src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2010, 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 program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * Alternatively, this software may be distributed under the terms of BSD
  14  * license.
  15  *
  16  * See README and COPYING for more details.
  17  */
  18
  19 #include "includes.h"
  20 #include <sys/ioctl.h>
  21 #include <net/if.h>
  22 #include <netlink/genl/genl.h>
  23 #include <netlink/genl/family.h>
  24 #include <netlink/genl/ctrl.h>
  25 #include <netpacket/packet.h>
  26 #include <linux/filter.h>
  27 #include "nl80211_copy.h"
  28
  29 #include "common.h"
  30 #include "eloop.h"
  31 #include "common/ieee802_11_defs.h"
  32 #include "netlink.h"
  33 #include "linux_ioctl.h"
  34 #include "radiotap.h"
  35 #include "radiotap_iter.h"
  36 #include "driver.h"
  37
  38 #ifdef CONFIG_LIBNL20
  39 /* libnl 2.0 compatibility code */
  40 #define nl_handle nl_sock
  41 #define nl_handle_alloc_cb nl_socket_alloc_cb
  42 #define nl_handle_destroy nl_socket_free
  43 #endif /* CONFIG_LIBNL20 */
  44
  45
  46 #ifndef IFF_LOWER_UP
  47 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
  48 #endif
  49 #ifndef IFF_DORMANT
  50 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
  51 #endif
  52
  53 #ifndef IF_OPER_DORMANT
  54 #define IF_OPER_DORMANT 5
  55 #endif
  56 #ifndef IF_OPER_UP
  57 #define IF_OPER_UP 6
  58 #endif
  59
  60 struct i802_bss {
  61         struct wpa_driver_nl80211_data *drv;
  62         struct i802_bss *next;
  63         int ifindex;
  64         char ifname[IFNAMSIZ + 1];
  65         unsigned int beacon_set:1;
  66 };
  67
  68 struct wpa_driver_nl80211_data {
  69         void *ctx;
  70         struct netlink_data *netlink;
  71         int ioctl_sock; /* socket for ioctl() use */
  72         char brname[IFNAMSIZ];
  73         int ifindex;
  74         int if_removed;
  75         struct wpa_driver_capa capa;
  76         int has_capability;
  77
  78         int operstate;
  79
  80         int scan_complete_events;
  81
  82         struct nl_handle *nl_handle;
  83         struct nl_handle *nl_handle_event;
  84         struct nl_cache *nl_cache;
  85         struct nl_cache *nl_cache_event;
  86         struct nl_cb *nl_cb;
  87         struct genl_family *nl80211;
  88
  89         u8 auth_bssid[ETH_ALEN];
  90         u8 bssid[ETH_ALEN];
  91         int associated;
  92         u8 ssid[32];
  93         size_t ssid_len;
  94         int nlmode;
  95         int ap_scan_as_station;
  96         unsigned int assoc_freq;
  97
  98         int monitor_sock;
  99         int monitor_ifidx;
 100         int probe_req_report;
 101         int disable_11b_rates;
 102
 103         unsigned int pending_remain_on_chan:1;
 104         unsigned int pending_send_action:1;
 105         unsigned int added_bridge:1;
 106         unsigned int added_if_into_bridge:1;
 107
 108         u64 remain_on_chan_cookie;
 109         u64 send_action_cookie;
 110
 111         struct wpa_driver_scan_filter *filter_ssids;
 112         size_t num_filter_ssids;
 113
 114         struct i802_bss first_bss;
 115
 116 #ifdef HOSTAPD
 117         int eapol_sock; /* socket for EAPOL frames */
 118
 119         int default_if_indices[16];
 120         int *if_indices;
 121         int num_if_indices;
 122
 123         int last_freq;
 124         int last_freq_ht;
 125 #endif /* HOSTAPD */
 126 };
 127
 128
 129 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 130                                             void *timeout_ctx);
 131 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
 132 static int
 133 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 134 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 135                                    const u8 *addr, int cmd, u16 reason_code);
 136 static void nl80211_remove_monitor_interface(
 137         struct wpa_driver_nl80211_data *drv);
 138
 139 #ifdef HOSTAPD
 140 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 141 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 142 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 143 static int wpa_driver_nl80211_if_remove(void *priv,
 144                                         enum wpa_driver_if_type type,
 145                                         const char *ifname);
 146 #endif /* HOSTAPD */
 147
 148 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
 149                                                         void *timeout_ctx);
 150 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 151                                      int ifindex, int disabled);
 152
 153
 154 /* nl80211 code */
 155 static int ack_handler(struct nl_msg *msg, void *arg)
 156 {
 157         int *err = arg;
 158         *err = 0;
 159         return NL_STOP;
 160 }
 161
 162 static int finish_handler(struct nl_msg *msg, void *arg)
 163 {
 164         int *ret = arg;
 165         *ret = 0;
 166         return NL_SKIP;
 167 }
 168
 169 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 170                          void *arg)
 171 {
 172         int *ret = arg;
 173         *ret = err->error;
 174         return NL_SKIP;
 175 }
 176
 177
 178 static int no_seq_check(struct nl_msg *msg, void *arg)
 179 {
 180         return NL_OK;
 181 }
 182
 183
 184 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
 185                          struct nl_handle *nl_handle, struct nl_msg *msg,
 186                          int (*valid_handler)(struct nl_msg *, void *),
 187                          void *valid_data)
 188 {
 189         struct nl_cb *cb;
 190         int err = -ENOMEM;
 191
 192         cb = nl_cb_clone(drv->nl_cb);
 193         if (!cb)
 194                 goto out;
 195
 196         err = nl_send_auto_complete(nl_handle, msg);
 197         if (err < 0)
 198                 goto out;
 199
 200         err = 1;
 201
 202         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 203         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 204         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 205
 206         if (valid_handler)
 207                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 208                           valid_handler, valid_data);
 209
 210         while (err > 0)
 211                 nl_recvmsgs(nl_handle, cb);
 212  out:
 213         nl_cb_put(cb);
 214         nlmsg_free(msg);
 215         return err;
 216 }
 217
 218
 219 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 220                               struct nl_msg *msg,
 221                               int (*valid_handler)(struct nl_msg *, void *),
 222                               void *valid_data)
 223 {
 224         return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
 225                              valid_data);
 226 }
 227
 228
 229 struct family_data {
 230         const char *group;
 231         int id;
 232 };
 233
 234
 235 static int family_handler(struct nl_msg *msg, void *arg)
 236 {
 237         struct family_data *res = arg;
 238         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 239         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 240         struct nlattr *mcgrp;
 241         int i;
 242
 243         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 244                   genlmsg_attrlen(gnlh, 0), NULL);
 245         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 246                 return NL_SKIP;
 247
 248         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 249                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 250                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 251                           nla_len(mcgrp), NULL);
 252                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 253                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 254                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 255                                res->group,
 256                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 257                         continue;
 258                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 259                 break;
 260         };
 261
 262         return NL_SKIP;
 263 }
 264
 265
 266 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 267                                const char *family, const char *group)
 268 {
 269         struct nl_msg *msg;
 270         int ret = -1;
 271         struct family_data res = { group, -ENOENT };
 272
 273         msg = nlmsg_alloc();
 274         if (!msg)
 275                 return -ENOMEM;
 276         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 277                     0, 0, CTRL_CMD_GETFAMILY, 0);
 278         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 279
 280         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 281         msg = NULL;
 282         if (ret == 0)
 283                 ret = res.id;
 284
 285 nla_put_failure:
 286         nlmsg_free(msg);
 287         return ret;
 288 }
 289
 290
 291 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 292 {
 293         struct i802_bss *bss = priv;
 294         struct wpa_driver_nl80211_data *drv = bss->drv;
 295         if (!drv->associated)
 296                 return -1;
 297         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 298         return 0;
 299 }
 300
 301
 302 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 303 {
 304         struct i802_bss *bss = priv;
 305         struct wpa_driver_nl80211_data *drv = bss->drv;
 306         if (!drv->associated)
 307                 return -1;
 308         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 309         return drv->ssid_len;
 310 }
 311
 312
 313 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 314                                           char *buf, size_t len, int del)
 315 {
 316         union wpa_event_data event;
 317
 318         os_memset(&event, 0, sizeof(event));
 319         if (len > sizeof(event.interface_status.ifname))
 320                 len = sizeof(event.interface_status.ifname) - 1;
 321         os_memcpy(event.interface_status.ifname, buf, len);
 322         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 323                 EVENT_INTERFACE_ADDED;
 324
 325         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 326                    del ? "DEL" : "NEW",
 327                    event.interface_status.ifname,
 328                    del ? "removed" : "added");
 329
 330         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 331                 if (del)
 332                         drv->if_removed = 1;
 333                 else
 334                         drv->if_removed = 0;
 335         }
 336
 337         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 338 }
 339
 340
 341 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 342                                          u8 *buf, size_t len)
 343 {
 344         int attrlen, rta_len;
 345         struct rtattr *attr;
 346
 347         attrlen = len;
 348         attr = (struct rtattr *) buf;
 349
 350         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 351         while (RTA_OK(attr, attrlen)) {
 352                 if (attr->rta_type == IFLA_IFNAME) {
 353                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 354                             == 0)
 355                                 return 1;
 356                         else
 357                                 break;
 358                 }
 359                 attr = RTA_NEXT(attr, attrlen);
 360         }
 361
 362         return 0;
 363 }
 364
 365
 366 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 367                                           int ifindex, u8 *buf, size_t len)
 368 {
 369         if (drv->ifindex == ifindex)
 370                 return 1;
 371
 372         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 373                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 374                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 375                            "interface");
 376                 wpa_driver_nl80211_finish_drv_init(drv);
 377                 return 1;
 378         }
 379
 380         return 0;
 381 }
 382
 383
 384 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 385                                                  struct ifinfomsg *ifi,
 386                                                  u8 *buf, size_t len)
 387 {
 388         struct wpa_driver_nl80211_data *drv = ctx;
 389         int attrlen, rta_len;
 390         struct rtattr *attr;
 391
 392         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
 393                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 394                            ifi->ifi_index);
 395                 return;
 396         }
 397
 398         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 399                    "(%s%s%s%s)",
 400                    drv->operstate, ifi->ifi_flags,
 401                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 402                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 403                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 404                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 405         /*
 406          * Some drivers send the association event before the operup event--in
 407          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 408          * fails. This will hit us when wpa_supplicant does not need to do
 409          * IEEE 802.1X authentication
 410          */
 411         if (drv->operstate == 1 &&
 412             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 413             !(ifi->ifi_flags & IFF_RUNNING))
 414                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 415                                        -1, IF_OPER_UP);
 416
 417         attrlen = len;
 418         attr = (struct rtattr *) buf;
 419         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 420         while (RTA_OK(attr, attrlen)) {
 421                 if (attr->rta_type == IFLA_IFNAME) {
 422                         wpa_driver_nl80211_event_link(
 423                                 drv,
 424                                 ((char *) attr) + rta_len,
 425                                 attr->rta_len - rta_len, 0);
 426                 }
 427                 attr = RTA_NEXT(attr, attrlen);
 428         }
 429 }
 430
 431
 432 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 433                                                  struct ifinfomsg *ifi,
 434                                                  u8 *buf, size_t len)
 435 {
 436         struct wpa_driver_nl80211_data *drv = ctx;
 437         int attrlen, rta_len;
 438         struct rtattr *attr;
 439
 440         attrlen = len;
 441         attr = (struct rtattr *) buf;
 442
 443         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 444         while (RTA_OK(attr, attrlen)) {
 445                 if (attr->rta_type == IFLA_IFNAME) {
 446                         wpa_driver_nl80211_event_link(
 447                                 drv,
 448                                 ((char *) attr) + rta_len,
 449                                 attr->rta_len - rta_len, 1);
 450                 }
 451                 attr = RTA_NEXT(attr, attrlen);
 452         }
 453 }
 454
 455
 456 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 457                             const u8 *frame, size_t len)
 458 {
 459         const struct ieee80211_mgmt *mgmt;
 460         union wpa_event_data event;
 461
 462         mgmt = (const struct ieee80211_mgmt *) frame;
 463         if (len < 24 + sizeof(mgmt->u.auth)) {
 464                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 465                            "frame");
 466                 return;
 467         }
 468
 469         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 470         os_memset(&event, 0, sizeof(event));
 471         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 472         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 473         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 474         if (len > 24 + sizeof(mgmt->u.auth)) {
 475                 event.auth.ies = mgmt->u.auth.variable;
 476                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 477         }
 478
 479         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 480 }
 481
 482
 483 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 484                             const u8 *frame, size_t len)
 485 {
 486         const struct ieee80211_mgmt *mgmt;
 487         union wpa_event_data event;
 488         u16 status;
 489
 490         mgmt = (const struct ieee80211_mgmt *) frame;
 491         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 492                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 493                            "frame");
 494                 return;
 495         }
 496
 497         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 498         if (status != WLAN_STATUS_SUCCESS) {
 499                 os_memset(&event, 0, sizeof(event));
 500                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 501                         event.assoc_reject.resp_ies =
 502                                 (u8 *) mgmt->u.assoc_resp.variable;
 503                         event.assoc_reject.resp_ies_len =
 504                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 505                 }
 506                 event.assoc_reject.status_code = status;
 507
 508                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 509                 return;
 510         }
 511
 512         drv->associated = 1;
 513         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 514
 515         os_memset(&event, 0, sizeof(event));
 516         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 517                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 518                 event.assoc_info.resp_ies_len =
 519                         len - 24 - sizeof(mgmt->u.assoc_resp);
 520         }
 521
 522         event.assoc_info.freq = drv->assoc_freq;
 523
 524         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 525 }
 526
 527
 528 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 529                                enum nl80211_commands cmd, struct nlattr *status,
 530                                struct nlattr *addr, struct nlattr *req_ie,
 531                                struct nlattr *resp_ie)
 532 {
 533         union wpa_event_data event;
 534
 535         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 536                 /*
 537                  * Avoid reporting two association events that would confuse
 538                  * the core code.
 539                  */
 540                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 541                            "when using userspace SME", cmd);
 542                 return;
 543         }
 544
 545         os_memset(&event, 0, sizeof(event));
 546         if (cmd == NL80211_CMD_CONNECT &&
 547             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 548                 if (resp_ie) {
 549                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 550                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 551                 }
 552                 event.assoc_reject.status_code = nla_get_u16(status);
 553                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 554                 return;
 555         }
 556
 557         drv->associated = 1;
 558         if (addr)
 559                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 560
 561         if (req_ie) {
 562                 event.assoc_info.req_ies = nla_data(req_ie);
 563                 event.assoc_info.req_ies_len = nla_len(req_ie);
 564         }
 565         if (resp_ie) {
 566                 event.assoc_info.resp_ies = nla_data(resp_ie);
 567                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 568         }
 569
 570         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 571 }
 572
 573
 574 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 575                                enum nl80211_commands cmd, struct nlattr *addr)
 576 {
 577         union wpa_event_data event;
 578         enum wpa_event_type ev;
 579
 580         if (nla_len(addr) != ETH_ALEN)
 581                 return;
 582
 583         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 584                    cmd, MAC2STR((u8 *) nla_data(addr)));
 585
 586         if (cmd == NL80211_CMD_AUTHENTICATE)
 587                 ev = EVENT_AUTH_TIMED_OUT;
 588         else if (cmd == NL80211_CMD_ASSOCIATE)
 589                 ev = EVENT_ASSOC_TIMED_OUT;
 590         else
 591                 return;
 592
 593         os_memset(&event, 0, sizeof(event));
 594         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 595         wpa_supplicant_event(drv->ctx, ev, &event);
 596 }
 597
 598
 599 static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
 600                               struct nlattr *freq, const u8 *frame, size_t len)
 601 {
 602         const struct ieee80211_mgmt *mgmt;
 603         union wpa_event_data event;
 604         u16 fc, stype;
 605
 606         mgmt = (const struct ieee80211_mgmt *) frame;
 607         if (len < 24) {
 608                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
 609                 return;
 610         }
 611
 612         fc = le_to_host16(mgmt->frame_control);
 613         stype = WLAN_FC_GET_STYPE(fc);
 614
 615         os_memset(&event, 0, sizeof(event));
 616         event.rx_action.da = mgmt->da;
 617         event.rx_action.sa = mgmt->sa;
 618         event.rx_action.bssid = mgmt->bssid;
 619         event.rx_action.category = mgmt->u.action.category;
 620         event.rx_action.data = &mgmt->u.action.category + 1;
 621         event.rx_action.len = frame + len - event.rx_action.data;
 622         if (freq)
 623                 event.rx_action.freq = nla_get_u32(freq);
 624         wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
 625 }
 626
 627
 628 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
 629                                         struct nlattr *cookie, const u8 *frame,
 630                                         size_t len, struct nlattr *ack)
 631 {
 632         union wpa_event_data event;
 633         const struct ieee80211_hdr *hdr;
 634         u16 fc;
 635         u64 cookie_val;
 636
 637         if (!cookie)
 638                 return;
 639
 640         cookie_val = nla_get_u64(cookie);
 641         wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
 642                    (long long unsigned int) cookie_val,
 643                    cookie_val == drv->send_action_cookie ?
