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 <linux/rtnetlink.h>
  26 #include <netpacket/packet.h>
  27 #include <linux/filter.h>
  28 #include "nl80211_copy.h"
  29
  30 #include "common.h"
  31 #include "eloop.h"
  32 #include "common/ieee802_11_defs.h"
  33 #include "netlink.h"
  34 #include "linux_ioctl.h"
  35 #include "radiotap.h"
  36 #include "radiotap_iter.h"
  37 #include "rfkill.h"
  38 #include "driver.h"
  39
  40 #ifdef CONFIG_LIBNL20
  41 /* libnl 2.0 compatibility code */
  42 #define nl_handle nl_sock
  43 #define nl80211_handle_alloc nl_socket_alloc_cb
  44 #define nl80211_handle_destroy nl_socket_free
  45 #else
  46 /*
  47  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  48  * but when you free a socket again it will mess up its bitmap and
  49  * and use the wrong number the next time it needs a socket ID.
  50  * Therefore, we wrap the handle alloc/destroy and add our own pid
  51  * accounting.
  52  */
  53 static uint32_t port_bitmap[32] = { 0 };
  54
  55 static struct nl_handle *nl80211_handle_alloc(void *cb)
  56 {
  57         struct nl_handle *handle;
  58         uint32_t pid = getpid() & 0x3FFFFF;
  59         int i;
  60
  61         handle = nl_handle_alloc_cb(cb);
  62
  63         for (i = 0; i < 1024; i++) {
  64                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  65                         continue;
  66                 port_bitmap[i / 32] |= 1 << (i % 32);
  67                 pid += i << 22;
  68                 break;
  69         }
  70
  71         nl_socket_set_local_port(handle, pid);
  72
  73         return handle;
  74 }
  75
  76 static void nl80211_handle_destroy(struct nl_handle *handle)
  77 {
  78         uint32_t port = nl_socket_get_local_port(handle);
  79
  80         port >>= 22;
  81         port_bitmap[port / 32] &= ~(1 << (port % 32));
  82
  83         nl_handle_destroy(handle);
  84 }
  85 #endif /* CONFIG_LIBNL20 */
  86
  87
  88 #ifndef IFF_LOWER_UP
  89 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
  90 #endif
  91 #ifndef IFF_DORMANT
  92 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
  93 #endif
  94
  95 #ifndef IF_OPER_DORMANT
  96 #define IF_OPER_DORMANT 5
  97 #endif
  98 #ifndef IF_OPER_UP
  99 #define IF_OPER_UP 6
 100 #endif
 101
 102 struct i802_bss {
 103         struct wpa_driver_nl80211_data *drv;
 104         struct i802_bss *next;
 105         int ifindex;
 106         char ifname[IFNAMSIZ + 1];
 107         unsigned int beacon_set:1;
 108 };
 109
 110 struct wpa_driver_nl80211_data {
 111         void *ctx;
 112         struct netlink_data *netlink;
 113         int ioctl_sock; /* socket for ioctl() use */
 114         char brname[IFNAMSIZ];
 115         int ifindex;
 116         int if_removed;
 117         int if_disabled;
 118         struct rfkill_data *rfkill;
 119         struct wpa_driver_capa capa;
 120         int has_capability;
 121
 122         int operstate;
 123
 124         int scan_complete_events;
 125
 126         struct nl_handle *nl_handle;
 127         struct nl_handle *nl_handle_event;
 128         struct nl_handle *nl_handle_preq;
 129         struct nl_cache *nl_cache;
 130         struct nl_cache *nl_cache_event;
 131         struct nl_cache *nl_cache_preq;
 132         struct nl_cb *nl_cb;
 133         struct genl_family *nl80211;
 134
 135         u8 auth_bssid[ETH_ALEN];
 136         u8 bssid[ETH_ALEN];
 137         int associated;
 138         u8 ssid[32];
 139         size_t ssid_len;
 140         int nlmode;
 141         int ap_scan_as_station;
 142         unsigned int assoc_freq;
 143
 144         int monitor_sock;
 145         int monitor_ifidx;
 146         int disable_11b_rates;
 147
 148         unsigned int pending_remain_on_chan:1;
 149         unsigned int added_bridge:1;
 150         unsigned int added_if_into_bridge:1;
 151
 152         u64 remain_on_chan_cookie;
 153         u64 send_action_cookie;
 154
 155         unsigned int last_mgmt_freq;
 156
 157         struct wpa_driver_scan_filter *filter_ssids;
 158         size_t num_filter_ssids;
 159
 160         struct i802_bss first_bss;
 161
 162 #ifdef HOSTAPD
 163         int eapol_sock; /* socket for EAPOL frames */
 164
 165         int default_if_indices[16];
 166         int *if_indices;
 167         int num_if_indices;
 168
 169         int last_freq;
 170         int last_freq_ht;
 171 #endif /* HOSTAPD */
 172 };
 173
 174
 175 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 176                                             void *timeout_ctx);
 177 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
 178 static int
 179 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 180 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 181                                    const u8 *addr, int cmd, u16 reason_code,
 182                                    int local_state_change);
 183 static void nl80211_remove_monitor_interface(
 184         struct wpa_driver_nl80211_data *drv);
 185 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
 186                                   unsigned int freq, const u8 *buf,
 187                                   size_t buf_len, u64 *cookie);
 188 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
 189
 190 #ifdef HOSTAPD
 191 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 192 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 193 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 194 static int wpa_driver_nl80211_if_remove(void *priv,
 195                                         enum wpa_driver_if_type type,
 196                                         const char *ifname);
 197 #else /* HOSTAPD */
 198 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 199 {
 200         return 0;
 201 }
 202 #endif /* HOSTAPD */
 203
 204 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 205 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 206                                      int ifindex, int disabled);
 207
 208
 209 /* nl80211 code */
 210 static int ack_handler(struct nl_msg *msg, void *arg)
 211 {
 212         int *err = arg;
 213         *err = 0;
 214         return NL_STOP;
 215 }
 216
 217 static int finish_handler(struct nl_msg *msg, void *arg)
 218 {
 219         int *ret = arg;
 220         *ret = 0;
 221         return NL_SKIP;
 222 }
 223
 224 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 225                          void *arg)
 226 {
 227         int *ret = arg;
 228         *ret = err->error;
 229         return NL_SKIP;
 230 }
 231
 232
 233 static int no_seq_check(struct nl_msg *msg, void *arg)
 234 {
 235         return NL_OK;
 236 }
 237
 238
 239 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
 240                          struct nl_handle *nl_handle, struct nl_msg *msg,
 241                          int (*valid_handler)(struct nl_msg *, void *),
 242                          void *valid_data)
 243 {
 244         struct nl_cb *cb;
 245         int err = -ENOMEM;
 246
 247         cb = nl_cb_clone(drv->nl_cb);
 248         if (!cb)
 249                 goto out;
 250
 251         err = nl_send_auto_complete(nl_handle, msg);
 252         if (err < 0)
 253                 goto out;
 254
 255         err = 1;
 256
 257         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 258         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 259         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 260
 261         if (valid_handler)
 262                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 263                           valid_handler, valid_data);
 264
 265         while (err > 0)
 266                 nl_recvmsgs(nl_handle, cb);
 267  out:
 268         nl_cb_put(cb);
 269         nlmsg_free(msg);
 270         return err;
 271 }
 272
 273
 274 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 275                               struct nl_msg *msg,
 276                               int (*valid_handler)(struct nl_msg *, void *),
 277                               void *valid_data)
 278 {
 279         return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
 280                              valid_data);
 281 }
 282
 283
 284 struct family_data {
 285         const char *group;
 286         int id;
 287 };
 288
 289
 290 static int family_handler(struct nl_msg *msg, void *arg)
 291 {
 292         struct family_data *res = arg;
 293         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 294         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 295         struct nlattr *mcgrp;
 296         int i;
 297
 298         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 299                   genlmsg_attrlen(gnlh, 0), NULL);
 300         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 301                 return NL_SKIP;
 302
 303         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 304                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 305                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 306                           nla_len(mcgrp), NULL);
 307                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 308                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 309                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 310                                res->group,
 311                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 312                         continue;
 313                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 314                 break;
 315         };
 316
 317         return NL_SKIP;
 318 }
 319
 320
 321 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 322                                const char *family, const char *group)
 323 {
 324         struct nl_msg *msg;
 325         int ret = -1;
 326         struct family_data res = { group, -ENOENT };
 327
 328         msg = nlmsg_alloc();
 329         if (!msg)
 330                 return -ENOMEM;
 331         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 332                     0, 0, CTRL_CMD_GETFAMILY, 0);
 333         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 334
 335         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 336         msg = NULL;
 337         if (ret == 0)
 338                 ret = res.id;
 339
 340 nla_put_failure:
 341         nlmsg_free(msg);
 342         return ret;
 343 }
 344
 345
 346 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 347 {
 348         struct i802_bss *bss = priv;
 349         struct wpa_driver_nl80211_data *drv = bss->drv;
 350         if (!drv->associated)
 351                 return -1;
 352         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 353         return 0;
 354 }
 355
 356
 357 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 358 {
 359         struct i802_bss *bss = priv;
 360         struct wpa_driver_nl80211_data *drv = bss->drv;
 361         if (!drv->associated)
 362                 return -1;
 363         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 364         return drv->ssid_len;
 365 }
 366
 367
 368 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 369                                           char *buf, size_t len, int del)
 370 {
 371         union wpa_event_data event;
 372
 373         os_memset(&event, 0, sizeof(event));
 374         if (len > sizeof(event.interface_status.ifname))
 375                 len = sizeof(event.interface_status.ifname) - 1;
 376         os_memcpy(event.interface_status.ifname, buf, len);
 377         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 378                 EVENT_INTERFACE_ADDED;
 379
 380         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 381                    del ? "DEL" : "NEW",
 382                    event.interface_status.ifname,
 383                    del ? "removed" : "added");
 384
 385         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 386                 if (del)
 387                         drv->if_removed = 1;
 388                 else
 389                         drv->if_removed = 0;
 390         }
 391
 392         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 393 }
 394
 395
 396 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 397                                          u8 *buf, size_t len)
 398 {
 399         int attrlen, rta_len;
 400         struct rtattr *attr;
 401
 402         attrlen = len;
 403         attr = (struct rtattr *) buf;
 404
 405         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 406         while (RTA_OK(attr, attrlen)) {
 407                 if (attr->rta_type == IFLA_IFNAME) {
 408                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 409                             == 0)
 410                                 return 1;
 411                         else
 412                                 break;
 413                 }
 414                 attr = RTA_NEXT(attr, attrlen);
 415         }
 416
 417         return 0;
 418 }
 419
 420
 421 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 422                                           int ifindex, u8 *buf, size_t len)
 423 {
 424         if (drv->ifindex == ifindex)
 425                 return 1;
 426
 427         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 428                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 429                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 430                            "interface");
 431                 wpa_driver_nl80211_finish_drv_init(drv);
 432                 return 1;
 433         }
 434
 435         return 0;
 436 }
 437
 438
 439 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 440                                                  struct ifinfomsg *ifi,
 441                                                  u8 *buf, size_t len)
 442 {
 443         struct wpa_driver_nl80211_data *drv = ctx;
 444         int attrlen, rta_len;
 445         struct rtattr *attr;
 446         u32 brid = 0;
 447
 448         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) &&
 449             !have_ifidx(drv, ifi->ifi_index)) {
 450                 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
 451                            "ifindex %d", ifi->ifi_index);
 452                 return;
 453         }
 454
 455         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 456                    "(%s%s%s%s)",
 457                    drv->operstate, ifi->ifi_flags,
 458                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 459                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 460                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 461                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 462
 463         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 464                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 465                 drv->if_disabled = 1;
 466                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
 467         }
 468
 469         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 470                 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
 471                 drv->if_disabled = 0;
 472                 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
 473         }
 474
 475         /*
 476          * Some drivers send the association event before the operup event--in
 477          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 478          * fails. This will hit us when wpa_supplicant does not need to do
 479          * IEEE 802.1X authentication
 480          */
 481         if (drv->operstate == 1 &&
 482             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 483             !(ifi->ifi_flags & IFF_RUNNING))
 484                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 485                                        -1, IF_OPER_UP);
 486
 487         attrlen = len;
 488         attr = (struct rtattr *) buf;
 489         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 490         while (RTA_OK(attr, attrlen)) {
 491                 if (attr->rta_type == IFLA_IFNAME) {
 492                         wpa_driver_nl80211_event_link(
 493                                 drv,
 494                                 ((char *) attr) + rta_len,
 495                                 attr->rta_len - rta_len, 0);
 496                 } else if (attr->rta_type == IFLA_MASTER)
 497                         brid = nla_get_u32((struct nlattr *) attr);
 498                 attr = RTA_NEXT(attr, attrlen);
 499         }
 500
 501 #ifdef HOSTAPD
 502         if (ifi->ifi_family == AF_BRIDGE && brid) {
 503                 /* device has been added to bridge */
 504                 char namebuf[IFNAMSIZ];
 505                 if_indextoname(brid, namebuf);
 506                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
 507                            brid, namebuf);
 508                 add_ifidx(drv, brid);
 509         }
 510 #endif /* HOSTAPD */
 511 }
 512
 513
 514 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 515                                                  struct ifinfomsg *ifi,
 516                                                  u8 *buf, size_t len)
 517 {
 518         struct wpa_driver_nl80211_data *drv = ctx;
 519         int attrlen, rta_len;
 520         struct rtattr *attr;
 521         u32 brid = 0;
 522
 523         attrlen = len;
 524         attr = (struct rtattr *) buf;
 525
 526         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 527         while (RTA_OK(attr, attrlen)) {
 528                 if (attr->rta_type == IFLA_IFNAME) {
 529                         wpa_driver_nl80211_event_link(
 530                                 drv,
 531                                 ((char *) attr) + rta_len,
 532                                 attr->rta_len - rta_len, 1);
 533                 } else if (attr->rta_type == IFLA_MASTER)
 534                         brid = nla_get_u32((struct nlattr *) attr);
 535                 attr = RTA_NEXT(attr, attrlen);
 536         }
 537
 538 #ifdef HOSTAPD
 539         if (ifi->ifi_family == AF_BRIDGE && brid) {
 540                 /* device has been removed from bridge */
 541                 char namebuf[IFNAMSIZ];
 542                 if_indextoname(brid, namebuf);
 543                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
 544                            "%s", brid, namebuf);
 545                 del_ifidx(drv, brid);
 546         }
 547 #endif /* HOSTAPD */
 548 }
 549
 550
 551 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 552                             const u8 *frame, size_t len)
 553 {
 554         const struct ieee80211_mgmt *mgmt;
 555         union wpa_event_data event;
 556
 557         mgmt = (const struct ieee80211_mgmt *) frame;
 558         if (len < 24 + sizeof(mgmt->u.auth)) {
 559                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 560                            "frame");
 561                 return;
 562         }
 563
 564         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 565         os_memset(&event, 0, sizeof(event));
 566         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 567         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 568         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 569         if (len > 24 + sizeof(mgmt->u.auth)) {
 570                 event.auth.ies = mgmt->u.auth.variable;
 571                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 572         }
 573
 574         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 575 }
 576
 577
 578 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 579                             const u8 *frame, size_t len)
 580 {
 581         const struct ieee80211_mgmt *mgmt;
 582         union wpa_event_data event;
 583         u16 status;
 584
 585         mgmt = (const struct ieee80211_mgmt *) frame;
 586         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 587                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 588                            "frame");
 589                 return;
 590         }
 591
 592         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 593         if (status != WLAN_STATUS_SUCCESS) {
 594                 os_memset(&event, 0, sizeof(event));
 595                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 596                         event.assoc_reject.resp_ies =
 597                                 (u8 *) mgmt->u.assoc_resp.variable;
 598                         event.assoc_reject.resp_ies_len =
 599                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 600                 }
 601                 event.assoc_reject.status_code = status;
 602
 603                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 604                 return;
 605         }
 606
 607         drv->associated = 1;
 608         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 609
 610         os_memset(&event, 0, sizeof(event));
 611         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 612                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 613                 event.assoc_info.resp_ies_len =
 614                         len - 24 - sizeof(mgmt->u.assoc_resp);
 615         }
 616
 617         event.assoc_info.freq = drv->assoc_freq;
 618
 619         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 620 }
 621
 622
 623 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 624                                enum nl80211_commands cmd, struct nlattr *status,
 625                                struct nlattr *addr, struct nlattr *req_ie,
 626                                struct nlattr *resp_ie)
 627 {
 628         union wpa_event_data event;
 629
 630         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 631                 /*
 632                  * Avoid reporting two association events that would confuse
 633                  * the core code.
 634                  */
 635                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 636                            "when using userspace SME", cmd);
 637                 return;
 638         }
 639
 640         os_memset(&event, 0, sizeof(event));
 641         if (cmd == NL80211_CMD_CONNECT &&
 642             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 643                 if (resp_ie) {
 644                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 645                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 646                 }
 647                 event.assoc_reject.status_code = nla_get_u16(status);
 648                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 649                 return;
 650         }
 651
 652         drv->associated = 1;
 653         if (addr)
 654                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 655
 656         if (req_ie) {
 657                 event.assoc_info.req_ies = nla_data(req_ie);
 658                 event.assoc_info.req_ies_len = nla_len(req_ie);
 659         }
 660         if (resp_ie) {
 661                 event.assoc_info.resp_ies = nla_data(resp_ie);
 662                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 663         }
 664
 665         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 666 }
 667
 668
 669 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 670                                enum nl80211_commands cmd, struct nlattr *addr)
 671 {
 672         union wpa_event_data event;
 673         enum wpa_event_type ev;
 674
 675         if (nla_len(addr) != ETH_ALEN)
 676                 return;
 677
 678         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 679                    cmd, MAC2STR((u8 *) nla_data(addr)));
 680
 681         if (cmd == NL80211_CMD_AUTHENTICATE)
 682                 ev = EVENT_AUTH_TIMED_OUT;
 683         else if (cmd == NL80211_CMD_ASSOCIATE)
 684                 ev = EVENT_ASSOC_TIMED_OUT;
 685         else
 686                 return;
 687
 688         os_memset(&event, 0, sizeof(event));
 689         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 690         wpa_supplicant_event(drv->ctx, ev, &event);
 691 }
 692
 693
 694 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
 695                             struct nlattr *freq, const u8 *frame, size_t len)
 696 {
 697         const struct ieee80211_mgmt *mgmt;
 698         union wpa_event_data event;
 699         u16 fc, stype;
 700
 701         mgmt = (const struct ieee80211_mgmt *) frame;
 702         if (len < 24) {
 703                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
 704                 return;
 705         }
 706
 707         fc = le_to_host16(mgmt->frame_control);
 708         stype = WLAN_FC_GET_STYPE(fc);
 709
 710         os_memset(&event, 0, sizeof(event));
 711         if (freq) {
 712                 event.rx_action.freq = nla_get_u32(freq);
 713                 drv->last_mgmt_freq = event.rx_action.freq;
 714         }
 715         if (stype == WLAN_FC_STYPE_ACTION) {
 716                 event.rx_action.da = mgmt->da;
 717                 event.rx_action.sa = mgmt->sa;
 718                 event.rx_action.bssid = mgmt->bssid;
 719                 event.rx_action.category = mgmt->u.action.category;
 720                 event.rx_action.data = &mgmt->u.action.category + 1;
 721                 event.rx_action.len = frame + len - event.rx_action.data;
 722                 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
 723         } else {
 724                 event.rx_mgmt.frame = frame;
 725                 event.rx_mgmt.frame_len = len;
 726                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 727         }
 728 }
 729
 730
 731 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
 732                                         struct nlattr *cookie, const u8 *frame,
 733                                         size_t len, struct nlattr *ack)
 734 {
 735         union wpa_event_data event;
 736         const struct ieee80211_hdr *hdr;
 737         u16 fc;
 738         u64 cookie_val;
 739
 740         if (!cookie)
 741                 return;
 742
 743         cookie_val = nla_get_u64(cookie);
 744         wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
 745                    "(ack=%d)",
 746                    (long long unsigned int) cookie_val,
 747                    cookie_val == drv->send_action_cookie ?
