www.project-moonshot.org Git - mech_eap.orig/blob - 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         case NL80211_CMD_REG_CHANGE:
1309                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
1310                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1311                                      NULL);
1312                 break;
1313         case NL80211_CMD_REG_BEACON_HINT:
1314                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
1315                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1316                                      NULL);
1317                 break;
1318         default:
1319                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1320                            "(cmd=%d)", gnlh->cmd);
1321                 break;
1322         }
1323
1324         return NL_SKIP;
1325 }
1326
1327
1328 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1329                                              void *handle)
1330 {
1331         struct nl_cb *cb;
1332         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1333
1334         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1335
1336         cb = nl_cb_clone(drv->nl_cb);
1337         if (!cb)
1338                 return;
1339         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1340         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1341         nl_recvmsgs(handle, cb);
1342         nl_cb_put(cb);
1343 }
1344
1345
1346 /**
1347  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1348  * @priv: driver_nl80211 private data
1349  * @alpha2_arg: country to which to switch to
1350  * Returns: 0 on success, -1 on failure
1351  *
1352  * This asks nl80211 to set the regulatory domain for given
1353  * country ISO / IEC alpha2.
1354  */
1355 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1356 {
1357         struct i802_bss *bss = priv;
1358         struct wpa_driver_nl80211_data *drv = bss->drv;
1359         char alpha2[3];
1360         struct nl_msg *msg;
1361
1362         msg = nlmsg_alloc();
1363         if (!msg)
1364                 return -ENOMEM;
1365
1366         alpha2[0] = alpha2_arg[0];
1367         alpha2[1] = alpha2_arg[1];
1368         alpha2[2] = '\0';
1369
1370         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1371                     0, NL80211_CMD_REQ_SET_REG, 0);
1372
1373         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1374         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1375                 return -EINVAL;
1376         return 0;
1377 nla_put_failure:
1378         return -EINVAL;
1379 }
1380
1381
1382 #ifndef HOSTAPD
1383 struct wiphy_info_data {
1384         int max_scan_ssids;
1385         int ap_supported;
1386         int auth_supported;
1387         int connect_supported;
1388 };
1389
1390
1391 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1392 {
1393         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1394         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1395         struct wiphy_info_data *info = arg;
1396
1397         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1398                   genlmsg_attrlen(gnlh, 0), NULL);
1399
1400         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1401                 info->max_scan_ssids =
1402                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1403
1404         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1405                 struct nlattr *nl_mode;
1406                 int i;
1407                 nla_for_each_nested(nl_mode,
1408                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1409                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1410                                 info->ap_supported = 1;
1411                                 break;
1412                         }
1413                 }
1414         }
1415
1416         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1417                 struct nlattr *nl_cmd;
1418                 int i;
1419
1420                 nla_for_each_nested(nl_cmd,
1421                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1422                         u32 cmd = nla_get_u32(nl_cmd);
1423                         if (cmd == NL80211_CMD_AUTHENTICATE)
1424                                 info->auth_supported = 1;
1425                         else if (cmd == NL80211_CMD_CONNECT)
1426                                 info->connect_supported = 1;
1427                 }
1428         }
1429
1430         return NL_SKIP;
1431 }
1432
1433
1434 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1435                                        struct wiphy_info_data *info)
1436 {
1437         struct nl_msg *msg;
1438
1439         os_memset(info, 0, sizeof(*info));
1440         msg = nlmsg_alloc();
1441         if (!msg)
1442                 return -1;
1443
1444         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1445                     0, NL80211_CMD_GET_WIPHY, 0);
1446
1447         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1448
1449         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1450                 return 0;
1451         msg = NULL;
1452 nla_put_failure:
1453         nlmsg_free(msg);
1454         return -1;
1455 }
1456
1457
1458 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1459 {
1460         struct wiphy_info_data info;
1461         if (wpa_driver_nl80211_get_info(drv, &info))
1462                 return -1;
1463         drv->has_capability = 1;
1464         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1465         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1466                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1467                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1468                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1469         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1470                 WPA_DRIVER_CAPA_ENC_WEP104 |
1471                 WPA_DRIVER_CAPA_ENC_TKIP |
1472                 WPA_DRIVER_CAPA_ENC_CCMP;
1473         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1474                 WPA_DRIVER_AUTH_SHARED |
1475                 WPA_DRIVER_AUTH_LEAP;
1476
1477         drv->capa.max_scan_ssids = info.max_scan_ssids;
1478         if (info.ap_supported)
1479                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1480
1481         if (info.auth_supported)
1482                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1483         else if (!info.connect_supported) {
1484                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1485                            "authentication/association or connect commands");
1486                 return -1;
1487         }
1488
1489         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1490         drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1491         drv->capa.max_remain_on_chan = 5000;
1492
1493         return 0;
1494 }
1495 #endif /* HOSTAPD */
1496
1497
1498 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1499 {
1500         int ret;
1501
1502         /* Initialize generic netlink and nl80211 */
1503
1504         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1505         if (drv->nl_cb == NULL) {
1506                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1507                            "callbacks");
1508                 goto err1;
1509         }
1510
1511         drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1512         if (drv->nl_handle == NULL) {
1513                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1514                            "callbacks");
1515                 goto err2;
1516         }
1517
1518         drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1519         if (drv->nl_handle_event == NULL) {
1520                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1521                            "callbacks (event)");
1522                 goto err2b;
1523         }
1524
1525         if (genl_connect(drv->nl_handle)) {
1526                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1527                            "netlink");
1528                 goto err3;
1529         }
1530
1531         if (genl_connect(drv->nl_handle_event)) {
1532                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1533                            "netlink (event)");
1534                 goto err3;
1535         }
1536
1537 #ifdef CONFIG_LIBNL20
1538         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1539                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1540                            "netlink cache");
1541                 goto err3;
1542         }
1543         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1544             0) {
1545                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1546                            "netlink cache (event)");
1547                 goto err3b;
1548         }
1549 #else /* CONFIG_LIBNL20 */
1550         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1551         if (drv->nl_cache == NULL) {
1552                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1553                            "netlink cache");
1554                 goto err3;
1555         }
1556         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1557         if (drv->nl_cache_event == NULL) {
1558                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1559                            "netlink cache (event)");
1560                 goto err3b;
1561         }
1562 #endif /* CONFIG_LIBNL20 */
1563
1564         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1565         if (drv->nl80211 == NULL) {
1566                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1567                            "found");
1568                 goto err4;
1569         }
1570
1571         ret = nl_get_multicast_id(drv, "nl80211", "scan");
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 scan events: %d (%s)",
1577                            ret, strerror(-ret));
1578                 goto err4;
1579         }
1580
1581         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1582         if (ret >= 0)
1583                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1584         if (ret < 0) {
1585                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1586                            "membership for mlme events: %d (%s)",
1587                            ret, strerror(-ret));
1588                 goto err4;
1589         }
1590
1591         ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
1592         if (ret >= 0)
1593                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1594         if (ret < 0) {
1595                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1596                            "membership for regulatory events: %d (%s)",
1597                            ret, strerror(-ret));
1598                 /* Continue without regulatory events */
1599         }
1600
1601         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1602                                  wpa_driver_nl80211_event_receive, drv,
1603                                  drv->nl_handle_event);
1604
1605         return 0;
1606
1607 err4:
1608         nl_cache_free(drv->nl_cache_event);
1609 err3b:
1610         nl_cache_free(drv->nl_cache);
1611 err3:
1612         nl80211_handle_destroy(drv->nl_handle_event);
1613 err2b:
1614         nl80211_handle_destroy(drv->nl_handle);
1615 err2:
1616         nl_cb_put(drv->nl_cb);
1617 err1:
1618         return -1;
1619 }
1620
1621
1622 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1623 {
1624         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1625         /*
1626          * This may be for any interface; use ifdown event to disable
1627          * interface.
1628          */
1629 }
1630
1631
1632 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1633 {
1634         struct wpa_driver_nl80211_data *drv = ctx;
1635         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1636         if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1637                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1638                            "after rfkill unblock");
1639                 return;
1640         }
1641         /* rtnetlink ifup handler will report interface as enabled */
1642 }
1643
1644
1645 /**
1646  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1647  * @ctx: context to be used when calling wpa_supplicant functions,
1648  * e.g., wpa_supplicant_event()
1649  * @ifname: interface name, e.g., wlan0
1650  * Returns: Pointer to private data, %NULL on failure
1651  */
1652 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1653 {
1654         struct wpa_driver_nl80211_data *drv;
1655         struct netlink_config *cfg;
1656         struct rfkill_config *rcfg;
1657         struct i802_bss *bss;
1658
1659         drv = os_zalloc(sizeof(*drv));
1660         if (drv == NULL)
1661                 return NULL;
1662         drv->ctx = ctx;
1663         bss = &drv->first_bss;
1664         bss->drv = drv;
1665         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1666         drv->monitor_ifidx = -1;
1667         drv->monitor_sock = -1;
1668         drv->ioctl_sock = -1;
1669
1670         if (wpa_driver_nl80211_init_nl(drv)) {
1671                 os_free(drv);
1672                 return NULL;
1673         }
1674
1675         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1676         if (drv->ioctl_sock < 0) {
1677                 perror("socket(PF_INET,SOCK_DGRAM)");
1678                 goto failed;
1679         }
1680
1681         cfg = os_zalloc(sizeof(*cfg));
1682         if (cfg == NULL)
1683                 goto failed;
1684         cfg->ctx = drv;
1685         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1686         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1687         drv->netlink = netlink_init(cfg);
1688         if (drv->netlink == NULL) {
1689                 os_free(cfg);
1690                 goto failed;
1691         }
1692
1693         rcfg = os_zalloc(sizeof(*rcfg));
1694         if (rcfg == NULL)
1695                 goto failed;
1696         rcfg->ctx = drv;
1697         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1698         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1699         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1700         drv->rfkill = rfkill_init(rcfg);
1701         if (drv->rfkill == NULL) {
1702                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1703                 os_free(rcfg);
1704         }
1705
1706         if (wpa_driver_nl80211_finish_drv_init(drv))
1707                 goto failed;
1708
1709         return bss;
1710
1711 failed:
1712         rfkill_deinit(drv->rfkill);
1713         netlink_deinit(drv->netlink);
1714         if (drv->ioctl_sock >= 0)
1715                 close(drv->ioctl_sock);
1716
1717         genl_family_put(drv->nl80211);
1718         nl_cache_free(drv->nl_cache);
1719         nl80211_handle_destroy(drv->nl_handle);
1720         nl_cb_put(drv->nl_cb);
1721         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1722
1723         os_free(drv);
1724         return NULL;
1725 }
1726
1727
1728 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1729                                   struct nl_handle *nl_handle,
1730                                   u16 type, const u8 *match, size_t match_len)
1731 {
1732         struct nl_msg *msg;
1733         int ret = -1;
1734
1735         msg = nlmsg_alloc();
1736         if (!msg)
1737                 return -1;
1738
1739         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1740                     NL80211_CMD_REGISTER_ACTION, 0);
1741
1742         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1743         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1744         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1745
1746         ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
1747         msg = NULL;
1748         if (ret) {
1749                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1750                            "failed (type=%u): ret=%d (%s)",
1751                            type, ret, strerror(-ret));
1752                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1753                             match, match_len);
1754                 goto nla_put_failure;
1755         }
1756         ret = 0;
1757 nla_put_failure:
1758         nlmsg_free(msg);
1759         return ret;
1760 }
1761
1762
1763 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1764                                          const u8 *match, size_t match_len)
1765 {
1766         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1767         return nl80211_register_frame(drv, drv->nl_handle_event,
1768                                       type, match, match_len);
1769 }
1770
1771
1772 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1773 {
1774 #ifdef CONFIG_P2P
1775         /* GAS Initial Request */
1776         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1777                 return -1;
1778         /* GAS Initial Response */
1779         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1780                 return -1;
1781         /* GAS Comeback Request */
1782         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1783                 return -1;
1784         /* GAS Comeback Response */
1785         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1786                 return -1;
1787         /* P2P Public Action */
1788         if (nl80211_register_action_frame(drv,
1789                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1790                                           6) < 0)
1791                 return -1;
1792         /* P2P Action */
1793         if (nl80211_register_action_frame(drv,
1794                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1795                                           5) < 0)
1796                 return -1;
1797 #endif /* CONFIG_P2P */
1798
1799         /* FT Action frames */
1800         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1801                 return -1;
1802         else
1803                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1804                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1805
1806         return 0;
1807 }
1808
1809
1810 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1811 {
1812         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1813 }
1814
1815
1816 static int
1817 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1818 {
1819         struct i802_bss *bss = &drv->first_bss;
1820         int send_rfkill_event = 0;
1821
1822         drv->ifindex = if_nametoindex(bss->ifname);
1823         drv->first_bss.ifindex = drv->ifindex;
1824
1825 #ifndef HOSTAPD
1826         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1827                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1828                            "use managed mode");
1829         }
1830
1831         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1832                 if (rfkill_is_blocked(drv->rfkill)) {
1833                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1834                                    "interface '%s' due to rfkill",
1835                                    bss->ifname);
1836                         drv->if_disabled = 1;
1837                         send_rfkill_event = 1;
1838                 } else {
1839                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
1840                                    "interface '%s' UP", bss->ifname);
1841                         return -1;
1842                 }
1843         }
1844
1845         if (wpa_driver_nl80211_capa(drv))
1846                 return -1;
1847
1848         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1849                                1, IF_OPER_DORMANT);
1850 #endif /* HOSTAPD */
1851
1852         if (nl80211_register_action_frames(drv) < 0) {
1853                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1854                            "frame processing - ignore for now");
1855                 /*
1856                  * Older kernel versions did not support this, so ignore the
1857                  * error for now. Some functionality may not be available
1858                  * because of this.