 644                    " (match)" : " (unknown)");
 645         if (cookie_val != drv->send_action_cookie)
 646                 return;
 647
 648         hdr = (const struct ieee80211_hdr *) frame;
 649         fc = le_to_host16(hdr->frame_control);
 650
 651         os_memset(&event, 0, sizeof(event));
 652         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 653         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 654         event.tx_status.dst = hdr->addr1;
 655         event.tx_status.data = frame;
 656         event.tx_status.data_len = len;
 657         event.tx_status.ack = ack != NULL;
 658         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
 659 }
 660
 661
 662 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 663                        enum nl80211_commands cmd, struct nlattr *frame,
 664                        struct nlattr *addr, struct nlattr *timed_out,
 665                        struct nlattr *freq, struct nlattr *ack,
 666                        struct nlattr *cookie)
 667 {
 668         if (timed_out && addr) {
 669                 mlme_timeout_event(drv, cmd, addr);
 670                 return;
 671         }
 672
 673         if (frame == NULL) {
 674                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 675                            "data", cmd);
 676                 return;
 677         }
 678
 679         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 680         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 681                     nla_data(frame), nla_len(frame));
 682
 683         switch (cmd) {
 684         case NL80211_CMD_AUTHENTICATE:
 685                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 686                 break;
 687         case NL80211_CMD_ASSOCIATE:
 688                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 689                 break;
 690         case NL80211_CMD_DEAUTHENTICATE:
 691                 drv->associated = 0;
 692                 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
 693                 break;
 694         case NL80211_CMD_DISASSOCIATE:
 695                 drv->associated = 0;
 696                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 697                 break;
 698         case NL80211_CMD_ACTION:
 699                 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
 700                 break;
 701         case NL80211_CMD_ACTION_TX_STATUS:
 702                 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
 703                                             nla_len(frame), ack);
 704                 break;
 705         default:
 706                 break;
 707         }
 708 }
 709
 710
 711 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 712                                            struct nlattr *tb[])
 713 {
 714         union wpa_event_data data;
 715
 716         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 717         os_memset(&data, 0, sizeof(data));
 718         if (tb[NL80211_ATTR_MAC]) {
 719                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 720                             nla_data(tb[NL80211_ATTR_MAC]),
 721                             nla_len(tb[NL80211_ATTR_MAC]));
 722                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 723         }
 724         if (tb[NL80211_ATTR_KEY_SEQ]) {
 725                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 726                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 727                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 728         }
 729         if (tb[NL80211_ATTR_KEY_TYPE]) {
 730                 enum nl80211_key_type key_type =
 731                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 732                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 733                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 734                         data.michael_mic_failure.unicast = 1;
 735         } else
 736                 data.michael_mic_failure.unicast = 1;
 737
 738         if (tb[NL80211_ATTR_KEY_IDX]) {
 739                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 740                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 741         }
 742
 743         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 744 }
 745
 746
 747 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 748                                  struct nlattr *tb[])
 749 {
 750         if (tb[NL80211_ATTR_MAC] == NULL) {
 751                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 752                            "event");
 753                 return;
 754         }
 755         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 756         drv->associated = 1;
 757         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 758                    MAC2STR(drv->bssid));
 759
 760         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 761 }
 762
 763
 764 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 765                                          int cancel_event, struct nlattr *tb[])
 766 {
 767         unsigned int freq, chan_type, duration;
 768         union wpa_event_data data;
 769         u64 cookie;
 770
 771         if (tb[NL80211_ATTR_WIPHY_FREQ])
 772                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 773         else
 774                 freq = 0;
 775
 776         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 777                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 778         else
 779                 chan_type = 0;
 780
 781         if (tb[NL80211_ATTR_DURATION])
 782                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 783         else
 784                 duration = 0;
 785
 786         if (tb[NL80211_ATTR_COOKIE])
 787                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 788         else
 789                 cookie = 0;
 790
 791         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 792                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 793                    cancel_event, freq, chan_type, duration,
 794                    (long long unsigned int) cookie,
 795                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 796
 797         if (cookie != drv->remain_on_chan_cookie)
 798                 return; /* not for us */
 799
 800         drv->pending_remain_on_chan = !cancel_event;
 801
 802         os_memset(&data, 0, sizeof(data));
 803         data.remain_on_channel.freq = freq;
 804         data.remain_on_channel.duration = duration;
 805         wpa_supplicant_event(drv->ctx, cancel_event ?
 806                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 807                              EVENT_REMAIN_ON_CHANNEL, &data);
 808 }
 809
 810
 811 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 812                             struct nlattr *tb[])
 813 {
 814         union wpa_event_data event;
 815         struct nlattr *nl;
 816         int rem;
 817         struct scan_info *info;
 818 #define MAX_REPORT_FREQS 50
 819         int freqs[MAX_REPORT_FREQS];
 820         int num_freqs = 0;
 821
 822         os_memset(&event, 0, sizeof(event));
 823         info = &event.scan_info;
 824         info->aborted = aborted;
 825
 826         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 827                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 828                         struct wpa_driver_scan_ssid *s =
 829                                 &info->ssids[info->num_ssids];
 830                         s->ssid = nla_data(nl);
 831                         s->ssid_len = nla_len(nl);
 832                         info->num_ssids++;
 833                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 834                                 break;
 835                 }
 836         }
 837         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
 838                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
 839                 {
 840                         freqs[num_freqs] = nla_get_u32(nl);
 841                         num_freqs++;
 842                         if (num_freqs == MAX_REPORT_FREQS - 1)
 843                                 break;
 844                 }
 845                 info->freqs = freqs;
 846                 info->num_freqs = num_freqs;
 847         }
 848         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
 849 }
 850
 851
 852 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
 853                               struct nlattr *tb[])
 854 {
 855         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
 856                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
 857                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
 858                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
 859         };
 860         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
 861         enum nl80211_cqm_rssi_threshold_event event;
 862
 863         if (tb[NL80211_ATTR_CQM] == NULL ||
 864             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
 865                              cqm_policy)) {
 866                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
 867                 return;
 868         }
 869
 870         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
 871                 return;
 872         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
 873         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
 874                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
 875                            "event: RSSI high");
 876         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
 877                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
 878                            "event: RSSI low");
 879         }
 880 }
 881
 882
 883 static int process_event(struct nl_msg *msg, void *arg)
 884 {
 885         struct wpa_driver_nl80211_data *drv = arg;
 886         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 887         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 888
 889         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 890                   genlmsg_attrlen(gnlh, 0), NULL);
 891
 892         if (tb[NL80211_ATTR_IFINDEX]) {
 893                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 894                 if (ifindex != drv->ifindex) {
 895                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
 896                                    " for foreign interface (ifindex %d)",
 897                                    gnlh->cmd, ifindex);
 898                         return NL_SKIP;
 899                 }
 900         }
 901
 902         if (drv->ap_scan_as_station &&
 903             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
 904              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
 905                 wpa_driver_nl80211_set_mode(&drv->first_bss,
 906                                             IEEE80211_MODE_AP);
 907                 drv->ap_scan_as_station = 0;
 908         }
 909
 910         switch (gnlh->cmd) {
 911         case NL80211_CMD_TRIGGER_SCAN:
 912                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
 913                 break;
 914         case NL80211_CMD_NEW_SCAN_RESULTS:
 915                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
 916                 drv->scan_complete_events = 1;
 917                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 918                                      drv->ctx);
 919                 send_scan_event(drv, 0, tb);
 920                 break;
 921         case NL80211_CMD_SCAN_ABORTED:
 922                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
 923                 /*
 924                  * Need to indicate that scan results are available in order
 925                  * not to make wpa_supplicant stop its scanning.
 926                  */
 927                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 928                                      drv->ctx);
 929                 send_scan_event(drv, 1, tb);
 930                 break;
 931         case NL80211_CMD_AUTHENTICATE:
 932         case NL80211_CMD_ASSOCIATE:
 933         case NL80211_CMD_DEAUTHENTICATE:
 934         case NL80211_CMD_DISASSOCIATE:
 935         case NL80211_CMD_ACTION:
 936         case NL80211_CMD_ACTION_TX_STATUS:
 937                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
 938                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
 939                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
 940                            tb[NL80211_ATTR_COOKIE]);
 941                 break;
 942         case NL80211_CMD_CONNECT:
 943         case NL80211_CMD_ROAM:
 944                 mlme_event_connect(drv, gnlh->cmd,
 945                                    tb[NL80211_ATTR_STATUS_CODE],
 946                                    tb[NL80211_ATTR_MAC],
 947                                    tb[NL80211_ATTR_REQ_IE],
 948                                    tb[NL80211_ATTR_RESP_IE]);
 949                 break;
 950         case NL80211_CMD_DISCONNECT:
 951                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 952                         /*
 953                          * Avoid reporting two disassociation events that could
 954                          * confuse the core code.
 955                          */
 956                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
 957                                    "event when using userspace SME");
 958                         break;
 959                 }
 960                 drv->associated = 0;
 961                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 962                 break;
 963         case NL80211_CMD_MICHAEL_MIC_FAILURE:
 964                 mlme_event_michael_mic_failure(drv, tb);
 965                 break;
 966         case NL80211_CMD_JOIN_IBSS:
 967                 mlme_event_join_ibss(drv, tb);
 968                 break;
 969         case NL80211_CMD_REMAIN_ON_CHANNEL:
 970                 mlme_event_remain_on_channel(drv, 0, tb);
 971                 break;
 972         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
 973                 mlme_event_remain_on_channel(drv, 1, tb);
 974                 break;
 975         case NL80211_CMD_NOTIFY_CQM:
 976                 nl80211_cqm_event(drv, tb);
 977                 break;
 978         default:
 979                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
 980                            "(cmd=%d)", gnlh->cmd);
 981                 break;
 982         }
 983
 984         return NL_SKIP;
 985 }
 986
 987
 988 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
 989                                              void *sock_ctx)
 990 {
 991         struct nl_cb *cb;
 992         struct wpa_driver_nl80211_data *drv = eloop_ctx;
 993
 994         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
 995
 996         cb = nl_cb_clone(drv->nl_cb);
 997         if (!cb)
 998                 return;
 999         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1000         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1001         nl_recvmsgs(drv->nl_handle_event, cb);
1002         nl_cb_put(cb);
1003 }
1004
1005
1006 /**
1007  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1008  * @priv: driver_nl80211 private data
1009  * @alpha2_arg: country to which to switch to
1010  * Returns: 0 on success, -1 on failure
1011  *
1012  * This asks nl80211 to set the regulatory domain for given
1013  * country ISO / IEC alpha2.
1014  */
1015 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1016 {
1017         struct i802_bss *bss = priv;
1018         struct wpa_driver_nl80211_data *drv = bss->drv;
1019         char alpha2[3];
1020         struct nl_msg *msg;
1021
1022         msg = nlmsg_alloc();
1023         if (!msg)
1024                 return -ENOMEM;
1025
1026         alpha2[0] = alpha2_arg[0];
1027         alpha2[1] = alpha2_arg[1];
1028         alpha2[2] = '\0';
1029
1030         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1031                     0, NL80211_CMD_REQ_SET_REG, 0);
1032
1033         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1034         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1035                 return -EINVAL;
1036         return 0;
1037 nla_put_failure:
1038         return -EINVAL;
1039 }
1040
1041
1042 #ifndef HOSTAPD
1043 struct wiphy_info_data {
1044         int max_scan_ssids;
1045         int ap_supported;
1046         int auth_supported;
1047         int connect_supported;
1048 };
1049
1050
1051 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1052 {
1053         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1054         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1055         struct wiphy_info_data *info = arg;
1056
1057         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1058                   genlmsg_attrlen(gnlh, 0), NULL);
1059
1060         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1061                 info->max_scan_ssids =
1062                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1063
1064         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1065                 struct nlattr *nl_mode;
1066                 int i;
1067                 nla_for_each_nested(nl_mode,
1068                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1069                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1070                                 info->ap_supported = 1;
1071                                 break;
1072                         }
1073                 }
1074         }
1075
1076         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1077                 struct nlattr *nl_cmd;
1078                 int i;
1079
1080                 nla_for_each_nested(nl_cmd,
1081                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1082                         u32 cmd = nla_get_u32(nl_cmd);
1083                         if (cmd == NL80211_CMD_AUTHENTICATE)
1084                                 info->auth_supported = 1;
1085                         else if (cmd == NL80211_CMD_CONNECT)
1086                                 info->connect_supported = 1;
1087                 }
1088         }
1089
1090         return NL_SKIP;
1091 }
1092
1093
1094 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1095                                        struct wiphy_info_data *info)
1096 {
1097         struct nl_msg *msg;
1098
1099         os_memset(info, 0, sizeof(*info));
1100         msg = nlmsg_alloc();
1101         if (!msg)
1102                 return -1;
1103
1104         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1105                     0, NL80211_CMD_GET_WIPHY, 0);
1106
1107         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1108
1109         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1110                 return 0;
1111         msg = NULL;
1112 nla_put_failure:
1113         nlmsg_free(msg);
1114         return -1;
1115 }
1116
1117
1118 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1119 {
1120         struct wiphy_info_data info;
1121         if (wpa_driver_nl80211_get_info(drv, &info))
1122                 return -1;
1123         drv->has_capability = 1;
1124         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1125         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1126                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1127                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1128                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1129         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1130                 WPA_DRIVER_CAPA_ENC_WEP104 |
1131                 WPA_DRIVER_CAPA_ENC_TKIP |
1132                 WPA_DRIVER_CAPA_ENC_CCMP;
1133         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1134                 WPA_DRIVER_AUTH_SHARED |
1135                 WPA_DRIVER_AUTH_LEAP;
1136
1137         drv->capa.max_scan_ssids = info.max_scan_ssids;
1138         if (info.ap_supported)
1139                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1140
1141         if (info.auth_supported)
1142                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1143         else if (!info.connect_supported) {
1144                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1145                            "authentication/association or connect commands");
1146                 return -1;
1147         }
1148
1149         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1150
1151         return 0;
1152 }
1153 #endif /* HOSTAPD */
1154
1155
1156 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1157                                       void *ctx)
1158 {
1159         int ret;
1160
1161         /* Initialize generic netlink and nl80211 */
1162
1163         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1164         if (drv->nl_cb == NULL) {
1165                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1166                            "callbacks");
1167                 goto err1;
1168         }
1169
1170         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1171         if (drv->nl_handle == NULL) {
1172                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1173                            "callbacks");
1174                 goto err2;
1175         }
1176
1177         drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1178         if (drv->nl_handle_event == NULL) {
1179                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1180                            "callbacks (event)");
1181                 goto err2b;
1182         }
1183
1184         if (genl_connect(drv->nl_handle)) {
1185                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1186                            "netlink");
1187                 goto err3;
1188         }
1189
1190         if (genl_connect(drv->nl_handle_event)) {
1191                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1192                            "netlink (event)");
1193                 goto err3;
1194         }
1195
1196 #ifdef CONFIG_LIBNL20
1197         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1198                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1199                            "netlink cache");
1200                 goto err3;
1201         }
1202         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1203             0) {
1204                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1205                            "netlink cache (event)");
1206                 goto err3b;
1207         }
1208 #else /* CONFIG_LIBNL20 */
1209         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1210         if (drv->nl_cache == NULL) {
1211                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1212                            "netlink cache");
1213                 goto err3;
1214         }
1215         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1216         if (drv->nl_cache_event == NULL) {
1217                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1218                            "netlink cache (event)");
1219                 goto err3b;
1220         }
1221 #endif /* CONFIG_LIBNL20 */
1222
1223         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1224         if (drv->nl80211 == NULL) {
1225                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1226                            "found");
1227                 goto err4;
1228         }
1229
1230         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1231         if (ret >= 0)
1232                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1233         if (ret < 0) {
1234                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1235                            "membership for scan events: %d (%s)",
1236                            ret, strerror(-ret));
1237                 goto err4;
1238         }
1239
1240         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1241         if (ret >= 0)
1242                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1243         if (ret < 0) {
1244                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1245                            "membership for mlme events: %d (%s)",
1246                            ret, strerror(-ret));
1247                 goto err4;
1248         }
1249
1250         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1251                                  wpa_driver_nl80211_event_receive, drv, ctx);
1252
1253         return 0;
1254
1255 err4:
1256         nl_cache_free(drv->nl_cache_event);
1257 err3b:
1258         nl_cache_free(drv->nl_cache);
1259 err3:
1260         nl_handle_destroy(drv->nl_handle_event);
1261 err2b:
1262         nl_handle_destroy(drv->nl_handle);
1263 err2:
1264         nl_cb_put(drv->nl_cb);
1265 err1:
1266         return -1;
1267 }
1268
1269
1270 /**
1271  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1272  * @ctx: context to be used when calling wpa_supplicant functions,
1273  * e.g., wpa_supplicant_event()
1274  * @ifname: interface name, e.g., wlan0
1275  * Returns: Pointer to private data, %NULL on failure
1276  */
1277 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1278 {
1279         struct wpa_driver_nl80211_data *drv;
1280         struct netlink_config *cfg;
1281         struct i802_bss *bss;
1282
1283         drv = os_zalloc(sizeof(*drv));
1284         if (drv == NULL)
1285                 return NULL;
1286         drv->ctx = ctx;
1287         bss = &drv->first_bss;
1288         bss->drv = drv;
1289         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1290         drv->monitor_ifidx = -1;
1291         drv->monitor_sock = -1;
1292         drv->ioctl_sock = -1;
1293
1294         if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1295                 os_free(drv);
1296                 return NULL;
1297         }
1298
1299         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1300         if (drv->ioctl_sock < 0) {
1301                 perror("socket(PF_INET,SOCK_DGRAM)");
1302                 goto failed;
1303         }
1304
1305         cfg = os_zalloc(sizeof(*cfg));
1306         if (cfg == NULL)
1307                 goto failed;
1308         cfg->ctx = drv;
1309         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1310         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1311         drv->netlink = netlink_init(cfg);
1312         if (drv->netlink == NULL) {
1313                 os_free(cfg);
1314                 goto failed;
1315         }
1316         if (wpa_driver_nl80211_finish_drv_init(drv))
1317                 goto failed;
1318
1319         return bss;
1320
1321 failed:
1322         netlink_deinit(drv->netlink);
1323         if (drv->ioctl_sock >= 0)
1324                 close(drv->ioctl_sock);
1325
1326         genl_family_put(drv->nl80211);
1327         nl_cache_free(drv->nl_cache);
1328         nl_handle_destroy(drv->nl_handle);
1329         nl_cb_put(drv->nl_cb);
1330         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1331
1332         os_free(drv);
1333         return NULL;
1334 }
1335
1336
1337 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1338                                          const u8 *match, size_t match_len)
1339 {
1340         struct nl_msg *msg;
1341         int ret = -1;
1342
1343         msg = nlmsg_alloc();
1344         if (!msg)
1345                 return -1;
1346
1347         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1348                     NL80211_CMD_REGISTER_ACTION, 0);
1349
1350         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1351         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1352
1353         ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1354         msg = NULL;
1355         if (ret) {
1356                 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1357                            "failed: ret=%d (%s)", ret, strerror(-ret));
1358                 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1359                             match, match_len);
1360                 goto nla_put_failure;
1361         }
1362         ret = 0;
1363 nla_put_failure:
1364         nlmsg_free(msg);
1365         return ret;
1366 }
1367
1368
1369 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1370 {
1371         if (0) {
1372                 /* Public Action frames */
1373                 return nl80211_register_action_frame(drv, (u8 *) "\x04", 1);
1374         }
1375
1376         /* FT Action frames */
1377         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1378                 return -1;
1379         else
1380                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1381                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1382
1383         return 0;
1384 }
1385
1386
1387 static int
1388 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1389 {
1390         struct i802_bss *bss = &drv->first_bss;
1391
1392         drv->ifindex = if_nametoindex(bss->ifname);
1393         drv->first_bss.ifindex = drv->ifindex;
1394
1395 #ifndef HOSTAPD
1396         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1397                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1398                            "use managed mode");
1399         }
1400
1401         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1402                 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
1403                            bss->ifname);
1404                 return -1;
1405         }
1406
1407         if (wpa_driver_nl80211_capa(drv))
1408                 return -1;
1409
1410         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1411                                1, IF_OPER_DORMANT);
1412 #endif /* HOSTAPD */
1413
1414         if (nl80211_register_action_frames(drv) < 0) {
1415                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1416                            "frame processing - ignore for now");
1417                 /*
1418                  * Older kernel versions did not support this, so ignore the
1419                  * error for now. Some functionality may not be available
1420                  * because of this.