 748                    " (match)" : " (unknown)", ack != NULL);
 749         if (cookie_val != drv->send_action_cookie)
 750                 return;
 751
 752         hdr = (const struct ieee80211_hdr *) frame;
 753         fc = le_to_host16(hdr->frame_control);
 754
 755         os_memset(&event, 0, sizeof(event));
 756         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 757         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 758         event.tx_status.dst = hdr->addr1;
 759         event.tx_status.data = frame;
 760         event.tx_status.data_len = len;
 761         event.tx_status.ack = ack != NULL;
 762         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
 763 }
 764
 765
 766 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
 767                                        enum wpa_event_type type,
 768                                        const u8 *frame, size_t len)
 769 {
 770         const struct ieee80211_mgmt *mgmt;
 771         union wpa_event_data event;
 772         const u8 *bssid = NULL;
 773         u16 reason_code = 0;
 774
 775         mgmt = (const struct ieee80211_mgmt *) frame;
 776         if (len >= 24) {
 777                 bssid = mgmt->bssid;
 778
 779                 if (drv->associated != 0 &&
 780                     os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
 781                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
 782                         /*
 783                          * We have presumably received this deauth as a
 784                          * response to a clear_state_mismatch() outgoing
 785                          * deauth.  Don't let it take us offline!
 786                          */
 787                         wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
 788                                    "from Unknown BSSID " MACSTR " -- ignoring",
 789                                    MAC2STR(bssid));
 790                         return;
 791                 }
 792         }
 793
 794         drv->associated = 0;
 795         os_memset(&event, 0, sizeof(event));
 796
 797         /* Note: Same offset for Reason Code in both frame subtypes */
 798         if (len >= 24 + sizeof(mgmt->u.deauth))
 799                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
 800
 801         if (type == EVENT_DISASSOC) {
 802                 event.disassoc_info.addr = bssid;
 803                 event.disassoc_info.reason_code = reason_code;
 804                 if (frame + len > mgmt->u.disassoc.variable) {
 805                         event.disassoc_info.ie = mgmt->u.disassoc.variable;
 806                         event.disassoc_info.ie_len = frame + len -
 807                                 mgmt->u.disassoc.variable;
 808                 }
 809         } else {
 810                 event.deauth_info.addr = bssid;
 811                 event.deauth_info.reason_code = reason_code;
 812                 if (frame + len > mgmt->u.deauth.variable) {
 813                         event.deauth_info.ie = mgmt->u.deauth.variable;
 814                         event.deauth_info.ie_len = frame + len -
 815                                 mgmt->u.deauth.variable;
 816                 }
 817         }
 818
 819         wpa_supplicant_event(drv->ctx, type, &event);
 820 }
 821
 822
 823 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 824                        enum nl80211_commands cmd, struct nlattr *frame,
 825                        struct nlattr *addr, struct nlattr *timed_out,
 826                        struct nlattr *freq, struct nlattr *ack,
 827                        struct nlattr *cookie)
 828 {
 829         if (timed_out && addr) {
 830                 mlme_timeout_event(drv, cmd, addr);
 831                 return;
 832         }
 833
 834         if (frame == NULL) {
 835                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 836                            "data", cmd);
 837                 return;
 838         }
 839
 840         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 841         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 842                     nla_data(frame), nla_len(frame));
 843
 844         switch (cmd) {
 845         case NL80211_CMD_AUTHENTICATE:
 846                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 847                 break;
 848         case NL80211_CMD_ASSOCIATE:
 849                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 850                 break;
 851         case NL80211_CMD_DEAUTHENTICATE:
 852                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
 853                                            nla_data(frame), nla_len(frame));
 854                 break;
 855         case NL80211_CMD_DISASSOCIATE:
 856                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
 857                                            nla_data(frame), nla_len(frame));
 858                 break;
 859         case NL80211_CMD_FRAME:
 860                 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
 861                 break;
 862         case NL80211_CMD_FRAME_TX_STATUS:
 863                 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
 864                                             nla_len(frame), ack);
 865                 break;
 866         default:
 867                 break;
 868         }
 869 }
 870
 871
 872 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 873                                            struct nlattr *tb[])
 874 {
 875         union wpa_event_data data;
 876
 877         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 878         os_memset(&data, 0, sizeof(data));
 879         if (tb[NL80211_ATTR_MAC]) {
 880                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 881                             nla_data(tb[NL80211_ATTR_MAC]),
 882                             nla_len(tb[NL80211_ATTR_MAC]));
 883                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 884         }
 885         if (tb[NL80211_ATTR_KEY_SEQ]) {
 886                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 887                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 888                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 889         }
 890         if (tb[NL80211_ATTR_KEY_TYPE]) {
 891                 enum nl80211_key_type key_type =
 892                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 893                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 894                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 895                         data.michael_mic_failure.unicast = 1;
 896         } else
 897                 data.michael_mic_failure.unicast = 1;
 898
 899         if (tb[NL80211_ATTR_KEY_IDX]) {
 900                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 901                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 902         }
 903
 904         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 905 }
 906
 907
 908 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 909                                  struct nlattr *tb[])
 910 {
 911         if (tb[NL80211_ATTR_MAC] == NULL) {
 912                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 913                            "event");
 914                 return;
 915         }
 916         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 917         drv->associated = 1;
 918         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 919                    MAC2STR(drv->bssid));
 920
 921         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 922 }
 923
 924
 925 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 926                                          int cancel_event, struct nlattr *tb[])
 927 {
 928         unsigned int freq, chan_type, duration;
 929         union wpa_event_data data;
 930         u64 cookie;
 931
 932         if (tb[NL80211_ATTR_WIPHY_FREQ])
 933                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 934         else
 935                 freq = 0;
 936
 937         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 938                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 939         else
 940                 chan_type = 0;
 941
 942         if (tb[NL80211_ATTR_DURATION])
 943                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 944         else
 945                 duration = 0;
 946
 947         if (tb[NL80211_ATTR_COOKIE])
 948                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 949         else
 950                 cookie = 0;
 951
 952         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 953                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 954                    cancel_event, freq, chan_type, duration,
 955                    (long long unsigned int) cookie,
 956                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 957
 958         if (cookie != drv->remain_on_chan_cookie)
 959                 return; /* not for us */
 960
 961         drv->pending_remain_on_chan = !cancel_event;
 962
 963         os_memset(&data, 0, sizeof(data));
 964         data.remain_on_channel.freq = freq;
 965         data.remain_on_channel.duration = duration;
 966         wpa_supplicant_event(drv->ctx, cancel_event ?
 967                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 968                              EVENT_REMAIN_ON_CHANNEL, &data);
 969 }
 970
 971
 972 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 973                             struct nlattr *tb[])
 974 {
 975         union wpa_event_data event;
 976         struct nlattr *nl;
 977         int rem;
 978         struct scan_info *info;
 979 #define MAX_REPORT_FREQS 50
 980         int freqs[MAX_REPORT_FREQS];
 981         int num_freqs = 0;
 982
 983         os_memset(&event, 0, sizeof(event));
 984         info = &event.scan_info;
 985         info->aborted = aborted;
 986
 987         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 988                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 989                         struct wpa_driver_scan_ssid *s =
 990                                 &info->ssids[info->num_ssids];
 991                         s->ssid = nla_data(nl);
 992                         s->ssid_len = nla_len(nl);
 993                         info->num_ssids++;
 994                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 995                                 break;
 996                 }
 997         }
 998         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
 999                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1000                 {
1001                         freqs[num_freqs] = nla_get_u32(nl);
1002                         num_freqs++;
1003                         if (num_freqs == MAX_REPORT_FREQS - 1)
1004                                 break;
1005                 }
1006                 info->freqs = freqs;
1007                 info->num_freqs = num_freqs;
1008         }
1009         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1010 }
1011
1012
1013 static int get_link_signal(struct nl_msg *msg, void *arg)
1014 {
1015         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1016         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1017         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1018         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1019                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1020         };
1021         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1022         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1023                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1024                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1025                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1026                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1027         };
1028         struct signal_change *sig_change = arg;
1029
1030         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1031                   genlmsg_attrlen(gnlh, 0), NULL);
1032         if (!tb[NL80211_ATTR_STA_INFO] ||
1033             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1034                              tb[NL80211_ATTR_STA_INFO], policy))
1035                 return NL_SKIP;
1036         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1037                 return NL_SKIP;
1038
1039         sig_change->current_signal =
1040                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1041
1042         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1043                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1044                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1045                                      rate_policy)) {
1046                         sig_change->current_txrate = 0;
1047                 } else {
1048                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1049                                 sig_change->current_txrate =
1050                                         nla_get_u16(rinfo[
1051                                              NL80211_RATE_INFO_BITRATE]) * 100;
1052                         }
1053                 }
1054         }
1055
1056         return NL_SKIP;
1057 }
1058
1059
1060 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1061                                    struct signal_change *sig)
1062 {
1063         struct nl_msg *msg;
1064
1065         sig->current_signal = -9999;
1066         sig->current_txrate = 0;
1067
1068         msg = nlmsg_alloc();
1069         if (!msg)
1070                 return -ENOMEM;
1071
1072         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1073                     0, NL80211_CMD_GET_STATION, 0);
1074
1075         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1076         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1077
1078         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1079  nla_put_failure:
1080         return -ENOBUFS;
1081 }
1082
1083
1084 static int get_link_noise(struct nl_msg *msg, void *arg)
1085 {
1086         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1087         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1088         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1089         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1090                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1091                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1092         };
1093         struct signal_change *sig_change = arg;
1094
1095         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1096                   genlmsg_attrlen(gnlh, 0), NULL);
1097
1098         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1099                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1100                 return NL_SKIP;
1101         }
1102
1103         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1104                              tb[NL80211_ATTR_SURVEY_INFO],
1105                              survey_policy)) {
1106                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1107                            "attributes!");
1108                 return NL_SKIP;
1109         }
1110
1111         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1112                 return NL_SKIP;
1113
1114         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1115             sig_change->frequency)
1116                 return NL_SKIP;
1117
1118         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1119                 return NL_SKIP;
1120
1121         sig_change->current_noise =
1122                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1123
1124         return NL_SKIP;
1125 }
1126
1127
1128 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1129                                   struct signal_change *sig_change)
1130 {
1131         struct nl_msg *msg;
1132
1133         sig_change->current_noise = 9999;
1134         sig_change->frequency = drv->assoc_freq;
1135
1136         msg = nlmsg_alloc();
1137         if (!msg)
1138                 return -ENOMEM;
1139
1140         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1141                     NLM_F_DUMP, NL80211_CMD_GET_SURVEY, 0);
1142
1143         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1144
1145         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1146  nla_put_failure:
1147         return -ENOBUFS;
1148 }
1149
1150
1151 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1152                               struct nlattr *tb[])
1153 {
1154         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1155                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1156                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1157                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1158         };
1159         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1160         enum nl80211_cqm_rssi_threshold_event event;
1161         union wpa_event_data ed;
1162         struct signal_change sig;
1163         int res;
1164
1165         if (tb[NL80211_ATTR_CQM] == NULL ||
1166             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1167                              cqm_policy)) {
1168                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1169                 return;
1170         }
1171
1172         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1173                 return;
1174         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1175
1176         os_memset(&ed, 0, sizeof(ed));
1177
1178         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1179                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1180                            "event: RSSI high");
1181                 ed.signal_change.above_threshold = 1;
1182         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1183                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1184                            "event: RSSI low");
1185                 ed.signal_change.above_threshold = 0;
1186         } else
1187                 return;
1188
1189         res = nl80211_get_link_signal(drv, &sig);
1190         if (res == 0) {
1191                 ed.signal_change.current_signal = sig.current_signal;
1192                 ed.signal_change.current_txrate = sig.current_txrate;
1193                 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm  txrate: %d",
1194                            sig.current_signal, sig.current_txrate);
1195         }
1196
1197         res = nl80211_get_link_noise(drv, &sig);
1198         if (res == 0) {
1199                 ed.signal_change.current_noise = sig.current_noise;
1200                 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1201                            sig.current_noise);
1202         }
1203
1204         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1205 }
1206
1207
1208 static int process_event(struct nl_msg *msg, void *arg)
1209 {
1210         struct wpa_driver_nl80211_data *drv = arg;
1211         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1212         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1213         union wpa_event_data data;
1214
1215         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1216                   genlmsg_attrlen(gnlh, 0), NULL);
1217
1218         if (tb[NL80211_ATTR_IFINDEX]) {
1219                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1220                 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1221                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1222                                    " for foreign interface (ifindex %d)",
1223                                    gnlh->cmd, ifindex);
1224                         return NL_SKIP;
1225                 }
1226         }
1227
1228         if (drv->ap_scan_as_station &&
1229             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1230              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1231                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1232                                             IEEE80211_MODE_AP);
1233                 drv->ap_scan_as_station = 0;
1234         }
1235
1236         switch (gnlh->cmd) {
1237         case NL80211_CMD_TRIGGER_SCAN:
1238                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1239                 break;
1240         case NL80211_CMD_NEW_SCAN_RESULTS:
1241                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1242                 drv->scan_complete_events = 1;
1243                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1244                                      drv->ctx);
1245                 send_scan_event(drv, 0, tb);
1246                 break;
1247         case NL80211_CMD_SCAN_ABORTED:
1248                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1249                 /*
1250                  * Need to indicate that scan results are available in order
1251                  * not to make wpa_supplicant stop its scanning.
1252                  */
1253                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1254                                      drv->ctx);
1255                 send_scan_event(drv, 1, tb);
1256                 break;
1257         case NL80211_CMD_AUTHENTICATE:
1258         case NL80211_CMD_ASSOCIATE:
1259         case NL80211_CMD_DEAUTHENTICATE:
1260         case NL80211_CMD_DISASSOCIATE:
1261         case NL80211_CMD_FRAME:
1262         case NL80211_CMD_FRAME_TX_STATUS:
1263                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1264                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1265                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1266                            tb[NL80211_ATTR_COOKIE]);
1267                 break;
1268         case NL80211_CMD_CONNECT:
1269         case NL80211_CMD_ROAM:
1270                 mlme_event_connect(drv, gnlh->cmd,
1271                                    tb[NL80211_ATTR_STATUS_CODE],
1272                                    tb[NL80211_ATTR_MAC],
1273                                    tb[NL80211_ATTR_REQ_IE],
1274                                    tb[NL80211_ATTR_RESP_IE]);
1275                 break;
1276         case NL80211_CMD_DISCONNECT:
1277                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1278                         /*
1279                          * Avoid reporting two disassociation events that could
1280                          * confuse the core code.
1281                          */
1282                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1283                                    "event when using userspace SME");
1284                         break;
1285                 }
1286                 drv->associated = 0;
1287                 os_memset(&data, 0, sizeof(data));
1288                 if (tb[NL80211_ATTR_REASON_CODE])
1289                         data.disassoc_info.reason_code =
1290                                 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1291                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1292                 break;
1293         case NL80211_CMD_MICHAEL_MIC_FAILURE:
1294                 mlme_event_michael_mic_failure(drv, tb);
1295                 break;
1296         case NL80211_CMD_JOIN_IBSS:
1297                 mlme_event_join_ibss(drv, tb);
1298                 break;
1299         case NL80211_CMD_REMAIN_ON_CHANNEL:
1300                 mlme_event_remain_on_channel(drv, 0, tb);
1301                 break;
1302         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1303                 mlme_event_remain_on_channel(drv, 1, tb);
1304                 break;
1305         case NL80211_CMD_NOTIFY_CQM:
1306                 nl80211_cqm_event(drv, tb);
1307                 break;
1308         default:
1309                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1310                            "(cmd=%d)", gnlh->cmd);
1311                 break;
1312         }
1313
1314         return NL_SKIP;
1315 }
1316
1317
1318 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1319                                              void *handle)
1320 {
1321         struct nl_cb *cb;
1322         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1323
1324         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1325
1326         cb = nl_cb_clone(drv->nl_cb);
1327         if (!cb)
1328                 return;
1329         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1330         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1331         nl_recvmsgs(handle, cb);
1332         nl_cb_put(cb);
1333 }
1334
1335
1336 /**
1337  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1338  * @priv: driver_nl80211 private data
1339  * @alpha2_arg: country to which to switch to
1340  * Returns: 0 on success, -1 on failure
1341  *
1342  * This asks nl80211 to set the regulatory domain for given
1343  * country ISO / IEC alpha2.