1859                  */
1860         }
1861
1862         if (send_rfkill_event) {
1863                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1864                                        drv, drv->ctx);
1865         }
1866
1867         return 0;
1868 }
1869
1870
1871 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1872 {
1873         struct nl_msg *msg;
1874
1875         msg = nlmsg_alloc();
1876         if (!msg)
1877                 return -ENOMEM;
1878
1879         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1880                     0, NL80211_CMD_DEL_BEACON, 0);
1881         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1882
1883         return send_and_recv_msgs(drv, msg, NULL, NULL);
1884  nla_put_failure:
1885         return -ENOBUFS;
1886 }
1887
1888
1889 /**
1890  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1891  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1892  *
1893  * Shut down driver interface and processing of driver events. Free
1894  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1895  */
1896 static void wpa_driver_nl80211_deinit(void *priv)
1897 {
1898         struct i802_bss *bss = priv;
1899         struct wpa_driver_nl80211_data *drv = bss->drv;
1900
1901         if (drv->nl_handle_preq)
1902                 wpa_driver_nl80211_probe_req_report(bss, 0);
1903         if (drv->added_if_into_bridge) {
1904                 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1905                     < 0)
1906                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1907                                    "interface %s from bridge %s: %s",
1908                                    bss->ifname, drv->brname, strerror(errno));
1909         }
1910         if (drv->added_bridge) {
1911                 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1912                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1913                                    "bridge %s: %s",
1914                                    drv->brname, strerror(errno));
1915         }
1916
1917         nl80211_remove_monitor_interface(drv);
1918
1919         if (drv->nlmode == NL80211_IFTYPE_AP)
1920                 wpa_driver_nl80211_del_beacon(drv);
1921
1922 #ifdef HOSTAPD
1923         if (drv->last_freq_ht) {
1924                 /* Clear HT flags from the driver */
1925                 struct hostapd_freq_params freq;
1926                 os_memset(&freq, 0, sizeof(freq));
1927                 freq.freq = drv->last_freq;
1928                 i802_set_freq(priv, &freq);
1929         }
1930
1931         if (drv->eapol_sock >= 0) {
1932                 eloop_unregister_read_sock(drv->eapol_sock);
1933                 close(drv->eapol_sock);
1934         }
1935
1936         if (drv->if_indices != drv->default_if_indices)
1937                 os_free(drv->if_indices);
1938 #endif /* HOSTAPD */
1939
1940         if (drv->disable_11b_rates)
1941                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1942
1943         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1944         netlink_deinit(drv->netlink);
1945         rfkill_deinit(drv->rfkill);
1946
1947         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1948
1949         (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1950         wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1951
1952         if (drv->ioctl_sock >= 0)
1953                 close(drv->ioctl_sock);
1954
1955         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1956         genl_family_put(drv->nl80211);
1957         nl_cache_free(drv->nl_cache);
1958         nl_cache_free(drv->nl_cache_event);
1959         nl80211_handle_destroy(drv->nl_handle);
1960         nl80211_handle_destroy(drv->nl_handle_event);
1961         nl_cb_put(drv->nl_cb);
1962
1963         os_free(drv->filter_ssids);
1964
1965         os_free(drv);
1966 }
1967
1968
1969 /**
1970  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1971  * @eloop_ctx: Driver private data
1972  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1973  *
1974  * This function can be used as registered timeout when starting a scan to
1975  * generate a scan completed event if the driver does not report this.
1976  */
1977 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1978 {
1979         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1980         if (drv->ap_scan_as_station) {
1981                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1982                                             IEEE80211_MODE_AP);
1983                 drv->ap_scan_as_station = 0;
1984         }
1985         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1986         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1987 }
1988
1989
1990 /**
1991  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1992  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1993  * @params: Scan parameters
1994  * Returns: 0 on success, -1 on failure
1995  */
1996 static int wpa_driver_nl80211_scan(void *priv,
1997                                    struct wpa_driver_scan_params *params)
1998 {
1999         struct i802_bss *bss = priv;
2000         struct wpa_driver_nl80211_data *drv = bss->drv;
2001         int ret = 0, timeout;
2002         struct nl_msg *msg, *ssids, *freqs;
2003         size_t i;
2004
2005         msg = nlmsg_alloc();
2006         ssids = nlmsg_alloc();
2007         freqs = nlmsg_alloc();
2008         if (!msg || !ssids || !freqs) {
2009                 nlmsg_free(msg);
2010                 nlmsg_free(ssids);
2011                 nlmsg_free(freqs);
2012                 return -1;
2013         }
2014
2015         os_free(drv->filter_ssids);
2016         drv->filter_ssids = params->filter_ssids;
2017         params->filter_ssids = NULL;
2018         drv->num_filter_ssids = params->num_filter_ssids;
2019
2020         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2021                     NL80211_CMD_TRIGGER_SCAN, 0);
2022
2023         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2024
2025         for (i = 0; i < params->num_ssids; i++) {
2026                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2027                                   params->ssids[i].ssid,
2028                                   params->ssids[i].ssid_len);
2029                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2030                         params->ssids[i].ssid);
2031         }
2032         if (params->num_ssids)
2033                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2034
2035         if (params->extra_ies) {
2036                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2037                                   params->extra_ies, params->extra_ies_len);
2038                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2039                         params->extra_ies);
2040         }
2041
2042         if (params->freqs) {
2043                 for (i = 0; params->freqs[i]; i++) {
2044                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2045                                    "MHz", params->freqs[i]);
2046                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2047                 }
2048                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2049         }
2050
2051         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2052         msg = NULL;
2053         if (ret) {
2054                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2055                            "(%s)", ret, strerror(-ret));
2056 #ifdef HOSTAPD
2057                 if (drv->nlmode == NL80211_IFTYPE_AP) {
2058                         /*
2059                          * mac80211 does not allow scan requests in AP mode, so
2060                          * try to do this in station mode.
2061                          */
2062                         if (wpa_driver_nl80211_set_mode(bss,
2063                                                         IEEE80211_MODE_INFRA))
2064                                 goto nla_put_failure;
2065
2066                         if (wpa_driver_nl80211_scan(drv, params)) {
2067                                 wpa_driver_nl80211_set_mode(bss,
2068                                                             IEEE80211_MODE_AP);
2069                                 goto nla_put_failure;
2070                         }
2071
2072                         /* Restore AP mode when processing scan results */
2073                         drv->ap_scan_as_station = 1;
2074                         ret = 0;
2075                 } else
2076                         goto nla_put_failure;
2077 #else /* HOSTAPD */
2078                 goto nla_put_failure;
2079 #endif /* HOSTAPD */
2080         }
2081
2082         /* Not all drivers generate "scan completed" wireless event, so try to
2083          * read results after a timeout. */
2084         timeout = 10;
2085         if (drv->scan_complete_events) {
2086                 /*
2087                  * The driver seems to deliver events to notify when scan is
2088                  * complete, so use longer timeout to avoid race conditions
2089                  * with scanning and following association request.
2090                  */
2091                 timeout = 30;
2092         }
2093         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2094                    "seconds", ret, timeout);
2095         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2096         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2097                                drv, drv->ctx);
2098
2099 nla_put_failure:
2100         nlmsg_free(ssids);
2101         nlmsg_free(msg);
2102         nlmsg_free(freqs);
2103         return ret;
2104 }
2105
2106
2107 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2108 {
2109         const u8 *end, *pos;
2110
2111         if (ies == NULL)
2112                 return NULL;
2113
2114         pos = ies;
2115         end = ies + ies_len;
2116
2117         while (pos + 1 < end) {
2118                 if (pos + 2 + pos[1] > end)
2119                         break;
2120                 if (pos[0] == ie)
2121                         return pos;
2122                 pos += 2 + pos[1];
2123         }
2124
2125         return NULL;
2126 }
2127
2128
2129 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2130                                  const u8 *ie, size_t ie_len)
2131 {
2132         const u8 *ssid;
2133         size_t i;
2134
2135         if (drv->filter_ssids == NULL)
2136                 return 0;
2137
2138         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2139         if (ssid == NULL)
2140                 return 1;
2141
2142         for (i = 0; i < drv->num_filter_ssids; i++) {
2143                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2144                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2145                     0)
2146                         return 0;
2147         }
2148
2149         return 1;
2150 }
2151
2152
2153 struct nl80211_bss_info_arg {
2154         struct wpa_driver_nl80211_data *drv;
2155         struct wpa_scan_results *res;
2156 };
2157
2158 static int bss_info_handler(struct nl_msg *msg, void *arg)
2159 {
2160         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2161         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2162         struct nlattr *bss[NL80211_BSS_MAX + 1];
2163         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2164                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2165                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2166                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2167                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2168                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2169                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2170                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2171                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2172                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2173                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2174                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2175         };
2176         struct nl80211_bss_info_arg *_arg = arg;
2177         struct wpa_scan_results *res = _arg->res;
2178         struct wpa_scan_res **tmp;
2179         struct wpa_scan_res *r;
2180         const u8 *ie, *beacon_ie;
2181         size_t ie_len, beacon_ie_len;
2182         u8 *pos;
2183
2184         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2185                   genlmsg_attrlen(gnlh, 0), NULL);
2186         if (!tb[NL80211_ATTR_BSS])
2187                 return NL_SKIP;
2188         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2189                              bss_policy))
2190                 return NL_SKIP;
2191         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2192                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2193                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2194         } else {
2195                 ie = NULL;
2196                 ie_len = 0;
2197         }
2198         if (bss[NL80211_BSS_BEACON_IES]) {
2199                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2200                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2201         } else {
2202                 beacon_ie = NULL;
2203                 beacon_ie_len = 0;
2204         }
2205
2206         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2207                                   ie ? ie_len : beacon_ie_len))
2208                 return NL_SKIP;
2209
2210         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2211         if (r == NULL)
2212                 return NL_SKIP;
2213         if (bss[NL80211_BSS_BSSID])
2214                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2215                           ETH_ALEN);
2216         if (bss[NL80211_BSS_FREQUENCY])
2217                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2218         if (bss[NL80211_BSS_BEACON_INTERVAL])
2219                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2220         if (bss[NL80211_BSS_CAPABILITY])
2221                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2222         r->flags |= WPA_SCAN_NOISE_INVALID;
2223         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2224                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2225                 r->level /= 100; /* mBm to dBm */
2226                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2227         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2228                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2229                 r->flags |= WPA_SCAN_LEVEL_INVALID;
2230         } else
2231                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2232         if (bss[NL80211_BSS_TSF])
2233                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2234         if (bss[NL80211_BSS_SEEN_MS_AGO])
2235                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2236         r->ie_len = ie_len;
2237         pos = (u8 *) (r + 1);
2238         if (ie) {
2239                 os_memcpy(pos, ie, ie_len);
2240                 pos += ie_len;
2241         }
2242         r->beacon_ie_len = beacon_ie_len;
2243         if (beacon_ie)
2244                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2245
2246         if (bss[NL80211_BSS_STATUS]) {
2247                 enum nl80211_bss_status status;
2248                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2249                 switch (status) {
2250                 case NL80211_BSS_STATUS_AUTHENTICATED:
2251                         r->flags |= WPA_SCAN_AUTHENTICATED;
2252                         break;
2253                 case NL80211_BSS_STATUS_ASSOCIATED:
2254                         r->flags |= WPA_SCAN_ASSOCIATED;
2255                         break;
2256                 default:
2257                         break;
2258                 }
2259         }
2260
2261         tmp = os_realloc(res->res,
2262                          (res->num + 1) * sizeof(struct wpa_scan_res *));
2263         if (tmp == NULL) {
2264                 os_free(r);
2265                 return NL_SKIP;
2266         }
2267         tmp[res->num++] = r;
2268         res->res = tmp;
2269
2270         return NL_SKIP;
2271 }
2272
2273
2274 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2275                                  const u8 *addr)
2276 {
2277         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2278                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2279                            "mismatch (" MACSTR ")", MAC2STR(addr));
2280                 wpa_driver_nl80211_mlme(drv, addr,
2281                                         NL80211_CMD_DEAUTHENTICATE,
2282                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2283         }
2284 }
2285
2286
2287 static void wpa_driver_nl80211_check_bss_status(
2288         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2289 {
2290         size_t i;
2291
2292         for (i = 0; i < res->num; i++) {
2293                 struct wpa_scan_res *r = res->res[i];
2294                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2295                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2296                                    "indicates BSS status with " MACSTR
2297                                    " as authenticated",
2298                                    MAC2STR(r->bssid));
2299                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
2300                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2301                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2302                             0) {
2303                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2304                                            " in local state (auth=" MACSTR
2305                                            " assoc=" MACSTR ")",
2306                                            MAC2STR(drv->auth_bssid),
2307                                            MAC2STR(drv->bssid));
2308                                 clear_state_mismatch(drv, r->bssid);
2309                         }
2310                 }
2311
2312                 if (r->flags & WPA_SCAN_ASSOCIATED) {
2313                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2314                                    "indicate BSS status with " MACSTR
2315                                    " as associated",
2316                                    MAC2STR(r->bssid));
2317                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
2318                             !drv->associated) {
2319                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2320                                            "(not associated) does not match "
2321                                            "with BSS state");
2322                                 clear_state_mismatch(drv, r->bssid);
2323                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2324                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2325                                    0) {
2326                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2327                                            "(associated with " MACSTR ") does "
2328                                            "not match with BSS state",
2329                                            MAC2STR(drv->bssid));
2330                                 clear_state_mismatch(drv, r->bssid);
2331                                 clear_state_mismatch(drv, drv->bssid);
2332                         }
2333                 }
2334         }
2335 }
2336
2337
2338 static void wpa_scan_results_free(struct wpa_scan_results *res)
2339 {
2340         size_t i;
2341
2342         if (res == NULL)
2343                 return;
2344
2345         for (i = 0; i < res->num; i++)
2346                 os_free(res->res[i]);
2347         os_free(res->res);
2348         os_free(res);
2349 }
2350
2351
2352 static struct wpa_scan_results *
2353 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2354 {
2355         struct nl_msg *msg;
2356         struct wpa_scan_results *res;
2357         int ret;
2358         struct nl80211_bss_info_arg arg;
2359
2360         res = os_zalloc(sizeof(*res));
2361         if (res == NULL)
2362                 return NULL;
2363         msg = nlmsg_alloc();
2364         if (!msg)
2365                 goto nla_put_failure;
2366
2367         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2368                     NL80211_CMD_GET_SCAN, 0);
2369         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2370
2371         arg.drv = drv;
2372         arg.res = res;
2373         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2374         msg = NULL;
2375         if (ret == 0) {
2376                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2377                            (unsigned long) res->num);
2378                 return res;
2379         }
2380         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2381                    "(%s)", ret, strerror(-ret));
2382 nla_put_failure:
2383         nlmsg_free(msg);
2384         wpa_scan_results_free(res);
2385         return NULL;
2386 }
2387
2388
2389 /**
2390  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2391  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2392  * Returns: Scan results on success, -1 on failure
2393  */
2394 static struct wpa_scan_results *
2395 wpa_driver_nl80211_get_scan_results(void *priv)
2396 {
2397         struct i802_bss *bss = priv;
2398         struct wpa_driver_nl80211_data *drv = bss->drv;
2399         struct wpa_scan_results *res;
2400
2401         res = nl80211_get_scan_results(drv);
2402         if (res)
2403                 wpa_driver_nl80211_check_bss_status(drv, res);
2404         return res;
2405 }
2406
2407
2408 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2409 {
2410         struct wpa_scan_results *res;
2411         size_t i;
2412
2413         res = nl80211_get_scan_results(drv);
2414         if (res == NULL) {
2415                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2416                 return;
2417         }
2418
2419         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2420         for (i = 0; i < res->num; i++) {
2421                 struct wpa_scan_res *r = res->res[i];
2422                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2423                            (int) i, (int) res->num, MAC2STR(r->bssid),
2424                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2425                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2426         }
2427
2428         wpa_scan_results_free(res);
2429 }
2430
2431
2432 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2433                                       enum wpa_alg alg, const u8 *addr,
2434                                       int key_idx, int set_tx,
2435                                       const u8 *seq, size_t seq_len,
2436                                       const u8 *key, size_t key_len)
2437 {
2438         struct i802_bss *bss = priv;
2439         struct wpa_driver_nl80211_data *drv = bss->drv;
2440         int ifindex = if_nametoindex(ifname);
2441         struct nl_msg *msg;
2442         int ret;
2443
2444         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2445                    "set_tx=%d seq_len=%lu key_len=%lu",
2446                    __func__, ifindex, alg, addr, key_idx, set_tx,
2447                    (unsigned long) seq_len, (unsigned long) key_len);
2448
2449         msg = nlmsg_alloc();
2450         if (!msg)
2451                 return -ENOMEM;
2452
2453         if (alg == WPA_ALG_NONE) {
2454                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2455                             0, NL80211_CMD_DEL_KEY, 0);
2456         } else {
2457                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2458                             0, NL80211_CMD_NEW_KEY, 0);
2459                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2460                 switch (alg) {
2461                 case WPA_ALG_WEP:
2462                         if (key_len == 5)
2463                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2464                                             WLAN_CIPHER_SUITE_WEP40);
2465                         else
2466                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2467                                             WLAN_CIPHER_SUITE_WEP104);
2468                         break;
2469                 case WPA_ALG_TKIP:
2470                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2471                                     WLAN_CIPHER_SUITE_TKIP);
2472                         break;
2473                 case WPA_ALG_CCMP:
2474                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2475                                     WLAN_CIPHER_SUITE_CCMP);
2476                         break;
2477                 case WPA_ALG_IGTK:
2478                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2479                                     WLAN_CIPHER_SUITE_AES_CMAC);
2480                         break;
2481                 default:
2482                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2483                                    "algorithm %d", __func__, alg);
2484                         nlmsg_free(msg);
2485                         return -1;
2486                 }
2487         }
2488
2489         if (seq && seq_len)
2490                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2491
2492         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2493         {
2494                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2495                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2496         }
2497         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2498         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2499
2500         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2501         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2502                 ret = 0;
2503         if (ret)
2504                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2505                            ret, strerror(-ret));
2506
2507         /*
2508          * If we failed or don't need to set the default TX key (below),
2509          * we're done here.