1421                  */
1422         }
1423
1424         return 0;
1425 }
1426
1427
1428 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1429 {
1430         struct nl_msg *msg;
1431
1432         msg = nlmsg_alloc();
1433         if (!msg)
1434                 return -ENOMEM;
1435
1436         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1437                     0, NL80211_CMD_DEL_BEACON, 0);
1438         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1439
1440         return send_and_recv_msgs(drv, msg, NULL, NULL);
1441  nla_put_failure:
1442         return -ENOBUFS;
1443 }
1444
1445
1446 /**
1447  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1448  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1449  *
1450  * Shut down driver interface and processing of driver events. Free
1451  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1452  */
1453 static void wpa_driver_nl80211_deinit(void *priv)
1454 {
1455         struct i802_bss *bss = priv;
1456         struct wpa_driver_nl80211_data *drv = bss->drv;
1457
1458         if (drv->added_if_into_bridge) {
1459                 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1460                     < 0)
1461                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1462                                    "interface %s from bridge %s: %s",
1463                                    bss->ifname, drv->brname, strerror(errno));
1464         }
1465         if (drv->added_bridge) {
1466                 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1467                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1468                                    "bridge %s: %s",
1469                                    drv->brname, strerror(errno));
1470         }
1471
1472         nl80211_remove_monitor_interface(drv);
1473
1474         if (drv->nlmode == NL80211_IFTYPE_AP)
1475                 wpa_driver_nl80211_del_beacon(drv);
1476
1477 #ifdef HOSTAPD
1478         if (drv->last_freq_ht) {
1479                 /* Clear HT flags from the driver */
1480                 struct hostapd_freq_params freq;
1481                 os_memset(&freq, 0, sizeof(freq));
1482                 freq.freq = drv->last_freq;
1483                 i802_set_freq(priv, &freq);
1484         }
1485
1486         if (drv->eapol_sock >= 0) {
1487                 eloop_unregister_read_sock(drv->eapol_sock);
1488                 close(drv->eapol_sock);
1489         }
1490
1491         if (drv->if_indices != drv->default_if_indices)
1492                 os_free(drv->if_indices);
1493 #endif /* HOSTAPD */
1494
1495         if (drv->disable_11b_rates)
1496                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1497
1498         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1499         netlink_deinit(drv->netlink);
1500
1501         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1502
1503         (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1504         wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1505
1506         if (drv->ioctl_sock >= 0)
1507                 close(drv->ioctl_sock);
1508
1509         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1510         genl_family_put(drv->nl80211);
1511         nl_cache_free(drv->nl_cache);
1512         nl_cache_free(drv->nl_cache_event);
1513         nl_handle_destroy(drv->nl_handle);
1514         nl_handle_destroy(drv->nl_handle_event);
1515         nl_cb_put(drv->nl_cb);
1516
1517         eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1518                              drv, NULL);
1519
1520         os_free(drv->filter_ssids);
1521
1522         os_free(drv);
1523 }
1524
1525
1526 /**
1527  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1528  * @eloop_ctx: Driver private data
1529  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1530  *
1531  * This function can be used as registered timeout when starting a scan to
1532  * generate a scan completed event if the driver does not report this.
1533  */
1534 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1535 {
1536         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1537         if (drv->ap_scan_as_station) {
1538                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1539                                             IEEE80211_MODE_AP);
1540                 drv->ap_scan_as_station = 0;
1541         }
1542         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1543         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1544 }
1545
1546
1547 /**
1548  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1549  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1550  * @params: Scan parameters
1551  * Returns: 0 on success, -1 on failure
1552  */
1553 static int wpa_driver_nl80211_scan(void *priv,
1554                                    struct wpa_driver_scan_params *params)
1555 {
1556         struct i802_bss *bss = priv;
1557         struct wpa_driver_nl80211_data *drv = bss->drv;
1558         int ret = 0, timeout;
1559         struct nl_msg *msg, *ssids, *freqs;
1560         size_t i;
1561
1562         msg = nlmsg_alloc();
1563         ssids = nlmsg_alloc();
1564         freqs = nlmsg_alloc();
1565         if (!msg || !ssids || !freqs) {
1566                 nlmsg_free(msg);
1567                 nlmsg_free(ssids);
1568                 nlmsg_free(freqs);
1569                 return -1;
1570         }
1571
1572         os_free(drv->filter_ssids);
1573         drv->filter_ssids = params->filter_ssids;
1574         params->filter_ssids = NULL;
1575         drv->num_filter_ssids = params->num_filter_ssids;
1576
1577         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1578                     NL80211_CMD_TRIGGER_SCAN, 0);
1579
1580         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1581
1582         for (i = 0; i < params->num_ssids; i++) {
1583                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1584                                   params->ssids[i].ssid,
1585                                   params->ssids[i].ssid_len);
1586                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1587                         params->ssids[i].ssid);
1588         }
1589         if (params->num_ssids)
1590                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1591
1592         if (params->extra_ies) {
1593                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1594                                   params->extra_ies, params->extra_ies_len);
1595                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1596                         params->extra_ies);
1597         }
1598
1599         if (params->freqs) {
1600                 for (i = 0; params->freqs[i]; i++) {
1601                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1602                                    "MHz", params->freqs[i]);
1603                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1604                 }
1605                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1606         }
1607
1608         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1609         msg = NULL;
1610         if (ret) {
1611                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1612                            "(%s)", ret, strerror(-ret));
1613 #ifdef HOSTAPD
1614                 if (drv->nlmode == NL80211_IFTYPE_AP) {
1615                         /*
1616                          * mac80211 does not allow scan requests in AP mode, so
1617                          * try to do this in station mode.
1618                          */
1619                         if (wpa_driver_nl80211_set_mode(bss,
1620                                                         IEEE80211_MODE_INFRA))
1621                                 goto nla_put_failure;
1622
1623                         if (wpa_driver_nl80211_scan(drv, params)) {
1624                                 wpa_driver_nl80211_set_mode(bss,
1625                                                             IEEE80211_MODE_AP);
1626                                 goto nla_put_failure;
1627                         }
1628
1629                         /* Restore AP mode when processing scan results */
1630                         drv->ap_scan_as_station = 1;
1631                         ret = 0;
1632                 } else
1633                         goto nla_put_failure;
1634 #else /* HOSTAPD */
1635                 goto nla_put_failure;
1636 #endif /* HOSTAPD */
1637         }
1638
1639         /* Not all drivers generate "scan completed" wireless event, so try to
1640          * read results after a timeout. */
1641         timeout = 10;
1642         if (drv->scan_complete_events) {
1643                 /*
1644                  * The driver seems to deliver events to notify when scan is
1645                  * complete, so use longer timeout to avoid race conditions
1646                  * with scanning and following association request.
1647                  */
1648                 timeout = 30;
1649         }
1650         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1651                    "seconds", ret, timeout);
1652         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1653         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1654                                drv, drv->ctx);
1655
1656 nla_put_failure:
1657         nlmsg_free(ssids);
1658         nlmsg_free(msg);
1659         nlmsg_free(freqs);
1660         return ret;
1661 }
1662
1663
1664 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1665 {
1666         const u8 *end, *pos;
1667
1668         if (ies == NULL)
1669                 return NULL;
1670
1671         pos = ies;
1672         end = ies + ies_len;
1673
1674         while (pos + 1 < end) {
1675                 if (pos + 2 + pos[1] > end)
1676                         break;
1677                 if (pos[0] == ie)
1678                         return pos;
1679                 pos += 2 + pos[1];
1680         }
1681
1682         return NULL;
1683 }
1684
1685
1686 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1687                                  const u8 *ie, size_t ie_len)
1688 {
1689         const u8 *ssid;
1690         size_t i;
1691
1692         if (drv->filter_ssids == NULL)
1693                 return 0;
1694
1695         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1696         if (ssid == NULL)
1697                 return 1;
1698
1699         for (i = 0; i < drv->num_filter_ssids; i++) {
1700                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1701                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1702                     0)
1703                         return 0;
1704         }
1705
1706         return 1;
1707 }
1708
1709
1710 struct nl80211_bss_info_arg {
1711         struct wpa_driver_nl80211_data *drv;
1712         struct wpa_scan_results *res;
1713 };
1714
1715 static int bss_info_handler(struct nl_msg *msg, void *arg)
1716 {
1717         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1718         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1719         struct nlattr *bss[NL80211_BSS_MAX + 1];
1720         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1721                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1722                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1723                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1724                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1725                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1726                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1727                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1728                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1729                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1730                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1731                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1732         };
1733         struct nl80211_bss_info_arg *_arg = arg;
1734         struct wpa_scan_results *res = _arg->res;
1735         struct wpa_scan_res **tmp;
1736         struct wpa_scan_res *r;
1737         const u8 *ie, *beacon_ie;
1738         size_t ie_len, beacon_ie_len;
1739         u8 *pos;
1740
1741         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1742                   genlmsg_attrlen(gnlh, 0), NULL);
1743         if (!tb[NL80211_ATTR_BSS])
1744                 return NL_SKIP;
1745         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1746                              bss_policy))
1747                 return NL_SKIP;
1748         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1749                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1750                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1751         } else {
1752                 ie = NULL;
1753                 ie_len = 0;
1754         }
1755         if (bss[NL80211_BSS_BEACON_IES]) {
1756                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1757                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1758         } else {
1759                 beacon_ie = NULL;
1760                 beacon_ie_len = 0;
1761         }
1762
1763         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1764                                   ie ? ie_len : beacon_ie_len))
1765                 return NL_SKIP;
1766
1767         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1768         if (r == NULL)
1769                 return NL_SKIP;
1770         if (bss[NL80211_BSS_BSSID])
1771                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1772                           ETH_ALEN);
1773         if (bss[NL80211_BSS_FREQUENCY])
1774                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1775         if (bss[NL80211_BSS_BEACON_INTERVAL])
1776                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1777         if (bss[NL80211_BSS_CAPABILITY])
1778                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1779         r->flags |= WPA_SCAN_NOISE_INVALID;
1780         if (bss[NL80211_BSS_SIGNAL_MBM]) {
1781                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1782                 r->level /= 100; /* mBm to dBm */
1783                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1784         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1785                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1786                 r->flags |= WPA_SCAN_LEVEL_INVALID;
1787         } else
1788                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1789         if (bss[NL80211_BSS_TSF])
1790                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1791         if (bss[NL80211_BSS_SEEN_MS_AGO])
1792                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1793         r->ie_len = ie_len;
1794         pos = (u8 *) (r + 1);
1795         if (ie) {
1796                 os_memcpy(pos, ie, ie_len);
1797                 pos += ie_len;
1798         }
1799         r->beacon_ie_len = beacon_ie_len;
1800         if (beacon_ie)
1801                 os_memcpy(pos, beacon_ie, beacon_ie_len);
1802
1803         if (bss[NL80211_BSS_STATUS]) {
1804                 enum nl80211_bss_status status;
1805                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1806                 switch (status) {
1807                 case NL80211_BSS_STATUS_AUTHENTICATED:
1808                         r->flags |= WPA_SCAN_AUTHENTICATED;
1809                         break;
1810                 case NL80211_BSS_STATUS_ASSOCIATED:
1811                         r->flags |= WPA_SCAN_ASSOCIATED;
1812                         break;
1813                 default:
1814                         break;
1815                 }
1816         }
1817
1818         tmp = os_realloc(res->res,
1819                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1820         if (tmp == NULL) {
1821                 os_free(r);
1822                 return NL_SKIP;
1823         }
1824         tmp[res->num++] = r;
1825         res->res = tmp;
1826
1827         return NL_SKIP;
1828 }
1829
1830
1831 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1832                                  const u8 *addr)
1833 {
1834         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1835                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1836                            "mismatch (" MACSTR ")", MAC2STR(addr));
1837                 wpa_driver_nl80211_mlme(drv, addr,
1838                                         NL80211_CMD_DEAUTHENTICATE,
1839                                         WLAN_REASON_PREV_AUTH_NOT_VALID);
1840         }
1841 }
1842
1843
1844 static void wpa_driver_nl80211_check_bss_status(
1845         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1846 {
1847         size_t i;
1848
1849         for (i = 0; i < res->num; i++) {
1850                 struct wpa_scan_res *r = res->res[i];
1851                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1852                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1853                                    "indicates BSS status with " MACSTR
1854                                    " as authenticated",
1855                                    MAC2STR(r->bssid));
1856                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1857                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1858                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1859                             0) {
1860                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1861                                            " in local state (auth=" MACSTR
1862                                            " assoc=" MACSTR ")",
1863                                            MAC2STR(drv->auth_bssid),
1864                                            MAC2STR(drv->bssid));
1865                                 clear_state_mismatch(drv, r->bssid);
1866                         }
1867                 }
1868
1869                 if (r->flags & WPA_SCAN_ASSOCIATED) {
1870                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1871                                    "indicate BSS status with " MACSTR
1872                                    " as associated",
1873                                    MAC2STR(r->bssid));
1874                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1875                             !drv->associated) {
1876                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1877                                            "(not associated) does not match "
1878                                            "with BSS state");
1879                                 clear_state_mismatch(drv, r->bssid);
1880                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1881                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1882                                    0) {
1883                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1884                                            "(associated with " MACSTR ") does "
1885                                            "not match with BSS state",
1886                                            MAC2STR(drv->bssid));
1887                                 clear_state_mismatch(drv, r->bssid);
1888                                 clear_state_mismatch(drv, drv->bssid);
1889                         }
1890                 }
1891         }
1892 }
1893
1894
1895 static void wpa_scan_results_free(struct wpa_scan_results *res)
1896 {
1897         size_t i;
1898
1899         if (res == NULL)
1900                 return;
1901
1902         for (i = 0; i < res->num; i++)
1903                 os_free(res->res[i]);
1904         os_free(res->res);
1905         os_free(res);
1906 }
1907
1908
1909 static struct wpa_scan_results *
1910 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
1911 {
1912         struct nl_msg *msg;
1913         struct wpa_scan_results *res;
1914         int ret;
1915         struct nl80211_bss_info_arg arg;
1916
1917         res = os_zalloc(sizeof(*res));
1918         if (res == NULL)
1919                 return NULL;
1920         msg = nlmsg_alloc();
1921         if (!msg)
1922                 goto nla_put_failure;
1923
1924         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1925                     NL80211_CMD_GET_SCAN, 0);
1926         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1927
1928         arg.drv = drv;
1929         arg.res = res;
1930         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1931         msg = NULL;
1932         if (ret == 0) {
1933                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1934                            (unsigned long) res->num);
1935                 return res;
1936         }
1937         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1938                    "(%s)", ret, strerror(-ret));
1939 nla_put_failure:
1940         nlmsg_free(msg);
1941         wpa_scan_results_free(res);
1942         return NULL;
1943 }
1944
1945
1946 /**
1947  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1948  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1949  * Returns: Scan results on success, -1 on failure
1950  */
1951 static struct wpa_scan_results *
1952 wpa_driver_nl80211_get_scan_results(void *priv)
1953 {
1954         struct i802_bss *bss = priv;
1955         struct wpa_driver_nl80211_data *drv = bss->drv;
1956         struct wpa_scan_results *res;
1957
1958         res = nl80211_get_scan_results(drv);
1959         if (res)
1960                 wpa_driver_nl80211_check_bss_status(drv, res);
1961         return res;
1962 }
1963
1964
1965 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
1966 {
1967         struct wpa_scan_results *res;
1968         size_t i;
1969
1970         res = nl80211_get_scan_results(drv);
1971         if (res == NULL) {
1972                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
1973                 return;
1974         }
1975
1976         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
1977         for (i = 0; i < res->num; i++) {
1978                 struct wpa_scan_res *r = res->res[i];
1979                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
1980                            (int) i, (int) res->num, MAC2STR(r->bssid),
1981                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
1982                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
1983         }
1984
1985         wpa_scan_results_free(res);
1986 }
1987
1988
1989 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1990                                       enum wpa_alg alg, const u8 *addr,
1991                                       int key_idx, int set_tx,
1992                                       const u8 *seq, size_t seq_len,
1993                                       const u8 *key, size_t key_len)
1994 {
1995         struct i802_bss *bss = priv;
1996         struct wpa_driver_nl80211_data *drv = bss->drv;
1997         int ifindex = if_nametoindex(ifname);
1998         struct nl_msg *msg;
1999         int ret;
2000
2001         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2002                    "set_tx=%d seq_len=%lu key_len=%lu",
2003                    __func__, ifindex, alg, addr, key_idx, set_tx,
2004                    (unsigned long) seq_len, (unsigned long) key_len);
2005
2006         msg = nlmsg_alloc();
2007         if (!msg)
2008                 return -ENOMEM;
2009
2010         if (alg == WPA_ALG_NONE) {
2011                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2012                             0, NL80211_CMD_DEL_KEY, 0);
2013         } else {
2014                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2015                             0, NL80211_CMD_NEW_KEY, 0);
2016                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2017                 switch (alg) {
2018                 case WPA_ALG_WEP:
2019                         if (key_len == 5)
2020                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2021                                             WLAN_CIPHER_SUITE_WEP40);
2022                         else
2023                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2024                                             WLAN_CIPHER_SUITE_WEP104);
2025                         break;
2026                 case WPA_ALG_TKIP:
2027                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2028                                     WLAN_CIPHER_SUITE_TKIP);
2029                         break;
2030                 case WPA_ALG_CCMP:
2031                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2032                                     WLAN_CIPHER_SUITE_CCMP);
2033                         break;
2034                 case WPA_ALG_IGTK:
2035                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2036                                     WLAN_CIPHER_SUITE_AES_CMAC);
2037                         break;
2038                 default:
2039                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2040                                    "algorithm %d", __func__, alg);
2041                         nlmsg_free(msg);
2042                         return -1;
2043                 }
2044         }
2045
2046         if (seq && seq_len)
2047                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2048
2049         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2050         {
2051                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2052                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2053         }
2054         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2055         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2056
2057         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2058         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2059                 ret = 0;
2060         if (ret)
2061                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2062                            ret, strerror(-ret));
2063
2064         /*
2065          * If we failed or don't need to set the default TX key (below),
2066          * we're done here.
