945
3946         if (!drv->device_ap_sme && !drv->use_monitor)
3947                 if (nl80211_mgmt_subscribe_ap(bss))
3948                         return -1;
3949
3950         if (drv->device_ap_sme && !drv->use_monitor)
3951                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
3952                         return -1;
3953
3954         if (!drv->device_ap_sme && drv->use_monitor &&
3955             nl80211_create_monitor_interface(drv) &&
3956             !drv->device_ap_sme)
3957                 return -1;
3958
3959         if (drv->device_ap_sme &&
3960             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
3961                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
3962                            "Probe Request frame reporting in AP mode");
3963                 /* Try to survive without this */
3964         }
3965
3966         return 0;
3967 }
3968
3969
3970 static void nl80211_teardown_ap(struct i802_bss *bss)
3971 {
3972         struct wpa_driver_nl80211_data *drv = bss->drv;
3973
3974         wpa_printf(MSG_DEBUG, "nl80211: Teardown AP(%s) - device_ap_sme=%d use_monitor=%d",
3975                    bss->ifname, drv->device_ap_sme, drv->use_monitor);
3976         if (drv->device_ap_sme) {
3977                 wpa_driver_nl80211_probe_req_report(bss, 0);
3978                 if (!drv->use_monitor)
3979                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
3980         } else if (drv->use_monitor)
3981                 nl80211_remove_monitor_interface(drv);
3982         else
3983                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
3984
3985         bss->beacon_set = 0;
3986 }
3987
3988
3989 static int nl80211_send_eapol_data(struct i802_bss *bss,
3990                                    const u8 *addr, const u8 *data,
3991                                    size_t data_len)
3992 {
3993         struct sockaddr_ll ll;
3994         int ret;
3995
3996         if (bss->drv->eapol_tx_sock < 0) {
3997                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
3998                 return -1;
3999         }
4000
4001         os_memset(&ll, 0, sizeof(ll));
4002         ll.sll_family = AF_PACKET;
4003         ll.sll_ifindex = bss->ifindex;
4004         ll.sll_protocol = htons(ETH_P_PAE);
4005         ll.sll_halen = ETH_ALEN;
4006         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
4007         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
4008                      (struct sockaddr *) &ll, sizeof(ll));
4009         if (ret < 0)
4010                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
4011                            strerror(errno));
4012
4013         return ret;
4014 }
4015
4016
4017 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
4018
4019 static int wpa_driver_nl80211_hapd_send_eapol(
4020         void *priv, const u8 *addr, const u8 *data,
4021         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
4022 {
4023         struct i802_bss *bss = priv;
4024         struct wpa_driver_nl80211_data *drv = bss->drv;
4025         struct ieee80211_hdr *hdr;
4026         size_t len;
4027         u8 *pos;
4028         int res;
4029         int qos = flags & WPA_STA_WMM;
4030
4031         if (drv->device_ap_sme || !drv->use_monitor)
4032                 return nl80211_send_eapol_data(bss, addr, data, data_len);
4033
4034         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
4035                 data_len;
4036         hdr = os_zalloc(len);
4037         if (hdr == NULL) {
4038                 wpa_printf(MSG_INFO, "nl80211: Failed to allocate EAPOL buffer(len=%lu)",
4039                            (unsigned long) len);
4040                 return -1;
4041         }
4042
4043         hdr->frame_control =
4044                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
4045         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
4046         if (encrypt)
4047                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
4048         if (qos) {
4049                 hdr->frame_control |=
4050                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
4051         }
4052
4053         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
4054         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
4055         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
4056         pos = (u8 *) (hdr + 1);
4057
4058         if (qos) {
4059                 /* Set highest priority in QoS header */
4060                 pos[0] = 7;
4061                 pos[1] = 0;
4062                 pos += 2;
4063         }
4064
4065         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
4066         pos += sizeof(rfc1042_header);
4067         WPA_PUT_BE16(pos, ETH_P_PAE);
4068         pos += 2;
4069         memcpy(pos, data, data_len);
4070
4071         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
4072                                             0, 0, 0, 0);
4073         if (res < 0) {
4074                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
4075                            "failed: %d (%s)",
4076                            (unsigned long) len, errno, strerror(errno));
4077         }
4078         os_free(hdr);
4079
4080         return res;
4081 }
4082
4083
4084 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
4085                                             int total_flags,
4086                                             int flags_or, int flags_and)
4087 {
4088         struct i802_bss *bss = priv;
4089         struct nl_msg *msg;
4090         struct nlattr *flags;
4091         struct nl80211_sta_flag_update upd;
4092
4093         wpa_printf(MSG_DEBUG, "nl80211: Set STA flags - ifname=%s addr=" MACSTR
4094                    " total_flags=0x%x flags_or=0x%x flags_and=0x%x authorized=%d",
4095                    bss->ifname, MAC2STR(addr), total_flags, flags_or, flags_and,
4096                    !!(total_flags & WPA_STA_AUTHORIZED));
4097
4098         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4099             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
4100                 goto fail;
4101
4102         /*
4103          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
4104          * can be removed eventually.
4105          */
4106         flags = nla_nest_start(msg, NL80211_ATTR_STA_FLAGS);
4107         if (!flags ||
4108             ((total_flags & WPA_STA_AUTHORIZED) &&
4109              nla_put_flag(msg, NL80211_STA_FLAG_AUTHORIZED)) ||
4110             ((total_flags & WPA_STA_WMM) &&
4111              nla_put_flag(msg, NL80211_STA_FLAG_WME)) ||
4112             ((total_flags & WPA_STA_SHORT_PREAMBLE) &&
4113              nla_put_flag(msg, NL80211_STA_FLAG_SHORT_PREAMBLE)) ||
4114             ((total_flags & WPA_STA_MFP) &&
4115              nla_put_flag(msg, NL80211_STA_FLAG_MFP)) ||
4116             ((total_flags & WPA_STA_TDLS_PEER) &&
4117              nla_put_flag(msg, NL80211_STA_FLAG_TDLS_PEER)))
4118                 goto fail;
4119
4120         nla_nest_end(msg, flags);
4121
4122         os_memset(&upd, 0, sizeof(upd));
4123         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
4124         upd.set = sta_flags_nl80211(flags_or);
4125         if (nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd))
4126                 goto fail;
4127
4128         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
4129 fail:
4130         nlmsg_free(msg);
4131         return -ENOBUFS;
4132 }
4133
4134
4135 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
4136                                  struct wpa_driver_associate_params *params)
4137 {
4138         enum nl80211_iftype nlmode, old_mode;
4139
4140         if (params->p2p) {
4141                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
4142                            "group (GO)");
4143                 nlmode = NL80211_IFTYPE_P2P_GO;
4144         } else
4145                 nlmode = NL80211_IFTYPE_AP;
4146
4147         old_mode = drv->nlmode;
4148         if (wpa_driver_nl80211_set_mode(drv->first_bss, nlmode)) {
4149                 nl80211_remove_monitor_interface(drv);
4150                 return -1;
4151         }
4152
4153         if (nl80211_set_channel(drv->first_bss, &params->freq, 0)) {
4154                 if (old_mode != nlmode)
4155                         wpa_driver_nl80211_set_mode(drv->first_bss, old_mode);
4156                 nl80211_remove_monitor_interface(drv);
4157                 return -1;
4158         }
4159
4160         return 0;
4161 }
4162
4163
4164 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv,
4165                               int reset_mode)
4166 {
4167         struct nl_msg *msg;
4168         int ret;
4169
4170         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_IBSS);
4171         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4172         if (ret) {
4173                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4174                            "(%s)", ret, strerror(-ret));
4175         } else {
4176                 wpa_printf(MSG_DEBUG,
4177                            "nl80211: Leave IBSS request sent successfully");
4178         }
4179
4180         if (reset_mode &&
4181             wpa_driver_nl80211_set_mode(drv->first_bss,
4182                                         NL80211_IFTYPE_STATION)) {
4183                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4184                            "station mode");
4185         }
4186
4187         return ret;
4188 }
4189
4190
4191 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4192                                    struct wpa_driver_associate_params *params)
4193 {
4194         struct nl_msg *msg;
4195         int ret = -1;
4196         int count = 0;
4197
4198         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4199
4200         if (wpa_driver_nl80211_set_mode_ibss(drv->first_bss, &params->freq)) {
4201                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4202                            "IBSS mode");
4203                 return -1;
4204         }
4205
4206 retry:
4207         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_IBSS)) ||
4208             params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4209                 goto fail;
4210
4211         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4212                           params->ssid, params->ssid_len);
4213         if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len, params->ssid))
4214                 goto fail;
4215         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4216         drv->ssid_len = params->ssid_len;
4217
4218         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4219         wpa_printf(MSG_DEBUG, "  * ht_enabled=%d", params->freq.ht_enabled);
4220         wpa_printf(MSG_DEBUG, "  * sec_channel_offset=%d",
4221                    params->freq.sec_channel_offset);
4222         wpa_printf(MSG_DEBUG, "  * vht_enabled=%d", params->freq.vht_enabled);
4223         wpa_printf(MSG_DEBUG, "  * center_freq1=%d", params->freq.center_freq1);
4224         wpa_printf(MSG_DEBUG, "  * center_freq2=%d", params->freq.center_freq2);
4225         wpa_printf(MSG_DEBUG, "  * bandwidth=%d", params->freq.bandwidth);
4226         if (nl80211_put_freq_params(msg, &params->freq) < 0)
4227                 goto fail;
4228
4229         if (params->beacon_int > 0) {
4230                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", params->beacon_int);
4231                 if (nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
4232                                 params->beacon_int))
4233                         goto fail;
4234         }
4235
4236         ret = nl80211_set_conn_keys(params, msg);
4237         if (ret)
4238                 goto fail;
4239
4240         if (params->bssid && params->fixed_bssid) {
4241                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
4242                            MAC2STR(params->bssid));
4243                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4244                         goto fail;
4245         }
4246
4247         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4248             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4249             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4250             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256) {
4251                 wpa_printf(MSG_DEBUG, "  * control port");
4252                 if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4253                         goto fail;
4254         }
4255
4256         if (params->wpa_ie) {
4257                 wpa_hexdump(MSG_DEBUG,
4258                             "  * Extra IEs for Beacon/Probe Response frames",
4259                             params->wpa_ie, params->wpa_ie_len);
4260                 if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4261                             params->wpa_ie))
4262                         goto fail;
4263         }
4264
4265         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4266         msg = NULL;
4267         if (ret) {
4268                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4269                            ret, strerror(-ret));
4270                 count++;
4271                 if (ret == -EALREADY && count == 1) {
4272                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4273                                    "forced leave");
4274                         nl80211_leave_ibss(drv, 0);
4275                         nlmsg_free(msg);
4276                         goto retry;
4277                 }
4278         } else {
4279                 wpa_printf(MSG_DEBUG,
4280                            "nl80211: Join IBSS request sent successfully");
4281         }
4282
4283 fail:
4284         nlmsg_free(msg);
4285         return ret;
4286 }
4287
4288
4289 static int nl80211_connect_common(struct wpa_driver_nl80211_data *drv,
4290                                   struct wpa_driver_associate_params *params,
4291                                   struct nl_msg *msg)
4292 {
4293         if (params->bssid) {
4294                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4295                            MAC2STR(params->bssid));
4296                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid))
4297                         return -1;
4298         }
4299
4300         if (params->bssid_hint) {
4301                 wpa_printf(MSG_DEBUG, "  * bssid_hint=" MACSTR,
4302                            MAC2STR(params->bssid_hint));
4303                 if (nla_put(msg, NL80211_ATTR_MAC_HINT, ETH_ALEN,
4304                             params->bssid_hint))
4305                         return -1;
4306         }
4307
4308         if (params->freq.freq) {
4309                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq.freq);
4310                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
4311                                 params->freq.freq))
4312                         return -1;
4313                 drv->assoc_freq = params->freq.freq;
4314         } else
4315                 drv->assoc_freq = 0;
4316
4317         if (params->freq_hint) {
4318                 wpa_printf(MSG_DEBUG, "  * freq_hint=%d", params->freq_hint);
4319                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_HINT,
4320                                 params->freq_hint))
4321                         return -1;
4322         }
4323
4324         if (params->bg_scan_period >= 0) {
4325                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
4326                            params->bg_scan_period);
4327                 if (nla_put_u16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
4328                                 params->bg_scan_period))
4329                         return -1;
4330         }
4331
4332         if (params->ssid) {
4333                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4334                                   params->ssid, params->ssid_len);
4335                 if (nla_put(msg, NL80211_ATTR_SSID, params->ssid_len,
4336                             params->ssid))
4337                         return -1;
4338                 if (params->ssid_len > sizeof(drv->ssid))
4339                         return -1;
4340                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4341                 drv->ssid_len = params->ssid_len;
4342         }
4343
4344         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4345         if (params->wpa_ie &&
4346             nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len, params->wpa_ie))
4347                 return -1;
4348
4349         if (params->wpa_proto) {
4350                 enum nl80211_wpa_versions ver = 0;
4351
4352                 if (params->wpa_proto & WPA_PROTO_WPA)
4353                         ver |= NL80211_WPA_VERSION_1;
4354                 if (params->wpa_proto & WPA_PROTO_RSN)
4355                         ver |= NL80211_WPA_VERSION_2;
4356
4357                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
4358                 if (nla_put_u32(msg, NL80211_ATTR_WPA_VERSIONS, ver))
4359                         return -1;
4360         }
4361
4362         if (params->pairwise_suite != WPA_CIPHER_NONE) {
4363                 u32 cipher = wpa_cipher_to_cipher_suite(params->pairwise_suite);
4364                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
4365                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
4366                                 cipher))
4367                         return -1;
4368         }
4369
4370         if (params->group_suite == WPA_CIPHER_GTK_NOT_USED &&
4371             !(drv->capa.enc & WPA_DRIVER_CAPA_ENC_GTK_NOT_USED)) {
4372                 /*
4373                  * This is likely to work even though many drivers do not
4374                  * advertise support for operations without GTK.
4375                  */
4376                 wpa_printf(MSG_DEBUG, "  * skip group cipher configuration for GTK_NOT_USED due to missing driver support advertisement");
4377         } else if (params->group_suite != WPA_CIPHER_NONE) {
4378                 u32 cipher = wpa_cipher_to_cipher_suite(params->group_suite);
4379                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
4380                 if (nla_put_u32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher))
4381                         return -1;
4382         }
4383
4384         if (params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
4385             params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4386             params->key_mgmt_suite == WPA_KEY_MGMT_FT_IEEE8021X ||
4387             params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK ||
4388             params->key_mgmt_suite == WPA_KEY_MGMT_CCKM ||
4389             params->key_mgmt_suite == WPA_KEY_MGMT_OSEN ||
4390             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
4391             params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4392             params->key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
4393                 int mgmt = WLAN_AKM_SUITE_PSK;
4394
4395                 switch (params->key_mgmt_suite) {
4396                 case WPA_KEY_MGMT_CCKM:
4397                         mgmt = WLAN_AKM_SUITE_CCKM;
4398                         break;
4399                 case WPA_KEY_MGMT_IEEE8021X:
4400                         mgmt = WLAN_AKM_SUITE_8021X;
4401                         break;
4402                 case WPA_KEY_MGMT_FT_IEEE8021X:
4403                         mgmt = WLAN_AKM_SUITE_FT_8021X;
4404                         break;
4405                 case WPA_KEY_MGMT_FT_PSK:
4406                         mgmt = WLAN_AKM_SUITE_FT_PSK;
4407                         break;
4408                 case WPA_KEY_MGMT_IEEE8021X_SHA256:
4409                         mgmt = WLAN_AKM_SUITE_8021X_SHA256;
4410                         break;
4411                 case WPA_KEY_MGMT_PSK_SHA256:
4412                         mgmt = WLAN_AKM_SUITE_PSK_SHA256;
4413                         break;
4414                 case WPA_KEY_MGMT_OSEN:
4415                         mgmt = WLAN_AKM_SUITE_OSEN;
4416                         break;
4417                 case WPA_KEY_MGMT_IEEE8021X_SUITE_B:
4418                         mgmt = WLAN_AKM_SUITE_8021X_SUITE_B;
4419                         break;
4420                 case WPA_KEY_MGMT_PSK:
4421                 default:
4422                         mgmt = WLAN_AKM_SUITE_PSK;
4423                         break;
4424                 }
4425                 wpa_printf(MSG_DEBUG, "  * akm=0x%x", mgmt);
4426                 if (nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, mgmt))
4427                         return -1;
4428         }
4429
4430         if (nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT))
4431                 return -1;
4432
4433         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED &&
4434             nla_put_u32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED))
4435                 return -1;
4436
4437         if (params->rrm_used) {
4438                 u32 drv_rrm_flags = drv->capa.rrm_flags;
4439                 if (!(drv_rrm_flags &
4440                       WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
4441                     !(drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET) ||
4442                     nla_put_flag(msg, NL80211_ATTR_USE_RRM))
4443                         return -1;
4444         }
4445
4446         if (params->disable_ht && nla_put_flag(msg, NL80211_ATTR_DISABLE_HT))
4447                 return -1;
4448
4449         if (params->htcaps && params->htcaps_mask) {
4450                 int sz = sizeof(struct ieee80211_ht_capabilities);
4451                 wpa_hexdump(MSG_DEBUG, "  * htcaps", params->htcaps, sz);
4452                 wpa_hexdump(MSG_DEBUG, "  * htcaps_mask",
4453                             params->htcaps_mask, sz);
4454                 if (nla_put(msg, NL80211_ATTR_HT_CAPABILITY, sz,
4455                             params->htcaps) ||
4456                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
4457                             params->htcaps_mask))
4458                         return -1;
4459         }
4460
4461 #ifdef CONFIG_VHT_OVERRIDES
4462         if (params->disable_vht) {
4463                 wpa_printf(MSG_DEBUG, "  * VHT disabled");
4464                 if (nla_put_flag(msg, NL80211_ATTR_DISABLE_VHT))
4465                         return -1;
4466         }
4467
4468         if (params->vhtcaps && params->vhtcaps_mask) {
4469                 int sz = sizeof(struct ieee80211_vht_capabilities);
4470                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps", params->vhtcaps, sz);
4471                 wpa_hexdump(MSG_DEBUG, "  * vhtcaps_mask",
4472                             params->vhtcaps_mask, sz);
4473                 if (nla_put(msg, NL80211_ATTR_VHT_CAPABILITY, sz,
4474                             params->vhtcaps) ||
4475                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, sz,
4476                             params->vhtcaps_mask))
4477                         return -1;
4478         }
4479 #endif /* CONFIG_VHT_OVERRIDES */
4480
4481         if (params->p2p)
4482                 wpa_printf(MSG_DEBUG, "  * P2P group");
4483
4484         return 0;
4485 }
4486
4487
4488 static int wpa_driver_nl80211_try_connect(
4489         struct wpa_driver_nl80211_data *drv,
4490         struct wpa_driver_associate_params *params)
4491 {
4492         struct nl_msg *msg;
4493         enum nl80211_auth_type type;
4494         int ret;
4495         int algs;
4496
4497         if (params->req_key_mgmt_offload && params->psk &&
4498             (params->key_mgmt_suite == WPA_KEY_MGMT_PSK ||
4499              params->key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
4500              params->key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
4501                 wpa_printf(MSG_DEBUG, "nl80211: Key management set PSK");
4502                 ret = issue_key_mgmt_set_key(drv, params->psk, 32);
4503                 if (ret)
4504                         return ret;
4505         }
4506
4507         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4508         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_CONNECT);
4509         if (!msg)
4510                 return -1;
4511
4512         ret = nl80211_connect_common(drv, params, msg);
4513         if (ret)
4514                 goto fail;
4515
4516         algs = 0;
4517         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4518                 algs++;
4519         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4520                 algs++;
4521         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4522                 algs++;
4523         if (algs > 1) {
4524                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
4525                            "selection");
4526                 goto skip_auth_type;
4527         }
4528
4529         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4530                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4531         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4532                 type = NL80211_AUTHTYPE_SHARED_KEY;
4533         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4534                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4535         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4536                 type = NL80211_AUTHTYPE_FT;
4537         else
4538                 goto fail;
4539
4540         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4541         if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
4542                 goto fail;
4543
4544 skip_auth_type:
4545         ret = nl80211_set_conn_keys(params, msg);
4546         if (ret)
4547                 goto fail;
4548
4549         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4550         msg = NULL;
4551         if (ret) {
4552                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4553                            "(%s)", ret, strerror(-ret));
4554         } else {
4555                 wpa_printf(MSG_DEBUG,
4556                            "nl80211: Connect request send successfully");
4557         }
4558
4559 fail:
4560         nlmsg_free(msg);
4561         return ret;
4562
4563 }
4564
4565
4566 static int wpa_driver_nl80211_connect(
4567         struct wpa_driver_nl80211_data *drv,
4568         struct wpa_driver_associate_params *params)
4569 {
4570         int ret;
4571
4572         /* Store the connection attempted bssid for future use */
4573         if (params->bssid)
4574                 os_memcpy(drv->auth_attempt_bssid, params->bssid, ETH_ALEN);
4575         else
4576                 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN);
4577
4578         ret = wpa_driver_nl80211_try_connect(drv, params);
4579         if (ret == -EALREADY) {
4580                 /*
4581                  * cfg80211 does not currently accept new connections if
4582                  * we are already connected. As a workaround, force
4583                  * disconnection and try again.
