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                 event.assoc_reject.bssid = mgmt->bssid;
 596                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 597                         event.assoc_reject.resp_ies =
 598                                 (u8 *) mgmt->u.assoc_resp.variable;
 599                         event.assoc_reject.resp_ies_len =
 600                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 601                 }
 602                 event.assoc_reject.status_code = status;
 603
 604                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 605                 return;
 606         }
 607
 608         drv->associated = 1;
 609         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 610
 611         os_memset(&event, 0, sizeof(event));
 612         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 613                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 614                 event.assoc_info.resp_ies_len =
 615                         len - 24 - sizeof(mgmt->u.assoc_resp);
 616         }
 617
 618         event.assoc_info.freq = drv->assoc_freq;
 619
 620         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 621 }
 622
 623
 624 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 625                                enum nl80211_commands cmd, struct nlattr *status,
 626                                struct nlattr *addr, struct nlattr *req_ie,
 627                                struct nlattr *resp_ie)
 628 {
 629         union wpa_event_data event;
 630
 631         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 632                 /*
 633                  * Avoid reporting two association events that would confuse
 634                  * the core code.
 635                  */
 636                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 637                            "when using userspace SME", cmd);
 638                 return;
 639         }
 640
 641         os_memset(&event, 0, sizeof(event));
 642         if (cmd == NL80211_CMD_CONNECT &&
 643             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 644                 if (resp_ie) {
 645                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 646                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 647                 }
 648                 event.assoc_reject.status_code = nla_get_u16(status);
 649                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 650                 return;
 651         }
 652
 653         drv->associated = 1;
 654         if (addr)
 655                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 656
 657         if (req_ie) {
 658                 event.assoc_info.req_ies = nla_data(req_ie);
 659                 event.assoc_info.req_ies_len = nla_len(req_ie);
 660         }
 661         if (resp_ie) {
 662                 event.assoc_info.resp_ies = nla_data(resp_ie);
 663                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 664         }
 665
 666         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 667 }
 668
 669
 670 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 671                                enum nl80211_commands cmd, struct nlattr *addr)
 672 {
 673         union wpa_event_data event;
 674         enum wpa_event_type ev;
 675
 676         if (nla_len(addr) != ETH_ALEN)
 677                 return;
 678
 679         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 680                    cmd, MAC2STR((u8 *) nla_data(addr)));
 681
 682         if (cmd == NL80211_CMD_AUTHENTICATE)
 683                 ev = EVENT_AUTH_TIMED_OUT;
 684         else if (cmd == NL80211_CMD_ASSOCIATE)
 685                 ev = EVENT_ASSOC_TIMED_OUT;
 686         else
 687                 return;
 688
 689         os_memset(&event, 0, sizeof(event));
 690         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 691         wpa_supplicant_event(drv->ctx, ev, &event);
 692 }
 693
 694
 695 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
 696                             struct nlattr *freq, const u8 *frame, size_t len)
 697 {
 698         const struct ieee80211_mgmt *mgmt;
 699         union wpa_event_data event;
 700         u16 fc, stype;
 701
 702         mgmt = (const struct ieee80211_mgmt *) frame;
 703         if (len < 24) {
 704                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
 705                 return;
 706         }
 707
 708         fc = le_to_host16(mgmt->frame_control);
 709         stype = WLAN_FC_GET_STYPE(fc);
 710
 711         os_memset(&event, 0, sizeof(event));
 712         if (freq) {
 713                 event.rx_action.freq = nla_get_u32(freq);
 714                 drv->last_mgmt_freq = event.rx_action.freq;
 715         }
 716         if (stype == WLAN_FC_STYPE_ACTION) {
 717                 event.rx_action.da = mgmt->da;
 718                 event.rx_action.sa = mgmt->sa;
 719                 event.rx_action.bssid = mgmt->bssid;
 720                 event.rx_action.category = mgmt->u.action.category;
 721                 event.rx_action.data = &mgmt->u.action.category + 1;
 722                 event.rx_action.len = frame + len - event.rx_action.data;
 723                 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
 724         } else {
 725                 event.rx_mgmt.frame = frame;
 726                 event.rx_mgmt.frame_len = len;
 727                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 728         }
 729 }
 730
 731
 732 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
 733                                         struct nlattr *cookie, const u8 *frame,
 734                                         size_t len, struct nlattr *ack)
 735 {
 736         union wpa_event_data event;
 737         const struct ieee80211_hdr *hdr;
 738         u16 fc;
 739         u64 cookie_val;
 740
 741         if (!cookie)
 742                 return;
 743
 744         cookie_val = nla_get_u64(cookie);
 745         wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
 746                    "(ack=%d)",
 747                    (long long unsigned int) cookie_val,
 748                    cookie_val == drv->send_action_cookie ?
 749                    " (match)" : " (unknown)", ack != NULL);
 750         if (cookie_val != drv->send_action_cookie)
 751                 return;
 752
 753         hdr = (const struct ieee80211_hdr *) frame;
 754         fc = le_to_host16(hdr->frame_control);
 755
 756         os_memset(&event, 0, sizeof(event));
 757         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
 758         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
 759         event.tx_status.dst = hdr->addr1;
 760         event.tx_status.data = frame;
 761         event.tx_status.data_len = len;
 762         event.tx_status.ack = ack != NULL;
 763         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
 764 }
 765
 766
 767 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
 768                                        enum wpa_event_type type,
 769                                        const u8 *frame, size_t len)
 770 {
 771         const struct ieee80211_mgmt *mgmt;
 772         union wpa_event_data event;
 773         const u8 *bssid = NULL;
 774         u16 reason_code = 0;
 775
 776         mgmt = (const struct ieee80211_mgmt *) frame;
 777         if (len >= 24) {
 778                 bssid = mgmt->bssid;
 779
 780                 if (drv->associated != 0 &&
 781                     os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
 782                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
 783                         /*
 784                          * We have presumably received this deauth as a
 785                          * response to a clear_state_mismatch() outgoing
 786                          * deauth.  Don't let it take us offline!
 787                          */
 788                         wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
 789                                    "from Unknown BSSID " MACSTR " -- ignoring",
 790                                    MAC2STR(bssid));
 791                         return;
 792                 }
 793         }
 794
 795         drv->associated = 0;
 796         os_memset(&event, 0, sizeof(event));
 797
 798         /* Note: Same offset for Reason Code in both frame subtypes */
 799         if (len >= 24 + sizeof(mgmt->u.deauth))
 800                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
 801
 802         if (type == EVENT_DISASSOC) {
 803                 event.disassoc_info.addr = bssid;
 804                 event.disassoc_info.reason_code = reason_code;
 805                 if (frame + len > mgmt->u.disassoc.variable) {
 806                         event.disassoc_info.ie = mgmt->u.disassoc.variable;
 807                         event.disassoc_info.ie_len = frame + len -
 808                                 mgmt->u.disassoc.variable;
 809                 }
 810         } else {
 811                 event.deauth_info.addr = bssid;
 812                 event.deauth_info.reason_code = reason_code;
 813                 if (frame + len > mgmt->u.deauth.variable) {
 814                         event.deauth_info.ie = mgmt->u.deauth.variable;
 815                         event.deauth_info.ie_len = frame + len -
 816                                 mgmt->u.deauth.variable;
 817                 }
 818         }
 819
 820         wpa_supplicant_event(drv->ctx, type, &event);
 821 }
 822
 823
 824 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 825                        enum nl80211_commands cmd, struct nlattr *frame,
 826                        struct nlattr *addr, struct nlattr *timed_out,
 827                        struct nlattr *freq, struct nlattr *ack,
 828                        struct nlattr *cookie)
 829 {
 830         if (timed_out && addr) {
 831                 mlme_timeout_event(drv, cmd, addr);
 832                 return;
 833         }
 834
 835         if (frame == NULL) {
 836                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 837                            "data", cmd);
 838                 return;
 839         }
 840
 841         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 842         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 843                     nla_data(frame), nla_len(frame));
 844
 845         switch (cmd) {
 846         case NL80211_CMD_AUTHENTICATE:
 847                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 848                 break;
 849         case NL80211_CMD_ASSOCIATE:
 850                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 851                 break;
 852         case NL80211_CMD_DEAUTHENTICATE:
 853                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
 854                                            nla_data(frame), nla_len(frame));
 855                 break;
 856         case NL80211_CMD_DISASSOCIATE:
 857                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
 858                                            nla_data(frame), nla_len(frame));
 859                 break;
 860         case NL80211_CMD_FRAME:
 861                 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
 862                 break;
 863         case NL80211_CMD_FRAME_TX_STATUS:
 864                 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
 865                                             nla_len(frame), ack);
 866                 break;
 867         default:
 868                 break;
 869         }
 870 }
 871
 872
 873 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 874                                            struct nlattr *tb[])
 875 {
 876         union wpa_event_data data;
 877
 878         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 879         os_memset(&data, 0, sizeof(data));
 880         if (tb[NL80211_ATTR_MAC]) {
 881                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 882                             nla_data(tb[NL80211_ATTR_MAC]),
 883                             nla_len(tb[NL80211_ATTR_MAC]));
 884                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 885         }
 886         if (tb[NL80211_ATTR_KEY_SEQ]) {
 887                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 888                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 889                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 890         }
 891         if (tb[NL80211_ATTR_KEY_TYPE]) {
 892                 enum nl80211_key_type key_type =
 893                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 894                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 895                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 896                         data.michael_mic_failure.unicast = 1;
 897         } else
 898                 data.michael_mic_failure.unicast = 1;
 899
 900         if (tb[NL80211_ATTR_KEY_IDX]) {
 901                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 902                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 903         }
 904
 905         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 906 }
 907
 908
 909 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 910                                  struct nlattr *tb[])
 911 {
 912         if (tb[NL80211_ATTR_MAC] == NULL) {
 913                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 914                            "event");
 915                 return;
 916         }
 917         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 918         drv->associated = 1;
 919         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 920                    MAC2STR(drv->bssid));
 921
 922         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 923 }
 924
 925
 926 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 927                                          int cancel_event, struct nlattr *tb[])
 928 {
 929         unsigned int freq, chan_type, duration;
 930         union wpa_event_data data;
 931         u64 cookie;
 932
 933         if (tb[NL80211_ATTR_WIPHY_FREQ])
 934                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 935         else
 936                 freq = 0;
 937
 938         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 939                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 940         else
 941                 chan_type = 0;
 942
 943         if (tb[NL80211_ATTR_DURATION])
 944                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 945         else
 946                 duration = 0;
 947
 948         if (tb[NL80211_ATTR_COOKIE])
 949                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 950         else
 951                 cookie = 0;
 952
 953         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 954                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 955                    cancel_event, freq, chan_type, duration,
 956                    (long long unsigned int) cookie,
 957                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 958
 959         if (cookie != drv->remain_on_chan_cookie)
 960                 return; /* not for us */
 961
 962         drv->pending_remain_on_chan = !cancel_event;
 963
 964         os_memset(&data, 0, sizeof(data));
 965         data.remain_on_channel.freq = freq;
 966         data.remain_on_channel.duration = duration;
 967         wpa_supplicant_event(drv->ctx, cancel_event ?
 968                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 969                              EVENT_REMAIN_ON_CHANNEL, &data);
 970 }
 971
 972
 973 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 974                             struct nlattr *tb[])
 975 {
 976         union wpa_event_data event;
 977         struct nlattr *nl;
 978         int rem;
 979         struct scan_info *info;
 980 #define MAX_REPORT_FREQS 50
 981         int freqs[MAX_REPORT_FREQS];
 982         int num_freqs = 0;
 983
 984         os_memset(&event, 0, sizeof(event));
 985         info = &event.scan_info;
 986         info->aborted = aborted;
 987
 988         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 989                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 990                         struct wpa_driver_scan_ssid *s =
 991                                 &info->ssids[info->num_ssids];
 992                         s->ssid = nla_data(nl);
 993                         s->ssid_len = nla_len(nl);
 994                         info->num_ssids++;
 995                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 996                                 break;
 997                 }
 998         }
 999         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1000                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1001                 {
1002                         freqs[num_freqs] = nla_get_u32(nl);
1003                         num_freqs++;
1004                         if (num_freqs == MAX_REPORT_FREQS - 1)
1005                                 break;
1006                 }
1007                 info->freqs = freqs;
1008                 info->num_freqs = num_freqs;
1009         }
1010         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1011 }
1012
1013
1014 static int get_link_signal(struct nl_msg *msg, void *arg)
1015 {
1016         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1017         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1018         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1019         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1020                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1021         };
1022         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1023         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1024                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1025                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1026                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1027                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1028         };
1029         struct signal_change *sig_change = arg;
1030
1031         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1032                   genlmsg_attrlen(gnlh, 0), NULL);
1033         if (!tb[NL80211_ATTR_STA_INFO] ||
1034             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1035                              tb[NL80211_ATTR_STA_INFO], policy))
1036                 return NL_SKIP;
1037         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1038                 return NL_SKIP;
1039
1040         sig_change->current_signal =
1041                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1042
1043         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1044                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1045                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1046                                      rate_policy)) {
1047                         sig_change->current_txrate = 0;
1048                 } else {
1049                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1050                                 sig_change->current_txrate =
1051                                         nla_get_u16(rinfo[
1052                                              NL80211_RATE_INFO_BITRATE]) * 100;
1053                         }
1054                 }
1055         }
1056
1057         return NL_SKIP;
1058 }
1059
1060
1061 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1062                                    struct signal_change *sig)
1063 {
1064         struct nl_msg *msg;
1065
1066         sig->current_signal = -9999;
1067         sig->current_txrate = 0;
1068
1069         msg = nlmsg_alloc();
1070         if (!msg)
1071                 return -ENOMEM;
1072
1073         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1074                     0, NL80211_CMD_GET_STATION, 0);
1075
1076         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1077         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1078
1079         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1080  nla_put_failure:
1081         return -ENOBUFS;
1082 }
1083
1084
1085 static int get_link_noise(struct nl_msg *msg, void *arg)
1086 {
1087         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1088         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1089         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1090         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1091                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1092                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1093         };
1094         struct signal_change *sig_change = arg;
1095
1096         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1097                   genlmsg_attrlen(gnlh, 0), NULL);
1098
1099         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1100                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1101                 return NL_SKIP;
1102         }
1103
1104         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1105                              tb[NL80211_ATTR_SURVEY_INFO],
1106                              survey_policy)) {
1107                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1108                            "attributes!");
1109                 return NL_SKIP;
1110         }
1111
1112         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1113                 return NL_SKIP;
1114
1115         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1116             sig_change->frequency)
1117                 return NL_SKIP;
1118
1119         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1120                 return NL_SKIP;
1121
1122         sig_change->current_noise =
1123                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1124
1125         return NL_SKIP;
1126 }
1127
1128
1129 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1130                                   struct signal_change *sig_change)
1131 {
1132         struct nl_msg *msg;
1133
1134         sig_change->current_noise = 9999;
1135         sig_change->frequency = drv->assoc_freq;
1136
1137         msg = nlmsg_alloc();
1138         if (!msg)
1139                 return -ENOMEM;
1140
1141         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1142                     NLM_F_DUMP, NL80211_CMD_GET_SURVEY, 0);
1143
1144         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1145
1146         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1147  nla_put_failure:
1148         return -ENOBUFS;
1149 }
1150
1151
1152 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1153                               struct nlattr *tb[])
1154 {
1155         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1156                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1157                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1158                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1159         };
1160         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1161         enum nl80211_cqm_rssi_threshold_event event;
1162         union wpa_event_data ed;
1163         struct signal_change sig;
1164         int res;
1165
1166         if (tb[NL80211_ATTR_CQM] == NULL ||
1167             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1168                              cqm_policy)) {
1169                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1170                 return;
1171         }
1172
1173         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1174                 return;
1175         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1176
1177         os_memset(&ed, 0, sizeof(ed));
1178
1179         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1180                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1181                            "event: RSSI high");
1182                 ed.signal_change.above_threshold = 1;
1183         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1184                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1185                            "event: RSSI low");
1186                 ed.signal_change.above_threshold = 0;
1187         } else
1188                 return;
1189
1190         res = nl80211_get_link_signal(drv, &sig);
1191         if (res == 0) {
1192                 ed.signal_change.current_signal = sig.current_signal;
1193                 ed.signal_change.current_txrate = sig.current_txrate;
1194                 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm  txrate: %d",
1195                            sig.current_signal, sig.current_txrate);
1196         }
1197
1198         res = nl80211_get_link_noise(drv, &sig);
1199         if (res == 0) {
1200                 ed.signal_change.current_noise = sig.current_noise;
1201                 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1202                            sig.current_noise);
1203         }
1204
1205         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1206 }
1207
1208
1209 static int process_event(struct nl_msg *msg, void *arg)
1210 {
1211         struct wpa_driver_nl80211_data *drv = arg;
1212         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1213         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1214         union wpa_event_data data;
1215
1216         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1217                   genlmsg_attrlen(gnlh, 0), NULL);
1218
1219         if (tb[NL80211_ATTR_IFINDEX]) {
1220                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1221                 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
1222                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1223                                    " for foreign interface (ifindex %d)",
1224                                    gnlh->cmd, ifindex);
1225                         return NL_SKIP;
1226                 }
1227         }
1228
1229         if (drv->ap_scan_as_station &&
1230             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1231              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
1232                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1233                                             IEEE80211_MODE_AP);
1234                 drv->ap_scan_as_station = 0;
1235         }
1236
1237         switch (gnlh->cmd) {
1238         case NL80211_CMD_TRIGGER_SCAN:
1239                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1240                 break;
1241         case NL80211_CMD_NEW_SCAN_RESULTS:
1242                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1243                 drv->scan_complete_events = 1;
1244                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1245                                      drv->ctx);
1246                 send_scan_event(drv, 0, tb);
1247                 break;
1248         case NL80211_CMD_SCAN_ABORTED:
1249                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1250                 /*
1251                  * Need to indicate that scan results are available in order
1252                  * not to make wpa_supplicant stop its scanning.