2067          */
2068         if (ret || !set_tx || alg == WPA_ALG_NONE)
2069                 return ret;
2070 #ifdef HOSTAPD /* FIX: is this needed? */
2071         if (addr)
2072                 return ret;
2073 #endif /* HOSTAPD */
2074
2075         msg = nlmsg_alloc();
2076         if (!msg)
2077                 return -ENOMEM;
2078
2079         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2080                     0, NL80211_CMD_SET_KEY, 0);
2081         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2082         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2083         if (alg == WPA_ALG_IGTK)
2084                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2085         else
2086                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2087
2088         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2089         if (ret == -ENOENT)
2090                 ret = 0;
2091         if (ret)
2092                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2093                            "err=%d %s)", ret, strerror(-ret));
2094         return ret;
2095
2096 nla_put_failure:
2097         return -ENOBUFS;
2098 }
2099
2100
2101 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2102                       int key_idx, int defkey,
2103                       const u8 *seq, size_t seq_len,
2104                       const u8 *key, size_t key_len)
2105 {
2106         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2107         if (!key_attr)
2108                 return -1;
2109
2110         if (defkey && alg == WPA_ALG_IGTK)
2111                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2112         else if (defkey)
2113                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2114
2115         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2116
2117         switch (alg) {
2118         case WPA_ALG_WEP:
2119                 if (key_len == 5)
2120                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2121                                     WLAN_CIPHER_SUITE_WEP40);
2122                 else
2123                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2124                                     WLAN_CIPHER_SUITE_WEP104);
2125                 break;
2126         case WPA_ALG_TKIP:
2127                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2128                 break;
2129         case WPA_ALG_CCMP:
2130                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2131                 break;
2132         case WPA_ALG_IGTK:
2133                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2134                             WLAN_CIPHER_SUITE_AES_CMAC);
2135                 break;
2136         default:
2137                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2138                            "algorithm %d", __func__, alg);
2139                 return -1;
2140         }
2141
2142         if (seq && seq_len)
2143                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2144
2145         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2146
2147         nla_nest_end(msg, key_attr);
2148
2149         return 0;
2150  nla_put_failure:
2151         return -1;
2152 }
2153
2154
2155 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2156                                  struct nl_msg *msg)
2157 {
2158         int i, privacy = 0;
2159         struct nlattr *nl_keys, *nl_key;
2160
2161         for (i = 0; i < 4; i++) {
2162                 if (!params->wep_key[i])
2163                         continue;
2164                 privacy = 1;
2165                 break;
2166         }
2167         if (!privacy)
2168                 return 0;
2169
2170         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2171
2172         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2173         if (!nl_keys)
2174                 goto nla_put_failure;
2175
2176         for (i = 0; i < 4; i++) {
2177                 if (!params->wep_key[i])
2178                         continue;
2179
2180                 nl_key = nla_nest_start(msg, i);
2181                 if (!nl_key)
2182                         goto nla_put_failure;
2183
2184                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2185                         params->wep_key[i]);
2186                 if (params->wep_key_len[i] == 5)
2187                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2188                                     WLAN_CIPHER_SUITE_WEP40);
2189                 else
2190                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2191                                     WLAN_CIPHER_SUITE_WEP104);
2192
2193                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2194
2195                 if (i == params->wep_tx_keyidx)
2196                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2197
2198                 nla_nest_end(msg, nl_key);
2199         }
2200         nla_nest_end(msg, nl_keys);
2201
2202         return 0;
2203
2204 nla_put_failure:
2205         return -ENOBUFS;
2206 }
2207
2208
2209 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2210                                    const u8 *addr, int cmd, u16 reason_code)
2211 {
2212         int ret = -1;
2213         struct nl_msg *msg;
2214
2215         msg = nlmsg_alloc();
2216         if (!msg)
2217                 return -1;
2218
2219         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2220
2221         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2222         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2223         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2224
2225         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2226         msg = NULL;
2227         if (ret) {
2228                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2229                            "(%s)", ret, strerror(-ret));
2230                 goto nla_put_failure;
2231         }
2232         ret = 0;
2233
2234 nla_put_failure:
2235         nlmsg_free(msg);
2236         return ret;
2237 }
2238
2239
2240 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2241                                          const u8 *addr, int reason_code)
2242 {
2243         wpa_printf(MSG_DEBUG, "%s", __func__);
2244         drv->associated = 0;
2245         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2246                                        reason_code);
2247 }
2248
2249
2250 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2251                                              int reason_code)
2252 {
2253         struct i802_bss *bss = priv;
2254         struct wpa_driver_nl80211_data *drv = bss->drv;
2255         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2256                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2257         wpa_printf(MSG_DEBUG, "%s", __func__);
2258         drv->associated = 0;
2259         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2260                                        reason_code);
2261 }
2262
2263
2264 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2265                                            int reason_code)
2266 {
2267         struct i802_bss *bss = priv;
2268         struct wpa_driver_nl80211_data *drv = bss->drv;
2269         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2270                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2271         wpa_printf(MSG_DEBUG, "%s", __func__);
2272         drv->associated = 0;
2273         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2274                                        reason_code);
2275 }
2276
2277
2278 static int wpa_driver_nl80211_authenticate(
2279         void *priv, struct wpa_driver_auth_params *params)
2280 {
2281         struct i802_bss *bss = priv;
2282         struct wpa_driver_nl80211_data *drv = bss->drv;
2283         int ret = -1, i;
2284         struct nl_msg *msg;
2285         enum nl80211_auth_type type;
2286         int count = 0;
2287
2288         drv->associated = 0;
2289         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2290         /* FIX: IBSS mode */
2291         if (drv->nlmode != NL80211_IFTYPE_STATION)
2292                 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2293
2294         if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2295                 return -1;
2296
2297 retry:
2298         msg = nlmsg_alloc();
2299         if (!msg)
2300                 return -1;
2301
2302         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2303                    drv->ifindex);
2304
2305         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2306                     NL80211_CMD_AUTHENTICATE, 0);
2307
2308         for (i = 0; i < 4; i++) {
2309                 if (!params->wep_key[i])
2310                         continue;
2311                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2312                                            NULL, i,
2313                                            i == params->wep_tx_keyidx, NULL, 0,
2314                                            params->wep_key[i],
2315                                            params->wep_key_len[i]);
2316                 if (params->wep_tx_keyidx != i)
2317                         continue;
2318                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2319                                params->wep_key[i], params->wep_key_len[i])) {
2320                         nlmsg_free(msg);
2321                         return -1;
2322                 }
2323         }
2324
2325         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2326         if (params->bssid) {
2327                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2328                            MAC2STR(params->bssid));
2329                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2330         }
2331         if (params->freq) {
2332                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2333                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2334         }
2335         if (params->ssid) {
2336                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2337                                   params->ssid, params->ssid_len);
2338                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2339                         params->ssid);
2340         }
2341         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2342         if (params->ie)
2343                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2344         /*
2345          * TODO: if multiple auth_alg options enabled, try them one by one if
2346          * the AP rejects authentication due to unknown auth alg
2347          */
2348         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2349                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2350         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2351                 type = NL80211_AUTHTYPE_SHARED_KEY;
2352         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2353                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2354         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2355                 type = NL80211_AUTHTYPE_FT;
2356         else
2357                 goto nla_put_failure;
2358         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2359         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2360
2361         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2362         msg = NULL;
2363         if (ret) {
2364                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2365                            "(%s)", ret, strerror(-ret));
2366                 count++;
2367                 if (ret == -EALREADY && count == 1 && params->bssid) {
2368                         /*
2369                          * mac80211 does not currently accept new
2370                          * authentication if we are already authenticated. As a
2371                          * workaround, force deauthentication and try again.
2372                          */
2373                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2374                                    "after forced deauthentication");
2375                         wpa_driver_nl80211_deauthenticate(
2376                                 bss, params->bssid,
2377                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2378                         nlmsg_free(msg);
2379                         goto retry;
2380                 }
2381                 goto nla_put_failure;
2382         }
2383         ret = 0;
2384         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2385                    "successfully");
2386
2387 nla_put_failure:
2388         nlmsg_free(msg);
2389         return ret;
2390 }
2391
2392
2393 struct phy_info_arg {
2394         u16 *num_modes;
2395         struct hostapd_hw_modes *modes;
2396 };
2397
2398 static int phy_info_handler(struct nl_msg *msg, void *arg)
2399 {
2400         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2401         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2402         struct phy_info_arg *phy_info = arg;
2403
2404         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2405
2406         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2407         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2408                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2409                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2410                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2411                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2412                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2413                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2414         };
2415
2416         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2417         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2418                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2419                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2420         };
2421
2422         struct nlattr *nl_band;
2423         struct nlattr *nl_freq;
2424         struct nlattr *nl_rate;
2425         int rem_band, rem_freq, rem_rate;
2426         struct hostapd_hw_modes *mode;
2427         int idx, mode_is_set;
2428
2429         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2430                   genlmsg_attrlen(gnlh, 0), NULL);
2431
2432         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2433                 return NL_SKIP;
2434
2435         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2436                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2437                 if (!mode)
2438                         return NL_SKIP;
2439                 phy_info->modes = mode;
2440
2441                 mode_is_set = 0;
2442
2443                 mode = &phy_info->modes[*(phy_info->num_modes)];
2444                 memset(mode, 0, sizeof(*mode));
2445                 *(phy_info->num_modes) += 1;
2446
2447                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2448                           nla_len(nl_band), NULL);
2449
2450                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2451                         mode->ht_capab = nla_get_u16(
2452                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2453                 }
2454
2455                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2456                         mode->a_mpdu_params |= nla_get_u8(
2457                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2458                                 0x03;
2459                 }
2460
2461                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2462                         mode->a_mpdu_params |= nla_get_u8(
2463                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2464                                 2;
2465                 }
2466
2467                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2468                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2469                         u8 *mcs;
2470                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2471                         os_memcpy(mode->mcs_set, mcs, 16);
2472                 }
2473
2474                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2475                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2476                                   nla_len(nl_freq), freq_policy);
2477                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2478                                 continue;
2479                         mode->num_channels++;
2480                 }
2481
2482                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2483                 if (!mode->channels)
2484                         return NL_SKIP;
2485
2486                 idx = 0;
2487
2488                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2489                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2490                                   nla_len(nl_freq), freq_policy);
2491                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2492                                 continue;
2493
2494                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2495                         mode->channels[idx].flag = 0;
2496
2497                         if (!mode_is_set) {
2498                                 /* crude heuristic */
2499                                 if (mode->channels[idx].freq < 4000)
2500                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2501                                 else
2502                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2503                                 mode_is_set = 1;
2504                         }
2505
2506                         /* crude heuristic */
2507                         if (mode->channels[idx].freq < 4000)
2508                                 if (mode->channels[idx].freq == 2484)
2509                                         mode->channels[idx].chan = 14;
2510                                 else
2511                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2512                         else
2513                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2514
2515                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2516                                 mode->channels[idx].flag |=
2517                                         HOSTAPD_CHAN_DISABLED;
2518                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2519                                 mode->channels[idx].flag |=
2520                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2521                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2522                                 mode->channels[idx].flag |=
2523                                         HOSTAPD_CHAN_NO_IBSS;
2524                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2525                                 mode->channels[idx].flag |=
2526                                         HOSTAPD_CHAN_RADAR;
2527
2528                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2529                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2530                                 mode->channels[idx].max_tx_power =
2531                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2532
2533                         idx++;
2534                 }
2535
2536                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2537                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2538                                   nla_len(nl_rate), rate_policy);
2539                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2540                                 continue;
2541                         mode->num_rates++;
2542                 }
2543
2544                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2545                 if (!mode->rates)
2546                         return NL_SKIP;
2547
2548                 idx = 0;
2549
2550                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2551                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2552                                   nla_len(nl_rate), rate_policy);
2553                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2554                                 continue;
2555                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2556
2557                         /* crude heuristic */
2558                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2559                             mode->rates[idx] > 200)
2560                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2561
2562                         idx++;
2563                 }
2564         }
2565
2566         return NL_SKIP;
2567 }
2568
2569 static struct hostapd_hw_modes *
2570 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2571 {
2572         u16 m;
2573         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2574         int i, mode11g_idx = -1;
2575
2576         /* If only 802.11g mode is included, use it to construct matching
2577          * 802.11b mode data. */
2578
2579         for (m = 0; m < *num_modes; m++) {
2580                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2581                         return modes; /* 802.11b already included */
2582                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2583                         mode11g_idx = m;
2584         }
2585
2586         if (mode11g_idx < 0)
2587                 return modes; /* 2.4 GHz band not supported at all */
2588
2589         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2590         if (nmodes == NULL)
2591                 return modes; /* Could not add 802.11b mode */
2592
2593         mode = &nmodes[*num_modes];
2594         os_memset(mode, 0, sizeof(*mode));
2595         (*num_modes)++;
2596         modes = nmodes;
2597
2598         mode->mode = HOSTAPD_MODE_IEEE80211B;
2599
2600         mode11g = &modes[mode11g_idx];
2601         mode->num_channels = mode11g->num_channels;
2602         mode->channels = os_malloc(mode11g->num_channels *
2603                                    sizeof(struct hostapd_channel_data));
2604         if (mode->channels == NULL) {
2605                 (*num_modes)--;
2606                 return modes; /* Could not add 802.11b mode */
2607         }
2608         os_memcpy(mode->channels, mode11g->channels,
2609                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
2610
2611         mode->num_rates = 0;
2612         mode->rates = os_malloc(4 * sizeof(int));
2613         if (mode->rates == NULL) {
2614                 os_free(mode->channels);
2615                 (*num_modes)--;
2616                 return modes; /* Could not add 802.11b mode */
2617         }
2618
2619         for (i = 0; i < mode11g->num_rates; i++) {
2620                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2621                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2622                         continue;
2623                 mode->rates[mode->num_rates] = mode11g->rates[i];
2624                 mode->num_rates++;
2625                 if (mode->num_rates == 4)
2626                         break;
2627         }
2628
2629         if (mode->num_rates == 0) {
2630                 os_free(mode->channels);
2631                 os_free(mode->rates);
2632                 (*num_modes)--;
2633                 return modes; /* No 802.11b rates */
2634         }
2635
2636         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2637                    "information");
2638
2639         return modes;
2640 }
2641
2642
2643 static struct hostapd_hw_modes *
2644 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2645 {
2646         struct i802_bss *bss = priv;
2647         struct wpa_driver_nl80211_data *drv = bss->drv;
2648         struct nl_msg *msg;
2649         struct phy_info_arg result = {
2650                 .num_modes = num_modes,
2651                 .modes = NULL,
2652         };
2653
2654         *num_modes = 0;
2655         *flags = 0;
2656
2657         msg = nlmsg_alloc();
2658         if (!msg)
2659                 return NULL;
2660
2661         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2662                     0, NL80211_CMD_GET_WIPHY, 0);
2663
2664         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2665
2666         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2667                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2668  nla_put_failure:
2669         return NULL;
2670 }
2671
2672
2673 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2674                                          const void *data, size_t len,
2675                                          int encrypt)
2676 {
2677         __u8 rtap_hdr[] = {
2678                 0x00, 0x00, /* radiotap version */
2679                 0x0e, 0x00, /* radiotap length */
2680                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2681                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2682                 0x00,       /* padding */
2683                 0x00, 0x00, /* RX and TX flags to indicate that */
2684                 0x00, 0x00, /* this is the injected frame directly */
2685         };
2686         struct iovec iov[2] = {
2687                 {
2688                         .iov_base = &rtap_hdr,
2689                         .iov_len = sizeof(rtap_hdr),
2690                 },
2691                 {
2692                         .iov_base = (void *) data,
2693                         .iov_len = len,
2694                 }
2695         };
2696         struct msghdr msg = {
2697                 .msg_name = NULL,
2698                 .msg_namelen = 0,
2699                 .msg_iov = iov,
2700                 .msg_iovlen = 2,
2701                 .msg_control = NULL,
2702                 .msg_controllen = 0,
2703                 .msg_flags = 0,
2704         };
2705
2706         if (encrypt)
2707                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2708
2709         return sendmsg(drv->monitor_sock, &msg, 0);
2710 }
2711
2712
2713 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2714                                         size_t data_len)
2715 {
2716         struct i802_bss *bss = priv;
2717         struct wpa_driver_nl80211_data *drv = bss->drv;
2718         struct ieee80211_mgmt *mgmt;
2719         int encrypt = 1;
2720         u16 fc;
2721
2722         mgmt = (struct ieee80211_mgmt *) data;
2723         fc = le_to_host16(mgmt->frame_control);
2724
2725         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2726             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2727                 /*
2728                  * Only one of the authentication frame types is encrypted.