4584                  */
4585                 wpa_printf(MSG_DEBUG, "nl80211: Explicitly "
4586                            "disconnecting before reassociation "
4587                            "attempt");
4588                 if (wpa_driver_nl80211_disconnect(
4589                             drv, WLAN_REASON_PREV_AUTH_NOT_VALID))
4590                         return -1;
4591                 ret = wpa_driver_nl80211_try_connect(drv, params);
4592         }
4593         return ret;
4594 }
4595
4596
4597 static int wpa_driver_nl80211_associate(
4598         void *priv, struct wpa_driver_associate_params *params)
4599 {
4600         struct i802_bss *bss = priv;
4601         struct wpa_driver_nl80211_data *drv = bss->drv;
4602         int ret = -1;
4603         struct nl_msg *msg;
4604
4605         nl80211_unmask_11b_rates(bss);
4606
4607         if (params->mode == IEEE80211_MODE_AP)
4608                 return wpa_driver_nl80211_ap(drv, params);
4609
4610         if (params->mode == IEEE80211_MODE_IBSS)
4611                 return wpa_driver_nl80211_ibss(drv, params);
4612
4613         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4614                 enum nl80211_iftype nlmode = params->p2p ?
4615                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4616
4617                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4618                         return -1;
4619                 return wpa_driver_nl80211_connect(drv, params);
4620         }
4621
4622         nl80211_mark_disconnected(drv);
4623
4624         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4625                    drv->ifindex);
4626         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_ASSOCIATE);
4627         if (!msg)
4628                 return -1;
4629
4630         ret = nl80211_connect_common(drv, params, msg);
4631         if (ret)
4632                 goto fail;
4633
4634         if (params->prev_bssid) {
4635                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4636                            MAC2STR(params->prev_bssid));
4637                 if (nla_put(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4638                             params->prev_bssid))
4639                         goto fail;
4640         }
4641
4642         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4643         msg = NULL;
4644         if (ret) {
4645                 wpa_dbg(drv->ctx, MSG_DEBUG,
4646                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
4647                         ret, strerror(-ret));
4648                 nl80211_dump_scan(drv);
4649         } else {
4650                 wpa_printf(MSG_DEBUG,
4651                            "nl80211: Association request send successfully");
4652         }
4653
4654 fail:
4655         nlmsg_free(msg);
4656         return ret;
4657 }
4658
4659
4660 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4661                             int ifindex, enum nl80211_iftype mode)
4662 {
4663         struct nl_msg *msg;
4664         int ret = -ENOBUFS;
4665
4666         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
4667                    ifindex, mode, nl80211_iftype_str(mode));
4668
4669         msg = nl80211_cmd_msg(drv->first_bss, 0, NL80211_CMD_SET_INTERFACE);
4670         if (!msg || nla_put_u32(msg, NL80211_ATTR_IFTYPE, mode))
4671                 goto fail;
4672
4673         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4674         msg = NULL;
4675         if (!ret)
4676                 return 0;
4677 fail:
4678         nlmsg_free(msg);
4679         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4680                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4681         return ret;
4682 }
4683
4684
4685 static int wpa_driver_nl80211_set_mode_impl(
4686                 struct i802_bss *bss,
4687                 enum nl80211_iftype nlmode,
4688                 struct hostapd_freq_params *desired_freq_params)
4689 {
4690         struct wpa_driver_nl80211_data *drv = bss->drv;
4691         int ret = -1;
4692         int i;
4693         int was_ap = is_ap_interface(drv->nlmode);
4694         int res;
4695         int mode_switch_res;
4696
4697         mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4698         if (mode_switch_res && nlmode == nl80211_get_ifmode(bss))
4699                 mode_switch_res = 0;
4700
4701         if (mode_switch_res == 0) {
4702                 drv->nlmode = nlmode;
4703                 ret = 0;
4704                 goto done;
4705         }
4706
4707         if (mode_switch_res == -ENODEV)
4708                 return -1;
4709
4710         if (nlmode == drv->nlmode) {
4711                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4712                            "requested mode - ignore error");
4713                 ret = 0;
4714                 goto done; /* Already in the requested mode */
4715         }
4716
4717         /* mac80211 doesn't allow mode changes while the device is up, so
4718          * take the device down, try to set the mode again, and bring the
4719          * device back up.
4720          */
4721         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4722                    "interface down");
4723         for (i = 0; i < 10; i++) {
4724                 res = i802_set_iface_flags(bss, 0);
4725                 if (res == -EACCES || res == -ENODEV)
4726                         break;
4727                 if (res != 0) {
4728                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4729                                    "interface down");
4730                         os_sleep(0, 100000);
4731                         continue;
4732                 }
4733
4734                 /*
4735                  * Setting the mode will fail for some drivers if the phy is
4736                  * on a frequency that the mode is disallowed in.
4737                  */
4738                 if (desired_freq_params) {
4739                         res = nl80211_set_channel(bss, desired_freq_params, 0);
4740                         if (res) {
4741                                 wpa_printf(MSG_DEBUG,
4742                                            "nl80211: Failed to set frequency on interface");
4743                         }
4744                 }
4745
4746                 /* Try to set the mode again while the interface is down */
4747                 mode_switch_res = nl80211_set_mode(drv, drv->ifindex, nlmode);
4748                 if (mode_switch_res == -EBUSY) {
4749                         wpa_printf(MSG_DEBUG,
4750                                    "nl80211: Delaying mode set while interface going down");
4751                         os_sleep(0, 100000);
4752                         continue;
4753                 }
4754                 ret = mode_switch_res;
4755                 break;
4756         }
4757
4758         if (!ret) {
4759                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4760                            "interface is down");
4761                 drv->nlmode = nlmode;
4762                 drv->ignore_if_down_event = 1;
4763         }
4764
4765         /* Bring the interface back up */
4766         res = linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
4767         if (res != 0) {
4768                 wpa_printf(MSG_DEBUG,
4769                            "nl80211: Failed to set interface up after switching mode");
4770                 ret = -1;
4771         }
4772
4773 done:
4774         if (ret) {
4775                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4776                            "from %d failed", nlmode, drv->nlmode);
4777                 return ret;
4778         }
4779
4780         if (is_p2p_net_interface(nlmode)) {
4781                 wpa_printf(MSG_DEBUG,
4782                            "nl80211: Interface %s mode change to P2P - disable 11b rates",
4783                            bss->ifname);
4784                 nl80211_disable_11b_rates(drv, drv->ifindex, 1);
4785         } else if (drv->disabled_11b_rates) {
4786                 wpa_printf(MSG_DEBUG,
4787                            "nl80211: Interface %s mode changed to non-P2P - re-enable 11b rates",
4788                            bss->ifname);
4789                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
4790         }
4791
4792         if (is_ap_interface(nlmode)) {
4793                 nl80211_mgmt_unsubscribe(bss, "start AP");
4794                 /* Setup additional AP mode functionality if needed */
4795                 if (nl80211_setup_ap(bss))
4796                         return -1;
4797         } else if (was_ap) {
4798                 /* Remove additional AP mode functionality */
4799                 nl80211_teardown_ap(bss);
4800         } else {
4801                 nl80211_mgmt_unsubscribe(bss, "mode change");
4802         }
4803
4804         if (is_mesh_interface(nlmode) &&
4805             nl80211_mgmt_subscribe_mesh(bss))
4806                 return -1;
4807
4808         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
4809             !is_mesh_interface(nlmode) &&
4810             nl80211_mgmt_subscribe_non_ap(bss) < 0)
4811                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
4812                            "frame processing - ignore for now");
4813
4814         return 0;
4815 }
4816
4817
4818 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
4819                                 enum nl80211_iftype nlmode)
4820 {
4821         return wpa_driver_nl80211_set_mode_impl(bss, nlmode, NULL);
4822 }
4823
4824
4825 static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss,
4826                                             struct hostapd_freq_params *freq)
4827 {
4828         return wpa_driver_nl80211_set_mode_impl(bss, NL80211_IFTYPE_ADHOC,
4829                                                 freq);
4830 }
4831
4832
4833 static int wpa_driver_nl80211_get_capa(void *priv,
4834                                        struct wpa_driver_capa *capa)
4835 {
4836         struct i802_bss *bss = priv;
4837         struct wpa_driver_nl80211_data *drv = bss->drv;
4838
4839         if (!drv->has_capability)
4840                 return -1;
4841         os_memcpy(capa, &drv->capa, sizeof(*capa));
4842         if (drv->extended_capa && drv->extended_capa_mask) {
4843                 capa->extended_capa = drv->extended_capa;
4844                 capa->extended_capa_mask = drv->extended_capa_mask;
4845                 capa->extended_capa_len = drv->extended_capa_len;
4846         }
4847
4848         return 0;
4849 }
4850
4851
4852 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4853 {
4854         struct i802_bss *bss = priv;
4855         struct wpa_driver_nl80211_data *drv = bss->drv;
4856
4857         wpa_printf(MSG_DEBUG, "nl80211: Set %s operstate %d->%d (%s)",
4858                    bss->ifname, drv->operstate, state,
4859                    state ? "UP" : "DORMANT");
4860         drv->operstate = state;
4861         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
4862                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4863 }
4864
4865
4866 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4867 {
4868         struct i802_bss *bss = priv;
4869         struct wpa_driver_nl80211_data *drv = bss->drv;
4870         struct nl_msg *msg;
4871         struct nl80211_sta_flag_update upd;
4872         int ret;
4873
4874         if (!drv->associated && is_zero_ether_addr(drv->bssid) && !authorized) {
4875                 wpa_printf(MSG_DEBUG, "nl80211: Skip set_supp_port(unauthorized) while not associated");
4876                 return 0;
4877         }
4878
4879         wpa_printf(MSG_DEBUG, "nl80211: Set supplicant port %sauthorized for "
4880                    MACSTR, authorized ? "" : "un", MAC2STR(drv->bssid));
4881
4882         os_memset(&upd, 0, sizeof(upd));
4883         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4884         if (authorized)
4885                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4886
4887         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
4888             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid) ||
4889             nla_put(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd)) {
4890                 nlmsg_free(msg);
4891                 return -ENOBUFS;
4892         }
4893
4894         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4895         if (!ret)
4896                 return 0;
4897         wpa_printf(MSG_DEBUG, "nl80211: Failed to set STA flag: %d (%s)",
4898                    ret, strerror(-ret));
4899         return ret;
4900 }
4901
4902
4903 /* Set kernel driver on given frequency (MHz) */
4904 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4905 {
4906         struct i802_bss *bss = priv;
4907         return nl80211_set_channel(bss, freq, 0);
4908 }
4909
4910
4911 static inline int min_int(int a, int b)
4912 {
4913         if (a < b)
4914                 return a;
4915         return b;
4916 }
4917
4918
4919 static int get_key_handler(struct nl_msg *msg, void *arg)
4920 {
4921         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4922         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4923
4924         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4925                   genlmsg_attrlen(gnlh, 0), NULL);
4926
4927         /*
4928          * TODO: validate the key index and mac address!
4929          * Otherwise, there's a race condition as soon as
4930          * the kernel starts sending key notifications.
4931          */
4932
4933         if (tb[NL80211_ATTR_KEY_SEQ])
4934                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4935                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4936         return NL_SKIP;
4937 }
4938
4939
4940 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4941                            int idx, u8 *seq)
4942 {
4943         struct i802_bss *bss = priv;
4944         struct wpa_driver_nl80211_data *drv = bss->drv;
4945         struct nl_msg *msg;
4946
4947         msg = nl80211_ifindex_msg(drv, if_nametoindex(iface), 0,
4948                                   NL80211_CMD_GET_KEY);
4949         if (!msg ||
4950             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
4951             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, idx)) {
4952                 nlmsg_free(msg);
4953                 return -ENOBUFS;
4954         }
4955
4956         memset(seq, 0, 6);
4957
4958         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4959 }
4960
4961
4962 static int i802_set_rts(void *priv, int rts)
4963 {
4964         struct i802_bss *bss = priv;
4965         struct wpa_driver_nl80211_data *drv = bss->drv;
4966         struct nl_msg *msg;
4967         int ret;
4968         u32 val;
4969
4970         if (rts >= 2347)
4971                 val = (u32) -1;
4972         else
4973                 val = rts;
4974
4975         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
4976             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val)) {
4977                 nlmsg_free(msg);
4978                 return -ENOBUFS;
4979         }
4980
4981         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4982         if (!ret)
4983                 return 0;
4984         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4985                    "%d (%s)", rts, ret, strerror(-ret));
4986         return ret;
4987 }
4988
4989
4990 static int i802_set_frag(void *priv, int frag)
4991 {
4992         struct i802_bss *bss = priv;
4993         struct wpa_driver_nl80211_data *drv = bss->drv;
4994         struct nl_msg *msg;
4995         int ret;
4996         u32 val;
4997
4998         if (frag >= 2346)
4999                 val = (u32) -1;
5000         else
5001                 val = frag;
5002
5003         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WIPHY)) ||
5004             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val)) {
5005                 nlmsg_free(msg);
5006                 return -ENOBUFS;
5007         }
5008
5009         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5010         if (!ret)
5011                 return 0;
5012         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
5013                    "%d: %d (%s)", frag, ret, strerror(-ret));
5014         return ret;
5015 }
5016
5017
5018 static int i802_flush(void *priv)
5019 {
5020         struct i802_bss *bss = priv;
5021         struct nl_msg *msg;
5022         int res;
5023
5024         wpa_printf(MSG_DEBUG, "nl80211: flush -> DEL_STATION %s (all)",
5025                    bss->ifname);
5026
5027         /*
5028          * XXX: FIX! this needs to flush all VLANs too
5029          */
5030         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_DEL_STATION);
5031         res = send_and_recv_msgs(bss->drv, msg, NULL, NULL);
5032         if (res) {
5033                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
5034                            "(%s)", res, strerror(-res));
5035         }
5036         return res;
5037 }
5038
5039
5040 static int get_sta_handler(struct nl_msg *msg, void *arg)
5041 {
5042         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5043         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5044         struct hostap_sta_driver_data *data = arg;
5045         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
5046         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
5047                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
5048                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
5049                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
5050                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
5051                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
5052                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
5053         };
5054
5055         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5056                   genlmsg_attrlen(gnlh, 0), NULL);
5057
5058         /*
5059          * TODO: validate the interface and mac address!
5060          * Otherwise, there's a race condition as soon as
5061          * the kernel starts sending station notifications.