1253                  */
1254                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1255                                      drv->ctx);
1256                 send_scan_event(drv, 1, tb);
1257                 break;
1258         case NL80211_CMD_AUTHENTICATE:
1259         case NL80211_CMD_ASSOCIATE:
1260         case NL80211_CMD_DEAUTHENTICATE:
1261         case NL80211_CMD_DISASSOCIATE:
1262         case NL80211_CMD_FRAME:
1263         case NL80211_CMD_FRAME_TX_STATUS:
1264                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1265                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1266                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1267                            tb[NL80211_ATTR_COOKIE]);
1268                 break;
1269         case NL80211_CMD_CONNECT:
1270         case NL80211_CMD_ROAM:
1271                 mlme_event_connect(drv, gnlh->cmd,
1272                                    tb[NL80211_ATTR_STATUS_CODE],
1273                                    tb[NL80211_ATTR_MAC],
1274                                    tb[NL80211_ATTR_REQ_IE],
1275                                    tb[NL80211_ATTR_RESP_IE]);
1276                 break;
1277         case NL80211_CMD_DISCONNECT:
1278                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1279                         /*
1280                          * Avoid reporting two disassociation events that could
1281                          * confuse the core code.
1282                          */
1283                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1284                                    "event when using userspace SME");
1285                         break;
1286                 }
1287                 drv->associated = 0;
1288                 os_memset(&data, 0, sizeof(data));
1289                 if (tb[NL80211_ATTR_REASON_CODE])
1290                         data.disassoc_info.reason_code =
1291                                 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1292                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1293                 break;
1294         case NL80211_CMD_MICHAEL_MIC_FAILURE:
1295                 mlme_event_michael_mic_failure(drv, tb);
1296                 break;
1297         case NL80211_CMD_JOIN_IBSS:
1298                 mlme_event_join_ibss(drv, tb);
1299                 break;
1300         case NL80211_CMD_REMAIN_ON_CHANNEL:
1301                 mlme_event_remain_on_channel(drv, 0, tb);
1302                 break;
1303         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1304                 mlme_event_remain_on_channel(drv, 1, tb);
1305                 break;
1306         case NL80211_CMD_NOTIFY_CQM:
1307                 nl80211_cqm_event(drv, tb);
1308                 break;
1309         case NL80211_CMD_REG_CHANGE:
1310                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
1311                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1312                                      NULL);
1313                 break;
1314         case NL80211_CMD_REG_BEACON_HINT:
1315                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
1316                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
1317                                      NULL);
1318                 break;
1319         default:
1320                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1321                            "(cmd=%d)", gnlh->cmd);
1322                 break;
1323         }
1324
1325         return NL_SKIP;
1326 }
1327
1328
1329 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1330                                              void *handle)
1331 {
1332         struct nl_cb *cb;
1333         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1334
1335         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1336
1337         cb = nl_cb_clone(drv->nl_cb);
1338         if (!cb)
1339                 return;
1340         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1341         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1342         nl_recvmsgs(handle, cb);
1343         nl_cb_put(cb);
1344 }
1345
1346
1347 /**
1348  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1349  * @priv: driver_nl80211 private data
1350  * @alpha2_arg: country to which to switch to
1351  * Returns: 0 on success, -1 on failure
1352  *
1353  * This asks nl80211 to set the regulatory domain for given
1354  * country ISO / IEC alpha2.
1355  */
1356 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1357 {
1358         struct i802_bss *bss = priv;
1359         struct wpa_driver_nl80211_data *drv = bss->drv;
1360         char alpha2[3];
1361         struct nl_msg *msg;
1362
1363         msg = nlmsg_alloc();
1364         if (!msg)
1365                 return -ENOMEM;
1366
1367         alpha2[0] = alpha2_arg[0];
1368         alpha2[1] = alpha2_arg[1];
1369         alpha2[2] = '\0';
1370
1371         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1372                     0, NL80211_CMD_REQ_SET_REG, 0);
1373
1374         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1375         if (send_and_recv_msgs(drv, msg, NULL, NULL))
1376                 return -EINVAL;
1377         return 0;
1378 nla_put_failure:
1379         return -EINVAL;
1380 }
1381
1382
1383 #ifndef HOSTAPD
1384 struct wiphy_info_data {
1385         int max_scan_ssids;
1386         int ap_supported;
1387         int auth_supported;
1388         int connect_supported;
1389 };
1390
1391
1392 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1393 {
1394         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1395         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1396         struct wiphy_info_data *info = arg;
1397
1398         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1399                   genlmsg_attrlen(gnlh, 0), NULL);
1400
1401         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1402                 info->max_scan_ssids =
1403                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1404
1405         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1406                 struct nlattr *nl_mode;
1407                 int i;
1408                 nla_for_each_nested(nl_mode,
1409                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1410                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1411                                 info->ap_supported = 1;
1412                                 break;
1413                         }
1414                 }
1415         }
1416
1417         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1418                 struct nlattr *nl_cmd;
1419                 int i;
1420
1421                 nla_for_each_nested(nl_cmd,
1422                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1423                         u32 cmd = nla_get_u32(nl_cmd);
1424                         if (cmd == NL80211_CMD_AUTHENTICATE)
1425                                 info->auth_supported = 1;
1426                         else if (cmd == NL80211_CMD_CONNECT)
1427                                 info->connect_supported = 1;
1428                 }
1429         }
1430
1431         return NL_SKIP;
1432 }
1433
1434
1435 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1436                                        struct wiphy_info_data *info)
1437 {
1438         struct nl_msg *msg;
1439
1440         os_memset(info, 0, sizeof(*info));
1441         msg = nlmsg_alloc();
1442         if (!msg)
1443                 return -1;
1444
1445         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1446                     0, NL80211_CMD_GET_WIPHY, 0);
1447
1448         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1449
1450         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1451                 return 0;
1452         msg = NULL;
1453 nla_put_failure:
1454         nlmsg_free(msg);
1455         return -1;
1456 }
1457
1458
1459 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1460 {
1461         struct wiphy_info_data info;
1462         if (wpa_driver_nl80211_get_info(drv, &info))
1463                 return -1;
1464         drv->has_capability = 1;
1465         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1466         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1467                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1468                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1469                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1470         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1471                 WPA_DRIVER_CAPA_ENC_WEP104 |
1472                 WPA_DRIVER_CAPA_ENC_TKIP |
1473                 WPA_DRIVER_CAPA_ENC_CCMP;
1474         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1475                 WPA_DRIVER_AUTH_SHARED |
1476                 WPA_DRIVER_AUTH_LEAP;
1477
1478         drv->capa.max_scan_ssids = info.max_scan_ssids;
1479         if (info.ap_supported)
1480                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1481
1482         if (info.auth_supported)
1483                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1484         else if (!info.connect_supported) {
1485                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1486                            "authentication/association or connect commands");
1487                 return -1;
1488         }
1489
1490         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1491         drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
1492         drv->capa.max_remain_on_chan = 5000;
1493
1494         return 0;
1495 }
1496 #endif /* HOSTAPD */
1497
1498
1499 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
1500 {
1501         int ret;
1502
1503         /* Initialize generic netlink and nl80211 */
1504
1505         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1506         if (drv->nl_cb == NULL) {
1507                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1508                            "callbacks");
1509                 goto err1;
1510         }
1511
1512         drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
1513         if (drv->nl_handle == NULL) {
1514                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1515                            "callbacks");
1516                 goto err2;
1517         }
1518
1519         drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
1520         if (drv->nl_handle_event == NULL) {
1521                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1522                            "callbacks (event)");
1523                 goto err2b;
1524         }
1525
1526         if (genl_connect(drv->nl_handle)) {
1527                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1528                            "netlink");
1529                 goto err3;
1530         }
1531
1532         if (genl_connect(drv->nl_handle_event)) {
1533                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1534                            "netlink (event)");
1535                 goto err3;
1536         }
1537
1538 #ifdef CONFIG_LIBNL20
1539         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1540                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1541                            "netlink cache");
1542                 goto err3;
1543         }
1544         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1545             0) {
1546                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1547                            "netlink cache (event)");
1548                 goto err3b;
1549         }
1550 #else /* CONFIG_LIBNL20 */
1551         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1552         if (drv->nl_cache == NULL) {
1553                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1554                            "netlink cache");
1555                 goto err3;
1556         }
1557         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1558         if (drv->nl_cache_event == NULL) {
1559                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1560                            "netlink cache (event)");
1561                 goto err3b;
1562         }
1563 #endif /* CONFIG_LIBNL20 */
1564
1565         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1566         if (drv->nl80211 == NULL) {
1567                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1568                            "found");
1569                 goto err4;
1570         }
1571
1572         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1573         if (ret >= 0)
1574                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1575         if (ret < 0) {
1576                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1577                            "membership for scan events: %d (%s)",
1578                            ret, strerror(-ret));
1579                 goto err4;
1580         }
1581
1582         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1583         if (ret >= 0)
1584                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1585         if (ret < 0) {
1586                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1587                            "membership for mlme events: %d (%s)",
1588                            ret, strerror(-ret));
1589                 goto err4;
1590         }
1591
1592         ret = nl_get_multicast_id(drv, "nl80211", "regulatory");
1593         if (ret >= 0)
1594                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1595         if (ret < 0) {
1596                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
1597                            "membership for regulatory events: %d (%s)",
1598                            ret, strerror(-ret));
1599                 /* Continue without regulatory events */
1600         }
1601
1602         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1603                                  wpa_driver_nl80211_event_receive, drv,
1604                                  drv->nl_handle_event);
1605
1606         return 0;
1607
1608 err4:
1609         nl_cache_free(drv->nl_cache_event);
1610 err3b:
1611         nl_cache_free(drv->nl_cache);
1612 err3:
1613         nl80211_handle_destroy(drv->nl_handle_event);
1614 err2b:
1615         nl80211_handle_destroy(drv->nl_handle);
1616 err2:
1617         nl_cb_put(drv->nl_cb);
1618 err1:
1619         return -1;
1620 }
1621
1622
1623 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1624 {
1625         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1626         /*
1627          * This may be for any interface; use ifdown event to disable
1628          * interface.
1629          */
1630 }
1631
1632
1633 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1634 {
1635         struct wpa_driver_nl80211_data *drv = ctx;
1636         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1637         if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1638                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1639                            "after rfkill unblock");
1640                 return;
1641         }
1642         /* rtnetlink ifup handler will report interface as enabled */
1643 }
1644
1645
1646 /**
1647  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1648  * @ctx: context to be used when calling wpa_supplicant functions,
1649  * e.g., wpa_supplicant_event()
1650  * @ifname: interface name, e.g., wlan0
1651  * Returns: Pointer to private data, %NULL on failure
1652  */
1653 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1654 {
1655         struct wpa_driver_nl80211_data *drv;
1656         struct netlink_config *cfg;
1657         struct rfkill_config *rcfg;
1658         struct i802_bss *bss;
1659
1660         drv = os_zalloc(sizeof(*drv));
1661         if (drv == NULL)
1662                 return NULL;
1663         drv->ctx = ctx;
1664         bss = &drv->first_bss;
1665         bss->drv = drv;
1666         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1667         drv->monitor_ifidx = -1;
1668         drv->monitor_sock = -1;
1669         drv->ioctl_sock = -1;
1670
1671         if (wpa_driver_nl80211_init_nl(drv)) {
1672                 os_free(drv);
1673                 return NULL;
1674         }
1675
1676         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1677         if (drv->ioctl_sock < 0) {
1678                 perror("socket(PF_INET,SOCK_DGRAM)");
1679                 goto failed;
1680         }
1681
1682         cfg = os_zalloc(sizeof(*cfg));
1683         if (cfg == NULL)
1684                 goto failed;
1685         cfg->ctx = drv;
1686         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1687         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1688         drv->netlink = netlink_init(cfg);
1689         if (drv->netlink == NULL) {
1690                 os_free(cfg);
1691                 goto failed;
1692         }
1693
1694         rcfg = os_zalloc(sizeof(*rcfg));
1695         if (rcfg == NULL)
1696                 goto failed;
1697         rcfg->ctx = drv;
1698         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1699         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1700         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1701         drv->rfkill = rfkill_init(rcfg);
1702         if (drv->rfkill == NULL) {
1703                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1704                 os_free(rcfg);
1705         }
1706
1707         if (wpa_driver_nl80211_finish_drv_init(drv))
1708                 goto failed;
1709
1710         return bss;
1711
1712 failed:
1713         rfkill_deinit(drv->rfkill);
1714         netlink_deinit(drv->netlink);
1715         if (drv->ioctl_sock >= 0)
1716                 close(drv->ioctl_sock);
1717
1718         genl_family_put(drv->nl80211);
1719         nl_cache_free(drv->nl_cache);
1720         nl80211_handle_destroy(drv->nl_handle);
1721         nl_cb_put(drv->nl_cb);
1722         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1723
1724         os_free(drv);
1725         return NULL;
1726 }
1727
1728
1729 static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1730                                   struct nl_handle *nl_handle,
1731                                   u16 type, const u8 *match, size_t match_len)
1732 {
1733         struct nl_msg *msg;
1734         int ret = -1;
1735
1736         msg = nlmsg_alloc();
1737         if (!msg)
1738                 return -1;
1739
1740         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1741                     NL80211_CMD_REGISTER_ACTION, 0);
1742
1743         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1744         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
1745         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1746
1747         ret = send_and_recv(drv, nl_handle, msg, NULL, NULL);
1748         msg = NULL;
1749         if (ret) {
1750                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
1751                            "failed (type=%u): ret=%d (%s)",
1752                            type, ret, strerror(-ret));
1753                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
1754                             match, match_len);
1755                 goto nla_put_failure;
1756         }
1757         ret = 0;
1758 nla_put_failure:
1759         nlmsg_free(msg);
1760         return ret;
1761 }
1762
1763
1764 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1765                                          const u8 *match, size_t match_len)
1766 {
1767         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1768         return nl80211_register_frame(drv, drv->nl_handle_event,
1769                                       type, match, match_len);
1770 }
1771
1772
1773 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1774 {
1775 #ifdef CONFIG_P2P
1776         /* GAS Initial Request */
1777         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1778                 return -1;
1779         /* GAS Initial Response */
1780         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1781                 return -1;
1782         /* GAS Comeback Request */
1783         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1784                 return -1;
1785         /* GAS Comeback Response */
1786         if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1787                 return -1;
1788         /* P2P Public Action */
1789         if (nl80211_register_action_frame(drv,
1790                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1791                                           6) < 0)
1792                 return -1;
1793         /* P2P Action */
1794         if (nl80211_register_action_frame(drv,
1795                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
1796                                           5) < 0)
1797                 return -1;
1798 #endif /* CONFIG_P2P */
1799
1800         /* FT Action frames */
1801         if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1802                 return -1;
1803         else
1804                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1805                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1806
1807         return 0;
1808 }
1809
1810
1811 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1812 {
1813         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1814 }
1815
1816
1817 static int
1818 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1819 {
1820         struct i802_bss *bss = &drv->first_bss;
1821         int send_rfkill_event = 0;
1822
1823         drv->ifindex = if_nametoindex(bss->ifname);
1824         drv->first_bss.ifindex = drv->ifindex;
1825
1826 #ifndef HOSTAPD
1827         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1828                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1829                            "use managed mode");
1830         }
1831
1832         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1833                 if (rfkill_is_blocked(drv->rfkill)) {
1834                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1835                                    "interface '%s' due to rfkill",
1836                                    bss->ifname);
1837                         drv->if_disabled = 1;
1838                         send_rfkill_event = 1;
1839                 } else {
1840                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
1841                                    "interface '%s' UP", bss->ifname);
1842                         return -1;
1843                 }
1844         }
1845
1846         if (wpa_driver_nl80211_capa(drv))
1847                 return -1;
1848
1849         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1850                                1, IF_OPER_DORMANT);
1851 #endif /* HOSTAPD */
1852
1853         if (nl80211_register_action_frames(drv) < 0) {
1854                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1855                            "frame processing - ignore for now");
1856                 /*
1857                  * Older kernel versions did not support this, so ignore the
1858                  * error for now. Some functionality may not be available
1859                  * because of this.