2510          */
2511         if (ret || !set_tx || alg == WPA_ALG_NONE)
2512                 return ret;
2513 #ifdef HOSTAPD
2514         if (addr)
2515                 return ret;
2516 #else /* HOSTAPD */
2517         if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2518                 return ret;
2519 #endif /* HOSTAPD */
2520
2521         msg = nlmsg_alloc();
2522         if (!msg)
2523                 return -ENOMEM;
2524
2525         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2526                     0, NL80211_CMD_SET_KEY, 0);
2527         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2528         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2529         if (alg == WPA_ALG_IGTK)
2530                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2531         else
2532                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2533
2534         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2535         if (ret == -ENOENT)
2536                 ret = 0;
2537         if (ret)
2538                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2539                            "err=%d %s)", ret, strerror(-ret));
2540         return ret;
2541
2542 nla_put_failure:
2543         return -ENOBUFS;
2544 }
2545
2546
2547 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2548                       int key_idx, int defkey,
2549                       const u8 *seq, size_t seq_len,
2550                       const u8 *key, size_t key_len)
2551 {
2552         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2553         if (!key_attr)
2554                 return -1;
2555
2556         if (defkey && alg == WPA_ALG_IGTK)
2557                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2558         else if (defkey)
2559                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2560
2561         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2562
2563         switch (alg) {
2564         case WPA_ALG_WEP:
2565                 if (key_len == 5)
2566                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2567                                     WLAN_CIPHER_SUITE_WEP40);
2568                 else
2569                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2570                                     WLAN_CIPHER_SUITE_WEP104);
2571                 break;
2572         case WPA_ALG_TKIP:
2573                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2574                 break;
2575         case WPA_ALG_CCMP:
2576                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2577                 break;
2578         case WPA_ALG_IGTK:
2579                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2580                             WLAN_CIPHER_SUITE_AES_CMAC);
2581                 break;
2582         default:
2583                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2584                            "algorithm %d", __func__, alg);
2585                 return -1;
2586         }
2587
2588         if (seq && seq_len)
2589                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2590
2591         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2592
2593         nla_nest_end(msg, key_attr);
2594
2595         return 0;
2596  nla_put_failure:
2597         return -1;
2598 }
2599
2600
2601 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2602                                  struct nl_msg *msg)
2603 {
2604         int i, privacy = 0;
2605         struct nlattr *nl_keys, *nl_key;
2606
2607         for (i = 0; i < 4; i++) {
2608                 if (!params->wep_key[i])
2609                         continue;
2610                 privacy = 1;
2611                 break;
2612         }
2613         if (!privacy)
2614                 return 0;
2615
2616         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2617
2618         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2619         if (!nl_keys)
2620                 goto nla_put_failure;
2621
2622         for (i = 0; i < 4; i++) {
2623                 if (!params->wep_key[i])
2624                         continue;
2625
2626                 nl_key = nla_nest_start(msg, i);
2627                 if (!nl_key)
2628                         goto nla_put_failure;
2629
2630                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2631                         params->wep_key[i]);
2632                 if (params->wep_key_len[i] == 5)
2633                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2634                                     WLAN_CIPHER_SUITE_WEP40);
2635                 else
2636                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2637                                     WLAN_CIPHER_SUITE_WEP104);
2638
2639                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2640
2641                 if (i == params->wep_tx_keyidx)
2642                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2643
2644                 nla_nest_end(msg, nl_key);
2645         }
2646         nla_nest_end(msg, nl_keys);
2647
2648         return 0;
2649
2650 nla_put_failure:
2651         return -ENOBUFS;
2652 }
2653
2654
2655 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2656                                    const u8 *addr, int cmd, u16 reason_code,
2657                                    int local_state_change)
2658 {
2659         int ret = -1;
2660         struct nl_msg *msg;
2661
2662         msg = nlmsg_alloc();
2663         if (!msg)
2664                 return -1;
2665
2666         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2667
2668         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2669         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2670         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2671         if (local_state_change)
2672                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2673
2674         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2675         msg = NULL;
2676         if (ret) {
2677                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2678                            "(%s)", ret, strerror(-ret));
2679                 goto nla_put_failure;
2680         }
2681         ret = 0;
2682
2683 nla_put_failure:
2684         nlmsg_free(msg);
2685         return ret;
2686 }
2687
2688
2689 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2690                                          const u8 *addr, int reason_code)
2691 {
2692         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2693                    __func__, MAC2STR(addr), reason_code);
2694         drv->associated = 0;
2695         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2696                                        reason_code, 0);
2697 }
2698
2699
2700 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2701                                              int reason_code)
2702 {
2703         struct i802_bss *bss = priv;
2704         struct wpa_driver_nl80211_data *drv = bss->drv;
2705         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2706                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2707         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2708                    __func__, MAC2STR(addr), reason_code);
2709         drv->associated = 0;
2710         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2711                                        reason_code, 0);
2712 }
2713
2714
2715 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2716                                            int reason_code)
2717 {
2718         struct i802_bss *bss = priv;
2719         struct wpa_driver_nl80211_data *drv = bss->drv;
2720         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2721                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2722         wpa_printf(MSG_DEBUG, "%s", __func__);
2723         drv->associated = 0;
2724         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2725                                        reason_code, 0);
2726 }
2727
2728
2729 static int wpa_driver_nl80211_authenticate(
2730         void *priv, struct wpa_driver_auth_params *params)
2731 {
2732         struct i802_bss *bss = priv;
2733         struct wpa_driver_nl80211_data *drv = bss->drv;
2734         int ret = -1, i;
2735         struct nl_msg *msg;
2736         enum nl80211_auth_type type;
2737         int count = 0;
2738
2739         drv->associated = 0;
2740         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2741         /* FIX: IBSS mode */
2742         if (drv->nlmode != NL80211_IFTYPE_STATION)
2743                 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2744
2745         if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2746                 return -1;
2747
2748 retry:
2749         msg = nlmsg_alloc();
2750         if (!msg)
2751                 return -1;
2752
2753         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2754                    drv->ifindex);
2755
2756         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2757                     NL80211_CMD_AUTHENTICATE, 0);
2758
2759         for (i = 0; i < 4; i++) {
2760                 if (!params->wep_key[i])
2761                         continue;
2762                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2763                                            NULL, i,
2764                                            i == params->wep_tx_keyidx, NULL, 0,
2765                                            params->wep_key[i],
2766                                            params->wep_key_len[i]);
2767                 if (params->wep_tx_keyidx != i)
2768                         continue;
2769                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2770                                params->wep_key[i], params->wep_key_len[i])) {
2771                         nlmsg_free(msg);
2772                         return -1;
2773                 }
2774         }
2775
2776         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2777         if (params->bssid) {
2778                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2779                            MAC2STR(params->bssid));
2780                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2781         }
2782         if (params->freq) {
2783                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2784                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2785         }
2786         if (params->ssid) {
2787                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2788                                   params->ssid, params->ssid_len);
2789                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2790                         params->ssid);
2791         }
2792         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2793         if (params->ie)
2794                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2795         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2796                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2797         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2798                 type = NL80211_AUTHTYPE_SHARED_KEY;
2799         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2800                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2801         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2802                 type = NL80211_AUTHTYPE_FT;
2803         else
2804                 goto nla_put_failure;
2805         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2806         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2807         if (params->local_state_change) {
2808                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2809                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2810         }
2811
2812         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2813         msg = NULL;
2814         if (ret) {
2815                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2816                            "(%s)", ret, strerror(-ret));
2817                 count++;
2818                 if (ret == -EALREADY && count == 1 && params->bssid &&
2819                     !params->local_state_change) {
2820                         /*
2821                          * mac80211 does not currently accept new
2822                          * authentication if we are already authenticated. As a
2823                          * workaround, force deauthentication and try again.
2824                          */
2825                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2826                                    "after forced deauthentication");
2827                         wpa_driver_nl80211_deauthenticate(
2828                                 bss, params->bssid,
2829                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2830                         nlmsg_free(msg);
2831                         goto retry;
2832                 }
2833                 goto nla_put_failure;
2834         }
2835         ret = 0;
2836         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2837                    "successfully");
2838
2839 nla_put_failure:
2840         nlmsg_free(msg);
2841         return ret;
2842 }
2843
2844
2845 struct phy_info_arg {
2846         u16 *num_modes;
2847         struct hostapd_hw_modes *modes;
2848 };
2849
2850 static int phy_info_handler(struct nl_msg *msg, void *arg)
2851 {
2852         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2853         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2854         struct phy_info_arg *phy_info = arg;
2855
2856         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2857
2858         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2859         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2860                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2861                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2862                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2863                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2864                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2865                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2866         };
2867
2868         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2869         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2870                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2871                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2872         };
2873
2874         struct nlattr *nl_band;
2875         struct nlattr *nl_freq;
2876         struct nlattr *nl_rate;
2877         int rem_band, rem_freq, rem_rate;
2878         struct hostapd_hw_modes *mode;
2879         int idx, mode_is_set;
2880
2881         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2882                   genlmsg_attrlen(gnlh, 0), NULL);
2883
2884         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2885                 return NL_SKIP;
2886
2887         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2888                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2889                 if (!mode)
2890                         return NL_SKIP;
2891                 phy_info->modes = mode;
2892
2893                 mode_is_set = 0;
2894
2895                 mode = &phy_info->modes[*(phy_info->num_modes)];
2896                 memset(mode, 0, sizeof(*mode));
2897                 *(phy_info->num_modes) += 1;
2898
2899                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2900                           nla_len(nl_band), NULL);
2901
2902                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2903                         mode->ht_capab = nla_get_u16(
2904                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2905                 }
2906
2907                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2908                         mode->a_mpdu_params |= nla_get_u8(
2909                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2910                                 0x03;
2911                 }
2912
2913                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2914                         mode->a_mpdu_params |= nla_get_u8(
2915                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2916                                 2;
2917                 }
2918
2919                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2920                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2921                         u8 *mcs;
2922                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2923                         os_memcpy(mode->mcs_set, mcs, 16);
2924                 }
2925
2926                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2927                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2928                                   nla_len(nl_freq), freq_policy);
2929                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2930                                 continue;
2931                         mode->num_channels++;
2932                 }
2933
2934                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2935                 if (!mode->channels)
2936                         return NL_SKIP;
2937
2938                 idx = 0;
2939
2940                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2941                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2942                                   nla_len(nl_freq), freq_policy);
2943                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2944                                 continue;
2945
2946                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2947                         mode->channels[idx].flag = 0;
2948
2949                         if (!mode_is_set) {
2950                                 /* crude heuristic */
2951                                 if (mode->channels[idx].freq < 4000)
2952                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2953                                 else
2954                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2955                                 mode_is_set = 1;
2956                         }
2957
2958                         /* crude heuristic */
2959                         if (mode->channels[idx].freq < 4000)
2960                                 if (mode->channels[idx].freq == 2484)
2961                                         mode->channels[idx].chan = 14;
2962                                 else
2963                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2964                         else
2965                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2966
2967                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2968                                 mode->channels[idx].flag |=
2969                                         HOSTAPD_CHAN_DISABLED;
2970                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2971                                 mode->channels[idx].flag |=
2972                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2973                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2974                                 mode->channels[idx].flag |=
2975                                         HOSTAPD_CHAN_NO_IBSS;
2976                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2977                                 mode->channels[idx].flag |=
2978                                         HOSTAPD_CHAN_RADAR;
2979
2980                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2981                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2982                                 mode->channels[idx].max_tx_power =
2983                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2984
2985                         idx++;
2986                 }
2987
2988                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2989                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2990                                   nla_len(nl_rate), rate_policy);
2991                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2992                                 continue;
2993                         mode->num_rates++;
2994                 }
2995
2996                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2997                 if (!mode->rates)
2998                         return NL_SKIP;
2999
3000                 idx = 0;
3001
3002                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3003                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3004                                   nla_len(nl_rate), rate_policy);
3005                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3006                                 continue;
3007                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
3008
3009                         /* crude heuristic */
3010                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
3011                             mode->rates[idx] > 200)
3012                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
3013
3014                         idx++;
3015                 }
3016         }
3017
3018         return NL_SKIP;
3019 }
3020
3021 static struct hostapd_hw_modes *
3022 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3023 {
3024         u16 m;
3025         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3026         int i, mode11g_idx = -1;
3027
3028         /* If only 802.11g mode is included, use it to construct matching
3029          * 802.11b mode data. */
3030
3031         for (m = 0; m < *num_modes; m++) {
3032                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3033                         return modes; /* 802.11b already included */
3034                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3035                         mode11g_idx = m;
3036         }
3037
3038         if (mode11g_idx < 0)
3039                 return modes; /* 2.4 GHz band not supported at all */
3040
3041         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3042         if (nmodes == NULL)
3043                 return modes; /* Could not add 802.11b mode */
3044
3045         mode = &nmodes[*num_modes];
3046         os_memset(mode, 0, sizeof(*mode));
3047         (*num_modes)++;
3048         modes = nmodes;
3049
3050         mode->mode = HOSTAPD_MODE_IEEE80211B;
3051
3052         mode11g = &modes[mode11g_idx];
3053         mode->num_channels = mode11g->num_channels;
3054         mode->channels = os_malloc(mode11g->num_channels *
3055                                    sizeof(struct hostapd_channel_data));
3056         if (mode->channels == NULL) {
3057                 (*num_modes)--;
3058                 return modes; /* Could not add 802.11b mode */
3059         }
3060         os_memcpy(mode->channels, mode11g->channels,
3061                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
3062
3063         mode->num_rates = 0;
3064         mode->rates = os_malloc(4 * sizeof(int));
3065         if (mode->rates == NULL) {
3066                 os_free(mode->channels);
3067                 (*num_modes)--;
3068                 return modes; /* Could not add 802.11b mode */
3069         }
3070
3071         for (i = 0; i < mode11g->num_rates; i++) {
3072                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3073                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3074                         continue;
3075                 mode->rates[mode->num_rates] = mode11g->rates[i];
3076                 mode->num_rates++;
3077                 if (mode->num_rates == 4)
3078                         break;
3079         }
3080
3081         if (mode->num_rates == 0) {
3082                 os_free(mode->channels);
3083                 os_free(mode->rates);
3084                 (*num_modes)--;
3085                 return modes; /* No 802.11b rates */
3086         }
3087
3088         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3089                    "information");
3090
3091         return modes;
3092 }
3093
3094
3095 static struct hostapd_hw_modes *
3096 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
3097 {
3098         struct i802_bss *bss = priv;
3099         struct wpa_driver_nl80211_data *drv = bss->drv;
3100         struct nl_msg *msg;
3101         struct phy_info_arg result = {
3102                 .num_modes = num_modes,
3103                 .modes = NULL,
3104         };
3105
3106         *num_modes = 0;
3107         *flags = 0;
3108
3109         msg = nlmsg_alloc();
3110         if (!msg)
3111                 return NULL;
3112
3113         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3114                     0, NL80211_CMD_GET_WIPHY, 0);
3115
3116         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3117
3118         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
3119                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
3120  nla_put_failure:
3121         return NULL;
3122 }
3123
3124
3125 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
3126                                          const void *data, size_t len,
3127                                          int encrypt)
3128 {
3129         __u8 rtap_hdr[] = {
3130                 0x00, 0x00, /* radiotap version */
3131                 0x0e, 0x00, /* radiotap length */
3132                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
3133                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
3134                 0x00,       /* padding */
3135                 0x00, 0x00, /* RX and TX flags to indicate that */
3136                 0x00, 0x00, /* this is the injected frame directly */
3137         };
3138         struct iovec iov[2] = {
3139                 {
3140                         .iov_base = &rtap_hdr,
3141                         .iov_len = sizeof(rtap_hdr),
3142                 },
3143                 {
3144                         .iov_base = (void *) data,
3145                         .iov_len = len,
3146                 }
3147         };
3148         struct msghdr msg = {
3149                 .msg_name = NULL,
3150                 .msg_namelen = 0,
3151                 .msg_iov = iov,
3152                 .msg_iovlen = 2,
3153                 .msg_control = NULL,
3154                 .msg_controllen = 0,
3155                 .msg_flags = 0,
3156         };
3157
3158         if (encrypt)
3159                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3160
3161         return sendmsg(drv->monitor_sock, &msg, 0);
3162 }
3163
3164
3165 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3166                                         size_t data_len)
3167 {
3168         struct i802_bss *bss = priv;
3169         struct wpa_driver_nl80211_data *drv = bss->drv;
3170         struct ieee80211_mgmt *mgmt;
3171         int encrypt = 1;
3172         u16 fc;
3173
3174         mgmt = (struct ieee80211_mgmt *) data;
3175         fc = le_to_host16(mgmt->frame_control);
3176
3177         if (drv->nlmode == NL80211_IFTYPE_STATION &&
3178             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3179             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3180                 /*
3181                  * The use of last_mgmt_freq is a bit of a hack,
3182                  * but it works due to the single-threaded nature
3183                  * of wpa_supplicant.