5062          */
5063
5064         if (!tb[NL80211_ATTR_STA_INFO]) {
5065                 wpa_printf(MSG_DEBUG, "sta stats missing!");
5066                 return NL_SKIP;
5067         }
5068         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
5069                              tb[NL80211_ATTR_STA_INFO],
5070                              stats_policy)) {
5071                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
5072                 return NL_SKIP;
5073         }
5074
5075         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
5076                 data->inactive_msec =
5077                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
5078         if (stats[NL80211_STA_INFO_RX_BYTES])
5079                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
5080         if (stats[NL80211_STA_INFO_TX_BYTES])
5081                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
5082         if (stats[NL80211_STA_INFO_RX_PACKETS])
5083                 data->rx_packets =
5084                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
5085         if (stats[NL80211_STA_INFO_TX_PACKETS])
5086                 data->tx_packets =
5087                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
5088         if (stats[NL80211_STA_INFO_TX_FAILED])
5089                 data->tx_retry_failed =
5090                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
5091
5092         return NL_SKIP;
5093 }
5094
5095 static int i802_read_sta_data(struct i802_bss *bss,
5096                               struct hostap_sta_driver_data *data,
5097                               const u8 *addr)
5098 {
5099         struct nl_msg *msg;
5100
5101         os_memset(data, 0, sizeof(*data));
5102
5103         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_GET_STATION)) ||
5104             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
5105                 nlmsg_free(msg);
5106                 return -ENOBUFS;
5107         }
5108
5109         return send_and_recv_msgs(bss->drv, msg, get_sta_handler, data);
5110 }
5111
5112
5113 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
5114                                     int cw_min, int cw_max, int burst_time)
5115 {
5116         struct i802_bss *bss = priv;
5117         struct wpa_driver_nl80211_data *drv = bss->drv;
5118         struct nl_msg *msg;
5119         struct nlattr *txq, *params;
5120
5121         msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_WIPHY);
5122         if (!msg)
5123                 return -1;
5124
5125         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
5126         if (!txq)
5127                 goto fail;
5128
5129         /* We are only sending parameters for a single TXQ at a time */
5130         params = nla_nest_start(msg, 1);
5131         if (!params)
5132                 goto fail;
5133
5134         switch (queue) {
5135         case 0:
5136                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO))
5137                         goto fail;
5138                 break;
5139         case 1:
5140                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI))
5141                         goto fail;
5142                 break;
5143         case 2:
5144                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE))
5145                         goto fail;
5146                 break;
5147         case 3:
5148                 if (nla_put_u8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK))
5149                         goto fail;
5150                 break;
5151         }
5152         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
5153          * 32 usec, so need to convert the value here. */
5154         if (nla_put_u16(msg, NL80211_TXQ_ATTR_TXOP,
5155                         (burst_time * 100 + 16) / 32) ||
5156             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min) ||
5157             nla_put_u16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max) ||
5158             nla_put_u8(msg, NL80211_TXQ_ATTR_AIFS, aifs))
5159                 goto fail;
5160
5161         nla_nest_end(msg, params);
5162
5163         nla_nest_end(msg, txq);
5164
5165         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5166                 return 0;
5167         msg = NULL;
5168 fail:
5169         nlmsg_free(msg);
5170         return -1;
5171 }
5172
5173
5174 static int i802_set_sta_vlan(struct i802_bss *bss, const u8 *addr,
5175                              const char *ifname, int vlan_id)
5176 {
5177         struct wpa_driver_nl80211_data *drv = bss->drv;
5178         struct nl_msg *msg;
5179         int ret;
5180
5181         wpa_printf(MSG_DEBUG, "nl80211: %s[%d]: set_sta_vlan(" MACSTR
5182                    ", ifname=%s[%d], vlan_id=%d)",
5183                    bss->ifname, if_nametoindex(bss->ifname),
5184                    MAC2STR(addr), ifname, if_nametoindex(ifname), vlan_id);
5185         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_STATION)) ||
5186             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
5187             nla_put_u32(msg, NL80211_ATTR_STA_VLAN, if_nametoindex(ifname))) {
5188                 nlmsg_free(msg);
5189                 return -ENOBUFS;
5190         }
5191
5192         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5193         if (ret < 0) {
5194                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
5195                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
5196                            MAC2STR(addr), ifname, vlan_id, ret,
5197                            strerror(-ret));
5198         }
5199         return ret;
5200 }
5201
5202
5203 static int i802_get_inact_sec(void *priv, const u8 *addr)
5204 {
5205         struct hostap_sta_driver_data data;
5206         int ret;
5207
5208         data.inactive_msec = (unsigned long) -1;
5209         ret = i802_read_sta_data(priv, &data, addr);
5210         if (ret || data.inactive_msec == (unsigned long) -1)
5211                 return -1;
5212         return data.inactive_msec / 1000;
5213 }
5214
5215
5216 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5217 {
5218 #if 0
5219         /* TODO */
5220 #endif
5221         return 0;
5222 }
5223
5224
5225 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5226                            int reason)
5227 {
5228         struct i802_bss *bss = priv;
5229         struct wpa_driver_nl80211_data *drv = bss->drv;
5230         struct ieee80211_mgmt mgmt;
5231
5232         if (is_mesh_interface(drv->nlmode))
5233                 return -1;
5234
5235         if (drv->device_ap_sme)
5236                 return wpa_driver_nl80211_sta_remove(bss, addr, 1, reason);
5237
5238         memset(&mgmt, 0, sizeof(mgmt));
5239         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5240                                           WLAN_FC_STYPE_DEAUTH);
5241         memcpy(mgmt.da, addr, ETH_ALEN);
5242         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5243         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5244         mgmt.u.deauth.reason_code = host_to_le16(reason);
5245         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5246                                             IEEE80211_HDRLEN +
5247                                             sizeof(mgmt.u.deauth), 0, 0, 0, 0,
5248                                             0);
5249 }
5250
5251
5252 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5253                              int reason)
5254 {
5255         struct i802_bss *bss = priv;
5256         struct wpa_driver_nl80211_data *drv = bss->drv;
5257         struct ieee80211_mgmt mgmt;
5258
5259         if (is_mesh_interface(drv->nlmode))
5260                 return -1;
5261
5262         if (drv->device_ap_sme)
5263                 return wpa_driver_nl80211_sta_remove(bss, addr, 0, reason);
5264
5265         memset(&mgmt, 0, sizeof(mgmt));
5266         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5267                                           WLAN_FC_STYPE_DISASSOC);
5268         memcpy(mgmt.da, addr, ETH_ALEN);
5269         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5270         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5271         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5272         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5273                                             IEEE80211_HDRLEN +
5274                                             sizeof(mgmt.u.disassoc), 0, 0, 0, 0,
5275                                             0);
5276 }
5277
5278
5279 static void dump_ifidx(struct wpa_driver_nl80211_data *drv)
5280 {
5281         char buf[200], *pos, *end;
5282         int i, res;
5283
5284         pos = buf;
5285         end = pos + sizeof(buf);
5286
5287         for (i = 0; i < drv->num_if_indices; i++) {
5288                 if (!drv->if_indices[i])
5289                         continue;
5290                 res = os_snprintf(pos, end - pos, " %d", drv->if_indices[i]);
5291                 if (os_snprintf_error(end - pos, res))
5292                         break;
5293                 pos += res;
5294         }
5295         *pos = '\0';
5296
5297         wpa_printf(MSG_DEBUG, "nl80211: if_indices[%d]:%s",
5298                    drv->num_if_indices, buf);
5299 }
5300
5301
5302 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5303 {
5304         int i;
5305         int *old;
5306
5307         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
5308                    ifidx);
5309         if (have_ifidx(drv, ifidx)) {
5310                 wpa_printf(MSG_DEBUG, "nl80211: ifindex %d already in the list",
5311                            ifidx);
5312                 return;
5313         }
5314         for (i = 0; i < drv->num_if_indices; i++) {
5315                 if (drv->if_indices[i] == 0) {
5316                         drv->if_indices[i] = ifidx;
5317                         dump_ifidx(drv);
5318                         return;
5319                 }
5320         }
5321
5322         if (drv->if_indices != drv->default_if_indices)
5323                 old = drv->if_indices;
5324         else
5325                 old = NULL;
5326
5327         drv->if_indices = os_realloc_array(old, drv->num_if_indices + 1,
5328                                            sizeof(int));
5329         if (!drv->if_indices) {
5330                 if (!old)
5331                         drv->if_indices = drv->default_if_indices;
5332                 else
5333                         drv->if_indices = old;
5334                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
5335                            "interfaces");
5336                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
5337                 return;
5338         } else if (!old)
5339                 os_memcpy(drv->if_indices, drv->default_if_indices,
5340                           sizeof(drv->default_if_indices));
5341         drv->if_indices[drv->num_if_indices] = ifidx;
5342         drv->num_if_indices++;
5343         dump_ifidx(drv);
5344 }
5345
5346
5347 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5348 {
5349         int i;
5350
5351         for (i = 0; i < drv->num_if_indices; i++) {
5352                 if (drv->if_indices[i] == ifidx) {
5353                         drv->if_indices[i] = 0;
5354                         break;
5355                 }
5356         }
5357         dump_ifidx(drv);
5358 }
5359
5360
5361 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
5362 {
5363         int i;
5364
5365         for (i = 0; i < drv->num_if_indices; i++)
5366                 if (drv->if_indices[i] == ifidx)
5367                         return 1;
5368
5369         return 0;
5370 }
5371
5372
5373 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
5374                             const char *bridge_ifname, char *ifname_wds)
5375 {
5376         struct i802_bss *bss = priv;
5377         struct wpa_driver_nl80211_data *drv = bss->drv;
5378         char name[IFNAMSIZ + 1];
5379
5380         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
5381         if (ifname_wds)
5382                 os_strlcpy(ifname_wds, name, IFNAMSIZ + 1);
5383
5384         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
5385                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
5386         if (val) {
5387                 if (!if_nametoindex(name)) {
5388                         if (nl80211_create_iface(drv, name,
5389                                                  NL80211_IFTYPE_AP_VLAN,
5390                                                  bss->addr, 1, NULL, NULL, 0) <
5391                             0)
5392                                 return -1;
5393                         if (bridge_ifname &&
5394                             linux_br_add_if(drv->global->ioctl_sock,
5395                                             bridge_ifname, name) < 0)
5396                                 return -1;
5397                 }
5398                 if (linux_set_iface_flags(drv->global->ioctl_sock, name, 1)) {
5399                         wpa_printf(MSG_ERROR, "nl80211: Failed to set WDS STA "
5400                                    "interface %s up", name);
5401                 }
5402                 return i802_set_sta_vlan(priv, addr, name, 0);
5403         } else {
5404                 if (bridge_ifname)
5405                         linux_br_del_if(drv->global->ioctl_sock, bridge_ifname,
5406                                         name);
5407
5408                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
5409                 nl80211_remove_iface(drv, if_nametoindex(name));
5410                 return 0;
5411         }
5412 }
5413
5414
5415 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5416 {
5417         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5418         struct sockaddr_ll lladdr;
5419         unsigned char buf[3000];
5420         int len;
5421         socklen_t fromlen = sizeof(lladdr);
5422
5423         len = recvfrom(sock, buf, sizeof(buf), 0,
5424                        (struct sockaddr *)&lladdr, &fromlen);
5425         if (len < 0) {
5426                 wpa_printf(MSG_ERROR, "nl80211: EAPOL recv failed: %s",
5427                            strerror(errno));
5428                 return;
5429         }
5430
5431         if (have_ifidx(drv, lladdr.sll_ifindex))
5432                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5433 }
5434
5435
5436 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5437                              struct i802_bss *bss,
5438                              const char *brname, const char *ifname)
5439 {
5440         int br_ifindex;
5441         char in_br[IFNAMSIZ];
5442
5443         os_strlcpy(bss->brname, brname, IFNAMSIZ);
5444         br_ifindex = if_nametoindex(brname);
5445         if (br_ifindex == 0) {
5446                 /*
5447                  * Bridge was configured, but the bridge device does
5448                  * not exist. Try to add it now.
5449                  */
5450                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
5451                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5452                                    "bridge interface %s: %s",
5453                                    brname, strerror(errno));
5454                         return -1;
5455                 }
5456                 bss->added_bridge = 1;
5457                 br_ifindex = if_nametoindex(brname);
5458                 add_ifidx(drv, br_ifindex);
5459         }
5460         bss->br_ifindex = br_ifindex;
5461
5462         if (linux_br_get(in_br, ifname) == 0) {
5463                 if (os_strcmp(in_br, brname) == 0)
5464                         return 0; /* already in the bridge */
5465
5466                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5467                            "bridge %s", ifname, in_br);
5468                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
5469                     0) {
5470                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5471                                    "remove interface %s from bridge "
5472                                    "%s: %s",
5473                                    ifname, brname, strerror(errno));
5474                         return -1;
5475                 }
5476         }
5477
5478         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5479                    ifname, brname);
5480         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
5481                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5482                            "into bridge %s: %s",
5483                            ifname, brname, strerror(errno));
5484                 return -1;
5485         }
5486         bss->added_if_into_bridge = 1;
5487
5488         return 0;
5489 }
5490
5491
5492 static void *i802_init(struct hostapd_data *hapd,
5493                        struct wpa_init_params *params)
5494 {
5495         struct wpa_driver_nl80211_data *drv;
5496         struct i802_bss *bss;
5497         size_t i;
5498         char brname[IFNAMSIZ];
5499         int ifindex, br_ifindex;
5500         int br_added = 0;
5501
5502         bss = wpa_driver_nl80211_drv_init(hapd, params->ifname,
5503                                           params->global_priv, 1,
5504                                           params->bssid, params->driver_params);
5505         if (bss == NULL)
5506                 return NULL;
5507
5508         drv = bss->drv;
5509
5510         if (linux_br_get(brname, params->ifname) == 0) {
5511                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5512                            params->ifname, brname);
5513                 br_ifindex = if_nametoindex(brname);
5514                 os_strlcpy(bss->brname, brname, IFNAMSIZ);
5515         } else {
5516                 brname[0] = '\0';
5517                 br_ifindex = 0;
5518         }
5519         bss->br_ifindex = br_ifindex;
5520
5521         for (i = 0; i < params->num_bridge; i++) {
5522                 if (params->bridge[i]) {
5523                         ifindex = if_nametoindex(params->bridge[i]);
5524                         if (ifindex)
5525                                 add_ifidx(drv, ifindex);
5526                         if (ifindex == br_ifindex)
5527                                 br_added = 1;
5528                 }
5529         }
5530
5531         /* start listening for EAPOL on the default AP interface */
5532         add_ifidx(drv, drv->ifindex);
5533
5534         if (params->num_bridge && params->bridge[0]) {
5535                 if (i802_check_bridge(drv, bss, params->bridge[0],
5536                                       params->ifname) < 0)
5537                         goto failed;
5538                 if (os_strcmp(params->bridge[0], brname) != 0)
5539                         br_added = 1;
5540         }
5541
5542         if (!br_added && br_ifindex &&
5543             (params->num_bridge == 0 || !params->bridge[0]))
5544                 add_ifidx(drv, br_ifindex);
5545
5546 #ifdef CONFIG_LIBNL3_ROUTE
5547         if (bss->added_if_into_bridge) {
5548                 drv->rtnl_sk = nl_socket_alloc();
5549                 if (drv->rtnl_sk == NULL) {
5550                         wpa_printf(MSG_ERROR, "nl80211: Failed to allocate nl_sock");
5551                         goto failed;
5552                 }
5553
5554                 if (nl_connect(drv->rtnl_sk, NETLINK_ROUTE)) {
5555                         wpa_printf(MSG_ERROR, "nl80211: Failed to connect nl_sock to NETLINK_ROUTE: %s",
5556                                    strerror(errno));
5557                         goto failed;
5558                 }
5559         }
5560 #endif /* CONFIG_LIBNL3_ROUTE */
5561
5562         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5563         if (drv->eapol_sock < 0) {
5564                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE) failed: %s",
5565                            strerror(errno));
5566                 goto failed;
5567         }
5568
5569         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5570         {
5571                 wpa_printf(MSG_INFO, "nl80211: Could not register read socket for eapol");
5572                 goto failed;
5573         }
5574
5575         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
5576                                params->own_addr))
5577                 goto failed;
5578         os_memcpy(drv->perm_addr, params->own_addr, ETH_ALEN);
5579
5580         memcpy(bss->addr, params->own_addr, ETH_ALEN);
5581
5582         return bss;
5583
5584 failed:
5585         wpa_driver_nl80211_deinit(bss);
5586         return NULL;
5587 }
5588
5589
5590 static void i802_deinit(void *priv)
5591 {
5592         struct i802_bss *bss = priv;
5593         wpa_driver_nl80211_deinit(bss);
5594 }
5595
5596
5597 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5598         enum wpa_driver_if_type type)
5599 {
5600         switch (type) {
5601         case WPA_IF_STATION:
5602                 return NL80211_IFTYPE_STATION;
5603         case WPA_IF_P2P_CLIENT:
5604         case WPA_IF_P2P_GROUP:
5605                 return NL80211_IFTYPE_P2P_CLIENT;
5606         case WPA_IF_AP_VLAN:
5607                 return NL80211_IFTYPE_AP_VLAN;
5608         case WPA_IF_AP_BSS:
5609                 return NL80211_IFTYPE_AP;
5610         case WPA_IF_P2P_GO:
5611                 return NL80211_IFTYPE_P2P_GO;
5612         case WPA_IF_P2P_DEVICE:
5613                 return NL80211_IFTYPE_P2P_DEVICE;
5614         case WPA_IF_MESH:
5615                 return NL80211_IFTYPE_MESH_POINT;
5616         }
5617         return -1;
5618 }
5619
5620
5621 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5622
5623 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
5624 {
5625         struct wpa_driver_nl80211_data *drv;
5626         dl_list_for_each(drv, &global->interfaces,
5627                          struct wpa_driver_nl80211_data, list) {
5628                 if (os_memcmp(addr, drv->first_bss->addr, ETH_ALEN) == 0)
5629                         return 1;
5630         }
5631         return 0;
5632 }
5633
5634
5635 static int nl80211_vif_addr(struct wpa_driver_nl80211_data *drv, u8 *new_addr)
5636 {
5637         unsigned int idx;
5638
5639         if (!drv->global)
5640                 return -1;
5641
5642         os_memcpy(new_addr, drv->first_bss->addr, ETH_ALEN);
5643         for (idx = 0; idx < 64; idx++) {
5644                 new_addr[0] = drv->first_bss->addr[0] | 0x02;
5645                 new_addr[0] ^= idx << 2;
5646                 if (!nl80211_addr_in_use(drv->global, new_addr))
5647                         break;
5648         }
5649         if (idx == 64)
5650                 return -1;
5651
5652         wpa_printf(MSG_DEBUG, "nl80211: Assigned new virtual interface address "
5653                    MACSTR, MAC2STR(new_addr));
5654
5655         return 0;
5656 }
5657
5658 #endif /* CONFIG_P2P || CONFIG_MESH */
5659
5660
5661 struct wdev_info {
5662         u64 wdev_id;
5663         int wdev_id_set;
5664         u8 macaddr[ETH_ALEN];
5665 };
5666
5667 static int nl80211_wdev_handler(struct nl_msg *msg, void *arg)
5668 {
5669         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5670         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5671         struct wdev_info *wi = arg;
5672
5673         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5674                   genlmsg_attrlen(gnlh, 0), NULL);
5675         if (tb[NL80211_ATTR_WDEV]) {
5676                 wi->wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]);
5677                 wi->wdev_id_set = 1;
5678         }
5679
5680         if (tb[NL80211_ATTR_MAC])
5681                 os_memcpy(wi->macaddr, nla_data(tb[NL80211_ATTR_MAC]),
5682                           ETH_ALEN);
5683
5684         return NL_SKIP;
5685 }
5686
5687
5688 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5689                                      const char *ifname, const u8 *addr,
5690                                      void *bss_ctx, void **drv_priv,
5691                                      char *force_ifname, u8 *if_addr,
5692                                      const char *bridge, int use_existing)
5693 {
5694         enum nl80211_iftype nlmode;
5695         struct i802_bss *bss = priv;
5696         struct wpa_driver_nl80211_data *drv = bss->drv;
5697         int ifidx;
5698         int added = 1;
5699
5700         if (addr)
5701                 os_memcpy(if_addr, addr, ETH_ALEN);
5702         nlmode = wpa_driver_nl80211_if_type(type);
5703         if (nlmode == NL80211_IFTYPE_P2P_DEVICE) {
5704                 struct wdev_info p2pdev_info;
5705
5706                 os_memset(&p2pdev_info, 0, sizeof(p2pdev_info));
5707                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5708                                              0, nl80211_wdev_handler,
5709                                              &p2pdev_info, use_existing);
5710                 if (!p2pdev_info.wdev_id_set || ifidx != 0) {
5711                         wpa_printf(MSG_ERROR, "nl80211: Failed to create a P2P Device interface %s",
5712                                    ifname);
5713                         return -1;
5714                 }
5715
5716                 drv->global->if_add_wdevid = p2pdev_info.wdev_id;
5717                 drv->global->if_add_wdevid_set = p2pdev_info.wdev_id_set;
5718                 if (!is_zero_ether_addr(p2pdev_info.macaddr))
5719                         os_memcpy(if_addr, p2pdev_info.macaddr, ETH_ALEN);
5720                 wpa_printf(MSG_DEBUG, "nl80211: New P2P Device interface %s (0x%llx) created",
5721                            ifname,
5722                            (long long unsigned int) p2pdev_info.wdev_id);
5723         } else {
5724                 ifidx = nl80211_create_iface(drv, ifname, nlmode, addr,
5725                                              0, NULL, NULL, use_existing);
5726                 if (use_existing && ifidx == -ENFILE) {
5727                         added = 0;
5728                         ifidx = if_nametoindex(ifname);
5729                 } else if (ifidx < 0) {
5730                         return -1;
5731                 }
5732         }
5733
5734         if (!addr) {
5735                 if (drv->nlmode == NL80211_IFTYPE_P2P_DEVICE)
5736                         os_memcpy(if_addr, bss->addr, ETH_ALEN);
5737                 else if (linux_get_ifhwaddr(drv->global->ioctl_sock,
5738                                             bss->ifname, if_addr) < 0) {
5739                         if (added)
5740                                 nl80211_remove_iface(drv, ifidx);
5741                         return -1;
5742                 }
5743         }
5744
5745 #if defined(CONFIG_P2P) || defined(CONFIG_MESH)
5746         if (!addr &&
5747             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
5748              type == WPA_IF_P2P_GO || type == WPA_IF_MESH)) {
5749                 /* Enforce unique P2P Interface Address */
5750                 u8 new_addr[ETH_ALEN];
5751
5752                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
5753                                        new_addr) < 0) {
5754                         if (added)
5755                                 nl80211_remove_iface(drv, ifidx);
5756                         return -1;
5757                 }
5758                 if (nl80211_addr_in_use(drv->global, new_addr)) {
5759                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
5760                                    "for %s interface", type == WPA_IF_MESH ?