1860                  */
1861         }
1862
1863         if (send_rfkill_event) {
1864                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1865                                        drv, drv->ctx);
1866         }
1867
1868         return 0;
1869 }
1870
1871
1872 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1873 {
1874         struct nl_msg *msg;
1875
1876         msg = nlmsg_alloc();
1877         if (!msg)
1878                 return -ENOMEM;
1879
1880         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1881                     0, NL80211_CMD_DEL_BEACON, 0);
1882         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1883
1884         return send_and_recv_msgs(drv, msg, NULL, NULL);
1885  nla_put_failure:
1886         return -ENOBUFS;
1887 }
1888
1889
1890 /**
1891  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1892  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1893  *
1894  * Shut down driver interface and processing of driver events. Free
1895  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1896  */
1897 static void wpa_driver_nl80211_deinit(void *priv)
1898 {
1899         struct i802_bss *bss = priv;
1900         struct wpa_driver_nl80211_data *drv = bss->drv;
1901
1902         if (drv->nl_handle_preq)
1903                 wpa_driver_nl80211_probe_req_report(bss, 0);
1904         if (drv->added_if_into_bridge) {
1905                 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1906                     < 0)
1907                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1908                                    "interface %s from bridge %s: %s",
1909                                    bss->ifname, drv->brname, strerror(errno));
1910         }
1911         if (drv->added_bridge) {
1912                 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1913                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1914                                    "bridge %s: %s",
1915                                    drv->brname, strerror(errno));
1916         }
1917
1918         nl80211_remove_monitor_interface(drv);
1919
1920         if (drv->nlmode == NL80211_IFTYPE_AP)
1921                 wpa_driver_nl80211_del_beacon(drv);
1922
1923 #ifdef HOSTAPD
1924         if (drv->last_freq_ht) {
1925                 /* Clear HT flags from the driver */
1926                 struct hostapd_freq_params freq;
1927                 os_memset(&freq, 0, sizeof(freq));
1928                 freq.freq = drv->last_freq;
1929                 i802_set_freq(priv, &freq);
1930         }
1931
1932         if (drv->eapol_sock >= 0) {
1933                 eloop_unregister_read_sock(drv->eapol_sock);
1934                 close(drv->eapol_sock);
1935         }
1936
1937         if (drv->if_indices != drv->default_if_indices)
1938                 os_free(drv->if_indices);
1939 #endif /* HOSTAPD */
1940
1941         if (drv->disable_11b_rates)
1942                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1943
1944         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1945         netlink_deinit(drv->netlink);
1946         rfkill_deinit(drv->rfkill);
1947
1948         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1949
1950         (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1951         wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1952
1953         if (drv->ioctl_sock >= 0)
1954                 close(drv->ioctl_sock);
1955
1956         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1957         genl_family_put(drv->nl80211);
1958         nl_cache_free(drv->nl_cache);
1959         nl_cache_free(drv->nl_cache_event);
1960         nl80211_handle_destroy(drv->nl_handle);
1961         nl80211_handle_destroy(drv->nl_handle_event);
1962         nl_cb_put(drv->nl_cb);
1963
1964         os_free(drv->filter_ssids);
1965
1966         os_free(drv);
1967 }
1968
1969
1970 /**
1971  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1972  * @eloop_ctx: Driver private data
1973  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1974  *
1975  * This function can be used as registered timeout when starting a scan to
1976  * generate a scan completed event if the driver does not report this.
1977  */
1978 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1979 {
1980         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1981         if (drv->ap_scan_as_station) {
1982                 wpa_driver_nl80211_set_mode(&drv->first_bss,
1983                                             IEEE80211_MODE_AP);
1984                 drv->ap_scan_as_station = 0;
1985         }
1986         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1987         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1988 }
1989
1990
1991 /**
1992  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1993  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1994  * @params: Scan parameters
1995  * Returns: 0 on success, -1 on failure
1996  */
1997 static int wpa_driver_nl80211_scan(void *priv,
1998                                    struct wpa_driver_scan_params *params)
1999 {
2000         struct i802_bss *bss = priv;
2001         struct wpa_driver_nl80211_data *drv = bss->drv;
2002         int ret = 0, timeout;
2003         struct nl_msg *msg, *ssids, *freqs;
2004         size_t i;
2005
2006         msg = nlmsg_alloc();
2007         ssids = nlmsg_alloc();
2008         freqs = nlmsg_alloc();
2009         if (!msg || !ssids || !freqs) {
2010                 nlmsg_free(msg);
2011                 nlmsg_free(ssids);
2012                 nlmsg_free(freqs);
2013                 return -1;
2014         }
2015
2016         os_free(drv->filter_ssids);
2017         drv->filter_ssids = params->filter_ssids;
2018         params->filter_ssids = NULL;
2019         drv->num_filter_ssids = params->num_filter_ssids;
2020
2021         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2022                     NL80211_CMD_TRIGGER_SCAN, 0);
2023
2024         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2025
2026         for (i = 0; i < params->num_ssids; i++) {
2027                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
2028                                   params->ssids[i].ssid,
2029                                   params->ssids[i].ssid_len);
2030                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
2031                         params->ssids[i].ssid);
2032         }
2033         if (params->num_ssids)
2034                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
2035
2036         if (params->extra_ies) {
2037                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
2038                                   params->extra_ies, params->extra_ies_len);
2039                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
2040                         params->extra_ies);
2041         }
2042
2043         if (params->freqs) {
2044                 for (i = 0; params->freqs[i]; i++) {
2045                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
2046                                    "MHz", params->freqs[i]);
2047                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
2048                 }
2049                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
2050         }
2051
2052         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2053         msg = NULL;
2054         if (ret) {
2055                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
2056                            "(%s)", ret, strerror(-ret));
2057 #ifdef HOSTAPD
2058                 if (drv->nlmode == NL80211_IFTYPE_AP) {
2059                         /*
2060                          * mac80211 does not allow scan requests in AP mode, so
2061                          * try to do this in station mode.
2062                          */
2063                         if (wpa_driver_nl80211_set_mode(bss,
2064                                                         IEEE80211_MODE_INFRA))
2065                                 goto nla_put_failure;
2066
2067                         if (wpa_driver_nl80211_scan(drv, params)) {
2068                                 wpa_driver_nl80211_set_mode(bss,
2069                                                             IEEE80211_MODE_AP);
2070                                 goto nla_put_failure;
2071                         }
2072
2073                         /* Restore AP mode when processing scan results */
2074                         drv->ap_scan_as_station = 1;
2075                         ret = 0;
2076                 } else
2077                         goto nla_put_failure;
2078 #else /* HOSTAPD */
2079                 goto nla_put_failure;
2080 #endif /* HOSTAPD */
2081         }
2082
2083         /* Not all drivers generate "scan completed" wireless event, so try to
2084          * read results after a timeout. */
2085         timeout = 10;
2086         if (drv->scan_complete_events) {
2087                 /*
2088                  * The driver seems to deliver events to notify when scan is
2089                  * complete, so use longer timeout to avoid race conditions
2090                  * with scanning and following association request.
2091                  */
2092                 timeout = 30;
2093         }
2094         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
2095                    "seconds", ret, timeout);
2096         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
2097         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
2098                                drv, drv->ctx);
2099
2100 nla_put_failure:
2101         nlmsg_free(ssids);
2102         nlmsg_free(msg);
2103         nlmsg_free(freqs);
2104         return ret;
2105 }
2106
2107
2108 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
2109 {
2110         const u8 *end, *pos;
2111
2112         if (ies == NULL)
2113                 return NULL;
2114
2115         pos = ies;
2116         end = ies + ies_len;
2117
2118         while (pos + 1 < end) {
2119                 if (pos + 2 + pos[1] > end)
2120                         break;
2121                 if (pos[0] == ie)
2122                         return pos;
2123                 pos += 2 + pos[1];
2124         }
2125
2126         return NULL;
2127 }
2128
2129
2130 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
2131                                  const u8 *ie, size_t ie_len)
2132 {
2133         const u8 *ssid;
2134         size_t i;
2135
2136         if (drv->filter_ssids == NULL)
2137                 return 0;
2138
2139         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2140         if (ssid == NULL)
2141                 return 1;
2142
2143         for (i = 0; i < drv->num_filter_ssids; i++) {
2144                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2145                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2146                     0)
2147                         return 0;
2148         }
2149
2150         return 1;
2151 }
2152
2153
2154 struct nl80211_bss_info_arg {
2155         struct wpa_driver_nl80211_data *drv;
2156         struct wpa_scan_results *res;
2157 };
2158
2159 static int bss_info_handler(struct nl_msg *msg, void *arg)
2160 {
2161         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2162         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2163         struct nlattr *bss[NL80211_BSS_MAX + 1];
2164         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2165                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2166                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2167                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2168                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2169                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2170                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2171                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2172                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2173                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2174                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2175                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
2176         };
2177         struct nl80211_bss_info_arg *_arg = arg;
2178         struct wpa_scan_results *res = _arg->res;
2179         struct wpa_scan_res **tmp;
2180         struct wpa_scan_res *r;
2181         const u8 *ie, *beacon_ie;
2182         size_t ie_len, beacon_ie_len;
2183         u8 *pos;
2184
2185         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2186                   genlmsg_attrlen(gnlh, 0), NULL);
2187         if (!tb[NL80211_ATTR_BSS])
2188                 return NL_SKIP;
2189         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2190                              bss_policy))
2191                 return NL_SKIP;
2192         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2193                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2194                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2195         } else {
2196                 ie = NULL;
2197                 ie_len = 0;
2198         }
2199         if (bss[NL80211_BSS_BEACON_IES]) {
2200                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2201                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2202         } else {
2203                 beacon_ie = NULL;
2204                 beacon_ie_len = 0;
2205         }
2206
2207         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2208                                   ie ? ie_len : beacon_ie_len))
2209                 return NL_SKIP;
2210
2211         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
2212         if (r == NULL)
2213                 return NL_SKIP;
2214         if (bss[NL80211_BSS_BSSID])
2215                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2216                           ETH_ALEN);
2217         if (bss[NL80211_BSS_FREQUENCY])
2218                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2219         if (bss[NL80211_BSS_BEACON_INTERVAL])
2220                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2221         if (bss[NL80211_BSS_CAPABILITY])
2222                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2223         r->flags |= WPA_SCAN_NOISE_INVALID;
2224         if (bss[NL80211_BSS_SIGNAL_MBM]) {
2225                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
2226                 r->level /= 100; /* mBm to dBm */
2227                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2228         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2229                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2230                 r->flags |= WPA_SCAN_LEVEL_INVALID;
2231         } else
2232                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
2233         if (bss[NL80211_BSS_TSF])
2234                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
2235         if (bss[NL80211_BSS_SEEN_MS_AGO])
2236                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
2237         r->ie_len = ie_len;
2238         pos = (u8 *) (r + 1);
2239         if (ie) {
2240                 os_memcpy(pos, ie, ie_len);
2241                 pos += ie_len;
2242         }
2243         r->beacon_ie_len = beacon_ie_len;
2244         if (beacon_ie)
2245                 os_memcpy(pos, beacon_ie, beacon_ie_len);
2246
2247         if (bss[NL80211_BSS_STATUS]) {
2248                 enum nl80211_bss_status status;
2249                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2250                 switch (status) {
2251                 case NL80211_BSS_STATUS_AUTHENTICATED:
2252                         r->flags |= WPA_SCAN_AUTHENTICATED;
2253                         break;
2254                 case NL80211_BSS_STATUS_ASSOCIATED:
2255                         r->flags |= WPA_SCAN_ASSOCIATED;
2256                         break;
2257                 default:
2258                         break;
2259                 }
2260         }
2261
2262         tmp = os_realloc(res->res,
2263                          (res->num + 1) * sizeof(struct wpa_scan_res *));
2264         if (tmp == NULL) {
2265                 os_free(r);
2266                 return NL_SKIP;
2267         }
2268         tmp[res->num++] = r;
2269         res->res = tmp;
2270
2271         return NL_SKIP;
2272 }
2273
2274
2275 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2276                                  const u8 *addr)
2277 {
2278         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2279                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
2280                            "mismatch (" MACSTR ")", MAC2STR(addr));
2281                 wpa_driver_nl80211_mlme(drv, addr,
2282                                         NL80211_CMD_DEAUTHENTICATE,
2283                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
2284         }
2285 }
2286
2287
2288 static void wpa_driver_nl80211_check_bss_status(
2289         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2290 {
2291         size_t i;
2292
2293         for (i = 0; i < res->num; i++) {
2294                 struct wpa_scan_res *r = res->res[i];
2295                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2296                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2297                                    "indicates BSS status with " MACSTR
2298                                    " as authenticated",
2299                                    MAC2STR(r->bssid));
2300                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
2301                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2302                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2303                             0) {
2304                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2305                                            " in local state (auth=" MACSTR
2306                                            " assoc=" MACSTR ")",
2307                                            MAC2STR(drv->auth_bssid),
2308                                            MAC2STR(drv->bssid));
2309                                 clear_state_mismatch(drv, r->bssid);
2310                         }
2311                 }
2312
2313                 if (r->flags & WPA_SCAN_ASSOCIATED) {
2314                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2315                                    "indicate BSS status with " MACSTR
2316                                    " as associated",
2317                                    MAC2STR(r->bssid));
2318                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
2319                             !drv->associated) {
2320                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2321                                            "(not associated) does not match "
2322                                            "with BSS state");
2323                                 clear_state_mismatch(drv, r->bssid);
2324                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2325                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2326                                    0) {
2327                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2328                                            "(associated with " MACSTR ") does "
2329                                            "not match with BSS state",
2330                                            MAC2STR(drv->bssid));
2331                                 clear_state_mismatch(drv, r->bssid);
2332                                 clear_state_mismatch(drv, drv->bssid);
2333                         }
2334                 }
2335         }
2336 }
2337
2338
2339 static void wpa_scan_results_free(struct wpa_scan_results *res)
2340 {
2341         size_t i;
2342
2343         if (res == NULL)
2344                 return;
2345
2346         for (i = 0; i < res->num; i++)
2347                 os_free(res->res[i]);
2348         os_free(res->res);
2349         os_free(res);
2350 }
2351
2352
2353 static struct wpa_scan_results *
2354 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2355 {
2356         struct nl_msg *msg;
2357         struct wpa_scan_results *res;
2358         int ret;
2359         struct nl80211_bss_info_arg arg;
2360
2361         res = os_zalloc(sizeof(*res));
2362         if (res == NULL)
2363                 return NULL;
2364         msg = nlmsg_alloc();
2365         if (!msg)
2366                 goto nla_put_failure;
2367
2368         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2369                     NL80211_CMD_GET_SCAN, 0);
2370         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2371
2372         arg.drv = drv;
2373         arg.res = res;
2374         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2375         msg = NULL;
2376         if (ret == 0) {
2377                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2378                            (unsigned long) res->num);
2379                 return res;
2380         }
2381         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2382                    "(%s)", ret, strerror(-ret));
2383 nla_put_failure:
2384         nlmsg_free(msg);
2385         wpa_scan_results_free(res);
2386         return NULL;
2387 }
2388
2389
2390 /**
2391  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2392  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2393  * Returns: Scan results on success, -1 on failure
2394  */
2395 static struct wpa_scan_results *
2396 wpa_driver_nl80211_get_scan_results(void *priv)
2397 {
2398         struct i802_bss *bss = priv;
2399         struct wpa_driver_nl80211_data *drv = bss->drv;
2400         struct wpa_scan_results *res;
2401
2402         res = nl80211_get_scan_results(drv);
2403         if (res)
2404                 wpa_driver_nl80211_check_bss_status(drv, res);
2405         return res;
2406 }
2407
2408
2409 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2410 {
2411         struct wpa_scan_results *res;
2412         size_t i;
2413
2414         res = nl80211_get_scan_results(drv);
2415         if (res == NULL) {
2416                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2417                 return;
2418         }
2419
2420         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2421         for (i = 0; i < res->num; i++) {
2422                 struct wpa_scan_res *r = res->res[i];
2423                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2424                            (int) i, (int) res->num, MAC2STR(r->bssid),
2425                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2426                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2427         }
2428
2429         wpa_scan_results_free(res);
2430 }
2431
2432
2433 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2434                                       enum wpa_alg alg, const u8 *addr,
2435                                       int key_idx, int set_tx,
2436                                       const u8 *seq, size_t seq_len,
2437                                       const u8 *key, size_t key_len)
2438 {
2439         struct i802_bss *bss = priv;
2440         struct wpa_driver_nl80211_data *drv = bss->drv;
2441         int ifindex = if_nametoindex(ifname);
2442         struct nl_msg *msg;
2443         int ret;
2444
2445         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2446                    "set_tx=%d seq_len=%lu key_len=%lu",
2447                    __func__, ifindex, alg, addr, key_idx, set_tx,
2448                    (unsigned long) seq_len, (unsigned long) key_len);
2449
2450         msg = nlmsg_alloc();
2451         if (!msg)
2452                 return -ENOMEM;
2453
2454         if (alg == WPA_ALG_NONE) {
2455                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2456                             0, NL80211_CMD_DEL_KEY, 0);
2457         } else {
2458                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2459                             0, NL80211_CMD_NEW_KEY, 0);
2460                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2461                 switch (alg) {
2462                 case WPA_ALG_WEP:
2463                         if (key_len == 5)
2464                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2465                                             WLAN_CIPHER_SUITE_WEP40);
2466                         else
2467                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2468                                             WLAN_CIPHER_SUITE_WEP104);
2469                         break;
2470                 case WPA_ALG_TKIP:
2471                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2472                                     WLAN_CIPHER_SUITE_TKIP);
2473                         break;
2474                 case WPA_ALG_CCMP:
2475                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2476                                     WLAN_CIPHER_SUITE_CCMP);
2477                         break;
2478                 case WPA_ALG_IGTK:
2479                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2480                                     WLAN_CIPHER_SUITE_AES_CMAC);
2481                         break;
2482                 default:
2483                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2484                                    "algorithm %d", __func__, alg);
2485                         nlmsg_free(msg);
2486                         return -1;
2487                 }
2488         }
2489
2490         if (seq && seq_len)
2491                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2492
2493         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2494         {
2495                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
2496                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2497         }
2498         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2499         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2500
2501         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2502         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2503                 ret = 0;
2504         if (ret)
2505                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2506                            ret, strerror(-ret));
2507
2508         /*
2509          * If we failed or don't need to set the default TX key (below),
2510          * we're done here.