3184                  */
3185                 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq,
3186                                               data, data_len, NULL);
3187         }
3188
3189         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3190             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3191                 /*
3192                  * Only one of the authentication frame types is encrypted.
3193                  * In order for static WEP encryption to work properly (i.e.,
3194                  * to not encrypt the frame), we need to tell mac80211 about
3195                  * the frames that must not be encrypted.
3196                  */
3197                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3198                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3199                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3200                         encrypt = 0;
3201         }
3202
3203         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3204 }
3205
3206
3207 static int wpa_driver_nl80211_set_beacon(void *priv,
3208                                          const u8 *head, size_t head_len,
3209                                          const u8 *tail, size_t tail_len,
3210                                          int dtim_period, int beacon_int)
3211 {
3212         struct i802_bss *bss = priv;
3213         struct wpa_driver_nl80211_data *drv = bss->drv;
3214         struct nl_msg *msg;
3215         u8 cmd = NL80211_CMD_NEW_BEACON;
3216         int ret;
3217         int beacon_set;
3218         int ifindex = if_nametoindex(bss->ifname);
3219
3220         beacon_set = bss->beacon_set;
3221
3222         msg = nlmsg_alloc();
3223         if (!msg)
3224                 return -ENOMEM;
3225
3226         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3227                    beacon_set);
3228         if (beacon_set)
3229                 cmd = NL80211_CMD_SET_BEACON;
3230
3231         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3232                     0, cmd, 0);
3233         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3234         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3235         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3236         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3237         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3238
3239         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3240         if (ret) {
3241                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3242                            ret, strerror(-ret));
3243         } else {
3244                 bss->beacon_set = 1;
3245         }
3246         return ret;
3247  nla_put_failure:
3248         return -ENOBUFS;
3249 }
3250
3251
3252 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3253                                        int freq, int ht_enabled,
3254                                        int sec_channel_offset)
3255 {
3256         struct nl_msg *msg;
3257         int ret;
3258
3259         msg = nlmsg_alloc();
3260         if (!msg)
3261                 return -1;
3262
3263         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3264                     NL80211_CMD_SET_WIPHY, 0);
3265
3266         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3267         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3268         if (ht_enabled) {
3269                 switch (sec_channel_offset) {
3270                 case -1:
3271                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3272                                     NL80211_CHAN_HT40MINUS);
3273                         break;
3274                 case 1:
3275                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3276                                     NL80211_CHAN_HT40PLUS);
3277                         break;
3278                 default:
3279                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3280                                     NL80211_CHAN_HT20);
3281                         break;
3282                 }
3283         }
3284
3285         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3286         if (ret == 0)
3287                 return 0;
3288         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3289                    "%d (%s)", freq, ret, strerror(-ret));
3290 nla_put_failure:
3291         return -1;
3292 }
3293
3294
3295 static int wpa_driver_nl80211_sta_add(void *priv,
3296                                       struct hostapd_sta_add_params *params)
3297 {
3298         struct i802_bss *bss = priv;
3299         struct wpa_driver_nl80211_data *drv = bss->drv;
3300         struct nl_msg *msg;
3301         int ret = -ENOBUFS;
3302
3303         msg = nlmsg_alloc();
3304         if (!msg)
3305                 return -ENOMEM;
3306
3307         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3308                     0, NL80211_CMD_NEW_STATION, 0);
3309
3310         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3311         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3312         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3313         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3314                 params->supp_rates);
3315         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3316                     params->listen_interval);
3317         if (params->ht_capabilities) {
3318                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3319                         sizeof(*params->ht_capabilities),
3320                         params->ht_capabilities);
3321         }
3322
3323         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3324         if (ret)
3325                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3326                            "result: %d (%s)", ret, strerror(-ret));
3327         if (ret == -EEXIST)
3328                 ret = 0;
3329  nla_put_failure:
3330         return ret;
3331 }
3332
3333
3334 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3335 {
3336         struct i802_bss *bss = priv;
3337         struct wpa_driver_nl80211_data *drv = bss->drv;
3338         struct nl_msg *msg;
3339         int ret;
3340
3341         msg = nlmsg_alloc();
3342         if (!msg)
3343                 return -ENOMEM;
3344
3345         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3346                     0, NL80211_CMD_DEL_STATION, 0);
3347
3348         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3349                     if_nametoindex(bss->ifname));
3350         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3351
3352         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3353         if (ret == -ENOENT)
3354                 return 0;
3355         return ret;
3356  nla_put_failure:
3357         return -ENOBUFS;
3358 }
3359
3360
3361 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3362                                  int ifidx)
3363 {
3364         struct nl_msg *msg;
3365
3366         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3367
3368 #ifdef HOSTAPD
3369         /* stop listening for EAPOL on this interface */
3370         del_ifidx(drv, ifidx);
3371 #endif /* HOSTAPD */
3372
3373         msg = nlmsg_alloc();
3374         if (!msg)
3375                 goto nla_put_failure;
3376
3377         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3378                     0, NL80211_CMD_DEL_INTERFACE, 0);
3379         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3380
3381         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3382                 return;
3383  nla_put_failure:
3384         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3385 }
3386
3387
3388 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3389                                      const char *ifname,
3390                                      enum nl80211_iftype iftype,
3391                                      const u8 *addr, int wds)
3392 {
3393         struct nl_msg *msg, *flags = NULL;
3394         int ifidx;
3395         int ret = -ENOBUFS;
3396
3397         msg = nlmsg_alloc();
3398         if (!msg)
3399                 return -1;
3400
3401         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3402                     0, NL80211_CMD_NEW_INTERFACE, 0);
3403         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3404         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3405         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3406
3407         if (iftype == NL80211_IFTYPE_MONITOR) {
3408                 int err;
3409
3410                 flags = nlmsg_alloc();
3411                 if (!flags)
3412                         goto nla_put_failure;
3413
3414                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3415
3416                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3417
3418                 nlmsg_free(flags);
3419
3420                 if (err)
3421                         goto nla_put_failure;
3422         } else if (wds) {
3423                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3424         }
3425
3426         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3427         if (ret) {
3428  nla_put_failure:
3429                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3430                            ifname, ret, strerror(-ret));
3431                 return ret;
3432         }
3433
3434         ifidx = if_nametoindex(ifname);
3435         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3436                    ifname, ifidx);
3437
3438         if (ifidx <= 0)
3439                 return -1;
3440
3441 #ifdef HOSTAPD
3442         /* start listening for EAPOL on this interface */
3443         add_ifidx(drv, ifidx);
3444 #endif /* HOSTAPD */
3445
3446         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3447             linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3448                 nl80211_remove_iface(drv, ifidx);
3449                 return -1;
3450         }
3451
3452         return ifidx;
3453 }
3454
3455
3456 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3457                                 const char *ifname, enum nl80211_iftype iftype,
3458                                 const u8 *addr, int wds)
3459 {
3460         int ret;
3461
3462         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3463
3464         /* if error occured and interface exists already */
3465         if (ret == -ENFILE && if_nametoindex(ifname)) {
3466                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3467
3468                 /* Try to remove the interface that was already there. */
3469                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3470
3471                 /* Try to create the interface again */
3472                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3473                                                 wds);
3474         }
3475
3476         if (ret >= 0 && drv->disable_11b_rates)
3477                 nl80211_disable_11b_rates(drv, ret, 1);
3478
3479         return ret;
3480 }
3481
3482
3483 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3484 {
3485         struct ieee80211_hdr *hdr;
3486         u16 fc;
3487         union wpa_event_data event;
3488
3489         hdr = (struct ieee80211_hdr *) buf;
3490         fc = le_to_host16(hdr->frame_control);
3491
3492         os_memset(&event, 0, sizeof(event));
3493         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3494         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3495         event.tx_status.dst = hdr->addr1;
3496         event.tx_status.data = buf;
3497         event.tx_status.data_len = len;
3498         event.tx_status.ack = ok;
3499         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3500 }
3501
3502
3503 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3504                              u8 *buf, size_t len)
3505 {
3506         union wpa_event_data event;
3507         os_memset(&event, 0, sizeof(event));
3508         event.rx_from_unknown.frame = buf;
3509         event.rx_from_unknown.len = len;
3510         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3511 }
3512
3513
3514 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3515                          u8 *buf, size_t len, int datarate, int ssi_signal)
3516 {
3517         struct ieee80211_hdr *hdr;
3518         u16 fc;
3519         union wpa_event_data event;
3520
3521         hdr = (struct ieee80211_hdr *) buf;
3522         fc = le_to_host16(hdr->frame_control);
3523
3524         switch (WLAN_FC_GET_TYPE(fc)) {
3525         case WLAN_FC_TYPE_MGMT:
3526                 os_memset(&event, 0, sizeof(event));
3527                 event.rx_mgmt.frame = buf;
3528                 event.rx_mgmt.frame_len = len;
3529                 event.rx_mgmt.datarate = datarate;
3530                 event.rx_mgmt.ssi_signal = ssi_signal;
3531                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3532                 break;
3533         case WLAN_FC_TYPE_CTRL:
3534                 /* can only get here with PS-Poll frames */
3535                 wpa_printf(MSG_DEBUG, "CTRL");
3536                 from_unknown_sta(drv, buf, len);
3537                 break;
3538         case WLAN_FC_TYPE_DATA:
3539                 from_unknown_sta(drv, buf, len);
3540                 break;
3541         }
3542 }
3543
3544
3545 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3546 {
3547         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3548         int len;
3549         unsigned char buf[3000];
3550         struct ieee80211_radiotap_iterator iter;
3551         int ret;
3552         int datarate = 0, ssi_signal = 0;
3553         int injected = 0, failed = 0, rxflags = 0;
3554
3555         len = recv(sock, buf, sizeof(buf), 0);
3556         if (len < 0) {
3557                 perror("recv");
3558                 return;
3559         }
3560
3561         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3562                 printf("received invalid radiotap frame\n");
3563                 return;
3564         }
3565
3566         while (1) {
3567                 ret = ieee80211_radiotap_iterator_next(&iter);
3568                 if (ret == -ENOENT)
3569                         break;
3570                 if (ret) {
3571                         printf("received invalid radiotap frame (%d)\n", ret);
3572                         return;
3573                 }
3574                 switch (iter.this_arg_index) {
3575                 case IEEE80211_RADIOTAP_FLAGS:
3576                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3577                                 len -= 4;
3578                         break;
3579                 case IEEE80211_RADIOTAP_RX_FLAGS:
3580                         rxflags = 1;
3581                         break;
3582                 case IEEE80211_RADIOTAP_TX_FLAGS:
3583                         injected = 1;
3584                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3585                                         IEEE80211_RADIOTAP_F_TX_FAIL;
3586                         break;
3587                 case IEEE80211_RADIOTAP_DATA_RETRIES:
3588                         break;
3589                 case IEEE80211_RADIOTAP_CHANNEL:
3590                         /* TODO: convert from freq/flags to channel number */
3591                         break;
3592                 case IEEE80211_RADIOTAP_RATE:
3593                         datarate = *iter.this_arg * 5;
3594                         break;
3595                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3596                         ssi_signal = *iter.this_arg;
3597                         break;
3598                 }
3599         }
3600
3601         if (rxflags && injected)
3602                 return;
3603
3604         if (!injected)
3605                 handle_frame(drv, buf + iter.max_length,
3606                              len - iter.max_length, datarate, ssi_signal);
3607         else
3608                 handle_tx_callback(drv->ctx, buf + iter.max_length,
3609                                    len - iter.max_length, !failed);
3610 }
3611
3612
3613 /*
3614  * we post-process the filter code later and rewrite
3615  * this to the offset to the last instruction
3616  */
3617 #define PASS    0xFF
3618 #define FAIL    0xFE
3619
3620 static struct sock_filter msock_filter_insns[] = {
3621         /*
3622          * do a little-endian load of the radiotap length field
3623          */
3624         /* load lower byte into A */
3625         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
3626         /* put it into X (== index register) */
3627         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3628         /* load upper byte into A */
3629         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
3630         /* left-shift it by 8 */
3631         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3632         /* or with X */
3633         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3634         /* put result into X */
3635         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3636
3637         /*
3638          * Allow management frames through, this also gives us those
3639          * management frames that we sent ourselves with status
3640          */
3641         /* load the lower byte of the IEEE 802.11 frame control field */
3642         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
3643         /* mask off frame type and version */
3644         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3645         /* accept frame if it's both 0, fall through otherwise */
3646         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3647
3648         /*
3649          * TODO: add a bit to radiotap RX flags that indicates
3650          * that the sending station is not associated, then
3651          * add a filter here that filters on our DA and that flag
3652          * to allow us to deauth frames to that bad station.