2729                  * In order for static WEP encryption to work properly (i.e.,
2730                  * to not encrypt the frame), we need to tell mac80211 about
2731                  * the frames that must not be encrypted.
2732                  */
2733                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2734                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2735                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2736                         encrypt = 0;
2737         }
2738
2739         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2740 }
2741
2742
2743 static int wpa_driver_nl80211_set_beacon(void *priv,
2744                                          const u8 *head, size_t head_len,
2745                                          const u8 *tail, size_t tail_len,
2746                                          int dtim_period, int beacon_int)
2747 {
2748         struct i802_bss *bss = priv;
2749         struct wpa_driver_nl80211_data *drv = bss->drv;
2750         struct nl_msg *msg;
2751         u8 cmd = NL80211_CMD_NEW_BEACON;
2752         int ret;
2753         int beacon_set;
2754         int ifindex = if_nametoindex(bss->ifname);
2755
2756         beacon_set = bss->beacon_set;
2757
2758         msg = nlmsg_alloc();
2759         if (!msg)
2760                 return -ENOMEM;
2761
2762         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2763                    beacon_set);
2764         if (beacon_set)
2765                 cmd = NL80211_CMD_SET_BEACON;
2766
2767         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2768                     0, cmd, 0);
2769         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2770         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2771         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2772         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2773         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2774
2775         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2776         if (ret) {
2777                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2778                            ret, strerror(-ret));
2779         } else {
2780                 bss->beacon_set = 1;
2781         }
2782         return ret;
2783  nla_put_failure:
2784         return -ENOBUFS;
2785 }
2786
2787
2788 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2789                                        int freq, int ht_enabled,
2790                                        int sec_channel_offset)
2791 {
2792         struct nl_msg *msg;
2793         int ret;
2794
2795         msg = nlmsg_alloc();
2796         if (!msg)
2797                 return -1;
2798
2799         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2800                     NL80211_CMD_SET_WIPHY, 0);
2801
2802         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2803         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2804         if (ht_enabled) {
2805                 switch (sec_channel_offset) {
2806                 case -1:
2807                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2808                                     NL80211_CHAN_HT40MINUS);
2809                         break;
2810                 case 1:
2811                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2812                                     NL80211_CHAN_HT40PLUS);
2813                         break;
2814                 default:
2815                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2816                                     NL80211_CHAN_HT20);
2817                         break;
2818                 }
2819         }
2820
2821         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2822         if (ret == 0)
2823                 return 0;
2824         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2825                    "%d (%s)", freq, ret, strerror(-ret));
2826 nla_put_failure:
2827         return -1;
2828 }
2829
2830
2831 static int wpa_driver_nl80211_sta_add(void *priv,
2832                                       struct hostapd_sta_add_params *params)
2833 {
2834         struct i802_bss *bss = priv;
2835         struct wpa_driver_nl80211_data *drv = bss->drv;
2836         struct nl_msg *msg;
2837         int ret = -ENOBUFS;
2838
2839         msg = nlmsg_alloc();
2840         if (!msg)
2841                 return -ENOMEM;
2842
2843         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2844                     0, NL80211_CMD_NEW_STATION, 0);
2845
2846         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
2847         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2848         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2849         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2850                 params->supp_rates);
2851         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2852                     params->listen_interval);
2853         if (params->ht_capabilities) {
2854                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2855                         sizeof(*params->ht_capabilities),
2856                         params->ht_capabilities);
2857         }
2858
2859         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2860         if (ret)
2861                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2862                            "result: %d (%s)", ret, strerror(-ret));
2863         if (ret == -EEXIST)
2864                 ret = 0;
2865  nla_put_failure:
2866         return ret;
2867 }
2868
2869
2870 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2871 {
2872         struct i802_bss *bss = priv;
2873         struct wpa_driver_nl80211_data *drv = bss->drv;
2874         struct nl_msg *msg;
2875         int ret;
2876
2877         msg = nlmsg_alloc();
2878         if (!msg)
2879                 return -ENOMEM;
2880
2881         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2882                     0, NL80211_CMD_DEL_STATION, 0);
2883
2884         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2885                     if_nametoindex(bss->ifname));
2886         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2887
2888         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2889         if (ret == -ENOENT)
2890                 return 0;
2891         return ret;
2892  nla_put_failure:
2893         return -ENOBUFS;
2894 }
2895
2896
2897 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2898                                  int ifidx)
2899 {
2900         struct nl_msg *msg;
2901
2902         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2903
2904 #ifdef HOSTAPD
2905         /* stop listening for EAPOL on this interface */
2906         del_ifidx(drv, ifidx);
2907 #endif /* HOSTAPD */
2908
2909         msg = nlmsg_alloc();
2910         if (!msg)
2911                 goto nla_put_failure;
2912
2913         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2914                     0, NL80211_CMD_DEL_INTERFACE, 0);
2915         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2916
2917         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2918                 return;
2919  nla_put_failure:
2920         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
2921 }
2922
2923
2924 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2925                                      const char *ifname,
2926                                      enum nl80211_iftype iftype,
2927                                      const u8 *addr, int wds)
2928 {
2929         struct nl_msg *msg, *flags = NULL;
2930         int ifidx;
2931         int ret = -ENOBUFS;
2932
2933         msg = nlmsg_alloc();
2934         if (!msg)
2935                 return -1;
2936
2937         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2938                     0, NL80211_CMD_NEW_INTERFACE, 0);
2939         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2940         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2941         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2942
2943         if (iftype == NL80211_IFTYPE_MONITOR) {
2944                 int err;
2945
2946                 flags = nlmsg_alloc();
2947                 if (!flags)
2948                         goto nla_put_failure;
2949
2950                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2951
2952                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2953
2954                 nlmsg_free(flags);
2955
2956                 if (err)
2957                         goto nla_put_failure;
2958         } else if (wds) {
2959                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
2960         }
2961
2962         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2963         if (ret) {
2964  nla_put_failure:
2965                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2966                            ifname, ret, strerror(-ret));
2967                 return ret;
2968         }
2969
2970         ifidx = if_nametoindex(ifname);
2971         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2972                    ifname, ifidx);
2973
2974         if (ifidx <= 0)
2975                 return -1;
2976
2977 #ifdef HOSTAPD
2978         /* start listening for EAPOL on this interface */
2979         add_ifidx(drv, ifidx);
2980 #endif /* HOSTAPD */
2981
2982         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2983             linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
2984                 nl80211_remove_iface(drv, ifidx);
2985                 return -1;
2986         }
2987
2988         return ifidx;
2989 }
2990
2991
2992 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2993                                 const char *ifname, enum nl80211_iftype iftype,
2994                                 const u8 *addr, int wds)
2995 {
2996         int ret;
2997
2998         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
2999
3000         /* if error occured and interface exists already */
3001         if (ret == -ENFILE && if_nametoindex(ifname)) {
3002                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3003
3004                 /* Try to remove the interface that was already there. */
3005                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3006
3007                 /* Try to create the interface again */
3008                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3009                                                 wds);
3010         }
3011
3012         if (ret >= 0 && drv->disable_11b_rates)
3013                 nl80211_disable_11b_rates(drv, ret, 1);
3014
3015         return ret;
3016 }
3017
3018
3019 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3020 {
3021         struct ieee80211_hdr *hdr;
3022         u16 fc;
3023         union wpa_event_data event;
3024
3025         hdr = (struct ieee80211_hdr *) buf;
3026         fc = le_to_host16(hdr->frame_control);
3027
3028         os_memset(&event, 0, sizeof(event));
3029         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3030         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3031         event.tx_status.dst = hdr->addr1;
3032         event.tx_status.data = buf;
3033         event.tx_status.data_len = len;
3034         event.tx_status.ack = ok;
3035         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3036 }
3037
3038
3039 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3040                              u8 *buf, size_t len)
3041 {
3042         union wpa_event_data event;
3043         os_memset(&event, 0, sizeof(event));
3044         event.rx_from_unknown.frame = buf;
3045         event.rx_from_unknown.len = len;
3046         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3047 }
3048
3049
3050 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3051                          u8 *buf, size_t len, int datarate, int ssi_signal)
3052 {
3053         struct ieee80211_hdr *hdr;
3054         u16 fc;
3055         union wpa_event_data event;
3056
3057         hdr = (struct ieee80211_hdr *) buf;
3058         fc = le_to_host16(hdr->frame_control);
3059
3060         switch (WLAN_FC_GET_TYPE(fc)) {
3061         case WLAN_FC_TYPE_MGMT:
3062                 os_memset(&event, 0, sizeof(event));
3063                 event.rx_mgmt.frame = buf;
3064                 event.rx_mgmt.frame_len = len;
3065                 event.rx_mgmt.datarate = datarate;
3066                 event.rx_mgmt.ssi_signal = ssi_signal;
3067                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3068                 break;
3069         case WLAN_FC_TYPE_CTRL:
3070                 /* can only get here with PS-Poll frames */
3071                 wpa_printf(MSG_DEBUG, "CTRL");
3072                 from_unknown_sta(drv, buf, len);
3073                 break;
3074         case WLAN_FC_TYPE_DATA:
3075                 from_unknown_sta(drv, buf, len);
3076                 break;
3077         }
3078 }
3079
3080
3081 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3082 {
3083         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3084         int len;
3085         unsigned char buf[3000];
3086         struct ieee80211_radiotap_iterator iter;
3087         int ret;
3088         int datarate = 0, ssi_signal = 0;
3089         int injected = 0, failed = 0, rxflags = 0;
3090
3091         len = recv(sock, buf, sizeof(buf), 0);
3092         if (len < 0) {
3093                 perror("recv");
3094                 return;
3095         }
3096
3097         if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3098                 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3099                            "frame since Probe Request reporting is disabled");
3100                 return;
3101         }
3102
3103         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3104                 printf("received invalid radiotap frame\n");
3105                 return;
3106         }
3107
3108         while (1) {
3109                 ret = ieee80211_radiotap_iterator_next(&iter);
3110                 if (ret == -ENOENT)
3111                         break;
3112                 if (ret) {
3113                         printf("received invalid radiotap frame (%d)\n", ret);
3114                         return;
3115                 }
3116                 switch (iter.this_arg_index) {
3117                 case IEEE80211_RADIOTAP_FLAGS:
3118                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3119                                 len -= 4;
3120                         break;
3121                 case IEEE80211_RADIOTAP_RX_FLAGS:
3122                         rxflags = 1;
3123                         break;
3124                 case IEEE80211_RADIOTAP_TX_FLAGS:
3125                         injected = 1;
3126                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3127                                         IEEE80211_RADIOTAP_F_TX_FAIL;
3128                         break;
3129                 case IEEE80211_RADIOTAP_DATA_RETRIES:
3130                         break;
3131                 case IEEE80211_RADIOTAP_CHANNEL:
3132                         /* TODO: convert from freq/flags to channel number */
3133                         break;
3134                 case IEEE80211_RADIOTAP_RATE:
3135                         datarate = *iter.this_arg * 5;
3136                         break;
3137                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3138                         ssi_signal = *iter.this_arg;
3139                         break;
3140                 }
3141         }
3142
3143         if (rxflags && injected)
3144                 return;
3145
3146         if (!injected)
3147                 handle_frame(drv, buf + iter.max_length,
3148                              len - iter.max_length, datarate, ssi_signal);
3149         else
3150                 handle_tx_callback(drv->ctx, buf + iter.max_length,
3151                                    len - iter.max_length, !failed);
3152 }
3153
3154
3155 /*
3156  * we post-process the filter code later and rewrite
3157  * this to the offset to the last instruction
3158  */
3159 #define PASS    0xFF
3160 #define FAIL    0xFE
3161
3162 static struct sock_filter msock_filter_insns[] = {
3163         /*
3164          * do a little-endian load of the radiotap length field
3165          */
3166         /* load lower byte into A */
3167         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
3168         /* put it into X (== index register) */
3169         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3170         /* load upper byte into A */
3171         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
3172         /* left-shift it by 8 */
3173         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3174         /* or with X */
3175         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3176         /* put result into X */
3177         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3178
3179         /*
3180          * Allow management frames through, this also gives us those
3181          * management frames that we sent ourselves with status
3182          */
3183         /* load the lower byte of the IEEE 802.11 frame control field */
3184         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
3185         /* mask off frame type and version */
3186         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3187         /* accept frame if it's both 0, fall through otherwise */
3188         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3189
3190         /*
3191          * TODO: add a bit to radiotap RX flags that indicates
3192          * that the sending station is not associated, then
3193          * add a filter here that filters on our DA and that flag
3194          * to allow us to deauth frames to that bad station.
3195          *
3196          * Not a regression -- we didn't do it before either.
3197          */
3198
3199 #if 0
3200         /*
3201          * drop non-data frames
3202          */
3203         /* load the lower byte of the frame control field */
3204         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3205         /* mask off QoS bit */
3206         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
3207         /* drop non-data frames */
3208         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
3209 #endif
3210         /* load the upper byte of the frame control field */
3211         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
3212         /* mask off toDS/fromDS */
3213         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
3214         /* accept WDS frames */
3215         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
3216
3217         /*
3218          * add header length to index
3219          */
3220         /* load the lower byte of the frame control field */
3221         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3222         /* mask off QoS bit */
3223         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
3224         /* right shift it by 6 to give 0 or 2 */
3225         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
3226         /* add data frame header length */
3227         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
3228         /* add index, was start of 802.11 header */
3229         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
3230         /* move to index, now start of LL header */
3231         BPF_STMT(BPF_MISC | BPF_TAX, 0),
3232
3233         /*
3234          * Accept empty data frames, we use those for
3235          * polling activity.