2511          */
2512         if (ret || !set_tx || alg == WPA_ALG_NONE)
2513                 return ret;
2514 #ifdef HOSTAPD
2515         if (addr)
2516                 return ret;
2517 #else /* HOSTAPD */
2518         if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2519                 return ret;
2520 #endif /* HOSTAPD */
2521
2522         msg = nlmsg_alloc();
2523         if (!msg)
2524                 return -ENOMEM;
2525
2526         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2527                     0, NL80211_CMD_SET_KEY, 0);
2528         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2529         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2530         if (alg == WPA_ALG_IGTK)
2531                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2532         else
2533                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2534
2535         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2536         if (ret == -ENOENT)
2537                 ret = 0;
2538         if (ret)
2539                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2540                            "err=%d %s)", ret, strerror(-ret));
2541         return ret;
2542
2543 nla_put_failure:
2544         return -ENOBUFS;
2545 }
2546
2547
2548 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2549                       int key_idx, int defkey,
2550                       const u8 *seq, size_t seq_len,
2551                       const u8 *key, size_t key_len)
2552 {
2553         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2554         if (!key_attr)
2555                 return -1;
2556
2557         if (defkey && alg == WPA_ALG_IGTK)
2558                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2559         else if (defkey)
2560                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2561
2562         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2563
2564         switch (alg) {
2565         case WPA_ALG_WEP:
2566                 if (key_len == 5)
2567                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2568                                     WLAN_CIPHER_SUITE_WEP40);
2569                 else
2570                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2571                                     WLAN_CIPHER_SUITE_WEP104);
2572                 break;
2573         case WPA_ALG_TKIP:
2574                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2575                 break;
2576         case WPA_ALG_CCMP:
2577                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2578                 break;
2579         case WPA_ALG_IGTK:
2580                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2581                             WLAN_CIPHER_SUITE_AES_CMAC);
2582                 break;
2583         default:
2584                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2585                            "algorithm %d", __func__, alg);
2586                 return -1;
2587         }
2588
2589         if (seq && seq_len)
2590                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2591
2592         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2593
2594         nla_nest_end(msg, key_attr);
2595
2596         return 0;
2597  nla_put_failure:
2598         return -1;
2599 }
2600
2601
2602 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2603                                  struct nl_msg *msg)
2604 {
2605         int i, privacy = 0;
2606         struct nlattr *nl_keys, *nl_key;
2607
2608         for (i = 0; i < 4; i++) {
2609                 if (!params->wep_key[i])
2610                         continue;
2611                 privacy = 1;
2612                 break;
2613         }
2614         if (!privacy)
2615                 return 0;
2616
2617         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2618
2619         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2620         if (!nl_keys)
2621                 goto nla_put_failure;
2622
2623         for (i = 0; i < 4; i++) {
2624                 if (!params->wep_key[i])
2625                         continue;
2626
2627                 nl_key = nla_nest_start(msg, i);
2628                 if (!nl_key)
2629                         goto nla_put_failure;
2630
2631                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2632                         params->wep_key[i]);
2633                 if (params->wep_key_len[i] == 5)
2634                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2635                                     WLAN_CIPHER_SUITE_WEP40);
2636                 else
2637                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2638                                     WLAN_CIPHER_SUITE_WEP104);
2639
2640                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2641
2642                 if (i == params->wep_tx_keyidx)
2643                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2644
2645                 nla_nest_end(msg, nl_key);
2646         }
2647         nla_nest_end(msg, nl_keys);
2648
2649         return 0;
2650
2651 nla_put_failure:
2652         return -ENOBUFS;
2653 }
2654
2655
2656 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2657                                    const u8 *addr, int cmd, u16 reason_code,
2658                                    int local_state_change)
2659 {
2660         int ret = -1;
2661         struct nl_msg *msg;
2662
2663         msg = nlmsg_alloc();
2664         if (!msg)
2665                 return -1;
2666
2667         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2668
2669         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2670         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2671         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2672         if (local_state_change)
2673                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2674
2675         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2676         msg = NULL;
2677         if (ret) {
2678                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2679                            "(%s)", ret, strerror(-ret));
2680                 goto nla_put_failure;
2681         }
2682         ret = 0;
2683
2684 nla_put_failure:
2685         nlmsg_free(msg);
2686         return ret;
2687 }
2688
2689
2690 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2691                                          const u8 *addr, int reason_code)
2692 {
2693         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2694                    __func__, MAC2STR(addr), reason_code);
2695         drv->associated = 0;
2696         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2697                                        reason_code, 0);
2698 }
2699
2700
2701 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2702                                              int reason_code)
2703 {
2704         struct i802_bss *bss = priv;
2705         struct wpa_driver_nl80211_data *drv = bss->drv;
2706         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2707                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2708         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2709                    __func__, MAC2STR(addr), reason_code);
2710         drv->associated = 0;
2711         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2712                                        reason_code, 0);
2713 }
2714
2715
2716 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2717                                            int reason_code)
2718 {
2719         struct i802_bss *bss = priv;
2720         struct wpa_driver_nl80211_data *drv = bss->drv;
2721         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2722                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2723         wpa_printf(MSG_DEBUG, "%s", __func__);
2724         drv->associated = 0;
2725         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2726                                        reason_code, 0);
2727 }
2728
2729
2730 static int wpa_driver_nl80211_authenticate(
2731         void *priv, struct wpa_driver_auth_params *params)
2732 {
2733         struct i802_bss *bss = priv;
2734         struct wpa_driver_nl80211_data *drv = bss->drv;
2735         int ret = -1, i;
2736         struct nl_msg *msg;
2737         enum nl80211_auth_type type;
2738         int count = 0;
2739
2740         drv->associated = 0;
2741         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2742         /* FIX: IBSS mode */
2743         if (drv->nlmode != NL80211_IFTYPE_STATION)
2744                 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2745
2746         if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2747                 return -1;
2748
2749 retry:
2750         msg = nlmsg_alloc();
2751         if (!msg)
2752                 return -1;
2753
2754         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2755                    drv->ifindex);
2756
2757         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2758                     NL80211_CMD_AUTHENTICATE, 0);
2759
2760         for (i = 0; i < 4; i++) {
2761                 if (!params->wep_key[i])
2762                         continue;
2763                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2764                                            NULL, i,
2765                                            i == params->wep_tx_keyidx, NULL, 0,
2766                                            params->wep_key[i],
2767                                            params->wep_key_len[i]);
2768                 if (params->wep_tx_keyidx != i)
2769                         continue;
2770                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2771                                params->wep_key[i], params->wep_key_len[i])) {
2772                         nlmsg_free(msg);
2773                         return -1;
2774                 }
2775         }
2776
2777         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2778         if (params->bssid) {
2779                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2780                            MAC2STR(params->bssid));
2781                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2782         }
2783         if (params->freq) {
2784                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2785                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2786         }
2787         if (params->ssid) {
2788                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2789                                   params->ssid, params->ssid_len);
2790                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2791                         params->ssid);
2792         }
2793         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2794         if (params->ie)
2795                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2796         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2797                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2798         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2799                 type = NL80211_AUTHTYPE_SHARED_KEY;
2800         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2801                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2802         else if (params->auth_alg & WPA_AUTH_ALG_FT)
2803                 type = NL80211_AUTHTYPE_FT;
2804         else
2805                 goto nla_put_failure;
2806         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2807         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2808         if (params->local_state_change) {
2809                 wpa_printf(MSG_DEBUG, "  * Local state change only");
2810                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2811         }
2812
2813         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2814         msg = NULL;
2815         if (ret) {
2816                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2817                            "(%s)", ret, strerror(-ret));
2818                 count++;
2819                 if (ret == -EALREADY && count == 1 && params->bssid &&
2820                     !params->local_state_change) {
2821                         /*
2822                          * mac80211 does not currently accept new
2823                          * authentication if we are already authenticated. As a
2824                          * workaround, force deauthentication and try again.
2825                          */
2826                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2827                                    "after forced deauthentication");
2828                         wpa_driver_nl80211_deauthenticate(
2829                                 bss, params->bssid,
2830                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2831                         nlmsg_free(msg);
2832                         goto retry;
2833                 }
2834                 goto nla_put_failure;
2835         }
2836         ret = 0;
2837         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2838                    "successfully");
2839
2840 nla_put_failure:
2841         nlmsg_free(msg);
2842         return ret;
2843 }
2844
2845
2846 struct phy_info_arg {
2847         u16 *num_modes;
2848         struct hostapd_hw_modes *modes;
2849 };
2850
2851 static int phy_info_handler(struct nl_msg *msg, void *arg)
2852 {
2853         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2854         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2855         struct phy_info_arg *phy_info = arg;
2856
2857         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2858
2859         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2860         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2861                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2862                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2863                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2864                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2865                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2866                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2867         };
2868
2869         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2870         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2871                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2872                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2873         };
2874
2875         struct nlattr *nl_band;
2876         struct nlattr *nl_freq;
2877         struct nlattr *nl_rate;
2878         int rem_band, rem_freq, rem_rate;
2879         struct hostapd_hw_modes *mode;
2880         int idx, mode_is_set;
2881
2882         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2883                   genlmsg_attrlen(gnlh, 0), NULL);
2884
2885         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2886                 return NL_SKIP;
2887
2888         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2889                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2890                 if (!mode)
2891                         return NL_SKIP;
2892                 phy_info->modes = mode;
2893
2894                 mode_is_set = 0;
2895
2896                 mode = &phy_info->modes[*(phy_info->num_modes)];
2897                 memset(mode, 0, sizeof(*mode));
2898                 *(phy_info->num_modes) += 1;
2899
2900                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2901                           nla_len(nl_band), NULL);
2902
2903                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2904                         mode->ht_capab = nla_get_u16(
2905                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2906                 }
2907
2908                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2909                         mode->a_mpdu_params |= nla_get_u8(
2910                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2911                                 0x03;
2912                 }
2913
2914                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2915                         mode->a_mpdu_params |= nla_get_u8(
2916                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2917                                 2;
2918                 }
2919
2920                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2921                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2922                         u8 *mcs;
2923                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2924                         os_memcpy(mode->mcs_set, mcs, 16);
2925                 }
2926
2927                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2928                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2929                                   nla_len(nl_freq), freq_policy);
2930                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2931                                 continue;
2932                         mode->num_channels++;
2933                 }
2934
2935                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2936                 if (!mode->channels)
2937                         return NL_SKIP;
2938
2939                 idx = 0;
2940
2941                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2942                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2943                                   nla_len(nl_freq), freq_policy);
2944                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2945                                 continue;
2946
2947                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2948                         mode->channels[idx].flag = 0;
2949
2950                         if (!mode_is_set) {
2951                                 /* crude heuristic */
2952                                 if (mode->channels[idx].freq < 4000)
2953                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2954                                 else
2955                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2956                                 mode_is_set = 1;
2957                         }
2958
2959                         /* crude heuristic */
2960                         if (mode->channels[idx].freq < 4000)
2961                                 if (mode->channels[idx].freq == 2484)
2962                                         mode->channels[idx].chan = 14;
2963                                 else
2964                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2965                         else
2966                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2967
2968                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2969                                 mode->channels[idx].flag |=
2970                                         HOSTAPD_CHAN_DISABLED;
2971                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2972                                 mode->channels[idx].flag |=
2973                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2974                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2975                                 mode->channels[idx].flag |=
2976                                         HOSTAPD_CHAN_NO_IBSS;
2977                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2978                                 mode->channels[idx].flag |=
2979                                         HOSTAPD_CHAN_RADAR;
2980
2981                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2982                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2983                                 mode->channels[idx].max_tx_power =
2984                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2985
2986                         idx++;
2987                 }
2988
2989                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2990                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2991                                   nla_len(nl_rate), rate_policy);
2992                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2993                                 continue;
2994                         mode->num_rates++;
2995                 }
2996
2997                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2998                 if (!mode->rates)
2999                         return NL_SKIP;
3000
3001                 idx = 0;
3002
3003                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
3004                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
3005                                   nla_len(nl_rate), rate_policy);
3006                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
3007                                 continue;
3008                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
3009
3010                         /* crude heuristic */
3011                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
3012                             mode->rates[idx] > 200)
3013                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
3014
3015                         idx++;
3016                 }
3017         }
3018
3019         return NL_SKIP;
3020 }
3021
3022 static struct hostapd_hw_modes *
3023 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
3024 {
3025         u16 m;
3026         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
3027         int i, mode11g_idx = -1;
3028
3029         /* If only 802.11g mode is included, use it to construct matching
3030          * 802.11b mode data. */
3031
3032         for (m = 0; m < *num_modes; m++) {
3033                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
3034                         return modes; /* 802.11b already included */
3035                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
3036                         mode11g_idx = m;
3037         }
3038
3039         if (mode11g_idx < 0)
3040                 return modes; /* 2.4 GHz band not supported at all */
3041
3042         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
3043         if (nmodes == NULL)
3044                 return modes; /* Could not add 802.11b mode */
3045
3046         mode = &nmodes[*num_modes];
3047         os_memset(mode, 0, sizeof(*mode));
3048         (*num_modes)++;
3049         modes = nmodes;
3050
3051         mode->mode = HOSTAPD_MODE_IEEE80211B;
3052
3053         mode11g = &modes[mode11g_idx];
3054         mode->num_channels = mode11g->num_channels;
3055         mode->channels = os_malloc(mode11g->num_channels *
3056                                    sizeof(struct hostapd_channel_data));
3057         if (mode->channels == NULL) {
3058                 (*num_modes)--;
3059                 return modes; /* Could not add 802.11b mode */
3060         }
3061         os_memcpy(mode->channels, mode11g->channels,
3062                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
3063
3064         mode->num_rates = 0;
3065         mode->rates = os_malloc(4 * sizeof(int));
3066         if (mode->rates == NULL) {
3067                 os_free(mode->channels);
3068                 (*num_modes)--;
3069                 return modes; /* Could not add 802.11b mode */
3070         }
3071
3072         for (i = 0; i < mode11g->num_rates; i++) {
3073                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
3074                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
3075                         continue;
3076                 mode->rates[mode->num_rates] = mode11g->rates[i];
3077                 mode->num_rates++;
3078                 if (mode->num_rates == 4)
3079                         break;
3080         }
3081
3082         if (mode->num_rates == 0) {
3083                 os_free(mode->channels);
3084                 os_free(mode->rates);
3085                 (*num_modes)--;
3086                 return modes; /* No 802.11b rates */
3087         }
3088
3089         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
3090                    "information");
3091
3092         return modes;
3093 }
3094
3095
3096 static struct hostapd_hw_modes *
3097 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
3098 {
3099         struct i802_bss *bss = priv;
3100         struct wpa_driver_nl80211_data *drv = bss->drv;
3101         struct nl_msg *msg;
3102         struct phy_info_arg result = {
3103                 .num_modes = num_modes,
3104                 .modes = NULL,
3105         };
3106
3107         *num_modes = 0;
3108         *flags = 0;
3109
3110         msg = nlmsg_alloc();
3111         if (!msg)
3112                 return NULL;
3113
3114         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3115                     0, NL80211_CMD_GET_WIPHY, 0);
3116
3117         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3118
3119         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
3120                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
3121  nla_put_failure:
3122         return NULL;
3123 }
3124
3125
3126 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
3127                                          const void *data, size_t len,
3128                                          int encrypt)
3129 {
3130         __u8 rtap_hdr[] = {
3131                 0x00, 0x00, /* radiotap version */
3132                 0x0e, 0x00, /* radiotap length */
3133                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
3134                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
3135                 0x00,       /* padding */
3136                 0x00, 0x00, /* RX and TX flags to indicate that */
3137                 0x00, 0x00, /* this is the injected frame directly */
3138         };
3139         struct iovec iov[2] = {
3140                 {
3141                         .iov_base = &rtap_hdr,
3142                         .iov_len = sizeof(rtap_hdr),
3143                 },
3144                 {
3145                         .iov_base = (void *) data,
3146                         .iov_len = len,
3147                 }
3148         };
3149         struct msghdr msg = {
3150                 .msg_name = NULL,
3151                 .msg_namelen = 0,
3152                 .msg_iov = iov,
3153                 .msg_iovlen = 2,
3154                 .msg_control = NULL,
3155                 .msg_controllen = 0,
3156                 .msg_flags = 0,
3157         };
3158
3159         if (encrypt)
3160                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3161
3162         return sendmsg(drv->monitor_sock, &msg, 0);
3163 }
3164
3165
3166 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3167                                         size_t data_len)
3168 {
3169         struct i802_bss *bss = priv;
3170         struct wpa_driver_nl80211_data *drv = bss->drv;
3171         struct ieee80211_mgmt *mgmt;
3172         int encrypt = 1;
3173         u16 fc;
3174
3175         mgmt = (struct ieee80211_mgmt *) data;
3176         fc = le_to_host16(mgmt->frame_control);
3177
3178         if (drv->nlmode == NL80211_IFTYPE_STATION &&
3179             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3180             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
3181                 /*
3182                  * The use of last_mgmt_freq is a bit of a hack,
3183                  * but it works due to the single-threaded nature
3184                  * of wpa_supplicant.
3185                  */
3186                 return nl80211_send_frame_cmd(drv, drv->last_mgmt_freq,
3187                                               data, data_len, NULL);
3188         }
3189
3190         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3191             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3192                 /*
3193                  * Only one of the authentication frame types is encrypted.
3194                  * In order for static WEP encryption to work properly (i.e.,
3195                  * to not encrypt the frame), we need to tell mac80211 about
3196                  * the frames that must not be encrypted.