3653          *
3654          * Not a regression -- we didn't do it before either.
3655          */
3656
3657 #if 0
3658         /*
3659          * drop non-data frames
3660          */
3661         /* load the lower byte of the frame control field */
3662         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3663         /* mask off QoS bit */
3664         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
3665         /* drop non-data frames */
3666         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
3667 #endif
3668         /* load the upper byte of the frame control field */
3669         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
3670         /* mask off toDS/fromDS */
3671         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
3672         /* accept WDS frames */
3673         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
3674
3675         /*
3676          * add header length to index
3677          */
3678         /* load the lower byte of the frame control field */
3679         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3680         /* mask off QoS bit */
3681         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
3682         /* right shift it by 6 to give 0 or 2 */
3683         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
3684         /* add data frame header length */
3685         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
3686         /* add index, was start of 802.11 header */
3687         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
3688         /* move to index, now start of LL header */
3689         BPF_STMT(BPF_MISC | BPF_TAX, 0),
3690
3691         /*
3692          * Accept empty data frames, we use those for
3693          * polling activity.
3694          */
3695         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
3696         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3697
3698         /*
3699          * Accept EAPOL frames
3700          */
3701         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
3702         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3703         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
3704         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3705
3706         /* keep these last two statements or change the code below */
3707         /* return 0 == "DROP" */
3708         BPF_STMT(BPF_RET | BPF_K, 0),
3709         /* return ~0 == "keep all" */
3710         BPF_STMT(BPF_RET | BPF_K, ~0),
3711 };
3712
3713 static struct sock_fprog msock_filter = {
3714         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3715         .filter = msock_filter_insns,
3716 };
3717
3718
3719 static int add_monitor_filter(int s)
3720 {
3721         int idx;
3722
3723         /* rewrite all PASS/FAIL jump offsets */
3724         for (idx = 0; idx < msock_filter.len; idx++) {
3725                 struct sock_filter *insn = &msock_filter_insns[idx];
3726
3727                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3728                         if (insn->code == (BPF_JMP|BPF_JA)) {
3729                                 if (insn->k == PASS)
3730                                         insn->k = msock_filter.len - idx - 2;
3731                                 else if (insn->k == FAIL)
3732                                         insn->k = msock_filter.len - idx - 3;
3733                         }
3734
3735                         if (insn->jt == PASS)
3736                                 insn->jt = msock_filter.len - idx - 2;
3737                         else if (insn->jt == FAIL)
3738                                 insn->jt = msock_filter.len - idx - 3;
3739
3740                         if (insn->jf == PASS)
3741                                 insn->jf = msock_filter.len - idx - 2;
3742                         else if (insn->jf == FAIL)
3743                                 insn->jf = msock_filter.len - idx - 3;
3744                 }
3745         }
3746
3747         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3748                        &msock_filter, sizeof(msock_filter))) {
3749                 perror("SO_ATTACH_FILTER");
3750                 return -1;
3751         }
3752
3753         return 0;
3754 }
3755
3756
3757 static void nl80211_remove_monitor_interface(
3758         struct wpa_driver_nl80211_data *drv)
3759 {
3760         if (drv->monitor_ifidx >= 0) {
3761                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3762                 drv->monitor_ifidx = -1;
3763         }
3764         if (drv->monitor_sock >= 0) {
3765                 eloop_unregister_read_sock(drv->monitor_sock);
3766                 close(drv->monitor_sock);
3767                 drv->monitor_sock = -1;
3768         }
3769 }
3770
3771
3772 static int
3773 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3774 {
3775         char buf[IFNAMSIZ];
3776         struct sockaddr_ll ll;
3777         int optval;
3778         socklen_t optlen;
3779
3780         snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3781         buf[IFNAMSIZ - 1] = '\0';
3782
3783         drv->monitor_ifidx =
3784                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3785                                      0);
3786
3787         if (drv->monitor_ifidx < 0)
3788                 return -1;
3789
3790         if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3791                 goto error;
3792
3793         memset(&ll, 0, sizeof(ll));
3794         ll.sll_family = AF_PACKET;
3795         ll.sll_ifindex = drv->monitor_ifidx;
3796         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3797         if (drv->monitor_sock < 0) {
3798                 perror("socket[PF_PACKET,SOCK_RAW]");
3799                 goto error;
3800         }
3801
3802         if (add_monitor_filter(drv->monitor_sock)) {
3803                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3804                            "interface; do filtering in user space");
3805                 /* This works, but will cost in performance. */
3806         }
3807
3808         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3809                 perror("monitor socket bind");
3810                 goto error;
3811         }
3812
3813         optlen = sizeof(optval);
3814         optval = 20;
3815         if (setsockopt
3816             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3817                 perror("Failed to set socket priority");
3818                 goto error;
3819         }
3820
3821         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3822                                      drv, NULL)) {
3823                 printf("Could not register monitor read socket\n");
3824                 goto error;
3825         }
3826
3827         return 0;
3828  error:
3829         nl80211_remove_monitor_interface(drv);
3830         return -1;
3831 }
3832
3833
3834 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3835
3836 static int wpa_driver_nl80211_hapd_send_eapol(
3837         void *priv, const u8 *addr, const u8 *data,
3838         size_t data_len, int encrypt, const u8 *own_addr)
3839 {
3840         struct i802_bss *bss = priv;
3841         struct wpa_driver_nl80211_data *drv = bss->drv;
3842         struct ieee80211_hdr *hdr;
3843         size_t len;
3844         u8 *pos;
3845         int res;
3846 #if 0 /* FIX */
3847         int qos = sta->flags & WPA_STA_WMM;
3848 #else
3849         int qos = 0;
3850 #endif
3851
3852         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3853                 data_len;
3854         hdr = os_zalloc(len);
3855         if (hdr == NULL) {
3856                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3857                        (unsigned long) len);
3858                 return -1;
3859         }
3860
3861         hdr->frame_control =
3862                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3863         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3864         if (encrypt)
3865                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3866 #if 0 /* To be enabled if qos determination is added above */
3867         if (qos) {
3868                 hdr->frame_control |=
3869                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3870         }
3871 #endif
3872
3873         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3874         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3875         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3876         pos = (u8 *) (hdr + 1);
3877
3878 #if 0 /* To be enabled if qos determination is added above */
3879         if (qos) {
3880                 /* add an empty QoS header if needed */
3881                 pos[0] = 0;
3882                 pos[1] = 0;
3883                 pos += 2;
3884         }
3885 #endif
3886
3887         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3888         pos += sizeof(rfc1042_header);
3889         WPA_PUT_BE16(pos, ETH_P_PAE);
3890         pos += 2;
3891         memcpy(pos, data, data_len);
3892
3893         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3894         if (res < 0) {
3895                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3896                            "failed: %d (%s)",
3897                            (unsigned long) len, errno, strerror(errno));
3898         }
3899         os_free(hdr);
3900
3901         return res;
3902 }
3903
3904
3905 static u32 sta_flags_nl80211(int flags)
3906 {
3907         u32 f = 0;
3908
3909         if (flags & WPA_STA_AUTHORIZED)
3910                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3911         if (flags & WPA_STA_WMM)
3912                 f |= BIT(NL80211_STA_FLAG_WME);
3913         if (flags & WPA_STA_SHORT_PREAMBLE)
3914                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3915         if (flags & WPA_STA_MFP)
3916                 f |= BIT(NL80211_STA_FLAG_MFP);
3917
3918         return f;
3919 }
3920
3921
3922 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3923                                             int total_flags,
3924                                             int flags_or, int flags_and)
3925 {
3926         struct i802_bss *bss = priv;
3927         struct wpa_driver_nl80211_data *drv = bss->drv;
3928         struct nl_msg *msg, *flags = NULL;
3929         struct nl80211_sta_flag_update upd;
3930
3931         msg = nlmsg_alloc();
3932         if (!msg)
3933                 return -ENOMEM;
3934
3935         flags = nlmsg_alloc();
3936         if (!flags) {
3937                 nlmsg_free(msg);
3938                 return -ENOMEM;
3939         }
3940
3941         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3942                     0, NL80211_CMD_SET_STATION, 0);
3943
3944         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3945                     if_nametoindex(bss->ifname));
3946         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3947
3948         /*
3949          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3950          * can be removed eventually.
3951          */
3952         if (total_flags & WPA_STA_AUTHORIZED)
3953                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3954
3955         if (total_flags & WPA_STA_WMM)
3956                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3957
3958         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3959                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3960
3961         if (total_flags & WPA_STA_MFP)
3962                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3963
3964         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3965                 goto nla_put_failure;
3966
3967         os_memset(&upd, 0, sizeof(upd));
3968         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3969         upd.set = sta_flags_nl80211(flags_or);
3970         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3971
3972         nlmsg_free(flags);
3973
3974         return send_and_recv_msgs(drv, msg, NULL, NULL);
3975  nla_put_failure:
3976         nlmsg_free(flags);
3977         return -ENOBUFS;
3978 }
3979
3980
3981 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3982                                  struct wpa_driver_associate_params *params)
3983 {
3984         if (params->p2p)
3985                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3986                            "group (GO)");
3987         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3988             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3989                 nl80211_remove_monitor_interface(drv);
3990                 return -1;
3991         }
3992
3993         /* TODO: setup monitor interface (and add code somewhere to remove this
3994          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3995
3996         return 0;
3997 }
3998
3999
4000 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
4001 {
4002         struct nl_msg *msg;
4003         int ret = -1;
4004
4005         msg = nlmsg_alloc();
4006         if (!msg)
4007                 return -1;
4008
4009         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4010                     NL80211_CMD_LEAVE_IBSS, 0);
4011         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4012         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4013         msg = NULL;
4014         if (ret) {
4015                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4016                            "(%s)", ret, strerror(-ret));
4017                 goto nla_put_failure;
4018         }
4019
4020         ret = 0;
4021         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
4022
4023 nla_put_failure:
4024         nlmsg_free(msg);
4025         return ret;
4026 }
4027
4028
4029 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4030                                    struct wpa_driver_associate_params *params)
4031 {
4032         struct nl_msg *msg;
4033         int ret = -1;
4034         int count = 0;
4035
4036         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4037
4038         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
4039                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4040                            "IBSS mode");
4041                 return -1;
4042         }
4043
4044 retry:
4045         msg = nlmsg_alloc();
4046         if (!msg)
4047                 return -1;
4048
4049         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4050                     NL80211_CMD_JOIN_IBSS, 0);
4051         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4052
4053         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4054                 goto nla_put_failure;
4055
4056         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4057                           params->ssid, params->ssid_len);
4058         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4059                 params->ssid);
4060         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4061         drv->ssid_len = params->ssid_len;
4062
4063         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4064         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4065
4066         ret = nl80211_set_conn_keys(params, msg);
4067         if (ret)
4068                 goto nla_put_failure;
4069
4070         if (params->wpa_ie) {
4071                 wpa_hexdump(MSG_DEBUG,
4072                             "  * Extra IEs for Beacon/Probe Response frames",
4073                             params->wpa_ie, params->wpa_ie_len);
4074                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4075                         params->wpa_ie);
4076         }
4077
4078         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4079         msg = NULL;
4080         if (ret) {
4081                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4082                            ret, strerror(-ret));
4083                 count++;
4084                 if (ret == -EALREADY && count == 1) {
4085                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4086                                    "forced leave");
4087                         nl80211_leave_ibss(drv);
4088                         nlmsg_free(msg);
4089                         goto retry;
4090                 }
4091
4092                 goto nla_put_failure;
4093         }
4094         ret = 0;
4095         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
4096
4097 nla_put_failure:
4098         nlmsg_free(msg);
4099         return ret;
4100 }
4101
4102
4103 static int wpa_driver_nl80211_connect(
4104         struct wpa_driver_nl80211_data *drv,
4105         struct wpa_driver_associate_params *params)
4106 {
4107         struct nl_msg *msg;
4108         enum nl80211_auth_type type;
4109         int ret = 0;
4110
4111         msg = nlmsg_alloc();
4112         if (!msg)
4113                 return -1;
4114
4115         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4116         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4117                     NL80211_CMD_CONNECT, 0);
4118
4119         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4120         if (params->bssid) {
4121                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4122                            MAC2STR(params->bssid));
4123                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4124         }
4125         if (params->freq) {
4126                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4127                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4128         }
4129         if (params->ssid) {
4130                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4131                                   params->ssid, params->ssid_len);
4132                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4133                         params->ssid);
4134                 if (params->ssid_len > sizeof(drv->ssid))
4135                         goto nla_put_failure;
4136                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4137                 drv->ssid_len = params->ssid_len;
4138         }
4139         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4140         if (params->wpa_ie)
4141                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4142                         params->wpa_ie);
4143
4144         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4145                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4146         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4147                 type = NL80211_AUTHTYPE_SHARED_KEY;
4148         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4149                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4150         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4151                 type = NL80211_AUTHTYPE_FT;
4152         else
4153                 goto nla_put_failure;
4154
4155         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4156         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4157
4158         if (params->wpa_ie && params->wpa_ie_len) {
4159                 enum nl80211_wpa_versions ver;
4160
4161                 if (params->wpa_ie[0] == WLAN_EID_RSN)
4162                         ver = NL80211_WPA_VERSION_2;
4163                 else
4164                         ver = NL80211_WPA_VERSION_1;
4165
4166                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
4167                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4168         }
4169
4170         if (params->pairwise_suite != CIPHER_NONE) {
4171                 int cipher;
4172
4173                 switch (params->pairwise_suite) {
4174                 case CIPHER_WEP40:
4175                         cipher = WLAN_CIPHER_SUITE_WEP40;
4176                         break;
4177                 case CIPHER_WEP104:
4178                         cipher = WLAN_CIPHER_SUITE_WEP104;
4179                         break;
4180                 case CIPHER_CCMP:
4181                         cipher = WLAN_CIPHER_SUITE_CCMP;
4182                         break;
4183                 case CIPHER_TKIP:
4184                 default:
4185                         cipher = WLAN_CIPHER_SUITE_TKIP;
4186                         break;
4187                 }
4188                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4189         }
4190
4191         if (params->group_suite != CIPHER_NONE) {
4192                 int cipher;
4193
4194                 switch (params->group_suite) {
4195                 case CIPHER_WEP40:
4196                         cipher = WLAN_CIPHER_SUITE_WEP40;
4197                         break;
4198                 case CIPHER_WEP104:
4199                         cipher = WLAN_CIPHER_SUITE_WEP104;
4200                         break;
4201                 case CIPHER_CCMP:
4202                         cipher = WLAN_CIPHER_SUITE_CCMP;
4203                         break;
4204                 case CIPHER_TKIP:
4205                 default:
4206                         cipher = WLAN_CIPHER_SUITE_TKIP;
4207                         break;
4208                 }
4209                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4210         }
4211
4212         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4213             params->key_mgmt_suite == KEY_MGMT_PSK) {
4214                 int mgmt = WLAN_AKM_SUITE_PSK;
4215
4216                 switch (params->key_mgmt_suite) {
4217                 case KEY_MGMT_802_1X:
4218                         mgmt = WLAN_AKM_SUITE_8021X;
4219                         break;
4220                 case KEY_MGMT_PSK:
4221                 default:
4222                         mgmt = WLAN_AKM_SUITE_PSK;
4223                         break;
4224                 }
4225                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4226         }
4227
4228         ret = nl80211_set_conn_keys(params, msg);
4229         if (ret)
4230                 goto nla_put_failure;
4231
4232         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4233         msg = NULL;
4234         if (ret) {
4235                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4236                            "(%s)", ret, strerror(-ret));
4237                 goto nla_put_failure;
4238         }
4239         ret = 0;
4240         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4241
4242 nla_put_failure:
4243         nlmsg_free(msg);
4244         return ret;
4245
4246 }
4247
4248
4249 static int wpa_driver_nl80211_associate(
4250         void *priv, struct wpa_driver_associate_params *params)
4251 {
4252         struct i802_bss *bss = priv;
4253         struct wpa_driver_nl80211_data *drv = bss->drv;
4254         int ret = -1;
4255         struct nl_msg *msg;
4256
4257         if (params->mode == IEEE80211_MODE_AP)
4258                 return wpa_driver_nl80211_ap(drv, params);
4259
4260         if (params->mode == IEEE80211_MODE_IBSS)
4261                 return wpa_driver_nl80211_ibss(drv, params);
4262
4263         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4264                 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4265                         return -1;
4266                 return wpa_driver_nl80211_connect(drv, params);
4267         }
4268
4269         drv->associated = 0;
4270
4271         msg = nlmsg_alloc();
4272         if (!msg)
4273                 return -1;
4274
4275         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4276                    drv->ifindex);
4277         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4278                     NL80211_CMD_ASSOCIATE, 0);
4279
4280         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4281         if (params->bssid) {
4282                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4283                            MAC2STR(params->bssid));
4284                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4285         }
4286         if (params->freq) {
4287                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4288                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4289                 drv->assoc_freq = params->freq;
4290         } else
4291                 drv->assoc_freq = 0;
4292         if (params->ssid) {
4293                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4294                                   params->ssid, params->ssid_len);
4295                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4296                         params->ssid);
4297                 if (params->ssid_len > sizeof(drv->ssid))
4298                         goto nla_put_failure;
4299                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4300                 drv->ssid_len = params->ssid_len;
4301         }
4302         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4303         if (params->wpa_ie)
4304                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4305                         params->wpa_ie);
4306
4307 #ifdef CONFIG_IEEE80211W
4308         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4309                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4310 #endif /* CONFIG_IEEE80211W */
4311
4312         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4313
4314         if (params->prev_bssid) {
4315                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4316                            MAC2STR(params->prev_bssid));
4317                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4318                         params->prev_bssid);
4319         }
4320
4321         if (params->p2p)
4322                 wpa_printf(MSG_DEBUG, "  * P2P group");
4323
4324         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4325         msg = NULL;
4326         if (ret) {
4327                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4328                            "(%s)", ret, strerror(-ret));
4329                 nl80211_dump_scan(drv);
4330                 goto nla_put_failure;
4331         }
4332         ret = 0;
4333         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4334                    "successfully");
4335
4336 nla_put_failure:
4337         nlmsg_free(msg);
4338         return ret;
4339 }
4340
4341
4342 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4343                             int ifindex, int mode)
4344 {
4345         struct nl_msg *msg;
4346         int ret = -ENOBUFS;
4347
4348         msg = nlmsg_alloc();
4349         if (!msg)
4350                 return -ENOMEM;
4351
4352         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4353                     0, NL80211_CMD_SET_INTERFACE, 0);
4354         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4355         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4356
4357         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4358         if (!ret)
4359                 return 0;
4360 nla_put_failure:
4361         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4362                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4363         return ret;
4364 }
4365
4366
4367 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4368 {
4369         struct i802_bss *bss = priv;
4370         struct wpa_driver_nl80211_data *drv = bss->drv;
4371         int ret = -1;
4372         int nlmode;
4373         int i;
4374
4375         switch (mode) {
4376         case 0:
4377                 nlmode = NL80211_IFTYPE_STATION;
4378                 break;
4379         case 1:
4380                 nlmode = NL80211_IFTYPE_ADHOC;
4381                 break;
4382         case 2:
4383                 nlmode = NL80211_IFTYPE_AP;
4384                 break;
4385         default:
4386                 return -1;
4387         }
4388
4389         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4390                 drv->nlmode = nlmode;
4391                 ret = 0;
4392                 goto done;
4393         }
4394
4395         if (nlmode == drv->nlmode) {
4396                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4397                            "requested mode - ignore error");
4398                 ret = 0;
4399                 goto done; /* Already in the requested mode */
4400         }
4401
4402         /* mac80211 doesn't allow mode changes while the device is up, so
4403          * take the device down, try to set the mode again, and bring the
4404          * device back up.
4405          */
4406         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4407                    "interface down");
4408         for (i = 0; i < 10; i++) {
4409                 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4410                     0) {
4411                         /* Try to set the mode again while the interface is
4412                          * down */
4413                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4414                         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4415                                                   1))
4416                                 ret = -1;
4417                         if (!ret)
4418                                 break;
4419                 } else
4420                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4421                                    "interface down");
4422                 os_sleep(0, 100000);
4423         }
4424
4425         if (!ret) {
4426                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4427                            "interface is down");
4428                 drv->nlmode = nlmode;
4429         }
4430
4431 done:
4432         if (!ret && nlmode == NL80211_IFTYPE_AP) {
4433                 /* Setup additional AP mode functionality if needed */
4434                 if (drv->monitor_ifidx < 0 &&
4435                     nl80211_create_monitor_interface(drv))
4436                         return -1;
4437         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4438                 /* Remove additional AP mode functionality */
4439                 nl80211_remove_monitor_interface(drv);
4440                 bss->beacon_set = 0;
4441         }
4442
4443         if (ret)
4444                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4445                            "from %d failed", nlmode, drv->nlmode);
4446
4447         return ret;
4448 }
4449
4450
4451 static int wpa_driver_nl80211_get_capa(void *priv,
4452                                        struct wpa_driver_capa *capa)
4453 {
4454         struct i802_bss *bss = priv;
4455         struct wpa_driver_nl80211_data *drv = bss->drv;
4456         if (!drv->has_capability)
4457                 return -1;
4458         os_memcpy(capa, &drv->capa, sizeof(*capa));
4459         return 0;
4460 }
4461
4462
4463 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4464 {
4465         struct i802_bss *bss = priv;
4466         struct wpa_driver_nl80211_data *drv = bss->drv;
4467
4468         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4469                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4470         drv->operstate = state;
4471         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4472                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4473 }
4474
4475
4476 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4477 {
4478         struct i802_bss *bss = priv;
4479         struct wpa_driver_nl80211_data *drv = bss->drv;
4480         struct nl_msg *msg;
4481         struct nl80211_sta_flag_update upd;
4482
4483         msg = nlmsg_alloc();
4484         if (!msg)
4485                 return -ENOMEM;
4486
4487         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4488                     0, NL80211_CMD_SET_STATION, 0);
4489
4490         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4491                     if_nametoindex(bss->ifname));
4492         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4493
4494         os_memset(&upd, 0, sizeof(upd));
4495         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4496         if (authorized)
4497                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4498         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4499
4500         return send_and_recv_msgs(drv, msg, NULL, NULL);
4501  nla_put_failure:
4502         return -ENOBUFS;
4503 }
4504
4505
4506 #ifdef HOSTAPD
4507
4508 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4509 {
4510         int i;
4511         int *old;
4512
4513         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4514                    ifidx);
4515         for (i = 0; i < drv->num_if_indices; i++) {
4516                 if (drv->if_indices[i] == 0) {
4517                         drv->if_indices[i] = ifidx;
4518                         return;
4519                 }
4520         }
4521
4522         if (drv->if_indices != drv->default_if_indices)
4523                 old = drv->if_indices;
4524         else
4525                 old = NULL;
4526
4527         drv->if_indices = os_realloc(old,
4528                                      sizeof(int) * (drv->num_if_indices + 1));
4529         if (!drv->if_indices) {
4530                 if (!old)
4531                         drv->if_indices = drv->default_if_indices;
4532                 else
4533                         drv->if_indices = old;
4534                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4535                            "interfaces");
4536                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4537                 return;
4538         } else if (!old)
4539                 os_memcpy(drv->if_indices, drv->default_if_indices,
4540                           sizeof(drv->default_if_indices));
4541         drv->if_indices[drv->num_if_indices] = ifidx;
4542         drv->num_if_indices++;
4543 }
4544
4545
4546 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4547 {
4548         int i;
4549
4550         for (i = 0; i < drv->num_if_indices; i++) {
4551                 if (drv->if_indices[i] == ifidx) {
4552                         drv->if_indices[i] = 0;
4553                         break;
4554                 }
4555         }
4556 }
4557
4558
4559 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4560 {
4561         int i;
4562
4563         for (i = 0; i < drv->num_if_indices; i++)
4564                 if (drv->if_indices[i] == ifidx)
4565                         return 1;
4566
4567         return 0;
4568 }
4569
4570
4571 static inline int min_int(int a, int b)
4572 {
4573         if (a < b)
4574                 return a;
4575         return b;
4576 }
4577
4578
4579 static int get_key_handler(struct nl_msg *msg, void *arg)
4580 {
4581         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4582         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4583
4584         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4585                   genlmsg_attrlen(gnlh, 0), NULL);
4586
4587         /*
4588          * TODO: validate the key index and mac address!
4589          * Otherwise, there's a race condition as soon as
4590          * the kernel starts sending key notifications.
4591          */
4592
4593         if (tb[NL80211_ATTR_KEY_SEQ])
4594                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4595                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4596         return NL_SKIP;
4597 }
4598
4599
4600 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4601                            int idx, u8 *seq)
4602 {
4603         struct i802_bss *bss = priv;
4604         struct wpa_driver_nl80211_data *drv = bss->drv;
4605         struct nl_msg *msg;
4606
4607         msg = nlmsg_alloc();
4608         if (!msg)
4609                 return -ENOMEM;
4610
4611         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4612                     0, NL80211_CMD_GET_KEY, 0);
4613
4614         if (addr)
4615                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4616         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4617         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4618
4619         memset(seq, 0, 6);
4620
4621         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4622  nla_put_failure:
4623         return -ENOBUFS;
4624 }
4625
4626
4627 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4628                               int mode)
4629 {
4630         struct i802_bss *bss = priv;
4631         struct wpa_driver_nl80211_data *drv = bss->drv;
4632         struct nl_msg *msg;
4633         u8 rates[NL80211_MAX_SUPP_RATES];
4634         u8 rates_len = 0;
4635         int i;
4636
4637         msg = nlmsg_alloc();
4638         if (!msg)
4639                 return -ENOMEM;
4640
4641         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4642                     NL80211_CMD_SET_BSS, 0);
4643
4644         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4645                 rates[rates_len++] = basic_rates[i] / 5;
4646
4647         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4648
4649         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4650
4651         return send_and_recv_msgs(drv, msg, NULL, NULL);
4652  nla_put_failure:
4653         return -ENOBUFS;
4654 }
4655
4656 #endif /* HOSTAPD */
4657
4658
4659 /* Set kernel driver on given frequency (MHz) */
4660 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4661 {
4662         struct i802_bss *bss = priv;
4663         struct wpa_driver_nl80211_data *drv = bss->drv;
4664         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4665                                            freq->sec_channel_offset);
4666 }
4667
4668
4669 #ifdef HOSTAPD
4670
4671 static int i802_set_rts(void *priv, int rts)
4672 {
4673         struct i802_bss *bss = priv;
4674         struct wpa_driver_nl80211_data *drv = bss->drv;
4675         struct nl_msg *msg;
4676         int ret = -ENOBUFS;
4677         u32 val;
4678
4679         msg = nlmsg_alloc();
4680         if (!msg)
4681                 return -ENOMEM;
4682
4683         if (rts >= 2347)
4684                 val = (u32) -1;
4685         else
4686                 val = rts;
4687
4688         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4689                     0, NL80211_CMD_SET_WIPHY, 0);
4690         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4691         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4692
4693         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4694         if (!ret)
4695                 return 0;
4696 nla_put_failure:
4697         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4698                    "%d (%s)", rts, ret, strerror(-ret));
4699         return ret;
4700 }
4701
4702
4703 static int i802_set_frag(void *priv, int frag)
4704 {
4705         struct i802_bss *bss = priv;
4706         struct wpa_driver_nl80211_data *drv = bss->drv;
4707         struct nl_msg *msg;
4708         int ret = -ENOBUFS;
4709         u32 val;
4710
4711         msg = nlmsg_alloc();
4712         if (!msg)
4713                 return -ENOMEM;
4714
4715         if (frag >= 2346)
4716                 val = (u32) -1;
4717         else
4718                 val = frag;
4719
4720         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4721                     0, NL80211_CMD_SET_WIPHY, 0);
4722         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4723         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4724
4725         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4726         if (!ret)
4727                 return 0;
4728 nla_put_failure:
4729         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4730                    "%d: %d (%s)", frag, ret, strerror(-ret));
4731         return ret;
4732 }
4733
4734
4735 static int i802_flush(void *priv)
4736 {
4737         struct i802_bss *bss = priv;
4738         struct wpa_driver_nl80211_data *drv = bss->drv;
4739         struct nl_msg *msg;
4740
4741         msg = nlmsg_alloc();
4742         if (!msg)
4743                 return -1;
4744
4745         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4746                     0, NL80211_CMD_DEL_STATION, 0);
4747
4748         /*
4749          * XXX: FIX! this needs to flush all VLANs too
4750          */
4751         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4752                     if_nametoindex(bss->ifname));
4753
4754         return send_and_recv_msgs(drv, msg, NULL, NULL);
4755  nla_put_failure:
4756         return -ENOBUFS;
4757 }
4758
4759
4760 static int get_sta_handler(struct nl_msg *msg, void *arg)
4761 {
4762         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4763         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4764         struct hostap_sta_driver_data *data = arg;
4765         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4766         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4767                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4768                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4769                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4770                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4771                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4772         };
4773
4774         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4775                   genlmsg_attrlen(gnlh, 0), NULL);
4776
4777         /*
4778          * TODO: validate the interface and mac address!