1344  */
1345 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1346 {
1347         struct i802_bss *bss = priv;
1348         struct wpa_driver_nl80211_data *drv = bss->drv;
1349         char alpha2[3];
1350         struct nl_msg *msg;
1351
1352         msg = nlmsg_alloc();
1353         if (!msg)
1354                 return -ENOMEM;
1355
1356         alpha2[0] = alpha2_arg[0];
1357         alpha2[1] = alpha2_arg[1];
1358         alpha2[2] = '\0';
1359
1360         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1361                     0, NL80211_CMD_REQ_SET_REG, 0);
1362
1363         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1364         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1365                 return -EINVAL;
1366         return 0;
1367 nla_put_failure:
1368         return -EINVAL;
1369 }
1370
1371
1372 #ifndef HOSTAPD
1373 struct wiphy_info_data {
1374         int max_scan_ssids;
1375         int ap_supported;
1376         int auth_supported;
1377         int connect_supported;
1378 };
1379
1380
1381 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1382 {
1383         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1384         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1385         struct wiphy_info_data *info = arg;
1386
1387         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1388                   genlmsg_attrlen(gnlh, 0), NULL);
1389
1390         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1391                 info->max_scan_ssids =
1392                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1393
1394         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1395                 struct nlattr *nl_mode;
1396                 int i;
1397                 nla_for_each_nested(nl_mode,
1398                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1399                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1400                                 info->ap_supported = 1;
1401                                 break;
1402                         }
1403                 }
1404         }
1405
1406         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1407                 struct nlattr *nl_cmd;
1408                 int i;
1409
1410                 nla_for_each_nested(nl_cmd,
1411                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1412                         u32 cmd = nla_get_u32(nl_cmd);
1413                         if (cmd == NL80211_CMD_AUTHENTICATE)
1414                                 info->auth_supported = 1;
1415                         else if (cmd == NL80211_CMD_CONNECT)
1416                                 info->connect_supported = 1;
1417                 }
1418         }
1419
1420         return NL_SKIP;
1421 }
1422
1423
1424 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1425                                        struct wiphy_info_data *info)
1426 {
1427         struct nl_msg *msg;
1428
1429         os_memset(info, 0, sizeof(*info));
1430         msg = nlmsg_alloc();
1431         if (!msg)
1432                 return -1;
1433
1434         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1435                     0, NL80211_CMD_GET_WIPHY, 0);
1436
1437         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1438
1439         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1440                 return 0;
1441         msg = NULL;
1442 nla_put_failure:
1443         nlmsg_free(msg);
1444         return -1;
1445 }
1446
1447
1448 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1449 {
1450         struct wiphy_info_data info;
1451         if (wpa_driver_nl80211_get_info(drv, &info))
1452                 return -1;
1453         drv->has_capability = 1;
1454         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1455         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1456                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1457                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1458                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1459         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1460                 WPA_DRIVER_CAPA_ENC_WEP104 |
1461                 WPA_DRIVER_CAPA_ENC_TKIP |
1462                 WPA_DRIVER_CAPA_ENC_CCMP;
1463         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1464                 WPA_DRIVER_AUTH_SHARED |
1465                 WPA_DRIVER_AUTH_LEAP;
1466
1467         drv->capa.max_scan_ssids = info.max_scan_ssids;
1468         if (info.ap_supported)
1469                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1470
1471         if (info.auth_supported)
1472                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1473         else if (!info.connect_supported) {
1474                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1475                            "authentication/association or connect commands");
1476                 return -1;
1477         }
1478
1479         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1480         drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1481         drv->capa.max_remain_on_chan = 5000;
1482
1483         return 0;
1484 }
1485 #endif /* HOSTAPD */
1486
1487
1488 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1489 {
1490         int ret;
1491
1492         /* Initialize generic netlink and nl80211 */
1493
1494         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1495         if (drv->nl_cb == NULL) {
1496                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1497                            "callbacks");
1498                 goto err1;
1499         }
1500
1501         drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1502         if (drv->nl_handle == NULL) {
1503                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1504                            "callbacks");
1505                 goto err2;
1506         }
1507
1508         drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1509         if (drv->nl_handle_event == NULL) {
1510                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1511                            "callbacks (event)");
1512                 goto err2b;
1513         }
1514
1515         if (genl_connect(drv->nl_handle)) {
1516                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1517                            "netlink");
1518                 goto err3;
1519         }
1520
1521         if (genl_connect(drv->nl_handle_event)) {
1522                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1523                            "netlink (event)");
1524                 goto err3;
1525         }
1526
1527 #ifdef CONFIG_LIBNL20
1528         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1529                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1530                            "netlink cache");
1531                 goto err3;
1532         }
1533         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1534             0) {
1535                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1536                            "netlink cache (event)");
1537                 goto err3b;
1538         }
1539 #else /* CONFIG_LIBNL20 */
1540         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1541         if (drv->nl_cache == NULL) {
1542                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1543                            "netlink cache");
1544                 goto err3;
1545         }
1546         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1547         if (drv->nl_cache_event == NULL) {
1548                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1549                            "netlink cache (event)");
1550                 goto err3b;
1551         }
1552 #endif /* CONFIG_LIBNL20 */
1553
1554         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1555         if (drv->nl80211 == NULL) {
1556                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1557                            "found");
1558                 goto err4;
1559         }
1560
1561         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1562         if (ret >= 0)
1563                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1564         if (ret < 0) {
1565                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1566                            "membership for scan events: %d (%s)",
1567                            ret, strerror(-ret));
1568                 goto err4;
1569         }
1570
1571         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1572         if (ret >= 0)
1573                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1574         if (ret < 0) {
1575                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1576                            "membership for mlme events: %d (%s)",
1577                            ret, strerror(-ret));
1578                 goto err4;
1579         }
1580
1581         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1582                                  wpa_driver_nl80211_event_receive, drv,
1583                                  drv->nl_handle_event);
1584
1585         return 0;
1586
1587 err4:
1588         nl_cache_free(drv->nl_cache_event);
1589 err3b:
1590         nl_cache_free(drv->nl_cache);
1591 err3:
1592         nl80211_handle_destroy(drv->nl_handle_event);
1593 err2b:
1594         nl80211_handle_destroy(drv->nl_handle);
1595 err2:
1596         nl_cb_put(drv->nl_cb);
1597 err1:
1598         return -1;
1599 }
1600
1601
1602 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1603 {
1604         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1605         /*
1606          * This may be for any interface; use ifdown event to disable
1607          * interface.
1608          */
1609 }
1610
1611
1612 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1613 {
1614         struct wpa_driver_nl80211_data *drv = ctx;
1615         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1616         if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1617                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1618                            "after rfkill unblock");
1619                 return;
1620         }
1621         /* rtnetlink ifup handler will report interface as enabled */
1622 }
1623
1624
1625 /**
1626  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1627  * @ctx: context to be used when calling wpa_supplicant functions,
1628  * e.g., wpa_supplicant_event()
1629  * @ifname: interface name, e.g., wlan0
1630  * Returns: Pointer to private data, %NULL on failure
1631  */
1632 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1633 {
1634         struct wpa_driver_nl80211_data *drv;
1635         struct netlink_config *cfg;
1636         struct rfkill_config *rcfg;
1637         struct i802_bss *bss;
1638
1639         drv = os_zalloc(sizeof(*drv));
1640         if (drv == NULL)
1641                 return NULL;
1642         drv->ctx = ctx;
1643         bss = &drv->first_bss;
1644         bss->drv = drv;
1645         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1646         drv->monitor_ifidx = -1;
1647         drv->monitor_sock = -1;
1648         drv->ioctl_sock = -1;
1649
1650         if (wpa_driver_nl80211_init_nl(drv)) {
1651                 os_free(drv);
1652                 return NULL;
1653         }
1654
1655         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1656         if (drv->ioctl_sock < 0) {
1657                 perror("socket(PF_INET,SOCK_DGRAM)");
1658                 goto failed;
1659         }
1660
1661         cfg = os_zalloc(sizeof(*cfg));
1662         if (cfg == NULL)
1663                 goto failed;
1664         cfg->ctx = drv;
1665         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1666         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1667         drv->netlink = netlink_init(cfg);
1668         if (drv->netlink == NULL) {
1669                 os_free(cfg);
1670                 goto failed;
1671         }
1672
1673         rcfg = os_zalloc(sizeof(*rcfg));
1674         if (rcfg == NULL)
1675                 goto failed;
1676         rcfg->ctx = drv;
1677         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1678         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1679         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1680         drv->rfkill = rfkill_init(rcfg);
1681         if (drv->rfkill == NULL) {
1682                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1683                 os_free(rcfg);
1684         }
1685
1686         if (wpa_driver_nl80211_finish_drv_init(drv))
1687                 goto failed;
1688
1689         return bss;
1690
1691 failed:
1692         rfkill_deinit(drv->rfkill);
1693         netlink_deinit(drv->netlink);
1694         if (drv->ioctl_sock >= 0)
1695                 close(drv->ioctl_sock);
1696
1697         genl_family_put(drv->nl80211);
1698         nl_cache_free(drv->nl_cache);
1699         nl80211_handle_destroy(drv->nl_handle);
1700         nl_cb_put(drv->nl_cb);
1701         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1702
1703         os_free(drv);
1704         return NULL;
1705 }
1706
1707
1708 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1709                                   struct nl_handle *nl_handle,
1710                                   u16 type, const u8 *match, size_t match_len)
1711 {
1712         struct nl_msg *msg;
1713         int ret = -1;
1714
1715         msg = nlmsg_alloc();
1716         if (!msg)
1717                 return -1;
1718
1719         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1720                     NL80211_CMD_REGISTER_ACTION, 0);
1721
1722         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1723         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1724         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1725
1726         ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
1727         msg = NULL;
1728         if (ret) {
1729                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1730                            "failed (type=%u): ret=%d (%s)",
1731                            type, ret, strerror(-ret));
1732                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1733                             match, match_len);
1734                 goto nla_put_failure;
1735         }
1736         ret = 0;
1737 nla_put_failure:
1738         nlmsg_free(msg);
1739         return ret;
1740 }
1741
1742
1743 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1744                                          const u8 *match, size_t match_len)
1745 {
1746         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1747         return nl80211_register_frame(drv, drv->nl_handle_event,
1748                                       type, match, match_len);
1749 }
1750
1751
1752 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1753 {
1754 #ifdef CONFIG_P2P
1755         /* GAS Initial Request */
1756         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1757                 return -1;
1758         /* GAS Initial Response */
1759         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1760                 return -1;
1761         /* GAS Comeback Request */
1762         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1763                 return -1;
1764         /* GAS Comeback Response */
1765         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1766                 return -1;
1767         /* P2P Public Action */
1768         if (nl80211_register_action_frame(drv,
1769                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1770                                           6) < 0)
1771                 return -1;
1772         /* P2P Action */
1773         if (nl80211_register_action_frame(drv,
1774                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1775                                           5) < 0)
1776                 return -1;
1777 #endif /* CONFIG_P2P */
1778
1779         /* FT Action frames */
1780         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1781                 return -1;
1782         else
1783                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1784                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1785
1786         return 0;
1787 }
1788
1789
1790 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1791 {
1792         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1793 }
1794
1795
1796 static int
1797 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1798 {
1799         struct i802_bss *bss = &drv->first_bss;
1800         int send_rfkill_event = 0;
1801
1802         drv->ifindex = if_nametoindex(bss->ifname);
1803         drv->first_bss.ifindex = drv->ifindex;
1804
1805 #ifndef HOSTAPD
1806         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1807                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1808                            "use managed mode");
1809         }
1810
1811         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1812                 if (rfkill_is_blocked(drv->rfkill)) {
1813                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1814                                    "interface '%s' due to rfkill",
1815                                    bss->ifname);
1816                         drv->if_disabled = 1;
1817                         send_rfkill_event = 1;
1818                 } else {
1819                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
1820                                    "interface '%s' UP", bss->ifname);
1821                         return -1;
1822                 }
1823         }
1824
1825         if (wpa_driver_nl80211_capa(drv))
1826                 return -1;
1827
1828         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1829                                1, IF_OPER_DORMANT);
1830 #endif /* HOSTAPD */
1831
1832         if (nl80211_register_action_frames(drv) < 0) {
1833                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1834                            "frame processing - ignore for now");
1835                 /*
1836                  * Older kernel versions did not support this, so ignore the
1837                  * error for now. Some functionality may not be available
1838                  * because of this.
1839                  */
1840         }
1841
1842         if (send_rfkill_event) {
1843                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1844                                        drv, drv->ctx);
1845         }
1846
1847         return 0;
1848 }
1849
1850
1851 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1852 {
1853         struct nl_msg *msg;
1854
1855         msg = nlmsg_alloc();
1856         if (!msg)
1857                 return -ENOMEM;
1858
1859         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1860                     0, NL80211_CMD_DEL_BEACON, 0);
1861         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1862
1863         return send_and_recv_msgs(drv, msg, NULL, NULL);
1864  nla_put_failure:
1865         return -ENOBUFS;
1866 }
1867
1868
1869 /**
1870  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1871  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1872  *
1873  * Shut down driver interface and processing of driver events. Free
1874  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1875  */
1876 static void wpa_driver_nl80211_deinit(void *priv)
1877 {
1878         struct i802_bss *bss = priv;
1879         struct wpa_driver_nl80211_data *drv = bss->drv;
1880
1881         if (drv->nl_handle_preq)
1882                 wpa_driver_nl80211_probe_req_report(bss, 0);
1883         if (drv->added_if_into_bridge) {
1884                 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1885                     < 0)
1886                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1887                                    "interface %s from bridge %s: %s",
1888                                    bss->ifname, drv->brname, strerror(errno));
1889         }
1890         if (drv->added_bridge) {
1891                 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1892                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1893                                    "bridge %s: %s",
1894                                    drv->brname, strerror(errno));
1895         }
1896
1897         nl80211_remove_monitor_interface(drv);
1898
1899         if (drv->nlmode == NL80211_IFTYPE_AP)
1900                 wpa_driver_nl80211_del_beacon(drv);
1901
1902 #ifdef HOSTAPD
1903         if (drv->last_freq_ht) {
1904                 /* Clear HT flags from the driver */
1905                 struct hostapd_freq_params freq;
1906                 os_memset(&freq, 0, sizeof(freq));
1907                 freq.freq = drv->last_freq;
1908                 i802_set_freq(priv, &freq);
1909         }
1910
1911         if (drv->eapol_sock >= 0) {
1912                 eloop_unregister_read_sock(drv->eapol_sock);
1913                 close(drv->eapol_sock);
1914         }
1915
1916         if (drv->if_indices != drv->default_if_indices)
1917                 os_free(drv->if_indices);
1918 #endif /* HOSTAPD */
1919
1920         if (drv->disable_11b_rates)
1921                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1922
1923         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1924         netlink_deinit(drv->netlink);
1925         rfkill_deinit(drv->rfkill);
1926
1927         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1928
1929         (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1930         wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1931
1932         if (drv->ioctl_sock >= 0)
1933                 close(drv->ioctl_sock);
1934
1935         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1936         genl_family_put(drv->nl80211);
1937         nl_cache_free(drv->nl_cache);
1938         nl_cache_free(drv->nl_cache_event);
1939         nl80211_handle_destroy(drv->nl_handle);
1940         nl80211_handle_destroy(drv->nl_handle_event);
1941         nl_cb_put(drv->nl_cb);
1942
1943         os_free(drv->filter_ssids);
1944
1945         os_free(drv);
1946 }
1947
1948
1949 /**
1950  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1951  * @eloop_ctx: Driver private data
1952  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1953  *
1954  * This function can be used as registered timeout when starting a scan to
1955  * generate a scan completed event if the driver does not report this.
1956  */
1957 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1958 {
1959         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1960         if (drv->ap_scan_as_station) {
1961                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1962                                             IEEE80211_MODE_AP);
1963                 drv->ap_scan_as_station = 0;
1964         }
1965         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1966         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1967 }
1968
1969
1970 /**
1971  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1972  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1973  * @params: Scan parameters
1974  * Returns: 0 on success, -1 on failure
1975  */
1976 static int wpa_driver_nl80211_scan(void *priv,
1977                                    struct wpa_driver_scan_params *params)
1978 {
1979         struct i802_bss *bss = priv;
1980         struct wpa_driver_nl80211_data *drv = bss->drv;
1981         int ret = 0, timeout;
1982         struct nl_msg *msg, *ssids, *freqs;
1983         size_t i;
1984
1985         msg = nlmsg_alloc();
1986         ssids = nlmsg_alloc();
1987         freqs = nlmsg_alloc();
1988         if (!msg || !ssids || !freqs) {
1989                 nlmsg_free(msg);
1990                 nlmsg_free(ssids);
1991                 nlmsg_free(freqs);
1992                 return -1;
1993         }
1994
1995         os_free(drv->filter_ssids);
1996         drv->filter_ssids = params->filter_ssids;
1997         params->filter_ssids = NULL;
1998         drv->num_filter_ssids = params->num_filter_ssids;
1999
2000         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2001                     NL80211_CMD_TRIGGER_SCAN, 0);
2002
2003         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2004
2005         for (i = 0; i < params->num_ssids; i++) {
2006                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2007                                   params->ssids[i].ssid,
2008                                   params->ssids[i].ssid_len);
2009                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2010                         params->ssids[i].ssid);
2011         }
2012         if (params->num_ssids)
2013                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2014
2015         if (params->extra_ies) {
2016                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2017                                   params->extra_ies, params->extra_ies_len);
2018                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2019                         params->extra_ies);
2020         }
2021
2022         if (params->freqs) {
2023                 for (i = 0; params->freqs[i]; i++) {
2024                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2025                                    "MHz", params->freqs[i]);
2026                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2027                 }
2028                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2029         }
2030
2031         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2032         msg = NULL;
2033         if (ret) {
2034                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2035                            "(%s)", ret, strerror(-ret));
2036 #ifdef HOSTAPD
2037                 if (drv->nlmode == NL80211_IFTYPE_AP) {
2038                         /*
2039                          * mac80211 does not allow scan requests in AP mode, so
2040                          * try to do this in station mode.
2041                          */
2042                         if (wpa_driver_nl80211_set_mode(bss,
2043                                                         IEEE80211_MODE_INFRA))
2044                                 goto nla_put_failure;
2045
2046                         if (wpa_driver_nl80211_scan(drv, params)) {
2047                                 wpa_driver_nl80211_set_mode(bss,
2048                                                             IEEE80211_MODE_AP);
2049                                 goto nla_put_failure;
2050                         }
2051
2052                         /* Restore AP mode when processing scan results */
2053                         drv->ap_scan_as_station = 1;
2054                         ret = 0;
2055                 } else
2056                         goto nla_put_failure;
2057 #else /* HOSTAPD */
2058                 goto nla_put_failure;
2059 #endif /* HOSTAPD */
2060         }
2061
2062         /* Not all drivers generate "scan completed" wireless event, so try to
2063          * read results after a timeout. */
2064         timeout = 10;
2065         if (drv->scan_complete_events) {
2066                 /*
2067                  * The driver seems to deliver events to notify when scan is
2068                  * complete, so use longer timeout to avoid race conditions
2069                  * with scanning and following association request.