5761                                    "mesh" : "P2P group");
5762                         if (nl80211_vif_addr(drv, new_addr) < 0) {
5763                                 if (added)
5764                                         nl80211_remove_iface(drv, ifidx);
5765                                 return -1;
5766                         }
5767                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
5768                                                new_addr) < 0) {
5769                                 if (added)
5770                                         nl80211_remove_iface(drv, ifidx);
5771                                 return -1;
5772                         }
5773                 }
5774                 os_memcpy(if_addr, new_addr, ETH_ALEN);
5775         }
5776 #endif /* CONFIG_P2P || CONFIG_MESH */
5777
5778         if (type == WPA_IF_AP_BSS) {
5779                 struct i802_bss *new_bss = os_zalloc(sizeof(*new_bss));
5780                 if (new_bss == NULL) {
5781                         if (added)
5782                                 nl80211_remove_iface(drv, ifidx);
5783                         return -1;
5784                 }
5785
5786                 if (bridge &&
5787                     i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
5788                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
5789                                    "interface %s to a bridge %s",
5790                                    ifname, bridge);
5791                         if (added)
5792                                 nl80211_remove_iface(drv, ifidx);
5793                         os_free(new_bss);
5794                         return -1;
5795                 }
5796
5797                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
5798                 {
5799                         if (added)
5800                                 nl80211_remove_iface(drv, ifidx);
5801                         os_free(new_bss);
5802                         return -1;
5803                 }
5804                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5805                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
5806                 new_bss->ifindex = ifidx;
5807                 new_bss->drv = drv;
5808                 new_bss->next = drv->first_bss->next;
5809                 new_bss->freq = drv->first_bss->freq;
5810                 new_bss->ctx = bss_ctx;
5811                 new_bss->added_if = added;
5812                 drv->first_bss->next = new_bss;
5813                 if (drv_priv)
5814                         *drv_priv = new_bss;
5815                 nl80211_init_bss(new_bss);
5816
5817                 /* Subscribe management frames for this WPA_IF_AP_BSS */
5818                 if (nl80211_setup_ap(new_bss))
5819                         return -1;
5820         }
5821
5822         if (drv->global)
5823                 drv->global->if_add_ifindex = ifidx;
5824
5825         /*
5826          * Some virtual interfaces need to process EAPOL packets and events on
5827          * the parent interface. This is used mainly with hostapd.
5828          */
5829         if (ifidx > 0 &&
5830             (drv->hostapd ||
5831              nlmode == NL80211_IFTYPE_AP_VLAN ||
5832              nlmode == NL80211_IFTYPE_WDS ||
5833              nlmode == NL80211_IFTYPE_MONITOR))
5834                 add_ifidx(drv, ifidx);
5835
5836         return 0;
5837 }
5838
5839
5840 static int wpa_driver_nl80211_if_remove(struct i802_bss *bss,
5841                                         enum wpa_driver_if_type type,
5842                                         const char *ifname)
5843 {
5844         struct wpa_driver_nl80211_data *drv = bss->drv;
5845         int ifindex = if_nametoindex(ifname);
5846
5847         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d added_if=%d",
5848                    __func__, type, ifname, ifindex, bss->added_if);
5849         if (ifindex > 0 && (bss->added_if || bss->ifindex != ifindex))
5850                 nl80211_remove_iface(drv, ifindex);
5851         else if (ifindex > 0 && !bss->added_if) {
5852                 struct wpa_driver_nl80211_data *drv2;
5853                 dl_list_for_each(drv2, &drv->global->interfaces,
5854                                  struct wpa_driver_nl80211_data, list)
5855                         del_ifidx(drv2, ifindex);
5856         }
5857
5858         if (type != WPA_IF_AP_BSS)
5859                 return 0;
5860
5861         if (bss->added_if_into_bridge) {
5862                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
5863                                     bss->ifname) < 0)
5864                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5865                                    "interface %s from bridge %s: %s",
5866                                    bss->ifname, bss->brname, strerror(errno));
5867         }
5868         if (bss->added_bridge) {
5869                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
5870                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
5871                                    "bridge %s: %s",
5872                                    bss->brname, strerror(errno));
5873         }
5874
5875         if (bss != drv->first_bss) {
5876                 struct i802_bss *tbss;
5877
5878                 wpa_printf(MSG_DEBUG, "nl80211: Not the first BSS - remove it");
5879                 for (tbss = drv->first_bss; tbss; tbss = tbss->next) {
5880                         if (tbss->next == bss) {
5881                                 tbss->next = bss->next;
5882                                 /* Unsubscribe management frames */
5883                                 nl80211_teardown_ap(bss);
5884                                 nl80211_destroy_bss(bss);
5885                                 if (!bss->added_if)
5886                                         i802_set_iface_flags(bss, 0);
5887                                 os_free(bss);
5888                                 bss = NULL;
5889                                 break;
5890                         }
5891                 }
5892                 if (bss)
5893                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
5894                                    "BSS %p in the list", __func__, bss);
5895         } else {
5896                 wpa_printf(MSG_DEBUG, "nl80211: First BSS - reassign context");
5897                 nl80211_teardown_ap(bss);
5898                 if (!bss->added_if && !drv->first_bss->next)
5899                         wpa_driver_nl80211_del_beacon(drv);
5900                 nl80211_destroy_bss(bss);
5901                 if (!bss->added_if)
5902                         i802_set_iface_flags(bss, 0);
5903                 if (drv->first_bss->next) {
5904                         drv->first_bss = drv->first_bss->next;
5905                         drv->ctx = drv->first_bss->ctx;
5906                         os_free(bss);
5907                 } else {
5908                         wpa_printf(MSG_DEBUG, "nl80211: No second BSS to reassign context to");
5909                 }
5910         }
5911
5912         return 0;
5913 }
5914
5915
5916 static int cookie_handler(struct nl_msg *msg, void *arg)
5917 {
5918         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5919         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5920         u64 *cookie = arg;
5921         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5922                   genlmsg_attrlen(gnlh, 0), NULL);
5923         if (tb[NL80211_ATTR_COOKIE])
5924                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5925         return NL_SKIP;
5926 }
5927
5928
5929 static int nl80211_send_frame_cmd(struct i802_bss *bss,
5930                                   unsigned int freq, unsigned int wait,
5931                                   const u8 *buf, size_t buf_len,
5932                                   u64 *cookie_out, int no_cck, int no_ack,
5933                                   int offchanok)
5934 {
5935         struct wpa_driver_nl80211_data *drv = bss->drv;
5936         struct nl_msg *msg;
5937         u64 cookie;
5938         int ret = -1;
5939
5940         wpa_printf(MSG_MSGDUMP, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
5941                    "no_ack=%d offchanok=%d",
5942                    freq, wait, no_cck, no_ack, offchanok);
5943         wpa_hexdump(MSG_MSGDUMP, "CMD_FRAME", buf, buf_len);
5944
5945         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME)) ||
5946             (freq && nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
5947             (wait && nla_put_u32(msg, NL80211_ATTR_DURATION, wait)) ||
5948             (offchanok && ((drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
5949                            drv->test_use_roc_tx) &&
5950              nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) ||
5951             (no_cck && nla_put_flag(msg, NL80211_ATTR_TX_NO_CCK_RATE)) ||
5952             (no_ack && nla_put_flag(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK)) ||
5953             nla_put(msg, NL80211_ATTR_FRAME, buf_len, buf))
5954                 goto fail;
5955
5956         cookie = 0;
5957         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5958         msg = NULL;
5959         if (ret) {
5960                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5961                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
5962                            freq, wait);
5963         } else {
5964                 wpa_printf(MSG_MSGDUMP, "nl80211: Frame TX command accepted%s; "
5965                            "cookie 0x%llx", no_ack ? " (no ACK)" : "",
5966                            (long long unsigned int) cookie);
5967
5968                 if (cookie_out)
5969                         *cookie_out = no_ack ? (u64) -1 : cookie;
5970         }
5971
5972 fail:
5973         nlmsg_free(msg);
5974         return ret;
5975 }
5976
5977
5978 static int wpa_driver_nl80211_send_action(struct i802_bss *bss,
5979                                           unsigned int freq,
5980                                           unsigned int wait_time,
5981                                           const u8 *dst, const u8 *src,
5982                                           const u8 *bssid,
5983                                           const u8 *data, size_t data_len,
5984                                           int no_cck)
5985 {
5986         struct wpa_driver_nl80211_data *drv = bss->drv;
5987         int ret = -1;
5988         u8 *buf;
5989         struct ieee80211_hdr *hdr;
5990
5991         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
5992                    "freq=%u MHz wait=%d ms no_cck=%d)",
5993                    drv->ifindex, freq, wait_time, no_cck);
5994
5995         buf = os_zalloc(24 + data_len);
5996         if (buf == NULL)
5997                 return ret;
5998         os_memcpy(buf + 24, data, data_len);
5999         hdr = (struct ieee80211_hdr *) buf;
6000         hdr->frame_control =
6001                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
6002         os_memcpy(hdr->addr1, dst, ETH_ALEN);
6003         os_memcpy(hdr->addr2, src, ETH_ALEN);
6004         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
6005
6006         if (is_ap_interface(drv->nlmode) &&
6007             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
6008              (int) freq == bss->freq || drv->device_ap_sme ||
6009              !drv->use_monitor))
6010                 ret = wpa_driver_nl80211_send_mlme(bss, buf, 24 + data_len,
6011                                                    0, freq, no_cck, 1,
6012                                                    wait_time);
6013         else
6014                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
6015                                              24 + data_len,
6016                                              &drv->send_action_cookie,
6017                                              no_cck, 0, 1);
6018
6019         os_free(buf);
6020         return ret;
6021 }
6022
6023
6024 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
6025 {
6026         struct i802_bss *bss = priv;
6027         struct wpa_driver_nl80211_data *drv = bss->drv;
6028         struct nl_msg *msg;
6029         int ret;
6030
6031         wpa_printf(MSG_DEBUG, "nl80211: Cancel TX frame wait: cookie=0x%llx",
6032                    (long long unsigned int) drv->send_action_cookie);
6033         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_FRAME_WAIT_CANCEL)) ||
6034             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie)) {
6035                 nlmsg_free(msg);
6036                 return;
6037         }
6038
6039         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6040         if (ret)
6041                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
6042                            "(%s)", ret, strerror(-ret));
6043 }
6044
6045
6046 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
6047                                                 unsigned int duration)
6048 {
6049         struct i802_bss *bss = priv;
6050         struct wpa_driver_nl80211_data *drv = bss->drv;
6051         struct nl_msg *msg;
6052         int ret;
6053         u64 cookie;
6054
6055         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_REMAIN_ON_CHANNEL)) ||
6056             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
6057             nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) {
6058                 nlmsg_free(msg);
6059                 return -1;
6060         }
6061
6062         cookie = 0;
6063         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
6064         if (ret == 0) {
6065                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
6066                            "0x%llx for freq=%u MHz duration=%u",
6067                            (long long unsigned int) cookie, freq, duration);
6068                 drv->remain_on_chan_cookie = cookie;
6069                 drv->pending_remain_on_chan = 1;
6070                 return 0;
6071         }
6072         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
6073                    "(freq=%d duration=%u): %d (%s)",
6074                    freq, duration, ret, strerror(-ret));
6075         return -1;
6076 }
6077
6078
6079 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
6080 {
6081         struct i802_bss *bss = priv;
6082         struct wpa_driver_nl80211_data *drv = bss->drv;
6083         struct nl_msg *msg;
6084         int ret;
6085
6086         if (!drv->pending_remain_on_chan) {
6087                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
6088                            "to cancel");
6089                 return -1;
6090         }
6091
6092         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
6093                    "0x%llx",
6094                    (long long unsigned int) drv->remain_on_chan_cookie);
6095
6096         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
6097         if (!msg ||
6098             nla_put_u64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie)) {
6099                 nlmsg_free(msg);
6100                 return -1;
6101         }
6102
6103         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6104         if (ret == 0)
6105                 return 0;
6106         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
6107                    "%d (%s)", ret, strerror(-ret));
6108         return -1;
6109 }
6110
6111
6112 static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, int report)
6113 {
6114         struct wpa_driver_nl80211_data *drv = bss->drv;
6115
6116         if (!report) {
6117                 if (bss->nl_preq && drv->device_ap_sme &&
6118                     is_ap_interface(drv->nlmode) && !bss->in_deinit &&
6119                     !bss->static_ap) {
6120                         /*
6121                          * Do not disable Probe Request reporting that was
6122                          * enabled in nl80211_setup_ap().
6123                          */
6124                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
6125                                    "Probe Request reporting nl_preq=%p while "
6126                                    "in AP mode", bss->nl_preq);
6127                 } else if (bss->nl_preq) {
6128                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
6129                                    "reporting nl_preq=%p", bss->nl_preq);
6130                         nl80211_destroy_eloop_handle(&bss->nl_preq);
6131                 }
6132                 return 0;
6133         }
6134
6135         if (bss->nl_preq) {
6136                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
6137                            "already on! nl_preq=%p", bss->nl_preq);
6138                 return 0;
6139         }
6140
6141         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
6142         if (bss->nl_preq == NULL)
6143                 return -1;
6144         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
6145                    "reporting nl_preq=%p", bss->nl_preq);
6146
6147         if (nl80211_register_frame(bss, bss->nl_preq,
6148                                    (WLAN_FC_TYPE_MGMT << 2) |
6149                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
6150                                    NULL, 0) < 0)
6151                 goto out_err;
6152
6153         nl80211_register_eloop_read(&bss->nl_preq,
6154                                     wpa_driver_nl80211_event_receive,
6155                                     bss->nl_cb);
6156
6157         return 0;
6158
6159  out_err:
6160         nl_destroy_handles(&bss->nl_preq);
6161         return -1;
6162 }
6163
6164
6165 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
6166                                      int ifindex, int disabled)
6167 {
6168         struct nl_msg *msg;
6169         struct nlattr *bands, *band;
6170         int ret;
6171
6172         wpa_printf(MSG_DEBUG,
6173                    "nl80211: NL80211_CMD_SET_TX_BITRATE_MASK (ifindex=%d %s)",
6174                    ifindex, disabled ? "NL80211_TXRATE_LEGACY=OFDM-only" :
6175                    "no NL80211_TXRATE_LEGACY constraint");
6176
6177         msg = nl80211_ifindex_msg(drv, ifindex, 0,
6178                                   NL80211_CMD_SET_TX_BITRATE_MASK);
6179         if (!msg)
6180                 return -1;
6181
6182         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
6183         if (!bands)
6184                 goto fail;
6185
6186         /*
6187          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
6188          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
6189          * rates. All 5 GHz rates are left enabled.
6190          */
6191         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
6192         if (!band ||
6193             (disabled && nla_put(msg, NL80211_TXRATE_LEGACY, 8,
6194                                  "\x0c\x12\x18\x24\x30\x48\x60\x6c")))
6195                 goto fail;
6196         nla_nest_end(msg, band);
6197
6198         nla_nest_end(msg, bands);
6199
6200         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6201         if (ret) {
6202                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
6203                            "(%s)", ret, strerror(-ret));
6204         } else
6205                 drv->disabled_11b_rates = disabled;
6206
6207         return ret;
6208
6209 fail:
6210         nlmsg_free(msg);
6211         return -1;
6212 }
6213
6214
6215 static int wpa_driver_nl80211_deinit_ap(void *priv)
6216 {
6217         struct i802_bss *bss = priv;
6218         struct wpa_driver_nl80211_data *drv = bss->drv;
6219         if (!is_ap_interface(drv->nlmode))
6220                 return -1;
6221         wpa_driver_nl80211_del_beacon(drv);
6222         bss->beacon_set = 0;
6223
6224         /*
6225          * If the P2P GO interface was dynamically added, then it is
6226          * possible that the interface change to station is not possible.
6227          */
6228         if (drv->nlmode == NL80211_IFTYPE_P2P_GO && bss->if_dynamic)
6229                 return 0;
6230
6231         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6232 }
6233
6234
6235 static int wpa_driver_nl80211_stop_ap(void *priv)
6236 {
6237         struct i802_bss *bss = priv;
6238         struct wpa_driver_nl80211_data *drv = bss->drv;
6239         if (!is_ap_interface(drv->nlmode))
6240                 return -1;
6241         wpa_driver_nl80211_del_beacon(drv);
6242         bss->beacon_set = 0;
6243         return 0;
6244 }
6245
6246
6247 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
6248 {
6249         struct i802_bss *bss = priv;
6250         struct wpa_driver_nl80211_data *drv = bss->drv;
6251         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
6252                 return -1;
6253
6254         /*
6255          * If the P2P Client interface was dynamically added, then it is
6256          * possible that the interface change to station is not possible.