3197                  */
3198                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3199                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
3200                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3201                         encrypt = 0;
3202         }
3203
3204         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
3205 }
3206
3207
3208 static int wpa_driver_nl80211_set_beacon(void *priv,
3209                                          const u8 *head, size_t head_len,
3210                                          const u8 *tail, size_t tail_len,
3211                                          int dtim_period, int beacon_int)
3212 {
3213         struct i802_bss *bss = priv;
3214         struct wpa_driver_nl80211_data *drv = bss->drv;
3215         struct nl_msg *msg;
3216         u8 cmd = NL80211_CMD_NEW_BEACON;
3217         int ret;
3218         int beacon_set;
3219         int ifindex = if_nametoindex(bss->ifname);
3220
3221         beacon_set = bss->beacon_set;
3222
3223         msg = nlmsg_alloc();
3224         if (!msg)
3225                 return -ENOMEM;
3226
3227         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
3228                    beacon_set);
3229         if (beacon_set)
3230                 cmd = NL80211_CMD_SET_BEACON;
3231
3232         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3233                     0, cmd, 0);
3234         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3235         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
3236         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3237         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
3238         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3239
3240         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3241         if (ret) {
3242                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3243                            ret, strerror(-ret));
3244         } else {
3245                 bss->beacon_set = 1;
3246         }
3247         return ret;
3248  nla_put_failure:
3249         return -ENOBUFS;
3250 }
3251
3252
3253 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3254                                        int freq, int ht_enabled,
3255                                        int sec_channel_offset)
3256 {
3257         struct nl_msg *msg;
3258         int ret;
3259
3260         msg = nlmsg_alloc();
3261         if (!msg)
3262                 return -1;
3263
3264         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3265                     NL80211_CMD_SET_WIPHY, 0);
3266
3267         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3268         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3269         if (ht_enabled) {
3270                 switch (sec_channel_offset) {
3271                 case -1:
3272                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3273                                     NL80211_CHAN_HT40MINUS);
3274                         break;
3275                 case 1:
3276                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3277                                     NL80211_CHAN_HT40PLUS);
3278                         break;
3279                 default:
3280                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3281                                     NL80211_CHAN_HT20);
3282                         break;
3283                 }
3284         }
3285
3286         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3287         if (ret == 0)
3288                 return 0;
3289         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3290                    "%d (%s)", freq, ret, strerror(-ret));
3291 nla_put_failure:
3292         return -1;
3293 }
3294
3295
3296 static int wpa_driver_nl80211_sta_add(void *priv,
3297                                       struct hostapd_sta_add_params *params)
3298 {
3299         struct i802_bss *bss = priv;
3300         struct wpa_driver_nl80211_data *drv = bss->drv;
3301         struct nl_msg *msg;
3302         int ret = -ENOBUFS;
3303
3304         msg = nlmsg_alloc();
3305         if (!msg)
3306                 return -ENOMEM;
3307
3308         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3309                     0, NL80211_CMD_NEW_STATION, 0);
3310
3311         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3312         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3313         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3314         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3315                 params->supp_rates);
3316         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3317                     params->listen_interval);
3318         if (params->ht_capabilities) {
3319                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3320                         sizeof(*params->ht_capabilities),
3321                         params->ht_capabilities);
3322         }
3323
3324         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3325         if (ret)
3326                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3327                            "result: %d (%s)", ret, strerror(-ret));
3328         if (ret == -EEXIST)
3329                 ret = 0;
3330  nla_put_failure:
3331         return ret;
3332 }
3333
3334
3335 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3336 {
3337         struct i802_bss *bss = priv;
3338         struct wpa_driver_nl80211_data *drv = bss->drv;
3339         struct nl_msg *msg;
3340         int ret;
3341
3342         msg = nlmsg_alloc();
3343         if (!msg)
3344                 return -ENOMEM;
3345
3346         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3347                     0, NL80211_CMD_DEL_STATION, 0);
3348
3349         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3350                     if_nametoindex(bss->ifname));
3351         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3352
3353         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3354         if (ret == -ENOENT)
3355                 return 0;
3356         return ret;
3357  nla_put_failure:
3358         return -ENOBUFS;
3359 }
3360
3361
3362 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3363                                  int ifidx)
3364 {
3365         struct nl_msg *msg;
3366
3367         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3368
3369 #ifdef HOSTAPD
3370         /* stop listening for EAPOL on this interface */
3371         del_ifidx(drv, ifidx);
3372 #endif /* HOSTAPD */
3373
3374         msg = nlmsg_alloc();
3375         if (!msg)
3376                 goto nla_put_failure;
3377
3378         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3379                     0, NL80211_CMD_DEL_INTERFACE, 0);
3380         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3381
3382         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3383                 return;
3384  nla_put_failure:
3385         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3386 }
3387
3388
3389 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3390                                      const char *ifname,
3391                                      enum nl80211_iftype iftype,
3392                                      const u8 *addr, int wds)
3393 {
3394         struct nl_msg *msg, *flags = NULL;
3395         int ifidx;
3396         int ret = -ENOBUFS;
3397
3398         msg = nlmsg_alloc();
3399         if (!msg)
3400                 return -1;
3401
3402         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3403                     0, NL80211_CMD_NEW_INTERFACE, 0);
3404         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3405         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3406         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3407
3408         if (iftype == NL80211_IFTYPE_MONITOR) {
3409                 int err;
3410
3411                 flags = nlmsg_alloc();
3412                 if (!flags)
3413                         goto nla_put_failure;
3414
3415                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3416
3417                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3418
3419                 nlmsg_free(flags);
3420
3421                 if (err)
3422                         goto nla_put_failure;
3423         } else if (wds) {
3424                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3425         }
3426
3427         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3428         if (ret) {
3429  nla_put_failure:
3430                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3431                            ifname, ret, strerror(-ret));
3432                 return ret;
3433         }
3434
3435         ifidx = if_nametoindex(ifname);
3436         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3437                    ifname, ifidx);
3438
3439         if (ifidx <= 0)
3440                 return -1;
3441
3442 #ifdef HOSTAPD
3443         /* start listening for EAPOL on this interface */
3444         add_ifidx(drv, ifidx);
3445 #endif /* HOSTAPD */
3446
3447         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3448             linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3449                 nl80211_remove_iface(drv, ifidx);
3450                 return -1;
3451         }
3452
3453         return ifidx;
3454 }
3455
3456
3457 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3458                                 const char *ifname, enum nl80211_iftype iftype,
3459                                 const u8 *addr, int wds)
3460 {
3461         int ret;
3462
3463         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3464
3465         /* if error occured and interface exists already */
3466         if (ret == -ENFILE && if_nametoindex(ifname)) {
3467                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3468
3469                 /* Try to remove the interface that was already there. */
3470                 nl80211_remove_iface(drv, if_nametoindex(ifname));
3471
3472                 /* Try to create the interface again */
3473                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3474                                                 wds);
3475         }
3476
3477         if (ret >= 0 && drv->disable_11b_rates)
3478                 nl80211_disable_11b_rates(drv, ret, 1);
3479
3480         return ret;
3481 }
3482
3483
3484 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3485 {
3486         struct ieee80211_hdr *hdr;
3487         u16 fc;
3488         union wpa_event_data event;
3489
3490         hdr = (struct ieee80211_hdr *) buf;
3491         fc = le_to_host16(hdr->frame_control);
3492
3493         os_memset(&event, 0, sizeof(event));
3494         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3495         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3496         event.tx_status.dst = hdr->addr1;
3497         event.tx_status.data = buf;
3498         event.tx_status.data_len = len;
3499         event.tx_status.ack = ok;
3500         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3501 }
3502
3503
3504 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3505                              u8 *buf, size_t len)
3506 {
3507         union wpa_event_data event;
3508         os_memset(&event, 0, sizeof(event));
3509         event.rx_from_unknown.frame = buf;
3510         event.rx_from_unknown.len = len;
3511         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3512 }
3513
3514
3515 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3516                          u8 *buf, size_t len, int datarate, int ssi_signal)
3517 {
3518         struct ieee80211_hdr *hdr;
3519         u16 fc;
3520         union wpa_event_data event;
3521
3522         hdr = (struct ieee80211_hdr *) buf;
3523         fc = le_to_host16(hdr->frame_control);
3524
3525         switch (WLAN_FC_GET_TYPE(fc)) {
3526         case WLAN_FC_TYPE_MGMT:
3527                 os_memset(&event, 0, sizeof(event));
3528                 event.rx_mgmt.frame = buf;
3529                 event.rx_mgmt.frame_len = len;
3530                 event.rx_mgmt.datarate = datarate;
3531                 event.rx_mgmt.ssi_signal = ssi_signal;
3532                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3533                 break;
3534         case WLAN_FC_TYPE_CTRL:
3535                 /* can only get here with PS-Poll frames */
3536                 wpa_printf(MSG_DEBUG, "CTRL");
3537                 from_unknown_sta(drv, buf, len);
3538                 break;
3539         case WLAN_FC_TYPE_DATA:
3540                 from_unknown_sta(drv, buf, len);
3541                 break;
3542         }
3543 }
3544
3545
3546 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3547 {
3548         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3549         int len;
3550         unsigned char buf[3000];
3551         struct ieee80211_radiotap_iterator iter;
3552         int ret;
3553         int datarate = 0, ssi_signal = 0;
3554         int injected = 0, failed = 0, rxflags = 0;
3555
3556         len = recv(sock, buf, sizeof(buf), 0);
3557         if (len < 0) {
3558                 perror("recv");
3559                 return;
3560         }
3561
3562         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3563                 printf("received invalid radiotap frame\n");
3564                 return;
3565         }
3566
3567         while (1) {
3568                 ret = ieee80211_radiotap_iterator_next(&iter);
3569                 if (ret == -ENOENT)
3570                         break;
3571                 if (ret) {
3572                         printf("received invalid radiotap frame (%d)\n", ret);
3573                         return;
3574                 }
3575                 switch (iter.this_arg_index) {
3576                 case IEEE80211_RADIOTAP_FLAGS:
3577                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3578                                 len -= 4;
3579                         break;
3580                 case IEEE80211_RADIOTAP_RX_FLAGS:
3581                         rxflags = 1;
3582                         break;
3583                 case IEEE80211_RADIOTAP_TX_FLAGS:
3584                         injected = 1;
3585                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3586                                         IEEE80211_RADIOTAP_F_TX_FAIL;
3587                         break;
3588                 case IEEE80211_RADIOTAP_DATA_RETRIES:
3589                         break;
3590                 case IEEE80211_RADIOTAP_CHANNEL:
3591                         /* TODO: convert from freq/flags to channel number */
3592                         break;
3593                 case IEEE80211_RADIOTAP_RATE:
3594                         datarate = *iter.this_arg * 5;
3595                         break;
3596                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3597                         ssi_signal = *iter.this_arg;
3598                         break;
3599                 }
3600         }
3601
3602         if (rxflags && injected)
3603                 return;
3604
3605         if (!injected)
3606                 handle_frame(drv, buf + iter.max_length,
3607                              len - iter.max_length, datarate, ssi_signal);
3608         else
3609                 handle_tx_callback(drv->ctx, buf + iter.max_length,
3610                                    len - iter.max_length, !failed);
3611 }
3612
3613
3614 /*
3615  * we post-process the filter code later and rewrite
3616  * this to the offset to the last instruction
3617  */
3618 #define PASS    0xFF
3619 #define FAIL    0xFE
3620
3621 static struct sock_filter msock_filter_insns[] = {
3622         /*
3623          * do a little-endian load of the radiotap length field
3624          */
3625         /* load lower byte into A */
3626         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
3627         /* put it into X (== index register) */
3628         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3629         /* load upper byte into A */
3630         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
3631         /* left-shift it by 8 */
3632         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3633         /* or with X */
3634         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3635         /* put result into X */
3636         BPF_STMT(BPF_MISC| BPF_TAX, 0),
3637
3638         /*
3639          * Allow management frames through, this also gives us those
3640          * management frames that we sent ourselves with status
3641          */
3642         /* load the lower byte of the IEEE 802.11 frame control field */
3643         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
3644         /* mask off frame type and version */
3645         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3646         /* accept frame if it's both 0, fall through otherwise */
3647         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3648
3649         /*
3650          * TODO: add a bit to radiotap RX flags that indicates
3651          * that the sending station is not associated, then
3652          * add a filter here that filters on our DA and that flag
3653          * to allow us to deauth frames to that bad station.
3654          *
3655          * For now allow all To DS data frames through.
3656          */
3657         /* load the IEEE 802.11 frame control field */
3658         BPF_STMT(BPF_LD  | BPF_H | BPF_IND, 0),
3659         /* mask off frame type, version and DS status */
3660         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
3661         /* accept frame if version 0, type 2 and To DS, fall through otherwise
3662          */
3663         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
3664
3665 #if 0
3666         /*
3667          * drop non-data frames
3668          */
3669         /* load the lower byte of the frame control field */
3670         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3671         /* mask off QoS bit */
3672         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
3673         /* drop non-data frames */
3674         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
3675 #endif
3676         /* load the upper byte of the frame control field */
3677         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
3678         /* mask off toDS/fromDS */
3679         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
3680         /* accept WDS frames */
3681         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
3682
3683         /*
3684          * add header length to index
3685          */
3686         /* load the lower byte of the frame control field */
3687         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
3688         /* mask off QoS bit */
3689         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
3690         /* right shift it by 6 to give 0 or 2 */
3691         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
3692         /* add data frame header length */
3693         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
3694         /* add index, was start of 802.11 header */
3695         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
3696         /* move to index, now start of LL header */
3697         BPF_STMT(BPF_MISC | BPF_TAX, 0),
3698
3699         /*
3700          * Accept empty data frames, we use those for
3701          * polling activity.
3702          */
3703         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
3704         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3705
3706         /*
3707          * Accept EAPOL frames
3708          */
3709         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
3710         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3711         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
3712         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3713
3714         /* keep these last two statements or change the code below */
3715         /* return 0 == "DROP" */
3716         BPF_STMT(BPF_RET | BPF_K, 0),
3717         /* return ~0 == "keep all" */
3718         BPF_STMT(BPF_RET | BPF_K, ~0),
3719 };
3720
3721 static struct sock_fprog msock_filter = {
3722         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3723         .filter = msock_filter_insns,
3724 };
3725
3726
3727 static int add_monitor_filter(int s)
3728 {
3729         int idx;
3730
3731         /* rewrite all PASS/FAIL jump offsets */
3732         for (idx = 0; idx < msock_filter.len; idx++) {
3733                 struct sock_filter *insn = &msock_filter_insns[idx];
3734
3735                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3736                         if (insn->code == (BPF_JMP|BPF_JA)) {
3737                                 if (insn->k == PASS)
3738                                         insn->k = msock_filter.len - idx - 2;
3739                                 else if (insn->k == FAIL)
3740                                         insn->k = msock_filter.len - idx - 3;
3741                         }
3742
3743                         if (insn->jt == PASS)
3744                                 insn->jt = msock_filter.len - idx - 2;
3745                         else if (insn->jt == FAIL)
3746                                 insn->jt = msock_filter.len - idx - 3;
3747
3748                         if (insn->jf == PASS)
3749                                 insn->jf = msock_filter.len - idx - 2;
3750                         else if (insn->jf == FAIL)
3751                                 insn->jf = msock_filter.len - idx - 3;
3752                 }
3753         }
3754
3755         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3756                        &msock_filter, sizeof(msock_filter))) {
3757                 perror("SO_ATTACH_FILTER");
3758                 return -1;
3759         }
3760
3761         return 0;
3762 }
3763
3764
3765 static void nl80211_remove_monitor_interface(
3766         struct wpa_driver_nl80211_data *drv)
3767 {
3768         if (drv->monitor_ifidx >= 0) {
3769                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3770                 drv->monitor_ifidx = -1;
3771         }
3772         if (drv->monitor_sock >= 0) {
3773                 eloop_unregister_read_sock(drv->monitor_sock);
3774                 close(drv->monitor_sock);
3775                 drv->monitor_sock = -1;
3776         }
3777 }
3778
3779
3780 static int
3781 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3782 {
3783         char buf[IFNAMSIZ];
3784         struct sockaddr_ll ll;
3785         int optval;
3786         socklen_t optlen;
3787
3788         snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3789         buf[IFNAMSIZ - 1] = '\0';
3790
3791         drv->monitor_ifidx =
3792                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3793                                      0);
3794
3795         if (drv->monitor_ifidx < 0)
3796                 return -1;
3797
3798         if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3799                 goto error;
3800
3801         memset(&ll, 0, sizeof(ll));
3802         ll.sll_family = AF_PACKET;
3803         ll.sll_ifindex = drv->monitor_ifidx;
3804         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3805         if (drv->monitor_sock < 0) {
3806                 perror("socket[PF_PACKET,SOCK_RAW]");
3807                 goto error;
3808         }
3809
3810         if (add_monitor_filter(drv->monitor_sock)) {
3811                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3812                            "interface; do filtering in user space");
3813                 /* This works, but will cost in performance. */
3814         }
3815
3816         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3817                 perror("monitor socket bind");
3818                 goto error;
3819         }
3820
3821         optlen = sizeof(optval);
3822         optval = 20;
3823         if (setsockopt
3824             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3825                 perror("Failed to set socket priority");
3826                 goto error;
3827         }
3828
3829         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3830                                      drv, NULL)) {
3831                 printf("Could not register monitor read socket\n");
3832                 goto error;
3833         }
3834
3835         return 0;
3836  error:
3837         nl80211_remove_monitor_interface(drv);
3838         return -1;
3839 }
3840
3841
3842 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3843
3844 static int wpa_driver_nl80211_hapd_send_eapol(
3845         void *priv, const u8 *addr, const u8 *data,
3846         size_t data_len, int encrypt, const u8 *own_addr)
3847 {
3848         struct i802_bss *bss = priv;
3849         struct wpa_driver_nl80211_data *drv = bss->drv;
3850         struct ieee80211_hdr *hdr;
3851         size_t len;
3852         u8 *pos;
3853         int res;
3854 #if 0 /* FIX */
3855         int qos = sta->flags & WPA_STA_WMM;
3856 #else
3857         int qos = 0;
3858 #endif
3859
3860         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3861                 data_len;
3862         hdr = os_zalloc(len);
3863         if (hdr == NULL) {
3864                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3865                        (unsigned long) len);
3866                 return -1;
3867         }
3868
3869         hdr->frame_control =
3870                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3871         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3872         if (encrypt)
3873                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3874 #if 0 /* To be enabled if qos determination is added above */
3875         if (qos) {
3876                 hdr->frame_control |=
3877                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3878         }
3879 #endif
3880
3881         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3882         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3883         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3884         pos = (u8 *) (hdr + 1);
3885
3886 #if 0 /* To be enabled if qos determination is added above */
3887         if (qos) {
3888                 /* add an empty QoS header if needed */
3889                 pos[0] = 0;
3890                 pos[1] = 0;
3891                 pos += 2;
3892         }
3893 #endif
3894
3895         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3896         pos += sizeof(rfc1042_header);
3897         WPA_PUT_BE16(pos, ETH_P_PAE);
3898         pos += 2;
3899         memcpy(pos, data, data_len);
3900
3901         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3902         if (res < 0) {
3903                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3904                            "failed: %d (%s)",
3905                            (unsigned long) len, errno, strerror(errno));
3906         }
3907         os_free(hdr);
3908
3909         return res;
3910 }
3911
3912
3913 static u32 sta_flags_nl80211(int flags)
3914 {
3915         u32 f = 0;
3916
3917         if (flags & WPA_STA_AUTHORIZED)
3918                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3919         if (flags & WPA_STA_WMM)
3920                 f |= BIT(NL80211_STA_FLAG_WME);
3921         if (flags & WPA_STA_SHORT_PREAMBLE)
3922                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3923         if (flags & WPA_STA_MFP)
3924                 f |= BIT(NL80211_STA_FLAG_MFP);
3925
3926         return f;
3927 }
3928
3929
3930 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3931                                             int total_flags,
3932                                             int flags_or, int flags_and)
3933 {
3934         struct i802_bss *bss = priv;
3935         struct wpa_driver_nl80211_data *drv = bss->drv;
3936         struct nl_msg *msg, *flags = NULL;
3937         struct nl80211_sta_flag_update upd;
3938
3939         msg = nlmsg_alloc();
3940         if (!msg)
3941                 return -ENOMEM;
3942
3943         flags = nlmsg_alloc();
3944         if (!flags) {
3945                 nlmsg_free(msg);
3946                 return -ENOMEM;
3947         }
3948
3949         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3950                     0, NL80211_CMD_SET_STATION, 0);
3951
3952         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3953                     if_nametoindex(bss->ifname));
3954         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3955
3956         /*
3957          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3958          * can be removed eventually.