2070                  */
2071                 timeout = 30;
2072         }
2073         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2074                    "seconds", ret, timeout);
2075         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2076         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2077                                drv, drv->ctx);
2078
2079 nla_put_failure:
2080         nlmsg_free(ssids);
2081         nlmsg_free(msg);
2082         nlmsg_free(freqs);
2083         return ret;
2084 }
2085
2086
2087 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2088 {
2089         const u8 *end, *pos;
2090
2091         if (ies == NULL)
2092                 return NULL;
2093
2094         pos = ies;
2095         end = ies + ies_len;
2096
2097         while (pos + 1 < end) {
2098                 if (pos + 2 + pos[1] > end)
2099                         break;
2100                 if (pos[0] == ie)
2101                         return pos;
2102                 pos += 2 + pos[1];
2103         }
2104
2105         return NULL;
2106 }
2107
2108
2109 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2110                                  const u8 *ie, size_t ie_len)
2111 {
2112         const u8 *ssid;
2113         size_t i;
2114
2115         if (drv->filter_ssids == NULL)
2116                 return 0;
2117
2118         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2119         if (ssid == NULL)
2120                 return 1;
2121
2122         for (i = 0; i < drv->num_filter_ssids; i++) {
2123                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2124                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2125                     0)
2126                         return 0;
2127         }
2128
2129         return 1;
2130 }
2131
2132
2133 struct nl80211_bss_info_arg {
2134         struct wpa_driver_nl80211_data *drv;
2135         struct wpa_scan_results *res;
2136 };
2137
2138 static int bss_info_handler(struct nl_msg *msg, void *arg)
2139 {
2140         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2141         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2142         struct nlattr *bss[NL80211_BSS_MAX + 1];
2143         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2144                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2145                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2146                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2147                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2148                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2149                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2150                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2151                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2152                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2153                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2154                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2155         };
2156         struct nl80211_bss_info_arg *_arg = arg;
2157         struct wpa_scan_results *res = _arg->res;
2158         struct wpa_scan_res **tmp;
2159         struct wpa_scan_res *r;
2160         const u8 *ie, *beacon_ie;
2161         size_t ie_len, beacon_ie_len;
2162         u8 *pos;
2163
2164         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2165                   genlmsg_attrlen(gnlh, 0), NULL);
2166         if (!tb[NL80211_ATTR_BSS])
2167                 return NL_SKIP;
2168         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2169                              bss_policy))
2170                 return NL_SKIP;
2171         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2172                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2173                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2174         } else {
2175                 ie = NULL;
2176                 ie_len = 0;
2177         }
2178         if (bss[NL80211_BSS_BEACON_IES]) {
2179                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2180                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2181         } else {
2182                 beacon_ie = NULL;
2183                 beacon_ie_len = 0;
2184         }
2185
2186         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2187                                   ie ? ie_len : beacon_ie_len))
2188                 return NL_SKIP;
2189
2190         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2191         if (r == NULL)
2192                 return NL_SKIP;
2193         if (bss[NL80211_BSS_BSSID])
2194                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2195                           ETH_ALEN);
2196         if (bss[NL80211_BSS_FREQUENCY])
2197                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2198         if (bss[NL80211_BSS_BEACON_INTERVAL])
2199                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2200         if (bss[NL80211_BSS_CAPABILITY])
2201                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2202         r->flags |= WPA_SCAN_NOISE_INVALID;
2203         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2204                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2205                 r->level /= 100; /* mBm to dBm */
2206                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2207         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2208                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2209                 r->flags |= WPA_SCAN_LEVEL_INVALID;
2210         } else
2211                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2212         if (bss[NL80211_BSS_TSF])
2213                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2214         if (bss[NL80211_BSS_SEEN_MS_AGO])
2215                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2216         r->ie_len = ie_len;
2217         pos = (u8 *) (r + 1);
2218         if (ie) {
2219                 os_memcpy(pos, ie, ie_len);
2220                 pos += ie_len;
2221         }
2222         r->beacon_ie_len = beacon_ie_len;
2223         if (beacon_ie)
2224                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2225
2226         if (bss[NL80211_BSS_STATUS]) {
2227                 enum nl80211_bss_status status;
2228                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2229                 switch (status) {
2230                 case NL80211_BSS_STATUS_AUTHENTICATED:
2231                         r->flags |= WPA_SCAN_AUTHENTICATED;
2232                         break;
2233                 case NL80211_BSS_STATUS_ASSOCIATED:
2234                         r->flags |= WPA_SCAN_ASSOCIATED;
2235                         break;
2236                 default:
2237                         break;
2238                 }
2239         }
2240
2241         tmp = os_realloc(res->res,
2242                          (res->num + 1) * sizeof(struct wpa_scan_res *));
2243         if (tmp == NULL) {
2244                 os_free(r);
2245                 return NL_SKIP;
2246         }
2247         tmp[res->num++] = r;
2248         res->res = tmp;
2249
2250         return NL_SKIP;
2251 }
2252
2253
2254 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2255                                  const u8 *addr)
2256 {
2257         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2258                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2259                            "mismatch (" MACSTR ")", MAC2STR(addr));
2260                 wpa_driver_nl80211_mlme(drv, addr,
2261                                         NL80211_CMD_DEAUTHENTICATE,
2262                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2263         }
2264 }
2265
2266
2267 static void wpa_driver_nl80211_check_bss_status(
2268         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2269 {
2270         size_t i;
2271
2272         for (i = 0; i < res->num; i++) {
2273                 struct wpa_scan_res *r = res->res[i];
2274                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2275                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2276                                    "indicates BSS status with " MACSTR
2277                                    " as authenticated",
2278                                    MAC2STR(r->bssid));
2279                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
2280                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2281                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2282                             0) {
2283                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2284                                            " in local state (auth=" MACSTR
2285                                            " assoc=" MACSTR ")",
2286                                            MAC2STR(drv->auth_bssid),
2287                                            MAC2STR(drv->bssid));
2288                                 clear_state_mismatch(drv, r->bssid);
2289                         }
2290                 }
2291
2292                 if (r->flags & WPA_SCAN_ASSOCIATED) {
2293                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2294                                    "indicate BSS status with " MACSTR
2295                                    " as associated",
2296                                    MAC2STR(r->bssid));
2297                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
2298                             !drv->associated) {
2299                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2300                                            "(not associated) does not match "
2301                                            "with BSS state");
2302                                 clear_state_mismatch(drv, r->bssid);
2303                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2304                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2305                                    0) {
2306                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2307                                            "(associated with " MACSTR ") does "
2308                                            "not match with BSS state",
2309                                            MAC2STR(drv->bssid));
2310                                 clear_state_mismatch(drv, r->bssid);
2311                                 clear_state_mismatch(drv, drv->bssid);
2312                         }
2313                 }
2314         }
2315 }
2316
2317
2318 static void wpa_scan_results_free(struct wpa_scan_results *res)
2319 {
2320         size_t i;
2321
2322         if (res == NULL)
2323                 return;
2324
2325         for (i = 0; i < res->num; i++)
2326                 os_free(res->res[i]);
2327         os_free(res->res);
2328         os_free(res);
2329 }
2330
2331
2332 static struct wpa_scan_results *
2333 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2334 {
2335         struct nl_msg *msg;
2336         struct wpa_scan_results *res;
2337         int ret;
2338         struct nl80211_bss_info_arg arg;
2339
2340         res = os_zalloc(sizeof(*res));
2341         if (res == NULL)
2342                 return NULL;
2343         msg = nlmsg_alloc();
2344         if (!msg)
2345                 goto nla_put_failure;
2346
2347         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2348                     NL80211_CMD_GET_SCAN, 0);
2349         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2350
2351         arg.drv = drv;
2352         arg.res = res;
2353         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2354         msg = NULL;
2355         if (ret == 0) {
2356                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2357                            (unsigned long) res->num);
2358                 return res;
2359         }
2360         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2361                    "(%s)", ret, strerror(-ret));
2362 nla_put_failure:
2363         nlmsg_free(msg);
2364         wpa_scan_results_free(res);
2365         return NULL;
2366 }
2367
2368
2369 /**
2370  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2371  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2372  * Returns: Scan results on success, -1 on failure
2373  */
2374 static struct wpa_scan_results *
2375 wpa_driver_nl80211_get_scan_results(void *priv)
2376 {
2377         struct i802_bss *bss = priv;
2378         struct wpa_driver_nl80211_data *drv = bss->drv;
2379         struct wpa_scan_results *res;
2380
2381         res = nl80211_get_scan_results(drv);
2382         if (res)
2383                 wpa_driver_nl80211_check_bss_status(drv, res);
2384         return res;
2385 }
2386
2387
2388 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2389 {
2390         struct wpa_scan_results *res;
2391         size_t i;
2392
2393         res = nl80211_get_scan_results(drv);
2394         if (res == NULL) {
2395                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2396                 return;
2397         }
2398
2399         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2400         for (i = 0; i < res->num; i++) {
2401                 struct wpa_scan_res *r = res->res[i];
2402                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2403                            (int) i, (int) res->num, MAC2STR(r->bssid),
2404                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2405                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2406         }
2407
2408         wpa_scan_results_free(res);
2409 }
2410
2411
2412 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2413                                       enum wpa_alg alg, const u8 *addr,
2414                                       int key_idx, int set_tx,
2415                                       const u8 *seq, size_t seq_len,
2416                                       const u8 *key, size_t key_len)
2417 {
2418         struct i802_bss *bss = priv;
2419         struct wpa_driver_nl80211_data *drv = bss->drv;
2420         int ifindex = if_nametoindex(ifname);
2421         struct nl_msg *msg;
2422         int ret;
2423
2424         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2425                    "set_tx=%d seq_len=%lu key_len=%lu",
2426                    __func__, ifindex, alg, addr, key_idx, set_tx,
2427                    (unsigned long) seq_len, (unsigned long) key_len);
2428
2429         msg = nlmsg_alloc();
2430         if (!msg)
2431                 return -ENOMEM;
2432
2433         if (alg == WPA_ALG_NONE) {
2434                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2435                             0, NL80211_CMD_DEL_KEY, 0);
2436         } else {
2437                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2438                             0, NL80211_CMD_NEW_KEY, 0);
2439                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2440                 switch (alg) {
2441                 case WPA_ALG_WEP:
2442                         if (key_len == 5)
2443                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2444                                             WLAN_CIPHER_SUITE_WEP40);
2445                         else
2446                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2447                                             WLAN_CIPHER_SUITE_WEP104);
2448                         break;
2449                 case WPA_ALG_TKIP:
2450                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2451                                     WLAN_CIPHER_SUITE_TKIP);
2452                         break;
2453                 case WPA_ALG_CCMP:
2454                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2455                                     WLAN_CIPHER_SUITE_CCMP);
2456                         break;
2457                 case WPA_ALG_IGTK:
2458                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2459                                     WLAN_CIPHER_SUITE_AES_CMAC);
2460                         break;
2461                 default:
2462                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2463                                    "algorithm %d", __func__, alg);
2464                         nlmsg_free(msg);
2465                         return -1;
2466                 }
2467         }
2468
2469         if (seq && seq_len)
2470                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2471
2472         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2473         {
2474                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2475                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2476         }
2477         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2478         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2479
2480         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2481         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2482                 ret = 0;
2483         if (ret)
2484                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2485                            ret, strerror(-ret));
2486
2487         /*
2488          * If we failed or don't need to set the default TX key (below),
2489          * we're done here.
2490          */
2491         if (ret || !set_tx || alg == WPA_ALG_NONE)
2492                 return ret;
2493 #ifdef HOSTAPD
2494         if (addr)
2495                 return ret;
2496 #else /* HOSTAPD */
2497         if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2498                 return ret;
2499 #endif /* HOSTAPD */
2500
2501         msg = nlmsg_alloc();
2502         if (!msg)
2503                 return -ENOMEM;
2504
2505         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2506                     0, NL80211_CMD_SET_KEY, 0);
2507         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2508         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2509         if (alg == WPA_ALG_IGTK)
2510                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2511         else
2512                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2513
2514         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2515         if (ret == -ENOENT)
2516                 ret = 0;
2517         if (ret)
2518                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2519                            "err=%d %s)", ret, strerror(-ret));
2520         return ret;
2521
2522 nla_put_failure:
2523         return -ENOBUFS;
2524 }
2525
2526
2527 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2528                       int key_idx, int defkey,
2529                       const u8 *seq, size_t seq_len,
2530                       const u8 *key, size_t key_len)
2531 {
2532         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2533         if (!key_attr)
2534                 return -1;
2535
2536         if (defkey && alg == WPA_ALG_IGTK)
2537                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2538         else if (defkey)
2539                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2540
2541         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2542
2543         switch (alg) {
2544         case WPA_ALG_WEP:
2545                 if (key_len == 5)
2546                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2547                                     WLAN_CIPHER_SUITE_WEP40);
2548                 else
2549                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2550                                     WLAN_CIPHER_SUITE_WEP104);
2551                 break;
2552         case WPA_ALG_TKIP:
2553                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2554                 break;
2555         case WPA_ALG_CCMP:
2556                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2557                 break;
2558         case WPA_ALG_IGTK:
2559                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2560                             WLAN_CIPHER_SUITE_AES_CMAC);
2561                 break;
2562         default:
2563                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2564                            "algorithm %d", __func__, alg);
2565                 return -1;
2566         }
2567
2568         if (seq && seq_len)
2569                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2570
2571         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2572
2573         nla_nest_end(msg, key_attr);
2574
2575         return 0;
2576  nla_put_failure:
2577         return -1;
2578 }
2579
2580
2581 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2582                                  struct nl_msg *msg)
2583 {
2584         int i, privacy = 0;
2585         struct nlattr *nl_keys, *nl_key;
2586
2587         for (i = 0; i < 4; i++) {
2588                 if (!params->wep_key[i])
2589                         continue;
2590                 privacy = 1;
2591                 break;
2592         }
2593         if (!privacy)
2594                 return 0;
2595
2596         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2597
2598         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2599         if (!nl_keys)
2600                 goto nla_put_failure;
2601
2602         for (i = 0; i < 4; i++) {
2603                 if (!params->wep_key[i])
2604                         continue;
2605
2606                 nl_key = nla_nest_start(msg, i);
2607                 if (!nl_key)
2608                         goto nla_put_failure;
2609
2610                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2611                         params->wep_key[i]);
2612                 if (params->wep_key_len[i] == 5)
2613                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2614                                     WLAN_CIPHER_SUITE_WEP40);
2615                 else
2616                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2617                                     WLAN_CIPHER_SUITE_WEP104);
2618
2619                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2620
2621                 if (i == params->wep_tx_keyidx)
2622                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2623
2624                 nla_nest_end(msg, nl_key);
2625         }
2626         nla_nest_end(msg, nl_keys);
2627
2628         return 0;
2629
2630 nla_put_failure:
2631         return -ENOBUFS;
2632 }
2633
2634
2635 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2636                                    const u8 *addr, int cmd, u16 reason_code,
2637                                    int local_state_change)
2638 {
2639         int ret = -1;
2640         struct nl_msg *msg;
2641
2642         msg = nlmsg_alloc();
2643         if (!msg)
2644                 return -1;
2645
2646         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2647
2648         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2649         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2650         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2651         if (local_state_change)
2652                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2653
2654         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2655         msg = NULL;
2656         if (ret) {
2657                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2658                            "(%s)", ret, strerror(-ret));
2659                 goto nla_put_failure;
2660         }
2661         ret = 0;
2662
2663 nla_put_failure:
2664         nlmsg_free(msg);
2665         return ret;
2666 }
2667
2668
2669 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2670                                          const u8 *addr, int reason_code)
2671 {
2672         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2673                    __func__, MAC2STR(addr), reason_code);
2674         drv->associated = 0;
2675         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2676                                        reason_code, 0);
2677 }
2678
2679
2680 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2681                                              int reason_code)
2682 {
2683         struct i802_bss *bss = priv;
2684         struct wpa_driver_nl80211_data *drv = bss->drv;
2685         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2686                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2687         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2688                    __func__, MAC2STR(addr), reason_code);
2689         drv->associated = 0;
2690         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2691                                        reason_code, 0);
2692 }
2693
2694
2695 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2696                                            int reason_code)
2697 {
2698         struct i802_bss *bss = priv;
2699         struct wpa_driver_nl80211_data *drv = bss->drv;
2700         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2701                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2702         wpa_printf(MSG_DEBUG, "%s", __func__);
2703         drv->associated = 0;
2704         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2705                                        reason_code, 0);
2706 }
2707
2708
2709 static int wpa_driver_nl80211_authenticate(
2710         void *priv, struct wpa_driver_auth_params *params)
2711 {
2712         struct i802_bss *bss = priv;
2713         struct wpa_driver_nl80211_data *drv = bss->drv;
2714         int ret = -1, i;
2715         struct nl_msg *msg;
2716         enum nl80211_auth_type type;
2717         int count = 0;
2718
2719         drv->associated = 0;
2720         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2721         /* FIX: IBSS mode */
2722         if (drv->nlmode != NL80211_IFTYPE_STATION)
2723                 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2724
2725         if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2726                 return -1;
2727
2728 retry:
2729         msg = nlmsg_alloc();
2730         if (!msg)
2731                 return -1;
2732
2733         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2734                    drv->ifindex);
2735
2736         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2737                     NL80211_CMD_AUTHENTICATE, 0);
2738
2739         for (i = 0; i < 4; i++) {
2740                 if (!params->wep_key[i])
2741                         continue;
2742                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2743                                            NULL, i,
2744                                            i == params->wep_tx_keyidx, NULL, 0,
2745                                            params->wep_key[i],
2746                                            params->wep_key_len[i]);
2747                 if (params->wep_tx_keyidx != i)
2748                         continue;
2749                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2750                                params->wep_key[i], params->wep_key_len[i])) {
2751                         nlmsg_free(msg);
2752                         return -1;
2753                 }
2754         }
2755
2756         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2757         if (params->bssid) {
2758                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2759                            MAC2STR(params->bssid));
2760                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2761         }
2762         if (params->freq) {
2763                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2764                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2765         }
2766         if (params->ssid) {
2767                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2768                                   params->ssid, params->ssid_len);
2769                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2770                         params->ssid);
2771         }
2772         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2773         if (params->ie)
2774                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2775         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2776                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2777         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2778                 type = NL80211_AUTHTYPE_SHARED_KEY;
2779         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2780                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2781         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2782                 type = NL80211_AUTHTYPE_FT;
2783         else
2784                 goto nla_put_failure;
2785         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2786         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2787         if (params->local_state_change) {
2788                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2789                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2790         }
2791
2792         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2793         msg = NULL;
2794         if (ret) {
2795                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2796                            "(%s)", ret, strerror(-ret));
2797                 count++;
2798                 if (ret == -EALREADY && count == 1 && params->bssid &&
2799                     !params->local_state_change) {
2800                         /*
2801                          * mac80211 does not currently accept new
2802                          * authentication if we are already authenticated. As a
2803                          * workaround, force deauthentication and try again.