6257          */
6258         if (bss->if_dynamic)
6259                 return 0;
6260
6261         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
6262 }
6263
6264
6265 static void wpa_driver_nl80211_resume(void *priv)
6266 {
6267         struct i802_bss *bss = priv;
6268
6269         if (i802_set_iface_flags(bss, 1))
6270                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on resume event");
6271 }
6272
6273
6274 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
6275 {
6276         struct i802_bss *bss = priv;
6277         struct wpa_driver_nl80211_data *drv = bss->drv;
6278         struct nl_msg *msg;
6279         struct nlattr *cqm;
6280
6281         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
6282                    "hysteresis=%d", threshold, hysteresis);
6283
6284         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_CQM)) ||
6285             !(cqm = nla_nest_start(msg, NL80211_ATTR_CQM)) ||
6286             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THOLD, threshold) ||
6287             nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_HYST, hysteresis)) {
6288                 nlmsg_free(msg);
6289                 return -1;
6290         }
6291         nla_nest_end(msg, cqm);
6292
6293         return send_and_recv_msgs(drv, msg, NULL, NULL);
6294 }
6295
6296
6297 static int get_channel_width(struct nl_msg *msg, void *arg)
6298 {
6299         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6300         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6301         struct wpa_signal_info *sig_change = arg;
6302
6303         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6304                   genlmsg_attrlen(gnlh, 0), NULL);
6305
6306         sig_change->center_frq1 = -1;
6307         sig_change->center_frq2 = -1;
6308         sig_change->chanwidth = CHAN_WIDTH_UNKNOWN;
6309
6310         if (tb[NL80211_ATTR_CHANNEL_WIDTH]) {
6311                 sig_change->chanwidth = convert2width(
6312                         nla_get_u32(tb[NL80211_ATTR_CHANNEL_WIDTH]));
6313                 if (tb[NL80211_ATTR_CENTER_FREQ1])
6314                         sig_change->center_frq1 =
6315                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]);
6316                 if (tb[NL80211_ATTR_CENTER_FREQ2])
6317                         sig_change->center_frq2 =
6318                                 nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]);
6319         }
6320
6321         return NL_SKIP;
6322 }
6323
6324
6325 static int nl80211_get_channel_width(struct wpa_driver_nl80211_data *drv,
6326                                      struct wpa_signal_info *sig)
6327 {
6328         struct nl_msg *msg;
6329
6330         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_GET_INTERFACE);
6331         return send_and_recv_msgs(drv, msg, get_channel_width, sig);
6332 }
6333
6334
6335 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
6336 {
6337         struct i802_bss *bss = priv;
6338         struct wpa_driver_nl80211_data *drv = bss->drv;
6339         int res;
6340
6341         os_memset(si, 0, sizeof(*si));
6342         res = nl80211_get_link_signal(drv, si);
6343         if (res != 0)
6344                 return res;
6345
6346         res = nl80211_get_channel_width(drv, si);
6347         if (res != 0)
6348                 return res;
6349
6350         return nl80211_get_link_noise(drv, si);
6351 }
6352
6353
6354 static int wpa_driver_nl80211_shared_freq(void *priv)
6355 {
6356         struct i802_bss *bss = priv;
6357         struct wpa_driver_nl80211_data *drv = bss->drv;
6358         struct wpa_driver_nl80211_data *driver;
6359         int freq = 0;
6360
6361         /*
6362          * If the same PHY is in connected state with some other interface,
6363          * then retrieve the assoc freq.
6364          */
6365         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
6366                    drv->phyname);
6367
6368         dl_list_for_each(driver, &drv->global->interfaces,
6369                          struct wpa_driver_nl80211_data, list) {
6370                 if (drv == driver ||
6371                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
6372                     !driver->associated)
6373                         continue;
6374
6375                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
6376                            MACSTR,
6377                            driver->phyname, driver->first_bss->ifname,
6378                            MAC2STR(driver->first_bss->addr));
6379                 if (is_ap_interface(driver->nlmode))
6380                         freq = driver->first_bss->freq;
6381                 else
6382                         freq = nl80211_get_assoc_freq(driver);
6383                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
6384                            drv->phyname, freq);
6385         }
6386
6387         if (!freq)
6388                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
6389                            "PHY (%s) in associated state", drv->phyname);
6390
6391         return freq;
6392 }
6393
6394
6395 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
6396                               int encrypt)
6397 {
6398         struct i802_bss *bss = priv;
6399         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
6400                                              0, 0, 0, 0);
6401 }
6402
6403
6404 static int nl80211_set_param(void *priv, const char *param)
6405 {
6406         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
6407         if (param == NULL)
6408                 return 0;
6409
6410 #ifdef CONFIG_P2P
6411         if (os_strstr(param, "use_p2p_group_interface=1")) {
6412                 struct i802_bss *bss = priv;
6413                 struct wpa_driver_nl80211_data *drv = bss->drv;
6414
6415                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
6416                            "interface");
6417                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
6418                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
6419         }
6420 #endif /* CONFIG_P2P */
6421
6422         if (os_strstr(param, "use_monitor=1")) {
6423                 struct i802_bss *bss = priv;
6424                 struct wpa_driver_nl80211_data *drv = bss->drv;
6425                 drv->use_monitor = 1;
6426         }
6427
6428         if (os_strstr(param, "force_connect_cmd=1")) {
6429                 struct i802_bss *bss = priv;
6430                 struct wpa_driver_nl80211_data *drv = bss->drv;
6431                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_SME;
6432                 drv->force_connect_cmd = 1;
6433         }
6434
6435         if (os_strstr(param, "no_offchannel_tx=1")) {
6436                 struct i802_bss *bss = priv;
6437                 struct wpa_driver_nl80211_data *drv = bss->drv;
6438                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
6439                 drv->test_use_roc_tx = 1;
6440         }
6441
6442         return 0;
6443 }
6444
6445
6446 static void * nl80211_global_init(void)
6447 {
6448         struct nl80211_global *global;
6449         struct netlink_config *cfg;
6450
6451         global = os_zalloc(sizeof(*global));
6452         if (global == NULL)
6453                 return NULL;
6454         global->ioctl_sock = -1;
6455         dl_list_init(&global->interfaces);
6456         global->if_add_ifindex = -1;
6457
6458         cfg = os_zalloc(sizeof(*cfg));
6459         if (cfg == NULL)
6460                 goto err;
6461
6462         cfg->ctx = global;
6463         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
6464         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
6465         global->netlink = netlink_init(cfg);
6466         if (global->netlink == NULL) {
6467                 os_free(cfg);
6468                 goto err;
6469         }
6470
6471         if (wpa_driver_nl80211_init_nl_global(global) < 0)
6472                 goto err;
6473
6474         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
6475         if (global->ioctl_sock < 0) {
6476                 wpa_printf(MSG_ERROR, "nl80211: socket(PF_INET,SOCK_DGRAM) failed: %s",
6477                            strerror(errno));
6478                 goto err;
6479         }
6480
6481         return global;
6482
6483 err:
6484         nl80211_global_deinit(global);
6485         return NULL;
6486 }
6487
6488
6489 static void nl80211_global_deinit(void *priv)
6490 {
6491         struct nl80211_global *global = priv;
6492         if (global == NULL)
6493                 return;
6494         if (!dl_list_empty(&global->interfaces)) {
6495                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
6496                            "nl80211_global_deinit",
6497                            dl_list_len(&global->interfaces));
6498         }
6499
6500         if (global->netlink)
6501                 netlink_deinit(global->netlink);
6502
6503         nl_destroy_handles(&global->nl);
6504
6505         if (global->nl_event)
6506                 nl80211_destroy_eloop_handle(&global->nl_event);
6507
6508         nl_cb_put(global->nl_cb);
6509
6510         if (global->ioctl_sock >= 0)
6511                 close(global->ioctl_sock);
6512
6513         os_free(global);
6514 }
6515
6516
6517 static const char * nl80211_get_radio_name(void *priv)
6518 {
6519         struct i802_bss *bss = priv;
6520         struct wpa_driver_nl80211_data *drv = bss->drv;
6521         return drv->phyname;
6522 }
6523
6524
6525 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
6526                          const u8 *pmkid)
6527 {
6528         struct nl_msg *msg;
6529
6530         if (!(msg = nl80211_bss_msg(bss, 0, cmd)) ||
6531             (pmkid && nla_put(msg, NL80211_ATTR_PMKID, 16, pmkid)) ||
6532             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))) {
6533                 nlmsg_free(msg);
6534                 return -ENOBUFS;
6535         }
6536
6537         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6538 }
6539
6540
6541 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6542 {
6543         struct i802_bss *bss = priv;
6544         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
6545         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
6546 }
6547
6548
6549 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
6550 {
6551         struct i802_bss *bss = priv;
6552         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
6553                    MAC2STR(bssid));
6554         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
6555 }
6556
6557
6558 static int nl80211_flush_pmkid(void *priv)
6559 {
6560         struct i802_bss *bss = priv;
6561         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
6562         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
6563 }
6564
6565
6566 static void clean_survey_results(struct survey_results *survey_results)
6567 {
6568         struct freq_survey *survey, *tmp;
6569
6570         if (dl_list_empty(&survey_results->survey_list))
6571                 return;
6572
6573         dl_list_for_each_safe(survey, tmp, &survey_results->survey_list,
6574                               struct freq_survey, list) {
6575                 dl_list_del(&survey->list);
6576                 os_free(survey);
6577         }
6578 }
6579
6580
6581 static void add_survey(struct nlattr **sinfo, u32 ifidx,
6582                        struct dl_list *survey_list)
6583 {
6584         struct freq_survey *survey;
6585
6586         survey = os_zalloc(sizeof(struct freq_survey));
6587         if  (!survey)
6588                 return;
6589
6590         survey->ifidx = ifidx;
6591         survey->freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6592         survey->filled = 0;
6593
6594         if (sinfo[NL80211_SURVEY_INFO_NOISE]) {
6595                 survey->nf = (int8_t)
6596                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
6597                 survey->filled |= SURVEY_HAS_NF;
6598         }
6599
6600         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]) {
6601                 survey->channel_time =
6602                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME]);
6603                 survey->filled |= SURVEY_HAS_CHAN_TIME;
6604         }
6605
6606         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]) {
6607                 survey->channel_time_busy =
6608                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY]);
6609                 survey->filled |= SURVEY_HAS_CHAN_TIME_BUSY;
6610         }
6611
6612         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]) {
6613                 survey->channel_time_rx =
6614                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_RX]);
6615                 survey->filled |= SURVEY_HAS_CHAN_TIME_RX;
6616         }
6617
6618         if (sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]) {
6619                 survey->channel_time_tx =
6620                         nla_get_u64(sinfo[NL80211_SURVEY_INFO_CHANNEL_TIME_TX]);
6621                 survey->filled |= SURVEY_HAS_CHAN_TIME_TX;
6622         }
6623
6624         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)",
6625                    survey->freq,
6626                    survey->nf,
6627                    (unsigned long int) survey->channel_time,
6628                    (unsigned long int) survey->channel_time_busy,
6629                    (unsigned long int) survey->channel_time_tx,
6630                    (unsigned long int) survey->channel_time_rx,
6631                    survey->filled);
6632
6633         dl_list_add_tail(survey_list, &survey->list);
6634 }
6635
6636
6637 static int check_survey_ok(struct nlattr **sinfo, u32 surveyed_freq,
6638                            unsigned int freq_filter)
6639 {
6640         if (!freq_filter)
6641                 return 1;
6642
6643         return freq_filter == surveyed_freq;
6644 }
6645
6646
6647 static int survey_handler(struct nl_msg *msg, void *arg)
6648 {
6649         struct nlattr *tb[NL80211_ATTR_MAX + 1];
6650         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
6651         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
6652         struct survey_results *survey_results;
6653         u32 surveyed_freq = 0;
6654         u32 ifidx;
6655
6656         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
6657                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
6658                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
6659         };
6660
6661         survey_results = (struct survey_results *) arg;
6662
6663         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
6664                   genlmsg_attrlen(gnlh, 0), NULL);
6665
6666         if (!tb[NL80211_ATTR_IFINDEX])
6667                 return NL_SKIP;
6668
6669         ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
6670
6671         if (!tb[NL80211_ATTR_SURVEY_INFO])
6672                 return NL_SKIP;
6673
6674         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
6675                              tb[NL80211_ATTR_SURVEY_INFO],
6676                              survey_policy))
6677                 return NL_SKIP;
6678
6679         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) {
6680                 wpa_printf(MSG_ERROR, "nl80211: Invalid survey data");
6681                 return NL_SKIP;
6682         }
6683
6684         surveyed_freq = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]);
6685
6686         if (!check_survey_ok(sinfo, surveyed_freq,
6687                              survey_results->freq_filter))
6688                 return NL_SKIP;
6689
6690         if (survey_results->freq_filter &&
6691             survey_results->freq_filter != surveyed_freq) {
6692                 wpa_printf(MSG_EXCESSIVE, "nl80211: Ignoring survey data for freq %d MHz",
6693                            surveyed_freq);
6694                 return NL_SKIP;
6695         }
6696
6697         add_survey(sinfo, ifidx, &survey_results->survey_list);
6698
6699         return NL_SKIP;
6700 }
6701
6702
6703 static int wpa_driver_nl80211_get_survey(void *priv, unsigned int freq)
6704 {
6705         struct i802_bss *bss = priv;
6706         struct wpa_driver_nl80211_data *drv = bss->drv;
6707         struct nl_msg *msg;
6708         int err;
6709         union wpa_event_data data;
6710         struct survey_results *survey_results;
6711
6712         os_memset(&data, 0, sizeof(data));
6713         survey_results = &data.survey_results;
6714
6715         dl_list_init(&survey_results->survey_list);
6716
6717         msg = nl80211_drv_msg(drv, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
6718         if (!msg)
6719                 return -ENOBUFS;
6720
6721         if (freq)
6722                 data.survey_results.freq_filter = freq;
6723
6724         do {
6725                 wpa_printf(MSG_DEBUG, "nl80211: Fetch survey data");
6726                 err = send_and_recv_msgs(drv, msg, survey_handler,
6727                                          survey_results);
6728         } while (err > 0);
6729
6730         if (err)
6731                 wpa_printf(MSG_ERROR, "nl80211: Failed to process survey data");
6732         else
6733                 wpa_supplicant_event(drv->ctx, EVENT_SURVEY, &data);
6734
6735         clean_survey_results(survey_results);
6736         return err;
6737 }
6738
6739
6740 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
6741                                    const u8 *replay_ctr)
6742 {
6743         struct i802_bss *bss = priv;
6744         struct wpa_driver_nl80211_data *drv = bss->drv;
6745         struct nlattr *replay_nested;
6746         struct nl_msg *msg;
6747         int ret;
6748
6749         if (!drv->set_rekey_offload)
6750                 return;
6751
6752         wpa_printf(MSG_DEBUG, "nl80211: Set rekey offload");
6753         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_REKEY_OFFLOAD)) ||
6754             !(replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA)) ||
6755             nla_put(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek) ||
6756             nla_put(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck) ||
6757             nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
6758                     replay_ctr)) {
6759                 nl80211_nlmsg_clear(msg);
6760                 nlmsg_free(msg);
6761                 return;
6762         }
6763
6764         nla_nest_end(msg, replay_nested);
6765
6766         ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
6767         if (ret == -EOPNOTSUPP) {
6768                 wpa_printf(MSG_DEBUG,
6769                            "nl80211: Driver does not support rekey offload");
6770                 drv->set_rekey_offload = 0;
6771         }
6772 }
6773
6774
6775 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
6776                                     const u8 *addr, int qos)
6777 {
6778         /* send data frame to poll STA and check whether
6779          * this frame is ACKed */
6780         struct {
6781                 struct ieee80211_hdr hdr;
6782                 u16 qos_ctl;
6783         } STRUCT_PACKED nulldata;
6784         size_t size;
6785
6786         /* Send data frame to poll STA and check whether this frame is ACKed */
6787
6788         os_memset(&nulldata, 0, sizeof(nulldata));
6789
6790         if (qos) {
6791                 nulldata.hdr.frame_control =
6792                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6793                                      WLAN_FC_STYPE_QOS_NULL);
6794                 size = sizeof(nulldata);
6795         } else {
6796                 nulldata.hdr.frame_control =
6797                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
6798                                      WLAN_FC_STYPE_NULLFUNC);
6799                 size = sizeof(struct ieee80211_hdr);
6800         }
6801
6802         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
6803         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6804         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6805         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6806
6807         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0, 0, 0,
6808                                          0, 0) < 0)
6809                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
6810                            "send poll frame");
6811 }
6812
6813 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
6814                                 int qos)
6815 {
6816         struct i802_bss *bss = priv;
6817         struct wpa_driver_nl80211_data *drv = bss->drv;
6818         struct nl_msg *msg;
6819
6820         if (!drv->poll_command_supported) {
6821                 nl80211_send_null_frame(bss, own_addr, addr, qos);
6822                 return;
6823         }
6824
6825         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_PROBE_CLIENT)) ||
6826             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
6827                 nlmsg_free(msg);
6828                 return;
6829         }
6830
6831         send_and_recv_msgs(drv, msg, NULL, NULL);
6832 }
6833
6834
6835 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
6836 {
6837         struct nl_msg *msg;
6838
6839         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_POWER_SAVE)) ||
6840             nla_put_u32(msg, NL80211_ATTR_PS_STATE,
6841                         enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED)) {
6842                 nlmsg_free(msg);
6843                 return -ENOBUFS;
6844         }
6845         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
6846 }
6847
6848
6849 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
6850                                      int ctwindow)
6851 {
6852         struct i802_bss *bss = priv;
6853
6854         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
6855                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
6856
6857         if (opp_ps != -1 || ctwindow != -1) {
6858 #ifdef ANDROID_P2P
6859                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
6860 #else /* ANDROID_P2P */
6861                 return -1; /* Not yet supported */
6862 #endif /* ANDROID_P2P */
6863         }
6864
6865         if (legacy_ps == -1)
6866                 return 0;
6867         if (legacy_ps != 0 && legacy_ps != 1)
6868                 return -1; /* Not yet supported */
6869
6870         return nl80211_set_power_save(bss, legacy_ps);
6871 }
6872
6873
6874 static int nl80211_start_radar_detection(void *priv,
6875                                          struct hostapd_freq_params *freq)
6876 {
6877         struct i802_bss *bss = priv;
6878         struct wpa_driver_nl80211_data *drv = bss->drv;
6879         struct nl_msg *msg;
6880         int ret;
6881
6882         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)",
6883                    freq->freq, freq->ht_enabled, freq->vht_enabled,
6884                    freq->bandwidth, freq->center_freq1, freq->center_freq2);
6885
6886         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_RADAR)) {
6887                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support radar "
6888                            "detection");
6889                 return -1;
6890         }
6891
6892         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_RADAR_DETECT)) ||
6893             nl80211_put_freq_params(msg, freq) < 0) {
6894                 nlmsg_free(msg);
6895                 return -1;
6896         }
6897
6898         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6899         if (ret == 0)
6900                 return 0;
6901         wpa_printf(MSG_DEBUG, "nl80211: Failed to start radar detection: "
6902                    "%d (%s)", ret, strerror(-ret));
6903         return -1;
6904 }
6905
6906 #ifdef CONFIG_TDLS
6907
6908 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
6909                                   u8 dialog_token, u16 status_code,
6910                                   u32 peer_capab, int initiator, const u8 *buf,
6911                                   size_t len)
6912 {
6913         struct i802_bss *bss = priv;
6914         struct wpa_driver_nl80211_data *drv = bss->drv;
6915         struct nl_msg *msg;
6916
6917         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
6918                 return -EOPNOTSUPP;
6919
6920         if (!dst)
6921                 return -EINVAL;
6922
6923         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_MGMT)) ||
6924             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6925             nla_put_u8(msg, NL80211_ATTR_TDLS_ACTION, action_code) ||
6926             nla_put_u8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token) ||
6927             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status_code))
6928                 goto fail;
6929         if (peer_capab) {
6930                 /*
6931                  * The internal enum tdls_peer_capability definition is
6932                  * currently identical with the nl80211 enum
6933                  * nl80211_tdls_peer_capability, so no conversion is needed
6934                  * here.