3959          */
3960         if (total_flags & WPA_STA_AUTHORIZED)
3961                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3962
3963         if (total_flags & WPA_STA_WMM)
3964                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3965
3966         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3967                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3968
3969         if (total_flags & WPA_STA_MFP)
3970                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3971
3972         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3973                 goto nla_put_failure;
3974
3975         os_memset(&upd, 0, sizeof(upd));
3976         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3977         upd.set = sta_flags_nl80211(flags_or);
3978         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3979
3980         nlmsg_free(flags);
3981
3982         return send_and_recv_msgs(drv, msg, NULL, NULL);
3983  nla_put_failure:
3984         nlmsg_free(flags);
3985         return -ENOBUFS;
3986 }
3987
3988
3989 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3990                                  struct wpa_driver_associate_params *params)
3991 {
3992         if (params->p2p)
3993                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3994                            "group (GO)");
3995         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3996             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3997                 nl80211_remove_monitor_interface(drv);
3998                 return -1;
3999         }
4000
4001         /* TODO: setup monitor interface (and add code somewhere to remove this
4002          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
4003
4004         return 0;
4005 }
4006
4007
4008 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
4009 {
4010         struct nl_msg *msg;
4011         int ret = -1;
4012
4013         msg = nlmsg_alloc();
4014         if (!msg)
4015                 return -1;
4016
4017         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4018                     NL80211_CMD_LEAVE_IBSS, 0);
4019         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4020         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4021         msg = NULL;
4022         if (ret) {
4023                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
4024                            "(%s)", ret, strerror(-ret));
4025                 goto nla_put_failure;
4026         }
4027
4028         ret = 0;
4029         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
4030
4031 nla_put_failure:
4032         nlmsg_free(msg);
4033         return ret;
4034 }
4035
4036
4037 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
4038                                    struct wpa_driver_associate_params *params)
4039 {
4040         struct nl_msg *msg;
4041         int ret = -1;
4042         int count = 0;
4043
4044         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
4045
4046         if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
4047                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
4048                            "IBSS mode");
4049                 return -1;
4050         }
4051
4052 retry:
4053         msg = nlmsg_alloc();
4054         if (!msg)
4055                 return -1;
4056
4057         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4058                     NL80211_CMD_JOIN_IBSS, 0);
4059         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4060
4061         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
4062                 goto nla_put_failure;
4063
4064         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4065                           params->ssid, params->ssid_len);
4066         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4067                 params->ssid);
4068         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4069         drv->ssid_len = params->ssid_len;
4070
4071         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4072         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4073
4074         ret = nl80211_set_conn_keys(params, msg);
4075         if (ret)
4076                 goto nla_put_failure;
4077
4078         if (params->wpa_ie) {
4079                 wpa_hexdump(MSG_DEBUG,
4080                             "  * Extra IEs for Beacon/Probe Response frames",
4081                             params->wpa_ie, params->wpa_ie_len);
4082                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4083                         params->wpa_ie);
4084         }
4085
4086         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4087         msg = NULL;
4088         if (ret) {
4089                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
4090                            ret, strerror(-ret));
4091                 count++;
4092                 if (ret == -EALREADY && count == 1) {
4093                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
4094                                    "forced leave");
4095                         nl80211_leave_ibss(drv);
4096                         nlmsg_free(msg);
4097                         goto retry;
4098                 }
4099
4100                 goto nla_put_failure;
4101         }
4102         ret = 0;
4103         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
4104
4105 nla_put_failure:
4106         nlmsg_free(msg);
4107         return ret;
4108 }
4109
4110
4111 static int wpa_driver_nl80211_connect(
4112         struct wpa_driver_nl80211_data *drv,
4113         struct wpa_driver_associate_params *params)
4114 {
4115         struct nl_msg *msg;
4116         enum nl80211_auth_type type;
4117         int ret = 0;
4118
4119         msg = nlmsg_alloc();
4120         if (!msg)
4121                 return -1;
4122
4123         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
4124         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4125                     NL80211_CMD_CONNECT, 0);
4126
4127         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4128         if (params->bssid) {
4129                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4130                            MAC2STR(params->bssid));
4131                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4132         }
4133         if (params->freq) {
4134                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4135                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4136         }
4137         if (params->ssid) {
4138                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4139                                   params->ssid, params->ssid_len);
4140                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4141                         params->ssid);
4142                 if (params->ssid_len > sizeof(drv->ssid))
4143                         goto nla_put_failure;
4144                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4145                 drv->ssid_len = params->ssid_len;
4146         }
4147         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4148         if (params->wpa_ie)
4149                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4150                         params->wpa_ie);
4151
4152         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4153                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4154         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4155                 type = NL80211_AUTHTYPE_SHARED_KEY;
4156         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4157                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4158         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4159                 type = NL80211_AUTHTYPE_FT;
4160         else
4161                 goto nla_put_failure;
4162
4163         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4164         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4165
4166         if (params->wpa_ie && params->wpa_ie_len) {
4167                 enum nl80211_wpa_versions ver;
4168
4169                 if (params->wpa_ie[0] == WLAN_EID_RSN)
4170                         ver = NL80211_WPA_VERSION_2;
4171                 else
4172                         ver = NL80211_WPA_VERSION_1;
4173
4174                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
4175                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4176         }
4177
4178         if (params->pairwise_suite != CIPHER_NONE) {
4179                 int cipher;
4180
4181                 switch (params->pairwise_suite) {
4182                 case CIPHER_WEP40:
4183                         cipher = WLAN_CIPHER_SUITE_WEP40;
4184                         break;
4185                 case CIPHER_WEP104:
4186                         cipher = WLAN_CIPHER_SUITE_WEP104;
4187                         break;
4188                 case CIPHER_CCMP:
4189                         cipher = WLAN_CIPHER_SUITE_CCMP;
4190                         break;
4191                 case CIPHER_TKIP:
4192                 default:
4193                         cipher = WLAN_CIPHER_SUITE_TKIP;
4194                         break;
4195                 }
4196                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4197         }
4198
4199         if (params->group_suite != CIPHER_NONE) {
4200                 int cipher;
4201
4202                 switch (params->group_suite) {
4203                 case CIPHER_WEP40:
4204                         cipher = WLAN_CIPHER_SUITE_WEP40;
4205                         break;
4206                 case CIPHER_WEP104:
4207                         cipher = WLAN_CIPHER_SUITE_WEP104;
4208                         break;
4209                 case CIPHER_CCMP:
4210                         cipher = WLAN_CIPHER_SUITE_CCMP;
4211                         break;
4212                 case CIPHER_TKIP:
4213                 default:
4214                         cipher = WLAN_CIPHER_SUITE_TKIP;
4215                         break;
4216                 }
4217                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4218         }
4219
4220         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4221             params->key_mgmt_suite == KEY_MGMT_PSK) {
4222                 int mgmt = WLAN_AKM_SUITE_PSK;
4223
4224                 switch (params->key_mgmt_suite) {
4225                 case KEY_MGMT_802_1X:
4226                         mgmt = WLAN_AKM_SUITE_8021X;
4227                         break;
4228                 case KEY_MGMT_PSK:
4229                 default:
4230                         mgmt = WLAN_AKM_SUITE_PSK;
4231                         break;
4232                 }
4233                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4234         }
4235
4236         ret = nl80211_set_conn_keys(params, msg);
4237         if (ret)
4238                 goto nla_put_failure;
4239
4240         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4241         msg = NULL;
4242         if (ret) {
4243                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4244                            "(%s)", ret, strerror(-ret));
4245                 goto nla_put_failure;
4246         }
4247         ret = 0;
4248         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4249
4250 nla_put_failure:
4251         nlmsg_free(msg);
4252         return ret;
4253
4254 }
4255
4256
4257 static int wpa_driver_nl80211_associate(
4258         void *priv, struct wpa_driver_associate_params *params)
4259 {
4260         struct i802_bss *bss = priv;
4261         struct wpa_driver_nl80211_data *drv = bss->drv;
4262         int ret = -1;
4263         struct nl_msg *msg;
4264
4265         if (params->mode == IEEE80211_MODE_AP)
4266                 return wpa_driver_nl80211_ap(drv, params);
4267
4268         if (params->mode == IEEE80211_MODE_IBSS)
4269                 return wpa_driver_nl80211_ibss(drv, params);
4270
4271         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
4272                 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4273                         return -1;
4274                 return wpa_driver_nl80211_connect(drv, params);
4275         }
4276
4277         drv->associated = 0;
4278
4279         msg = nlmsg_alloc();
4280         if (!msg)
4281                 return -1;
4282
4283         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4284                    drv->ifindex);
4285         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4286                     NL80211_CMD_ASSOCIATE, 0);
4287
4288         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4289         if (params->bssid) {
4290                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4291                            MAC2STR(params->bssid));
4292                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4293         }
4294         if (params->freq) {
4295                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4296                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4297                 drv->assoc_freq = params->freq;
4298         } else
4299                 drv->assoc_freq = 0;
4300         if (params->ssid) {
4301                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4302                                   params->ssid, params->ssid_len);
4303                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4304                         params->ssid);
4305                 if (params->ssid_len > sizeof(drv->ssid))
4306                         goto nla_put_failure;
4307                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4308                 drv->ssid_len = params->ssid_len;
4309         }
4310         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
4311         if (params->wpa_ie)
4312                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4313                         params->wpa_ie);
4314
4315 #ifdef CONFIG_IEEE80211W
4316         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4317                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4318 #endif /* CONFIG_IEEE80211W */
4319
4320         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4321
4322         if (params->prev_bssid) {
4323                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
4324                            MAC2STR(params->prev_bssid));
4325                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4326                         params->prev_bssid);
4327         }
4328
4329         if (params->p2p)
4330                 wpa_printf(MSG_DEBUG, "  * P2P group");
4331
4332         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4333         msg = NULL;
4334         if (ret) {
4335                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4336                            "(%s)", ret, strerror(-ret));
4337                 nl80211_dump_scan(drv);
4338                 goto nla_put_failure;
4339         }
4340         ret = 0;
4341         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4342                    "successfully");
4343
4344 nla_put_failure:
4345         nlmsg_free(msg);
4346         return ret;
4347 }
4348
4349
4350 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4351                             int ifindex, int mode)
4352 {
4353         struct nl_msg *msg;
4354         int ret = -ENOBUFS;
4355
4356         msg = nlmsg_alloc();
4357         if (!msg)
4358                 return -ENOMEM;
4359
4360         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4361                     0, NL80211_CMD_SET_INTERFACE, 0);
4362         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4363         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4364
4365         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4366         if (!ret)
4367                 return 0;
4368 nla_put_failure:
4369         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4370                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
4371         return ret;
4372 }
4373
4374
4375 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4376 {
4377         struct i802_bss *bss = priv;
4378         struct wpa_driver_nl80211_data *drv = bss->drv;
4379         int ret = -1;
4380         int nlmode;
4381         int i;
4382
4383         switch (mode) {
4384         case 0:
4385                 nlmode = NL80211_IFTYPE_STATION;
4386                 break;
4387         case 1:
4388                 nlmode = NL80211_IFTYPE_ADHOC;
4389                 break;
4390         case 2:
4391                 nlmode = NL80211_IFTYPE_AP;
4392                 break;
4393         default:
4394                 return -1;
4395         }
4396
4397         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4398                 drv->nlmode = nlmode;
4399                 ret = 0;
4400                 goto done;
4401         }
4402
4403         if (nlmode == drv->nlmode) {
4404                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4405                            "requested mode - ignore error");
4406                 ret = 0;
4407                 goto done; /* Already in the requested mode */
4408         }
4409
4410         /* mac80211 doesn't allow mode changes while the device is up, so
4411          * take the device down, try to set the mode again, and bring the
4412          * device back up.
4413          */
4414         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4415                    "interface down");
4416         for (i = 0; i < 10; i++) {
4417                 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4418                     0) {
4419                         /* Try to set the mode again while the interface is
4420                          * down */
4421                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4422                         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4423                                                   1))
4424                                 ret = -1;
4425                         if (!ret)
4426                                 break;
4427                 } else
4428                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4429                                    "interface down");
4430                 os_sleep(0, 100000);
4431         }
4432
4433         if (!ret) {
4434                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4435                            "interface is down");
4436                 drv->nlmode = nlmode;
4437         }
4438
4439 done:
4440         if (!ret && nlmode == NL80211_IFTYPE_AP) {
4441                 /* Setup additional AP mode functionality if needed */
4442                 if (drv->monitor_ifidx < 0 &&
4443                     nl80211_create_monitor_interface(drv))
4444                         return -1;
4445         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4446                 /* Remove additional AP mode functionality */
4447                 nl80211_remove_monitor_interface(drv);
4448                 bss->beacon_set = 0;
4449         }
4450
4451         if (ret)
4452                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4453                            "from %d failed", nlmode, drv->nlmode);
4454
4455         return ret;
4456 }
4457
4458
4459 static int wpa_driver_nl80211_get_capa(void *priv,
4460                                        struct wpa_driver_capa *capa)
4461 {
4462         struct i802_bss *bss = priv;
4463         struct wpa_driver_nl80211_data *drv = bss->drv;
4464         if (!drv->has_capability)
4465                 return -1;
4466         os_memcpy(capa, &drv->capa, sizeof(*capa));
4467         return 0;
4468 }
4469
4470
4471 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4472 {
4473         struct i802_bss *bss = priv;
4474         struct wpa_driver_nl80211_data *drv = bss->drv;
4475
4476         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4477                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4478         drv->operstate = state;
4479         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4480                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
4481 }
4482
4483
4484 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4485 {
4486         struct i802_bss *bss = priv;
4487         struct wpa_driver_nl80211_data *drv = bss->drv;
4488         struct nl_msg *msg;
4489         struct nl80211_sta_flag_update upd;
4490
4491         msg = nlmsg_alloc();
4492         if (!msg)
4493                 return -ENOMEM;
4494
4495         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4496                     0, NL80211_CMD_SET_STATION, 0);
4497
4498         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4499                     if_nametoindex(bss->ifname));
4500         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4501
4502         os_memset(&upd, 0, sizeof(upd));
4503         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4504         if (authorized)
4505                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4506         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4507
4508         return send_and_recv_msgs(drv, msg, NULL, NULL);
4509  nla_put_failure:
4510         return -ENOBUFS;
4511 }
4512
4513
4514 #ifdef HOSTAPD
4515
4516 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4517 {
4518         int i;
4519         int *old;
4520
4521         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4522                    ifidx);
4523         for (i = 0; i < drv->num_if_indices; i++) {
4524                 if (drv->if_indices[i] == 0) {
4525                         drv->if_indices[i] = ifidx;
4526                         return;
4527                 }
4528         }
4529
4530         if (drv->if_indices != drv->default_if_indices)
4531                 old = drv->if_indices;
4532         else
4533                 old = NULL;
4534
4535         drv->if_indices = os_realloc(old,
4536                                      sizeof(int) * (drv->num_if_indices + 1));
4537         if (!drv->if_indices) {
4538                 if (!old)
4539                         drv->if_indices = drv->default_if_indices;
4540                 else
4541                         drv->if_indices = old;
4542                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4543                            "interfaces");
4544                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4545                 return;
4546         } else if (!old)
4547                 os_memcpy(drv->if_indices, drv->default_if_indices,
4548                           sizeof(drv->default_if_indices));
4549         drv->if_indices[drv->num_if_indices] = ifidx;
4550         drv->num_if_indices++;
4551 }
4552
4553
4554 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4555 {
4556         int i;
4557
4558         for (i = 0; i < drv->num_if_indices; i++) {
4559                 if (drv->if_indices[i] == ifidx) {
4560                         drv->if_indices[i] = 0;
4561                         break;
4562                 }
4563         }
4564 }
4565
4566
4567 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4568 {
4569         int i;
4570
4571         for (i = 0; i < drv->num_if_indices; i++)
4572                 if (drv->if_indices[i] == ifidx)
4573                         return 1;
4574
4575         return 0;
4576 }
4577
4578
4579 static inline int min_int(int a, int b)
4580 {
4581         if (a < b)
4582                 return a;
4583         return b;
4584 }
4585
4586
4587 static int get_key_handler(struct nl_msg *msg, void *arg)
4588 {
4589         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4590         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4591
4592         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4593                   genlmsg_attrlen(gnlh, 0), NULL);
4594
4595         /*
4596          * TODO: validate the key index and mac address!