3236          */
3237         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
3238         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3239
3240         /*
3241          * Accept EAPOL frames
3242          */
3243         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
3244         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3245         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
3246         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3247
3248         /* keep these last two statements or change the code below */
3249         /* return 0 == "DROP" */
3250         BPF_STMT(BPF_RET | BPF_K, 0),
3251         /* return ~0 == "keep all" */
3252         BPF_STMT(BPF_RET | BPF_K, ~0),
3253 };
3254
3255 static struct sock_fprog msock_filter = {
3256         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3257         .filter = msock_filter_insns,
3258 };
3259
3260
3261 static int add_monitor_filter(int s)
3262 {
3263         int idx;
3264
3265         /* rewrite all PASS/FAIL jump offsets */
3266         for (idx = 0; idx < msock_filter.len; idx++) {
3267                 struct sock_filter *insn = &msock_filter_insns[idx];
3268
3269                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3270                         if (insn->code == (BPF_JMP|BPF_JA)) {
3271                                 if (insn->k == PASS)
3272                                         insn->k = msock_filter.len - idx - 2;
3273                                 else if (insn->k == FAIL)
3274                                         insn->k = msock_filter.len - idx - 3;
3275                         }
3276
3277                         if (insn->jt == PASS)
3278                                 insn->jt = msock_filter.len - idx - 2;
3279                         else if (insn->jt == FAIL)
3280                                 insn->jt = msock_filter.len - idx - 3;
3281
3282                         if (insn->jf == PASS)
3283                                 insn->jf = msock_filter.len - idx - 2;
3284                         else if (insn->jf == FAIL)
3285                                 insn->jf = msock_filter.len - idx - 3;
3286                 }
3287         }
3288
3289         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3290                        &msock_filter, sizeof(msock_filter))) {
3291                 perror("SO_ATTACH_FILTER");
3292                 return -1;
3293         }
3294
3295         return 0;
3296 }
3297
3298
3299 static void nl80211_remove_monitor_interface(
3300         struct wpa_driver_nl80211_data *drv)
3301 {
3302         if (drv->monitor_ifidx >= 0) {
3303                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3304                 drv->monitor_ifidx = -1;
3305         }
3306         if (drv->monitor_sock >= 0) {
3307                 eloop_unregister_read_sock(drv->monitor_sock);
3308                 close(drv->monitor_sock);
3309                 drv->monitor_sock = -1;
3310         }
3311 }
3312
3313
3314 static int
3315 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3316 {
3317         char buf[IFNAMSIZ];
3318         struct sockaddr_ll ll;
3319         int optval;
3320         socklen_t optlen;
3321
3322         snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3323         buf[IFNAMSIZ - 1] = '\0';
3324
3325         drv->monitor_ifidx =
3326                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3327                                      0);
3328
3329         if (drv->monitor_ifidx < 0)
3330                 return -1;
3331
3332         if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3333                 goto error;
3334
3335         memset(&ll, 0, sizeof(ll));
3336         ll.sll_family = AF_PACKET;
3337         ll.sll_ifindex = drv->monitor_ifidx;
3338         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3339         if (drv->monitor_sock < 0) {
3340                 perror("socket[PF_PACKET,SOCK_RAW]");
3341                 goto error;
3342         }
3343
3344         if (add_monitor_filter(drv->monitor_sock)) {
3345                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3346                            "interface; do filtering in user space");
3347                 /* This works, but will cost in performance. */
3348         }
3349
3350         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3351                 perror("monitor socket bind");
3352                 goto error;
3353         }
3354
3355         optlen = sizeof(optval);
3356         optval = 20;
3357         if (setsockopt
3358             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3359                 perror("Failed to set socket priority");
3360                 goto error;
3361         }
3362
3363         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3364                                      drv, NULL)) {
3365                 printf("Could not register monitor read socket\n");
3366                 goto error;
3367         }
3368
3369         return 0;
3370  error:
3371         nl80211_remove_monitor_interface(drv);
3372         return -1;
3373 }
3374
3375
3376 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3377
3378 static int wpa_driver_nl80211_hapd_send_eapol(
3379         void *priv, const u8 *addr, const u8 *data,
3380         size_t data_len, int encrypt, const u8 *own_addr)
3381 {
3382         struct i802_bss *bss = priv;
3383         struct wpa_driver_nl80211_data *drv = bss->drv;
3384         struct ieee80211_hdr *hdr;
3385         size_t len;
3386         u8 *pos;
3387         int res;
3388 #if 0 /* FIX */
3389         int qos = sta->flags & WPA_STA_WMM;
3390 #else
3391         int qos = 0;
3392 #endif
3393
3394         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3395                 data_len;
3396         hdr = os_zalloc(len);
3397         if (hdr == NULL) {
3398                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3399                        (unsigned long) len);
3400                 return -1;
3401         }
3402
3403         hdr->frame_control =
3404                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3405         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3406         if (encrypt)
3407                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3408 #if 0 /* To be enabled if qos determination is added above */
3409         if (qos) {
3410                 hdr->frame_control |=
3411                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3412         }
3413 #endif
3414
3415         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3416         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3417         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3418         pos = (u8 *) (hdr + 1);
3419
3420 #if 0 /* To be enabled if qos determination is added above */
3421         if (qos) {
3422                 /* add an empty QoS header if needed */
3423                 pos[0] = 0;
3424                 pos[1] = 0;
3425                 pos += 2;
3426         }
3427 #endif
3428
3429         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3430         pos += sizeof(rfc1042_header);
3431         WPA_PUT_BE16(pos, ETH_P_PAE);
3432         pos += 2;
3433         memcpy(pos, data, data_len);
3434
3435         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3436         if (res < 0) {
3437                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3438                            "failed: %d (%s)",
3439                            (unsigned long) len, errno, strerror(errno));
3440         }
3441         os_free(hdr);
3442
3443         return res;
3444 }
3445
3446
3447 static u32 sta_flags_nl80211(int flags)
3448 {
3449         u32 f = 0;
3450
3451         if (flags & WPA_STA_AUTHORIZED)
3452                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3453         if (flags & WPA_STA_WMM)
3454                 f |= BIT(NL80211_STA_FLAG_WME);
3455         if (flags & WPA_STA_SHORT_PREAMBLE)
3456                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3457         if (flags & WPA_STA_MFP)
3458                 f |= BIT(NL80211_STA_FLAG_MFP);
3459
3460         return f;
3461 }
3462
3463
3464 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3465                                             int total_flags,
3466                                             int flags_or, int flags_and)
3467 {
3468         struct i802_bss *bss = priv;
3469         struct wpa_driver_nl80211_data *drv = bss->drv;
3470         struct nl_msg *msg, *flags = NULL;
3471         struct nl80211_sta_flag_update upd;
3472
3473         msg = nlmsg_alloc();
3474         if (!msg)
3475                 return -ENOMEM;
3476
3477         flags = nlmsg_alloc();
3478         if (!flags) {
3479                 nlmsg_free(msg);
3480                 return -ENOMEM;
3481         }
3482
3483         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3484                     0, NL80211_CMD_SET_STATION, 0);
3485
3486         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3487                     if_nametoindex(bss->ifname));
3488         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3489
3490         /*
3491          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3492          * can be removed eventually.
3493          */
3494         if (total_flags & WPA_STA_AUTHORIZED)
3495                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3496
3497         if (total_flags & WPA_STA_WMM)
3498                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3499
3500         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3501                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3502
3503         if (total_flags & WPA_STA_MFP)
3504                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3505
3506         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3507                 goto nla_put_failure;
3508
3509         os_memset(&upd, 0, sizeof(upd));
3510         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3511         upd.set = sta_flags_nl80211(flags_or);
3512         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3513
3514         nlmsg_free(flags);
3515
3516         return send_and_recv_msgs(drv, msg, NULL, NULL);
3517  nla_put_failure:
3518         nlmsg_free(flags);
3519         return -ENOBUFS;
3520 }
3521
3522
3523 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3524                                  struct wpa_driver_associate_params *params)
3525 {
3526         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3527             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3528                 nl80211_remove_monitor_interface(drv);
3529                 return -1;
3530         }
3531
3532         /* TODO: setup monitor interface (and add code somewhere to remove this
3533          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3534
3535         return 0;
3536 }
3537
3538
3539 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3540 {
3541         struct nl_msg *msg;
3542         int ret = -1;
3543
3544         msg = nlmsg_alloc();
3545         if (!msg)
3546                 return -1;
3547
3548         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3549                     NL80211_CMD_LEAVE_IBSS, 0);
3550         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3551         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3552         msg = NULL;
3553         if (ret) {
3554                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3555                            "(%s)", ret, strerror(-ret));
3556                 goto nla_put_failure;
3557         }
3558
3559         ret = 0;
3560         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3561
3562 nla_put_failure:
3563         nlmsg_free(msg);
3564         return ret;
3565 }
3566
3567
3568 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3569                                    struct wpa_driver_associate_params *params)
3570 {
3571         struct nl_msg *msg;
3572         int ret = -1;
3573         int count = 0;
3574
3575         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3576
3577         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3578                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3579                            "IBSS mode");
3580                 return -1;
3581         }
3582
3583 retry:
3584         msg = nlmsg_alloc();
3585         if (!msg)
3586                 return -1;
3587
3588         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3589                     NL80211_CMD_JOIN_IBSS, 0);
3590         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3591
3592         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3593                 goto nla_put_failure;
3594
3595         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3596                           params->ssid, params->ssid_len);
3597         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3598                 params->ssid);
3599         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3600         drv->ssid_len = params->ssid_len;
3601
3602         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3603         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3604
3605         ret = nl80211_set_conn_keys(params, msg);
3606         if (ret)
3607                 goto nla_put_failure;
3608
3609         if (params->wpa_ie) {
3610                 wpa_hexdump(MSG_DEBUG,
3611                             "  * Extra IEs for Beacon/Probe Response frames",
3612                             params->wpa_ie, params->wpa_ie_len);
3613                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3614                         params->wpa_ie);
3615         }
3616
3617         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3618         msg = NULL;
3619         if (ret) {
3620                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3621                            ret, strerror(-ret));
3622                 count++;
3623                 if (ret == -EALREADY && count == 1) {
3624                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3625                                    "forced leave");
3626                         nl80211_leave_ibss(drv);
3627                         nlmsg_free(msg);
3628                         goto retry;
3629                 }
3630
3631                 goto nla_put_failure;
3632         }
3633         ret = 0;
3634         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3635
3636 nla_put_failure:
3637         nlmsg_free(msg);
3638         return ret;
3639 }
3640
3641
3642 static int wpa_driver_nl80211_connect(
3643         struct wpa_driver_nl80211_data *drv,
3644         struct wpa_driver_associate_params *params)
3645 {
3646         struct nl_msg *msg;
3647         enum nl80211_auth_type type;
3648         int ret = 0;
3649
3650         msg = nlmsg_alloc();
3651         if (!msg)
3652                 return -1;
3653
3654         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3655         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3656                     NL80211_CMD_CONNECT, 0);
3657
3658         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3659         if (params->bssid) {
3660                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3661                            MAC2STR(params->bssid));
3662                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3663         }
3664         if (params->freq) {
3665                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3666                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3667         }
3668         if (params->ssid) {
3669                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3670                                   params->ssid, params->ssid_len);
3671                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3672                         params->ssid);
3673                 if (params->ssid_len > sizeof(drv->ssid))
3674                         goto nla_put_failure;
3675                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3676                 drv->ssid_len = params->ssid_len;
3677         }
3678         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3679         if (params->wpa_ie)
3680                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3681                         params->wpa_ie);
3682
3683         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3684                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3685         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3686                 type = NL80211_AUTHTYPE_SHARED_KEY;
3687         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3688                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3689         else if (params->auth_alg & WPA_AUTH_ALG_FT)
3690                 type = NL80211_AUTHTYPE_FT;
3691         else
3692                 goto nla_put_failure;
3693
3694         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3695         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3696
3697         if (params->wpa_ie && params->wpa_ie_len) {
3698                 enum nl80211_wpa_versions ver;
3699
3700                 if (params->wpa_ie[0] == WLAN_EID_RSN)
3701                         ver = NL80211_WPA_VERSION_2;
3702                 else
3703                         ver = NL80211_WPA_VERSION_1;
3704
3705                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
3706                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3707         }
3708
3709         if (params->pairwise_suite != CIPHER_NONE) {
3710                 int cipher;
3711
3712                 switch (params->pairwise_suite) {
3713                 case CIPHER_WEP40:
3714                         cipher = WLAN_CIPHER_SUITE_WEP40;
3715                         break;
3716                 case CIPHER_WEP104:
3717                         cipher = WLAN_CIPHER_SUITE_WEP104;
3718                         break;
3719                 case CIPHER_CCMP:
3720                         cipher = WLAN_CIPHER_SUITE_CCMP;
3721                         break;
3722                 case CIPHER_TKIP:
3723                 default:
3724                         cipher = WLAN_CIPHER_SUITE_TKIP;
3725                         break;
3726                 }
3727                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3728         }
3729
3730         if (params->group_suite != CIPHER_NONE) {
3731                 int cipher;
3732
3733                 switch (params->group_suite) {
3734                 case CIPHER_WEP40:
3735                         cipher = WLAN_CIPHER_SUITE_WEP40;
3736                         break;
3737                 case CIPHER_WEP104:
3738                         cipher = WLAN_CIPHER_SUITE_WEP104;
3739                         break;
3740                 case CIPHER_CCMP:
3741                         cipher = WLAN_CIPHER_SUITE_CCMP;
3742                         break;
3743                 case CIPHER_TKIP:
3744                 default:
3745                         cipher = WLAN_CIPHER_SUITE_TKIP;
3746                         break;
3747                 }
3748                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3749         }
3750
3751         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3752             params->key_mgmt_suite == KEY_MGMT_PSK) {
3753                 int mgmt = WLAN_AKM_SUITE_PSK;
3754
3755                 switch (params->key_mgmt_suite) {
3756                 case KEY_MGMT_802_1X:
3757                         mgmt = WLAN_AKM_SUITE_8021X;
3758                         break;
3759                 case KEY_MGMT_PSK:
3760                 default:
3761                         mgmt = WLAN_AKM_SUITE_PSK;
3762                         break;
3763                 }
3764                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3765         }
3766
3767         ret = nl80211_set_conn_keys(params, msg);
3768         if (ret)
3769                 goto nla_put_failure;
3770
3771         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3772         msg = NULL;
3773         if (ret) {
3774                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3775                            "(%s)", ret, strerror(-ret));
3776                 goto nla_put_failure;
3777         }
3778         ret = 0;
3779         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3780
3781 nla_put_failure:
3782         nlmsg_free(msg);
3783         return ret;
3784
3785 }
3786
3787
3788 static int wpa_driver_nl80211_associate(
3789         void *priv, struct wpa_driver_associate_params *params)
3790 {
3791         struct i802_bss *bss = priv;
3792         struct wpa_driver_nl80211_data *drv = bss->drv;
3793         int ret = -1;
3794         struct nl_msg *msg;
3795
3796         if (params->mode == IEEE80211_MODE_AP)
3797                 return wpa_driver_nl80211_ap(drv, params);
3798
3799         if (params->mode == IEEE80211_MODE_IBSS)
3800                 return wpa_driver_nl80211_ibss(drv, params);
3801
3802         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3803                 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
3804                         return -1;
3805                 return wpa_driver_nl80211_connect(drv, params);
3806         }
3807
3808         drv->associated = 0;
3809
3810         msg = nlmsg_alloc();
3811         if (!msg)
3812                 return -1;
3813
3814         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3815                    drv->ifindex);
3816         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3817                     NL80211_CMD_ASSOCIATE, 0);
3818
3819         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3820         if (params->bssid) {
3821                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3822                            MAC2STR(params->bssid));
3823                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3824         }
3825         if (params->freq) {
3826                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3827                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3828                 drv->assoc_freq = params->freq;
3829         } else
3830                 drv->assoc_freq = 0;
3831         if (params->ssid) {
3832                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3833                                   params->ssid, params->ssid_len);
3834                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3835                         params->ssid);
3836                 if (params->ssid_len > sizeof(drv->ssid))
3837                         goto nla_put_failure;
3838                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3839                 drv->ssid_len = params->ssid_len;
3840         }
3841         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3842         if (params->wpa_ie)
3843                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3844                         params->wpa_ie);
3845
3846 #ifdef CONFIG_IEEE80211W
3847         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3848                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3849 #endif /* CONFIG_IEEE80211W */
3850
3851         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3852
3853         if (params->prev_bssid) {
3854                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
3855                            MAC2STR(params->prev_bssid));
3856                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3857                         params->prev_bssid);
3858         }
3859
3860         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3861         msg = NULL;
3862         if (ret) {
3863                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3864                            "(%s)", ret, strerror(-ret));
3865                 nl80211_dump_scan(drv);
3866                 goto nla_put_failure;
3867         }
3868         ret = 0;
3869         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3870                    "successfully");
3871
3872 nla_put_failure:
3873         nlmsg_free(msg);
3874         return ret;
3875 }
3876
3877
3878 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3879                             int ifindex, int mode)
3880 {
3881         struct nl_msg *msg;
3882         int ret = -ENOBUFS;
3883
3884         msg = nlmsg_alloc();
3885         if (!msg)
3886                 return -ENOMEM;
3887
3888         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3889                     0, NL80211_CMD_SET_INTERFACE, 0);
3890         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3891         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3892
3893         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3894         if (!ret)
3895                 return 0;
3896 nla_put_failure:
3897         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3898                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
3899         return ret;
3900 }
3901
3902
3903 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3904 {
3905         struct i802_bss *bss = priv;
3906         struct wpa_driver_nl80211_data *drv = bss->drv;
3907         int ret = -1;
3908         int nlmode;
3909
3910         switch (mode) {
3911         case 0:
3912                 nlmode = NL80211_IFTYPE_STATION;
3913                 break;
3914         case 1:
3915                 nlmode = NL80211_IFTYPE_ADHOC;
3916                 break;
3917         case 2:
3918                 nlmode = NL80211_IFTYPE_AP;
3919                 break;
3920         default:
3921                 return -1;
3922         }
3923
3924         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3925                 drv->nlmode = nlmode;
3926                 ret = 0;
3927                 goto done;
3928         }
3929
3930         if (nlmode == drv->nlmode) {
3931                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3932                            "requested mode - ignore error");
3933                 ret = 0;
3934                 goto done; /* Already in the requested mode */
3935         }
3936
3937         /* mac80211 doesn't allow mode changes while the device is up, so
3938          * take the device down, try to set the mode again, and bring the
3939          * device back up.