6935                  */
6936                 if (nla_put_u32(msg, NL80211_ATTR_TDLS_PEER_CAPABILITY,
6937                                 peer_capab))
6938                         goto fail;
6939         }
6940         if ((initiator &&
6941              nla_put_flag(msg, NL80211_ATTR_TDLS_INITIATOR)) ||
6942             nla_put(msg, NL80211_ATTR_IE, len, buf))
6943                 goto fail;
6944
6945         return send_and_recv_msgs(drv, msg, NULL, NULL);
6946
6947 fail:
6948         nlmsg_free(msg);
6949         return -ENOBUFS;
6950 }
6951
6952
6953 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
6954 {
6955         struct i802_bss *bss = priv;
6956         struct wpa_driver_nl80211_data *drv = bss->drv;
6957         struct nl_msg *msg;
6958         enum nl80211_tdls_operation nl80211_oper;
6959
6960         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
6961                 return -EOPNOTSUPP;
6962
6963         switch (oper) {
6964         case TDLS_DISCOVERY_REQ:
6965                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
6966                 break;
6967         case TDLS_SETUP:
6968                 nl80211_oper = NL80211_TDLS_SETUP;
6969                 break;
6970         case TDLS_TEARDOWN:
6971                 nl80211_oper = NL80211_TDLS_TEARDOWN;
6972                 break;
6973         case TDLS_ENABLE_LINK:
6974                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
6975                 break;
6976         case TDLS_DISABLE_LINK:
6977                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
6978                 break;
6979         case TDLS_ENABLE:
6980                 return 0;
6981         case TDLS_DISABLE:
6982                 return 0;
6983         default:
6984                 return -EINVAL;
6985         }
6986
6987         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_TDLS_OPER)) ||
6988             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper) ||
6989             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) {
6990                 nlmsg_free(msg);
6991                 return -ENOBUFS;
6992         }
6993
6994         return send_and_recv_msgs(drv, msg, NULL, NULL);
6995 }
6996
6997
6998 static int
6999 nl80211_tdls_enable_channel_switch(void *priv, const u8 *addr, u8 oper_class,
7000                                    const struct hostapd_freq_params *params)
7001 {
7002         struct i802_bss *bss = priv;
7003         struct wpa_driver_nl80211_data *drv = bss->drv;
7004         struct nl_msg *msg;
7005         int ret = -ENOBUFS;
7006
7007         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7008             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7009                 return -EOPNOTSUPP;
7010
7011         wpa_printf(MSG_DEBUG, "nl80211: Enable TDLS channel switch " MACSTR
7012                    " oper_class=%u freq=%u",
7013                    MAC2STR(addr), oper_class, params->freq);
7014         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CHANNEL_SWITCH);
7015         if (!msg ||
7016             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7017             nla_put_u8(msg, NL80211_ATTR_OPER_CLASS, oper_class) ||
7018             (ret = nl80211_put_freq_params(msg, params))) {
7019                 nlmsg_free(msg);
7020                 wpa_printf(MSG_DEBUG, "nl80211: Could not build TDLS chan switch");
7021                 return ret;
7022         }
7023
7024         return send_and_recv_msgs(drv, msg, NULL, NULL);
7025 }
7026
7027
7028 static int
7029 nl80211_tdls_disable_channel_switch(void *priv, const u8 *addr)
7030 {
7031         struct i802_bss *bss = priv;
7032         struct wpa_driver_nl80211_data *drv = bss->drv;
7033         struct nl_msg *msg;
7034
7035         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) ||
7036             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH))
7037                 return -EOPNOTSUPP;
7038
7039         wpa_printf(MSG_DEBUG, "nl80211: Disable TDLS channel switch " MACSTR,
7040                    MAC2STR(addr));
7041         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH);
7042         if (!msg ||
7043             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7044                 nlmsg_free(msg);
7045                 wpa_printf(MSG_DEBUG,
7046                            "nl80211: Could not build TDLS cancel chan switch");
7047                 return -ENOBUFS;
7048         }
7049
7050         return send_and_recv_msgs(drv, msg, NULL, NULL);
7051 }
7052
7053 #endif /* CONFIG TDLS */
7054
7055
7056 static int driver_nl80211_set_key(const char *ifname, void *priv,
7057                                   enum wpa_alg alg, const u8 *addr,
7058                                   int key_idx, int set_tx,
7059                                   const u8 *seq, size_t seq_len,
7060                                   const u8 *key, size_t key_len)
7061 {
7062         struct i802_bss *bss = priv;
7063         return wpa_driver_nl80211_set_key(ifname, bss, alg, addr, key_idx,
7064                                           set_tx, seq, seq_len, key, key_len);
7065 }
7066
7067
7068 static int driver_nl80211_scan2(void *priv,
7069                                 struct wpa_driver_scan_params *params)
7070 {
7071         struct i802_bss *bss = priv;
7072         return wpa_driver_nl80211_scan(bss, params);
7073 }
7074
7075
7076 static int driver_nl80211_deauthenticate(void *priv, const u8 *addr,
7077                                          int reason_code)
7078 {
7079         struct i802_bss *bss = priv;
7080         return wpa_driver_nl80211_deauthenticate(bss, addr, reason_code);
7081 }
7082
7083
7084 static int driver_nl80211_authenticate(void *priv,
7085                                        struct wpa_driver_auth_params *params)
7086 {
7087         struct i802_bss *bss = priv;
7088         return wpa_driver_nl80211_authenticate(bss, params);
7089 }
7090
7091
7092 static void driver_nl80211_deinit(void *priv)
7093 {
7094         struct i802_bss *bss = priv;
7095         wpa_driver_nl80211_deinit(bss);
7096 }
7097
7098
7099 static int driver_nl80211_if_remove(void *priv, enum wpa_driver_if_type type,
7100                                     const char *ifname)
7101 {
7102         struct i802_bss *bss = priv;
7103         return wpa_driver_nl80211_if_remove(bss, type, ifname);
7104 }
7105
7106
7107 static int driver_nl80211_send_mlme(void *priv, const u8 *data,
7108                                     size_t data_len, int noack)
7109 {
7110         struct i802_bss *bss = priv;
7111         return wpa_driver_nl80211_send_mlme(bss, data, data_len, noack,
7112                                             0, 0, 0, 0);
7113 }
7114
7115
7116 static int driver_nl80211_sta_remove(void *priv, const u8 *addr)
7117 {
7118         struct i802_bss *bss = priv;
7119         return wpa_driver_nl80211_sta_remove(bss, addr, -1, 0);
7120 }
7121
7122
7123 static int driver_nl80211_set_sta_vlan(void *priv, const u8 *addr,
7124                                        const char *ifname, int vlan_id)
7125 {
7126         struct i802_bss *bss = priv;
7127         return i802_set_sta_vlan(bss, addr, ifname, vlan_id);
7128 }
7129
7130
7131 static int driver_nl80211_read_sta_data(void *priv,
7132                                         struct hostap_sta_driver_data *data,
7133                                         const u8 *addr)
7134 {
7135         struct i802_bss *bss = priv;
7136         return i802_read_sta_data(bss, data, addr);
7137 }
7138
7139
7140 static int driver_nl80211_send_action(void *priv, unsigned int freq,
7141                                       unsigned int wait_time,
7142                                       const u8 *dst, const u8 *src,
7143                                       const u8 *bssid,
7144                                       const u8 *data, size_t data_len,
7145                                       int no_cck)
7146 {
7147         struct i802_bss *bss = priv;
7148         return wpa_driver_nl80211_send_action(bss, freq, wait_time, dst, src,
7149                                               bssid, data, data_len, no_cck);
7150 }
7151
7152
7153 static int driver_nl80211_probe_req_report(void *priv, int report)
7154 {
7155         struct i802_bss *bss = priv;
7156         return wpa_driver_nl80211_probe_req_report(bss, report);
7157 }
7158
7159
7160 static int wpa_driver_nl80211_update_ft_ies(void *priv, const u8 *md,
7161                                             const u8 *ies, size_t ies_len)
7162 {
7163         int ret;
7164         struct nl_msg *msg;
7165         struct i802_bss *bss = priv;
7166         struct wpa_driver_nl80211_data *drv = bss->drv;
7167         u16 mdid = WPA_GET_LE16(md);
7168
7169         wpa_printf(MSG_DEBUG, "nl80211: Updating FT IEs");
7170         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_FT_IES)) ||
7171             nla_put(msg, NL80211_ATTR_IE, ies_len, ies) ||
7172             nla_put_u16(msg, NL80211_ATTR_MDID, mdid)) {
7173                 nlmsg_free(msg);
7174                 return -ENOBUFS;
7175         }
7176
7177         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7178         if (ret) {
7179                 wpa_printf(MSG_DEBUG, "nl80211: update_ft_ies failed "
7180                            "err=%d (%s)", ret, strerror(-ret));
7181         }
7182
7183         return ret;
7184 }
7185
7186
7187 const u8 * wpa_driver_nl80211_get_macaddr(void *priv)
7188 {
7189         struct i802_bss *bss = priv;
7190         struct wpa_driver_nl80211_data *drv = bss->drv;
7191
7192         if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE)
7193                 return NULL;
7194
7195         return bss->addr;
7196 }
7197
7198
7199 static const char * scan_state_str(enum scan_states scan_state)
7200 {
7201         switch (scan_state) {
7202         case NO_SCAN:
7203                 return "NO_SCAN";
7204         case SCAN_REQUESTED:
7205                 return "SCAN_REQUESTED";
7206         case SCAN_STARTED:
7207                 return "SCAN_STARTED";
7208         case SCAN_COMPLETED:
7209                 return "SCAN_COMPLETED";
7210         case SCAN_ABORTED:
7211                 return "SCAN_ABORTED";
7212         case SCHED_SCAN_STARTED:
7213                 return "SCHED_SCAN_STARTED";
7214         case SCHED_SCAN_STOPPED:
7215                 return "SCHED_SCAN_STOPPED";
7216         case SCHED_SCAN_RESULTS:
7217                 return "SCHED_SCAN_RESULTS";
7218         }
7219
7220         return "??";
7221 }
7222
7223
7224 static int wpa_driver_nl80211_status(void *priv, char *buf, size_t buflen)
7225 {
7226         struct i802_bss *bss = priv;
7227         struct wpa_driver_nl80211_data *drv = bss->drv;
7228         int res;
7229         char *pos, *end;
7230
7231         pos = buf;
7232         end = buf + buflen;
7233
7234         res = os_snprintf(pos, end - pos,
7235                           "ifindex=%d\n"
7236                           "ifname=%s\n"
7237                           "brname=%s\n"
7238                           "addr=" MACSTR "\n"
7239                           "freq=%d\n"
7240                           "%s%s%s%s%s",
7241                           bss->ifindex,
7242                           bss->ifname,
7243                           bss->brname,
7244                           MAC2STR(bss->addr),
7245                           bss->freq,
7246                           bss->beacon_set ? "beacon_set=1\n" : "",
7247                           bss->added_if_into_bridge ?
7248                           "added_if_into_bridge=1\n" : "",
7249                           bss->added_bridge ? "added_bridge=1\n" : "",
7250                           bss->in_deinit ? "in_deinit=1\n" : "",
7251                           bss->if_dynamic ? "if_dynamic=1\n" : "");
7252         if (os_snprintf_error(end - pos, res))
7253                 return pos - buf;
7254         pos += res;
7255
7256         if (bss->wdev_id_set) {
7257                 res = os_snprintf(pos, end - pos, "wdev_id=%llu\n",
7258                                   (unsigned long long) bss->wdev_id);
7259                 if (os_snprintf_error(end - pos, res))
7260                         return pos - buf;
7261                 pos += res;
7262         }
7263
7264         res = os_snprintf(pos, end - pos,
7265                           "phyname=%s\n"
7266                           "perm_addr=" MACSTR "\n"
7267                           "drv_ifindex=%d\n"
7268                           "operstate=%d\n"
7269                           "scan_state=%s\n"
7270                           "auth_bssid=" MACSTR "\n"
7271                           "auth_attempt_bssid=" MACSTR "\n"
7272                           "bssid=" MACSTR "\n"
7273                           "prev_bssid=" MACSTR "\n"
7274                           "associated=%d\n"
7275                           "assoc_freq=%u\n"
7276                           "monitor_sock=%d\n"
7277                           "monitor_ifidx=%d\n"
7278                           "monitor_refcount=%d\n"
7279                           "last_mgmt_freq=%u\n"
7280                           "eapol_tx_sock=%d\n"
7281                           "%s%s%s%s%s%s%s%s%s%s%s%s%s",
7282                           drv->phyname,
7283                           MAC2STR(drv->perm_addr),
7284                           drv->ifindex,
7285                           drv->operstate,
7286                           scan_state_str(drv->scan_state),
7287                           MAC2STR(drv->auth_bssid),
7288                           MAC2STR(drv->auth_attempt_bssid),
7289                           MAC2STR(drv->bssid),
7290                           MAC2STR(drv->prev_bssid),
7291                           drv->associated,
7292                           drv->assoc_freq,
7293                           drv->monitor_sock,
7294                           drv->monitor_ifidx,
7295                           drv->monitor_refcount,
7296                           drv->last_mgmt_freq,
7297                           drv->eapol_tx_sock,
7298                           drv->ignore_if_down_event ?
7299                           "ignore_if_down_event=1\n" : "",
7300                           drv->scan_complete_events ?
7301                           "scan_complete_events=1\n" : "",
7302                           drv->disabled_11b_rates ?
7303                           "disabled_11b_rates=1\n" : "",
7304                           drv->pending_remain_on_chan ?
7305                           "pending_remain_on_chan=1\n" : "",
7306                           drv->in_interface_list ? "in_interface_list=1\n" : "",
7307                           drv->device_ap_sme ? "device_ap_sme=1\n" : "",
7308                           drv->poll_command_supported ?
7309                           "poll_command_supported=1\n" : "",
7310                           drv->data_tx_status ? "data_tx_status=1\n" : "",
7311                           drv->scan_for_auth ? "scan_for_auth=1\n" : "",
7312                           drv->retry_auth ? "retry_auth=1\n" : "",
7313                           drv->use_monitor ? "use_monitor=1\n" : "",
7314                           drv->ignore_next_local_disconnect ?
7315                           "ignore_next_local_disconnect=1\n" : "",
7316                           drv->ignore_next_local_deauth ?