4597          * Otherwise, there's a race condition as soon as
4598          * the kernel starts sending key notifications.
4599          */
4600
4601         if (tb[NL80211_ATTR_KEY_SEQ])
4602                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4603                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4604         return NL_SKIP;
4605 }
4606
4607
4608 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4609                            int idx, u8 *seq)
4610 {
4611         struct i802_bss *bss = priv;
4612         struct wpa_driver_nl80211_data *drv = bss->drv;
4613         struct nl_msg *msg;
4614
4615         msg = nlmsg_alloc();
4616         if (!msg)
4617                 return -ENOMEM;
4618
4619         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4620                     0, NL80211_CMD_GET_KEY, 0);
4621
4622         if (addr)
4623                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4624         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4625         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4626
4627         memset(seq, 0, 6);
4628
4629         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4630  nla_put_failure:
4631         return -ENOBUFS;
4632 }
4633
4634
4635 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4636                               int mode)
4637 {
4638         struct i802_bss *bss = priv;
4639         struct wpa_driver_nl80211_data *drv = bss->drv;
4640         struct nl_msg *msg;
4641         u8 rates[NL80211_MAX_SUPP_RATES];
4642         u8 rates_len = 0;
4643         int i;
4644
4645         msg = nlmsg_alloc();
4646         if (!msg)
4647                 return -ENOMEM;
4648
4649         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4650                     NL80211_CMD_SET_BSS, 0);
4651
4652         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4653                 rates[rates_len++] = basic_rates[i] / 5;
4654
4655         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4656
4657         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4658
4659         return send_and_recv_msgs(drv, msg, NULL, NULL);
4660  nla_put_failure:
4661         return -ENOBUFS;
4662 }
4663
4664 #endif /* HOSTAPD */
4665
4666
4667 /* Set kernel driver on given frequency (MHz) */
4668 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4669 {
4670         struct i802_bss *bss = priv;
4671         struct wpa_driver_nl80211_data *drv = bss->drv;
4672         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4673                                            freq->sec_channel_offset);
4674 }
4675
4676
4677 #ifdef HOSTAPD
4678
4679 static int i802_set_rts(void *priv, int rts)
4680 {
4681         struct i802_bss *bss = priv;
4682         struct wpa_driver_nl80211_data *drv = bss->drv;
4683         struct nl_msg *msg;
4684         int ret = -ENOBUFS;
4685         u32 val;
4686
4687         msg = nlmsg_alloc();
4688         if (!msg)
4689                 return -ENOMEM;
4690
4691         if (rts >= 2347)
4692                 val = (u32) -1;
4693         else
4694                 val = rts;
4695
4696         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4697                     0, NL80211_CMD_SET_WIPHY, 0);
4698         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4699         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4700
4701         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4702         if (!ret)
4703                 return 0;
4704 nla_put_failure:
4705         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4706                    "%d (%s)", rts, ret, strerror(-ret));
4707         return ret;
4708 }
4709
4710
4711 static int i802_set_frag(void *priv, int frag)
4712 {
4713         struct i802_bss *bss = priv;
4714         struct wpa_driver_nl80211_data *drv = bss->drv;
4715         struct nl_msg *msg;
4716         int ret = -ENOBUFS;
4717         u32 val;
4718
4719         msg = nlmsg_alloc();
4720         if (!msg)
4721                 return -ENOMEM;
4722
4723         if (frag >= 2346)
4724                 val = (u32) -1;
4725         else
4726                 val = frag;
4727
4728         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4729                     0, NL80211_CMD_SET_WIPHY, 0);
4730         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4731         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4732
4733         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4734         if (!ret)
4735                 return 0;
4736 nla_put_failure:
4737         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4738                    "%d: %d (%s)", frag, ret, strerror(-ret));
4739         return ret;
4740 }
4741
4742
4743 static int i802_flush(void *priv)
4744 {
4745         struct i802_bss *bss = priv;
4746         struct wpa_driver_nl80211_data *drv = bss->drv;
4747         struct nl_msg *msg;
4748
4749         msg = nlmsg_alloc();
4750         if (!msg)
4751                 return -1;
4752
4753         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4754                     0, NL80211_CMD_DEL_STATION, 0);
4755
4756         /*
4757          * XXX: FIX! this needs to flush all VLANs too
4758          */
4759         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4760                     if_nametoindex(bss->ifname));
4761
4762         return send_and_recv_msgs(drv, msg, NULL, NULL);
4763  nla_put_failure:
4764         return -ENOBUFS;
4765 }
4766
4767
4768 static int get_sta_handler(struct nl_msg *msg, void *arg)
4769 {
4770         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4771         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4772         struct hostap_sta_driver_data *data = arg;
4773         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4774         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4775                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4776                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4777                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4778                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4779                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4780         };
4781
4782         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4783                   genlmsg_attrlen(gnlh, 0), NULL);
4784
4785         /*
4786          * TODO: validate the interface and mac address!
4787          * Otherwise, there's a race condition as soon as
4788          * the kernel starts sending station notifications.
4789          */
4790
4791         if (!tb[NL80211_ATTR_STA_INFO]) {
4792                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4793                 return NL_SKIP;
4794         }
4795         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4796                              tb[NL80211_ATTR_STA_INFO],
4797                              stats_policy)) {
4798                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4799                 return NL_SKIP;
4800         }
4801
4802         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4803                 data->inactive_msec =
4804                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4805         if (stats[NL80211_STA_INFO_RX_BYTES])
4806                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4807         if (stats[NL80211_STA_INFO_TX_BYTES])
4808                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4809         if (stats[NL80211_STA_INFO_RX_PACKETS])
4810                 data->rx_packets =
4811                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4812         if (stats[NL80211_STA_INFO_TX_PACKETS])
4813                 data->tx_packets =
4814                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4815
4816         return NL_SKIP;
4817 }
4818
4819 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4820                               const u8 *addr)
4821 {
4822         struct i802_bss *bss = priv;
4823         struct wpa_driver_nl80211_data *drv = bss->drv;
4824         struct nl_msg *msg;
4825
4826         os_memset(data, 0, sizeof(*data));
4827         msg = nlmsg_alloc();
4828         if (!msg)
4829                 return -ENOMEM;
4830
4831         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4832                     0, NL80211_CMD_GET_STATION, 0);
4833
4834         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4835         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4836
4837         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4838  nla_put_failure:
4839         return -ENOBUFS;
4840 }
4841
4842
4843 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4844                                     int cw_min, int cw_max, int burst_time)
4845 {
4846         struct i802_bss *bss = priv;
4847         struct wpa_driver_nl80211_data *drv = bss->drv;
4848         struct nl_msg *msg;
4849         struct nlattr *txq, *params;
4850
4851         msg = nlmsg_alloc();
4852         if (!msg)
4853                 return -1;
4854
4855         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4856                     0, NL80211_CMD_SET_WIPHY, 0);
4857
4858         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4859
4860         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4861         if (!txq)
4862                 goto nla_put_failure;
4863
4864         /* We are only sending parameters for a single TXQ at a time */
4865         params = nla_nest_start(msg, 1);
4866         if (!params)
4867                 goto nla_put_failure;
4868
4869         switch (queue) {
4870         case 0:
4871                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
4872                 break;
4873         case 1:
4874                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
4875                 break;
4876         case 2:
4877                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
4878                 break;
4879         case 3:
4880                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
4881                 break;
4882         }
4883         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4884          * 32 usec, so need to convert the value here. */
4885         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4886         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4887         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4888         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4889
4890         nla_nest_end(msg, params);
4891
4892         nla_nest_end(msg, txq);
4893
4894         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4895                 return 0;
4896  nla_put_failure:
4897         return -1;
4898 }
4899
4900
4901 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4902 {
4903         struct i802_bss *bss = priv;
4904         struct wpa_driver_nl80211_data *drv = bss->drv;
4905         struct nl_msg *msg;
4906
4907         msg = nlmsg_alloc();
4908         if (!msg)
4909                 return -ENOMEM;
4910
4911         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4912                     NL80211_CMD_SET_BSS, 0);
4913
4914         if (cts >= 0)
4915                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4916         if (preamble >= 0)
4917                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4918         if (slot >= 0)
4919                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4920
4921         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4922
4923         return send_and_recv_msgs(drv, msg, NULL, NULL);
4924  nla_put_failure:
4925         return -ENOBUFS;
4926 }
4927
4928
4929 static int i802_set_cts_protect(void *priv, int value)
4930 {
4931         return i802_set_bss(priv, value, -1, -1);
4932 }
4933
4934
4935 static int i802_set_preamble(void *priv, int value)
4936 {
4937         return i802_set_bss(priv, -1, value, -1);
4938 }
4939
4940
4941 static int i802_set_short_slot_time(void *priv, int value)
4942 {
4943         return i802_set_bss(priv, -1, -1, value);
4944 }
4945
4946
4947 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4948                              const char *ifname, int vlan_id)
4949 {
4950         struct i802_bss *bss = priv;
4951         struct wpa_driver_nl80211_data *drv = bss->drv;
4952         struct nl_msg *msg;
4953         int ret = -ENOBUFS;
4954
4955         msg = nlmsg_alloc();
4956         if (!msg)
4957                 return -ENOMEM;
4958
4959         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4960                     0, NL80211_CMD_SET_STATION, 0);
4961
4962         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4963                     if_nametoindex(bss->ifname));
4964         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4965         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4966                     if_nametoindex(ifname));
4967
4968         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4969         if (ret < 0) {
4970                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4971                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4972                            MAC2STR(addr), ifname, vlan_id, ret,
4973                            strerror(-ret));
4974         }
4975  nla_put_failure:
4976         return ret;
4977 }
4978
4979
4980 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4981 {
4982         struct i802_bss *bss = priv;
4983         struct wpa_driver_nl80211_data *drv = bss->drv;
4984         char name[IFNAMSIZ + 1];
4985
4986         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4987         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4988                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4989         if (val) {
4990                 if (!if_nametoindex(name) &&
4991                     nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4992                                          NULL, 1) < 0)
4993                         return -1;
4994                 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4995                 return i802_set_sta_vlan(priv, addr, name, 0);
4996         } else {
4997                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4998                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4999                                                     name);
5000         }
5001 }
5002
5003
5004 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
5005 {
5006         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5007         struct sockaddr_ll lladdr;
5008         unsigned char buf[3000];
5009         int len;
5010         socklen_t fromlen = sizeof(lladdr);
5011
5012         len = recvfrom(sock, buf, sizeof(buf), 0,
5013                        (struct sockaddr *)&lladdr, &fromlen);
5014         if (len < 0) {
5015                 perror("recv");
5016                 return;
5017         }
5018
5019         if (have_ifidx(drv, lladdr.sll_ifindex))
5020                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
5021 }
5022
5023
5024 static int i802_get_inact_sec(void *priv, const u8 *addr)
5025 {
5026         struct hostap_sta_driver_data data;
5027         int ret;
5028
5029         data.inactive_msec = (unsigned long) -1;
5030         ret = i802_read_sta_data(priv, &data, addr);
5031         if (ret || data.inactive_msec == (unsigned long) -1)
5032                 return -1;
5033         return data.inactive_msec / 1000;
5034 }
5035
5036
5037 static int i802_sta_clear_stats(void *priv, const u8 *addr)
5038 {
5039 #if 0
5040         /* TODO */
5041 #endif
5042         return 0;
5043 }
5044
5045
5046 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
5047                            int reason)
5048 {
5049         struct i802_bss *bss = priv;
5050         struct ieee80211_mgmt mgmt;
5051
5052         memset(&mgmt, 0, sizeof(mgmt));
5053         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5054                                           WLAN_FC_STYPE_DEAUTH);
5055         memcpy(mgmt.da, addr, ETH_ALEN);
5056         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5057         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5058         mgmt.u.deauth.reason_code = host_to_le16(reason);
5059         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5060                                             IEEE80211_HDRLEN +
5061                                             sizeof(mgmt.u.deauth));
5062 }
5063
5064
5065 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
5066                              int reason)
5067 {
5068         struct i802_bss *bss = priv;
5069         struct ieee80211_mgmt mgmt;
5070
5071         memset(&mgmt, 0, sizeof(mgmt));
5072         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
5073                                           WLAN_FC_STYPE_DISASSOC);
5074         memcpy(mgmt.da, addr, ETH_ALEN);
5075         memcpy(mgmt.sa, own_addr, ETH_ALEN);
5076         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
5077         mgmt.u.disassoc.reason_code = host_to_le16(reason);
5078         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
5079                                             IEEE80211_HDRLEN +
5080                                             sizeof(mgmt.u.disassoc));
5081 }
5082
5083
5084 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
5085                              const char *brname, const char *ifname)
5086 {
5087         int ifindex;
5088         char in_br[IFNAMSIZ];
5089
5090         os_strlcpy(drv->brname, brname, IFNAMSIZ);
5091         ifindex = if_nametoindex(brname);
5092         if (ifindex == 0) {
5093                 /*
5094                  * Bridge was configured, but the bridge device does
5095                  * not exist. Try to add it now.