4779          * Otherwise, there's a race condition as soon as
4780          * the kernel starts sending station notifications.
4781          */
4782
4783         if (!tb[NL80211_ATTR_STA_INFO]) {
4784                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4785                 return NL_SKIP;
4786         }
4787         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4788                              tb[NL80211_ATTR_STA_INFO],
4789                              stats_policy)) {
4790                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4791                 return NL_SKIP;
4792         }
4793
4794         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4795                 data->inactive_msec =
4796                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4797         if (stats[NL80211_STA_INFO_RX_BYTES])
4798                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4799         if (stats[NL80211_STA_INFO_TX_BYTES])
4800                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4801         if (stats[NL80211_STA_INFO_RX_PACKETS])
4802                 data->rx_packets =
4803                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4804         if (stats[NL80211_STA_INFO_TX_PACKETS])
4805                 data->tx_packets =
4806                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4807
4808         return NL_SKIP;
4809 }
4810
4811 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4812                               const u8 *addr)
4813 {
4814         struct i802_bss *bss = priv;
4815         struct wpa_driver_nl80211_data *drv = bss->drv;
4816         struct nl_msg *msg;
4817
4818         os_memset(data, 0, sizeof(*data));
4819         msg = nlmsg_alloc();
4820         if (!msg)
4821                 return -ENOMEM;
4822
4823         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4824                     0, NL80211_CMD_GET_STATION, 0);
4825
4826         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4827         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4828
4829         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4830  nla_put_failure:
4831         return -ENOBUFS;
4832 }
4833
4834
4835 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4836                                     int cw_min, int cw_max, int burst_time)
4837 {
4838         struct i802_bss *bss = priv;
4839         struct wpa_driver_nl80211_data *drv = bss->drv;
4840         struct nl_msg *msg;
4841         struct nlattr *txq, *params;
4842
4843         msg = nlmsg_alloc();
4844         if (!msg)
4845                 return -1;
4846
4847         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4848                     0, NL80211_CMD_SET_WIPHY, 0);
4849
4850         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4851
4852         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4853         if (!txq)
4854                 goto nla_put_failure;
4855
4856         /* We are only sending parameters for a single TXQ at a time */
4857         params = nla_nest_start(msg, 1);
4858         if (!params)
4859                 goto nla_put_failure;
4860
4861         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4862         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4863          * 32 usec, so need to convert the value here. */
4864         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4865         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4866         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4867         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4868
4869         nla_nest_end(msg, params);
4870
4871         nla_nest_end(msg, txq);
4872
4873         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4874                 return 0;
4875  nla_put_failure:
4876         return -1;
4877 }
4878
4879
4880 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4881 {
4882         struct i802_bss *bss = priv;
4883         struct wpa_driver_nl80211_data *drv = bss->drv;
4884         struct nl_msg *msg;
4885
4886         msg = nlmsg_alloc();
4887         if (!msg)
4888                 return -ENOMEM;
4889
4890         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4891                     NL80211_CMD_SET_BSS, 0);
4892
4893         if (cts >= 0)
4894                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4895         if (preamble >= 0)
4896                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4897         if (slot >= 0)
4898                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4899
4900         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4901
4902         return send_and_recv_msgs(drv, msg, NULL, NULL);
4903  nla_put_failure:
4904         return -ENOBUFS;
4905 }
4906
4907
4908 static int i802_set_cts_protect(void *priv, int value)
4909 {
4910         return i802_set_bss(priv, value, -1, -1);
4911 }
4912
4913
4914 static int i802_set_preamble(void *priv, int value)
4915 {
4916         return i802_set_bss(priv, -1, value, -1);
4917 }
4918
4919
4920 static int i802_set_short_slot_time(void *priv, int value)
4921 {
4922         return i802_set_bss(priv, -1, -1, value);
4923 }
4924
4925
4926 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4927                              const char *ifname, int vlan_id)
4928 {
4929         struct i802_bss *bss = priv;
4930         struct wpa_driver_nl80211_data *drv = bss->drv;
4931         struct nl_msg *msg;
4932         int ret = -ENOBUFS;
4933
4934         msg = nlmsg_alloc();
4935         if (!msg)
4936                 return -ENOMEM;
4937
4938         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4939                     0, NL80211_CMD_SET_STATION, 0);
4940
4941         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4942                     if_nametoindex(bss->ifname));
4943         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4944         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4945                     if_nametoindex(ifname));
4946
4947         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4948         if (ret < 0) {
4949                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4950                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4951                            MAC2STR(addr), ifname, vlan_id, ret,
4952                            strerror(-ret));
4953         }
4954  nla_put_failure:
4955         return ret;
4956 }
4957
4958
4959 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4960 {
4961         struct i802_bss *bss = priv;
4962         struct wpa_driver_nl80211_data *drv = bss->drv;
4963         char name[IFNAMSIZ + 1];
4964
4965         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4966         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4967                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4968         if (val) {
4969                 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4970                                          NULL, 1) < 0)
4971                         return -1;
4972                 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4973                 return i802_set_sta_vlan(priv, addr, name, 0);
4974         } else {
4975                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4976                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4977                                                     name);
4978         }
4979 }
4980
4981
4982 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4983 {
4984         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4985         struct sockaddr_ll lladdr;
4986         unsigned char buf[3000];
4987         int len;
4988         socklen_t fromlen = sizeof(lladdr);
4989
4990         len = recvfrom(sock, buf, sizeof(buf), 0,
4991                        (struct sockaddr *)&lladdr, &fromlen);
4992         if (len < 0) {
4993                 perror("recv");
4994                 return;
4995         }
4996
4997         if (have_ifidx(drv, lladdr.sll_ifindex))
4998                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4999 }
5000
5001
5002 static int i802_get_inact_sec(void *priv, const u8 *addr)
5003 {
5004         struct hostap_sta_driver_data data;
5005         int ret;
5006
5007         data.inactive_msec = (unsigned long) -1;
5008         ret = i802_read_sta_data(priv, &data, addr);
5009         if (ret || data.inactive_msec == (unsigned long) -1)
5010                 return -1;
5011         return data.inactive_msec / 1000;
5012 }
5013
5014
5015 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5016 {
5017 #if 0
5018         /* TODO */
5019 #endif
5020         return 0;
5021 }
5022
5023
5024 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5025                            int reason)
5026 {
5027         struct i802_bss *bss = priv;
5028         struct ieee80211_mgmt mgmt;
5029
5030         memset(&mgmt, 0, sizeof(mgmt));
5031         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5032                                           WLAN_FC_STYPE_DEAUTH);
5033         memcpy(mgmt.da, addr, ETH_ALEN);
5034         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5035         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5036         mgmt.u.deauth.reason_code = host_to_le16(reason);
5037         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5038                                             IEEE80211_HDRLEN +
5039                                             sizeof(mgmt.u.deauth));
5040 }
5041
5042
5043 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5044                              int reason)
5045 {
5046         struct i802_bss *bss = priv;
5047         struct ieee80211_mgmt mgmt;
5048
5049         memset(&mgmt, 0, sizeof(mgmt));
5050         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5051                                           WLAN_FC_STYPE_DISASSOC);
5052         memcpy(mgmt.da, addr, ETH_ALEN);
5053         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5054         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5055         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5056         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5057                                             IEEE80211_HDRLEN +
5058                                             sizeof(mgmt.u.disassoc));
5059 }
5060
5061
5062 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5063                              const char *brname, const char *ifname)
5064 {
5065         int ifindex;
5066         char in_br[IFNAMSIZ];
5067
5068         os_strlcpy(drv->brname, brname, IFNAMSIZ);
5069         ifindex = if_nametoindex(brname);
5070         if (ifindex == 0) {
5071                 /*
5072                  * Bridge was configured, but the bridge device does
5073                  * not exist. Try to add it now.
5074                  */
5075                 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
5076                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5077                                    "bridge interface %s: %s",
5078                                    brname, strerror(errno));
5079                         return -1;
5080                 }
5081                 drv->added_bridge = 1;
5082                 add_ifidx(drv, if_nametoindex(brname));
5083         }
5084
5085         if (linux_br_get(in_br, ifname) == 0) {
5086                 if (os_strcmp(in_br, brname) == 0)
5087                         return 0; /* already in the bridge */
5088
5089                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5090                            "bridge %s", ifname, in_br);
5091                 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
5092                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5093                                    "remove interface %s from bridge "
5094                                    "%s: %s",
5095                                    ifname, brname, strerror(errno));
5096                         return -1;
5097                 }
5098         }
5099
5100         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5101                    ifname, brname);
5102         if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
5103                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5104                            "into bridge %s: %s",
5105                            ifname, brname, strerror(errno));
5106                 return -1;
5107         }
5108         drv->added_if_into_bridge = 1;
5109
5110         return 0;
5111 }
5112
5113
5114 static void *i802_init(struct hostapd_data *hapd,
5115                        struct wpa_init_params *params)
5116 {
5117         struct wpa_driver_nl80211_data *drv;
5118         struct i802_bss *bss;
5119         size_t i;
5120         char brname[IFNAMSIZ];
5121         int ifindex, br_ifindex;
5122         int br_added = 0;
5123
5124         bss = wpa_driver_nl80211_init(hapd, params->ifname);
5125         if (bss == NULL)
5126                 return NULL;
5127
5128         drv = bss->drv;
5129         if (linux_br_get(brname, params->ifname) == 0) {
5130                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5131                            params->ifname, brname);
5132                 br_ifindex = if_nametoindex(brname);
5133         } else {
5134                 brname[0] = '\0';
5135                 br_ifindex = 0;
5136         }
5137
5138         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
5139         drv->if_indices = drv->default_if_indices;
5140         for (i = 0; i < params->num_bridge; i++) {
5141                 if (params->bridge[i]) {
5142                         ifindex = if_nametoindex(params->bridge[i]);
5143                         if (ifindex)
5144                                 add_ifidx(drv, ifindex);
5145                         if (ifindex == br_ifindex)
5146                                 br_added = 1;
5147                 }
5148         }
5149         if (!br_added && br_ifindex &&
5150             (params->num_bridge == 0 || !params->bridge[0]))
5151                 add_ifidx(drv, br_ifindex);
5152
5153         /* start listening for EAPOL on the default AP interface */
5154         add_ifidx(drv, drv->ifindex);
5155
5156         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5157                 goto failed;
5158
5159         if (params->bssid) {
5160                 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5161                                        params->bssid))
5162                         goto failed;
5163         }
5164
5165         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5166                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5167                            "into AP mode", bss->ifname);
5168                 goto failed;
5169         }
5170
5171         if (params->num_bridge && params->bridge[0] &&
5172             i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5173                 goto failed;
5174
5175         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5176                 goto failed;
5177
5178         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5179         if (drv->eapol_sock < 0) {
5180                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5181                 goto failed;
5182         }
5183
5184         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5185         {
5186                 printf("Could not register read socket for eapol\n");
5187                 goto failed;
5188         }
5189
5190         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5191                 goto failed;
5192
5193         return bss;
5194
5195 failed:
5196         nl80211_remove_monitor_interface(drv);
5197         if (drv->ioctl_sock >= 0)
5198                 close(drv->ioctl_sock);
5199
5200         genl_family_put(drv->nl80211);
5201         nl_cache_free(drv->nl_cache);
5202         nl80211_handle_destroy(drv->nl_handle);
5203         nl_cb_put(drv->nl_cb);
5204
5205         os_free(drv);
5206         return NULL;
5207 }
5208
5209
5210 static void i802_deinit(void *priv)
5211 {
5212         wpa_driver_nl80211_deinit(priv);
5213 }
5214
5215 #endif /* HOSTAPD */
5216
5217
5218 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5219         enum wpa_driver_if_type type)
5220 {
5221         switch (type) {
5222         case WPA_IF_STATION:
5223         case WPA_IF_P2P_CLIENT:
5224         case WPA_IF_P2P_GROUP:
5225                 return NL80211_IFTYPE_STATION;
5226         case WPA_IF_AP_VLAN:
5227                 return NL80211_IFTYPE_AP_VLAN;
5228         case WPA_IF_AP_BSS:
5229         case WPA_IF_P2P_GO:
5230                 return NL80211_IFTYPE_AP;
5231         }
5232         return -1;
5233 }
5234
5235
5236 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5237                                      const char *ifname, const u8 *addr,
5238                                      void *bss_ctx, void **drv_priv,
5239                                      char *force_ifname, u8 *if_addr)
5240 {
5241         struct i802_bss *bss = priv;
5242         struct wpa_driver_nl80211_data *drv = bss->drv;
5243         int ifidx;
5244 #ifdef HOSTAPD
5245         struct i802_bss *new_bss = NULL;
5246
5247         if (type == WPA_IF_AP_BSS) {
5248                 new_bss = os_zalloc(sizeof(*new_bss));
5249                 if (new_bss == NULL)
5250                         return -1;
5251         }
5252 #endif /* HOSTAPD */
5253
5254         if (addr)
5255                 os_memcpy(if_addr, addr, ETH_ALEN);
5256         ifidx = nl80211_create_iface(drv, ifname,
5257                                      wpa_driver_nl80211_if_type(type), addr,
5258                                      0);
5259         if (ifidx < 0) {
5260 #ifdef HOSTAPD
5261                 os_free(new_bss);
5262 #endif /* HOSTAPD */
5263                 return -1;
5264         }
5265
5266         if (!addr &&
5267             linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5268                 return -1;
5269
5270 #ifdef HOSTAPD
5271         if (type == WPA_IF_AP_BSS) {
5272                 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5273                         nl80211_remove_iface(drv, ifidx);
5274                         os_free(new_bss);
5275                         return -1;
5276                 }
5277                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5278                 new_bss->ifindex = ifidx;
5279                 new_bss->drv = drv;
5280                 new_bss->next = drv->first_bss.next;
5281                 drv->first_bss.next = new_bss;
5282                 if (drv_priv)
5283                         *drv_priv = new_bss;
5284         }
5285 #endif /* HOSTAPD */
5286
5287         return 0;
5288 }
5289
5290
5291 static int wpa_driver_nl80211_if_remove(void *priv,
5292                                         enum wpa_driver_if_type type,
5293                                         const char *ifname)
5294 {
5295         struct i802_bss *bss = priv;
5296         struct wpa_driver_nl80211_data *drv = bss->drv;
5297         int ifindex = if_nametoindex(ifname);
5298
5299         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5300                    __func__, type, ifname, ifindex);
5301         if (ifindex <= 0)
5302                 return -1;
5303         nl80211_remove_iface(drv, ifindex);
5304
5305 #ifdef HOSTAPD
5306         if (type != WPA_IF_AP_BSS)