2804                          */
2805                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2806                                    "after forced deauthentication");
2807                         wpa_driver_nl80211_deauthenticate(
2808                                 bss, params->bssid,
2809                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2810                         nlmsg_free(msg);
2811                         goto retry;
2812                 }
2813                 goto nla_put_failure;
2814         }
2815         ret = 0;
2816         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2817                    "successfully");
2818
2819 nla_put_failure:
2820         nlmsg_free(msg);
2821         return ret;
2822 }
2823
2824
2825 struct phy_info_arg {
2826         u16 *num_modes;
2827         struct hostapd_hw_modes *modes;
2828 };
2829
2830 static int phy_info_handler(struct nl_msg *msg, void *arg)
2831 {
2832         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2833         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2834         struct phy_info_arg *phy_info = arg;
2835
2836         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2837
2838         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2839         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2840                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2841                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2842                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2843                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2844                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2845                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2846         };
2847
2848         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2849         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2850                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2851                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2852         };
2853
2854         struct nlattr *nl_band;
2855         struct nlattr *nl_freq;
2856         struct nlattr *nl_rate;
2857         int rem_band, rem_freq, rem_rate;
2858         struct hostapd_hw_modes *mode;
2859         int idx, mode_is_set;
2860
2861         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2862                   genlmsg_attrlen(gnlh, 0), NULL);
2863
2864         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2865                 return NL_SKIP;
2866
2867         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2868                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2869                 if (!mode)
2870                         return NL_SKIP;
2871                 phy_info->modes = mode;
2872
2873                 mode_is_set = 0;
2874
2875                 mode = &phy_info->modes[*(phy_info->num_modes)];
2876                 memset(mode, 0, sizeof(*mode));
2877                 *(phy_info->num_modes) += 1;
2878
2879                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2880                           nla_len(nl_band), NULL);
2881
2882                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2883                         mode->ht_capab = nla_get_u16(
2884                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2885                 }
2886
2887                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2888                         mode->a_mpdu_params |= nla_get_u8(
2889                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2890                                 0x03;
2891                 }
2892
2893                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2894                         mode->a_mpdu_params |= nla_get_u8(
2895                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2896                                 2;
2897                 }
2898
2899                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2900                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2901                         u8 *mcs;
2902                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2903                         os_memcpy(mode->mcs_set, mcs, 16);
2904                 }
2905
2906                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2907                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2908                                   nla_len(nl_freq), freq_policy);
2909                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2910                                 continue;
2911                         mode->num_channels++;
2912                 }
2913
2914                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2915                 if (!mode->channels)
2916                         return NL_SKIP;
2917
2918                 idx = 0;
2919
2920                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2921                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2922                                   nla_len(nl_freq), freq_policy);
2923                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2924                                 continue;
2925
2926                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2927                         mode->channels[idx].flag = 0;
2928
2929                         if (!mode_is_set) {
2930                                 /* crude heuristic */
2931                                 if (mode->channels[idx].freq < 4000)
2932                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2933                                 else
2934                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2935                                 mode_is_set = 1;
2936                         }
2937
2938                         /* crude heuristic */
2939                         if (mode->channels[idx].freq < 4000)
2940                                 if (mode->channels[idx].freq == 2484)
2941                                         mode->channels[idx].chan = 14;
2942                                 else
2943                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2944                         else
2945                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2946
2947                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2948                                 mode->channels[idx].flag |=
2949                                         HOSTAPD_CHAN_DISABLED;
2950                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2951                                 mode->channels[idx].flag |=
2952                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2953                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2954                                 mode->channels[idx].flag |=
2955                                         HOSTAPD_CHAN_NO_IBSS;
2956                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2957                                 mode->channels[idx].flag |=
2958                                         HOSTAPD_CHAN_RADAR;
2959
2960                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2961                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2962                                 mode->channels[idx].max_tx_power =
2963                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2964
2965                         idx++;
2966                 }
2967
2968                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2969                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2970                                   nla_len(nl_rate), rate_policy);
2971                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2972                                 continue;
2973                         mode->num_rates++;
2974                 }
2975
2976                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2977                 if (!mode->rates)
2978                         return NL_SKIP;
2979
2980                 idx = 0;
2981
2982                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2983                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2984                                   nla_len(nl_rate), rate_policy);
2985                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2986                                 continue;
2987                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2988
2989                         /* crude heuristic */
2990                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2991                             mode->rates[idx] > 200)
2992                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2993
2994                         idx++;
2995                 }
2996         }
2997
2998         return NL_SKIP;
2999 }
3000
3001 static struct hostapd_hw_modes *
3002 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3003 {
3004         u16 m;
3005         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3006         int i, mode11g_idx = -1;
3007
3008         /* If only 802.11g mode is included, use it to construct matching
3009          * 802.11b mode data. */
3010
3011         for (m = 0; m < *num_modes; m++) {
3012                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3013                         return modes; /* 802.11b already included */
3014                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3015                         mode11g_idx = m;
3016         }
3017
3018         if (mode11g_idx < 0)
3019                 return modes; /* 2.4 GHz band not supported at all */
3020
3021         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3022         if (nmodes == NULL)
3023                 return modes; /* Could not add 802.11b mode */
3024
3025         mode = &nmodes[*num_modes];
3026         os_memset(mode, 0, sizeof(*mode));
3027         (*num_modes)++;
3028         modes = nmodes;
3029
3030         mode->mode = HOSTAPD_MODE_IEEE80211B;
3031
3032         mode11g = &modes[mode11g_idx];
3033         mode->num_channels = mode11g->num_channels;
3034         mode->channels = os_malloc(mode11g->num_channels *
3035                                    sizeof(struct hostapd_channel_data));
3036         if (mode->channels == NULL) {
3037                 (*num_modes)--;
3038                 return modes; /* Could not add 802.11b mode */
3039         }
3040         os_memcpy(mode->channels, mode11g->channels,
3041                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
3042
3043         mode->num_rates = 0;
3044         mode->rates = os_malloc(4 * sizeof(int));
3045         if (mode->rates == NULL) {
3046                 os_free(mode->channels);
3047                 (*num_modes)--;
3048                 return modes; /* Could not add 802.11b mode */
3049         }
3050
3051         for (i = 0; i < mode11g->num_rates; i++) {
3052                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3053                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3054                         continue;
3055                 mode->rates[mode->num_rates] = mode11g->rates[i];
3056                 mode->num_rates++;
3057                 if (mode->num_rates == 4)
3058                         break;
3059         }
3060
3061         if (mode->num_rates == 0) {
3062                 os_free(mode->channels);
3063                 os_free(mode->rates);
3064                 (*num_modes)--;
3065                 return modes; /* No 802.11b rates */
3066         }
3067
3068         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3069                    "information");
3070
3071         return modes;
3072 }
3073
3074
3075 static struct hostapd_hw_modes *
3076 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
3077 {
3078         struct i802_bss *bss = priv;
3079         struct wpa_driver_nl80211_data *drv = bss->drv;
3080         struct nl_msg *msg;
3081         struct phy_info_arg result = {
3082                 .num_modes = num_modes,
3083                 .modes = NULL,
3084         };
3085
3086         *num_modes = 0;
3087         *flags = 0;
3088
3089         msg = nlmsg_alloc();
3090         if (!msg)
3091                 return NULL;
3092
3093         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3094                     0, NL80211_CMD_GET_WIPHY, 0);
3095
3096         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3097
3098         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
3099                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
3100  nla_put_failure:
3101         return NULL;
3102 }
3103
3104
3105 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
3106                                          const void *data, size_t len,
3107                                          int encrypt)
3108 {
3109         __u8 rtap_hdr[] = {
3110                 0x00, 0x00, /* radiotap version */
3111                 0x0e, 0x00, /* radiotap length */
3112                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
3113                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
3114                 0x00,       /* padding */
3115                 0x00, 0x00, /* RX and TX flags to indicate that */
3116                 0x00, 0x00, /* this is the injected frame directly */
3117         };
3118         struct iovec iov[2] = {
3119                 {
3120                         .iov_base = &rtap_hdr,
3121                         .iov_len = sizeof(rtap_hdr),
3122                 },
3123                 {
3124                         .iov_base = (void *) data,
3125                         .iov_len = len,
3126                 }
3127         };
3128         struct msghdr msg = {
3129                 .msg_name = NULL,
3130                 .msg_namelen = 0,
3131                 .msg_iov = iov,
3132                 .msg_iovlen = 2,
3133                 .msg_control = NULL,
3134                 .msg_controllen = 0,
3135                 .msg_flags = 0,
3136         };
3137
3138         if (encrypt)
3139                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3140
3141         return sendmsg(drv->monitor_sock, &msg, 0);
3142 }
3143
3144
3145 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3146                                         size_t data_len)
3147 {
3148         struct i802_bss *bss = priv;
3149         struct wpa_driver_nl80211_data *drv = bss->drv;
3150         struct ieee80211_mgmt *mgmt;
3151         int encrypt = 1;
3152         u16 fc;
3153
3154         mgmt = (struct ieee80211_mgmt *) data;
3155         fc = le_to_host16(mgmt->frame_control);
3156
3157         if (drv->nlmode == NL80211_IFTYPE_STATION &&
3158             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3159             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3160                 /*
3161                  * The use of last_mgmt_freq is a bit of a hack,
3162                  * but it works due to the single-threaded nature
3163                  * of wpa_supplicant.
3164                  */
3165                 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq,
3166                                               data, data_len, NULL);
3167         }
3168
3169         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3170             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3171                 /*
3172                  * Only one of the authentication frame types is encrypted.
3173                  * In order for static WEP encryption to work properly (i.e.,
3174                  * to not encrypt the frame), we need to tell mac80211 about
3175                  * the frames that must not be encrypted.
3176                  */
3177                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3178                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3179                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3180                         encrypt = 0;
3181         }
3182
3183         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3184 }
3185
3186
3187 static int wpa_driver_nl80211_set_beacon(void *priv,
3188                                          const u8 *head, size_t head_len,
3189                                          const u8 *tail, size_t tail_len,
3190                                          int dtim_period, int beacon_int)
3191 {
3192         struct i802_bss *bss = priv;
3193         struct wpa_driver_nl80211_data *drv = bss->drv;
3194         struct nl_msg *msg;
3195         u8 cmd = NL80211_CMD_NEW_BEACON;
3196         int ret;
3197         int beacon_set;
3198         int ifindex = if_nametoindex(bss->ifname);
3199
3200         beacon_set = bss->beacon_set;
3201
3202         msg = nlmsg_alloc();
3203         if (!msg)
3204                 return -ENOMEM;
3205
3206         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3207                    beacon_set);
3208         if (beacon_set)
3209                 cmd = NL80211_CMD_SET_BEACON;
3210
3211         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3212                     0, cmd, 0);
3213         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3214         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3215         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3216         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3217         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3218
3219         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3220         if (ret) {
3221                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3222                            ret, strerror(-ret));
3223         } else {
3224                 bss->beacon_set = 1;
3225         }
3226         return ret;
3227  nla_put_failure:
3228         return -ENOBUFS;
3229 }
3230
3231
3232 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3233                                        int freq, int ht_enabled,
3234                                        int sec_channel_offset)
3235 {
3236         struct nl_msg *msg;
3237         int ret;
3238
3239         msg = nlmsg_alloc();
3240         if (!msg)
3241                 return -1;
3242
3243         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3244                     NL80211_CMD_SET_WIPHY, 0);
3245
3246         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3247         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3248         if (ht_enabled) {
3249                 switch (sec_channel_offset) {
3250                 case -1:
3251                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3252                                     NL80211_CHAN_HT40MINUS);
3253                         break;
3254                 case 1:
3255                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3256                                     NL80211_CHAN_HT40PLUS);
3257                         break;
3258                 default:
3259                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3260                                     NL80211_CHAN_HT20);
3261                         break;
3262                 }
3263         }
3264
3265         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3266         if (ret == 0)
3267                 return 0;
3268         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3269                    "%d (%s)", freq, ret, strerror(-ret));
3270 nla_put_failure:
3271         return -1;
3272 }
3273
3274
3275 static int wpa_driver_nl80211_sta_add(void *priv,
3276                                       struct hostapd_sta_add_params *params)
3277 {
3278         struct i802_bss *bss = priv;
3279         struct wpa_driver_nl80211_data *drv = bss->drv;
3280         struct nl_msg *msg;
3281         int ret = -ENOBUFS;
3282
3283         msg = nlmsg_alloc();
3284         if (!msg)
3285                 return -ENOMEM;
3286
3287         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3288                     0, NL80211_CMD_NEW_STATION, 0);
3289
3290         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3291         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3292         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3293         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3294                 params->supp_rates);
3295         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3296                     params->listen_interval);
3297         if (params->ht_capabilities) {
3298                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3299                         sizeof(*params->ht_capabilities),
3300                         params->ht_capabilities);
3301         }
3302
3303         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3304         if (ret)
3305                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3306                            "result: %d (%s)", ret, strerror(-ret));
3307         if (ret == -EEXIST)
3308                 ret = 0;
3309  nla_put_failure:
3310         return ret;
3311 }
3312
3313
3314 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3315 {
3316         struct i802_bss *bss = priv;
3317         struct wpa_driver_nl80211_data *drv = bss->drv;
3318         struct nl_msg *msg;
3319         int ret;
3320
3321         msg = nlmsg_alloc();
3322         if (!msg)
3323                 return -ENOMEM;
3324
3325         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3326                     0, NL80211_CMD_DEL_STATION, 0);
3327
3328         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3329                     if_nametoindex(bss->ifname));
3330         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3331
3332         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3333         if (ret == -ENOENT)
3334                 return 0;
3335         return ret;
3336  nla_put_failure:
3337         return -ENOBUFS;
3338 }
3339
3340
3341 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3342                                  int ifidx)
3343 {
3344         struct nl_msg *msg;
3345
3346         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3347
3348 #ifdef HOSTAPD
3349         /* stop listening for EAPOL on this interface */
3350         del_ifidx(drv, ifidx);
3351 #endif /* HOSTAPD */
3352
3353         msg = nlmsg_alloc();
3354         if (!msg)
3355                 goto nla_put_failure;
3356
3357         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3358                     0, NL80211_CMD_DEL_INTERFACE, 0);
3359         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3360
3361         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3362                 return;
3363  nla_put_failure:
3364         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3365 }
3366
3367
3368 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3369                                      const char *ifname,
3370                                      enum nl80211_iftype iftype,
3371                                      const u8 *addr, int wds)
3372 {
3373         struct nl_msg *msg, *flags = NULL;
3374         int ifidx;
3375         int ret = -ENOBUFS;
3376
3377         msg = nlmsg_alloc();
3378         if (!msg)
3379                 return -1;
3380
3381         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3382                     0, NL80211_CMD_NEW_INTERFACE, 0);
3383         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3384         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3385         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3386
3387         if (iftype == NL80211_IFTYPE_MONITOR) {
3388                 int err;
3389
3390                 flags = nlmsg_alloc();
3391                 if (!flags)
3392                         goto nla_put_failure;
3393
3394                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3395
3396                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3397
3398                 nlmsg_free(flags);
3399
3400                 if (err)
3401                         goto nla_put_failure;
3402         } else if (wds) {
3403                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3404         }
3405
3406         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3407         if (ret) {
3408  nla_put_failure:
3409                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3410                            ifname, ret, strerror(-ret));
3411                 return ret;
3412         }
3413
3414         ifidx = if_nametoindex(ifname);
3415         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3416                    ifname, ifidx);
3417
3418         if (ifidx <= 0)
3419                 return -1;
3420
3421 #ifdef HOSTAPD
3422         /* start listening for EAPOL on this interface */
3423         add_ifidx(drv, ifidx);
3424 #endif /* HOSTAPD */
3425
3426         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3427             linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3428                 nl80211_remove_iface(drv, ifidx);
3429                 return -1;
3430         }
3431
3432         return ifidx;
3433 }
3434
3435
3436 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3437                                 const char *ifname, enum nl80211_iftype iftype,
3438                                 const u8 *addr, int wds)
3439 {
3440         int ret;
3441
3442         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3443
3444         /* if error occured and interface exists already */
3445         if (ret == -ENFILE && if_nametoindex(ifname)) {
3446                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3447
3448                 /* Try to remove the interface that was already there. */
3449                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3450
3451                 /* Try to create the interface again */
3452                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3453                                                 wds);
3454         }
3455
3456         if (ret >= 0 && drv->disable_11b_rates)
3457                 nl80211_disable_11b_rates(drv, ret, 1);
3458
3459         return ret;
3460 }
3461
3462
3463 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3464 {
3465         struct ieee80211_hdr *hdr;
3466         u16 fc;
3467         union wpa_event_data event;
3468
3469         hdr = (struct ieee80211_hdr *) buf;
3470         fc = le_to_host16(hdr->frame_control);
3471
3472         os_memset(&event, 0, sizeof(event));
3473         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3474         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3475         event.tx_status.dst = hdr->addr1;
3476         event.tx_status.data = buf;
3477         event.tx_status.data_len = len;
3478         event.tx_status.ack = ok;
3479         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3480 }
3481
3482
3483 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3484                              u8 *buf, size_t len)
3485 {
3486         union wpa_event_data event;
3487         os_memset(&event, 0, sizeof(event));
3488         event.rx_from_unknown.frame = buf;
3489         event.rx_from_unknown.len = len;
3490         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3491 }
3492
3493
3494 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3495                          u8 *buf, size_t len, int datarate, int ssi_signal)
3496 {
3497         struct ieee80211_hdr *hdr;
3498         u16 fc;
3499         union wpa_event_data event;
3500
3501         hdr = (struct ieee80211_hdr *) buf;
3502         fc = le_to_host16(hdr->frame_control);
3503
3504         switch (WLAN_FC_GET_TYPE(fc)) {
3505         case WLAN_FC_TYPE_MGMT:
3506                 os_memset(&event, 0, sizeof(event));
3507                 event.rx_mgmt.frame = buf;
3508                 event.rx_mgmt.frame_len = len;
3509                 event.rx_mgmt.datarate = datarate;
3510                 event.rx_mgmt.ssi_signal = ssi_signal;
3511                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3512                 break;
3513         case WLAN_FC_TYPE_CTRL:
3514                 /* can only get here with PS-Poll frames */
3515                 wpa_printf(MSG_DEBUG, "CTRL");
3516                 from_unknown_sta(drv, buf, len);
3517                 break;
3518         case WLAN_FC_TYPE_DATA:
3519                 from_unknown_sta(drv, buf, len);
3520                 break;
3521         }
3522 }
3523
3524
3525 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3526 {
3527         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3528         int len;
3529         unsigned char buf[3000];
3530         struct ieee80211_radiotap_iterator iter;
3531         int ret;
3532         int datarate = 0, ssi_signal = 0;
3533         int injected = 0, failed = 0, rxflags = 0;
3534
3535         len = recv(sock, buf, sizeof(buf), 0);
3536         if (len < 0) {
3537                 perror("recv");
3538                 return;
3539         }
3540
3541         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3542                 printf("received invalid radiotap frame\n");
3543                 return;
3544         }
3545
3546         while (1) {
3547                 ret = ieee80211_radiotap_iterator_next(&iter);
3548                 if (ret == -ENOENT)
3549                         break;
3550                 if (ret) {
3551                         printf("received invalid radiotap frame (%d)\n", ret);
3552                         return;
3553                 }
3554                 switch (iter.this_arg_index) {
3555                 case IEEE80211_RADIOTAP_FLAGS:
3556                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3557                                 len -= 4;
3558                         break;
3559                 case IEEE80211_RADIOTAP_RX_FLAGS:
3560                         rxflags = 1;
3561                         break;
3562                 case IEEE80211_RADIOTAP_TX_FLAGS:
3563                         injected = 1;
3564                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3565                                         IEEE80211_RADIOTAP_F_TX_FAIL;
3566                         break;
3567                 case IEEE80211_RADIOTAP_DATA_RETRIES:
3568                         break;
3569                 case IEEE80211_RADIOTAP_CHANNEL:
3570                         /* TODO: convert from freq/flags to channel number */
3571                         break;
3572                 case IEEE80211_RADIOTAP_RATE:
3573                         datarate = *iter.this_arg * 5;
3574                         break;
3575                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3576                         ssi_signal = *iter.this_arg;
3577                         break;
3578                 }
3579         }
3580
3581         if (rxflags && injected)
3582                 return;
3583
3584         if (!injected)
3585                 handle_frame(drv, buf + iter.max_length,
3586                              len - iter.max_length, datarate, ssi_signal);
3587         else
3588                 handle_tx_callback(drv->ctx, buf + iter.max_length,
3589                                    len - iter.max_length, !failed);
3590 }
3591
3592
3593 /*
3594  * we post-process the filter code later and rewrite
3595  * this to the offset to the last instruction
3596  */
3597 #define PASS    0xFF
3598 #define FAIL    0xFE
3599
3600 static struct sock_filter msock_filter_insns[] = {
3601         /*
3602          * do a little-endian load of the radiotap length field
3603          */
3604         /* load lower byte into A */
3605         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
3606         /* put it into X (== index register) */
3607         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3608         /* load upper byte into A */
3609         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
3610         /* left-shift it by 8 */
3611         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3612         /* or with X */
3613         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3614         /* put result into X */
3615         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3616
3617         /*
3618          * Allow management frames through, this also gives us those
3619          * management frames that we sent ourselves with status
3620          */
3621         /* load the lower byte of the IEEE 802.11 frame control field */
3622         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
3623         /* mask off frame type and version */
3624         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3625         /* accept frame if it's both 0, fall through otherwise */
3626         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3627
3628         /*
3629          * TODO: add a bit to radiotap RX flags that indicates
3630          * that the sending station is not associated, then
3631          * add a filter here that filters on our DA and that flag
3632          * to allow us to deauth frames to that bad station.
3633          *
3634          * Not a regression -- we didn't do it before either.
3635          */
3636
3637 #if 0
3638         /*
3639          * drop non-data frames
3640          */
3641         /* load the lower byte of the frame control field */
3642         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3643         /* mask off QoS bit */
3644         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
3645         /* drop non-data frames */
3646         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
3647 #endif
3648         /* load the upper byte of the frame control field */
3649         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
3650         /* mask off toDS/fromDS */
3651         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
3652         /* accept WDS frames */
3653         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
3654
3655         /*
3656          * add header length to index
3657          */
3658         /* load the lower byte of the frame control field */
3659         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3660         /* mask off QoS bit */
3661         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
3662         /* right shift it by 6 to give 0 or 2 */
3663         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
3664         /* add data frame header length */
3665         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
3666         /* add index, was start of 802.11 header */
3667         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
3668         /* move to index, now start of LL header */
3669         BPF_STMT(BPF_MISC | BPF_TAX, 0),
3670
3671         /*
3672          * Accept empty data frames, we use those for
3673          * polling activity.