5096                  */
5097                 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
5098                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
5099                                    "bridge interface %s: %s",
5100                                    brname, strerror(errno));
5101                         return -1;
5102                 }
5103                 drv->added_bridge = 1;
5104                 add_ifidx(drv, if_nametoindex(brname));
5105         }
5106
5107         if (linux_br_get(in_br, ifname) == 0) {
5108                 if (os_strcmp(in_br, brname) == 0)
5109                         return 0; /* already in the bridge */
5110
5111                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
5112                            "bridge %s", ifname, in_br);
5113                 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
5114                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
5115                                    "remove interface %s from bridge "
5116                                    "%s: %s",
5117                                    ifname, brname, strerror(errno));
5118                         return -1;
5119                 }
5120         }
5121
5122         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
5123                    ifname, brname);
5124         if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
5125                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
5126                            "into bridge %s: %s",
5127                            ifname, brname, strerror(errno));
5128                 return -1;
5129         }
5130         drv->added_if_into_bridge = 1;
5131
5132         return 0;
5133 }
5134
5135
5136 static void *i802_init(struct hostapd_data *hapd,
5137                        struct wpa_init_params *params)
5138 {
5139         struct wpa_driver_nl80211_data *drv;
5140         struct i802_bss *bss;
5141         size_t i;
5142         char brname[IFNAMSIZ];
5143         int ifindex, br_ifindex;
5144         int br_added = 0;
5145
5146         bss = wpa_driver_nl80211_init(hapd, params->ifname);
5147         if (bss == NULL)
5148                 return NULL;
5149
5150         drv = bss->drv;
5151         if (linux_br_get(brname, params->ifname) == 0) {
5152                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
5153                            params->ifname, brname);
5154                 br_ifindex = if_nametoindex(brname);
5155         } else {
5156                 brname[0] = '\0';
5157                 br_ifindex = 0;
5158         }
5159
5160         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
5161         drv->if_indices = drv->default_if_indices;
5162         for (i = 0; i < params->num_bridge; i++) {
5163                 if (params->bridge[i]) {
5164                         ifindex = if_nametoindex(params->bridge[i]);
5165                         if (ifindex)
5166                                 add_ifidx(drv, ifindex);
5167                         if (ifindex == br_ifindex)
5168                                 br_added = 1;
5169                 }
5170         }
5171         if (!br_added && br_ifindex &&
5172             (params->num_bridge == 0 || !params->bridge[0]))
5173                 add_ifidx(drv, br_ifindex);
5174
5175         /* start listening for EAPOL on the default AP interface */
5176         add_ifidx(drv, drv->ifindex);
5177
5178         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
5179                 goto failed;
5180
5181         if (params->bssid) {
5182                 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
5183                                        params->bssid))
5184                         goto failed;
5185         }
5186
5187         if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
5188                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
5189                            "into AP mode", bss->ifname);
5190                 goto failed;
5191         }
5192
5193         if (params->num_bridge && params->bridge[0] &&
5194             i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5195                 goto failed;
5196
5197         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
5198                 goto failed;
5199
5200         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5201         if (drv->eapol_sock < 0) {
5202                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
5203                 goto failed;
5204         }
5205
5206         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5207         {
5208                 printf("Could not register read socket for eapol\n");
5209                 goto failed;
5210         }
5211
5212         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
5213                 goto failed;
5214
5215         return bss;
5216
5217 failed:
5218         nl80211_remove_monitor_interface(drv);
5219         if (drv->ioctl_sock >= 0)
5220                 close(drv->ioctl_sock);
5221
5222         genl_family_put(drv->nl80211);
5223         nl_cache_free(drv->nl_cache);
5224         nl80211_handle_destroy(drv->nl_handle);
5225         nl_cb_put(drv->nl_cb);
5226
5227         os_free(drv);
5228         return NULL;
5229 }
5230
5231
5232 static void i802_deinit(void *priv)
5233 {
5234         wpa_driver_nl80211_deinit(priv);
5235 }
5236
5237 #endif /* HOSTAPD */
5238
5239
5240 static enum nl80211_iftype wpa_driver_nl80211_if_type(
5241         enum wpa_driver_if_type type)
5242 {
5243         switch (type) {
5244         case WPA_IF_STATION:
5245         case WPA_IF_P2P_CLIENT:
5246         case WPA_IF_P2P_GROUP:
5247                 return NL80211_IFTYPE_STATION;
5248         case WPA_IF_AP_VLAN:
5249                 return NL80211_IFTYPE_AP_VLAN;
5250         case WPA_IF_AP_BSS:
5251         case WPA_IF_P2P_GO:
5252                 return NL80211_IFTYPE_AP;
5253         }
5254         return -1;
5255 }
5256
5257
5258 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
5259                                      const char *ifname, const u8 *addr,
5260                                      void *bss_ctx, void **drv_priv,
5261                                      char *force_ifname, u8 *if_addr)
5262 {
5263         struct i802_bss *bss = priv;
5264         struct wpa_driver_nl80211_data *drv = bss->drv;
5265         int ifidx;
5266 #ifdef HOSTAPD
5267         struct i802_bss *new_bss = NULL;
5268
5269         if (type == WPA_IF_AP_BSS) {
5270                 new_bss = os_zalloc(sizeof(*new_bss));
5271                 if (new_bss == NULL)
5272                         return -1;
5273         }
5274 #endif /* HOSTAPD */
5275
5276         if (addr)
5277                 os_memcpy(if_addr, addr, ETH_ALEN);
5278         ifidx = nl80211_create_iface(drv, ifname,
5279                                      wpa_driver_nl80211_if_type(type), addr,
5280                                      0);
5281         if (ifidx < 0) {
5282 #ifdef HOSTAPD
5283                 os_free(new_bss);
5284 #endif /* HOSTAPD */
5285                 return -1;
5286         }
5287
5288         if (!addr &&
5289             linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5290                 return -1;
5291
5292 #ifdef HOSTAPD
5293         if (type == WPA_IF_AP_BSS) {
5294                 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5295                         nl80211_remove_iface(drv, ifidx);
5296                         os_free(new_bss);
5297                         return -1;
5298                 }
5299                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5300                 new_bss->ifindex = ifidx;
5301                 new_bss->drv = drv;
5302                 new_bss->next = drv->first_bss.next;
5303                 drv->first_bss.next = new_bss;
5304                 if (drv_priv)
5305                         *drv_priv = new_bss;
5306         }
5307 #endif /* HOSTAPD */
5308
5309         return 0;
5310 }
5311
5312
5313 static int wpa_driver_nl80211_if_remove(void *priv,
5314                                         enum wpa_driver_if_type type,
5315                                         const char *ifname)
5316 {
5317         struct i802_bss *bss = priv;
5318         struct wpa_driver_nl80211_data *drv = bss->drv;
5319         int ifindex = if_nametoindex(ifname);
5320
5321         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5322                    __func__, type, ifname, ifindex);
5323         if (ifindex <= 0)
5324                 return -1;
5325         nl80211_remove_iface(drv, ifindex);
5326
5327 #ifdef HOSTAPD
5328         if (type != WPA_IF_AP_BSS)
5329                 return 0;
5330
5331         if (bss != &drv->first_bss) {
5332                 struct i802_bss *tbss = &drv->first_bss;
5333
5334                 while (tbss) {
5335                         if (tbss->next != bss)
5336                                 continue;
5337
5338                         tbss->next = bss->next;
5339                         os_free(bss);
5340                         break;
5341                 }
5342         }
5343 #endif /* HOSTAPD */
5344
5345         return 0;
5346 }
5347
5348
5349 static int cookie_handler(struct nl_msg *msg, void *arg)
5350 {
5351         struct nlattr *tb[NL80211_ATTR_MAX + 1];
5352         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5353         u64 *cookie = arg;
5354         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5355                   genlmsg_attrlen(gnlh, 0), NULL);
5356         if (tb[NL80211_ATTR_COOKIE])
5357                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5358         return NL_SKIP;
5359 }
5360
5361
5362 static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5363                                   unsigned int freq, const u8 *buf,
5364                                   size_t buf_len, u64 *cookie_out)
5365 {
5366         struct nl_msg *msg;
5367         u64 cookie;
5368         int ret = -1;
5369
5370         msg = nlmsg_alloc();
5371         if (!msg)
5372                 return -1;
5373
5374         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5375                     NL80211_CMD_FRAME, 0);
5376
5377         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5378         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5379         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5380
5381         cookie = 0;
5382         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5383         msg = NULL;
5384         if (ret) {
5385                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5386                            "(%s)", ret, strerror(-ret));
5387                 goto nla_put_failure;
5388         }
5389         wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5390                    "cookie 0x%llx", (long long unsigned int) cookie);
5391
5392         if (cookie_out)
5393                 *cookie_out = cookie;
5394
5395 nla_put_failure:
5396         nlmsg_free(msg);
5397         return ret;
5398 }
5399
5400
5401 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5402                                           const u8 *dst, const u8 *src,
5403                                           const u8 *bssid,
5404                                           const u8 *data, size_t data_len)
5405 {
5406         struct i802_bss *bss = priv;
5407         struct wpa_driver_nl80211_data *drv = bss->drv;
5408         int ret = -1;
5409         u8 *buf;
5410         struct ieee80211_hdr *hdr;
5411
5412         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5413                    drv->ifindex);
5414
5415         buf = os_zalloc(24 + data_len);
5416         if (buf == NULL)
5417                 return ret;
5418         os_memcpy(buf + 24, data, data_len);
5419         hdr = (struct ieee80211_hdr *) buf;
5420         hdr->frame_control =
5421                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5422         os_memcpy(hdr->addr1, dst, ETH_ALEN);
5423         os_memcpy(hdr->addr2, src, ETH_ALEN);
5424         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5425
5426         if (drv->nlmode == NL80211_IFTYPE_AP)
5427                 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5428         else
5429                 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5430                                              &drv->send_action_cookie);
5431
5432         os_free(buf);
5433         return ret;
5434 }
5435
5436
5437 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5438                                                 unsigned int duration)
5439 {
5440         struct i802_bss *bss = priv;
5441         struct wpa_driver_nl80211_data *drv = bss->drv;
5442         struct nl_msg *msg;
5443         int ret;
5444         u64 cookie;
5445
5446         msg = nlmsg_alloc();
5447         if (!msg)
5448                 return -1;
5449
5450         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5451                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5452
5453         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5454         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5455         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5456
5457         cookie = 0;
5458         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5459         if (ret == 0) {
5460                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5461                            "0x%llx for freq=%u MHz duration=%u",
5462                            (long long unsigned int) cookie, freq, duration);
5463                 drv->remain_on_chan_cookie = cookie;
5464                 return 0;
5465         }
5466         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5467                    "(freq=%d duration=%u): %d (%s)",
5468                    freq, duration, ret, strerror(-ret));
5469 nla_put_failure:
5470         return -1;
5471 }
5472
5473
5474 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5475 {
5476         struct i802_bss *bss = priv;
5477         struct wpa_driver_nl80211_data *drv = bss->drv;
5478         struct nl_msg *msg;
5479         int ret;
5480
5481         if (!drv->pending_remain_on_chan) {
5482                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5483                            "to cancel");
5484                 return -1;
5485         }
5486
5487         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5488                    "0x%llx",
5489                    (long long unsigned int) drv->remain_on_chan_cookie);
5490
5491         msg = nlmsg_alloc();
5492         if (!msg)
5493                 return -1;
5494
5495         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5496                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5497
5498         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5499         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5500
5501         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5502         if (ret == 0)
5503                 return 0;
5504         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5505                    "%d (%s)", ret, strerror(-ret));
5506 nla_put_failure:
5507         return -1;
5508 }
5509
5510
5511 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5512 {
5513         struct i802_bss *bss = priv;
5514         struct wpa_driver_nl80211_data *drv = bss->drv;
5515
5516         if (drv->nlmode != NL80211_IFTYPE_STATION) {
5517                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5518                            "allowed in station mode (iftype=%d)",
5519                            drv->nlmode);
5520                 return -1;
5521         }
5522
5523         if (!report) {
5524                 if (drv->nl_handle_preq) {
5525                         eloop_unregister_read_sock(
5526                                 nl_socket_get_fd(drv->nl_handle_preq));
5527                         nl_cache_free(drv->nl_cache_preq);
5528                         nl80211_handle_destroy(drv->nl_handle_preq);
5529                         drv->nl_handle_preq = NULL;
5530                 }
5531                 return 0;
5532         }
5533
5534         if (drv->nl_handle_preq) {
5535                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
5536                            "already on!");
5537                 return 0;
5538         }
5539
5540         drv->nl_handle_preq = nl80211_handle_alloc(drv->nl_cb);
5541         if (drv->nl_handle_preq == NULL) {
5542                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate "
5543                            "netlink callbacks (preq)");
5544                 goto out_err1;
5545         }
5546
5547         if (genl_connect(drv->nl_handle_preq)) {
5548                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to "
5549                            "generic netlink (preq)");
5550                 goto out_err2;
5551                 return -1;
5552         }
5553
5554 #ifdef CONFIG_LIBNL20
5555         if (genl_ctrl_alloc_cache(drv->nl_handle_preq,
5556                                   &drv->nl_cache_preq) < 0) {
5557                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5558                            "netlink cache (preq)");
5559                 goto out_err2;
5560         }
5561 #else /* CONFIG_LIBNL20 */
5562         drv->nl_cache_preq = genl_ctrl_alloc_cache(drv->nl_handle_preq);
5563         if (drv->nl_cache_preq == NULL) {
5564                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
5565                            "netlink cache (preq)");
5566                 goto out_err2;
5567         }
5568 #endif /* CONFIG_LIBNL20 */
5569
5570         if (nl80211_register_frame(drv, drv->nl_handle_preq,
5571                                    (WLAN_FC_TYPE_MGMT << 2) |
5572                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
5573                                    NULL, 0) < 0) {
5574                 goto out_err3;
5575         }
5576
5577         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_preq),
5578                                  wpa_driver_nl80211_event_receive, drv,
5579                                  drv->nl_handle_preq);
5580
5581         return 0;
5582
5583  out_err3:
5584         nl_cache_free(drv->nl_cache_preq);
5585  out_err2:
5586         nl80211_handle_destroy(drv->nl_handle_preq);
5587         drv->nl_handle_preq = NULL;
5588  out_err1:
5589         return -1;
5590 }
5591
5592
5593 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5594                                      int ifindex, int disabled)
5595 {
5596         struct nl_msg *msg;
5597         struct nlattr *bands, *band;
5598         int ret;
5599
5600         msg = nlmsg_alloc();
5601         if (!msg)
5602                 return -1;
5603
5604         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5605                     NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5606         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5607
5608         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5609         if (!bands)
5610                 goto nla_put_failure;
5611
5612         /*
5613          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5614          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5615          * rates. All 5 GHz rates are left enabled.
5616          */
5617         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5618         if (!band)
5619                 goto nla_put_failure;
5620         NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5621                 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5622         nla_nest_end(msg, band);
5623
5624         nla_nest_end(msg, bands);
5625
5626         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5627         msg = NULL;
5628         if (ret) {
5629                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5630                            "(%s)", ret, strerror(-ret));
5631         }
5632
5633         return ret;
5634
5635 nla_put_failure:
5636         nlmsg_free(msg);
5637         return -1;
5638 }
5639
5640
5641 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5642 {
5643         struct i802_bss *bss = priv;
5644         struct wpa_driver_nl80211_data *drv = bss->drv;
5645         drv->disable_11b_rates = disabled;
5646         return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5647 }
5648
5649
5650 static int wpa_driver_nl80211_deinit_ap(void *priv)
5651 {
5652         struct i802_bss *bss = priv;
5653         struct wpa_driver_nl80211_data *drv = bss->drv;
5654         if (drv->nlmode != NL80211_IFTYPE_AP)
5655                 return -1;
5656         wpa_driver_nl80211_del_beacon(drv);
5657         return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5658 }
5659
5660
5661 static void wpa_driver_nl80211_resume(void *priv)
5662 {
5663         struct i802_bss *bss = priv;
5664         struct wpa_driver_nl80211_data *drv = bss->drv;
5665         if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5666                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5667                            "resume event");
5668         }
5669 }
5670
5671
5672 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5673                                   const u8 *ies, size_t ies_len)
5674 {
5675         struct i802_bss *bss = priv;
5676         struct wpa_driver_nl80211_data *drv = bss->drv;
5677         int ret;
5678         u8 *data, *pos;
5679         size_t data_len;
5680         u8 own_addr[ETH_ALEN];
5681
5682         if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5683                 return -1;
5684
5685         if (action != 1) {
5686                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5687                            "action %d", action);
5688                 return -1;
5689         }
5690
5691         /*
5692          * Action frame payload:
5693          * Category[1] = 6 (Fast BSS Transition)
5694          * Action[1] = 1 (Fast BSS Transition Request)
5695          * STA Address
5696          * Target AP Address
5697          * FT IEs
5698          */
5699
5700         data_len = 2 + 2 * ETH_ALEN + ies_len;
5701         data = os_malloc(data_len);
5702         if (data == NULL)
5703                 return -1;
5704         pos = data;
5705         *pos++ = 0x06; /* FT Action category */
5706         *pos++ = action;
5707         os_memcpy(pos, own_addr, ETH_ALEN);
5708         pos += ETH_ALEN;
5709         os_memcpy(pos, target_ap, ETH_ALEN);
5710         pos += ETH_ALEN;
5711         os_memcpy(pos, ies, ies_len);
5712
5713         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5714                                              own_addr, drv->bssid,
5715                                              data, data_len);
5716         os_free(data);
5717
5718         return ret;
5719 }
5720
5721
5722 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5723 {
5724         struct i802_bss *bss = priv;
5725         struct wpa_driver_nl80211_data *drv = bss->drv;
5726         struct nl_msg *msg, *cqm = NULL;
5727
5728         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5729                    "hysteresis=%d", threshold, hysteresis);
5730
5731         msg = nlmsg_alloc();
5732         if (!msg)
5733                 return -1;
5734
5735         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5736                     0, NL80211_CMD_SET_CQM, 0);
5737
5738         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5739
5740         cqm = nlmsg_alloc();
5741         if (cqm == NULL)
5742                 return -1;
5743
5744         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5745         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5746         nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5747
5748         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5749                 return 0;
5750         msg = NULL;
5751
5752 nla_put_failure:
5753         if (cqm)
5754                 nlmsg_free(cqm);
5755         nlmsg_free(msg);
5756         return -1;
5757 }
5758
5759
5760 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5761                               int encrypt)
5762 {
5763         struct i802_bss *bss = priv;
5764         struct wpa_driver_nl80211_data *drv = bss->drv;
5765         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5766 }
5767
5768
5769 static int nl80211_set_intra_bss(void *priv, int enabled)
5770 {
5771         struct i802_bss *bss = priv;
5772         struct wpa_driver_nl80211_data *drv = bss->drv;
5773         struct nl_msg *msg;
5774
5775         msg = nlmsg_alloc();
5776         if (!msg)
5777                 return -ENOMEM;
5778
5779         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5780                     NL80211_CMD_SET_BSS, 0);
5781
5782         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5783         NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5784
5785         return send_and_recv_msgs(drv, msg, NULL, NULL);
5786  nla_put_failure:
5787         return -ENOBUFS;
5788 }
5789
5790
5791 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5792         .name = "nl80211",
5793         .desc = "Linux nl80211/cfg80211",
5794         .get_bssid = wpa_driver_nl80211_get_bssid,
5795         .get_ssid = wpa_driver_nl80211_get_ssid,
5796         .set_key = wpa_driver_nl80211_set_key,
5797         .scan2 = wpa_driver_nl80211_scan,
5798         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5799         .deauthenticate = wpa_driver_nl80211_deauthenticate,
5800         .disassociate = wpa_driver_nl80211_disassociate,
5801         .authenticate = wpa_driver_nl80211_authenticate,
5802         .associate = wpa_driver_nl80211_associate,
5803         .init = wpa_driver_nl80211_init,
5804         .deinit = wpa_driver_nl80211_deinit,
5805         .get_capa = wpa_driver_nl80211_get_capa,
5806         .set_operstate = wpa_driver_nl80211_set_operstate,
5807         .set_supp_port = wpa_driver_nl80211_set_supp_port,
5808         .set_country = wpa_driver_nl80211_set_country,
5809         .set_beacon = wpa_driver_nl80211_set_beacon,
5810         .if_add = wpa_driver_nl80211_if_add,
5811         .if_remove = wpa_driver_nl80211_if_remove,
5812         .send_mlme = wpa_driver_nl80211_send_mlme,
5813         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5814         .sta_add = wpa_driver_nl80211_sta_add,
5815         .sta_remove = wpa_driver_nl80211_sta_remove,
5816         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5817         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5818 #ifdef HOSTAPD
5819         .hapd_init = i802_init,
5820         .hapd_deinit = i802_deinit,
5821         .get_seqnum = i802_get_seqnum,
5822         .flush = i802_flush,
5823         .read_sta_data = i802_read_sta_data,
5824         .sta_deauth = i802_sta_deauth,
5825         .sta_disassoc = i802_sta_disassoc,
5826         .get_inact_sec = i802_get_inact_sec,
5827         .sta_clear_stats = i802_sta_clear_stats,
5828         .set_rts = i802_set_rts,
5829         .set_frag = i802_set_frag,
5830         .set_rate_sets = i802_set_rate_sets,
5831         .set_cts_protect = i802_set_cts_protect,
5832         .set_preamble = i802_set_preamble,
5833         .set_short_slot_time = i802_set_short_slot_time,
5834         .set_tx_queue_params = i802_set_tx_queue_params,
5835         .set_sta_vlan = i802_set_sta_vlan,
5836         .set_wds_sta = i802_set_wds_sta,
5837 #endif /* HOSTAPD */
5838         .set_freq = i802_set_freq,
5839         .send_action = wpa_driver_nl80211_send_action,
5840         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5841         .cancel_remain_on_channel =
5842         wpa_driver_nl80211_cancel_remain_on_channel,
5843         .probe_req_report = wpa_driver_nl80211_probe_req_report,
5844         .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5845         .deinit_ap = wpa_driver_nl80211_deinit_ap,
5846         .resume = wpa_driver_nl80211_resume,
5847         .send_ft_action = nl80211_send_ft_action,
5848         .signal_monitor = nl80211_signal_monitor,
5849         .send_frame = nl80211_send_frame,
5850         .set_intra_bss = nl80211_set_intra_bss,
5851 };