3940          */
3941         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
3942                 /* Try to set the mode again while the interface is down */
3943                 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3944                 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
3945                         ret = -1;
3946         }
3947
3948         if (!ret) {
3949                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3950                            "interface is down");
3951                 drv->nlmode = nlmode;
3952         }
3953
3954 done:
3955         if (!ret && nlmode == NL80211_IFTYPE_AP) {
3956                 /* Setup additional AP mode functionality if needed */
3957                 if (drv->monitor_ifidx < 0 &&
3958                     nl80211_create_monitor_interface(drv))
3959                         return -1;
3960         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3961                 /* Remove additional AP mode functionality */
3962                 nl80211_remove_monitor_interface(drv);
3963                 bss->beacon_set = 0;
3964         }
3965
3966         if (ret)
3967                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3968                            "from %d failed", nlmode, drv->nlmode);
3969
3970         return ret;
3971 }
3972
3973
3974 static int wpa_driver_nl80211_get_capa(void *priv,
3975                                        struct wpa_driver_capa *capa)
3976 {
3977         struct i802_bss *bss = priv;
3978         struct wpa_driver_nl80211_data *drv = bss->drv;
3979         if (!drv->has_capability)
3980                 return -1;
3981         os_memcpy(capa, &drv->capa, sizeof(*capa));
3982         return 0;
3983 }
3984
3985
3986 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3987 {
3988         struct i802_bss *bss = priv;
3989         struct wpa_driver_nl80211_data *drv = bss->drv;
3990
3991         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3992                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3993         drv->operstate = state;
3994         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
3995                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
3996 }
3997
3998
3999 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4000 {
4001         struct i802_bss *bss = priv;
4002         struct wpa_driver_nl80211_data *drv = bss->drv;
4003         struct nl_msg *msg;
4004         struct nl80211_sta_flag_update upd;
4005
4006         msg = nlmsg_alloc();
4007         if (!msg)
4008                 return -ENOMEM;
4009
4010         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4011                     0, NL80211_CMD_SET_STATION, 0);
4012
4013         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4014                     if_nametoindex(bss->ifname));
4015         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4016
4017         os_memset(&upd, 0, sizeof(upd));
4018         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4019         if (authorized)
4020                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4021         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4022
4023         return send_and_recv_msgs(drv, msg, NULL, NULL);
4024  nla_put_failure:
4025         return -ENOBUFS;
4026 }
4027
4028
4029 #ifdef HOSTAPD
4030
4031 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4032 {
4033         int i;
4034         int *old;
4035
4036         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4037                    ifidx);
4038         for (i = 0; i < drv->num_if_indices; i++) {
4039                 if (drv->if_indices[i] == 0) {
4040                         drv->if_indices[i] = ifidx;
4041                         return;
4042                 }
4043         }
4044
4045         if (drv->if_indices != drv->default_if_indices)
4046                 old = drv->if_indices;
4047         else
4048                 old = NULL;
4049
4050         drv->if_indices = os_realloc(old,
4051                                      sizeof(int) * (drv->num_if_indices + 1));
4052         if (!drv->if_indices) {
4053                 if (!old)
4054                         drv->if_indices = drv->default_if_indices;
4055                 else
4056                         drv->if_indices = old;
4057                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4058                            "interfaces");
4059                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4060                 return;
4061         }
4062         drv->if_indices[drv->num_if_indices] = ifidx;
4063         drv->num_if_indices++;
4064 }
4065
4066
4067 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4068 {
4069         int i;
4070
4071         for (i = 0; i < drv->num_if_indices; i++) {
4072                 if (drv->if_indices[i] == ifidx) {
4073                         drv->if_indices[i] = 0;
4074                         break;
4075                 }
4076         }
4077 }
4078
4079
4080 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4081 {
4082         int i;
4083
4084         for (i = 0; i < drv->num_if_indices; i++)
4085                 if (drv->if_indices[i] == ifidx)
4086                         return 1;
4087
4088         return 0;
4089 }
4090
4091
4092 static inline int min_int(int a, int b)
4093 {
4094         if (a < b)
4095                 return a;
4096         return b;
4097 }
4098
4099
4100 static int get_key_handler(struct nl_msg *msg, void *arg)
4101 {
4102         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4103         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4104
4105         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4106                   genlmsg_attrlen(gnlh, 0), NULL);
4107
4108         /*
4109          * TODO: validate the key index and mac address!
4110          * Otherwise, there's a race condition as soon as
4111          * the kernel starts sending key notifications.
4112          */
4113
4114         if (tb[NL80211_ATTR_KEY_SEQ])
4115                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4116                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4117         return NL_SKIP;
4118 }
4119
4120
4121 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4122                            int idx, u8 *seq)
4123 {
4124         struct i802_bss *bss = priv;
4125         struct wpa_driver_nl80211_data *drv = bss->drv;
4126         struct nl_msg *msg;
4127
4128         msg = nlmsg_alloc();
4129         if (!msg)
4130                 return -ENOMEM;
4131
4132         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4133                     0, NL80211_CMD_GET_KEY, 0);
4134
4135         if (addr)
4136                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4137         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4138         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4139
4140         memset(seq, 0, 6);
4141
4142         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4143  nla_put_failure:
4144         return -ENOBUFS;
4145 }
4146
4147
4148 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4149                               int mode)
4150 {
4151         struct i802_bss *bss = priv;
4152         struct wpa_driver_nl80211_data *drv = bss->drv;
4153         struct nl_msg *msg;
4154         u8 rates[NL80211_MAX_SUPP_RATES];
4155         u8 rates_len = 0;
4156         int i;
4157
4158         msg = nlmsg_alloc();
4159         if (!msg)
4160                 return -ENOMEM;
4161
4162         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4163                     NL80211_CMD_SET_BSS, 0);
4164
4165         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4166                 rates[rates_len++] = basic_rates[i] / 5;
4167
4168         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4169
4170         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4171
4172         return send_and_recv_msgs(drv, msg, NULL, NULL);
4173  nla_put_failure:
4174         return -ENOBUFS;
4175 }
4176
4177
4178 /* Set kernel driver on given frequency (MHz) */
4179 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4180 {
4181         struct i802_bss *bss = priv;
4182         struct wpa_driver_nl80211_data *drv = bss->drv;
4183         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4184                                            freq->sec_channel_offset);
4185 }
4186
4187
4188 static int i802_set_rts(void *priv, int rts)
4189 {
4190         struct i802_bss *bss = priv;
4191         struct wpa_driver_nl80211_data *drv = bss->drv;
4192         struct nl_msg *msg;
4193         int ret = -ENOBUFS;
4194         u32 val;
4195
4196         msg = nlmsg_alloc();
4197         if (!msg)
4198                 return -ENOMEM;
4199
4200         if (rts >= 2347)
4201                 val = (u32) -1;
4202         else
4203                 val = rts;
4204
4205         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4206                     0, NL80211_CMD_SET_WIPHY, 0);
4207         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4208         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4209
4210         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4211         if (!ret)
4212                 return 0;
4213 nla_put_failure:
4214         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4215                    "%d (%s)", rts, ret, strerror(-ret));
4216         return ret;
4217 }
4218
4219
4220 static int i802_set_frag(void *priv, int frag)
4221 {
4222         struct i802_bss *bss = priv;
4223         struct wpa_driver_nl80211_data *drv = bss->drv;
4224         struct nl_msg *msg;
4225         int ret = -ENOBUFS;
4226         u32 val;
4227
4228         msg = nlmsg_alloc();
4229         if (!msg)
4230                 return -ENOMEM;
4231
4232         if (frag >= 2346)
4233                 val = (u32) -1;
4234         else
4235                 val = frag;
4236
4237         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4238                     0, NL80211_CMD_SET_WIPHY, 0);
4239         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4240         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4241
4242         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4243         if (!ret)
4244                 return 0;
4245 nla_put_failure:
4246         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4247                    "%d: %d (%s)", frag, ret, strerror(-ret));
4248         return ret;
4249 }
4250
4251
4252 static int i802_flush(void *priv)
4253 {
4254         struct i802_bss *bss = priv;
4255         struct wpa_driver_nl80211_data *drv = bss->drv;
4256         struct nl_msg *msg;
4257
4258         msg = nlmsg_alloc();
4259         if (!msg)
4260                 return -1;
4261
4262         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4263                     0, NL80211_CMD_DEL_STATION, 0);
4264
4265         /*
4266          * XXX: FIX! this needs to flush all VLANs too
4267          */
4268         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4269                     if_nametoindex(bss->ifname));
4270
4271         return send_and_recv_msgs(drv, msg, NULL, NULL);
4272  nla_put_failure:
4273         return -ENOBUFS;
4274 }
4275
4276
4277 static int get_sta_handler(struct nl_msg *msg, void *arg)
4278 {
4279         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4280         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4281         struct hostap_sta_driver_data *data = arg;
4282         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4283         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4284                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4285                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4286                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4287                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4288                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4289         };
4290
4291         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4292                   genlmsg_attrlen(gnlh, 0), NULL);
4293
4294         /*
4295          * TODO: validate the interface and mac address!
4296          * Otherwise, there's a race condition as soon as
4297          * the kernel starts sending station notifications.
4298          */
4299
4300         if (!tb[NL80211_ATTR_STA_INFO]) {
4301                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4302                 return NL_SKIP;
4303         }
4304         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4305                              tb[NL80211_ATTR_STA_INFO],
4306                              stats_policy)) {
4307                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4308                 return NL_SKIP;
4309         }
4310
4311         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4312                 data->inactive_msec =
4313                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4314         if (stats[NL80211_STA_INFO_RX_BYTES])
4315                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4316         if (stats[NL80211_STA_INFO_TX_BYTES])
4317                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4318         if (stats[NL80211_STA_INFO_RX_PACKETS])
4319                 data->rx_packets =
4320                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4321         if (stats[NL80211_STA_INFO_TX_PACKETS])
4322                 data->tx_packets =
4323                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4324
4325         return NL_SKIP;
4326 }
4327
4328 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4329                               const u8 *addr)
4330 {
4331         struct i802_bss *bss = priv;
4332         struct wpa_driver_nl80211_data *drv = bss->drv;
4333         struct nl_msg *msg;
4334
4335         os_memset(data, 0, sizeof(*data));
4336         msg = nlmsg_alloc();
4337         if (!msg)
4338                 return -ENOMEM;
4339
4340         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4341                     0, NL80211_CMD_GET_STATION, 0);
4342
4343         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4344         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4345
4346         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4347  nla_put_failure:
4348         return -ENOBUFS;
4349 }
4350
4351
4352 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4353                                     int cw_min, int cw_max, int burst_time)
4354 {
4355         struct i802_bss *bss = priv;
4356         struct wpa_driver_nl80211_data *drv = bss->drv;
4357         struct nl_msg *msg;
4358         struct nlattr *txq, *params;
4359
4360         msg = nlmsg_alloc();
4361         if (!msg)
4362                 return -1;
4363
4364         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4365                     0, NL80211_CMD_SET_WIPHY, 0);
4366
4367         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4368
4369         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4370         if (!txq)
4371                 goto nla_put_failure;
4372
4373         /* We are only sending parameters for a single TXQ at a time */
4374         params = nla_nest_start(msg, 1);
4375         if (!params)
4376                 goto nla_put_failure;
4377
4378         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4379         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4380          * 32 usec, so need to convert the value here. */
4381         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4382         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4383         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4384         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4385
4386         nla_nest_end(msg, params);
4387
4388         nla_nest_end(msg, txq);
4389
4390         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4391                 return 0;
4392  nla_put_failure:
4393         return -1;
4394 }
4395
4396
4397 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4398 {
4399         struct i802_bss *bss = priv;
4400         struct wpa_driver_nl80211_data *drv = bss->drv;
4401         struct nl_msg *msg;
4402
4403         msg = nlmsg_alloc();
4404         if (!msg)
4405                 return -ENOMEM;
4406
4407         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4408                     NL80211_CMD_SET_BSS, 0);
4409
4410         if (cts >= 0)
4411                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4412         if (preamble >= 0)
4413                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4414         if (slot >= 0)
4415                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4416
4417         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4418
4419         return send_and_recv_msgs(drv, msg, NULL, NULL);
4420  nla_put_failure:
4421         return -ENOBUFS;
4422 }
4423
4424
4425 static int i802_set_cts_protect(void *priv, int value)
4426 {
4427         return i802_set_bss(priv, value, -1, -1);
4428 }
4429
4430
4431 static int i802_set_preamble(void *priv, int value)
4432 {
4433         return i802_set_bss(priv, -1, value, -1);
4434 }
4435
4436
4437 static int i802_set_short_slot_time(void *priv, int value)
4438 {
4439         return i802_set_bss(priv, -1, -1, value);
4440 }
4441
4442
4443 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4444                              const char *ifname, int vlan_id)
4445 {
4446         struct i802_bss *bss = priv;
4447         struct wpa_driver_nl80211_data *drv = bss->drv;
4448         struct nl_msg *msg;
4449
4450         msg = nlmsg_alloc();
4451         if (!msg)
4452                 return -ENOMEM;
4453
4454         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4455                     0, NL80211_CMD_SET_STATION, 0);
4456
4457         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4458                     if_nametoindex(bss->ifname));
4459         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4460         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4461                     if_nametoindex(ifname));
4462
4463         return send_and_recv_msgs(drv, msg, NULL, NULL);
4464  nla_put_failure:
4465         return -ENOBUFS;
4466 }
4467
4468
4469 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4470 {
4471         struct i802_bss *bss = priv;
4472         struct wpa_driver_nl80211_data *drv = bss->drv;
4473         char name[IFNAMSIZ + 1];
4474
4475         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4476         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4477                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4478         if (val) {
4479                 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4480                                          NULL, 1) < 0)
4481                         return -1;
4482                 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4483                 return i802_set_sta_vlan(priv, addr, name, 0);
4484         } else {
4485                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4486                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4487                                                     name);
4488         }
4489 }
4490
4491
4492 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4493 {
4494         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4495         struct sockaddr_ll lladdr;
4496         unsigned char buf[3000];
4497         int len;
4498         socklen_t fromlen = sizeof(lladdr);
4499
4500         len = recvfrom(sock, buf, sizeof(buf), 0,
4501                        (struct sockaddr *)&lladdr, &fromlen);
4502         if (len < 0) {
4503                 perror("recv");
4504                 return;
4505         }
4506
4507         if (have_ifidx(drv, lladdr.sll_ifindex))
4508                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4509 }
4510
4511
4512 static int i802_get_inact_sec(void *priv, const u8 *addr)
4513 {
4514         struct hostap_sta_driver_data data;
4515         int ret;
4516
4517         data.inactive_msec = (unsigned long) -1;
4518         ret = i802_read_sta_data(priv, &data, addr);
4519         if (ret || data.inactive_msec == (unsigned long) -1)
4520                 return -1;
4521         return data.inactive_msec / 1000;
4522 }
4523
4524
4525 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4526 {
4527 #if 0
4528         /* TODO */
4529 #endif
4530         return 0;
4531 }
4532
4533
4534 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4535                            int reason)
4536 {
4537         struct i802_bss *bss = priv;
4538         struct ieee80211_mgmt mgmt;
4539
4540         memset(&mgmt, 0, sizeof(mgmt));
4541         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4542                                           WLAN_FC_STYPE_DEAUTH);
4543         memcpy(mgmt.da, addr, ETH_ALEN);
4544         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4545         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4546         mgmt.u.deauth.reason_code = host_to_le16(reason);
4547         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4548                                             IEEE80211_HDRLEN +
4549                                             sizeof(mgmt.u.deauth));
4550 }
4551
4552
4553 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4554                              int reason)
4555 {
4556         struct i802_bss *bss = priv;
4557         struct ieee80211_mgmt mgmt;
4558
4559         memset(&mgmt, 0, sizeof(mgmt));
4560         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4561                                           WLAN_FC_STYPE_DISASSOC);
4562         memcpy(mgmt.da, addr, ETH_ALEN);
4563         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4564         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4565         mgmt.u.disassoc.reason_code = host_to_le16(reason);
4566         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4567                                             IEEE80211_HDRLEN +
4568                                             sizeof(mgmt.u.disassoc));
4569 }
4570
4571
4572 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4573                              const char *brname, const char *ifname)
4574 {
4575         int ifindex;
4576         char in_br[IFNAMSIZ];
4577
4578         os_strlcpy(drv->brname, brname, IFNAMSIZ);
4579         ifindex = if_nametoindex(brname);
4580         if (ifindex == 0) {
4581                 /*
4582                  * Bridge was configured, but the bridge device does
4583                  * not exist. Try to add it now.