3674          */
3675         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
3676         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3677
3678         /*
3679          * Accept EAPOL frames
3680          */
3681         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
3682         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3683         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
3684         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3685
3686         /* keep these last two statements or change the code below */
3687         /* return 0 == "DROP" */
3688         BPF_STMT(BPF_RET | BPF_K, 0),
3689         /* return ~0 == "keep all" */
3690         BPF_STMT(BPF_RET | BPF_K, ~0),
3691 };
3692
3693 static struct sock_fprog msock_filter = {
3694         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3695         .filter = msock_filter_insns,
3696 };
3697
3698
3699 static int add_monitor_filter(int s)
3700 {
3701         int idx;
3702
3703         /* rewrite all PASS/FAIL jump offsets */
3704         for (idx = 0; idx < msock_filter.len; idx++) {
3705                 struct sock_filter *insn = &msock_filter_insns[idx];
3706
3707                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3708                         if (insn->code == (BPF_JMP|BPF_JA)) {
3709                                 if (insn->k == PASS)
3710                                         insn->k = msock_filter.len - idx - 2;
3711                                 else if (insn->k == FAIL)
3712                                         insn->k = msock_filter.len - idx - 3;
3713                         }
3714
3715                         if (insn->jt == PASS)
3716                                 insn->jt = msock_filter.len - idx - 2;
3717                         else if (insn->jt == FAIL)
3718                                 insn->jt = msock_filter.len - idx - 3;
3719
3720                         if (insn->jf == PASS)
3721                                 insn->jf = msock_filter.len - idx - 2;
3722                         else if (insn->jf == FAIL)
3723                                 insn->jf = msock_filter.len - idx - 3;
3724                 }
3725         }
3726
3727         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3728                        &msock_filter, sizeof(msock_filter))) {
3729                 perror("SO_ATTACH_FILTER");
3730                 return -1;
3731         }
3732
3733         return 0;
3734 }
3735
3736
3737 static void nl80211_remove_monitor_interface(
3738         struct wpa_driver_nl80211_data *drv)
3739 {
3740         if (drv->monitor_ifidx >= 0) {
3741                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3742                 drv->monitor_ifidx = -1;
3743         }
3744         if (drv->monitor_sock >= 0) {
3745                 eloop_unregister_read_sock(drv->monitor_sock);
3746                 close(drv->monitor_sock);
3747                 drv->monitor_sock = -1;
3748         }
3749 }
3750
3751
3752 static int
3753 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3754 {
3755         char buf[IFNAMSIZ];
3756         struct sockaddr_ll ll;
3757         int optval;
3758         socklen_t optlen;
3759
3760         snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3761         buf[IFNAMSIZ - 1] = '\0';
3762
3763         drv->monitor_ifidx =
3764                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3765                                      0);
3766
3767         if (drv->monitor_ifidx < 0)
3768                 return -1;
3769
3770         if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3771                 goto error;
3772
3773         memset(&ll, 0, sizeof(ll));
3774         ll.sll_family = AF_PACKET;
3775         ll.sll_ifindex = drv->monitor_ifidx;
3776         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3777         if (drv->monitor_sock < 0) {
3778                 perror("socket[PF_PACKET,SOCK_RAW]");
3779                 goto error;
3780         }
3781
3782         if (add_monitor_filter(drv->monitor_sock)) {
3783                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3784                            "interface; do filtering in user space");
3785                 /* This works, but will cost in performance. */
3786         }
3787
3788         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3789                 perror("monitor socket bind");
3790                 goto error;
3791         }
3792
3793         optlen = sizeof(optval);
3794         optval = 20;
3795         if (setsockopt
3796             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3797                 perror("Failed to set socket priority");
3798                 goto error;
3799         }
3800
3801         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3802                                      drv, NULL)) {
3803                 printf("Could not register monitor read socket\n");
3804                 goto error;
3805         }
3806
3807         return 0;
3808  error:
3809         nl80211_remove_monitor_interface(drv);
3810         return -1;
3811 }
3812
3813
3814 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3815
3816 static int wpa_driver_nl80211_hapd_send_eapol(
3817         void *priv, const u8 *addr, const u8 *data,
3818         size_t data_len, int encrypt, const u8 *own_addr)
3819 {
3820         struct i802_bss *bss = priv;
3821         struct wpa_driver_nl80211_data *drv = bss->drv;
3822         struct ieee80211_hdr *hdr;
3823         size_t len;
3824         u8 *pos;
3825         int res;
3826 #if 0 /* FIX */
3827         int qos = sta->flags & WPA_STA_WMM;
3828 #else
3829         int qos = 0;
3830 #endif
3831
3832         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3833                 data_len;
3834         hdr = os_zalloc(len);
3835         if (hdr == NULL) {
3836                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3837                        (unsigned long) len);
3838                 return -1;
3839         }
3840
3841         hdr->frame_control =
3842                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3843         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3844         if (encrypt)
3845                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3846 #if 0 /* To be enabled if qos determination is added above */
3847         if (qos) {
3848                 hdr->frame_control |=
3849                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3850         }
3851 #endif
3852
3853         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3854         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3855         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3856         pos = (u8 *) (hdr + 1);
3857
3858 #if 0 /* To be enabled if qos determination is added above */
3859         if (qos) {
3860                 /* add an empty QoS header if needed */
3861                 pos[0] = 0;
3862                 pos[1] = 0;
3863                 pos += 2;
3864         }
3865 #endif
3866
3867         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3868         pos += sizeof(rfc1042_header);
3869         WPA_PUT_BE16(pos, ETH_P_PAE);
3870         pos += 2;
3871         memcpy(pos, data, data_len);
3872
3873         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3874         if (res < 0) {
3875                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3876                            "failed: %d (%s)",
3877                            (unsigned long) len, errno, strerror(errno));
3878         }
3879         os_free(hdr);
3880
3881         return res;
3882 }
3883
3884
3885 static u32 sta_flags_nl80211(int flags)
3886 {
3887         u32 f = 0;
3888
3889         if (flags & WPA_STA_AUTHORIZED)
3890                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3891         if (flags & WPA_STA_WMM)
3892                 f |= BIT(NL80211_STA_FLAG_WME);
3893         if (flags & WPA_STA_SHORT_PREAMBLE)
3894                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3895         if (flags & WPA_STA_MFP)
3896                 f |= BIT(NL80211_STA_FLAG_MFP);
3897
3898         return f;
3899 }
3900
3901
3902 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3903                                             int total_flags,
3904                                             int flags_or, int flags_and)
3905 {
3906         struct i802_bss *bss = priv;
3907         struct wpa_driver_nl80211_data *drv = bss->drv;
3908         struct nl_msg *msg, *flags = NULL;
3909         struct nl80211_sta_flag_update upd;
3910
3911         msg = nlmsg_alloc();
3912         if (!msg)
3913                 return -ENOMEM;
3914
3915         flags = nlmsg_alloc();
3916         if (!flags) {
3917                 nlmsg_free(msg);
3918                 return -ENOMEM;
3919         }
3920
3921         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3922                     0, NL80211_CMD_SET_STATION, 0);
3923
3924         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3925                     if_nametoindex(bss->ifname));
3926         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3927
3928         /*
3929          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3930          * can be removed eventually.
3931          */
3932         if (total_flags & WPA_STA_AUTHORIZED)
3933                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3934
3935         if (total_flags & WPA_STA_WMM)
3936                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3937
3938         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3939                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3940
3941         if (total_flags & WPA_STA_MFP)
3942                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3943
3944         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3945                 goto nla_put_failure;
3946
3947         os_memset(&upd, 0, sizeof(upd));
3948         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3949         upd.set = sta_flags_nl80211(flags_or);
3950         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3951
3952         nlmsg_free(flags);
3953
3954         return send_and_recv_msgs(drv, msg, NULL, NULL);
3955  nla_put_failure:
3956         nlmsg_free(flags);
3957         return -ENOBUFS;
3958 }
3959
3960
3961 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3962                                  struct wpa_driver_associate_params *params)
3963 {
3964         if (params->p2p)
3965                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3966                            "group (GO)");
3967         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3968             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3969                 nl80211_remove_monitor_interface(drv);
3970                 return -1;
3971         }
3972
3973         /* TODO: setup monitor interface (and add code somewhere to remove this
3974          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3975
3976         return 0;
3977 }
3978
3979
3980 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3981 {
3982         struct nl_msg *msg;
3983         int ret = -1;
3984
3985         msg = nlmsg_alloc();
3986         if (!msg)
3987                 return -1;
3988
3989         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3990                     NL80211_CMD_LEAVE_IBSS, 0);
3991         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3992         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3993         msg = NULL;
3994         if (ret) {
3995                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3996                            "(%s)", ret, strerror(-ret));
3997                 goto nla_put_failure;
3998         }
3999
4000         ret = 0;
4001         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
4002
4003 nla_put_failure:
4004         nlmsg_free(msg);
4005         return ret;
4006 }
4007
4008
4009 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4010                                    struct wpa_driver_associate_params *params)
4011 {
4012         struct nl_msg *msg;
4013         int ret = -1;
4014         int count = 0;
4015
4016         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4017
4018         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
4019                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4020                            "IBSS mode");
4021                 return -1;
4022         }
4023
4024 retry:
4025         msg = nlmsg_alloc();
4026         if (!msg)
4027                 return -1;
4028
4029         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4030                     NL80211_CMD_JOIN_IBSS, 0);
4031         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4032
4033         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4034                 goto nla_put_failure;
4035
4036         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4037                           params->ssid, params->ssid_len);
4038         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4039                 params->ssid);
4040         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4041         drv->ssid_len = params->ssid_len;
4042
4043         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4044         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4045
4046         ret = nl80211_set_conn_keys(params, msg);
4047         if (ret)
4048                 goto nla_put_failure;
4049
4050         if (params->wpa_ie) {
4051                 wpa_hexdump(MSG_DEBUG,
4052                             "  * Extra IEs for Beacon/Probe Response frames",
4053                             params->wpa_ie, params->wpa_ie_len);
4054                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4055                         params->wpa_ie);
4056         }
4057
4058         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4059         msg = NULL;
4060         if (ret) {
4061                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4062                            ret, strerror(-ret));
4063                 count++;
4064                 if (ret == -EALREADY && count == 1) {
4065                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4066                                    "forced leave");
4067                         nl80211_leave_ibss(drv);
4068                         nlmsg_free(msg);
4069                         goto retry;
4070                 }
4071
4072                 goto nla_put_failure;
4073         }
4074         ret = 0;
4075         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
4076
4077 nla_put_failure:
4078         nlmsg_free(msg);
4079         return ret;
4080 }
4081
4082
4083 static int wpa_driver_nl80211_connect(
4084         struct wpa_driver_nl80211_data *drv,
4085         struct wpa_driver_associate_params *params)
4086 {
4087         struct nl_msg *msg;
4088         enum nl80211_auth_type type;
4089         int ret = 0;
4090
4091         msg = nlmsg_alloc();
4092         if (!msg)
4093                 return -1;
4094
4095         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4096         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4097                     NL80211_CMD_CONNECT, 0);
4098
4099         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4100         if (params->bssid) {
4101                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4102                            MAC2STR(params->bssid));
4103                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4104         }
4105         if (params->freq) {
4106                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4107                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4108         }
4109         if (params->ssid) {
4110                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4111                                   params->ssid, params->ssid_len);
4112                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4113                         params->ssid);
4114                 if (params->ssid_len > sizeof(drv->ssid))
4115                         goto nla_put_failure;
4116                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4117                 drv->ssid_len = params->ssid_len;
4118         }
4119         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4120         if (params->wpa_ie)
4121                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4122                         params->wpa_ie);
4123
4124         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4125                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4126         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4127                 type = NL80211_AUTHTYPE_SHARED_KEY;
4128         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4129                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4130         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4131                 type = NL80211_AUTHTYPE_FT;
4132         else
4133                 goto nla_put_failure;
4134
4135         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4136         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4137
4138         if (params->wpa_ie && params->wpa_ie_len) {
4139                 enum nl80211_wpa_versions ver;
4140
4141                 if (params->wpa_ie[0] == WLAN_EID_RSN)
4142                         ver = NL80211_WPA_VERSION_2;
4143                 else
4144                         ver = NL80211_WPA_VERSION_1;
4145
4146                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
4147                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4148         }
4149
4150         if (params->pairwise_suite != CIPHER_NONE) {
4151                 int cipher;
4152
4153                 switch (params->pairwise_suite) {
4154                 case CIPHER_WEP40:
4155                         cipher = WLAN_CIPHER_SUITE_WEP40;
4156                         break;
4157                 case CIPHER_WEP104:
4158                         cipher = WLAN_CIPHER_SUITE_WEP104;
4159                         break;
4160                 case CIPHER_CCMP:
4161                         cipher = WLAN_CIPHER_SUITE_CCMP;
4162                         break;
4163                 case CIPHER_TKIP:
4164                 default:
4165                         cipher = WLAN_CIPHER_SUITE_TKIP;
4166                         break;
4167                 }
4168                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4169         }
4170
4171         if (params->group_suite != CIPHER_NONE) {
4172                 int cipher;
4173
4174                 switch (params->group_suite) {
4175                 case CIPHER_WEP40:
4176                         cipher = WLAN_CIPHER_SUITE_WEP40;
4177                         break;
4178                 case CIPHER_WEP104:
4179                         cipher = WLAN_CIPHER_SUITE_WEP104;
4180                         break;
4181                 case CIPHER_CCMP:
4182                         cipher = WLAN_CIPHER_SUITE_CCMP;
4183                         break;
4184                 case CIPHER_TKIP:
4185                 default:
4186                         cipher = WLAN_CIPHER_SUITE_TKIP;
4187                         break;
4188                 }
4189                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4190         }
4191
4192         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4193             params->key_mgmt_suite == KEY_MGMT_PSK) {
4194                 int mgmt = WLAN_AKM_SUITE_PSK;
4195
4196                 switch (params->key_mgmt_suite) {
4197                 case KEY_MGMT_802_1X:
4198                         mgmt = WLAN_AKM_SUITE_8021X;
4199                         break;
4200                 case KEY_MGMT_PSK:
4201                 default:
4202                         mgmt = WLAN_AKM_SUITE_PSK;
4203                         break;
4204                 }
4205                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4206         }
4207
4208         ret = nl80211_set_conn_keys(params, msg);
4209         if (ret)
4210                 goto nla_put_failure;
4211
4212         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4213         msg = NULL;
4214         if (ret) {
4215                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4216                            "(%s)", ret, strerror(-ret));
4217                 goto nla_put_failure;
4218         }
4219         ret = 0;
4220         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4221
4222 nla_put_failure:
4223         nlmsg_free(msg);
4224         return ret;
4225
4226 }
4227
4228
4229 static int wpa_driver_nl80211_associate(
4230         void *priv, struct wpa_driver_associate_params *params)
4231 {
4232         struct i802_bss *bss = priv;
4233         struct wpa_driver_nl80211_data *drv = bss->drv;
4234         int ret = -1;
4235         struct nl_msg *msg;
4236
4237         if (params->mode == IEEE80211_MODE_AP)
4238                 return wpa_driver_nl80211_ap(drv, params);
4239
4240         if (params->mode == IEEE80211_MODE_IBSS)
4241                 return wpa_driver_nl80211_ibss(drv, params);
4242
4243         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4244                 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4245                         return -1;
4246                 return wpa_driver_nl80211_connect(drv, params);
4247         }
4248
4249         drv->associated = 0;
4250
4251         msg = nlmsg_alloc();
4252         if (!msg)
4253                 return -1;
4254
4255         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4256                    drv->ifindex);
4257         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4258                     NL80211_CMD_ASSOCIATE, 0);
4259
4260         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4261         if (params->bssid) {
4262                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4263                            MAC2STR(params->bssid));
4264                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4265         }
4266         if (params->freq) {
4267                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4268                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4269                 drv->assoc_freq = params->freq;
4270         } else
4271                 drv->assoc_freq = 0;
4272         if (params->ssid) {
4273                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4274                                   params->ssid, params->ssid_len);
4275                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4276                         params->ssid);
4277                 if (params->ssid_len > sizeof(drv->ssid))
4278                         goto nla_put_failure;
4279                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4280                 drv->ssid_len = params->ssid_len;
4281         }
4282         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4283         if (params->wpa_ie)
4284                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4285                         params->wpa_ie);
4286
4287 #ifdef CONFIG_IEEE80211W
4288         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4289                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4290 #endif /* CONFIG_IEEE80211W */
4291
4292         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4293
4294         if (params->prev_bssid) {
4295                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4296                            MAC2STR(params->prev_bssid));
4297                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4298                         params->prev_bssid);
4299         }
4300
4301         if (params->p2p)
4302                 wpa_printf(MSG_DEBUG, "  * P2P group");
4303
4304         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4305         msg = NULL;
4306         if (ret) {
4307                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4308                            "(%s)", ret, strerror(-ret));
4309                 nl80211_dump_scan(drv);
4310                 goto nla_put_failure;
4311         }
4312         ret = 0;
4313         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4314                    "successfully");
4315
4316 nla_put_failure:
4317         nlmsg_free(msg);
4318         return ret;
4319 }
4320
4321
4322 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4323                             int ifindex, int mode)
4324 {
4325         struct nl_msg *msg;
4326         int ret = -ENOBUFS;
4327
4328         msg = nlmsg_alloc();
4329         if (!msg)
4330                 return -ENOMEM;
4331
4332         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4333                     0, NL80211_CMD_SET_INTERFACE, 0);
4334         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4335         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4336
4337         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4338         if (!ret)
4339                 return 0;
4340 nla_put_failure:
4341         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4342                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4343         return ret;
4344 }
4345
4346
4347 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4348 {
4349         struct i802_bss *bss = priv;
4350         struct wpa_driver_nl80211_data *drv = bss->drv;
4351         int ret = -1;
4352         int nlmode;
4353         int i;
4354
4355         switch (mode) {
4356         case 0:
4357                 nlmode = NL80211_IFTYPE_STATION;
4358                 break;
4359         case 1:
4360                 nlmode = NL80211_IFTYPE_ADHOC;
4361                 break;
4362         case 2:
4363                 nlmode = NL80211_IFTYPE_AP;
4364                 break;
4365         default:
4366                 return -1;
4367         }
4368
4369         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4370                 drv->nlmode = nlmode;
4371                 ret = 0;
4372                 goto done;
4373         }
4374
4375         if (nlmode == drv->nlmode) {
4376                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4377                            "requested mode - ignore error");
4378                 ret = 0;
4379                 goto done; /* Already in the requested mode */
4380         }
4381
4382         /* mac80211 doesn't allow mode changes while the device is up, so
4383          * take the device down, try to set the mode again, and bring the
4384          * device back up.