5307                 return 0;
5308
5309         if (bss != &drv->first_bss) {
5310                 struct i802_bss *tbss = &drv->first_bss;
5311
5312                 while (tbss) {
5313                         if (tbss->next != bss)
5314                                 continue;
5315
5316                         tbss->next = bss->next;
5317                         os_free(bss);
5318                         break;
5319                 }
5320         }
5321 #endif /* HOSTAPD */
5322
5323         return 0;
5324 }
5325
5326
5327 static int cookie_handler(struct nl_msg *msg, void *arg)
5328 {
5329         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5330         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5331         u64 *cookie = arg;
5332         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5333                   genlmsg_attrlen(gnlh, 0), NULL);
5334         if (tb[NL80211_ATTR_COOKIE])
5335                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5336         return NL_SKIP;
5337 }
5338
5339
5340 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5341                                   unsigned int freq, const u8 *buf,
5342                                   size_t buf_len, u64 *cookie_out)
5343 {
5344         struct nl_msg *msg;
5345         u64 cookie;
5346         int ret = -1;
5347
5348         msg = nlmsg_alloc();
5349         if (!msg)
5350                 return -1;
5351
5352         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5353                     NL80211_CMD_FRAME, 0);
5354
5355         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5356         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5357         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5358
5359         cookie = 0;
5360         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5361         msg = NULL;
5362         if (ret) {
5363                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5364                            "(%s)", ret, strerror(-ret));
5365                 goto nla_put_failure;
5366         }
5367         wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5368                    "cookie 0x%llx", (long long unsigned int) cookie);
5369
5370         if (cookie_out)
5371                 *cookie_out = cookie;
5372
5373 nla_put_failure:
5374         nlmsg_free(msg);
5375         return ret;
5376 }
5377
5378
5379 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5380                                           const u8 *dst, const u8 *src,
5381                                           const u8 *bssid,
5382                                           const u8 *data, size_t data_len)
5383 {
5384         struct i802_bss *bss = priv;
5385         struct wpa_driver_nl80211_data *drv = bss->drv;
5386         int ret = -1;
5387         u8 *buf;
5388         struct ieee80211_hdr *hdr;
5389
5390         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5391                    drv->ifindex);
5392
5393         buf = os_zalloc(24 + data_len);
5394         if (buf == NULL)
5395                 return ret;
5396         os_memcpy(buf + 24, data, data_len);
5397         hdr = (struct ieee80211_hdr *) buf;
5398         hdr->frame_control =
5399                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5400         os_memcpy(hdr->addr1, dst, ETH_ALEN);
5401         os_memcpy(hdr->addr2, src, ETH_ALEN);
5402         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5403
5404         if (drv->nlmode == NL80211_IFTYPE_AP)
5405                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5406         else
5407                 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5408                                              &drv->send_action_cookie);
5409
5410         os_free(buf);
5411         return ret;
5412 }
5413
5414
5415 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5416                                                 unsigned int duration)
5417 {
5418         struct i802_bss *bss = priv;
5419         struct wpa_driver_nl80211_data *drv = bss->drv;
5420         struct nl_msg *msg;
5421         int ret;
5422         u64 cookie;
5423
5424         msg = nlmsg_alloc();
5425         if (!msg)
5426                 return -1;
5427
5428         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5429                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5430
5431         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5432         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5433         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5434
5435         cookie = 0;
5436         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5437         if (ret == 0) {
5438                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5439                            "0x%llx for freq=%u MHz duration=%u",
5440                            (long long unsigned int) cookie, freq, duration);
5441                 drv->remain_on_chan_cookie = cookie;
5442                 return 0;
5443         }
5444         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5445                    "(freq=%d duration=%u): %d (%s)",
5446                    freq, duration, ret, strerror(-ret));
5447 nla_put_failure:
5448         return -1;
5449 }
5450
5451
5452 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5453 {
5454         struct i802_bss *bss = priv;
5455         struct wpa_driver_nl80211_data *drv = bss->drv;
5456         struct nl_msg *msg;
5457         int ret;
5458
5459         if (!drv->pending_remain_on_chan) {
5460                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5461                            "to cancel");
5462                 return -1;
5463         }
5464
5465         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5466                    "0x%llx",
5467                    (long long unsigned int) drv->remain_on_chan_cookie);
5468
5469         msg = nlmsg_alloc();
5470         if (!msg)
5471                 return -1;
5472
5473         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5474                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5475
5476         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5477         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5478
5479         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5480         if (ret == 0)
5481                 return 0;
5482         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5483                    "%d (%s)", ret, strerror(-ret));
5484 nla_put_failure:
5485         return -1;
5486 }
5487
5488
5489 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5490 {
5491         struct i802_bss *bss = priv;
5492         struct wpa_driver_nl80211_data *drv = bss->drv;
5493
5494         if (drv->nlmode != NL80211_IFTYPE_STATION) {
5495                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5496                            "allowed in station mode (iftype=%d)",
5497                            drv->nlmode);
5498                 return -1;
5499         }
5500
5501         if (!report) {
5502                 if (drv->nl_handle_preq) {
5503                         eloop_unregister_read_sock(
5504                                 nl_socket_get_fd(drv->nl_handle_preq));
5505                         nl_cache_free(drv->nl_cache_preq);
5506                         nl80211_handle_destroy(drv->nl_handle_preq);
5507                         drv->nl_handle_preq = NULL;
5508                 }
5509                 return 0;
5510         }
5511
5512         if (drv->nl_handle_preq) {
5513                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
5514                            "already on!");
5515                 return 0;
5516         }
5517
5518         drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb);
5519         if (drv->nl_handle_preq == NULL) {
5520                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate "
5521                            "netlink callbacks (preq)");
5522                 goto out_err1;
5523         }
5524
5525         if (genl_connect(drv->nl_handle_preq)) {
5526                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to "
5527                            "generic netlink (preq)");
5528                 goto out_err2;
5529                 return -1;
5530         }
5531
5532 #ifdef CONFIG_LIBNL20
5533         if (genl_ctrl_alloc_cache(drv->nl_handle_preq,
5534                                   &drv->nl_cache_preq) < 0) {
5535                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5536                            "netlink cache (preq)");
5537                 goto out_err2;
5538         }
5539 #else /* CONFIG_LIBNL20 */
5540         drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq);
5541         if (drv->nl_cache_preq == NULL) {
5542                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5543                            "netlink cache (preq)");
5544                 goto out_err2;
5545         }
5546 #endif /* CONFIG_LIBNL20 */
5547
5548         if (nl80211_register_frame(drv, drv->nl_handle_preq,
5549                                    (WLAN_FC_TYPE_MGMT << 2) |
5550                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
5551                                    NULL, 0) < 0) {
5552                 goto out_err3;
5553         }
5554
5555         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq),
5556                                  wpa_driver_nl80211_event_receive, drv,
5557                                  drv->nl_handle_preq);
5558
5559         return 0;
5560
5561  out_err3:
5562         nl_cache_free(drv->nl_cache_preq);
5563  out_err2:
5564         nl80211_handle_destroy(drv->nl_handle_preq);
5565         drv->nl_handle_preq = NULL;
5566  out_err1:
5567         return -1;
5568 }
5569
5570
5571 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5572                                      int ifindex, int disabled)
5573 {
5574         struct nl_msg *msg;
5575         struct nlattr *bands, *band;
5576         int ret;
5577
5578         msg = nlmsg_alloc();
5579         if (!msg)
5580                 return -1;
5581
5582         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5583                     NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5584         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5585
5586         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5587         if (!bands)
5588                 goto nla_put_failure;
5589
5590         /*
5591          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5592          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5593          * rates. All 5 GHz rates are left enabled.
5594          */
5595         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5596         if (!band)
5597                 goto nla_put_failure;
5598         NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5599                 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5600         nla_nest_end(msg, band);
5601
5602         nla_nest_end(msg, bands);
5603
5604         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5605         msg = NULL;
5606         if (ret) {
5607                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5608                            "(%s)", ret, strerror(-ret));
5609         }
5610
5611         return ret;
5612
5613 nla_put_failure:
5614         nlmsg_free(msg);
5615         return -1;
5616 }
5617
5618
5619 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5620 {
5621         struct i802_bss *bss = priv;
5622         struct wpa_driver_nl80211_data *drv = bss->drv;
5623         drv->disable_11b_rates = disabled;
5624         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5625 }
5626
5627
5628 static int wpa_driver_nl80211_deinit_ap(void *priv)
5629 {
5630         struct i802_bss *bss = priv;
5631         struct wpa_driver_nl80211_data *drv = bss->drv;
5632         if (drv->nlmode != NL80211_IFTYPE_AP)
5633                 return -1;
5634         wpa_driver_nl80211_del_beacon(drv);
5635         return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5636 }
5637
5638
5639 static void wpa_driver_nl80211_resume(void *priv)
5640 {
5641         struct i802_bss *bss = priv;
5642         struct wpa_driver_nl80211_data *drv = bss->drv;
5643         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5644                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5645                            "resume event");
5646         }
5647 }
5648
5649
5650 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5651                                   const u8 *ies, size_t ies_len)
5652 {
5653         struct i802_bss *bss = priv;
5654         struct wpa_driver_nl80211_data *drv = bss->drv;
5655         int ret;
5656         u8 *data, *pos;
5657         size_t data_len;
5658         u8 own_addr[ETH_ALEN];
5659
5660         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5661                 return -1;
5662
5663         if (action != 1) {
5664                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5665                            "action %d", action);
5666                 return -1;
5667         }
5668
5669         /*
5670          * Action frame payload:
5671          * Category[1] = 6 (Fast BSS Transition)
5672          * Action[1] = 1 (Fast BSS Transition Request)
5673          * STA Address
5674          * Target AP Address
5675          * FT IEs
5676          */
5677
5678         data_len = 2 + 2 * ETH_ALEN + ies_len;
5679         data = os_malloc(data_len);
5680         if (data == NULL)
5681                 return -1;
5682         pos = data;
5683         *pos++ = 0x06; /* FT Action category */
5684         *pos++ = action;
5685         os_memcpy(pos, own_addr, ETH_ALEN);
5686         pos += ETH_ALEN;
5687         os_memcpy(pos, target_ap, ETH_ALEN);
5688         pos += ETH_ALEN;
5689         os_memcpy(pos, ies, ies_len);
5690
5691         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5692                                              own_addr, drv->bssid,
5693                                              data, data_len);
5694         os_free(data);
5695
5696         return ret;
5697 }
5698
5699
5700 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5701 {
5702         struct i802_bss *bss = priv;
5703         struct wpa_driver_nl80211_data *drv = bss->drv;
5704         struct nl_msg *msg, *cqm = NULL;
5705
5706         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5707                    "hysteresis=%d", threshold, hysteresis);
5708
5709         msg = nlmsg_alloc();
5710         if (!msg)
5711                 return -1;
5712
5713         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5714                     0, NL80211_CMD_SET_CQM, 0);
5715
5716         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5717
5718         cqm = nlmsg_alloc();
5719         if (cqm == NULL)
5720                 return -1;
5721
5722         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5723         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5724         nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5725
5726         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5727                 return 0;
5728         msg = NULL;
5729
5730 nla_put_failure:
5731         if (cqm)
5732                 nlmsg_free(cqm);
5733         nlmsg_free(msg);
5734         return -1;
5735 }
5736
5737
5738 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5739                               int encrypt)
5740 {
5741         struct i802_bss *bss = priv;
5742         struct wpa_driver_nl80211_data *drv = bss->drv;
5743         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5744 }
5745
5746
5747 static int nl80211_set_intra_bss(void *priv, int enabled)
5748 {
5749         struct i802_bss *bss = priv;
5750         struct wpa_driver_nl80211_data *drv = bss->drv;
5751         struct nl_msg *msg;
5752
5753         msg = nlmsg_alloc();
5754         if (!msg)
5755                 return -ENOMEM;
5756
5757         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5758                     NL80211_CMD_SET_BSS, 0);
5759
5760         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5761         NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5762
5763         return send_and_recv_msgs(drv, msg, NULL, NULL);
5764  nla_put_failure:
5765         return -ENOBUFS;
5766 }
5767
5768
5769 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5770         .name = "nl80211",
5771         .desc = "Linux nl80211/cfg80211",
5772         .get_bssid = wpa_driver_nl80211_get_bssid,
5773         .get_ssid = wpa_driver_nl80211_get_ssid,
5774         .set_key = wpa_driver_nl80211_set_key,
5775         .scan2 = wpa_driver_nl80211_scan,
5776         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5777         .deauthenticate = wpa_driver_nl80211_deauthenticate,
5778         .disassociate = wpa_driver_nl80211_disassociate,
5779         .authenticate = wpa_driver_nl80211_authenticate,
5780         .associate = wpa_driver_nl80211_associate,
5781         .init = wpa_driver_nl80211_init,
5782         .deinit = wpa_driver_nl80211_deinit,
5783         .get_capa = wpa_driver_nl80211_get_capa,
5784         .set_operstate = wpa_driver_nl80211_set_operstate,
5785         .set_supp_port = wpa_driver_nl80211_set_supp_port,
5786         .set_country = wpa_driver_nl80211_set_country,
5787         .set_beacon = wpa_driver_nl80211_set_beacon,
5788         .if_add = wpa_driver_nl80211_if_add,
5789         .if_remove = wpa_driver_nl80211_if_remove,
5790         .send_mlme = wpa_driver_nl80211_send_mlme,
5791         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5792         .sta_add = wpa_driver_nl80211_sta_add,
5793         .sta_remove = wpa_driver_nl80211_sta_remove,
5794         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5795         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5796 #ifdef HOSTAPD
5797         .hapd_init = i802_init,
5798         .hapd_deinit = i802_deinit,
5799         .get_seqnum = i802_get_seqnum,
5800         .flush = i802_flush,
5801         .read_sta_data = i802_read_sta_data,
5802         .sta_deauth = i802_sta_deauth,
5803         .sta_disassoc = i802_sta_disassoc,
5804         .get_inact_sec = i802_get_inact_sec,
5805         .sta_clear_stats = i802_sta_clear_stats,
5806         .set_rts = i802_set_rts,
5807         .set_frag = i802_set_frag,
5808         .set_rate_sets = i802_set_rate_sets,
5809         .set_cts_protect = i802_set_cts_protect,
5810         .set_preamble = i802_set_preamble,
5811         .set_short_slot_time = i802_set_short_slot_time,
5812         .set_tx_queue_params = i802_set_tx_queue_params,
5813         .set_sta_vlan = i802_set_sta_vlan,
5814         .set_wds_sta = i802_set_wds_sta,
5815 #endif /* HOSTAPD */
5816         .set_freq = i802_set_freq,
5817         .send_action = wpa_driver_nl80211_send_action,
5818         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5819         .cancel_remain_on_channel =
5820         wpa_driver_nl80211_cancel_remain_on_channel,
5821         .probe_req_report = wpa_driver_nl80211_probe_req_report,
5822         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5823         .deinit_ap = wpa_driver_nl80211_deinit_ap,
5824         .resume = wpa_driver_nl80211_resume,
5825         .send_ft_action = nl80211_send_ft_action,
5826         .signal_monitor = nl80211_signal_monitor,
5827         .send_frame = nl80211_send_frame,
5828         .set_intra_bss = nl80211_set_intra_bss,
5829 };