7317                           "ignore_next_local_deauth=1\n" : "");
7318         if (os_snprintf_error(end - pos, res))
7319                 return pos - buf;
7320         pos += res;
7321
7322         if (drv->has_capability) {
7323                 res = os_snprintf(pos, end - pos,
7324                                   "capa.key_mgmt=0x%x\n"
7325                                   "capa.enc=0x%x\n"
7326                                   "capa.auth=0x%x\n"
7327                                   "capa.flags=0x%llx\n"
7328                                   "capa.rrm_flags=0x%x\n"
7329                                   "capa.max_scan_ssids=%d\n"
7330                                   "capa.max_sched_scan_ssids=%d\n"
7331                                   "capa.sched_scan_supported=%d\n"
7332                                   "capa.max_match_sets=%d\n"
7333                                   "capa.max_remain_on_chan=%u\n"
7334                                   "capa.max_stations=%u\n"
7335                                   "capa.probe_resp_offloads=0x%x\n"
7336                                   "capa.max_acl_mac_addrs=%u\n"
7337                                   "capa.num_multichan_concurrent=%u\n"
7338                                   "capa.mac_addr_rand_sched_scan_supported=%d\n"
7339                                   "capa.mac_addr_rand_scan_supported=%d\n",
7340                                   drv->capa.key_mgmt,
7341                                   drv->capa.enc,
7342                                   drv->capa.auth,
7343                                   (unsigned long long) drv->capa.flags,
7344                                   drv->capa.rrm_flags,
7345                                   drv->capa.max_scan_ssids,
7346                                   drv->capa.max_sched_scan_ssids,
7347                                   drv->capa.sched_scan_supported,
7348                                   drv->capa.max_match_sets,
7349                                   drv->capa.max_remain_on_chan,
7350                                   drv->capa.max_stations,
7351                                   drv->capa.probe_resp_offloads,
7352                                   drv->capa.max_acl_mac_addrs,
7353                                   drv->capa.num_multichan_concurrent,
7354                                   drv->capa.mac_addr_rand_sched_scan_supported,
7355                                   drv->capa.mac_addr_rand_scan_supported);
7356                 if (os_snprintf_error(end - pos, res))
7357                         return pos - buf;
7358                 pos += res;
7359         }
7360
7361         return pos - buf;
7362 }
7363
7364
7365 static int set_beacon_data(struct nl_msg *msg, struct beacon_data *settings)
7366 {
7367         if ((settings->head &&
7368              nla_put(msg, NL80211_ATTR_BEACON_HEAD,
7369                      settings->head_len, settings->head)) ||
7370             (settings->tail &&
7371              nla_put(msg, NL80211_ATTR_BEACON_TAIL,
7372                      settings->tail_len, settings->tail)) ||
7373             (settings->beacon_ies &&
7374              nla_put(msg, NL80211_ATTR_IE,
7375                      settings->beacon_ies_len, settings->beacon_ies)) ||
7376             (settings->proberesp_ies &&
7377              nla_put(msg, NL80211_ATTR_IE_PROBE_RESP,
7378                      settings->proberesp_ies_len, settings->proberesp_ies)) ||
7379             (settings->assocresp_ies &&
7380              nla_put(msg, NL80211_ATTR_IE_ASSOC_RESP,
7381                      settings->assocresp_ies_len, settings->assocresp_ies)) ||
7382             (settings->probe_resp &&
7383              nla_put(msg, NL80211_ATTR_PROBE_RESP,
7384                      settings->probe_resp_len, settings->probe_resp)))
7385                 return -ENOBUFS;
7386
7387         return 0;
7388 }
7389
7390
7391 static int nl80211_switch_channel(void *priv, struct csa_settings *settings)
7392 {
7393         struct nl_msg *msg;
7394         struct i802_bss *bss = priv;
7395         struct wpa_driver_nl80211_data *drv = bss->drv;
7396         struct nlattr *beacon_csa;
7397         int ret = -ENOBUFS;
7398
7399         wpa_printf(MSG_DEBUG, "nl80211: Channel switch request (cs_count=%u block_tx=%u freq=%d width=%d cf1=%d cf2=%d)",
7400                    settings->cs_count, settings->block_tx,
7401                    settings->freq_params.freq, settings->freq_params.bandwidth,
7402                    settings->freq_params.center_freq1,
7403                    settings->freq_params.center_freq2);
7404
7405         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_AP_CSA)) {
7406                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support channel switch command");
7407                 return -EOPNOTSUPP;
7408         }
7409
7410         if ((drv->nlmode != NL80211_IFTYPE_AP) &&
7411             (drv->nlmode != NL80211_IFTYPE_P2P_GO))
7412                 return -EOPNOTSUPP;
7413
7414         /* check settings validity */
7415         if (!settings->beacon_csa.tail ||
7416             ((settings->beacon_csa.tail_len <=
7417               settings->counter_offset_beacon) ||
7418              (settings->beacon_csa.tail[settings->counter_offset_beacon] !=
7419               settings->cs_count)))
7420                 return -EINVAL;
7421
7422         if (settings->beacon_csa.probe_resp &&
7423             ((settings->beacon_csa.probe_resp_len <=
7424               settings->counter_offset_presp) ||
7425              (settings->beacon_csa.probe_resp[settings->counter_offset_presp] !=
7426               settings->cs_count)))
7427                 return -EINVAL;
7428
7429         if (!(msg = nl80211_bss_msg(bss, 0, NL80211_CMD_CHANNEL_SWITCH)) ||
7430             nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT,
7431                         settings->cs_count) ||
7432             (ret = nl80211_put_freq_params(msg, &settings->freq_params)) ||
7433             (settings->block_tx &&
7434              nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX)))
7435                 goto error;
7436
7437         /* beacon_after params */
7438         ret = set_beacon_data(msg, &settings->beacon_after);
7439         if (ret)
7440                 goto error;
7441
7442         /* beacon_csa params */
7443         beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
7444         if (!beacon_csa)
7445                 goto fail;
7446
7447         ret = set_beacon_data(msg, &settings->beacon_csa);
7448         if (ret)
7449                 goto error;
7450
7451         if (nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_BEACON,
7452                         settings->counter_offset_beacon) ||
7453             (settings->beacon_csa.probe_resp &&
7454              nla_put_u16(msg, NL80211_ATTR_CSA_C_OFF_PRESP,
7455                          settings->counter_offset_presp)))
7456                 goto fail;
7457
7458         nla_nest_end(msg, beacon_csa);
7459         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7460         if (ret) {
7461                 wpa_printf(MSG_DEBUG, "nl80211: switch_channel failed err=%d (%s)",
7462                            ret, strerror(-ret));
7463         }
7464         return ret;
7465
7466 fail:
7467         ret = -ENOBUFS;
7468 error:
7469         nlmsg_free(msg);
7470         wpa_printf(MSG_DEBUG, "nl80211: Could not build channel switch request");
7471         return ret;
7472 }
7473
7474
7475 static int nl80211_add_ts(void *priv, u8 tsid, const u8 *addr,
7476                           u8 user_priority, u16 admitted_time)
7477 {
7478         struct i802_bss *bss = priv;
7479         struct wpa_driver_nl80211_data *drv = bss->drv;
7480         struct nl_msg *msg;
7481         int ret;
7482
7483         wpa_printf(MSG_DEBUG,
7484                    "nl80211: add_ts request: tsid=%u admitted_time=%u up=%d",
7485                    tsid, admitted_time, user_priority);
7486
7487         if (!is_sta_interface(drv->nlmode))
7488                 return -ENOTSUP;
7489
7490         msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_ADD_TX_TS);
7491         if (!msg ||
7492             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7493             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
7494             nla_put_u8(msg, NL80211_ATTR_USER_PRIO, user_priority) ||
7495             nla_put_u16(msg, NL80211_ATTR_ADMITTED_TIME, admitted_time)) {
7496                 nlmsg_free(msg);
7497                 return -ENOBUFS;
7498         }
7499
7500         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7501         if (ret)
7502                 wpa_printf(MSG_DEBUG, "nl80211: add_ts failed err=%d (%s)",
7503                            ret, strerror(-ret));
7504         return ret;
7505 }
7506
7507
7508 static int nl80211_del_ts(void *priv, u8 tsid, const u8 *addr)
7509 {
7510         struct i802_bss *bss = priv;
7511         struct wpa_driver_nl80211_data *drv = bss->drv;
7512         struct nl_msg *msg;
7513         int ret;
7514
7515         wpa_printf(MSG_DEBUG, "nl80211: del_ts request: tsid=%u", tsid);
7516
7517         if (!is_sta_interface(drv->nlmode))
7518                 return -ENOTSUP;
7519
7520         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_DEL_TX_TS)) ||
7521             nla_put_u8(msg, NL80211_ATTR_TSID, tsid) ||
7522             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) {
7523                 nlmsg_free(msg);
7524                 return -ENOBUFS;
7525         }
7526
7527         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7528         if (ret)
7529                 wpa_printf(MSG_DEBUG, "nl80211: del_ts failed err=%d (%s)",
7530                            ret, strerror(-ret));
7531         return ret;
7532 }
7533
7534
7535 #ifdef CONFIG_TESTING_OPTIONS
7536 static int cmd_reply_handler(struct nl_msg *msg, void *arg)
7537 {
7538         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7539         struct wpabuf *buf = arg;
7540
7541         if (!buf)
7542                 return NL_SKIP;
7543
7544         if ((size_t) genlmsg_attrlen(gnlh, 0) > wpabuf_tailroom(buf)) {
7545                 wpa_printf(MSG_INFO, "nl80211: insufficient buffer space for reply");
7546                 return NL_SKIP;
7547         }
7548
7549         wpabuf_put_data(buf, genlmsg_attrdata(gnlh, 0),
7550                         genlmsg_attrlen(gnlh, 0));
7551
7552         return NL_SKIP;
7553 }
7554 #endif /* CONFIG_TESTING_OPTIONS */
7555
7556
7557 static int vendor_reply_handler(struct nl_msg *msg, void *arg)
7558 {
7559         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7560         struct nlattr *nl_vendor_reply, *nl;
7561         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7562         struct wpabuf *buf = arg;
7563         int rem;
7564
7565         if (!buf)
7566                 return NL_SKIP;
7567
7568         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7569                   genlmsg_attrlen(gnlh, 0), NULL);
7570         nl_vendor_reply = tb[NL80211_ATTR_VENDOR_DATA];
7571
7572         if (!nl_vendor_reply)
7573                 return NL_SKIP;
7574
7575         if ((size_t) nla_len(nl_vendor_reply) > wpabuf_tailroom(buf)) {
7576                 wpa_printf(MSG_INFO, "nl80211: Vendor command: insufficient buffer space for reply");
7577                 return NL_SKIP;
7578         }
7579
7580         nla_for_each_nested(nl, nl_vendor_reply, rem) {
7581                 wpabuf_put_data(buf, nla_data(nl), nla_len(nl));
7582         }
7583
7584         return NL_SKIP;
7585 }
7586
7587
7588 static int nl80211_vendor_cmd(void *priv, unsigned int vendor_id,
7589                               unsigned int subcmd, const u8 *data,
7590                               size_t data_len, struct wpabuf *buf)
7591 {
7592         struct i802_bss *bss = priv;
7593         struct wpa_driver_nl80211_data *drv = bss->drv;
7594         struct nl_msg *msg;
7595         int ret;
7596
7597 #ifdef CONFIG_TESTING_OPTIONS
7598         if (vendor_id == 0xffffffff) {
7599                 msg = nlmsg_alloc();
7600                 if (!msg)
7601                         return -ENOMEM;
7602
7603                 nl80211_cmd(drv, msg, 0, subcmd);
7604                 if (nlmsg_append(msg, (void *) data, data_len, NLMSG_ALIGNTO) <
7605                     0)
7606                         goto fail;
7607                 ret = send_and_recv_msgs(drv, msg, cmd_reply_handler, buf);
7608                 if (ret)
7609                         wpa_printf(MSG_DEBUG, "nl80211: command failed err=%d",
7610                                    ret);
7611                 return ret;
7612         }
7613 #endif /* CONFIG_TESTING_OPTIONS */
7614
7615         if (!(msg = nl80211_cmd_msg(bss, 0, NL80211_CMD_VENDOR)) ||
7616             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, vendor_id) ||
7617             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, subcmd) ||
7618             (data &&
7619              nla_put(msg, NL80211_ATTR_VENDOR_DATA, data_len, data)))
7620                 goto fail;
7621
7622         ret = send_and_recv_msgs(drv, msg, vendor_reply_handler, buf);
7623         if (ret)
7624                 wpa_printf(MSG_DEBUG, "nl80211: vendor command failed err=%d",
7625                            ret);
7626         return ret;
7627
7628 fail:
7629         nlmsg_free(msg);
7630         return -ENOBUFS;
7631 }
7632
7633
7634 static int nl80211_set_qos_map(void *priv, const u8 *qos_map_set,
7635                                u8 qos_map_set_len)
7636 {
7637         struct i802_bss *bss = priv;
7638         struct wpa_driver_nl80211_data *drv = bss->drv;
7639         struct nl_msg *msg;
7640         int ret;
7641
7642         wpa_hexdump(MSG_DEBUG, "nl80211: Setting QoS Map",
7643                     qos_map_set, qos_map_set_len);
7644
7645         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_QOS_MAP)) ||
7646             nla_put(msg, NL80211_ATTR_QOS_MAP, qos_map_set_len, qos_map_set)) {
7647                 nlmsg_free(msg);
7648                 return -ENOBUFS;
7649         }
7650
7651         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7652         if (ret)
7653                 wpa_printf(MSG_DEBUG, "nl80211: Setting QoS Map failed");
7654
7655         return ret;
7656 }
7657
7658
7659 static int nl80211_set_wowlan(void *priv,
7660                               const struct wowlan_triggers *triggers)
7661 {
7662         struct i802_bss *bss = priv;
7663         struct wpa_driver_nl80211_data *drv = bss->drv;
7664         struct nl_msg *msg;
7665         struct nlattr *wowlan_triggers;
7666         int ret;
7667
7668         wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan");
7669
7670         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_WOWLAN)) ||
7671             !(wowlan_triggers = nla_nest_start(msg,
7672                                                NL80211_ATTR_WOWLAN_TRIGGERS)) ||
7673             (triggers->any &&
7674              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7675             (triggers->disconnect &&
7676              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7677             (triggers->magic_pkt &&
7678              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7679             (triggers->gtk_rekey_failure &&
7680              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7681             (triggers->eap_identity_req &&
7682              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7683             (triggers->four_way_handshake &&
7684              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7685             (triggers->rfkill_release &&
7686              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) {
7687                 nlmsg_free(msg);
7688                 return -ENOBUFS;
7689         }
7690
7691         nla_nest_end(msg, wowlan_triggers);
7692
7693         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7694         if (ret)
7695                 wpa_printf(MSG_DEBUG, "nl80211: Setting wowlan failed");
7696
7697         return ret;
7698 }
7699
7700
7701 static int nl80211_roaming(void *priv, int allowed, const u8 *bssid)
7702 {
7703         struct i802_bss *bss = priv;
7704         struct wpa_driver_nl80211_data *drv = bss->drv;
7705         struct nl_msg *msg;
7706         struct nlattr *params;
7707
7708         wpa_printf(MSG_DEBUG, "nl80211: Roaming policy: allowed=%d", allowed);
7709
7710         if (!drv->roaming_vendor_cmd_avail) {
7711                 wpa_printf(MSG_DEBUG,
7712                            "nl80211: Ignore roaming policy change since driver does not provide command for setting it");
7713                 return -1;
7714         }
7715
7716         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
7717             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
7718             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
7719                         QCA_NL80211_VENDOR_SUBCMD_ROAMING) ||
7720             !(params = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
7721             nla_put_u32(msg, QCA_WLAN_VENDOR_ATTR_ROAMING_POLICY,
7722                         allowed ? QCA_ROAMING_ALLOWED_WITHIN_ESS :
7723                         QCA_ROAMING_NOT_ALLOWED) ||
7724             (bssid &&
7725              nla_put(msg, QCA_WLAN_VENDOR_ATTR_MAC_ADDR, ETH_ALEN, bssid))) {
7726                 nlmsg_free(msg);
7727                 return -1;
7728         }
7729         nla_nest_end(msg, params);
7730
7731         return send_and_recv_msgs(drv, msg, NULL, NULL);
7732 }
7733
7734
7735 static int nl80211_set_mac_addr(void *priv, const u8 *addr)
7736 {
7737         struct i802_bss *bss = priv;
7738         struct wpa_driver_nl80211_data *drv = bss->drv;
7739         int new_addr = addr != NULL;
7740
7741         if (!addr)
7742                 addr = drv->perm_addr;
7743
7744         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) < 0)
7745                 return -1;
7746
7747         if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, addr) < 0)
7748         {
7749                 wpa_printf(MSG_DEBUG,
7750                            "nl80211: failed to set_mac_addr for %s to " MACSTR,
7751                            bss->ifname, MAC2STR(addr));
7752                 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname,
7753                                           1) < 0) {
7754                         wpa_printf(MSG_DEBUG,
7755                                    "nl80211: Could not restore interface UP after failed set_mac_addr");
7756                 }
7757                 return -1;
7758         }
7759
7760         wpa_printf(MSG_DEBUG, "nl80211: set_mac_addr for %s to " MACSTR,
7761                    bss->ifname, MAC2STR(addr));
7762         drv->addr_changed = new_addr;
7763         os_memcpy(bss->addr, addr, ETH_ALEN);
7764
7765         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1) < 0)
7766         {
7767                 wpa_printf(MSG_DEBUG,
7768                            "nl80211: Could not restore interface UP after set_mac_addr");
7769         }
7770
7771         return 0;
7772 }
7773
7774
7775 #ifdef CONFIG_MESH
7776
7777 static int wpa_driver_nl80211_init_mesh(void *priv)
7778 {
7779         if (wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_MESH_POINT)) {
7780                 wpa_printf(MSG_INFO,
7781                            "nl80211: Failed to set interface into mesh mode");
7782                 return -1;
7783         }
7784         return 0;
7785 }
7786
7787
7788 static int
7789 wpa_driver_nl80211_join_mesh(void *priv,
7790                              struct wpa_driver_mesh_join_params *params)
7791 {
7792         struct i802_bss *bss = priv;
7793         struct wpa_driver_nl80211_data *drv = bss->drv;
7794         struct nl_msg *msg;
7795         struct nlattr *container;
7796         int ret = 0;
7797
7798         wpa_printf(MSG_DEBUG, "nl80211: mesh join (ifindex=%d)", drv->ifindex);
7799         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_JOIN_MESH);
7800         if (!msg)
7801                 goto fail;
7802         if (params->freq) {
7803                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
7804                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq))
7805                         goto fail;
7806         }
7807
7808         if (params->ht_mode) {
7809                 unsigned int ht_value;
7810                 char *ht_mode = "";
7811
7812                 switch (params->ht_mode) {
7813                 default:
7814                 case CHAN_NO_HT:
7815                         ht_value = NL80211_CHAN_NO_HT;
7816                         ht_mode = "NOHT";
7817                         break;
7818                 case CHAN_HT20:
7819                         ht_value = NL80211_CHAN_HT20;
7820                         ht_mode = "HT20";
7821                         break;
7822                 case CHAN_HT40PLUS:
7823                         ht_value = NL80211_CHAN_HT40PLUS;
7824                         ht_mode = "HT40+";
7825                         break;
7826                 case CHAN_HT40MINUS:
7827                         ht_value = NL80211_CHAN_HT40MINUS;
7828                         ht_mode = "HT40-";
7829                         break;
7830                 }
7831                 wpa_printf(MSG_DEBUG, "  * ht_mode=%s", ht_mode);