4385          */
4386         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4387                    "interface down");
4388         for (i = 0; i < 10; i++) {
4389                 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4390                     0) {
4391                         /* Try to set the mode again while the interface is
4392                          * down */
4393                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4394                         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4395                                                   1))
4396                                 ret = -1;
4397                         if (!ret)
4398                                 break;
4399                 } else
4400                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4401                                    "interface down");
4402                 os_sleep(0, 100000);
4403         }
4404
4405         if (!ret) {
4406                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4407                            "interface is down");
4408                 drv->nlmode = nlmode;
4409         }
4410
4411 done:
4412         if (!ret && nlmode == NL80211_IFTYPE_AP) {
4413                 /* Setup additional AP mode functionality if needed */
4414                 if (drv->monitor_ifidx < 0 &&
4415                     nl80211_create_monitor_interface(drv))
4416                         return -1;
4417         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4418                 /* Remove additional AP mode functionality */
4419                 nl80211_remove_monitor_interface(drv);
4420                 bss->beacon_set = 0;
4421         }
4422
4423         if (ret)
4424                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4425                            "from %d failed", nlmode, drv->nlmode);
4426
4427         return ret;
4428 }
4429
4430
4431 static int wpa_driver_nl80211_get_capa(void *priv,
4432                                        struct wpa_driver_capa *capa)
4433 {
4434         struct i802_bss *bss = priv;
4435         struct wpa_driver_nl80211_data *drv = bss->drv;
4436         if (!drv->has_capability)
4437                 return -1;
4438         os_memcpy(capa, &drv->capa, sizeof(*capa));
4439         return 0;
4440 }
4441
4442
4443 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4444 {
4445         struct i802_bss *bss = priv;
4446         struct wpa_driver_nl80211_data *drv = bss->drv;
4447
4448         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4449                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4450         drv->operstate = state;
4451         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4452                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4453 }
4454
4455
4456 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4457 {
4458         struct i802_bss *bss = priv;
4459         struct wpa_driver_nl80211_data *drv = bss->drv;
4460         struct nl_msg *msg;
4461         struct nl80211_sta_flag_update upd;
4462
4463         msg = nlmsg_alloc();
4464         if (!msg)
4465                 return -ENOMEM;
4466
4467         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4468                     0, NL80211_CMD_SET_STATION, 0);
4469
4470         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4471                     if_nametoindex(bss->ifname));
4472         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4473
4474         os_memset(&upd, 0, sizeof(upd));
4475         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4476         if (authorized)
4477                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4478         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4479
4480         return send_and_recv_msgs(drv, msg, NULL, NULL);
4481  nla_put_failure:
4482         return -ENOBUFS;
4483 }
4484
4485
4486 #ifdef HOSTAPD
4487
4488 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4489 {
4490         int i;
4491         int *old;
4492
4493         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4494                    ifidx);
4495         for (i = 0; i < drv->num_if_indices; i++) {
4496                 if (drv->if_indices[i] == 0) {
4497                         drv->if_indices[i] = ifidx;
4498                         return;
4499                 }
4500         }
4501
4502         if (drv->if_indices != drv->default_if_indices)
4503                 old = drv->if_indices;
4504         else
4505                 old = NULL;
4506
4507         drv->if_indices = os_realloc(old,
4508                                      sizeof(int) * (drv->num_if_indices + 1));
4509         if (!drv->if_indices) {
4510                 if (!old)
4511                         drv->if_indices = drv->default_if_indices;
4512                 else
4513                         drv->if_indices = old;
4514                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4515                            "interfaces");
4516                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4517                 return;
4518         } else if (!old)
4519                 os_memcpy(drv->if_indices, drv->default_if_indices,
4520                           sizeof(drv->default_if_indices));
4521         drv->if_indices[drv->num_if_indices] = ifidx;
4522         drv->num_if_indices++;
4523 }
4524
4525
4526 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4527 {
4528         int i;
4529
4530         for (i = 0; i < drv->num_if_indices; i++) {
4531                 if (drv->if_indices[i] == ifidx) {
4532                         drv->if_indices[i] = 0;
4533                         break;
4534                 }
4535         }
4536 }
4537
4538
4539 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4540 {
4541         int i;
4542
4543         for (i = 0; i < drv->num_if_indices; i++)
4544                 if (drv->if_indices[i] == ifidx)
4545                         return 1;
4546
4547         return 0;
4548 }
4549
4550
4551 static inline int min_int(int a, int b)
4552 {
4553         if (a < b)
4554                 return a;
4555         return b;
4556 }
4557
4558
4559 static int get_key_handler(struct nl_msg *msg, void *arg)
4560 {
4561         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4562         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4563
4564         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4565                   genlmsg_attrlen(gnlh, 0), NULL);
4566
4567         /*
4568          * TODO: validate the key index and mac address!
4569          * Otherwise, there's a race condition as soon as
4570          * the kernel starts sending key notifications.
4571          */
4572
4573         if (tb[NL80211_ATTR_KEY_SEQ])
4574                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4575                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4576         return NL_SKIP;
4577 }
4578
4579
4580 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4581                            int idx, u8 *seq)
4582 {
4583         struct i802_bss *bss = priv;
4584         struct wpa_driver_nl80211_data *drv = bss->drv;
4585         struct nl_msg *msg;
4586
4587         msg = nlmsg_alloc();
4588         if (!msg)
4589                 return -ENOMEM;
4590
4591         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4592                     0, NL80211_CMD_GET_KEY, 0);
4593
4594         if (addr)
4595                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4596         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4597         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4598
4599         memset(seq, 0, 6);
4600
4601         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4602  nla_put_failure:
4603         return -ENOBUFS;
4604 }
4605
4606
4607 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4608                               int mode)
4609 {
4610         struct i802_bss *bss = priv;
4611         struct wpa_driver_nl80211_data *drv = bss->drv;
4612         struct nl_msg *msg;
4613         u8 rates[NL80211_MAX_SUPP_RATES];
4614         u8 rates_len = 0;
4615         int i;
4616
4617         msg = nlmsg_alloc();
4618         if (!msg)
4619                 return -ENOMEM;
4620
4621         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4622                     NL80211_CMD_SET_BSS, 0);
4623
4624         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4625                 rates[rates_len++] = basic_rates[i] / 5;
4626
4627         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4628
4629         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4630
4631         return send_and_recv_msgs(drv, msg, NULL, NULL);
4632  nla_put_failure:
4633         return -ENOBUFS;
4634 }
4635
4636 #endif /* HOSTAPD */
4637
4638
4639 /* Set kernel driver on given frequency (MHz) */
4640 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4641 {
4642         struct i802_bss *bss = priv;
4643         struct wpa_driver_nl80211_data *drv = bss->drv;
4644         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4645                                            freq->sec_channel_offset);
4646 }
4647
4648
4649 #ifdef HOSTAPD
4650
4651 static int i802_set_rts(void *priv, int rts)
4652 {
4653         struct i802_bss *bss = priv;
4654         struct wpa_driver_nl80211_data *drv = bss->drv;
4655         struct nl_msg *msg;
4656         int ret = -ENOBUFS;
4657         u32 val;
4658
4659         msg = nlmsg_alloc();
4660         if (!msg)
4661                 return -ENOMEM;
4662
4663         if (rts >= 2347)
4664                 val = (u32) -1;
4665         else
4666                 val = rts;
4667
4668         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4669                     0, NL80211_CMD_SET_WIPHY, 0);
4670         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4671         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4672
4673         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4674         if (!ret)
4675                 return 0;
4676 nla_put_failure:
4677         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4678                    "%d (%s)", rts, ret, strerror(-ret));
4679         return ret;
4680 }
4681
4682
4683 static int i802_set_frag(void *priv, int frag)
4684 {
4685         struct i802_bss *bss = priv;
4686         struct wpa_driver_nl80211_data *drv = bss->drv;
4687         struct nl_msg *msg;
4688         int ret = -ENOBUFS;
4689         u32 val;
4690
4691         msg = nlmsg_alloc();
4692         if (!msg)
4693                 return -ENOMEM;
4694
4695         if (frag >= 2346)
4696                 val = (u32) -1;
4697         else
4698                 val = frag;
4699
4700         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4701                     0, NL80211_CMD_SET_WIPHY, 0);
4702         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4703         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4704
4705         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4706         if (!ret)
4707                 return 0;
4708 nla_put_failure:
4709         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4710                    "%d: %d (%s)", frag, ret, strerror(-ret));
4711         return ret;
4712 }
4713
4714
4715 static int i802_flush(void *priv)
4716 {
4717         struct i802_bss *bss = priv;
4718         struct wpa_driver_nl80211_data *drv = bss->drv;
4719         struct nl_msg *msg;
4720
4721         msg = nlmsg_alloc();
4722         if (!msg)
4723                 return -1;
4724
4725         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4726                     0, NL80211_CMD_DEL_STATION, 0);
4727
4728         /*
4729          * XXX: FIX! this needs to flush all VLANs too
4730          */
4731         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4732                     if_nametoindex(bss->ifname));
4733
4734         return send_and_recv_msgs(drv, msg, NULL, NULL);
4735  nla_put_failure:
4736         return -ENOBUFS;
4737 }
4738
4739
4740 static int get_sta_handler(struct nl_msg *msg, void *arg)
4741 {
4742         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4743         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4744         struct hostap_sta_driver_data *data = arg;
4745         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4746         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4747                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4748                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4749                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4750                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4751                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4752         };
4753
4754         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4755                   genlmsg_attrlen(gnlh, 0), NULL);
4756
4757         /*
4758          * TODO: validate the interface and mac address!
4759          * Otherwise, there's a race condition as soon as
4760          * the kernel starts sending station notifications.
4761          */
4762
4763         if (!tb[NL80211_ATTR_STA_INFO]) {
4764                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4765                 return NL_SKIP;
4766         }
4767         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4768                              tb[NL80211_ATTR_STA_INFO],
4769                              stats_policy)) {
4770                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4771                 return NL_SKIP;
4772         }
4773
4774         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4775                 data->inactive_msec =
4776                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4777         if (stats[NL80211_STA_INFO_RX_BYTES])
4778                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4779         if (stats[NL80211_STA_INFO_TX_BYTES])
4780                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4781         if (stats[NL80211_STA_INFO_RX_PACKETS])
4782                 data->rx_packets =
4783                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4784         if (stats[NL80211_STA_INFO_TX_PACKETS])
4785                 data->tx_packets =
4786                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4787
4788         return NL_SKIP;
4789 }
4790
4791 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4792                               const u8 *addr)
4793 {
4794         struct i802_bss *bss = priv;
4795         struct wpa_driver_nl80211_data *drv = bss->drv;
4796         struct nl_msg *msg;
4797
4798         os_memset(data, 0, sizeof(*data));
4799         msg = nlmsg_alloc();
4800         if (!msg)
4801                 return -ENOMEM;
4802
4803         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4804                     0, NL80211_CMD_GET_STATION, 0);
4805
4806         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4807         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4808
4809         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4810  nla_put_failure:
4811         return -ENOBUFS;
4812 }
4813
4814
4815 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4816                                     int cw_min, int cw_max, int burst_time)
4817 {
4818         struct i802_bss *bss = priv;
4819         struct wpa_driver_nl80211_data *drv = bss->drv;
4820         struct nl_msg *msg;
4821         struct nlattr *txq, *params;
4822
4823         msg = nlmsg_alloc();
4824         if (!msg)
4825                 return -1;
4826
4827         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4828                     0, NL80211_CMD_SET_WIPHY, 0);
4829
4830         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4831
4832         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4833         if (!txq)
4834                 goto nla_put_failure;
4835
4836         /* We are only sending parameters for a single TXQ at a time */
4837         params = nla_nest_start(msg, 1);
4838         if (!params)
4839                 goto nla_put_failure;
4840
4841         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4842         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4843          * 32 usec, so need to convert the value here. */
4844         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4845         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4846         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4847         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4848
4849         nla_nest_end(msg, params);
4850
4851         nla_nest_end(msg, txq);
4852
4853         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4854                 return 0;
4855  nla_put_failure:
4856         return -1;
4857 }
4858
4859
4860 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4861 {
4862         struct i802_bss *bss = priv;
4863         struct wpa_driver_nl80211_data *drv = bss->drv;
4864         struct nl_msg *msg;
4865
4866         msg = nlmsg_alloc();
4867         if (!msg)
4868                 return -ENOMEM;
4869
4870         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4871                     NL80211_CMD_SET_BSS, 0);
4872
4873         if (cts >= 0)
4874                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4875         if (preamble >= 0)
4876                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4877         if (slot >= 0)
4878                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4879
4880         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4881
4882         return send_and_recv_msgs(drv, msg, NULL, NULL);
4883  nla_put_failure:
4884         return -ENOBUFS;
4885 }
4886
4887
4888 static int i802_set_cts_protect(void *priv, int value)
4889 {
4890         return i802_set_bss(priv, value, -1, -1);
4891 }
4892
4893
4894 static int i802_set_preamble(void *priv, int value)
4895 {
4896         return i802_set_bss(priv, -1, value, -1);
4897 }
4898
4899
4900 static int i802_set_short_slot_time(void *priv, int value)
4901 {
4902         return i802_set_bss(priv, -1, -1, value);
4903 }
4904
4905
4906 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4907                              const char *ifname, int vlan_id)
4908 {
4909         struct i802_bss *bss = priv;
4910         struct wpa_driver_nl80211_data *drv = bss->drv;
4911         struct nl_msg *msg;
4912         int ret = -ENOBUFS;
4913
4914         msg = nlmsg_alloc();
4915         if (!msg)
4916                 return -ENOMEM;
4917
4918         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4919                     0, NL80211_CMD_SET_STATION, 0);
4920
4921         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4922                     if_nametoindex(bss->ifname));
4923         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4924         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4925                     if_nametoindex(ifname));
4926
4927         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4928         if (ret < 0) {
4929                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4930                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4931                            MAC2STR(addr), ifname, vlan_id, ret,
4932                            strerror(-ret));
4933         }
4934  nla_put_failure:
4935         return ret;
4936 }
4937
4938
4939 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4940 {
4941         struct i802_bss *bss = priv;
4942         struct wpa_driver_nl80211_data *drv = bss->drv;
4943         char name[IFNAMSIZ + 1];
4944
4945         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4946         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4947                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4948         if (val) {
4949                 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4950                                          NULL, 1) < 0)
4951                         return -1;
4952                 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4953                 return i802_set_sta_vlan(priv, addr, name, 0);
4954         } else {
4955                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4956                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4957                                                     name);
4958         }
4959 }
4960
4961
4962 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4963 {
4964         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4965         struct sockaddr_ll lladdr;
4966         unsigned char buf[3000];
4967         int len;
4968         socklen_t fromlen = sizeof(lladdr);
4969
4970         len = recvfrom(sock, buf, sizeof(buf), 0,
4971                        (struct sockaddr *)&lladdr, &fromlen);
4972         if (len < 0) {
4973                 perror("recv");
4974                 return;
4975         }
4976
4977         if (have_ifidx(drv, lladdr.sll_ifindex))
4978                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4979 }
4980
4981
4982 static int i802_get_inact_sec(void *priv, const u8 *addr)
4983 {
4984         struct hostap_sta_driver_data data;
4985         int ret;
4986
4987         data.inactive_msec = (unsigned long) -1;
4988         ret = i802_read_sta_data(priv, &data, addr);
4989         if (ret || data.inactive_msec == (unsigned long) -1)
4990                 return -1;
4991         return data.inactive_msec / 1000;
4992 }
4993
4994
4995 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4996 {
4997 #if 0
4998         /* TODO */
4999 #endif
5000         return 0;
5001 }
5002
5003
5004 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5005                            int reason)
5006 {
5007         struct i802_bss *bss = priv;
5008         struct ieee80211_mgmt mgmt;
5009
5010         memset(&mgmt, 0, sizeof(mgmt));
5011         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5012                                           WLAN_FC_STYPE_DEAUTH);
5013         memcpy(mgmt.da, addr, ETH_ALEN);
5014         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5015         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5016         mgmt.u.deauth.reason_code = host_to_le16(reason);
5017         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5018                                             IEEE80211_HDRLEN +
5019                                             sizeof(mgmt.u.deauth));
5020 }
5021
5022
5023 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5024                              int reason)
5025 {
5026         struct i802_bss *bss = priv;
5027         struct ieee80211_mgmt mgmt;
5028
5029         memset(&mgmt, 0, sizeof(mgmt));
5030         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5031                                           WLAN_FC_STYPE_DISASSOC);
5032         memcpy(mgmt.da, addr, ETH_ALEN);
5033         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5034         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5035         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5036         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5037                                             IEEE80211_HDRLEN +
5038                                             sizeof(mgmt.u.disassoc));
5039 }
5040
5041
5042 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5043                              const char *brname, const char *ifname)
5044 {
5045         int ifindex;
5046         char in_br[IFNAMSIZ];
5047
5048         os_strlcpy(drv->brname, brname, IFNAMSIZ);
5049         ifindex = if_nametoindex(brname);
5050         if (ifindex == 0) {
5051                 /*
5052                  * Bridge was configured, but the bridge device does
5053                  * not exist. Try to add it now.