4584                  */
4585                 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4586                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4587                                    "bridge interface %s: %s",
4588                                    brname, strerror(errno));
4589                         return -1;
4590                 }
4591                 drv->added_bridge = 1;
4592                 add_ifidx(drv, if_nametoindex(brname));
4593         }
4594
4595         if (linux_br_get(in_br, ifname) == 0) {
4596                 if (os_strcmp(in_br, brname) == 0)
4597                         return 0; /* already in the bridge */
4598
4599                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4600                            "bridge %s", ifname, in_br);
4601                 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4602                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
4603                                    "remove interface %s from bridge "
4604                                    "%s: %s",
4605                                    ifname, brname, strerror(errno));
4606                         return -1;
4607                 }
4608         }
4609
4610         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4611                    ifname, brname);
4612         if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4613                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4614                            "into bridge %s: %s",
4615                            ifname, brname, strerror(errno));
4616                 return -1;
4617         }
4618         drv->added_if_into_bridge = 1;
4619
4620         return 0;
4621 }
4622
4623
4624 static void *i802_init(struct hostapd_data *hapd,
4625                        struct wpa_init_params *params)
4626 {
4627         struct wpa_driver_nl80211_data *drv;
4628         struct i802_bss *bss;
4629         size_t i;
4630         char brname[IFNAMSIZ];
4631         int ifindex, br_ifindex;
4632         int br_added = 0;
4633
4634         bss = wpa_driver_nl80211_init(hapd, params->ifname);
4635         if (bss == NULL)
4636                 return NULL;
4637
4638         drv = bss->drv;
4639         if (linux_br_get(brname, params->ifname) == 0) {
4640                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4641                            params->ifname, brname);
4642                 br_ifindex = if_nametoindex(brname);
4643         } else {
4644                 brname[0] = '\0';
4645                 br_ifindex = 0;
4646         }
4647
4648         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4649         drv->if_indices = drv->default_if_indices;
4650         for (i = 0; i < params->num_bridge; i++) {
4651                 if (params->bridge[i]) {
4652                         ifindex = if_nametoindex(params->bridge[i]);
4653                         if (ifindex)
4654                                 add_ifidx(drv, ifindex);
4655                         if (ifindex == br_ifindex)
4656                                 br_added = 1;
4657                 }
4658         }
4659         if (!br_added && br_ifindex &&
4660             (params->num_bridge == 0 || !params->bridge[0]))
4661                 add_ifidx(drv, br_ifindex);
4662
4663         /* start listening for EAPOL on the default AP interface */
4664         add_ifidx(drv, drv->ifindex);
4665
4666         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
4667                 goto failed;
4668
4669         if (params->bssid) {
4670                 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
4671                                        params->bssid))
4672                         goto failed;
4673         }
4674
4675         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
4676                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4677                            "into AP mode", bss->ifname);
4678                 goto failed;
4679         }
4680
4681         if (params->num_bridge && params->bridge[0] &&
4682             i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4683                 goto failed;
4684
4685         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4686                 goto failed;
4687
4688         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4689         if (drv->eapol_sock < 0) {
4690                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4691                 goto failed;
4692         }
4693
4694         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4695         {
4696                 printf("Could not register read socket for eapol\n");
4697                 goto failed;
4698         }
4699
4700         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
4701                 goto failed;
4702
4703         return bss;
4704
4705 failed:
4706         nl80211_remove_monitor_interface(drv);
4707         if (drv->ioctl_sock >= 0)
4708                 close(drv->ioctl_sock);
4709
4710         genl_family_put(drv->nl80211);
4711         nl_cache_free(drv->nl_cache);
4712         nl_handle_destroy(drv->nl_handle);
4713         nl_cb_put(drv->nl_cb);
4714
4715         os_free(drv);
4716         return NULL;
4717 }
4718
4719
4720 static void i802_deinit(void *priv)
4721 {
4722         wpa_driver_nl80211_deinit(priv);
4723 }
4724
4725 #endif /* HOSTAPD */
4726
4727
4728 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4729         enum wpa_driver_if_type type)
4730 {
4731         switch (type) {
4732         case WPA_IF_STATION:
4733                 return NL80211_IFTYPE_STATION;
4734         case WPA_IF_AP_VLAN:
4735                 return NL80211_IFTYPE_AP_VLAN;
4736         case WPA_IF_AP_BSS:
4737                 return NL80211_IFTYPE_AP;
4738         }
4739         return -1;
4740 }
4741
4742
4743 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
4744                                      const char *ifname, const u8 *addr,
4745                                      void *bss_ctx, void **drv_priv)
4746 {
4747         struct i802_bss *bss = priv;
4748         struct wpa_driver_nl80211_data *drv = bss->drv;
4749         int ifidx;
4750 #ifdef HOSTAPD
4751         struct i802_bss *new_bss = NULL;
4752
4753         if (type == WPA_IF_AP_BSS) {
4754                 new_bss = os_zalloc(sizeof(*new_bss));
4755                 if (new_bss == NULL)
4756                         return -1;
4757         }
4758 #endif /* HOSTAPD */
4759
4760         ifidx = nl80211_create_iface(drv, ifname,
4761                                      wpa_driver_nl80211_if_type(type), addr,
4762                                      0);
4763         if (ifidx < 0) {
4764 #ifdef HOSTAPD
4765                 os_free(new_bss);
4766 #endif /* HOSTAPD */
4767                 return -1;
4768         }
4769
4770 #ifdef HOSTAPD
4771         if (type == WPA_IF_AP_BSS) {
4772                 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4773                         nl80211_remove_iface(drv, ifidx);
4774                         os_free(new_bss);
4775                         return -1;
4776                 }
4777                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4778                 new_bss->ifindex = ifidx;
4779                 new_bss->drv = drv;
4780                 new_bss->next = drv->first_bss.next;
4781                 drv->first_bss.next = new_bss;
4782                 if (drv_priv)
4783                         *drv_priv = new_bss;
4784         }
4785 #endif /* HOSTAPD */
4786
4787         return 0;
4788 }
4789
4790
4791 static int wpa_driver_nl80211_if_remove(void *priv,
4792                                         enum wpa_driver_if_type type,
4793                                         const char *ifname)
4794 {
4795         struct i802_bss *bss = priv;
4796         struct wpa_driver_nl80211_data *drv = bss->drv;
4797         int ifindex = if_nametoindex(ifname);
4798
4799         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4800                    __func__, type, ifname, ifindex);
4801         if (ifindex <= 0)
4802                 return -1;
4803         nl80211_remove_iface(drv, ifindex);
4804
4805 #ifdef HOSTAPD
4806         if (type != WPA_IF_AP_BSS)
4807                 return 0;
4808
4809         if (bss != &drv->first_bss) {
4810                 struct i802_bss *tbss = &drv->first_bss;
4811
4812                 while (tbss) {
4813                         if (tbss->next != bss)
4814                                 continue;
4815
4816                         tbss->next = bss->next;
4817                         os_free(bss);
4818                         break;
4819                 }
4820         }
4821 #endif /* HOSTAPD */
4822
4823         return 0;
4824 }
4825
4826
4827 static int cookie_handler(struct nl_msg *msg, void *arg)
4828 {
4829         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4830         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4831         u64 *cookie = arg;
4832         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4833                   genlmsg_attrlen(gnlh, 0), NULL);
4834         if (tb[NL80211_ATTR_COOKIE])
4835                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4836         return NL_SKIP;
4837 }
4838
4839
4840 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
4841                                           const u8 *dst, const u8 *src,
4842                                           const u8 *bssid,
4843                                           const u8 *data, size_t data_len)
4844 {
4845         struct i802_bss *bss = priv;
4846         struct wpa_driver_nl80211_data *drv = bss->drv;
4847         int ret = -1;
4848         struct nl_msg *msg;
4849         u8 *buf;
4850         struct ieee80211_hdr *hdr;
4851         u64 cookie;
4852
4853         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
4854                    drv->ifindex);
4855
4856         buf = os_zalloc(24 + data_len);
4857         if (buf == NULL)
4858                 return ret;
4859         os_memcpy(buf + 24, data, data_len);
4860         hdr = (struct ieee80211_hdr *) buf;
4861         hdr->frame_control =
4862                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
4863         os_memcpy(hdr->addr1, dst, ETH_ALEN);
4864         os_memcpy(hdr->addr2, src, ETH_ALEN);
4865         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
4866
4867         if (drv->nlmode == NL80211_IFTYPE_AP) {
4868                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
4869                 os_free(buf);
4870                 return ret;
4871         }
4872
4873         msg = nlmsg_alloc();
4874         if (!msg)
4875                 return -1;
4876
4877         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4878                     NL80211_CMD_ACTION, 0);
4879
4880         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4881         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4882         NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
4883         os_free(buf);
4884
4885         cookie = 0;
4886         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4887         msg = NULL;
4888         if (ret) {
4889                 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
4890                            "(%s)", ret, strerror(-ret));
4891                 goto nla_put_failure;
4892         }
4893         wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
4894                    "cookie 0x%llx", (long long unsigned int) cookie);
4895         drv->send_action_cookie = cookie;
4896         drv->pending_send_action = 1;
4897         ret = 0;
4898
4899 nla_put_failure:
4900         nlmsg_free(msg);
4901         return ret;
4902 }
4903
4904
4905 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4906                                                 unsigned int duration)
4907 {
4908         struct i802_bss *bss = priv;
4909         struct wpa_driver_nl80211_data *drv = bss->drv;
4910         struct nl_msg *msg;
4911         int ret;
4912         u64 cookie;
4913
4914         msg = nlmsg_alloc();
4915         if (!msg)
4916                 return -1;
4917
4918         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4919                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4920
4921         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4922         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4923         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4924
4925         cookie = 0;
4926         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4927         if (ret == 0) {
4928                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4929                            "0x%llx for freq=%u MHz duration=%u",
4930                            (long long unsigned int) cookie, freq, duration);
4931                 drv->remain_on_chan_cookie = cookie;
4932                 return 0;
4933         }
4934         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4935                    "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4936 nla_put_failure:
4937         return -1;
4938 }
4939
4940
4941 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4942 {
4943         struct i802_bss *bss = priv;
4944         struct wpa_driver_nl80211_data *drv = bss->drv;
4945         struct nl_msg *msg;
4946         int ret;
4947
4948         if (!drv->pending_remain_on_chan) {
4949                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4950                            "to cancel");
4951                 return -1;
4952         }
4953
4954         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4955                    "0x%llx",
4956                    (long long unsigned int) drv->remain_on_chan_cookie);
4957
4958         msg = nlmsg_alloc();
4959         if (!msg)
4960                 return -1;
4961
4962         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4963                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4964
4965         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4966         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4967
4968         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4969         if (ret == 0)
4970                 return 0;
4971         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4972                    "%d (%s)", ret, strerror(-ret));
4973 nla_put_failure:
4974         return -1;
4975 }
4976
4977
4978 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4979                                                         void *timeout_ctx)
4980 {
4981         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4982         if (drv->monitor_ifidx < 0)
4983                 return; /* monitor interface already removed */
4984
4985         if (drv->nlmode != NL80211_IFTYPE_STATION)
4986                 return; /* not in station mode anymore */
4987
4988         if (drv->probe_req_report)
4989                 return; /* reporting enabled */
4990
4991         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4992                    "Probe Request reporting needed anymore");
4993         nl80211_remove_monitor_interface(drv);
4994 }
4995
4996
4997 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4998 {
4999         struct i802_bss *bss = priv;
5000         struct wpa_driver_nl80211_data *drv = bss->drv;
5001
5002         if (drv->nlmode != NL80211_IFTYPE_STATION) {
5003                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5004                            "allowed in station mode (iftype=%d)",
5005                            drv->nlmode);
5006                 return -1;
5007         }
5008         drv->probe_req_report = report;
5009
5010         if (report) {
5011                 eloop_cancel_timeout(
5012                         wpa_driver_nl80211_probe_req_report_timeout,
5013                         drv, NULL);
5014                 if (drv->monitor_ifidx < 0 &&
5015                     nl80211_create_monitor_interface(drv))
5016                         return -1;
5017         } else {
5018                 /*
5019                  * It takes a while to remove the monitor interface, so try to
5020                  * avoid doing this if it is needed again shortly. Instead,
5021                  * schedule the interface to be removed later if no need for it
5022                  * is seen.
5023                  */
5024                 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5025                            "to be removed after 10 seconds of no use");
5026                 eloop_register_timeout(
5027                         10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5028                         drv, NULL);
5029         }
5030
5031         return 0;
5032 }
5033
5034
5035 static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr,
5036                                                    char *ifname)
5037 {
5038         struct i802_bss *bss = priv;
5039         struct wpa_driver_nl80211_data *drv = bss->drv;
5040
5041         if (ifname)
5042                 ifname[0] = '\0';
5043
5044         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, addr) < 0)
5045                 return -1;
5046
5047         if (addr[0] & 0x02) {
5048                 /* TODO: add support for generating multiple addresses */
5049                 addr[0] ^= 0x80;
5050         } else
5051                 addr[0] = 0x02; /* locally administered */
5052
5053         return 0;
5054 }
5055
5056
5057 static void wpa_driver_nl80211_release_interface_addr(void *priv,
5058                                                       const u8 *addr)
5059 {
5060         /* TODO: keep list of allocated address and release them here */
5061 }
5062
5063
5064 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5065                                      int ifindex, int disabled)
5066 {
5067         struct nl_msg *msg;
5068         struct nlattr *bands, *band;
5069         int ret;
5070
5071         msg = nlmsg_alloc();
5072         if (!msg)
5073                 return -1;
5074
5075         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5076                     NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5077         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5078
5079         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5080         if (!bands)
5081                 goto nla_put_failure;
5082
5083         /*
5084          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5085          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5086          * rates. All 5 GHz rates are left enabled.
5087          */
5088         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5089         if (!band)
5090                 goto nla_put_failure;
5091         NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5092                 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5093         nla_nest_end(msg, band);
5094
5095         nla_nest_end(msg, bands);
5096
5097         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5098         msg = NULL;
5099         if (ret) {
5100                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5101                            "(%s)", ret, strerror(-ret));
5102         }
5103
5104         return ret;
5105
5106 nla_put_failure:
5107         nlmsg_free(msg);
5108         return -1;
5109 }
5110
5111
5112 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5113 {
5114         struct i802_bss *bss = priv;
5115         struct wpa_driver_nl80211_data *drv = bss->drv;
5116         drv->disable_11b_rates = disabled;
5117         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5118 }
5119
5120
5121 static int wpa_driver_nl80211_deinit_ap(void *priv)
5122 {
5123         struct i802_bss *bss = priv;
5124         struct wpa_driver_nl80211_data *drv = bss->drv;
5125         if (drv->nlmode != NL80211_IFTYPE_AP)
5126                 return -1;
5127         wpa_driver_nl80211_del_beacon(drv);
5128         return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5129 }
5130
5131
5132 static void wpa_driver_nl80211_resume(void *priv)
5133 {
5134         struct i802_bss *bss = priv;
5135         struct wpa_driver_nl80211_data *drv = bss->drv;
5136         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5137                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5138                            "resume event");
5139         }
5140 }
5141
5142
5143 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5144                                   const u8 *ies, size_t ies_len)
5145 {
5146         struct i802_bss *bss = priv;
5147         struct wpa_driver_nl80211_data *drv = bss->drv;
5148         int ret;
5149         u8 *data, *pos;
5150         size_t data_len;
5151         u8 own_addr[ETH_ALEN];
5152
5153         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5154                 return -1;
5155
5156         if (action != 1) {
5157                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5158                            "action %d", action);
5159                 return -1;
5160         }
5161
5162         /*
5163          * Action frame payload:
5164          * Category[1] = 6 (Fast BSS Transition)
5165          * Action[1] = 1 (Fast BSS Transition Request)
5166          * STA Address
5167          * Target AP Address
5168          * FT IEs
5169          */
5170
5171         data_len = 2 + 2 * ETH_ALEN + ies_len;
5172         data = os_malloc(data_len);
5173         if (data == NULL)
5174                 return -1;
5175         pos = data;
5176         *pos++ = 0x06; /* FT Action category */
5177         *pos++ = action;
5178         os_memcpy(pos, own_addr, ETH_ALEN);
5179         pos += ETH_ALEN;
5180         os_memcpy(pos, target_ap, ETH_ALEN);
5181         pos += ETH_ALEN;
5182         os_memcpy(pos, ies, ies_len);
5183
5184         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5185                                              own_addr, drv->bssid,
5186                                              data, data_len);
5187         os_free(data);
5188
5189         return ret;
5190 }
5191
5192
5193 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5194         .name = "nl80211",
5195         .desc = "Linux nl80211/cfg80211",
5196         .get_bssid = wpa_driver_nl80211_get_bssid,
5197         .get_ssid = wpa_driver_nl80211_get_ssid,
5198         .set_key = wpa_driver_nl80211_set_key,
5199         .scan2 = wpa_driver_nl80211_scan,
5200         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5201         .deauthenticate = wpa_driver_nl80211_deauthenticate,
5202         .disassociate = wpa_driver_nl80211_disassociate,
5203         .authenticate = wpa_driver_nl80211_authenticate,
5204         .associate = wpa_driver_nl80211_associate,
5205         .init = wpa_driver_nl80211_init,
5206         .deinit = wpa_driver_nl80211_deinit,
5207         .get_capa = wpa_driver_nl80211_get_capa,
5208         .set_operstate = wpa_driver_nl80211_set_operstate,
5209         .set_supp_port = wpa_driver_nl80211_set_supp_port,
5210         .set_country = wpa_driver_nl80211_set_country,
5211         .set_beacon = wpa_driver_nl80211_set_beacon,
5212         .if_add = wpa_driver_nl80211_if_add,
5213         .if_remove = wpa_driver_nl80211_if_remove,
5214         .send_mlme = wpa_driver_nl80211_send_mlme,
5215         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5216         .sta_add = wpa_driver_nl80211_sta_add,
5217         .sta_remove = wpa_driver_nl80211_sta_remove,
5218         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5219         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5220 #ifdef HOSTAPD
5221         .hapd_init = i802_init,
5222         .hapd_deinit = i802_deinit,
5223         .get_seqnum = i802_get_seqnum,
5224         .flush = i802_flush,
5225         .read_sta_data = i802_read_sta_data,
5226         .sta_deauth = i802_sta_deauth,
5227         .sta_disassoc = i802_sta_disassoc,
5228         .get_inact_sec = i802_get_inact_sec,
5229         .sta_clear_stats = i802_sta_clear_stats,
5230         .set_freq = i802_set_freq,
5231         .set_rts = i802_set_rts,
5232         .set_frag = i802_set_frag,
5233         .set_rate_sets = i802_set_rate_sets,
5234         .set_cts_protect = i802_set_cts_protect,
5235         .set_preamble = i802_set_preamble,
5236         .set_short_slot_time = i802_set_short_slot_time,
5237         .set_tx_queue_params = i802_set_tx_queue_params,
5238         .set_sta_vlan = i802_set_sta_vlan,
5239         .set_wds_sta = i802_set_wds_sta,
5240 #endif /* HOSTAPD */
5241         .send_action = wpa_driver_nl80211_send_action,
5242         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5243         .cancel_remain_on_channel =
5244         wpa_driver_nl80211_cancel_remain_on_channel,
5245         .probe_req_report = wpa_driver_nl80211_probe_req_report,
5246         .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
5247         .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
5248         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5249         .deinit_ap = wpa_driver_nl80211_deinit_ap,
5250         .resume = wpa_driver_nl80211_resume,
5251         .send_ft_action = nl80211_send_ft_action,
5252 };