7832                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, ht_value))
7833                         goto fail;
7834         }
7835
7836         if (params->basic_rates) {
7837                 u8 rates[NL80211_MAX_SUPP_RATES];
7838                 u8 rates_len = 0;
7839                 int i;
7840
7841                 for (i = 0; i < NL80211_MAX_SUPP_RATES; i++) {
7842                         if (params->basic_rates[i] < 0)
7843                                 break;
7844                         rates[rates_len++] = params->basic_rates[i] / 5;
7845                 }
7846
7847                 if (nla_put(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len,
7848                             rates))
7849                         goto fail;
7850         }
7851
7852         if (params->meshid) {
7853                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
7854                                   params->meshid, params->meshid_len);
7855                 if (nla_put(msg, NL80211_ATTR_MESH_ID, params->meshid_len,
7856                             params->meshid))
7857                         goto fail;
7858         }
7859
7860         if (params->beacon_int > 0) {
7861                 wpa_printf(MSG_DEBUG, "  * beacon_int=%d", params->beacon_int);
7862                 if (nla_put_u32(msg, NL80211_ATTR_BEACON_INTERVAL,
7863                                 params->beacon_int))
7864                         goto fail;
7865         }
7866
7867         wpa_printf(MSG_DEBUG, "  * flags=%08X", params->flags);
7868
7869         container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
7870         if (!container)
7871                 goto fail;
7872
7873         if (params->ies) {
7874                 wpa_hexdump(MSG_DEBUG, "  * IEs", params->ies, params->ie_len);
7875                 if (nla_put(msg, NL80211_MESH_SETUP_IE, params->ie_len,
7876                             params->ies))
7877                         goto fail;
7878         }
7879         /* WPA_DRIVER_MESH_FLAG_OPEN_AUTH is treated as default by nl80211 */
7880         if (params->flags & WPA_DRIVER_MESH_FLAG_SAE_AUTH) {
7881                 if (nla_put_u8(msg, NL80211_MESH_SETUP_AUTH_PROTOCOL, 0x1) ||
7882                     nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AUTH))
7883                         goto fail;
7884         }
7885         if ((params->flags & WPA_DRIVER_MESH_FLAG_AMPE) &&
7886             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_AMPE))
7887                 goto fail;
7888         if ((params->flags & WPA_DRIVER_MESH_FLAG_USER_MPM) &&
7889             nla_put_flag(msg, NL80211_MESH_SETUP_USERSPACE_MPM))
7890                 goto fail;
7891         nla_nest_end(msg, container);
7892
7893         container = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
7894         if (!container)
7895                 goto fail;
7896
7897         if (!(params->conf.flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
7898             nla_put_u32(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 0))
7899                 goto fail;
7900         if ((params->conf.flags & WPA_DRIVER_MESH_FLAG_DRIVER_MPM) &&
7901             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7902                         params->max_peer_links))
7903                 goto fail;
7904         nla_nest_end(msg, container);
7905
7906         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7907         msg = NULL;
7908         if (ret) {
7909                 wpa_printf(MSG_DEBUG, "nl80211: mesh join failed: ret=%d (%s)",
7910                            ret, strerror(-ret));
7911                 goto fail;
7912         }
7913         ret = 0;
7914         bss->freq = params->freq;
7915         wpa_printf(MSG_DEBUG, "nl80211: mesh join request send successfully");
7916
7917 fail:
7918         nlmsg_free(msg);
7919         return ret;
7920 }
7921
7922
7923 static int wpa_driver_nl80211_leave_mesh(void *priv)
7924 {
7925         struct i802_bss *bss = priv;
7926         struct wpa_driver_nl80211_data *drv = bss->drv;
7927         struct nl_msg *msg;
7928         int ret;
7929
7930         wpa_printf(MSG_DEBUG, "nl80211: mesh leave (ifindex=%d)", drv->ifindex);
7931         msg = nl80211_drv_msg(drv, 0, NL80211_CMD_LEAVE_MESH);
7932         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7933         if (ret) {
7934                 wpa_printf(MSG_DEBUG, "nl80211: mesh leave failed: ret=%d (%s)",
7935                            ret, strerror(-ret));
7936         } else {
7937                 wpa_printf(MSG_DEBUG,
7938                            "nl80211: mesh leave request send successfully");
7939         }
7940
7941         if (wpa_driver_nl80211_set_mode(drv->first_bss,
7942                                         NL80211_IFTYPE_STATION)) {
7943                 wpa_printf(MSG_INFO,
7944                            "nl80211: Failed to set interface into station mode");
7945         }
7946         return ret;
7947 }
7948
7949 #endif /* CONFIG_MESH */
7950
7951
7952 static int wpa_driver_br_add_ip_neigh(void *priv, u8 version,
7953                                       const u8 *ipaddr, int prefixlen,
7954                                       const u8 *addr)
7955 {
7956 #ifdef CONFIG_LIBNL3_ROUTE
7957         struct i802_bss *bss = priv;
7958         struct wpa_driver_nl80211_data *drv = bss->drv;
7959         struct rtnl_neigh *rn;
7960         struct nl_addr *nl_ipaddr = NULL;
7961         struct nl_addr *nl_lladdr = NULL;
7962         int family, addrsize;
7963         int res;
7964
7965         if (!ipaddr || prefixlen == 0 || !addr)
7966                 return -EINVAL;
7967
7968         if (bss->br_ifindex == 0) {
7969                 wpa_printf(MSG_DEBUG,
7970                            "nl80211: bridge must be set before adding an ip neigh to it");
7971                 return -1;
7972         }
7973
7974         if (!drv->rtnl_sk) {
7975                 wpa_printf(MSG_DEBUG,
7976                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
7977                 return -1;
7978         }
7979
7980         if (version == 4) {
7981                 family = AF_INET;
7982                 addrsize = 4;
7983         } else if (version == 6) {
7984                 family = AF_INET6;
7985                 addrsize = 16;
7986         } else {
7987                 return -EINVAL;
7988         }
7989
7990         rn = rtnl_neigh_alloc();
7991         if (rn == NULL)
7992                 return -ENOMEM;
7993
7994         /* set the destination ip address for neigh */
7995         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
7996         if (nl_ipaddr == NULL) {
7997                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
7998                 res = -ENOMEM;
7999                 goto errout;
8000         }
8001         nl_addr_set_prefixlen(nl_ipaddr, prefixlen);
8002         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8003         if (res) {
8004                 wpa_printf(MSG_DEBUG,
8005                            "nl80211: neigh set destination addr failed");
8006                 goto errout;
8007         }
8008
8009         /* set the corresponding lladdr for neigh */
8010         nl_lladdr = nl_addr_build(AF_BRIDGE, (u8 *) addr, ETH_ALEN);
8011         if (nl_lladdr == NULL) {
8012                 wpa_printf(MSG_DEBUG, "nl80211: neigh set lladdr failed");
8013                 res = -ENOMEM;
8014                 goto errout;
8015         }
8016         rtnl_neigh_set_lladdr(rn, nl_lladdr);
8017
8018         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8019         rtnl_neigh_set_state(rn, NUD_PERMANENT);
8020
8021         res = rtnl_neigh_add(drv->rtnl_sk, rn, NLM_F_CREATE);
8022         if (res) {
8023                 wpa_printf(MSG_DEBUG,
8024                            "nl80211: Adding bridge ip neigh failed: %s",
8025                            strerror(errno));
8026         }
8027 errout:
8028         if (nl_lladdr)
8029                 nl_addr_put(nl_lladdr);
8030         if (nl_ipaddr)
8031                 nl_addr_put(nl_ipaddr);
8032         if (rn)
8033                 rtnl_neigh_put(rn);
8034         return res;
8035 #else /* CONFIG_LIBNL3_ROUTE */
8036         return -1;
8037 #endif /* CONFIG_LIBNL3_ROUTE */
8038 }
8039
8040
8041 static int wpa_driver_br_delete_ip_neigh(void *priv, u8 version,
8042                                          const u8 *ipaddr)
8043 {
8044 #ifdef CONFIG_LIBNL3_ROUTE
8045         struct i802_bss *bss = priv;
8046         struct wpa_driver_nl80211_data *drv = bss->drv;
8047         struct rtnl_neigh *rn;
8048         struct nl_addr *nl_ipaddr;
8049         int family, addrsize;
8050         int res;
8051
8052         if (!ipaddr)
8053                 return -EINVAL;
8054
8055         if (version == 4) {
8056                 family = AF_INET;
8057                 addrsize = 4;
8058         } else if (version == 6) {
8059                 family = AF_INET6;
8060                 addrsize = 16;
8061         } else {
8062                 return -EINVAL;
8063         }
8064
8065         if (bss->br_ifindex == 0) {
8066                 wpa_printf(MSG_DEBUG,
8067                            "nl80211: bridge must be set to delete an ip neigh");
8068                 return -1;
8069         }
8070
8071         if (!drv->rtnl_sk) {
8072                 wpa_printf(MSG_DEBUG,
8073                            "nl80211: nl_sock for NETLINK_ROUTE is not initialized");
8074                 return -1;
8075         }
8076
8077         rn = rtnl_neigh_alloc();
8078         if (rn == NULL)
8079                 return -ENOMEM;
8080
8081         /* set the destination ip address for neigh */
8082         nl_ipaddr = nl_addr_build(family, (void *) ipaddr, addrsize);
8083         if (nl_ipaddr == NULL) {
8084                 wpa_printf(MSG_DEBUG, "nl80211: nl_ipaddr build failed");
8085                 res = -ENOMEM;
8086                 goto errout;
8087         }
8088         res = rtnl_neigh_set_dst(rn, nl_ipaddr);
8089         if (res) {
8090                 wpa_printf(MSG_DEBUG,
8091                            "nl80211: neigh set destination addr failed");
8092                 goto errout;
8093         }
8094
8095         rtnl_neigh_set_ifindex(rn, bss->br_ifindex);
8096
8097         res = rtnl_neigh_delete(drv->rtnl_sk, rn, 0);
8098         if (res) {
8099                 wpa_printf(MSG_DEBUG,
8100                            "nl80211: Deleting bridge ip neigh failed: %s",
8101                            strerror(errno));
8102         }
8103 errout:
8104         if (nl_ipaddr)
8105                 nl_addr_put(nl_ipaddr);
8106         if (rn)
8107                 rtnl_neigh_put(rn);
8108         return res;
8109 #else /* CONFIG_LIBNL3_ROUTE */
8110         return -1;
8111 #endif /* CONFIG_LIBNL3_ROUTE */
8112 }
8113
8114
8115 static int linux_write_system_file(const char *path, unsigned int val)
8116 {
8117         char buf[50];
8118         int fd, len;
8119
8120         len = os_snprintf(buf, sizeof(buf), "%u\n", val);
8121         if (os_snprintf_error(sizeof(buf), len))
8122                 return -1;
8123
8124         fd = open(path, O_WRONLY);
8125         if (fd < 0)
8126                 return -1;
8127
8128         if (write(fd, buf, len) < 0) {
8129                 wpa_printf(MSG_DEBUG,
8130                            "nl80211: Failed to write Linux system file: %s with the value of %d",
8131                            path, val);
8132                 close(fd);
8133                 return -1;
8134         }
8135         close(fd);
8136
8137         return 0;
8138 }
8139
8140
8141 static const char * drv_br_port_attr_str(enum drv_br_port_attr attr)
8142 {
8143         switch (attr) {
8144         case DRV_BR_PORT_ATTR_PROXYARP:
8145                 return "proxyarp";
8146         case DRV_BR_PORT_ATTR_HAIRPIN_MODE:
8147                 return "hairpin_mode";
8148         }
8149
8150         return NULL;
8151 }
8152
8153
8154 static int wpa_driver_br_port_set_attr(void *priv, enum drv_br_port_attr attr,
8155                                        unsigned int val)
8156 {
8157         struct i802_bss *bss = priv;
8158         char path[128];
8159         const char *attr_txt;
8160
8161         attr_txt = drv_br_port_attr_str(attr);
8162         if (attr_txt == NULL)
8163                 return -EINVAL;
8164
8165         os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/%s",
8166                     bss->ifname, attr_txt);
8167
8168         if (linux_write_system_file(path, val))
8169                 return -1;
8170
8171         return 0;
8172 }
8173
8174
8175 static const char * drv_br_net_param_str(enum drv_br_net_param param)
8176 {
8177         switch (param) {
8178         case DRV_BR_NET_PARAM_GARP_ACCEPT:
8179                 return "arp_accept";
8180         }
8181
8182         return NULL;
8183 }
8184
8185
8186 static int wpa_driver_br_set_net_param(void *priv, enum drv_br_net_param param,
8187                                        unsigned int val)
8188 {
8189         struct i802_bss *bss = priv;
8190         char path[128];
8191         const char *param_txt;
8192         int ip_version = 4;
8193
8194         param_txt = drv_br_net_param_str(param);
8195         if (param_txt == NULL)
8196                 return -EINVAL;
8197
8198         switch (param) {
8199                 case DRV_BR_NET_PARAM_GARP_ACCEPT:
8200                         ip_version = 4;
8201                         break;
8202                 default:
8203                         return -EINVAL;
8204         }
8205
8206         os_snprintf(path, sizeof(path), "/proc/sys/net/ipv%d/conf/%s/%s",
8207                     ip_version, bss->brname, param_txt);
8208
8209         if (linux_write_system_file(path, val))
8210                 return -1;
8211
8212         return 0;
8213 }
8214
8215
8216 static int hw_mode_to_qca_acs(enum hostapd_hw_mode hw_mode)
8217 {
8218         switch (hw_mode) {
8219         case HOSTAPD_MODE_IEEE80211B:
8220                 return QCA_ACS_MODE_IEEE80211B;
8221         case HOSTAPD_MODE_IEEE80211G:
8222                 return QCA_ACS_MODE_IEEE80211G;
8223         case HOSTAPD_MODE_IEEE80211A:
8224                 return QCA_ACS_MODE_IEEE80211A;
8225         case HOSTAPD_MODE_IEEE80211AD:
8226                 return QCA_ACS_MODE_IEEE80211AD;
8227         default:
8228                 return -1;
8229         }
8230 }
8231
8232
8233 static int wpa_driver_do_acs(void *priv, struct drv_acs_params *params)
8234 {
8235         struct i802_bss *bss = priv;
8236         struct wpa_driver_nl80211_data *drv = bss->drv;
8237         struct nl_msg *msg;
8238         struct nlattr *data;
8239         int ret;
8240         int mode;
8241
8242         mode = hw_mode_to_qca_acs(params->hw_mode);
8243         if (mode < 0)
8244                 return -1;
8245
8246         if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
8247             nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
8248             nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
8249                         QCA_NL80211_VENDOR_SUBCMD_DO_ACS) ||
8250             !(data = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA)) ||
8251             nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_ACS_HW_MODE, mode) ||
8252             (params->ht_enabled &&
8253              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT_ENABLED)) ||
8254             (params->ht40_enabled &&
8255              nla_put_flag(msg, QCA_WLAN_VENDOR_ATTR_ACS_HT40_ENABLED))) {
8256                 nlmsg_free(msg);
8257                 return -ENOBUFS;
8258         }
8259         nla_nest_end(msg, data);
8260
8261         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8262         if (ret) {
8263                 wpa_printf(MSG_DEBUG,
8264                            "nl80211: Failed to invoke driver ACS function: %s",
8265                            strerror(errno));
8266         }
8267         return ret;
8268 }
8269
8270
8271 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8272         .name = "nl80211",
8273         .desc = "Linux nl80211/cfg80211",
8274         .get_bssid = wpa_driver_nl80211_get_bssid,
8275         .get_ssid = wpa_driver_nl80211_get_ssid,
8276         .set_key = driver_nl80211_set_key,
8277         .scan2 = driver_nl80211_scan2,
8278         .sched_scan = wpa_driver_nl80211_sched_scan,
8279         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8280         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8281         .deauthenticate = driver_nl80211_deauthenticate,
8282         .authenticate = driver_nl80211_authenticate,
8283         .associate = wpa_driver_nl80211_associate,
8284         .global_init = nl80211_global_init,
8285         .global_deinit = nl80211_global_deinit,
8286         .init2 = wpa_driver_nl80211_init,
8287         .deinit = driver_nl80211_deinit,
8288         .get_capa = wpa_driver_nl80211_get_capa,
8289         .set_operstate = wpa_driver_nl80211_set_operstate,
8290         .set_supp_port = wpa_driver_nl80211_set_supp_port,
8291         .set_country = wpa_driver_nl80211_set_country,
8292         .get_country = wpa_driver_nl80211_get_country,
8293         .set_ap = wpa_driver_nl80211_set_ap,
8294         .set_acl = wpa_driver_nl80211_set_acl,
8295         .if_add = wpa_driver_nl80211_if_add,
8296         .if_remove = driver_nl80211_if_remove,
8297         .send_mlme = driver_nl80211_send_mlme,
8298         .get_hw_feature_data = nl80211_get_hw_feature_data,
8299         .sta_add = wpa_driver_nl80211_sta_add,
8300         .sta_remove = driver_nl80211_sta_remove,
8301         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8302         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8303         .hapd_init = i802_init,
8304         .hapd_deinit = i802_deinit,
8305         .set_wds_sta = i802_set_wds_sta,
8306         .get_seqnum = i802_get_seqnum,
8307         .flush = i802_flush,
8308         .get_inact_sec = i802_get_inact_sec,
8309         .sta_clear_stats = i802_sta_clear_stats,
8310         .set_rts = i802_set_rts,
8311         .set_frag = i802_set_frag,
8312         .set_tx_queue_params = i802_set_tx_queue_params,
8313         .set_sta_vlan = driver_nl80211_set_sta_vlan,
8314         .sta_deauth = i802_sta_deauth,
8315         .sta_disassoc = i802_sta_disassoc,
8316         .read_sta_data = driver_nl80211_read_sta_data,
8317         .set_freq = i802_set_freq,
8318         .send_action = driver_nl80211_send_action,
8319         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
8320         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
8321         .cancel_remain_on_channel =
8322         wpa_driver_nl80211_cancel_remain_on_channel,
8323         .probe_req_report = driver_nl80211_probe_req_report,
8324         .deinit_ap = wpa_driver_nl80211_deinit_ap,
8325         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
8326         .resume = wpa_driver_nl80211_resume,
8327         .signal_monitor = nl80211_signal_monitor,
8328         .signal_poll = nl80211_signal_poll,
8329         .send_frame = nl80211_send_frame,
8330         .shared_freq = wpa_driver_nl80211_shared_freq,
8331         .set_param = nl80211_set_param,
8332         .get_radio_name = nl80211_get_radio_name,
8333         .add_pmkid = nl80211_add_pmkid,
8334         .remove_pmkid = nl80211_remove_pmkid,
8335         .flush_pmkid = nl80211_flush_pmkid,
8336         .set_rekey_info = nl80211_set_rekey_info,
8337         .poll_client = nl80211_poll_client,
8338         .set_p2p_powersave = nl80211_set_p2p_powersave,
8339         .start_dfs_cac = nl80211_start_radar_detection,
8340         .stop_ap = wpa_driver_nl80211_stop_ap,
8341 #ifdef CONFIG_TDLS
8342         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
8343         .tdls_oper = nl80211_tdls_oper,
8344         .tdls_enable_channel_switch = nl80211_tdls_enable_channel_switch,
8345         .tdls_disable_channel_switch = nl80211_tdls_disable_channel_switch,
8346 #endif /* CONFIG_TDLS */
8347         .update_ft_ies = wpa_driver_nl80211_update_ft_ies,
8348         .get_mac_addr = wpa_driver_nl80211_get_macaddr,
8349         .get_survey = wpa_driver_nl80211_get_survey,
8350         .status = wpa_driver_nl80211_status,
8351         .switch_channel = nl80211_switch_channel,
8352 #ifdef ANDROID_P2P
8353         .set_noa = wpa_driver_set_p2p_noa,
8354         .get_noa = wpa_driver_get_p2p_noa,
8355         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
8356 #endif /* ANDROID_P2P */
8357 #ifdef ANDROID
8358         .driver_cmd = wpa_driver_nl80211_driver_cmd,
8359 #endif /* ANDROID */
8360         .vendor_cmd = nl80211_vendor_cmd,
8361         .set_qos_map = nl80211_set_qos_map,
8362         .set_wowlan = nl80211_set_wowlan,
8363         .roaming = nl80211_roaming,
8364         .set_mac_addr = nl80211_set_mac_addr,
8365 #ifdef CONFIG_MESH
8366         .init_mesh = wpa_driver_nl80211_init_mesh,
8367         .join_mesh = wpa_driver_nl80211_join_mesh,
8368         .leave_mesh = wpa_driver_nl80211_leave_mesh,
8369 #endif /* CONFIG_MESH */
8370         .br_add_ip_neigh = wpa_driver_br_add_ip_neigh,
8371         .br_delete_ip_neigh = wpa_driver_br_delete_ip_neigh,
8372         .br_port_set_attr = wpa_driver_br_port_set_attr,
8373         .br_set_net_param = wpa_driver_br_set_net_param,
8374         .add_tx_ts = nl80211_add_ts,
8375         .del_tx_ts = nl80211_del_ts,
8376         .do_acs = wpa_driver_do_acs,
8377 };