5054                  */
5055                 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
5056                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5057                                    "bridge interface %s: %s",
5058                                    brname, strerror(errno));
5059                         return -1;
5060                 }
5061                 drv->added_bridge = 1;
5062                 add_ifidx(drv, if_nametoindex(brname));
5063         }
5064
5065         if (linux_br_get(in_br, ifname) == 0) {
5066                 if (os_strcmp(in_br, brname) == 0)
5067                         return 0; /* already in the bridge */
5068
5069                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5070                            "bridge %s", ifname, in_br);
5071                 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
5072                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5073                                    "remove interface %s from bridge "
5074                                    "%s: %s",
5075                                    ifname, brname, strerror(errno));
5076                         return -1;
5077                 }
5078         }
5079
5080         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5081                    ifname, brname);
5082         if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
5083                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5084                            "into bridge %s: %s",
5085                            ifname, brname, strerror(errno));
5086                 return -1;
5087         }
5088         drv->added_if_into_bridge = 1;
5089
5090         return 0;
5091 }
5092
5093
5094 static void *i802_init(struct hostapd_data *hapd,
5095                        struct wpa_init_params *params)
5096 {
5097         struct wpa_driver_nl80211_data *drv;
5098         struct i802_bss *bss;
5099         size_t i;
5100         char brname[IFNAMSIZ];
5101         int ifindex, br_ifindex;
5102         int br_added = 0;
5103
5104         bss = wpa_driver_nl80211_init(hapd, params->ifname);
5105         if (bss == NULL)
5106                 return NULL;
5107
5108         drv = bss->drv;
5109         if (linux_br_get(brname, params->ifname) == 0) {
5110                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5111                            params->ifname, brname);
5112                 br_ifindex = if_nametoindex(brname);
5113         } else {
5114                 brname[0] = '\0';
5115                 br_ifindex = 0;
5116         }
5117
5118         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
5119         drv->if_indices = drv->default_if_indices;
5120         for (i = 0; i < params->num_bridge; i++) {
5121                 if (params->bridge[i]) {
5122                         ifindex = if_nametoindex(params->bridge[i]);
5123                         if (ifindex)
5124                                 add_ifidx(drv, ifindex);
5125                         if (ifindex == br_ifindex)
5126                                 br_added = 1;
5127                 }
5128         }
5129         if (!br_added && br_ifindex &&
5130             (params->num_bridge == 0 || !params->bridge[0]))
5131                 add_ifidx(drv, br_ifindex);
5132
5133         /* start listening for EAPOL on the default AP interface */
5134         add_ifidx(drv, drv->ifindex);
5135
5136         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5137                 goto failed;
5138
5139         if (params->bssid) {
5140                 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5141                                        params->bssid))
5142                         goto failed;
5143         }
5144
5145         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5146                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5147                            "into AP mode", bss->ifname);
5148                 goto failed;
5149         }
5150
5151         if (params->num_bridge && params->bridge[0] &&
5152             i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5153                 goto failed;
5154
5155         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5156                 goto failed;
5157
5158         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5159         if (drv->eapol_sock < 0) {
5160                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5161                 goto failed;
5162         }
5163
5164         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5165         {
5166                 printf("Could not register read socket for eapol\n");
5167                 goto failed;
5168         }
5169
5170         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5171                 goto failed;
5172
5173         return bss;
5174
5175 failed:
5176         nl80211_remove_monitor_interface(drv);
5177         if (drv->ioctl_sock >= 0)
5178                 close(drv->ioctl_sock);
5179
5180         genl_family_put(drv->nl80211);
5181         nl_cache_free(drv->nl_cache);
5182         nl80211_handle_destroy(drv->nl_handle);
5183         nl_cb_put(drv->nl_cb);
5184
5185         os_free(drv);
5186         return NULL;
5187 }
5188
5189
5190 static void i802_deinit(void *priv)
5191 {
5192         wpa_driver_nl80211_deinit(priv);
5193 }
5194
5195 #endif /* HOSTAPD */
5196
5197
5198 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5199         enum wpa_driver_if_type type)
5200 {
5201         switch (type) {
5202         case WPA_IF_STATION:
5203         case WPA_IF_P2P_CLIENT:
5204         case WPA_IF_P2P_GROUP:
5205                 return NL80211_IFTYPE_STATION;
5206         case WPA_IF_AP_VLAN:
5207                 return NL80211_IFTYPE_AP_VLAN;
5208         case WPA_IF_AP_BSS:
5209         case WPA_IF_P2P_GO:
5210                 return NL80211_IFTYPE_AP;
5211         }
5212         return -1;
5213 }
5214
5215
5216 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5217                                      const char *ifname, const u8 *addr,
5218                                      void *bss_ctx, void **drv_priv,
5219                                      char *force_ifname, u8 *if_addr)
5220 {
5221         struct i802_bss *bss = priv;
5222         struct wpa_driver_nl80211_data *drv = bss->drv;
5223         int ifidx;
5224 #ifdef HOSTAPD
5225         struct i802_bss *new_bss = NULL;
5226
5227         if (type == WPA_IF_AP_BSS) {
5228                 new_bss = os_zalloc(sizeof(*new_bss));
5229                 if (new_bss == NULL)
5230                         return -1;
5231         }
5232 #endif /* HOSTAPD */
5233
5234         if (addr)
5235                 os_memcpy(if_addr, addr, ETH_ALEN);
5236         ifidx = nl80211_create_iface(drv, ifname,
5237                                      wpa_driver_nl80211_if_type(type), addr,
5238                                      0);
5239         if (ifidx < 0) {
5240 #ifdef HOSTAPD
5241                 os_free(new_bss);
5242 #endif /* HOSTAPD */
5243                 return -1;
5244         }
5245
5246         if (!addr &&
5247             linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5248                 return -1;
5249
5250 #ifdef HOSTAPD
5251         if (type == WPA_IF_AP_BSS) {
5252                 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5253                         nl80211_remove_iface(drv, ifidx);
5254                         os_free(new_bss);
5255                         return -1;
5256                 }
5257                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5258                 new_bss->ifindex = ifidx;
5259                 new_bss->drv = drv;
5260                 new_bss->next = drv->first_bss.next;
5261                 drv->first_bss.next = new_bss;
5262                 if (drv_priv)
5263                         *drv_priv = new_bss;
5264         }
5265 #endif /* HOSTAPD */
5266
5267         return 0;
5268 }
5269
5270
5271 static int wpa_driver_nl80211_if_remove(void *priv,
5272                                         enum wpa_driver_if_type type,
5273                                         const char *ifname)
5274 {
5275         struct i802_bss *bss = priv;
5276         struct wpa_driver_nl80211_data *drv = bss->drv;
5277         int ifindex = if_nametoindex(ifname);
5278
5279         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5280                    __func__, type, ifname, ifindex);
5281         if (ifindex <= 0)
5282                 return -1;
5283         nl80211_remove_iface(drv, ifindex);
5284
5285 #ifdef HOSTAPD
5286         if (type != WPA_IF_AP_BSS)
5287                 return 0;
5288
5289         if (bss != &drv->first_bss) {
5290                 struct i802_bss *tbss = &drv->first_bss;
5291
5292                 while (tbss) {
5293                         if (tbss->next != bss)
5294                                 continue;
5295
5296                         tbss->next = bss->next;
5297                         os_free(bss);
5298                         break;
5299                 }
5300         }
5301 #endif /* HOSTAPD */
5302
5303         return 0;
5304 }
5305
5306
5307 static int cookie_handler(struct nl_msg *msg, void *arg)
5308 {
5309         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5310         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5311         u64 *cookie = arg;
5312         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5313                   genlmsg_attrlen(gnlh, 0), NULL);
5314         if (tb[NL80211_ATTR_COOKIE])
5315                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5316         return NL_SKIP;
5317 }
5318
5319
5320 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5321                                   unsigned int freq, const u8 *buf,
5322                                   size_t buf_len, u64 *cookie_out)
5323 {
5324         struct nl_msg *msg;
5325         u64 cookie;
5326         int ret = -1;
5327
5328         msg = nlmsg_alloc();
5329         if (!msg)
5330                 return -1;
5331
5332         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5333                     NL80211_CMD_FRAME, 0);
5334
5335         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5336         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5337         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5338
5339         cookie = 0;
5340         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5341         msg = NULL;
5342         if (ret) {
5343                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5344                            "(%s)", ret, strerror(-ret));
5345                 goto nla_put_failure;
5346         }
5347         wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5348                    "cookie 0x%llx", (long long unsigned int) cookie);
5349
5350         if (cookie_out)
5351                 *cookie_out = cookie;
5352
5353 nla_put_failure:
5354         nlmsg_free(msg);
5355         return ret;
5356 }
5357
5358
5359 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5360                                           const u8 *dst, const u8 *src,
5361                                           const u8 *bssid,
5362                                           const u8 *data, size_t data_len)
5363 {
5364         struct i802_bss *bss = priv;
5365         struct wpa_driver_nl80211_data *drv = bss->drv;
5366         int ret = -1;
5367         u8 *buf;
5368         struct ieee80211_hdr *hdr;
5369
5370         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5371                    drv->ifindex);
5372
5373         buf = os_zalloc(24 + data_len);
5374         if (buf == NULL)
5375                 return ret;
5376         os_memcpy(buf + 24, data, data_len);
5377         hdr = (struct ieee80211_hdr *) buf;
5378         hdr->frame_control =
5379                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5380         os_memcpy(hdr->addr1, dst, ETH_ALEN);
5381         os_memcpy(hdr->addr2, src, ETH_ALEN);
5382         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5383
5384         if (drv->nlmode == NL80211_IFTYPE_AP)
5385                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5386         else
5387                 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5388                                              &drv->send_action_cookie);
5389
5390         os_free(buf);
5391         return ret;
5392 }
5393
5394
5395 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5396                                                 unsigned int duration)
5397 {
5398         struct i802_bss *bss = priv;
5399         struct wpa_driver_nl80211_data *drv = bss->drv;
5400         struct nl_msg *msg;
5401         int ret;
5402         u64 cookie;
5403
5404         msg = nlmsg_alloc();
5405         if (!msg)
5406                 return -1;
5407
5408         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5409                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5410
5411         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5412         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5413         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5414
5415         cookie = 0;
5416         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5417         if (ret == 0) {
5418                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5419                            "0x%llx for freq=%u MHz duration=%u",
5420                            (long long unsigned int) cookie, freq, duration);
5421                 drv->remain_on_chan_cookie = cookie;
5422                 return 0;
5423         }
5424         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5425                    "(freq=%d duration=%u): %d (%s)",
5426                    freq, duration, ret, strerror(-ret));
5427 nla_put_failure:
5428         return -1;
5429 }
5430
5431
5432 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5433 {
5434         struct i802_bss *bss = priv;
5435         struct wpa_driver_nl80211_data *drv = bss->drv;
5436         struct nl_msg *msg;
5437         int ret;
5438
5439         if (!drv->pending_remain_on_chan) {
5440                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5441                            "to cancel");
5442                 return -1;
5443         }
5444
5445         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5446                    "0x%llx",
5447                    (long long unsigned int) drv->remain_on_chan_cookie);
5448
5449         msg = nlmsg_alloc();
5450         if (!msg)
5451                 return -1;
5452
5453         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5454                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5455
5456         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5457         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5458
5459         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5460         if (ret == 0)
5461                 return 0;
5462         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5463                    "%d (%s)", ret, strerror(-ret));
5464 nla_put_failure:
5465         return -1;
5466 }
5467
5468
5469 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5470 {
5471         struct i802_bss *bss = priv;
5472         struct wpa_driver_nl80211_data *drv = bss->drv;
5473
5474         if (drv->nlmode != NL80211_IFTYPE_STATION) {
5475                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5476                            "allowed in station mode (iftype=%d)",
5477                            drv->nlmode);
5478                 return -1;
5479         }
5480
5481         if (!report) {
5482                 if (drv->nl_handle_preq) {
5483                         eloop_unregister_read_sock(
5484                                 nl_socket_get_fd(drv->nl_handle_preq));
5485                         nl_cache_free(drv->nl_cache_preq);
5486                         nl80211_handle_destroy(drv->nl_handle_preq);
5487                         drv->nl_handle_preq = NULL;
5488                 }
5489                 return 0;
5490         }
5491
5492         if (drv->nl_handle_preq) {
5493                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
5494                            "already on!");
5495                 return 0;
5496         }
5497
5498         drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb);
5499         if (drv->nl_handle_preq == NULL) {
5500                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate "
5501                            "netlink callbacks (preq)");
5502                 goto out_err1;
5503         }
5504
5505         if (genl_connect(drv->nl_handle_preq)) {
5506                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to "
5507                            "generic netlink (preq)");
5508                 goto out_err2;
5509                 return -1;
5510         }
5511
5512 #ifdef CONFIG_LIBNL20
5513         if (genl_ctrl_alloc_cache(drv->nl_handle_preq,
5514                                   &drv->nl_cache_preq) < 0) {
5515                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5516                            "netlink cache (preq)");
5517                 goto out_err2;
5518         }
5519 #else /* CONFIG_LIBNL20 */
5520         drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq);
5521         if (drv->nl_cache_preq == NULL) {
5522                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5523                            "netlink cache (preq)");
5524                 goto out_err2;
5525         }
5526 #endif /* CONFIG_LIBNL20 */
5527
5528         if (nl80211_register_frame(drv, drv->nl_handle_preq,
5529                                    (WLAN_FC_TYPE_MGMT << 2) |
5530                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
5531                                    NULL, 0) < 0) {
5532                 goto out_err3;
5533         }
5534
5535         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq),
5536                                  wpa_driver_nl80211_event_receive, drv,
5537                                  drv->nl_handle_preq);
5538
5539         return 0;
5540
5541  out_err3:
5542         nl_cache_free(drv->nl_cache_preq);
5543  out_err2:
5544         nl80211_handle_destroy(drv->nl_handle_preq);
5545         drv->nl_handle_preq = NULL;
5546  out_err1:
5547         return -1;
5548 }
5549
5550
5551 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5552                                      int ifindex, int disabled)
5553 {
5554         struct nl_msg *msg;
5555         struct nlattr *bands, *band;
5556         int ret;
5557
5558         msg = nlmsg_alloc();
5559         if (!msg)
5560                 return -1;
5561
5562         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5563                     NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5564         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5565
5566         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5567         if (!bands)
5568                 goto nla_put_failure;
5569
5570         /*
5571          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5572          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5573          * rates. All 5 GHz rates are left enabled.
5574          */
5575         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5576         if (!band)
5577                 goto nla_put_failure;
5578         NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5579                 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5580         nla_nest_end(msg, band);
5581
5582         nla_nest_end(msg, bands);
5583
5584         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5585         msg = NULL;
5586         if (ret) {
5587                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5588                            "(%s)", ret, strerror(-ret));
5589         }
5590
5591         return ret;
5592
5593 nla_put_failure:
5594         nlmsg_free(msg);
5595         return -1;
5596 }
5597
5598
5599 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5600 {
5601         struct i802_bss *bss = priv;
5602         struct wpa_driver_nl80211_data *drv = bss->drv;
5603         drv->disable_11b_rates = disabled;
5604         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5605 }
5606
5607
5608 static int wpa_driver_nl80211_deinit_ap(void *priv)
5609 {
5610         struct i802_bss *bss = priv;
5611         struct wpa_driver_nl80211_data *drv = bss->drv;
5612         if (drv->nlmode != NL80211_IFTYPE_AP)
5613                 return -1;
5614         wpa_driver_nl80211_del_beacon(drv);
5615         return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5616 }
5617
5618
5619 static void wpa_driver_nl80211_resume(void *priv)
5620 {
5621         struct i802_bss *bss = priv;
5622         struct wpa_driver_nl80211_data *drv = bss->drv;
5623         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5624                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5625                            "resume event");
5626         }
5627 }
5628
5629
5630 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5631                                   const u8 *ies, size_t ies_len)
5632 {
5633         struct i802_bss *bss = priv;
5634         struct wpa_driver_nl80211_data *drv = bss->drv;
5635         int ret;
5636         u8 *data, *pos;
5637         size_t data_len;
5638         u8 own_addr[ETH_ALEN];
5639
5640         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5641                 return -1;
5642
5643         if (action != 1) {
5644                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5645                            "action %d", action);
5646                 return -1;
5647         }
5648
5649         /*
5650          * Action frame payload:
5651          * Category[1] = 6 (Fast BSS Transition)
5652          * Action[1] = 1 (Fast BSS Transition Request)
5653          * STA Address
5654          * Target AP Address
5655          * FT IEs
5656          */
5657
5658         data_len = 2 + 2 * ETH_ALEN + ies_len;
5659         data = os_malloc(data_len);
5660         if (data == NULL)
5661                 return -1;
5662         pos = data;
5663         *pos++ = 0x06; /* FT Action category */
5664         *pos++ = action;
5665         os_memcpy(pos, own_addr, ETH_ALEN);
5666         pos += ETH_ALEN;
5667         os_memcpy(pos, target_ap, ETH_ALEN);
5668         pos += ETH_ALEN;
5669         os_memcpy(pos, ies, ies_len);
5670
5671         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5672                                              own_addr, drv->bssid,
5673                                              data, data_len);
5674         os_free(data);
5675
5676         return ret;
5677 }
5678
5679
5680 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5681 {
5682         struct i802_bss *bss = priv;
5683         struct wpa_driver_nl80211_data *drv = bss->drv;
5684         struct nl_msg *msg, *cqm = NULL;
5685
5686         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5687                    "hysteresis=%d", threshold, hysteresis);
5688
5689         msg = nlmsg_alloc();
5690         if (!msg)
5691                 return -1;
5692
5693         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5694                     0, NL80211_CMD_SET_CQM, 0);
5695
5696         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5697
5698         cqm = nlmsg_alloc();
5699         if (cqm == NULL)
5700                 return -1;
5701
5702         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5703         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5704         nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5705
5706         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5707                 return 0;
5708         msg = NULL;
5709
5710 nla_put_failure:
5711         if (cqm)
5712                 nlmsg_free(cqm);
5713         nlmsg_free(msg);
5714         return -1;
5715 }
5716
5717
5718 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5719                               int encrypt)
5720 {
5721         struct i802_bss *bss = priv;
5722         struct wpa_driver_nl80211_data *drv = bss->drv;
5723         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5724 }
5725
5726
5727 static int nl80211_set_intra_bss(void *priv, int enabled)
5728 {
5729         struct i802_bss *bss = priv;
5730         struct wpa_driver_nl80211_data *drv = bss->drv;
5731         struct nl_msg *msg;
5732
5733         msg = nlmsg_alloc();
5734         if (!msg)
5735                 return -ENOMEM;
5736
5737         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5738                     NL80211_CMD_SET_BSS, 0);
5739
5740         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5741         NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5742
5743         return send_and_recv_msgs(drv, msg, NULL, NULL);
5744  nla_put_failure:
5745         return -ENOBUFS;
5746 }
5747
5748
5749 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5750         .name = "nl80211",
5751         .desc = "Linux nl80211/cfg80211",
5752         .get_bssid = wpa_driver_nl80211_get_bssid,
5753         .get_ssid = wpa_driver_nl80211_get_ssid,
5754         .set_key = wpa_driver_nl80211_set_key,
5755         .scan2 = wpa_driver_nl80211_scan,
5756         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5757         .deauthenticate = wpa_driver_nl80211_deauthenticate,
5758         .disassociate = wpa_driver_nl80211_disassociate,
5759         .authenticate = wpa_driver_nl80211_authenticate,
5760         .associate = wpa_driver_nl80211_associate,
5761         .init = wpa_driver_nl80211_init,
5762         .deinit = wpa_driver_nl80211_deinit,
5763         .get_capa = wpa_driver_nl80211_get_capa,
5764         .set_operstate = wpa_driver_nl80211_set_operstate,
5765         .set_supp_port = wpa_driver_nl80211_set_supp_port,
5766         .set_country = wpa_driver_nl80211_set_country,
5767         .set_beacon = wpa_driver_nl80211_set_beacon,
5768         .if_add = wpa_driver_nl80211_if_add,
5769         .if_remove = wpa_driver_nl80211_if_remove,
5770         .send_mlme = wpa_driver_nl80211_send_mlme,
5771         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5772         .sta_add = wpa_driver_nl80211_sta_add,
5773         .sta_remove = wpa_driver_nl80211_sta_remove,
5774         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5775         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5776 #ifdef HOSTAPD
5777         .hapd_init = i802_init,
5778         .hapd_deinit = i802_deinit,
5779         .get_seqnum = i802_get_seqnum,
5780         .flush = i802_flush,
5781         .read_sta_data = i802_read_sta_data,
5782         .sta_deauth = i802_sta_deauth,
5783         .sta_disassoc = i802_sta_disassoc,
5784         .get_inact_sec = i802_get_inact_sec,
5785         .sta_clear_stats = i802_sta_clear_stats,
5786         .set_rts = i802_set_rts,
5787         .set_frag = i802_set_frag,
5788         .set_rate_sets = i802_set_rate_sets,
5789         .set_cts_protect = i802_set_cts_protect,
5790         .set_preamble = i802_set_preamble,
5791         .set_short_slot_time = i802_set_short_slot_time,
5792         .set_tx_queue_params = i802_set_tx_queue_params,
5793         .set_sta_vlan = i802_set_sta_vlan,
5794         .set_wds_sta = i802_set_wds_sta,
5795 #endif /* HOSTAPD */
5796         .set_freq = i802_set_freq,
5797         .send_action = wpa_driver_nl80211_send_action,
5798         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5799         .cancel_remain_on_channel =
5800         wpa_driver_nl80211_cancel_remain_on_channel,
5801         .probe_req_report = wpa_driver_nl80211_probe_req_report,
5802         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5803         .deinit_ap = wpa_driver_nl80211_deinit_ap,
5804         .resume = wpa_driver_nl80211_resume,
5805         .send_ft_action = nl80211_send_ft_action,
5806         .signal_monitor = nl80211_signal_monitor,
5807         .send_frame = nl80211_send_frame,
5808         .set_intra_bss = nl80211_set_intra_bss,
5809 };